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tdepim/kalarm/kalarmd/alarmdaemon.cpp

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/*
* alarmdaemon.cpp - alarm daemon control routines
* Program: KAlarm's alarm daemon (kalarmd)
* Copyright © 2001,2004-2007 by David Jarvie <software@astrojar.org.uk>
* Based on the original, (c) 1998, 1999 Preston Brown
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation; either version 2 of the License, or
* (at your option) any later version.
*
* This program 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 "kalarmd.h"
#include <unistd.h>
#include <stdlib.h>
#include <tqtimer.h>
#include <tqfile.h>
#include <tqdatetime.h>
#include <kapplication.h>
#include <kstandarddirs.h>
#include <kprocess.h>
#include <kio/netaccess.h>
#include <dcopclient.h>
#include <kconfig.h>
#include <kdebug.h>
#include <libkcal/calendarlocal.h>
#include <libkcal/icalformat.h>
#include "adcalendar.h"
#include "adconfigdata.h"
#include "alarmguiiface.h"
#include "alarmguiiface_stub.h"
#include "alarmdaemon.moc"
#ifdef AUTOSTART_KALARM
// Number of seconds to wait before autostarting KAlarm.
// Allow plenty of time for session restoration to happen first.
static const int KALARM_AUTOSTART_TIMEOUT = 30;
#endif
static const int SECS_PER_DAY = 3600 * 24;
// KAlarm config file keys
static const TQString START_OF_DAY(TQString::tqfromLatin1("StartOfDay"));
static const TQString AUTOSTART_TRAY(TQString::tqfromLatin1("AutostartTray"));
AlarmDaemon::AlarmDaemon(bool autostart, TQObject *parent, const char *name)
: DCOPObject(name),
TQObject(parent, name),
mAlarmTimer(0)
{
kdDebug(5900) << "AlarmDaemon::AlarmDaemon()" << endl;
ADConfigData::readConfig();
ADConfigData::enableAutoStart(true); // switch autostart on whenever the program is run
readKAlarmConfig(); // read time-related KAlarm config items
#ifdef AUTOSTART_KALARM
if (autostart)
{
/* The alarm daemon is being autostarted.
* Check if KAlarm needs to be autostarted in the system tray.
* This should ideally be handled internally by KAlarm, but is done by kalarmd
* for the following reason:
* KAlarm needs to be both session restored and autostarted, but KDE doesn't
* currently cater properly for this - there is no guarantee that the session
* restoration activation will come before the autostart activation. If they
* come in the wrong order, KAlarm won't know that it is supposed to restore
* itself and instead will simply open a new window.
*/
KConfig kaconfig(locate("config", "kalarmrc"));
kaconfig.setGroup(TQString::tqfromLatin1("General"));
autostart = kaconfig.readBoolEntry(AUTOSTART_TRAY, false);
if (autostart)
{
kdDebug(5900) << "AlarmDaemon::AlarmDaemon(): wait to autostart KAlarm\n";
TQTimer::singleShot(KALARM_AUTOSTART_TIMEOUT * 1000, this, TQT_SLOT(autostartKAlarm()));
}
}
if (!autostart)
#endif
startMonitoring(); // otherwise, start monitoring alarms now
}
/******************************************************************************
* DCOP call to quit the program.
*/
void AlarmDaemon::quit()
{
kdDebug(5900) << "AlarmDaemon::quit()" << endl;
exit(0);
}
/******************************************************************************
* Called after a timer delay to autostart KAlarm in the system tray.
*/
void AlarmDaemon::autostartKAlarm()
{
#ifdef AUTOSTART_KALARM
if (mAlarmTimer)
{
kdDebug(5900) << "AlarmDaemon::autostartKAlarm(): KAlarm already registered\n";
return; // KAlarm has already registered with us
}
kdDebug(5900) << "AlarmDaemon::autostartKAlarm(): starting KAlarm\n";
TQStringList args;
args << TQString::tqfromLatin1("--tray");
int ret = KApplication::kdeinitExec(TQString::tqfromLatin1("kalarm"), args);
if (ret)
kdError(5900) << "AlarmDaemon::autostartKAlarm(): error=" << ret << endl;
else
kdDebug(5900) << "AlarmDaemon::autostartKAlarm(): success" << endl;
startMonitoring();
#endif
}
/******************************************************************************
* Start monitoring alarms.
*/
void AlarmDaemon::startMonitoring()
{
// Set up the alarm timer
mAlarmTimer = new TQTimer(this);
connect(mAlarmTimer, TQT_SIGNAL(timeout()), TQT_SLOT(checkAlarmsSlot()));
setTimerStatus();
// Start monitoring calendar files.
// They are monitored until their client application registers, upon which
// monitoring ceases until KAlarm tells the daemon to monitor it.
checkAlarms();
}
/******************************************************************************
* DCOP call to enable or disable monitoring of a calendar.
*/
void AlarmDaemon::enableCal(const TQString& urlString, bool enable)
{
kdDebug(5900) << "AlarmDaemon::enableCal(" << urlString << ")" << endl;
ADCalendar* cal = ADCalendar::getCalendar(urlString);
if (cal)
{
cal->setEnabled(enable);
notifyCalStatus(cal); // notify KAlarm
}
}
/******************************************************************************
* DCOP call to reload, and optionally reset, the specified calendar.
*/
void AlarmDaemon::reloadCal(const TQCString& appname, const TQString& urlString, bool reset)
{
kdDebug(5900) << "AlarmDaemon::reloadCal(" << urlString << ")" << endl;
ADCalendar* cal = ADCalendar::getCalendar(urlString);
if (!cal || cal->appName() != appname)
return;
reloadCal(cal, reset);
}
/******************************************************************************
* Reload the specified calendar.
* If 'reset' is true, the data associated with the calendar is reset.
*/
void AlarmDaemon::reloadCal(ADCalendar* cal, bool reset)
{
kdDebug(5900) << "AlarmDaemon::reloadCal(): calendar" << endl;
if (!cal)
return;
if (!cal->downloading())
{
cal->close();
if (!cal->setLoadedConnected())
connect(cal, TQT_SIGNAL(loaded(ADCalendar*, bool)), TQT_SLOT(calendarLoaded(ADCalendar*, bool)));
cal->loadFile(reset);
}
else if (reset)
cal->clearEventsHandled();
}
void AlarmDaemon::calendarLoaded(ADCalendar* cal, bool success)
{
if (success)
kdDebug(5900) << "Calendar reloaded" << endl;
notifyCalStatus(cal); // notify KAlarm
setTimerStatus();
checkAlarms(cal);
}
/******************************************************************************
* DCOP call to notify the daemon that an event has been handled, and optionally
* to tell it to reload the calendar.
*/
void AlarmDaemon::eventHandled(const TQCString& appname, const TQString& calendarUrl, const TQString& eventID, bool reload)
{
TQString urlString = expandURL(calendarUrl);
kdDebug(5900) << "AlarmDaemon::eventHandled(" << urlString << (reload ? "): reload" : ")") << endl;
ADCalendar* cal = ADCalendar::getCalendar(urlString);
if (!cal || cal->appName() != appname)
return;
cal->setEventHandled(eventID);
if (reload)
reloadCal(cal, false);
}
/******************************************************************************
* DCOP call to add an application to the list of client applications,
* and add it to the config file.
* N.B. This method must not return a bool because DCOPClient::call() can cause
* a hang if the daemon happens to send a notification to KAlarm at the
* same time as KAlarm calls this DCCOP method.
*/
void AlarmDaemon::registerApp(const TQCString& appName, const TQString& appTitle,
const TQCString& dcopObject, const TQString& calendarUrl,
bool startClient)
{
kdDebug(5900) << "AlarmDaemon::registerApp(" << appName << ", " << appTitle << ", "
<< dcopObject << ", " << startClient << ")" << endl;
KAlarmd::RegisterResult result;
if (appName.isEmpty())
result = KAlarmd::FAILURE;
else if (startClient && KStandardDirs::findExe(appName).isNull())
{
kdError() << "AlarmDaemon::registerApp(): app not found" << endl;
result = KAlarmd::NOT_FOUND;
}
else
{
ADCalendar* keepCal = 0;
ClientInfo* client = ClientInfo::get(appName);
if (client)
{
// The application is already a client.
// If it's the same calendar file, don't delete its calendar object.
if (client->calendar() && client->calendar()->urlString() == calendarUrl)
{
keepCal = client->calendar();
client->detachCalendar();
}
ClientInfo::remove(appName); // this deletes the calendar if not detached
}
if (keepCal)
client = new ClientInfo(appName, appTitle, dcopObject, keepCal, startClient);
else
client = new ClientInfo(appName, appTitle, dcopObject, calendarUrl, startClient);
client->calendar()->setUnregistered(false);
ADConfigData::writeClient(appName, client);
ADConfigData::enableAutoStart(true);
setTimerStatus();
notifyCalStatus(client->calendar());
result = KAlarmd::SUCCESS;
}
// Notify the client of whether the call succeeded.
AlarmGuiIface_stub stub(appName, dcopObject);
stub.registered(false, result, DAEMON_VERSION_NUM);
kdDebug(5900) << "AlarmDaemon::registerApp() -> " << result << endl;
}
/******************************************************************************
* DCOP call to change whether KAlarm should be started when an event needs to
* be notified to it.
* N.B. This method must not return a bool because DCOPClient::call() can cause
* a hang if the daemon happens to send a notification to KAlarm at the
* same time as KAlarm calls this DCCOP method.
*/
void AlarmDaemon::registerChange(const TQCString& appName, bool startClient)
{
kdDebug(5900) << "AlarmDaemon::registerChange(" << appName << ", " << startClient << ")" << endl;
KAlarmd::RegisterResult result;
ClientInfo* client = ClientInfo::get(appName);
if (!client)
return; // can't access client to tell it the result
if (startClient && KStandardDirs::findExe(appName).isNull())
{
kdError() << "AlarmDaemon::registerChange(): app not found" << endl;
result = KAlarmd::NOT_FOUND;
}
else
{
client->setStartClient(startClient);
ADConfigData::writeClient(appName, client);
result = KAlarmd::SUCCESS;
}
// Notify the client of whether the call succeeded.
AlarmGuiIface_stub stub(appName, client->dcopObject());
stub.registered(true, result, DAEMON_VERSION_NUM);
kdDebug(5900) << "AlarmDaemon::registerChange() -> " << result << endl;
}
/******************************************************************************
* DCOP call to set autostart at login on or off.
*/
void AlarmDaemon::enableAutoStart(bool on)
{
ADConfigData::enableAutoStart(on);
}
/******************************************************************************
* Check if any alarms are pending for any enabled calendar, and display the
* pending alarms.
* Called by the alarm timer.
*/
void AlarmDaemon::checkAlarmsSlot()
{
kdDebug(5901) << "AlarmDaemon::checkAlarmsSlot()" << endl;
if (mAlarmTimerSyncing)
{
// We've synched to the minute boundary. Now set timer to the check interval.
mAlarmTimer->changeInterval(DAEMON_CHECK_INTERVAL * 1000);
mAlarmTimerSyncing = false;
mAlarmTimerSyncCount = 10; // resynch every 10 minutes, in case of glitches
}
else if (--mAlarmTimerSyncCount <= 0)
{
int interval = DAEMON_CHECK_INTERVAL + 1 - TQTime::currentTime().second();
if (interval < DAEMON_CHECK_INTERVAL - 1)
{
// Need to re-synch to 1 second past the minute
mAlarmTimer->changeInterval(interval * 1000);
mAlarmTimerSyncing = true;
kdDebug(5900) << "Resynching alarm timer" << endl;
}
else
mAlarmTimerSyncCount = 10;
}
checkAlarms();
}
/******************************************************************************
* Check if any alarms are pending for any enabled calendar, and display the
* pending alarms.
*/
void AlarmDaemon::checkAlarms()
{
kdDebug(5901) << "AlarmDaemon::checkAlarms()" << endl;
for (ADCalendar::ConstIterator it = ADCalendar::begin(); it != ADCalendar::end(); ++it)
checkAlarms(*it);
}
/******************************************************************************
* Check if any alarms are pending for a specified calendar, and display the
* pending alarms.
*/
void AlarmDaemon::checkAlarms(ADCalendar* cal)
{
kdDebug(5901) << "AlarmDaemons::checkAlarms(" << cal->urlString() << ")" << endl;
if (!cal->loaded() || !cal->enabled())
return;
TQDateTime now = TQDateTime::tqcurrentDateTime();
kdDebug(5901) << " To: " << now.toString() << endl;
TQValueList<KCal::Alarm*> alarms = cal->alarmsTo(now);
if (!alarms.count())
return;
TQValueList<KCal::Event*> eventsDone;
for (TQValueList<KCal::Alarm*>::ConstIterator it = alarms.begin(); it != alarms.end(); ++it)
{
KCal::Event* event = dynamic_cast<KCal::Event*>((*it)->parent());
if (!event || eventsDone.find(event) != eventsDone.end())
continue; // either not an event, or the event has already been processed
eventsDone += event;
const TQString& eventID = event->uid();
kdDebug(5901) << "AlarmDaemon::checkAlarms(): event " << eventID << endl;
// Check which of the alarms for this event are due.
// The times in 'alarmtimes' corresponding to due alarms are set.
// The times for non-due alarms are set invalid in 'alarmtimes'.
bool recurs = event->doesRecur();
const TQStringList cats = event->categories();
bool floats = (cats.find(TQString::tqfromLatin1("DATE")) != cats.end());
TQDateTime nextDateTime = event->dtStart();
if (recurs)
{
TQString prop = event->customProperty("KALARM", "NEXTRECUR");
if (prop.length() >= 8)
{
// The next due recurrence time is specified
TQDate d(prop.left(4).toInt(), prop.mid(4,2).toInt(), prop.mid(6,2).toInt());
if (d.isValid())
{
if (floats && prop.length() == 8)
nextDateTime = d;
else if (!floats && prop.length() == 15 && prop[8] == TQChar('T'))
{
TQTime t(prop.mid(9,2).toInt(), prop.mid(11,2).toInt(), prop.mid(13,2).toInt());
if (t.isValid())
nextDateTime = TQDateTime(d, t);
}
}
}
}
if (floats)
nextDateTime.setTime(mStartOfDay);
TQValueList<TQDateTime> alarmtimes;
KCal::Alarm::List alarms = event->alarms();
for (KCal::Alarm::List::ConstIterator al = alarms.begin(); al != alarms.end(); ++al)
{
KCal::Alarm* alarm = *al;
TQDateTime dt;
if (alarm->enabled())
{
TQDateTime dt1;
if (!alarm->hasTime())
{
// Find the latest recurrence for the alarm.
// Need to do this for alarms with offsets in order to detect
// reminders due for recurrences.
int offset = alarm->hasStartOffset() ? alarm->startOffset().asSeconds()
: alarm->endOffset().asSeconds() + event->dtStart().secsTo(event->dtEnd());
if (offset)
{
dt1 = nextDateTime.addSecs(floats ? (offset/SECS_PER_DAY)*SECS_PER_DAY : offset);
if (dt1 > now)
dt1 = TQDateTime();
}
}
// Get latest due repetition, or the recurrence time if none
dt = nextDateTime;
if (nextDateTime <= now && alarm->repeatCount() > 0)
{
int snoozeSecs = alarm->snoozeTime() * 60;
int offset = alarm->repeatCount() * snoozeSecs;
TQDateTime lastRepetition = nextDateTime.addSecs(floats ? (offset/SECS_PER_DAY)*SECS_PER_DAY : offset);
if (lastRepetition <= now)
dt = lastRepetition;
else
{
int repetition = nextDateTime.secsTo(now) / snoozeSecs;
int offset = repetition * snoozeSecs;
dt = nextDateTime.addSecs(floats ? (offset/SECS_PER_DAY)*SECS_PER_DAY : offset);
}
}
if (!dt.isValid() || dt > now
|| dt1.isValid() && dt1 > dt) // already tested dt1 <= now
dt = dt1;
}
alarmtimes.append(dt);
}
if (!cal->eventHandled(event, alarmtimes))
{
if (notifyEvent(cal, eventID))
cal->setEventPending(event, alarmtimes);
}
}
}
/******************************************************************************
* Send a DCOP message to KAlarm telling it that an alarm should now be handled.
* Reply = false if the event should be held pending until KAlarm can be started.
*/
bool AlarmDaemon::notifyEvent(ADCalendar* calendar, const TQString& eventID)
{
if (!calendar)
return true;
TQCString appname = calendar->appName();
const ClientInfo* client = ClientInfo::get(appname);
if (!client)
{
kdDebug(5900) << "AlarmDaemon::notifyEvent(" << appname << "): unknown client" << endl;
return false;
}
kdDebug(5900) << "AlarmDaemon::notifyEvent(" << appname << ", " << eventID << "): notification type=" << client->startClient() << endl;
TQString id = TQString::tqfromLatin1("ad:") + eventID; // prefix to indicate that the notification if from the daemon
// Check if the client application is running and ready to receive notification
bool registered = kapp->dcopClient()->isApplicationRegistered(static_cast<const char*>(appname));
bool ready = registered;
if (registered)
{
// It's running, but check if it has created our DCOP interface yet
QCStringList objects = kapp->dcopClient()->remoteObjects(appname);
if (objects.find(client->dcopObject()) == objects.end())
ready = false;
}
if (!ready)
{
// KAlarm is not running, or is not yet ready to receive notifications.
if (!client->startClient())
{
if (registered)
kdDebug(5900) << "AlarmDaemon::notifyEvent(): client not ready\n";
else
kdDebug(5900) << "AlarmDaemon::notifyEvent(): don't start client\n";
return false;
}
// Start KAlarm, using the command line to specify the alarm
KProcess p;
TQString cmd = locate("exe", appname);
if (cmd.isEmpty())
{
kdDebug(5900) << "AlarmDaemon::notifyEvent(): '" << appname << "' not found" << endl;
return true;
}
p << cmd;
p << "--handleEvent" << id << "--calendarURL" << calendar->urlString();
p.start(KProcess::DontCare);
kdDebug(5900) << "AlarmDaemon::notifyEvent(): used command line" << endl;
return true;
}
// Notify the client by telling it the calendar URL and event ID
AlarmGuiIface_stub stub(appname, client->dcopObject());
stub.handleEvent(calendar->urlString(), id);
if (!stub.ok())
{
kdDebug(5900) << "AlarmDaemon::notifyEvent(): dcop send failed" << endl;
return false;
}
return true;
}
/******************************************************************************
* Starts or stops the alarm timer as necessary after a calendar is enabled/disabled.
*/
void AlarmDaemon::setTimerStatus()
{
#ifdef AUTOSTART_KALARM
if (!mAlarmTimer)
{
// KAlarm is now running, so start monitoring alarms
startMonitoring();
return; // startMonitoring() calls this method
}
#endif
// Count the number of currently loaded calendars whose names should be displayed
int nLoaded = 0;
for (ADCalendar::ConstIterator it = ADCalendar::begin(); it != ADCalendar::end(); ++it)
if ((*it)->loaded())
++nLoaded;
// Start or stop the alarm timer if necessary
if (!mAlarmTimer->isActive() && nLoaded)
{
// Timeout every minute.
// But first synchronise to one second after the minute boundary.
int firstInterval = DAEMON_CHECK_INTERVAL + 1 - TQTime::currentTime().second();
mAlarmTimer->start(1000 * firstInterval);
mAlarmTimerSyncing = (firstInterval != DAEMON_CHECK_INTERVAL);
kdDebug(5900) << "Started alarm timer" << endl;
}
else if (mAlarmTimer->isActive() && !nLoaded)
{
mAlarmTimer->stop();
kdDebug(5900) << "Stopped alarm timer" << endl;
}
}
/******************************************************************************
* Send a DCOP message to to the client which owns the specified calendar,
* notifying it of a change in calendar status.
*/
void AlarmDaemon::notifyCalStatus(const ADCalendar* cal)
{
ClientInfo* client = ClientInfo::get(cal);
if (!client)
return;
TQCString appname = client->appName();
if (kapp->dcopClient()->isApplicationRegistered(static_cast<const char*>(appname)))
{
KAlarmd::CalendarStatus change = cal->available() ? (cal->enabled() ? KAlarmd::CALENDAR_ENABLED : KAlarmd::CALENDAR_DISABLED)
: KAlarmd::CALENDAR_UNAVAILABLE;
kdDebug(5900) << "AlarmDaemon::notifyCalStatus() sending:" << appname << " -> " << change << endl;
AlarmGuiIface_stub stub(appname, client->dcopObject());
stub.alarmDaemonUpdate(change, cal->urlString());
if (!stub.ok())
kdError(5900) << "AlarmDaemon::notifyCalStatus(): dcop send failed:" << appname << endl;
}
}
/******************************************************************************
* Read all relevant items from KAlarm config.
* Executed on DCOP call to notify a time related value change in the KAlarm
* config file.
*/
void AlarmDaemon::readKAlarmConfig()
{
KConfig config(locate("config", "kalarmrc"));
config.setGroup(TQString::tqfromLatin1("General"));
TQDateTime defTime(TQDate(1900,1,1), TQTime());
mStartOfDay = config.readDateTimeEntry(START_OF_DAY, &defTime).time();
kdDebug(5900) << "AlarmDaemon::readKAlarmConfig()" << endl;
}
/******************************************************************************
* Expand a DCOP call parameter URL to a full URL.
* (We must store full URLs in the calendar data since otherwise later calls to
* reload or remove calendars won't necessarily find a match.)
*/
TQString AlarmDaemon::expandURL(const TQString& urlString)
{
if (urlString.isEmpty())
return TQString();
return KURL(urlString).url();
}