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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" | |
212380e3 AC |
43 | #include "s_conf.h" |
44 | #include "s_newconf.h" | |
4016731b | 45 | #include "logger.h" |
212380e3 AC |
46 | #include "s_stats.h" |
47 | #include "s_user.h" | |
48 | #include "scache.h" | |
49 | #include "send.h" | |
50 | #include "client.h" | |
212380e3 AC |
51 | #include "channel.h" /* chcap_usage_counts stuff... */ |
52 | #include "hook.h" | |
53 | #include "msg.h" | |
54015b5f | 54 | #include "reject.h" |
c6d72037 | 55 | #include "sslproc.h" |
346fba92 | 56 | #include "capability.h" |
77d3d2db | 57 | #include "s_assert.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 | 74 | struct CapabilityIndex *serv_capindex = NULL; |
486cd344 | 75 | struct CapabilityIndex *cli_capindex = NULL; |
346fba92 AC |
76 | |
77 | unsigned int CAP_CAP; | |
78 | unsigned int CAP_QS; | |
79 | unsigned int CAP_EX; | |
80 | unsigned int CAP_CHW; | |
81 | unsigned int CAP_IE; | |
82 | unsigned int CAP_KLN; | |
83 | unsigned int CAP_ZIP; | |
84 | unsigned int CAP_KNOCK; | |
85 | unsigned int CAP_TB; | |
86 | unsigned int CAP_UNKLN; | |
87 | unsigned int CAP_CLUSTER; | |
88 | unsigned int CAP_ENCAP; | |
89 | unsigned int CAP_TS6; | |
90 | unsigned int CAP_SERVICE; | |
91 | unsigned int CAP_RSFNC; | |
92 | unsigned int CAP_SAVE; | |
93 | unsigned int CAP_EUID; | |
94 | unsigned int CAP_EOPMOD; | |
95 | unsigned int CAP_BAN; | |
96 | unsigned int CAP_MLOCK; | |
97 | ||
98 | /* | |
99 | * initialize our builtin capability table. --nenolod | |
100 | */ | |
101 | void | |
102 | init_builtin_capabs(void) | |
103 | { | |
885cd603 | 104 | serv_capindex = capability_index_create("server capabilities"); |
346fba92 | 105 | |
22cae20f JT |
106 | /* These two are not set via CAPAB/GCAP keywords. */ |
107 | CAP_CAP = capability_put_anonymous(serv_capindex); | |
108 | CAP_TS6 = capability_put_anonymous(serv_capindex); | |
109 | ||
486cd344 AC |
110 | CAP_QS = capability_put(serv_capindex, "QS", NULL); |
111 | CAP_EX = capability_put(serv_capindex, "EX", NULL); | |
112 | CAP_CHW = capability_put(serv_capindex, "CHW", NULL); | |
113 | CAP_IE = capability_put(serv_capindex, "IE", NULL); | |
114 | CAP_KLN = capability_put(serv_capindex, "KLN", NULL); | |
115 | CAP_KNOCK = capability_put(serv_capindex, "KNOCK", NULL); | |
116 | CAP_ZIP = capability_put(serv_capindex, "ZIP", NULL); | |
117 | CAP_TB = capability_put(serv_capindex, "TB", NULL); | |
118 | CAP_UNKLN = capability_put(serv_capindex, "UNKLN", NULL); | |
119 | CAP_CLUSTER = capability_put(serv_capindex, "CLUSTER", NULL); | |
120 | CAP_ENCAP = capability_put(serv_capindex, "ENCAP", NULL); | |
121 | CAP_SERVICE = capability_put(serv_capindex, "SERVICES", NULL); | |
122 | CAP_RSFNC = capability_put(serv_capindex, "RSFNC", NULL); | |
123 | CAP_SAVE = capability_put(serv_capindex, "SAVE", NULL); | |
124 | CAP_EUID = capability_put(serv_capindex, "EUID", NULL); | |
125 | CAP_EOPMOD = capability_put(serv_capindex, "EOPMOD", NULL); | |
126 | CAP_BAN = capability_put(serv_capindex, "BAN", NULL); | |
127 | CAP_MLOCK = capability_put(serv_capindex, "MLOCK", NULL); | |
58b60c20 JT |
128 | |
129 | capability_require(serv_capindex, "QS"); | |
d0c2fc82 JT |
130 | capability_require(serv_capindex, "EX"); |
131 | capability_require(serv_capindex, "IE"); | |
58b60c20 | 132 | capability_require(serv_capindex, "ENCAP"); |
486cd344 AC |
133 | |
134 | cli_capindex = capability_index_create("client capabilities"); | |
346fba92 | 135 | } |
212380e3 | 136 | |
212380e3 | 137 | static CNCB serv_connect_callback; |
c6d72037 | 138 | static CNCB serv_connect_ssl_callback; |
212380e3 AC |
139 | |
140 | /* | |
141 | * hunt_server - Do the basic thing in delivering the message (command) | |
142 | * across the relays to the specific server (server) for | |
143 | * actions. | |
144 | * | |
145 | * Note: The command is a format string and *MUST* be | |
146 | * of prefixed style (e.g. ":%s COMMAND %s ..."). | |
147 | * Command can have only max 8 parameters. | |
148 | * | |
149 | * server parv[server] is the parameter identifying the | |
150 | * target server. | |
151 | * | |
152 | * *WARNING* | |
153 | * parv[server] is replaced with the pointer to the | |
154 | * real servername from the matched client (I'm lazy | |
155 | * now --msa). | |
156 | * | |
157 | * returns: (see #defines) | |
158 | */ | |
159 | int | |
160 | hunt_server(struct Client *client_p, struct Client *source_p, | |
161 | const char *command, int server, int parc, const char *parv[]) | |
162 | { | |
163 | struct Client *target_p; | |
164 | int wilds; | |
330fc5c1 | 165 | rb_dlink_node *ptr; |
212380e3 AC |
166 | const char *old; |
167 | char *new; | |
168 | ||
169 | /* | |
170 | * Assume it's me, if no server | |
171 | */ | |
172 | if(parc <= server || EmptyString(parv[server]) || | |
4d7a1ee5 | 173 | match(parv[server], me.name) || (strcmp(parv[server], me.id) == 0)) |
212380e3 | 174 | return (HUNTED_ISME); |
346fba92 | 175 | |
212380e3 AC |
176 | new = LOCAL_COPY(parv[server]); |
177 | ||
178 | /* | |
179 | * These are to pickup matches that would cause the following | |
180 | * message to go in the wrong direction while doing quick fast | |
181 | * non-matching lookups. | |
182 | */ | |
183 | if(MyClient(source_p)) | |
184 | target_p = find_named_client(new); | |
185 | else | |
186 | target_p = find_client(new); | |
187 | ||
188 | if(target_p) | |
189 | if(target_p->from == source_p->from && !MyConnect(target_p)) | |
190 | target_p = NULL; | |
191 | ||
212380e3 AC |
192 | collapse(new); |
193 | wilds = (strchr(new, '?') || strchr(new, '*')); | |
194 | ||
195 | /* | |
196 | * Again, if there are no wild cards involved in the server | |
197 | * name, use the hash lookup | |
198 | */ | |
cd300c1b | 199 | if(!target_p && wilds) |
212380e3 | 200 | { |
2fb07961 | 201 | RB_DLINK_FOREACH(ptr, global_serv_list.head) |
212380e3 | 202 | { |
cd300c1b | 203 | if(match(new, ((struct Client *) (ptr->data))->name)) |
212380e3 | 204 | { |
cd300c1b JT |
205 | target_p = ptr->data; |
206 | break; | |
212380e3 AC |
207 | } |
208 | } | |
209 | } | |
210 | ||
cd300c1b JT |
211 | if(target_p && !IsRegistered(target_p)) |
212 | target_p = NULL; | |
213 | ||
212380e3 AC |
214 | if(target_p) |
215 | { | |
212380e3 AC |
216 | if(IsMe(target_p) || MyClient(target_p)) |
217 | return HUNTED_ISME; | |
218 | ||
219 | old = parv[server]; | |
220 | parv[server] = get_id(target_p, target_p); | |
221 | ||
222 | sendto_one(target_p, command, get_id(source_p, target_p), | |
223 | parv[1], parv[2], parv[3], parv[4], parv[5], parv[6], parv[7], parv[8]); | |
224 | parv[server] = old; | |
225 | return (HUNTED_PASS); | |
226 | } | |
227 | ||
95d36ef5 | 228 | if(MyClient(source_p) || !IsDigit(parv[server][0])) |
212380e3 AC |
229 | sendto_one_numeric(source_p, ERR_NOSUCHSERVER, |
230 | form_str(ERR_NOSUCHSERVER), parv[server]); | |
231 | return (HUNTED_NOSUCH); | |
232 | } | |
233 | ||
234 | /* | |
235 | * try_connections - scan through configuration and try new connections. | |
236 | * Returns the calendar time when the next call to this | |
237 | * function should be made latest. (No harm done if this | |
238 | * is called earlier or later...) | |
239 | */ | |
240 | void | |
241 | try_connections(void *unused) | |
242 | { | |
243 | struct Client *client_p; | |
244 | struct server_conf *server_p = NULL; | |
245 | struct server_conf *tmp_p; | |
246 | struct Class *cltmp; | |
330fc5c1 | 247 | rb_dlink_node *ptr; |
212380e3 AC |
248 | int connecting = FALSE; |
249 | int confrq = 0; | |
250 | time_t next = 0; | |
251 | ||
5cefa1d6 | 252 | RB_DLINK_FOREACH(ptr, server_conf_list.head) |
212380e3 AC |
253 | { |
254 | tmp_p = ptr->data; | |
255 | ||
256 | if(ServerConfIllegal(tmp_p) || !ServerConfAutoconn(tmp_p)) | |
257 | continue; | |
258 | ||
f4a759c5 VY |
259 | /* don't allow ssl connections if ssl isn't setup */ |
260 | if(ServerConfSSL(tmp_p) && (!ssl_ok || !get_ssld_count())) | |
c6d72037 VY |
261 | continue; |
262 | ||
212380e3 AC |
263 | cltmp = tmp_p->class; |
264 | ||
265 | /* | |
266 | * Skip this entry if the use of it is still on hold until | |
267 | * future. Otherwise handle this entry (and set it on hold | |
268 | * until next time). Will reset only hold times, if already | |
269 | * made one successfull connection... [this algorithm is | |
270 | * a bit fuzzy... -- msa >;) ] | |
271 | */ | |
e3354945 | 272 | if(tmp_p->hold > rb_current_time()) |
212380e3 AC |
273 | { |
274 | if(next > tmp_p->hold || next == 0) | |
275 | next = tmp_p->hold; | |
276 | continue; | |
277 | } | |
278 | ||
279 | confrq = get_con_freq(cltmp); | |
e3354945 | 280 | tmp_p->hold = rb_current_time() + confrq; |
212380e3 AC |
281 | |
282 | /* | |
283 | * Found a CONNECT config with port specified, scan clients | |
284 | * and see if this server is already connected? | |
285 | */ | |
286 | client_p = find_server(NULL, tmp_p->name); | |
287 | ||
288 | if(!client_p && (CurrUsers(cltmp) < MaxUsers(cltmp)) && !connecting) | |
289 | { | |
290 | server_p = tmp_p; | |
291 | ||
292 | /* We connect only one at time... */ | |
293 | connecting = TRUE; | |
294 | } | |
295 | ||
296 | if((next > tmp_p->hold) || (next == 0)) | |
297 | next = tmp_p->hold; | |
298 | } | |
299 | ||
300 | /* TODO: change this to set active flag to 0 when added to event! --Habeeb */ | |
301 | if(GlobalSetOptions.autoconn == 0) | |
302 | return; | |
303 | ||
304 | if(!connecting) | |
305 | return; | |
306 | ||
307 | /* move this connect entry to end.. */ | |
330fc5c1 AC |
308 | rb_dlinkDelete(&server_p->node, &server_conf_list); |
309 | rb_dlinkAddTail(server_p, &server_p->node, &server_conf_list); | |
212380e3 AC |
310 | |
311 | /* | |
312 | * We used to only print this if serv_connect() actually | |
b2f0da88 | 313 | * suceeded, but since rb_tcp_connect() can call the callback |
212380e3 AC |
314 | * immediately if there is an error, we were getting error messages |
315 | * in the wrong order. SO, we just print out the activated line, | |
316 | * and let serv_connect() / serv_connect_callback() print an | |
317 | * error afterwards if it fails. | |
318 | * -- adrian | |
319 | */ | |
212380e3 AC |
320 | sendto_realops_snomask(SNO_GENERAL, L_ALL, |
321 | "Connection to %s activated", | |
322 | server_p->name); | |
212380e3 AC |
323 | |
324 | serv_connect(server_p, 0); | |
325 | } | |
326 | ||
327 | int | |
328 | check_server(const char *name, struct Client *client_p) | |
329 | { | |
330 | struct server_conf *server_p = NULL; | |
331 | struct server_conf *tmp_p; | |
330fc5c1 | 332 | rb_dlink_node *ptr; |
212380e3 | 333 | int error = -1; |
e69375f3 | 334 | const char *encr; |
212380e3 AC |
335 | |
336 | s_assert(NULL != client_p); | |
337 | if(client_p == NULL) | |
338 | return error; | |
339 | ||
340 | if(!(client_p->localClient->passwd)) | |
341 | return -2; | |
342 | ||
343 | if(strlen(name) > HOSTLEN) | |
344 | return -4; | |
345 | ||
5cefa1d6 | 346 | RB_DLINK_FOREACH(ptr, server_conf_list.head) |
212380e3 AC |
347 | { |
348 | tmp_p = ptr->data; | |
349 | ||
350 | if(ServerConfIllegal(tmp_p)) | |
351 | continue; | |
352 | ||
353 | if(!match(tmp_p->name, name)) | |
354 | continue; | |
355 | ||
356 | error = -3; | |
357 | ||
358 | /* XXX: Fix me for IPv6 */ | |
359 | /* XXX sockhost is the IPv4 ip as a string */ | |
360 | if(match(tmp_p->host, client_p->host) || | |
361 | match(tmp_p->host, client_p->sockhost)) | |
362 | { | |
363 | error = -2; | |
364 | ||
ff0cc1e6 | 365 | if(tmp_p->passwd) |
212380e3 | 366 | { |
ff0cc1e6 | 367 | if(ServerConfEncrypted(tmp_p)) |
212380e3 | 368 | { |
e69375f3 JT |
369 | encr = rb_crypt(client_p->localClient->passwd, |
370 | tmp_p->passwd); | |
371 | if(encr != NULL && !strcmp(tmp_p->passwd, encr)) | |
ff0cc1e6 AC |
372 | { |
373 | server_p = tmp_p; | |
374 | break; | |
375 | } | |
376 | else | |
377 | continue; | |
212380e3 | 378 | } |
ff0cc1e6 AC |
379 | else if(strcmp(tmp_p->passwd, client_p->localClient->passwd)) |
380 | continue; | |
212380e3 | 381 | } |
ff0cc1e6 AC |
382 | |
383 | if(tmp_p->certfp) | |
212380e3 | 384 | { |
ff0cc1e6 AC |
385 | if(!client_p->certfp || strcasecmp(tmp_p->certfp, client_p->certfp) != 0) |
386 | continue; | |
212380e3 | 387 | } |
ff0cc1e6 AC |
388 | |
389 | server_p = tmp_p; | |
390 | break; | |
212380e3 AC |
391 | } |
392 | } | |
393 | ||
394 | if(server_p == NULL) | |
395 | return error; | |
396 | ||
f4a759c5 VY |
397 | if(ServerConfSSL(server_p) && client_p->localClient->ssl_ctl == NULL) |
398 | { | |
399 | return -5; | |
c6d72037 VY |
400 | } |
401 | ||
212380e3 AC |
402 | attach_server_conf(client_p, server_p); |
403 | ||
404 | /* clear ZIP/TB if they support but we dont want them */ | |
405 | #ifdef HAVE_LIBZ | |
406 | if(!ServerConfCompressed(server_p)) | |
407 | #endif | |
408 | ClearCap(client_p, CAP_ZIP); | |
409 | ||
410 | if(!ServerConfTb(server_p)) | |
411 | ClearCap(client_p, CAP_TB); | |
412 | ||
413 | return 0; | |
414 | } | |
415 | ||
416 | /* | |
417 | * send_capabilities | |
418 | * | |
419 | * inputs - Client pointer to send to | |
420 | * - int flag of capabilities that this server has | |
421 | * output - NONE | |
422 | * side effects - send the CAPAB line to a server -orabidoo | |
423 | * | |
424 | */ | |
425 | void | |
346fba92 | 426 | send_capabilities(struct Client *client_p, unsigned int cap_can_send) |
212380e3 | 427 | { |
346fba92 | 428 | sendto_one(client_p, "CAPAB :%s", capability_index_list(serv_capindex, cap_can_send)); |
212380e3 AC |
429 | } |
430 | ||
431a1a27 JT |
431 | static void |
432 | burst_ban(struct Client *client_p) | |
433 | { | |
434 | rb_dlink_node *ptr; | |
435 | struct ConfItem *aconf; | |
436 | const char *type, *oper; | |
437 | /* +5 for !,@,{,} and null */ | |
438 | char operbuf[NICKLEN + USERLEN + HOSTLEN + HOSTLEN + 5]; | |
439 | char *p; | |
440 | size_t melen; | |
441 | ||
442 | melen = strlen(me.name); | |
443 | RB_DLINK_FOREACH(ptr, prop_bans.head) | |
444 | { | |
445 | aconf = ptr->data; | |
446 | ||
447 | /* Skip expired stuff. */ | |
448 | if(aconf->lifetime < rb_current_time()) | |
449 | continue; | |
450 | switch(aconf->status & ~CONF_ILLEGAL) | |
451 | { | |
452 | case CONF_KILL: type = "K"; break; | |
453 | case CONF_DLINE: type = "D"; break; | |
454 | case CONF_XLINE: type = "X"; break; | |
455 | case CONF_RESV_NICK: type = "R"; break; | |
456 | case CONF_RESV_CHANNEL: type = "R"; break; | |
457 | default: | |
458 | continue; | |
459 | } | |
460 | oper = aconf->info.oper; | |
461 | if(aconf->flags & CONF_FLAGS_MYOPER) | |
462 | { | |
463 | /* Our operator{} names may not be meaningful | |
464 | * to other servers, so rewrite to our server | |
465 | * name. | |
466 | */ | |
467 | rb_strlcpy(operbuf, aconf->info.oper, sizeof buf); | |
468 | p = strrchr(operbuf, '{'); | |
ee6da53d JT |
469 | if (p != NULL && |
470 | operbuf + sizeof operbuf - p > (ptrdiff_t)(melen + 2)) | |
431a1a27 JT |
471 | { |
472 | memcpy(p + 1, me.name, melen); | |
473 | p[melen + 1] = '}'; | |
474 | p[melen + 2] = '\0'; | |
475 | oper = operbuf; | |
476 | } | |
477 | } | |
cedb7d05 | 478 | sendto_one(client_p, ":%s BAN %s %s %s %lu %d %d %s :%s%s%s", |
431a1a27 | 479 | me.id, |
431a1a27 JT |
480 | type, |
481 | aconf->user ? aconf->user : "*", aconf->host, | |
482 | (unsigned long)aconf->created, | |
483 | (int)(aconf->hold - aconf->created), | |
484 | (int)(aconf->lifetime - aconf->created), | |
485 | oper, | |
486 | aconf->passwd, | |
487 | aconf->spasswd ? "|" : "", | |
488 | aconf->spasswd ? aconf->spasswd : ""); | |
489 | } | |
490 | } | |
491 | ||
212380e3 AC |
492 | /* burst_modes_TS6() |
493 | * | |
494 | * input - client to burst to, channel name, list to burst, mode flag | |
495 | * output - | |
496 | * side effects - client is sent a list of +b, +e, or +I modes | |
497 | */ | |
498 | static void | |
55abcbb2 | 499 | burst_modes_TS6(struct Client *client_p, struct Channel *chptr, |
330fc5c1 | 500 | rb_dlink_list *list, char flag) |
212380e3 | 501 | { |
330fc5c1 | 502 | rb_dlink_node *ptr; |
212380e3 AC |
503 | struct Ban *banptr; |
504 | char *t; | |
505 | int tlen; | |
506 | int mlen; | |
507 | int cur_len; | |
508 | ||
5203cba5 | 509 | cur_len = mlen = sprintf(buf, ":%s BMASK %ld %s %c :", |
212380e3 AC |
510 | me.id, (long) chptr->channelts, chptr->chname, flag); |
511 | t = buf + mlen; | |
512 | ||
5cefa1d6 | 513 | RB_DLINK_FOREACH(ptr, list->head) |
212380e3 AC |
514 | { |
515 | banptr = ptr->data; | |
516 | ||
7f0fc87d | 517 | tlen = strlen(banptr->banstr) + (banptr->forward ? strlen(banptr->forward) + 1 : 0) + 1; |
212380e3 AC |
518 | |
519 | /* uh oh */ | |
520 | if(cur_len + tlen > BUFSIZE - 3) | |
521 | { | |
522 | /* the one we're trying to send doesnt fit at all! */ | |
523 | if(cur_len == mlen) | |
524 | { | |
525 | s_assert(0); | |
526 | continue; | |
527 | } | |
528 | ||
529 | /* chop off trailing space and send.. */ | |
530 | *(t-1) = '\0'; | |
531 | sendto_one(client_p, "%s", buf); | |
532 | cur_len = mlen; | |
533 | t = buf + mlen; | |
534 | } | |
535 | ||
7f0fc87d | 536 | if (banptr->forward) |
5203cba5 | 537 | sprintf(t, "%s$%s ", banptr->banstr, banptr->forward); |
7f0fc87d | 538 | else |
5203cba5 | 539 | sprintf(t, "%s ", banptr->banstr); |
212380e3 AC |
540 | t += tlen; |
541 | cur_len += tlen; | |
542 | } | |
543 | ||
544 | /* cant ever exit the loop above without having modified buf, | |
545 | * chop off trailing space and send. | |
546 | */ | |
547 | *(t-1) = '\0'; | |
548 | sendto_one(client_p, "%s", buf); | |
549 | } | |
550 | ||
212380e3 AC |
551 | /* |
552 | * burst_TS6 | |
55abcbb2 | 553 | * |
212380e3 AC |
554 | * inputs - client (server) to send nick towards |
555 | * - client to send nick for | |
556 | * output - NONE | |
557 | * side effects - NICK message is sent towards given client_p | |
558 | */ | |
559 | static void | |
560 | burst_TS6(struct Client *client_p) | |
561 | { | |
9744d53e | 562 | char ubuf[BUFSIZE]; |
212380e3 AC |
563 | struct Client *target_p; |
564 | struct Channel *chptr; | |
565 | struct membership *msptr; | |
566 | hook_data_client hclientinfo; | |
567 | hook_data_channel hchaninfo; | |
330fc5c1 AC |
568 | rb_dlink_node *ptr; |
569 | rb_dlink_node *uptr; | |
212380e3 AC |
570 | char *t; |
571 | int tlen, mlen; | |
572 | int cur_len = 0; | |
573 | ||
574 | hclientinfo.client = hchaninfo.client = client_p; | |
575 | ||
5cefa1d6 | 576 | RB_DLINK_FOREACH(ptr, global_client_list.head) |
212380e3 AC |
577 | { |
578 | target_p = ptr->data; | |
579 | ||
580 | if(!IsPerson(target_p)) | |
581 | continue; | |
582 | ||
29c92cf9 | 583 | send_umode(NULL, target_p, 0, ubuf); |
212380e3 AC |
584 | if(!*ubuf) |
585 | { | |
586 | ubuf[0] = '+'; | |
587 | ubuf[1] = '\0'; | |
588 | } | |
589 | ||
bea2295f | 590 | if(IsCapable(client_p, CAP_EUID)) |
212380e3 AC |
591 | sendto_one(client_p, ":%s EUID %s %d %ld %s %s %s %s %s %s %s :%s", |
592 | target_p->servptr->id, target_p->name, | |
55abcbb2 | 593 | target_p->hopcount + 1, |
212380e3 AC |
594 | (long) target_p->tsinfo, ubuf, |
595 | target_p->username, target_p->host, | |
596 | IsIPSpoof(target_p) ? "0" : target_p->sockhost, | |
597 | target_p->id, | |
598 | IsDynSpoof(target_p) ? target_p->orighost : "*", | |
599 | EmptyString(target_p->user->suser) ? "*" : target_p->user->suser, | |
600 | target_p->info); | |
bea2295f | 601 | else |
212380e3 AC |
602 | sendto_one(client_p, ":%s UID %s %d %ld %s %s %s %s %s :%s", |
603 | target_p->servptr->id, target_p->name, | |
55abcbb2 | 604 | target_p->hopcount + 1, |
212380e3 AC |
605 | (long) target_p->tsinfo, ubuf, |
606 | target_p->username, target_p->host, | |
607 | IsIPSpoof(target_p) ? "0" : target_p->sockhost, | |
608 | target_p->id, target_p->info); | |
bea2295f | 609 | |
8eda114a JT |
610 | if(!EmptyString(target_p->certfp)) |
611 | sendto_one(client_p, ":%s ENCAP * CERTFP :%s", | |
612 | use_id(target_p), target_p->certfp); | |
613 | ||
bea2295f | 614 | if(!IsCapable(client_p, CAP_EUID)) |
212380e3 AC |
615 | { |
616 | if(IsDynSpoof(target_p)) | |
617 | sendto_one(client_p, ":%s ENCAP * REALHOST %s", | |
618 | use_id(target_p), target_p->orighost); | |
619 | if(!EmptyString(target_p->user->suser)) | |
620 | sendto_one(client_p, ":%s ENCAP * LOGIN %s", | |
621 | use_id(target_p), target_p->user->suser); | |
622 | } | |
623 | ||
c127b45b | 624 | if(ConfigFileEntry.burst_away && !EmptyString(target_p->user->away)) |
212380e3 AC |
625 | sendto_one(client_p, ":%s AWAY :%s", |
626 | use_id(target_p), | |
c127b45b | 627 | target_p->user->away); |
212380e3 AC |
628 | |
629 | hclientinfo.target = target_p; | |
630 | call_hook(h_burst_client, &hclientinfo); | |
631 | } | |
632 | ||
5cefa1d6 | 633 | RB_DLINK_FOREACH(ptr, global_channel_list.head) |
212380e3 AC |
634 | { |
635 | chptr = ptr->data; | |
636 | ||
637 | if(*chptr->chname != '#') | |
638 | continue; | |
639 | ||
5203cba5 | 640 | cur_len = mlen = sprintf(buf, ":%s SJOIN %ld %s %s :", me.id, |
212380e3 AC |
641 | (long) chptr->channelts, chptr->chname, |
642 | channel_modes(chptr, client_p)); | |
643 | ||
644 | t = buf + mlen; | |
645 | ||
5cefa1d6 | 646 | RB_DLINK_FOREACH(uptr, chptr->members.head) |
212380e3 AC |
647 | { |
648 | msptr = uptr->data; | |
649 | ||
650 | tlen = strlen(use_id(msptr->client_p)) + 1; | |
651 | if(is_chanop(msptr)) | |
652 | tlen++; | |
653 | if(is_voiced(msptr)) | |
654 | tlen++; | |
655 | ||
656 | if(cur_len + tlen >= BUFSIZE - 3) | |
657 | { | |
658 | *(t-1) = '\0'; | |
659 | sendto_one(client_p, "%s", buf); | |
660 | cur_len = mlen; | |
661 | t = buf + mlen; | |
662 | } | |
663 | ||
5203cba5 | 664 | sprintf(t, "%s%s ", find_channel_status(msptr, 1), |
212380e3 AC |
665 | use_id(msptr->client_p)); |
666 | ||
667 | cur_len += tlen; | |
668 | t += tlen; | |
669 | } | |
670 | ||
330fc5c1 | 671 | if (rb_dlink_list_length(&chptr->members) > 0) |
212380e3 AC |
672 | { |
673 | /* remove trailing space */ | |
674 | *(t-1) = '\0'; | |
675 | } | |
676 | sendto_one(client_p, "%s", buf); | |
677 | ||
330fc5c1 | 678 | if(rb_dlink_list_length(&chptr->banlist) > 0) |
212380e3 AC |
679 | burst_modes_TS6(client_p, chptr, &chptr->banlist, 'b'); |
680 | ||
681 | if(IsCapable(client_p, CAP_EX) && | |
330fc5c1 | 682 | rb_dlink_list_length(&chptr->exceptlist) > 0) |
212380e3 AC |
683 | burst_modes_TS6(client_p, chptr, &chptr->exceptlist, 'e'); |
684 | ||
685 | if(IsCapable(client_p, CAP_IE) && | |
330fc5c1 | 686 | rb_dlink_list_length(&chptr->invexlist) > 0) |
212380e3 AC |
687 | burst_modes_TS6(client_p, chptr, &chptr->invexlist, 'I'); |
688 | ||
330fc5c1 | 689 | if(rb_dlink_list_length(&chptr->quietlist) > 0) |
212380e3 AC |
690 | burst_modes_TS6(client_p, chptr, &chptr->quietlist, 'q'); |
691 | ||
692 | if(IsCapable(client_p, CAP_TB) && chptr->topic != NULL) | |
693 | sendto_one(client_p, ":%s TB %s %ld %s%s:%s", | |
694 | me.id, chptr->chname, (long) chptr->topic_time, | |
695 | ConfigChannel.burst_topicwho ? chptr->topic_info : "", | |
696 | ConfigChannel.burst_topicwho ? " " : "", | |
697 | chptr->topic); | |
698 | ||
084ecbe0 | 699 | if(IsCapable(client_p, CAP_MLOCK)) |
6b8db2da | 700 | sendto_one(client_p, ":%s MLOCK %ld %s :%s", |
084ecbe0 | 701 | me.id, (long) chptr->channelts, chptr->chname, |
6b8db2da | 702 | EmptyString(chptr->mode_lock) ? "" : chptr->mode_lock); |
084ecbe0 | 703 | |
212380e3 AC |
704 | hchaninfo.chptr = chptr; |
705 | call_hook(h_burst_channel, &hchaninfo); | |
706 | } | |
707 | ||
708 | hclientinfo.target = NULL; | |
709 | call_hook(h_burst_finished, &hclientinfo); | |
710 | } | |
711 | ||
712 | /* | |
713 | * show_capabilities - show current server capabilities | |
714 | * | |
715 | * inputs - pointer to an struct Client | |
716 | * output - pointer to static string | |
717 | * side effects - build up string representing capabilities of server listed | |
718 | */ | |
719 | const char * | |
720 | show_capabilities(struct Client *target_p) | |
721 | { | |
722 | static char msgbuf[BUFSIZE]; | |
346fba92 AC |
723 | |
724 | *msgbuf = '\0'; | |
212380e3 | 725 | |
f4a759c5 VY |
726 | if(has_id(target_p)) |
727 | rb_strlcpy(msgbuf, " TS6", sizeof(msgbuf)); | |
f4a759c5 VY |
728 | |
729 | if(IsSSL(target_p)) | |
730 | rb_strlcat(msgbuf, " SSL", sizeof(msgbuf)); | |
212380e3 AC |
731 | |
732 | if(!IsServer(target_p) || !target_p->serv->caps) /* short circuit if no caps */ | |
f4a759c5 | 733 | return msgbuf + 1; |
212380e3 | 734 | |
89fd463e | 735 | rb_strlcat(msgbuf, " ", sizeof(msgbuf)); |
346fba92 | 736 | rb_strlcat(msgbuf, capability_index_list(serv_capindex, target_p->serv->caps), sizeof(msgbuf)); |
212380e3 | 737 | |
f4a759c5 | 738 | return msgbuf + 1; |
212380e3 AC |
739 | } |
740 | ||
741 | /* | |
742 | * server_estab | |
743 | * | |
744 | * inputs - pointer to a struct Client | |
745 | * output - | |
746 | * side effects - | |
747 | */ | |
748 | int | |
749 | server_estab(struct Client *client_p) | |
750 | { | |
751 | struct Client *target_p; | |
752 | struct server_conf *server_p; | |
753 | hook_data_client hdata; | |
754 | char *host; | |
330fc5c1 | 755 | rb_dlink_node *ptr; |
6c528b8e | 756 | char note[HOSTLEN + 15]; |
212380e3 AC |
757 | |
758 | s_assert(NULL != client_p); | |
759 | if(client_p == NULL) | |
760 | return -1; | |
212380e3 AC |
761 | |
762 | host = client_p->name; | |
763 | ||
764 | if((server_p = client_p->localClient->att_sconf) == NULL) | |
765 | { | |
766 | /* This shouldn't happen, better tell the ops... -A1kmm */ | |
767 | sendto_realops_snomask(SNO_GENERAL, is_remote_connect(client_p) ? L_NETWIDE : L_ALL, | |
768 | "Warning: Lost connect{} block for server %s!", host); | |
769 | return exit_client(client_p, client_p, client_p, "Lost connect{} block!"); | |
770 | } | |
771 | ||
772 | /* We shouldn't have to check this, it should already done before | |
773 | * server_estab is called. -A1kmm | |
774 | */ | |
775 | if(client_p->localClient->passwd) | |
776 | { | |
777 | memset(client_p->localClient->passwd, 0, strlen(client_p->localClient->passwd)); | |
637c4932 | 778 | rb_free(client_p->localClient->passwd); |
212380e3 AC |
779 | client_p->localClient->passwd = NULL; |
780 | } | |
781 | ||
782 | /* Its got identd , since its a server */ | |
783 | SetGotId(client_p); | |
784 | ||
785 | /* If there is something in the serv_list, it might be this | |
786 | * connecting server.. | |
787 | */ | |
788 | if(!ServerInfo.hub && serv_list.head) | |
789 | { | |
790 | if(client_p != serv_list.head->data || serv_list.head->next) | |
791 | { | |
47adde3d | 792 | ServerStats.is_ref++; |
212380e3 AC |
793 | sendto_one(client_p, "ERROR :I'm a leaf not a hub"); |
794 | return exit_client(client_p, client_p, client_p, "I'm a leaf"); | |
795 | } | |
796 | } | |
797 | ||
798 | if(IsUnknown(client_p)) | |
799 | { | |
ff0cc1e6 | 800 | /* the server may be linking based on certificate fingerprint now. --nenolod */ |
55abcbb2 | 801 | sendto_one(client_p, "PASS %s TS %d :%s", |
ff0cc1e6 | 802 | EmptyString(server_p->spasswd) ? "*" : server_p->spasswd, TS_CURRENT, me.id); |
212380e3 AC |
803 | |
804 | /* pass info to new server */ | |
805 | send_capabilities(client_p, default_server_capabs | |
806 | | (ServerConfCompressed(server_p) ? CAP_ZIP_SUPPORTED : 0) | |
807 | | (ServerConfTb(server_p) ? CAP_TB : 0)); | |
808 | ||
809 | sendto_one(client_p, "SERVER %s 1 :%s%s", | |
810 | me.name, | |
811 | ConfigServerHide.hidden ? "(H) " : "", | |
812 | (me.info[0]) ? (me.info) : "IRCers United"); | |
813 | } | |
814 | ||
6c528b8e | 815 | if(!rb_set_buffers(client_p->localClient->F, READBUF_SIZE)) |
825ddf13 | 816 | ilog_error("rb_set_buffers failed for server"); |
212380e3 | 817 | |
c6d72037 | 818 | /* Enable compression now */ |
f4a759c5 VY |
819 | if(IsCapable(client_p, CAP_ZIP)) |
820 | { | |
821 | start_zlib_session(client_p); | |
822 | } | |
8982edb0 | 823 | sendto_one(client_p, "SVINFO %d %d 0 :%ld", TS_CURRENT, TS_MIN, (long int)rb_current_time()); |
212380e3 AC |
824 | |
825 | client_p->servptr = &me; | |
826 | ||
827 | if(IsAnyDead(client_p)) | |
828 | return CLIENT_EXITED; | |
829 | ||
830 | SetServer(client_p); | |
831 | ||
330fc5c1 | 832 | rb_dlinkAdd(client_p, &client_p->lnode, &me.serv->servers); |
330fc5c1 AC |
833 | rb_dlinkMoveNode(&client_p->localClient->tnode, &unknown_list, &serv_list); |
834 | rb_dlinkAddTailAlloc(client_p, &global_serv_list); | |
212380e3 AC |
835 | |
836 | if(has_id(client_p)) | |
837 | add_to_id_hash(client_p->id, client_p); | |
838 | ||
839 | add_to_client_hash(client_p->name, client_p); | |
840 | /* doesnt duplicate client_p->serv if allocated this struct already */ | |
841 | make_server(client_p); | |
212380e3 AC |
842 | |
843 | client_p->serv->caps = client_p->localClient->caps; | |
844 | ||
845 | if(client_p->localClient->fullcaps) | |
846 | { | |
47a03750 | 847 | client_p->serv->fullcaps = rb_strdup(client_p->localClient->fullcaps); |
637c4932 | 848 | rb_free(client_p->localClient->fullcaps); |
212380e3 AC |
849 | client_p->localClient->fullcaps = NULL; |
850 | } | |
851 | ||
994544c2 | 852 | client_p->serv->nameinfo = scache_connect(client_p->name, client_p->info, IsHidden(client_p)); |
e3354945 | 853 | client_p->localClient->firsttime = rb_current_time(); |
212380e3 AC |
854 | /* fixing eob timings.. -gnp */ |
855 | ||
330fc5c1 | 856 | if((rb_dlink_list_length(&lclient_list) + rb_dlink_list_length(&serv_list)) > |
2f15f871 | 857 | (unsigned long)MaxConnectionCount) |
55abcbb2 | 858 | MaxConnectionCount = rb_dlink_list_length(&lclient_list) + |
330fc5c1 | 859 | rb_dlink_list_length(&serv_list); |
2f15f871 | 860 | |
212380e3 AC |
861 | /* Show the real host/IP to admins */ |
862 | sendto_realops_snomask(SNO_GENERAL, L_ALL, | |
863 | "Link with %s established: (%s) link", | |
b3ebc7ab | 864 | client_p->name, |
212380e3 AC |
865 | show_capabilities(client_p)); |
866 | ||
867 | ilog(L_SERVER, "Link with %s established: (%s) link", | |
868 | log_client_name(client_p, SHOW_IP), show_capabilities(client_p)); | |
869 | ||
870 | hdata.client = &me; | |
871 | hdata.target = client_p; | |
872 | call_hook(h_server_introduced, &hdata); | |
873 | ||
5203cba5 | 874 | snprintf(note, sizeof(note), "Server: %s", client_p->name); |
c6d72037 | 875 | rb_note(client_p->localClient->F, note); |
212380e3 AC |
876 | |
877 | /* | |
878 | ** Old sendto_serv_but_one() call removed because we now | |
879 | ** need to send different names to different servers | |
880 | ** (domain name matching) Send new server to other servers. | |
881 | */ | |
5cefa1d6 | 882 | RB_DLINK_FOREACH(ptr, serv_list.head) |
212380e3 AC |
883 | { |
884 | target_p = ptr->data; | |
885 | ||
886 | if(target_p == client_p) | |
887 | continue; | |
888 | ||
889 | if(has_id(target_p) && has_id(client_p)) | |
890 | { | |
891 | sendto_one(target_p, ":%s SID %s 2 %s :%s%s", | |
892 | me.id, client_p->name, client_p->id, | |
893 | IsHidden(client_p) ? "(H) " : "", client_p->info); | |
894 | ||
ce4fa447 | 895 | if(!EmptyString(client_p->serv->fullcaps)) |
212380e3 AC |
896 | sendto_one(target_p, ":%s ENCAP * GCAP :%s", |
897 | client_p->id, client_p->serv->fullcaps); | |
898 | } | |
899 | else | |
900 | { | |
901 | sendto_one(target_p, ":%s SERVER %s 2 :%s%s", | |
902 | me.name, client_p->name, | |
903 | IsHidden(client_p) ? "(H) " : "", client_p->info); | |
904 | ||
ce4fa447 | 905 | if(!EmptyString(client_p->serv->fullcaps)) |
212380e3 AC |
906 | sendto_one(target_p, ":%s ENCAP * GCAP :%s", |
907 | client_p->name, client_p->serv->fullcaps); | |
908 | } | |
909 | } | |
910 | ||
911 | /* | |
912 | ** Pass on my client information to the new server | |
913 | ** | |
914 | ** First, pass only servers (idea is that if the link gets | |
915 | ** cancelled beacause the server was already there, | |
916 | ** there are no NICK's to be cancelled...). Of course, | |
917 | ** if cancellation occurs, all this info is sent anyway, | |
918 | ** and I guess the link dies when a read is attempted...? --msa | |
55abcbb2 | 919 | ** |
212380e3 AC |
920 | ** Note: Link cancellation to occur at this point means |
921 | ** that at least two servers from my fragment are building | |
922 | ** up connection this other fragment at the same time, it's | |
923 | ** a race condition, not the normal way of operation... | |
924 | ** | |
925 | ** ALSO NOTE: using the get_client_name for server names-- | |
926 | ** see previous *WARNING*!!! (Also, original inpath | |
927 | ** is destroyed...) | |
928 | */ | |
5cefa1d6 | 929 | RB_DLINK_FOREACH(ptr, global_serv_list.head) |
212380e3 AC |
930 | { |
931 | target_p = ptr->data; | |
932 | ||
933 | /* target_p->from == target_p for target_p == client_p */ | |
934 | if(IsMe(target_p) || target_p->from == client_p) | |
935 | continue; | |
936 | ||
937 | /* presumption, if target has an id, so does its uplink */ | |
938 | if(has_id(client_p) && has_id(target_p)) | |
939 | sendto_one(client_p, ":%s SID %s %d %s :%s%s", | |
66c8fdd2 | 940 | target_p->servptr->id, target_p->name, |
212380e3 AC |
941 | target_p->hopcount + 1, target_p->id, |
942 | IsHidden(target_p) ? "(H) " : "", target_p->info); | |
943 | else | |
944 | sendto_one(client_p, ":%s SERVER %s %d :%s%s", | |
66c8fdd2 | 945 | target_p->servptr->name, |
212380e3 AC |
946 | target_p->name, target_p->hopcount + 1, |
947 | IsHidden(target_p) ? "(H) " : "", target_p->info); | |
948 | ||
ce4fa447 | 949 | if(!EmptyString(target_p->serv->fullcaps)) |
212380e3 AC |
950 | sendto_one(client_p, ":%s ENCAP * GCAP :%s", |
951 | get_id(target_p, client_p), | |
952 | target_p->serv->fullcaps); | |
953 | } | |
954 | ||
431a1a27 JT |
955 | if(IsCapable(client_p, CAP_BAN)) |
956 | burst_ban(client_p); | |
957 | ||
7bb8c655 | 958 | burst_TS6(client_p); |
212380e3 AC |
959 | |
960 | /* Always send a PING after connect burst is done */ | |
961 | sendto_one(client_p, "PING :%s", get_id(&me, client_p)); | |
962 | ||
963 | free_pre_client(client_p); | |
964 | ||
0bd120ed | 965 | send_pop_queue(client_p); |
212380e3 AC |
966 | |
967 | return 0; | |
212380e3 AC |
968 | } |
969 | ||
970 | /* | |
971 | * New server connection code | |
972 | * Based upon the stuff floating about in s_bsd.c | |
973 | * -- adrian | |
974 | */ | |
975 | ||
976 | /* | |
977 | * serv_connect() - initiate a server connection | |
978 | * | |
5203cba5 | 979 | * inputs - pointer to conf |
212380e3 AC |
980 | * - pointer to client doing the connet |
981 | * output - | |
982 | * side effects - | |
983 | * | |
984 | * This code initiates a connection to a server. It first checks to make | |
985 | * sure the given server exists. If this is the case, it creates a socket, | |
986 | * creates a client, saves the socket information in the client, and | |
b2f0da88 | 987 | * initiates a connection to the server through rb_connect_tcp(). The |
212380e3 AC |
988 | * completion of this goes through serv_completed_connection(). |
989 | * | |
990 | * We return 1 if the connection is attempted, since we don't know whether | |
991 | * it suceeded or not, and 0 if it fails in here somewhere. | |
992 | */ | |
993 | int | |
994 | serv_connect(struct server_conf *server_p, struct Client *by) | |
995 | { | |
996 | struct Client *client_p; | |
1d02144f | 997 | struct rb_sockaddr_storage myipnum; |
6c528b8e | 998 | char note[HOSTLEN + 10]; |
1d02144f | 999 | rb_fde_t *F; |
212380e3 AC |
1000 | |
1001 | s_assert(server_p != NULL); | |
1002 | if(server_p == NULL) | |
1003 | return 0; | |
1004 | ||
1d02144f AC |
1005 | /* log */ |
1006 | rb_inet_ntop_sock((struct sockaddr *)&server_p->my_ipnum, buf, sizeof(buf)); | |
1007 | ilog(L_SERVER, "Connect to *[%s] @%s", server_p->name, buf); | |
1008 | ||
212380e3 AC |
1009 | /* |
1010 | * Make sure this server isn't already connected | |
1011 | */ | |
1012 | if((client_p = find_server(NULL, server_p->name))) | |
1013 | { | |
1014 | sendto_realops_snomask(SNO_GENERAL, L_ALL, | |
1015 | "Server %s already present from %s", | |
b3ebc7ab | 1016 | server_p->name, client_p->name); |
212380e3 AC |
1017 | if(by && IsPerson(by) && !MyClient(by)) |
1018 | sendto_one_notice(by, ":Server %s already present from %s", | |
b3ebc7ab | 1019 | server_p->name, client_p->name); |
212380e3 AC |
1020 | return 0; |
1021 | } | |
1022 | ||
1023 | /* create a socket for the server connection */ | |
1d02144f | 1024 | if((F = rb_socket(GET_SS_FAMILY(&server_p->my_ipnum), SOCK_STREAM, 0, NULL)) == NULL) |
212380e3 | 1025 | { |
825ddf13 | 1026 | ilog_error("opening a stream socket"); |
212380e3 AC |
1027 | return 0; |
1028 | } | |
1029 | ||
1d02144f | 1030 | /* servernames are always guaranteed under HOSTLEN chars */ |
5203cba5 | 1031 | snprintf(note, sizeof(note), "Server: %s", server_p->name); |
6c528b8e | 1032 | rb_note(F, note); |
212380e3 AC |
1033 | |
1034 | /* Create a local client */ | |
1035 | client_p = make_client(NULL); | |
1036 | ||
1d02144f | 1037 | /* Copy in the server, hostname, fd */ |
f427c8b0 VY |
1038 | rb_strlcpy(client_p->name, server_p->name, sizeof(client_p->name)); |
1039 | rb_strlcpy(client_p->host, server_p->host, sizeof(client_p->host)); | |
1d02144f | 1040 | rb_strlcpy(client_p->sockhost, buf, sizeof(client_p->sockhost)); |
6c528b8e | 1041 | client_p->localClient->F = F; |
b5b4a0e7 | 1042 | add_to_cli_connid_hash(client_p); |
1d02144f AC |
1043 | /* shove the port number into the sockaddr */ |
1044 | #ifdef RB_IPV6 | |
1045 | if(GET_SS_FAMILY(&server_p->my_ipnum) == AF_INET6) | |
1046 | ((struct sockaddr_in6 *)&server_p->my_ipnum)->sin6_port = htons(server_p->port); | |
1047 | else | |
1048 | #endif | |
1049 | ((struct sockaddr_in *)&server_p->my_ipnum)->sin_port = htons(server_p->port); | |
212380e3 AC |
1050 | |
1051 | /* | |
1052 | * Set up the initial server evilness, ripped straight from | |
1053 | * connect_server(), so don't blame me for it being evil. | |
1054 | * -- adrian | |
1055 | */ | |
1056 | ||
6c528b8e | 1057 | if(!rb_set_buffers(client_p->localClient->F, READBUF_SIZE)) |
212380e3 | 1058 | { |
825ddf13 | 1059 | ilog_error("setting the buffer size for a server connection"); |
212380e3 AC |
1060 | } |
1061 | ||
1062 | /* | |
1063 | * Attach config entries to client here rather than in | |
1064 | * serv_connect_callback(). This to avoid null pointer references. | |
1065 | */ | |
1066 | attach_server_conf(client_p, server_p); | |
1067 | ||
1068 | /* | |
1069 | * at this point we have a connection in progress and C/N lines | |
1070 | * attached to the client, the socket info should be saved in the | |
1071 | * client and it should either be resolved or have a valid address. | |
1072 | * | |
1073 | * The socket has been connected or connect is in progress. | |
1074 | */ | |
1075 | make_server(client_p); | |
1d02144f AC |
1076 | if(by && IsClient(by)) |
1077 | strcpy(client_p->serv->by, by->name); | |
212380e3 | 1078 | else |
1d02144f AC |
1079 | strcpy(client_p->serv->by, "AutoConn."); |
1080 | ||
212380e3 | 1081 | SetConnecting(client_p); |
330fc5c1 | 1082 | rb_dlinkAddTail(client_p, &client_p->node, &global_client_list); |
212380e3 | 1083 | |
1d02144f | 1084 | if(ServerConfVhosted(server_p)) |
212380e3 | 1085 | { |
1d02144f AC |
1086 | memcpy(&myipnum, &server_p->my_ipnum, sizeof(myipnum)); |
1087 | ((struct sockaddr_in *)&myipnum)->sin_port = 0; | |
1088 | SET_SS_FAMILY(&myipnum, GET_SS_FAMILY(&server_p->my_ipnum)); | |
abe5dd20 | 1089 | |
abe5dd20 | 1090 | } |
1d02144f | 1091 | else if(GET_SS_FAMILY(&server_p->my_ipnum) == AF_INET && ServerInfo.specific_ipv4_vhost) |
212380e3 | 1092 | { |
1d02144f AC |
1093 | memcpy(&myipnum, &ServerInfo.ip, sizeof(myipnum)); |
1094 | ((struct sockaddr_in *)&myipnum)->sin_port = 0; | |
1095 | SET_SS_FAMILY(&myipnum, AF_INET); | |
1096 | SET_SS_LEN(&myipnum, sizeof(struct sockaddr_in)); | |
1097 | } | |
17648928 | 1098 | |
ccda6e3f | 1099 | #ifdef RB_IPV6 |
1d02144f AC |
1100 | else if((GET_SS_FAMILY(&server_p->my_ipnum) == AF_INET6) && ServerInfo.specific_ipv6_vhost) |
1101 | { | |
1102 | memcpy(&myipnum, &ServerInfo.ip6, sizeof(myipnum)); | |
1103 | ((struct sockaddr_in6 *)&myipnum)->sin6_port = 0; | |
1104 | SET_SS_FAMILY(&myipnum, AF_INET6); | |
1105 | SET_SS_LEN(&myipnum, sizeof(struct sockaddr_in6)); | |
1106 | } | |
17648928 | 1107 | #endif |
1d02144f AC |
1108 | else |
1109 | { | |
1110 | if(ServerConfSSL(server_p)) | |
1111 | { | |
1112 | rb_connect_tcp(client_p->localClient->F, | |
1113 | (struct sockaddr *)&server_p->my_ipnum, NULL, 0, | |
1114 | serv_connect_ssl_callback, client_p, | |
1115 | ConfigFileEntry.connect_timeout); | |
1116 | } | |
1117 | else | |
1118 | rb_connect_tcp(client_p->localClient->F, | |
1119 | (struct sockaddr *)&server_p->my_ipnum, NULL, 0, | |
1120 | serv_connect_callback, client_p, | |
1121 | ConfigFileEntry.connect_timeout); | |
1122 | ||
abe5dd20 JT |
1123 | return 1; |
1124 | } | |
1d02144f AC |
1125 | if(ServerConfSSL(server_p)) |
1126 | rb_connect_tcp(client_p->localClient->F, (struct sockaddr *)&server_p->my_ipnum, | |
1127 | (struct sockaddr *)&myipnum, | |
1128 | GET_SS_LEN(&myipnum), serv_connect_ssl_callback, client_p, | |
1129 | ConfigFileEntry.connect_timeout); | |
1130 | else | |
1131 | rb_connect_tcp(client_p->localClient->F, (struct sockaddr *)&server_p->my_ipnum, | |
1132 | (struct sockaddr *)&myipnum, | |
1133 | GET_SS_LEN(&myipnum), serv_connect_callback, client_p, | |
1134 | ConfigFileEntry.connect_timeout); | |
1135 | ||
1136 | return 1; | |
212380e3 AC |
1137 | } |
1138 | ||
f4a759c5 VY |
1139 | static void |
1140 | serv_connect_ssl_callback(rb_fde_t *F, int status, void *data) | |
1141 | { | |
1142 | struct Client *client_p = data; | |
1143 | rb_fde_t *xF[2]; | |
9ec51326 | 1144 | rb_connect_sockaddr(F, (struct sockaddr *)&client_p->localClient->ip, sizeof(client_p->localClient->ip)); |
f4a759c5 VY |
1145 | if(status != RB_OK) |
1146 | { | |
9ec51326 JT |
1147 | /* Print error message, just like non-SSL. */ |
1148 | serv_connect_callback(F, status, data); | |
f4a759c5 VY |
1149 | return; |
1150 | } | |
eda22d87 JT |
1151 | if(rb_socketpair(AF_UNIX, SOCK_STREAM, 0, &xF[0], &xF[1], "Outgoing ssld connection") == -1) |
1152 | { | |
1153 | ilog_error("rb_socketpair failed for server"); | |
1154 | serv_connect_callback(F, RB_ERROR, data); | |
1155 | return; | |
55abcbb2 | 1156 | |
eda22d87 | 1157 | } |
b5b4a0e7 | 1158 | del_from_cli_connid_hash(client_p); |
f4a759c5 | 1159 | client_p->localClient->F = xF[0]; |
b5b4a0e7 | 1160 | add_to_cli_connid_hash(client_p); |
f4a759c5 VY |
1161 | |
1162 | client_p->localClient->ssl_ctl = start_ssld_connect(F, xF[1], rb_get_fd(xF[0])); | |
5e270e7d SA |
1163 | if(!client_p->localClient->ssl_ctl) |
1164 | { | |
1165 | serv_connect_callback(client_p->localClient->F, RB_ERROR, data); | |
1166 | return; | |
1167 | } | |
f4a759c5 | 1168 | SetSSL(client_p); |
39452169 | 1169 | serv_connect_callback(client_p->localClient->F, RB_OK, client_p); |
c6d72037 VY |
1170 | } |
1171 | ||
212380e3 AC |
1172 | /* |
1173 | * serv_connect_callback() - complete a server connection. | |
55abcbb2 | 1174 | * |
212380e3 AC |
1175 | * This routine is called after the server connection attempt has |
1176 | * completed. If unsucessful, an error is sent to ops and the client | |
1177 | * is closed. If sucessful, it goes through the initialisation/check | |
1178 | * procedures, the capabilities are sent, and the socket is then | |
1179 | * marked for reading. | |
1180 | */ | |
1181 | static void | |
6c528b8e | 1182 | serv_connect_callback(rb_fde_t *F, int status, void *data) |
212380e3 AC |
1183 | { |
1184 | struct Client *client_p = data; | |
1185 | struct server_conf *server_p; | |
1186 | char *errstr; | |
1187 | ||
1188 | /* First, make sure its a real client! */ | |
1189 | s_assert(client_p != NULL); | |
6c528b8e | 1190 | s_assert(client_p->localClient->F == F); |
212380e3 AC |
1191 | |
1192 | if(client_p == NULL) | |
1193 | return; | |
1194 | ||
1195 | /* while we were waiting for the callback, its possible this already | |
1196 | * linked in.. --fl | |
1197 | */ | |
1198 | if(find_server(NULL, client_p->name) != NULL) | |
1199 | { | |
1200 | exit_client(client_p, client_p, &me, "Server Exists"); | |
1201 | return; | |
1202 | } | |
1203 | ||
f4a759c5 | 1204 | if(client_p->localClient->ssl_ctl == NULL) |
c6d72037 VY |
1205 | rb_connect_sockaddr(F, (struct sockaddr *)&client_p->localClient->ip, sizeof(client_p->localClient->ip)); |
1206 | ||
212380e3 | 1207 | /* Check the status */ |
6c528b8e | 1208 | if(status != RB_OK) |
212380e3 AC |
1209 | { |
1210 | /* COMM_ERR_TIMEOUT wont have an errno associated with it, | |
1211 | * the others will.. --fl | |
1212 | */ | |
6c528b8e | 1213 | if(status == RB_ERR_TIMEOUT) |
212380e3 AC |
1214 | { |
1215 | sendto_realops_snomask(SNO_GENERAL, is_remote_connect(client_p) ? L_NETWIDE : L_ALL, | |
1216 | "Error connecting to %s[%s]: %s", | |
55abcbb2 | 1217 | client_p->name, |
212380e3 | 1218 | "255.255.255.255", |
b2f0da88 | 1219 | rb_errstr(status)); |
212380e3 AC |
1220 | ilog(L_SERVER, "Error connecting to %s[%s]: %s", |
1221 | client_p->name, client_p->sockhost, | |
b2f0da88 | 1222 | rb_errstr(status)); |
212380e3 AC |
1223 | } |
1224 | else | |
1225 | { | |
6c528b8e | 1226 | errstr = strerror(rb_get_sockerr(F)); |
212380e3 AC |
1227 | sendto_realops_snomask(SNO_GENERAL, is_remote_connect(client_p) ? L_NETWIDE : L_ALL, |
1228 | "Error connecting to %s[%s]: %s (%s)", | |
1229 | client_p->name, | |
212380e3 | 1230 | "255.255.255.255", |
b2f0da88 | 1231 | rb_errstr(status), errstr); |
212380e3 AC |
1232 | ilog(L_SERVER, "Error connecting to %s[%s]: %s (%s)", |
1233 | client_p->name, client_p->sockhost, | |
b2f0da88 | 1234 | rb_errstr(status), errstr); |
212380e3 AC |
1235 | } |
1236 | ||
b2f0da88 | 1237 | exit_client(client_p, client_p, &me, rb_errstr(status)); |
212380e3 AC |
1238 | return; |
1239 | } | |
1240 | ||
1241 | /* COMM_OK, so continue the connection procedure */ | |
1242 | /* Get the C/N lines */ | |
1243 | if((server_p = client_p->localClient->att_sconf) == NULL) | |
1244 | { | |
1245 | sendto_realops_snomask(SNO_GENERAL, is_remote_connect(client_p) ? L_NETWIDE : L_ALL, "Lost connect{} block for %s", | |
b3ebc7ab | 1246 | client_p->name); |
212380e3 AC |
1247 | exit_client(client_p, client_p, &me, "Lost connect{} block"); |
1248 | return; | |
1249 | } | |
1250 | ||
1251 | /* Next, send the initial handshake */ | |
1252 | SetHandshake(client_p); | |
1253 | ||
ff0cc1e6 | 1254 | /* the server may be linking based on certificate fingerprint now. --nenolod */ |
55abcbb2 | 1255 | sendto_one(client_p, "PASS %s TS %d :%s", |
ff0cc1e6 | 1256 | EmptyString(server_p->spasswd) ? "*" : server_p->spasswd, TS_CURRENT, me.id); |
212380e3 AC |
1257 | |
1258 | /* pass my info to the new server */ | |
1259 | send_capabilities(client_p, default_server_capabs | |
1260 | | (ServerConfCompressed(server_p) ? CAP_ZIP_SUPPORTED : 0) | |
1261 | | (ServerConfTb(server_p) ? CAP_TB : 0)); | |
1262 | ||
1263 | sendto_one(client_p, "SERVER %s 1 :%s%s", | |
1264 | me.name, | |
1265 | ConfigServerHide.hidden ? "(H) " : "", me.info); | |
1266 | ||
55abcbb2 | 1267 | /* |
212380e3 AC |
1268 | * If we've been marked dead because a send failed, just exit |
1269 | * here now and save everyone the trouble of us ever existing. | |
1270 | */ | |
1271 | if(IsAnyDead(client_p)) | |
1272 | { | |
1273 | sendto_realops_snomask(SNO_GENERAL, is_remote_connect(client_p) ? L_NETWIDE : L_ALL, | |
1274 | "%s went dead during handshake", client_p->name); | |
1275 | exit_client(client_p, client_p, &me, "Went dead during handshake"); | |
1276 | return; | |
1277 | } | |
1278 | ||
1279 | /* don't move to serv_list yet -- we haven't sent a burst! */ | |
1280 | ||
1281 | /* If we get here, we're ok, so lets start reading some data */ | |
6c528b8e | 1282 | read_packet(F, client_p); |
212380e3 | 1283 | } |