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212380e3 AC |
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 | * | |
f7eac53d | 24 | * $Id: m_whois.c 3536 2007-07-14 21:50:21Z jilles $ |
212380e3 AC |
25 | */ |
26 | ||
27 | #include "stdinc.h" | |
212380e3 AC |
28 | #include "common.h" |
29 | #include "client.h" | |
30 | #include "hash.h" | |
31 | #include "channel.h" | |
32 | #include "hash.h" | |
33 | #include "ircd.h" | |
34 | #include "numeric.h" | |
35 | #include "s_conf.h" | |
36 | #include "s_serv.h" | |
37 | #include "send.h" | |
4562c604 | 38 | #include "match.h" |
212380e3 | 39 | #include "s_conf.h" |
4016731b | 40 | #include "logger.h" |
212380e3 AC |
41 | #include "msg.h" |
42 | #include "parse.h" | |
43 | #include "modules.h" | |
44 | #include "hook.h" | |
45 | #include "s_newconf.h" | |
ae52fe0f | 46 | #include "ipv4_from_ipv6.h" |
7e132ff0 | 47 | #include "ratelimit.h" |
77d3d2db | 48 | #include "s_assert.h" |
212380e3 AC |
49 | |
50 | static void do_whois(struct Client *client_p, struct Client *source_p, int parc, const char *parv[]); | |
51 | static void single_whois(struct Client *source_p, struct Client *target_p, int operspy); | |
52 | ||
53 | static int m_whois(struct Client *, struct Client *, int, const char **); | |
54 | static int ms_whois(struct Client *, struct Client *, int, const char **); | |
55 | ||
56 | struct Message whois_msgtab = { | |
57 | "WHOIS", 0, 0, 0, MFLG_SLOW, | |
58 | {mg_unreg, {m_whois, 2}, {ms_whois, 2}, mg_ignore, mg_ignore, {m_whois, 2}} | |
59 | }; | |
60 | ||
61 | int doing_whois_hook; | |
62 | int doing_whois_global_hook; | |
9e07c8f7 | 63 | int doing_whois_channel_visibility_hook; |
212380e3 AC |
64 | |
65 | mapi_clist_av1 whois_clist[] = { &whois_msgtab, NULL }; | |
66 | mapi_hlist_av1 whois_hlist[] = { | |
9e07c8f7 AC |
67 | { "doing_whois", &doing_whois_hook }, |
68 | { "doing_whois_global", &doing_whois_global_hook }, | |
69 | { "doing_whois_channel_visibility", &doing_whois_channel_visibility_hook }, | |
212380e3 AC |
70 | { NULL, NULL } |
71 | }; | |
72 | ||
f7eac53d | 73 | DECLARE_MODULE_AV1(whois, NULL, NULL, whois_clist, whois_hlist, NULL, "$Revision: 3536 $"); |
212380e3 AC |
74 | |
75 | /* | |
76 | * m_whois | |
212380e3 AC |
77 | * parv[1] = nickname masklist |
78 | */ | |
79 | static int | |
80 | m_whois(struct Client *client_p, struct Client *source_p, int parc, const char *parv[]) | |
81 | { | |
82 | static time_t last_used = 0; | |
83 | ||
84 | if(parc > 2) | |
85 | { | |
86 | if(EmptyString(parv[2])) | |
87 | { | |
88 | sendto_one(source_p, form_str(ERR_NONICKNAMEGIVEN), | |
89 | me.name, source_p->name); | |
90 | return 0; | |
91 | } | |
92 | ||
93 | if(!IsOper(source_p)) | |
94 | { | |
95 | /* seeing as this is going across servers, we should limit it */ | |
7e132ff0 | 96 | if((last_used + ConfigFileEntry.pace_wait_simple) > rb_current_time() || !ratelimit_client(source_p, 2)) |
212380e3 AC |
97 | { |
98 | sendto_one(source_p, form_str(RPL_LOAD2HI), | |
99 | me.name, source_p->name, "WHOIS"); | |
55abcbb2 | 100 | sendto_one_numeric(source_p, RPL_ENDOFWHOIS, |
f7eac53d | 101 | form_str(RPL_ENDOFWHOIS), parv[2]); |
212380e3 AC |
102 | return 0; |
103 | } | |
104 | else | |
e3354945 | 105 | last_used = rb_current_time(); |
212380e3 AC |
106 | } |
107 | ||
108 | if(hunt_server(client_p, source_p, ":%s WHOIS %s :%s", 1, parc, parv) != | |
109 | HUNTED_ISME) | |
110 | return 0; | |
111 | ||
112 | parv[1] = parv[2]; | |
113 | ||
114 | } | |
115 | do_whois(client_p, source_p, parc, parv); | |
116 | ||
117 | return 0; | |
118 | } | |
119 | ||
120 | /* | |
121 | * ms_whois | |
212380e3 AC |
122 | * parv[1] = server to reply |
123 | * parv[2] = nickname to whois | |
124 | */ | |
125 | static int | |
126 | ms_whois(struct Client *client_p, struct Client *source_p, int parc, const char *parv[]) | |
127 | { | |
128 | struct Client *target_p; | |
129 | ||
130 | /* note: early versions of ratbox allowed users to issue a remote | |
131 | * whois with a blank parv[2], so we cannot treat it as a protocol | |
132 | * violation. --anfl | |
133 | */ | |
134 | if(parc < 3 || EmptyString(parv[2])) | |
135 | { | |
136 | sendto_one(source_p, form_str(ERR_NONICKNAMEGIVEN), | |
137 | me.name, source_p->name); | |
138 | return 0; | |
139 | } | |
140 | ||
141 | /* check if parv[1] exists */ | |
142 | if((target_p = find_client(parv[1])) == NULL) | |
143 | { | |
144 | sendto_one_numeric(source_p, ERR_NOSUCHSERVER, | |
55abcbb2 | 145 | form_str(ERR_NOSUCHSERVER), |
212380e3 AC |
146 | IsDigit(parv[1][0]) ? "*" : parv[1]); |
147 | return 0; | |
148 | } | |
149 | ||
150 | /* if parv[1] isnt my client, or me, someone else is supposed | |
55abcbb2 | 151 | * to be handling the request.. so send it to them |
212380e3 AC |
152 | */ |
153 | if(!MyClient(target_p) && !IsMe(target_p)) | |
154 | { | |
55abcbb2 KB |
155 | sendto_one(target_p, ":%s WHOIS %s :%s", |
156 | get_id(source_p, target_p), | |
212380e3 AC |
157 | get_id(target_p, target_p), parv[2]); |
158 | return 0; | |
159 | } | |
160 | ||
161 | /* ok, the target is either us, or a client on our server, so perform the whois | |
162 | * but first, parv[1] == server to perform the whois on, parv[2] == person | |
163 | * to whois, so make parv[1] = parv[2] so do_whois is ok -- fl_ | |
164 | */ | |
165 | parv[1] = parv[2]; | |
166 | do_whois(client_p, source_p, parc, parv); | |
167 | ||
168 | return 0; | |
169 | } | |
170 | ||
171 | /* do_whois | |
172 | * | |
55abcbb2 KB |
173 | * inputs - pointer to |
174 | * output - | |
212380e3 AC |
175 | * side effects - |
176 | */ | |
177 | static void | |
178 | do_whois(struct Client *client_p, struct Client *source_p, int parc, const char *parv[]) | |
179 | { | |
180 | struct Client *target_p; | |
181 | char *nick; | |
182 | char *p = NULL; | |
183 | int operspy = 0; | |
184 | ||
185 | nick = LOCAL_COPY(parv[1]); | |
186 | if((p = strchr(nick, ','))) | |
187 | *p = '\0'; | |
188 | ||
189 | if(IsOperSpy(source_p) && *nick == '!') | |
190 | { | |
191 | operspy = 1; | |
192 | nick++; | |
193 | } | |
194 | ||
2ebef8d9 | 195 | target_p = find_named_person(nick); |
212380e3 AC |
196 | if(target_p != NULL) |
197 | { | |
198 | if(operspy) | |
199 | { | |
200 | char buffer[BUFSIZE]; | |
201 | ||
c2f73e5d | 202 | rb_snprintf(buffer, sizeof(buffer), "%s!%s@%s %s", |
212380e3 | 203 | target_p->name, target_p->username, |
c88cdb00 | 204 | target_p->host, target_p->servptr->name); |
212380e3 AC |
205 | report_operspy(source_p, "WHOIS", buffer); |
206 | } | |
207 | ||
208 | single_whois(source_p, target_p, operspy); | |
209 | } | |
210 | else | |
211 | sendto_one_numeric(source_p, ERR_NOSUCHNICK, | |
55abcbb2 | 212 | form_str(ERR_NOSUCHNICK), |
8a1e143f | 213 | nick); |
212380e3 | 214 | |
55abcbb2 | 215 | sendto_one_numeric(source_p, RPL_ENDOFWHOIS, |
212380e3 AC |
216 | form_str(RPL_ENDOFWHOIS), parv[1]); |
217 | return; | |
218 | } | |
219 | ||
220 | /* | |
221 | * single_whois() | |
222 | * | |
223 | * Inputs - source_p client to report to | |
224 | * - target_p client to report on | |
225 | * Output - if found return 1 | |
226 | * Side Effects - do a single whois on given client | |
227 | * writing results to source_p | |
228 | */ | |
229 | static void | |
230 | single_whois(struct Client *source_p, struct Client *target_p, int operspy) | |
231 | { | |
232 | char buf[BUFSIZE]; | |
5b96d9a6 | 233 | rb_dlink_node *ptr; |
212380e3 AC |
234 | struct membership *msptr; |
235 | struct Channel *chptr; | |
236 | int cur_len = 0; | |
237 | int mlen; | |
238 | char *t; | |
239 | int tlen; | |
240 | hook_data_client hdata; | |
212380e3 | 241 | int extra_space = 0; |
ae52fe0f JT |
242 | #ifdef RB_IPV6 |
243 | struct sockaddr_in ip4; | |
244 | #endif | |
212380e3 | 245 | |
212380e3 AC |
246 | if(target_p->user == NULL) |
247 | { | |
248 | s_assert(0); | |
249 | return; | |
250 | } | |
251 | ||
212380e3 | 252 | sendto_one_numeric(source_p, RPL_WHOISUSER, form_str(RPL_WHOISUSER), |
55abcbb2 | 253 | target_p->name, target_p->username, |
212380e3 AC |
254 | target_p->host, target_p->info); |
255 | ||
55abcbb2 KB |
256 | cur_len = mlen = rb_sprintf(buf, form_str(RPL_WHOISCHANNELS), |
257 | get_id(&me, source_p), get_id(source_p, source_p), | |
212380e3 AC |
258 | target_p->name); |
259 | ||
260 | /* Make sure it won't overflow when sending it to the client | |
261 | * in full names; note that serverhiding may require more space | |
262 | * for a different server name (not done here) -- jilles | |
263 | */ | |
264 | if (!MyConnect(source_p)) | |
265 | { | |
266 | extra_space = strlen(source_p->name) - 9; | |
267 | if (extra_space < 0) | |
268 | extra_space = 0; | |
269 | extra_space += strlen(me.name) - 2; /* make sure >= 0 */ | |
270 | cur_len += extra_space; | |
271 | } | |
272 | ||
273 | t = buf + mlen; | |
274 | ||
9e07c8f7 AC |
275 | hdata.client = source_p; |
276 | hdata.target = target_p; | |
277 | ||
04513cff | 278 | if (!IsService(target_p)) |
212380e3 | 279 | { |
5b96d9a6 | 280 | RB_DLINK_FOREACH(ptr, target_p->user->channel.head) |
04513cff JT |
281 | { |
282 | msptr = ptr->data; | |
283 | chptr = msptr->chptr; | |
212380e3 | 284 | |
9e07c8f7 AC |
285 | hdata.chptr = chptr; |
286 | ||
287 | hdata.approved = ShowChannel(source_p, chptr); | |
288 | call_hook(doing_whois_channel_visibility_hook, &hdata); | |
212380e3 | 289 | |
9e07c8f7 | 290 | if(hdata.approved || operspy) |
212380e3 | 291 | { |
04513cff JT |
292 | if((cur_len + strlen(chptr->chname) + 3) > (BUFSIZE - 5)) |
293 | { | |
294 | sendto_one(source_p, "%s", buf); | |
295 | cur_len = mlen + extra_space; | |
296 | t = buf + mlen; | |
297 | } | |
298 | ||
7cdb0a09 | 299 | tlen = rb_sprintf(t, "%s%s%s ", |
9e07c8f7 | 300 | hdata.approved ? "" : "!", |
04513cff JT |
301 | find_channel_status(msptr, 1), |
302 | chptr->chname); | |
303 | t += tlen; | |
304 | cur_len += tlen; | |
212380e3 | 305 | } |
212380e3 AC |
306 | } |
307 | } | |
308 | ||
309 | if(cur_len > mlen + extra_space) | |
310 | sendto_one(source_p, "%s", buf); | |
311 | ||
312 | sendto_one_numeric(source_p, RPL_WHOISSERVER, form_str(RPL_WHOISSERVER), | |
c88cdb00 | 313 | target_p->name, target_p->servptr->name, |
8170176a | 314 | target_p->servptr->info); |
212380e3 | 315 | |
c127b45b | 316 | if(target_p->user->away) |
212380e3 | 317 | sendto_one_numeric(source_p, RPL_AWAY, form_str(RPL_AWAY), |
c127b45b | 318 | target_p->name, target_p->user->away); |
212380e3 AC |
319 | |
320 | if(IsOper(target_p)) | |
321 | { | |
322 | sendto_one_numeric(source_p, RPL_WHOISOPERATOR, form_str(RPL_WHOISOPERATOR), | |
323 | target_p->name, | |
324 | IsService(target_p) ? ConfigFileEntry.servicestring : | |
325 | (IsAdmin(target_p) ? GlobalSetOptions.adminstring : | |
326 | GlobalSetOptions.operstring)); | |
327 | } | |
328 | ||
72ad5c04 | 329 | if(MyClient(target_p) && !EmptyString(target_p->localClient->opername) && |
4d38dd60 | 330 | (IsOper(source_p) || (source_p == target_p))) |
72ad5c04 AC |
331 | { |
332 | char buf[512]; | |
e00552d5 | 333 | rb_snprintf(buf, sizeof(buf), "is opered as %s, privset %s", |
72ad5c04 AC |
334 | target_p->localClient->opername, target_p->localClient->privset->name); |
335 | sendto_one_numeric(source_p, RPL_WHOISSPECIAL, form_str(RPL_WHOISSPECIAL), | |
336 | target_p->name, buf); | |
337 | } | |
338 | ||
af7aaa84 | 339 | if(IsSSLClient(target_p)) |
427a8d5d AC |
340 | { |
341 | char cbuf[256] = "is using a secure connection"; | |
342 | ||
343 | if (MyClient(target_p) && target_p->localClient->cipher_string != NULL) | |
344 | rb_snprintf_append(cbuf, sizeof(cbuf), " [%s]", target_p->localClient->cipher_string); | |
345 | ||
af7aaa84 | 346 | sendto_one_numeric(source_p, RPL_WHOISSECURE, form_str(RPL_WHOISSECURE), |
427a8d5d AC |
347 | target_p->name, cbuf); |
348 | if((source_p == target_p || IsOper(source_p)) && | |
349 | target_p->certfp != NULL) | |
350 | sendto_one_numeric(source_p, RPL_WHOISCERTFP, | |
351 | form_str(RPL_WHOISCERTFP), | |
352 | target_p->name, target_p->certfp); | |
353 | } | |
af7aaa84 | 354 | |
212380e3 AC |
355 | if(MyClient(target_p)) |
356 | { | |
357 | if (IsDynSpoof(target_p) && (IsOper(source_p) || source_p == target_p)) | |
358 | { | |
359 | /* trick here: show a nonoper their own IP if | |
360 | * dynamic spoofed but not if auth{} spoofed | |
361 | * -- jilles */ | |
362 | ClearDynSpoof(target_p); | |
363 | sendto_one_numeric(source_p, RPL_WHOISHOST, | |
364 | form_str(RPL_WHOISHOST), | |
365 | target_p->name, target_p->orighost, | |
366 | show_ip(source_p, target_p) ? target_p->sockhost : "255.255.255.255"); | |
367 | SetDynSpoof(target_p); | |
368 | } | |
369 | else if(ConfigFileEntry.use_whois_actually && show_ip(source_p, target_p)) | |
370 | sendto_one_numeric(source_p, RPL_WHOISACTUALLY, | |
371 | form_str(RPL_WHOISACTUALLY), | |
372 | target_p->name, target_p->sockhost); | |
373 | ||
ae52fe0f JT |
374 | #ifdef RB_IPV6 |
375 | if (target_p->localClient->ip.ss_family == AF_INET6 && | |
376 | (show_ip(source_p, target_p) || | |
377 | (source_p == target_p && !IsIPSpoof(target_p))) && | |
378 | ipv4_from_ipv6((struct sockaddr_in6 *)&target_p->localClient->ip, &ip4)) | |
379 | { | |
380 | rb_inet_ntop_sock((struct sockaddr *)&ip4, | |
381 | buf, sizeof buf); | |
382 | sendto_one_numeric(source_p, RPL_WHOISTEXT, | |
383 | "%s :Underlying IPv4 is %s", | |
384 | target_p->name, buf); | |
385 | } | |
386 | #endif /* RB_IPV6 */ | |
387 | ||
212380e3 | 388 | sendto_one_numeric(source_p, RPL_WHOISIDLE, form_str(RPL_WHOISIDLE), |
55abcbb2 KB |
389 | target_p->name, |
390 | (long)(rb_current_time() - target_p->localClient->last), | |
77910830 | 391 | (unsigned long)target_p->localClient->firsttime); |
212380e3 AC |
392 | } |
393 | else | |
394 | { | |
395 | if (IsDynSpoof(target_p) && (IsOper(source_p) || source_p == target_p)) | |
396 | { | |
397 | ClearDynSpoof(target_p); | |
398 | sendto_one_numeric(source_p, RPL_WHOISHOST, | |
399 | form_str(RPL_WHOISHOST), | |
400 | target_p->name, target_p->orighost, | |
401 | show_ip(source_p, target_p) && !EmptyString(target_p->sockhost) && strcmp(target_p->sockhost, "0")? target_p->sockhost : "255.255.255.255"); | |
402 | SetDynSpoof(target_p); | |
403 | } | |
404 | else if(ConfigFileEntry.use_whois_actually && show_ip(source_p, target_p) && | |
405 | !EmptyString(target_p->sockhost) && strcmp(target_p->sockhost, "0")) | |
406 | { | |
407 | sendto_one_numeric(source_p, RPL_WHOISACTUALLY, | |
408 | form_str(RPL_WHOISACTUALLY), | |
409 | target_p->name, target_p->sockhost); | |
55abcbb2 | 410 | |
212380e3 | 411 | } |
212380e3 AC |
412 | } |
413 | ||
212380e3 AC |
414 | /* doing_whois_hook must only be called for local clients, |
415 | * doing_whois_global_hook must only be called for local targets | |
416 | */ | |
417 | /* it is important that these are called *before* RPL_ENDOFWHOIS is | |
418 | * sent, services compatibility code depends on it. --anfl | |
419 | */ | |
420 | if(MyClient(source_p)) | |
421 | call_hook(doing_whois_hook, &hdata); | |
422 | else | |
423 | call_hook(doing_whois_global_hook, &hdata); | |
424 | ||
425 | return; | |
426 | } | |
427 |