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//===========================================
// Lumina-DE source code
// Copyright (c) 2016, Ken Moore
// Available under the 3-clause BSD license
// See the LICENSE file for full details
//===========================================
#include "session.h"
#include <QObject>
#include <QProcess>
#include <QProcessEnvironment>
#include <QDebug>
#include <QSettings>
#include <QDir>
#include <LUtils.h>
#include <LuminaOS.h>
#include <LDesktopUtils.h>
#include <LuminaSingleApplication.h>
void LSession::stopall(){
stopping = true;
for(int i=0; i<PROCS.length(); i++){
if(PROCS[i]->state()!=QProcess::NotRunning){ PROCS[i]->kill(); }
}
QCoreApplication::processEvents();
for(int i=0; i<PROCS.length(); i++){
if(PROCS[i]->state()!=QProcess::NotRunning){ PROCS[i]->terminate(); }
}
QCoreApplication::exit(0);
}
void LSession::procFinished(){
//Go through and check the status on all the procs to determine which one finished
int stopped = 0;
//qDebug() << "Got Process Stopped Signal:";
for(int i=0; i<PROCS.length(); i++){
if(PROCS[i]->state()==QProcess::NotRunning){
//qDebug() << " - Stopped:" << PROCS[i]->objectName();
stopped++;
if(!stopping){
//See if this process is the main desktop binary
if(PROCS[i]->objectName()=="runtime"){
qDebug() << "Got Desktop Process Finished:" << PROCS[i]->exitCode();
//if(PROCS[i]->exitCode()==787){ PROCS[i]->start(QIODevice::ReadOnly); } //special internal restart code
//else{
stopall(); //}
}else if(PROCS[i]->objectName()=="wm" && wmfails<2){ wmfails++; PROCS[i]->start(QIODevice::ReadOnly); wmTimer->start(); } //restart the WM
//if(PROCS[i]->program().section("/",-1) == "lumina-desktop"){ stopall(); } //start closing down everything
//else{ PROCS[i]->start(QIODevice::ReadOnly); } //restart the process
//break;
}
}
}
//qDebug() << " - Final Count:" << stopped << stopping;
if(stopping || stopped==PROCS.length()){
//Note about compton: It does not like running multiple sessions under the *same user*
// (even on different displays). Run a blanket killall on it when closing down so that
// any other Lumina sessions will automatically restart compton on that specific display
QProcess::execute("killall compton");
QCoreApplication::exit(0);
}else{
//Make sure we restart the process as needed
for(int i=0; i<PROCS.length(); i++){
if(PROCS[i]->state()==QProcess::NotRunning){
//runtime/wm processes have special restart rules above
if(PROCS[i]->objectName()!="runtime" && PROCS[i]->objectName()!="wm"){
PROCS[i]->start(QIODevice::ReadOnly);
}
}
}
}
}
void LSession::startProcess(QString ID, QString command, QStringList watchfiles){
QString dir = QString(getenv("XDG_CONFIG_HOME"))+"/lumina-desktop/logs";
QString display = QString(getenv("DISPLAY")).section(":",1,1);
if(!QFile::exists(dir)){ QDir tmp(dir); tmp.mkpath(dir); }
QString logfile = dir+"/"+ID+"_"+display+".log";
if(QFile::exists(logfile+".old")){ QFile::remove(logfile+".old"); }
if(QFile::exists(logfile)){ QFile::rename(logfile,logfile+".old"); }
LProcess *proc = new LProcess(ID, watchfiles);
proc->setProcessChannelMode(QProcess::MergedChannels);
proc->setProcessEnvironment( QProcessEnvironment::systemEnvironment() );
proc->setStandardOutputFile(logfile);
proc->setObjectName(ID);
if(ID=="runtime"){
//Bypass for a hidden dbus file requirement for Qt itself (Qt 5.5.1+?)
if(!QFile::exists("/etc/machine-id") && !QFile::exists("/var/db/dbus/machine-id")){
if(LUtils::isValidBinary("dbus-uuidgen") && LUtils::runCmd("dbus-uuidgen --ensure") ){ } //good - the UUID was created successfully
else if(LUtils::isValidBinary("dbus-launch")){ command.prepend("dbus-launch --exit-with-session "); }
else{
//create a simple DBUS UUID and put it in the universal-fallback location (OS-independent)
// TO-DO - root vs user level permissions issue?
qDebug() << "Could not find '/etc/machine-id' or '/var/db/dbus/machine-id': Qt will most likely crash. \nPlease run 'dbus-uuidgen --ensure' with root permissions to generate this file if Lumina does not start properly.";
}
}
}
proc->start(command, QIODevice::ReadOnly);
connect(proc, SIGNAL(finished(int, QProcess::ExitStatus)), this, SLOT(procFinished()) );
PROCS << proc;
}
void LSession::setupCompositor(bool force){
//Compositing manager
QSettings settings("lumina-desktop","sessionsettings");
if(settings.value("enableCompositing",false).toBool() || force){
if(LUtils::isValidBinary("compton")){
//Compton available - check the config file
QString set = QString(getenv("XDG_CONFIG_HOME"))+"/lumina-desktop/compton.conf";
if(!QFile::exists(set)){
if(QFile::exists(LOS::LuminaShare()+"/compton.conf")){
QFile::copy(LOS::LuminaShare()+"/compton.conf", set);
}
}
//Auto-detect if GLX is available on the system and turn it on/off as needed
bool startcompton = true;
bool hasAccel = false;
if(LUtils::isValidBinary("glxinfo")){
hasAccel =! LUtils::getCmdOutput("glxinfo -B").filter("direct rendering:").filter("Yes").isEmpty();
qDebug() << "Detected GPU Acceleration:" << hasAccel;
/*QStringList info = LUtils::readFile(set);
for(int i=0; i<info.length(); i++){
if(info[i].section("=",0,0).simplified()=="backend"){ info[i] = QString("backend = \"")+ (hasAccel ? "glx" : "xrender")+"\""; break; } //replace this line
}
LUtils::writeFile(set, info, true);*/
if( !hasAccel && settings.value("compositingWithGpuAccelOnly",true).toBool() ){ startcompton = false; }
}
QString disp = getenv("DISPLAY");
// Prefer GLX-accel only if that is detected as possible
if( (startcompton || force) && hasAccel ){ startProcess("compositing","compton --backend glx -d "+disp+" --config "+set, QStringList() << set); }
//if cannot determine if GLX accel is available, use the hybrid glx/xrender backend for some better auto-setting stuff
else if(startcompton || force){ startProcess("compositing","compton --backend xr_glx_hybrid -d "+disp+" --config "+set, QStringList() << set); }
}else if(LUtils::isValidBinary("xcompmgr") && !settings.value("compositingWithGpuAccelOnly",true).toBool() ){ startProcess("compositing","xcompmgr"); }
}
}
void LSession::start(bool unified){
//First check for a valid installation
if(!LUtils::isValidBinary("lumina-desktop") ){
exit(1);
}
setenv("DESKTOP_SESSION","Lumina",1);
setenv("XDG_CURRENT_DESKTOP","Lumina",1);
setenv("QT_QPA_PLATFORMTHEME","lthemeengine", true);
setenv("QT_NO_GLIB", "1", 1); //Disable the glib event loop within Qt at runtime (performance hit + bugs)
unsetenv("QT_AUTO_SCREEN_SCALE_FACTOR"); //need exact-pixel measurements (no fake scaling)
if(LUtils::isValidBinary("xdg-user-dirs-update")){
//Make sure the XDG user directories are created as needed first
QProcess::execute("xdg-user-dirs-update");
}
if(!unified){
QSettings sessionsettings("lumina-desktop","sessionsettings");
QString WM = sessionsettings.value("WindowManager", "fluxbox").toString();
//Window Manager First
if(WM=="fluxbox" || WM.endsWith("/fluxbox") || WM.simplified().isEmpty() ){
// FLUXBOX BUG BYPASS: if the ~/.fluxbox dir does not exist, it will ignore the given config file
if( !LUtils::isValidBinary("fluxbox") ){
qDebug() << "[INCOMPLETE LUMINA INSTALLATION] fluxbox binary is missing - cannot continue";
}else{
QString confDir = QString( getenv("XDG_CONFIG_HOME"))+"/lumina-desktop";
if(!QFile::exists(confDir)){ QDir dir(confDir); dir.mkpath(confDir); }
if(!QFile::exists(confDir+"/fluxbox-init")){
QStringList keys = LUtils::readFile(LOS::LuminaShare()+"/fluxbox-init-rc");
keys = keys.replaceInStrings("${XDG_CONFIG_HOME}", QString( getenv("XDG_CONFIG_HOME")));
LUtils::writeFile(confDir+"/fluxbox-init", keys, true);
QFile::setPermissions(confDir+"/fluxbox-init", QFile::ReadOwner | QFile::WriteOwner | QFile::ReadUser | QFile::ReadOther | QFile::ReadGroup);
}
if(!QFile::exists(confDir+"/fluxbox-keys")){
QStringList keys = LUtils::readFile(LOS::LuminaShare()+"/fluxbox-keys");
keys = keys.replaceInStrings("${XDG_CONFIG_HOME}", QString( getenv("XDG_CONFIG_HOME")));
LUtils::writeFile(confDir+"/fluxbox-keys", keys, true);
QFile::setPermissions(confDir+"/fluxbox-keys", QFile::ReadOwner | QFile::WriteOwner | QFile::ReadUser | QFile::ReadOther | QFile::ReadGroup);
}
if(!QFile::exists(confDir+"/fluxbox-overlay")){
QStringList contents; contents << "background: unset";
LUtils::writeFile(confDir+"/fluxbox-overlay", contents, true);
//Now make sure this overlay file is set within the init file
contents = LUtils::readFile(confDir+"/fluxbox-init");
contents << "session.styleOverlay: "+confDir+"/fluxbox-overlay";
LUtils::writeFile(confDir+"/fluxbox-init", contents, true);
}
// FLUXBOX BUG BYPASS: if the ~/.fluxbox dir does not exist, it will ignore the given config file
if(!QFile::exists(QDir::homePath()+"/.fluxbox")){
QDir dir; dir.mkpath(QDir::homePath()+"/.fluxbox");
}
QString cmd = "fluxbox -rc "+confDir+"/fluxbox-init -no-slit -no-toolbar";
startProcess("wm", cmd, QStringList() << confDir+"/fluxbox-init" << confDir+"/fluxbox-keys");
}
//Compositing manager
setupCompositor();
} else {
if(!LUtils::isValidBinary(WM)){
exit(1);
}
startProcess("wm", WM);
}
//Desktop Next
LSingleApplication::removeLocks("lumina-desktop");
startProcess("runtime","lumina-desktop");
//ScreenSaver
if(LUtils::isValidBinary("xscreensaver")){ startProcess("screensaver","xscreensaver -no-splash"); }
}else{
//unified process
setupCompositor(true); //required for Lumina 2
LSingleApplication::removeLocks("lumina-desktop-unified");
startProcess("runtime","lumina-desktop-unified");
}
}
void LSession::checkFiles(){
//internal version conversion examples:
// [1.0.0 -> 1000000], [1.2.3 -> 1002003], [0.6.1 -> 6001]
qDebug() << "[Lumina] Checking User Files";
QSettings sset("lumina-desktop", "sessionsettings");
QString OVS = sset.value("DesktopVersion","0").toString(); //Old Version String
qDebug() << " - Old Version:" << OVS;
qDebug() << " - Current Version:" << LDesktopUtils::LuminaDesktopVersion();
bool changed = LDesktopUtils::checkUserFiles(OVS, LDesktopUtils::LuminaDesktopVersion());
qDebug() << " - Made Changes:" << changed;
if(changed){
//Save the current version of the session to the settings file (for next time)
sset.setValue("DesktopVersion", LDesktopUtils::LuminaDesktopVersion());
}
qDebug() << "Finished with user files check";
}
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