Minor changes

fix: build without kwallet

.forgejo/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 +1,6 @@
 [submodule "external/qxmpp"]
 	path = external/qxmpp
-	url = https://github.com/qxmpp-project/qxmpp.git
+	url = https://invent.kde.org/libraries/qxmpp/
+[submodule "external/lmdbal"]
+	path = external/lmdbal
+	url = https://git.macaw.me/blue/lmdbal

CHANGELOG.md

@@ -0,0 +1,181 @@
+# Changelog
+
+## Squawk 0.2.4 (UNRELEASED)
+### Bug fixes
+- messages to the mucs get sent once again
+
+### Improvements
+- it's possible to build against Qt 6 now, Qt6 is the default
+- got rid of deprecated SimpleCrypt library
+- look up for proper stanzaID
+
+## 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 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
+- error with sending attached files to the conference
+- error with building on lower versions of QXmpp
+- error on the first access to the conference database
+- quit now actually quits the app
+- history in MUC now works properly and requests messages from server
+- error with handling non lower cased JIDs
+- some workaround upon reconnection
+
+
+## Squawk 0.1.4 (Apr 14, 2020)
+### New features
+- message line now is in the same window with roster (new window dialog is still able to opened on context menu)
+- several new ways to manage your account password:
+  - store it in plain text with the config (like it always was)
+  - store it in config jammed (local hashing with the constant seed, not secure at all but might look like it is)
+  - ask the account password on each program launch
+  - store it in KWallet which is dynamically loaded
+- dragging into conversation now attach files
+  
+### Bug fixes
+- never updating MUC avatars now get updated
+- going offline related segfault fix
+- statuses now behave better: they wrap if they don't fit, you can select them, you can follow links from there
+- messages and statuses don't loose content if you use < ore > symbols
+- now avatars of those who are not in the MUC right now but was also display next to the message
+- fix crash on attempt to attach the same file for the second time
+
+
+## Squawk 0.1.3 (Mar 31, 2020)
+### New features
+- delivery states for the messages
+- delivery receipts now work for real
+- avatars in conferences
+- edited messages now display correctly
+- restyling to get better look with different desktop themes
+
+### Bug fixes
+- clickable links now detects better
+- fixed lost messages that came with no ID
+- avatar related fixes
+- message carbons now get turned on only if the server supports them
+- progress spinner fix
+- files in dialog now have better comment
+
+
+## Squawk 0.1.2 (Dec 25, 2019)
+### New features
+- icons in roster for conferences
+- pal avatar in dialog window
+- avatars next to every message in dialog windows (not in conferences yet)
+- roster window position and size now are stored in config
+- expanded accounts and groups are stored in config
+- availability (from top combobox) now is stored in config
+
+### Bug fixes
+- segfault when sending more then one attached file
+- wrong path and name of saving file
+- wrong message syntax when attaching file and writing text in the save message
+- problem with links highlighting in dialog
+- project building fixes
+
+
+## Squawk 0.1.1 (Nov 16, 2019)
+A lot of bug fixes, memory leaks fixes
+### New features
+- exchange files via HTTP File Upload
+- download VCards of your contacts
+- upload your VCard with information about your contact phones email addresses, names, career information and avatar
+- avatars of your contacts in roster and in notifications
+
+
+## Squawk 0.0.5 (Oct 10, 2019)
+### Features
+- chat directly
+- have multiple accounts
+- add contacts
+- remove contacts
+- assign contact to different groups
+- chat in MUCs
+- join MUCs, leave them, keep them subscribed or unsubscribed
+- download attachmets
+- local history
+- desktop notifications of new messages

CMakeLists.txt

@@ -1,65 +1,246 @@
-cmake_minimum_required(VERSION 3.0)
-project(squawk)
+cmake_minimum_required(VERSION 3.16)
+project(squawk VERSION 0.2.4 LANGUAGES CXX)
 
-set(CMAKE_INCLUDE_CURRENT_DIR ON)
-set(CMAKE_CXX_STANDARD 11)
+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(CMAKE_AUTOMOC ON)
 set(CMAKE_AUTOUIC ON)
 set(CMAKE_AUTORCC ON)
 
 include(GNUInstallDirs)
+set(CMAKE_MODULE_PATH ${CMAKE_MODULE_PATH} "${CMAKE_SOURCE_DIR}/cmake")
 
-find_package(Qt5Widgets CONFIG REQUIRED)
-find_package(Qt5LinguistTools)
-
-set(squawk_SRC
-  main.cpp
-  global.cpp
-  exception.cpp
-  signalcatcher.cpp
-)
-
-configure_file(resources/images/logo.svg squawk.svg COPYONLY)
-execute_process(COMMAND convert -background none -size 48x48 squawk.svg squawk48.png WORKING_DIRECTORY ${CMAKE_CURRENT_BINARY_DIR})
-execute_process(COMMAND convert -background none -size 64x64 squawk.svg squawk64.png WORKING_DIRECTORY ${CMAKE_CURRENT_BINARY_DIR})
-execute_process(COMMAND convert -background none -size 128x128 squawk.svg squawk128.png WORKING_DIRECTORY ${CMAKE_CURRENT_BINARY_DIR})
-execute_process(COMMAND convert -background none -size 256x256 squawk.svg squawk256.png WORKING_DIRECTORY ${CMAKE_CURRENT_BINARY_DIR})
-
-configure_file(packaging/squawk.desktop squawk.desktop COPYONLY)
-
-set(TS_FILES 
-    translations/squawk.ru.ts
-)
-qt5_add_translation(QM_FILES ${TS_FILES})
-add_custom_target(translations ALL DEPENDS ${QM_FILES})
-
-qt5_add_resources(RCC resources/resources.qrc)
-
-add_executable(squawk ${squawk_SRC} ${RCC})
-target_link_libraries(squawk Qt5::Widgets)
-
-add_subdirectory(ui)
-add_subdirectory(core)
-
-option(SYSTEM_QXMPP "Use system qxmpp lib" OFF) 
-
-if(NOT SYSTEM_QXMPP)
-    add_subdirectory(external/qxmpp)
+set(WIN32_FLAG "")
+set(MACOSX_BUNDLE_FLAG "")
+if (CMAKE_BUILD_TYPE STREQUAL "Release")
+  if (WIN32)
+    set(WIN32_FLAG WIN32)
+  endif(WIN32)
+  if (APPLE)
+    set(MACOSX_BUNDLE_FLAG MACOSX_BUNDLE)
+  endif(APPLE)
 endif()
 
-target_link_libraries(squawk squawkUI)
-target_link_libraries(squawk squawkCORE)
-target_link_libraries(squawk uuid)
+add_executable(squawk ${WIN32_FLAG} ${MACOSX_BUNDLE_FLAG})
+target_include_directories(squawk PRIVATE ${CMAKE_SOURCE_DIR})
 
-add_dependencies(${CMAKE_PROJECT_NAME} translations)
+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
 
-# Install the executable
+# Dependencies
+## Qt, detect and prefer Qt6 if available
+find_package(Qt6 QUIET CONFIG COMPONENTS Widgets DBus Gui Xml Network Core)
+if (Qt6_FOUND)
+  set(QT_VERSION_MAJOR 6)
+else()
+  find_package(Qt5 REQUIRED CONFIG COMPONENTS Widgets DBus Gui Xml Network Core)
+  set(QT_VERSION_MAJOR 5)
+endif()
+
+message(STATUS "Building against Qt${QT_VERSION_MAJOR}")
+
+find_package(Boost COMPONENTS)
+target_include_directories(squawk PRIVATE ${Boost_INCLUDE_DIRS})
+
+## OMEMO
+if (WITH_OMEMO)
+  find_package(PkgConfig)
+  if (PKG_CONFIG_FOUND)
+    pkg_check_modules(OMEMO libomemo-c)
+    if (OMEMO_FOUND)
+      target_compile_definitions(squawk PRIVATE WITH_OMEMO)
+      message("Building with support of OMEMO")
+    else ()
+      message("libomemo-c package wasn't found, trying to build without OMEMO support")
+      set(WITH_OMEMO OFF)
+    endif ()
+  else ()
+    message("PKG_CONFIG module wasn't found, can not check libomemo-c support, trying to build without OMEMO support")
+    set(WITH_OMEMO OFF)
+  endif ()
+endif ()
+
+## KIO
+if (WITH_KIO)
+  find_package(KF${QT_VERSION_MAJOR}KIO CONFIG)
+
+  if (NOT KF${QT_VERSION_MAJOR}KIO_FOUND)
+    set(WITH_KIO OFF)
+    message("KIO package wasn't found, KIO support modules wouldn't be built")
+  else ()
+    target_compile_definitions(squawk PRIVATE WITH_KIO)
+    message("Building with support of KIO")
+  endif ()
+endif ()
+
+## KWallet
+if (WITH_KWALLET)
+  find_package(KF${QT_VERSION_MAJOR}Wallet CONFIG)
+
+  if (NOT KF${QT_VERSION_MAJOR}Wallet_FOUND)
+    set(WITH_KWALLET OFF)
+    message("KWallet package wasn't found, KWallet support module wouldn't be built")
+  else ()
+    target_compile_definitions(squawk PRIVATE WITH_KWALLET)
+    message("Building with support of KWallet")
+  endif ()
+endif ()
+
+## KConfig
+if (WITH_KCONFIG)
+  find_package(KF${QT_VERSION_MAJOR}Config CONFIG)
+  if (NOT KF${QT_VERSION_MAJOR}Config_FOUND)
+    set(WITH_KCONFIG OFF)
+    message("KConfig package wasn't found, KConfig support modules wouldn't be built")
+  else()
+    find_package(KF${QT_VERSION_MAJOR}ConfigWidgets CONFIG)
+    if (NOT KF${QT_VERSION_MAJOR}ConfigWidgets_FOUND)
+      set(WITH_KCONFIG OFF)
+      message("KConfigWidgets package wasn't found, KConfigWidgets support modules wouldn't be built")
+    else()
+      target_compile_definitions(squawk PRIVATE WITH_KCONFIG)
+      message("Building with support of KConfig")
+      message("Building with support of KConfigWidgets")
+    endif()
+  endif()
+endif()
+
+## QXmpp
+if (SYSTEM_QXMPP)
+  if (WITH_OMEMO)
+    find_package(QXmppQt${QT_VERSION_MAJOR} CONFIG COMPONENTS Omemo)
+  else ()
+    find_package(QXmppQt${QT_VERSION_MAJOR} CONFIG)
+  endif ()
+
+  if (NOT QXmppQt${QT_VERSION_MAJOR}_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(lmdbalqt${QT_VERSION_MAJOR})
+  if (NOT lmdbalqt${QT_VERSION_MAJOR}_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(LMDBALQT${QT_VERSION_MAJOR}::LMDBALQT${QT_VERSION_MAJOR} ALIAS LMDBAL)
+endif()
+
+find_package(OpenSSL REQUIRED)
+
+## 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
+  LMDBALQT${QT_VERSION_MAJOR}::LMDBALQT${QT_VERSION_MAJOR}
+  OpenSSL::Crypto
+  QXmpp::QXmpp
+)
+
+if (WITH_OMEMO)
+  target_link_libraries(squawk PRIVATE QXmpp::Omemo)
+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
+if (NOT CMAKE_BUILD_TYPE)
+  set(CMAKE_BUILD_TYPE Debug)
+endif ()
+
+message("Build type: ${CMAKE_BUILD_TYPE}")
+
+if(CMAKE_COMPILER_IS_GNUCXX)
+  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 -O0)
+    list(APPEND COMPILE_OPTIONS -g3)
+    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(packaging)
+add_subdirectory(plugins)
+add_subdirectory(resources)
+add_subdirectory(shared)
+add_subdirectory(translations)
+add_subdirectory(ui)
+
+## Install the executable
 install(TARGETS squawk DESTINATION ${CMAKE_INSTALL_BINDIR})
-install(FILES ${QM_FILES} DESTINATION ${CMAKE_INSTALL_DATADIR}/Macaw/Squawk/l10n)
-install(FILES squawk.svg DESTINATION ${CMAKE_INSTALL_DATADIR}/icons/hicolor/scalable/apps)
-install(FILES squawk48.png DESTINATION ${CMAKE_INSTALL_DATADIR}/icons/hicolor/48x48/apps RENAME squawk.png)
-install(FILES squawk64.png DESTINATION ${CMAKE_INSTALL_DATADIR}/icons/hicolor/64x64/apps RENAME squawk.png)
-install(FILES squawk128.png DESTINATION ${CMAKE_INSTALL_DATADIR}/icons/hicolor/128x128/apps RENAME squawk.png)
-install(FILES squawk256.png DESTINATION ${CMAKE_INSTALL_DATADIR}/icons/hicolor/256x256/apps RENAME squawk.png)
-install(FILES squawk.desktop DESTINATION ${CMAKE_INSTALL_DATADIR}/applications)
+install(FILES README.md DESTINATION ${CMAKE_INSTALL_DATADIR}/macaw.me/squawk)
+install(FILES LICENSE.md DESTINATION ${CMAKE_INSTALL_DATADIR}/macaw.me/squawk)
+
+if (CMAKE_BUILD_TYPE STREQUAL "Release")
+  if (APPLE)
+    add_custom_command(TARGET squawk POST_BUILD COMMENT "Running macdeployqt..."
+      COMMAND "${Qt${QT_VERSION_MAJOR}Widgets_DIR}/../../../bin/macdeployqt" "${CMAKE_CURRENT_BINARY_DIR}/squawk.app"
+    )
+  endif(APPLE)
+endif()
+

LICENSE.md

@@ -595,17 +595,17 @@ pointer to where the full notice is found.
 
 	<one line to give the program's name and a brief idea of what it does.>
 	Copyright (C) <year>  <name of author>
-	
+
 	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/>.
 

README.md

@@ -1,31 +1,115 @@
-# Sqwawk
+# Squawk - a compact XMPP desktop messenger
 
-A compact XMPP desktop messenger
+[![AUR license](https://img.shields.io/aur/license/squawk?style=flat-square)](https://git.macaw.me/blue/squawk/raw/branch/master/LICENSE.md)
+[![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/projects/squawk/0.2.2.png)
 
 ### Prerequisites
 
-- QT 5.12 *(lower versions might work but it wasn't tested)*
-- uuid _(usually included in some other package, for example it's ***libutil-linux*** in archlinux)_
-- lmdb
-- CMake 3.0 or higher
+- QT 5 or 6
+- CMake 3.10 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)
+- KDE Frameworks: KConfig (optional)
+- KDE Frameworks: KConfigWidgets (optional)
+- Boost (just one little hpp from there)
+- Imagemagick (for compilation, to rasterize an SVG logo)
+
+### Getting
+
+The easiest way to get the Squawk is to install it from AUR (if you use Archlinux like distribution)
+
+Here is the [link](https://aur.archlinux.org/packages/squawk/) for the AUR package
+
+You can also install it from console if you use some AUR wrapper. Here what it's going to look like with *pacaur*
+
+```
+$ pacaur -S squawk
+```
 
 ### Building
 
+You can also the repo and build it from source
+
 Squawk requires Qt with SSL enabled. It uses CMake as build system.
 
-Squawk uses upstream version of QXmpp library so first we need to pull it
+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 submodule update --init --recursive
+$ git clone https://git.macaw.me/blue/squawk
+$ cd squawk
+$ mkdir build
+$ cd build
+$ cmake ..
+$ cmake --build .
 ```
-Then create a folder for the build, go there and build the project using CMake
- 
+
+#### 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
+
 ```
-mkdir build
-cd build
-cmake ..
-cmake --build .
+$ 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.
+
+First install Msys2, and then install `mingw-w64-x86_64-lmdb` and `mingw-w64-x86_64-boost` by pacman.
+
+Then you need to provide the cmake cache entry when calling cmake for configuration:
+
+`<Msys2 Mingw64 Root Directory>`: e.g. `C:/msys64/mingw64`.
+
+```
+$ 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 -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 for windows.
+
+### List of keys
+
+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`)
+- `QT_VERSION_MAJOR` - `6` builds against Qt 6, `5` builds against Qt 6, corresponding version of lmdbal and qxmpp should be installed (default is `6`)
+
 ## License
 
 This project is licensed under the GPLv3 License - see the [LICENSE.md](LICENSE.md) file for details

appveyor.yml

@@ -0,0 +1,117 @@
+image:
+  - Visual Studio 2019
+  - "Previous Ubuntu1804"
+  - macOS-Mojave
+
+branches:
+  except:
+    - gh-pages
+
+for:
+-
+  matrix:
+    only:
+      - image: Visual Studio 2019
+
+  environment:
+      QTDIR: C:\Qt\5.15.2\mingw81_64
+      QTTOOLDIR: C:\Qt\Tools\mingw810_64\bin
+      QTNINJADIR: C:\Qt\Tools\Ninja
+
+  install:
+      - set PATH=%QTTOOLDIR%;%QTNINJADIR%;%QTDIR%\bin;%PATH%
+      - git submodule update --init --recursive
+
+  before_build:
+      - choco install --yes zstandard
+      - choco install --yes --version=7.1.0.2 imagemagick.app
+      - set PATH=C:\Program Files\ImageMagick-7.1.0-Q16-HDRI;%PATH%
+
+      - mkdir lmdb
+      - cd lmdb
+      - curl -OL https://mirror.msys2.org/mingw/mingw64/mingw-w64-x86_64-lmdb-0.9.27-1-any.pkg.tar.zst
+      - zstd -d ./mingw-w64-x86_64-lmdb-0.9.27-1-any.pkg.tar.zst
+      - tar -xvf ./mingw-w64-x86_64-lmdb-0.9.27-1-any.pkg.tar
+      - cd ..
+
+      - mkdir boost
+      - cd boost
+      - curl -OL https://repo.msys2.org/mingw/mingw64/mingw-w64-x86_64-boost-1.77.0-2-any.pkg.tar.zst
+      - zstd -d ./mingw-w64-x86_64-boost-1.77.0-2-any.pkg.tar.zst
+      - tar -xvf ./mingw-w64-x86_64-boost-1.77.0-2-any.pkg.tar
+      - cd ..
+
+      - mkdir build
+      - cd build
+      - cmake -GNinja -DCMAKE_BUILD_TYPE:String=Release -DCMAKE_PREFIX_PATH:STRING=%QTDIR% -DLMDB_ROOT_DIR:PATH=C:/projects/squawk/lmdb/mingw64  -DBOOST_ROOT:PATH=C:/projects/squawk/boost/mingw64 ..
+
+  build_script:
+      - cmake --build .
+      - mkdir deploy
+      - cd deploy
+      - copy ..\squawk.exe .\
+      - copy ..\external\qxmpp\src\libqxmpp.dll .\
+      - windeployqt .\squawk.exe
+      - windeployqt .\libqxmpp.dll
+      - cd ..\..
+
+  artifacts:
+      - path: build/deploy/squawk.exe
+        name: Squawk executable (Qt 5.15.2)
+
+      - path: build/deploy
+        name: Squawk deployment with Qt Framework
+    
+-
+  matrix:
+    only:
+      - image: macOS-Mojave
+
+  install:
+      - brew install lmdb imagemagick boost
+      - git submodule update --init --recursive
+
+  before_build:
+      - mkdir build
+      - cd build
+      - cmake -DCMAKE_BUILD_TYPE:String=Release -DCMAKE_PREFIX_PATH:STRING=$HOME/Qt/5.15.2/clang_64 ..
+
+  build_script:
+      - cmake --build .
+
+  after_build:
+      - zip -r squawk.app.zip squawk.app
+
+  artifacts:
+      - path: build/squawk.app/Contents/MacOS/squawk
+        name: Squawk executable (Qt 5.15.2)
+      - path: build/external/qxmpp/src/
+        name: QXMPP
+      - path: build/squawk.app.zip
+        name: Squawk Bundle with Qt Framework (Qt 5.15.2)
+
+-
+  matrix:
+    only:
+      - image: "Previous Ubuntu1804"
+
+  install:
+      - ls $HOME/Qt
+      - sudo apt update
+      - sudo apt install -y liblmdb-dev liblmdb0 imagemagick mesa-common-dev libglu1-mesa-dev libboost-all-dev
+      - git submodule update --init --recursive
+
+  before_build:
+      - mkdir build
+      - cd build
+      - cmake -DCMAKE_BUILD_TYPE:String=Release -DCMAKE_PREFIX_PATH:STRING=$HOME/Qt/5.12.10/gcc_64 -DCMAKE_BUILD_RPATH="\$ORIGIN" ..
+
+  build_script:
+      - cmake --build .
+
+  after_build:
+      - zip -r squawk.zip squawk -j external/qxmpp/src/libqxmpp*
+
+  artifacts:
+      - path: build/squawk.zip
+        name: Squawk executable and libraries (Qt 5.12)

cmake/MacOSXBundleInfo.plist.in

@@ -0,0 +1,41 @@
+<?xml version="1.0" encoding="UTF-8"?>
+<!DOCTYPE plist PUBLIC "-//Apple Computer//DTD PLIST 1.0//EN" "http://www.apple.com/DTDs/PropertyList-1.0.dtd">
+<plist version="1.0">
+<dict>
+
+    <key>CFBundleDevelopmentRegion</key>
+    <string>English</string>
+    <key>CFBundleExecutable</key>
+    <string>${MACOSX_BUNDLE_EXECUTABLE_NAME}</string>
+    <key>CFBundleGetInfoString</key>
+    <string>${MACOSX_BUNDLE_INFO_STRING}</string>
+    <key>CFBundleIconFile</key>
+    <string>${MACOSX_BUNDLE_ICON_FILE}</string>
+    <key>CFBundleIdentifier</key>
+    <string>${MACOSX_BUNDLE_GUI_IDENTIFIER}</string>
+    <key>CFBundleInfoDictionaryVersion</key>
+    <string>6.0</string>
+    <key>CFBundleLongVersionString</key>
+    <string>${MACOSX_BUNDLE_LONG_VERSION_STRING}</string>
+    <key>CFBundleName</key>
+    <string>${MACOSX_BUNDLE_BUNDLE_NAME}</string>
+    <key>CFBundlePackageType</key>
+    <string>APPL</string>
+    <key>CFBundleShortVersionString</key>
+    <string>${MACOSX_BUNDLE_SHORT_VERSION_STRING}</string>
+    <key>CFBundleSignature</key>
+    <string>????</string>
+    <key>CFBundleVersion</key>
+    <string>${MACOSX_BUNDLE_BUNDLE_VERSION}</string>
+    <key>CSResourcesFileMapped</key>
+    <true/>
+    <key>NSHumanReadableCopyright</key>
+    <string>${MACOSX_BUNDLE_COPYRIGHT}</string>
+
+    <key>NSPrincipalClass</key>
+    <string>NSApplication</string>
+    <key>NSHighResolutionCapable</key>
+    <string>True</string>
+
+</dict>
+</plist>

core/CMakeLists.txt

@@ -1,34 +1,34 @@
-cmake_minimum_required(VERSION 3.0)
-project(squawkCORE)
+set(SIGNALCATCHER_SOURCE signalcatcher.cpp)
+if(WIN32)
+    set(SIGNALCATCHER_SOURCE signalcatcher_win32.cpp)
+endif(WIN32)
 
-set(CMAKE_AUTOMOC ON)
-
-find_package(Qt5Widgets CONFIG REQUIRED)
-find_package(Qt5Network CONFIG REQUIRED)
-
-set(squawkCORE_SRC
-    squawk.cpp
+set(SOURCE_FILES
     account.cpp
-    archive.cpp
-    rosteritem.cpp
-    contact.cpp
+    adapterfunctions.cpp
     conference.cpp
-    storage.cpp
-    networkaccess.cpp
+    contact.cpp
+    rosteritem.cpp
+    ${SIGNALCATCHER_SOURCE}
+    squawk.cpp
 )
 
-# Tell CMake to create the helloworld executable
-add_library(squawkCORE ${squawkCORE_SRC})
+set(HEADER_FILES
+    account.h
+    adapterfunctions.h
+    conference.h
+    contact.h
+    rosteritem.h
+    signalcatcher.h
+    squawk.h
+)
 
-if(SYSTEM_QXMPP)
-    find_package(QXmpp CONFIG REQUIRED)
-    get_target_property(QXMPP_INTERFACE_INCLUDE_DIRECTORIES QXmpp::QXmpp INTERFACE_INCLUDE_DIRECTORIES)
-    target_include_directories(squawkCORE PUBLIC ${QXMPP_INTERFACE_INCLUDE_DIRECTORIES})
-endif()
+target_sources(squawk PRIVATE ${SOURCE_FILES})
 
+target_include_directories(squawk PRIVATE ${LMDB_INCLUDE_DIRS})
 
-# Use the Widgets module from Qt 5.
-target_link_libraries(squawkCORE Qt5::Core)
-target_link_libraries(squawkCORE Qt5::Network)
-target_link_libraries(squawkCORE qxmpp)
-target_link_libraries(squawkCORE lmdb)
+add_subdirectory(handlers)
+add_subdirectory(passwordStorageEngines)
+add_subdirectory(components)
+add_subdirectory(delayManager)
+add_subdirectory(utils)

core/account.h

@@ -15,46 +15,102 @@
  * 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
 
-#ifndef CORE_ACCOUNT_H
-#define CORE_ACCOUNT_H
+#include <QObject>
+#include <QCryptographicHash>
+#include <QFile>
+#include <QMimeDatabase>
+#include <QStandardPaths>
+#include <QDir>
+#include <QTimer>
 
-#include <QtCore/QObject>
 #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>
 #include <QXmppClient.h>
 #include <QXmppBookmarkManager.h>
 #include <QXmppBookmarkSet.h>
-#include "../global.h"
+#include <QXmppUploadRequestManager.h>
+#include <QXmppVCardManager.h>
+#include <QXmppMessageReceiptManager.h>
+#include <QXmppPubSubManager.h>
+
+#include <shared/shared.h>
+#include <shared/identity.h>
+#include <shared/info.h>
+#include <shared/clientid.h>
 #include "contact.h"
 #include "conference.h"
+#include <core/components/networkaccess.h>
+#include <core/delayManager/manager.h>
 
-namespace Core
-{
+#include "handlers/messagehandler.h"
+#include "handlers/rosterhandler.h"
+#include "handlers/vcardhandler.h"
+#include "handlers/discoveryhandler.h"
 
-class Account : public QObject
-{
+#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
+
+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:
-    Account(const QString& p_login, const QString& p_server, const QString& p_password, const QString& p_name, QObject* parent = 0);
+    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();
     
-    void connect();
-    void disconnect();
-    void reconnect();
-    
     Shared::ConnectionState getState() const;
     QString getName() const;
     QString getLogin() const;
     QString getServer() const;
     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);
@@ -62,10 +118,10 @@ public:
     void setPassword(const QString& p_password);
     void setResource(const QString& p_resource);
     void setAvailability(Shared::Availability avail);
-    QString getFullJid() const;
+    void setPasswordType(Shared::AccountPassword pt);
     void sendMessage(const Shared::Message& data);
+    void setActive(bool p_active);
     void requestArchive(const QString& jid, int count, const QString& before);
-    void setReconnectTimes(unsigned int times);
     void subscribeToContact(const QString& jid, const QString& reason);
     void unsubscribeFromContact(const QString& jid, const QString& reason);
     void removeContactRequest(const QString& jid);
@@ -73,15 +129,30 @@ public:
     void addContactToGroupRequest(const QString& jid, const QString& groupName);
     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 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 requestInfo(const QString& jid);
     
 signals:
-    void connectionStateChanged(int);
-    void availabilityChanged(int);
+    void changed(const QMap<QString, QVariant>& data);
+    void connectionStateChanged(Shared::ConnectionState);
+    void availabilityChanged(Shared::Availability);
     void addGroup(const QString& name);
     void removeGroup(const QString& name);
     void addRoom(const QString& jid, const QMap<QString, QVariant>& data);
@@ -94,91 +165,84 @@ signals:
     void addPresence(const QString& jid, const QString& name, const QMap<QString, QVariant>& data);
     void removePresence(const QString& jid, const QString& name);
     void message(const Shared::Message& data);
-    void responseArchive(const QString& jid, const std::list<Shared::Message>& list);
+    void changeMessage(const QString& jid, const QString& id, const QMap<QString, QVariant>& data);
+    void responseArchive(const QString& jid, const std::list<Shared::Message>& list, bool last);
     void error(const QString& text);
     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 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;
-    std::map<QString, QString> achiveQueries;
+    std::map<QString, QString> archiveQueries;
     QXmppClient client;
     QXmppConfiguration config;
     QXmppPresence presence;
     Shared::ConnectionState state;
-    std::map<QString, std::set<QString>> groups;
+
+    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;
-    std::map<QString, Contact*> contacts;
-    std::map<QString, Conference*> conferences;
-    unsigned int maxReconnectTimes;
-    unsigned int reconnectTimes;
+    QXmppRosterManager* rm;
+    QXmppVCardManager* vm;
+    QXmppUploadRequestManager* um;
+    QXmppDiscoveryManager* dm;
+    QXmppMessageReceiptManager* rcpm;
+    bool reconnectScheduled;
+    QTimer* reconnectTimer;
     
-    std::map<QString, QString> queuedContacts;
-    std::set<QString> outOfRosterContacts;
+    NetworkAccess* network;
+    DelayManager::Manager* delay;
+    Shared::AccountPassword passwordType;
+    Error lastError;
+    Shared::Support pepSupport;
+    bool active;
+    bool notReadyPassword;
+    bool loadingOmemo;
     
 private slots:
-    void onClientConnected();
-    void onClientDisconnected();
+    void onClientStateChange(QXmppClient::State state);
     void onClientError(QXmppClient::Error err);
     
-    void onRosterReceived();
-    void onRosterItemAdded(const QString& bareJid);
-    void onRosterItemChanged(const QString& bareJid);
-    void onRosterItemRemoved(const QString& bareJid);
-    void onRosterPresenceChanged(const QString& bareJid, const QString& resource);
-    
     void onPresenceReceived(const QXmppPresence& presence);
-    void onMessageReceived(const QXmppMessage& message);
-    
-    void onCarbonMessageReceived(const QXmppMessage& message);
-    void onCarbonMessageSent(const QXmppMessage& message);
-    
+    void onContactNeedHistory(const QString& before, const QString& after, const QDateTime& at);
+
     void onMamMessageReceived(const QString& bareJid, const QXmppMessage& message);
     void onMamResultsReceived(const QString &queryId, const QXmppResultSetReply &resultSetReply, bool complete);
-    
-    void onMucRoomAdded(QXmppMucRoom* room);
-    void onMucJoinedChanged(bool joined);
-    void onMucAutoJoinChanged(bool autoJoin);
-    void onMucNickNameChanged(const QString& nickName);
-    void onMucSubjectChanged(const QString& subject);
-    void onMucAddParticipant(const QString& nickName, const QMap<QString, QVariant>& data);
-    void onMucChangeParticipant(const QString& nickName, const QMap<QString, QVariant>& data);
-    void onMucRemoveParticipant(const QString& nickName);
-    
-    void bookmarksReceived(const QXmppBookmarkSet& bookmarks);
-    
-    void onContactGroupAdded(const QString& group);
-    void onContactGroupRemoved(const QString& group);
-    void onContactNameChanged(const QString& name);
-    void onContactSubscriptionStateChanged(Shared::SubscriptionState state);
-    void onContactHistoryResponse(const std::list<Shared::Message>& list);
-    void onContactNeedHistory(const QString& before, const QString& after, const QDateTime& at);
-    
+
     void onMamLog(QXmppLogger::MessageType type, const QString &msg);
+
+    void onContactHistoryResponse(const std::list<Shared::Message>& list, bool last);
   
 private:
-    void addedAccount(const QString &bareJid);
-    void handleNewContact(Contact* contact);
-    void handleNewRosterItem(RosterItem* contact);
-    void handleNewConference(Conference* contact);
-    bool handleChatMessage(const QXmppMessage& msg, bool outgoing = false, bool forwarded = false, bool guessing = false);
-    bool handleGroupMessage(const QXmppMessage& msg, bool outgoing = false, bool forwarded = false, bool guessing = false);
-    void addNewRoom(const QString& jid, const QString& nick, const QString& roomName, bool autoJoin);
-    void addToGroup(const QString& jid, const QString& group);
-    void removeFromGroup(const QString& jid, const QString& group);
-    void initializeMessage(Shared::Message& target, const QXmppMessage& source, bool outgoing = false, bool forwarded = false, bool guessing = false) const;
-    Shared::SubscriptionState castSubscriptionState(QXmppRosterIq::Item::SubscriptionType qs) const;
-    void logMessage(const QXmppMessage& msg, const QString& reason = "Message wasn't handled: ");
-    void storeConferences();
-    void clearConferences();
-    
+    void handleDisconnection();
+    void onReconnectTimer();
+    void setPepSupport(Shared::Support support);
+    void runDiscoveryService();
 };
-
 }
-
-
-#endif // CORE_ACCOUNT_H

core/adapterfunctions.cpp

@@ -0,0 +1,271 @@
+/*
+ * 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 "adapterfunctions.h"
+
+void Core::initializeVCard(Shared::VCard& vCard, const QXmppVCardIq& card)
+{
+    vCard.setFullName(card.fullName());
+    vCard.setFirstName(card.firstName());
+    vCard.setMiddleName(card.middleName());
+    vCard.setLastName(card.lastName());
+    vCard.setBirthday(card.birthday());
+    vCard.setNickName(card.nickName());
+    vCard.setDescription(card.description());
+    vCard.setUrl(card.url());
+    QXmppVCardOrganization org = card.organization();
+    vCard.setOrgName(org.organization());
+    vCard.setOrgRole(org.role());
+    vCard.setOrgUnit(org.unit());
+    vCard.setOrgTitle(org.title());
+    
+    QList<QXmppVCardEmail> emails = card.emails();
+    std::deque<Shared::VCard::Email>& myEmails = vCard.getEmails();
+    for (const QXmppVCardEmail& em : emails) {
+        QString addr = em.address();
+        if (addr.size() != 0) {
+            QXmppVCardEmail::Type et = em.type();
+            bool prefered = false;
+            bool accounted = false;
+            if (et & QXmppVCardEmail::Preferred) {
+                prefered = true;
+            }
+            if (et & QXmppVCardEmail::Home) {
+                myEmails.emplace_back(addr, Shared::VCard::Email::home, prefered);
+                accounted = true;
+            } 
+            if (et & QXmppVCardEmail::Work) {
+                myEmails.emplace_back(addr, Shared::VCard::Email::work, prefered);
+                accounted = true;
+            }
+            if (!accounted) {
+                myEmails.emplace_back(addr, Shared::VCard::Email::none, prefered);
+            }
+        }
+        
+    }
+    
+    QList<QXmppVCardPhone> phones = card.phones();
+    std::deque<Shared::VCard::Phone>& myPhones = vCard.getPhones();
+    for (const QXmppVCardPhone& ph : phones) {
+        QString num = ph.number();
+        if (num.size() != 0) {
+            QXmppVCardPhone::Type pt = ph.type();
+            bool prefered = false;
+            bool accounted = false;
+            if (pt & QXmppVCardPhone::Preferred) {
+                prefered = true;
+            }
+            
+            bool home = false;
+            bool work = false;
+            
+            if (pt & QXmppVCardPhone::Home) {
+                home = true;
+            }
+            if (pt & QXmppVCardPhone::Work) {
+                work = true;
+            }
+            
+            
+            if (pt & QXmppVCardPhone::Fax) {
+                if (home || work) {
+                    if (home) {
+                        myPhones.emplace_back(num, Shared::VCard::Phone::fax, Shared::VCard::Phone::home, prefered);
+                    }
+                    if (work) {
+                        myPhones.emplace_back(num, Shared::VCard::Phone::fax, Shared::VCard::Phone::work, prefered);
+                    }
+                } else {
+                    myPhones.emplace_back(num, Shared::VCard::Phone::fax, Shared::VCard::Phone::none, prefered);
+                }
+                accounted = true;
+            } 
+            if (pt & QXmppVCardPhone::Voice) {
+                if (home || work) {
+                    if (home) {
+                        myPhones.emplace_back(num, Shared::VCard::Phone::voice, Shared::VCard::Phone::home, prefered);
+                    }
+                    if (work) {
+                        myPhones.emplace_back(num, Shared::VCard::Phone::voice, Shared::VCard::Phone::work, prefered);
+                    }
+                } else {
+                    myPhones.emplace_back(num, Shared::VCard::Phone::voice, Shared::VCard::Phone::none, prefered);
+                }
+                accounted = true;
+            } 
+            if (pt & QXmppVCardPhone::Pager) {
+                if (home || work) {
+                    if (home) {
+                        myPhones.emplace_back(num, Shared::VCard::Phone::pager, Shared::VCard::Phone::home, prefered);
+                    }
+                    if (work) {
+                        myPhones.emplace_back(num, Shared::VCard::Phone::pager, Shared::VCard::Phone::work, prefered);
+                    }
+                } else {
+                    myPhones.emplace_back(num, Shared::VCard::Phone::pager, Shared::VCard::Phone::none, prefered);
+                }
+                accounted = true;
+            } 
+            if (pt & QXmppVCardPhone::Cell) {
+                if (home || work) {
+                    if (home) {
+                        myPhones.emplace_back(num, Shared::VCard::Phone::cell, Shared::VCard::Phone::home, prefered);
+                    }
+                    if (work) {
+                        myPhones.emplace_back(num, Shared::VCard::Phone::cell, Shared::VCard::Phone::work, prefered);
+                    }
+                } else {
+                    myPhones.emplace_back(num, Shared::VCard::Phone::cell, Shared::VCard::Phone::none, prefered);
+                }
+                accounted = true;
+            } 
+            if (pt & QXmppVCardPhone::Video) {
+                if (home || work) {
+                    if (home) {
+                        myPhones.emplace_back(num, Shared::VCard::Phone::video, Shared::VCard::Phone::home, prefered);
+                    }
+                    if (work) {
+                        myPhones.emplace_back(num, Shared::VCard::Phone::video, Shared::VCard::Phone::work, prefered);
+                    }
+                } else {
+                    myPhones.emplace_back(num, Shared::VCard::Phone::video, Shared::VCard::Phone::none, prefered);
+                }
+                accounted = true;
+            } 
+            if (pt & QXmppVCardPhone::Modem) {
+                if (home || work) {
+                    if (home) {
+                        myPhones.emplace_back(num, Shared::VCard::Phone::modem, Shared::VCard::Phone::home, prefered);
+                    }
+                    if (work) {
+                        myPhones.emplace_back(num, Shared::VCard::Phone::modem, Shared::VCard::Phone::work, prefered);
+                    }
+                } else {
+                    myPhones.emplace_back(num, Shared::VCard::Phone::modem, Shared::VCard::Phone::none, prefered);
+                }
+                accounted = true;
+            } 
+            if (!accounted) {
+                if (home || work) {
+                    if (home) {
+                        myPhones.emplace_back(num, Shared::VCard::Phone::other, Shared::VCard::Phone::home, prefered);
+                    }
+                    if (work) {
+                        myPhones.emplace_back(num, Shared::VCard::Phone::other, Shared::VCard::Phone::work, prefered);
+                    }
+                } else {
+                    myPhones.emplace_back(num, Shared::VCard::Phone::other, Shared::VCard::Phone::none, prefered);
+                }
+            }
+        }
+    }
+}
+
+void Core::initializeQXmppVCard(QXmppVCardIq& iq, const Shared::VCard& card) {
+    iq.setFullName(card.getFullName());
+    iq.setFirstName(card.getFirstName());
+    iq.setMiddleName(card.getMiddleName());
+    iq.setLastName(card.getLastName());
+    iq.setNickName(card.getNickName());
+    iq.setBirthday(card.getBirthday());
+    iq.setDescription(card.getDescription());
+    iq.setUrl(card.getUrl());
+    QXmppVCardOrganization org;
+    org.setOrganization(card.getOrgName());
+    org.setUnit(card.getOrgUnit());
+    org.setRole(card.getOrgRole());
+    org.setTitle(card.getOrgTitle());
+    iq.setOrganization(org);
+    
+    const std::deque<Shared::VCard::Email>& myEmails = card.getEmails();
+    QList<QXmppVCardEmail> emails;
+    for (const Shared::VCard::Email& mEm : myEmails) {
+        QXmppVCardEmail em;
+        QXmppVCardEmail::Type t = QXmppVCardEmail::Internet;
+        if (mEm.prefered) {
+            t = t | QXmppVCardEmail::Preferred;
+        }
+        if (mEm.role == Shared::VCard::Email::home) {
+            t = t | QXmppVCardEmail::Home;
+        } else if (mEm.role == Shared::VCard::Email::work) {
+            t = t | QXmppVCardEmail::Work;
+        }
+        em.setType(t);
+        em.setAddress(mEm.address);
+        
+        emails.push_back(em);
+    }
+    
+    std::map<QString, QXmppVCardPhone> phones;
+    QList<QXmppVCardPhone> phs;
+    const std::deque<Shared::VCard::Phone>& myPhones = card.getPhones();
+    for (const Shared::VCard::Phone& mPh : myPhones) {
+        std::map<QString, QXmppVCardPhone>::iterator itr = phones.find(mPh.number);
+        if (itr == phones.end()) {
+            itr = phones.emplace(mPh.number, QXmppVCardPhone()).first;
+        }
+        QXmppVCardPhone& phone = itr->second;
+        phone.setNumber(mPh.number);
+        
+        switch (mPh.type) {
+            case Shared::VCard::Phone::fax:
+                phone.setType(phone.type() | QXmppVCardPhone::Fax);
+                break;
+            case Shared::VCard::Phone::pager:
+                phone.setType(phone.type() | QXmppVCardPhone::Pager);
+                break;
+            case Shared::VCard::Phone::voice:
+                phone.setType(phone.type() | QXmppVCardPhone::Voice);
+                break;
+            case Shared::VCard::Phone::cell:
+                phone.setType(phone.type() | QXmppVCardPhone::Cell);
+                break;
+            case Shared::VCard::Phone::video:
+                phone.setType(phone.type() | QXmppVCardPhone::Video);
+                break;
+            case Shared::VCard::Phone::modem:
+                phone.setType(phone.type() | QXmppVCardPhone::Modem);
+                break;
+            case Shared::VCard::Phone::other:
+                phone.setType(phone.type() | QXmppVCardPhone::PCS);     //loss of information, but I don't even know what the heck is this type of phone!
+                break;
+        }
+        
+        switch (mPh.role) {
+            case Shared::VCard::Phone::home:
+                phone.setType(phone.type() | QXmppVCardPhone::Home);
+                break;
+            case Shared::VCard::Phone::work:
+                phone.setType(phone.type() | QXmppVCardPhone::Work);
+                break;
+            default:
+                break;
+        }
+        
+        if (mPh.prefered) {
+            phone.setType(phone.type() | QXmppVCardPhone::Preferred);
+        }
+    }
+    for (const std::pair<const QString, QXmppVCardPhone>& phone : phones) {
+        phs.push_back(phone.second);
+    }
+    
+    iq.setEmails(emails);
+    iq.setPhones(phs);
+}

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.cpp

@@ -1,510 +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 "archive.h"
-#include <sys/stat.h>
-#include <sys/types.h>
-#include <QStandardPaths>
-#include <QDebug>
-#include <QDataStream>
-#include <QDir>
-
-Core::Archive::Archive(const QString& p_jid, QObject* parent):
-    QObject(parent),
-    jid(p_jid),
-    opened(false),
-    fromTheBeginning(false),
-    environment(),
-    main(),
-    order(),
-    stats()
-{
-}
-
-Core::Archive::~Archive()
-{
-    close();
-}
-
-void Core::Archive::open(const QString& account)
-{
-    if (!opened) {
-        mdb_env_create(&environment);
-        QString path(QStandardPaths::writableLocation(QStandardPaths::CacheLocation));
-        path += "/" + account + "/" + jid;
-        QDir cache(path);
-        
-        if (!cache.exists()) {
-            bool res = cache.mkpath(path);
-            if (!res) {
-                throw Directory(path.toStdString());
-            }
-        }
-        
-        mdb_env_set_maxdbs(environment, 4);
-        mdb_env_set_mapsize(environment, 512UL * 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, "main", MDB_CREATE, &main);
-        mdb_dbi_open(txn, "order", MDB_CREATE | MDB_INTEGERKEY, &order);
-        mdb_dbi_open(txn, "stats", MDB_CREATE, &stats);
-        mdb_txn_commit(txn);
-        fromTheBeginning = _isFromTheBeginning();
-        opened = true;
-    }
-}
-
-void Core::Archive::close()
-{
-    if (opened) {
-        mdb_dbi_close(environment, stats);
-        mdb_dbi_close(environment, order);
-        mdb_dbi_close(environment, main);
-        mdb_env_close(environment);
-        opened = false;
-    }
-}
-
-bool Core::Archive::addElement(const Shared::Message& message)
-{
-    if (!opened) {
-        throw Closed("addElement", jid.toStdString());
-    }
-    QByteArray ba;
-    QDataStream ds(&ba, QIODevice::WriteOnly);
-    message.serialize(ds);
-    quint64 stamp = message.getTime().toMSecsSinceEpoch();
-    const std::string& id = message.getId().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();
-    MDB_txn *txn;
-    mdb_txn_begin(environment, NULL, 0, &txn);
-    int rc;
-    rc = mdb_put(txn, main, &lmdbKey, &lmdbData, MDB_NOOVERWRITE);
-    if (rc == 0) {
-        MDB_val orderKey;
-        orderKey.mv_size = 8;
-        orderKey.mv_data = (uint8_t*) &stamp;
-        
-        rc = mdb_put(txn, order, &orderKey, &lmdbKey, 0);
-        if (rc) {
-            qDebug() << "An element couldn't be inserted into the index" << mdb_strerror(rc);
-            mdb_txn_abort(txn);
-            return false;
-        } else {
-            rc = mdb_txn_commit(txn);
-            if (rc) {
-                qDebug() << "A transaction error: " << mdb_strerror(rc);
-                return false;
-            }
-            return true;
-        }
-    } else {
-        qDebug() << "An element couldn't been added to the archive, skipping" << mdb_strerror(rc);
-        mdb_txn_abort(txn);
-        return false;
-    }
-}
-
-void Core::Archive::clear()
-{
-    if (!opened) {
-        throw Closed("clear", jid.toStdString());
-    }
-    
-    MDB_txn *txn;
-    mdb_txn_begin(environment, NULL, 0, &txn);
-    mdb_drop(txn, main, 0);
-    mdb_drop(txn, order, 0);
-    mdb_drop(txn, stats, 0);
-    mdb_txn_commit(txn);
-}
-
-Shared::Message Core::Archive::getElement(const QString& id)
-{
-    if (!opened) {
-        throw Closed("getElement", jid.toStdString());
-    }
-    
-    std::string strKey = id.toStdString();
-    
-    MDB_val lmdbKey, lmdbData;
-    lmdbKey.mv_size = strKey.size();
-    lmdbKey.mv_data = (char*)strKey.c_str();
-    
-    MDB_txn *txn;
-    int rc;
-    mdb_txn_begin(environment, NULL, MDB_RDONLY, &txn);
-    rc = mdb_get(txn, main, &lmdbKey, &lmdbData);
-    if (rc) {
-        qDebug() <<"Get error: " << mdb_strerror(rc);
-        mdb_txn_abort(txn);
-        throw NotFound(id.toStdString(), jid.toStdString());
-    } else {
-        QByteArray ba((char*)lmdbData.mv_data, lmdbData.mv_size);
-        QDataStream ds(&ba, QIODevice::ReadOnly);
-        
-        Shared::Message msg;
-        msg.deserialize(ds);
-        mdb_txn_abort(txn);
-        return msg;
-    }
-}
-
-Shared::Message Core::Archive::newest()
-{
-    QString id = newestId();
-    return getElement(id);
-}
-
-QString Core::Archive::newestId()
-{
-    if (!opened) {
-        throw Closed("newestId", jid.toStdString());
-    }
-    MDB_txn *txn;
-    int rc;
-    rc = mdb_txn_begin(environment, NULL, MDB_RDONLY, &txn);
-    MDB_cursor* cursor;
-    rc = mdb_cursor_open(txn, order, &cursor);
-    MDB_val lmdbKey, lmdbData;
-    
-    rc = mdb_cursor_get(cursor, &lmdbKey, &lmdbData, MDB_LAST);
-    if (rc) {
-        qDebug() << "Error geting newestId " << mdb_strerror(rc);
-        mdb_cursor_close(cursor);
-        mdb_txn_abort(txn);
-        throw Empty(jid.toStdString());
-    } else {
-        std::string sId((char*)lmdbData.mv_data, lmdbData.mv_size);
-        mdb_cursor_close(cursor);
-        mdb_txn_abort(txn);
-        return sId.c_str();
-    }
-}
-
-QString Core::Archive::oldestId()
-{
-    if (!opened) {
-        throw Closed("oldestId", jid.toStdString());
-    }
-    MDB_txn *txn;
-    int rc;
-    rc = mdb_txn_begin(environment, NULL, MDB_RDONLY, &txn);
-    MDB_cursor* cursor;
-    rc = mdb_cursor_open(txn, order, &cursor);
-    MDB_val lmdbKey, lmdbData;
-    
-    rc = mdb_cursor_get(cursor, &lmdbKey, &lmdbData, MDB_FIRST);
-    if (rc) {
-        qDebug() << "Error geting oldestId " << mdb_strerror(rc);
-        mdb_cursor_close(cursor);
-        mdb_txn_abort(txn);
-        throw Empty(jid.toStdString());
-    } else {
-        std::string sId((char*)lmdbData.mv_data, lmdbData.mv_size);
-        mdb_cursor_close(cursor);
-        mdb_txn_abort(txn);
-        return sId.c_str();
-    }
-}
-
-Shared::Message Core::Archive::oldest()
-{
-    return getElement(oldestId());
-}
-
-unsigned int Core::Archive::addElements(const std::list<Shared::Message>& messages)
-{
-    if (!opened) {
-        throw Closed("addElements", jid.toStdString());
-    }
-    
-    int success = 0;
-    int rc = 0;
-    MDB_val lmdbKey, lmdbData;
-    MDB_txn *txn;
-    mdb_txn_begin(environment, NULL, 0, &txn);
-    std::list<Shared::Message>::const_iterator itr = messages.begin();
-    while (rc == 0 && itr != messages.end()) {
-        const Shared::Message& message = *itr;
-        
-        QByteArray ba;
-        QDataStream ds(&ba, QIODevice::WriteOnly);
-        message.serialize(ds);
-        quint64 stamp = message.getTime().toMSecsSinceEpoch();
-        const std::string& id = message.getId().toStdString();
-        
-        lmdbKey.mv_size = id.size();
-        lmdbKey.mv_data = (char*)id.c_str();
-        lmdbData.mv_size = ba.size();
-        lmdbData.mv_data = (uint8_t*)ba.data();
-        
-        rc = mdb_put(txn, main, &lmdbKey, &lmdbData, MDB_NOOVERWRITE);
-        if (rc == 0) {
-            MDB_val orderKey;
-            orderKey.mv_size = 8;
-            orderKey.mv_data = (uint8_t*) &stamp;
-            
-            rc = mdb_put(txn, order, &orderKey, &lmdbKey, 0);
-            if (rc) {
-                qDebug() << "An element couldn't be inserted into the index, aborting the transaction" << mdb_strerror(rc);
-            } else {
-                //qDebug() << "element added with id" << message.getId() << "stamp" << message.getTime();
-                success++;
-            }
-        } else {
-            if (rc == MDB_KEYEXIST) {
-                rc = 0;
-            } else {
-                qDebug() << "An element couldn't been added to the archive, aborting the transaction" << mdb_strerror(rc);
-            }
-        }
-        itr++;
-    }
-    
-    if (rc != 0) {
-        mdb_txn_abort(txn);
-        success = 0;
-    } else {
-        mdb_txn_commit(txn);
-    }
-    
-    return success;
-}
-
-long unsigned int Core::Archive::size() const
-{
-    if (!opened) {
-        throw Closed("size", jid.toStdString());
-    }
-    MDB_txn *txn;
-    int rc;
-    rc = mdb_txn_begin(environment, NULL, MDB_RDONLY, &txn);
-    MDB_stat stat;
-    mdb_stat(txn, order, &stat);
-    mdb_txn_abort(txn);
-    return stat.ms_entries;
-}
-
-std::list<Shared::Message> Core::Archive::getBefore(int count, const QString& id)
-{
-    if (!opened) {
-        throw Closed("getBefore", jid.toStdString());
-    }
-    std::list<Shared::Message> res;
-    MDB_cursor* cursor;
-    MDB_txn *txn;
-    MDB_val lmdbKey, lmdbData;
-    int rc;
-    rc = mdb_txn_begin(environment, NULL, MDB_RDONLY, &txn);
-    if (id == "") {
-        rc = mdb_cursor_open(txn, order, &cursor);
-        rc = mdb_cursor_get(cursor, &lmdbKey, &lmdbData, MDB_LAST);
-        if (rc) {
-            qDebug() << "Error getting before" << mdb_strerror(rc) << ", id:" << id;
-            mdb_cursor_close(cursor);
-            mdb_txn_abort(txn);
-            
-            throw Empty(jid.toStdString());
-        }
-    } else {
-        std::string stdId(id.toStdString());
-        lmdbKey.mv_size = stdId.size();
-        lmdbKey.mv_data = (char*)stdId.c_str();
-        rc = mdb_get(txn, main, &lmdbKey, &lmdbData);
-        if (rc) {
-            qDebug() <<"Error getting before: no reference message" << mdb_strerror(rc) << ", id:" << id;
-            mdb_txn_abort(txn);
-            throw NotFound(stdId, jid.toStdString());
-        } else {
-            QByteArray ba((char*)lmdbData.mv_data, lmdbData.mv_size);
-            QDataStream ds(&ba, QIODevice::ReadOnly);
-            
-            Shared::Message msg;
-            msg.deserialize(ds);
-            quint64 stamp = msg.getTime().toMSecsSinceEpoch();
-            lmdbKey.mv_data = (quint8*)&stamp;
-            lmdbKey.mv_size = 8;
-            
-            rc = mdb_cursor_open(txn, order, &cursor);
-            rc = mdb_cursor_get(cursor, &lmdbKey, &lmdbData, MDB_SET);
-            
-            if (rc) {
-                qDebug() << "Error getting before: couldn't set " << mdb_strerror(rc);
-                mdb_cursor_close(cursor);
-                mdb_txn_abort(txn);
-                throw NotFound(stdId, jid.toStdString());
-            } else {
-                rc = mdb_cursor_get(cursor, &lmdbKey, &lmdbData, MDB_PREV);
-                if (rc) {
-                    qDebug() << "Error getting before, couldn't prev " << mdb_strerror(rc);
-                    mdb_cursor_close(cursor);
-                    mdb_txn_abort(txn);
-                    throw NotFound(stdId, jid.toStdString());
-                }
-            }
-        }
-    }
-    
-    do {
-        MDB_val dKey, dData;
-        dKey.mv_size = lmdbData.mv_size;
-        dKey.mv_data = lmdbData.mv_data;
-        rc = mdb_get(txn, main, &dKey, &dData);
-        if (rc) {
-            qDebug() <<"Get error: " << mdb_strerror(rc);
-            std::string sId((char*)lmdbData.mv_data, lmdbData.mv_size);
-            mdb_txn_abort(txn);
-            throw NotFound(sId, jid.toStdString());
-        } else {
-            QByteArray ba((char*)dData.mv_data, dData.mv_size);
-            QDataStream ds(&ba, QIODevice::ReadOnly);
-            
-            res.emplace_back();
-            Shared::Message& msg = res.back();
-            msg.deserialize(ds);
-        }
-        
-        --count;
-        
-    } while (count > 0 && mdb_cursor_get(cursor, &lmdbKey, &lmdbData, MDB_PREV) == 0);
-    
-    mdb_cursor_close(cursor);
-    mdb_txn_abort(txn);
-    return res;
-}
-
-bool Core::Archive::_isFromTheBeginning()
-{
-    std::string strKey = "beginning";
-    
-    MDB_val lmdbKey, lmdbData;
-    lmdbKey.mv_size = strKey.size();
-    lmdbKey.mv_data = (char*)strKey.c_str();
-    
-    MDB_txn *txn;
-    int rc;
-    mdb_txn_begin(environment, NULL, MDB_RDONLY, &txn);
-    rc = mdb_get(txn, stats, &lmdbKey, &lmdbData);
-    if (rc == MDB_NOTFOUND) {
-        mdb_txn_abort(txn);
-        return false;
-    } else if (rc) {
-        qDebug() <<"isFromTheBeginning error: " << mdb_strerror(rc);
-        mdb_txn_abort(txn);
-        throw NotFound(strKey, jid.toStdString());
-    } else {
-        uint8_t value = *(uint8_t*)(lmdbData.mv_data);
-        bool is;
-        if (value == 144) {
-            is = false;
-        } else if (value == 72) {
-            is = true;
-        } else {
-            qDebug() <<"isFromTheBeginning error: stored value doesn't match any magic number, the answer is most probably wrong";
-        }
-        mdb_txn_abort(txn);
-        return is;
-    }
-}
-
-bool Core::Archive::isFromTheBeginning()
-{
-    if (!opened) {
-        throw Closed("isFromTheBeginning", jid.toStdString());
-    }
-    return fromTheBeginning;
-}
-
-void Core::Archive::setFromTheBeginning(bool is)
-{
-    if (!opened) {
-        throw Closed("setFromTheBeginning", jid.toStdString());
-    }
-    if (fromTheBeginning != is) {
-        fromTheBeginning = is;
-        const std::string& id = "beginning";
-        uint8_t value = 144;
-        if (is) {
-            value = 72;
-        }
-        
-        MDB_val lmdbKey, lmdbData;
-        lmdbKey.mv_size = id.size();
-        lmdbKey.mv_data = (char*)id.c_str();
-        lmdbData.mv_size = sizeof value;
-        lmdbData.mv_data = &value;
-        MDB_txn *txn;
-        mdb_txn_begin(environment, NULL, 0, &txn);
-        int rc;
-        rc = mdb_put(txn, stats, &lmdbKey, &lmdbData, 0);
-        if (rc != 0) {
-            qDebug() << "Couldn't store beginning key into stat database:" << mdb_strerror(rc);
-            mdb_txn_abort(txn);
-        }
-        mdb_txn_commit(txn);
-    }
-}
-
-void Core::Archive::printOrder()
-{
-    qDebug() << "Printing order";
-    MDB_txn *txn;
-    int rc;
-    rc = mdb_txn_begin(environment, NULL, MDB_RDONLY, &txn);
-    MDB_cursor* cursor;
-    rc = mdb_cursor_open(txn, order, &cursor);
-    MDB_val lmdbKey, lmdbData;
-    
-    rc = mdb_cursor_get(cursor, &lmdbKey, &lmdbData, MDB_FIRST);
-    
-    do {
-        std::string sId((char*)lmdbData.mv_data, lmdbData.mv_size);
-        qDebug() << QString(sId.c_str());
-    } while (mdb_cursor_get(cursor, &lmdbKey, &lmdbData, MDB_NEXT) == 0);
-    
-    mdb_cursor_close(cursor);
-    mdb_txn_abort(txn);
-}
-
-void Core::Archive::printKeys()
-{
-    MDB_txn *txn;
-    int rc;
-    rc = mdb_txn_begin(environment, NULL, MDB_RDONLY, &txn);
-    MDB_cursor* cursor;
-    rc = mdb_cursor_open(txn, main, &cursor);
-    MDB_val lmdbKey, lmdbData;
-    
-    rc = mdb_cursor_get(cursor, &lmdbKey, &lmdbData, MDB_FIRST);
-    
-    do {
-        std::string sId((char*)lmdbKey.mv_data, lmdbKey.mv_size);
-        qDebug() << QString(sId.c_str());
-    } while (mdb_cursor_get(cursor, &lmdbKey, &lmdbData, MDB_NEXT) == 0);
-    
-    mdb_cursor_close(cursor);
-    mdb_txn_abort(txn);
-}

core/archive.h

@@ -1,142 +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 "../global.h"
-#include <lmdb.h>
-#include "../exception.h"
-#include <list>
-
-namespace Core {
-
-class Archive : public QObject
-{
-    Q_OBJECT
-public:
-    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);
-    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);
-    
-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 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;
-    };
-    
-private:
-    bool opened;
-    bool fromTheBeginning;
-    MDB_env* environment;
-    MDB_dbi main;
-    MDB_dbi order;
-    MDB_dbi stats;
-    
-    bool _isFromTheBeginning();
-    void printOrder();
-    void printKeys();
-};
-
-}
-
-#endif // CORE_ARCHIVE_H

core/components/CMakeLists.txt

@@ -0,0 +1,15 @@
+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})

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

@@ -0,0 +1,560 @@
+/*
+ * 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 <QtWidgets/QApplication>
+#include <QtCore/QDir>
+
+#include "networkaccess.h"
+
+Core::NetworkAccess::NetworkAccess(QObject* parent):
+    QObject(parent),
+    running(false),
+    manager(0),
+    storage("fileURLStorage"),
+    downloads(),
+    uploads(),
+    currentPath()
+{
+    QSettings settings;
+    currentPath = settings.value("downloadsPath").toString();
+}
+
+Core::NetworkAccess::~NetworkAccess() {
+    stop();
+}
+
+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";
+    } else {
+        try {
+            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())
+                    emit downloadFileComplete(p.second, p.first);
+                else
+                    startDownload(p.second, url);
+            } else {
+                startDownload(p.second, url);
+            }
+        } 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 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() {
+    if (!running) {
+        manager = new QNetworkAccessManager();
+#if QT_VERSION >= QT_VERSION_CHECK(5, 15, 0)
+        manager->setTransferTimeout();
+#endif
+        storage.open();
+        running = true;
+    }
+}
+
+void Core::NetworkAccess::stop() {
+    if (running) {
+        storage.close();
+        manager->deleteLater();
+        manager = 0;
+        running = false;
+        
+        for (std::map<QString, Transfer*>::const_iterator itr = downloads.begin(), end = downloads.end(); itr != end; ++itr) {
+            itr->second->success = false;
+            itr->second->reply->abort();        //assuming it's gonna call onRequestFinished slot
+        }
+    }
+}
+
+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);
+    if (itr == downloads.end()) {
+        qDebug() << "an error downloading" << url << ": the request had some progress but seems like no one is waiting for it, skipping";
+    } else {
+        Transfer* dwn = itr->second;
+        if (dwn->success) {
+            qreal received = bytesReceived;
+            qreal total = bytesTotal;
+            qreal progress = received/total;
+            dwn->progress = progress;
+            emit loadFileProgress(dwn->messages, progress, false);
+        }
+    }
+}
+
+void Core::NetworkAccess::onDownloadError(QNetworkReply::NetworkError code) {
+    qDebug() << "DEBUG: DOWNLOAD ERROR";
+    QNetworkReply* rpl = static_cast<QNetworkReply*>(sender());
+    qDebug() << rpl->errorString();
+    QString url = rpl->url().toString();
+    std::map<QString, Transfer*>::const_iterator itr = downloads.find(url);
+    if (itr == downloads.end()) {
+        qDebug() << "an error downloading" << url << ": the request is reporting an error but seems like no one is waiting for it, skipping";
+    } else {
+        QString errorText = getErrorText(code);
+        //if (errorText.size() > 0) {
+            itr->second->success = false;
+            Transfer* dwn = itr->second;
+            emit loadFileError(dwn->messages, errorText, false);
+        //}
+    }
+}
+
+void Core::NetworkAccess::onDownloadSSLError(const QList<QSslError>& errors) {
+    qDebug() << "DEBUG: DOWNLOAD SSL 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);
+    if (itr == downloads.end()) {
+        qDebug() << "an SSL error downloading" << url << ": the request is reporting an error but seems like no one is waiting for it, skipping";
+    } else {
+        //if (errorText.size() > 0) {
+        itr->second->success = false;
+        Transfer* dwn = itr->second;
+        emit loadFileError(dwn->messages, "SSL errors occured", false);
+        //}
+    }
+}
+
+QString Core::NetworkAccess::getErrorText(QNetworkReply::NetworkError code) {
+    QString errorText("");
+    switch (code) {
+        case QNetworkReply::NoError:
+            //this never is supposed to happen
+            break;
+
+    // network layer errors [relating to the destination server] (1-99):
+        case QNetworkReply::ConnectionRefusedError:
+            errorText = "Connection refused";
+            break;
+        case QNetworkReply::RemoteHostClosedError:
+            errorText = "Remote server closed the connection";
+            break;
+        case QNetworkReply::HostNotFoundError:
+            errorText = "Remote host is not found";
+            break;
+        case QNetworkReply::TimeoutError:
+            errorText = "Connection was closed because it timed out";
+            break;
+        case QNetworkReply::OperationCanceledError:
+            //this means I closed it myself by abort() or close()
+            //I don't call them directory, but this is the error code
+            //Qt returns when it can not resume donwload after the network failure
+            //or when the download is canceled by the timout; 
+            errorText = "Connection lost";
+            break;
+        case QNetworkReply::SslHandshakeFailedError:
+            errorText = "Security error";           //TODO need to handle sslErrors signal to get a better description here
+            break;
+        case QNetworkReply::TemporaryNetworkFailureError:
+            //this means the connection is lost by opened route, but it's going to be resumed, not sure I need to notify
+            break;
+        case QNetworkReply::NetworkSessionFailedError:
+            errorText = "Outgoing connection problem";
+            break;
+        case QNetworkReply::BackgroundRequestNotAllowedError:
+            errorText = "Background request is not allowed";
+            break;
+        case QNetworkReply::TooManyRedirectsError:
+            errorText = "The request was  redirected too many times";
+            break;
+        case QNetworkReply::InsecureRedirectError:
+            errorText = "The request was redirected to insecure connection";
+            break;
+        case QNetworkReply::UnknownNetworkError:
+            errorText = "Unknown network error";
+            break;
+
+    // proxy errors (101-199):
+        case QNetworkReply::ProxyConnectionRefusedError:
+            errorText = "The connection to the proxy server was refused";
+            break;
+        case QNetworkReply::ProxyConnectionClosedError:
+            errorText = "Proxy server closed the connection";
+            break;
+        case QNetworkReply::ProxyNotFoundError:
+            errorText = "Proxy host was not found";
+            break;
+        case QNetworkReply::ProxyTimeoutError:
+            errorText = "Connection to the proxy server was closed because it timed out";
+            break;
+        case QNetworkReply::ProxyAuthenticationRequiredError:
+            errorText = "Couldn't connect to proxy server, authentication is required";
+            break;
+        case QNetworkReply::UnknownProxyError:
+            errorText = "Unknown proxy error";
+            break;
+
+    // content errors (201-299):
+        case QNetworkReply::ContentAccessDenied:
+            errorText = "The access to file is denied";
+            break;
+        case QNetworkReply::ContentOperationNotPermittedError:
+            errorText = "The operation over requesting file is not permitted";
+            break;
+        case QNetworkReply::ContentNotFoundError:
+            errorText = "The file was not found";
+            break;
+        case QNetworkReply::AuthenticationRequiredError:
+            errorText = "Couldn't access the file, authentication is required";
+            break;
+        case QNetworkReply::ContentReSendError:
+            errorText = "Sending error, one more attempt will probably solve this problem";
+            break;
+        case QNetworkReply::ContentConflictError:
+            errorText = "The request could not be completed due to a conflict with the current state of the resource";
+            break;
+        case QNetworkReply::ContentGoneError:
+            errorText = "The requested resource is no longer available at the server";
+            break;
+        case QNetworkReply::UnknownContentError:
+            errorText = "Unknown content error";
+            break;
+
+    // protocol errors
+        case QNetworkReply::ProtocolUnknownError:
+            errorText = "Unknown protocol error";
+            break;
+        case QNetworkReply::ProtocolInvalidOperationError:
+            errorText = "Requested operation is not permitted in this protocol";
+            break;
+        case QNetworkReply::ProtocolFailure:
+            errorText = "Low level protocol error";
+            break;
+
+    // Server side errors (401-499)
+        case QNetworkReply::InternalServerError:
+            errorText = "Internal server error";
+            break;
+        case QNetworkReply::OperationNotImplementedError:
+            errorText = "Server doesn't support requested operation";
+            break;
+        case QNetworkReply::ServiceUnavailableError:
+            errorText = "The server is not available for this operation right now";
+            break;
+        case QNetworkReply::UnknownServerError:
+            errorText = "Unknown server error";
+            break;
+    }
+    return errorText;
+}
+
+
+void Core::NetworkAccess::onDownloadFinished() {
+    qDebug() << "DEBUG: DOWNLOAD FINISHED";
+    QNetworkReply* rpl = static_cast<QNetworkReply*>(sender());
+    QString url = rpl->url().toString();
+    std::map<QString, Transfer*>::const_iterator itr = downloads.find(url);
+    if (itr == downloads.end()) {
+        qDebug() << "an error downloading" << url << ": the request is done but there is no record of it being downloaded, ignoring";
+    } else {
+        Transfer* dwn = itr->second;
+        if (dwn->success) {
+            qDebug() << "download success for" << url;
+            QString err;
+            QStringList hops = url.split("/");
+            QString fileName = hops.back();
+            QString jid;
+            if (dwn->messages.size() > 0)
+                jid = dwn->messages.front().jid;
+            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(Shared::resolvePath(path));
+                if (file.open(QIODevice::WriteOnly)) {
+                    file.write(dwn->reply->readAll());
+                    file.close();
+                    storage.setPath(url, path);
+                    qDebug() << "file" << path << "was successfully downloaded";
+                } else {
+                    qDebug() << "couldn't save file" << path;
+                    err = "Error opening file to write:" + file.errorString();
+                }
+            } else {
+                err = "Couldn't prepare a directory for file";
+            }
+            
+            if (path.size() > 0)
+                emit downloadFileComplete(dwn->messages, path);
+            else
+                emit loadFileError(dwn->messages, "Error saving file " + url + "; " + err, false);
+        }
+        
+        dwn->reply->deleteLater();
+        delete dwn;
+        downloads.erase(itr);
+    }
+}
+
+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);
+    connect(dwn->reply, &QNetworkReply::downloadProgress, this, &NetworkAccess::onDownloadProgress);
+    connect(dwn->reply, &QNetworkReply::sslErrors, this, &NetworkAccess::onDownloadSSLError);
+#if QT_VERSION >= QT_VERSION_CHECK(5, 15, 0)
+    connect(dwn->reply, qOverload<QNetworkReply::NetworkError>(&QNetworkReply::errorOccurred), this, &NetworkAccess::onDownloadError);
+#else
+    connect(dwn->reply, qOverload<QNetworkReply::NetworkError>(&QNetworkReply::error), this, &NetworkAccess::onDownloadError);
+#endif
+    connect(dwn->reply, &QNetworkReply::finished, this, &NetworkAccess::onDownloadFinished);
+    downloads.insert(std::make_pair(url, dwn));
+    emit loadFileProgress(dwn->messages, 0, false);
+}
+
+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);
+    if (itr == uploads.end()) {
+        qDebug() << "an error uploading" << url << ": the request is reporting an error but there is no record of it being uploading, ignoring";
+    } else {
+        QString errorText = getErrorText(code);
+        //if (errorText.size() > 0) {
+            itr->second->success = false;
+            Transfer* upl = itr->second;
+            emit loadFileError(upl->messages, errorText, true);
+        //}
+        
+        //TODO deletion?
+    }
+}
+
+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);
+    if (itr == downloads.end()) {
+        qDebug() << "an error uploading" << url << ": the request is done there is no record of it being uploading, ignoring";
+    } else {
+        Transfer* upl = itr->second;
+        if (upl->success) {
+            qDebug() << "upload success for" << url;
+
+            // Copy file to Download folder if it is a temp file. See Conversation::onImagePasted.
+            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 + 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, 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)
+                    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();
+        upl->file->close();
+        upl->file->deleteLater();
+        delete upl;
+        uploads.erase(itr);
+    }
+}
+
+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);
+    if (itr == uploads.end()) {
+        qDebug() << "an error downloading" << url << ": the request had some progress but seems like no one is waiting for it, skipping";
+    } else {
+        Transfer* upl = itr->second;
+        if (upl->success) {
+            qreal received = bytesReceived;
+            qreal total = bytesTotal;
+            qreal progress = received/total;
+            upl->progress = progress;
+            emit loadFileProgress(upl->messages, progress, true);
+        }
+    }
+}
+
+QString Core::NetworkAccess::getFileRemoteUrl(const QString& path) {
+    QString p = Shared::squawkifyPath(path);
+    
+    try {
+        p = storage.getUrl(p);
+    } catch (const LMDBAL::NotFound& err) {
+        p = "";
+    } catch (...) {
+        throw;
+    }
+    
+    return p;
+}
+
+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);
+    for (QMap<QString, QString>::const_iterator itr = headers.begin(), end = headers.end(); itr != end; itr++) {
+        req.setRawHeader(itr.key().toUtf8(), itr.value().toUtf8());
+    }
+    if (file->open(QIODevice::ReadOnly)) {
+        upl->reply = manager->put(req, file);
+        
+        connect(upl->reply, &QNetworkReply::uploadProgress, this, &NetworkAccess::onUploadProgress);
+#if QT_VERSION >= QT_VERSION_CHECK(5, 15, 0)
+        connect(upl->reply, qOverload<QNetworkReply::NetworkError>(&QNetworkReply::errorOccurred), this, &NetworkAccess::onUploadError);
+#else
+        connect(upl->reply, qOverload<QNetworkReply::NetworkError>(&QNetworkReply::error), this, &NetworkAccess::onUploadError);
+#endif
+        connect(upl->reply, &QNetworkReply::finished, this, &NetworkAccess::onUploadFinished);
+        uploads.insert(std::make_pair(put.toString(), upl));
+        emit loadFileProgress(upl->messages, 0, true);
+    } else {
+        qDebug() << "couldn't upload file" << path;
+        emit loadFileError(upl->messages, "Error opening file", true);
+        delete file;
+        delete upl;
+    }
+}
+
+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())
+        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) {
+    storage.addFile(url, path, account, jid, id);
+}
+
+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) {
+            std::list<Shared::MessageInfo>& messages = info->messages;
+            bool dup = false;
+            for (const Shared::MessageInfo& info : messages) {
+                if (info.account == acc && info.jid == jid && info.messageId == id) {
+                    dup = true;
+                    break;
+                }
+            }
+            if (!dup) {
+                info->messages.emplace_back(acc, jid, id);   //TODO notification is going to happen the next tick, is that okay?
+                return true;
+            }
+        }
+    }
+    
+    return false;
+}
+
+QString Core::NetworkAccess::prepareDirectory(const QString& jid) {
+    QString path = currentPath;
+    QString addition;
+    if (jid.size() > 0) {
+        addition = jid;
+        path += QDir::separator() + jid;
+    }
+
+    QDir location(path);
+    
+    if (!location.exists()) {
+        bool res = location.mkpath(path);
+        if (!res)
+            return "";
+        else
+            return "squawk://" + addition;
+    }
+    return "squawk://" + addition;
+}
+
+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)
+        suffix += "." + (*sItr);
+
+    QString postfix("");
+    QString resolvedPath = Shared::resolvePath(path);
+    QString count("");
+    QFileInfo proposedName(resolvedPath + QDir::separator() + realName + count + suffix);
+
+    int counter = 0;
+    while (proposedName.exists()) {
+        count = QString("(") + std::to_string(++counter).c_str() + ")";
+        proposedName = QFileInfo(resolvedPath + QDir::separator() + realName + count + suffix);
+    }
+
+    return path + QDir::separator() + realName + count + suffix;
+}
+
+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) {
+    return storage.deletedFile(path);
+}
+
+void Core::NetworkAccess::moveFilesDirectory(const QString& newPath) {
+    QDir dir(currentPath);
+    bool success = true;
+    qDebug() << "moving" << currentPath << "to" << newPath;
+    for (QString fileName : dir.entryList(QDir::Files | QDir::Dirs | QDir::NoDotAndDotDot | QDir::Hidden | QDir::System))
+        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

@@ -0,0 +1,100 @@
+/*
+ * 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 <QNetworkAccessManager>
+#include <QNetworkReply>
+#include <QNetworkRequest>
+#include <QFileInfo>
+#include <QFile>
+#include <QStandardPaths>
+#include <QSettings>
+
+#include <set>
+
+#include <shared/pathcheck.h>
+#include "urlstorage.h"
+
+namespace Core {
+
+//TODO Need to describe how to get rid of records when file is no longer reachable;
+class NetworkAccess : public QObject {
+    Q_OBJECT
+    struct Transfer;
+public:
+    NetworkAccess(QObject* parent = nullptr);
+    virtual ~NetworkAccess();
+    
+    void start();
+    void stop();
+    
+    QString getFileRemoteUrl(const QString& path);
+    QString addMessageAndCheckForPath(const QString& url, const QString& account, const QString& jid, const QString& id);
+    void uploadFile(const Shared::MessageInfo& info, const QString& path, const QUrl& put, const QUrl& get, const QMap<QString, QString> headers);
+    bool checkAndAddToUploading(const QString& acc, const QString& jid, const QString id, const QString path);
+    std::list<Shared::MessageInfo> reportPathInvalid(const QString& path);
+    
+signals:
+    void loadFileProgress(const std::list<Shared::MessageInfo>& msgs, qreal value, bool up);
+    void loadFileError(const std::list<Shared::MessageInfo>& msgs, const QString& text, bool up);
+    void uploadFileComplete(const std::list<Shared::MessageInfo>& msgs, const QString& url, const QString& path);
+    void downloadFileComplete(const std::list<Shared::MessageInfo>& msgs, const QString& path);
+    
+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);
+    QString getErrorText(QNetworkReply::NetworkError code);
+    QString prepareDirectory(const QString& jid);
+    QString checkFileName(const QString& name, const QString& path);
+    
+private slots:
+    void onDownloadProgress(qint64 bytesReceived, qint64 bytesTotal);
+    void onDownloadError(QNetworkReply::NetworkError code);
+    void onDownloadSSLError(const QList<QSslError> &errors);
+    void onDownloadFinished();
+    void onUploadProgress(qint64 bytesReceived, qint64 bytesTotal);
+    void onUploadError(QNetworkReply::NetworkError code);
+    void onUploadFinished();
+    
+private:
+    bool running;
+    QNetworkAccessManager* manager;
+    UrlStorage storage;
+    std::map<QString, Transfer*> downloads;
+    std::map<QString, Transfer*> uploads;
+    QString currentPath;
+    
+    struct Transfer {
+        std::list<Shared::MessageInfo> messages;
+        qreal progress;
+        QNetworkReply* reply;
+        bool success;
+        QString path;
+        QString url;
+        QFile* file;
+    };
+};
+
+}

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

@@ -0,0 +1,94 @@
+/*
+ * 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 <QDataStream>
+
+#include <list>
+
+#include <storage.h>
+
+#include <shared/messageinfo.h>
+
+namespace Core {
+
+class UrlStorage {
+public:
+    class UrlInfo;
+
+public:
+    UrlStorage(const QString& name);
+    ~UrlStorage();
+    
+    void open();
+    void close();
+    
+    void addFile(const QString& url);
+    void addFile(const QString& url, const QString& path);
+    void addFile(const QString& url, const QString& account, const QString& jid, const QString& id);
+    void addFile(const QString& url, const QString& path, const QString& account, const QString& jid, const QString& id);
+    void addFile(const std::list<Shared::MessageInfo>& msgs, const QString& url, const QString& path);      //this one overwrites all that was
+    std::list<Shared::MessageInfo> removeFile(const QString& url);      //removes entry like it never was in the database, returns affected message infos
+    std::list<Shared::MessageInfo> deletedFile(const QString& path);    //empties the localPath of the entry, returns affected message infos
+    std::list<Shared::MessageInfo> setPath(const QString& url, const QString& path);
+    QString getUrl(const QString& path);
+    QString addMessageAndCheckForPath(const QString& url, const QString& account, const QString& jid, const QString& id);
+    std::pair<QString, std::list<Shared::MessageInfo>> getPath(const QString& url);
+    
+private:
+    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, 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");
+    
+public:
+    class UrlInfo {
+    public:
+        UrlInfo(const QString& path);
+        UrlInfo(const QString& path, const std::list<Shared::MessageInfo>& msgs);
+        UrlInfo();
+        ~UrlInfo();
+        
+        void serialize(QDataStream& data) const;
+        void deserialize(QDataStream& data);
+        
+        QString getPath() const;
+        bool hasPath() const;
+        void setPath(const QString& path);
+        
+        bool addMessage(const QString& acc, const QString& jid, const QString& id);
+        void getMessages(std::list<Shared::MessageInfo>& container) const;
+        
+    private:
+        QString localPath;
+        std::list<Shared::MessageInfo> messages;
+    };
+    
+    
+};
+
+}
+
+QDataStream& operator >> (QDataStream &in, Core::UrlStorage::UrlInfo& info);
+QDataStream& operator << (QDataStream &out, const Core::UrlStorage::UrlInfo& info);

core/conference.cpp

@@ -25,71 +25,65 @@ Core::Conference::Conference(const QString& p_jid, const QString& p_account, boo
     nick(p_nick),
     room(p_room),
     joined(false),
-    autoJoin(p_autoJoin)
+    autoJoin(p_autoJoin),
+    exParticipants()
 {
     muc = true;
     name = p_name;
     
-    connect(room, SIGNAL(joined()), this, SLOT(onRoomJoined()));
-    connect(room, SIGNAL(left()), this, SLOT(onRoomLeft()));
-    connect(room, SIGNAL(nameChanged(const QString&)), this, SLOT(onRoomNameChanged(const QString&)));
-    connect(room, SIGNAL(subjectChanged(const QString&)), this, SLOT(onRoomSubjectChanged(const QString&)));
-    connect(room, SIGNAL(participantAdded(const QString&)), this, SLOT(onRoomParticipantAdded(const QString&)));
-    connect(room, SIGNAL(participantChanged(const QString&)), this, SLOT(onRoomParticipantChanged(const QString&)));
-    connect(room, SIGNAL(participantRemoved(const QString&)), this, SLOT(onRoomParticipantRemoved(const QString&)));
-    connect(room, SIGNAL(nickNameChanged(const QString&)), this, SLOT(onRoomNickNameChanged(const QString&)));
-    connect(room, SIGNAL(error(const QXmppStanza::Error&)), this, SLOT(onRoomError(const QXmppStanza::Error&)));
+    connect(room, &QXmppMucRoom::joined, this, &Conference::onRoomJoined);
+    connect(room, &QXmppMucRoom::left, this, &Conference::onRoomLeft);
+    connect(room, &QXmppMucRoom::nameChanged, this, &Conference::onRoomNameChanged);
+    connect(room, &QXmppMucRoom::subjectChanged, this, &Conference::onRoomSubjectChanged);
+    connect(room, &QXmppMucRoom::participantAdded, this, &Conference::onRoomParticipantAdded);
+    connect(room, &QXmppMucRoom::participantChanged, this, &Conference::onRoomParticipantChanged);
+    connect(room, &QXmppMucRoom::participantRemoved, this, &Conference::onRoomParticipantRemoved);
+    connect(room, &QXmppMucRoom::nickNameChanged, this, &Conference::onRoomNickNameChanged);
+    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);
@@ -100,86 +94,127 @@ 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();
-    if (resource == jid) {
-        qDebug() << "Room" << jid << "is reporting of adding itself to the list participants. Not sure what to do with that yet, skipping";
-    } else {
-        QXmppPresence pres = room->participantPresence(p_name);
+    QXmppPresence pres = room->participantPresence(p_name);
+    QXmppMucItem mi = pres.mucItem();
+    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()) {
-            lastInteraction = QDateTime::currentDateTime();
-        }
-        QXmppMucItem mi = pres.mucItem();
+        if (!lastInteraction.isValid())
+            lastInteraction = QDateTime::currentDateTimeUtc();
         
-        emit addParticipant(resource, {
+        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())
+                )
+            }
+        };
+        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 || !info.autogenerated)
+                setAutoGeneratedAvatar(resource);
+
+            break;
+        case QXmppPresence::VCardUpdateValidPhoto:      //there is a photo, need to load
+            if (hasAvatar) {
+                if (info.autogenerated || info.hash != pres.photoHash())
+                    emit requestVCard(pres.from());
+            } else {
+                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();
-    if (resource == jid) {
-        qDebug() << "Room" << jid << "is reporting of changing his own presence. Not sure what to do with that yet, skipping";
-    } else {
-        QXmppPresence pres = room->participantPresence(p_name);
+    QXmppPresence pres = room->participantPresence(p_name);
+    QXmppMucItem mi = pres.mucItem();
+    handlePresence(pres);
+    if (resource != jid) {
         QDateTime lastInteraction = pres.lastUserInteraction();
-        if (!lastInteraction.isValid()) {
-            lastInteraction = QDateTime::currentDateTime();
-        }
-        QXmppMucItem mi = pres.mucItem();
+        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) {
@@ -189,16 +224,104 @@ 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) {
+    QString id = pres.from();
+    QStringList comps = id.split("/");
+    QString jid = comps.front();
+    QString resource("");
+    if (comps.size() > 1)
+        resource = comps.back();
+
+    Archive::AvatarInfo info;
+    bool hasAvatar = readAvatarInfo(info, resource);
+    handlePossibleAvatarUpdate(pres, resource, hasAvatar, info);
+}
+
+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())
+            exParticipants.insert(std::make_pair(resource, newInfo));
+        else
+            itr->second = newInfo;
+
+        emit changeParticipant(resource, {
+            {"avatarState", static_cast<uint>(Shared::Avatar::autocreated)},
+            {"avatarPath", avatarPath(resource) + "." + newInfo.type}
+        });
+    }
+    
+    return result;
+}
+
+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())
+                exParticipants.insert(std::make_pair(resource, info));
+            else
+                itr->second = info;
+            
+            emit changeParticipant(resource, {
+                {"avatarState", static_cast<uint>(Shared::Avatar::autocreated)},
+                {"avatarPath", avatarPath(resource) + "." + info.type}
+            });
+        } else {
+            std::map<QString, Archive::AvatarInfo>::iterator itr = exParticipants.find(resource);
+            if (itr != exParticipants.end())
+                exParticipants.erase(itr);
+            
+            emit changeParticipant(resource, {
+                {"avatarState", static_cast<uint>(Shared::Avatar::empty)},
+                {"avatarPath", ""}
+            });
+        }
+        
+    }
+    
+    return result;
+}
+
+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>(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::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

@@ -16,20 +16,20 @@
  * along with this program.  If not, see <http://www.gnu.org/licenses/>.
  */
 
-#ifndef CORE_CONFERENCE_H
-#define CORE_CONFERENCE_H
+#pragma once
+
+#include <QDir>
 
-#include "rosteritem.h"
 #include <QXmppMucManager.h>
 
-namespace Core
-{
+#include <set>
 
-/**
- * @todo write docs
- */
-class Conference : public RosterItem
-{
+#include "rosteritem.h"
+#include <shared/global.h>
+#include <shared/clientid.h>
+
+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);
@@ -42,8 +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;
+    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);
@@ -54,11 +59,24 @@ signals:
     void changeParticipant(const QString& name, const QMap<QString, QVariant>& data);
     void removeParticipant(const QString& name);
     
+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;
     bool joined;
     bool autoJoin;
+    std::map<QString, Archive::AvatarInfo> exParticipants;
+    static const std::set<QString> supportedList;
     
 private slots:
     void onRoomJoined();
@@ -74,5 +92,3 @@ private slots:
 };
 
 }
-
-#endif // CORE_CONFERENCE_H

core/contact.cpp

@@ -22,49 +22,92 @@
 Core::Contact::Contact(const QString& pJid, const QString& account, QObject* parent):
     RosterItem(pJid, account, parent),
     groups(),
-    subscriptionState(Shared::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 (QSet<QString>::iterator itr = toAdd.begin(), end = toAdd.end(); itr != end; ++itr) {
-        emit groupAdded(*itr);
-    }
+    for (const QString& group : toAdd)
+        emit groupAdded(group);
 }
 
-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) {
+    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);
+            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())
+                    emit requestVCard(jid);
+            } else {
+                emit requestVCard(jid);
+            }
+            break;
+        }      
+    }
+}
+
+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);
@@ -38,6 +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);
@@ -47,7 +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

@@ -0,0 +1,22 @@
+set(SOURCE_FILES
+  messagehandler.cpp
+  rosterhandler.cpp
+  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