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tdepim/kresources/carddav/resource.cpp

683 lines
21 KiB

/*=========================================================================
| KCardDAV
|--------------------------------------------------------------------------
| (c) 2010 Timothy Pearson
|
| 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 <tqurl.h>
#include <tqmessagebox.h>
#include <tqapplication.h>
#include <tqeventloop.h>
#include <kabc/addressee.h>
#include <kabc/vcardconverter.h>
#include <klocale.h>
#include <kpassdlg.h>
#include <tqdatetime.h>
#include <tqmutex.h>
#include <tqthread.h>
#include <tqtimer.h>
#ifdef KCARDDAV_DEBUG
#include <tqfile.h>
#endif
#include "resource.h"
#include "reader.h"
#include "writer.h"
/*=========================================================================
| NAMESPACE
========================================================================*/
using namespace KABC;
/*=========================================================================
| CONSTANTS
========================================================================*/
const unsigned long ResourceCardDav::TERMINATION_WAITING_TIME = 3 * 1000; // 3 seconds
const int ResourceCardDav::CACHE_DAYS = 90;
const int ResourceCardDav::DEFAULT_RELOAD_INTERVAL = 10;
const int ResourceCardDav::DEFAULT_SAVE_INTERVAL = 10;
const int ResourceCardDav::DEFAULT_RELOAD_POLICY = ResourceCached::ReloadInterval;
const int ResourceCardDav::DEFAULT_SAVE_POLICY = ResourceCached::SaveDelayed;
/*=========================================================================
| UTILITY
========================================================================*/
#define log(s) kdDebug() << identifier() << ": " << (s);
/*=========================================================================
| CONSTRUCTOR / DESTRUCTOR
========================================================================*/
ResourceCardDav::ResourceCardDav( const KConfig *config ) :
ResourceCached(config)
, readLockout(false)
, mAllWritesComplete(false)
, mLock(true)
, mPrefs(NULL)
, mLoader(NULL)
, mWriter(NULL)
, mProgress(NULL)
, mLoadingQueueReady(true)
, mWritingQueueReady(true)
, mWriteRetryTimer(NULL)
{
log("ResourceCardDav(config)");
init();
if ( config ) {
readConfig( config );
}
}
ResourceCardDav::~ResourceCardDav() {
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 (mWriter) {
mWriter->wait(TERMINATION_WAITING_TIME);
}
log("deleting jobs");
delete mLoader;
delete mWriter;
log("deleting preferences");
delete mPrefs;
}
bool ResourceCardDav::isSaving() {
doSave();
return (((mWriteRetryTimer != NULL) ? 1 : 0) || (mWriter->running() == true) || (mWritingQueue.isEmpty() == false) || !mWritingQueueReady || readLockout);
}
/*=========================================================================
| GENERAL METHODS
========================================================================*/
bool ResourceCardDav::load() {
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));
// FIXME KABC
//clearCache();
log("loading from cache");
//disableChangeNotification();
loadCache();
//enableChangeNotification();
clearChanges();
addressBook()->emitAddressBookChanged();
emit loadingFinished( this );
log("starting download job");
startLoading(mPrefs->getFullUrl());
return true;
}
bool ResourceCardDav::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()) == 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, TQT_SIGNAL(timeout()), this, TQT_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
}
bool ResourceCardDav::save( Ticket* ticket ) {
// To suppress warning about doSave() method hides ResourceCached::doSave(Ticket)
//return ResourceCached::doSave();
return doSave();
}
KABC::Lock* ResourceCardDav::lock() {
log("lock()");
return &mLock;
}
void ResourceCardDav::readConfig( const KConfig *config ) {
log("readConfig");
mPrefs->readConfig();
// FIXME KABC
//ResourceCached::readConfig(config);
}
void ResourceCardDav::writeConfig( KConfig *config ) {
log("writeConfig()");
Resource::writeConfig(config);
mPrefs->writeConfig();
ResourceCached::writeConfig(config);
}
CardDavPrefs* ResourceCardDav::createPrefs() const {
log("createPrefs()");
CardDavPrefs* p = new CardDavPrefs(identifier());
return p;
}
void ResourceCardDav::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 CardDavReader;
mWriter = new CardDavWriter;
// creating jobs
// TQt4 handles this quite differently, as shown below,
// whereas TQt3 needs events (see ::event())
// connect(mLoader, TQT_SIGNAL(finished()), this, TQT_SLOT(loadFinished()));
// connect(mWriter, TQT_SIGNAL(finished()), this, TQT_SLOT(writingFinished()));
setType("ResourceCardDav");
}
void ResourceCardDav::ensureReadOnlyFlagHonored() {
//disableChangeNotification();
// FIXME KABC
//Incidence::List inc( rawIncidences() );
//setIncidencesReadOnly(inc, readOnly());
//enableChangeNotification();
if (addressBook() != NULL) {
addressBook()->emitAddressBookChanged();
}
}
void ResourceCardDav::setReadOnly(bool v) {
KRES::Resource::setReadOnly(v);
log("ensuring read only flag honored");
ensureReadOnlyFlagHonored();
}
void ResourceCardDav::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 Contacts") );
if (direction == 1) mProgress = KPIM::ProgressManager::createProgressItem(KPIM::ProgressManager::getUniqueID(), i18n("Uploading Contacts") );
}
mProgress->setProgress( ((((float)original_queued_events-(float)current_queued_events)*100)/(float)original_queued_events) );
}
}
/*=========================================================================
| READING METHODS
========================================================================*/
void ResourceCardDav::loadingQueuePush(const LoadingTask *task) {
if ((mLoadingQueue.isEmpty() == true) && (mLoader->running() == false)) {
mLoadingQueue.enqueue(task);
updateProgressBar(0);
loadingQueuePop();
}
}
void ResourceCardDav::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->setParent(this);
mLoader->setType(0);
mLoader->setUseURI(mPrefs->getUseURI());
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 ResourceCardDav::startLoading(const TQString& url) {
LoadingTask *t = new LoadingTask;
t->url = url;
loadingQueuePush(t);
}
void ResourceCardDav::loadFinished() {
CardDavReader* loader = mLoader;
log("load finished");
if (!loader) {
log("loader is NULL");
return;
}
if (loader->error()) {
if (loader->errorNumber() == -401) {
if (NULL != mPrefs) {
TQCString 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() );
addressBook()->error(TQString("[%1] ").arg(abs(loader->errorNumber())) + loader->errorString());
}
else {
// Set new password and try again
mPrefs->setPassword(TQString(newpass));
startLoading(mPrefs->getFullUrl());
}
}
else {
log("load error: " + loader->errorString() );
addressBook()->error(TQString("[%1] ").arg(abs(loader->errorNumber())) + loader->errorString());
}
}
else {
log("load error: " + loader->errorString() );
addressBook()->error(TQString("[%1] ").arg(abs(loader->errorNumber())) + loader->errorString());
}
} else {
log("successful load");
TQString data = loader->data();
if (!data.isNull() && !data.isEmpty()) {
data.tqreplace("\r\n", "\n"); // to avoid \r\n becomes \n\n after the next line
data.tqreplace('\r', '\n');
log("trying to parse...");
if (parseData(data)) {
log("... parsing is ok");
log("clearing changes");
//enableChangeNotification();
clearChanges();
addressBook()->emitAddressBookChanged();
emit loadingFinished( 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 ResourceCardDav::checkData(const TQString& data) {
log("checking the data");
KABC::VCardConverter converter;
bool ret = true;
KABC::VCardConverter conv;
Addressee::List addressees = conv.parseVCards( data );
if (addressees.isEmpty() == true) {
ret = false;
}
return ret;
}
bool ResourceCardDav::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)) {
addressBook()->error(i18n("Parsing calendar data failed."));
return false;
}
// FIXME KABC
//log("clearing cache");
//clearCache();
//disableChangeNotification();
log("actually parsing the data");
KABC::VCardConverter conv;
Addressee::List addressees = conv.parseVCards( data );
Addressee::List::ConstIterator it;
for( it = addressees.begin(); it != addressees.end(); ++it ) {
KABC::Addressee addr = *it;
if ( !addr.isEmpty() ) {
addr.setResource( this );
insertAddressee( addr );
clearChange( addr );
}
}
// debug code here -------------------------------------------------------
#ifdef KCARDDAV_DEBUG
const TQString fout_path = "/tmp/kcarddav_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 {
addressBook()->error(i18n("can't open file"));
}
#endif // KCARDDAV_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("cleaning up cache");
cleanUpCache( addressees );
log("saving to cache");
saveCache();
}
return ret;
}
/*=========================================================================
| WRITING METHODS
========================================================================*/
Ticket *ResourceCardDav::requestSaveTicket()
{
if ( !addressBook() ) {
kdDebug(5700) << "no addressbook" << endl;
return 0;
}
return createTicket( this );
}
void ResourceCardDav::releaseSaveTicket( Ticket *ticket )
{
delete ticket;
}
void ResourceCardDav::writingQueuePush(const WritingTask *task) {
// printf("task->added: %s\n\r", task->added.ascii());
// printf("task->deleted: %s\n\r", task->deleted.ascii());
// printf("task->changed: %s\n\r", task->changed.ascii());
mWritingQueue.enqueue(task);
updateProgressBar(1);
writingQueuePop();
}
void ResourceCardDav::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->setParent(this);
mWriter->setType(1);
mWriter->setUseURI(mPrefs->getUseURI());
#ifdef KCARDDAV_DEBUG
const TQString fout_path = "/tmp/kcarddav_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 {
addressBook()->error(i18n("can't open file"));
}
#endif // debug
mWriter->setAddedObjects(t->added);
mWriter->setChangedObjects(t->changed);
mWriter->setDeletedObjects(t->deleted);
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 ResourceCardDav::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;
}
bool ResourceCardDav::startWriting(const TQString& url) {
log("startWriting: url = " + url);
WritingTask *t = new WritingTask;
KABC::VCardConverter converter;
// 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, TQT_SIGNAL(timeout()), TQT_SLOT(doSave()) );
}
mWriteRetryTimer->start(1000, TRUE);
return false;
}
KABC::Addressee::List added = addedAddressees();
KABC::Addressee::List changed = changedAddressees();
KABC::Addressee::List deleted = deletedAddressees();
t->url = url;
// FIXME KABC
t->added = converter.createVCards(added); // This crashes when an event is added from the remote server and save() is subsequently called
t->changed = converter.createVCards(changed);
t->deleted = converter.createVCards(deleted);
writingQueuePush(t);
return true;
}
void ResourceCardDav::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) {
TQCString 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());
addressBook()->error(TQString("[%1] ").arg(abs(mWriter->errorNumber())) + mWriter->errorString());
}
else {
// Set new password and try again
mPrefs->setPassword(TQString(newpass));
startWriting(mPrefs->getFullUrl());
}
}
else {
log("write error: " + mWriter->errorString());
addressBook()->error(TQString("[%1] ").arg(abs(mWriter->errorNumber())) + mWriter->errorString());
}
}
else {
log("write error: " + mWriter->errorString());
addressBook()->error(TQString("[%1] ").arg(abs(mWriter->errorNumber())) + mWriter->errorString());
}
} else {
log("success");
// is there something to do here?
}
// 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();
// If a URI is required we will need to retrieve it from the server after the new record is committed...
if (mPrefs->getUseURI() == true) {
startLoading(mPrefs->getFullUrl());
}
}
#include "resource.moc"
// EOF ========================================================================