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
86 * No need to include handlers.h here the signatures must match
87 * and we don't need to force a rebuild of all the handlers everytime
88 * we add a new one to the list. --Bleep
96 #include "ircd_policy.h"
97 #include "ircd_reply.h"
98 #include "ircd_string.h"
102 #include "numnicks.h"
112 * * Rewritten to make this understandable
113 * * You can nolonger /whois unregistered clients.
117 * /whois nick always shows the nick.
118 * /whois wild* shows the nick if:
119 * * they aren't +i and aren't on any channels.
120 * * they are on a common channel.
121 * * they aren't +i and are on a public channel. (not +p and not +s)
122 * * they aren't +i and are on a private channel. (+p but not +s)
123 * Or to look at it another way (I think):
124 * * +i users are only shown if your on a common channel.
125 * * users on +s channels only aren't shown.
127 * whois doesn't show what channels a +k client is on, for the reason that
128 * /whois X or /whois W floods a user off the server. :)
130 * nb: if the code and this comment disagree, the codes right and I screwed
135 * Send whois information for acptr to sptr
137 static void do_whois(struct Client* sptr, struct Client *acptr, int parc)
139 struct Client *a2cptr=0;
140 struct Channel *chptr=0;
143 static char buf[512];
145 const struct User* user = cli_user(acptr);
146 const char* name = (!*(cli_name(acptr))) ? "?" : cli_name(acptr);
147 a2cptr = user->server;
149 send_reply(sptr, RPL_WHOISUSER, name, user->username, user->host,
152 /* Display the channels this user is on. */
153 if (!IsChannelService(acptr))
155 struct Membership* chan;
156 mlen = strlen(cli_name(&me)) + strlen(cli_name(sptr)) + 12 + strlen(name);
159 for (chan = user->channel; chan; chan = chan->next_channel)
161 chptr = chan->channel;
163 if (!ShowChannel(sptr, chptr))
166 if (acptr != sptr && IsZombie(chan))
169 if (len+strlen(chptr->chname) + mlen > BUFSIZE - 5)
171 send_reply(sptr, SND_EXPLICIT | RPL_WHOISCHANNELS, "%s :%s", name, buf);
176 *(buf + len++) = '-';
177 if (is_chan_op(acptr, chptr))
178 *(buf + len++) = '@';
179 else if (has_voice(acptr, chptr))
180 *(buf + len++) = '+';
181 else if (IsZombie(chan))
182 *(buf + len++) = '!';
185 strcpy(buf + len, chptr->chname);
186 len += strlen(chptr->chname);
187 strcat(buf + len, " ");
191 send_reply(sptr, RPL_WHOISCHANNELS, name, buf);
194 #ifdef HEAD_IN_SAND_WHOIS_SERVERNAME
195 if (!IsAnOper(sptr) && sptr != acptr)
196 send_reply(sptr, RPL_WHOISSERVER, name, "*.undernet.org",
197 "The Undernet Underworld");
200 send_reply(sptr, RPL_WHOISSERVER, name, cli_name(a2cptr),
206 send_reply(sptr, RPL_AWAY, name, user->away);
208 if (IsAnOper(acptr) && (HasPriv(acptr, PRIV_DISPLAY) ||
209 HasPriv(sptr, PRIV_SEE_OPERS)))
210 send_reply(sptr, RPL_WHOISOPERATOR, name);
212 /* Hint: if your looking to add more flags to a user, eg +h, here's
213 * probably a good place to add them :)
217 #ifdef HEAD_IN_SAND_WHOIS_IDLETIME
218 && (sptr == acptr || IsAnOper(sptr) || parc >= 3)
221 send_reply(sptr, RPL_WHOISIDLE, name, CurrentTime - user->last,
222 cli_firsttime(acptr));
227 * Search and return as many people as matched by the wild 'nick'.
228 * returns the number of people found (or, obviously, 0, if none where
231 static int do_wilds(struct Client* sptr, char *nick, int count, int parc)
233 struct Client *acptr; /* Current client we're concidering */
234 struct User *user; /* the user portion of the client */
235 char *name; /* the name of this client */
236 struct Membership* chan;
237 int invis; /* does +i apply? */
238 int member; /* Is this user on any channels? */
239 int showperson; /* Should we show this person? */
240 int found = 0 ; /* How many were found? */
242 /* Ech! This is hidious! */
243 for (acptr = GlobalClientList; (acptr = next_client(acptr, nick));
244 acptr = cli_next(acptr))
246 if (!IsRegistered(acptr))
252 * I'm always last :-) and acptr->next == 0!!
254 * Isomer: Does this strike anyone else as being a horrible hidious
258 assert(!cli_next(acptr));
263 * 'Rules' established for sending a WHOIS reply:
265 * - if wildcards are being used dont send a reply if
266 * the querier isnt any common channels and the
267 * client in question is invisible.
269 * - only send replies about common or public channels
270 * the target user(s) are on;
272 user = cli_user(acptr);
273 name = (!*(cli_name(acptr))) ? "?" : cli_name(acptr);
276 invis = (acptr != sptr) && IsInvisible(acptr);
277 member = (user && user->channel) ? 1 : 0;
278 showperson = !invis && !member;
280 /* Should we show this person now? */
283 do_whois(sptr, acptr, parc);
284 if (count+found>MAX_WHOIS_LINES)
289 /* Step through the channels this user is on */
290 for (chan = user->channel; chan; chan = chan->next_channel)
292 struct Channel *chptr = chan->channel;
294 /* If this is a public channel, show the person */
295 if (!invis && PubChannel(chptr)) {
300 /* if this channel is +p and not +s, show them */
301 if (!invis && HiddenChannel(chptr) && !SecretChannel(chptr)) {
306 member = find_channel_member(sptr, chptr) ? 1 : 0;
307 if (invis && !member)
310 /* If sptr isn't really on this channel, skip it */
314 /* Is this a common channel? */
319 } /* of for (chan in channels) */
321 /* Don't show this person */
325 do_whois(sptr, acptr, parc);
327 if (count+found>MAX_WHOIS_LINES)
329 } /* of global client list */
335 * m_whois - generic message handler
337 * parv[0] = sender prefix
338 * parv[1] = nickname masklist
342 * parv[1] = target server, or a nickname representing a server to target.
343 * parv[2] = nickname masklist
345 int m_whois(struct Client* cptr, struct Client* sptr, int parc, char* parv[])
355 send_reply(sptr, ERR_NONICKNAMEGIVEN);
361 struct Client *acptr;
362 /* For convenience: Accept a nickname as first parameter, by replacing
363 * it with the correct servername - as is needed by hunt_server().
364 * This is the secret behind the /whois nick nick trick.
366 #if HEAD_IN_SAND_REMOTE
367 /* If remote queries are disabled, then use the *second* parameter of
368 * of whois, so /whois nick nick still works.
370 acptr = FindUser(parv[2]);
372 acptr = FindUser(parv[1]);
375 parv[1] = cli_name(cli_user(acptr)->server);
376 if (hunt_server_cmd(sptr, CMD_WHOIS, cptr, 0, "%C :%s", 1, parc, parv) !=
382 for (tmp = parv[1]; (nick = ircd_strtok(&p, tmp, ",")); tmp = 0)
390 wilds = (strchr(nick, '?') || strchr(nick, '*'));
392 struct Client *acptr = 0;
394 acptr = FindUser(nick);
395 if (acptr && !IsServer(acptr)) {
396 do_whois(sptr, acptr, parc);
401 found=do_wilds(sptr, nick, total, parc);
404 send_reply(sptr, ERR_NOSUCHNICK, nick);
406 if (total >= MAX_WHOIS_LINES) {
407 send_reply(sptr, ERR_QUERYTOOLONG, parv[1]);
412 } /* of tokenised parm[1] */
413 send_reply(sptr, RPL_ENDOFWHOIS, parv[1]);
419 * ms_whois - server message handler
421 * parv[0] = sender prefix
422 * parv[1] = nickname masklist
426 * parv[1] = target server, or a nickname representing a server to target.
427 * parv[2] = nickname masklist
429 int ms_whois(struct Client* cptr, struct Client* sptr, int parc, char* parv[])
439 send_reply(sptr, ERR_NONICKNAMEGIVEN);
445 struct Client *acptr;
446 /* For convenience: Accept a nickname as first parameter, by replacing
447 * it with the correct servername - as is needed by hunt_server().
448 * This is the secret behind the /whois nick nick trick.
450 acptr = FindUser(parv[1]);
452 parv[1] = cli_name(cli_user(acptr)->server);
453 if (hunt_server_cmd(sptr, CMD_WHOIS, cptr, 0, "%C :%s", 1, parc, parv) !=
461 for (tmp = parv[1]; (nick = ircd_strtok(&p, tmp, ",")); tmp = 0)
463 struct Client *acptr = 0;
470 acptr = FindUser(nick);
471 if (acptr && !IsServer(acptr)) {
473 do_whois(sptr, acptr, parc);
477 send_reply(sptr, ERR_NOSUCHNICK, nick);
481 if (total >= MAX_WHOIS_LINES) {
482 send_reply(sptr, ERR_QUERYTOOLONG, parv[1]);
488 } /* of tokenised parm[1] */
489 send_reply(sptr, RPL_ENDOFWHOIS, parv[1]);