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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 AC |
57 | |
58 | extern char *crypt(); | |
59 | ||
60 | #ifndef INADDR_NONE | |
61 | #define INADDR_NONE ((unsigned int) 0xffffffff) | |
62 | #endif | |
63 | ||
64 | #ifndef HAVE_SOCKETPAIR | |
65 | static int inet_socketpair(int d, int type, int protocol, int sv[2]); | |
66 | #endif | |
67 | ||
68 | int MaxConnectionCount = 1; | |
69 | int MaxClientCount = 1; | |
70 | int refresh_user_links = 0; | |
71 | ||
72 | static char buf[BUFSIZE]; | |
73 | ||
212380e3 AC |
74 | /* |
75 | * list of recognized server capabilities. "TS" is not on the list | |
76 | * because all servers that we talk to already do TS, and the kludged | |
77 | * extra argument to "PASS" takes care of checking that. -orabidoo | |
78 | */ | |
79 | struct Capability captab[] = { | |
80 | /* name cap */ | |
81 | { "QS", CAP_QS }, | |
82 | { "EX", CAP_EX }, | |
83 | { "CHW", CAP_CHW}, | |
84 | { "IE", CAP_IE}, | |
85 | { "KLN", CAP_KLN}, | |
212380e3 AC |
86 | { "KNOCK", CAP_KNOCK}, |
87 | { "ZIP", CAP_ZIP}, | |
88 | { "TB", CAP_TB}, | |
89 | { "UNKLN", CAP_UNKLN}, | |
90 | { "CLUSTER", CAP_CLUSTER}, | |
91 | { "ENCAP", CAP_ENCAP }, | |
92 | { "SERVICES", CAP_SERVICE }, | |
93 | { "RSFNC", CAP_RSFNC }, | |
94 | { "SAVE", CAP_SAVE }, | |
95 | { "EUID", CAP_EUID }, | |
96 | {0, 0} | |
97 | }; | |
98 | ||
212380e3 | 99 | static CNCB serv_connect_callback; |
c6d72037 | 100 | static CNCB serv_connect_ssl_callback; |
212380e3 AC |
101 | |
102 | /* | |
103 | * hunt_server - Do the basic thing in delivering the message (command) | |
104 | * across the relays to the specific server (server) for | |
105 | * actions. | |
106 | * | |
107 | * Note: The command is a format string and *MUST* be | |
108 | * of prefixed style (e.g. ":%s COMMAND %s ..."). | |
109 | * Command can have only max 8 parameters. | |
110 | * | |
111 | * server parv[server] is the parameter identifying the | |
112 | * target server. | |
113 | * | |
114 | * *WARNING* | |
115 | * parv[server] is replaced with the pointer to the | |
116 | * real servername from the matched client (I'm lazy | |
117 | * now --msa). | |
118 | * | |
119 | * returns: (see #defines) | |
120 | */ | |
121 | int | |
122 | hunt_server(struct Client *client_p, struct Client *source_p, | |
123 | const char *command, int server, int parc, const char *parv[]) | |
124 | { | |
125 | struct Client *target_p; | |
126 | int wilds; | |
330fc5c1 | 127 | rb_dlink_node *ptr; |
212380e3 AC |
128 | const char *old; |
129 | char *new; | |
130 | ||
131 | /* | |
132 | * Assume it's me, if no server | |
133 | */ | |
134 | if(parc <= server || EmptyString(parv[server]) || | |
4d7a1ee5 | 135 | match(parv[server], me.name) || (strcmp(parv[server], me.id) == 0)) |
212380e3 AC |
136 | return (HUNTED_ISME); |
137 | ||
138 | new = LOCAL_COPY(parv[server]); | |
139 | ||
140 | /* | |
141 | * These are to pickup matches that would cause the following | |
142 | * message to go in the wrong direction while doing quick fast | |
143 | * non-matching lookups. | |
144 | */ | |
145 | if(MyClient(source_p)) | |
146 | target_p = find_named_client(new); | |
147 | else | |
148 | target_p = find_client(new); | |
149 | ||
150 | if(target_p) | |
151 | if(target_p->from == source_p->from && !MyConnect(target_p)) | |
152 | target_p = NULL; | |
153 | ||
212380e3 AC |
154 | collapse(new); |
155 | wilds = (strchr(new, '?') || strchr(new, '*')); | |
156 | ||
157 | /* | |
158 | * Again, if there are no wild cards involved in the server | |
159 | * name, use the hash lookup | |
160 | */ | |
161 | if(!target_p) | |
162 | { | |
163 | if(!wilds) | |
164 | { | |
165 | if(MyClient(source_p) || !IsDigit(parv[server][0])) | |
166 | sendto_one_numeric(source_p, ERR_NOSUCHSERVER, | |
167 | form_str(ERR_NOSUCHSERVER), | |
168 | parv[server]); | |
169 | return (HUNTED_NOSUCH); | |
170 | } | |
171 | else | |
172 | { | |
173 | target_p = NULL; | |
174 | ||
5cefa1d6 | 175 | RB_DLINK_FOREACH(ptr, global_client_list.head) |
212380e3 AC |
176 | { |
177 | if(match(new, ((struct Client *) (ptr->data))->name)) | |
178 | { | |
179 | target_p = ptr->data; | |
180 | break; | |
181 | } | |
182 | } | |
183 | } | |
184 | } | |
185 | ||
186 | if(target_p) | |
187 | { | |
188 | if(!IsRegistered(target_p)) | |
189 | { | |
190 | sendto_one_numeric(source_p, ERR_NOSUCHSERVER, | |
191 | form_str(ERR_NOSUCHSERVER), | |
192 | parv[server]); | |
193 | return HUNTED_NOSUCH; | |
194 | } | |
195 | ||
196 | if(IsMe(target_p) || MyClient(target_p)) | |
197 | return HUNTED_ISME; | |
198 | ||
199 | old = parv[server]; | |
200 | parv[server] = get_id(target_p, target_p); | |
201 | ||
202 | sendto_one(target_p, command, get_id(source_p, target_p), | |
203 | parv[1], parv[2], parv[3], parv[4], parv[5], parv[6], parv[7], parv[8]); | |
204 | parv[server] = old; | |
205 | return (HUNTED_PASS); | |
206 | } | |
207 | ||
95d36ef5 | 208 | if(MyClient(source_p) || !IsDigit(parv[server][0])) |
212380e3 AC |
209 | sendto_one_numeric(source_p, ERR_NOSUCHSERVER, |
210 | form_str(ERR_NOSUCHSERVER), parv[server]); | |
211 | return (HUNTED_NOSUCH); | |
212 | } | |
213 | ||
214 | /* | |
215 | * try_connections - scan through configuration and try new connections. | |
216 | * Returns the calendar time when the next call to this | |
217 | * function should be made latest. (No harm done if this | |
218 | * is called earlier or later...) | |
219 | */ | |
220 | void | |
221 | try_connections(void *unused) | |
222 | { | |
223 | struct Client *client_p; | |
224 | struct server_conf *server_p = NULL; | |
225 | struct server_conf *tmp_p; | |
226 | struct Class *cltmp; | |
330fc5c1 | 227 | rb_dlink_node *ptr; |
212380e3 AC |
228 | int connecting = FALSE; |
229 | int confrq = 0; | |
230 | time_t next = 0; | |
231 | ||
5cefa1d6 | 232 | RB_DLINK_FOREACH(ptr, server_conf_list.head) |
212380e3 AC |
233 | { |
234 | tmp_p = ptr->data; | |
235 | ||
236 | if(ServerConfIllegal(tmp_p) || !ServerConfAutoconn(tmp_p)) | |
237 | continue; | |
238 | ||
f4a759c5 VY |
239 | /* don't allow ssl connections if ssl isn't setup */ |
240 | if(ServerConfSSL(tmp_p) && (!ssl_ok || !get_ssld_count())) | |
c6d72037 VY |
241 | continue; |
242 | ||
212380e3 AC |
243 | cltmp = tmp_p->class; |
244 | ||
245 | /* | |
246 | * Skip this entry if the use of it is still on hold until | |
247 | * future. Otherwise handle this entry (and set it on hold | |
248 | * until next time). Will reset only hold times, if already | |
249 | * made one successfull connection... [this algorithm is | |
250 | * a bit fuzzy... -- msa >;) ] | |
251 | */ | |
e3354945 | 252 | if(tmp_p->hold > rb_current_time()) |
212380e3 AC |
253 | { |
254 | if(next > tmp_p->hold || next == 0) | |
255 | next = tmp_p->hold; | |
256 | continue; | |
257 | } | |
258 | ||
259 | confrq = get_con_freq(cltmp); | |
e3354945 | 260 | tmp_p->hold = rb_current_time() + confrq; |
212380e3 AC |
261 | |
262 | /* | |
263 | * Found a CONNECT config with port specified, scan clients | |
264 | * and see if this server is already connected? | |
265 | */ | |
266 | client_p = find_server(NULL, tmp_p->name); | |
267 | ||
268 | if(!client_p && (CurrUsers(cltmp) < MaxUsers(cltmp)) && !connecting) | |
269 | { | |
270 | server_p = tmp_p; | |
271 | ||
272 | /* We connect only one at time... */ | |
273 | connecting = TRUE; | |
274 | } | |
275 | ||
276 | if((next > tmp_p->hold) || (next == 0)) | |
277 | next = tmp_p->hold; | |
278 | } | |
279 | ||
280 | /* TODO: change this to set active flag to 0 when added to event! --Habeeb */ | |
281 | if(GlobalSetOptions.autoconn == 0) | |
282 | return; | |
283 | ||
284 | if(!connecting) | |
285 | return; | |
286 | ||
287 | /* move this connect entry to end.. */ | |
330fc5c1 AC |
288 | rb_dlinkDelete(&server_p->node, &server_conf_list); |
289 | rb_dlinkAddTail(server_p, &server_p->node, &server_conf_list); | |
212380e3 AC |
290 | |
291 | /* | |
292 | * We used to only print this if serv_connect() actually | |
b2f0da88 | 293 | * suceeded, but since rb_tcp_connect() can call the callback |
212380e3 AC |
294 | * immediately if there is an error, we were getting error messages |
295 | * in the wrong order. SO, we just print out the activated line, | |
296 | * and let serv_connect() / serv_connect_callback() print an | |
297 | * error afterwards if it fails. | |
298 | * -- adrian | |
299 | */ | |
212380e3 AC |
300 | sendto_realops_snomask(SNO_GENERAL, L_ALL, |
301 | "Connection to %s activated", | |
302 | server_p->name); | |
212380e3 AC |
303 | |
304 | serv_connect(server_p, 0); | |
305 | } | |
306 | ||
307 | int | |
308 | check_server(const char *name, struct Client *client_p) | |
309 | { | |
310 | struct server_conf *server_p = NULL; | |
311 | struct server_conf *tmp_p; | |
330fc5c1 | 312 | rb_dlink_node *ptr; |
212380e3 AC |
313 | int error = -1; |
314 | ||
315 | s_assert(NULL != client_p); | |
316 | if(client_p == NULL) | |
317 | return error; | |
318 | ||
319 | if(!(client_p->localClient->passwd)) | |
320 | return -2; | |
321 | ||
322 | if(strlen(name) > HOSTLEN) | |
323 | return -4; | |
324 | ||
5cefa1d6 | 325 | RB_DLINK_FOREACH(ptr, server_conf_list.head) |
212380e3 AC |
326 | { |
327 | tmp_p = ptr->data; | |
328 | ||
329 | if(ServerConfIllegal(tmp_p)) | |
330 | continue; | |
331 | ||
332 | if(!match(tmp_p->name, name)) | |
333 | continue; | |
334 | ||
335 | error = -3; | |
336 | ||
337 | /* XXX: Fix me for IPv6 */ | |
338 | /* XXX sockhost is the IPv4 ip as a string */ | |
339 | if(match(tmp_p->host, client_p->host) || | |
340 | match(tmp_p->host, client_p->sockhost)) | |
341 | { | |
342 | error = -2; | |
343 | ||
344 | if(ServerConfEncrypted(tmp_p)) | |
345 | { | |
346 | if(!strcmp(tmp_p->passwd, crypt(client_p->localClient->passwd, | |
347 | tmp_p->passwd))) | |
348 | { | |
349 | server_p = tmp_p; | |
350 | break; | |
351 | } | |
352 | } | |
353 | else if(!strcmp(tmp_p->passwd, client_p->localClient->passwd)) | |
354 | { | |
355 | server_p = tmp_p; | |
356 | break; | |
357 | } | |
358 | } | |
359 | } | |
360 | ||
361 | if(server_p == NULL) | |
362 | return error; | |
363 | ||
f4a759c5 VY |
364 | if(ServerConfSSL(server_p) && client_p->localClient->ssl_ctl == NULL) |
365 | { | |
366 | return -5; | |
c6d72037 VY |
367 | } |
368 | ||
212380e3 AC |
369 | attach_server_conf(client_p, server_p); |
370 | ||
371 | /* clear ZIP/TB if they support but we dont want them */ | |
372 | #ifdef HAVE_LIBZ | |
373 | if(!ServerConfCompressed(server_p)) | |
374 | #endif | |
375 | ClearCap(client_p, CAP_ZIP); | |
376 | ||
377 | if(!ServerConfTb(server_p)) | |
378 | ClearCap(client_p, CAP_TB); | |
379 | ||
380 | return 0; | |
381 | } | |
382 | ||
383 | /* | |
384 | * send_capabilities | |
385 | * | |
386 | * inputs - Client pointer to send to | |
387 | * - int flag of capabilities that this server has | |
388 | * output - NONE | |
389 | * side effects - send the CAPAB line to a server -orabidoo | |
390 | * | |
391 | */ | |
392 | void | |
393 | send_capabilities(struct Client *client_p, int cap_can_send) | |
394 | { | |
395 | struct Capability *cap; | |
396 | char msgbuf[BUFSIZE]; | |
397 | char *t; | |
398 | int tl; | |
399 | ||
400 | t = msgbuf; | |
401 | ||
402 | for (cap = captab; cap->name; ++cap) | |
403 | { | |
404 | if(cap->cap & cap_can_send) | |
405 | { | |
b2f0da88 | 406 | tl = rb_sprintf(t, "%s ", cap->name); |
212380e3 AC |
407 | t += tl; |
408 | } | |
409 | } | |
410 | ||
411 | t--; | |
412 | *t = '\0'; | |
413 | ||
414 | sendto_one(client_p, "CAPAB :%s", msgbuf); | |
415 | } | |
416 | ||
212380e3 AC |
417 | /* burst_modes_TS6() |
418 | * | |
419 | * input - client to burst to, channel name, list to burst, mode flag | |
420 | * output - | |
421 | * side effects - client is sent a list of +b, +e, or +I modes | |
422 | */ | |
423 | static void | |
424 | burst_modes_TS6(struct Client *client_p, struct Channel *chptr, | |
330fc5c1 | 425 | rb_dlink_list *list, char flag) |
212380e3 | 426 | { |
330fc5c1 | 427 | rb_dlink_node *ptr; |
212380e3 AC |
428 | struct Ban *banptr; |
429 | char *t; | |
430 | int tlen; | |
431 | int mlen; | |
432 | int cur_len; | |
433 | ||
b2f0da88 | 434 | cur_len = mlen = rb_sprintf(buf, ":%s BMASK %ld %s %c :", |
212380e3 AC |
435 | me.id, (long) chptr->channelts, chptr->chname, flag); |
436 | t = buf + mlen; | |
437 | ||
5cefa1d6 | 438 | RB_DLINK_FOREACH(ptr, list->head) |
212380e3 AC |
439 | { |
440 | banptr = ptr->data; | |
441 | ||
442 | tlen = strlen(banptr->banstr) + 1; | |
443 | ||
444 | /* uh oh */ | |
445 | if(cur_len + tlen > BUFSIZE - 3) | |
446 | { | |
447 | /* the one we're trying to send doesnt fit at all! */ | |
448 | if(cur_len == mlen) | |
449 | { | |
450 | s_assert(0); | |
451 | continue; | |
452 | } | |
453 | ||
454 | /* chop off trailing space and send.. */ | |
455 | *(t-1) = '\0'; | |
456 | sendto_one(client_p, "%s", buf); | |
457 | cur_len = mlen; | |
458 | t = buf + mlen; | |
459 | } | |
460 | ||
b2f0da88 | 461 | rb_sprintf(t, "%s ", banptr->banstr); |
212380e3 AC |
462 | t += tlen; |
463 | cur_len += tlen; | |
464 | } | |
465 | ||
466 | /* cant ever exit the loop above without having modified buf, | |
467 | * chop off trailing space and send. | |
468 | */ | |
469 | *(t-1) = '\0'; | |
470 | sendto_one(client_p, "%s", buf); | |
471 | } | |
472 | ||
212380e3 AC |
473 | /* |
474 | * burst_TS6 | |
475 | * | |
476 | * inputs - client (server) to send nick towards | |
477 | * - client to send nick for | |
478 | * output - NONE | |
479 | * side effects - NICK message is sent towards given client_p | |
480 | */ | |
481 | static void | |
482 | burst_TS6(struct Client *client_p) | |
483 | { | |
484 | static char ubuf[12]; | |
485 | struct Client *target_p; | |
486 | struct Channel *chptr; | |
487 | struct membership *msptr; | |
488 | hook_data_client hclientinfo; | |
489 | hook_data_channel hchaninfo; | |
330fc5c1 AC |
490 | rb_dlink_node *ptr; |
491 | rb_dlink_node *uptr; | |
212380e3 AC |
492 | char *t; |
493 | int tlen, mlen; | |
494 | int cur_len = 0; | |
495 | ||
496 | hclientinfo.client = hchaninfo.client = client_p; | |
497 | ||
5cefa1d6 | 498 | RB_DLINK_FOREACH(ptr, global_client_list.head) |
212380e3 AC |
499 | { |
500 | target_p = ptr->data; | |
501 | ||
502 | if(!IsPerson(target_p)) | |
503 | continue; | |
504 | ||
505 | send_umode(NULL, target_p, 0, 0, ubuf); | |
506 | if(!*ubuf) | |
507 | { | |
508 | ubuf[0] = '+'; | |
509 | ubuf[1] = '\0'; | |
510 | } | |
511 | ||
512 | if(has_id(target_p) && IsCapable(client_p, CAP_EUID)) | |
513 | sendto_one(client_p, ":%s EUID %s %d %ld %s %s %s %s %s %s %s :%s", | |
514 | target_p->servptr->id, target_p->name, | |
515 | target_p->hopcount + 1, | |
516 | (long) target_p->tsinfo, ubuf, | |
517 | target_p->username, target_p->host, | |
518 | IsIPSpoof(target_p) ? "0" : target_p->sockhost, | |
519 | target_p->id, | |
520 | IsDynSpoof(target_p) ? target_p->orighost : "*", | |
521 | EmptyString(target_p->user->suser) ? "*" : target_p->user->suser, | |
522 | target_p->info); | |
523 | else if(has_id(target_p)) | |
524 | sendto_one(client_p, ":%s UID %s %d %ld %s %s %s %s %s :%s", | |
525 | target_p->servptr->id, target_p->name, | |
526 | target_p->hopcount + 1, | |
527 | (long) target_p->tsinfo, ubuf, | |
528 | target_p->username, target_p->host, | |
529 | IsIPSpoof(target_p) ? "0" : target_p->sockhost, | |
530 | target_p->id, target_p->info); | |
531 | else | |
532 | sendto_one(client_p, "NICK %s %d %ld %s %s %s %s :%s", | |
533 | target_p->name, | |
534 | target_p->hopcount + 1, | |
535 | (long) target_p->tsinfo, | |
536 | ubuf, | |
537 | target_p->username, target_p->host, | |
c88cdb00 | 538 | target_p->servptr->name, target_p->info); |
212380e3 AC |
539 | |
540 | if(!has_id(target_p) || !IsCapable(client_p, CAP_EUID)) | |
541 | { | |
542 | if(IsDynSpoof(target_p)) | |
543 | sendto_one(client_p, ":%s ENCAP * REALHOST %s", | |
544 | use_id(target_p), target_p->orighost); | |
545 | if(!EmptyString(target_p->user->suser)) | |
546 | sendto_one(client_p, ":%s ENCAP * LOGIN %s", | |
547 | use_id(target_p), target_p->user->suser); | |
548 | } | |
549 | ||
550 | if(ConfigFileEntry.burst_away && !EmptyString(target_p->user->away)) | |
551 | sendto_one(client_p, ":%s AWAY :%s", | |
552 | use_id(target_p), | |
553 | target_p->user->away); | |
554 | ||
555 | hclientinfo.target = target_p; | |
556 | call_hook(h_burst_client, &hclientinfo); | |
557 | } | |
558 | ||
5cefa1d6 | 559 | RB_DLINK_FOREACH(ptr, global_channel_list.head) |
212380e3 AC |
560 | { |
561 | chptr = ptr->data; | |
562 | ||
563 | if(*chptr->chname != '#') | |
564 | continue; | |
565 | ||
b2f0da88 | 566 | cur_len = mlen = rb_sprintf(buf, ":%s SJOIN %ld %s %s :", me.id, |
212380e3 AC |
567 | (long) chptr->channelts, chptr->chname, |
568 | channel_modes(chptr, client_p)); | |
569 | ||
570 | t = buf + mlen; | |
571 | ||
5cefa1d6 | 572 | RB_DLINK_FOREACH(uptr, chptr->members.head) |
212380e3 AC |
573 | { |
574 | msptr = uptr->data; | |
575 | ||
576 | tlen = strlen(use_id(msptr->client_p)) + 1; | |
577 | if(is_chanop(msptr)) | |
578 | tlen++; | |
579 | if(is_voiced(msptr)) | |
580 | tlen++; | |
581 | ||
582 | if(cur_len + tlen >= BUFSIZE - 3) | |
583 | { | |
584 | *(t-1) = '\0'; | |
585 | sendto_one(client_p, "%s", buf); | |
586 | cur_len = mlen; | |
587 | t = buf + mlen; | |
588 | } | |
589 | ||
b2f0da88 | 590 | rb_sprintf(t, "%s%s ", find_channel_status(msptr, 1), |
212380e3 AC |
591 | use_id(msptr->client_p)); |
592 | ||
593 | cur_len += tlen; | |
594 | t += tlen; | |
595 | } | |
596 | ||
330fc5c1 | 597 | if (rb_dlink_list_length(&chptr->members) > 0) |
212380e3 AC |
598 | { |
599 | /* remove trailing space */ | |
600 | *(t-1) = '\0'; | |
601 | } | |
602 | sendto_one(client_p, "%s", buf); | |
603 | ||
330fc5c1 | 604 | if(rb_dlink_list_length(&chptr->banlist) > 0) |
212380e3 AC |
605 | burst_modes_TS6(client_p, chptr, &chptr->banlist, 'b'); |
606 | ||
607 | if(IsCapable(client_p, CAP_EX) && | |
330fc5c1 | 608 | rb_dlink_list_length(&chptr->exceptlist) > 0) |
212380e3 AC |
609 | burst_modes_TS6(client_p, chptr, &chptr->exceptlist, 'e'); |
610 | ||
611 | if(IsCapable(client_p, CAP_IE) && | |
330fc5c1 | 612 | rb_dlink_list_length(&chptr->invexlist) > 0) |
212380e3 AC |
613 | burst_modes_TS6(client_p, chptr, &chptr->invexlist, 'I'); |
614 | ||
330fc5c1 | 615 | if(rb_dlink_list_length(&chptr->quietlist) > 0) |
212380e3 AC |
616 | burst_modes_TS6(client_p, chptr, &chptr->quietlist, 'q'); |
617 | ||
618 | if(IsCapable(client_p, CAP_TB) && chptr->topic != NULL) | |
619 | sendto_one(client_p, ":%s TB %s %ld %s%s:%s", | |
620 | me.id, chptr->chname, (long) chptr->topic_time, | |
621 | ConfigChannel.burst_topicwho ? chptr->topic_info : "", | |
622 | ConfigChannel.burst_topicwho ? " " : "", | |
623 | chptr->topic); | |
624 | ||
625 | hchaninfo.chptr = chptr; | |
626 | call_hook(h_burst_channel, &hchaninfo); | |
627 | } | |
628 | ||
629 | hclientinfo.target = NULL; | |
630 | call_hook(h_burst_finished, &hclientinfo); | |
631 | } | |
632 | ||
633 | /* | |
634 | * show_capabilities - show current server capabilities | |
635 | * | |
636 | * inputs - pointer to an struct Client | |
637 | * output - pointer to static string | |
638 | * side effects - build up string representing capabilities of server listed | |
639 | */ | |
640 | const char * | |
641 | show_capabilities(struct Client *target_p) | |
642 | { | |
643 | static char msgbuf[BUFSIZE]; | |
644 | struct Capability *cap; | |
212380e3 | 645 | |
f4a759c5 VY |
646 | if(has_id(target_p)) |
647 | rb_strlcpy(msgbuf, " TS6", sizeof(msgbuf)); | |
f4a759c5 VY |
648 | |
649 | if(IsSSL(target_p)) | |
650 | rb_strlcat(msgbuf, " SSL", sizeof(msgbuf)); | |
212380e3 AC |
651 | |
652 | if(!IsServer(target_p) || !target_p->serv->caps) /* short circuit if no caps */ | |
f4a759c5 | 653 | return msgbuf + 1; |
212380e3 AC |
654 | |
655 | for (cap = captab; cap->cap; ++cap) | |
656 | { | |
657 | if(cap->cap & target_p->serv->caps) | |
f4a759c5 | 658 | rb_snprintf_append(msgbuf, sizeof(msgbuf), " %s", cap->name); |
212380e3 AC |
659 | } |
660 | ||
f4a759c5 | 661 | return msgbuf + 1; |
212380e3 AC |
662 | } |
663 | ||
664 | /* | |
665 | * server_estab | |
666 | * | |
667 | * inputs - pointer to a struct Client | |
668 | * output - | |
669 | * side effects - | |
670 | */ | |
671 | int | |
672 | server_estab(struct Client *client_p) | |
673 | { | |
674 | struct Client *target_p; | |
675 | struct server_conf *server_p; | |
676 | hook_data_client hdata; | |
677 | char *host; | |
330fc5c1 | 678 | rb_dlink_node *ptr; |
6c528b8e | 679 | char note[HOSTLEN + 15]; |
212380e3 AC |
680 | |
681 | s_assert(NULL != client_p); | |
682 | if(client_p == NULL) | |
683 | return -1; | |
212380e3 AC |
684 | |
685 | host = client_p->name; | |
686 | ||
687 | if((server_p = client_p->localClient->att_sconf) == NULL) | |
688 | { | |
689 | /* This shouldn't happen, better tell the ops... -A1kmm */ | |
690 | sendto_realops_snomask(SNO_GENERAL, is_remote_connect(client_p) ? L_NETWIDE : L_ALL, | |
691 | "Warning: Lost connect{} block for server %s!", host); | |
692 | return exit_client(client_p, client_p, client_p, "Lost connect{} block!"); | |
693 | } | |
694 | ||
695 | /* We shouldn't have to check this, it should already done before | |
696 | * server_estab is called. -A1kmm | |
697 | */ | |
698 | if(client_p->localClient->passwd) | |
699 | { | |
700 | memset(client_p->localClient->passwd, 0, strlen(client_p->localClient->passwd)); | |
637c4932 | 701 | rb_free(client_p->localClient->passwd); |
212380e3 AC |
702 | client_p->localClient->passwd = NULL; |
703 | } | |
704 | ||
705 | /* Its got identd , since its a server */ | |
706 | SetGotId(client_p); | |
707 | ||
708 | /* If there is something in the serv_list, it might be this | |
709 | * connecting server.. | |
710 | */ | |
711 | if(!ServerInfo.hub && serv_list.head) | |
712 | { | |
713 | if(client_p != serv_list.head->data || serv_list.head->next) | |
714 | { | |
47adde3d | 715 | ServerStats.is_ref++; |
212380e3 AC |
716 | sendto_one(client_p, "ERROR :I'm a leaf not a hub"); |
717 | return exit_client(client_p, client_p, client_p, "I'm a leaf"); | |
718 | } | |
719 | } | |
720 | ||
721 | if(IsUnknown(client_p)) | |
722 | { | |
723 | /* | |
724 | * jdc -- 1. Use EmptyString(), not [0] index reference. | |
725 | * 2. Check ->spasswd, not ->passwd. | |
726 | */ | |
727 | if(!EmptyString(server_p->spasswd)) | |
728 | { | |
cda8e9b8 AC |
729 | sendto_one(client_p, "PASS %s TS %d :%s", |
730 | server_p->spasswd, TS_CURRENT, me.id); | |
212380e3 AC |
731 | } |
732 | ||
733 | /* pass info to new server */ | |
734 | send_capabilities(client_p, default_server_capabs | |
735 | | (ServerConfCompressed(server_p) ? CAP_ZIP_SUPPORTED : 0) | |
736 | | (ServerConfTb(server_p) ? CAP_TB : 0)); | |
737 | ||
738 | sendto_one(client_p, "SERVER %s 1 :%s%s", | |
739 | me.name, | |
740 | ConfigServerHide.hidden ? "(H) " : "", | |
741 | (me.info[0]) ? (me.info) : "IRCers United"); | |
742 | } | |
743 | ||
6c528b8e | 744 | if(!rb_set_buffers(client_p->localClient->F, READBUF_SIZE)) |
825ddf13 | 745 | ilog_error("rb_set_buffers failed for server"); |
212380e3 | 746 | |
c6d72037 | 747 | /* Enable compression now */ |
f4a759c5 VY |
748 | if(IsCapable(client_p, CAP_ZIP)) |
749 | { | |
750 | start_zlib_session(client_p); | |
751 | } | |
8982edb0 | 752 | sendto_one(client_p, "SVINFO %d %d 0 :%ld", TS_CURRENT, TS_MIN, (long int)rb_current_time()); |
212380e3 AC |
753 | |
754 | client_p->servptr = &me; | |
755 | ||
756 | if(IsAnyDead(client_p)) | |
757 | return CLIENT_EXITED; | |
758 | ||
759 | SetServer(client_p); | |
760 | ||
761 | /* Update the capability combination usage counts */ | |
762 | set_chcap_usage_counts(client_p); | |
763 | ||
330fc5c1 | 764 | rb_dlinkAdd(client_p, &client_p->lnode, &me.serv->servers); |
54015b5f | 765 | del_unknown_ip(client_p); |
330fc5c1 AC |
766 | rb_dlinkMoveNode(&client_p->localClient->tnode, &unknown_list, &serv_list); |
767 | rb_dlinkAddTailAlloc(client_p, &global_serv_list); | |
212380e3 AC |
768 | |
769 | if(has_id(client_p)) | |
770 | add_to_id_hash(client_p->id, client_p); | |
771 | ||
772 | add_to_client_hash(client_p->name, client_p); | |
773 | /* doesnt duplicate client_p->serv if allocated this struct already */ | |
774 | make_server(client_p); | |
212380e3 AC |
775 | |
776 | client_p->serv->caps = client_p->localClient->caps; | |
777 | ||
778 | if(client_p->localClient->fullcaps) | |
779 | { | |
47a03750 | 780 | client_p->serv->fullcaps = rb_strdup(client_p->localClient->fullcaps); |
637c4932 | 781 | rb_free(client_p->localClient->fullcaps); |
212380e3 AC |
782 | client_p->localClient->fullcaps = NULL; |
783 | } | |
784 | ||
994544c2 | 785 | client_p->serv->nameinfo = scache_connect(client_p->name, client_p->info, IsHidden(client_p)); |
e3354945 | 786 | client_p->localClient->firsttime = rb_current_time(); |
212380e3 AC |
787 | /* fixing eob timings.. -gnp */ |
788 | ||
330fc5c1 | 789 | if((rb_dlink_list_length(&lclient_list) + rb_dlink_list_length(&serv_list)) > |
2f15f871 | 790 | (unsigned long)MaxConnectionCount) |
330fc5c1 AC |
791 | MaxConnectionCount = rb_dlink_list_length(&lclient_list) + |
792 | rb_dlink_list_length(&serv_list); | |
2f15f871 | 793 | |
212380e3 AC |
794 | /* Show the real host/IP to admins */ |
795 | sendto_realops_snomask(SNO_GENERAL, L_ALL, | |
796 | "Link with %s established: (%s) link", | |
b3ebc7ab | 797 | client_p->name, |
212380e3 AC |
798 | show_capabilities(client_p)); |
799 | ||
800 | ilog(L_SERVER, "Link with %s established: (%s) link", | |
801 | log_client_name(client_p, SHOW_IP), show_capabilities(client_p)); | |
802 | ||
803 | hdata.client = &me; | |
804 | hdata.target = client_p; | |
805 | call_hook(h_server_introduced, &hdata); | |
806 | ||
f4a759c5 | 807 | rb_snprintf(note, sizeof(note), "Server: %s", client_p->name); |
c6d72037 | 808 | rb_note(client_p->localClient->F, note); |
212380e3 AC |
809 | |
810 | /* | |
811 | ** Old sendto_serv_but_one() call removed because we now | |
812 | ** need to send different names to different servers | |
813 | ** (domain name matching) Send new server to other servers. | |
814 | */ | |
5cefa1d6 | 815 | RB_DLINK_FOREACH(ptr, serv_list.head) |
212380e3 AC |
816 | { |
817 | target_p = ptr->data; | |
818 | ||
819 | if(target_p == client_p) | |
820 | continue; | |
821 | ||
822 | if(has_id(target_p) && has_id(client_p)) | |
823 | { | |
824 | sendto_one(target_p, ":%s SID %s 2 %s :%s%s", | |
825 | me.id, client_p->name, client_p->id, | |
826 | IsHidden(client_p) ? "(H) " : "", client_p->info); | |
827 | ||
828 | if(IsCapable(target_p, CAP_ENCAP) && | |
829 | !EmptyString(client_p->serv->fullcaps)) | |
830 | sendto_one(target_p, ":%s ENCAP * GCAP :%s", | |
831 | client_p->id, client_p->serv->fullcaps); | |
832 | } | |
833 | else | |
834 | { | |
835 | sendto_one(target_p, ":%s SERVER %s 2 :%s%s", | |
836 | me.name, client_p->name, | |
837 | IsHidden(client_p) ? "(H) " : "", client_p->info); | |
838 | ||
839 | if(IsCapable(target_p, CAP_ENCAP) && | |
840 | !EmptyString(client_p->serv->fullcaps)) | |
841 | sendto_one(target_p, ":%s ENCAP * GCAP :%s", | |
842 | client_p->name, client_p->serv->fullcaps); | |
843 | } | |
844 | } | |
845 | ||
846 | /* | |
847 | ** Pass on my client information to the new server | |
848 | ** | |
849 | ** First, pass only servers (idea is that if the link gets | |
850 | ** cancelled beacause the server was already there, | |
851 | ** there are no NICK's to be cancelled...). Of course, | |
852 | ** if cancellation occurs, all this info is sent anyway, | |
853 | ** and I guess the link dies when a read is attempted...? --msa | |
854 | ** | |
855 | ** Note: Link cancellation to occur at this point means | |
856 | ** that at least two servers from my fragment are building | |
857 | ** up connection this other fragment at the same time, it's | |
858 | ** a race condition, not the normal way of operation... | |
859 | ** | |
860 | ** ALSO NOTE: using the get_client_name for server names-- | |
861 | ** see previous *WARNING*!!! (Also, original inpath | |
862 | ** is destroyed...) | |
863 | */ | |
5cefa1d6 | 864 | RB_DLINK_FOREACH(ptr, global_serv_list.head) |
212380e3 AC |
865 | { |
866 | target_p = ptr->data; | |
867 | ||
868 | /* target_p->from == target_p for target_p == client_p */ | |
869 | if(IsMe(target_p) || target_p->from == client_p) | |
870 | continue; | |
871 | ||
872 | /* presumption, if target has an id, so does its uplink */ | |
873 | if(has_id(client_p) && has_id(target_p)) | |
874 | sendto_one(client_p, ":%s SID %s %d %s :%s%s", | |
66c8fdd2 | 875 | target_p->servptr->id, target_p->name, |
212380e3 AC |
876 | target_p->hopcount + 1, target_p->id, |
877 | IsHidden(target_p) ? "(H) " : "", target_p->info); | |
878 | else | |
879 | sendto_one(client_p, ":%s SERVER %s %d :%s%s", | |
66c8fdd2 | 880 | target_p->servptr->name, |
212380e3 AC |
881 | target_p->name, target_p->hopcount + 1, |
882 | IsHidden(target_p) ? "(H) " : "", target_p->info); | |
883 | ||
884 | if(IsCapable(client_p, CAP_ENCAP) && | |
885 | !EmptyString(target_p->serv->fullcaps)) | |
886 | sendto_one(client_p, ":%s ENCAP * GCAP :%s", | |
887 | get_id(target_p, client_p), | |
888 | target_p->serv->fullcaps); | |
889 | } | |
890 | ||
7bb8c655 | 891 | burst_TS6(client_p); |
212380e3 AC |
892 | |
893 | /* Always send a PING after connect burst is done */ | |
894 | sendto_one(client_p, "PING :%s", get_id(&me, client_p)); | |
895 | ||
896 | free_pre_client(client_p); | |
897 | ||
f4a759c5 | 898 | if (!IsCapable(client_p, CAP_ZIP)) |
c6d72037 | 899 | send_pop_queue(client_p); |
212380e3 AC |
900 | |
901 | return 0; | |
212380e3 AC |
902 | } |
903 | ||
904 | /* | |
905 | * New server connection code | |
906 | * Based upon the stuff floating about in s_bsd.c | |
907 | * -- adrian | |
908 | */ | |
909 | ||
abe5dd20 JT |
910 | static int |
911 | serv_connect_resolved(struct Client *client_p) | |
912 | { | |
913 | struct rb_sockaddr_storage myipnum; | |
914 | char vhoststr[HOSTIPLEN]; | |
915 | struct server_conf *server_p; | |
916 | uint16_t port; | |
917 | ||
918 | if((server_p = client_p->localClient->att_sconf) == NULL) | |
919 | { | |
920 | sendto_realops_snomask(SNO_GENERAL, is_remote_connect(client_p) ? L_NETWIDE : L_ALL, "Lost connect{} block for %s", | |
b3ebc7ab | 921 | client_p->name); |
abe5dd20 JT |
922 | exit_client(client_p, client_p, &me, "Lost connect{} block"); |
923 | return 0; | |
924 | } | |
925 | ||
926 | #ifdef RB_IPV6 | |
927 | if(client_p->localClient->ip.ss_family == AF_INET6) | |
928 | port = ntohs(((struct sockaddr_in6 *)&client_p->localClient->ip)->sin6_port); | |
929 | else | |
930 | #endif | |
931 | port = ntohs(((struct sockaddr_in *)&client_p->localClient->ip)->sin_port); | |
932 | ||
933 | if(ServerConfVhosted(server_p)) | |
934 | { | |
935 | memcpy(&myipnum, &server_p->my_ipnum, sizeof(myipnum)); | |
936 | ((struct sockaddr_in *)&myipnum)->sin_port = 0; | |
937 | myipnum.ss_family = server_p->aftype; | |
938 | ||
939 | } | |
940 | else if(server_p->aftype == AF_INET && ServerInfo.specific_ipv4_vhost) | |
941 | { | |
942 | memcpy(&myipnum, &ServerInfo.ip, sizeof(myipnum)); | |
943 | ((struct sockaddr_in *)&myipnum)->sin_port = 0; | |
944 | myipnum.ss_family = AF_INET; | |
945 | SET_SS_LEN(&myipnum, sizeof(struct sockaddr_in)); | |
946 | } | |
947 | ||
948 | #ifdef RB_IPV6 | |
949 | else if((server_p->aftype == AF_INET6) && ServerInfo.specific_ipv6_vhost) | |
950 | { | |
951 | memcpy(&myipnum, &ServerInfo.ip6, sizeof(myipnum)); | |
952 | ((struct sockaddr_in6 *)&myipnum)->sin6_port = 0; | |
953 | myipnum.ss_family = AF_INET6; | |
954 | SET_SS_LEN(&myipnum, sizeof(struct sockaddr_in6)); | |
955 | } | |
956 | #endif | |
957 | else | |
958 | { | |
959 | /* log */ | |
960 | ilog(L_SERVER, "Connecting to %s[%s] port %d (%s)", client_p->name, client_p->sockhost, port, | |
961 | #ifdef RB_IPV6 | |
962 | server_p->aftype == AF_INET6 ? "IPv6" : | |
963 | #endif | |
964 | (server_p->aftype == AF_INET ? "IPv4" : "?")); | |
965 | ||
f4a759c5 VY |
966 | if(ServerConfSSL(server_p)) |
967 | { | |
968 | rb_connect_tcp(client_p->localClient->F, (struct sockaddr *)&client_p->localClient->ip, | |
969 | NULL, 0, serv_connect_ssl_callback, | |
970 | client_p, ConfigFileEntry.connect_timeout); | |
971 | } | |
972 | else | |
973 | rb_connect_tcp(client_p->localClient->F, (struct sockaddr *)&client_p->localClient->ip, | |
974 | NULL, 0, serv_connect_callback, | |
c6d72037 | 975 | client_p, ConfigFileEntry.connect_timeout); |
abe5dd20 JT |
976 | return 1; |
977 | } | |
978 | ||
979 | /* log */ | |
caa4d9d2 | 980 | rb_inet_ntop_sock((struct sockaddr *)&myipnum, vhoststr, sizeof vhoststr); |
abe5dd20 JT |
981 | ilog(L_SERVER, "Connecting to %s[%s] port %d (%s) (vhost %s)", client_p->name, client_p->sockhost, port, |
982 | #ifdef RB_IPV6 | |
983 | server_p->aftype == AF_INET6 ? "IPv6" : | |
984 | #endif | |
985 | (server_p->aftype == AF_INET ? "IPv4" : "?"), vhoststr); | |
986 | ||
987 | ||
f4a759c5 VY |
988 | if(ServerConfSSL(server_p)) |
989 | rb_connect_tcp(client_p->localClient->F, (struct sockaddr *)&client_p->localClient->ip, | |
990 | (struct sockaddr *) &myipnum, | |
991 | GET_SS_LEN(&myipnum), serv_connect_ssl_callback, client_p, | |
992 | ConfigFileEntry.connect_timeout); | |
993 | else | |
994 | rb_connect_tcp(client_p->localClient->F, (struct sockaddr *)&client_p->localClient->ip, | |
995 | (struct sockaddr *) &myipnum, | |
996 | GET_SS_LEN(&myipnum), serv_connect_callback, client_p, | |
c6d72037 | 997 | ConfigFileEntry.connect_timeout); |
abe5dd20 JT |
998 | |
999 | return 1; | |
1000 | } | |
1001 | ||
1002 | static void | |
1003 | serv_connect_dns_callback(void *vptr, struct DNSReply *reply) | |
1004 | { | |
1005 | struct Client *client_p = vptr; | |
1006 | uint16_t port; | |
1007 | ||
1008 | rb_free(client_p->localClient->dnsquery); | |
1009 | client_p->localClient->dnsquery = NULL; | |
1010 | ||
1011 | if (reply == NULL) | |
1012 | { | |
1013 | sendto_realops_snomask(SNO_GENERAL, is_remote_connect(client_p) ? L_NETWIDE : L_ALL, "Cannot resolve hostname for %s", | |
b3ebc7ab | 1014 | client_p->name); |
abe5dd20 JT |
1015 | ilog(L_SERVER, "Cannot resolve hostname for %s", |
1016 | log_client_name(client_p, HIDE_IP)); | |
1017 | exit_client(client_p, client_p, &me, "Cannot resolve hostname"); | |
1018 | return; | |
1019 | } | |
1020 | #ifdef RB_IPV6 | |
1021 | if(reply->addr.ss_family == AF_INET6) | |
1022 | port = ((struct sockaddr_in6 *)&client_p->localClient->ip)->sin6_port; | |
1023 | else | |
1024 | #endif | |
1025 | port = ((struct sockaddr_in *)&client_p->localClient->ip)->sin_port; | |
1026 | memcpy(&client_p->localClient->ip, &reply->addr, sizeof(client_p->localClient->ip)); | |
1027 | #ifdef RB_IPV6 | |
1028 | if(reply->addr.ss_family == AF_INET6) | |
1029 | ((struct sockaddr_in6 *)&client_p->localClient->ip)->sin6_port = port; | |
1030 | else | |
1031 | #endif | |
1032 | ((struct sockaddr_in *)&client_p->localClient->ip)->sin_port = port; | |
1033 | /* Set sockhost properly now -- jilles */ | |
caa4d9d2 | 1034 | rb_inet_ntop_sock((struct sockaddr *)&client_p->localClient->ip, |
abe5dd20 JT |
1035 | client_p->sockhost, sizeof client_p->sockhost); |
1036 | serv_connect_resolved(client_p); | |
1037 | } | |
1038 | ||
212380e3 AC |
1039 | /* |
1040 | * serv_connect() - initiate a server connection | |
1041 | * | |
1042 | * inputs - pointer to conf | |
1043 | * - pointer to client doing the connet | |
1044 | * output - | |
1045 | * side effects - | |
1046 | * | |
1047 | * This code initiates a connection to a server. It first checks to make | |
1048 | * sure the given server exists. If this is the case, it creates a socket, | |
1049 | * creates a client, saves the socket information in the client, and | |
b2f0da88 | 1050 | * initiates a connection to the server through rb_connect_tcp(). The |
212380e3 AC |
1051 | * completion of this goes through serv_completed_connection(). |
1052 | * | |
1053 | * We return 1 if the connection is attempted, since we don't know whether | |
1054 | * it suceeded or not, and 0 if it fails in here somewhere. | |
1055 | */ | |
1056 | int | |
1057 | serv_connect(struct server_conf *server_p, struct Client *by) | |
1058 | { | |
1059 | struct Client *client_p; | |
abe5dd20 | 1060 | struct rb_sockaddr_storage theiripnum; |
6c528b8e | 1061 | rb_fde_t *F; |
6c528b8e | 1062 | char note[HOSTLEN + 10]; |
212380e3 AC |
1063 | |
1064 | s_assert(server_p != NULL); | |
1065 | if(server_p == NULL) | |
1066 | return 0; | |
1067 | ||
1068 | /* | |
1069 | * Make sure this server isn't already connected | |
1070 | */ | |
1071 | if((client_p = find_server(NULL, server_p->name))) | |
1072 | { | |
1073 | sendto_realops_snomask(SNO_GENERAL, L_ALL, | |
1074 | "Server %s already present from %s", | |
b3ebc7ab | 1075 | server_p->name, client_p->name); |
212380e3 AC |
1076 | if(by && IsPerson(by) && !MyClient(by)) |
1077 | sendto_one_notice(by, ":Server %s already present from %s", | |
b3ebc7ab | 1078 | server_p->name, client_p->name); |
212380e3 AC |
1079 | return 0; |
1080 | } | |
1081 | ||
1082 | /* create a socket for the server connection */ | |
75c58138 | 1083 | if((F = rb_socket(server_p->aftype, SOCK_STREAM, 0, NULL)) == NULL) |
212380e3 | 1084 | { |
825ddf13 | 1085 | ilog_error("opening a stream socket"); |
212380e3 AC |
1086 | return 0; |
1087 | } | |
1088 | ||
6c528b8e JT |
1089 | rb_snprintf(note, sizeof note, "Server: %s", server_p->name); |
1090 | rb_note(F, note); | |
212380e3 AC |
1091 | |
1092 | /* Create a local client */ | |
1093 | client_p = make_client(NULL); | |
1094 | ||
1095 | /* Copy in the server, hostname, fd | |
1096 | * The sockhost may be a hostname, this will be corrected later | |
1097 | * -- jilles | |
1098 | */ | |
f427c8b0 VY |
1099 | rb_strlcpy(client_p->name, server_p->name, sizeof(client_p->name)); |
1100 | rb_strlcpy(client_p->host, server_p->host, sizeof(client_p->host)); | |
1101 | rb_strlcpy(client_p->sockhost, server_p->host, sizeof(client_p->sockhost)); | |
6c528b8e | 1102 | client_p->localClient->F = F; |
c6d72037 | 1103 | add_to_cli_fd_hash(client_p); |
212380e3 AC |
1104 | |
1105 | /* | |
1106 | * Set up the initial server evilness, ripped straight from | |
1107 | * connect_server(), so don't blame me for it being evil. | |
1108 | * -- adrian | |
1109 | */ | |
1110 | ||
6c528b8e | 1111 | if(!rb_set_buffers(client_p->localClient->F, READBUF_SIZE)) |
212380e3 | 1112 | { |
825ddf13 | 1113 | ilog_error("setting the buffer size for a server connection"); |
212380e3 AC |
1114 | } |
1115 | ||
1116 | /* | |
1117 | * Attach config entries to client here rather than in | |
1118 | * serv_connect_callback(). This to avoid null pointer references. | |
1119 | */ | |
1120 | attach_server_conf(client_p, server_p); | |
1121 | ||
1122 | /* | |
1123 | * at this point we have a connection in progress and C/N lines | |
1124 | * attached to the client, the socket info should be saved in the | |
1125 | * client and it should either be resolved or have a valid address. | |
1126 | * | |
1127 | * The socket has been connected or connect is in progress. | |
1128 | */ | |
1129 | make_server(client_p); | |
1130 | if(by && IsPerson(by)) | |
1131 | { | |
1132 | strcpy(client_p->serv->by, by->name); | |
1133 | if(client_p->serv->user) | |
1134 | free_user(client_p->serv->user, NULL); | |
1135 | client_p->serv->user = by->user; | |
1136 | by->user->refcnt++; | |
1137 | } | |
1138 | else | |
1139 | { | |
1140 | strcpy(client_p->serv->by, "AutoConn."); | |
1141 | if(client_p->serv->user) | |
1142 | free_user(client_p->serv->user, NULL); | |
1143 | client_p->serv->user = NULL; | |
1144 | } | |
212380e3 | 1145 | SetConnecting(client_p); |
330fc5c1 | 1146 | rb_dlinkAddTail(client_p, &client_p->node, &global_client_list); |
212380e3 | 1147 | |
abe5dd20 | 1148 | if (rb_inet_pton_sock(server_p->host, (struct sockaddr *)&theiripnum) > 0) |
212380e3 | 1149 | { |
abe5dd20 | 1150 | memcpy(&client_p->localClient->ip, &theiripnum, sizeof(client_p->localClient->ip)); |
ccda6e3f | 1151 | #ifdef RB_IPV6 |
abe5dd20 JT |
1152 | if(theiripnum.ss_family == AF_INET6) |
1153 | ((struct sockaddr_in6 *)&client_p->localClient->ip)->sin6_port = htons(server_p->port); | |
1154 | else | |
212380e3 | 1155 | #endif |
abe5dd20 JT |
1156 | ((struct sockaddr_in *)&client_p->localClient->ip)->sin_port = htons(server_p->port); |
1157 | ||
1158 | return serv_connect_resolved(client_p); | |
1159 | } | |
212380e3 AC |
1160 | else |
1161 | { | |
ccda6e3f | 1162 | #ifdef RB_IPV6 |
abe5dd20 JT |
1163 | if(theiripnum.ss_family == AF_INET6) |
1164 | ((struct sockaddr_in6 *)&client_p->localClient->ip)->sin6_port = htons(server_p->port); | |
1165 | else | |
17648928 | 1166 | #endif |
abe5dd20 | 1167 | ((struct sockaddr_in *)&client_p->localClient->ip)->sin_port = htons(server_p->port); |
17648928 | 1168 | |
abe5dd20 JT |
1169 | client_p->localClient->dnsquery = rb_malloc(sizeof(struct DNSQuery)); |
1170 | client_p->localClient->dnsquery->ptr = client_p; | |
1171 | client_p->localClient->dnsquery->callback = serv_connect_dns_callback; | |
1172 | gethost_byname_type(server_p->host, client_p->localClient->dnsquery, | |
ccda6e3f | 1173 | #ifdef RB_IPV6 |
abe5dd20 | 1174 | server_p->aftype == AF_INET6 ? T_AAAA : |
17648928 | 1175 | #endif |
abe5dd20 JT |
1176 | T_A); |
1177 | return 1; | |
1178 | } | |
212380e3 AC |
1179 | } |
1180 | ||
f4a759c5 VY |
1181 | static void |
1182 | serv_connect_ev(void *data) | |
1183 | { | |
1184 | struct Client *client_p = data; | |
1185 | serv_connect_callback(client_p->localClient->F, RB_OK, client_p); | |
c6d72037 VY |
1186 | } |
1187 | ||
f4a759c5 VY |
1188 | static void |
1189 | serv_connect_ssl_callback(rb_fde_t *F, int status, void *data) | |
1190 | { | |
1191 | struct Client *client_p = data; | |
1192 | rb_fde_t *xF[2]; | |
1193 | if(status != RB_OK) | |
1194 | { | |
1195 | /* XXX deal with failure */ | |
1196 | return; | |
1197 | } | |
1198 | rb_connect_sockaddr(F, (struct sockaddr *)&client_p->localClient->ip, sizeof(client_p->localClient->ip)); | |
1199 | rb_socketpair(AF_UNIX, SOCK_STREAM, 0, &xF[0], &xF[1], "Outgoing ssld connection"); | |
1200 | del_from_cli_fd_hash(client_p); | |
1201 | client_p->localClient->F = xF[0]; | |
1202 | add_to_cli_fd_hash(client_p); | |
1203 | ||
1204 | client_p->localClient->ssl_ctl = start_ssld_connect(F, xF[1], rb_get_fd(xF[0])); | |
1205 | SetSSL(client_p); | |
1206 | rb_event_addonce("serv_connect_ev", serv_connect_ev, client_p, 1); | |
c6d72037 VY |
1207 | } |
1208 | ||
212380e3 AC |
1209 | /* |
1210 | * serv_connect_callback() - complete a server connection. | |
1211 | * | |
1212 | * This routine is called after the server connection attempt has | |
1213 | * completed. If unsucessful, an error is sent to ops and the client | |
1214 | * is closed. If sucessful, it goes through the initialisation/check | |
1215 | * procedures, the capabilities are sent, and the socket is then | |
1216 | * marked for reading. | |
1217 | */ | |
1218 | static void | |
6c528b8e | 1219 | serv_connect_callback(rb_fde_t *F, int status, void *data) |
212380e3 AC |
1220 | { |
1221 | struct Client *client_p = data; | |
1222 | struct server_conf *server_p; | |
1223 | char *errstr; | |
1224 | ||
1225 | /* First, make sure its a real client! */ | |
1226 | s_assert(client_p != NULL); | |
6c528b8e | 1227 | s_assert(client_p->localClient->F == F); |
212380e3 AC |
1228 | |
1229 | if(client_p == NULL) | |
1230 | return; | |
1231 | ||
1232 | /* while we were waiting for the callback, its possible this already | |
1233 | * linked in.. --fl | |
1234 | */ | |
1235 | if(find_server(NULL, client_p->name) != NULL) | |
1236 | { | |
1237 | exit_client(client_p, client_p, &me, "Server Exists"); | |
1238 | return; | |
1239 | } | |
1240 | ||
f4a759c5 | 1241 | if(client_p->localClient->ssl_ctl == NULL) |
c6d72037 VY |
1242 | rb_connect_sockaddr(F, (struct sockaddr *)&client_p->localClient->ip, sizeof(client_p->localClient->ip)); |
1243 | ||
212380e3 | 1244 | /* Check the status */ |
6c528b8e | 1245 | if(status != RB_OK) |
212380e3 AC |
1246 | { |
1247 | /* COMM_ERR_TIMEOUT wont have an errno associated with it, | |
1248 | * the others will.. --fl | |
1249 | */ | |
6c528b8e | 1250 | if(status == RB_ERR_TIMEOUT) |
212380e3 AC |
1251 | { |
1252 | sendto_realops_snomask(SNO_GENERAL, is_remote_connect(client_p) ? L_NETWIDE : L_ALL, | |
1253 | "Error connecting to %s[%s]: %s", | |
1254 | client_p->name, | |
212380e3 | 1255 | "255.255.255.255", |
b2f0da88 | 1256 | rb_errstr(status)); |
212380e3 AC |
1257 | ilog(L_SERVER, "Error connecting to %s[%s]: %s", |
1258 | client_p->name, client_p->sockhost, | |
b2f0da88 | 1259 | rb_errstr(status)); |
212380e3 AC |
1260 | } |
1261 | else | |
1262 | { | |
6c528b8e | 1263 | errstr = strerror(rb_get_sockerr(F)); |
212380e3 AC |
1264 | sendto_realops_snomask(SNO_GENERAL, is_remote_connect(client_p) ? L_NETWIDE : L_ALL, |
1265 | "Error connecting to %s[%s]: %s (%s)", | |
1266 | client_p->name, | |
212380e3 | 1267 | "255.255.255.255", |
b2f0da88 | 1268 | rb_errstr(status), errstr); |
212380e3 AC |
1269 | ilog(L_SERVER, "Error connecting to %s[%s]: %s (%s)", |
1270 | client_p->name, client_p->sockhost, | |
b2f0da88 | 1271 | rb_errstr(status), errstr); |
212380e3 AC |
1272 | } |
1273 | ||
b2f0da88 | 1274 | exit_client(client_p, client_p, &me, rb_errstr(status)); |
212380e3 AC |
1275 | return; |
1276 | } | |
1277 | ||
1278 | /* COMM_OK, so continue the connection procedure */ | |
1279 | /* Get the C/N lines */ | |
1280 | if((server_p = client_p->localClient->att_sconf) == NULL) | |
1281 | { | |
1282 | sendto_realops_snomask(SNO_GENERAL, is_remote_connect(client_p) ? L_NETWIDE : L_ALL, "Lost connect{} block for %s", | |
b3ebc7ab | 1283 | client_p->name); |
212380e3 AC |
1284 | exit_client(client_p, client_p, &me, "Lost connect{} block"); |
1285 | return; | |
1286 | } | |
1287 | ||
1288 | /* Next, send the initial handshake */ | |
1289 | SetHandshake(client_p); | |
1290 | ||
1291 | /* kludge, if we're not using TS6, dont ever send | |
1292 | * ourselves as being TS6 capable. | |
1293 | */ | |
1294 | if(!EmptyString(server_p->spasswd)) | |
1295 | { | |
cda8e9b8 AC |
1296 | sendto_one(client_p, "PASS %s TS %d :%s", |
1297 | server_p->spasswd, TS_CURRENT, me.id); | |
212380e3 AC |
1298 | } |
1299 | ||
1300 | /* pass my info to the new server */ | |
1301 | send_capabilities(client_p, default_server_capabs | |
1302 | | (ServerConfCompressed(server_p) ? CAP_ZIP_SUPPORTED : 0) | |
1303 | | (ServerConfTb(server_p) ? CAP_TB : 0)); | |
1304 | ||
1305 | sendto_one(client_p, "SERVER %s 1 :%s%s", | |
1306 | me.name, | |
1307 | ConfigServerHide.hidden ? "(H) " : "", me.info); | |
1308 | ||
1309 | /* | |
1310 | * If we've been marked dead because a send failed, just exit | |
1311 | * here now and save everyone the trouble of us ever existing. | |
1312 | */ | |
1313 | if(IsAnyDead(client_p)) | |
1314 | { | |
1315 | sendto_realops_snomask(SNO_GENERAL, is_remote_connect(client_p) ? L_NETWIDE : L_ALL, | |
1316 | "%s went dead during handshake", client_p->name); | |
1317 | exit_client(client_p, client_p, &me, "Went dead during handshake"); | |
1318 | return; | |
1319 | } | |
1320 | ||
1321 | /* don't move to serv_list yet -- we haven't sent a burst! */ | |
1322 | ||
1323 | /* If we get here, we're ok, so lets start reading some data */ | |
6c528b8e | 1324 | read_packet(F, client_p); |
212380e3 AC |
1325 | } |
1326 | ||
1327 | #ifndef HAVE_SOCKETPAIR | |
1328 | static int | |
1329 | inet_socketpair(int d, int type, int protocol, int sv[2]) | |
1330 | { | |
1331 | struct sockaddr_in addr1, addr2, addr3; | |
1332 | int addr3_len = sizeof(addr3); | |
1333 | int fd, rc; | |
1334 | int port_no = 20000; | |
1335 | ||
1336 | if(d != AF_INET || type != SOCK_STREAM || protocol) | |
1337 | { | |
1338 | errno = EAFNOSUPPORT; | |
1339 | return -1; | |
1340 | } | |
1341 | if(((sv[0] = socket(AF_INET, SOCK_STREAM, 0)) < 0) || ((sv[1] = socket(AF_INET, SOCK_STREAM, 0)) < 0)) | |
1342 | return -1; | |
1343 | ||
1344 | addr1.sin_port = htons(port_no); | |
1345 | addr1.sin_family = AF_INET; | |
1346 | addr1.sin_addr.s_addr = htonl(INADDR_LOOPBACK); | |
1347 | while ((rc = bind (sv[0], (struct sockaddr *) &addr1, sizeof (addr1))) < 0 && errno == EADDRINUSE) | |
1348 | addr1.sin_port = htons(++port_no); | |
1349 | ||
1350 | if(rc < 0) | |
1351 | return -1; | |
1352 | ||
1353 | if(listen(sv[0], 1) < 0) | |
1354 | { | |
1355 | close(sv[0]); | |
1356 | close(sv[1]); | |
1357 | return -1; | |
1358 | } | |
1359 | ||
1360 | addr2.sin_port = htons(port_no); | |
1361 | addr2.sin_family = AF_INET; | |
1362 | addr2.sin_addr.s_addr = htonl(INADDR_LOOPBACK); | |
1363 | if(connect (sv[1], (struct sockaddr *) &addr2, sizeof (addr2)) < 0) | |
1364 | { | |
1365 | close(sv[0]); | |
1366 | close(sv[1]); | |
1367 | return -1; | |
1368 | } | |
1369 | ||
1370 | if((fd = accept(sv[1], (struct sockaddr *) &addr3, &addr3_len)) < 0) | |
1371 | { | |
1372 | close(sv[0]); | |
1373 | close(sv[1]); | |
1374 | return -1; | |
1375 | } | |
1376 | close(sv[0]); | |
1377 | sv[0] = fd; | |
1378 | ||
1379 | return(0); | |
1380 | ||
1381 | } | |
1382 | #endif |