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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 | { | |
885cd603 | 103 | serv_capindex = capability_index_create("server capabilities"); |
346fba92 | 104 | |
22cae20f JT |
105 | /* These two are not set via CAPAB/GCAP keywords. */ |
106 | CAP_CAP = capability_put_anonymous(serv_capindex); | |
107 | CAP_TS6 = capability_put_anonymous(serv_capindex); | |
108 | ||
346fba92 AC |
109 | CAP_QS = capability_put(serv_capindex, "QS"); |
110 | CAP_EX = capability_put(serv_capindex, "EX"); | |
111 | CAP_CHW = capability_put(serv_capindex, "CHW"); | |
112 | CAP_IE = capability_put(serv_capindex, "IE"); | |
113 | CAP_KLN = capability_put(serv_capindex, "KLN"); | |
114 | CAP_KNOCK = capability_put(serv_capindex, "KNOCK"); | |
115 | CAP_ZIP = capability_put(serv_capindex, "ZIP"); | |
116 | CAP_TB = capability_put(serv_capindex, "TB"); | |
117 | CAP_UNKLN = capability_put(serv_capindex, "UNKLN"); | |
118 | CAP_CLUSTER = capability_put(serv_capindex, "CLUSTER"); | |
119 | CAP_ENCAP = capability_put(serv_capindex, "ENCAP"); | |
120 | CAP_SERVICE = capability_put(serv_capindex, "SERVICES"); | |
121 | CAP_RSFNC = capability_put(serv_capindex, "RSFNC"); | |
122 | CAP_SAVE = capability_put(serv_capindex, "SAVE"); | |
123 | CAP_EUID = capability_put(serv_capindex, "EUID"); | |
124 | CAP_EOPMOD = capability_put(serv_capindex, "EOPMOD"); | |
125 | CAP_BAN = capability_put(serv_capindex, "BAN"); | |
126 | CAP_MLOCK = capability_put(serv_capindex, "MLOCK"); | |
58b60c20 JT |
127 | |
128 | capability_require(serv_capindex, "QS"); | |
129 | capability_require(serv_capindex, "ENCAP"); | |
346fba92 | 130 | } |
212380e3 | 131 | |
212380e3 | 132 | static CNCB serv_connect_callback; |
c6d72037 | 133 | static CNCB serv_connect_ssl_callback; |
212380e3 AC |
134 | |
135 | /* | |
136 | * hunt_server - Do the basic thing in delivering the message (command) | |
137 | * across the relays to the specific server (server) for | |
138 | * actions. | |
139 | * | |
140 | * Note: The command is a format string and *MUST* be | |
141 | * of prefixed style (e.g. ":%s COMMAND %s ..."). | |
142 | * Command can have only max 8 parameters. | |
143 | * | |
144 | * server parv[server] is the parameter identifying the | |
145 | * target server. | |
146 | * | |
147 | * *WARNING* | |
148 | * parv[server] is replaced with the pointer to the | |
149 | * real servername from the matched client (I'm lazy | |
150 | * now --msa). | |
151 | * | |
152 | * returns: (see #defines) | |
153 | */ | |
154 | int | |
155 | hunt_server(struct Client *client_p, struct Client *source_p, | |
156 | const char *command, int server, int parc, const char *parv[]) | |
157 | { | |
158 | struct Client *target_p; | |
159 | int wilds; | |
330fc5c1 | 160 | rb_dlink_node *ptr; |
212380e3 AC |
161 | const char *old; |
162 | char *new; | |
163 | ||
164 | /* | |
165 | * Assume it's me, if no server | |
166 | */ | |
167 | if(parc <= server || EmptyString(parv[server]) || | |
4d7a1ee5 | 168 | match(parv[server], me.name) || (strcmp(parv[server], me.id) == 0)) |
212380e3 | 169 | return (HUNTED_ISME); |
346fba92 | 170 | |
212380e3 AC |
171 | new = LOCAL_COPY(parv[server]); |
172 | ||
173 | /* | |
174 | * These are to pickup matches that would cause the following | |
175 | * message to go in the wrong direction while doing quick fast | |
176 | * non-matching lookups. | |
177 | */ | |
178 | if(MyClient(source_p)) | |
179 | target_p = find_named_client(new); | |
180 | else | |
181 | target_p = find_client(new); | |
182 | ||
183 | if(target_p) | |
184 | if(target_p->from == source_p->from && !MyConnect(target_p)) | |
185 | target_p = NULL; | |
186 | ||
212380e3 AC |
187 | collapse(new); |
188 | wilds = (strchr(new, '?') || strchr(new, '*')); | |
189 | ||
190 | /* | |
191 | * Again, if there are no wild cards involved in the server | |
192 | * name, use the hash lookup | |
193 | */ | |
cd300c1b | 194 | if(!target_p && wilds) |
212380e3 | 195 | { |
2fb07961 | 196 | RB_DLINK_FOREACH(ptr, global_serv_list.head) |
212380e3 | 197 | { |
cd300c1b | 198 | if(match(new, ((struct Client *) (ptr->data))->name)) |
212380e3 | 199 | { |
cd300c1b JT |
200 | target_p = ptr->data; |
201 | break; | |
212380e3 AC |
202 | } |
203 | } | |
204 | } | |
205 | ||
cd300c1b JT |
206 | if(target_p && !IsRegistered(target_p)) |
207 | target_p = NULL; | |
208 | ||
212380e3 AC |
209 | if(target_p) |
210 | { | |
212380e3 AC |
211 | if(IsMe(target_p) || MyClient(target_p)) |
212 | return HUNTED_ISME; | |
213 | ||
214 | old = parv[server]; | |
215 | parv[server] = get_id(target_p, target_p); | |
216 | ||
217 | sendto_one(target_p, command, get_id(source_p, target_p), | |
218 | parv[1], parv[2], parv[3], parv[4], parv[5], parv[6], parv[7], parv[8]); | |
219 | parv[server] = old; | |
220 | return (HUNTED_PASS); | |
221 | } | |
222 | ||
95d36ef5 | 223 | if(MyClient(source_p) || !IsDigit(parv[server][0])) |
212380e3 AC |
224 | sendto_one_numeric(source_p, ERR_NOSUCHSERVER, |
225 | form_str(ERR_NOSUCHSERVER), parv[server]); | |
226 | return (HUNTED_NOSUCH); | |
227 | } | |
228 | ||
229 | /* | |
230 | * try_connections - scan through configuration and try new connections. | |
231 | * Returns the calendar time when the next call to this | |
232 | * function should be made latest. (No harm done if this | |
233 | * is called earlier or later...) | |
234 | */ | |
235 | void | |
236 | try_connections(void *unused) | |
237 | { | |
238 | struct Client *client_p; | |
239 | struct server_conf *server_p = NULL; | |
240 | struct server_conf *tmp_p; | |
241 | struct Class *cltmp; | |
330fc5c1 | 242 | rb_dlink_node *ptr; |
212380e3 AC |
243 | int connecting = FALSE; |
244 | int confrq = 0; | |
245 | time_t next = 0; | |
246 | ||
5cefa1d6 | 247 | RB_DLINK_FOREACH(ptr, server_conf_list.head) |
212380e3 AC |
248 | { |
249 | tmp_p = ptr->data; | |
250 | ||
251 | if(ServerConfIllegal(tmp_p) || !ServerConfAutoconn(tmp_p)) | |
252 | continue; | |
253 | ||
f4a759c5 VY |
254 | /* don't allow ssl connections if ssl isn't setup */ |
255 | if(ServerConfSSL(tmp_p) && (!ssl_ok || !get_ssld_count())) | |
c6d72037 VY |
256 | continue; |
257 | ||
212380e3 AC |
258 | cltmp = tmp_p->class; |
259 | ||
260 | /* | |
261 | * Skip this entry if the use of it is still on hold until | |
262 | * future. Otherwise handle this entry (and set it on hold | |
263 | * until next time). Will reset only hold times, if already | |
264 | * made one successfull connection... [this algorithm is | |
265 | * a bit fuzzy... -- msa >;) ] | |
266 | */ | |
e3354945 | 267 | if(tmp_p->hold > rb_current_time()) |
212380e3 AC |
268 | { |
269 | if(next > tmp_p->hold || next == 0) | |
270 | next = tmp_p->hold; | |
271 | continue; | |
272 | } | |
273 | ||
274 | confrq = get_con_freq(cltmp); | |
e3354945 | 275 | tmp_p->hold = rb_current_time() + confrq; |
212380e3 AC |
276 | |
277 | /* | |
278 | * Found a CONNECT config with port specified, scan clients | |
279 | * and see if this server is already connected? | |
280 | */ | |
281 | client_p = find_server(NULL, tmp_p->name); | |
282 | ||
283 | if(!client_p && (CurrUsers(cltmp) < MaxUsers(cltmp)) && !connecting) | |
284 | { | |
285 | server_p = tmp_p; | |
286 | ||
287 | /* We connect only one at time... */ | |
288 | connecting = TRUE; | |
289 | } | |
290 | ||
291 | if((next > tmp_p->hold) || (next == 0)) | |
292 | next = tmp_p->hold; | |
293 | } | |
294 | ||
295 | /* TODO: change this to set active flag to 0 when added to event! --Habeeb */ | |
296 | if(GlobalSetOptions.autoconn == 0) | |
297 | return; | |
298 | ||
299 | if(!connecting) | |
300 | return; | |
301 | ||
302 | /* move this connect entry to end.. */ | |
330fc5c1 AC |
303 | rb_dlinkDelete(&server_p->node, &server_conf_list); |
304 | rb_dlinkAddTail(server_p, &server_p->node, &server_conf_list); | |
212380e3 AC |
305 | |
306 | /* | |
307 | * We used to only print this if serv_connect() actually | |
b2f0da88 | 308 | * suceeded, but since rb_tcp_connect() can call the callback |
212380e3 AC |
309 | * immediately if there is an error, we were getting error messages |
310 | * in the wrong order. SO, we just print out the activated line, | |
311 | * and let serv_connect() / serv_connect_callback() print an | |
312 | * error afterwards if it fails. | |
313 | * -- adrian | |
314 | */ | |
212380e3 AC |
315 | sendto_realops_snomask(SNO_GENERAL, L_ALL, |
316 | "Connection to %s activated", | |
317 | server_p->name); | |
212380e3 AC |
318 | |
319 | serv_connect(server_p, 0); | |
320 | } | |
321 | ||
322 | int | |
323 | check_server(const char *name, struct Client *client_p) | |
324 | { | |
325 | struct server_conf *server_p = NULL; | |
326 | struct server_conf *tmp_p; | |
330fc5c1 | 327 | rb_dlink_node *ptr; |
212380e3 AC |
328 | int error = -1; |
329 | ||
330 | s_assert(NULL != client_p); | |
331 | if(client_p == NULL) | |
332 | return error; | |
333 | ||
334 | if(!(client_p->localClient->passwd)) | |
335 | return -2; | |
336 | ||
337 | if(strlen(name) > HOSTLEN) | |
338 | return -4; | |
339 | ||
5cefa1d6 | 340 | RB_DLINK_FOREACH(ptr, server_conf_list.head) |
212380e3 AC |
341 | { |
342 | tmp_p = ptr->data; | |
343 | ||
344 | if(ServerConfIllegal(tmp_p)) | |
345 | continue; | |
346 | ||
347 | if(!match(tmp_p->name, name)) | |
348 | continue; | |
349 | ||
350 | error = -3; | |
351 | ||
352 | /* XXX: Fix me for IPv6 */ | |
353 | /* XXX sockhost is the IPv4 ip as a string */ | |
354 | if(match(tmp_p->host, client_p->host) || | |
355 | match(tmp_p->host, client_p->sockhost)) | |
356 | { | |
357 | error = -2; | |
358 | ||
ff0cc1e6 | 359 | if(tmp_p->passwd) |
212380e3 | 360 | { |
ff0cc1e6 | 361 | if(ServerConfEncrypted(tmp_p)) |
212380e3 | 362 | { |
ff0cc1e6 AC |
363 | if(!strcmp(tmp_p->passwd, rb_crypt(client_p->localClient->passwd, |
364 | tmp_p->passwd))) | |
365 | { | |
366 | server_p = tmp_p; | |
367 | break; | |
368 | } | |
369 | else | |
370 | continue; | |
212380e3 | 371 | } |
ff0cc1e6 AC |
372 | else if(strcmp(tmp_p->passwd, client_p->localClient->passwd)) |
373 | continue; | |
212380e3 | 374 | } |
ff0cc1e6 AC |
375 | |
376 | if(tmp_p->certfp) | |
212380e3 | 377 | { |
ff0cc1e6 AC |
378 | if(!client_p->certfp || strcasecmp(tmp_p->certfp, client_p->certfp) != 0) |
379 | continue; | |
212380e3 | 380 | } |
ff0cc1e6 AC |
381 | |
382 | server_p = tmp_p; | |
383 | break; | |
212380e3 AC |
384 | } |
385 | } | |
386 | ||
387 | if(server_p == NULL) | |
388 | return error; | |
389 | ||
f4a759c5 VY |
390 | if(ServerConfSSL(server_p) && client_p->localClient->ssl_ctl == NULL) |
391 | { | |
392 | return -5; | |
c6d72037 VY |
393 | } |
394 | ||
212380e3 AC |
395 | attach_server_conf(client_p, server_p); |
396 | ||
397 | /* clear ZIP/TB if they support but we dont want them */ | |
398 | #ifdef HAVE_LIBZ | |
399 | if(!ServerConfCompressed(server_p)) | |
400 | #endif | |
401 | ClearCap(client_p, CAP_ZIP); | |
402 | ||
403 | if(!ServerConfTb(server_p)) | |
404 | ClearCap(client_p, CAP_TB); | |
405 | ||
406 | return 0; | |
407 | } | |
408 | ||
409 | /* | |
410 | * send_capabilities | |
411 | * | |
412 | * inputs - Client pointer to send to | |
413 | * - int flag of capabilities that this server has | |
414 | * output - NONE | |
415 | * side effects - send the CAPAB line to a server -orabidoo | |
416 | * | |
417 | */ | |
418 | void | |
346fba92 | 419 | send_capabilities(struct Client *client_p, unsigned int cap_can_send) |
212380e3 | 420 | { |
346fba92 | 421 | sendto_one(client_p, "CAPAB :%s", capability_index_list(serv_capindex, cap_can_send)); |
212380e3 AC |
422 | } |
423 | ||
431a1a27 JT |
424 | static void |
425 | burst_ban(struct Client *client_p) | |
426 | { | |
427 | rb_dlink_node *ptr; | |
428 | struct ConfItem *aconf; | |
429 | const char *type, *oper; | |
430 | /* +5 for !,@,{,} and null */ | |
431 | char operbuf[NICKLEN + USERLEN + HOSTLEN + HOSTLEN + 5]; | |
432 | char *p; | |
433 | size_t melen; | |
434 | ||
435 | melen = strlen(me.name); | |
436 | RB_DLINK_FOREACH(ptr, prop_bans.head) | |
437 | { | |
438 | aconf = ptr->data; | |
439 | ||
440 | /* Skip expired stuff. */ | |
441 | if(aconf->lifetime < rb_current_time()) | |
442 | continue; | |
443 | switch(aconf->status & ~CONF_ILLEGAL) | |
444 | { | |
445 | case CONF_KILL: type = "K"; break; | |
446 | case CONF_DLINE: type = "D"; break; | |
447 | case CONF_XLINE: type = "X"; break; | |
448 | case CONF_RESV_NICK: type = "R"; break; | |
449 | case CONF_RESV_CHANNEL: type = "R"; break; | |
450 | default: | |
451 | continue; | |
452 | } | |
453 | oper = aconf->info.oper; | |
454 | if(aconf->flags & CONF_FLAGS_MYOPER) | |
455 | { | |
456 | /* Our operator{} names may not be meaningful | |
457 | * to other servers, so rewrite to our server | |
458 | * name. | |
459 | */ | |
460 | rb_strlcpy(operbuf, aconf->info.oper, sizeof buf); | |
461 | p = strrchr(operbuf, '{'); | |
ee6da53d JT |
462 | if (p != NULL && |
463 | operbuf + sizeof operbuf - p > (ptrdiff_t)(melen + 2)) | |
431a1a27 JT |
464 | { |
465 | memcpy(p + 1, me.name, melen); | |
466 | p[melen + 1] = '}'; | |
467 | p[melen + 2] = '\0'; | |
468 | oper = operbuf; | |
469 | } | |
470 | } | |
cedb7d05 | 471 | sendto_one(client_p, ":%s BAN %s %s %s %lu %d %d %s :%s%s%s", |
431a1a27 | 472 | me.id, |
431a1a27 JT |
473 | type, |
474 | aconf->user ? aconf->user : "*", aconf->host, | |
475 | (unsigned long)aconf->created, | |
476 | (int)(aconf->hold - aconf->created), | |
477 | (int)(aconf->lifetime - aconf->created), | |
478 | oper, | |
479 | aconf->passwd, | |
480 | aconf->spasswd ? "|" : "", | |
481 | aconf->spasswd ? aconf->spasswd : ""); | |
482 | } | |
483 | } | |
484 | ||
212380e3 AC |
485 | /* burst_modes_TS6() |
486 | * | |
487 | * input - client to burst to, channel name, list to burst, mode flag | |
488 | * output - | |
489 | * side effects - client is sent a list of +b, +e, or +I modes | |
490 | */ | |
491 | static void | |
492 | burst_modes_TS6(struct Client *client_p, struct Channel *chptr, | |
330fc5c1 | 493 | rb_dlink_list *list, char flag) |
212380e3 | 494 | { |
330fc5c1 | 495 | rb_dlink_node *ptr; |
212380e3 AC |
496 | struct Ban *banptr; |
497 | char *t; | |
498 | int tlen; | |
499 | int mlen; | |
500 | int cur_len; | |
501 | ||
b2f0da88 | 502 | cur_len = mlen = rb_sprintf(buf, ":%s BMASK %ld %s %c :", |
212380e3 AC |
503 | me.id, (long) chptr->channelts, chptr->chname, flag); |
504 | t = buf + mlen; | |
505 | ||
5cefa1d6 | 506 | RB_DLINK_FOREACH(ptr, list->head) |
212380e3 AC |
507 | { |
508 | banptr = ptr->data; | |
509 | ||
7f0fc87d | 510 | tlen = strlen(banptr->banstr) + (banptr->forward ? strlen(banptr->forward) + 1 : 0) + 1; |
212380e3 AC |
511 | |
512 | /* uh oh */ | |
513 | if(cur_len + tlen > BUFSIZE - 3) | |
514 | { | |
515 | /* the one we're trying to send doesnt fit at all! */ | |
516 | if(cur_len == mlen) | |
517 | { | |
518 | s_assert(0); | |
519 | continue; | |
520 | } | |
521 | ||
522 | /* chop off trailing space and send.. */ | |
523 | *(t-1) = '\0'; | |
524 | sendto_one(client_p, "%s", buf); | |
525 | cur_len = mlen; | |
526 | t = buf + mlen; | |
527 | } | |
528 | ||
7f0fc87d JT |
529 | if (banptr->forward) |
530 | rb_sprintf(t, "%s$%s ", banptr->banstr, banptr->forward); | |
531 | else | |
532 | rb_sprintf(t, "%s ", banptr->banstr); | |
212380e3 AC |
533 | t += tlen; |
534 | cur_len += tlen; | |
535 | } | |
536 | ||
537 | /* cant ever exit the loop above without having modified buf, | |
538 | * chop off trailing space and send. | |
539 | */ | |
540 | *(t-1) = '\0'; | |
541 | sendto_one(client_p, "%s", buf); | |
542 | } | |
543 | ||
212380e3 AC |
544 | /* |
545 | * burst_TS6 | |
546 | * | |
547 | * inputs - client (server) to send nick towards | |
548 | * - client to send nick for | |
549 | * output - NONE | |
550 | * side effects - NICK message is sent towards given client_p | |
551 | */ | |
552 | static void | |
553 | burst_TS6(struct Client *client_p) | |
554 | { | |
555 | static char ubuf[12]; | |
556 | struct Client *target_p; | |
557 | struct Channel *chptr; | |
558 | struct membership *msptr; | |
559 | hook_data_client hclientinfo; | |
560 | hook_data_channel hchaninfo; | |
330fc5c1 AC |
561 | rb_dlink_node *ptr; |
562 | rb_dlink_node *uptr; | |
212380e3 AC |
563 | char *t; |
564 | int tlen, mlen; | |
565 | int cur_len = 0; | |
566 | ||
567 | hclientinfo.client = hchaninfo.client = client_p; | |
568 | ||
5cefa1d6 | 569 | RB_DLINK_FOREACH(ptr, global_client_list.head) |
212380e3 AC |
570 | { |
571 | target_p = ptr->data; | |
572 | ||
573 | if(!IsPerson(target_p)) | |
574 | continue; | |
575 | ||
576 | send_umode(NULL, target_p, 0, 0, ubuf); | |
577 | if(!*ubuf) | |
578 | { | |
579 | ubuf[0] = '+'; | |
580 | ubuf[1] = '\0'; | |
581 | } | |
582 | ||
bea2295f | 583 | if(IsCapable(client_p, CAP_EUID)) |
212380e3 AC |
584 | sendto_one(client_p, ":%s EUID %s %d %ld %s %s %s %s %s %s %s :%s", |
585 | target_p->servptr->id, target_p->name, | |
586 | target_p->hopcount + 1, | |
587 | (long) target_p->tsinfo, ubuf, | |
588 | target_p->username, target_p->host, | |
589 | IsIPSpoof(target_p) ? "0" : target_p->sockhost, | |
590 | target_p->id, | |
591 | IsDynSpoof(target_p) ? target_p->orighost : "*", | |
592 | EmptyString(target_p->user->suser) ? "*" : target_p->user->suser, | |
593 | target_p->info); | |
bea2295f | 594 | else |
212380e3 AC |
595 | sendto_one(client_p, ":%s UID %s %d %ld %s %s %s %s %s :%s", |
596 | target_p->servptr->id, target_p->name, | |
597 | target_p->hopcount + 1, | |
598 | (long) target_p->tsinfo, ubuf, | |
599 | target_p->username, target_p->host, | |
600 | IsIPSpoof(target_p) ? "0" : target_p->sockhost, | |
601 | target_p->id, target_p->info); | |
bea2295f | 602 | |
8eda114a JT |
603 | if(!EmptyString(target_p->certfp)) |
604 | sendto_one(client_p, ":%s ENCAP * CERTFP :%s", | |
605 | use_id(target_p), target_p->certfp); | |
606 | ||
bea2295f | 607 | if(!IsCapable(client_p, CAP_EUID)) |
212380e3 AC |
608 | { |
609 | if(IsDynSpoof(target_p)) | |
610 | sendto_one(client_p, ":%s ENCAP * REALHOST %s", | |
611 | use_id(target_p), target_p->orighost); | |
612 | if(!EmptyString(target_p->user->suser)) | |
613 | sendto_one(client_p, ":%s ENCAP * LOGIN %s", | |
614 | use_id(target_p), target_p->user->suser); | |
615 | } | |
616 | ||
c127b45b | 617 | if(ConfigFileEntry.burst_away && !EmptyString(target_p->user->away)) |
212380e3 AC |
618 | sendto_one(client_p, ":%s AWAY :%s", |
619 | use_id(target_p), | |
c127b45b | 620 | target_p->user->away); |
212380e3 AC |
621 | |
622 | hclientinfo.target = target_p; | |
623 | call_hook(h_burst_client, &hclientinfo); | |
624 | } | |
625 | ||
5cefa1d6 | 626 | RB_DLINK_FOREACH(ptr, global_channel_list.head) |
212380e3 AC |
627 | { |
628 | chptr = ptr->data; | |
629 | ||
630 | if(*chptr->chname != '#') | |
631 | continue; | |
632 | ||
b2f0da88 | 633 | cur_len = mlen = rb_sprintf(buf, ":%s SJOIN %ld %s %s :", me.id, |
212380e3 AC |
634 | (long) chptr->channelts, chptr->chname, |
635 | channel_modes(chptr, client_p)); | |
636 | ||
637 | t = buf + mlen; | |
638 | ||
5cefa1d6 | 639 | RB_DLINK_FOREACH(uptr, chptr->members.head) |
212380e3 AC |
640 | { |
641 | msptr = uptr->data; | |
642 | ||
643 | tlen = strlen(use_id(msptr->client_p)) + 1; | |
644 | if(is_chanop(msptr)) | |
645 | tlen++; | |
646 | if(is_voiced(msptr)) | |
647 | tlen++; | |
648 | ||
649 | if(cur_len + tlen >= BUFSIZE - 3) | |
650 | { | |
651 | *(t-1) = '\0'; | |
652 | sendto_one(client_p, "%s", buf); | |
653 | cur_len = mlen; | |
654 | t = buf + mlen; | |
655 | } | |
656 | ||
b2f0da88 | 657 | rb_sprintf(t, "%s%s ", find_channel_status(msptr, 1), |
212380e3 AC |
658 | use_id(msptr->client_p)); |
659 | ||
660 | cur_len += tlen; | |
661 | t += tlen; | |
662 | } | |
663 | ||
330fc5c1 | 664 | if (rb_dlink_list_length(&chptr->members) > 0) |
212380e3 AC |
665 | { |
666 | /* remove trailing space */ | |
667 | *(t-1) = '\0'; | |
668 | } | |
669 | sendto_one(client_p, "%s", buf); | |
670 | ||
330fc5c1 | 671 | if(rb_dlink_list_length(&chptr->banlist) > 0) |
212380e3 AC |
672 | burst_modes_TS6(client_p, chptr, &chptr->banlist, 'b'); |
673 | ||
674 | if(IsCapable(client_p, CAP_EX) && | |
330fc5c1 | 675 | rb_dlink_list_length(&chptr->exceptlist) > 0) |
212380e3 AC |
676 | burst_modes_TS6(client_p, chptr, &chptr->exceptlist, 'e'); |
677 | ||
678 | if(IsCapable(client_p, CAP_IE) && | |
330fc5c1 | 679 | rb_dlink_list_length(&chptr->invexlist) > 0) |
212380e3 AC |
680 | burst_modes_TS6(client_p, chptr, &chptr->invexlist, 'I'); |
681 | ||
330fc5c1 | 682 | if(rb_dlink_list_length(&chptr->quietlist) > 0) |
212380e3 AC |
683 | burst_modes_TS6(client_p, chptr, &chptr->quietlist, 'q'); |
684 | ||
685 | if(IsCapable(client_p, CAP_TB) && chptr->topic != NULL) | |
686 | sendto_one(client_p, ":%s TB %s %ld %s%s:%s", | |
687 | me.id, chptr->chname, (long) chptr->topic_time, | |
688 | ConfigChannel.burst_topicwho ? chptr->topic_info : "", | |
689 | ConfigChannel.burst_topicwho ? " " : "", | |
690 | chptr->topic); | |
691 | ||
084ecbe0 | 692 | if(IsCapable(client_p, CAP_MLOCK)) |
6b8db2da | 693 | sendto_one(client_p, ":%s MLOCK %ld %s :%s", |
084ecbe0 | 694 | me.id, (long) chptr->channelts, chptr->chname, |
6b8db2da | 695 | EmptyString(chptr->mode_lock) ? "" : chptr->mode_lock); |
084ecbe0 | 696 | |
212380e3 AC |
697 | hchaninfo.chptr = chptr; |
698 | call_hook(h_burst_channel, &hchaninfo); | |
699 | } | |
700 | ||
701 | hclientinfo.target = NULL; | |
702 | call_hook(h_burst_finished, &hclientinfo); | |
703 | } | |
704 | ||
705 | /* | |
706 | * show_capabilities - show current server capabilities | |
707 | * | |
708 | * inputs - pointer to an struct Client | |
709 | * output - pointer to static string | |
710 | * side effects - build up string representing capabilities of server listed | |
711 | */ | |
712 | const char * | |
713 | show_capabilities(struct Client *target_p) | |
714 | { | |
715 | static char msgbuf[BUFSIZE]; | |
346fba92 AC |
716 | |
717 | *msgbuf = '\0'; | |
212380e3 | 718 | |
f4a759c5 VY |
719 | if(has_id(target_p)) |
720 | rb_strlcpy(msgbuf, " TS6", sizeof(msgbuf)); | |
f4a759c5 VY |
721 | |
722 | if(IsSSL(target_p)) | |
723 | rb_strlcat(msgbuf, " SSL", sizeof(msgbuf)); | |
212380e3 AC |
724 | |
725 | if(!IsServer(target_p) || !target_p->serv->caps) /* short circuit if no caps */ | |
f4a759c5 | 726 | return msgbuf + 1; |
212380e3 | 727 | |
89fd463e | 728 | rb_strlcat(msgbuf, " ", sizeof(msgbuf)); |
346fba92 | 729 | rb_strlcat(msgbuf, capability_index_list(serv_capindex, target_p->serv->caps), sizeof(msgbuf)); |
212380e3 | 730 | |
f4a759c5 | 731 | return msgbuf + 1; |
212380e3 AC |
732 | } |
733 | ||
734 | /* | |
735 | * server_estab | |
736 | * | |
737 | * inputs - pointer to a struct Client | |
738 | * output - | |
739 | * side effects - | |
740 | */ | |
741 | int | |
742 | server_estab(struct Client *client_p) | |
743 | { | |
744 | struct Client *target_p; | |
745 | struct server_conf *server_p; | |
746 | hook_data_client hdata; | |
747 | char *host; | |
330fc5c1 | 748 | rb_dlink_node *ptr; |
6c528b8e | 749 | char note[HOSTLEN + 15]; |
212380e3 AC |
750 | |
751 | s_assert(NULL != client_p); | |
752 | if(client_p == NULL) | |
753 | return -1; | |
212380e3 AC |
754 | |
755 | host = client_p->name; | |
756 | ||
757 | if((server_p = client_p->localClient->att_sconf) == NULL) | |
758 | { | |
759 | /* This shouldn't happen, better tell the ops... -A1kmm */ | |
760 | sendto_realops_snomask(SNO_GENERAL, is_remote_connect(client_p) ? L_NETWIDE : L_ALL, | |
761 | "Warning: Lost connect{} block for server %s!", host); | |
762 | return exit_client(client_p, client_p, client_p, "Lost connect{} block!"); | |
763 | } | |
764 | ||
765 | /* We shouldn't have to check this, it should already done before | |
766 | * server_estab is called. -A1kmm | |
767 | */ | |
768 | if(client_p->localClient->passwd) | |
769 | { | |
770 | memset(client_p->localClient->passwd, 0, strlen(client_p->localClient->passwd)); | |
637c4932 | 771 | rb_free(client_p->localClient->passwd); |
212380e3 AC |
772 | client_p->localClient->passwd = NULL; |
773 | } | |
774 | ||
775 | /* Its got identd , since its a server */ | |
776 | SetGotId(client_p); | |
777 | ||
778 | /* If there is something in the serv_list, it might be this | |
779 | * connecting server.. | |
780 | */ | |
781 | if(!ServerInfo.hub && serv_list.head) | |
782 | { | |
783 | if(client_p != serv_list.head->data || serv_list.head->next) | |
784 | { | |
47adde3d | 785 | ServerStats.is_ref++; |
212380e3 AC |
786 | sendto_one(client_p, "ERROR :I'm a leaf not a hub"); |
787 | return exit_client(client_p, client_p, client_p, "I'm a leaf"); | |
788 | } | |
789 | } | |
790 | ||
791 | if(IsUnknown(client_p)) | |
792 | { | |
ff0cc1e6 AC |
793 | /* the server may be linking based on certificate fingerprint now. --nenolod */ |
794 | sendto_one(client_p, "PASS %s TS %d :%s", | |
795 | EmptyString(server_p->spasswd) ? "*" : server_p->spasswd, TS_CURRENT, me.id); | |
212380e3 AC |
796 | |
797 | /* pass info to new server */ | |
798 | send_capabilities(client_p, default_server_capabs | |
799 | | (ServerConfCompressed(server_p) ? CAP_ZIP_SUPPORTED : 0) | |
800 | | (ServerConfTb(server_p) ? CAP_TB : 0)); | |
801 | ||
802 | sendto_one(client_p, "SERVER %s 1 :%s%s", | |
803 | me.name, | |
804 | ConfigServerHide.hidden ? "(H) " : "", | |
805 | (me.info[0]) ? (me.info) : "IRCers United"); | |
806 | } | |
807 | ||
6c528b8e | 808 | if(!rb_set_buffers(client_p->localClient->F, READBUF_SIZE)) |
825ddf13 | 809 | ilog_error("rb_set_buffers failed for server"); |
212380e3 | 810 | |
c6d72037 | 811 | /* Enable compression now */ |
f4a759c5 VY |
812 | if(IsCapable(client_p, CAP_ZIP)) |
813 | { | |
814 | start_zlib_session(client_p); | |
815 | } | |
8982edb0 | 816 | sendto_one(client_p, "SVINFO %d %d 0 :%ld", TS_CURRENT, TS_MIN, (long int)rb_current_time()); |
212380e3 AC |
817 | |
818 | client_p->servptr = &me; | |
819 | ||
820 | if(IsAnyDead(client_p)) | |
821 | return CLIENT_EXITED; | |
822 | ||
823 | SetServer(client_p); | |
824 | ||
330fc5c1 | 825 | rb_dlinkAdd(client_p, &client_p->lnode, &me.serv->servers); |
330fc5c1 AC |
826 | rb_dlinkMoveNode(&client_p->localClient->tnode, &unknown_list, &serv_list); |
827 | rb_dlinkAddTailAlloc(client_p, &global_serv_list); | |
212380e3 AC |
828 | |
829 | if(has_id(client_p)) | |
830 | add_to_id_hash(client_p->id, client_p); | |
831 | ||
832 | add_to_client_hash(client_p->name, client_p); | |
833 | /* doesnt duplicate client_p->serv if allocated this struct already */ | |
834 | make_server(client_p); | |
212380e3 AC |
835 | |
836 | client_p->serv->caps = client_p->localClient->caps; | |
837 | ||
838 | if(client_p->localClient->fullcaps) | |
839 | { | |
47a03750 | 840 | client_p->serv->fullcaps = rb_strdup(client_p->localClient->fullcaps); |
637c4932 | 841 | rb_free(client_p->localClient->fullcaps); |
212380e3 AC |
842 | client_p->localClient->fullcaps = NULL; |
843 | } | |
844 | ||
994544c2 | 845 | client_p->serv->nameinfo = scache_connect(client_p->name, client_p->info, IsHidden(client_p)); |
e3354945 | 846 | client_p->localClient->firsttime = rb_current_time(); |
212380e3 AC |
847 | /* fixing eob timings.. -gnp */ |
848 | ||
330fc5c1 | 849 | if((rb_dlink_list_length(&lclient_list) + rb_dlink_list_length(&serv_list)) > |
2f15f871 | 850 | (unsigned long)MaxConnectionCount) |
330fc5c1 AC |
851 | MaxConnectionCount = rb_dlink_list_length(&lclient_list) + |
852 | rb_dlink_list_length(&serv_list); | |
2f15f871 | 853 | |
212380e3 AC |
854 | /* Show the real host/IP to admins */ |
855 | sendto_realops_snomask(SNO_GENERAL, L_ALL, | |
856 | "Link with %s established: (%s) link", | |
b3ebc7ab | 857 | client_p->name, |
212380e3 AC |
858 | show_capabilities(client_p)); |
859 | ||
860 | ilog(L_SERVER, "Link with %s established: (%s) link", | |
861 | log_client_name(client_p, SHOW_IP), show_capabilities(client_p)); | |
862 | ||
863 | hdata.client = &me; | |
864 | hdata.target = client_p; | |
865 | call_hook(h_server_introduced, &hdata); | |
866 | ||
f4a759c5 | 867 | rb_snprintf(note, sizeof(note), "Server: %s", client_p->name); |
c6d72037 | 868 | rb_note(client_p->localClient->F, note); |
212380e3 AC |
869 | |
870 | /* | |
871 | ** Old sendto_serv_but_one() call removed because we now | |
872 | ** need to send different names to different servers | |
873 | ** (domain name matching) Send new server to other servers. | |
874 | */ | |
5cefa1d6 | 875 | RB_DLINK_FOREACH(ptr, serv_list.head) |
212380e3 AC |
876 | { |
877 | target_p = ptr->data; | |
878 | ||
879 | if(target_p == client_p) | |
880 | continue; | |
881 | ||
882 | if(has_id(target_p) && has_id(client_p)) | |
883 | { | |
884 | sendto_one(target_p, ":%s SID %s 2 %s :%s%s", | |
885 | me.id, client_p->name, client_p->id, | |
886 | IsHidden(client_p) ? "(H) " : "", client_p->info); | |
887 | ||
ce4fa447 | 888 | if(!EmptyString(client_p->serv->fullcaps)) |
212380e3 AC |
889 | sendto_one(target_p, ":%s ENCAP * GCAP :%s", |
890 | client_p->id, client_p->serv->fullcaps); | |
891 | } | |
892 | else | |
893 | { | |
894 | sendto_one(target_p, ":%s SERVER %s 2 :%s%s", | |
895 | me.name, client_p->name, | |
896 | IsHidden(client_p) ? "(H) " : "", client_p->info); | |
897 | ||
ce4fa447 | 898 | if(!EmptyString(client_p->serv->fullcaps)) |
212380e3 AC |
899 | sendto_one(target_p, ":%s ENCAP * GCAP :%s", |
900 | client_p->name, client_p->serv->fullcaps); | |
901 | } | |
902 | } | |
903 | ||
904 | /* | |
905 | ** Pass on my client information to the new server | |
906 | ** | |
907 | ** First, pass only servers (idea is that if the link gets | |
908 | ** cancelled beacause the server was already there, | |
909 | ** there are no NICK's to be cancelled...). Of course, | |
910 | ** if cancellation occurs, all this info is sent anyway, | |
911 | ** and I guess the link dies when a read is attempted...? --msa | |
912 | ** | |
913 | ** Note: Link cancellation to occur at this point means | |
914 | ** that at least two servers from my fragment are building | |
915 | ** up connection this other fragment at the same time, it's | |
916 | ** a race condition, not the normal way of operation... | |
917 | ** | |
918 | ** ALSO NOTE: using the get_client_name for server names-- | |
919 | ** see previous *WARNING*!!! (Also, original inpath | |
920 | ** is destroyed...) | |
921 | */ | |
5cefa1d6 | 922 | RB_DLINK_FOREACH(ptr, global_serv_list.head) |
212380e3 AC |
923 | { |
924 | target_p = ptr->data; | |
925 | ||
926 | /* target_p->from == target_p for target_p == client_p */ | |
927 | if(IsMe(target_p) || target_p->from == client_p) | |
928 | continue; | |
929 | ||
930 | /* presumption, if target has an id, so does its uplink */ | |
931 | if(has_id(client_p) && has_id(target_p)) | |
932 | sendto_one(client_p, ":%s SID %s %d %s :%s%s", | |
66c8fdd2 | 933 | target_p->servptr->id, target_p->name, |
212380e3 AC |
934 | target_p->hopcount + 1, target_p->id, |
935 | IsHidden(target_p) ? "(H) " : "", target_p->info); | |
936 | else | |
937 | sendto_one(client_p, ":%s SERVER %s %d :%s%s", | |
66c8fdd2 | 938 | target_p->servptr->name, |
212380e3 AC |
939 | target_p->name, target_p->hopcount + 1, |
940 | IsHidden(target_p) ? "(H) " : "", target_p->info); | |
941 | ||
ce4fa447 | 942 | if(!EmptyString(target_p->serv->fullcaps)) |
212380e3 AC |
943 | sendto_one(client_p, ":%s ENCAP * GCAP :%s", |
944 | get_id(target_p, client_p), | |
945 | target_p->serv->fullcaps); | |
946 | } | |
947 | ||
431a1a27 JT |
948 | if(IsCapable(client_p, CAP_BAN)) |
949 | burst_ban(client_p); | |
950 | ||
7bb8c655 | 951 | burst_TS6(client_p); |
212380e3 AC |
952 | |
953 | /* Always send a PING after connect burst is done */ | |
954 | sendto_one(client_p, "PING :%s", get_id(&me, client_p)); | |
955 | ||
956 | free_pre_client(client_p); | |
957 | ||
0bd120ed | 958 | send_pop_queue(client_p); |
212380e3 AC |
959 | |
960 | return 0; | |
212380e3 AC |
961 | } |
962 | ||
963 | /* | |
964 | * New server connection code | |
965 | * Based upon the stuff floating about in s_bsd.c | |
966 | * -- adrian | |
967 | */ | |
968 | ||
abe5dd20 JT |
969 | static int |
970 | serv_connect_resolved(struct Client *client_p) | |
971 | { | |
972 | struct rb_sockaddr_storage myipnum; | |
973 | char vhoststr[HOSTIPLEN]; | |
974 | struct server_conf *server_p; | |
975 | uint16_t port; | |
976 | ||
977 | if((server_p = client_p->localClient->att_sconf) == NULL) | |
978 | { | |
979 | sendto_realops_snomask(SNO_GENERAL, is_remote_connect(client_p) ? L_NETWIDE : L_ALL, "Lost connect{} block for %s", | |
b3ebc7ab | 980 | client_p->name); |
abe5dd20 JT |
981 | exit_client(client_p, client_p, &me, "Lost connect{} block"); |
982 | return 0; | |
983 | } | |
984 | ||
985 | #ifdef RB_IPV6 | |
986 | if(client_p->localClient->ip.ss_family == AF_INET6) | |
987 | port = ntohs(((struct sockaddr_in6 *)&client_p->localClient->ip)->sin6_port); | |
988 | else | |
989 | #endif | |
990 | port = ntohs(((struct sockaddr_in *)&client_p->localClient->ip)->sin_port); | |
991 | ||
992 | if(ServerConfVhosted(server_p)) | |
993 | { | |
994 | memcpy(&myipnum, &server_p->my_ipnum, sizeof(myipnum)); | |
995 | ((struct sockaddr_in *)&myipnum)->sin_port = 0; | |
996 | myipnum.ss_family = server_p->aftype; | |
997 | ||
998 | } | |
999 | else if(server_p->aftype == AF_INET && ServerInfo.specific_ipv4_vhost) | |
1000 | { | |
1001 | memcpy(&myipnum, &ServerInfo.ip, sizeof(myipnum)); | |
1002 | ((struct sockaddr_in *)&myipnum)->sin_port = 0; | |
1003 | myipnum.ss_family = AF_INET; | |
1004 | SET_SS_LEN(&myipnum, sizeof(struct sockaddr_in)); | |
1005 | } | |
1006 | ||
1007 | #ifdef RB_IPV6 | |
1008 | else if((server_p->aftype == AF_INET6) && ServerInfo.specific_ipv6_vhost) | |
1009 | { | |
1010 | memcpy(&myipnum, &ServerInfo.ip6, sizeof(myipnum)); | |
1011 | ((struct sockaddr_in6 *)&myipnum)->sin6_port = 0; | |
1012 | myipnum.ss_family = AF_INET6; | |
1013 | SET_SS_LEN(&myipnum, sizeof(struct sockaddr_in6)); | |
1014 | } | |
1015 | #endif | |
1016 | else | |
1017 | { | |
1018 | /* log */ | |
1019 | ilog(L_SERVER, "Connecting to %s[%s] port %d (%s)", client_p->name, client_p->sockhost, port, | |
1020 | #ifdef RB_IPV6 | |
1021 | server_p->aftype == AF_INET6 ? "IPv6" : | |
1022 | #endif | |
1023 | (server_p->aftype == AF_INET ? "IPv4" : "?")); | |
1024 | ||
f4a759c5 VY |
1025 | if(ServerConfSSL(server_p)) |
1026 | { | |
1027 | rb_connect_tcp(client_p->localClient->F, (struct sockaddr *)&client_p->localClient->ip, | |
1028 | NULL, 0, serv_connect_ssl_callback, | |
1029 | client_p, ConfigFileEntry.connect_timeout); | |
1030 | } | |
1031 | else | |
1032 | rb_connect_tcp(client_p->localClient->F, (struct sockaddr *)&client_p->localClient->ip, | |
1033 | NULL, 0, serv_connect_callback, | |
c6d72037 | 1034 | client_p, ConfigFileEntry.connect_timeout); |
abe5dd20 JT |
1035 | return 1; |
1036 | } | |
1037 | ||
1038 | /* log */ | |
caa4d9d2 | 1039 | rb_inet_ntop_sock((struct sockaddr *)&myipnum, vhoststr, sizeof vhoststr); |
abe5dd20 JT |
1040 | ilog(L_SERVER, "Connecting to %s[%s] port %d (%s) (vhost %s)", client_p->name, client_p->sockhost, port, |
1041 | #ifdef RB_IPV6 | |
1042 | server_p->aftype == AF_INET6 ? "IPv6" : | |
1043 | #endif | |
1044 | (server_p->aftype == AF_INET ? "IPv4" : "?"), vhoststr); | |
1045 | ||
1046 | ||
f4a759c5 VY |
1047 | if(ServerConfSSL(server_p)) |
1048 | rb_connect_tcp(client_p->localClient->F, (struct sockaddr *)&client_p->localClient->ip, | |
1049 | (struct sockaddr *) &myipnum, | |
1050 | GET_SS_LEN(&myipnum), serv_connect_ssl_callback, client_p, | |
1051 | ConfigFileEntry.connect_timeout); | |
1052 | else | |
1053 | rb_connect_tcp(client_p->localClient->F, (struct sockaddr *)&client_p->localClient->ip, | |
1054 | (struct sockaddr *) &myipnum, | |
1055 | GET_SS_LEN(&myipnum), serv_connect_callback, client_p, | |
c6d72037 | 1056 | ConfigFileEntry.connect_timeout); |
abe5dd20 JT |
1057 | |
1058 | return 1; | |
1059 | } | |
1060 | ||
1061 | static void | |
1062 | serv_connect_dns_callback(void *vptr, struct DNSReply *reply) | |
1063 | { | |
1064 | struct Client *client_p = vptr; | |
1065 | uint16_t port; | |
1066 | ||
1067 | rb_free(client_p->localClient->dnsquery); | |
1068 | client_p->localClient->dnsquery = NULL; | |
1069 | ||
1070 | if (reply == NULL) | |
1071 | { | |
1072 | sendto_realops_snomask(SNO_GENERAL, is_remote_connect(client_p) ? L_NETWIDE : L_ALL, "Cannot resolve hostname for %s", | |
b3ebc7ab | 1073 | client_p->name); |
abe5dd20 JT |
1074 | ilog(L_SERVER, "Cannot resolve hostname for %s", |
1075 | log_client_name(client_p, HIDE_IP)); | |
1076 | exit_client(client_p, client_p, &me, "Cannot resolve hostname"); | |
1077 | return; | |
1078 | } | |
1079 | #ifdef RB_IPV6 | |
1080 | if(reply->addr.ss_family == AF_INET6) | |
1081 | port = ((struct sockaddr_in6 *)&client_p->localClient->ip)->sin6_port; | |
1082 | else | |
1083 | #endif | |
1084 | port = ((struct sockaddr_in *)&client_p->localClient->ip)->sin_port; | |
1085 | memcpy(&client_p->localClient->ip, &reply->addr, sizeof(client_p->localClient->ip)); | |
1086 | #ifdef RB_IPV6 | |
1087 | if(reply->addr.ss_family == AF_INET6) | |
1088 | ((struct sockaddr_in6 *)&client_p->localClient->ip)->sin6_port = port; | |
1089 | else | |
1090 | #endif | |
1091 | ((struct sockaddr_in *)&client_p->localClient->ip)->sin_port = port; | |
1092 | /* Set sockhost properly now -- jilles */ | |
caa4d9d2 | 1093 | rb_inet_ntop_sock((struct sockaddr *)&client_p->localClient->ip, |
abe5dd20 JT |
1094 | client_p->sockhost, sizeof client_p->sockhost); |
1095 | serv_connect_resolved(client_p); | |
1096 | } | |
1097 | ||
212380e3 AC |
1098 | /* |
1099 | * serv_connect() - initiate a server connection | |
1100 | * | |
1101 | * inputs - pointer to conf | |
1102 | * - pointer to client doing the connet | |
1103 | * output - | |
1104 | * side effects - | |
1105 | * | |
1106 | * This code initiates a connection to a server. It first checks to make | |
1107 | * sure the given server exists. If this is the case, it creates a socket, | |
1108 | * creates a client, saves the socket information in the client, and | |
b2f0da88 | 1109 | * initiates a connection to the server through rb_connect_tcp(). The |
212380e3 AC |
1110 | * completion of this goes through serv_completed_connection(). |
1111 | * | |
1112 | * We return 1 if the connection is attempted, since we don't know whether | |
1113 | * it suceeded or not, and 0 if it fails in here somewhere. | |
1114 | */ | |
1115 | int | |
1116 | serv_connect(struct server_conf *server_p, struct Client *by) | |
1117 | { | |
1118 | struct Client *client_p; | |
abe5dd20 | 1119 | struct rb_sockaddr_storage theiripnum; |
6c528b8e | 1120 | rb_fde_t *F; |
6c528b8e | 1121 | char note[HOSTLEN + 10]; |
212380e3 AC |
1122 | |
1123 | s_assert(server_p != NULL); | |
1124 | if(server_p == NULL) | |
1125 | return 0; | |
1126 | ||
1127 | /* | |
1128 | * Make sure this server isn't already connected | |
1129 | */ | |
1130 | if((client_p = find_server(NULL, server_p->name))) | |
1131 | { | |
1132 | sendto_realops_snomask(SNO_GENERAL, L_ALL, | |
1133 | "Server %s already present from %s", | |
b3ebc7ab | 1134 | server_p->name, client_p->name); |
212380e3 AC |
1135 | if(by && IsPerson(by) && !MyClient(by)) |
1136 | sendto_one_notice(by, ":Server %s already present from %s", | |
b3ebc7ab | 1137 | server_p->name, client_p->name); |
212380e3 AC |
1138 | return 0; |
1139 | } | |
1140 | ||
1141 | /* create a socket for the server connection */ | |
75c58138 | 1142 | if((F = rb_socket(server_p->aftype, SOCK_STREAM, 0, NULL)) == NULL) |
212380e3 | 1143 | { |
825ddf13 | 1144 | ilog_error("opening a stream socket"); |
212380e3 AC |
1145 | return 0; |
1146 | } | |
1147 | ||
6c528b8e JT |
1148 | rb_snprintf(note, sizeof note, "Server: %s", server_p->name); |
1149 | rb_note(F, note); | |
212380e3 AC |
1150 | |
1151 | /* Create a local client */ | |
1152 | client_p = make_client(NULL); | |
1153 | ||
1154 | /* Copy in the server, hostname, fd | |
1155 | * The sockhost may be a hostname, this will be corrected later | |
1156 | * -- jilles | |
1157 | */ | |
f427c8b0 VY |
1158 | rb_strlcpy(client_p->name, server_p->name, sizeof(client_p->name)); |
1159 | rb_strlcpy(client_p->host, server_p->host, sizeof(client_p->host)); | |
1160 | rb_strlcpy(client_p->sockhost, server_p->host, sizeof(client_p->sockhost)); | |
6c528b8e | 1161 | client_p->localClient->F = F; |
c6d72037 | 1162 | add_to_cli_fd_hash(client_p); |
212380e3 AC |
1163 | |
1164 | /* | |
1165 | * Set up the initial server evilness, ripped straight from | |
1166 | * connect_server(), so don't blame me for it being evil. | |
1167 | * -- adrian | |
1168 | */ | |
1169 | ||
6c528b8e | 1170 | if(!rb_set_buffers(client_p->localClient->F, READBUF_SIZE)) |
212380e3 | 1171 | { |
825ddf13 | 1172 | ilog_error("setting the buffer size for a server connection"); |
212380e3 AC |
1173 | } |
1174 | ||
1175 | /* | |
1176 | * Attach config entries to client here rather than in | |
1177 | * serv_connect_callback(). This to avoid null pointer references. | |
1178 | */ | |
1179 | attach_server_conf(client_p, server_p); | |
1180 | ||
1181 | /* | |
1182 | * at this point we have a connection in progress and C/N lines | |
1183 | * attached to the client, the socket info should be saved in the | |
1184 | * client and it should either be resolved or have a valid address. | |
1185 | * | |
1186 | * The socket has been connected or connect is in progress. | |
1187 | */ | |
1188 | make_server(client_p); | |
1189 | if(by && IsPerson(by)) | |
1190 | { | |
1191 | strcpy(client_p->serv->by, by->name); | |
1192 | if(client_p->serv->user) | |
1193 | free_user(client_p->serv->user, NULL); | |
1194 | client_p->serv->user = by->user; | |
1195 | by->user->refcnt++; | |
1196 | } | |
1197 | else | |
1198 | { | |
1199 | strcpy(client_p->serv->by, "AutoConn."); | |
1200 | if(client_p->serv->user) | |
1201 | free_user(client_p->serv->user, NULL); | |
1202 | client_p->serv->user = NULL; | |
1203 | } | |
212380e3 | 1204 | SetConnecting(client_p); |
330fc5c1 | 1205 | rb_dlinkAddTail(client_p, &client_p->node, &global_client_list); |
212380e3 | 1206 | |
abe5dd20 | 1207 | if (rb_inet_pton_sock(server_p->host, (struct sockaddr *)&theiripnum) > 0) |
212380e3 | 1208 | { |
abe5dd20 | 1209 | memcpy(&client_p->localClient->ip, &theiripnum, sizeof(client_p->localClient->ip)); |
ccda6e3f | 1210 | #ifdef RB_IPV6 |
abe5dd20 JT |
1211 | if(theiripnum.ss_family == AF_INET6) |
1212 | ((struct sockaddr_in6 *)&client_p->localClient->ip)->sin6_port = htons(server_p->port); | |
1213 | else | |
212380e3 | 1214 | #endif |
abe5dd20 JT |
1215 | ((struct sockaddr_in *)&client_p->localClient->ip)->sin_port = htons(server_p->port); |
1216 | ||
1217 | return serv_connect_resolved(client_p); | |
1218 | } | |
212380e3 AC |
1219 | else |
1220 | { | |
ccda6e3f | 1221 | #ifdef RB_IPV6 |
abe5dd20 JT |
1222 | if(theiripnum.ss_family == AF_INET6) |
1223 | ((struct sockaddr_in6 *)&client_p->localClient->ip)->sin6_port = htons(server_p->port); | |
1224 | else | |
17648928 | 1225 | #endif |
abe5dd20 | 1226 | ((struct sockaddr_in *)&client_p->localClient->ip)->sin_port = htons(server_p->port); |
17648928 | 1227 | |
abe5dd20 JT |
1228 | client_p->localClient->dnsquery = rb_malloc(sizeof(struct DNSQuery)); |
1229 | client_p->localClient->dnsquery->ptr = client_p; | |
1230 | client_p->localClient->dnsquery->callback = serv_connect_dns_callback; | |
1231 | gethost_byname_type(server_p->host, client_p->localClient->dnsquery, | |
ccda6e3f | 1232 | #ifdef RB_IPV6 |
abe5dd20 | 1233 | server_p->aftype == AF_INET6 ? T_AAAA : |
17648928 | 1234 | #endif |
abe5dd20 JT |
1235 | T_A); |
1236 | return 1; | |
1237 | } | |
212380e3 AC |
1238 | } |
1239 | ||
f4a759c5 VY |
1240 | static void |
1241 | serv_connect_ssl_callback(rb_fde_t *F, int status, void *data) | |
1242 | { | |
1243 | struct Client *client_p = data; | |
1244 | rb_fde_t *xF[2]; | |
9ec51326 | 1245 | rb_connect_sockaddr(F, (struct sockaddr *)&client_p->localClient->ip, sizeof(client_p->localClient->ip)); |
f4a759c5 VY |
1246 | if(status != RB_OK) |
1247 | { | |
9ec51326 JT |
1248 | /* Print error message, just like non-SSL. */ |
1249 | serv_connect_callback(F, status, data); | |
f4a759c5 VY |
1250 | return; |
1251 | } | |
eda22d87 JT |
1252 | if(rb_socketpair(AF_UNIX, SOCK_STREAM, 0, &xF[0], &xF[1], "Outgoing ssld connection") == -1) |
1253 | { | |
1254 | ilog_error("rb_socketpair failed for server"); | |
1255 | serv_connect_callback(F, RB_ERROR, data); | |
1256 | return; | |
1257 | ||
1258 | } | |
f4a759c5 VY |
1259 | del_from_cli_fd_hash(client_p); |
1260 | client_p->localClient->F = xF[0]; | |
1261 | add_to_cli_fd_hash(client_p); | |
1262 | ||
1263 | client_p->localClient->ssl_ctl = start_ssld_connect(F, xF[1], rb_get_fd(xF[0])); | |
1264 | SetSSL(client_p); | |
39452169 | 1265 | serv_connect_callback(client_p->localClient->F, RB_OK, client_p); |
c6d72037 VY |
1266 | } |
1267 | ||
212380e3 AC |
1268 | /* |
1269 | * serv_connect_callback() - complete a server connection. | |
1270 | * | |
1271 | * This routine is called after the server connection attempt has | |
1272 | * completed. If unsucessful, an error is sent to ops and the client | |
1273 | * is closed. If sucessful, it goes through the initialisation/check | |
1274 | * procedures, the capabilities are sent, and the socket is then | |
1275 | * marked for reading. | |
1276 | */ | |
1277 | static void | |
6c528b8e | 1278 | serv_connect_callback(rb_fde_t *F, int status, void *data) |
212380e3 AC |
1279 | { |
1280 | struct Client *client_p = data; | |
1281 | struct server_conf *server_p; | |
1282 | char *errstr; | |
1283 | ||
1284 | /* First, make sure its a real client! */ | |
1285 | s_assert(client_p != NULL); | |
6c528b8e | 1286 | s_assert(client_p->localClient->F == F); |
212380e3 AC |
1287 | |
1288 | if(client_p == NULL) | |
1289 | return; | |
1290 | ||
1291 | /* while we were waiting for the callback, its possible this already | |
1292 | * linked in.. --fl | |
1293 | */ | |
1294 | if(find_server(NULL, client_p->name) != NULL) | |
1295 | { | |
1296 | exit_client(client_p, client_p, &me, "Server Exists"); | |
1297 | return; | |
1298 | } | |
1299 | ||
f4a759c5 | 1300 | if(client_p->localClient->ssl_ctl == NULL) |
c6d72037 VY |
1301 | rb_connect_sockaddr(F, (struct sockaddr *)&client_p->localClient->ip, sizeof(client_p->localClient->ip)); |
1302 | ||
212380e3 | 1303 | /* Check the status */ |
6c528b8e | 1304 | if(status != RB_OK) |
212380e3 AC |
1305 | { |
1306 | /* COMM_ERR_TIMEOUT wont have an errno associated with it, | |
1307 | * the others will.. --fl | |
1308 | */ | |
6c528b8e | 1309 | if(status == RB_ERR_TIMEOUT) |
212380e3 AC |
1310 | { |
1311 | sendto_realops_snomask(SNO_GENERAL, is_remote_connect(client_p) ? L_NETWIDE : L_ALL, | |
1312 | "Error connecting to %s[%s]: %s", | |
1313 | client_p->name, | |
212380e3 | 1314 | "255.255.255.255", |
b2f0da88 | 1315 | rb_errstr(status)); |
212380e3 AC |
1316 | ilog(L_SERVER, "Error connecting to %s[%s]: %s", |
1317 | client_p->name, client_p->sockhost, | |
b2f0da88 | 1318 | rb_errstr(status)); |
212380e3 AC |
1319 | } |
1320 | else | |
1321 | { | |
6c528b8e | 1322 | errstr = strerror(rb_get_sockerr(F)); |
212380e3 AC |
1323 | sendto_realops_snomask(SNO_GENERAL, is_remote_connect(client_p) ? L_NETWIDE : L_ALL, |
1324 | "Error connecting to %s[%s]: %s (%s)", | |
1325 | client_p->name, | |
212380e3 | 1326 | "255.255.255.255", |
b2f0da88 | 1327 | rb_errstr(status), errstr); |
212380e3 AC |
1328 | ilog(L_SERVER, "Error connecting to %s[%s]: %s (%s)", |
1329 | client_p->name, client_p->sockhost, | |
b2f0da88 | 1330 | rb_errstr(status), errstr); |
212380e3 AC |
1331 | } |
1332 | ||
b2f0da88 | 1333 | exit_client(client_p, client_p, &me, rb_errstr(status)); |
212380e3 AC |
1334 | return; |
1335 | } | |
1336 | ||
1337 | /* COMM_OK, so continue the connection procedure */ | |
1338 | /* Get the C/N lines */ | |
1339 | if((server_p = client_p->localClient->att_sconf) == NULL) | |
1340 | { | |
1341 | sendto_realops_snomask(SNO_GENERAL, is_remote_connect(client_p) ? L_NETWIDE : L_ALL, "Lost connect{} block for %s", | |
b3ebc7ab | 1342 | client_p->name); |
212380e3 AC |
1343 | exit_client(client_p, client_p, &me, "Lost connect{} block"); |
1344 | return; | |
1345 | } | |
1346 | ||
1347 | /* Next, send the initial handshake */ | |
1348 | SetHandshake(client_p); | |
1349 | ||
ff0cc1e6 AC |
1350 | /* the server may be linking based on certificate fingerprint now. --nenolod */ |
1351 | sendto_one(client_p, "PASS %s TS %d :%s", | |
1352 | EmptyString(server_p->spasswd) ? "*" : server_p->spasswd, TS_CURRENT, me.id); | |
212380e3 AC |
1353 | |
1354 | /* pass my info to the new server */ | |
1355 | send_capabilities(client_p, default_server_capabs | |
1356 | | (ServerConfCompressed(server_p) ? CAP_ZIP_SUPPORTED : 0) | |
1357 | | (ServerConfTb(server_p) ? CAP_TB : 0)); | |
1358 | ||
1359 | sendto_one(client_p, "SERVER %s 1 :%s%s", | |
1360 | me.name, | |
1361 | ConfigServerHide.hidden ? "(H) " : "", me.info); | |
1362 | ||
1363 | /* | |
1364 | * If we've been marked dead because a send failed, just exit | |
1365 | * here now and save everyone the trouble of us ever existing. | |
1366 | */ | |
1367 | if(IsAnyDead(client_p)) | |
1368 | { | |
1369 | sendto_realops_snomask(SNO_GENERAL, is_remote_connect(client_p) ? L_NETWIDE : L_ALL, | |
1370 | "%s went dead during handshake", client_p->name); | |
1371 | exit_client(client_p, client_p, &me, "Went dead during handshake"); | |
1372 | return; | |
1373 | } | |
1374 | ||
1375 | /* don't move to serv_list yet -- we haven't sent a burst! */ | |
1376 | ||
1377 | /* If we get here, we're ok, so lets start reading some data */ | |
6c528b8e | 1378 | read_packet(F, client_p); |
212380e3 | 1379 | } |