/*
* InspIRCd -- Internet Relay Chat Daemon
*
* Copyright (C) 2009-2010 Daniel De Graaf <danieldg@inspircd.org>
* Copyright (C) 2007-2008 Robin Burchell <robin+git@viroteck.net>
*
* 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 <http://www.gnu.org/licenses/>.
*/
#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_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) {
syntax = "<server>|<nickname>|<channel>|<realname>|<host>|0 [ohurmMiaplf]";
}
void SendWhoLine(User* user, const std::vector<std::string>& parms, 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 Channel* 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;
}
return NULL;
}
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 = ServerInstance->Duration(matchtext);
// Okay, so time matching, we want all users connected `seconds' ago
if (user->signon >= 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::vector<std::string>& parms, const std::string &initial, Channel* ch, User* u, std::vector<std::string> &whoresults)
{
if (!ch)
ch = get_first_visible_channel(u);
std::string wholine = initial + (ch ? ch->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);
wholine.append(" " + u->nick + " ");
/* away? */
if (IS_AWAY(u))
{
wholine.append("G");
}
else
{
wholine.append("H");
}
/* oper? */
if (IS_OPER(u))
{
wholine.push_back('*');
}
if (ch)
wholine.append(ch->GetPrefixChar(u));
wholine.append(" :0 " + u->fullname);
FOREACH_MOD(I_OnSendWhoLine, OnSendWhoLine(user, parms, u, 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_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 " + 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 == '?' || *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 '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, parameters, 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, parameters, 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, parameters, initial, NULL, i->second, whoresults);
}
}
}
}
/* Send the results out */
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() : "*");
// 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)
