Initial implementation of callerid, provided by aquanight. Untested as of yet. Probably could use a little of the /watch love to speed up removals in the future.

git-svn-id: http://svn.inspircd.org/repository/trunk/inspircd@8735 e03df62e-2008-0410-955e-edbf42e46eb7

1 files changed, 316 insertions, 0 deletions

diff --git a/src/modules/m_callerid.cpp b/src/modules/m_callerid.cpp
new file mode 100644
index 000000000..18f15d03d
--- /dev/null
+++ b/src/modules/m_callerid.cpp
@@ -0,0 +1,316 @@
+#include "inspircd.h"
+#include "users.h"
+#include "channels.h"
+#include "modules.h"
+
+#include <set>
+
+/* $ModDesc: Implementation of callerid (umode +g & /accept, ala hybrid etc) */
+
+class callerid_data
+{
+ public:
+	time_t lastnotify;
+	std::set<User*> accepting;
+};
+
+callerid_data* GetData(User* who, bool extend = true)
+{
+	callerid_data* dat;
+	if (who->GetExt("callerid_data", dat))
+	{
+		return dat;
+	}
+	else
+	{
+		if (extend)
+		{
+			dat = new callerid_data;
+			dat->lastnotify = 0; // Can't init in struct.
+			who->Extend("callerid_data", dat);
+			return dat;
+		}
+		else
+		{
+			return NULL;
+		}
+	}
+}
+
+void RemoveData(User* who)
+{
+	callerid_data* dat;
+	who->GetExt("callerid_data", dat);
+	if (!dat) return;
+	who->Shrink("callerid_data");
+	delete dat;
+}
+
+void RemoveFromAllAccepts(InspIRCd* ServerInstance, User* who)
+{
+	for (user_hash::iterator i = ServerInstance->clientlist->begin(); i != ServerInstance->clientlist->end(); ++i)
+	{
+		callerid_data* dat = GetData(i->second, false);
+		if (!dat) continue;
+		std::set<User*>& accepting = dat->accepting;
+		std::set<User*>::iterator i = accepting.find(who);
+		if (i == accepting.end()) continue;
+		accepting.erase(i);
+	}
+}
+
+class CommandAccept : public Command
+{
+private:
+	unsigned int& maxaccepts;
+public:
+	CommandAccept(InspIRCd* Instance, unsigned int& max) : Command(Instance, "ACCEPT", 0, 1), maxaccepts(max)
+	{
+		source = "m_callerid.so";
+		syntax = "{[+|-]<nicks>}|*}";
+	}
+
+	/* Will take any number of nicks, which can be seperated by spaces, commas, or a mix.
+	 * - in front of any nick removes, and an * lists. This effectively means you can do:
+	 * /accept nick1,nick2,nick3 *
+	 * to add 3 nicks and then show your list
+	 */
+	CmdResult Handle(const char** parameters, int pcnt, User* user)
+	{
+		if (pcnt < 1)
+		{
+			/* Command stuff should've dealt with this already */
+			return CMD_FAILURE;
+		}
+		/* Even if callerid mode is not set, we let them manage their ACCEPT list so that if they go +g they can
+		 * have a list already setup. */
+		bool atleastonechange = false;
+		for (int i = 0; i < pcnt; ++i)
+		{
+			const char* arg = parameters[i];
+			irc::commasepstream css(arg);
+			std::string tok;
+			while (css.GetToken(tok))
+			{
+				if (tok.length() < 1)
+					continue;
+				if (tok == "*")
+				{
+					if (IS_LOCAL(user)) continue;
+					ListAccept(user);
+				}
+				else if (tok[0] == '-')
+				{
+					User* whotoremove = ServerInstance->FindNick(tok.substr(1));
+					if (whotoremove)
+					{
+						atleastonechange = RemoveAccept(user, whotoremove, false) || atleastonechange;
+					}
+				}
+				else
+				{
+					User* whotoadd = ServerInstance->FindNick(tok[0] == '+' ? tok.substr(1) : tok);
+					if (whotoadd)
+					{
+						atleastonechange = AddAccept(user, whotoadd, false) || atleastonechange;
+					}
+					else
+					{
+						user->WriteServ("401 %s %s :No such nick/channel", user->nick, tok.c_str());
+					}
+				}
+			}
+		}
+		return atleastonechange ? CMD_FAILURE : CMD_SUCCESS;
+	}
+
+	void ListAccept(User* user)
+	{
+		callerid_data* dat = GetData(user, false);
+		if (dat)
+		{
+			for (std::set<User*>::iterator i = dat->accepting.begin(); i != dat->accepting.end(); ++i)
+			{
+				user->WriteServ("281 %s %s", user->nick, (*i)->nick);
+			}
+		}
+		user->WriteServ("282 %s :End of ACCEPT list", user->nick);
+	}
+
+	bool AddAccept(User* user, User* whotoadd, bool quiet)
+	{
+		callerid_data* dat = GetData(user, true);
+		std::set<User*>& accepting = dat->accepting;
+		if (accepting.size() >= maxaccepts)
+		{
+			if (!quiet) user->WriteServ("456 %s :Accept list is full (limit is %d)", user->nick, maxaccepts);
+			return false;
+		}
+		if (!accepting.insert(whotoadd).second)
+		{
+			if (!quiet) user->WriteServ("457 %s %s :is already on your accept list", user->nick, whotoadd->nick);
+			return false;
+		}
+		return true;
+	}
+
+	bool RemoveAccept(User* user, User* whotoremove, bool quiet)
+	{
+		callerid_data* dat = GetData(user, false);
+		if (!dat)
+		{
+			if (!quiet) user->WriteServ("458 %s %s :is not on your accept list", user->nick, whotoremove->nick);
+			return false;
+		}
+		std::set<User*>& accepting = dat->accepting;
+		std::set<User*>::iterator i = accepting.find(whotoremove);
+		if (i == accepting.end())
+		{
+			if (!quiet) user->WriteServ("458 %s %s :is not on your accept list", user->nick, whotoremove->nick);
+			return false;
+		}
+		accepting.erase(i);
+		return true;
+	}
+};
+
+class ModuleCallerID : public Module
+{
+private:
+	CommandAccept *mycommand;
+
+	// Configuration variables:
+	unsigned int maxaccepts; // Maximum ACCEPT entries.
+	bool operoverride; // Operators can override callerid.
+	bool tracknick; // Allow ACCEPT entries to update with nick changes.
+	unsigned int notify_cooldown; // Seconds between notifications.
+
+public:
+	ModuleCallerID(InspIRCd* Me) : Module(Me)
+	{
+		OnRehash(NULL, "");
+		mycommand = new CommandAccept(ServerInstance, maxaccepts);
+		ServerInstance->AddCommand(mycommand);
+		Implementation eventlist[] = { I_OnRehash, I_OnUserPreNick, I_OnUserQuit, I_On005Numeric, I_OnUserPreNotice, I_OnUserPreMessage };
+		ServerInstance->Modules->Attach(eventlist, this, 6);
+	}
+
+	~ModuleCallerID()
+	{
+		delete mycommand;
+	}
+
+	Version GetVersion()
+	{
+		return Version(1, 0, 0, 0, VF_COMMON | VF_VENDOR, API_VERSION);
+	}
+
+	void On005Numeric(std::string& output)
+	{
+		output += " CALLERID=g";
+	}
+
+	int PreText(User* user, User* dest, std::string& text, bool notice)
+	{
+		if (!dest->IsModeSet('g')) return 0;
+		if (operoverride && IS_OPER(user)) return 0;
+		callerid_data* dat = GetData(dest, true);
+		std::set<User*>& accepting = dat->accepting;
+		time_t& lastnotify = dat->lastnotify;
+		std::set<User*>::iterator i = accepting.find(dest);
+		if (i == accepting.end())
+		{
+			time_t now = time(NULL);
+			/* +g and *not* accepted */
+			user->WriteServ("716 %s %s :is in +g mode (server-side ignore).", user->nick, dest->nick);
+			if (now > (lastnotify + (time_t)notify_cooldown))
+			{
+				user->WriteServ("717 %s %s :has been informed that you messaged them.", user->nick, dest->nick);
+				dest->WriteServ("718 %s %s %s@%s :is messaging you, and you have umode +g", dest->nick, user->nick, user->ident, user->dhost);
+				lastnotify = now;
+			}
+			return 1;
+		}
+		return 0;
+	}
+
+	int OnUserPreMessage(User* user, void* dest, int target_type, std::string& text, char status, CUList &exempt_list)
+	{
+		if (IS_LOCAL(user) && target_type == TYPE_USER)
+			return PreText(user, (User*)dest, text, true);
+		return 0;
+	}
+
+	int OnUserPreNotice(User* user, void* dest, int target_type, std::string& text, char status, CUList &exempt_list)
+	{
+		if (IS_LOCAL(user) && target_type == TYPE_USER)
+			return PreText(user, (User*)dest, text, true);
+		return 0;
+	}
+
+	int OnUserPreNick(User* user, const std::string& newnick)
+	{
+		if (!tracknick)
+			RemoveFromAllAccepts(ServerInstance, user);
+		return 0;
+	}
+
+	void OnUserQuit(User* user, const std::string& message, const std::string& oper_message)
+	{
+		RemoveData(user);
+		RemoveFromAllAccepts(ServerInstance, user);
+	}
+
+	void OnRehash(User* user, const std::string& parameter)
+	{
+		ConfigReader Conf(ServerInstance);
+		int new_maxaccepts, new_cooldown;
+		bool new_override, new_track;
+		new_maxaccepts = Conf.ReadInteger("callerid", "maxaccepts", "16", 0, true);
+		switch (Conf.GetError())
+		{
+			case 0: break;
+			case CONF_VALUE_NOT_FOUND:
+				new_maxaccepts = 16;
+				break;
+			case CONF_NOT_A_NUMBER:
+				if (user) user->WriteServ("NOTICE %s :Invalid maxaccepts value '%s', not a number", Conf.ReadValue("callerid", "maxaccepts", "", 0).c_str());
+				throw ModuleException("Invalid maxaccepts value, not a number");
+			case CONF_INT_NEGATIVE:
+				if (user) user->WriteServ("NOTICE %s :Invalid maxaccepts value '%s', negative", Conf.ReadValue("callerid", "maxaccepts", "", 0).c_str());
+				throw ModuleException("Invalid maxaccepts value, negative");
+			default:
+				/* Yikes */
+				throw ModuleException("Invalid maxaccepts value, unknown config error");
+		}
+		new_override = Conf.ReadFlag("callerid", "operoverride", "0", 0);
+		if (Conf.GetError() == CONF_VALUE_NOT_FOUND) new_override = false;
+		new_track = Conf.ReadFlag("callerid", "tracknick", "0", 0);
+		if (Conf.GetError() == CONF_VALUE_NOT_FOUND) new_track = false;
+		new_cooldown = Conf.ReadInteger("callerid", "cooldown", "60", 0, true);
+		switch (Conf.GetError())
+		{
+			case 0: break;
+			case CONF_VALUE_NOT_FOUND:
+				new_cooldown = 16;
+				break;
+			case CONF_NOT_A_NUMBER:
+				if (user) user->WriteServ("NOTICE %s :Invalid cooldown value '%s', not a number", Conf.ReadValue("callerid", "maxaccepts", "", 0).c_str());
+				throw ModuleException("Invalid cooldown value, not a number");
+			case CONF_INT_NEGATIVE:
+				if (user) user->WriteServ("NOTICE %s :Invalid cooldown value '%s', negative", Conf.ReadValue("callerid", "maxaccepts", "", 0).c_str());
+				throw ModuleException("Invalid cooldown value, negative");
+			default:
+				/* Yikes */
+				throw ModuleException("Invalid maxaccepts value, unknown config error");
+		}
+		maxaccepts = new_maxaccepts;
+		notify_cooldown = new_cooldown;
+		operoverride = new_override;
+		tracknick = new_track;
+	}
+};
+
+MODULE_INIT(ModuleCallerID)
+
+