]>
Commit | Line | Data |
---|---|---|
1 | /* | |
2 | * ircd-ratbox: A slightly useful ircd. | |
3 | * m_whois.c: Shows who a user is. | |
4 | * | |
5 | * Copyright (C) 1990 Jarkko Oikarinen and University of Oulu, Co Center | |
6 | * Copyright (C) 1996-2002 Hybrid Development Team | |
7 | * Copyright (C) 2002-2005 ircd-ratbox development team | |
8 | * | |
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 2 of the License, or | |
12 | * (at your option) any later version. | |
13 | * | |
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. | |
18 | * | |
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., 59 Temple Place, Suite 330, Boston, MA 02111-1307 | |
22 | * USA | |
23 | */ | |
24 | ||
25 | #include "stdinc.h" | |
26 | #include "client.h" | |
27 | #include "hash.h" | |
28 | #include "channel.h" | |
29 | #include "hash.h" | |
30 | #include "ircd.h" | |
31 | #include "numeric.h" | |
32 | #include "s_conf.h" | |
33 | #include "s_user.h" | |
34 | #include "s_serv.h" | |
35 | #include "send.h" | |
36 | #include "match.h" | |
37 | #include "logger.h" | |
38 | #include "msg.h" | |
39 | #include "parse.h" | |
40 | #include "modules.h" | |
41 | #include "hook.h" | |
42 | #include "s_newconf.h" | |
43 | #include "ratelimit.h" | |
44 | #include "s_assert.h" | |
45 | ||
46 | static const char whois_desc[] = | |
47 | "Provides the WHOIS command to display information about a user"; | |
48 | ||
49 | static void do_whois(struct Client *client_p, struct Client *source_p, int parc, const char *parv[]); | |
50 | static void single_whois(struct Client *source_p, struct Client *target_p, int operspy); | |
51 | ||
52 | static void m_whois(struct MsgBuf *, struct Client *, struct Client *, int, const char **); | |
53 | static void ms_whois(struct MsgBuf *, struct Client *, struct Client *, int, const char **); | |
54 | ||
55 | struct Message whois_msgtab = { | |
56 | "WHOIS", 0, 0, 0, 0, | |
57 | {mg_unreg, {m_whois, 2}, {ms_whois, 2}, mg_ignore, mg_ignore, {m_whois, 2}} | |
58 | }; | |
59 | ||
60 | int doing_whois_hook; | |
61 | int doing_whois_global_hook; | |
62 | int doing_whois_channel_visibility_hook; | |
63 | int doing_whois_show_idle_hook; | |
64 | ||
65 | mapi_clist_av1 whois_clist[] = { &whois_msgtab, NULL }; | |
66 | mapi_hlist_av1 whois_hlist[] = { | |
67 | { "doing_whois", &doing_whois_hook }, | |
68 | { "doing_whois_global", &doing_whois_global_hook }, | |
69 | { "doing_whois_channel_visibility", &doing_whois_channel_visibility_hook }, | |
70 | { "doing_whois_show_idle", &doing_whois_show_idle_hook }, | |
71 | { NULL, NULL } | |
72 | }; | |
73 | ||
74 | DECLARE_MODULE_AV2(whois, NULL, NULL, whois_clist, whois_hlist, NULL, NULL, NULL, whois_desc); | |
75 | ||
76 | /* | |
77 | * m_whois | |
78 | * parv[1] = nickname masklist | |
79 | */ | |
80 | static void | |
81 | m_whois(struct MsgBuf *msgbuf_p, struct Client *client_p, struct Client *source_p, int parc, const char *parv[]) | |
82 | { | |
83 | static time_t last_used = 0; | |
84 | ||
85 | if(parc > 2) | |
86 | { | |
87 | if(EmptyString(parv[2])) | |
88 | { | |
89 | sendto_one(source_p, form_str(ERR_NONICKNAMEGIVEN), | |
90 | me.name, source_p->name); | |
91 | return; | |
92 | } | |
93 | ||
94 | if(!IsOperGeneral(source_p)) | |
95 | { | |
96 | /* seeing as this is going across servers, we should limit it */ | |
97 | if((last_used + ConfigFileEntry.pace_wait_simple) > rb_current_time() || !ratelimit_client(source_p, 2)) | |
98 | { | |
99 | sendto_one(source_p, form_str(RPL_LOAD2HI), | |
100 | me.name, source_p->name, "WHOIS"); | |
101 | sendto_one_numeric(source_p, RPL_ENDOFWHOIS, | |
102 | form_str(RPL_ENDOFWHOIS), parv[2]); | |
103 | return; | |
104 | } | |
105 | else | |
106 | last_used = rb_current_time(); | |
107 | } | |
108 | ||
109 | if(hunt_server(client_p, source_p, ":%s WHOIS %s :%s", 1, parc, parv) != | |
110 | HUNTED_ISME) | |
111 | return; | |
112 | ||
113 | parv[1] = parv[2]; | |
114 | ||
115 | } | |
116 | do_whois(client_p, source_p, parc, parv); | |
117 | } | |
118 | ||
119 | /* | |
120 | * ms_whois | |
121 | * parv[1] = server to reply | |
122 | * parv[2] = nickname to whois | |
123 | */ | |
124 | static void | |
125 | ms_whois(struct MsgBuf *msgbuf_p, struct Client *client_p, struct Client *source_p, int parc, const char *parv[]) | |
126 | { | |
127 | struct Client *target_p; | |
128 | ||
129 | /* note: early versions of ratbox allowed users to issue a remote | |
130 | * whois with a blank parv[2], so we cannot treat it as a protocol | |
131 | * violation. --anfl | |
132 | */ | |
133 | if(parc < 3 || EmptyString(parv[2])) | |
134 | { | |
135 | sendto_one(source_p, form_str(ERR_NONICKNAMEGIVEN), | |
136 | me.name, source_p->name); | |
137 | return; | |
138 | } | |
139 | ||
140 | /* check if parv[1] exists */ | |
141 | if((target_p = find_client(parv[1])) == NULL) | |
142 | { | |
143 | sendto_one_numeric(source_p, ERR_NOSUCHSERVER, | |
144 | form_str(ERR_NOSUCHSERVER), | |
145 | IsDigit(parv[1][0]) ? "*" : parv[1]); | |
146 | return; | |
147 | } | |
148 | ||
149 | /* if parv[1] isnt my client, or me, someone else is supposed | |
150 | * to be handling the request.. so send it to them | |
151 | */ | |
152 | if(!MyClient(target_p) && !IsMe(target_p)) | |
153 | { | |
154 | sendto_one(target_p, ":%s WHOIS %s :%s", | |
155 | get_id(source_p, target_p), | |
156 | get_id(target_p, target_p), parv[2]); | |
157 | return; | |
158 | } | |
159 | ||
160 | /* ok, the target is either us, or a client on our server, so perform the whois | |
161 | * but first, parv[1] == server to perform the whois on, parv[2] == person | |
162 | * to whois, so make parv[1] = parv[2] so do_whois is ok -- fl_ | |
163 | */ | |
164 | parv[1] = parv[2]; | |
165 | do_whois(client_p, source_p, parc, parv); | |
166 | } | |
167 | ||
168 | /* do_whois | |
169 | * | |
170 | * inputs - pointer to | |
171 | * output - | |
172 | * side effects - | |
173 | */ | |
174 | static void | |
175 | do_whois(struct Client *client_p, struct Client *source_p, int parc, const char *parv[]) | |
176 | { | |
177 | struct Client *target_p; | |
178 | char *nick; | |
179 | char *p = NULL; | |
180 | int operspy = 0; | |
181 | ||
182 | nick = LOCAL_COPY(parv[1]); | |
183 | if((p = strchr(nick, ','))) | |
184 | *p = '\0'; | |
185 | ||
186 | if(IsOperSpy(source_p) && *nick == '!') | |
187 | { | |
188 | operspy = 1; | |
189 | nick++; | |
190 | } | |
191 | ||
192 | target_p = find_named_person(nick); | |
193 | if(target_p != NULL) | |
194 | { | |
195 | if(operspy) | |
196 | { | |
197 | char buffer[BUFSIZE]; | |
198 | ||
199 | snprintf(buffer, sizeof(buffer), "%s!%s@%s %s", | |
200 | target_p->name, target_p->username, | |
201 | target_p->host, target_p->servptr->name); | |
202 | report_operspy(source_p, "WHOIS", buffer); | |
203 | } | |
204 | ||
205 | single_whois(source_p, target_p, operspy); | |
206 | } | |
207 | else | |
208 | sendto_one_numeric(source_p, ERR_NOSUCHNICK, | |
209 | form_str(ERR_NOSUCHNICK), | |
210 | nick); | |
211 | ||
212 | sendto_one_numeric(source_p, RPL_ENDOFWHOIS, | |
213 | form_str(RPL_ENDOFWHOIS), parv[1]); | |
214 | } | |
215 | ||
216 | /* | |
217 | * single_whois() | |
218 | * | |
219 | * Inputs - source_p client to report to | |
220 | * - target_p client to report on | |
221 | * Output - if found return 1 | |
222 | * Side Effects - do a single whois on given client | |
223 | * writing results to source_p | |
224 | */ | |
225 | static void | |
226 | single_whois(struct Client *source_p, struct Client *target_p, int operspy) | |
227 | { | |
228 | char buf[BUFSIZE]; | |
229 | hook_data_client hdata; | |
230 | struct sockaddr_in ip4; | |
231 | ||
232 | if(target_p->user == NULL) | |
233 | { | |
234 | s_assert(0); | |
235 | return; | |
236 | } | |
237 | ||
238 | sendto_one_numeric(source_p, RPL_WHOISUSER, form_str(RPL_WHOISUSER), | |
239 | target_p->name, target_p->username, | |
240 | target_p->host, target_p->info); | |
241 | ||
242 | send_multiline_init(source_p, " ", form_str(RPL_WHOISCHANNELS), | |
243 | get_id(&me, source_p), get_id(source_p, source_p), | |
244 | target_p->name); | |
245 | ||
246 | /* Make sure it won't overflow when sending it to the client | |
247 | * in full names; note that serverhiding may require more space | |
248 | * for a different server name (not done here) -- jilles | |
249 | */ | |
250 | send_multiline_remote_pad(source_p, &me); | |
251 | send_multiline_remote_pad(source_p, source_p); | |
252 | ||
253 | hdata.client = source_p; | |
254 | hdata.target = target_p; | |
255 | ||
256 | if (!IsService(target_p)) | |
257 | { | |
258 | hook_data_channel_visibility hdata_vis; | |
259 | rb_dlink_node *ps, *pt; | |
260 | struct Channel *chptr; | |
261 | struct membership *ms, *mt; | |
262 | ||
263 | hdata_vis.client = source_p; | |
264 | hdata_vis.target = target_p; | |
265 | ||
266 | ITER_COMM_CHANNELS(ps, pt, source_p->user->channel.head, target_p->user->channel.head, ms, mt, chptr) | |
267 | { | |
268 | if (mt == NULL) | |
269 | continue; | |
270 | ||
271 | hdata_vis.chptr = chptr; | |
272 | hdata_vis.clientms = ms; | |
273 | hdata_vis.targetms = mt; | |
274 | hdata_vis.approved = ms != NULL || PubChannel(chptr); | |
275 | ||
276 | call_hook(doing_whois_channel_visibility_hook, &hdata_vis); | |
277 | ||
278 | if(hdata_vis.approved || operspy) | |
279 | { | |
280 | send_multiline_item(source_p, "%s%s%s", | |
281 | hdata_vis.approved ? "" : "!", | |
282 | find_channel_status(mt, 1), | |
283 | chptr->chname); | |
284 | } | |
285 | } | |
286 | } | |
287 | ||
288 | send_multiline_fini(source_p, NULL); | |
289 | ||
290 | sendto_one_numeric(source_p, RPL_WHOISSERVER, form_str(RPL_WHOISSERVER), | |
291 | target_p->name, target_p->servptr->name, | |
292 | target_p->servptr->info); | |
293 | ||
294 | if(target_p->user->away) | |
295 | sendto_one_numeric(source_p, RPL_AWAY, form_str(RPL_AWAY), | |
296 | target_p->name, target_p->user->away); | |
297 | ||
298 | char *s = NULL; | |
299 | if (IsService(target_p)) | |
300 | { | |
301 | s = ConfigFileEntry.servicestring; | |
302 | } | |
303 | if (!EmptyString(target_p->user->opername) && IsOper(target_p)) | |
304 | { | |
305 | if (target_p == source_p || HasPrivilege(source_p, "oper:privs")) | |
306 | { | |
307 | const char *privset = "(missing)"; | |
308 | if (target_p->user->privset != NULL) | |
309 | privset = target_p->user->privset->name; | |
310 | snprintf(buf, sizeof buf, "is opered as %s, privset %s", target_p->user->opername, privset); | |
311 | s = buf; | |
312 | } | |
313 | else if (IsOper(source_p) && SeesOper(target_p, source_p)) | |
314 | { | |
315 | snprintf(buf, sizeof buf, "is opered as %s", target_p->user->opername); | |
316 | s = buf; | |
317 | } | |
318 | else if (!ConfigFileEntry.hide_opers_in_whois && SeesOper(target_p, source_p)) | |
319 | { | |
320 | s = IsAdmin(target_p) ? GlobalSetOptions.adminstring : | |
321 | GlobalSetOptions.operstring; | |
322 | } | |
323 | } | |
324 | if (s != NULL) | |
325 | { | |
326 | sendto_one_numeric(source_p, RPL_WHOISOPERATOR, form_str(RPL_WHOISOPERATOR), | |
327 | target_p->name, s); | |
328 | } | |
329 | ||
330 | if(IsSecureClient(target_p)) | |
331 | { | |
332 | char cbuf[256] = "is using a secure connection"; | |
333 | ||
334 | if (MyClient(target_p) && target_p->localClient->cipher_string != NULL && | |
335 | (!ConfigFileEntry.tls_ciphers_oper_only || source_p == target_p || IsOper(source_p))) | |
336 | rb_snprintf_append(cbuf, sizeof(cbuf), " [%s]", target_p->localClient->cipher_string); | |
337 | ||
338 | sendto_one_numeric(source_p, RPL_WHOISSECURE, form_str(RPL_WHOISSECURE), | |
339 | target_p->name, cbuf); | |
340 | if((source_p == target_p || IsOperGeneral(source_p)) && | |
341 | target_p->certfp != NULL) | |
342 | sendto_one_numeric(source_p, RPL_WHOISCERTFP, | |
343 | form_str(RPL_WHOISCERTFP), | |
344 | target_p->name, target_p->certfp); | |
345 | } | |
346 | ||
347 | if(MyClient(target_p)) | |
348 | { | |
349 | if (IsDynSpoof(target_p) && (HasPrivilege(source_p, "auspex:hostname") || source_p == target_p)) | |
350 | { | |
351 | /* trick here: show a nonoper their own IP if | |
352 | * dynamic spoofed but not if auth{} spoofed | |
353 | * -- jilles */ | |
354 | ClearDynSpoof(target_p); | |
355 | sendto_one_numeric(source_p, RPL_WHOISHOST, | |
356 | form_str(RPL_WHOISHOST), | |
357 | target_p->name, target_p->orighost, | |
358 | show_ip(source_p, target_p) ? target_p->sockhost : "255.255.255.255"); | |
359 | SetDynSpoof(target_p); | |
360 | } | |
361 | else if(ConfigFileEntry.use_whois_actually && show_ip(source_p, target_p)) | |
362 | sendto_one_numeric(source_p, RPL_WHOISACTUALLY, | |
363 | form_str(RPL_WHOISACTUALLY), | |
364 | target_p->name, target_p->sockhost); | |
365 | ||
366 | if (GET_SS_FAMILY(&target_p->localClient->ip) == AF_INET6 && | |
367 | (show_ip(source_p, target_p) || | |
368 | (source_p == target_p && !IsIPSpoof(target_p))) && | |
369 | rb_ipv4_from_ipv6((struct sockaddr_in6 *)&target_p->localClient->ip, &ip4)) | |
370 | { | |
371 | rb_inet_ntop_sock((struct sockaddr *)&ip4, | |
372 | buf, sizeof buf); | |
373 | sendto_one_numeric(source_p, RPL_WHOISSPECIAL, | |
374 | "%s :Underlying IPv4 is %s", | |
375 | target_p->name, buf); | |
376 | } | |
377 | ||
378 | /* fire the doing_whois_show_idle hook to allow modules to tell us whether to show the idle time */ | |
379 | hook_data_client_approval hdata_showidle; | |
380 | ||
381 | hdata_showidle.client = source_p; | |
382 | hdata_showidle.target = target_p; | |
383 | hdata_showidle.approved = WHOIS_IDLE_SHOW; | |
384 | ||
385 | call_hook(doing_whois_show_idle_hook, &hdata_showidle); | |
386 | ||
387 | sendto_one_numeric(source_p, RPL_WHOISIDLE, form_str(RPL_WHOISIDLE), | |
388 | target_p->name, | |
389 | hdata_showidle.approved != WHOIS_IDLE_HIDE ? (long)(rb_current_time() - target_p->localClient->last) : 0, | |
390 | (unsigned long)target_p->localClient->firsttime); | |
391 | ||
392 | if (hdata_showidle.approved != WHOIS_IDLE_SHOW) | |
393 | { | |
394 | if (target_p->umodes & user_modes['I']) | |
395 | { | |
396 | if (hdata_showidle.approved == WHOIS_IDLE_HIDE) | |
397 | /* if the target has hidden their idle time, notify the source */ | |
398 | sendto_one_numeric(source_p, RPL_WHOISSPECIAL, form_str(RPL_WHOISSPECIAL), target_p->name, "is hiding their idle time"); | |
399 | else | |
400 | /* if the target has hidden their idle time, notify the source */ | |
401 | sendto_one_numeric(source_p, RPL_WHOISSPECIAL, form_str(RPL_WHOISSPECIAL), target_p->name, "is hiding their idle time, but you have auspex"); | |
402 | } | |
403 | else if (hdata_showidle.approved == WHOIS_IDLE_HIDE) | |
404 | /* if the source has hidden their idle time, notify the source that they can't view others' idle times either */ | |
405 | sendto_one_numeric(source_p, RPL_WHOISSPECIAL, form_str(RPL_WHOISSPECIAL), target_p->name, "has a hidden idle time because your own idle time is hidden"); | |
406 | else | |
407 | /* client has auspex to be able to see idle time, but make sure they know that's why they're seeing it */ | |
408 | sendto_one_numeric(source_p, RPL_WHOISSPECIAL, form_str(RPL_WHOISSPECIAL), target_p->name, | |
409 | "has a hidden idle time because your own idle time is hidden, but you have auspex"); | |
410 | } | |
411 | } | |
412 | else | |
413 | { | |
414 | if (IsDynSpoof(target_p) && (HasPrivilege(source_p, "auspex:hostname") || source_p == target_p)) | |
415 | { | |
416 | ClearDynSpoof(target_p); | |
417 | sendto_one_numeric(source_p, RPL_WHOISHOST, | |
418 | form_str(RPL_WHOISHOST), | |
419 | target_p->name, target_p->orighost, | |
420 | show_ip(source_p, target_p) && !EmptyString(target_p->sockhost) && strcmp(target_p->sockhost, "0")? target_p->sockhost : "255.255.255.255"); | |
421 | SetDynSpoof(target_p); | |
422 | } | |
423 | else if(ConfigFileEntry.use_whois_actually && show_ip(source_p, target_p) && | |
424 | !EmptyString(target_p->sockhost) && strcmp(target_p->sockhost, "0")) | |
425 | { | |
426 | sendto_one_numeric(source_p, RPL_WHOISACTUALLY, | |
427 | form_str(RPL_WHOISACTUALLY), | |
428 | target_p->name, target_p->sockhost); | |
429 | ||
430 | } | |
431 | } | |
432 | ||
433 | /* doing_whois_hook must only be called for local clients, | |
434 | * doing_whois_global_hook must only be called for local targets | |
435 | */ | |
436 | /* it is important that these are called *before* RPL_ENDOFWHOIS is | |
437 | * sent, services compatibility code depends on it. --anfl | |
438 | */ | |
439 | if(MyClient(source_p)) | |
440 | call_hook(doing_whois_hook, &hdata); | |
441 | else | |
442 | call_hook(doing_whois_global_hook, &hdata); | |
443 | } |