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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 "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 "capability.h" | |
57 | #include "s_assert.h" | |
58 | ||
59 | #ifndef INADDR_NONE | |
60 | #define INADDR_NONE ((unsigned int) 0xffffffff) | |
61 | #endif | |
62 | ||
63 | int MaxConnectionCount = 1; | |
64 | int MaxClientCount = 1; | |
65 | int refresh_user_links = 0; | |
66 | ||
67 | static char buf[BUFSIZE]; | |
68 | ||
69 | /* | |
70 | * list of recognized server capabilities. "TS" is not on the list | |
71 | * because all servers that we talk to already do TS, and the kludged | |
72 | * extra argument to "PASS" takes care of checking that. -orabidoo | |
73 | */ | |
74 | struct CapabilityIndex *serv_capindex = NULL; | |
75 | struct CapabilityIndex *cli_capindex = NULL; | |
76 | ||
77 | unsigned int CAP_CAP; | |
78 | unsigned int CAP_QS; | |
79 | unsigned int CAP_EX; | |
80 | unsigned int CAP_CHW; | |
81 | unsigned int CAP_IE; | |
82 | unsigned int CAP_KLN; | |
83 | unsigned int CAP_ZIP; | |
84 | unsigned int CAP_KNOCK; | |
85 | unsigned int CAP_TB; | |
86 | unsigned int CAP_UNKLN; | |
87 | unsigned int CAP_CLUSTER; | |
88 | unsigned int CAP_ENCAP; | |
89 | unsigned int CAP_TS6; | |
90 | unsigned int CAP_SERVICE; | |
91 | unsigned int CAP_RSFNC; | |
92 | unsigned int CAP_SAVE; | |
93 | unsigned int CAP_EUID; | |
94 | unsigned int CAP_EOPMOD; | |
95 | unsigned int CAP_BAN; | |
96 | unsigned int CAP_MLOCK; | |
97 | ||
98 | /* | |
99 | * initialize our builtin capability table. --nenolod | |
100 | */ | |
101 | void | |
102 | init_builtin_capabs(void) | |
103 | { | |
104 | serv_capindex = capability_index_create("server capabilities"); | |
105 | ||
106 | /* These two are not set via CAPAB/GCAP keywords. */ | |
107 | CAP_CAP = capability_put_anonymous(serv_capindex); | |
108 | CAP_TS6 = capability_put_anonymous(serv_capindex); | |
109 | ||
110 | CAP_QS = capability_put(serv_capindex, "QS", NULL); | |
111 | CAP_EX = capability_put(serv_capindex, "EX", NULL); | |
112 | CAP_CHW = capability_put(serv_capindex, "CHW", NULL); | |
113 | CAP_IE = capability_put(serv_capindex, "IE", NULL); | |
114 | CAP_KLN = capability_put(serv_capindex, "KLN", NULL); | |
115 | CAP_KNOCK = capability_put(serv_capindex, "KNOCK", NULL); | |
116 | CAP_ZIP = capability_put(serv_capindex, "ZIP", NULL); | |
117 | CAP_TB = capability_put(serv_capindex, "TB", NULL); | |
118 | CAP_UNKLN = capability_put(serv_capindex, "UNKLN", NULL); | |
119 | CAP_CLUSTER = capability_put(serv_capindex, "CLUSTER", NULL); | |
120 | CAP_ENCAP = capability_put(serv_capindex, "ENCAP", NULL); | |
121 | CAP_SERVICE = capability_put(serv_capindex, "SERVICES", NULL); | |
122 | CAP_RSFNC = capability_put(serv_capindex, "RSFNC", NULL); | |
123 | CAP_SAVE = capability_put(serv_capindex, "SAVE", NULL); | |
124 | CAP_EUID = capability_put(serv_capindex, "EUID", NULL); | |
125 | CAP_EOPMOD = capability_put(serv_capindex, "EOPMOD", NULL); | |
126 | CAP_BAN = capability_put(serv_capindex, "BAN", NULL); | |
127 | CAP_MLOCK = capability_put(serv_capindex, "MLOCK", NULL); | |
128 | ||
129 | capability_require(serv_capindex, "QS"); | |
130 | capability_require(serv_capindex, "EX"); | |
131 | capability_require(serv_capindex, "IE"); | |
132 | capability_require(serv_capindex, "ENCAP"); | |
133 | ||
134 | cli_capindex = capability_index_create("client capabilities"); | |
135 | } | |
136 | ||
137 | static CNCB serv_connect_callback; | |
138 | static CNCB serv_connect_ssl_callback; | |
139 | ||
140 | /* | |
141 | * hunt_server - Do the basic thing in delivering the message (command) | |
142 | * across the relays to the specific server (server) for | |
143 | * actions. | |
144 | * | |
145 | * Note: The command is a format string and *MUST* be | |
146 | * of prefixed style (e.g. ":%s COMMAND %s ..."). | |
147 | * Command can have only max 8 parameters. | |
148 | * | |
149 | * server parv[server] is the parameter identifying the | |
150 | * target server. | |
151 | * | |
152 | * *WARNING* | |
153 | * parv[server] is replaced with the pointer to the | |
154 | * real servername from the matched client (I'm lazy | |
155 | * now --msa). | |
156 | * | |
157 | * returns: (see #defines) | |
158 | */ | |
159 | int | |
160 | hunt_server(struct Client *client_p, struct Client *source_p, | |
161 | const char *command, int server, int parc, const char *parv[]) | |
162 | { | |
163 | struct Client *target_p; | |
164 | int wilds; | |
165 | rb_dlink_node *ptr; | |
166 | const char *old; | |
167 | char *new; | |
168 | ||
169 | /* | |
170 | * Assume it's me, if no server | |
171 | */ | |
172 | if(parc <= server || EmptyString(parv[server]) || | |
173 | match(parv[server], me.name) || (strcmp(parv[server], me.id) == 0)) | |
174 | return (HUNTED_ISME); | |
175 | ||
176 | new = LOCAL_COPY(parv[server]); | |
177 | ||
178 | /* | |
179 | * These are to pickup matches that would cause the following | |
180 | * message to go in the wrong direction while doing quick fast | |
181 | * non-matching lookups. | |
182 | */ | |
183 | if(MyClient(source_p)) | |
184 | target_p = find_named_client(new); | |
185 | else | |
186 | target_p = find_client(new); | |
187 | ||
188 | if(target_p) | |
189 | if(target_p->from == source_p->from && !MyConnect(target_p)) | |
190 | target_p = NULL; | |
191 | ||
192 | collapse(new); | |
193 | wilds = (strchr(new, '?') || strchr(new, '*')); | |
194 | ||
195 | /* | |
196 | * Again, if there are no wild cards involved in the server | |
197 | * name, use the hash lookup | |
198 | */ | |
199 | if(!target_p && wilds) | |
200 | { | |
201 | RB_DLINK_FOREACH(ptr, global_serv_list.head) | |
202 | { | |
203 | if(match(new, ((struct Client *) (ptr->data))->name)) | |
204 | { | |
205 | target_p = ptr->data; | |
206 | break; | |
207 | } | |
208 | } | |
209 | } | |
210 | ||
211 | if(target_p && !IsRegistered(target_p)) | |
212 | target_p = NULL; | |
213 | ||
214 | if(target_p) | |
215 | { | |
216 | if(IsMe(target_p) || MyClient(target_p)) | |
217 | return HUNTED_ISME; | |
218 | ||
219 | old = parv[server]; | |
220 | parv[server] = get_id(target_p, target_p); | |
221 | ||
222 | sendto_one(target_p, command, get_id(source_p, target_p), | |
223 | parv[1], parv[2], parv[3], parv[4], parv[5], parv[6], parv[7], parv[8]); | |
224 | parv[server] = old; | |
225 | return (HUNTED_PASS); | |
226 | } | |
227 | ||
228 | if(MyClient(source_p) || !IsDigit(parv[server][0])) | |
229 | sendto_one_numeric(source_p, ERR_NOSUCHSERVER, | |
230 | form_str(ERR_NOSUCHSERVER), parv[server]); | |
231 | return (HUNTED_NOSUCH); | |
232 | } | |
233 | ||
234 | /* | |
235 | * try_connections - scan through configuration and try new connections. | |
236 | * Returns the calendar time when the next call to this | |
237 | * function should be made latest. (No harm done if this | |
238 | * is called earlier or later...) | |
239 | */ | |
240 | void | |
241 | try_connections(void *unused) | |
242 | { | |
243 | struct Client *client_p; | |
244 | struct server_conf *server_p = NULL; | |
245 | struct server_conf *tmp_p; | |
246 | struct Class *cltmp; | |
247 | rb_dlink_node *ptr; | |
248 | int connecting = FALSE; | |
249 | int confrq = 0; | |
250 | time_t next = 0; | |
251 | ||
252 | RB_DLINK_FOREACH(ptr, server_conf_list.head) | |
253 | { | |
254 | tmp_p = ptr->data; | |
255 | ||
256 | if(ServerConfIllegal(tmp_p) || !ServerConfAutoconn(tmp_p)) | |
257 | continue; | |
258 | ||
259 | /* don't allow ssl connections if ssl isn't setup */ | |
260 | if(ServerConfSSL(tmp_p) && (!ssl_ok || !get_ssld_count())) | |
261 | continue; | |
262 | ||
263 | cltmp = tmp_p->class; | |
264 | ||
265 | /* | |
266 | * Skip this entry if the use of it is still on hold until | |
267 | * future. Otherwise handle this entry (and set it on hold | |
268 | * until next time). Will reset only hold times, if already | |
269 | * made one successfull connection... [this algorithm is | |
270 | * a bit fuzzy... -- msa >;) ] | |
271 | */ | |
272 | if(tmp_p->hold > rb_current_time()) | |
273 | { | |
274 | if(next > tmp_p->hold || next == 0) | |
275 | next = tmp_p->hold; | |
276 | continue; | |
277 | } | |
278 | ||
279 | confrq = get_con_freq(cltmp); | |
280 | tmp_p->hold = rb_current_time() + confrq; | |
281 | ||
282 | /* | |
283 | * Found a CONNECT config with port specified, scan clients | |
284 | * and see if this server is already connected? | |
285 | */ | |
286 | client_p = find_server(NULL, tmp_p->name); | |
287 | ||
288 | if(!client_p && (CurrUsers(cltmp) < MaxUsers(cltmp)) && !connecting) | |
289 | { | |
290 | server_p = tmp_p; | |
291 | ||
292 | /* We connect only one at time... */ | |
293 | connecting = TRUE; | |
294 | } | |
295 | ||
296 | if((next > tmp_p->hold) || (next == 0)) | |
297 | next = tmp_p->hold; | |
298 | } | |
299 | ||
300 | /* TODO: change this to set active flag to 0 when added to event! --Habeeb */ | |
301 | if(GlobalSetOptions.autoconn == 0) | |
302 | return; | |
303 | ||
304 | if(!connecting) | |
305 | return; | |
306 | ||
307 | /* move this connect entry to end.. */ | |
308 | rb_dlinkDelete(&server_p->node, &server_conf_list); | |
309 | rb_dlinkAddTail(server_p, &server_p->node, &server_conf_list); | |
310 | ||
311 | /* | |
312 | * We used to only print this if serv_connect() actually | |
313 | * suceeded, but since rb_tcp_connect() can call the callback | |
314 | * immediately if there is an error, we were getting error messages | |
315 | * in the wrong order. SO, we just print out the activated line, | |
316 | * and let serv_connect() / serv_connect_callback() print an | |
317 | * error afterwards if it fails. | |
318 | * -- adrian | |
319 | */ | |
320 | sendto_realops_snomask(SNO_GENERAL, L_ALL, | |
321 | "Connection to %s activated", | |
322 | server_p->name); | |
323 | ||
324 | serv_connect(server_p, 0); | |
325 | } | |
326 | ||
327 | int | |
328 | check_server(const char *name, struct Client *client_p) | |
329 | { | |
330 | struct server_conf *server_p = NULL; | |
331 | struct server_conf *tmp_p; | |
332 | rb_dlink_node *ptr; | |
333 | int error = -1; | |
334 | const char *encr; | |
335 | ||
336 | s_assert(NULL != client_p); | |
337 | if(client_p == NULL) | |
338 | return error; | |
339 | ||
340 | if(!(client_p->localClient->passwd)) | |
341 | return -2; | |
342 | ||
343 | if(strlen(name) > HOSTLEN) | |
344 | return -4; | |
345 | ||
346 | RB_DLINK_FOREACH(ptr, server_conf_list.head) | |
347 | { | |
348 | tmp_p = ptr->data; | |
349 | ||
350 | if(ServerConfIllegal(tmp_p)) | |
351 | continue; | |
352 | ||
353 | if(!match(tmp_p->name, name)) | |
354 | continue; | |
355 | ||
356 | error = -3; | |
357 | ||
358 | /* XXX: Fix me for IPv6 */ | |
359 | /* XXX sockhost is the IPv4 ip as a string */ | |
360 | if(match(tmp_p->host, client_p->host) || | |
361 | match(tmp_p->host, client_p->sockhost)) | |
362 | { | |
363 | error = -2; | |
364 | ||
365 | if(tmp_p->passwd) | |
366 | { | |
367 | if(ServerConfEncrypted(tmp_p)) | |
368 | { | |
369 | encr = rb_crypt(client_p->localClient->passwd, | |
370 | tmp_p->passwd); | |
371 | if(encr != NULL && !strcmp(tmp_p->passwd, encr)) | |
372 | { | |
373 | server_p = tmp_p; | |
374 | break; | |
375 | } | |
376 | else | |
377 | continue; | |
378 | } | |
379 | else if(strcmp(tmp_p->passwd, client_p->localClient->passwd)) | |
380 | continue; | |
381 | } | |
382 | ||
383 | if(tmp_p->certfp) | |
384 | { | |
385 | if(!client_p->certfp || strcasecmp(tmp_p->certfp, client_p->certfp) != 0) | |
386 | continue; | |
387 | } | |
388 | ||
389 | server_p = tmp_p; | |
390 | break; | |
391 | } | |
392 | } | |
393 | ||
394 | if(server_p == NULL) | |
395 | return error; | |
396 | ||
397 | if(ServerConfSSL(server_p) && client_p->localClient->ssl_ctl == NULL) | |
398 | { | |
399 | return -5; | |
400 | } | |
401 | ||
402 | attach_server_conf(client_p, server_p); | |
403 | ||
404 | /* clear ZIP/TB if they support but we dont want them */ | |
405 | #ifdef HAVE_LIBZ | |
406 | if(!ServerConfCompressed(server_p)) | |
407 | #endif | |
408 | ClearCap(client_p, CAP_ZIP); | |
409 | ||
410 | if(!ServerConfTb(server_p)) | |
411 | ClearCap(client_p, CAP_TB); | |
412 | ||
413 | return 0; | |
414 | } | |
415 | ||
416 | /* | |
417 | * send_capabilities | |
418 | * | |
419 | * inputs - Client pointer to send to | |
420 | * - int flag of capabilities that this server has | |
421 | * output - NONE | |
422 | * side effects - send the CAPAB line to a server -orabidoo | |
423 | * | |
424 | */ | |
425 | void | |
426 | send_capabilities(struct Client *client_p, unsigned int cap_can_send) | |
427 | { | |
428 | sendto_one(client_p, "CAPAB :%s", capability_index_list(serv_capindex, cap_can_send)); | |
429 | } | |
430 | ||
431 | static void | |
432 | burst_ban(struct Client *client_p) | |
433 | { | |
434 | rb_dlink_node *ptr; | |
435 | struct ConfItem *aconf; | |
436 | const char *type, *oper; | |
437 | /* +5 for !,@,{,} and null */ | |
438 | char operbuf[NICKLEN + USERLEN + HOSTLEN + HOSTLEN + 5]; | |
439 | char *p; | |
440 | size_t melen; | |
441 | ||
442 | melen = strlen(me.name); | |
443 | RB_DLINK_FOREACH(ptr, prop_bans.head) | |
444 | { | |
445 | aconf = ptr->data; | |
446 | ||
447 | /* Skip expired stuff. */ | |
448 | if(aconf->lifetime < rb_current_time()) | |
449 | continue; | |
450 | switch(aconf->status & ~CONF_ILLEGAL) | |
451 | { | |
452 | case CONF_KILL: type = "K"; break; | |
453 | case CONF_DLINE: type = "D"; break; | |
454 | case CONF_XLINE: type = "X"; break; | |
455 | case CONF_RESV_NICK: type = "R"; break; | |
456 | case CONF_RESV_CHANNEL: type = "R"; break; | |
457 | default: | |
458 | continue; | |
459 | } | |
460 | oper = aconf->info.oper; | |
461 | if(aconf->flags & CONF_FLAGS_MYOPER) | |
462 | { | |
463 | /* Our operator{} names may not be meaningful | |
464 | * to other servers, so rewrite to our server | |
465 | * name. | |
466 | */ | |
467 | rb_strlcpy(operbuf, aconf->info.oper, sizeof buf); | |
468 | p = strrchr(operbuf, '{'); | |
469 | if (p != NULL && | |
470 | operbuf + sizeof operbuf - p > (ptrdiff_t)(melen + 2)) | |
471 | { | |
472 | memcpy(p + 1, me.name, melen); | |
473 | p[melen + 1] = '}'; | |
474 | p[melen + 2] = '\0'; | |
475 | oper = operbuf; | |
476 | } | |
477 | } | |
478 | sendto_one(client_p, ":%s BAN %s %s %s %lu %d %d %s :%s%s%s", | |
479 | me.id, | |
480 | type, | |
481 | aconf->user ? aconf->user : "*", aconf->host, | |
482 | (unsigned long)aconf->created, | |
483 | (int)(aconf->hold - aconf->created), | |
484 | (int)(aconf->lifetime - aconf->created), | |
485 | oper, | |
486 | aconf->passwd, | |
487 | aconf->spasswd ? "|" : "", | |
488 | aconf->spasswd ? aconf->spasswd : ""); | |
489 | } | |
490 | } | |
491 | ||
492 | /* burst_modes_TS6() | |
493 | * | |
494 | * input - client to burst to, channel name, list to burst, mode flag | |
495 | * output - | |
496 | * side effects - client is sent a list of +b, +e, or +I modes | |
497 | */ | |
498 | static void | |
499 | burst_modes_TS6(struct Client *client_p, struct Channel *chptr, | |
500 | rb_dlink_list *list, char flag) | |
501 | { | |
502 | rb_dlink_node *ptr; | |
503 | struct Ban *banptr; | |
504 | char *t; | |
505 | int tlen; | |
506 | int mlen; | |
507 | int cur_len; | |
508 | ||
509 | cur_len = mlen = sprintf(buf, ":%s BMASK %ld %s %c :", | |
510 | me.id, (long) chptr->channelts, chptr->chname, flag); | |
511 | t = buf + mlen; | |
512 | ||
513 | RB_DLINK_FOREACH(ptr, list->head) | |
514 | { | |
515 | banptr = ptr->data; | |
516 | ||
517 | tlen = strlen(banptr->banstr) + (banptr->forward ? strlen(banptr->forward) + 1 : 0) + 1; | |
518 | ||
519 | /* uh oh */ | |
520 | if(cur_len + tlen > BUFSIZE - 3) | |
521 | { | |
522 | /* the one we're trying to send doesnt fit at all! */ | |
523 | if(cur_len == mlen) | |
524 | { | |
525 | s_assert(0); | |
526 | continue; | |
527 | } | |
528 | ||
529 | /* chop off trailing space and send.. */ | |
530 | *(t-1) = '\0'; | |
531 | sendto_one(client_p, "%s", buf); | |
532 | cur_len = mlen; | |
533 | t = buf + mlen; | |
534 | } | |
535 | ||
536 | if (banptr->forward) | |
537 | sprintf(t, "%s$%s ", banptr->banstr, banptr->forward); | |
538 | else | |
539 | sprintf(t, "%s ", banptr->banstr); | |
540 | t += tlen; | |
541 | cur_len += tlen; | |
542 | } | |
543 | ||
544 | /* cant ever exit the loop above without having modified buf, | |
545 | * chop off trailing space and send. | |
546 | */ | |
547 | *(t-1) = '\0'; | |
548 | sendto_one(client_p, "%s", buf); | |
549 | } | |
550 | ||
551 | /* | |
552 | * burst_TS6 | |
553 | * | |
554 | * inputs - client (server) to send nick towards | |
555 | * - client to send nick for | |
556 | * output - NONE | |
557 | * side effects - NICK message is sent towards given client_p | |
558 | */ | |
559 | static void | |
560 | burst_TS6(struct Client *client_p) | |
561 | { | |
562 | char ubuf[BUFSIZE]; | |
563 | struct Client *target_p; | |
564 | struct Channel *chptr; | |
565 | struct membership *msptr; | |
566 | hook_data_client hclientinfo; | |
567 | hook_data_channel hchaninfo; | |
568 | rb_dlink_node *ptr; | |
569 | rb_dlink_node *uptr; | |
570 | char *t; | |
571 | int tlen, mlen; | |
572 | int cur_len = 0; | |
573 | ||
574 | hclientinfo.client = hchaninfo.client = client_p; | |
575 | ||
576 | RB_DLINK_FOREACH(ptr, global_client_list.head) | |
577 | { | |
578 | target_p = ptr->data; | |
579 | ||
580 | if(!IsPerson(target_p)) | |
581 | continue; | |
582 | ||
583 | send_umode(NULL, target_p, 0, ubuf); | |
584 | if(!*ubuf) | |
585 | { | |
586 | ubuf[0] = '+'; | |
587 | ubuf[1] = '\0'; | |
588 | } | |
589 | ||
590 | if(IsCapable(client_p, CAP_EUID)) | |
591 | sendto_one(client_p, ":%s EUID %s %d %ld %s %s %s %s %s %s %s :%s", | |
592 | target_p->servptr->id, target_p->name, | |
593 | target_p->hopcount + 1, | |
594 | (long) target_p->tsinfo, ubuf, | |
595 | target_p->username, target_p->host, | |
596 | IsIPSpoof(target_p) ? "0" : target_p->sockhost, | |
597 | target_p->id, | |
598 | IsDynSpoof(target_p) ? target_p->orighost : "*", | |
599 | EmptyString(target_p->user->suser) ? "*" : target_p->user->suser, | |
600 | target_p->info); | |
601 | else | |
602 | sendto_one(client_p, ":%s UID %s %d %ld %s %s %s %s %s :%s", | |
603 | target_p->servptr->id, target_p->name, | |
604 | target_p->hopcount + 1, | |
605 | (long) target_p->tsinfo, ubuf, | |
606 | target_p->username, target_p->host, | |
607 | IsIPSpoof(target_p) ? "0" : target_p->sockhost, | |
608 | target_p->id, target_p->info); | |
609 | ||
610 | if(!EmptyString(target_p->certfp)) | |
611 | sendto_one(client_p, ":%s ENCAP * CERTFP :%s", | |
612 | use_id(target_p), target_p->certfp); | |
613 | ||
614 | if(!IsCapable(client_p, CAP_EUID)) | |
615 | { | |
616 | if(IsDynSpoof(target_p)) | |
617 | sendto_one(client_p, ":%s ENCAP * REALHOST %s", | |
618 | use_id(target_p), target_p->orighost); | |
619 | if(!EmptyString(target_p->user->suser)) | |
620 | sendto_one(client_p, ":%s ENCAP * LOGIN %s", | |
621 | use_id(target_p), target_p->user->suser); | |
622 | } | |
623 | ||
624 | if(ConfigFileEntry.burst_away && !EmptyString(target_p->user->away)) | |
625 | sendto_one(client_p, ":%s AWAY :%s", | |
626 | use_id(target_p), | |
627 | target_p->user->away); | |
628 | ||
629 | hclientinfo.target = target_p; | |
630 | call_hook(h_burst_client, &hclientinfo); | |
631 | } | |
632 | ||
633 | RB_DLINK_FOREACH(ptr, global_channel_list.head) | |
634 | { | |
635 | chptr = ptr->data; | |
636 | ||
637 | if(*chptr->chname != '#') | |
638 | continue; | |
639 | ||
640 | cur_len = mlen = sprintf(buf, ":%s SJOIN %ld %s %s :", me.id, | |
641 | (long) chptr->channelts, chptr->chname, | |
642 | channel_modes(chptr, client_p)); | |
643 | ||
644 | t = buf + mlen; | |
645 | ||
646 | RB_DLINK_FOREACH(uptr, chptr->members.head) | |
647 | { | |
648 | msptr = uptr->data; | |
649 | ||
650 | tlen = strlen(use_id(msptr->client_p)) + 1; | |
651 | if(is_chanop(msptr)) | |
652 | tlen++; | |
653 | if(is_voiced(msptr)) | |
654 | tlen++; | |
655 | ||
656 | if(cur_len + tlen >= BUFSIZE - 3) | |
657 | { | |
658 | *(t-1) = '\0'; | |
659 | sendto_one(client_p, "%s", buf); | |
660 | cur_len = mlen; | |
661 | t = buf + mlen; | |
662 | } | |
663 | ||
664 | sprintf(t, "%s%s ", find_channel_status(msptr, 1), | |
665 | use_id(msptr->client_p)); | |
666 | ||
667 | cur_len += tlen; | |
668 | t += tlen; | |
669 | } | |
670 | ||
671 | if (rb_dlink_list_length(&chptr->members) > 0) | |
672 | { | |
673 | /* remove trailing space */ | |
674 | *(t-1) = '\0'; | |
675 | } | |
676 | sendto_one(client_p, "%s", buf); | |
677 | ||
678 | if(rb_dlink_list_length(&chptr->banlist) > 0) | |
679 | burst_modes_TS6(client_p, chptr, &chptr->banlist, 'b'); | |
680 | ||
681 | if(IsCapable(client_p, CAP_EX) && | |
682 | rb_dlink_list_length(&chptr->exceptlist) > 0) | |
683 | burst_modes_TS6(client_p, chptr, &chptr->exceptlist, 'e'); | |
684 | ||
685 | if(IsCapable(client_p, CAP_IE) && | |
686 | rb_dlink_list_length(&chptr->invexlist) > 0) | |
687 | burst_modes_TS6(client_p, chptr, &chptr->invexlist, 'I'); | |
688 | ||
689 | if(rb_dlink_list_length(&chptr->quietlist) > 0) | |
690 | burst_modes_TS6(client_p, chptr, &chptr->quietlist, 'q'); | |
691 | ||
692 | if(IsCapable(client_p, CAP_TB) && chptr->topic != NULL) | |
693 | sendto_one(client_p, ":%s TB %s %ld %s%s:%s", | |
694 | me.id, chptr->chname, (long) chptr->topic_time, | |
695 | ConfigChannel.burst_topicwho ? chptr->topic_info : "", | |
696 | ConfigChannel.burst_topicwho ? " " : "", | |
697 | chptr->topic); | |
698 | ||
699 | if(IsCapable(client_p, CAP_MLOCK)) | |
700 | sendto_one(client_p, ":%s MLOCK %ld %s :%s", | |
701 | me.id, (long) chptr->channelts, chptr->chname, | |
702 | EmptyString(chptr->mode_lock) ? "" : chptr->mode_lock); | |
703 | ||
704 | hchaninfo.chptr = chptr; | |
705 | call_hook(h_burst_channel, &hchaninfo); | |
706 | } | |
707 | ||
708 | hclientinfo.target = NULL; | |
709 | call_hook(h_burst_finished, &hclientinfo); | |
710 | } | |
711 | ||
712 | /* | |
713 | * show_capabilities - show current server capabilities | |
714 | * | |
715 | * inputs - pointer to an struct Client | |
716 | * output - pointer to static string | |
717 | * side effects - build up string representing capabilities of server listed | |
718 | */ | |
719 | const char * | |
720 | show_capabilities(struct Client *target_p) | |
721 | { | |
722 | static char msgbuf[BUFSIZE]; | |
723 | ||
724 | *msgbuf = '\0'; | |
725 | ||
726 | if(has_id(target_p)) | |
727 | rb_strlcpy(msgbuf, " TS6", sizeof(msgbuf)); | |
728 | ||
729 | if(IsSSL(target_p)) | |
730 | rb_strlcat(msgbuf, " SSL", sizeof(msgbuf)); | |
731 | ||
732 | if(!IsServer(target_p) || !target_p->serv->caps) /* short circuit if no caps */ | |
733 | return msgbuf + 1; | |
734 | ||
735 | rb_strlcat(msgbuf, " ", sizeof(msgbuf)); | |
736 | rb_strlcat(msgbuf, capability_index_list(serv_capindex, target_p->serv->caps), sizeof(msgbuf)); | |
737 | ||
738 | return msgbuf + 1; | |
739 | } | |
740 | ||
741 | /* | |
742 | * server_estab | |
743 | * | |
744 | * inputs - pointer to a struct Client | |
745 | * output - | |
746 | * side effects - | |
747 | */ | |
748 | int | |
749 | server_estab(struct Client *client_p) | |
750 | { | |
751 | struct Client *target_p; | |
752 | struct server_conf *server_p; | |
753 | hook_data_client hdata; | |
754 | char *host; | |
755 | rb_dlink_node *ptr; | |
756 | char note[HOSTLEN + 15]; | |
757 | ||
758 | s_assert(NULL != client_p); | |
759 | if(client_p == NULL) | |
760 | return -1; | |
761 | ||
762 | host = client_p->name; | |
763 | ||
764 | if((server_p = client_p->localClient->att_sconf) == NULL) | |
765 | { | |
766 | /* This shouldn't happen, better tell the ops... -A1kmm */ | |
767 | sendto_realops_snomask(SNO_GENERAL, is_remote_connect(client_p) ? L_NETWIDE : L_ALL, | |
768 | "Warning: Lost connect{} block for server %s!", host); | |
769 | return exit_client(client_p, client_p, client_p, "Lost connect{} block!"); | |
770 | } | |
771 | ||
772 | /* We shouldn't have to check this, it should already done before | |
773 | * server_estab is called. -A1kmm | |
774 | */ | |
775 | if(client_p->localClient->passwd) | |
776 | { | |
777 | memset(client_p->localClient->passwd, 0, strlen(client_p->localClient->passwd)); | |
778 | rb_free(client_p->localClient->passwd); | |
779 | client_p->localClient->passwd = NULL; | |
780 | } | |
781 | ||
782 | /* Its got identd , since its a server */ | |
783 | SetGotId(client_p); | |
784 | ||
785 | /* If there is something in the serv_list, it might be this | |
786 | * connecting server.. | |
787 | */ | |
788 | if(!ServerInfo.hub && serv_list.head) | |
789 | { | |
790 | if(client_p != serv_list.head->data || serv_list.head->next) | |
791 | { | |
792 | ServerStats.is_ref++; | |
793 | sendto_one(client_p, "ERROR :I'm a leaf not a hub"); | |
794 | return exit_client(client_p, client_p, client_p, "I'm a leaf"); | |
795 | } | |
796 | } | |
797 | ||
798 | if(IsUnknown(client_p)) | |
799 | { | |
800 | /* the server may be linking based on certificate fingerprint now. --nenolod */ | |
801 | sendto_one(client_p, "PASS %s TS %d :%s", | |
802 | EmptyString(server_p->spasswd) ? "*" : server_p->spasswd, TS_CURRENT, me.id); | |
803 | ||
804 | /* pass info to new server */ | |
805 | send_capabilities(client_p, default_server_capabs | |
806 | | (ServerConfCompressed(server_p) ? CAP_ZIP_SUPPORTED : 0) | |
807 | | (ServerConfTb(server_p) ? CAP_TB : 0)); | |
808 | ||
809 | sendto_one(client_p, "SERVER %s 1 :%s%s", | |
810 | me.name, | |
811 | ConfigServerHide.hidden ? "(H) " : "", | |
812 | (me.info[0]) ? (me.info) : "IRCers United"); | |
813 | } | |
814 | ||
815 | if(!rb_set_buffers(client_p->localClient->F, READBUF_SIZE)) | |
816 | ilog_error("rb_set_buffers failed for server"); | |
817 | ||
818 | /* Enable compression now */ | |
819 | if(IsCapable(client_p, CAP_ZIP)) | |
820 | { | |
821 | start_zlib_session(client_p); | |
822 | } | |
823 | sendto_one(client_p, "SVINFO %d %d 0 :%ld", TS_CURRENT, TS_MIN, (long int)rb_current_time()); | |
824 | ||
825 | client_p->servptr = &me; | |
826 | ||
827 | if(IsAnyDead(client_p)) | |
828 | return CLIENT_EXITED; | |
829 | ||
830 | SetServer(client_p); | |
831 | ||
832 | rb_dlinkAdd(client_p, &client_p->lnode, &me.serv->servers); | |
833 | rb_dlinkMoveNode(&client_p->localClient->tnode, &unknown_list, &serv_list); | |
834 | rb_dlinkAddTailAlloc(client_p, &global_serv_list); | |
835 | ||
836 | if(has_id(client_p)) | |
837 | add_to_id_hash(client_p->id, client_p); | |
838 | ||
839 | add_to_client_hash(client_p->name, client_p); | |
840 | /* doesnt duplicate client_p->serv if allocated this struct already */ | |
841 | make_server(client_p); | |
842 | ||
843 | client_p->serv->caps = client_p->localClient->caps; | |
844 | ||
845 | if(client_p->localClient->fullcaps) | |
846 | { | |
847 | client_p->serv->fullcaps = rb_strdup(client_p->localClient->fullcaps); | |
848 | rb_free(client_p->localClient->fullcaps); | |
849 | client_p->localClient->fullcaps = NULL; | |
850 | } | |
851 | ||
852 | client_p->serv->nameinfo = scache_connect(client_p->name, client_p->info, IsHidden(client_p)); | |
853 | client_p->localClient->firsttime = rb_current_time(); | |
854 | /* fixing eob timings.. -gnp */ | |
855 | ||
856 | if((rb_dlink_list_length(&lclient_list) + rb_dlink_list_length(&serv_list)) > | |
857 | (unsigned long)MaxConnectionCount) | |
858 | MaxConnectionCount = rb_dlink_list_length(&lclient_list) + | |
859 | rb_dlink_list_length(&serv_list); | |
860 | ||
861 | /* Show the real host/IP to admins */ | |
862 | sendto_realops_snomask(SNO_GENERAL, L_ALL, | |
863 | "Link with %s established: (%s) link", | |
864 | client_p->name, | |
865 | show_capabilities(client_p)); | |
866 | ||
867 | ilog(L_SERVER, "Link with %s established: (%s) link", | |
868 | log_client_name(client_p, SHOW_IP), show_capabilities(client_p)); | |
869 | ||
870 | hdata.client = &me; | |
871 | hdata.target = client_p; | |
872 | call_hook(h_server_introduced, &hdata); | |
873 | ||
874 | snprintf(note, sizeof(note), "Server: %s", client_p->name); | |
875 | rb_note(client_p->localClient->F, note); | |
876 | ||
877 | /* | |
878 | ** Old sendto_serv_but_one() call removed because we now | |
879 | ** need to send different names to different servers | |
880 | ** (domain name matching) Send new server to other servers. | |
881 | */ | |
882 | RB_DLINK_FOREACH(ptr, serv_list.head) | |
883 | { | |
884 | target_p = ptr->data; | |
885 | ||
886 | if(target_p == client_p) | |
887 | continue; | |
888 | ||
889 | if(has_id(target_p) && has_id(client_p)) | |
890 | { | |
891 | sendto_one(target_p, ":%s SID %s 2 %s :%s%s", | |
892 | me.id, client_p->name, client_p->id, | |
893 | IsHidden(client_p) ? "(H) " : "", client_p->info); | |
894 | ||
895 | if(!EmptyString(client_p->serv->fullcaps)) | |
896 | sendto_one(target_p, ":%s ENCAP * GCAP :%s", | |
897 | client_p->id, client_p->serv->fullcaps); | |
898 | } | |
899 | else | |
900 | { | |
901 | sendto_one(target_p, ":%s SERVER %s 2 :%s%s", | |
902 | me.name, client_p->name, | |
903 | IsHidden(client_p) ? "(H) " : "", client_p->info); | |
904 | ||
905 | if(!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(!EmptyString(target_p->serv->fullcaps)) | |
950 | sendto_one(client_p, ":%s ENCAP * GCAP :%s", | |
951 | get_id(target_p, client_p), | |
952 | target_p->serv->fullcaps); | |
953 | } | |
954 | ||
955 | if(IsCapable(client_p, CAP_BAN)) | |
956 | burst_ban(client_p); | |
957 | ||
958 | burst_TS6(client_p); | |
959 | ||
960 | /* Always send a PING after connect burst is done */ | |
961 | sendto_one(client_p, "PING :%s", get_id(&me, client_p)); | |
962 | ||
963 | free_pre_client(client_p); | |
964 | ||
965 | send_pop_queue(client_p); | |
966 | ||
967 | return 0; | |
968 | } | |
969 | ||
970 | /* | |
971 | * New server connection code | |
972 | * Based upon the stuff floating about in s_bsd.c | |
973 | * -- adrian | |
974 | */ | |
975 | ||
976 | /* | |
977 | * serv_connect() - initiate a server connection | |
978 | * | |
979 | * inputs - pointer to conf | |
980 | * - pointer to client doing the connet | |
981 | * output - | |
982 | * side effects - | |
983 | * | |
984 | * This code initiates a connection to a server. It first checks to make | |
985 | * sure the given server exists. If this is the case, it creates a socket, | |
986 | * creates a client, saves the socket information in the client, and | |
987 | * initiates a connection to the server through rb_connect_tcp(). The | |
988 | * completion of this goes through serv_completed_connection(). | |
989 | * | |
990 | * We return 1 if the connection is attempted, since we don't know whether | |
991 | * it suceeded or not, and 0 if it fails in here somewhere. | |
992 | */ | |
993 | int | |
994 | serv_connect(struct server_conf *server_p, struct Client *by) | |
995 | { | |
996 | struct Client *client_p; | |
997 | struct rb_sockaddr_storage myipnum; | |
998 | char note[HOSTLEN + 10]; | |
999 | rb_fde_t *F; | |
1000 | ||
1001 | s_assert(server_p != NULL); | |
1002 | if(server_p == NULL) | |
1003 | return 0; | |
1004 | ||
1005 | /* log */ | |
1006 | rb_inet_ntop_sock((struct sockaddr *)&server_p->my_ipnum, buf, sizeof(buf)); | |
1007 | ilog(L_SERVER, "Connect to *[%s] @%s", server_p->name, buf); | |
1008 | ||
1009 | /* | |
1010 | * Make sure this server isn't already connected | |
1011 | */ | |
1012 | if((client_p = find_server(NULL, server_p->name))) | |
1013 | { | |
1014 | sendto_realops_snomask(SNO_GENERAL, L_ALL, | |
1015 | "Server %s already present from %s", | |
1016 | server_p->name, client_p->name); | |
1017 | if(by && IsPerson(by) && !MyClient(by)) | |
1018 | sendto_one_notice(by, ":Server %s already present from %s", | |
1019 | server_p->name, client_p->name); | |
1020 | return 0; | |
1021 | } | |
1022 | ||
1023 | /* create a socket for the server connection */ | |
1024 | if((F = rb_socket(GET_SS_FAMILY(&server_p->my_ipnum), SOCK_STREAM, 0, NULL)) == NULL) | |
1025 | { | |
1026 | ilog_error("opening a stream socket"); | |
1027 | return 0; | |
1028 | } | |
1029 | ||
1030 | /* servernames are always guaranteed under HOSTLEN chars */ | |
1031 | snprintf(note, sizeof(note), "Server: %s", server_p->name); | |
1032 | rb_note(F, note); | |
1033 | ||
1034 | /* Create a local client */ | |
1035 | client_p = make_client(NULL); | |
1036 | ||
1037 | /* Copy in the server, hostname, fd */ | |
1038 | rb_strlcpy(client_p->name, server_p->name, sizeof(client_p->name)); | |
1039 | rb_strlcpy(client_p->host, server_p->host, sizeof(client_p->host)); | |
1040 | rb_strlcpy(client_p->sockhost, buf, sizeof(client_p->sockhost)); | |
1041 | client_p->localClient->F = F; | |
1042 | add_to_cli_connid_hash(client_p); | |
1043 | /* shove the port number into the sockaddr */ | |
1044 | #ifdef RB_IPV6 | |
1045 | if(GET_SS_FAMILY(&server_p->my_ipnum) == AF_INET6) | |
1046 | ((struct sockaddr_in6 *)&server_p->my_ipnum)->sin6_port = htons(server_p->port); | |
1047 | else | |
1048 | #endif | |
1049 | ((struct sockaddr_in *)&server_p->my_ipnum)->sin_port = htons(server_p->port); | |
1050 | ||
1051 | /* | |
1052 | * Set up the initial server evilness, ripped straight from | |
1053 | * connect_server(), so don't blame me for it being evil. | |
1054 | * -- adrian | |
1055 | */ | |
1056 | ||
1057 | if(!rb_set_buffers(client_p->localClient->F, READBUF_SIZE)) | |
1058 | { | |
1059 | ilog_error("setting the buffer size for a server connection"); | |
1060 | } | |
1061 | ||
1062 | /* | |
1063 | * Attach config entries to client here rather than in | |
1064 | * serv_connect_callback(). This to avoid null pointer references. | |
1065 | */ | |
1066 | attach_server_conf(client_p, server_p); | |
1067 | ||
1068 | /* | |
1069 | * at this point we have a connection in progress and C/N lines | |
1070 | * attached to the client, the socket info should be saved in the | |
1071 | * client and it should either be resolved or have a valid address. | |
1072 | * | |
1073 | * The socket has been connected or connect is in progress. | |
1074 | */ | |
1075 | make_server(client_p); | |
1076 | if(by && IsClient(by)) | |
1077 | strcpy(client_p->serv->by, by->name); | |
1078 | else | |
1079 | strcpy(client_p->serv->by, "AutoConn."); | |
1080 | ||
1081 | SetConnecting(client_p); | |
1082 | rb_dlinkAddTail(client_p, &client_p->node, &global_client_list); | |
1083 | ||
1084 | if(ServerConfVhosted(server_p)) | |
1085 | { | |
1086 | memcpy(&myipnum, &server_p->my_ipnum, sizeof(myipnum)); | |
1087 | ((struct sockaddr_in *)&myipnum)->sin_port = 0; | |
1088 | SET_SS_FAMILY(&myipnum, GET_SS_FAMILY(&server_p->my_ipnum)); | |
1089 | ||
1090 | } | |
1091 | else if(GET_SS_FAMILY(&server_p->my_ipnum) == AF_INET && ServerInfo.specific_ipv4_vhost) | |
1092 | { | |
1093 | memcpy(&myipnum, &ServerInfo.ip, sizeof(myipnum)); | |
1094 | ((struct sockaddr_in *)&myipnum)->sin_port = 0; | |
1095 | SET_SS_FAMILY(&myipnum, AF_INET); | |
1096 | SET_SS_LEN(&myipnum, sizeof(struct sockaddr_in)); | |
1097 | } | |
1098 | ||
1099 | #ifdef RB_IPV6 | |
1100 | else if((GET_SS_FAMILY(&server_p->my_ipnum) == AF_INET6) && ServerInfo.specific_ipv6_vhost) | |
1101 | { | |
1102 | memcpy(&myipnum, &ServerInfo.ip6, sizeof(myipnum)); | |
1103 | ((struct sockaddr_in6 *)&myipnum)->sin6_port = 0; | |
1104 | SET_SS_FAMILY(&myipnum, AF_INET6); | |
1105 | SET_SS_LEN(&myipnum, sizeof(struct sockaddr_in6)); | |
1106 | } | |
1107 | #endif | |
1108 | else | |
1109 | { | |
1110 | if(ServerConfSSL(server_p)) | |
1111 | { | |
1112 | rb_connect_tcp(client_p->localClient->F, | |
1113 | (struct sockaddr *)&server_p->my_ipnum, NULL, 0, | |
1114 | serv_connect_ssl_callback, client_p, | |
1115 | ConfigFileEntry.connect_timeout); | |
1116 | } | |
1117 | else | |
1118 | rb_connect_tcp(client_p->localClient->F, | |
1119 | (struct sockaddr *)&server_p->my_ipnum, NULL, 0, | |
1120 | serv_connect_callback, client_p, | |
1121 | ConfigFileEntry.connect_timeout); | |
1122 | ||
1123 | return 1; | |
1124 | } | |
1125 | if(ServerConfSSL(server_p)) | |
1126 | rb_connect_tcp(client_p->localClient->F, (struct sockaddr *)&server_p->my_ipnum, | |
1127 | (struct sockaddr *)&myipnum, | |
1128 | GET_SS_LEN(&myipnum), serv_connect_ssl_callback, client_p, | |
1129 | ConfigFileEntry.connect_timeout); | |
1130 | else | |
1131 | rb_connect_tcp(client_p->localClient->F, (struct sockaddr *)&server_p->my_ipnum, | |
1132 | (struct sockaddr *)&myipnum, | |
1133 | GET_SS_LEN(&myipnum), serv_connect_callback, client_p, | |
1134 | ConfigFileEntry.connect_timeout); | |
1135 | ||
1136 | return 1; | |
1137 | } | |
1138 | ||
1139 | static void | |
1140 | serv_connect_ssl_callback(rb_fde_t *F, int status, void *data) | |
1141 | { | |
1142 | struct Client *client_p = data; | |
1143 | rb_fde_t *xF[2]; | |
1144 | rb_connect_sockaddr(F, (struct sockaddr *)&client_p->localClient->ip, sizeof(client_p->localClient->ip)); | |
1145 | if(status != RB_OK) | |
1146 | { | |
1147 | /* Print error message, just like non-SSL. */ | |
1148 | serv_connect_callback(F, status, data); | |
1149 | return; | |
1150 | } | |
1151 | if(rb_socketpair(AF_UNIX, SOCK_STREAM, 0, &xF[0], &xF[1], "Outgoing ssld connection") == -1) | |
1152 | { | |
1153 | ilog_error("rb_socketpair failed for server"); | |
1154 | serv_connect_callback(F, RB_ERROR, data); | |
1155 | return; | |
1156 | ||
1157 | } | |
1158 | del_from_cli_connid_hash(client_p); | |
1159 | client_p->localClient->F = xF[0]; | |
1160 | add_to_cli_connid_hash(client_p); | |
1161 | ||
1162 | client_p->localClient->ssl_ctl = start_ssld_connect(F, xF[1], rb_get_fd(xF[0])); | |
1163 | if(!client_p->localClient->ssl_ctl) | |
1164 | { | |
1165 | serv_connect_callback(client_p->localClient->F, RB_ERROR, data); | |
1166 | return; | |
1167 | } | |
1168 | SetSSL(client_p); | |
1169 | serv_connect_callback(client_p->localClient->F, RB_OK, client_p); | |
1170 | } | |
1171 | ||
1172 | /* | |
1173 | * serv_connect_callback() - complete a server connection. | |
1174 | * | |
1175 | * This routine is called after the server connection attempt has | |
1176 | * completed. If unsucessful, an error is sent to ops and the client | |
1177 | * is closed. If sucessful, it goes through the initialisation/check | |
1178 | * procedures, the capabilities are sent, and the socket is then | |
1179 | * marked for reading. | |
1180 | */ | |
1181 | static void | |
1182 | serv_connect_callback(rb_fde_t *F, int status, void *data) | |
1183 | { | |
1184 | struct Client *client_p = data; | |
1185 | struct server_conf *server_p; | |
1186 | char *errstr; | |
1187 | ||
1188 | /* First, make sure its a real client! */ | |
1189 | s_assert(client_p != NULL); | |
1190 | s_assert(client_p->localClient->F == F); | |
1191 | ||
1192 | if(client_p == NULL) | |
1193 | return; | |
1194 | ||
1195 | /* while we were waiting for the callback, its possible this already | |
1196 | * linked in.. --fl | |
1197 | */ | |
1198 | if(find_server(NULL, client_p->name) != NULL) | |
1199 | { | |
1200 | exit_client(client_p, client_p, &me, "Server Exists"); | |
1201 | return; | |
1202 | } | |
1203 | ||
1204 | if(client_p->localClient->ssl_ctl == NULL) | |
1205 | rb_connect_sockaddr(F, (struct sockaddr *)&client_p->localClient->ip, sizeof(client_p->localClient->ip)); | |
1206 | ||
1207 | /* Check the status */ | |
1208 | if(status != RB_OK) | |
1209 | { | |
1210 | /* COMM_ERR_TIMEOUT wont have an errno associated with it, | |
1211 | * the others will.. --fl | |
1212 | */ | |
1213 | if(status == RB_ERR_TIMEOUT) | |
1214 | { | |
1215 | sendto_realops_snomask(SNO_GENERAL, is_remote_connect(client_p) ? L_NETWIDE : L_ALL, | |
1216 | "Error connecting to %s[%s]: %s", | |
1217 | client_p->name, | |
1218 | "255.255.255.255", | |
1219 | rb_errstr(status)); | |
1220 | ilog(L_SERVER, "Error connecting to %s[%s]: %s", | |
1221 | client_p->name, client_p->sockhost, | |
1222 | rb_errstr(status)); | |
1223 | } | |
1224 | else | |
1225 | { | |
1226 | errstr = strerror(rb_get_sockerr(F)); | |
1227 | sendto_realops_snomask(SNO_GENERAL, is_remote_connect(client_p) ? L_NETWIDE : L_ALL, | |
1228 | "Error connecting to %s[%s]: %s (%s)", | |
1229 | client_p->name, | |
1230 | "255.255.255.255", | |
1231 | rb_errstr(status), errstr); | |
1232 | ilog(L_SERVER, "Error connecting to %s[%s]: %s (%s)", | |
1233 | client_p->name, client_p->sockhost, | |
1234 | rb_errstr(status), errstr); | |
1235 | } | |
1236 | ||
1237 | exit_client(client_p, client_p, &me, rb_errstr(status)); | |
1238 | return; | |
1239 | } | |
1240 | ||
1241 | /* COMM_OK, so continue the connection procedure */ | |
1242 | /* Get the C/N lines */ | |
1243 | if((server_p = client_p->localClient->att_sconf) == NULL) | |
1244 | { | |
1245 | sendto_realops_snomask(SNO_GENERAL, is_remote_connect(client_p) ? L_NETWIDE : L_ALL, "Lost connect{} block for %s", | |
1246 | client_p->name); | |
1247 | exit_client(client_p, client_p, &me, "Lost connect{} block"); | |
1248 | return; | |
1249 | } | |
1250 | ||
1251 | /* Next, send the initial handshake */ | |
1252 | SetHandshake(client_p); | |
1253 | ||
1254 | /* the server may be linking based on certificate fingerprint now. --nenolod */ | |
1255 | sendto_one(client_p, "PASS %s TS %d :%s", | |
1256 | EmptyString(server_p->spasswd) ? "*" : server_p->spasswd, TS_CURRENT, me.id); | |
1257 | ||
1258 | /* pass my info to the new server */ | |
1259 | send_capabilities(client_p, default_server_capabs | |
1260 | | (ServerConfCompressed(server_p) ? CAP_ZIP_SUPPORTED : 0) | |
1261 | | (ServerConfTb(server_p) ? CAP_TB : 0)); | |
1262 | ||
1263 | sendto_one(client_p, "SERVER %s 1 :%s%s", | |
1264 | me.name, | |
1265 | ConfigServerHide.hidden ? "(H) " : "", me.info); | |
1266 | ||
1267 | /* | |
1268 | * If we've been marked dead because a send failed, just exit | |
1269 | * here now and save everyone the trouble of us ever existing. | |
1270 | */ | |
1271 | if(IsAnyDead(client_p)) | |
1272 | { | |
1273 | sendto_realops_snomask(SNO_GENERAL, is_remote_connect(client_p) ? L_NETWIDE : L_ALL, | |
1274 | "%s went dead during handshake", client_p->name); | |
1275 | exit_client(client_p, client_p, &me, "Went dead during handshake"); | |
1276 | return; | |
1277 | } | |
1278 | ||
1279 | /* don't move to serv_list yet -- we haven't sent a burst! */ | |
1280 | ||
1281 | /* If we get here, we're ok, so lets start reading some data */ | |
1282 | read_packet(F, client_p); | |
1283 | } |