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158 lines
5.2 KiB
158 lines
5.2 KiB
/* -*- mode: C++; c-file-style: "gnu" -*-
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spamheaderanalyzer.cpp
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This file is part of KMail, the KDE mail client.
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Copyright (c) 2004 Patrick Audley <paudley@blackcat.ca>
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Copyright (c) 2004 Ingo Kloecker <kloecker@kde.org>
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KMail is free software; you can redistribute it and/or modify
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it under the terms of the GNU General Public License as published by
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the Free Software Foundation; either version 2 of the License, or
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(at your option) any later version.
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KMail is distributed in the hope that it will be useful, but
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WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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GNU General Public License for more details.
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You should have received a copy of the GNU General Public License
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along with this program; if not, write to the Free Software
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Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
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In addition, as a special exception, the copyright holders give
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permission to link the code of this program with any edition of
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the TQt library by Trolltech AS, Norway (or with modified versions
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of TQt that use the same license as TQt), and distribute linked
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combinations including the two. You must obey the GNU General
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Public License in all respects for all of the code used other than
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TQt. If you modify this file, you may extend this exception to
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your version of the file, but you are not obligated to do so. If
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you do not wish to do so, delete this exception statement from
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your version.
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*/
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#include "spamheaderanalyzer.h"
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#include "antispamconfig.h"
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#include "kmmessage.h"
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#include <kdebug.h>
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using namespace KMail;
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// static
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SpamScores SpamHeaderAnalyzer::getSpamScores( const KMMessage* message ) {
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kdDebug(5006) << k_funcinfo << endl;
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SpamScores scores;
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SpamAgents agents = AntiSpamConfig::instance()->uniqueAgents();
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for ( SpamAgentsIterator it = agents.begin(); it != agents.end(); ++it ) {
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float score = -2.0;
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// Skip bogus agents
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if ( (*it).scoreType() == SpamAgentNone )
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continue;
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// Do we have the needed field for this agent?
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TQString mField = message->headerField( (*it).header() );
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if ( mField.isEmpty() )
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continue;
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TQString scoreString;
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bool scoreValid = false;
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if ( (*it).scoreType() != SpamAgentBool ) {
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// Can we extract the score?
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TQRegExp scorePattern = (*it).scorePattern();
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if ( scorePattern.search( mField ) != -1 ) {
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scoreString = scorePattern.cap( 1 );
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scoreValid = true;
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}
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} else
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scoreValid = true;
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if ( !scoreValid ) {
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score = -5.0;
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kdDebug(5006) << "Score could not be extracted from header '"
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<< mField << "'" << endl;
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} else {
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bool floatValid = false;
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switch ( (*it).scoreType() ) {
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case SpamAgentNone:
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score = -2.0;
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break;
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case SpamAgentBool:
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if( (*it).scorePattern().search( mField ) == -1 )
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score = 0.0;
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else
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score = 100.0;
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break;
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case SpamAgentFloat:
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score = scoreString.toFloat( &floatValid );
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if ( !floatValid ) {
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score = -3.0;
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kdDebug(5006) << "Score (" << scoreString << ") is no number"
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<< endl;
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}
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else
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score *= 100.0;
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break;
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case SpamAgentFloatLarge:
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score = scoreString.toFloat( &floatValid );
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if ( !floatValid ) {
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score = -3.0;
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kdDebug(5006) << "Score (" << scoreString << ") is no number"
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<< endl;
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}
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break;
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case SpamAgentAdjustedFloat:
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score = scoreString.toFloat( &floatValid );
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if ( !floatValid ) {
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score = -3.0;
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kdDebug(5006) << "Score (" << scoreString << ") is no number"
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<< endl;
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break;
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}
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// Find the threshold value.
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TQString thresholdString;
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TQRegExp thresholdPattern = (*it).thresholdPattern();
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if ( thresholdPattern.search( mField ) != -1 ) {
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thresholdString = thresholdPattern.cap( 1 );
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}
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else {
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score = -6.0;
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kdDebug(5006) << "Threshold could not be extracted from header '"
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<< mField << "'" << endl;
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break;
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}
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float threshold = thresholdString.toFloat( &floatValid );
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if ( !floatValid || ( threshold <= 0.0 ) ) {
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score = -4.0;
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kdDebug(5006) << "Threshold (" << thresholdString << ") is no "
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<< "number or is negative" << endl;
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break;
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}
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// Normalize the score. Anything below 0 means 0%, anything above
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// threshold mean 100%. Values between 0 and threshold are mapped
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// linearily to 0% - 100%.
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if ( score < 0.0 )
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score = 0.0;
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else if ( score > threshold )
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score = 100.0;
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else
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score = score / threshold * 100.0;
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break;
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}
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}
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scores.append( SpamScore( (*it).name(), score, mField ) );
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}
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return scores;
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}
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