summaryrefslogtreecommitdiffstats
path: root/tderesources/carddav/resource.cpp
blob: 9fc54692e873388f0d1bafc9893bdff1c8eb2540 (plain)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
240
241
242
243
244
245
246
247
248
249
250
251
252
253
254
255
256
257
258
259
260
261
262
263
264
265
266
267
268
269
270
271
272
273
274
275
276
277
278
279
280
281
282
283
284
285
286
287
288
289
290
291
292
293
294
295
296
297
298
299
300
301
302
303
304
305
306
307
308
309
310
311
312
313
314
315
316
317
318
319
320
321
322
323
324
325
326
327
328
329
330
331
332
333
334
335
336
337
338
339
340
341
342
343
344
345
346
347
348
349
350
351
352
353
354
355
356
357
358
359
360
361
362
363
364
365
366
367
368
369
370
371
372
373
374
375
376
377
378
379
380
381
382
383
384
385
386
387
388
389
390
391
392
393
394
395
396
397
398
399
400
401
402
403
404
405
406
407
408
409
410
411
412
413
414
415
416
417
418
419
420
421
422
423
424
425
426
427
428
429
430
431
432
433
434
435
436
437
438
439
440
441
442
443
444
445
446
447
448
449
450
451
452
453
454
455
456
457
458
459
460
461
462
463
464
465
466
467
468
469
470
471
472
473
474
475
476
477
478
479
480
481
482
483
484
485
486
487
488
489
490
491
492
493
494
495
496
497
498
499
500
501
502
503
504
505
506
507
508
509
510
511
512
513
514
515
516
517
518
519
520
521
522
523
524
525
526
527
528
529
530
531
532
533
534
535
536
537
538
539
540
541
542
543
544
545
546
547
548
549
550
551
552
553
554
555
556
557
558
559
560
561
562
563
564
565
566
567
568
569
570
571
572
573
574
575
576
577
578
579
580
581
582
583
584
585
586
587
588
589
590
591
592
593
594
595
596
597
598
599
600
601
602
603
604
605
606
607
608
609
610
611
612
613
614
615
616
617
618
619
620
621
622
623
624
625
626
627
628
629
630
631
632
633
634
635
636
637
638
639
640
641
642
643
644
645
646
647
648
649
650
651
652
653
654
655
656
657
658
659
660
661
662
663
664
665
666
667
668
669
670
671
672
673
674
675
676
677
678
679
680
681
682
683
/*=========================================================================
| 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 <unistd.h>

#include <tqurl.h>
#include <tqmessagebox.h>
#include <tqapplication.h>
#include <tqeventloop.h>

#include <tdeabc/addressee.h>
#include <tdeabc/vcardconverter.h>

#include <tdelocale.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 TDEABC;

/*=========================================================================
| 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) << '\n';

/*=========================================================================
| CONSTRUCTOR / DESTRUCTOR
 ========================================================================*/

ResourceCardDav::ResourceCardDav( 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("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();
}

TDEABC::Lock* ResourceCardDav::lock() {
    log("lock()");
    return &mLock;
}

void ResourceCardDav::readConfig( const TDEConfig *config ) {
    log("readConfig");
    mPrefs->readConfig();
    // FIXME KABC
    //ResourceCached::readConfig(config);
}

void ResourceCardDav::writeConfig( TDEConfig *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.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)) {
                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");

    TDEABC::VCardConverter converter;
    bool ret = true;
    TDEABC::VCardConverter conv;
    Addressee::List addressees = conv.parseVCards( data.utf8() );
    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");

    TDEABC::VCardConverter conv;
    Addressee::List addressees = conv.parseVCards( data.utf8() );
    Addressee::List::ConstIterator it;
    for( it = addressees.begin(); it != addressees.end(); ++it ) {
      TDEABC::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", 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 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;
    TDEABC::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;
    }

    TDEABC::Addressee::List added = addedAddressees();
    TDEABC::Addressee::List changed = changedAddressees();
    TDEABC::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 ========================================================================