2 * IRC - Internet Relay Chat, ircd/m_whois.c
3 * Copyright (C) 1990 Jarkko Oikarinen and
4 * University of Oulu, Computing Center
6 * See file AUTHORS in IRC package for additional names of
9 * This program is free software; you can redistribute it and/or modify
10 * it under the terms of the GNU General Public License as published by
11 * the Free Software Foundation; either version 1, or (at your option)
14 * This program is distributed in the hope that it will be useful,
15 * but WITHOUT ANY WARRANTY; without even the implied warranty of
16 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
17 * GNU General Public License for more details.
19 * You should have received a copy of the GNU General Public License
20 * along with this program; if not, write to the Free Software
21 * Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
23 * $Id: m_whois.c 1667 2006-06-09 02:16:17Z entrope $
27 * m_functions execute protocol messages on this server:
29 * cptr is always NON-NULL, pointing to a *LOCAL* client
30 * structure (with an open socket connected!). This
31 * identifies the physical socket where the message
32 * originated (or which caused the m_function to be
33 * executed--some m_functions may call others...).
35 * sptr is the source of the message, defined by the
36 * prefix part of the message if present. If not
37 * or prefix not found, then sptr==cptr.
39 * (!IsServer(cptr)) => (cptr == sptr), because
40 * prefixes are taken *only* from servers...
43 * (sptr == cptr) => the message didn't
46 * (sptr != cptr && IsServer(sptr) means
47 * the prefix specified servername. (?)
49 * (sptr != cptr && !IsServer(sptr) means
50 * that message originated from a remote
55 * (!IsServer(sptr)) means that, sptr can safely
56 * taken as defining the target structure of the
57 * message in this server.
59 * *Always* true (if 'parse' and others are working correct):
61 * 1) sptr->from == cptr (note: cptr->from == cptr)
63 * 2) MyConnect(sptr) <=> sptr == cptr (e.g. sptr
64 * *cannot* be a local connection, unless it's
65 * actually cptr!). [MyConnect(x) should probably
66 * be defined as (x == x->from) --msa ]
68 * parc number of variable parameter strings (if zero,
69 * parv is allowed to be NULL)
71 * parv a NULL terminated list of parameter pointers,
73 * parv[0], sender (prefix string), if not present
74 * this points to an empty string.
75 * parv[1]...parv[parc-1]
76 * pointers to additional parameters
77 * parv[parc] == NULL, *always*
79 * note: it is guaranteed that parv[0]..parv[parc-1] are all
88 #include "ircd_features.h"
90 #include "ircd_reply.h"
91 #include "ircd_string.h"
100 /* #include <assert.h> -- Now using assert in ircd_log.h */
105 * * Rewritten to make this understandable
106 * * You can no longer /whois unregistered clients.
110 * /whois nick always shows the nick.
111 * /whois wild* shows the nick if:
112 * * they aren't +i and aren't on any channels.
113 * * they are on a common channel.
114 * * they aren't +i and are on a public channel. (not +p and not +s)
115 * * they aren't +i and are on a private channel. (+p but not +s)
116 * Or to look at it another way (I think):
117 * * +i users are only shown if your on a common channel.
118 * * users on +s channels only aren't shown.
120 * whois doesn't show what channels a +k client is on, for the reason that
121 * /whois X or /whois W floods a user off the server. :)
123 * nb: if the code and this comment disagree, the codes right and I screwed
128 * Send whois information for acptr to sptr
130 static void do_whois(struct Client* sptr, struct Client *acptr, int parc)
132 struct Client *a2cptr=0;
133 struct Channel *chptr=0;
136 static char buf[512];
138 const struct User* user = cli_user(acptr);
139 const char* name = (!*(cli_name(acptr))) ? "?" : cli_name(acptr);
140 a2cptr = feature_bool(FEAT_HIS_WHOIS_SERVERNAME) && !IsAnOper(sptr)
141 && sptr != acptr ? &his : user->server;
143 send_reply(sptr, RPL_WHOISUSER, name, user->username, user->host,
146 /* Display the channels this user is on. */
147 if (!IsChannelService(acptr) && (!IsNoChan(acptr) || IsAnOper(sptr) || acptr == sptr))
149 struct Membership* chan;
150 mlen = strlen(cli_name(&me)) + strlen(cli_name(sptr)) + 12 + strlen(name);
153 for (chan = user->channel; chan; chan = chan->next_channel)
155 chptr = chan->channel;
157 if (!ShowChannel(sptr, chptr) && !IsAnOper(sptr))
160 if (acptr != sptr && IsZombie(chan))
163 /* Don't show local channels when HIS is defined, unless it's a
164 * remote WHOIS --ULtimaTe_
166 if (IsLocalChannel(chptr->chname) && (acptr != sptr) && (parc == 2)
167 && feature_bool(FEAT_HIS_WHOIS_LOCALCHAN) && !IsAnOper(sptr))
170 if (len+strlen(chptr->chname) + mlen > BUFSIZE - 5)
172 send_reply(sptr, SND_EXPLICIT | RPL_WHOISCHANNELS, "%s :%s", name, buf);
177 *(buf + len++) = '-';
178 if (!ShowChannel(sptr, chptr))
179 *(buf + len++) = '*';
180 if (IsDelayedJoin(chan) && (sptr != acptr))
181 *(buf + len++) = '<';
182 else if (IsChanOp(chan))
183 *(buf + len++) = '@';
184 else if (IsHalfOp(chan))
185 *(buf + len++) = '%';
186 else if (HasVoice(chan))
187 *(buf + len++) = '+';
188 else if (IsZombie(chan))
189 *(buf + len++) = '!';
192 strcpy(buf + len, chptr->chname);
193 len += strlen(chptr->chname);
194 strcat(buf + len, " ");
198 send_reply(sptr, RPL_WHOISCHANNELS, name, buf);
200 if (MyUser(acptr) && IsAnOper(sptr) && *cli_connclass(acptr)) {
201 send_reply(sptr, RPL_WHOISSERVER, name, cli_name(a2cptr),cli_info(a2cptr),"class: ",cli_connclass(acptr));
203 send_reply(sptr, RPL_WHOISSERVER, name, cli_name(a2cptr),cli_info(a2cptr),"","*");
209 send_reply(sptr, RPL_AWAY, name, user->away);
211 if (SeeOper(sptr,acptr)) {
212 if (IsNetServ(acptr)) {
213 if (HasFlag(acptr, FLAG_SECURITY_SERV)) {
214 send_reply(sptr, RPL_WHOISOPERATOR, name, "is a Network Service");
216 send_reply(sptr, RPL_WHOISOPERATOR, name, "is an illegal Network Service - HACKER!");
218 } else if (IsHiddenOper(acptr)) {
219 send_reply(sptr, RPL_WHOISOPERATOR, name, "is a hidden IRC Operator");
221 send_reply(sptr, RPL_WHOISOPERATOR, name, "is an IRC Operator");
225 if (IsAccount(acptr))
226 send_reply(sptr, RPL_WHOISACCOUNT, name, user->account);
228 if (HasHiddenHost(acptr) && (IsAnOper(sptr) || acptr == sptr))
229 send_reply(sptr, RPL_WHOISACTUALLY, name, user->username,
230 user->realhost, ircd_ntoa(&cli_ip(acptr)));
232 /* Hint: if your looking to add more flags to a user, eg +h, here's
233 * probably a good place to add them :)
237 send_reply(sptr, RPL_WHOISSSL, name);
239 if (IsWebIRC(acptr)) {
240 /* Unless the real host is not broadcasted we need to check here, whether we know the real host. */
241 if(*cli_webirc(acptr) && (IsOper(sptr) || acptr == sptr))
242 send_reply(sptr, RPL_WHOISWEBIRCLONG, name, cli_webirc(acptr), cli_real_sockhost(acptr), cli_real_sock_ip(acptr));
244 send_reply(sptr, RPL_WHOISWEBIRC, name);
247 if (MyConnect(acptr) && CanSeeIdletime(sptr, acptr))
248 send_reply(sptr, RPL_WHOISIDLE, name, CurrentTime - user->last,
249 cli_firsttime(acptr));
254 * Search and return as many people as matched by the wild 'nick'.
255 * returns the number of people found (or, obviously, 0, if none where
258 static int do_wilds(struct Client* sptr, char *nick, int count, int parc)
260 struct Client *acptr; /* Current client we're considering */
261 struct User *user; /* the user portion of the client */
262 const char *name; /* the name of this client */
263 struct Membership* chan;
264 int invis; /* does +i apply? */
265 int member; /* Is this user on any channels? */
266 int showperson; /* Should we show this person? */
267 int found = 0 ; /* How many were found? */
269 /* Ech! This is hideous! */
270 for (acptr = GlobalClientList; (acptr = next_client(acptr, nick));
271 acptr = cli_next(acptr))
273 if (!IsRegistered(acptr))
279 * I'm always last :-) and acptr->next == 0!!
281 * Isomer: Does this strike anyone else as being a horrible hideous
285 assert(!cli_next(acptr));
290 * 'Rules' established for sending a WHOIS reply:
292 * - if wildcards are being used don't send a reply if
293 * the querier isn't any common channels and the
294 * client in question is invisible.
296 * - only send replies about common or public channels
297 * the target user(s) are on;
299 user = cli_user(acptr);
300 name = (!*(cli_name(acptr))) ? "?" : cli_name(acptr);
303 invis = (acptr != sptr) && IsInvisible(acptr);
304 member = (user && user->channel) ? 1 : 0;
305 showperson = !invis && !member;
307 /* Should we show this person now? */
310 do_whois(sptr, acptr, parc);
311 if (count+found>MAX_WHOIS_LINES)
316 /* Step through the channels this user is on */
317 for (chan = user->channel; chan; chan = chan->next_channel)
319 struct Channel *chptr = chan->channel;
321 /* If this is a public channel, show the person */
322 if (!invis && PubChannel(chptr)) {
327 /* if this channel is +p and not +s, show them */
328 if (!invis && HiddenChannel(chptr) && !SecretChannel(chptr)) {
333 member = find_channel_member(sptr, chptr) ? 1 : 0;
334 if (invis && !member)
337 /* If sptr isn't really on this channel, skip it */
341 /* Is this a common channel? */
346 } /* of for (chan in channels) */
348 /* Don't show this person */
352 do_whois(sptr, acptr, parc);
354 if (count+found>MAX_WHOIS_LINES)
356 } /* of global client list */
362 * m_whois - generic message handler
364 * parv[0] = sender prefix
365 * parv[1] = nickname masklist
369 * parv[1] = target server, or a nickname representing a server to target.
370 * parv[2] = nickname masklist
372 int m_whois(struct Client* cptr, struct Client* sptr, int parc, char* parv[])
383 send_reply(sptr, ERR_NONICKNAMEGIVEN);
389 /* For convenience: Accept a nickname as first parameter, by replacing
390 * it with the correct servername - as is needed by hunt_server().
391 * This is the secret behind the /whois nick nick trick.
393 if (feature_int(FEAT_HIS_REMOTE))
395 /* If remote queries are disabled, then use the *second* parameter of
396 * of whois, so /whois nick nick still works.
400 if (!FindUser(parv[2]))
402 send_reply(sptr, ERR_NOSUCHNICK, parv[2]);
403 send_reply(sptr, RPL_ENDOFWHOIS, parv[2]);
410 if (hunt_server_cmd(sptr, CMD_WHOIS, cptr, 0, "%C :%s", 1, parc, parv) !=
417 for (tmp = parv[1]; (nick = ircd_strtok(&p, tmp, ",")); tmp = 0)
425 wilds = (strchr(nick, '?') || strchr(nick, '*'));
427 struct Client *acptr = 0;
429 acptr = FindUser(nick);
430 if (acptr && !IsServer(acptr)) {
431 do_whois(sptr, acptr, parc);
437 if (++wildscount > 3) {
438 send_reply(sptr, ERR_QUERYTOOLONG, parv[1]);
441 found=do_wilds(sptr, nick, total, parc);
445 send_reply(sptr, ERR_NOSUCHNICK, nick);
447 if (total >= MAX_WHOIS_LINES) {
448 send_reply(sptr, ERR_QUERYTOOLONG, parv[1]);
453 } /* of tokenised parm[1] */
454 send_reply(sptr, RPL_ENDOFWHOIS, parv[1]);
460 * ms_whois - server message handler
462 * parv[0] = sender prefix
463 * parv[1] = nickname masklist
467 * parv[1] = target server, or a nickname representing a server to target.
468 * parv[2] = nickname masklist
470 int ms_whois(struct Client* cptr, struct Client* sptr, int parc, char* parv[])
480 send_reply(sptr, ERR_NONICKNAMEGIVEN);
486 if (hunt_server_cmd(sptr, CMD_WHOIS, cptr, 0, "%C :%s", 1, parc, parv) !=
494 for (tmp = parv[1]; (nick = ircd_strtok(&p, tmp, ",")); tmp = 0)
496 struct Client *acptr = 0;
503 acptr = FindUser(nick);
504 if (acptr && !IsServer(acptr)) {
506 do_whois(sptr, acptr, parc);
510 send_reply(sptr, ERR_NOSUCHNICK, nick);
514 if (total >= MAX_WHOIS_LINES) {
515 send_reply(sptr, ERR_QUERYTOOLONG, parv[1]);
521 } /* of tokenised parm[1] */
522 send_reply(sptr, RPL_ENDOFWHOIS, parv[1]);