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212380e3 | 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 | 25 | */ |
26 | ||
27 | #include "stdinc.h" | |
28 | ||
29 | #ifdef HAVE_LIBCRYPTO | |
30 | #include <openssl/rsa.h> | |
31 | #endif | |
32 | ||
212380e3 | 33 | #include "s_serv.h" |
34 | #include "class.h" | |
35 | #include "client.h" | |
36 | #include "common.h" | |
212380e3 | 37 | #include "hash.h" |
13ae2f4b | 38 | #include "match.h" |
212380e3 | 39 | #include "ircd.h" |
40 | #include "ircd_defs.h" | |
41 | #include "numeric.h" | |
42 | #include "packet.h" | |
43 | #include "res.h" | |
212380e3 | 44 | #include "s_conf.h" |
45 | #include "s_newconf.h" | |
d3455e2c | 46 | #include "logger.h" |
212380e3 | 47 | #include "s_stats.h" |
48 | #include "s_user.h" | |
49 | #include "scache.h" | |
50 | #include "send.h" | |
51 | #include "client.h" | |
212380e3 | 52 | #include "channel.h" /* chcap_usage_counts stuff... */ |
53 | #include "hook.h" | |
54 | #include "msg.h" | |
54015b5f | 55 | #include "reject.h" |
8db00894 | 56 | #include "sslproc.h" |
212380e3 | 57 | |
212380e3 | 58 | #ifndef INADDR_NONE |
59 | #define INADDR_NONE ((unsigned int) 0xffffffff) | |
60 | #endif | |
61 | ||
212380e3 | 62 | int MaxConnectionCount = 1; |
63 | int MaxClientCount = 1; | |
64 | int refresh_user_links = 0; | |
65 | ||
66 | static char buf[BUFSIZE]; | |
67 | ||
212380e3 | 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 | 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 }, | |
6ce8910d | 90 | { "EOPMOD", CAP_EOPMOD }, |
212380e3 | 91 | {0, 0} |
92 | }; | |
93 | ||
212380e3 | 94 | static CNCB serv_connect_callback; |
8db00894 | 95 | static CNCB serv_connect_ssl_callback; |
212380e3 | 96 | |
97 | /* | |
98 | * hunt_server - Do the basic thing in delivering the message (command) | |
99 | * across the relays to the specific server (server) for | |
100 | * actions. | |
101 | * | |
102 | * Note: The command is a format string and *MUST* be | |
103 | * of prefixed style (e.g. ":%s COMMAND %s ..."). | |
104 | * Command can have only max 8 parameters. | |
105 | * | |
106 | * server parv[server] is the parameter identifying the | |
107 | * target server. | |
108 | * | |
109 | * *WARNING* | |
110 | * parv[server] is replaced with the pointer to the | |
111 | * real servername from the matched client (I'm lazy | |
112 | * now --msa). | |
113 | * | |
114 | * returns: (see #defines) | |
115 | */ | |
116 | int | |
117 | hunt_server(struct Client *client_p, struct Client *source_p, | |
118 | const char *command, int server, int parc, const char *parv[]) | |
119 | { | |
120 | struct Client *target_p; | |
121 | int wilds; | |
af81d5a0 | 122 | rb_dlink_node *ptr; |
212380e3 | 123 | const char *old; |
124 | char *new; | |
125 | ||
126 | /* | |
127 | * Assume it's me, if no server | |
128 | */ | |
129 | if(parc <= server || EmptyString(parv[server]) || | |
4d7a1ee5 | 130 | match(parv[server], me.name) || (strcmp(parv[server], me.id) == 0)) |
212380e3 | 131 | return (HUNTED_ISME); |
132 | ||
133 | new = LOCAL_COPY(parv[server]); | |
134 | ||
135 | /* | |
136 | * These are to pickup matches that would cause the following | |
137 | * message to go in the wrong direction while doing quick fast | |
138 | * non-matching lookups. | |
139 | */ | |
140 | if(MyClient(source_p)) | |
141 | target_p = find_named_client(new); | |
142 | else | |
143 | target_p = find_client(new); | |
144 | ||
145 | if(target_p) | |
146 | if(target_p->from == source_p->from && !MyConnect(target_p)) | |
147 | target_p = NULL; | |
148 | ||
212380e3 | 149 | collapse(new); |
150 | wilds = (strchr(new, '?') || strchr(new, '*')); | |
151 | ||
152 | /* | |
153 | * Again, if there are no wild cards involved in the server | |
154 | * name, use the hash lookup | |
155 | */ | |
f8283571 | 156 | if(!target_p && wilds) |
212380e3 | 157 | { |
f8283571 | 158 | RB_DLINK_FOREACH(ptr, global_client_list.head) |
212380e3 | 159 | { |
f8283571 | 160 | if(match(new, ((struct Client *) (ptr->data))->name)) |
212380e3 | 161 | { |
f8283571 JT |
162 | target_p = ptr->data; |
163 | break; | |
212380e3 | 164 | } |
165 | } | |
166 | } | |
167 | ||
f8283571 JT |
168 | if(target_p && !IsRegistered(target_p)) |
169 | target_p = NULL; | |
170 | ||
212380e3 | 171 | if(target_p) |
172 | { | |
212380e3 | 173 | if(IsMe(target_p) || MyClient(target_p)) |
174 | return HUNTED_ISME; | |
175 | ||
176 | old = parv[server]; | |
177 | parv[server] = get_id(target_p, target_p); | |
178 | ||
179 | sendto_one(target_p, command, get_id(source_p, target_p), | |
180 | parv[1], parv[2], parv[3], parv[4], parv[5], parv[6], parv[7], parv[8]); | |
181 | parv[server] = old; | |
182 | return (HUNTED_PASS); | |
183 | } | |
184 | ||
95d36ef5 | 185 | if(MyClient(source_p) || !IsDigit(parv[server][0])) |
212380e3 | 186 | sendto_one_numeric(source_p, ERR_NOSUCHSERVER, |
187 | form_str(ERR_NOSUCHSERVER), parv[server]); | |
188 | return (HUNTED_NOSUCH); | |
189 | } | |
190 | ||
191 | /* | |
192 | * try_connections - scan through configuration and try new connections. | |
193 | * Returns the calendar time when the next call to this | |
194 | * function should be made latest. (No harm done if this | |
195 | * is called earlier or later...) | |
196 | */ | |
197 | void | |
198 | try_connections(void *unused) | |
199 | { | |
200 | struct Client *client_p; | |
201 | struct server_conf *server_p = NULL; | |
202 | struct server_conf *tmp_p; | |
203 | struct Class *cltmp; | |
af81d5a0 | 204 | rb_dlink_node *ptr; |
212380e3 | 205 | int connecting = FALSE; |
206 | int confrq = 0; | |
207 | time_t next = 0; | |
208 | ||
8e69bb4e | 209 | RB_DLINK_FOREACH(ptr, server_conf_list.head) |
212380e3 | 210 | { |
211 | tmp_p = ptr->data; | |
212 | ||
213 | if(ServerConfIllegal(tmp_p) || !ServerConfAutoconn(tmp_p)) | |
214 | continue; | |
215 | ||
e30b893e VY |
216 | /* don't allow ssl connections if ssl isn't setup */ |
217 | if(ServerConfSSL(tmp_p) && (!ssl_ok || !get_ssld_count())) | |
8db00894 VY |
218 | continue; |
219 | ||
212380e3 | 220 | cltmp = tmp_p->class; |
221 | ||
222 | /* | |
223 | * Skip this entry if the use of it is still on hold until | |
224 | * future. Otherwise handle this entry (and set it on hold | |
225 | * until next time). Will reset only hold times, if already | |
226 | * made one successfull connection... [this algorithm is | |
227 | * a bit fuzzy... -- msa >;) ] | |
228 | */ | |
9f6bbe3c | 229 | if(tmp_p->hold > rb_current_time()) |
212380e3 | 230 | { |
231 | if(next > tmp_p->hold || next == 0) | |
232 | next = tmp_p->hold; | |
233 | continue; | |
234 | } | |
235 | ||
236 | confrq = get_con_freq(cltmp); | |
9f6bbe3c | 237 | tmp_p->hold = rb_current_time() + confrq; |
212380e3 | 238 | |
239 | /* | |
240 | * Found a CONNECT config with port specified, scan clients | |
241 | * and see if this server is already connected? | |
242 | */ | |
243 | client_p = find_server(NULL, tmp_p->name); | |
244 | ||
245 | if(!client_p && (CurrUsers(cltmp) < MaxUsers(cltmp)) && !connecting) | |
246 | { | |
247 | server_p = tmp_p; | |
248 | ||
249 | /* We connect only one at time... */ | |
250 | connecting = TRUE; | |
251 | } | |
252 | ||
253 | if((next > tmp_p->hold) || (next == 0)) | |
254 | next = tmp_p->hold; | |
255 | } | |
256 | ||
257 | /* TODO: change this to set active flag to 0 when added to event! --Habeeb */ | |
258 | if(GlobalSetOptions.autoconn == 0) | |
259 | return; | |
260 | ||
261 | if(!connecting) | |
262 | return; | |
263 | ||
264 | /* move this connect entry to end.. */ | |
af81d5a0 WP |
265 | rb_dlinkDelete(&server_p->node, &server_conf_list); |
266 | rb_dlinkAddTail(server_p, &server_p->node, &server_conf_list); | |
212380e3 | 267 | |
268 | /* | |
269 | * We used to only print this if serv_connect() actually | |
38e6acdd | 270 | * suceeded, but since rb_tcp_connect() can call the callback |
212380e3 | 271 | * immediately if there is an error, we were getting error messages |
272 | * in the wrong order. SO, we just print out the activated line, | |
273 | * and let serv_connect() / serv_connect_callback() print an | |
274 | * error afterwards if it fails. | |
275 | * -- adrian | |
276 | */ | |
212380e3 | 277 | sendto_realops_snomask(SNO_GENERAL, L_ALL, |
278 | "Connection to %s activated", | |
279 | server_p->name); | |
212380e3 | 280 | |
281 | serv_connect(server_p, 0); | |
282 | } | |
283 | ||
284 | int | |
285 | check_server(const char *name, struct Client *client_p) | |
286 | { | |
287 | struct server_conf *server_p = NULL; | |
288 | struct server_conf *tmp_p; | |
af81d5a0 | 289 | rb_dlink_node *ptr; |
212380e3 | 290 | int error = -1; |
291 | ||
292 | s_assert(NULL != client_p); | |
293 | if(client_p == NULL) | |
294 | return error; | |
295 | ||
296 | if(!(client_p->localClient->passwd)) | |
297 | return -2; | |
298 | ||
299 | if(strlen(name) > HOSTLEN) | |
300 | return -4; | |
301 | ||
8e69bb4e | 302 | RB_DLINK_FOREACH(ptr, server_conf_list.head) |
212380e3 | 303 | { |
304 | tmp_p = ptr->data; | |
305 | ||
306 | if(ServerConfIllegal(tmp_p)) | |
307 | continue; | |
308 | ||
309 | if(!match(tmp_p->name, name)) | |
310 | continue; | |
311 | ||
312 | error = -3; | |
313 | ||
314 | /* XXX: Fix me for IPv6 */ | |
315 | /* XXX sockhost is the IPv4 ip as a string */ | |
316 | if(match(tmp_p->host, client_p->host) || | |
317 | match(tmp_p->host, client_p->sockhost)) | |
318 | { | |
319 | error = -2; | |
320 | ||
321 | if(ServerConfEncrypted(tmp_p)) | |
322 | { | |
cd1dea97 | 323 | if(!strcmp(tmp_p->passwd, rb_crypt(client_p->localClient->passwd, |
212380e3 | 324 | tmp_p->passwd))) |
325 | { | |
326 | server_p = tmp_p; | |
327 | break; | |
328 | } | |
329 | } | |
330 | else if(!strcmp(tmp_p->passwd, client_p->localClient->passwd)) | |
331 | { | |
332 | server_p = tmp_p; | |
333 | break; | |
334 | } | |
335 | } | |
336 | } | |
337 | ||
338 | if(server_p == NULL) | |
339 | return error; | |
340 | ||
e30b893e VY |
341 | if(ServerConfSSL(server_p) && client_p->localClient->ssl_ctl == NULL) |
342 | { | |
343 | return -5; | |
8db00894 VY |
344 | } |
345 | ||
212380e3 | 346 | attach_server_conf(client_p, server_p); |
347 | ||
348 | /* clear ZIP/TB if they support but we dont want them */ | |
349 | #ifdef HAVE_LIBZ | |
350 | if(!ServerConfCompressed(server_p)) | |
351 | #endif | |
352 | ClearCap(client_p, CAP_ZIP); | |
353 | ||
354 | if(!ServerConfTb(server_p)) | |
355 | ClearCap(client_p, CAP_TB); | |
356 | ||
357 | return 0; | |
358 | } | |
359 | ||
360 | /* | |
361 | * send_capabilities | |
362 | * | |
363 | * inputs - Client pointer to send to | |
364 | * - int flag of capabilities that this server has | |
365 | * output - NONE | |
366 | * side effects - send the CAPAB line to a server -orabidoo | |
367 | * | |
368 | */ | |
369 | void | |
370 | send_capabilities(struct Client *client_p, int cap_can_send) | |
371 | { | |
372 | struct Capability *cap; | |
373 | char msgbuf[BUFSIZE]; | |
374 | char *t; | |
375 | int tl; | |
376 | ||
377 | t = msgbuf; | |
378 | ||
379 | for (cap = captab; cap->name; ++cap) | |
380 | { | |
381 | if(cap->cap & cap_can_send) | |
382 | { | |
38e6acdd | 383 | tl = rb_sprintf(t, "%s ", cap->name); |
212380e3 | 384 | t += tl; |
385 | } | |
386 | } | |
387 | ||
388 | t--; | |
389 | *t = '\0'; | |
390 | ||
391 | sendto_one(client_p, "CAPAB :%s", msgbuf); | |
392 | } | |
393 | ||
212380e3 | 394 | /* burst_modes_TS6() |
395 | * | |
396 | * input - client to burst to, channel name, list to burst, mode flag | |
397 | * output - | |
398 | * side effects - client is sent a list of +b, +e, or +I modes | |
399 | */ | |
400 | static void | |
401 | burst_modes_TS6(struct Client *client_p, struct Channel *chptr, | |
af81d5a0 | 402 | rb_dlink_list *list, char flag) |
212380e3 | 403 | { |
af81d5a0 | 404 | rb_dlink_node *ptr; |
212380e3 | 405 | struct Ban *banptr; |
406 | char *t; | |
407 | int tlen; | |
408 | int mlen; | |
409 | int cur_len; | |
410 | ||
38e6acdd | 411 | cur_len = mlen = rb_sprintf(buf, ":%s BMASK %ld %s %c :", |
212380e3 | 412 | me.id, (long) chptr->channelts, chptr->chname, flag); |
413 | t = buf + mlen; | |
414 | ||
8e69bb4e | 415 | RB_DLINK_FOREACH(ptr, list->head) |
212380e3 | 416 | { |
417 | banptr = ptr->data; | |
418 | ||
419 | tlen = strlen(banptr->banstr) + 1; | |
420 | ||
421 | /* uh oh */ | |
422 | if(cur_len + tlen > BUFSIZE - 3) | |
423 | { | |
424 | /* the one we're trying to send doesnt fit at all! */ | |
425 | if(cur_len == mlen) | |
426 | { | |
427 | s_assert(0); | |
428 | continue; | |
429 | } | |
430 | ||
431 | /* chop off trailing space and send.. */ | |
432 | *(t-1) = '\0'; | |
433 | sendto_one(client_p, "%s", buf); | |
434 | cur_len = mlen; | |
435 | t = buf + mlen; | |
436 | } | |
437 | ||
38e6acdd | 438 | rb_sprintf(t, "%s ", banptr->banstr); |
212380e3 | 439 | t += tlen; |
440 | cur_len += tlen; | |
441 | } | |
442 | ||
443 | /* cant ever exit the loop above without having modified buf, | |
444 | * chop off trailing space and send. | |
445 | */ | |
446 | *(t-1) = '\0'; | |
447 | sendto_one(client_p, "%s", buf); | |
448 | } | |
449 | ||
212380e3 | 450 | /* |
451 | * burst_TS6 | |
452 | * | |
453 | * inputs - client (server) to send nick towards | |
454 | * - client to send nick for | |
455 | * output - NONE | |
456 | * side effects - NICK message is sent towards given client_p | |
457 | */ | |
458 | static void | |
459 | burst_TS6(struct Client *client_p) | |
460 | { | |
461 | static char ubuf[12]; | |
462 | struct Client *target_p; | |
463 | struct Channel *chptr; | |
464 | struct membership *msptr; | |
465 | hook_data_client hclientinfo; | |
466 | hook_data_channel hchaninfo; | |
af81d5a0 WP |
467 | rb_dlink_node *ptr; |
468 | rb_dlink_node *uptr; | |
212380e3 | 469 | char *t; |
470 | int tlen, mlen; | |
471 | int cur_len = 0; | |
472 | ||
473 | hclientinfo.client = hchaninfo.client = client_p; | |
474 | ||
8e69bb4e | 475 | RB_DLINK_FOREACH(ptr, global_client_list.head) |
212380e3 | 476 | { |
477 | target_p = ptr->data; | |
478 | ||
479 | if(!IsPerson(target_p)) | |
480 | continue; | |
481 | ||
482 | send_umode(NULL, target_p, 0, 0, ubuf); | |
483 | if(!*ubuf) | |
484 | { | |
485 | ubuf[0] = '+'; | |
486 | ubuf[1] = '\0'; | |
487 | } | |
488 | ||
6e749518 | 489 | if(IsCapable(client_p, CAP_EUID)) |
212380e3 | 490 | sendto_one(client_p, ":%s EUID %s %d %ld %s %s %s %s %s %s %s :%s", |
491 | target_p->servptr->id, target_p->name, | |
492 | target_p->hopcount + 1, | |
493 | (long) target_p->tsinfo, ubuf, | |
494 | target_p->username, target_p->host, | |
495 | IsIPSpoof(target_p) ? "0" : target_p->sockhost, | |
496 | target_p->id, | |
497 | IsDynSpoof(target_p) ? target_p->orighost : "*", | |
498 | EmptyString(target_p->user->suser) ? "*" : target_p->user->suser, | |
499 | target_p->info); | |
6e749518 | 500 | else |
212380e3 | 501 | sendto_one(client_p, ":%s UID %s %d %ld %s %s %s %s %s :%s", |
502 | target_p->servptr->id, target_p->name, | |
503 | target_p->hopcount + 1, | |
504 | (long) target_p->tsinfo, ubuf, | |
505 | target_p->username, target_p->host, | |
506 | IsIPSpoof(target_p) ? "0" : target_p->sockhost, | |
507 | target_p->id, target_p->info); | |
6e749518 | 508 | |
54656d76 JT |
509 | if(!EmptyString(target_p->certfp)) |
510 | sendto_one(client_p, ":%s ENCAP * CERTFP :%s", | |
511 | use_id(target_p), target_p->certfp); | |
512 | ||
6e749518 | 513 | if(!IsCapable(client_p, CAP_EUID)) |
212380e3 | 514 | { |
515 | if(IsDynSpoof(target_p)) | |
516 | sendto_one(client_p, ":%s ENCAP * REALHOST %s", | |
517 | use_id(target_p), target_p->orighost); | |
518 | if(!EmptyString(target_p->user->suser)) | |
519 | sendto_one(client_p, ":%s ENCAP * LOGIN %s", | |
520 | use_id(target_p), target_p->user->suser); | |
521 | } | |
522 | ||
c387fc41 | 523 | if(ConfigFileEntry.burst_away && !EmptyString(target_p->user->away)) |
212380e3 | 524 | sendto_one(client_p, ":%s AWAY :%s", |
525 | use_id(target_p), | |
c387fc41 | 526 | target_p->user->away); |
212380e3 | 527 | |
528 | hclientinfo.target = target_p; | |
529 | call_hook(h_burst_client, &hclientinfo); | |
530 | } | |
531 | ||
8e69bb4e | 532 | RB_DLINK_FOREACH(ptr, global_channel_list.head) |
212380e3 | 533 | { |
534 | chptr = ptr->data; | |
535 | ||
536 | if(*chptr->chname != '#') | |
537 | continue; | |
538 | ||
38e6acdd | 539 | cur_len = mlen = rb_sprintf(buf, ":%s SJOIN %ld %s %s :", me.id, |
212380e3 | 540 | (long) chptr->channelts, chptr->chname, |
541 | channel_modes(chptr, client_p)); | |
542 | ||
543 | t = buf + mlen; | |
544 | ||
8e69bb4e | 545 | RB_DLINK_FOREACH(uptr, chptr->members.head) |
212380e3 | 546 | { |
547 | msptr = uptr->data; | |
548 | ||
549 | tlen = strlen(use_id(msptr->client_p)) + 1; | |
550 | if(is_chanop(msptr)) | |
551 | tlen++; | |
552 | if(is_voiced(msptr)) | |
553 | tlen++; | |
554 | ||
555 | if(cur_len + tlen >= BUFSIZE - 3) | |
556 | { | |
557 | *(t-1) = '\0'; | |
558 | sendto_one(client_p, "%s", buf); | |
559 | cur_len = mlen; | |
560 | t = buf + mlen; | |
561 | } | |
562 | ||
38e6acdd | 563 | rb_sprintf(t, "%s%s ", find_channel_status(msptr, 1), |
212380e3 | 564 | use_id(msptr->client_p)); |
565 | ||
566 | cur_len += tlen; | |
567 | t += tlen; | |
568 | } | |
569 | ||
af81d5a0 | 570 | if (rb_dlink_list_length(&chptr->members) > 0) |
212380e3 | 571 | { |
572 | /* remove trailing space */ | |
573 | *(t-1) = '\0'; | |
574 | } | |
575 | sendto_one(client_p, "%s", buf); | |
576 | ||
af81d5a0 | 577 | if(rb_dlink_list_length(&chptr->banlist) > 0) |
212380e3 | 578 | burst_modes_TS6(client_p, chptr, &chptr->banlist, 'b'); |
579 | ||
580 | if(IsCapable(client_p, CAP_EX) && | |
af81d5a0 | 581 | rb_dlink_list_length(&chptr->exceptlist) > 0) |
212380e3 | 582 | burst_modes_TS6(client_p, chptr, &chptr->exceptlist, 'e'); |
583 | ||
584 | if(IsCapable(client_p, CAP_IE) && | |
af81d5a0 | 585 | rb_dlink_list_length(&chptr->invexlist) > 0) |
212380e3 | 586 | burst_modes_TS6(client_p, chptr, &chptr->invexlist, 'I'); |
587 | ||
af81d5a0 | 588 | if(rb_dlink_list_length(&chptr->quietlist) > 0) |
212380e3 | 589 | burst_modes_TS6(client_p, chptr, &chptr->quietlist, 'q'); |
590 | ||
591 | if(IsCapable(client_p, CAP_TB) && chptr->topic != NULL) | |
592 | sendto_one(client_p, ":%s TB %s %ld %s%s:%s", | |
593 | me.id, chptr->chname, (long) chptr->topic_time, | |
594 | ConfigChannel.burst_topicwho ? chptr->topic_info : "", | |
595 | ConfigChannel.burst_topicwho ? " " : "", | |
596 | chptr->topic); | |
597 | ||
598 | hchaninfo.chptr = chptr; | |
599 | call_hook(h_burst_channel, &hchaninfo); | |
600 | } | |
601 | ||
602 | hclientinfo.target = NULL; | |
603 | call_hook(h_burst_finished, &hclientinfo); | |
604 | } | |
605 | ||
606 | /* | |
607 | * show_capabilities - show current server capabilities | |
608 | * | |
609 | * inputs - pointer to an struct Client | |
610 | * output - pointer to static string | |
611 | * side effects - build up string representing capabilities of server listed | |
612 | */ | |
613 | const char * | |
614 | show_capabilities(struct Client *target_p) | |
615 | { | |
616 | static char msgbuf[BUFSIZE]; | |
617 | struct Capability *cap; | |
212380e3 | 618 | |
e30b893e VY |
619 | if(has_id(target_p)) |
620 | rb_strlcpy(msgbuf, " TS6", sizeof(msgbuf)); | |
e30b893e VY |
621 | |
622 | if(IsSSL(target_p)) | |
623 | rb_strlcat(msgbuf, " SSL", sizeof(msgbuf)); | |
212380e3 | 624 | |
625 | if(!IsServer(target_p) || !target_p->serv->caps) /* short circuit if no caps */ | |
e30b893e | 626 | return msgbuf + 1; |
212380e3 | 627 | |
628 | for (cap = captab; cap->cap; ++cap) | |
629 | { | |
630 | if(cap->cap & target_p->serv->caps) | |
e30b893e | 631 | rb_snprintf_append(msgbuf, sizeof(msgbuf), " %s", cap->name); |
212380e3 | 632 | } |
633 | ||
e30b893e | 634 | return msgbuf + 1; |
212380e3 | 635 | } |
636 | ||
637 | /* | |
638 | * server_estab | |
639 | * | |
640 | * inputs - pointer to a struct Client | |
641 | * output - | |
642 | * side effects - | |
643 | */ | |
644 | int | |
645 | server_estab(struct Client *client_p) | |
646 | { | |
647 | struct Client *target_p; | |
648 | struct server_conf *server_p; | |
649 | hook_data_client hdata; | |
650 | char *host; | |
af81d5a0 | 651 | rb_dlink_node *ptr; |
a5497589 | 652 | char note[HOSTLEN + 15]; |
212380e3 | 653 | |
654 | s_assert(NULL != client_p); | |
655 | if(client_p == NULL) | |
656 | return -1; | |
212380e3 | 657 | |
658 | host = client_p->name; | |
659 | ||
660 | if((server_p = client_p->localClient->att_sconf) == NULL) | |
661 | { | |
662 | /* This shouldn't happen, better tell the ops... -A1kmm */ | |
663 | sendto_realops_snomask(SNO_GENERAL, is_remote_connect(client_p) ? L_NETWIDE : L_ALL, | |
664 | "Warning: Lost connect{} block for server %s!", host); | |
665 | return exit_client(client_p, client_p, client_p, "Lost connect{} block!"); | |
666 | } | |
667 | ||
668 | /* We shouldn't have to check this, it should already done before | |
669 | * server_estab is called. -A1kmm | |
670 | */ | |
671 | if(client_p->localClient->passwd) | |
672 | { | |
673 | memset(client_p->localClient->passwd, 0, strlen(client_p->localClient->passwd)); | |
90a3c35b | 674 | rb_free(client_p->localClient->passwd); |
212380e3 | 675 | client_p->localClient->passwd = NULL; |
676 | } | |
677 | ||
678 | /* Its got identd , since its a server */ | |
679 | SetGotId(client_p); | |
680 | ||
681 | /* If there is something in the serv_list, it might be this | |
682 | * connecting server.. | |
683 | */ | |
684 | if(!ServerInfo.hub && serv_list.head) | |
685 | { | |
686 | if(client_p != serv_list.head->data || serv_list.head->next) | |
687 | { | |
83251205 | 688 | ServerStats.is_ref++; |
212380e3 | 689 | sendto_one(client_p, "ERROR :I'm a leaf not a hub"); |
690 | return exit_client(client_p, client_p, client_p, "I'm a leaf"); | |
691 | } | |
692 | } | |
693 | ||
694 | if(IsUnknown(client_p)) | |
695 | { | |
696 | /* | |
697 | * jdc -- 1. Use EmptyString(), not [0] index reference. | |
698 | * 2. Check ->spasswd, not ->passwd. | |
699 | */ | |
700 | if(!EmptyString(server_p->spasswd)) | |
701 | { | |
cda8e9b8 | 702 | sendto_one(client_p, "PASS %s TS %d :%s", |
703 | server_p->spasswd, TS_CURRENT, me.id); | |
212380e3 | 704 | } |
705 | ||
706 | /* pass info to new server */ | |
707 | send_capabilities(client_p, default_server_capabs | |
708 | | (ServerConfCompressed(server_p) ? CAP_ZIP_SUPPORTED : 0) | |
709 | | (ServerConfTb(server_p) ? CAP_TB : 0)); | |
710 | ||
711 | sendto_one(client_p, "SERVER %s 1 :%s%s", | |
712 | me.name, | |
713 | ConfigServerHide.hidden ? "(H) " : "", | |
714 | (me.info[0]) ? (me.info) : "IRCers United"); | |
715 | } | |
716 | ||
a5497589 | 717 | if(!rb_set_buffers(client_p->localClient->F, READBUF_SIZE)) |
d7b7d8bb | 718 | ilog_error("rb_set_buffers failed for server"); |
212380e3 | 719 | |
8db00894 | 720 | /* Enable compression now */ |
e30b893e VY |
721 | if(IsCapable(client_p, CAP_ZIP)) |
722 | { | |
723 | start_zlib_session(client_p); | |
724 | } | |
8a78afe4 | 725 | sendto_one(client_p, "SVINFO %d %d 0 :%ld", TS_CURRENT, TS_MIN, (long int)rb_current_time()); |
212380e3 | 726 | |
727 | client_p->servptr = &me; | |
728 | ||
729 | if(IsAnyDead(client_p)) | |
730 | return CLIENT_EXITED; | |
731 | ||
732 | SetServer(client_p); | |
733 | ||
734 | /* Update the capability combination usage counts */ | |
735 | set_chcap_usage_counts(client_p); | |
736 | ||
af81d5a0 | 737 | rb_dlinkAdd(client_p, &client_p->lnode, &me.serv->servers); |
af81d5a0 WP |
738 | rb_dlinkMoveNode(&client_p->localClient->tnode, &unknown_list, &serv_list); |
739 | rb_dlinkAddTailAlloc(client_p, &global_serv_list); | |
212380e3 | 740 | |
741 | if(has_id(client_p)) | |
742 | add_to_id_hash(client_p->id, client_p); | |
743 | ||
744 | add_to_client_hash(client_p->name, client_p); | |
745 | /* doesnt duplicate client_p->serv if allocated this struct already */ | |
746 | make_server(client_p); | |
212380e3 | 747 | |
748 | client_p->serv->caps = client_p->localClient->caps; | |
749 | ||
750 | if(client_p->localClient->fullcaps) | |
751 | { | |
62d28946 | 752 | client_p->serv->fullcaps = rb_strdup(client_p->localClient->fullcaps); |
90a3c35b | 753 | rb_free(client_p->localClient->fullcaps); |
212380e3 | 754 | client_p->localClient->fullcaps = NULL; |
755 | } | |
756 | ||
994544c2 | 757 | client_p->serv->nameinfo = scache_connect(client_p->name, client_p->info, IsHidden(client_p)); |
9f6bbe3c | 758 | client_p->localClient->firsttime = rb_current_time(); |
212380e3 | 759 | /* fixing eob timings.. -gnp */ |
760 | ||
af81d5a0 | 761 | if((rb_dlink_list_length(&lclient_list) + rb_dlink_list_length(&serv_list)) > |
2f15f871 | 762 | (unsigned long)MaxConnectionCount) |
af81d5a0 WP |
763 | MaxConnectionCount = rb_dlink_list_length(&lclient_list) + |
764 | rb_dlink_list_length(&serv_list); | |
2f15f871 | 765 | |
212380e3 | 766 | /* Show the real host/IP to admins */ |
767 | sendto_realops_snomask(SNO_GENERAL, L_ALL, | |
768 | "Link with %s established: (%s) link", | |
715b28fe | 769 | client_p->name, |
212380e3 | 770 | show_capabilities(client_p)); |
771 | ||
772 | ilog(L_SERVER, "Link with %s established: (%s) link", | |
773 | log_client_name(client_p, SHOW_IP), show_capabilities(client_p)); | |
774 | ||
775 | hdata.client = &me; | |
776 | hdata.target = client_p; | |
777 | call_hook(h_server_introduced, &hdata); | |
778 | ||
e30b893e | 779 | rb_snprintf(note, sizeof(note), "Server: %s", client_p->name); |
8db00894 | 780 | rb_note(client_p->localClient->F, note); |
212380e3 | 781 | |
782 | /* | |
783 | ** Old sendto_serv_but_one() call removed because we now | |
784 | ** need to send different names to different servers | |
785 | ** (domain name matching) Send new server to other servers. | |
786 | */ | |
8e69bb4e | 787 | RB_DLINK_FOREACH(ptr, serv_list.head) |
212380e3 | 788 | { |
789 | target_p = ptr->data; | |
790 | ||
791 | if(target_p == client_p) | |
792 | continue; | |
793 | ||
794 | if(has_id(target_p) && has_id(client_p)) | |
795 | { | |
796 | sendto_one(target_p, ":%s SID %s 2 %s :%s%s", | |
797 | me.id, client_p->name, client_p->id, | |
798 | IsHidden(client_p) ? "(H) " : "", client_p->info); | |
799 | ||
800 | if(IsCapable(target_p, CAP_ENCAP) && | |
801 | !EmptyString(client_p->serv->fullcaps)) | |
802 | sendto_one(target_p, ":%s ENCAP * GCAP :%s", | |
803 | client_p->id, client_p->serv->fullcaps); | |
804 | } | |
805 | else | |
806 | { | |
807 | sendto_one(target_p, ":%s SERVER %s 2 :%s%s", | |
808 | me.name, client_p->name, | |
809 | IsHidden(client_p) ? "(H) " : "", client_p->info); | |
810 | ||
811 | if(IsCapable(target_p, CAP_ENCAP) && | |
812 | !EmptyString(client_p->serv->fullcaps)) | |
813 | sendto_one(target_p, ":%s ENCAP * GCAP :%s", | |
814 | client_p->name, client_p->serv->fullcaps); | |
815 | } | |
816 | } | |
817 | ||
818 | /* | |
819 | ** Pass on my client information to the new server | |
820 | ** | |
821 | ** First, pass only servers (idea is that if the link gets | |
822 | ** cancelled beacause the server was already there, | |
823 | ** there are no NICK's to be cancelled...). Of course, | |
824 | ** if cancellation occurs, all this info is sent anyway, | |
825 | ** and I guess the link dies when a read is attempted...? --msa | |
826 | ** | |
827 | ** Note: Link cancellation to occur at this point means | |
828 | ** that at least two servers from my fragment are building | |
829 | ** up connection this other fragment at the same time, it's | |
830 | ** a race condition, not the normal way of operation... | |
831 | ** | |
832 | ** ALSO NOTE: using the get_client_name for server names-- | |
833 | ** see previous *WARNING*!!! (Also, original inpath | |
834 | ** is destroyed...) | |
835 | */ | |
8e69bb4e | 836 | RB_DLINK_FOREACH(ptr, global_serv_list.head) |
212380e3 | 837 | { |
838 | target_p = ptr->data; | |
839 | ||
840 | /* target_p->from == target_p for target_p == client_p */ | |
841 | if(IsMe(target_p) || target_p->from == client_p) | |
842 | continue; | |
843 | ||
844 | /* presumption, if target has an id, so does its uplink */ | |
845 | if(has_id(client_p) && has_id(target_p)) | |
846 | sendto_one(client_p, ":%s SID %s %d %s :%s%s", | |
66c8fdd2 | 847 | target_p->servptr->id, target_p->name, |
212380e3 | 848 | target_p->hopcount + 1, target_p->id, |
849 | IsHidden(target_p) ? "(H) " : "", target_p->info); | |
850 | else | |
851 | sendto_one(client_p, ":%s SERVER %s %d :%s%s", | |
66c8fdd2 | 852 | target_p->servptr->name, |
212380e3 | 853 | target_p->name, target_p->hopcount + 1, |
854 | IsHidden(target_p) ? "(H) " : "", target_p->info); | |
855 | ||
856 | if(IsCapable(client_p, CAP_ENCAP) && | |
857 | !EmptyString(target_p->serv->fullcaps)) | |
858 | sendto_one(client_p, ":%s ENCAP * GCAP :%s", | |
859 | get_id(target_p, client_p), | |
860 | target_p->serv->fullcaps); | |
861 | } | |
862 | ||
77bf1a04 | 863 | burst_TS6(client_p); |
212380e3 | 864 | |
865 | /* Always send a PING after connect burst is done */ | |
866 | sendto_one(client_p, "PING :%s", get_id(&me, client_p)); | |
867 | ||
868 | free_pre_client(client_p); | |
869 | ||
6f3b6407 | 870 | send_pop_queue(client_p); |
212380e3 | 871 | |
872 | return 0; | |
212380e3 | 873 | } |
874 | ||
875 | /* | |
876 | * New server connection code | |
877 | * Based upon the stuff floating about in s_bsd.c | |
878 | * -- adrian | |
879 | */ | |
880 | ||
cecb5c1e JT |
881 | static int |
882 | serv_connect_resolved(struct Client *client_p) | |
883 | { | |
884 | struct rb_sockaddr_storage myipnum; | |
885 | char vhoststr[HOSTIPLEN]; | |
886 | struct server_conf *server_p; | |
887 | uint16_t port; | |
888 | ||
889 | if((server_p = client_p->localClient->att_sconf) == NULL) | |
890 | { | |
891 | sendto_realops_snomask(SNO_GENERAL, is_remote_connect(client_p) ? L_NETWIDE : L_ALL, "Lost connect{} block for %s", | |
715b28fe | 892 | client_p->name); |
cecb5c1e JT |
893 | exit_client(client_p, client_p, &me, "Lost connect{} block"); |
894 | return 0; | |
895 | } | |
896 | ||
897 | #ifdef RB_IPV6 | |
898 | if(client_p->localClient->ip.ss_family == AF_INET6) | |
899 | port = ntohs(((struct sockaddr_in6 *)&client_p->localClient->ip)->sin6_port); | |
900 | else | |
901 | #endif | |
902 | port = ntohs(((struct sockaddr_in *)&client_p->localClient->ip)->sin_port); | |
903 | ||
904 | if(ServerConfVhosted(server_p)) | |
905 | { | |
906 | memcpy(&myipnum, &server_p->my_ipnum, sizeof(myipnum)); | |
907 | ((struct sockaddr_in *)&myipnum)->sin_port = 0; | |
908 | myipnum.ss_family = server_p->aftype; | |
909 | ||
910 | } | |
911 | else if(server_p->aftype == AF_INET && ServerInfo.specific_ipv4_vhost) | |
912 | { | |
913 | memcpy(&myipnum, &ServerInfo.ip, sizeof(myipnum)); | |
914 | ((struct sockaddr_in *)&myipnum)->sin_port = 0; | |
915 | myipnum.ss_family = AF_INET; | |
916 | SET_SS_LEN(&myipnum, sizeof(struct sockaddr_in)); | |
917 | } | |
918 | ||
919 | #ifdef RB_IPV6 | |
920 | else if((server_p->aftype == AF_INET6) && ServerInfo.specific_ipv6_vhost) | |
921 | { | |
922 | memcpy(&myipnum, &ServerInfo.ip6, sizeof(myipnum)); | |
923 | ((struct sockaddr_in6 *)&myipnum)->sin6_port = 0; | |
924 | myipnum.ss_family = AF_INET6; | |
925 | SET_SS_LEN(&myipnum, sizeof(struct sockaddr_in6)); | |
926 | } | |
927 | #endif | |
928 | else | |
929 | { | |
930 | /* log */ | |
931 | ilog(L_SERVER, "Connecting to %s[%s] port %d (%s)", client_p->name, client_p->sockhost, port, | |
932 | #ifdef RB_IPV6 | |
933 | server_p->aftype == AF_INET6 ? "IPv6" : | |
934 | #endif | |
935 | (server_p->aftype == AF_INET ? "IPv4" : "?")); | |
936 | ||
e30b893e VY |
937 | if(ServerConfSSL(server_p)) |
938 | { | |
939 | rb_connect_tcp(client_p->localClient->F, (struct sockaddr *)&client_p->localClient->ip, | |
940 | NULL, 0, serv_connect_ssl_callback, | |
941 | client_p, ConfigFileEntry.connect_timeout); | |
942 | } | |
943 | else | |
944 | rb_connect_tcp(client_p->localClient->F, (struct sockaddr *)&client_p->localClient->ip, | |
945 | NULL, 0, serv_connect_callback, | |
8db00894 | 946 | client_p, ConfigFileEntry.connect_timeout); |
cecb5c1e JT |
947 | return 1; |
948 | } | |
949 | ||
950 | /* log */ | |
9879cd59 | 951 | rb_inet_ntop_sock((struct sockaddr *)&myipnum, vhoststr, sizeof vhoststr); |
cecb5c1e JT |
952 | ilog(L_SERVER, "Connecting to %s[%s] port %d (%s) (vhost %s)", client_p->name, client_p->sockhost, port, |
953 | #ifdef RB_IPV6 | |
954 | server_p->aftype == AF_INET6 ? "IPv6" : | |
955 | #endif | |
956 | (server_p->aftype == AF_INET ? "IPv4" : "?"), vhoststr); | |
957 | ||
958 | ||
e30b893e VY |
959 | if(ServerConfSSL(server_p)) |
960 | rb_connect_tcp(client_p->localClient->F, (struct sockaddr *)&client_p->localClient->ip, | |
961 | (struct sockaddr *) &myipnum, | |
962 | GET_SS_LEN(&myipnum), serv_connect_ssl_callback, client_p, | |
963 | ConfigFileEntry.connect_timeout); | |
964 | else | |
965 | rb_connect_tcp(client_p->localClient->F, (struct sockaddr *)&client_p->localClient->ip, | |
966 | (struct sockaddr *) &myipnum, | |
967 | GET_SS_LEN(&myipnum), serv_connect_callback, client_p, | |
8db00894 | 968 | ConfigFileEntry.connect_timeout); |
cecb5c1e JT |
969 | |
970 | return 1; | |
971 | } | |
972 | ||
973 | static void | |
974 | serv_connect_dns_callback(void *vptr, struct DNSReply *reply) | |
975 | { | |
976 | struct Client *client_p = vptr; | |
977 | uint16_t port; | |
978 | ||
979 | rb_free(client_p->localClient->dnsquery); | |
980 | client_p->localClient->dnsquery = NULL; | |
981 | ||
982 | if (reply == NULL) | |
983 | { | |
984 | sendto_realops_snomask(SNO_GENERAL, is_remote_connect(client_p) ? L_NETWIDE : L_ALL, "Cannot resolve hostname for %s", | |
715b28fe | 985 | client_p->name); |
cecb5c1e JT |
986 | ilog(L_SERVER, "Cannot resolve hostname for %s", |
987 | log_client_name(client_p, HIDE_IP)); | |
988 | exit_client(client_p, client_p, &me, "Cannot resolve hostname"); | |
989 | return; | |
990 | } | |
991 | #ifdef RB_IPV6 | |
992 | if(reply->addr.ss_family == AF_INET6) | |
993 | port = ((struct sockaddr_in6 *)&client_p->localClient->ip)->sin6_port; | |
994 | else | |
995 | #endif | |
996 | port = ((struct sockaddr_in *)&client_p->localClient->ip)->sin_port; | |
997 | memcpy(&client_p->localClient->ip, &reply->addr, sizeof(client_p->localClient->ip)); | |
998 | #ifdef RB_IPV6 | |
999 | if(reply->addr.ss_family == AF_INET6) | |
1000 | ((struct sockaddr_in6 *)&client_p->localClient->ip)->sin6_port = port; | |
1001 | else | |
1002 | #endif | |
1003 | ((struct sockaddr_in *)&client_p->localClient->ip)->sin_port = port; | |
1004 | /* Set sockhost properly now -- jilles */ | |
9879cd59 | 1005 | rb_inet_ntop_sock((struct sockaddr *)&client_p->localClient->ip, |
cecb5c1e JT |
1006 | client_p->sockhost, sizeof client_p->sockhost); |
1007 | serv_connect_resolved(client_p); | |
1008 | } | |
1009 | ||
212380e3 | 1010 | /* |
1011 | * serv_connect() - initiate a server connection | |
1012 | * | |
1013 | * inputs - pointer to conf | |
1014 | * - pointer to client doing the connet | |
1015 | * output - | |
1016 | * side effects - | |
1017 | * | |
1018 | * This code initiates a connection to a server. It first checks to make | |
1019 | * sure the given server exists. If this is the case, it creates a socket, | |
1020 | * creates a client, saves the socket information in the client, and | |
38e6acdd | 1021 | * initiates a connection to the server through rb_connect_tcp(). The |
212380e3 | 1022 | * completion of this goes through serv_completed_connection(). |
1023 | * | |
1024 | * We return 1 if the connection is attempted, since we don't know whether | |
1025 | * it suceeded or not, and 0 if it fails in here somewhere. | |
1026 | */ | |
1027 | int | |
1028 | serv_connect(struct server_conf *server_p, struct Client *by) | |
1029 | { | |
1030 | struct Client *client_p; | |
cecb5c1e | 1031 | struct rb_sockaddr_storage theiripnum; |
a5497589 | 1032 | rb_fde_t *F; |
a5497589 | 1033 | char note[HOSTLEN + 10]; |
212380e3 | 1034 | |
1035 | s_assert(server_p != NULL); | |
1036 | if(server_p == NULL) | |
1037 | return 0; | |
1038 | ||
1039 | /* | |
1040 | * Make sure this server isn't already connected | |
1041 | */ | |
1042 | if((client_p = find_server(NULL, server_p->name))) | |
1043 | { | |
1044 | sendto_realops_snomask(SNO_GENERAL, L_ALL, | |
1045 | "Server %s already present from %s", | |
715b28fe | 1046 | server_p->name, client_p->name); |
212380e3 | 1047 | if(by && IsPerson(by) && !MyClient(by)) |
1048 | sendto_one_notice(by, ":Server %s already present from %s", | |
715b28fe | 1049 | server_p->name, client_p->name); |
212380e3 | 1050 | return 0; |
1051 | } | |
1052 | ||
1053 | /* create a socket for the server connection */ | |
39aff273 | 1054 | if((F = rb_socket(server_p->aftype, SOCK_STREAM, 0, NULL)) == NULL) |
212380e3 | 1055 | { |
d7b7d8bb | 1056 | ilog_error("opening a stream socket"); |
212380e3 | 1057 | return 0; |
1058 | } | |
1059 | ||
a5497589 JT |
1060 | rb_snprintf(note, sizeof note, "Server: %s", server_p->name); |
1061 | rb_note(F, note); | |
212380e3 | 1062 | |
1063 | /* Create a local client */ | |
1064 | client_p = make_client(NULL); | |
1065 | ||
1066 | /* Copy in the server, hostname, fd | |
1067 | * The sockhost may be a hostname, this will be corrected later | |
1068 | * -- jilles | |
1069 | */ | |
907468c4 VY |
1070 | rb_strlcpy(client_p->name, server_p->name, sizeof(client_p->name)); |
1071 | rb_strlcpy(client_p->host, server_p->host, sizeof(client_p->host)); | |
1072 | rb_strlcpy(client_p->sockhost, server_p->host, sizeof(client_p->sockhost)); | |
a5497589 | 1073 | client_p->localClient->F = F; |
8db00894 | 1074 | add_to_cli_fd_hash(client_p); |
212380e3 | 1075 | |
1076 | /* | |
1077 | * Set up the initial server evilness, ripped straight from | |
1078 | * connect_server(), so don't blame me for it being evil. | |
1079 | * -- adrian | |
1080 | */ | |
1081 | ||
a5497589 | 1082 | if(!rb_set_buffers(client_p->localClient->F, READBUF_SIZE)) |
212380e3 | 1083 | { |
d7b7d8bb | 1084 | ilog_error("setting the buffer size for a server connection"); |
212380e3 | 1085 | } |
1086 | ||
1087 | /* | |
1088 | * Attach config entries to client here rather than in | |
1089 | * serv_connect_callback(). This to avoid null pointer references. | |
1090 | */ | |
1091 | attach_server_conf(client_p, server_p); | |
1092 | ||
1093 | /* | |
1094 | * at this point we have a connection in progress and C/N lines | |
1095 | * attached to the client, the socket info should be saved in the | |
1096 | * client and it should either be resolved or have a valid address. | |
1097 | * | |
1098 | * The socket has been connected or connect is in progress. | |
1099 | */ | |
1100 | make_server(client_p); | |
1101 | if(by && IsPerson(by)) | |
1102 | { | |
1103 | strcpy(client_p->serv->by, by->name); | |
1104 | if(client_p->serv->user) | |
1105 | free_user(client_p->serv->user, NULL); | |
1106 | client_p->serv->user = by->user; | |
1107 | by->user->refcnt++; | |
1108 | } | |
1109 | else | |
1110 | { | |
1111 | strcpy(client_p->serv->by, "AutoConn."); | |
1112 | if(client_p->serv->user) | |
1113 | free_user(client_p->serv->user, NULL); | |
1114 | client_p->serv->user = NULL; | |
1115 | } | |
212380e3 | 1116 | SetConnecting(client_p); |
af81d5a0 | 1117 | rb_dlinkAddTail(client_p, &client_p->node, &global_client_list); |
212380e3 | 1118 | |
cecb5c1e | 1119 | if (rb_inet_pton_sock(server_p->host, (struct sockaddr *)&theiripnum) > 0) |
212380e3 | 1120 | { |
cecb5c1e | 1121 | memcpy(&client_p->localClient->ip, &theiripnum, sizeof(client_p->localClient->ip)); |
2c2e0aa9 | 1122 | #ifdef RB_IPV6 |
cecb5c1e JT |
1123 | if(theiripnum.ss_family == AF_INET6) |
1124 | ((struct sockaddr_in6 *)&client_p->localClient->ip)->sin6_port = htons(server_p->port); | |
1125 | else | |
212380e3 | 1126 | #endif |
cecb5c1e JT |
1127 | ((struct sockaddr_in *)&client_p->localClient->ip)->sin_port = htons(server_p->port); |
1128 | ||
1129 | return serv_connect_resolved(client_p); | |
1130 | } | |
212380e3 | 1131 | else |
1132 | { | |
2c2e0aa9 | 1133 | #ifdef RB_IPV6 |
cecb5c1e JT |
1134 | if(theiripnum.ss_family == AF_INET6) |
1135 | ((struct sockaddr_in6 *)&client_p->localClient->ip)->sin6_port = htons(server_p->port); | |
1136 | else | |
17648928 | 1137 | #endif |
cecb5c1e | 1138 | ((struct sockaddr_in *)&client_p->localClient->ip)->sin_port = htons(server_p->port); |
17648928 | 1139 | |
cecb5c1e JT |
1140 | client_p->localClient->dnsquery = rb_malloc(sizeof(struct DNSQuery)); |
1141 | client_p->localClient->dnsquery->ptr = client_p; | |
1142 | client_p->localClient->dnsquery->callback = serv_connect_dns_callback; | |
1143 | gethost_byname_type(server_p->host, client_p->localClient->dnsquery, | |
2c2e0aa9 | 1144 | #ifdef RB_IPV6 |
cecb5c1e | 1145 | server_p->aftype == AF_INET6 ? T_AAAA : |
17648928 | 1146 | #endif |
cecb5c1e JT |
1147 | T_A); |
1148 | return 1; | |
1149 | } | |
212380e3 | 1150 | } |
1151 | ||
e30b893e VY |
1152 | static void |
1153 | serv_connect_ssl_callback(rb_fde_t *F, int status, void *data) | |
1154 | { | |
1155 | struct Client *client_p = data; | |
1156 | rb_fde_t *xF[2]; | |
faed5542 | 1157 | rb_connect_sockaddr(F, (struct sockaddr *)&client_p->localClient->ip, sizeof(client_p->localClient->ip)); |
e30b893e VY |
1158 | if(status != RB_OK) |
1159 | { | |
faed5542 JT |
1160 | /* Print error message, just like non-SSL. */ |
1161 | serv_connect_callback(F, status, data); | |
e30b893e VY |
1162 | return; |
1163 | } | |
e421505e JT |
1164 | if(rb_socketpair(AF_UNIX, SOCK_STREAM, 0, &xF[0], &xF[1], "Outgoing ssld connection") == -1) |
1165 | { | |
1166 | ilog_error("rb_socketpair failed for server"); | |
1167 | serv_connect_callback(F, RB_ERROR, data); | |
1168 | return; | |
1169 | ||
1170 | } | |
e30b893e VY |
1171 | del_from_cli_fd_hash(client_p); |
1172 | client_p->localClient->F = xF[0]; | |
1173 | add_to_cli_fd_hash(client_p); | |
1174 | ||
1175 | client_p->localClient->ssl_ctl = start_ssld_connect(F, xF[1], rb_get_fd(xF[0])); | |
1176 | SetSSL(client_p); | |
0d093bfe | 1177 | serv_connect_callback(client_p->localClient->F, RB_OK, client_p); |
8db00894 VY |
1178 | } |
1179 | ||
212380e3 | 1180 | /* |
1181 | * serv_connect_callback() - complete a server connection. | |
1182 | * | |
1183 | * This routine is called after the server connection attempt has | |
1184 | * completed. If unsucessful, an error is sent to ops and the client | |
1185 | * is closed. If sucessful, it goes through the initialisation/check | |
1186 | * procedures, the capabilities are sent, and the socket is then | |
1187 | * marked for reading. | |
1188 | */ | |
1189 | static void | |
a5497589 | 1190 | serv_connect_callback(rb_fde_t *F, int status, void *data) |
212380e3 | 1191 | { |
1192 | struct Client *client_p = data; | |
1193 | struct server_conf *server_p; | |
1194 | char *errstr; | |
1195 | ||
1196 | /* First, make sure its a real client! */ | |
1197 | s_assert(client_p != NULL); | |
a5497589 | 1198 | s_assert(client_p->localClient->F == F); |
212380e3 | 1199 | |
1200 | if(client_p == NULL) | |
1201 | return; | |
1202 | ||
1203 | /* while we were waiting for the callback, its possible this already | |
1204 | * linked in.. --fl | |
1205 | */ | |
1206 | if(find_server(NULL, client_p->name) != NULL) | |
1207 | { | |
1208 | exit_client(client_p, client_p, &me, "Server Exists"); | |
1209 | return; | |
1210 | } | |
1211 | ||
e30b893e | 1212 | if(client_p->localClient->ssl_ctl == NULL) |
8db00894 VY |
1213 | rb_connect_sockaddr(F, (struct sockaddr *)&client_p->localClient->ip, sizeof(client_p->localClient->ip)); |
1214 | ||
212380e3 | 1215 | /* Check the status */ |
a5497589 | 1216 | if(status != RB_OK) |
212380e3 | 1217 | { |
1218 | /* COMM_ERR_TIMEOUT wont have an errno associated with it, | |
1219 | * the others will.. --fl | |
1220 | */ | |
a5497589 | 1221 | if(status == RB_ERR_TIMEOUT) |
212380e3 | 1222 | { |
1223 | sendto_realops_snomask(SNO_GENERAL, is_remote_connect(client_p) ? L_NETWIDE : L_ALL, | |
1224 | "Error connecting to %s[%s]: %s", | |
1225 | client_p->name, | |
212380e3 | 1226 | "255.255.255.255", |
38e6acdd | 1227 | rb_errstr(status)); |
212380e3 | 1228 | ilog(L_SERVER, "Error connecting to %s[%s]: %s", |
1229 | client_p->name, client_p->sockhost, | |
38e6acdd | 1230 | rb_errstr(status)); |
212380e3 | 1231 | } |
1232 | else | |
1233 | { | |
a5497589 | 1234 | errstr = strerror(rb_get_sockerr(F)); |
212380e3 | 1235 | sendto_realops_snomask(SNO_GENERAL, is_remote_connect(client_p) ? L_NETWIDE : L_ALL, |
1236 | "Error connecting to %s[%s]: %s (%s)", | |
1237 | client_p->name, | |
212380e3 | 1238 | "255.255.255.255", |
38e6acdd | 1239 | rb_errstr(status), errstr); |
212380e3 | 1240 | ilog(L_SERVER, "Error connecting to %s[%s]: %s (%s)", |
1241 | client_p->name, client_p->sockhost, | |
38e6acdd | 1242 | rb_errstr(status), errstr); |
212380e3 | 1243 | } |
1244 | ||
38e6acdd | 1245 | exit_client(client_p, client_p, &me, rb_errstr(status)); |
212380e3 | 1246 | return; |
1247 | } | |
1248 | ||
1249 | /* COMM_OK, so continue the connection procedure */ | |
1250 | /* Get the C/N lines */ | |
1251 | if((server_p = client_p->localClient->att_sconf) == NULL) | |
1252 | { | |
1253 | sendto_realops_snomask(SNO_GENERAL, is_remote_connect(client_p) ? L_NETWIDE : L_ALL, "Lost connect{} block for %s", | |
715b28fe | 1254 | client_p->name); |
212380e3 | 1255 | exit_client(client_p, client_p, &me, "Lost connect{} block"); |
1256 | return; | |
1257 | } | |
1258 | ||
1259 | /* Next, send the initial handshake */ | |
1260 | SetHandshake(client_p); | |
1261 | ||
212380e3 | 1262 | if(!EmptyString(server_p->spasswd)) |
1263 | { | |
cda8e9b8 | 1264 | sendto_one(client_p, "PASS %s TS %d :%s", |
1265 | server_p->spasswd, TS_CURRENT, me.id); | |
212380e3 | 1266 | } |
1267 | ||
1268 | /* pass my info to the new server */ | |
1269 | send_capabilities(client_p, default_server_capabs | |
1270 | | (ServerConfCompressed(server_p) ? CAP_ZIP_SUPPORTED : 0) | |
1271 | | (ServerConfTb(server_p) ? CAP_TB : 0)); | |
1272 | ||
1273 | sendto_one(client_p, "SERVER %s 1 :%s%s", | |
1274 | me.name, | |
1275 | ConfigServerHide.hidden ? "(H) " : "", me.info); | |
1276 | ||
1277 | /* | |
1278 | * If we've been marked dead because a send failed, just exit | |
1279 | * here now and save everyone the trouble of us ever existing. | |
1280 | */ | |
1281 | if(IsAnyDead(client_p)) | |
1282 | { | |
1283 | sendto_realops_snomask(SNO_GENERAL, is_remote_connect(client_p) ? L_NETWIDE : L_ALL, | |
1284 | "%s went dead during handshake", client_p->name); | |
1285 | exit_client(client_p, client_p, &me, "Went dead during handshake"); | |
1286 | return; | |
1287 | } | |
1288 | ||
1289 | /* don't move to serv_list yet -- we haven't sent a burst! */ | |
1290 | ||
1291 | /* If we get here, we're ok, so lets start reading some data */ | |
a5497589 | 1292 | read_packet(F, client_p); |
212380e3 | 1293 | } |