Brain really must remember svn add.

git-svn-id: http://svn.inspircd.org/repository/trunk/inspircd@6868 e03df62e-2008-0410-955e-edbf42e46eb7

1 files changed, 246 insertions, 0 deletions

diff --git a/src/modules/m_invisible.cpp b/src/modules/m_invisible.cpp
new file mode 100644
index 000000000..35395ed15
--- /dev/null
+++ b/src/modules/m_invisible.cpp
@@ -0,0 +1,246 @@
+/*       +------------------------------------+
+ *       | Inspire Internet Relay Chat Daemon |
+ *       +------------------------------------+
+ *
+ *  InspIRCd: (C) 2002-2007 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.
+ *
+ * ---------------------------------------------------
+ */
+
+#include "users.h"
+#include "channels.h"
+#include "modules.h"
+#include "inspircd.h"
+
+/* $ModDesc: Allows for opered clients to join channels without being seen, similar to unreal 3.1 +I mode */
+
+static ConfigReader* conf;
+
+class QuietOper : public VisData
+{
+ public:
+	QuietOper()
+	{
+	}
+
+	virtual ~QuietOper()
+	{
+	}
+
+	virtual bool VisibleTo(userrec* user)
+	{
+		return IS_OPER(user);
+	}
+};
+
+
+class InvisibleMode : public ModeHandler
+{
+	QuietOper* qo;
+ public:
+	InvisibleMode(InspIRCd* Instance) : ModeHandler(Instance, 'Q', 0, 0, false, MODETYPE_USER, true)
+	{
+		qo = new QuietOper();
+	}
+
+	~InvisibleMode()
+	{
+		for (user_hash::iterator i = ServerInstance->clientlist->begin(); i != ServerInstance->clientlist->end(); i++)
+			if (i->second->Visibility == qo)
+				i->second->Visibility = NULL;
+		delete qo;
+	}
+
+	ModeAction OnModeChange(userrec* source, userrec* dest, chanrec* channel, std::string &parameter, bool adding)
+	{
+		if ((source != dest) && (!*source->oper))
+			return MODEACTION_DENY;
+
+		if (dest->IsModeSet('Q') != adding)
+		{
+			bool ok = false;
+
+			for (int j = 0; j < conf->Enumerate("type"); j++)
+			{
+				std::string opertype = conf->ReadValue("type","name",j);
+				if (opertype == source->oper)
+				{
+					ok = conf->ReadFlag("type", "canquiet", j);
+					break;
+				}
+			}
+
+			if (!ok)
+			{
+				source->WriteServ("481 %s :Permission Denied - You do not have access to become invisible via user mode +Q", source->nick);
+				return MODEACTION_DENY;
+			}
+
+			dest->SetMode('Q', adding);
+			/* User appears to vanish or appear from nowhere */
+			for (UCListIter f = dest->chans.begin(); f != dest->chans.end(); f++)
+			{
+				CUList *ulist = f->first->GetUsers();
+				char tb[MAXBUF];
+
+				snprintf(tb,MAXBUF,":%s %s %s", dest->GetFullHost(), adding ? "PART" : "JOIN", f->first->name);
+				std::string out = tb;
+				std::string n = this->ServerInstance->Modes->ModeString(dest, f->first);
+
+				for (CUList::iterator i = ulist->begin(); i != ulist->end(); i++)
+				{
+					/* User only appears to vanish for non-opers */
+					if (IS_LOCAL(i->second) && !IS_OPER(i->second))
+					{
+						i->second->Write(out);
+						if (!n.empty() && !adding)
+							i->second->WriteServ("MODE %s +%s", f->first->name, n.c_str());
+					}
+				}
+			}
+			return MODEACTION_ALLOW;
+		}
+		else
+		{
+			return MODEACTION_DENY;
+		}
+	}
+};
+
+class InvisibleDeOper : public ModeWatcher
+{
+ private:
+	InspIRCd* Srv;
+ public:
+	InvisibleDeOper(InspIRCd* Instance) : ModeWatcher(Instance, 'o', MODETYPE_USER), Srv(Instance)
+	{
+	}
+
+	bool BeforeMode(userrec* source, userrec* dest, chanrec* channel, std::string &param, bool adding, ModeType type)
+	{
+		/* Users who are opers and have +Q get their +Q removed when they deoper */
+		if ((!adding) && (dest->IsModeSet('Q')))
+		{
+			const char* newmodes[] = { dest->nick, "-Q" };
+			ServerInstance->Modes->Process(newmodes, 2, source, true);
+		}
+		return true;
+	}
+};
+
+
+class ModuleInvisible : public Module
+{
+ private:
+	InvisibleMode* qm;
+	InvisibleDeOper* ido;
+ public:
+	ModuleInvisible(InspIRCd* Me)
+		: Module::Module(Me)
+	{
+		conf = new ConfigReader(ServerInstance);
+		qm = new InvisibleMode(ServerInstance);
+		if (!ServerInstance->AddMode(qm, 'Q'))
+			throw ModuleException("Could not add new modes!");
+		ido = new InvisibleDeOper(ServerInstance);
+		if (!ServerInstance->AddModeWatcher(ido))
+			throw ModuleException("Could not add new mode watcher on usermode +o!");
+	}
+
+	virtual ~ModuleInvisible()
+	{
+		ServerInstance->Modes->DelMode(qm);
+		ServerInstance->Modes->DelModeWatcher(ido);
+		DELETE(qm);
+		DELETE(ido);
+		DELETE(conf);
+	}
+
+	virtual Version GetVersion()
+	{
+		return Version(1, 1, 0, 0, VF_COMMON | VF_VENDOR, API_VERSION);
+	}
+
+	void Implements(char* List)
+	{
+		List[I_OnUserJoin] = List[I_OnUserPart] = List[I_OnUserQuit] = List[I_OnRehash] = 1;
+	}
+	
+	virtual void OnUserJoin(userrec* user, chanrec* channel, bool &silent)
+	{
+		if (user->IsModeSet('Q'))
+		{
+			silent = true;
+			/* Because we silenced the event, make sure it reaches the user whos joining (but only them of course) */
+			user->WriteFrom(user, "JOIN %s", channel->name);
+		}
+	}
+
+	virtual void OnRehash(userrec* user, const std::string &parameter)
+	{
+		DELETE(conf);
+		conf = new ConfigReader(ServerInstance);
+	}
+
+	void OnUserPart(userrec* user, chanrec* channel, const std::string &partmessage, bool &silent)
+	{
+		if (user->IsModeSet('Q'))
+		{
+			silent = true;
+			/* Because we silenced the event, make sure it reaches the user whos leaving (but only them of course) */
+			user->WriteFrom(user, "PART %s%s%s", channel->name,
+					partmessage.empty() ? "" : " :",
+					partmessage.empty() ? "" : partmessage.c_str());
+		}
+	}
+
+	void OnUserQuit(userrec* user, const std::string &reason, const std::string &oper_message)
+	{
+		if (user->IsModeSet('Q'))
+		{
+			command_t* parthandler = ServerInstance->Parser->GetHandler("PART");
+			std::vector<std::string> to_leave;
+			const char* parameters[2];
+			if (parthandler)
+			{
+				for (UCListIter f = user->chans.begin(); f != user->chans.end(); f++)
+						to_leave.push_back(f->first->name);
+				/* We cant do this neatly in one loop, as we are modifying the map we are iterating */
+				for (std::vector<std::string>::iterator n = to_leave.begin(); n != to_leave.end(); n++)
+				{
+					parameters[0] = n->c_str();
+					/* This triggers our OnUserPart, above, making the PART silent */
+					parthandler->Handle(parameters, 1, user);
+				}
+			}
+		}
+	}
+};
+
+class ModuleInvisibleFactory : public ModuleFactory
+{
+ public:
+	ModuleInvisibleFactory()
+	{
+	}
+	
+	~ModuleInvisibleFactory()
+	{
+	}
+	
+	virtual Module * CreateModule(InspIRCd* Me)
+	{
+		return new ModuleInvisible(Me);
+	}
+	
+};
+
+extern "C" void * init_module( void )
+{
+	return new ModuleInvisibleFactory;
+}
+