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tdebase/kioslave/trash/kio_trash.cpp

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/* This file is part of the KDE project
Copyright (C) 2004 David Faure <faure@kde.org>
This library is free software; you can redistribute it and/or
modify it under the terms of the GNU Library General Public
License as published by the Free Software Foundation; either
version 2 of the License, or (at your option) any later version.
This library 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
Library General Public License for more details.
You should have received a copy of the GNU Library General Public License
along with this library; see the file COPYING.LIB. If not, write to
the Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor,
Boston, MA 02110-1301, USA.
*/
#include "kio_trash.h"
#include <kio/job.h>
#include <kapplication.h>
#include <kdebug.h>
#include <klocale.h>
#include <klargefile.h>
#include <kcmdlineargs.h>
#include <kmimetype.h>
#include <kprocess.h>
#include <dcopclient.h>
#include <tqdatastream.h>
#include <tqtextstream.h>
#include <tqfile.h>
#include <tqeventloop.h>
#include <time.h>
#include <pwd.h>
#include <grp.h>
#include <sys/types.h>
#include <sys/stat.h>
#include <stdlib.h>
static const KCmdLineOptions options[] =
{
{ "+protocol", I18N_NOOP( "Protocol name" ), 0 },
{ "+pool", I18N_NOOP( "Socket name" ), 0 },
{ "+app", I18N_NOOP( "Socket name" ), 0 },
KCmdLineLastOption
};
extern "C" {
int KDE_EXPORT kdemain( int argc, char **argv )
{
//KInstance instance( "kio_trash" );
// KApplication is necessary to use kio_file
putenv(strdup("SESSION_MANAGER="));
KApplication::disableAutoDcopRegistration();
KCmdLineArgs::init(argc, argv, "kio_trash", 0, 0, 0, 0);
KCmdLineArgs::addCmdLineOptions( options );
KApplication app( false, false );
KCmdLineArgs *args = KCmdLineArgs::parsedArgs();
TrashProtocol slave( args->arg(0), args->arg(1), args->arg(2) );
slave.dispatchLoop();
return 0;
}
}
#define INIT_IMPL \
if ( !impl.init() ) { \
error( impl.lastErrorCode(), impl.lastErrorMessage() ); \
return; \
}
TrashProtocol::TrashProtocol( const TQCString& protocol, const TQCString &pool, const TQCString &app)
: SlaveBase(protocol, pool, app )
{
struct passwd *user = getpwuid( getuid() );
if ( user )
m_userName = TQString::fromLatin1(user->pw_name);
struct group *grp = getgrgid( getgid() );
if ( grp )
m_groupName = TQString::fromLatin1(grp->gr_name);
}
TrashProtocol::~TrashProtocol()
{
}
void TrashProtocol::restore( const KURL& trashURL )
{
int trashId;
TQString fileId, relativePath;
bool ok = TrashImpl::parseURL( trashURL, trashId, fileId, relativePath );
if ( !ok ) {
error( KIO::ERR_SLAVE_DEFINED, i18n( "Malformed URL %1" ).arg( trashURL.prettyURL() ) );
return;
}
TrashedFileInfo info;
ok = impl.infoForFile( trashId, fileId, info );
if ( !ok ) {
error( impl.lastErrorCode(), impl.lastErrorMessage() );
return;
}
KURL dest;
dest.setPath( info.origPath );
if ( !relativePath.isEmpty() )
dest.addPath( relativePath );
// Check that the destination directory exists, to improve the error code in case it doesn't.
const TQString destDir = dest.directory();
KDE_struct_stat buff;
if ( KDE_lstat( TQFile::encodeName( destDir ), &buff ) == -1 ) {
error( KIO::ERR_SLAVE_DEFINED,
i18n( "The directory %1 does not exist anymore, so it is not possible to restore this item to its original location. "
"You can either recreate that directory and use the restore operation again, or drag the item anywhere else to restore it." ).arg( destDir ) );
return;
}
copyOrMove( trashURL, dest, false /*overwrite*/, Move );
}
void TrashProtocol::rename( const KURL &oldURL, const KURL &newURL, bool overwrite )
{
INIT_IMPL;
kdDebug()<<"TrashProtocol::rename(): old="<<oldURL<<" new="<<newURL<<" overwrite=" << overwrite<<endl;
if ( oldURL.protocol() == "trash" && newURL.protocol() == "trash" ) {
error( KIO::ERR_CANNOT_RENAME, oldURL.prettyURL() );
return;
}
copyOrMove( oldURL, newURL, overwrite, Move );
}
void TrashProtocol::copy( const KURL &src, const KURL &dest, int /*permissions*/, bool overwrite )
{
INIT_IMPL;
kdDebug()<<"TrashProtocol::copy(): " << src << " " << dest << endl;
if ( src.protocol() == "trash" && dest.protocol() == "trash" ) {
error( KIO::ERR_UNSUPPORTED_ACTION, i18n( "This file is already in the trash bin." ) );
return;
}
copyOrMove( src, dest, overwrite, Copy );
}
void TrashProtocol::copyOrMove( const KURL &src, const KURL &dest, bool overwrite, CopyOrMove action )
{
if ( src.protocol() == "trash" && dest.isLocalFile() ) {
// Extracting (e.g. via dnd). Ignore original location stored in info file.
int trashId;
TQString fileId, relativePath;
bool ok = TrashImpl::parseURL( src, trashId, fileId, relativePath );
if ( !ok ) {
error( KIO::ERR_SLAVE_DEFINED, i18n( "Malformed URL %1" ).arg( src.prettyURL() ) );
return;
}
const TQString destPath = dest.path();
if ( TQFile::exists( destPath ) ) {
if ( overwrite ) {
ok = TQFile::remove( destPath );
Q_ASSERT( ok ); // ### TODO
} else {
error( KIO::ERR_FILE_ALREADY_EXIST, destPath );
return;
}
}
if ( action == Move ) {
kdDebug() << "calling moveFromTrash(" << destPath << " " << trashId << " " << fileId << ")" << endl;
ok = impl.moveFromTrash( destPath, trashId, fileId, relativePath );
} else { // Copy
kdDebug() << "calling copyFromTrash(" << destPath << " " << trashId << " " << fileId << ")" << endl;
ok = impl.copyFromTrash( destPath, trashId, fileId, relativePath );
}
if ( !ok ) {
error( impl.lastErrorCode(), impl.lastErrorMessage() );
} else {
if ( action == Move && relativePath.isEmpty() )
(void)impl.deleteInfo( trashId, fileId );
finished();
}
return;
} else if ( src.isLocalFile() && dest.protocol() == "trash" ) {
TQString dir = dest.directory();
//kdDebug() << "trashing a file to " << dir << endl;
// Trashing a file
// We detect the case where this isn't normal trashing, but
// e.g. if kwrite tries to save (moving tempfile over destination)
if ( dir.length() <= 1 && src.fileName() == dest.fileName() ) // new toplevel entry
{
const TQString srcPath = src.path();
// In theory we should use TrashImpl::parseURL to give the right filename to createInfo,
// in case the trash URL didn't contain the same filename as srcPath.
// But this can only happen with copyAs/moveAs, not available in the GUI
// for the trash (New/... or Rename from iconview/listview).
int trashId;
TQString fileId;
if ( !impl.createInfo( srcPath, trashId, fileId ) ) {
error( impl.lastErrorCode(), impl.lastErrorMessage() );
} else {
bool ok;
if ( action == Move ) {
kdDebug() << "calling moveToTrash(" << srcPath << " " << trashId << " " << fileId << ")" << endl;
ok = impl.moveToTrash( srcPath, trashId, fileId );
} else { // Copy
kdDebug() << "calling copyToTrash(" << srcPath << " " << trashId << " " << fileId << ")" << endl;
ok = impl.copyToTrash( srcPath, trashId, fileId );
}
if ( !ok ) {
(void)impl.deleteInfo( trashId, fileId );
error( impl.lastErrorCode(), impl.lastErrorMessage() );
} else {
// Inform caller of the final URL. Used by konq_undo.
const KURL url = impl.makeURL( trashId, fileId, TQString::null );
setMetaData( "trashURL-" + srcPath, url.url() );
finished();
}
}
return;
} else {
kdDebug() << "returning KIO::ERR_ACCESS_DENIED, it's not allowed to add a file to an existing trash directory" << endl;
// It's not allowed to add a file to an existing trash directory.
error( KIO::ERR_ACCESS_DENIED, dest.prettyURL() );
return;
}
} else
error( KIO::ERR_UNSUPPORTED_ACTION, "should never happen" );
}
static void addAtom(KIO::UDSEntry& entry, unsigned int ID, long long l, const TQString& s = TQString::null)
{
KIO::UDSAtom atom;
atom.m_uds = ID;
atom.m_long = l;
atom.m_str = s;
entry.append(atom);
}
void TrashProtocol::createTopLevelDirEntry(KIO::UDSEntry& entry)
{
entry.clear();
addAtom(entry, KIO::UDS_NAME, 0, ".");
addAtom(entry, KIO::UDS_FILE_TYPE, S_IFDIR);
addAtom(entry, KIO::UDS_ACCESS, 0700);
addAtom(entry, KIO::UDS_MIME_TYPE, 0, "inode/directory");
addAtom(entry, KIO::UDS_USER, 0, m_userName);
addAtom(entry, KIO::UDS_GROUP, 0, m_groupName);
}
void TrashProtocol::stat(const KURL& url)
{
INIT_IMPL;
const TQString path = url.path();
if( path.isEmpty() || path == "/" ) {
// The root is "virtual" - it's not a single physical directory
KIO::UDSEntry entry;
createTopLevelDirEntry( entry );
statEntry( entry );
finished();
} else {
int trashId;
TQString fileId, relativePath;
bool ok = TrashImpl::parseURL( url, trashId, fileId, relativePath );
if ( !ok ) {
// ######## do we still need this?
kdDebug() << k_funcinfo << url << " looks fishy, returning does-not-exist" << endl;
// A URL like trash:/file simply means that CopyJob is trying to see if
// the destination exists already (it made up the URL by itself).
error( KIO::ERR_DOES_NOT_EXIST, url.prettyURL() );
//error( KIO::ERR_SLAVE_DEFINED, i18n( "Malformed URL %1" ).arg( url.prettyURL() ) );
return;
}
const TQString filePath = impl.physicalPath( trashId, fileId, relativePath );
if ( filePath.isEmpty() ) {
error( impl.lastErrorCode(), impl.lastErrorMessage() );
return;
}
TQString fileName = filePath.section('/', -1, -1, TQString::SectionSkipEmpty);
TQString fileURL = TQString::null;
if ( url.path().length() > 1 ) {
fileURL = url.url();
}
KIO::UDSEntry entry;
TrashedFileInfo info;
ok = impl.infoForFile( trashId, fileId, info );
if ( ok )
ok = createUDSEntry( filePath, fileName, fileURL, entry, info );
if ( !ok ) {
error( KIO::ERR_COULD_NOT_STAT, url.prettyURL() );
}
statEntry( entry );
finished();
}
}
void TrashProtocol::del( const KURL &url, bool /*isfile*/ )
{
int trashId;
TQString fileId, relativePath;
bool ok = TrashImpl::parseURL( url, trashId, fileId, relativePath );
if ( !ok ) {
error( KIO::ERR_SLAVE_DEFINED, i18n( "Malformed URL %1" ).arg( url.prettyURL() ) );
return;
}
ok = relativePath.isEmpty();
if ( !ok ) {
error( KIO::ERR_ACCESS_DENIED, url.prettyURL() );
return;
}
ok = impl.del(trashId, fileId);
if ( !ok ) {
error( impl.lastErrorCode(), impl.lastErrorMessage() );
return;
}
finished();
}
void TrashProtocol::listDir(const KURL& url)
{
INIT_IMPL;
kdDebug() << "listdir: " << url << endl;
if ( url.path().length() <= 1 ) {
listRoot();
return;
}
int trashId;
TQString fileId;
TQString relativePath;
bool ok = TrashImpl::parseURL( url, trashId, fileId, relativePath );
if ( !ok ) {
error( KIO::ERR_SLAVE_DEFINED, i18n( "Malformed URL %1" ).arg( url.prettyURL() ) );
return;
}
//was: const TQString physicalPath = impl.physicalPath( trashId, fileId, relativePath );
// Get info for deleted directory - the date of deletion and orig path will be used
// for all the items in it, and we need the physicalPath.
TrashedFileInfo info;
ok = impl.infoForFile( trashId, fileId, info );
if ( !ok || info.physicalPath.isEmpty() ) {
error( impl.lastErrorCode(), impl.lastErrorMessage() );
return;
}
if ( !relativePath.isEmpty() ) {
info.physicalPath += "/";
info.physicalPath += relativePath;
}
// List subdir. Can't use kio_file here since we provide our own info...
kdDebug() << k_funcinfo << "listing " << info.physicalPath << endl;
TQStrList entryNames = impl.listDir( info.physicalPath );
totalSize( entryNames.count() );
KIO::UDSEntry entry;
TQStrListIterator entryIt( entryNames );
for (; entryIt.current(); ++entryIt) {
TQString fileName = TQFile::decodeName( entryIt.current() );
if ( fileName == ".." )
continue;
const TQString filePath = info.physicalPath + "/" + fileName;
// shouldn't be necessary
//const TQString url = TrashImpl::makeURL( trashId, fileId, relativePath + "/" + fileName );
entry.clear();
TrashedFileInfo infoForItem( info );
infoForItem.origPath += '/';
infoForItem.origPath += fileName;
if ( ok && createUDSEntry( filePath, fileName, TQString::null /*url*/, entry, infoForItem ) ) {
listEntry( entry, false );
}
}
entry.clear();
listEntry( entry, true );
finished();
}
bool TrashProtocol::createUDSEntry( const TQString& physicalPath, const TQString& fileName, const TQString& url, KIO::UDSEntry& entry, const TrashedFileInfo& info )
{
TQCString physicalPath_c = TQFile::encodeName( physicalPath );
KDE_struct_stat buff;
if ( KDE_lstat( physicalPath_c, &buff ) == -1 ) {
kdWarning() << "couldn't stat " << physicalPath << endl;
return false;
}
if (S_ISLNK(buff.st_mode)) {
char buffer2[ 1000 ];
int n = readlink( physicalPath_c, buffer2, 1000 );
if ( n != -1 ) {
buffer2[ n ] = 0;
}
addAtom( entry, KIO::UDS_LINK_DEST, 0, TQFile::decodeName( buffer2 ) );
// Follow symlink
// That makes sense in kio_file, but not in the trash, especially for the size
// #136876
#if 0
if ( KDE_stat( physicalPath_c, &buff ) == -1 ) {
// It is a link pointing to nowhere
buff.st_mode = S_IFLNK | S_IRWXU | S_IRWXG | S_IRWXO;
buff.st_mtime = 0;
buff.st_atime = 0;
buff.st_size = 0;
}
#endif
}
mode_t type = buff.st_mode & S_IFMT; // extract file type
mode_t access = buff.st_mode & 07777; // extract permissions
access &= 07555; // make it readonly, since it's in the trashcan
addAtom( entry, KIO::UDS_NAME, 0, fileName );
addAtom( entry, KIO::UDS_FILE_TYPE, type );
if ( !url.isEmpty() )
addAtom( entry, KIO::UDS_URL, 0, url );
KMimeType::Ptr mt = KMimeType::findByPath( physicalPath, buff.st_mode );
addAtom( entry, KIO::UDS_MIME_TYPE, 0, mt->name() );
addAtom( entry, KIO::UDS_ACCESS, access );
addAtom( entry, KIO::UDS_SIZE, buff.st_size );
addAtom( entry, KIO::UDS_USER, 0, m_userName ); // assumption
addAtom( entry, KIO::UDS_GROUP, 0, m_groupName ); // assumption
addAtom( entry, KIO::UDS_MODIFICATION_TIME, buff.st_mtime );
addAtom( entry, KIO::UDS_ACCESS_TIME, buff.st_atime ); // ## or use it for deletion time?
addAtom( entry, KIO::UDS_EXTRA, 0, info.origPath );
addAtom( entry, KIO::UDS_EXTRA, 0, info.deletionDate.toString( Qt::ISODate ) );
return true;
}
void TrashProtocol::listRoot()
{
INIT_IMPL;
const TrashedFileInfoList lst = impl.list();
totalSize( lst.count() );
KIO::UDSEntry entry;
createTopLevelDirEntry( entry );
listEntry( entry, false );
for ( TrashedFileInfoList::ConstIterator it = lst.begin(); it != lst.end(); ++it ) {
const KURL url = TrashImpl::makeURL( (*it).trashId, (*it).fileId, TQString::null );
KURL origURL;
origURL.setPath( (*it).origPath );
entry.clear();
if ( createUDSEntry( (*it).physicalPath, origURL.fileName(), url.url(), entry, *it ) )
listEntry( entry, false );
}
entry.clear();
listEntry( entry, true );
finished();
}
void TrashProtocol::special( const TQByteArray & data )
{
INIT_IMPL;
TQDataStream stream( data, IO_ReadOnly );
int cmd;
stream >> cmd;
switch (cmd) {
case 1:
if ( impl.emptyTrash() )
finished();
else
error( impl.lastErrorCode(), impl.lastErrorMessage() );
break;
case 2:
impl.migrateOldTrash();
finished();
break;
case 3:
{
KURL url;
stream >> url;
restore( url );
break;
}
default:
kdWarning(7116) << "Unknown command in special(): " << cmd << endl;
error( KIO::ERR_UNSUPPORTED_ACTION, TQString::number(cmd) );
break;
}
}
void TrashProtocol::put( const KURL& url, int /*permissions*/, bool /*overwrite*/, bool /*resume*/ )
{
INIT_IMPL;
kdDebug() << "put: " << url << endl;
// create deleted file. We need to get the mtime and original location from metadata...
// Maybe we can find the info file for url.fileName(), in case ::rename() was called first, and failed...
error( KIO::ERR_ACCESS_DENIED, url.prettyURL() );
}
void TrashProtocol::get( const KURL& url )
{
INIT_IMPL;
kdDebug() << "get() : " << url << endl;
if ( !url.isValid() ) {
kdDebug() << kdBacktrace() << endl;
error( KIO::ERR_SLAVE_DEFINED, i18n( "Malformed URL %1" ).arg( url.url() ) );
return;
}
if ( url.path().length() <= 1 ) {
error( KIO::ERR_IS_DIRECTORY, url.prettyURL() );
return;
}
int trashId;
TQString fileId;
TQString relativePath;
bool ok = TrashImpl::parseURL( url, trashId, fileId, relativePath );
if ( !ok ) {
error( KIO::ERR_SLAVE_DEFINED, i18n( "Malformed URL %1" ).arg( url.prettyURL() ) );
return;
}
const TQString physicalPath = impl.physicalPath( trashId, fileId, relativePath );
if ( physicalPath.isEmpty() ) {
error( impl.lastErrorCode(), impl.lastErrorMessage() );
return;
}
// Usually we run jobs in TrashImpl (for e.g. future kdedmodule)
// But for this one we wouldn't use DCOP for every bit of data...
KURL fileURL;
fileURL.setPath( physicalPath );
KIO::Job* job = KIO::get( fileURL );
connect( job, TQT_SIGNAL( data( KIO::Job*, const TQByteArray& ) ),
this, TQT_SLOT( slotData( KIO::Job*, const TQByteArray& ) ) );
connect( job, TQT_SIGNAL( mimetype( KIO::Job*, const TQString& ) ),
this, TQT_SLOT( slotMimetype( KIO::Job*, const TQString& ) ) );
connect( job, TQT_SIGNAL( result(KIO::Job *) ),
this, TQT_SLOT( jobFinished(KIO::Job *) ) );
qApp->eventLoop()->enterLoop();
}
void TrashProtocol::slotData( KIO::Job*, const TQByteArray&arr )
{
data( arr );
}
void TrashProtocol::slotMimetype( KIO::Job*, const TQString& mt )
{
mimeType( mt );
}
void TrashProtocol::jobFinished( KIO::Job* job )
{
if ( job->error() )
error( job->error(), job->errorText() );
else
finished();
qApp->eventLoop()->exitLoop();
}
#if 0
void TrashProtocol::mkdir( const KURL& url, int /*permissions*/ )
{
INIT_IMPL;
// create info about deleted dir
// ############ Problem: we don't know the original path.
// Let's try to avoid this case (we should get to copy() instead, for local files)
kdDebug() << "mkdir: " << url << endl;
TQString dir = url.directory();
if ( dir.length() <= 1 ) // new toplevel entry
{
// ## we should use TrashImpl::parseURL to give the right filename to createInfo
int trashId;
TQString fileId;
if ( !impl.createInfo( url.path(), trashId, fileId ) ) {
error( impl.lastErrorCode(), impl.lastErrorMessage() );
} else {
if ( !impl.mkdir( trashId, fileId, permissions ) ) {
(void)impl.deleteInfo( trashId, fileId );
error( impl.lastErrorCode(), impl.lastErrorMessage() );
} else
finished();
}
} else {
// Well it's not allowed to add a directory to an existing deleted directory.
error( KIO::ERR_ACCESS_DENIED, url.prettyURL() );
}
}
#endif
#include "kio_trash.moc"