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204 lines
7.0 KiB
204 lines
7.0 KiB
/*
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qgpgmekeylistjob.cpp
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This file is part of libkleopatra, the KDE keymanagement library
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Copyright (c) 2004 Klarälvdalens Datakonsult AB
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Libkleopatra is free software; you can redistribute it and/or
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modify it under the terms of the GNU General Public License as
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published by the Free Software Foundation; either version 2 of the
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License, or (at your option) any later version.
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Libkleopatra 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 GNU
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General Public License for more details.
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You should have received a copy of the GNU General Public License
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along with this program; if not, write to the Free Software
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Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
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In addition, as a special exception, the copyright holders give
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permission to link the code of this program with any edition of
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the TQt library by Trolltech AS, Norway (or with modified versions
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of TQt that use the same license as TQt), and distribute linked
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combinations including the two. You must obey the GNU General
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Public License in all respects for all of the code used other than
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TQt. If you modify this file, you may extend this exception to
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your version of the file, but you are not obligated to do so. If
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you do not wish to do so, delete this exception statement from
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your version.
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*/
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#ifdef HAVE_CONFIG_H
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#include <config.h>
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#endif
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#include "qgpgmekeylistjob.h"
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#include <qgpgme/eventloopinteractor.h>
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#include <gpgmepp/key.h>
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#include <gpgmepp/context.h>
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#include <gpgmepp/keylistresult.h>
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#include <gpg-error.h>
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#include <tdemessagebox.h>
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#include <tdelocale.h>
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#include <kdebug.h>
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#include <tqstringlist.h>
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#include <tqtimer.h>
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#include <algorithm>
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#include <stdlib.h>
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#include <string.h>
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#include <assert.h>
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Kleo::QGpgMEKeyListJob::QGpgMEKeyListJob( GpgME::Context * context )
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: KeyListJob( QGpgME::EventLoopInteractor::instance(), "Kleo::QGpgMEKeyListJob" ),
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QGpgMEJob( this, context ),
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mResult(), mSecretOnly( false )
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{
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assert( context );
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}
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Kleo::QGpgMEKeyListJob::~QGpgMEKeyListJob() {
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}
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void Kleo::QGpgMEKeyListJob::setup( const TQStringList & pats, bool secretOnly ) {
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assert( !patterns() );
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mSecretOnly = secretOnly;
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setPatterns( pats );
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}
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GpgME::Error Kleo::QGpgMEKeyListJob::start( const TQStringList & pats, bool secretOnly ) {
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setup( pats, secretOnly );
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hookupContextToEventLoopInteractor();
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connect( QGpgME::EventLoopInteractor::instance(),
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TQT_SIGNAL(nextKeyEventSignal(GpgME::Context*,const GpgME::Key&)),
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TQT_SLOT(slotNextKeyEvent(GpgME::Context*,const GpgME::Key&)) );
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// The communication channel between gpgme and gpgsm is limited in
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// the number of patterns that can be transported, but they won't
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// say to how much, so we need to find out ourselves if we get a
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// LINE_TOO_LONG error back...
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// We could of course just feed them single patterns, and that would
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// probably be easier, but the performance penalty would currently
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// be noticable.
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while ( const GpgME::Error err = mCtx->startKeyListing( patterns(), mSecretOnly ) ) {
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if ( err.code() == GPG_ERR_LINE_TOO_LONG ) {
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setChunkSize( chunkSize()/2 );
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if ( chunkSize() >= 1 ) {
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kdDebug(5150) << "QGpgMEKeyListJob::start(): retrying keylisting with chunksize " << chunkSize() << endl;
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continue;
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}
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} else if ( err.code() == GPG_ERR_EOF ) {
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kdDebug(5150) << "QGpgMEKeyListJob::start(): early end of keylisting, trying to fake an empty result" << endl;
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TQTimer::singleShot( 10, this, TQT_SLOT(slotFakeOperationDoneEvent()) );
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return GpgME::Error();
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}
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deleteLater();
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mResult = GpgME::KeyListResult( 0, err );
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return err;
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}
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mResult = GpgME::KeyListResult( 0, 0 );
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return 0;
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}
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GpgME::KeyListResult Kleo::QGpgMEKeyListJob::exec( const TQStringList & pats, bool secretOnly, std::vector<GpgME::Key> & keys ) {
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setup( pats, secretOnly );
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// The communication channel between gpgme and gpgsm is limited in
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// the number of patterns that can be transported, but they won't
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// say to how much, so we need to find out ourselves if we get a
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// LINE_TOO_LONG error back...
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// We could of course just feed them single patterns, and that would
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// probably be easier, but the performance penalty would currently
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// be noticable.
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for (;;) {
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keys.clear();
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mResult = attemptSyncKeyListing( keys );
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if ( !mResult.error() || mResult.error().code() != GPG_ERR_LINE_TOO_LONG )
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return mResult;
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// got LINE_TOO_LONG, try a smaller chunksize:
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setChunkSize( chunkSize()/2 );
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if ( chunkSize() < 1 )
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// chunks smaller than one can't be -> return the error.
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return mResult;
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kdDebug(5150) << "QGpgMEKeyListJob::exec(): retrying keylisting with chunksize " << chunkSize() << endl;
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}
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kdFatal(5150) << "QGpgMEKeyListJob::exec(): Oops, this is not supposed to happen!" << endl;
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return GpgME::KeyListResult();
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}
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GpgME::KeyListResult Kleo::QGpgMEKeyListJob::attemptSyncKeyListing( std::vector<GpgME::Key> & keys ) {
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GpgME::KeyListResult result;
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for ( const char* * chunk = patterns() ; chunk ; chunk = nextChunk() ) {
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if ( const GpgME::Error err = mCtx->startKeyListing( chunk, mSecretOnly ) )
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return GpgME::KeyListResult( 0, err );
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GpgME::Error err;
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do
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keys.push_back( mCtx->nextKey( err ) );
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while ( !err );
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keys.pop_back();
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result.mergeWith( mCtx->endKeyListing() );
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if ( result.error() )
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break;
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}
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return result;
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}
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void Kleo::QGpgMEKeyListJob::slotNextKeyEvent( GpgME::Context * context, const GpgME::Key & key ) {
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if ( context == mCtx )
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emit nextKey( key );
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}
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void Kleo::QGpgMEKeyListJob::slotFakeOperationDoneEvent() {
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const GpgME::KeyListResult res = mCtx->keyListResult();
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if ( !res.error().code() == GPG_ERR_EOF )
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kdDebug(5150) << "QGpgMEKeyListJob::slotFakeOperationDoneEvent: expected EOF, got "
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<< res.error().asString() << endl;
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mResult = GpgME::KeyListResult();
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emit done();
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emit result( mResult );
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deleteLater();
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}
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void Kleo::QGpgMEKeyListJob::slotOperationDoneEvent( GpgME::Context * context, const GpgME::Error & ) {
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if ( context != mCtx )
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return;
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mResult.mergeWith( mCtx->keyListResult() );
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if ( !mResult.error() )
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if ( const char* * chunk = nextChunk() ) {
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if ( const GpgME::Error err = mCtx->startKeyListing( chunk, mSecretOnly ) )
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mResult.mergeWith( GpgME::KeyListResult( 0, err ) );
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else
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return;
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}
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emit done();
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emit result( mResult );
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deleteLater();
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}
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void Kleo::QGpgMEKeyListJob::showErrorDialog( TQWidget * parent, const TQString & caption ) const {
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if ( !mResult.error() || mResult.error().isCanceled() )
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return;
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const TQString msg = i18n( "<qt><p>An error occurred while fetching "
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"the keys from the backend:</p>"
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"<p><b>%1</b></p></qt>" )
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.arg( TQString::fromLocal8Bit( mResult.error().asString() ) );
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KMessageBox::error( parent, msg, caption );
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}
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#include "qgpgmekeylistjob.moc"
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