summaryrefslogtreecommitdiffstats
path: root/src/libs/installer/metadatajob.cpp
blob: a8405a0e89e99eb67bf4af302f1cec05ab2dd781 (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
684
685
686
687
688
689
690
691
692
693
694
695
696
697
698
699
700
701
702
703
704
705
706
707
708
709
710
711
712
713
714
715
716
717
718
719
720
721
722
723
724
725
726
727
728
729
730
731
732
733
734
735
736
737
738
739
740
741
742
743
744
745
746
747
748
749
750
751
752
753
754
755
756
757
758
759
760
761
762
763
764
765
766
767
768
769
770
771
772
773
774
775
776
777
778
779
780
781
782
783
784
785
786
787
788
789
790
791
792
793
794
795
796
797
798
799
800
801
802
803
804
805
806
807
808
809
810
811
812
813
814
815
816
817
818
819
820
821
822
823
824
825
826
827
828
829
830
831
832
833
834
835
836
837
838
839
840
841
842
843
844
845
846
847
848
849
850
851
852
853
854
855
856
857
858
859
860
861
862
863
864
865
866
867
868
869
870
871
872
873
874
875
876
877
878
879
880
/**************************************************************************
**
** Copyright (C) 2020 The Qt Company Ltd.
** Contact: https://www.qt.io/licensing/
**
** This file is part of the Qt Installer Framework.
**
** $QT_BEGIN_LICENSE:GPL-EXCEPT$
** Commercial License Usage
** Licensees holding valid commercial Qt licenses may use this file in
** accordance with the commercial license agreement provided with the
** Software or, alternatively, in accordance with the terms contained in
** a written agreement between you and The Qt Company. For licensing terms
** and conditions see https://www.qt.io/terms-conditions. For further
** information use the contact form at https://www.qt.io/contact-us.
**
** GNU General Public License Usage
** Alternatively, this file may be used under the terms of the GNU
** General Public License version 3 as published by the Free Software
** Foundation with exceptions as appearing in the file LICENSE.GPL3-EXCEPT
** included in the packaging of this file. Please review the following
** information to ensure the GNU General Public License requirements will
** be met: https://www.gnu.org/licenses/gpl-3.0.html.
**
** $QT_END_LICENSE$
**
**************************************************************************/
#include "metadatajob.h"

#include "metadatajob_p.h"
#include "packagemanagercore.h"
#include "packagemanagerproxyfactory.h"
#include "productkeycheck.h"
#include "proxycredentialsdialog.h"
#include "serverauthenticationdialog.h"
#include "settings.h"
#include "testrepository.h"
#include "globals.h"

#include <QTemporaryDir>
#include <QtMath>
#include <QRandomGenerator>

const QStringList metaElements = {QLatin1String("Script"), QLatin1String("Licenses"), QLatin1String("UserInterfaces"), QLatin1String("Translations")};

namespace QInstaller {

/*!
    \inmodule QtInstallerFramework
    \class QInstaller::Metadata
    \internal
*/

/*!
    \inmodule QtInstallerFramework
    \class QInstaller::ArchiveMetadata
    \internal
*/

/*!
    \enum QInstaller::DownloadType

    \value All
    \value CompressedPackage
    \value UpdatesXML
*/

/*!
    \inmodule QtInstallerFramework
    \class QInstaller::MetadataJob
    \internal
*/

/*!
    \inmodule QtInstallerFramework
    \class QInstaller::UnzipArchiveTask
    \internal
*/

/*!
    \inmodule QtInstallerFramework
    \class QInstaller::UnzipArchiveException
    \internal
*/

static QUrl resolveUrl(const FileTaskResult &result, const QString &url)
{
    QUrl u(url);
    if (u.isRelative())
        return QUrl(result.taskItem().source()).resolved(u);
    return u;
}

MetadataJob::MetadataJob(QObject *parent)
    : Job(parent)
    , m_core(nullptr)
    , m_downloadType(DownloadType::All)
    , m_downloadableChunkSize(1000)
    , m_taskNumber(0)
{
    QByteArray downloadableChunkSize = qgetenv("IFW_METADATA_SIZE");
    if (!downloadableChunkSize.isEmpty()) {
        int chunkSize = QString::fromLocal8Bit(downloadableChunkSize).toInt();
        if (chunkSize > 0)
            m_downloadableChunkSize = chunkSize;
    }

    setCapabilities(Cancelable);
    connect(&m_xmlTask, &QFutureWatcherBase::finished, this, &MetadataJob::xmlTaskFinished);
    connect(&m_metadataTask, &QFutureWatcherBase::finished, this, &MetadataJob::metadataTaskFinished);
    connect(&m_metadataTask, &QFutureWatcherBase::progressValueChanged, this, &MetadataJob::progressChanged);
}

MetadataJob::~MetadataJob()
{
    resetCompressedFetch();
    reset();
}

/*
 * Parse the metadata of currently selected repositories. We cannot
 * return all metadata as that contains metadata also from categorized archived
 * repositories which might not be currently selected.
 */

QList<Metadata> MetadataJob::metadata() const
{
    QList<Metadata> metadata = m_metaFromDefaultRepositories.values();
    foreach (RepositoryCategory repositoryCategory, m_core->settings().repositoryCategories()) {
        if (m_core->isUpdater() || (repositoryCategory.isEnabled() && m_fetchedArchive.contains(repositoryCategory.displayname()))) {
            QList<ArchiveMetadata> archiveMetaList = m_fetchedArchive.values(repositoryCategory.displayname());
            foreach (ArchiveMetadata archiveMeta, archiveMetaList) {
                metadata.append(archiveMeta.metaData);
            }
        }
    }
    return metadata;
}

Repository MetadataJob::repositoryForDirectory(const QString &directory) const
{
    if (m_metaFromDefaultRepositories.contains(directory))
        return m_metaFromDefaultRepositories.value(directory).repository;
    else
        return m_metaFromArchive.value(directory).repository;
}

// -- private slots

void MetadataJob::doStart()
{
    setError(Job::NoError);
    setErrorString(QString());
    if (!m_core) {
        emitFinishedWithError(Job::Canceled, tr("Missing package manager core engine."));
        return; // We can't do anything here without core, so avoid tons of !m_core checks.
    }
    const ProductKeyCheck *const productKeyCheck = ProductKeyCheck::instance();
    if (m_downloadType == DownloadType::All || m_downloadType == DownloadType::UpdatesXML) {
        emit infoMessage(this, tr("Preparing meta information download..."));
        const bool onlineInstaller = m_core->isInstaller() && !m_core->isOfflineOnly();
        if (onlineInstaller || m_core->isMaintainer()) {
            QList<FileTaskItem> items;
            QSet<Repository> repositories = getRepositories();
            foreach (const Repository &repo, repositories) {
                if (repo.isEnabled() &&
                        productKeyCheck->isValidRepository(repo)) {
                    QAuthenticator authenticator;
                    authenticator.setUser(repo.username());
                    authenticator.setPassword(repo.password());

                    if (!repo.isCompressed()) {
                        QString url = repo.url().toString() + QLatin1String("/Updates.xml?");
                        if (!m_core->value(scUrlQueryString).isEmpty())
                            url += m_core->value(scUrlQueryString) + QLatin1Char('&');

                        // also append a random string to avoid proxy caches
                        FileTaskItem item(url.append(QString::number(QRandomGenerator::global()->generate())));
                        item.insert(TaskRole::UserRole, QVariant::fromValue(repo));
                        item.insert(TaskRole::Authenticator, QVariant::fromValue(authenticator));
                        items.append(item);
                    }
                    else {
                        qCWarning(QInstaller::lcInstallerInstallLog) << "Trying to parse compressed repo as "
                            "normal repository. Check repository syntax.";
                    }
                }
            }
            if (items.count() > 0) {
                startXMLTask(items);
            } else {
                emitFinished();
            }
        } else {
            emitFinished();
        }
    } else {
        resetCompressedFetch();

        bool repositoriesFound = false;
        foreach (const Repository &repo, m_core->settings().temporaryRepositories()) {
            if (repo.isCompressed() && repo.isEnabled() &&
                    productKeyCheck->isValidRepository(repo)) {
                repositoriesFound = true;
                startUnzipRepositoryTask(repo);

                //Set the repository disabled so we don't handle it many times
                Repository replacement = repo;
                replacement.setEnabled(false);
                Settings &s = m_core->settings();
                QSet<Repository> temporaries = s.temporaryRepositories();
                if (temporaries.contains(repo)) {
                    temporaries.remove(repo);
                    temporaries.insert(replacement);
                    s.setTemporaryRepositories(temporaries, true);
                }
            }
        }
        if (!repositoriesFound) {
            emitFinished();
        }
        else {
            setProgressTotalAmount(0);
            emit infoMessage(this, tr("Unpacking compressed repositories. This may take a while..."));
        }
    }
}

void MetadataJob::startXMLTask(const QList<FileTaskItem> &items)
{
    DownloadFileTask *const xmlTask = new DownloadFileTask(items);
    xmlTask->setProxyFactory(m_core->proxyFactory());
    connect(&m_xmlTask, &QFutureWatcher<FileTaskResult>::progressValueChanged, this,
        &MetadataJob::progressChanged);
    m_xmlTask.setFuture(QtConcurrent::run(&DownloadFileTask::doTask, xmlTask));
}

void MetadataJob::doCancel()
{
    reset();
    emitFinishedWithError(Job::Canceled, tr("Meta data download canceled."));
}

void MetadataJob::startUnzipRepositoryTask(const Repository &repo)
{
    QTemporaryDir tempRepoDir(QDir::tempPath() + QLatin1String("/compressedRepo-XXXXXX"));
    if (!tempRepoDir.isValid()) {
        qCWarning(QInstaller::lcInstallerInstallLog) << "Cannot create unique temporary directory.";
        return;
    }
    tempRepoDir.setAutoRemove(false);
    m_tempDirDeleter.add(tempRepoDir.path());
    QString url = repo.url().toLocalFile();
    UnzipArchiveTask *task = new UnzipArchiveTask(url, tempRepoDir.path());
    QFutureWatcher<void> *watcher = new QFutureWatcher<void>();
    m_unzipRepositoryTasks.insert(watcher, qobject_cast<QObject*> (task));
    connect(watcher, &QFutureWatcherBase::finished, this,
        &MetadataJob::unzipRepositoryTaskFinished);
    connect(watcher, &QFutureWatcherBase::progressValueChanged, this,
        &MetadataJob::progressChanged);
    watcher->setFuture(QtConcurrent::run(&UnzipArchiveTask::doTask, task));
}

void MetadataJob::unzipRepositoryTaskFinished()
{
    QFutureWatcher<void> *watcher = static_cast<QFutureWatcher<void> *>(sender());
    int error = Job::NoError;
    QString errorString;
    try {
        watcher->waitForFinished();    // trigger possible exceptions

        QHashIterator<QFutureWatcher<void> *, QObject*> i(m_unzipRepositoryTasks);
        while (i.hasNext()) {

            i.next();
            if (i.key() == watcher) {
                UnzipArchiveTask *task = qobject_cast<UnzipArchiveTask*> (i.value());
                QString url = task->target();

                QUrl targetUrl = targetUrl.fromLocalFile(url);
                Repository repo(targetUrl, false, true);
                url = repo.url().toString() + QLatin1String("/Updates.xml");
                TestRepository testJob(m_core);
                testJob.setRepository(repo);
                testJob.start();
                testJob.waitForFinished();
                error = testJob.error();
                errorString = testJob.errorString();
                if (error == Job::NoError) {
                    FileTaskItem item(url);
                    item.insert(TaskRole::UserRole, QVariant::fromValue(repo));
                    m_unzipRepositoryitems.append(item);
                } else {
                    //Repository is not valid, remove it
                    Settings &s = m_core->settings();
                    QSet<Repository> temporaries = s.temporaryRepositories();
                    foreach (Repository repository, temporaries) {
                        if (repository.url().toLocalFile() == task->archive()) {
                            temporaries.remove(repository);
                        }
                    }
                    s.setTemporaryRepositories(temporaries, false);
                }
            }
        }
        delete m_unzipRepositoryTasks.value(watcher);
        m_unzipRepositoryTasks.remove(watcher);
        delete watcher;

        //One can specify many zipped repository items at once. As the repositories are
        //unzipped one by one, we collect here all items before parsing xml files from those.
        if (m_unzipRepositoryitems.count() > 0 && m_unzipRepositoryTasks.isEmpty()) {
            startXMLTask(m_unzipRepositoryitems);
        } else {
            if (error != Job::NoError) {
                emitFinishedWithError(QInstaller::DownloadError, errorString);
            }
        }

    } catch (const UnzipArchiveException &e) {
        reset();
        emitFinishedWithError(QInstaller::ExtractionError, e.message());
    } catch (const QUnhandledException &e) {
        reset();
        emitFinishedWithError(QInstaller::DownloadError, QLatin1String(e.what()));
    } catch (...) {
        reset();
        emitFinishedWithError(QInstaller::DownloadError, tr("Unknown exception during extracting."));
    }
}

void MetadataJob::xmlTaskFinished()
{
    Status status = XmlDownloadFailure;
    try {
        m_xmlTask.waitForFinished();
        status = parseUpdatesXml(m_xmlTask.future().results());
    } catch (const AuthenticationRequiredException &e) {
        if (e.type() == AuthenticationRequiredException::Type::Proxy) {
            const QNetworkProxy proxy = e.proxy();
            ProxyCredentialsDialog proxyCredentials(proxy);
            qCWarning(QInstaller::lcInstallerInstallLog) << e.message();

            if (proxyCredentials.exec() == QDialog::Accepted) {
                qCDebug(QInstaller::lcInstallerInstallLog) << "Retrying with new credentials ...";
                PackageManagerProxyFactory *factory = m_core->proxyFactory();

                factory->setProxyCredentials(proxy, proxyCredentials.userName(),
                                             proxyCredentials.password());
                m_core->setProxyFactory(factory);
                status = XmlDownloadRetry;
            } else {
                reset();
                emitFinishedWithError(QInstaller::DownloadError, tr("Missing proxy credentials."));
            }
        } else if (e.type() == AuthenticationRequiredException::Type::Server) {
            qCWarning(QInstaller::lcInstallerInstallLog) << e.message();
            ServerAuthenticationDialog dlg(e.message(), e.taskItem());
            if (dlg.exec() == QDialog::Accepted) {
                Repository original = e.taskItem().value(TaskRole::UserRole)
                    .value<Repository>();
                Repository replacement = original;
                replacement.setUsername(dlg.user());
                replacement.setPassword(dlg.password());

                Settings &s = m_core->settings();
                QSet<Repository> temporaries = s.temporaryRepositories();
                if (temporaries.contains(original)) {
                    temporaries.remove(original);
                    temporaries.insert(replacement);
                    s.addTemporaryRepositories(temporaries, true);
                } else {
                    QHash<QString, QPair<Repository, Repository> > update;
                    update.insert(QLatin1String("replace"), qMakePair(original, replacement));

                    if (s.updateRepositoryCategories(update) == Settings::UpdatesApplied)
                        qCDebug(QInstaller::lcDeveloperBuild) << "Repository categories updated.";

                    if (s.updateDefaultRepositories(update) == Settings::UpdatesApplied
                        || s.updateUserRepositories(update) == Settings::UpdatesApplied) {
                            if (m_core->isMaintainer()) {
                                bool gainedAdminRights = false;
                                if (!m_core->directoryWritable(m_core->value(scTargetDir))) {
                                    m_core->gainAdminRights();
                                    gainedAdminRights = true;
                                }
                                m_core->writeMaintenanceConfigFiles();
                                if (gainedAdminRights)
                                    m_core->dropAdminRights();
                            }
                    }
                }
                status = XmlDownloadRetry;
            } else {
                reset();
                emitFinishedWithError(QInstaller::DownloadError, tr("Authentication failed."));
            }
        }
    } catch (const TaskException &e) {
        reset();
        emitFinishedWithError(QInstaller::DownloadError, e.message());
    } catch (const QUnhandledException &e) {
        reset();
        emitFinishedWithError(QInstaller::DownloadError, QLatin1String(e.what()));
    } catch (...) {
        reset();
        emitFinishedWithError(QInstaller::DownloadError, tr("Unknown exception during download."));
    }

    if (error() != Job::NoError)
        return;

    if (status == XmlDownloadSuccess) {
        if (m_downloadType != DownloadType::UpdatesXML) {
            if (!fetchMetaDataPackages())
                emitFinished();
        } else {
            emitFinished();
        }
    } else if (status == XmlDownloadRetry) {
        QMetaObject::invokeMethod(this, "doStart", Qt::QueuedConnection);
    } else {
        reset();
        emitFinishedWithError(QInstaller::DownloadError, tr("Failure to fetch repositories."));
    }
}

void MetadataJob::unzipTaskFinished()
{
    QFutureWatcher<void> *watcher = static_cast<QFutureWatcher<void> *>(sender());
    try {
        watcher->waitForFinished();    // trigger possible exceptions
    } catch (const UnzipArchiveException &e) {
        emitFinishedWithError(QInstaller::ExtractionError, e.message());
    } catch (const QUnhandledException &e) {
        emitFinishedWithError(QInstaller::DownloadError, QLatin1String(e.what()));
    } catch (...) {
        emitFinishedWithError(QInstaller::DownloadError, tr("Unknown exception during extracting."));
    }

    if (error() != Job::NoError)
        return;

    delete m_unzipTasks.value(watcher);
    m_unzipTasks.remove(watcher);
    delete watcher;

    if (m_unzipTasks.isEmpty()) {
        setProcessedAmount(100);
        emitFinished();
    }
}

void MetadataJob::progressChanged(int progress)
{
    setProcessedAmount(progress);
}

void MetadataJob::setProgressTotalAmount(int maximum)
{
    setTotalAmount(maximum);
}

void MetadataJob::metadataTaskFinished()
{
    try {
        m_metadataTask.waitForFinished();
        m_metadataResult.append(m_metadataTask.future().results());
        if (!fetchMetaDataPackages()) {
            if (m_metadataResult.count() > 0) {
                emit infoMessage(this, tr("Extracting meta information..."));
                foreach (const FileTaskResult &result, m_metadataResult) {
                    const FileTaskItem item = result.value(TaskRole::TaskItem).value<FileTaskItem>();
                    if (result.value(TaskRole::ChecksumMismatch).toBool()) {
                        QString mismatchMessage = tr("Checksum mismatch detected for \"%1\".")
                                .arg(item.value(TaskRole::SourceFile).toString());
                        if (m_core->settings().allowUnstableComponents()) {
                            m_shaMissmatchPackages.append(item.value(TaskRole::Name).toString());
                            qCWarning(QInstaller::lcInstallerInstallLog) << mismatchMessage;
                        } else {
                            throw QInstaller::TaskException(mismatchMessage);
                        }
                    }
                    UnzipArchiveTask *task = new UnzipArchiveTask(result.target(),
                        item.value(TaskRole::UserRole).toString());

                    QFutureWatcher<void> *watcher = new QFutureWatcher<void>();
                    m_unzipTasks.insert(watcher, qobject_cast<QObject*> (task));
                    connect(watcher, &QFutureWatcherBase::finished, this, &MetadataJob::unzipTaskFinished);
                    watcher->setFuture(QtConcurrent::run(&UnzipArchiveTask::doTask, task));
                }
            } else {
                emitFinished();
            }
        }
    } catch (const TaskException &e) {
        reset();
        emitFinishedWithError(QInstaller::DownloadError, e.message());
    } catch (const QUnhandledException &e) {
        reset();
        emitFinishedWithError(QInstaller::DownloadError, QLatin1String(e.what()));
    } catch (...) {
        reset();
        emitFinishedWithError(QInstaller::DownloadError, tr("Unknown exception during download."));
    }
}


// -- private

bool MetadataJob::fetchMetaDataPackages()
{
    //Download files in chunks. QtConcurrent will choke if too many task is given to it
    int chunkSize = qMin(m_packages.length(), m_downloadableChunkSize);
    QList<FileTaskItem> tempPackages = m_packages.mid(0, chunkSize);
    m_packages = m_packages.mid(chunkSize, m_packages.length());
    if (tempPackages.length() > 0) {
        m_taskNumber++;
        setProcessedAmount(0);
        DownloadFileTask *const metadataTask = new DownloadFileTask(tempPackages);
        metadataTask->setProxyFactory(m_core->proxyFactory());
        m_metadataTask.setFuture(QtConcurrent::run(&DownloadFileTask::doTask, metadataTask));
        setProgressTotalAmount(100);
        QString metaInformation;
        if (m_totalTaskCount > 1)
            metaInformation = tr("Retrieving meta information from remote repository... %1/%2 ").arg(m_taskNumber).arg(m_totalTaskCount);
        else
            metaInformation = tr("Retrieving meta information from remote repository... ");
        emit infoMessage(this, metaInformation);
        return true;
    }
    return false;
}

void MetadataJob::reset()
{
    m_packages.clear();
    m_metaFromDefaultRepositories.clear();
    m_metaFromArchive.clear();
    m_fetchedArchive.clear();

    setError(Job::NoError);
    setErrorString(QString());
    setCapabilities(Cancelable);

    try {
        m_xmlTask.cancel();
        m_metadataTask.cancel();
    } catch (...) {}
    m_tempDirDeleter.releaseAndDeleteAll();
    m_metadataResult.clear();
    m_taskNumber = 0;
}

void MetadataJob::resetCompressedFetch()
{
    setError(Job::NoError);
    setErrorString(QString());
    m_unzipRepositoryitems.clear();

    try {
        foreach (QFutureWatcher<void> *const watcher, m_unzipTasks.keys()) {
            watcher->cancel();
            watcher->deleteLater();
        }
        foreach (QObject *const object, m_unzipTasks)
            object->deleteLater();
        m_unzipTasks.clear();

        foreach (QFutureWatcher<void> *const watcher, m_unzipRepositoryTasks.keys()) {
            watcher->cancel();
            watcher->deleteLater();
        }
        foreach (QObject *const object, m_unzipRepositoryTasks)
            object->deleteLater();
        m_unzipRepositoryTasks.clear();
    } catch (...) {}
}

MetadataJob::Status MetadataJob::parseUpdatesXml(const QList<FileTaskResult> &results)
{
    foreach (const FileTaskResult &result, results) {
        if (error() != Job::NoError)
            return XmlDownloadFailure;

        //If repository is not found, target might be empty. Do not continue parsing the
        //repository and do not prevent further repositories usage.
        if (result.target().isEmpty()) {
            continue;
        }
        Metadata metadata;
        QTemporaryDir tmp(QDir::tempPath() + QLatin1String("/remoterepo-XXXXXX"));
        if (!tmp.isValid()) {
            qCWarning(QInstaller::lcInstallerInstallLog) << "Cannot create unique temporary directory.";
            return XmlDownloadFailure;
        }

        tmp.setAutoRemove(false);
        metadata.directory = tmp.path();
        m_tempDirDeleter.add(metadata.directory);

        QFile file(result.target());
        if (!file.rename(metadata.directory + QLatin1String("/Updates.xml"))) {
            qCWarning(QInstaller::lcInstallerInstallLog) << "Cannot rename target to Updates.xml:"
                << file.errorString();
            return XmlDownloadFailure;
        }

        if (!file.open(QIODevice::ReadOnly)) {
            qCWarning(QInstaller::lcInstallerInstallLog) << "Cannot open Updates.xml for reading:"
                << file.errorString();
            return XmlDownloadFailure;
        }

        QString error;
        QDomDocument doc;
        if (!doc.setContent(&file, &error)) {
            qCWarning(QInstaller::lcInstallerInstallLog).nospace() << "Cannot fetch a valid version of Updates.xml from repository "
                               << metadata.repository.displayname() << ": " << error;
            //If there are other repositories, try to use those
            continue;
        }
        file.close();

        const FileTaskItem item = result.value(TaskRole::TaskItem).value<FileTaskItem>();
        metadata.repository = item.value(TaskRole::UserRole).value<Repository>();
        const bool online = !(metadata.repository.url().scheme()).isEmpty();

        bool testCheckSum = true;
        const QDomElement root = doc.documentElement();
        const QDomNode checksum = root.firstChildElement(QLatin1String("Checksum"));
        if (!checksum.isNull())
            testCheckSum = (checksum.toElement().text().toLower() == scTrue);

        // If we have top level sha1 and MetadataName elements, we have compressed
        // all metadata inside one repository to a single 7z file. Fetch that
        // instead of component specific meta 7z files.
        const QDomNode sha1 = root.firstChildElement(scSHA1);
        QDomElement metadataNameElement = root.firstChildElement(QLatin1String("MetadataName"));
        QDomNodeList children = root.childNodes();
        if (!sha1.isNull() && !metadataNameElement.isNull()) {
           const QString repoUrl = metadata.repository.url().toString();
           const QString metadataName = metadataNameElement.toElement().text();
           addFileTaskItem(QString::fromLatin1("%1/%2").arg(repoUrl, metadataName),
               metadata.directory + QString::fromLatin1("/%1").arg(metadataName),
               metadata, sha1.toElement().text(), QString());
        } else {
            bool metaFound = false;
            for (int i = 0; i < children.count(); ++i) {
                const QDomElement el = children.at(i).toElement();
                if (!el.isNull() && el.tagName() == QLatin1String("PackageUpdate")) {
                    const QDomNodeList c2 = el.childNodes();
                    QString packageName, packageVersion, packageHash;
                    metaFound = parsePackageUpdate(c2, packageName, packageVersion, packageHash,
                                                   online, testCheckSum);

                    //If meta element (script, licenses, etc.) is not found, no need to fetch metadata
                    if (metaFound) {
                        const QString repoUrl = metadata.repository.url().toString();
                        addFileTaskItem(QString::fromLatin1("%1/%2/%3meta.7z").arg(repoUrl, packageName, packageVersion),
                            metadata.directory + QString::fromLatin1("/%1-%2-meta.7z").arg(packageName, packageVersion),
                            metadata, packageHash, packageName);
                    } else {
                        QString fileName = metadata.directory + QLatin1Char('/') + packageName;
                        QDir directory(fileName);
                        if (!directory.exists()) {
                            directory.mkdir(fileName);
                        }
                    }
                }
            }
        }

        if (metadata.repository.categoryname().isEmpty()) {
            m_metaFromDefaultRepositories.insert(metadata.directory, metadata);
        } else {
            //Hash metadata to help checking if meta for repository is already fetched
            ArchiveMetadata archiveMetadata;
            archiveMetadata.metaData = metadata;
            m_fetchedArchive.insertMulti(metadata.repository.categoryname(), archiveMetadata);

            //Check if other categories have the same url (contains same metadata)
            //so we can speed up other category fetches
            foreach (RepositoryCategory category, m_core->settings().repositoryCategories()) {
                if (category.displayname() != metadata.repository.categoryname()) {
                    foreach (Repository repository, category.repositories()) {
                        if (repository.url() == metadata.repository.url()) {
                            m_fetchedArchive.insertMulti(category.displayname(), archiveMetadata);
                        }
                    }
                }
            }
            // Hash for faster lookups
            m_metaFromArchive.insert(metadata.directory, metadata);
        }


        // search for additional repositories that we might need to check
        const QDomNode repositoryUpdate = root.firstChildElement(QLatin1String("RepositoryUpdate"));
        if (!repositoryUpdate.isNull()) {
            QHash<QString, QPair<Repository, Repository> > repositoryUpdates =
                    searchAdditionalRepositories(repositoryUpdate, result, metadata);
            if (!repositoryUpdates.isEmpty()) {
                MetadataJob::Status status = setAdditionalRepositories(repositoryUpdates, result, metadata);
                if (status == XmlDownloadRetry)
                    return status;
            }
        }
    }
    double taskCount = m_packages.length()/static_cast<double>(m_downloadableChunkSize);
    m_totalTaskCount = qCeil(taskCount);
    m_taskNumber = 0;

    return XmlDownloadSuccess;
}

QSet<Repository> MetadataJob::getRepositories()
{
    QSet<Repository> repositories;

    //In the first run, m_metadata is empty. Get always the default repositories
    if (m_metaFromDefaultRepositories.isEmpty()) {
        repositories = m_core->settings().repositories();
    }

    // Fetch repositories under archive which are selected in UI.
    // If repository is already fetched, do not fetch it again.
    // In updater mode, fetch always all archive repositories to get updates
    foreach (RepositoryCategory repositoryCategory, m_core->settings().repositoryCategories()) {
        if (m_core->isUpdater() || (repositoryCategory.isEnabled())) {
                foreach (Repository repository, repositoryCategory.repositories()) {
                    QHashIterator<QString, ArchiveMetadata> i(m_fetchedArchive);
                    bool fetch = true;
                    while (i.hasNext()) {
                        i.next();
                        ArchiveMetadata metaData = i.value();
                        if (repository.url() == metaData.metaData.repository.url())
                            fetch = false;
                    }
                    if (fetch)
                        repositories.insert(repository);
                }
            }
    }
    return repositories;
}

void MetadataJob::addFileTaskItem(const QString &source, const QString &target, const Metadata &metadata,
                                  const QString &sha1, const QString &packageName)
{
    FileTaskItem item(source, target);
    QAuthenticator authenticator;
    authenticator.setUser(metadata.repository.username());
    authenticator.setPassword(metadata.repository.password());

    item.insert(TaskRole::UserRole, metadata.directory);
    item.insert(TaskRole::Checksum, sha1.toLatin1());
    item.insert(TaskRole::Authenticator, QVariant::fromValue(authenticator));
    item.insert(TaskRole::Name, packageName);
    m_packages.append(item);
}

bool MetadataJob::parsePackageUpdate(const QDomNodeList &c2, QString &packageName,
                                    QString &packageVersion, QString &packageHash,
                                    bool online, bool testCheckSum)
{
    bool metaFound = false;
    for (int j = 0; j < c2.count(); ++j) {
        const QDomElement element = c2.at(j).toElement();
        if (element.tagName() == scName)
            packageName = element.text();
        else if (element.tagName() == scVersion)
            packageVersion = (online ? element.text() : QString());
        else if ((element.tagName() == QLatin1String("SHA1")) && testCheckSum)
            packageHash = element.text();
        else {
            foreach (QString meta, metaElements) {
                if (element.tagName() == meta) {
                    metaFound = true;
                    break;
                }
            }
        }
    }
    return metaFound;
}

QHash<QString, QPair<Repository, Repository> > MetadataJob::searchAdditionalRepositories
    (const QDomNode &repositoryUpdate, const FileTaskResult &result, const Metadata &metadata)
{
    QHash<QString, QPair<Repository, Repository> > repositoryUpdates;
    const QDomNodeList children = repositoryUpdate.toElement().childNodes();
    for (int i = 0; i < children.count(); ++i) {
        const QDomElement el = children.at(i).toElement();
        if (!el.isNull() && el.tagName() == QLatin1String("Repository")) {
            const QString action = el.attribute(QLatin1String("action"));
            if (action == QLatin1String("add")) {
                // add a new repository to the defaults list
                Repository repository(resolveUrl(result, el.attribute(QLatin1String("url"))), true);
                repository.setUsername(el.attribute(QLatin1String("username")));
                repository.setPassword(el.attribute(QLatin1String("password")));
                repository.setDisplayName(el.attribute(QLatin1String("displayname")));
                if (ProductKeyCheck::instance()->isValidRepository(repository)) {
                    repositoryUpdates.insertMulti(action, qMakePair(repository, Repository()));
                    qDebug() << "Repository to add:" << repository.displayname();
                }
            } else if (action == QLatin1String("remove")) {
                // remove possible default repositories using the given server url
                Repository repository(resolveUrl(result, el.attribute(QLatin1String("url"))), true);
                repository.setDisplayName(el.attribute(QLatin1String("displayname")));
                repositoryUpdates.insertMulti(action, qMakePair(repository, Repository()));

                qDebug() << "Repository to remove:" << repository.displayname();
            } else if (action == QLatin1String("replace")) {
                // replace possible default repositories using the given server url
                Repository oldRepository(resolveUrl(result, el.attribute(QLatin1String("oldUrl"))), true);
                Repository newRepository(resolveUrl(result, el.attribute(QLatin1String("newUrl"))), true);
                newRepository.setUsername(el.attribute(QLatin1String("username")));
                newRepository.setPassword(el.attribute(QLatin1String("password")));
                newRepository.setDisplayName(el.attribute(QLatin1String("displayname")));

                if (ProductKeyCheck::instance()->isValidRepository(newRepository)) {
                    // store the new repository and the one old it replaces
                    repositoryUpdates.insertMulti(action, qMakePair(newRepository, oldRepository));
                    qDebug() << "Replace repository" << oldRepository.displayname() << "with"
                        << newRepository.displayname();
                }
            } else {
                qDebug() << "Invalid additional repositories action set in Updates.xml fetched "
                    "from" << metadata.repository.displayname() << "line:" << el.lineNumber();
            }
        }
    }
    return repositoryUpdates;
}

MetadataJob::Status MetadataJob::setAdditionalRepositories(QHash<QString, QPair<Repository, Repository> > repositoryUpdates,
                                            const FileTaskResult &result, const Metadata& metadata)
{
    MetadataJob::Status status = XmlDownloadSuccess;
    Settings &s = m_core->settings();
    const QSet<Repository> temporaries = s.temporaryRepositories();
    // in case the temp repository introduced something new, we only want that temporary
    if (temporaries.contains(metadata.repository)) {
        QSet<Repository> tmpRepositories;
        typedef QPair<Repository, Repository> RepositoryPair;

        QList<RepositoryPair> values = repositoryUpdates.values(QLatin1String("add"));
        foreach (const RepositoryPair &value, values)
            tmpRepositories.insert(value.first);

        values = repositoryUpdates.values(QLatin1String("replace"));
        foreach (const RepositoryPair &value, values)
            tmpRepositories.insert(value.first);

        tmpRepositories = tmpRepositories.subtract(temporaries);
        if (tmpRepositories.count() > 0) {
            s.addTemporaryRepositories(tmpRepositories, true);
            QFile::remove(result.target());
            m_metaFromDefaultRepositories.clear();
            status = XmlDownloadRetry;
        }
    } else if (s.updateDefaultRepositories(repositoryUpdates) == Settings::UpdatesApplied) {
        if (m_core->isMaintainer()) {
            bool gainedAdminRights = false;
            if (!m_core->directoryWritable(m_core->value(scTargetDir))) {
                m_core->gainAdminRights();
                gainedAdminRights = true;
            }
            m_core->writeMaintenanceConfigFiles();
            if (gainedAdminRights)
                m_core->dropAdminRights();
        }
        m_metaFromDefaultRepositories.clear();
        QFile::remove(result.target());
        status = XmlDownloadRetry;
    }
    return status;
}
}   // namespace QInstaller