diff options
Diffstat (limited to 'certmanager/lib/kleo/cryptobackendfactory.cpp')
| -rw-r--r-- | certmanager/lib/kleo/cryptobackendfactory.cpp | 275 |
1 files changed, 275 insertions, 0 deletions
diff --git a/certmanager/lib/kleo/cryptobackendfactory.cpp b/certmanager/lib/kleo/cryptobackendfactory.cpp new file mode 100644 index 000000000..c56a7096f --- /dev/null +++ b/certmanager/lib/kleo/cryptobackendfactory.cpp @@ -0,0 +1,275 @@ +/* + cryptobackendfactory.cpp + + This file is part of libkleopatra, the KDE key management library + Copyright (c) 2001,2004,2005 Klarälvdalens Datakonsult AB + + Libkleopatra is free software; you can redistribute it and/or + modify it under the terms of the GNU General Public License as + published by the Free Software Foundation; either version 2 of the + License, or (at your option) any later version. + + Libkleopatra 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 + General Public License for more details. + + You should have received a copy of the GNU General Public License + along with this program; if not, write to the Free Software + Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA + + In addition, as a special exception, the copyright holders give + permission to link the code of this program with any edition of + the Qt library by Trolltech AS, Norway (or with modified versions + of Qt that use the same license as Qt), and distribute linked + combinations including the two. You must obey the GNU General + Public License in all respects for all of the code used other than + Qt. If you modify this file, you may extend this exception to + your version of the file, but you are not obligated to do so. If + you do not wish to do so, delete this exception statement from + your version. +*/ + +#ifdef HAVE_CONFIG_H +#include <config.h> +#endif + +#include "cryptobackendfactory.h" + +#include <backends/qgpgme/qgpgmebackend.h> +#if 0 // disabled for kde-3.3 +#include <backends/kpgp/pgp2backend.h> +#include <backends/kpgp/pgp5backend.h> +#include <backends/kpgp/pgp6backend.h> +#include <backends/kpgp/gpg1backend.h> +#endif +#include <backends/chiasmus/chiasmusbackend.h> +#include <ui/backendconfigwidget.h> + +#include <kconfig.h> +#include <klocale.h> +#include <kdebug.h> +#include <kmessagebox.h> +#include <kapplication.h> + +#include <iterator> +#include <algorithm> + +#include <cassert> + +Kleo::CryptoBackendFactory * Kleo::CryptoBackendFactory::mSelf = 0; + +static const char * availableProtocols[] = { + "Chiasmus", + "OpenPGP", "SMIME", +}; +static const unsigned int numAvailableProtocols = sizeof availableProtocols / sizeof *availableProtocols; + +Kleo::CryptoBackendFactory::CryptoBackendFactory() + : QObject( qApp, "CryptoBackendFactory::instance()" ), + mConfigObject( 0 ), + mAvailableProtocols( availableProtocols, availableProtocols + numAvailableProtocols ) +{ + mBackendList.push_back( new QGpgMEBackend() ); +#if 0 // disabled for kde-3.3 + mBackendList.push_back( new PGP2Backend() ); + mBackendList.push_back( new PGP5Backend() ); + mBackendList.push_back( new PGP6Backend() ); + mBackendList.push_back( new GPG1Backend() ); +#endif + mBackendList.push_back( new ChiasmusBackend() ); + scanForBackends(); + readConfig(); + + mSelf = this; // last! +} + +Kleo::CryptoBackendFactory::~CryptoBackendFactory() { + mSelf = 0; // first! + + for ( std::vector<CryptoBackend*>::iterator it = mBackendList.begin() ; it != mBackendList.end() ; ++it ) { + delete *it; + *it = 0; + } + delete mConfigObject; + mConfigObject = 0; +} + +Kleo::CryptoBackendFactory * Kleo::CryptoBackendFactory::instance() { + if ( !mSelf ) + mSelf = new CryptoBackendFactory(); + return mSelf; +} + + +// const Kleo::CryptoBackend* Kleo::CryptoBackendFactory::smimeBackend() const { +// return mSMIMEBackend; +// } + +// const Kleo::CryptoBackend* Kleo::CryptoBackendFactory::openpgpBackend() const { +// return mOpenPGPBackend; +// } + +const Kleo::CryptoBackend::Protocol * Kleo::CryptoBackendFactory::smime() const { + const BackendMap::const_iterator it = mBackends.find( "SMIME" ); + if ( it == mBackends.end() ) + return 0; + if ( !it->second ) + return 0; + return it->second->smime(); +} + +const Kleo::CryptoBackend::Protocol * Kleo::CryptoBackendFactory::openpgp() const { + const BackendMap::const_iterator it = mBackends.find( "OpenPGP" ); + if ( it == mBackends.end() ) + return 0; + if ( !it->second ) + return 0; + return it->second->openpgp(); +} + +const Kleo::CryptoBackend::Protocol * Kleo::CryptoBackendFactory::protocol( const char * name ) const { + const BackendMap::const_iterator it = mBackends.find( name ); + if ( it == mBackends.end() ) + return 0; + if ( !it->second ) + return 0; + return it->second->protocol( name ); +} + +Kleo::CryptoConfig * Kleo::CryptoBackendFactory::config() const { + // ## should we use mSMIMEBackend? mOpenPGPBackend? backend(0) i.e. always qgpgme? + return backend( 0 ) ? backend( 0 )->config() : 0; +} + +bool Kleo::CryptoBackendFactory::hasBackends() const { + return !mBackendList.empty(); +} + +void Kleo::CryptoBackendFactory::scanForBackends( QStringList * reasons ) { + for ( std::vector<CryptoBackend*>::const_iterator it = mBackendList.begin() ; it != mBackendList.end() ; ++it ) { + assert( *it ); + for ( int i = 0 ; const char * protocol = (*it)->enumerateProtocols( i ) ; ++i ) { + QString reason; + if ( (*it)->supportsProtocol( protocol ) && !(*it)->checkForProtocol( protocol, &reason ) ) { + if ( reasons ) { + reasons->push_back( i18n("While scanning for %1 support in backend %2:") + .arg( protocol, (*it)->displayName() ) ); + reasons->push_back( " " + reason ); + } + } + } + } +} + +const Kleo::CryptoBackend * Kleo::CryptoBackendFactory::backend( unsigned int idx ) const { + return ( idx < mBackendList.size() ) ? mBackendList[idx] : 0 ; +} + +const Kleo::CryptoBackend * Kleo::CryptoBackendFactory::backendByName( const QString& name ) const { + for ( std::vector<CryptoBackend*>::const_iterator it = mBackendList.begin() ; it != mBackendList.end() ; ++it ) { + if ( (*it)->name() == name ) + return *it; + } + return 0; +} + +Kleo::BackendConfigWidget * Kleo::CryptoBackendFactory::configWidget( QWidget * parent, const char * name ) const { + return new Kleo::BackendConfigWidget( mSelf, parent, name ); +} + +KConfig* Kleo::CryptoBackendFactory::configObject() const { + if ( !mConfigObject ) + // this is unsafe. We're a lib, used by concurrent apps. + mConfigObject = new KConfig( "libkleopatrarc" ); + return mConfigObject; +} + +void Kleo::CryptoBackendFactory::setSMIMEBackend( const CryptoBackend* backend ) { + setProtocolBackend( "SMIME", backend ); +} + +void Kleo::CryptoBackendFactory::setOpenPGPBackend( const CryptoBackend* backend ) { + setProtocolBackend( "OpenPGP", backend ); +} + +void Kleo::CryptoBackendFactory::setProtocolBackend( const char * protocol, const CryptoBackend * backend ) { + const QString name = backend ? backend->name() : QString::null ; + KConfigGroup group( configObject(), "Backends" ); + group.writeEntry( protocol, name ); + configObject()->sync(); + mBackends[protocol] = backend; +} + +static const char * defaultBackend( const char * proto ) { + static const struct { + const char * proto; + const char * backend; + } defaults[] = { + { "OpenPGP", "gpgme" }, + { "SMIME", "gpgme" }, + { "Chiasmus", "chiasmus" }, + }; + for ( unsigned int i = 0 ; i < sizeof defaults / sizeof *defaults ; ++i ) + if ( qstricmp( proto, defaults[i].proto ) == 0 ) + return defaults[i].backend; + return 0; +} + +void Kleo::CryptoBackendFactory::readConfig() { + mBackends.clear(); + const KConfigGroup group( configObject(), "Backends" ); + for ( ProtocolSet::const_iterator it = mAvailableProtocols.begin(), end = mAvailableProtocols.end() ; it != end ; ++it ) { + const QString backend = group.readEntry( *it, defaultBackend( *it ) ); + mBackends[*it] = backendByName( backend ); + } +} + +const char * Kleo::CryptoBackendFactory::enumerateProtocols( int i ) const { + if ( i < 0 || static_cast<unsigned int>( i ) >= mAvailableProtocols.size() ) + return 0; + return mAvailableProtocols[i]; +} + +namespace { + class CaseInsensitiveString { + const char * m; + public: + CaseInsensitiveString( const char * s ) : m( s ) {} +#define make_operator( op ) \ + bool operator op( const CaseInsensitiveString & other ) const { \ + return qstricmp( m, other.m ) op 0; \ + } \ + bool operator op( const char * other ) const { \ + return qstricmp( m, other ) op 0; \ + } + make_operator( == ) + make_operator( != ) + make_operator( < ) + make_operator( > ) + make_operator( <= ) + make_operator( >= ) +#undef make_operator + operator const char *() const { return m; } + }; +#define make_ext_operator( op, inv_op ) \ + inline bool operator op( const char * lhs, const CaseInsensitiveString & rhs ) { \ + return rhs.operator inv_op( lhs ); \ + } + make_ext_operator( ==, == ) + make_ext_operator( !=, != ) + make_ext_operator( <, > ) + make_ext_operator( >, < ) + make_ext_operator( <=, >= ) + make_ext_operator( >=, <= ) +#undef make_ext_operator + +} + +bool Kleo::CryptoBackendFactory::knowsAboutProtocol( const char * name ) const { + return std::find( mAvailableProtocols.begin(), mAvailableProtocols.end(), + CaseInsensitiveString( name ) ) != mAvailableProtocols.end(); +} + +#include "cryptobackendfactory.moc" + |