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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" |
212380e3 AC |
47 | |
48 | static void do_whois(struct Client *client_p, struct Client *source_p, int parc, const char *parv[]); | |
49 | static void single_whois(struct Client *source_p, struct Client *target_p, int operspy); | |
50 | ||
51 | static int m_whois(struct Client *, struct Client *, int, const char **); | |
52 | static int ms_whois(struct Client *, struct Client *, int, const char **); | |
53 | ||
54 | struct Message whois_msgtab = { | |
55 | "WHOIS", 0, 0, 0, MFLG_SLOW, | |
56 | {mg_unreg, {m_whois, 2}, {ms_whois, 2}, mg_ignore, mg_ignore, {m_whois, 2}} | |
57 | }; | |
58 | ||
59 | int doing_whois_hook; | |
60 | int doing_whois_global_hook; | |
61 | ||
62 | mapi_clist_av1 whois_clist[] = { &whois_msgtab, NULL }; | |
63 | mapi_hlist_av1 whois_hlist[] = { | |
64 | { "doing_whois", &doing_whois_hook }, | |
65 | { "doing_whois_global", &doing_whois_global_hook }, | |
66 | { NULL, NULL } | |
67 | }; | |
68 | ||
f7eac53d | 69 | DECLARE_MODULE_AV1(whois, NULL, NULL, whois_clist, whois_hlist, NULL, "$Revision: 3536 $"); |
212380e3 AC |
70 | |
71 | /* | |
72 | * m_whois | |
212380e3 AC |
73 | * parv[1] = nickname masklist |
74 | */ | |
75 | static int | |
76 | m_whois(struct Client *client_p, struct Client *source_p, int parc, const char *parv[]) | |
77 | { | |
78 | static time_t last_used = 0; | |
79 | ||
80 | if(parc > 2) | |
81 | { | |
82 | if(EmptyString(parv[2])) | |
83 | { | |
84 | sendto_one(source_p, form_str(ERR_NONICKNAMEGIVEN), | |
85 | me.name, source_p->name); | |
86 | return 0; | |
87 | } | |
88 | ||
89 | if(!IsOper(source_p)) | |
90 | { | |
91 | /* seeing as this is going across servers, we should limit it */ | |
e3354945 | 92 | if((last_used + ConfigFileEntry.pace_wait_simple) > rb_current_time()) |
212380e3 AC |
93 | { |
94 | sendto_one(source_p, form_str(RPL_LOAD2HI), | |
95 | me.name, source_p->name, "WHOIS"); | |
96 | sendto_one_numeric(source_p, RPL_ENDOFWHOIS, | |
f7eac53d | 97 | form_str(RPL_ENDOFWHOIS), parv[2]); |
212380e3 AC |
98 | return 0; |
99 | } | |
100 | else | |
e3354945 | 101 | last_used = rb_current_time(); |
212380e3 AC |
102 | } |
103 | ||
104 | if(hunt_server(client_p, source_p, ":%s WHOIS %s :%s", 1, parc, parv) != | |
105 | HUNTED_ISME) | |
106 | return 0; | |
107 | ||
108 | parv[1] = parv[2]; | |
109 | ||
110 | } | |
111 | do_whois(client_p, source_p, parc, parv); | |
112 | ||
113 | return 0; | |
114 | } | |
115 | ||
116 | /* | |
117 | * ms_whois | |
212380e3 AC |
118 | * parv[1] = server to reply |
119 | * parv[2] = nickname to whois | |
120 | */ | |
121 | static int | |
122 | ms_whois(struct Client *client_p, struct Client *source_p, int parc, const char *parv[]) | |
123 | { | |
124 | struct Client *target_p; | |
125 | ||
126 | /* note: early versions of ratbox allowed users to issue a remote | |
127 | * whois with a blank parv[2], so we cannot treat it as a protocol | |
128 | * violation. --anfl | |
129 | */ | |
130 | if(parc < 3 || EmptyString(parv[2])) | |
131 | { | |
132 | sendto_one(source_p, form_str(ERR_NONICKNAMEGIVEN), | |
133 | me.name, source_p->name); | |
134 | return 0; | |
135 | } | |
136 | ||
137 | /* check if parv[1] exists */ | |
138 | if((target_p = find_client(parv[1])) == NULL) | |
139 | { | |
140 | sendto_one_numeric(source_p, ERR_NOSUCHSERVER, | |
141 | form_str(ERR_NOSUCHSERVER), | |
142 | IsDigit(parv[1][0]) ? "*" : parv[1]); | |
143 | return 0; | |
144 | } | |
145 | ||
146 | /* if parv[1] isnt my client, or me, someone else is supposed | |
147 | * to be handling the request.. so send it to them | |
148 | */ | |
149 | if(!MyClient(target_p) && !IsMe(target_p)) | |
150 | { | |
151 | sendto_one(target_p, ":%s WHOIS %s :%s", | |
152 | get_id(source_p, target_p), | |
153 | get_id(target_p, target_p), parv[2]); | |
154 | return 0; | |
155 | } | |
156 | ||
157 | /* ok, the target is either us, or a client on our server, so perform the whois | |
158 | * but first, parv[1] == server to perform the whois on, parv[2] == person | |
159 | * to whois, so make parv[1] = parv[2] so do_whois is ok -- fl_ | |
160 | */ | |
161 | parv[1] = parv[2]; | |
162 | do_whois(client_p, source_p, parc, parv); | |
163 | ||
164 | return 0; | |
165 | } | |
166 | ||
167 | /* do_whois | |
168 | * | |
169 | * inputs - pointer to | |
170 | * output - | |
171 | * side effects - | |
172 | */ | |
173 | static void | |
174 | do_whois(struct Client *client_p, struct Client *source_p, int parc, const char *parv[]) | |
175 | { | |
176 | struct Client *target_p; | |
177 | char *nick; | |
178 | char *p = NULL; | |
179 | int operspy = 0; | |
180 | ||
181 | nick = LOCAL_COPY(parv[1]); | |
182 | if((p = strchr(nick, ','))) | |
183 | *p = '\0'; | |
184 | ||
185 | if(IsOperSpy(source_p) && *nick == '!') | |
186 | { | |
187 | operspy = 1; | |
188 | nick++; | |
189 | } | |
190 | ||
340a0ddd AC |
191 | if(MyClient(source_p)) |
192 | target_p = find_named_person(nick); | |
193 | else | |
c6d72037 | 194 | target_p = find_person(nick); |
212380e3 AC |
195 | |
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, | |
212 | form_str(ERR_NOSUCHNICK), | |
8a1e143f | 213 | nick); |
212380e3 AC |
214 | |
215 | sendto_one_numeric(source_p, RPL_ENDOFWHOIS, | |
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 AC |
241 | int visible; |
242 | int extra_space = 0; | |
ae52fe0f JT |
243 | #ifdef RB_IPV6 |
244 | struct sockaddr_in ip4; | |
245 | #endif | |
212380e3 | 246 | |
212380e3 AC |
247 | if(target_p->user == NULL) |
248 | { | |
249 | s_assert(0); | |
250 | return; | |
251 | } | |
252 | ||
212380e3 AC |
253 | sendto_one_numeric(source_p, RPL_WHOISUSER, form_str(RPL_WHOISUSER), |
254 | target_p->name, target_p->username, | |
255 | target_p->host, target_p->info); | |
256 | ||
7cdb0a09 | 257 | cur_len = mlen = rb_sprintf(buf, form_str(RPL_WHOISCHANNELS), |
212380e3 AC |
258 | get_id(&me, source_p), get_id(source_p, source_p), |
259 | target_p->name); | |
260 | ||
261 | /* Make sure it won't overflow when sending it to the client | |
262 | * in full names; note that serverhiding may require more space | |
263 | * for a different server name (not done here) -- jilles | |
264 | */ | |
265 | if (!MyConnect(source_p)) | |
266 | { | |
267 | extra_space = strlen(source_p->name) - 9; | |
268 | if (extra_space < 0) | |
269 | extra_space = 0; | |
270 | extra_space += strlen(me.name) - 2; /* make sure >= 0 */ | |
271 | cur_len += extra_space; | |
272 | } | |
273 | ||
274 | t = buf + mlen; | |
275 | ||
04513cff | 276 | if (!IsService(target_p)) |
212380e3 | 277 | { |
5b96d9a6 | 278 | RB_DLINK_FOREACH(ptr, target_p->user->channel.head) |
04513cff JT |
279 | { |
280 | msptr = ptr->data; | |
281 | chptr = msptr->chptr; | |
212380e3 | 282 | |
04513cff | 283 | visible = ShowChannel(source_p, chptr); |
212380e3 | 284 | |
04513cff | 285 | if(visible || operspy) |
212380e3 | 286 | { |
04513cff JT |
287 | if((cur_len + strlen(chptr->chname) + 3) > (BUFSIZE - 5)) |
288 | { | |
289 | sendto_one(source_p, "%s", buf); | |
290 | cur_len = mlen + extra_space; | |
291 | t = buf + mlen; | |
292 | } | |
293 | ||
7cdb0a09 | 294 | tlen = rb_sprintf(t, "%s%s%s ", |
04513cff JT |
295 | visible ? "" : "!", |
296 | find_channel_status(msptr, 1), | |
297 | chptr->chname); | |
298 | t += tlen; | |
299 | cur_len += tlen; | |
212380e3 | 300 | } |
212380e3 AC |
301 | } |
302 | } | |
303 | ||
304 | if(cur_len > mlen + extra_space) | |
305 | sendto_one(source_p, "%s", buf); | |
306 | ||
307 | sendto_one_numeric(source_p, RPL_WHOISSERVER, form_str(RPL_WHOISSERVER), | |
c88cdb00 | 308 | target_p->name, target_p->servptr->name, |
8170176a | 309 | target_p->servptr->info); |
212380e3 | 310 | |
c127b45b | 311 | if(target_p->user->away) |
212380e3 | 312 | sendto_one_numeric(source_p, RPL_AWAY, form_str(RPL_AWAY), |
c127b45b | 313 | target_p->name, target_p->user->away); |
212380e3 AC |
314 | |
315 | if(IsOper(target_p)) | |
316 | { | |
317 | sendto_one_numeric(source_p, RPL_WHOISOPERATOR, form_str(RPL_WHOISOPERATOR), | |
318 | target_p->name, | |
319 | IsService(target_p) ? ConfigFileEntry.servicestring : | |
320 | (IsAdmin(target_p) ? GlobalSetOptions.adminstring : | |
321 | GlobalSetOptions.operstring)); | |
322 | } | |
323 | ||
af7aaa84 AC |
324 | if(IsSSLClient(target_p)) |
325 | sendto_one_numeric(source_p, RPL_WHOISSECURE, form_str(RPL_WHOISSECURE), | |
326 | target_p->name); | |
8eda114a JT |
327 | if((source_p == target_p || IsOper(source_p)) && |
328 | target_p->certfp != NULL) | |
329 | sendto_one_numeric(source_p, RPL_WHOISCERTFP, | |
330 | form_str(RPL_WHOISCERTFP), | |
331 | target_p->name, target_p->certfp); | |
af7aaa84 | 332 | |
212380e3 AC |
333 | if(MyClient(target_p)) |
334 | { | |
335 | if (IsDynSpoof(target_p) && (IsOper(source_p) || source_p == target_p)) | |
336 | { | |
337 | /* trick here: show a nonoper their own IP if | |
338 | * dynamic spoofed but not if auth{} spoofed | |
339 | * -- jilles */ | |
340 | ClearDynSpoof(target_p); | |
341 | sendto_one_numeric(source_p, RPL_WHOISHOST, | |
342 | form_str(RPL_WHOISHOST), | |
343 | target_p->name, target_p->orighost, | |
344 | show_ip(source_p, target_p) ? target_p->sockhost : "255.255.255.255"); | |
345 | SetDynSpoof(target_p); | |
346 | } | |
347 | else if(ConfigFileEntry.use_whois_actually && show_ip(source_p, target_p)) | |
348 | sendto_one_numeric(source_p, RPL_WHOISACTUALLY, | |
349 | form_str(RPL_WHOISACTUALLY), | |
350 | target_p->name, target_p->sockhost); | |
351 | ||
ae52fe0f JT |
352 | #ifdef RB_IPV6 |
353 | if (target_p->localClient->ip.ss_family == AF_INET6 && | |
354 | (show_ip(source_p, target_p) || | |
355 | (source_p == target_p && !IsIPSpoof(target_p))) && | |
356 | ipv4_from_ipv6((struct sockaddr_in6 *)&target_p->localClient->ip, &ip4)) | |
357 | { | |
358 | rb_inet_ntop_sock((struct sockaddr *)&ip4, | |
359 | buf, sizeof buf); | |
360 | sendto_one_numeric(source_p, RPL_WHOISTEXT, | |
361 | "%s :Underlying IPv4 is %s", | |
362 | target_p->name, buf); | |
363 | } | |
364 | #endif /* RB_IPV6 */ | |
365 | ||
212380e3 AC |
366 | sendto_one_numeric(source_p, RPL_WHOISIDLE, form_str(RPL_WHOISIDLE), |
367 | target_p->name, | |
e3354945 | 368 | rb_current_time() - target_p->localClient->last, |
212380e3 AC |
369 | target_p->localClient->firsttime); |
370 | } | |
371 | else | |
372 | { | |
373 | if (IsDynSpoof(target_p) && (IsOper(source_p) || source_p == target_p)) | |
374 | { | |
375 | ClearDynSpoof(target_p); | |
376 | sendto_one_numeric(source_p, RPL_WHOISHOST, | |
377 | form_str(RPL_WHOISHOST), | |
378 | target_p->name, target_p->orighost, | |
379 | show_ip(source_p, target_p) && !EmptyString(target_p->sockhost) && strcmp(target_p->sockhost, "0")? target_p->sockhost : "255.255.255.255"); | |
380 | SetDynSpoof(target_p); | |
381 | } | |
382 | else if(ConfigFileEntry.use_whois_actually && show_ip(source_p, target_p) && | |
383 | !EmptyString(target_p->sockhost) && strcmp(target_p->sockhost, "0")) | |
384 | { | |
385 | sendto_one_numeric(source_p, RPL_WHOISACTUALLY, | |
386 | form_str(RPL_WHOISACTUALLY), | |
387 | target_p->name, target_p->sockhost); | |
388 | ||
389 | } | |
212380e3 AC |
390 | } |
391 | ||
392 | hdata.client = source_p; | |
393 | hdata.target = target_p; | |
394 | ||
395 | /* doing_whois_hook must only be called for local clients, | |
396 | * doing_whois_global_hook must only be called for local targets | |
397 | */ | |
398 | /* it is important that these are called *before* RPL_ENDOFWHOIS is | |
399 | * sent, services compatibility code depends on it. --anfl | |
400 | */ | |
401 | if(MyClient(source_p)) | |
402 | call_hook(doing_whois_hook, &hdata); | |
403 | else | |
404 | call_hook(doing_whois_global_hook, &hdata); | |
405 | ||
406 | return; | |
407 | } | |
408 |