2 * InspIRCd -- Internet Relay Chat Daemon
4 * Copyright (C) 2009 Daniel De Graaf <danieldg@inspircd.org>
5 * Copyright (C) 2008 Pippijn van Steenhoven <pip88nl@gmail.com>
6 * Copyright (C) 2007 Dennis Friis <peavey@inspircd.org>
7 * Copyright (C) 2007 Robin Burchell <robin+git@viroteck.net>
8 * Copyright (C) 2006-2007 Oliver Lupton <oliverlupton@gmail.com>
10 * This file is part of InspIRCd. InspIRCd is free software: you can
11 * redistribute it and/or modify it under the terms of the GNU General Public
12 * License as published by the Free Software Foundation, version 2.
14 * This program is distributed in the hope that it will be useful, but WITHOUT
15 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS
16 * FOR A PARTICULAR PURPOSE. See the GNU General Public License for more
19 * You should have received a copy of the GNU General Public License
20 * along with this program. If not, see <http://www.gnu.org/licenses/>.
26 enum BlockAction { IBLOCK_KILL, IBLOCK_KILLOPERS, IBLOCK_NOTICE, IBLOCK_NOTICEOPERS, IBLOCK_SILENT };
27 /* IBLOCK_NOTICE - Send a notice to the user informing them of what happened.
28 * IBLOCK_NOTICEOPERS - Send a notice to the user informing them and send an oper notice.
29 * IBLOCK_SILENT - Generate no output, silently drop messages.
30 * IBLOCK_KILL - Kill the user with the reason "Global message (/amsg or /ame) detected".
31 * IBLOCK_KILLOPERS - As above, but send an oper notice as well. This is the default.
34 /** Holds a blocked message's details
43 BlockedMessage(const std::string& msg, const std::string& tgt, time_t when)
44 : message(msg), target(tgt), sent(when)
49 class ModuleBlockAmsg : public Module
51 unsigned int ForgetDelay;
53 SimpleExtItem<BlockedMessage> blockamsg;
57 : blockamsg("blockamsg", ExtensionItem::EXT_USER, this)
61 Version GetVersion() CXX11_OVERRIDE
63 return Version("Attempt to block /amsg, at least some of the irritating mIRC scripts.",VF_VENDOR);
66 void ReadConfig(ConfigStatus& status) CXX11_OVERRIDE
68 ConfigTag* tag = ServerInstance->Config->ConfValue("blockamsg");
69 ForgetDelay = tag->getDuration("delay", 3);
70 std::string act = tag->getString("action");
72 if (stdalgo::string::equalsci(act, "notice"))
73 action = IBLOCK_NOTICE;
74 else if (stdalgo::string::equalsci(act, "noticeopers"))
75 action = IBLOCK_NOTICEOPERS;
76 else if (stdalgo::string::equalsci(act, "silent"))
77 action = IBLOCK_SILENT;
78 else if (stdalgo::string::equalsci(act, "kill"))
81 action = IBLOCK_KILLOPERS;
84 ModResult OnPreCommand(std::string& command, CommandBase::Params& parameters, LocalUser* user, bool validated) CXX11_OVERRIDE
86 // Don't do anything with unregistered users
87 if (user->registered != REG_ALL)
88 return MOD_RES_PASSTHRU;
90 if ((validated) && (parameters.size() >= 2) && ((command == "PRIVMSG") || (command == "NOTICE")))
92 // parameters[0] is the target list, count how many channels are there
93 unsigned int targets = 0;
94 // Is the first target a channel?
95 if (*parameters[0].c_str() == '#')
98 for (const char* c = parameters[0].c_str(); *c; c++)
100 if ((*c == ',') && (*(c+1) == '#'))
104 /* targets should now contain the number of channel targets the msg/notice was pointed at.
105 * If the msg/notice was a PM there should be no channel targets and 'targets' should = 0.
106 * We don't want to block PMs so...
109 return MOD_RES_PASSTHRU;
111 // Check that this message wasn't already sent within a few seconds.
112 BlockedMessage* m = blockamsg.get(user);
114 // If the message is identical and within the time.
115 // We check the target is *not* identical, that'd straying into the realms of flood control. Which isn't what we're doing...
117 // The number of target channels is equal to the number of channels the sender is on..a little suspicious.
118 // Check it's more than 1 too, or else users on one channel would have fun.
119 if ((m && (m->message == parameters[1]) && (!irc::equals(m->target, parameters[0])) && ForgetDelay && (m->sent >= ServerInstance->Time()-ForgetDelay)) || ((targets > 1) && (targets == user->chans.size())))
122 if (action == IBLOCK_KILLOPERS || action == IBLOCK_NOTICEOPERS)
123 ServerInstance->SNO->WriteToSnoMask('a', "%s had an /amsg or /ame denied", user->nick.c_str());
125 if (action == IBLOCK_KILL || action == IBLOCK_KILLOPERS)
126 ServerInstance->Users->QuitUser(user, "Attempted to global message (/amsg or /ame)");
127 else if (action == IBLOCK_NOTICE || action == IBLOCK_NOTICEOPERS)
128 user->WriteNotice("Global message (/amsg or /ame) denied");
135 // If there's already a BlockedMessage allocated, use it.
136 m->message = parameters[1];
137 m->target = parameters[0];
138 m->sent = ServerInstance->Time();
142 m = new BlockedMessage(parameters[1], parameters[0], ServerInstance->Time());
143 blockamsg.set(user, m);
146 return MOD_RES_PASSTHRU;
150 MODULE_INIT(ModuleBlockAmsg)