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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 AC |
37 | #include "hash.h" |
38 | #include "irc_string.h" | |
39 | #include "sprintf_irc.h" | |
40 | #include "ircd.h" | |
41 | #include "ircd_defs.h" | |
42 | #include "numeric.h" | |
43 | #include "packet.h" | |
44 | #include "res.h" | |
212380e3 AC |
45 | #include "s_conf.h" |
46 | #include "s_newconf.h" | |
4016731b | 47 | #include "logger.h" |
212380e3 AC |
48 | #include "s_stats.h" |
49 | #include "s_user.h" | |
50 | #include "scache.h" | |
51 | #include "send.h" | |
52 | #include "client.h" | |
212380e3 AC |
53 | #include "channel.h" /* chcap_usage_counts stuff... */ |
54 | #include "hook.h" | |
55 | #include "msg.h" | |
54015b5f | 56 | #include "reject.h" |
c6d72037 | 57 | #include "sslproc.h" |
212380e3 AC |
58 | |
59 | extern char *crypt(); | |
60 | ||
61 | #ifndef INADDR_NONE | |
62 | #define INADDR_NONE ((unsigned int) 0xffffffff) | |
63 | #endif | |
64 | ||
65 | #ifndef HAVE_SOCKETPAIR | |
66 | static int inet_socketpair(int d, int type, int protocol, int sv[2]); | |
67 | #endif | |
68 | ||
69 | int MaxConnectionCount = 1; | |
70 | int MaxClientCount = 1; | |
71 | int refresh_user_links = 0; | |
72 | ||
73 | static char buf[BUFSIZE]; | |
74 | ||
212380e3 AC |
75 | /* |
76 | * list of recognized server capabilities. "TS" is not on the list | |
77 | * because all servers that we talk to already do TS, and the kludged | |
78 | * extra argument to "PASS" takes care of checking that. -orabidoo | |
79 | */ | |
80 | struct Capability captab[] = { | |
81 | /* name cap */ | |
82 | { "QS", CAP_QS }, | |
83 | { "EX", CAP_EX }, | |
84 | { "CHW", CAP_CHW}, | |
85 | { "IE", CAP_IE}, | |
86 | { "KLN", CAP_KLN}, | |
212380e3 AC |
87 | { "KNOCK", CAP_KNOCK}, |
88 | { "ZIP", CAP_ZIP}, | |
89 | { "TB", CAP_TB}, | |
90 | { "UNKLN", CAP_UNKLN}, | |
91 | { "CLUSTER", CAP_CLUSTER}, | |
92 | { "ENCAP", CAP_ENCAP }, | |
93 | { "SERVICES", CAP_SERVICE }, | |
94 | { "RSFNC", CAP_RSFNC }, | |
95 | { "SAVE", CAP_SAVE }, | |
96 | { "EUID", CAP_EUID }, | |
97 | {0, 0} | |
98 | }; | |
99 | ||
212380e3 | 100 | static CNCB serv_connect_callback; |
c6d72037 | 101 | static CNCB serv_connect_ssl_callback; |
212380e3 AC |
102 | |
103 | /* | |
104 | * hunt_server - Do the basic thing in delivering the message (command) | |
105 | * across the relays to the specific server (server) for | |
106 | * actions. | |
107 | * | |
108 | * Note: The command is a format string and *MUST* be | |
109 | * of prefixed style (e.g. ":%s COMMAND %s ..."). | |
110 | * Command can have only max 8 parameters. | |
111 | * | |
112 | * server parv[server] is the parameter identifying the | |
113 | * target server. | |
114 | * | |
115 | * *WARNING* | |
116 | * parv[server] is replaced with the pointer to the | |
117 | * real servername from the matched client (I'm lazy | |
118 | * now --msa). | |
119 | * | |
120 | * returns: (see #defines) | |
121 | */ | |
122 | int | |
123 | hunt_server(struct Client *client_p, struct Client *source_p, | |
124 | const char *command, int server, int parc, const char *parv[]) | |
125 | { | |
126 | struct Client *target_p; | |
127 | int wilds; | |
330fc5c1 | 128 | rb_dlink_node *ptr; |
212380e3 AC |
129 | const char *old; |
130 | char *new; | |
131 | ||
132 | /* | |
133 | * Assume it's me, if no server | |
134 | */ | |
135 | if(parc <= server || EmptyString(parv[server]) || | |
4d7a1ee5 | 136 | match(parv[server], me.name) || (strcmp(parv[server], me.id) == 0)) |
212380e3 AC |
137 | return (HUNTED_ISME); |
138 | ||
139 | new = LOCAL_COPY(parv[server]); | |
140 | ||
141 | /* | |
142 | * These are to pickup matches that would cause the following | |
143 | * message to go in the wrong direction while doing quick fast | |
144 | * non-matching lookups. | |
145 | */ | |
146 | if(MyClient(source_p)) | |
147 | target_p = find_named_client(new); | |
148 | else | |
149 | target_p = find_client(new); | |
150 | ||
151 | if(target_p) | |
152 | if(target_p->from == source_p->from && !MyConnect(target_p)) | |
153 | target_p = NULL; | |
154 | ||
212380e3 AC |
155 | collapse(new); |
156 | wilds = (strchr(new, '?') || strchr(new, '*')); | |
157 | ||
158 | /* | |
159 | * Again, if there are no wild cards involved in the server | |
160 | * name, use the hash lookup | |
161 | */ | |
162 | if(!target_p) | |
163 | { | |
164 | if(!wilds) | |
165 | { | |
166 | if(MyClient(source_p) || !IsDigit(parv[server][0])) | |
167 | sendto_one_numeric(source_p, ERR_NOSUCHSERVER, | |
168 | form_str(ERR_NOSUCHSERVER), | |
169 | parv[server]); | |
170 | return (HUNTED_NOSUCH); | |
171 | } | |
172 | else | |
173 | { | |
174 | target_p = NULL; | |
175 | ||
5cefa1d6 | 176 | RB_DLINK_FOREACH(ptr, global_client_list.head) |
212380e3 AC |
177 | { |
178 | if(match(new, ((struct Client *) (ptr->data))->name)) | |
179 | { | |
180 | target_p = ptr->data; | |
181 | break; | |
182 | } | |
183 | } | |
184 | } | |
185 | } | |
186 | ||
187 | if(target_p) | |
188 | { | |
189 | if(!IsRegistered(target_p)) | |
190 | { | |
191 | sendto_one_numeric(source_p, ERR_NOSUCHSERVER, | |
192 | form_str(ERR_NOSUCHSERVER), | |
193 | parv[server]); | |
194 | return HUNTED_NOSUCH; | |
195 | } | |
196 | ||
197 | if(IsMe(target_p) || MyClient(target_p)) | |
198 | return HUNTED_ISME; | |
199 | ||
200 | old = parv[server]; | |
201 | parv[server] = get_id(target_p, target_p); | |
202 | ||
203 | sendto_one(target_p, command, get_id(source_p, target_p), | |
204 | parv[1], parv[2], parv[3], parv[4], parv[5], parv[6], parv[7], parv[8]); | |
205 | parv[server] = old; | |
206 | return (HUNTED_PASS); | |
207 | } | |
208 | ||
95d36ef5 | 209 | if(MyClient(source_p) || !IsDigit(parv[server][0])) |
212380e3 AC |
210 | sendto_one_numeric(source_p, ERR_NOSUCHSERVER, |
211 | form_str(ERR_NOSUCHSERVER), parv[server]); | |
212 | return (HUNTED_NOSUCH); | |
213 | } | |
214 | ||
215 | /* | |
216 | * try_connections - scan through configuration and try new connections. | |
217 | * Returns the calendar time when the next call to this | |
218 | * function should be made latest. (No harm done if this | |
219 | * is called earlier or later...) | |
220 | */ | |
221 | void | |
222 | try_connections(void *unused) | |
223 | { | |
224 | struct Client *client_p; | |
225 | struct server_conf *server_p = NULL; | |
226 | struct server_conf *tmp_p; | |
227 | struct Class *cltmp; | |
330fc5c1 | 228 | rb_dlink_node *ptr; |
212380e3 AC |
229 | int connecting = FALSE; |
230 | int confrq = 0; | |
231 | time_t next = 0; | |
232 | ||
5cefa1d6 | 233 | RB_DLINK_FOREACH(ptr, server_conf_list.head) |
212380e3 AC |
234 | { |
235 | tmp_p = ptr->data; | |
236 | ||
237 | if(ServerConfIllegal(tmp_p) || !ServerConfAutoconn(tmp_p)) | |
238 | continue; | |
239 | ||
f4a759c5 VY |
240 | /* don't allow ssl connections if ssl isn't setup */ |
241 | if(ServerConfSSL(tmp_p) && (!ssl_ok || !get_ssld_count())) | |
c6d72037 VY |
242 | continue; |
243 | ||
212380e3 AC |
244 | cltmp = tmp_p->class; |
245 | ||
246 | /* | |
247 | * Skip this entry if the use of it is still on hold until | |
248 | * future. Otherwise handle this entry (and set it on hold | |
249 | * until next time). Will reset only hold times, if already | |
250 | * made one successfull connection... [this algorithm is | |
251 | * a bit fuzzy... -- msa >;) ] | |
252 | */ | |
e3354945 | 253 | if(tmp_p->hold > rb_current_time()) |
212380e3 AC |
254 | { |
255 | if(next > tmp_p->hold || next == 0) | |
256 | next = tmp_p->hold; | |
257 | continue; | |
258 | } | |
259 | ||
260 | confrq = get_con_freq(cltmp); | |
e3354945 | 261 | tmp_p->hold = rb_current_time() + confrq; |
212380e3 AC |
262 | |
263 | /* | |
264 | * Found a CONNECT config with port specified, scan clients | |
265 | * and see if this server is already connected? | |
266 | */ | |
267 | client_p = find_server(NULL, tmp_p->name); | |
268 | ||
269 | if(!client_p && (CurrUsers(cltmp) < MaxUsers(cltmp)) && !connecting) | |
270 | { | |
271 | server_p = tmp_p; | |
272 | ||
273 | /* We connect only one at time... */ | |
274 | connecting = TRUE; | |
275 | } | |
276 | ||
277 | if((next > tmp_p->hold) || (next == 0)) | |
278 | next = tmp_p->hold; | |
279 | } | |
280 | ||
281 | /* TODO: change this to set active flag to 0 when added to event! --Habeeb */ | |
282 | if(GlobalSetOptions.autoconn == 0) | |
283 | return; | |
284 | ||
285 | if(!connecting) | |
286 | return; | |
287 | ||
288 | /* move this connect entry to end.. */ | |
330fc5c1 AC |
289 | rb_dlinkDelete(&server_p->node, &server_conf_list); |
290 | rb_dlinkAddTail(server_p, &server_p->node, &server_conf_list); | |
212380e3 AC |
291 | |
292 | /* | |
293 | * We used to only print this if serv_connect() actually | |
b2f0da88 | 294 | * suceeded, but since rb_tcp_connect() can call the callback |
212380e3 AC |
295 | * immediately if there is an error, we were getting error messages |
296 | * in the wrong order. SO, we just print out the activated line, | |
297 | * and let serv_connect() / serv_connect_callback() print an | |
298 | * error afterwards if it fails. | |
299 | * -- adrian | |
300 | */ | |
301 | #ifndef HIDE_SERVERS_IPS | |
302 | sendto_realops_snomask(SNO_GENERAL, L_ALL, | |
303 | "Connection to %s[%s] activated.", | |
304 | server_p->name, server_p->host); | |
305 | #else | |
306 | sendto_realops_snomask(SNO_GENERAL, L_ALL, | |
307 | "Connection to %s activated", | |
308 | server_p->name); | |
309 | #endif | |
310 | ||
311 | serv_connect(server_p, 0); | |
312 | } | |
313 | ||
314 | int | |
315 | check_server(const char *name, struct Client *client_p) | |
316 | { | |
317 | struct server_conf *server_p = NULL; | |
318 | struct server_conf *tmp_p; | |
330fc5c1 | 319 | rb_dlink_node *ptr; |
212380e3 AC |
320 | int error = -1; |
321 | ||
322 | s_assert(NULL != client_p); | |
323 | if(client_p == NULL) | |
324 | return error; | |
325 | ||
326 | if(!(client_p->localClient->passwd)) | |
327 | return -2; | |
328 | ||
329 | if(strlen(name) > HOSTLEN) | |
330 | return -4; | |
331 | ||
5cefa1d6 | 332 | RB_DLINK_FOREACH(ptr, server_conf_list.head) |
212380e3 AC |
333 | { |
334 | tmp_p = ptr->data; | |
335 | ||
336 | if(ServerConfIllegal(tmp_p)) | |
337 | continue; | |
338 | ||
339 | if(!match(tmp_p->name, name)) | |
340 | continue; | |
341 | ||
342 | error = -3; | |
343 | ||
344 | /* XXX: Fix me for IPv6 */ | |
345 | /* XXX sockhost is the IPv4 ip as a string */ | |
346 | if(match(tmp_p->host, client_p->host) || | |
347 | match(tmp_p->host, client_p->sockhost)) | |
348 | { | |
349 | error = -2; | |
350 | ||
351 | if(ServerConfEncrypted(tmp_p)) | |
352 | { | |
353 | if(!strcmp(tmp_p->passwd, crypt(client_p->localClient->passwd, | |
354 | tmp_p->passwd))) | |
355 | { | |
356 | server_p = tmp_p; | |
357 | break; | |
358 | } | |
359 | } | |
360 | else if(!strcmp(tmp_p->passwd, client_p->localClient->passwd)) | |
361 | { | |
362 | server_p = tmp_p; | |
363 | break; | |
364 | } | |
365 | } | |
366 | } | |
367 | ||
368 | if(server_p == NULL) | |
369 | return error; | |
370 | ||
f4a759c5 VY |
371 | if(ServerConfSSL(server_p) && client_p->localClient->ssl_ctl == NULL) |
372 | { | |
373 | return -5; | |
c6d72037 VY |
374 | } |
375 | ||
212380e3 AC |
376 | attach_server_conf(client_p, server_p); |
377 | ||
378 | /* clear ZIP/TB if they support but we dont want them */ | |
379 | #ifdef HAVE_LIBZ | |
380 | if(!ServerConfCompressed(server_p)) | |
381 | #endif | |
382 | ClearCap(client_p, CAP_ZIP); | |
383 | ||
384 | if(!ServerConfTb(server_p)) | |
385 | ClearCap(client_p, CAP_TB); | |
386 | ||
387 | return 0; | |
388 | } | |
389 | ||
390 | /* | |
391 | * send_capabilities | |
392 | * | |
393 | * inputs - Client pointer to send to | |
394 | * - int flag of capabilities that this server has | |
395 | * output - NONE | |
396 | * side effects - send the CAPAB line to a server -orabidoo | |
397 | * | |
398 | */ | |
399 | void | |
400 | send_capabilities(struct Client *client_p, int cap_can_send) | |
401 | { | |
402 | struct Capability *cap; | |
403 | char msgbuf[BUFSIZE]; | |
404 | char *t; | |
405 | int tl; | |
406 | ||
407 | t = msgbuf; | |
408 | ||
409 | for (cap = captab; cap->name; ++cap) | |
410 | { | |
411 | if(cap->cap & cap_can_send) | |
412 | { | |
b2f0da88 | 413 | tl = rb_sprintf(t, "%s ", cap->name); |
212380e3 AC |
414 | t += tl; |
415 | } | |
416 | } | |
417 | ||
418 | t--; | |
419 | *t = '\0'; | |
420 | ||
421 | sendto_one(client_p, "CAPAB :%s", msgbuf); | |
422 | } | |
423 | ||
424 | /* burst_modes_TS5() | |
425 | * | |
426 | * input - client to burst to, channel name, list to burst, mode flag | |
427 | * output - | |
428 | * side effects - client is sent a list of +b, or +e, or +I modes | |
429 | */ | |
430 | static void | |
330fc5c1 | 431 | burst_modes_TS5(struct Client *client_p, char *chname, rb_dlink_list *list, char flag) |
212380e3 | 432 | { |
330fc5c1 | 433 | rb_dlink_node *ptr; |
212380e3 AC |
434 | struct Ban *banptr; |
435 | char mbuf[MODEBUFLEN]; | |
436 | char pbuf[BUFSIZE]; | |
437 | int tlen; | |
438 | int mlen; | |
439 | int cur_len; | |
440 | char *mp; | |
441 | char *pp; | |
442 | int count = 0; | |
443 | ||
b2f0da88 | 444 | mlen = rb_sprintf(buf, ":%s MODE %s +", me.name, chname); |
212380e3 AC |
445 | cur_len = mlen; |
446 | ||
447 | mp = mbuf; | |
448 | pp = pbuf; | |
449 | ||
5cefa1d6 | 450 | RB_DLINK_FOREACH(ptr, list->head) |
212380e3 AC |
451 | { |
452 | banptr = ptr->data; | |
453 | tlen = strlen(banptr->banstr) + 3; | |
454 | ||
455 | /* uh oh */ | |
456 | if(tlen > MODEBUFLEN) | |
457 | continue; | |
458 | ||
459 | if((count >= MAXMODEPARAMS) || ((cur_len + tlen + 2) > (BUFSIZE - 3))) | |
460 | { | |
461 | sendto_one(client_p, "%s%s %s", buf, mbuf, pbuf); | |
462 | ||
463 | mp = mbuf; | |
464 | pp = pbuf; | |
465 | cur_len = mlen; | |
466 | count = 0; | |
467 | } | |
468 | ||
469 | *mp++ = flag; | |
470 | *mp = '\0'; | |
b2f0da88 | 471 | pp += rb_sprintf(pp, "%s ", banptr->banstr); |
212380e3 AC |
472 | cur_len += tlen; |
473 | count++; | |
474 | } | |
475 | ||
476 | if(count != 0) | |
477 | sendto_one(client_p, "%s%s %s", buf, mbuf, pbuf); | |
478 | } | |
479 | ||
480 | /* burst_modes_TS6() | |
481 | * | |
482 | * input - client to burst to, channel name, list to burst, mode flag | |
483 | * output - | |
484 | * side effects - client is sent a list of +b, +e, or +I modes | |
485 | */ | |
486 | static void | |
487 | burst_modes_TS6(struct Client *client_p, struct Channel *chptr, | |
330fc5c1 | 488 | rb_dlink_list *list, char flag) |
212380e3 | 489 | { |
330fc5c1 | 490 | rb_dlink_node *ptr; |
212380e3 AC |
491 | struct Ban *banptr; |
492 | char *t; | |
493 | int tlen; | |
494 | int mlen; | |
495 | int cur_len; | |
496 | ||
b2f0da88 | 497 | cur_len = mlen = rb_sprintf(buf, ":%s BMASK %ld %s %c :", |
212380e3 AC |
498 | me.id, (long) chptr->channelts, chptr->chname, flag); |
499 | t = buf + mlen; | |
500 | ||
5cefa1d6 | 501 | RB_DLINK_FOREACH(ptr, list->head) |
212380e3 AC |
502 | { |
503 | banptr = ptr->data; | |
504 | ||
505 | tlen = strlen(banptr->banstr) + 1; | |
506 | ||
507 | /* uh oh */ | |
508 | if(cur_len + tlen > BUFSIZE - 3) | |
509 | { | |
510 | /* the one we're trying to send doesnt fit at all! */ | |
511 | if(cur_len == mlen) | |
512 | { | |
513 | s_assert(0); | |
514 | continue; | |
515 | } | |
516 | ||
517 | /* chop off trailing space and send.. */ | |
518 | *(t-1) = '\0'; | |
519 | sendto_one(client_p, "%s", buf); | |
520 | cur_len = mlen; | |
521 | t = buf + mlen; | |
522 | } | |
523 | ||
b2f0da88 | 524 | rb_sprintf(t, "%s ", banptr->banstr); |
212380e3 AC |
525 | t += tlen; |
526 | cur_len += tlen; | |
527 | } | |
528 | ||
529 | /* cant ever exit the loop above without having modified buf, | |
530 | * chop off trailing space and send. | |
531 | */ | |
532 | *(t-1) = '\0'; | |
533 | sendto_one(client_p, "%s", buf); | |
534 | } | |
535 | ||
536 | /* | |
537 | * burst_TS5 | |
538 | * | |
539 | * inputs - client (server) to send nick towards | |
540 | * - client to send nick for | |
541 | * output - NONE | |
542 | * side effects - NICK message is sent towards given client_p | |
543 | */ | |
544 | static void | |
545 | burst_TS5(struct Client *client_p) | |
546 | { | |
547 | static char ubuf[12]; | |
548 | struct Client *target_p; | |
549 | struct Channel *chptr; | |
550 | struct membership *msptr; | |
551 | hook_data_client hclientinfo; | |
552 | hook_data_channel hchaninfo; | |
330fc5c1 AC |
553 | rb_dlink_node *ptr; |
554 | rb_dlink_node *uptr; | |
212380e3 AC |
555 | char *t; |
556 | int tlen, mlen; | |
557 | int cur_len = 0; | |
558 | ||
559 | hclientinfo.client = hchaninfo.client = client_p; | |
560 | ||
5cefa1d6 | 561 | RB_DLINK_FOREACH(ptr, global_client_list.head) |
212380e3 AC |
562 | { |
563 | target_p = ptr->data; | |
564 | ||
565 | if(!IsPerson(target_p)) | |
566 | continue; | |
567 | ||
568 | send_umode(NULL, target_p, 0, 0, ubuf); | |
569 | if(!*ubuf) | |
570 | { | |
571 | ubuf[0] = '+'; | |
572 | ubuf[1] = '\0'; | |
573 | } | |
574 | ||
575 | sendto_one(client_p, "NICK %s %d %ld %s %s %s %s :%s", | |
576 | target_p->name, target_p->hopcount + 1, | |
577 | (long) target_p->tsinfo, ubuf, | |
578 | target_p->username, target_p->host, | |
c88cdb00 | 579 | target_p->servptr->name, target_p->info); |
212380e3 AC |
580 | |
581 | if(IsDynSpoof(target_p)) | |
582 | sendto_one(client_p, ":%s ENCAP * REALHOST %s", | |
583 | target_p->name, target_p->orighost); | |
584 | if(!EmptyString(target_p->user->suser)) | |
585 | sendto_one(client_p, ":%s ENCAP * LOGIN %s", | |
586 | target_p->name, target_p->user->suser); | |
587 | ||
588 | if(ConfigFileEntry.burst_away && !EmptyString(target_p->user->away)) | |
589 | sendto_one(client_p, ":%s AWAY :%s", | |
590 | target_p->name, target_p->user->away); | |
591 | ||
592 | hclientinfo.target = target_p; | |
593 | call_hook(h_burst_client, &hclientinfo); | |
594 | } | |
595 | ||
5cefa1d6 | 596 | RB_DLINK_FOREACH(ptr, global_channel_list.head) |
212380e3 AC |
597 | { |
598 | chptr = ptr->data; | |
599 | ||
600 | if(*chptr->chname != '#') | |
601 | continue; | |
602 | ||
b2f0da88 | 603 | cur_len = mlen = rb_sprintf(buf, ":%s SJOIN %ld %s %s :", me.name, |
212380e3 AC |
604 | (long) chptr->channelts, chptr->chname, |
605 | channel_modes(chptr, client_p)); | |
606 | ||
607 | t = buf + mlen; | |
608 | ||
5cefa1d6 | 609 | RB_DLINK_FOREACH(uptr, chptr->members.head) |
212380e3 AC |
610 | { |
611 | msptr = uptr->data; | |
612 | ||
613 | tlen = strlen(msptr->client_p->name) + 1; | |
614 | if(is_chanop(msptr)) | |
615 | tlen++; | |
616 | if(is_voiced(msptr)) | |
617 | tlen++; | |
618 | ||
619 | if(cur_len + tlen >= BUFSIZE - 3) | |
620 | { | |
621 | t--; | |
622 | *t = '\0'; | |
623 | sendto_one(client_p, "%s", buf); | |
624 | cur_len = mlen; | |
625 | t = buf + mlen; | |
626 | } | |
627 | ||
b2f0da88 | 628 | rb_sprintf(t, "%s%s ", find_channel_status(msptr, 1), |
212380e3 AC |
629 | msptr->client_p->name); |
630 | ||
631 | cur_len += tlen; | |
632 | t += tlen; | |
633 | } | |
634 | ||
330fc5c1 | 635 | if (rb_dlink_list_length(&chptr->members) > 0) |
212380e3 AC |
636 | { |
637 | /* remove trailing space */ | |
638 | t--; | |
639 | *t = '\0'; | |
640 | } | |
641 | sendto_one(client_p, "%s", buf); | |
642 | ||
643 | burst_modes_TS5(client_p, chptr->chname, &chptr->banlist, 'b'); | |
644 | ||
645 | if(IsCapable(client_p, CAP_EX)) | |
646 | burst_modes_TS5(client_p, chptr->chname, &chptr->exceptlist, 'e'); | |
647 | ||
648 | if(IsCapable(client_p, CAP_IE)) | |
649 | burst_modes_TS5(client_p, chptr->chname, &chptr->invexlist, 'I'); | |
650 | ||
651 | burst_modes_TS5(client_p, chptr->chname, &chptr->quietlist, 'q'); | |
652 | ||
653 | if(IsCapable(client_p, CAP_TB) && chptr->topic != NULL) | |
654 | sendto_one(client_p, ":%s TB %s %ld %s%s:%s", | |
655 | me.name, chptr->chname, (long) chptr->topic_time, | |
656 | ConfigChannel.burst_topicwho ? chptr->topic_info : "", | |
657 | ConfigChannel.burst_topicwho ? " " : "", | |
658 | chptr->topic); | |
659 | ||
660 | hchaninfo.chptr = chptr; | |
661 | call_hook(h_burst_channel, &hchaninfo); | |
662 | } | |
663 | ||
664 | hclientinfo.target = NULL; | |
665 | call_hook(h_burst_finished, &hclientinfo); | |
666 | } | |
667 | ||
668 | /* | |
669 | * burst_TS6 | |
670 | * | |
671 | * inputs - client (server) to send nick towards | |
672 | * - client to send nick for | |
673 | * output - NONE | |
674 | * side effects - NICK message is sent towards given client_p | |
675 | */ | |
676 | static void | |
677 | burst_TS6(struct Client *client_p) | |
678 | { | |
679 | static char ubuf[12]; | |
680 | struct Client *target_p; | |
681 | struct Channel *chptr; | |
682 | struct membership *msptr; | |
683 | hook_data_client hclientinfo; | |
684 | hook_data_channel hchaninfo; | |
330fc5c1 AC |
685 | rb_dlink_node *ptr; |
686 | rb_dlink_node *uptr; | |
212380e3 AC |
687 | char *t; |
688 | int tlen, mlen; | |
689 | int cur_len = 0; | |
690 | ||
691 | hclientinfo.client = hchaninfo.client = client_p; | |
692 | ||
5cefa1d6 | 693 | RB_DLINK_FOREACH(ptr, global_client_list.head) |
212380e3 AC |
694 | { |
695 | target_p = ptr->data; | |
696 | ||
697 | if(!IsPerson(target_p)) | |
698 | continue; | |
699 | ||
700 | send_umode(NULL, target_p, 0, 0, ubuf); | |
701 | if(!*ubuf) | |
702 | { | |
703 | ubuf[0] = '+'; | |
704 | ubuf[1] = '\0'; | |
705 | } | |
706 | ||
707 | if(has_id(target_p) && IsCapable(client_p, CAP_EUID)) | |
708 | sendto_one(client_p, ":%s EUID %s %d %ld %s %s %s %s %s %s %s :%s", | |
709 | target_p->servptr->id, target_p->name, | |
710 | target_p->hopcount + 1, | |
711 | (long) target_p->tsinfo, ubuf, | |
712 | target_p->username, target_p->host, | |
713 | IsIPSpoof(target_p) ? "0" : target_p->sockhost, | |
714 | target_p->id, | |
715 | IsDynSpoof(target_p) ? target_p->orighost : "*", | |
716 | EmptyString(target_p->user->suser) ? "*" : target_p->user->suser, | |
717 | target_p->info); | |
718 | else if(has_id(target_p)) | |
719 | sendto_one(client_p, ":%s UID %s %d %ld %s %s %s %s %s :%s", | |
720 | target_p->servptr->id, target_p->name, | |
721 | target_p->hopcount + 1, | |
722 | (long) target_p->tsinfo, ubuf, | |
723 | target_p->username, target_p->host, | |
724 | IsIPSpoof(target_p) ? "0" : target_p->sockhost, | |
725 | target_p->id, target_p->info); | |
726 | else | |
727 | sendto_one(client_p, "NICK %s %d %ld %s %s %s %s :%s", | |
728 | target_p->name, | |
729 | target_p->hopcount + 1, | |
730 | (long) target_p->tsinfo, | |
731 | ubuf, | |
732 | target_p->username, target_p->host, | |
c88cdb00 | 733 | target_p->servptr->name, target_p->info); |
212380e3 AC |
734 | |
735 | if(!has_id(target_p) || !IsCapable(client_p, CAP_EUID)) | |
736 | { | |
737 | if(IsDynSpoof(target_p)) | |
738 | sendto_one(client_p, ":%s ENCAP * REALHOST %s", | |
739 | use_id(target_p), target_p->orighost); | |
740 | if(!EmptyString(target_p->user->suser)) | |
741 | sendto_one(client_p, ":%s ENCAP * LOGIN %s", | |
742 | use_id(target_p), target_p->user->suser); | |
743 | } | |
744 | ||
745 | if(ConfigFileEntry.burst_away && !EmptyString(target_p->user->away)) | |
746 | sendto_one(client_p, ":%s AWAY :%s", | |
747 | use_id(target_p), | |
748 | target_p->user->away); | |
749 | ||
750 | hclientinfo.target = target_p; | |
751 | call_hook(h_burst_client, &hclientinfo); | |
752 | } | |
753 | ||
5cefa1d6 | 754 | RB_DLINK_FOREACH(ptr, global_channel_list.head) |
212380e3 AC |
755 | { |
756 | chptr = ptr->data; | |
757 | ||
758 | if(*chptr->chname != '#') | |
759 | continue; | |
760 | ||
b2f0da88 | 761 | cur_len = mlen = rb_sprintf(buf, ":%s SJOIN %ld %s %s :", me.id, |
212380e3 AC |
762 | (long) chptr->channelts, chptr->chname, |
763 | channel_modes(chptr, client_p)); | |
764 | ||
765 | t = buf + mlen; | |
766 | ||
5cefa1d6 | 767 | RB_DLINK_FOREACH(uptr, chptr->members.head) |
212380e3 AC |
768 | { |
769 | msptr = uptr->data; | |
770 | ||
771 | tlen = strlen(use_id(msptr->client_p)) + 1; | |
772 | if(is_chanop(msptr)) | |
773 | tlen++; | |
774 | if(is_voiced(msptr)) | |
775 | tlen++; | |
776 | ||
777 | if(cur_len + tlen >= BUFSIZE - 3) | |
778 | { | |
779 | *(t-1) = '\0'; | |
780 | sendto_one(client_p, "%s", buf); | |
781 | cur_len = mlen; | |
782 | t = buf + mlen; | |
783 | } | |
784 | ||
b2f0da88 | 785 | rb_sprintf(t, "%s%s ", find_channel_status(msptr, 1), |
212380e3 AC |
786 | use_id(msptr->client_p)); |
787 | ||
788 | cur_len += tlen; | |
789 | t += tlen; | |
790 | } | |
791 | ||
330fc5c1 | 792 | if (rb_dlink_list_length(&chptr->members) > 0) |
212380e3 AC |
793 | { |
794 | /* remove trailing space */ | |
795 | *(t-1) = '\0'; | |
796 | } | |
797 | sendto_one(client_p, "%s", buf); | |
798 | ||
330fc5c1 | 799 | if(rb_dlink_list_length(&chptr->banlist) > 0) |
212380e3 AC |
800 | burst_modes_TS6(client_p, chptr, &chptr->banlist, 'b'); |
801 | ||
802 | if(IsCapable(client_p, CAP_EX) && | |
330fc5c1 | 803 | rb_dlink_list_length(&chptr->exceptlist) > 0) |
212380e3 AC |
804 | burst_modes_TS6(client_p, chptr, &chptr->exceptlist, 'e'); |
805 | ||
806 | if(IsCapable(client_p, CAP_IE) && | |
330fc5c1 | 807 | rb_dlink_list_length(&chptr->invexlist) > 0) |
212380e3 AC |
808 | burst_modes_TS6(client_p, chptr, &chptr->invexlist, 'I'); |
809 | ||
330fc5c1 | 810 | if(rb_dlink_list_length(&chptr->quietlist) > 0) |
212380e3 AC |
811 | burst_modes_TS6(client_p, chptr, &chptr->quietlist, 'q'); |
812 | ||
813 | if(IsCapable(client_p, CAP_TB) && chptr->topic != NULL) | |
814 | sendto_one(client_p, ":%s TB %s %ld %s%s:%s", | |
815 | me.id, chptr->chname, (long) chptr->topic_time, | |
816 | ConfigChannel.burst_topicwho ? chptr->topic_info : "", | |
817 | ConfigChannel.burst_topicwho ? " " : "", | |
818 | chptr->topic); | |
819 | ||
820 | hchaninfo.chptr = chptr; | |
821 | call_hook(h_burst_channel, &hchaninfo); | |
822 | } | |
823 | ||
824 | hclientinfo.target = NULL; | |
825 | call_hook(h_burst_finished, &hclientinfo); | |
826 | } | |
827 | ||
828 | /* | |
829 | * show_capabilities - show current server capabilities | |
830 | * | |
831 | * inputs - pointer to an struct Client | |
832 | * output - pointer to static string | |
833 | * side effects - build up string representing capabilities of server listed | |
834 | */ | |
835 | const char * | |
836 | show_capabilities(struct Client *target_p) | |
837 | { | |
838 | static char msgbuf[BUFSIZE]; | |
839 | struct Capability *cap; | |
212380e3 | 840 | |
f4a759c5 VY |
841 | if(has_id(target_p)) |
842 | rb_strlcpy(msgbuf, " TS6", sizeof(msgbuf)); | |
843 | else | |
844 | rb_strlcpy(msgbuf, " TS", sizeof(msgbuf)); | |
845 | ||
846 | if(IsSSL(target_p)) | |
847 | rb_strlcat(msgbuf, " SSL", sizeof(msgbuf)); | |
212380e3 AC |
848 | |
849 | if(!IsServer(target_p) || !target_p->serv->caps) /* short circuit if no caps */ | |
f4a759c5 | 850 | return msgbuf + 1; |
212380e3 AC |
851 | |
852 | for (cap = captab; cap->cap; ++cap) | |
853 | { | |
854 | if(cap->cap & target_p->serv->caps) | |
f4a759c5 | 855 | rb_snprintf_append(msgbuf, sizeof(msgbuf), " %s", cap->name); |
212380e3 AC |
856 | } |
857 | ||
f4a759c5 | 858 | return msgbuf + 1; |
212380e3 AC |
859 | } |
860 | ||
861 | /* | |
862 | * server_estab | |
863 | * | |
864 | * inputs - pointer to a struct Client | |
865 | * output - | |
866 | * side effects - | |
867 | */ | |
868 | int | |
869 | server_estab(struct Client *client_p) | |
870 | { | |
871 | struct Client *target_p; | |
872 | struct server_conf *server_p; | |
873 | hook_data_client hdata; | |
874 | char *host; | |
330fc5c1 | 875 | rb_dlink_node *ptr; |
6c528b8e | 876 | char note[HOSTLEN + 15]; |
212380e3 AC |
877 | |
878 | s_assert(NULL != client_p); | |
879 | if(client_p == NULL) | |
880 | return -1; | |
212380e3 AC |
881 | |
882 | host = client_p->name; | |
883 | ||
884 | if((server_p = client_p->localClient->att_sconf) == NULL) | |
885 | { | |
886 | /* This shouldn't happen, better tell the ops... -A1kmm */ | |
887 | sendto_realops_snomask(SNO_GENERAL, is_remote_connect(client_p) ? L_NETWIDE : L_ALL, | |
888 | "Warning: Lost connect{} block for server %s!", host); | |
889 | return exit_client(client_p, client_p, client_p, "Lost connect{} block!"); | |
890 | } | |
891 | ||
892 | /* We shouldn't have to check this, it should already done before | |
893 | * server_estab is called. -A1kmm | |
894 | */ | |
895 | if(client_p->localClient->passwd) | |
896 | { | |
897 | memset(client_p->localClient->passwd, 0, strlen(client_p->localClient->passwd)); | |
637c4932 | 898 | rb_free(client_p->localClient->passwd); |
212380e3 AC |
899 | client_p->localClient->passwd = NULL; |
900 | } | |
901 | ||
902 | /* Its got identd , since its a server */ | |
903 | SetGotId(client_p); | |
904 | ||
905 | /* If there is something in the serv_list, it might be this | |
906 | * connecting server.. | |
907 | */ | |
908 | if(!ServerInfo.hub && serv_list.head) | |
909 | { | |
910 | if(client_p != serv_list.head->data || serv_list.head->next) | |
911 | { | |
47adde3d | 912 | ServerStats.is_ref++; |
212380e3 AC |
913 | sendto_one(client_p, "ERROR :I'm a leaf not a hub"); |
914 | return exit_client(client_p, client_p, client_p, "I'm a leaf"); | |
915 | } | |
916 | } | |
917 | ||
918 | if(IsUnknown(client_p)) | |
919 | { | |
920 | /* | |
921 | * jdc -- 1. Use EmptyString(), not [0] index reference. | |
922 | * 2. Check ->spasswd, not ->passwd. | |
923 | */ | |
924 | if(!EmptyString(server_p->spasswd)) | |
925 | { | |
cda8e9b8 AC |
926 | sendto_one(client_p, "PASS %s TS %d :%s", |
927 | server_p->spasswd, TS_CURRENT, me.id); | |
212380e3 AC |
928 | } |
929 | ||
930 | /* pass info to new server */ | |
931 | send_capabilities(client_p, default_server_capabs | |
932 | | (ServerConfCompressed(server_p) ? CAP_ZIP_SUPPORTED : 0) | |
933 | | (ServerConfTb(server_p) ? CAP_TB : 0)); | |
934 | ||
935 | sendto_one(client_p, "SERVER %s 1 :%s%s", | |
936 | me.name, | |
937 | ConfigServerHide.hidden ? "(H) " : "", | |
938 | (me.info[0]) ? (me.info) : "IRCers United"); | |
939 | } | |
940 | ||
6c528b8e | 941 | if(!rb_set_buffers(client_p->localClient->F, READBUF_SIZE)) |
825ddf13 | 942 | ilog_error("rb_set_buffers failed for server"); |
212380e3 | 943 | |
c6d72037 | 944 | /* Enable compression now */ |
f4a759c5 VY |
945 | if(IsCapable(client_p, CAP_ZIP)) |
946 | { | |
947 | start_zlib_session(client_p); | |
948 | } | |
8982edb0 | 949 | sendto_one(client_p, "SVINFO %d %d 0 :%ld", TS_CURRENT, TS_MIN, (long int)rb_current_time()); |
212380e3 AC |
950 | |
951 | client_p->servptr = &me; | |
952 | ||
953 | if(IsAnyDead(client_p)) | |
954 | return CLIENT_EXITED; | |
955 | ||
956 | SetServer(client_p); | |
957 | ||
958 | /* Update the capability combination usage counts */ | |
959 | set_chcap_usage_counts(client_p); | |
960 | ||
330fc5c1 | 961 | rb_dlinkAdd(client_p, &client_p->lnode, &me.serv->servers); |
54015b5f | 962 | del_unknown_ip(client_p); |
330fc5c1 AC |
963 | rb_dlinkMoveNode(&client_p->localClient->tnode, &unknown_list, &serv_list); |
964 | rb_dlinkAddTailAlloc(client_p, &global_serv_list); | |
212380e3 AC |
965 | |
966 | if(has_id(client_p)) | |
967 | add_to_id_hash(client_p->id, client_p); | |
968 | ||
969 | add_to_client_hash(client_p->name, client_p); | |
970 | /* doesnt duplicate client_p->serv if allocated this struct already */ | |
971 | make_server(client_p); | |
212380e3 AC |
972 | |
973 | client_p->serv->caps = client_p->localClient->caps; | |
974 | ||
975 | if(client_p->localClient->fullcaps) | |
976 | { | |
47a03750 | 977 | client_p->serv->fullcaps = rb_strdup(client_p->localClient->fullcaps); |
637c4932 | 978 | rb_free(client_p->localClient->fullcaps); |
212380e3 AC |
979 | client_p->localClient->fullcaps = NULL; |
980 | } | |
981 | ||
994544c2 | 982 | client_p->serv->nameinfo = scache_connect(client_p->name, client_p->info, IsHidden(client_p)); |
e3354945 | 983 | client_p->localClient->firsttime = rb_current_time(); |
212380e3 AC |
984 | /* fixing eob timings.. -gnp */ |
985 | ||
330fc5c1 | 986 | if((rb_dlink_list_length(&lclient_list) + rb_dlink_list_length(&serv_list)) > |
2f15f871 | 987 | (unsigned long)MaxConnectionCount) |
330fc5c1 AC |
988 | MaxConnectionCount = rb_dlink_list_length(&lclient_list) + |
989 | rb_dlink_list_length(&serv_list); | |
2f15f871 | 990 | |
212380e3 AC |
991 | /* Show the real host/IP to admins */ |
992 | sendto_realops_snomask(SNO_GENERAL, L_ALL, | |
993 | "Link with %s established: (%s) link", | |
994 | get_server_name(client_p, SHOW_IP), | |
995 | show_capabilities(client_p)); | |
996 | ||
997 | ilog(L_SERVER, "Link with %s established: (%s) link", | |
998 | log_client_name(client_p, SHOW_IP), show_capabilities(client_p)); | |
999 | ||
1000 | hdata.client = &me; | |
1001 | hdata.target = client_p; | |
1002 | call_hook(h_server_introduced, &hdata); | |
1003 | ||
f4a759c5 | 1004 | rb_snprintf(note, sizeof(note), "Server: %s", client_p->name); |
c6d72037 | 1005 | rb_note(client_p->localClient->F, note); |
212380e3 AC |
1006 | |
1007 | /* | |
1008 | ** Old sendto_serv_but_one() call removed because we now | |
1009 | ** need to send different names to different servers | |
1010 | ** (domain name matching) Send new server to other servers. | |
1011 | */ | |
5cefa1d6 | 1012 | RB_DLINK_FOREACH(ptr, serv_list.head) |
212380e3 AC |
1013 | { |
1014 | target_p = ptr->data; | |
1015 | ||
1016 | if(target_p == client_p) | |
1017 | continue; | |
1018 | ||
1019 | if(has_id(target_p) && has_id(client_p)) | |
1020 | { | |
1021 | sendto_one(target_p, ":%s SID %s 2 %s :%s%s", | |
1022 | me.id, client_p->name, client_p->id, | |
1023 | IsHidden(client_p) ? "(H) " : "", client_p->info); | |
1024 | ||
1025 | if(IsCapable(target_p, CAP_ENCAP) && | |
1026 | !EmptyString(client_p->serv->fullcaps)) | |
1027 | sendto_one(target_p, ":%s ENCAP * GCAP :%s", | |
1028 | client_p->id, client_p->serv->fullcaps); | |
1029 | } | |
1030 | else | |
1031 | { | |
1032 | sendto_one(target_p, ":%s SERVER %s 2 :%s%s", | |
1033 | me.name, client_p->name, | |
1034 | IsHidden(client_p) ? "(H) " : "", client_p->info); | |
1035 | ||
1036 | if(IsCapable(target_p, CAP_ENCAP) && | |
1037 | !EmptyString(client_p->serv->fullcaps)) | |
1038 | sendto_one(target_p, ":%s ENCAP * GCAP :%s", | |
1039 | client_p->name, client_p->serv->fullcaps); | |
1040 | } | |
1041 | } | |
1042 | ||
1043 | /* | |
1044 | ** Pass on my client information to the new server | |
1045 | ** | |
1046 | ** First, pass only servers (idea is that if the link gets | |
1047 | ** cancelled beacause the server was already there, | |
1048 | ** there are no NICK's to be cancelled...). Of course, | |
1049 | ** if cancellation occurs, all this info is sent anyway, | |
1050 | ** and I guess the link dies when a read is attempted...? --msa | |
1051 | ** | |
1052 | ** Note: Link cancellation to occur at this point means | |
1053 | ** that at least two servers from my fragment are building | |
1054 | ** up connection this other fragment at the same time, it's | |
1055 | ** a race condition, not the normal way of operation... | |
1056 | ** | |
1057 | ** ALSO NOTE: using the get_client_name for server names-- | |
1058 | ** see previous *WARNING*!!! (Also, original inpath | |
1059 | ** is destroyed...) | |
1060 | */ | |
5cefa1d6 | 1061 | RB_DLINK_FOREACH(ptr, global_serv_list.head) |
212380e3 AC |
1062 | { |
1063 | target_p = ptr->data; | |
1064 | ||
1065 | /* target_p->from == target_p for target_p == client_p */ | |
1066 | if(IsMe(target_p) || target_p->from == client_p) | |
1067 | continue; | |
1068 | ||
1069 | /* presumption, if target has an id, so does its uplink */ | |
1070 | if(has_id(client_p) && has_id(target_p)) | |
1071 | sendto_one(client_p, ":%s SID %s %d %s :%s%s", | |
66c8fdd2 | 1072 | target_p->servptr->id, target_p->name, |
212380e3 AC |
1073 | target_p->hopcount + 1, target_p->id, |
1074 | IsHidden(target_p) ? "(H) " : "", target_p->info); | |
1075 | else | |
1076 | sendto_one(client_p, ":%s SERVER %s %d :%s%s", | |
66c8fdd2 | 1077 | target_p->servptr->name, |
212380e3 AC |
1078 | target_p->name, target_p->hopcount + 1, |
1079 | IsHidden(target_p) ? "(H) " : "", target_p->info); | |
1080 | ||
1081 | if(IsCapable(client_p, CAP_ENCAP) && | |
1082 | !EmptyString(target_p->serv->fullcaps)) | |
1083 | sendto_one(client_p, ":%s ENCAP * GCAP :%s", | |
1084 | get_id(target_p, client_p), | |
1085 | target_p->serv->fullcaps); | |
1086 | } | |
1087 | ||
1088 | if(has_id(client_p)) | |
1089 | burst_TS6(client_p); | |
1090 | else | |
1091 | burst_TS5(client_p); | |
1092 | ||
1093 | /* Always send a PING after connect burst is done */ | |
1094 | sendto_one(client_p, "PING :%s", get_id(&me, client_p)); | |
1095 | ||
1096 | free_pre_client(client_p); | |
1097 | ||
f4a759c5 | 1098 | if (!IsCapable(client_p, CAP_ZIP)) |
c6d72037 | 1099 | send_pop_queue(client_p); |
212380e3 AC |
1100 | |
1101 | return 0; | |
212380e3 AC |
1102 | } |
1103 | ||
1104 | /* | |
1105 | * New server connection code | |
1106 | * Based upon the stuff floating about in s_bsd.c | |
1107 | * -- adrian | |
1108 | */ | |
1109 | ||
abe5dd20 JT |
1110 | static int |
1111 | serv_connect_resolved(struct Client *client_p) | |
1112 | { | |
1113 | struct rb_sockaddr_storage myipnum; | |
1114 | char vhoststr[HOSTIPLEN]; | |
1115 | struct server_conf *server_p; | |
1116 | uint16_t port; | |
1117 | ||
1118 | if((server_p = client_p->localClient->att_sconf) == NULL) | |
1119 | { | |
1120 | sendto_realops_snomask(SNO_GENERAL, is_remote_connect(client_p) ? L_NETWIDE : L_ALL, "Lost connect{} block for %s", | |
1121 | get_server_name(client_p, HIDE_IP)); | |
1122 | exit_client(client_p, client_p, &me, "Lost connect{} block"); | |
1123 | return 0; | |
1124 | } | |
1125 | ||
1126 | #ifdef RB_IPV6 | |
1127 | if(client_p->localClient->ip.ss_family == AF_INET6) | |
1128 | port = ntohs(((struct sockaddr_in6 *)&client_p->localClient->ip)->sin6_port); | |
1129 | else | |
1130 | #endif | |
1131 | port = ntohs(((struct sockaddr_in *)&client_p->localClient->ip)->sin_port); | |
1132 | ||
1133 | if(ServerConfVhosted(server_p)) | |
1134 | { | |
1135 | memcpy(&myipnum, &server_p->my_ipnum, sizeof(myipnum)); | |
1136 | ((struct sockaddr_in *)&myipnum)->sin_port = 0; | |
1137 | myipnum.ss_family = server_p->aftype; | |
1138 | ||
1139 | } | |
1140 | else if(server_p->aftype == AF_INET && ServerInfo.specific_ipv4_vhost) | |
1141 | { | |
1142 | memcpy(&myipnum, &ServerInfo.ip, sizeof(myipnum)); | |
1143 | ((struct sockaddr_in *)&myipnum)->sin_port = 0; | |
1144 | myipnum.ss_family = AF_INET; | |
1145 | SET_SS_LEN(&myipnum, sizeof(struct sockaddr_in)); | |
1146 | } | |
1147 | ||
1148 | #ifdef RB_IPV6 | |
1149 | else if((server_p->aftype == AF_INET6) && ServerInfo.specific_ipv6_vhost) | |
1150 | { | |
1151 | memcpy(&myipnum, &ServerInfo.ip6, sizeof(myipnum)); | |
1152 | ((struct sockaddr_in6 *)&myipnum)->sin6_port = 0; | |
1153 | myipnum.ss_family = AF_INET6; | |
1154 | SET_SS_LEN(&myipnum, sizeof(struct sockaddr_in6)); | |
1155 | } | |
1156 | #endif | |
1157 | else | |
1158 | { | |
1159 | /* log */ | |
1160 | ilog(L_SERVER, "Connecting to %s[%s] port %d (%s)", client_p->name, client_p->sockhost, port, | |
1161 | #ifdef RB_IPV6 | |
1162 | server_p->aftype == AF_INET6 ? "IPv6" : | |
1163 | #endif | |
1164 | (server_p->aftype == AF_INET ? "IPv4" : "?")); | |
1165 | ||
f4a759c5 VY |
1166 | if(ServerConfSSL(server_p)) |
1167 | { | |
1168 | rb_connect_tcp(client_p->localClient->F, (struct sockaddr *)&client_p->localClient->ip, | |
1169 | NULL, 0, serv_connect_ssl_callback, | |
1170 | client_p, ConfigFileEntry.connect_timeout); | |
1171 | } | |
1172 | else | |
1173 | rb_connect_tcp(client_p->localClient->F, (struct sockaddr *)&client_p->localClient->ip, | |
1174 | NULL, 0, serv_connect_callback, | |
c6d72037 | 1175 | client_p, ConfigFileEntry.connect_timeout); |
abe5dd20 JT |
1176 | return 1; |
1177 | } | |
1178 | ||
1179 | /* log */ | |
1180 | inetntop_sock((struct sockaddr *)&myipnum, vhoststr, sizeof vhoststr); | |
1181 | ilog(L_SERVER, "Connecting to %s[%s] port %d (%s) (vhost %s)", client_p->name, client_p->sockhost, port, | |
1182 | #ifdef RB_IPV6 | |
1183 | server_p->aftype == AF_INET6 ? "IPv6" : | |
1184 | #endif | |
1185 | (server_p->aftype == AF_INET ? "IPv4" : "?"), vhoststr); | |
1186 | ||
1187 | ||
f4a759c5 VY |
1188 | if(ServerConfSSL(server_p)) |
1189 | rb_connect_tcp(client_p->localClient->F, (struct sockaddr *)&client_p->localClient->ip, | |
1190 | (struct sockaddr *) &myipnum, | |
1191 | GET_SS_LEN(&myipnum), serv_connect_ssl_callback, client_p, | |
1192 | ConfigFileEntry.connect_timeout); | |
1193 | else | |
1194 | rb_connect_tcp(client_p->localClient->F, (struct sockaddr *)&client_p->localClient->ip, | |
1195 | (struct sockaddr *) &myipnum, | |
1196 | GET_SS_LEN(&myipnum), serv_connect_callback, client_p, | |
c6d72037 | 1197 | ConfigFileEntry.connect_timeout); |
abe5dd20 JT |
1198 | |
1199 | return 1; | |
1200 | } | |
1201 | ||
1202 | static void | |
1203 | serv_connect_dns_callback(void *vptr, struct DNSReply *reply) | |
1204 | { | |
1205 | struct Client *client_p = vptr; | |
1206 | uint16_t port; | |
1207 | ||
1208 | rb_free(client_p->localClient->dnsquery); | |
1209 | client_p->localClient->dnsquery = NULL; | |
1210 | ||
1211 | if (reply == NULL) | |
1212 | { | |
1213 | sendto_realops_snomask(SNO_GENERAL, is_remote_connect(client_p) ? L_NETWIDE : L_ALL, "Cannot resolve hostname for %s", | |
1214 | get_server_name(client_p, HIDE_IP)); | |
1215 | ilog(L_SERVER, "Cannot resolve hostname for %s", | |
1216 | log_client_name(client_p, HIDE_IP)); | |
1217 | exit_client(client_p, client_p, &me, "Cannot resolve hostname"); | |
1218 | return; | |
1219 | } | |
1220 | #ifdef RB_IPV6 | |
1221 | if(reply->addr.ss_family == AF_INET6) | |
1222 | port = ((struct sockaddr_in6 *)&client_p->localClient->ip)->sin6_port; | |
1223 | else | |
1224 | #endif | |
1225 | port = ((struct sockaddr_in *)&client_p->localClient->ip)->sin_port; | |
1226 | memcpy(&client_p->localClient->ip, &reply->addr, sizeof(client_p->localClient->ip)); | |
1227 | #ifdef RB_IPV6 | |
1228 | if(reply->addr.ss_family == AF_INET6) | |
1229 | ((struct sockaddr_in6 *)&client_p->localClient->ip)->sin6_port = port; | |
1230 | else | |
1231 | #endif | |
1232 | ((struct sockaddr_in *)&client_p->localClient->ip)->sin_port = port; | |
1233 | /* Set sockhost properly now -- jilles */ | |
1234 | inetntop_sock((struct sockaddr *)&client_p->localClient->ip, | |
1235 | client_p->sockhost, sizeof client_p->sockhost); | |
1236 | serv_connect_resolved(client_p); | |
1237 | } | |
1238 | ||
212380e3 AC |
1239 | /* |
1240 | * serv_connect() - initiate a server connection | |
1241 | * | |
1242 | * inputs - pointer to conf | |
1243 | * - pointer to client doing the connet | |
1244 | * output - | |
1245 | * side effects - | |
1246 | * | |
1247 | * This code initiates a connection to a server. It first checks to make | |
1248 | * sure the given server exists. If this is the case, it creates a socket, | |
1249 | * creates a client, saves the socket information in the client, and | |
b2f0da88 | 1250 | * initiates a connection to the server through rb_connect_tcp(). The |
212380e3 AC |
1251 | * completion of this goes through serv_completed_connection(). |
1252 | * | |
1253 | * We return 1 if the connection is attempted, since we don't know whether | |
1254 | * it suceeded or not, and 0 if it fails in here somewhere. | |
1255 | */ | |
1256 | int | |
1257 | serv_connect(struct server_conf *server_p, struct Client *by) | |
1258 | { | |
1259 | struct Client *client_p; | |
abe5dd20 | 1260 | struct rb_sockaddr_storage theiripnum; |
6c528b8e | 1261 | rb_fde_t *F; |
6c528b8e | 1262 | char note[HOSTLEN + 10]; |
212380e3 AC |
1263 | |
1264 | s_assert(server_p != NULL); | |
1265 | if(server_p == NULL) | |
1266 | return 0; | |
1267 | ||
1268 | /* | |
1269 | * Make sure this server isn't already connected | |
1270 | */ | |
1271 | if((client_p = find_server(NULL, server_p->name))) | |
1272 | { | |
1273 | sendto_realops_snomask(SNO_GENERAL, L_ALL, | |
1274 | "Server %s already present from %s", | |
1275 | server_p->name, get_server_name(client_p, SHOW_IP)); | |
1276 | if(by && IsPerson(by) && !MyClient(by)) | |
1277 | sendto_one_notice(by, ":Server %s already present from %s", | |
1278 | server_p->name, get_server_name(client_p, SHOW_IP)); | |
1279 | return 0; | |
1280 | } | |
1281 | ||
1282 | /* create a socket for the server connection */ | |
75c58138 | 1283 | if((F = rb_socket(server_p->aftype, SOCK_STREAM, 0, NULL)) == NULL) |
212380e3 | 1284 | { |
825ddf13 | 1285 | ilog_error("opening a stream socket"); |
212380e3 AC |
1286 | return 0; |
1287 | } | |
1288 | ||
6c528b8e JT |
1289 | rb_snprintf(note, sizeof note, "Server: %s", server_p->name); |
1290 | rb_note(F, note); | |
212380e3 AC |
1291 | |
1292 | /* Create a local client */ | |
1293 | client_p = make_client(NULL); | |
1294 | ||
1295 | /* Copy in the server, hostname, fd | |
1296 | * The sockhost may be a hostname, this will be corrected later | |
1297 | * -- jilles | |
1298 | */ | |
1299 | strlcpy(client_p->name, server_p->name, sizeof(client_p->name)); | |
1300 | strlcpy(client_p->host, server_p->host, sizeof(client_p->host)); | |
1301 | strlcpy(client_p->sockhost, server_p->host, sizeof(client_p->sockhost)); | |
6c528b8e | 1302 | client_p->localClient->F = F; |
c6d72037 | 1303 | add_to_cli_fd_hash(client_p); |
212380e3 AC |
1304 | |
1305 | /* | |
1306 | * Set up the initial server evilness, ripped straight from | |
1307 | * connect_server(), so don't blame me for it being evil. | |
1308 | * -- adrian | |
1309 | */ | |
1310 | ||
6c528b8e | 1311 | if(!rb_set_buffers(client_p->localClient->F, READBUF_SIZE)) |
212380e3 | 1312 | { |
825ddf13 | 1313 | ilog_error("setting the buffer size for a server connection"); |
212380e3 AC |
1314 | } |
1315 | ||
1316 | /* | |
1317 | * Attach config entries to client here rather than in | |
1318 | * serv_connect_callback(). This to avoid null pointer references. | |
1319 | */ | |
1320 | attach_server_conf(client_p, server_p); | |
1321 | ||
1322 | /* | |
1323 | * at this point we have a connection in progress and C/N lines | |
1324 | * attached to the client, the socket info should be saved in the | |
1325 | * client and it should either be resolved or have a valid address. | |
1326 | * | |
1327 | * The socket has been connected or connect is in progress. | |
1328 | */ | |
1329 | make_server(client_p); | |
1330 | if(by && IsPerson(by)) | |
1331 | { | |
1332 | strcpy(client_p->serv->by, by->name); | |
1333 | if(client_p->serv->user) | |
1334 | free_user(client_p->serv->user, NULL); | |
1335 | client_p->serv->user = by->user; | |
1336 | by->user->refcnt++; | |
1337 | } | |
1338 | else | |
1339 | { | |
1340 | strcpy(client_p->serv->by, "AutoConn."); | |
1341 | if(client_p->serv->user) | |
1342 | free_user(client_p->serv->user, NULL); | |
1343 | client_p->serv->user = NULL; | |
1344 | } | |
212380e3 | 1345 | SetConnecting(client_p); |
330fc5c1 | 1346 | rb_dlinkAddTail(client_p, &client_p->node, &global_client_list); |
212380e3 | 1347 | |
abe5dd20 | 1348 | if (rb_inet_pton_sock(server_p->host, (struct sockaddr *)&theiripnum) > 0) |
212380e3 | 1349 | { |
abe5dd20 | 1350 | memcpy(&client_p->localClient->ip, &theiripnum, sizeof(client_p->localClient->ip)); |
ccda6e3f | 1351 | #ifdef RB_IPV6 |
abe5dd20 JT |
1352 | if(theiripnum.ss_family == AF_INET6) |
1353 | ((struct sockaddr_in6 *)&client_p->localClient->ip)->sin6_port = htons(server_p->port); | |
1354 | else | |
212380e3 | 1355 | #endif |
abe5dd20 JT |
1356 | ((struct sockaddr_in *)&client_p->localClient->ip)->sin_port = htons(server_p->port); |
1357 | ||
1358 | return serv_connect_resolved(client_p); | |
1359 | } | |
212380e3 AC |
1360 | else |
1361 | { | |
ccda6e3f | 1362 | #ifdef RB_IPV6 |
abe5dd20 JT |
1363 | if(theiripnum.ss_family == AF_INET6) |
1364 | ((struct sockaddr_in6 *)&client_p->localClient->ip)->sin6_port = htons(server_p->port); | |
1365 | else | |
17648928 | 1366 | #endif |
abe5dd20 | 1367 | ((struct sockaddr_in *)&client_p->localClient->ip)->sin_port = htons(server_p->port); |
17648928 | 1368 | |
abe5dd20 JT |
1369 | client_p->localClient->dnsquery = rb_malloc(sizeof(struct DNSQuery)); |
1370 | client_p->localClient->dnsquery->ptr = client_p; | |
1371 | client_p->localClient->dnsquery->callback = serv_connect_dns_callback; | |
1372 | gethost_byname_type(server_p->host, client_p->localClient->dnsquery, | |
ccda6e3f | 1373 | #ifdef RB_IPV6 |
abe5dd20 | 1374 | server_p->aftype == AF_INET6 ? T_AAAA : |
17648928 | 1375 | #endif |
abe5dd20 JT |
1376 | T_A); |
1377 | return 1; | |
1378 | } | |
212380e3 AC |
1379 | } |
1380 | ||
f4a759c5 VY |
1381 | static void |
1382 | serv_connect_ev(void *data) | |
1383 | { | |
1384 | struct Client *client_p = data; | |
1385 | serv_connect_callback(client_p->localClient->F, RB_OK, client_p); | |
c6d72037 VY |
1386 | } |
1387 | ||
f4a759c5 VY |
1388 | static void |
1389 | serv_connect_ssl_callback(rb_fde_t *F, int status, void *data) | |
1390 | { | |
1391 | struct Client *client_p = data; | |
1392 | rb_fde_t *xF[2]; | |
1393 | if(status != RB_OK) | |
1394 | { | |
1395 | /* XXX deal with failure */ | |
1396 | return; | |
1397 | } | |
1398 | rb_connect_sockaddr(F, (struct sockaddr *)&client_p->localClient->ip, sizeof(client_p->localClient->ip)); | |
1399 | rb_socketpair(AF_UNIX, SOCK_STREAM, 0, &xF[0], &xF[1], "Outgoing ssld connection"); | |
1400 | del_from_cli_fd_hash(client_p); | |
1401 | client_p->localClient->F = xF[0]; | |
1402 | add_to_cli_fd_hash(client_p); | |
1403 | ||
1404 | client_p->localClient->ssl_ctl = start_ssld_connect(F, xF[1], rb_get_fd(xF[0])); | |
1405 | SetSSL(client_p); | |
1406 | rb_event_addonce("serv_connect_ev", serv_connect_ev, client_p, 1); | |
c6d72037 VY |
1407 | } |
1408 | ||
212380e3 AC |
1409 | /* |
1410 | * serv_connect_callback() - complete a server connection. | |
1411 | * | |
1412 | * This routine is called after the server connection attempt has | |
1413 | * completed. If unsucessful, an error is sent to ops and the client | |
1414 | * is closed. If sucessful, it goes through the initialisation/check | |
1415 | * procedures, the capabilities are sent, and the socket is then | |
1416 | * marked for reading. | |
1417 | */ | |
1418 | static void | |
6c528b8e | 1419 | serv_connect_callback(rb_fde_t *F, int status, void *data) |
212380e3 AC |
1420 | { |
1421 | struct Client *client_p = data; | |
1422 | struct server_conf *server_p; | |
1423 | char *errstr; | |
1424 | ||
1425 | /* First, make sure its a real client! */ | |
1426 | s_assert(client_p != NULL); | |
6c528b8e | 1427 | s_assert(client_p->localClient->F == F); |
212380e3 AC |
1428 | |
1429 | if(client_p == NULL) | |
1430 | return; | |
1431 | ||
1432 | /* while we were waiting for the callback, its possible this already | |
1433 | * linked in.. --fl | |
1434 | */ | |
1435 | if(find_server(NULL, client_p->name) != NULL) | |
1436 | { | |
1437 | exit_client(client_p, client_p, &me, "Server Exists"); | |
1438 | return; | |
1439 | } | |
1440 | ||
f4a759c5 | 1441 | if(client_p->localClient->ssl_ctl == NULL) |
c6d72037 VY |
1442 | rb_connect_sockaddr(F, (struct sockaddr *)&client_p->localClient->ip, sizeof(client_p->localClient->ip)); |
1443 | ||
212380e3 | 1444 | /* Check the status */ |
6c528b8e | 1445 | if(status != RB_OK) |
212380e3 AC |
1446 | { |
1447 | /* COMM_ERR_TIMEOUT wont have an errno associated with it, | |
1448 | * the others will.. --fl | |
1449 | */ | |
6c528b8e | 1450 | if(status == RB_ERR_TIMEOUT) |
212380e3 AC |
1451 | { |
1452 | sendto_realops_snomask(SNO_GENERAL, is_remote_connect(client_p) ? L_NETWIDE : L_ALL, | |
1453 | "Error connecting to %s[%s]: %s", | |
1454 | client_p->name, | |
1455 | #ifdef HIDE_SERVERS_IPS | |
1456 | "255.255.255.255", | |
1457 | #else | |
1458 | client_p->host, | |
1459 | #endif | |
b2f0da88 | 1460 | rb_errstr(status)); |
212380e3 AC |
1461 | ilog(L_SERVER, "Error connecting to %s[%s]: %s", |
1462 | client_p->name, client_p->sockhost, | |
b2f0da88 | 1463 | rb_errstr(status)); |
212380e3 AC |
1464 | } |
1465 | else | |
1466 | { | |
6c528b8e | 1467 | errstr = strerror(rb_get_sockerr(F)); |
212380e3 AC |
1468 | sendto_realops_snomask(SNO_GENERAL, is_remote_connect(client_p) ? L_NETWIDE : L_ALL, |
1469 | "Error connecting to %s[%s]: %s (%s)", | |
1470 | client_p->name, | |
1471 | #ifdef HIDE_SERVERS_IPS | |
1472 | "255.255.255.255", | |
1473 | #else | |
1474 | client_p->host, | |
1475 | #endif | |
b2f0da88 | 1476 | rb_errstr(status), errstr); |
212380e3 AC |
1477 | ilog(L_SERVER, "Error connecting to %s[%s]: %s (%s)", |
1478 | client_p->name, client_p->sockhost, | |
b2f0da88 | 1479 | rb_errstr(status), errstr); |
212380e3 AC |
1480 | } |
1481 | ||
b2f0da88 | 1482 | exit_client(client_p, client_p, &me, rb_errstr(status)); |
212380e3 AC |
1483 | return; |
1484 | } | |
1485 | ||
1486 | /* COMM_OK, so continue the connection procedure */ | |
1487 | /* Get the C/N lines */ | |
1488 | if((server_p = client_p->localClient->att_sconf) == NULL) | |
1489 | { | |
1490 | sendto_realops_snomask(SNO_GENERAL, is_remote_connect(client_p) ? L_NETWIDE : L_ALL, "Lost connect{} block for %s", | |
1491 | get_server_name(client_p, HIDE_IP)); | |
1492 | exit_client(client_p, client_p, &me, "Lost connect{} block"); | |
1493 | return; | |
1494 | } | |
1495 | ||
1496 | /* Next, send the initial handshake */ | |
1497 | SetHandshake(client_p); | |
1498 | ||
1499 | /* kludge, if we're not using TS6, dont ever send | |
1500 | * ourselves as being TS6 capable. | |
1501 | */ | |
1502 | if(!EmptyString(server_p->spasswd)) | |
1503 | { | |
cda8e9b8 AC |
1504 | sendto_one(client_p, "PASS %s TS %d :%s", |
1505 | server_p->spasswd, TS_CURRENT, me.id); | |
212380e3 AC |
1506 | } |
1507 | ||
1508 | /* pass my info to the new server */ | |
1509 | send_capabilities(client_p, default_server_capabs | |
1510 | | (ServerConfCompressed(server_p) ? CAP_ZIP_SUPPORTED : 0) | |
1511 | | (ServerConfTb(server_p) ? CAP_TB : 0)); | |
1512 | ||
1513 | sendto_one(client_p, "SERVER %s 1 :%s%s", | |
1514 | me.name, | |
1515 | ConfigServerHide.hidden ? "(H) " : "", me.info); | |
1516 | ||
1517 | /* | |
1518 | * If we've been marked dead because a send failed, just exit | |
1519 | * here now and save everyone the trouble of us ever existing. | |
1520 | */ | |
1521 | if(IsAnyDead(client_p)) | |
1522 | { | |
1523 | sendto_realops_snomask(SNO_GENERAL, is_remote_connect(client_p) ? L_NETWIDE : L_ALL, | |
1524 | "%s went dead during handshake", client_p->name); | |
1525 | exit_client(client_p, client_p, &me, "Went dead during handshake"); | |
1526 | return; | |
1527 | } | |
1528 | ||
1529 | /* don't move to serv_list yet -- we haven't sent a burst! */ | |
1530 | ||
1531 | /* If we get here, we're ok, so lets start reading some data */ | |
6c528b8e | 1532 | read_packet(F, client_p); |
212380e3 AC |
1533 | } |
1534 | ||
1535 | #ifndef HAVE_SOCKETPAIR | |
1536 | static int | |
1537 | inet_socketpair(int d, int type, int protocol, int sv[2]) | |
1538 | { | |
1539 | struct sockaddr_in addr1, addr2, addr3; | |
1540 | int addr3_len = sizeof(addr3); | |
1541 | int fd, rc; | |
1542 | int port_no = 20000; | |
1543 | ||
1544 | if(d != AF_INET || type != SOCK_STREAM || protocol) | |
1545 | { | |
1546 | errno = EAFNOSUPPORT; | |
1547 | return -1; | |
1548 | } | |
1549 | if(((sv[0] = socket(AF_INET, SOCK_STREAM, 0)) < 0) || ((sv[1] = socket(AF_INET, SOCK_STREAM, 0)) < 0)) | |
1550 | return -1; | |
1551 | ||
1552 | addr1.sin_port = htons(port_no); | |
1553 | addr1.sin_family = AF_INET; | |
1554 | addr1.sin_addr.s_addr = htonl(INADDR_LOOPBACK); | |
1555 | while ((rc = bind (sv[0], (struct sockaddr *) &addr1, sizeof (addr1))) < 0 && errno == EADDRINUSE) | |
1556 | addr1.sin_port = htons(++port_no); | |
1557 | ||
1558 | if(rc < 0) | |
1559 | return -1; | |
1560 | ||
1561 | if(listen(sv[0], 1) < 0) | |
1562 | { | |
1563 | close(sv[0]); | |
1564 | close(sv[1]); | |
1565 | return -1; | |
1566 | } | |
1567 | ||
1568 | addr2.sin_port = htons(port_no); | |
1569 | addr2.sin_family = AF_INET; | |
1570 | addr2.sin_addr.s_addr = htonl(INADDR_LOOPBACK); | |
1571 | if(connect (sv[1], (struct sockaddr *) &addr2, sizeof (addr2)) < 0) | |
1572 | { | |
1573 | close(sv[0]); | |
1574 | close(sv[1]); | |
1575 | return -1; | |
1576 | } | |
1577 | ||
1578 | if((fd = accept(sv[1], (struct sockaddr *) &addr3, &addr3_len)) < 0) | |
1579 | { | |
1580 | close(sv[0]); | |
1581 | close(sv[1]); | |
1582 | return -1; | |
1583 | } | |
1584 | close(sv[0]); | |
1585 | sv[0] = fd; | |
1586 | ||
1587 | return(0); | |
1588 | ||
1589 | } | |
1590 | #endif |