Added m_filter module that filters privmsgs and notices that match patterns

git-svn-id: http://svn.inspircd.org/repository/trunk/inspircd@416 e03df62e-2008-0410-955e-edbf42e46eb7

1 files changed, 163 insertions, 0 deletions

diff --git a/src/modules/m_filter.cpp b/src/modules/m_filter.cpp
new file mode 100644
index 000000000..d2714ee01
--- /dev/null
+++ b/src/modules/m_filter.cpp
@@ -0,0 +1,163 @@
+// Message and notice filtering using glob patterns
+// a module based on the original work done by Craig Edwards in 2003
+// for the chatspike network.
+
+#include <stdio.h>
+#include <string>
+#include "users.h"
+#include "channels.h"
+#include "modules.h"
+
+/* $ModDesc: An enhanced version of the unreal m_filter.so used by chatspike.net */
+
+	 
+
+class ModuleFilter : public Module
+{
+ Server *Srv;
+ ConfigReader *Conf, *MyConf;
+ 
+ public:
+	ModuleFilter()
+	{
+		// read the configuration file on startup.
+		// it is perfectly valid to set <filter file> to the value of the
+		// main config file, then append your <keyword> tags to the bottom
+		// of the main config... but rather messy. That's why the capability
+		// of using a seperate config file is provided.
+		Srv = new Server;
+		Conf = new ConfigReader;
+		std::string filterfile = Conf->ReadValue("filter","file",0);
+		if (filterfile == "")
+		{
+			printf("Error, could not find <filter file=\"\"> definition in your config file!");
+			exit(0);
+		}
+		MyConf = new ConfigReader(filterfile);
+		Srv->Log(DEFAULT,std::string("m_filter: read configuration from ")+filterfile);
+	}
+	
+	virtual ~ModuleFilter()
+	{
+		delete Srv;
+		delete MyConf;
+		delete Conf;
+	}
+	
+	// format of a config entry is <keyword pattern="*glob*" reason="Some reason here">
+	
+	virtual int OnUserPreMessage(userrec* user,void* dest,int target_type, std::string text)
+	{
+		text = text + " ";
+		for (int index = 0; index < MyConf->Enumerate("keyword"); index++)
+		{
+			std::string pattern = MyConf->ReadValue("keyword","pattern",index);
+			if (Srv->MatchText(text,pattern))
+			{
+				std::string target = "";
+				if (target_type == TYPE_USER)
+				{
+					userrec* t = (userrec*)dest;
+					target = std::string(t->nick);
+				}
+				else if (target_type == TYPE_CHANNEL)
+				{
+					chanrec* t = (chanrec*)dest;
+					target = std::string(t->name);
+				}
+				Srv->SendOpers(std::string("FILTER: ")+std::string(user->nick)+
+    						std::string(" had their message filtered, target was ")+
+    						target+": "+MyConf->ReadValue("keyword","reason",index));
+				Srv->Log(DEFAULT,std::string("FILTER: ")+std::string(user->nick)+
+    						std::string(" had their message filtered, target was ")+
+    						target+": "+MyConf->ReadValue("keyword","reason",index));
+				return 1;
+			}
+		}
+		return 0;
+	}
+	
+	virtual int OnUserPreNotice(userrec* user,void* dest,int target_type, std::string text)
+	{
+		text = text + " ";
+		for (int index = 0; index < MyConf->Enumerate("keyword"); index++)
+		{
+			std::string pattern = MyConf->ReadValue("keyword","pattern",index);
+			if (Srv->MatchText(text,pattern))
+			{
+				std::string target = "";
+				if (target_type == TYPE_USER)
+				{
+					userrec* t = (userrec*)dest;
+					target = std::string(t->nick);
+				}
+				else if (target_type == TYPE_CHANNEL)
+				{
+					chanrec* t = (chanrec*)dest;
+					target = std::string(t->name);
+				}
+				Srv->SendOpers(std::string("FILTER: ")+std::string(user->nick)+
+    						std::string(" had their notice filtered, target was ")+
+    						target+": "+MyConf->ReadValue("keyword","reason",index));
+				Srv->Log(DEFAULT,std::string("FILTER: ")+std::string(user->nick)+
+    						std::string(" had their notice filtered, target was ")+
+    						target+": "+MyConf->ReadValue("keyword","reason",index));
+				return 1;
+			}
+		}
+		return 0;
+	}
+	
+	virtual void OnRehash()
+	{
+		// reload our config file on rehash - we must destroy and re-allocate the classes
+		// to call the constructor again and re-read our data.
+		delete Conf;
+		delete MyConf;
+		Conf = new ConfigReader;
+		std::string filterfile = Conf->ReadValue("filter","file",0);
+		if (filterfile == "")
+		{
+			// bail if the user forgot to create a config file
+			printf("Error, could not find <filter file=\"\"> definition in your config file!");
+			exit(0);
+		}
+		// this automatically re-reads the configuration file into the class
+		MyConf = new ConfigReader(filterfile);
+		Srv->Log(DEFAULT,std::string("m_filter: read configuration from ")+filterfile);
+	}
+	
+	virtual Version GetVersion()
+	{
+		// This is version 2 because version 1.x is the unreleased unrealircd module
+		return Version(2,0,0,0);
+	}
+	
+};
+
+// stuff down here is the module-factory stuff. For basic modules you can ignore this.
+
+class ModuleFilterFactory : public ModuleFactory
+{
+ public:
+	ModuleFilterFactory()
+	{
+	}
+	
+	~ModuleFilterFactory()
+	{
+	}
+	
+	virtual Module * CreateModule()
+	{
+		return new ModuleFilter;
+	}
+	
+};
+
+
+extern "C" void * init_module( void )
+{
+	return new ModuleFilterFactory;
+}
+