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212380e3 AC |
1 | /* |
2 | * ircd-ratbox: an advanced Internet Relay Chat Daemon(ircd). | |
3 | * m_etrace.c: Gives local opers a trace output with added info. | |
4 | * | |
5 | * Copyright (C) 2002-2003 Lee Hardy <lee@leeh.co.uk> | |
6 | * Copyright (C) 2002-2005 ircd-ratbox development team | |
7 | * | |
8 | * Redistribution and use in source and binary forms, with or without | |
9 | * modification, are permitted provided that the following conditions are | |
10 | * met: | |
11 | * | |
12 | * 1.Redistributions of source code must retain the above copyright notice, | |
13 | * this list of conditions and the following disclaimer. | |
14 | * 2.Redistributions in binary form must reproduce the above copyright | |
15 | * notice, this list of conditions and the following disclaimer in the | |
16 | * documentation and/or other materials provided with the distribution. | |
17 | * 3.The name of the author may not be used to endorse or promote products | |
18 | * derived from this software without specific prior written permission. | |
19 | * | |
20 | * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR | |
21 | * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED | |
22 | * WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE | |
23 | * DISCLAIMED. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, | |
24 | * INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES | |
25 | * (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR | |
26 | * SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) | |
27 | * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, | |
28 | * STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING | |
29 | * IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE | |
30 | * POSSIBILITY OF SUCH DAMAGE. | |
31 | * | |
5366977b | 32 | * $Id: m_etrace.c 3161 2007-01-25 07:23:01Z nenolod $ |
212380e3 AC |
33 | */ |
34 | ||
35 | #include "stdinc.h" | |
36 | #include "class.h" | |
37 | #include "hook.h" | |
38 | #include "client.h" | |
39 | #include "hash.h" | |
40 | #include "common.h" | |
41 | #include "hash.h" | |
4562c604 | 42 | #include "match.h" |
212380e3 AC |
43 | #include "ircd.h" |
44 | #include "numeric.h" | |
212380e3 AC |
45 | #include "s_serv.h" |
46 | #include "s_conf.h" | |
47 | #include "s_newconf.h" | |
48 | #include "send.h" | |
49 | #include "msg.h" | |
50 | #include "parse.h" | |
51 | #include "modules.h" | |
52 | ||
53 | static int mo_etrace(struct Client *, struct Client *, int, const char **); | |
54 | static int me_etrace(struct Client *, struct Client *, int, const char **); | |
5807e0be | 55 | static int m_chantrace(struct Client *, struct Client *, int, const char **); |
212380e3 AC |
56 | static int mo_masktrace(struct Client *, struct Client *, int, const char **); |
57 | ||
58 | struct Message etrace_msgtab = { | |
59 | "ETRACE", 0, 0, 0, MFLG_SLOW, | |
60 | {mg_ignore, mg_not_oper, mg_ignore, mg_ignore, {me_etrace, 0}, {mo_etrace, 0}} | |
61 | }; | |
62 | struct Message chantrace_msgtab = { | |
63 | "CHANTRACE", 0, 0, 0, MFLG_SLOW, | |
5807e0be | 64 | {mg_ignore, {m_chantrace, 2}, mg_ignore, mg_ignore, mg_ignore, {m_chantrace, 2}} |
212380e3 AC |
65 | }; |
66 | struct Message masktrace_msgtab = { | |
67 | "MASKTRACE", 0, 0, 0, MFLG_SLOW, | |
68 | {mg_ignore, mg_not_oper, mg_ignore, mg_ignore, mg_ignore, {mo_masktrace, 2}} | |
69 | }; | |
70 | ||
71 | mapi_clist_av1 etrace_clist[] = { &etrace_msgtab, &chantrace_msgtab, &masktrace_msgtab, NULL }; | |
5366977b | 72 | DECLARE_MODULE_AV1(etrace, NULL, NULL, etrace_clist, NULL, NULL, "$Revision: 3161 $"); |
212380e3 AC |
73 | |
74 | static void do_etrace(struct Client *source_p, int ipv4, int ipv6); | |
75 | static void do_etrace_full(struct Client *source_p); | |
76 | static void do_single_etrace(struct Client *source_p, struct Client *target_p); | |
77 | ||
78 | static const char *empty_sockhost = "255.255.255.255"; | |
79 | static const char *spoofed_sockhost = "0"; | |
80 | ||
81 | /* | |
82 | * m_etrace | |
212380e3 AC |
83 | * parv[1] = options [or target] |
84 | * parv[2] = [target] | |
85 | */ | |
86 | static int | |
87 | mo_etrace(struct Client *client_p, struct Client *source_p, int parc, const char *parv[]) | |
88 | { | |
89 | if(parc > 1 && !EmptyString(parv[1])) | |
90 | { | |
91 | if(!irccmp(parv[1], "-full")) | |
92 | do_etrace_full(source_p); | |
ccda6e3f | 93 | #ifdef RB_IPV6 |
212380e3 AC |
94 | else if(!irccmp(parv[1], "-v6")) |
95 | do_etrace(source_p, 0, 1); | |
96 | else if(!irccmp(parv[1], "-v4")) | |
97 | do_etrace(source_p, 1, 0); | |
98 | #endif | |
99 | else | |
100 | { | |
101 | struct Client *target_p = find_named_person(parv[1]); | |
102 | ||
103 | if(target_p) | |
104 | { | |
105 | if(!MyClient(target_p)) | |
106 | sendto_one(target_p, ":%s ENCAP %s ETRACE %s", | |
107 | get_id(source_p, target_p), | |
c88cdb00 | 108 | target_p->servptr->name, |
212380e3 AC |
109 | get_id(target_p, target_p)); |
110 | else | |
111 | do_single_etrace(source_p, target_p); | |
112 | } | |
113 | else | |
114 | sendto_one_numeric(source_p, ERR_NOSUCHNICK, | |
115 | form_str(ERR_NOSUCHNICK), parv[1]); | |
116 | } | |
117 | } | |
118 | else | |
119 | do_etrace(source_p, 1, 1); | |
120 | ||
121 | return 0; | |
122 | } | |
123 | ||
124 | static int | |
125 | me_etrace(struct Client *client_p, struct Client *source_p, int parc, const char *parv[]) | |
126 | { | |
127 | struct Client *target_p; | |
128 | ||
129 | if(!IsOper(source_p) || parc < 2 || EmptyString(parv[1])) | |
130 | return 0; | |
131 | ||
132 | /* we cant etrace remote clients.. we shouldnt even get sent them */ | |
133 | if((target_p = find_person(parv[1])) && MyClient(target_p)) | |
134 | do_single_etrace(source_p, target_p); | |
135 | ||
136 | sendto_one_numeric(source_p, RPL_ENDOFTRACE, form_str(RPL_ENDOFTRACE), | |
137 | target_p ? target_p->name : parv[1]); | |
138 | ||
139 | return 0; | |
140 | } | |
141 | ||
142 | static void | |
143 | do_etrace(struct Client *source_p, int ipv4, int ipv6) | |
144 | { | |
145 | struct Client *target_p; | |
5b96d9a6 | 146 | rb_dlink_node *ptr; |
212380e3 AC |
147 | |
148 | /* report all direct connections */ | |
5b96d9a6 | 149 | RB_DLINK_FOREACH(ptr, lclient_list.head) |
212380e3 AC |
150 | { |
151 | target_p = ptr->data; | |
152 | ||
ccda6e3f | 153 | #ifdef RB_IPV6 |
212380e3 AC |
154 | if((!ipv4 && target_p->localClient->ip.ss_family == AF_INET) || |
155 | (!ipv6 && target_p->localClient->ip.ss_family == AF_INET6)) | |
156 | continue; | |
157 | #endif | |
158 | ||
159 | sendto_one(source_p, form_str(RPL_ETRACE), | |
160 | me.name, source_p->name, | |
161 | IsOper(target_p) ? "Oper" : "User", | |
162 | get_client_class(target_p), | |
163 | target_p->name, target_p->username, target_p->host, | |
164 | show_ip(source_p, target_p) ? target_p->sockhost : "255.255.255.255", | |
165 | target_p->info); | |
166 | } | |
167 | ||
168 | sendto_one_numeric(source_p, RPL_ENDOFTRACE, form_str(RPL_ENDOFTRACE), me.name); | |
169 | } | |
170 | ||
171 | static void | |
172 | do_etrace_full(struct Client *source_p) | |
173 | { | |
5b96d9a6 | 174 | rb_dlink_node *ptr; |
212380e3 | 175 | |
5b96d9a6 | 176 | RB_DLINK_FOREACH(ptr, lclient_list.head) |
212380e3 AC |
177 | { |
178 | do_single_etrace(source_p, ptr->data); | |
179 | } | |
180 | ||
181 | sendto_one_numeric(source_p, RPL_ENDOFTRACE, form_str(RPL_ENDOFTRACE), me.name); | |
182 | } | |
183 | ||
184 | /* | |
185 | * do_single_etrace - searches local clients and displays those matching | |
186 | * a pattern | |
187 | * input - source client, target client | |
188 | * output - etrace results | |
189 | * side effects - etrace results are displayed | |
190 | */ | |
191 | static void | |
192 | do_single_etrace(struct Client *source_p, struct Client *target_p) | |
193 | { | |
194 | /* note, we hide fullcaps for spoofed users, as mirc can often | |
195 | * advertise its internal ip address in the field --fl | |
196 | */ | |
197 | if(!show_ip(source_p, target_p)) | |
198 | sendto_one(source_p, form_str(RPL_ETRACEFULL), | |
199 | me.name, source_p->name, | |
200 | IsOper(target_p) ? "Oper" : "User", | |
201 | get_client_class(target_p), | |
202 | target_p->name, target_p->username, target_p->host, | |
203 | "255.255.255.255", "<hidden> <hidden>", target_p->info); | |
204 | else | |
205 | sendto_one(source_p, form_str(RPL_ETRACEFULL), | |
206 | me.name, source_p->name, | |
207 | IsOper(target_p) ? "Oper" : "User", | |
208 | get_client_class(target_p), | |
209 | target_p->name, target_p->username, | |
210 | target_p->host, target_p->sockhost, | |
211 | target_p->localClient->fullcaps, target_p->info); | |
212 | } | |
213 | ||
214 | static int | |
5807e0be | 215 | m_chantrace(struct Client *client_p, struct Client *source_p, int parc, const char *parv[]) |
212380e3 AC |
216 | { |
217 | struct Client *target_p; | |
218 | struct Channel *chptr; | |
219 | struct membership *msptr; | |
220 | const char *sockhost; | |
221 | const char *name; | |
5b96d9a6 | 222 | rb_dlink_node *ptr; |
212380e3 AC |
223 | int operspy = 0; |
224 | ||
225 | name = parv[1]; | |
226 | ||
227 | if(IsOperSpy(source_p) && parv[1][0] == '!') | |
228 | { | |
229 | name++; | |
230 | operspy = 1; | |
231 | ||
232 | if(EmptyString(name)) | |
233 | { | |
234 | sendto_one(source_p, form_str(ERR_NEEDMOREPARAMS), | |
235 | me.name, source_p->name, "CHANTRACE"); | |
236 | return 0; | |
237 | } | |
238 | } | |
239 | ||
240 | if((chptr = find_channel(name)) == NULL) | |
241 | { | |
242 | sendto_one_numeric(source_p, ERR_NOSUCHCHANNEL, form_str(ERR_NOSUCHCHANNEL), | |
243 | name); | |
244 | return 0; | |
245 | } | |
246 | ||
247 | /* dont report operspys for nonexistant channels. */ | |
248 | if(operspy) | |
249 | report_operspy(source_p, "CHANTRACE", chptr->chname); | |
250 | ||
251 | if(!operspy && !IsMember(client_p, chptr)) | |
252 | { | |
253 | sendto_one_numeric(source_p, ERR_NOTONCHANNEL, form_str(ERR_NOTONCHANNEL), | |
254 | chptr->chname); | |
255 | return 0; | |
256 | } | |
257 | ||
5b96d9a6 | 258 | RB_DLINK_FOREACH(ptr, chptr->members.head) |
212380e3 AC |
259 | { |
260 | msptr = ptr->data; | |
261 | target_p = msptr->client_p; | |
262 | ||
263 | if(EmptyString(target_p->sockhost)) | |
264 | sockhost = empty_sockhost; | |
265 | else if(!show_ip(source_p, target_p)) | |
266 | sockhost = spoofed_sockhost; | |
267 | else | |
268 | sockhost = target_p->sockhost; | |
269 | ||
270 | sendto_one(source_p, form_str(RPL_ETRACE), | |
271 | me.name, source_p->name, | |
272 | IsOper(target_p) ? "Oper" : "User", | |
273 | /* class field -- pretend its server.. */ | |
274 | target_p->servptr->name, | |
275 | target_p->name, target_p->username, target_p->host, | |
276 | sockhost, target_p->info); | |
277 | } | |
278 | ||
279 | sendto_one_numeric(source_p, RPL_ENDOFTRACE, form_str(RPL_ENDOFTRACE), me.name); | |
280 | return 0; | |
281 | } | |
282 | ||
283 | static void | |
5b96d9a6 | 284 | match_masktrace(struct Client *source_p, rb_dlink_list *list, |
212380e3 AC |
285 | const char *username, const char *hostname, const char *name, |
286 | const char *gecos) | |
287 | { | |
288 | struct Client *target_p; | |
5b96d9a6 | 289 | rb_dlink_node *ptr; |
212380e3 | 290 | const char *sockhost; |
212380e3 | 291 | |
5b96d9a6 | 292 | RB_DLINK_FOREACH(ptr, list->head) |
212380e3 AC |
293 | { |
294 | target_p = ptr->data; | |
295 | if(!IsPerson(target_p)) | |
296 | continue; | |
297 | ||
298 | if(EmptyString(target_p->sockhost)) | |
299 | sockhost = empty_sockhost; | |
300 | else if(!show_ip(source_p, target_p)) | |
301 | sockhost = spoofed_sockhost; | |
302 | else | |
303 | sockhost = target_p->sockhost; | |
304 | ||
305 | if(match(username, target_p->username) && | |
306 | (match(hostname, target_p->host) || | |
307 | match(hostname, target_p->orighost) || | |
308 | match(hostname, sockhost) || match_ips(hostname, sockhost))) | |
309 | { | |
310 | if(name != NULL && !match(name, target_p->name)) | |
311 | continue; | |
312 | ||
39b23540 | 313 | if(gecos != NULL && !match_esc(gecos, target_p->info)) |
212380e3 AC |
314 | continue; |
315 | ||
316 | sendto_one(source_p, form_str(RPL_ETRACE), | |
317 | me.name, source_p->name, | |
318 | IsOper(target_p) ? "Oper" : "User", | |
319 | /* class field -- pretend its server.. */ | |
320 | target_p->servptr->name, | |
321 | target_p->name, target_p->username, target_p->host, | |
322 | sockhost, target_p->info); | |
323 | } | |
324 | } | |
325 | } | |
326 | ||
327 | static int | |
328 | mo_masktrace(struct Client *client_p, struct Client *source_p, int parc, | |
329 | const char *parv[]) | |
330 | { | |
331 | char *name, *username, *hostname, *gecos; | |
332 | const char *mask; | |
333 | int operspy = 0; | |
334 | ||
335 | mask = parv[1]; | |
336 | name = LOCAL_COPY(parv[1]); | |
337 | collapse(name); | |
338 | ||
339 | if(IsOperSpy(source_p) && parv[1][0] == '!') | |
340 | { | |
341 | name++; | |
342 | mask++; | |
343 | operspy = 1; | |
344 | } | |
345 | ||
346 | if(parc > 2 && !EmptyString(parv[2])) | |
347 | { | |
348 | gecos = LOCAL_COPY(parv[2]); | |
349 | collapse_esc(gecos); | |
350 | } else | |
351 | gecos = NULL; | |
352 | ||
353 | ||
354 | if((hostname = strchr(name, '@')) == NULL) | |
355 | { | |
5366977b | 356 | sendto_one_notice(source_p, ":Invalid parameters"); |
212380e3 AC |
357 | return 0; |
358 | } | |
359 | ||
360 | *hostname++ = '\0'; | |
361 | ||
362 | if((username = strchr(name, '!')) == NULL) | |
363 | { | |
364 | username = name; | |
365 | name = NULL; | |
366 | } else | |
367 | *username++ = '\0'; | |
368 | ||
369 | if(EmptyString(username) || EmptyString(hostname)) | |
370 | { | |
5366977b | 371 | sendto_one_notice(source_p, ":Invalid parameters"); |
212380e3 AC |
372 | return 0; |
373 | } | |
374 | ||
375 | if(operspy) { | |
376 | if (!ConfigFileEntry.operspy_dont_care_user_info) | |
377 | { | |
378 | char buf[512]; | |
f427c8b0 | 379 | rb_strlcpy(buf, mask, sizeof(buf)); |
212380e3 | 380 | if(!EmptyString(gecos)) { |
1f9de103 VY |
381 | rb_strlcat(buf, " ", sizeof(buf)); |
382 | rb_strlcat(buf, gecos, sizeof(buf)); | |
212380e3 AC |
383 | } |
384 | ||
385 | report_operspy(source_p, "MASKTRACE", buf); | |
386 | } | |
387 | match_masktrace(source_p, &global_client_list, username, hostname, name, gecos); | |
388 | } else | |
389 | match_masktrace(source_p, &lclient_list, username, hostname, name, gecos); | |
390 | ||
391 | sendto_one_numeric(source_p, RPL_ENDOFTRACE, form_str(RPL_ENDOFTRACE), me.name); | |
392 | return 0; | |
393 | } |