certmanager/lib Library API Documentation

cryptobackendfactory.cpp

00001 /*
00002     cryptobackendfactory.cpp
00003 
00004     This file is part of libkleopatra, the KDE key management library
00005     Copyright (c) 2001,2004 Klarälvdalens Datakonsult AB
00006 
00007     Libkleopatra is free software; you can redistribute it and/or
00008     modify it under the terms of the GNU General Public License as
00009     published by the Free Software Foundation; either version 2 of the
00010     License, or (at your option) any later version.
00011 
00012     Libkleopatra is distributed in the hope that it will be useful,
00013     but WITHOUT ANY WARRANTY; without even the implied warranty of
00014     MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
00015     General Public License for more details.
00016 
00017     You should have received a copy of the GNU General Public License
00018     along with this program; if not, write to the Free Software
00019     Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
00020 
00021     In addition, as a special exception, the copyright holders give
00022     permission to link the code of this program with any edition of
00023     the Qt library by Trolltech AS, Norway (or with modified versions
00024     of Qt that use the same license as Qt), and distribute linked
00025     combinations including the two.  You must obey the GNU General
00026     Public License in all respects for all of the code used other than
00027     Qt.  If you modify this file, you may extend this exception to
00028     your version of the file, but you are not obligated to do so.  If
00029     you do not wish to do so, delete this exception statement from
00030     your version.
00031 */
00032 
00033 #ifdef HAVE_CONFIG_H
00034 #include <config.h>
00035 #endif
00036 
00037 #include "cryptobackendfactory.h"
00038 
00039 #include <backends/qgpgme/qgpgmebackend.h>
00040 #include <backends/kpgp/pgp2backend.h>
00041 #include <backends/kpgp/pgp5backend.h>
00042 #include <backends/kpgp/pgp6backend.h>
00043 #include <backends/kpgp/gpg1backend.h>
00044 #include <ui/backendconfigwidget.h>
00045 
00046 #include <kconfig.h>
00047 #include <klocale.h>
00048 #include <kdebug.h>
00049 #include <kmessagebox.h>
00050 #include <kapplication.h>
00051 
00052 #include <assert.h>
00053 
00054 Kleo::CryptoBackendFactory * Kleo::CryptoBackendFactory::mSelf = 0;
00055 
00056 Kleo::CryptoBackendFactory::CryptoBackendFactory()
00057   : QObject( qApp, "CryptoBackendFactory::instance()" )
00058 {
00059   mSelf = this;
00060   mConfigObject = 0;
00061   mBackendList.push_back( new QGpgMEBackend() );
00062 #if 0 // disabled for kde-3.3
00063   mBackendList.push_back( new PGP2Backend() );
00064   mBackendList.push_back( new PGP5Backend() );
00065   mBackendList.push_back( new PGP6Backend() );
00066   mBackendList.push_back( new GPG1Backend() );
00067 #endif
00068   scanForBackends();
00069   readConfig();
00070 }
00071 
00072 Kleo::CryptoBackendFactory::~CryptoBackendFactory() {
00073   mSelf = 0;
00074 
00075   for ( QValueVector<CryptoBackend*>::iterator it = mBackendList.begin() ; it != mBackendList.end() ; ++it ) {
00076     delete *it;
00077     *it = 0;
00078   }
00079   delete mConfigObject;
00080   mConfigObject = 0;
00081 }
00082 
00083 Kleo::CryptoBackendFactory * Kleo::CryptoBackendFactory::instance() {
00084   if ( !mSelf )
00085     mSelf = new CryptoBackendFactory();
00086   return mSelf;
00087 }
00088 
00089 
00090 // const Kleo::CryptoBackend* Kleo::CryptoBackendFactory::smimeBackend() const {
00091 //   return mSMIMEBackend;
00092 // }
00093 
00094 // const Kleo::CryptoBackend* Kleo::CryptoBackendFactory::openpgpBackend() const {
00095 //   return mOpenPGPBackend;
00096 // }
00097 
00098 const Kleo::CryptoBackend::Protocol * Kleo::CryptoBackendFactory::smime() const {
00099   return mSMIMEBackend ? mSMIMEBackend->smime() : 0 ;
00100 }
00101 
00102 const Kleo::CryptoBackend::Protocol * Kleo::CryptoBackendFactory::openpgp() const {
00103   return mOpenPGPBackend ? mOpenPGPBackend->openpgp() : 0 ;
00104 }
00105 
00106 Kleo::CryptoConfig * Kleo::CryptoBackendFactory::config() const {
00107   // ## should we use mSMIMEBackend? mOpenPGPBackend? backend(0) i.e. always qgpgme?
00108   return backend( 0 ) ? backend( 0 )->config() : 0;
00109 }
00110 
00111 bool Kleo::CryptoBackendFactory::hasBackends() const {
00112   return !mBackendList.empty();
00113 }
00114 
00115 void Kleo::CryptoBackendFactory::scanForBackends( QStringList * reasons ) {
00116   if ( !reasons )
00117     return;
00118   for ( QValueVector<CryptoBackend*>::const_iterator it = mBackendList.begin() ; it != mBackendList.end() ; ++it ) {
00119     assert( *it );
00120     QString reason;
00121     if ( (*it)->supportsOpenPGP() && !(*it)->checkForOpenPGP( &reason ) ) {
00122       reasons->push_back( i18n("While scanning for OpenPGP support in backend %1:")
00123               .arg( (*it)->displayName() ) );
00124       reasons->push_back( "  " + reason );
00125     }
00126     if ( (*it)->supportsSMIME() && !(*it)->checkForSMIME( &reason ) ) {
00127       reasons->push_back( i18n("While scanning for S/MIME support in backend %1:")
00128               .arg( (*it)->displayName() ) );
00129       reasons->push_back( "  " + reason );
00130     }
00131   }
00132 }
00133 
00134 const Kleo::CryptoBackend * Kleo::CryptoBackendFactory::backend( unsigned int idx ) const {
00135   return ( idx < mBackendList.size() ) ? mBackendList[idx] : 0 ;
00136 }
00137 
00138 const Kleo::CryptoBackend * Kleo::CryptoBackendFactory::backendByName( const QString& name ) const {
00139   for ( QValueVector<CryptoBackend*>::const_iterator it = mBackendList.begin() ; it != mBackendList.end() ; ++it ) {
00140     if ( (*it)->name() == name )
00141       return *it;
00142   }
00143   return 0;
00144 }
00145 
00146 Kleo::BackendConfigWidget * Kleo::CryptoBackendFactory::configWidget( QWidget * parent, const char * name ) const {
00147   return new Kleo::BackendConfigWidget( mSelf, parent, name );
00148 }
00149 
00150 KConfig* Kleo::CryptoBackendFactory::configObject() const {
00151   if ( !mConfigObject )
00152     mConfigObject = new KConfig( "libkleopatrarc" );
00153   return mConfigObject;
00154 }
00155 
00156 void Kleo::CryptoBackendFactory::setSMIMEBackend( const CryptoBackend* backend ) {
00157   const QString name = backend ? backend->name() : QString::null;
00158   KConfigGroup group( configObject(), "Backends" );
00159   group.writeEntry( "SMIME", name );
00160   configObject()->sync();
00161   mSMIMEBackend = backend;
00162 }
00163 
00164 void Kleo::CryptoBackendFactory::setOpenPGPBackend( const CryptoBackend* backend ) {
00165   const QString name = backend ? backend->name() : QString::null;
00166   KConfigGroup group( configObject(), "Backends" );
00167   group.writeEntry( "OpenPGP", name );
00168   configObject()->sync();
00169   mOpenPGPBackend = backend;
00170 }
00171 
00172 void Kleo::CryptoBackendFactory::readConfig() {
00173   const KConfigGroup group( configObject(), "Backends" );
00174   const QString smimeBackend = group.readEntry( "SMIME", "gpgme" );
00175   mSMIMEBackend = backendByName( smimeBackend );
00176 
00177   const QString openPGPBackend = group.readEntry( "OpenPGP", "gpgme" );
00178   mOpenPGPBackend = backendByName( openPGPBackend );
00179 }
00180 
00181 #include "cryptobackendfactory.moc"
00182 
KDE Logo
This file is part of the documentation for certmanager/lib Library Version 3.3.2.
Documentation copyright © 1996-2004 the KDE developers.
Generated on Mon Apr 4 04:46:15 2005 by doxygen 1.3.9.1 written by Dimitri van Heesch, © 1997-2003