/* * InspIRCd -- Internet Relay Chat Daemon * * Copyright (C) 2009-2010 Daniel De Graaf * Copyright (C) 2007-2008 Robin Burchell * * 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" /** Handle /WHO. */ class CommandWho : public Command { bool CanView(Channel* chan, User* user); bool opt_viewopersonly; bool opt_showrealhost; bool opt_realname; bool opt_mode; bool opt_ident; bool opt_metadata; bool opt_port; bool opt_away; bool opt_local; bool opt_far; bool opt_time; ChanModeReference secretmode; ChanModeReference privatemode; UserModeReference invisiblemode; Membership* get_first_visible_channel(User* u) { for (UCListIter i = u->chans.begin(); i != u->chans.end(); ++i) { Membership* memb = *i; if (!memb->chan->IsModeSet(secretmode)) return memb; } return NULL; } public: /** Constructor for who. */ CommandWho(Module* parent) : Command(parent, "WHO", 1) , secretmode(parent, "secret") , privatemode(parent, "private") , invisiblemode(parent, "invisible") { syntax = "|||||0 [ohurmMiaplf]"; } void SendWhoLine(User* user, const std::vector& parms, const std::string& initial, Membership* memb, User* u, std::vector& whoresults); /** Handle command. * @param parameters The parameters to the command * @param user The user issuing the command * @return A value from CmdResult to indicate command success or failure. */ CmdResult Handle(const std::vector& parameters, User *user); bool whomatch(User* cuser, User* user, const char* matchtext); }; bool CommandWho::whomatch(User* cuser, User* user, const char* matchtext) { bool match = false; bool positive = false; if (user->registered != REG_ALL) return false; if (opt_local && !IS_LOCAL(user)) return false; else if (opt_far && IS_LOCAL(user)) return false; if (opt_mode) { for (const char* n = matchtext; *n; n++) { if (*n == '+') { positive = true; continue; } else if (*n == '-') { positive = false; continue; } if (user->IsModeSet(*n) != positive) return false; } return true; } else { /* * This was previously one awesome pile of ugly nested if, when really, it didn't need * to be, since only one condition was ever checked, a chained if works just fine. * -- w00t */ if (opt_metadata) { match = false; const Extensible::ExtensibleStore& list = user->GetExtList(); for(Extensible::ExtensibleStore::const_iterator i = list.begin(); i != list.end(); ++i) if (InspIRCd::Match(i->first->name, matchtext)) match = true; } else if (opt_realname) match = InspIRCd::Match(user->fullname, matchtext); else if (opt_showrealhost) match = InspIRCd::Match(user->host, matchtext, ascii_case_insensitive_map); else if (opt_ident) match = InspIRCd::Match(user->ident, matchtext, ascii_case_insensitive_map); else if (opt_port) { irc::portparser portrange(matchtext, false); long portno = -1; while ((portno = portrange.GetToken())) if (IS_LOCAL(user) && portno == IS_LOCAL(user)->GetServerPort()) { match = true; break; } } else if (opt_away) match = InspIRCd::Match(user->awaymsg, matchtext); else if (opt_time) { long seconds = InspIRCd::Duration(matchtext); // Okay, so time matching, we want all users connected `seconds' ago if (user->age >= ServerInstance->Time() - seconds) match = true; } /* * Once the conditionals have been checked, only check dhost/nick/server * if they didn't match this user -- and only match if we don't find a match. * * This should make things minutely faster, and again, less ugly. * -- w00t */ if (!match) match = InspIRCd::Match(user->dhost, matchtext, ascii_case_insensitive_map); if (!match) match = InspIRCd::Match(user->nick, matchtext); /* Don't allow server name matches if HideWhoisServer is enabled, unless the command user has the priv */ if (!match && (ServerInstance->Config->HideWhoisServer.empty() || cuser->HasPrivPermission("users/auspex"))) match = InspIRCd::Match(user->server->GetName(), matchtext); return match; } } bool CommandWho::CanView(Channel* chan, User* user) { if (!user || !chan) return false; /* Bug #383 - moved higher up the list, because if we are in the channel * we can see all its users */ if (chan->HasUser(user)) return true; /* Opers see all */ if (user->HasPrivPermission("users/auspex")) return true; /* Cant see inside a +s or a +p channel unless we are a member (see above) */ else if (!chan->IsModeSet(secretmode) && !chan->IsModeSet(privatemode)) return true; return false; } void CommandWho::SendWhoLine(User* user, const std::vector& parms, const std::string& initial, Membership* memb, User* u, std::vector& whoresults) { if (!memb) memb = get_first_visible_channel(u); std::string wholine = initial + (memb ? memb->chan->name : "*") + " " + u->ident + " " + (opt_showrealhost ? u->host : u->dhost) + " "; if (!ServerInstance->Config->HideWhoisServer.empty() && !user->HasPrivPermission("servers/auspex")) wholine.append(ServerInstance->Config->HideWhoisServer); else wholine.append(u->server->GetName()); wholine.append(" " + u->nick + " "); /* away? */ if (u->IsAway()) { wholine.append("G"); } else { wholine.append("H"); } /* oper? */ if (u->IsOper()) { wholine.push_back('*'); } if (memb) { char prefix = memb->GetPrefixChar(); if (prefix) wholine.push_back(prefix); } wholine.append(" :0 " + u->fullname); FOREACH_MOD(OnSendWhoLine, (user, parms, u, memb, wholine)); if (!wholine.empty()) whoresults.push_back(wholine); } CmdResult CommandWho::Handle (const std::vector& parameters, User *user) { /* * XXX - RFC says: * The passed to WHO is matched against users' host, server, real * name and nickname * Currently, we support WHO #chan, WHO nick, WHO 0, WHO *, and the addition of a 'o' flag, as per RFC. */ /* WHO options */ opt_viewopersonly = false; opt_showrealhost = false; opt_realname = false; opt_mode = false; opt_ident = false; opt_metadata = false; opt_port = false; opt_away = false; opt_local = false; opt_far = false; opt_time = false; std::vector whoresults; std::string initial = "352 " + user->nick + " "; /* Change '0' into '*' so the wildcard matcher can grok it */ std::string matchtext = ((parameters[0] == "0") ? "*" : parameters[0]); // WHO flags count as a wildcard bool usingwildcards = ((parameters.size() > 1) || (matchtext.find_first_of("*?.") != std::string::npos)); if (parameters.size() > 1) { for (std::string::const_iterator iter = parameters[1].begin(); iter != parameters[1].end(); ++iter) { switch (*iter) { case 'o': opt_viewopersonly = true; break; case 'h': if (user->HasPrivPermission("users/auspex")) opt_showrealhost = true; break; case 'r': opt_realname = true; break; case 'm': if (user->HasPrivPermission("users/auspex")) opt_mode = true; break; case 'M': if (user->HasPrivPermission("users/auspex")) opt_metadata = true; break; case 'i': opt_ident = true; break; case 'p': if (user->HasPrivPermission("users/auspex")) opt_port = true; break; case 'a': opt_away = true; break; case 'l': if (user->HasPrivPermission("users/auspex") || ServerInstance->Config->HideWhoisServer.empty()) opt_local = true; break; case 'f': if (user->HasPrivPermission("users/auspex") || ServerInstance->Config->HideWhoisServer.empty()) opt_far = true; break; case 't': opt_time = true; break; } } } /* who on a channel? */ Channel* ch = ServerInstance->FindChan(matchtext); if (ch) { if (CanView(ch,user)) { bool inside = ch->HasUser(user); /* who on a channel. */ const UserMembList& cu = ch->GetUsers(); for (UserMembCIter i = cu.begin(); i != cu.end(); ++i) { /* None of this applies if we WHO ourselves */ if (user != i->first) { /* opers only, please */ if (opt_viewopersonly && !i->first->IsOper()) continue; /* If we're not inside the channel, hide +i users */ if (i->first->IsModeSet(invisiblemode) && !inside && !user->HasPrivPermission("users/auspex")) continue; } SendWhoLine(user, parameters, initial, i->second, i->first, whoresults); } } } else { /* Match against wildcard of nick, server or host */ if (opt_viewopersonly) { /* Showing only opers */ const UserManager::OperList& opers = ServerInstance->Users->all_opers; for (UserManager::OperList::const_iterator i = opers.begin(); i != opers.end(); ++i) { User* oper = *i; if (whomatch(user, oper, matchtext.c_str())) { if (!user->SharesChannelWith(oper)) { if (usingwildcards && (oper->IsModeSet(invisiblemode)) && (!user->HasPrivPermission("users/auspex"))) continue; } SendWhoLine(user, parameters, initial, NULL, oper, whoresults); } } } else { const user_hash& users = ServerInstance->Users->GetUsers(); for (user_hash::const_iterator i = users.begin(); i != users.end(); ++i) { if (whomatch(user, i->second, matchtext.c_str())) { if (!user->SharesChannelWith(i->second)) { if (usingwildcards && (i->second->IsModeSet(invisiblemode)) && (!user->HasPrivPermission("users/auspex"))) continue; } SendWhoLine(user, parameters, initial, NULL, i->second, whoresults); } } } } /* Send the results out */ for (std::vector::const_iterator n = whoresults.begin(); n != whoresults.end(); n++) user->WriteServ(*n); user->WriteNumeric(RPL_ENDOFWHO, "%s :End of /WHO list.", *parameters[0].c_str() ? parameters[0].c_str() : "*"); // Penalize the user a bit for large queries // (add one unit of penalty per 200 results) if (IS_LOCAL(user)) IS_LOCAL(user)->CommandFloodPenalty += whoresults.size() * 5; return CMD_SUCCESS; } COMMAND_INIT(CommandWho)