certmanager/lib

cryptobackendfactory.h

00001 /*
00002     kleo/cryptobackendfactory.h
00003 
00004     This file is part of libkleopatra, the KDE keymanagement library
00005     Copyright (c) 2004,2005 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., 51 Franklin Street, Fifth Floor, Boston, MA  02110-1301  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 TQt library by Trolltech AS, Norway (or with modified versions
00024     of TQt that use the same license as TQt), 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     TQt.  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 #ifndef __KLEO_CRYPTOBACKENDFACTORY_H__
00034 #define __KLEO_CRYPTOBACKENDFACTORY_H__
00035 
00036 #include <tqobject.h>
00037 
00038 #include "cryptobackend.h"
00039 #include <tdepimmacros.h>
00040 
00041 #include <vector>
00042 #include <map>
00043 
00044 namespace Kleo {
00045   class BackendConfigWidget;
00046 }
00047 
00048 class TQString;
00049 class TDEConfig;
00050 
00051 namespace Kleo {
00052 
00053   struct lt_i_str {
00054     bool operator()( const char * one, const char * two ) const {
00055       return tqstricmp( one, two ) < 0;
00056     }
00057   };
00058 
00059   class KDE_EXPORT CryptoBackendFactory : public TQObject {
00060     Q_OBJECT
00061   
00062   protected:
00063     CryptoBackendFactory();
00064     ~CryptoBackendFactory();
00065   public:
00066     static CryptoBackendFactory * instance();
00067 
00068     const CryptoBackend::Protocol * smime() const;
00069     const CryptoBackend::Protocol * openpgp() const;
00070     const CryptoBackend::Protocol * protocol( const char * name ) const;
00071     CryptoConfig * config() const;
00072 
00073     const CryptoBackend * backend( unsigned int idx ) const;
00074 
00075     bool hasBackends() const;
00076 
00077     Kleo::BackendConfigWidget * configWidget( TQWidget * parent=0, const char * name=0 ) const;
00078 
00079     TDEConfig* configObject() const;
00080 
00081     // The preferred backend for smime (can be 0) - currently unused
00082     //const CryptoBackend* smimeBackend() const;
00083     // The preferred backend for openpgp (can be 0) - currently unused
00084     //const CryptoBackend* openpgpBackend() const;
00085 
00086     // For BackendConfigWidget to save the configuration
00087     // 0 means no backend selected.
00088     void setSMIMEBackend( const CryptoBackend* backend );
00089     void setOpenPGPBackend( const CryptoBackend* backend );
00090     void setProtocolBackend( const char * name, const CryptoBackend * backend );
00091 
00092     void scanForBackends( TQStringList * reasons=0 );
00093 
00094     const char * enumerateProtocols( int i ) const;
00095 
00096     bool knowsAboutProtocol( const char * name ) const;
00097 
00098   protected:
00099     std::vector<CryptoBackend*> mBackendList;
00100     mutable TDEConfig* mConfigObject;
00101     typedef std::map<const char *, const CryptoBackend*, lt_i_str> BackendMap;
00102     BackendMap mBackends;
00103     typedef std::vector<const char *> ProtocolSet;
00104     ProtocolSet mAvailableProtocols;
00105 
00106   private:
00107     const CryptoBackend * backendByName( const TQString& name ) const;
00108     void readConfig();
00109     CryptoBackendFactory( const CryptoBackendFactory & );
00110     void operator=( const CryptoBackendFactory & );
00111 
00112     static CryptoBackendFactory * mSelf;
00113   };
00114 
00115 
00116 }
00117 
00118 #endif // __KLEO_CRYPTOBACKENDFACTORY_H__