certmanager/lib

chiasmuslibrary.cpp

00001 /*
00002     chiasmuslibrary.cpp
00003 
00004     This file is part of libkleopatra, the KDE keymanagement library
00005     Copyright (c) 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 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 
00034 #include "chiasmuslibrary.h"
00035 
00036 #include "chiasmusbackend.h"
00037 
00038 #include "kleo/cryptoconfig.h"
00039 
00040 #include <klibloader.h>
00041 #include <kdebug.h>
00042 #include <klocale.h>
00043 
00044 #include <qfile.h>
00045 
00046 #include <vector>
00047 #include <algorithm>
00048 
00049 #include <cassert>
00050 #include <cstdlib>
00051 #include <cstring>
00052 
00053 Kleo::ChiasmusLibrary * Kleo::ChiasmusLibrary::self = 0;
00054 
00055 Kleo::ChiasmusLibrary::ChiasmusLibrary() : mXiaLibrary( 0 ) {
00056   self = this;
00057 }
00058 
00059 Kleo::ChiasmusLibrary::~ChiasmusLibrary() {
00060   //delete mXiaLibrary; // hmm, how to get rid of it, then?
00061 }
00062 
00063 Kleo::ChiasmusLibrary::main_func Kleo::ChiasmusLibrary::chiasmus( QString * reason ) const {
00064   assert( ChiasmusBackend::instance() );
00065   assert( ChiasmusBackend::instance()->config() );
00066   const CryptoConfigEntry * lib = ChiasmusBackend::instance()->config()->entry( "Chiasmus", "General", "lib" );
00067   assert( lib );
00068   const QString libfile = lib->urlValue().path();
00069   if ( !mXiaLibrary )
00070     mXiaLibrary = KLibLoader::self()->library( QFile::encodeName( libfile ) );
00071   if ( !mXiaLibrary ) {
00072     if ( reason )
00073       *reason = i18n( "Failed to load %1: %2" )
00074                 .arg( libfile,KLibLoader::self()->lastErrorMessage() );
00075     kdDebug(5150) << "ChiasmusLibrary: loading \"" << libfile
00076                   << "\" failed: " << KLibLoader::self()->lastErrorMessage() << endl;
00077     return 0;
00078   }
00079   if ( !mXiaLibrary->hasSymbol( "Chiasmus" ) ) {
00080     if ( reason )
00081       *reason = i18n( "Failed to load %1: %2" )
00082                 .arg( libfile, i18n( "Library does not contain the symbol \"Chiasmus\"." ) );
00083     kdDebug(5150) << "ChiasmusLibrary: loading \"" << libfile
00084                   << "\" failed: " << "Library does not contain the symbol \"Chiasmus\"." << endl;
00085     return 0;
00086   }
00087   void * symbol = mXiaLibrary->symbol( "Chiasmus" );
00088   assert( symbol );
00089   return ( main_func )symbol;
00090 }
00091 
00092 namespace {
00093   class ArgvProvider {
00094     char ** mArgv;
00095     int mArgc;
00096   public:
00097     ArgvProvider( const QValueVector<QCString> & args ) {
00098       mArgv = new char * [args.size()];
00099       for ( unsigned int i = 0 ; i < args.size() ; ++i )
00100         mArgv[i] = strdup( args[i].data() );
00101     }
00102     ~ArgvProvider() {
00103       std::for_each( mArgv, mArgv + mArgc, std::free );
00104       delete[] mArgv;
00105     }
00106     char ** argv() const { return mArgv; }
00107   };
00108 }
00109 
00110 int Kleo::ChiasmusLibrary::perform( const QValueVector<QCString> & args ) const {
00111   if ( main_func func = chiasmus() )
00112     return func( args.size(), ArgvProvider( args ).argv() );
00113   else
00114     return -1;
00115 }
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