X-Git-Url: https://git.netwichtig.de/gitweb/?a=blobdiff_plain;f=src%2Fmodules%2Fm_filter.h;h=e1f97bd72855fc15718f296a7496bca0cf490ed0;hb=52671661f8fdca0b61aec8009b4bc7de9bc00166;hp=b2c3816a8f3faa0d2ddb1561c5c5f9d4f5add74d;hpb=6692d15462003157768a15c86192399b5b73e3c2;p=user%2Fhenk%2Fcode%2Finspircd.git

diff --git a/src/modules/m_filter.h b/src/modules/m_filter.h
index b2c3816a8..e1f97bd72 100644
--- a/src/modules/m_filter.h
+++ b/src/modules/m_filter.h
@@ -2,12 +2,9 @@
  *       | Inspire Internet Relay Chat Daemon |
  *       +------------------------------------+
  *
- *  InspIRCd is copyright (C) 2002-2006 ChatSpike-Dev.
- *                       E-mail:
- *                <brain@chatspike.net>
- *           	  <Craig@chatspike.net>
- *     
- * Written by Craig Edwards, Craig McLure, and others.
+ *  InspIRCd: (C) 2002-2008 InspIRCd Development Team
+ * See: http://www.inspircd.org/wiki/index.php/Credits
+ *
  * This program is free but copyrighted software; see
  *            the file COPYING for details.
  *
@@ -16,15 +13,70 @@
 
 #include "xline.h"
 
+enum FilterFlags
+{
+	FLAG_PART = 2,
+	FLAG_QUIT = 4,
+	FLAG_PRIVMSG = 8,
+	FLAG_NOTICE = 16
+};
+
 class FilterResult : public classbase
 {
  public:
+	std::string freeform;
 	std::string reason;
 	std::string action;
 	long gline_time;
+	std::string flags;
 
-	FilterResult(const std::string &rea, const std::string &act, long gt) : reason(rea), action(act), gline_time(gt)
+	bool flag_no_opers;
+	bool flag_part_message;
+	bool flag_quit_message;
+	bool flag_privmsg;
+	bool flag_notice;
+
+	FilterResult(const std::string free, const std::string &rea, const std::string &act, long gt, const std::string &fla) :
+			freeform(free), reason(rea), action(act), gline_time(gt), flags(fla)
 	{
+		this->FillFlags(fla);
+	}
+
+	int FillFlags(const std::string &fl)
+	{
+		flags = fl;
+		flag_no_opers = flag_part_message = flag_quit_message = flag_privmsg = flag_notice = false;
+		size_t x = 0;
+
+		for (std::string::const_iterator n = flags.begin(); n != flags.end(); ++n, ++x)
+		{
+			switch (*n)
+			{
+				case 'o':
+					flag_no_opers = true;
+				break;
+				case 'P':
+					flag_part_message = true;
+				break;
+				case 'q':
+					flag_quit_message = true;
+				break;
+				case 'p':
+					flag_privmsg = true;
+				break;
+				case 'n':
+					flag_notice = true;
+				break;
+				case '*':
+					flag_no_opers = flag_part_message = flag_quit_message =
+						flag_privmsg = flag_notice = true;
+				break;
+				default:
+					return x;
+				break;
+			}
+		}
+		return 0;
 	}
 
 	FilterResult()
@@ -36,79 +88,374 @@ class FilterResult : public classbase
 	}
 };
 
+class CommandFilter;
+
 class FilterBase : public Module
-{ 
+{
+	CommandFilter* filtcommand;
+	int flags;
+protected:
+	std::vector<std::string> exemptfromfilter; // List of channel names excluded from filtering.
  public:
-	FilterBase(InspIRCd* Me)
-		: Module::Module(Me)
-	{
-	}
-	
-	virtual ~FilterBase()
+	FilterBase(InspIRCd* Me, const std::string &source);
+	virtual ~FilterBase();
+	virtual int OnUserPreMessage(User* user,void* dest,int target_type, std::string &text, char status, CUList &exempt_list);
+	virtual FilterResult* FilterMatch(User* user, const std::string &text, int flags) = 0;
+	virtual bool DeleteFilter(const std::string &freeform) = 0;
+	virtual void SyncFilters(Module* proto, void* opaque) = 0;
+	virtual void SendFilter(Module* proto, void* opaque, FilterResult* iter);
+	virtual std::pair<bool, std::string> AddFilter(const std::string &freeform, const std::string &type, const std::string &reason, long duration, const std::string &flags) = 0;
+	virtual int OnUserPreNotice(User* user,void* dest,int target_type, std::string &text, char status, CUList &exempt_list);
+	virtual void OnRehash(User* user, const std::string &parameter);
+	virtual Version GetVersion();
+	std::string EncodeFilter(FilterResult* filter);
+	FilterResult DecodeFilter(const std::string &data);
+	virtual void OnSyncOtherMetaData(Module* proto, void* opaque, bool displayable = false);
+	virtual void OnDecodeMetaData(int target_type, void* target, const std::string &extname, const std::string &extdata);
+	virtual int OnStats(char symbol, User* user, string_list &results) = 0;
+	virtual int OnPreCommand(const std::string &command, const char* const* parameters, int pcnt, User *user, bool validated, const std::string &original_line);
+	bool AppliesToMe(User* user, FilterResult* filter, int flags);
+};
+
+class CommandFilter : public Command
+{
+	FilterBase* Base;
+ public:
+	CommandFilter(FilterBase* f, InspIRCd* Me, const std::string &ssource) : Command(Me, "FILTER", "o", 1), Base(f)
 	{
+		this->source = ssource;
+		this->syntax = "<filter-definition> <type> <flags> [<gline-duration>] :<reason>";
 	}
 
-	virtual void Implements(char* List)
+	CmdResult Handle(const char* const* parameters, int pcnt, User *user)
 	{
-		List[I_OnUserPreMessage] = List[I_OnUserPreNotice] = List[I_OnRehash] = 1;
+		if (pcnt == 1)
+		{
+			/* Deleting a filter */
+			if (Base->DeleteFilter(parameters[0]))
+			{
+				user->WriteServ("NOTICE %s :*** Deleted filter '%s'", user->nick, parameters[0]);
+				return CMD_SUCCESS;
+			}
+			else
+			{
+				user->WriteServ("NOTICE %s :*** Filter '%s' not found on list.", user->nick, parameters[0]);
+				return CMD_FAILURE;
+			}
+		}
+		else
+		{
+			/* Adding a filter */
+			if (pcnt >= 4)
+			{
+				std::string freeform = parameters[0];
+				std::string type = parameters[1];
+				std::string flags = parameters[2];
+				std::string reason;
+				long duration = 0;
+
+
+				if ((type != "gline") && (type != "none") && (type != "block") && (type != "kill") && (type != "silent"))
+				{
+					user->WriteServ("NOTICE %s :*** Invalid filter type '%s'. Supported types are 'gline', 'none', 'block', 'silent' and 'kill'.", user->nick, freeform.c_str());
+					return CMD_FAILURE;
+				}
+
+				if (type == "gline")
+				{
+					if (pcnt >= 5)
+					{
+						duration = ServerInstance->Duration(parameters[3]);
+						reason = parameters[4];
+					}
+					else
+					{
+						this->TooFewParams(user, " When setting a gline type filter, a gline duration must be specified as the third parameter.");
+						return CMD_FAILURE;
+					}
+				}
+				else
+				{
+					reason = parameters[3];
+				}
+				std::pair<bool, std::string> result = Base->AddFilter(freeform, type, reason, duration, flags);
+				if (result.first)
+				{
+					user->WriteServ("NOTICE %s :*** Added filter '%s', type '%s'%s%s, flags '%s', reason: '%s'", user->nick, freeform.c_str(),
+							type.c_str(), (duration ? " duration: " : ""), (duration ? parameters[3] : ""),
+							flags.c_str(), reason.c_str());
+					return CMD_SUCCESS;
+				}
+				else
+				{
+					user->WriteServ("NOTICE %s :*** Filter '%s' could not be added: %s", user->nick, freeform.c_str(), result.second.c_str());
+					return CMD_FAILURE;
+				}
+			}
+			else
+			{
+				this->TooFewParams(user, ".");
+				return CMD_FAILURE;
+			}
+
+		}
 	}
 
-	virtual int OnUserPreMessage(userrec* user,void* dest,int target_type, std::string &text, char status)
+	void TooFewParams(User* user, const std::string &extra_text)
 	{
-		return OnUserPreNotice(user,dest,target_type,text,status);
+		user->WriteServ("NOTICE %s :*** Not enough parameters%s", user->nick, extra_text.c_str());
 	}
+};
+
+bool FilterBase::AppliesToMe(User* user, FilterResult* filter, int iflags)
+{
+	if ((filter->flag_no_opers) && IS_OPER(user))
+		return false;
+	if ((iflags & FLAG_PRIVMSG) && (!filter->flag_privmsg))
+		return false;
+	if ((iflags & FLAG_NOTICE) && (!filter->flag_notice))
+		return false;
+	if ((iflags & FLAG_QUIT)   && (!filter->flag_quit_message))
+		return false;
+	if ((iflags & FLAG_PART)   && (!filter->flag_part_message))
+		return false;
+	return true;
+}
+
+FilterBase::FilterBase(InspIRCd* Me, const std::string &source) : Module(Me)
+{
+	filtcommand = new CommandFilter(this, Me, source);
+	ServerInstance->AddCommand(filtcommand);
+	Implementation eventlist[] = { I_OnPreCommand, I_OnStats, I_OnSyncOtherMetaData, I_OnDecodeMetaData, I_OnUserPreMessage, I_OnUserPreNotice, I_OnRehash };
+	ServerInstance->Modules->Attach(eventlist, this, 7);
+}
 
-	/* This must be implemented by the module which uses the header */
-	virtual FilterResult* FilterMatch(const std::string &text) = 0;
+FilterBase::~FilterBase()
+{
+}
 
-	virtual int OnUserPreNotice(userrec* user,void* dest,int target_type, std::string &text, char status)
+int FilterBase::OnUserPreMessage(User* user,void* dest,int target_type, std::string &text, char status, CUList &exempt_list)
+{
+	flags = FLAG_PRIVMSG;
+	return OnUserPreNotice(user,dest,target_type,text,status,exempt_list);
+}
+
+int FilterBase::OnUserPreNotice(User* user,void* dest,int target_type, std::string &text, char status, CUList &exempt_list)
+{
+	if (!flags)
+		flags = FLAG_NOTICE;
+
+	/* Leave ulines alone */
+	if ((ServerInstance->ULine(user->server)) || (!IS_LOCAL(user)))
+		return 0;
+
+	FilterResult* f = this->FilterMatch(user, text, flags);
+	if (f)
 	{
-		FilterResult* f = this->FilterMatch(text);
-		if (f)
+		std::string target = "";
+		if (target_type == TYPE_USER)
 		{
-			std::string target = "";
-			if (target_type == TYPE_USER)
-			{
-				userrec* t = (userrec*)dest;
-				target = std::string(t->nick);
-			}
-			else if (target_type == TYPE_CHANNEL)
+			User* t = (User*)dest;
+			target = std::string(t->nick);
+		}
+		else if (target_type == TYPE_CHANNEL)
+		{
+			Channel* t = (Channel*)dest;
+			target = std::string(t->name);
+			std::vector<std::string>::iterator i = find(exemptfromfilter.begin(), exemptfromfilter.end(), target);
+			if (i != exemptfromfilter.end()) return 0;
+		}
+		if (f->action == "block")
+		{	
+			ServerInstance->SNO->WriteToSnoMask('A', std::string("FILTER: ")+user->nick+" had their message filtered, target was "+target+": "+f->reason);
+			user->WriteServ("NOTICE "+std::string(user->nick)+" :Your message has been filtered and opers notified: "+f->reason);
+		}
+		if (f->action == "silent")
+		{
+			user->WriteServ("NOTICE "+std::string(user->nick)+" :Your message has been filtered: "+f->reason);
+		}
+		if (f->action == "kill")
+		{
+			User::QuitUser(ServerInstance,user,"Filtered: "+f->reason);
+		}
+		if (f->action == "gline")
+		{
+			GLine* gl = new GLine(ServerInstance, ServerInstance->Time(), f->gline_time, ServerInstance->Config->ServerName, f->reason.c_str(), "*", user->GetIPString());
+			if (ServerInstance->XLines->AddLine(gl,NULL))
 			{
-				chanrec* t = (chanrec*)dest;
-				target = std::string(t->name);
-			}
-			if (f->action == "block")
-      			{	
-				ServerInstance->WriteOpers(std::string("FILTER: ")+user->nick+" had their notice filtered, target was "+target+": "+f->reason);
-				user->WriteServ("NOTICE "+std::string(user->nick)+" :Your notice has been filtered and opers notified: "+f->reason);
+				ServerInstance->XLines->ApplyLines();
 			}
-			ServerInstance->Log(DEFAULT,"FILTER: "+std::string(user->nick)+std::string(" had their notice filtered, target was ")+target+": "+f->reason+" Action: "+f->action);
+			else
+				delete gl;
+		}
+
+		ServerInstance->Logs->Log("FILTER",DEFAULT,"FILTER: "+std::string(user->nick)+std::string(" had their message filtered, target was ")+target+": "+f->reason+" Action: "+f->action);
+		return 1;
+	}
+	return 0;
+}
+
+int FilterBase::OnPreCommand(const std::string &command, const char* const* parameters, int pcnt, User *user, bool validated, const std::string &original_line)
+{
+	flags = 0;
+	if ((validated == 1) && (IS_LOCAL(user)))
+	{
+		std::string checkline;
+		int replacepoint = 0;
+		bool parting = false;
+	
+		if (command == "QUIT")
+		{
+			/* QUIT with no reason: nothing to do */
+			if (pcnt < 1)
+				return 0;
+
+			checkline = parameters[0];
+			replacepoint = 0;
+			parting = false;
+			flags = FLAG_QUIT;
+		}
+		else if (command == "PART")
+		{
+			/* PART with no reason: nothing to do */
+			if (pcnt < 2)
+				return 0;
+
+			std::vector<std::string>::iterator i = find(exemptfromfilter.begin(), exemptfromfilter.end(), parameters[0]);
+			if (i != exemptfromfilter.end()) return 0;
+			checkline = parameters[1];
+			replacepoint = 1;
+			parting = true;
+			flags = FLAG_PART;
+		}
+		else
+			/* We're only messing with PART and QUIT */
+			return 0;
+
+		FilterResult* f = NULL;
+		
+		if (flags)
+			f = this->FilterMatch(user, checkline, flags);
 
-			if (f->action == "kill")
+		if (!f)
+			/* PART or QUIT reason doesnt match a filter */
+			return 0;
+
+		/* We cant block a part or quit, so instead we change the reason to 'Reason filtered' */
+		Command* c = ServerInstance->Parser->GetHandler(command);
+		if (c)
+		{
+			const char* params[MAXPARAMETERS];
+			for (int item = 0; item < pcnt; item++)
+				params[item] = parameters[item];
+			params[replacepoint] = "Reason filtered";
+
+			/* We're blocking, OR theyre quitting and its a KILL action
+			 * (we cant kill someone whos already quitting, so filter them anyway)
+			 */
+			if ((f->action == "block") || (((!parting) && (f->action == "kill"))) || (f->action == "silent"))
 			{
-				userrec::QuitUser(ServerInstance,user,f->reason);
+				c->Handle(params, pcnt, user);
+				return 1;
 			}
-
-			if (f->action == "gline")
+			else
 			{
-				if (ServerInstance->XLines->add_gline(f->gline_time, ServerInstance->Config->ServerName, f->reason.c_str(), user->MakeHostIP()))
+				/* Are they parting, if so, kill is applicable */
+				if ((parting) && (f->action == "kill"))
 				{
-					ServerInstance->XLines->apply_lines(APPLY_GLINES);
-					FOREACH_MOD(I_OnAddGLine,OnAddGLine(f->gline_time, NULL, f->reason, user->MakeHostIP()));
+					user->WriteServ("NOTICE %s :*** Your PART message was filtered: %s", user->nick, f->reason.c_str());
+					User::QuitUser(ServerInstance, user, "Filtered: " + f->reason);
 				}
+				if (f->action == "gline")
+				{
+					/* Note: We gline *@IP so that if their host doesnt resolve the gline still applies. */
+					GLine* gl = new GLine(ServerInstance, ServerInstance->Time(), f->gline_time, ServerInstance->Config->ServerName, f->reason.c_str(), "*", user->GetIPString());
+					if (ServerInstance->XLines->AddLine(gl,NULL))
+					{
+						ServerInstance->XLines->ApplyLines();
+					}
+					else
+						delete gl;
+				}
+				return 1;
 			}
-			return 1;
 		}
 		return 0;
 	}
+	return 0;
+}
 
-	virtual void OnRehash(const std::string &parameter)
+void FilterBase::OnRehash(User* user, const std::string &parameter)
+{
+	ConfigReader* MyConf = new ConfigReader(ServerInstance);
+	std::vector<std::string>().swap(exemptfromfilter);
+	for (int index = 0; index < MyConf->Enumerate("exemptfromfilter"); ++index)
 	{
+		std::string chan = MyConf->ReadValue("exemptfromfilter", "channel", index);
+		if (!chan.empty()) {
+			exemptfromfilter.push_back(chan);
+		}
 	}
-	
-	virtual Version GetVersion()
+	delete MyConf;
+}
+
+Version FilterBase::GetVersion()
+{
+	return Version(1,1,0,2,VF_VENDOR|VF_COMMON,API_VERSION);
+}
+
+
+std::string FilterBase::EncodeFilter(FilterResult* filter)
+{
+	std::ostringstream stream;
+	std::string x = filter->freeform;
+
+	/* Hax to allow spaces in the freeform without changing the design of the irc protocol */
+	for (std::string::iterator n = x.begin(); n != x.end(); n++)
+		if (*n == ' ')
+			*n = '\7';
+
+	stream << x << " " << filter->action << " " << (filter->flags.empty() ? "-" : filter->flags) << " " << filter->gline_time << " :" << filter->reason;
+	return stream.str();
+}
+
+FilterResult FilterBase::DecodeFilter(const std::string &data)
+{
+	FilterResult res;
+	irc::tokenstream tokens(data);
+	tokens.GetToken(res.freeform);
+	tokens.GetToken(res.action);
+	tokens.GetToken(res.flags);
+	if (res.flags == "-")
+		res.flags = "";
+	res.FillFlags(res.flags);
+	tokens.GetToken(res.gline_time);
+	tokens.GetToken(res.reason);
+
+	/* Hax to allow spaces in the freeform without changing the design of the irc protocol */
+	for (std::string::iterator n = res.freeform.begin(); n != res.freeform.end(); n++)
+		if (*n == '\7')
+			*n = ' ';
+
+	return res;
+}
+
+void FilterBase::OnSyncOtherMetaData(Module* proto, void* opaque, bool displayable)
+{
+	this->SyncFilters(proto, opaque);
+}
+
+void FilterBase::SendFilter(Module* proto, void* opaque, FilterResult* iter)
+{
+	proto->ProtoSendMetaData(opaque, TYPE_OTHER, NULL, "filter", EncodeFilter(iter));
+}
+
+void FilterBase::OnDecodeMetaData(int target_type, void* target, const std::string &extname, const std::string &extdata)
+{
+	if ((target_type == TYPE_OTHER) && (extname == "filter"))
 	{
-		// This is version 2 because version 1.x is the unreleased unrealircd module
-		return Version(1,1,0,2,VF_VENDOR,API_VERSION);
+		FilterResult data = DecodeFilter(extdata);
+		this->AddFilter(data.freeform, data.action, data.reason, data.gline_time, data.flags);
 	}
-};
+}
+