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Diffstat (limited to 'kmail/kmstartup.cpp')
-rw-r--r-- | kmail/kmstartup.cpp | 268 |
1 files changed, 268 insertions, 0 deletions
diff --git a/kmail/kmstartup.cpp b/kmail/kmstartup.cpp new file mode 100644 index 000000000..d1967a3e4 --- /dev/null +++ b/kmail/kmstartup.cpp @@ -0,0 +1,268 @@ +/* + This file is part of KMail, the KDE mail client. + Copyright (c) 2000 Don Sanders <[email protected]> + + KMail is free software; you can redistribute it and/or modify it + under the terms of the GNU General Public License, version 2, as + published by the Free Software Foundation. + + KMail 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, write to the Free Software + Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA +*/ + +#include <config.h> + +#include "kmstartup.h" + +#include "kmkernel.h" //control center +#include "kcursorsaver.h" + +#include <klocale.h> +#include <ksimpleconfig.h> +#include <kstandarddirs.h> +#include <kmessagebox.h> +#include <dcopclient.h> +#include <kcrash.h> +#include <kglobal.h> +#include <kapplication.h> +#include <kaboutdata.h> +#include <kiconloader.h> + +#include <errno.h> +#include <sys/types.h> +#include <sys/param.h> +#include <signal.h> +#include <stdio.h> +#include <stdlib.h> +#include <unistd.h> +#include <qfile.h> + +#undef Status // stupid X headers + +extern "C" { + +// Crash recovery signal handler +void kmsignalHandler(int sigId) +{ + kmsetSignalHandler(SIG_DFL); + fprintf(stderr, "*** KMail got signal %d (Exiting)\n", sigId); + // try to cleanup all windows + if (kmkernel) kmkernel->dumpDeadLetters(); + ::exit(-1); // +} + +// Crash recovery signal handler +void kmcrashHandler(int sigId) +{ + kmsetSignalHandler(SIG_DFL); + fprintf(stderr, "*** KMail got signal %d (Crashing)\n", sigId); + // try to cleanup all windows + if (kmkernel) kmkernel->dumpDeadLetters(); + // Return to DrKonqi. +} +//----------------------------------------------------------------------------- + + +void kmsetSignalHandler(void (*handler)(int)) +{ + signal(SIGKILL, handler); + signal(SIGTERM, handler); + signal(SIGHUP, handler); + KCrash::setEmergencySaveFunction(kmcrashHandler); +} + +} +//----------------------------------------------------------------------------- + +namespace { + QString getMyHostName() { + char hostNameC[256]; + // null terminate this C string + hostNameC[255] = 0; + // set the string to 0 length if gethostname fails + if(gethostname(hostNameC, 255)) + hostNameC[0] = 0; + return QString::fromLocal8Bit(hostNameC); + } +} // anon namespace + +namespace KMail { + +void checkConfigUpdates() { + static const char * const updates[] = { + "9", + "3.1-update-identities", + "3.1-use-identity-uoids", + "3.1-new-mail-notification", + "3.2-update-loop-on-goto-unread-settings", + "3.1.4-dont-use-UOID-0-for-any-identity", + "3.2-misc", + "3.2-moves", + "3.3-use-ID-for-accounts", + "3.3-update-filter-rules", + "3.3-move-identities-to-own-file", + "3.3-aegypten-kpgprc-to-kmailrc", + "3.3-aegypten-kpgprc-to-libkleopatrarc", + "3.3-aegypten-emailidentities-split-sign-encr-keys", + "3.3-misc", + "3.3b1-misc", + "3.4-misc", + "3.4a", + "3.4b", + "3.4.1", + "3.5.4", + "3.5.7-imap-flag-migration" + }; + static const int numUpdates = sizeof updates / sizeof *updates; + // Warning: do not remove entries in the above array, or the update-level check below will break + + KConfig * config = KMKernel::config(); + KConfigGroup startup( config, "Startup" ); + const int configUpdateLevel = startup.readNumEntry( "update-level", 0 ); + if ( configUpdateLevel == numUpdates ) // Optimize for the common case that everything is OK + return; + + for ( int i = configUpdateLevel ; i < numUpdates ; ++i ) { + config->checkUpdate( updates[i], "kmail.upd" ); + } + startup.writeEntry( "update-level", numUpdates ); +} + +void lockOrDie() { +// Check and create a lock file to prevent concurrent access to kmail files + QString appName = kapp->instanceName(); + if ( appName.isEmpty() ) + appName = "kmail"; + + QString programName; + const KAboutData *about = kapp->aboutData(); + if ( about ) + programName = about->programName(); + if ( programName.isEmpty() ) + programName = i18n("KMail"); + + QString lockLocation = locateLocal("data", "kmail/lock"); + KSimpleConfig config(lockLocation); + int oldPid = config.readNumEntry("pid", -1); + const QString oldHostName = config.readEntry("hostname"); + const QString oldAppName = config.readEntry( "appName", appName ); + const QString oldProgramName = config.readEntry( "programName", programName ); + const QString hostName = getMyHostName(); + bool first_instance = false; + if ( oldPid == -1 ) + first_instance = true; + else if (hostName == oldHostName && oldPid != getpid()) { + // check if the lock file is stale +#ifdef Q_OS_LINUX + if ( ::access("/proc", X_OK ) == 0 ) { + // On linux with /proc we can even check that it's really kmail and not something else + char path_buffer[MAXPATHLEN + 1]; + path_buffer[MAXPATHLEN] = 0; + const QString procPath = QString("/proc/%1/exe").arg(oldPid); + const int length = readlink (procPath.latin1(), path_buffer, MAXPATHLEN); + if ( length == -1 ) // not such pid + first_instance = true; + else { + path_buffer[length] = '\0'; + const QString path = QFile::decodeName(path_buffer); + kdDebug() << k_funcinfo << path << endl; + const int pos = path.findRev('/'); + const QString fileName = path.mid(pos+1); + kdDebug() << "Found process " << oldPid << " running. It's: " << fileName << endl; + first_instance = fileName != "kmail" && fileName != "kontact"; + } + } else +#endif + { + // Otherwise we just check if the other pid is currently running. + // Not 100% correct but better safe than sorry. + if ( kill(oldPid, 0) == -1 ) + first_instance = ( errno == ESRCH ); + } + } + + if ( !first_instance ) { + QString msg; + if ( oldHostName == hostName ) { + // this can only happen if the user is running this application on + // different displays on the same machine. All other cases will be + // taken care of by KUniqueApplication() + if ( oldAppName == appName ) + msg = i18n("%1 already seems to be running on another display on " + "this machine. Running %2 more than once " + "can cause the loss of mail. You should not start %1 " + "unless you are sure that it is not already running.") + .arg( programName, programName ); + // QString::arg( st ) only replaces the first occurrence of %1 + // with st while QString::arg( s1, s2 ) replacess all occurrences + // of %1 with s1 and all occurrences of %2 with s2. So don't + // even think about changing the above to .arg( programName ). + else + msg = i18n("%1 seems to be running on another display on this " + "machine. Running %1 and %2 at the same " + "time can cause the loss of mail. You should not start %2 " + "unless you are sure that %1 is not running.") + .arg( oldProgramName, programName ); + } + else { + if ( oldAppName == appName ) + msg = i18n("%1 already seems to be running on %2. Running %1 more " + "than once can cause the loss of mail. You should not " + "start %1 on this computer unless you are sure that it is " + "not already running on %2.") + .arg( programName, oldHostName ); + else + msg = i18n("%1 seems to be running on %3. Running %1 and %2 at the " + "same time can cause the loss of mail. You should not " + "start %2 on this computer unless you are sure that %1 is " + "not running on %3.") + .arg( oldProgramName, programName, oldHostName ); + } + + KCursorSaver idle( KBusyPtr::idle() ); + if ( KMessageBox::No == + KMessageBox::warningYesNo( 0, msg, QString::null, + i18n("Start %1").arg( programName ), + i18n("Exit") ) ) { + exit(1); + } + } + + config.writeEntry("pid", getpid()); + config.writeEntry("hostname", hostName); + config.writeEntry( "appName", appName ); + config.writeEntry( "programName", programName ); + config.sync(); +} + +void insertLibraryCataloguesAndIcons() { + static const char * const catalogues[] = { + "libkdepim", + "libksieve", + "libkleopatra", + "libkmime" + }; + + KLocale * l = KGlobal::locale(); + KIconLoader * il = KGlobal::iconLoader(); + for ( unsigned int i = 0 ; i < sizeof catalogues / sizeof *catalogues ; ++i ) { + l->insertCatalogue( catalogues[i] ); + il->addAppDir( catalogues[i] ); + } + +} + +void cleanup() +{ + const QString lockLocation = locateLocal("data", "kmail/lock"); + KSimpleConfig config(lockLocation); + config.writeEntry("pid", -1); + config.sync(); +} +} |