-/* +------------------------------------+\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
\ No newline at end of file
+/*
+ * InspIRCd -- Internet Relay Chat Daemon
+ *
+ * Copyright (C) 2013, 2018 Sadie Powell <sadie@witchery.services>
+ * Copyright (C) 2012-2016 Attila Molnar <attilamolnar@hush.com>
+ * Copyright (C) 2012, 2019 Robby <robby@chatbelgie.be>
+ * Copyright (C) 2009 Daniel De Graaf <danieldg@inspircd.org>
+ * Copyright (C) 2007-2008 Dennis Friis <peavey@inspircd.org>
+ * Copyright (C) 2006, 2010 Craig Edwards <brain@inspircd.org>
+ * Copyright (C) 2006 Oliver Lupton <om@inspircd.org>
+ *
+ * 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 <http://www.gnu.org/licenses/>.
+ */
+
+
+#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<BlockedMessage> 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)
projects / user / henk / code / inspircd.git / blobdiff