fix: build without KConfig is possible once more

fix: build without kwallet

.gitea/workflows/release.yml

@@ -0,0 +1,45 @@
+name: Squawk Release workflow
+run-name: ${{ gitea.actor }} is running Squawk Release workflow on release ${{ gitea.event.release.tag_name }}
+on:
+  release:
+    types: [published]
+
+jobs:
+  Archlinux:
+    runs-on: archlinux
+    steps:
+      - name: Download the release tarball
+        run: curl -sL ${{ gitea.server_url }}/${{ gitea.repository }}/archive/${{ gitea.event.release.tag_name }}.tar.gz --output tarball.tar.gz
+
+      - name: Calculate SHA256 for the tarball
+        run: echo "tbSum=$(sha256sum tarball.tar.gz | cut -d ' ' -f 1)" >> $GITHUB_ENV
+
+      - name: Unarchive tarball
+        run: tar -xvzf tarball.tar.gz
+
+      - name: Clone the AUR repository
+        run: |
+          echo "${{ secrets.DEPLOY_TO_AUR_PRIVATE_KEY }}" > key
+          chmod 600 key
+          GIT_SSH_COMMAND="ssh -i key -o 'IdentitiesOnly yes' -o 'StrictHostKeyChecking no'" git clone ssh://aur@aur.archlinux.org/squawk.git aur
+          chmod 777 -R aur
+          cd aur
+          git config user.name ${{ secrets.DEPLOY_TO_AUR_USER_NAME }}
+          git config user.email ${{ secrets.DEPLOY_TO_AUR_EMAIL }}
+
+
+      - name: Copy PKGBUILD to the directory
+        run: cp squawk/packaging/Archlinux/PKGBUILD aur/
+
+      - name: Put SHA256 sum to PKGBUILD file, and generate .SRCINFO
+        working-directory: aur
+        run: |
+          sed -i "/sha256sums=/c\sha256sums=('${{ env.tbSum }}')" PKGBUILD
+          sudo -u build makepkg --printsrcinfo > .SRCINFO
+
+      - name: Commit package to aur
+        working-directory: aur
+        run: |
+          git add PKGBUILD .SRCINFO
+          git commit -m "${{ gitea.event.release.body//\"/\\\" }}"
+          GIT_SSH_COMMAND="ssh -i ../key -o 'IdentitiesOnly yes' -o 'StrictHostKeyChecking no'" git push

.gitmodules

@@ -1,3 +1,9 @@
 [submodule "external/qxmpp"]
 	path = external/qxmpp
 	url = https://github.com/qxmpp-project/qxmpp.git
+[submodule "external/storage"]
+	path = external/storage
+	url = https://git.macaw.me/blue/storage
+[submodule "external/lmdbal"]
+	path = external/lmdbal
+	url = gitea@git.macaw.me:blue/lmdbal.git

CHANGELOG.md

@@ -1,19 +1,89 @@
 # Changelog
 
-## Squawk 0.2.0 (Unreleased)
+## Squawk 0.2.3 (February 04, 2024)
+### Bug fixes
+- "Add contact" and "Join conference" menu are enabled once again (pavavno)!
+- availability is now read from the same section of config file it was stored
+- automatic avatars (if a contact doesn't have one) get generated once again
+
+### Improvements
+- deactivated accounts now don't appear in combobox of "Add contact" and "Join conference" dialogues
+- all of the expandable roster items now get saved between launches
+- settings file on the disk is not rewritten every roster element expansion or collapse
+- removed unnecessary own vcard request at sturtup (used to do it to discover my own avatar)
+- vcard window now is Info system and it can display more information
+- reduced vcard request spam in MUCs
+
+### New features
+- now you can enable tray icon from settings!
+- there is a job queue now, this allowes to spread a bit the spam on the server at connection time
+- squawk now queries clients of it's peers, you can see what programs other people use
+
+## Squawk 0.2.2 (May 05, 2022)
+### Bug fixes
+- now when you remove an account it actually gets removed
+- segfault on uninitialized Availability in some rare occasions
+- fixed crash when you open a dialog with someone that has only error messages in archive
+- message height is now calculated correctly on Chinese and Japanese paragraphs
+- the app doesn't crash on SIGINT anymore
+
+### Improvements
+- there is a way to disable an account and it wouldn't connect when you change availability
+- if you cancel password query an account becomes inactive and doesn't annoy you anymore
+- if you filled password field and chose KWallet as a storage Squawk wouldn't ask you again for the same password
+- if left the password field empty and chose KWallet as a storage Squawk will try to get that password from KWallet before asking you to input it
+- accounts now connect to the server asynchronously - if one is stopped on password prompt another is connecting
+- actualized translations, added English localization file
+
+### New features
+- new "About" window with links, license, gratitudes
+- if the authentication failed Squawk will ask again for your password and login
+- now there is an amount of unread messages showing on top of Squawk launcher icon
+- notifications now have buttons to open a conversation or to mark that message as read
+
+## Squawk 0.2.1 (Apr 02, 2022)
+### Bug fixes
+- build in release mode now no longer spams warnings
+- build now correctly installs all build plugin libs
+- a bug where the correction message was received, the indication was on but the text didn't actually change
+- message body now doesn't intecept context menu from the whole message
+- message input now doesn't increase font when you remove everything from it
+
+### Improvements
+- reduced amount of places where platform specific path separator is used
+- now message input is automatically focused when you open a dialog or a room
+- what() method on unhandled exception now actually tells what happened
+
+### New features
+- the settings are here! You con config different stuff from there
+- now it's possible to set up different qt styles from settings
+- if you have KConfig nad KConfigWidgets packages installed - you can choose from global color schemes
+- it's possible now to choose a folder where squawk is going to store downloaded files
+- now you can correct your message
+
+## Squawk 0.2.0 (Jan 10, 2022)
 ### Bug fixes
 - carbon copies switches on again after reconnection
 - requesting the history of the current chat after reconnection
 - global availability (in drop down list) gets restored after reconnection
 - status icon in active chat changes when presence of the pen pal changes
 - infinite progress when open the dialogue with something that has no history to show
+- fallback icons for buttons, when no supported theme is installed (shunf4)
+- better handling messages with no id (shunf4)
+- removed dependency: uuid, now it's on Qt (shunf4)
+- better requesting latest history (shunf4)
 
 ### Improvements
 - slightly reduced the traffic on the startup by not requesting history of all MUCs
-- completely rewritten message feed, now it works way faster
+- completely rewritten message feed, now it works way faster and looks cooler
 - OPTIONAL RUNTIME dependency: "KIO Widgets" that is supposed to allow you to open a file in your default file manager
 - show in folder now is supposed to try it's best to show file in folder, even you don't have KIO installed
 - once uploaded local files don't get second time uploaded - the remote URL is reused
+- way better compilation time (vae)
+
+### New features
+- pasting images from clipboard to attachment (shunf4)
+- possible compilation for windows and macOS (shunf4)
 
 ## Squawk 0.1.5 (Jul 29, 2020)
 ### Bug fixes

CMakeLists.txt

@@ -1,10 +1,13 @@
-cmake_minimum_required(VERSION 3.4)
-project(squawk VERSION 0.1.6 LANGUAGES CXX)
+cmake_minimum_required(VERSION 3.16)
+project(squawk VERSION 0.2.3 LANGUAGES CXX)
 
 cmake_policy(SET CMP0076 NEW)
+cmake_policy(SET CMP0077 NEW)
 cmake_policy(SET CMP0079 NEW)
+cmake_policy(SET CMP0167 NEW)
 set(CMAKE_CXX_STANDARD 17)
 
+set(QT_VERSION_MAJOR 5)
 set(CMAKE_AUTOMOC ON)
 set(CMAKE_AUTOUIC ON)
 set(CMAKE_AUTORCC ON)
@@ -27,40 +30,41 @@ add_executable(squawk ${WIN32_FLAG} ${MACOSX_BUNDLE_FLAG})
 target_include_directories(squawk PRIVATE ${CMAKE_SOURCE_DIR})
 
 option(SYSTEM_QXMPP "Use system qxmpp lib" ON)
+option(SYSTEM_LMDBAL "Use system lmdbal lib" ON)
 option(WITH_KWALLET "Build KWallet support module" ON)
 option(WITH_KIO "Build KIO support module" ON)
+option(WITH_KCONFIG "Build KConfig support module" ON)
+option(WITH_OMEMO "Build OMEMO support module" OFF)   #it should be off by default untill I sort the problems out
+option(WITH_SIMPLE_CRYPT "Builds with SimpleCrypt to obfuscate password" ON)
 
 # Dependencies
 ## Qt
-find_package(Qt5 COMPONENTS Widgets DBus Gui Xml Network Core REQUIRED)
+if (NOT DEFINED QT_VERSION_MAJOR)
+  find_package(QT NAMES Qt6 Qt5 CONFIG REQUIRED COMPONENTS Widgets DBus Gui Xml Network Core)
+else ()
+  find_package(Qt${QT_VERSION_MAJOR} CONFIG REQUIRED COMPONENTS Widgets DBus Gui Xml Network Core)
+endif()
+
 find_package(Boost COMPONENTS)
 
 target_include_directories(squawk PRIVATE ${Boost_INCLUDE_DIRS})
-target_include_directories(squawk PRIVATE ${Qt5_INCLUDE_DIRS})
-target_include_directories(squawk PRIVATE ${Qt5Widgets_INCLUDE_DIRS})
-target_include_directories(squawk PRIVATE ${Qt5DBus_INCLUDE_DIRS})
-target_include_directories(squawk PRIVATE ${Qt5Gui_INCLUDE_DIRS})
-target_include_directories(squawk PRIVATE ${Qt5Xml_INCLUDE_DIRS})
-target_include_directories(squawk PRIVATE ${Qt5Network_INCLUDE_DIRS})
-target_include_directories(squawk PRIVATE ${Qt5Core_INCLUDE_DIRS})
 
-## QXmpp
-if (SYSTEM_QXMPP)
-  find_package(QXmpp CONFIG)
-
-  if (NOT QXmpp_FOUND)
-    set(SYSTEM_QXMPP OFF)
-    message("QXmpp package wasn't found, trying to build with bundled QXmpp")
+## OMEMO
+if (WITH_OMEMO)
+  find_package(PkgConfig)
+  if (PKG_CONFIG_FOUND)
+    pkg_check_modules(OMEMO libomemo-c)
+    if (OMEMO_FOUND)
+      target_compile_definitions(squawk PRIVATE WITH_OMEMO)
+      message("Building with support of OMEMO")
     else ()
-    message("Building with system QXmpp")
+      message("libomemo-c package wasn't found, trying to build without OMEMO support")
+      set(WITH_OMEMO OFF)
     endif ()
-endif ()
-
-if (NOT SYSTEM_QXMPP)
-  target_link_libraries(squawk PRIVATE qxmpp)
-  add_subdirectory(external/qxmpp)
   else ()
-  target_link_libraries(squawk PRIVATE QXmpp::QXmpp)
+    message("PKG_CONFIG module wasn't found, can not check libomemo-c support, trying to build without OMEMO support")
+    set(WITH_OMEMO OFF)
+  endif ()
 endif ()
 
 ## KIO
@@ -89,24 +93,110 @@ if (WITH_KWALLET)
   endif ()
 endif ()
 
-## Signal (TODO)
-# find_package(Signal REQUIRED)
+## KConfig
+if (WITH_KCONFIG)
+  find_package(KF5Config CONFIG)
+  if (NOT KF5Config_FOUND)
+    set(WITH_KCONFIG OFF)
+    message("KConfig package wasn't found, KConfig support modules wouldn't be built")
+  else()
+    find_package(KF5ConfigWidgets CONFIG)
+    if (NOT KF5ConfigWidgets_FOUND)
+      set(WITH_KCONFIG OFF)
+      message("KConfigWidgets package wasn't found, KConfigWidgets support modules wouldn't be built")
+    else()
+      target_compile_definitions(squawk PRIVATE WITH_KCONFIG)
+      message("Building with support of KConfig")
+      message("Building with support of KConfigWidgets")
+    endif()
+  endif()
+endif()
 
-## LMDB
-find_package(LMDB REQUIRED)
+## QXmpp
+if (SYSTEM_QXMPP)
+  if (WITH_OMEMO)
+    find_package(QXmpp CONFIG COMPONENTS Omemo)
+  else ()
+    find_package(QXmpp CONFIG)
+  endif ()
 
-# Linking
-target_link_libraries(squawk PRIVATE Qt5::Core Qt5::Widgets Qt5::DBus Qt5::Network Qt5::Gui Qt5::Xml)
-target_link_libraries(squawk PRIVATE lmdb)
+  if (NOT QXmpp_FOUND)
+    set(SYSTEM_QXMPP OFF)
+    message("QXmpp package wasn't found, trying to build with bundled QXmpp")
+  else ()
+    message("Building with system QXmpp")
+  endif ()
+endif ()                #it's endif() + if() and not else() because I want it to have a fallback behaviour
+if (NOT SYSTEM_QXMPP)   #we can fail finding system QXmpp and this way we'll check bundled before failing completely
+  message("Building with bundled QXmpp")
+
+  target_include_directories(squawk PRIVATE ${CMAKE_SOURCE_DIR}/external/qxmpp/src/base)
+  target_include_directories(squawk PRIVATE ${CMAKE_SOURCE_DIR}/external/qxmpp/src/client)
+  target_include_directories(squawk PRIVATE ${CMAKE_CURRENT_BINARY_DIR}/external/qxmpp/src)
+
+  if (WITH_OMEMO)
+    target_include_directories(squawk PRIVATE ${CMAKE_SOURCE_DIR}/external/qxmpp/src/omemo)
+    target_include_directories(squawk PRIVATE ${CMAKE_CURRENT_BINARY_DIR}/external/qxmpp/src/omemo)
+    set(BUILD_OMEMO ON)
+    set(BUILD_TESTS OFF)
+  else ()
+    set(BUILD_OMEMO OFF)
+  endif ()
+  add_subdirectory(external/qxmpp)
+  add_library(QXmpp::QXmpp ALIAS QXmppQt${QT_VERSION_MAJOR})
+  if (WITH_OMEMO)
+    target_include_directories(QXmppOmemoQt${QT_VERSION_MAJOR} PRIVATE ${CMAKE_CURRENT_BINARY_DIR}/external/qxmpp/src)
+    add_library(QXmpp::Omemo ALIAS QXmppOmemoQt${QT_VERSION_MAJOR})
+  endif ()
+endif ()
+
+## LMDBAL
+if (SYSTEM_LMDBAL)
+  find_package(lmdbal)
+  if (NOT lmdbal_FOUND)
+    set(SYSTEM_LMDBAL OFF)
+    message("LMDBAL package wasn't found, trying to build with bundled LMDBAL")
+  else ()
+    message("Building with system LMDBAL")
+  endif ()
+else()
+  message("Building with bundled LMDBAL")
+  set(BUILD_STATIC ON)
+  add_subdirectory(external/lmdbal)
+  add_library(LMDBAL::LMDBAL ALIAS LMDBAL)
+endif()
+
+## Linking
+target_link_libraries(squawk
+  PRIVATE
+  Qt${QT_VERSION_MAJOR}::Core
+  Qt${QT_VERSION_MAJOR}::Widgets
+  Qt${QT_VERSION_MAJOR}::DBus
+  Qt${QT_VERSION_MAJOR}::Network
+  Qt${QT_VERSION_MAJOR}::Gui
+  Qt${QT_VERSION_MAJOR}::Xml
+  LMDBAL::LMDBAL
+  QXmpp::QXmpp
+)
+
+if (WITH_OMEMO)
+  target_link_libraries(squawk PRIVATE QXmpp::Omemo)
+endif ()
+
+if (WITH_SIMPLE_CRYPT)
+  target_compile_definitions(squawk PRIVATE WITH_SIMPLE_CRYPT)
+  add_subdirectory(external/simpleCrypt)
   target_link_libraries(squawk PRIVATE simpleCrypt)
-# Link thread libraries on Linux
+endif ()
+
+## Link thread libraries on Linux
 if(UNIX AND NOT APPLE)
   set(THREADS_PREFER_PTHREAD_FLAG ON)
   find_package(Threads REQUIRED)
   target_link_libraries(squawk PRIVATE Threads::Threads)
 endif()
 
-# Build type
+## Build type
 if (NOT CMAKE_BUILD_TYPE)
   set(CMAKE_BUILD_TYPE Debug)
 endif ()
@@ -114,16 +204,27 @@ endif ()
 message("Build type: ${CMAKE_BUILD_TYPE}")
 
 if(CMAKE_COMPILER_IS_GNUCXX)
-target_compile_options(squawk PRIVATE
-  "-Wall;-Wextra"
-  "$<$<CONFIG:DEBUG>:-g>"
-  "$<$<CONFIG:RELEASE>:-O3>"
-  "-fno-sized-deallocation" # for eliminating _ZdlPvm
-  )
+  set (COMPILE_OPTIONS -fno-sized-deallocation)   # for eliminating _ZdlPvm
+  if (CMAKE_BUILD_TYPE STREQUAL "Release")
+    list(APPEND COMPILE_OPTIONS -O3)
+  endif()
+  if (CMAKE_BUILD_TYPE STREQUAL Debug)
+    list(APPEND COMPILE_OPTIONS -g)
+    list(APPEND COMPILE_OPTIONS -Wall)
+    list(APPEND COMPILE_OPTIONS -Wextra)
+  endif()
+
+  message("Compilation options: " ${COMPILE_OPTIONS})
+  target_compile_options(squawk PRIVATE ${COMPILE_OPTIONS})
 endif(CMAKE_COMPILER_IS_GNUCXX)
 
+# I am not really sure about this solution
+# This should enable plugins to be found in path like /usr/lib/squawk instead of just /usr/lib
+set(PLUGIN_PATH "${CMAKE_INSTALL_PREFIX}/${CMAKE_INSTALL_LIBDIR}/squawk")
+add_compile_definitions(PLUGIN_PATH="${PLUGIN_PATH}")
+
+add_subdirectory(main)
 add_subdirectory(core)
-add_subdirectory(external/simpleCrypt)
 add_subdirectory(packaging)
 add_subdirectory(plugins)
 add_subdirectory(resources)
@@ -131,13 +232,15 @@ add_subdirectory(shared)
 add_subdirectory(translations)
 add_subdirectory(ui)
 
-# Install the executable
+## Install the executable
 install(TARGETS squawk DESTINATION ${CMAKE_INSTALL_BINDIR})
+install(FILES README.md DESTINATION ${CMAKE_INSTALL_DATADIR}/macaw.me/squawk)
+install(FILES LICENSE.md DESTINATION ${CMAKE_INSTALL_DATADIR}/macaw.me/squawk)
 
 if (CMAKE_BUILD_TYPE STREQUAL "Release")
   if (APPLE)
     add_custom_command(TARGET squawk POST_BUILD COMMENT "Running macdeployqt..."
-      COMMAND "${Qt5Widgets_DIR}/../../../bin/macdeployqt" "${CMAKE_CURRENT_BINARY_DIR}/squawk.app"
+      COMMAND "${Qt${QT_VERSION_MAJOR}Widgets_DIR}/../../../bin/macdeployqt" "${CMAKE_CURRENT_BINARY_DIR}/squawk.app"
     )
   endif(APPLE)
 endif()

README.md

@@ -4,17 +4,20 @@
 [![AUR version](https://img.shields.io/aur/version/squawk?style=flat-square)](https://aur.archlinux.org/packages/squawk/)
 [![Liberapay patrons](https://img.shields.io/liberapay/patrons/macaw.me?logo=liberapay&style=flat-square)](https://liberapay.com/macaw.me)
 
-![Squawk screenshot](https://macaw.me/images/squawk/0.1.4.png)
+![Squawk screenshot](https://macaw.me/projects/squawk/0.2.2.png)
 
 ### Prerequisites
 
 - QT 5.12 *(lower versions might work but it wasn't tested)*
-- lmdb
-- CMake 3.0 or higher
+- CMake 3.4 or higher
 - qxmpp 1.1.0 or higher
+- LMDBAL (my own [library](https://git.macaw.me/blue/lmdbal) for lmdb)
 - KDE Frameworks: kwallet (optional)
 - KDE Frameworks: KIO (optional)
-- Boost
+- KDE Frameworks: KConfig (optional)
+- KDE Frameworks: KConfigWidgets (optional)
+- Boost (just one little hpp from there)
+- Imagemagick (for compilation, to rasterize an SVG logo)
 
 ### Getting
 
@@ -30,14 +33,49 @@ $ pacaur -S squawk
 
 ### Building
 
-You can also clone the repo and build it from source
+You can also the repo and build it from source
 
 Squawk requires Qt with SSL enabled. It uses CMake as build system.
 
 Please check the prerequisites and install them before installation.
 
+---
+
+There are several ways to build Squawk. The one you need depends on whether you have `qxmpp` and `lmdbal` installed in your system.
+
+#### Building with system dependencies
+
+This is the easiest way but it requires you to have `qxmpp` and `lmdbal` installed as system packages. Here is what you do:
+
+```
+$ git clone https://git.macaw.me/blue/squawk
+$ cd squawk
+$ mkdir build
+$ cd build
+$ cmake ..
+$ cmake --build .
+```
+
+#### Building with bundled qxmpp
+
+If you don't have any of `qxmpp` or `lmdbal` (or both) installed the process is abit mor complicated.
+On the configuration stage you need to enable one or both entries in the square brackets, depending on what package your system lacks.
+
+Here is what you do
+
+```
+$ git clone --recurse-submodules https://git.macaw.me/blue/squawk
+$ cd squawk
+$ mkdir build
+$ cd build
+$ cmake .. [-D SYSTEM_QXMPP=False] [-D SYSTEM_LMDBAL=False]
+$ cmake --build .
+```
+
 #### For Windows (Mingw-w64) build
 
+**Building for windows is not mainteined, but was possible in the past, you can try, but it probably won't work**
+
 You need Qt for mingw64 (MinGW 64-bit) platform when installing Qt.
 
 The best way to acquire library `lmdb` and `boost` is through Msys2.
@@ -46,51 +84,30 @@ First install Msys2, and then install `mingw-w64-x86_64-lmdb` and `mingw-w64-x86
 
 Then you need to provide the cmake cache entry when calling cmake for configuration:
 
-```
-cmake .. -D LMDB_ROOT_DIR:PATH=<Msys2 Mingw64 Root Directory> -D BOOST_ROOT:PATH=<Msys2 Mingw64 Root Directory>
-```
-
 `<Msys2 Mingw64 Root Directory>`: e.g. `C:/msys64/mingw64`.
 
----
-
-There are two ways to build, it depends whether you have qxmpp installed in your system
-
-#### Building with system qxmpp
-
-Here is what you do
-
-```
-$ git clone https://git.macaw.me/blue/squawk
-$ cd squawk
-$ mkdir build
-$ cd build
-$ cmake .. [-D LMDB_ROOT_DIR:PATH=...] [-D BOOST_ROOT:PATH=...]
-$ cmake --build .
-```
-
-#### Building with bundled qxmpp
-
-Here is what you do
-
 ```
 $ git clone --recurse-submodules https://git.macaw.me/blue/squawk
 $ cd squawk
 $ mkdir build
 $ cd build
-$ cmake .. -D SYSTEM_QXMPP=False [-D LMDB_ROOT_DIR:PATH=...] [-D BOOST_ROOT:PATH=...]
+$ cmake .. -D SYSTEM_QXMPP=False -D SYSTEM_LMDBAL=False -D LMDB_ROOT_DIR:PATH=<Msys2 Mingw64 Root Directory> -D BOOST_ROOT:PATH=<Msys2 Mingw64 Root Directory>
 $ cmake --build .
 ```
 
-You can always refer to `appveyor.yml` to see how AppVeyor build squawk.
+You can always refer to `appveyor.yml` to see how AppVeyor build squawk for windows.
 
 ### List of keys
 
-Here is the list of keys you can pass to configuration phase of `cmake ..`. 
+Here is the list of keys you can pass to configuration phase of `cmake ..`:
+
 - `CMAKE_BUILD_TYPE` - `Debug` just builds showing all warnings, `Release` builds with no warnings and applies optimizations (default is `Debug`)
 - `SYSTEM_QXMPP` - `True` tries to link against `qxmpp` installed in the system, `False` builds bundled `qxmpp` library (default is `True`)
+- `SYSTEM_LMDBAL` - `True` tries to link against `LMDABL` installed in the system, `False` builds bundled `LMDBAL` library (default is `True`)
 - `WITH_KWALLET` - `True` builds the `KWallet` capability module if `KWallet` is installed and if not goes to `False`. `False` disables `KWallet` support (default is `True`)
 - `WITH_KIO` - `True` builds the `KIO` capability module if `KIO` is installed and if not goes to `False`. `False` disables `KIO` support (default is `True`)
+- `WITH_KCONFIG` - `True` builds the `KConfig` and `KConfigWidgets` capability module if such packages are installed and if not goes to `False`. `False` disables `KConfig` and `KConfigWidgets` support (default is `True`)
+- `WITH_OMEMO` - `True` builds the OMEMO encryption, requires `qxmpp` of version >= 1.5.0 built with OMEMO support. `False` disables OMEMO support (default is `False`)
 
 ## License
 

cmake/FindLMDB.cmake

@@ -1,52 +0,0 @@
-#This file is taken from here https://gitlab.ralph.or.at/causal-rt/causal-cpp/, it was GPLv3 license
-#Thank you so much, mr. Ralph Alexander Bariz, I hope you don't mind me using your code
-
-# Try to find LMDB headers and library.
-#
-# Usage of this module as follows:
-#
-#     find_package(LMDB)
-#
-# Variables used by this module, they can change the default behaviour and need
-# to be set before calling find_package:
-#
-#  LMDB_ROOT_DIR          Set this variable to the root installation of
-#                            LMDB if the module has problems finding the
-#                            proper installation path.
-#
-# Variables defined by this module:
-#
-#  LMDB_FOUND               System has LMDB library/headers.
-#  LMDB_LIBRARIES           The LMDB library.
-#  LMDB_INCLUDE_DIRS        The location of LMDB headers.
-
-find_path(LMDB_ROOT_DIR
-  NAMES include/lmdb.h
-  )
-
-find_library(LMDB_LIBRARIES
-  NAMES liblmdb.a liblmdb.so liblmdb.so.a liblmdb.dll.a # We want lmdb to be static, if possible
-  HINTS ${LMDB_ROOT_DIR}/lib
-  )
-
-add_library(lmdb UNKNOWN IMPORTED)
-set_target_properties(lmdb PROPERTIES
-    IMPORTED_LOCATION ${LMDB_LIBRARIES}
-    )
-
-find_path(LMDB_INCLUDE_DIRS
-  NAMES lmdb.h
-  HINTS ${LMDB_ROOT_DIR}/include
-  )
-
-include(FindPackageHandleStandardArgs)
-find_package_handle_standard_args(LMDB DEFAULT_MSG
-  LMDB_LIBRARIES
-  LMDB_INCLUDE_DIRS
-  )
-
-mark_as_advanced(
-  LMDB_ROOT_DIR
-  LMDB_LIBRARIES
-  LMDB_INCLUDE_DIRS
-)

cmake/FindSignal.cmake

@@ -1,15 +0,0 @@
-find_path(Signal_INCLUDE_DIR NAMES signal/signal_protocol.h)
-find_library(Signal_LIBRARY signal-protocol-c)
-mark_as_advanced(Signal_INCLUDE_DIR Signal_LIBRARY)
-
-include(FindPackageHandleStandardArgs)
-find_package_handle_standard_args(Signal REQUIRED_VARS Signal_LIBRARY Signal_INCLUDE_DIR)
-
-if (Signal_FOUND AND NOT TARGET Signal::Signal)
-  add_library(Signal::Signal UNKNOWN IMPORTED)
-  set_target_properties(Signal::Signal PROPERTIES
-    IMPORTED_LINK_INTERFACE_LANGUAGES "C"
-    IMPORTED_LOCATION "${Signal_LIBRARY}"
-    INTERFACE_INCLUDE_DIRECTORIES "${Signal_INCLUDE_DIR}"
-    )
-endif ()

core/CMakeLists.txt

@@ -3,32 +3,34 @@ if(WIN32)
     set(SIGNALCATCHER_SOURCE signalcatcher_win32.cpp)
 endif(WIN32)
 
-target_sources(squawk PRIVATE
+set(SOURCE_FILES
     account.cpp
-  account.h
-  adapterFuctions.cpp
-  archive.cpp
-  archive.h
+    adapterfunctions.cpp
     conference.cpp
-  conference.h
     contact.cpp
-  contact.h
-  main.cpp
-  networkaccess.cpp
-  networkaccess.h
     rosteritem.cpp
-  rosteritem.h
     ${SIGNALCATCHER_SOURCE}
-  signalcatcher.h
     squawk.cpp
+)
+
+set(HEADER_FILES
+    account.h
+    adapterfunctions.h
+    conference.h
+    contact.h
+    rosteritem.h
+    signalcatcher.h
     squawk.h
-  storage.cpp
-  storage.h
-  urlstorage.cpp
-  urlstorage.h
+)
+
+target_sources(squawk PRIVATE
+    ${SOURCE_FILES}
+    ${HEADER_FILES}
 )
 
 target_include_directories(squawk PRIVATE ${LMDB_INCLUDE_DIRS})
 
 add_subdirectory(handlers)
 add_subdirectory(passwordStorageEngines)
+add_subdirectory(components)
+add_subdirectory(delayManager)

core/account.h

@@ -15,9 +15,7 @@
  * You should have received a copy of the GNU General Public License
  * along with this program.  If not, see <http://www.gnu.org/licenses/>.
  */
-
-#ifndef CORE_ACCOUNT_H
-#define CORE_ACCOUNT_H
+#pragma once
 
 #include <QObject>
 #include <QCryptographicHash>
@@ -29,9 +27,14 @@
 
 #include <map>
 #include <set>
+#include <list>
 
 #include <QXmppRosterManager.h>
+#if (QXMPP_VERSION) >= QT_VERSION_CHECK(1, 5, 0)
+#include <QXmppCarbonManagerV2.h>
+#else
 #include <QXmppCarbonManager.h>
+#endif
 #include <QXmppDiscoveryManager.h>
 #include <QXmppMamManager.h>
 #include <QXmppMucManager.h>
@@ -39,32 +42,58 @@
 #include <QXmppBookmarkManager.h>
 #include <QXmppBookmarkSet.h>
 #include <QXmppUploadRequestManager.h>
-#include <QXmppVCardIq.h>
 #include <QXmppVCardManager.h>
 #include <QXmppMessageReceiptManager.h>
+#include <QXmppPubSubManager.h>
 
-#include "shared/shared.h"
+#include <shared/shared.h>
+#include <shared/identity.h>
+#include <shared/info.h>
+#include <shared/clientid.h>
 #include "contact.h"
 #include "conference.h"
-#include "networkaccess.h"
+#include <core/components/networkaccess.h>
+#include <core/delayManager/manager.h>
 
 #include "handlers/messagehandler.h"
 #include "handlers/rosterhandler.h"
+#include "handlers/vcardhandler.h"
+#include "handlers/discoveryhandler.h"
 
-namespace Core
-{
+#if (QXMPP_VERSION) >= QT_VERSION_CHECK(1, 5, 0)
+    #include <QXmppTrustManager.h>
+    #ifdef WITH_OMEMO
+        #include <QXmppOmemoManager.h>
+        #include "handlers/omemohandler.h"
+    #endif
+    #include "handlers/trusthandler.h"
+#endif
 
-class Account : public QObject
-{
+namespace Core {
+
+class Account : public QObject {
     Q_OBJECT
     friend class MessageHandler;
     friend class RosterHandler;
+    friend class VCardHandler;
+    friend class DiscoveryHandler;
+#ifdef WITH_OMEMO
+    friend class OmemoHandler;
+    friend class TrustHandler;
+#endif
 public:
+    enum class Error {
+        authentication,
+        other,
+        none
+    };
+
     Account(
         const QString& p_login, 
         const QString& p_server, 
         const QString& p_password, 
         const QString& p_name, 
+        bool p_active,
         NetworkAccess* p_net, 
         QObject* parent = 0);
     ~Account();
@@ -76,8 +105,12 @@ public:
     QString getPassword() const;
     QString getResource() const;
     QString getAvatarPath() const;
+    QString getBareJid() const;
+    QString getFullJid() const;
     Shared::Availability getAvailability() const;
     Shared::AccountPassword getPasswordType() const;
+    Error getLastError() const;
+    bool getActive() const;
     
     void setName(const QString& p_name);
     void setLogin(const QString& p_login);
@@ -86,8 +119,8 @@ public:
     void setResource(const QString& p_resource);
     void setAvailability(Shared::Availability avail);
     void setPasswordType(Shared::AccountPassword pt);
-    QString getFullJid() const;
     void sendMessage(const Shared::Message& data);
+    void setActive(bool p_active);
     void requestArchive(const QString& jid, int count, const QString& before);
     void subscribeToContact(const QString& jid, const QString& reason);
     void unsubscribeFromContact(const QString& jid, const QString& reason);
@@ -97,19 +130,24 @@ public:
     void removeContactFromGroupRequest(const QString& jid, const QString& groupName);
     void renameContactRequest(const QString& jid, const QString& newName);
     void requestChangeMessage(const QString& jid, const QString& messageId, const QMap<QString, QVariant>& data);
+    void setContactEncryption(const QString& jid, Shared::EncryptionProtocol value);
     
     void setRoomJoined(const QString& jid, bool joined);
     void setRoomAutoJoin(const QString& jid, bool joined);
     void removeRoomRequest(const QString& jid);
     void addRoomRequest(const QString& jid, const QString& nick, const QString& password, bool autoJoin);
-    void uploadVCard(const Shared::VCard& card);
+    void updateInfo(const Shared::Info& info);
     void resendMessage(const QString& jid, const QString& id);
+    void replaceMessage(const QString& originalId, const Shared::Message& data);
+    void invalidatePassword();
+
+    void discoverInfo(const QString& address, const QString& node);
     
 public slots:
     void connect();
     void disconnect();
     void reconnect();
-    void requestVCard(const QString& jid);
+    void requestInfo(const QString& jid);
     
 signals:
     void changed(const QMap<QString, QVariant>& data);
@@ -133,9 +171,12 @@ signals:
     void addRoomParticipant(const QString& jid, const QString& nickName, const QMap<QString, QVariant>& data);
     void changeRoomParticipant(const QString& jid, const QString& nickName, const QMap<QString, QVariant>& data);
     void removeRoomParticipant(const QString& jid, const QString& nickName);
-    void receivedVCard(const QString& jid, const Shared::VCard& card);
+    void infoReady(const Shared::Info& info);
     void uploadFile(const QFileInfo& file, const QUrl& set, const QUrl& get, QMap<QString, QString> headers);
     void uploadFileError(const QString& jid, const QString& messageId, const QString& error);
+    void needPassword();
+    void infoDiscovered(const QString& address, const QString& node, const std::set<Shared::Identity>& identities, const std::set<QString>& features);
+    void pepSupportChanged(Shared::Support support);
     
 private:
     QString name;
@@ -144,7 +185,26 @@ private:
     QXmppConfiguration config;
     QXmppPresence presence;
     Shared::ConnectionState state;
+
+    MessageHandler* mh;
+    RosterHandler* rh;
+    VCardHandler* vh;
+    DiscoveryHandler* dh;
+#if (QXMPP_VERSION) >= QT_VERSION_CHECK(1, 5, 0)
+    TrustHandler* th;
+#endif
+#ifdef WITH_OMEMO
+    OmemoHandler* oh;
+
+    QXmppOmemoManager* om;
+#endif
+#if (QXMPP_VERSION) >= QT_VERSION_CHECK(1, 5, 0)
+    QXmppTrustManager* tm;
+    QXmppCarbonManagerV2* cm;
+    QXmppPubSubManager* psm;
+#else
     QXmppCarbonManager* cm;
+#endif
     QXmppMamManager* am;
     QXmppMucManager* mm;
     QXmppBookmarkManager* bm;
@@ -156,16 +216,14 @@ private:
     bool reconnectScheduled;
     QTimer* reconnectTimer;
     
-    std::set<QString> pendingVCardRequests;
-    
-    QString avatarHash;
-    QString avatarType;
-    bool ownVCardRequestInProgress;
     NetworkAccess* network;
+    DelayManager::Manager* delay;
     Shared::AccountPassword passwordType;
-    
-    MessageHandler* mh;
-    RosterHandler* rh;
+    Error lastError;
+    Shared::Support pepSupport;
+    bool active;
+    bool notReadyPassword;
+    bool loadingOmemo;
     
 private slots:
     void onClientStateChange(QXmppClient::State state);
@@ -179,21 +237,12 @@ private slots:
 
     void onMamLog(QXmppLogger::MessageType type, const QString &msg);
 
-    void onVCardReceived(const QXmppVCardIq& card);
-    void onOwnVCardReceived(const QXmppVCardIq& card);
-
-    void onDiscoveryItemsReceived (const QXmppDiscoveryIq& items);
-    void onDiscoveryInfoReceived (const QXmppDiscoveryIq& info);
     void onContactHistoryResponse(const std::list<Shared::Message>& list, bool last);
   
 private:
     void handleDisconnection();
     void onReconnectTimer();
+    void setPepSupport(Shared::Support support);
+    void runDiscoveryService();
 };
-
-void initializeVCard(Shared::VCard& vCard, const QXmppVCardIq& card);
-void initializeQXmppVCard(QXmppVCardIq& card, const Shared::VCard& vCard);
 }
-
-
-#endif // CORE_ACCOUNT_H

core/adapterfunctions.cpp

@@ -15,10 +15,8 @@
  * You should have received a copy of the GNU General Public License
  * along with this program.  If not, see <http://www.gnu.org/licenses/>.
  */
-#ifndef CORE_ADAPTER_FUNCTIONS_H
-#define CORE_ADAPTER_FUNCTIONS_H
 
-#include "account.h"
+#include "adapterfunctions.h"
 
 void Core::initializeVCard(Shared::VCard& vCard, const QXmppVCardIq& card)
 {
@@ -264,12 +262,10 @@ void Core::initializeQXmppVCard(QXmppVCardIq& iq, const Shared::VCard& card) {
             phone.setType(phone.type() | QXmppVCardPhone::Preferred);
         }
     }
-    for (const std::pair<QString, QXmppVCardPhone>& phone : phones) {
+    for (const std::pair<const QString, QXmppVCardPhone>& phone : phones) {
         phs.push_back(phone.second);
     }
     
     iq.setEmails(emails);
     iq.setPhones(phs);
 }
-
-#endif // CORE_ADAPTER_FUNCTIONS_H

core/adapterfunctions.h

@@ -0,0 +1,47 @@
+/*
+ * Squawk messenger.
+ * Copyright (C) 2019  Yury Gubich <blue@macaw.me>
+ *
+ * This program is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation, either version 3 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program.  If not, see <http://www.gnu.org/licenses/>.
+ */
+#ifndef CORE_ADAPTER_FUNCTIONS_H
+#define CORE_ADAPTER_FUNCTIONS_H
+
+#include <QXmppVCardIq.h>
+#include <QXmppTask.h>
+#include <QXmppPromise.h>
+#include <shared/vcard.h>
+
+namespace Core {
+
+void initializeVCard(Shared::VCard& vCard, const QXmppVCardIq& card);
+void initializeQXmppVCard(QXmppVCardIq& card, const Shared::VCard& vCard);
+
+template<typename T>
+QXmppTask<T> makeReadyTask(T &&value) {
+    QXmppPromise<T> promise;
+    promise.finish(std::move(value));
+    return promise.task();
+}
+
+inline QXmppTask<void> makeReadyTask() {
+    QXmppPromise<void> promise;
+    promise.finish();
+    return promise.task();
+}
+
+}
+
+
+#endif // CORE_ADAPTER_FUNCTIONS_H

core/archive.h

@@ -1,197 +0,0 @@
-/*
- * Squawk messenger. 
- * Copyright (C) 2019  Yury Gubich <blue@macaw.me>
- *
- * This program is free software: you can redistribute it and/or modify
- * it under the terms of the GNU General Public License as published by
- * the Free Software Foundation, either version 3 of the License, or
- * (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program.  If not, see <http://www.gnu.org/licenses/>.
- */
-
-#ifndef CORE_ARCHIVE_H
-#define CORE_ARCHIVE_H
-
-#include <QObject>
-#include <QCryptographicHash>
-#include <QMimeDatabase>
-#include <QMimeType>
-
-#include "shared/message.h"
-#include "shared/exception.h"
-#include <lmdb.h>
-#include <list>
-
-namespace Core {
-
-class Archive : public QObject
-{
-    Q_OBJECT
-public:
-    class AvatarInfo;
-    
-    Archive(const QString& jid, QObject* parent = 0);
-    ~Archive();
-    
-    void open(const QString& account);
-    void close();
-    
-    bool addElement(const Shared::Message& message);
-    unsigned int addElements(const std::list<Shared::Message>& messages);
-    Shared::Message getElement(const QString& id) const;
-    bool hasElement(const QString& id) const;
-    void changeMessage(const QString& id, const QMap<QString, QVariant>& data);
-    Shared::Message oldest();
-    QString oldestId();
-    Shared::Message newest();
-    QString newestId();
-    void clear();
-    long unsigned int size() const;
-    std::list<Shared::Message> getBefore(int count, const QString& id);
-    bool isFromTheBeginning();
-    void setFromTheBeginning(bool is);
-    bool setAvatar(const QByteArray& data, AvatarInfo& info, bool generated = false, const QString& resource = "");
-    AvatarInfo getAvatarInfo(const QString& resource = "") const;
-    bool readAvatarInfo(AvatarInfo& target, const QString& resource = "") const;
-    void readAllResourcesAvatars(std::map<QString, AvatarInfo>& data) const;
-    QString idByStanzaId(const QString& stanzaId) const;
-    QString stanzaIdById(const QString& id) const;
-    
-public:
-    const QString jid;
-    
-public:
-    class Directory: 
-    public Utils::Exception
-    {
-    public:
-        Directory(const std::string& p_path):Exception(), path(p_path){}
-        
-        std::string getMessage() const{return "Can't create directory for database at " + path;}
-    private:
-        std::string path;
-    };
-    
-    class Closed: 
-    public Utils::Exception
-    {
-    public:
-        Closed(const std::string& op, const std::string& acc):Exception(), operation(op), account(acc){}
-        
-        std::string getMessage() const{return "An attempt to perform operation " + operation + " on closed archive for " + account;}
-    private:
-        std::string operation;
-        std::string account;
-    };
-    
-    class NotFound: 
-    public Utils::Exception
-    {
-    public:
-        NotFound(const std::string& k, const std::string& acc):Exception(), key(k), account(acc){}
-        
-        std::string getMessage() const{return "Element for id " + key + " wasn't found in database " + account;}
-    private:
-        std::string key;
-        std::string account;
-    };
-    
-    class Empty: 
-    public Utils::Exception
-    {
-    public:
-        Empty(const std::string& acc):Exception(), account(acc){}
-        
-        std::string getMessage() const{return "An attempt to read ordered elements from database " + account + " but it's empty";}
-    private:
-        std::string account;
-    };
-    
-    class Exist: 
-    public Utils::Exception
-    {
-    public:
-        Exist(const std::string& acc, const std::string& p_key):Exception(), account(acc), key(p_key){}
-        
-        std::string getMessage() const{return "An attempt to insert element " + key + " to database " + account + " but it already has an element with given id";}
-    private:
-        std::string account;
-        std::string key;
-    };
-    
-    class NoAvatar: 
-    public Utils::Exception
-    {
-    public:
-        NoAvatar(const std::string& el, const std::string& res):Exception(), element(el), resource(res){
-            if (resource.size() == 0) {
-                resource = "for himself";
-            }
-        }
-        
-        std::string getMessage() const{return "Element " + element + " has no avatar for " + resource ;}
-    private:
-        std::string element;
-        std::string resource;
-    };
-    
-    class Unknown:
-    public Utils::Exception
-    {
-    public:
-        Unknown(const std::string& acc, const std::string& message):Exception(), account(acc), msg(message){}
-        
-        std::string getMessage() const{return "Unknown error on database " + account + ": " + msg;}
-    private:
-        std::string account;
-        std::string msg;
-    };
-    
-    
-    class AvatarInfo {
-    public:
-        AvatarInfo();
-        AvatarInfo(const QString& type, const QByteArray& hash, bool autogenerated);
-        
-        void deserialize(char* pointer, uint32_t size);
-        void serialize(QByteArray* ba) const;
-        
-        QString type;
-        QByteArray hash;
-        bool autogenerated;
-    };
-    
-private:
-    bool opened;
-    bool fromTheBeginning;
-    MDB_env* environment;
-    MDB_dbi main;           //id to message
-    MDB_dbi order;          //time to id
-    MDB_dbi stats;
-    MDB_dbi avatars;        
-    MDB_dbi sid;            //stanzaId to id
-    
-    bool getStatBoolValue(const std::string& id, MDB_txn* txn);
-    std::string getStatStringValue(const std::string& id, MDB_txn* txn);
-    
-    bool setStatValue(const std::string& id, bool value, MDB_txn* txn);
-    bool setStatValue(const std::string& id, const std::string& value, MDB_txn* txn);
-    bool readAvatarInfo(AvatarInfo& target, const std::string& res, MDB_txn* txn) const;
-    void printOrder();
-    void printKeys();
-    bool dropAvatar(const std::string& resource);
-    Shared::Message getMessage(const std::string& id, MDB_txn* txn) const;
-    Shared::Message getStoredMessage(MDB_txn *txn, MDB_cursor* cursor, MDB_cursor_op op, MDB_val* key, MDB_val* value, int& rc);
-    Shared::Message edge(bool end);
-};
-
-}
-
-#endif // CORE_ARCHIVE_H

core/components/CMakeLists.txt

@@ -0,0 +1,18 @@
+set(SOURCE_FILES
+    networkaccess.cpp
+    clientcache.cpp
+    urlstorage.cpp
+    archive.cpp
+)
+
+set(HEADER_FILES
+    networkaccess.h
+    clientcache.h
+    urlstorage.h
+    archive.h
+)
+
+target_sources(squawk PRIVATE
+    ${SOURCE_FILES}
+    ${HEADER_FILES}
+)

core/components/archive.cpp

@@ -0,0 +1,419 @@
+/*
+ * Squawk messenger. 
+ * Copyright (C) 2019  Yury Gubich <blue@macaw.me>
+ *
+ * This program is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation, either version 3 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program.  If not, see <http://www.gnu.org/licenses/>.
+ */
+
+#include "archive.h"
+
+#include <sys/stat.h>
+#include <sys/types.h>
+
+#include <QDebug>
+
+Core::Archive::Archive(const QString& account, const QString& p_jid, QObject* parent):
+    QObject(parent),
+    jid(p_jid),
+    account(account),
+    opened(false),
+    db(account + "/" + jid),
+    messages(db.addStorage<QString, Shared::Message>("messages")),
+    order(db.addStorage<uint64_t, QString>("order", true)),
+    stats(db.addStorage<QString, QVariant>("stats")),
+    avatars(db.addStorage<QString, AvatarInfo>("avatars")),
+    stanzaIdToId(db.addStorage<QString, QString>("stanzaIdToId")),
+    cursor(order->createCursor())
+{}
+
+Core::Archive::~Archive() {
+    close();
+}
+
+void Core::Archive::open() {
+    db.open();
+    LMDBAL::WriteTransaction txn = db.beginTransaction();
+
+    AvatarInfo info;
+    bool hasAvatar = false;
+    try {
+        avatars->getRecord(jid, info, txn);
+        hasAvatar = true;
+    } catch (const LMDBAL::NotFound& e) {}
+
+    if (!hasAvatar)
+        return;
+
+    QFile ava(db.getPath() + "/" + jid + "." + info.type);
+    if (ava.exists())
+        return;
+
+    try {
+        avatars->removeRecord(jid, txn);
+        txn.commit();
+    } catch (const std::exception& e) {
+        qDebug() << e.what();
+        qDebug() << "error opening archive" << jid << "for account" << account
+        << ". There is supposed to be avatar but the file doesn't exist, couldn't even drop it, it surely will lead to an error";
+    }
+}
+
+void Core::Archive::close() {
+    db.close();
+}
+
+bool Core::Archive::addElement(const Shared::Message& message) {
+    QString id = message.getId();
+    qDebug() << "Adding message with id " << id;
+
+    try {
+        LMDBAL::WriteTransaction txn = db.beginTransaction();
+        messages->addRecord(id, message, txn);
+        order->addRecord(message.getTime().toMSecsSinceEpoch(), id, txn);
+        QString stanzaId = message.getStanzaId();
+        if (!stanzaId.isEmpty())
+            stanzaIdToId->addRecord(stanzaId, id, txn);
+
+        txn.commit();
+        return true;
+    } catch (const std::exception& e) {
+        qDebug() << "Could not add message with id " + id;
+        qDebug() << e.what();
+    }
+
+    return false;
+}
+
+void Core::Archive::clear() {
+    db.drop();
+}
+
+Shared::Message Core::Archive::getElement(const QString& id) const {
+    return messages->getRecord(id);
+}
+
+bool Core::Archive::hasElement(const QString& id) const {
+    return messages->checkRecord(id);
+}
+
+void Core::Archive::changeMessage(const QString& id, const QMap<QString, QVariant>& data) {
+    LMDBAL::WriteTransaction txn = db.beginTransaction();
+    Shared::Message msg = messages->getRecord(id, txn);
+
+    bool hadStanzaId = !msg.getStanzaId().isEmpty();
+    QDateTime oTime = msg.getTime();
+    bool idChange = msg.change(data);
+    QString newId = msg.getId();
+    QDateTime nTime = msg.getTime();
+
+    bool orderChange = oTime != nTime;
+    if (idChange || orderChange) {
+        if (idChange)
+            messages->removeRecord(id, txn);
+
+        if (orderChange)
+            order->removeRecord(oTime.toMSecsSinceEpoch(), txn);
+
+        order->forceRecord(nTime.toMSecsSinceEpoch(), newId, txn);
+    }
+
+    QString sid = msg.getStanzaId();
+    if (!sid.isEmpty() && (idChange || !hadStanzaId))
+        stanzaIdToId->forceRecord(sid, newId, txn);
+
+    messages->forceRecord(newId, msg, txn);
+    txn.commit();
+}
+
+Shared::Message Core::Archive::newest() const {
+    LMDBAL::Transaction txn = db.beginReadOnlyTransaction();
+
+    try {
+        cursor.open(txn);
+        while (true) {
+            std::pair<uint64_t, QString> pair = cursor.prev();
+            Shared::Message msg = messages->getRecord(pair.second, txn);
+            if (msg.serverStored()) {
+                cursor.close();
+                return msg;
+            }
+        }
+    } catch (...) {
+        cursor.close();
+        throw;
+    }
+}
+
+QString Core::Archive::newestId() const {
+    Shared::Message msg = newest();
+    return msg.getId();
+}
+
+QString Core::Archive::oldestId() const {
+    Shared::Message msg = oldest();
+    return msg.getId();
+}
+
+Shared::Message Core::Archive::oldest() const {
+    LMDBAL::Transaction txn = db.beginReadOnlyTransaction();
+
+    try {
+        cursor.open(txn);
+        while (true) {
+            std::pair<uint64_t, QString> pair = cursor.next();
+            Shared::Message msg = messages->getRecord(pair.second, txn);
+            if (msg.serverStored()) {
+                cursor.close();
+                return msg;
+            }
+        }
+    } catch (...) {
+        cursor.close();
+        throw;
+    }
+}
+
+unsigned int Core::Archive::addElements(const std::list<Shared::Message>& messages) {
+    unsigned int success = 0;
+    LMDBAL::WriteTransaction txn = db.beginTransaction();
+    for (const Shared::Message& message : messages) {
+        QString id = message.getId();
+        bool added = false;
+        try {
+            Core::Archive::messages->addRecord(id, message, txn);
+            added = true;
+        } catch (const LMDBAL::Exist& e) {}
+
+        if (!added)
+            continue;
+
+        order->addRecord(message.getTime().toMSecsSinceEpoch(), id, txn);
+
+        QString sid = message.getStanzaId();
+        if (!sid.isEmpty())
+            stanzaIdToId->addRecord(sid, id, txn);
+
+        ++success;
+    }
+    txn.commit();
+    return success;
+}
+
+long unsigned int Core::Archive::size() const {
+    return order->count();
+}
+
+std::list<Shared::Message> Core::Archive::getBefore(unsigned int count, const QString& id) {
+    LMDBAL::Transaction txn = db.beginReadOnlyTransaction();
+    std::list<Shared::Message> res;
+    try {
+        cursor.open(txn);
+        if (!id.isEmpty()) {
+            Shared::Message reference = messages->getRecord(id, txn);
+            uint64_t stamp = reference.getTime().toMSecsSinceEpoch();
+            cursor.set(stamp);
+        }
+
+        for (unsigned int i = 0; i < count; ++i) {
+            std::pair<uint64_t, QString> pair;
+            cursor.prev(pair.first, pair.second);
+
+            res.emplace_back();
+            Shared::Message& msg = res.back();
+            messages->getRecord(pair.second, msg, txn);
+        }
+        cursor.close();
+
+        return res;
+    } catch (const LMDBAL::NotFound& e) {
+        cursor.close();
+        if (res.empty())
+            throw e;
+        else
+            return res;
+    } catch (...) {
+        cursor.close();
+        throw;
+    }
+}
+
+bool Core::Archive::isFromTheBeginning() const {
+    try {
+        return stats->getRecord("fromTheBeginning").toBool();
+    } catch (const LMDBAL::NotFound& e) {
+        return false;
+    }
+}
+
+void Core::Archive::setFromTheBeginning(bool is) {
+    stats->forceRecord("fromTheBeginning", is);
+}
+
+Shared::EncryptionProtocol Core::Archive::encryption() const {
+    try {
+        return stats->getRecord("encryption").value<Shared::EncryptionProtocol>();
+    } catch (const LMDBAL::NotFound& e) {
+        return Shared::EncryptionProtocol::none;
+    }
+}
+
+bool Core::Archive::setEncryption(Shared::EncryptionProtocol is) {
+    LMDBAL::WriteTransaction txn = db.beginTransaction();
+    Shared::EncryptionProtocol current = Shared::EncryptionProtocol::none;
+    try {
+        current = stats->getRecord("encryption", txn).value<Shared::EncryptionProtocol>();
+    } catch (const LMDBAL::NotFound& e) {}
+
+    if (is != current) {
+        stats->forceRecord("encryption", static_cast<uint8_t>(is), txn);
+        txn.commit();
+        return true;
+    }
+
+    return false;
+}
+
+QString Core::Archive::idByStanzaId(const QString& stanzaId) const {
+    return stanzaIdToId->getRecord(stanzaId);
+}
+
+QString Core::Archive::stanzaIdById(const QString& id) const {
+    try {
+        Shared::Message msg = getElement(id);
+        return msg.getStanzaId();
+    } catch (const LMDBAL::NotFound& e) {
+        return QString();
+    }
+}
+
+bool Core::Archive::setAvatar(const QByteArray& data, AvatarInfo& newInfo, bool generated, const QString& resource) {
+    LMDBAL::WriteTransaction txn = db.beginTransaction();
+    AvatarInfo oldInfo;
+    bool haveAvatar = false;
+    QString res = resource.isEmpty() ? jid : resource;
+    try {
+        avatars->getRecord(res, oldInfo, txn);
+        haveAvatar = true;
+    } catch (const LMDBAL::NotFound& e) {}
+    
+    if (data.size() == 0) {
+        if (!haveAvatar)
+            return false;
+
+        avatars->removeRecord(res, txn);
+        txn.commit();
+        return true;
+    }
+
+    QString currentPath = db.getPath();
+    bool needToRemoveOld = false;
+    QCryptographicHash hash(QCryptographicHash::Sha1);
+    hash.addData(data);
+    QByteArray newHash(hash.result());
+    if (haveAvatar) {
+        if (!generated && !oldInfo.autogenerated && oldInfo.hash == newHash)
+            return false;
+
+        QFile oldAvatar(currentPath + "/" + res + "." + oldInfo.type);
+        if (oldAvatar.exists()) {
+            if (oldAvatar.rename(currentPath + "/" + res + "." + oldInfo.type + ".bak")) {
+                needToRemoveOld = true;
+            } else {
+                qDebug() << "Can't change avatar: couldn't get rid of the old avatar" << oldAvatar.fileName();
+                return false;
+            }
+        }
+    }
+    QMimeDatabase mimedb;
+    QMimeType type = mimedb.mimeTypeForData(data);
+    QString ext = type.preferredSuffix();
+    QFile newAvatar(currentPath + "/" + res + "." + ext);
+    if (!newAvatar.open(QFile::WriteOnly)) {
+        qDebug() << "Can't change avatar: cant open file to write" << newAvatar.fileName() << "rolling back to the previous state";
+        if (needToRemoveOld) {
+            QFile oldAvatar(currentPath + "/" + res + "." + oldInfo.type + ".bak");
+            oldAvatar.rename(currentPath + "/" + res + "." + oldInfo.type);
+        }
+        return false;
+    }
+
+    newAvatar.write(data);
+    newAvatar.close();
+
+    newInfo.type = ext;
+    newInfo.hash = newHash;
+    newInfo.autogenerated = generated;
+    try {
+        avatars->forceRecord(res, newInfo, txn);
+        txn.commit();
+    } catch (...) {
+        qDebug() << "Can't change avatar: couldn't store changes to database for" << newAvatar.fileName() << "rolling back to the previous state";
+        if (needToRemoveOld) {
+            QFile oldAvatar(currentPath + "/" + res + "." + oldInfo.type + ".bak");
+            oldAvatar.rename(currentPath + "/" + res + "." + oldInfo.type);
+        }
+        return false;
+    }
+
+    if (needToRemoveOld) {
+        QFile oldAvatar(currentPath + "/" + res + "." + oldInfo.type + ".bak");
+        oldAvatar.remove();
+    }
+    return true;
+}
+
+bool Core::Archive::readAvatarInfo(Core::Archive::AvatarInfo& target, const QString& resource) const {
+    try {
+        avatars->getRecord(resource.isEmpty() ? jid : resource, target);
+        return true;
+    } catch (const LMDBAL::NotFound& e) {
+        return false;
+    }
+}
+
+void Core::Archive::readAllResourcesAvatars(std::map<QString, AvatarInfo>& data) const {
+    avatars->readAll(data);
+}
+
+Core::Archive::AvatarInfo Core::Archive::getAvatarInfo(const QString& resource) const {
+    return avatars->getRecord(resource);
+}
+
+Core::Archive::AvatarInfo::AvatarInfo():
+    type(),
+    hash(),
+    autogenerated(false)
+{}
+
+Core::Archive::AvatarInfo::AvatarInfo(const QString& p_type, const QByteArray& p_hash, bool p_autogenerated):
+    type(p_type),
+    hash(p_hash),
+    autogenerated(p_autogenerated)
+{}
+
+QDataStream & operator<<(QDataStream& out, const Core::Archive::AvatarInfo& info) {
+    out << info.type;
+    out << info.hash;
+    out << info.autogenerated;
+
+    return out;
+}
+
+QDataStream & operator>>(QDataStream& in, Core::Archive::AvatarInfo& info) {
+    in >> info.type;
+    in >> info.hash;
+    in >> info.autogenerated;
+
+    return in;
+}

core/components/archive.h

@@ -0,0 +1,101 @@
+/*
+ * Squawk messenger. 
+ * Copyright (C) 2019  Yury Gubich <blue@macaw.me>
+ *
+ * This program is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation, either version 3 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program.  If not, see <http://www.gnu.org/licenses/>.
+ */
+
+#pragma once
+
+#include <QObject>
+#include <QCryptographicHash>
+#include <QMimeDatabase>
+#include <QMimeType>
+#include <QDataStream>
+
+#include "shared/enums.h"
+#include "shared/message.h"
+#include "shared/exception.h"
+#include <list>
+
+#include <base.h>
+#include <storage.h>
+#include <cursor.h>
+
+namespace Core {
+
+class Archive : public QObject {
+    Q_OBJECT
+public:
+    class AvatarInfo;
+    
+    Archive(const QString& account, const QString& jid, QObject* parent = 0);
+    ~Archive();
+    
+    void open();
+    void close();
+    
+    bool addElement(const Shared::Message& message);
+    unsigned int addElements(const std::list<Shared::Message>& messages);
+    Shared::Message getElement(const QString& id) const;
+    bool hasElement(const QString& id) const;
+    void changeMessage(const QString& id, const QMap<QString, QVariant>& data);
+    Shared::Message oldest() const;
+    QString oldestId() const;
+    Shared::Message newest() const;
+    QString newestId() const;
+    void clear();
+    long unsigned int size() const;
+    std::list<Shared::Message> getBefore(unsigned int count, const QString& id);
+    bool isFromTheBeginning() const;
+    void setFromTheBeginning(bool is);
+    Shared::EncryptionProtocol encryption() const;
+    bool setEncryption(Shared::EncryptionProtocol value);     //returns true if changed, false otherwise
+    bool setAvatar(const QByteArray& data, AvatarInfo& info, bool generated = false, const QString& resource = "");
+    AvatarInfo getAvatarInfo(const QString& resource = "") const;
+    bool readAvatarInfo(AvatarInfo& target, const QString& resource = "") const;
+    void readAllResourcesAvatars(std::map<QString, AvatarInfo>& data) const;
+    QString idByStanzaId(const QString& stanzaId) const;
+    QString stanzaIdById(const QString& id) const;
+    
+public:
+    const QString jid;
+    const QString account;
+    
+public:
+    class AvatarInfo {
+    public:
+        AvatarInfo();
+        AvatarInfo(const QString& type, const QByteArray& hash, bool autogenerated);
+        
+        QString type;
+        QByteArray hash;
+        bool autogenerated;
+    };
+    
+private:
+    bool opened;
+    LMDBAL::Base db;
+    LMDBAL::Storage<QString, Shared::Message>* messages;
+    LMDBAL::Storage<uint64_t, QString>* order;
+    LMDBAL::Storage<QString, QVariant>* stats;
+    LMDBAL::Storage<QString, AvatarInfo>* avatars;
+    LMDBAL::Storage<QString, QString>* stanzaIdToId;
+    mutable LMDBAL::Cursor<uint64_t, QString> cursor;
+};
+
+}
+
+QDataStream& operator << (QDataStream &out, const Core::Archive::AvatarInfo& info);
+QDataStream& operator >> (QDataStream &in, Core::Archive::AvatarInfo& info);

core/components/clientcache.cpp

@@ -0,0 +1,77 @@
+/*
+ * Squawk messenger.
+ * Copyright (C) 2019  Yury Gubich <blue@macaw.me>
+ *
+ * This program is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation, either version 3 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program.  If not, see <http://www.gnu.org/licenses/>.
+ */
+
+#include "clientcache.h"
+
+#include <QDebug>
+
+Core::ClientCache::ClientCache():
+    db("clients"),
+    cache(db.addCache<QString, Shared::ClientInfo>("info")),
+    requested(),
+    specific()
+{
+    db.open();
+}
+
+Core::ClientCache::~ClientCache() {
+    db.close();
+}
+
+void Core::ClientCache::open() {
+    db.open();}
+
+void Core::ClientCache::close() {
+    db.close();}
+
+bool Core::ClientCache::checkClient(const Shared::ClientId& p_id) {
+    QString id = p_id.getId();
+    if (requested.count(id) == 0 && !cache->checkRecord(id)) {
+        requested.emplace(id, p_id);
+        emit requestClientInfo(id);
+        return false;
+    }
+
+    return true;
+}
+
+bool Core::ClientCache::registerClientInfo (
+    const QString& sourceFullJid,
+    const QString& id,
+    const std::set<Shared::Identity>& identities,
+    const std::set<QString>& features)
+{
+    std::map<QString, Shared::ClientInfo>::iterator itr = requested.find(id);
+    if (itr != requested.end()) {
+        Shared::ClientInfo& info = itr->second;
+        info.identities = identities;
+        info.extensions = features;
+
+        bool valid = info.valid();
+        if (valid) {
+            cache->addRecord(id, info);
+        } else {
+            info.specificPresence = sourceFullJid;
+            specific.insert(std::make_pair(sourceFullJid, info));
+        }
+        requested.erase(id);
+        return valid;
+    } else {
+        return false;
+    }
+}

core/components/clientcache.h

@@ -0,0 +1,63 @@
+/*
+ * Squawk messenger.
+ * Copyright (C) 2019  Yury Gubich <blue@macaw.me>
+ *
+ * This program is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation, either version 3 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program.  If not, see <http://www.gnu.org/licenses/>.
+ */
+
+#pragma once
+
+#include <map>
+#include <set>
+
+#include <QObject>
+#include <QString>
+
+#include <cache.h>
+
+#include <shared/clientid.h>
+#include <shared/clientinfo.h>
+#include <shared/identity.h>
+
+namespace Core {
+
+class ClientCache : public QObject {
+    Q_OBJECT
+public:
+    ClientCache();
+    ~ClientCache();
+
+    void open();
+    void close();
+
+signals:
+    void requestClientInfo(const QString& id);
+
+public slots:
+    bool checkClient(const Shared::ClientId& id);
+    bool registerClientInfo(
+        const QString& sourceFullJid,
+        const QString& id,
+        const std::set<Shared::Identity>& identities,
+        const std::set<QString>& features
+    );
+
+private:
+    LMDBAL::Base db;
+    LMDBAL::Cache<QString, Shared::ClientInfo>* cache;
+    std::map<QString, Shared::ClientInfo> requested;
+    std::map<QString, Shared::ClientInfo> specific;
+};
+
+}

core/components/networkaccess.cpp

@@ -16,7 +16,6 @@
  * along with this program.  If not, see <http://www.gnu.org/licenses/>.
  */
 
-
 #include <QtWidgets/QApplication>
 #include <QtCore/QDir>
 
@@ -28,17 +27,18 @@ Core::NetworkAccess::NetworkAccess(QObject* parent):
     manager(0),
     storage("fileURLStorage"),
     downloads(),
-    uploads()
+    uploads(),
+    currentPath()
 {
+    QSettings settings;
+    currentPath = settings.value("downloadsPath").toString();
 }
 
-Core::NetworkAccess::~NetworkAccess()
-{
+Core::NetworkAccess::~NetworkAccess() {
     stop();
 }
 
-void Core::NetworkAccess::downladFile(const QString& url)
-{
+void Core::NetworkAccess::downladFile(const QString& url) {
     std::map<QString, Transfer*>::iterator itr = downloads.find(url);
     if (itr != downloads.end()) {
         qDebug() << "NetworkAccess received a request to download a file" << url << ", but the file is currently downloading, skipping";
@@ -47,27 +47,25 @@ void Core::NetworkAccess::downladFile(const QString& url)
             std::pair<QString, std::list<Shared::MessageInfo>> p = storage.getPath(url);
             if (p.first.size() > 0) {
                 QFileInfo info(p.first);
-                if (info.exists() && info.isFile()) {
+                if (info.exists() && info.isFile())
                     emit downloadFileComplete(p.second, p.first);
+                else
+                    startDownload(p.second, url);
             } else {
                 startDownload(p.second, url);
             }
-            } else {
-                startDownload(p.second, url);
-            }
-        } catch (const Archive::NotFound& e) {
+        } catch (const LMDBAL::NotFound& e) {
             qDebug() << "NetworkAccess received a request to download a file" << url << ", but there is now record of which message uses that file, downloading anyway";
             storage.addFile(url);
             startDownload(std::list<Shared::MessageInfo>(), url);
-        } catch (const Archive::Unknown& e) {
+        } catch (const LMDBAL::Unknown& e) {
             qDebug() << "Error requesting file path:" << e.what();
             emit loadFileError(std::list<Shared::MessageInfo>(), QString("Database error: ") + e.what(), false);
         }
     }
 }
 
-void Core::NetworkAccess::start()
-{
+void Core::NetworkAccess::start() {
     if (!running) {
         manager = new QNetworkAccessManager();
 #if QT_VERSION >= QT_VERSION_CHECK(5, 15, 0)
@@ -78,8 +76,7 @@ void Core::NetworkAccess::start()
     }
 }
 
-void Core::NetworkAccess::stop()
-{
+void Core::NetworkAccess::stop() {
     if (running) {
         storage.close();
         manager->deleteLater();
@@ -93,8 +90,7 @@ void Core::NetworkAccess::stop()
     }
 }
 
-void Core::NetworkAccess::onDownloadProgress(qint64 bytesReceived, qint64 bytesTotal)
-{
+void Core::NetworkAccess::onDownloadProgress(qint64 bytesReceived, qint64 bytesTotal) {
     QNetworkReply* rpl = static_cast<QNetworkReply*>(sender());
     QString url = rpl->url().toString();
     std::map<QString, Transfer*>::const_iterator itr = downloads.find(url);
@@ -112,8 +108,7 @@ void Core::NetworkAccess::onDownloadProgress(qint64 bytesReceived, qint64 bytesT
     }
 }
 
-void Core::NetworkAccess::onDownloadError(QNetworkReply::NetworkError code)
-{
+void Core::NetworkAccess::onDownloadError(QNetworkReply::NetworkError code) {
     qDebug() << "DEBUG: DOWNLOAD ERROR";
     QNetworkReply* rpl = static_cast<QNetworkReply*>(sender());
     qDebug() << rpl->errorString();
@@ -131,12 +126,11 @@ void Core::NetworkAccess::onDownloadError(QNetworkReply::NetworkError code)
     }
 }
 
-void Core::NetworkAccess::onDownloadSSLError(const QList<QSslError>& errors)
-{
+void Core::NetworkAccess::onDownloadSSLError(const QList<QSslError>& errors) {
     qDebug() << "DEBUG: DOWNLOAD SSL ERRORS";
-    for (const QSslError& err : errors) {
+    for (const QSslError& err : errors)
         qDebug() << err.errorString();
-    }
+
     QNetworkReply* rpl = static_cast<QNetworkReply*>(sender());
     QString url = rpl->url().toString();
     std::map<QString, Transfer*>::const_iterator itr = downloads.find(url);
@@ -151,9 +145,7 @@ void Core::NetworkAccess::onDownloadSSLError(const QList<QSslError>& errors)
     }
 }
 
-
-QString Core::NetworkAccess::getErrorText(QNetworkReply::NetworkError code)
-{
+QString Core::NetworkAccess::getErrorText(QNetworkReply::NetworkError code) {
     QString errorText("");
     switch (code) {
         case QNetworkReply::NoError:
@@ -277,8 +269,7 @@ QString Core::NetworkAccess::getErrorText(QNetworkReply::NetworkError code)
 }
 
 
-void Core::NetworkAccess::onDownloadFinished()
-{
+void Core::NetworkAccess::onDownloadFinished() {
     qDebug() << "DEBUG: DOWNLOAD FINISHED";
     QNetworkReply* rpl = static_cast<QNetworkReply*>(sender());
     QString url = rpl->url().toString();
@@ -293,16 +284,16 @@ void Core::NetworkAccess::onDownloadFinished()
             QStringList hops = url.split("/");
             QString fileName = hops.back();
             QString jid;
-            if (dwn->messages.size() > 0) {
+            if (dwn->messages.size() > 0)
                 jid = dwn->messages.front().jid;
-            } else {
+            else
                 qDebug() << "An attempt to save the file but it doesn't seem to belong to any message, download is definately going to be broken";
-            }
+
             QString path = prepareDirectory(jid);
             if (path.size() > 0) {
                 path = checkFileName(fileName, path);
                 
-                QFile file(path);
+                QFile file(Shared::resolvePath(path));
                 if (file.open(QIODevice::WriteOnly)) {
                     file.write(dwn->reply->readAll());
                     file.close();
@@ -316,12 +307,11 @@ void Core::NetworkAccess::onDownloadFinished()
                 err = "Couldn't prepare a directory for file";
             }
             
-            if (path.size() > 0) {
+            if (path.size() > 0)
                 emit downloadFileComplete(dwn->messages, path);
-            } else {
+            else
                 emit loadFileError(dwn->messages, "Error saving file " + url + "; " + err, false);
         }
-        }
         
         dwn->reply->deleteLater();
         delete dwn;
@@ -329,8 +319,7 @@ void Core::NetworkAccess::onDownloadFinished()
     }
 }
 
-void Core::NetworkAccess::startDownload(const std::list<Shared::MessageInfo>& msgs, const QString& url)
-{
+void Core::NetworkAccess::startDownload(const std::list<Shared::MessageInfo>& msgs, const QString& url) {
     Transfer* dwn = new Transfer({msgs, 0, 0, true, "", url, 0});
     QNetworkRequest req(url);
     dwn->reply = manager->get(req);
@@ -346,8 +335,7 @@ void Core::NetworkAccess::startDownload(const std::list<Shared::MessageInfo>& ms
     emit loadFileProgress(dwn->messages, 0, false);
 }
 
-void Core::NetworkAccess::onUploadError(QNetworkReply::NetworkError code)
-{
+void Core::NetworkAccess::onUploadError(QNetworkReply::NetworkError code) {
     QNetworkReply* rpl = static_cast<QNetworkReply*>(sender());
     QString url = rpl->url().toString();
     std::map<QString, Transfer*>::const_iterator itr = uploads.find(url);
@@ -365,8 +353,7 @@ void Core::NetworkAccess::onUploadError(QNetworkReply::NetworkError code)
     }
 }
 
-void Core::NetworkAccess::onUploadFinished()
-{
+void Core::NetworkAccess::onUploadFinished() {
     QNetworkReply* rpl = static_cast<QNetworkReply*>(sender());
     QString url = rpl->url().toString();
     std::map<QString, Transfer*>::const_iterator itr = uploads.find(url);
@@ -377,33 +364,29 @@ void Core::NetworkAccess::onUploadFinished()
         if (upl->success) {
             qDebug() << "upload success for" << url;
 
-            storage.addFile(upl->messages, upl->url, upl->path);
-            emit uploadFileComplete(upl->messages, upl->url, upl->path);
-
             // Copy file to Download folder if it is a temp file. See Conversation::onImagePasted.
-            if (upl->path.startsWith(QDir::tempPath() + QStringLiteral("/squawk_img_attach_")) && upl->path.endsWith(".png")) {
+            if (upl->path.startsWith(QDir::tempPath() + QDir::separator() + QStringLiteral("squawk_img_attach_")) && upl->path.endsWith(".png")) {
                 QString err = "";
                 QString downloadDirPath = prepareDirectory(upl->messages.front().jid);
                 if (downloadDirPath.size() > 0) {
-                    QString newPath = downloadDirPath + "/" + upl->path.mid(QDir::tempPath().length() + 1);
+                    QString newPath = downloadDirPath + QDir::separator() + upl->path.mid(QDir::tempPath().length() + 1);
 
                     // Copy {TEMPDIR}/squawk_img_attach_XXXXXX.png to Download folder
-                    bool copyResult = QFile::copy(upl->path, newPath);
-
-                    if (copyResult) {
-                        // Change storage
-                        storage.setPath(upl->url, newPath);
-                    } else {
+                    bool copyResult = QFile::copy(upl->path, Shared::resolvePath(newPath));
+                    if (copyResult)
+                        upl->path = newPath;  // Change storage
+                    else
                         err = "copying to " + newPath + " failed";
-                    }
                 } else {
                     err = "Couldn't prepare a directory for file";
                 }
 
-                if (err.size() != 0) {
+                if (err.size() != 0)
                     qDebug() << "failed to copy temporary upload file " << upl->path << " to download folder:" << err;
             }
-            }
+
+            storage.addFile(upl->messages, upl->url, upl->path);
+            emit uploadFileComplete(upl->messages, upl->url, upl->path);
         }
         
         upl->reply->deleteLater();
@@ -414,8 +397,7 @@ void Core::NetworkAccess::onUploadFinished()
     }
 }
 
-void Core::NetworkAccess::onUploadProgress(qint64 bytesReceived, qint64 bytesTotal)
-{
+void Core::NetworkAccess::onUploadProgress(qint64 bytesReceived, qint64 bytesTotal) {
     QNetworkReply* rpl = static_cast<QNetworkReply*>(sender());
     QString url = rpl->url().toString();
     std::map<QString, Transfer*>::const_iterator itr = uploads.find(url);
@@ -433,14 +415,13 @@ void Core::NetworkAccess::onUploadProgress(qint64 bytesReceived, qint64 bytesTot
     }
 }
 
-QString Core::NetworkAccess::getFileRemoteUrl(const QString& path)
-{
-    QString p;
+QString Core::NetworkAccess::getFileRemoteUrl(const QString& path) {
+    QString p = Shared::squawkifyPath(path);
     
     try {
-        p = storage.getUrl(path);
-    } catch (const Archive::NotFound& err) {
-        
+        p = storage.getUrl(p);
+    } catch (const LMDBAL::NotFound& err) {
+        p = "";
     } catch (...) {
         throw;
     }
@@ -448,8 +429,13 @@ QString Core::NetworkAccess::getFileRemoteUrl(const QString& path)
     return p;
 }
 
-void Core::NetworkAccess::uploadFile(const Shared::MessageInfo& info, const QString& path, const QUrl& put, const QUrl& get, const QMap<QString, QString> headers)
-{
+void Core::NetworkAccess::uploadFile(
+    const Shared::MessageInfo& info,
+    const QString& path,
+    const QUrl& put,
+    const QUrl& get,
+    const QMap<QString, QString> headers
+) {
     QFile* file = new QFile(path);
     Transfer* upl = new Transfer({{info}, 0, 0, true, path, get.toString(), file});
     QNetworkRequest req(put);
@@ -476,22 +462,18 @@ void Core::NetworkAccess::uploadFile(const Shared::MessageInfo& info, const QStr
     }
 }
 
-void Core::NetworkAccess::registerFile(const QString& url, const QString& account, const QString& jid, const QString& id)
-{
+void Core::NetworkAccess::registerFile(const QString& url, const QString& account, const QString& jid, const QString& id) {
     storage.addFile(url, account, jid, id);
     std::map<QString, Transfer*>::iterator itr = downloads.find(url);
-    if (itr != downloads.end()) {
+    if (itr != downloads.end())
         itr->second->messages.emplace_back(account, jid, id);   //TODO notification is going to happen the next tick, is that okay?
 }
-}
 
-void Core::NetworkAccess::registerFile(const QString& url, const QString& path, const QString& account, const QString& jid, const QString& id)
-{
+void Core::NetworkAccess::registerFile(const QString& url, const QString& path, const QString& account, const QString& jid, const QString& id) {
     storage.addFile(url, path, account, jid, id);
 }
 
-bool Core::NetworkAccess::checkAndAddToUploading(const QString& acc, const QString& jid, const QString id, const QString path)
-{
+bool Core::NetworkAccess::checkAndAddToUploading(const QString& acc, const QString& jid, const QString id, const QString path) {
     for (const std::pair<const QString, Transfer*>& pair : uploads) {
         Transfer* info = pair.second;
         if (pair.second->path == path) {
@@ -513,53 +495,68 @@ bool Core::NetworkAccess::checkAndAddToUploading(const QString& acc, const QStri
     return false;
 }
 
-QString Core::NetworkAccess::prepareDirectory(const QString& jid)
-{
-    QString path = QStandardPaths::writableLocation(QStandardPaths::DownloadLocation);
-    path += "/" + QApplication::applicationName();
+QString Core::NetworkAccess::prepareDirectory(const QString& jid) {
+    QString path = currentPath;
+    QString addition;
     if (jid.size() > 0) {
-        path += "/" + jid;
+        addition = jid;
+        path += QDir::separator() + jid;
     }
+
     QDir location(path);
     
     if (!location.exists()) {
         bool res = location.mkpath(path);
-        if (!res) {
+        if (!res)
             return "";
-        } else {
-            return path;
+        else
+            return "squawk://" + addition;
     }
-    }
-    return path;
+    return "squawk://" + addition;
 }
 
-QString Core::NetworkAccess::checkFileName(const QString& name, const QString& path)
-{
+QString Core::NetworkAccess::checkFileName(const QString& name, const QString& path) {
     QStringList parts = name.split(".");
     QString suffix("");
     QStringList::const_iterator sItr = parts.begin();
     QString realName = *sItr;
     ++sItr;
-    for (QStringList::const_iterator sEnd = parts.end(); sItr != sEnd; ++sItr) {
+    for (QStringList::const_iterator sEnd = parts.end(); sItr != sEnd; ++sItr)
         suffix += "." + (*sItr);
-    }
+
     QString postfix("");
-    QFileInfo proposedName(path + "/" + realName + suffix);
+    QString resolvedPath = Shared::resolvePath(path);
+    QString count("");
+    QFileInfo proposedName(resolvedPath + QDir::separator() + realName + count + suffix);
+
     int counter = 0;
     while (proposedName.exists()) {
-        QString count = QString("(") + std::to_string(++counter).c_str() + ")";
-        proposedName = QFileInfo(path + "/" + realName + count + suffix);
+        count = QString("(") + std::to_string(++counter).c_str() + ")";
+        proposedName = QFileInfo(resolvedPath + QDir::separator() + realName + count + suffix);
     }
 
-    return proposedName.absoluteFilePath();
+    return path + QDir::separator() + realName + count + suffix;
 }
 
-QString Core::NetworkAccess::addMessageAndCheckForPath(const QString& url, const QString& account, const QString& jid, const QString& id)
-{
+QString Core::NetworkAccess::addMessageAndCheckForPath(const QString& url, const QString& account, const QString& jid, const QString& id) {
     return storage.addMessageAndCheckForPath(url, account, jid, id);
 }
 
-std::list<Shared::MessageInfo> Core::NetworkAccess::reportPathInvalid(const QString& path)
-{
+std::list<Shared::MessageInfo> Core::NetworkAccess::reportPathInvalid(const QString& path) {
     return storage.deletedFile(path);
 }
+
+void Core::NetworkAccess::moveFilesDirectory(const QString& newPath) {
+    QDir dir(currentPath);
+    bool success = true;
+    qDebug() << "moving" << currentPath << "to" << newPath;
+    for (QFileInfo fileInfo : dir.entryList(QDir::Files | QDir::Dirs | QDir::NoDotAndDotDot | QDir::Hidden | QDir::System)) {
+        QString fileName = fileInfo.fileName();
+        success = dir.rename(fileName, newPath + QDir::separator() + fileName) && success;
+    }
+
+    if (!success)
+        qDebug() << "couldn't move downloads directory, most probably downloads will be broken";
+
+    currentPath = newPath;
+}

core/components/networkaccess.h

@@ -16,8 +16,7 @@
  * along with this program.  If not, see <http://www.gnu.org/licenses/>.
  */
 
-#ifndef CORE_NETWORKACCESS_H
-#define CORE_NETWORKACCESS_H
+#pragma once
 
 #include <QObject>
 #include <QNetworkAccessManager>
@@ -26,20 +25,17 @@
 #include <QFileInfo>
 #include <QFile>
 #include <QStandardPaths>
+#include <QSettings>
 
 #include <set>
 
+#include <shared/pathcheck.h>
 #include "urlstorage.h"
 
 namespace Core {
 
-/**
- * @todo write docs
- */
-
 //TODO Need to describe how to get rid of records when file is no longer reachable;
-class NetworkAccess : public QObject
-{
+class NetworkAccess : public QObject {
     Q_OBJECT
     struct Transfer;
 public:
@@ -65,6 +61,7 @@ public slots:
     void downladFile(const QString& url);
     void registerFile(const QString& url, const QString& account, const QString& jid, const QString& id);
     void registerFile(const QString& url, const QString& path, const QString& account, const QString& jid, const QString& id);
+    void moveFilesDirectory(const QString& newPath);
     
 private:
     void startDownload(const std::list<Shared::MessageInfo>& msgs, const QString& url);
@@ -87,6 +84,7 @@ private:
     UrlStorage storage;
     std::map<QString, Transfer*> downloads;
     std::map<QString, Transfer*> uploads;
+    QString currentPath;
     
     struct Transfer {
         std::list<Shared::MessageInfo> messages;
@@ -100,5 +98,3 @@ private:
 };
 
 }
-
-#endif // CORE_NETWORKACCESS_H

core/components/urlstorage.cpp

@@ -0,0 +1,252 @@
+/*
+ * Squawk messenger. 
+ * Copyright (C) 2019 Yury Gubich <blue@macaw.me>
+ * 
+ * This program is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation, either version 3 of the License, or
+ * (at your option) any later version.
+ * 
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ * 
+ * You should have received a copy of the GNU General Public License
+ * along with this program.  If not, see <http://www.gnu.org/licenses/>.
+ */
+
+#include <QStandardPaths>
+#include <QDir>
+#include <QDebug>
+
+#include "urlstorage.h"
+
+Core::UrlStorage::UrlStorage(const QString& p_name):
+    base(p_name),
+    urlToInfo(base.addStorage<QString, UrlInfo>("urlToInfo")),
+    pathToUrl(base.addStorage<QString, QString>("pathToUrl"))
+{}
+
+Core::UrlStorage::~UrlStorage() {
+    close();
+}
+
+void Core::UrlStorage::open() {
+    base.open();
+}
+
+void Core::UrlStorage::close() {
+    base.close();
+}
+
+void Core::UrlStorage::writeInfo(const QString& key, const Core::UrlStorage::UrlInfo& info, bool overwrite) {
+    LMDBAL::WriteTransaction txn = base.beginTransaction();
+    writeInfo(key, info, txn, overwrite);
+    txn.commit();
+}
+
+void Core::UrlStorage::writeInfo(const QString& key, const Core::UrlStorage::UrlInfo& info, const LMDBAL::WriteTransaction& txn, bool overwrite) {
+    if (overwrite)
+        urlToInfo->forceRecord(key, info, txn);
+    else
+        urlToInfo->addRecord(key, info, txn);
+    
+    if (info.hasPath())
+        pathToUrl->forceRecord(info.getPath(), key, txn);
+}
+
+void Core::UrlStorage::addFile(const QString& url) {
+    addToInfo(url, "", "", "");
+}
+
+void Core::UrlStorage::addFile(const QString& url, const QString& path) {
+    addToInfo(url, "", "", "", path);
+}
+
+void Core::UrlStorage::addFile(const QString& url, const QString& account, const QString& jid, const QString& id) {
+    addToInfo(url, account, jid, id);
+}
+
+void Core::UrlStorage::addFile(const QString& url, const QString& path, const QString& account, const QString& jid, const QString& id) {
+    addToInfo(url, account, jid, id, path);
+}
+
+void Core::UrlStorage::addFile(const std::list<Shared::MessageInfo>& msgs, const QString& url, const QString& path) {
+    UrlInfo info (path, msgs);
+    writeInfo(url, info, true);
+}
+
+QString Core::UrlStorage::addMessageAndCheckForPath(const QString& url, const QString& account, const QString& jid, const QString& id){
+    return addToInfo(url, account, jid, id).getPath();
+}
+
+Core::UrlStorage::UrlInfo Core::UrlStorage::addToInfo(
+    const QString& url,
+    const QString& account,
+    const QString& jid,
+    const QString& id,
+    const QString& path
+) {
+    UrlInfo info;
+    LMDBAL::WriteTransaction txn = base.beginTransaction();
+    
+    try {
+        urlToInfo->getRecord(url, info, txn);
+    } catch (const LMDBAL::NotFound& e) {}
+    
+    bool pathChange = false;
+    bool listChange = false;
+    if (path != "-s") {
+        if (info.getPath() != path) {
+            info.setPath(path);
+            pathChange = true;
+        }
+    }
+    
+    if (account.size() > 0 && jid.size() > 0 && id.size() > 0)
+        listChange = info.addMessage(account, jid, id);
+
+    if (pathChange || listChange) {
+        writeInfo(url, info, txn, true);
+        txn.commit();
+    }
+    
+    return info;
+}
+
+std::list<Shared::MessageInfo> Core::UrlStorage::setPath(const QString& url, const QString& path) {
+    std::list<Shared::MessageInfo> list;
+    LMDBAL::WriteTransaction txn = base.beginTransaction();
+    UrlInfo info;
+    
+    try {
+        urlToInfo->getRecord(url, info, txn);
+        info.getMessages(list);
+    } catch (const LMDBAL::NotFound& e) {}
+    
+    info.setPath(path);
+    writeInfo(url, info, txn, true);
+    txn.commit();
+    
+    return list;
+}
+
+std::list<Shared::MessageInfo> Core::UrlStorage::removeFile(const QString& url) {
+    std::list<Shared::MessageInfo> list;
+    LMDBAL::WriteTransaction txn = base.beginTransaction();
+    UrlInfo info;
+    
+    urlToInfo->getRecord(url, info, txn);
+    urlToInfo->removeRecord(url, txn);
+    info.getMessages(list);
+
+    if (info.hasPath())
+        pathToUrl->removeRecord(info.getPath(), txn);
+
+    txn.commit();
+    
+    return list;
+}
+
+std::list<Shared::MessageInfo> Core::UrlStorage::deletedFile(const QString& path) {
+    std::list<Shared::MessageInfo> list;
+    LMDBAL::WriteTransaction txn = base.beginTransaction();
+    
+    QString url = pathToUrl->getRecord(path, txn);
+    pathToUrl->removeRecord(path, txn);
+
+    UrlInfo info = urlToInfo->getRecord(url, txn);
+    info.getMessages(list);
+    info.setPath(QString());
+    urlToInfo->changeRecord(url, info, txn);
+
+    txn.commit();
+    
+    return list;
+}
+
+QString Core::UrlStorage::getUrl(const QString& path) {
+    return pathToUrl->getRecord(path);
+}
+
+std::pair<QString, std::list<Shared::MessageInfo>> Core::UrlStorage::getPath(const QString& url) {
+    UrlInfo info = urlToInfo->getRecord(url);
+    std::list<Shared::MessageInfo> container;
+    info.getMessages(container);
+    return std::make_pair(info.getPath(), container);
+}
+
+Core::UrlStorage::UrlInfo::UrlInfo():
+    localPath(),
+    messages() {}
+
+Core::UrlStorage::UrlInfo::UrlInfo(const QString& path):
+    localPath(path),
+    messages() {}
+ 
+Core::UrlStorage::UrlInfo::UrlInfo(const QString& path, const std::list<Shared::MessageInfo>& msgs):
+    localPath(path),
+    messages(msgs) {}
+ 
+Core::UrlStorage::UrlInfo::~UrlInfo() {}
+ 
+bool Core::UrlStorage::UrlInfo::addMessage(const QString& acc, const QString& jid, const QString& id) {
+    for (const Shared::MessageInfo& info : messages) {
+        if (info.account == acc && info.jid == jid && info.messageId == id)
+            return false;
+    }
+    messages.emplace_back(acc, jid, id);
+    return true;
+}
+
+void Core::UrlStorage::UrlInfo::serialize(QDataStream& data) const {
+    data << localPath;
+    std::list<Shared::MessageInfo>::size_type size = messages.size();
+    data << quint32(size);
+    for (const Shared::MessageInfo& info : messages) {
+        data << info.account;
+        data << info.jid;
+        data << info.messageId;
+    }
+}
+
+QDataStream & operator << (QDataStream& in, const Core::UrlStorage::UrlInfo& info) {
+    info.serialize(in);
+    return in;
+}
+
+QDataStream & operator >> (QDataStream& out, Core::UrlStorage::UrlInfo& info) {
+    info.deserialize(out);
+    return out;
+}
+
+void Core::UrlStorage::UrlInfo::deserialize(QDataStream& data) {
+    data >> localPath;
+    quint32 size;
+    data >> size;
+    for (quint32 i = 0; i < size; ++i) {
+        messages.emplace_back();
+        Shared::MessageInfo& info = messages.back();
+        data >> info.account;
+        data >> info.jid;
+        data >> info.messageId;
+    }
+}
+
+void Core::UrlStorage::UrlInfo::getMessages(std::list<Shared::MessageInfo>& container) const {
+    for (const Shared::MessageInfo& info : messages)
+        container.emplace_back(info);
+}
+
+QString Core::UrlStorage::UrlInfo::getPath() const {
+    return localPath;
+}
+
+bool Core::UrlStorage::UrlInfo::hasPath() const {
+    return localPath.size() > 0;
+}
+
+void Core::UrlStorage::UrlInfo::setPath(const QString& path) {
+    localPath = path;
+}

core/components/urlstorage.h

@@ -16,25 +16,23 @@
  * along with this program.  If not, see <http://www.gnu.org/licenses/>.
  */
 
-#ifndef CORE_URLSTORAGE_H
-#define CORE_URLSTORAGE_H
+#pragma once
 
 #include <QString>
 #include <QDataStream>
-#include <lmdb.h>
+
 #include <list>
 
-#include "archive.h"
+#include <storage.h>
+
 #include <shared/messageinfo.h>
 
 namespace Core {
 
-/**
- * @todo write docs
- */
-class UrlStorage
-{
+class UrlStorage {
+public:
     class UrlInfo;
+
 public:
     UrlStorage(const QString& name);
     ~UrlStorage();
@@ -55,20 +53,16 @@ public:
     std::pair<QString, std::list<Shared::MessageInfo>> getPath(const QString& url);
     
 private:
-    QString name;
-    bool opened;
-    MDB_env* environment;
-    MDB_dbi base;
-    MDB_dbi map;
+    LMDBAL::Base base;
+    LMDBAL::Storage<QString, UrlInfo>* urlToInfo;
+    LMDBAL::Storage<QString, QString>* pathToUrl;
     
 private:
     void writeInfo(const QString& key, const UrlInfo& info, bool overwrite = false);
-    void writeInfo(const QString& key, const UrlInfo& info, MDB_txn* txn, bool overwrite = false);
-    void readInfo(const QString& key, UrlInfo& info);
-    void readInfo(const QString& key, UrlInfo& info, MDB_txn* txn);
+    void writeInfo(const QString& key, const UrlInfo& info, const LMDBAL::WriteTransaction& txn, bool overwrite = false);
     UrlInfo addToInfo(const QString& url, const QString& account, const QString& jid, const QString& id, const QString& path = "-s");
     
-private:
+public:
     class UrlInfo {
     public:
         UrlInfo(const QString& path);
@@ -96,4 +90,5 @@ private:
 
 }
 
-#endif // CORE_URLSTORAGE_H
+QDataStream& operator >> (QDataStream &in, Core::UrlStorage::UrlInfo& info);
+QDataStream& operator << (QDataStream &out, const Core::UrlStorage::UrlInfo& info);

core/conference.cpp

@@ -42,57 +42,48 @@ Core::Conference::Conference(const QString& p_jid, const QString& p_account, boo
     connect(room, &QXmppMucRoom::error, this, &Conference::onRoomError);
     
     room->setNickName(nick);
-    if (autoJoin) {
+    if (autoJoin)
         room->join();
-    }
     
     archive->readAllResourcesAvatars(exParticipants);
 }
 
-Core::Conference::~Conference()
-{
-    if (joined) {
+Core::Conference::~Conference(){
+    if (joined)
         room->leave();
-    }
+
     room->deleteLater();
 }
 
-QString Core::Conference::getNick() const
-{
+QString Core::Conference::getNick() const {
     return nick;
 }
 
-bool Core::Conference::getAutoJoin()
-{
+bool Core::Conference::getAutoJoin() const {
     return autoJoin;
 }
 
-bool Core::Conference::getJoined() const
-{
+bool Core::Conference::getJoined() const {
     return joined;
 }
 
-void Core::Conference::setJoined(bool p_joined)
-{
+void Core::Conference::setJoined(bool p_joined) {
     if (joined != p_joined) {
-        if (p_joined) {
+        if (p_joined)
             room->join();
-        } else {
+        else
             room->leave();
     }
 }
-}
 
-void Core::Conference::setAutoJoin(bool p_autoJoin)
-{
+void Core::Conference::setAutoJoin(bool p_autoJoin) {
     if (autoJoin != p_autoJoin) {
         autoJoin = p_autoJoin;
         emit autoJoinChanged(autoJoin);
     }
 }
 
-void Core::Conference::setNick(const QString& p_nick)
-{
+void Core::Conference::setNick(const QString& p_nick) {
     if (nick != p_nick) {
         if (joined) {
             room->setNickName(p_nick);
@@ -103,105 +94,99 @@ void Core::Conference::setNick(const QString& p_nick)
     }
 }
 
-void Core::Conference::onRoomJoined()
-{
+void Core::Conference::onRoomJoined() {
     joined = true;
     emit joinedChanged(joined);
 }
 
-void Core::Conference::onRoomLeft()
-{
+void Core::Conference::onRoomLeft() {
     joined = false;
     emit joinedChanged(joined);
 }
 
-void Core::Conference::onRoomNameChanged(const QString& p_name)
-{
+void Core::Conference::onRoomNameChanged(const QString& p_name) {
     setName(p_name);
 }
 
-void Core::Conference::onRoomNickNameChanged(const QString& p_nick)
-{
+void Core::Conference::onRoomNickNameChanged(const QString& p_nick) {
     if (p_nick != nick) {
         nick = p_nick;
         emit nickChanged(nick);
     }
 }
 
-void Core::Conference::onRoomError(const QXmppStanza::Error& err)
-{
+void Core::Conference::onRoomError(const QXmppStanza::Error& err) {
     qDebug() << "MUC" << jid << "error:" << err.text();
 }
 
-void Core::Conference::onRoomParticipantAdded(const QString& p_name)
-{
+void Core::Conference::onRoomParticipantAdded(const QString& p_name) {
     QStringList comps = p_name.split("/");
     QString resource = comps.back();
     QXmppPresence pres = room->participantPresence(p_name);
     QXmppMucItem mi = pres.mucItem();
-    if (resource == jid) {
+    if (resource == jid)
         resource = "";
-    } 
     
     std::map<QString, Archive::AvatarInfo>::const_iterator itr = exParticipants.find(resource);
     bool hasAvatar = itr != exParticipants.end();
     
     if (resource.size() > 0) {
         QDateTime lastInteraction = pres.lastUserInteraction();
-        if (!lastInteraction.isValid()) {
+        if (!lastInteraction.isValid())
             lastInteraction = QDateTime::currentDateTimeUtc();
-        }
         
         QMap<QString, QVariant> cData = {
             {"lastActivity", lastInteraction},
             {"availability", pres.availableStatusType()},
             {"status", pres.statusText()},
             {"affiliation", mi.affiliation()},
-            {"role", mi.role()}
+            {"role", mi.role()},
+            {"client", QVariant::fromValue(
+                Shared::ClientId(
+                    pres.capabilityNode(),
+                    pres.capabilityVer().toBase64(),
+                    pres.capabilityHash())
+                )
+            }
         };
-        
-        if (hasAvatar) {
-            if (itr->second.autogenerated) {
-                cData.insert("avatarState", static_cast<uint>(Shared::Avatar::valid));
-            } else {
-                cData.insert("avatarState", static_cast<uint>(Shared::Avatar::autocreated));
-            }
-            cData.insert("avatarPath", avatarPath(resource) + "." + itr->second.type);
-        } else {
-            cData.insert("avatarState", static_cast<uint>(Shared::Avatar::empty));
-            cData.insert("avatarPath", "");
-            requestVCard(p_name);
-        }
+        careAboutAvatar(hasAvatar, itr->second, cData, resource, p_name);
         
         emit addParticipant(resource, cData);
+
+        if (!hasAvatar) //  because this way vCard is already requested, no need to handle possible avatar update
+            return;
+    }
+    handlePossibleAvatarUpdate(pres, resource, hasAvatar, itr->second);
 }
 
+void Core::Conference::handlePossibleAvatarUpdate (
+    const QXmppPresence& pres,
+    const QString& resource,
+    bool hasAvatar,
+    const Archive::AvatarInfo& info
+) {
     switch (pres.vCardUpdateType()) {
         case QXmppPresence::VCardUpdateNone:            //this presence has nothing to do with photo
             break;
         case QXmppPresence::VCardUpdateNotReady:        //let's say the photo didn't change here
             break;
-        case QXmppPresence::VCardUpdateNoPhoto: {       //there is no photo, need to drop if any
-            if (!hasAvatar || !itr->second.autogenerated) {
+        case QXmppPresence::VCardUpdateNoPhoto:         //there is no photo, need to drop if any
+            if (!hasAvatar || !info.autogenerated)
                 setAutoGeneratedAvatar(resource);
-            }
-        }         
+
             break;
-        case QXmppPresence::VCardUpdateValidPhoto:{     //there is a photo, need to load
+        case QXmppPresence::VCardUpdateValidPhoto:      //there is a photo, need to load
             if (hasAvatar) {
-                if (itr->second.autogenerated || itr->second.hash != pres.photoHash()) {
-                    emit requestVCard(p_name);
-                }
+                if (info.autogenerated || info.hash != pres.photoHash())
+                    emit requestVCard(pres.from());
             } else {
-                emit requestVCard(p_name);
+                emit requestVCard(pres.from());
             }
             break;
     }
 }
-}
 
-void Core::Conference::onRoomParticipantChanged(const QString& p_name)
-{
+void Core::Conference::onRoomParticipantChanged(const QString& p_name) {
     QStringList comps = p_name.split("/");
     QString resource = comps.back();
     QXmppPresence pres = room->participantPresence(p_name);
@@ -209,22 +194,27 @@ void Core::Conference::onRoomParticipantChanged(const QString& p_name)
     handlePresence(pres);
     if (resource != jid) {
         QDateTime lastInteraction = pres.lastUserInteraction();
-        if (!lastInteraction.isValid()) {
+        if (!lastInteraction.isValid())
             lastInteraction = QDateTime::currentDateTimeUtc();
-        }
         
         emit changeParticipant(resource, {
             {"lastActivity", lastInteraction},
             {"availability", pres.availableStatusType()},
             {"status", pres.statusText()},
             {"affiliation", mi.affiliation()},
-            {"role", mi.role()}
+            {"role", mi.role()},
+            {"client", QVariant::fromValue(
+                Shared::ClientId(
+                    pres.capabilityNode(),
+                    pres.capabilityVer().toBase64(),
+                    pres.capabilityHash())
+                )
+            }
         });
     }
 }
 
-void Core::Conference::onRoomParticipantRemoved(const QString& p_name)
-{
+void Core::Conference::onRoomParticipantRemoved(const QString& p_name) {
     QStringList comps = p_name.split("/");
     QString resource = comps.back();
     if (resource == jid) {
@@ -234,69 +224,40 @@ void Core::Conference::onRoomParticipantRemoved(const QString& p_name)
     }
 }
 
-QString Core::Conference::getSubject() const
-{
-    if (joined) {
+QString Core::Conference::getSubject() const {
+    if (joined)
         return room->subject();
-    } else {
+    else
         return "";
 }
-}
 
-void Core::Conference::onRoomSubjectChanged(const QString& p_name)
-{
+void Core::Conference::onRoomSubjectChanged(const QString& p_name) {
     emit subjectChanged(p_name);
 }
 
-void Core::Conference::handlePresence(const QXmppPresence& pres)
-{
+void Core::Conference::handlePresence(const QXmppPresence& pres) {
     QString id = pres.from();
     QStringList comps = id.split("/");
     QString jid = comps.front();
     QString resource("");
-    if (comps.size() > 1) {
+    if (comps.size() > 1)
         resource = comps.back();
-    }
 
-    switch (pres.vCardUpdateType()) {
-        case QXmppPresence::VCardUpdateNone:            //this presence has nothing to do with photo
-            break;
-        case QXmppPresence::VCardUpdateNotReady:        //let's say the photo didn't change here
-            break;
-        case QXmppPresence::VCardUpdateNoPhoto: {       //there is no photo, need to drop if any
     Archive::AvatarInfo info;
     bool hasAvatar = readAvatarInfo(info, resource);
-            if (!hasAvatar || !info.autogenerated) {
-                setAutoGeneratedAvatar(resource);
-            }
-        }         
-        break;
-        case QXmppPresence::VCardUpdateValidPhoto:{     //there is a photo, need to load
-            Archive::AvatarInfo info;
-            bool hasAvatar = readAvatarInfo(info, resource);
-            if (hasAvatar) {
-                if (info.autogenerated || info.hash != pres.photoHash()) {
-                    emit requestVCard(id);
-                }
-            } else {
-                emit requestVCard(id);
-            }
-            break;
-        }      
-    }
+    handlePossibleAvatarUpdate(pres, resource, hasAvatar, info);
 }
 
-bool Core::Conference::setAutoGeneratedAvatar(const QString& resource)
-{
+bool Core::Conference::setAutoGeneratedAvatar(const QString& resource) {
     Archive::AvatarInfo newInfo;
     bool result = RosterItem::setAutoGeneratedAvatar(newInfo, resource);
     if (result && resource.size() != 0) {
         std::map<QString, Archive::AvatarInfo>::iterator itr = exParticipants.find(resource);
-        if (itr == exParticipants.end()) {
+        if (itr == exParticipants.end())
             exParticipants.insert(std::make_pair(resource, newInfo));
-        } else {
+        else
             itr->second = newInfo;
-        }
+
         emit changeParticipant(resource, {
             {"avatarState", static_cast<uint>(Shared::Avatar::autocreated)},
             {"avatarPath", avatarPath(resource) + "." + newInfo.type}
@@ -306,17 +267,15 @@ bool Core::Conference::setAutoGeneratedAvatar(const QString& resource)
     return result;
 }
 
-bool Core::Conference::setAvatar(const QByteArray& data, Archive::AvatarInfo& info, const QString& resource)
-{
+bool Core::Conference::setAvatar(const QByteArray& data, Archive::AvatarInfo& info, const QString& resource) {
     bool result = RosterItem::setAvatar(data, info, resource);
     if (result && resource.size() != 0) {
         if (data.size() > 0) {
             std::map<QString, Archive::AvatarInfo>::iterator itr = exParticipants.find(resource);
-            if (itr == exParticipants.end()) {
+            if (itr == exParticipants.end())
                 exParticipants.insert(std::make_pair(resource, info));
-            } else {
+            else
                 itr->second = info;
-            }
             
             emit changeParticipant(resource, {
                 {"avatarState", static_cast<uint>(Shared::Avatar::autocreated)},
@@ -324,9 +283,8 @@ bool Core::Conference::setAvatar(const QByteArray& data, Archive::AvatarInfo& in
             });
         } else {
             std::map<QString, Archive::AvatarInfo>::iterator itr = exParticipants.find(resource);
-            if (itr != exParticipants.end()) {
+            if (itr != exParticipants.end())
                 exParticipants.erase(itr);
-            }
             
             emit changeParticipant(resource, {
                 {"avatarState", static_cast<uint>(Shared::Avatar::empty)},
@@ -339,25 +297,31 @@ bool Core::Conference::setAvatar(const QByteArray& data, Archive::AvatarInfo& in
     return result;
 }
 
-Shared::VCard Core::Conference::handleResponseVCard(const QXmppVCardIq& card, const QString &resource)
-{
-    Shared::VCard result = RosterItem::handleResponseVCard(card, resource);
-    
-    if (resource.size() > 0) {
+void Core::Conference::handleResponseVCard(const QXmppVCardIq& card, const QString &resource, Shared::VCard& out) {
+    RosterItem::handleResponseVCard(card, resource, out);
+    if (resource.size() > 0)
         emit changeParticipant(resource, {
-            {"avatarState", static_cast<uint>(result.getAvatarType())},
-            {"avatarPath", result.getAvatarPath()}
+            {"avatarState", static_cast<uint>(out.getAvatarType())},
+            {"avatarPath", out.getAvatarPath()}
         });
 }
 
+QMap<QString, QVariant> Core::Conference::getAllAvatars() const {
+    QMap<QString, QVariant> result;
+    for (const std::pair<const QString, Archive::AvatarInfo>& pair : exParticipants)
+        result.insert(pair.first, avatarPath(pair.first) + "." + pair.second.type);
+
     return result;
 }
 
-QMap<QString, QVariant> Core::Conference::getAllAvatars() const
-{
-    QMap<QString, QVariant> result;
-    for (const std::pair<QString, Archive::AvatarInfo>& pair : exParticipants) {
-        result.insert(pair.first, avatarPath(pair.first) + "." + pair.second.type);
-    }
-    return result;
+QMap<QString, QVariant> Core::Conference::getInfo() const {
+    QMap<QString, QVariant> data = RosterItem::getInfo();
+
+    data.insert("autoJoin", getAutoJoin());
+    data.insert("joined", getJoined());
+    data.insert("nick", getNick());
+    data.insert("avatars", getAllAvatars());
+
+    return data;
 }
+

core/conference.h

@@ -16,8 +16,7 @@
  * along with this program.  If not, see <http://www.gnu.org/licenses/>.
  */
 
-#ifndef CORE_CONFERENCE_H
-#define CORE_CONFERENCE_H
+#pragma once
 
 #include <QDir>
 
@@ -26,16 +25,11 @@
 #include <set>
 
 #include "rosteritem.h"
-#include "shared/global.h"
+#include <shared/global.h>
+#include <shared/clientid.h>
 
-namespace Core
-{
-
-/**
- * @todo write docs
- */
-class Conference : public RosterItem
-{
+namespace Core {
+class Conference : public RosterItem {
     Q_OBJECT
 public:
     Conference(const QString& p_jid, const QString& p_account, bool p_autoJoin, const QString& p_name, const QString& p_nick, QXmppMucRoom* p_room);
@@ -48,12 +42,13 @@ public:
     bool getJoined() const;
     void setJoined(bool p_joined);
     
-    bool getAutoJoin();
+    bool getAutoJoin() const;
     void setAutoJoin(bool p_autoJoin);
     void handlePresence(const QXmppPresence & pres) override;
     bool setAutoGeneratedAvatar(const QString& resource = "") override;
-    Shared::VCard handleResponseVCard(const QXmppVCardIq & card, const QString &resource) override;
+    void handleResponseVCard(const QXmppVCardIq & card, const QString &resource, Shared::VCard& out) override;
     QMap<QString, QVariant> getAllAvatars() const;
+    QMap<QString, QVariant> getInfo() const override;
     
 signals:
     void nickChanged(const QString& nick);
@@ -67,6 +62,14 @@ signals:
 protected:
     bool setAvatar(const QByteArray &data, Archive::AvatarInfo& info, const QString &resource = "") override;
     
+private:
+    void handlePossibleAvatarUpdate(
+        const QXmppPresence& pres,
+        const QString& resource,
+        bool hasAvatar,
+        const Archive::AvatarInfo& info
+    );
+
 private:
     QString nick;
     QXmppMucRoom* room;
@@ -89,5 +92,3 @@ private slots:
 };
 
 }
-
-#endif // CORE_CONFERENCE_H

core/contact.cpp

@@ -22,55 +22,49 @@
 Core::Contact::Contact(const QString& pJid, const QString& account, QObject* parent):
     RosterItem(pJid, account, parent),
     groups(),
-    subscriptionState(Shared::SubscriptionState::unknown)
-{
-}
+    subscriptionState(Shared::SubscriptionState::unknown),
+    pep(Shared::Support::unknown)
 
-Core::Contact::~Contact()
-{
-}
+#ifdef WITH_OMEMO
+    ,omemoBundles(Shared::Possible::unknown)
+#endif
+{}
 
-QSet<QString> Core::Contact::getGroups() const
-{
+Core::Contact::~Contact() {}
+
+QSet<QString> Core::Contact::getGroups() const {
     return groups;
 }
 
-unsigned int Core::Contact::groupsCount() const
-{
+unsigned int Core::Contact::groupsCount() const {
     return groups.size();
 }
 
-void Core::Contact::setGroups(const QSet<QString>& set)
-{
+void Core::Contact::setGroups(const QSet<QString>& set) {
     QSet<QString> toRemove = groups - set;
     QSet<QString> toAdd = set - groups;
     
     groups = set;
     
-    for (QSet<QString>::iterator itr = toRemove.begin(), end = toRemove.end(); itr != end; ++itr) {
-        emit groupRemoved(*itr);
+    for (const QString& group : toRemove)
+        emit groupRemoved(group);
+    
+    for (const QString& group : toAdd)
+        emit groupAdded(group);
 }
 
-    for (QSet<QString>::iterator itr = toAdd.begin(), end = toAdd.end(); itr != end; ++itr) {
-        emit groupAdded(*itr);
-    }
-}
-
-Shared::SubscriptionState Core::Contact::getSubscriptionState() const
-{
+Shared::SubscriptionState Core::Contact::getSubscriptionState() const {
     return subscriptionState;
 }
 
-void Core::Contact::setSubscriptionState(Shared::SubscriptionState state)
-{
+void Core::Contact::setSubscriptionState(Shared::SubscriptionState state) {
     if (subscriptionState != state) {
         subscriptionState = state;
         emit subscriptionStateChanged(subscriptionState);
     }
 }
 
-void Core::Contact::handlePresence(const QXmppPresence& pres)
-{
+void Core::Contact::handlePresence(const QXmppPresence& pres) {
     switch (pres.vCardUpdateType()) {
         case QXmppPresence::VCardUpdateNone:            //this presence has nothing to do with photo
             break;
@@ -79,18 +73,17 @@ void Core::Contact::handlePresence(const QXmppPresence& pres)
         case QXmppPresence::VCardUpdateNoPhoto: {       //there is no photo, need to drop if any
             Archive::AvatarInfo info;
             bool hasAvatar = readAvatarInfo(info);
-            if (!hasAvatar || !info.autogenerated) {
+            if (!hasAvatar || !info.autogenerated)
                 setAutoGeneratedAvatar();
-            }
+
         }         
         break;
         case QXmppPresence::VCardUpdateValidPhoto:{     //there is a photo, need to load
             Archive::AvatarInfo info;
             bool hasAvatar = readAvatarInfo(info);
             if (hasAvatar) {
-                if (info.autogenerated || info.hash != pres.photoHash()) {
+                if (info.autogenerated || info.hash != pres.photoHash())
                     emit requestVCard(jid);
-                }
             } else {
                 emit requestVCard(jid);
             }
@@ -98,3 +91,23 @@ void Core::Contact::handlePresence(const QXmppPresence& pres)
         }      
     }
 }
+
+void Core::Contact::setPepSupport(Shared::Support support) {
+    if (pep != support)
+        pep = support;
+}
+
+Shared::Support Core::Contact::getPepSupport() const {
+    return pep;
+}
+
+QMap<QString, QVariant> Core::Contact::getInfo() const {
+    QMap<QString, QVariant> data = RosterItem::getInfo();
+
+    data.insert("state", QVariant::fromValue(subscriptionState));
+
+    return data;
+}
+
+
+

core/contact.h

@@ -16,17 +16,18 @@
  * along with this program.  If not, see <http://www.gnu.org/licenses/>.
  */
 
-#ifndef CORE_CONTACT_H
-#define CORE_CONTACT_H
+#pragma once
 
 #include <QObject>
 #include <QSet>
+
 #include "rosteritem.h"
 
+#include <shared/enums.h>
+
 namespace Core {
 
-class Contact : public RosterItem
-{
+class Contact : public RosterItem {
     Q_OBJECT
 public:
     Contact(const QString& pJid, const QString& account, QObject* parent = 0);
@@ -38,7 +39,11 @@ public:
     
     void setSubscriptionState(Shared::SubscriptionState state);
     Shared::SubscriptionState getSubscriptionState() const;
+    void setPepSupport(Shared::Support support);
+    Shared::Support getPepSupport() const;
+
     void handlePresence(const QXmppPresence & pres) override;
+    QMap<QString, QVariant> getInfo() const override;
 
 signals:
     void groupAdded(const QString& name);
@@ -48,7 +53,11 @@ signals:
 private:
     QSet<QString> groups;
     Shared::SubscriptionState subscriptionState;
+    Shared::Support pep;
+
+#ifdef WITH_OMEMO
+public:
+    Shared::Possible omemoBundles;
+#endif
 };
 }
-
-#endif // CORE_CONTACT_H

core/delayManager/CMakeLists.txt

@@ -0,0 +1,26 @@
+set(SOURCE_FILES
+    manager.cpp
+    job.cpp
+    cardinternal.cpp
+    infoforuser.cpp
+    owncardinternal.cpp
+    owninfoforuser.cpp
+    contact.cpp
+    info.cpp
+)
+
+set(HEADER_FILES
+    manager.h
+    job.h
+    cardinternal.h
+    infoforuser.h
+    owncardinternal.h
+    owninfoforuser.h
+    contact.h
+    info.h
+)
+
+target_sources(squawk PRIVATE
+    ${SOURCE_FILES}
+    ${HEADER_FILES}
+)

core/delayManager/cardinternal.cpp

@@ -0,0 +1,30 @@
+/*
+ * Squawk messenger.
+ * Copyright (C) 2019  Yury Gubich <blue@macaw.me>
+ *
+ * This program is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation, either version 3 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program.  If not, see <http://www.gnu.org/licenses/>.
+ */
+
+#include "cardinternal.h"
+
+Core::DelayManager::CardInternal::CardInternal(Id p_id, const QString& p_jid) :
+    Job(p_id,  Type::cardInternal),
+    Contact(p_id, p_jid, Type::cardInternal)
+{}
+
+
+Core::DelayManager::CardInternal::CardInternal(const CardInternal& other) :
+    Job(other),
+    Contact(other)
+{}

core/delayManager/cardinternal.h

@@ -0,0 +1,35 @@
+/*
+ * Squawk messenger.
+ * Copyright (C) 2019  Yury Gubich <blue@macaw.me>
+ *
+ * This program is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation, either version 3 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program.  If not, see <http://www.gnu.org/licenses/>.
+ */
+
+#pragma once
+
+#include <QString>
+
+#include "contact.h"
+
+namespace Core {
+namespace DelayManager {
+
+class CardInternal : public Contact {
+public:
+    CardInternal(Id id, const QString& jid);
+    CardInternal(const CardInternal& other);
+};
+
+}
+}

core/delayManager/contact.cpp

@@ -0,0 +1,28 @@
+/*
+ * Squawk messenger.
+ * Copyright (C) 2019  Yury Gubich <blue@macaw.me>
+ *
+ * This program is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation, either version 3 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program.  If not, see <http://www.gnu.org/licenses/>.
+ */
+
+#include "contact.h"
+
+Core::DelayManager::Contact::Contact(const Contact& other):
+    Job(other),
+    jid(other.jid) {}
+
+
+Core::DelayManager::Contact::Contact(Id p_id, const QString& p_jid, Type p_type):
+    Job(p_id, p_type),
+    jid(p_jid) {}

core/delayManager/contact.h

@@ -0,0 +1,38 @@
+/*
+ * Squawk messenger.
+ * Copyright (C) 2019  Yury Gubich <blue@macaw.me>
+ *
+ * This program is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation, either version 3 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program.  If not, see <http://www.gnu.org/licenses/>.
+ */
+
+#pragma once
+
+#include <QString>
+
+#include "job.h"
+
+namespace Core {
+namespace DelayManager {
+
+class Contact : public virtual Job {
+protected:
+    Contact(Id id, const QString& jid, Type type);
+    Contact(const Contact& other);
+
+public:
+    const QString jid;
+};
+
+}
+}

core/delayManager/info.cpp

@@ -0,0 +1,61 @@
+/*
+ * Squawk messenger.
+ * Copyright (C) 2019  Yury Gubich <blue@macaw.me>
+ *
+ * This program is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation, either version 3 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program.  If not, see <http://www.gnu.org/licenses/>.
+ */
+
+#include "info.h"
+
+Core::DelayManager::Info::Info(Id p_id, Type p_type) :
+    Job(p_id, p_type),
+    stage(Stage::waitingForVCard),
+    info(nullptr)
+{}
+
+Core::DelayManager::Info::Info(const Info& other) :
+    Job(other),
+    stage(other.stage),
+    info(nullptr)
+{}
+
+Core::DelayManager::Info::~Info() {
+    if (stage == Stage::waitingForBundles) {
+        delete info;
+    }
+}
+
+Core::DelayManager::Info::Stage Core::DelayManager::Info::getStage() const {
+    return stage;
+}
+
+void Core::DelayManager::Info::receivedVCard(const Shared::VCard& card) {
+    if (stage != Stage::waitingForVCard)
+        throw 245;
+
+    info = new Shared::VCard(card);
+
+#ifdef WITH_OMEMO
+    stage = Stage::waitingForBundles;
+#endif
+}
+
+Shared::VCard * Core::DelayManager::Info::claim() {
+    if (stage != Stage::waitingForBundles)
+        throw 246;
+
+    Shared::VCard* res = info;
+    info = nullptr;
+    return res;
+}

core/delayManager/info.h

@@ -0,0 +1,55 @@
+/*
+ * Squawk messenger.
+ * Copyright (C) 2019  Yury Gubich <blue@macaw.me>
+ *
+ * This program is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation, either version 3 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program.  If not, see <http://www.gnu.org/licenses/>.
+ */
+
+#pragma once
+
+#include "job.h"
+
+#include <shared/vcard.h>
+#include <shared/info.h>
+
+namespace Core {
+namespace DelayManager {
+
+class Info : public virtual Job {
+public:
+    enum class Stage {
+        waitingForVCard,
+        waitingForBundles,
+        finished
+    };
+
+protected:
+    Info(Id id, Type type);
+    Info(const Info& other);
+
+public:
+    ~Info();
+
+    void receivedVCard(const Shared::VCard& card);
+    Shared::VCard* claim();
+    Stage getStage() const;
+
+
+private:
+    Stage stage;
+    Shared::VCard* info;
+};
+
+}
+}

core/delayManager/infoforuser.cpp

@@ -0,0 +1,31 @@
+/*
+ * Squawk messenger.
+ * Copyright (C) 2019  Yury Gubich <blue@macaw.me>
+ *
+ * This program is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation, either version 3 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program.  If not, see <http://www.gnu.org/licenses/>.
+ */
+
+#include "infoforuser.h"
+
+Core::DelayManager::InfoForUser::InfoForUser(Id p_id, const QString& p_jid) :
+    Job(p_id, Type::infoForUser),
+    Contact(p_id, p_jid, Type::infoForUser),
+    Info(p_id, Type::infoForUser)
+{}
+
+Core::DelayManager::InfoForUser::InfoForUser(const InfoForUser& other) :
+    Job(other),
+    Contact(other),
+    Info(other)
+{}

core/delayManager/infoforuser.h

@@ -0,0 +1,34 @@
+/*
+ * Squawk messenger.
+ * Copyright (C) 2019  Yury Gubich <blue@macaw.me>
+ *
+ * This program is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation, either version 3 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program.  If not, see <http://www.gnu.org/licenses/>.
+ */
+
+#pragma once
+
+#include "contact.h"
+#include "info.h"
+
+namespace Core {
+namespace DelayManager {
+
+class InfoForUser : public Contact, public Info {
+public:
+    InfoForUser(Id id, const QString& jid);
+    InfoForUser(const InfoForUser& other);
+};
+
+}
+}

core/delayManager/job.cpp

@@ -0,0 +1,30 @@
+/*
+ * Squawk messenger.
+ * Copyright (C) 2019  Yury Gubich <blue@macaw.me>
+ *
+ * This program is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation, either version 3 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program.  If not, see <http://www.gnu.org/licenses/>.
+ */
+
+#include "job.h"
+
+Core::DelayManager::Job::Job(Id p_id, Type p_type) :
+    id (p_id),
+    type (p_type) {}
+
+
+Core::DelayManager::Job::Job(const Job& other) :
+    id(other.id),
+    type(other.type) {}
+
+Core::DelayManager::Job::~Job() {}

core/delayManager/job.h

@@ -0,0 +1,54 @@
+/*
+ * Squawk messenger.
+ * Copyright (C) 2019  Yury Gubich <blue@macaw.me>
+ *
+ * This program is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation, either version 3 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program.  If not, see <http://www.gnu.org/licenses/>.
+ */
+
+#pragma once
+
+#include <stdint.h>
+
+namespace Core {
+namespace DelayManager {
+
+class Job {
+public:
+    typedef uint16_t Id;
+
+    enum class Type {
+        cardInternal,
+        ownCardInternal,
+        infoForUser,
+        ownInfoForUser
+    };
+    inline static constexpr const char * const TypeString[] = {
+        "cardInternal",
+        "ownCardInternal",
+        "infoForUser",
+        "ownInfoForUser"
+    };
+protected:
+    Job(Id id, Type type);
+    Job(const Job& other);
+
+public:
+    virtual ~Job();
+
+    const Id id;
+    const Type type;
+};
+
+}
+}

core/delayManager/manager.cpp

@@ -0,0 +1,439 @@
+/*
+ * Squawk messenger.
+ * Copyright (C) 2019  Yury Gubich <blue@macaw.me>
+ *
+ * This program is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation, either version 3 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program.  If not, see <http://www.gnu.org/licenses/>.
+ */
+
+#include "manager.h"
+
+#include <QDebug>
+
+#include "cardinternal.h"
+#include "infoforuser.h"
+#include "owncardinternal.h"
+#include "owninfoforuser.h"
+
+Core::DelayManager::Manager::Manager(const QString& poj, Job::Id mpj, QObject* parent) :
+    QObject(parent),
+    maxParallelJobs(mpj),
+    nextJobId(1),
+    scheduledJobs(),
+    scheduledJobsById(scheduledJobs.get<id>()),
+    jobSequence(scheduledJobs.get<sequence>()),
+    runningJobs(),
+    ownVCardJobId(0),
+    ownInfoJobId(0),
+    scheduledVCards(),
+    requestedVCards(),
+#ifdef WITH_OMEMO
+    requestedBundles(),
+#endif
+    ownJid(poj)
+{}
+
+Core::DelayManager::Manager::~Manager() {
+    for (const std::pair<const Job::Id, Job*>& pair : runningJobs)
+        delete pair.second;
+
+    for (Job* job : jobSequence)
+        delete job;
+}
+
+Core::DelayManager::Job::Id Core::DelayManager::Manager::getNextJobId() {
+    Job::Id id = nextJobId++;
+    if (id == 0)
+        id = nextJobId++;
+
+    return id;
+}
+
+void Core::DelayManager::Manager::getInfo(const QString& jid) {
+    if (jid == ownJid)
+        return getOwnInfo();
+
+    Job* job = nullptr;
+#ifdef WITH_OMEMO
+    std::map<QString, Job::Id>::const_iterator bitr = requestedBundles.find(jid);
+    if (bitr != requestedBundles.end()) {
+        std::map<Job::Id, Job*>::const_iterator itr = runningJobs.find(bitr->second);
+        if (itr == runningJobs.end())
+            throw JobNotFound(bitr->second);
+
+        job = itr->second;
+    }
+    else
+#endif
+        job = getVCardJob(jid);
+
+    if (job != nullptr) {
+        if (job->type == Job::Type::cardInternal)
+            replaceJob(new InfoForUser(job->id, jid));
+    } else
+        scheduleJob(new InfoForUser(getNextJobId(), jid));
+}
+
+void Core::DelayManager::Manager::getOwnInfo() {
+    if (ownInfoJobId == 0) {
+        if (ownVCardJobId != 0)
+            replaceJob(new OwnInfoForUser(ownVCardJobId));
+        else
+            scheduleJob(new OwnInfoForUser(getNextJobId()));
+    }
+}
+
+void Core::DelayManager::Manager::getVCard(const QString& jid) {
+    Job* job = getVCardJob(jid);
+    if (job == nullptr)
+        scheduleJob(new CardInternal(getNextJobId(), jid));
+}
+
+void Core::DelayManager::Manager::getOwnVCard() {
+    if (ownVCardJobId == 0)
+        scheduleJob(new OwnCardInternal(getNextJobId()));
+}
+
+bool Core::DelayManager::Manager::isOwnVCardPending() const {
+    return ownVCardJobId != 0;
+}
+
+Core::DelayManager::Job* Core::DelayManager::Manager::getVCardJob(const QString& jid) {
+    Job* job = nullptr;
+    std::map<QString, Job::Id>::const_iterator sitr = scheduledVCards.find(jid);
+    if (sitr == scheduledVCards.end()) {
+        std::map<QString, Job::Id>::const_iterator ritr = requestedVCards.find(jid);
+        if (ritr != requestedVCards.end()) {
+            std::map<Job::Id, Job*>::const_iterator itr = runningJobs.find(ritr->second);
+            if (itr == runningJobs.end())
+                throw JobNotFound(ritr->second, "getVCardJob:1");
+
+            job = itr->second;
+        }
+    } else {
+        StorageById::const_iterator itr = scheduledJobsById.find(sitr->second);
+        if (itr == scheduledJobsById.end())
+            throw JobNotFound(sitr->second, "getVCardJob:2");
+
+        job = *itr;
+    }
+
+    return job;
+}
+void Core::DelayManager::Manager::preScheduleJob(Job* job) {
+    switch (job->type) {
+        case Job::Type::cardInternal:
+            scheduledVCards.emplace(dynamic_cast<CardInternal*>(job)->jid, job->id);
+            break;
+        case Job::Type::ownCardInternal:
+            ownVCardJobId = job->id;
+            break;
+        case Job::Type::infoForUser:
+            scheduledVCards.emplace(dynamic_cast<InfoForUser*>(job)->jid, job->id);
+            break;
+        case Job::Type::ownInfoForUser:
+            ownVCardJobId = job->id;
+            ownInfoJobId = job->id;
+            break;
+    }
+}
+
+void Core::DelayManager::Manager::scheduleJob(Job* job) {
+    preScheduleJob(job);
+    if (runningJobs.size() < maxParallelJobs)
+        executeJob(job);
+    else
+        scheduledJobs.push_back(job);
+}
+
+void Core::DelayManager::Manager::preExecuteJob(Job* job) {
+    switch (job->type) {
+        case Job::Type::cardInternal:
+        case Job::Type::infoForUser: {
+            Contact* cij = dynamic_cast<Contact*>(job);
+            requestedVCards.emplace(cij->jid, job->id);
+            scheduledVCards.erase(cij->jid);
+        }
+            break;
+        case Job::Type::ownInfoForUser:
+        case Job::Type::ownCardInternal:
+            break;
+    }
+}
+
+void Core::DelayManager::Manager::executeJob(Job* job) {
+    preExecuteJob(job);
+    runningJobs.emplace(job->id, job);
+    switch (job->type) {
+        case Job::Type::cardInternal:
+        case Job::Type::infoForUser:
+            emit requestVCard(dynamic_cast<Contact*>(job)->jid);
+            break;
+        case Job::Type::ownInfoForUser:
+        case Job::Type::ownCardInternal:
+            emit requestOwnVCard();
+            break;
+    }
+}
+
+void Core::DelayManager::Manager::jobIsDone(Job::Id jobId) {
+    std::map<Job::Id, Job*>::const_iterator itr = runningJobs.find(jobId);
+    if (itr == runningJobs.end())
+        throw JobNotFound(jobId, "jobIsDone");
+
+    Job* job = itr->second;
+    delete job;
+    runningJobs.erase(itr);
+    if (scheduledJobs.size() > 0) {
+        Job* job = scheduledJobs.front();
+        scheduledJobs.pop_front();
+        executeJob(job);
+    }
+}
+
+void Core::DelayManager::Manager::replaceJob(Job* job) {
+    preScheduleJob(job);
+    std::map<Job::Id, Job*>::iterator itr = runningJobs.find(job->id);
+    if (itr != runningJobs.end()) {
+        preExecuteJob(job);
+        delete itr->second;
+        itr->second = job;
+    } else {
+        StorageById::iterator sitr = scheduledJobsById.find(job->id);
+        if (sitr != scheduledJobsById.end()) {
+            delete *(sitr);
+            scheduledJobsById.replace(sitr, job);
+        } else
+            throw JobNotFound(job->id, "replaceJob");
+    }
+}
+
+void Core::DelayManager::Manager::jobIsCanceled(Job* job, bool wasRunning) {
+    switch (job->type) {
+        case Job::Type::cardInternal: {
+            CardInternal* jb = dynamic_cast<CardInternal*>(job);
+            if (wasRunning)
+                requestedVCards.erase(jb->jid);
+            else
+                scheduledVCards.erase(jb->jid);
+
+            emit gotVCard(jb->jid, Shared::VCard());
+        }
+            break;
+        case Job::Type::infoForUser: {
+            InfoForUser* jb = dynamic_cast<InfoForUser*>(job);
+            switch (jb->getStage()) {
+                case InfoForUser::Stage::waitingForVCard:
+                    if (wasRunning)
+                        requestedVCards.erase(jb->jid);
+                    else
+                        scheduledVCards.erase(jb->jid);
+
+                    emit gotVCard(jb->jid, Shared::VCard());
+                    break;
+                case InfoForUser::Stage::waitingForBundles:
+#ifdef WITH_OMEMO
+                    requestedBundles.erase(jb->jid);
+#endif
+                    break;
+                default:
+                    break;
+            }
+            emit gotInfo(Shared::Info(jb->jid));
+        }
+            break;
+        case Job::Type::ownInfoForUser: {
+            OwnInfoForUser* jb = dynamic_cast<OwnInfoForUser*>(job);
+            if (jb->getStage() == OwnInfoForUser::Stage::waitingForVCard) {
+                ownVCardJobId = 0;
+                emit gotOwnVCard(Shared::VCard());
+            }
+            ownInfoJobId = 0;
+            emit gotOwnInfo(Shared::Info (ownJid));
+        }
+
+            break;
+        case Job::Type::ownCardInternal:
+            ownVCardJobId = 0;
+            emit gotOwnVCard(Shared::VCard());
+            break;
+    }
+
+    delete job;
+}
+
+void Core::DelayManager::Manager::disconnected() {
+    for (const std::pair<const Job::Id, Job*> pair : runningJobs)
+        jobIsCanceled(pair.second, true);
+
+    for (Job* job : scheduledJobs)
+        jobIsCanceled(job, false);
+
+    runningJobs.clear();
+    scheduledJobs.clear();
+}
+
+void Core::DelayManager::Manager::receivedVCard(const QString& jid, const Shared::VCard& card) {
+    std::map<QString, Job::Id>::const_iterator cardItr = requestedVCards.find(jid);
+    if (cardItr == requestedVCards.end()) {
+        qDebug() << "received VCard for" << jid << "but it was never requested through manager, ignoring";
+        return;
+    }
+    Job::Id jobId = cardItr->second;
+    requestedVCards.erase(cardItr);
+    std::map<Job::Id, Job*>::const_iterator itr = runningJobs.find(jobId);
+    if (itr == runningJobs.end())
+        throw JobNotFound(jobId, "receivedVCard");
+
+    Job* job = itr->second;
+
+    switch (job->type) {
+        case Job::Type::cardInternal:
+            jobIsDone(jobId);
+            emit gotVCard(jid, card);
+            break;
+        case Job::Type::infoForUser: {
+#ifdef WITH_OMEMO
+            requestedBundles.emplace(jid, jobId);
+            InfoForUser* jb = dynamic_cast<InfoForUser*>(job);
+            jb->receivedVCard(card);
+            emit requestBundles(jid);
+#else
+            Shared::Info info(jid);
+            info.turnIntoContact(card);
+            emit gotInfo(info);
+            jobIsDone(jobId);
+#endif
+            emit gotVCard(jid, card);
+        }
+            break;
+        default:
+            throw UnexpectedJobType(job->type, "receivedVCard");
+    }
+}
+
+void Core::DelayManager::Manager::receivedOwnVCard(const Shared::VCard& card) {
+    if (ownVCardJobId == 0) {
+        qDebug() << "received own VCard for" << ownJid << "but it was never requested through manager, ignoring";
+        return;
+    }
+    Job::Id jobId = ownVCardJobId;
+    ownVCardJobId = 0;
+    std::map<Job::Id, Job*>::const_iterator itr = runningJobs.find(jobId);
+    if (itr == runningJobs.end())
+        throw JobNotFound(jobId, "receivedOwnVCard");
+
+    Job* job = itr->second;
+    switch (job->type) {
+        case Job::Type::ownCardInternal:
+            jobIsDone(jobId);
+            emit gotOwnVCard(card);
+            break;
+        case Job::Type::ownInfoForUser: {
+#ifdef WITH_OMEMO
+            OwnInfoForUser* jb = dynamic_cast<OwnInfoForUser*>(job);
+            jb->receivedVCard(card);
+            emit requestOwnBundles();
+#else
+            Shared::Info info(ownJid);
+            info.turnIntoOwnAccount(card);
+            emit gotOwnInfo(info);
+            jobIsDone(jobId);
+#endif
+            emit gotOwnVCard(card);
+        }
+            break;
+        default:
+            throw UnexpectedJobType(job->type, "receivedVCard");
+    }
+}
+
+#ifdef WITH_OMEMO
+void Core::DelayManager::Manager::receivedBundles(const QString& jid, const std::list<Shared::KeyInfo>& keys) {
+    std::map<QString, Job::Id>::const_iterator itr = requestedBundles.find(jid);
+    if (itr == requestedBundles.end()) {
+        qDebug() << "received bundles for" << jid << "but they were never requested through manager, ignoring";
+        return;
+    }
+
+    Job::Id jobId = itr->second;
+    requestedBundles.erase(itr);
+    std::map<Job::Id, Job*>::const_iterator jitr = runningJobs.find(jobId);
+    if (jitr == runningJobs.end())
+        throw JobNotFound(jobId, "receivedBundles");
+
+    Job* jb = jitr->second;
+    InfoForUser* job = dynamic_cast<InfoForUser*>(jb);
+
+    Shared::Info info(jid);
+    info.turnIntoContact(job->claim(), new std::list<Shared::KeyInfo>(keys));
+    emit gotInfo(info);
+    jobIsDone(jobId);
+}
+
+void Core::DelayManager::Manager::receivedOwnBundles(const std::list<Shared::KeyInfo>& keys) {
+    if (ownInfoJobId == 0) {
+        qDebug() << "received own bundles for" << ownJid << "but they were never requested through manager, ignoring";
+        return;
+    }
+    Job::Id jobId = ownInfoJobId;
+    ownInfoJobId = 0;
+    std::map<Job::Id, Job*>::const_iterator jitr = runningJobs.find(jobId);
+    if (jitr == runningJobs.end())
+        throw JobNotFound(jobId, "receivedOwnBundles");
+
+    Job* jb = jitr->second;
+    OwnInfoForUser* job = dynamic_cast<OwnInfoForUser*>(jb);
+
+    Shared::Info info(ownJid);
+    info.turnIntoOwnAccount(job->claim(), new std::list<Shared::KeyInfo>(keys));
+    emit gotOwnInfo(info);
+    jobIsDone(jobId);
+}
+#endif
+
+void Core::DelayManager::Manager::setOwnJid(const QString& jid) {
+    ownJid = jid;
+}
+
+
+Core::DelayManager::Manager::UnexpectedJobType::UnexpectedJobType(Job::Type p_type, const std::string& p_method):
+    Exception(),
+    type(p_type),
+    method(p_method)
+{}
+
+std::string Core::DelayManager::Manager::UnexpectedJobType::getMessage() const{
+    std::string msg("Unexpected job type: ");
+    msg += Job::TypeString[static_cast<int>(type)];
+    if (method.size() > 0)
+        msg += " in method " + method;
+
+    return msg;
+}
+
+Core::DelayManager::Manager::JobNotFound::JobNotFound(Job::Id p_id, const std::string& p_method) :
+    Exception(),
+    id(p_id),
+    method(p_method)
+{}
+
+std::string Core::DelayManager::Manager::JobNotFound::getMessage() const {
+    std::string msg("Job with id ");
+    msg += std::to_string(id);
+    msg += " was not found";
+    if (method.size() > 0)
+        msg += " in method " + method;
+
+    return msg;
+}

core/delayManager/manager.h

@@ -0,0 +1,153 @@
+/*
+ * Squawk messenger.
+ * Copyright (C) 2019  Yury Gubich <blue@macaw.me>
+ *
+ * This program is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation, either version 3 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program.  If not, see <http://www.gnu.org/licenses/>.
+ */
+#pragma once
+
+#include <list>
+#include <set>
+#include <string>
+
+#include <boost/multi_index_container.hpp>
+#include <boost/multi_index/ordered_index.hpp>
+#include <boost/multi_index/sequenced_index.hpp>
+#include <boost/multi_index/member.hpp>
+
+#include <QObject>
+#include <QString>
+
+#include <shared/vcard.h>
+#include <shared/info.h>
+#include <shared/exception.h>
+
+#include "job.h"
+
+namespace Core {
+namespace DelayManager {
+
+class Manager : public QObject {
+    Q_OBJECT
+public:
+    Manager(const QString& ownJid, Job::Id maxParallelJobs = 5, QObject* parent = nullptr);
+    ~Manager();
+
+    void setOwnJid(const QString& jid);
+    bool isOwnVCardPending() const;
+
+public slots:
+    void getOwnVCard();
+    void getOwnInfo();
+    void getVCard(const QString& jid);
+    void getInfo(const QString& jid);
+
+signals:
+    void requestVCard(const QString& jid);
+    void requestOwnVCard();
+
+#ifdef WITH_OMEMO
+    void requestBundles(const QString& jid);
+    void requestOwnBundles();
+#endif
+
+    void gotVCard(const QString& jid, const Shared::VCard& info);
+    void gotOwnVCard(const Shared::VCard& info);
+    void gotInfo(const Shared::Info& info);
+    void gotOwnInfo(const Shared::Info& info);
+
+public slots:
+    void disconnected();
+    void receivedOwnVCard(const Shared::VCard& card);
+    void receivedVCard(const QString& jid, const Shared::VCard& card);
+
+#ifdef WITH_OMEMO
+    void receivedBundles(const QString& jid, const std::list<Shared::KeyInfo>& keys);
+    void receivedOwnBundles(const std::list<Shared::KeyInfo>& keys);
+#endif
+
+private:
+    void preScheduleJob(Job* job);
+    void scheduleJob(Job* job);
+    void preExecuteJob(Job* job);
+    void executeJob(Job* job);
+    void jobIsCanceled(Job* job, bool wasRunning);
+    void jobIsDone(Job::Id jobId);
+    Job::Id getNextJobId();
+    void replaceJob(Job* job);
+    Job* getVCardJob(const QString& jid);
+
+private:
+    struct id {};
+    struct sequence {};
+
+    typedef boost::multi_index_container<
+        Job*,
+        boost::multi_index::indexed_by<
+            boost::multi_index::sequenced<
+                boost::multi_index::tag<sequence>
+            >,
+            boost::multi_index::ordered_unique<
+                boost::multi_index::tag<id>,
+                boost::multi_index::member<
+                    Job,
+                    const Job::Id,
+                    &Job::id
+                >
+            >
+        >
+    > Storage;
+
+
+    typedef Storage::index<id>::type StorageById;
+    typedef Storage::index<sequence>::type StorageSequence;
+    Job::Id maxParallelJobs;
+    Job::Id nextJobId;
+
+    Storage scheduledJobs;
+    StorageById& scheduledJobsById;
+    StorageSequence& jobSequence;
+    std::map<Job::Id, Job*> runningJobs;
+
+    Job::Id ownVCardJobId;
+    Job::Id ownInfoJobId;
+    std::map<QString, Job::Id> scheduledVCards;
+    std::map<QString, Job::Id> requestedVCards;
+#ifdef WITH_OMEMO
+    std::map<QString, Job::Id> requestedBundles;
+#endif
+    QString ownJid;
+
+public:
+    class UnexpectedJobType: public Utils::Exception {
+    public:
+        UnexpectedJobType(Job::Type p_type, const std::string& p_method = "");
+        std::string getMessage() const override;
+    private:
+        Job::Type type;
+        std::string method;
+    };
+
+    class JobNotFound: public Utils::Exception {
+    public:
+        JobNotFound(Job::Id p_id, const std::string& p_method = "");
+        std::string getMessage() const override;
+    private:
+        Job::Id id;
+        std::string method;
+    };
+};
+
+}
+}

core/delayManager/owncardinternal.cpp

@@ -0,0 +1,32 @@
+/*
+ * Squawk messenger.
+ * Copyright (C) 2019  Yury Gubich <blue@macaw.me>
+ *
+ * This program is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation, either version 3 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program.  If not, see <http://www.gnu.org/licenses/>.
+ */
+
+#include "owncardinternal.h"
+
+Core::DelayManager::OwnCardInternal::OwnCardInternal(Id p_id) :
+    Job(p_id, Type::ownCardInternal)
+{}
+
+Core::DelayManager::OwnCardInternal::OwnCardInternal(Id p_id, Type p_type) :
+    Job(p_id, p_type)
+{}
+
+Core::DelayManager::OwnCardInternal::OwnCardInternal(const OwnCardInternal& other) :
+    Job(other)
+{}
+

core/delayManager/owncardinternal.h

@@ -0,0 +1,36 @@
+/*
+ * Squawk messenger.
+ * Copyright (C) 2019  Yury Gubich <blue@macaw.me>
+ *
+ * This program is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation, either version 3 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program.  If not, see <http://www.gnu.org/licenses/>.
+ */
+
+#pragma once
+
+#include "job.h"
+
+namespace Core {
+namespace DelayManager {
+
+class OwnCardInternal : public Job {
+protected:
+    OwnCardInternal(Id id, Type type);
+
+public:
+    OwnCardInternal(Id id);
+    OwnCardInternal(const OwnCardInternal& other);
+};
+
+}
+}

core/delayManager/owninfoforuser.cpp

@@ -0,0 +1,29 @@
+/*
+ * Squawk messenger.
+ * Copyright (C) 2019  Yury Gubich <blue@macaw.me>
+ *
+ * This program is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation, either version 3 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program.  If not, see <http://www.gnu.org/licenses/>.
+ */
+
+#include "owninfoforuser.h"
+
+Core::DelayManager::OwnInfoForUser::OwnInfoForUser(Id p_id) :
+    Job(p_id, Type::ownInfoForUser),
+    Info(p_id, Type::ownInfoForUser)
+{}
+
+Core::DelayManager::OwnInfoForUser::OwnInfoForUser(const OwnInfoForUser& other) :
+    Job(other),
+    Info(other)
+{}

core/delayManager/owninfoforuser.h

@@ -0,0 +1,34 @@
+/*
+ * Squawk messenger.
+ * Copyright (C) 2019  Yury Gubich <blue@macaw.me>
+ *
+ * This program is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation, either version 3 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program.  If not, see <http://www.gnu.org/licenses/>.
+ */
+
+#pragma once
+
+#include "contact.h"
+#include "info.h"
+
+namespace Core {
+namespace DelayManager {
+
+class OwnInfoForUser : public Info {
+public:
+    OwnInfoForUser(Id id);
+    OwnInfoForUser(const OwnInfoForUser& other);
+};
+
+}
+}

core/handlers/CMakeLists.txt

@@ -1,6 +1,22 @@
-target_sources(squawk PRIVATE
+set(SOURCE_FILES
   messagehandler.cpp
-  messagehandler.h
   rosterhandler.cpp
-  rosterhandler.h
+  vcardhandler.cpp
+  discoveryhandler.cpp
+  trusthandler.cpp
 )
+
+set(HEADER_FILES
+  messagehandler.h
+  rosterhandler.h
+  vcardhandler.h
+  discoveryhandler.h
+  trusthandler.h
+)
+
+if(WITH_OMEMO)
+  list(APPEND SOURCE_FILES omemohandler.cpp)
+  list(APPEND HEADER_FILES omemohandler.h)
+endif()
+
+target_sources(squawk PRIVATE ${SOURCE_FILES})

core/handlers/discoveryhandler.cpp

@@ -0,0 +1,155 @@
+// Squawk messenger. 
+// Copyright (C) 2019  Yury Gubich <blue@macaw.me>
+// 
+// This program is free software: you can redistribute it and/or modify
+// it under the terms of the GNU General Public License as published by
+// the Free Software Foundation, either version 3 of the License, or
+// (at your option) any later version.
+// 
+// This program is distributed in the hope that it will be useful,
+// but WITHOUT ANY WARRANTY; without even the implied warranty of
+// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+// GNU General Public License for more details.
+// 
+// You should have received a copy of the GNU General Public License
+// along with this program.  If not, see <http://www.gnu.org/licenses/>.
+
+#include "discoveryhandler.h"
+#include "core/account.h"
+
+#include <QDebug>
+
+Core::DiscoveryHandler::DiscoveryHandler(Core::Account* account):
+    QObject(),
+    acc(account),
+    omemoToCarbonsConnected (false) {}
+
+Core::DiscoveryHandler::~DiscoveryHandler() {}
+
+void Core::DiscoveryHandler::initialize()
+{
+    QObject::connect(acc->dm, &QXmppDiscoveryManager::itemsReceived, this, &DiscoveryHandler::onItemsReceived);
+    QObject::connect(acc->dm, &QXmppDiscoveryManager::infoReceived, this, &DiscoveryHandler::onInfoReceived);
+
+    acc->dm->setClientType("pc");
+    acc->dm->setClientCategory("client");
+    acc->dm->setClientName(qApp->applicationDisplayName() + " " + qApp->applicationVersion());
+    acc->dm->setClientCapabilitiesNode("https://git.macaw.me/blue/squawk");
+}
+
+void Core::DiscoveryHandler::onItemsReceived(const QXmppDiscoveryIq& items)
+{
+    QString server = acc->getServer();
+    if (items.from() == server) {
+        std::set<QString> needToRequest;
+        qDebug() << "Server items list received for account " << acc->getName() << ":";
+        for (QXmppDiscoveryIq::Item item : items.items()) {
+            QString jid = item.jid();
+            if (jid != server) {
+                qDebug() << "     Node" << jid;
+                needToRequest.insert(jid);
+            } else {
+                qDebug() << "    " << item.node().toStdString().c_str();
+            }
+        }
+
+        for (const QString& jid : needToRequest) {
+            acc->dm->requestInfo(jid);
+        }
+    }
+}
+
+void Core::DiscoveryHandler::onInfoReceived(const QXmppDiscoveryIq& info)
+{
+    QString from = info.from();
+    QString server = acc->getServer();
+    QString accName = acc->getName();
+    QString bareJid = acc->getBareJid();
+    if (from == server) {
+        bool enableCC = false;
+        qDebug() << "Server info received for account" << accName;
+        QStringList features = info.features();
+        qDebug() << "List of supported features of the server " << server << ":";
+        for (const QString& feature : features) {
+            qDebug() << "    " << feature.toStdString().c_str();
+            if (feature == "urn:xmpp:carbons:2") {
+                enableCC = true;
+            }
+        }
+
+        if (enableCC) {
+            qDebug() << "Enabling carbon copies for account" << accName;
+#if (QXMPP_VERSION) < QT_VERSION_CHECK(1, 5, 0)
+            acc->cm->setCarbonsEnabled(true);
+#endif
+#ifdef WITH_OMEMO
+            if (!omemoToCarbonsConnected && acc->oh->hasOwnDevice()) {
+                // connect(this, &QXmppCarbonManager::messageSent, acc->om, &QXmppOmemoManager::handleMessage);
+                // connect(this, &QXmppCarbonManager::messageReceived, acc->om, &QXmppOmemoManager::handleMessage);
+                omemoToCarbonsConnected = true;
+            }
+        } else {
+            if (omemoToCarbonsConnected) {
+                // disconnect(this, &QXmppCarbonManager::messageSent, acc->om, &QXmppOmemoManager::handleMessage);
+                // disconnect(this, &QXmppCarbonManager::messageReceived, acc->om, &QXmppOmemoManager::handleMessage);
+                omemoToCarbonsConnected = false;
+            }
+#endif
+        }
+
+        qDebug() << "Requesting account" << accName << "capabilities";
+        acc->dm->requestInfo(bareJid);
+    } else if (from == bareJid) {
+        qDebug() << "Received capabilities for account" << accName << ":";
+        QList<QXmppDiscoveryIq::Identity> identities = info.identities();
+        bool pepSupported = false;
+        for (const QXmppDiscoveryIq::Identity& identity : identities) {
+            QString type = identity.type();
+            QString category = identity.category();
+            qDebug() << "    " << category << type;
+            if (type == "pep" && category == "pubsub") {
+                pepSupported = true;
+            }
+        }
+        acc->setPepSupport(pepSupported ? Shared::Support::supported : Shared::Support::unsupported);
+    } else {
+        QString node = info.queryNode();
+        if (!node.isEmpty()) {
+            qDebug() << "Received features and identities for account" << accName << "about" << from;
+            QStringList feats = info.features();
+            std::set<Shared::Identity> identities;
+            std::set<QString> features(feats.begin(), feats.end());
+            QList<QXmppDiscoveryIq::Identity> idents = info.identities();
+            for (const QXmppDiscoveryIq::Identity& ident : idents) {
+                Shared::Identity identity;
+                identity.category = ident.category();
+                identity.language = ident.language();
+                identity.name = ident.name();
+                identity.type = ident.type();
+                identities.insert(identity);
+
+                qDebug() << "    " << identity.name << identity.category << identity.type;
+            }
+            for (const QString& feat : features) {
+                qDebug() << "    " << feat;
+            }
+            emit acc->infoDiscovered(from, node, identities, features);
+        } else {
+            Contact* cont = acc->rh->getContact(from);
+            if (cont != nullptr) {
+                qDebug() << "Received info for account" << accName << "about contact" << from;
+                QList<QXmppDiscoveryIq::Identity> identities = info.identities();
+                bool pepSupported = false;
+                for (const QXmppDiscoveryIq::Identity& identity : identities) {
+                    QString type = identity.type();
+                    QString category = identity.category();
+                    qDebug() << "    " << category << type;
+                    if (type == "pep" && category == "pubsub") {
+                        pepSupported = true;
+                    }
+                }
+                cont->setPepSupport(pepSupported ? Shared::Support::supported : Shared::Support::unsupported);
+            }
+        }
+    }
+}

core/handlers/discoveryhandler.h

@@ -0,0 +1,48 @@
+// Squawk messenger. 
+// Copyright (C) 2019  Yury Gubich <blue@macaw.me>
+// 
+// This program is free software: you can redistribute it and/or modify
+// it under the terms of the GNU General Public License as published by
+// the Free Software Foundation, either version 3 of the License, or
+// (at your option) any later version.
+// 
+// This program is distributed in the hope that it will be useful,
+// but WITHOUT ANY WARRANTY; without even the implied warranty of
+// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+// GNU General Public License for more details.
+// 
+// You should have received a copy of the GNU General Public License
+// along with this program.  If not, see <http://www.gnu.org/licenses/>.
+
+#ifndef CORE_DISCOVERYHANDLER_H
+#define CORE_DISCOVERYHANDLER_H
+
+#include <QObject>
+
+#include <QXmppDiscoveryManager.h>
+#include <QXmppDiscoveryIq.h>
+
+namespace Core {
+class Account;
+
+class DiscoveryHandler : public QObject
+{
+    Q_OBJECT
+public:
+    DiscoveryHandler(Account* account);
+    ~DiscoveryHandler();
+
+    void initialize();
+
+private slots:
+    void onItemsReceived (const QXmppDiscoveryIq& items);
+    void onInfoReceived (const QXmppDiscoveryIq& info);
+
+private:
+    Account* acc;
+    bool omemoToCarbonsConnected;
+};
+
+}
+
+#endif // CORE_DISCOVERYHANDLER_H

core/handlers/messagehandler.cpp

@@ -19,72 +19,97 @@
 #include "messagehandler.h"
 #include "core/account.h"
 
+static const QMap<QString, QVariant> statePending({{"state", static_cast<uint8_t>(Shared::Message::State::pending)}});
+static const QMap<QString, QVariant> stateDelivered({{"state", static_cast<uint8_t>(Shared::Message::State::delivered)}});
+static const QMap<QString, QVariant> stateSent({{"state", static_cast<uint8_t>(Shared::Message::State::sent)}});
+
 Core::MessageHandler::MessageHandler(Core::Account* account):
     QObject(),
     acc(account),
     pendingStateMessages(),
     uploadingSlotsQueue()
-{
-}
+{}
 
-void Core::MessageHandler::onMessageReceived(const QXmppMessage& msg)
-{
+void Core::MessageHandler::onMessageReceived(const QXmppMessage& msg) {
+#if (QXMPP_VERSION) >= QT_VERSION_CHECK(1, 5, 0)
+#ifdef WITH_OMEMO
+    switch (msg.encryptionMethod()) {
+        case QXmpp::NoEncryption:
+            break;                          //just do nothing
+        case QXmpp::UnknownEncryption:
+            qDebug() << "Account" << acc->getName() << "received a message with unknown encryption type";
+            break;                          //let it go the way it is, there is nothing I can do here
+        case QXmpp::Otr:
+            qDebug() << "Account" << acc->getName() << "received an OTR encrypted message, not supported yet";
+            break;                          //let it go the way it is, there is nothing I can do yet
+        case QXmpp::LegacyOpenPgp:
+            qDebug() << "Account" << acc->getName() << "received an LegacyOpenPgp encrypted message, not supported yet";
+            break;                          //let it go the way it is, there is nothing I can do yet
+        case QXmpp::Ox:
+            qDebug() << "Account" << acc->getName() << "received an Ox encrypted message, not supported yet";
+            break;                          //let it go the way it is, there is nothing I can do yet
+        case QXmpp::Omemo0:
+            qDebug() << "Account" << acc->getName() << "received an Omemo0 encrypted message, not supported yet";
+            break;                          //let it go the way it is, there is nothing I can do yet
+        case QXmpp::Omemo1:
+            qDebug() << "Account" << acc->getName() << "received an Omemo1 encrypted message, not supported yet";
+            break;                          //let it go the way it is, there is nothing I can do yet
+        case QXmpp::Omemo2:
+            break;
+    }
+#endif
+#endif
     bool handled = false;
     switch (msg.type()) {
         case QXmppMessage::Normal:
             qDebug() << "received a message with type \"Normal\", not sure what to do with it now, skipping";
             break;
         case QXmppMessage::Chat:
+#if (QXMPP_VERSION) >= QT_VERSION_CHECK(1, 5, 0)
+            handled = handleChatMessage(msg, false, msg.isCarbonForwarded(), true);
+#else
             handled = handleChatMessage(msg);
+#endif
             break;
         case QXmppMessage::GroupChat:
             handled = handleGroupMessage(msg);
             break;
-        case QXmppMessage::Error: {
-            QString id = msg.id();
-            std::map<QString, QString>::const_iterator itr = pendingStateMessages.find(id);
-            if (itr != pendingStateMessages.end()) {
-                QString jid = itr->second;
-                RosterItem* cnt = acc->rh->getRosterItem(jid);
-                QMap<QString, QVariant> cData = {
-                    {"state", static_cast<uint>(Shared::Message::State::error)},
-                    {"errorText", msg.error().text()}
-                };
-                if (cnt != 0) {
-                    cnt->changeMessage(id, cData);
-                }
-                ;
-                emit acc->changeMessage(jid, id, cData);
-                pendingStateMessages.erase(itr);
-                handled = true;
-            } else {
+        case QXmppMessage::Error:
+            handled = handlePendingMessageError(msg.id(), msg.error().text());
+            if (!handled)
                 qDebug() << "received a message with type \"Error\", not sure what to do with it now, skipping";
-            }
-        }
+
             break;
         case QXmppMessage::Headline:
             qDebug() << "received a message with type \"Headline\", not sure what to do with it now, skipping";
             break;
     }
-    if (!handled) {
+    if (!handled)
         logMessage(msg);
 }
+
+bool Core::MessageHandler::handlePendingMessageError(const QString& id, const QString& errorText) {
+    return adjustPendingMessage(id, {
+            {"state", static_cast<uint8_t>(Shared::Message::State::error)},
+            {"errorText", errorText}
+        }, true);
 }
 
-bool Core::MessageHandler::handleChatMessage(const QXmppMessage& msg, bool outgoing, bool forwarded, bool guessing)
-{
-    if (msg.body().size() != 0 || msg.outOfBandUrl().size() > 0) {
+bool Core::MessageHandler::handleChatMessage(const QXmppMessage& msg, bool outgoing, bool forwarded, bool guessing) {
+    if (msg.body().isEmpty() && msg.outOfBandUrl().isEmpty())
+        return false;
+
     Shared::Message sMsg(Shared::Message::chat);
     initializeMessage(sMsg, msg, outgoing, forwarded, guessing);
     QString jid = sMsg.getPenPalJid();
     Contact* cnt = acc->rh->getContact(jid);
     if (cnt == 0) {
         cnt = acc->rh->addOutOfRosterContact(jid);
+        qDebug() << "appending message" << sMsg.getId() << "to an out of roster contact";
     }
-        if (outgoing) {
-            if (forwarded) {
+    if (sMsg.getOutgoing()) {
+        if (sMsg.getForwarded())
             sMsg.setState(Shared::Message::State::sent);
-            }
     } else {
         sMsg.setState(Shared::Message::State::delivered);
     }
@@ -103,30 +128,23 @@ bool Core::MessageHandler::handleChatMessage(const QXmppMessage& msg, bool outgo
 
     return true;
 }
-    return false;
-}
 
-bool Core::MessageHandler::handleGroupMessage(const QXmppMessage& msg, bool outgoing, bool forwarded, bool guessing)
-{
+bool Core::MessageHandler::handleGroupMessage(const QXmppMessage& msg, bool outgoing, bool forwarded, bool guessing) {
     const QString& body(msg.body());
-    if (body.size() != 0) {
-        QString id = msg.id();
+    if (body.isEmpty())
+        return false;
 
     Shared::Message sMsg(Shared::Message::groupChat);
     initializeMessage(sMsg, msg, outgoing, forwarded, guessing);
     QString jid = sMsg.getPenPalJid();
     Conference* cnt = acc->rh->getConference(jid);
-        if (cnt == 0) {
+    if (cnt == 0)
         return false;
-        }
 
-        std::map<QString, QString>::const_iterator pItr = pendingStateMessages.find(id);
-        if (pItr != pendingStateMessages.end()) {
-            QMap<QString, QVariant> cData = {{"state", static_cast<uint>(Shared::Message::State::delivered)}};
-            cnt->changeMessage(id, cData);
-            pendingStateMessages.erase(pItr);
-            emit acc->changeMessage(jid, id, cData);
-        } else {
+    bool result = adjustPendingMessage(msg.id(), stateDelivered, true);
+    if (result)             //then it was an echo of my own sent message, nothing else needs to be done
+        return result;
+
     QString oId = msg.replaceId();
     if (oId.size() > 0) {
         QMap<QString, QVariant> cData = {
@@ -138,30 +156,23 @@ bool Core::MessageHandler::handleGroupMessage(const QXmppMessage& msg, bool outg
     } else {
         cnt->appendMessageToArchive(sMsg);
         QDateTime minAgo = QDateTime::currentDateTimeUtc().addSecs(-60);
-                if (sMsg.getTime() > minAgo) {     //otherwise it's considered a delayed delivery, most probably MUC history receipt
+        if (sMsg.getTime() > minAgo)     //otherwise it's considered a delayed delivery, most probably MUC history initial fetch
             emit acc->message(sMsg);
-                } else {
-                    //qDebug() << "Delayed delivery: ";
-                }
-            }
     }
 
     return true;
 }
-    return false;
-}
 
-
-void Core::MessageHandler::initializeMessage(Shared::Message& target, const QXmppMessage& source, bool outgoing, bool forwarded, bool guessing) const
-{
+void Core::MessageHandler::initializeMessage(Shared::Message& target, const QXmppMessage& source, bool outgoing, bool forwarded, bool guessing) const {
     const QDateTime& time(source.stamp());
     QString id;
 #if (QXMPP_VERSION) >= QT_VERSION_CHECK(1, 3, 0)
     id = source.originId();
-    if (id.size() == 0) {
+    if (id.size() == 0)
         id = source.id();
-    }
+
     target.setStanzaId(source.stanzaId());
+    qDebug() << "initializing message with originId:" << source.originId() << ", id:" << source.id() << ", stansaId:" << source.stanzaId();
 #else
     id = source.id();
 #endif
@@ -170,35 +181,36 @@ void Core::MessageHandler::initializeMessage(Shared::Message& target, const QXmp
     if (messageId.size() == 0) {
         target.generateRandomId();          //TODO out of desperation, I need at least a random ID
         messageId = target.getId();
+        qDebug() << "Had do initialize a message with no id, assigning autogenerated" << messageId;
     }
     target.setFrom(source.from());
     target.setTo(source.to());
     target.setBody(source.body());
     target.setForwarded(forwarded);
+#ifdef WITH_OMEMO
+    #if (QXMPP_VERSION) >= QT_VERSION_CHECK(1, 5, 0)
+    if (source.encryptionMethod() == QXmpp::EncryptionMethod::Omemo2)
+        target.setEncryption(Shared::EncryptionProtocol::omemo2);
+    #endif
+#endif
+    
+    if (guessing)
+        outgoing = target.getFromJid() == acc->getBareJid();
 
-    if (guessing) {
-        if (target.getFromJid() == acc->getLogin() + "@" + acc->getServer()) {
-            outgoing = true;
-        } else {
-            outgoing = false;
-        }
-    }
     target.setOutgoing(outgoing);
-    if (time.isValid()) {
+    if (time.isValid())
         target.setTime(time);
-    } else {
+    else
         target.setCurrentTime();
-    }
 
     QString oob = source.outOfBandUrl();
-    if (oob.size() > 0) {
+    if (oob.size() > 0)
         target.setAttachPath(acc->network->addMessageAndCheckForPath(oob, acc->getName(), target.getPenPalJid(), messageId));
-    }
+
     target.setOutOfBandUrl(oob);
 }
 
-void Core::MessageHandler::logMessage(const QXmppMessage& msg, const QString& reason)
-{
+void Core::MessageHandler::logMessage(const QXmppMessage& msg, const QString& reason) {
     qDebug() << reason;
     qDebug() << "- from: " << msg.from();
     qDebug() << "- to: " << msg.to();
@@ -214,157 +226,282 @@ void Core::MessageHandler::logMessage(const QXmppMessage& msg, const QString& re
     qDebug() << "==============================";
 }
 
-void Core::MessageHandler::onCarbonMessageReceived(const QXmppMessage& msg)
-{
+#if (QXMPP_VERSION) < QT_VERSION_CHECK(1, 5, 0)
+void Core::MessageHandler::onCarbonMessageReceived(const QXmppMessage& msg) {
     handleChatMessage(msg, false, true);
 }
 
-void Core::MessageHandler::onCarbonMessageSent(const QXmppMessage& msg)
-{
+void Core::MessageHandler::onCarbonMessageSent(const QXmppMessage& msg) {
     handleChatMessage(msg, true, true);
 }
+#endif
 
-void Core::MessageHandler::onReceiptReceived(const QString& jid, const QString& id)
-{
+std::optional<Shared::MessageInfo> Core::MessageHandler::getOriginalPendingMessageId(const QString& id, bool clear) {
     std::map<QString, QString>::const_iterator itr = pendingStateMessages.find(id);
     if (itr != pendingStateMessages.end()) {
-        QMap<QString, QVariant> cData = {{"state", static_cast<uint>(Shared::Message::State::delivered)}};
-        RosterItem* ri = acc->rh->getRosterItem(itr->second);
-        if (ri != 0) {
-            ri->changeMessage(id, cData);
-        }
-        emit acc->changeMessage(itr->second, id, cData);
-        pendingStateMessages.erase(itr);
-    }
+        Shared::MessageInfo info(acc->name, itr->second, itr->first);
+        std::map<QString, QString>::const_iterator itrC = pendingCorrectionMessages.find(id);
+        if (itrC != pendingCorrectionMessages.end()) {
+            if (itrC->second.size() > 0)
+                info.jid = itrC->second;
+
+            if (clear)
+                pendingCorrectionMessages.erase(itrC);
         }
 
-void Core::MessageHandler::sendMessage(const Shared::Message& data, bool newMessage)
-{
+        if (clear)
+            pendingStateMessages.erase(itr);
+
+        return info;
+    }
+
+    return std::nullopt;
+}
+
+void Core::MessageHandler::onReceiptReceived(const QString& jid, const QString& id) {
+    SHARED_UNUSED(jid);
+    adjustPendingMessage(id, {{"state", static_cast<uint>(Shared::Message::State::delivered)}}, true);
+}
+
+void Core::MessageHandler::sendMessage(const Shared::Message& data, bool newMessage, QString originalId) {
     if (data.getOutOfBandUrl().size() == 0 && data.getAttachPath().size() > 0) {
+        pendingCorrectionMessages.insert(std::make_pair(data.getId(), originalId));
         prepareUpload(data, newMessage);
     } else {
-        performSending(data, newMessage);
+        performSending(data, originalId, newMessage);
     }
 }
 
-void Core::MessageHandler::performSending(Shared::Message data, bool newMessage)
-{
+void Core::MessageHandler::performSending(Shared::Message data, const QString& originalId, bool newMessage) {
     QString jid = data.getPenPalJid();
     QString id = data.getId();
-    QString oob = data.getOutOfBandUrl();
+    qDebug() << "Sending message with id:" << id;
+    if (originalId.size() > 0)
+        qDebug() << "To replace the one with id:" << originalId;
+
     RosterItem* ri = acc->rh->getRosterItem(jid);
-    bool sent = false;
-    QMap<QString, QVariant> changes;
+    if (newMessage && originalId.size() > 0)
+        newMessage = false;
+
     QDateTime sendTime = QDateTime::currentDateTimeUtc();
-    if (acc->state == Shared::ConnectionState::connected) {
-        QXmppMessage msg(acc->getFullJid(), data.getTo(), data.getBody(), data.getThread());
+    std::pair<Shared::Message::State, QString> result = scheduleSending(data, sendTime, originalId);
+    data.setState(result.first);
+    data.setErrorText(result.second);
+    
+    QMap<QString, QVariant> changes(getChanges(data, sendTime, newMessage, originalId));
+    if (ri != nullptr) {
+        if (newMessage)
+            ri->appendMessageToArchive(data);
+         else
+            ri->changeMessage(originalId.isEmpty() ? id : originalId, changes);
+
+        if (data.getState() != Shared::Message::State::error) {
+            pendingStateMessages.insert(std::make_pair(id, jid));
+            if (originalId.size() > 0)
+                pendingCorrectionMessages.insert(std::make_pair(id, originalId));
+        } else {
+            pendingStateMessages.erase(id);
+            pendingCorrectionMessages.erase(id);
+        }
+    }
+    
+    emit acc->changeMessage(jid, originalId.isEmpty() ? id : originalId, changes);
+}
+
+std::pair<Shared::Message::State, QString> Core::MessageHandler::scheduleSending(
+    const Shared::Message& message,
+    const QDateTime& sendTime,
+    const QString& originalId
+) {
+    if (acc->state != Shared::ConnectionState::connected)
+        return {Shared::Message::State::error, "You are is offline or reconnecting"};
+
+    QXmppMessage msg = createPacket(message, sendTime, originalId);
+    QString id = msg.id();
+#ifdef WITH_OMEMO
+    if (message.getEncryption() == Shared::EncryptionProtocol::omemo2) {
+        QXmppTask<QXmppE2eeExtension::MessageEncryptResult> task = acc->om->encryptMessage(std::move(msg), std::nullopt);
+        if (task.isFinished()) {
+            const QXmppE2eeExtension::MessageEncryptResult& res = task.result();
+            if (std::holds_alternative<std::unique_ptr<QXmppMessage>>(res)) {
+                qDebug() << "Successfully encrypted a message";
+                const std::unique_ptr<QXmppMessage>& encrypted = std::get<std::unique_ptr<QXmppMessage>>(res);
+                encrypted->setBody(QString());
+                encrypted->setOutOfBandUrl(QString());
+                bool success = acc->client.sendPacket(*encrypted.get());
+                if (success) {
+                    qDebug() << "Successfully sent an encrypted message";
+                    return {Shared::Message::State::sent, ""};
+                } else {
+                    qDebug() << "Couldn't sent an encrypted message";
+                    return {Shared::Message::State::error, "Error sending successfully encrypted message"};
+                }
+            } else if (std::holds_alternative<QXmppError>(res)) {
+                qDebug() << "Couldn't encrypt a message";
+                const QXmppError& err = std::get<QXmppError>(res);
+                return {Shared::Message::State::error, err.description};
+            } else {
+                qDebug() << "Couldn't encrypt a message";
+                return {Shared::Message::State::error, "Unexpected error ecryptng the message"};
+            }
+        } else {
+            task.then(this, [this, id] (QXmppE2eeExtension::MessageEncryptResult&& result) {
+                if (std::holds_alternative<std::unique_ptr<QXmppMessage>>(result)) {
+                    qDebug() << "Successfully encrypted a message";
+                    const std::unique_ptr<QXmppMessage>& encrypted = std::get<std::unique_ptr<QXmppMessage>>(result);
+                    encrypted->setBody(QString());
+                    encrypted->setOutOfBandUrl(QString());
+                    bool success = acc->client.sendPacket(*encrypted.get());
+                    if (success) {
+                        qDebug() << "Successfully sent an encrypted message";
+                        if (!adjustPendingMessage(id, stateSent, false))
+                            qDebug() << "Encrypted message has been successfully sent, but it couldn't be found to update the sate";
+                    } else {
+                        qDebug() << "Couldn't sent an encrypted message";
+                        handlePendingMessageError(id, "Error sending successfully encrypted message");
+                    }
+                } else if (std::holds_alternative<QXmppError>(result)) {
+                    qDebug() << "Couldn't encrypt a message";
+                    const QXmppError& err = std::get<QXmppError>(result);
+                    handlePendingMessageError(id, err.description);
+                } else {
+                    qDebug() << "Couldn't encrypt a message";
+                    handlePendingMessageError(id, "Unexpected error ecryptng the message");
+                }
+            });
+            return {Shared::Message::State::pending, ""};
+        }
+    } else
+#endif
+    {
+        bool success = acc->client.sendPacket(msg);
+        if (success)
+            return {Shared::Message::State::sent, ""};
+        else
+            return {Shared::Message::State::error, "Error sending message, internal QXMPP error"};
+    }
+}
+
+bool Core::MessageHandler::adjustPendingMessage(const QString& messageId, const QMap<QString, QVariant>& data, bool final) {
+    std::optional<Shared::MessageInfo> info = getOriginalPendingMessageId(messageId, final);
+    if (info) {
+        RosterItem* ri = acc->rh->getRosterItem(info->jid);
+        if (ri != nullptr)
+            ri->changeMessage(info->messageId, data);
+
+        emit acc->changeMessage(info->jid, info->messageId, data);
+        return true;
+    }
+
+    return false;
+}
+
+QMap<QString, QVariant> Core::MessageHandler::getChanges(Shared::Message& data, const QDateTime& time, bool newMessage, const QString& originalId) const {
+    QMap<QString, QVariant> changes;
+
+    QString oob = data.getOutOfBandUrl();
+    Shared::Message::State mstate = data.getState();
+    changes.insert("state", static_cast<uint>(mstate));
+    if (mstate == Shared::Message::State::error)
+        changes.insert("errorText", data.getErrorText());
+
+    if (oob.size() > 0)
+        changes.insert("outOfBandUrl", oob);
+
+    if (newMessage)
+        data.setTime(time);
+
+    if (originalId.size() > 0)
+        changes.insert("body", data.getBody());
+
+    changes.insert("stamp", time);
+
+    //sometimes (when the image is pasted with ctrl+v)
+    //I start sending message with one path, then copy it to downloads directory
+    //so, the final path changes. Let's assume it changes always since it costs me close to nothing
+    QString attachPath = data.getAttachPath();
+    if (attachPath.size() > 0) {
+        QString squawkified = Shared::squawkifyPath(attachPath);
+        changes.insert("attachPath", squawkified);
+        if (attachPath != squawkified)
+            data.setAttachPath(squawkified);
+    }
+
+    return changes;
+}
+
+QXmppMessage Core::MessageHandler::createPacket(const Shared::Message& data, const QDateTime& time, const QString& originalId) const {
+    QXmppMessage msg(QString(), data.getTo(), data.getBody(), data.getThread());
+    QString id(data.getId());
+
+    if (originalId.size() > 0)
+        msg.setReplaceId(originalId);
+
 
 #if (QXMPP_VERSION) >= QT_VERSION_CHECK(1, 3, 0)
     msg.setOriginId(id);
 #endif
     msg.setId(id);
     msg.setType(static_cast<QXmppMessage::Type>(data.getType()));       //it is safe here, my type is compatible
-        msg.setOutOfBandUrl(oob);
+    msg.setOutOfBandUrl(data.getOutOfBandUrl());
     msg.setReceiptRequested(true);
-        msg.setStamp(sendTime);
+    msg.setStamp(time);
 
-        sent = acc->client.sendPacket(msg);
-        //sent = false;
-        
-        if (sent) {
-            data.setState(Shared::Message::State::sent);
-        } else {
-            data.setState(Shared::Message::State::error);
-            data.setErrorText("Couldn't send message: internal QXMPP library error, probably need to check out the logs");
+    return msg;
 }
 
-    } else {
-        data.setState(Shared::Message::State::error);
-        data.setErrorText("You are is offline or reconnecting");
+void Core::MessageHandler::prepareUpload(const Shared::Message& data, bool newMessage) {
+    if (acc->state != Shared::ConnectionState::connected) {
+        handleUploadError(data.getPenPalJid(), data.getId(), "Account is offline or reconnecting");
+        qDebug() << "An attempt to send message with not connected account " << acc->name << ", skipping";
+        return;
     }
 
-    Shared::Message::State mstate = data.getState();
-    changes.insert("state", static_cast<uint>(mstate));
-    if (mstate == Shared::Message::State::error) {
-        changes.insert("errorText", data.getErrorText());
-    }
-    if (oob.size() > 0) {
-        changes.insert("outOfBandUrl", oob);
-    }
-    if (newMessage) {
-        data.setTime(sendTime);
-    }
-    changes.insert("stamp", sendTime);
-    
-    if (ri != 0) {
-        if (newMessage) {
-            ri->appendMessageToArchive(data);
-        } else {
-            ri->changeMessage(id, changes);
-        }
-        if (sent) {
-            pendingStateMessages.insert(std::make_pair(id, jid));
-        } else {
-            pendingStateMessages.erase(id);
-        }
-    }
-    
-    emit acc->changeMessage(jid, id, changes);
-}
-
-void Core::MessageHandler::prepareUpload(const Shared::Message& data, bool newMessage)
-{
-    if (acc->state == Shared::ConnectionState::connected) {
     QString jid = data.getPenPalJid();
     QString id = data.getId();
     RosterItem* ri = acc->rh->getRosterItem(jid);
-        if (!ri) {
+    if (ri == nullptr) {
         qDebug() << "An attempt to initialize upload in" << acc->name << "for pal" << jid << "but the object for this pal wasn't found, something went terrebly wrong, skipping send";
         return;
     }
+
     QString path = data.getAttachPath();
     QString url = acc->network->getFileRemoteUrl(path);
-        if (url.size() != 0) {
-            sendMessageWithLocalUploadedFile(data, url, newMessage);
-        } else {
+    if (url.size() != 0)
+        return sendMessageWithLocalUploadedFile(data, url, newMessage);
+
     pendingStateMessages.insert(std::make_pair(id, jid));
     if (newMessage) {
         ri->appendMessageToArchive(data);
     } else {
-                QMap<QString, QVariant> changes({
-                    {"state", (uint)Shared::Message::State::pending}
-                });
-                ri->changeMessage(id, changes);
-                emit acc->changeMessage(jid, id, changes);
+        ri->changeMessage(id, statePending);
+        emit acc->changeMessage(jid, id, statePending);
     }
-            //this checks if the file is already uploading, and if so it subscribes to it's success, so, i need to do stuff only if the network knows nothing of this file
-            if (!acc->network->checkAndAddToUploading(acc->getName(), jid, id, path)) {
-                if (acc->um->serviceFound()) {
+
+    //this checks if the file is already uploading, and if so it subscribes to it's success,
+    //So, I need to do stuff only if the network knows nothing of this file
+    if (acc->network->checkAndAddToUploading(acc->getName(), jid, id, path))
+        return;
+
+    if (!acc->um->serviceFound()) {
+        handleUploadError(jid, id, "Your server doesn't support file upload service, or it's prohibited for your account");
+        qDebug() << "Requested upload slot in account" << acc->name << "for file" << path << "but upload manager didn't discover any upload services";
+        return;
+    }
+
     QFileInfo file(path);
     if (file.exists() && file.isReadable()) {
         pendingStateMessages.insert(std::make_pair(id, jid));
         uploadingSlotsQueue.emplace_back(path, id);
-                        if (uploadingSlotsQueue.size() == 1) {
+        if (uploadingSlotsQueue.size() == 1)
             acc->um->requestUploadSlot(file);
-                        }
     } else {
         handleUploadError(jid, id, "Uploading file no longer exists or your system user has no permission to read it");
         qDebug() << "Requested upload slot in account" << acc->name << "for file" << path << "but the file doesn't exist or is not readable";
     }
-                } else {
-                    handleUploadError(jid, id, "Your server doesn't support file upload service, or it's prohibited for your account");
-                    qDebug() << "Requested upload slot in account" << acc->name << "for file" << path << "but upload manager didn't discover any upload services";
-                }
-            }
-        }
-    } else {
-        handleUploadError(data.getPenPalJid(), data.getId(), "Account is offline or reconnecting");
-        qDebug() << "An attempt to send message with not connected account " << acc->name << ", skipping";
-    }
 }
 
-void Core::MessageHandler::onUploadSlotReceived(const QXmppHttpUploadSlotIq& slot)
-{
+void Core::MessageHandler::onUploadSlotReceived(const QXmppHttpUploadSlotIq& slot) {
     if (uploadingSlotsQueue.size() == 0) {
         qDebug() << "HTTP Upload manager of account" << acc->name << "reports about success requesting upload slot, but none was requested";
     } else {
@@ -374,14 +511,12 @@ void Core::MessageHandler::onUploadSlotReceived(const QXmppHttpUploadSlotIq& slo
         acc->network->uploadFile({acc->name, palJid, mId}, pair.first, slot.putUrl(), slot.getUrl(), slot.putHeaders());
         
         uploadingSlotsQueue.pop_front();
-        if (uploadingSlotsQueue.size() > 0) {
+        if (uploadingSlotsQueue.size() > 0)
             acc->um->requestUploadSlot(uploadingSlotsQueue.front().first);
     }
 }
-}
 
-void Core::MessageHandler::onUploadSlotRequestFailed(const QXmppHttpUploadRequestIq& request)
-{
+void Core::MessageHandler::onUploadSlotRequestFailed(const QXmppHttpUploadRequestIq& request) {
     QString err(request.error().text());
     if (uploadingSlotsQueue.size() == 0) {
         qDebug() << "HTTP Upload manager of account" << acc->name << "reports about an error requesting upload slot, but none was requested";
@@ -392,94 +527,90 @@ void Core::MessageHandler::onUploadSlotRequestFailed(const QXmppHttpUploadReques
         handleUploadError(pendingStateMessages.at(pair.second), pair.second, err);
         
         uploadingSlotsQueue.pop_front();
-        if (uploadingSlotsQueue.size() > 0) {
+        if (uploadingSlotsQueue.size() > 0)
             acc->um->requestUploadSlot(uploadingSlotsQueue.front().first);
     }
 }
-}
 
-void Core::MessageHandler::onDownloadFileComplete(const std::list<Shared::MessageInfo>& msgs, const QString& path)
-{
+void Core::MessageHandler::onDownloadFileComplete(const std::list<Shared::MessageInfo>& msgs, const QString& path) {
     QMap<QString, QVariant> cData = {
         {"attachPath", path}
     };
     for (const Shared::MessageInfo& info : msgs) {
-        if (info.account == acc->getName()) {
+        if (info.account != acc->getName())
+            continue;
+
         RosterItem* cnt = acc->rh->getRosterItem(info.jid);
-            if (cnt != 0) {
-                if (cnt->changeMessage(info.messageId, cData)) {
+        if (cnt != nullptr) {
+            bool changed = cnt->changeMessage(info.messageId, cData);
+            if (changed)
                 emit acc->changeMessage(info.jid, info.messageId, cData);
         }
     }
 }
-    }
-}
 
-void Core::MessageHandler::onLoadFileError(const std::list<Shared::MessageInfo>& msgs, const QString& text, bool up)
-{
-    if (up) {
-        for (const Shared::MessageInfo& info : msgs) {
-            if (info.account == acc->getName()) {
+void Core::MessageHandler::onLoadFileError(const std::list<Shared::MessageInfo>& msgs, const QString& text, bool up) {
+    if (!up)
+        return;
+
+    for (const Shared::MessageInfo& info : msgs)
+        if (info.account == acc->getName())
             handleUploadError(info.jid, info.messageId, text);
 }
-        }
-    }
-}
 
-void Core::MessageHandler::handleUploadError(const QString& jid, const QString& messageId, const QString& errorText)
-{
+void Core::MessageHandler::handleUploadError(const QString& jid, const QString& messageId, const QString& errorText) {
     emit acc->uploadFileError(jid, messageId, "Error requesting slot to upload file: " + errorText);
-    pendingStateMessages.erase(jid);
+    pendingStateMessages.erase(messageId);
+    pendingCorrectionMessages.erase(messageId);
     requestChangeMessage(jid, messageId, {
         {"state", static_cast<uint>(Shared::Message::State::error)},
         {"errorText", errorText}
     });
 }
 
-void Core::MessageHandler::onUploadFileComplete(const std::list<Shared::MessageInfo>& msgs, const QString& path)
-{
+void Core::MessageHandler::onUploadFileComplete(const std::list<Shared::MessageInfo>& msgs, const QString& url, const QString& path) {
     for (const Shared::MessageInfo& info : msgs) {
-        if (info.account == acc->getName()) {
+        if (info.account != acc->getName())
+            continue;
+
         RosterItem* ri = acc->rh->getRosterItem(info.jid);
-            if (ri != 0) {
+        if (ri != nullptr) {
             Shared::Message msg = ri->getMessage(info.messageId);
-                sendMessageWithLocalUploadedFile(msg, path, false);
+            msg.setAttachPath(path);
+            sendMessageWithLocalUploadedFile(msg, url, false);
         } else {
             qDebug() << "A signal received about complete upload to" << acc->name << "for pal" << info.jid << "but the object for this pal wasn't found, something went terrebly wrong, skipping send";
         }
     }
 }
-}
 
-void Core::MessageHandler::sendMessageWithLocalUploadedFile(Shared::Message msg, const QString& url, bool newMessage)
-{
+void Core::MessageHandler::sendMessageWithLocalUploadedFile(Shared::Message msg, const QString& url, bool newMessage) {
     msg.setOutOfBandUrl(url);
-    if (msg.getBody().size() == 0) {    //not sure why, but most messages do that
+    if (msg.getBody().size() == 0)      //not sure why, but most messengers do that
         msg.setBody(url);               //they duplicate oob in body, some of them wouldn't even show an attachment if you don't do that
-    }                                   
-    performSending(msg, newMessage);
+
+    performSending(msg, pendingCorrectionMessages.at(msg.getId()), newMessage);
     //TODO removal/progress update
 }
 
-static const std::set<QString> allowerToChangeKeys({
+static const std::set<QString> allowedToChangeKeys({
     "attachPath",
     "outOfBandUrl",
     "state",
     "errorText"
 });
 
-void Core::MessageHandler::requestChangeMessage(const QString& jid, const QString& messageId, const QMap<QString, QVariant>& data)
-{
+void Core::MessageHandler::requestChangeMessage(const QString& jid, const QString& messageId, const QMap<QString, QVariant>& data) {
     RosterItem* cnt = acc->rh->getRosterItem(jid);
-    if (cnt != 0) {
+    if (cnt != nullptr) {
         bool allSupported = true;
         QString unsupportedString;
         for (QMap<QString, QVariant>::const_iterator itr = data.begin(); itr != data.end(); ++itr) {    //I need all this madness
-            if (allowerToChangeKeys.count(itr.key()) != 1) {                                                //to not allow this method
+            if (allowedToChangeKeys.count(itr.key()) != 1) {                                            //to not allow this method
                 allSupported = false;                                                                   //to make a message to look like if it was edited
                 unsupportedString = itr.key();                                                          //basically I needed to control who exaclty calls this method
-                break;                                                                                      //because the underlying tech assumes that the change is initiated by user
-            }                                                                                               //not by system
+                break;                                                                                  //because the underlying tech assumes that
+            }                                                                                           //the change is initiated by user, not by system
         }
         if (allSupported) {
             cnt->changeMessage(messageId, data);
@@ -491,18 +622,23 @@ void Core::MessageHandler::requestChangeMessage(const QString& jid, const QStrin
     }
 }
 
-void Core::MessageHandler::resendMessage(const QString& jid, const QString& id)
-{
+void Core::MessageHandler::resendMessage(const QString& jid, const QString& id) {
     RosterItem* cnt = acc->rh->getRosterItem(jid);
-    if (cnt != 0) {
+    if (cnt != nullptr) {
         try {
             Shared::Message msg = cnt->getMessage(id);
             if (msg.getState() == Shared::Message::State::error) {
+                if (msg.getEdited()) {
+                    QString originalId = msg.getId();
+                    msg.generateRandomId();
+                    sendMessage(msg, false, originalId);
+                } else {
                     sendMessage(msg, false);
+                }
             } else {
                 qDebug() << "An attempt to resend a message to" << jid << "by account" << acc->getName() << ", but this message seems to have been normally sent, this method was made to retry sending failed to be sent messages, skipping";
             }
-        } catch (const Archive::NotFound& err) {
+        } catch (const LMDBAL::NotFound& err) {
             qDebug() << "An attempt to resend a message to" << jid << "by account" << acc->getName() << ", but this message wasn't found in history, skipping";
         }
     } else {

core/handlers/messagehandler.h

@@ -16,48 +16,49 @@
  * along with this program.  If not, see <http://www.gnu.org/licenses/>.
  */
 
-#ifndef CORE_MESSAGEHANDLER_H
-#define CORE_MESSAGEHANDLER_H
+#pragma once
 
 #include <QObject>
 
 #include <deque>
 #include <map>
+#include <functional>
+#include <optional>
 
 #include <QXmppMessage.h>
 #include <QXmppHttpUploadIq.h>
+#ifdef WITH_OMEMO
+    #include <QXmppE2eeExtension.h>
+#endif
 
 #include <shared/message.h>
 #include <shared/messageinfo.h>
+#include <shared/pathcheck.h>
 
 namespace Core {
-
-/**
- * @todo write docs
- */
-
 class Account;
 
-class MessageHandler : public QObject
-{
+class MessageHandler : public QObject {
     Q_OBJECT
 public:
     MessageHandler(Account* account);
     
 public:
-    void sendMessage(const Shared::Message& data, bool newMessage = true);
+    void sendMessage(const Shared::Message& data, bool newMessage = true, QString originalId = "");
     void initializeMessage(Shared::Message& target, const QXmppMessage& source, bool outgoing = false, bool forwarded = false, bool guessing = false) const;
     void resendMessage(const QString& jid, const QString& id);
     
 public slots:
     void onMessageReceived(const QXmppMessage& message);
+#if (QXMPP_VERSION) < QT_VERSION_CHECK(1, 5, 0)
     void onCarbonMessageReceived(const QXmppMessage& message);
     void onCarbonMessageSent(const QXmppMessage& message);
+#endif
     void onReceiptReceived(const QString& jid, const QString& id);    
     void onUploadSlotReceived(const QXmppHttpUploadSlotIq& slot);
     void onUploadSlotRequestFailed(const QXmppHttpUploadRequestIq& request);
     void onDownloadFileComplete(const std::list<Shared::MessageInfo>& msgs, const QString& path);
-    void onUploadFileComplete(const std::list<Shared::MessageInfo>& msgs, const QString& path);
+    void onUploadFileComplete(const std::list<Shared::MessageInfo>& msgs, const QString& url, const QString& path);
     void onLoadFileError(const std::list<Shared::MessageInfo>& msgs, const QString& path, bool up);
     void requestChangeMessage(const QString& jid, const QString& messageId, const QMap<QString, QVariant>& data);
     
@@ -66,16 +67,21 @@ private:
     bool handleGroupMessage(const QXmppMessage& msg, bool outgoing = false, bool forwarded = false, bool guessing = false);
     void logMessage(const QXmppMessage& msg, const QString& reason = "Message wasn't handled: ");
     void sendMessageWithLocalUploadedFile(Shared::Message msg, const QString& url, bool newMessage = true);
-    void performSending(Shared::Message data, bool newMessage = true);
+    void performSending(Shared::Message data, const QString& originalId, bool newMessage = true);
     void prepareUpload(const Shared::Message& data, bool newMessage = true);
     void handleUploadError(const QString& jid, const QString& messageId, const QString& errorText);
+    QXmppMessage createPacket(const Shared::Message& data, const QDateTime& time, const QString& originalId) const;
+    QMap<QString, QVariant> getChanges(Shared::Message& data, const QDateTime& time, bool newMessage, const QString& originalId) const;
+    std::optional<Shared::MessageInfo> getOriginalPendingMessageId(const QString& id, bool clear = true);
+    bool handlePendingMessageError(const QString& id, const QString& errorText);
+    std::pair<Shared::Message::State, QString> scheduleSending(const Shared::Message& message, const QDateTime& sendTime, const QString& originalId);
+    bool adjustPendingMessage(const QString& messageId, const QMap<QString, QVariant>& data, bool final);
     
 private:
     Account* acc;
     std::map<QString, QString> pendingStateMessages;        //key is message id, value is JID
+    std::map<QString, QString> pendingCorrectionMessages;   //key is new mesage, value is originalOne
     std::deque<std::pair<QString, QString>> uploadingSlotsQueue;
 };
 
 }
-
-#endif // CORE_MESSAGEHANDLER_H

core/handlers/omemohandler.cpp

@@ -0,0 +1,285 @@
+/*
+ * Squawk messenger.
+ * Copyright (C) 2019  Yury Gubich <blue@macaw.me>
+ *
+ * This program is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation, either version 3 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program.  If not, see <http://www.gnu.org/licenses/>.
+ */
+
+#include <QDebug>
+#include "omemohandler.h"
+#include "core/account.h"
+#include "core/adapterfunctions.h"
+
+Core::OmemoHandler::OmemoHandler(Account* account) :
+    QObject(),
+    QXmppOmemoStorage(),
+    acc(account),
+    ownDevice(std::nullopt),
+    db(acc->getName() + "/omemo"),
+    meta(db.addCache<QString, QVariant>("meta")),
+    devices(db.addCache<QString, QHash<uint32_t, Device>>("devices")),
+    preKeyPairs(db.addCache<uint32_t, QByteArray>("preKeyPairs")),
+    signedPreKeyPairs(db.addCache<uint32_t, SignedPreKeyPair>("signedPreKeyPairs"))
+{
+    db.open();
+    try {
+        QVariant own = meta->getRecord("ownDevice");
+        ownDevice = own.value<OwnDevice>();
+        qDebug() << "Successfully found own device omemo data for account" << acc->getName();
+    } catch (const LMDBAL::NotFound& e) {
+        qDebug() << "No device omemo data was found for account" << acc->getName();
+    }
+}
+
+Core::OmemoHandler::~OmemoHandler() {
+    db.close();
+}
+
+bool Core::OmemoHandler::hasOwnDevice() {
+    return ownDevice.has_value();
+}
+
+QXmppTask<QXmppOmemoStorage::OmemoData> Core::OmemoHandler::allData() {
+    OmemoData data;
+    data.ownDevice = ownDevice;
+
+    LMDBAL::Transaction txn = db.beginReadOnlyTransaction();
+    std::map<uint32_t, QByteArray> pkeys = preKeyPairs->readAll(txn);
+    for (const std::pair<const uint32_t, QByteArray>& pair : pkeys)
+        data.preKeyPairs.insert(pair.first, pair.second);
+
+    std::map<uint32_t, SignedPreKeyPair> spre = signedPreKeyPairs->readAll(txn);
+    for (const std::pair<const uint32_t, SignedPreKeyPair>& pair : spre) {
+        QXmppOmemoStorage::SignedPreKeyPair qxpair = {pair.second.first, pair.second.second};
+        data.signedPreKeyPairs.insert(pair.first, qxpair);
+    }
+
+    std::map<QString, QHash<uint32_t, Device>> devs = devices->readAll(txn);
+    for (const std::pair<const QString, QHash<uint32_t, Device>>& pair : devs)
+        data.devices.insert(pair.first, pair.second);
+
+    return Core::makeReadyTask(std::move(data));
+}
+
+QXmppTask<void> Core::OmemoHandler::addDevice(const QString& jid, uint32_t deviceId, const QXmppOmemoStorage::Device& device) {
+    QHash<uint32_t, Device> devs;
+    LMDBAL::WriteTransaction txn = db.beginTransaction();
+    bool had = true;
+    try {
+        devices->getRecord(jid, devs, txn);
+    } catch (const LMDBAL::NotFound& error) {
+        had = false;
+    }
+
+    devs.insert(deviceId, device);  //overwrites
+    if (had)
+        devices->changeRecord(jid, devs, txn);
+    else
+        devices->addRecord(jid, devs, txn);
+
+    txn.commit();
+    return Core::makeReadyTask();
+}
+
+QXmppTask<void> Core::OmemoHandler::addPreKeyPairs(const QHash<uint32_t, QByteArray>& keyPairs) {
+    LMDBAL::WriteTransaction txn = db.beginTransaction();
+    for (QHash<uint32_t, QByteArray>::const_iterator itr = keyPairs.begin(), end = keyPairs.end(); itr != end; ++itr)
+        preKeyPairs->forceRecord(itr.key(), itr.value(), txn);
+
+    txn.commit();
+    return Core::makeReadyTask();
+}
+
+QXmppTask<void> Core::OmemoHandler::addSignedPreKeyPair(uint32_t keyId, const QXmppOmemoStorage::SignedPreKeyPair& keyPair) {
+    signedPreKeyPairs->forceRecord(keyId, std::make_pair(keyPair.creationDate, keyPair.data));
+    return Core::makeReadyTask();
+}
+
+QXmppTask<void> Core::OmemoHandler::removeDevice(const QString& jid, uint32_t deviceId) {
+    LMDBAL::WriteTransaction txn = db.beginTransaction();
+    QHash<uint32_t, Device> devs = devices->getRecord(jid, txn);
+    devs.remove(deviceId);
+    if (devs.isEmpty())
+        devices->removeRecord(jid, txn);
+    else
+        devices->changeRecord(jid, devs, txn);
+
+    txn.commit();
+    return Core::makeReadyTask();
+}
+
+QXmppTask<void> Core::OmemoHandler::removeDevices(const QString& jid) {
+    devices->removeRecord(jid);
+    return Core::makeReadyTask();
+}
+
+QXmppTask<void> Core::OmemoHandler::removePreKeyPair(uint32_t keyId) {
+    try {
+        preKeyPairs->removeRecord(keyId);
+    } catch (const LMDBAL::NotFound& e) {
+        qDebug() << "Couldn't remove preKeyPair " << e.what();
+    }
+    return Core::makeReadyTask();
+}
+
+QXmppTask<void> Core::OmemoHandler::removeSignedPreKeyPair(uint32_t keyId) {
+    try {
+        signedPreKeyPairs->removeRecord(keyId);
+    } catch (const LMDBAL::NotFound& e) {}
+    return Core::makeReadyTask();
+}
+
+QXmppTask<void> Core::OmemoHandler::setOwnDevice(const std::optional<OwnDevice>& device) {
+    bool had = ownDevice.has_value();
+    ownDevice = device;
+    if (ownDevice.has_value()) {
+        if (had)
+            meta->changeRecord("ownDevice", QVariant::fromValue(ownDevice.value()));
+        else
+            meta->addRecord("ownDevice", QVariant::fromValue(ownDevice.value()));
+    } else if (had) {
+        meta->removeRecord("ownDevice");
+    }
+    return Core::makeReadyTask();
+}
+
+QXmppTask<void> Core::OmemoHandler::resetAll() {
+    ownDevice = std::nullopt;
+    db.drop();
+
+    return Core::makeReadyTask();
+}
+
+void Core::OmemoHandler::getDevices(const QString& jid, std::list<Shared::KeyInfo>& out) const {
+    QHash<uint32_t, Device> devs;
+    try {
+        devices->getRecord(jid, devs);
+    } catch (const LMDBAL::NotFound& error) {}
+
+    for (QHash<uint32_t, Device>::const_iterator itr = devs.begin(), end = devs.end(); itr != end; ++itr) {
+        const Device& dev = itr.value();
+        out.emplace_back(
+            itr.key(),
+            dev.keyId,
+            dev.label,
+            dev.removalFromDeviceListDate,
+            Shared::TrustLevel::undecided,
+            Shared::EncryptionProtocol::omemo2,
+            false
+        );
+    }
+}
+
+void Core::OmemoHandler::requestBundles(const QString& jid) {
+    QXmppTask<void> task = acc->om->buildMissingSessions({jid});
+    Contact* cnt = acc->rh->getContact(jid);
+    if (cnt)
+        cnt->omemoBundles = Shared::Possible::discovering;
+
+    task.then(this, std::bind(&OmemoHandler::onBundlesReceived, this, jid));
+}
+
+void Core::OmemoHandler::requestOwnBundles() {
+    QXmppTask<void> task = acc->om->buildMissingSessions({acc->getBareJid()});
+    task.then(this, std::bind(&OmemoHandler::onOwnBundlesReceived, this));
+}
+
+void Core::OmemoHandler::onBundlesReceived(const QString& jid) {
+    std::list<Shared::KeyInfo> keys = readKeys(jid);
+
+    Contact* cnt = acc->rh->getContact(jid);
+    if (cnt)
+        cnt->omemoBundles = Shared::Possible::present;
+
+    acc->delay->receivedBundles(jid, keys);
+}
+
+void Core::OmemoHandler::onOwnBundlesReceived() {
+    std::list<Shared::KeyInfo> keys = readKeys(acc->getBareJid());
+    if (ownDevice)
+        keys.emplace_front(
+            ownDevice->id,
+            ownDevice->publicIdentityKey,
+            ownDevice->label,
+            QDateTime::currentDateTime(),
+            Shared::TrustLevel::authenticated,
+            Shared::EncryptionProtocol::omemo2,
+            true
+        );
+
+    acc->delay->receivedOwnBundles(keys);
+}
+
+std::list<Shared::KeyInfo> Core::OmemoHandler::readKeys(const QString& jid) {
+    std::list<Shared::KeyInfo> keys;
+    getDevices(jid, keys);
+    std::map<QByteArray, Shared::TrustLevel> trustLevels = acc->th->getKeys(Shared::EncryptionProtocol::omemo2, jid);
+
+    for (Shared::KeyInfo& key : keys) {
+        std::map<QByteArray, Shared::TrustLevel>::const_iterator itr = trustLevels.find(key.fingerPrint);
+        if (itr != trustLevels.end())
+            key.trustLevel = itr->second;
+    }
+
+    return keys;
+}
+
+void Core::OmemoHandler::onOmemoDeviceAdded(const QString& jid, uint32_t id) {
+    SHARED_UNUSED(id);
+    qDebug() << "OMEMO device added for" << jid;
+}
+
+QDataStream & operator >> (QDataStream& in, QXmppOmemoStorage::Device& device) {
+    in >> device.label;
+    in >> device.keyId;
+    in >> device.session;
+    in >> device.unrespondedSentStanzasCount;
+    in >> device.unrespondedReceivedStanzasCount;
+    in >> device.removalFromDeviceListDate;
+
+    return in;
+}
+
+QDataStream & operator << (QDataStream& out, const QXmppOmemoStorage::Device& device) {
+    out << device.label;
+    out << device.keyId;
+    out << device.session;
+    out << device.unrespondedSentStanzasCount;
+    out << device.unrespondedReceivedStanzasCount;
+    out << device.removalFromDeviceListDate;
+
+    return out;
+}
+
+QDataStream & operator >> (QDataStream& in, QXmppOmemoStorage::OwnDevice& device) {
+    in >> device.id;
+    in >> device.label;
+    in >> device.privateIdentityKey;
+    in >> device.publicIdentityKey;
+    in >> device.latestSignedPreKeyId;
+    in >> device.latestPreKeyId;
+
+    return in;
+}
+
+QDataStream & operator << (QDataStream& out, const QXmppOmemoStorage::OwnDevice& device) {
+    out << device.id;
+    out << device.label;
+    out << device.privateIdentityKey;
+    out << device.publicIdentityKey;
+    out << device.latestSignedPreKeyId;
+    out << device.latestPreKeyId;
+
+    return out;
+}

core/handlers/omemohandler.h

@@ -0,0 +1,90 @@
+/*
+ * Squawk messenger.
+ * Copyright (C) 2019  Yury Gubich <blue@macaw.me>
+ *
+ * This program is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation, either version 3 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program.  If not, see <http://www.gnu.org/licenses/>.
+ */
+#pragma once
+
+#include <map>
+#include <list>
+#include <functional>
+
+#include <QXmppOmemoStorage.h>
+#include <cache.h>
+
+#include <shared/keyinfo.h>
+#include <shared/enums.h>
+
+Q_DECLARE_METATYPE(QXmppOmemoStorage::OwnDevice);
+Q_DECLARE_METATYPE(QXmppOmemoStorage::Device);
+
+namespace Core {
+class Account;
+
+class OmemoHandler : public QObject, public QXmppOmemoStorage {
+    Q_OBJECT
+public:
+    typedef std::pair<QDateTime, QByteArray> SignedPreKeyPair;
+
+    OmemoHandler(Account* account);
+    ~OmemoHandler() override;
+
+    virtual QXmppTask<OmemoData> allData() override;
+
+    virtual QXmppTask<void> setOwnDevice(const std::optional<OwnDevice> &device) override;
+
+    virtual QXmppTask<void> addSignedPreKeyPair(uint32_t keyId, const QXmppOmemoStorage::SignedPreKeyPair &keyPair) override;
+    virtual QXmppTask<void> removeSignedPreKeyPair(uint32_t keyId) override;
+
+    virtual QXmppTask<void> addPreKeyPairs(const QHash<uint32_t, QByteArray> &keyPairs) override;
+    virtual QXmppTask<void> removePreKeyPair(uint32_t keyId) override;
+
+    virtual QXmppTask<void> addDevice(const QString &jid, uint32_t deviceId, const Device &device) override;
+    virtual QXmppTask<void> removeDevice(const QString &jid, uint32_t deviceId) override;
+    virtual QXmppTask<void> removeDevices(const QString &jid) override;
+
+    virtual QXmppTask<void> resetAll() override;
+
+    bool hasOwnDevice();
+
+    void requestBundles(const QString& jid);
+    void requestOwnBundles();
+    void getDevices(const QString& jid, std::list<Shared::KeyInfo>& out) const;
+
+public slots:
+    void onOmemoDeviceAdded(const QString& jid, uint32_t id);
+
+private slots:
+    void onBundlesReceived(const QString& jid);
+    void onOwnBundlesReceived();
+    std::list<Shared::KeyInfo> readKeys(const QString& jid);
+
+private:
+    Account* acc;
+    std::optional<OwnDevice> ownDevice;
+    LMDBAL::Base db;
+    LMDBAL::Cache<QString, QVariant>* meta;
+    LMDBAL::Cache<QString, QHash<uint32_t, Device>>* devices;
+    LMDBAL::Cache<uint32_t, QByteArray>* preKeyPairs;
+    LMDBAL::Cache<uint32_t, SignedPreKeyPair>* signedPreKeyPairs;
+};
+
+}
+
+QDataStream& operator << (QDataStream &out, const QXmppOmemoStorage::Device& device);
+QDataStream& operator >> (QDataStream &in, QXmppOmemoStorage::Device& device);
+
+QDataStream& operator << (QDataStream &out, const QXmppOmemoStorage::OwnDevice& device);
+QDataStream& operator >> (QDataStream &in, QXmppOmemoStorage::OwnDevice& device);

core/handlers/rosterhandler.cpp

@@ -26,8 +26,9 @@ Core::RosterHandler::RosterHandler(Core::Account* account):
     conferences(),
     groups(),
     queuedContacts(),
-    outOfRosterContacts()
-{
+    outOfRosterContacts() {}
+
+void Core::RosterHandler::initialize() {
     connect(acc->rm, &QXmppRosterManager::rosterReceived, this, &RosterHandler::onRosterReceived);
     connect(acc->rm, &QXmppRosterManager::itemAdded, this, &RosterHandler::onRosterItemAdded);
     connect(acc->rm, &QXmppRosterManager::itemRemoved, this, &RosterHandler::onRosterItemRemoved);
@@ -36,24 +37,30 @@ Core::RosterHandler::RosterHandler(Core::Account* account):
 
     connect(acc->mm, &QXmppMucManager::roomAdded, this, &RosterHandler::onMucRoomAdded);
     connect(acc->bm, &QXmppBookmarkManager::bookmarksReceived, this, &RosterHandler::bookmarksReceived);
+
+    connect(acc, &Account::pepSupportChanged, this, &RosterHandler::onPepSupportedChanged);
+
+#if (QXMPP_VERSION) >= QT_VERSION_CHECK(1, 5, 0)
+    connect(acc->th, &TrustHandler::trustLevelsChanged, this, &RosterHandler::onTrustChanged);
+#endif
 }
 
-Core::RosterHandler::~RosterHandler()
-{
-    for (std::map<QString, Contact*>::const_iterator itr = contacts.begin(), end = contacts.end(); itr != end; ++itr) {
-        delete itr->second;
+Core::RosterHandler::~RosterHandler() {
+    clear();
 }
 
-    for (std::map<QString, Conference*>::const_iterator itr = conferences.begin(), end = conferences.end(); itr != end; ++itr) {
-        delete itr->second;
-    }
+void Core::RosterHandler::clear() {
+    for (const std::pair<const QString, Contact*>& pair : contacts)
+        delete pair.second;
+
+    for (const std::pair<const QString, Conference*>& pair : conferences)
+        delete pair.second;
+
+    contacts.clear();
+    conferences.clear();
 }
 
-void Core::RosterHandler::onRosterReceived()
-{
-    acc->vm->requestClientVCard();         //TODO need to make sure server actually supports vCards
-    acc->ownVCardRequestInProgress = true;
-    
+void Core::RosterHandler::onRosterReceived() {
     QStringList bj = acc->rm->getRosterBareJids();
     for (int i = 0; i < bj.size(); ++i) {
         const QString& jid = bj[i];
@@ -61,8 +68,7 @@ void Core::RosterHandler::onRosterReceived()
     }
 }
 
-void Core::RosterHandler::onRosterItemAdded(const QString& bareJid)
-{
+void Core::RosterHandler::onRosterItemAdded(const QString& bareJid) {
     QString lcJid = bareJid.toLower();
     addedAccount(lcJid);
     std::map<QString, QString>::const_iterator itr = queuedContacts.find(lcJid);
@@ -72,8 +78,7 @@ void Core::RosterHandler::onRosterItemAdded(const QString& bareJid)
     }
 }
 
-void Core::RosterHandler::addedAccount(const QString& jid)
-{
+void Core::RosterHandler::addedAccount(const QString& jid) {
     std::map<QString, Contact*>::const_iterator itr = contacts.find(jid);
     QXmppRosterIq::Item re = acc->rm->getRosterEntry(jid);
     Contact* contact;
@@ -82,7 +87,6 @@ void Core::RosterHandler::addedAccount(const QString& jid)
         newContact = true;
         contact = new Contact(jid, acc->name);
         contacts.insert(std::make_pair(jid, contact));
-        
     } else {
         contact = itr->second;
     }
@@ -94,70 +98,44 @@ void Core::RosterHandler::addedAccount(const QString& jid)
     contact->setName(re.name());
     
     if (newContact) {
-        QMap<QString, QVariant> cData({
-            {"name", re.name()},
-            {"state", QVariant::fromValue(state)}
-        });
-        
-        careAboutAvatar(contact, cData);
+        handleNewContact(contact);
+        QMap<QString, QVariant> cData = contact->getInfo();
+#if (QXMPP_VERSION) >= QT_VERSION_CHECK(1, 5, 0)
+        cData.insert("trust", QVariant::fromValue(acc->th->getSummary(jid)));
+#endif
         int grCount = 0;
-        for (QSet<QString>::const_iterator itr = gr.begin(), end = gr.end(); itr != end; ++itr) {
-            const QString& groupName = *itr;
+        for (const QString& groupName : gr) {
             addToGroup(jid, groupName);
             emit acc->addContact(jid, groupName, cData);
             grCount++;
         }
         
-        if (grCount == 0) {
+        if (grCount == 0)
             emit acc->addContact(jid, "", cData);
+
+        if (acc->pepSupport == Shared::Support::supported) {
+            acc->dm->requestInfo(jid);
+            //acc->dm->requestItems(jid);
         }
-        handleNewContact(contact);
     }
 }
 
-void Core::RosterHandler::addNewRoom(const QString& jid, const QString& nick, const QString& roomName, bool autoJoin)
-{
+void Core::RosterHandler::addNewRoom(const QString& jid, const QString& nick, const QString& roomName, bool autoJoin) {
     QXmppMucRoom* room = acc->mm->addRoom(jid);
     QString lNick = nick;
-    if (lNick.size() == 0) {
+    if (lNick.size() == 0)
         lNick = acc->getName();
-    }
+
     Conference* conf = new Conference(jid, acc->getName(), autoJoin, roomName, lNick, room);
     conferences.insert(std::make_pair(jid, conf));
     
     handleNewConference(conf);
     
-    QMap<QString, QVariant> cData = {
-        {"autoJoin", conf->getAutoJoin()},
-        {"joined", conf->getJoined()},
-        {"nick", conf->getNick()},
-        {"name", conf->getName()},
-        {"avatars", conf->getAllAvatars()}
-    };
-    careAboutAvatar(conf, cData);
+    QMap<QString, QVariant> cData = conf->getInfo();
     emit acc->addRoom(jid, cData);
 }
 
-void Core::RosterHandler::careAboutAvatar(Core::RosterItem* item, QMap<QString, QVariant>& data)
-{
-    Archive::AvatarInfo info;
-    bool hasAvatar = item->readAvatarInfo(info);
-    if (hasAvatar) {
-        if (info.autogenerated) {
-            data.insert("avatarState", QVariant::fromValue(Shared::Avatar::autocreated));
-        } else {
-            data.insert("avatarState", QVariant::fromValue(Shared::Avatar::valid));
-        }
-        data.insert("avatarPath", item->avatarPath() + "." + info.type);
-    } else {
-        data.insert("avatarState", QVariant::fromValue(Shared::Avatar::empty));
-        data.insert("avatarPath", "");
-        acc->requestVCard(item->jid);
-    }
-}
-
-void Core::RosterHandler::addContactRequest(const QString& jid, const QString& name, const QSet<QString>& groups)
-{
+void Core::RosterHandler::addContactRequest(const QString& jid, const QString& name, const QSet<QString>& groups) {
     if (acc->state == Shared::ConnectionState::connected) {
         std::map<QString, QString>::const_iterator itr = queuedContacts.find(jid);
         if (itr != queuedContacts.end()) {
@@ -171,8 +149,7 @@ void Core::RosterHandler::addContactRequest(const QString& jid, const QString& n
     }
 }
 
-void Core::RosterHandler::removeContactRequest(const QString& jid)
-{
+void Core::RosterHandler::removeContactRequest(const QString& jid) {
     QString lcJid = jid.toLower();
     if (acc->state == Shared::ConnectionState::connected) {
         std::set<QString>::const_iterator itr = outOfRosterContacts.find(lcJid);
@@ -187,25 +164,23 @@ void Core::RosterHandler::removeContactRequest(const QString& jid)
     }
 }
 
-void Core::RosterHandler::handleNewRosterItem(Core::RosterItem* contact)
-{
+void Core::RosterHandler::handleNewRosterItem(Core::RosterItem* contact) {
     connect(contact, &RosterItem::needHistory, this->acc, &Account::onContactNeedHistory);
     connect(contact, &RosterItem::historyResponse, this->acc, &Account::onContactHistoryResponse);
     connect(contact, &RosterItem::nameChanged, this, &RosterHandler::onContactNameChanged);
     connect(contact, &RosterItem::avatarChanged, this, &RosterHandler::onContactAvatarChanged);
-    connect(contact, &RosterItem::requestVCard, this->acc, &Account::requestVCard);
+    connect(contact, &RosterItem::encryptionChanged, this, &RosterHandler::onContactEncryptionChanged);
+    connect(contact, &RosterItem::requestVCard, acc->delay, &DelayManager::Manager::getVCard);
 }
 
-void Core::RosterHandler::handleNewContact(Core::Contact* contact)
-{
+void Core::RosterHandler::handleNewContact(Core::Contact* contact) {
     handleNewRosterItem(contact);
     connect(contact, &Contact::groupAdded, this, &RosterHandler::onContactGroupAdded);
     connect(contact, &Contact::groupRemoved, this, &RosterHandler::onContactGroupRemoved);
     connect(contact, &Contact::subscriptionStateChanged, this, &RosterHandler::onContactSubscriptionStateChanged);
 }
 
-void Core::RosterHandler::handleNewConference(Core::Conference* contact)
-{
+void Core::RosterHandler::handleNewConference(Core::Conference* contact) {
     handleNewRosterItem(contact);
     connect(contact, &Conference::nickChanged, this, &RosterHandler::onMucNickNameChanged);
     connect(contact, &Conference::subjectChanged, this, &RosterHandler::onMucSubjectChanged);
@@ -216,34 +191,27 @@ void Core::RosterHandler::handleNewConference(Core::Conference* contact)
     connect(contact, &Conference::removeParticipant, this, &RosterHandler::onMucRemoveParticipant);
 }
 
-void Core::RosterHandler::onMucAddParticipant(const QString& nickName, const QMap<QString, QVariant>& data)
-{
+void Core::RosterHandler::onMucAddParticipant(const QString& nickName, const QMap<QString, QVariant>& data) {
     Conference* room = static_cast<Conference*>(sender());
     emit acc->addRoomParticipant(room->jid, nickName, data);
 }
 
-void Core::RosterHandler::onMucChangeParticipant(const QString& nickName, const QMap<QString, QVariant>& data)
-{
+void Core::RosterHandler::onMucChangeParticipant(const QString& nickName, const QMap<QString, QVariant>& data) {
     Conference* room = static_cast<Conference*>(sender());
     emit acc->changeRoomParticipant(room->jid, nickName, data);
 }
 
-void Core::RosterHandler::onMucRemoveParticipant(const QString& nickName)
-{
+void Core::RosterHandler::onMucRemoveParticipant(const QString& nickName) {
     Conference* room = static_cast<Conference*>(sender());
     emit acc->removeRoomParticipant(room->jid, nickName);
 }
 
-void Core::RosterHandler::onMucSubjectChanged(const QString& subject)
-{
+void Core::RosterHandler::onMucSubjectChanged(const QString& subject) {
     Conference* room = static_cast<Conference*>(sender());
-    emit acc->changeRoom(room->jid, {
-        {"subject", subject}
-    });
+    emit acc->changeRoom(room->jid, {{"subject", subject}});
 }
 
-void Core::RosterHandler::onContactGroupAdded(const QString& group)
-{
+void Core::RosterHandler::onContactGroupAdded(const QString& group) {
     Contact* contact = static_cast<Contact*>(sender());
     if (contact->groupsCount() == 1) {
         // not sure i need to handle it here, the situation with grouped and ungrouped contacts handled on the client anyway
@@ -251,14 +219,17 @@ void Core::RosterHandler::onContactGroupAdded(const QString& group)
 
     QMap<QString, QVariant> cData({
         {"name", contact->getName()},
-        {"state", QVariant::fromValue(contact->getSubscriptionState())}
+        {"state", QVariant::fromValue(contact->getSubscriptionState())},
+#if (QXMPP_VERSION) >= QT_VERSION_CHECK(1, 5, 0)
+        {"trust", QVariant::fromValue(acc->th->getSummary(contact->jid))},
+#endif
+        {"encryption", QVariant::fromValue(contact->encryption())}
     });
     addToGroup(contact->jid, group);
     emit acc->addContact(contact->jid, group, cData);
 }
 
-void Core::RosterHandler::onContactGroupRemoved(const QString& group)
-{
+void Core::RosterHandler::onContactGroupRemoved(const QString& group) {
     Contact* contact = static_cast<Contact*>(sender());
     if (contact->groupsCount() == 0) {
         // not sure i need to handle it here, the situation with grouped and ungrouped contacts handled on the client anyway
@@ -268,26 +239,26 @@ void Core::RosterHandler::onContactGroupRemoved(const QString& group)
     removeFromGroup(contact->jid, group);
 }
 
-void Core::RosterHandler::onContactNameChanged(const QString& cname)
-{
-    Contact* contact = static_cast<Contact*>(sender());
-    QMap<QString, QVariant> cData({
-        {"name", cname},
-    });
-    emit acc->changeContact(contact->jid, cData);
+void Core::RosterHandler::onContactNameChanged(const QString& cname) {
+    RosterItem* contact = static_cast<RosterItem*>(sender());
+    emit acc->changeContact(contact->jid, {{"name", cname}});
 }
 
-void Core::RosterHandler::onContactSubscriptionStateChanged(Shared::SubscriptionState cstate)
-{
-    Contact* contact = static_cast<Contact*>(sender());
-    QMap<QString, QVariant> cData({
-        {"state", QVariant::fromValue(cstate)},
-    });
-    emit acc->changeContact(contact->jid, cData);
+void Core::RosterHandler::onContactEncryptionChanged(Shared::EncryptionProtocol value) {
+    RosterItem* contact = static_cast<RosterItem*>(sender());
+    emit acc->changeContact(contact->jid, {{"encryption", QVariant::fromValue(value)}});
 }
 
-void Core::RosterHandler::addToGroup(const QString& jid, const QString& group)
-{
+void Core::RosterHandler::onContactSubscriptionStateChanged(Shared::SubscriptionState cstate) {
+    Contact* contact = static_cast<Contact*>(sender());
+    emit acc->changeContact(contact->jid, {{"state", QVariant::fromValue(cstate)}});
+}
+
+void Core::RosterHandler::onTrustChanged(const QString& jid, const Shared::TrustSummary& trust) {
+    emit acc->changeContact(jid, {{"trust", QVariant::fromValue(trust)}});
+}
+
+void Core::RosterHandler::addToGroup(const QString& jid, const QString& group) {
     std::map<QString, std::set<QString>>::iterator gItr = groups.find(group);
     if (gItr == groups.end()) {
         gItr = groups.insert(std::make_pair(group, std::set<QString>())).first;
@@ -296,8 +267,7 @@ void Core::RosterHandler::addToGroup(const QString& jid, const QString& group)
     gItr->second.insert(jid.toLower());
 }
 
-void Core::RosterHandler::removeFromGroup(const QString& jid, const QString& group)
-{
+void Core::RosterHandler::removeFromGroup(const QString& jid, const QString& group) {
     QSet<QString> toRemove;
     std::map<QString, std::set<QString>>::iterator itr = groups.find(group);
     if (itr == groups.end()) {
@@ -315,58 +285,53 @@ void Core::RosterHandler::removeFromGroup(const QString& jid, const QString& gro
     }
 }
 
-Core::RosterItem * Core::RosterHandler::getRosterItem(const QString& jid)
-{
-    RosterItem* item = 0;
+Core::RosterItem* Core::RosterHandler::getRosterItem(const QString& jid) {
+    RosterItem* item = nullptr;
     QString lcJid = jid.toLower();
     std::map<QString, Contact*>::const_iterator citr = contacts.find(lcJid);
     if (citr != contacts.end()) {
         item = citr->second;
     } else {
         std::map<QString, Conference*>::const_iterator coitr = conferences.find(lcJid);
-        if (coitr != conferences.end()) {
+        if (coitr != conferences.end())
             item = coitr->second;
     }
-    }
     return item;
 }
 
-Core::Conference * Core::RosterHandler::getConference(const QString& jid)
-{
+Core::Conference* Core::RosterHandler::getConference(const QString& jid) {
     Conference* item = 0;
     std::map<QString, Conference*>::const_iterator coitr = conferences.find(jid.toLower());
-    if (coitr != conferences.end()) {
+    if (coitr != conferences.end())
         item = coitr->second;
-    }
+
     return item;
 }
 
-Core::Contact * Core::RosterHandler::getContact(const QString& jid)
-{
+Core::Contact* Core::RosterHandler::getContact(const QString& jid) {
     Contact* item = 0;
     std::map<QString, Contact*>::const_iterator citr = contacts.find(jid.toLower());
-    if (citr != contacts.end()) {
+    if (citr != contacts.end())
         item = citr->second;
-    }
+
     return item;
 }
 
-Core::Contact * Core::RosterHandler::addOutOfRosterContact(const QString& jid)
-{
+Core::Contact* Core::RosterHandler::addOutOfRosterContact(const QString& jid) {
     QString lcJid = jid.toLower();
     Contact* cnt = new Contact(lcJid, acc->name);
     contacts.insert(std::make_pair(lcJid, cnt));
     outOfRosterContacts.insert(lcJid);
     cnt->setSubscriptionState(Shared::SubscriptionState::unknown);
     emit acc->addContact(lcJid, "", QMap<QString, QVariant>({
-        {"state", QVariant::fromValue(Shared::SubscriptionState::unknown)}
+        {"state", QVariant::fromValue(Shared::SubscriptionState::unknown)},
+        {"encryption", QVariant::fromValue(Shared::EncryptionProtocol::none)}
     }));
     handleNewContact(cnt);
     return cnt;
 }
 
-void Core::RosterHandler::onRosterItemChanged(const QString& bareJid)
-{
+void Core::RosterHandler::onRosterItemChanged(const QString& bareJid) {
     QString lcJid = bareJid.toLower();
     std::map<QString, Contact*>::const_iterator itr = contacts.find(lcJid);
     if (itr == contacts.end()) {
@@ -383,8 +348,7 @@ void Core::RosterHandler::onRosterItemChanged(const QString& bareJid)
     contact->setName(re.name());
 }
 
-void Core::RosterHandler::onRosterItemRemoved(const QString& bareJid)
-{
+void Core::RosterHandler::onRosterItemRemoved(const QString& bareJid) {
     QString lcJid = bareJid.toLower();
     std::map<QString, Contact*>::const_iterator itr = contacts.find(lcJid);
     if (itr == contacts.end()) {
@@ -394,22 +358,20 @@ void Core::RosterHandler::onRosterItemRemoved(const QString& bareJid)
     Contact* contact = itr->second;
     contacts.erase(itr);
     QSet<QString> cGroups = contact->getGroups();
-    for (QSet<QString>::const_iterator itr = cGroups.begin(), end = cGroups.end(); itr != end; ++itr) {
-        removeFromGroup(lcJid, *itr);
-    }
+    for (const QString& group : cGroups)
+        removeFromGroup(lcJid, group);
+
     emit acc->removeContact(lcJid);
     
     contact->deleteLater();
 }
 
-void Core::RosterHandler::onMucRoomAdded(QXmppMucRoom* room)
-{
+void Core::RosterHandler::onMucRoomAdded(QXmppMucRoom* room) {
     qDebug()    << "room" << room->jid() << "added with name" << room->name() 
                 << ", account" << acc->getName() << "joined:" << room->isJoined(); 
 }
 
-void Core::RosterHandler::bookmarksReceived(const QXmppBookmarkSet& bookmarks)
-{
+void Core::RosterHandler::bookmarksReceived(const QXmppBookmarkSet& bookmarks) {
     QList<QXmppBookmarkConference> confs = bookmarks.conferences();
     for (QList<QXmppBookmarkConference>::const_iterator itr = confs.begin(), end = confs.end(); itr != end; ++itr) {
         const QXmppBookmarkConference& c = *itr;
@@ -419,54 +381,42 @@ void Core::RosterHandler::bookmarksReceived(const QXmppBookmarkSet& bookmarks)
         if (cItr == conferences.end()) {
             addNewRoom(jid, c.nickName(), c.name(), c.autoJoin());
         } else {
-            if (c.autoJoin()) {
+            if (c.autoJoin())
                 cItr->second->setJoined(true);
-            } else {
+            else
                 cItr->second->setAutoJoin(false);
         }
     }
 }
-}
 
-void Core::RosterHandler::onMucJoinedChanged(bool joined)
-{
+void Core::RosterHandler::onMucJoinedChanged(bool joined){
     Conference* room = static_cast<Conference*>(sender());
-    emit acc->changeRoom(room->jid, {
-        {"joined", joined}
-    });
+    emit acc->changeRoom(room->jid, {{"joined", joined}});
 }
 
-void Core::RosterHandler::onMucAutoJoinChanged(bool autoJoin)
-{
+void Core::RosterHandler::onMucAutoJoinChanged(bool autoJoin) {
     storeConferences();
     Conference* room = static_cast<Conference*>(sender());
-    emit acc->changeRoom(room->jid, {
-        {"autoJoin", autoJoin}
-    });
+    emit acc->changeRoom(room->jid, {{"autoJoin", autoJoin}});
 }
 
-void Core::RosterHandler::onMucNickNameChanged(const QString& nickName)
-{
+void Core::RosterHandler::onMucNickNameChanged(const QString& nickName){
     storeConferences();
     Conference* room = static_cast<Conference*>(sender());
-    emit acc->changeRoom(room->jid, {
-        {"nick", nickName}
-    });
+    emit acc->changeRoom(room->jid, {{"nick", nickName}});
 }
 
-Shared::SubscriptionState Core::RosterHandler::castSubscriptionState(QXmppRosterIq::Item::SubscriptionType qs)
-{
+Shared::SubscriptionState Core::RosterHandler::castSubscriptionState(QXmppRosterIq::Item::SubscriptionType qs){
     Shared::SubscriptionState state;
-    if (qs == QXmppRosterIq::Item::NotSet) {
+    if (qs == QXmppRosterIq::Item::NotSet)
         state = Shared::SubscriptionState::unknown;
-    } else {
+    else
         state = static_cast<Shared::SubscriptionState>(qs);
-    }
+
     return state;
 }
 
-void Core::RosterHandler::storeConferences()
-{
+void Core::RosterHandler::storeConferences() {
     QXmppBookmarkSet bms = acc->bm->bookmarks();
     QList<QXmppBookmarkConference> confs;
     for (std::map<QString, Conference*>::const_iterator itr = conferences.begin(), end = conferences.end(); itr != end; ++itr) {
@@ -482,8 +432,7 @@ void Core::RosterHandler::storeConferences()
     acc->bm->setBookmarks(bms);
 }
 
-void Core::RosterHandler::clearConferences()
-{
+void Core::RosterHandler::clearConferences() {
     for (std::map<QString, Conference*>::const_iterator itr = conferences.begin(), end = conferences.end(); itr != end; itr++) {
         itr->second->deleteLater();
         emit acc->removeRoom(itr->first);
@@ -491,21 +440,20 @@ void Core::RosterHandler::clearConferences()
     conferences.clear();
 }
 
-void Core::RosterHandler::removeRoomRequest(const QString& jid)
-{
+void Core::RosterHandler::removeRoomRequest(const QString& jid) {
     QString lcJid = jid.toLower();
     std::map<QString, Conference*>::const_iterator itr = conferences.find(lcJid);
-    if (itr == conferences.end()) {
+    if (itr == conferences.end())
         qDebug() << "An attempt to remove non existing room" << lcJid << "from account" << acc->name << ", skipping";
-    }
+
     itr->second->deleteLater();
     conferences.erase(itr);
     emit acc->removeRoom(lcJid);
     storeConferences();
 }
 
-void Core::RosterHandler::addRoomRequest(const QString& jid, const QString& nick, const QString& password, bool autoJoin)
-{
+void Core::RosterHandler::addRoomRequest(const QString& jid, const QString& nick, const QString& password, bool autoJoin) {
+    SHARED_UNUSED(password);
     QString lcJid = jid.toLower();
     std::map<QString, Conference*>::const_iterator cItr = conferences.find(lcJid);
     if (cItr == conferences.end()) {
@@ -516,8 +464,7 @@ void Core::RosterHandler::addRoomRequest(const QString& jid, const QString& nick
     }
 }
 
-void Core::RosterHandler::addContactToGroupRequest(const QString& jid, const QString& groupName)
-{
+void Core::RosterHandler::addContactToGroupRequest(const QString& jid, const QString& groupName) {
     QString lcJid = jid.toLower();
     std::map<QString, Contact*>::const_iterator itr = contacts.find(lcJid);
     if (itr == contacts.end()) {
@@ -541,14 +488,15 @@ void Core::RosterHandler::addContactToGroupRequest(const QString& jid, const QSt
     }
 }
 
-void Core::RosterHandler::removeContactFromGroupRequest(const QString& jid, const QString& groupName)
-{
+void Core::RosterHandler::removeContactFromGroupRequest(const QString& jid, const QString& groupName) {
     QString lcJid = jid.toLower();
     std::map<QString, Contact*>::const_iterator itr = contacts.find(lcJid);
     if (itr == contacts.end()) {
         qDebug()    << "An attempt to remove non existing contact" << lcJid << "of account" 
                     << acc->name << "from the group" << groupName << ", skipping";
-    } else {
+        return;
+    }
+
     QXmppRosterIq::Item item = acc->rm->getRosterEntry(lcJid);
     QSet<QString> groups = item.groups();
     QSet<QString>::const_iterator gItr = groups.find(groupName);
@@ -565,21 +513,18 @@ void Core::RosterHandler::removeContactFromGroupRequest(const QString& jid, cons
                     << acc->name << "from the group" << groupName << "but it's not in that group, skipping";
     }
 }
-}
 
-void Core::RosterHandler::onContactAvatarChanged(Shared::Avatar type, const QString& path)
-{
+void Core::RosterHandler::onContactAvatarChanged(Shared::Avatar type, const QString& path) {
     RosterItem* item = static_cast<RosterItem*>(sender());
     QMap<QString, QVariant> cData({
-        {"avatarState", static_cast<uint>(type)},
+        {"avatarState", QVariant::fromValue(type)},
         {"avatarPath", path}
     });
     
     emit acc->changeContact(item->jid, cData);
 }
 
-void Core::RosterHandler::handleOffline()
-{
+void Core::RosterHandler::handleOffline() {
     for (const std::pair<const QString, Conference*>& pair : conferences) {
         pair.second->clearArchiveRequests();
         pair.second->downgradeDatabaseState();
@@ -589,3 +534,12 @@ void Core::RosterHandler::handleOffline()
         pair.second->downgradeDatabaseState();
     }
 }
+
+void Core::RosterHandler::onPepSupportedChanged(Shared::Support support) {
+    if (support == Shared::Support::supported) {
+        for (const std::pair<const QString, Contact*>& pair : contacts) {
+            if (pair.second->getPepSupport() == Shared::Support::unknown)
+                acc->dm->requestInfo(pair.first);
+        }
+    }
+}

core/handlers/rosterhandler.h

@@ -16,8 +16,7 @@
  * along with this program.  If not, see <http://www.gnu.org/licenses/>.
  */
 
-#ifndef CORE_ROSTERHANDLER_H
-#define CORE_ROSTERHANDLER_H
+#pragma once
 
 #include <QObject>
 #include <QSet>
@@ -27,22 +26,24 @@
 #include <list>
 #include <map>
 #include <set>
+#include <optional>
 
 #include <QXmppBookmarkSet.h>
 #include <QXmppMucManager.h>
 #include <QXmppRosterIq.h>
 
+#include <shared/enums.h>
 #include <shared/message.h>
+#include <shared/trustsummary.h>
+
 #include <core/contact.h>
 #include <core/conference.h>
+#include <core/delayManager/manager.h>
 
 namespace Core {
-
-    
 class Account;
     
-class RosterHandler : public QObject
-{
+class RosterHandler : public QObject {
     Q_OBJECT
 public:
     RosterHandler(Account* account);
@@ -65,11 +66,15 @@ public:
     void storeConferences();
     void clearConferences();
 
+    void initialize();
+    void clear();
+    
 private slots:
     void onRosterReceived();
     void onRosterItemAdded(const QString& bareJid);
     void onRosterItemChanged(const QString& bareJid);
     void onRosterItemRemoved(const QString& bareJid);
+    void onTrustChanged(const QString& jid, const Shared::TrustSummary& trust);
     
     void onMucRoomAdded(QXmppMucRoom* room);
     void onMucJoinedChanged(bool joined);
@@ -87,6 +92,8 @@ private slots:
     void onContactNameChanged(const QString& name);
     void onContactSubscriptionStateChanged(Shared::SubscriptionState state);
     void onContactAvatarChanged(Shared::Avatar, const QString& path);
+    void onContactEncryptionChanged(Shared::EncryptionProtocol value);
+    void onPepSupportedChanged(Shared::Support support);
     
 private:
     void addNewRoom(const QString& jid, const QString& nick, const QString& roomName, bool autoJoin);
@@ -96,7 +103,6 @@ private:
     void handleNewRosterItem(Core::RosterItem* contact);
     void handleNewContact(Core::Contact* contact);
     void handleNewConference(Core::Conference* contact);
-    void careAboutAvatar(Core::RosterItem* item, QMap<QString, QVariant>& data);
     
     static Shared::SubscriptionState castSubscriptionState(QXmppRosterIq::Item::SubscriptionType qs);
     
@@ -110,5 +116,3 @@ private:
 };
 
 }
-
-#endif // CORE_ROSTERHANDLER_H

core/handlers/trusthandler.cpp

@@ -0,0 +1,463 @@
+// Squawk messenger. 
+// Copyright (C) 2019  Yury Gubich <blue@macaw.me>
+// 
+// This program is free software: you can redistribute it and/or modify
+// it under the terms of the GNU General Public License as published by
+// the Free Software Foundation, either version 3 of the License, or
+// (at your option) any later version.
+// 
+// This program is distributed in the hope that it will be useful,
+// but WITHOUT ANY WARRANTY; without even the implied warranty of
+// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+// GNU General Public License for more details.
+// 
+// You should have received a copy of the GNU General Public License
+// along with this program.  If not, see <http://www.gnu.org/licenses/>.
+
+#include "trusthandler.h"
+#include "core/account.h"
+#include "core/adapterfunctions.h"
+
+Core::TrustHandler::TrustHandler(Account* account):
+    QObject(),
+    QXmppTrustStorage(),
+    acc(account),
+    db(acc->getName() + "/trust"),
+    protocols(db.createDirectory() + "/protocols"),
+    securityPolicies(db.addCache<QString, uint8_t>("securityPolicies")),
+    ownKeys(db.addCache<QString, QByteArray>("ownKeys")),
+    keysByProtocol()
+{
+    if (!protocols.open(QIODevice::ReadWrite | QIODevice::Text))                //never supposed to happen since I have just created a directory;
+        throw LMDBAL::Directory(protocols.fileName().toStdString());
+
+    QTextStream in(&protocols);
+    while(!in.atEnd()) {
+        QString protocol = in.readLine();
+
+        if (protocol.size() > 1) {  //I'm afraid of reading some nonsence like separately standing \n or EF or BOM, so... let it be at least 2 chars long
+            KeyCache* cache = db.addCache<QString, Keys>(protocol.toStdString());
+            keysByProtocol.insert(std::make_pair(protocol, cache));
+        }
+    }
+
+    protocols.close();
+    db.open();
+}
+
+Core::TrustHandler::~TrustHandler() {
+    protocols.close();
+    db.close();
+}
+
+Core::TrustHandler::KeyCache * Core::TrustHandler::getCache(const QString& encryption) {
+    std::map<QString, KeyCache*>::iterator itr = keysByProtocol.find(encryption);
+    if (itr == keysByProtocol.end())
+        return createNewCache(encryption);
+    else
+        return itr->second;
+}
+
+Core::TrustHandler::KeyCache * Core::TrustHandler::createNewCache(const QString& encryption) {
+    db.close();
+    KeyCache* cache = db.addCache<QString, Keys>(encryption.toStdString());
+    keysByProtocol.insert(std::make_pair(encryption, cache));
+
+    if (!protocols.open(QIODevice::WriteOnly | QIODevice::Append | QIODevice::Text))
+        throw LMDBAL::Directory(protocols.fileName().toStdString());
+
+    QTextStream out(&protocols);
+    out << encryption + "\n";
+    protocols.close();
+
+    db.open();
+    return cache;
+}
+
+QXmppTask<void> Core::TrustHandler::resetAll(const QString& encryption) {
+    securityPolicies->removeRecord(encryption);
+    ownKeys->removeRecord(encryption);
+    std::map<QString, KeyCache*>::const_iterator itr = keysByProtocol.find(encryption);
+    if (itr == keysByProtocol.end())
+        return Core::makeReadyTask();
+
+    LMDBAL::WriteTransaction txn = db.beginTransaction();
+    KeyCache* cache = itr->second;
+    std::map<QString, Keys> keys = cache->readAll(txn);
+    cache->drop(txn);
+
+    txn.commit();
+    for (const std::pair<const QString, Keys>& pair : keys) {
+        bool empty = true;
+        for (const std::pair<const QByteArray, Shared::TrustLevel>& trust : pair.second) {
+            if (trust.second != Shared::TrustLevel::undecided) {
+                empty = false;
+                break;
+            }
+        }
+        if (!empty)
+            emit trustLevelsChanged(pair.first, getSummary(pair.first));
+    }
+
+    return Core::makeReadyTask();
+}
+
+QXmppTask<QXmpp::TrustLevel> Core::TrustHandler::trustLevel(
+    const QString& encryption,
+    const QString& keyOwnerJid,
+    const QByteArray& keyId
+) {
+    KeyCache* cache = getCache(encryption);
+    Shared::TrustLevel level = Shared::TrustLevel::undecided;
+    try {
+        Keys map = cache->getRecord(keyOwnerJid);
+        Keys::const_iterator itr = map.find(keyId);
+        if (itr != map.end())
+            level = itr->second;
+    } catch (const LMDBAL::NotFound& e) {}
+    return Core::makeReadyTask(std::move(convert(level)));
+}
+
+QXmppTask<QHash<QString, QMultiHash<QString, QByteArray>>> Core::TrustHandler::setTrustLevel(
+    const QString& encryption,
+    const QList<QString>& keyOwnerJids,
+    QXmpp::TrustLevel oldTrustLevel,
+    QXmpp::TrustLevel newTrustLevel
+) {
+    QHash<QString, QMultiHash<QString, QByteArray>> modifiedKeys;
+    Shared::TrustLevel oldLevel = convert(oldTrustLevel);
+    Shared::TrustLevel newLevel = convert(newTrustLevel);
+    std::set<QString> modifiedJids;
+    KeyCache* cache = getCache(encryption);
+
+    LMDBAL::WriteTransaction txn = db.beginTransaction();
+    for (const QString& keyOwnerJid : keyOwnerJids) {
+        Keys map = cache->getRecord(keyOwnerJid, txn);
+        uint count = 0;
+        for (std::pair<const QByteArray, Shared::TrustLevel>& pair : map) {
+            Shared::TrustLevel& current = pair.second;
+            if (current == oldLevel) {
+                current = newLevel;
+                modifiedKeys[encryption].insert(keyOwnerJid, pair.first);
+                modifiedJids.insert(keyOwnerJid);
+                ++count;
+            }
+        }
+        if (count > 0)
+            cache->changeRecord(keyOwnerJid, map, txn);
+    }
+    txn.commit();
+    for (const QString& jid : modifiedJids)
+        emit trustLevelsChanged(jid, getSummary(jid));
+
+    return Core::makeReadyTask(std::move(modifiedKeys));
+}
+
+QXmppTask<QHash<QString, QMultiHash<QString, QByteArray>>> Core::TrustHandler::setTrustLevel(
+    const QString& encryption,
+    const QMultiHash<QString, QByteArray>& keyIds,
+    QXmpp::TrustLevel trustLevel
+) {
+    QHash<QString, QMultiHash<QString, QByteArray>> modifiedKeys;
+    Shared::TrustLevel level = convert(trustLevel);
+    std::set<QString> modifiedJids;
+    KeyCache* cache = getCache(encryption);
+
+    LMDBAL::WriteTransaction txn = db.beginTransaction();
+    for (MultySB::const_iterator itr = keyIds.begin(), end = keyIds.end(); itr != end; ++itr) {
+        const QString& keyOwnerJid = itr.key();
+        const QByteArray& keyId = itr.value();
+        try {
+            Keys map = cache->getRecord(keyOwnerJid, txn);
+            std::pair<Keys::iterator, bool> result = map.insert(std::make_pair(keyId, level));
+            bool changed = result.second;
+            if (!changed && result.first->second != level) {
+                result.first->second = level;
+                changed = true;
+            }
+            if (changed) {
+                modifiedKeys[encryption].insert(keyOwnerJid, keyId);
+                modifiedJids.insert(keyOwnerJid);
+                cache->changeRecord(keyOwnerJid, map, txn);
+            }
+        } catch (const LMDBAL::NotFound& e) {
+            Keys map({{keyId, level}});
+            modifiedKeys[encryption].insert(keyOwnerJid, keyId);
+            modifiedJids.insert(keyOwnerJid);
+            cache->addRecord(keyOwnerJid, map, txn);
+        }
+    }
+    txn.commit();
+
+    for (const QString& jid : modifiedJids)
+        emit trustLevelsChanged(jid, getSummary(jid));
+
+    return Core::makeReadyTask(std::move(modifiedKeys));
+}
+
+QXmppTask<bool> Core::TrustHandler::hasKey(
+    const QString& encryption,
+    const QString& keyOwnerJid,
+    QXmpp::TrustLevels trustLevels
+) {
+    KeyCache* cache = getCache(encryption);
+    bool found = false;
+    try {
+        Keys map = cache->getRecord(keyOwnerJid);
+        for (const std::pair<const QByteArray, Shared::TrustLevel>& pair : map) {
+            if (trustLevels.testFlag(convert(pair.second))) {
+                found = true;
+                break;
+            }
+        }
+    } catch (const LMDBAL::NotFound& e) {}
+    return Core::makeReadyTask(std::move(found));
+}
+
+QXmppTask<QHash<QString, QHash<QByteArray, QXmpp::TrustLevel>>> Core::TrustHandler::keys(
+    const QString& encryption,
+    const QList<QString>& keyOwnerJids,
+    QXmpp::TrustLevels trustLevels
+) {
+    HSHBTL res;
+
+    KeyCache* cache = getCache(encryption);
+    for (const QString& keyOwnerJid : keyOwnerJids) {
+        try {
+            Keys map = cache->getRecord(keyOwnerJid);
+            QHash<QByteArray, QXmpp::TrustLevel>& pRes = res[keyOwnerJid];
+            for (const std::pair<const QByteArray, Shared::TrustLevel>& pair : map) {
+                QXmpp::TrustLevel level = convert(pair.second);
+                if (!trustLevels || trustLevels.testFlag(level)) {
+                    pRes.insert(pair.first, level);
+                }
+            }
+        } catch (const LMDBAL::NotFound& e) {}
+    }
+    return Core::makeReadyTask(std::move(res));
+}
+
+QXmppTask<QHash<QXmpp::TrustLevel, QMultiHash<QString, QByteArray>>> Core::TrustHandler::keys(
+    const QString& encryption,
+    QXmpp::TrustLevels trustLevels
+) {
+    QHash<TL, MultySB> res;
+    KeyCache* cache = getCache(encryption);
+    std::map<QString, Keys> storage = cache->readAll();
+    for (const std::pair<const QString, Keys>& value : storage) {
+        for (const std::pair<const QByteArray, Shared::TrustLevel>& pair : value.second) {
+            QXmpp::TrustLevel level = convert(pair.second);
+            if (!trustLevels || trustLevels.testFlag(level))
+                res[level].insert(value.first, pair.first);
+        }
+    }
+    return Core::makeReadyTask(std::move(res));
+}
+
+QXmppTask<void> Core::TrustHandler::removeKeys(const QString& encryption) {
+    std::map<QString, KeyCache*>::const_iterator itr = keysByProtocol.find(encryption);
+    if (itr == keysByProtocol.end())
+        return Core::makeReadyTask();
+
+    LMDBAL::WriteTransaction txn = db.beginTransaction();
+    KeyCache* cache = itr->second;
+    std::map<QString, Keys> keys = cache->readAll(txn);
+    cache->drop(txn);
+    txn.commit();
+
+    for (const std::pair<const QString, Keys>& pair : keys) {
+        bool empty = true;
+        for (const std::pair<const QByteArray, Shared::TrustLevel>& trust : pair.second) {
+            if (trust.second != Shared::TrustLevel::undecided) {
+                empty = false;
+                break;
+            }
+        }
+        if (!empty)
+            emit trustLevelsChanged(pair.first, getSummary(pair.first));
+    }
+
+    return Core::makeReadyTask();
+}
+
+QXmppTask<void> Core::TrustHandler::removeKeys(const QString& encryption, const QString& keyOwnerJid) {
+    std::map<QString, KeyCache*>::const_iterator itr = keysByProtocol.find(encryption);
+    if (itr == keysByProtocol.end())
+        return Core::makeReadyTask();
+
+    KeyCache* cache = itr->second;
+    try {
+        cache->removeRecord(keyOwnerJid);
+        emit trustLevelsChanged(keyOwnerJid, getSummary(keyOwnerJid));      //TODO there is a probability of notification without the actial change
+    } catch (const LMDBAL::NotFound& e) {}                                  //if the movin entry was empty or if it consisted of Undecided keys
+
+
+    return Core::makeReadyTask();
+}
+
+QXmppTask<void> Core::TrustHandler::removeKeys(const QString& encryption, const QList<QByteArray>& keyIds) {
+    std::set<QByteArray> set;
+    for (const QByteArray& keyId : keyIds)
+        set.insert(keyId);
+
+    LMDBAL::WriteTransaction txn = db.beginTransaction();
+    KeyCache* cache = getCache(encryption);
+    std::map<QString, Keys> data = cache->readAll(txn);
+    std::set<QString> modifiedJids;
+
+    for (std::map<QString, Keys>::iterator cItr = data.begin(), cEnd = data.end(); cItr != cEnd; /*no increment*/) {
+        Keys& byOwner = cItr->second;
+        for (Keys::const_iterator itr = byOwner.begin(), end = byOwner.end(); itr != end; /*no increment*/) {
+            const QByteArray& keyId = itr->first;
+            if (set.erase(keyId)) {
+                byOwner.erase(itr++);
+                modifiedJids.insert(cItr->first);
+            } else
+                ++itr;
+        }
+        if (byOwner.size() > 0)
+            data.erase(cItr++);
+        else
+            ++cItr;
+    }
+    if (modifiedJids.size() > 0)
+        cache->replaceAll(data, txn);
+
+    txn.commit();
+    for (const QString& jid : modifiedJids)
+        emit trustLevelsChanged(jid, getSummary(jid));
+
+    return Core::makeReadyTask();
+}
+
+QXmppTask<void> Core::TrustHandler::addKeys(
+    const QString& encryption,
+    const QString& keyOwnerJid,
+    const QList<QByteArray>& keyIds,
+    QXmpp::TrustLevel trustLevel
+) {
+    KeyCache* cache = getCache(encryption);
+    Shared::TrustLevel level = convert(trustLevel);
+    Keys data;
+    bool had = false;
+    LMDBAL::WriteTransaction txn = db.beginTransaction();
+    try {
+        data = cache->getRecord(keyOwnerJid, txn);
+        had = true;
+    } catch (const LMDBAL::NotFound& e) {}
+    for (const QByteArray& keyId : keyIds) {
+        std::pair<Keys::iterator, bool> result = data.insert(std::make_pair(keyId, level));
+        if (!result.second)
+            result.first->second = level;
+    }
+
+    if (had)
+        cache->changeRecord(keyOwnerJid, data, txn);
+    else
+        cache->addRecord(keyOwnerJid, data, txn);
+
+    txn.commit();
+    emit trustLevelsChanged(keyOwnerJid, getSummary(keyOwnerJid));
+
+    return Core::makeReadyTask();
+}
+
+QXmppTask<QByteArray> Core::TrustHandler::ownKey(const QString& encryption) {
+    QByteArray res;
+    try {
+        res = ownKeys->getRecord(encryption);
+    } catch (const LMDBAL::NotFound& e) {}
+    return Core::makeReadyTask(std::move(res));
+}
+
+QXmppTask<void> Core::TrustHandler::resetOwnKey(const QString& encryption) {
+    try {
+        ownKeys->removeRecord(encryption);
+    } catch (const LMDBAL::NotFound& e) {}
+
+    return Core::makeReadyTask();
+}
+
+QXmppTask<void> Core::TrustHandler::setOwnKey(const QString& encryption, const QByteArray& keyId) {
+    ownKeys->forceRecord(encryption, keyId);
+    return Core::makeReadyTask();
+}
+
+QXmppTask<QXmpp::TrustSecurityPolicy> Core::TrustHandler::securityPolicy(const QString& encryption) {
+    QXmpp::TrustSecurityPolicy res;
+    try {
+        res = static_cast<QXmpp::TrustSecurityPolicy>(securityPolicies->getRecord(encryption));
+    } catch (const LMDBAL::NotFound& e) {}
+    return Core::makeReadyTask(std::move(res));
+}
+
+QXmppTask<void> Core::TrustHandler::resetSecurityPolicy(const QString& encryption) {
+    try {
+        securityPolicies->removeRecord(encryption);
+    } catch (const LMDBAL::NotFound& e) {}
+    return Core::makeReadyTask();
+}
+
+QXmppTask<void> Core::TrustHandler::setSecurityPolicy(
+    const QString& encryption,
+    QXmpp::TrustSecurityPolicy securityPolicy)
+{
+    uint8_t pol = securityPolicy;
+    securityPolicies->forceRecord(encryption, pol);
+
+    return Core::makeReadyTask();
+}
+
+Core::TrustHandler::Keys Core::TrustHandler::getKeys(Shared::EncryptionProtocol protocol, const QString& jid) const {
+    const QString& prt = Shared::TrustSummary::protocolKeys.at(protocol);
+    std::map<QString, KeyCache*>::const_iterator itr = keysByProtocol.find(prt);
+    if (itr != keysByProtocol.end()) {
+        try {
+            Keys map = itr->second->getRecord(jid);
+            return map;
+        } catch (const LMDBAL::NotFound& e) {
+            return Keys();
+        }
+    } else {
+        return Keys();
+    }
+}
+
+Shared::TrustSummary Core::TrustHandler::getSummary(const QString& jid) const {
+    Shared::TrustSummary result;
+    for (const std::pair<const QString, KeyCache*>& pair : keysByProtocol) {
+        try {
+            Keys keys = pair.second->getRecord(jid);
+            Shared::EncryptionProtocol protocol = Shared::TrustSummary::protocolValues.at(pair.first);
+            for (const std::pair<const QByteArray, Shared::TrustLevel>& trust : keys)
+                result.increment(protocol, trust.second);
+
+        } catch (const LMDBAL::NotFound& e) {}
+    }
+
+    return result;
+}
+
+Shared::TrustLevel Core::TrustHandler::convert(Core::TrustHandler::TL level) {
+    switch (level) {
+        case QXmpp::TrustLevel::Undecided: return Shared::TrustLevel::undecided;
+        case QXmpp::TrustLevel::AutomaticallyDistrusted: return Shared::TrustLevel::automaticallyDistrusted;
+        case QXmpp::TrustLevel::ManuallyDistrusted: return Shared::TrustLevel::manuallyDistrusted;
+        case QXmpp::TrustLevel::AutomaticallyTrusted: return Shared::TrustLevel::automaticallyTrusted;
+        case QXmpp::TrustLevel::ManuallyTrusted: return Shared::TrustLevel::manuallyTrusted;
+        case QXmpp::TrustLevel::Authenticated: return Shared::TrustLevel::authenticated;
+        default: throw 2413;                 //never supposed to get here, switch case if complete, this line is just to suppress a warning
+    }
+}
+
+Core::TrustHandler::TL Core::TrustHandler::convert(Shared::TrustLevel level) {
+    switch (level) {
+        case Shared::TrustLevel::undecided: return QXmpp::TrustLevel::Undecided;
+        case Shared::TrustLevel::automaticallyDistrusted: return QXmpp::TrustLevel::AutomaticallyDistrusted;
+        case Shared::TrustLevel::manuallyDistrusted: return QXmpp::TrustLevel::ManuallyDistrusted;
+        case Shared::TrustLevel::automaticallyTrusted: return QXmpp::TrustLevel::AutomaticallyTrusted;
+        case Shared::TrustLevel::manuallyTrusted: return QXmpp::TrustLevel::ManuallyTrusted;
+        case Shared::TrustLevel::authenticated: return QXmpp::TrustLevel::Authenticated;
+        default: throw 2413;                 //never supposed to get here, switch case if complete, this line is just to suppress a warning
+    }
+}

core/handlers/trusthandler.h

@@ -0,0 +1,89 @@
+// Squawk messenger. 
+// Copyright (C) 2019  Yury Gubich <blue@macaw.me>
+// 
+// This program is free software: you can redistribute it and/or modify
+// it under the terms of the GNU General Public License as published by
+// the Free Software Foundation, either version 3 of the License, or
+// (at your option) any later version.
+// 
+// This program is distributed in the hope that it will be useful,
+// but WITHOUT ANY WARRANTY; without even the implied warranty of
+// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+// GNU General Public License for more details.
+// 
+// You should have received a copy of the GNU General Public License
+// along with this program.  If not, see <http://www.gnu.org/licenses/>.
+
+#ifndef CORE_TRUSTHANDLER_H
+#define CORE_TRUSTHANDLER_H
+
+#include <shared/enums.h>
+#include <shared/trustsummary.h>
+
+#include <QXmppTrustStorage.h>
+#include <cache.h>
+
+namespace Core {
+class Account;
+
+class TrustHandler : public QObject, public QXmppTrustStorage {
+    Q_OBJECT
+public:
+    TrustHandler(Account* account);
+    ~TrustHandler();
+
+signals:
+    void trustLevelsChanged(const QString& jid, const Shared::TrustSummary& summary) const;
+
+public:
+    typedef QMultiHash<QString, QByteArray> MultySB;
+    typedef QHash<QString, MultySB> HashSM;
+    typedef const QList<QString>& CLSR;
+    typedef const QList<QByteArray>& CLBAR;
+    typedef const QString& CSR;
+    typedef QXmpp::TrustLevel TL;
+    typedef QHash<QString, QHash<QByteArray, TL>> HSHBTL;
+
+    typedef std::map<QByteArray, Shared::TrustLevel> Keys;
+    typedef LMDBAL::Cache<QString, Keys> KeyCache;
+
+    virtual QXmppTask<void> resetAll(CSR encryption) override;
+    virtual QXmppTask<TL> trustLevel(CSR encryption, CSR keyOwnerJid, const QByteArray& keyId) override;
+    virtual QXmppTask<HashSM> setTrustLevel(CSR encryption, CLSR keyOwnerJids, TL oldTrustLevel, TL newTrustLevel) override;
+    virtual QXmppTask<HashSM> setTrustLevel(CSR encryption, const MultySB& keyIds, TL trustLevel) override;
+    virtual QXmppTask<bool> hasKey(CSR encryption, CSR keyOwnerJid, QXmpp::TrustLevels trustLevels) override;
+    virtual QXmppTask<HSHBTL> keys(CSR encryption, CLSR keyOwnerJids, QXmpp::TrustLevels trustLevels) override;
+    virtual QXmppTask<QHash<TL, MultySB>> keys(CSR encryption, QXmpp::TrustLevels trustLevels) override;
+    virtual QXmppTask<void> removeKeys(CSR encryption) override;
+    virtual QXmppTask<void> removeKeys(CSR encryption, CSR keyOwnerJid) override;
+    virtual QXmppTask<void> removeKeys(CSR encryption, CLBAR keyIds) override;
+    virtual QXmppTask<void> addKeys(CSR encryption, CSR keyOwnerJid, CLBAR keyIds, TL trustLevel) override;
+    virtual QXmppTask<QByteArray> ownKey(CSR encryption) override;
+    virtual QXmppTask<void> resetOwnKey(CSR encryption) override;
+    virtual QXmppTask<void> setOwnKey(CSR encryption, const QByteArray& keyId) override;
+    virtual QXmppTask<QXmpp::TrustSecurityPolicy> securityPolicy(CSR encryption) override;
+    virtual QXmppTask<void> resetSecurityPolicy(CSR encryption) override;
+    virtual QXmppTask<void> setSecurityPolicy(const QString& encryption, QXmpp::TrustSecurityPolicy securityPolicy) override;
+
+    static TL convert(Shared::TrustLevel level);
+    static Shared::TrustLevel convert(TL level);
+
+    Keys getKeys(Shared::EncryptionProtocol protocol, const QString& jid) const;
+    Shared::TrustSummary getSummary(const QString& jid) const;
+
+private:
+    KeyCache* createNewCache(const QString& encryption);
+    KeyCache* getCache(const QString& encryption);
+
+private:
+    Account* acc;
+    LMDBAL::Base db;
+    QFile protocols;
+    LMDBAL::Cache<QString, uint8_t>* securityPolicies;
+    LMDBAL::Cache<QString, QByteArray>* ownKeys;
+    std::map<QString, KeyCache*> keysByProtocol;
+};
+
+}
+
+#endif // CORE_TRUSTHANDLER_H

core/handlers/vcardhandler.cpp

@@ -0,0 +1,270 @@
+// Squawk messenger. 
+// Copyright (C) 2019  Yury Gubich <blue@macaw.me>
+// 
+// This program is free software: you can redistribute it and/or modify
+// it under the terms of the GNU General Public License as published by
+// the Free Software Foundation, either version 3 of the License, or
+// (at your option) any later version.
+// 
+// This program is distributed in the hope that it will be useful,
+// but WITHOUT ANY WARRANTY; without even the implied warranty of
+// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+// GNU General Public License for more details.
+// 
+// You should have received a copy of the GNU General Public License
+// along with this program.  If not, see <http://www.gnu.org/licenses/>.
+
+#include "vcardhandler.h"
+#include "core/account.h"
+
+Core::VCardHandler::VCardHandler(Account* account):
+    QObject(),
+    acc(account),
+    avatarHash(),
+    avatarType()
+{
+    QString path(QStandardPaths::writableLocation(QStandardPaths::CacheLocation));
+    path += "/" + acc->name;
+    QDir dir(path);
+
+    if (!dir.exists()) {
+        bool res = dir.mkpath(path);
+        if (!res) {
+            qDebug() << "Couldn't create a cache directory for account" << acc->name;
+            throw 22;
+        }
+    }
+
+    QFile* avatar = new QFile(path + "/avatar.png");
+    QString type = "png";
+    if (!avatar->exists()) {
+        delete avatar;
+        avatar = new QFile(path + "/avatar.jpg");
+        type = "jpg";
+        if (!avatar->exists()) {
+            delete avatar;
+            avatar = new QFile(path + "/avatar.jpeg");
+            type = "jpeg";
+            if (!avatar->exists()) {
+                delete avatar;
+                avatar = new QFile(path + "/avatar.gif");
+                type = "gif";
+            }
+        }
+    }
+
+    if (avatar->exists()) {
+        if (avatar->open(QFile::ReadOnly)) {
+            QCryptographicHash sha1(QCryptographicHash::Sha1);
+            sha1.addData(avatar);
+            avatarHash = sha1.result();
+            avatarType = type;
+        }
+    }
+}
+
+Core::VCardHandler::~VCardHandler() {}
+
+void Core::VCardHandler::initialize() {
+    connect(acc->vm, &QXmppVCardManager::vCardReceived, this, &VCardHandler::onVCardReceived);
+    //for some reason it doesn't work, launching from common handler
+    //connect(acc->vm, &QXmppVCardManager::clientVCardReceived, this, &VCardHandler::onOwnVCardReceived);
+
+    if (avatarType.size() != 0) {
+        acc->presence.setVCardUpdateType(QXmppPresence::VCardUpdateValidPhoto);
+        acc->presence.setPhotoHash(avatarHash.toUtf8());
+    } else {
+        acc->presence.setVCardUpdateType(QXmppPresence::VCardUpdateNotReady);
+    }
+}
+
+void Core::VCardHandler::onVCardReceived(const QXmppVCardIq& card) {
+    QString id = card.from();
+    QStringList comps = id.split("/");
+    QString jid = comps.front().toLower();
+    QString resource("");
+    if (comps.size() > 1) {
+        resource = comps.back();
+    }
+    RosterItem* item = acc->rh->getRosterItem(jid);
+
+    if (item == nullptr) {
+        if (jid == acc->getBareJid())
+            onOwnVCardReceived(card);
+        else
+            qDebug() << "received vCard" << jid << "doesn't belong to any of known contacts or conferences, skipping";
+
+        return;
+    }
+
+    Shared::VCard vCard;
+    item->handleResponseVCard(card, resource, vCard);
+    acc->delay->receivedVCard(id, vCard);
+}
+
+void Core::VCardHandler::onOwnVCardReceived(const QXmppVCardIq& card) {
+    QByteArray ava = card.photo();
+    bool avaChanged = false;
+    QString path = QStandardPaths::writableLocation(QStandardPaths::CacheLocation) + "/" + acc->name + "/";
+    if (ava.size() > 0) {
+        QCryptographicHash sha1(QCryptographicHash::Sha1);
+        sha1.addData(ava);
+        QString newHash(sha1.result());
+        QMimeDatabase db;
+        QMimeType newType = db.mimeTypeForData(ava);
+        if (avatarType.size() > 0) {
+            if (avatarHash != newHash) {
+                QString oldPath = path + "avatar." + avatarType;
+                QFile oldAvatar(oldPath);
+                bool oldToRemove = false;
+                if (oldAvatar.exists()) {
+                    if (oldAvatar.rename(oldPath + ".bak")) {
+                        oldToRemove = true;
+                    } else {
+                        qDebug() << "Received new avatar for account" << acc->name << "but can't get rid of the old one, doing nothing";
+                    }
+                }
+                QFile newAvatar(path + "avatar." + newType.preferredSuffix());
+                if (newAvatar.open(QFile::WriteOnly)) {
+                    newAvatar.write(ava);
+                    newAvatar.close();
+                    avatarHash = newHash;
+                    avatarType = newType.preferredSuffix();
+                    avaChanged = true;
+                } else {
+                    qDebug() << "Received new avatar for account" << acc->name << "but can't save it";
+                    if (oldToRemove) {
+                        qDebug() << "rolling back to the old avatar";
+                        if (!oldAvatar.rename(oldPath)) {
+                            qDebug() << "Couldn't roll back to the old avatar in account" << acc->name;
+                        }
+                    }
+                }
+            }
+        } else {
+            QFile newAvatar(path + "avatar." + newType.preferredSuffix());
+            if (newAvatar.open(QFile::WriteOnly)) {
+                newAvatar.write(ava);
+                newAvatar.close();
+                avatarHash = newHash;
+                avatarType = newType.preferredSuffix();
+                avaChanged = true;
+            } else {
+                qDebug() << "Received new avatar for account" << acc->name << "but can't save it";
+            }
+        }
+    } else {
+        if (avatarType.size() > 0) {
+            QFile oldAvatar(path + "avatar." + avatarType);
+            if (!oldAvatar.remove()) {
+                qDebug() << "Received vCard for account" << acc->name << "without avatar, but can't get rid of the file, doing nothing";
+            } else {
+                avatarType = "";
+                avatarHash = "";
+                avaChanged = true;
+            }
+        }
+    }
+
+    if (avaChanged) {
+        QMap<QString, QVariant> change;
+        if (avatarType.size() > 0) {
+            acc->presence.setPhotoHash(avatarHash.toUtf8());
+            acc->presence.setVCardUpdateType(QXmppPresence::VCardUpdateValidPhoto);
+            change.insert("avatarPath", path + "avatar." + avatarType);
+        } else {
+            acc->presence.setPhotoHash("");
+            acc->presence.setVCardUpdateType(QXmppPresence::VCardUpdateNoPhoto);
+            change.insert("avatarPath", "");
+        }
+        acc->client.setClientPresence(acc->presence);
+        emit acc->changed(change);
+    }
+
+    Shared::VCard vCard;
+    initializeVCard(vCard, card);
+
+    if (avatarType.size() > 0) {
+        vCard.setAvatarType(Shared::Avatar::valid);
+        vCard.setAvatarPath(path + "avatar." + avatarType);
+    } else {
+        vCard.setAvatarType(Shared::Avatar::empty);
+    }
+
+    if (acc->delay->isOwnVCardPending())
+        acc->delay->receivedOwnVCard(vCard);
+}
+
+void Core::VCardHandler::handlePresenceOfMyAccountChange(const QXmppPresence& p_presence) {
+    if (!acc->delay->isOwnVCardPending()) {
+        switch (p_presence.vCardUpdateType()) {
+            case QXmppPresence::VCardUpdateNone:            //this presence has nothing to do with photo
+                break;
+            case QXmppPresence::VCardUpdateNotReady:        //let's say the photo didn't change here
+                break;
+            case QXmppPresence::VCardUpdateNoPhoto:         //there is no photo, need to drop if any
+                if (avatarType.size() > 0)
+                    acc->delay->getOwnVCard();
+                break;
+            case QXmppPresence::VCardUpdateValidPhoto:      //there is a photo, need to load
+                if (avatarHash != p_presence.photoHash())
+                    acc->delay->getOwnVCard();
+                break;
+        }
+    }
+}
+
+void Core::VCardHandler::uploadVCard(const Shared::VCard& card) {
+    QXmppVCardIq iq;
+    initializeQXmppVCard(iq, card);
+
+    if (card.getAvatarType() != Shared::Avatar::empty) {
+        QString newPath = card.getAvatarPath();
+        QString oldPath = getAvatarPath();
+        QByteArray data;
+        QString type;
+        if (newPath != oldPath) {
+            QFile avatar(newPath);
+            if (!avatar.open(QFile::ReadOnly)) {
+                qDebug() << "An attempt to upload new vCard to account" << acc->name
+                << "but it wasn't possible to read file" << newPath
+                << "which was supposed to be new avatar, uploading old avatar";
+                if (avatarType.size() > 0) {
+                    QFile oA(oldPath);
+                    if (!oA.open(QFile::ReadOnly)) {
+                        qDebug() << "Couldn't read old avatar of account" << acc->name << ", uploading empty avatar";
+                    } else {
+                        data = oA.readAll();
+                    }
+                }
+            } else {
+                data = avatar.readAll();
+            }
+        } else {
+            if (avatarType.size() > 0) {
+                QFile oA(oldPath);
+                if (!oA.open(QFile::ReadOnly))
+                    qDebug() << "Couldn't read old avatar of account" << acc->name << ", uploading empty avatar";
+                else
+                    data = oA.readAll();
+            }
+        }
+
+        if (data.size() > 0) {
+            QMimeDatabase db;
+            type = db.mimeTypeForData(data).name();
+            iq.setPhoto(data);
+            iq.setPhotoType(type);
+        }
+    }
+
+    acc->vm->setClientVCard(iq);
+    onOwnVCardReceived(iq);
+}
+
+QString Core::VCardHandler::getAvatarPath() const {
+    if (avatarType.size() == 0)
+        return "";
+    else
+        return QStandardPaths::writableLocation(QStandardPaths::CacheLocation) + "/" + acc->name + "/" + "avatar." + avatarType;
+}

core/handlers/vcardhandler.h

@@ -0,0 +1,63 @@
+// Squawk messenger. 
+// Copyright (C) 2019  Yury Gubich <blue@macaw.me>
+// 
+// This program is free software: you can redistribute it and/or modify
+// it under the terms of the GNU General Public License as published by
+// the Free Software Foundation, either version 3 of the License, or
+// (at your option) any later version.
+// 
+// This program is distributed in the hope that it will be useful,
+// but WITHOUT ANY WARRANTY; without even the implied warranty of
+// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+// GNU General Public License for more details.
+// 
+// You should have received a copy of the GNU General Public License
+// along with this program.  If not, see <http://www.gnu.org/licenses/>.
+
+#ifndef CORE_VCARDHANDLER_H
+#define CORE_VCARDHANDLER_H
+
+#include <set>
+
+#include <QXmppVCardIq.h>
+#include <QXmppPresence.h>
+
+#include <QObject>
+
+#include <shared/vcard.h>
+#include <core/adapterfunctions.h>
+
+/**
+ * @todo write docs
+ */
+
+namespace Core {
+
+class Account;
+
+class VCardHandler : public QObject
+{
+    Q_OBJECT
+public:
+    VCardHandler(Account* account);
+    ~VCardHandler();
+
+    void handlePresenceOfMyAccountChange(const QXmppPresence& p_presence);
+    void uploadVCard(const Shared::VCard& card);
+    QString getAvatarPath() const;
+
+    void initialize();
+
+private slots:
+    void onVCardReceived(const QXmppVCardIq& card);
+    void onOwnVCardReceived(const QXmppVCardIq& card);
+
+private:
+    Account* acc;
+
+    QString avatarHash;
+    QString avatarType;
+};
+}
+
+#endif // CORE_VCARDHANDLER_H

core/main.cpp

@@ -1,172 +0,0 @@
-/*
- * Squawk messenger. 
- * Copyright (C) 2019  Yury Gubich <blue@macaw.me>
- *
- * This program is free software: you can redistribute it and/or modify
- * it under the terms of the GNU General Public License as published by
- * the Free Software Foundation, either version 3 of the License, or
- * (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program.  If not, see <http://www.gnu.org/licenses/>.
- */
-
-#include "../shared/global.h"
-#include "../shared/messageinfo.h"
-#include "../ui/squawk.h"
-#include "signalcatcher.h"
-#include "squawk.h"
-#include <QLibraryInfo>
-#include <QSettings>
-#include <QStandardPaths>
-#include <QTranslator>
-#include <QtCore/QObject>
-#include <QtCore/QThread>
-#include <QtWidgets/QApplication>
-
-int main(int argc, char *argv[])
-{
-    qRegisterMetaType<Shared::Message>("Shared::Message");
-    qRegisterMetaType<Shared::MessageInfo>("Shared::MessageInfo");
-    qRegisterMetaType<Shared::VCard>("Shared::VCard");
-    qRegisterMetaType<std::list<Shared::Message>>("std::list<Shared::Message>");
-    qRegisterMetaType<std::list<Shared::MessageInfo>>("std::list<Shared::MessageInfo>");
-    qRegisterMetaType<QSet<QString>>("QSet<QString>");
-    qRegisterMetaType<Shared::ConnectionState>("Shared::ConnectionState");
-    qRegisterMetaType<Shared::Availability>("Shared::Availability");
-    
-    QApplication app(argc, argv);
-    SignalCatcher sc(&app);
-#ifdef Q_OS_WIN
-    // Windows need an organization name for QSettings to work
-    // https://doc.qt.io/qt-5/qsettings.html#basic-usage
-    {
-        const QString& orgName = QApplication::organizationName();
-        if (orgName.isNull() || orgName.isEmpty()) {
-            QApplication::setOrganizationName("squawk");
-        }
-    }
-#endif
-    QApplication::setApplicationName("squawk");
-    QApplication::setApplicationDisplayName("Squawk");
-    QApplication::setApplicationVersion("0.1.5");
-    
-    QTranslator qtTranslator;
-    qtTranslator.load("qt_" + QLocale::system().name(), QLibraryInfo::location(QLibraryInfo::TranslationsPath));
-    app.installTranslator(&qtTranslator);
-    
-    QTranslator myappTranslator;
-    QStringList shares = QStandardPaths::standardLocations(QStandardPaths::AppDataLocation);
-    bool found = false;
-    for (QString share : shares) {
-        found = myappTranslator.load(QLocale(), QLatin1String("squawk"), ".", share + "/l10n");
-        if (found) {
-            break;
-        }
-    }
-    if (!found) {
-        myappTranslator.load(QLocale(), QLatin1String("squawk"), ".", QCoreApplication::applicationDirPath());
-    }
-    
-    app.installTranslator(&myappTranslator);
-    
-    QIcon icon;
-    icon.addFile(":images/logo.svg", QSize(16, 16));
-    icon.addFile(":images/logo.svg", QSize(24, 24));
-    icon.addFile(":images/logo.svg", QSize(32, 32));
-    icon.addFile(":images/logo.svg", QSize(48, 48));
-    icon.addFile(":images/logo.svg", QSize(64, 64));
-    icon.addFile(":images/logo.svg", QSize(96, 96));
-    icon.addFile(":images/logo.svg", QSize(128, 128));
-    icon.addFile(":images/logo.svg", QSize(256, 256));
-    icon.addFile(":images/logo.svg", QSize(512, 512));
-    QApplication::setWindowIcon(icon);
-    
-    new Shared::Global();        //translates enums
-    
-    Squawk w;
-    w.show();
-    
-    Core::Squawk* squawk = new Core::Squawk();
-    QThread* coreThread = new QThread();
-    squawk->moveToThread(coreThread);
-    
-    QObject::connect(coreThread, &QThread::started, squawk, &Core::Squawk::start);
-    QObject::connect(&app, &QApplication::aboutToQuit, squawk, &Core::Squawk::stop);
-    QObject::connect(&app, &QApplication::aboutToQuit, &w, &QMainWindow::close);
-    QObject::connect(squawk, &Core::Squawk::quit, coreThread, &QThread::quit);
-    QObject::connect(coreThread, &QThread::finished, squawk, &Core::Squawk::deleteLater);
-    
-    QObject::connect(&w, &Squawk::newAccountRequest, squawk, &Core::Squawk::newAccountRequest);
-    QObject::connect(&w, &Squawk::modifyAccountRequest, squawk, &Core::Squawk::modifyAccountRequest);
-    QObject::connect(&w, &Squawk::removeAccountRequest, squawk, &Core::Squawk::removeAccountRequest);
-    QObject::connect(&w, &Squawk::connectAccount, squawk, &Core::Squawk::connectAccount);
-    QObject::connect(&w, &Squawk::disconnectAccount, squawk, &Core::Squawk::disconnectAccount);
-    QObject::connect(&w, &Squawk::changeState, squawk, &Core::Squawk::changeState);
-    QObject::connect(&w, &Squawk::sendMessage, squawk,&Core::Squawk::sendMessage);
-    QObject::connect(&w, &Squawk::resendMessage, squawk,&Core::Squawk::resendMessage);
-    QObject::connect(&w, &Squawk::requestArchive, squawk, &Core::Squawk::requestArchive);
-    QObject::connect(&w, &Squawk::subscribeContact, squawk, &Core::Squawk::subscribeContact);
-    QObject::connect(&w, &Squawk::unsubscribeContact, squawk, &Core::Squawk::unsubscribeContact);
-    QObject::connect(&w, &Squawk::addContactRequest, squawk, &Core::Squawk::addContactRequest);
-    QObject::connect(&w, &Squawk::removeContactRequest, squawk, &Core::Squawk::removeContactRequest);
-    QObject::connect(&w, &Squawk::setRoomJoined, squawk, &Core::Squawk::setRoomJoined);
-    QObject::connect(&w, &Squawk::setRoomAutoJoin, squawk, &Core::Squawk::setRoomAutoJoin);
-    QObject::connect(&w, &Squawk::removeRoomRequest, squawk, &Core::Squawk::removeRoomRequest);
-    QObject::connect(&w, &Squawk::addRoomRequest, squawk, &Core::Squawk::addRoomRequest);
-    QObject::connect(&w, &Squawk::fileDownloadRequest, squawk, &Core::Squawk::fileDownloadRequest);
-    QObject::connect(&w, &Squawk::addContactToGroupRequest, squawk, &Core::Squawk::addContactToGroupRequest);
-    QObject::connect(&w, &Squawk::removeContactFromGroupRequest, squawk, &Core::Squawk::removeContactFromGroupRequest);
-    QObject::connect(&w, &Squawk::renameContactRequest, squawk, &Core::Squawk::renameContactRequest);
-    QObject::connect(&w, &Squawk::requestVCard, squawk, &Core::Squawk::requestVCard);
-    QObject::connect(&w, &Squawk::uploadVCard, squawk, &Core::Squawk::uploadVCard);
-    QObject::connect(&w, &Squawk::responsePassword, squawk, &Core::Squawk::responsePassword);
-    QObject::connect(&w, &Squawk::localPathInvalid, squawk, &Core::Squawk::onLocalPathInvalid);
-    
-    QObject::connect(squawk, &Core::Squawk::newAccount, &w, &Squawk::newAccount);
-    QObject::connect(squawk, &Core::Squawk::addContact, &w, &Squawk::addContact);
-    QObject::connect(squawk, &Core::Squawk::changeAccount, &w, &Squawk::changeAccount);
-    QObject::connect(squawk, &Core::Squawk::removeAccount, &w, &Squawk::removeAccount);
-    QObject::connect(squawk, &Core::Squawk::addGroup, &w, &Squawk::addGroup);
-    QObject::connect(squawk, &Core::Squawk::removeGroup, &w, &Squawk::removeGroup);
-    QObject::connect(squawk, qOverload<const QString&, const QString&>(&Core::Squawk::removeContact), 
-                     &w, qOverload<const QString&, const QString&>(&Squawk::removeContact));
-    QObject::connect(squawk, qOverload<const QString&, const QString&, const QString&>(&Core::Squawk::removeContact), 
-                     &w, qOverload<const QString&, const QString&, const QString&>(&Squawk::removeContact));
-    QObject::connect(squawk, &Core::Squawk::changeContact, &w, &Squawk::changeContact);
-    QObject::connect(squawk, &Core::Squawk::addPresence, &w, &Squawk::addPresence);
-    QObject::connect(squawk, &Core::Squawk::removePresence, &w, &Squawk::removePresence);
-    QObject::connect(squawk, &Core::Squawk::stateChanged, &w, &Squawk::stateChanged);
-    QObject::connect(squawk, &Core::Squawk::accountMessage, &w, &Squawk::accountMessage);
-    QObject::connect(squawk, &Core::Squawk::changeMessage, &w, &Squawk::changeMessage);
-    QObject::connect(squawk, &Core::Squawk::responseArchive, &w, &Squawk::responseArchive);
-    QObject::connect(squawk, &Core::Squawk::addRoom, &w, &Squawk::addRoom);
-    QObject::connect(squawk, &Core::Squawk::changeRoom, &w, &Squawk::changeRoom);
-    QObject::connect(squawk, &Core::Squawk::removeRoom, &w, &Squawk::removeRoom);
-    QObject::connect(squawk, &Core::Squawk::addRoomParticipant, &w, &Squawk::addRoomParticipant);
-    QObject::connect(squawk, &Core::Squawk::changeRoomParticipant, &w, &Squawk::changeRoomParticipant);
-    QObject::connect(squawk, &Core::Squawk::removeRoomParticipant, &w, &Squawk::removeRoomParticipant);
-    QObject::connect(squawk, &Core::Squawk::fileDownloadComplete, &w, &Squawk::fileDownloadComplete);
-    QObject::connect(squawk, &Core::Squawk::fileUploadComplete, &w, &Squawk::fileUploadComplete);
-    QObject::connect(squawk, &Core::Squawk::fileProgress, &w, &Squawk::fileProgress);
-    QObject::connect(squawk, &Core::Squawk::fileError, &w, &Squawk::fileError);
-    QObject::connect(squawk, &Core::Squawk::responseVCard, &w, &Squawk::responseVCard);
-    QObject::connect(squawk, &Core::Squawk::requestPassword, &w, &Squawk::requestPassword);
-    QObject::connect(squawk, &Core::Squawk::ready, &w, &Squawk::readSettings);
-    
-    coreThread->start();
-
-    int result = app.exec();
-    
-    w.writeSettings();
-    coreThread->wait(500);      //TODO hate doing that but settings for some reason don't get saved to the disk
-    
-    
-    return result;
-}
-

core/passwordStorageEngines/kwallet.cpp

@@ -28,7 +28,8 @@ Core::PSE::KWallet::CreateFolder Core::PSE::KWallet::createFolder = 0;
 Core::PSE::KWallet::SetFolder Core::PSE::KWallet::setFolder = 0;
 
 Core::PSE::KWallet::SupportState Core::PSE::KWallet::sState = Core::PSE::KWallet::initial;
-QLibrary Core::PSE::KWallet::lib("kwalletWrapper");
+
+QLibrary Core::PSE::KWallet::lib(QString("%1/kwalletWrapper").arg(PLUGIN_PATH));
 
 Core::PSE::KWallet::KWallet():
     QObject(),

core/passwordStorageEngines/wrappers/CMakeLists.txt

@@ -1,2 +1,4 @@
 add_library(kwalletWrapper SHARED kwallet.cpp)
 target_link_libraries(kwalletWrapper PRIVATE KF5::Wallet)
+
+install(TARGETS kwalletWrapper LIBRARY DESTINATION ${CMAKE_INSTALL_LIBDIR}/squawk)

core/passwordStorageEngines/wrappers/kwallet.cpp

@@ -1,3 +1,21 @@
+/*
+ * Squawk messenger.
+ * Copyright (C) 2019  Yury Gubich <blue@macaw.me>
+ *
+ * This program is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation, either version 3 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program.  If not, see <http://www.gnu.org/licenses/>.
+ */
+
 #include <KF5/KWallet/KWallet>
 
 extern "C" KWallet::Wallet* openWallet(const QString &name, WId w, KWallet::Wallet::OpenType ot = KWallet::Wallet::Synchronous) {

core/rosteritem.cpp

@@ -27,7 +27,7 @@ Core::RosterItem::RosterItem(const QString& pJid, const QString& pAccount, QObje
     account(pAccount),
     name(),
     archiveState(empty),
-    archive(new Archive(jid)),
+    archive(new Archive(account, jid)),
     syncronizing(false),
     requestedCount(0),
     requestedBefore(),
@@ -38,42 +38,36 @@ Core::RosterItem::RosterItem(const QString& pJid, const QString& pAccount, QObje
     toCorrect(),
     muc(false)
 {
-    archive->open(account);
+    archive->open();
     
     if (archive->size() != 0) {
-        if (archive->isFromTheBeginning()) {
+        if (archive->isFromTheBeginning())
             archiveState = beginning;
-        } else {
+        else
             archiveState = chunk;
     }
 }
-}
 
-Core::RosterItem::~RosterItem()
-{
+Core::RosterItem::~RosterItem() {
     delete archive;
 }
 
-Core::RosterItem::ArchiveState Core::RosterItem::getArchiveState() const
-{
+Core::RosterItem::ArchiveState Core::RosterItem::getArchiveState() const {
     return archiveState;
 }
 
-QString Core::RosterItem::getName() const
-{
+QString Core::RosterItem::getName() const {
     return name;
 }
 
-void Core::RosterItem::setName(const QString& n)
-{
+void Core::RosterItem::setName(const QString& n) {
     if (name != n) {
         name = n;
         emit nameChanged(name);
     }
 }
 
-void Core::RosterItem::addMessageToArchive(const Shared::Message& msg)
-{
+void Core::RosterItem::addMessageToArchive(const Shared::Message& msg) {
     if (msg.storable()) {
         hisoryCache.push_back(msg);
         std::map<QString, Shared::Message>::iterator itr = toCorrect.find(msg.getId());
@@ -87,8 +81,7 @@ void Core::RosterItem::addMessageToArchive(const Shared::Message& msg)
     }
 }
 
-void Core::RosterItem::correctMessageInArchive(const QString& originalId, const Shared::Message& msg)
-{
+void Core::RosterItem::correctMessageInArchive(const QString& originalId, const Shared::Message& msg) {
     if (msg.storable()) {
         QDateTime thisTime = msg.getTime();
         std::map<QString, Shared::Message>::iterator itr = toCorrect.find(originalId);
@@ -109,8 +102,7 @@ void Core::RosterItem::correctMessageInArchive(const QString& originalId, const
     }
 }
 
-void Core::RosterItem::requestHistory(int count, const QString& before)
-{
+void Core::RosterItem::requestHistory(int count, const QString& before) {
     if (syncronizing) {
         requestCache.emplace_back(count, before);
     } else {
@@ -118,12 +110,12 @@ void Core::RosterItem::requestHistory(int count, const QString& before)
     }
 }
 
-void Core::RosterItem::nextRequest()
-{
+void Core::RosterItem::nextRequest() {
     if (syncronizing) {
         if (requestedCount != -1) {
             bool last = false;
             if (archiveState == beginning || archiveState == complete) {
+                try {
                     QString firstId = archive->oldestId();
                     if (responseCache.size() == 0) {
                         if (requestedBefore == firstId) {
@@ -134,6 +126,10 @@ void Core::RosterItem::nextRequest()
                             last = true;
                         }
                     }
+                //} catch (const Archive::Empty& e) {
+                } catch (const LMDBAL::NotFound& e) {
+                    last = true;
+                }
             } else if (archiveState == empty && responseCache.size() == 0) {
                 last = true;
             }
@@ -153,8 +149,7 @@ void Core::RosterItem::nextRequest()
     }
 }
 
-void Core::RosterItem::performRequest(int count, const QString& before)
-{
+void Core::RosterItem::performRequest(int count, const QString& before) {
     syncronizing = true;
     requestedCount = count;
     requestedBefore = before;
@@ -171,8 +166,13 @@ void Core::RosterItem::performRequest(int count, const QString& before)
                 requestCache.emplace_back(requestedCount, before);
                 requestedCount = -1;
             }
+            try {
                 Shared::Message msg = archive->newest();
                 emit needHistory("", getId(msg), msg.getTime());
+            //} catch (const Archive::Empty& e) {
+            } catch (const LMDBAL::NotFound& e) {   //this can happen when the only message in archive is not server stored (error, for example)
+                emit needHistory(before, "");
+            }
         }
             break;
         case end: 
@@ -188,14 +188,14 @@ void Core::RosterItem::performRequest(int count, const QString& before)
                     std::list<Shared::Message> arc = archive->getBefore(requestedCount - responseCache.size(), lBefore);
                     responseCache.insert(responseCache.begin(), arc.begin(), arc.end());
                     found = true;
-                } catch (const Archive::NotFound& e) {
-                    requestCache.emplace_back(requestedCount, before);
-                    requestedCount = -1;
-                    emit needHistory(getId(archive->oldest()), "");
-                } catch (const Archive::Empty& e) {
+                } catch (const LMDBAL::NotFound& e) {
                     requestCache.emplace_back(requestedCount, before);
                     requestedCount = -1;
                     emit needHistory(getId(archive->oldest()), "");
+                // } catch (const Archive::Empty& e) {
+                //     requestCache.emplace_back(requestedCount, before);
+                //     requestedCount = -1;
+                //     emit needHistory(getId(archive->oldest()), "");
                 }
                 
                 if (found) {
@@ -228,18 +228,17 @@ void Core::RosterItem::performRequest(int count, const QString& before)
             try {
                 std::list<Shared::Message> arc = archive->getBefore(requestedCount - responseCache.size(), before);
                 responseCache.insert(responseCache.begin(), arc.begin(), arc.end());
-            } catch (const Archive::NotFound& e) {
-                qDebug("requesting id hasn't been found in archive, skipping");
-            } catch (const Archive::Empty& e) {
+            } catch (const LMDBAL::NotFound& e) {
                 qDebug("requesting id hasn't been found in archive, skipping");
+            // } catch (const Archive::Empty& e) {
+            //     qDebug("requesting id hasn't been found in archive, skipping");
             }
             nextRequest();
             break;
     }
 }
 
-QString Core::RosterItem::getId(const Shared::Message& msg)
-{
+QString Core::RosterItem::getId(const Shared::Message& msg) {
     QString id;
     if (muc) {
         id = msg.getStanzaId();
@@ -249,8 +248,7 @@ QString Core::RosterItem::getId(const Shared::Message& msg)
     return id;
 }
 
-void Core::RosterItem::appendMessageToArchive(const Shared::Message& msg)
-{
+void Core::RosterItem::appendMessageToArchive(const Shared::Message& msg) {
     if (msg.getId().size() > 0) {
         if (msg.storable()) {
             switch (archiveState) {
@@ -291,8 +289,7 @@ void Core::RosterItem::appendMessageToArchive(const Shared::Message& msg)
     }
 }
 
-bool Core::RosterItem::changeMessage(const QString& id, const QMap<QString, QVariant>& data)
-{
+bool Core::RosterItem::changeMessage(const QString& id, const QMap<QString, QVariant>& data) {
     bool found = false;
     for (Shared::Message& msg : appendCache) {
         if (msg.getId() == id) {
@@ -316,7 +313,7 @@ bool Core::RosterItem::changeMessage(const QString& id, const QMap<QString, QVar
         try {
             archive->changeMessage(id, data);
             found = true;
-        } catch (const Archive::NotFound& e) {
+        } catch (const LMDBAL::NotFound& e) {
             qDebug() << "An attempt to change state to the message" << id << "but it couldn't be found";
         }
     }
@@ -333,8 +330,7 @@ bool Core::RosterItem::changeMessage(const QString& id, const QMap<QString, QVar
     return found;
 }
 
-void Core::RosterItem::flushMessagesToArchive(bool finished, const QString& firstId, const QString& lastId)
-{
+void Core::RosterItem::flushMessagesToArchive(bool finished, const QString& firstId, const QString& lastId) {
     unsigned int added(0);
     if (hisoryCache.size() > 0) {
         added = archive->addElements(hisoryCache);
@@ -393,10 +389,8 @@ void Core::RosterItem::flushMessagesToArchive(bool finished, const QString& firs
                     std::list<Shared::Message> arc = archive->getBefore(requestedCount - responseCache.size(), before);
                     responseCache.insert(responseCache.begin(), arc.begin(), arc.end());
                     found = true;
-                } catch (const Archive::NotFound& e) {
-                    
-                } catch (const Archive::Empty& e) {
-                    
+                } catch (const LMDBAL::NotFound& e) {
+                // } catch (const Archive::Empty& e) {
                 }
                 if (!found || requestedCount > int(responseCache.size())) {
                     if (archiveState == complete) {
@@ -421,51 +415,43 @@ void Core::RosterItem::flushMessagesToArchive(bool finished, const QString& firs
     }
 }
 
-QString Core::RosterItem::getServer() const
-{
+QString Core::RosterItem::getServer() const {
     QStringList lst = jid.split("@");
     return lst.back();
 }
 
-bool Core::RosterItem::isMuc() const
-{
+bool Core::RosterItem::isMuc() const {
     return muc;
 }
 
-QString Core::RosterItem::avatarPath(const QString& resource) const
-{
+QString Core::RosterItem::avatarPath(const QString& resource) const {
     QString path = folderPath() + "/" + (resource.size() == 0 ? jid : resource);
     return path;
 }
 
-QString Core::RosterItem::folderPath() const
-{
+QString Core::RosterItem::folderPath() const {
     QString path(QStandardPaths::writableLocation(QStandardPaths::CacheLocation));
     path += "/" + account + "/" + jid;
     return path;
 }
 
-bool Core::RosterItem::setAvatar(const QByteArray& data, Archive::AvatarInfo& info, const QString& resource)
-{
+bool Core::RosterItem::setAvatar(const QByteArray& data, Archive::AvatarInfo& info, const QString& resource) {
     bool result = archive->setAvatar(data, info, false, resource);
     if (resource.size() == 0 && result) {
-        if (data.size() == 0) {
+        if (data.size() == 0)
             emit avatarChanged(Shared::Avatar::empty, "");
-        } else {
+        else
             emit avatarChanged(Shared::Avatar::valid, avatarPath(resource) + "." + info.type);
     }
-    }
     return result;
 }
 
-bool Core::RosterItem::setAutoGeneratedAvatar(const QString& resource)
-{
+bool Core::RosterItem::setAutoGeneratedAvatar(const QString& resource) {
     Archive::AvatarInfo info;
     return setAutoGeneratedAvatar(info, resource);
 }
 
-bool Core::RosterItem::setAutoGeneratedAvatar(Archive::AvatarInfo& info, const QString& resource)
-{
+bool Core::RosterItem::setAutoGeneratedAvatar(Archive::AvatarInfo& info, const QString& resource) {
     QImage image(96, 96, QImage::Format_ARGB32_Premultiplied);
     QPainter painter(&image);
     quint8 colorIndex = rand() % Shared::colorPalette.size();
@@ -475,11 +461,11 @@ bool Core::RosterItem::setAutoGeneratedAvatar(Archive::AvatarInfo& info, const Q
     f.setBold(true);
     f.setPixelSize(72);
     painter.setFont(f);
-    if (bg.lightnessF() > 0.5) {
+    if (bg.lightnessF() > 0.5)
         painter.setPen(Qt::black);
-    } else {
+    else
         painter.setPen(Qt::white);
-    }
+
     painter.drawText(image.rect(), Qt::AlignCenter | Qt::AlignVCenter, resource.size() == 0 ? jid.at(0).toUpper() : resource.at(0).toUpper());
     QByteArray arr;
     QBuffer stream(&arr);
@@ -487,25 +473,22 @@ bool Core::RosterItem::setAutoGeneratedAvatar(Archive::AvatarInfo& info, const Q
     image.save(&stream, "PNG");
     stream.close();
     bool result = archive->setAvatar(arr, info, true, resource);
-    if (resource.size() == 0 && result) {
+    if (resource.size() == 0 && result)
         emit avatarChanged(Shared::Avatar::autocreated, avatarPath(resource) + ".png");
-    }
+
     return result;
 }
 
-bool Core::RosterItem::readAvatarInfo(Archive::AvatarInfo& target, const QString& resource) const
-{
+bool Core::RosterItem::readAvatarInfo(Archive::AvatarInfo& target, const QString& resource) const {
     return archive->readAvatarInfo(target, resource);
 }
 
-Shared::VCard Core::RosterItem::handleResponseVCard(const QXmppVCardIq& card, const QString& resource)
-{
+void Core::RosterItem::handleResponseVCard(const QXmppVCardIq& card, const QString& resource, Shared::VCard& vCard) {
     Archive::AvatarInfo info;
     Archive::AvatarInfo newInfo;
     bool hasAvatar = readAvatarInfo(info, resource);
     
     QByteArray ava = card.photo();
-    Shared::VCard vCard;
     initializeVCard(vCard, card);
     Shared::Avatar type = Shared::Avatar::empty;
     QString path = "";
@@ -525,9 +508,9 @@ Shared::VCard Core::RosterItem::handleResponseVCard(const QXmppVCardIq& card, co
             }
         }
     } else {
-        if (!hasAvatar || !info.autogenerated) {
+        if (!hasAvatar || !info.autogenerated)
             setAutoGeneratedAvatar(resource);
-        }
+
         type = Shared::Avatar::autocreated;
         path = avatarPath(resource) + ".png";
     }
@@ -535,15 +518,11 @@ Shared::VCard Core::RosterItem::handleResponseVCard(const QXmppVCardIq& card, co
     vCard.setAvatarType(type);
     vCard.setAvatarPath(path);
     
-    if (resource.size() == 0) {
+    if (resource.size() == 0)
         emit avatarChanged(vCard.getAvatarType(), vCard.getAvatarPath());
 }
 
-    return vCard;
-}
-
-void Core::RosterItem::clearArchiveRequests()
-{
+void Core::RosterItem::clearArchiveRequests() {
     syncronizing = false;
     requestedCount = 0;
     requestedBefore = "";
@@ -559,30 +538,72 @@ void Core::RosterItem::clearArchiveRequests()
     requestCache.clear();
 }
 
-void Core::RosterItem::downgradeDatabaseState()
-{
-    if (archiveState == ArchiveState::complete) {
+void Core::RosterItem::downgradeDatabaseState() {
+    if (archiveState == ArchiveState::complete)
         archiveState = ArchiveState::beginning;
-    }
 
-    if (archiveState == ArchiveState::end) {
+    
+    if (archiveState == ArchiveState::end)
         archiveState = ArchiveState::chunk;
 }
-}
 
-Shared::Message Core::RosterItem::getMessage(const QString& id)
-{
+Shared::Message Core::RosterItem::getMessage(const QString& id) {
     for (const Shared::Message& msg : appendCache) {
-        if (msg.getId() == id) {
+        if (msg.getId() == id)
             return msg;
     }
-    }
     
     for (Shared::Message& msg : hisoryCache) {
-        if (msg.getId() == id) {
+        if (msg.getId() == id)
             return msg;
     }
-    }
     
     return archive->getElement(id);
 }
+
+Shared::EncryptionProtocol Core::RosterItem::encryption() const {
+    return archive->encryption();
+}
+
+void Core::RosterItem::setEncryption(Shared::EncryptionProtocol value) {
+    bool changed = archive->setEncryption(value);
+    if (changed)
+        emit encryptionChanged(value);
+}
+
+QMap<QString, QVariant> Core::RosterItem::getInfo() const {
+    QMap<QString, QVariant> result({
+        {"name", name},
+        {"encryption", QVariant::fromValue(encryption())},
+    });
+    Archive::AvatarInfo info;
+    bool hasAvatar = readAvatarInfo(info);
+    careAboutAvatar(hasAvatar, info, result);
+
+    return result;
+}
+
+
+void Core::RosterItem::careAboutAvatar (
+    bool hasAvatar,
+    const Archive::AvatarInfo& info,
+    QMap<QString, QVariant>& output,
+    const QString& resource,
+    const QString& subject
+) const {
+    if (hasAvatar) {
+        if (info.autogenerated)
+            output.insert("avatarState", QVariant::fromValue(Shared::Avatar::autocreated));
+        else
+            output.insert("avatarState", QVariant::fromValue(Shared::Avatar::valid));
+
+        output.insert("avatarPath", avatarPath(resource) + "." + info.type);
+    } else {
+        output.insert("avatarState", QVariant::fromValue(Shared::Avatar::empty));
+        output.insert("avatarPath", "");
+        if (subject.size() == 0)
+            emit requestVCard(jid);
+        else
+            emit requestVCard(subject);
+    }
+}

core/rosteritem.h

@@ -16,8 +16,7 @@
  * along with this program.  If not, see <http://www.gnu.org/licenses/>.
  */
 
-#ifndef CORE_ROSTERITEM_H
-#define CORE_ROSTERITEM_H
+#pragma once
 
 #include <QObject>
 #include <QString>
@@ -34,7 +33,8 @@
 #include "shared/enums.h"
 #include "shared/message.h"
 #include "shared/vcard.h"
-#include "archive.h"
+#include "components/archive.h"
+#include "adapterfunctions.h"
 
 namespace Core {
 
@@ -61,6 +61,8 @@ public:
     void setName(const QString& n);
     QString getServer() const;
     bool isMuc() const;
+    Shared::EncryptionProtocol encryption() const;
+    void setEncryption(Shared::EncryptionProtocol value);
     
     void addMessageToArchive(const Shared::Message& msg);
     void correctMessageInArchive(const QString& originalId, const Shared::Message& msg);
@@ -71,22 +73,24 @@ public:
     QString folderPath() const;
     bool readAvatarInfo(Archive::AvatarInfo& target, const QString& resource = "") const;
     virtual bool setAutoGeneratedAvatar(const QString& resource = "");
-    virtual Shared::VCard handleResponseVCard(const QXmppVCardIq& card, const QString& resource);
+    virtual void handleResponseVCard(const QXmppVCardIq& card, const QString& resource, Shared::VCard& out);
     virtual void handlePresence(const QXmppPresence& pres) = 0;
     
     bool changeMessage(const QString& id, const QMap<QString, QVariant>& data);
     void clearArchiveRequests();
     void downgradeDatabaseState();
+    virtual QMap<QString, QVariant> getInfo() const;
     
     Shared::Message getMessage(const QString& id);
     
 signals:
-    void nameChanged(const QString& name);
-    void subscriptionStateChanged(Shared::SubscriptionState state);
-    void historyResponse(const std::list<Shared::Message>& messages, bool last);
-    void needHistory(const QString& before, const QString& after, const QDateTime& afterTime = QDateTime());
-    void avatarChanged(Shared::Avatar, const QString& path);
-    void requestVCard(const QString& jid);
+    void nameChanged(const QString& name) const;
+    void subscriptionStateChanged(Shared::SubscriptionState state) const;
+    void historyResponse(const std::list<Shared::Message>& messages, bool last) const;
+    void needHistory(const QString& before, const QString& after, const QDateTime& afterTime = QDateTime()) const;
+    void avatarChanged(Shared::Avatar, const QString& path) const;
+    void requestVCard(const QString& jid) const;
+    void encryptionChanged(Shared::EncryptionProtocol value) const;
     
 public:
     const QString jid;
@@ -95,6 +99,13 @@ public:
 protected:
     virtual bool setAvatar(const QByteArray& data, Archive::AvatarInfo& info, const QString& resource = "");
     virtual bool setAutoGeneratedAvatar(Archive::AvatarInfo& info, const QString& resource = "");
+    void careAboutAvatar(
+        bool hasAvatar,
+        const Archive::AvatarInfo& info,
+        QMap<QString, QVariant>& output,
+        const QString& resource = "",
+        const QString& subject = ""
+    ) const;
     
 protected:
     QString name;
@@ -118,5 +129,3 @@ private:
 };
 
 }
-
-#endif // CORE_ROSTERITEM_H

core/signalcatcher.cpp

@@ -21,6 +21,8 @@
 #include <sys/socket.h>
 #include <unistd.h>
 
+#include "shared/defines.h"
+
 int SignalCatcher::sigintFd[2] = {0,0};
 
 SignalCatcher::SignalCatcher(QCoreApplication *p_app, QObject *parent):
@@ -28,14 +30,10 @@ SignalCatcher::SignalCatcher(QCoreApplication *p_app, QObject *parent):
     app(p_app)
 {
     if (::socketpair(AF_UNIX, SOCK_STREAM, 0, sigintFd))
-    {
         qFatal("Couldn't create INT socketpair");
-    }
     
     if (setup_unix_signal_handlers() != 0) 
-    {
         qFatal("Couldn't install unix handlers");
-    }
     
     snInt = new QSocketNotifier(sigintFd[1], QSocketNotifier::Read, this);
     connect(snInt, &QSocketNotifier::activated, this, &SignalCatcher::handleSigInt);
@@ -44,25 +42,25 @@ SignalCatcher::SignalCatcher(QCoreApplication *p_app, QObject *parent):
 SignalCatcher::~SignalCatcher()
 {}
 
-void SignalCatcher::handleSigInt()
-{
+void SignalCatcher::handleSigInt() {
     snInt->setEnabled(false);
     char tmp;
     ssize_t s = ::read(sigintFd[1], &tmp, sizeof(tmp));
+    SHARED_UNUSED(s);
 
-    app->quit();
+    emit interrupt();
 
     snInt->setEnabled(true);
 }
 
-void SignalCatcher::intSignalHandler(int unused)
-{
+void SignalCatcher::intSignalHandler(int unused) {
     char a = 1;
     ssize_t s = ::write(sigintFd[0], &a, sizeof(a));
+    SHARED_UNUSED(s);
+    SHARED_UNUSED(unused);
 }
 
-int SignalCatcher::setup_unix_signal_handlers()
-{
+int SignalCatcher::setup_unix_signal_handlers() {
     struct sigaction s_int;
 
     s_int.sa_handler = SignalCatcher::intSignalHandler;

core/signalcatcher.h

@@ -33,6 +33,9 @@ public:
     
     static void intSignalHandler(int unused);
     
+signals:
+    void interrupt();
+
 public slots:
     void handleSigInt();
     

core/squawk.cpp

@@ -22,16 +22,21 @@
 #include <QDir>
 #include <QStandardPaths>
 
+#ifdef WITH_SIMPLE_CRYPT
+#include "external/simpleCrypt/simplecrypt.h"
+#endif
+
 Core::Squawk::Squawk(QObject* parent):
     QObject(parent),
     accounts(),
     amap(),
+    state(Shared::Availability::offline),
     network(),
-    waitingForAccounts(0),
-    isInitialized(false)
+    isInitialized(false),
 #ifdef WITH_KWALLET
-    ,kwallet()
+    kwallet(),
 #endif
+    clientCache()
 {
     connect(&network, &NetworkAccess::loadFileProgress, this, &Squawk::fileProgress);
     connect(&network, &NetworkAccess::loadFileError, this, &Squawk::fileError);
@@ -42,15 +47,14 @@ Core::Squawk::Squawk(QObject* parent):
     if (kwallet.supportState() == PSE::KWallet::success) {
         connect(&kwallet, &PSE::KWallet::opened, this, &Squawk::onWalletOpened);
         connect(&kwallet, &PSE::KWallet::rejectPassword, this, &Squawk::onWalletRejectPassword);
-        connect(&kwallet, &PSE::KWallet::responsePassword, this, &Squawk::onWalletResponsePassword);
+        connect(&kwallet, &PSE::KWallet::responsePassword, this, &Squawk::responsePassword);
         
         Shared::Global::setSupported("KWallet", true);
     }
 #endif
 }
 
-Core::Squawk::~Squawk()
-{
+Core::Squawk::~Squawk() {
     Accounts::const_iterator itr = accounts.begin(); 
     Accounts::const_iterator end = accounts.end();
     for (; itr != end; ++itr) {
@@ -58,21 +62,19 @@ Core::Squawk::~Squawk()
     }
 }
 
-void Core::Squawk::onWalletOpened(bool success)
-{
+void Core::Squawk::onWalletOpened(bool success) {
     qDebug() << "KWallet opened: " << success;
 }
 
-void Core::Squawk::stop()
-{
+void Core::Squawk::stop() {
     qDebug("Stopping squawk core..");
     network.stop();
+    clientCache.close();
 
     if (isInitialized) {
         QSettings settings;
         settings.beginGroup("core");
         settings.beginWriteArray("accounts");
-        SimpleCrypt crypto(passwordHash);
         for (std::deque<Account*>::size_type i = 0; i < accounts.size(); ++i) {
             settings.setArrayIndex(i);
             Account* acc = accounts[i];
@@ -85,7 +87,13 @@ void Core::Squawk::stop()
                     password = acc->getPassword();
                     break;
                 case Shared::AccountPassword::jammed:
-                    password = crypto.encryptToString(acc->getPassword());
+#ifdef WITH_SIMPLE_CRYPT2
+                    password = SimpleCrypt(passwordHash).encryptToString(acc->getPassword());
+#else
+                    qDebug() << "The password for account" << acc->getName() << "is set to be jammed, but Squawk was compiled without SimpleCrypt support";
+                    qDebug("Can not encode password, setting this account to always ask password mode");
+                    ap = Shared::AccountPassword::alwaysAsk;
+#endif
                     break;
                 default:
                     break;
@@ -97,6 +105,7 @@ void Core::Squawk::stop()
             settings.setValue("password", password);
             settings.setValue("resource", acc->getResource());
             settings.setValue("passwordType", static_cast<int>(ap));
+            settings.setValue("active", acc->getActive());
         }
         settings.endArray();
         settings.endGroup();
@@ -107,25 +116,25 @@ void Core::Squawk::stop()
     emit quit();
 }
 
-void Core::Squawk::start()
-{
+void Core::Squawk::start() {
     qDebug("Starting squawk core..");
     
     readSettings();
     isInitialized = true;
     network.start();
+    clientCache.open();
 }
 
-void Core::Squawk::newAccountRequest(const QMap<QString, QVariant>& map)
-{
+void Core::Squawk::newAccountRequest(const QMap<QString, QVariant>& map) {
     QString name = map.value("name").toString();
     QString login = map.value("login").toString();
     QString server = map.value("server").toString();
     QString password = map.value("password").toString();
     QString resource = map.value("resource").toString();
     int passwordType = map.value("passwordType").toInt();
+    bool active = map.value("active").toBool();
     
-    addAccount(login, server, password, name, resource, Shared::Global::fromInt<Shared::AccountPassword>(passwordType));
+    addAccount(login, server, password, name, resource, active, Shared::Global::fromInt<Shared::AccountPassword>(passwordType));
 }
 
 void Core::Squawk::addAccount(
@@ -134,12 +143,14 @@ void Core::Squawk::addAccount(
     const QString& password, 
     const QString& name, 
     const QString& resource,
-    Shared::AccountPassword passwordType
-)
+    bool active,
+    Shared::AccountPassword passwordType)
 {
-    QSettings settings;
-    
-    Account* acc = new Account(login, server, password, name, &network);
+    if (amap.count(name) > 0) {
+        qDebug() << "An attempt to add account" << name << "but an account with such name already exist, ignoring";
+        return;
+    }
+    Account* acc = new Account(login, server, password, name, active, &network);
     acc->setResource(resource);
     acc->setPasswordType(passwordType);
     accounts.push_back(acc);
@@ -148,6 +159,8 @@ void Core::Squawk::addAccount(
     connect(acc, &Account::connectionStateChanged, this, &Squawk::onAccountConnectionStateChanged);
     connect(acc, &Account::changed, this, &Squawk::onAccountChanged);
     connect(acc, &Account::error, this, &Squawk::onAccountError);
+    connect(acc, &Account::needPassword, this, &Squawk::onAccountNeedPassword);
+
     connect(acc, &Account::availabilityChanged, this, &Squawk::onAccountAvailabilityChanged);
     connect(acc, &Account::addContact, this, &Squawk::onAccountAddContact);
     connect(acc, &Account::addGroup, this, &Squawk::onAccountAddGroup);
@@ -171,10 +184,12 @@ void Core::Squawk::addAccount(
     connect(acc, &Account::changeRoomParticipant, this, &Squawk::onAccountChangeRoomPresence);
     connect(acc, &Account::removeRoomParticipant, this, &Squawk::onAccountRemoveRoomPresence);
     
-    connect(acc, &Account::receivedVCard, this, &Squawk::responseVCard);
+    connect(acc, &Account::infoReady, this, &Squawk::responseInfo);
     
     connect(acc, &Account::uploadFileError, this, &Squawk::onAccountUploadFileError);
 
+    connect(acc, &Account::infoDiscovered, this, &Squawk::onAccountInfoDiscovered);
+    
     QMap<QString, QVariant> map = {
         {"login", login},
         {"server", server},
@@ -185,48 +200,75 @@ void Core::Squawk::addAccount(
         {"offline", QVariant::fromValue(Shared::Availability::offline)},
         {"error", ""},
         {"avatarPath", acc->getAvatarPath()},
-        {"passwordType", QVariant::fromValue(passwordType)}
+        {"passwordType", QVariant::fromValue(passwordType)},
+        {"active", active}
     };
     
     emit newAccount(map);
+
+    switch (passwordType) {
+        case Shared::AccountPassword::alwaysAsk:
+        case Shared::AccountPassword::kwallet:
+            if (password == "")
+                acc->invalidatePassword();
+
+            break;
+        default:
+            break;
     }
 
-void Core::Squawk::changeState(Shared::Availability p_state)
-{
+    if (state != Shared::Availability::offline) {
+        acc->setAvailability(state);
+        if (acc->getActive())
+            acc->connect();
+    }
+}
+
+void Core::Squawk::changeState(Shared::Availability p_state) {
     if (state != p_state) {
-        state = p_state;
-    }
-    
         for (std::deque<Account*>::iterator itr = accounts.begin(), end = accounts.end(); itr != end; ++itr) {
-        (*itr)->setAvailability(state);
+            Account* acc = *itr;
+            acc->setAvailability(p_state);
+            if (state == Shared::Availability::offline && acc->getActive())
+                acc->connect();
+        }
+        state = p_state;
+
+        emit stateChanged(p_state);
     }
 }
 
-void Core::Squawk::connectAccount(const QString& account)
-{
+void Core::Squawk::connectAccount(const QString& account) {
     AccountsMap::const_iterator itr = amap.find(account);
     if (itr == amap.end()) {
         qDebug("An attempt to connect non existing account, skipping");
         return;
     }
+    itr->second->setActive(true);
+    if (state != Shared::Availability::offline)
         itr->second->connect();
 }
 
-void Core::Squawk::disconnectAccount(const QString& account)
-{
+void Core::Squawk::disconnectAccount(const QString& account) {
     AccountsMap::const_iterator itr = amap.find(account);
     if (itr == amap.end()) {
         qDebug("An attempt to connect non existing account, skipping");
         return;
     }
     
+    itr->second->setActive(false);
     itr->second->disconnect();
 }
 
-void Core::Squawk::onAccountConnectionStateChanged(Shared::ConnectionState p_state)
-{
+void Core::Squawk::onAccountConnectionStateChanged(Shared::ConnectionState p_state) {
     Account* acc = static_cast<Account*>(sender());
-    emit changeAccount(acc->getName(), {{"state", QVariant::fromValue(p_state)}});
+    QMap<QString, QVariant> changes = {
+        {"state", QVariant::fromValue(p_state)}
+    };
+    if (acc->getLastError() == Account::Error::none)
+        changes.insert("error", "");
+
+    emit changeAccount(acc->getName(), changes);
 
 #ifdef WITH_KWALLET
     if (p_state == Shared::ConnectionState::connected) {
@@ -235,103 +277,87 @@ void Core::Squawk::onAccountConnectionStateChanged(Shared::ConnectionState p_sta
         }
     }
 #endif
-    
-    Accounts::const_iterator itr = accounts.begin();
-    bool es = true;
-    bool ea = true;
-    Shared::ConnectionState cs = (*itr)->getState();
-    Shared::Availability av = (*itr)->getAvailability();
-    itr++;
-    for (Accounts::const_iterator end = accounts.end(); itr != end; itr++) {
-        Account* item = *itr;
-        if (item->getState() != cs) {
-            es = false;
-        }
-        if (item->getAvailability() != av) {
-            ea = false;
-        }
 }
 
-    if (es) {
-        if (cs == Shared::ConnectionState::disconnected) {
-            state = Shared::Availability::offline;
-            emit stateChanged(state);
-        } else if (ea) {
-            state = av;
-            emit stateChanged(state);
-        }
-    }
-    
-}
-
-void Core::Squawk::onAccountAddContact(const QString& jid, const QString& group, const QMap<QString, QVariant>& data)
-{
+void Core::Squawk::onAccountAddContact(const QString& jid, const QString& group, const QMap<QString, QVariant>& data) {
     Account* acc = static_cast<Account*>(sender());
     emit addContact(acc->getName(), jid, group, data);
 }
 
-void Core::Squawk::onAccountAddGroup(const QString& name)
-{
+void Core::Squawk::onAccountAddGroup(const QString& name) {
     Account* acc = static_cast<Account*>(sender());
     emit addGroup(acc->getName(), name);
 }
 
-void Core::Squawk::onAccountRemoveGroup(const QString& name)
-{
+void Core::Squawk::onAccountRemoveGroup(const QString& name) {
     Account* acc = static_cast<Account*>(sender());
     emit removeGroup(acc->getName(), name);
 }
 
-void Core::Squawk::onAccountChangeContact(const QString& jid, const QMap<QString, QVariant>& data)
-{
+void Core::Squawk::onAccountChangeContact(const QString& jid, const QMap<QString, QVariant>& data) {
     Account* acc = static_cast<Account*>(sender());
     emit changeContact(acc->getName(), jid, data);
 }
 
-void Core::Squawk::onAccountRemoveContact(const QString& jid)
-{
+void Core::Squawk::onAccountRemoveContact(const QString& jid) {
     Account* acc = static_cast<Account*>(sender());
     emit removeContact(acc->getName(), jid);
 }
 
-void Core::Squawk::onAccountRemoveContact(const QString& jid, const QString& group)
-{
+void Core::Squawk::onAccountRemoveContact(const QString& jid, const QString& group) {
     Account* acc = static_cast<Account*>(sender());
     emit removeContact(acc->getName(), jid, group);
 }
 
-void Core::Squawk::onAccountAddPresence(const QString& jid, const QString& name, const QMap<QString, QVariant>& data)
-{
+void Core::Squawk::onAccountAddPresence(const QString& jid, const QString& name, const QMap<QString, QVariant>& data) {
     Account* acc = static_cast<Account*>(sender());
     emit addPresence(acc->getName(), jid, name, data);
+
+    //it's equal if a MUC sends its status with presence of the same jid (ex: muc@srv.im/muc@srv.im), it's not a client, so, no need to request
+    if (jid != name) {
+        const Shared::ClientId& id = data["client"].value<Shared::ClientId>();
+        if (!id.valid())
+            return;
+
+        if (!clientCache.checkClient(id))
+            acc->discoverInfo(jid + "/" + name, id.getId());
+    }
 }
 
-void Core::Squawk::onAccountRemovePresence(const QString& jid, const QString& name)
+void Core::Squawk::onAccountInfoDiscovered(
+    const QString& address,
+    const QString& node,
+    const std::set<Shared::Identity>& identities,
+    const std::set<QString>& features)
 {
     Account* acc = static_cast<Account*>(sender());
+
+    if (!clientCache.registerClientInfo(address, node, identities, features)) {
+        qDebug() << "Account" << acc->getName() << "received an ill-formed client discovery response from" << address << "about" << node;
+    }
+}
+
+void Core::Squawk::onAccountRemovePresence(const QString& jid, const QString& name) {
+    Account* acc = static_cast<Account*>(sender());
     emit removePresence(acc->getName(), jid, name);
 }
 
-void Core::Squawk::onAccountAvailabilityChanged(Shared::Availability state)
-{
+void Core::Squawk::onAccountAvailabilityChanged(Shared::Availability state) {
     Account* acc = static_cast<Account*>(sender());
     emit changeAccount(acc->getName(), {{"availability", QVariant::fromValue(state)}});
 }
 
-void Core::Squawk::onAccountChanged(const QMap<QString, QVariant>& data)
-{    
+void Core::Squawk::onAccountChanged(const QMap<QString, QVariant>& data) {
     Account* acc = static_cast<Account*>(sender());
     emit changeAccount(acc->getName(), data);
 }
 
-void Core::Squawk::onAccountMessage(const Shared::Message& data)
-{
+void Core::Squawk::onAccountMessage(const Shared::Message& data) {
     Account* acc = static_cast<Account*>(sender());
     emit accountMessage(acc->getName(), data);
 }
 
-void Core::Squawk::sendMessage(const QString& account, const Shared::Message& data)
-{
+void Core::Squawk::sendMessage(const QString& account, const Shared::Message& data) {
     AccountsMap::const_iterator itr = amap.find(account);
     if (itr == amap.end()) {
         qDebug() << "An attempt to send a message with non existing account" << account << ", skipping";
@@ -341,8 +367,17 @@ void Core::Squawk::sendMessage(const QString& account, const Shared::Message& da
     itr->second->sendMessage(data);
 }
 
-void Core::Squawk::resendMessage(const QString& account, const QString& jid, const QString& id)
-{
+void Core::Squawk::replaceMessage(const QString& account, const QString& originalId, const Shared::Message& data) {
+    AccountsMap::const_iterator itr = amap.find(account);
+    if (itr == amap.end()) {
+        qDebug() << "An attempt to replace a message with non existing account" << account << ", skipping";
+        return;
+    }
+
+    itr->second->replaceMessage(originalId, data);
+}
+
+void Core::Squawk::resendMessage(const QString& account, const QString& jid, const QString& id) {
     AccountsMap::const_iterator itr = amap.find(account);
     if (itr == amap.end()) {
         qDebug() << "An attempt to resend a message with non existing account" << account << ", skipping";
@@ -352,8 +387,7 @@ void Core::Squawk::resendMessage(const QString& account, const QString& jid, con
     itr->second->resendMessage(jid, id);
 }
 
-void Core::Squawk::requestArchive(const QString& account, const QString& jid, int count, const QString& before)
-{
+void Core::Squawk::requestArchive(const QString& account, const QString& jid, int count, const QString& before) {
     AccountsMap::const_iterator itr = amap.find(account);
     if (itr == amap.end()) {
         qDebug("An attempt to request an archive of non existing account, skipping");
@@ -362,14 +396,12 @@ void Core::Squawk::requestArchive(const QString& account, const QString& jid, in
     itr->second->requestArchive(jid, count, before);
 }
 
-void Core::Squawk::onAccountResponseArchive(const QString& jid, const std::list<Shared::Message>& list, bool last)
-{
+void Core::Squawk::onAccountResponseArchive(const QString& jid, const std::list<Shared::Message>& list, bool last) {
     Account* acc = static_cast<Account*>(sender());
     emit responseArchive(acc->getName(), jid, list, last);
 }
 
-void Core::Squawk::modifyAccountRequest(const QString& name, const QMap<QString, QVariant>& map)
-{
+void Core::Squawk::modifyAccountRequest(const QString& name, const QMap<QString, QVariant>& map) {
     AccountsMap::const_iterator itr = amap.find(name);
     if (itr == amap.end()) {
         qDebug("An attempt to modify non existing account, skipping");
@@ -380,6 +412,7 @@ void Core::Squawk::modifyAccountRequest(const QString& name, const QMap<QString,
     Shared::ConnectionState st = acc->getState();
     QMap<QString, QVariant>::const_iterator mItr;
     bool needToReconnect = false;
+    bool wentReconnecting = false;
     
     mItr = map.find("login");
     if (mItr != map.end()) {
@@ -405,34 +438,37 @@ void Core::Squawk::modifyAccountRequest(const QString& name, const QMap<QString,
         }
     }
     
+    bool activeChanged = false;
+    mItr = map.find("active");
+    if (mItr == map.end() || mItr->toBool() == acc->getActive()) {
         if (needToReconnect && st != Shared::ConnectionState::disconnected) {
             acc->reconnect();
+            wentReconnecting = true;
+        }
+    } else {
+        acc->setActive(mItr->toBool());
+        activeChanged = true;
     }
     
     mItr = map.find("login");
-    if (mItr != map.end()) {
+    if (mItr != map.end())
         acc->setLogin(mItr->toString());
-    }
     
     mItr = map.find("password");
-    if (mItr != map.end()) {
+    if (mItr != map.end())
         acc->setPassword(mItr->toString());
-    }
     
     mItr = map.find("resource");
-    if (mItr != map.end()) {
+    if (mItr != map.end())
         acc->setResource(mItr->toString());
-    }
     
     mItr = map.find("server");
-    if (mItr != map.end()) {
+    if (mItr != map.end())
         acc->setServer(mItr->toString());
-    }
     
     mItr = map.find("passwordType");
-    if (mItr != map.end()) {
+    if (mItr != map.end())
         acc->setPasswordType(Shared::Global::fromInt<Shared::AccountPassword>(mItr->toInt()));
-    }
     
 #ifdef WITH_KWALLET
     if (acc->getPasswordType() == Shared::AccountPassword::kwallet 
@@ -443,17 +479,25 @@ void Core::Squawk::modifyAccountRequest(const QString& name, const QMap<QString,
     }
 #endif
     
+    if (state != Shared::Availability::offline) {
+        if (activeChanged && acc->getActive())
+            acc->connect();
+        else if (!wentReconnecting && acc->getActive() && acc->getLastError() == Account::Error::authentication)
+            acc->connect();
+    }
+
     emit changeAccount(name, map);
 }
 
-void Core::Squawk::onAccountError(const QString& text)
-{
+void Core::Squawk::onAccountError(const QString& text) {
     Account* acc = static_cast<Account*>(sender());
     emit changeAccount(acc->getName(), {{"error", text}});
+
+    if (acc->getLastError() == Account::Error::authentication)
+        emit requestPassword(acc->getName(), true);
 }
 
-void Core::Squawk::removeAccountRequest(const QString& name)
-{
+void Core::Squawk::removeAccountRequest(const QString& name) {
     AccountsMap::const_iterator itr = amap.find(name);
     if (itr == amap.end()) {
         qDebug() << "An attempt to remove non existing account " << name << " from core, skipping";
@@ -461,9 +505,8 @@ void Core::Squawk::removeAccountRequest(const QString& name)
     }
     
     Account* acc = itr->second;
-    if (acc->getState() != Shared::ConnectionState::disconnected) {
+    if (acc->getState() != Shared::ConnectionState::disconnected)
         acc->disconnect();
-    }
     
     for (Accounts::const_iterator aItr = accounts.begin(); aItr != accounts.end(); ++aItr) {
         if (*aItr == acc) {
@@ -483,8 +526,7 @@ void Core::Squawk::removeAccountRequest(const QString& name)
     acc->deleteLater();
 }
 
-void Core::Squawk::subscribeContact(const QString& account, const QString& jid, const QString& reason)
-{
+void Core::Squawk::subscribeContact(const QString& account, const QString& jid, const QString& reason) {
     AccountsMap::const_iterator itr = amap.find(account);
     if (itr == amap.end()) {
         qDebug("An attempt to subscribe to the contact with non existing account, skipping");
@@ -494,8 +536,7 @@ void Core::Squawk::subscribeContact(const QString& account, const QString& jid,
     itr->second->subscribeToContact(jid, reason);
 }
 
-void Core::Squawk::unsubscribeContact(const QString& account, const QString& jid, const QString& reason)
-{
+void Core::Squawk::unsubscribeContact(const QString& account, const QString& jid, const QString& reason) {
     AccountsMap::const_iterator itr = amap.find(account);
     if (itr == amap.end()) {
         qDebug("An attempt to subscribe to the contact with non existing account, skipping");
@@ -505,8 +546,7 @@ void Core::Squawk::unsubscribeContact(const QString& account, const QString& jid
     itr->second->unsubscribeFromContact(jid, reason);
 }
 
-void Core::Squawk::removeContactRequest(const QString& account, const QString& jid)
-{
+void Core::Squawk::removeContactRequest(const QString& account, const QString& jid) {
     AccountsMap::const_iterator itr = amap.find(account);
     if (itr == amap.end()) {
         qDebug("An attempt to remove contact from non existing account, skipping");
@@ -516,8 +556,7 @@ void Core::Squawk::removeContactRequest(const QString& account, const QString& j
     itr->second->removeContactRequest(jid);
 }
 
-void Core::Squawk::addContactRequest(const QString& account, const QString& jid, const QString& name, const QSet<QString>& groups)
-{
+void Core::Squawk::addContactRequest(const QString& account, const QString& jid, const QString& name, const QSet<QString>& groups) {
     AccountsMap::const_iterator itr = amap.find(account);
     if (itr == amap.end()) {
         qDebug("An attempt to add contact to a non existing account, skipping");
@@ -527,26 +566,22 @@ void Core::Squawk::addContactRequest(const QString& account, const QString& jid,
     itr->second->addContactRequest(jid, name, groups);
 }
 
-void Core::Squawk::onAccountAddRoom(const QString jid, const QMap<QString, QVariant>& data)
-{
+void Core::Squawk::onAccountAddRoom(const QString jid, const QMap<QString, QVariant>& data) {
     Account* acc = static_cast<Account*>(sender());
     emit addRoom(acc->getName(), jid, data);
 }
 
-void Core::Squawk::onAccountChangeRoom(const QString jid, const QMap<QString, QVariant>& data)
-{
+void Core::Squawk::onAccountChangeRoom(const QString jid, const QMap<QString, QVariant>& data) {
     Account* acc = static_cast<Account*>(sender());
     emit changeRoom(acc->getName(), jid, data);
 }
 
-void Core::Squawk::onAccountRemoveRoom(const QString jid)
-{
+void Core::Squawk::onAccountRemoveRoom(const QString jid) {
     Account* acc = static_cast<Account*>(sender());
     emit removeRoom(acc->getName(), jid);
 }
 
-void Core::Squawk::setRoomJoined(const QString& account, const QString& jid, bool joined)
-{
+void Core::Squawk::setRoomJoined(const QString& account, const QString& jid, bool joined) {
     AccountsMap::const_iterator itr = amap.find(account);
     if (itr == amap.end()) {
         qDebug() << "An attempt to set jouned to the room" << jid << "of non existing account" << account << ", skipping";
@@ -555,8 +590,7 @@ void Core::Squawk::setRoomJoined(const QString& account, const QString& jid, boo
     itr->second->setRoomJoined(jid, joined);
 }
 
-void Core::Squawk::setRoomAutoJoin(const QString& account, const QString& jid, bool joined)
-{
+void Core::Squawk::setRoomAutoJoin(const QString& account, const QString& jid, bool joined) {
     AccountsMap::const_iterator itr = amap.find(account);
     if (itr == amap.end()) {
         qDebug() << "An attempt to set autoJoin to the room" << jid << "of non existing account" << account << ", skipping";
@@ -565,32 +599,36 @@ void Core::Squawk::setRoomAutoJoin(const QString& account, const QString& jid, b
     itr->second->setRoomAutoJoin(jid, joined);
 }
 
-void Core::Squawk::onAccountAddRoomPresence(const QString& jid, const QString& nick, const QMap<QString, QVariant>& data)
-{
+void Core::Squawk::setContactEncryption(const QString& account, const QString& jid, Shared::EncryptionProtocol value) {
+    AccountsMap::const_iterator itr = amap.find(account);
+    if (itr == amap.end()) {
+        qDebug() << "An attempt to set encryption to the contact" << jid << "of non existing account" << account << ", skipping";
+        return;
+    }
+    itr->second->setContactEncryption(jid, value);
+}
+
+void Core::Squawk::onAccountAddRoomPresence(const QString& jid, const QString& nick, const QMap<QString, QVariant>& data) {
     Account* acc = static_cast<Account*>(sender());
     emit addRoomParticipant(acc->getName(), jid, nick, data);
 }
 
-void Core::Squawk::onAccountChangeRoomPresence(const QString& jid, const QString& nick, const QMap<QString, QVariant>& data)
-{
+void Core::Squawk::onAccountChangeRoomPresence(const QString& jid, const QString& nick, const QMap<QString, QVariant>& data) {
     Account* acc = static_cast<Account*>(sender());
     emit changeRoomParticipant(acc->getName(), jid, nick, data);
 }
 
-void Core::Squawk::onAccountRemoveRoomPresence(const QString& jid, const QString& nick)
-{
+void Core::Squawk::onAccountRemoveRoomPresence(const QString& jid, const QString& nick) {
     Account* acc = static_cast<Account*>(sender());
     emit removeRoomParticipant(acc->getName(), jid, nick);
 }
 
-void Core::Squawk::onAccountChangeMessage(const QString& jid, const QString& id, const QMap<QString, QVariant>& data)
-{
+void Core::Squawk::onAccountChangeMessage(const QString& jid, const QString& id, const QMap<QString, QVariant>& data) {
     Account* acc = static_cast<Account*>(sender());
     emit changeMessage(acc->getName(), jid, id, data);
 }
 
-void Core::Squawk::removeRoomRequest(const QString& account, const QString& jid)
-{
+void Core::Squawk::removeRoomRequest(const QString& account, const QString& jid) {
     AccountsMap::const_iterator itr = amap.find(account);
     if (itr == amap.end()) {
         qDebug() << "An attempt to remove the room" << jid << "of non existing account" << account << ", skipping";
@@ -599,8 +637,7 @@ void Core::Squawk::removeRoomRequest(const QString& account, const QString& jid)
     itr->second->removeRoomRequest(jid);
 }
 
-void Core::Squawk::addRoomRequest(const QString& account, const QString& jid, const QString& nick, const QString& password, bool autoJoin)
-{
+void Core::Squawk::addRoomRequest(const QString& account, const QString& jid, const QString& nick, const QString& password, bool autoJoin) {
     AccountsMap::const_iterator itr = amap.find(account);
     if (itr == amap.end()) {
         qDebug() << "An attempt to add the room" << jid << "to non existing account" << account << ", skipping";
@@ -609,13 +646,11 @@ void Core::Squawk::addRoomRequest(const QString& account, const QString& jid, co
     itr->second->addRoomRequest(jid, nick, password, autoJoin);
 }
 
-void Core::Squawk::fileDownloadRequest(const QString& url)
-{
+void Core::Squawk::fileDownloadRequest(const QString& url) {
     network.downladFile(url);
 }
 
-void Core::Squawk::addContactToGroupRequest(const QString& account, const QString& jid, const QString& groupName)
-{
+void Core::Squawk::addContactToGroupRequest(const QString& account, const QString& jid, const QString& groupName) {
     AccountsMap::const_iterator itr = amap.find(account);
     if (itr == amap.end()) {
         qDebug() << "An attempt to add contact" << jid << "of non existing account" << account << "to the group" << groupName << ", skipping";
@@ -624,8 +659,7 @@ void Core::Squawk::addContactToGroupRequest(const QString& account, const QStrin
     itr->second->addContactToGroupRequest(jid, groupName);
 }
 
-void Core::Squawk::removeContactFromGroupRequest(const QString& account, const QString& jid, const QString& groupName)
-{
+void Core::Squawk::removeContactFromGroupRequest(const QString& account, const QString& jid, const QString& groupName) {
     AccountsMap::const_iterator itr = amap.find(account);
     if (itr == amap.end()) {
         qDebug() << "An attempt to add contact" << jid << "of non existing account" << account << "to the group" << groupName << ", skipping";
@@ -634,8 +668,7 @@ void Core::Squawk::removeContactFromGroupRequest(const QString& account, const Q
     itr->second->removeContactFromGroupRequest(jid, groupName);
 }
 
-void Core::Squawk::renameContactRequest(const QString& account, const QString& jid, const QString& newName)
-{
+void Core::Squawk::renameContactRequest(const QString& account, const QString& jid, const QString& newName) {
     AccountsMap::const_iterator itr = amap.find(account);
     if (itr == amap.end()) {
         qDebug() << "An attempt to rename contact" << jid << "of non existing account" << account << ", skipping";
@@ -644,138 +677,114 @@ void Core::Squawk::renameContactRequest(const QString& account, const QString& j
     itr->second->renameContactRequest(jid, newName);
 }
 
-void Core::Squawk::requestVCard(const QString& account, const QString& jid)
-{
+void Core::Squawk::requestInfo(const QString& account, const QString& jid) {
     AccountsMap::const_iterator itr = amap.find(account);
     if (itr == amap.end()) {
-        qDebug() << "An attempt to request" << jid << "vcard of non existing account" << account << ", skipping";
+        qDebug() << "An attempt to request info about" << jid << "of non existing account" << account << ", skipping";
         return;
     }
-    itr->second->requestVCard(jid);
+    itr->second->requestInfo(jid);
 }
 
-void Core::Squawk::uploadVCard(const QString& account, const Shared::VCard& card)
-{
+void Core::Squawk::updateInfo(const QString& account, const Shared::Info& info) {
     AccountsMap::const_iterator itr = amap.find(account);
     if (itr == amap.end()) {
-        qDebug() << "An attempt to upload vcard to non existing account" << account << ", skipping";
+        qDebug() << "An attempt to update info to non existing account" << account << ", skipping";
         return;
     }
-    itr->second->uploadVCard(card);
+    itr->second->updateInfo(info);
 }
 
-void Core::Squawk::responsePassword(const QString& account, const QString& password)
-{
+void Core::Squawk::readSettings() {
+    QSettings settings;
+    settings.beginGroup("core");
+    int size = settings.beginReadArray("accounts");
+    for (int i = 0; i < size; ++i) {
+        settings.setArrayIndex(i);
+        Shared::AccountPassword passwordType =
+            Shared::Global::fromInt<Shared::AccountPassword>(
+                settings.value("passwordType", static_cast<int>(Shared::AccountPassword::plain)).toInt()
+            );
+
+        QString name = settings.value("name").toString();
+        QString password = settings.value("password", "").toString();
+        if (passwordType == Shared::AccountPassword::jammed) {
+#ifdef WITH_SIMPLE_CRYPT
+            SimpleCrypt crypto(passwordHash);
+            password = crypto.decryptToString(password);
+#else
+            qDebug() << "The password for account" << name << "is jammed, but Squawk was compiled without SimpleCrypt support";
+            qDebug("Can not decode password, setting this account to always ask password mode");
+            passwordType = Shared::AccountPassword::alwaysAsk;
+#endif
+        }
+
+        addAccount(
+            settings.value("login").toString(), 
+            settings.value("server").toString(), 
+            password,
+            name,
+            settings.value("resource").toString(),
+            settings.value("active").toBool(),
+            passwordType
+        );
+    }
+    settings.endArray();
+    settings.endGroup();
+
+    qDebug() << "Squawk core is ready";
+    emit ready();
+}
+
+void Core::Squawk::onAccountNeedPassword() {
+    Account* acc = static_cast<Account*>(sender());
+    switch (acc->getPasswordType()) {
+        case Shared::AccountPassword::alwaysAsk:
+            emit requestPassword(acc->getName(), false);
+            break;
+        case Shared::AccountPassword::kwallet: {
+#ifdef WITH_KWALLET
+            if (kwallet.supportState() == PSE::KWallet::success) {
+                kwallet.requestReadPassword(acc->getName());
+            } else {
+#endif
+                emit requestPassword(acc->getName(), false);
+#ifdef WITH_KWALLET
+            }
+#endif
+            break;
+        }
+        default:
+            break;      //should never happen;
+    }
+}
+
+void Core::Squawk::onWalletRejectPassword(const QString& login) {
+    emit requestPassword(login, false);
+}
+
+void Core::Squawk::responsePassword(const QString& account, const QString& password) {
     AccountsMap::const_iterator itr = amap.find(account);
     if (itr == amap.end()) {
         qDebug() << "An attempt to set password to non existing account" << account << ", skipping";
         return;
     }
-    itr->second->setPassword(password);
+    Account* acc = itr->second;
+    acc->setPassword(password);
     emit changeAccount(account, {{"password", password}});
-    accountReady();
+    if (state != Shared::Availability::offline && acc->getActive())
+        acc->connect();
 }
 
-void Core::Squawk::readSettings()
-{
-    QSettings settings;
-    settings.beginGroup("core");
-    int size = settings.beginReadArray("accounts");
-    waitingForAccounts = size;
-    for (int i = 0; i < size; ++i) {
-        settings.setArrayIndex(i);
-        parseAccount(
-            settings.value("login").toString(), 
-            settings.value("server").toString(), 
-            settings.value("password", "").toString(), 
-            settings.value("name").toString(),
-            settings.value("resource").toString(),
-            Shared::Global::fromInt<Shared::AccountPassword>(settings.value("passwordType", static_cast<int>(Shared::AccountPassword::plain)).toInt())
-        );
-    }
-    settings.endArray();
-    settings.endGroup();
-}
-
-void Core::Squawk::accountReady()
-{
-    --waitingForAccounts;
-    
-    if (waitingForAccounts == 0) {
-        emit ready();
-    }
-}
-
-void Core::Squawk::parseAccount(
-    const QString& login, 
-    const QString& server, 
-    const QString& password, 
-    const QString& name, 
-    const QString& resource, 
-    Shared::AccountPassword passwordType
-)
-{
-    switch (passwordType) {
-        case Shared::AccountPassword::plain:
-            addAccount(login, server, password, name, resource, passwordType);
-            accountReady();
-            break;
-        case Shared::AccountPassword::jammed: {
-            SimpleCrypt crypto(passwordHash);
-            QString decrypted = crypto.decryptToString(password);
-            addAccount(login, server, decrypted, name, resource, passwordType);
-            accountReady();
-        }
-            break;
-        case Shared::AccountPassword::alwaysAsk: 
-            addAccount(login, server, QString(), name, resource, passwordType);
-            emit requestPassword(name);
-            break;
-        case Shared::AccountPassword::kwallet: {
-            addAccount(login, server, QString(), name, resource, passwordType);
-#ifdef WITH_KWALLET
-            if (kwallet.supportState() == PSE::KWallet::success) {
-                kwallet.requestReadPassword(name);
-            } else {
-#endif
-                emit requestPassword(name);
-#ifdef WITH_KWALLET
-            }
-#endif
-        }
-    }
-}
-
-void Core::Squawk::onWalletRejectPassword(const QString& login)
-{
-    emit requestPassword(login);
-}
-
-void Core::Squawk::onWalletResponsePassword(const QString& login, const QString& password)
-{
-    AccountsMap::const_iterator itr = amap.find(login);
-    if (itr == amap.end()) {
-        qDebug() << "An attempt to set password to non existing account" << login << ", skipping";
-        return;
-    }
-    itr->second->setPassword(password);
-    emit changeAccount(login, {{"password", password}});
-    accountReady();
-}
-
-void Core::Squawk::onAccountUploadFileError(const QString& jid, const QString id, const QString& errorText)
-{
+void Core::Squawk::onAccountUploadFileError(const QString& jid, const QString id, const QString& errorText) {
     Account* acc = static_cast<Account*>(sender());
     emit fileError({{acc->getName(), jid, id}}, errorText, true);
 }
 
-void Core::Squawk::onLocalPathInvalid(const QString& path)
-{
+void Core::Squawk::onLocalPathInvalid(const QString& path) {
     std::list<Shared::MessageInfo> list = network.reportPathInvalid(path);
     
-    QMap<QString, QVariant> data({
-        {"attachPath", ""}
-    });
+    QMap<QString, QVariant> data({{"attachPath", ""}});
     for (const Shared::MessageInfo& info : list) {
         AccountsMap::const_iterator itr = amap.find(info.account);
         if (itr != amap.end()) {
@@ -785,3 +794,8 @@ void Core::Squawk::onLocalPathInvalid(const QString& path)
         }
     }
 }
+
+void Core::Squawk::changeDownloadsPath(const QString& path) {
+    network.moveFilesDirectory(path);
+}
+

core/squawk.h

@@ -31,17 +31,18 @@
 #include "shared/enums.h"
 #include "shared/message.h"
 #include "shared/global.h"
-#include "networkaccess.h"
-#include "external/simpleCrypt/simplecrypt.h"
+#include "shared/info.h"
+#include "shared/clientinfo.h"
+
+#include <core/components/clientcache.h>
+#include <core/components/networkaccess.h>
 
 #ifdef WITH_KWALLET
 #include "passwordStorageEngines/kwallet.h"
 #endif
 
-namespace Core
-{
-class Squawk : public QObject
-{
+namespace Core {
+class Squawk : public QObject {
     Q_OBJECT
 
 public:
@@ -84,9 +85,9 @@ signals:
     void fileDownloadComplete(const std::list<Shared::MessageInfo> msgs, const QString& path);
     void fileUploadComplete(const std::list<Shared::MessageInfo> msgs, const QString& url, const QString& path);
     
-    void responseVCard(const QString& jid, const Shared::VCard& card);
+    void responseInfo(const Shared::Info& info);
     void changeMessage(const QString& account, const QString& jid, const QString& id, const QMap<QString, QVariant>& data);
-    void requestPassword(const QString& account);
+    void requestPassword(const QString& account, bool authernticationError);
     
 public slots:
     void start();
@@ -101,6 +102,7 @@ public slots:
     void changeState(Shared::Availability state);
     
     void sendMessage(const QString& account, const Shared::Message& data);
+    void replaceMessage(const QString& account, const QString& originalId, const Shared::Message& data);
     void resendMessage(const QString& account, const QString& jid, const QString& id);
     void requestArchive(const QString& account, const QString& jid, int count, const QString& before);
     
@@ -111,6 +113,7 @@ public slots:
     void removeContactRequest(const QString& account, const QString& jid);
     void renameContactRequest(const QString& account, const QString& jid, const QString& newName);
     void addContactRequest(const QString& account, const QString& jid, const QString& name, const QSet<QString>& groups);
+    void setContactEncryption(const QString& account, const QString& jid, Shared::EncryptionProtocol value);
     
     void setRoomJoined(const QString& account, const QString& jid, bool joined);
     void setRoomAutoJoin(const QString& account, const QString& jid, bool joined);
@@ -119,10 +122,11 @@ public slots:
     
     void fileDownloadRequest(const QString& url);
     
-    void requestVCard(const QString& account, const QString& jid);
-    void uploadVCard(const QString& account, const Shared::VCard& card);
+    void requestInfo(const QString& account, const QString& jid);
+    void updateInfo(const QString& account, const Shared::Info& info);
     void responsePassword(const QString& account, const QString& password);
     void onLocalPathInvalid(const QString& path);
+    void changeDownloadsPath(const QString& path);
     
 private:
     typedef std::deque<Account*> Accounts;
@@ -132,13 +136,14 @@ private:
     AccountsMap amap;
     Shared::Availability state;
     NetworkAccess network;
-    uint8_t waitingForAccounts;
     bool isInitialized;
 
 #ifdef WITH_KWALLET
     PSE::KWallet kwallet;
 #endif
 
+    ClientCache clientCache;
+    
 private slots:
     void addAccount(
         const QString& login, 
@@ -146,6 +151,7 @@ private slots:
         const QString& password, 
         const QString& name, 
         const QString& resource, 
+        bool active,
         Shared::AccountPassword passwordType
     );
     
@@ -170,24 +176,17 @@ private slots:
     void onAccountChangeRoomPresence(const QString& jid, const QString& nick, const QMap<QString, QVariant>& data);
     void onAccountRemoveRoomPresence(const QString& jid, const QString& nick);
     void onAccountChangeMessage(const QString& jid, const QString& id, const QMap<QString, QVariant>& data);
+    void onAccountNeedPassword();
     
     void onAccountUploadFileError(const QString& jid, const QString id, const QString& errorText);
     
     void onWalletOpened(bool success);
-    void onWalletResponsePassword(const QString& login, const QString& password);
     void onWalletRejectPassword(const QString& login);
 
+    void onAccountInfoDiscovered(const QString& address, const QString& node, const std::set<Shared::Identity>& identities, const std::set<QString>& features);
+    
 private:
     void readSettings();
-    void accountReady();
-    void parseAccount(
-        const QString& login, 
-        const QString& server, 
-        const QString& password, 
-        const QString& name, 
-        const QString& resource, 
-        Shared::AccountPassword passwordType
-    );
     
     static const quint64 passwordHash = 0x08d054225ac4871d;
 };

core/storage.cpp

@@ -1,184 +0,0 @@
-/*
- * Squawk messenger. 
- * Copyright (C) 2019 Yury Gubich <blue@macaw.me>
- * 
- * This program is free software: you can redistribute it and/or modify
- * it under the terms of the GNU General Public License as published by
- * the Free Software Foundation, either version 3 of the License, or
- * (at your option) any later version.
- * 
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- * 
- * You should have received a copy of the GNU General Public License
- * along with this program.  If not, see <http://www.gnu.org/licenses/>.
- */
-
-#include <QStandardPaths>
-#include <QDir>
-
-#include "storage.h"
-
-Core::Storage::Storage(const QString& p_name):
-    name(p_name),
-    opened(false),
-    environment(),
-    base()
-{
-}
-
-Core::Storage::~Storage()
-{
-    close();
-}
-
-void Core::Storage::open()
-{
-    if (!opened) {
-        mdb_env_create(&environment);
-        QString path(QStandardPaths::writableLocation(QStandardPaths::CacheLocation));
-        path += "/" + name;
-        QDir cache(path);
-        
-        if (!cache.exists()) {
-            bool res = cache.mkpath(path);
-            if (!res) {
-                throw Archive::Directory(path.toStdString());
-            }
-        }
-        
-        mdb_env_set_maxdbs(environment, 1);
-        mdb_env_set_mapsize(environment, 10UL * 1024UL * 1024UL);
-        mdb_env_open(environment, path.toStdString().c_str(), 0, 0664);
-        
-        MDB_txn *txn;
-        mdb_txn_begin(environment, NULL, 0, &txn);
-        mdb_dbi_open(txn, "base", MDB_CREATE, &base);
-        mdb_txn_commit(txn);
-        opened = true;
-    }
-}
-
-void Core::Storage::close()
-{
-    if (opened) {
-        mdb_dbi_close(environment, base);
-        mdb_env_close(environment);
-        opened = false;
-    }
-}
-
-void Core::Storage::addRecord(const QString& key, const QString& value)
-{
-    if (!opened) {
-        throw Archive::Closed("addRecord", name.toStdString());
-    }
-    const std::string& id = key.toStdString();
-    const std::string& val = value.toStdString();
-    
-    MDB_val lmdbKey, lmdbData;
-    lmdbKey.mv_size = id.size();
-    lmdbKey.mv_data = (char*)id.c_str();
-    lmdbData.mv_size = val.size();
-    lmdbData.mv_data = (char*)val.c_str();
-    MDB_txn *txn;
-    mdb_txn_begin(environment, NULL, 0, &txn);
-    int rc;
-    rc = mdb_put(txn, base, &lmdbKey, &lmdbData, MDB_NOOVERWRITE);
-    if (rc != 0) {
-        mdb_txn_abort(txn);
-        if (rc == MDB_KEYEXIST) {
-            throw Archive::Exist(name.toStdString(), id);
-        } else {
-            throw Archive::Unknown(name.toStdString(), mdb_strerror(rc));
-        }
-    } else {
-        mdb_txn_commit(txn);
-    }
-}
-
-void Core::Storage::changeRecord(const QString& key, const QString& value)
-{
-    if (!opened) {
-        throw Archive::Closed("changeRecord", name.toStdString());
-    }
-    const std::string& id = key.toStdString();
-    const std::string& val = value.toStdString();
-    
-    MDB_val lmdbKey, lmdbData;
-    lmdbKey.mv_size = id.size();
-    lmdbKey.mv_data = (char*)id.c_str();
-    lmdbData.mv_size = val.size();
-    lmdbData.mv_data = (char*)val.c_str();
-    MDB_txn *txn;
-    mdb_txn_begin(environment, NULL, 0, &txn);
-    int rc;
-    rc = mdb_put(txn, base, &lmdbKey, &lmdbData, 0);
-    if (rc != 0) {
-        mdb_txn_abort(txn);
-        if (rc) {
-            throw Archive::Unknown(name.toStdString(), mdb_strerror(rc));
-        }
-    } else {
-        mdb_txn_commit(txn);
-    }
-}
-
-QString Core::Storage::getRecord(const QString& key) const
-{
-    if (!opened) {
-        throw Archive::Closed("addElement", name.toStdString());
-    }
-    const std::string& id = key.toStdString();
-    
-    MDB_val lmdbKey, lmdbData;
-    lmdbKey.mv_size = id.size();
-    lmdbKey.mv_data = (char*)id.c_str();
-    
-    MDB_txn *txn;
-    int rc;
-    mdb_txn_begin(environment, NULL, MDB_RDONLY, &txn);
-    rc = mdb_get(txn, base, &lmdbKey, &lmdbData);
-    if (rc) {
-        mdb_txn_abort(txn);
-        if (rc == MDB_NOTFOUND) {
-            throw Archive::NotFound(id, name.toStdString());
-        } else {
-            throw Archive::Unknown(name.toStdString(), mdb_strerror(rc));
-        }
-    } else {
-        std::string sId((char*)lmdbData.mv_data, lmdbData.mv_size);
-        QString value(sId.c_str());
-        mdb_txn_abort(txn);
-        return value;
-    }
-}
-
-void Core::Storage::removeRecord(const QString& key)
-{
-    if (!opened) {
-        throw Archive::Closed("addElement", name.toStdString());
-    }
-    const std::string& id = key.toStdString();
-    
-    MDB_val lmdbKey;
-    lmdbKey.mv_size = id.size();
-    lmdbKey.mv_data = (char*)id.c_str();
-    
-    MDB_txn *txn;
-    int rc;
-    mdb_txn_begin(environment, NULL, 0, &txn);
-    rc = mdb_del(txn, base, &lmdbKey, NULL);
-    if (rc) {
-        mdb_txn_abort(txn);
-        if (rc == MDB_NOTFOUND) {
-            throw Archive::NotFound(id, name.toStdString());
-        } else {
-            throw Archive::Unknown(name.toStdString(), mdb_strerror(rc));
-        }
-    } else {
-        mdb_txn_commit(txn);
-    }
-}

core/urlstorage.cpp

@@ -1,491 +0,0 @@
-/*
- * Squawk messenger. 
- * Copyright (C) 2019 Yury Gubich <blue@macaw.me>
- * 
- * This program is free software: you can redistribute it and/or modify
- * it under the terms of the GNU General Public License as published by
- * the Free Software Foundation, either version 3 of the License, or
- * (at your option) any later version.
- * 
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- * 
- * You should have received a copy of the GNU General Public License
- * along with this program.  If not, see <http://www.gnu.org/licenses/>.
- */
-
-#include <QStandardPaths>
-#include <QDir>
-#include <QDebug>
-
-#include "urlstorage.h"
-
-Core::UrlStorage::UrlStorage(const QString& p_name):
-    name(p_name),
-    opened(false),
-    environment(),
-    base(),
-    map()
-{
-}
-
-Core::UrlStorage::~UrlStorage()
-{
-    close();
-}
-
-void Core::UrlStorage::open()
-{
-    if (!opened) {
-        mdb_env_create(&environment);
-        QString path(QStandardPaths::writableLocation(QStandardPaths::CacheLocation));
-        path += "/" + name;
-        QDir cache(path);
-        
-        if (!cache.exists()) {
-            bool res = cache.mkpath(path);
-            if (!res) {
-                throw Archive::Directory(path.toStdString());
-            }
-        }
-        
-        mdb_env_set_maxdbs(environment, 2);
-        mdb_env_set_mapsize(environment, 10UL * 1024UL * 1024UL);
-        mdb_env_open(environment, path.toStdString().c_str(), 0, 0664);
-        
-        MDB_txn *txn;
-        mdb_txn_begin(environment, NULL, 0, &txn);
-        mdb_dbi_open(txn, "base", MDB_CREATE, &base);
-        mdb_dbi_open(txn, "map", MDB_CREATE, &map);
-        mdb_txn_commit(txn);
-        opened = true;
-    }
-}
-
-void Core::UrlStorage::close()
-{
-    if (opened) {
-        mdb_dbi_close(environment, map);
-        mdb_dbi_close(environment, base);
-        mdb_env_close(environment);
-        opened = false;
-    }
-}
-
-void Core::UrlStorage::writeInfo(const QString& key, const Core::UrlStorage::UrlInfo& info, bool overwrite)
-{
-    MDB_txn *txn;
-    mdb_txn_begin(environment, NULL, 0, &txn);
-    
-    try {
-        writeInfo(key, info, txn, overwrite);
-        mdb_txn_commit(txn);
-    } catch (...) {
-        mdb_txn_abort(txn);
-        throw;
-    }
-}
-
-void Core::UrlStorage::writeInfo(const QString& key, const Core::UrlStorage::UrlInfo& info, MDB_txn* txn, bool overwrite)
-{
-    QByteArray ba;
-    QDataStream ds(&ba, QIODevice::WriteOnly);
-    info.serialize(ds);
-    
-    const std::string& id = key.toStdString();
-    MDB_val lmdbKey, lmdbData;
-    lmdbKey.mv_size = id.size();
-    lmdbKey.mv_data = (char*)id.c_str();
-    lmdbData.mv_size = ba.size();
-    lmdbData.mv_data = (uint8_t*)ba.data();
-    
-    int rc;
-    rc = mdb_put(txn, base, &lmdbKey, &lmdbData, overwrite ? 0 : MDB_NOOVERWRITE);
-    
-    if (rc != 0) {
-        if (rc == MDB_KEYEXIST) {
-            if (!overwrite) {
-                throw Archive::Exist(name.toStdString(), id);
-            }
-        } else {
-            throw Archive::Unknown(name.toStdString(), mdb_strerror(rc));
-        }
-    }
-    
-    if (info.hasPath()) {
-        std::string sp = info.getPath().toStdString();
-        lmdbData.mv_size = sp.size();
-        lmdbData.mv_data = (char*)sp.c_str();
-        rc = mdb_put(txn, map, &lmdbData, &lmdbKey, 0);
-        if (rc != 0) {
-            throw Archive::Unknown(name.toStdString(), mdb_strerror(rc));
-        }
-    }
-}
-
-void Core::UrlStorage::readInfo(const QString& key, Core::UrlStorage::UrlInfo& info, MDB_txn* txn)
-{
-    const std::string& id = key.toStdString();
-    MDB_val lmdbKey, lmdbData;
-    lmdbKey.mv_size = id.size();
-    lmdbKey.mv_data = (char*)id.c_str();
-    int rc = mdb_get(txn, base, &lmdbKey, &lmdbData);
-    
-    if (rc == 0) {
-        QByteArray ba((char*)lmdbData.mv_data, lmdbData.mv_size);
-        QDataStream ds(&ba, QIODevice::ReadOnly);
-        
-        info.deserialize(ds);
-    } else if (rc == MDB_NOTFOUND) {
-        throw Archive::NotFound(id, name.toStdString());
-    } else {
-        throw Archive::Unknown(name.toStdString(), mdb_strerror(rc));
-    }
-}
-
-void Core::UrlStorage::readInfo(const QString& key, Core::UrlStorage::UrlInfo& info)
-{
-    MDB_txn *txn;
-    mdb_txn_begin(environment, NULL, MDB_RDONLY, &txn);
-    
-    try {
-        readInfo(key, info, txn);
-        mdb_txn_commit(txn);
-    } catch (...) {
-        mdb_txn_abort(txn);
-        throw;
-    }
-}
-
-void Core::UrlStorage::addFile(const QString& url)
-{
-    if (!opened) {
-        throw Archive::Closed("addFile(no message, no path)", name.toStdString());
-    }
-    
-    addToInfo(url, "", "", "");
-}
-
-void Core::UrlStorage::addFile(const QString& url, const QString& path)
-{
-    if (!opened) {
-        throw Archive::Closed("addFile(no message, with path)", name.toStdString());
-    }
-    
-    addToInfo(url, "", "", "", path);
-}
-
-void Core::UrlStorage::addFile(const QString& url, const QString& account, const QString& jid, const QString& id)
-{
-    if (!opened) {
-        throw Archive::Closed("addFile(with message, no path)", name.toStdString());
-    }
-    
-    addToInfo(url, account, jid, id);
-}
-
-void Core::UrlStorage::addFile(const QString& url, const QString& path, const QString& account, const QString& jid, const QString& id)
-{
-    if (!opened) {
-        throw Archive::Closed("addFile(with message, with path)", name.toStdString());
-    }
-    
-    addToInfo(url, account, jid, id, path);
-}
-
-void Core::UrlStorage::addFile(const std::list<Shared::MessageInfo>& msgs, const QString& url, const QString& path)
-{
-    if (!opened) {
-        throw Archive::Closed("addFile(with list)", name.toStdString());
-    }
-    
-    UrlInfo info (path, msgs);
-    writeInfo(url, info, true);;
-}
-
-QString Core::UrlStorage::addMessageAndCheckForPath(const QString& url, const QString& account, const QString& jid, const QString& id)
-{
-    if (!opened) {
-        throw Archive::Closed("addMessageAndCheckForPath", name.toStdString());
-    }
-    
-    return addToInfo(url, account, jid, id).getPath();
-}
-
-Core::UrlStorage::UrlInfo Core::UrlStorage::addToInfo(const QString& url, const QString& account, const QString& jid, const QString& id, const QString& path)
-{
-    UrlInfo info;
-    MDB_txn *txn;
-    mdb_txn_begin(environment, NULL, 0, &txn);
-    
-    try {
-        readInfo(url, info, txn);
-    } catch (const Archive::NotFound& e) {
-        
-    } catch (...) {
-        mdb_txn_abort(txn);
-        throw;
-    }
-    
-    bool pathChange = false;
-    bool listChange = false;
-    if (path != "-s") {
-        if (info.getPath() != path) {
-            info.setPath(path);
-            pathChange = true;
-        }
-    }
-    
-    if (account.size() > 0 && jid.size() > 0 && id.size() > 0) {
-        listChange = info.addMessage(account, jid, id);
-    }
-    
-    if (pathChange || listChange) {
-        try {
-            writeInfo(url, info, txn, true);
-            mdb_txn_commit(txn);
-        } catch (...) {
-            mdb_txn_abort(txn);
-            throw;
-        }
-    } else {
-        mdb_txn_abort(txn);
-    }
-    
-    return info;
-}
-
-std::list<Shared::MessageInfo> Core::UrlStorage::setPath(const QString& url, const QString& path)
-{
-    std::list<Shared::MessageInfo> list;
-    
-    MDB_txn *txn;
-    mdb_txn_begin(environment, NULL, 0, &txn);
-    UrlInfo info;
-    
-    try {
-        readInfo(url, info, txn);
-        info.getMessages(list);
-    } catch (const Archive::NotFound& e) {
-    } catch (...) {
-        mdb_txn_abort(txn);
-        throw;
-    }
-    
-    info.setPath(path);
-    try {
-        writeInfo(url, info, txn, true);
-        mdb_txn_commit(txn);
-    } catch (...) {
-        mdb_txn_abort(txn);
-        throw;
-    }
-    
-    return list;
-}
-
-std::list<Shared::MessageInfo> Core::UrlStorage::removeFile(const QString& url)
-{
-    std::list<Shared::MessageInfo> list;
-    
-    MDB_txn *txn;
-    mdb_txn_begin(environment, NULL, 0, &txn);
-    UrlInfo info;
-    
-    try {
-        std::string id = url.toStdString();
-        readInfo(url, info, txn);
-        info.getMessages(list);
-        
-        MDB_val lmdbKey;
-        lmdbKey.mv_size = id.size();
-        lmdbKey.mv_data = (char*)id.c_str();
-        int rc = mdb_del(txn, base, &lmdbKey, NULL);
-        if (rc != 0) {
-            throw Archive::Unknown(name.toStdString(), mdb_strerror(rc));
-        }
-        
-        if (info.hasPath()) {
-            std::string path = info.getPath().toStdString();
-            lmdbKey.mv_size = path.size();
-            lmdbKey.mv_data = (char*)path.c_str();
-            
-            int rc = mdb_del(txn, map, &lmdbKey, NULL);
-            if (rc != 0) {
-                throw Archive::Unknown(name.toStdString(), mdb_strerror(rc));
-            }
-        }
-        mdb_txn_commit(txn);
-    } catch (...) {
-        mdb_txn_abort(txn);
-        throw;
-    }
-    
-    return list;
-}
-
-std::list<Shared::MessageInfo> Core::UrlStorage::deletedFile(const QString& path)
-{
-    std::list<Shared::MessageInfo> list;
-    
-    MDB_txn *txn;
-    mdb_txn_begin(environment, NULL, 0, &txn);
-    
-    try {
-        std::string spath = path.toStdString();
-        
-        MDB_val lmdbKey, lmdbData;
-        lmdbKey.mv_size = spath.size();
-        lmdbKey.mv_data = (char*)spath.c_str();
-        
-        QString url;
-        int rc = mdb_get(txn, map, &lmdbKey, &lmdbData);
-        
-        if (rc == 0) {
-            std::string surl((char*)lmdbData.mv_data, lmdbData.mv_size);
-            url = QString(surl.c_str());
-        } else if (rc == MDB_NOTFOUND) {
-            qDebug() << "Have been asked to remove file" << path << ", which isn't in the database, skipping";
-            mdb_txn_abort(txn);
-            return list;
-        } else {
-            throw Archive::Unknown(name.toStdString(), mdb_strerror(rc));
-        }
-        
-        UrlInfo info;
-        std::string id = url.toStdString();
-        readInfo(url, info, txn);
-        info.getMessages(list);
-        info.setPath(QString());
-        writeInfo(url, info, txn, true);
-        
-        rc = mdb_del(txn, map, &lmdbKey, NULL);
-        if (rc != 0) {
-            throw Archive::Unknown(name.toStdString(), mdb_strerror(rc));
-        }
-        
-        mdb_txn_commit(txn);
-    } catch (...) {
-        mdb_txn_abort(txn);
-        throw;
-    }
-    
-    return list;
-}
-
-
-QString Core::UrlStorage::getUrl(const QString& path)
-{
-    std::list<Shared::MessageInfo> list;
-    
-    MDB_txn *txn;
-    mdb_txn_begin(environment, NULL, MDB_RDONLY, &txn);
-    
-    std::string spath = path.toStdString();
-    
-    MDB_val lmdbKey, lmdbData;
-    lmdbKey.mv_size = spath.size();
-    lmdbKey.mv_data = (char*)spath.c_str();
-    
-    QString url;
-    int rc = mdb_get(txn, map, &lmdbKey, &lmdbData);
-    
-    if (rc == 0) {
-        std::string surl((char*)lmdbData.mv_data, lmdbData.mv_size);
-        url = QString(surl.c_str());
-        
-        mdb_txn_abort(txn);
-        return url;
-    } else if (rc == MDB_NOTFOUND) {
-        mdb_txn_abort(txn);
-        throw Archive::NotFound(spath, name.toStdString());
-    } else {
-        mdb_txn_abort(txn);
-        throw Archive::Unknown(name.toStdString(), mdb_strerror(rc));
-    }
-}
-
-std::pair<QString, std::list<Shared::MessageInfo>> Core::UrlStorage::getPath(const QString& url)
-{
-    UrlInfo info;
-    readInfo(url, info);
-    std::list<Shared::MessageInfo> container;
-    info.getMessages(container);
-    return std::make_pair(info.getPath(), container);
-}
-
-Core::UrlStorage::UrlInfo::UrlInfo():
-    localPath(),
-    messages() {}
-
-Core::UrlStorage::UrlInfo::UrlInfo(const QString& path):
-    localPath(path),
-    messages() {}
- 
-Core::UrlStorage::UrlInfo::UrlInfo(const QString& path, const std::list<Shared::MessageInfo>& msgs):
-    localPath(path),
-    messages(msgs) {}
- 
-Core::UrlStorage::UrlInfo::~UrlInfo() {}
- 
-bool Core::UrlStorage::UrlInfo::addMessage(const QString& acc, const QString& jid, const QString& id)
-{
-    for (const Shared::MessageInfo& info : messages) {
-        if (info.account == acc && info.jid == jid && info.messageId == id) {
-            return false;
-        }
-    }
-    messages.emplace_back(acc, jid, id);
-    return true;
-}
-
-void Core::UrlStorage::UrlInfo::serialize(QDataStream& data) const
-{
-    data << localPath;
-    std::list<Shared::MessageInfo>::size_type size = messages.size();
-    data << quint32(size);
-    for (const Shared::MessageInfo& info : messages) {
-        data << info.account;
-        data << info.jid;
-        data << info.messageId;
-    }
-}
-
-void Core::UrlStorage::UrlInfo::deserialize(QDataStream& data)
-{
-    data >> localPath;
-    quint32 size;
-    data >> size;
-    for (quint32 i = 0; i < size; ++i) {
-        messages.emplace_back();
-        Shared::MessageInfo& info = messages.back();
-        data >> info.account;
-        data >> info.jid;
-        data >> info.messageId;
-    }
-}
-
-void Core::UrlStorage::UrlInfo::getMessages(std::list<Shared::MessageInfo>& container) const
-{
-    for (const Shared::MessageInfo& info : messages) {
-        container.emplace_back(info);
-    }
-}
-
-QString Core::UrlStorage::UrlInfo::getPath() const
-{
-    return localPath;
-}
-
-bool Core::UrlStorage::UrlInfo::hasPath() const
-{
-    return localPath.size() > 0;
-}
-
-
-void Core::UrlStorage::UrlInfo::setPath(const QString& path)
-{
-    localPath = path;
-}

external/lmdbal

@@ -0,0 +1 @@
+Subproject commit d62eddc47edbec9f8c071459e045578f61ab58df

external/qxmpp

@@ -1 +1 @@
-Subproject commit fe83e9c3d42c3becf682e2b5ecfc9d77b24c614f
+Subproject commit 0cd7379bd78aa01af7e84f2fad6269ef0c0ba49c

external/simpleCrypt/CMakeLists.txt

@@ -1,4 +1,4 @@
-cmake_minimum_required(VERSION 3.0)
+cmake_minimum_required(VERSION 3.5)
 project(simplecrypt LANGUAGES CXX)
 
 set(CMAKE_AUTOMOC ON)

external/simpleCrypt/simplecrypt.cpp

@@ -19,7 +19,7 @@
  DISCLAIMED. IN NO EVENT SHALL ANDRE SOMERS BE LIABLE FOR ANY
  DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
  (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
- LOSS OF USE, DATA, OR #######; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND
+ LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND
  ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
  (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
  SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.

external/simpleCrypt/simplecrypt.h

@@ -19,7 +19,7 @@
  DISCLAIMED. IN NO EVENT SHALL ANDRE SOMERS BE LIABLE FOR ANY
  DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
  (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
- LOSS OF USE, DATA, OR #######; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND
+ LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND
  ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
  (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
  SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.

main/CMakeLists.txt

@@ -0,0 +1,14 @@
+set(SOURCE_FILES
+    main.cpp
+    application.cpp
+    dialogqueue.cpp
+    root.cpp
+)
+
+set(HEADER_FILES
+    application.h
+    dialogqueue.h
+    root.h
+)
+
+target_sources(squawk PRIVATE ${SOURCE_FILES})

main/application.cpp

@@ -0,0 +1,666 @@
+// Squawk messenger. 
+// Copyright (C) 2019  Yury Gubich <blue@macaw.me>
+// 
+// This program is free software: you can redistribute it and/or modify
+// it under the terms of the GNU General Public License as published by
+// the Free Software Foundation, either version 3 of the License, or
+// (at your option) any later version.
+// 
+// This program is distributed in the hope that it will be useful,
+// but WITHOUT ANY WARRANTY; without even the implied warranty of
+// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+// GNU General Public License for more details.
+// 
+// You should have received a copy of the GNU General Public License
+// along with this program.  If not, see <http://www.gnu.org/licenses/>.
+
+#include "application.h"
+
+Application::Application(Core::Squawk* p_core):
+    QObject(),
+    availability(Shared::Availability::offline),
+    core(p_core),
+    squawk(nullptr),
+    notifications("org.freedesktop.Notifications", "/org/freedesktop/Notifications", "org.freedesktop.Notifications"),
+    roster(),
+    conversations(),
+    dialogueQueue(roster),
+    nowQuitting(false),
+    destroyingSquawk(false),
+    storage(),
+    trayIcon(nullptr),
+    actionQuit(Shared::icon("application-exit"), tr("Quit")),
+    actionToggle(QApplication::windowIcon(), tr("Minimize to tray")),
+    expandedPaths()
+{
+    connect(&actionQuit, &QAction::triggered, this, &Application::quit);
+    connect(&actionToggle, &QAction::triggered, this, &Application::toggleSquawk);
+
+    connect(&roster, &Models::Roster::unnoticedMessage, this, &Application::notify);
+    connect(&roster, &Models::Roster::unreadMessagesCountChanged, this, &Application::unreadMessagesCountChanged);
+    connect(&roster, &Models::Roster::addedElement, this, &Application::onAddedElement);
+
+
+    //connecting myself to the backend
+    connect(this, &Application::changeState, core, &Core::Squawk::changeState);
+    connect(this, &Application::setRoomJoined, core, &Core::Squawk::setRoomJoined);
+    connect(this, &Application::setRoomAutoJoin, core, &Core::Squawk::setRoomAutoJoin);
+    connect(this, &Application::subscribeContact, core, &Core::Squawk::subscribeContact);
+    connect(this, &Application::unsubscribeContact, core, &Core::Squawk::unsubscribeContact);
+    connect(this, &Application::replaceMessage, core, &Core::Squawk::replaceMessage);
+    connect(this, &Application::sendMessage, core, &Core::Squawk::sendMessage);
+    connect(this, &Application::resendMessage, core, &Core::Squawk::resendMessage);
+    connect(this, &Application::setEncryption, core, &Core::Squawk::setContactEncryption);
+    connect(&roster, &Models::Roster::requestArchive,
+            std::bind(&Core::Squawk::requestArchive, core, std::placeholders::_1, std::placeholders::_2, 20, std::placeholders::_3));
+
+    connect(&dialogueQueue, &DialogQueue::modifyAccountRequest, core, &Core::Squawk::modifyAccountRequest);
+    connect(&dialogueQueue, &DialogQueue::responsePassword, core, &Core::Squawk::responsePassword);
+    connect(&dialogueQueue, &DialogQueue::disconnectAccount, core, &Core::Squawk::disconnectAccount);
+
+    connect(&roster, &Models::Roster::fileDownloadRequest, core, &Core::Squawk::fileDownloadRequest);
+    connect(&roster, &Models::Roster::localPathInvalid, core, &Core::Squawk::onLocalPathInvalid);
+
+
+    //coonecting backend to myself
+    connect(core, &Core::Squawk::stateChanged, this, &Application::stateChanged);
+
+    connect(core, &Core::Squawk::accountMessage, &roster, &Models::Roster::addMessage);
+    connect(core, &Core::Squawk::responseArchive, &roster, &Models::Roster::responseArchive);
+    connect(core, &Core::Squawk::changeMessage, &roster, &Models::Roster::changeMessage);
+
+    connect(core, &Core::Squawk::newAccount, &roster, &Models::Roster::addAccount);
+    connect(core, &Core::Squawk::changeAccount, this, &Application::changeAccount);
+    connect(core, &Core::Squawk::removeAccount, this, &Application::removeAccount);
+
+    connect(core, &Core::Squawk::addContact, &roster, &Models::Roster::addContact);
+    connect(core, &Core::Squawk::addGroup, this, &Application::addGroup);
+    connect(core, &Core::Squawk::removeGroup, &roster, &Models::Roster::removeGroup);
+    connect(core, qOverload<const QString&, const QString&>(&Core::Squawk::removeContact),
+            &roster, qOverload<const QString&, const QString&>(&Models::Roster::removeContact));
+    connect(core, qOverload<const QString&, const QString&, const QString&>(&Core::Squawk::removeContact),
+            &roster, qOverload<const QString&, const QString&, const QString&>(&Models::Roster::removeContact));
+    connect(core, &Core::Squawk::changeContact, &roster, &Models::Roster::changeContact);
+    connect(core, &Core::Squawk::addPresence, &roster, &Models::Roster::addPresence);
+    connect(core, &Core::Squawk::removePresence, &roster, &Models::Roster::removePresence);
+
+    connect(core, &Core::Squawk::addRoom, &roster, &Models::Roster::addRoom);
+    connect(core, &Core::Squawk::changeRoom, &roster, &Models::Roster::changeRoom);
+    connect(core, &Core::Squawk::removeRoom, &roster, &Models::Roster::removeRoom);
+    connect(core, &Core::Squawk::addRoomParticipant, &roster, &Models::Roster::addRoomParticipant);
+    connect(core, &Core::Squawk::changeRoomParticipant, &roster, &Models::Roster::changeRoomParticipant);
+    connect(core, &Core::Squawk::removeRoomParticipant, &roster, &Models::Roster::removeRoomParticipant);
+
+
+    connect(core, &Core::Squawk::fileDownloadComplete, std::bind(&Models::Roster::fileComplete, &roster, std::placeholders::_1, false));
+    connect(core, &Core::Squawk::fileUploadComplete, std::bind(&Models::Roster::fileComplete, &roster, std::placeholders::_1, true));
+    connect(core, &Core::Squawk::fileProgress, &roster, &Models::Roster::fileProgress);
+    connect(core, &Core::Squawk::fileError, &roster, &Models::Roster::fileError);
+
+    connect(core, &Core::Squawk::requestPassword, this, &Application::requestPassword);
+    connect(core, &Core::Squawk::ready, this, &Application::readSettings);
+
+    QDBusConnection sys = QDBusConnection::sessionBus();
+    sys.connect(
+        "org.freedesktop.Notifications",
+        "/org/freedesktop/Notifications",
+        "org.freedesktop.Notifications",
+        "NotificationClosed",
+        this,
+        SLOT(onNotificationClosed(quint32, quint32))
+    );
+    sys.connect(
+        "org.freedesktop.Notifications",
+        "/org/freedesktop/Notifications",
+        "org.freedesktop.Notifications",
+        "ActionInvoked",
+        this,
+        SLOT(onNotificationInvoked(quint32, const QString&))
+    );
+}
+
+Application::~Application() {}
+
+void Application::quit() {
+    if (!nowQuitting) {
+        nowQuitting = true;
+        emit quitting();
+
+        writeSettings();
+        unreadMessagesCountChanged(0);      //this notification persist in the desktop, for now I'll zero it on quit not to confuse people
+        for (Conversations::const_iterator itr = conversations.begin(), end = conversations.end(); itr != end; ++itr) {
+            disconnect(itr->second, &Conversation::destroyed, this, &Application::onConversationClosed);
+            itr->second->close();
+        }
+        conversations.clear();
+        dialogueQueue.quit();
+
+        if (squawk != nullptr)
+            squawk->close();
+
+        if (trayIcon != nullptr) {
+            trayIcon->deleteLater();
+            trayIcon = nullptr;
+        }
+
+        if (!destroyingSquawk)
+            checkForTheLastWindow();
+    }
+}
+
+void Application::checkForTheLastWindow() {
+    if (QApplication::topLevelWidgets().size() > 0)
+        emit readyToQuit();
+    else
+        connect(qApp, &QApplication::lastWindowClosed, this, &Application::readyToQuit);
+}
+
+void Application::createMainWindow() {
+    if (squawk == nullptr) {
+        squawk = new Squawk(roster);
+
+        connect(squawk, &Squawk::notify, this, &Application::notify);
+        connect(squawk, &Squawk::changeSubscription, this, &Application::changeSubscription);
+        connect(squawk, &Squawk::openedConversation, this, &Application::onSquawkOpenedConversation);
+        connect(squawk, &Squawk::openConversation, this, &Application::openConversation);
+        connect(squawk, &Squawk::changeState, this, &Application::setState);
+        connect(squawk, &Squawk::changeTray, this, &Application::onChangeTray);
+        connect(squawk, &Squawk::itemExpanded, this, &Application::onItemExpanded);
+        connect(squawk, &Squawk::itemCollapsed, this, &Application::onItemCollapsed);
+        connect(squawk, &Squawk::quit, this, &Application::quit);
+        connect(squawk, &Squawk::closing, this, &Application::onSquawkClosing);
+
+        connect(squawk, &Squawk::modifyAccountRequest, core, &Core::Squawk::modifyAccountRequest);
+        connect(squawk, &Squawk::newAccountRequest, core, &Core::Squawk::newAccountRequest);
+        connect(squawk, &Squawk::removeAccountRequest, core, &Core::Squawk::removeAccountRequest);
+        connect(squawk, &Squawk::connectAccount, core, &Core::Squawk::connectAccount);
+        connect(squawk, &Squawk::disconnectAccount, core, &Core::Squawk::disconnectAccount);
+
+        connect(squawk, &Squawk::addContactRequest, core, &Core::Squawk::addContactRequest);
+        connect(squawk, &Squawk::removeContactRequest, core, &Core::Squawk::removeContactRequest);
+        connect(squawk, &Squawk::removeRoomRequest, core, &Core::Squawk::removeRoomRequest);
+        connect(squawk, &Squawk::addRoomRequest, core, &Core::Squawk::addRoomRequest);
+        connect(squawk, &Squawk::addContactToGroupRequest, core, &Core::Squawk::addContactToGroupRequest);
+        connect(squawk, &Squawk::removeContactFromGroupRequest, core, &Core::Squawk::removeContactFromGroupRequest);
+        connect(squawk, &Squawk::renameContactRequest, core, &Core::Squawk::renameContactRequest);
+        connect(squawk, &Squawk::requestInfo, core, &Core::Squawk::requestInfo);
+        connect(squawk, &Squawk::updateInfo, core, &Core::Squawk::updateInfo);
+        connect(squawk, &Squawk::changeDownloadsPath, core, &Core::Squawk::changeDownloadsPath);
+
+        connect(core, &Core::Squawk::responseInfo, squawk, &Squawk::responseInfo);
+
+        dialogueQueue.setParentWidnow(squawk);
+        squawk->stateChanged(availability);
+        squawk->raise();
+        squawk->show();
+        squawk->activateWindow();
+
+        for (const std::list<QString>& entry : expandedPaths) {
+            QModelIndex ind = roster.getIndexByPath(entry);
+            if (ind.isValid())
+                squawk->expand(ind);
+        }
+
+        connect(squawk, &Squawk::itemExpanded, this, &Application::onItemExpanded);
+        connect(squawk, &Squawk::itemCollapsed, this, &Application::onItemCollapsed);
+    }
+}
+
+void Application::onSquawkClosing() {
+    dialogueQueue.setParentWidnow(nullptr);
+
+    if (!nowQuitting) {
+        disconnect(core, &Core::Squawk::responseInfo, squawk, &Squawk::responseInfo);
+    }
+
+    destroyingSquawk = true;
+    squawk->deleteLater();
+    squawk = nullptr;
+
+    QSettings settings;
+    if (!nowQuitting && QSystemTrayIcon::isSystemTrayAvailable() && settings.value("tray", false).toBool()) {
+        if (settings.value("hideTray", false).toBool()) {
+            createTrayIcon();
+        }
+        actionToggle.setText(tr("Show Squawk"));
+    } else {
+        quit();
+    }
+}
+
+void Application::onSquawkDestroyed() {
+    destroyingSquawk = false;
+    if (nowQuitting)
+        checkForTheLastWindow();
+}
+
+void Application::onChangeTray(bool enabled, bool hide) {
+    if (enabled) {
+        if (trayIcon == nullptr) {
+            if (!hide || squawk == nullptr)
+                createTrayIcon();
+        } else {
+            if (hide && squawk != nullptr) {
+                trayIcon->deleteLater();
+                trayIcon = nullptr;
+            }
+        }
+    } else if (trayIcon != nullptr) {
+        trayIcon->deleteLater();
+        trayIcon = nullptr;
+    }
+}
+
+void Application::createTrayIcon() {
+    trayIcon = new QSystemTrayIcon();
+
+    QMenu* trayIconMenu = new QMenu();
+    trayIconMenu->addAction(&actionToggle);
+    trayIconMenu->addAction(&actionQuit);
+
+    trayIcon->setContextMenu(trayIconMenu);
+    trayIcon->setIcon(QApplication::windowIcon().pixmap(32, 32));
+    trayIcon->setToolTip(QApplication::applicationDisplayName());
+
+    connect(trayIcon, &QSystemTrayIcon::activated, this, &Application::trayClicked);
+    connect(trayIcon, &QSystemTrayIcon::destroyed, trayIconMenu, &QMenu::deleteLater);
+
+    trayIcon->show();
+}
+
+void Application::trayClicked(QSystemTrayIcon::ActivationReason reason) {
+    switch (reason) {
+        case QSystemTrayIcon::Trigger:
+        case QSystemTrayIcon::DoubleClick:
+        case QSystemTrayIcon::MiddleClick:
+            toggleSquawk();
+            break;
+        default:
+            break;
+    }
+}
+
+void Application::toggleSquawk() {
+    QSettings settings;
+    if (squawk == nullptr) {
+        createMainWindow();
+        if (settings.value("hideTray", false).toBool()) {
+            trayIcon->deleteLater();
+            trayIcon = nullptr;
+        }
+
+        actionToggle.setText(tr("Minimize to tray"));
+    } else {
+        squawk->close();
+    }
+}
+
+void Application::onItemCollapsed(const QModelIndex& index) {
+    std::list<QString> address = roster.getItemPath(index);
+    if (address.size() > 0)
+        expandedPaths.erase(address);
+}
+
+void Application::onItemExpanded(const QModelIndex& index) {
+    std::list<QString> address = roster.getItemPath(index);
+    if (address.size() > 0)
+        expandedPaths.insert(address);
+}
+
+void Application::onAddedElement(const std::list<QString>& path) {
+    if (squawk != nullptr && expandedPaths.count(path) > 0) {
+        QModelIndex index = roster.getIndexByPath(path);
+        if (index.isValid())
+            squawk->expand(index);
+    }
+}
+
+void Application::notify(const QString& account, const Shared::Message& msg) {
+    QString jid = msg.getPenPalJid();
+    QString name = QString(roster.getContactName(account, jid));
+    QString path = QString(roster.getContactIconPath(account, jid, msg.getPenPalResource()));
+    QVariantList args;
+    args << QString();
+
+    uint32_t notificationId = qHash(msg.getId());
+    args << notificationId;
+    if (path.size() > 0)
+        args << path;
+    else
+        args << QString("mail-message");    //TODO should here better be unknown user icon?
+
+    if (msg.getType() == Shared::Message::groupChat)
+        args << msg.getFromResource() + tr(" from ") + name;
+    else
+        args << name;
+
+    QString body(msg.getBody());
+    QString oob(msg.getOutOfBandUrl());
+    if (body == oob) {
+        body = tr("Attached file");
+    }
+
+    args << body;
+    args << QStringList({
+        "markAsRead", tr("Mark as Read"),
+        "openConversation", tr("Open conversation")
+    });
+    args << QVariantMap({
+        {"desktop-entry", qApp->desktopFileName()},
+        {"category", QString("message")},
+        {"urgency", 1},
+       // {"sound-file", "/path/to/macaw/squawk"},
+        {"sound-name", QString("message-new-instant")}
+    });
+    args << -1;
+    notifications.callWithArgumentList(QDBus::AutoDetect, "Notify", args);
+
+    storage.insert(std::make_pair(notificationId, std::make_pair(Models::Roster::ElId(account, name), msg.getId())));
+
+    if (squawk != nullptr)
+        QApplication::alert(squawk);
+}
+
+void Application::onNotificationClosed(quint32 id, quint32 reason) {
+    Notifications::const_iterator itr = storage.find(id);
+    if (itr != storage.end()) {
+        if (reason == 2) {  //dissmissed by user (https://specifications.freedesktop.org/notification-spec/latest/ar01s09.html)
+            //TODO may ba also mark as read?
+        }
+        if (reason != 1) {  //just expired, can be activated again from history, so no removing for now
+            storage.erase(id);
+            qDebug() << "Notification" << id << "was closed";
+        }
+    }
+}
+
+void Application::onNotificationInvoked(quint32 id, const QString& action) {
+    qDebug() << "Notification" << id << action << "request";
+    Notifications::const_iterator itr = storage.find(id);
+    if (itr != storage.end()) {
+        if (action == "markAsRead")
+            roster.markMessageAsRead(itr->second.first, itr->second.second);
+        else if (action == "openConversation")
+            focusConversation(itr->second.first, "", itr->second.second);
+    }
+}
+
+void Application::unreadMessagesCountChanged(int count) {
+    QDBusMessage signal = QDBusMessage::createSignal("/", "com.canonical.Unity.LauncherEntry", "Update");
+    signal << qApp->desktopFileName() + QLatin1String(".desktop");
+    signal << QVariantMap ({
+        {"count-visible", count != 0},
+        {"count", count}
+    });
+    QDBusConnection::sessionBus().send(signal);
+}
+
+void Application::focusConversation(const Models::Roster::ElId& id, const QString& resource, const QString& messageId) {
+    if (squawk != nullptr) {
+        if (squawk->currentConversationId() != id) {
+            QModelIndex index = roster.getContactIndex(id.account, id.name, resource);
+            squawk->select(index);
+        }
+
+        if (squawk->isMinimized())
+            squawk->showNormal();
+        else
+            squawk->show();
+
+        squawk->raise();
+        squawk->activateWindow();
+    } else {
+        openConversation(id, resource);
+    }
+
+    SHARED_UNUSED(messageId);
+    //TODO focus messageId;
+}
+
+void Application::setState(Shared::Availability p_availability) {
+    if (availability != p_availability) {
+        availability = p_availability;
+        emit changeState(availability);
+    }
+}
+
+void Application::stateChanged(Shared::Availability state) {
+    availability = state;
+    if (squawk != nullptr)
+        squawk->stateChanged(state);
+}
+
+void Application::readSettings() {
+    QSettings settings;
+    settings.beginGroup("ui");
+    int avail;
+    if (settings.contains("availability"))
+        avail = settings.value("availability").toInt();
+    else
+        avail = static_cast<int>(Shared::Availability::online);
+
+    settings.beginGroup("roster");
+    QStringList entries = settings.allKeys();
+    for (const QString& entry : entries) {
+        QStringList p = entry.split("/");
+        if (p.last() == "expanded" && settings.value(entry, false).toBool()) {
+            p.pop_back();
+            expandedPaths.emplace(p.begin(), p.end());
+        }
+    }
+
+    settings.endGroup();
+    settings.endGroup();
+
+    setState(Shared::Global::fromInt<Shared::Availability>(avail));
+    createMainWindow();
+
+    if (settings.value("tray", false).toBool() && !settings.value("hideTray", false).toBool())
+        createTrayIcon();
+}
+
+void Application::writeSettings() {
+    QSettings settings;
+    settings.beginGroup("ui");
+        settings.setValue("availability", static_cast<int>(availability));
+
+        settings.remove("roster");
+        settings.beginGroup("roster");
+            for (const std::list<QString>& address : expandedPaths) {
+                QString path = "";
+                for (const QString& hop : address)
+                    path += hop + "/";
+
+                path += "expanded";
+                settings.setValue(path, true);
+            }
+
+        settings.endGroup();
+    settings.endGroup();
+}
+
+void Application::requestPassword(const QString& account, bool authenticationError) {
+    if (authenticationError)
+        dialogueQueue.addAction(account, DialogQueue::askCredentials);
+    else
+        dialogueQueue.addAction(account, DialogQueue::askPassword);
+}
+
+void Application::onConversationClosed() {
+    Conversation* conv = static_cast<Conversation*>(sender());
+    Models::Roster::ElId id(conv->getAccount(), conv->getJid());
+    Conversations::const_iterator itr = conversations.find(id);
+    if (itr != conversations.end())
+        conversations.erase(itr);
+
+    if (conv->isMuc) {
+        Room* room = static_cast<Room*>(conv);
+        if (!room->autoJoined())
+            emit setRoomJoined(id.account, id.name, false);
+    }
+}
+
+void Application::changeSubscription(const Models::Roster::ElId& id, bool subscribe) {
+    Models::Item::Type type = roster.getContactType(id);
+
+    switch (type) {
+        case Models::Item::contact:
+            if (subscribe)
+                emit subscribeContact(id.account, id.name, "");
+            else
+                emit unsubscribeContact(id.account, id.name, "");
+
+            break;
+        case Models::Item::room:
+            setRoomAutoJoin(id.account, id.name, subscribe);
+            if (!isConverstationOpened(id))
+                emit setRoomJoined(id.account, id.name, subscribe);
+
+            break;
+        default:
+            break;
+    }
+}
+
+void Application::subscribeConversation(Conversation* conv) {
+    connect(conv, &Conversation::destroyed, this, &Application::onConversationClosed);
+    connect(conv, &Conversation::sendMessage, this, &Application::onConversationMessage);
+    connect(conv, &Conversation::replaceMessage, this, &Application::onConversationReplaceMessage);
+    connect(conv, &Conversation::resendMessage, this, &Application::onConversationResend);
+    connect(conv, &Conversation::setEncryption, this, &Application::onConversationSetEncryption);
+    connect(conv, &Conversation::notifyableMessage, this, &Application::notify);
+}
+
+void Application::openConversation(const Models::Roster::ElId& id, const QString& resource) {
+    Conversations::const_iterator itr = conversations.find(id);
+    Models::Account* acc = roster.getAccount(id.account);
+    Conversation* conv = nullptr;
+    bool created = false;
+    if (itr != conversations.end()) {
+        conv = itr->second;
+    } else {
+        Models::Element* el = roster.getElement(id);
+        if (el != nullptr) {
+            if (el->type == Models::Item::room) {
+                created = true;
+                Models::Room* room = static_cast<Models::Room*>(el);
+                conv = new Room(acc, room);
+                if (!room->getJoined())
+                    emit setRoomJoined(id.account, id.name, true);
+            } else if (el->type == Models::Item::contact) {
+                created = true;
+                conv = new Chat(acc, static_cast<Models::Contact*>(el));
+            }
+        }
+    }
+
+    if (conv != nullptr) {
+        if (created) {
+            conv->setAttribute(Qt::WA_DeleteOnClose);
+            subscribeConversation(conv);
+            conversations.insert(std::make_pair(id, conv));
+        }
+
+        conv->show();
+        conv->raise();
+        conv->activateWindow();
+
+        if (resource.size() > 0)
+            conv->setPalResource(resource);
+    }
+}
+
+void Application::onConversationMessage(const Shared::Message& msg) {
+    Conversation* conv = static_cast<Conversation*>(sender());
+    QString acc = conv->getAccount();
+
+    roster.addMessage(acc, msg);
+    emit sendMessage(acc, msg);
+}
+
+void Application::onConversationReplaceMessage(const QString& originalId, const Shared::Message& msg) {
+    Conversation* conv = static_cast<Conversation*>(sender());
+    QString acc = conv->getAccount();
+
+    roster.changeMessage(acc, msg.getPenPalJid(), originalId, {
+        {"state", static_cast<uint>(Shared::Message::State::pending)}
+    });
+    emit replaceMessage(acc, originalId, msg);
+}
+
+void Application::onConversationSetEncryption(Shared::EncryptionProtocol value) {
+    Conversation* conv = static_cast<Conversation*>(sender());
+    QString acc = conv->getAccount();
+    QString jid = conv->getJid();
+
+    emit setEncryption(acc, jid, value);
+}
+
+void Application::onConversationResend(const QString& id) {
+    Conversation* conv = static_cast<Conversation*>(sender());
+    QString acc = conv->getAccount();
+    QString jid = conv->getJid();
+
+    emit resendMessage(acc, jid, id);
+}
+
+void Application::onSquawkOpenedConversation() {
+    subscribeConversation(squawk->currentConversation);
+    Models::Roster::ElId id = squawk->currentConversationId();
+
+    const Models::Element* el = roster.getElementConst(id);
+    if (el != nullptr && el->isRoom() && !static_cast<const Models::Room*>(el)->getJoined()) {
+        emit setRoomJoined(id.account, id.name, true);
+    }
+}
+
+void Application::removeAccount(const QString& account) {
+    Conversations::const_iterator itr = conversations.begin();
+    while (itr != conversations.end()) {
+        if (itr->first.account == account) {
+            Conversations::const_iterator lItr = itr;
+            ++itr;
+            Conversation* conv = lItr->second;
+            disconnect(conv, &Conversation::destroyed, this, &Application::onConversationClosed);
+            conv->close();
+            conversations.erase(lItr);
+        } else {
+            ++itr;
+        }
+    }
+
+    if (squawk != nullptr && squawk->currentConversationId().account == account)
+        squawk->closeCurrentConversation();
+
+    roster.removeAccount(account);
+}
+
+void Application::changeAccount(const QString& account, const QMap<QString, QVariant>& data) {
+    for (QMap<QString, QVariant>::const_iterator itr = data.begin(), end = data.end(); itr != end; ++itr) {
+        QString attr = itr.key();
+        roster.updateAccount(account, attr, *itr);
+    }
+}
+
+void Application::addGroup(const QString& account, const QString& name) {
+    roster.addGroup(account, name);
+
+    if (squawk != nullptr) {
+        QSettings settings;
+        settings.beginGroup("ui");
+        settings.beginGroup("roster");
+        settings.beginGroup(account);
+        if (settings.value("expanded", false).toBool()) {
+            QModelIndex ind = roster.getAccountIndex(account);
+            squawk->expand(ind);
+            if (settings.value(name + "/expanded", false).toBool())
+                squawk->expand(roster.getGroupIndex(account, name));
+        }
+        settings.endGroup();
+        settings.endGroup();
+        settings.endGroup();
+    }
+}
+
+bool Application::isConverstationOpened(const Models::Roster::ElId& id) const {
+    return (conversations.count(id) > 0) || (squawk != nullptr && squawk->currentConversationId() == id);}

main/application.h

@@ -0,0 +1,134 @@
+// Squawk messenger. 
+// Copyright (C) 2019  Yury Gubich <blue@macaw.me>
+// 
+// This program is free software: you can redistribute it and/or modify
+// it under the terms of the GNU General Public License as published by
+// the Free Software Foundation, either version 3 of the License, or
+// (at your option) any later version.
+// 
+// This program is distributed in the hope that it will be useful,
+// but WITHOUT ANY WARRANTY; without even the implied warranty of
+// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+// GNU General Public License for more details.
+// 
+// You should have received a copy of the GNU General Public License
+// along with this program.  If not, see <http://www.gnu.org/licenses/>.
+
+#ifndef APPLICATION_H
+#define APPLICATION_H
+
+#include <map>
+#include <list>
+#include <set>
+
+#include <QObject>
+#include <QDBusInterface>
+#include <QSystemTrayIcon>
+#include <QMenu>
+#include <QAction>
+
+#include "dialogqueue.h"
+#include "core/squawk.h"
+
+#include "ui/squawk.h"
+#include "ui/models/roster.h"
+#include "ui/widgets/conversation.h"
+
+#include "shared/message.h"
+#include "shared/enums.h"
+
+/**
+ * @todo write docs
+ */
+class Application : public QObject
+{
+    Q_OBJECT
+public:
+    Application(Core::Squawk* core);
+    ~Application();
+
+    bool isConverstationOpened(const Models::Roster::ElId& id) const;
+
+signals:
+    void sendMessage(const QString& account, const Shared::Message& data);
+    void replaceMessage(const QString& account, const QString& originalId, const Shared::Message& data);
+    void resendMessage(const QString& account, const QString& jid, const QString& id);
+
+    void changeState(Shared::Availability state);
+
+    void setRoomJoined(const QString& account, const QString& jid, bool joined);
+    void setRoomAutoJoin(const QString& account, const QString& jid, bool joined);
+    void subscribeContact(const QString& account, const QString& jid, const QString& reason);
+    void unsubscribeContact(const QString& account, const QString& jid, const QString& reason);
+    void setEncryption(const QString& account, const QString& jid, Shared::EncryptionProtocol value);
+
+    void quitting();
+    void readyToQuit();
+
+public slots:
+    void readSettings();
+    void quit();
+
+protected slots:
+    void notify(const QString& account, const Shared::Message& msg);
+    void unreadMessagesCountChanged(int count);
+    void setState(Shared::Availability availability);
+
+    void changeAccount(const QString& account, const QMap<QString, QVariant>& data);
+    void removeAccount(const QString& account);
+    void openConversation(const Models::Roster::ElId& id, const QString& resource = "");
+
+    void addGroup(const QString& account, const QString& name);
+
+    void requestPassword(const QString& account, bool authenticationError);
+
+    void writeSettings();
+
+private slots:
+    void onConversationClosed();
+    void changeSubscription(const Models::Roster::ElId& id, bool subscribe);
+    void onSquawkOpenedConversation();
+    void onConversationMessage(const Shared::Message& msg);
+    void onConversationReplaceMessage(const QString& originalId, const Shared::Message& msg);
+    void onConversationResend(const QString& id);
+    void stateChanged(Shared::Availability state);
+    void onSquawkClosing();
+    void onSquawkDestroyed();
+    void onNotificationClosed(quint32 id, quint32 reason);
+    void onNotificationInvoked(quint32 id, const QString& action);
+    void onChangeTray(bool enabled, bool hide);
+    void trayClicked(QSystemTrayIcon::ActivationReason reason);
+    void toggleSquawk();
+    void onItemExpanded(const QModelIndex& index);
+    void onItemCollapsed(const QModelIndex& index);
+    void onAddedElement(const std::list<QString>& path);
+    void onConversationSetEncryption(Shared::EncryptionProtocol value);
+
+private:
+    void createMainWindow();
+    void subscribeConversation(Conversation* conv);
+    void checkForTheLastWindow();
+    void focusConversation(const Models::Roster::ElId& id, const QString& resource = "", const QString& messageId = "");
+    void createTrayIcon();
+
+private:
+    typedef std::map<Models::Roster::ElId, Conversation*> Conversations;
+    typedef std::map<uint32_t, std::pair<Models::Roster::ElId, QString>> Notifications;
+
+    Shared::Availability availability;
+    Core::Squawk* core;
+    Squawk* squawk;
+    QDBusInterface notifications;
+    Models::Roster roster;
+    Conversations conversations;
+    DialogQueue dialogueQueue;
+    bool nowQuitting;
+    bool destroyingSquawk;
+    Notifications storage;
+    QSystemTrayIcon* trayIcon;
+    QAction actionQuit;
+    QAction actionToggle;
+    std::set<std::list<QString>> expandedPaths;
+};
+
+#endif // APPLICATION_H

main/dialogqueue.cpp

@@ -0,0 +1,187 @@
+// Squawk messenger. 
+// Copyright (C) 2019  Yury Gubich <blue@macaw.me>
+// 
+// This program is free software: you can redistribute it and/or modify
+// it under the terms of the GNU General Public License as published by
+// the Free Software Foundation, either version 3 of the License, or
+// (at your option) any later version.
+// 
+// This program is distributed in the hope that it will be useful,
+// but WITHOUT ANY WARRANTY; without even the implied warranty of
+// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+// GNU General Public License for more details.
+// 
+// You should have received a copy of the GNU General Public License
+// along with this program.  If not, see <http://www.gnu.org/licenses/>.
+
+#include "dialogqueue.h"
+#include <QDebug>
+
+DialogQueue::DialogQueue(const Models::Roster& p_roster):
+    QObject(),
+    currentSource(),
+    currentAction(none),
+    queue(),
+    collection(queue.get<0>()),
+    sequence(queue.get<1>()),
+    prompt(nullptr),
+    parent(nullptr),
+    roster(p_roster)
+{
+}
+
+DialogQueue::~DialogQueue()
+{
+}
+
+void DialogQueue::quit()
+{
+    queue.clear();
+    if (currentAction != none) {
+        actionDone();
+    }
+}
+
+void DialogQueue::setParentWidnow(QMainWindow* p_parent)
+{
+    parent = p_parent;
+}
+
+bool DialogQueue::addAction(const QString& source, DialogQueue::Action action)
+{
+    if (action == none) {
+        return false;
+    }
+    if (currentAction == none) {
+        currentAction = action;
+        currentSource = source;
+        performNextAction();
+        return true;
+    } else {
+        if (currentAction != action || currentSource != source) {
+            std::pair<Queue::iterator, bool> result = queue.emplace(source, action);
+            return result.second;
+        } else {
+            return false;
+        }
+    }
+}
+
+bool DialogQueue::cancelAction(const QString& source, DialogQueue::Action action)
+{
+    if (source == currentSource && action == currentAction) {
+        actionDone();
+        return true;
+    } else {
+        Collection::iterator itr = collection.find(ActionId{source, action});
+        if (itr != collection.end()) {
+            collection.erase(itr);
+            return true;
+        } else {
+            return false;
+        }
+    }
+}
+
+void DialogQueue::performNextAction()
+{
+    switch (currentAction) {
+        case none:
+            actionDone();
+            break;
+        case askPassword: {
+            QInputDialog* dialog = new QInputDialog(parent);
+            prompt = dialog;
+            connect(dialog, &QDialog::accepted, this, &DialogQueue::onPropmtAccepted);
+            connect(dialog, &QDialog::rejected, this, &DialogQueue::onPropmtRejected);
+            dialog->setInputMode(QInputDialog::TextInput);
+            dialog->setTextEchoMode(QLineEdit::Password);
+            dialog->setLabelText(tr("Input the password for account %1").arg(currentSource));
+            dialog->setWindowTitle(tr("Password for account %1").arg(currentSource));
+            dialog->setTextValue("");
+            dialog->exec();
+        }
+            break;
+        case askCredentials: {
+            CredentialsPrompt* dialog = new CredentialsPrompt(parent);
+            prompt = dialog;
+            connect(dialog, &QDialog::accepted, this, &DialogQueue::onPropmtAccepted);
+            connect(dialog, &QDialog::rejected, this, &DialogQueue::onPropmtRejected);
+            const Models::Account* acc = roster.getAccountConst(currentSource);
+            dialog->setAccount(currentSource);
+            dialog->setLogin(acc->getLogin());
+            dialog->setPassword(acc->getPassword());
+            dialog->exec();
+        }
+            break;
+    }
+}
+
+void DialogQueue::onPropmtAccepted()
+{
+    switch (currentAction) {
+        case none:
+            break;
+        case askPassword: {
+            QInputDialog* dialog = static_cast<QInputDialog*>(prompt);
+            emit responsePassword(currentSource, dialog->textValue());
+        }
+            break;
+        case askCredentials: {
+            CredentialsPrompt* dialog = static_cast<CredentialsPrompt*>(prompt);
+            emit modifyAccountRequest(currentSource, {
+                {"login", dialog->getLogin()},
+                {"password", dialog->getPassword()}
+            });
+        }
+            break;
+    }
+    actionDone();
+}
+
+void DialogQueue::onPropmtRejected()
+{
+    switch (currentAction) {
+        case none:
+            break;
+        case askPassword:
+        case askCredentials:
+            emit disconnectAccount(currentSource);
+            break;
+    }
+    actionDone();
+}
+
+void DialogQueue::actionDone()
+{
+    prompt->deleteLater();
+    prompt = nullptr;
+
+    if (queue.empty()) {
+        currentAction = none;
+        currentSource = "";
+    } else {
+        Sequence::iterator itr = sequence.begin();
+        currentAction = itr->action;
+        currentSource = itr->source;
+        sequence.erase(itr);
+        performNextAction();
+    }
+}
+
+DialogQueue::ActionId::ActionId(const QString& p_source, DialogQueue::Action p_action):
+    source(p_source),
+    action(p_action) {}
+
+bool DialogQueue::ActionId::operator < (const DialogQueue::ActionId& other) const
+{
+    if (action == other.action) {
+        return source < other.source;
+    } else {
+        return action < other.action;
+    }
+}
+
+DialogQueue::ActionId::ActionId(const DialogQueue::ActionId& other):
+    source(other.source),
+    action(other.action) {}

main/dialogqueue.h

@@ -0,0 +1,101 @@
+// Squawk messenger.
+// Copyright (C) 2019  Yury Gubich <blue@macaw.me>
+//
+// This program is free software: you can redistribute it and/or modify
+// it under the terms of the GNU General Public License as published by
+// the Free Software Foundation, either version 3 of the License, or
+// (at your option) any later version.
+//
+// This program is distributed in the hope that it will be useful,
+// but WITHOUT ANY WARRANTY; without even the implied warranty of
+// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+// GNU General Public License for more details.
+//
+// You should have received a copy of the GNU General Public License
+// along with this program.  If not, see <http://www.gnu.org/licenses/>.
+
+#ifndef DIALOGQUEUE_H
+#define DIALOGQUEUE_H
+
+#include <QObject>
+#include <QInputDialog>
+#include <QMainWindow>
+
+#include <boost/multi_index_container.hpp>
+#include <boost/multi_index/ordered_index.hpp>
+#include <boost/multi_index/sequenced_index.hpp>
+
+#include <ui/widgets/accounts/credentialsprompt.h>
+#include <ui/models/roster.h>
+
+class DialogQueue : public QObject
+{
+    Q_OBJECT
+public:
+    enum Action {
+        none,
+        askPassword,
+        askCredentials
+    };
+
+    DialogQueue(const Models::Roster& roster);
+    ~DialogQueue();
+
+    bool addAction(const QString& source, Action action);
+    bool cancelAction(const QString& source, Action action);
+
+signals:
+    void modifyAccountRequest(const QString&, const QMap<QString, QVariant>&);
+    void responsePassword(const QString& account, const QString& password);
+    void disconnectAccount(const QString&);
+
+public:
+    void setParentWidnow(QMainWindow* parent);
+    void quit();
+
+private:
+    void performNextAction();
+    void actionDone();
+
+private slots:
+    void onPropmtAccepted();
+    void onPropmtRejected();
+
+private:
+    QString currentSource;
+    Action currentAction;
+
+    struct ActionId {
+    public:
+        ActionId(const QString& p_source, Action p_action);
+        ActionId(const ActionId& other);
+
+        const QString source;
+        const Action action;
+
+        bool operator < (const ActionId& other) const;
+    };
+
+    typedef boost::multi_index_container <
+        ActionId,
+        boost::multi_index::indexed_by <
+            boost::multi_index::ordered_unique <
+                boost::multi_index::identity <ActionId>
+            >,
+            boost::multi_index::sequenced<>
+        >
+    > Queue;
+
+    typedef Queue::nth_index<0>::type Collection;
+    typedef Queue::nth_index<1>::type Sequence;
+
+    Queue queue;
+    Collection& collection;
+    Sequence& sequence;
+
+    QDialog* prompt;
+    QMainWindow* parent;
+    const Models::Roster& roster;
+};
+
+#endif // DIALOGQUEUE_H

main/main.cpp

@@ -0,0 +1,58 @@
+/*
+ * Squawk messenger. 
+ * Copyright (C) 2019  Yury Gubich <blue@macaw.me>
+ *
+ * This program is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation, either version 3 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program.  If not, see <http://www.gnu.org/licenses/>.
+ */
+
+#include "root.h"
+#include "shared/messageinfo.h"
+#include "shared/identity.h"
+#include "shared/info.h"
+
+#include <QObject>
+
+#ifdef WITH_OMEMO
+#include <QXmppOmemoStorage.h>
+#endif
+
+int main(int argc, char *argv[]) {
+    qRegisterMetaType<Shared::Message>("Shared::Message");
+    qRegisterMetaType<Shared::MessageInfo>("Shared::MessageInfo");
+    qRegisterMetaType<Shared::VCard>("Shared::VCard");
+    qRegisterMetaType<std::list<Shared::Message>>("std::list<Shared::Message>");
+    qRegisterMetaType<std::list<Shared::MessageInfo>>("std::list<Shared::MessageInfo>");
+    qRegisterMetaType<std::list<QString>>("std::list<QString>");
+    qRegisterMetaType<std::set<QString>>("std::set<QString>");
+    qRegisterMetaType<std::list<Shared::Identity>>("std::list<Shared::Identity>");
+    qRegisterMetaType<QSet<QString>>("QSet<QString>");
+    qRegisterMetaType<Shared::ConnectionState>("Shared::ConnectionState");
+    qRegisterMetaType<Shared::Availability>("Shared::Availability");
+    qRegisterMetaType<Shared::EncryptionProtocol>("Shared::EncryptionProtocol");
+    qRegisterMetaType<Shared::KeyInfo>("Shared::KeyInfo");
+    qRegisterMetaType<Shared::Info>("Shared::Info");
+    qRegisterMetaType<Shared::TrustLevel>("Shared::TrustLevel");
+#ifdef WITH_OMEMO
+    qRegisterMetaType<QXmppOmemoStorage::OwnDevice>("QXmppOmemoStorage::OwnDevice");
+    qRegisterMetaTypeStreamOperators<QXmppOmemoStorage::OwnDevice>("QXmppOmemoStorage::OwnDevice");
+    qRegisterMetaType<QXmppOmemoStorage::Device>("QXmppOmemoStorage::Device");
+#endif
+    
+    Root app(argc, argv);
+    if (!app.initializeSettings())
+        return -1;
+
+    return app.run();
+}
+

main/root.cpp

@@ -0,0 +1,189 @@
+// Squawk messenger. 
+// Copyright (C) 2019  Yury Gubich <blue@macaw.me>
+// 
+// This program is free software: you can redistribute it and/or modify
+// it under the terms of the GNU General Public License as published by
+// the Free Software Foundation, either version 3 of the License, or
+// (at your option) any later version.
+// 
+// This program is distributed in the hope that it will be useful,
+// but WITHOUT ANY WARRANTY; without even the implied warranty of
+// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+// GNU General Public License for more details.
+// 
+// You should have received a copy of the GNU General Public License
+// along with this program.  If not, see <http://www.gnu.org/licenses/>.
+
+#include "root.h"
+#include <QDebug>
+#include <QThread>
+#include <QLibraryInfo>
+#include <QStandardPaths>
+
+#include <string>
+
+#include <shared/pathcheck.h>
+
+const std::vector<unsigned int> Root::appIconSizes({
+    16, 24, 32, 48, 64, 96, 128, 256, 512
+});
+
+Root::Root(int& argc, char *argv[]) :
+    QApplication(argc, argv),
+    signalCatcher(this),
+    defaultTranslator(),
+    currentTranslator(),
+    appIcon(),
+    settings(),
+    componentsInitialized(false),
+    global(nullptr),
+    coreThread(nullptr),
+    core(nullptr),
+    gui(nullptr)
+{
+    setApplicationName("squawk");
+    setOrganizationName("macaw.me");
+    setApplicationDisplayName("Squawk");
+    setApplicationVersion("0.2.3");
+    setDesktopFileName("squawk");
+
+    initializeTranslation();
+    initializeAppIcon();
+
+    global = new Shared::Global();  //important to instantiate after initialization of translations;
+}
+
+Root::~Root() {
+    if (componentsInitialized) {
+        delete gui;
+        if (core != nullptr)
+            delete core;
+
+        delete coreThread;
+    }
+    delete global;
+}
+
+
+void Root::initializeTranslation() {
+    defaultTranslator.load("qt_" + QLocale::system().name(), QLibraryInfo::location(QLibraryInfo::TranslationsPath));
+    installTranslator(&defaultTranslator);
+
+    QStringList shares = QStandardPaths::standardLocations(QStandardPaths::AppDataLocation);
+    bool found = false;
+    for (QString share : shares) {
+        found = currentTranslator.load(QLocale(), QLatin1String("squawk"), ".", share + "/l10n");
+        if (found)
+            break;
+    }
+
+    if (!found)
+        currentTranslator.load(QLocale(), QLatin1String("squawk"), ".", QCoreApplication::applicationDirPath());
+
+
+    installTranslator(&currentTranslator);
+}
+
+void Root::initializeAppIcon() {
+    for (std::vector<unsigned int>::size_type i = 0; i < appIconSizes.size(); ++i)
+        appIcon.addFile(":images/logo.svg", QSize(appIconSizes[i], appIconSizes[i]));
+
+    Root::setWindowIcon(appIcon);
+}
+
+bool Root::initializeSettings() {
+    QVariant vs = settings.value("style");
+    if (vs.isValid()) {
+        QString style = vs.toString().toLower();
+        if (style != "system")
+            Shared::Global::setStyle(style);
+    }
+
+    if (Shared::Global::supported("colorSchemeTools")) {
+        QVariant vt = settings.value("theme");
+        if (vt.isValid()) {
+            QString theme = vt.toString();
+            if (theme.toLower() != "system")
+                Shared::Global::setTheme(theme);
+        }
+    }
+
+    QString path = Shared::downloadsPathCheck();
+    if (path.size() > 0) {
+        settings.setValue("downloadsPath", path);
+    } else {
+        qDebug() << "couldn't initialize directory for downloads, quitting";
+        return false;
+    }
+
+    return true;
+}
+
+int Root::run() {
+    if (!componentsInitialized)
+        initializeComponents();
+
+    coreThread->start();
+    int result = exec();
+    qDebug("Event loop stopped");
+
+    if (result == 0) {
+        processEvents();                    //I dont like all of this mess
+        if (coreThread->isRunning()) {      //but it's the best solution for now
+            if (core != nullptr) {          //Ideally, following line should never appear in the log
+                qDebug() << "Core is still seems to be running, killing manually";
+                core->deleteLater();
+                coreThread->quit();
+                processEvents();
+                core = nullptr;
+            }
+            coreThread->wait();
+        }
+    }
+
+    return result;
+}
+
+void Root::initializeComponents() {
+    core = new Core::Squawk();
+    coreThread = new QThread();
+    core->moveToThread(coreThread);
+    gui = new Application(core);
+
+    QObject::connect(&signalCatcher, &SignalCatcher::interrupt, gui, &Application::quit);
+
+    QObject::connect(coreThread, &QThread::started, core, &Core::Squawk::start);
+    QObject::connect(gui, &Application::quitting, core, &Core::Squawk::stop);
+
+    QObject::connect(core, &Core::Squawk::quit, core, &Core::Squawk::deleteLater);
+    QObject::connect(core, &Core::Squawk::destroyed, this, &Root::onCoreDestroyed);
+    QObject::connect(core, &Core::Squawk::destroyed, coreThread, &QThread::quit, Qt::QueuedConnection);
+    QObject::connect(coreThread, &QThread::finished, this, &Root::quit, Qt::QueuedConnection);
+
+    componentsInitialized = true;
+}
+
+bool Root::notify(QObject* receiver, QEvent* e) {
+    try {
+        return QApplication::notify(receiver, e);
+    } catch(const std::runtime_error& e) {
+        qDebug() << "std::runtime_error in thread:" << QThread::currentThreadId();
+        qDebug() << "error message:" << e.what();
+    } catch(const std::exception& e) {
+        qDebug() << "std::exception in thread:" << QThread::currentThreadId();
+        qDebug() << "error message:" << e.what();
+    } catch(const int& e) {
+        qDebug() << "integer exception in thread:" << QThread::currentThreadId();
+        qDebug() << "thrown integer:" << std::to_string(e).c_str();
+    } catch(...) {
+        qDebug() << "unhandled exception thread:" << QThread::currentThreadId();
+    }
+
+    qDebug() << "Squawk is crashing...";
+    exit(1);
+    return false;
+}
+
+void Root::onCoreDestroyed() {
+    core = nullptr;
+}

main/root.h

@@ -0,0 +1,70 @@
+// Squawk messenger. 
+// Copyright (C) 2019  Yury Gubich <blue@macaw.me>
+// 
+// This program is free software: you can redistribute it and/or modify
+// it under the terms of the GNU General Public License as published by
+// the Free Software Foundation, either version 3 of the License, or
+// (at your option) any later version.
+// 
+// This program is distributed in the hope that it will be useful,
+// but WITHOUT ANY WARRANTY; without even the implied warranty of
+// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+// GNU General Public License for more details.
+// 
+// You should have received a copy of the GNU General Public License
+// along with this program.  If not, see <http://www.gnu.org/licenses/>.
+
+#ifndef ROOT_H
+#define ROOT_H
+
+#include <QApplication>
+#include <QTranslator>
+#include <QIcon>
+#include <QSettings>
+#include <QThread>
+
+#include <vector>
+
+#include <core/squawk.h>
+#include <core/signalcatcher.h>
+
+#include <shared/global.h>
+
+#include "application.h"
+
+class Root : public QApplication {
+    Q_OBJECT
+public:
+    Root(int& argc, char* argv[]);
+    ~Root();
+    bool notify(QObject* receiver, QEvent* e) override;
+    int run();
+
+    bool initializeSettings();
+
+private slots:
+    void onCoreDestroyed();
+
+private:
+    void initializeTranslation();
+    void initializeAppIcon();
+    void initializeComponents();
+
+private:
+    static const std::vector<unsigned int> appIconSizes;
+
+    SignalCatcher signalCatcher;
+    QTranslator defaultTranslator;
+    QTranslator currentTranslator;
+    QIcon appIcon;
+    QSettings settings;
+    bool componentsInitialized;
+
+    Shared::Global* global;
+    QThread* coreThread;
+    Core::Squawk* core;
+    Application* gui;
+
+};
+
+#endif // ROOT_H

packaging/Archlinux/PKGBUILD

@@ -1,23 +1,26 @@
 # Maintainer: Yury Gubich <blue@macaw.me>
 pkgname=squawk
-pkgver=0.1.5
+pkgver=0.2.3
 pkgrel=1
 pkgdesc="An XMPP desktop messenger, written on pure c++ (qt)"
 arch=('i686' 'x86_64')
 url="https://git.macaw.me/blue/squawk"
 license=('GPL3')
-depends=('hicolor-icon-theme' 'desktop-file-utils' 'lmdb' 'qxmpp>=1.1.0')
-makedepends=('cmake>=3.3' 'imagemagick' 'qt5-tools')
-optdepends=('kwallet: secure password storage (requires rebuild)')
+depends=('hicolor-icon-theme' 'desktop-file-utils' 'lmdbal' 'qxmpp-qt5')
+makedepends=('cmake>=3.3' 'imagemagick' 'qt5-tools' 'boost')
+optdepends=('kwallet5: secure password storage (requires rebuild)'
+            'kconfig5: system themes support (requires rebuild)'
+            'kconfigwidgets5: system themes support (requires rebuild)'
+            'kio5: better show in folder action (requires rebuild)')
 
-source=("$pkgname-$pkgver.tar.gz")
-sha256sums=('e1a4c88be9f0481d2aa21078faf42fd0e9d66b490b6d8af82827d441cb58df25')
+source=("$pkgname-$pkgver.tar.gz::https://git.macaw.me/blue/$pkgname/archive/$pkgver.tar.gz")
+sha256sums=('SKIP')
 build() {
         cd "$srcdir/squawk"
         cmake . -D CMAKE_INSTALL_PREFIX=/usr -D CMAKE_BUILD_TYPE=Release
-        cmake --build . -j $nproc
+        cmake --build .
 }
 package() {
         cd "$srcdir/squawk"
-        DESTDIR="$pkgdir/" cmake --build . --target install 
+        DESTDIR="$pkgdir/" cmake --install .
 }

packaging/CMakeLists.txt

@@ -1,3 +1,7 @@
 configure_file(squawk.desktop squawk.desktop COPYONLY)
 
 install(FILES ${CMAKE_CURRENT_BINARY_DIR}/squawk.desktop DESTINATION ${CMAKE_INSTALL_DATADIR}/applications)
+
+configure_file(macaw.me.squawk.appdata.xml macaw.me.squawk.appdata.xml COPYONLY)
+
+install(FILES ${CMAKE_CURRENT_BINARY_DIR}/macaw.me.squawk.appdata.xml DESTINATION ${CMAKE_INSTALL_DATADIR}/metainfo)

packaging/macaw.me.squawk.appdata.xml

@@ -0,0 +1,33 @@
+<?xml version="1.0" encoding="UTF-8"?>
+<component xmlns:xi="http://www.w3.org/2001/XInclude" xmlns:its="http://www.w3.org/2005/11/its" xmlns="https://specifications.freedesktop.org/metainfo/1.0" type="desktop-application">
+  <id>macaw.me.squawk</id>
+  <metadata_license>CC0-1.0</metadata_license>
+  <project_license>GPL-3.0+</project_license>
+  <name>Squawk</name>
+  <summary>Desktop Qt based XMPP messenger</summary>
+  <description>
+    <p>
+      Squawk is a lightweight XMPP desktop messenger.
+      The primary objective of this project is to offer
+      you a fast and user-friendly messaging experience
+      that closely aligns with your system’s style, while
+      also minimizing resource consumption.
+    </p>
+    <p>
+      Squawk is still at a very early stage and might not suit
+      everyone but you are welcome to try it out.
+    </p>
+  </description>
+  <launchable type="desktop-id">macaw.me.squawk.desktop</launchable>
+  <screenshots>
+    <screenshot type="default">
+      <image>https://macaw.me/projects/squawk/0.2.2.png</image>
+      <caption>View XMPP contacts and conversations</caption>
+    </screenshot>
+  </screenshots>
+  <url type="homepage">https://macaw.me/projects/squawk/</url>
+  <provides>
+    <binary>squawk</binary>
+  </provides>
+  <update_contact>blue@macaw.me</update_contact>
+</component>

plugins/CMakeLists.txt

@@ -1,4 +1,14 @@
 if (WITH_KIO)
   add_library(openFileManagerWindowJob SHARED openfilemanagerwindowjob.cpp)
   target_link_libraries(openFileManagerWindowJob PRIVATE KF5::KIOWidgets)
+
+  install(TARGETS openFileManagerWindowJob LIBRARY DESTINATION ${CMAKE_INSTALL_LIBDIR}/squawk)
+endif ()
+
+if (WITH_KCONFIG)
+  add_library(colorSchemeTools SHARED colorschemetools.cpp)
+  target_link_libraries(colorSchemeTools PRIVATE KF5::ConfigCore)
+  target_link_libraries(colorSchemeTools PRIVATE KF5::ConfigWidgets)
+
+  install(TARGETS colorSchemeTools LIBRARY DESTINATION ${CMAKE_INSTALL_LIBDIR}/squawk)
 endif()

plugins/colorschemetools.cpp

@@ -0,0 +1,70 @@
+/*
+ * Squawk messenger.
+ * Copyright (C) 2019  Yury Gubich <blue@macaw.me>
+ *
+ * This program is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation, either version 3 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program.  If not, see <http://www.gnu.org/licenses/>.
+ */
+
+#include <QIcon>
+#include <QPainter>
+#include <QFileInfo>
+
+#include <KConfigCore/KSharedConfig>
+#include <KConfigCore/KConfigGroup>
+#include <KConfigWidgets/KColorScheme>
+
+QPixmap createPixmap(int size, const QBrush& window, const QBrush& button, const QBrush& view, const QBrush& selection);
+
+extern "C" QIcon* createPreview(const QString& path) {
+    KSharedConfigPtr schemeConfig = KSharedConfig::openConfig(path);
+    QIcon* result = new QIcon();
+    KColorScheme activeWindow(QPalette::Active, KColorScheme::Window, schemeConfig);
+    KColorScheme activeButton(QPalette::Active, KColorScheme::Button, schemeConfig);
+    KColorScheme activeView(QPalette::Active, KColorScheme::View, schemeConfig);
+    KColorScheme activeSelection(QPalette::Active, KColorScheme::Selection, schemeConfig);
+
+    result->addPixmap(createPixmap(16, activeWindow.background(), activeButton.background(), activeView.background(), activeSelection.background()));
+    result->addPixmap(createPixmap(24, activeWindow.background(), activeButton.background(), activeView.background(), activeSelection.background()));
+
+    return result;
+}
+
+extern "C" void deletePreview(QIcon* icon) {
+    delete icon;
+}
+
+extern "C" void colorSchemeName(const QString& path, QString& answer) {
+    KSharedConfigPtr config = KSharedConfig::openConfig(path);
+    KConfigGroup group(config, QStringLiteral("General"));
+    answer = group.readEntry("Name", QFileInfo(path).baseName());
+}
+
+extern "C" void createPalette(const QString& path, QPalette& answer) {
+    KSharedConfigPtr config = KSharedConfig::openConfig(path);
+    answer = KColorScheme::createApplicationPalette(config);
+}
+
+QPixmap createPixmap(int size, const QBrush& window, const QBrush& button, const QBrush& view, const QBrush& selection) {
+    QPixmap pix(size, size);
+    pix.fill(Qt::black);
+    QPainter p;
+    p.begin(&pix);
+    const int itemSize = size / 2 - 1;
+    p.fillRect(1, 1, itemSize, itemSize, window);
+    p.fillRect(1 + itemSize, 1, itemSize, itemSize, button);
+    p.fillRect(1, 1 + itemSize, itemSize, itemSize, view);
+    p.fillRect(1 + itemSize, 1 + itemSize, itemSize, itemSize, selection);
+    p.end();
+    return pix;
+}

plugins/openfilemanagerwindowjob.cpp

@@ -1,3 +1,21 @@
+/*
+ * Squawk messenger.
+ * Copyright (C) 2019  Yury Gubich <blue@macaw.me>
+ *
+ * This program is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation, either version 3 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program.  If not, see <http://www.gnu.org/licenses/>.
+ */
+
 #include <QUrl>
 #include <QObject>
 #include <KIO/OpenFileManagerWindowJob>

resources/CMakeLists.txt

@@ -3,11 +3,8 @@ target_sources(squawk PRIVATE resources.qrc)
 configure_file(images/logo.svg squawk.svg COPYONLY)
 configure_file(squawk.rc squawk.rc COPYONLY)
 
-if(WIN32)
-    set(CONVERT_BIN magick convert)
-else(WIN32)
-    set(CONVERT_BIN convert)
-endif(WIN32)
+set(CONVERT_BIN magick)
+
 execute_process(COMMAND ${CONVERT_BIN} -background none -size 48x48 squawk.svg squawk48.png WORKING_DIRECTORY ${CMAKE_CURRENT_BINARY_DIR})
 execute_process(COMMAND ${CONVERT_BIN} -background none -size 64x64 squawk.svg squawk64.png WORKING_DIRECTORY ${CMAKE_CURRENT_BINARY_DIR})
 execute_process(COMMAND ${CONVERT_BIN} -background none -size 128x128 squawk.svg squawk128.png WORKING_DIRECTORY ${CMAKE_CURRENT_BINARY_DIR})
@@ -22,16 +19,16 @@ endif(WIN32)
 
 if (APPLE)
     file(MAKE_DIRECTORY "${CMAKE_CURRENT_BINARY_DIR}/icns.iconset")
-    execute_process(COMMAND convert -background none -size 16x16 squawk.svg icns.iconset/icon_16x16.png WORKING_DIRECTORY ${CMAKE_CURRENT_BINARY_DIR})
-    execute_process(COMMAND convert -background none -resize !32x32 squawk.svg "icns.iconset/icon_16x16@2x.png" WORKING_DIRECTORY ${CMAKE_CURRENT_BINARY_DIR})
-    execute_process(COMMAND convert -background none -resize !32x32 squawk.svg "icns.iconset/icon_32x32.png" WORKING_DIRECTORY ${CMAKE_CURRENT_BINARY_DIR})
-    execute_process(COMMAND convert -background none -resize !64x64 squawk.svg "icns.iconset/icon_32x32@2x.png" WORKING_DIRECTORY ${CMAKE_CURRENT_BINARY_DIR})
-    execute_process(COMMAND convert -background none -resize !128x128 squawk.svg "icns.iconset/icon_128x128.png" WORKING_DIRECTORY ${CMAKE_CURRENT_BINARY_DIR})
-    execute_process(COMMAND convert -background none -resize !256x256 squawk.svg "icns.iconset/icon_128x128@2x.png" WORKING_DIRECTORY ${CMAKE_CURRENT_BINARY_DIR})
-    execute_process(COMMAND convert -background none -resize !256x256 squawk.svg "icns.iconset/icon_256x256.png" WORKING_DIRECTORY ${CMAKE_CURRENT_BINARY_DIR})
-    execute_process(COMMAND convert -background none -resize !512x512 squawk.svg "icns.iconset/icon_256x256@2x.png" WORKING_DIRECTORY ${CMAKE_CURRENT_BINARY_DIR})
-    execute_process(COMMAND convert -background none -resize !512x512 squawk.svg "icns.iconset/icon_512x512.png" WORKING_DIRECTORY ${CMAKE_CURRENT_BINARY_DIR})
-    execute_process(COMMAND convert -background none -resize !1024x1024 squawk.svg "icns.iconset/icon_512x512@2x.png" WORKING_DIRECTORY ${CMAKE_CURRENT_BINARY_DIR})
+    execute_process(COMMAND ${CONVERT_BIN} -background none -size 16x16 squawk.svg icns.iconset/icon_16x16.png WORKING_DIRECTORY ${CMAKE_CURRENT_BINARY_DIR})
+    execute_process(COMMAND ${CONVERT_BIN} -background none -resize !32x32 squawk.svg "icns.iconset/icon_16x16@2x.png" WORKING_DIRECTORY ${CMAKE_CURRENT_BINARY_DIR})
+    execute_process(COMMAND ${CONVERT_BIN} -background none -resize !32x32 squawk.svg "icns.iconset/icon_32x32.png" WORKING_DIRECTORY ${CMAKE_CURRENT_BINARY_DIR})
+    execute_process(COMMAND ${CONVERT_BIN} -background none -resize !64x64 squawk.svg "icns.iconset/icon_32x32@2x.png" WORKING_DIRECTORY ${CMAKE_CURRENT_BINARY_DIR})
+    execute_process(COMMAND ${CONVERT_BIN} -background none -resize !128x128 squawk.svg "icns.iconset/icon_128x128.png" WORKING_DIRECTORY ${CMAKE_CURRENT_BINARY_DIR})
+    execute_process(COMMAND ${CONVERT_BIN} -background none -resize !256x256 squawk.svg "icns.iconset/icon_128x128@2x.png" WORKING_DIRECTORY ${CMAKE_CURRENT_BINARY_DIR})
+    execute_process(COMMAND ${CONVERT_BIN} -background none -resize !256x256 squawk.svg "icns.iconset/icon_256x256.png" WORKING_DIRECTORY ${CMAKE_CURRENT_BINARY_DIR})
+    execute_process(COMMAND ${CONVERT_BIN} -background none -resize !512x512 squawk.svg "icns.iconset/icon_256x256@2x.png" WORKING_DIRECTORY ${CMAKE_CURRENT_BINARY_DIR})
+    execute_process(COMMAND ${CONVERT_BIN} -background none -resize !512x512 squawk.svg "icns.iconset/icon_512x512.png" WORKING_DIRECTORY ${CMAKE_CURRENT_BINARY_DIR})
+    execute_process(COMMAND ${CONVERT_BIN} -background none -resize !1024x1024 squawk.svg "icns.iconset/icon_512x512@2x.png" WORKING_DIRECTORY ${CMAKE_CURRENT_BINARY_DIR})
     execute_process(COMMAND iconutil -c icns "icns.iconset" -o "squawk.icns" WORKING_DIRECTORY ${CMAKE_CURRENT_BINARY_DIR})
     set(MACOSX_BUNDLE_ICON_FILE squawk.icns)
     set(MACOSX_BUNDLE_ICON_FILE ${MACOSX_BUNDLE_ICON_FILE} PARENT_SCOPE)

resources/images/fallback/dark/big/lock.svg

@@ -0,0 +1,13 @@
+<svg xmlns="http://www.w3.org/2000/svg" viewBox="0 0 22 22">
+  <defs id="defs3051">
+    <style type="text/css" id="current-color-scheme">
+      .ColorScheme-Text {
+        color:#232629;
+      }
+      </style>
+  </defs>
+ <path style="fill:currentColor;fill-opacity:1;stroke:none" 
+     d="M 11,3 C 8.784,3 7,4.784 7,7 l 0,4 -2,0 c 0,2.666667 0,5.333333 0,8 4,0 8,0 12,0 l 0,-8 c -0.666667,0 -1.333333,0 -2,0 L 15,7 C 15,4.784 13.216,3 11,3 m 0,1 c 1.662,0 3,1.561 3,3.5 L 14,11 8,11 8,7.5 C 8,5.561 9.338,4 11,4"
+     class="ColorScheme-Text"
+     />
+</svg>

resources/images/fallback/dark/big/shield.svg

@@ -0,0 +1,13 @@
+<svg xmlns="http://www.w3.org/2000/svg" viewBox="0 0 16 16">
+  <defs id="defs3051">
+    <style type="text/css" id="current-color-scheme">
+      .ColorScheme-Text {
+        color:#232629;
+      }
+      </style>
+  </defs>
+    <path 
+        style="fill:currentColor;fill-opacity:1;stroke:none" 
+          d="M 8,2 C 8,2 6.5,3.9931391 2,4.4931641 2,4.4931641 2,11.493575 8,14 14,11.493575 14,4.4931641 14,4.4931641 9.5,3.9931391 8,2 8,2 Z m 0,1.0327148 c 1.1902463,1.008525 2.90787,1.6813196 5.134277,2.0200196 C 13.013333,6.1366343 12.897371,6.9523225 12.617188,7.7407227 12.02837,9.3975477 11.341831,10.405496 10.726074,11.130371 9.7719035,12.253646 8.905394,12.708244 8,13.160644 7.094606,12.708244 6.2280961,12.253646 5.2739258,11.130371 4.658169,10.405496 3.97163,9.3975477 3.3828125,7.7407227 3.102629,6.9523225 2.9866669,6.1366343 2.8657227,5.0527344 5.0921299,4.7140344 6.8097538,4.0412398 8,3.0327148 Z M 8,3.9321289 C 6.6923817,4.8398539 5.2233869,5.2995548 3.7490234,5.6123046 4.4471579,9.5738045 5.9510862,11.267813 8,12.328613 10.048914,11.267813 11.552843,9.5738045 12.250977,5.6123046 10.776613,5.2995547 9.3076183,4.8398539 8,3.9321289 Z"
+          class="ColorScheme-Text"/>
+</svg>

resources/images/fallback/dark/big/unlock.svg

@@ -0,0 +1,14 @@
+<svg xmlns="http://www.w3.org/2000/svg" viewBox="0 0 22 22">
+  <defs id="defs3051">
+    <style type="text/css" id="current-color-scheme">
+      .ColorScheme-Text {
+        color:#232629;
+      }
+      </style>
+  </defs>
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+    class="ColorScheme-Text"
+    />
+</svg>

resources/images/fallback/dark/small/lock.svg

@@ -0,0 +1,13 @@
+<svg xmlns="http://www.w3.org/2000/svg" viewBox="0 0 16 16">
+  <defs id="defs3051">
+    <style type="text/css" id="current-color-scheme">
+      .ColorScheme-Text {
+        color:#232629;
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+      </style>
+  </defs>
+ <path style="fill:currentColor;fill-opacity:1;stroke:none" 
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+     class="ColorScheme-Text"
+     />
+</svg>

resources/images/fallback/dark/small/shield.svg

@@ -0,0 +1,13 @@
+<svg xmlns="http://www.w3.org/2000/svg" viewBox="0 0 16 16">
+  <defs id="defs3051">
+    <style type="text/css" id="current-color-scheme">
+      .ColorScheme-Text {
+        color:#232629;
+      }
+      </style>
+  </defs>
+    <path 
+        style="fill:currentColor;fill-opacity:1;stroke:none" 
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+          class="ColorScheme-Text"/>
+</svg>

resources/images/fallback/dark/small/unlock.svg

@@ -0,0 +1,13 @@
+<svg xmlns="http://www.w3.org/2000/svg" viewBox="0 0 16 16">
+  <defs id="defs3051">
+    <style type="text/css" id="current-color-scheme">
+      .ColorScheme-Text {
+        color:#232629;
+      }
+      </style>
+  </defs>
+ <path style="fill:currentColor;fill-opacity:1;stroke:none" 
+     d="M 8 2 C 6.3431375 2 5 3.3431371 5 5 L 5 6 L 6 6 L 6 5 C 6 3.8954305 6.8954305 3 8 3 C 9.1045695 3 10 3.8954305 10 5 L 10 8 L 7 8 L 6 8 L 5 8 L 3 8 L 3 14 L 13 14 L 13 8 L 11 8 L 11 5 C 11 3.3431371 9.6568625 2 8 2 z M 4 9 L 12 9 L 12 13 L 4 13 L 4 9 z "
+     class="ColorScheme-Text"
+     />
+</svg>

resources/images/fallback/light/big/lock.svg

@@ -0,0 +1,13 @@
+<svg xmlns="http://www.w3.org/2000/svg" viewBox="0 0 22 22">
+  <defs id="defs3051">
+    <style type="text/css" id="current-color-scheme">
+      .ColorScheme-Text {
+        color:#eff0f1;
+      }
+      </style>
+  </defs>
+ <path style="fill:currentColor;fill-opacity:1;stroke:none" 
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+     class="ColorScheme-Text"
+     />
+</svg>

resources/images/fallback/light/big/shield.svg

@@ -0,0 +1,13 @@
+<svg xmlns="http://www.w3.org/2000/svg" viewBox="0 0 16 16">
+  <defs id="defs3051">
+    <style type="text/css" id="current-color-scheme">
+      .ColorScheme-Text {
+        color:#eff0f1;
+      }
+      </style>
+  </defs>
+    <path 
+        style="fill:currentColor;fill-opacity:1;stroke:none" 
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+          class="ColorScheme-Text"/>
+</svg>

resources/images/fallback/light/big/unlock.svg

@@ -0,0 +1,14 @@
+<svg xmlns="http://www.w3.org/2000/svg" viewBox="0 0 22 22">
+  <defs id="defs3051">
+    <style type="text/css" id="current-color-scheme">
+      .ColorScheme-Text {
+        color:#eff0f1;
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+    class="ColorScheme-Text"
+    />
+</svg>

resources/images/fallback/light/small/lock.svg

@@ -0,0 +1,13 @@
+<svg xmlns="http://www.w3.org/2000/svg" viewBox="0 0 16 16">
+  <defs id="defs3051">
+    <style type="text/css" id="current-color-scheme">
+      .ColorScheme-Text {
+        color:#eff0f1;
+      }
+      </style>
+  </defs>
+ <path style="fill:currentColor;fill-opacity:1;stroke:none" 
+     d="M 8,2 C 6.3431375,2 5,3.3431372 5,5 l 0,3 -2,0 0,6 10,0 0,-6 -2,0 0,-3 C 11,3.3431372 9.6568625,2 8,2 Z m 0,1 c 1.1045695,0 2,0.8954305 2,2 L 10,8 6,8 6,5 C 6,3.8954305 6.8954305,3 8,3 Z"
+     class="ColorScheme-Text"
+     />
+</svg>