* Massive set of changes to bring in all fixes and enhancements from the Enterprise PIM branch

* Ensured that the Trinity changes were applied on top of those enhancements, and any redundancy removed
* Added journal read support to the CalDAV resource
* Fixed CalDAV resource to use events URL for tasks and journals when separate URL checkbox unchecked


git-svn-id: svn://anonsvn.kde.org/home/kde/branches/trinity/kdepim@1170461 283d02a7-25f6-0310-bc7c-ecb5cbfe19da

1 files changed, 500 insertions, 0 deletions

diff --git a/kmail/backupjob.cpp b/kmail/backupjob.cpp
new file mode 100644
index 00000000..fd53997b
--- /dev/null
+++ b/kmail/backupjob.cpp
@@ -0,0 +1,500 @@
+/* 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"
+