chatcleaner: initial letter repetition check

chatcleaner.pro

@@ -27,7 +27,8 @@ SOURCES += chatcleaner.cpp \
     tinyxml.cpp \
     tinyxmlerror.cpp \
     tinyxmlparser.cpp \
-	capsfloodcheck.cpp
+    capsfloodcheck.cpp \
+    letterrepeatingcheck.cpp
 HEADERS += cleanerserver.h \
     messagefilter.h \
     badwordcheck.h \
@@ -35,4 +36,5 @@ HEADERS += cleanerserver.h \
     cleanerconfig.h \
     tinyxml.h \
     tinystr.h \
-	capsfloodcheck.h
+    capsfloodcheck.h \
+    letterrepeatingcheck.h

src/chatcleaner/cleanerconfig.cpp

@@ -43,7 +43,7 @@ using namespace std;
 CleanerConfig::CleanerConfig()
 {
 	// !!!! Revisionsnummer der Configdefaults !!!!!
-	configRev = 3;
+	configRev = 4;
 	
 	// Pfad und Dateinamen setzen
 #ifdef _WIN32
@@ -117,6 +117,7 @@ CleanerConfig::CleanerConfig()
 	configList.push_back(ConfigInfo("WarnLevelToKick", CONFIG_TYPE_INT, "2"));
 	configList.push_back(ConfigInfo("TextFloodLevelToTrigger", CONFIG_TYPE_INT, "3"));
 	configList.push_back(ConfigInfo("CapsFloodCapsNumberToTrigger", CONFIG_TYPE_INT, "10"));
+	configList.push_back(ConfigInfo("LetterRepeatingNumberToTrigger", CONFIG_TYPE_INT, "10"));
 	
 	list<string> badWordsList;
 	

src/chatcleaner/letterrepeatingcheck.cpp

@@ -0,0 +1,25 @@
+#include "letterrepeatingcheck.h"
+
+#include <QtCore>
+
+LetterRepeatingCheck::LetterRepeatingCheck()
+{
+}
+
+bool LetterRepeatingCheck::run(QString msg) 
+{
+	msg = msg.simplified().remove(" ");
+	QRegExp e(QString(".*(.)\\1{%1,}.*").arg(letterNumberToTrigger-1));
+	if(e.isValid()) {
+		if(e.exactMatch(msg)) { 
+			return true; 
+		}
+		else {
+			return false;
+		}
+	}
+	else { 
+		qDebug() << "The current Letter Repeating RegExp is invalid" << endl;
+		return false;
+	}
+}

src/chatcleaner/letterrepeatingcheck.h

@@ -0,0 +1,19 @@
+#ifndef LETTERREPEATINGCHECK_H
+#define LETTERREPEATINGCHECK_H
+
+#include <QtCore>
+
+class LetterRepeatingCheck: public QObject {
+Q_OBJECT
+public:
+    LetterRepeatingCheck();
+	
+	void setLetterNumberToTrigger(int n) { letterNumberToTrigger = n; }
+	bool run(QString);
+	
+private:
+
+	int letterNumberToTrigger;
+};
+
+#endif // CAPSFLOODCHECK_H

src/chatcleaner/messagefilter.cpp

@@ -5,6 +5,7 @@
 #include "textfloodcheck.h"
 #include "cleanerconfig.h"
 #include "capsfloodcheck.h"
+#include "letterrepeatingcheck.h"
 
 enum ActionType {
 	NOTHING,
@@ -15,7 +16,8 @@ enum OffenceType {
 	NONE,
 	BAD_WORD,
 	TEXT_FLOOD_LINES,
-	CAPS_FLOOD
+	CAPS_FLOOD,
+	LETTER_REPEATING
 };
 
 MessageFilter::MessageFilter(CleanerConfig *c): config(c)
@@ -23,6 +25,7 @@ MessageFilter::MessageFilter(CleanerConfig *c): config(c)
 	myBadWordCheck = new BadWordCheck;
 	myTextFloodCheck = new TextFloodCheck;
 	myCapsFloodCheck = new CapsFloodCheck;
+	myLetterRepeatingCheck = new LetterRepeatingCheck;
 }
 
 QString MessageFilter::check(unsigned playerId, QString nick, QString msg) 
@@ -34,6 +37,7 @@ QString MessageFilter::check(unsigned playerId, QString nick, QString msg)
 	
 	if(myBadWordCheck->run(msg)) offence = BAD_WORD;
 	if(myCapsFloodCheck->run(msg)) offence = CAPS_FLOOD;
+	if(myLetterRepeatingCheck->run(msg)) offence = LETTER_REPEATING;
 	if(myTextFloodCheck->run(playerId)) offence = TEXT_FLOOD_LINES;
 	
 	if(offence){
@@ -82,6 +86,10 @@ QString MessageFilter::check(unsigned playerId, QString nick, QString msg)
 					returnMessage = QString ("<PokerTHCleaner> %1: Warning: You've triggered caps flood protection, release your caps!\n").arg(nick);
 				}
 				break;
+				case LETTER_REPEATING: {
+					returnMessage = QString ("<PokerTHCleaner> %1: Warning: You've triggered letter repeating protection, stop repeating!\n").arg(nick);
+				}
+				break;
 				default:;
 			}
 		}
@@ -109,4 +117,6 @@ void MessageFilter::refreshConfig() {
 	
 	myTextFloodCheck->setTextFloodLevelToTrigger(config->readConfigInt("TextFloodLevelToTrigger"));
 	myCapsFloodCheck->setCapsNumberToTrigger(config->readConfigInt("CapsFloodCapsNumberToTrigger"));
+	myLetterRepeatingCheck->setLetterNumberToTrigger(config->readConfigInt("LetterRepeatingNumberToTrigger"));
+
 }

src/chatcleaner/messagefilter.h

@@ -8,6 +8,7 @@ class BadWordCheck;
 class TextFloodCheck;
 class CleanerConfig;
 class CapsFloodCheck;
+class LetterRepeatingCheck;
 
 class MessageFilter: public QObject {
 Q_OBJECT
@@ -21,6 +22,7 @@ private:
 	BadWordCheck *myBadWordCheck;
 	TextFloodCheck *myTextFloodCheck;
 	CapsFloodCheck *myCapsFloodCheck;
+	LetterRepeatingCheck *myLetterRepeatingCheck;
 	
 	struct ClientWarnInfos { 
 		QString nick;