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tdepim/kmail/backupjob.cpp

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/* Copyright 2009 Klarälvdalens Datakonsult AB
This program is free software; you can redistribute it and/or
modify it under the terms of the GNU General Public License as
published by the Free Software Foundation; either version 2 of
the License or (at your option) version 3 or any later version
accepted by the membership of KDE e.V. (or its successor approved
by the membership of KDE e.V.), which shall act as a proxy
defined in Section 14 of version 3 of the license.
This program is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
GNU General Public License for more details.
You should have received a copy of the GNU General Public License
along with this program. If not, see <http://www.gnu.org/licenses/>.
*/
#include "backupjob.h"
#include "kmmsgdict.h"
#include "kmfolder.h"
#include "kmfoldercachedimap.h"
#include "kmfolderdir.h"
#include "folderutil.h"
#include "progressmanager.h"
#include "kzip.h"
#include "ktar.h"
#include "kmessagebox.h"
#include "tqfile.h"
#include "tqfileinfo.h"
#include "tqstringlist.h"
using namespace KMail;
BackupJob::BackupJob( TQWidget *parent )
: TQObject( parent ),
mArchiveType( Zip ),
mRootFolder( 0 ),
mArchive( 0 ),
mParentWidget( parent ),
mCurrentFolderOpen( false ),
mArchivedMessages( 0 ),
mArchivedSize( 0 ),
mProgressItem( 0 ),
mAborted( false ),
mDeleteFoldersAfterCompletion( false ),
mCurrentFolder( 0 ),
mCurrentMessage( 0 ),
mCurrentJob( 0 )
{
}
BackupJob::~BackupJob()
{
mPendingFolders.clear();
if ( mArchive ) {
delete mArchive;
mArchive = 0;
}
}
void BackupJob::setRootFolder( KMFolder *rootFolder )
{
mRootFolder = rootFolder;
}
void BackupJob::setSaveLocation( const KURL &savePath )
{
mMailArchivePath = savePath;
}
void BackupJob::setArchiveType( ArchiveType type )
{
mArchiveType = type;
}
void BackupJob::setDeleteFoldersAfterCompletion( bool deleteThem )
{
mDeleteFoldersAfterCompletion = deleteThem;
}
TQString BackupJob::stripRootPath( const TQString &path ) const
{
TQString ret = path;
ret = ret.remove( mRootFolder->path() );
if ( ret.startsWith( "/" ) )
ret = ret.right( ret.length() - 1 );
return ret;
}
void BackupJob::queueFolders( KMFolder *root )
{
mPendingFolders.append( root );
KMFolderDir *dir = root->child();
if ( dir ) {
for ( KMFolderNode * node = dir->first() ; node ; node = dir->next() ) {
if ( node->isDir() )
continue;
KMFolder *folder = static_cast<KMFolder*>( node );
queueFolders( folder );
}
}
}
bool BackupJob::hasChildren( KMFolder *folder ) const
{
KMFolderDir *dir = folder->child();
if ( dir ) {
for ( KMFolderNode * node = dir->first() ; node ; node = dir->next() ) {
if ( !node->isDir() )
return true;
}
}
return false;
}
void BackupJob::cancelJob()
{
abort( i18n( "The operation was canceled by the user." ) );
}
void BackupJob::abort( const TQString &errorMessage )
{
// We could be called this twice, since killing the current job below will cause the job to fail,
// and that will call abort()
if ( mAborted )
return;
mAborted = true;
if ( mCurrentFolderOpen && mCurrentFolder ) {
mCurrentFolder->close( "BackupJob" );
mCurrentFolder = 0;
}
if ( mArchive && mArchive->isOpened() ) {
mArchive->close();
}
if ( mCurrentJob ) {
mCurrentJob->kill();
mCurrentJob = 0;
}
if ( mProgressItem ) {
mProgressItem->setComplete();
mProgressItem = 0;
// The progressmanager will delete it
}
TQString text = i18n( "Failed to archive the folder '%1'." ).arg( mRootFolder->name() );
text += "\n" + errorMessage;
KMessageBox::sorry( mParentWidget, text, i18n( "Archiving failed." ) );
deleteLater();
// Clean up archive file here?
}
void BackupJob::finish()
{
if ( mArchive->isOpened() ) {
mArchive->close();
if ( !mArchive->closeSucceeded() ) {
abort( i18n( "Unable to finalize the archive file." ) );
return;
}
}
mProgressItem->setStatus( i18n( "Archiving finished" ) );
mProgressItem->setComplete();
mProgressItem = 0;
TQFileInfo archiveFileInfo( mMailArchivePath.path() );
TQString text = i18n( "Archiving folder '%1' successfully completed. "
"The archive was written to the file '%2'." )
.arg( mRootFolder->name() ).arg( mMailArchivePath.path() );
text += "\n" + i18n( "1 message of size %1 was archived.",
"%n messages with the total size of %1 were archived.", mArchivedMessages )
.arg( KIO::convertSize( mArchivedSize ) );
text += "\n" + i18n( "The archive file has a size of %1." )
.arg( KIO::convertSize( archiveFileInfo.size() ) );
KMessageBox::information( mParentWidget, text, i18n( "Archiving finished." ) );
if ( mDeleteFoldersAfterCompletion ) {
// Some saftey checks first...
if ( archiveFileInfo.size() > 0 && ( mArchivedSize > 0 || mArchivedMessages == 0 ) ) {
// Sorry for any data loss!
FolderUtil::deleteFolder( mRootFolder, mParentWidget );
}
}
deleteLater();
}
void BackupJob::archiveNextMessage()
{
if ( mAborted )
return;
mCurrentMessage = 0;
if ( mPendingMessages.isEmpty() ) {
kdDebug(5006) << "===> All messages done in folder " << mCurrentFolder->name() << endl;
mCurrentFolder->close( "BackupJob" );
mCurrentFolderOpen = false;
archiveNextFolder();
return;
}
unsigned long serNum = mPendingMessages.front();
mPendingMessages.pop_front();
KMFolder *folder;
mMessageIndex = -1;
KMMsgDict::instance()->getLocation( serNum, &folder, &mMessageIndex );
if ( mMessageIndex == -1 ) {
kdWarning(5006) << "Failed to get message location for sernum " << serNum << endl;
abort( i18n( "Unable to retrieve a message for folder '%1'." ).arg( mCurrentFolder->name() ) );
return;
}
Q_ASSERT( folder == mCurrentFolder );
const KMMsgBase *base = mCurrentFolder->getMsgBase( mMessageIndex );
mUnget = base && !base->isMessage();
KMMessage *message = mCurrentFolder->getMsg( mMessageIndex );
if ( !message ) {
kdWarning(5006) << "Failed to retrieve message with index " << mMessageIndex << endl;
abort( i18n( "Unable to retrieve a message for folder '%1'." ).arg( mCurrentFolder->name() ) );
return;
}
kdDebug(5006) << "Going to get next message with subject " << message->subject() << ", "
<< mPendingMessages.size() << " messages left in the folder." << endl;
if ( message->isComplete() ) {
// Use a singleshot timer, or otherwise we risk ending up in a very big recursion
// for folders that have many messages
mCurrentMessage = message;
TQTimer::singleShot( 0, this, TQT_SLOT( processCurrentMessage() ) );
}
else if ( message->parent() ) {
mCurrentJob = message->parent()->createJob( message );
mCurrentJob->setCancellable( false );
connect( mCurrentJob, TQT_SIGNAL( messageRetrieved( KMMessage* ) ),
this, TQT_SLOT( messageRetrieved( KMMessage* ) ) );
connect( mCurrentJob, TQT_SIGNAL( result( KMail::FolderJob* ) ),
this, TQT_SLOT( folderJobFinished( KMail::FolderJob* ) ) );
mCurrentJob->start();
}
else {
kdWarning(5006) << "Message with subject " << mCurrentMessage->subject()
<< " is neither complete nor has a parent!" << endl;
abort( i18n( "Internal error while trying to retrieve a message from folder '%1'." )
.arg( mCurrentFolder->name() ) );
}
mProgressItem->setProgress( ( mProgressItem->progress() + 5 ) );
}
static int fileInfoToUnixPermissions( const TQFileInfo &fileInfo )
{
int perm = 0;
if ( fileInfo.permission( TQFileInfo::ExeOther ) ) perm += S_IXOTH;
if ( fileInfo.permission( TQFileInfo::WriteOther ) ) perm += S_IWOTH;
if ( fileInfo.permission( TQFileInfo::ReadOther ) ) perm += S_IROTH;
if ( fileInfo.permission( TQFileInfo::ExeGroup ) ) perm += S_IXGRP;
if ( fileInfo.permission( TQFileInfo::WriteGroup ) ) perm += S_IWGRP;
if ( fileInfo.permission( TQFileInfo::ReadGroup ) ) perm += S_IRGRP;
if ( fileInfo.permission( TQFileInfo::ExeOwner ) ) perm += S_IXUSR;
if ( fileInfo.permission( TQFileInfo::WriteOwner ) ) perm += S_IWUSR;
if ( fileInfo.permission( TQFileInfo::ReadOwner ) ) perm += S_IRUSR;
return perm;
}
void BackupJob::processCurrentMessage()
{
if ( mAborted )
return;
if ( mCurrentMessage ) {
kdDebug(5006) << "Processing message with subject " << mCurrentMessage->subject() << endl;
const DwString &messageDWString = mCurrentMessage->asDwString();
const uint messageSize = messageDWString.size();
const char *messageString = mCurrentMessage->asDwString().c_str();
TQString messageName;
TQFileInfo fileInfo;
if ( messageName.isEmpty() ) {
messageName = TQString::number( mCurrentMessage->getMsgSerNum() ); // IMAP doesn't have filenames
if ( mCurrentMessage->storage() ) {
fileInfo.setFile( mCurrentMessage->storage()->location() );
// TODO: what permissions etc to take when there is no storage file?
}
}
else {
// TODO: What if the message is not in the "cur" directory?
fileInfo.setFile( mCurrentFolder->location() + "/cur/" + mCurrentMessage->fileName() );
messageName = mCurrentMessage->fileName();
}
const TQString fileName = stripRootPath( mCurrentFolder->location() ) +
"/cur/" + messageName;
TQString user;
TQString group;
mode_t permissions = 0700;
time_t creationTime = time( 0 );
time_t modificationTime = time( 0 );
time_t accessTime = time( 0 );
if ( !fileInfo.fileName().isEmpty() ) {
user = fileInfo.owner();
group = fileInfo.group();
permissions = fileInfoToUnixPermissions( fileInfo );
creationTime = fileInfo.created().toTime_t();
modificationTime = fileInfo.lastModified().toTime_t();
accessTime = fileInfo.lastRead().toTime_t();
}
else {
kdWarning(5006) << "Unable to find file for message " << fileName << endl;
}
if ( !mArchive->writeFile( fileName, user, group, messageSize, permissions, accessTime,
modificationTime, creationTime, messageString ) ) {
abort( i18n( "Failed to write a message into the archive folder '%1'." ).arg( mCurrentFolder->name() ) );
return;
}
if ( mUnget ) {
Q_ASSERT( mMessageIndex >= 0 );
mCurrentFolder->unGetMsg( mMessageIndex );
}
mArchivedMessages++;
mArchivedSize += messageSize;
}
else {
// No message? According to ImapJob::slotGetMessageResult(), that means the message is no
// longer on the server. So ignore this one.
kdWarning(5006) << "Unable to download a message for folder " << mCurrentFolder->name() << endl;
}
archiveNextMessage();
}
void BackupJob::messageRetrieved( KMMessage *message )
{
mCurrentMessage = message;
processCurrentMessage();
}
void BackupJob::folderJobFinished( KMail::FolderJob *job )
{
if ( mAborted )
return;
// The job might finish after it has emitted messageRetrieved(), in which case we have already
// started a new job. Don't set the current job to 0 in that case.
if ( job == mCurrentJob ) {
mCurrentJob = 0;
}
if ( job->error() ) {
if ( mCurrentFolder )
abort( i18n( "Downloading a message in folder '%1' failed." ).arg( mCurrentFolder->name() ) );
else
abort( i18n( "Downloading a message in the current folder failed." ) );
}
}
bool BackupJob::writeDirHelper( const TQString &directoryPath, const TQString &permissionPath )
{
TQFileInfo fileInfo( permissionPath );
TQString user = fileInfo.owner();
TQString group = fileInfo.group();
mode_t permissions = fileInfoToUnixPermissions( fileInfo );
time_t creationTime = fileInfo.created().toTime_t();
time_t modificationTime = fileInfo.lastModified().toTime_t();
time_t accessTime = fileInfo.lastRead().toTime_t();
return mArchive->writeDir( stripRootPath( directoryPath ), user, group, permissions, accessTime,
modificationTime, creationTime );
}
void BackupJob::archiveNextFolder()
{
if ( mAborted )
return;
if ( mPendingFolders.isEmpty() ) {
finish();
return;
}
mCurrentFolder = mPendingFolders.take( 0 );
kdDebug(5006) << "===> Archiving next folder: " << mCurrentFolder->name() << endl;
mProgressItem->setStatus( i18n( "Archiving folder %1" ).arg( mCurrentFolder->name() ) );
if ( mCurrentFolder->open( "BackupJob" ) != 0 ) {
abort( i18n( "Unable to open folder '%1'.").arg( mCurrentFolder->name() ) );
return;
}
mCurrentFolderOpen = true;
const TQString folderName = mCurrentFolder->name();
bool success = true;
if ( hasChildren( mCurrentFolder ) ) {
if ( !writeDirHelper( mCurrentFolder->subdirLocation(), mCurrentFolder->subdirLocation() ) )
success = false;
}
if ( !writeDirHelper( mCurrentFolder->location(), mCurrentFolder->location() ) )
success = false;
if ( !writeDirHelper( mCurrentFolder->location() + "/cur", mCurrentFolder->location() ) )
success = false;
if ( !writeDirHelper( mCurrentFolder->location() + "/new", mCurrentFolder->location() ) )
success = false;
if ( !writeDirHelper( mCurrentFolder->location() + "/tmp", mCurrentFolder->location() ) )
success = false;
if ( !success ) {
abort( i18n( "Unable to create folder structure for folder '%1' within archive file." )
.arg( mCurrentFolder->name() ) );
return;
}
for ( int i = 0; i < mCurrentFolder->count( false /* no cache */ ); i++ ) {
unsigned long serNum = KMMsgDict::instance()->getMsgSerNum( mCurrentFolder, i );
if ( serNum == 0 ) {
// Uh oh
kdWarning(5006) << "Got serial number zero in " << mCurrentFolder->name()
<< " at index " << i << "!" << endl;
// TODO: handle error in a nicer way. this is _very_ bad
abort( i18n( "Unable to backup messages in folder '%1', the index file is corrupted." )
.arg( mCurrentFolder->name() ) );
return;
}
else
mPendingMessages.append( serNum );
}
archiveNextMessage();
}
// TODO
// - error handling
// - import
// - connect to progressmanager, especially abort
// - messagebox when finished (?)
// - ui dialog
// - use correct permissions
// - save index and serial number?
// - guarded pointers for folders
// - online IMAP: check mails first, so sernums are up-to-date?
// - "ignore errors"-mode, with summary how many messages couldn't be archived?
// - do something when the user quits KMail while the backup job is running
// - run in a thread?
// - delete source folder after completion. dangerous!!!
//
// BUGS
// - Online IMAP: Test Mails -> Test%20Mails
// - corrupted sernums indices stop backup job
void BackupJob::start()
{
Q_ASSERT( !mMailArchivePath.isEmpty() );
Q_ASSERT( mRootFolder );
queueFolders( mRootFolder );
switch ( mArchiveType ) {
case Zip: {
KZip *zip = new KZip( mMailArchivePath.path() );
zip->setCompression( KZip::DeflateCompression );
mArchive = zip;
break;
}
case Tar: {
mArchive = new KTar( mMailArchivePath.path(), "application/x-tar" );
break;
}
case TarGz: {
mArchive = new KTar( mMailArchivePath.path(), "application/x-gzip" );
break;
}
case TarBz2: {
mArchive = new KTar( mMailArchivePath.path(), "application/x-bzip2" );
break;
}
}
kdDebug(5006) << "Starting backup." << endl;
if ( !mArchive->open( IO_WriteOnly ) ) {
abort( i18n( "Unable to open archive for writing." ) );
return;
}
mProgressItem = KPIM::ProgressManager::createProgressItem(
"BackupJob",
i18n( "Archiving" ),
TQString(),
true );
mProgressItem->setUsesBusyIndicator( true );
connect( mProgressItem, TQT_SIGNAL(progressItemCanceled(KPIM::ProgressItem*)),
this, TQT_SLOT(cancelJob()) );
archiveNextFolder();
}
#include "backupjob.moc"