squawk/core/passwordStorageEngines/kwallet.cpp

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/*
* 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 "kwallet.h"
Core::PSE::KWallet::OpenWallet Core::PSE::KWallet::openWallet = 0;
Core::PSE::KWallet::NetworkWallet Core::PSE::KWallet::networkWallet = 0;
Core::PSE::KWallet::DeleteWallet Core::PSE::KWallet::deleteWallet = 0;
Core::PSE::KWallet::ReadPassword Core::PSE::KWallet::readPassword = 0;
Core::PSE::KWallet::WritePassword Core::PSE::KWallet::writePassword = 0;
Core::PSE::KWallet::HasFolder Core::PSE::KWallet::hasFolder = 0;
Core::PSE::KWallet::CreateFolder Core::PSE::KWallet::createFolder = 0;
Core::PSE::KWallet::SetFolder Core::PSE::KWallet::setFolder = 0;
Core::PSE::KWallet::SupportState Core::PSE::KWallet::sState = Core::PSE::KWallet::initial;
QLibrary Core::PSE::KWallet::lib("kwalletWrapper");
Core::PSE::KWallet::KWallet():
QObject(),
cState(disconnected),
everError(false),
wallet(0),
readRequest(),
writeRequest()
{
if (sState == initial) {
lib.load();
if (!lib.isLoaded()) { //fallback from the build directory
lib.setFileName("./core/passwordStorageEngines/libkwalletWrapper.so");
lib.load();
}
if (lib.isLoaded()) {
openWallet = (OpenWallet) lib.resolve("openWallet");
networkWallet = (NetworkWallet) lib.resolve("networkWallet");
deleteWallet = (DeleteWallet) lib.resolve("deleteWallet");
readPassword = (ReadPassword) lib.resolve("readPassword");
writePassword = (WritePassword) lib.resolve("writePassword");
hasFolder = (HasFolder) lib.resolve("hasFolder");
createFolder = (CreateFolder) lib.resolve("createFolder");
setFolder = (SetFolder) lib.resolve("setFolder");
if (openWallet
&& networkWallet
&& deleteWallet
&& readPassword
&& writePassword
) {
sState = success;
} else {
sState = failure;
}
} else {
sState = failure;
}
}
}
Core::PSE::KWallet::~KWallet()
{
close();
}
void Core::PSE::KWallet::open()
{
if (sState == success) {
if (cState == disconnected) {
wallet = openWallet(networkWallet(), 0, ::KWallet::Wallet::Asynchronous);
if (wallet) {
cState = connecting;
connect(wallet, SIGNAL(walletOpened(bool)), this, SLOT(onWalletOpened(bool)));
connect(wallet, SIGNAL(walletClosed()), this, SLOT(onWalletClosed()));
} else {
everError = true;
emit opened(false);
}
}
}
}
Core::PSE::KWallet::ConnectionState Core::PSE::KWallet::connectionState()
{
return cState;
}
void Core::PSE::KWallet::close()
{
if (sState == success) {
if (cState != disconnected) {
deleteWallet(wallet);
wallet = 0;
}
rejectPending();
}
}
void Core::PSE::KWallet::onWalletClosed()
{
cState = disconnected;
deleteWallet(wallet);
wallet = 0;
emit closed();
rejectPending();
}
void Core::PSE::KWallet::onWalletOpened(bool success)
{
emit opened(success);
if (success) {
QString appName = QCoreApplication::applicationName();
if (!hasFolder(wallet, appName)) {
createFolder(wallet, appName);
}
setFolder(wallet, appName);
cState = connected;
readPending();
} else {
everError = true;
cState = disconnected;
deleteWallet(wallet);
wallet = 0;
rejectPending();
}
}
Core::PSE::KWallet::SupportState Core::PSE::KWallet::supportState()
{
return sState;
}
bool Core::PSE::KWallet::everHadError() const
{
return everError;
}
void Core::PSE::KWallet::resetEverHadError()
{
everError = false;
}
void Core::PSE::KWallet::requestReadPassword(const QString& login, bool askAgain)
{
if (sState == success) {
readRequest.insert(login);
readSwitch(askAgain);
}
}
void Core::PSE::KWallet::requestWritePassword(const QString& login, const QString& password, bool askAgain)
{
if (sState == success) {
std::map<QString, QString>::iterator itr = writeRequest.find(login);
if (itr == writeRequest.end()) {
writeRequest.insert(std::make_pair(login, password));
} else {
itr->second = password;
}
readSwitch(askAgain);
}
}
void Core::PSE::KWallet::readSwitch(bool askAgain)
{
switch (cState) {
case connected:
readPending();
break;
case connecting:
break;
case disconnected:
if (!everError || askAgain) {
open();
}
break;
}
}
void Core::PSE::KWallet::rejectPending()
{
writeRequest.clear();
std::set<QString>::const_iterator i = readRequest.begin();
while (i != readRequest.end()) {
emit rejectPassword(*i);
readRequest.erase(i);
i = readRequest.begin();
}
}
void Core::PSE::KWallet::readPending()
{
std::map<QString, QString>::const_iterator itr = writeRequest.begin();
while (itr != writeRequest.end()) {
int result = writePassword(wallet, itr->first, itr->second);
if (result == 0) {
qDebug() << "Successfully saved password for user" << itr->first;
} else {
qDebug() << "Error writing password for user" << itr->first << ":" << result;
}
writeRequest.erase(itr);
itr = writeRequest.begin();
}
std::set<QString>::const_iterator i = readRequest.begin();
while (i != readRequest.end()) {
QString password;
int result = readPassword(wallet, *i, password);
if (result == 0 && password.size() > 0) { //even though it's written that the error is supposed to be returned in case there were no password
emit responsePassword(*i, password); //it doesn't do so. I assume empty password as a lack of password in KWallet
} else {
emit rejectPassword(*i);
}
readRequest.erase(i);
i = readRequest.begin();
}
}