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212380e3 | 1 | /* |
2 | * ircd-ratbox: A slightly useful ircd. | |
3 | * m_server.c: Introduces a server. | |
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_server.c 2733 2006-11-10 00:04:08Z jilles $ | |
25 | */ | |
26 | ||
27 | #include "stdinc.h" | |
28 | #include "tools.h" | |
29 | #include "client.h" /* client struct */ | |
30 | #include "common.h" /* TRUE bleah */ | |
31 | #include "event.h" | |
32 | #include "hash.h" /* add_to_client_hash */ | |
33 | #include "irc_string.h" | |
34 | #include "ircd.h" /* me */ | |
35 | #include "numeric.h" /* ERR_xxx */ | |
36 | #include "s_conf.h" /* struct ConfItem */ | |
37 | #include "s_newconf.h" | |
38 | #include "s_log.h" /* log level defines */ | |
39 | #include "s_serv.h" /* server_estab, check_server */ | |
40 | #include "s_stats.h" /* ServerStats */ | |
41 | #include "scache.h" /* find_or_add */ | |
42 | #include "send.h" /* sendto_one */ | |
43 | #include "msg.h" | |
44 | #include "parse.h" | |
45 | #include "modules.h" | |
46 | ||
47 | static int mr_server(struct Client *, struct Client *, int, const char **); | |
48 | static int ms_server(struct Client *, struct Client *, int, const char **); | |
49 | static int ms_sid(struct Client *, struct Client *, int, const char **); | |
50 | ||
51 | struct Message server_msgtab = { | |
52 | "SERVER", 0, 0, 0, MFLG_SLOW | MFLG_UNREG, | |
53 | {{mr_server, 4}, mg_reg, mg_ignore, {ms_server, 4}, mg_ignore, mg_reg} | |
54 | }; | |
55 | struct Message sid_msgtab = { | |
56 | "SID", 0, 0, 0, MFLG_SLOW, | |
57 | {mg_ignore, mg_reg, mg_ignore, {ms_sid, 5}, mg_ignore, mg_reg} | |
58 | }; | |
59 | ||
60 | mapi_clist_av1 server_clist[] = { &server_msgtab, &sid_msgtab, NULL }; | |
61 | ||
62 | DECLARE_MODULE_AV1(server, NULL, NULL, server_clist, NULL, NULL, "$Revision: 2733 $"); | |
63 | ||
64 | int bogus_host(const char *host); | |
65 | struct Client *server_exists(const char *); | |
66 | static int set_server_gecos(struct Client *, const char *); | |
67 | ||
68 | /* | |
69 | * mr_server - SERVER message handler | |
70 | * parv[0] = sender prefix | |
71 | * parv[1] = servername | |
72 | * parv[2] = serverinfo/hopcount | |
73 | * parv[3] = serverinfo | |
74 | */ | |
75 | static int | |
76 | mr_server(struct Client *client_p, struct Client *source_p, int parc, const char *parv[]) | |
77 | { | |
78 | char info[REALLEN + 1]; | |
79 | const char *name; | |
80 | struct Client *target_p; | |
81 | int hop; | |
82 | ||
83 | name = parv[1]; | |
84 | hop = atoi(parv[2]); | |
85 | strlcpy(info, parv[3], sizeof(info)); | |
86 | ||
87 | /* | |
88 | * Reject a direct nonTS server connection if we're TS_ONLY -orabidoo | |
89 | */ | |
90 | if(!DoesTS(client_p)) | |
91 | { | |
92 | sendto_realops_snomask(SNO_GENERAL, L_ALL, "Link %s dropped, non-TS server", | |
93 | get_server_name(client_p, HIDE_IP)); | |
94 | exit_client(client_p, client_p, client_p, "Non-TS server"); | |
95 | return 0; | |
96 | } | |
97 | ||
98 | if(bogus_host(name)) | |
99 | { | |
100 | exit_client(client_p, client_p, client_p, "Bogus server name"); | |
101 | return 0; | |
102 | } | |
103 | ||
104 | /* Now we just have to call check_server and everything should be | |
105 | * check for us... -A1kmm. */ | |
106 | switch (check_server(name, client_p)) | |
107 | { | |
108 | case -1: | |
109 | if(ConfigFileEntry.warn_no_nline) | |
110 | { | |
111 | sendto_realops_snomask(SNO_GENERAL, L_ALL, | |
112 | "Unauthorised server connection attempt from %s: " | |
113 | "No entry for servername %s", | |
114 | get_server_name(client_p, HIDE_IP), name); | |
115 | ||
116 | ilog(L_SERVER, "Access denied, no connect block for server %s%s", | |
117 | EmptyString(client_p->name) ? name : "", | |
118 | log_client_name(client_p, SHOW_IP)); | |
119 | } | |
120 | ||
121 | exit_client(client_p, client_p, client_p, "Invalid servername."); | |
122 | return 0; | |
123 | /* NOT REACHED */ | |
124 | break; | |
125 | ||
126 | case -2: | |
127 | sendto_realops_snomask(SNO_GENERAL, L_ALL, | |
128 | "Unauthorised server connection attempt from %s: " | |
129 | "Bad password for server %s", | |
130 | get_server_name(client_p, HIDE_IP), name); | |
131 | ||
132 | ilog(L_SERVER, "Access denied, invalid password for server %s%s", | |
133 | EmptyString(client_p->name) ? name : "", | |
134 | log_client_name(client_p, SHOW_IP)); | |
135 | ||
136 | exit_client(client_p, client_p, client_p, "Invalid password."); | |
137 | return 0; | |
138 | /* NOT REACHED */ | |
139 | break; | |
140 | ||
141 | case -3: | |
142 | sendto_realops_snomask(SNO_GENERAL, L_ALL, | |
143 | "Unauthorised server connection attempt from %s: " | |
144 | "Invalid host for server %s", | |
145 | get_server_name(client_p, HIDE_IP), name); | |
146 | ||
147 | ilog(L_SERVER, "Access denied, invalid host for server %s%s", | |
148 | EmptyString(client_p->name) ? name : "", | |
149 | log_client_name(client_p, SHOW_IP)); | |
150 | ||
151 | exit_client(client_p, client_p, client_p, "Invalid host."); | |
152 | return 0; | |
153 | /* NOT REACHED */ | |
154 | break; | |
155 | ||
156 | /* servername is > HOSTLEN */ | |
157 | case -4: | |
158 | sendto_realops_snomask(SNO_GENERAL, L_ALL, | |
159 | "Invalid servername %s from %s", | |
160 | name, get_server_name(client_p, HIDE_IP)); | |
161 | ilog(L_SERVER, "Access denied, invalid servername from %s", | |
162 | log_client_name(client_p, SHOW_IP)); | |
163 | ||
164 | exit_client(client_p, client_p, client_p, "Invalid servername."); | |
165 | return 0; | |
166 | /* NOT REACHED */ | |
167 | break; | |
168 | } | |
169 | ||
170 | if((target_p = server_exists(name))) | |
171 | { | |
172 | /* | |
173 | * This link is trying feed me a server that I already have | |
174 | * access through another path -- multiple paths not accepted | |
175 | * currently, kill this link immediately!! | |
176 | * | |
177 | * Rather than KILL the link which introduced it, KILL the | |
178 | * youngest of the two links. -avalon | |
179 | * | |
180 | * Definitely don't do that here. This is from an unregistered | |
181 | * connect - A1kmm. | |
182 | */ | |
183 | sendto_realops_snomask(SNO_GENERAL, L_ALL, | |
184 | "Attempt to re-introduce server %s from %s", | |
185 | name, get_server_name(client_p, HIDE_IP)); | |
186 | ilog(L_SERVER, "Attempt to re-introduce server %s from %s", | |
187 | name, log_client_name(client_p, SHOW_IP)); | |
188 | ||
189 | sendto_one(client_p, "ERROR :Server already exists."); | |
190 | exit_client(client_p, client_p, client_p, "Server Exists"); | |
191 | return 0; | |
192 | } | |
193 | ||
194 | if(has_id(client_p) && (target_p = find_id(client_p->id)) != NULL) | |
195 | { | |
196 | sendto_realops_snomask(SNO_GENERAL, L_ALL, | |
197 | "Attempt to re-introduce SID %s from %s%s", | |
198 | client_p->id, | |
199 | EmptyString(client_p->name) ? name : "", | |
200 | get_server_name(client_p, HIDE_IP)); | |
201 | ilog(L_SERVER, "Attempt to re-introduce SID %s from %s%s", | |
202 | client_p->id, | |
203 | EmptyString(client_p->name) ? name : "", | |
204 | log_client_name(client_p, SHOW_IP)); | |
205 | ||
206 | sendto_one(client_p, "ERROR :SID already exists."); | |
207 | exit_client(client_p, client_p, client_p, "SID Exists"); | |
208 | return 0; | |
209 | } | |
210 | ||
211 | /* | |
212 | * if we are connecting (Handshake), we already have the name from the | |
213 | * C:line in client_p->name | |
214 | */ | |
215 | ||
216 | strlcpy(client_p->name, name, sizeof(client_p->name)); | |
217 | set_server_gecos(client_p, info); | |
218 | client_p->hopcount = hop; | |
219 | server_estab(client_p); | |
220 | ||
221 | return 0; | |
222 | } | |
223 | ||
224 | /* | |
225 | * ms_server - SERVER message handler | |
226 | * parv[0] = sender prefix | |
227 | * parv[1] = servername | |
228 | * parv[2] = serverinfo/hopcount | |
229 | * parv[3] = serverinfo | |
230 | */ | |
231 | static int | |
232 | ms_server(struct Client *client_p, struct Client *source_p, int parc, const char *parv[]) | |
233 | { | |
234 | char info[REALLEN + 1]; | |
235 | /* same size as in s_misc.c */ | |
236 | const char *name; | |
237 | struct Client *target_p; | |
238 | struct remote_conf *hub_p; | |
239 | hook_data_client hdata; | |
240 | int hop; | |
241 | int hlined = 0; | |
242 | int llined = 0; | |
243 | dlink_node *ptr; | |
244 | ||
245 | name = parv[1]; | |
246 | hop = atoi(parv[2]); | |
247 | strlcpy(info, parv[3], sizeof(info)); | |
248 | ||
249 | if((target_p = server_exists(name))) | |
250 | { | |
251 | /* | |
252 | * This link is trying feed me a server that I already have | |
253 | * access through another path -- multiple paths not accepted | |
254 | * currently, kill this link immediately!! | |
255 | * | |
256 | * Rather than KILL the link which introduced it, KILL the | |
257 | * youngest of the two links. -avalon | |
258 | * | |
259 | * I think that we should exit the link itself, not the introducer, | |
260 | * and we should always exit the most recently received(i.e. the | |
261 | * one we are receiving this SERVER for. -A1kmm | |
262 | * | |
263 | * You *cant* do this, if you link somewhere, it bursts you a server | |
264 | * that already exists, then sends you a client burst, you squit the | |
265 | * server, but you keep getting the burst of clients on a server that | |
266 | * doesnt exist, although ircd can handle it, its not a realistic | |
267 | * solution.. --fl_ | |
268 | */ | |
269 | /* It is behind a host-masked server. Completely ignore the | |
270 | * server message(don't propagate or we will delink from whoever | |
271 | * we propagate to). -A1kmm */ | |
272 | if(irccmp(target_p->name, name) && target_p->from == client_p) | |
273 | return 0; | |
274 | ||
275 | sendto_one(client_p, "ERROR :Server %s already exists", name); | |
276 | ||
277 | sendto_realops_snomask(SNO_GENERAL, L_ALL, | |
278 | "Link %s cancelled, server %s already exists", | |
279 | get_server_name(client_p, SHOW_IP), name); | |
280 | ilog(L_SERVER, "Link %s cancelled, server %s already exists", | |
281 | client_p->name, name); | |
282 | ||
283 | exit_client(client_p, client_p, &me, "Server Exists"); | |
284 | return 0; | |
285 | } | |
286 | ||
287 | /* | |
288 | * User nicks never have '.' in them and server names | |
289 | * must always have '.' in them. | |
290 | */ | |
291 | if(strchr(name, '.') == NULL) | |
292 | { | |
293 | /* | |
294 | * Server trying to use the same name as a person. Would | |
295 | * cause a fair bit of confusion. Enough to make it hellish | |
296 | * for a while and servers to send stuff to the wrong place. | |
297 | */ | |
298 | sendto_one(client_p, "ERROR :Nickname %s already exists!", name); | |
299 | sendto_realops_snomask(SNO_GENERAL, L_ALL, | |
300 | "Link %s cancelled: Server/nick collision on %s", | |
301 | get_server_name(client_p, HIDE_IP), name); | |
302 | ilog(L_SERVER, "Link %s cancelled: Server/nick collision on %s", | |
303 | client_p->name, name); | |
304 | ||
305 | exit_client(client_p, client_p, client_p, "Nick as Server"); | |
306 | return 0; | |
307 | } | |
308 | ||
309 | /* | |
310 | * Server is informing about a new server behind | |
311 | * this link. Create REMOTE server structure, | |
312 | * add it to list and propagate word to my other | |
313 | * server links... | |
314 | */ | |
315 | if(parc == 1 || EmptyString(info)) | |
316 | { | |
317 | sendto_one(client_p, "ERROR :No server info specified for %s", name); | |
318 | return 0; | |
319 | } | |
320 | ||
321 | /* | |
322 | * See if the newly found server is behind a guaranteed | |
323 | * leaf. If so, close the link. | |
324 | * | |
325 | */ | |
326 | DLINK_FOREACH(ptr, hubleaf_conf_list.head) | |
327 | { | |
328 | hub_p = ptr->data; | |
329 | ||
330 | if(match(hub_p->server, client_p->name) && match(hub_p->host, name)) | |
331 | { | |
332 | if(hub_p->flags & CONF_HUB) | |
333 | hlined++; | |
334 | else | |
335 | llined++; | |
336 | } | |
337 | } | |
338 | ||
339 | /* Ok, this way this works is | |
340 | * | |
341 | * A server can have a CONF_HUB allowing it to introduce servers | |
342 | * behind it. | |
343 | * | |
344 | * connect { | |
345 | * name = "irc.bighub.net"; | |
346 | * hub_mask="*"; | |
347 | * ... | |
348 | * | |
349 | * That would allow "irc.bighub.net" to introduce anything it wanted.. | |
350 | * | |
351 | * However | |
352 | * | |
353 | * connect { | |
354 | * name = "irc.somehub.fi"; | |
355 | * hub_mask="*"; | |
356 | * leaf_mask="*.edu"; | |
357 | *... | |
358 | * Would allow this server in finland to hub anything but | |
359 | * .edu's | |
360 | */ | |
361 | ||
362 | /* Ok, check client_p can hub the new server, and make sure it's not a LL */ | |
363 | if(!hlined) | |
364 | { | |
365 | /* OOOPs nope can't HUB */ | |
366 | sendto_realops_snomask(SNO_GENERAL, L_ALL, "Non-Hub link %s introduced %s.", | |
367 | get_server_name(client_p, HIDE_IP), name); | |
368 | ilog(L_SERVER, "Non-Hub link %s introduced %s.", | |
369 | client_p->name, name); | |
370 | ||
371 | exit_client(NULL, client_p, &me, "No matching hub_mask."); | |
372 | return 0; | |
373 | } | |
374 | ||
375 | /* Check for the new server being leafed behind this HUB */ | |
376 | if(llined) | |
377 | { | |
378 | /* OOOPs nope can't HUB this leaf */ | |
379 | sendto_realops_snomask(SNO_GENERAL, L_ALL, | |
380 | "Link %s introduced leafed server %s.", | |
381 | get_server_name(client_p, HIDE_IP), name); | |
382 | ilog(L_SERVER, "Link %s introduced leafed server %s.", | |
383 | client_p->name, name); | |
384 | ||
385 | exit_client(NULL, client_p, &me, "Leafed Server."); | |
386 | return 0; | |
387 | } | |
388 | ||
389 | ||
390 | ||
391 | if(strlen(name) > HOSTLEN) | |
392 | { | |
393 | sendto_realops_snomask(SNO_GENERAL, L_ALL, | |
394 | "Link %s introduced server with invalid servername %s", | |
395 | get_server_name(client_p, HIDE_IP), name); | |
396 | ilog(L_SERVER, "Link %s introduced server with invalid servername %s", | |
397 | client_p->name, name); | |
398 | ||
399 | exit_client(NULL, client_p, &me, "Invalid servername introduced."); | |
400 | return 0; | |
401 | } | |
402 | ||
403 | target_p = make_client(client_p); | |
404 | make_server(target_p); | |
405 | target_p->hopcount = hop; | |
406 | ||
407 | strlcpy(target_p->name, name, sizeof(target_p->name)); | |
408 | ||
409 | set_server_gecos(target_p, info); | |
410 | ||
411 | target_p->serv->up = find_or_add(source_p->name); | |
412 | ||
413 | if(has_id(source_p)) | |
414 | target_p->serv->upid = source_p->id; | |
415 | ||
416 | target_p->servptr = source_p; | |
417 | ||
418 | SetServer(target_p); | |
419 | ||
420 | dlinkAddTail(target_p, &target_p->node, &global_client_list); | |
421 | dlinkAddTailAlloc(target_p, &global_serv_list); | |
422 | add_to_client_hash(target_p->name, target_p); | |
423 | dlinkAdd(target_p, &target_p->lnode, &target_p->servptr->serv->servers); | |
424 | ||
425 | sendto_server(client_p, NULL, NOCAPS, NOCAPS, | |
426 | ":%s SERVER %s %d :%s%s", | |
427 | source_p->name, target_p->name, target_p->hopcount + 1, | |
428 | IsHidden(target_p) ? "(H) " : "", target_p->info); | |
429 | ||
430 | sendto_realops_snomask(SNO_EXTERNAL, L_ALL, | |
431 | "Server %s being introduced by %s", target_p->name, source_p->name); | |
432 | ||
433 | /* quick, dirty EOB. you know you love it. */ | |
434 | sendto_one(target_p, ":%s PING %s %s", get_id(&me, target_p), me.name, target_p->name); | |
435 | ||
436 | hdata.client = source_p; | |
437 | hdata.target = target_p; | |
438 | call_hook(h_server_introduced, &hdata); | |
439 | ||
440 | return 0; | |
441 | } | |
442 | ||
443 | static int | |
444 | ms_sid(struct Client *client_p, struct Client *source_p, int parc, const char *parv[]) | |
445 | { | |
446 | struct Client *target_p; | |
447 | struct remote_conf *hub_p; | |
448 | hook_data_client hdata; | |
449 | dlink_node *ptr; | |
450 | int hop; | |
451 | int hlined = 0; | |
452 | int llined = 0; | |
453 | ||
454 | hop = atoi(parv[2]); | |
455 | ||
456 | /* collision on the name? */ | |
457 | if((target_p = server_exists(parv[1])) != NULL) | |
458 | { | |
459 | sendto_one(client_p, "ERROR :Server %s already exists", parv[1]); | |
460 | sendto_realops_snomask(SNO_GENERAL, L_ALL, | |
461 | "Link %s cancelled, server %s already exists", | |
462 | get_server_name(client_p, SHOW_IP), parv[1]); | |
463 | ilog(L_SERVER, "Link %s cancelled, server %s already exists", | |
464 | client_p->name, parv[1]); | |
465 | ||
466 | exit_client(NULL, client_p, &me, "Server Exists"); | |
467 | return 0; | |
468 | } | |
469 | ||
470 | /* collision on the SID? */ | |
471 | if((target_p = find_id(parv[3])) != NULL) | |
472 | { | |
473 | sendto_one(client_p, "ERROR :SID %s already exists", parv[3]); | |
474 | sendto_realops_snomask(SNO_GENERAL, L_ALL, | |
475 | "Link %s cancelled, SID %s already exists", | |
476 | get_server_name(client_p, SHOW_IP), parv[3]); | |
477 | ilog(L_SERVER, "Link %s cancelled, SID %s already exists", | |
478 | client_p->name, parv[3]); | |
479 | ||
480 | exit_client(NULL, client_p, &me, "Server Exists"); | |
481 | return 0; | |
482 | } | |
483 | ||
484 | if(bogus_host(parv[1]) || strlen(parv[1]) > HOSTLEN) | |
485 | { | |
486 | sendto_one(client_p, "ERROR :Invalid servername"); | |
487 | sendto_realops_snomask(SNO_GENERAL, L_ALL, | |
488 | "Link %s cancelled, servername %s invalid", | |
489 | get_server_name(client_p, SHOW_IP), parv[1]); | |
490 | ilog(L_SERVER, "Link %s cancelled, servername %s invalid", | |
491 | client_p->name, parv[1]); | |
492 | ||
493 | exit_client(NULL, client_p, &me, "Bogus server name"); | |
494 | return 0; | |
495 | } | |
496 | ||
497 | if(!IsDigit(parv[3][0]) || !IsIdChar(parv[3][1]) || | |
498 | !IsIdChar(parv[3][2]) || parv[3][3] != '\0') | |
499 | { | |
500 | sendto_one(client_p, "ERROR :Invalid SID"); | |
501 | sendto_realops_snomask(SNO_GENERAL, L_ALL, | |
502 | "Link %s cancelled, SID %s invalid", | |
503 | get_server_name(client_p, SHOW_IP), parv[3]); | |
504 | ilog(L_SERVER, "Link %s cancelled, SID %s invalid", | |
505 | client_p->name, parv[3]); | |
506 | ||
507 | exit_client(NULL, client_p, &me, "Bogus SID"); | |
508 | return 0; | |
509 | } | |
510 | ||
511 | /* for the directly connected server: | |
512 | * H: allows it to introduce a server matching that mask | |
513 | * L: disallows it introducing a server matching that mask | |
514 | */ | |
515 | DLINK_FOREACH(ptr, hubleaf_conf_list.head) | |
516 | { | |
517 | hub_p = ptr->data; | |
518 | ||
519 | if(match(hub_p->server, client_p->name) && match(hub_p->host, parv[1])) | |
520 | { | |
521 | if(hub_p->flags & CONF_HUB) | |
522 | hlined++; | |
523 | else | |
524 | llined++; | |
525 | } | |
526 | } | |
527 | ||
528 | /* no matching hub_mask */ | |
529 | if(!hlined) | |
530 | { | |
531 | sendto_one(client_p, "ERROR :No matching hub_mask"); | |
532 | sendto_realops_snomask(SNO_GENERAL, L_ALL, | |
533 | "Non-Hub link %s introduced %s.", | |
534 | get_server_name(client_p, SHOW_IP), parv[1]); | |
535 | ilog(L_SERVER, "Non-Hub link %s introduced %s.", | |
536 | client_p->name, parv[1]); | |
537 | exit_client(NULL, client_p, &me, "No matching hub_mask."); | |
538 | return 0; | |
539 | } | |
540 | ||
541 | /* matching leaf_mask */ | |
542 | if(llined) | |
543 | { | |
544 | sendto_one(client_p, "ERROR :Matching leaf_mask"); | |
545 | sendto_realops_snomask(SNO_GENERAL, L_ALL, | |
546 | "Link %s introduced leafed server %s.", | |
547 | get_server_name(client_p, SHOW_IP), parv[1]); | |
548 | ilog(L_SERVER, "Link %s introduced leafed server %s.", | |
549 | client_p->name, parv[1]); | |
550 | exit_client(NULL, client_p, &me, "Leafed Server."); | |
551 | return 0; | |
552 | } | |
553 | ||
554 | /* ok, alls good */ | |
555 | target_p = make_client(client_p); | |
556 | make_server(target_p); | |
557 | ||
558 | strlcpy(target_p->name, parv[1], sizeof(target_p->name)); | |
559 | target_p->hopcount = atoi(parv[2]); | |
560 | strcpy(target_p->id, parv[3]); | |
561 | set_server_gecos(target_p, parv[4]); | |
562 | ||
563 | target_p->serv->up = find_or_add(source_p->name); | |
564 | ||
565 | if(has_id(source_p)) | |
566 | target_p->serv->upid = source_p->id; | |
567 | ||
568 | target_p->servptr = source_p; | |
569 | SetServer(target_p); | |
570 | ||
571 | dlinkAddTail(target_p, &target_p->node, &global_client_list); | |
572 | dlinkAddTailAlloc(target_p, &global_serv_list); | |
573 | add_to_client_hash(target_p->name, target_p); | |
574 | add_to_id_hash(target_p->id, target_p); | |
575 | dlinkAdd(target_p, &target_p->lnode, &target_p->servptr->serv->servers); | |
576 | ||
577 | sendto_server(client_p, NULL, CAP_TS6, NOCAPS, | |
578 | ":%s SID %s %d %s :%s%s", | |
579 | source_p->id, target_p->name, target_p->hopcount + 1, | |
580 | target_p->id, IsHidden(target_p) ? "(H) " : "", target_p->info); | |
581 | sendto_server(client_p, NULL, NOCAPS, CAP_TS6, | |
582 | ":%s SERVER %s %d :%s%s", | |
583 | source_p->name, target_p->name, target_p->hopcount + 1, | |
584 | IsHidden(target_p) ? "(H) " : "", target_p->info); | |
585 | ||
586 | sendto_realops_snomask(SNO_EXTERNAL, L_ALL, | |
587 | "Server %s being introduced by %s", target_p->name, source_p->name); | |
588 | ||
589 | /* quick, dirty EOB. you know you love it. */ | |
590 | sendto_one(target_p, ":%s PING %s %s", | |
591 | get_id(&me, target_p), me.name, get_id(target_p, target_p)); | |
592 | ||
593 | hdata.client = source_p; | |
594 | hdata.target = target_p; | |
595 | call_hook(h_server_introduced, &hdata); | |
596 | ||
597 | return 0; | |
598 | } | |
599 | ||
600 | /* set_server_gecos() | |
601 | * | |
602 | * input - pointer to client | |
603 | * output - none | |
604 | * side effects - servers gecos field is set | |
605 | */ | |
606 | static int | |
607 | set_server_gecos(struct Client *client_p, const char *info) | |
608 | { | |
609 | /* check the info for [IP] */ | |
610 | if(info[0]) | |
611 | { | |
612 | char *p; | |
613 | char *s; | |
614 | char *t; | |
615 | ||
616 | s = LOCAL_COPY(info); | |
617 | ||
618 | /* we should only check the first word for an ip */ | |
619 | if((p = strchr(s, ' '))) | |
620 | *p = '\0'; | |
621 | ||
622 | /* check for a ] which would symbolise an [IP] */ | |
623 | if((t = strchr(s, ']'))) | |
624 | { | |
625 | /* set s to after the first space */ | |
626 | if(p) | |
627 | s = ++p; | |
628 | else | |
629 | s = NULL; | |
630 | } | |
631 | /* no ], put the space back */ | |
632 | else if(p) | |
633 | *p = ' '; | |
634 | ||
635 | /* p may have been set to a trailing space, so check s exists and that | |
636 | * it isnt \0 */ | |
637 | if(s && (*s != '\0')) | |
638 | { | |
639 | /* a space? if not (H) could be the last part of info.. */ | |
640 | if((p = strchr(s, ' '))) | |
641 | *p = '\0'; | |
642 | ||
643 | /* check for (H) which is a hidden server */ | |
644 | if(!strcmp(s, "(H)")) | |
645 | { | |
646 | SetHidden(client_p); | |
647 | ||
648 | /* if there was no space.. theres nothing to set info to */ | |
649 | if(p) | |
650 | s = ++p; | |
651 | else | |
652 | s = NULL; | |
653 | } | |
654 | else if(p) | |
655 | *p = ' '; | |
656 | ||
657 | /* if there was a trailing space, s could point to \0, so check */ | |
658 | if(s && (*s != '\0')) | |
659 | { | |
660 | strlcpy(client_p->info, s, sizeof(client_p->info)); | |
661 | return 1; | |
662 | } | |
663 | } | |
664 | } | |
665 | ||
666 | strlcpy(client_p->info, "(Unknown Location)", sizeof(client_p->info)); | |
667 | ||
668 | return 1; | |
669 | } | |
670 | ||
671 | /* | |
672 | * bogus_host | |
673 | * | |
674 | * inputs - hostname | |
675 | * output - 1 if a bogus hostname input, 0 if its valid | |
676 | * side effects - none | |
677 | */ | |
678 | int | |
679 | bogus_host(const char *host) | |
680 | { | |
681 | int bogus_server = 0; | |
682 | const char *s; | |
683 | int dots = 0; | |
684 | ||
685 | for(s = host; *s; s++) | |
686 | { | |
687 | if(!IsServChar(*s)) | |
688 | { | |
689 | bogus_server = 1; | |
690 | break; | |
691 | } | |
692 | if('.' == *s) | |
693 | ++dots; | |
694 | } | |
695 | ||
696 | if(!dots || bogus_server) | |
697 | return 1; | |
698 | ||
699 | return 0; | |
700 | } | |
701 | ||
702 | /* | |
703 | * server_exists() | |
704 | * | |
705 | * inputs - servername | |
706 | * output - 1 if server exists, 0 if doesnt exist | |
707 | */ | |
708 | struct Client * | |
709 | server_exists(const char *servername) | |
710 | { | |
711 | struct Client *target_p; | |
712 | dlink_node *ptr; | |
713 | ||
714 | DLINK_FOREACH(ptr, global_serv_list.head) | |
715 | { | |
716 | target_p = ptr->data; | |
717 | ||
718 | if(match(target_p->name, servername) || match(servername, target_p->name)) | |
719 | return target_p; | |
720 | } | |
721 | ||
722 | return NULL; | |
723 | } |