X-Git-Url: https://git.netwichtig.de/gitweb/?a=blobdiff_plain;ds=sidebyside;f=src%2Fmodules%2Fm_alias.cpp;h=df7add05cc93112da3c05f014b6a8c9095e3359c;hb=56b4dc61e49e4218544f51ac9a25ab3ece60a782;hp=039aeed92c5a0fb3a6979ff727c9e064c4476904;hpb=bab14f0dd2345c9d7dcbc47c918563709e1ac094;p=user%2Fhenk%2Fcode%2Finspircd.git diff --git a/src/modules/m_alias.cpp b/src/modules/m_alias.cpp index 039aeed92..df7add05c 100644 --- a/src/modules/m_alias.cpp +++ b/src/modules/m_alias.cpp @@ -1 +1,402 @@ -/* +------------------------------------+ * | 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 "wildcard.h" /* $ModDesc: Provides aliases of commands. */ /** An alias definition */ class Alias : public classbase { public: /** The text of the alias command */ irc::string text; /** Text to replace with */ std::string replace_with; /** Nickname required to perform alias */ std::string requires; /** Alias requires ulined server */ bool uline; /** Requires oper? */ bool operonly; /* is case sensitive params */ bool case_sensitive; /** Format that must be matched for use */ std::string format; }; class ModuleAlias : public Module { private: /** We cant use a map, there may be multiple aliases with the same name */ std::vector Aliases; std::map AliasMap; std::vector pars; virtual void ReadAliases() { ConfigReader MyConf(ServerInstance); Aliases.clear(); AliasMap.clear(); for (int i = 0; i < MyConf.Enumerate("alias"); i++) { Alias a; std::string txt; txt = MyConf.ReadValue("alias", "text", i); a.text = txt.c_str(); a.replace_with = MyConf.ReadValue("alias", "replace", i, true); a.requires = MyConf.ReadValue("alias", "requires", i); a.uline = MyConf.ReadFlag("alias", "uline", i); a.operonly = MyConf.ReadFlag("alias", "operonly", i); a.format = MyConf.ReadValue("alias", "format", i); a.case_sensitive = MyConf.ReadFlag("alias", "matchcase", i); Aliases.push_back(a); AliasMap[txt] = 1; } } public: ModuleAlias(InspIRCd* Me) : Module(Me) { ReadAliases(); pars.resize(127); } void Implements(char* List) { List[I_OnPreCommand] = List[I_OnRehash] = 1; } virtual ~ModuleAlias() { } virtual Version GetVersion() { return Version(1,1,0,1,VF_VENDOR,API_VERSION); } std::string GetVar(std::string varname, const std::string &original_line) { irc::spacesepstream ss(original_line); varname.erase(varname.begin()); int index = *(varname.begin()) - 48; varname.erase(varname.begin()); bool everything_after = (varname == "-"); std::string word; for (int j = 0; j < index; j++) word = ss.GetToken(); if (everything_after) { std::string more = "*"; while ((more = ss.GetToken()) != "") { word.append(" "); word.append(more); } } return word; } void SearchAndReplace(std::string& newline, const std::string &find, const std::string &replace) { std::string::size_type x = newline.find(find); while (x != std::string::npos) { newline.erase(x, find.length()); newline.insert(x, replace); x = newline.find(find); } } virtual int OnPreCommand(const std::string &command, const char** parameters, int pcnt, userrec *user, bool validated, const std::string &original_line) { userrec *u = NULL; /* If theyre not registered yet, we dont want * to know. */ if (user->registered != REG_ALL) return 0; /* We dont have any commands looking like this, dont bother with the loop */ if (AliasMap.find(command) == AliasMap.end()) return 0; irc::string c = command.c_str(); /* The parameters for the command in their original form, with the command stripped off */ std::string compare = original_line.substr(command.length()); while (*(compare.c_str()) == ' ') compare.erase(compare.begin()); std::string safe(original_line); /* Escape out any $ symbols in the user provided text */ SearchAndReplace(safe, "$", "\r"); for (unsigned int i = 0; i < Aliases.size(); i++) { if (Aliases[i].text == c) { /* Does it match the pattern? */ if (!Aliases[i].format.empty()) { if (!match(Aliases[i].case_sensitive, compare.c_str(), Aliases[i].format.c_str())) continue; } if ((Aliases[i].operonly) && (!IS_OPER(user))) return 0; if (!Aliases[i].requires.empty()) { u = ServerInstance->FindNick(Aliases[i].requires); if (!u) { user->WriteServ("401 "+std::string(user->nick)+" "+Aliases[i].requires+" :is currently unavailable. Please try again later."); return 1; } } if ((u != NULL) && (!Aliases[i].requires.empty()) && (Aliases[i].uline)) { if (!ServerInstance->ULine(u->server)) { ServerInstance->WriteOpers("*** NOTICE -- Service "+Aliases[i].requires+" required by alias "+std::string(Aliases[i].text.c_str())+" is not on a u-lined server, possibly underhanded antics detected!"); user->WriteServ("401 "+std::string(user->nick)+" "+Aliases[i].requires+" :is an imposter! Please inform an IRC operator as soon as possible."); return 1; } } /* Now, search and replace in a copy of the original_line, replacing $1 through $9 and $1- etc */ std::string::size_type crlf = Aliases[i].replace_with.find('\n'); if (crlf == std::string::npos) { DoCommand(Aliases[i].replace_with, user, safe); return 1; } else { irc::sepstream commands(Aliases[i].replace_with, '\n'); std::string command = "*"; while ((command = commands.GetToken()) != "") { DoCommand(command, user, safe); } return 1; } } } return 0; } void DoCommand(std::string newline, userrec* user, const std::string &original_line) { for (int v = 1; v < 10; v++) { std::string var = "$"; var.append(ConvToStr(v)); var.append("-"); std::string::size_type x = newline.find(var); while (x != std::string::npos) { newline.erase(x, var.length()); newline.insert(x, GetVar(var, original_line)); x = newline.find(var); } var = "$"; var.append(ConvToStr(v)); x = newline.find(var); while (x != std::string::npos) { newline.erase(x, var.length()); newline.insert(x, GetVar(var, original_line)); x = newline.find(var); } } /* Special variables */ SearchAndReplace(newline, "$nick", user->nick); SearchAndReplace(newline, "$ident", user->ident); SearchAndReplace(newline, "$host", user->host); SearchAndReplace(newline, "$vhost", user->dhost); /* Unescape any variable names in the user text before sending */ SearchAndReplace(newline, "\r", "$"); irc::tokenstream ss(newline); const char* parv[127]; int x = 0; while (ss.GetToken(pars[x])) { parv[x] = pars[x].c_str(); x++; } ServerInstance->Parser->CallHandler(parv[0], &parv[1], x-1, user); } virtual void OnRehash(userrec* user, const std::string ¶meter) { ReadAliases(); } }; MODULE_INIT(ModuleAlias) \ No newline at end of file +/* + * InspIRCd -- Internet Relay Chat Daemon + * + * Copyright (C) 2018-2019 linuxdaemon + * Copyright (C) 2013-2016, 2018 Attila Molnar + * Copyright (C) 2013, 2015-2019 Sadie Powell + * Copyright (C) 2012, 2019 Robby + * Copyright (C) 2009-2010 Daniel De Graaf + * Copyright (C) 2009 Matt Smith + * Copyright (C) 2008-2009 Robin Burchell + * Copyright (C) 2007-2008 Dennis Friis + * Copyright (C) 2006-2009 Craig Edwards + * + * 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" + +/** An alias definition + */ +class Alias +{ + public: + /** The text of the alias command */ + std::string AliasedCommand; + + /** Text to replace with */ + std::string ReplaceFormat; + + /** Nickname required to perform alias */ + std::string RequiredNick; + + /** Alias requires ulined server */ + bool ULineOnly; + + /** Requires oper? */ + bool OperOnly; + + /* whether or not it may be executed via fantasy (default OFF) */ + bool ChannelCommand; + + /* whether or not it may be executed via /command (default ON) */ + bool UserCommand; + + /** Format that must be matched for use */ + std::string format; + + /** Strip color codes before match? */ + bool StripColor; +}; + +class ModuleAlias : public Module +{ + std::string fprefix; + + /* We cant use a map, there may be multiple aliases with the same name. + * We can, however, use a fancy invention: the multimap. Maps a key to one or more values. + * -- w00t + */ + typedef insp::flat_multimap AliasMap; + + AliasMap Aliases; + + /* whether or not +B users are allowed to use fantasy commands */ + bool AllowBots; + UserModeReference botmode; + + // Whether we are actively executing an alias. + bool active; + + public: + void ReadConfig(ConfigStatus& status) CXX11_OVERRIDE + { + AliasMap newAliases; + ConfigTagList tags = ServerInstance->Config->ConfTags("alias"); + for(ConfigIter i = tags.first; i != tags.second; ++i) + { + ConfigTag* tag = i->second; + Alias a; + a.AliasedCommand = tag->getString("text"); + if (a.AliasedCommand.empty()) + throw ModuleException(" is empty! at " + tag->getTagLocation()); + + tag->readString("replace", a.ReplaceFormat, true); + if (a.ReplaceFormat.empty()) + throw ModuleException(" is empty! at " + tag->getTagLocation()); + + a.RequiredNick = tag->getString("requires"); + a.ULineOnly = tag->getBool("uline"); + a.ChannelCommand = tag->getBool("channelcommand", false); + a.UserCommand = tag->getBool("usercommand", true); + a.OperOnly = tag->getBool("operonly"); + a.format = tag->getString("format"); + a.StripColor = tag->getBool("stripcolor"); + + std::transform(a.AliasedCommand.begin(), a.AliasedCommand.end(), a.AliasedCommand.begin(), ::toupper); + newAliases.insert(std::make_pair(a.AliasedCommand, a)); + } + + ConfigTag* fantasy = ServerInstance->Config->ConfValue("fantasy"); + AllowBots = fantasy->getBool("allowbots", false); + fprefix = fantasy->getString("prefix", "!", 1, ServerInstance->Config->Limits.MaxLine); + Aliases.swap(newAliases); + } + + ModuleAlias() + : botmode(this, "bot") + , active(false) + { + } + + Version GetVersion() CXX11_OVERRIDE + { + return Version("Allows the server administrator to define custom channel commands (e.g. !kick) and server commands (e.g. /OPERSERV).", VF_VENDOR); + } + + std::string GetVar(std::string varname, const std::string &original_line) + { + irc::spacesepstream ss(original_line); + varname.erase(varname.begin()); + int index = *(varname.begin()) - 48; + varname.erase(varname.begin()); + bool everything_after = (varname == "-"); + std::string word; + + for (int j = 0; j < index; j++) + ss.GetToken(word); + + if (everything_after) + { + std::string more; + while (ss.GetToken(more)) + { + word.append(" "); + word.append(more); + } + } + + return word; + } + + std::string CreateRFCMessage(const std::string& command, CommandBase::Params& parameters) + { + std::string message(command); + for (CommandBase::Params::const_iterator iter = parameters.begin(); iter != parameters.end();) + { + const std::string& parameter = *iter++; + message.push_back(' '); + if (iter == parameters.end() && (parameter.empty() || parameter.find(' ') != std::string::npos)) + message.push_back(':'); + message.append(parameter); + } + return message; + } + + ModResult OnPreCommand(std::string& command, CommandBase::Params& parameters, LocalUser* user, bool validated) CXX11_OVERRIDE + { + /* If they're not registered yet, we dont want + * to know. + */ + if (user->registered != REG_ALL) + return MOD_RES_PASSTHRU; + + /* We dont have any commands looking like this? Stop processing. */ + std::pair iters = Aliases.equal_range(command); + if (iters.first == iters.second) + return MOD_RES_PASSTHRU; + + /* The parameters for the command in their original form, with the command stripped off */ + std::string original_line = CreateRFCMessage(command, parameters); + std::string compare(original_line, command.length()); + while (*(compare.c_str()) == ' ') + compare.erase(compare.begin()); + + for (AliasMap::iterator i = iters.first; i != iters.second; ++i) + { + if (i->second.UserCommand) + { + if (DoAlias(user, NULL, &(i->second), compare, original_line)) + { + return MOD_RES_DENY; + } + } + } + + // If we made it here, no aliases actually matched. + return MOD_RES_PASSTHRU; + } + + ModResult OnUserPreMessage(User* user, const MessageTarget& target, MessageDetails& details) CXX11_OVERRIDE + { + // Don't echo anything which is caused by an alias. + if (active) + details.echo = false; + + return MOD_RES_PASSTHRU; + } + + void OnUserPostMessage(User* user, const MessageTarget& target, const MessageDetails& details) CXX11_OVERRIDE + { + if ((target.type != MessageTarget::TYPE_CHANNEL) || (details.type != MSG_PRIVMSG)) + { + return; + } + + // fcommands are only for local users. Spanningtree will send them back out as their original cmd. + if (!IS_LOCAL(user)) + { + return; + } + + /* Stop here if the user is +B and allowbot is set to no. */ + if (!AllowBots && user->IsModeSet(botmode)) + { + return; + } + + Channel *c = target.Get(); + std::string scommand; + + // text is like "!moo cows bite me", we want "!moo" first + irc::spacesepstream ss(details.text); + ss.GetToken(scommand); + + if (scommand.size() <= fprefix.size()) + { + return; // wtfbbq + } + + // we don't want to touch non-fantasy stuff + if (scommand.compare(0, fprefix.size(), fprefix) != 0) + { + return; + } + + // nor do we give a shit about the prefix + scommand.erase(0, fprefix.size()); + + std::pair iters = Aliases.equal_range(scommand); + if (iters.first == iters.second) + return; + + /* The parameters for the command in their original form, with the command stripped off */ + std::string compare(details.text, scommand.length() + fprefix.size()); + while (*(compare.c_str()) == ' ') + compare.erase(compare.begin()); + + for (AliasMap::iterator i = iters.first; i != iters.second; ++i) + { + if (i->second.ChannelCommand) + { + // We use substr here to remove the fantasy prefix + if (DoAlias(user, c, &(i->second), compare, details.text.substr(fprefix.size()))) + return; + } + } + } + + + int DoAlias(User *user, Channel *c, Alias *a, const std::string& compare, const std::string& safe) + { + std::string stripped(compare); + if (a->StripColor) + InspIRCd::StripColor(stripped); + + /* Does it match the pattern? */ + if (!a->format.empty()) + { + if (!InspIRCd::Match(stripped, a->format)) + return 0; + } + + if ((a->OperOnly) && (!user->IsOper())) + return 0; + + if (!a->RequiredNick.empty()) + { + User* u = ServerInstance->FindNickOnly(a->RequiredNick); + if (!u) + { + user->WriteNumeric(ERR_NOSUCHNICK, a->RequiredNick, "is currently unavailable. Please try again later."); + return 1; + } + + if ((a->ULineOnly) && (!u->server->IsULine())) + { + ServerInstance->SNO->WriteToSnoMask('a', "NOTICE -- Service "+a->RequiredNick+" required by alias "+a->AliasedCommand+" is not on a U-lined server, possibly underhanded antics detected!"); + user->WriteNumeric(ERR_NOSUCHNICK, a->RequiredNick, "is not a network service! Please inform a server operator as soon as possible."); + return 1; + } + } + + /* Now, search and replace in a copy of the original_line, replacing $1 through $9 and $1- etc */ + + std::string::size_type crlf = a->ReplaceFormat.find('\n'); + + if (crlf == std::string::npos) + { + DoCommand(a->ReplaceFormat, user, c, safe, a); + return 1; + } + else + { + irc::sepstream commands(a->ReplaceFormat, '\n'); + std::string scommand; + while (commands.GetToken(scommand)) + { + DoCommand(scommand, user, c, safe, a); + } + return 1; + } + } + + void DoCommand(const std::string& newline, User* user, Channel *chan, const std::string &original_line, Alias* a) + { + std::string result; + result.reserve(newline.length()); + for (unsigned int i = 0; i < newline.length(); i++) + { + char c = newline[i]; + if ((c == '$') && (i + 1 < newline.length())) + { + if (isdigit(newline[i+1])) + { + size_t len = ((i + 2 < newline.length()) && (newline[i+2] == '-')) ? 3 : 2; + std::string var = newline.substr(i, len); + result.append(GetVar(var, original_line)); + i += len - 1; + } + else if (!newline.compare(i, 5, "$nick", 5)) + { + result.append(user->nick); + i += 4; + } + else if (!newline.compare(i, 5, "$host", 5)) + { + result.append(user->GetRealHost()); + i += 4; + } + else if (!newline.compare(i, 5, "$chan", 5)) + { + if (chan) + result.append(chan->name); + i += 4; + } + else if (!newline.compare(i, 6, "$ident", 6)) + { + result.append(user->ident); + i += 5; + } + else if (!newline.compare(i, 6, "$vhost", 6)) + { + result.append(user->GetDisplayedHost()); + i += 5; + } + else if (!newline.compare(i, 12, "$requirement", 12)) + { + result.append(a->RequiredNick); + i += 11; + } + else + result.push_back(c); + } + else + result.push_back(c); + } + + irc::tokenstream ss(result); + CommandBase::Params pars; + std::string command, token; + + ss.GetMiddle(command); + while (ss.GetTrailing(token)) + { + pars.push_back(token); + } + + active = true; + ServerInstance->Parser.CallHandler(command, pars, user); + active = false; + } + + void Prioritize() CXX11_OVERRIDE + { + // Prioritise after spanningtree so that channel aliases show the alias before the effects. + Module* linkmod = ServerInstance->Modules->Find("m_spanningtree.so"); + ServerInstance->Modules->SetPriority(this, I_OnUserPostMessage, PRIORITY_AFTER, linkmod); + } +}; + +MODULE_INIT(ModuleAlias)