mirror of
https://github.com/nextcloud/desktop.git
synced 2024-10-27 23:17:13 +03:00
599 lines
23 KiB
C++
599 lines
23 KiB
C++
/*
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* Copyright (C) by Olivier Goffart <ogoffart@owncloud.com>
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* Copyright (C) by Klaas Freitag <freitag@owncloud.com>
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*
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* This program is free software; you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation; either version 2 of the License, or
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* (at your option) any later version.
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*
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* This program is distributed in the hope that it will be useful, but
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* WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY
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* or FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
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* for more details.
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*/
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#include "propagator_legacy.h"
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#include "owncloudpropagator_p.h"
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#include "utility.h"
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#include "syncjournaldb.h"
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#include "syncjournalfilerecord.h"
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#include "filesystem.h"
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#include <httpbf.h>
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#include <qfile.h>
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#include <qdir.h>
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#include <qdiriterator.h>
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#include <qtemporaryfile.h>
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#include <QDebug>
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#include <QDateTime>
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#include <qstack.h>
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#include <QCoreApplication>
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#include <neon/ne_basic.h>
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#include <neon/ne_socket.h>
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#include <neon/ne_session.h>
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#include <neon/ne_props.h>
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#include <neon/ne_auth.h>
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#include <neon/ne_dates.h>
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#include <neon/ne_compress.h>
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#include <neon/ne_redirect.h>
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#include <time.h>
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namespace Mirall {
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void PropagateUploadFileLegacy::start()
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{
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if (_propagator->_abortRequested.fetchAndAddRelaxed(0))
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return;
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QFile file(_propagator->_localDir + _item._file);
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if (!file.open(QIODevice::ReadOnly)) {
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done(SyncFileItem::NormalError, file.errorString());
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return;
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}
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QScopedPointer<char, QScopedPointerPodDeleter> uri(
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ne_path_escape((_propagator->_remoteDir + _item._file).toUtf8()));
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int attempts = 0;
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/*
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* do ten tries to upload the file chunked. Check the file size and mtime
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* before submitting a chunk and after having submitted the last one.
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* If the file has changed, retry.
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*/
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qDebug() << "** PUT request to" << uri.data();
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const SyncJournalDb::UploadInfo progressInfo = _propagator->_journal->getUploadInfo(_item._file);
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do {
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Hbf_State state = HBF_SUCCESS;
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QScopedPointer<hbf_transfer_t, ScopedPointerHelpers> trans(hbf_init_transfer(uri.data()));
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Q_ASSERT(trans);
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trans->user_data = this;
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hbf_set_log_callback(trans.data(), _log_callback);
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hbf_set_abort_callback(trans.data(), _user_want_abort);
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trans.data()->chunk_finished_cb = chunk_finished_cb;
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static uint chunkSize = qgetenv("OWNCLOUD_CHUNK_SIZE").toUInt();
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if (chunkSize > 0) {
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trans->block_size = trans->threshold = chunkSize;
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}
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state = hbf_splitlist(trans.data(), file.handle());
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// If the source file has changed during upload, it is detected and the
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// variable _previousFileSize is set accordingly. The propagator waits a
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// couple of seconds and retries.
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if(_previousFileSize > 0) {
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qDebug() << "File size changed underway: " << trans->stat_size - _previousFileSize;
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// Report the change of the overall transmission size to the propagator (queued connection because we are in a thread)
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QMetaObject::invokeMethod(_propagator, "adjustTotalTransmissionSize", Qt::QueuedConnection,
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Q_ARG(qint64, trans->stat_size - _previousFileSize));
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// update the item's values to the current from trans. hbf_splitlist does a stat
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_item._size = trans->stat_size;
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_item._modtime = trans->modtime;
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}
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emit progress(_item, 0);
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if (progressInfo._valid) {
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if (Utility::qDateTimeToTime_t(progressInfo._modtime) == _item._modtime) {
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trans->start_id = progressInfo._chunk;
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trans->transfer_id = progressInfo._transferid;
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}
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}
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ne_set_notifier(_propagator->_session, notify_status_cb, this);
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_lastTime.restart();
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_lastProgress = 0;
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_chunked_done = 0;
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_chunked_total_size = _item._size;
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if( state == HBF_SUCCESS ) {
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QByteArray previousEtag;
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if (!_item._etag.isEmpty() && _item._etag != "empty_etag") {
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// We add quotes because the owncloud server always add quotes around the etag, and
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// csync_owncloud.c's owncloud_file_id always strip the quotes.
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previousEtag = '"' + _item._etag + '"';
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trans->previous_etag = previousEtag.data();
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}
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_chunked_total_size = trans->stat_size;
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qDebug() << "About to upload " << _item._file << " (" << previousEtag << _item._size << " bytes )";
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/* Transfer all the chunks through the HTTP session using PUT. */
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state = hbf_transfer( _propagator->_session, trans.data(), "PUT" );
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}
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// the file id should only be empty for new files up- or downloaded
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QByteArray fid = hbf_transfer_file_id( trans.data() );
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if( !fid.isEmpty() ) {
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if( !_item._fileId.isEmpty() && _item._fileId != fid ) {
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qDebug() << "WARN: File ID changed!" << _item._fileId << fid;
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}
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_item._fileId = fid;
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}
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/* Handle errors. */
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if ( state != HBF_SUCCESS ) {
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/* If the source file changed during submission, lets try again */
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if( state == HBF_SOURCE_FILE_CHANGE ) {
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if( attempts++ < 5 ) { /* FIXME: How often do we want to try? */
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qDebug("SOURCE file has changed during upload, retry #%d in %d seconds!", attempts, 2*attempts);
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Utility::sleep(2*attempts);
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if( _previousFileSize == 0 ) {
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_previousFileSize = _item._size;
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} else {
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_previousFileSize = trans->stat_size;
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}
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continue;
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}
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const QString errMsg = tr("Local file changed during sync, syncing once it arrived completely");
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done( SyncFileItem::SoftError, errMsg );
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} else if( state == HBF_USER_ABORTED ) {
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const QString errMsg = tr("Sync was aborted by user.");
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done( SyncFileItem::SoftError, errMsg );
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} else {
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// Other HBF error conditions.
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_item._httpErrorCode = hbf_fail_http_code(trans.data());
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if(checkForProblemsWithShared(_item._httpErrorCode,
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tr("The file was edited locally but is part of a read only share. "
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"It is restored and your edit is in the conflict file.")))
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return;
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done(SyncFileItem::NormalError, hbf_error_string(trans.data(), state));
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}
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return;
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}
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ne_set_notifier(_propagator->_session, 0, 0);
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if( trans->modtime_accepted ) {
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_item._etag = parseEtag(hbf_transfer_etag( trans.data() ));
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} else {
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if (!updateMTimeAndETag(uri.data(), _item._modtime))
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return;
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}
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_propagator->_journal->setFileRecord(SyncJournalFileRecord(_item, _propagator->_localDir + _item._file));
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// Remove from the progress database:
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_propagator->_journal->setUploadInfo(_item._file, SyncJournalDb::UploadInfo());
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_propagator->_journal->commit("upload file start");
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if (hbf_validate_source_file(trans.data()) == HBF_SOURCE_FILE_CHANGE) {
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/* Did the source file changed since the upload ?
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* This is different from the previous check because the previous check happens between
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* chunks while this one happens when the whole file has been uploaded.
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*
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* The new etag is already stored in the database in the previous lines so in case of
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* crash, we won't have a conflict but we will properly do a new upload
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*/
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if( attempts++ < 5 ) { /* FIXME: How often do we want to try? */
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qDebug("SOURCE file has changed after upload, retry #%d in %d seconds!", attempts, 2*attempts);
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Utility::sleep(2*attempts);
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continue;
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}
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// Still the file change error, but we tried a couple of times.
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// Ignore this file for now.
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// Lets remove the file from the server (at least if it is new) as it is different
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// from our file here.
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if( _item._instruction == CSYNC_INSTRUCTION_NEW ) {
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QScopedPointer<char, QScopedPointerPodDeleter> uri(
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ne_path_escape((_propagator->_remoteDir + _item._file).toUtf8()));
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int rc = ne_delete(_propagator->_session, uri.data());
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qDebug() << "Remove the invalid file from server:" << rc;
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}
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const QString errMsg = tr("Local file changed during sync, syncing once it arrived completely");
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done( SyncFileItem::SoftError, errMsg );
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return;
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}
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done(SyncFileItem::Success);
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return;
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} while( true );
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}
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void PropagateUploadFileLegacy::chunk_finished_cb(hbf_transfer_s *trans, int chunk, void* userdata)
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{
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PropagateUploadFileLegacy *that = static_cast<PropagateUploadFileLegacy *>(userdata);
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Q_ASSERT(that);
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that->_chunked_done += trans->block_arr[chunk]->size;
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if (trans->block_cnt > 1) {
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SyncJournalDb::UploadInfo pi;
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pi._valid = true;
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pi._chunk = chunk + 1; // next chunk to start with
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pi._transferid = trans->transfer_id;
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pi._modtime = Utility::qDateTimeFromTime_t(trans->modtime);
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that->_propagator->_journal->setUploadInfo(that->_item._file, pi);
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that->_propagator->_journal->commit("Upload info");
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}
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}
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void PropagateUploadFileLegacy::notify_status_cb(void* userdata, ne_session_status status,
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const ne_session_status_info* info)
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{
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PropagateUploadFileLegacy* that = reinterpret_cast<PropagateUploadFileLegacy*>(userdata);
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if (status == ne_status_sending && info->sr.total > 0) {
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emit that->progress(that->_item, that->_chunked_done + info->sr.progress);
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that->limitBandwidth(that->_chunked_done + info->sr.progress, that->_propagator->_uploadLimit.fetchAndAddAcquire(0));
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}
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}
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static QByteArray parseFileId(ne_request *req) {
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QByteArray fileId;
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const char *header = ne_get_response_header(req, "OC-FileId");
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if( header ) {
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fileId = header;
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}
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return fileId;
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}
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bool PropagateNeonJob::updateMTimeAndETag(const char* uri, time_t mtime)
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{
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QByteArray modtime = QByteArray::number(qlonglong(mtime));
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ne_propname pname;
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pname.nspace = "DAV:";
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pname.name = "lastmodified";
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ne_proppatch_operation ops[2];
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ops[0].name = &pname;
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ops[0].type = ne_propset;
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ops[0].value = modtime.constData();
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ops[1].name = NULL;
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int rc = ne_proppatch( _propagator->_session, uri, ops );
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Q_UNUSED(rc);
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/* FIXME: error handling
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* bool error = updateErrorFromSession( rc );
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* if( error ) {
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* // FIXME: We could not set the mtime. Error or not?
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* qDebug() << "PROP-Patching of modified date failed.";
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}*/
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// get the etag
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QScopedPointer<ne_request, ScopedPointerHelpers> req(ne_request_create(_propagator->_session, "HEAD", uri));
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int neon_stat = ne_request_dispatch(req.data());
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if (updateErrorFromSession(neon_stat, req.data())) {
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return false;
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} else {
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_item._etag = parseEtag(ne_get_response_header(req.data(), "etag"));
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QByteArray fid = parseFileId(req.data());
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if( _item._fileId.isEmpty() ) {
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_item._fileId = fid;
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qDebug() << "FileID was empty, set it to " << _item._fileId;
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} else {
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if( !fid.isEmpty() && fid != _item._fileId ) {
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qDebug() << "WARN: FileID seems to have changed: "<< fid << _item._fileId;
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} else {
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qDebug() << "FileID is " << _item._fileId;
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}
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}
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return true;
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}
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}
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void PropagateNeonJob::limitBandwidth(qint64 progress, qint64 bandwidth_limit)
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{
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if (bandwidth_limit > 0) {
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int64_t diff = _lastTime.nsecsElapsed() / 1000;
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int64_t len = progress - _lastProgress;
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if (len > 0 && diff > 0 && (1000000 * len / diff) > bandwidth_limit) {
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int64_t wait_time = (1000000 * len / bandwidth_limit) - diff;
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if (wait_time > 0) {
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//qDebug() << "Limiting bandwidth to " << bandwidth_limit << "KB/s by waiting " << wait_time << " µs; ";
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Mirall::Utility::usleep(wait_time);
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}
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}
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_lastProgress = progress;
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_lastTime.start();
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} else if (bandwidth_limit < 0 && bandwidth_limit > -100) {
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int64_t diff = _lastTime.nsecsElapsed() / 1000;
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if (diff > 0) {
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// -bandwidth_limit is the % of bandwidth
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int64_t wait_time = -diff * (1 + 100.0 / bandwidth_limit);
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if (wait_time > 0) {
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Mirall::Utility::usleep(wait_time);
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}
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}
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_lastTime.start();
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}
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}
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int PropagateDownloadFileLegacy::content_reader(void *userdata, const char *buf, size_t len)
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{
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PropagateDownloadFileLegacy *that = static_cast<PropagateDownloadFileLegacy *>(userdata);
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size_t written = 0;
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if (that->_propagator->_abortRequested.fetchAndAddRelaxed(0)) {
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ne_set_error(that->_propagator->_session, "%s", tr("Sync was aborted by user.").toUtf8().data());
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return NE_ERROR;
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}
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if(buf) {
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written = that->_file->write(buf, len);
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if( len != written || that->_file->error() != QFile::NoError) {
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qDebug() << "WRN: content_reader wrote wrong num of bytes:" << len << "," << written;
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return NE_ERROR;
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}
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return NE_OK;
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}
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return NE_ERROR;
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}
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/*
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* This hook is called after the response is here from the server, but before
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* the response body is parsed. It decides if the response is compressed and
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* if it is it installs the compression reader accordingly.
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* If the response is not compressed, the normal response body reader is installed.
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*/
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void PropagateDownloadFileLegacy::install_content_reader( ne_request *req, void *userdata, const ne_status *status )
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{
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PropagateDownloadFileLegacy *that = static_cast<PropagateDownloadFileLegacy *>(userdata);
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Q_UNUSED(status);
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if( !that ) {
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qDebug("Error: install_content_reader called without valid write context!");
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return;
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}
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if( ne_get_status(req)->klass != 2 ) {
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qDebug() << "Request class != 2, aborting.";
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ne_add_response_body_reader( req, do_not_accept,
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do_not_download_content_reader,
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(void*) that );
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return;
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}
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QByteArray reason_phrase = ne_get_status(req)->reason_phrase;
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if(reason_phrase == QByteArray("Connection established")) {
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ne_add_response_body_reader( req, ne_accept_2xx,
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content_reader,
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(void*) that );
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return;
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}
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QByteArray etag = parseEtag(ne_get_response_header(req, "etag"));
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if(etag.isEmpty())
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etag = parseEtag(ne_get_response_header(req, "ETag"));
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if (etag.isEmpty()) {
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qDebug() << Q_FUNC_INFO << "No E-Tag reply by server, considering it invalid" << ne_get_response_header(req, "etag");
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that->errorString = tr("No E-Tag received from server, check Proxy/Gateway");
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ne_set_error(that->_propagator->_session, "%s", that->errorString.toUtf8().data());
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ne_add_response_body_reader( req, do_not_accept,
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do_not_download_content_reader,
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(void*) that );
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return;
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} else if (!that->_expectedEtagForResume.isEmpty() && that->_expectedEtagForResume != etag) {
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qDebug() << Q_FUNC_INFO << "We received a different E-Tag for resuming!"
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<< QString::fromLatin1(that->_expectedEtagForResume.data()) << "vs"
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<< QString::fromLatin1(etag.data());
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that->errorString = tr("We received a different E-Tag for resuming. Retrying next time.");
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ne_set_error(that->_propagator->_session, "%s", that->errorString.toUtf8().data());
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ne_add_response_body_reader( req, do_not_accept,
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do_not_download_content_reader,
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(void*) that );
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return;
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}
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const char *enc = ne_get_response_header( req, "Content-Encoding" );
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qDebug("Content encoding ist <%s> with status %d", enc ? enc : "empty",
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status ? status->code : -1 );
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if( enc == QLatin1String("gzip") ) {
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that->_decompress.reset(ne_decompress_reader( req, ne_accept_2xx,
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content_reader, /* reader callback */
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that )); /* userdata */
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} else {
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ne_add_response_body_reader( req, ne_accept_2xx,
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content_reader,
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(void*) that );
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}
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}
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void PropagateDownloadFileLegacy::notify_status_cb(void* userdata, ne_session_status status,
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const ne_session_status_info* info)
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{
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PropagateDownloadFileLegacy* that = reinterpret_cast<PropagateDownloadFileLegacy*>(userdata);
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if (status == ne_status_recving && info->sr.total > 0) {
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emit that->progress(that->_item, info->sr.progress );
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that->limitBandwidth(info->sr.progress, that->_propagator->_downloadLimit.fetchAndAddAcquire(0));
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}
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}
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extern QString makeConflictFileName(const QString &fn, const QDateTime &dt); // _qnam.cpp
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void PropagateDownloadFileLegacy::start()
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{
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if (_propagator->_abortRequested.fetchAndAddRelaxed(0))
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return;
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emit progress(_item, 0);
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QString tmpFileName;
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const SyncJournalDb::DownloadInfo progressInfo = _propagator->_journal->getDownloadInfo(_item._file);
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if (progressInfo._valid) {
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// if the etag has changed meanwhile, remove the already downloaded part.
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if (progressInfo._etag != _item._etag) {
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QFile::remove(_propagator->_localDir + progressInfo._tmpfile);
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_propagator->_journal->setDownloadInfo(_item._file, SyncJournalDb::DownloadInfo());
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} else {
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tmpFileName = progressInfo._tmpfile;
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_expectedEtagForResume = progressInfo._etag;
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}
|
|
|
|
}
|
|
|
|
if (tmpFileName.isEmpty()) {
|
|
tmpFileName = _item._file;
|
|
//add a dot at the begining of the filename to hide the file.
|
|
int slashPos = tmpFileName.lastIndexOf('/');
|
|
tmpFileName.insert(slashPos+1, '.');
|
|
//add the suffix
|
|
tmpFileName += ".~" + QString::number(uint(qrand()), 16);
|
|
}
|
|
|
|
QFile tmpFile(_propagator->_localDir + tmpFileName);
|
|
_file = &tmpFile;
|
|
if (!tmpFile.open(QIODevice::Append | QIODevice::Unbuffered)) {
|
|
done(SyncFileItem::NormalError, tmpFile.errorString());
|
|
return;
|
|
}
|
|
|
|
FileSystem::setFileHidden(tmpFile.fileName(), true);
|
|
|
|
{
|
|
SyncJournalDb::DownloadInfo pi;
|
|
pi._etag = _item._etag;
|
|
pi._tmpfile = tmpFileName;
|
|
pi._valid = true;
|
|
_propagator->_journal->setDownloadInfo(_item._file, pi);
|
|
_propagator->_journal->commit("download file start");
|
|
}
|
|
|
|
/* actually do the request */
|
|
int retry = 0;
|
|
|
|
QScopedPointer<char, QScopedPointerPodDeleter> uri(
|
|
ne_path_escape((_propagator->_remoteDir + _item._file).toUtf8()));
|
|
|
|
do {
|
|
QScopedPointer<ne_request, ScopedPointerHelpers> req(ne_request_create(_propagator->_session, "GET", uri.data()));
|
|
|
|
/* Allow compressed content by setting the header */
|
|
ne_add_request_header( req.data(), "Accept-Encoding", "gzip" );
|
|
|
|
if (tmpFile.size() > 0) {
|
|
quint64 done = tmpFile.size();
|
|
if (done == _item._size) {
|
|
qDebug() << "File is already complete, no need to download";
|
|
break;
|
|
}
|
|
QByteArray rangeRequest = "bytes=" + QByteArray::number(done) +'-';
|
|
ne_add_request_header(req.data(), "Range", rangeRequest.constData());
|
|
ne_add_request_header(req.data(), "Accept-Ranges", "bytes");
|
|
qDebug() << "Retry with range " << rangeRequest;
|
|
}
|
|
|
|
/* hook called before the content is parsed to set the correct reader,
|
|
* either the compressed- or uncompressed reader.
|
|
*/
|
|
ne_hook_post_headers( _propagator->_session, install_content_reader, this);
|
|
ne_set_notifier(_propagator->_session, notify_status_cb, this);
|
|
_lastProgress = 0;
|
|
_lastTime.start();
|
|
|
|
int neon_stat = ne_request_dispatch(req.data());
|
|
|
|
_decompress.reset(); // Destroy the decompress after the request has been dispatched.
|
|
|
|
/* delete the hook again, otherwise they get chained as they are with the session */
|
|
ne_unhook_post_headers( _propagator->_session, install_content_reader, this );
|
|
ne_set_notifier(_propagator->_session, 0, 0);
|
|
|
|
if (neon_stat == NE_TIMEOUT && (++retry) < 3) {
|
|
continue;
|
|
}
|
|
|
|
// This one is set by install_content_reader if e.g. there is no E-Tag
|
|
if (!errorString.isEmpty()) {
|
|
// don't keep the temporary file as the file downloaded so far is invalid
|
|
tmpFile.close();
|
|
tmpFile.remove();
|
|
_propagator->_journal->setDownloadInfo(_item._file, SyncJournalDb::DownloadInfo());
|
|
done(SyncFileItem::SoftError, errorString);
|
|
return;
|
|
}
|
|
|
|
// This one is set by neon
|
|
if( updateErrorFromSession(neon_stat, req.data() ) ) {
|
|
qDebug("Error GET: Neon: %d", neon_stat);
|
|
if (tmpFile.size() == 0) {
|
|
// don't keep the temporary file if it is empty.
|
|
tmpFile.close();
|
|
tmpFile.remove();
|
|
_propagator->_journal->setDownloadInfo(_item._file, SyncJournalDb::DownloadInfo());
|
|
}
|
|
return;
|
|
}
|
|
_item._etag = parseEtag(ne_get_response_header(req.data(), "etag"));
|
|
break;
|
|
} while (1);
|
|
|
|
tmpFile.close();
|
|
tmpFile.flush();
|
|
QString fn = _propagator->_localDir + _item._file;
|
|
|
|
|
|
bool isConflict = _item._instruction == CSYNC_INSTRUCTION_CONFLICT
|
|
&& !FileSystem::fileEquals(fn, tmpFile.fileName()); // compare the files to see if there was an actual conflict.
|
|
//In case of conflict, make a backup of the old file
|
|
if (isConflict) {
|
|
QFile f(fn);
|
|
QString conflictFileName = makeConflictFileName(fn, Utility::qDateTimeFromTime_t(_item._modtime));
|
|
if (!f.rename(conflictFileName)) {
|
|
//If the rename fails, don't replace it.
|
|
done(SyncFileItem::NormalError, f.errorString());
|
|
return;
|
|
}
|
|
}
|
|
|
|
QFileInfo existingFile(fn);
|
|
if(existingFile.exists() && existingFile.permissions() != tmpFile.permissions()) {
|
|
tmpFile.setPermissions(existingFile.permissions());
|
|
}
|
|
|
|
FileSystem::setFileHidden(tmpFile.fileName(), false);
|
|
|
|
QString error;
|
|
if (!FileSystem::renameReplace(tmpFile.fileName(), fn, &error)) {
|
|
done(SyncFileItem::NormalError, error);
|
|
return;
|
|
}
|
|
|
|
FileSystem::setModTime(fn, _item._modtime);
|
|
|
|
_propagator->_journal->setFileRecord(SyncJournalFileRecord(_item, fn));
|
|
_propagator->_journal->setDownloadInfo(_item._file, SyncJournalDb::DownloadInfo());
|
|
_propagator->_journal->commit("download file start2");
|
|
done(isConflict ? SyncFileItem::Conflict : SyncFileItem::Success);
|
|
}
|
|
|
|
|
|
}
|