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tdenetwork/kopete/plugins/cryptography/cryptographyplugin.cpp

327 lines
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/***************************************************************************
cryptographyplugin.cpp - description
-------------------
begin : jeu nov 14 2002
copyright : (C) 2002-2004 by Olivier Goffart
email : ogoffart @ kde.org
***************************************************************************/
/***************************************************************************
* *
* This program 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. *
* *
***************************************************************************/
#include <tqstylesheet.h>
#include <tqtimer.h>
#include <tqregexp.h>
#include <kdebug.h>
#include <kaction.h>
#include <kconfig.h>
#include <kgenericfactory.h>
#include <kdeversion.h>
#include <kaboutdata.h>
#include "kopetemetacontact.h"
#include "kopetecontactlist.h"
#include "kopetechatsessionmanager.h"
#include "kopetesimplemessagehandler.h"
#include "kopeteuiglobal.h"
#include "kopetecontact.h"
#include "cryptographyplugin.h"
#include "cryptographyselectuserkey.h"
#include "cryptographyguiclient.h"
#include "kgpginterface.h"
//This regexp try to match an HTML text, but only some authorized tags.
// used in slotIncomingMessage
//There are not rules to know if the test should be sent in html or not.
//In Jabber, the JEP says it's not. so we don't use richtext in our message, but some client did.
//We limit the html to some basis tag to limit security problem (bad links)
// - Olivier
const TQRegExp CryptographyPlugin::isHTML( TQString::tqfromLatin1( "^[^<>]*(</?(html|body|br|p|font|center|b|i|u|span|div|pre)(>|[\\s/][^><]*>)[^><]*)+$" ) , false );
typedef KGenericFactory<CryptographyPlugin> CryptographyPluginFactory;
static const KAboutData aboutdata("kopete_cryptography", I18N_NOOP("Cryptography") , "1.0" );
K_EXPORT_COMPONENT_FACTORY( kopete_cryptography, CryptographyPluginFactory( &aboutdata ) )
CryptographyPlugin::CryptographyPlugin( TQObject *parent, const char *name, const TQStringList & /* args */ )
: Kopete::Plugin( CryptographyPluginFactory::instance(), parent, name ),
m_cachedPass()
{
if( !pluginStatic_ )
pluginStatic_=this;
m_inboundHandler = new Kopete::SimpleMessageHandlerFactory( Kopete::Message::Inbound,
Kopete::MessageHandlerFactory::InStageToSent, this, TQT_SLOT( slotIncomingMessage( Kopete::Message& ) ) );
connect( Kopete::ChatSessionManager::self(),
TQT_SIGNAL( aboutToSend( Kopete::Message & ) ),
TQT_SLOT( slotOutgoingMessage( Kopete::Message & ) ) );
m_cachedPass_timer = new TQTimer(this, "m_cachedPass_timer" );
TQObject::connect(m_cachedPass_timer, TQT_SIGNAL(timeout()), this, TQT_SLOT(slotForgetCachedPass() ));
KAction *action=new KAction( i18n("&Select Cryptography Public Key..."), "encrypted", 0, this, TQT_SLOT (slotSelectContactKey()), actionCollection() , "contactSelectKey");
connect ( Kopete::ContactList::self() , TQT_SIGNAL( metaContactSelected(bool)) , action , TQT_SLOT(setEnabled(bool)));
action->setEnabled(Kopete::ContactList::self()->selectedMetaContacts().count()==1 );
setXMLFile("cryptographyui.rc");
loadSettings();
connect(this, TQT_SIGNAL(settingsChanged()), this, TQT_SLOT( loadSettings() ) );
connect( Kopete::ChatSessionManager::self(), TQT_SIGNAL( chatSessionCreated( Kopete::ChatSession * )) , TQT_SLOT( slotNewKMM( Kopete::ChatSession * ) ) );
//Add GUI action to all already existing kmm (if the plugin is launched when kopete already rining)
TQValueList<Kopete::ChatSession*> sessions = Kopete::ChatSessionManager::self()->sessions();
for (TQValueListIterator<Kopete::ChatSession*> it= sessions.begin(); it!=sessions.end() ; ++it)
{
slotNewKMM(*it);
}
}
CryptographyPlugin::~CryptographyPlugin()
{
delete m_inboundHandler;
pluginStatic_ = 0L;
}
void CryptographyPlugin::loadSettings()
{
KConfig *config = KGlobal::config();
config->setGroup("Cryptography Plugin");
mPrivateKeyID = config->readEntry("PGP_private_key");
mAlsoMyKey = config->readBoolEntry("Also_my_key", false);
if(config->readBoolEntry("Cache_Till_App_Close", false))
mCachePassPhrase = Keep;
if(config->readBoolEntry("Cache_Till_Time", false))
mCachePassPhrase = Time;
if(config->readBoolEntry("Cache_Never", false))
mCachePassPhrase = Never;
mCacheTime = config->readNumEntry("Cache_Time", 15);
mAskPassPhrase = config->readBoolEntry("No_Passphrase_Handling", false);
}
CryptographyPlugin* CryptographyPlugin::plugin()
{
return pluginStatic_ ;
}
CryptographyPlugin* CryptographyPlugin::pluginStatic_ = 0L;
TQCString CryptographyPlugin::cachedPass()
{
return pluginStatic_->m_cachedPass;
}
void CryptographyPlugin::setCachedPass(const TQCString& p)
{
if(pluginStatic_->mCacheMode==Never)
return;
if(pluginStatic_->mCacheMode==Time)
pluginStatic_->m_cachedPass_timer->start(pluginStatic_->mCacheTime * 60000, false);
pluginStatic_->m_cachedPass=p;
}
bool CryptographyPlugin::passphraseHandling()
{
return !pluginStatic_->mAskPassPhrase;
}
/*KActionCollection *CryptographyPlugin::customChatActions(Kopete::ChatSession *KMM)
{
delete m_actionCollection;
m_actionCollection = new KActionCollection(this);
KAction *actionTranslate = new KAction( i18n ("Translate"), 0,
this, TQT_SLOT( slotTranslateChat() ), m_actionCollection, "actionTranslate" );
m_actionCollection->insert( actionTranslate );
m_currentChatSession=KMM;
return m_actionCollection;
}*/
void CryptographyPlugin::slotIncomingMessage( Kopete::Message& msg )
{
TQString body = msg.plainBody();
if( !body.startsWith( TQString::tqfromLatin1("-----BEGIN PGP MESSAGE----") )
|| !body.contains( TQString::tqfromLatin1("-----END PGP MESSAGE----") ) )
return;
if( msg.direction() != Kopete::Message::Inbound )
{
TQString plainBody;
if ( m_cachedMessages.contains( body ) )
{
plainBody = m_cachedMessages[ body ];
m_cachedMessages.remove( body );
}
else
{
plainBody = KgpgInterface::KgpgDecryptText( body, mPrivateKeyID );
}
if( !plainBody.isEmpty() )
{
//Check if this is a RTF message before escaping it
if( !isHTML.exactMatch( plainBody ) )
{
plainBody = TQStyleSheet::escape( plainBody );
//this is the same algoritm as in Kopete::Message::escapedBody();
plainBody.replace( TQString::tqfromLatin1( "\n" ), TQString::tqfromLatin1( "<br/>" ) )
.replace( TQString::tqfromLatin1( "\t" ), TQString::tqfromLatin1( "&nbsp;&nbsp;&nbsp;&nbsp;" ) )
.replace( TQRegExp( TQString::tqfromLatin1( "\\s\\s" ) ), TQString::tqfromLatin1( "&nbsp; " ) );
}
msg.setBody( TQString::tqfromLatin1("<table width=\"100%\" border=0 cellspacing=0 cellpadding=0><tr><td class=\"highlight\"><font size=\"-1\"><b>")
+ i18n("Outgoing Encrypted Message: ")
+ TQString::tqfromLatin1("</b></font></td></tr><tr><td class=\"highlight\">")
+ plainBody
+ TQString::tqfromLatin1(" </td></tr></table>")
, Kopete::Message::RichText );
}
//if there are too messages in cache, clear the cache
if(m_cachedMessages.count() > 5)
m_cachedMessages.clear();
return;
}
//the Message::unescape is there because client like fire replace linebreak by <BR> to work even if the protocol doesn't allow newlines (IRC)
// cf http://fire.sourceforge.net/forums/viewtopic.php?t=174 and Bug #96052
if(body.contains("<"))
body= Kopete::Message::unescape(body);
body = KgpgInterface::KgpgDecryptText( body, mPrivateKeyID );
if( !body.isEmpty() )
{
//Check if this is a RTF message before escaping it
if( !isHTML.exactMatch( body ) )
{
body = Kopete::Message::escape( body );
}
msg.setBody( TQString::tqfromLatin1("<table width=\"100%\" border=0 cellspacing=0 cellpadding=0><tr><td class=\"highlight\"><font size=\"-1\"><b>")
+ i18n("Incoming Encrypted Message: ")
+ TQString::tqfromLatin1("</b></font></td></tr><tr><td class=\"highlight\">")
+ body
+ TQString::tqfromLatin1(" </td></tr></table>")
, Kopete::Message::RichText );
}
}
void CryptographyPlugin::slotOutgoingMessage( Kopete::Message& msg )
{
if(msg.direction() != Kopete::Message::Outbound)
return;
TQStringList keys;
TQPtrList<Kopete::Contact> contactlist = msg.to();
for( Kopete::Contact *c = contactlist.first(); c; c = contactlist.next() )
{
TQString tmpKey;
if( c->metaContact() )
{
if(c->metaContact()->pluginData( this, "encrypt_messages" ) == "off" )
return;
tmpKey = c->metaContact()->pluginData( this, "gpgKey" );
}
if( tmpKey.isEmpty() )
{
// kdDebug( 14303 ) << "CryptographyPlugin::slotOutgoingMessage: no key selected for one contact" <<endl;
return;
}
keys.append( tmpKey );
}
if(mAlsoMyKey) //encrypt also with the self key
keys.append( mPrivateKeyID );
TQString key = keys.join( " " );
if(key.isEmpty())
{
kdDebug(14303) << "CryptographyPlugin::slotOutgoingMessage: empty key" <<endl;
return;
}
TQString original=msg.plainBody();
/* Code From KGPG */
////////////////// encode from editor
TQString encryptOptions="";
//if (utrust==true)
encryptOptions+=" --always-trust ";
//if (arm==true)
encryptOptions+=" --armor ";
/* if (pubcryptography==true)
{
if (gpgversion<120) encryptOptions+=" --compress-algo 1 --cipher-algo cast5 ";
else encryptOptions+=" --cryptography6 ";
}*/
// if (selec==NULL) {KMessageBox::sorry(Kopete::UI::Global::mainWidget(),i18n("You have not chosen an encryption key..."));return;}
TQString resultat=KgpgInterface::KgpgEncryptText(original,key,encryptOptions);
if (!resultat.isEmpty())
{
msg.setBody(resultat,Kopete::Message::PlainText);
m_cachedMessages.insert(resultat,original);
}
else
kdDebug(14303) << "CryptographyPlugin::slotOutgoingMessage: empty result" <<endl;
}
void CryptographyPlugin::slotSelectContactKey()
{
Kopete::MetaContact *m=Kopete::ContactList::self()->selectedMetaContacts().first();
if(!m)
return;
TQString key = m->pluginData( this, "gpgKey" );
CryptographySelectUserKey *opts = new CryptographySelectUserKey( key, m );
opts->exec();
if( opts->result() )
{
key = opts->publicKey();
m->setPluginData( this, "gpgKey", key );
}
delete opts;
}
void CryptographyPlugin::slotForgetCachedPass()
{
m_cachedPass=TQCString();
m_cachedPass_timer->stop();
}
void CryptographyPlugin::slotNewKMM(Kopete::ChatSession *KMM)
{
connect(this , TQT_SIGNAL( destroyed(TQObject*)) ,
new CryptographyGUIClient(KMM) , TQT_SLOT(deleteLater()));
}
#include "cryptographyplugin.moc"
// vim: set noet ts=4 sts=4 sw=4: