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// Copyright 2005-2019 The Mumble Developers. All rights reserved.
// Use of this source code is governed by a BSD-style license
// that can be found in the LICENSE file at the root of the
// Mumble source tree or at <https://www.mumble.info/LICENSE>.
#include "Overlay.h"
#include "OverlayClient.h"
#include "Channel.h"
#include "ClientUser.h"
#include "Database.h"
#include "GlobalShortcut.h"
#include "MainWindow.h"
#include "Message.h"
#include "OverlayText.h"
#include "RichTextEditor.h"
#include "ServerHandler.h"
#include "User.h"
#include "WebFetch.h"
// We define a global macro called 'g'. This can lead to issues when included code uses 'g' as a type or parameter name (like protobuf 3.7 does). As such, for now, we have to make this our last include.
#include "Global.h"
QString OverlayAppInfo::applicationIdentifierForPath(const QString &path) {
#ifdef Q_OS_MAC
QString qsIdentifier;
CFDictionaryRef plist = NULL;
CFDataRef data = NULL;
QFile qfAppBundle(QString::fromLatin1("%1/Contents/Info.plist").arg(path));
if (qfAppBundle.exists()) {
qfAppBundle.open(QIODevice::ReadOnly);
QByteArray qbaPlistData = qfAppBundle.readAll();
data = CFDataCreateWithBytesNoCopy(NULL, reinterpret_cast<UInt8 *>(qbaPlistData.data()), qbaPlistData.count(), kCFAllocatorNull);
plist = static_cast<CFDictionaryRef>(CFPropertyListCreateFromXMLData(NULL, data, kCFPropertyListImmutable, NULL));
if (plist) {
CFStringRef ident = static_cast<CFStringRef>(CFDictionaryGetValue(plist, CFSTR("CFBundleIdentifier")));
if (ident) {
char buf[4096];
CFStringGetCString(ident, buf, 4096, kCFStringEncodingUTF8);
qsIdentifier = QString::fromUtf8(buf);
}
}
}
if (data) {
CFRelease(data);
}
if (plist) {
CFRelease(plist);
}
return qsIdentifier;
#else
return QDir::toNativeSeparators(path);
#endif
}
OverlayAppInfo OverlayAppInfo::applicationInfoForId(const QString &identifier) {
QString qsAppName(identifier);
QIcon qiAppIcon;
#if defined(Q_OS_MAC)
CFStringRef bundleId = NULL;
CFURLRef bundleUrl = NULL;
CFBundleRef bundle = NULL;
OSStatus err = noErr;
char buf[4096];
bundleId = CFStringCreateWithCharacters(kCFAllocatorDefault, reinterpret_cast<const UniChar *>(identifier.unicode()), identifier.length());
err = LSFindApplicationForInfo(kLSUnknownCreator, bundleId, NULL, NULL, &bundleUrl);
if (err == noErr) {
// Figure out the bundle name of the application.
CFStringRef absBundlePath = CFURLCopyFileSystemPath(bundleUrl, kCFURLPOSIXPathStyle);
CFStringGetCString(absBundlePath, buf, 4096, kCFStringEncodingUTF8);
QString qsBundlePath = QString::fromUtf8(buf);
CFRelease(absBundlePath);
qsAppName = QFileInfo(qsBundlePath).bundleName();
// Load the bundle's icon.
bundle = CFBundleCreate(NULL, bundleUrl);
if (bundle) {
CFDictionaryRef info = CFBundleGetInfoDictionary(bundle);
if (info) {
CFStringRef iconFileName = reinterpret_cast<CFStringRef>(CFDictionaryGetValue(info, CFSTR("CFBundleIconFile")));
if (iconFileName) {
CFStringGetCString(iconFileName, buf, 4096, kCFStringEncodingUTF8);
QString qsIconPath = QString::fromLatin1("%1/Contents/Resources/%2")
.arg(qsBundlePath, QString::fromUtf8(buf));
if (! QFile::exists(qsIconPath)) {
qsIconPath += QString::fromLatin1(".icns");
}
if (QFile::exists(qsIconPath)) {
qiAppIcon = QIcon(qsIconPath);
}
}
}
}
}
if (bundleId) {
CFRelease(bundleId);
}
if (bundleUrl) {
CFRelease(bundleUrl);
}
if (bundle) {
CFRelease(bundle);
}
#elif defined(Q_OS_WIN)
// qWinAppInst(), whose return value we used to pass
// to ExtractIcon below, was removed in Qt 5.8.
//
// It was removed via
// https://github.com/qt/qtbase/commit/64507c7165e42c2a5029353d8f97a0d841fa6b01
//
// In both Qt 4 and Qt 5, the qWinAppInst() implementation
// simply calls GetModuleHandle(0).
//
// To sidestep the removal of the function, we simply
// call through to GetModuleHandle() directly.
HINSTANCE qWinAppInstValue = GetModuleHandle(NULL);
HICON icon = ExtractIcon(qWinAppInstValue, identifier.toStdWString().c_str(), 0);
if (icon) {
#if QT_VERSION >= 0x050000
extern QPixmap qt_pixmapFromWinHICON(HICON icon);
qiAppIcon = QIcon(qt_pixmapFromWinHICON(icon));
#else
qiAppIcon = QIcon(QPixmap::fromWinHICON(icon));
#endif
DestroyIcon(icon);
}
#endif
return OverlayAppInfo(qsAppName, qiAppIcon);
}
OverlayAppInfo::OverlayAppInfo(QString name, QIcon icon) {
qsDisplayName = name;
qiIcon = icon;
}
OverlayMouse::OverlayMouse(QGraphicsItem *p) : QGraphicsPixmapItem(p) {
}
bool OverlayMouse::contains(const QPointF &) const {
return false;
}
bool OverlayMouse::collidesWithPath(const QPainterPath &, Qt::ItemSelectionMode) const {
return false;
}
OverlayGroup::OverlayGroup() : QGraphicsItem() {
}
int OverlayGroup::type() const {
return Type;
}
void OverlayGroup::paint(QPainter *, const QStyleOptionGraphicsItem *, QWidget *) {
}
QRectF OverlayGroup::boundingRect() const {
QRectF qr;
foreach(const QGraphicsItem *item, childItems())
if (item->isVisible())
qr |= item->boundingRect().translated(item->pos());
return qr;
}
Overlay::Overlay() : QObject() {
d = NULL;
platformInit();
forceSettings();
qlsServer = new QLocalServer(this);
QString pipepath;
#ifdef Q_OS_WIN
pipepath = QLatin1String("MumbleOverlayPipe");
#else
{
QString xdgRuntimePath = QProcessEnvironment::systemEnvironment().value(QLatin1String("XDG_RUNTIME_DIR"));
QDir xdgRuntimeDir = QDir(xdgRuntimePath);
if (! xdgRuntimePath.isNull() && xdgRuntimeDir.exists()) {
pipepath = xdgRuntimeDir.absoluteFilePath(QLatin1String("MumbleOverlayPipe"));
} else {
pipepath = QDir::home().absoluteFilePath(QLatin1String(".MumbleOverlayPipe"));
}
}
{
QFile f(pipepath);
if (f.exists()) {
qWarning() << "Overlay: Removing old socket on" << pipepath;
f.remove();
}
}
#endif
if (! qlsServer->listen(pipepath)) {
QMessageBox::warning(NULL, QLatin1String("Mumble"), tr("Failed to create communication with overlay at %2: %1. No overlay will be available.").arg(Qt::escape(qlsServer->errorString()), Qt::escape(pipepath)), QMessageBox::Ok, QMessageBox::NoButton);
} else {
qWarning() << "Overlay: Listening on" << qlsServer->fullServerName();
connect(qlsServer, SIGNAL(newConnection()), this, SLOT(newConnection()));
}
QMetaObject::connectSlotsByName(this);
}
Overlay::~Overlay() {
setActive(false);
delete d;
// Need to be deleted first, since destructor references lingering QLocalSockets
foreach(OverlayClient *oc, qlClients)
{
// As we're the one closing the connection, we do not need to be
// notified of disconnects. This is important because on disconnect we
// also remove (and 'delete') the overlay client.
disconnect(oc->qlsSocket, SIGNAL(disconnected()), this, SLOT(disconnected()));
disconnect(oc->qlsSocket, SIGNAL(error(QLocalSocket::LocalSocketError)), this, SLOT(error(QLocalSocket::LocalSocketError)));
delete oc;
}
}
void Overlay::newConnection() {
while (true) {
QLocalSocket *qls = qlsServer->nextPendingConnection();
if (! qls)
break;
OverlayClient *oc = new OverlayClient(qls, this);
qlClients << oc;
connect(qls, SIGNAL(disconnected()), this, SLOT(disconnected()));
connect(qls, SIGNAL(error(QLocalSocket::LocalSocketError)), this, SLOT(error(QLocalSocket::LocalSocketError)));
}
}
void Overlay::disconnected() {
QLocalSocket *qls = qobject_cast<QLocalSocket *>(sender());
foreach(OverlayClient *oc, qlClients) {
if (oc->qlsSocket == qls) {
qlClients.removeAll(oc);
delete oc;
return;
}
}
}
void Overlay::error(QLocalSocket::LocalSocketError) {
disconnected();
}
bool Overlay::isActive() const {
return ! qlClients.isEmpty();
}
void Overlay::toggleShow() {
if (g.ocIntercept) {
g.ocIntercept->hideGui();
} else {
foreach(OverlayClient *oc, qlClients) {
if (oc->uiPid) {
#if defined(Q_OS_WIN)
HWND hwnd = GetForegroundWindow();
DWORD pid = 0;
GetWindowThreadProcessId(hwnd, &pid);
if (pid != oc->uiPid)
continue;
#elif defined(Q_OS_MAC)
pid_t pid = 0;
ProcessSerialNumber psn;
GetFrontProcess(&psn);
GetProcessPID(&psn, &pid);
if (static_cast<quint64>(pid) != oc->uiPid)
continue;
#if 0
// Fullscreen only.
if (! CGDisplayIsCaptured(CGMainDisplayID()))
continue;
#endif
#endif
oc->showGui();
return;
}
}
}
}
void Overlay::forceSettings() {
foreach(OverlayClient *oc, qlClients) {
oc->reset();
}
updateOverlay();
}
void Overlay::verifyTexture(ClientUser *cp, bool allowupdate) {
qsQueried.remove(cp->uiSession);
ClientUser *self = ClientUser::get(g.uiSession);
allowupdate = allowupdate && self && self->cChannel->isLinked(cp->cChannel);
if (allowupdate && ! cp->qbaTextureHash.isEmpty() && cp->qbaTexture.isEmpty())
cp->qbaTexture = g.db->blob(cp->qbaTextureHash);
if (! cp->qbaTexture.isEmpty()) {
bool valid = true;
if (cp->qbaTexture.length() < static_cast<int>(sizeof(unsigned int))) {
valid = false;
} else if (qFromBigEndian<unsigned int>(reinterpret_cast<const unsigned char *>(cp->qbaTexture.constData())) == 600 * 60 * 4) {
QByteArray qba = qUncompress(cp->qbaTexture);
if (qba.length() != 600 * 60 * 4) {
valid = false;
} else {
int width = 0;
int height = 0;
const unsigned int *ptr = reinterpret_cast<const unsigned int *>(qba.constData());
// If we have an alpha only part on the right side of the image ignore it
for (int y=0;y<60;++y) {
for (int x=0;x<600; ++x) {
if (ptr[y*600+x] & 0xff000000) {
if (x > width)
width = x;
if (y > height)
height = y;
}
}
}
// Full size image? More likely image without alpha; fix it.
if ((width == 599) && (height == 59)) {
width = 0;
height = 0;
for (int y=0;y<60;++y) {
for (int x=0;x<600; ++x) {
if (ptr[y*600+x] & 0x00ffffff) {
if (x > width)
width = x;
if (y > height)
height = y;
}
}
}
}
if (! width || ! height) {
valid = false;
} else {
QImage img = QImage(width+1, height+1, QImage::Format_ARGB32);
{
QImage srcimg(reinterpret_cast<const uchar *>(qba.constData()), 600, 60, QImage::Format_ARGB32);
QPainter imgp(&img);
img.fill(0);
imgp.setRenderHint(QPainter::Antialiasing);
imgp.setRenderHint(QPainter::TextAntialiasing);
imgp.setBackground(QColor(0,0,0,0));
imgp.setCompositionMode(QPainter::CompositionMode_Source);
imgp.drawImage(0, 0, srcimg);
}
cp->qbaTexture = QByteArray();
QBuffer qb(& cp->qbaTexture);
qb.open(QIODevice::WriteOnly);
QImageWriter qiw(&qb, "png");
qiw.write(img);
cp->qbaTextureFormat = QString::fromLatin1("png").toUtf8();
}
}
} else {
QBuffer qb(& cp->qbaTexture);
qb.open(QIODevice::ReadOnly);
QImageReader qir;
qir.setAutoDetectImageFormat(false);
QByteArray fmt;
if (RichTextImage::isValidImage(cp->qbaTexture, fmt)) {
qir.setFormat(fmt);
qir.setDevice(&qb);
if (! qir.canRead() || (qir.size().width() > 1024) || (qir.size().height() > 1024)) {
valid = false;
} else {
cp->qbaTextureFormat = qir.format();
QImage qi = qir.read();
valid = ! qi.isNull();
}
} else {
valid = false;
}
}
if (! valid) {
cp->qbaTexture = QByteArray();
cp->qbaTextureHash = QByteArray();
}
}
if (allowupdate)
updateOverlay();
}
typedef QPair<QString, quint32> qpChanCol;
void Overlay::updateOverlay() {
if (! g.uiSession)
qsQueried.clear();
if (qlClients.isEmpty())
return;
qsQuery.clear();
foreach(OverlayClient *oc, qlClients) {
if (! oc->update()) {
qWarning() << "Overlay: Dead client detected. PID" << oc->uiPid << oc->qsExecutablePath;
qlClients.removeAll(oc);
oc->scheduleDelete();
break;
}
}
if (! qsQuery.isEmpty()) {
MumbleProto::RequestBlob mprb;
foreach(unsigned int session, qsQuery) {
qsQueried.insert(session);
mprb.add_session_texture(session);
}
g.sh->sendMessage(mprb);
}
}
void Overlay::requestTexture(ClientUser *cu) {
if (cu->qbaTexture.isEmpty() && ! qsQueried.contains(cu->uiSession)) {
cu->qbaTexture=g.db->blob(cu->qbaTextureHash);
if (cu->qbaTexture.isEmpty())
qsQuery.insert(cu->uiSession);
else
verifyTexture(cu, false);
}
}
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