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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" |
346fba92 | 57 | #include "capability.h" |
212380e3 | 58 | |
212380e3 AC |
59 | #ifndef INADDR_NONE |
60 | #define INADDR_NONE ((unsigned int) 0xffffffff) | |
61 | #endif | |
62 | ||
212380e3 AC |
63 | int MaxConnectionCount = 1; |
64 | int MaxClientCount = 1; | |
65 | int refresh_user_links = 0; | |
66 | ||
67 | static char buf[BUFSIZE]; | |
68 | ||
212380e3 AC |
69 | /* |
70 | * list of recognized server capabilities. "TS" is not on the list | |
71 | * because all servers that we talk to already do TS, and the kludged | |
72 | * extra argument to "PASS" takes care of checking that. -orabidoo | |
73 | */ | |
346fba92 AC |
74 | struct CapabilityIndex *serv_capindex = NULL; |
75 | ||
76 | unsigned int CAP_CAP; | |
77 | unsigned int CAP_QS; | |
78 | unsigned int CAP_EX; | |
79 | unsigned int CAP_CHW; | |
80 | unsigned int CAP_IE; | |
81 | unsigned int CAP_KLN; | |
82 | unsigned int CAP_ZIP; | |
83 | unsigned int CAP_KNOCK; | |
84 | unsigned int CAP_TB; | |
85 | unsigned int CAP_UNKLN; | |
86 | unsigned int CAP_CLUSTER; | |
87 | unsigned int CAP_ENCAP; | |
88 | unsigned int CAP_TS6; | |
89 | unsigned int CAP_SERVICE; | |
90 | unsigned int CAP_RSFNC; | |
91 | unsigned int CAP_SAVE; | |
92 | unsigned int CAP_EUID; | |
93 | unsigned int CAP_EOPMOD; | |
94 | unsigned int CAP_BAN; | |
95 | unsigned int CAP_MLOCK; | |
96 | ||
97 | /* | |
98 | * initialize our builtin capability table. --nenolod | |
99 | */ | |
100 | void | |
101 | init_builtin_capabs(void) | |
102 | { | |
103 | serv_capindex = capability_index_create(); | |
104 | ||
105 | CAP_QS = capability_put(serv_capindex, "QS"); | |
106 | CAP_EX = capability_put(serv_capindex, "EX"); | |
107 | CAP_CHW = capability_put(serv_capindex, "CHW"); | |
108 | CAP_IE = capability_put(serv_capindex, "IE"); | |
109 | CAP_KLN = capability_put(serv_capindex, "KLN"); | |
110 | CAP_KNOCK = capability_put(serv_capindex, "KNOCK"); | |
111 | CAP_ZIP = capability_put(serv_capindex, "ZIP"); | |
112 | CAP_TB = capability_put(serv_capindex, "TB"); | |
113 | CAP_UNKLN = capability_put(serv_capindex, "UNKLN"); | |
114 | CAP_CLUSTER = capability_put(serv_capindex, "CLUSTER"); | |
115 | CAP_ENCAP = capability_put(serv_capindex, "ENCAP"); | |
116 | CAP_SERVICE = capability_put(serv_capindex, "SERVICES"); | |
117 | CAP_RSFNC = capability_put(serv_capindex, "RSFNC"); | |
118 | CAP_SAVE = capability_put(serv_capindex, "SAVE"); | |
119 | CAP_EUID = capability_put(serv_capindex, "EUID"); | |
120 | CAP_EOPMOD = capability_put(serv_capindex, "EOPMOD"); | |
121 | CAP_BAN = capability_put(serv_capindex, "BAN"); | |
122 | CAP_MLOCK = capability_put(serv_capindex, "MLOCK"); | |
123 | } | |
212380e3 | 124 | |
212380e3 | 125 | static CNCB serv_connect_callback; |
c6d72037 | 126 | static CNCB serv_connect_ssl_callback; |
212380e3 AC |
127 | |
128 | /* | |
129 | * hunt_server - Do the basic thing in delivering the message (command) | |
130 | * across the relays to the specific server (server) for | |
131 | * actions. | |
132 | * | |
133 | * Note: The command is a format string and *MUST* be | |
134 | * of prefixed style (e.g. ":%s COMMAND %s ..."). | |
135 | * Command can have only max 8 parameters. | |
136 | * | |
137 | * server parv[server] is the parameter identifying the | |
138 | * target server. | |
139 | * | |
140 | * *WARNING* | |
141 | * parv[server] is replaced with the pointer to the | |
142 | * real servername from the matched client (I'm lazy | |
143 | * now --msa). | |
144 | * | |
145 | * returns: (see #defines) | |
146 | */ | |
147 | int | |
148 | hunt_server(struct Client *client_p, struct Client *source_p, | |
149 | const char *command, int server, int parc, const char *parv[]) | |
150 | { | |
151 | struct Client *target_p; | |
152 | int wilds; | |
330fc5c1 | 153 | rb_dlink_node *ptr; |
212380e3 AC |
154 | const char *old; |
155 | char *new; | |
156 | ||
157 | /* | |
158 | * Assume it's me, if no server | |
159 | */ | |
160 | if(parc <= server || EmptyString(parv[server]) || | |
4d7a1ee5 | 161 | match(parv[server], me.name) || (strcmp(parv[server], me.id) == 0)) |
212380e3 | 162 | return (HUNTED_ISME); |
346fba92 | 163 | |
212380e3 AC |
164 | new = LOCAL_COPY(parv[server]); |
165 | ||
166 | /* | |
167 | * These are to pickup matches that would cause the following | |
168 | * message to go in the wrong direction while doing quick fast | |
169 | * non-matching lookups. | |
170 | */ | |
171 | if(MyClient(source_p)) | |
172 | target_p = find_named_client(new); | |
173 | else | |
174 | target_p = find_client(new); | |
175 | ||
176 | if(target_p) | |
177 | if(target_p->from == source_p->from && !MyConnect(target_p)) | |
178 | target_p = NULL; | |
179 | ||
212380e3 AC |
180 | collapse(new); |
181 | wilds = (strchr(new, '?') || strchr(new, '*')); | |
182 | ||
183 | /* | |
184 | * Again, if there are no wild cards involved in the server | |
185 | * name, use the hash lookup | |
186 | */ | |
cd300c1b | 187 | if(!target_p && wilds) |
212380e3 | 188 | { |
2fb07961 | 189 | RB_DLINK_FOREACH(ptr, global_serv_list.head) |
212380e3 | 190 | { |
cd300c1b | 191 | if(match(new, ((struct Client *) (ptr->data))->name)) |
212380e3 | 192 | { |
cd300c1b JT |
193 | target_p = ptr->data; |
194 | break; | |
212380e3 AC |
195 | } |
196 | } | |
197 | } | |
198 | ||
cd300c1b JT |
199 | if(target_p && !IsRegistered(target_p)) |
200 | target_p = NULL; | |
201 | ||
212380e3 AC |
202 | if(target_p) |
203 | { | |
212380e3 AC |
204 | if(IsMe(target_p) || MyClient(target_p)) |
205 | return HUNTED_ISME; | |
206 | ||
207 | old = parv[server]; | |
208 | parv[server] = get_id(target_p, target_p); | |
209 | ||
210 | sendto_one(target_p, command, get_id(source_p, target_p), | |
211 | parv[1], parv[2], parv[3], parv[4], parv[5], parv[6], parv[7], parv[8]); | |
212 | parv[server] = old; | |
213 | return (HUNTED_PASS); | |
214 | } | |
215 | ||
95d36ef5 | 216 | if(MyClient(source_p) || !IsDigit(parv[server][0])) |
212380e3 AC |
217 | sendto_one_numeric(source_p, ERR_NOSUCHSERVER, |
218 | form_str(ERR_NOSUCHSERVER), parv[server]); | |
219 | return (HUNTED_NOSUCH); | |
220 | } | |
221 | ||
222 | /* | |
223 | * try_connections - scan through configuration and try new connections. | |
224 | * Returns the calendar time when the next call to this | |
225 | * function should be made latest. (No harm done if this | |
226 | * is called earlier or later...) | |
227 | */ | |
228 | void | |
229 | try_connections(void *unused) | |
230 | { | |
231 | struct Client *client_p; | |
232 | struct server_conf *server_p = NULL; | |
233 | struct server_conf *tmp_p; | |
234 | struct Class *cltmp; | |
330fc5c1 | 235 | rb_dlink_node *ptr; |
212380e3 AC |
236 | int connecting = FALSE; |
237 | int confrq = 0; | |
238 | time_t next = 0; | |
239 | ||
5cefa1d6 | 240 | RB_DLINK_FOREACH(ptr, server_conf_list.head) |
212380e3 AC |
241 | { |
242 | tmp_p = ptr->data; | |
243 | ||
244 | if(ServerConfIllegal(tmp_p) || !ServerConfAutoconn(tmp_p)) | |
245 | continue; | |
246 | ||
f4a759c5 VY |
247 | /* don't allow ssl connections if ssl isn't setup */ |
248 | if(ServerConfSSL(tmp_p) && (!ssl_ok || !get_ssld_count())) | |
c6d72037 VY |
249 | continue; |
250 | ||
212380e3 AC |
251 | cltmp = tmp_p->class; |
252 | ||
253 | /* | |
254 | * Skip this entry if the use of it is still on hold until | |
255 | * future. Otherwise handle this entry (and set it on hold | |
256 | * until next time). Will reset only hold times, if already | |
257 | * made one successfull connection... [this algorithm is | |
258 | * a bit fuzzy... -- msa >;) ] | |
259 | */ | |
e3354945 | 260 | if(tmp_p->hold > rb_current_time()) |
212380e3 AC |
261 | { |
262 | if(next > tmp_p->hold || next == 0) | |
263 | next = tmp_p->hold; | |
264 | continue; | |
265 | } | |
266 | ||
267 | confrq = get_con_freq(cltmp); | |
e3354945 | 268 | tmp_p->hold = rb_current_time() + confrq; |
212380e3 AC |
269 | |
270 | /* | |
271 | * Found a CONNECT config with port specified, scan clients | |
272 | * and see if this server is already connected? | |
273 | */ | |
274 | client_p = find_server(NULL, tmp_p->name); | |
275 | ||
276 | if(!client_p && (CurrUsers(cltmp) < MaxUsers(cltmp)) && !connecting) | |
277 | { | |
278 | server_p = tmp_p; | |
279 | ||
280 | /* We connect only one at time... */ | |
281 | connecting = TRUE; | |
282 | } | |
283 | ||
284 | if((next > tmp_p->hold) || (next == 0)) | |
285 | next = tmp_p->hold; | |
286 | } | |
287 | ||
288 | /* TODO: change this to set active flag to 0 when added to event! --Habeeb */ | |
289 | if(GlobalSetOptions.autoconn == 0) | |
290 | return; | |
291 | ||
292 | if(!connecting) | |
293 | return; | |
294 | ||
295 | /* move this connect entry to end.. */ | |
330fc5c1 AC |
296 | rb_dlinkDelete(&server_p->node, &server_conf_list); |
297 | rb_dlinkAddTail(server_p, &server_p->node, &server_conf_list); | |
212380e3 AC |
298 | |
299 | /* | |
300 | * We used to only print this if serv_connect() actually | |
b2f0da88 | 301 | * suceeded, but since rb_tcp_connect() can call the callback |
212380e3 AC |
302 | * immediately if there is an error, we were getting error messages |
303 | * in the wrong order. SO, we just print out the activated line, | |
304 | * and let serv_connect() / serv_connect_callback() print an | |
305 | * error afterwards if it fails. | |
306 | * -- adrian | |
307 | */ | |
212380e3 AC |
308 | sendto_realops_snomask(SNO_GENERAL, L_ALL, |
309 | "Connection to %s activated", | |
310 | server_p->name); | |
212380e3 AC |
311 | |
312 | serv_connect(server_p, 0); | |
313 | } | |
314 | ||
315 | int | |
316 | check_server(const char *name, struct Client *client_p) | |
317 | { | |
318 | struct server_conf *server_p = NULL; | |
319 | struct server_conf *tmp_p; | |
330fc5c1 | 320 | rb_dlink_node *ptr; |
212380e3 AC |
321 | int error = -1; |
322 | ||
323 | s_assert(NULL != client_p); | |
324 | if(client_p == NULL) | |
325 | return error; | |
326 | ||
327 | if(!(client_p->localClient->passwd)) | |
328 | return -2; | |
329 | ||
330 | if(strlen(name) > HOSTLEN) | |
331 | return -4; | |
332 | ||
5cefa1d6 | 333 | RB_DLINK_FOREACH(ptr, server_conf_list.head) |
212380e3 AC |
334 | { |
335 | tmp_p = ptr->data; | |
336 | ||
337 | if(ServerConfIllegal(tmp_p)) | |
338 | continue; | |
339 | ||
340 | if(!match(tmp_p->name, name)) | |
341 | continue; | |
342 | ||
343 | error = -3; | |
344 | ||
345 | /* XXX: Fix me for IPv6 */ | |
346 | /* XXX sockhost is the IPv4 ip as a string */ | |
347 | if(match(tmp_p->host, client_p->host) || | |
348 | match(tmp_p->host, client_p->sockhost)) | |
349 | { | |
350 | error = -2; | |
351 | ||
ff0cc1e6 | 352 | if(tmp_p->passwd) |
212380e3 | 353 | { |
ff0cc1e6 | 354 | if(ServerConfEncrypted(tmp_p)) |
212380e3 | 355 | { |
ff0cc1e6 AC |
356 | if(!strcmp(tmp_p->passwd, rb_crypt(client_p->localClient->passwd, |
357 | tmp_p->passwd))) | |
358 | { | |
359 | server_p = tmp_p; | |
360 | break; | |
361 | } | |
362 | else | |
363 | continue; | |
212380e3 | 364 | } |
ff0cc1e6 AC |
365 | else if(strcmp(tmp_p->passwd, client_p->localClient->passwd)) |
366 | continue; | |
212380e3 | 367 | } |
ff0cc1e6 AC |
368 | |
369 | if(tmp_p->certfp) | |
212380e3 | 370 | { |
ff0cc1e6 AC |
371 | if(!client_p->certfp || strcasecmp(tmp_p->certfp, client_p->certfp) != 0) |
372 | continue; | |
212380e3 | 373 | } |
ff0cc1e6 AC |
374 | |
375 | server_p = tmp_p; | |
376 | break; | |
212380e3 AC |
377 | } |
378 | } | |
379 | ||
380 | if(server_p == NULL) | |
381 | return error; | |
382 | ||
f4a759c5 VY |
383 | if(ServerConfSSL(server_p) && client_p->localClient->ssl_ctl == NULL) |
384 | { | |
385 | return -5; | |
c6d72037 VY |
386 | } |
387 | ||
212380e3 AC |
388 | attach_server_conf(client_p, server_p); |
389 | ||
390 | /* clear ZIP/TB if they support but we dont want them */ | |
391 | #ifdef HAVE_LIBZ | |
392 | if(!ServerConfCompressed(server_p)) | |
393 | #endif | |
394 | ClearCap(client_p, CAP_ZIP); | |
395 | ||
396 | if(!ServerConfTb(server_p)) | |
397 | ClearCap(client_p, CAP_TB); | |
398 | ||
399 | return 0; | |
400 | } | |
401 | ||
402 | /* | |
403 | * send_capabilities | |
404 | * | |
405 | * inputs - Client pointer to send to | |
406 | * - int flag of capabilities that this server has | |
407 | * output - NONE | |
408 | * side effects - send the CAPAB line to a server -orabidoo | |
409 | * | |
410 | */ | |
411 | void | |
346fba92 | 412 | send_capabilities(struct Client *client_p, unsigned int cap_can_send) |
212380e3 | 413 | { |
346fba92 | 414 | sendto_one(client_p, "CAPAB :%s", capability_index_list(serv_capindex, cap_can_send)); |
212380e3 AC |
415 | } |
416 | ||
431a1a27 JT |
417 | static void |
418 | burst_ban(struct Client *client_p) | |
419 | { | |
420 | rb_dlink_node *ptr; | |
421 | struct ConfItem *aconf; | |
422 | const char *type, *oper; | |
423 | /* +5 for !,@,{,} and null */ | |
424 | char operbuf[NICKLEN + USERLEN + HOSTLEN + HOSTLEN + 5]; | |
425 | char *p; | |
426 | size_t melen; | |
427 | ||
428 | melen = strlen(me.name); | |
429 | RB_DLINK_FOREACH(ptr, prop_bans.head) | |
430 | { | |
431 | aconf = ptr->data; | |
432 | ||
433 | /* Skip expired stuff. */ | |
434 | if(aconf->lifetime < rb_current_time()) | |
435 | continue; | |
436 | switch(aconf->status & ~CONF_ILLEGAL) | |
437 | { | |
438 | case CONF_KILL: type = "K"; break; | |
439 | case CONF_DLINE: type = "D"; break; | |
440 | case CONF_XLINE: type = "X"; break; | |
441 | case CONF_RESV_NICK: type = "R"; break; | |
442 | case CONF_RESV_CHANNEL: type = "R"; break; | |
443 | default: | |
444 | continue; | |
445 | } | |
446 | oper = aconf->info.oper; | |
447 | if(aconf->flags & CONF_FLAGS_MYOPER) | |
448 | { | |
449 | /* Our operator{} names may not be meaningful | |
450 | * to other servers, so rewrite to our server | |
451 | * name. | |
452 | */ | |
453 | rb_strlcpy(operbuf, aconf->info.oper, sizeof buf); | |
454 | p = strrchr(operbuf, '{'); | |
ee6da53d JT |
455 | if (p != NULL && |
456 | operbuf + sizeof operbuf - p > (ptrdiff_t)(melen + 2)) | |
431a1a27 JT |
457 | { |
458 | memcpy(p + 1, me.name, melen); | |
459 | p[melen + 1] = '}'; | |
460 | p[melen + 2] = '\0'; | |
461 | oper = operbuf; | |
462 | } | |
463 | } | |
cedb7d05 | 464 | sendto_one(client_p, ":%s BAN %s %s %s %lu %d %d %s :%s%s%s", |
431a1a27 | 465 | me.id, |
431a1a27 JT |
466 | type, |
467 | aconf->user ? aconf->user : "*", aconf->host, | |
468 | (unsigned long)aconf->created, | |
469 | (int)(aconf->hold - aconf->created), | |
470 | (int)(aconf->lifetime - aconf->created), | |
471 | oper, | |
472 | aconf->passwd, | |
473 | aconf->spasswd ? "|" : "", | |
474 | aconf->spasswd ? aconf->spasswd : ""); | |
475 | } | |
476 | } | |
477 | ||
212380e3 AC |
478 | /* burst_modes_TS6() |
479 | * | |
480 | * input - client to burst to, channel name, list to burst, mode flag | |
481 | * output - | |
482 | * side effects - client is sent a list of +b, +e, or +I modes | |
483 | */ | |
484 | static void | |
485 | burst_modes_TS6(struct Client *client_p, struct Channel *chptr, | |
330fc5c1 | 486 | rb_dlink_list *list, char flag) |
212380e3 | 487 | { |
330fc5c1 | 488 | rb_dlink_node *ptr; |
212380e3 AC |
489 | struct Ban *banptr; |
490 | char *t; | |
491 | int tlen; | |
492 | int mlen; | |
493 | int cur_len; | |
494 | ||
b2f0da88 | 495 | cur_len = mlen = rb_sprintf(buf, ":%s BMASK %ld %s %c :", |
212380e3 AC |
496 | me.id, (long) chptr->channelts, chptr->chname, flag); |
497 | t = buf + mlen; | |
498 | ||
5cefa1d6 | 499 | RB_DLINK_FOREACH(ptr, list->head) |
212380e3 AC |
500 | { |
501 | banptr = ptr->data; | |
502 | ||
503 | tlen = strlen(banptr->banstr) + 1; | |
504 | ||
505 | /* uh oh */ | |
506 | if(cur_len + tlen > BUFSIZE - 3) | |
507 | { | |
508 | /* the one we're trying to send doesnt fit at all! */ | |
509 | if(cur_len == mlen) | |
510 | { | |
511 | s_assert(0); | |
512 | continue; | |
513 | } | |
514 | ||
515 | /* chop off trailing space and send.. */ | |
516 | *(t-1) = '\0'; | |
517 | sendto_one(client_p, "%s", buf); | |
518 | cur_len = mlen; | |
519 | t = buf + mlen; | |
520 | } | |
521 | ||
b2f0da88 | 522 | rb_sprintf(t, "%s ", banptr->banstr); |
212380e3 AC |
523 | t += tlen; |
524 | cur_len += tlen; | |
525 | } | |
526 | ||
527 | /* cant ever exit the loop above without having modified buf, | |
528 | * chop off trailing space and send. | |
529 | */ | |
530 | *(t-1) = '\0'; | |
531 | sendto_one(client_p, "%s", buf); | |
532 | } | |
533 | ||
212380e3 AC |
534 | /* |
535 | * burst_TS6 | |
536 | * | |
537 | * inputs - client (server) to send nick towards | |
538 | * - client to send nick for | |
539 | * output - NONE | |
540 | * side effects - NICK message is sent towards given client_p | |
541 | */ | |
542 | static void | |
543 | burst_TS6(struct Client *client_p) | |
544 | { | |
545 | static char ubuf[12]; | |
546 | struct Client *target_p; | |
547 | struct Channel *chptr; | |
548 | struct membership *msptr; | |
549 | hook_data_client hclientinfo; | |
550 | hook_data_channel hchaninfo; | |
330fc5c1 AC |
551 | rb_dlink_node *ptr; |
552 | rb_dlink_node *uptr; | |
212380e3 AC |
553 | char *t; |
554 | int tlen, mlen; | |
555 | int cur_len = 0; | |
556 | ||
557 | hclientinfo.client = hchaninfo.client = client_p; | |
558 | ||
5cefa1d6 | 559 | RB_DLINK_FOREACH(ptr, global_client_list.head) |
212380e3 AC |
560 | { |
561 | target_p = ptr->data; | |
562 | ||
563 | if(!IsPerson(target_p)) | |
564 | continue; | |
565 | ||
566 | send_umode(NULL, target_p, 0, 0, ubuf); | |
567 | if(!*ubuf) | |
568 | { | |
569 | ubuf[0] = '+'; | |
570 | ubuf[1] = '\0'; | |
571 | } | |
572 | ||
bea2295f | 573 | if(IsCapable(client_p, CAP_EUID)) |
212380e3 AC |
574 | sendto_one(client_p, ":%s EUID %s %d %ld %s %s %s %s %s %s %s :%s", |
575 | target_p->servptr->id, target_p->name, | |
576 | target_p->hopcount + 1, | |
577 | (long) target_p->tsinfo, ubuf, | |
578 | target_p->username, target_p->host, | |
579 | IsIPSpoof(target_p) ? "0" : target_p->sockhost, | |
580 | target_p->id, | |
581 | IsDynSpoof(target_p) ? target_p->orighost : "*", | |
582 | EmptyString(target_p->user->suser) ? "*" : target_p->user->suser, | |
583 | target_p->info); | |
bea2295f | 584 | else |
212380e3 AC |
585 | sendto_one(client_p, ":%s UID %s %d %ld %s %s %s %s %s :%s", |
586 | target_p->servptr->id, target_p->name, | |
587 | target_p->hopcount + 1, | |
588 | (long) target_p->tsinfo, ubuf, | |
589 | target_p->username, target_p->host, | |
590 | IsIPSpoof(target_p) ? "0" : target_p->sockhost, | |
591 | target_p->id, target_p->info); | |
bea2295f | 592 | |
8eda114a JT |
593 | if(!EmptyString(target_p->certfp)) |
594 | sendto_one(client_p, ":%s ENCAP * CERTFP :%s", | |
595 | use_id(target_p), target_p->certfp); | |
596 | ||
bea2295f | 597 | if(!IsCapable(client_p, CAP_EUID)) |
212380e3 AC |
598 | { |
599 | if(IsDynSpoof(target_p)) | |
600 | sendto_one(client_p, ":%s ENCAP * REALHOST %s", | |
601 | use_id(target_p), target_p->orighost); | |
602 | if(!EmptyString(target_p->user->suser)) | |
603 | sendto_one(client_p, ":%s ENCAP * LOGIN %s", | |
604 | use_id(target_p), target_p->user->suser); | |
605 | } | |
606 | ||
c127b45b | 607 | if(ConfigFileEntry.burst_away && !EmptyString(target_p->user->away)) |
212380e3 AC |
608 | sendto_one(client_p, ":%s AWAY :%s", |
609 | use_id(target_p), | |
c127b45b | 610 | target_p->user->away); |
212380e3 AC |
611 | |
612 | hclientinfo.target = target_p; | |
613 | call_hook(h_burst_client, &hclientinfo); | |
614 | } | |
615 | ||
5cefa1d6 | 616 | RB_DLINK_FOREACH(ptr, global_channel_list.head) |
212380e3 AC |
617 | { |
618 | chptr = ptr->data; | |
619 | ||
620 | if(*chptr->chname != '#') | |
621 | continue; | |
622 | ||
b2f0da88 | 623 | cur_len = mlen = rb_sprintf(buf, ":%s SJOIN %ld %s %s :", me.id, |
212380e3 AC |
624 | (long) chptr->channelts, chptr->chname, |
625 | channel_modes(chptr, client_p)); | |
626 | ||
627 | t = buf + mlen; | |
628 | ||
5cefa1d6 | 629 | RB_DLINK_FOREACH(uptr, chptr->members.head) |
212380e3 AC |
630 | { |
631 | msptr = uptr->data; | |
632 | ||
633 | tlen = strlen(use_id(msptr->client_p)) + 1; | |
634 | if(is_chanop(msptr)) | |
635 | tlen++; | |
636 | if(is_voiced(msptr)) | |
637 | tlen++; | |
638 | ||
639 | if(cur_len + tlen >= BUFSIZE - 3) | |
640 | { | |
641 | *(t-1) = '\0'; | |
642 | sendto_one(client_p, "%s", buf); | |
643 | cur_len = mlen; | |
644 | t = buf + mlen; | |
645 | } | |
646 | ||
b2f0da88 | 647 | rb_sprintf(t, "%s%s ", find_channel_status(msptr, 1), |
212380e3 AC |
648 | use_id(msptr->client_p)); |
649 | ||
650 | cur_len += tlen; | |
651 | t += tlen; | |
652 | } | |
653 | ||
330fc5c1 | 654 | if (rb_dlink_list_length(&chptr->members) > 0) |
212380e3 AC |
655 | { |
656 | /* remove trailing space */ | |
657 | *(t-1) = '\0'; | |
658 | } | |
659 | sendto_one(client_p, "%s", buf); | |
660 | ||
330fc5c1 | 661 | if(rb_dlink_list_length(&chptr->banlist) > 0) |
212380e3 AC |
662 | burst_modes_TS6(client_p, chptr, &chptr->banlist, 'b'); |
663 | ||
664 | if(IsCapable(client_p, CAP_EX) && | |
330fc5c1 | 665 | rb_dlink_list_length(&chptr->exceptlist) > 0) |
212380e3 AC |
666 | burst_modes_TS6(client_p, chptr, &chptr->exceptlist, 'e'); |
667 | ||
668 | if(IsCapable(client_p, CAP_IE) && | |
330fc5c1 | 669 | rb_dlink_list_length(&chptr->invexlist) > 0) |
212380e3 AC |
670 | burst_modes_TS6(client_p, chptr, &chptr->invexlist, 'I'); |
671 | ||
330fc5c1 | 672 | if(rb_dlink_list_length(&chptr->quietlist) > 0) |
212380e3 AC |
673 | burst_modes_TS6(client_p, chptr, &chptr->quietlist, 'q'); |
674 | ||
675 | if(IsCapable(client_p, CAP_TB) && chptr->topic != NULL) | |
676 | sendto_one(client_p, ":%s TB %s %ld %s%s:%s", | |
677 | me.id, chptr->chname, (long) chptr->topic_time, | |
678 | ConfigChannel.burst_topicwho ? chptr->topic_info : "", | |
679 | ConfigChannel.burst_topicwho ? " " : "", | |
680 | chptr->topic); | |
681 | ||
084ecbe0 | 682 | if(IsCapable(client_p, CAP_MLOCK)) |
6b8db2da | 683 | sendto_one(client_p, ":%s MLOCK %ld %s :%s", |
084ecbe0 | 684 | me.id, (long) chptr->channelts, chptr->chname, |
6b8db2da | 685 | EmptyString(chptr->mode_lock) ? "" : chptr->mode_lock); |
084ecbe0 | 686 | |
212380e3 AC |
687 | hchaninfo.chptr = chptr; |
688 | call_hook(h_burst_channel, &hchaninfo); | |
689 | } | |
690 | ||
691 | hclientinfo.target = NULL; | |
692 | call_hook(h_burst_finished, &hclientinfo); | |
693 | } | |
694 | ||
695 | /* | |
696 | * show_capabilities - show current server capabilities | |
697 | * | |
698 | * inputs - pointer to an struct Client | |
699 | * output - pointer to static string | |
700 | * side effects - build up string representing capabilities of server listed | |
701 | */ | |
702 | const char * | |
703 | show_capabilities(struct Client *target_p) | |
704 | { | |
705 | static char msgbuf[BUFSIZE]; | |
346fba92 AC |
706 | |
707 | *msgbuf = '\0'; | |
212380e3 | 708 | |
f4a759c5 VY |
709 | if(has_id(target_p)) |
710 | rb_strlcpy(msgbuf, " TS6", sizeof(msgbuf)); | |
f4a759c5 VY |
711 | |
712 | if(IsSSL(target_p)) | |
713 | rb_strlcat(msgbuf, " SSL", sizeof(msgbuf)); | |
212380e3 AC |
714 | |
715 | if(!IsServer(target_p) || !target_p->serv->caps) /* short circuit if no caps */ | |
f4a759c5 | 716 | return msgbuf + 1; |
212380e3 | 717 | |
346fba92 | 718 | rb_strlcat(msgbuf, capability_index_list(serv_capindex, target_p->serv->caps), sizeof(msgbuf)); |
212380e3 | 719 | |
f4a759c5 | 720 | return msgbuf + 1; |
212380e3 AC |
721 | } |
722 | ||
723 | /* | |
724 | * server_estab | |
725 | * | |
726 | * inputs - pointer to a struct Client | |
727 | * output - | |
728 | * side effects - | |
729 | */ | |
730 | int | |
731 | server_estab(struct Client *client_p) | |
732 | { | |
733 | struct Client *target_p; | |
734 | struct server_conf *server_p; | |
735 | hook_data_client hdata; | |
736 | char *host; | |
330fc5c1 | 737 | rb_dlink_node *ptr; |
6c528b8e | 738 | char note[HOSTLEN + 15]; |
212380e3 AC |
739 | |
740 | s_assert(NULL != client_p); | |
741 | if(client_p == NULL) | |
742 | return -1; | |
212380e3 AC |
743 | |
744 | host = client_p->name; | |
745 | ||
746 | if((server_p = client_p->localClient->att_sconf) == NULL) | |
747 | { | |
748 | /* This shouldn't happen, better tell the ops... -A1kmm */ | |
749 | sendto_realops_snomask(SNO_GENERAL, is_remote_connect(client_p) ? L_NETWIDE : L_ALL, | |
750 | "Warning: Lost connect{} block for server %s!", host); | |
751 | return exit_client(client_p, client_p, client_p, "Lost connect{} block!"); | |
752 | } | |
753 | ||
754 | /* We shouldn't have to check this, it should already done before | |
755 | * server_estab is called. -A1kmm | |
756 | */ | |
757 | if(client_p->localClient->passwd) | |
758 | { | |
759 | memset(client_p->localClient->passwd, 0, strlen(client_p->localClient->passwd)); | |
637c4932 | 760 | rb_free(client_p->localClient->passwd); |
212380e3 AC |
761 | client_p->localClient->passwd = NULL; |
762 | } | |
763 | ||
764 | /* Its got identd , since its a server */ | |
765 | SetGotId(client_p); | |
766 | ||
767 | /* If there is something in the serv_list, it might be this | |
768 | * connecting server.. | |
769 | */ | |
770 | if(!ServerInfo.hub && serv_list.head) | |
771 | { | |
772 | if(client_p != serv_list.head->data || serv_list.head->next) | |
773 | { | |
47adde3d | 774 | ServerStats.is_ref++; |
212380e3 AC |
775 | sendto_one(client_p, "ERROR :I'm a leaf not a hub"); |
776 | return exit_client(client_p, client_p, client_p, "I'm a leaf"); | |
777 | } | |
778 | } | |
779 | ||
780 | if(IsUnknown(client_p)) | |
781 | { | |
ff0cc1e6 AC |
782 | /* the server may be linking based on certificate fingerprint now. --nenolod */ |
783 | sendto_one(client_p, "PASS %s TS %d :%s", | |
784 | EmptyString(server_p->spasswd) ? "*" : server_p->spasswd, TS_CURRENT, me.id); | |
212380e3 AC |
785 | |
786 | /* pass info to new server */ | |
787 | send_capabilities(client_p, default_server_capabs | |
788 | | (ServerConfCompressed(server_p) ? CAP_ZIP_SUPPORTED : 0) | |
789 | | (ServerConfTb(server_p) ? CAP_TB : 0)); | |
790 | ||
791 | sendto_one(client_p, "SERVER %s 1 :%s%s", | |
792 | me.name, | |
793 | ConfigServerHide.hidden ? "(H) " : "", | |
794 | (me.info[0]) ? (me.info) : "IRCers United"); | |
795 | } | |
796 | ||
6c528b8e | 797 | if(!rb_set_buffers(client_p->localClient->F, READBUF_SIZE)) |
825ddf13 | 798 | ilog_error("rb_set_buffers failed for server"); |
212380e3 | 799 | |
c6d72037 | 800 | /* Enable compression now */ |
f4a759c5 VY |
801 | if(IsCapable(client_p, CAP_ZIP)) |
802 | { | |
803 | start_zlib_session(client_p); | |
804 | } | |
8982edb0 | 805 | sendto_one(client_p, "SVINFO %d %d 0 :%ld", TS_CURRENT, TS_MIN, (long int)rb_current_time()); |
212380e3 AC |
806 | |
807 | client_p->servptr = &me; | |
808 | ||
809 | if(IsAnyDead(client_p)) | |
810 | return CLIENT_EXITED; | |
811 | ||
812 | SetServer(client_p); | |
813 | ||
330fc5c1 | 814 | rb_dlinkAdd(client_p, &client_p->lnode, &me.serv->servers); |
330fc5c1 AC |
815 | rb_dlinkMoveNode(&client_p->localClient->tnode, &unknown_list, &serv_list); |
816 | rb_dlinkAddTailAlloc(client_p, &global_serv_list); | |
212380e3 AC |
817 | |
818 | if(has_id(client_p)) | |
819 | add_to_id_hash(client_p->id, client_p); | |
820 | ||
821 | add_to_client_hash(client_p->name, client_p); | |
822 | /* doesnt duplicate client_p->serv if allocated this struct already */ | |
823 | make_server(client_p); | |
212380e3 AC |
824 | |
825 | client_p->serv->caps = client_p->localClient->caps; | |
826 | ||
827 | if(client_p->localClient->fullcaps) | |
828 | { | |
47a03750 | 829 | client_p->serv->fullcaps = rb_strdup(client_p->localClient->fullcaps); |
637c4932 | 830 | rb_free(client_p->localClient->fullcaps); |
212380e3 AC |
831 | client_p->localClient->fullcaps = NULL; |
832 | } | |
833 | ||
994544c2 | 834 | client_p->serv->nameinfo = scache_connect(client_p->name, client_p->info, IsHidden(client_p)); |
e3354945 | 835 | client_p->localClient->firsttime = rb_current_time(); |
212380e3 AC |
836 | /* fixing eob timings.. -gnp */ |
837 | ||
330fc5c1 | 838 | if((rb_dlink_list_length(&lclient_list) + rb_dlink_list_length(&serv_list)) > |
2f15f871 | 839 | (unsigned long)MaxConnectionCount) |
330fc5c1 AC |
840 | MaxConnectionCount = rb_dlink_list_length(&lclient_list) + |
841 | rb_dlink_list_length(&serv_list); | |
2f15f871 | 842 | |
212380e3 AC |
843 | /* Show the real host/IP to admins */ |
844 | sendto_realops_snomask(SNO_GENERAL, L_ALL, | |
845 | "Link with %s established: (%s) link", | |
b3ebc7ab | 846 | client_p->name, |
212380e3 AC |
847 | show_capabilities(client_p)); |
848 | ||
849 | ilog(L_SERVER, "Link with %s established: (%s) link", | |
850 | log_client_name(client_p, SHOW_IP), show_capabilities(client_p)); | |
851 | ||
852 | hdata.client = &me; | |
853 | hdata.target = client_p; | |
854 | call_hook(h_server_introduced, &hdata); | |
855 | ||
f4a759c5 | 856 | rb_snprintf(note, sizeof(note), "Server: %s", client_p->name); |
c6d72037 | 857 | rb_note(client_p->localClient->F, note); |
212380e3 AC |
858 | |
859 | /* | |
860 | ** Old sendto_serv_but_one() call removed because we now | |
861 | ** need to send different names to different servers | |
862 | ** (domain name matching) Send new server to other servers. | |
863 | */ | |
5cefa1d6 | 864 | RB_DLINK_FOREACH(ptr, serv_list.head) |
212380e3 AC |
865 | { |
866 | target_p = ptr->data; | |
867 | ||
868 | if(target_p == client_p) | |
869 | continue; | |
870 | ||
871 | if(has_id(target_p) && has_id(client_p)) | |
872 | { | |
873 | sendto_one(target_p, ":%s SID %s 2 %s :%s%s", | |
874 | me.id, client_p->name, client_p->id, | |
875 | IsHidden(client_p) ? "(H) " : "", client_p->info); | |
876 | ||
877 | if(IsCapable(target_p, CAP_ENCAP) && | |
878 | !EmptyString(client_p->serv->fullcaps)) | |
879 | sendto_one(target_p, ":%s ENCAP * GCAP :%s", | |
880 | client_p->id, client_p->serv->fullcaps); | |
881 | } | |
882 | else | |
883 | { | |
884 | sendto_one(target_p, ":%s SERVER %s 2 :%s%s", | |
885 | me.name, client_p->name, | |
886 | IsHidden(client_p) ? "(H) " : "", client_p->info); | |
887 | ||
888 | if(IsCapable(target_p, CAP_ENCAP) && | |
889 | !EmptyString(client_p->serv->fullcaps)) | |
890 | sendto_one(target_p, ":%s ENCAP * GCAP :%s", | |
891 | client_p->name, client_p->serv->fullcaps); | |
892 | } | |
893 | } | |
894 | ||
895 | /* | |
896 | ** Pass on my client information to the new server | |
897 | ** | |
898 | ** First, pass only servers (idea is that if the link gets | |
899 | ** cancelled beacause the server was already there, | |
900 | ** there are no NICK's to be cancelled...). Of course, | |
901 | ** if cancellation occurs, all this info is sent anyway, | |
902 | ** and I guess the link dies when a read is attempted...? --msa | |
903 | ** | |
904 | ** Note: Link cancellation to occur at this point means | |
905 | ** that at least two servers from my fragment are building | |
906 | ** up connection this other fragment at the same time, it's | |
907 | ** a race condition, not the normal way of operation... | |
908 | ** | |
909 | ** ALSO NOTE: using the get_client_name for server names-- | |
910 | ** see previous *WARNING*!!! (Also, original inpath | |
911 | ** is destroyed...) | |
912 | */ | |
5cefa1d6 | 913 | RB_DLINK_FOREACH(ptr, global_serv_list.head) |
212380e3 AC |
914 | { |
915 | target_p = ptr->data; | |
916 | ||
917 | /* target_p->from == target_p for target_p == client_p */ | |
918 | if(IsMe(target_p) || target_p->from == client_p) | |
919 | continue; | |
920 | ||
921 | /* presumption, if target has an id, so does its uplink */ | |
922 | if(has_id(client_p) && has_id(target_p)) | |
923 | sendto_one(client_p, ":%s SID %s %d %s :%s%s", | |
66c8fdd2 | 924 | target_p->servptr->id, target_p->name, |
212380e3 AC |
925 | target_p->hopcount + 1, target_p->id, |
926 | IsHidden(target_p) ? "(H) " : "", target_p->info); | |
927 | else | |
928 | sendto_one(client_p, ":%s SERVER %s %d :%s%s", | |
66c8fdd2 | 929 | target_p->servptr->name, |
212380e3 AC |
930 | target_p->name, target_p->hopcount + 1, |
931 | IsHidden(target_p) ? "(H) " : "", target_p->info); | |
932 | ||
933 | if(IsCapable(client_p, CAP_ENCAP) && | |
934 | !EmptyString(target_p->serv->fullcaps)) | |
935 | sendto_one(client_p, ":%s ENCAP * GCAP :%s", | |
936 | get_id(target_p, client_p), | |
937 | target_p->serv->fullcaps); | |
938 | } | |
939 | ||
431a1a27 JT |
940 | if(IsCapable(client_p, CAP_BAN)) |
941 | burst_ban(client_p); | |
942 | ||
7bb8c655 | 943 | burst_TS6(client_p); |
212380e3 AC |
944 | |
945 | /* Always send a PING after connect burst is done */ | |
946 | sendto_one(client_p, "PING :%s", get_id(&me, client_p)); | |
947 | ||
948 | free_pre_client(client_p); | |
949 | ||
0bd120ed | 950 | send_pop_queue(client_p); |
212380e3 AC |
951 | |
952 | return 0; | |
212380e3 AC |
953 | } |
954 | ||
955 | /* | |
956 | * New server connection code | |
957 | * Based upon the stuff floating about in s_bsd.c | |
958 | * -- adrian | |
959 | */ | |
960 | ||
abe5dd20 JT |
961 | static int |
962 | serv_connect_resolved(struct Client *client_p) | |
963 | { | |
964 | struct rb_sockaddr_storage myipnum; | |
965 | char vhoststr[HOSTIPLEN]; | |
966 | struct server_conf *server_p; | |
967 | uint16_t port; | |
968 | ||
969 | if((server_p = client_p->localClient->att_sconf) == NULL) | |
970 | { | |
971 | sendto_realops_snomask(SNO_GENERAL, is_remote_connect(client_p) ? L_NETWIDE : L_ALL, "Lost connect{} block for %s", | |
b3ebc7ab | 972 | client_p->name); |
abe5dd20 JT |
973 | exit_client(client_p, client_p, &me, "Lost connect{} block"); |
974 | return 0; | |
975 | } | |
976 | ||
977 | #ifdef RB_IPV6 | |
978 | if(client_p->localClient->ip.ss_family == AF_INET6) | |
979 | port = ntohs(((struct sockaddr_in6 *)&client_p->localClient->ip)->sin6_port); | |
980 | else | |
981 | #endif | |
982 | port = ntohs(((struct sockaddr_in *)&client_p->localClient->ip)->sin_port); | |
983 | ||
984 | if(ServerConfVhosted(server_p)) | |
985 | { | |
986 | memcpy(&myipnum, &server_p->my_ipnum, sizeof(myipnum)); | |
987 | ((struct sockaddr_in *)&myipnum)->sin_port = 0; | |
988 | myipnum.ss_family = server_p->aftype; | |
989 | ||
990 | } | |
991 | else if(server_p->aftype == AF_INET && ServerInfo.specific_ipv4_vhost) | |
992 | { | |
993 | memcpy(&myipnum, &ServerInfo.ip, sizeof(myipnum)); | |
994 | ((struct sockaddr_in *)&myipnum)->sin_port = 0; | |
995 | myipnum.ss_family = AF_INET; | |
996 | SET_SS_LEN(&myipnum, sizeof(struct sockaddr_in)); | |
997 | } | |
998 | ||
999 | #ifdef RB_IPV6 | |
1000 | else if((server_p->aftype == AF_INET6) && ServerInfo.specific_ipv6_vhost) | |
1001 | { | |
1002 | memcpy(&myipnum, &ServerInfo.ip6, sizeof(myipnum)); | |
1003 | ((struct sockaddr_in6 *)&myipnum)->sin6_port = 0; | |
1004 | myipnum.ss_family = AF_INET6; | |
1005 | SET_SS_LEN(&myipnum, sizeof(struct sockaddr_in6)); | |
1006 | } | |
1007 | #endif | |
1008 | else | |
1009 | { | |
1010 | /* log */ | |
1011 | ilog(L_SERVER, "Connecting to %s[%s] port %d (%s)", client_p->name, client_p->sockhost, port, | |
1012 | #ifdef RB_IPV6 | |
1013 | server_p->aftype == AF_INET6 ? "IPv6" : | |
1014 | #endif | |
1015 | (server_p->aftype == AF_INET ? "IPv4" : "?")); | |
1016 | ||
f4a759c5 VY |
1017 | if(ServerConfSSL(server_p)) |
1018 | { | |
1019 | rb_connect_tcp(client_p->localClient->F, (struct sockaddr *)&client_p->localClient->ip, | |
1020 | NULL, 0, serv_connect_ssl_callback, | |
1021 | client_p, ConfigFileEntry.connect_timeout); | |
1022 | } | |
1023 | else | |
1024 | rb_connect_tcp(client_p->localClient->F, (struct sockaddr *)&client_p->localClient->ip, | |
1025 | NULL, 0, serv_connect_callback, | |
c6d72037 | 1026 | client_p, ConfigFileEntry.connect_timeout); |
abe5dd20 JT |
1027 | return 1; |
1028 | } | |
1029 | ||
1030 | /* log */ | |
caa4d9d2 | 1031 | rb_inet_ntop_sock((struct sockaddr *)&myipnum, vhoststr, sizeof vhoststr); |
abe5dd20 JT |
1032 | ilog(L_SERVER, "Connecting to %s[%s] port %d (%s) (vhost %s)", client_p->name, client_p->sockhost, port, |
1033 | #ifdef RB_IPV6 | |
1034 | server_p->aftype == AF_INET6 ? "IPv6" : | |
1035 | #endif | |
1036 | (server_p->aftype == AF_INET ? "IPv4" : "?"), vhoststr); | |
1037 | ||
1038 | ||
f4a759c5 VY |
1039 | if(ServerConfSSL(server_p)) |
1040 | rb_connect_tcp(client_p->localClient->F, (struct sockaddr *)&client_p->localClient->ip, | |
1041 | (struct sockaddr *) &myipnum, | |
1042 | GET_SS_LEN(&myipnum), serv_connect_ssl_callback, client_p, | |
1043 | ConfigFileEntry.connect_timeout); | |
1044 | else | |
1045 | rb_connect_tcp(client_p->localClient->F, (struct sockaddr *)&client_p->localClient->ip, | |
1046 | (struct sockaddr *) &myipnum, | |
1047 | GET_SS_LEN(&myipnum), serv_connect_callback, client_p, | |
c6d72037 | 1048 | ConfigFileEntry.connect_timeout); |
abe5dd20 JT |
1049 | |
1050 | return 1; | |
1051 | } | |
1052 | ||
1053 | static void | |
1054 | serv_connect_dns_callback(void *vptr, struct DNSReply *reply) | |
1055 | { | |
1056 | struct Client *client_p = vptr; | |
1057 | uint16_t port; | |
1058 | ||
1059 | rb_free(client_p->localClient->dnsquery); | |
1060 | client_p->localClient->dnsquery = NULL; | |
1061 | ||
1062 | if (reply == NULL) | |
1063 | { | |
1064 | sendto_realops_snomask(SNO_GENERAL, is_remote_connect(client_p) ? L_NETWIDE : L_ALL, "Cannot resolve hostname for %s", | |
b3ebc7ab | 1065 | client_p->name); |
abe5dd20 JT |
1066 | ilog(L_SERVER, "Cannot resolve hostname for %s", |
1067 | log_client_name(client_p, HIDE_IP)); | |
1068 | exit_client(client_p, client_p, &me, "Cannot resolve hostname"); | |
1069 | return; | |
1070 | } | |
1071 | #ifdef RB_IPV6 | |
1072 | if(reply->addr.ss_family == AF_INET6) | |
1073 | port = ((struct sockaddr_in6 *)&client_p->localClient->ip)->sin6_port; | |
1074 | else | |
1075 | #endif | |
1076 | port = ((struct sockaddr_in *)&client_p->localClient->ip)->sin_port; | |
1077 | memcpy(&client_p->localClient->ip, &reply->addr, sizeof(client_p->localClient->ip)); | |
1078 | #ifdef RB_IPV6 | |
1079 | if(reply->addr.ss_family == AF_INET6) | |
1080 | ((struct sockaddr_in6 *)&client_p->localClient->ip)->sin6_port = port; | |
1081 | else | |
1082 | #endif | |
1083 | ((struct sockaddr_in *)&client_p->localClient->ip)->sin_port = port; | |
1084 | /* Set sockhost properly now -- jilles */ | |
caa4d9d2 | 1085 | rb_inet_ntop_sock((struct sockaddr *)&client_p->localClient->ip, |
abe5dd20 JT |
1086 | client_p->sockhost, sizeof client_p->sockhost); |
1087 | serv_connect_resolved(client_p); | |
1088 | } | |
1089 | ||
212380e3 AC |
1090 | /* |
1091 | * serv_connect() - initiate a server connection | |
1092 | * | |
1093 | * inputs - pointer to conf | |
1094 | * - pointer to client doing the connet | |
1095 | * output - | |
1096 | * side effects - | |
1097 | * | |
1098 | * This code initiates a connection to a server. It first checks to make | |
1099 | * sure the given server exists. If this is the case, it creates a socket, | |
1100 | * creates a client, saves the socket information in the client, and | |
b2f0da88 | 1101 | * initiates a connection to the server through rb_connect_tcp(). The |
212380e3 AC |
1102 | * completion of this goes through serv_completed_connection(). |
1103 | * | |
1104 | * We return 1 if the connection is attempted, since we don't know whether | |
1105 | * it suceeded or not, and 0 if it fails in here somewhere. | |
1106 | */ | |
1107 | int | |
1108 | serv_connect(struct server_conf *server_p, struct Client *by) | |
1109 | { | |
1110 | struct Client *client_p; | |
abe5dd20 | 1111 | struct rb_sockaddr_storage theiripnum; |
6c528b8e | 1112 | rb_fde_t *F; |
6c528b8e | 1113 | char note[HOSTLEN + 10]; |
212380e3 AC |
1114 | |
1115 | s_assert(server_p != NULL); | |
1116 | if(server_p == NULL) | |
1117 | return 0; | |
1118 | ||
1119 | /* | |
1120 | * Make sure this server isn't already connected | |
1121 | */ | |
1122 | if((client_p = find_server(NULL, server_p->name))) | |
1123 | { | |
1124 | sendto_realops_snomask(SNO_GENERAL, L_ALL, | |
1125 | "Server %s already present from %s", | |
b3ebc7ab | 1126 | server_p->name, client_p->name); |
212380e3 AC |
1127 | if(by && IsPerson(by) && !MyClient(by)) |
1128 | sendto_one_notice(by, ":Server %s already present from %s", | |
b3ebc7ab | 1129 | server_p->name, client_p->name); |
212380e3 AC |
1130 | return 0; |
1131 | } | |
1132 | ||
1133 | /* create a socket for the server connection */ | |
75c58138 | 1134 | if((F = rb_socket(server_p->aftype, SOCK_STREAM, 0, NULL)) == NULL) |
212380e3 | 1135 | { |
825ddf13 | 1136 | ilog_error("opening a stream socket"); |
212380e3 AC |
1137 | return 0; |
1138 | } | |
1139 | ||
6c528b8e JT |
1140 | rb_snprintf(note, sizeof note, "Server: %s", server_p->name); |
1141 | rb_note(F, note); | |
212380e3 AC |
1142 | |
1143 | /* Create a local client */ | |
1144 | client_p = make_client(NULL); | |
1145 | ||
1146 | /* Copy in the server, hostname, fd | |
1147 | * The sockhost may be a hostname, this will be corrected later | |
1148 | * -- jilles | |
1149 | */ | |
f427c8b0 VY |
1150 | rb_strlcpy(client_p->name, server_p->name, sizeof(client_p->name)); |
1151 | rb_strlcpy(client_p->host, server_p->host, sizeof(client_p->host)); | |
1152 | rb_strlcpy(client_p->sockhost, server_p->host, sizeof(client_p->sockhost)); | |
6c528b8e | 1153 | client_p->localClient->F = F; |
c6d72037 | 1154 | add_to_cli_fd_hash(client_p); |
212380e3 AC |
1155 | |
1156 | /* | |
1157 | * Set up the initial server evilness, ripped straight from | |
1158 | * connect_server(), so don't blame me for it being evil. | |
1159 | * -- adrian | |
1160 | */ | |
1161 | ||
6c528b8e | 1162 | if(!rb_set_buffers(client_p->localClient->F, READBUF_SIZE)) |
212380e3 | 1163 | { |
825ddf13 | 1164 | ilog_error("setting the buffer size for a server connection"); |
212380e3 AC |
1165 | } |
1166 | ||
1167 | /* | |
1168 | * Attach config entries to client here rather than in | |
1169 | * serv_connect_callback(). This to avoid null pointer references. | |
1170 | */ | |
1171 | attach_server_conf(client_p, server_p); | |
1172 | ||
1173 | /* | |
1174 | * at this point we have a connection in progress and C/N lines | |
1175 | * attached to the client, the socket info should be saved in the | |
1176 | * client and it should either be resolved or have a valid address. | |
1177 | * | |
1178 | * The socket has been connected or connect is in progress. | |
1179 | */ | |
1180 | make_server(client_p); | |
1181 | if(by && IsPerson(by)) | |
1182 | { | |
1183 | strcpy(client_p->serv->by, by->name); | |
1184 | if(client_p->serv->user) | |
1185 | free_user(client_p->serv->user, NULL); | |
1186 | client_p->serv->user = by->user; | |
1187 | by->user->refcnt++; | |
1188 | } | |
1189 | else | |
1190 | { | |
1191 | strcpy(client_p->serv->by, "AutoConn."); | |
1192 | if(client_p->serv->user) | |
1193 | free_user(client_p->serv->user, NULL); | |
1194 | client_p->serv->user = NULL; | |
1195 | } | |
212380e3 | 1196 | SetConnecting(client_p); |
330fc5c1 | 1197 | rb_dlinkAddTail(client_p, &client_p->node, &global_client_list); |
212380e3 | 1198 | |
abe5dd20 | 1199 | if (rb_inet_pton_sock(server_p->host, (struct sockaddr *)&theiripnum) > 0) |
212380e3 | 1200 | { |
abe5dd20 | 1201 | memcpy(&client_p->localClient->ip, &theiripnum, sizeof(client_p->localClient->ip)); |
ccda6e3f | 1202 | #ifdef RB_IPV6 |
abe5dd20 JT |
1203 | if(theiripnum.ss_family == AF_INET6) |
1204 | ((struct sockaddr_in6 *)&client_p->localClient->ip)->sin6_port = htons(server_p->port); | |
1205 | else | |
212380e3 | 1206 | #endif |
abe5dd20 JT |
1207 | ((struct sockaddr_in *)&client_p->localClient->ip)->sin_port = htons(server_p->port); |
1208 | ||
1209 | return serv_connect_resolved(client_p); | |
1210 | } | |
212380e3 AC |
1211 | else |
1212 | { | |
ccda6e3f | 1213 | #ifdef RB_IPV6 |
abe5dd20 JT |
1214 | if(theiripnum.ss_family == AF_INET6) |
1215 | ((struct sockaddr_in6 *)&client_p->localClient->ip)->sin6_port = htons(server_p->port); | |
1216 | else | |
17648928 | 1217 | #endif |
abe5dd20 | 1218 | ((struct sockaddr_in *)&client_p->localClient->ip)->sin_port = htons(server_p->port); |
17648928 | 1219 | |
abe5dd20 JT |
1220 | client_p->localClient->dnsquery = rb_malloc(sizeof(struct DNSQuery)); |
1221 | client_p->localClient->dnsquery->ptr = client_p; | |
1222 | client_p->localClient->dnsquery->callback = serv_connect_dns_callback; | |
1223 | gethost_byname_type(server_p->host, client_p->localClient->dnsquery, | |
ccda6e3f | 1224 | #ifdef RB_IPV6 |
abe5dd20 | 1225 | server_p->aftype == AF_INET6 ? T_AAAA : |
17648928 | 1226 | #endif |
abe5dd20 JT |
1227 | T_A); |
1228 | return 1; | |
1229 | } | |
212380e3 AC |
1230 | } |
1231 | ||
f4a759c5 VY |
1232 | static void |
1233 | serv_connect_ssl_callback(rb_fde_t *F, int status, void *data) | |
1234 | { | |
1235 | struct Client *client_p = data; | |
1236 | rb_fde_t *xF[2]; | |
9ec51326 | 1237 | rb_connect_sockaddr(F, (struct sockaddr *)&client_p->localClient->ip, sizeof(client_p->localClient->ip)); |
f4a759c5 VY |
1238 | if(status != RB_OK) |
1239 | { | |
9ec51326 JT |
1240 | /* Print error message, just like non-SSL. */ |
1241 | serv_connect_callback(F, status, data); | |
f4a759c5 VY |
1242 | return; |
1243 | } | |
eda22d87 JT |
1244 | if(rb_socketpair(AF_UNIX, SOCK_STREAM, 0, &xF[0], &xF[1], "Outgoing ssld connection") == -1) |
1245 | { | |
1246 | ilog_error("rb_socketpair failed for server"); | |
1247 | serv_connect_callback(F, RB_ERROR, data); | |
1248 | return; | |
1249 | ||
1250 | } | |
f4a759c5 VY |
1251 | del_from_cli_fd_hash(client_p); |
1252 | client_p->localClient->F = xF[0]; | |
1253 | add_to_cli_fd_hash(client_p); | |
1254 | ||
1255 | client_p->localClient->ssl_ctl = start_ssld_connect(F, xF[1], rb_get_fd(xF[0])); | |
1256 | SetSSL(client_p); | |
39452169 | 1257 | serv_connect_callback(client_p->localClient->F, RB_OK, client_p); |
c6d72037 VY |
1258 | } |
1259 | ||
212380e3 AC |
1260 | /* |
1261 | * serv_connect_callback() - complete a server connection. | |
1262 | * | |
1263 | * This routine is called after the server connection attempt has | |
1264 | * completed. If unsucessful, an error is sent to ops and the client | |
1265 | * is closed. If sucessful, it goes through the initialisation/check | |
1266 | * procedures, the capabilities are sent, and the socket is then | |
1267 | * marked for reading. | |
1268 | */ | |
1269 | static void | |
6c528b8e | 1270 | serv_connect_callback(rb_fde_t *F, int status, void *data) |
212380e3 AC |
1271 | { |
1272 | struct Client *client_p = data; | |
1273 | struct server_conf *server_p; | |
1274 | char *errstr; | |
1275 | ||
1276 | /* First, make sure its a real client! */ | |
1277 | s_assert(client_p != NULL); | |
6c528b8e | 1278 | s_assert(client_p->localClient->F == F); |
212380e3 AC |
1279 | |
1280 | if(client_p == NULL) | |
1281 | return; | |
1282 | ||
1283 | /* while we were waiting for the callback, its possible this already | |
1284 | * linked in.. --fl | |
1285 | */ | |
1286 | if(find_server(NULL, client_p->name) != NULL) | |
1287 | { | |
1288 | exit_client(client_p, client_p, &me, "Server Exists"); | |
1289 | return; | |
1290 | } | |
1291 | ||
f4a759c5 | 1292 | if(client_p->localClient->ssl_ctl == NULL) |
c6d72037 VY |
1293 | rb_connect_sockaddr(F, (struct sockaddr *)&client_p->localClient->ip, sizeof(client_p->localClient->ip)); |
1294 | ||
212380e3 | 1295 | /* Check the status */ |
6c528b8e | 1296 | if(status != RB_OK) |
212380e3 AC |
1297 | { |
1298 | /* COMM_ERR_TIMEOUT wont have an errno associated with it, | |
1299 | * the others will.. --fl | |
1300 | */ | |
6c528b8e | 1301 | if(status == RB_ERR_TIMEOUT) |
212380e3 AC |
1302 | { |
1303 | sendto_realops_snomask(SNO_GENERAL, is_remote_connect(client_p) ? L_NETWIDE : L_ALL, | |
1304 | "Error connecting to %s[%s]: %s", | |
1305 | client_p->name, | |
212380e3 | 1306 | "255.255.255.255", |
b2f0da88 | 1307 | rb_errstr(status)); |
212380e3 AC |
1308 | ilog(L_SERVER, "Error connecting to %s[%s]: %s", |
1309 | client_p->name, client_p->sockhost, | |
b2f0da88 | 1310 | rb_errstr(status)); |
212380e3 AC |
1311 | } |
1312 | else | |
1313 | { | |
6c528b8e | 1314 | errstr = strerror(rb_get_sockerr(F)); |
212380e3 AC |
1315 | sendto_realops_snomask(SNO_GENERAL, is_remote_connect(client_p) ? L_NETWIDE : L_ALL, |
1316 | "Error connecting to %s[%s]: %s (%s)", | |
1317 | client_p->name, | |
212380e3 | 1318 | "255.255.255.255", |
b2f0da88 | 1319 | rb_errstr(status), errstr); |
212380e3 AC |
1320 | ilog(L_SERVER, "Error connecting to %s[%s]: %s (%s)", |
1321 | client_p->name, client_p->sockhost, | |
b2f0da88 | 1322 | rb_errstr(status), errstr); |
212380e3 AC |
1323 | } |
1324 | ||
b2f0da88 | 1325 | exit_client(client_p, client_p, &me, rb_errstr(status)); |
212380e3 AC |
1326 | return; |
1327 | } | |
1328 | ||
1329 | /* COMM_OK, so continue the connection procedure */ | |
1330 | /* Get the C/N lines */ | |
1331 | if((server_p = client_p->localClient->att_sconf) == NULL) | |
1332 | { | |
1333 | sendto_realops_snomask(SNO_GENERAL, is_remote_connect(client_p) ? L_NETWIDE : L_ALL, "Lost connect{} block for %s", | |
b3ebc7ab | 1334 | client_p->name); |
212380e3 AC |
1335 | exit_client(client_p, client_p, &me, "Lost connect{} block"); |
1336 | return; | |
1337 | } | |
1338 | ||
1339 | /* Next, send the initial handshake */ | |
1340 | SetHandshake(client_p); | |
1341 | ||
ff0cc1e6 AC |
1342 | /* the server may be linking based on certificate fingerprint now. --nenolod */ |
1343 | sendto_one(client_p, "PASS %s TS %d :%s", | |
1344 | EmptyString(server_p->spasswd) ? "*" : server_p->spasswd, TS_CURRENT, me.id); | |
212380e3 AC |
1345 | |
1346 | /* pass my info to the new server */ | |
1347 | send_capabilities(client_p, default_server_capabs | |
1348 | | (ServerConfCompressed(server_p) ? CAP_ZIP_SUPPORTED : 0) | |
1349 | | (ServerConfTb(server_p) ? CAP_TB : 0)); | |
1350 | ||
1351 | sendto_one(client_p, "SERVER %s 1 :%s%s", | |
1352 | me.name, | |
1353 | ConfigServerHide.hidden ? "(H) " : "", me.info); | |
1354 | ||
1355 | /* | |
1356 | * If we've been marked dead because a send failed, just exit | |
1357 | * here now and save everyone the trouble of us ever existing. | |
1358 | */ | |
1359 | if(IsAnyDead(client_p)) | |
1360 | { | |
1361 | sendto_realops_snomask(SNO_GENERAL, is_remote_connect(client_p) ? L_NETWIDE : L_ALL, | |
1362 | "%s went dead during handshake", client_p->name); | |
1363 | exit_client(client_p, client_p, &me, "Went dead during handshake"); | |
1364 | return; | |
1365 | } | |
1366 | ||
1367 | /* don't move to serv_list yet -- we haven't sent a burst! */ | |
1368 | ||
1369 | /* If we get here, we're ok, so lets start reading some data */ | |
6c528b8e | 1370 | read_packet(F, client_p); |
212380e3 | 1371 | } |