1 /* +------------------------------------+
\r * | Inspire Internet Relay Chat Daemon |
\r * +------------------------------------+
\r *
\r * InspIRCd: (C) 2002-2007 InspIRCd Development Team
\r * See: http://www.inspircd.org/wiki/index.php/Credits
\r *
\r * This program is free but copyrighted software; see
\r * the file COPYING for details.
\r *
\r * ---------------------------------------------------
\r */
\r\r#include "inspircd.h"
\r#include "users.h"
\r#include "channels.h"
\r#include "modules.h"
\r#include "hashcomp.h"
\r\r/* $ModDesc: Attempt to block /amsg, at least some of the irritating mIRC scripts. */
\r\renum BlockAction { IBLOCK_KILL, IBLOCK_KILLOPERS, IBLOCK_NOTICE, IBLOCK_NOTICEOPERS, IBLOCK_SILENT };
\r/* IBLOCK_NOTICE - Send a notice to the user informing them of what happened.
\r * IBLOCK_NOTICEOPERS - Send a notice to the user informing them and send an oper notice.
\r * IBLOCK_SILENT - Generate no output, silently drop messages.
\r * IBLOCK_KILL - Kill the user with the reason "Global message (/amsg or /ame) detected".
\r * IBLOCK_KILLOPERS - As above, but send an oper notice as well. This is the default.
\r */
\r\r/** Holds a blocked message's details
\r */
\rclass BlockedMessage : public classbase
\r{
\rpublic:
\r std::string message;
\r irc::string target;
\r time_t sent;
\r\r BlockedMessage(const std::string &msg, const irc::string &tgt, time_t when)
\r : message(msg), target(tgt), sent(when)
\r {
\r }
\r};
\r\rclass ModuleBlockAmsg : public Module
\r{
\r int ForgetDelay;
\r BlockAction action;
\r \r public:
\r ModuleBlockAmsg(InspIRCd* Me)
\r : Module(Me)
\r {
\r \r this->OnRehash(NULL,"");
\r }
\r\r void Implements(char* List)
\r {
\r List[I_OnRehash] = List[I_OnPreCommand] = List[I_OnCleanup] = 1;
\r }
\r \r virtual ~ModuleBlockAmsg()
\r {
\r }
\r \r virtual Version GetVersion()
\r {
\r return Version(1,1,0,0,VF_VENDOR,API_VERSION);
\r }
\r \r virtual void OnRehash(userrec* user, const std::string ¶meter)
\r {
\r ConfigReader Conf(ServerInstance);
\r \r ForgetDelay = Conf.ReadInteger("blockamsg", "delay", 0, false);
\r \r if(Conf.GetError() == CONF_VALUE_NOT_FOUND)
\r ForgetDelay = -1;
\r \r std::string act = Conf.ReadValue("blockamsg", "action", 0);
\r \r if(act == "notice")
\r action = IBLOCK_NOTICE;
\r else if(act == "noticeopers")
\r action = IBLOCK_NOTICEOPERS;
\r else if(act == "silent")
\r action = IBLOCK_SILENT;
\r else if(act == "kill")
\r action = IBLOCK_KILL;
\r else
\r action = IBLOCK_KILLOPERS;
\r }
\r\r virtual int OnPreCommand(const std::string &command, const char** parameters, int pcnt, userrec *user, bool validated, const std::string &original_line)
\r {
\r // Don't do anything with unregistered users, or remote ones.
\r if(!user || (user->registered != REG_ALL) || !IS_LOCAL(user))
\r return 0;
\r \r // We want case insensitive command comparison.
\r // Add std::string contructor for irc::string :x
\r irc::string cmd = command.c_str();
\r \r if(validated && (cmd == "PRIVMSG" || cmd == "NOTICE") && (pcnt >= 2))
\r {
\r // parameters[0] should have the target(s) in it.
\r // I think it will be faster to first check if there are any commas, and if there are then try and parse it out.
\r // Most messages have a single target so...
\r \r int targets = 1;
\r int userchans = 0;
\r \r if(*parameters[0] != '#')
\r {
\r // Decrement if the first target wasn't a channel.
\r targets--;
\r }
\r \r for(const char* c = parameters[0]; *c; c++)
\r if((*c == ',') && *(c+1) && (*(c+1) == '#'))
\r targets++;
\r \r /* targets should now contain the number of channel targets the msg/notice was pointed at.
\r * If the msg/notice was a PM there should be no channel targets and 'targets' should = 0.
\r * We don't want to block PMs so...
\r */
\r if(targets == 0)
\r {
\r return 0;
\r }
\r \r userchans = user->chans.size();
\r\r // Check that this message wasn't already sent within a few seconds.
\r BlockedMessage* m;
\r user->GetExt("amsgblock", m);
\r \r // If the message is identical and within the time.
\r // We check the target is *not* identical, that'd straying into the realms of flood control. Which isn't what we're doing...
\r // OR
\r // The number of target channels is equal to the number of channels the sender is on..a little suspicious.
\r // Check it's more than 1 too, or else users on one channel would have fun.
\r if((m && (m->message == parameters[1]) && (m->target != parameters[0]) && (ForgetDelay != -1) && (m->sent >= ServerInstance->Time()-ForgetDelay)) || ((targets > 1) && (targets == userchans)))
\r {
\r // Block it...
\r if(action == IBLOCK_KILLOPERS || action == IBLOCK_NOTICEOPERS)
\r ServerInstance->WriteOpers("*** %s had an /amsg or /ame denied", user->nick);
\r\r if(action == IBLOCK_KILL || action == IBLOCK_KILLOPERS)
\r userrec::QuitUser(ServerInstance, user, "Global message (/amsg or /ame) detected");
\r else if(action == IBLOCK_NOTICE || action == IBLOCK_NOTICEOPERS)
\r user->WriteServ( "NOTICE %s :Global message (/amsg or /ame) detected", user->nick);
\r \r return 1;
\r }
\r \r if(m)
\r {
\r // If there's already a BlockedMessage allocated, use it.
\r m->message = parameters[1];
\r m->target = parameters[0];
\r m->sent = ServerInstance->Time();
\r }
\r else
\r {
\r m = new BlockedMessage(parameters[1], parameters[0], ServerInstance->Time());
\r user->Extend("amsgblock", (char*)m);
\r }
\r }
\r return 0;
\r }
\r \r void OnCleanup(int target_type, void* item)
\r {
\r if(target_type == TYPE_USER)
\r {
\r userrec* user = (userrec*)item;
\r BlockedMessage* m;
\r user->GetExt("amsgblock", m);
\r if(m)
\r {
\r DELETE(m);
\r user->Shrink("amsgblock");
\r }
\r }
\r }
\r};
\r\r\rMODULE_INIT(ModuleBlockAmsg)
\r