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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 | */ | |
25 | ||
26 | #include "stdinc.h" | |
27 | ||
28 | #ifdef HAVE_LIBCRYPTO | |
29 | #include <openssl/rsa.h> | |
30 | #endif | |
31 | ||
32 | #include "s_serv.h" | |
33 | #include "class.h" | |
34 | #include "client.h" | |
35 | #include "common.h" | |
36 | #include "hash.h" | |
37 | #include "match.h" | |
38 | #include "ircd.h" | |
39 | #include "ircd_defs.h" | |
40 | #include "numeric.h" | |
41 | #include "packet.h" | |
42 | #include "res.h" | |
43 | #include "s_conf.h" | |
44 | #include "s_newconf.h" | |
45 | #include "logger.h" | |
46 | #include "s_stats.h" | |
47 | #include "s_user.h" | |
48 | #include "scache.h" | |
49 | #include "send.h" | |
50 | #include "client.h" | |
51 | #include "channel.h" /* chcap_usage_counts stuff... */ | |
52 | #include "hook.h" | |
53 | #include "msg.h" | |
54 | #include "reject.h" | |
55 | #include "sslproc.h" | |
56 | #include "irc_dictionary.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 | { "MLOCK", CAP_MLOCK }, | |
93 | {0, 0} | |
94 | }; | |
95 | ||
96 | static CNCB serv_connect_callback; | |
97 | static CNCB serv_connect_ssl_callback; | |
98 | ||
99 | /* | |
100 | * hunt_server - Do the basic thing in delivering the message (command) | |
101 | * across the relays to the specific server (server) for | |
102 | * actions. | |
103 | * | |
104 | * Note: The command is a format string and *MUST* be | |
105 | * of prefixed style (e.g. ":%s COMMAND %s ..."). | |
106 | * Command can have only max 8 parameters. | |
107 | * | |
108 | * server parv[server] is the parameter identifying the | |
109 | * target server. | |
110 | * | |
111 | * *WARNING* | |
112 | * parv[server] is replaced with the pointer to the | |
113 | * real servername from the matched client (I'm lazy | |
114 | * now --msa). | |
115 | * | |
116 | * returns: (see #defines) | |
117 | */ | |
118 | int | |
119 | hunt_server(struct Client *client_p, struct Client *source_p, | |
120 | const char *command, int server, int parc, const char *parv[]) | |
121 | { | |
122 | struct Client *target_p; | |
123 | int wilds; | |
124 | rb_dlink_node *ptr; | |
125 | const char *old; | |
126 | char *new; | |
127 | ||
128 | /* | |
129 | * Assume it's me, if no server | |
130 | */ | |
131 | if(parc <= server || EmptyString(parv[server]) || | |
132 | match(parv[server], me.name) || (strcmp(parv[server], me.id) == 0)) | |
133 | return (HUNTED_ISME); | |
134 | ||
135 | new = LOCAL_COPY(parv[server]); | |
136 | ||
137 | /* | |
138 | * These are to pickup matches that would cause the following | |
139 | * message to go in the wrong direction while doing quick fast | |
140 | * non-matching lookups. | |
141 | */ | |
142 | if(MyClient(source_p)) | |
143 | target_p = find_named_client(new); | |
144 | else | |
145 | target_p = find_client(new); | |
146 | ||
147 | if(target_p) | |
148 | if(target_p->from == source_p->from && !MyConnect(target_p)) | |
149 | target_p = NULL; | |
150 | ||
151 | collapse(new); | |
152 | wilds = (strchr(new, '?') || strchr(new, '*')); | |
153 | ||
154 | /* | |
155 | * Again, if there are no wild cards involved in the server | |
156 | * name, use the hash lookup | |
157 | */ | |
158 | if(!target_p && wilds) | |
159 | { | |
160 | RB_DLINK_FOREACH(ptr, global_client_list.head) | |
161 | { | |
162 | if(match(new, ((struct Client *) (ptr->data))->name)) | |
163 | { | |
164 | target_p = ptr->data; | |
165 | break; | |
166 | } | |
167 | } | |
168 | } | |
169 | ||
170 | if(target_p && !IsRegistered(target_p)) | |
171 | target_p = NULL; | |
172 | ||
173 | if(target_p) | |
174 | { | |
175 | if(IsMe(target_p) || MyClient(target_p)) | |
176 | return HUNTED_ISME; | |
177 | ||
178 | old = parv[server]; | |
179 | parv[server] = get_id(target_p, target_p); | |
180 | ||
181 | sendto_one(target_p, command, get_id(source_p, target_p), | |
182 | parv[1], parv[2], parv[3], parv[4], parv[5], parv[6], parv[7], parv[8]); | |
183 | parv[server] = old; | |
184 | return (HUNTED_PASS); | |
185 | } | |
186 | ||
187 | if(MyClient(source_p) || !IsDigit(parv[server][0])) | |
188 | sendto_one_numeric(source_p, ERR_NOSUCHSERVER, | |
189 | form_str(ERR_NOSUCHSERVER), parv[server]); | |
190 | return (HUNTED_NOSUCH); | |
191 | } | |
192 | ||
193 | /* | |
194 | * try_connections - scan through configuration and try new connections. | |
195 | * Returns the calendar time when the next call to this | |
196 | * function should be made latest. (No harm done if this | |
197 | * is called earlier or later...) | |
198 | */ | |
199 | void | |
200 | try_connections(void *unused) | |
201 | { | |
202 | struct Client *client_p; | |
203 | struct server_conf *server_p = NULL; | |
204 | struct server_conf *tmp_p; | |
205 | struct Class *cltmp; | |
206 | rb_dlink_node *ptr; | |
207 | int connecting = FALSE; | |
208 | int confrq = 0; | |
209 | time_t next = 0; | |
210 | ||
211 | RB_DLINK_FOREACH(ptr, server_conf_list.head) | |
212 | { | |
213 | tmp_p = ptr->data; | |
214 | ||
215 | if(ServerConfIllegal(tmp_p) || !ServerConfAutoconn(tmp_p)) | |
216 | continue; | |
217 | ||
218 | /* don't allow ssl connections if ssl isn't setup */ | |
219 | if(ServerConfSSL(tmp_p) && (!ssl_ok || !get_ssld_count())) | |
220 | continue; | |
221 | ||
222 | cltmp = tmp_p->class; | |
223 | ||
224 | /* | |
225 | * Skip this entry if the use of it is still on hold until | |
226 | * future. Otherwise handle this entry (and set it on hold | |
227 | * until next time). Will reset only hold times, if already | |
228 | * made one successfull connection... [this algorithm is | |
229 | * a bit fuzzy... -- msa >;) ] | |
230 | */ | |
231 | if(tmp_p->hold > rb_current_time()) | |
232 | { | |
233 | if(next > tmp_p->hold || next == 0) | |
234 | next = tmp_p->hold; | |
235 | continue; | |
236 | } | |
237 | ||
238 | confrq = get_con_freq(cltmp); | |
239 | tmp_p->hold = rb_current_time() + confrq; | |
240 | ||
241 | /* | |
242 | * Found a CONNECT config with port specified, scan clients | |
243 | * and see if this server is already connected? | |
244 | */ | |
245 | client_p = find_server(NULL, tmp_p->name); | |
246 | ||
247 | if(!client_p && (CurrUsers(cltmp) < MaxUsers(cltmp)) && !connecting) | |
248 | { | |
249 | server_p = tmp_p; | |
250 | ||
251 | /* We connect only one at time... */ | |
252 | connecting = TRUE; | |
253 | } | |
254 | ||
255 | if((next > tmp_p->hold) || (next == 0)) | |
256 | next = tmp_p->hold; | |
257 | } | |
258 | ||
259 | /* TODO: change this to set active flag to 0 when added to event! --Habeeb */ | |
260 | if(GlobalSetOptions.autoconn == 0) | |
261 | return; | |
262 | ||
263 | if(!connecting) | |
264 | return; | |
265 | ||
266 | /* move this connect entry to end.. */ | |
267 | rb_dlinkDelete(&server_p->node, &server_conf_list); | |
268 | rb_dlinkAddTail(server_p, &server_p->node, &server_conf_list); | |
269 | ||
270 | /* | |
271 | * We used to only print this if serv_connect() actually | |
272 | * suceeded, but since rb_tcp_connect() can call the callback | |
273 | * immediately if there is an error, we were getting error messages | |
274 | * in the wrong order. SO, we just print out the activated line, | |
275 | * and let serv_connect() / serv_connect_callback() print an | |
276 | * error afterwards if it fails. | |
277 | * -- adrian | |
278 | */ | |
279 | sendto_realops_snomask(SNO_GENERAL, L_ALL, | |
280 | "Connection to %s activated", | |
281 | server_p->name); | |
282 | ||
283 | serv_connect(server_p, 0); | |
284 | } | |
285 | ||
286 | int | |
287 | check_server(const char *name, struct Client *client_p) | |
288 | { | |
289 | struct server_conf *server_p = NULL; | |
290 | struct server_conf *tmp_p; | |
291 | rb_dlink_node *ptr; | |
292 | int error = -1; | |
293 | ||
294 | s_assert(NULL != client_p); | |
295 | if(client_p == NULL) | |
296 | return error; | |
297 | ||
298 | if(!(client_p->localClient->passwd)) | |
299 | return -2; | |
300 | ||
301 | if(strlen(name) > HOSTLEN) | |
302 | return -4; | |
303 | ||
304 | RB_DLINK_FOREACH(ptr, server_conf_list.head) | |
305 | { | |
306 | tmp_p = ptr->data; | |
307 | ||
308 | if(ServerConfIllegal(tmp_p)) | |
309 | continue; | |
310 | ||
311 | if(!match(tmp_p->name, name)) | |
312 | continue; | |
313 | ||
314 | error = -3; | |
315 | ||
316 | /* XXX: Fix me for IPv6 */ | |
317 | /* XXX sockhost is the IPv4 ip as a string */ | |
318 | if(match(tmp_p->host, client_p->host) || | |
319 | match(tmp_p->host, client_p->sockhost)) | |
320 | { | |
321 | error = -2; | |
322 | ||
323 | if(tmp_p->passwd) | |
324 | { | |
325 | if(ServerConfEncrypted(tmp_p)) | |
326 | { | |
327 | if(!strcmp(tmp_p->passwd, rb_crypt(client_p->localClient->passwd, | |
328 | tmp_p->passwd))) | |
329 | { | |
330 | server_p = tmp_p; | |
331 | break; | |
332 | } | |
333 | else | |
334 | continue; | |
335 | } | |
336 | else if(strcmp(tmp_p->passwd, client_p->localClient->passwd)) | |
337 | continue; | |
338 | } | |
339 | ||
340 | if(tmp_p->certfp) | |
341 | { | |
342 | if(!client_p->certfp || strcasecmp(tmp_p->certfp, client_p->certfp) != 0) | |
343 | continue; | |
344 | } | |
345 | ||
346 | server_p = tmp_p; | |
347 | break; | |
348 | } | |
349 | } | |
350 | ||
351 | if(server_p == NULL) | |
352 | return error; | |
353 | ||
354 | if(ServerConfSSL(server_p) && client_p->localClient->ssl_ctl == NULL) | |
355 | { | |
356 | return -5; | |
357 | } | |
358 | ||
359 | attach_server_conf(client_p, server_p); | |
360 | ||
361 | /* clear ZIP/TB if they support but we dont want them */ | |
362 | #ifdef HAVE_LIBZ | |
363 | if(!ServerConfCompressed(server_p)) | |
364 | #endif | |
365 | ClearCap(client_p, CAP_ZIP); | |
366 | ||
367 | if(!ServerConfTb(server_p)) | |
368 | ClearCap(client_p, CAP_TB); | |
369 | ||
370 | return 0; | |
371 | } | |
372 | ||
373 | /* | |
374 | * send_capabilities | |
375 | * | |
376 | * inputs - Client pointer to send to | |
377 | * - int flag of capabilities that this server has | |
378 | * output - NONE | |
379 | * side effects - send the CAPAB line to a server -orabidoo | |
380 | * | |
381 | */ | |
382 | void | |
383 | send_capabilities(struct Client *client_p, int cap_can_send) | |
384 | { | |
385 | struct Capability *cap; | |
386 | char msgbuf[BUFSIZE]; | |
387 | char *t; | |
388 | int tl; | |
389 | ||
390 | t = msgbuf; | |
391 | ||
392 | for (cap = captab; cap->name; ++cap) | |
393 | { | |
394 | if(cap->cap & cap_can_send) | |
395 | { | |
396 | tl = rb_sprintf(t, "%s ", cap->name); | |
397 | t += tl; | |
398 | } | |
399 | } | |
400 | ||
401 | t--; | |
402 | *t = '\0'; | |
403 | ||
404 | sendto_one(client_p, "CAPAB :%s", msgbuf); | |
405 | } | |
406 | ||
407 | static void | |
408 | burst_ban(struct Client *client_p) | |
409 | { | |
410 | rb_dlink_node *ptr; | |
411 | struct ConfItem *aconf; | |
412 | const char *type, *oper; | |
413 | /* +5 for !,@,{,} and null */ | |
414 | char operbuf[NICKLEN + USERLEN + HOSTLEN + HOSTLEN + 5]; | |
415 | char *p; | |
416 | size_t melen; | |
417 | ||
418 | melen = strlen(me.name); | |
419 | RB_DLINK_FOREACH(ptr, prop_bans.head) | |
420 | { | |
421 | aconf = ptr->data; | |
422 | ||
423 | /* Skip expired stuff. */ | |
424 | if(aconf->lifetime < rb_current_time()) | |
425 | continue; | |
426 | switch(aconf->status & ~CONF_ILLEGAL) | |
427 | { | |
428 | case CONF_KILL: type = "K"; break; | |
429 | case CONF_DLINE: type = "D"; break; | |
430 | case CONF_XLINE: type = "X"; break; | |
431 | case CONF_RESV_NICK: type = "R"; break; | |
432 | case CONF_RESV_CHANNEL: type = "R"; break; | |
433 | default: | |
434 | continue; | |
435 | } | |
436 | oper = aconf->info.oper; | |
437 | if(aconf->flags & CONF_FLAGS_MYOPER) | |
438 | { | |
439 | /* Our operator{} names may not be meaningful | |
440 | * to other servers, so rewrite to our server | |
441 | * name. | |
442 | */ | |
443 | rb_strlcpy(operbuf, aconf->info.oper, sizeof buf); | |
444 | p = strrchr(operbuf, '{'); | |
445 | if (p != NULL && | |
446 | operbuf + sizeof operbuf - p > (ptrdiff_t)(melen + 2)) | |
447 | { | |
448 | memcpy(p + 1, me.name, melen); | |
449 | p[melen + 1] = '}'; | |
450 | p[melen + 2] = '\0'; | |
451 | oper = operbuf; | |
452 | } | |
453 | } | |
454 | sendto_one(client_p, ":%s BAN %s %s %s %lu %d %d %s :%s%s%s", | |
455 | me.id, | |
456 | type, | |
457 | aconf->user ? aconf->user : "*", aconf->host, | |
458 | (unsigned long)aconf->created, | |
459 | (int)(aconf->hold - aconf->created), | |
460 | (int)(aconf->lifetime - aconf->created), | |
461 | oper, | |
462 | aconf->passwd, | |
463 | aconf->spasswd ? "|" : "", | |
464 | aconf->spasswd ? aconf->spasswd : ""); | |
465 | } | |
466 | } | |
467 | ||
468 | /* burst_modes_TS6() | |
469 | * | |
470 | * input - client to burst to, channel name, list to burst, mode flag | |
471 | * output - | |
472 | * side effects - client is sent a list of +b, +e, or +I modes | |
473 | */ | |
474 | static void | |
475 | burst_modes_TS6(struct Client *client_p, struct Channel *chptr, | |
476 | rb_dlink_list *list, char flag) | |
477 | { | |
478 | rb_dlink_node *ptr; | |
479 | struct Ban *banptr; | |
480 | char *t; | |
481 | int tlen; | |
482 | int mlen; | |
483 | int cur_len; | |
484 | ||
485 | cur_len = mlen = rb_sprintf(buf, ":%s BMASK %ld %s %c :", | |
486 | me.id, (long) chptr->channelts, chptr->chname, flag); | |
487 | t = buf + mlen; | |
488 | ||
489 | RB_DLINK_FOREACH(ptr, list->head) | |
490 | { | |
491 | banptr = ptr->data; | |
492 | ||
493 | tlen = strlen(banptr->banstr) + 1; | |
494 | ||
495 | /* uh oh */ | |
496 | if(cur_len + tlen > BUFSIZE - 3) | |
497 | { | |
498 | /* the one we're trying to send doesnt fit at all! */ | |
499 | if(cur_len == mlen) | |
500 | { | |
501 | s_assert(0); | |
502 | continue; | |
503 | } | |
504 | ||
505 | /* chop off trailing space and send.. */ | |
506 | *(t-1) = '\0'; | |
507 | sendto_one(client_p, "%s", buf); | |
508 | cur_len = mlen; | |
509 | t = buf + mlen; | |
510 | } | |
511 | ||
512 | rb_sprintf(t, "%s ", banptr->banstr); | |
513 | t += tlen; | |
514 | cur_len += tlen; | |
515 | } | |
516 | ||
517 | /* cant ever exit the loop above without having modified buf, | |
518 | * chop off trailing space and send. | |
519 | */ | |
520 | *(t-1) = '\0'; | |
521 | sendto_one(client_p, "%s", buf); | |
522 | } | |
523 | ||
524 | /* | |
525 | * burst_TS6 | |
526 | * | |
527 | * inputs - client (server) to send nick towards | |
528 | * - client to send nick for | |
529 | * output - NONE | |
530 | * side effects - NICK message is sent towards given client_p | |
531 | */ | |
532 | static void | |
533 | burst_TS6(struct Client *client_p) | |
534 | { | |
535 | static char ubuf[12]; | |
536 | struct Client *target_p; | |
537 | struct Channel *chptr; | |
538 | struct membership *msptr; | |
539 | hook_data_client hclientinfo; | |
540 | hook_data_channel hchaninfo; | |
541 | rb_dlink_node *ptr; | |
542 | rb_dlink_node *uptr; | |
543 | char *t; | |
544 | int tlen, mlen; | |
545 | int cur_len = 0; | |
546 | struct Metadata *md; | |
547 | struct DictionaryIter iter; | |
548 | ||
549 | hclientinfo.client = hchaninfo.client = client_p; | |
550 | ||
551 | RB_DLINK_FOREACH(ptr, global_client_list.head) | |
552 | { | |
553 | target_p = ptr->data; | |
554 | ||
555 | if(!IsPerson(target_p)) | |
556 | continue; | |
557 | ||
558 | send_umode(NULL, target_p, 0, 0, ubuf); | |
559 | if(!*ubuf) | |
560 | { | |
561 | ubuf[0] = '+'; | |
562 | ubuf[1] = '\0'; | |
563 | } | |
564 | ||
565 | if(IsCapable(client_p, CAP_EUID)) | |
566 | sendto_one(client_p, ":%s EUID %s %d %ld %s %s %s %s %s %s %s :%s", | |
567 | target_p->servptr->id, target_p->name, | |
568 | target_p->hopcount + 1, | |
569 | (long) target_p->tsinfo, ubuf, | |
570 | target_p->username, target_p->host, | |
571 | IsIPSpoof(target_p) ? "0" : target_p->sockhost, | |
572 | target_p->id, | |
573 | IsDynSpoof(target_p) ? target_p->orighost : "*", | |
574 | EmptyString(target_p->user->suser) ? "*" : target_p->user->suser, | |
575 | target_p->info); | |
576 | else | |
577 | sendto_one(client_p, ":%s UID %s %d %ld %s %s %s %s %s :%s", | |
578 | target_p->servptr->id, target_p->name, | |
579 | target_p->hopcount + 1, | |
580 | (long) target_p->tsinfo, ubuf, | |
581 | target_p->username, target_p->host, | |
582 | IsIPSpoof(target_p) ? "0" : target_p->sockhost, | |
583 | target_p->id, target_p->info); | |
584 | ||
585 | if(!EmptyString(target_p->certfp)) | |
586 | sendto_one(client_p, ":%s ENCAP * CERTFP :%s", | |
587 | use_id(target_p), target_p->certfp); | |
588 | ||
589 | if(!IsCapable(client_p, CAP_EUID)) | |
590 | { | |
591 | if(IsDynSpoof(target_p)) | |
592 | sendto_one(client_p, ":%s ENCAP * REALHOST %s", | |
593 | use_id(target_p), target_p->orighost); | |
594 | if(!EmptyString(target_p->user->suser)) | |
595 | sendto_one(client_p, ":%s ENCAP * LOGIN %s", | |
596 | use_id(target_p), target_p->user->suser); | |
597 | } | |
598 | ||
599 | DICTIONARY_FOREACH(md, &iter, target_p->user->metadata) | |
600 | { | |
601 | sendto_one(client_p, ":%s ENCAP * METADATA ADD %s %s :%s", | |
602 | use_id(&me), use_id(target_p), md->name, md->value); | |
603 | } | |
604 | ||
605 | if(ConfigFileEntry.burst_away && !EmptyString(target_p->user->away)) | |
606 | sendto_one(client_p, ":%s AWAY :%s", | |
607 | use_id(target_p), | |
608 | target_p->user->away); | |
609 | ||
610 | hclientinfo.target = target_p; | |
611 | call_hook(h_burst_client, &hclientinfo); | |
612 | } | |
613 | ||
614 | RB_DLINK_FOREACH(ptr, global_channel_list.head) | |
615 | { | |
616 | chptr = ptr->data; | |
617 | ||
618 | if(*chptr->chname != '#') | |
619 | continue; | |
620 | ||
621 | cur_len = mlen = rb_sprintf(buf, ":%s SJOIN %ld %s %s :", me.id, | |
622 | (long) chptr->channelts, chptr->chname, | |
623 | channel_modes(chptr, client_p)); | |
624 | ||
625 | t = buf + mlen; | |
626 | ||
627 | RB_DLINK_FOREACH(uptr, chptr->members.head) | |
628 | { | |
629 | msptr = uptr->data; | |
630 | ||
631 | tlen = strlen(use_id(msptr->client_p)) + 1; | |
632 | if(is_admin(msptr)) | |
633 | tlen++; | |
634 | if(is_chanop(msptr)) | |
635 | tlen++; | |
636 | if(is_halfop(msptr)) | |
637 | tlen++; | |
638 | if(is_voiced(msptr)) | |
639 | tlen++; | |
640 | ||
641 | if(cur_len + tlen >= BUFSIZE - 3) | |
642 | { | |
643 | *(t-1) = '\0'; | |
644 | sendto_one(client_p, "%s", buf); | |
645 | cur_len = mlen; | |
646 | t = buf + mlen; | |
647 | } | |
648 | ||
649 | rb_sprintf(t, "%s%s ", find_channel_status(msptr, 1), | |
650 | use_id(msptr->client_p)); | |
651 | ||
652 | cur_len += tlen; | |
653 | t += tlen; | |
654 | } | |
655 | ||
656 | if (rb_dlink_list_length(&chptr->members) > 0) | |
657 | { | |
658 | /* remove trailing space */ | |
659 | *(t-1) = '\0'; | |
660 | } | |
661 | sendto_one(client_p, "%s", buf); | |
662 | ||
663 | DICTIONARY_FOREACH(md, &iter, chptr->metadata) | |
664 | { | |
665 | /* don't bother bursting +J metadata */ | |
666 | if(!(md->name[0] == 'K')) | |
667 | sendto_one(client_p, ":%s ENCAP * METADATA ADD %s %s :%s", | |
668 | use_id(&me), chptr->chname, md->name, md->value); | |
669 | } | |
670 | ||
671 | if(rb_dlink_list_length(&chptr->banlist) > 0) | |
672 | burst_modes_TS6(client_p, chptr, &chptr->banlist, 'b'); | |
673 | ||
674 | if(IsCapable(client_p, CAP_EX) && | |
675 | rb_dlink_list_length(&chptr->exceptlist) > 0) | |
676 | burst_modes_TS6(client_p, chptr, &chptr->exceptlist, 'e'); | |
677 | ||
678 | if(IsCapable(client_p, CAP_IE) && | |
679 | rb_dlink_list_length(&chptr->invexlist) > 0) | |
680 | burst_modes_TS6(client_p, chptr, &chptr->invexlist, 'I'); | |
681 | ||
682 | if(rb_dlink_list_length(&chptr->quietlist) > 0) | |
683 | burst_modes_TS6(client_p, chptr, &chptr->quietlist, 'q'); | |
684 | ||
685 | if(IsCapable(client_p, CAP_TB) && chptr->topic != NULL) | |
686 | sendto_one(client_p, ":%s TB %s %ld %s%s:%s", | |
687 | me.id, chptr->chname, (long) chptr->topic_time, | |
688 | ConfigChannel.burst_topicwho ? chptr->topic_info : "", | |
689 | ConfigChannel.burst_topicwho ? " " : "", | |
690 | chptr->topic); | |
691 | ||
692 | if(IsCapable(client_p, CAP_MLOCK)) | |
693 | sendto_one(client_p, ":%s MLOCK %ld %s :%s", | |
694 | me.id, (long) chptr->channelts, chptr->chname, | |
695 | EmptyString(chptr->mode_lock) ? "" : chptr->mode_lock); | |
696 | ||
697 | hchaninfo.chptr = chptr; | |
698 | call_hook(h_burst_channel, &hchaninfo); | |
699 | } | |
700 | ||
701 | hclientinfo.target = NULL; | |
702 | call_hook(h_burst_finished, &hclientinfo); | |
703 | } | |
704 | ||
705 | /* | |
706 | * show_capabilities - show current server capabilities | |
707 | * | |
708 | * inputs - pointer to an struct Client | |
709 | * output - pointer to static string | |
710 | * side effects - build up string representing capabilities of server listed | |
711 | */ | |
712 | const char * | |
713 | show_capabilities(struct Client *target_p) | |
714 | { | |
715 | static char msgbuf[BUFSIZE]; | |
716 | struct Capability *cap; | |
717 | ||
718 | if(has_id(target_p)) | |
719 | rb_strlcpy(msgbuf, " TS6", sizeof(msgbuf)); | |
720 | ||
721 | if(IsSSL(target_p)) | |
722 | rb_strlcat(msgbuf, " SSL", sizeof(msgbuf)); | |
723 | ||
724 | if(!IsServer(target_p) || !target_p->serv->caps) /* short circuit if no caps */ | |
725 | return msgbuf + 1; | |
726 | ||
727 | for (cap = captab; cap->cap; ++cap) | |
728 | { | |
729 | if(cap->cap & target_p->serv->caps) | |
730 | rb_snprintf_append(msgbuf, sizeof(msgbuf), " %s", cap->name); | |
731 | } | |
732 | ||
733 | return msgbuf + 1; | |
734 | } | |
735 | ||
736 | /* | |
737 | * server_estab | |
738 | * | |
739 | * inputs - pointer to a struct Client | |
740 | * output - | |
741 | * side effects - | |
742 | */ | |
743 | int | |
744 | server_estab(struct Client *client_p) | |
745 | { | |
746 | struct Client *target_p; | |
747 | struct server_conf *server_p; | |
748 | hook_data_client hdata; | |
749 | char *host; | |
750 | rb_dlink_node *ptr; | |
751 | char note[HOSTLEN + 15]; | |
752 | ||
753 | s_assert(NULL != client_p); | |
754 | if(client_p == NULL) | |
755 | return -1; | |
756 | ||
757 | host = client_p->name; | |
758 | ||
759 | if((server_p = client_p->localClient->att_sconf) == NULL) | |
760 | { | |
761 | /* This shouldn't happen, better tell the ops... -A1kmm */ | |
762 | sendto_realops_snomask(SNO_GENERAL, is_remote_connect(client_p) ? L_NETWIDE : L_ALL, | |
763 | "Warning: Lost connect{} block for server %s!", host); | |
764 | return exit_client(client_p, client_p, client_p, "Lost connect{} block!"); | |
765 | } | |
766 | ||
767 | /* We shouldn't have to check this, it should already done before | |
768 | * server_estab is called. -A1kmm | |
769 | */ | |
770 | if(client_p->localClient->passwd) | |
771 | { | |
772 | memset(client_p->localClient->passwd, 0, strlen(client_p->localClient->passwd)); | |
773 | rb_free(client_p->localClient->passwd); | |
774 | client_p->localClient->passwd = NULL; | |
775 | } | |
776 | ||
777 | /* Its got identd , since its a server */ | |
778 | SetGotId(client_p); | |
779 | ||
780 | /* If there is something in the serv_list, it might be this | |
781 | * connecting server.. | |
782 | */ | |
783 | if(!ServerInfo.hub && serv_list.head) | |
784 | { | |
785 | if(client_p != serv_list.head->data || serv_list.head->next) | |
786 | { | |
787 | ServerStats.is_ref++; | |
788 | sendto_one(client_p, "ERROR :I'm a leaf not a hub"); | |
789 | return exit_client(client_p, client_p, client_p, "I'm a leaf"); | |
790 | } | |
791 | } | |
792 | ||
793 | if(IsUnknown(client_p)) | |
794 | { | |
795 | /* the server may be linking based on certificate fingerprint now. --nenolod */ | |
796 | sendto_one(client_p, "PASS %s TS %d :%s", | |
797 | EmptyString(server_p->spasswd) ? "*" : server_p->spasswd, TS_CURRENT, me.id); | |
798 | ||
799 | /* pass info to new server */ | |
800 | send_capabilities(client_p, default_server_capabs | |
801 | | (ServerConfCompressed(server_p) ? CAP_ZIP_SUPPORTED : 0) | |
802 | | (ServerConfTb(server_p) ? CAP_TB : 0)); | |
803 | ||
804 | sendto_one(client_p, "SERVER %s 1 :%s%s", | |
805 | me.name, | |
806 | ConfigServerHide.hidden ? "(H) " : "", | |
807 | (me.info[0]) ? (me.info) : "IRCers United"); | |
808 | } | |
809 | ||
810 | if(!rb_set_buffers(client_p->localClient->F, READBUF_SIZE)) | |
811 | ilog_error("rb_set_buffers failed for server"); | |
812 | ||
813 | /* Enable compression now */ | |
814 | if(IsCapable(client_p, CAP_ZIP)) | |
815 | { | |
816 | start_zlib_session(client_p); | |
817 | } | |
818 | sendto_one(client_p, "SVINFO %d %d 0 :%ld", TS_CURRENT, TS_MIN, (long int)rb_current_time()); | |
819 | ||
820 | client_p->servptr = &me; | |
821 | ||
822 | if(IsAnyDead(client_p)) | |
823 | return CLIENT_EXITED; | |
824 | ||
825 | SetServer(client_p); | |
826 | ||
827 | /* Update the capability combination usage counts */ | |
828 | set_chcap_usage_counts(client_p); | |
829 | ||
830 | rb_dlinkAdd(client_p, &client_p->lnode, &me.serv->servers); | |
831 | rb_dlinkMoveNode(&client_p->localClient->tnode, &unknown_list, &serv_list); | |
832 | rb_dlinkAddTailAlloc(client_p, &global_serv_list); | |
833 | ||
834 | if(has_id(client_p)) | |
835 | add_to_id_hash(client_p->id, client_p); | |
836 | ||
837 | add_to_client_hash(client_p->name, client_p); | |
838 | /* doesnt duplicate client_p->serv if allocated this struct already */ | |
839 | make_server(client_p); | |
840 | ||
841 | client_p->serv->caps = client_p->localClient->caps; | |
842 | ||
843 | if(client_p->localClient->fullcaps) | |
844 | { | |
845 | client_p->serv->fullcaps = rb_strdup(client_p->localClient->fullcaps); | |
846 | rb_free(client_p->localClient->fullcaps); | |
847 | client_p->localClient->fullcaps = NULL; | |
848 | } | |
849 | ||
850 | client_p->serv->nameinfo = scache_connect(client_p->name, client_p->info, IsHidden(client_p)); | |
851 | client_p->localClient->firsttime = rb_current_time(); | |
852 | /* fixing eob timings.. -gnp */ | |
853 | ||
854 | if((rb_dlink_list_length(&lclient_list) + rb_dlink_list_length(&serv_list)) > | |
855 | (unsigned long)MaxConnectionCount) | |
856 | MaxConnectionCount = rb_dlink_list_length(&lclient_list) + | |
857 | rb_dlink_list_length(&serv_list); | |
858 | ||
859 | /* Show the real host/IP to admins */ | |
860 | sendto_realops_snomask(SNO_GENERAL, L_ALL, | |
861 | "Link with %s established: (%s) link", | |
862 | client_p->name, | |
863 | show_capabilities(client_p)); | |
864 | ||
865 | ilog(L_SERVER, "Link with %s established: (%s) link", | |
866 | log_client_name(client_p, SHOW_IP), show_capabilities(client_p)); | |
867 | ||
868 | hdata.client = &me; | |
869 | hdata.target = client_p; | |
870 | call_hook(h_server_introduced, &hdata); | |
871 | ||
872 | rb_snprintf(note, sizeof(note), "Server: %s", client_p->name); | |
873 | rb_note(client_p->localClient->F, note); | |
874 | ||
875 | /* | |
876 | ** Old sendto_serv_but_one() call removed because we now | |
877 | ** need to send different names to different servers | |
878 | ** (domain name matching) Send new server to other servers. | |
879 | */ | |
880 | RB_DLINK_FOREACH(ptr, serv_list.head) | |
881 | { | |
882 | target_p = ptr->data; | |
883 | ||
884 | if(target_p == client_p) | |
885 | continue; | |
886 | ||
887 | if(has_id(target_p) && has_id(client_p)) | |
888 | { | |
889 | sendto_one(target_p, ":%s SID %s 2 %s :%s%s", | |
890 | me.id, client_p->name, client_p->id, | |
891 | IsHidden(client_p) ? "(H) " : "", client_p->info); | |
892 | ||
893 | if(IsCapable(target_p, CAP_ENCAP) && | |
894 | !EmptyString(client_p->serv->fullcaps)) | |
895 | sendto_one(target_p, ":%s ENCAP * GCAP :%s", | |
896 | client_p->id, client_p->serv->fullcaps); | |
897 | } | |
898 | else | |
899 | { | |
900 | sendto_one(target_p, ":%s SERVER %s 2 :%s%s", | |
901 | me.name, client_p->name, | |
902 | IsHidden(client_p) ? "(H) " : "", client_p->info); | |
903 | ||
904 | if(IsCapable(target_p, CAP_ENCAP) && | |
905 | !EmptyString(client_p->serv->fullcaps)) | |
906 | sendto_one(target_p, ":%s ENCAP * GCAP :%s", | |
907 | client_p->name, client_p->serv->fullcaps); | |
908 | } | |
909 | } | |
910 | ||
911 | /* | |
912 | ** Pass on my client information to the new server | |
913 | ** | |
914 | ** First, pass only servers (idea is that if the link gets | |
915 | ** cancelled beacause the server was already there, | |
916 | ** there are no NICK's to be cancelled...). Of course, | |
917 | ** if cancellation occurs, all this info is sent anyway, | |
918 | ** and I guess the link dies when a read is attempted...? --msa | |
919 | ** | |
920 | ** Note: Link cancellation to occur at this point means | |
921 | ** that at least two servers from my fragment are building | |
922 | ** up connection this other fragment at the same time, it's | |
923 | ** a race condition, not the normal way of operation... | |
924 | ** | |
925 | ** ALSO NOTE: using the get_client_name for server names-- | |
926 | ** see previous *WARNING*!!! (Also, original inpath | |
927 | ** is destroyed...) | |
928 | */ | |
929 | RB_DLINK_FOREACH(ptr, global_serv_list.head) | |
930 | { | |
931 | target_p = ptr->data; | |
932 | ||
933 | /* target_p->from == target_p for target_p == client_p */ | |
934 | if(IsMe(target_p) || target_p->from == client_p) | |
935 | continue; | |
936 | ||
937 | /* presumption, if target has an id, so does its uplink */ | |
938 | if(has_id(client_p) && has_id(target_p)) | |
939 | sendto_one(client_p, ":%s SID %s %d %s :%s%s", | |
940 | target_p->servptr->id, target_p->name, | |
941 | target_p->hopcount + 1, target_p->id, | |
942 | IsHidden(target_p) ? "(H) " : "", target_p->info); | |
943 | else | |
944 | sendto_one(client_p, ":%s SERVER %s %d :%s%s", | |
945 | target_p->servptr->name, | |
946 | target_p->name, target_p->hopcount + 1, | |
947 | IsHidden(target_p) ? "(H) " : "", target_p->info); | |
948 | ||
949 | if(IsCapable(client_p, CAP_ENCAP) && | |
950 | !EmptyString(target_p->serv->fullcaps)) | |
951 | sendto_one(client_p, ":%s ENCAP * GCAP :%s", | |
952 | get_id(target_p, client_p), | |
953 | target_p->serv->fullcaps); | |
954 | } | |
955 | ||
956 | if(IsCapable(client_p, CAP_BAN)) | |
957 | burst_ban(client_p); | |
958 | ||
959 | burst_TS6(client_p); | |
960 | ||
961 | /* Always send a PING after connect burst is done */ | |
962 | sendto_one(client_p, "PING :%s", get_id(&me, client_p)); | |
963 | ||
964 | free_pre_client(client_p); | |
965 | ||
966 | send_pop_queue(client_p); | |
967 | ||
968 | return 0; | |
969 | } | |
970 | ||
971 | /* | |
972 | * New server connection code | |
973 | * Based upon the stuff floating about in s_bsd.c | |
974 | * -- adrian | |
975 | */ | |
976 | ||
977 | static int | |
978 | serv_connect_resolved(struct Client *client_p) | |
979 | { | |
980 | struct rb_sockaddr_storage myipnum; | |
981 | char vhoststr[HOSTIPLEN]; | |
982 | struct server_conf *server_p; | |
983 | uint16_t port; | |
984 | ||
985 | if((server_p = client_p->localClient->att_sconf) == NULL) | |
986 | { | |
987 | sendto_realops_snomask(SNO_GENERAL, is_remote_connect(client_p) ? L_NETWIDE : L_ALL, "Lost connect{} block for %s", | |
988 | client_p->name); | |
989 | exit_client(client_p, client_p, &me, "Lost connect{} block"); | |
990 | return 0; | |
991 | } | |
992 | ||
993 | #ifdef RB_IPV6 | |
994 | if(client_p->localClient->ip.ss_family == AF_INET6) | |
995 | port = ntohs(((struct sockaddr_in6 *)&client_p->localClient->ip)->sin6_port); | |
996 | else | |
997 | #endif | |
998 | port = ntohs(((struct sockaddr_in *)&client_p->localClient->ip)->sin_port); | |
999 | ||
1000 | if(ServerConfVhosted(server_p)) | |
1001 | { | |
1002 | memcpy(&myipnum, &server_p->my_ipnum, sizeof(myipnum)); | |
1003 | ((struct sockaddr_in *)&myipnum)->sin_port = 0; | |
1004 | myipnum.ss_family = server_p->aftype; | |
1005 | ||
1006 | } | |
1007 | else if(server_p->aftype == AF_INET && ServerInfo.specific_ipv4_vhost) | |
1008 | { | |
1009 | memcpy(&myipnum, &ServerInfo.ip, sizeof(myipnum)); | |
1010 | ((struct sockaddr_in *)&myipnum)->sin_port = 0; | |
1011 | myipnum.ss_family = AF_INET; | |
1012 | SET_SS_LEN(&myipnum, sizeof(struct sockaddr_in)); | |
1013 | } | |
1014 | ||
1015 | #ifdef RB_IPV6 | |
1016 | else if((server_p->aftype == AF_INET6) && ServerInfo.specific_ipv6_vhost) | |
1017 | { | |
1018 | memcpy(&myipnum, &ServerInfo.ip6, sizeof(myipnum)); | |
1019 | ((struct sockaddr_in6 *)&myipnum)->sin6_port = 0; | |
1020 | myipnum.ss_family = AF_INET6; | |
1021 | SET_SS_LEN(&myipnum, sizeof(struct sockaddr_in6)); | |
1022 | } | |
1023 | #endif | |
1024 | else | |
1025 | { | |
1026 | /* log */ | |
1027 | ilog(L_SERVER, "Connecting to %s[%s] port %d (%s)", client_p->name, client_p->sockhost, port, | |
1028 | #ifdef RB_IPV6 | |
1029 | server_p->aftype == AF_INET6 ? "IPv6" : | |
1030 | #endif | |
1031 | (server_p->aftype == AF_INET ? "IPv4" : "?")); | |
1032 | ||
1033 | if(ServerConfSSL(server_p)) | |
1034 | { | |
1035 | rb_connect_tcp(client_p->localClient->F, (struct sockaddr *)&client_p->localClient->ip, | |
1036 | NULL, 0, serv_connect_ssl_callback, | |
1037 | client_p, ConfigFileEntry.connect_timeout); | |
1038 | } | |
1039 | else | |
1040 | rb_connect_tcp(client_p->localClient->F, (struct sockaddr *)&client_p->localClient->ip, | |
1041 | NULL, 0, serv_connect_callback, | |
1042 | client_p, ConfigFileEntry.connect_timeout); | |
1043 | return 1; | |
1044 | } | |
1045 | ||
1046 | /* log */ | |
1047 | rb_inet_ntop_sock((struct sockaddr *)&myipnum, vhoststr, sizeof vhoststr); | |
1048 | ilog(L_SERVER, "Connecting to %s[%s] port %d (%s) (vhost %s)", client_p->name, client_p->sockhost, port, | |
1049 | #ifdef RB_IPV6 | |
1050 | server_p->aftype == AF_INET6 ? "IPv6" : | |
1051 | #endif | |
1052 | (server_p->aftype == AF_INET ? "IPv4" : "?"), vhoststr); | |
1053 | ||
1054 | ||
1055 | if(ServerConfSSL(server_p)) | |
1056 | rb_connect_tcp(client_p->localClient->F, (struct sockaddr *)&client_p->localClient->ip, | |
1057 | (struct sockaddr *) &myipnum, | |
1058 | GET_SS_LEN(&myipnum), serv_connect_ssl_callback, client_p, | |
1059 | ConfigFileEntry.connect_timeout); | |
1060 | else | |
1061 | rb_connect_tcp(client_p->localClient->F, (struct sockaddr *)&client_p->localClient->ip, | |
1062 | (struct sockaddr *) &myipnum, | |
1063 | GET_SS_LEN(&myipnum), serv_connect_callback, client_p, | |
1064 | ConfigFileEntry.connect_timeout); | |
1065 | ||
1066 | return 1; | |
1067 | } | |
1068 | ||
1069 | static void | |
1070 | serv_connect_dns_callback(void *vptr, struct DNSReply *reply) | |
1071 | { | |
1072 | struct Client *client_p = vptr; | |
1073 | uint16_t port; | |
1074 | ||
1075 | rb_free(client_p->localClient->dnsquery); | |
1076 | client_p->localClient->dnsquery = NULL; | |
1077 | ||
1078 | if (reply == NULL) | |
1079 | { | |
1080 | sendto_realops_snomask(SNO_GENERAL, is_remote_connect(client_p) ? L_NETWIDE : L_ALL, "Cannot resolve hostname for %s", | |
1081 | client_p->name); | |
1082 | ilog(L_SERVER, "Cannot resolve hostname for %s", | |
1083 | log_client_name(client_p, HIDE_IP)); | |
1084 | exit_client(client_p, client_p, &me, "Cannot resolve hostname"); | |
1085 | return; | |
1086 | } | |
1087 | #ifdef RB_IPV6 | |
1088 | if(reply->addr.ss_family == AF_INET6) | |
1089 | port = ((struct sockaddr_in6 *)&client_p->localClient->ip)->sin6_port; | |
1090 | else | |
1091 | #endif | |
1092 | port = ((struct sockaddr_in *)&client_p->localClient->ip)->sin_port; | |
1093 | memcpy(&client_p->localClient->ip, &reply->addr, sizeof(client_p->localClient->ip)); | |
1094 | #ifdef RB_IPV6 | |
1095 | if(reply->addr.ss_family == AF_INET6) | |
1096 | ((struct sockaddr_in6 *)&client_p->localClient->ip)->sin6_port = port; | |
1097 | else | |
1098 | #endif | |
1099 | ((struct sockaddr_in *)&client_p->localClient->ip)->sin_port = port; | |
1100 | /* Set sockhost properly now -- jilles */ | |
1101 | rb_inet_ntop_sock((struct sockaddr *)&client_p->localClient->ip, | |
1102 | client_p->sockhost, sizeof client_p->sockhost); | |
1103 | serv_connect_resolved(client_p); | |
1104 | } | |
1105 | ||
1106 | /* | |
1107 | * serv_connect() - initiate a server connection | |
1108 | * | |
1109 | * inputs - pointer to conf | |
1110 | * - pointer to client doing the connet | |
1111 | * output - | |
1112 | * side effects - | |
1113 | * | |
1114 | * This code initiates a connection to a server. It first checks to make | |
1115 | * sure the given server exists. If this is the case, it creates a socket, | |
1116 | * creates a client, saves the socket information in the client, and | |
1117 | * initiates a connection to the server through rb_connect_tcp(). The | |
1118 | * completion of this goes through serv_completed_connection(). | |
1119 | * | |
1120 | * We return 1 if the connection is attempted, since we don't know whether | |
1121 | * it suceeded or not, and 0 if it fails in here somewhere. | |
1122 | */ | |
1123 | int | |
1124 | serv_connect(struct server_conf *server_p, struct Client *by) | |
1125 | { | |
1126 | struct Client *client_p; | |
1127 | struct rb_sockaddr_storage theiripnum; | |
1128 | rb_fde_t *F; | |
1129 | char note[HOSTLEN + 10]; | |
1130 | ||
1131 | s_assert(server_p != NULL); | |
1132 | if(server_p == NULL) | |
1133 | return 0; | |
1134 | ||
1135 | /* | |
1136 | * Make sure this server isn't already connected | |
1137 | */ | |
1138 | if((client_p = find_server(NULL, server_p->name))) | |
1139 | { | |
1140 | sendto_realops_snomask(SNO_GENERAL, L_ALL, | |
1141 | "Server %s already present from %s", | |
1142 | server_p->name, client_p->name); | |
1143 | if(by && IsPerson(by) && !MyClient(by)) | |
1144 | sendto_one_notice(by, ":Server %s already present from %s", | |
1145 | server_p->name, client_p->name); | |
1146 | return 0; | |
1147 | } | |
1148 | ||
1149 | /* create a socket for the server connection */ | |
1150 | if((F = rb_socket(server_p->aftype, SOCK_STREAM, 0, NULL)) == NULL) | |
1151 | { | |
1152 | ilog_error("opening a stream socket"); | |
1153 | return 0; | |
1154 | } | |
1155 | ||
1156 | rb_snprintf(note, sizeof note, "Server: %s", server_p->name); | |
1157 | rb_note(F, note); | |
1158 | ||
1159 | /* Create a local client */ | |
1160 | client_p = make_client(NULL); | |
1161 | ||
1162 | /* Copy in the server, hostname, fd | |
1163 | * The sockhost may be a hostname, this will be corrected later | |
1164 | * -- jilles | |
1165 | */ | |
1166 | rb_strlcpy(client_p->name, server_p->name, sizeof(client_p->name)); | |
1167 | rb_strlcpy(client_p->host, server_p->host, sizeof(client_p->host)); | |
1168 | rb_strlcpy(client_p->sockhost, server_p->host, sizeof(client_p->sockhost)); | |
1169 | client_p->localClient->F = F; | |
1170 | add_to_cli_fd_hash(client_p); | |
1171 | ||
1172 | /* | |
1173 | * Set up the initial server evilness, ripped straight from | |
1174 | * connect_server(), so don't blame me for it being evil. | |
1175 | * -- adrian | |
1176 | */ | |
1177 | ||
1178 | if(!rb_set_buffers(client_p->localClient->F, READBUF_SIZE)) | |
1179 | { | |
1180 | ilog_error("setting the buffer size for a server connection"); | |
1181 | } | |
1182 | ||
1183 | /* | |
1184 | * Attach config entries to client here rather than in | |
1185 | * serv_connect_callback(). This to avoid null pointer references. | |
1186 | */ | |
1187 | attach_server_conf(client_p, server_p); | |
1188 | ||
1189 | /* | |
1190 | * at this point we have a connection in progress and C/N lines | |
1191 | * attached to the client, the socket info should be saved in the | |
1192 | * client and it should either be resolved or have a valid address. | |
1193 | * | |
1194 | * The socket has been connected or connect is in progress. | |
1195 | */ | |
1196 | make_server(client_p); | |
1197 | if(by && IsPerson(by)) | |
1198 | { | |
1199 | strcpy(client_p->serv->by, by->name); | |
1200 | if(client_p->serv->user) | |
1201 | free_user(client_p->serv->user, NULL); | |
1202 | client_p->serv->user = by->user; | |
1203 | by->user->refcnt++; | |
1204 | } | |
1205 | else | |
1206 | { | |
1207 | strcpy(client_p->serv->by, "AutoConn."); | |
1208 | if(client_p->serv->user) | |
1209 | free_user(client_p->serv->user, NULL); | |
1210 | client_p->serv->user = NULL; | |
1211 | } | |
1212 | SetConnecting(client_p); | |
1213 | rb_dlinkAddTail(client_p, &client_p->node, &global_client_list); | |
1214 | ||
1215 | if (rb_inet_pton_sock(server_p->host, (struct sockaddr *)&theiripnum) > 0) | |
1216 | { | |
1217 | memcpy(&client_p->localClient->ip, &theiripnum, sizeof(client_p->localClient->ip)); | |
1218 | #ifdef RB_IPV6 | |
1219 | if(theiripnum.ss_family == AF_INET6) | |
1220 | ((struct sockaddr_in6 *)&client_p->localClient->ip)->sin6_port = htons(server_p->port); | |
1221 | else | |
1222 | #endif | |
1223 | ((struct sockaddr_in *)&client_p->localClient->ip)->sin_port = htons(server_p->port); | |
1224 | ||
1225 | return serv_connect_resolved(client_p); | |
1226 | } | |
1227 | else | |
1228 | { | |
1229 | #ifdef RB_IPV6 | |
1230 | if(theiripnum.ss_family == AF_INET6) | |
1231 | ((struct sockaddr_in6 *)&client_p->localClient->ip)->sin6_port = htons(server_p->port); | |
1232 | else | |
1233 | #endif | |
1234 | ((struct sockaddr_in *)&client_p->localClient->ip)->sin_port = htons(server_p->port); | |
1235 | ||
1236 | client_p->localClient->dnsquery = rb_malloc(sizeof(struct DNSQuery)); | |
1237 | client_p->localClient->dnsquery->ptr = client_p; | |
1238 | client_p->localClient->dnsquery->callback = serv_connect_dns_callback; | |
1239 | gethost_byname_type(server_p->host, client_p->localClient->dnsquery, | |
1240 | #ifdef RB_IPV6 | |
1241 | server_p->aftype == AF_INET6 ? T_AAAA : | |
1242 | #endif | |
1243 | T_A); | |
1244 | return 1; | |
1245 | } | |
1246 | } | |
1247 | ||
1248 | static void | |
1249 | serv_connect_ssl_callback(rb_fde_t *F, int status, void *data) | |
1250 | { | |
1251 | struct Client *client_p = data; | |
1252 | rb_fde_t *xF[2]; | |
1253 | rb_connect_sockaddr(F, (struct sockaddr *)&client_p->localClient->ip, sizeof(client_p->localClient->ip)); | |
1254 | if(status != RB_OK) | |
1255 | { | |
1256 | /* Print error message, just like non-SSL. */ | |
1257 | serv_connect_callback(F, status, data); | |
1258 | return; | |
1259 | } | |
1260 | if(rb_socketpair(AF_UNIX, SOCK_STREAM, 0, &xF[0], &xF[1], "Outgoing ssld connection") == -1) | |
1261 | { | |
1262 | ilog_error("rb_socketpair failed for server"); | |
1263 | serv_connect_callback(F, RB_ERROR, data); | |
1264 | return; | |
1265 | ||
1266 | } | |
1267 | del_from_cli_fd_hash(client_p); | |
1268 | client_p->localClient->F = xF[0]; | |
1269 | add_to_cli_fd_hash(client_p); | |
1270 | ||
1271 | client_p->localClient->ssl_ctl = start_ssld_connect(F, xF[1], rb_get_fd(xF[0])); | |
1272 | SetSSL(client_p); | |
1273 | serv_connect_callback(client_p->localClient->F, RB_OK, client_p); | |
1274 | } | |
1275 | ||
1276 | /* | |
1277 | * serv_connect_callback() - complete a server connection. | |
1278 | * | |
1279 | * This routine is called after the server connection attempt has | |
1280 | * completed. If unsucessful, an error is sent to ops and the client | |
1281 | * is closed. If sucessful, it goes through the initialisation/check | |
1282 | * procedures, the capabilities are sent, and the socket is then | |
1283 | * marked for reading. | |
1284 | */ | |
1285 | static void | |
1286 | serv_connect_callback(rb_fde_t *F, int status, void *data) | |
1287 | { | |
1288 | struct Client *client_p = data; | |
1289 | struct server_conf *server_p; | |
1290 | char *errstr; | |
1291 | ||
1292 | /* First, make sure its a real client! */ | |
1293 | s_assert(client_p != NULL); | |
1294 | s_assert(client_p->localClient->F == F); | |
1295 | ||
1296 | if(client_p == NULL) | |
1297 | return; | |
1298 | ||
1299 | /* while we were waiting for the callback, its possible this already | |
1300 | * linked in.. --fl | |
1301 | */ | |
1302 | if(find_server(NULL, client_p->name) != NULL) | |
1303 | { | |
1304 | exit_client(client_p, client_p, &me, "Server Exists"); | |
1305 | return; | |
1306 | } | |
1307 | ||
1308 | if(client_p->localClient->ssl_ctl == NULL) | |
1309 | rb_connect_sockaddr(F, (struct sockaddr *)&client_p->localClient->ip, sizeof(client_p->localClient->ip)); | |
1310 | ||
1311 | /* Check the status */ | |
1312 | if(status != RB_OK) | |
1313 | { | |
1314 | /* COMM_ERR_TIMEOUT wont have an errno associated with it, | |
1315 | * the others will.. --fl | |
1316 | */ | |
1317 | if(status == RB_ERR_TIMEOUT) | |
1318 | { | |
1319 | sendto_realops_snomask(SNO_GENERAL, is_remote_connect(client_p) ? L_NETWIDE : L_ALL, | |
1320 | "Error connecting to %s[%s]: %s", | |
1321 | client_p->name, | |
1322 | "255.255.255.255", | |
1323 | rb_errstr(status)); | |
1324 | ilog(L_SERVER, "Error connecting to %s[%s]: %s", | |
1325 | client_p->name, client_p->sockhost, | |
1326 | rb_errstr(status)); | |
1327 | } | |
1328 | else | |
1329 | { | |
1330 | errstr = strerror(rb_get_sockerr(F)); | |
1331 | sendto_realops_snomask(SNO_GENERAL, is_remote_connect(client_p) ? L_NETWIDE : L_ALL, | |
1332 | "Error connecting to %s[%s]: %s (%s)", | |
1333 | client_p->name, | |
1334 | "255.255.255.255", | |
1335 | rb_errstr(status), errstr); | |
1336 | ilog(L_SERVER, "Error connecting to %s[%s]: %s (%s)", | |
1337 | client_p->name, client_p->sockhost, | |
1338 | rb_errstr(status), errstr); | |
1339 | } | |
1340 | ||
1341 | exit_client(client_p, client_p, &me, rb_errstr(status)); | |
1342 | return; | |
1343 | } | |
1344 | ||
1345 | /* COMM_OK, so continue the connection procedure */ | |
1346 | /* Get the C/N lines */ | |
1347 | if((server_p = client_p->localClient->att_sconf) == NULL) | |
1348 | { | |
1349 | sendto_realops_snomask(SNO_GENERAL, is_remote_connect(client_p) ? L_NETWIDE : L_ALL, "Lost connect{} block for %s", | |
1350 | client_p->name); | |
1351 | exit_client(client_p, client_p, &me, "Lost connect{} block"); | |
1352 | return; | |
1353 | } | |
1354 | ||
1355 | /* Next, send the initial handshake */ | |
1356 | SetHandshake(client_p); | |
1357 | ||
1358 | /* the server may be linking based on certificate fingerprint now. --nenolod */ | |
1359 | sendto_one(client_p, "PASS %s TS %d :%s", | |
1360 | EmptyString(server_p->spasswd) ? "*" : server_p->spasswd, TS_CURRENT, me.id); | |
1361 | ||
1362 | /* pass my info to the new server */ | |
1363 | send_capabilities(client_p, default_server_capabs | |
1364 | | (ServerConfCompressed(server_p) ? CAP_ZIP_SUPPORTED : 0) | |
1365 | | (ServerConfTb(server_p) ? CAP_TB : 0)); | |
1366 | ||
1367 | sendto_one(client_p, "SERVER %s 1 :%s%s", | |
1368 | me.name, | |
1369 | ConfigServerHide.hidden ? "(H) " : "", me.info); | |
1370 | ||
1371 | /* | |
1372 | * If we've been marked dead because a send failed, just exit | |
1373 | * here now and save everyone the trouble of us ever existing. | |
1374 | */ | |
1375 | if(IsAnyDead(client_p)) | |
1376 | { | |
1377 | sendto_realops_snomask(SNO_GENERAL, is_remote_connect(client_p) ? L_NETWIDE : L_ALL, | |
1378 | "%s went dead during handshake", client_p->name); | |
1379 | exit_client(client_p, client_p, &me, "Went dead during handshake"); | |
1380 | return; | |
1381 | } | |
1382 | ||
1383 | /* don't move to serv_list yet -- we haven't sent a burst! */ | |
1384 | ||
1385 | /* If we get here, we're ok, so lets start reading some data */ | |
1386 | read_packet(F, client_p); | |
1387 | } |