]>
Commit | Line | Data |
---|---|---|
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 | #include "stdinc.h" | |
26 | ||
27 | #ifdef HAVE_LIBCRYPTO | |
28 | #include <openssl/rsa.h> | |
29 | #endif | |
30 | ||
31 | #include "s_serv.h" | |
32 | #include "class.h" | |
33 | #include "client.h" | |
34 | #include "common.h" | |
35 | #include "hash.h" | |
36 | #include "match.h" | |
37 | #include "ircd.h" | |
38 | #include "ircd_defs.h" | |
39 | #include "numeric.h" | |
40 | #include "packet.h" | |
41 | #include "s_conf.h" | |
42 | #include "s_newconf.h" | |
43 | #include "logger.h" | |
44 | #include "s_stats.h" | |
45 | #include "s_user.h" | |
46 | #include "scache.h" | |
47 | #include "send.h" | |
48 | #include "client.h" | |
49 | #include "channel.h" /* chcap_usage_counts stuff... */ | |
50 | #include "hook.h" | |
51 | #include "msg.h" | |
52 | #include "reject.h" | |
53 | #include "sslproc.h" | |
54 | #include "capability.h" | |
55 | #include "s_assert.h" | |
56 | ||
57 | #ifndef INADDR_NONE | |
58 | #define INADDR_NONE ((unsigned int) 0xffffffff) | |
59 | #endif | |
60 | ||
61 | int MaxConnectionCount = 1; | |
62 | int MaxClientCount = 1; | |
63 | int refresh_user_links = 0; | |
64 | ||
65 | static char buf[BUFSIZE]; | |
66 | ||
67 | /* | |
68 | * list of recognized server capabilities. "TS" is not on the list | |
69 | * because all servers that we talk to already do TS, and the kludged | |
70 | * extra argument to "PASS" takes care of checking that. -orabidoo | |
71 | */ | |
72 | struct CapabilityIndex *serv_capindex = NULL; | |
73 | struct CapabilityIndex *cli_capindex = NULL; | |
74 | ||
75 | unsigned int CAP_CAP; | |
76 | unsigned int CAP_QS; | |
77 | unsigned int CAP_EX; | |
78 | unsigned int CAP_CHW; | |
79 | unsigned int CAP_IE; | |
80 | unsigned int CAP_KLN; | |
81 | unsigned int CAP_ZIP; | |
82 | unsigned int CAP_KNOCK; | |
83 | unsigned int CAP_TB; | |
84 | unsigned int CAP_UNKLN; | |
85 | unsigned int CAP_CLUSTER; | |
86 | unsigned int CAP_ENCAP; | |
87 | unsigned int CAP_TS6; | |
88 | unsigned int CAP_SERVICE; | |
89 | unsigned int CAP_RSFNC; | |
90 | unsigned int CAP_SAVE; | |
91 | unsigned int CAP_EUID; | |
92 | unsigned int CAP_EOPMOD; | |
93 | unsigned int CAP_BAN; | |
94 | unsigned int CAP_MLOCK; | |
95 | ||
96 | unsigned int CLICAP_MULTI_PREFIX; | |
97 | unsigned int CLICAP_ACCOUNT_NOTIFY; | |
98 | unsigned int CLICAP_EXTENDED_JOIN; | |
99 | unsigned int CLICAP_AWAY_NOTIFY; | |
100 | unsigned int CLICAP_USERHOST_IN_NAMES; | |
101 | unsigned int CLICAP_CAP_NOTIFY; | |
102 | unsigned int CLICAP_CHGHOST; | |
103 | unsigned int CLICAP_ECHO_MESSAGE; | |
104 | ||
105 | /* | |
106 | * initialize our builtin capability table. --nenolod | |
107 | */ | |
108 | void | |
109 | init_builtin_capabs(void) | |
110 | { | |
111 | serv_capindex = capability_index_create("server capabilities"); | |
112 | ||
113 | /* These two are not set via CAPAB/GCAP keywords. */ | |
114 | CAP_CAP = capability_put_anonymous(serv_capindex); | |
115 | CAP_TS6 = capability_put_anonymous(serv_capindex); | |
116 | ||
117 | CAP_QS = capability_put(serv_capindex, "QS", NULL); | |
118 | CAP_EX = capability_put(serv_capindex, "EX", NULL); | |
119 | CAP_CHW = capability_put(serv_capindex, "CHW", NULL); | |
120 | CAP_IE = capability_put(serv_capindex, "IE", NULL); | |
121 | CAP_KLN = capability_put(serv_capindex, "KLN", NULL); | |
122 | CAP_KNOCK = capability_put(serv_capindex, "KNOCK", NULL); | |
123 | CAP_ZIP = capability_put(serv_capindex, "ZIP", NULL); | |
124 | CAP_TB = capability_put(serv_capindex, "TB", NULL); | |
125 | CAP_UNKLN = capability_put(serv_capindex, "UNKLN", NULL); | |
126 | CAP_CLUSTER = capability_put(serv_capindex, "CLUSTER", NULL); | |
127 | CAP_ENCAP = capability_put(serv_capindex, "ENCAP", NULL); | |
128 | CAP_SERVICE = capability_put(serv_capindex, "SERVICES", NULL); | |
129 | CAP_RSFNC = capability_put(serv_capindex, "RSFNC", NULL); | |
130 | CAP_SAVE = capability_put(serv_capindex, "SAVE", NULL); | |
131 | CAP_EUID = capability_put(serv_capindex, "EUID", NULL); | |
132 | CAP_EOPMOD = capability_put(serv_capindex, "EOPMOD", NULL); | |
133 | CAP_BAN = capability_put(serv_capindex, "BAN", NULL); | |
134 | CAP_MLOCK = capability_put(serv_capindex, "MLOCK", NULL); | |
135 | ||
136 | capability_require(serv_capindex, "QS"); | |
137 | capability_require(serv_capindex, "EX"); | |
138 | capability_require(serv_capindex, "IE"); | |
139 | capability_require(serv_capindex, "ENCAP"); | |
140 | ||
141 | cli_capindex = capability_index_create("client capabilities"); | |
142 | ||
143 | CLICAP_MULTI_PREFIX = capability_put(cli_capindex, "multi-prefix", NULL); | |
144 | CLICAP_ACCOUNT_NOTIFY = capability_put(cli_capindex, "account-notify", NULL); | |
145 | CLICAP_EXTENDED_JOIN = capability_put(cli_capindex, "extended-join", NULL); | |
146 | CLICAP_AWAY_NOTIFY = capability_put(cli_capindex, "away-notify", NULL); | |
147 | CLICAP_USERHOST_IN_NAMES = capability_put(cli_capindex, "userhost-in-names", NULL); | |
148 | CLICAP_CAP_NOTIFY = capability_put(cli_capindex, "cap-notify", NULL); | |
149 | CLICAP_CHGHOST = capability_put(cli_capindex, "chghost", NULL); | |
150 | CLICAP_ECHO_MESSAGE = capability_put(cli_capindex, "echo-message", NULL); | |
151 | } | |
152 | ||
153 | static CNCB serv_connect_callback; | |
154 | static CNCB serv_connect_ssl_callback; | |
155 | ||
156 | /* | |
157 | * hunt_server - Do the basic thing in delivering the message (command) | |
158 | * across the relays to the specific server (server) for | |
159 | * actions. | |
160 | * | |
161 | * Note: The command is a format string and *MUST* be | |
162 | * of prefixed style (e.g. ":%s COMMAND %s ..."). | |
163 | * Command can have only max 8 parameters. | |
164 | * | |
165 | * server parv[server] is the parameter identifying the | |
166 | * target server. | |
167 | * | |
168 | * *WARNING* | |
169 | * parv[server] is replaced with the pointer to the | |
170 | * real servername from the matched client (I'm lazy | |
171 | * now --msa). | |
172 | * | |
173 | * returns: (see #defines) | |
174 | */ | |
175 | int | |
176 | hunt_server(struct Client *client_p, struct Client *source_p, | |
177 | const char *command, int server, int parc, const char *parv[]) | |
178 | { | |
179 | struct Client *target_p; | |
180 | int wilds; | |
181 | rb_dlink_node *ptr; | |
182 | const char *old; | |
183 | char *new; | |
184 | ||
185 | /* | |
186 | * Assume it's me, if no server | |
187 | */ | |
188 | if(parc <= server || EmptyString(parv[server]) || | |
189 | match(parv[server], me.name) || (strcmp(parv[server], me.id) == 0)) | |
190 | return (HUNTED_ISME); | |
191 | ||
192 | new = LOCAL_COPY(parv[server]); | |
193 | ||
194 | /* | |
195 | * These are to pickup matches that would cause the following | |
196 | * message to go in the wrong direction while doing quick fast | |
197 | * non-matching lookups. | |
198 | */ | |
199 | if(MyClient(source_p)) | |
200 | target_p = find_named_client(new); | |
201 | else | |
202 | target_p = find_client(new); | |
203 | ||
204 | if(target_p) | |
205 | if(target_p->from == source_p->from && !MyConnect(target_p)) | |
206 | target_p = NULL; | |
207 | ||
208 | collapse(new); | |
209 | wilds = (strchr(new, '?') || strchr(new, '*')); | |
210 | ||
211 | /* | |
212 | * Again, if there are no wild cards involved in the server | |
213 | * name, use the hash lookup | |
214 | */ | |
215 | if(!target_p && wilds) | |
216 | { | |
217 | RB_DLINK_FOREACH(ptr, global_serv_list.head) | |
218 | { | |
219 | if(match(new, ((struct Client *) (ptr->data))->name)) | |
220 | { | |
221 | target_p = ptr->data; | |
222 | break; | |
223 | } | |
224 | } | |
225 | } | |
226 | ||
227 | if(target_p && !IsRegistered(target_p)) | |
228 | target_p = NULL; | |
229 | ||
230 | if(target_p) | |
231 | { | |
232 | if(IsMe(target_p) || MyClient(target_p)) | |
233 | return HUNTED_ISME; | |
234 | ||
235 | old = parv[server]; | |
236 | parv[server] = get_id(target_p, target_p); | |
237 | ||
238 | sendto_one(target_p, command, get_id(source_p, target_p), | |
239 | parv[1], parv[2], parv[3], parv[4], parv[5], parv[6], parv[7], parv[8]); | |
240 | parv[server] = old; | |
241 | return (HUNTED_PASS); | |
242 | } | |
243 | ||
244 | if(MyClient(source_p) || !IsDigit(parv[server][0])) | |
245 | sendto_one_numeric(source_p, ERR_NOSUCHSERVER, | |
246 | form_str(ERR_NOSUCHSERVER), parv[server]); | |
247 | return (HUNTED_NOSUCH); | |
248 | } | |
249 | ||
250 | /* | |
251 | * try_connections - scan through configuration and try new connections. | |
252 | * Returns the calendar time when the next call to this | |
253 | * function should be made latest. (No harm done if this | |
254 | * is called earlier or later...) | |
255 | */ | |
256 | void | |
257 | try_connections(void *unused) | |
258 | { | |
259 | struct Client *client_p; | |
260 | struct server_conf *server_p = NULL; | |
261 | struct server_conf *tmp_p; | |
262 | struct Class *cltmp; | |
263 | rb_dlink_node *ptr; | |
264 | bool connecting = false; | |
265 | int confrq = 0; | |
266 | time_t next = 0; | |
267 | ||
268 | RB_DLINK_FOREACH(ptr, server_conf_list.head) | |
269 | { | |
270 | tmp_p = ptr->data; | |
271 | ||
272 | if(ServerConfIllegal(tmp_p) || !ServerConfAutoconn(tmp_p)) | |
273 | continue; | |
274 | ||
275 | /* don't allow ssl connections if ssl isn't setup */ | |
276 | if(ServerConfSSL(tmp_p) && (!ircd_ssl_ok || !get_ssld_count())) | |
277 | continue; | |
278 | ||
279 | cltmp = tmp_p->class; | |
280 | ||
281 | /* | |
282 | * Skip this entry if the use of it is still on hold until | |
283 | * future. Otherwise handle this entry (and set it on hold | |
284 | * until next time). Will reset only hold times, if already | |
285 | * made one successfull connection... [this algorithm is | |
286 | * a bit fuzzy... -- msa >;) ] | |
287 | */ | |
288 | if(tmp_p->hold > rb_current_time()) | |
289 | { | |
290 | if(next > tmp_p->hold || next == 0) | |
291 | next = tmp_p->hold; | |
292 | continue; | |
293 | } | |
294 | ||
295 | confrq = get_con_freq(cltmp); | |
296 | tmp_p->hold = rb_current_time() + confrq; | |
297 | ||
298 | /* | |
299 | * Found a CONNECT config with port specified, scan clients | |
300 | * and see if this server is already connected? | |
301 | */ | |
302 | client_p = find_server(NULL, tmp_p->name); | |
303 | ||
304 | if(!client_p && (CurrUsers(cltmp) < MaxUsers(cltmp)) && !connecting) | |
305 | { | |
306 | server_p = tmp_p; | |
307 | ||
308 | /* We connect only one at time... */ | |
309 | connecting = true; | |
310 | } | |
311 | ||
312 | if((next > tmp_p->hold) || (next == 0)) | |
313 | next = tmp_p->hold; | |
314 | } | |
315 | ||
316 | /* TODO: change this to set active flag to 0 when added to event! --Habeeb */ | |
317 | if(GlobalSetOptions.autoconn == 0) | |
318 | return; | |
319 | ||
320 | if(!connecting) | |
321 | return; | |
322 | ||
323 | /* move this connect entry to end.. */ | |
324 | rb_dlinkDelete(&server_p->node, &server_conf_list); | |
325 | rb_dlinkAddTail(server_p, &server_p->node, &server_conf_list); | |
326 | ||
327 | /* | |
328 | * We used to only print this if serv_connect() actually | |
329 | * suceeded, but since rb_tcp_connect() can call the callback | |
330 | * immediately if there is an error, we were getting error messages | |
331 | * in the wrong order. SO, we just print out the activated line, | |
332 | * and let serv_connect() / serv_connect_callback() print an | |
333 | * error afterwards if it fails. | |
334 | * -- adrian | |
335 | */ | |
336 | sendto_realops_snomask(SNO_GENERAL, L_ALL, | |
337 | "Connection to %s activated", | |
338 | server_p->name); | |
339 | ||
340 | serv_connect(server_p, 0); | |
341 | } | |
342 | ||
343 | int | |
344 | check_server(const char *name, struct Client *client_p) | |
345 | { | |
346 | struct server_conf *server_p = NULL; | |
347 | struct server_conf *tmp_p; | |
348 | rb_dlink_node *ptr; | |
349 | int error = -1; | |
350 | const char *encr; | |
351 | ||
352 | s_assert(NULL != client_p); | |
353 | if(client_p == NULL) | |
354 | return error; | |
355 | ||
356 | if(!(client_p->localClient->passwd)) | |
357 | return -2; | |
358 | ||
359 | if(strlen(name) > HOSTLEN) | |
360 | return -4; | |
361 | ||
362 | RB_DLINK_FOREACH(ptr, server_conf_list.head) | |
363 | { | |
364 | tmp_p = ptr->data; | |
365 | ||
366 | if(ServerConfIllegal(tmp_p)) | |
367 | continue; | |
368 | ||
369 | if(!match(tmp_p->name, name)) | |
370 | continue; | |
371 | ||
372 | error = -3; | |
373 | ||
374 | /* XXX: Fix me for IPv6 */ | |
375 | /* XXX sockhost is the IPv4 ip as a string */ | |
376 | if(match(tmp_p->host, client_p->host) || | |
377 | match(tmp_p->host, client_p->sockhost)) | |
378 | { | |
379 | error = -2; | |
380 | ||
381 | if(tmp_p->passwd) | |
382 | { | |
383 | if(ServerConfEncrypted(tmp_p)) | |
384 | { | |
385 | encr = rb_crypt(client_p->localClient->passwd, | |
386 | tmp_p->passwd); | |
387 | if(encr != NULL && !strcmp(tmp_p->passwd, encr)) | |
388 | { | |
389 | server_p = tmp_p; | |
390 | break; | |
391 | } | |
392 | else | |
393 | continue; | |
394 | } | |
395 | else if(strcmp(tmp_p->passwd, client_p->localClient->passwd)) | |
396 | continue; | |
397 | } | |
398 | ||
399 | if(tmp_p->certfp) | |
400 | { | |
401 | if(!client_p->certfp || strcasecmp(tmp_p->certfp, client_p->certfp) != 0) | |
402 | continue; | |
403 | } | |
404 | ||
405 | server_p = tmp_p; | |
406 | break; | |
407 | } | |
408 | } | |
409 | ||
410 | if(server_p == NULL) | |
411 | return error; | |
412 | ||
413 | if(ServerConfSSL(server_p) && client_p->localClient->ssl_ctl == NULL) | |
414 | { | |
415 | return -5; | |
416 | } | |
417 | ||
418 | attach_server_conf(client_p, server_p); | |
419 | ||
420 | /* clear ZIP/TB if they support but we dont want them */ | |
421 | #ifdef HAVE_LIBZ | |
422 | if(!ServerConfCompressed(server_p)) | |
423 | #endif | |
424 | ClearCap(client_p, CAP_ZIP); | |
425 | ||
426 | if(!ServerConfTb(server_p)) | |
427 | ClearCap(client_p, CAP_TB); | |
428 | ||
429 | return 0; | |
430 | } | |
431 | ||
432 | /* | |
433 | * send_capabilities | |
434 | * | |
435 | * inputs - Client pointer to send to | |
436 | * - int flag of capabilities that this server has | |
437 | * output - NONE | |
438 | * side effects - send the CAPAB line to a server -orabidoo | |
439 | */ | |
440 | void | |
441 | send_capabilities(struct Client *client_p, unsigned int cap_can_send) | |
442 | { | |
443 | sendto_one(client_p, "CAPAB :%s", capability_index_list(serv_capindex, cap_can_send)); | |
444 | } | |
445 | ||
446 | static void | |
447 | burst_ban(struct Client *client_p) | |
448 | { | |
449 | rb_dlink_node *ptr; | |
450 | struct ConfItem *aconf; | |
451 | const char *type, *oper; | |
452 | /* +5 for !,@,{,} and null */ | |
453 | char operbuf[NICKLEN + USERLEN + HOSTLEN + HOSTLEN + 5]; | |
454 | char *p; | |
455 | size_t melen; | |
456 | ||
457 | melen = strlen(me.name); | |
458 | RB_DLINK_FOREACH(ptr, prop_bans.head) | |
459 | { | |
460 | aconf = ptr->data; | |
461 | ||
462 | /* Skip expired stuff. */ | |
463 | if(aconf->lifetime < rb_current_time()) | |
464 | continue; | |
465 | switch(aconf->status & ~CONF_ILLEGAL) | |
466 | { | |
467 | case CONF_KILL: type = "K"; break; | |
468 | case CONF_DLINE: type = "D"; break; | |
469 | case CONF_XLINE: type = "X"; break; | |
470 | case CONF_RESV_NICK: type = "R"; break; | |
471 | case CONF_RESV_CHANNEL: type = "R"; break; | |
472 | default: | |
473 | continue; | |
474 | } | |
475 | oper = aconf->info.oper; | |
476 | if(aconf->flags & CONF_FLAGS_MYOPER) | |
477 | { | |
478 | /* Our operator{} names may not be meaningful | |
479 | * to other servers, so rewrite to our server | |
480 | * name. | |
481 | */ | |
482 | rb_strlcpy(operbuf, aconf->info.oper, sizeof buf); | |
483 | p = strrchr(operbuf, '{'); | |
484 | if (p != NULL && | |
485 | operbuf + sizeof operbuf - p > (ptrdiff_t)(melen + 2)) | |
486 | { | |
487 | memcpy(p + 1, me.name, melen); | |
488 | p[melen + 1] = '}'; | |
489 | p[melen + 2] = '\0'; | |
490 | oper = operbuf; | |
491 | } | |
492 | } | |
493 | sendto_one(client_p, ":%s BAN %s %s %s %lu %d %d %s :%s%s%s", | |
494 | me.id, | |
495 | type, | |
496 | aconf->user ? aconf->user : "*", aconf->host, | |
497 | (unsigned long)aconf->created, | |
498 | (int)(aconf->hold - aconf->created), | |
499 | (int)(aconf->lifetime - aconf->created), | |
500 | oper, | |
501 | aconf->passwd, | |
502 | aconf->spasswd ? "|" : "", | |
503 | aconf->spasswd ? aconf->spasswd : ""); | |
504 | } | |
505 | } | |
506 | ||
507 | /* burst_modes_TS6() | |
508 | * | |
509 | * input - client to burst to, channel name, list to burst, mode flag | |
510 | * output - | |
511 | * side effects - client is sent a list of +b, +e, or +I modes | |
512 | */ | |
513 | static void | |
514 | burst_modes_TS6(struct Client *client_p, struct Channel *chptr, | |
515 | rb_dlink_list *list, char flag) | |
516 | { | |
517 | rb_dlink_node *ptr; | |
518 | struct Ban *banptr; | |
519 | char *t; | |
520 | int tlen; | |
521 | int mlen; | |
522 | int cur_len; | |
523 | ||
524 | cur_len = mlen = sprintf(buf, ":%s BMASK %ld %s %c :", | |
525 | me.id, (long) chptr->channelts, chptr->chname, flag); | |
526 | t = buf + mlen; | |
527 | ||
528 | RB_DLINK_FOREACH(ptr, list->head) | |
529 | { | |
530 | banptr = ptr->data; | |
531 | ||
532 | tlen = strlen(banptr->banstr) + (banptr->forward ? strlen(banptr->forward) + 1 : 0) + 1; | |
533 | ||
534 | /* uh oh */ | |
535 | if(cur_len + tlen > BUFSIZE - 3) | |
536 | { | |
537 | /* the one we're trying to send doesnt fit at all! */ | |
538 | if(cur_len == mlen) | |
539 | { | |
540 | s_assert(0); | |
541 | continue; | |
542 | } | |
543 | ||
544 | /* chop off trailing space and send.. */ | |
545 | *(t-1) = '\0'; | |
546 | sendto_one(client_p, "%s", buf); | |
547 | cur_len = mlen; | |
548 | t = buf + mlen; | |
549 | } | |
550 | ||
551 | if (banptr->forward) | |
552 | sprintf(t, "%s$%s ", banptr->banstr, banptr->forward); | |
553 | else | |
554 | sprintf(t, "%s ", banptr->banstr); | |
555 | t += tlen; | |
556 | cur_len += tlen; | |
557 | } | |
558 | ||
559 | /* cant ever exit the loop above without having modified buf, | |
560 | * chop off trailing space and send. | |
561 | */ | |
562 | *(t-1) = '\0'; | |
563 | sendto_one(client_p, "%s", buf); | |
564 | } | |
565 | ||
566 | /* | |
567 | * burst_TS6 | |
568 | * | |
569 | * inputs - client (server) to send nick towards | |
570 | * - client to send nick for | |
571 | * output - NONE | |
572 | * side effects - NICK message is sent towards given client_p | |
573 | */ | |
574 | static void | |
575 | burst_TS6(struct Client *client_p) | |
576 | { | |
577 | char ubuf[BUFSIZE]; | |
578 | struct Client *target_p; | |
579 | struct Channel *chptr; | |
580 | struct membership *msptr; | |
581 | hook_data_client hclientinfo; | |
582 | hook_data_channel hchaninfo; | |
583 | rb_dlink_node *ptr; | |
584 | rb_dlink_node *uptr; | |
585 | char *t; | |
586 | int tlen, mlen; | |
587 | int cur_len = 0; | |
588 | ||
589 | hclientinfo.client = hchaninfo.client = client_p; | |
590 | ||
591 | RB_DLINK_FOREACH(ptr, global_client_list.head) | |
592 | { | |
593 | target_p = ptr->data; | |
594 | ||
595 | if(!IsPerson(target_p)) | |
596 | continue; | |
597 | ||
598 | send_umode(NULL, target_p, 0, ubuf); | |
599 | if(!*ubuf) | |
600 | { | |
601 | ubuf[0] = '+'; | |
602 | ubuf[1] = '\0'; | |
603 | } | |
604 | ||
605 | if(IsCapable(client_p, CAP_EUID)) | |
606 | sendto_one(client_p, ":%s EUID %s %d %ld %s %s %s %s %s %s %s :%s", | |
607 | target_p->servptr->id, target_p->name, | |
608 | target_p->hopcount + 1, | |
609 | (long) target_p->tsinfo, ubuf, | |
610 | target_p->username, target_p->host, | |
611 | IsIPSpoof(target_p) ? "0" : target_p->sockhost, | |
612 | target_p->id, | |
613 | IsDynSpoof(target_p) ? target_p->orighost : "*", | |
614 | EmptyString(target_p->user->suser) ? "*" : target_p->user->suser, | |
615 | target_p->info); | |
616 | else | |
617 | sendto_one(client_p, ":%s UID %s %d %ld %s %s %s %s %s :%s", | |
618 | target_p->servptr->id, target_p->name, | |
619 | target_p->hopcount + 1, | |
620 | (long) target_p->tsinfo, ubuf, | |
621 | target_p->username, target_p->host, | |
622 | IsIPSpoof(target_p) ? "0" : target_p->sockhost, | |
623 | target_p->id, target_p->info); | |
624 | ||
625 | if(!EmptyString(target_p->certfp)) | |
626 | sendto_one(client_p, ":%s ENCAP * CERTFP :%s", | |
627 | use_id(target_p), target_p->certfp); | |
628 | ||
629 | if(!IsCapable(client_p, CAP_EUID)) | |
630 | { | |
631 | if(IsDynSpoof(target_p)) | |
632 | sendto_one(client_p, ":%s ENCAP * REALHOST %s", | |
633 | use_id(target_p), target_p->orighost); | |
634 | if(!EmptyString(target_p->user->suser)) | |
635 | sendto_one(client_p, ":%s ENCAP * LOGIN %s", | |
636 | use_id(target_p), target_p->user->suser); | |
637 | } | |
638 | ||
639 | if(ConfigFileEntry.burst_away && !EmptyString(target_p->user->away)) | |
640 | sendto_one(client_p, ":%s AWAY :%s", | |
641 | use_id(target_p), | |
642 | target_p->user->away); | |
643 | ||
644 | hclientinfo.target = target_p; | |
645 | call_hook(h_burst_client, &hclientinfo); | |
646 | } | |
647 | ||
648 | RB_DLINK_FOREACH(ptr, global_channel_list.head) | |
649 | { | |
650 | chptr = ptr->data; | |
651 | ||
652 | if(*chptr->chname != '#') | |
653 | continue; | |
654 | ||
655 | cur_len = mlen = sprintf(buf, ":%s SJOIN %ld %s %s :", me.id, | |
656 | (long) chptr->channelts, chptr->chname, | |
657 | channel_modes(chptr, client_p)); | |
658 | ||
659 | t = buf + mlen; | |
660 | ||
661 | RB_DLINK_FOREACH(uptr, chptr->members.head) | |
662 | { | |
663 | msptr = uptr->data; | |
664 | ||
665 | tlen = strlen(use_id(msptr->client_p)) + 1; | |
666 | if(is_chanop(msptr)) | |
667 | tlen++; | |
668 | if(is_voiced(msptr)) | |
669 | tlen++; | |
670 | ||
671 | if(cur_len + tlen >= BUFSIZE - 3) | |
672 | { | |
673 | *(t-1) = '\0'; | |
674 | sendto_one(client_p, "%s", buf); | |
675 | cur_len = mlen; | |
676 | t = buf + mlen; | |
677 | } | |
678 | ||
679 | sprintf(t, "%s%s ", find_channel_status(msptr, 1), | |
680 | use_id(msptr->client_p)); | |
681 | ||
682 | cur_len += tlen; | |
683 | t += tlen; | |
684 | } | |
685 | ||
686 | if (rb_dlink_list_length(&chptr->members) > 0) | |
687 | { | |
688 | /* remove trailing space */ | |
689 | *(t-1) = '\0'; | |
690 | } | |
691 | sendto_one(client_p, "%s", buf); | |
692 | ||
693 | if(rb_dlink_list_length(&chptr->banlist) > 0) | |
694 | burst_modes_TS6(client_p, chptr, &chptr->banlist, 'b'); | |
695 | ||
696 | if(IsCapable(client_p, CAP_EX) && | |
697 | rb_dlink_list_length(&chptr->exceptlist) > 0) | |
698 | burst_modes_TS6(client_p, chptr, &chptr->exceptlist, 'e'); | |
699 | ||
700 | if(IsCapable(client_p, CAP_IE) && | |
701 | rb_dlink_list_length(&chptr->invexlist) > 0) | |
702 | burst_modes_TS6(client_p, chptr, &chptr->invexlist, 'I'); | |
703 | ||
704 | if(rb_dlink_list_length(&chptr->quietlist) > 0) | |
705 | burst_modes_TS6(client_p, chptr, &chptr->quietlist, 'q'); | |
706 | ||
707 | if(IsCapable(client_p, CAP_TB) && chptr->topic != NULL) | |
708 | sendto_one(client_p, ":%s TB %s %ld %s%s:%s", | |
709 | me.id, chptr->chname, (long) chptr->topic_time, | |
710 | ConfigChannel.burst_topicwho ? chptr->topic_info : "", | |
711 | ConfigChannel.burst_topicwho ? " " : "", | |
712 | chptr->topic); | |
713 | ||
714 | if(IsCapable(client_p, CAP_MLOCK)) | |
715 | sendto_one(client_p, ":%s MLOCK %ld %s :%s", | |
716 | me.id, (long) chptr->channelts, chptr->chname, | |
717 | EmptyString(chptr->mode_lock) ? "" : chptr->mode_lock); | |
718 | ||
719 | hchaninfo.chptr = chptr; | |
720 | call_hook(h_burst_channel, &hchaninfo); | |
721 | } | |
722 | ||
723 | hclientinfo.target = NULL; | |
724 | call_hook(h_burst_finished, &hclientinfo); | |
725 | } | |
726 | ||
727 | /* | |
728 | * show_capabilities - show current server capabilities | |
729 | * | |
730 | * inputs - pointer to an struct Client | |
731 | * output - pointer to static string | |
732 | * side effects - build up string representing capabilities of server listed | |
733 | */ | |
734 | const char * | |
735 | show_capabilities(struct Client *target_p) | |
736 | { | |
737 | static char msgbuf[BUFSIZE]; | |
738 | ||
739 | *msgbuf = '\0'; | |
740 | ||
741 | if(has_id(target_p)) | |
742 | rb_strlcpy(msgbuf, " TS6", sizeof(msgbuf)); | |
743 | ||
744 | if(IsSSL(target_p)) | |
745 | rb_strlcat(msgbuf, " SSL", sizeof(msgbuf)); | |
746 | ||
747 | if(!IsServer(target_p) || !target_p->serv->caps) /* short circuit if no caps */ | |
748 | return msgbuf + 1; | |
749 | ||
750 | rb_strlcat(msgbuf, " ", sizeof(msgbuf)); | |
751 | rb_strlcat(msgbuf, capability_index_list(serv_capindex, target_p->serv->caps), sizeof(msgbuf)); | |
752 | ||
753 | return msgbuf + 1; | |
754 | } | |
755 | ||
756 | /* | |
757 | * server_estab | |
758 | * | |
759 | * inputs - pointer to a struct Client | |
760 | * output - | |
761 | * side effects - | |
762 | */ | |
763 | int | |
764 | server_estab(struct Client *client_p) | |
765 | { | |
766 | struct Client *target_p; | |
767 | struct server_conf *server_p; | |
768 | hook_data_client hdata; | |
769 | char *host; | |
770 | rb_dlink_node *ptr; | |
771 | char note[HOSTLEN + 15]; | |
772 | ||
773 | s_assert(NULL != client_p); | |
774 | if(client_p == NULL) | |
775 | return -1; | |
776 | ||
777 | host = client_p->name; | |
778 | ||
779 | if((server_p = client_p->localClient->att_sconf) == NULL) | |
780 | { | |
781 | /* This shouldn't happen, better tell the ops... -A1kmm */ | |
782 | sendto_realops_snomask(SNO_GENERAL, is_remote_connect(client_p) ? L_NETWIDE : L_ALL, | |
783 | "Warning: Lost connect{} block for server %s!", host); | |
784 | return exit_client(client_p, client_p, client_p, "Lost connect{} block!"); | |
785 | } | |
786 | ||
787 | /* We shouldn't have to check this, it should already done before | |
788 | * server_estab is called. -A1kmm | |
789 | */ | |
790 | if(client_p->localClient->passwd) | |
791 | { | |
792 | memset(client_p->localClient->passwd, 0, strlen(client_p->localClient->passwd)); | |
793 | rb_free(client_p->localClient->passwd); | |
794 | client_p->localClient->passwd = NULL; | |
795 | } | |
796 | ||
797 | /* Its got identd , since its a server */ | |
798 | SetGotId(client_p); | |
799 | ||
800 | if(IsUnknown(client_p)) | |
801 | { | |
802 | /* the server may be linking based on certificate fingerprint now. --nenolod */ | |
803 | sendto_one(client_p, "PASS %s TS %d :%s", | |
804 | EmptyString(server_p->spasswd) ? "*" : server_p->spasswd, TS_CURRENT, me.id); | |
805 | ||
806 | /* pass info to new server */ | |
807 | send_capabilities(client_p, default_server_capabs | |
808 | | (ServerConfCompressed(server_p) ? CAP_ZIP_SUPPORTED : 0) | |
809 | | (ServerConfTb(server_p) ? CAP_TB : 0)); | |
810 | ||
811 | sendto_one(client_p, "SERVER %s 1 :%s%s", | |
812 | me.name, | |
813 | ConfigServerHide.hidden ? "(H) " : "", | |
814 | (me.info[0]) ? (me.info) : "IRCers United"); | |
815 | } | |
816 | ||
817 | if(!rb_set_buffers(client_p->localClient->F, READBUF_SIZE)) | |
818 | ilog_error("rb_set_buffers failed for server"); | |
819 | ||
820 | /* Enable compression now */ | |
821 | if(IsCapable(client_p, CAP_ZIP)) | |
822 | { | |
823 | start_zlib_session(client_p); | |
824 | } | |
825 | sendto_one(client_p, "SVINFO %d %d 0 :%ld", TS_CURRENT, TS_MIN, (long int)rb_current_time()); | |
826 | ||
827 | client_p->servptr = &me; | |
828 | ||
829 | if(IsAnyDead(client_p)) | |
830 | return CLIENT_EXITED; | |
831 | ||
832 | SetServer(client_p); | |
833 | ||
834 | rb_dlinkAdd(client_p, &client_p->lnode, &me.serv->servers); | |
835 | rb_dlinkMoveNode(&client_p->localClient->tnode, &unknown_list, &serv_list); | |
836 | rb_dlinkAddTailAlloc(client_p, &global_serv_list); | |
837 | ||
838 | if(has_id(client_p)) | |
839 | add_to_id_hash(client_p->id, client_p); | |
840 | ||
841 | add_to_client_hash(client_p->name, client_p); | |
842 | /* doesnt duplicate client_p->serv if allocated this struct already */ | |
843 | make_server(client_p); | |
844 | ||
845 | client_p->serv->caps = client_p->localClient->caps; | |
846 | ||
847 | if(client_p->localClient->fullcaps) | |
848 | { | |
849 | client_p->serv->fullcaps = rb_strdup(client_p->localClient->fullcaps); | |
850 | rb_free(client_p->localClient->fullcaps); | |
851 | client_p->localClient->fullcaps = NULL; | |
852 | } | |
853 | ||
854 | client_p->serv->nameinfo = scache_connect(client_p->name, client_p->info, IsHidden(client_p)); | |
855 | client_p->localClient->firsttime = rb_current_time(); | |
856 | /* fixing eob timings.. -gnp */ | |
857 | ||
858 | if((rb_dlink_list_length(&lclient_list) + rb_dlink_list_length(&serv_list)) > | |
859 | (unsigned long)MaxConnectionCount) | |
860 | MaxConnectionCount = rb_dlink_list_length(&lclient_list) + | |
861 | rb_dlink_list_length(&serv_list); | |
862 | ||
863 | /* Show the real host/IP to admins */ | |
864 | sendto_realops_snomask(SNO_GENERAL, L_ALL, | |
865 | "Link with %s established: (%s) link", | |
866 | client_p->name, | |
867 | show_capabilities(client_p)); | |
868 | ||
869 | ilog(L_SERVER, "Link with %s established: (%s) link", | |
870 | log_client_name(client_p, SHOW_IP), show_capabilities(client_p)); | |
871 | ||
872 | hdata.client = &me; | |
873 | hdata.target = client_p; | |
874 | call_hook(h_server_introduced, &hdata); | |
875 | ||
876 | snprintf(note, sizeof(note), "Server: %s", client_p->name); | |
877 | rb_note(client_p->localClient->F, note); | |
878 | ||
879 | /* | |
880 | ** Old sendto_serv_but_one() call removed because we now | |
881 | ** need to send different names to different servers | |
882 | ** (domain name matching) Send new server to other servers. | |
883 | */ | |
884 | RB_DLINK_FOREACH(ptr, serv_list.head) | |
885 | { | |
886 | target_p = ptr->data; | |
887 | ||
888 | if(target_p == client_p) | |
889 | continue; | |
890 | ||
891 | if(has_id(target_p) && has_id(client_p)) | |
892 | { | |
893 | sendto_one(target_p, ":%s SID %s 2 %s :%s%s", | |
894 | me.id, client_p->name, client_p->id, | |
895 | IsHidden(client_p) ? "(H) " : "", client_p->info); | |
896 | ||
897 | if(!EmptyString(client_p->serv->fullcaps)) | |
898 | sendto_one(target_p, ":%s ENCAP * GCAP :%s", | |
899 | client_p->id, client_p->serv->fullcaps); | |
900 | } | |
901 | else | |
902 | { | |
903 | sendto_one(target_p, ":%s SERVER %s 2 :%s%s", | |
904 | me.name, client_p->name, | |
905 | IsHidden(client_p) ? "(H) " : "", client_p->info); | |
906 | ||
907 | if(!EmptyString(client_p->serv->fullcaps)) | |
908 | sendto_one(target_p, ":%s ENCAP * GCAP :%s", | |
909 | client_p->name, client_p->serv->fullcaps); | |
910 | } | |
911 | } | |
912 | ||
913 | /* | |
914 | ** Pass on my client information to the new server | |
915 | ** | |
916 | ** First, pass only servers (idea is that if the link gets | |
917 | ** cancelled beacause the server was already there, | |
918 | ** there are no NICK's to be cancelled...). Of course, | |
919 | ** if cancellation occurs, all this info is sent anyway, | |
920 | ** and I guess the link dies when a read is attempted...? --msa | |
921 | ** | |
922 | ** Note: Link cancellation to occur at this point means | |
923 | ** that at least two servers from my fragment are building | |
924 | ** up connection this other fragment at the same time, it's | |
925 | ** a race condition, not the normal way of operation... | |
926 | ** | |
927 | ** ALSO NOTE: using the get_client_name for server names-- | |
928 | ** see previous *WARNING*!!! (Also, original inpath | |
929 | ** is destroyed...) | |
930 | */ | |
931 | RB_DLINK_FOREACH(ptr, global_serv_list.head) | |
932 | { | |
933 | target_p = ptr->data; | |
934 | ||
935 | /* target_p->from == target_p for target_p == client_p */ | |
936 | if(IsMe(target_p) || target_p->from == client_p) | |
937 | continue; | |
938 | ||
939 | /* presumption, if target has an id, so does its uplink */ | |
940 | if(has_id(client_p) && has_id(target_p)) | |
941 | sendto_one(client_p, ":%s SID %s %d %s :%s%s", | |
942 | target_p->servptr->id, target_p->name, | |
943 | target_p->hopcount + 1, target_p->id, | |
944 | IsHidden(target_p) ? "(H) " : "", target_p->info); | |
945 | else | |
946 | sendto_one(client_p, ":%s SERVER %s %d :%s%s", | |
947 | target_p->servptr->name, | |
948 | target_p->name, target_p->hopcount + 1, | |
949 | IsHidden(target_p) ? "(H) " : "", target_p->info); | |
950 | ||
951 | if(!EmptyString(target_p->serv->fullcaps)) | |
952 | sendto_one(client_p, ":%s ENCAP * GCAP :%s", | |
953 | get_id(target_p, client_p), | |
954 | target_p->serv->fullcaps); | |
955 | } | |
956 | ||
957 | if(IsCapable(client_p, CAP_BAN)) | |
958 | burst_ban(client_p); | |
959 | ||
960 | burst_TS6(client_p); | |
961 | ||
962 | /* Always send a PING after connect burst is done */ | |
963 | sendto_one(client_p, "PING :%s", get_id(&me, client_p)); | |
964 | ||
965 | free_pre_client(client_p); | |
966 | ||
967 | send_pop_queue(client_p); | |
968 | ||
969 | return 0; | |
970 | } | |
971 | ||
972 | /* | |
973 | * New server connection code | |
974 | * Based upon the stuff floating about in s_bsd.c | |
975 | * -- adrian | |
976 | */ | |
977 | ||
978 | /* | |
979 | * serv_connect() - initiate a server connection | |
980 | * | |
981 | * inputs - pointer to conf | |
982 | * - pointer to client doing the connet | |
983 | * output - | |
984 | * side effects - | |
985 | * | |
986 | * This code initiates a connection to a server. It first checks to make | |
987 | * sure the given server exists. If this is the case, it creates a socket, | |
988 | * creates a client, saves the socket information in the client, and | |
989 | * initiates a connection to the server through rb_connect_tcp(). The | |
990 | * completion of this goes through serv_completed_connection(). | |
991 | * | |
992 | * We return 1 if the connection is attempted, since we don't know whether | |
993 | * it suceeded or not, and 0 if it fails in here somewhere. | |
994 | */ | |
995 | int | |
996 | serv_connect(struct server_conf *server_p, struct Client *by) | |
997 | { | |
998 | struct Client *client_p; | |
999 | struct rb_sockaddr_storage myipnum; | |
1000 | char note[HOSTLEN + 10]; | |
1001 | rb_fde_t *F; | |
1002 | ||
1003 | s_assert(server_p != NULL); | |
1004 | if(server_p == NULL) | |
1005 | return 0; | |
1006 | ||
1007 | /* log */ | |
1008 | rb_inet_ntop_sock((struct sockaddr *)&server_p->my_ipnum, buf, sizeof(buf)); | |
1009 | ilog(L_SERVER, "Connect to *[%s] @%s", server_p->name, buf); | |
1010 | ||
1011 | /* | |
1012 | * Make sure this server isn't already connected | |
1013 | */ | |
1014 | if((client_p = find_server(NULL, server_p->name))) | |
1015 | { | |
1016 | sendto_realops_snomask(SNO_GENERAL, L_ALL, | |
1017 | "Server %s already present from %s", | |
1018 | server_p->name, client_p->name); | |
1019 | if(by && IsPerson(by) && !MyClient(by)) | |
1020 | sendto_one_notice(by, ":Server %s already present from %s", | |
1021 | server_p->name, client_p->name); | |
1022 | return 0; | |
1023 | } | |
1024 | ||
1025 | /* create a socket for the server connection */ | |
1026 | if((F = rb_socket(GET_SS_FAMILY(&server_p->my_ipnum), SOCK_STREAM, 0, NULL)) == NULL) | |
1027 | { | |
1028 | ilog_error("opening a stream socket"); | |
1029 | return 0; | |
1030 | } | |
1031 | ||
1032 | /* servernames are always guaranteed under HOSTLEN chars */ | |
1033 | snprintf(note, sizeof(note), "Server: %s", server_p->name); | |
1034 | rb_note(F, note); | |
1035 | ||
1036 | /* Create a local client */ | |
1037 | client_p = make_client(NULL); | |
1038 | ||
1039 | /* Copy in the server, hostname, fd */ | |
1040 | rb_strlcpy(client_p->name, server_p->name, sizeof(client_p->name)); | |
1041 | rb_strlcpy(client_p->host, server_p->host, sizeof(client_p->host)); | |
1042 | rb_strlcpy(client_p->sockhost, buf, sizeof(client_p->sockhost)); | |
1043 | client_p->localClient->F = F; | |
1044 | /* shove the port number into the sockaddr */ | |
1045 | #ifdef RB_IPV6 | |
1046 | if(GET_SS_FAMILY(&server_p->my_ipnum) == AF_INET6) | |
1047 | ((struct sockaddr_in6 *)&server_p->my_ipnum)->sin6_port = htons(server_p->port); | |
1048 | else | |
1049 | #endif | |
1050 | ((struct sockaddr_in *)&server_p->my_ipnum)->sin_port = htons(server_p->port); | |
1051 | ||
1052 | /* | |
1053 | * Set up the initial server evilness, ripped straight from | |
1054 | * connect_server(), so don't blame me for it being evil. | |
1055 | * -- adrian | |
1056 | */ | |
1057 | ||
1058 | if(!rb_set_buffers(client_p->localClient->F, READBUF_SIZE)) | |
1059 | { | |
1060 | ilog_error("setting the buffer size for a server connection"); | |
1061 | } | |
1062 | ||
1063 | /* | |
1064 | * Attach config entries to client here rather than in | |
1065 | * serv_connect_callback(). This to avoid null pointer references. | |
1066 | */ | |
1067 | attach_server_conf(client_p, server_p); | |
1068 | ||
1069 | /* | |
1070 | * at this point we have a connection in progress and C/N lines | |
1071 | * attached to the client, the socket info should be saved in the | |
1072 | * client and it should either be resolved or have a valid address. | |
1073 | * | |
1074 | * The socket has been connected or connect is in progress. | |
1075 | */ | |
1076 | make_server(client_p); | |
1077 | if(by && IsClient(by)) | |
1078 | strcpy(client_p->serv->by, by->name); | |
1079 | else | |
1080 | strcpy(client_p->serv->by, "AutoConn."); | |
1081 | ||
1082 | SetConnecting(client_p); | |
1083 | rb_dlinkAddTail(client_p, &client_p->node, &global_client_list); | |
1084 | ||
1085 | if(ServerConfVhosted(server_p)) | |
1086 | { | |
1087 | memcpy(&myipnum, &server_p->my_ipnum, sizeof(myipnum)); | |
1088 | ((struct sockaddr_in *)&myipnum)->sin_port = 0; | |
1089 | SET_SS_FAMILY(&myipnum, GET_SS_FAMILY(&server_p->my_ipnum)); | |
1090 | ||
1091 | } | |
1092 | else if(GET_SS_FAMILY(&server_p->my_ipnum) == AF_INET && ServerInfo.specific_ipv4_vhost) | |
1093 | { | |
1094 | memcpy(&myipnum, &ServerInfo.ip, sizeof(myipnum)); | |
1095 | ((struct sockaddr_in *)&myipnum)->sin_port = 0; | |
1096 | SET_SS_FAMILY(&myipnum, AF_INET); | |
1097 | SET_SS_LEN(&myipnum, sizeof(struct sockaddr_in)); | |
1098 | } | |
1099 | ||
1100 | #ifdef RB_IPV6 | |
1101 | else if((GET_SS_FAMILY(&server_p->my_ipnum) == AF_INET6) && ServerInfo.specific_ipv6_vhost) | |
1102 | { | |
1103 | memcpy(&myipnum, &ServerInfo.ip6, sizeof(myipnum)); | |
1104 | ((struct sockaddr_in6 *)&myipnum)->sin6_port = 0; | |
1105 | SET_SS_FAMILY(&myipnum, AF_INET6); | |
1106 | SET_SS_LEN(&myipnum, sizeof(struct sockaddr_in6)); | |
1107 | } | |
1108 | #endif | |
1109 | else | |
1110 | { | |
1111 | if(ServerConfSSL(server_p)) | |
1112 | { | |
1113 | rb_connect_tcp(client_p->localClient->F, | |
1114 | (struct sockaddr *)&server_p->my_ipnum, NULL, 0, | |
1115 | serv_connect_ssl_callback, client_p, | |
1116 | ConfigFileEntry.connect_timeout); | |
1117 | } | |
1118 | else | |
1119 | rb_connect_tcp(client_p->localClient->F, | |
1120 | (struct sockaddr *)&server_p->my_ipnum, NULL, 0, | |
1121 | serv_connect_callback, client_p, | |
1122 | ConfigFileEntry.connect_timeout); | |
1123 | ||
1124 | return 1; | |
1125 | } | |
1126 | if(ServerConfSSL(server_p)) | |
1127 | rb_connect_tcp(client_p->localClient->F, (struct sockaddr *)&server_p->my_ipnum, | |
1128 | (struct sockaddr *)&myipnum, | |
1129 | GET_SS_LEN(&myipnum), serv_connect_ssl_callback, client_p, | |
1130 | ConfigFileEntry.connect_timeout); | |
1131 | else | |
1132 | rb_connect_tcp(client_p->localClient->F, (struct sockaddr *)&server_p->my_ipnum, | |
1133 | (struct sockaddr *)&myipnum, | |
1134 | GET_SS_LEN(&myipnum), serv_connect_callback, client_p, | |
1135 | ConfigFileEntry.connect_timeout); | |
1136 | ||
1137 | return 1; | |
1138 | } | |
1139 | ||
1140 | static void | |
1141 | serv_connect_ssl_callback(rb_fde_t *F, int status, void *data) | |
1142 | { | |
1143 | struct Client *client_p = data; | |
1144 | rb_fde_t *xF[2]; | |
1145 | rb_connect_sockaddr(F, (struct sockaddr *)&client_p->localClient->ip, sizeof(client_p->localClient->ip)); | |
1146 | if(status != RB_OK) | |
1147 | { | |
1148 | /* Print error message, just like non-SSL. */ | |
1149 | serv_connect_callback(F, status, data); | |
1150 | return; | |
1151 | } | |
1152 | if(rb_socketpair(AF_UNIX, SOCK_STREAM, 0, &xF[0], &xF[1], "Outgoing ssld connection") == -1) | |
1153 | { | |
1154 | ilog_error("rb_socketpair failed for server"); | |
1155 | serv_connect_callback(F, RB_ERROR, data); | |
1156 | return; | |
1157 | ||
1158 | } | |
1159 | client_p->localClient->F = xF[0]; | |
1160 | ||
1161 | client_p->localClient->ssl_ctl = start_ssld_connect(F, xF[1], rb_get_fd(xF[0])); | |
1162 | if(!client_p->localClient->ssl_ctl) | |
1163 | { | |
1164 | serv_connect_callback(client_p->localClient->F, RB_ERROR, data); | |
1165 | return; | |
1166 | } | |
1167 | SetSSL(client_p); | |
1168 | serv_connect_callback(client_p->localClient->F, RB_OK, client_p); | |
1169 | } | |
1170 | ||
1171 | /* | |
1172 | * serv_connect_callback() - complete a server connection. | |
1173 | * | |
1174 | * This routine is called after the server connection attempt has | |
1175 | * completed. If unsucessful, an error is sent to ops and the client | |
1176 | * is closed. If sucessful, it goes through the initialisation/check | |
1177 | * procedures, the capabilities are sent, and the socket is then | |
1178 | * marked for reading. | |
1179 | */ | |
1180 | static void | |
1181 | serv_connect_callback(rb_fde_t *F, int status, void *data) | |
1182 | { | |
1183 | struct Client *client_p = data; | |
1184 | struct server_conf *server_p; | |
1185 | char *errstr; | |
1186 | ||
1187 | /* First, make sure its a real client! */ | |
1188 | s_assert(client_p != NULL); | |
1189 | s_assert(client_p->localClient->F == F); | |
1190 | ||
1191 | if(client_p == NULL) | |
1192 | return; | |
1193 | ||
1194 | /* while we were waiting for the callback, its possible this already | |
1195 | * linked in.. --fl | |
1196 | */ | |
1197 | if(find_server(NULL, client_p->name) != NULL) | |
1198 | { | |
1199 | exit_client(client_p, client_p, &me, "Server Exists"); | |
1200 | return; | |
1201 | } | |
1202 | ||
1203 | if(client_p->localClient->ssl_ctl == NULL) | |
1204 | rb_connect_sockaddr(F, (struct sockaddr *)&client_p->localClient->ip, sizeof(client_p->localClient->ip)); | |
1205 | ||
1206 | /* Check the status */ | |
1207 | if(status != RB_OK) | |
1208 | { | |
1209 | /* COMM_ERR_TIMEOUT wont have an errno associated with it, | |
1210 | * the others will.. --fl | |
1211 | */ | |
1212 | if(status == RB_ERR_TIMEOUT) | |
1213 | { | |
1214 | sendto_realops_snomask(SNO_GENERAL, is_remote_connect(client_p) ? L_NETWIDE : L_ALL, | |
1215 | "Error connecting to %s[%s]: %s", | |
1216 | client_p->name, | |
1217 | "255.255.255.255", | |
1218 | rb_errstr(status)); | |
1219 | ilog(L_SERVER, "Error connecting to %s[%s]: %s", | |
1220 | client_p->name, client_p->sockhost, | |
1221 | rb_errstr(status)); | |
1222 | } | |
1223 | else | |
1224 | { | |
1225 | errstr = strerror(rb_get_sockerr(F)); | |
1226 | sendto_realops_snomask(SNO_GENERAL, is_remote_connect(client_p) ? L_NETWIDE : L_ALL, | |
1227 | "Error connecting to %s[%s]: %s (%s)", | |
1228 | client_p->name, | |
1229 | "255.255.255.255", | |
1230 | rb_errstr(status), errstr); | |
1231 | ilog(L_SERVER, "Error connecting to %s[%s]: %s (%s)", | |
1232 | client_p->name, client_p->sockhost, | |
1233 | rb_errstr(status), errstr); | |
1234 | } | |
1235 | ||
1236 | exit_client(client_p, client_p, &me, rb_errstr(status)); | |
1237 | return; | |
1238 | } | |
1239 | ||
1240 | /* COMM_OK, so continue the connection procedure */ | |
1241 | /* Get the C/N lines */ | |
1242 | if((server_p = client_p->localClient->att_sconf) == NULL) | |
1243 | { | |
1244 | sendto_realops_snomask(SNO_GENERAL, is_remote_connect(client_p) ? L_NETWIDE : L_ALL, "Lost connect{} block for %s", | |
1245 | client_p->name); | |
1246 | exit_client(client_p, client_p, &me, "Lost connect{} block"); | |
1247 | return; | |
1248 | } | |
1249 | ||
1250 | /* Next, send the initial handshake */ | |
1251 | SetHandshake(client_p); | |
1252 | ||
1253 | /* the server may be linking based on certificate fingerprint now. --nenolod */ | |
1254 | sendto_one(client_p, "PASS %s TS %d :%s", | |
1255 | EmptyString(server_p->spasswd) ? "*" : server_p->spasswd, TS_CURRENT, me.id); | |
1256 | ||
1257 | /* pass my info to the new server */ | |
1258 | send_capabilities(client_p, default_server_capabs | |
1259 | | (ServerConfCompressed(server_p) ? CAP_ZIP_SUPPORTED : 0) | |
1260 | | (ServerConfTb(server_p) ? CAP_TB : 0)); | |
1261 | ||
1262 | sendto_one(client_p, "SERVER %s 1 :%s%s", | |
1263 | me.name, | |
1264 | ConfigServerHide.hidden ? "(H) " : "", me.info); | |
1265 | ||
1266 | /* | |
1267 | * If we've been marked dead because a send failed, just exit | |
1268 | * here now and save everyone the trouble of us ever existing. | |
1269 | */ | |
1270 | if(IsAnyDead(client_p)) | |
1271 | { | |
1272 | sendto_realops_snomask(SNO_GENERAL, is_remote_connect(client_p) ? L_NETWIDE : L_ALL, | |
1273 | "%s went dead during handshake", client_p->name); | |
1274 | exit_client(client_p, client_p, &me, "Went dead during handshake"); | |
1275 | return; | |
1276 | } | |
1277 | ||
1278 | /* don't move to serv_list yet -- we haven't sent a burst! */ | |
1279 | ||
1280 | /* If we get here, we're ok, so lets start reading some data */ | |
1281 | read_packet(F, client_p); | |
1282 | } |