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212380e3 AC |
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 | * | |
cda8e9b8 | 24 | * $Id: s_serv.c 3550 2007-08-09 06:47:26Z nenolod $ |
212380e3 AC |
25 | */ |
26 | ||
27 | #include "stdinc.h" | |
28 | ||
29 | #ifdef HAVE_LIBCRYPTO | |
30 | #include <openssl/rsa.h> | |
31 | #endif | |
32 | ||
212380e3 AC |
33 | #include "s_serv.h" |
34 | #include "class.h" | |
35 | #include "client.h" | |
36 | #include "common.h" | |
212380e3 | 37 | #include "hash.h" |
4562c604 | 38 | #include "match.h" |
212380e3 AC |
39 | #include "ircd.h" |
40 | #include "ircd_defs.h" | |
41 | #include "numeric.h" | |
42 | #include "packet.h" | |
43 | #include "res.h" | |
212380e3 AC |
44 | #include "s_conf.h" |
45 | #include "s_newconf.h" | |
4016731b | 46 | #include "logger.h" |
212380e3 AC |
47 | #include "s_stats.h" |
48 | #include "s_user.h" | |
49 | #include "scache.h" | |
50 | #include "send.h" | |
51 | #include "client.h" | |
212380e3 AC |
52 | #include "channel.h" /* chcap_usage_counts stuff... */ |
53 | #include "hook.h" | |
54 | #include "msg.h" | |
54015b5f | 55 | #include "reject.h" |
c6d72037 | 56 | #include "sslproc.h" |
212380e3 | 57 | |
212380e3 AC |
58 | #ifndef INADDR_NONE |
59 | #define INADDR_NONE ((unsigned int) 0xffffffff) | |
60 | #endif | |
61 | ||
212380e3 AC |
62 | int MaxConnectionCount = 1; |
63 | int MaxClientCount = 1; | |
64 | int refresh_user_links = 0; | |
65 | ||
66 | static char buf[BUFSIZE]; | |
67 | ||
212380e3 AC |
68 | /* |
69 | * list of recognized server capabilities. "TS" is not on the list | |
70 | * because all servers that we talk to already do TS, and the kludged | |
71 | * extra argument to "PASS" takes care of checking that. -orabidoo | |
72 | */ | |
73 | struct Capability captab[] = { | |
74 | /* name cap */ | |
75 | { "QS", CAP_QS }, | |
76 | { "EX", CAP_EX }, | |
77 | { "CHW", CAP_CHW}, | |
78 | { "IE", CAP_IE}, | |
79 | { "KLN", CAP_KLN}, | |
212380e3 AC |
80 | { "KNOCK", CAP_KNOCK}, |
81 | { "ZIP", CAP_ZIP}, | |
82 | { "TB", CAP_TB}, | |
83 | { "UNKLN", CAP_UNKLN}, | |
84 | { "CLUSTER", CAP_CLUSTER}, | |
85 | { "ENCAP", CAP_ENCAP }, | |
86 | { "SERVICES", CAP_SERVICE }, | |
87 | { "RSFNC", CAP_RSFNC }, | |
88 | { "SAVE", CAP_SAVE }, | |
89 | { "EUID", CAP_EUID }, | |
c4d2d014 | 90 | { "EOPMOD", CAP_EOPMOD }, |
431a1a27 | 91 | { "BAN", CAP_BAN }, |
ec55bec5 | 92 | { "MLOCK", CAP_MLOCK }, |
212380e3 AC |
93 | {0, 0} |
94 | }; | |
95 | ||
212380e3 | 96 | static CNCB serv_connect_callback; |
c6d72037 | 97 | static CNCB serv_connect_ssl_callback; |
212380e3 AC |
98 | |
99 | /* | |
100 | * hunt_server - Do the basic thing in delivering the message (command) | |
101 | * across the relays to the specific server (server) for | |
102 | * actions. | |
103 | * | |
104 | * Note: The command is a format string and *MUST* be | |
105 | * of prefixed style (e.g. ":%s COMMAND %s ..."). | |
106 | * Command can have only max 8 parameters. | |
107 | * | |
108 | * server parv[server] is the parameter identifying the | |
109 | * target server. | |
110 | * | |
111 | * *WARNING* | |
112 | * parv[server] is replaced with the pointer to the | |
113 | * real servername from the matched client (I'm lazy | |
114 | * now --msa). | |
115 | * | |
116 | * returns: (see #defines) | |
117 | */ | |
118 | int | |
119 | hunt_server(struct Client *client_p, struct Client *source_p, | |
120 | const char *command, int server, int parc, const char *parv[]) | |
121 | { | |
122 | struct Client *target_p; | |
123 | int wilds; | |
330fc5c1 | 124 | rb_dlink_node *ptr; |
212380e3 AC |
125 | const char *old; |
126 | char *new; | |
127 | ||
128 | /* | |
129 | * Assume it's me, if no server | |
130 | */ | |
131 | if(parc <= server || EmptyString(parv[server]) || | |
4d7a1ee5 | 132 | match(parv[server], me.name) || (strcmp(parv[server], me.id) == 0)) |
212380e3 AC |
133 | return (HUNTED_ISME); |
134 | ||
135 | new = LOCAL_COPY(parv[server]); | |
136 | ||
137 | /* | |
138 | * These are to pickup matches that would cause the following | |
139 | * message to go in the wrong direction while doing quick fast | |
140 | * non-matching lookups. | |
141 | */ | |
142 | if(MyClient(source_p)) | |
143 | target_p = find_named_client(new); | |
144 | else | |
145 | target_p = find_client(new); | |
146 | ||
147 | if(target_p) | |
148 | if(target_p->from == source_p->from && !MyConnect(target_p)) | |
149 | target_p = NULL; | |
150 | ||
212380e3 AC |
151 | collapse(new); |
152 | wilds = (strchr(new, '?') || strchr(new, '*')); | |
153 | ||
154 | /* | |
155 | * Again, if there are no wild cards involved in the server | |
156 | * name, use the hash lookup | |
157 | */ | |
cd300c1b | 158 | if(!target_p && wilds) |
212380e3 | 159 | { |
cd300c1b | 160 | RB_DLINK_FOREACH(ptr, global_client_list.head) |
212380e3 | 161 | { |
cd300c1b | 162 | if(match(new, ((struct Client *) (ptr->data))->name)) |
212380e3 | 163 | { |
cd300c1b JT |
164 | target_p = ptr->data; |
165 | break; | |
212380e3 AC |
166 | } |
167 | } | |
168 | } | |
169 | ||
cd300c1b JT |
170 | if(target_p && !IsRegistered(target_p)) |
171 | target_p = NULL; | |
172 | ||
212380e3 AC |
173 | if(target_p) |
174 | { | |
212380e3 AC |
175 | if(IsMe(target_p) || MyClient(target_p)) |
176 | return HUNTED_ISME; | |
177 | ||
178 | old = parv[server]; | |
179 | parv[server] = get_id(target_p, target_p); | |
180 | ||
181 | sendto_one(target_p, command, get_id(source_p, target_p), | |
182 | parv[1], parv[2], parv[3], parv[4], parv[5], parv[6], parv[7], parv[8]); | |
183 | parv[server] = old; | |
184 | return (HUNTED_PASS); | |
185 | } | |
186 | ||
95d36ef5 | 187 | if(MyClient(source_p) || !IsDigit(parv[server][0])) |
212380e3 AC |
188 | sendto_one_numeric(source_p, ERR_NOSUCHSERVER, |
189 | form_str(ERR_NOSUCHSERVER), parv[server]); | |
190 | return (HUNTED_NOSUCH); | |
191 | } | |
192 | ||
193 | /* | |
194 | * try_connections - scan through configuration and try new connections. | |
195 | * Returns the calendar time when the next call to this | |
196 | * function should be made latest. (No harm done if this | |
197 | * is called earlier or later...) | |
198 | */ | |
199 | void | |
200 | try_connections(void *unused) | |
201 | { | |
202 | struct Client *client_p; | |
203 | struct server_conf *server_p = NULL; | |
204 | struct server_conf *tmp_p; | |
205 | struct Class *cltmp; | |
330fc5c1 | 206 | rb_dlink_node *ptr; |
212380e3 AC |
207 | int connecting = FALSE; |
208 | int confrq = 0; | |
209 | time_t next = 0; | |
210 | ||
5cefa1d6 | 211 | RB_DLINK_FOREACH(ptr, server_conf_list.head) |
212380e3 AC |
212 | { |
213 | tmp_p = ptr->data; | |
214 | ||
215 | if(ServerConfIllegal(tmp_p) || !ServerConfAutoconn(tmp_p)) | |
216 | continue; | |
217 | ||
f4a759c5 VY |
218 | /* don't allow ssl connections if ssl isn't setup */ |
219 | if(ServerConfSSL(tmp_p) && (!ssl_ok || !get_ssld_count())) | |
c6d72037 VY |
220 | continue; |
221 | ||
212380e3 AC |
222 | cltmp = tmp_p->class; |
223 | ||
224 | /* | |
225 | * Skip this entry if the use of it is still on hold until | |
226 | * future. Otherwise handle this entry (and set it on hold | |
227 | * until next time). Will reset only hold times, if already | |
228 | * made one successfull connection... [this algorithm is | |
229 | * a bit fuzzy... -- msa >;) ] | |
230 | */ | |
e3354945 | 231 | if(tmp_p->hold > rb_current_time()) |
212380e3 AC |
232 | { |
233 | if(next > tmp_p->hold || next == 0) | |
234 | next = tmp_p->hold; | |
235 | continue; | |
236 | } | |
237 | ||
238 | confrq = get_con_freq(cltmp); | |
e3354945 | 239 | tmp_p->hold = rb_current_time() + confrq; |
212380e3 AC |
240 | |
241 | /* | |
242 | * Found a CONNECT config with port specified, scan clients | |
243 | * and see if this server is already connected? | |
244 | */ | |
245 | client_p = find_server(NULL, tmp_p->name); | |
246 | ||
247 | if(!client_p && (CurrUsers(cltmp) < MaxUsers(cltmp)) && !connecting) | |
248 | { | |
249 | server_p = tmp_p; | |
250 | ||
251 | /* We connect only one at time... */ | |
252 | connecting = TRUE; | |
253 | } | |
254 | ||
255 | if((next > tmp_p->hold) || (next == 0)) | |
256 | next = tmp_p->hold; | |
257 | } | |
258 | ||
259 | /* TODO: change this to set active flag to 0 when added to event! --Habeeb */ | |
260 | if(GlobalSetOptions.autoconn == 0) | |
261 | return; | |
262 | ||
263 | if(!connecting) | |
264 | return; | |
265 | ||
266 | /* move this connect entry to end.. */ | |
330fc5c1 AC |
267 | rb_dlinkDelete(&server_p->node, &server_conf_list); |
268 | rb_dlinkAddTail(server_p, &server_p->node, &server_conf_list); | |
212380e3 AC |
269 | |
270 | /* | |
271 | * We used to only print this if serv_connect() actually | |
b2f0da88 | 272 | * suceeded, but since rb_tcp_connect() can call the callback |
212380e3 AC |
273 | * immediately if there is an error, we were getting error messages |
274 | * in the wrong order. SO, we just print out the activated line, | |
275 | * and let serv_connect() / serv_connect_callback() print an | |
276 | * error afterwards if it fails. | |
277 | * -- adrian | |
278 | */ | |
212380e3 AC |
279 | sendto_realops_snomask(SNO_GENERAL, L_ALL, |
280 | "Connection to %s activated", | |
281 | server_p->name); | |
212380e3 AC |
282 | |
283 | serv_connect(server_p, 0); | |
284 | } | |
285 | ||
286 | int | |
287 | check_server(const char *name, struct Client *client_p) | |
288 | { | |
289 | struct server_conf *server_p = NULL; | |
290 | struct server_conf *tmp_p; | |
330fc5c1 | 291 | rb_dlink_node *ptr; |
212380e3 AC |
292 | int error = -1; |
293 | ||
294 | s_assert(NULL != client_p); | |
295 | if(client_p == NULL) | |
296 | return error; | |
297 | ||
298 | if(!(client_p->localClient->passwd)) | |
299 | return -2; | |
300 | ||
301 | if(strlen(name) > HOSTLEN) | |
302 | return -4; | |
303 | ||
5cefa1d6 | 304 | RB_DLINK_FOREACH(ptr, server_conf_list.head) |
212380e3 AC |
305 | { |
306 | tmp_p = ptr->data; | |
307 | ||
308 | if(ServerConfIllegal(tmp_p)) | |
309 | continue; | |
310 | ||
311 | if(!match(tmp_p->name, name)) | |
312 | continue; | |
313 | ||
314 | error = -3; | |
315 | ||
316 | /* XXX: Fix me for IPv6 */ | |
317 | /* XXX sockhost is the IPv4 ip as a string */ | |
318 | if(match(tmp_p->host, client_p->host) || | |
319 | match(tmp_p->host, client_p->sockhost)) | |
320 | { | |
321 | error = -2; | |
322 | ||
ff0cc1e6 | 323 | if(tmp_p->passwd) |
212380e3 | 324 | { |
ff0cc1e6 | 325 | if(ServerConfEncrypted(tmp_p)) |
212380e3 | 326 | { |
ff0cc1e6 AC |
327 | if(!strcmp(tmp_p->passwd, rb_crypt(client_p->localClient->passwd, |
328 | tmp_p->passwd))) | |
329 | { | |
330 | server_p = tmp_p; | |
331 | break; | |
332 | } | |
333 | else | |
334 | continue; | |
212380e3 | 335 | } |
ff0cc1e6 AC |
336 | else if(strcmp(tmp_p->passwd, client_p->localClient->passwd)) |
337 | continue; | |
212380e3 | 338 | } |
ff0cc1e6 AC |
339 | |
340 | if(tmp_p->certfp) | |
212380e3 | 341 | { |
ff0cc1e6 AC |
342 | if(!client_p->certfp || strcasecmp(tmp_p->certfp, client_p->certfp) != 0) |
343 | continue; | |
212380e3 | 344 | } |
ff0cc1e6 AC |
345 | |
346 | server_p = tmp_p; | |
347 | break; | |
212380e3 AC |
348 | } |
349 | } | |
350 | ||
351 | if(server_p == NULL) | |
352 | return error; | |
353 | ||
f4a759c5 VY |
354 | if(ServerConfSSL(server_p) && client_p->localClient->ssl_ctl == NULL) |
355 | { | |
356 | return -5; | |
c6d72037 VY |
357 | } |
358 | ||
212380e3 AC |
359 | attach_server_conf(client_p, server_p); |
360 | ||
361 | /* clear ZIP/TB if they support but we dont want them */ | |
362 | #ifdef HAVE_LIBZ | |
363 | if(!ServerConfCompressed(server_p)) | |
364 | #endif | |
365 | ClearCap(client_p, CAP_ZIP); | |
366 | ||
367 | if(!ServerConfTb(server_p)) | |
368 | ClearCap(client_p, CAP_TB); | |
369 | ||
370 | return 0; | |
371 | } | |
372 | ||
373 | /* | |
374 | * send_capabilities | |
375 | * | |
376 | * inputs - Client pointer to send to | |
377 | * - int flag of capabilities that this server has | |
378 | * output - NONE | |
379 | * side effects - send the CAPAB line to a server -orabidoo | |
380 | * | |
381 | */ | |
382 | void | |
383 | send_capabilities(struct Client *client_p, int cap_can_send) | |
384 | { | |
385 | struct Capability *cap; | |
386 | char msgbuf[BUFSIZE]; | |
387 | char *t; | |
388 | int tl; | |
389 | ||
390 | t = msgbuf; | |
391 | ||
392 | for (cap = captab; cap->name; ++cap) | |
393 | { | |
394 | if(cap->cap & cap_can_send) | |
395 | { | |
b2f0da88 | 396 | tl = rb_sprintf(t, "%s ", cap->name); |
212380e3 AC |
397 | t += tl; |
398 | } | |
399 | } | |
400 | ||
401 | t--; | |
402 | *t = '\0'; | |
403 | ||
404 | sendto_one(client_p, "CAPAB :%s", msgbuf); | |
405 | } | |
406 | ||
431a1a27 JT |
407 | static void |
408 | burst_ban(struct Client *client_p) | |
409 | { | |
410 | rb_dlink_node *ptr; | |
411 | struct ConfItem *aconf; | |
412 | const char *type, *oper; | |
413 | /* +5 for !,@,{,} and null */ | |
414 | char operbuf[NICKLEN + USERLEN + HOSTLEN + HOSTLEN + 5]; | |
415 | char *p; | |
416 | size_t melen; | |
417 | ||
418 | melen = strlen(me.name); | |
419 | RB_DLINK_FOREACH(ptr, prop_bans.head) | |
420 | { | |
421 | aconf = ptr->data; | |
422 | ||
423 | /* Skip expired stuff. */ | |
424 | if(aconf->lifetime < rb_current_time()) | |
425 | continue; | |
426 | switch(aconf->status & ~CONF_ILLEGAL) | |
427 | { | |
428 | case CONF_KILL: type = "K"; break; | |
429 | case CONF_DLINE: type = "D"; break; | |
430 | case CONF_XLINE: type = "X"; break; | |
431 | case CONF_RESV_NICK: type = "R"; break; | |
432 | case CONF_RESV_CHANNEL: type = "R"; break; | |
433 | default: | |
434 | continue; | |
435 | } | |
436 | oper = aconf->info.oper; | |
437 | if(aconf->flags & CONF_FLAGS_MYOPER) | |
438 | { | |
439 | /* Our operator{} names may not be meaningful | |
440 | * to other servers, so rewrite to our server | |
441 | * name. | |
442 | */ | |
443 | rb_strlcpy(operbuf, aconf->info.oper, sizeof buf); | |
444 | p = strrchr(operbuf, '{'); | |
ee6da53d JT |
445 | if (p != NULL && |
446 | operbuf + sizeof operbuf - p > (ptrdiff_t)(melen + 2)) | |
431a1a27 JT |
447 | { |
448 | memcpy(p + 1, me.name, melen); | |
449 | p[melen + 1] = '}'; | |
450 | p[melen + 2] = '\0'; | |
451 | oper = operbuf; | |
452 | } | |
453 | } | |
cedb7d05 | 454 | sendto_one(client_p, ":%s BAN %s %s %s %lu %d %d %s :%s%s%s", |
431a1a27 | 455 | me.id, |
431a1a27 JT |
456 | type, |
457 | aconf->user ? aconf->user : "*", aconf->host, | |
458 | (unsigned long)aconf->created, | |
459 | (int)(aconf->hold - aconf->created), | |
460 | (int)(aconf->lifetime - aconf->created), | |
461 | oper, | |
462 | aconf->passwd, | |
463 | aconf->spasswd ? "|" : "", | |
464 | aconf->spasswd ? aconf->spasswd : ""); | |
465 | } | |
466 | } | |
467 | ||
212380e3 AC |
468 | /* burst_modes_TS6() |
469 | * | |
470 | * input - client to burst to, channel name, list to burst, mode flag | |
471 | * output - | |
472 | * side effects - client is sent a list of +b, +e, or +I modes | |
473 | */ | |
474 | static void | |
475 | burst_modes_TS6(struct Client *client_p, struct Channel *chptr, | |
330fc5c1 | 476 | rb_dlink_list *list, char flag) |
212380e3 | 477 | { |
330fc5c1 | 478 | rb_dlink_node *ptr; |
212380e3 AC |
479 | struct Ban *banptr; |
480 | char *t; | |
481 | int tlen; | |
482 | int mlen; | |
483 | int cur_len; | |
484 | ||
b2f0da88 | 485 | cur_len = mlen = rb_sprintf(buf, ":%s BMASK %ld %s %c :", |
212380e3 AC |
486 | me.id, (long) chptr->channelts, chptr->chname, flag); |
487 | t = buf + mlen; | |
488 | ||
5cefa1d6 | 489 | RB_DLINK_FOREACH(ptr, list->head) |
212380e3 AC |
490 | { |
491 | banptr = ptr->data; | |
492 | ||
493 | tlen = strlen(banptr->banstr) + 1; | |
494 | ||
495 | /* uh oh */ | |
496 | if(cur_len + tlen > BUFSIZE - 3) | |
497 | { | |
498 | /* the one we're trying to send doesnt fit at all! */ | |
499 | if(cur_len == mlen) | |
500 | { | |
501 | s_assert(0); | |
502 | continue; | |
503 | } | |
504 | ||
505 | /* chop off trailing space and send.. */ | |
506 | *(t-1) = '\0'; | |
507 | sendto_one(client_p, "%s", buf); | |
508 | cur_len = mlen; | |
509 | t = buf + mlen; | |
510 | } | |
511 | ||
b2f0da88 | 512 | rb_sprintf(t, "%s ", banptr->banstr); |
212380e3 AC |
513 | t += tlen; |
514 | cur_len += tlen; | |
515 | } | |
516 | ||
517 | /* cant ever exit the loop above without having modified buf, | |
518 | * chop off trailing space and send. | |
519 | */ | |
520 | *(t-1) = '\0'; | |
521 | sendto_one(client_p, "%s", buf); | |
522 | } | |
523 | ||
212380e3 AC |
524 | /* |
525 | * burst_TS6 | |
526 | * | |
527 | * inputs - client (server) to send nick towards | |
528 | * - client to send nick for | |
529 | * output - NONE | |
530 | * side effects - NICK message is sent towards given client_p | |
531 | */ | |
532 | static void | |
533 | burst_TS6(struct Client *client_p) | |
534 | { | |
535 | static char ubuf[12]; | |
536 | struct Client *target_p; | |
537 | struct Channel *chptr; | |
538 | struct membership *msptr; | |
539 | hook_data_client hclientinfo; | |
540 | hook_data_channel hchaninfo; | |
330fc5c1 AC |
541 | rb_dlink_node *ptr; |
542 | rb_dlink_node *uptr; | |
212380e3 AC |
543 | char *t; |
544 | int tlen, mlen; | |
545 | int cur_len = 0; | |
546 | ||
547 | hclientinfo.client = hchaninfo.client = client_p; | |
548 | ||
5cefa1d6 | 549 | RB_DLINK_FOREACH(ptr, global_client_list.head) |
212380e3 AC |
550 | { |
551 | target_p = ptr->data; | |
552 | ||
553 | if(!IsPerson(target_p)) | |
554 | continue; | |
555 | ||
556 | send_umode(NULL, target_p, 0, 0, ubuf); | |
557 | if(!*ubuf) | |
558 | { | |
559 | ubuf[0] = '+'; | |
560 | ubuf[1] = '\0'; | |
561 | } | |
562 | ||
bea2295f | 563 | if(IsCapable(client_p, CAP_EUID)) |
212380e3 AC |
564 | sendto_one(client_p, ":%s EUID %s %d %ld %s %s %s %s %s %s %s :%s", |
565 | target_p->servptr->id, target_p->name, | |
566 | target_p->hopcount + 1, | |
567 | (long) target_p->tsinfo, ubuf, | |
568 | target_p->username, target_p->host, | |
569 | IsIPSpoof(target_p) ? "0" : target_p->sockhost, | |
570 | target_p->id, | |
571 | IsDynSpoof(target_p) ? target_p->orighost : "*", | |
572 | EmptyString(target_p->user->suser) ? "*" : target_p->user->suser, | |
573 | target_p->info); | |
bea2295f | 574 | else |
212380e3 AC |
575 | sendto_one(client_p, ":%s UID %s %d %ld %s %s %s %s %s :%s", |
576 | target_p->servptr->id, target_p->name, | |
577 | target_p->hopcount + 1, | |
578 | (long) target_p->tsinfo, ubuf, | |
579 | target_p->username, target_p->host, | |
580 | IsIPSpoof(target_p) ? "0" : target_p->sockhost, | |
581 | target_p->id, target_p->info); | |
bea2295f | 582 | |
8eda114a JT |
583 | if(!EmptyString(target_p->certfp)) |
584 | sendto_one(client_p, ":%s ENCAP * CERTFP :%s", | |
585 | use_id(target_p), target_p->certfp); | |
586 | ||
bea2295f | 587 | if(!IsCapable(client_p, CAP_EUID)) |
212380e3 AC |
588 | { |
589 | if(IsDynSpoof(target_p)) | |
590 | sendto_one(client_p, ":%s ENCAP * REALHOST %s", | |
591 | use_id(target_p), target_p->orighost); | |
592 | if(!EmptyString(target_p->user->suser)) | |
593 | sendto_one(client_p, ":%s ENCAP * LOGIN %s", | |
594 | use_id(target_p), target_p->user->suser); | |
595 | } | |
596 | ||
c127b45b | 597 | if(ConfigFileEntry.burst_away && !EmptyString(target_p->user->away)) |
212380e3 AC |
598 | sendto_one(client_p, ":%s AWAY :%s", |
599 | use_id(target_p), | |
c127b45b | 600 | target_p->user->away); |
212380e3 AC |
601 | |
602 | hclientinfo.target = target_p; | |
603 | call_hook(h_burst_client, &hclientinfo); | |
604 | } | |
605 | ||
5cefa1d6 | 606 | RB_DLINK_FOREACH(ptr, global_channel_list.head) |
212380e3 AC |
607 | { |
608 | chptr = ptr->data; | |
609 | ||
610 | if(*chptr->chname != '#') | |
611 | continue; | |
612 | ||
b2f0da88 | 613 | cur_len = mlen = rb_sprintf(buf, ":%s SJOIN %ld %s %s :", me.id, |
212380e3 AC |
614 | (long) chptr->channelts, chptr->chname, |
615 | channel_modes(chptr, client_p)); | |
616 | ||
617 | t = buf + mlen; | |
618 | ||
5cefa1d6 | 619 | RB_DLINK_FOREACH(uptr, chptr->members.head) |
212380e3 AC |
620 | { |
621 | msptr = uptr->data; | |
622 | ||
623 | tlen = strlen(use_id(msptr->client_p)) + 1; | |
624 | if(is_chanop(msptr)) | |
625 | tlen++; | |
626 | if(is_voiced(msptr)) | |
627 | tlen++; | |
628 | ||
629 | if(cur_len + tlen >= BUFSIZE - 3) | |
630 | { | |
631 | *(t-1) = '\0'; | |
632 | sendto_one(client_p, "%s", buf); | |
633 | cur_len = mlen; | |
634 | t = buf + mlen; | |
635 | } | |
636 | ||
b2f0da88 | 637 | rb_sprintf(t, "%s%s ", find_channel_status(msptr, 1), |
212380e3 AC |
638 | use_id(msptr->client_p)); |
639 | ||
640 | cur_len += tlen; | |
641 | t += tlen; | |
642 | } | |
643 | ||
330fc5c1 | 644 | if (rb_dlink_list_length(&chptr->members) > 0) |
212380e3 AC |
645 | { |
646 | /* remove trailing space */ | |
647 | *(t-1) = '\0'; | |
648 | } | |
649 | sendto_one(client_p, "%s", buf); | |
650 | ||
330fc5c1 | 651 | if(rb_dlink_list_length(&chptr->banlist) > 0) |
212380e3 AC |
652 | burst_modes_TS6(client_p, chptr, &chptr->banlist, 'b'); |
653 | ||
654 | if(IsCapable(client_p, CAP_EX) && | |
330fc5c1 | 655 | rb_dlink_list_length(&chptr->exceptlist) > 0) |
212380e3 AC |
656 | burst_modes_TS6(client_p, chptr, &chptr->exceptlist, 'e'); |
657 | ||
658 | if(IsCapable(client_p, CAP_IE) && | |
330fc5c1 | 659 | rb_dlink_list_length(&chptr->invexlist) > 0) |
212380e3 AC |
660 | burst_modes_TS6(client_p, chptr, &chptr->invexlist, 'I'); |
661 | ||
330fc5c1 | 662 | if(rb_dlink_list_length(&chptr->quietlist) > 0) |
212380e3 AC |
663 | burst_modes_TS6(client_p, chptr, &chptr->quietlist, 'q'); |
664 | ||
665 | if(IsCapable(client_p, CAP_TB) && chptr->topic != NULL) | |
666 | sendto_one(client_p, ":%s TB %s %ld %s%s:%s", | |
667 | me.id, chptr->chname, (long) chptr->topic_time, | |
668 | ConfigChannel.burst_topicwho ? chptr->topic_info : "", | |
669 | ConfigChannel.burst_topicwho ? " " : "", | |
670 | chptr->topic); | |
671 | ||
084ecbe0 | 672 | if(IsCapable(client_p, CAP_MLOCK)) |
6b8db2da | 673 | sendto_one(client_p, ":%s MLOCK %ld %s :%s", |
084ecbe0 | 674 | me.id, (long) chptr->channelts, chptr->chname, |
6b8db2da | 675 | EmptyString(chptr->mode_lock) ? "" : chptr->mode_lock); |
084ecbe0 | 676 | |
212380e3 AC |
677 | hchaninfo.chptr = chptr; |
678 | call_hook(h_burst_channel, &hchaninfo); | |
679 | } | |
680 | ||
681 | hclientinfo.target = NULL; | |
682 | call_hook(h_burst_finished, &hclientinfo); | |
683 | } | |
684 | ||
685 | /* | |
686 | * show_capabilities - show current server capabilities | |
687 | * | |
688 | * inputs - pointer to an struct Client | |
689 | * output - pointer to static string | |
690 | * side effects - build up string representing capabilities of server listed | |
691 | */ | |
692 | const char * | |
693 | show_capabilities(struct Client *target_p) | |
694 | { | |
695 | static char msgbuf[BUFSIZE]; | |
696 | struct Capability *cap; | |
212380e3 | 697 | |
f4a759c5 VY |
698 | if(has_id(target_p)) |
699 | rb_strlcpy(msgbuf, " TS6", sizeof(msgbuf)); | |
f4a759c5 VY |
700 | |
701 | if(IsSSL(target_p)) | |
702 | rb_strlcat(msgbuf, " SSL", sizeof(msgbuf)); | |
212380e3 AC |
703 | |
704 | if(!IsServer(target_p) || !target_p->serv->caps) /* short circuit if no caps */ | |
f4a759c5 | 705 | return msgbuf + 1; |
212380e3 AC |
706 | |
707 | for (cap = captab; cap->cap; ++cap) | |
708 | { | |
709 | if(cap->cap & target_p->serv->caps) | |
f4a759c5 | 710 | rb_snprintf_append(msgbuf, sizeof(msgbuf), " %s", cap->name); |
212380e3 AC |
711 | } |
712 | ||
f4a759c5 | 713 | return msgbuf + 1; |
212380e3 AC |
714 | } |
715 | ||
716 | /* | |
717 | * server_estab | |
718 | * | |
719 | * inputs - pointer to a struct Client | |
720 | * output - | |
721 | * side effects - | |
722 | */ | |
723 | int | |
724 | server_estab(struct Client *client_p) | |
725 | { | |
726 | struct Client *target_p; | |
727 | struct server_conf *server_p; | |
728 | hook_data_client hdata; | |
729 | char *host; | |
330fc5c1 | 730 | rb_dlink_node *ptr; |
6c528b8e | 731 | char note[HOSTLEN + 15]; |
212380e3 AC |
732 | |
733 | s_assert(NULL != client_p); | |
734 | if(client_p == NULL) | |
735 | return -1; | |
212380e3 AC |
736 | |
737 | host = client_p->name; | |
738 | ||
739 | if((server_p = client_p->localClient->att_sconf) == NULL) | |
740 | { | |
741 | /* This shouldn't happen, better tell the ops... -A1kmm */ | |
742 | sendto_realops_snomask(SNO_GENERAL, is_remote_connect(client_p) ? L_NETWIDE : L_ALL, | |
743 | "Warning: Lost connect{} block for server %s!", host); | |
744 | return exit_client(client_p, client_p, client_p, "Lost connect{} block!"); | |
745 | } | |
746 | ||
747 | /* We shouldn't have to check this, it should already done before | |
748 | * server_estab is called. -A1kmm | |
749 | */ | |
750 | if(client_p->localClient->passwd) | |
751 | { | |
752 | memset(client_p->localClient->passwd, 0, strlen(client_p->localClient->passwd)); | |
637c4932 | 753 | rb_free(client_p->localClient->passwd); |
212380e3 AC |
754 | client_p->localClient->passwd = NULL; |
755 | } | |
756 | ||
757 | /* Its got identd , since its a server */ | |
758 | SetGotId(client_p); | |
759 | ||
760 | /* If there is something in the serv_list, it might be this | |
761 | * connecting server.. | |
762 | */ | |
763 | if(!ServerInfo.hub && serv_list.head) | |
764 | { | |
765 | if(client_p != serv_list.head->data || serv_list.head->next) | |
766 | { | |
47adde3d | 767 | ServerStats.is_ref++; |
212380e3 AC |
768 | sendto_one(client_p, "ERROR :I'm a leaf not a hub"); |
769 | return exit_client(client_p, client_p, client_p, "I'm a leaf"); | |
770 | } | |
771 | } | |
772 | ||
773 | if(IsUnknown(client_p)) | |
774 | { | |
ff0cc1e6 AC |
775 | /* the server may be linking based on certificate fingerprint now. --nenolod */ |
776 | sendto_one(client_p, "PASS %s TS %d :%s", | |
777 | EmptyString(server_p->spasswd) ? "*" : server_p->spasswd, TS_CURRENT, me.id); | |
212380e3 AC |
778 | |
779 | /* pass info to new server */ | |
780 | send_capabilities(client_p, default_server_capabs | |
781 | | (ServerConfCompressed(server_p) ? CAP_ZIP_SUPPORTED : 0) | |
782 | | (ServerConfTb(server_p) ? CAP_TB : 0)); | |
783 | ||
784 | sendto_one(client_p, "SERVER %s 1 :%s%s", | |
785 | me.name, | |
786 | ConfigServerHide.hidden ? "(H) " : "", | |
787 | (me.info[0]) ? (me.info) : "IRCers United"); | |
788 | } | |
789 | ||
6c528b8e | 790 | if(!rb_set_buffers(client_p->localClient->F, READBUF_SIZE)) |
825ddf13 | 791 | ilog_error("rb_set_buffers failed for server"); |
212380e3 | 792 | |
c6d72037 | 793 | /* Enable compression now */ |
f4a759c5 VY |
794 | if(IsCapable(client_p, CAP_ZIP)) |
795 | { | |
796 | start_zlib_session(client_p); | |
797 | } | |
8982edb0 | 798 | sendto_one(client_p, "SVINFO %d %d 0 :%ld", TS_CURRENT, TS_MIN, (long int)rb_current_time()); |
212380e3 AC |
799 | |
800 | client_p->servptr = &me; | |
801 | ||
802 | if(IsAnyDead(client_p)) | |
803 | return CLIENT_EXITED; | |
804 | ||
805 | SetServer(client_p); | |
806 | ||
807 | /* Update the capability combination usage counts */ | |
808 | set_chcap_usage_counts(client_p); | |
809 | ||
330fc5c1 | 810 | rb_dlinkAdd(client_p, &client_p->lnode, &me.serv->servers); |
330fc5c1 AC |
811 | rb_dlinkMoveNode(&client_p->localClient->tnode, &unknown_list, &serv_list); |
812 | rb_dlinkAddTailAlloc(client_p, &global_serv_list); | |
212380e3 AC |
813 | |
814 | if(has_id(client_p)) | |
815 | add_to_id_hash(client_p->id, client_p); | |
816 | ||
817 | add_to_client_hash(client_p->name, client_p); | |
818 | /* doesnt duplicate client_p->serv if allocated this struct already */ | |
819 | make_server(client_p); | |
212380e3 AC |
820 | |
821 | client_p->serv->caps = client_p->localClient->caps; | |
822 | ||
823 | if(client_p->localClient->fullcaps) | |
824 | { | |
47a03750 | 825 | client_p->serv->fullcaps = rb_strdup(client_p->localClient->fullcaps); |
637c4932 | 826 | rb_free(client_p->localClient->fullcaps); |
212380e3 AC |
827 | client_p->localClient->fullcaps = NULL; |
828 | } | |
829 | ||
994544c2 | 830 | client_p->serv->nameinfo = scache_connect(client_p->name, client_p->info, IsHidden(client_p)); |
e3354945 | 831 | client_p->localClient->firsttime = rb_current_time(); |
212380e3 AC |
832 | /* fixing eob timings.. -gnp */ |
833 | ||
330fc5c1 | 834 | if((rb_dlink_list_length(&lclient_list) + rb_dlink_list_length(&serv_list)) > |
2f15f871 | 835 | (unsigned long)MaxConnectionCount) |
330fc5c1 AC |
836 | MaxConnectionCount = rb_dlink_list_length(&lclient_list) + |
837 | rb_dlink_list_length(&serv_list); | |
2f15f871 | 838 | |
212380e3 AC |
839 | /* Show the real host/IP to admins */ |
840 | sendto_realops_snomask(SNO_GENERAL, L_ALL, | |
841 | "Link with %s established: (%s) link", | |
b3ebc7ab | 842 | client_p->name, |
212380e3 AC |
843 | show_capabilities(client_p)); |
844 | ||
845 | ilog(L_SERVER, "Link with %s established: (%s) link", | |
846 | log_client_name(client_p, SHOW_IP), show_capabilities(client_p)); | |
847 | ||
848 | hdata.client = &me; | |
849 | hdata.target = client_p; | |
850 | call_hook(h_server_introduced, &hdata); | |
851 | ||
f4a759c5 | 852 | rb_snprintf(note, sizeof(note), "Server: %s", client_p->name); |
c6d72037 | 853 | rb_note(client_p->localClient->F, note); |
212380e3 AC |
854 | |
855 | /* | |
856 | ** Old sendto_serv_but_one() call removed because we now | |
857 | ** need to send different names to different servers | |
858 | ** (domain name matching) Send new server to other servers. | |
859 | */ | |
5cefa1d6 | 860 | RB_DLINK_FOREACH(ptr, serv_list.head) |
212380e3 AC |
861 | { |
862 | target_p = ptr->data; | |
863 | ||
864 | if(target_p == client_p) | |
865 | continue; | |
866 | ||
867 | if(has_id(target_p) && has_id(client_p)) | |
868 | { | |
869 | sendto_one(target_p, ":%s SID %s 2 %s :%s%s", | |
870 | me.id, client_p->name, client_p->id, | |
871 | IsHidden(client_p) ? "(H) " : "", client_p->info); | |
872 | ||
873 | if(IsCapable(target_p, CAP_ENCAP) && | |
874 | !EmptyString(client_p->serv->fullcaps)) | |
875 | sendto_one(target_p, ":%s ENCAP * GCAP :%s", | |
876 | client_p->id, client_p->serv->fullcaps); | |
877 | } | |
878 | else | |
879 | { | |
880 | sendto_one(target_p, ":%s SERVER %s 2 :%s%s", | |
881 | me.name, client_p->name, | |
882 | IsHidden(client_p) ? "(H) " : "", client_p->info); | |
883 | ||
884 | if(IsCapable(target_p, CAP_ENCAP) && | |
885 | !EmptyString(client_p->serv->fullcaps)) | |
886 | sendto_one(target_p, ":%s ENCAP * GCAP :%s", | |
887 | client_p->name, client_p->serv->fullcaps); | |
888 | } | |
889 | } | |
890 | ||
891 | /* | |
892 | ** Pass on my client information to the new server | |
893 | ** | |
894 | ** First, pass only servers (idea is that if the link gets | |
895 | ** cancelled beacause the server was already there, | |
896 | ** there are no NICK's to be cancelled...). Of course, | |
897 | ** if cancellation occurs, all this info is sent anyway, | |
898 | ** and I guess the link dies when a read is attempted...? --msa | |
899 | ** | |
900 | ** Note: Link cancellation to occur at this point means | |
901 | ** that at least two servers from my fragment are building | |
902 | ** up connection this other fragment at the same time, it's | |
903 | ** a race condition, not the normal way of operation... | |
904 | ** | |
905 | ** ALSO NOTE: using the get_client_name for server names-- | |
906 | ** see previous *WARNING*!!! (Also, original inpath | |
907 | ** is destroyed...) | |
908 | */ | |
5cefa1d6 | 909 | RB_DLINK_FOREACH(ptr, global_serv_list.head) |
212380e3 AC |
910 | { |
911 | target_p = ptr->data; | |
912 | ||
913 | /* target_p->from == target_p for target_p == client_p */ | |
914 | if(IsMe(target_p) || target_p->from == client_p) | |
915 | continue; | |
916 | ||
917 | /* presumption, if target has an id, so does its uplink */ | |
918 | if(has_id(client_p) && has_id(target_p)) | |
919 | sendto_one(client_p, ":%s SID %s %d %s :%s%s", | |
66c8fdd2 | 920 | target_p->servptr->id, target_p->name, |
212380e3 AC |
921 | target_p->hopcount + 1, target_p->id, |
922 | IsHidden(target_p) ? "(H) " : "", target_p->info); | |
923 | else | |
924 | sendto_one(client_p, ":%s SERVER %s %d :%s%s", | |
66c8fdd2 | 925 | target_p->servptr->name, |
212380e3 AC |
926 | target_p->name, target_p->hopcount + 1, |
927 | IsHidden(target_p) ? "(H) " : "", target_p->info); | |
928 | ||
929 | if(IsCapable(client_p, CAP_ENCAP) && | |
930 | !EmptyString(target_p->serv->fullcaps)) | |
931 | sendto_one(client_p, ":%s ENCAP * GCAP :%s", | |
932 | get_id(target_p, client_p), | |
933 | target_p->serv->fullcaps); | |
934 | } | |
935 | ||
431a1a27 JT |
936 | if(IsCapable(client_p, CAP_BAN)) |
937 | burst_ban(client_p); | |
938 | ||
7bb8c655 | 939 | burst_TS6(client_p); |
212380e3 AC |
940 | |
941 | /* Always send a PING after connect burst is done */ | |
942 | sendto_one(client_p, "PING :%s", get_id(&me, client_p)); | |
943 | ||
944 | free_pre_client(client_p); | |
945 | ||
0bd120ed | 946 | send_pop_queue(client_p); |
212380e3 AC |
947 | |
948 | return 0; | |
212380e3 AC |
949 | } |
950 | ||
951 | /* | |
952 | * New server connection code | |
953 | * Based upon the stuff floating about in s_bsd.c | |
954 | * -- adrian | |
955 | */ | |
956 | ||
abe5dd20 JT |
957 | static int |
958 | serv_connect_resolved(struct Client *client_p) | |
959 | { | |
960 | struct rb_sockaddr_storage myipnum; | |
961 | char vhoststr[HOSTIPLEN]; | |
962 | struct server_conf *server_p; | |
963 | uint16_t port; | |
964 | ||
965 | if((server_p = client_p->localClient->att_sconf) == NULL) | |
966 | { | |
967 | sendto_realops_snomask(SNO_GENERAL, is_remote_connect(client_p) ? L_NETWIDE : L_ALL, "Lost connect{} block for %s", | |
b3ebc7ab | 968 | client_p->name); |
abe5dd20 JT |
969 | exit_client(client_p, client_p, &me, "Lost connect{} block"); |
970 | return 0; | |
971 | } | |
972 | ||
973 | #ifdef RB_IPV6 | |
974 | if(client_p->localClient->ip.ss_family == AF_INET6) | |
975 | port = ntohs(((struct sockaddr_in6 *)&client_p->localClient->ip)->sin6_port); | |
976 | else | |
977 | #endif | |
978 | port = ntohs(((struct sockaddr_in *)&client_p->localClient->ip)->sin_port); | |
979 | ||
980 | if(ServerConfVhosted(server_p)) | |
981 | { | |
982 | memcpy(&myipnum, &server_p->my_ipnum, sizeof(myipnum)); | |
983 | ((struct sockaddr_in *)&myipnum)->sin_port = 0; | |
984 | myipnum.ss_family = server_p->aftype; | |
985 | ||
986 | } | |
987 | else if(server_p->aftype == AF_INET && ServerInfo.specific_ipv4_vhost) | |
988 | { | |
989 | memcpy(&myipnum, &ServerInfo.ip, sizeof(myipnum)); | |
990 | ((struct sockaddr_in *)&myipnum)->sin_port = 0; | |
991 | myipnum.ss_family = AF_INET; | |
992 | SET_SS_LEN(&myipnum, sizeof(struct sockaddr_in)); | |
993 | } | |
994 | ||
995 | #ifdef RB_IPV6 | |
996 | else if((server_p->aftype == AF_INET6) && ServerInfo.specific_ipv6_vhost) | |
997 | { | |
998 | memcpy(&myipnum, &ServerInfo.ip6, sizeof(myipnum)); | |
999 | ((struct sockaddr_in6 *)&myipnum)->sin6_port = 0; | |
1000 | myipnum.ss_family = AF_INET6; | |
1001 | SET_SS_LEN(&myipnum, sizeof(struct sockaddr_in6)); | |
1002 | } | |
1003 | #endif | |
1004 | else | |
1005 | { | |
1006 | /* log */ | |
1007 | ilog(L_SERVER, "Connecting to %s[%s] port %d (%s)", client_p->name, client_p->sockhost, port, | |
1008 | #ifdef RB_IPV6 | |
1009 | server_p->aftype == AF_INET6 ? "IPv6" : | |
1010 | #endif | |
1011 | (server_p->aftype == AF_INET ? "IPv4" : "?")); | |
1012 | ||
f4a759c5 VY |
1013 | if(ServerConfSSL(server_p)) |
1014 | { | |
1015 | rb_connect_tcp(client_p->localClient->F, (struct sockaddr *)&client_p->localClient->ip, | |
1016 | NULL, 0, serv_connect_ssl_callback, | |
1017 | client_p, ConfigFileEntry.connect_timeout); | |
1018 | } | |
1019 | else | |
1020 | rb_connect_tcp(client_p->localClient->F, (struct sockaddr *)&client_p->localClient->ip, | |
1021 | NULL, 0, serv_connect_callback, | |
c6d72037 | 1022 | client_p, ConfigFileEntry.connect_timeout); |
abe5dd20 JT |
1023 | return 1; |
1024 | } | |
1025 | ||
1026 | /* log */ | |
caa4d9d2 | 1027 | rb_inet_ntop_sock((struct sockaddr *)&myipnum, vhoststr, sizeof vhoststr); |
abe5dd20 JT |
1028 | ilog(L_SERVER, "Connecting to %s[%s] port %d (%s) (vhost %s)", client_p->name, client_p->sockhost, port, |
1029 | #ifdef RB_IPV6 | |
1030 | server_p->aftype == AF_INET6 ? "IPv6" : | |
1031 | #endif | |
1032 | (server_p->aftype == AF_INET ? "IPv4" : "?"), vhoststr); | |
1033 | ||
1034 | ||
f4a759c5 VY |
1035 | if(ServerConfSSL(server_p)) |
1036 | rb_connect_tcp(client_p->localClient->F, (struct sockaddr *)&client_p->localClient->ip, | |
1037 | (struct sockaddr *) &myipnum, | |
1038 | GET_SS_LEN(&myipnum), serv_connect_ssl_callback, client_p, | |
1039 | ConfigFileEntry.connect_timeout); | |
1040 | else | |
1041 | rb_connect_tcp(client_p->localClient->F, (struct sockaddr *)&client_p->localClient->ip, | |
1042 | (struct sockaddr *) &myipnum, | |
1043 | GET_SS_LEN(&myipnum), serv_connect_callback, client_p, | |
c6d72037 | 1044 | ConfigFileEntry.connect_timeout); |
abe5dd20 JT |
1045 | |
1046 | return 1; | |
1047 | } | |
1048 | ||
1049 | static void | |
1050 | serv_connect_dns_callback(void *vptr, struct DNSReply *reply) | |
1051 | { | |
1052 | struct Client *client_p = vptr; | |
1053 | uint16_t port; | |
1054 | ||
1055 | rb_free(client_p->localClient->dnsquery); | |
1056 | client_p->localClient->dnsquery = NULL; | |
1057 | ||
1058 | if (reply == NULL) | |
1059 | { | |
1060 | sendto_realops_snomask(SNO_GENERAL, is_remote_connect(client_p) ? L_NETWIDE : L_ALL, "Cannot resolve hostname for %s", | |
b3ebc7ab | 1061 | client_p->name); |
abe5dd20 JT |
1062 | ilog(L_SERVER, "Cannot resolve hostname for %s", |
1063 | log_client_name(client_p, HIDE_IP)); | |
1064 | exit_client(client_p, client_p, &me, "Cannot resolve hostname"); | |
1065 | return; | |
1066 | } | |
1067 | #ifdef RB_IPV6 | |
1068 | if(reply->addr.ss_family == AF_INET6) | |
1069 | port = ((struct sockaddr_in6 *)&client_p->localClient->ip)->sin6_port; | |
1070 | else | |
1071 | #endif | |
1072 | port = ((struct sockaddr_in *)&client_p->localClient->ip)->sin_port; | |
1073 | memcpy(&client_p->localClient->ip, &reply->addr, sizeof(client_p->localClient->ip)); | |
1074 | #ifdef RB_IPV6 | |
1075 | if(reply->addr.ss_family == AF_INET6) | |
1076 | ((struct sockaddr_in6 *)&client_p->localClient->ip)->sin6_port = port; | |
1077 | else | |
1078 | #endif | |
1079 | ((struct sockaddr_in *)&client_p->localClient->ip)->sin_port = port; | |
1080 | /* Set sockhost properly now -- jilles */ | |
caa4d9d2 | 1081 | rb_inet_ntop_sock((struct sockaddr *)&client_p->localClient->ip, |
abe5dd20 JT |
1082 | client_p->sockhost, sizeof client_p->sockhost); |
1083 | serv_connect_resolved(client_p); | |
1084 | } | |
1085 | ||
212380e3 AC |
1086 | /* |
1087 | * serv_connect() - initiate a server connection | |
1088 | * | |
1089 | * inputs - pointer to conf | |
1090 | * - pointer to client doing the connet | |
1091 | * output - | |
1092 | * side effects - | |
1093 | * | |
1094 | * This code initiates a connection to a server. It first checks to make | |
1095 | * sure the given server exists. If this is the case, it creates a socket, | |
1096 | * creates a client, saves the socket information in the client, and | |
b2f0da88 | 1097 | * initiates a connection to the server through rb_connect_tcp(). The |
212380e3 AC |
1098 | * completion of this goes through serv_completed_connection(). |
1099 | * | |
1100 | * We return 1 if the connection is attempted, since we don't know whether | |
1101 | * it suceeded or not, and 0 if it fails in here somewhere. | |
1102 | */ | |
1103 | int | |
1104 | serv_connect(struct server_conf *server_p, struct Client *by) | |
1105 | { | |
1106 | struct Client *client_p; | |
abe5dd20 | 1107 | struct rb_sockaddr_storage theiripnum; |
6c528b8e | 1108 | rb_fde_t *F; |
6c528b8e | 1109 | char note[HOSTLEN + 10]; |
212380e3 AC |
1110 | |
1111 | s_assert(server_p != NULL); | |
1112 | if(server_p == NULL) | |
1113 | return 0; | |
1114 | ||
1115 | /* | |
1116 | * Make sure this server isn't already connected | |
1117 | */ | |
1118 | if((client_p = find_server(NULL, server_p->name))) | |
1119 | { | |
1120 | sendto_realops_snomask(SNO_GENERAL, L_ALL, | |
1121 | "Server %s already present from %s", | |
b3ebc7ab | 1122 | server_p->name, client_p->name); |
212380e3 AC |
1123 | if(by && IsPerson(by) && !MyClient(by)) |
1124 | sendto_one_notice(by, ":Server %s already present from %s", | |
b3ebc7ab | 1125 | server_p->name, client_p->name); |
212380e3 AC |
1126 | return 0; |
1127 | } | |
1128 | ||
1129 | /* create a socket for the server connection */ | |
75c58138 | 1130 | if((F = rb_socket(server_p->aftype, SOCK_STREAM, 0, NULL)) == NULL) |
212380e3 | 1131 | { |
825ddf13 | 1132 | ilog_error("opening a stream socket"); |
212380e3 AC |
1133 | return 0; |
1134 | } | |
1135 | ||
6c528b8e JT |
1136 | rb_snprintf(note, sizeof note, "Server: %s", server_p->name); |
1137 | rb_note(F, note); | |
212380e3 AC |
1138 | |
1139 | /* Create a local client */ | |
1140 | client_p = make_client(NULL); | |
1141 | ||
1142 | /* Copy in the server, hostname, fd | |
1143 | * The sockhost may be a hostname, this will be corrected later | |
1144 | * -- jilles | |
1145 | */ | |
f427c8b0 VY |
1146 | rb_strlcpy(client_p->name, server_p->name, sizeof(client_p->name)); |
1147 | rb_strlcpy(client_p->host, server_p->host, sizeof(client_p->host)); | |
1148 | rb_strlcpy(client_p->sockhost, server_p->host, sizeof(client_p->sockhost)); | |
6c528b8e | 1149 | client_p->localClient->F = F; |
c6d72037 | 1150 | add_to_cli_fd_hash(client_p); |
212380e3 AC |
1151 | |
1152 | /* | |
1153 | * Set up the initial server evilness, ripped straight from | |
1154 | * connect_server(), so don't blame me for it being evil. | |
1155 | * -- adrian | |
1156 | */ | |
1157 | ||
6c528b8e | 1158 | if(!rb_set_buffers(client_p->localClient->F, READBUF_SIZE)) |
212380e3 | 1159 | { |
825ddf13 | 1160 | ilog_error("setting the buffer size for a server connection"); |
212380e3 AC |
1161 | } |
1162 | ||
1163 | /* | |
1164 | * Attach config entries to client here rather than in | |
1165 | * serv_connect_callback(). This to avoid null pointer references. | |
1166 | */ | |
1167 | attach_server_conf(client_p, server_p); | |
1168 | ||
1169 | /* | |
1170 | * at this point we have a connection in progress and C/N lines | |
1171 | * attached to the client, the socket info should be saved in the | |
1172 | * client and it should either be resolved or have a valid address. | |
1173 | * | |
1174 | * The socket has been connected or connect is in progress. | |
1175 | */ | |
1176 | make_server(client_p); | |
1177 | if(by && IsPerson(by)) | |
1178 | { | |
1179 | strcpy(client_p->serv->by, by->name); | |
1180 | if(client_p->serv->user) | |
1181 | free_user(client_p->serv->user, NULL); | |
1182 | client_p->serv->user = by->user; | |
1183 | by->user->refcnt++; | |
1184 | } | |
1185 | else | |
1186 | { | |
1187 | strcpy(client_p->serv->by, "AutoConn."); | |
1188 | if(client_p->serv->user) | |
1189 | free_user(client_p->serv->user, NULL); | |
1190 | client_p->serv->user = NULL; | |
1191 | } | |
212380e3 | 1192 | SetConnecting(client_p); |
330fc5c1 | 1193 | rb_dlinkAddTail(client_p, &client_p->node, &global_client_list); |
212380e3 | 1194 | |
abe5dd20 | 1195 | if (rb_inet_pton_sock(server_p->host, (struct sockaddr *)&theiripnum) > 0) |
212380e3 | 1196 | { |
abe5dd20 | 1197 | memcpy(&client_p->localClient->ip, &theiripnum, sizeof(client_p->localClient->ip)); |
ccda6e3f | 1198 | #ifdef RB_IPV6 |
abe5dd20 JT |
1199 | if(theiripnum.ss_family == AF_INET6) |
1200 | ((struct sockaddr_in6 *)&client_p->localClient->ip)->sin6_port = htons(server_p->port); | |
1201 | else | |
212380e3 | 1202 | #endif |
abe5dd20 JT |
1203 | ((struct sockaddr_in *)&client_p->localClient->ip)->sin_port = htons(server_p->port); |
1204 | ||
1205 | return serv_connect_resolved(client_p); | |
1206 | } | |
212380e3 AC |
1207 | else |
1208 | { | |
ccda6e3f | 1209 | #ifdef RB_IPV6 |
abe5dd20 JT |
1210 | if(theiripnum.ss_family == AF_INET6) |
1211 | ((struct sockaddr_in6 *)&client_p->localClient->ip)->sin6_port = htons(server_p->port); | |
1212 | else | |
17648928 | 1213 | #endif |
abe5dd20 | 1214 | ((struct sockaddr_in *)&client_p->localClient->ip)->sin_port = htons(server_p->port); |
17648928 | 1215 | |
abe5dd20 JT |
1216 | client_p->localClient->dnsquery = rb_malloc(sizeof(struct DNSQuery)); |
1217 | client_p->localClient->dnsquery->ptr = client_p; | |
1218 | client_p->localClient->dnsquery->callback = serv_connect_dns_callback; | |
1219 | gethost_byname_type(server_p->host, client_p->localClient->dnsquery, | |
ccda6e3f | 1220 | #ifdef RB_IPV6 |
abe5dd20 | 1221 | server_p->aftype == AF_INET6 ? T_AAAA : |
17648928 | 1222 | #endif |
abe5dd20 JT |
1223 | T_A); |
1224 | return 1; | |
1225 | } | |
212380e3 AC |
1226 | } |
1227 | ||
f4a759c5 VY |
1228 | static void |
1229 | serv_connect_ssl_callback(rb_fde_t *F, int status, void *data) | |
1230 | { | |
1231 | struct Client *client_p = data; | |
1232 | rb_fde_t *xF[2]; | |
9ec51326 | 1233 | rb_connect_sockaddr(F, (struct sockaddr *)&client_p->localClient->ip, sizeof(client_p->localClient->ip)); |
f4a759c5 VY |
1234 | if(status != RB_OK) |
1235 | { | |
9ec51326 JT |
1236 | /* Print error message, just like non-SSL. */ |
1237 | serv_connect_callback(F, status, data); | |
f4a759c5 VY |
1238 | return; |
1239 | } | |
eda22d87 JT |
1240 | if(rb_socketpair(AF_UNIX, SOCK_STREAM, 0, &xF[0], &xF[1], "Outgoing ssld connection") == -1) |
1241 | { | |
1242 | ilog_error("rb_socketpair failed for server"); | |
1243 | serv_connect_callback(F, RB_ERROR, data); | |
1244 | return; | |
1245 | ||
1246 | } | |
f4a759c5 VY |
1247 | del_from_cli_fd_hash(client_p); |
1248 | client_p->localClient->F = xF[0]; | |
1249 | add_to_cli_fd_hash(client_p); | |
1250 | ||
1251 | client_p->localClient->ssl_ctl = start_ssld_connect(F, xF[1], rb_get_fd(xF[0])); | |
1252 | SetSSL(client_p); | |
39452169 | 1253 | serv_connect_callback(client_p->localClient->F, RB_OK, client_p); |
c6d72037 VY |
1254 | } |
1255 | ||
212380e3 AC |
1256 | /* |
1257 | * serv_connect_callback() - complete a server connection. | |
1258 | * | |
1259 | * This routine is called after the server connection attempt has | |
1260 | * completed. If unsucessful, an error is sent to ops and the client | |
1261 | * is closed. If sucessful, it goes through the initialisation/check | |
1262 | * procedures, the capabilities are sent, and the socket is then | |
1263 | * marked for reading. | |
1264 | */ | |
1265 | static void | |
6c528b8e | 1266 | serv_connect_callback(rb_fde_t *F, int status, void *data) |
212380e3 AC |
1267 | { |
1268 | struct Client *client_p = data; | |
1269 | struct server_conf *server_p; | |
1270 | char *errstr; | |
1271 | ||
1272 | /* First, make sure its a real client! */ | |
1273 | s_assert(client_p != NULL); | |
6c528b8e | 1274 | s_assert(client_p->localClient->F == F); |
212380e3 AC |
1275 | |
1276 | if(client_p == NULL) | |
1277 | return; | |
1278 | ||
1279 | /* while we were waiting for the callback, its possible this already | |
1280 | * linked in.. --fl | |
1281 | */ | |
1282 | if(find_server(NULL, client_p->name) != NULL) | |
1283 | { | |
1284 | exit_client(client_p, client_p, &me, "Server Exists"); | |
1285 | return; | |
1286 | } | |
1287 | ||
f4a759c5 | 1288 | if(client_p->localClient->ssl_ctl == NULL) |
c6d72037 VY |
1289 | rb_connect_sockaddr(F, (struct sockaddr *)&client_p->localClient->ip, sizeof(client_p->localClient->ip)); |
1290 | ||
212380e3 | 1291 | /* Check the status */ |
6c528b8e | 1292 | if(status != RB_OK) |
212380e3 AC |
1293 | { |
1294 | /* COMM_ERR_TIMEOUT wont have an errno associated with it, | |
1295 | * the others will.. --fl | |
1296 | */ | |
6c528b8e | 1297 | if(status == RB_ERR_TIMEOUT) |
212380e3 AC |
1298 | { |
1299 | sendto_realops_snomask(SNO_GENERAL, is_remote_connect(client_p) ? L_NETWIDE : L_ALL, | |
1300 | "Error connecting to %s[%s]: %s", | |
1301 | client_p->name, | |
212380e3 | 1302 | "255.255.255.255", |
b2f0da88 | 1303 | rb_errstr(status)); |
212380e3 AC |
1304 | ilog(L_SERVER, "Error connecting to %s[%s]: %s", |
1305 | client_p->name, client_p->sockhost, | |
b2f0da88 | 1306 | rb_errstr(status)); |
212380e3 AC |
1307 | } |
1308 | else | |
1309 | { | |
6c528b8e | 1310 | errstr = strerror(rb_get_sockerr(F)); |
212380e3 AC |
1311 | sendto_realops_snomask(SNO_GENERAL, is_remote_connect(client_p) ? L_NETWIDE : L_ALL, |
1312 | "Error connecting to %s[%s]: %s (%s)", | |
1313 | client_p->name, | |
212380e3 | 1314 | "255.255.255.255", |
b2f0da88 | 1315 | rb_errstr(status), errstr); |
212380e3 AC |
1316 | ilog(L_SERVER, "Error connecting to %s[%s]: %s (%s)", |
1317 | client_p->name, client_p->sockhost, | |
b2f0da88 | 1318 | rb_errstr(status), errstr); |
212380e3 AC |
1319 | } |
1320 | ||
b2f0da88 | 1321 | exit_client(client_p, client_p, &me, rb_errstr(status)); |
212380e3 AC |
1322 | return; |
1323 | } | |
1324 | ||
1325 | /* COMM_OK, so continue the connection procedure */ | |
1326 | /* Get the C/N lines */ | |
1327 | if((server_p = client_p->localClient->att_sconf) == NULL) | |
1328 | { | |
1329 | sendto_realops_snomask(SNO_GENERAL, is_remote_connect(client_p) ? L_NETWIDE : L_ALL, "Lost connect{} block for %s", | |
b3ebc7ab | 1330 | client_p->name); |
212380e3 AC |
1331 | exit_client(client_p, client_p, &me, "Lost connect{} block"); |
1332 | return; | |
1333 | } | |
1334 | ||
1335 | /* Next, send the initial handshake */ | |
1336 | SetHandshake(client_p); | |
1337 | ||
ff0cc1e6 AC |
1338 | /* the server may be linking based on certificate fingerprint now. --nenolod */ |
1339 | sendto_one(client_p, "PASS %s TS %d :%s", | |
1340 | EmptyString(server_p->spasswd) ? "*" : server_p->spasswd, TS_CURRENT, me.id); | |
212380e3 AC |
1341 | |
1342 | /* pass my info to the new server */ | |
1343 | send_capabilities(client_p, default_server_capabs | |
1344 | | (ServerConfCompressed(server_p) ? CAP_ZIP_SUPPORTED : 0) | |
1345 | | (ServerConfTb(server_p) ? CAP_TB : 0)); | |
1346 | ||
1347 | sendto_one(client_p, "SERVER %s 1 :%s%s", | |
1348 | me.name, | |
1349 | ConfigServerHide.hidden ? "(H) " : "", me.info); | |
1350 | ||
1351 | /* | |
1352 | * If we've been marked dead because a send failed, just exit | |
1353 | * here now and save everyone the trouble of us ever existing. | |
1354 | */ | |
1355 | if(IsAnyDead(client_p)) | |
1356 | { | |
1357 | sendto_realops_snomask(SNO_GENERAL, is_remote_connect(client_p) ? L_NETWIDE : L_ALL, | |
1358 | "%s went dead during handshake", client_p->name); | |
1359 | exit_client(client_p, client_p, &me, "Went dead during handshake"); | |
1360 | return; | |
1361 | } | |
1362 | ||
1363 | /* don't move to serv_list yet -- we haven't sent a burst! */ | |
1364 | ||
1365 | /* If we get here, we're ok, so lets start reading some data */ | |
6c528b8e | 1366 | read_packet(F, client_p); |
212380e3 | 1367 | } |