mirror of
https://github.com/uroni/urbackup_backend.git
synced 2025-10-26 11:36:50 +00:00
859 lines
21 KiB
C++
859 lines
21 KiB
C++
/*************************************************************************
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* UrBackup - Client/Server backup system
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* Copyright (C) 2011-2016 Martin Raiber
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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 Affero General Public License as published by
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* the Free Software Foundation, either version 3 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,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU Affero General Public License for more details.
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*
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* You should have received a copy of the GNU Affero General Public License
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* along with this program. If not, see <http://www.gnu.org/licenses/>.
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**************************************************************************/
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#include "RestoreFiles.h"
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#include "ClientService.h"
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#include "../stringtools.h"
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#include "../urbackupcommon/filelist_utils.h"
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#include "RestoreDownloadThread.h"
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#include "../urbackupcommon/fileclient/FileClientChunked.h"
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#include "../urbackupcommon/fileclient/tcpstack.h"
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#include "../Interface/Server.h"
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#include "../Interface/ThreadPool.h"
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#include "clientdao.h"
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#include "../Interface/Server.h"
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#include <algorithm>
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#include "client.h"
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#include <stack>
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#include "../urbackupcommon/chunk_hasher.h"
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#include "database.h"
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#include "FileMetadataDownloadThread.h"
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namespace
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{
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class RestoreUpdaterThread : public IThread
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{
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public:
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RestoreUpdaterThread(int64 restore_id, int64 status_id, std::string server_token)
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: update_mutex(Server->createMutex()), stopped(false),
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update_cond(Server->createCondition()), curr_pc(-1),
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restore_id(restore_id), status_id(status_id), server_token(server_token)
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{}
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void operator()()
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{
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{
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IScopedLock lock(update_mutex.get());
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while (!stopped)
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{
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ClientConnector::updateRestorePc(restore_id, status_id, curr_pc, server_token);
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update_cond->wait(&lock, 60000);
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}
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}
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delete this;
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}
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void stop()
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{
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IScopedLock lock(update_mutex.get());
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stopped = true;
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update_cond->notify_all();
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}
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void update_pc(int new_pc)
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{
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IScopedLock lock(update_mutex.get());
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curr_pc = new_pc;
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update_cond->notify_all();
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}
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private:
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std::auto_ptr<IMutex> update_mutex;
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std::auto_ptr<ICondition> update_cond;
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bool stopped;
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int curr_pc;
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int64 restore_id;
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int64 status_id;
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std::string server_token;
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};
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class ScopedRestoreUpdater
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{
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public:
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ScopedRestoreUpdater(int64 restore_id, int64 status_id, std::string server_token)
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: restore_updater(new RestoreUpdaterThread(restore_id, status_id, server_token))
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{
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restore_updater_ticket = Server->getThreadPool()->execute(restore_updater);
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}
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void update_pc(int new_pc)
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{
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restore_updater->update_pc(new_pc);
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}
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~ScopedRestoreUpdater()
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{
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restore_updater->stop();
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Server->getThreadPool()->waitFor(restore_updater_ticket);
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}
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private:
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RestoreUpdaterThread* restore_updater;
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THREADPOOL_TICKET restore_updater_ticket;
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};
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}
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void RestoreFiles::operator()()
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{
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if (restore_declined)
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{
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log("Restore was declined by client", LL_ERROR);
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ClientConnector::restoreDone(log_id, status_id, restore_id, false, server_token);
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delete this;
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return;
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}
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db=Server->getDatabase(Server->getThreadID(), URBACKUPDB_CLIENT);
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FileClient fc(false, client_token, 3,
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true, this, NULL);
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log("Starting restore...", LL_INFO);
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{
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ScopedRestoreUpdater restore_updater(restore_id, status_id, server_token);
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if (!connectFileClient(fc))
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{
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log("Connecting for restore failed", LL_ERROR);
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ClientConnector::restoreDone(log_id, status_id, restore_id, false, server_token);
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return;
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}
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log("Loading file list...", LL_INFO);
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if (!downloadFilelist(fc))
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{
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ClientConnector::restoreDone(log_id, status_id, restore_id, false, server_token);
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return;
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}
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log("Calculating download size...", LL_INFO);
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int64 total_size = calculateDownloadSize();
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if (total_size == -1)
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{
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ClientConnector::restoreDone(log_id, status_id, restore_id, false, server_token);
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return;
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}
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FileClient fc_metadata(false, client_token, 3,
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true, this, NULL);
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if (!connectFileClient(fc_metadata))
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{
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log("Connecting for file metadata failed", LL_ERROR);
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ClientConnector::restoreDone(log_id, status_id, restore_id, false, server_token);
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return;
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}
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std::auto_ptr<client::FileMetadataDownloadThread> metadata_thread(new client::FileMetadataDownloadThread(*this, fc_metadata, client_token));
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THREADPOOL_TICKET metadata_dl = Server->getThreadPool()->execute(metadata_thread.get());
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int64 starttime = Server->getTimeMS();
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while (Server->getTimeMS() - starttime < 10000)
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{
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if (fc_metadata.isDownloading())
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{
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break;
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}
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}
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if (!fc_metadata.isDownloading())
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{
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log("Error starting metadata download", LL_INFO);
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restore_failed(fc, metadata_dl);
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return;
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}
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log("Downloading necessary file data...", LL_INFO);
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if (!downloadFiles(fc, total_size, restore_updater))
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{
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restore_failed(fc, metadata_dl);
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return;
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}
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restore_updater.update_pc(101);
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do
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{
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if (fc.InformMetadataStreamEnd(client_token) == ERR_TIMEOUT)
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{
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fc.Reconnect();
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fc.InformMetadataStreamEnd(client_token);
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}
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log("Waiting for metadata download stream to finish", LL_DEBUG);
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Server->wait(1000);
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metadata_thread->shutdown();
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} while (!Server->getThreadPool()->waitFor(metadata_dl, 10000));
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if (!metadata_thread->applyMetadata())
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{
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restore_failed(fc, metadata_dl);
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return;
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}
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}
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log("Restore finished successfully.", LL_INFO);
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ClientConnector::restoreDone(log_id, status_id, restore_id, true, server_token);
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delete this;
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}
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IPipe * RestoreFiles::new_fileclient_connection( )
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{
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return ClientConnector::getFileServConnection(server_token, 10000);
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}
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bool RestoreFiles::connectFileClient( FileClient& fc )
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{
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IPipe* np = new_fileclient_connection();
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if(np!=NULL)
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{
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fc.Connect(np);
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return true;
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}
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else
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{
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return false;
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}
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}
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bool RestoreFiles::downloadFilelist( FileClient& fc )
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{
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filelist = Server->openTemporaryFile();
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filelist_del.reset(filelist);
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if(filelist==NULL)
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{
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return false;
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}
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_u32 rc = fc.GetFile("clientdl_filelist", filelist, true, false, 0, false, 0);
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if(rc!=ERR_SUCCESS)
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{
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log("Error getting file list. Errorcode: "+FileClient::getErrorString(rc)+" ("+convert(rc)+")", LL_ERROR);
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return false;
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}
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return true;
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}
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int64 RestoreFiles::calculateDownloadSize()
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{
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std::vector<char> buffer;
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buffer.resize(32768);
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FileListParser filelist_parser;
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_u32 read;
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SFile data;
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std::map<std::string, std::string> extra;
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int64 total_size = 0;
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filelist->Seek(0);
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do
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{
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read = filelist->Read(buffer.data(), static_cast<_u32>(buffer.size()));
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for(_u32 i=0;i<read;++i)
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{
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if(filelist_parser.nextEntry(buffer[i], data, &extra))
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{
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if(data.size>0)
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{
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total_size+=data.size;
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}
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}
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}
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} while (read>0);
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return total_size;
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}
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bool RestoreFiles::downloadFiles(FileClient& fc, int64 total_size, ScopedRestoreUpdater& restore_updater)
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{
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std::vector<char> buffer;
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buffer.resize(32768);
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FileListParser filelist_parser;
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std::auto_ptr<FileClientChunked> fc_chunked = createFcChunked();
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if(fc_chunked.get()==NULL)
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{
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return false;
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}
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_u32 read;
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SFile data;
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std::map<std::string, std::string> extra;
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size_t depth = 0;
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std::string restore_path;
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std::string server_path = "clientdl";
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RestoreDownloadThread* restore_download = new RestoreDownloadThread(fc, *fc_chunked, client_token);
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THREADPOOL_TICKET restore_download_ticket = Server->getThreadPool()->execute(restore_download);
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std::string curr_files_dir;
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std::vector<SFileAndHash> curr_files;
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ClientDAO client_dao(db);
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size_t line=0;
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bool has_error=false;
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filelist->Seek(0);
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int64 laststatsupdate=Server->getTimeMS();
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int64 skipped_bytes = 0;
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std::vector<size_t> folder_items;
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folder_items.push_back(0);
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std::stack<std::vector<std::string> > folder_files;
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folder_files.push(std::vector<std::string>());
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std::vector<std::string> deletion_queue;
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std::vector<std::pair<std::string, std::string> > rename_queue;
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bool single_item=false;
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do
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{
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read = filelist->Read(buffer.data(), static_cast<_u32>(buffer.size()));
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for(_u32 i=0;i<read && !has_error;++i)
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{
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if(filelist_parser.nextEntry(buffer[i], data, &extra))
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{
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FileMetadata metadata;
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metadata.read(extra);
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if(depth==0 && extra.find("single_item")!=extra.end())
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{
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single_item=true;
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}
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int64 ctime=Server->getTimeMS();
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if(ctime-laststatsupdate>1000)
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{
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laststatsupdate=ctime;
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if(total_size==0)
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{
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restore_updater.update_pc(100);
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}
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else
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{
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int pcdone = (std::min)(100,(int)(((float)fc.getReceivedDataBytes() + (float)fc_chunked->getReceivedDataBytes() + skipped_bytes)/((float)total_size/100.f)+0.5f));;
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restore_updater.update_pc(pcdone);
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}
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}
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if(!data.isdir || data.name!="..")
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{
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for(size_t j=0;j<folder_items.size();++j)
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{
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++folder_items[j];
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}
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}
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if(data.isdir)
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{
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if(data.name!="..")
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{
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bool set_orig_path = false;
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if(!metadata.orig_path.empty())
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{
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restore_path = (metadata.orig_path);
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set_orig_path=true;
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}
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if(depth==0)
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{
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if(!os_directory_exists(os_file_prefix(restore_path)))
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{
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if(!os_create_dir_recursive(os_file_prefix(restore_path)))
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{
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log("Error recursively creating directory \""+restore_path+"\"", LL_ERROR);
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has_error=true;
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}
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}
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}
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else
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{
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if(!set_orig_path)
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{
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restore_path+=os_file_sep()+data.name;
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}
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if(!os_directory_exists(os_file_prefix(restore_path)))
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{
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if(!os_create_dir(os_file_prefix(restore_path)))
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{
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log("Error creating directory \""+restore_path+"\"", LL_ERROR);
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has_error=true;
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}
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}
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}
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#ifdef _WIN32
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std::string name_lower = strlower(data.name);
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#else
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std::string name_lower = data.name;
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#endif
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folder_files.top().push_back(name_lower);
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folder_items.push_back(0);
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folder_files.push(std::vector<std::string>());
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server_path+="/"+data.name;
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++depth;
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}
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else
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{
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--depth;
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if(!removeFiles(restore_path, folder_files, deletion_queue))
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{
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has_error=true;
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}
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server_path=ExtractFilePath(server_path, "/");
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restore_path=ExtractFilePath(restore_path, os_file_sep());
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restore_download->addToQueueFull(line, server_path, restore_path, 0,
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metadata, false, true, folder_items.back());
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folder_items.pop_back();
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folder_files.pop();
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}
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}
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else
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{
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std::string local_fn = restore_path + os_file_sep() + data.name;
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#ifdef _WIN32
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std::string name_lower = strlower(data.name);
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#else
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std::string name_lower = data.name;
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#endif
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std::string server_fn = server_path + "/" + data.name;
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folder_files.top().push_back(name_lower);
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str_map::iterator it_orig_path = extra.find("orig_path");
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if(it_orig_path!=extra.end())
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{
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local_fn = it_orig_path->second;
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restore_path = ExtractFilePath(local_fn, os_file_sep());
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}
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if(Server->fileExists(os_file_prefix(local_fn)))
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{
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if(restore_path!=curr_files_dir)
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{
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curr_files_dir = restore_path;
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#ifndef _WIN32
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std::string restore_path_lower = restore_path;
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#else
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std::string restore_path_lower = strlower(restore_path);
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#endif
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if(!client_dao.getFiles(restore_path_lower + os_file_sep(), curr_files))
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{
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curr_files.clear();
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}
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}
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std::string shahash;
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SFileAndHash search_file = {};
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search_file.name = data.name;
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std::vector<SFileAndHash>::iterator it_file = std::lower_bound(curr_files.begin(), curr_files.end(), search_file);
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if(it_file!=curr_files.end() && it_file->name == data.name)
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{
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SFile metadata = getFileMetadataWin(local_fn, true);
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if(!metadata.name.empty())
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{
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int64 change_indicator = metadata.last_modified;
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if(metadata.usn!=0)
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{
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change_indicator = metadata.usn;
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}
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if(!metadata.isdir
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&& metadata.size==it_file->size
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&& change_indicator==it_file->change_indicator
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&& !it_file->hash.empty())
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{
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shahash = it_file->hash;
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}
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}
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}
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IFile* orig_file = Server->openFile(os_file_prefix(local_fn), MODE_RW);
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#ifdef _WIN32
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if(orig_file==NULL)
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{
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size_t idx=0;
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std::string old_local_fn=local_fn;
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while(orig_file==NULL && idx<100)
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{
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local_fn=old_local_fn+"_"+convert(idx);
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++idx;
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orig_file = Server->openFile(os_file_prefix(local_fn), MODE_RW);
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}
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rename_queue.push_back(std::make_pair(local_fn, old_local_fn));
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}
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#endif
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if(orig_file==NULL)
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{
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log("Cannot open file \""+local_fn+"\" for writing. Not restoring file.", LL_ERROR);
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has_error=true;
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}
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else
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{
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IFile* chunkhashes = Server->openTemporaryFile();
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if(chunkhashes==NULL)
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{
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log("Cannot open temporary file for chunk hashes of file \""+local_fn+"\". Not restoring file.", LL_ERROR);
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has_error=true;
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delete orig_file;
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}
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else
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{
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bool calc_hashes=false;
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if(shahash.empty())
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{
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log("Calculating hashes of file \""+local_fn+"\"...", LL_DEBUG);
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shahash = build_chunk_hashs(orig_file, chunkhashes, NULL, true, NULL, false, NULL);
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calc_hashes = true;
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}
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if(shahash!=base64_decode_dash(extra["shahash"]))
|
|
{
|
|
if(!calc_hashes)
|
|
{
|
|
log("Calculating hashes of file \""+local_fn+"\"...", LL_DEBUG);
|
|
build_chunk_hashs(orig_file, chunkhashes, NULL, false, NULL, false, NULL);
|
|
}
|
|
|
|
restore_download->addToQueueChunked(line, server_fn, local_fn,
|
|
data.size, metadata, false, orig_file, chunkhashes);
|
|
}
|
|
else
|
|
{
|
|
restore_download->addToQueueFull(line, server_fn, local_fn,
|
|
data.size, metadata, false, true, 0);
|
|
|
|
std::string tmpfn = chunkhashes->getFilename();
|
|
delete chunkhashes;
|
|
Server->deleteFile(tmpfn);
|
|
delete orig_file;
|
|
}
|
|
}
|
|
}
|
|
}
|
|
else
|
|
{
|
|
restore_download->addToQueueFull(line, server_fn, local_fn,
|
|
data.size, metadata, false, false, 0);
|
|
}
|
|
}
|
|
++line;
|
|
}
|
|
}
|
|
|
|
} while (read>0 && !has_error);
|
|
|
|
if(!single_item)
|
|
{
|
|
if(!removeFiles(restore_path, folder_files, deletion_queue))
|
|
{
|
|
has_error=true;
|
|
}
|
|
}
|
|
|
|
restore_download->queueStop();
|
|
|
|
while(!Server->getThreadPool()->waitFor(restore_download_ticket, 1000))
|
|
{
|
|
if(total_size==0)
|
|
{
|
|
restore_updater.update_pc(100);
|
|
}
|
|
else
|
|
{
|
|
int pcdone = (std::min)(100,(int)(((float)fc.getReceivedDataBytes() + (float)fc_chunked->getReceivedDataBytes() + skipped_bytes)/((float)total_size/100.f)+0.5f));
|
|
restore_updater.update_pc(pcdone);
|
|
}
|
|
}
|
|
|
|
#ifdef _WIN32
|
|
bool request_restart=false;
|
|
|
|
if(!has_error && !restore_download->hasError())
|
|
{
|
|
if(!deletion_queue.empty())
|
|
{
|
|
request_restart = true;
|
|
|
|
if(!deleteFilesOnRestart(deletion_queue))
|
|
{
|
|
has_error=true;
|
|
}
|
|
}
|
|
|
|
if(!rename_queue.empty())
|
|
{
|
|
request_restart = true;
|
|
if(!renameFilesOnRestart(rename_queue))
|
|
{
|
|
has_error=true;
|
|
}
|
|
}
|
|
|
|
rename_queue = restore_download->getRenameQueue();
|
|
if(!rename_queue.empty())
|
|
{
|
|
request_restart = true;
|
|
if(!renameFilesOnRestart(rename_queue))
|
|
{
|
|
has_error=true;
|
|
}
|
|
}
|
|
}
|
|
|
|
if(request_restart)
|
|
{
|
|
ClientConnector::requestRestoreRestart();
|
|
}
|
|
#endif
|
|
|
|
if(restore_download->hasError())
|
|
{
|
|
log("Error while downloading files during restore", LL_ERROR);
|
|
return false;
|
|
}
|
|
|
|
return !has_error;
|
|
}
|
|
|
|
void RestoreFiles::log( const std::string& msg, int loglevel )
|
|
{
|
|
Server->Log(msg, loglevel);
|
|
if(loglevel>=LL_INFO)
|
|
{
|
|
ClientConnector::tochannelLog(log_id, msg, loglevel, server_token);
|
|
}
|
|
}
|
|
|
|
std::auto_ptr<FileClientChunked> RestoreFiles::createFcChunked()
|
|
{
|
|
IPipe* conn = new_fileclient_connection();
|
|
|
|
if(conn==NULL)
|
|
{
|
|
return std::auto_ptr<FileClientChunked>();
|
|
}
|
|
|
|
return std::auto_ptr<FileClientChunked>(new FileClientChunked(conn, true, &tcpstack, this,
|
|
NULL, client_token, NULL));
|
|
}
|
|
|
|
void RestoreFiles::restore_failed(FileClient& fc, THREADPOOL_TICKET metadata_dl)
|
|
{
|
|
log("Restore failed.", LL_INFO);
|
|
|
|
fc.InformMetadataStreamEnd(client_token);
|
|
|
|
Server->getThreadPool()->waitFor(metadata_dl);
|
|
|
|
ClientConnector::restoreDone(log_id, status_id, restore_id, false, server_token);
|
|
}
|
|
|
|
bool RestoreFiles::removeFiles( std::string restore_path,
|
|
std::stack<std::vector<std::string> > &folder_files, std::vector<std::string> &deletion_queue )
|
|
{
|
|
bool ret=true;
|
|
|
|
bool get_files_error;
|
|
std::vector<SFile> files = getFiles(os_file_prefix(restore_path), &get_files_error);
|
|
|
|
if(get_files_error)
|
|
{
|
|
log("Error enumerating files in \""+restore_path+"\"", LL_ERROR);
|
|
ret=false;
|
|
}
|
|
else
|
|
{
|
|
for(size_t j=0;j<files.size();++j)
|
|
{
|
|
std::string fn_lower = strlower(files[j].name);
|
|
|
|
if(std::find(folder_files.top().begin(), folder_files.top().end(), fn_lower)==folder_files.top().end())
|
|
{
|
|
std::string cpath = restore_path+os_file_sep()+files[j].name;
|
|
if(files[j].isdir)
|
|
{
|
|
if(!os_remove_nonempty_dir(os_file_prefix(cpath)))
|
|
{
|
|
log("Error deleting directory \""+restore_path+"\"", LL_WARNING);
|
|
#ifndef _WIN32
|
|
ret=false;
|
|
#else
|
|
deletion_queue.push_back(cpath);
|
|
#endif
|
|
}
|
|
}
|
|
else
|
|
{
|
|
if(!Server->deleteFile(os_file_prefix(cpath)))
|
|
{
|
|
log("Error deleting file \""+restore_path+"\"", LL_WARNING);
|
|
|
|
#ifndef _WIN32
|
|
ret=false;
|
|
#else
|
|
deletion_queue.push_back(cpath);
|
|
#endif
|
|
}
|
|
}
|
|
}
|
|
}
|
|
}
|
|
|
|
return ret;
|
|
}
|
|
|
|
bool RestoreFiles::deleteFilesOnRestart( std::vector<std::string> &deletion_queue_dirs )
|
|
{
|
|
for(size_t i=0;i<deletion_queue_dirs.size();++i)
|
|
{
|
|
int ftype = os_get_file_type(deletion_queue_dirs[i]);
|
|
|
|
if(ftype & EFileType_Directory)
|
|
{
|
|
if(!deleteFolderOnRestart(deletion_queue_dirs[i]))
|
|
{
|
|
log("Error deleting folder "+deletion_queue_dirs[i]+" on restart", LL_ERROR);
|
|
return false;
|
|
}
|
|
}
|
|
else
|
|
{
|
|
if(!deleteFileOnRestart(deletion_queue_dirs[i]))
|
|
{
|
|
log("Error deleting file "+deletion_queue_dirs[i]+" on restart", LL_ERROR);
|
|
return false;
|
|
}
|
|
}
|
|
}
|
|
|
|
return true;
|
|
}
|
|
|
|
bool RestoreFiles::deleteFileOnRestart( const std::string& fpath )
|
|
{
|
|
#ifndef _WIN32
|
|
return false;
|
|
#else
|
|
BOOL b = MoveFileExW(Server->ConvertToWchar(os_file_prefix(fpath)).c_str(), NULL, MOVEFILE_DELAY_UNTIL_REBOOT);
|
|
if(b!=TRUE)
|
|
{
|
|
log("Error deleting file "+fpath+" on restart", LL_ERROR);
|
|
}
|
|
return b==TRUE;
|
|
#endif
|
|
}
|
|
|
|
bool RestoreFiles::deleteFolderOnRestart( const std::string& fpath )
|
|
{
|
|
std::vector<SFile> files = getFiles(os_file_prefix(fpath));
|
|
|
|
for(size_t i=0;i<files.size();++i)
|
|
{
|
|
if(files[i].isdir)
|
|
{
|
|
if(!deleteFolderOnRestart(fpath + os_file_sep() + files[i].name))
|
|
{
|
|
return false;
|
|
}
|
|
}
|
|
else
|
|
{
|
|
if(!deleteFileOnRestart(fpath + os_file_sep() + files[i].name))
|
|
{
|
|
return false;
|
|
}
|
|
}
|
|
}
|
|
|
|
#ifndef _WIN32
|
|
return false;
|
|
#else
|
|
BOOL b = MoveFileExW(Server->ConvertToWchar(os_file_prefix(fpath)).c_str(), NULL, MOVEFILE_DELAY_UNTIL_REBOOT);
|
|
if(b!=TRUE)
|
|
{
|
|
log("Error deleting folder "+fpath+" on restart", LL_ERROR);
|
|
}
|
|
return b==TRUE;
|
|
#endif
|
|
}
|
|
|
|
bool RestoreFiles::renameFilesOnRestart( std::vector<std::pair<std::string, std::string> >& rename_queue )
|
|
{
|
|
#ifndef _WIN32
|
|
return false;
|
|
#else
|
|
for(size_t i=0;i<rename_queue.size();++i)
|
|
{
|
|
BOOL b = MoveFileExW(Server->ConvertToWchar(os_file_prefix(rename_queue[i].first)).c_str(),
|
|
Server->ConvertToWchar(os_file_prefix(rename_queue[i].second)).c_str(), MOVEFILE_DELAY_UNTIL_REBOOT);
|
|
if(b!=TRUE)
|
|
{
|
|
log("Error renaming "+rename_queue[i].first+" to "+rename_queue[i].second+" on Windows restart", LL_ERROR);
|
|
return false;
|
|
}
|
|
}
|
|
return true;
|
|
#endif
|
|
}
|
|
|