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212380e3 | 1 | /* |
2 | * ircd-ratbox: A slightly useful ircd. | |
3 | * s_serv.c: Server related functions. | |
4 | * | |
5 | * Copyright (C) 1990 Jarkko Oikarinen and University of Oulu, Co Center | |
6 | * Copyright (C) 1996-2002 Hybrid Development Team | |
7 | * Copyright (C) 2002-2005 ircd-ratbox development team | |
8 | * | |
9 | * This program is free software; you can redistribute it and/or modify | |
10 | * it under the terms of the GNU General Public License as published by | |
11 | * the Free Software Foundation; either version 2 of the License, or | |
12 | * (at your option) any later version. | |
13 | * | |
14 | * This program is distributed in the hope that it will be useful, | |
15 | * but WITHOUT ANY WARRANTY; without even the implied warranty of | |
16 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | |
17 | * GNU General Public License for more details. | |
18 | * | |
19 | * You should have received a copy of the GNU General Public License | |
20 | * along with this program; if not, write to the Free Software | |
21 | * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 | |
22 | * USA | |
23 | * | |
cda8e9b8 | 24 | * $Id: s_serv.c 3550 2007-08-09 06:47:26Z nenolod $ |
212380e3 | 25 | */ |
26 | ||
27 | #include "stdinc.h" | |
28 | ||
29 | #ifdef HAVE_LIBCRYPTO | |
30 | #include <openssl/rsa.h> | |
31 | #endif | |
32 | ||
212380e3 | 33 | #include "s_serv.h" |
34 | #include "class.h" | |
35 | #include "client.h" | |
36 | #include "common.h" | |
212380e3 | 37 | #include "hash.h" |
13ae2f4b | 38 | #include "match.h" |
212380e3 | 39 | #include "ircd.h" |
40 | #include "ircd_defs.h" | |
41 | #include "numeric.h" | |
42 | #include "packet.h" | |
43 | #include "res.h" | |
212380e3 | 44 | #include "s_conf.h" |
45 | #include "s_newconf.h" | |
d3455e2c | 46 | #include "logger.h" |
212380e3 | 47 | #include "s_stats.h" |
48 | #include "s_user.h" | |
49 | #include "scache.h" | |
50 | #include "send.h" | |
51 | #include "client.h" | |
212380e3 | 52 | #include "channel.h" /* chcap_usage_counts stuff... */ |
53 | #include "hook.h" | |
54 | #include "msg.h" | |
54015b5f | 55 | #include "reject.h" |
8db00894 | 56 | #include "sslproc.h" |
fb87421d | 57 | #include "irc_dictionary.h" |
212380e3 | 58 | |
212380e3 | 59 | #ifndef INADDR_NONE |
60 | #define INADDR_NONE ((unsigned int) 0xffffffff) | |
61 | #endif | |
62 | ||
212380e3 | 63 | int MaxConnectionCount = 1; |
64 | int MaxClientCount = 1; | |
65 | int refresh_user_links = 0; | |
66 | ||
67 | static char buf[BUFSIZE]; | |
68 | ||
212380e3 | 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 | */ | |
74 | struct Capability captab[] = { | |
75 | /* name cap */ | |
76 | { "QS", CAP_QS }, | |
77 | { "EX", CAP_EX }, | |
78 | { "CHW", CAP_CHW}, | |
79 | { "IE", CAP_IE}, | |
80 | { "KLN", CAP_KLN}, | |
212380e3 | 81 | { "KNOCK", CAP_KNOCK}, |
82 | { "ZIP", CAP_ZIP}, | |
83 | { "TB", CAP_TB}, | |
84 | { "UNKLN", CAP_UNKLN}, | |
85 | { "CLUSTER", CAP_CLUSTER}, | |
86 | { "ENCAP", CAP_ENCAP }, | |
87 | { "SERVICES", CAP_SERVICE }, | |
88 | { "RSFNC", CAP_RSFNC }, | |
89 | { "SAVE", CAP_SAVE }, | |
90 | { "EUID", CAP_EUID }, | |
6ce8910d | 91 | { "EOPMOD", CAP_EOPMOD }, |
212380e3 | 92 | {0, 0} |
93 | }; | |
94 | ||
212380e3 | 95 | static CNCB serv_connect_callback; |
8db00894 | 96 | static CNCB serv_connect_ssl_callback; |
212380e3 | 97 | |
98 | /* | |
99 | * hunt_server - Do the basic thing in delivering the message (command) | |
100 | * across the relays to the specific server (server) for | |
101 | * actions. | |
102 | * | |
103 | * Note: The command is a format string and *MUST* be | |
104 | * of prefixed style (e.g. ":%s COMMAND %s ..."). | |
105 | * Command can have only max 8 parameters. | |
106 | * | |
107 | * server parv[server] is the parameter identifying the | |
108 | * target server. | |
109 | * | |
110 | * *WARNING* | |
111 | * parv[server] is replaced with the pointer to the | |
112 | * real servername from the matched client (I'm lazy | |
113 | * now --msa). | |
114 | * | |
115 | * returns: (see #defines) | |
116 | */ | |
117 | int | |
118 | hunt_server(struct Client *client_p, struct Client *source_p, | |
119 | const char *command, int server, int parc, const char *parv[]) | |
120 | { | |
121 | struct Client *target_p; | |
122 | int wilds; | |
af81d5a0 | 123 | rb_dlink_node *ptr; |
212380e3 | 124 | const char *old; |
125 | char *new; | |
126 | ||
127 | /* | |
128 | * Assume it's me, if no server | |
129 | */ | |
130 | if(parc <= server || EmptyString(parv[server]) || | |
4d7a1ee5 | 131 | match(parv[server], me.name) || (strcmp(parv[server], me.id) == 0)) |
212380e3 | 132 | return (HUNTED_ISME); |
133 | ||
134 | new = LOCAL_COPY(parv[server]); | |
135 | ||
136 | /* | |
137 | * These are to pickup matches that would cause the following | |
138 | * message to go in the wrong direction while doing quick fast | |
139 | * non-matching lookups. | |
140 | */ | |
141 | if(MyClient(source_p)) | |
142 | target_p = find_named_client(new); | |
143 | else | |
144 | target_p = find_client(new); | |
145 | ||
146 | if(target_p) | |
147 | if(target_p->from == source_p->from && !MyConnect(target_p)) | |
148 | target_p = NULL; | |
149 | ||
212380e3 | 150 | collapse(new); |
151 | wilds = (strchr(new, '?') || strchr(new, '*')); | |
152 | ||
153 | /* | |
154 | * Again, if there are no wild cards involved in the server | |
155 | * name, use the hash lookup | |
156 | */ | |
f8283571 | 157 | if(!target_p && wilds) |
212380e3 | 158 | { |
f8283571 | 159 | RB_DLINK_FOREACH(ptr, global_client_list.head) |
212380e3 | 160 | { |
f8283571 | 161 | if(match(new, ((struct Client *) (ptr->data))->name)) |
212380e3 | 162 | { |
f8283571 JT |
163 | target_p = ptr->data; |
164 | break; | |
212380e3 | 165 | } |
166 | } | |
167 | } | |
168 | ||
f8283571 JT |
169 | if(target_p && !IsRegistered(target_p)) |
170 | target_p = NULL; | |
171 | ||
212380e3 | 172 | if(target_p) |
173 | { | |
212380e3 | 174 | if(IsMe(target_p) || MyClient(target_p)) |
175 | return HUNTED_ISME; | |
176 | ||
177 | old = parv[server]; | |
178 | parv[server] = get_id(target_p, target_p); | |
179 | ||
180 | sendto_one(target_p, command, get_id(source_p, target_p), | |
181 | parv[1], parv[2], parv[3], parv[4], parv[5], parv[6], parv[7], parv[8]); | |
182 | parv[server] = old; | |
183 | return (HUNTED_PASS); | |
184 | } | |
185 | ||
95d36ef5 | 186 | if(MyClient(source_p) || !IsDigit(parv[server][0])) |
212380e3 | 187 | sendto_one_numeric(source_p, ERR_NOSUCHSERVER, |
188 | form_str(ERR_NOSUCHSERVER), parv[server]); | |
189 | return (HUNTED_NOSUCH); | |
190 | } | |
191 | ||
192 | /* | |
193 | * try_connections - scan through configuration and try new connections. | |
194 | * Returns the calendar time when the next call to this | |
195 | * function should be made latest. (No harm done if this | |
196 | * is called earlier or later...) | |
197 | */ | |
198 | void | |
199 | try_connections(void *unused) | |
200 | { | |
201 | struct Client *client_p; | |
202 | struct server_conf *server_p = NULL; | |
203 | struct server_conf *tmp_p; | |
204 | struct Class *cltmp; | |
af81d5a0 | 205 | rb_dlink_node *ptr; |
212380e3 | 206 | int connecting = FALSE; |
207 | int confrq = 0; | |
208 | time_t next = 0; | |
209 | ||
8e69bb4e | 210 | RB_DLINK_FOREACH(ptr, server_conf_list.head) |
212380e3 | 211 | { |
212 | tmp_p = ptr->data; | |
213 | ||
214 | if(ServerConfIllegal(tmp_p) || !ServerConfAutoconn(tmp_p)) | |
215 | continue; | |
216 | ||
e30b893e VY |
217 | /* don't allow ssl connections if ssl isn't setup */ |
218 | if(ServerConfSSL(tmp_p) && (!ssl_ok || !get_ssld_count())) | |
8db00894 VY |
219 | continue; |
220 | ||
212380e3 | 221 | cltmp = tmp_p->class; |
222 | ||
223 | /* | |
224 | * Skip this entry if the use of it is still on hold until | |
225 | * future. Otherwise handle this entry (and set it on hold | |
226 | * until next time). Will reset only hold times, if already | |
227 | * made one successfull connection... [this algorithm is | |
228 | * a bit fuzzy... -- msa >;) ] | |
229 | */ | |
9f6bbe3c | 230 | if(tmp_p->hold > rb_current_time()) |
212380e3 | 231 | { |
232 | if(next > tmp_p->hold || next == 0) | |
233 | next = tmp_p->hold; | |
234 | continue; | |
235 | } | |
236 | ||
237 | confrq = get_con_freq(cltmp); | |
9f6bbe3c | 238 | tmp_p->hold = rb_current_time() + confrq; |
212380e3 | 239 | |
240 | /* | |
241 | * Found a CONNECT config with port specified, scan clients | |
242 | * and see if this server is already connected? | |
243 | */ | |
244 | client_p = find_server(NULL, tmp_p->name); | |
245 | ||
246 | if(!client_p && (CurrUsers(cltmp) < MaxUsers(cltmp)) && !connecting) | |
247 | { | |
248 | server_p = tmp_p; | |
249 | ||
250 | /* We connect only one at time... */ | |
251 | connecting = TRUE; | |
252 | } | |
253 | ||
254 | if((next > tmp_p->hold) || (next == 0)) | |
255 | next = tmp_p->hold; | |
256 | } | |
257 | ||
258 | /* TODO: change this to set active flag to 0 when added to event! --Habeeb */ | |
259 | if(GlobalSetOptions.autoconn == 0) | |
260 | return; | |
261 | ||
262 | if(!connecting) | |
263 | return; | |
264 | ||
265 | /* move this connect entry to end.. */ | |
af81d5a0 WP |
266 | rb_dlinkDelete(&server_p->node, &server_conf_list); |
267 | rb_dlinkAddTail(server_p, &server_p->node, &server_conf_list); | |
212380e3 | 268 | |
269 | /* | |
270 | * We used to only print this if serv_connect() actually | |
38e6acdd | 271 | * suceeded, but since rb_tcp_connect() can call the callback |
212380e3 | 272 | * immediately if there is an error, we were getting error messages |
273 | * in the wrong order. SO, we just print out the activated line, | |
274 | * and let serv_connect() / serv_connect_callback() print an | |
275 | * error afterwards if it fails. | |
276 | * -- adrian | |
277 | */ | |
212380e3 | 278 | sendto_realops_snomask(SNO_GENERAL, L_ALL, |
279 | "Connection to %s activated", | |
280 | server_p->name); | |
212380e3 | 281 | |
282 | serv_connect(server_p, 0); | |
283 | } | |
284 | ||
285 | int | |
286 | check_server(const char *name, struct Client *client_p) | |
287 | { | |
288 | struct server_conf *server_p = NULL; | |
289 | struct server_conf *tmp_p; | |
af81d5a0 | 290 | rb_dlink_node *ptr; |
212380e3 | 291 | int error = -1; |
292 | ||
293 | s_assert(NULL != client_p); | |
294 | if(client_p == NULL) | |
295 | return error; | |
296 | ||
297 | if(!(client_p->localClient->passwd)) | |
298 | return -2; | |
299 | ||
300 | if(strlen(name) > HOSTLEN) | |
301 | return -4; | |
302 | ||
8e69bb4e | 303 | RB_DLINK_FOREACH(ptr, server_conf_list.head) |
212380e3 | 304 | { |
305 | tmp_p = ptr->data; | |
306 | ||
307 | if(ServerConfIllegal(tmp_p)) | |
308 | continue; | |
309 | ||
310 | if(!match(tmp_p->name, name)) | |
311 | continue; | |
312 | ||
313 | error = -3; | |
314 | ||
315 | /* XXX: Fix me for IPv6 */ | |
316 | /* XXX sockhost is the IPv4 ip as a string */ | |
317 | if(match(tmp_p->host, client_p->host) || | |
318 | match(tmp_p->host, client_p->sockhost)) | |
319 | { | |
320 | error = -2; | |
321 | ||
322 | if(ServerConfEncrypted(tmp_p)) | |
323 | { | |
cd1dea97 | 324 | if(!strcmp(tmp_p->passwd, rb_crypt(client_p->localClient->passwd, |
212380e3 | 325 | tmp_p->passwd))) |
326 | { | |
327 | server_p = tmp_p; | |
328 | break; | |
329 | } | |
330 | } | |
331 | else if(!strcmp(tmp_p->passwd, client_p->localClient->passwd)) | |
332 | { | |
333 | server_p = tmp_p; | |
334 | break; | |
335 | } | |
336 | } | |
337 | } | |
338 | ||
339 | if(server_p == NULL) | |
340 | return error; | |
341 | ||
e30b893e VY |
342 | if(ServerConfSSL(server_p) && client_p->localClient->ssl_ctl == NULL) |
343 | { | |
344 | return -5; | |
8db00894 VY |
345 | } |
346 | ||
212380e3 | 347 | attach_server_conf(client_p, server_p); |
348 | ||
349 | /* clear ZIP/TB if they support but we dont want them */ | |
350 | #ifdef HAVE_LIBZ | |
351 | if(!ServerConfCompressed(server_p)) | |
352 | #endif | |
353 | ClearCap(client_p, CAP_ZIP); | |
354 | ||
355 | if(!ServerConfTb(server_p)) | |
356 | ClearCap(client_p, CAP_TB); | |
357 | ||
358 | return 0; | |
359 | } | |
360 | ||
361 | /* | |
362 | * send_capabilities | |
363 | * | |
364 | * inputs - Client pointer to send to | |
365 | * - int flag of capabilities that this server has | |
366 | * output - NONE | |
367 | * side effects - send the CAPAB line to a server -orabidoo | |
368 | * | |
369 | */ | |
370 | void | |
371 | send_capabilities(struct Client *client_p, int cap_can_send) | |
372 | { | |
373 | struct Capability *cap; | |
374 | char msgbuf[BUFSIZE]; | |
375 | char *t; | |
376 | int tl; | |
377 | ||
378 | t = msgbuf; | |
379 | ||
380 | for (cap = captab; cap->name; ++cap) | |
381 | { | |
382 | if(cap->cap & cap_can_send) | |
383 | { | |
38e6acdd | 384 | tl = rb_sprintf(t, "%s ", cap->name); |
212380e3 | 385 | t += tl; |
386 | } | |
387 | } | |
388 | ||
389 | t--; | |
390 | *t = '\0'; | |
391 | ||
392 | sendto_one(client_p, "CAPAB :%s", msgbuf); | |
393 | } | |
394 | ||
212380e3 | 395 | /* burst_modes_TS6() |
396 | * | |
397 | * input - client to burst to, channel name, list to burst, mode flag | |
398 | * output - | |
399 | * side effects - client is sent a list of +b, +e, or +I modes | |
400 | */ | |
401 | static void | |
402 | burst_modes_TS6(struct Client *client_p, struct Channel *chptr, | |
af81d5a0 | 403 | rb_dlink_list *list, char flag) |
212380e3 | 404 | { |
af81d5a0 | 405 | rb_dlink_node *ptr; |
212380e3 | 406 | struct Ban *banptr; |
407 | char *t; | |
408 | int tlen; | |
409 | int mlen; | |
410 | int cur_len; | |
411 | ||
38e6acdd | 412 | cur_len = mlen = rb_sprintf(buf, ":%s BMASK %ld %s %c :", |
212380e3 | 413 | me.id, (long) chptr->channelts, chptr->chname, flag); |
414 | t = buf + mlen; | |
415 | ||
8e69bb4e | 416 | RB_DLINK_FOREACH(ptr, list->head) |
212380e3 | 417 | { |
418 | banptr = ptr->data; | |
419 | ||
420 | tlen = strlen(banptr->banstr) + 1; | |
421 | ||
422 | /* uh oh */ | |
423 | if(cur_len + tlen > BUFSIZE - 3) | |
424 | { | |
425 | /* the one we're trying to send doesnt fit at all! */ | |
426 | if(cur_len == mlen) | |
427 | { | |
428 | s_assert(0); | |
429 | continue; | |
430 | } | |
431 | ||
432 | /* chop off trailing space and send.. */ | |
433 | *(t-1) = '\0'; | |
434 | sendto_one(client_p, "%s", buf); | |
435 | cur_len = mlen; | |
436 | t = buf + mlen; | |
437 | } | |
438 | ||
38e6acdd | 439 | rb_sprintf(t, "%s ", banptr->banstr); |
212380e3 | 440 | t += tlen; |
441 | cur_len += tlen; | |
442 | } | |
443 | ||
444 | /* cant ever exit the loop above without having modified buf, | |
445 | * chop off trailing space and send. | |
446 | */ | |
447 | *(t-1) = '\0'; | |
448 | sendto_one(client_p, "%s", buf); | |
449 | } | |
450 | ||
212380e3 | 451 | /* |
452 | * burst_TS6 | |
453 | * | |
454 | * inputs - client (server) to send nick towards | |
455 | * - client to send nick for | |
456 | * output - NONE | |
457 | * side effects - NICK message is sent towards given client_p | |
458 | */ | |
459 | static void | |
460 | burst_TS6(struct Client *client_p) | |
461 | { | |
462 | static char ubuf[12]; | |
463 | struct Client *target_p; | |
464 | struct Channel *chptr; | |
465 | struct membership *msptr; | |
466 | hook_data_client hclientinfo; | |
467 | hook_data_channel hchaninfo; | |
af81d5a0 WP |
468 | rb_dlink_node *ptr; |
469 | rb_dlink_node *uptr; | |
212380e3 | 470 | char *t; |
471 | int tlen, mlen; | |
472 | int cur_len = 0; | |
fb87421d G |
473 | struct Metadata *md; |
474 | struct DictionaryIter iter; | |
212380e3 | 475 | |
476 | hclientinfo.client = hchaninfo.client = client_p; | |
477 | ||
8e69bb4e | 478 | RB_DLINK_FOREACH(ptr, global_client_list.head) |
212380e3 | 479 | { |
480 | target_p = ptr->data; | |
481 | ||
482 | if(!IsPerson(target_p)) | |
483 | continue; | |
484 | ||
485 | send_umode(NULL, target_p, 0, 0, ubuf); | |
486 | if(!*ubuf) | |
487 | { | |
488 | ubuf[0] = '+'; | |
489 | ubuf[1] = '\0'; | |
490 | } | |
491 | ||
6e749518 | 492 | if(IsCapable(client_p, CAP_EUID)) |
212380e3 | 493 | sendto_one(client_p, ":%s EUID %s %d %ld %s %s %s %s %s %s %s :%s", |
494 | target_p->servptr->id, target_p->name, | |
495 | target_p->hopcount + 1, | |
496 | (long) target_p->tsinfo, ubuf, | |
497 | target_p->username, target_p->host, | |
498 | IsIPSpoof(target_p) ? "0" : target_p->sockhost, | |
499 | target_p->id, | |
500 | IsDynSpoof(target_p) ? target_p->orighost : "*", | |
501 | EmptyString(target_p->user->suser) ? "*" : target_p->user->suser, | |
502 | target_p->info); | |
6e749518 | 503 | else |
212380e3 | 504 | sendto_one(client_p, ":%s UID %s %d %ld %s %s %s %s %s :%s", |
505 | target_p->servptr->id, target_p->name, | |
506 | target_p->hopcount + 1, | |
507 | (long) target_p->tsinfo, ubuf, | |
508 | target_p->username, target_p->host, | |
509 | IsIPSpoof(target_p) ? "0" : target_p->sockhost, | |
510 | target_p->id, target_p->info); | |
6e749518 | 511 | |
54656d76 JT |
512 | if(!EmptyString(target_p->certfp)) |
513 | sendto_one(client_p, ":%s ENCAP * CERTFP :%s", | |
514 | use_id(target_p), target_p->certfp); | |
515 | ||
6e749518 | 516 | if(!IsCapable(client_p, CAP_EUID)) |
212380e3 | 517 | { |
518 | if(IsDynSpoof(target_p)) | |
519 | sendto_one(client_p, ":%s ENCAP * REALHOST %s", | |
520 | use_id(target_p), target_p->orighost); | |
521 | if(!EmptyString(target_p->user->suser)) | |
522 | sendto_one(client_p, ":%s ENCAP * LOGIN %s", | |
523 | use_id(target_p), target_p->user->suser); | |
524 | } | |
525 | ||
fb87421d G |
526 | DICTIONARY_FOREACH(md, &iter, target_p->user->metadata) |
527 | { | |
6f659342 | 528 | sendto_one(client_p, ":%s ENCAP * METADATA ADD %s %s :%s", |
fb87421d G |
529 | use_id(target_p), use_id(target_p), md->name, md->value); |
530 | } | |
531 | ||
c387fc41 | 532 | if(ConfigFileEntry.burst_away && !EmptyString(target_p->user->away)) |
212380e3 | 533 | sendto_one(client_p, ":%s AWAY :%s", |
534 | use_id(target_p), | |
c387fc41 | 535 | target_p->user->away); |
212380e3 | 536 | |
537 | hclientinfo.target = target_p; | |
538 | call_hook(h_burst_client, &hclientinfo); | |
539 | } | |
540 | ||
8e69bb4e | 541 | RB_DLINK_FOREACH(ptr, global_channel_list.head) |
212380e3 | 542 | { |
543 | chptr = ptr->data; | |
544 | ||
545 | if(*chptr->chname != '#') | |
546 | continue; | |
547 | ||
38e6acdd | 548 | cur_len = mlen = rb_sprintf(buf, ":%s SJOIN %ld %s %s :", me.id, |
212380e3 | 549 | (long) chptr->channelts, chptr->chname, |
550 | channel_modes(chptr, client_p)); | |
551 | ||
552 | t = buf + mlen; | |
553 | ||
8e69bb4e | 554 | RB_DLINK_FOREACH(uptr, chptr->members.head) |
212380e3 | 555 | { |
556 | msptr = uptr->data; | |
557 | ||
558 | tlen = strlen(use_id(msptr->client_p)) + 1; | |
c63f7589 | 559 | if(is_owner(msptr)) |
fc5ba333 | 560 | tlen++; |
212380e3 | 561 | if(is_chanop(msptr)) |
562 | tlen++; | |
c63f7589 | 563 | if(is_halfop(msptr)) |
fc5ba333 | 564 | tlen++; |
212380e3 | 565 | if(is_voiced(msptr)) |
566 | tlen++; | |
567 | ||
568 | if(cur_len + tlen >= BUFSIZE - 3) | |
569 | { | |
570 | *(t-1) = '\0'; | |
571 | sendto_one(client_p, "%s", buf); | |
572 | cur_len = mlen; | |
573 | t = buf + mlen; | |
574 | } | |
575 | ||
38e6acdd | 576 | rb_sprintf(t, "%s%s ", find_channel_status(msptr, 1), |
212380e3 | 577 | use_id(msptr->client_p)); |
578 | ||
579 | cur_len += tlen; | |
580 | t += tlen; | |
581 | } | |
582 | ||
af81d5a0 | 583 | if (rb_dlink_list_length(&chptr->members) > 0) |
212380e3 | 584 | { |
585 | /* remove trailing space */ | |
586 | *(t-1) = '\0'; | |
587 | } | |
588 | sendto_one(client_p, "%s", buf); | |
589 | ||
0b370fcc | 590 | DICTIONARY_FOREACH(md, &iter, chptr->metadata) |
6f659342 | 591 | { |
104becbf G |
592 | /* don't bother bursting +J metadata */ |
593 | if(!(md->name[0] == 'K')) | |
8bced6dc | 594 | sendto_one(&me, ":%s ENCAP * METADATA ADD %s %s :%s", |
104becbf | 595 | use_id(target_p), use_id(target_p), md->name, md->value); |
6f659342 G |
596 | } |
597 | ||
af81d5a0 | 598 | if(rb_dlink_list_length(&chptr->banlist) > 0) |
212380e3 | 599 | burst_modes_TS6(client_p, chptr, &chptr->banlist, 'b'); |
600 | ||
601 | if(IsCapable(client_p, CAP_EX) && | |
af81d5a0 | 602 | rb_dlink_list_length(&chptr->exceptlist) > 0) |
212380e3 | 603 | burst_modes_TS6(client_p, chptr, &chptr->exceptlist, 'e'); |
604 | ||
605 | if(IsCapable(client_p, CAP_IE) && | |
af81d5a0 | 606 | rb_dlink_list_length(&chptr->invexlist) > 0) |
212380e3 | 607 | burst_modes_TS6(client_p, chptr, &chptr->invexlist, 'I'); |
608 | ||
af81d5a0 | 609 | if(rb_dlink_list_length(&chptr->quietlist) > 0) |
212380e3 | 610 | burst_modes_TS6(client_p, chptr, &chptr->quietlist, 'q'); |
611 | ||
612 | if(IsCapable(client_p, CAP_TB) && chptr->topic != NULL) | |
613 | sendto_one(client_p, ":%s TB %s %ld %s%s:%s", | |
614 | me.id, chptr->chname, (long) chptr->topic_time, | |
615 | ConfigChannel.burst_topicwho ? chptr->topic_info : "", | |
616 | ConfigChannel.burst_topicwho ? " " : "", | |
617 | chptr->topic); | |
618 | ||
619 | hchaninfo.chptr = chptr; | |
620 | call_hook(h_burst_channel, &hchaninfo); | |
621 | } | |
622 | ||
623 | hclientinfo.target = NULL; | |
624 | call_hook(h_burst_finished, &hclientinfo); | |
625 | } | |
626 | ||
627 | /* | |
628 | * show_capabilities - show current server capabilities | |
629 | * | |
630 | * inputs - pointer to an struct Client | |
631 | * output - pointer to static string | |
632 | * side effects - build up string representing capabilities of server listed | |
633 | */ | |
634 | const char * | |
635 | show_capabilities(struct Client *target_p) | |
636 | { | |
637 | static char msgbuf[BUFSIZE]; | |
638 | struct Capability *cap; | |
212380e3 | 639 | |
e30b893e VY |
640 | if(has_id(target_p)) |
641 | rb_strlcpy(msgbuf, " TS6", sizeof(msgbuf)); | |
e30b893e VY |
642 | |
643 | if(IsSSL(target_p)) | |
644 | rb_strlcat(msgbuf, " SSL", sizeof(msgbuf)); | |
212380e3 | 645 | |
646 | if(!IsServer(target_p) || !target_p->serv->caps) /* short circuit if no caps */ | |
e30b893e | 647 | return msgbuf + 1; |
212380e3 | 648 | |
649 | for (cap = captab; cap->cap; ++cap) | |
650 | { | |
651 | if(cap->cap & target_p->serv->caps) | |
e30b893e | 652 | rb_snprintf_append(msgbuf, sizeof(msgbuf), " %s", cap->name); |
212380e3 | 653 | } |
654 | ||
e30b893e | 655 | return msgbuf + 1; |
212380e3 | 656 | } |
657 | ||
658 | /* | |
659 | * server_estab | |
660 | * | |
661 | * inputs - pointer to a struct Client | |
662 | * output - | |
663 | * side effects - | |
664 | */ | |
665 | int | |
666 | server_estab(struct Client *client_p) | |
667 | { | |
668 | struct Client *target_p; | |
669 | struct server_conf *server_p; | |
670 | hook_data_client hdata; | |
671 | char *host; | |
af81d5a0 | 672 | rb_dlink_node *ptr; |
a5497589 | 673 | char note[HOSTLEN + 15]; |
212380e3 | 674 | |
675 | s_assert(NULL != client_p); | |
676 | if(client_p == NULL) | |
677 | return -1; | |
212380e3 | 678 | |
679 | host = client_p->name; | |
680 | ||
681 | if((server_p = client_p->localClient->att_sconf) == NULL) | |
682 | { | |
683 | /* This shouldn't happen, better tell the ops... -A1kmm */ | |
684 | sendto_realops_snomask(SNO_GENERAL, is_remote_connect(client_p) ? L_NETWIDE : L_ALL, | |
685 | "Warning: Lost connect{} block for server %s!", host); | |
686 | return exit_client(client_p, client_p, client_p, "Lost connect{} block!"); | |
687 | } | |
688 | ||
689 | /* We shouldn't have to check this, it should already done before | |
690 | * server_estab is called. -A1kmm | |
691 | */ | |
692 | if(client_p->localClient->passwd) | |
693 | { | |
694 | memset(client_p->localClient->passwd, 0, strlen(client_p->localClient->passwd)); | |
90a3c35b | 695 | rb_free(client_p->localClient->passwd); |
212380e3 | 696 | client_p->localClient->passwd = NULL; |
697 | } | |
698 | ||
699 | /* Its got identd , since its a server */ | |
700 | SetGotId(client_p); | |
701 | ||
702 | /* If there is something in the serv_list, it might be this | |
703 | * connecting server.. | |
704 | */ | |
705 | if(!ServerInfo.hub && serv_list.head) | |
706 | { | |
707 | if(client_p != serv_list.head->data || serv_list.head->next) | |
708 | { | |
83251205 | 709 | ServerStats.is_ref++; |
212380e3 | 710 | sendto_one(client_p, "ERROR :I'm a leaf not a hub"); |
711 | return exit_client(client_p, client_p, client_p, "I'm a leaf"); | |
712 | } | |
713 | } | |
714 | ||
715 | if(IsUnknown(client_p)) | |
716 | { | |
717 | /* | |
718 | * jdc -- 1. Use EmptyString(), not [0] index reference. | |
719 | * 2. Check ->spasswd, not ->passwd. | |
720 | */ | |
721 | if(!EmptyString(server_p->spasswd)) | |
722 | { | |
cda8e9b8 | 723 | sendto_one(client_p, "PASS %s TS %d :%s", |
724 | server_p->spasswd, TS_CURRENT, me.id); | |
212380e3 | 725 | } |
726 | ||
727 | /* pass info to new server */ | |
728 | send_capabilities(client_p, default_server_capabs | |
729 | | (ServerConfCompressed(server_p) ? CAP_ZIP_SUPPORTED : 0) | |
730 | | (ServerConfTb(server_p) ? CAP_TB : 0)); | |
731 | ||
732 | sendto_one(client_p, "SERVER %s 1 :%s%s", | |
733 | me.name, | |
734 | ConfigServerHide.hidden ? "(H) " : "", | |
735 | (me.info[0]) ? (me.info) : "IRCers United"); | |
736 | } | |
737 | ||
a5497589 | 738 | if(!rb_set_buffers(client_p->localClient->F, READBUF_SIZE)) |
d7b7d8bb | 739 | ilog_error("rb_set_buffers failed for server"); |
212380e3 | 740 | |
8db00894 | 741 | /* Enable compression now */ |
e30b893e VY |
742 | if(IsCapable(client_p, CAP_ZIP)) |
743 | { | |
744 | start_zlib_session(client_p); | |
745 | } | |
8a78afe4 | 746 | sendto_one(client_p, "SVINFO %d %d 0 :%ld", TS_CURRENT, TS_MIN, (long int)rb_current_time()); |
212380e3 | 747 | |
748 | client_p->servptr = &me; | |
749 | ||
750 | if(IsAnyDead(client_p)) | |
751 | return CLIENT_EXITED; | |
752 | ||
753 | SetServer(client_p); | |
754 | ||
755 | /* Update the capability combination usage counts */ | |
756 | set_chcap_usage_counts(client_p); | |
757 | ||
af81d5a0 | 758 | rb_dlinkAdd(client_p, &client_p->lnode, &me.serv->servers); |
af81d5a0 WP |
759 | rb_dlinkMoveNode(&client_p->localClient->tnode, &unknown_list, &serv_list); |
760 | rb_dlinkAddTailAlloc(client_p, &global_serv_list); | |
212380e3 | 761 | |
762 | if(has_id(client_p)) | |
763 | add_to_id_hash(client_p->id, client_p); | |
764 | ||
765 | add_to_client_hash(client_p->name, client_p); | |
766 | /* doesnt duplicate client_p->serv if allocated this struct already */ | |
767 | make_server(client_p); | |
212380e3 | 768 | |
769 | client_p->serv->caps = client_p->localClient->caps; | |
770 | ||
771 | if(client_p->localClient->fullcaps) | |
772 | { | |
62d28946 | 773 | client_p->serv->fullcaps = rb_strdup(client_p->localClient->fullcaps); |
90a3c35b | 774 | rb_free(client_p->localClient->fullcaps); |
212380e3 | 775 | client_p->localClient->fullcaps = NULL; |
776 | } | |
777 | ||
994544c2 | 778 | client_p->serv->nameinfo = scache_connect(client_p->name, client_p->info, IsHidden(client_p)); |
9f6bbe3c | 779 | client_p->localClient->firsttime = rb_current_time(); |
212380e3 | 780 | /* fixing eob timings.. -gnp */ |
781 | ||
af81d5a0 | 782 | if((rb_dlink_list_length(&lclient_list) + rb_dlink_list_length(&serv_list)) > |
2f15f871 | 783 | (unsigned long)MaxConnectionCount) |
af81d5a0 WP |
784 | MaxConnectionCount = rb_dlink_list_length(&lclient_list) + |
785 | rb_dlink_list_length(&serv_list); | |
2f15f871 | 786 | |
212380e3 | 787 | /* Show the real host/IP to admins */ |
788 | sendto_realops_snomask(SNO_GENERAL, L_ALL, | |
789 | "Link with %s established: (%s) link", | |
715b28fe | 790 | client_p->name, |
212380e3 | 791 | show_capabilities(client_p)); |
792 | ||
793 | ilog(L_SERVER, "Link with %s established: (%s) link", | |
794 | log_client_name(client_p, SHOW_IP), show_capabilities(client_p)); | |
795 | ||
796 | hdata.client = &me; | |
797 | hdata.target = client_p; | |
798 | call_hook(h_server_introduced, &hdata); | |
799 | ||
e30b893e | 800 | rb_snprintf(note, sizeof(note), "Server: %s", client_p->name); |
8db00894 | 801 | rb_note(client_p->localClient->F, note); |
212380e3 | 802 | |
803 | /* | |
804 | ** Old sendto_serv_but_one() call removed because we now | |
805 | ** need to send different names to different servers | |
806 | ** (domain name matching) Send new server to other servers. | |
807 | */ | |
8e69bb4e | 808 | RB_DLINK_FOREACH(ptr, serv_list.head) |
212380e3 | 809 | { |
810 | target_p = ptr->data; | |
811 | ||
812 | if(target_p == client_p) | |
813 | continue; | |
814 | ||
815 | if(has_id(target_p) && has_id(client_p)) | |
816 | { | |
817 | sendto_one(target_p, ":%s SID %s 2 %s :%s%s", | |
818 | me.id, client_p->name, client_p->id, | |
819 | IsHidden(client_p) ? "(H) " : "", client_p->info); | |
820 | ||
821 | if(IsCapable(target_p, CAP_ENCAP) && | |
822 | !EmptyString(client_p->serv->fullcaps)) | |
823 | sendto_one(target_p, ":%s ENCAP * GCAP :%s", | |
824 | client_p->id, client_p->serv->fullcaps); | |
825 | } | |
826 | else | |
827 | { | |
828 | sendto_one(target_p, ":%s SERVER %s 2 :%s%s", | |
829 | me.name, client_p->name, | |
830 | IsHidden(client_p) ? "(H) " : "", client_p->info); | |
831 | ||
832 | if(IsCapable(target_p, CAP_ENCAP) && | |
833 | !EmptyString(client_p->serv->fullcaps)) | |
834 | sendto_one(target_p, ":%s ENCAP * GCAP :%s", | |
835 | client_p->name, client_p->serv->fullcaps); | |
836 | } | |
837 | } | |
838 | ||
839 | /* | |
840 | ** Pass on my client information to the new server | |
841 | ** | |
842 | ** First, pass only servers (idea is that if the link gets | |
843 | ** cancelled beacause the server was already there, | |
844 | ** there are no NICK's to be cancelled...). Of course, | |
845 | ** if cancellation occurs, all this info is sent anyway, | |
846 | ** and I guess the link dies when a read is attempted...? --msa | |
847 | ** | |
848 | ** Note: Link cancellation to occur at this point means | |
849 | ** that at least two servers from my fragment are building | |
850 | ** up connection this other fragment at the same time, it's | |
851 | ** a race condition, not the normal way of operation... | |
852 | ** | |
853 | ** ALSO NOTE: using the get_client_name for server names-- | |
854 | ** see previous *WARNING*!!! (Also, original inpath | |
855 | ** is destroyed...) | |
856 | */ | |
8e69bb4e | 857 | RB_DLINK_FOREACH(ptr, global_serv_list.head) |
212380e3 | 858 | { |
859 | target_p = ptr->data; | |
860 | ||
861 | /* target_p->from == target_p for target_p == client_p */ | |
862 | if(IsMe(target_p) || target_p->from == client_p) | |
863 | continue; | |
864 | ||
865 | /* presumption, if target has an id, so does its uplink */ | |
866 | if(has_id(client_p) && has_id(target_p)) | |
867 | sendto_one(client_p, ":%s SID %s %d %s :%s%s", | |
66c8fdd2 | 868 | target_p->servptr->id, target_p->name, |
212380e3 | 869 | target_p->hopcount + 1, target_p->id, |
870 | IsHidden(target_p) ? "(H) " : "", target_p->info); | |
871 | else | |
872 | sendto_one(client_p, ":%s SERVER %s %d :%s%s", | |
66c8fdd2 | 873 | target_p->servptr->name, |
212380e3 | 874 | target_p->name, target_p->hopcount + 1, |
875 | IsHidden(target_p) ? "(H) " : "", target_p->info); | |
876 | ||
877 | if(IsCapable(client_p, CAP_ENCAP) && | |
878 | !EmptyString(target_p->serv->fullcaps)) | |
879 | sendto_one(client_p, ":%s ENCAP * GCAP :%s", | |
880 | get_id(target_p, client_p), | |
881 | target_p->serv->fullcaps); | |
882 | } | |
883 | ||
77bf1a04 | 884 | burst_TS6(client_p); |
212380e3 | 885 | |
886 | /* Always send a PING after connect burst is done */ | |
887 | sendto_one(client_p, "PING :%s", get_id(&me, client_p)); | |
888 | ||
889 | free_pre_client(client_p); | |
890 | ||
6f3b6407 | 891 | send_pop_queue(client_p); |
212380e3 | 892 | |
893 | return 0; | |
212380e3 | 894 | } |
895 | ||
896 | /* | |
897 | * New server connection code | |
898 | * Based upon the stuff floating about in s_bsd.c | |
899 | * -- adrian | |
900 | */ | |
901 | ||
cecb5c1e JT |
902 | static int |
903 | serv_connect_resolved(struct Client *client_p) | |
904 | { | |
905 | struct rb_sockaddr_storage myipnum; | |
906 | char vhoststr[HOSTIPLEN]; | |
907 | struct server_conf *server_p; | |
908 | uint16_t port; | |
909 | ||
910 | if((server_p = client_p->localClient->att_sconf) == NULL) | |
911 | { | |
912 | sendto_realops_snomask(SNO_GENERAL, is_remote_connect(client_p) ? L_NETWIDE : L_ALL, "Lost connect{} block for %s", | |
715b28fe | 913 | client_p->name); |
cecb5c1e JT |
914 | exit_client(client_p, client_p, &me, "Lost connect{} block"); |
915 | return 0; | |
916 | } | |
917 | ||
918 | #ifdef RB_IPV6 | |
919 | if(client_p->localClient->ip.ss_family == AF_INET6) | |
920 | port = ntohs(((struct sockaddr_in6 *)&client_p->localClient->ip)->sin6_port); | |
921 | else | |
922 | #endif | |
923 | port = ntohs(((struct sockaddr_in *)&client_p->localClient->ip)->sin_port); | |
924 | ||
925 | if(ServerConfVhosted(server_p)) | |
926 | { | |
927 | memcpy(&myipnum, &server_p->my_ipnum, sizeof(myipnum)); | |
928 | ((struct sockaddr_in *)&myipnum)->sin_port = 0; | |
929 | myipnum.ss_family = server_p->aftype; | |
930 | ||
931 | } | |
932 | else if(server_p->aftype == AF_INET && ServerInfo.specific_ipv4_vhost) | |
933 | { | |
934 | memcpy(&myipnum, &ServerInfo.ip, sizeof(myipnum)); | |
935 | ((struct sockaddr_in *)&myipnum)->sin_port = 0; | |
936 | myipnum.ss_family = AF_INET; | |
937 | SET_SS_LEN(&myipnum, sizeof(struct sockaddr_in)); | |
938 | } | |
939 | ||
940 | #ifdef RB_IPV6 | |
941 | else if((server_p->aftype == AF_INET6) && ServerInfo.specific_ipv6_vhost) | |
942 | { | |
943 | memcpy(&myipnum, &ServerInfo.ip6, sizeof(myipnum)); | |
944 | ((struct sockaddr_in6 *)&myipnum)->sin6_port = 0; | |
945 | myipnum.ss_family = AF_INET6; | |
946 | SET_SS_LEN(&myipnum, sizeof(struct sockaddr_in6)); | |
947 | } | |
948 | #endif | |
949 | else | |
950 | { | |
951 | /* log */ | |
952 | ilog(L_SERVER, "Connecting to %s[%s] port %d (%s)", client_p->name, client_p->sockhost, port, | |
953 | #ifdef RB_IPV6 | |
954 | server_p->aftype == AF_INET6 ? "IPv6" : | |
955 | #endif | |
956 | (server_p->aftype == AF_INET ? "IPv4" : "?")); | |
957 | ||
e30b893e VY |
958 | if(ServerConfSSL(server_p)) |
959 | { | |
960 | rb_connect_tcp(client_p->localClient->F, (struct sockaddr *)&client_p->localClient->ip, | |
961 | NULL, 0, serv_connect_ssl_callback, | |
962 | client_p, ConfigFileEntry.connect_timeout); | |
963 | } | |
964 | else | |
965 | rb_connect_tcp(client_p->localClient->F, (struct sockaddr *)&client_p->localClient->ip, | |
966 | NULL, 0, serv_connect_callback, | |
8db00894 | 967 | client_p, ConfigFileEntry.connect_timeout); |
cecb5c1e JT |
968 | return 1; |
969 | } | |
970 | ||
971 | /* log */ | |
9879cd59 | 972 | rb_inet_ntop_sock((struct sockaddr *)&myipnum, vhoststr, sizeof vhoststr); |
cecb5c1e JT |
973 | ilog(L_SERVER, "Connecting to %s[%s] port %d (%s) (vhost %s)", client_p->name, client_p->sockhost, port, |
974 | #ifdef RB_IPV6 | |
975 | server_p->aftype == AF_INET6 ? "IPv6" : | |
976 | #endif | |
977 | (server_p->aftype == AF_INET ? "IPv4" : "?"), vhoststr); | |
978 | ||
979 | ||
e30b893e VY |
980 | if(ServerConfSSL(server_p)) |
981 | rb_connect_tcp(client_p->localClient->F, (struct sockaddr *)&client_p->localClient->ip, | |
982 | (struct sockaddr *) &myipnum, | |
983 | GET_SS_LEN(&myipnum), serv_connect_ssl_callback, client_p, | |
984 | ConfigFileEntry.connect_timeout); | |
985 | else | |
986 | rb_connect_tcp(client_p->localClient->F, (struct sockaddr *)&client_p->localClient->ip, | |
987 | (struct sockaddr *) &myipnum, | |
988 | GET_SS_LEN(&myipnum), serv_connect_callback, client_p, | |
8db00894 | 989 | ConfigFileEntry.connect_timeout); |
cecb5c1e JT |
990 | |
991 | return 1; | |
992 | } | |
993 | ||
994 | static void | |
995 | serv_connect_dns_callback(void *vptr, struct DNSReply *reply) | |
996 | { | |
997 | struct Client *client_p = vptr; | |
998 | uint16_t port; | |
999 | ||
1000 | rb_free(client_p->localClient->dnsquery); | |
1001 | client_p->localClient->dnsquery = NULL; | |
1002 | ||
1003 | if (reply == NULL) | |
1004 | { | |
1005 | sendto_realops_snomask(SNO_GENERAL, is_remote_connect(client_p) ? L_NETWIDE : L_ALL, "Cannot resolve hostname for %s", | |
715b28fe | 1006 | client_p->name); |
cecb5c1e JT |
1007 | ilog(L_SERVER, "Cannot resolve hostname for %s", |
1008 | log_client_name(client_p, HIDE_IP)); | |
1009 | exit_client(client_p, client_p, &me, "Cannot resolve hostname"); | |
1010 | return; | |
1011 | } | |
1012 | #ifdef RB_IPV6 | |
1013 | if(reply->addr.ss_family == AF_INET6) | |
1014 | port = ((struct sockaddr_in6 *)&client_p->localClient->ip)->sin6_port; | |
1015 | else | |
1016 | #endif | |
1017 | port = ((struct sockaddr_in *)&client_p->localClient->ip)->sin_port; | |
1018 | memcpy(&client_p->localClient->ip, &reply->addr, sizeof(client_p->localClient->ip)); | |
1019 | #ifdef RB_IPV6 | |
1020 | if(reply->addr.ss_family == AF_INET6) | |
1021 | ((struct sockaddr_in6 *)&client_p->localClient->ip)->sin6_port = port; | |
1022 | else | |
1023 | #endif | |
1024 | ((struct sockaddr_in *)&client_p->localClient->ip)->sin_port = port; | |
1025 | /* Set sockhost properly now -- jilles */ | |
9879cd59 | 1026 | rb_inet_ntop_sock((struct sockaddr *)&client_p->localClient->ip, |
cecb5c1e JT |
1027 | client_p->sockhost, sizeof client_p->sockhost); |
1028 | serv_connect_resolved(client_p); | |
1029 | } | |
1030 | ||
212380e3 | 1031 | /* |
1032 | * serv_connect() - initiate a server connection | |
1033 | * | |
1034 | * inputs - pointer to conf | |
1035 | * - pointer to client doing the connet | |
1036 | * output - | |
1037 | * side effects - | |
1038 | * | |
1039 | * This code initiates a connection to a server. It first checks to make | |
1040 | * sure the given server exists. If this is the case, it creates a socket, | |
1041 | * creates a client, saves the socket information in the client, and | |
38e6acdd | 1042 | * initiates a connection to the server through rb_connect_tcp(). The |
212380e3 | 1043 | * completion of this goes through serv_completed_connection(). |
1044 | * | |
1045 | * We return 1 if the connection is attempted, since we don't know whether | |
1046 | * it suceeded or not, and 0 if it fails in here somewhere. | |
1047 | */ | |
1048 | int | |
1049 | serv_connect(struct server_conf *server_p, struct Client *by) | |
1050 | { | |
1051 | struct Client *client_p; | |
cecb5c1e | 1052 | struct rb_sockaddr_storage theiripnum; |
a5497589 | 1053 | rb_fde_t *F; |
a5497589 | 1054 | char note[HOSTLEN + 10]; |
212380e3 | 1055 | |
1056 | s_assert(server_p != NULL); | |
1057 | if(server_p == NULL) | |
1058 | return 0; | |
1059 | ||
1060 | /* | |
1061 | * Make sure this server isn't already connected | |
1062 | */ | |
1063 | if((client_p = find_server(NULL, server_p->name))) | |
1064 | { | |
1065 | sendto_realops_snomask(SNO_GENERAL, L_ALL, | |
1066 | "Server %s already present from %s", | |
715b28fe | 1067 | server_p->name, client_p->name); |
212380e3 | 1068 | if(by && IsPerson(by) && !MyClient(by)) |
1069 | sendto_one_notice(by, ":Server %s already present from %s", | |
715b28fe | 1070 | server_p->name, client_p->name); |
212380e3 | 1071 | return 0; |
1072 | } | |
1073 | ||
1074 | /* create a socket for the server connection */ | |
39aff273 | 1075 | if((F = rb_socket(server_p->aftype, SOCK_STREAM, 0, NULL)) == NULL) |
212380e3 | 1076 | { |
d7b7d8bb | 1077 | ilog_error("opening a stream socket"); |
212380e3 | 1078 | return 0; |
1079 | } | |
1080 | ||
a5497589 JT |
1081 | rb_snprintf(note, sizeof note, "Server: %s", server_p->name); |
1082 | rb_note(F, note); | |
212380e3 | 1083 | |
1084 | /* Create a local client */ | |
1085 | client_p = make_client(NULL); | |
1086 | ||
1087 | /* Copy in the server, hostname, fd | |
1088 | * The sockhost may be a hostname, this will be corrected later | |
1089 | * -- jilles | |
1090 | */ | |
907468c4 VY |
1091 | rb_strlcpy(client_p->name, server_p->name, sizeof(client_p->name)); |
1092 | rb_strlcpy(client_p->host, server_p->host, sizeof(client_p->host)); | |
1093 | rb_strlcpy(client_p->sockhost, server_p->host, sizeof(client_p->sockhost)); | |
a5497589 | 1094 | client_p->localClient->F = F; |
8db00894 | 1095 | add_to_cli_fd_hash(client_p); |
212380e3 | 1096 | |
1097 | /* | |
1098 | * Set up the initial server evilness, ripped straight from | |
1099 | * connect_server(), so don't blame me for it being evil. | |
1100 | * -- adrian | |
1101 | */ | |
1102 | ||
a5497589 | 1103 | if(!rb_set_buffers(client_p->localClient->F, READBUF_SIZE)) |
212380e3 | 1104 | { |
d7b7d8bb | 1105 | ilog_error("setting the buffer size for a server connection"); |
212380e3 | 1106 | } |
1107 | ||
1108 | /* | |
1109 | * Attach config entries to client here rather than in | |
1110 | * serv_connect_callback(). This to avoid null pointer references. | |
1111 | */ | |
1112 | attach_server_conf(client_p, server_p); | |
1113 | ||
1114 | /* | |
1115 | * at this point we have a connection in progress and C/N lines | |
1116 | * attached to the client, the socket info should be saved in the | |
1117 | * client and it should either be resolved or have a valid address. | |
1118 | * | |
1119 | * The socket has been connected or connect is in progress. | |
1120 | */ | |
1121 | make_server(client_p); | |
1122 | if(by && IsPerson(by)) | |
1123 | { | |
1124 | strcpy(client_p->serv->by, by->name); | |
1125 | if(client_p->serv->user) | |
1126 | free_user(client_p->serv->user, NULL); | |
1127 | client_p->serv->user = by->user; | |
1128 | by->user->refcnt++; | |
1129 | } | |
1130 | else | |
1131 | { | |
1132 | strcpy(client_p->serv->by, "AutoConn."); | |
1133 | if(client_p->serv->user) | |
1134 | free_user(client_p->serv->user, NULL); | |
1135 | client_p->serv->user = NULL; | |
1136 | } | |
212380e3 | 1137 | SetConnecting(client_p); |
af81d5a0 | 1138 | rb_dlinkAddTail(client_p, &client_p->node, &global_client_list); |
212380e3 | 1139 | |
cecb5c1e | 1140 | if (rb_inet_pton_sock(server_p->host, (struct sockaddr *)&theiripnum) > 0) |
212380e3 | 1141 | { |
cecb5c1e | 1142 | memcpy(&client_p->localClient->ip, &theiripnum, sizeof(client_p->localClient->ip)); |
2c2e0aa9 | 1143 | #ifdef RB_IPV6 |
cecb5c1e JT |
1144 | if(theiripnum.ss_family == AF_INET6) |
1145 | ((struct sockaddr_in6 *)&client_p->localClient->ip)->sin6_port = htons(server_p->port); | |
1146 | else | |
212380e3 | 1147 | #endif |
cecb5c1e JT |
1148 | ((struct sockaddr_in *)&client_p->localClient->ip)->sin_port = htons(server_p->port); |
1149 | ||
1150 | return serv_connect_resolved(client_p); | |
1151 | } | |
212380e3 | 1152 | else |
1153 | { | |
2c2e0aa9 | 1154 | #ifdef RB_IPV6 |
cecb5c1e JT |
1155 | if(theiripnum.ss_family == AF_INET6) |
1156 | ((struct sockaddr_in6 *)&client_p->localClient->ip)->sin6_port = htons(server_p->port); | |
1157 | else | |
17648928 | 1158 | #endif |
cecb5c1e | 1159 | ((struct sockaddr_in *)&client_p->localClient->ip)->sin_port = htons(server_p->port); |
17648928 | 1160 | |
cecb5c1e JT |
1161 | client_p->localClient->dnsquery = rb_malloc(sizeof(struct DNSQuery)); |
1162 | client_p->localClient->dnsquery->ptr = client_p; | |
1163 | client_p->localClient->dnsquery->callback = serv_connect_dns_callback; | |
1164 | gethost_byname_type(server_p->host, client_p->localClient->dnsquery, | |
2c2e0aa9 | 1165 | #ifdef RB_IPV6 |
cecb5c1e | 1166 | server_p->aftype == AF_INET6 ? T_AAAA : |
17648928 | 1167 | #endif |
cecb5c1e JT |
1168 | T_A); |
1169 | return 1; | |
1170 | } | |
212380e3 | 1171 | } |
1172 | ||
e30b893e VY |
1173 | static void |
1174 | serv_connect_ssl_callback(rb_fde_t *F, int status, void *data) | |
1175 | { | |
1176 | struct Client *client_p = data; | |
1177 | rb_fde_t *xF[2]; | |
faed5542 | 1178 | rb_connect_sockaddr(F, (struct sockaddr *)&client_p->localClient->ip, sizeof(client_p->localClient->ip)); |
e30b893e VY |
1179 | if(status != RB_OK) |
1180 | { | |
faed5542 JT |
1181 | /* Print error message, just like non-SSL. */ |
1182 | serv_connect_callback(F, status, data); | |
e30b893e VY |
1183 | return; |
1184 | } | |
e421505e JT |
1185 | if(rb_socketpair(AF_UNIX, SOCK_STREAM, 0, &xF[0], &xF[1], "Outgoing ssld connection") == -1) |
1186 | { | |
1187 | ilog_error("rb_socketpair failed for server"); | |
1188 | serv_connect_callback(F, RB_ERROR, data); | |
1189 | return; | |
1190 | ||
1191 | } | |
e30b893e VY |
1192 | del_from_cli_fd_hash(client_p); |
1193 | client_p->localClient->F = xF[0]; | |
1194 | add_to_cli_fd_hash(client_p); | |
1195 | ||
1196 | client_p->localClient->ssl_ctl = start_ssld_connect(F, xF[1], rb_get_fd(xF[0])); | |
1197 | SetSSL(client_p); | |
0d093bfe | 1198 | serv_connect_callback(client_p->localClient->F, RB_OK, client_p); |
8db00894 VY |
1199 | } |
1200 | ||
212380e3 | 1201 | /* |
1202 | * serv_connect_callback() - complete a server connection. | |
1203 | * | |
1204 | * This routine is called after the server connection attempt has | |
1205 | * completed. If unsucessful, an error is sent to ops and the client | |
1206 | * is closed. If sucessful, it goes through the initialisation/check | |
1207 | * procedures, the capabilities are sent, and the socket is then | |
1208 | * marked for reading. | |
1209 | */ | |
1210 | static void | |
a5497589 | 1211 | serv_connect_callback(rb_fde_t *F, int status, void *data) |
212380e3 | 1212 | { |
1213 | struct Client *client_p = data; | |
1214 | struct server_conf *server_p; | |
1215 | char *errstr; | |
1216 | ||
1217 | /* First, make sure its a real client! */ | |
1218 | s_assert(client_p != NULL); | |
a5497589 | 1219 | s_assert(client_p->localClient->F == F); |
212380e3 | 1220 | |
1221 | if(client_p == NULL) | |
1222 | return; | |
1223 | ||
1224 | /* while we were waiting for the callback, its possible this already | |
1225 | * linked in.. --fl | |
1226 | */ | |
1227 | if(find_server(NULL, client_p->name) != NULL) | |
1228 | { | |
1229 | exit_client(client_p, client_p, &me, "Server Exists"); | |
1230 | return; | |
1231 | } | |
1232 | ||
e30b893e | 1233 | if(client_p->localClient->ssl_ctl == NULL) |
8db00894 VY |
1234 | rb_connect_sockaddr(F, (struct sockaddr *)&client_p->localClient->ip, sizeof(client_p->localClient->ip)); |
1235 | ||
212380e3 | 1236 | /* Check the status */ |
a5497589 | 1237 | if(status != RB_OK) |
212380e3 | 1238 | { |
1239 | /* COMM_ERR_TIMEOUT wont have an errno associated with it, | |
1240 | * the others will.. --fl | |
1241 | */ | |
a5497589 | 1242 | if(status == RB_ERR_TIMEOUT) |
212380e3 | 1243 | { |
1244 | sendto_realops_snomask(SNO_GENERAL, is_remote_connect(client_p) ? L_NETWIDE : L_ALL, | |
1245 | "Error connecting to %s[%s]: %s", | |
1246 | client_p->name, | |
212380e3 | 1247 | "255.255.255.255", |
38e6acdd | 1248 | rb_errstr(status)); |
212380e3 | 1249 | ilog(L_SERVER, "Error connecting to %s[%s]: %s", |
1250 | client_p->name, client_p->sockhost, | |
38e6acdd | 1251 | rb_errstr(status)); |
212380e3 | 1252 | } |
1253 | else | |
1254 | { | |
a5497589 | 1255 | errstr = strerror(rb_get_sockerr(F)); |
212380e3 | 1256 | sendto_realops_snomask(SNO_GENERAL, is_remote_connect(client_p) ? L_NETWIDE : L_ALL, |
1257 | "Error connecting to %s[%s]: %s (%s)", | |
1258 | client_p->name, | |
212380e3 | 1259 | "255.255.255.255", |
38e6acdd | 1260 | rb_errstr(status), errstr); |
212380e3 | 1261 | ilog(L_SERVER, "Error connecting to %s[%s]: %s (%s)", |
1262 | client_p->name, client_p->sockhost, | |
38e6acdd | 1263 | rb_errstr(status), errstr); |
212380e3 | 1264 | } |
1265 | ||
38e6acdd | 1266 | exit_client(client_p, client_p, &me, rb_errstr(status)); |
212380e3 | 1267 | return; |
1268 | } | |
1269 | ||
1270 | /* COMM_OK, so continue the connection procedure */ | |
1271 | /* Get the C/N lines */ | |
1272 | if((server_p = client_p->localClient->att_sconf) == NULL) | |
1273 | { | |
1274 | sendto_realops_snomask(SNO_GENERAL, is_remote_connect(client_p) ? L_NETWIDE : L_ALL, "Lost connect{} block for %s", | |
715b28fe | 1275 | client_p->name); |
212380e3 | 1276 | exit_client(client_p, client_p, &me, "Lost connect{} block"); |
1277 | return; | |
1278 | } | |
1279 | ||
1280 | /* Next, send the initial handshake */ | |
1281 | SetHandshake(client_p); | |
1282 | ||
212380e3 | 1283 | if(!EmptyString(server_p->spasswd)) |
1284 | { | |
cda8e9b8 | 1285 | sendto_one(client_p, "PASS %s TS %d :%s", |
1286 | server_p->spasswd, TS_CURRENT, me.id); | |
212380e3 | 1287 | } |
1288 | ||
1289 | /* pass my info to the new server */ | |
1290 | send_capabilities(client_p, default_server_capabs | |
1291 | | (ServerConfCompressed(server_p) ? CAP_ZIP_SUPPORTED : 0) | |
1292 | | (ServerConfTb(server_p) ? CAP_TB : 0)); | |
1293 | ||
1294 | sendto_one(client_p, "SERVER %s 1 :%s%s", | |
1295 | me.name, | |
1296 | ConfigServerHide.hidden ? "(H) " : "", me.info); | |
1297 | ||
1298 | /* | |
1299 | * If we've been marked dead because a send failed, just exit | |
1300 | * here now and save everyone the trouble of us ever existing. | |
1301 | */ | |
1302 | if(IsAnyDead(client_p)) | |
1303 | { | |
1304 | sendto_realops_snomask(SNO_GENERAL, is_remote_connect(client_p) ? L_NETWIDE : L_ALL, | |
1305 | "%s went dead during handshake", client_p->name); | |
1306 | exit_client(client_p, client_p, &me, "Went dead during handshake"); | |
1307 | return; | |
1308 | } | |
1309 | ||
1310 | /* don't move to serv_list yet -- we haven't sent a burst! */ | |
1311 | ||
1312 | /* If we get here, we're ok, so lets start reading some data */ | |
a5497589 | 1313 | read_packet(F, client_p); |
212380e3 | 1314 | } |