2 * InspIRCd -- Internet Relay Chat Daemon
4 * Copyright (C) 2009 Daniel De Graaf <danieldg@inspircd.org>
5 * Copyright (C) 2005, 2009 Robin Burchell <robin+git@viroteck.net>
6 * Copyright (C) 2004-2007, 2009 Craig Edwards <craigedwards@brainbox.cc>
7 * Copyright (C) 2007 Dennis Friis <peavey@inspircd.org>
9 * This file is part of InspIRCd. InspIRCd is free software: you can
10 * redistribute it and/or modify it under the terms of the GNU General Public
11 * License as published by the Free Software Foundation, version 2.
13 * This program is distributed in the hope that it will be useful, but WITHOUT
14 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS
15 * FOR A PARTICULAR PURPOSE. See the GNU General Public License for more
18 * You should have received a copy of the GNU General Public License
19 * along with this program. If not, see <http://www.gnu.org/licenses/>.
25 /** An alias definition
30 /** The text of the alias command */
31 std::string AliasedCommand;
33 /** Text to replace with */
34 std::string ReplaceFormat;
36 /** Nickname required to perform alias */
37 std::string RequiredNick;
39 /** Alias requires ulined server */
45 /* whether or not it may be executed via fantasy (default OFF) */
48 /* whether or not it may be executed via /command (default ON) */
51 /** Format that must be matched for use */
55 class ModuleAlias : public Module
59 /* We cant use a map, there may be multiple aliases with the same name.
60 * We can, however, use a fancy invention: the multimap. Maps a key to one or more values.
63 typedef insp::flat_multimap<std::string, Alias, irc::insensitive_swo> AliasMap;
67 /* whether or not +B users are allowed to use fantasy commands */
69 UserModeReference botmode;
71 // Whether we are actively executing an alias.
75 void ReadConfig(ConfigStatus& status) CXX11_OVERRIDE
78 ConfigTagList tags = ServerInstance->Config->ConfTags("alias");
79 for(ConfigIter i = tags.first; i != tags.second; ++i)
81 ConfigTag* tag = i->second;
83 a.AliasedCommand = tag->getString("text");
84 if (a.AliasedCommand.empty())
85 throw ModuleException("<alias:text> is empty! at " + tag->getTagLocation());
87 tag->readString("replace", a.ReplaceFormat, true);
88 if (a.ReplaceFormat.empty())
89 throw ModuleException("<alias:replace> is empty! at " + tag->getTagLocation());
91 a.RequiredNick = tag->getString("requires");
92 a.ULineOnly = tag->getBool("uline");
93 a.ChannelCommand = tag->getBool("channelcommand", false);
94 a.UserCommand = tag->getBool("usercommand", true);
95 a.OperOnly = tag->getBool("operonly");
96 a.format = tag->getString("format");
98 std::transform(a.AliasedCommand.begin(), a.AliasedCommand.end(), a.AliasedCommand.begin(), ::toupper);
99 newAliases.insert(std::make_pair(a.AliasedCommand, a));
102 ConfigTag* fantasy = ServerInstance->Config->ConfValue("fantasy");
103 AllowBots = fantasy->getBool("allowbots", false);
104 fprefix = fantasy->getString("prefix", "!", 1, ServerInstance->Config->Limits.MaxLine);
105 Aliases.swap(newAliases);
109 : botmode(this, "bot")
113 Version GetVersion() CXX11_OVERRIDE
115 return Version("Provides aliases of commands.", VF_VENDOR);
118 std::string GetVar(std::string varname, const std::string &original_line)
120 irc::spacesepstream ss(original_line);
121 varname.erase(varname.begin());
122 int index = *(varname.begin()) - 48;
123 varname.erase(varname.begin());
124 bool everything_after = (varname == "-");
127 for (int j = 0; j < index; j++)
130 if (everything_after)
133 while (ss.GetToken(more))
143 std::string CreateRFCMessage(const std::string& command, CommandBase::Params& parameters)
145 std::string message(command);
146 for (CommandBase::Params::const_iterator iter = parameters.begin(); iter != parameters.end();)
148 const std::string& parameter = *iter++;
149 message.push_back(' ');
150 if (iter == parameters.end() && (parameter.empty() || parameter.find(' ') != std::string::npos))
151 message.push_back(':');
152 message.append(parameter);
157 ModResult OnPreCommand(std::string& command, CommandBase::Params& parameters, LocalUser* user, bool validated) CXX11_OVERRIDE
159 /* If theyre not registered yet, we dont want
162 if (user->registered != REG_ALL)
163 return MOD_RES_PASSTHRU;
165 /* We dont have any commands looking like this? Stop processing. */
166 std::pair<AliasMap::iterator, AliasMap::iterator> iters = Aliases.equal_range(command);
167 if (iters.first == iters.second)
168 return MOD_RES_PASSTHRU;
170 /* The parameters for the command in their original form, with the command stripped off */
171 std::string original_line = CreateRFCMessage(command, parameters);
172 std::string compare(original_line, command.length());
173 while (*(compare.c_str()) == ' ')
174 compare.erase(compare.begin());
176 for (AliasMap::iterator i = iters.first; i != iters.second; ++i)
178 if (i->second.UserCommand)
180 if (DoAlias(user, NULL, &(i->second), compare, original_line))
187 // If we made it here, no aliases actually matched.
188 return MOD_RES_PASSTHRU;
191 ModResult OnUserPreMessage(User* user, const MessageTarget& target, MessageDetails& details) CXX11_OVERRIDE
193 // Don't echo anything which is caused by an alias.
195 details.echo = false;
197 return MOD_RES_PASSTHRU;
200 void OnUserPostMessage(User* user, const MessageTarget& target, const MessageDetails& details) CXX11_OVERRIDE
202 if ((target.type != MessageTarget::TYPE_CHANNEL) || (details.type != MSG_PRIVMSG))
207 // fcommands are only for local users. Spanningtree will send them back out as their original cmd.
213 /* Stop here if the user is +B and allowbot is set to no. */
214 if (!AllowBots && user->IsModeSet(botmode))
219 Channel *c = target.Get<Channel>();
220 std::string scommand;
222 // text is like "!moo cows bite me", we want "!moo" first
223 irc::spacesepstream ss(details.text);
224 ss.GetToken(scommand);
226 if (scommand.size() <= fprefix.size())
231 // we don't want to touch non-fantasy stuff
232 if (scommand.compare(0, fprefix.size(), fprefix) != 0)
237 // nor do we give a shit about the prefix
238 scommand.erase(0, fprefix.size());
240 std::pair<AliasMap::iterator, AliasMap::iterator> iters = Aliases.equal_range(scommand);
241 if (iters.first == iters.second)
244 /* The parameters for the command in their original form, with the command stripped off */
245 std::string compare(details.text, scommand.length() + fprefix.size());
246 while (*(compare.c_str()) == ' ')
247 compare.erase(compare.begin());
249 for (AliasMap::iterator i = iters.first; i != iters.second; ++i)
251 if (i->second.ChannelCommand)
253 // We use substr here to remove the fantasy prefix
254 if (DoAlias(user, c, &(i->second), compare, details.text.substr(fprefix.size())))
261 int DoAlias(User *user, Channel *c, Alias *a, const std::string& compare, const std::string& safe)
263 /* Does it match the pattern? */
264 if (!a->format.empty())
266 if (!InspIRCd::Match(compare, a->format))
270 if ((a->OperOnly) && (!user->IsOper()))
273 if (!a->RequiredNick.empty())
275 User* u = ServerInstance->FindNick(a->RequiredNick);
278 user->WriteNumeric(ERR_NOSUCHNICK, a->RequiredNick, "is currently unavailable. Please try again later.");
282 if ((a->ULineOnly) && (!u->server->IsULine()))
284 ServerInstance->SNO->WriteToSnoMask('a', "NOTICE -- Service "+a->RequiredNick+" required by alias "+a->AliasedCommand+" is not on a u-lined server, possibly underhanded antics detected!");
285 user->WriteNumeric(ERR_NOSUCHNICK, a->RequiredNick, "is an imposter! Please inform an IRC operator as soon as possible.");
290 /* Now, search and replace in a copy of the original_line, replacing $1 through $9 and $1- etc */
292 std::string::size_type crlf = a->ReplaceFormat.find('\n');
294 if (crlf == std::string::npos)
296 DoCommand(a->ReplaceFormat, user, c, safe, a);
301 irc::sepstream commands(a->ReplaceFormat, '\n');
302 std::string scommand;
303 while (commands.GetToken(scommand))
305 DoCommand(scommand, user, c, safe, a);
311 void DoCommand(const std::string& newline, User* user, Channel *chan, const std::string &original_line, Alias* a)
314 result.reserve(newline.length());
315 for (unsigned int i = 0; i < newline.length(); i++)
318 if ((c == '$') && (i + 1 < newline.length()))
320 if (isdigit(newline[i+1]))
322 size_t len = ((i + 2 < newline.length()) && (newline[i+2] == '-')) ? 3 : 2;
323 std::string var = newline.substr(i, len);
324 result.append(GetVar(var, original_line));
327 else if (!newline.compare(i, 5, "$nick", 5))
329 result.append(user->nick);
332 else if (!newline.compare(i, 5, "$host", 5))
334 result.append(user->GetRealHost());
337 else if (!newline.compare(i, 5, "$chan", 5))
340 result.append(chan->name);
343 else if (!newline.compare(i, 6, "$ident", 6))
345 result.append(user->ident);
348 else if (!newline.compare(i, 6, "$vhost", 6))
350 result.append(user->GetDisplayedHost());
353 else if (!newline.compare(i, 12, "$requirement", 12))
355 result.append(a->RequiredNick);
365 irc::tokenstream ss(result);
366 CommandBase::Params pars;
367 std::string command, token;
369 ss.GetMiddle(command);
370 while (ss.GetTrailing(token))
372 pars.push_back(token);
376 ServerInstance->Parser.CallHandler(command, pars, user);
380 void Prioritize() CXX11_OVERRIDE
382 // Prioritise after spanningtree so that channel aliases show the alias before the effects.
383 Module* linkmod = ServerInstance->Modules->Find("m_spanningtree.so");
384 ServerInstance->Modules->SetPriority(this, I_OnUserPostMessage, PRIORITY_AFTER, linkmod);
388 MODULE_INIT(ModuleAlias)