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1 | /* | |
2 | * ircd-ratbox: A slightly useful ircd. | |
3 | * s_serv.c: Server related functions. | |
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: s_serv.c 3550 2007-08-09 06:47:26Z nenolod $ | |
25 | */ | |
26 | ||
27 | #include "stdinc.h" | |
28 | ||
29 | #ifdef HAVE_LIBCRYPTO | |
30 | #include <openssl/rsa.h> | |
31 | #endif | |
32 | ||
33 | #include "s_serv.h" | |
34 | #include "class.h" | |
35 | #include "client.h" | |
36 | #include "common.h" | |
37 | #include "hash.h" | |
38 | #include "match.h" | |
39 | #include "ircd.h" | |
40 | #include "ircd_defs.h" | |
41 | #include "numeric.h" | |
42 | #include "packet.h" | |
43 | #include "res.h" | |
44 | #include "s_conf.h" | |
45 | #include "s_newconf.h" | |
46 | #include "logger.h" | |
47 | #include "s_stats.h" | |
48 | #include "s_user.h" | |
49 | #include "scache.h" | |
50 | #include "send.h" | |
51 | #include "client.h" | |
52 | #include "channel.h" /* chcap_usage_counts stuff... */ | |
53 | #include "hook.h" | |
54 | #include "msg.h" | |
55 | #include "reject.h" | |
56 | #include "sslproc.h" | |
57 | ||
58 | #ifndef INADDR_NONE | |
59 | #define INADDR_NONE ((unsigned int) 0xffffffff) | |
60 | #endif | |
61 | ||
62 | int MaxConnectionCount = 1; | |
63 | int MaxClientCount = 1; | |
64 | int refresh_user_links = 0; | |
65 | ||
66 | static char buf[BUFSIZE]; | |
67 | ||
68 | /* | |
69 | * list of recognized server capabilities. "TS" is not on the list | |
70 | * because all servers that we talk to already do TS, and the kludged | |
71 | * extra argument to "PASS" takes care of checking that. -orabidoo | |
72 | */ | |
73 | struct Capability captab[] = { | |
74 | /* name cap */ | |
75 | { "QS", CAP_QS }, | |
76 | { "EX", CAP_EX }, | |
77 | { "CHW", CAP_CHW}, | |
78 | { "IE", CAP_IE}, | |
79 | { "KLN", CAP_KLN}, | |
80 | { "KNOCK", CAP_KNOCK}, | |
81 | { "ZIP", CAP_ZIP}, | |
82 | { "TB", CAP_TB}, | |
83 | { "UNKLN", CAP_UNKLN}, | |
84 | { "CLUSTER", CAP_CLUSTER}, | |
85 | { "ENCAP", CAP_ENCAP }, | |
86 | { "SERVICES", CAP_SERVICE }, | |
87 | { "RSFNC", CAP_RSFNC }, | |
88 | { "SAVE", CAP_SAVE }, | |
89 | { "EUID", CAP_EUID }, | |
90 | { "EOPMOD", CAP_EOPMOD }, | |
91 | {0, 0} | |
92 | }; | |
93 | ||
94 | static CNCB serv_connect_callback; | |
95 | static CNCB serv_connect_ssl_callback; | |
96 | ||
97 | /* | |
98 | * hunt_server - Do the basic thing in delivering the message (command) | |
99 | * across the relays to the specific server (server) for | |
100 | * actions. | |
101 | * | |
102 | * Note: The command is a format string and *MUST* be | |
103 | * of prefixed style (e.g. ":%s COMMAND %s ..."). | |
104 | * Command can have only max 8 parameters. | |
105 | * | |
106 | * server parv[server] is the parameter identifying the | |
107 | * target server. | |
108 | * | |
109 | * *WARNING* | |
110 | * parv[server] is replaced with the pointer to the | |
111 | * real servername from the matched client (I'm lazy | |
112 | * now --msa). | |
113 | * | |
114 | * returns: (see #defines) | |
115 | */ | |
116 | int | |
117 | hunt_server(struct Client *client_p, struct Client *source_p, | |
118 | const char *command, int server, int parc, const char *parv[]) | |
119 | { | |
120 | struct Client *target_p; | |
121 | int wilds; | |
122 | rb_dlink_node *ptr; | |
123 | const char *old; | |
124 | char *new; | |
125 | ||
126 | /* | |
127 | * Assume it's me, if no server | |
128 | */ | |
129 | if(parc <= server || EmptyString(parv[server]) || | |
130 | match(parv[server], me.name) || (strcmp(parv[server], me.id) == 0)) | |
131 | return (HUNTED_ISME); | |
132 | ||
133 | new = LOCAL_COPY(parv[server]); | |
134 | ||
135 | /* | |
136 | * These are to pickup matches that would cause the following | |
137 | * message to go in the wrong direction while doing quick fast | |
138 | * non-matching lookups. | |
139 | */ | |
140 | if(MyClient(source_p)) | |
141 | target_p = find_named_client(new); | |
142 | else | |
143 | target_p = find_client(new); | |
144 | ||
145 | if(target_p) | |
146 | if(target_p->from == source_p->from && !MyConnect(target_p)) | |
147 | target_p = NULL; | |
148 | ||
149 | collapse(new); | |
150 | wilds = (strchr(new, '?') || strchr(new, '*')); | |
151 | ||
152 | /* | |
153 | * Again, if there are no wild cards involved in the server | |
154 | * name, use the hash lookup | |
155 | */ | |
156 | if(!target_p && wilds) | |
157 | { | |
158 | RB_DLINK_FOREACH(ptr, global_client_list.head) | |
159 | { | |
160 | if(match(new, ((struct Client *) (ptr->data))->name)) | |
161 | { | |
162 | target_p = ptr->data; | |
163 | break; | |
164 | } | |
165 | } | |
166 | } | |
167 | ||
168 | if(target_p && !IsRegistered(target_p)) | |
169 | target_p = NULL; | |
170 | ||
171 | if(target_p) | |
172 | { | |
173 | if(IsMe(target_p) || MyClient(target_p)) | |
174 | return HUNTED_ISME; | |
175 | ||
176 | old = parv[server]; | |
177 | parv[server] = get_id(target_p, target_p); | |
178 | ||
179 | sendto_one(target_p, command, get_id(source_p, target_p), | |
180 | parv[1], parv[2], parv[3], parv[4], parv[5], parv[6], parv[7], parv[8]); | |
181 | parv[server] = old; | |
182 | return (HUNTED_PASS); | |
183 | } | |
184 | ||
185 | if(MyClient(source_p) || !IsDigit(parv[server][0])) | |
186 | sendto_one_numeric(source_p, ERR_NOSUCHSERVER, | |
187 | form_str(ERR_NOSUCHSERVER), parv[server]); | |
188 | return (HUNTED_NOSUCH); | |
189 | } | |
190 | ||
191 | /* | |
192 | * try_connections - scan through configuration and try new connections. | |
193 | * Returns the calendar time when the next call to this | |
194 | * function should be made latest. (No harm done if this | |
195 | * is called earlier or later...) | |
196 | */ | |
197 | void | |
198 | try_connections(void *unused) | |
199 | { | |
200 | struct Client *client_p; | |
201 | struct server_conf *server_p = NULL; | |
202 | struct server_conf *tmp_p; | |
203 | struct Class *cltmp; | |
204 | rb_dlink_node *ptr; | |
205 | int connecting = FALSE; | |
206 | int confrq = 0; | |
207 | time_t next = 0; | |
208 | ||
209 | RB_DLINK_FOREACH(ptr, server_conf_list.head) | |
210 | { | |
211 | tmp_p = ptr->data; | |
212 | ||
213 | if(ServerConfIllegal(tmp_p) || !ServerConfAutoconn(tmp_p)) | |
214 | continue; | |
215 | ||
216 | /* don't allow ssl connections if ssl isn't setup */ | |
217 | if(ServerConfSSL(tmp_p) && (!ssl_ok || !get_ssld_count())) | |
218 | continue; | |
219 | ||
220 | cltmp = tmp_p->class; | |
221 | ||
222 | /* | |
223 | * Skip this entry if the use of it is still on hold until | |
224 | * future. Otherwise handle this entry (and set it on hold | |
225 | * until next time). Will reset only hold times, if already | |
226 | * made one successfull connection... [this algorithm is | |
227 | * a bit fuzzy... -- msa >;) ] | |
228 | */ | |
229 | if(tmp_p->hold > rb_current_time()) | |
230 | { | |
231 | if(next > tmp_p->hold || next == 0) | |
232 | next = tmp_p->hold; | |
233 | continue; | |
234 | } | |
235 | ||
236 | confrq = get_con_freq(cltmp); | |
237 | tmp_p->hold = rb_current_time() + confrq; | |
238 | ||
239 | /* | |
240 | * Found a CONNECT config with port specified, scan clients | |
241 | * and see if this server is already connected? | |
242 | */ | |
243 | client_p = find_server(NULL, tmp_p->name); | |
244 | ||
245 | if(!client_p && (CurrUsers(cltmp) < MaxUsers(cltmp)) && !connecting) | |
246 | { | |
247 | server_p = tmp_p; | |
248 | ||
249 | /* We connect only one at time... */ | |
250 | connecting = TRUE; | |
251 | } | |
252 | ||
253 | if((next > tmp_p->hold) || (next == 0)) | |
254 | next = tmp_p->hold; | |
255 | } | |
256 | ||
257 | /* TODO: change this to set active flag to 0 when added to event! --Habeeb */ | |
258 | if(GlobalSetOptions.autoconn == 0) | |
259 | return; | |
260 | ||
261 | if(!connecting) | |
262 | return; | |
263 | ||
264 | /* move this connect entry to end.. */ | |
265 | rb_dlinkDelete(&server_p->node, &server_conf_list); | |
266 | rb_dlinkAddTail(server_p, &server_p->node, &server_conf_list); | |
267 | ||
268 | /* | |
269 | * We used to only print this if serv_connect() actually | |
270 | * suceeded, but since rb_tcp_connect() can call the callback | |
271 | * immediately if there is an error, we were getting error messages | |
272 | * in the wrong order. SO, we just print out the activated line, | |
273 | * and let serv_connect() / serv_connect_callback() print an | |
274 | * error afterwards if it fails. | |
275 | * -- adrian | |
276 | */ | |
277 | sendto_realops_snomask(SNO_GENERAL, L_ALL, | |
278 | "Connection to %s activated", | |
279 | server_p->name); | |
280 | ||
281 | serv_connect(server_p, 0); | |
282 | } | |
283 | ||
284 | int | |
285 | check_server(const char *name, struct Client *client_p) | |
286 | { | |
287 | struct server_conf *server_p = NULL; | |
288 | struct server_conf *tmp_p; | |
289 | rb_dlink_node *ptr; | |
290 | int error = -1; | |
291 | ||
292 | s_assert(NULL != client_p); | |
293 | if(client_p == NULL) | |
294 | return error; | |
295 | ||
296 | if(!(client_p->localClient->passwd)) | |
297 | return -2; | |
298 | ||
299 | if(strlen(name) > HOSTLEN) | |
300 | return -4; | |
301 | ||
302 | RB_DLINK_FOREACH(ptr, server_conf_list.head) | |
303 | { | |
304 | tmp_p = ptr->data; | |
305 | ||
306 | if(ServerConfIllegal(tmp_p)) | |
307 | continue; | |
308 | ||
309 | if(!match(tmp_p->name, name)) | |
310 | continue; | |
311 | ||
312 | error = -3; | |
313 | ||
314 | /* XXX: Fix me for IPv6 */ | |
315 | /* XXX sockhost is the IPv4 ip as a string */ | |
316 | if(match(tmp_p->host, client_p->host) || | |
317 | match(tmp_p->host, client_p->sockhost)) | |
318 | { | |
319 | error = -2; | |
320 | ||
321 | if(ServerConfEncrypted(tmp_p)) | |
322 | { | |
323 | if(!strcmp(tmp_p->passwd, rb_crypt(client_p->localClient->passwd, | |
324 | tmp_p->passwd))) | |
325 | { | |
326 | server_p = tmp_p; | |
327 | break; | |
328 | } | |
329 | } | |
330 | else if(!strcmp(tmp_p->passwd, client_p->localClient->passwd)) | |
331 | { | |
332 | server_p = tmp_p; | |
333 | break; | |
334 | } | |
335 | } | |
336 | } | |
337 | ||
338 | if(server_p == NULL) | |
339 | return error; | |
340 | ||
341 | if(ServerConfSSL(server_p) && client_p->localClient->ssl_ctl == NULL) | |
342 | { | |
343 | return -5; | |
344 | } | |
345 | ||
346 | attach_server_conf(client_p, server_p); | |
347 | ||
348 | /* clear ZIP/TB if they support but we dont want them */ | |
349 | #ifdef HAVE_LIBZ | |
350 | if(!ServerConfCompressed(server_p)) | |
351 | #endif | |
352 | ClearCap(client_p, CAP_ZIP); | |
353 | ||
354 | if(!ServerConfTb(server_p)) | |
355 | ClearCap(client_p, CAP_TB); | |
356 | ||
357 | return 0; | |
358 | } | |
359 | ||
360 | /* | |
361 | * send_capabilities | |
362 | * | |
363 | * inputs - Client pointer to send to | |
364 | * - int flag of capabilities that this server has | |
365 | * output - NONE | |
366 | * side effects - send the CAPAB line to a server -orabidoo | |
367 | * | |
368 | */ | |
369 | void | |
370 | send_capabilities(struct Client *client_p, int cap_can_send) | |
371 | { | |
372 | struct Capability *cap; | |
373 | char msgbuf[BUFSIZE]; | |
374 | char *t; | |
375 | int tl; | |
376 | ||
377 | t = msgbuf; | |
378 | ||
379 | for (cap = captab; cap->name; ++cap) | |
380 | { | |
381 | if(cap->cap & cap_can_send) | |
382 | { | |
383 | tl = rb_sprintf(t, "%s ", cap->name); | |
384 | t += tl; | |
385 | } | |
386 | } | |
387 | ||
388 | t--; | |
389 | *t = '\0'; | |
390 | ||
391 | sendto_one(client_p, "CAPAB :%s", msgbuf); | |
392 | } | |
393 | ||
394 | /* burst_modes_TS6() | |
395 | * | |
396 | * input - client to burst to, channel name, list to burst, mode flag | |
397 | * output - | |
398 | * side effects - client is sent a list of +b, +e, or +I modes | |
399 | */ | |
400 | static void | |
401 | burst_modes_TS6(struct Client *client_p, struct Channel *chptr, | |
402 | rb_dlink_list *list, char flag) | |
403 | { | |
404 | rb_dlink_node *ptr; | |
405 | struct Ban *banptr; | |
406 | char *t; | |
407 | int tlen; | |
408 | int mlen; | |
409 | int cur_len; | |
410 | ||
411 | cur_len = mlen = rb_sprintf(buf, ":%s BMASK %ld %s %c :", | |
412 | me.id, (long) chptr->channelts, chptr->chname, flag); | |
413 | t = buf + mlen; | |
414 | ||
415 | RB_DLINK_FOREACH(ptr, list->head) | |
416 | { | |
417 | banptr = ptr->data; | |
418 | ||
419 | tlen = strlen(banptr->banstr) + 1; | |
420 | ||
421 | /* uh oh */ | |
422 | if(cur_len + tlen > BUFSIZE - 3) | |
423 | { | |
424 | /* the one we're trying to send doesnt fit at all! */ | |
425 | if(cur_len == mlen) | |
426 | { | |
427 | s_assert(0); | |
428 | continue; | |
429 | } | |
430 | ||
431 | /* chop off trailing space and send.. */ | |
432 | *(t-1) = '\0'; | |
433 | sendto_one(client_p, "%s", buf); | |
434 | cur_len = mlen; | |
435 | t = buf + mlen; | |
436 | } | |
437 | ||
438 | rb_sprintf(t, "%s ", banptr->banstr); | |
439 | t += tlen; | |
440 | cur_len += tlen; | |
441 | } | |
442 | ||
443 | /* cant ever exit the loop above without having modified buf, | |
444 | * chop off trailing space and send. | |
445 | */ | |
446 | *(t-1) = '\0'; | |
447 | sendto_one(client_p, "%s", buf); | |
448 | } | |
449 | ||
450 | /* | |
451 | * burst_TS6 | |
452 | * | |
453 | * inputs - client (server) to send nick towards | |
454 | * - client to send nick for | |
455 | * output - NONE | |
456 | * side effects - NICK message is sent towards given client_p | |
457 | */ | |
458 | static void | |
459 | burst_TS6(struct Client *client_p) | |
460 | { | |
461 | static char ubuf[12]; | |
462 | struct Client *target_p; | |
463 | struct Channel *chptr; | |
464 | struct membership *msptr; | |
465 | hook_data_client hclientinfo; | |
466 | hook_data_channel hchaninfo; | |
467 | rb_dlink_node *ptr; | |
468 | rb_dlink_node *uptr; | |
469 | char *t; | |
470 | int tlen, mlen; | |
471 | int cur_len = 0; | |
472 | ||
473 | hclientinfo.client = hchaninfo.client = client_p; | |
474 | ||
475 | RB_DLINK_FOREACH(ptr, global_client_list.head) | |
476 | { | |
477 | target_p = ptr->data; | |
478 | ||
479 | if(!IsPerson(target_p)) | |
480 | continue; | |
481 | ||
482 | send_umode(NULL, target_p, 0, 0, ubuf); | |
483 | if(!*ubuf) | |
484 | { | |
485 | ubuf[0] = '+'; | |
486 | ubuf[1] = '\0'; | |
487 | } | |
488 | ||
489 | if(IsCapable(client_p, CAP_EUID)) | |
490 | sendto_one(client_p, ":%s EUID %s %d %ld %s %s %s %s %s %s %s :%s", | |
491 | target_p->servptr->id, target_p->name, | |
492 | target_p->hopcount + 1, | |
493 | (long) target_p->tsinfo, ubuf, | |
494 | target_p->username, target_p->host, | |
495 | IsIPSpoof(target_p) ? "0" : target_p->sockhost, | |
496 | target_p->id, | |
497 | IsDynSpoof(target_p) ? target_p->orighost : "*", | |
498 | EmptyString(target_p->user->suser) ? "*" : target_p->user->suser, | |
499 | target_p->info); | |
500 | else | |
501 | sendto_one(client_p, ":%s UID %s %d %ld %s %s %s %s %s :%s", | |
502 | target_p->servptr->id, target_p->name, | |
503 | target_p->hopcount + 1, | |
504 | (long) target_p->tsinfo, ubuf, | |
505 | target_p->username, target_p->host, | |
506 | IsIPSpoof(target_p) ? "0" : target_p->sockhost, | |
507 | target_p->id, target_p->info); | |
508 | ||
509 | if(!EmptyString(target_p->certfp)) | |
510 | sendto_one(client_p, ":%s ENCAP * CERTFP :%s", | |
511 | use_id(target_p), target_p->certfp); | |
512 | ||
513 | if(!IsCapable(client_p, CAP_EUID)) | |
514 | { | |
515 | if(IsDynSpoof(target_p)) | |
516 | sendto_one(client_p, ":%s ENCAP * REALHOST %s", | |
517 | use_id(target_p), target_p->orighost); | |
518 | if(!EmptyString(target_p->user->suser)) | |
519 | sendto_one(client_p, ":%s ENCAP * LOGIN %s", | |
520 | use_id(target_p), target_p->user->suser); | |
521 | } | |
522 | ||
523 | if(ConfigFileEntry.burst_away && !EmptyString(target_p->user->away)) | |
524 | sendto_one(client_p, ":%s AWAY :%s", | |
525 | use_id(target_p), | |
526 | target_p->user->away); | |
527 | ||
528 | hclientinfo.target = target_p; | |
529 | call_hook(h_burst_client, &hclientinfo); | |
530 | } | |
531 | ||
532 | RB_DLINK_FOREACH(ptr, global_channel_list.head) | |
533 | { | |
534 | chptr = ptr->data; | |
535 | ||
536 | if(*chptr->chname != '#') | |
537 | continue; | |
538 | ||
539 | cur_len = mlen = rb_sprintf(buf, ":%s SJOIN %ld %s %s :", me.id, | |
540 | (long) chptr->channelts, chptr->chname, | |
541 | channel_modes(chptr, client_p)); | |
542 | ||
543 | t = buf + mlen; | |
544 | ||
545 | RB_DLINK_FOREACH(uptr, chptr->members.head) | |
546 | { | |
547 | msptr = uptr->data; | |
548 | ||
549 | tlen = strlen(use_id(msptr->client_p)) + 1; | |
550 | if(is_owner(msptr)) | |
551 | tlen++; | |
552 | if(is_chanop(msptr)) | |
553 | tlen++; | |
554 | if(is_halfop(msptr)) | |
555 | tlen++; | |
556 | if(is_voiced(msptr)) | |
557 | tlen++; | |
558 | ||
559 | if(cur_len + tlen >= BUFSIZE - 3) | |
560 | { | |
561 | *(t-1) = '\0'; | |
562 | sendto_one(client_p, "%s", buf); | |
563 | cur_len = mlen; | |
564 | t = buf + mlen; | |
565 | } | |
566 | ||
567 | rb_sprintf(t, "%s%s ", find_channel_status(msptr, 1), | |
568 | use_id(msptr->client_p)); | |
569 | ||
570 | cur_len += tlen; | |
571 | t += tlen; | |
572 | } | |
573 | ||
574 | if (rb_dlink_list_length(&chptr->members) > 0) | |
575 | { | |
576 | /* remove trailing space */ | |
577 | *(t-1) = '\0'; | |
578 | } | |
579 | sendto_one(client_p, "%s", buf); | |
580 | ||
581 | if(rb_dlink_list_length(&chptr->banlist) > 0) | |
582 | burst_modes_TS6(client_p, chptr, &chptr->banlist, 'b'); | |
583 | ||
584 | if(IsCapable(client_p, CAP_EX) && | |
585 | rb_dlink_list_length(&chptr->exceptlist) > 0) | |
586 | burst_modes_TS6(client_p, chptr, &chptr->exceptlist, 'e'); | |
587 | ||
588 | if(IsCapable(client_p, CAP_IE) && | |
589 | rb_dlink_list_length(&chptr->invexlist) > 0) | |
590 | burst_modes_TS6(client_p, chptr, &chptr->invexlist, 'I'); | |
591 | ||
592 | if(rb_dlink_list_length(&chptr->quietlist) > 0) | |
593 | burst_modes_TS6(client_p, chptr, &chptr->quietlist, 'q'); | |
594 | ||
595 | if(IsCapable(client_p, CAP_TB) && chptr->topic != NULL) | |
596 | sendto_one(client_p, ":%s TB %s %ld %s%s:%s", | |
597 | me.id, chptr->chname, (long) chptr->topic_time, | |
598 | ConfigChannel.burst_topicwho ? chptr->topic_info : "", | |
599 | ConfigChannel.burst_topicwho ? " " : "", | |
600 | chptr->topic); | |
601 | ||
602 | hchaninfo.chptr = chptr; | |
603 | call_hook(h_burst_channel, &hchaninfo); | |
604 | } | |
605 | ||
606 | hclientinfo.target = NULL; | |
607 | call_hook(h_burst_finished, &hclientinfo); | |
608 | } | |
609 | ||
610 | /* | |
611 | * show_capabilities - show current server capabilities | |
612 | * | |
613 | * inputs - pointer to an struct Client | |
614 | * output - pointer to static string | |
615 | * side effects - build up string representing capabilities of server listed | |
616 | */ | |
617 | const char * | |
618 | show_capabilities(struct Client *target_p) | |
619 | { | |
620 | static char msgbuf[BUFSIZE]; | |
621 | struct Capability *cap; | |
622 | ||
623 | if(has_id(target_p)) | |
624 | rb_strlcpy(msgbuf, " TS6", sizeof(msgbuf)); | |
625 | ||
626 | if(IsSSL(target_p)) | |
627 | rb_strlcat(msgbuf, " SSL", sizeof(msgbuf)); | |
628 | ||
629 | if(!IsServer(target_p) || !target_p->serv->caps) /* short circuit if no caps */ | |
630 | return msgbuf + 1; | |
631 | ||
632 | for (cap = captab; cap->cap; ++cap) | |
633 | { | |
634 | if(cap->cap & target_p->serv->caps) | |
635 | rb_snprintf_append(msgbuf, sizeof(msgbuf), " %s", cap->name); | |
636 | } | |
637 | ||
638 | return msgbuf + 1; | |
639 | } | |
640 | ||
641 | /* | |
642 | * server_estab | |
643 | * | |
644 | * inputs - pointer to a struct Client | |
645 | * output - | |
646 | * side effects - | |
647 | */ | |
648 | int | |
649 | server_estab(struct Client *client_p) | |
650 | { | |
651 | struct Client *target_p; | |
652 | struct server_conf *server_p; | |
653 | hook_data_client hdata; | |
654 | char *host; | |
655 | rb_dlink_node *ptr; | |
656 | char note[HOSTLEN + 15]; | |
657 | ||
658 | s_assert(NULL != client_p); | |
659 | if(client_p == NULL) | |
660 | return -1; | |
661 | ||
662 | host = client_p->name; | |
663 | ||
664 | if((server_p = client_p->localClient->att_sconf) == NULL) | |
665 | { | |
666 | /* This shouldn't happen, better tell the ops... -A1kmm */ | |
667 | sendto_realops_snomask(SNO_GENERAL, is_remote_connect(client_p) ? L_NETWIDE : L_ALL, | |
668 | "Warning: Lost connect{} block for server %s!", host); | |
669 | return exit_client(client_p, client_p, client_p, "Lost connect{} block!"); | |
670 | } | |
671 | ||
672 | /* We shouldn't have to check this, it should already done before | |
673 | * server_estab is called. -A1kmm | |
674 | */ | |
675 | if(client_p->localClient->passwd) | |
676 | { | |
677 | memset(client_p->localClient->passwd, 0, strlen(client_p->localClient->passwd)); | |
678 | rb_free(client_p->localClient->passwd); | |
679 | client_p->localClient->passwd = NULL; | |
680 | } | |
681 | ||
682 | /* Its got identd , since its a server */ | |
683 | SetGotId(client_p); | |
684 | ||
685 | /* If there is something in the serv_list, it might be this | |
686 | * connecting server.. | |
687 | */ | |
688 | if(!ServerInfo.hub && serv_list.head) | |
689 | { | |
690 | if(client_p != serv_list.head->data || serv_list.head->next) | |
691 | { | |
692 | ServerStats.is_ref++; | |
693 | sendto_one(client_p, "ERROR :I'm a leaf not a hub"); | |
694 | return exit_client(client_p, client_p, client_p, "I'm a leaf"); | |
695 | } | |
696 | } | |
697 | ||
698 | if(IsUnknown(client_p)) | |
699 | { | |
700 | /* | |
701 | * jdc -- 1. Use EmptyString(), not [0] index reference. | |
702 | * 2. Check ->spasswd, not ->passwd. | |
703 | */ | |
704 | if(!EmptyString(server_p->spasswd)) | |
705 | { | |
706 | sendto_one(client_p, "PASS %s TS %d :%s", | |
707 | server_p->spasswd, TS_CURRENT, me.id); | |
708 | } | |
709 | ||
710 | /* pass info to new server */ | |
711 | send_capabilities(client_p, default_server_capabs | |
712 | | (ServerConfCompressed(server_p) ? CAP_ZIP_SUPPORTED : 0) | |
713 | | (ServerConfTb(server_p) ? CAP_TB : 0)); | |
714 | ||
715 | sendto_one(client_p, "SERVER %s 1 :%s%s", | |
716 | me.name, | |
717 | ConfigServerHide.hidden ? "(H) " : "", | |
718 | (me.info[0]) ? (me.info) : "IRCers United"); | |
719 | } | |
720 | ||
721 | if(!rb_set_buffers(client_p->localClient->F, READBUF_SIZE)) | |
722 | ilog_error("rb_set_buffers failed for server"); | |
723 | ||
724 | /* Enable compression now */ | |
725 | if(IsCapable(client_p, CAP_ZIP)) | |
726 | { | |
727 | start_zlib_session(client_p); | |
728 | } | |
729 | sendto_one(client_p, "SVINFO %d %d 0 :%ld", TS_CURRENT, TS_MIN, (long int)rb_current_time()); | |
730 | ||
731 | client_p->servptr = &me; | |
732 | ||
733 | if(IsAnyDead(client_p)) | |
734 | return CLIENT_EXITED; | |
735 | ||
736 | SetServer(client_p); | |
737 | ||
738 | /* Update the capability combination usage counts */ | |
739 | set_chcap_usage_counts(client_p); | |
740 | ||
741 | rb_dlinkAdd(client_p, &client_p->lnode, &me.serv->servers); | |
742 | rb_dlinkMoveNode(&client_p->localClient->tnode, &unknown_list, &serv_list); | |
743 | rb_dlinkAddTailAlloc(client_p, &global_serv_list); | |
744 | ||
745 | if(has_id(client_p)) | |
746 | add_to_id_hash(client_p->id, client_p); | |
747 | ||
748 | add_to_client_hash(client_p->name, client_p); | |
749 | /* doesnt duplicate client_p->serv if allocated this struct already */ | |
750 | make_server(client_p); | |
751 | ||
752 | client_p->serv->caps = client_p->localClient->caps; | |
753 | ||
754 | if(client_p->localClient->fullcaps) | |
755 | { | |
756 | client_p->serv->fullcaps = rb_strdup(client_p->localClient->fullcaps); | |
757 | rb_free(client_p->localClient->fullcaps); | |
758 | client_p->localClient->fullcaps = NULL; | |
759 | } | |
760 | ||
761 | client_p->serv->nameinfo = scache_connect(client_p->name, client_p->info, IsHidden(client_p)); | |
762 | client_p->localClient->firsttime = rb_current_time(); | |
763 | /* fixing eob timings.. -gnp */ | |
764 | ||
765 | if((rb_dlink_list_length(&lclient_list) + rb_dlink_list_length(&serv_list)) > | |
766 | (unsigned long)MaxConnectionCount) | |
767 | MaxConnectionCount = rb_dlink_list_length(&lclient_list) + | |
768 | rb_dlink_list_length(&serv_list); | |
769 | ||
770 | /* Show the real host/IP to admins */ | |
771 | sendto_realops_snomask(SNO_GENERAL, L_ALL, | |
772 | "Link with %s established: (%s) link", | |
773 | client_p->name, | |
774 | show_capabilities(client_p)); | |
775 | ||
776 | ilog(L_SERVER, "Link with %s established: (%s) link", | |
777 | log_client_name(client_p, SHOW_IP), show_capabilities(client_p)); | |
778 | ||
779 | hdata.client = &me; | |
780 | hdata.target = client_p; | |
781 | call_hook(h_server_introduced, &hdata); | |
782 | ||
783 | rb_snprintf(note, sizeof(note), "Server: %s", client_p->name); | |
784 | rb_note(client_p->localClient->F, note); | |
785 | ||
786 | /* | |
787 | ** Old sendto_serv_but_one() call removed because we now | |
788 | ** need to send different names to different servers | |
789 | ** (domain name matching) Send new server to other servers. | |
790 | */ | |
791 | RB_DLINK_FOREACH(ptr, serv_list.head) | |
792 | { | |
793 | target_p = ptr->data; | |
794 | ||
795 | if(target_p == client_p) | |
796 | continue; | |
797 | ||
798 | if(has_id(target_p) && has_id(client_p)) | |
799 | { | |
800 | sendto_one(target_p, ":%s SID %s 2 %s :%s%s", | |
801 | me.id, client_p->name, client_p->id, | |
802 | IsHidden(client_p) ? "(H) " : "", client_p->info); | |
803 | ||
804 | if(IsCapable(target_p, CAP_ENCAP) && | |
805 | !EmptyString(client_p->serv->fullcaps)) | |
806 | sendto_one(target_p, ":%s ENCAP * GCAP :%s", | |
807 | client_p->id, client_p->serv->fullcaps); | |
808 | } | |
809 | else | |
810 | { | |
811 | sendto_one(target_p, ":%s SERVER %s 2 :%s%s", | |
812 | me.name, client_p->name, | |
813 | IsHidden(client_p) ? "(H) " : "", client_p->info); | |
814 | ||
815 | if(IsCapable(target_p, CAP_ENCAP) && | |
816 | !EmptyString(client_p->serv->fullcaps)) | |
817 | sendto_one(target_p, ":%s ENCAP * GCAP :%s", | |
818 | client_p->name, client_p->serv->fullcaps); | |
819 | } | |
820 | } | |
821 | ||
822 | /* | |
823 | ** Pass on my client information to the new server | |
824 | ** | |
825 | ** First, pass only servers (idea is that if the link gets | |
826 | ** cancelled beacause the server was already there, | |
827 | ** there are no NICK's to be cancelled...). Of course, | |
828 | ** if cancellation occurs, all this info is sent anyway, | |
829 | ** and I guess the link dies when a read is attempted...? --msa | |
830 | ** | |
831 | ** Note: Link cancellation to occur at this point means | |
832 | ** that at least two servers from my fragment are building | |
833 | ** up connection this other fragment at the same time, it's | |
834 | ** a race condition, not the normal way of operation... | |
835 | ** | |
836 | ** ALSO NOTE: using the get_client_name for server names-- | |
837 | ** see previous *WARNING*!!! (Also, original inpath | |
838 | ** is destroyed...) | |
839 | */ | |
840 | RB_DLINK_FOREACH(ptr, global_serv_list.head) | |
841 | { | |
842 | target_p = ptr->data; | |
843 | ||
844 | /* target_p->from == target_p for target_p == client_p */ | |
845 | if(IsMe(target_p) || target_p->from == client_p) | |
846 | continue; | |
847 | ||
848 | /* presumption, if target has an id, so does its uplink */ | |
849 | if(has_id(client_p) && has_id(target_p)) | |
850 | sendto_one(client_p, ":%s SID %s %d %s :%s%s", | |
851 | target_p->servptr->id, target_p->name, | |
852 | target_p->hopcount + 1, target_p->id, | |
853 | IsHidden(target_p) ? "(H) " : "", target_p->info); | |
854 | else | |
855 | sendto_one(client_p, ":%s SERVER %s %d :%s%s", | |
856 | target_p->servptr->name, | |
857 | target_p->name, target_p->hopcount + 1, | |
858 | IsHidden(target_p) ? "(H) " : "", target_p->info); | |
859 | ||
860 | if(IsCapable(client_p, CAP_ENCAP) && | |
861 | !EmptyString(target_p->serv->fullcaps)) | |
862 | sendto_one(client_p, ":%s ENCAP * GCAP :%s", | |
863 | get_id(target_p, client_p), | |
864 | target_p->serv->fullcaps); | |
865 | } | |
866 | ||
867 | burst_TS6(client_p); | |
868 | ||
869 | /* Always send a PING after connect burst is done */ | |
870 | sendto_one(client_p, "PING :%s", get_id(&me, client_p)); | |
871 | ||
872 | free_pre_client(client_p); | |
873 | ||
874 | send_pop_queue(client_p); | |
875 | ||
876 | return 0; | |
877 | } | |
878 | ||
879 | /* | |
880 | * New server connection code | |
881 | * Based upon the stuff floating about in s_bsd.c | |
882 | * -- adrian | |
883 | */ | |
884 | ||
885 | static int | |
886 | serv_connect_resolved(struct Client *client_p) | |
887 | { | |
888 | struct rb_sockaddr_storage myipnum; | |
889 | char vhoststr[HOSTIPLEN]; | |
890 | struct server_conf *server_p; | |
891 | uint16_t port; | |
892 | ||
893 | if((server_p = client_p->localClient->att_sconf) == NULL) | |
894 | { | |
895 | sendto_realops_snomask(SNO_GENERAL, is_remote_connect(client_p) ? L_NETWIDE : L_ALL, "Lost connect{} block for %s", | |
896 | client_p->name); | |
897 | exit_client(client_p, client_p, &me, "Lost connect{} block"); | |
898 | return 0; | |
899 | } | |
900 | ||
901 | #ifdef RB_IPV6 | |
902 | if(client_p->localClient->ip.ss_family == AF_INET6) | |
903 | port = ntohs(((struct sockaddr_in6 *)&client_p->localClient->ip)->sin6_port); | |
904 | else | |
905 | #endif | |
906 | port = ntohs(((struct sockaddr_in *)&client_p->localClient->ip)->sin_port); | |
907 | ||
908 | if(ServerConfVhosted(server_p)) | |
909 | { | |
910 | memcpy(&myipnum, &server_p->my_ipnum, sizeof(myipnum)); | |
911 | ((struct sockaddr_in *)&myipnum)->sin_port = 0; | |
912 | myipnum.ss_family = server_p->aftype; | |
913 | ||
914 | } | |
915 | else if(server_p->aftype == AF_INET && ServerInfo.specific_ipv4_vhost) | |
916 | { | |
917 | memcpy(&myipnum, &ServerInfo.ip, sizeof(myipnum)); | |
918 | ((struct sockaddr_in *)&myipnum)->sin_port = 0; | |
919 | myipnum.ss_family = AF_INET; | |
920 | SET_SS_LEN(&myipnum, sizeof(struct sockaddr_in)); | |
921 | } | |
922 | ||
923 | #ifdef RB_IPV6 | |
924 | else if((server_p->aftype == AF_INET6) && ServerInfo.specific_ipv6_vhost) | |
925 | { | |
926 | memcpy(&myipnum, &ServerInfo.ip6, sizeof(myipnum)); | |
927 | ((struct sockaddr_in6 *)&myipnum)->sin6_port = 0; | |
928 | myipnum.ss_family = AF_INET6; | |
929 | SET_SS_LEN(&myipnum, sizeof(struct sockaddr_in6)); | |
930 | } | |
931 | #endif | |
932 | else | |
933 | { | |
934 | /* log */ | |
935 | ilog(L_SERVER, "Connecting to %s[%s] port %d (%s)", client_p->name, client_p->sockhost, port, | |
936 | #ifdef RB_IPV6 | |
937 | server_p->aftype == AF_INET6 ? "IPv6" : | |
938 | #endif | |
939 | (server_p->aftype == AF_INET ? "IPv4" : "?")); | |
940 | ||
941 | if(ServerConfSSL(server_p)) | |
942 | { | |
943 | rb_connect_tcp(client_p->localClient->F, (struct sockaddr *)&client_p->localClient->ip, | |
944 | NULL, 0, serv_connect_ssl_callback, | |
945 | client_p, ConfigFileEntry.connect_timeout); | |
946 | } | |
947 | else | |
948 | rb_connect_tcp(client_p->localClient->F, (struct sockaddr *)&client_p->localClient->ip, | |
949 | NULL, 0, serv_connect_callback, | |
950 | client_p, ConfigFileEntry.connect_timeout); | |
951 | return 1; | |
952 | } | |
953 | ||
954 | /* log */ | |
955 | rb_inet_ntop_sock((struct sockaddr *)&myipnum, vhoststr, sizeof vhoststr); | |
956 | ilog(L_SERVER, "Connecting to %s[%s] port %d (%s) (vhost %s)", client_p->name, client_p->sockhost, port, | |
957 | #ifdef RB_IPV6 | |
958 | server_p->aftype == AF_INET6 ? "IPv6" : | |
959 | #endif | |
960 | (server_p->aftype == AF_INET ? "IPv4" : "?"), vhoststr); | |
961 | ||
962 | ||
963 | if(ServerConfSSL(server_p)) | |
964 | rb_connect_tcp(client_p->localClient->F, (struct sockaddr *)&client_p->localClient->ip, | |
965 | (struct sockaddr *) &myipnum, | |
966 | GET_SS_LEN(&myipnum), serv_connect_ssl_callback, client_p, | |
967 | ConfigFileEntry.connect_timeout); | |
968 | else | |
969 | rb_connect_tcp(client_p->localClient->F, (struct sockaddr *)&client_p->localClient->ip, | |
970 | (struct sockaddr *) &myipnum, | |
971 | GET_SS_LEN(&myipnum), serv_connect_callback, client_p, | |
972 | ConfigFileEntry.connect_timeout); | |
973 | ||
974 | return 1; | |
975 | } | |
976 | ||
977 | static void | |
978 | serv_connect_dns_callback(void *vptr, struct DNSReply *reply) | |
979 | { | |
980 | struct Client *client_p = vptr; | |
981 | uint16_t port; | |
982 | ||
983 | rb_free(client_p->localClient->dnsquery); | |
984 | client_p->localClient->dnsquery = NULL; | |
985 | ||
986 | if (reply == NULL) | |
987 | { | |
988 | sendto_realops_snomask(SNO_GENERAL, is_remote_connect(client_p) ? L_NETWIDE : L_ALL, "Cannot resolve hostname for %s", | |
989 | client_p->name); | |
990 | ilog(L_SERVER, "Cannot resolve hostname for %s", | |
991 | log_client_name(client_p, HIDE_IP)); | |
992 | exit_client(client_p, client_p, &me, "Cannot resolve hostname"); | |
993 | return; | |
994 | } | |
995 | #ifdef RB_IPV6 | |
996 | if(reply->addr.ss_family == AF_INET6) | |
997 | port = ((struct sockaddr_in6 *)&client_p->localClient->ip)->sin6_port; | |
998 | else | |
999 | #endif | |
1000 | port = ((struct sockaddr_in *)&client_p->localClient->ip)->sin_port; | |
1001 | memcpy(&client_p->localClient->ip, &reply->addr, sizeof(client_p->localClient->ip)); | |
1002 | #ifdef RB_IPV6 | |
1003 | if(reply->addr.ss_family == AF_INET6) | |
1004 | ((struct sockaddr_in6 *)&client_p->localClient->ip)->sin6_port = port; | |
1005 | else | |
1006 | #endif | |
1007 | ((struct sockaddr_in *)&client_p->localClient->ip)->sin_port = port; | |
1008 | /* Set sockhost properly now -- jilles */ | |
1009 | rb_inet_ntop_sock((struct sockaddr *)&client_p->localClient->ip, | |
1010 | client_p->sockhost, sizeof client_p->sockhost); | |
1011 | serv_connect_resolved(client_p); | |
1012 | } | |
1013 | ||
1014 | /* | |
1015 | * serv_connect() - initiate a server connection | |
1016 | * | |
1017 | * inputs - pointer to conf | |
1018 | * - pointer to client doing the connet | |
1019 | * output - | |
1020 | * side effects - | |
1021 | * | |
1022 | * This code initiates a connection to a server. It first checks to make | |
1023 | * sure the given server exists. If this is the case, it creates a socket, | |
1024 | * creates a client, saves the socket information in the client, and | |
1025 | * initiates a connection to the server through rb_connect_tcp(). The | |
1026 | * completion of this goes through serv_completed_connection(). | |
1027 | * | |
1028 | * We return 1 if the connection is attempted, since we don't know whether | |
1029 | * it suceeded or not, and 0 if it fails in here somewhere. | |
1030 | */ | |
1031 | int | |
1032 | serv_connect(struct server_conf *server_p, struct Client *by) | |
1033 | { | |
1034 | struct Client *client_p; | |
1035 | struct rb_sockaddr_storage theiripnum; | |
1036 | rb_fde_t *F; | |
1037 | char note[HOSTLEN + 10]; | |
1038 | ||
1039 | s_assert(server_p != NULL); | |
1040 | if(server_p == NULL) | |
1041 | return 0; | |
1042 | ||
1043 | /* | |
1044 | * Make sure this server isn't already connected | |
1045 | */ | |
1046 | if((client_p = find_server(NULL, server_p->name))) | |
1047 | { | |
1048 | sendto_realops_snomask(SNO_GENERAL, L_ALL, | |
1049 | "Server %s already present from %s", | |
1050 | server_p->name, client_p->name); | |
1051 | if(by && IsPerson(by) && !MyClient(by)) | |
1052 | sendto_one_notice(by, ":Server %s already present from %s", | |
1053 | server_p->name, client_p->name); | |
1054 | return 0; | |
1055 | } | |
1056 | ||
1057 | /* create a socket for the server connection */ | |
1058 | if((F = rb_socket(server_p->aftype, SOCK_STREAM, 0, NULL)) == NULL) | |
1059 | { | |
1060 | ilog_error("opening a stream socket"); | |
1061 | return 0; | |
1062 | } | |
1063 | ||
1064 | rb_snprintf(note, sizeof note, "Server: %s", server_p->name); | |
1065 | rb_note(F, note); | |
1066 | ||
1067 | /* Create a local client */ | |
1068 | client_p = make_client(NULL); | |
1069 | ||
1070 | /* Copy in the server, hostname, fd | |
1071 | * The sockhost may be a hostname, this will be corrected later | |
1072 | * -- jilles | |
1073 | */ | |
1074 | rb_strlcpy(client_p->name, server_p->name, sizeof(client_p->name)); | |
1075 | rb_strlcpy(client_p->host, server_p->host, sizeof(client_p->host)); | |
1076 | rb_strlcpy(client_p->sockhost, server_p->host, sizeof(client_p->sockhost)); | |
1077 | client_p->localClient->F = F; | |
1078 | add_to_cli_fd_hash(client_p); | |
1079 | ||
1080 | /* | |
1081 | * Set up the initial server evilness, ripped straight from | |
1082 | * connect_server(), so don't blame me for it being evil. | |
1083 | * -- adrian | |
1084 | */ | |
1085 | ||
1086 | if(!rb_set_buffers(client_p->localClient->F, READBUF_SIZE)) | |
1087 | { | |
1088 | ilog_error("setting the buffer size for a server connection"); | |
1089 | } | |
1090 | ||
1091 | /* | |
1092 | * Attach config entries to client here rather than in | |
1093 | * serv_connect_callback(). This to avoid null pointer references. | |
1094 | */ | |
1095 | attach_server_conf(client_p, server_p); | |
1096 | ||
1097 | /* | |
1098 | * at this point we have a connection in progress and C/N lines | |
1099 | * attached to the client, the socket info should be saved in the | |
1100 | * client and it should either be resolved or have a valid address. | |
1101 | * | |
1102 | * The socket has been connected or connect is in progress. | |
1103 | */ | |
1104 | make_server(client_p); | |
1105 | if(by && IsPerson(by)) | |
1106 | { | |
1107 | strcpy(client_p->serv->by, by->name); | |
1108 | if(client_p->serv->user) | |
1109 | free_user(client_p->serv->user, NULL); | |
1110 | client_p->serv->user = by->user; | |
1111 | by->user->refcnt++; | |
1112 | } | |
1113 | else | |
1114 | { | |
1115 | strcpy(client_p->serv->by, "AutoConn."); | |
1116 | if(client_p->serv->user) | |
1117 | free_user(client_p->serv->user, NULL); | |
1118 | client_p->serv->user = NULL; | |
1119 | } | |
1120 | SetConnecting(client_p); | |
1121 | rb_dlinkAddTail(client_p, &client_p->node, &global_client_list); | |
1122 | ||
1123 | if (rb_inet_pton_sock(server_p->host, (struct sockaddr *)&theiripnum) > 0) | |
1124 | { | |
1125 | memcpy(&client_p->localClient->ip, &theiripnum, sizeof(client_p->localClient->ip)); | |
1126 | #ifdef RB_IPV6 | |
1127 | if(theiripnum.ss_family == AF_INET6) | |
1128 | ((struct sockaddr_in6 *)&client_p->localClient->ip)->sin6_port = htons(server_p->port); | |
1129 | else | |
1130 | #endif | |
1131 | ((struct sockaddr_in *)&client_p->localClient->ip)->sin_port = htons(server_p->port); | |
1132 | ||
1133 | return serv_connect_resolved(client_p); | |
1134 | } | |
1135 | else | |
1136 | { | |
1137 | #ifdef RB_IPV6 | |
1138 | if(theiripnum.ss_family == AF_INET6) | |
1139 | ((struct sockaddr_in6 *)&client_p->localClient->ip)->sin6_port = htons(server_p->port); | |
1140 | else | |
1141 | #endif | |
1142 | ((struct sockaddr_in *)&client_p->localClient->ip)->sin_port = htons(server_p->port); | |
1143 | ||
1144 | client_p->localClient->dnsquery = rb_malloc(sizeof(struct DNSQuery)); | |
1145 | client_p->localClient->dnsquery->ptr = client_p; | |
1146 | client_p->localClient->dnsquery->callback = serv_connect_dns_callback; | |
1147 | gethost_byname_type(server_p->host, client_p->localClient->dnsquery, | |
1148 | #ifdef RB_IPV6 | |
1149 | server_p->aftype == AF_INET6 ? T_AAAA : | |
1150 | #endif | |
1151 | T_A); | |
1152 | return 1; | |
1153 | } | |
1154 | } | |
1155 | ||
1156 | static void | |
1157 | serv_connect_ssl_callback(rb_fde_t *F, int status, void *data) | |
1158 | { | |
1159 | struct Client *client_p = data; | |
1160 | rb_fde_t *xF[2]; | |
1161 | rb_connect_sockaddr(F, (struct sockaddr *)&client_p->localClient->ip, sizeof(client_p->localClient->ip)); | |
1162 | if(status != RB_OK) | |
1163 | { | |
1164 | /* Print error message, just like non-SSL. */ | |
1165 | serv_connect_callback(F, status, data); | |
1166 | return; | |
1167 | } | |
1168 | if(rb_socketpair(AF_UNIX, SOCK_STREAM, 0, &xF[0], &xF[1], "Outgoing ssld connection") == -1) | |
1169 | { | |
1170 | ilog_error("rb_socketpair failed for server"); | |
1171 | serv_connect_callback(F, RB_ERROR, data); | |
1172 | return; | |
1173 | ||
1174 | } | |
1175 | del_from_cli_fd_hash(client_p); | |
1176 | client_p->localClient->F = xF[0]; | |
1177 | add_to_cli_fd_hash(client_p); | |
1178 | ||
1179 | client_p->localClient->ssl_ctl = start_ssld_connect(F, xF[1], rb_get_fd(xF[0])); | |
1180 | SetSSL(client_p); | |
1181 | serv_connect_callback(client_p->localClient->F, RB_OK, client_p); | |
1182 | } | |
1183 | ||
1184 | /* | |
1185 | * serv_connect_callback() - complete a server connection. | |
1186 | * | |
1187 | * This routine is called after the server connection attempt has | |
1188 | * completed. If unsucessful, an error is sent to ops and the client | |
1189 | * is closed. If sucessful, it goes through the initialisation/check | |
1190 | * procedures, the capabilities are sent, and the socket is then | |
1191 | * marked for reading. | |
1192 | */ | |
1193 | static void | |
1194 | serv_connect_callback(rb_fde_t *F, int status, void *data) | |
1195 | { | |
1196 | struct Client *client_p = data; | |
1197 | struct server_conf *server_p; | |
1198 | char *errstr; | |
1199 | ||
1200 | /* First, make sure its a real client! */ | |
1201 | s_assert(client_p != NULL); | |
1202 | s_assert(client_p->localClient->F == F); | |
1203 | ||
1204 | if(client_p == NULL) | |
1205 | return; | |
1206 | ||
1207 | /* while we were waiting for the callback, its possible this already | |
1208 | * linked in.. --fl | |
1209 | */ | |
1210 | if(find_server(NULL, client_p->name) != NULL) | |
1211 | { | |
1212 | exit_client(client_p, client_p, &me, "Server Exists"); | |
1213 | return; | |
1214 | } | |
1215 | ||
1216 | if(client_p->localClient->ssl_ctl == NULL) | |
1217 | rb_connect_sockaddr(F, (struct sockaddr *)&client_p->localClient->ip, sizeof(client_p->localClient->ip)); | |
1218 | ||
1219 | /* Check the status */ | |
1220 | if(status != RB_OK) | |
1221 | { | |
1222 | /* COMM_ERR_TIMEOUT wont have an errno associated with it, | |
1223 | * the others will.. --fl | |
1224 | */ | |
1225 | if(status == RB_ERR_TIMEOUT) | |
1226 | { | |
1227 | sendto_realops_snomask(SNO_GENERAL, is_remote_connect(client_p) ? L_NETWIDE : L_ALL, | |
1228 | "Error connecting to %s[%s]: %s", | |
1229 | client_p->name, | |
1230 | "255.255.255.255", | |
1231 | rb_errstr(status)); | |
1232 | ilog(L_SERVER, "Error connecting to %s[%s]: %s", | |
1233 | client_p->name, client_p->sockhost, | |
1234 | rb_errstr(status)); | |
1235 | } | |
1236 | else | |
1237 | { | |
1238 | errstr = strerror(rb_get_sockerr(F)); | |
1239 | sendto_realops_snomask(SNO_GENERAL, is_remote_connect(client_p) ? L_NETWIDE : L_ALL, | |
1240 | "Error connecting to %s[%s]: %s (%s)", | |
1241 | client_p->name, | |
1242 | "255.255.255.255", | |
1243 | rb_errstr(status), errstr); | |
1244 | ilog(L_SERVER, "Error connecting to %s[%s]: %s (%s)", | |
1245 | client_p->name, client_p->sockhost, | |
1246 | rb_errstr(status), errstr); | |
1247 | } | |
1248 | ||
1249 | exit_client(client_p, client_p, &me, rb_errstr(status)); | |
1250 | return; | |
1251 | } | |
1252 | ||
1253 | /* COMM_OK, so continue the connection procedure */ | |
1254 | /* Get the C/N lines */ | |
1255 | if((server_p = client_p->localClient->att_sconf) == NULL) | |
1256 | { | |
1257 | sendto_realops_snomask(SNO_GENERAL, is_remote_connect(client_p) ? L_NETWIDE : L_ALL, "Lost connect{} block for %s", | |
1258 | client_p->name); | |
1259 | exit_client(client_p, client_p, &me, "Lost connect{} block"); | |
1260 | return; | |
1261 | } | |
1262 | ||
1263 | /* Next, send the initial handshake */ | |
1264 | SetHandshake(client_p); | |
1265 | ||
1266 | if(!EmptyString(server_p->spasswd)) | |
1267 | { | |
1268 | sendto_one(client_p, "PASS %s TS %d :%s", | |
1269 | server_p->spasswd, TS_CURRENT, me.id); | |
1270 | } | |
1271 | ||
1272 | /* pass my info to the new server */ | |
1273 | send_capabilities(client_p, default_server_capabs | |
1274 | | (ServerConfCompressed(server_p) ? CAP_ZIP_SUPPORTED : 0) | |
1275 | | (ServerConfTb(server_p) ? CAP_TB : 0)); | |
1276 | ||
1277 | sendto_one(client_p, "SERVER %s 1 :%s%s", | |
1278 | me.name, | |
1279 | ConfigServerHide.hidden ? "(H) " : "", me.info); | |
1280 | ||
1281 | /* | |
1282 | * If we've been marked dead because a send failed, just exit | |
1283 | * here now and save everyone the trouble of us ever existing. | |
1284 | */ | |
1285 | if(IsAnyDead(client_p)) | |
1286 | { | |
1287 | sendto_realops_snomask(SNO_GENERAL, is_remote_connect(client_p) ? L_NETWIDE : L_ALL, | |
1288 | "%s went dead during handshake", client_p->name); | |
1289 | exit_client(client_p, client_p, &me, "Went dead during handshake"); | |
1290 | return; | |
1291 | } | |
1292 | ||
1293 | /* don't move to serv_list yet -- we haven't sent a burst! */ | |
1294 | ||
1295 | /* If we get here, we're ok, so lets start reading some data */ | |
1296 | read_packet(F, client_p); | |
1297 | } |