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
84 * No need to include handlers.h here the signatures must match
85 * and we don't need to force a rebuild of all the handlers everytime
86 * we add a new one to the list. --Bleep
94 #include "ircd_reply.h"
95 #include "ircd_string.h"
109 * * Rewritten to make this understandable
110 * * You can nolonger /whois unregistered clients.
114 * /whois nick always shows the nick.
115 * /whois wild* shows the nick if:
116 * * they aren't +i and aren't on any channels.
117 * * they are on a common channel.
118 * * they aren't +i and are on a public channel. (not +p and not +s)
119 * * they aren't +i and are on a private channel. (+p but not +s)
120 * Or to look at it another way (I think):
121 * * +i users are only shown if your on a common channel.
122 * * users on +s channels only aren't shown.
124 * whois doesn't show what channels a +k client is on, for the reason that
125 * /whois X or /whois W floods a user off the server. :)
127 * nb: if the code and this comment disagree, the codes right and I screwed
132 * Send whois information for acptr to sptr
134 static void do_whois(struct Client* sptr, struct Client *acptr)
136 struct Client *a2cptr=0;
137 struct Channel *chptr=0;
140 static char buf[512];
142 const struct User* user = cli_user(acptr);
143 const char* name = (!*(cli_name(acptr))) ? "?" : cli_name(acptr);
144 a2cptr = user->server;
146 send_reply(sptr, RPL_WHOISUSER, name, user->username, user->host,
149 /* Display the channels this user is on. */
150 if (!IsChannelService(acptr))
152 struct Membership* chan;
153 mlen = strlen(cli_name(&me)) + strlen(cli_name(sptr)) + 12 + strlen(name);
156 for (chan = user->channel; chan; chan = chan->next_channel)
158 chptr = chan->channel;
160 if (!ShowChannel(sptr, chptr))
163 if (acptr != sptr && IsZombie(chan))
166 if (len+strlen(chptr->chname) + mlen > BUFSIZE - 5)
168 send_reply(sptr, SND_EXPLICIT | RPL_WHOISCHANNELS, "%s :%s", name, buf);
173 *(buf + len++) = '-';
174 if (is_chan_op(acptr, chptr))
175 *(buf + len++) = '@';
176 else if (has_voice(acptr, chptr))
177 *(buf + len++) = '+';
178 else if (IsZombie(chan))
179 *(buf + len++) = '!';
182 strcpy(buf + len, chptr->chname);
183 len += strlen(chptr->chname);
184 strcat(buf + len, " ");
188 send_reply(sptr, RPL_WHOISCHANNELS, name, buf);
190 send_reply(sptr, RPL_WHOISSERVER, name, cli_name(a2cptr), cli_info(a2cptr));
195 send_reply(sptr, RPL_AWAY, name, user->away);
197 if (HasPriv(acptr, PRIV_DISPLAY) || HasPriv(sptr, PRIV_SEE_OPERS))
198 send_reply(sptr, RPL_WHOISOPERATOR, name);
200 /* Hint: if your looking to add more flags to a user, eg +h, here's
201 * probably a good place to add them :)
204 if (MyConnect(acptr))
205 send_reply(sptr, RPL_WHOISIDLE, name, CurrentTime - user->last,
206 cli_firsttime(acptr));
211 * Search and return as many people as matched by the wild 'nick'.
212 * returns the number of people found (or, obviously, 0, if none where
215 static int do_wilds(struct Client* sptr,char *nick,int count)
217 struct Client *acptr; /* Current client we're concidering */
218 struct User *user; /* the user portion of the client */
219 char *name; /* the name of this client */
220 struct Membership* chan;
221 int invis; /* does +i apply? */
222 int member; /* Is this user on any channels? */
223 int showperson; /* Should we show this person? */
224 int found = 0 ; /* How many were found? */
226 /* Ech! This is hidious! */
227 for (acptr = GlobalClientList; (acptr = next_client(acptr, nick));
228 acptr = cli_next(acptr))
230 if (!IsRegistered(acptr))
236 * I'm always last :-) and acptr->next == 0!!
238 * Isomer: Does this strike anyone else as being a horrible hidious
242 assert(!cli_next(acptr));
247 * 'Rules' established for sending a WHOIS reply:
249 * - if wildcards are being used dont send a reply if
250 * the querier isnt any common channels and the
251 * client in question is invisible.
253 * - only send replies about common or public channels
254 * the target user(s) are on;
256 user = cli_user(acptr);
257 name = (!*(cli_name(acptr))) ? "?" : cli_name(acptr);
260 invis = (acptr != sptr) && IsInvisible(acptr);
261 member = (user && user->channel) ? 1 : 0;
262 showperson = !invis && !member;
264 /* Should we show this person now? */
267 do_whois(sptr,acptr);
268 if (count+found>MAX_WHOIS_LINES)
273 /* Step through the channels this user is on */
274 for (chan = user->channel; chan; chan = chan->next_channel)
276 struct Channel *chptr = chan->channel;
278 /* If this is a public channel, show the person */
279 if (!invis && PubChannel(chptr)) {
284 /* if this channel is +p and not +s, show them */
285 if (!invis && HiddenChannel(chptr) && !SecretChannel(chptr)) {
290 member = find_channel_member(sptr, chptr) ? 1 : 0;
291 if (invis && !member)
294 /* If sptr isn't really on this channel, skip it */
298 /* Is this a common channel? */
303 } /* of for (chan in channels) */
305 /* Don't show this person */
309 do_whois(sptr,acptr);
311 if (count+found>MAX_WHOIS_LINES)
313 } /* of global client list */
319 * m_whois - generic message handler
321 * parv[0] = sender prefix
322 * parv[1] = nickname masklist
326 * parv[1] = target server, or a nickname representing a server to target.
327 * parv[2] = nickname masklist
329 int m_whois(struct Client* cptr, struct Client* sptr, int parc, char* parv[])
339 send_reply(sptr, ERR_NONICKNAMEGIVEN);
345 struct Client *acptr;
346 /* For convenience: Accept a nickname as first parameter, by replacing
347 * it with the correct servername - as is needed by hunt_server().
348 * This is the secret behind the /whois nick nick trick.
350 acptr = FindUser(parv[1]);
352 parv[1] = cli_name(cli_user(acptr)->server);
353 if (hunt_server_cmd(sptr, CMD_WHOIS, cptr, 0, "%C :%s", 1, parc, parv) !=
359 for (tmp = parv[1]; (nick = ircd_strtok(&p, tmp, ",")); tmp = 0)
367 wilds = (strchr(nick, '?') || strchr(nick, '*'));
369 struct Client *acptr = 0;
371 acptr = FindUser(nick);
372 if (acptr && !IsServer(acptr)) {
373 do_whois(sptr,acptr);
378 found=do_wilds(sptr,nick,total);
381 send_reply(sptr, ERR_NOSUCHNICK, nick);
383 if (total >= MAX_WHOIS_LINES) {
384 send_reply(sptr, ERR_QUERYTOOLONG, parv[1]);
389 } /* of tokenised parm[1] */
390 send_reply(sptr, RPL_ENDOFWHOIS, parv[1]);
396 * ms_whois - server message handler
398 * parv[0] = sender prefix
399 * parv[1] = nickname masklist
403 * parv[1] = target server, or a nickname representing a server to target.
404 * parv[2] = nickname masklist
406 int ms_whois(struct Client* cptr, struct Client* sptr, int parc, char* parv[])
416 send_reply(sptr, ERR_NONICKNAMEGIVEN);
422 struct Client *acptr;
423 /* For convenience: Accept a nickname as first parameter, by replacing
424 * it with the correct servername - as is needed by hunt_server().
425 * This is the secret behind the /whois nick nick trick.
427 acptr = FindUser(parv[1]);
429 parv[1] = cli_name(cli_user(acptr)->server);
430 if (hunt_server_cmd(sptr, CMD_WHOIS, cptr, 0, "%C :%s", 1, parc, parv) !=
438 for (tmp = parv[1]; (nick = ircd_strtok(&p, tmp, ",")); tmp = 0)
440 struct Client *acptr = 0;
447 acptr = FindUser(nick);
448 if (acptr && !IsServer(acptr)) {
450 do_whois(sptr,acptr);
454 send_reply(sptr, ERR_NOSUCHNICK, nick);
458 if (total >= MAX_WHOIS_LINES) {
459 send_reply(sptr, ERR_QUERYTOOLONG, parv[1]);
465 } /* of tokenised parm[1] */
466 send_reply(sptr, RPL_ENDOFWHOIS, parv[1]);