Add Network Buisness Join module by Taros; adapted to 2.0

git-svn-id: http://svn.inspircd.org/repository/trunk/inspircd@11669 e03df62e-2008-0410-955e-edbf42e46eb7

1 files changed, 379 insertions, 0 deletions

diff --git a/src/modules/m_ojoin.cpp b/src/modules/m_ojoin.cpp
new file mode 100644
index 000000000..922a93a8e
--- /dev/null
+++ b/src/modules/m_ojoin.cpp
@@ -0,0 +1,379 @@
+/*       +------------------------------------+
+ *       | 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.
+ *
+ * ---------------------------------------------------
+ */
+
+/*
+ * Written for InspIRCd-1.2 by Taros on the Tel'Laerad M&D Team
+ * <http://tellaerad.net>
+ */
+
+#include "inspircd.h"
+
+/* $ModConfig: <ojoin prefix="!" notice="yes" op="yes">
+ *  Specify the prefix that +Y will grant here, it should be unused.
+ *  Leave prefix empty if you do not wish +Y to grant a prefix
+ *  If notice is set to on, upon ojoin, the server will notice
+ *  the channel saying that the oper is joining on network business
+ *  If op is set to on, it will give them +o along with +Y */
+/* $ModDesc: Provides the /ojoin command, which joins a user to a channel on network business, and gives them +Y, which makes them immune to kick / deop and so on. */
+/* $ModAuthor: Taros */
+/* $ModAuthorMail: taros34@hotmail.com */
+
+/* A note: This will not protect against kicks from services,
+ * ulines, or operoverride. */
+
+#define NETWORK_VALUE 9000000
+
+char NPrefix;
+bool notice;
+bool op;
+
+/** Handle /OJOIN
+ */
+class CommandOjoin : public Command
+{
+ public:
+	bool active;
+	CommandOjoin (InspIRCd* Instance, Module* parent) : Command(Instance,parent,"OJOIN", "o", 1, false, 0)
+	{
+		syntax = "<channel>";
+		active = false;
+		TRANSLATE3(TR_NICK, TR_TEXT, TR_END);
+	}
+
+	CmdResult Handle (const std::vector<std::string>& parameters, User *user)
+	{
+		// Make sure the channel name is allowable.
+		if (!ServerInstance->IsChannel(parameters[0].c_str(), ServerInstance->Config->Limits.ChanMax))
+		{
+			user->WriteServ("NOTICE "+std::string(user->nick)+" :*** Invalid characters in channel name or name too long");
+			return CMD_FAILURE;
+		}
+
+		active = true;
+		Channel* channel = Channel::JoinUser(ServerInstance, user, parameters[0].c_str(), false, "", false);
+		active = false;
+
+		if (channel)
+		{
+			ServerInstance->SNO->WriteGlobalSno('a', std::string(user->nick)+" used OJOIN to join "+channel->name);
+
+			if (!NPrefix)
+			{
+				std::vector<std::string> modes;
+				modes.push_back(parameters[0]);
+				modes.push_back("+Y");
+				modes.push_back(user->nick);
+				ServerInstance->SendMode(modes, ServerInstance->FakeClient);
+				ServerInstance->PI->SendMode(channel->name, ServerInstance->Modes->GetLastParseParams(), ServerInstance->Modes->GetLastParseTranslate());
+			}
+
+			if (notice)
+			{
+				channel = ServerInstance->FindChan(parameters[0]);
+				channel->WriteChannelWithServ(ServerInstance->Config->ServerName, "NOTICE %s :%s joined on official network business.",
+					parameters[0].c_str(), user->nick.c_str());
+				ServerInstance->PI->SendChannelNotice(channel, 0, std::string(user->nick) + " joined on official network business.");
+			}
+
+			return CMD_SUCCESS;
+		}
+		else
+		{
+			user->WriteServ("NOTICE "+std::string(user->nick)+" :*** Could not join "+parameters[0]);
+			return CMD_FAILURE;
+		}
+	}
+};
+
+/** Abstraction of NetworkPrefixBase for channel mode +Y
+ */
+class NetworkPrefix : public ModeHandler
+{
+ public:
+	NetworkPrefix(InspIRCd* Instance, Module* parent)
+		: ModeHandler(Instance, parent, 'Y', 1, 1, true, MODETYPE_CHANNEL, false, NPrefix, 0, TR_NICK)
+// NetworkPrefixBase(Instance,"cm_network_","official user", 388, 389) { }
+// NetworkPrefixBase(InspIRCd* Instance, const std::string &ext, const std::string &mtype, int l, int e) :
+//  extend(ext), type(mtype), list(l), end(e)
+	{
+	}
+
+	ModePair ModeSet(User* source, User* dest, Channel* channel, const std::string &parameter)
+	{
+		User* x = ServerInstance->FindNick(parameter);
+		if (x)
+		{
+			if (!channel->HasUser(x))
+			{
+				return std::make_pair(false, parameter);
+			}
+			else
+			{
+				std::string item = "cm_network_"+std::string(channel->name);
+				if (x->GetExt(item))
+				{
+					return std::make_pair(true, x->nick);
+				}
+				else
+				{
+					return std::make_pair(false, parameter);
+				}
+			}
+		}
+		return std::make_pair(false, parameter);
+	}
+
+	void RemoveMode(Channel* channel, irc::modestacker* stack)
+	{
+		CUList* cl = channel->GetUsers();
+		std::string item = "cm_network_" + std::string(channel->name);
+		std::vector<std::string> mode_junk;
+		mode_junk.push_back(channel->name);
+		irc::modestacker modestack(ServerInstance, false);
+		std::deque<std::string> stackresult;
+
+		for (CUList::iterator i = cl->begin(); i != cl->end(); i++)
+		{
+			if (i->first->GetExt(item))
+			{
+				if (stack)
+					stack->Push(this->GetModeChar(), i->first->nick);
+				else
+					modestack.Push(this->GetModeChar(), i->first->nick);
+			}
+		}
+
+		if (stack)
+			return;
+
+		while (modestack.GetStackedLine(stackresult))
+		{
+			mode_junk.insert(mode_junk.end(), stackresult.begin(), stackresult.end());
+			ServerInstance->SendMode(mode_junk, ServerInstance->FakeClient);
+			mode_junk.erase(mode_junk.begin() + 1, mode_junk.end());
+		}
+	}
+
+	User* FindAndVerify(std::string &parameter, Channel* channel)
+	{
+		User* theuser = ServerInstance->FindNick(parameter);
+		if ((!theuser) || (!channel->HasUser(theuser)))
+		{
+			parameter.clear();
+			return NULL;
+		}
+		return theuser;
+	}
+
+	ModeAction HandleChange(User* source, User* theuser, bool adding, Channel* channel, std::string &parameter)
+	{
+		std::string item = "cm_network_" + std::string(channel->name);
+
+		if (adding)
+		{
+			if (!theuser->GetExt(item))
+			{
+				theuser->Extend(item);
+				parameter = theuser->nick;
+				return MODEACTION_ALLOW;
+			}
+		}
+		else
+		{
+			if (theuser->GetExt(item))
+			{
+				theuser->Shrink(item);
+				parameter = theuser->nick;
+				return MODEACTION_ALLOW;
+			}
+		}
+		return MODEACTION_DENY;
+	}
+
+	unsigned int GetPrefixRank()
+	{
+		return NETWORK_VALUE;
+	}
+
+	void RemoveMode(User* user, irc::modestacker* stack)
+	{
+	}
+
+	ModeAction OnModeChange(User* source, User* dest, Channel* channel, std::string &parameter, bool adding)
+	{
+		User* theuser = FindAndVerify(parameter, channel);
+
+		if (!theuser)
+			return MODEACTION_DENY;
+
+		 // source is a server, or ulined, we'll let them +-Y the user.
+		if (source == ServerInstance->FakeClient ||
+			((source == theuser) && (!adding)) ||
+			(ServerInstance->ULine(source->nick.c_str())) ||
+			(ServerInstance->ULine(source->server)) ||
+			(!*source->server) ||
+			(!IS_LOCAL(source))
+			)
+		{
+			return HandleChange(source, theuser, adding, channel, parameter);
+		}
+		else
+		{
+			// bzzzt, wrong answer!
+			source->WriteNumeric(482, "%s %s :Only servers may change this mode.", source->nick.c_str(), channel->name.c_str());
+			return MODEACTION_DENY;
+		}
+	}
+
+};
+
+class ModuleOjoin : public Module
+{
+	NetworkPrefix* np;
+	CommandOjoin mycommand;
+
+ public:
+
+	ModuleOjoin(InspIRCd* Me)
+		: Module(Me), mycommand(Me, this)
+	{
+		/* Load config stuff */
+		OnRehash(NULL);
+
+		/* Initialise module variables */
+		np = new NetworkPrefix(ServerInstance, this);
+
+		if (!ServerInstance->Modes->AddMode(np))
+		{
+			delete np;
+			throw ModuleException("Could not add new mode!");
+		}
+
+		ServerInstance->AddCommand(&mycommand);
+
+		Implementation eventlist[] = { I_OnUserPreJoin, I_OnUserKick, I_OnUserPart, I_OnAccessCheck, I_OnRehash };
+		ServerInstance->Modules->Attach(eventlist, this, 5);
+	}
+
+	ModResult OnUserPreJoin(User *user, Channel *chan, const char *cname, std::string &privs, const std::string &keygiven)
+	{
+		if (mycommand.active)
+		{
+			if (NPrefix)
+				privs += NPrefix;
+			if (op && privs.find('@') == std::string::npos)
+				privs += '@';
+			return MOD_RES_ALLOW;
+		}
+
+		return MOD_RES_PASSTHRU;
+	}
+
+	void OnUserKick(User* source, User* user, Channel* chan, const std::string &reason, bool &silent)
+	{
+		user->Shrink("cm_network_"+std::string(chan->name));
+	}
+
+	void OnUserPart(User* user, Channel* channel, std::string &partreason, bool &silent)
+	{
+		user->Shrink("cm_network_"+std::string(channel->name));
+	}
+
+	void OnRehash(User* user)
+	{
+		ConfigReader Conf(ServerInstance);
+
+		std::string npre = Conf.ReadValue("ojoin", "prefix", 0);
+		NPrefix = npre.empty() ? 0 : npre[0];
+
+		if (NPrefix && ServerInstance->Modes->FindPrefix(NPrefix))
+			throw ModuleException("Looks like the +Y prefix you picked for m_ojoin is already in use. Pick another.");
+
+		notice = Conf.ReadFlag("ojoin", "notice", "yes", 0);
+		op = Conf.ReadFlag("ojoin", "op", "yes", 0);
+	}
+
+	ModResult OnAccessCheck(User* source,User* dest,Channel* channel,int access_type)
+	{
+		// Here's where we preform access checks, and disallow any kicking/deopping
+		// of +Y users. 
+
+		// If there's no dest, it's not for us.
+		if (!dest || !channel)
+			return MOD_RES_PASSTHRU;
+
+		// If a ulined nickname, or a server is setting the mode, let it
+		// do whatever it wants.
+		if ((ServerInstance->ULine(source->nick.c_str())) || (ServerInstance->ULine(source->server)) || (!*source->server))
+			return MOD_RES_ALLOW;
+
+		std::string network("cm_network_"+channel->name);
+
+		// Don't do anything if they're not +Y
+		if (!dest->GetExt(network))
+			return MOD_RES_PASSTHRU;
+
+		// Let them do whatever they want to themselves.
+		if (source == dest)
+			return MOD_RES_PASSTHRU;
+
+		switch (access_type)
+		{
+			// Disallow deopping of +Y users.
+			case AC_DEOP:
+				source->WriteNumeric(484, source->nick+" "+channel->name+" :Can't deop "+dest->nick+" as they're on official network business.");
+				return MOD_RES_DENY;
+			break;
+
+			// Kicking people who are here on network business is a no no.
+			case AC_KICK:
+				source->WriteNumeric(484, source->nick+" "+channel->name+" :Can't kick "+dest->nick+" as they're on official network business.");
+				return MOD_RES_DENY;
+			break;
+
+			// Yes, they're immune to dehalfopping too.
+			case AC_DEHALFOP:
+				source->WriteNumeric(484, source->nick+" "+channel->name+" :Can't de-halfop "+dest->nick+" as they're on official network business.");
+				return MOD_RES_DENY;
+			break;
+
+			// same with devoice.
+			case AC_DEVOICE:
+				source->WriteNumeric(484, source->nick+" "+channel->name+" :Can't devoice "+dest->nick+" as they're on official network business.");
+				return MOD_RES_DENY;
+			break;
+		}
+
+		// Some other access check that doesn't fall into the above. Let it through.
+		return MOD_RES_PASSTHRU;
+	}
+
+	~ModuleOjoin()
+	{
+		ServerInstance->Modes->DelMode(np);
+		delete np;
+	}
+
+	void Prioritize()
+	{
+		ServerInstance->Modules->SetPriority(this, I_OnUserPreJoin, PRIORITY_FIRST);
+	}
+
+	Version GetVersion()
+	{
+		return Version("Network Buisness Join", VF_COMMON | VF_VENDOR);
+	}
+};
+
+MODULE_INIT(ModuleOjoin)
+