/* +------------------------------------+ * | Inspire Internet Relay Chat Daemon | * +------------------------------------+ * * InspIRCd: (C) 2002-2009 InspIRCd Development Team * See: http://wiki.inspircd.org/Credits * * This program is free but copyrighted software; see * the file COPYING for details. * * --------------------------------------------------- */ #include "inspircd.h" /** Handle /WHO. These command handlers can be reloaded by the core, * and handle basic RFC1459 commands. Commands within modules work * the same way, however, they can be fully unloaded, where these * may not. */ class CommandWho : public Command { bool CanView(Channel* chan, User* user); bool opt_viewopersonly; bool opt_showrealhost; bool opt_unlimit; 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; public: /** Constructor for who. */ CommandWho ( Module* parent) : Command(parent,"WHO", 1) { Penalty = 2; syntax = "|||||0 [ohurmMiaplf]"; } void SendWhoLine(User* user, const std::string &initial, Channel* ch, User* u, std::vector &whoresults); /** Handle command. * @param parameters The parameters to the comamnd * @param pcnt The number of parameters passed to teh 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); }; static const std::string star = "*"; static const std::string& get_first_visible_channel(User *u) { UCListIter i = u->chans.begin(); while (i != u->chans.end()) { Channel* c = *i++; if (!c->IsModeSet('s')) return c->name; } return star; } 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 = user->GetExtList().find(matchtext) != user->GetExtList().end(); 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 (portno == user->GetServerPort()) { match = true; break; } } else if (opt_away) match = InspIRCd::Match(user->awaymsg, matchtext); else if (opt_time) { long seconds = ServerInstance->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, 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('s') && !chan->IsModeSet('p')) return true; return false; } void CommandWho::SendWhoLine(User* user, const std::string &initial, Channel* ch, User* u, std::vector &whoresults) { const std::string& lcn = get_first_visible_channel(u); Channel* chlast = ServerInstance->FindChan(lcn); std::string wholine = initial + (ch ? ch->name : lcn) + " " + u->ident + " " + (opt_showrealhost ? u->host : u->dhost) + " " + ((!ServerInstance->Config->HideWhoisServer.empty() && !user->HasPrivPermission("servers/auspex")) ? ServerInstance->Config->HideWhoisServer : u->server) + " " + u->nick + " "; /* away? */ if (IS_AWAY(u)) { wholine.append("G"); } else { wholine.append("H"); } /* oper? */ if (IS_OPER(u)) { wholine.append("*"); } wholine = wholine + (ch ? ch->GetPrefixChar(u) : (chlast ? chlast->GetPrefixChar(u) : "")) + " :0 " + u->fullname; FOREACH_MOD(I_OnSendWhoLine, OnSendWhoLine(user, u, ch, 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_unlimit = 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; Channel *ch = NULL; std::vector whoresults; std::string initial = "352 " + std::string(user->nick) + " "; char matchtext[MAXBUF]; bool usingwildcards = false; /* Change '0' into '*' so the wildcard matcher can grok it */ if (parameters[0] == "0") strlcpy(matchtext, "*", MAXBUF); else strlcpy(matchtext, parameters[0].c_str(), MAXBUF); for (const char* check = matchtext; *check; check++) { if (*check == '*' || *check == '?') { usingwildcards = true; break; } } if (parameters.size() > 1) { /* Fix for bug #444, WHO flags count as a wildcard */ usingwildcards = true; 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 'u': if (user->HasPrivPermission("users/auspex")) opt_unlimit = 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? */ 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 && !IS_OPER(i->first)) continue; /* If we're not inside the channel, hide +i users */ if (i->first->IsModeSet('i') && !inside && !user->HasPrivPermission("users/auspex")) continue; } SendWhoLine(user, initial, ch, i->first, whoresults); } } } else { /* Match against wildcard of nick, server or host */ if (opt_viewopersonly) { /* Showing only opers */ for (std::list::iterator i = ServerInstance->Users->all_opers.begin(); i != ServerInstance->Users->all_opers.end(); i++) { User* oper = *i; if (whomatch(user, oper, matchtext)) { if (!user->SharesChannelWith(oper)) { if (usingwildcards && (!oper->IsModeSet('i')) && (!user->HasPrivPermission("users/auspex"))) continue; } SendWhoLine(user, initial, NULL, oper, whoresults); } } } else { for (user_hash::iterator i = ServerInstance->Users->clientlist->begin(); i != ServerInstance->Users->clientlist->end(); i++) { if (whomatch(user, i->second, matchtext)) { if (!user->SharesChannelWith(i->second)) { if (usingwildcards && (i->second->IsModeSet('i')) && (!user->HasPrivPermission("users/auspex"))) continue; } SendWhoLine(user, initial, NULL, i->second, whoresults); } } } } /* Send the results out */ if ((ServerInstance->Config->MaxWhoResults && (whoresults.size() <= (size_t)ServerInstance->Config->MaxWhoResults)) || opt_unlimit) { for (std::vector::const_iterator n = whoresults.begin(); n != whoresults.end(); n++) user->WriteServ(*n); user->WriteNumeric(315, "%s %s :End of /WHO list.",user->nick.c_str(), *parameters[0].c_str() ? parameters[0].c_str() : "*"); return CMD_SUCCESS; } else { /* BZZT! Too many results. */ user->WriteNumeric(315, "%s %s :Too many results",user->nick.c_str(), parameters[0].c_str()); return CMD_FAILURE; } } COMMAND_INIT(CommandWho)