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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 | { "BAN", CAP_BAN }, | |
92 | {0, 0} | |
93 | }; | |
94 | ||
95 | static CNCB serv_connect_callback; | |
96 | static CNCB serv_connect_ssl_callback; | |
97 | ||
98 | /* | |
99 | * hunt_server - Do the basic thing in delivering the message (command) | |
100 | * across the relays to the specific server (server) for | |
101 | * actions. | |
102 | * | |
103 | * Note: The command is a format string and *MUST* be | |
104 | * of prefixed style (e.g. ":%s COMMAND %s ..."). | |
105 | * Command can have only max 8 parameters. | |
106 | * | |
107 | * server parv[server] is the parameter identifying the | |
108 | * target server. | |
109 | * | |
110 | * *WARNING* | |
111 | * parv[server] is replaced with the pointer to the | |
112 | * real servername from the matched client (I'm lazy | |
113 | * now --msa). | |
114 | * | |
115 | * returns: (see #defines) | |
116 | */ | |
117 | int | |
118 | hunt_server(struct Client *client_p, struct Client *source_p, | |
119 | const char *command, int server, int parc, const char *parv[]) | |
120 | { | |
121 | struct Client *target_p; | |
122 | int wilds; | |
123 | rb_dlink_node *ptr; | |
124 | const char *old; | |
125 | char *new; | |
126 | ||
127 | /* | |
128 | * Assume it's me, if no server | |
129 | */ | |
130 | if(parc <= server || EmptyString(parv[server]) || | |
131 | match(parv[server], me.name) || (strcmp(parv[server], me.id) == 0)) | |
132 | return (HUNTED_ISME); | |
133 | ||
134 | new = LOCAL_COPY(parv[server]); | |
135 | ||
136 | /* | |
137 | * These are to pickup matches that would cause the following | |
138 | * message to go in the wrong direction while doing quick fast | |
139 | * non-matching lookups. | |
140 | */ | |
141 | if(MyClient(source_p)) | |
142 | target_p = find_named_client(new); | |
143 | else | |
144 | target_p = find_client(new); | |
145 | ||
146 | if(target_p) | |
147 | if(target_p->from == source_p->from && !MyConnect(target_p)) | |
148 | target_p = NULL; | |
149 | ||
150 | collapse(new); | |
151 | wilds = (strchr(new, '?') || strchr(new, '*')); | |
152 | ||
153 | /* | |
154 | * Again, if there are no wild cards involved in the server | |
155 | * name, use the hash lookup | |
156 | */ | |
157 | if(!target_p && wilds) | |
158 | { | |
159 | RB_DLINK_FOREACH(ptr, global_client_list.head) | |
160 | { | |
161 | if(match(new, ((struct Client *) (ptr->data))->name)) | |
162 | { | |
163 | target_p = ptr->data; | |
164 | break; | |
165 | } | |
166 | } | |
167 | } | |
168 | ||
169 | if(target_p && !IsRegistered(target_p)) | |
170 | target_p = NULL; | |
171 | ||
172 | if(target_p) | |
173 | { | |
174 | if(IsMe(target_p) || MyClient(target_p)) | |
175 | return HUNTED_ISME; | |
176 | ||
177 | old = parv[server]; | |
178 | parv[server] = get_id(target_p, target_p); | |
179 | ||
180 | sendto_one(target_p, command, get_id(source_p, target_p), | |
181 | parv[1], parv[2], parv[3], parv[4], parv[5], parv[6], parv[7], parv[8]); | |
182 | parv[server] = old; | |
183 | return (HUNTED_PASS); | |
184 | } | |
185 | ||
186 | if(MyClient(source_p) || !IsDigit(parv[server][0])) | |
187 | sendto_one_numeric(source_p, ERR_NOSUCHSERVER, | |
188 | form_str(ERR_NOSUCHSERVER), parv[server]); | |
189 | return (HUNTED_NOSUCH); | |
190 | } | |
191 | ||
192 | /* | |
193 | * try_connections - scan through configuration and try new connections. | |
194 | * Returns the calendar time when the next call to this | |
195 | * function should be made latest. (No harm done if this | |
196 | * is called earlier or later...) | |
197 | */ | |
198 | void | |
199 | try_connections(void *unused) | |
200 | { | |
201 | struct Client *client_p; | |
202 | struct server_conf *server_p = NULL; | |
203 | struct server_conf *tmp_p; | |
204 | struct Class *cltmp; | |
205 | rb_dlink_node *ptr; | |
206 | int connecting = FALSE; | |
207 | int confrq = 0; | |
208 | time_t next = 0; | |
209 | ||
210 | RB_DLINK_FOREACH(ptr, server_conf_list.head) | |
211 | { | |
212 | tmp_p = ptr->data; | |
213 | ||
214 | if(ServerConfIllegal(tmp_p) || !ServerConfAutoconn(tmp_p)) | |
215 | continue; | |
216 | ||
217 | /* don't allow ssl connections if ssl isn't setup */ | |
218 | if(ServerConfSSL(tmp_p) && (!ssl_ok || !get_ssld_count())) | |
219 | continue; | |
220 | ||
221 | cltmp = tmp_p->class; | |
222 | ||
223 | /* | |
224 | * Skip this entry if the use of it is still on hold until | |
225 | * future. Otherwise handle this entry (and set it on hold | |
226 | * until next time). Will reset only hold times, if already | |
227 | * made one successfull connection... [this algorithm is | |
228 | * a bit fuzzy... -- msa >;) ] | |
229 | */ | |
230 | if(tmp_p->hold > rb_current_time()) | |
231 | { | |
232 | if(next > tmp_p->hold || next == 0) | |
233 | next = tmp_p->hold; | |
234 | continue; | |
235 | } | |
236 | ||
237 | confrq = get_con_freq(cltmp); | |
238 | tmp_p->hold = rb_current_time() + confrq; | |
239 | ||
240 | /* | |
241 | * Found a CONNECT config with port specified, scan clients | |
242 | * and see if this server is already connected? | |
243 | */ | |
244 | client_p = find_server(NULL, tmp_p->name); | |
245 | ||
246 | if(!client_p && (CurrUsers(cltmp) < MaxUsers(cltmp)) && !connecting) | |
247 | { | |
248 | server_p = tmp_p; | |
249 | ||
250 | /* We connect only one at time... */ | |
251 | connecting = TRUE; | |
252 | } | |
253 | ||
254 | if((next > tmp_p->hold) || (next == 0)) | |
255 | next = tmp_p->hold; | |
256 | } | |
257 | ||
258 | /* TODO: change this to set active flag to 0 when added to event! --Habeeb */ | |
259 | if(GlobalSetOptions.autoconn == 0) | |
260 | return; | |
261 | ||
262 | if(!connecting) | |
263 | return; | |
264 | ||
265 | /* move this connect entry to end.. */ | |
266 | rb_dlinkDelete(&server_p->node, &server_conf_list); | |
267 | rb_dlinkAddTail(server_p, &server_p->node, &server_conf_list); | |
268 | ||
269 | /* | |
270 | * We used to only print this if serv_connect() actually | |
271 | * suceeded, but since rb_tcp_connect() can call the callback | |
272 | * immediately if there is an error, we were getting error messages | |
273 | * in the wrong order. SO, we just print out the activated line, | |
274 | * and let serv_connect() / serv_connect_callback() print an | |
275 | * error afterwards if it fails. | |
276 | * -- adrian | |
277 | */ | |
278 | sendto_realops_snomask(SNO_GENERAL, L_ALL, | |
279 | "Connection to %s activated", | |
280 | server_p->name); | |
281 | ||
282 | serv_connect(server_p, 0); | |
283 | } | |
284 | ||
285 | int | |
286 | check_server(const char *name, struct Client *client_p) | |
287 | { | |
288 | struct server_conf *server_p = NULL; | |
289 | struct server_conf *tmp_p; | |
290 | rb_dlink_node *ptr; | |
291 | int error = -1; | |
292 | ||
293 | s_assert(NULL != client_p); | |
294 | if(client_p == NULL) | |
295 | return error; | |
296 | ||
297 | if(!(client_p->localClient->passwd)) | |
298 | return -2; | |
299 | ||
300 | if(strlen(name) > HOSTLEN) | |
301 | return -4; | |
302 | ||
303 | RB_DLINK_FOREACH(ptr, server_conf_list.head) | |
304 | { | |
305 | tmp_p = ptr->data; | |
306 | ||
307 | if(ServerConfIllegal(tmp_p)) | |
308 | continue; | |
309 | ||
310 | if(!match(tmp_p->name, name)) | |
311 | continue; | |
312 | ||
313 | error = -3; | |
314 | ||
315 | /* XXX: Fix me for IPv6 */ | |
316 | /* XXX sockhost is the IPv4 ip as a string */ | |
317 | if(match(tmp_p->host, client_p->host) || | |
318 | match(tmp_p->host, client_p->sockhost)) | |
319 | { | |
320 | error = -2; | |
321 | ||
322 | if(ServerConfEncrypted(tmp_p)) | |
323 | { | |
324 | if(!strcmp(tmp_p->passwd, rb_crypt(client_p->localClient->passwd, | |
325 | tmp_p->passwd))) | |
326 | { | |
327 | server_p = tmp_p; | |
328 | break; | |
329 | } | |
330 | } | |
331 | else if(!strcmp(tmp_p->passwd, client_p->localClient->passwd)) | |
332 | { | |
333 | server_p = tmp_p; | |
334 | break; | |
335 | } | |
336 | } | |
337 | } | |
338 | ||
339 | if(server_p == NULL) | |
340 | return error; | |
341 | ||
342 | if(ServerConfSSL(server_p) && client_p->localClient->ssl_ctl == NULL) | |
343 | { | |
344 | return -5; | |
345 | } | |
346 | ||
347 | attach_server_conf(client_p, server_p); | |
348 | ||
349 | /* clear ZIP/TB if they support but we dont want them */ | |
350 | #ifdef HAVE_LIBZ | |
351 | if(!ServerConfCompressed(server_p)) | |
352 | #endif | |
353 | ClearCap(client_p, CAP_ZIP); | |
354 | ||
355 | if(!ServerConfTb(server_p)) | |
356 | ClearCap(client_p, CAP_TB); | |
357 | ||
358 | return 0; | |
359 | } | |
360 | ||
361 | /* | |
362 | * send_capabilities | |
363 | * | |
364 | * inputs - Client pointer to send to | |
365 | * - int flag of capabilities that this server has | |
366 | * output - NONE | |
367 | * side effects - send the CAPAB line to a server -orabidoo | |
368 | * | |
369 | */ | |
370 | void | |
371 | send_capabilities(struct Client *client_p, int cap_can_send) | |
372 | { | |
373 | struct Capability *cap; | |
374 | char msgbuf[BUFSIZE]; | |
375 | char *t; | |
376 | int tl; | |
377 | ||
378 | t = msgbuf; | |
379 | ||
380 | for (cap = captab; cap->name; ++cap) | |
381 | { | |
382 | if(cap->cap & cap_can_send) | |
383 | { | |
384 | tl = rb_sprintf(t, "%s ", cap->name); | |
385 | t += tl; | |
386 | } | |
387 | } | |
388 | ||
389 | t--; | |
390 | *t = '\0'; | |
391 | ||
392 | sendto_one(client_p, "CAPAB :%s", msgbuf); | |
393 | } | |
394 | ||
395 | static void | |
396 | burst_ban(struct Client *client_p) | |
397 | { | |
398 | rb_dlink_node *ptr; | |
399 | struct ConfItem *aconf; | |
400 | const char *type, *oper; | |
401 | /* +5 for !,@,{,} and null */ | |
402 | char operbuf[NICKLEN + USERLEN + HOSTLEN + HOSTLEN + 5]; | |
403 | char *p; | |
404 | size_t melen; | |
405 | ||
406 | melen = strlen(me.name); | |
407 | RB_DLINK_FOREACH(ptr, prop_bans.head) | |
408 | { | |
409 | aconf = ptr->data; | |
410 | ||
411 | /* Skip expired stuff. */ | |
412 | if(aconf->lifetime < rb_current_time()) | |
413 | continue; | |
414 | switch(aconf->status & ~CONF_ILLEGAL) | |
415 | { | |
416 | case CONF_KILL: type = "K"; break; | |
417 | case CONF_DLINE: type = "D"; break; | |
418 | case CONF_XLINE: type = "X"; break; | |
419 | case CONF_RESV_NICK: type = "R"; break; | |
420 | case CONF_RESV_CHANNEL: type = "R"; break; | |
421 | default: | |
422 | continue; | |
423 | } | |
424 | oper = aconf->info.oper; | |
425 | if(aconf->flags & CONF_FLAGS_MYOPER) | |
426 | { | |
427 | /* Our operator{} names may not be meaningful | |
428 | * to other servers, so rewrite to our server | |
429 | * name. | |
430 | */ | |
431 | rb_strlcpy(operbuf, aconf->info.oper, sizeof buf); | |
432 | p = strrchr(operbuf, '{'); | |
433 | if (p != NULL && | |
434 | operbuf + sizeof operbuf - p > (ptrdiff_t)(melen + 2)) | |
435 | { | |
436 | memcpy(p + 1, me.name, melen); | |
437 | p[melen + 1] = '}'; | |
438 | p[melen + 2] = '\0'; | |
439 | oper = operbuf; | |
440 | } | |
441 | } | |
442 | sendto_one(client_p, ":%s BAN %s %s %s %lu %d %d %s :%s%s%s", | |
443 | me.id, | |
444 | type, | |
445 | aconf->user ? aconf->user : "*", aconf->host, | |
446 | (unsigned long)aconf->created, | |
447 | (int)(aconf->hold - aconf->created), | |
448 | (int)(aconf->lifetime - aconf->created), | |
449 | oper, | |
450 | aconf->passwd, | |
451 | aconf->spasswd ? "|" : "", | |
452 | aconf->spasswd ? aconf->spasswd : ""); | |
453 | } | |
454 | } | |
455 | ||
456 | /* burst_modes_TS6() | |
457 | * | |
458 | * input - client to burst to, channel name, list to burst, mode flag | |
459 | * output - | |
460 | * side effects - client is sent a list of +b, +e, or +I modes | |
461 | */ | |
462 | static void | |
463 | burst_modes_TS6(struct Client *client_p, struct Channel *chptr, | |
464 | rb_dlink_list *list, char flag) | |
465 | { | |
466 | rb_dlink_node *ptr; | |
467 | struct Ban *banptr; | |
468 | char *t; | |
469 | int tlen; | |
470 | int mlen; | |
471 | int cur_len; | |
472 | ||
473 | cur_len = mlen = rb_sprintf(buf, ":%s BMASK %ld %s %c :", | |
474 | me.id, (long) chptr->channelts, chptr->chname, flag); | |
475 | t = buf + mlen; | |
476 | ||
477 | RB_DLINK_FOREACH(ptr, list->head) | |
478 | { | |
479 | banptr = ptr->data; | |
480 | ||
481 | tlen = strlen(banptr->banstr) + 1; | |
482 | ||
483 | /* uh oh */ | |
484 | if(cur_len + tlen > BUFSIZE - 3) | |
485 | { | |
486 | /* the one we're trying to send doesnt fit at all! */ | |
487 | if(cur_len == mlen) | |
488 | { | |
489 | s_assert(0); | |
490 | continue; | |
491 | } | |
492 | ||
493 | /* chop off trailing space and send.. */ | |
494 | *(t-1) = '\0'; | |
495 | sendto_one(client_p, "%s", buf); | |
496 | cur_len = mlen; | |
497 | t = buf + mlen; | |
498 | } | |
499 | ||
500 | rb_sprintf(t, "%s ", banptr->banstr); | |
501 | t += tlen; | |
502 | cur_len += tlen; | |
503 | } | |
504 | ||
505 | /* cant ever exit the loop above without having modified buf, | |
506 | * chop off trailing space and send. | |
507 | */ | |
508 | *(t-1) = '\0'; | |
509 | sendto_one(client_p, "%s", buf); | |
510 | } | |
511 | ||
512 | /* | |
513 | * burst_TS6 | |
514 | * | |
515 | * inputs - client (server) to send nick towards | |
516 | * - client to send nick for | |
517 | * output - NONE | |
518 | * side effects - NICK message is sent towards given client_p | |
519 | */ | |
520 | static void | |
521 | burst_TS6(struct Client *client_p) | |
522 | { | |
523 | static char ubuf[12]; | |
524 | struct Client *target_p; | |
525 | struct Channel *chptr; | |
526 | struct membership *msptr; | |
527 | hook_data_client hclientinfo; | |
528 | hook_data_channel hchaninfo; | |
529 | rb_dlink_node *ptr; | |
530 | rb_dlink_node *uptr; | |
531 | char *t; | |
532 | int tlen, mlen; | |
533 | int cur_len = 0; | |
534 | ||
535 | hclientinfo.client = hchaninfo.client = client_p; | |
536 | ||
537 | RB_DLINK_FOREACH(ptr, global_client_list.head) | |
538 | { | |
539 | target_p = ptr->data; | |
540 | ||
541 | if(!IsPerson(target_p)) | |
542 | continue; | |
543 | ||
544 | send_umode(NULL, target_p, 0, 0, ubuf); | |
545 | if(!*ubuf) | |
546 | { | |
547 | ubuf[0] = '+'; | |
548 | ubuf[1] = '\0'; | |
549 | } | |
550 | ||
551 | if(IsCapable(client_p, CAP_EUID)) | |
552 | sendto_one(client_p, ":%s EUID %s %d %ld %s %s %s %s %s %s %s :%s", | |
553 | target_p->servptr->id, target_p->name, | |
554 | target_p->hopcount + 1, | |
555 | (long) target_p->tsinfo, ubuf, | |
556 | target_p->username, target_p->host, | |
557 | IsIPSpoof(target_p) ? "0" : target_p->sockhost, | |
558 | target_p->id, | |
559 | IsDynSpoof(target_p) ? target_p->orighost : "*", | |
560 | EmptyString(target_p->user->suser) ? "*" : target_p->user->suser, | |
561 | target_p->info); | |
562 | else | |
563 | sendto_one(client_p, ":%s UID %s %d %ld %s %s %s %s %s :%s", | |
564 | target_p->servptr->id, target_p->name, | |
565 | target_p->hopcount + 1, | |
566 | (long) target_p->tsinfo, ubuf, | |
567 | target_p->username, target_p->host, | |
568 | IsIPSpoof(target_p) ? "0" : target_p->sockhost, | |
569 | target_p->id, target_p->info); | |
570 | ||
571 | if(!EmptyString(target_p->certfp)) | |
572 | sendto_one(client_p, ":%s ENCAP * CERTFP :%s", | |
573 | use_id(target_p), target_p->certfp); | |
574 | ||
575 | if(!IsCapable(client_p, CAP_EUID)) | |
576 | { | |
577 | if(IsDynSpoof(target_p)) | |
578 | sendto_one(client_p, ":%s ENCAP * REALHOST %s", | |
579 | use_id(target_p), target_p->orighost); | |
580 | if(!EmptyString(target_p->user->suser)) | |
581 | sendto_one(client_p, ":%s ENCAP * LOGIN %s", | |
582 | use_id(target_p), target_p->user->suser); | |
583 | } | |
584 | ||
585 | if(ConfigFileEntry.burst_away && !EmptyString(target_p->user->away)) | |
586 | sendto_one(client_p, ":%s AWAY :%s", | |
587 | use_id(target_p), | |
588 | target_p->user->away); | |
589 | ||
590 | hclientinfo.target = target_p; | |
591 | call_hook(h_burst_client, &hclientinfo); | |
592 | } | |
593 | ||
594 | RB_DLINK_FOREACH(ptr, global_channel_list.head) | |
595 | { | |
596 | chptr = ptr->data; | |
597 | ||
598 | if(*chptr->chname != '#') | |
599 | continue; | |
600 | ||
601 | cur_len = mlen = rb_sprintf(buf, ":%s SJOIN %ld %s %s :", me.id, | |
602 | (long) chptr->channelts, chptr->chname, | |
603 | channel_modes(chptr, client_p)); | |
604 | ||
605 | t = buf + mlen; | |
606 | ||
607 | RB_DLINK_FOREACH(uptr, chptr->members.head) | |
608 | { | |
609 | msptr = uptr->data; | |
610 | ||
611 | tlen = strlen(use_id(msptr->client_p)) + 1; | |
612 | if(is_chanop(msptr)) | |
613 | tlen++; | |
614 | if(is_voiced(msptr)) | |
615 | tlen++; | |
616 | ||
617 | if(cur_len + tlen >= BUFSIZE - 3) | |
618 | { | |
619 | *(t-1) = '\0'; | |
620 | sendto_one(client_p, "%s", buf); | |
621 | cur_len = mlen; | |
622 | t = buf + mlen; | |
623 | } | |
624 | ||
625 | rb_sprintf(t, "%s%s ", find_channel_status(msptr, 1), | |
626 | use_id(msptr->client_p)); | |
627 | ||
628 | cur_len += tlen; | |
629 | t += tlen; | |
630 | } | |
631 | ||
632 | if (rb_dlink_list_length(&chptr->members) > 0) | |
633 | { | |
634 | /* remove trailing space */ | |
635 | *(t-1) = '\0'; | |
636 | } | |
637 | sendto_one(client_p, "%s", buf); | |
638 | ||
639 | if(rb_dlink_list_length(&chptr->banlist) > 0) | |
640 | burst_modes_TS6(client_p, chptr, &chptr->banlist, 'b'); | |
641 | ||
642 | if(IsCapable(client_p, CAP_EX) && | |
643 | rb_dlink_list_length(&chptr->exceptlist) > 0) | |
644 | burst_modes_TS6(client_p, chptr, &chptr->exceptlist, 'e'); | |
645 | ||
646 | if(IsCapable(client_p, CAP_IE) && | |
647 | rb_dlink_list_length(&chptr->invexlist) > 0) | |
648 | burst_modes_TS6(client_p, chptr, &chptr->invexlist, 'I'); | |
649 | ||
650 | if(rb_dlink_list_length(&chptr->quietlist) > 0) | |
651 | burst_modes_TS6(client_p, chptr, &chptr->quietlist, 'q'); | |
652 | ||
653 | if(IsCapable(client_p, CAP_TB) && chptr->topic != NULL) | |
654 | sendto_one(client_p, ":%s TB %s %ld %s%s:%s", | |
655 | me.id, chptr->chname, (long) chptr->topic_time, | |
656 | ConfigChannel.burst_topicwho ? chptr->topic_info : "", | |
657 | ConfigChannel.burst_topicwho ? " " : "", | |
658 | chptr->topic); | |
659 | ||
660 | hchaninfo.chptr = chptr; | |
661 | call_hook(h_burst_channel, &hchaninfo); | |
662 | } | |
663 | ||
664 | hclientinfo.target = NULL; | |
665 | call_hook(h_burst_finished, &hclientinfo); | |
666 | } | |
667 | ||
668 | /* | |
669 | * show_capabilities - show current server capabilities | |
670 | * | |
671 | * inputs - pointer to an struct Client | |
672 | * output - pointer to static string | |
673 | * side effects - build up string representing capabilities of server listed | |
674 | */ | |
675 | const char * | |
676 | show_capabilities(struct Client *target_p) | |
677 | { | |
678 | static char msgbuf[BUFSIZE]; | |
679 | struct Capability *cap; | |
680 | ||
681 | if(has_id(target_p)) | |
682 | rb_strlcpy(msgbuf, " TS6", sizeof(msgbuf)); | |
683 | ||
684 | if(IsSSL(target_p)) | |
685 | rb_strlcat(msgbuf, " SSL", sizeof(msgbuf)); | |
686 | ||
687 | if(!IsServer(target_p) || !target_p->serv->caps) /* short circuit if no caps */ | |
688 | return msgbuf + 1; | |
689 | ||
690 | for (cap = captab; cap->cap; ++cap) | |
691 | { | |
692 | if(cap->cap & target_p->serv->caps) | |
693 | rb_snprintf_append(msgbuf, sizeof(msgbuf), " %s", cap->name); | |
694 | } | |
695 | ||
696 | return msgbuf + 1; | |
697 | } | |
698 | ||
699 | /* | |
700 | * server_estab | |
701 | * | |
702 | * inputs - pointer to a struct Client | |
703 | * output - | |
704 | * side effects - | |
705 | */ | |
706 | int | |
707 | server_estab(struct Client *client_p) | |
708 | { | |
709 | struct Client *target_p; | |
710 | struct server_conf *server_p; | |
711 | hook_data_client hdata; | |
712 | char *host; | |
713 | rb_dlink_node *ptr; | |
714 | char note[HOSTLEN + 15]; | |
715 | ||
716 | s_assert(NULL != client_p); | |
717 | if(client_p == NULL) | |
718 | return -1; | |
719 | ||
720 | host = client_p->name; | |
721 | ||
722 | if((server_p = client_p->localClient->att_sconf) == NULL) | |
723 | { | |
724 | /* This shouldn't happen, better tell the ops... -A1kmm */ | |
725 | sendto_realops_snomask(SNO_GENERAL, is_remote_connect(client_p) ? L_NETWIDE : L_ALL, | |
726 | "Warning: Lost connect{} block for server %s!", host); | |
727 | return exit_client(client_p, client_p, client_p, "Lost connect{} block!"); | |
728 | } | |
729 | ||
730 | /* We shouldn't have to check this, it should already done before | |
731 | * server_estab is called. -A1kmm | |
732 | */ | |
733 | if(client_p->localClient->passwd) | |
734 | { | |
735 | memset(client_p->localClient->passwd, 0, strlen(client_p->localClient->passwd)); | |
736 | rb_free(client_p->localClient->passwd); | |
737 | client_p->localClient->passwd = NULL; | |
738 | } | |
739 | ||
740 | /* Its got identd , since its a server */ | |
741 | SetGotId(client_p); | |
742 | ||
743 | /* If there is something in the serv_list, it might be this | |
744 | * connecting server.. | |
745 | */ | |
746 | if(!ServerInfo.hub && serv_list.head) | |
747 | { | |
748 | if(client_p != serv_list.head->data || serv_list.head->next) | |
749 | { | |
750 | ServerStats.is_ref++; | |
751 | sendto_one(client_p, "ERROR :I'm a leaf not a hub"); | |
752 | return exit_client(client_p, client_p, client_p, "I'm a leaf"); | |
753 | } | |
754 | } | |
755 | ||
756 | if(IsUnknown(client_p)) | |
757 | { | |
758 | /* | |
759 | * jdc -- 1. Use EmptyString(), not [0] index reference. | |
760 | * 2. Check ->spasswd, not ->passwd. | |
761 | */ | |
762 | if(!EmptyString(server_p->spasswd)) | |
763 | { | |
764 | sendto_one(client_p, "PASS %s TS %d :%s", | |
765 | server_p->spasswd, TS_CURRENT, me.id); | |
766 | } | |
767 | ||
768 | /* pass info to new server */ | |
769 | send_capabilities(client_p, default_server_capabs | |
770 | | (ServerConfCompressed(server_p) ? CAP_ZIP_SUPPORTED : 0) | |
771 | | (ServerConfTb(server_p) ? CAP_TB : 0)); | |
772 | ||
773 | sendto_one(client_p, "SERVER %s 1 :%s%s", | |
774 | me.name, | |
775 | ConfigServerHide.hidden ? "(H) " : "", | |
776 | (me.info[0]) ? (me.info) : "IRCers United"); | |
777 | } | |
778 | ||
779 | if(!rb_set_buffers(client_p->localClient->F, READBUF_SIZE)) | |
780 | ilog_error("rb_set_buffers failed for server"); | |
781 | ||
782 | /* Enable compression now */ | |
783 | if(IsCapable(client_p, CAP_ZIP)) | |
784 | { | |
785 | start_zlib_session(client_p); | |
786 | } | |
787 | sendto_one(client_p, "SVINFO %d %d 0 :%ld", TS_CURRENT, TS_MIN, (long int)rb_current_time()); | |
788 | ||
789 | client_p->servptr = &me; | |
790 | ||
791 | if(IsAnyDead(client_p)) | |
792 | return CLIENT_EXITED; | |
793 | ||
794 | SetServer(client_p); | |
795 | ||
796 | /* Update the capability combination usage counts */ | |
797 | set_chcap_usage_counts(client_p); | |
798 | ||
799 | rb_dlinkAdd(client_p, &client_p->lnode, &me.serv->servers); | |
800 | rb_dlinkMoveNode(&client_p->localClient->tnode, &unknown_list, &serv_list); | |
801 | rb_dlinkAddTailAlloc(client_p, &global_serv_list); | |
802 | ||
803 | if(has_id(client_p)) | |
804 | add_to_id_hash(client_p->id, client_p); | |
805 | ||
806 | add_to_client_hash(client_p->name, client_p); | |
807 | /* doesnt duplicate client_p->serv if allocated this struct already */ | |
808 | make_server(client_p); | |
809 | ||
810 | client_p->serv->caps = client_p->localClient->caps; | |
811 | ||
812 | if(client_p->localClient->fullcaps) | |
813 | { | |
814 | client_p->serv->fullcaps = rb_strdup(client_p->localClient->fullcaps); | |
815 | rb_free(client_p->localClient->fullcaps); | |
816 | client_p->localClient->fullcaps = NULL; | |
817 | } | |
818 | ||
819 | client_p->serv->nameinfo = scache_connect(client_p->name, client_p->info, IsHidden(client_p)); | |
820 | client_p->localClient->firsttime = rb_current_time(); | |
821 | /* fixing eob timings.. -gnp */ | |
822 | ||
823 | if((rb_dlink_list_length(&lclient_list) + rb_dlink_list_length(&serv_list)) > | |
824 | (unsigned long)MaxConnectionCount) | |
825 | MaxConnectionCount = rb_dlink_list_length(&lclient_list) + | |
826 | rb_dlink_list_length(&serv_list); | |
827 | ||
828 | /* Show the real host/IP to admins */ | |
829 | sendto_realops_snomask(SNO_GENERAL, L_ALL, | |
830 | "Link with %s established: (%s) link", | |
831 | client_p->name, | |
832 | show_capabilities(client_p)); | |
833 | ||
834 | ilog(L_SERVER, "Link with %s established: (%s) link", | |
835 | log_client_name(client_p, SHOW_IP), show_capabilities(client_p)); | |
836 | ||
837 | hdata.client = &me; | |
838 | hdata.target = client_p; | |
839 | call_hook(h_server_introduced, &hdata); | |
840 | ||
841 | rb_snprintf(note, sizeof(note), "Server: %s", client_p->name); | |
842 | rb_note(client_p->localClient->F, note); | |
843 | ||
844 | /* | |
845 | ** Old sendto_serv_but_one() call removed because we now | |
846 | ** need to send different names to different servers | |
847 | ** (domain name matching) Send new server to other servers. | |
848 | */ | |
849 | RB_DLINK_FOREACH(ptr, serv_list.head) | |
850 | { | |
851 | target_p = ptr->data; | |
852 | ||
853 | if(target_p == client_p) | |
854 | continue; | |
855 | ||
856 | if(has_id(target_p) && has_id(client_p)) | |
857 | { | |
858 | sendto_one(target_p, ":%s SID %s 2 %s :%s%s", | |
859 | me.id, client_p->name, client_p->id, | |
860 | IsHidden(client_p) ? "(H) " : "", client_p->info); | |
861 | ||
862 | if(IsCapable(target_p, CAP_ENCAP) && | |
863 | !EmptyString(client_p->serv->fullcaps)) | |
864 | sendto_one(target_p, ":%s ENCAP * GCAP :%s", | |
865 | client_p->id, client_p->serv->fullcaps); | |
866 | } | |
867 | else | |
868 | { | |
869 | sendto_one(target_p, ":%s SERVER %s 2 :%s%s", | |
870 | me.name, client_p->name, | |
871 | IsHidden(client_p) ? "(H) " : "", client_p->info); | |
872 | ||
873 | if(IsCapable(target_p, CAP_ENCAP) && | |
874 | !EmptyString(client_p->serv->fullcaps)) | |
875 | sendto_one(target_p, ":%s ENCAP * GCAP :%s", | |
876 | client_p->name, client_p->serv->fullcaps); | |
877 | } | |
878 | } | |
879 | ||
880 | /* | |
881 | ** Pass on my client information to the new server | |
882 | ** | |
883 | ** First, pass only servers (idea is that if the link gets | |
884 | ** cancelled beacause the server was already there, | |
885 | ** there are no NICK's to be cancelled...). Of course, | |
886 | ** if cancellation occurs, all this info is sent anyway, | |
887 | ** and I guess the link dies when a read is attempted...? --msa | |
888 | ** | |
889 | ** Note: Link cancellation to occur at this point means | |
890 | ** that at least two servers from my fragment are building | |
891 | ** up connection this other fragment at the same time, it's | |
892 | ** a race condition, not the normal way of operation... | |
893 | ** | |
894 | ** ALSO NOTE: using the get_client_name for server names-- | |
895 | ** see previous *WARNING*!!! (Also, original inpath | |
896 | ** is destroyed...) | |
897 | */ | |
898 | RB_DLINK_FOREACH(ptr, global_serv_list.head) | |
899 | { | |
900 | target_p = ptr->data; | |
901 | ||
902 | /* target_p->from == target_p for target_p == client_p */ | |
903 | if(IsMe(target_p) || target_p->from == client_p) | |
904 | continue; | |
905 | ||
906 | /* presumption, if target has an id, so does its uplink */ | |
907 | if(has_id(client_p) && has_id(target_p)) | |
908 | sendto_one(client_p, ":%s SID %s %d %s :%s%s", | |
909 | target_p->servptr->id, target_p->name, | |
910 | target_p->hopcount + 1, target_p->id, | |
911 | IsHidden(target_p) ? "(H) " : "", target_p->info); | |
912 | else | |
913 | sendto_one(client_p, ":%s SERVER %s %d :%s%s", | |
914 | target_p->servptr->name, | |
915 | target_p->name, target_p->hopcount + 1, | |
916 | IsHidden(target_p) ? "(H) " : "", target_p->info); | |
917 | ||
918 | if(IsCapable(client_p, CAP_ENCAP) && | |
919 | !EmptyString(target_p->serv->fullcaps)) | |
920 | sendto_one(client_p, ":%s ENCAP * GCAP :%s", | |
921 | get_id(target_p, client_p), | |
922 | target_p->serv->fullcaps); | |
923 | } | |
924 | ||
925 | if(IsCapable(client_p, CAP_BAN)) | |
926 | burst_ban(client_p); | |
927 | ||
928 | burst_TS6(client_p); | |
929 | ||
930 | /* Always send a PING after connect burst is done */ | |
931 | sendto_one(client_p, "PING :%s", get_id(&me, client_p)); | |
932 | ||
933 | free_pre_client(client_p); | |
934 | ||
935 | send_pop_queue(client_p); | |
936 | ||
937 | return 0; | |
938 | } | |
939 | ||
940 | /* | |
941 | * New server connection code | |
942 | * Based upon the stuff floating about in s_bsd.c | |
943 | * -- adrian | |
944 | */ | |
945 | ||
946 | static int | |
947 | serv_connect_resolved(struct Client *client_p) | |
948 | { | |
949 | struct rb_sockaddr_storage myipnum; | |
950 | char vhoststr[HOSTIPLEN]; | |
951 | struct server_conf *server_p; | |
952 | uint16_t port; | |
953 | ||
954 | if((server_p = client_p->localClient->att_sconf) == NULL) | |
955 | { | |
956 | sendto_realops_snomask(SNO_GENERAL, is_remote_connect(client_p) ? L_NETWIDE : L_ALL, "Lost connect{} block for %s", | |
957 | client_p->name); | |
958 | exit_client(client_p, client_p, &me, "Lost connect{} block"); | |
959 | return 0; | |
960 | } | |
961 | ||
962 | #ifdef RB_IPV6 | |
963 | if(client_p->localClient->ip.ss_family == AF_INET6) | |
964 | port = ntohs(((struct sockaddr_in6 *)&client_p->localClient->ip)->sin6_port); | |
965 | else | |
966 | #endif | |
967 | port = ntohs(((struct sockaddr_in *)&client_p->localClient->ip)->sin_port); | |
968 | ||
969 | if(ServerConfVhosted(server_p)) | |
970 | { | |
971 | memcpy(&myipnum, &server_p->my_ipnum, sizeof(myipnum)); | |
972 | ((struct sockaddr_in *)&myipnum)->sin_port = 0; | |
973 | myipnum.ss_family = server_p->aftype; | |
974 | ||
975 | } | |
976 | else if(server_p->aftype == AF_INET && ServerInfo.specific_ipv4_vhost) | |
977 | { | |
978 | memcpy(&myipnum, &ServerInfo.ip, sizeof(myipnum)); | |
979 | ((struct sockaddr_in *)&myipnum)->sin_port = 0; | |
980 | myipnum.ss_family = AF_INET; | |
981 | SET_SS_LEN(&myipnum, sizeof(struct sockaddr_in)); | |
982 | } | |
983 | ||
984 | #ifdef RB_IPV6 | |
985 | else if((server_p->aftype == AF_INET6) && ServerInfo.specific_ipv6_vhost) | |
986 | { | |
987 | memcpy(&myipnum, &ServerInfo.ip6, sizeof(myipnum)); | |
988 | ((struct sockaddr_in6 *)&myipnum)->sin6_port = 0; | |
989 | myipnum.ss_family = AF_INET6; | |
990 | SET_SS_LEN(&myipnum, sizeof(struct sockaddr_in6)); | |
991 | } | |
992 | #endif | |
993 | else | |
994 | { | |
995 | /* log */ | |
996 | ilog(L_SERVER, "Connecting to %s[%s] port %d (%s)", client_p->name, client_p->sockhost, port, | |
997 | #ifdef RB_IPV6 | |
998 | server_p->aftype == AF_INET6 ? "IPv6" : | |
999 | #endif | |
1000 | (server_p->aftype == AF_INET ? "IPv4" : "?")); | |
1001 | ||
1002 | if(ServerConfSSL(server_p)) | |
1003 | { | |
1004 | rb_connect_tcp(client_p->localClient->F, (struct sockaddr *)&client_p->localClient->ip, | |
1005 | NULL, 0, serv_connect_ssl_callback, | |
1006 | client_p, ConfigFileEntry.connect_timeout); | |
1007 | } | |
1008 | else | |
1009 | rb_connect_tcp(client_p->localClient->F, (struct sockaddr *)&client_p->localClient->ip, | |
1010 | NULL, 0, serv_connect_callback, | |
1011 | client_p, ConfigFileEntry.connect_timeout); | |
1012 | return 1; | |
1013 | } | |
1014 | ||
1015 | /* log */ | |
1016 | rb_inet_ntop_sock((struct sockaddr *)&myipnum, vhoststr, sizeof vhoststr); | |
1017 | ilog(L_SERVER, "Connecting to %s[%s] port %d (%s) (vhost %s)", client_p->name, client_p->sockhost, port, | |
1018 | #ifdef RB_IPV6 | |
1019 | server_p->aftype == AF_INET6 ? "IPv6" : | |
1020 | #endif | |
1021 | (server_p->aftype == AF_INET ? "IPv4" : "?"), vhoststr); | |
1022 | ||
1023 | ||
1024 | if(ServerConfSSL(server_p)) | |
1025 | rb_connect_tcp(client_p->localClient->F, (struct sockaddr *)&client_p->localClient->ip, | |
1026 | (struct sockaddr *) &myipnum, | |
1027 | GET_SS_LEN(&myipnum), serv_connect_ssl_callback, client_p, | |
1028 | ConfigFileEntry.connect_timeout); | |
1029 | else | |
1030 | rb_connect_tcp(client_p->localClient->F, (struct sockaddr *)&client_p->localClient->ip, | |
1031 | (struct sockaddr *) &myipnum, | |
1032 | GET_SS_LEN(&myipnum), serv_connect_callback, client_p, | |
1033 | ConfigFileEntry.connect_timeout); | |
1034 | ||
1035 | return 1; | |
1036 | } | |
1037 | ||
1038 | static void | |
1039 | serv_connect_dns_callback(void *vptr, struct DNSReply *reply) | |
1040 | { | |
1041 | struct Client *client_p = vptr; | |
1042 | uint16_t port; | |
1043 | ||
1044 | rb_free(client_p->localClient->dnsquery); | |
1045 | client_p->localClient->dnsquery = NULL; | |
1046 | ||
1047 | if (reply == NULL) | |
1048 | { | |
1049 | sendto_realops_snomask(SNO_GENERAL, is_remote_connect(client_p) ? L_NETWIDE : L_ALL, "Cannot resolve hostname for %s", | |
1050 | client_p->name); | |
1051 | ilog(L_SERVER, "Cannot resolve hostname for %s", | |
1052 | log_client_name(client_p, HIDE_IP)); | |
1053 | exit_client(client_p, client_p, &me, "Cannot resolve hostname"); | |
1054 | return; | |
1055 | } | |
1056 | #ifdef RB_IPV6 | |
1057 | if(reply->addr.ss_family == AF_INET6) | |
1058 | port = ((struct sockaddr_in6 *)&client_p->localClient->ip)->sin6_port; | |
1059 | else | |
1060 | #endif | |
1061 | port = ((struct sockaddr_in *)&client_p->localClient->ip)->sin_port; | |
1062 | memcpy(&client_p->localClient->ip, &reply->addr, sizeof(client_p->localClient->ip)); | |
1063 | #ifdef RB_IPV6 | |
1064 | if(reply->addr.ss_family == AF_INET6) | |
1065 | ((struct sockaddr_in6 *)&client_p->localClient->ip)->sin6_port = port; | |
1066 | else | |
1067 | #endif | |
1068 | ((struct sockaddr_in *)&client_p->localClient->ip)->sin_port = port; | |
1069 | /* Set sockhost properly now -- jilles */ | |
1070 | rb_inet_ntop_sock((struct sockaddr *)&client_p->localClient->ip, | |
1071 | client_p->sockhost, sizeof client_p->sockhost); | |
1072 | serv_connect_resolved(client_p); | |
1073 | } | |
1074 | ||
1075 | /* | |
1076 | * serv_connect() - initiate a server connection | |
1077 | * | |
1078 | * inputs - pointer to conf | |
1079 | * - pointer to client doing the connet | |
1080 | * output - | |
1081 | * side effects - | |
1082 | * | |
1083 | * This code initiates a connection to a server. It first checks to make | |
1084 | * sure the given server exists. If this is the case, it creates a socket, | |
1085 | * creates a client, saves the socket information in the client, and | |
1086 | * initiates a connection to the server through rb_connect_tcp(). The | |
1087 | * completion of this goes through serv_completed_connection(). | |
1088 | * | |
1089 | * We return 1 if the connection is attempted, since we don't know whether | |
1090 | * it suceeded or not, and 0 if it fails in here somewhere. | |
1091 | */ | |
1092 | int | |
1093 | serv_connect(struct server_conf *server_p, struct Client *by) | |
1094 | { | |
1095 | struct Client *client_p; | |
1096 | struct rb_sockaddr_storage theiripnum; | |
1097 | rb_fde_t *F; | |
1098 | char note[HOSTLEN + 10]; | |
1099 | ||
1100 | s_assert(server_p != NULL); | |
1101 | if(server_p == NULL) | |
1102 | return 0; | |
1103 | ||
1104 | /* | |
1105 | * Make sure this server isn't already connected | |
1106 | */ | |
1107 | if((client_p = find_server(NULL, server_p->name))) | |
1108 | { | |
1109 | sendto_realops_snomask(SNO_GENERAL, L_ALL, | |
1110 | "Server %s already present from %s", | |
1111 | server_p->name, client_p->name); | |
1112 | if(by && IsPerson(by) && !MyClient(by)) | |
1113 | sendto_one_notice(by, ":Server %s already present from %s", | |
1114 | server_p->name, client_p->name); | |
1115 | return 0; | |
1116 | } | |
1117 | ||
1118 | /* create a socket for the server connection */ | |
1119 | if((F = rb_socket(server_p->aftype, SOCK_STREAM, 0, NULL)) == NULL) | |
1120 | { | |
1121 | ilog_error("opening a stream socket"); | |
1122 | return 0; | |
1123 | } | |
1124 | ||
1125 | rb_snprintf(note, sizeof note, "Server: %s", server_p->name); | |
1126 | rb_note(F, note); | |
1127 | ||
1128 | /* Create a local client */ | |
1129 | client_p = make_client(NULL); | |
1130 | ||
1131 | /* Copy in the server, hostname, fd | |
1132 | * The sockhost may be a hostname, this will be corrected later | |
1133 | * -- jilles | |
1134 | */ | |
1135 | rb_strlcpy(client_p->name, server_p->name, sizeof(client_p->name)); | |
1136 | rb_strlcpy(client_p->host, server_p->host, sizeof(client_p->host)); | |
1137 | rb_strlcpy(client_p->sockhost, server_p->host, sizeof(client_p->sockhost)); | |
1138 | client_p->localClient->F = F; | |
1139 | add_to_cli_fd_hash(client_p); | |
1140 | ||
1141 | /* | |
1142 | * Set up the initial server evilness, ripped straight from | |
1143 | * connect_server(), so don't blame me for it being evil. | |
1144 | * -- adrian | |
1145 | */ | |
1146 | ||
1147 | if(!rb_set_buffers(client_p->localClient->F, READBUF_SIZE)) | |
1148 | { | |
1149 | ilog_error("setting the buffer size for a server connection"); | |
1150 | } | |
1151 | ||
1152 | /* | |
1153 | * Attach config entries to client here rather than in | |
1154 | * serv_connect_callback(). This to avoid null pointer references. | |
1155 | */ | |
1156 | attach_server_conf(client_p, server_p); | |
1157 | ||
1158 | /* | |
1159 | * at this point we have a connection in progress and C/N lines | |
1160 | * attached to the client, the socket info should be saved in the | |
1161 | * client and it should either be resolved or have a valid address. | |
1162 | * | |
1163 | * The socket has been connected or connect is in progress. | |
1164 | */ | |
1165 | make_server(client_p); | |
1166 | if(by && IsPerson(by)) | |
1167 | { | |
1168 | strcpy(client_p->serv->by, by->name); | |
1169 | if(client_p->serv->user) | |
1170 | free_user(client_p->serv->user, NULL); | |
1171 | client_p->serv->user = by->user; | |
1172 | by->user->refcnt++; | |
1173 | } | |
1174 | else | |
1175 | { | |
1176 | strcpy(client_p->serv->by, "AutoConn."); | |
1177 | if(client_p->serv->user) | |
1178 | free_user(client_p->serv->user, NULL); | |
1179 | client_p->serv->user = NULL; | |
1180 | } | |
1181 | SetConnecting(client_p); | |
1182 | rb_dlinkAddTail(client_p, &client_p->node, &global_client_list); | |
1183 | ||
1184 | if (rb_inet_pton_sock(server_p->host, (struct sockaddr *)&theiripnum) > 0) | |
1185 | { | |
1186 | memcpy(&client_p->localClient->ip, &theiripnum, sizeof(client_p->localClient->ip)); | |
1187 | #ifdef RB_IPV6 | |
1188 | if(theiripnum.ss_family == AF_INET6) | |
1189 | ((struct sockaddr_in6 *)&client_p->localClient->ip)->sin6_port = htons(server_p->port); | |
1190 | else | |
1191 | #endif | |
1192 | ((struct sockaddr_in *)&client_p->localClient->ip)->sin_port = htons(server_p->port); | |
1193 | ||
1194 | return serv_connect_resolved(client_p); | |
1195 | } | |
1196 | else | |
1197 | { | |
1198 | #ifdef RB_IPV6 | |
1199 | if(theiripnum.ss_family == AF_INET6) | |
1200 | ((struct sockaddr_in6 *)&client_p->localClient->ip)->sin6_port = htons(server_p->port); | |
1201 | else | |
1202 | #endif | |
1203 | ((struct sockaddr_in *)&client_p->localClient->ip)->sin_port = htons(server_p->port); | |
1204 | ||
1205 | client_p->localClient->dnsquery = rb_malloc(sizeof(struct DNSQuery)); | |
1206 | client_p->localClient->dnsquery->ptr = client_p; | |
1207 | client_p->localClient->dnsquery->callback = serv_connect_dns_callback; | |
1208 | gethost_byname_type(server_p->host, client_p->localClient->dnsquery, | |
1209 | #ifdef RB_IPV6 | |
1210 | server_p->aftype == AF_INET6 ? T_AAAA : | |
1211 | #endif | |
1212 | T_A); | |
1213 | return 1; | |
1214 | } | |
1215 | } | |
1216 | ||
1217 | static void | |
1218 | serv_connect_ssl_callback(rb_fde_t *F, int status, void *data) | |
1219 | { | |
1220 | struct Client *client_p = data; | |
1221 | rb_fde_t *xF[2]; | |
1222 | rb_connect_sockaddr(F, (struct sockaddr *)&client_p->localClient->ip, sizeof(client_p->localClient->ip)); | |
1223 | if(status != RB_OK) | |
1224 | { | |
1225 | /* Print error message, just like non-SSL. */ | |
1226 | serv_connect_callback(F, status, data); | |
1227 | return; | |
1228 | } | |
1229 | if(rb_socketpair(AF_UNIX, SOCK_STREAM, 0, &xF[0], &xF[1], "Outgoing ssld connection") == -1) | |
1230 | { | |
1231 | ilog_error("rb_socketpair failed for server"); | |
1232 | serv_connect_callback(F, RB_ERROR, data); | |
1233 | return; | |
1234 | ||
1235 | } | |
1236 | del_from_cli_fd_hash(client_p); | |
1237 | client_p->localClient->F = xF[0]; | |
1238 | add_to_cli_fd_hash(client_p); | |
1239 | ||
1240 | client_p->localClient->ssl_ctl = start_ssld_connect(F, xF[1], rb_get_fd(xF[0])); | |
1241 | SetSSL(client_p); | |
1242 | serv_connect_callback(client_p->localClient->F, RB_OK, client_p); | |
1243 | } | |
1244 | ||
1245 | /* | |
1246 | * serv_connect_callback() - complete a server connection. | |
1247 | * | |
1248 | * This routine is called after the server connection attempt has | |
1249 | * completed. If unsucessful, an error is sent to ops and the client | |
1250 | * is closed. If sucessful, it goes through the initialisation/check | |
1251 | * procedures, the capabilities are sent, and the socket is then | |
1252 | * marked for reading. | |
1253 | */ | |
1254 | static void | |
1255 | serv_connect_callback(rb_fde_t *F, int status, void *data) | |
1256 | { | |
1257 | struct Client *client_p = data; | |
1258 | struct server_conf *server_p; | |
1259 | char *errstr; | |
1260 | ||
1261 | /* First, make sure its a real client! */ | |
1262 | s_assert(client_p != NULL); | |
1263 | s_assert(client_p->localClient->F == F); | |
1264 | ||
1265 | if(client_p == NULL) | |
1266 | return; | |
1267 | ||
1268 | /* while we were waiting for the callback, its possible this already | |
1269 | * linked in.. --fl | |
1270 | */ | |
1271 | if(find_server(NULL, client_p->name) != NULL) | |
1272 | { | |
1273 | exit_client(client_p, client_p, &me, "Server Exists"); | |
1274 | return; | |
1275 | } | |
1276 | ||
1277 | if(client_p->localClient->ssl_ctl == NULL) | |
1278 | rb_connect_sockaddr(F, (struct sockaddr *)&client_p->localClient->ip, sizeof(client_p->localClient->ip)); | |
1279 | ||
1280 | /* Check the status */ | |
1281 | if(status != RB_OK) | |
1282 | { | |
1283 | /* COMM_ERR_TIMEOUT wont have an errno associated with it, | |
1284 | * the others will.. --fl | |
1285 | */ | |
1286 | if(status == RB_ERR_TIMEOUT) | |
1287 | { | |
1288 | sendto_realops_snomask(SNO_GENERAL, is_remote_connect(client_p) ? L_NETWIDE : L_ALL, | |
1289 | "Error connecting to %s[%s]: %s", | |
1290 | client_p->name, | |
1291 | "255.255.255.255", | |
1292 | rb_errstr(status)); | |
1293 | ilog(L_SERVER, "Error connecting to %s[%s]: %s", | |
1294 | client_p->name, client_p->sockhost, | |
1295 | rb_errstr(status)); | |
1296 | } | |
1297 | else | |
1298 | { | |
1299 | errstr = strerror(rb_get_sockerr(F)); | |
1300 | sendto_realops_snomask(SNO_GENERAL, is_remote_connect(client_p) ? L_NETWIDE : L_ALL, | |
1301 | "Error connecting to %s[%s]: %s (%s)", | |
1302 | client_p->name, | |
1303 | "255.255.255.255", | |
1304 | rb_errstr(status), errstr); | |
1305 | ilog(L_SERVER, "Error connecting to %s[%s]: %s (%s)", | |
1306 | client_p->name, client_p->sockhost, | |
1307 | rb_errstr(status), errstr); | |
1308 | } | |
1309 | ||
1310 | exit_client(client_p, client_p, &me, rb_errstr(status)); | |
1311 | return; | |
1312 | } | |
1313 | ||
1314 | /* COMM_OK, so continue the connection procedure */ | |
1315 | /* Get the C/N lines */ | |
1316 | if((server_p = client_p->localClient->att_sconf) == NULL) | |
1317 | { | |
1318 | sendto_realops_snomask(SNO_GENERAL, is_remote_connect(client_p) ? L_NETWIDE : L_ALL, "Lost connect{} block for %s", | |
1319 | client_p->name); | |
1320 | exit_client(client_p, client_p, &me, "Lost connect{} block"); | |
1321 | return; | |
1322 | } | |
1323 | ||
1324 | /* Next, send the initial handshake */ | |
1325 | SetHandshake(client_p); | |
1326 | ||
1327 | if(!EmptyString(server_p->spasswd)) | |
1328 | { | |
1329 | sendto_one(client_p, "PASS %s TS %d :%s", | |
1330 | server_p->spasswd, TS_CURRENT, me.id); | |
1331 | } | |
1332 | ||
1333 | /* pass my info to the new server */ | |
1334 | send_capabilities(client_p, default_server_capabs | |
1335 | | (ServerConfCompressed(server_p) ? CAP_ZIP_SUPPORTED : 0) | |
1336 | | (ServerConfTb(server_p) ? CAP_TB : 0)); | |
1337 | ||
1338 | sendto_one(client_p, "SERVER %s 1 :%s%s", | |
1339 | me.name, | |
1340 | ConfigServerHide.hidden ? "(H) " : "", me.info); | |
1341 | ||
1342 | /* | |
1343 | * If we've been marked dead because a send failed, just exit | |
1344 | * here now and save everyone the trouble of us ever existing. | |
1345 | */ | |
1346 | if(IsAnyDead(client_p)) | |
1347 | { | |
1348 | sendto_realops_snomask(SNO_GENERAL, is_remote_connect(client_p) ? L_NETWIDE : L_ALL, | |
1349 | "%s went dead during handshake", client_p->name); | |
1350 | exit_client(client_p, client_p, &me, "Went dead during handshake"); | |
1351 | return; | |
1352 | } | |
1353 | ||
1354 | /* don't move to serv_list yet -- we haven't sent a burst! */ | |
1355 | ||
1356 | /* If we get here, we're ok, so lets start reading some data */ | |
1357 | read_packet(F, client_p); | |
1358 | } |