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tdeutils/ark/tar.cpp

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/*
ark -- archiver for the KDE project
Copyright (C)
1997-1999: Rob Palmbos palm9744@kettering.edu
1999: Francois-Xavier Duranceau duranceau@kde.org
1999-2000: Corel Corporation (author: Emily Ezust, emilye@corel.com)
2001: Corel Corporation (author: Michael Jarrett, michaelj@corel.com)
2001: Roberto Selbach Teixeira <maragato@conectiva.com>
2003: Georg Robbers <Georg.Robbers@urz.uni-hd.de>
2006: Henrique Pinto <henrique.pinto@kdemail.net>
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) any later version.
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, write to the Free Software
Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
*/
// Note: When maintaining tar files with ark, the user should be
// aware that these options have been improved (IMHO). When you append a file
// to a tarchive, tar does not check if the file exists already, and just
// tacks the new one on the end. ark deletes the old one.
// When you update a file that exists in a tarchive, it does check if
// it exists, but once again, it creates a duplicate at the end (only if
// the file is newer though). ark deletes the old one in this case as well.
//
// Basically, tar files are great for creating and extracting, but
// not especially for maintaining. The original purpose of a tar was of
// course, for tape backups, so this is not so surprising! -Emily
//
// C includes
#include <sys/types.h>
#include <sys/stat.h>
#include <fcntl.h>
#include <stdio.h>
#include <stdlib.h>
// Qt includes
#include <tqdir.h>
#include <tqregexp.h>
#include <tqeventloop.h>
// KDE includes
#include <kapplication.h>
#include <kdebug.h>
#include <klargefile.h>
#include <klocale.h>
#include <kmessagebox.h>
#include <ktempfile.h>
#include <kmimetype.h>
#include <kstandarddirs.h>
#include <ktempdir.h>
#include <kprocess.h>
#include <ktar.h>
// ark includes
#include "arkwidget.h"
#include "settings.h"
#include "tar.h"
#include "filelistview.h"
#include "tarlistingthread.h"
TarArch::TarArch( ArkWidget *_gui,
const TQString & _filename, const TQString & _openAsMimeType)
: Arch( _gui, _filename), m_tmpDir( 0 ), createTmpInProgress(false),
updateInProgress(false), deleteInProgress(false), fd(0),
m_pTmpProc( 0 ), m_pTmpProc2( 0 ), failed( false ),
m_dotslash( false ), m_listingThread( 0 )
{
m_filesToAdd = m_filesToRemove = TQStringList();
m_archiver_program = m_unarchiver_program = ArkSettings::tarExe();
verifyCompressUtilityIsAvailable( m_archiver_program );
verifyUncompressUtilityIsAvailable( m_unarchiver_program );
m_fileMimeType = _openAsMimeType;
if ( m_fileMimeType.isNull() )
m_fileMimeType = KMimeType::findByPath( _filename )->name();
kdDebug(1601) << "TarArch::TarArch: mimetype is " << m_fileMimeType << endl;
if ( m_fileMimeType == "application/x-tbz2" )
{
// ark treats .tar.bz2 as x-tbz, instead of duplicating the mimetype
// let's just alias it to the one we already handle.
m_fileMimeType = "application/x-tbz";
}
if ( m_fileMimeType == "application/x-tar" )
{
compressed = false;
}
else
{
compressed = true;
m_tmpDir = new KTempDir( _gui->tmpDir()
+ TQString::fromLatin1( "temp_tar" ) );
m_tmpDir->setAutoDelete( true );
m_tmpDir->qDir()->cd( m_tmpDir->name() );
// build the temp file name
KTempFile *pTempFile = new KTempFile( m_tmpDir->name(),
TQString::fromLatin1(".tar") );
tmpfile = pTempFile->name();
delete pTempFile;
kdDebug(1601) << "Tmpfile will be " << tmpfile << "\n" << endl;
}
}
TarArch::~TarArch()
{
delete m_tmpDir;
m_tmpDir = 0;
if ( m_listingThread && m_listingThread->finished() != true )
{
m_listingThread->wait();
delete m_listingThread;
m_listingThread = 0;
}
}
int TarArch::getEditFlag()
{
return Arch::Extract;
}
void TarArch::updateArch()
{
if (compressed)
{
updateInProgress = true;
int f_desc = KDE_open(TQFile::encodeName(m_filename), O_CREAT | O_TRUNC | O_WRONLY, 0666);
if (f_desc != -1)
fd = fdopen( f_desc, "w" );
else
fd = NULL;
KProcess *kp = m_currentProcess = new KProcess;
kp->clearArguments();
KProcess::Communication flag = KProcess::AllOutput;
if ( getCompressor() == "lzop" )
{
kp->setUsePty( KProcess::Stdin, false );
flag = KProcess::Stdout;
}
if ( !getCompressor().isNull() )
*kp << getCompressor() << "-c" << tmpfile;
else
*kp << "cat" << tmpfile;
connect(kp, TQT_SIGNAL(receivedStdout(KProcess*, char*, int)),
this, TQT_SLOT(updateProgress( KProcess *, char *, int )));
connect( kp, TQT_SIGNAL(receivedStderr(KProcess*, char*, int)),
(Arch *)this, TQT_SLOT(slotReceivedOutput(KProcess*, char*, int)));
connect(kp, TQT_SIGNAL(processExited(KProcess *)),
this, TQT_SLOT(updateFinished(KProcess *)) );
if ( !fd || kp->start(KProcess::NotifyOnExit, flag) == false)
{
KMessageBox::error(0, i18n("Trouble writing to the archive..."));
emit updateDone();
}
}
}
void TarArch::updateProgress( KProcess * _proc, char *_buffer, int _bufflen )
{
// we're trying to capture the output of a command like this
// gzip -c myarch.tar
// and feed the output to the archive
int size;
size = fwrite(_buffer, 1, _bufflen, fd);
if (size != _bufflen)
{
_proc->kill();
KMessageBox::error(0, i18n("Trouble writing to the archive..."));
kdWarning( 1601 ) << "trouble updating tar archive" << endl;
//kdFatal( 1601 ) << "trouble updating tar archive" << endl;
}
}
TQString TarArch::getCompressor()
{
if ( m_fileMimeType == "application/x-tarz" )
return TQString( "compress" );
if ( m_fileMimeType == "application/x-tgz" )
return TQString( "gzip" );
if ( m_fileMimeType == "application/x-tbz" )
return TQString( "bzip2" );
if ( m_fileMimeType == "application/x-tlz" )
return TQString( "lzma" );
if ( m_fileMimeType == "application/x-txz" )
return TQString( "xz" );
if( m_fileMimeType == "application/x-tzo" )
return TQString( "lzop" );
return TQString::null;
}
TQString TarArch::getUnCompressor()
{
if ( m_fileMimeType == "application/x-tarz" )
return TQString( "uncompress" );
if ( m_fileMimeType == "application/x-tgz" )
return TQString( "gunzip" );
if ( m_fileMimeType == "application/x-tbz" )
return TQString( "bunzip2" );
if ( m_fileMimeType == "application/x-tlz" )
return TQString( "unlzma" );
if ( m_fileMimeType == "application/x-txz" )
return TQString( "unxz" );
if( m_fileMimeType == "application/x-tzo" )
return TQString( "lzop" );
return TQString::null;
}
void
TarArch::open()
{
if ( compressed )
TQFile::remove(tmpfile); // just to make sure
setHeaders();
clearShellOutput();
// might as well plunk the output of tar -tvf in the shell output window...
//
// Now it's essential - used later to decide whether pathnames in the
// tar archive are plain or start with "./"
KProcess *kp = m_currentProcess = new KProcess;
*kp << m_archiver_program;
if ( compressed )
{
*kp << "--use-compress-program=" + getUnCompressor();
}
*kp << "-tvf" << m_filename;
m_buffer = "";
m_header_removed = false;
m_finished = false;
connect(kp, TQT_SIGNAL(processExited(KProcess *)),
this, TQT_SLOT(slotListingDone(KProcess *)));
connect(kp, TQT_SIGNAL(receivedStdout(KProcess*, char*, int)),
this, TQT_SLOT(slotReceivedOutput( KProcess *, char *, int )));
connect( kp, TQT_SIGNAL(receivedStderr(KProcess*, char*, int)),
this, TQT_SLOT(slotReceivedOutput(KProcess*, char*, int)));
if (kp->start(KProcess::NotifyOnExit, KProcess::AllOutput) == false)
{
KMessageBox::error( 0, i18n("Could not start a subprocess.") );
}
// We list afterwards because we want the signals at the end
// This unconfuses Extract Here somewhat
if ( m_fileMimeType == "application/x-tgz"
|| m_fileMimeType == "application/x-tbz" || !compressed )
{
openFirstCreateTempDone();
}
else
{
connect( this, TQT_SIGNAL( createTempDone() ), this, TQT_SLOT( openFirstCreateTempDone() ) );
createTmp();
}
}
void TarArch::openFirstCreateTempDone()
{
if ( compressed && ( m_fileMimeType != "application/x-tgz" )
&& ( m_fileMimeType != "application/x-tbz" ) )
{
disconnect( this, TQT_SIGNAL( createTempDone() ), this, TQT_SLOT( openFirstCreateTempDone() ) );
Q_ASSERT( !m_listingThread );
m_listingThread = new TarListingThread( this, tmpfile );
}
else {
Q_ASSERT( !m_listingThread );
m_listingThread = new TarListingThread( this, m_filename );
}
m_listingThread->start();
}
void TarArch::slotListingDone(KProcess *_kp)
{
const TQString list = getLastShellOutput();
FileListView *flv = m_gui->fileList();
if (flv!=NULL && flv->totalFiles()>0)
{
const TQString firstfile = ((FileLVI *) flv->firstChild())->fileName();
if (list.find(TQRegExp(TQString("\\s\\./%1[/\\n]").arg(firstfile)))>=0)
{
m_dotslash = true;
kdDebug(1601) << k_funcinfo << "archive has dot-slash" << endl;
}
else
{
if (list.find(TQRegExp(TQString("\\s%1[/\\n]").arg(firstfile)))>=0)
{
// archive doesn't have dot-slash
m_dotslash = false;
}
else
{
kdDebug(1601) << k_funcinfo << "cannot match '" << firstfile << "' in listing!" << endl;
}
}
}
delete _kp;
_kp = m_currentProcess = NULL;
}
void TarArch::create()
{
emit sigCreate(this, true, m_filename,
Arch::Extract | Arch::Delete | Arch::Add
| Arch::View);
}
void TarArch::setHeaders()
{
ColumnList list;
list.append(FILENAME_COLUMN);
list.append(PERMISSION_COLUMN);
list.append(OWNER_COLUMN);
list.append(GROUP_COLUMN);
list.append(SIZE_COLUMN);
list.append(TIMESTAMP_COLUMN);
list.append(LINK_COLUMN);
emit headers( list );
}
void TarArch::createTmp()
{
if ( compressed )
{
if ( !TQFile::exists(tmpfile) )
{
TQString strUncompressor = getUnCompressor();
// at least lzop doesn't want to pipe zerosize/nonexistent files
TQFile originalFile( m_filename );
if ( strUncompressor != "gunzip" && strUncompressor !="bunzip2" &&
( !originalFile.exists() || originalFile.size() == 0 ) )
{
TQFile temp( tmpfile );
temp.open( IO_ReadWrite );
temp.close();
emit createTempDone();
return;
}
// the tmpfile does not yet exist, so we create it.
createTmpInProgress = true;
int f_desc = KDE_open(TQFile::encodeName(tmpfile), O_CREAT | O_TRUNC | O_WRONLY, 0666);
if (f_desc != -1)
fd = fdopen( f_desc, "w" );
else
fd = NULL;
KProcess *kp = m_currentProcess = new KProcess;
kp->clearArguments();
kdDebug(1601) << "Uncompressor is " << strUncompressor << endl;
*kp << strUncompressor;
KProcess::Communication flag = KProcess::AllOutput;
if (strUncompressor == "lzop")
{
// setting up a pty for lzop, since it doesn't like stdin to
// be /dev/null ( "no filename allowed when reading from stdin" )
// - but it used to work without this ? ( Feb 13, 2003 )
kp->setUsePty( KProcess::Stdin, false );
flag = KProcess::Stdout;
*kp << "-d";
}
*kp << "-c" << m_filename;
connect(kp, TQT_SIGNAL(processExited(KProcess *)),
this, TQT_SLOT(createTmpFinished(KProcess *)));
connect(kp, TQT_SIGNAL(receivedStdout(KProcess*, char*, int)),
this, TQT_SLOT(createTmpProgress( KProcess *, char *, int )));
connect( kp, TQT_SIGNAL(receivedStderr(KProcess*, char*, int)),
this, TQT_SLOT(slotReceivedOutput(KProcess*, char*, int)));
if (kp->start(KProcess::NotifyOnExit, flag ) == false)
{
KMessageBox::error(0, i18n("Unable to fork a decompressor"));
emit sigOpen( this, false, TQString::null, 0 );
}
}
else
{
emit createTempDone();
kdDebug(1601) << "Temp tar already there..." << endl;
}
}
else
{
emit createTempDone();
}
}
void TarArch::createTmpProgress( KProcess * _proc, char *_buffer, int _bufflen )
{
// we're trying to capture the output of a command like this
// gunzip -c myarch.tar.gz
// and put the output into tmpfile.
int size;
size = fwrite(_buffer, 1, _bufflen, fd);
if (size != _bufflen)
{
_proc->kill();
KMessageBox::error(0, i18n("Trouble writing to the tempfile..."));
//kdFatal( 1601 ) << "Trouble writing to archive(createTmpProgress)" << endl;
kdWarning( 1601 ) << "Trouble writing to archive(createTmpProgress)" << endl;
//exit(99);
}
}
void TarArch::deleteOldFiles(const TQStringList &urls, bool bAddOnlyNew)
// because tar is broken. Used when appending: see addFile.
{
TQStringList list;
TQString str;
TQStringList::ConstIterator iter;
for (iter = urls.begin(); iter != urls.end(); ++iter )
{
KURL url( *iter );
// find the file entry in the archive listing
const FileLVI * lv = m_gui->fileList()->item( url.fileName() );
if ( !lv ) // it isn't in there, so skip it.
continue;
if (bAddOnlyNew)
{
// compare timestamps. If the file to be added is newer, delete the
// old. Otherwise we aren't adding it anyway, so we can go on to the next
// file with a "continue".
TQFileInfo fileInfo( url.path() );
TQDateTime addFileMTime = fileInfo.lastModified();
TQDateTime oldFileMTime = lv->timeStamp();
kdDebug(1601) << "Old file: " << oldFileMTime.date().year() << '-' <<
oldFileMTime.date().month() << '-' << oldFileMTime.date().day() <<
' ' << oldFileMTime.time().hour() << ':' <<
oldFileMTime.time().minute() << ':' << oldFileMTime.time().second() <<
endl;
kdDebug(1601) << "New file: " << addFileMTime.date().year() << '-' <<
addFileMTime.date().month() << '-' << addFileMTime.date().day() <<
' ' << addFileMTime.time().hour() << ':' <<
addFileMTime.time().minute() << ':' << addFileMTime.time().second() <<
endl;
if (oldFileMTime >= addFileMTime)
{
kdDebug(1601) << "Old time is newer or same" << endl;
continue; // don't add this file to the list to be deleted.
}
}
list.append(str);
kdDebug(1601) << "To delete: " << str << endl;
}
if(!list.isEmpty())
remove(&list);
else
emit removeDone();
}
void TarArch::addFile( const TQStringList& urls )
{
m_filesToAdd = urls;
// tar is broken. If you add a file that's already there, it gives you
// two entries for that name, whether you --append or --update. If you
// extract by name, it will give you
// the first one. If you extract all, the second one will overwrite the
// first. So we'll first delete all the old files matching the names of
// those in urls.
m_bNotifyWhenDeleteFails = false;
connect( this, TQT_SIGNAL( removeDone() ), this, TQT_SLOT( deleteOldFilesDone() ) );
deleteOldFiles(urls, ArkSettings::replaceOnlyWithNewer());
}
void TarArch::deleteOldFilesDone()
{
disconnect( this, TQT_SIGNAL( removeDone() ), this, TQT_SLOT( deleteOldFilesDone() ) );
m_bNotifyWhenDeleteFails = true;
connect( this, TQT_SIGNAL( createTempDone() ), this, TQT_SLOT( addFileCreateTempDone() ) );
createTmp();
}
void TarArch::addFileCreateTempDone()
{
disconnect( this, TQT_SIGNAL( createTempDone() ), this, TQT_SLOT( addFileCreateTempDone() ) );
TQStringList * urls = &m_filesToAdd;
KProcess *kp = m_currentProcess = new KProcess;
*kp << m_archiver_program;
if( ArkSettings::replaceOnlyWithNewer())
*kp << "uvf";
else
*kp << "rvf";
if (compressed)
*kp << tmpfile;
else
*kp << m_filename;
TQStringList::ConstIterator iter;
KURL url( urls->first() );
TQDir::setCurrent( url.directory() );
for (iter = urls->begin(); iter != urls->end(); ++iter )
{
KURL fileURL( *iter );
*kp << fileURL.fileName();
}
// debugging info
TQValueList<TQCString> list = kp->args();
TQValueList<TQCString>::Iterator strTemp;
for ( strTemp=list.begin(); strTemp != list.end(); ++strTemp )
{
kdDebug(1601) << *strTemp << " " << endl;
}
connect( kp, TQT_SIGNAL(receivedStdout(KProcess*, char*, int)),
this, TQT_SLOT(slotReceivedOutput(KProcess*, char*, int)));
connect( kp, TQT_SIGNAL(receivedStderr(KProcess*, char*, int)),
this, TQT_SLOT(slotReceivedOutput(KProcess*, char*, int)));
connect( kp, TQT_SIGNAL(processExited(KProcess*)), this,
TQT_SLOT(slotAddFinished(KProcess*)));
if (kp->start(KProcess::NotifyOnExit, KProcess::AllOutput) == false)
{
KMessageBox::error( 0, i18n("Could not start a subprocess.") );
emit sigAdd(false);
}
}
void TarArch::slotAddFinished(KProcess *_kp)
{
disconnect( _kp, TQT_SIGNAL(processExited(KProcess*)), this,
TQT_SLOT(slotAddFinished(KProcess*)));
m_pTmpProc = _kp;
m_filesToAdd = TQStringList();
if ( compressed )
{
connect( this, TQT_SIGNAL( updateDone() ), this, TQT_SLOT( addFinishedUpdateDone() ) );
updateArch();
}
else
addFinishedUpdateDone();
}
void TarArch::addFinishedUpdateDone()
{
if ( compressed )
disconnect( this, TQT_SIGNAL( updateDone() ), this, TQT_SLOT( addFinishedUpdateDone() ) );
Arch::slotAddExited( m_pTmpProc ); // this will delete _kp
m_pTmpProc = NULL;
}
void TarArch::unarchFileInternal()
{
TQString dest;
if (m_destDir.isEmpty() || m_destDir.isNull())
{
kdError(1601) << "There was no extract directory given." << endl;
return;
}
else dest = m_destDir;
TQString tmp;
KProcess *kp = m_currentProcess = new KProcess;
kp->clearArguments();
*kp << m_archiver_program;
if (compressed)
*kp << "--use-compress-program="+getUnCompressor();
TQString options = "-x";
if (!ArkSettings::extractOverwrite())
options += "k";
if (ArkSettings::preservePerms())
options += "p";
options += "f";
kdDebug(1601) << "Options were: " << options << endl;
*kp << options << m_filename << "-C" << dest;
// if the list is empty, no filenames go on the command line,
// and we then extract everything in the archive.
if (m_fileList)
{
for ( TQStringList::Iterator it = m_fileList->begin();
it != m_fileList->end(); ++it )
{
*kp << TQString(m_dotslash ? "./" : "")+(*it);
}
}
connect( kp, TQT_SIGNAL(receivedStdout(KProcess*, char*, int)),
this, TQT_SLOT(slotReceivedOutput(KProcess*, char*, int)));
connect( kp, TQT_SIGNAL(receivedStderr(KProcess*, char*, int)),
this, TQT_SLOT(slotReceivedOutput(KProcess*, char*, int)));
connect( kp, TQT_SIGNAL(processExited(KProcess*)), this,
TQT_SLOT(slotExtractExited(KProcess*)));
if (kp->start(KProcess::NotifyOnExit, KProcess::AllOutput) == false)
{
KMessageBox::error( 0, i18n("Could not start a subprocess.") );
emit sigExtract(false);
}
}
void TarArch::remove(TQStringList *list)
{
deleteInProgress = true;
m_filesToRemove = *list;
connect( this, TQT_SIGNAL( createTempDone() ), this, TQT_SLOT( removeCreateTempDone() ) );
createTmp();
}
void TarArch::removeCreateTempDone()
{
disconnect( this, TQT_SIGNAL( createTempDone() ), this, TQT_SLOT( removeCreateTempDone() ) );
TQString name, tmp;
KProcess *kp = m_currentProcess = new KProcess;
kp->clearArguments();
*kp << m_archiver_program << "--delete" << "-f" ;
if (compressed)
*kp << tmpfile;
else
*kp << m_filename;
TQStringList::Iterator it = m_filesToRemove.begin();
for ( ; it != m_filesToRemove.end(); ++it )
{
*kp << TQString(m_dotslash ? "./" : "")+(*it);
}
m_filesToRemove = TQStringList();
connect( kp, TQT_SIGNAL(receivedStdout(KProcess*, char*, int)),
this, TQT_SLOT(slotReceivedOutput(KProcess*, char*, int)));
connect( kp, TQT_SIGNAL(receivedStderr(KProcess*, char*, int)),
this, TQT_SLOT(slotReceivedOutput(KProcess*, char*, int)));
connect( kp, TQT_SIGNAL(processExited(KProcess*)), this,
TQT_SLOT(slotDeleteExited(KProcess*)));
if (kp->start(KProcess::NotifyOnExit, KProcess::AllOutput) == false)
{
KMessageBox::error( 0, i18n("Could not start a subprocess.") );
emit sigDelete(false);
}
}
void TarArch::slotDeleteExited(KProcess *_kp)
{
m_pTmpProc2 = _kp;
if ( compressed )
{
connect( this, TQT_SIGNAL( updateDone() ), this, TQT_SLOT( removeUpdateDone() ) );
updateArch();
}
else
removeUpdateDone();
}
void TarArch::removeUpdateDone()
{
if ( compressed )
disconnect( this, TQT_SIGNAL( updateDone() ), this, TQT_SLOT( removeUpdateDone() ) );
deleteInProgress = false;
emit removeDone();
Arch::slotDeleteExited( m_pTmpProc2 );
m_pTmpProc = NULL;
}
void TarArch::addDir(const TQString & _dirName)
{
TQStringList list;
list.append(_dirName);
addFile(list);
}
void TarArch::openFinished( KProcess * )
{
// do nothing
// turn off busy light (when someone makes one)
kdDebug(1601) << "Open finshed" << endl;
}
void TarArch::createTmpFinished( KProcess *_kp )
{
createTmpInProgress = false;
fclose(fd);
delete _kp;
_kp = m_currentProcess = NULL;
emit createTempDone();
}
void TarArch::updateFinished( KProcess *_kp )
{
fclose(fd);
updateInProgress = false;
delete _kp;
_kp = m_currentProcess = NULL;
emit updateDone();
}
void TarArch::customEvent( TQCustomEvent *ev )
{
if ( ev->type() == 65442 )
{
ListingEvent *event = static_cast<ListingEvent*>( ev );
switch ( event->status() )
{
case ListingEvent::Normal:
m_gui->fileList()->addItem( event->columns() );
break;
case ListingEvent::Error:
m_listingThread->wait();
delete m_listingThread;
m_listingThread = 0;
emit sigOpen( this, false, TQString::null, 0 );
break;
case ListingEvent::ListingFinished:
m_listingThread->wait();
delete m_listingThread;
m_listingThread = 0;
emit sigOpen( this, true, m_filename,
Arch::Extract | Arch::Delete | Arch::Add | Arch::View );
}
}
}
#include "tar.moc"
// kate: space-indent on;
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