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212380e3 AC |
1 | /* |
2 | * ircd-ratbox: A slightly useful ircd. | |
3 | * s_serv.c: Server related functions. | |
4 | * | |
5 | * Copyright (C) 1990 Jarkko Oikarinen and University of Oulu, Co Center | |
6 | * Copyright (C) 1996-2002 Hybrid Development Team | |
7 | * Copyright (C) 2002-2005 ircd-ratbox development team | |
8 | * | |
9 | * This program is free software; you can redistribute it and/or modify | |
10 | * it under the terms of the GNU General Public License as published by | |
11 | * the Free Software Foundation; either version 2 of the License, or | |
12 | * (at your option) any later version. | |
13 | * | |
14 | * This program is distributed in the hope that it will be useful, | |
15 | * but WITHOUT ANY WARRANTY; without even the implied warranty of | |
16 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | |
17 | * GNU General Public License for more details. | |
18 | * | |
19 | * You should have received a copy of the GNU General Public License | |
20 | * along with this program; if not, write to the Free Software | |
21 | * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 | |
22 | * USA | |
23 | * | |
cda8e9b8 | 24 | * $Id: s_serv.c 3550 2007-08-09 06:47:26Z nenolod $ |
212380e3 AC |
25 | */ |
26 | ||
27 | #include "stdinc.h" | |
28 | ||
29 | #ifdef HAVE_LIBCRYPTO | |
30 | #include <openssl/rsa.h> | |
31 | #endif | |
32 | ||
212380e3 AC |
33 | #include "s_serv.h" |
34 | #include "class.h" | |
35 | #include "client.h" | |
36 | #include "common.h" | |
212380e3 | 37 | #include "hash.h" |
4562c604 | 38 | #include "match.h" |
212380e3 AC |
39 | #include "ircd.h" |
40 | #include "ircd_defs.h" | |
41 | #include "numeric.h" | |
42 | #include "packet.h" | |
43 | #include "res.h" | |
212380e3 AC |
44 | #include "s_conf.h" |
45 | #include "s_newconf.h" | |
4016731b | 46 | #include "logger.h" |
212380e3 AC |
47 | #include "s_stats.h" |
48 | #include "s_user.h" | |
49 | #include "scache.h" | |
50 | #include "send.h" | |
51 | #include "client.h" | |
212380e3 AC |
52 | #include "channel.h" /* chcap_usage_counts stuff... */ |
53 | #include "hook.h" | |
54 | #include "msg.h" | |
54015b5f | 55 | #include "reject.h" |
c6d72037 | 56 | #include "sslproc.h" |
212380e3 | 57 | |
212380e3 AC |
58 | #ifndef INADDR_NONE |
59 | #define INADDR_NONE ((unsigned int) 0xffffffff) | |
60 | #endif | |
61 | ||
62 | #ifndef HAVE_SOCKETPAIR | |
63 | static int inet_socketpair(int d, int type, int protocol, int sv[2]); | |
64 | #endif | |
65 | ||
66 | int MaxConnectionCount = 1; | |
67 | int MaxClientCount = 1; | |
68 | int refresh_user_links = 0; | |
69 | ||
70 | static char buf[BUFSIZE]; | |
71 | ||
212380e3 AC |
72 | /* |
73 | * list of recognized server capabilities. "TS" is not on the list | |
74 | * because all servers that we talk to already do TS, and the kludged | |
75 | * extra argument to "PASS" takes care of checking that. -orabidoo | |
76 | */ | |
77 | struct Capability captab[] = { | |
78 | /* name cap */ | |
79 | { "QS", CAP_QS }, | |
80 | { "EX", CAP_EX }, | |
81 | { "CHW", CAP_CHW}, | |
82 | { "IE", CAP_IE}, | |
83 | { "KLN", CAP_KLN}, | |
212380e3 AC |
84 | { "KNOCK", CAP_KNOCK}, |
85 | { "ZIP", CAP_ZIP}, | |
86 | { "TB", CAP_TB}, | |
87 | { "UNKLN", CAP_UNKLN}, | |
88 | { "CLUSTER", CAP_CLUSTER}, | |
89 | { "ENCAP", CAP_ENCAP }, | |
90 | { "SERVICES", CAP_SERVICE }, | |
91 | { "RSFNC", CAP_RSFNC }, | |
92 | { "SAVE", CAP_SAVE }, | |
93 | { "EUID", CAP_EUID }, | |
94 | {0, 0} | |
95 | }; | |
96 | ||
212380e3 | 97 | static CNCB serv_connect_callback; |
c6d72037 | 98 | static CNCB serv_connect_ssl_callback; |
212380e3 AC |
99 | |
100 | /* | |
101 | * hunt_server - Do the basic thing in delivering the message (command) | |
102 | * across the relays to the specific server (server) for | |
103 | * actions. | |
104 | * | |
105 | * Note: The command is a format string and *MUST* be | |
106 | * of prefixed style (e.g. ":%s COMMAND %s ..."). | |
107 | * Command can have only max 8 parameters. | |
108 | * | |
109 | * server parv[server] is the parameter identifying the | |
110 | * target server. | |
111 | * | |
112 | * *WARNING* | |
113 | * parv[server] is replaced with the pointer to the | |
114 | * real servername from the matched client (I'm lazy | |
115 | * now --msa). | |
116 | * | |
117 | * returns: (see #defines) | |
118 | */ | |
119 | int | |
120 | hunt_server(struct Client *client_p, struct Client *source_p, | |
121 | const char *command, int server, int parc, const char *parv[]) | |
122 | { | |
123 | struct Client *target_p; | |
124 | int wilds; | |
330fc5c1 | 125 | rb_dlink_node *ptr; |
212380e3 AC |
126 | const char *old; |
127 | char *new; | |
128 | ||
129 | /* | |
130 | * Assume it's me, if no server | |
131 | */ | |
132 | if(parc <= server || EmptyString(parv[server]) || | |
4d7a1ee5 | 133 | match(parv[server], me.name) || (strcmp(parv[server], me.id) == 0)) |
212380e3 AC |
134 | return (HUNTED_ISME); |
135 | ||
136 | new = LOCAL_COPY(parv[server]); | |
137 | ||
138 | /* | |
139 | * These are to pickup matches that would cause the following | |
140 | * message to go in the wrong direction while doing quick fast | |
141 | * non-matching lookups. | |
142 | */ | |
143 | if(MyClient(source_p)) | |
144 | target_p = find_named_client(new); | |
145 | else | |
146 | target_p = find_client(new); | |
147 | ||
148 | if(target_p) | |
149 | if(target_p->from == source_p->from && !MyConnect(target_p)) | |
150 | target_p = NULL; | |
151 | ||
212380e3 AC |
152 | collapse(new); |
153 | wilds = (strchr(new, '?') || strchr(new, '*')); | |
154 | ||
155 | /* | |
156 | * Again, if there are no wild cards involved in the server | |
157 | * name, use the hash lookup | |
158 | */ | |
cd300c1b | 159 | if(!target_p && wilds) |
212380e3 | 160 | { |
cd300c1b | 161 | RB_DLINK_FOREACH(ptr, global_client_list.head) |
212380e3 | 162 | { |
cd300c1b | 163 | if(match(new, ((struct Client *) (ptr->data))->name)) |
212380e3 | 164 | { |
cd300c1b JT |
165 | target_p = ptr->data; |
166 | break; | |
212380e3 AC |
167 | } |
168 | } | |
169 | } | |
170 | ||
cd300c1b JT |
171 | if(target_p && !IsRegistered(target_p)) |
172 | target_p = NULL; | |
173 | ||
212380e3 AC |
174 | if(target_p) |
175 | { | |
212380e3 AC |
176 | if(IsMe(target_p) || MyClient(target_p)) |
177 | return HUNTED_ISME; | |
178 | ||
179 | old = parv[server]; | |
180 | parv[server] = get_id(target_p, target_p); | |
181 | ||
182 | sendto_one(target_p, command, get_id(source_p, target_p), | |
183 | parv[1], parv[2], parv[3], parv[4], parv[5], parv[6], parv[7], parv[8]); | |
184 | parv[server] = old; | |
185 | return (HUNTED_PASS); | |
186 | } | |
187 | ||
95d36ef5 | 188 | if(MyClient(source_p) || !IsDigit(parv[server][0])) |
212380e3 AC |
189 | sendto_one_numeric(source_p, ERR_NOSUCHSERVER, |
190 | form_str(ERR_NOSUCHSERVER), parv[server]); | |
191 | return (HUNTED_NOSUCH); | |
192 | } | |
193 | ||
194 | /* | |
195 | * try_connections - scan through configuration and try new connections. | |
196 | * Returns the calendar time when the next call to this | |
197 | * function should be made latest. (No harm done if this | |
198 | * is called earlier or later...) | |
199 | */ | |
200 | void | |
201 | try_connections(void *unused) | |
202 | { | |
203 | struct Client *client_p; | |
204 | struct server_conf *server_p = NULL; | |
205 | struct server_conf *tmp_p; | |
206 | struct Class *cltmp; | |
330fc5c1 | 207 | rb_dlink_node *ptr; |
212380e3 AC |
208 | int connecting = FALSE; |
209 | int confrq = 0; | |
210 | time_t next = 0; | |
211 | ||
5cefa1d6 | 212 | RB_DLINK_FOREACH(ptr, server_conf_list.head) |
212380e3 AC |
213 | { |
214 | tmp_p = ptr->data; | |
215 | ||
216 | if(ServerConfIllegal(tmp_p) || !ServerConfAutoconn(tmp_p)) | |
217 | continue; | |
218 | ||
f4a759c5 VY |
219 | /* don't allow ssl connections if ssl isn't setup */ |
220 | if(ServerConfSSL(tmp_p) && (!ssl_ok || !get_ssld_count())) | |
c6d72037 VY |
221 | continue; |
222 | ||
212380e3 AC |
223 | cltmp = tmp_p->class; |
224 | ||
225 | /* | |
226 | * Skip this entry if the use of it is still on hold until | |
227 | * future. Otherwise handle this entry (and set it on hold | |
228 | * until next time). Will reset only hold times, if already | |
229 | * made one successfull connection... [this algorithm is | |
230 | * a bit fuzzy... -- msa >;) ] | |
231 | */ | |
e3354945 | 232 | if(tmp_p->hold > rb_current_time()) |
212380e3 AC |
233 | { |
234 | if(next > tmp_p->hold || next == 0) | |
235 | next = tmp_p->hold; | |
236 | continue; | |
237 | } | |
238 | ||
239 | confrq = get_con_freq(cltmp); | |
e3354945 | 240 | tmp_p->hold = rb_current_time() + confrq; |
212380e3 AC |
241 | |
242 | /* | |
243 | * Found a CONNECT config with port specified, scan clients | |
244 | * and see if this server is already connected? | |
245 | */ | |
246 | client_p = find_server(NULL, tmp_p->name); | |
247 | ||
248 | if(!client_p && (CurrUsers(cltmp) < MaxUsers(cltmp)) && !connecting) | |
249 | { | |
250 | server_p = tmp_p; | |
251 | ||
252 | /* We connect only one at time... */ | |
253 | connecting = TRUE; | |
254 | } | |
255 | ||
256 | if((next > tmp_p->hold) || (next == 0)) | |
257 | next = tmp_p->hold; | |
258 | } | |
259 | ||
260 | /* TODO: change this to set active flag to 0 when added to event! --Habeeb */ | |
261 | if(GlobalSetOptions.autoconn == 0) | |
262 | return; | |
263 | ||
264 | if(!connecting) | |
265 | return; | |
266 | ||
267 | /* move this connect entry to end.. */ | |
330fc5c1 AC |
268 | rb_dlinkDelete(&server_p->node, &server_conf_list); |
269 | rb_dlinkAddTail(server_p, &server_p->node, &server_conf_list); | |
212380e3 AC |
270 | |
271 | /* | |
272 | * We used to only print this if serv_connect() actually | |
b2f0da88 | 273 | * suceeded, but since rb_tcp_connect() can call the callback |
212380e3 AC |
274 | * immediately if there is an error, we were getting error messages |
275 | * in the wrong order. SO, we just print out the activated line, | |
276 | * and let serv_connect() / serv_connect_callback() print an | |
277 | * error afterwards if it fails. | |
278 | * -- adrian | |
279 | */ | |
212380e3 AC |
280 | sendto_realops_snomask(SNO_GENERAL, L_ALL, |
281 | "Connection to %s activated", | |
282 | server_p->name); | |
212380e3 AC |
283 | |
284 | serv_connect(server_p, 0); | |
285 | } | |
286 | ||
287 | int | |
288 | check_server(const char *name, struct Client *client_p) | |
289 | { | |
290 | struct server_conf *server_p = NULL; | |
291 | struct server_conf *tmp_p; | |
330fc5c1 | 292 | rb_dlink_node *ptr; |
212380e3 AC |
293 | int error = -1; |
294 | ||
295 | s_assert(NULL != client_p); | |
296 | if(client_p == NULL) | |
297 | return error; | |
298 | ||
299 | if(!(client_p->localClient->passwd)) | |
300 | return -2; | |
301 | ||
302 | if(strlen(name) > HOSTLEN) | |
303 | return -4; | |
304 | ||
5cefa1d6 | 305 | RB_DLINK_FOREACH(ptr, server_conf_list.head) |
212380e3 AC |
306 | { |
307 | tmp_p = ptr->data; | |
308 | ||
309 | if(ServerConfIllegal(tmp_p)) | |
310 | continue; | |
311 | ||
312 | if(!match(tmp_p->name, name)) | |
313 | continue; | |
314 | ||
315 | error = -3; | |
316 | ||
317 | /* XXX: Fix me for IPv6 */ | |
318 | /* XXX sockhost is the IPv4 ip as a string */ | |
319 | if(match(tmp_p->host, client_p->host) || | |
320 | match(tmp_p->host, client_p->sockhost)) | |
321 | { | |
322 | error = -2; | |
323 | ||
324 | if(ServerConfEncrypted(tmp_p)) | |
325 | { | |
ba8b3ff1 | 326 | if(!strcmp(tmp_p->passwd, rb_crypt(client_p->localClient->passwd, |
212380e3 AC |
327 | tmp_p->passwd))) |
328 | { | |
329 | server_p = tmp_p; | |
330 | break; | |
331 | } | |
332 | } | |
333 | else if(!strcmp(tmp_p->passwd, client_p->localClient->passwd)) | |
334 | { | |
335 | server_p = tmp_p; | |
336 | break; | |
337 | } | |
338 | } | |
339 | } | |
340 | ||
341 | if(server_p == NULL) | |
342 | return error; | |
343 | ||
f4a759c5 VY |
344 | if(ServerConfSSL(server_p) && client_p->localClient->ssl_ctl == NULL) |
345 | { | |
346 | return -5; | |
c6d72037 VY |
347 | } |
348 | ||
212380e3 AC |
349 | attach_server_conf(client_p, server_p); |
350 | ||
351 | /* clear ZIP/TB if they support but we dont want them */ | |
352 | #ifdef HAVE_LIBZ | |
353 | if(!ServerConfCompressed(server_p)) | |
354 | #endif | |
355 | ClearCap(client_p, CAP_ZIP); | |
356 | ||
357 | if(!ServerConfTb(server_p)) | |
358 | ClearCap(client_p, CAP_TB); | |
359 | ||
360 | return 0; | |
361 | } | |
362 | ||
363 | /* | |
364 | * send_capabilities | |
365 | * | |
366 | * inputs - Client pointer to send to | |
367 | * - int flag of capabilities that this server has | |
368 | * output - NONE | |
369 | * side effects - send the CAPAB line to a server -orabidoo | |
370 | * | |
371 | */ | |
372 | void | |
373 | send_capabilities(struct Client *client_p, int cap_can_send) | |
374 | { | |
375 | struct Capability *cap; | |
376 | char msgbuf[BUFSIZE]; | |
377 | char *t; | |
378 | int tl; | |
379 | ||
380 | t = msgbuf; | |
381 | ||
382 | for (cap = captab; cap->name; ++cap) | |
383 | { | |
384 | if(cap->cap & cap_can_send) | |
385 | { | |
b2f0da88 | 386 | tl = rb_sprintf(t, "%s ", cap->name); |
212380e3 AC |
387 | t += tl; |
388 | } | |
389 | } | |
390 | ||
391 | t--; | |
392 | *t = '\0'; | |
393 | ||
394 | sendto_one(client_p, "CAPAB :%s", msgbuf); | |
395 | } | |
396 | ||
212380e3 AC |
397 | /* burst_modes_TS6() |
398 | * | |
399 | * input - client to burst to, channel name, list to burst, mode flag | |
400 | * output - | |
401 | * side effects - client is sent a list of +b, +e, or +I modes | |
402 | */ | |
403 | static void | |
404 | burst_modes_TS6(struct Client *client_p, struct Channel *chptr, | |
330fc5c1 | 405 | rb_dlink_list *list, char flag) |
212380e3 | 406 | { |
330fc5c1 | 407 | rb_dlink_node *ptr; |
212380e3 AC |
408 | struct Ban *banptr; |
409 | char *t; | |
410 | int tlen; | |
411 | int mlen; | |
412 | int cur_len; | |
413 | ||
b2f0da88 | 414 | cur_len = mlen = rb_sprintf(buf, ":%s BMASK %ld %s %c :", |
212380e3 AC |
415 | me.id, (long) chptr->channelts, chptr->chname, flag); |
416 | t = buf + mlen; | |
417 | ||
5cefa1d6 | 418 | RB_DLINK_FOREACH(ptr, list->head) |
212380e3 AC |
419 | { |
420 | banptr = ptr->data; | |
421 | ||
422 | tlen = strlen(banptr->banstr) + 1; | |
423 | ||
424 | /* uh oh */ | |
425 | if(cur_len + tlen > BUFSIZE - 3) | |
426 | { | |
427 | /* the one we're trying to send doesnt fit at all! */ | |
428 | if(cur_len == mlen) | |
429 | { | |
430 | s_assert(0); | |
431 | continue; | |
432 | } | |
433 | ||
434 | /* chop off trailing space and send.. */ | |
435 | *(t-1) = '\0'; | |
436 | sendto_one(client_p, "%s", buf); | |
437 | cur_len = mlen; | |
438 | t = buf + mlen; | |
439 | } | |
440 | ||
b2f0da88 | 441 | rb_sprintf(t, "%s ", banptr->banstr); |
212380e3 AC |
442 | t += tlen; |
443 | cur_len += tlen; | |
444 | } | |
445 | ||
446 | /* cant ever exit the loop above without having modified buf, | |
447 | * chop off trailing space and send. | |
448 | */ | |
449 | *(t-1) = '\0'; | |
450 | sendto_one(client_p, "%s", buf); | |
451 | } | |
452 | ||
212380e3 AC |
453 | /* |
454 | * burst_TS6 | |
455 | * | |
456 | * inputs - client (server) to send nick towards | |
457 | * - client to send nick for | |
458 | * output - NONE | |
459 | * side effects - NICK message is sent towards given client_p | |
460 | */ | |
461 | static void | |
462 | burst_TS6(struct Client *client_p) | |
463 | { | |
464 | static char ubuf[12]; | |
465 | struct Client *target_p; | |
466 | struct Channel *chptr; | |
467 | struct membership *msptr; | |
468 | hook_data_client hclientinfo; | |
469 | hook_data_channel hchaninfo; | |
330fc5c1 AC |
470 | rb_dlink_node *ptr; |
471 | rb_dlink_node *uptr; | |
212380e3 AC |
472 | char *t; |
473 | int tlen, mlen; | |
474 | int cur_len = 0; | |
475 | ||
476 | hclientinfo.client = hchaninfo.client = client_p; | |
477 | ||
5cefa1d6 | 478 | RB_DLINK_FOREACH(ptr, global_client_list.head) |
212380e3 AC |
479 | { |
480 | target_p = ptr->data; | |
481 | ||
482 | if(!IsPerson(target_p)) | |
483 | continue; | |
484 | ||
485 | send_umode(NULL, target_p, 0, 0, ubuf); | |
486 | if(!*ubuf) | |
487 | { | |
488 | ubuf[0] = '+'; | |
489 | ubuf[1] = '\0'; | |
490 | } | |
491 | ||
bea2295f | 492 | if(IsCapable(client_p, CAP_EUID)) |
212380e3 AC |
493 | sendto_one(client_p, ":%s EUID %s %d %ld %s %s %s %s %s %s %s :%s", |
494 | target_p->servptr->id, target_p->name, | |
495 | target_p->hopcount + 1, | |
496 | (long) target_p->tsinfo, ubuf, | |
497 | target_p->username, target_p->host, | |
498 | IsIPSpoof(target_p) ? "0" : target_p->sockhost, | |
499 | target_p->id, | |
500 | IsDynSpoof(target_p) ? target_p->orighost : "*", | |
501 | EmptyString(target_p->user->suser) ? "*" : target_p->user->suser, | |
502 | target_p->info); | |
bea2295f | 503 | else |
212380e3 AC |
504 | sendto_one(client_p, ":%s UID %s %d %ld %s %s %s %s %s :%s", |
505 | target_p->servptr->id, target_p->name, | |
506 | target_p->hopcount + 1, | |
507 | (long) target_p->tsinfo, ubuf, | |
508 | target_p->username, target_p->host, | |
509 | IsIPSpoof(target_p) ? "0" : target_p->sockhost, | |
510 | target_p->id, target_p->info); | |
bea2295f JT |
511 | |
512 | if(!IsCapable(client_p, CAP_EUID)) | |
212380e3 AC |
513 | { |
514 | if(IsDynSpoof(target_p)) | |
515 | sendto_one(client_p, ":%s ENCAP * REALHOST %s", | |
516 | use_id(target_p), target_p->orighost); | |
517 | if(!EmptyString(target_p->user->suser)) | |
518 | sendto_one(client_p, ":%s ENCAP * LOGIN %s", | |
519 | use_id(target_p), target_p->user->suser); | |
520 | } | |
521 | ||
522 | if(ConfigFileEntry.burst_away && !EmptyString(target_p->user->away)) | |
523 | sendto_one(client_p, ":%s AWAY :%s", | |
524 | use_id(target_p), | |
525 | target_p->user->away); | |
526 | ||
527 | hclientinfo.target = target_p; | |
528 | call_hook(h_burst_client, &hclientinfo); | |
529 | } | |
530 | ||
5cefa1d6 | 531 | RB_DLINK_FOREACH(ptr, global_channel_list.head) |
212380e3 AC |
532 | { |
533 | chptr = ptr->data; | |
534 | ||
535 | if(*chptr->chname != '#') | |
536 | continue; | |
537 | ||
b2f0da88 | 538 | cur_len = mlen = rb_sprintf(buf, ":%s SJOIN %ld %s %s :", me.id, |
212380e3 AC |
539 | (long) chptr->channelts, chptr->chname, |
540 | channel_modes(chptr, client_p)); | |
541 | ||
542 | t = buf + mlen; | |
543 | ||
5cefa1d6 | 544 | RB_DLINK_FOREACH(uptr, chptr->members.head) |
212380e3 AC |
545 | { |
546 | msptr = uptr->data; | |
547 | ||
548 | tlen = strlen(use_id(msptr->client_p)) + 1; | |
549 | if(is_chanop(msptr)) | |
550 | tlen++; | |
551 | if(is_voiced(msptr)) | |
552 | tlen++; | |
553 | ||
554 | if(cur_len + tlen >= BUFSIZE - 3) | |
555 | { | |
556 | *(t-1) = '\0'; | |
557 | sendto_one(client_p, "%s", buf); | |
558 | cur_len = mlen; | |
559 | t = buf + mlen; | |
560 | } | |
561 | ||
b2f0da88 | 562 | rb_sprintf(t, "%s%s ", find_channel_status(msptr, 1), |
212380e3 AC |
563 | use_id(msptr->client_p)); |
564 | ||
565 | cur_len += tlen; | |
566 | t += tlen; | |
567 | } | |
568 | ||
330fc5c1 | 569 | if (rb_dlink_list_length(&chptr->members) > 0) |
212380e3 AC |
570 | { |
571 | /* remove trailing space */ | |
572 | *(t-1) = '\0'; | |
573 | } | |
574 | sendto_one(client_p, "%s", buf); | |
575 | ||
330fc5c1 | 576 | if(rb_dlink_list_length(&chptr->banlist) > 0) |
212380e3 AC |
577 | burst_modes_TS6(client_p, chptr, &chptr->banlist, 'b'); |
578 | ||
579 | if(IsCapable(client_p, CAP_EX) && | |
330fc5c1 | 580 | rb_dlink_list_length(&chptr->exceptlist) > 0) |
212380e3 AC |
581 | burst_modes_TS6(client_p, chptr, &chptr->exceptlist, 'e'); |
582 | ||
583 | if(IsCapable(client_p, CAP_IE) && | |
330fc5c1 | 584 | rb_dlink_list_length(&chptr->invexlist) > 0) |
212380e3 AC |
585 | burst_modes_TS6(client_p, chptr, &chptr->invexlist, 'I'); |
586 | ||
330fc5c1 | 587 | if(rb_dlink_list_length(&chptr->quietlist) > 0) |
212380e3 AC |
588 | burst_modes_TS6(client_p, chptr, &chptr->quietlist, 'q'); |
589 | ||
590 | if(IsCapable(client_p, CAP_TB) && chptr->topic != NULL) | |
591 | sendto_one(client_p, ":%s TB %s %ld %s%s:%s", | |
592 | me.id, chptr->chname, (long) chptr->topic_time, | |
593 | ConfigChannel.burst_topicwho ? chptr->topic_info : "", | |
594 | ConfigChannel.burst_topicwho ? " " : "", | |
595 | chptr->topic); | |
596 | ||
597 | hchaninfo.chptr = chptr; | |
598 | call_hook(h_burst_channel, &hchaninfo); | |
599 | } | |
600 | ||
601 | hclientinfo.target = NULL; | |
602 | call_hook(h_burst_finished, &hclientinfo); | |
603 | } | |
604 | ||
605 | /* | |
606 | * show_capabilities - show current server capabilities | |
607 | * | |
608 | * inputs - pointer to an struct Client | |
609 | * output - pointer to static string | |
610 | * side effects - build up string representing capabilities of server listed | |
611 | */ | |
612 | const char * | |
613 | show_capabilities(struct Client *target_p) | |
614 | { | |
615 | static char msgbuf[BUFSIZE]; | |
616 | struct Capability *cap; | |
212380e3 | 617 | |
f4a759c5 VY |
618 | if(has_id(target_p)) |
619 | rb_strlcpy(msgbuf, " TS6", sizeof(msgbuf)); | |
f4a759c5 VY |
620 | |
621 | if(IsSSL(target_p)) | |
622 | rb_strlcat(msgbuf, " SSL", sizeof(msgbuf)); | |
212380e3 AC |
623 | |
624 | if(!IsServer(target_p) || !target_p->serv->caps) /* short circuit if no caps */ | |
f4a759c5 | 625 | return msgbuf + 1; |
212380e3 AC |
626 | |
627 | for (cap = captab; cap->cap; ++cap) | |
628 | { | |
629 | if(cap->cap & target_p->serv->caps) | |
f4a759c5 | 630 | rb_snprintf_append(msgbuf, sizeof(msgbuf), " %s", cap->name); |
212380e3 AC |
631 | } |
632 | ||
f4a759c5 | 633 | return msgbuf + 1; |
212380e3 AC |
634 | } |
635 | ||
636 | /* | |
637 | * server_estab | |
638 | * | |
639 | * inputs - pointer to a struct Client | |
640 | * output - | |
641 | * side effects - | |
642 | */ | |
643 | int | |
644 | server_estab(struct Client *client_p) | |
645 | { | |
646 | struct Client *target_p; | |
647 | struct server_conf *server_p; | |
648 | hook_data_client hdata; | |
649 | char *host; | |
330fc5c1 | 650 | rb_dlink_node *ptr; |
6c528b8e | 651 | char note[HOSTLEN + 15]; |
212380e3 AC |
652 | |
653 | s_assert(NULL != client_p); | |
654 | if(client_p == NULL) | |
655 | return -1; | |
212380e3 AC |
656 | |
657 | host = client_p->name; | |
658 | ||
659 | if((server_p = client_p->localClient->att_sconf) == NULL) | |
660 | { | |
661 | /* This shouldn't happen, better tell the ops... -A1kmm */ | |
662 | sendto_realops_snomask(SNO_GENERAL, is_remote_connect(client_p) ? L_NETWIDE : L_ALL, | |
663 | "Warning: Lost connect{} block for server %s!", host); | |
664 | return exit_client(client_p, client_p, client_p, "Lost connect{} block!"); | |
665 | } | |
666 | ||
667 | /* We shouldn't have to check this, it should already done before | |
668 | * server_estab is called. -A1kmm | |
669 | */ | |
670 | if(client_p->localClient->passwd) | |
671 | { | |
672 | memset(client_p->localClient->passwd, 0, strlen(client_p->localClient->passwd)); | |
637c4932 | 673 | rb_free(client_p->localClient->passwd); |
212380e3 AC |
674 | client_p->localClient->passwd = NULL; |
675 | } | |
676 | ||
677 | /* Its got identd , since its a server */ | |
678 | SetGotId(client_p); | |
679 | ||
680 | /* If there is something in the serv_list, it might be this | |
681 | * connecting server.. | |
682 | */ | |
683 | if(!ServerInfo.hub && serv_list.head) | |
684 | { | |
685 | if(client_p != serv_list.head->data || serv_list.head->next) | |
686 | { | |
47adde3d | 687 | ServerStats.is_ref++; |
212380e3 AC |
688 | sendto_one(client_p, "ERROR :I'm a leaf not a hub"); |
689 | return exit_client(client_p, client_p, client_p, "I'm a leaf"); | |
690 | } | |
691 | } | |
692 | ||
693 | if(IsUnknown(client_p)) | |
694 | { | |
695 | /* | |
696 | * jdc -- 1. Use EmptyString(), not [0] index reference. | |
697 | * 2. Check ->spasswd, not ->passwd. | |
698 | */ | |
699 | if(!EmptyString(server_p->spasswd)) | |
700 | { | |
cda8e9b8 AC |
701 | sendto_one(client_p, "PASS %s TS %d :%s", |
702 | server_p->spasswd, TS_CURRENT, me.id); | |
212380e3 AC |
703 | } |
704 | ||
705 | /* pass info to new server */ | |
706 | send_capabilities(client_p, default_server_capabs | |
707 | | (ServerConfCompressed(server_p) ? CAP_ZIP_SUPPORTED : 0) | |
708 | | (ServerConfTb(server_p) ? CAP_TB : 0)); | |
709 | ||
710 | sendto_one(client_p, "SERVER %s 1 :%s%s", | |
711 | me.name, | |
712 | ConfigServerHide.hidden ? "(H) " : "", | |
713 | (me.info[0]) ? (me.info) : "IRCers United"); | |
714 | } | |
715 | ||
6c528b8e | 716 | if(!rb_set_buffers(client_p->localClient->F, READBUF_SIZE)) |
825ddf13 | 717 | ilog_error("rb_set_buffers failed for server"); |
212380e3 | 718 | |
c6d72037 | 719 | /* Enable compression now */ |
f4a759c5 VY |
720 | if(IsCapable(client_p, CAP_ZIP)) |
721 | { | |
722 | start_zlib_session(client_p); | |
723 | } | |
8982edb0 | 724 | sendto_one(client_p, "SVINFO %d %d 0 :%ld", TS_CURRENT, TS_MIN, (long int)rb_current_time()); |
212380e3 AC |
725 | |
726 | client_p->servptr = &me; | |
727 | ||
728 | if(IsAnyDead(client_p)) | |
729 | return CLIENT_EXITED; | |
730 | ||
731 | SetServer(client_p); | |
732 | ||
733 | /* Update the capability combination usage counts */ | |
734 | set_chcap_usage_counts(client_p); | |
735 | ||
330fc5c1 | 736 | rb_dlinkAdd(client_p, &client_p->lnode, &me.serv->servers); |
330fc5c1 AC |
737 | rb_dlinkMoveNode(&client_p->localClient->tnode, &unknown_list, &serv_list); |
738 | rb_dlinkAddTailAlloc(client_p, &global_serv_list); | |
212380e3 AC |
739 | |
740 | if(has_id(client_p)) | |
741 | add_to_id_hash(client_p->id, client_p); | |
742 | ||
743 | add_to_client_hash(client_p->name, client_p); | |
744 | /* doesnt duplicate client_p->serv if allocated this struct already */ | |
745 | make_server(client_p); | |
212380e3 AC |
746 | |
747 | client_p->serv->caps = client_p->localClient->caps; | |
748 | ||
749 | if(client_p->localClient->fullcaps) | |
750 | { | |
47a03750 | 751 | client_p->serv->fullcaps = rb_strdup(client_p->localClient->fullcaps); |
637c4932 | 752 | rb_free(client_p->localClient->fullcaps); |
212380e3 AC |
753 | client_p->localClient->fullcaps = NULL; |
754 | } | |
755 | ||
994544c2 | 756 | client_p->serv->nameinfo = scache_connect(client_p->name, client_p->info, IsHidden(client_p)); |
e3354945 | 757 | client_p->localClient->firsttime = rb_current_time(); |
212380e3 AC |
758 | /* fixing eob timings.. -gnp */ |
759 | ||
330fc5c1 | 760 | if((rb_dlink_list_length(&lclient_list) + rb_dlink_list_length(&serv_list)) > |
2f15f871 | 761 | (unsigned long)MaxConnectionCount) |
330fc5c1 AC |
762 | MaxConnectionCount = rb_dlink_list_length(&lclient_list) + |
763 | rb_dlink_list_length(&serv_list); | |
2f15f871 | 764 | |
212380e3 AC |
765 | /* Show the real host/IP to admins */ |
766 | sendto_realops_snomask(SNO_GENERAL, L_ALL, | |
767 | "Link with %s established: (%s) link", | |
b3ebc7ab | 768 | client_p->name, |
212380e3 AC |
769 | show_capabilities(client_p)); |
770 | ||
771 | ilog(L_SERVER, "Link with %s established: (%s) link", | |
772 | log_client_name(client_p, SHOW_IP), show_capabilities(client_p)); | |
773 | ||
774 | hdata.client = &me; | |
775 | hdata.target = client_p; | |
776 | call_hook(h_server_introduced, &hdata); | |
777 | ||
f4a759c5 | 778 | rb_snprintf(note, sizeof(note), "Server: %s", client_p->name); |
c6d72037 | 779 | rb_note(client_p->localClient->F, note); |
212380e3 AC |
780 | |
781 | /* | |
782 | ** Old sendto_serv_but_one() call removed because we now | |
783 | ** need to send different names to different servers | |
784 | ** (domain name matching) Send new server to other servers. | |
785 | */ | |
5cefa1d6 | 786 | RB_DLINK_FOREACH(ptr, serv_list.head) |
212380e3 AC |
787 | { |
788 | target_p = ptr->data; | |
789 | ||
790 | if(target_p == client_p) | |
791 | continue; | |
792 | ||
793 | if(has_id(target_p) && has_id(client_p)) | |
794 | { | |
795 | sendto_one(target_p, ":%s SID %s 2 %s :%s%s", | |
796 | me.id, client_p->name, client_p->id, | |
797 | IsHidden(client_p) ? "(H) " : "", client_p->info); | |
798 | ||
799 | if(IsCapable(target_p, CAP_ENCAP) && | |
800 | !EmptyString(client_p->serv->fullcaps)) | |
801 | sendto_one(target_p, ":%s ENCAP * GCAP :%s", | |
802 | client_p->id, client_p->serv->fullcaps); | |
803 | } | |
804 | else | |
805 | { | |
806 | sendto_one(target_p, ":%s SERVER %s 2 :%s%s", | |
807 | me.name, client_p->name, | |
808 | IsHidden(client_p) ? "(H) " : "", client_p->info); | |
809 | ||
810 | if(IsCapable(target_p, CAP_ENCAP) && | |
811 | !EmptyString(client_p->serv->fullcaps)) | |
812 | sendto_one(target_p, ":%s ENCAP * GCAP :%s", | |
813 | client_p->name, client_p->serv->fullcaps); | |
814 | } | |
815 | } | |
816 | ||
817 | /* | |
818 | ** Pass on my client information to the new server | |
819 | ** | |
820 | ** First, pass only servers (idea is that if the link gets | |
821 | ** cancelled beacause the server was already there, | |
822 | ** there are no NICK's to be cancelled...). Of course, | |
823 | ** if cancellation occurs, all this info is sent anyway, | |
824 | ** and I guess the link dies when a read is attempted...? --msa | |
825 | ** | |
826 | ** Note: Link cancellation to occur at this point means | |
827 | ** that at least two servers from my fragment are building | |
828 | ** up connection this other fragment at the same time, it's | |
829 | ** a race condition, not the normal way of operation... | |
830 | ** | |
831 | ** ALSO NOTE: using the get_client_name for server names-- | |
832 | ** see previous *WARNING*!!! (Also, original inpath | |
833 | ** is destroyed...) | |
834 | */ | |
5cefa1d6 | 835 | RB_DLINK_FOREACH(ptr, global_serv_list.head) |
212380e3 AC |
836 | { |
837 | target_p = ptr->data; | |
838 | ||
839 | /* target_p->from == target_p for target_p == client_p */ | |
840 | if(IsMe(target_p) || target_p->from == client_p) | |
841 | continue; | |
842 | ||
843 | /* presumption, if target has an id, so does its uplink */ | |
844 | if(has_id(client_p) && has_id(target_p)) | |
845 | sendto_one(client_p, ":%s SID %s %d %s :%s%s", | |
66c8fdd2 | 846 | target_p->servptr->id, target_p->name, |
212380e3 AC |
847 | target_p->hopcount + 1, target_p->id, |
848 | IsHidden(target_p) ? "(H) " : "", target_p->info); | |
849 | else | |
850 | sendto_one(client_p, ":%s SERVER %s %d :%s%s", | |
66c8fdd2 | 851 | target_p->servptr->name, |
212380e3 AC |
852 | target_p->name, target_p->hopcount + 1, |
853 | IsHidden(target_p) ? "(H) " : "", target_p->info); | |
854 | ||
855 | if(IsCapable(client_p, CAP_ENCAP) && | |
856 | !EmptyString(target_p->serv->fullcaps)) | |
857 | sendto_one(client_p, ":%s ENCAP * GCAP :%s", | |
858 | get_id(target_p, client_p), | |
859 | target_p->serv->fullcaps); | |
860 | } | |
861 | ||
7bb8c655 | 862 | burst_TS6(client_p); |
212380e3 AC |
863 | |
864 | /* Always send a PING after connect burst is done */ | |
865 | sendto_one(client_p, "PING :%s", get_id(&me, client_p)); | |
866 | ||
867 | free_pre_client(client_p); | |
868 | ||
0bd120ed | 869 | send_pop_queue(client_p); |
212380e3 AC |
870 | |
871 | return 0; | |
212380e3 AC |
872 | } |
873 | ||
874 | /* | |
875 | * New server connection code | |
876 | * Based upon the stuff floating about in s_bsd.c | |
877 | * -- adrian | |
878 | */ | |
879 | ||
abe5dd20 JT |
880 | static int |
881 | serv_connect_resolved(struct Client *client_p) | |
882 | { | |
883 | struct rb_sockaddr_storage myipnum; | |
884 | char vhoststr[HOSTIPLEN]; | |
885 | struct server_conf *server_p; | |
886 | uint16_t port; | |
887 | ||
888 | if((server_p = client_p->localClient->att_sconf) == NULL) | |
889 | { | |
890 | sendto_realops_snomask(SNO_GENERAL, is_remote_connect(client_p) ? L_NETWIDE : L_ALL, "Lost connect{} block for %s", | |
b3ebc7ab | 891 | client_p->name); |
abe5dd20 JT |
892 | exit_client(client_p, client_p, &me, "Lost connect{} block"); |
893 | return 0; | |
894 | } | |
895 | ||
896 | #ifdef RB_IPV6 | |
897 | if(client_p->localClient->ip.ss_family == AF_INET6) | |
898 | port = ntohs(((struct sockaddr_in6 *)&client_p->localClient->ip)->sin6_port); | |
899 | else | |
900 | #endif | |
901 | port = ntohs(((struct sockaddr_in *)&client_p->localClient->ip)->sin_port); | |
902 | ||
903 | if(ServerConfVhosted(server_p)) | |
904 | { | |
905 | memcpy(&myipnum, &server_p->my_ipnum, sizeof(myipnum)); | |
906 | ((struct sockaddr_in *)&myipnum)->sin_port = 0; | |
907 | myipnum.ss_family = server_p->aftype; | |
908 | ||
909 | } | |
910 | else if(server_p->aftype == AF_INET && ServerInfo.specific_ipv4_vhost) | |
911 | { | |
912 | memcpy(&myipnum, &ServerInfo.ip, sizeof(myipnum)); | |
913 | ((struct sockaddr_in *)&myipnum)->sin_port = 0; | |
914 | myipnum.ss_family = AF_INET; | |
915 | SET_SS_LEN(&myipnum, sizeof(struct sockaddr_in)); | |
916 | } | |
917 | ||
918 | #ifdef RB_IPV6 | |
919 | else if((server_p->aftype == AF_INET6) && ServerInfo.specific_ipv6_vhost) | |
920 | { | |
921 | memcpy(&myipnum, &ServerInfo.ip6, sizeof(myipnum)); | |
922 | ((struct sockaddr_in6 *)&myipnum)->sin6_port = 0; | |
923 | myipnum.ss_family = AF_INET6; | |
924 | SET_SS_LEN(&myipnum, sizeof(struct sockaddr_in6)); | |
925 | } | |
926 | #endif | |
927 | else | |
928 | { | |
929 | /* log */ | |
930 | ilog(L_SERVER, "Connecting to %s[%s] port %d (%s)", client_p->name, client_p->sockhost, port, | |
931 | #ifdef RB_IPV6 | |
932 | server_p->aftype == AF_INET6 ? "IPv6" : | |
933 | #endif | |
934 | (server_p->aftype == AF_INET ? "IPv4" : "?")); | |
935 | ||
f4a759c5 VY |
936 | if(ServerConfSSL(server_p)) |
937 | { | |
938 | rb_connect_tcp(client_p->localClient->F, (struct sockaddr *)&client_p->localClient->ip, | |
939 | NULL, 0, serv_connect_ssl_callback, | |
940 | client_p, ConfigFileEntry.connect_timeout); | |
941 | } | |
942 | else | |
943 | rb_connect_tcp(client_p->localClient->F, (struct sockaddr *)&client_p->localClient->ip, | |
944 | NULL, 0, serv_connect_callback, | |
c6d72037 | 945 | client_p, ConfigFileEntry.connect_timeout); |
abe5dd20 JT |
946 | return 1; |
947 | } | |
948 | ||
949 | /* log */ | |
caa4d9d2 | 950 | rb_inet_ntop_sock((struct sockaddr *)&myipnum, vhoststr, sizeof vhoststr); |
abe5dd20 JT |
951 | ilog(L_SERVER, "Connecting to %s[%s] port %d (%s) (vhost %s)", client_p->name, client_p->sockhost, port, |
952 | #ifdef RB_IPV6 | |
953 | server_p->aftype == AF_INET6 ? "IPv6" : | |
954 | #endif | |
955 | (server_p->aftype == AF_INET ? "IPv4" : "?"), vhoststr); | |
956 | ||
957 | ||
f4a759c5 VY |
958 | if(ServerConfSSL(server_p)) |
959 | rb_connect_tcp(client_p->localClient->F, (struct sockaddr *)&client_p->localClient->ip, | |
960 | (struct sockaddr *) &myipnum, | |
961 | GET_SS_LEN(&myipnum), serv_connect_ssl_callback, client_p, | |
962 | ConfigFileEntry.connect_timeout); | |
963 | else | |
964 | rb_connect_tcp(client_p->localClient->F, (struct sockaddr *)&client_p->localClient->ip, | |
965 | (struct sockaddr *) &myipnum, | |
966 | GET_SS_LEN(&myipnum), serv_connect_callback, client_p, | |
c6d72037 | 967 | ConfigFileEntry.connect_timeout); |
abe5dd20 JT |
968 | |
969 | return 1; | |
970 | } | |
971 | ||
972 | static void | |
973 | serv_connect_dns_callback(void *vptr, struct DNSReply *reply) | |
974 | { | |
975 | struct Client *client_p = vptr; | |
976 | uint16_t port; | |
977 | ||
978 | rb_free(client_p->localClient->dnsquery); | |
979 | client_p->localClient->dnsquery = NULL; | |
980 | ||
981 | if (reply == NULL) | |
982 | { | |
983 | sendto_realops_snomask(SNO_GENERAL, is_remote_connect(client_p) ? L_NETWIDE : L_ALL, "Cannot resolve hostname for %s", | |
b3ebc7ab | 984 | client_p->name); |
abe5dd20 JT |
985 | ilog(L_SERVER, "Cannot resolve hostname for %s", |
986 | log_client_name(client_p, HIDE_IP)); | |
987 | exit_client(client_p, client_p, &me, "Cannot resolve hostname"); | |
988 | return; | |
989 | } | |
990 | #ifdef RB_IPV6 | |
991 | if(reply->addr.ss_family == AF_INET6) | |
992 | port = ((struct sockaddr_in6 *)&client_p->localClient->ip)->sin6_port; | |
993 | else | |
994 | #endif | |
995 | port = ((struct sockaddr_in *)&client_p->localClient->ip)->sin_port; | |
996 | memcpy(&client_p->localClient->ip, &reply->addr, sizeof(client_p->localClient->ip)); | |
997 | #ifdef RB_IPV6 | |
998 | if(reply->addr.ss_family == AF_INET6) | |
999 | ((struct sockaddr_in6 *)&client_p->localClient->ip)->sin6_port = port; | |
1000 | else | |
1001 | #endif | |
1002 | ((struct sockaddr_in *)&client_p->localClient->ip)->sin_port = port; | |
1003 | /* Set sockhost properly now -- jilles */ | |
caa4d9d2 | 1004 | rb_inet_ntop_sock((struct sockaddr *)&client_p->localClient->ip, |
abe5dd20 JT |
1005 | client_p->sockhost, sizeof client_p->sockhost); |
1006 | serv_connect_resolved(client_p); | |
1007 | } | |
1008 | ||
212380e3 AC |
1009 | /* |
1010 | * serv_connect() - initiate a server connection | |
1011 | * | |
1012 | * inputs - pointer to conf | |
1013 | * - pointer to client doing the connet | |
1014 | * output - | |
1015 | * side effects - | |
1016 | * | |
1017 | * This code initiates a connection to a server. It first checks to make | |
1018 | * sure the given server exists. If this is the case, it creates a socket, | |
1019 | * creates a client, saves the socket information in the client, and | |
b2f0da88 | 1020 | * initiates a connection to the server through rb_connect_tcp(). The |
212380e3 AC |
1021 | * completion of this goes through serv_completed_connection(). |
1022 | * | |
1023 | * We return 1 if the connection is attempted, since we don't know whether | |
1024 | * it suceeded or not, and 0 if it fails in here somewhere. | |
1025 | */ | |
1026 | int | |
1027 | serv_connect(struct server_conf *server_p, struct Client *by) | |
1028 | { | |
1029 | struct Client *client_p; | |
abe5dd20 | 1030 | struct rb_sockaddr_storage theiripnum; |
6c528b8e | 1031 | rb_fde_t *F; |
6c528b8e | 1032 | char note[HOSTLEN + 10]; |
212380e3 AC |
1033 | |
1034 | s_assert(server_p != NULL); | |
1035 | if(server_p == NULL) | |
1036 | return 0; | |
1037 | ||
1038 | /* | |
1039 | * Make sure this server isn't already connected | |
1040 | */ | |
1041 | if((client_p = find_server(NULL, server_p->name))) | |
1042 | { | |
1043 | sendto_realops_snomask(SNO_GENERAL, L_ALL, | |
1044 | "Server %s already present from %s", | |
b3ebc7ab | 1045 | server_p->name, client_p->name); |
212380e3 AC |
1046 | if(by && IsPerson(by) && !MyClient(by)) |
1047 | sendto_one_notice(by, ":Server %s already present from %s", | |
b3ebc7ab | 1048 | server_p->name, client_p->name); |
212380e3 AC |
1049 | return 0; |
1050 | } | |
1051 | ||
1052 | /* create a socket for the server connection */ | |
75c58138 | 1053 | if((F = rb_socket(server_p->aftype, SOCK_STREAM, 0, NULL)) == NULL) |
212380e3 | 1054 | { |
825ddf13 | 1055 | ilog_error("opening a stream socket"); |
212380e3 AC |
1056 | return 0; |
1057 | } | |
1058 | ||
6c528b8e JT |
1059 | rb_snprintf(note, sizeof note, "Server: %s", server_p->name); |
1060 | rb_note(F, note); | |
212380e3 AC |
1061 | |
1062 | /* Create a local client */ | |
1063 | client_p = make_client(NULL); | |
1064 | ||
1065 | /* Copy in the server, hostname, fd | |
1066 | * The sockhost may be a hostname, this will be corrected later | |
1067 | * -- jilles | |
1068 | */ | |
f427c8b0 VY |
1069 | rb_strlcpy(client_p->name, server_p->name, sizeof(client_p->name)); |
1070 | rb_strlcpy(client_p->host, server_p->host, sizeof(client_p->host)); | |
1071 | rb_strlcpy(client_p->sockhost, server_p->host, sizeof(client_p->sockhost)); | |
6c528b8e | 1072 | client_p->localClient->F = F; |
c6d72037 | 1073 | add_to_cli_fd_hash(client_p); |
212380e3 AC |
1074 | |
1075 | /* | |
1076 | * Set up the initial server evilness, ripped straight from | |
1077 | * connect_server(), so don't blame me for it being evil. | |
1078 | * -- adrian | |
1079 | */ | |
1080 | ||
6c528b8e | 1081 | if(!rb_set_buffers(client_p->localClient->F, READBUF_SIZE)) |
212380e3 | 1082 | { |
825ddf13 | 1083 | ilog_error("setting the buffer size for a server connection"); |
212380e3 AC |
1084 | } |
1085 | ||
1086 | /* | |
1087 | * Attach config entries to client here rather than in | |
1088 | * serv_connect_callback(). This to avoid null pointer references. | |
1089 | */ | |
1090 | attach_server_conf(client_p, server_p); | |
1091 | ||
1092 | /* | |
1093 | * at this point we have a connection in progress and C/N lines | |
1094 | * attached to the client, the socket info should be saved in the | |
1095 | * client and it should either be resolved or have a valid address. | |
1096 | * | |
1097 | * The socket has been connected or connect is in progress. | |
1098 | */ | |
1099 | make_server(client_p); | |
1100 | if(by && IsPerson(by)) | |
1101 | { | |
1102 | strcpy(client_p->serv->by, by->name); | |
1103 | if(client_p->serv->user) | |
1104 | free_user(client_p->serv->user, NULL); | |
1105 | client_p->serv->user = by->user; | |
1106 | by->user->refcnt++; | |
1107 | } | |
1108 | else | |
1109 | { | |
1110 | strcpy(client_p->serv->by, "AutoConn."); | |
1111 | if(client_p->serv->user) | |
1112 | free_user(client_p->serv->user, NULL); | |
1113 | client_p->serv->user = NULL; | |
1114 | } | |
212380e3 | 1115 | SetConnecting(client_p); |
330fc5c1 | 1116 | rb_dlinkAddTail(client_p, &client_p->node, &global_client_list); |
212380e3 | 1117 | |
abe5dd20 | 1118 | if (rb_inet_pton_sock(server_p->host, (struct sockaddr *)&theiripnum) > 0) |
212380e3 | 1119 | { |
abe5dd20 | 1120 | memcpy(&client_p->localClient->ip, &theiripnum, sizeof(client_p->localClient->ip)); |
ccda6e3f | 1121 | #ifdef RB_IPV6 |
abe5dd20 JT |
1122 | if(theiripnum.ss_family == AF_INET6) |
1123 | ((struct sockaddr_in6 *)&client_p->localClient->ip)->sin6_port = htons(server_p->port); | |
1124 | else | |
212380e3 | 1125 | #endif |
abe5dd20 JT |
1126 | ((struct sockaddr_in *)&client_p->localClient->ip)->sin_port = htons(server_p->port); |
1127 | ||
1128 | return serv_connect_resolved(client_p); | |
1129 | } | |
212380e3 AC |
1130 | else |
1131 | { | |
ccda6e3f | 1132 | #ifdef RB_IPV6 |
abe5dd20 JT |
1133 | if(theiripnum.ss_family == AF_INET6) |
1134 | ((struct sockaddr_in6 *)&client_p->localClient->ip)->sin6_port = htons(server_p->port); | |
1135 | else | |
17648928 | 1136 | #endif |
abe5dd20 | 1137 | ((struct sockaddr_in *)&client_p->localClient->ip)->sin_port = htons(server_p->port); |
17648928 | 1138 | |
abe5dd20 JT |
1139 | client_p->localClient->dnsquery = rb_malloc(sizeof(struct DNSQuery)); |
1140 | client_p->localClient->dnsquery->ptr = client_p; | |
1141 | client_p->localClient->dnsquery->callback = serv_connect_dns_callback; | |
1142 | gethost_byname_type(server_p->host, client_p->localClient->dnsquery, | |
ccda6e3f | 1143 | #ifdef RB_IPV6 |
abe5dd20 | 1144 | server_p->aftype == AF_INET6 ? T_AAAA : |
17648928 | 1145 | #endif |
abe5dd20 JT |
1146 | T_A); |
1147 | return 1; | |
1148 | } | |
212380e3 AC |
1149 | } |
1150 | ||
f4a759c5 VY |
1151 | static void |
1152 | serv_connect_ssl_callback(rb_fde_t *F, int status, void *data) | |
1153 | { | |
1154 | struct Client *client_p = data; | |
1155 | rb_fde_t *xF[2]; | |
9ec51326 | 1156 | rb_connect_sockaddr(F, (struct sockaddr *)&client_p->localClient->ip, sizeof(client_p->localClient->ip)); |
f4a759c5 VY |
1157 | if(status != RB_OK) |
1158 | { | |
9ec51326 JT |
1159 | /* Print error message, just like non-SSL. */ |
1160 | serv_connect_callback(F, status, data); | |
f4a759c5 VY |
1161 | return; |
1162 | } | |
f4a759c5 VY |
1163 | rb_socketpair(AF_UNIX, SOCK_STREAM, 0, &xF[0], &xF[1], "Outgoing ssld connection"); |
1164 | del_from_cli_fd_hash(client_p); | |
1165 | client_p->localClient->F = xF[0]; | |
1166 | add_to_cli_fd_hash(client_p); | |
1167 | ||
1168 | client_p->localClient->ssl_ctl = start_ssld_connect(F, xF[1], rb_get_fd(xF[0])); | |
1169 | SetSSL(client_p); | |
39452169 | 1170 | serv_connect_callback(client_p->localClient->F, RB_OK, client_p); |
c6d72037 VY |
1171 | } |
1172 | ||
212380e3 AC |
1173 | /* |
1174 | * serv_connect_callback() - complete a server connection. | |
1175 | * | |
1176 | * This routine is called after the server connection attempt has | |
1177 | * completed. If unsucessful, an error is sent to ops and the client | |
1178 | * is closed. If sucessful, it goes through the initialisation/check | |
1179 | * procedures, the capabilities are sent, and the socket is then | |
1180 | * marked for reading. | |
1181 | */ | |
1182 | static void | |
6c528b8e | 1183 | serv_connect_callback(rb_fde_t *F, int status, void *data) |
212380e3 AC |
1184 | { |
1185 | struct Client *client_p = data; | |
1186 | struct server_conf *server_p; | |
1187 | char *errstr; | |
1188 | ||
1189 | /* First, make sure its a real client! */ | |
1190 | s_assert(client_p != NULL); | |
6c528b8e | 1191 | s_assert(client_p->localClient->F == F); |
212380e3 AC |
1192 | |
1193 | if(client_p == NULL) | |
1194 | return; | |
1195 | ||
1196 | /* while we were waiting for the callback, its possible this already | |
1197 | * linked in.. --fl | |
1198 | */ | |
1199 | if(find_server(NULL, client_p->name) != NULL) | |
1200 | { | |
1201 | exit_client(client_p, client_p, &me, "Server Exists"); | |
1202 | return; | |
1203 | } | |
1204 | ||
f4a759c5 | 1205 | if(client_p->localClient->ssl_ctl == NULL) |
c6d72037 VY |
1206 | rb_connect_sockaddr(F, (struct sockaddr *)&client_p->localClient->ip, sizeof(client_p->localClient->ip)); |
1207 | ||
212380e3 | 1208 | /* Check the status */ |
6c528b8e | 1209 | if(status != RB_OK) |
212380e3 AC |
1210 | { |
1211 | /* COMM_ERR_TIMEOUT wont have an errno associated with it, | |
1212 | * the others will.. --fl | |
1213 | */ | |
6c528b8e | 1214 | if(status == RB_ERR_TIMEOUT) |
212380e3 AC |
1215 | { |
1216 | sendto_realops_snomask(SNO_GENERAL, is_remote_connect(client_p) ? L_NETWIDE : L_ALL, | |
1217 | "Error connecting to %s[%s]: %s", | |
1218 | client_p->name, | |
212380e3 | 1219 | "255.255.255.255", |
b2f0da88 | 1220 | rb_errstr(status)); |
212380e3 AC |
1221 | ilog(L_SERVER, "Error connecting to %s[%s]: %s", |
1222 | client_p->name, client_p->sockhost, | |
b2f0da88 | 1223 | rb_errstr(status)); |
212380e3 AC |
1224 | } |
1225 | else | |
1226 | { | |
6c528b8e | 1227 | errstr = strerror(rb_get_sockerr(F)); |
212380e3 AC |
1228 | sendto_realops_snomask(SNO_GENERAL, is_remote_connect(client_p) ? L_NETWIDE : L_ALL, |
1229 | "Error connecting to %s[%s]: %s (%s)", | |
1230 | client_p->name, | |
212380e3 | 1231 | "255.255.255.255", |
b2f0da88 | 1232 | rb_errstr(status), errstr); |
212380e3 AC |
1233 | ilog(L_SERVER, "Error connecting to %s[%s]: %s (%s)", |
1234 | client_p->name, client_p->sockhost, | |
b2f0da88 | 1235 | rb_errstr(status), errstr); |
212380e3 AC |
1236 | } |
1237 | ||
b2f0da88 | 1238 | exit_client(client_p, client_p, &me, rb_errstr(status)); |
212380e3 AC |
1239 | return; |
1240 | } | |
1241 | ||
1242 | /* COMM_OK, so continue the connection procedure */ | |
1243 | /* Get the C/N lines */ | |
1244 | if((server_p = client_p->localClient->att_sconf) == NULL) | |
1245 | { | |
1246 | sendto_realops_snomask(SNO_GENERAL, is_remote_connect(client_p) ? L_NETWIDE : L_ALL, "Lost connect{} block for %s", | |
b3ebc7ab | 1247 | client_p->name); |
212380e3 AC |
1248 | exit_client(client_p, client_p, &me, "Lost connect{} block"); |
1249 | return; | |
1250 | } | |
1251 | ||
1252 | /* Next, send the initial handshake */ | |
1253 | SetHandshake(client_p); | |
1254 | ||
212380e3 AC |
1255 | if(!EmptyString(server_p->spasswd)) |
1256 | { | |
cda8e9b8 AC |
1257 | sendto_one(client_p, "PASS %s TS %d :%s", |
1258 | server_p->spasswd, TS_CURRENT, me.id); | |
212380e3 AC |
1259 | } |
1260 | ||
1261 | /* pass my info to the new server */ | |
1262 | send_capabilities(client_p, default_server_capabs | |
1263 | | (ServerConfCompressed(server_p) ? CAP_ZIP_SUPPORTED : 0) | |
1264 | | (ServerConfTb(server_p) ? CAP_TB : 0)); | |
1265 | ||
1266 | sendto_one(client_p, "SERVER %s 1 :%s%s", | |
1267 | me.name, | |
1268 | ConfigServerHide.hidden ? "(H) " : "", me.info); | |
1269 | ||
1270 | /* | |
1271 | * If we've been marked dead because a send failed, just exit | |
1272 | * here now and save everyone the trouble of us ever existing. | |
1273 | */ | |
1274 | if(IsAnyDead(client_p)) | |
1275 | { | |
1276 | sendto_realops_snomask(SNO_GENERAL, is_remote_connect(client_p) ? L_NETWIDE : L_ALL, | |
1277 | "%s went dead during handshake", client_p->name); | |
1278 | exit_client(client_p, client_p, &me, "Went dead during handshake"); | |
1279 | return; | |
1280 | } | |
1281 | ||
1282 | /* don't move to serv_list yet -- we haven't sent a burst! */ | |
1283 | ||
1284 | /* If we get here, we're ok, so lets start reading some data */ | |
6c528b8e | 1285 | read_packet(F, client_p); |
212380e3 AC |
1286 | } |
1287 | ||
1288 | #ifndef HAVE_SOCKETPAIR | |
1289 | static int | |
1290 | inet_socketpair(int d, int type, int protocol, int sv[2]) | |
1291 | { | |
1292 | struct sockaddr_in addr1, addr2, addr3; | |
1293 | int addr3_len = sizeof(addr3); | |
1294 | int fd, rc; | |
1295 | int port_no = 20000; | |
1296 | ||
1297 | if(d != AF_INET || type != SOCK_STREAM || protocol) | |
1298 | { | |
1299 | errno = EAFNOSUPPORT; | |
1300 | return -1; | |
1301 | } | |
1302 | if(((sv[0] = socket(AF_INET, SOCK_STREAM, 0)) < 0) || ((sv[1] = socket(AF_INET, SOCK_STREAM, 0)) < 0)) | |
1303 | return -1; | |
1304 | ||
1305 | addr1.sin_port = htons(port_no); | |
1306 | addr1.sin_family = AF_INET; | |
1307 | addr1.sin_addr.s_addr = htonl(INADDR_LOOPBACK); | |
1308 | while ((rc = bind (sv[0], (struct sockaddr *) &addr1, sizeof (addr1))) < 0 && errno == EADDRINUSE) | |
1309 | addr1.sin_port = htons(++port_no); | |
1310 | ||
1311 | if(rc < 0) | |
1312 | return -1; | |
1313 | ||
1314 | if(listen(sv[0], 1) < 0) | |
1315 | { | |
1316 | close(sv[0]); | |
1317 | close(sv[1]); | |
1318 | return -1; | |
1319 | } | |
1320 | ||
1321 | addr2.sin_port = htons(port_no); | |
1322 | addr2.sin_family = AF_INET; | |
1323 | addr2.sin_addr.s_addr = htonl(INADDR_LOOPBACK); | |
1324 | if(connect (sv[1], (struct sockaddr *) &addr2, sizeof (addr2)) < 0) | |
1325 | { | |
1326 | close(sv[0]); | |
1327 | close(sv[1]); | |
1328 | return -1; | |
1329 | } | |
1330 | ||
1331 | if((fd = accept(sv[1], (struct sockaddr *) &addr3, &addr3_len)) < 0) | |
1332 | { | |
1333 | close(sv[0]); | |
1334 | close(sv[1]); | |
1335 | return -1; | |
1336 | } | |
1337 | close(sv[0]); | |
1338 | sv[0] = fd; | |
1339 | ||
1340 | return(0); | |
1341 | ||
1342 | } | |
1343 | #endif |