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 (IsAnOper(acptr) && (HasPriv(acptr, PRIV_DISPLAY) ||
198 HasPriv(sptr, PRIV_SEE_OPERS)))
199 send_reply(sptr, RPL_WHOISOPERATOR, name);
201 /* Hint: if your looking to add more flags to a user, eg +h, here's
202 * probably a good place to add them :)
205 if (MyConnect(acptr))
206 send_reply(sptr, RPL_WHOISIDLE, name, CurrentTime - user->last,
207 cli_firsttime(acptr));
212 * Search and return as many people as matched by the wild 'nick'.
213 * returns the number of people found (or, obviously, 0, if none where
216 static int do_wilds(struct Client* sptr,char *nick,int count)
218 struct Client *acptr; /* Current client we're concidering */
219 struct User *user; /* the user portion of the client */
220 char *name; /* the name of this client */
221 struct Membership* chan;
222 int invis; /* does +i apply? */
223 int member; /* Is this user on any channels? */
224 int showperson; /* Should we show this person? */
225 int found = 0 ; /* How many were found? */
227 /* Ech! This is hidious! */
228 for (acptr = GlobalClientList; (acptr = next_client(acptr, nick));
229 acptr = cli_next(acptr))
231 if (!IsRegistered(acptr))
237 * I'm always last :-) and acptr->next == 0!!
239 * Isomer: Does this strike anyone else as being a horrible hidious
243 assert(!cli_next(acptr));
248 * 'Rules' established for sending a WHOIS reply:
250 * - if wildcards are being used dont send a reply if
251 * the querier isnt any common channels and the
252 * client in question is invisible.
254 * - only send replies about common or public channels
255 * the target user(s) are on;
257 user = cli_user(acptr);
258 name = (!*(cli_name(acptr))) ? "?" : cli_name(acptr);
261 invis = (acptr != sptr) && IsInvisible(acptr);
262 member = (user && user->channel) ? 1 : 0;
263 showperson = !invis && !member;
265 /* Should we show this person now? */
268 do_whois(sptr,acptr);
269 if (count+found>MAX_WHOIS_LINES)
274 /* Step through the channels this user is on */
275 for (chan = user->channel; chan; chan = chan->next_channel)
277 struct Channel *chptr = chan->channel;
279 /* If this is a public channel, show the person */
280 if (!invis && PubChannel(chptr)) {
285 /* if this channel is +p and not +s, show them */
286 if (!invis && HiddenChannel(chptr) && !SecretChannel(chptr)) {
291 member = find_channel_member(sptr, chptr) ? 1 : 0;
292 if (invis && !member)
295 /* If sptr isn't really on this channel, skip it */
299 /* Is this a common channel? */
304 } /* of for (chan in channels) */
306 /* Don't show this person */
310 do_whois(sptr,acptr);
312 if (count+found>MAX_WHOIS_LINES)
314 } /* of global client list */
320 * m_whois - generic message handler
322 * parv[0] = sender prefix
323 * parv[1] = nickname masklist
327 * parv[1] = target server, or a nickname representing a server to target.
328 * parv[2] = nickname masklist
330 int m_whois(struct Client* cptr, struct Client* sptr, int parc, char* parv[])
340 send_reply(sptr, ERR_NONICKNAMEGIVEN);
346 struct Client *acptr;
347 /* For convenience: Accept a nickname as first parameter, by replacing
348 * it with the correct servername - as is needed by hunt_server().
349 * This is the secret behind the /whois nick nick trick.
351 acptr = FindUser(parv[1]);
353 parv[1] = cli_name(cli_user(acptr)->server);
354 if (hunt_server_cmd(sptr, CMD_WHOIS, cptr, 0, "%C :%s", 1, parc, parv) !=
360 for (tmp = parv[1]; (nick = ircd_strtok(&p, tmp, ",")); tmp = 0)
368 wilds = (strchr(nick, '?') || strchr(nick, '*'));
370 struct Client *acptr = 0;
372 acptr = FindUser(nick);
373 if (acptr && !IsServer(acptr)) {
374 do_whois(sptr,acptr);
379 found=do_wilds(sptr,nick,total);
382 send_reply(sptr, ERR_NOSUCHNICK, nick);
384 if (total >= MAX_WHOIS_LINES) {
385 send_reply(sptr, ERR_QUERYTOOLONG, parv[1]);
390 } /* of tokenised parm[1] */
391 send_reply(sptr, RPL_ENDOFWHOIS, parv[1]);
397 * ms_whois - server message handler
399 * parv[0] = sender prefix
400 * parv[1] = nickname masklist
404 * parv[1] = target server, or a nickname representing a server to target.
405 * parv[2] = nickname masklist
407 int ms_whois(struct Client* cptr, struct Client* sptr, int parc, char* parv[])
417 send_reply(sptr, ERR_NONICKNAMEGIVEN);
423 struct Client *acptr;
424 /* For convenience: Accept a nickname as first parameter, by replacing
425 * it with the correct servername - as is needed by hunt_server().
426 * This is the secret behind the /whois nick nick trick.
428 acptr = FindUser(parv[1]);
430 parv[1] = cli_name(cli_user(acptr)->server);
431 if (hunt_server_cmd(sptr, CMD_WHOIS, cptr, 0, "%C :%s", 1, parc, parv) !=
439 for (tmp = parv[1]; (nick = ircd_strtok(&p, tmp, ",")); tmp = 0)
441 struct Client *acptr = 0;
448 acptr = FindUser(nick);
449 if (acptr && !IsServer(acptr)) {
451 do_whois(sptr,acptr);
455 send_reply(sptr, ERR_NOSUCHNICK, nick);
459 if (total >= MAX_WHOIS_LINES) {
460 send_reply(sptr, ERR_QUERYTOOLONG, parv[1]);
466 } /* of tokenised parm[1] */
467 send_reply(sptr, RPL_ENDOFWHOIS, parv[1]);