X-Git-Url: https://git.netwichtig.de/gitweb/?a=blobdiff_plain;f=src%2Fmodules%2Fm_blockamsg.cpp;h=8e4b09304e0e92743ab2cfd90d4b69db9e3a1594;hb=bde0e7e84668df48afaffda7a52eddc0aca543d3;hp=5ff0c110065f8e9f2cd5121e64e91a1527e86256;hpb=bab14f0dd2345c9d7dcbc47c918563709e1ac094;p=user%2Fhenk%2Fcode%2Finspircd.git diff --git a/src/modules/m_blockamsg.cpp b/src/modules/m_blockamsg.cpp index 5ff0c1100..8e4b09304 100644 --- a/src/modules/m_blockamsg.cpp +++ b/src/modules/m_blockamsg.cpp @@ -1 +1,152 @@ -/* +------------------------------------+ * | 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 "inspircd.h" #include "users.h" #include "channels.h" #include "modules.h" #include "hashcomp.h" /* $ModDesc: Attempt to block /amsg, at least some of the irritating mIRC scripts. */ enum BlockAction { IBLOCK_KILL, IBLOCK_KILLOPERS, IBLOCK_NOTICE, IBLOCK_NOTICEOPERS, IBLOCK_SILENT }; /* IBLOCK_NOTICE - Send a notice to the user informing them of what happened. * IBLOCK_NOTICEOPERS - Send a notice to the user informing them and send an oper notice. * IBLOCK_SILENT - Generate no output, silently drop messages. * IBLOCK_KILL - Kill the user with the reason "Global message (/amsg or /ame) detected". * IBLOCK_KILLOPERS - As above, but send an oper notice as well. This is the default. */ /** Holds a blocked message's details */ class BlockedMessage : public classbase { public: std::string message; irc::string target; time_t sent; BlockedMessage(const std::string &msg, const irc::string &tgt, time_t when) : message(msg), target(tgt), sent(when) { } }; class ModuleBlockAmsg : public Module { int ForgetDelay; BlockAction action; public: ModuleBlockAmsg(InspIRCd* Me) : Module(Me) { this->OnRehash(NULL,""); } void Implements(char* List) { List[I_OnRehash] = List[I_OnPreCommand] = List[I_OnCleanup] = 1; } virtual ~ModuleBlockAmsg() { } virtual Version GetVersion() { return Version(1,1,0,0,VF_VENDOR,API_VERSION); } virtual void OnRehash(userrec* user, const std::string ¶meter) { ConfigReader Conf(ServerInstance); ForgetDelay = Conf.ReadInteger("blockamsg", "delay", 0, false); if(Conf.GetError() == CONF_VALUE_NOT_FOUND) ForgetDelay = -1; std::string act = Conf.ReadValue("blockamsg", "action", 0); if(act == "notice") action = IBLOCK_NOTICE; else if(act == "noticeopers") action = IBLOCK_NOTICEOPERS; else if(act == "silent") action = IBLOCK_SILENT; else if(act == "kill") action = IBLOCK_KILL; else action = IBLOCK_KILLOPERS; } virtual int OnPreCommand(const std::string &command, const char** parameters, int pcnt, userrec *user, bool validated, const std::string &original_line) { // Don't do anything with unregistered users, or remote ones. if(!user || (user->registered != REG_ALL) || !IS_LOCAL(user)) return 0; // We want case insensitive command comparison. // Add std::string contructor for irc::string :x irc::string cmd = command.c_str(); if(validated && (cmd == "PRIVMSG" || cmd == "NOTICE") && (pcnt >= 2)) { // parameters[0] should have the target(s) in it. // I think it will be faster to first check if there are any commas, and if there are then try and parse it out. // Most messages have a single target so... int targets = 1; int userchans = 0; if(*parameters[0] != '#') { // Decrement if the first target wasn't a channel. targets--; } for(const char* c = parameters[0]; *c; c++) if((*c == ',') && *(c+1) && (*(c+1) == '#')) targets++; /* targets should now contain the number of channel targets the msg/notice was pointed at. * If the msg/notice was a PM there should be no channel targets and 'targets' should = 0. * We don't want to block PMs so... */ if(targets == 0) { return 0; } userchans = user->chans.size(); // Check that this message wasn't already sent within a few seconds. BlockedMessage* m; user->GetExt("amsgblock", m); // If the message is identical and within the time. // We check the target is *not* identical, that'd straying into the realms of flood control. Which isn't what we're doing... // OR // The number of target channels is equal to the number of channels the sender is on..a little suspicious. // Check it's more than 1 too, or else users on one channel would have fun. if((m && (m->message == parameters[1]) && (m->target != parameters[0]) && (ForgetDelay != -1) && (m->sent >= ServerInstance->Time()-ForgetDelay)) || ((targets > 1) && (targets == userchans))) { // Block it... if(action == IBLOCK_KILLOPERS || action == IBLOCK_NOTICEOPERS) ServerInstance->WriteOpers("*** %s had an /amsg or /ame denied", user->nick); if(action == IBLOCK_KILL || action == IBLOCK_KILLOPERS) userrec::QuitUser(ServerInstance, user, "Global message (/amsg or /ame) detected"); else if(action == IBLOCK_NOTICE || action == IBLOCK_NOTICEOPERS) user->WriteServ( "NOTICE %s :Global message (/amsg or /ame) detected", user->nick); return 1; } if(m) { // If there's already a BlockedMessage allocated, use it. m->message = parameters[1]; m->target = parameters[0]; m->sent = ServerInstance->Time(); } else { m = new BlockedMessage(parameters[1], parameters[0], ServerInstance->Time()); user->Extend("amsgblock", (char*)m); } } return 0; } void OnCleanup(int target_type, void* item) { if(target_type == TYPE_USER) { userrec* user = (userrec*)item; BlockedMessage* m; user->GetExt("amsgblock", m); if(m) { DELETE(m); user->Shrink("amsgblock"); } } } }; MODULE_INIT(ModuleBlockAmsg) \ No newline at end of file +/* + * InspIRCd -- Internet Relay Chat Daemon + * + * Copyright (C) 2013, 2018 Sadie Powell + * Copyright (C) 2012-2016 Attila Molnar + * Copyright (C) 2012, 2019 Robby + * Copyright (C) 2009 Daniel De Graaf + * Copyright (C) 2007-2008 Dennis Friis + * Copyright (C) 2006, 2010 Craig Edwards + * Copyright (C) 2006 Oliver Lupton + * + * This file is part of InspIRCd. InspIRCd is free software: you can + * redistribute it and/or modify it under the terms of the GNU General Public + * License as published by the Free Software Foundation, version 2. + * + * This program is distributed in the hope that it will be useful, but WITHOUT + * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS + * FOR A PARTICULAR PURPOSE. See the GNU General Public License for more + * details. + * + * You should have received a copy of the GNU General Public License + * along with this program. If not, see . + */ + + +#include "inspircd.h" + +enum BlockAction { IBLOCK_KILL, IBLOCK_KILLOPERS, IBLOCK_NOTICE, IBLOCK_NOTICEOPERS, IBLOCK_SILENT }; +/* IBLOCK_NOTICE - Send a notice to the user informing them of what happened. + * IBLOCK_NOTICEOPERS - Send a notice to the user informing them and send an oper notice. + * IBLOCK_SILENT - Generate no output, silently drop messages. + * IBLOCK_KILL - Kill the user with the reason "Global message (/amsg or /ame) detected". + * IBLOCK_KILLOPERS - As above, but send an oper notice as well. This is the default. + */ + +/** Holds a blocked message's details + */ +class BlockedMessage +{ + public: + std::string message; + std::string target; + time_t sent; + + BlockedMessage(const std::string& msg, const std::string& tgt, time_t when) + : message(msg), target(tgt), sent(when) + { + } +}; + +class ModuleBlockAmsg : public Module +{ + unsigned int ForgetDelay; + BlockAction action; + SimpleExtItem blockamsg; + + public: + ModuleBlockAmsg() + : blockamsg("blockamsg", ExtensionItem::EXT_USER, this) + { + } + + Version GetVersion() CXX11_OVERRIDE + { + return Version("Blocks mass messages sent using the /AME and /AMSG commands that exist in clients such as mIRC and HexChat.", VF_VENDOR); + } + + void ReadConfig(ConfigStatus& status) CXX11_OVERRIDE + { + ConfigTag* tag = ServerInstance->Config->ConfValue("blockamsg"); + ForgetDelay = tag->getDuration("delay", 3); + std::string act = tag->getString("action"); + + if (stdalgo::string::equalsci(act, "notice")) + action = IBLOCK_NOTICE; + else if (stdalgo::string::equalsci(act, "noticeopers")) + action = IBLOCK_NOTICEOPERS; + else if (stdalgo::string::equalsci(act, "silent")) + action = IBLOCK_SILENT; + else if (stdalgo::string::equalsci(act, "kill")) + action = IBLOCK_KILL; + else + action = IBLOCK_KILLOPERS; + } + + ModResult OnPreCommand(std::string& command, CommandBase::Params& parameters, LocalUser* user, bool validated) CXX11_OVERRIDE + { + // Don't do anything with unregistered users + if (user->registered != REG_ALL) + return MOD_RES_PASSTHRU; + + if ((validated) && (parameters.size() >= 2) && ((command == "PRIVMSG") || (command == "NOTICE"))) + { + // parameters[0] is the target list, count how many channels are there + unsigned int targets = 0; + // Is the first target a channel? + if (*parameters[0].c_str() == '#') + targets = 1; + + for (const char* c = parameters[0].c_str(); *c; c++) + { + if ((*c == ',') && (*(c+1) == '#')) + targets++; + } + + /* targets should now contain the number of channel targets the msg/notice was pointed at. + * If the msg/notice was a PM there should be no channel targets and 'targets' should = 0. + * We don't want to block PMs so... + */ + if (targets == 0) + return MOD_RES_PASSTHRU; + + // Check that this message wasn't already sent within a few seconds. + BlockedMessage* m = blockamsg.get(user); + + // If the message is identical and within the time. + // We check the target is *not* identical, that'd straying into the realms of flood control. Which isn't what we're doing... + // OR + // The number of target channels is equal to the number of channels the sender is on..a little suspicious. + // Check it's more than 1 too, or else users on one channel would have fun. + if ((m && (m->message == parameters[1]) && (!irc::equals(m->target, parameters[0])) && ForgetDelay && (m->sent >= ServerInstance->Time()-ForgetDelay)) || ((targets > 1) && (targets == user->chans.size()))) + { + // Block it... + if (action == IBLOCK_KILLOPERS || action == IBLOCK_NOTICEOPERS) + ServerInstance->SNO->WriteToSnoMask('a', "%s had an /amsg or /ame blocked", user->nick.c_str()); + + if (action == IBLOCK_KILL || action == IBLOCK_KILLOPERS) + ServerInstance->Users->QuitUser(user, "Attempted to global message (/amsg or /ame)"); + else if (action == IBLOCK_NOTICE || action == IBLOCK_NOTICEOPERS) + user->WriteNotice("Global message (/amsg or /ame) blocked"); + + return MOD_RES_DENY; + } + + if (m) + { + // If there's already a BlockedMessage allocated, use it. + m->message = parameters[1]; + m->target = parameters[0]; + m->sent = ServerInstance->Time(); + } + else + { + m = new BlockedMessage(parameters[1], parameters[0], ServerInstance->Time()); + blockamsg.set(user, m); + } + } + return MOD_RES_PASSTHRU; + } +}; + +MODULE_INIT(ModuleBlockAmsg)