Copy the KDE 3.5 branch to branches/trinity for new KDE 3.5 features.

BUG:215923


git-svn-id: svn://anonsvn.kde.org/home/kde/branches/trinity/kdepim@1054174 283d02a7-25f6-0310-bc7c-ecb5cbfe19da

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"
+