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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 | |
212380e3 AC |
23 | */ |
24 | ||
25 | #include "stdinc.h" | |
212380e3 AC |
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_serv.h" | |
34 | #include "send.h" | |
4562c604 | 35 | #include "match.h" |
212380e3 | 36 | #include "s_conf.h" |
4016731b | 37 | #include "logger.h" |
212380e3 AC |
38 | #include "msg.h" |
39 | #include "parse.h" | |
40 | #include "modules.h" | |
41 | #include "hook.h" | |
42 | #include "s_newconf.h" | |
7e132ff0 | 43 | #include "ratelimit.h" |
77d3d2db | 44 | #include "s_assert.h" |
212380e3 | 45 | |
eeabf33a EM |
46 | static const char whois_desc[] = |
47 | "Provides the WHOIS command to display information about a user"; | |
48 | ||
212380e3 AC |
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 | ||
3c7d6fcc EM |
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 **); | |
212380e3 AC |
54 | |
55 | struct Message whois_msgtab = { | |
7baa37a9 | 56 | "WHOIS", 0, 0, 0, 0, |
212380e3 AC |
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; | |
9e07c8f7 | 62 | int doing_whois_channel_visibility_hook; |
212380e3 AC |
63 | |
64 | mapi_clist_av1 whois_clist[] = { &whois_msgtab, NULL }; | |
65 | mapi_hlist_av1 whois_hlist[] = { | |
9e07c8f7 AC |
66 | { "doing_whois", &doing_whois_hook }, |
67 | { "doing_whois_global", &doing_whois_global_hook }, | |
68 | { "doing_whois_channel_visibility", &doing_whois_channel_visibility_hook }, | |
212380e3 AC |
69 | { NULL, NULL } |
70 | }; | |
71 | ||
3bf449fe | 72 | DECLARE_MODULE_AV2(whois, NULL, NULL, whois_clist, whois_hlist, NULL, NULL, NULL, whois_desc); |
212380e3 AC |
73 | |
74 | /* | |
75 | * m_whois | |
212380e3 AC |
76 | * parv[1] = nickname masklist |
77 | */ | |
3c7d6fcc | 78 | static void |
428ca87b | 79 | m_whois(struct MsgBuf *msgbuf_p, struct Client *client_p, struct Client *source_p, int parc, const char *parv[]) |
212380e3 AC |
80 | { |
81 | static time_t last_used = 0; | |
82 | ||
83 | if(parc > 2) | |
84 | { | |
85 | if(EmptyString(parv[2])) | |
86 | { | |
87 | sendto_one(source_p, form_str(ERR_NONICKNAMEGIVEN), | |
88 | me.name, source_p->name); | |
3c7d6fcc | 89 | return; |
212380e3 AC |
90 | } |
91 | ||
92 | if(!IsOper(source_p)) | |
93 | { | |
94 | /* seeing as this is going across servers, we should limit it */ | |
7e132ff0 | 95 | if((last_used + ConfigFileEntry.pace_wait_simple) > rb_current_time() || !ratelimit_client(source_p, 2)) |
212380e3 AC |
96 | { |
97 | sendto_one(source_p, form_str(RPL_LOAD2HI), | |
98 | me.name, source_p->name, "WHOIS"); | |
55abcbb2 | 99 | sendto_one_numeric(source_p, RPL_ENDOFWHOIS, |
f7eac53d | 100 | form_str(RPL_ENDOFWHOIS), parv[2]); |
3c7d6fcc | 101 | return; |
212380e3 AC |
102 | } |
103 | else | |
e3354945 | 104 | last_used = rb_current_time(); |
212380e3 AC |
105 | } |
106 | ||
107 | if(hunt_server(client_p, source_p, ":%s WHOIS %s :%s", 1, parc, parv) != | |
108 | HUNTED_ISME) | |
3c7d6fcc | 109 | return; |
212380e3 AC |
110 | |
111 | parv[1] = parv[2]; | |
112 | ||
113 | } | |
114 | do_whois(client_p, source_p, parc, parv); | |
212380e3 AC |
115 | } |
116 | ||
117 | /* | |
118 | * ms_whois | |
212380e3 AC |
119 | * parv[1] = server to reply |
120 | * parv[2] = nickname to whois | |
121 | */ | |
3c7d6fcc | 122 | static void |
428ca87b | 123 | ms_whois(struct MsgBuf *msgbuf_p, struct Client *client_p, struct Client *source_p, int parc, const char *parv[]) |
212380e3 AC |
124 | { |
125 | struct Client *target_p; | |
126 | ||
127 | /* note: early versions of ratbox allowed users to issue a remote | |
128 | * whois with a blank parv[2], so we cannot treat it as a protocol | |
129 | * violation. --anfl | |
130 | */ | |
131 | if(parc < 3 || EmptyString(parv[2])) | |
132 | { | |
133 | sendto_one(source_p, form_str(ERR_NONICKNAMEGIVEN), | |
134 | me.name, source_p->name); | |
3c7d6fcc | 135 | return; |
212380e3 AC |
136 | } |
137 | ||
138 | /* check if parv[1] exists */ | |
139 | if((target_p = find_client(parv[1])) == NULL) | |
140 | { | |
141 | sendto_one_numeric(source_p, ERR_NOSUCHSERVER, | |
55abcbb2 | 142 | form_str(ERR_NOSUCHSERVER), |
212380e3 | 143 | IsDigit(parv[1][0]) ? "*" : parv[1]); |
3c7d6fcc | 144 | return; |
212380e3 AC |
145 | } |
146 | ||
147 | /* if parv[1] isnt my client, or me, someone else is supposed | |
55abcbb2 | 148 | * to be handling the request.. so send it to them |
212380e3 AC |
149 | */ |
150 | if(!MyClient(target_p) && !IsMe(target_p)) | |
151 | { | |
55abcbb2 KB |
152 | sendto_one(target_p, ":%s WHOIS %s :%s", |
153 | get_id(source_p, target_p), | |
212380e3 | 154 | get_id(target_p, target_p), parv[2]); |
3c7d6fcc | 155 | return; |
212380e3 AC |
156 | } |
157 | ||
158 | /* ok, the target is either us, or a client on our server, so perform the whois | |
159 | * but first, parv[1] == server to perform the whois on, parv[2] == person | |
160 | * to whois, so make parv[1] = parv[2] so do_whois is ok -- fl_ | |
161 | */ | |
162 | parv[1] = parv[2]; | |
163 | do_whois(client_p, source_p, parc, parv); | |
212380e3 AC |
164 | } |
165 | ||
166 | /* do_whois | |
167 | * | |
55abcbb2 KB |
168 | * inputs - pointer to |
169 | * output - | |
212380e3 AC |
170 | * side effects - |
171 | */ | |
172 | static void | |
173 | do_whois(struct Client *client_p, struct Client *source_p, int parc, const char *parv[]) | |
174 | { | |
175 | struct Client *target_p; | |
176 | char *nick; | |
177 | char *p = NULL; | |
178 | int operspy = 0; | |
179 | ||
180 | nick = LOCAL_COPY(parv[1]); | |
181 | if((p = strchr(nick, ','))) | |
182 | *p = '\0'; | |
183 | ||
184 | if(IsOperSpy(source_p) && *nick == '!') | |
185 | { | |
186 | operspy = 1; | |
187 | nick++; | |
188 | } | |
189 | ||
2ebef8d9 | 190 | target_p = find_named_person(nick); |
212380e3 AC |
191 | if(target_p != NULL) |
192 | { | |
193 | if(operspy) | |
194 | { | |
195 | char buffer[BUFSIZE]; | |
196 | ||
5203cba5 | 197 | snprintf(buffer, sizeof(buffer), "%s!%s@%s %s", |
212380e3 | 198 | target_p->name, target_p->username, |
c88cdb00 | 199 | target_p->host, target_p->servptr->name); |
212380e3 AC |
200 | report_operspy(source_p, "WHOIS", buffer); |
201 | } | |
202 | ||
203 | single_whois(source_p, target_p, operspy); | |
204 | } | |
205 | else | |
206 | sendto_one_numeric(source_p, ERR_NOSUCHNICK, | |
55abcbb2 | 207 | form_str(ERR_NOSUCHNICK), |
8a1e143f | 208 | nick); |
212380e3 | 209 | |
55abcbb2 | 210 | sendto_one_numeric(source_p, RPL_ENDOFWHOIS, |
212380e3 | 211 | form_str(RPL_ENDOFWHOIS), parv[1]); |
212380e3 AC |
212 | } |
213 | ||
214 | /* | |
215 | * single_whois() | |
216 | * | |
217 | * Inputs - source_p client to report to | |
218 | * - target_p client to report on | |
219 | * Output - if found return 1 | |
220 | * Side Effects - do a single whois on given client | |
221 | * writing results to source_p | |
222 | */ | |
223 | static void | |
224 | single_whois(struct Client *source_p, struct Client *target_p, int operspy) | |
225 | { | |
226 | char buf[BUFSIZE]; | |
5b96d9a6 | 227 | rb_dlink_node *ptr; |
212380e3 AC |
228 | struct membership *msptr; |
229 | struct Channel *chptr; | |
230 | int cur_len = 0; | |
231 | int mlen; | |
232 | char *t; | |
233 | int tlen; | |
234 | hook_data_client hdata; | |
212380e3 | 235 | int extra_space = 0; |
ae52fe0f JT |
236 | #ifdef RB_IPV6 |
237 | struct sockaddr_in ip4; | |
238 | #endif | |
212380e3 | 239 | |
212380e3 AC |
240 | if(target_p->user == NULL) |
241 | { | |
242 | s_assert(0); | |
243 | return; | |
244 | } | |
245 | ||
212380e3 | 246 | sendto_one_numeric(source_p, RPL_WHOISUSER, form_str(RPL_WHOISUSER), |
55abcbb2 | 247 | target_p->name, target_p->username, |
212380e3 AC |
248 | target_p->host, target_p->info); |
249 | ||
5203cba5 | 250 | cur_len = mlen = sprintf(buf, form_str(RPL_WHOISCHANNELS), |
55abcbb2 | 251 | get_id(&me, source_p), get_id(source_p, source_p), |
212380e3 AC |
252 | target_p->name); |
253 | ||
254 | /* Make sure it won't overflow when sending it to the client | |
255 | * in full names; note that serverhiding may require more space | |
256 | * for a different server name (not done here) -- jilles | |
257 | */ | |
258 | if (!MyConnect(source_p)) | |
259 | { | |
260 | extra_space = strlen(source_p->name) - 9; | |
261 | if (extra_space < 0) | |
262 | extra_space = 0; | |
263 | extra_space += strlen(me.name) - 2; /* make sure >= 0 */ | |
264 | cur_len += extra_space; | |
265 | } | |
266 | ||
267 | t = buf + mlen; | |
268 | ||
9e07c8f7 AC |
269 | hdata.client = source_p; |
270 | hdata.target = target_p; | |
271 | ||
04513cff | 272 | if (!IsService(target_p)) |
212380e3 | 273 | { |
5b96d9a6 | 274 | RB_DLINK_FOREACH(ptr, target_p->user->channel.head) |
04513cff JT |
275 | { |
276 | msptr = ptr->data; | |
277 | chptr = msptr->chptr; | |
212380e3 | 278 | |
9e07c8f7 AC |
279 | hdata.chptr = chptr; |
280 | ||
281 | hdata.approved = ShowChannel(source_p, chptr); | |
282 | call_hook(doing_whois_channel_visibility_hook, &hdata); | |
212380e3 | 283 | |
9e07c8f7 | 284 | if(hdata.approved || operspy) |
212380e3 | 285 | { |
04513cff JT |
286 | if((cur_len + strlen(chptr->chname) + 3) > (BUFSIZE - 5)) |
287 | { | |
288 | sendto_one(source_p, "%s", buf); | |
289 | cur_len = mlen + extra_space; | |
290 | t = buf + mlen; | |
291 | } | |
292 | ||
5203cba5 | 293 | tlen = sprintf(t, "%s%s%s ", |
9e07c8f7 | 294 | hdata.approved ? "" : "!", |
04513cff JT |
295 | find_channel_status(msptr, 1), |
296 | chptr->chname); | |
297 | t += tlen; | |
298 | cur_len += tlen; | |
212380e3 | 299 | } |
212380e3 AC |
300 | } |
301 | } | |
302 | ||
303 | if(cur_len > mlen + extra_space) | |
304 | sendto_one(source_p, "%s", buf); | |
305 | ||
306 | sendto_one_numeric(source_p, RPL_WHOISSERVER, form_str(RPL_WHOISSERVER), | |
c88cdb00 | 307 | target_p->name, target_p->servptr->name, |
8170176a | 308 | target_p->servptr->info); |
212380e3 | 309 | |
c127b45b | 310 | if(target_p->user->away) |
212380e3 | 311 | sendto_one_numeric(source_p, RPL_AWAY, form_str(RPL_AWAY), |
c127b45b | 312 | target_p->name, target_p->user->away); |
212380e3 | 313 | |
6da38a0a | 314 | if(IsOper(target_p) && (!ConfigFileEntry.hide_opers_in_whois || IsOper(source_p))) |
212380e3 AC |
315 | { |
316 | sendto_one_numeric(source_p, RPL_WHOISOPERATOR, form_str(RPL_WHOISOPERATOR), | |
317 | target_p->name, | |
318 | IsService(target_p) ? ConfigFileEntry.servicestring : | |
319 | (IsAdmin(target_p) ? GlobalSetOptions.adminstring : | |
320 | GlobalSetOptions.operstring)); | |
321 | } | |
322 | ||
c6d884e8 | 323 | if(MyClient(target_p) && !EmptyString(target_p->localClient->opername) && IsOper(target_p) && IsOper(source_p)) |
72ad5c04 AC |
324 | { |
325 | char buf[512]; | |
5203cba5 | 326 | snprintf(buf, sizeof(buf), "is opered as %s, privset %s", |
72ad5c04 AC |
327 | target_p->localClient->opername, target_p->localClient->privset->name); |
328 | sendto_one_numeric(source_p, RPL_WHOISSPECIAL, form_str(RPL_WHOISSPECIAL), | |
329 | target_p->name, buf); | |
330 | } | |
331 | ||
af7aaa84 | 332 | if(IsSSLClient(target_p)) |
427a8d5d AC |
333 | { |
334 | char cbuf[256] = "is using a secure connection"; | |
335 | ||
336 | if (MyClient(target_p) && target_p->localClient->cipher_string != NULL) | |
337 | rb_snprintf_append(cbuf, sizeof(cbuf), " [%s]", target_p->localClient->cipher_string); | |
338 | ||
af7aaa84 | 339 | sendto_one_numeric(source_p, RPL_WHOISSECURE, form_str(RPL_WHOISSECURE), |
427a8d5d AC |
340 | target_p->name, cbuf); |
341 | if((source_p == target_p || IsOper(source_p)) && | |
342 | target_p->certfp != NULL) | |
343 | sendto_one_numeric(source_p, RPL_WHOISCERTFP, | |
344 | form_str(RPL_WHOISCERTFP), | |
345 | target_p->name, target_p->certfp); | |
346 | } | |
af7aaa84 | 347 | |
212380e3 AC |
348 | if(MyClient(target_p)) |
349 | { | |
350 | if (IsDynSpoof(target_p) && (IsOper(source_p) || source_p == target_p)) | |
351 | { | |
352 | /* trick here: show a nonoper their own IP if | |
353 | * dynamic spoofed but not if auth{} spoofed | |
354 | * -- jilles */ | |
355 | ClearDynSpoof(target_p); | |
356 | sendto_one_numeric(source_p, RPL_WHOISHOST, | |
357 | form_str(RPL_WHOISHOST), | |
358 | target_p->name, target_p->orighost, | |
359 | show_ip(source_p, target_p) ? target_p->sockhost : "255.255.255.255"); | |
360 | SetDynSpoof(target_p); | |
361 | } | |
362 | else if(ConfigFileEntry.use_whois_actually && show_ip(source_p, target_p)) | |
363 | sendto_one_numeric(source_p, RPL_WHOISACTUALLY, | |
364 | form_str(RPL_WHOISACTUALLY), | |
365 | target_p->name, target_p->sockhost); | |
366 | ||
ae52fe0f | 367 | #ifdef RB_IPV6 |
032ef5ef | 368 | if (GET_SS_FAMILY(&target_p->localClient->ip) == AF_INET6 && |
ae52fe0f JT |
369 | (show_ip(source_p, target_p) || |
370 | (source_p == target_p && !IsIPSpoof(target_p))) && | |
4eafa9e6 | 371 | rb_ipv4_from_ipv6((struct sockaddr_in6 *)&target_p->localClient->ip, &ip4)) |
ae52fe0f JT |
372 | { |
373 | rb_inet_ntop_sock((struct sockaddr *)&ip4, | |
374 | buf, sizeof buf); | |
375 | sendto_one_numeric(source_p, RPL_WHOISTEXT, | |
376 | "%s :Underlying IPv4 is %s", | |
377 | target_p->name, buf); | |
378 | } | |
379 | #endif /* RB_IPV6 */ | |
380 | ||
212380e3 | 381 | sendto_one_numeric(source_p, RPL_WHOISIDLE, form_str(RPL_WHOISIDLE), |
55abcbb2 KB |
382 | target_p->name, |
383 | (long)(rb_current_time() - target_p->localClient->last), | |
77910830 | 384 | (unsigned long)target_p->localClient->firsttime); |
212380e3 AC |
385 | } |
386 | else | |
387 | { | |
388 | if (IsDynSpoof(target_p) && (IsOper(source_p) || source_p == target_p)) | |
389 | { | |
390 | ClearDynSpoof(target_p); | |
391 | sendto_one_numeric(source_p, RPL_WHOISHOST, | |
392 | form_str(RPL_WHOISHOST), | |
393 | target_p->name, target_p->orighost, | |
394 | show_ip(source_p, target_p) && !EmptyString(target_p->sockhost) && strcmp(target_p->sockhost, "0")? target_p->sockhost : "255.255.255.255"); | |
395 | SetDynSpoof(target_p); | |
396 | } | |
397 | else if(ConfigFileEntry.use_whois_actually && show_ip(source_p, target_p) && | |
398 | !EmptyString(target_p->sockhost) && strcmp(target_p->sockhost, "0")) | |
399 | { | |
400 | sendto_one_numeric(source_p, RPL_WHOISACTUALLY, | |
401 | form_str(RPL_WHOISACTUALLY), | |
402 | target_p->name, target_p->sockhost); | |
55abcbb2 | 403 | |
212380e3 | 404 | } |
212380e3 AC |
405 | } |
406 | ||
212380e3 AC |
407 | /* doing_whois_hook must only be called for local clients, |
408 | * doing_whois_global_hook must only be called for local targets | |
409 | */ | |
410 | /* it is important that these are called *before* RPL_ENDOFWHOIS is | |
411 | * sent, services compatibility code depends on it. --anfl | |
412 | */ | |
413 | if(MyClient(source_p)) | |
414 | call_hook(doing_whois_hook, &hdata); | |
415 | else | |
416 | call_hook(doing_whois_global_hook, &hdata); | |
212380e3 | 417 | } |