tdesktop/Telegram/SourceFiles/application.cpp

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/*
This file is part of Telegram Desktop,
the official desktop application for the Telegram messaging service.
For license and copyright information please follow this link:
https://github.com/telegramdesktop/tdesktop/blob/master/LEGAL
*/
#include "application.h"
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#include "platform/platform_specific.h"
#include "mainwidget.h"
#include "mainwindow.h"
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#include "storage/localstorage.h"
#include "window/notifications_manager.h"
#include "core/crash_reports.h"
#include "messenger.h"
#include "base/timer.h"
#include "base/concurrent_timer.h"
#include "base/qthelp_url.h"
#include "base/qthelp_regex.h"
#include "core/update_checker.h"
#include "core/crash_report_window.h"
namespace {
constexpr auto kEmptyPidForCommandResponse = 0ULL;
QChar _toHex(ushort v) {
v = v & 0x000F;
return QChar::fromLatin1((v >= 10) ? ('a' + (v - 10)) : ('0' + v));
}
ushort _fromHex(QChar c) {
return ((c.unicode() >= uchar('a')) ? (c.unicode() - uchar('a') + 10) : (c.unicode() - uchar('0'))) & 0x000F;
}
QString _escapeTo7bit(const QString &str) {
QString result;
result.reserve(str.size() * 2);
for (int i = 0, l = str.size(); i != l; ++i) {
QChar ch(str.at(i));
ushort uch(ch.unicode());
if (uch < 32 || uch > 127 || uch == ushort(uchar('%'))) {
result.append('%').append(_toHex(uch >> 12)).append(_toHex(uch >> 8)).append(_toHex(uch >> 4)).append(_toHex(uch));
} else {
result.append(ch);
}
}
return result;
}
QString _escapeFrom7bit(const QString &str) {
QString result;
result.reserve(str.size());
for (int i = 0, l = str.size(); i != l; ++i) {
QChar ch(str.at(i));
if (ch == QChar::fromLatin1('%') && i + 4 < l) {
result.append(QChar(ushort((_fromHex(str.at(i + 1)) << 12) | (_fromHex(str.at(i + 2)) << 8) | (_fromHex(str.at(i + 3)) << 4) | _fromHex(str.at(i + 4)))));
i += 4;
} else {
result.append(ch);
}
}
return result;
}
} // namespace
bool InternalPassportLink(const QString &url) {
const auto urlTrimmed = url.trimmed();
if (!urlTrimmed.startsWith(qstr("tg://"), Qt::CaseInsensitive)) {
return false;
}
const auto command = urlTrimmed.midRef(qstr("tg://").size());
using namespace qthelp;
const auto matchOptions = RegExOption::CaseInsensitive;
const auto authMatch = regex_match(
qsl("^passport/?\\?(.+)(#|$)"),
command,
matchOptions);
const auto usernameMatch = regex_match(
qsl("^resolve/?\\?(.+)(#|$)"),
command,
matchOptions);
const auto usernameValue = usernameMatch->hasMatch()
? url_parse_params(
usernameMatch->captured(1),
UrlParamNameTransform::ToLower).value(qsl("domain"))
: QString();
const auto authLegacy = (usernameValue == qstr("telegrampassport"));
return authMatch->hasMatch() || authLegacy;
}
bool StartUrlRequiresActivate(const QString &url) {
return Messenger::Instance().locked()
? true
: !InternalPassportLink(url);
}
Application::Application(
not_null<Core::Launcher*> launcher,
int &argc,
char **argv)
: QApplication(argc, argv)
, _launcher(launcher)
, _updateChecker(Core::UpdaterDisabled()
? nullptr
: std::make_unique<Core::UpdateChecker>()) {
const auto d = QFile::encodeName(QDir(cWorkingDir()).absolutePath());
char h[33] = { 0 };
hashMd5Hex(d.constData(), d.size(), h);
#ifndef OS_MAC_STORE
_localServerName = psServerPrefix() + h + '-' + cGUIDStr();
#else // OS_MAC_STORE
h[4] = 0; // use only first 4 chars
_localServerName = psServerPrefix() + h;
#endif // OS_MAC_STORE
connect(&_localSocket, SIGNAL(connected()), this, SLOT(socketConnected()));
connect(&_localSocket, SIGNAL(disconnected()), this, SLOT(socketDisconnected()));
connect(&_localSocket, SIGNAL(error(QLocalSocket::LocalSocketError)), this, SLOT(socketError(QLocalSocket::LocalSocketError)));
connect(&_localSocket, SIGNAL(bytesWritten(qint64)), this, SLOT(socketWritten(qint64)));
connect(&_localSocket, SIGNAL(readyRead()), this, SLOT(socketReading()));
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connect(&_localServer, SIGNAL(newConnection()), this, SLOT(newInstanceConnected()));
QTimer::singleShot(0, this, SLOT(startApplication()));
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connect(this, SIGNAL(aboutToQuit()), this, SLOT(closeApplication()));
if (cManyInstance()) {
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LOG(("Many instance allowed, starting..."));
singleInstanceChecked();
} else {
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LOG(("Connecting local socket to %1...").arg(_localServerName));
_localSocket.connectToServer(_localServerName);
}
}
Application::~Application() = default;
bool Application::event(QEvent *e) {
if (e->type() == QEvent::Close) {
App::quit();
}
return QApplication::event(e);
}
void Application::socketConnected() {
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LOG(("Socket connected, this is not the first application instance, sending show command..."));
_secondInstance = true;
QString commands;
const QStringList &lst(cSendPaths());
for (QStringList::const_iterator i = lst.cbegin(), e = lst.cend(); i != e; ++i) {
commands += qsl("SEND:") + _escapeTo7bit(*i) + ';';
}
if (!cStartUrl().isEmpty()) {
commands += qsl("OPEN:") + _escapeTo7bit(cStartUrl()) + ';';
} else {
commands += qsl("CMD:show;");
}
DEBUG_LOG(("Application Info: writing commands %1").arg(commands));
_localSocket.write(commands.toLatin1());
}
void Application::socketWritten(qint64/* bytes*/) {
if (_localSocket.state() != QLocalSocket::ConnectedState) {
LOG(("Socket is not connected %1").arg(_localSocket.state()));
return;
}
if (_localSocket.bytesToWrite()) {
return;
}
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LOG(("Show command written, waiting response..."));
}
void Application::socketReading() {
if (_localSocket.state() != QLocalSocket::ConnectedState) {
LOG(("Socket is not connected %1").arg(_localSocket.state()));
return;
}
_localSocketReadData.append(_localSocket.readAll());
if (QRegularExpression("RES:(\\d+);").match(_localSocketReadData).hasMatch()) {
uint64 pid = _localSocketReadData.mid(4, _localSocketReadData.length() - 5).toULongLong();
if (pid != kEmptyPidForCommandResponse) {
psActivateProcess(pid);
}
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LOG(("Show command response received, pid = %1, activating and quitting...").arg(pid));
return App::quit();
}
}
void Application::socketError(QLocalSocket::LocalSocketError e) {
if (App::quitting()) return;
if (_secondInstance) {
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LOG(("Could not write show command, error %1, quitting...").arg(e));
return App::quit();
}
if (e == QLocalSocket::ServerNotFoundError) {
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LOG(("This is the only instance of Telegram, starting server and app..."));
} else {
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LOG(("Socket connect error %1, starting server and app...").arg(e));
}
_localSocket.close();
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// Local server does not work in WinRT build.
#ifndef Q_OS_WINRT
psCheckLocalSocket(_localServerName);
if (!_localServer.listen(_localServerName)) {
LOG(("Failed to start listening to %1 server, error %2").arg(_localServerName).arg(int(_localServer.serverError())));
return App::quit();
}
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#endif // !Q_OS_WINRT
if (!Core::UpdaterDisabled()
&& !cNoStartUpdate()
&& Core::checkReadyUpdate()) {
cSetRestartingUpdate(true);
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DEBUG_LOG(("Application Info: installing update instead of starting app..."));
return App::quit();
}
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singleInstanceChecked();
}
void Application::singleInstanceChecked() {
if (cManyInstance()) {
Logs::multipleInstances();
}
Sandbox::start();
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refreshGlobalProxy();
if (!Logs::started() || (!cManyInstance() && !Logs::instanceChecked())) {
new NotStartedWindow();
} else {
const auto status = CrashReports::Start();
if (status == CrashReports::CantOpen) {
new NotStartedWindow();
} else if (status == CrashReports::LastCrashed) {
if (Sandbox::LastCrashDump().isEmpty()) { // don't handle bad closing for now
if (CrashReports::Restart() == CrashReports::CantOpen) {
new NotStartedWindow();
} else {
Sandbox::launch();
}
} else {
new LastCrashedWindow();
}
} else {
Sandbox::launch();
}
}
}
void Application::socketDisconnected() {
if (_secondInstance) {
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DEBUG_LOG(("Application Error: socket disconnected before command response received, quitting..."));
return App::quit();
}
}
void Application::newInstanceConnected() {
DEBUG_LOG(("Application Info: new local socket connected"));
for (QLocalSocket *client = _localServer.nextPendingConnection(); client; client = _localServer.nextPendingConnection()) {
_localClients.push_back(LocalClient(client, QByteArray()));
connect(client, SIGNAL(readyRead()), this, SLOT(readClients()));
connect(client, SIGNAL(disconnected()), this, SLOT(removeClients()));
}
}
void Application::readClients() {
// This method can be called before Messenger is constructed.
QString startUrl;
QStringList toSend;
for (LocalClients::iterator i = _localClients.begin(), e = _localClients.end(); i != e; ++i) {
i->second.append(i->first->readAll());
if (i->second.size()) {
QString cmds(QString::fromLatin1(i->second));
int32 from = 0, l = cmds.length();
for (int32 to = cmds.indexOf(QChar(';'), from); to >= from; to = (from < l) ? cmds.indexOf(QChar(';'), from) : -1) {
QStringRef cmd(&cmds, from, to - from);
if (cmd.startsWith(qsl("CMD:"))) {
Sandbox::execExternal(cmds.mid(from + 4, to - from - 4));
const auto response = qsl("RES:%1;").arg(QCoreApplication::applicationPid()).toLatin1();
i->first->write(response.data(), response.size());
} else if (cmd.startsWith(qsl("SEND:"))) {
if (cSendPaths().isEmpty()) {
toSend.append(_escapeFrom7bit(cmds.mid(from + 5, to - from - 5)));
}
} else if (cmd.startsWith(qsl("OPEN:"))) {
auto activateRequired = true;
if (cStartUrl().isEmpty()) {
startUrl = _escapeFrom7bit(cmds.mid(from + 5, to - from - 5)).mid(0, 8192);
activateRequired = StartUrlRequiresActivate(startUrl);
}
if (activateRequired) {
Sandbox::execExternal("show");
}
const auto responsePid = activateRequired
? QCoreApplication::applicationPid()
: kEmptyPidForCommandResponse;
const auto response = qsl("RES:%1;").arg(responsePid).toLatin1();
i->first->write(response.data(), response.size());
} else {
LOG(("Application Error: unknown command %1 passed in local socket").arg(QString(cmd.constData(), cmd.length())));
}
from = to + 1;
}
if (from > 0) {
i->second = i->second.mid(from);
}
}
}
if (!toSend.isEmpty()) {
QStringList paths(cSendPaths());
paths.append(toSend);
cSetSendPaths(paths);
}
if (!cSendPaths().isEmpty()) {
if (App::wnd()) {
App::wnd()->sendPaths();
}
}
if (!startUrl.isEmpty()) {
cSetStartUrl(startUrl);
}
if (auto messenger = Messenger::InstancePointer()) {
messenger->checkStartUrl();
}
}
void Application::removeClients() {
DEBUG_LOG(("Application Info: remove clients slot called, clients %1").arg(_localClients.size()));
for (LocalClients::iterator i = _localClients.begin(), e = _localClients.end(); i != e;) {
if (i->first->state() != QLocalSocket::ConnectedState) {
DEBUG_LOG(("Application Info: removing client"));
i = _localClients.erase(i);
e = _localClients.end();
} else {
++i;
}
}
}
void Application::startApplication() {
if (App::quitting()) {
quit();
}
}
void Application::createMessenger() {
Expects(!App::quitting());
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_messengerInstance = std::make_unique<Messenger>(_launcher);
}
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void Application::refreshGlobalProxy() {
#ifndef TDESKTOP_DISABLE_NETWORK_PROXY
const auto proxy = [&] {
if (Global::started()) {
return Global::UseProxy()
? Global::SelectedProxy()
: ProxyData();
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}
return Sandbox::PreLaunchProxy();
}();
if (proxy.type == ProxyData::Type::Socks5
|| proxy.type == ProxyData::Type::Http) {
QNetworkProxy::setApplicationProxy(
ToNetworkProxy(ToDirectIpProxy(proxy)));
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} else {
QNetworkProxyFactory::setUseSystemConfiguration(true);
}
#endif // TDESKTOP_DISABLE_NETWORK_PROXY
}
void Application::closeApplication() {
if (App::launchState() == App::QuitProcessed) return;
App::setLaunchState(App::QuitProcessed);
_messengerInstance.reset();
Sandbox::finish();
_localServer.close();
for (LocalClients::iterator i = _localClients.begin(), e = _localClients.end(); i != e; ++i) {
disconnect(i->first, SIGNAL(disconnected()), this, SLOT(removeClients()));
i->first->close();
}
_localClients.clear();
_localSocket.close();
_updateChecker = nullptr;
}
inline Application *application() {
return qobject_cast<Application*>(QApplication::instance());
}
namespace Sandbox {
QRect availableGeometry() {
if (auto a = application()) {
return a->desktop()->availableGeometry();
}
return QDesktopWidget().availableGeometry();
}
QRect screenGeometry(const QPoint &p) {
if (auto a = application()) {
return a->desktop()->screenGeometry(p);
}
return QDesktopWidget().screenGeometry(p);
}
void setActiveWindow(QWidget *window) {
if (auto a = application()) {
a->setActiveWindow(window);
}
}
bool isSavingSession() {
if (auto a = application()) {
return a->isSavingSession();
}
return false;
}
void execExternal(const QString &cmd) {
DEBUG_LOG(("Application Info: executing external command '%1'").arg(cmd));
if (cmd == "show") {
if (App::wnd()) {
App::wnd()->activate();
} else if (PreLaunchWindow::instance()) {
PreLaunchWindow::instance()->activate();
}
}
}
void adjustSingleTimers() {
if (auto a = application()) {
a->adjustSingleTimers();
}
base::Timer::Adjust();
base::ConcurrentTimerEnvironment::Adjust();
}
void connect(const char *signal, QObject *object, const char *method) {
if (auto a = application()) {
a->connect(a, signal, object, method);
}
}
void launch() {
Assert(application() != 0);
const auto dpi = Application::primaryScreen()->logicalDotsPerInch();
LOG(("Primary screen DPI: %1").arg(dpi));
if (dpi <= 108) {
cSetScreenScale(100); // 100%: 96 DPI (0-108)
} else if (dpi <= 132) {
cSetScreenScale(125); // 125%: 120 DPI (108-132)
} else if (dpi <= 168) {
cSetScreenScale(150); // 150%: 144 DPI (132-168)
} else if (dpi <= 216) {
cSetScreenScale(200); // 200%: 192 DPI (168-216)
} else if (dpi <= 264) {
cSetScreenScale(250); // 250%: 240 DPI (216-264)
} else {
cSetScreenScale(300); // 300%: 288 DPI (264-inf)
}
auto devicePixelRatio = application()->devicePixelRatio();
if (devicePixelRatio > 1.) {
if ((cPlatform() != dbipMac && cPlatform() != dbipMacOld) || (devicePixelRatio != 2.)) {
LOG(("Found non-trivial Device Pixel Ratio: %1").arg(devicePixelRatio));
LOG(("Environmental variables: QT_DEVICE_PIXEL_RATIO='%1'").arg(QString::fromLatin1(qgetenv("QT_DEVICE_PIXEL_RATIO"))));
LOG(("Environmental variables: QT_SCALE_FACTOR='%1'").arg(QString::fromLatin1(qgetenv("QT_SCALE_FACTOR"))));
LOG(("Environmental variables: QT_AUTO_SCREEN_SCALE_FACTOR='%1'").arg(QString::fromLatin1(qgetenv("QT_AUTO_SCREEN_SCALE_FACTOR"))));
LOG(("Environmental variables: QT_SCREEN_SCALE_FACTORS='%1'").arg(QString::fromLatin1(qgetenv("QT_SCREEN_SCALE_FACTORS"))));
}
cSetRetinaFactor(devicePixelRatio);
cSetIntRetinaFactor(int32(cRetinaFactor()));
cSetScreenScale(kInterfaceScaleDefault);
}
application()->createMessenger();
}
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void refreshGlobalProxy() {
if (const auto instance = application()) {
instance->refreshGlobalProxy();
}
}
} // namespace Sandbox