File indexing completed on 2024-04-28 16:49:01

 /*
     KWin - the KDE window manager
     This file is part of the KDE project.
 
     SPDX-FileCopyrightText: 1999, 2000 Matthias Ettrich <ettrich@kde.org>
     SPDX-FileCopyrightText: 2003 Lubos Lunak <l.lunak@kde.org>
 
     SPDX-License-Identifier: GPL-2.0-or-later
 */
 
 #include "sm.h"
 
 #include <cstdlib>
 #include <kconfig.h>
 #include <pwd.h>
 #include <unistd.h>
 
 #include "virtualdesktops.h"
 #include "workspace.h"
 #include "x11window.h"
 #include <QDebug>
 #include <QSessionManager>
 
 #include "sessionadaptor.h"
 #include <QDBusConnection>
 
 namespace KWin
 {
 
 static KConfig *sessionConfig(QString id, QString key)
 {
     static KConfig *config = nullptr;
     static QString lastId;
     static QString lastKey;
     static QString pattern = QString(QLatin1String("session/%1_%2_%3")).arg(qApp->applicationName());
     if (id != lastId || key != lastKey) {
         delete config;
         config = nullptr;
     }
     lastId = id;
     lastKey = key;
     if (!config) {
         config = new KConfig(pattern.arg(id, key), KConfig::SimpleConfig);
     }
     return config;
 }
 
 static const char *const window_type_names[] = {
     "Unknown", "Normal", "Desktop", "Dock", "Toolbar", "Menu", "Dialog",
     "Override", "TopMenu", "Utility", "Splash"};
 // change also the two functions below when adding new entries
 
 static const char *windowTypeToTxt(NET::WindowType type)
 {
     if (type >= NET::Unknown && type <= NET::Splash) {
         return window_type_names[type + 1]; // +1 (unknown==-1)
     }
     if (type == -2) { // undefined (not really part of NET::WindowType)
         return "Undefined";
     }
     qFatal("Unknown Window Type");
     return nullptr;
 }
 
 static NET::WindowType txtToWindowType(const char *txt)
 {
     for (int i = NET::Unknown;
          i <= NET::Splash;
          ++i) {
         if (qstrcmp(txt, window_type_names[i + 1]) == 0) { // +1
             return static_cast<NET::WindowType>(i);
         }
     }
     return static_cast<NET::WindowType>(-2); // undefined
 }
 
 /**
  * Stores the current session in the config file
  *
  * @see loadSessionInfo
  */
 void SessionManager::storeSession(const QString &sessionName, SMSavePhase phase)
 {
     qCDebug(KWIN_CORE) << "storing session" << sessionName << "in phase" << phase;
     KConfig *config = sessionConfig(sessionName, QString());
 
     KConfigGroup cg(config, "Session");
     int count = 0;
     int active_client = -1;
 
     const QList<X11Window *> x11Clients = workspace()->clientList();
     for (auto it = x11Clients.begin(); it != x11Clients.end(); ++it) {
         X11Window *c = (*it);
         if (c->windowType() > NET::Splash) {
             // window types outside this are not tooltips/menus/OSDs
             // typically these will be unmanaged and not in this list anyway, but that is not enforced
             continue;
         }
         QByteArray sessionId = c->sessionId();
         QString wmCommand = c->wmCommand();
         if (sessionId.isEmpty()) {
             // remember also applications that are not XSMP capable
             // and use the obsolete WM_COMMAND / WM_SAVE_YOURSELF
             if (wmCommand.isEmpty()) {
                 continue;
             }
         }
         count++;
         if (c->isActive()) {
             active_client = count;
         }
         if (phase == SMSavePhase2 || phase == SMSavePhase2Full) {
             storeClient(cg, count, c);
         }
     }
     if (phase == SMSavePhase0) {
         // it would be much simpler to save these values to the config file,
         // but both Qt and KDE treat phase1 and phase2 separately,
         // which results in different sessionkey and different config file :(
         m_sessionActiveClient = active_client;
         m_sessionDesktop = VirtualDesktopManager::self()->current();
     } else if (phase == SMSavePhase2) {
         cg.writeEntry("count", count);
         cg.writeEntry("active", m_sessionActiveClient);
         cg.writeEntry("desktop", m_sessionDesktop);
     } else { // SMSavePhase2Full
         cg.writeEntry("count", count);
         cg.writeEntry("active", m_sessionActiveClient);
         cg.writeEntry("desktop", VirtualDesktopManager::self()->current());
     }
     config->sync(); // it previously did some "revert to defaults" stuff for phase1 I think
 }
 
 void SessionManager::storeClient(KConfigGroup &cg, int num, X11Window *c)
 {
     c->setSessionActivityOverride(false); // make sure we get the real values
     QString n = QString::number(num);
     cg.writeEntry(QLatin1String("sessionId") + n, c->sessionId().constData());
     cg.writeEntry(QLatin1String("windowRole") + n, c->windowRole());
     cg.writeEntry(QLatin1String("wmCommand") + n, c->wmCommand());
     cg.writeEntry(QLatin1String("resourceName") + n, c->resourceName());
     cg.writeEntry(QLatin1String("resourceClass") + n, c->resourceClass());
     cg.writeEntry(QLatin1String("geometry") + n, QRectF(c->calculateGravitation(true), c->clientSize()).toRect()); // FRAME
     cg.writeEntry(QLatin1String("restore") + n, c->geometryRestore());
     cg.writeEntry(QLatin1String("fsrestore") + n, c->fullscreenGeometryRestore());
     cg.writeEntry(QLatin1String("maximize") + n, (int)c->maximizeMode());
     cg.writeEntry(QLatin1String("fullscreen") + n, (int)c->fullScreenMode());
     cg.writeEntry(QLatin1String("desktop") + n, c->desktop());
     // the config entry is called "iconified" for back. comp. reasons
     // (kconf_update script for updating session files would be too complicated)
     cg.writeEntry(QLatin1String("iconified") + n, c->isMinimized());
     cg.writeEntry(QLatin1String("opacity") + n, c->opacity());
     // the config entry is called "sticky" for back. comp. reasons
     cg.writeEntry(QLatin1String("sticky") + n, c->isOnAllDesktops());
     cg.writeEntry(QLatin1String("shaded") + n, c->isShade());
     // the config entry is called "staysOnTop" for back. comp. reasons
     cg.writeEntry(QLatin1String("staysOnTop") + n, c->keepAbove());
     cg.writeEntry(QLatin1String("keepBelow") + n, c->keepBelow());
     cg.writeEntry(QLatin1String("skipTaskbar") + n, c->originalSkipTaskbar());
     cg.writeEntry(QLatin1String("skipPager") + n, c->skipPager());
     cg.writeEntry(QLatin1String("skipSwitcher") + n, c->skipSwitcher());
     // not really just set by user, but name kept for back. comp. reasons
     cg.writeEntry(QLatin1String("userNoBorder") + n, c->userNoBorder());
     cg.writeEntry(QLatin1String("windowType") + n, windowTypeToTxt(c->windowType()));
     cg.writeEntry(QLatin1String("shortcut") + n, c->shortcut().toString());
     cg.writeEntry(QLatin1String("stackingOrder") + n, workspace()->unconstrainedStackingOrder().indexOf(c));
     cg.writeEntry(QLatin1String("activities") + n, c->activities());
 }
 
 void SessionManager::storeSubSession(const QString &name, QSet<QByteArray> sessionIds)
 {
     // TODO clear it first
     KConfigGroup cg(KSharedConfig::openConfig(), QLatin1String("SubSession: ") + name);
     int count = 0;
     int active_client = -1;
     const QList<X11Window *> x11Clients = workspace()->clientList();
 
     for (auto it = x11Clients.begin(); it != x11Clients.end(); ++it) {
         X11Window *c = (*it);
         if (c->windowType() > NET::Splash) {
             continue;
         }
         QByteArray sessionId = c->sessionId();
         QString wmCommand = c->wmCommand();
         if (sessionId.isEmpty()) {
             // remember also applications that are not XSMP capable
             // and use the obsolete WM_COMMAND / WM_SAVE_YOURSELF
             if (wmCommand.isEmpty()) {
                 continue;
             }
         }
         if (!sessionIds.contains(sessionId)) {
             continue;
         }
 
         qCDebug(KWIN_CORE) << "storing" << sessionId;
         count++;
         if (c->isActive()) {
             active_client = count;
         }
         storeClient(cg, count, c);
     }
     cg.writeEntry("count", count);
     cg.writeEntry("active", active_client);
     // cg.writeEntry( "desktop", currentDesktop());
 }
 
 /**
  * Loads the session information from the config file.
  *
  * @see storeSession
  */
 void SessionManager::loadSession(const QString &sessionName)
 {
     session.clear();
     KConfigGroup cg(sessionConfig(sessionName, QString()), "Session");
     Q_EMIT loadSessionRequested(sessionName);
     addSessionInfo(cg);
 }
 
 void SessionManager::addSessionInfo(KConfigGroup &cg)
 {
     workspace()->setInitialDesktop(cg.readEntry("desktop", 1));
     int count = cg.readEntry("count", 0);
     int active_client = cg.readEntry("active", 0);
     for (int i = 1; i <= count; i++) {
         QString n = QString::number(i);
         SessionInfo *info = new SessionInfo;
         session.append(info);
         info->sessionId = cg.readEntry(QLatin1String("sessionId") + n, QString()).toLatin1();
         info->windowRole = cg.readEntry(QLatin1String("windowRole") + n, QString());
         info->wmCommand = cg.readEntry(QLatin1String("wmCommand") + n, QString()).toLatin1();
         info->resourceName = cg.readEntry(QLatin1String("resourceName") + n, QString());
         info->resourceClass = cg.readEntry(QLatin1String("resourceClass") + n, QString()).toLower();
         info->geometry = cg.readEntry(QLatin1String("geometry") + n, QRect());
         info->restore = cg.readEntry(QLatin1String("restore") + n, QRect());
         info->fsrestore = cg.readEntry(QLatin1String("fsrestore") + n, QRect());
         info->maximized = cg.readEntry(QLatin1String("maximize") + n, 0);
         info->fullscreen = cg.readEntry(QLatin1String("fullscreen") + n, 0);
         info->desktop = cg.readEntry(QLatin1String("desktop") + n, 0);
         info->minimized = cg.readEntry(QLatin1String("iconified") + n, false);
         info->opacity = cg.readEntry(QLatin1String("opacity") + n, 1.0);
         info->onAllDesktops = cg.readEntry(QLatin1String("sticky") + n, false);
         info->shaded = cg.readEntry(QLatin1String("shaded") + n, false);
         info->keepAbove = cg.readEntry(QLatin1String("staysOnTop") + n, false);
         info->keepBelow = cg.readEntry(QLatin1String("keepBelow") + n, false);
         info->skipTaskbar = cg.readEntry(QLatin1String("skipTaskbar") + n, false);
         info->skipPager = cg.readEntry(QLatin1String("skipPager") + n, false);
         info->skipSwitcher = cg.readEntry(QLatin1String("skipSwitcher") + n, false);
         info->noBorder = cg.readEntry(QLatin1String("userNoBorder") + n, false);
         info->windowType = txtToWindowType(cg.readEntry(QLatin1String("windowType") + n, QString()).toLatin1().constData());
         info->shortcut = cg.readEntry(QLatin1String("shortcut") + n, QString());
         info->active = (active_client == i);
         info->stackingOrder = cg.readEntry(QLatin1String("stackingOrder") + n, -1);
         info->activities = cg.readEntry(QLatin1String("activities") + n, QStringList());
     }
 }
 
 void SessionManager::loadSubSessionInfo(const QString &name)
 {
     KConfigGroup cg(KSharedConfig::openConfig(), QLatin1String("SubSession: ") + name);
     addSessionInfo(cg);
 }
 
 static bool sessionInfoWindowTypeMatch(X11Window *c, SessionInfo *info)
 {
     if (info->windowType == -2) {
         // undefined (not really part of NET::WindowType)
         return !c->isSpecialWindow();
     }
     return info->windowType == c->windowType();
 }
 
 /**
  * Returns a SessionInfo for client \a c. The returned session
  * info is removed from the storage. It's up to the caller to delete it.
  *
  * This function is called when a new window is mapped and must be managed.
  * We try to find a matching entry in the session.
  *
  * May return 0 if there's no session info for the client.
  */
 SessionInfo *SessionManager::takeSessionInfo(X11Window *c)
 {
     SessionInfo *realInfo = nullptr;
     QByteArray sessionId = c->sessionId();
     QString windowRole = c->windowRole();
     QString wmCommand = c->wmCommand();
     QString resourceName = c->resourceName();
     QString resourceClass = c->resourceClass();
 
     // First search ``session''
     if (!sessionId.isEmpty()) {
         // look for a real session managed client (algorithm suggested by ICCCM)
         for (SessionInfo *info : std::as_const(session)) {
             if (realInfo) {
                 break;
             }
             if (info->sessionId == sessionId && sessionInfoWindowTypeMatch(c, info)) {
                 if (!windowRole.isEmpty()) {
                     if (info->windowRole == windowRole) {
                         realInfo = info;
                         session.removeAll(info);
                     }
                 } else {
                     if (info->windowRole.isEmpty()
                         && info->resourceName == resourceName
                         && info->resourceClass == resourceClass) {
                         realInfo = info;
                         session.removeAll(info);
                     }
                 }
             }
         }
     } else {
         // look for a sessioninfo with matching features.
         for (SessionInfo *info : std::as_const(session)) {
             if (realInfo) {
                 break;
             }
             if (info->resourceName == resourceName
                 && info->resourceClass == resourceClass
                 && sessionInfoWindowTypeMatch(c, info)) {
                 if (wmCommand.isEmpty() || info->wmCommand == wmCommand) {
                     realInfo = info;
                     session.removeAll(info);
                 }
             }
         }
     }
     return realInfo;
 }
 
 SessionManager::SessionManager(QObject *parent)
     : QObject(parent)
 {
     new SessionAdaptor(this);
     QDBusConnection::sessionBus().registerObject(QStringLiteral("/Session"), this);
 }
 
 SessionManager::~SessionManager()
 {
     qDeleteAll(session);
 }
 
 SessionState SessionManager::state() const
 {
     return m_sessionState;
 }
 
 void SessionManager::setState(uint state)
 {
     switch (state) {
     case 0:
         setState(SessionState::Saving);
         break;
     case 1:
         setState(SessionState::Quitting);
         break;
     default:
         setState(SessionState::Normal);
     }
 }
 
 // TODO should we rethink this now that we have dedicated start end end save methods?
 void SessionManager::setState(SessionState state)
 {
     if (state == m_sessionState) {
         return;
     }
     // If we're starting to save a session
     if (state == SessionState::Saving) {
         workspace()->rulebook()->setUpdatesDisabled(true);
     }
     // If we're ending a save session due to either completion or cancellation
     if (m_sessionState == SessionState::Saving) {
         workspace()->rulebook()->setUpdatesDisabled(false);
         Workspace::self()->forEachClient([](X11Window *client) {
             client->setSessionActivityOverride(false);
         });
     }
     m_sessionState = state;
     Q_EMIT stateChanged();
 }
 
 void SessionManager::aboutToSaveSession(const QString &name)
 {
     Q_EMIT prepareSessionSaveRequested(name);
     storeSession(name, SMSavePhase0);
 }
 
 void SessionManager::finishSaveSession(const QString &name)
 {
     Q_EMIT finishSessionSaveRequested(name);
     storeSession(name, SMSavePhase2);
 }
 
 void SessionManager::quit()
 {
     qApp->quit();
 }
 
 } // namespace