diff options
Diffstat (limited to 'src/modules/cmd_who.cpp')
| -rw-r--r-- | src/modules/cmd_who.cpp | 403 |
1 files changed, 403 insertions, 0 deletions
diff --git a/src/modules/cmd_who.cpp b/src/modules/cmd_who.cpp new file mode 100644 index 000000000..89ca60d02 --- /dev/null +++ b/src/modules/cmd_who.cpp @@ -0,0 +1,403 @@ +/* +------------------------------------+ + * | 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 = "<server>|<nickname>|<channel>|<realname>|<host>|0 [ohurmMiaplf]"; } + void SendWhoLine(User* user, const std::string &initial, Channel* ch, User* u, std::vector<std::string> &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<std::string>& 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 || 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<std::string> &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 && !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<std::string>& parameters, User *user) +{ + /* + * XXX - RFC says: + * The <name> 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<std::string> 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 (ServerInstance->FindServerName(matchtext)) + usingwildcards = true; + + 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) + opt_local = true; + break; + case 'f': + if (user->HasPrivPermission("users/auspex") || !*ServerInstance->Config->HideWhoisServer) + 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<User*>::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<std::string>::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) |