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tdepim/tderesources/caldav/resource.cpp

1012 lines
33 KiB

/*=========================================================================
| KCalDAV
|--------------------------------------------------------------------------
| (c) 2010 Timothy Pearson
| (c) 2009 Kumaran Santhanam (initial KDE4 version)
|
| This project is released under the GNU General Public License.
| Please see the file COPYING for more details.
|--------------------------------------------------------------------------
| Main interface to the KResource system.
========================================================================*/
/*=========================================================================
| INCLUDES
========================================================================*/
#include <string.h>
#include <unistd.h>
#include <tqurl.h>
#include <tqmessagebox.h>
#include <tqapplication.h>
#include <tqeventloop.h>
#include <libkcal/calendarlocal.h>
#include <libkcal/icalformat.h>
#include <tdelocale.h>
#include <kpassdlg.h>
#include <tqdatetime.h>
#include <tqmutex.h>
#include <tqthread.h>
#ifdef KCALDAV_DEBUG
#include <tqfile.h>
#endif
#include "resource.h"
#include "reader.h"
#include "writer.h"
/*=========================================================================
| NAMESPACE
========================================================================*/
using namespace KCal;
/*=========================================================================
| CONSTANTS
========================================================================*/
const unsigned long ResourceCalDav::TERMINATION_WAITING_TIME = 3 * 1000; // 3 seconds
const int ResourceCalDav::CACHE_DAYS = 90;
const int ResourceCalDav::DEFAULT_RELOAD_INTERVAL = 10;
const int ResourceCalDav::DEFAULT_SAVE_INTERVAL = 10;
const int ResourceCalDav::DEFAULT_RELOAD_POLICY = ResourceCached::ReloadInterval;
const int ResourceCalDav::DEFAULT_SAVE_POLICY = ResourceCached::SaveDelayed;
/*=========================================================================
| UTILITY
========================================================================*/
#define log(s) kdDebug() << identifier() << ": " << (s) << '\n';
/*=========================================================================
| CONSTRUCTOR / DESTRUCTOR
========================================================================*/
ResourceCalDav::ResourceCalDav( const TDEConfig *config ) :
ResourceCached(config)
, readLockout(false)
, mAllWritesComplete(false)
, mLock(true)
, mPrefs(NULL)
, mLoader(NULL)
, mWriter(NULL)
, mProgress(NULL)
, mLoadingQueueReady(true)
, mWritingQueueReady(true)
, mWriteRetryTimer(NULL)
{
log("ResourceCalDav(config)");
init();
if ( config ) {
readConfig( config );
}
}
ResourceCalDav::~ResourceCalDav() {
log("jobs termination");
if (mWriteRetryTimer != NULL) {
mWriteRetryTimer->stop(); // Unfortunately we cannot do anything at this point; if this timer is still running something is seriously wrong
}
if (mLoader) {
readLockout = true;
mLoader->terminate();
mLoader->wait(TERMINATION_WAITING_TIME);
mLoadingQueueReady = true;
}
while ((mWriter->running() == true) || (mWritingQueue.isEmpty() == false) || !mWritingQueueReady) {
readLockout = true;
sleep(1);
tqApp->processEvents(TQEventLoop::ExcludeUserInput);
}
if (mWriter) {
mWriter->terminate();
}
log("waiting for jobs terminated");
if (mLoader) {
mLoader->wait(TERMINATION_WAITING_TIME);
}
if (mWriter) {
mWriter->wait(TERMINATION_WAITING_TIME);
}
log("deleting jobs");
delete mLoader;
delete mWriter;
log("deleting preferences");
delete mPrefs;
}
bool ResourceCalDav::isSaving() {
doSave();
return (((mWriteRetryTimer != NULL) ? 1 : 0) || (mWriter->running() == true) || (mWritingQueue.isEmpty() == false) || !mWritingQueueReady || readLockout);
}
/*=========================================================================
| GENERAL METHODS
========================================================================*/
bool ResourceCalDav::doLoad() {
bool syncCache = true;
if ((mLoadingQueueReady == false) || (mLoadingQueue.isEmpty() == false) || (mLoader->running() == true) || (isSaving() == true)) {
return true; // Silently fail; the user has obviously not responded to a dialog and we don't need to pop up more of them!
}
log(TQString("doLoad(%1)").arg(syncCache));
clearCache();
log("loading from cache");
disableChangeNotification();
loadCache();
enableChangeNotification();
clearChanges(); // TODO: Determine if this really needs to be here, as it might clear out the calendar prematurely causing user confusion while the download process is running
emit resourceChanged(this);
emit resourceLoaded(this);
log("starting download job");
startLoading(mPrefs->getFullUrl(), mPrefs->getFullTasksUrl(), mPrefs->getFullJournalsUrl());
return true;
}
bool ResourceCalDav::doSave() {
bool syncCache = true;
log(TQString("doSave(%1)").arg(syncCache));
if (!hasChanges()) {
log("no changes");
return true;
}
log("saving cache");
saveCache();
// Delete any queued read jobs
mLoadingQueue.clear();
// See if there is a running read thread and terminate it
if (mLoader->running() == true) {
mLoader->terminate();
mLoader->wait(TERMINATION_WAITING_TIME);
mLoadingQueueReady = true;
}
log("start writing job");
if (startWriting(mPrefs->getFullUrl(), mPrefs->getFullTasksUrl(), mPrefs->getFullJournalsUrl()) == true) {
log("clearing changes");
// FIXME: Calling clearChanges() here is not the ideal way since the
// upload might fail, but there is no other place to call it...
clearChanges();
if (mWriteRetryTimer != NULL) {
if (mWriteRetryTimer->isActive() == false) {
disconnect( mWriteRetryTimer, TQ_SIGNAL(timeout()), this, TQ_SLOT(doSave()) );
delete mWriteRetryTimer;
mWriteRetryTimer = NULL;
}
}
return true;
}
else return true; // We do not need to alert the user to this transient failure; a timer has been started to retry the save
}
TDEABC::Lock* ResourceCalDav::lock() {
log("lock()");
return &mLock;
}
void ResourceCalDav::readConfig( const TDEConfig *config ) {
log("readConfig");
mPrefs->readConfig();
ResourceCached::readConfig(config);
}
void ResourceCalDav::writeConfig( TDEConfig *config ) {
log("writeConfig()");
ResourceCalendar::writeConfig(config);
mPrefs->writeConfig();
ResourceCached::writeConfig(config);
}
CalDavPrefs* ResourceCalDav::createPrefs() const {
log("createPrefs()");
CalDavPrefs* p = new CalDavPrefs(identifier());
return p;
}
void ResourceCalDav::init() {
// default settings
setReloadInterval(DEFAULT_RELOAD_INTERVAL);
setReloadPolicy(DEFAULT_RELOAD_POLICY);
setSaveInterval(DEFAULT_SAVE_INTERVAL);
setSavePolicy(DEFAULT_SAVE_POLICY);
// creating preferences
mPrefs = createPrefs();
// creating reader/writer instances
mLoader = new CalDavReader;
mWriter = new CalDavWriter;
// creating jobs
// TQt4 handles this quite differently, as shown below,
// whereas TQt3 needs events (see ::event())
// connect(mLoader, TQ_SIGNAL(finished()), this, TQ_SLOT(loadFinished()));
// connect(mWriter, TQ_SIGNAL(finished()), this, TQ_SLOT(writingFinished()));
setType("ResourceCalDav");
}
void ResourceCalDav::setIncidencesReadOnly(Incidence::List& inc, bool readOnly) {
Incidence::List::Iterator it;
for ( it = inc.begin(); it != inc.end(); ++it ) {
(*it)->setReadOnly( readOnly );
}
}
void ResourceCalDav::ensureReadOnlyFlagHonored() {
//disableChangeNotification();
Incidence::List inc( rawIncidences() );
setIncidencesReadOnly(inc, readOnly());
//enableChangeNotification();
emit resourceChanged(this);
}
void ResourceCalDav::setReadOnly(bool v) {
KRES::Resource::setReadOnly(v);
log("ensuring read only flag honored");
ensureReadOnlyFlagHonored();
}
void ResourceCalDav::updateProgressBar(int direction) {
int current_queued_events;
static int original_queued_events;
// See if anything is in the queues
current_queued_events = mWritingQueue.count() + mLoadingQueue.count();
if ((direction == 0) && (mLoader->running() == true)) current_queued_events++;
if ((direction == 1) && (mWriter->running() == true)) current_queued_events++;
if (current_queued_events > original_queued_events) {
original_queued_events = current_queued_events;
}
if (current_queued_events == 0) {
if ( mProgress != NULL) {
mProgress->setComplete();
mProgress = NULL;
original_queued_events = 0;
}
}
else {
if (mProgress == NULL) {
if (direction == 0) mProgress = KPIM::ProgressManager::createProgressItem(KPIM::ProgressManager::getUniqueID(), i18n("Downloading Calendar") );
if (direction == 1) mProgress = KPIM::ProgressManager::createProgressItem(KPIM::ProgressManager::getUniqueID(), i18n("Uploading Calendar") );
}
mProgress->setProgress( ((((float)original_queued_events-(float)current_queued_events)*100)/(float)original_queued_events) );
}
}
/*=========================================================================
| READING METHODS
========================================================================*/
void ResourceCalDav::loadingQueuePush(const LoadingTask *task) {
if ((mLoadingQueue.isEmpty() == true) && (mLoader->running() == false)) {
mLoadingQueue.enqueue(task);
updateProgressBar(0);
loadingQueuePop();
}
}
void ResourceCalDav::loadingQueuePop() {
if (!mLoadingQueueReady || mLoadingQueue.isEmpty() || (isSaving() == true)) {
return;
}
if (!mLoader) {
log("loader == NULL");
return;
}
// Loading queue and mLoadingQueueReady flag are not shared resources, i.e. only one thread has an access to them.
// That's why no mutexes are required.
LoadingTask *t = mLoadingQueue.head();
mLoader->setUrl(t->url);
mLoader->setTasksUrl(t->tasksUrl);
mLoader->setJournalsUrl(t->journalsUrl);
mLoader->setParent(this);
mLoader->setType(0);
TQDateTime dt(TQDate::currentDate());
mLoader->setRange(dt.addDays(-CACHE_DAYS), dt.addDays(CACHE_DAYS));
//mLoader->setGetAll();
mLoadingQueueReady = false;
log("starting actual download job");
mLoader->start(TQThread::LowestPriority);
// if all ok, removing the task from the queue
mLoadingQueue.dequeue();
updateProgressBar(0);
delete t;
}
void ResourceCalDav::startLoading(const TQString& url, const TQString& tasksUrl, const TQString& journalsUrl) {
LoadingTask *t = new LoadingTask;
t->url = url;
t->tasksUrl = tasksUrl;
t->journalsUrl = journalsUrl;
loadingQueuePush(t);
}
void ResourceCalDav::loadFinished() {
CalDavReader* loader = mLoader;
log("load finished");
if (!loader) {
log("loader is NULL");
return;
}
if (loader->error()) {
if (loader->errorNumber() == -401) {
if (NULL != mPrefs) {
TQString newpass;
if (KPasswordDialog::getPassword (newpass, TQString("<b>") + i18n("Remote authorization required") + TQString("</b><p>") + i18n("Please input the password for") + TQString(" ") + mPrefs->getusername(), NULL) != 1) {
log("load error: " + loader->errorString() );
loadError(TQString("[%1] ").arg(abs(loader->errorNumber())) + loader->errorString());
}
else {
// Set new password and try again
mPrefs->setPassword(newpass);
startLoading(mPrefs->getFullUrl(), mPrefs->getFullTasksUrl(), mPrefs->getFullJournalsUrl());
}
}
else {
log("load error: " + loader->errorString() );
loadError(TQString("[%1] ").arg(abs(loader->errorNumber())) + loader->errorString());
}
}
else {
log("load error: " + loader->errorString() );
loadError(TQString("[%1] ").arg(abs(loader->errorNumber())) + loader->errorString());
}
} else {
log("successful event load");
TQString data = loader->data();
if (!data.isNull() && !data.isEmpty()) {
// TODO: I don't know why, but some schedules on http://caldav-test.ioda.net/ (I used it for testing)
// have some lines separated by single \r rather than \n or \r\n.
// ICalFormat fails to parse that.
data.replace("\r\n", "\n"); // to avoid \r\n becomes \n\n after the next line
data.replace('\r', '\n');
log("trying to parse...");
if (parseData(data)) {
// FIXME: The agenda view can crash when a change is
// made on a remote server and a reload is requested!
log("... parsing is ok");
log("clearing changes");
enableChangeNotification();
clearChanges();
emit resourceChanged(this);
emit resourceLoaded(this);
}
}
}
if (loader->tasksError()) {
if (loader->tasksErrorNumber() == -401) {
if (NULL != mPrefs) {
// TQString newpass;
// if (KPasswordDialog::getPassword (newpass, TQString("<b>") + i18n("Remote authorization required") + TQString("</b><p>") + i18n("Please input the password for") + TQString(" ") + mPrefs->getusername(), NULL) != 1) {
// log("load error: " + loader->tasksErrorString() );
// loadError(TQString("[%1] ").arg(abs(loader->tasksErrorNumber())) + loader->tasksErrorString());
// }
// else {
// // Set new password and try again
// mPrefs->setPassword(newpass);
// startLoading(mPrefs->getFullUrl(), mPrefs->getFullTasksUrl(), mPrefs->getFullJournalsUrl());
// }
}
else {
log("load error: " + loader->tasksErrorString() );
loadError(TQString("[%1] ").arg(abs(loader->tasksErrorNumber())) + loader->tasksErrorString());
}
}
else {
log("load error: " + loader->tasksErrorString() );
loadError(TQString("[%1] ").arg(abs(loader->tasksErrorNumber())) + loader->tasksErrorString());
}
} else {
log("successful tasks load");
TQString tasksData = loader->tasksData();
if (!tasksData.isNull() && !tasksData.isEmpty()) {
// TODO: I don't know why, but some schedules on http://caldav-test.ioda.net/ (I used it for testing)
// have some lines separated by single \r rather than \n or \r\n.
// ICalFormat fails to parse that.
tasksData.replace("\r\n", "\n"); // to avoid \r\n becomes \n\n after the next line
tasksData.replace('\r', '\n');
log("trying to parse...");
if (parseTasksData(tasksData)) {
// FIXME: The agenda view can crash when a change is
// made on a remote server and a reload is requested!
log("... parsing is ok");
log("clearing changes");
enableChangeNotification();
clearChanges();
emit resourceChanged(this);
emit resourceLoaded(this);
}
}
}
if (loader->journalsError()) {
if (loader->journalsErrorNumber() == -401) {
if (NULL != mPrefs) {
// TQString newpass;
// if (KPasswordDialog::getPassword (newpass, TQString("<b>") + i18n("Remote authorization required") + TQString("</b><p>") + i18n("Please input the password for") + TQString(" ") + mPrefs->getusername(), NULL) != 1) {
// log("load error: " + loader->journalsErrorString() );
// loadError(TQString("[%1] ").arg(abs(loader->journalsErrorNumber())) + loader->journalsErrorString());
// }
// else {
// // Set new password and try again
// mPrefs->setPassword(newpass);
// startLoading(mPrefs->getFullUrl(), mPrefs->getFullTasksUrl(), mPrefs->getFullJournalsUrl());
// }
}
else {
log("load error: " + loader->journalsErrorString() );
loadError(TQString("[%1] ").arg(abs(loader->journalsErrorNumber())) + loader->journalsErrorString());
}
}
else {
log("load error: " + loader->journalsErrorString() );
loadError(TQString("[%1] ").arg(abs(loader->journalsErrorNumber())) + loader->journalsErrorString());
}
} else {
log("successful journals load");
TQString journalsData = loader->journalsData();
if (!journalsData.isNull() && !journalsData.isEmpty()) {
// TODO: I don't know why, but some schedules on http://caldav-test.ioda.net/ (I used it for testing)
// have some lines separated by single \r rather than \n or \r\n.
// ICalFormat fails to parse that.
journalsData.replace("\r\n", "\n"); // to avoid \r\n becomes \n\n after the next line
journalsData.replace('\r', '\n');
log("trying to parse...");
if (parseJournalsData(journalsData)) {
// FIXME: The agenda view can crash when a change is
// made on a remote server and a reload is requested!
log("... parsing is ok");
log("clearing changes");
enableChangeNotification();
clearChanges();
emit resourceChanged(this);
emit resourceLoaded(this);
}
}
}
// Loading queue and mLoadingQueueReady flag are not shared resources, i.e. only one thread has an access to them.
// That's why no mutexes are required.
mLoader->terminate();
mLoader->wait(TERMINATION_WAITING_TIME);
mLoadingQueueReady = true;
updateProgressBar(0);
loadingQueuePop();
}
bool ResourceCalDav::checkData(const TQString& data) {
log("checking the data");
ICalFormat ical;
bool ret = true;
if (!ical.fromString(&mCalendar, data)) {
log("invalid ical string");
ret = false;
}
return ret;
}
bool ResourceCalDav::parseData(const TQString& data) {
log("parseData()");
bool ret = true;
// check if the data is OK
// May be it's not efficient (parsing is done twice), but it should be safe
if (!checkData(data)) {
loadError(i18n("Parsing calendar data failed."));
return false;
}
log("clearing cache");
clearEventsCache();
disableChangeNotification();
log("actually parsing the data");
ICalFormat ical;
if ( !ical.fromString( &mCalendar, data ) ) {
// this should never happen, but...
ret = false;
}
// debug code here -------------------------------------------------------
#ifdef KCALDAV_DEBUG
const TQString fout_path = "/tmp/kcaldav_download_" + identifier() + ".tmp";
TQFile fout(fout_path);
if (fout.open(IO_WriteOnly | IO_Append)) {
TQTextStream sout(&fout);
sout << "---------- " << resourceName() << ": --------------------------------\n";
sout << data << "\n";
fout.close();
} else {
loadError(i18n("can't open file"));
}
#endif // KCALDAV_DEBUG
// end of debug code ----------------------------------------------------
enableChangeNotification();
if (ret) {
log("parsing is ok");
//if ( !noReadOnlyOnLoad() && readOnly() ) {
if ( readOnly() ) {
log("ensuring read only flag honored");
ensureReadOnlyFlagHonored();
}
log("saving to cache");
saveCache();
}
return ret;
}
bool ResourceCalDav::parseTasksData(const TQString& data) {
log("parseTasksData()");
bool ret = true;
// check if the data is OK
// May be it's not efficient (parsing is done twice), but it should be safe
if (!checkData(data)) {
loadError(i18n("Parsing calendar data failed."));
return false;
}
log("clearing cache");
clearTodosCache();
disableChangeNotification();
log("actually parsing the data");
ICalFormat ical;
if ( !ical.fromString( &mCalendar, data ) ) {
// this should never happen, but...
ret = false;
}
// debug code here -------------------------------------------------------
#ifdef KCALDAV_DEBUG
const TQString fout_path = "/tmp/kcaldav_download_" + identifier() + ".tmp";
TQFile fout(fout_path);
if (fout.open(IO_WriteOnly | IO_Append)) {
TQTextStream sout(&fout);
sout << "---------- " << resourceName() << ": --------------------------------\n";
sout << data << "\n";
fout.close();
} else {
loadError(i18n("can't open file"));
}
#endif // KCALDAV_DEBUG
// end of debug code ----------------------------------------------------
enableChangeNotification();
if (ret) {
log("parsing is ok");
//if ( !noReadOnlyOnLoad() && readOnly() ) {
if ( readOnly() ) {
log("ensuring read only flag honored");
ensureReadOnlyFlagHonored();
}
log("saving to cache");
saveCache();
}
return ret;
}
bool ResourceCalDav::parseJournalsData(const TQString& data) {
log("parseJournalsData()");
bool ret = true;
// check if the data is OK
// May be it's not efficient (parsing is done twice), but it should be safe
if (!checkData(data)) {
loadError(i18n("Parsing calendar data failed."));
return false;
}
log("clearing cache");
clearJournalsCache();
disableChangeNotification();
log("actually parsing the data");
ICalFormat ical;
if ( !ical.fromString( &mCalendar, data ) ) {
// this should never happen, but...
ret = false;
}
// debug code here -------------------------------------------------------
#ifdef KCALDAV_DEBUG
const TQString fout_path = "/tmp/kcaldav_download_" + identifier() + ".tmp";
TQFile fout(fout_path);
if (fout.open(IO_WriteOnly | IO_Append)) {
TQTextStream sout(&fout);
sout << "---------- " << resourceName() << ": --------------------------------\n";
sout << data << "\n";
fout.close();
} else {
loadError(i18n("can't open file"));
}
#endif // KCALDAV_DEBUG
// end of debug code ----------------------------------------------------
enableChangeNotification();
if (ret) {
log("parsing is ok");
//if ( !noReadOnlyOnLoad() && readOnly() ) {
if ( readOnly() ) {
log("ensuring read only flag honored");
ensureReadOnlyFlagHonored();
}
log("saving to cache");
saveCache();
}
return ret;
}
/*=========================================================================
| WRITING METHODS
========================================================================*/
TQString ResourceCalDav::getICalString(const Incidence::List& inc) {
if (inc.isEmpty()) {
return "";
}
CalendarLocal loc(timeZoneId());
TQString data = "";
TQString header = "";
TQString footer = "";
ICalFormat ical;
// Get the iCal header and footer
header = ical.toString(&loc);
int location = header.find("END:VCALENDAR", 0, true);
footer = header.mid(location, 0xffffffff);
header.remove("END:VCALENDAR");
data = data + header;
// NOTE: This is very susceptible to invalid entries in added/changed/deletedIncidences
// Be very careful with clearChange/clearChanges, and be sure to clear after load and save...
for(Incidence::List::ConstIterator it = inc.constBegin(); it != inc.constEnd(); ++it) {
Incidence *i = (*it)->clone();
data = data + ical.toString(i, &mCalendar);
}
data = data + footer;
// Remove any line feeds/carriage returns/white spaces from the UID field as they WILL break libcaldav
int uidPos = data.find("UID:", 0) + 4;
int nextPos = data.findRev("\n", data.find(":", uidPos));
TQString uidField = data.mid(uidPos, nextPos-uidPos);
data.remove(uidPos, nextPos-uidPos);
uidField.replace("\n", "");
uidField.replace("\r", "");
uidField.replace(" ", "");
data.insert(uidPos, uidField);
return data;
}
void ResourceCalDav::writingQueuePush(const WritingTask *task) {
// printf("task->added: %s\n", task->added.ascii());
// printf("task->deleted: %s\n", task->deleted.ascii());
// printf("task->changed: %s\n", task->changed.ascii());
mWritingQueue.enqueue(task);
updateProgressBar(1);
writingQueuePop();
}
void ResourceCalDav::writingQueuePop() {
if (!mWritingQueueReady || mWritingQueue.isEmpty()) {
return;
}
if (!mWriter) {
log("writer == NULL");
return;
}
// Writing queue and mWritingQueueReady flag are not shared resources, i.e. only one thread has an access to them.
// That's why no mutexes are required.
WritingTask *t = mWritingQueue.head();
log("writingQueuePop: url = " + t->url);
mWriter->setUrl(t->url);
mWriter->setTasksUrl(t->tasksUrl);
mWriter->setJournalsUrl(t->journalsUrl);
mWriter->setParent(this);
mWriter->setType(1);
#ifdef KCALDAV_DEBUG
const TQString fout_path = "/tmp/kcaldav_upload_" + identifier() + ".tmp";
TQFile fout(fout_path);
if (fout.open(IO_WriteOnly | IO_Append)) {
TQTextStream sout(&fout);
sout << "---------- " << resourceName() << ": --------------------------------\n";
sout << "================== Added:\n" << t->added << "\n";
sout << "================== Changed:\n" << t->changed << "\n";
sout << "================== Deleted:\n" << t->deleted << "\n";
fout.close();
} else {
loadError(i18n("can't open file"));
}
#endif // debug
mWriter->setAddedObjects(t->added);
mWriter->setChangedObjects(t->changed);
mWriter->setDeletedObjects(t->deleted);
mWriter->setAddedTasksObjects(t->tasksAdded);
mWriter->setChangedTasksObjects(t->tasksChanged);
mWriter->setDeletedTasksObjects(t->tasksDeleted);
mWriter->setAddedJournalsObjects(t->journalsAdded);
mWriter->setChangedJournalsObjects(t->journalsChanged);
mWriter->setDeletedJournalsObjects(t->journalsDeleted);
mWritingQueueReady = false;
log("starting actual write job");
mWriter->start(TQThread::LowestPriority);
// if all ok, remove the task from the queue
mWritingQueue.dequeue();
updateProgressBar(1);
delete t;
}
bool ResourceCalDav::event ( TQEvent * e ) {
if (e->type() == 1000) {
// Read done
loadFinished();
return TRUE;
}
else if (e->type() == 1001) {
// Write done
writingFinished();
return TRUE;
}
else return FALSE;
}
void ResourceCalDav::releaseReadLockout() {
readLockout = false;
}
bool ResourceCalDav::startWriting(const TQString& url, const TQString& tasksUrl, const TQString& journalsUrl) {
log("startWriting: url = " + url);
// WARNING: This will segfault if a separate read or write thread
// modifies the calendar with clearChanges() or similar
// Before these calls are made any existing read (and maybe write) threads should be finished
if ((mLoader->running() == true) || (mLoadingQueue.isEmpty() == false) || (mWriter->running() == true) || (mWritingQueue.isEmpty() == false)) {
if (mWriteRetryTimer == NULL) {
mWriteRetryTimer = new TQTimer(this);
connect( mWriteRetryTimer, TQ_SIGNAL(timeout()), TQ_SLOT(doSave()) );
}
mWriteRetryTimer->start(1000, TRUE);
return false;
}
// If we don't lock the read out for a few seconds, it would be possible for the old calendar to be
// downloaded before our changes are committed, presenting a very bad image to the user as his/her appointments
// revert to the state they were in before the write (albiet temporarily)
readLockout = true;
// This needs to send each event separately; i.e. if two events were added they need
// to be extracted and pushed on the stack independently (using two calls to writingQueuePush())
Incidence::List added = addedIncidences();
Incidence::List changed = changedIncidences();
Incidence::List deleted = deletedIncidences();
Incidence::List::ConstIterator it;
Incidence::List currentIncidence;
for( it = added.begin(); it != added.end(); ++it ) {
WritingTask *t = new WritingTask;
currentIncidence.clear();
currentIncidence.append(*it);
t->url = url;
t->tasksUrl = tasksUrl;
t->journalsUrl = journalsUrl;
t->added = "";
t->changed = "";
t->deleted = "";
t->tasksAdded = "";
t->tasksChanged = "";
t->tasksDeleted = "";
t->journalsAdded = "";
t->journalsChanged = "";
t->journalsDeleted = "";
if (getICalString(currentIncidence).contains("BEGIN:VEVENT") > 0)
t->added = getICalString(currentIncidence);
else if (getICalString(currentIncidence).contains("BEGIN:VTODO") > 0)
t->tasksAdded = getICalString(currentIncidence);
else if (getICalString(currentIncidence).contains("BEGIN:VJOURNAL") > 0)
t->journalsAdded = getICalString(currentIncidence);
writingQueuePush(t);
}
for( it = changed.begin(); it != changed.end(); ++it ) {
WritingTask *t = new WritingTask;
currentIncidence.clear();
currentIncidence.append(*it);
t->url = url;
t->tasksUrl = tasksUrl;
t->added = "";
t->changed = "";
t->deleted = "";
t->tasksAdded = "";
t->tasksChanged = "";
t->tasksDeleted = "";
t->journalsAdded = "";
t->journalsChanged = "";
t->journalsDeleted = "";
if (getICalString(currentIncidence).contains("BEGIN:VEVENT") > 0)
t->changed = getICalString(currentIncidence);
else if (getICalString(currentIncidence).contains("BEGIN:VTODO") > 0)
t->tasksChanged = getICalString(currentIncidence);
else if (getICalString(currentIncidence).contains("BEGIN:VJOURNAL") > 0)
t->journalsChanged = getICalString(currentIncidence);
writingQueuePush(t);
}
for( it = deleted.begin(); it != deleted.end(); ++it ) {
WritingTask *t = new WritingTask;
currentIncidence.clear();
currentIncidence.append(*it);
t->url = url;
t->tasksUrl = tasksUrl;
t->added = "";
t->changed = "";
t->deleted = "";
t->tasksAdded = "";
t->tasksChanged = "";
t->tasksDeleted = "";
t->journalsAdded = "";
t->journalsChanged = "";
t->journalsDeleted = "";
if (getICalString(currentIncidence).contains("BEGIN:VEVENT") > 0)
t->deleted = getICalString(currentIncidence);
else if (getICalString(currentIncidence).contains("BEGIN:VTODO") > 0)
t->tasksDeleted = getICalString(currentIncidence);
else if (getICalString(currentIncidence).contains("BEGIN:VJOURNALS") > 0)
t->journalsDeleted = getICalString(currentIncidence);
writingQueuePush(t);
}
return true;
}
void ResourceCalDav::writingFinished() {
log("writing finished");
if (!mWriter) {
log("mWriter is NULL");
return;
}
if (mWriter->error() && (abs(mWriter->errorNumber()) != 207)) {
if (mWriter->errorNumber() == -401) {
if (NULL != mPrefs) {
TQString newpass;
if (KPasswordDialog::getPassword (newpass, TQString("<b>") + i18n("Remote authorization required") + TQString("</b><p>") + i18n("Please input the password for") + TQString(" ") + mPrefs->getusername(), NULL) != 1) {
log("write error: " + mWriter->errorString());
saveError(TQString("[%1] ").arg(abs(mWriter->errorNumber())) + mWriter->errorString());
}
else {
// Set new password and try again
mPrefs->setPassword(newpass);
startWriting(mPrefs->getFullUrl(), mPrefs->getFullTasksUrl(), mPrefs->getFullJournalsUrl());
}
}
else {
log("write error: " + mWriter->errorString());
saveError(TQString("[%1] ").arg(abs(mWriter->errorNumber())) + mWriter->errorString());
}
}
else {
log("write error: " + mWriter->errorString());
saveError(TQString("[%1] ").arg(abs(mWriter->errorNumber())) + mWriter->errorString());
}
} else {
log("success");
// is there something to do here?
}
// Give the remote system a few seconds to process the data before we allow any read operations
TQTimer::singleShot( 3000, this, TQ_SLOT(releaseReadLockout()) );
// Writing queue and mWritingQueueReady flag are not shared resources, i.e. only one thread has an access to them.
// That's why no mutexes are required.
mWriter->terminate();
mWriter->wait(TERMINATION_WAITING_TIME);
mWritingQueueReady = true;
updateProgressBar(1);
writingQueuePop();
}
#include "resource.moc"
// EOF ========================================================================