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.
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))
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)
158 && !(IsOper(sptr) && IsLocalChannel(chptr->chname)))
161 if (acptr != sptr && IsZombie(chan))
164 /* Don't show local channels when HIS is defined, unless it's a
165 * remote WHOIS --ULtimaTe_
167 if (IsLocalChannel(chptr->chname) && (acptr != sptr) && (parc == 2)
168 && feature_bool(FEAT_HIS_WHOIS_LOCALCHAN) && !IsAnOper(sptr))
171 if (len+strlen(chptr->chname) + mlen > BUFSIZE - 5)
173 send_reply(sptr, SND_EXPLICIT | RPL_WHOISCHANNELS, "%s :%s", name, buf);
178 *(buf + len++) = '-';
179 if (!ShowChannel(sptr, chptr))
180 *(buf + len++) = '*';
181 if (IsDelayedJoin(chan) && (sptr != acptr))
182 *(buf + len++) = '<';
183 else if (IsChanOp(chan))
184 *(buf + len++) = '@';
185 else if (HasVoice(chan))
186 *(buf + len++) = '+';
187 else if (IsZombie(chan))
188 *(buf + len++) = '!';
191 strcpy(buf + len, chptr->chname);
192 len += strlen(chptr->chname);
193 strcat(buf + len, " ");
197 send_reply(sptr, RPL_WHOISCHANNELS, name, buf);
200 send_reply(sptr, RPL_WHOISSERVER, name, cli_name(a2cptr),
206 send_reply(sptr, RPL_AWAY, name, user->away);
208 if (SeeOper(sptr,acptr))
209 send_reply(sptr, RPL_WHOISOPERATOR, name);
211 if (IsAccount(acptr))
212 send_reply(sptr, RPL_WHOISACCOUNT, name, user->account);
214 if (HasHiddenHost(acptr) && (IsAnOper(sptr) || acptr == sptr))
215 send_reply(sptr, RPL_WHOISACTUALLY, name, user->username,
216 user->realhost, ircd_ntoa(&cli_ip(acptr)));
218 /* Hint: if your looking to add more flags to a user, eg +h, here's
219 * probably a good place to add them :)
222 if (MyConnect(acptr) && (!feature_bool(FEAT_HIS_WHOIS_IDLETIME) ||
223 (sptr == acptr || IsAnOper(sptr) || parc >= 3)))
224 send_reply(sptr, RPL_WHOISIDLE, name, CurrentTime - user->last,
225 cli_firsttime(acptr));
230 * Search and return as many people as matched by the wild 'nick'.
231 * returns the number of people found (or, obviously, 0, if none where
234 static int do_wilds(struct Client* sptr, char *nick, int count, int parc)
236 struct Client *acptr; /* Current client we're considering */
237 struct User *user; /* the user portion of the client */
238 struct Membership* chan;
239 int invis; /* does +i apply? */
240 int member; /* Is this user on any channels? */
241 int showperson; /* Should we show this person? */
242 int found = 0 ; /* How many were found? */
244 /* Ech! This is hideous! */
245 for (acptr = GlobalClientList; (acptr = next_client(acptr, nick));
246 acptr = cli_next(acptr))
248 if (!IsRegistered(acptr))
254 * I'm always last :-) and acptr->next == 0!!
256 * Isomer: Does this strike anyone else as being a horrible hideous
260 assert(!cli_next(acptr));
265 * 'Rules' established for sending a WHOIS reply:
267 * - if wildcards are being used don't send a reply if
268 * the querier isn't any common channels and the
269 * client in question is invisible.
271 * - only send replies about common or public channels
272 * the target user(s) are on;
274 user = cli_user(acptr);
277 invis = (acptr != sptr) && IsInvisible(acptr);
278 member = (user && user->channel) ? 1 : 0;
279 showperson = !invis && !member;
281 /* Should we show this person now? */
284 do_whois(sptr, acptr, parc);
285 if (count+found>MAX_WHOIS_LINES)
290 /* Step through the channels this user is on */
291 for (chan = user->channel; chan; chan = chan->next_channel)
293 struct Channel *chptr = chan->channel;
295 /* If this is a public channel, show the person */
296 if (!invis && PubChannel(chptr)) {
301 /* if this channel is +p and not +s, show them */
302 if (!invis && HiddenChannel(chptr) && !SecretChannel(chptr)) {
307 member = find_channel_member(sptr, chptr) ? 1 : 0;
308 if (invis && !member)
311 /* If sptr isn't really on this channel, skip it */
315 /* Is this a common channel? */
320 } /* of for (chan in channels) */
322 /* Don't show this person */
326 do_whois(sptr, acptr, parc);
328 if (count+found>MAX_WHOIS_LINES)
330 } /* of global client list */
336 * m_whois - generic message handler
338 * parv[0] = sender prefix
339 * parv[1] = nickname masklist
343 * parv[1] = target server, or a nickname representing a server to target.
344 * parv[2] = nickname masklist
346 int m_whois(struct Client* cptr, struct Client* sptr, int parc, char* parv[])
357 send_reply(sptr, ERR_NONICKNAMEGIVEN);
363 /* For convenience: Accept a nickname as first parameter, by replacing
364 * it with the correct servername - as is needed by hunt_server().
365 * This is the secret behind the /whois nick nick trick.
367 if (feature_int(FEAT_HIS_REMOTE))
369 /* If remote queries are disabled, then use the *second* parameter of
370 * of whois, so /whois nick nick still works.
374 if (!FindUser(parv[2]))
376 send_reply(sptr, ERR_NOSUCHNICK, parv[2]);
377 send_reply(sptr, RPL_ENDOFWHOIS, parv[2]);
384 if (hunt_server_cmd(sptr, CMD_WHOIS, cptr, 0, "%C :%s", 1, parc, parv) !=
391 for (tmp = parv[1]; (nick = ircd_strtok(&p, tmp, ",")); tmp = 0)
399 wilds = (strchr(nick, '?') || strchr(nick, '*'));
401 struct Client *acptr = 0;
403 acptr = FindUser(nick);
404 if (acptr && !IsServer(acptr)) {
405 do_whois(sptr, acptr, parc);
411 if (++wildscount > 3) {
412 send_reply(sptr, ERR_QUERYTOOLONG, parv[1]);
415 found=do_wilds(sptr, nick, total, parc);
419 send_reply(sptr, ERR_NOSUCHNICK, nick);
421 if (total >= MAX_WHOIS_LINES) {
422 send_reply(sptr, ERR_QUERYTOOLONG, parv[1]);
427 } /* of tokenised parm[1] */
428 send_reply(sptr, RPL_ENDOFWHOIS, parv[1]);
434 * ms_whois - server message handler
436 * parv[0] = sender prefix
437 * parv[1] = nickname masklist
441 * parv[1] = target server, or a nickname representing a server to target.
442 * parv[2] = nickname masklist
444 int ms_whois(struct Client* cptr, struct Client* sptr, int parc, char* parv[])
454 send_reply(sptr, ERR_NONICKNAMEGIVEN);
460 if (hunt_server_cmd(sptr, CMD_WHOIS, cptr, 0, "%C :%s", 1, parc, parv) !=
468 for (tmp = parv[1]; (nick = ircd_strtok(&p, tmp, ",")); tmp = 0)
470 struct Client *acptr = 0;
477 acptr = FindUser(nick);
478 if (acptr && !IsServer(acptr)) {
480 do_whois(sptr, acptr, parc);
484 send_reply(sptr, ERR_NOSUCHNICK, nick);
488 if (total >= MAX_WHOIS_LINES) {
489 send_reply(sptr, ERR_QUERYTOOLONG, parv[1]);
495 } /* of tokenised parm[1] */
496 send_reply(sptr, RPL_ENDOFWHOIS, parv[1]);