/[svn]/ircd-hybrid/trunk/modules/m_whois.c
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Contents of /ircd-hybrid/trunk/modules/m_whois.c

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Revision 1652 - (show annotations)
Tue Nov 13 20:28:53 2012 UTC (7 years, 7 months ago) by michael
File MIME type: text/x-chdr
File size: 10957 byte(s)
- changed match() polarity. match() now returns 0 on match and 1 on non-match
  This cleans up several places where function pointers of different matching
  functions like irccmp/strcmp/match are passed to other functions.
- added improved collapse() to match.c

1 /*
2 * ircd-hybrid: an advanced Internet Relay Chat Daemon(ircd).
3 * m_whois.c: Shows who a user is.
4 *
5 * Copyright (C) 2005 by the past and present ircd coders, and others.
6 *
7 * This program is free software; you can redistribute it and/or modify
8 * it under the terms of the GNU General Public License as published by
9 * the Free Software Foundation; either version 2 of the License, or
10 * (at your option) any later version.
11 *
12 * This program is distributed in the hope that it will be useful,
13 * but WITHOUT ANY WARRANTY; without even the implied warranty of
14 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
15 * GNU General Public License for more details.
16 *
17 * You should have received a copy of the GNU General Public License
18 * along with this program; if not, write to the Free Software
19 * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307
20 * USA
21 *
22 * $Id$
23 */
24
25 #include "stdinc.h"
26 #include "list.h"
27 #include "client.h"
28 #include "hash.h"
29 #include "channel.h"
30 #include "channel_mode.h"
31 #include "ircd.h"
32 #include "numeric.h"
33 #include "conf.h"
34 #include "s_misc.h"
35 #include "s_serv.h"
36 #include "send.h"
37 #include "irc_string.h"
38 #include "sprintf_irc.h"
39 #include "parse.h"
40 #include "modules.h"
41
42
43 static void do_whois(struct Client *, int, char *[]);
44 static int single_whois(struct Client *, struct Client *);
45 static void whois_person(struct Client *, struct Client *);
46 static int global_whois(struct Client *, const char *);
47
48
49 /*
50 ** m_whois
51 ** parv[0] = sender prefix
52 ** parv[1] = nickname masklist
53 */
54 static void
55 m_whois(struct Client *client_p, struct Client *source_p,
56 int parc, char *parv[])
57 {
58 static time_t last_used = 0;
59
60 if (parc < 2 || EmptyString(parv[1]))
61 {
62 sendto_one(source_p, form_str(ERR_NONICKNAMEGIVEN),
63 me.name, source_p->name);
64 return;
65 }
66
67 if (parc > 2 && !EmptyString(parv[2]))
68 {
69 /* seeing as this is going across servers, we should limit it */
70 if ((last_used + ConfigFileEntry.pace_wait_simple) > CurrentTime)
71 {
72 sendto_one(source_p, form_str(RPL_LOAD2HI),
73 me.name, source_p->name);
74 return;
75 }
76
77 last_used = CurrentTime;
78
79 /* if we have serverhide enabled, they can either ask the clients
80 * server, or our server.. I dont see why they would need to ask
81 * anything else for info about the client.. --fl_
82 */
83 if (ConfigFileEntry.disable_remote)
84 parv[1] = parv[2];
85
86 if (hunt_server(client_p, source_p, ":%s WHOIS %s :%s", 1,
87 parc, parv) != HUNTED_ISME)
88 return;
89
90 parv[1] = parv[2];
91 }
92
93 do_whois(source_p, parc, parv);
94 }
95
96 /*
97 ** mo_whois
98 ** parv[0] = sender prefix
99 ** parv[1] = nickname masklist
100 */
101 static void
102 mo_whois(struct Client *client_p, struct Client *source_p,
103 int parc, char *parv[])
104 {
105 if (parc < 2 || EmptyString(parv[1]))
106 {
107 sendto_one(source_p, form_str(ERR_NONICKNAMEGIVEN),
108 me.name, source_p->name);
109 return;
110 }
111
112 if (parc > 2 && !EmptyString(parv[2]))
113 {
114 if (hunt_server(client_p, source_p, ":%s WHOIS %s :%s", 1,
115 parc, parv) != HUNTED_ISME)
116 return;
117
118 parv[1] = parv[2];
119 }
120
121 do_whois(source_p, parc, parv);
122 }
123
124 /* do_whois()
125 *
126 * inputs - pointer to /whois source
127 * - number of parameters
128 * - pointer to parameters array
129 * output - pointer to void
130 * side effects - Does whois
131 */
132 static void
133 do_whois(struct Client *source_p, int parc, char *parv[])
134 {
135 static time_t last_used = 0;
136 struct Client *target_p;
137 char *nick;
138 char *p = NULL;
139 int found = 0;
140
141 nick = parv[1];
142 while (*nick == ',')
143 nick++;
144 if ((p = strchr(nick,',')) != NULL)
145 *p = '\0';
146
147 if (*nick == '\0')
148 return;
149
150 collapse(nick);
151
152 if (strpbrk(nick, "?#*") == NULL)
153 {
154 if ((target_p = hash_find_client(nick)) != NULL)
155 {
156 if (IsClient(target_p))
157 {
158 whois_person(source_p, target_p);
159 found = 1;
160 }
161 }
162 }
163 else /* wilds is true */
164 {
165 if (!HasUMode(source_p, UMODE_OPER))
166 {
167 if ((last_used + ConfigFileEntry.pace_wait_simple) > CurrentTime)
168 {
169 sendto_one(source_p, form_str(RPL_LOAD2HI),
170 me.name, source_p->name);
171 return;
172 }
173 else
174 last_used = CurrentTime;
175 }
176
177 /* Oh-oh wilds is true so have to do it the hard expensive way */
178 if (MyClient(source_p))
179 found = global_whois(source_p, nick);
180 }
181
182 if (!found)
183 {
184 if (!IsDigit(*nick))
185 sendto_one(source_p, form_str(ERR_NOSUCHNICK),
186 me.name, source_p->name, nick);
187 }
188
189 sendto_one(source_p, form_str(RPL_ENDOFWHOIS),
190 me.name, source_p->name, parv[1]);
191 }
192
193 /* global_whois()
194 *
195 * Inputs - source_p client to report to
196 * - target_p client to report on
197 * Output - if found return 1
198 * Side Effects - do a single whois on given client
199 * writing results to source_p
200 */
201 static int
202 global_whois(struct Client *source_p, const char *nick)
203 {
204 dlink_node *ptr;
205 struct Client *target_p;
206 int found = 0;
207
208 DLINK_FOREACH(ptr, global_client_list.head)
209 {
210 target_p = ptr->data;
211
212 if (!IsClient(target_p))
213 continue;
214
215 if (match(nick, target_p->name))
216 continue;
217
218 assert(target_p->servptr != NULL);
219
220 /* 'Rules' established for sending a WHOIS reply:
221 *
222 *
223 * - if wildcards are being used dont send a reply if
224 * the querier isnt any common channels and the
225 * client in question is invisible and wildcards are
226 * in use (allow exact matches only);
227 *
228 * - only send replies about common or public channels
229 * the target user(s) are on;
230 */
231
232 found |= single_whois(source_p, target_p);
233 }
234
235 return found;
236 }
237
238 /* single_whois()
239 *
240 * Inputs - source_p client to report to
241 * - target_p client to report on
242 * Output - if found return 1
243 * Side Effects - do a single whois on given client
244 * writing results to source_p
245 */
246 static int
247 single_whois(struct Client *source_p, struct Client *target_p)
248 {
249 dlink_node *ptr = NULL;
250
251 if (!HasUMode(target_p, UMODE_INVISIBLE) || target_p == source_p)
252 {
253 /* always show user if they are visible (no +i) */
254 whois_person(source_p, target_p);
255 return 1;
256 }
257
258 /* target_p is +i. Check if it is on any common channels with source_p */
259 DLINK_FOREACH(ptr, target_p->channel.head)
260 {
261 struct Channel *chptr = ((struct Membership *) ptr->data)->chptr;
262
263 if (IsMember(source_p, chptr))
264 {
265 whois_person(source_p, target_p);
266 return 1;
267 }
268 }
269
270 return 0;
271 }
272
273 /* whois_person()
274 *
275 * inputs - source_p client to report to
276 * - target_p client to report on
277 * output - NONE
278 * side effects -
279 */
280 static void
281 whois_person(struct Client *source_p, struct Client *target_p)
282 {
283 char buf[IRCD_BUFSIZE];
284 dlink_node *lp;
285 struct Client *server_p;
286 struct Channel *chptr;
287 struct Membership *ms;
288 int cur_len = 0;
289 int mlen;
290 char *t = NULL;
291 int tlen;
292 int reply_to_send = 0;
293 int show_ip = 0;
294
295 server_p = target_p->servptr;
296
297 sendto_one(source_p, form_str(RPL_WHOISUSER),
298 me.name, source_p->name, target_p->name,
299 target_p->username, target_p->host, target_p->info);
300
301 cur_len = mlen = snprintf(buf, sizeof(buf), form_str(RPL_WHOISCHANNELS),
302 me.name, source_p->name, target_p->name, "");
303 t = buf + mlen;
304
305 DLINK_FOREACH(lp, target_p->channel.head)
306 {
307 ms = lp->data;
308 chptr = ms->chptr;
309
310 if (ShowChannel(source_p, chptr))
311 {
312 if ((cur_len + 3 + strlen(chptr->chname) + 1) > (IRCD_BUFSIZE - 2))
313 {
314 *(t - 1) = '\0';
315 sendto_one(source_p, "%s", buf);
316 cur_len = mlen;
317 t = buf + mlen;
318 }
319
320 tlen = ircsprintf(t, "%s%s ", get_member_status(ms, 1), chptr->chname);
321 t += tlen;
322 cur_len += tlen;
323 reply_to_send = 1;
324 }
325 }
326
327 if (reply_to_send)
328 {
329 *(t - 1) = '\0';
330 sendto_one(source_p, "%s", buf);
331 }
332
333 if (HasUMode(source_p, UMODE_OPER) || !ConfigServerHide.hide_servers || target_p == source_p)
334 sendto_one(source_p, form_str(RPL_WHOISSERVER),
335 me.name, source_p->name, target_p->name,
336 server_p->name, server_p->info);
337 else
338 sendto_one(source_p, form_str(RPL_WHOISSERVER),
339 me.name, source_p->name, target_p->name,
340 ConfigServerHide.hidden_name,
341 ServerInfo.network_desc);
342
343 if (HasUMode(target_p, UMODE_REGISTERED))
344 sendto_one(source_p, form_str(RPL_WHOISREGNICK),
345 me.name, source_p->name, target_p->name);
346
347 if (target_p->away[0])
348 sendto_one(source_p, form_str(RPL_AWAY),
349 me.name, source_p->name, target_p->name,
350 target_p->away);
351
352 if (HasUMode(target_p, UMODE_CALLERID) && !HasUMode(target_p, UMODE_SOFTCALLERID))
353 sendto_one(source_p, form_str(RPL_TARGUMODEG),
354 me.name, source_p->name, target_p->name);
355
356 if (HasUMode(target_p, UMODE_OPER))
357 if (!HasUMode(target_p, UMODE_HIDDEN) || HasUMode(source_p, UMODE_OPER))
358 sendto_one(source_p, form_str(HasUMode(target_p, UMODE_ADMIN) ? RPL_WHOISADMIN :
359 RPL_WHOISOPERATOR),
360 me.name, source_p->name, target_p->name);
361
362 if (strcmp(target_p->sockhost, "0"))
363 {
364 if (HasUMode(source_p, UMODE_ADMIN) || source_p == target_p)
365 show_ip = 1;
366 else if (IsIPSpoof(target_p))
367 show_ip = (HasUMode(source_p, UMODE_OPER) && !ConfigFileEntry.hide_spoof_ips);
368 else
369 show_ip = 1;
370
371 sendto_one(source_p, form_str(RPL_WHOISACTUALLY),
372 me.name, source_p->name, target_p->name,
373 show_ip ? target_p->sockhost : "255.255.255.255");
374 }
375
376 if (MyConnect(target_p)) /* Can't do any of this if not local! db */
377 {
378 #ifdef HAVE_LIBCRYPTO
379 if (target_p->localClient->fd.ssl)
380 sendto_one(source_p, form_str(RPL_WHOISSECURE),
381 me.name, source_p->name, target_p->name);
382 #endif
383 sendto_one(source_p, form_str(RPL_WHOISIDLE),
384 me.name, source_p->name, target_p->name,
385 CurrentTime - target_p->localClient->last_privmsg,
386 target_p->localClient->firsttime);
387
388 if (HasUMode(target_p, UMODE_OPER) && target_p != source_p)
389 if (HasUMode(target_p, UMODE_SPY))
390 sendto_one(target_p, ":%s NOTICE %s :*** Notice -- %s (%s@%s) [%s] is doing "
391 "a whois on you", me.name, target_p->name, source_p->name,
392 source_p->username, source_p->host, source_p->servptr->name);
393 }
394 }
395
396 static struct Message whois_msgtab = {
397 "WHOIS", 0, 0, 0, MAXPARA, MFLG_SLOW, 0,
398 { m_unregistered, m_whois, mo_whois, m_ignore, mo_whois, m_ignore }
399 };
400
401 static void
402 module_init(void)
403 {
404 mod_add_cmd(&whois_msgtab);
405 }
406
407 static void
408 module_exit(void)
409 {
410 mod_del_cmd(&whois_msgtab);
411 }
412
413 struct module module_entry = {
414 .node = { NULL, NULL, NULL },
415 .name = NULL,
416 .version = "$Revision$",
417 .handle = NULL,
418 .modinit = module_init,
419 .modexit = module_exit,
420 .flags = 0
421 };

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