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