/* * InspIRCd -- Internet Relay Chat Daemon * * Copyright (C) 2009-2010 Daniel De Graaf * Copyright (C) 2006-2008 Robin Burchell * Copyright (C) 2007 Dennis Friis * Copyright (C) 2005-2007 Craig Edwards * Copyright (C) 2006 John Brooks * * 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" /* $ModDesc: Provides support for the /SILENCE command */ /* Improved drop-in replacement for the /SILENCE command * syntax: /SILENCE [+|-] as in * * example that blocks all except private messages * /SILENCE +*!*@* a * /SILENCE +*!*@* px * * example that blocks all invites except from channel services * /SILENCE +*!*@* i * /SILENCE +chanserv!services@chatters.net ix * * example that blocks some bad dude from private, notice and inviting you * /SILENCE +*!kiddie@lamerz.net pin * * TODO: possibly have add and remove check for existing host and only modify flags according to * what's been changed instead of having to remove first, then add if you want to change * an entry. */ // pair of hostmask and flags typedef std::pair silenceset; // deque list of pairs typedef std::deque silencelist; // intmasks for flags static int SILENCE_PRIVATE = 0x0001; /* p private messages */ static int SILENCE_CHANNEL = 0x0002; /* c channel messages */ static int SILENCE_INVITE = 0x0004; /* i invites */ static int SILENCE_NOTICE = 0x0008; /* n notices */ static int SILENCE_CNOTICE = 0x0010; /* t channel notices */ static int SILENCE_ALL = 0x0020; /* a all, (pcint) */ static int SILENCE_EXCLUDE = 0x0040; /* x exclude this pattern */ class CommandSVSSilence : public Command { public: CommandSVSSilence(Module* Creator) : Command(Creator,"SVSSILENCE", 2) { syntax = " {[+|-] }"; TRANSLATE4(TR_NICK, TR_TEXT, TR_TEXT, TR_END); /* we watch for a nick. not a UID. */ } CmdResult Handle (const std::vector& parameters, User *user) { /* * XXX: thought occurs to me * We may want to change the syntax of this command to * SVSSILENCE + - + * style command so services can modify lots of entries at once. * leaving it backwards compatible for now as it's late. -- w */ if (!ServerInstance->ULine(user->server)) return CMD_FAILURE; User *u = ServerInstance->FindNick(parameters[0]); if (!u) return CMD_FAILURE; if (IS_LOCAL(u)) { ServerInstance->Parser->CallHandler("SILENCE", std::vector(parameters.begin() + 1, parameters.end()), u); } return CMD_SUCCESS; } RouteDescriptor GetRouting(User* user, const std::vector& parameters) { User* target = ServerInstance->FindNick(parameters[0]); if (target) return ROUTE_OPT_UCAST(target->server); return ROUTE_LOCALONLY; } }; class CommandSilence : public Command { unsigned int& maxsilence; public: SimpleExtItem ext; CommandSilence(Module* Creator, unsigned int &max) : Command(Creator, "SILENCE", 0), maxsilence(max), ext("silence_list", Creator) { allow_empty_last_param = false; syntax = "{[+|-] }"; TRANSLATE3(TR_TEXT, TR_TEXT, TR_END); } CmdResult Handle (const std::vector& parameters, User *user) { if (!parameters.size()) { // no parameters, show the current silence list. silencelist* sl = ext.get(user); // if the user has a silence list associated with their user record, show it if (sl) { for (silencelist::const_iterator c = sl->begin(); c != sl->end(); c++) { std::string decomppattern = DecompPattern(c->second); user->WriteNumeric(271, "%s %s %s %s",user->nick.c_str(), user->nick.c_str(),c->first.c_str(), decomppattern.c_str()); } } user->WriteNumeric(272, "%s :End of Silence List",user->nick.c_str()); return CMD_SUCCESS; } else if (parameters.size() > 0) { // one or more parameters, add or delete entry from the list (only the first parameter is used) std::string mask = parameters[0].substr(1); char action = parameters[0][0]; // Default is private and notice so clients do not break int pattern = CompilePattern("pn"); // if pattern supplied, use it if (parameters.size() > 1) { pattern = CompilePattern(parameters[1].c_str()); } if (pattern == 0) { user->WriteServ("NOTICE %s :Bad SILENCE pattern",user->nick.c_str()); return CMD_INVALID; } if (!mask.length()) { // 'SILENCE +' or 'SILENCE -', assume *!*@* mask = "*!*@*"; } ModeParser::CleanMask(mask); if (action == '-') { std::string decomppattern = DecompPattern(pattern); // fetch their silence list silencelist* sl = ext.get(user); // does it contain any entries and does it exist? if (sl) { for (silencelist::iterator i = sl->begin(); i != sl->end(); i++) { // search through for the item irc::string listitem = i->first.c_str(); if (listitem == mask && i->second == pattern) { sl->erase(i); user->WriteNumeric(950, "%s %s :Removed %s %s from silence list",user->nick.c_str(), user->nick.c_str(), mask.c_str(), decomppattern.c_str()); if (!sl->size()) { ext.unset(user); } return CMD_SUCCESS; } } } user->WriteNumeric(952, "%s %s :%s %s does not exist on your silence list",user->nick.c_str(), user->nick.c_str(), mask.c_str(), decomppattern.c_str()); } else if (action == '+') { // fetch the user's current silence list silencelist* sl = ext.get(user); if (!sl) { sl = new silencelist; ext.set(user, sl); } if (sl->size() > maxsilence) { user->WriteNumeric(952, "%s %s :Your silence list is full",user->nick.c_str(), user->nick.c_str()); return CMD_FAILURE; } std::string decomppattern = DecompPattern(pattern); for (silencelist::iterator n = sl->begin(); n != sl->end(); n++) { irc::string listitem = n->first.c_str(); if (listitem == mask && n->second == pattern) { user->WriteNumeric(952, "%s %s :%s %s is already on your silence list",user->nick.c_str(), user->nick.c_str(), mask.c_str(), decomppattern.c_str()); return CMD_FAILURE; } } if (((pattern & SILENCE_EXCLUDE) > 0)) { sl->push_front(silenceset(mask,pattern)); } else { sl->push_back(silenceset(mask,pattern)); } user->WriteNumeric(951, "%s %s :Added %s %s to silence list",user->nick.c_str(), user->nick.c_str(), mask.c_str(), decomppattern.c_str()); return CMD_SUCCESS; } } return CMD_SUCCESS; } /* turn the nice human readable pattern into a mask */ int CompilePattern(const char* pattern) { int p = 0; for (const char* n = pattern; *n; n++) { switch (*n) { case 'p': p |= SILENCE_PRIVATE; break; case 'c': p |= SILENCE_CHANNEL; break; case 'i': p |= SILENCE_INVITE; break; case 'n': p |= SILENCE_NOTICE; break; case 't': p |= SILENCE_CNOTICE; break; case 'a': case '*': p |= SILENCE_ALL; break; case 'x': p |= SILENCE_EXCLUDE; break; default: break; } } return p; } /* turn the mask into a nice human readable format */ std::string DecompPattern (const int pattern) { std::string out; if (pattern & SILENCE_PRIVATE) out += ",privatemessages"; if (pattern & SILENCE_CHANNEL) out += ",channelmessages"; if (pattern & SILENCE_INVITE) out += ",invites"; if (pattern & SILENCE_NOTICE) out += ",privatenotices"; if (pattern & SILENCE_CNOTICE) out += ",channelnotices"; if (pattern & SILENCE_ALL) out = ",all"; if (pattern & SILENCE_EXCLUDE) out += ",exclude"; if (out.length()) return "<" + out.substr(1) + ">"; else return ""; } }; class ModuleSilence : public Module { unsigned int maxsilence; CommandSilence cmdsilence; CommandSVSSilence cmdsvssilence; public: ModuleSilence() : maxsilence(32), cmdsilence(this, maxsilence), cmdsvssilence(this) { } void init() { OnRehash(NULL); ServerInstance->Modules->AddService(cmdsilence); ServerInstance->Modules->AddService(cmdsvssilence); ServerInstance->Modules->AddService(cmdsilence.ext); Implementation eventlist[] = { I_OnRehash, I_On005Numeric, I_OnUserPreNotice, I_OnUserPreMessage, I_OnUserPreInvite }; ServerInstance->Modules->Attach(eventlist, this, sizeof(eventlist)/sizeof(Implementation)); } void OnRehash(User* user) { maxsilence = ServerInstance->Config->ConfValue("showwhois")->getInt("maxentries", 32); if (!maxsilence) maxsilence = 32; } void On005Numeric(std::string &output) { // we don't really have a limit... output = output + " ESILENCE SILENCE=" + ConvToStr(maxsilence); } void OnBuildExemptList(MessageType message_type, Channel* chan, User* sender, char status, CUList &exempt_list, const std::string &text) { int public_silence = (message_type == MSG_PRIVMSG ? SILENCE_CHANNEL : SILENCE_CNOTICE); const UserMembList *ulist = chan->GetUsers(); for (UserMembCIter i = ulist->begin(); i != ulist->end(); i++) { if (IS_LOCAL(i->first)) { if (MatchPattern(i->first, sender, public_silence) == MOD_RES_DENY) { exempt_list.insert(i->first); } } } } ModResult PreText(User* user,void* dest,int target_type, std::string &text, char status, CUList &exempt_list, int silence_type) { if (target_type == TYPE_USER && IS_LOCAL(((User*)dest))) { return MatchPattern((User*)dest, user, silence_type); } else if (target_type == TYPE_CHANNEL) { Channel* chan = (Channel*)dest; if (chan) { this->OnBuildExemptList((silence_type == SILENCE_PRIVATE ? MSG_PRIVMSG : MSG_NOTICE), chan, user, status, exempt_list, ""); } } return MOD_RES_PASSTHRU; } ModResult OnUserPreMessage(User* user,void* dest,int target_type, std::string &text, char status, CUList &exempt_list) { return PreText(user, dest, target_type, text, status, exempt_list, SILENCE_PRIVATE); } ModResult OnUserPreNotice(User* user,void* dest,int target_type, std::string &text, char status, CUList &exempt_list) { return PreText(user, dest, target_type, text, status, exempt_list, SILENCE_NOTICE); } ModResult OnUserPreInvite(User* source,User* dest,Channel* channel, time_t timeout) { return MatchPattern(dest, source, SILENCE_INVITE); } ModResult MatchPattern(User* dest, User* source, int pattern) { /* Server source */ if (!source || !dest) return MOD_RES_ALLOW; silencelist* sl = cmdsilence.ext.get(dest); if (sl) { for (silencelist::const_iterator c = sl->begin(); c != sl->end(); c++) { if (((((c->second & pattern) > 0)) || ((c->second & SILENCE_ALL) > 0)) && (InspIRCd::Match(source->GetFullHost(), c->first))) return (c->second & SILENCE_EXCLUDE) ? MOD_RES_PASSTHRU : MOD_RES_DENY; } } return MOD_RES_PASSTHRU; } ~ModuleSilence() { } Version GetVersion() { return Version("Provides support for the /SILENCE command", VF_OPTCOMMON | VF_VENDOR); } }; MODULE_INIT(ModuleSilence)