Add channames module [jackmcbarn]

git-svn-id: http://svn.inspircd.org/repository/trunk/inspircd@11749 e03df62e-2008-0410-955e-edbf42e46eb7

1 files changed, 145 insertions, 0 deletions

diff --git a/src/modules/m_channames.cpp b/src/modules/m_channames.cpp
new file mode 100644
index 000000000..8b75a06a7
--- /dev/null
+++ b/src/modules/m_channames.cpp
@@ -0,0 +1,145 @@
+/*       +------------------------------------+
+ *       | Inspire Internet Relay Chat Daemon |
+ *       +------------------------------------+
+ *
+ *  InspIRCd: (C) 2002-2009 InspIRCd Development Team
+ * See: http://wiki.inspircd.org/Credits
+ *
+ * This program is free but copyrighted software; see
+ *            the file COPYING for details.
+ *
+ * ---------------------------------------------------
+ */
+
+#include "inspircd.h"
+
+/* $ModDesc: Implements config tags which allow changing characters allowed in channel names */
+
+static bool allowedmap[256];
+
+class NewIsChannelHandler : public HandlerBase2<bool, const char*, size_t>
+{
+	InspIRCd* Server;
+ public:
+	NewIsChannelHandler(InspIRCd* Srv) : Server(Srv) { }
+	virtual ~NewIsChannelHandler() { }
+	virtual bool Call(const char*, size_t);
+};
+
+bool NewIsChannelHandler::Call(const char* chname, size_t max)
+{
+		const char *c = chname + 1;
+
+		/* check for no name - don't check for !*chname, as if it is empty, it won't be '#'! */
+		if (!chname || *chname != '#')
+			return false;
+
+		while (*c)
+			if (!allowedmap[(unsigned int)(*c++)]) return false;
+
+		size_t len = c - chname;
+		return len <= max;
+}
+
+class ModuleChannelNames : public Module
+{
+ private:
+	InspIRCd* ServerInstance;
+	NewIsChannelHandler* myhandler;
+	caller2<bool, const char*, size_t> * rememberer;
+	bool badchan;
+
+ public:
+	ModuleChannelNames(InspIRCd* Me) : Module(Me)
+	{
+		rememberer = (caller2<bool, const char*, size_t> *) malloc(sizeof(caller2<bool, const char*, size_t>));
+		ServerInstance = Me;
+		*rememberer = ServerInstance->IsChannel;
+		myhandler = new NewIsChannelHandler(ServerInstance);
+		ServerInstance->IsChannel = myhandler;
+		badchan = false;
+		Implementation eventlist[] = { I_OnRehash, I_OnUserKick };
+		ServerInstance->Modules->Attach(eventlist, this, 2);
+		OnRehash(NULL);
+	}
+
+	void ValidateChans()
+	{
+		badchan = true;
+		std::vector<Channel*> chanvec;
+		for (chan_hash::const_iterator i = ServerInstance->chanlist->begin(); i != ServerInstance->chanlist->end(); ++i)
+		{
+			if (!ServerInstance->IsChannel(i->second->name.c_str(), MAXBUF))
+				chanvec.push_back(i->second);
+		}
+		std::vector<Channel*>::reverse_iterator c2 = chanvec.rbegin();
+		while (c2 != chanvec.rend())
+		{
+			Channel* c = *c2++;
+			if (c->IsModeSet('P') && c->GetUserCounter())
+			{
+				std::vector<std::string> modes;
+				modes.push_back(c->name);
+				modes.push_back("-P");
+
+				ServerInstance->SendMode(modes, ServerInstance->FakeClient);
+				ServerInstance->PI->SendMode(c->name, ServerInstance->Modes->GetLastParseParams(), ServerInstance->Modes->GetLastParseTranslate());
+			}
+			const UserMembList* users = c->GetUsers();
+			for(UserMembCIter j = users->begin(); j != users->end(); ++j)
+				if (IS_LOCAL(j->first) && !c->ServerKickUser(j->first, "Channel name no longer valid", NULL))
+					delete c;
+		}
+		badchan = false;
+	}
+
+	virtual void OnRehash(User* user)
+	{
+		ConfigReader Conf(ServerInstance);
+		std::string denyToken = Conf.ReadValue("channames", "denyrange", 0);
+		std::string allowToken = Conf.ReadValue("channames", "allowrange", 0);
+		memset(allowedmap, 1, sizeof(allowedmap));
+
+		irc::portparser denyrange(denyToken, false);
+		int denyno = -1;
+		while (0 != (denyno = denyrange.GetToken()))
+			allowedmap[(unsigned char)(denyno)] = false;
+
+		irc::portparser allowrange(allowToken, false);
+		int allowno = -1;
+		while (0 != (allowno = allowrange.GetToken()))
+			allowedmap[(unsigned char)(allowno)] = true;
+
+		allowedmap[7] = false;
+		allowedmap[' '] = false;
+		allowedmap[','] = false;
+
+		ValidateChans();
+	}
+
+	virtual void OnUserKick(User* source, Membership* memb, const std::string &reason, CUList& except_list)
+	{
+		if (badchan)
+		{
+			const UserMembList* users = memb->chan->GetUsers();
+			for(UserMembCIter i = users->begin(); i != users->end(); i++)
+				if (i->first != memb->user)
+					except_list.insert(i->first);
+		}
+	}
+
+	virtual ~ModuleChannelNames()
+	{
+		delete myhandler;
+		ServerInstance->IsChannel = *rememberer;
+		free(rememberer);
+		ValidateChans();
+	}
+
+	virtual Version GetVersion()
+	{
+		return Version("$Id$", VF_VENDOR,API_VERSION);
+	}
+};
+
+MODULE_INIT(ModuleChannelNames)