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_policy.h"
95 #include "ircd_reply.h"
96 #include "ircd_string.h"
100 #include "numnicks.h"
110 * * Rewritten to make this understandable
111 * * You can nolonger /whois unregistered clients.
115 * /whois nick always shows the nick.
116 * /whois wild* shows the nick if:
117 * * they aren't +i and aren't on any channels.
118 * * they are on a common channel.
119 * * they aren't +i and are on a public channel. (not +p and not +s)
120 * * they aren't +i and are on a private channel. (+p but not +s)
121 * Or to look at it another way (I think):
122 * * +i users are only shown if your on a common channel.
123 * * users on +s channels only aren't shown.
125 * whois doesn't show what channels a +k client is on, for the reason that
126 * /whois X or /whois W floods a user off the server. :)
128 * nb: if the code and this comment disagree, the codes right and I screwed
133 * Send whois information for acptr to sptr
135 static void do_whois(struct Client* sptr, struct Client *acptr)
137 struct Client *a2cptr=0;
138 struct Channel *chptr=0;
141 static char buf[512];
143 const struct User* user = cli_user(acptr);
144 const char* name = (!*(cli_name(acptr))) ? "?" : cli_name(acptr);
145 a2cptr = user->server;
147 send_reply(sptr, RPL_WHOISUSER, name, user->username, user->host,
150 /* Display the channels this user is on. */
151 if (!IsChannelService(acptr))
153 struct Membership* chan;
154 mlen = strlen(cli_name(&me)) + strlen(cli_name(sptr)) + 12 + strlen(name);
157 for (chan = user->channel; chan; chan = chan->next_channel)
159 chptr = chan->channel;
161 if (!ShowChannel(sptr, chptr))
164 if (acptr != sptr && IsZombie(chan))
167 if (len+strlen(chptr->chname) + mlen > BUFSIZE - 5)
169 send_reply(sptr, SND_EXPLICIT | RPL_WHOISCHANNELS, "%s :%s", name, buf);
174 *(buf + len++) = '-';
175 if (is_chan_op(acptr, chptr))
176 *(buf + len++) = '@';
177 else if (has_voice(acptr, chptr))
178 *(buf + len++) = '+';
179 else if (IsZombie(chan))
180 *(buf + len++) = '!';
183 strcpy(buf + len, chptr->chname);
184 len += strlen(chptr->chname);
185 strcat(buf + len, " ");
189 send_reply(sptr, RPL_WHOISCHANNELS, name, buf);
192 #ifdef HEAD_IN_SAND_WHOIS_SERVERNAME
194 send_reply(sptr, RPL_WHOISSERVER, name, "*.undernet.org",
195 "The Undernet Underworld");
198 send_reply(sptr, RPL_WHOISSERVER, name, cli_name(a2cptr),
204 send_reply(sptr, RPL_AWAY, name, user->away);
206 if (IsAnOper(acptr) && (HasPriv(acptr, PRIV_DISPLAY) ||
207 HasPriv(sptr, PRIV_SEE_OPERS)))
208 send_reply(sptr, RPL_WHOISOPERATOR, name);
210 /* Hint: if your looking to add more flags to a user, eg +h, here's
211 * probably a good place to add them :)
214 if (MyConnect(acptr))
215 send_reply(sptr, RPL_WHOISIDLE, name, CurrentTime - user->last,
216 cli_firsttime(acptr));
221 * Search and return as many people as matched by the wild 'nick'.
222 * returns the number of people found (or, obviously, 0, if none where
225 static int do_wilds(struct Client* sptr,char *nick,int count)
227 struct Client *acptr; /* Current client we're concidering */
228 struct User *user; /* the user portion of the client */
229 char *name; /* the name of this client */
230 struct Membership* chan;
231 int invis; /* does +i apply? */
232 int member; /* Is this user on any channels? */
233 int showperson; /* Should we show this person? */
234 int found = 0 ; /* How many were found? */
236 /* Ech! This is hidious! */
237 for (acptr = GlobalClientList; (acptr = next_client(acptr, nick));
238 acptr = cli_next(acptr))
240 if (!IsRegistered(acptr))
246 * I'm always last :-) and acptr->next == 0!!
248 * Isomer: Does this strike anyone else as being a horrible hidious
252 assert(!cli_next(acptr));
257 * 'Rules' established for sending a WHOIS reply:
259 * - if wildcards are being used dont send a reply if
260 * the querier isnt any common channels and the
261 * client in question is invisible.
263 * - only send replies about common or public channels
264 * the target user(s) are on;
266 user = cli_user(acptr);
267 name = (!*(cli_name(acptr))) ? "?" : cli_name(acptr);
270 invis = (acptr != sptr) && IsInvisible(acptr);
271 member = (user && user->channel) ? 1 : 0;
272 showperson = !invis && !member;
274 /* Should we show this person now? */
277 do_whois(sptr,acptr);
278 if (count+found>MAX_WHOIS_LINES)
283 /* Step through the channels this user is on */
284 for (chan = user->channel; chan; chan = chan->next_channel)
286 struct Channel *chptr = chan->channel;
288 /* If this is a public channel, show the person */
289 if (!invis && PubChannel(chptr)) {
294 /* if this channel is +p and not +s, show them */
295 if (!invis && HiddenChannel(chptr) && !SecretChannel(chptr)) {
300 member = find_channel_member(sptr, chptr) ? 1 : 0;
301 if (invis && !member)
304 /* If sptr isn't really on this channel, skip it */
308 /* Is this a common channel? */
313 } /* of for (chan in channels) */
315 /* Don't show this person */
319 do_whois(sptr,acptr);
321 if (count+found>MAX_WHOIS_LINES)
323 } /* of global client list */
329 * m_whois - generic message handler
331 * parv[0] = sender prefix
332 * parv[1] = nickname masklist
336 * parv[1] = target server, or a nickname representing a server to target.
337 * parv[2] = nickname masklist
339 int m_whois(struct Client* cptr, struct Client* sptr, int parc, char* parv[])
349 send_reply(sptr, ERR_NONICKNAMEGIVEN);
355 struct Client *acptr;
356 /* For convenience: Accept a nickname as first parameter, by replacing
357 * it with the correct servername - as is needed by hunt_server().
358 * This is the secret behind the /whois nick nick trick.
360 acptr = FindUser(parv[1]);
362 parv[1] = cli_name(cli_user(acptr)->server);
363 if (hunt_server_cmd(sptr, CMD_WHOIS, cptr, 0, "%C :%s", 1, parc, parv) !=
369 for (tmp = parv[1]; (nick = ircd_strtok(&p, tmp, ",")); tmp = 0)
377 wilds = (strchr(nick, '?') || strchr(nick, '*'));
379 struct Client *acptr = 0;
381 acptr = FindUser(nick);
382 if (acptr && !IsServer(acptr)) {
383 do_whois(sptr,acptr);
388 found=do_wilds(sptr,nick,total);
391 send_reply(sptr, ERR_NOSUCHNICK, nick);
393 if (total >= MAX_WHOIS_LINES) {
394 send_reply(sptr, ERR_QUERYTOOLONG, parv[1]);
399 } /* of tokenised parm[1] */
400 send_reply(sptr, RPL_ENDOFWHOIS, parv[1]);
406 * ms_whois - server message handler
408 * parv[0] = sender prefix
409 * parv[1] = nickname masklist
413 * parv[1] = target server, or a nickname representing a server to target.
414 * parv[2] = nickname masklist
416 int ms_whois(struct Client* cptr, struct Client* sptr, int parc, char* parv[])
426 send_reply(sptr, ERR_NONICKNAMEGIVEN);
432 struct Client *acptr;
433 /* For convenience: Accept a nickname as first parameter, by replacing
434 * it with the correct servername - as is needed by hunt_server().
435 * This is the secret behind the /whois nick nick trick.
437 acptr = FindUser(parv[1]);
439 parv[1] = cli_name(cli_user(acptr)->server);
440 if (hunt_server_cmd(sptr, CMD_WHOIS, cptr, 0, "%C :%s", 1, parc, parv) !=
448 for (tmp = parv[1]; (nick = ircd_strtok(&p, tmp, ",")); tmp = 0)
450 struct Client *acptr = 0;
457 acptr = FindUser(nick);
458 if (acptr && !IsServer(acptr)) {
460 do_whois(sptr,acptr);
464 send_reply(sptr, ERR_NOSUCHNICK, nick);
468 if (total >= MAX_WHOIS_LINES) {
469 send_reply(sptr, ERR_QUERYTOOLONG, parv[1]);
475 } /* of tokenised parm[1] */
476 send_reply(sptr, RPL_ENDOFWHOIS, parv[1]);