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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}, | |
87 | { "GLN", CAP_GLN}, | |
88 | { "KNOCK", CAP_KNOCK}, | |
89 | { "ZIP", CAP_ZIP}, | |
90 | { "TB", CAP_TB}, | |
91 | { "UNKLN", CAP_UNKLN}, | |
92 | { "CLUSTER", CAP_CLUSTER}, | |
93 | { "ENCAP", CAP_ENCAP }, | |
94 | { "SERVICES", CAP_SERVICE }, | |
95 | { "RSFNC", CAP_RSFNC }, | |
96 | { "SAVE", CAP_SAVE }, | |
97 | { "EUID", CAP_EUID }, | |
98 | {0, 0} | |
99 | }; | |
100 | ||
212380e3 | 101 | static CNCB serv_connect_callback; |
c6d72037 | 102 | static CNCB serv_connect_ssl_callback; |
212380e3 AC |
103 | |
104 | /* | |
105 | * hunt_server - Do the basic thing in delivering the message (command) | |
106 | * across the relays to the specific server (server) for | |
107 | * actions. | |
108 | * | |
109 | * Note: The command is a format string and *MUST* be | |
110 | * of prefixed style (e.g. ":%s COMMAND %s ..."). | |
111 | * Command can have only max 8 parameters. | |
112 | * | |
113 | * server parv[server] is the parameter identifying the | |
114 | * target server. | |
115 | * | |
116 | * *WARNING* | |
117 | * parv[server] is replaced with the pointer to the | |
118 | * real servername from the matched client (I'm lazy | |
119 | * now --msa). | |
120 | * | |
121 | * returns: (see #defines) | |
122 | */ | |
123 | int | |
124 | hunt_server(struct Client *client_p, struct Client *source_p, | |
125 | const char *command, int server, int parc, const char *parv[]) | |
126 | { | |
127 | struct Client *target_p; | |
128 | int wilds; | |
330fc5c1 | 129 | rb_dlink_node *ptr; |
212380e3 AC |
130 | const char *old; |
131 | char *new; | |
132 | ||
133 | /* | |
134 | * Assume it's me, if no server | |
135 | */ | |
136 | if(parc <= server || EmptyString(parv[server]) || | |
4d7a1ee5 | 137 | match(parv[server], me.name) || (strcmp(parv[server], me.id) == 0)) |
212380e3 AC |
138 | return (HUNTED_ISME); |
139 | ||
140 | new = LOCAL_COPY(parv[server]); | |
141 | ||
142 | /* | |
143 | * These are to pickup matches that would cause the following | |
144 | * message to go in the wrong direction while doing quick fast | |
145 | * non-matching lookups. | |
146 | */ | |
147 | if(MyClient(source_p)) | |
148 | target_p = find_named_client(new); | |
149 | else | |
150 | target_p = find_client(new); | |
151 | ||
152 | if(target_p) | |
153 | if(target_p->from == source_p->from && !MyConnect(target_p)) | |
154 | target_p = NULL; | |
155 | ||
212380e3 AC |
156 | collapse(new); |
157 | wilds = (strchr(new, '?') || strchr(new, '*')); | |
158 | ||
159 | /* | |
160 | * Again, if there are no wild cards involved in the server | |
161 | * name, use the hash lookup | |
162 | */ | |
163 | if(!target_p) | |
164 | { | |
165 | if(!wilds) | |
166 | { | |
167 | if(MyClient(source_p) || !IsDigit(parv[server][0])) | |
168 | sendto_one_numeric(source_p, ERR_NOSUCHSERVER, | |
169 | form_str(ERR_NOSUCHSERVER), | |
170 | parv[server]); | |
171 | return (HUNTED_NOSUCH); | |
172 | } | |
173 | else | |
174 | { | |
175 | target_p = NULL; | |
176 | ||
5cefa1d6 | 177 | RB_DLINK_FOREACH(ptr, global_client_list.head) |
212380e3 AC |
178 | { |
179 | if(match(new, ((struct Client *) (ptr->data))->name)) | |
180 | { | |
181 | target_p = ptr->data; | |
182 | break; | |
183 | } | |
184 | } | |
185 | } | |
186 | } | |
187 | ||
188 | if(target_p) | |
189 | { | |
190 | if(!IsRegistered(target_p)) | |
191 | { | |
192 | sendto_one_numeric(source_p, ERR_NOSUCHSERVER, | |
193 | form_str(ERR_NOSUCHSERVER), | |
194 | parv[server]); | |
195 | return HUNTED_NOSUCH; | |
196 | } | |
197 | ||
198 | if(IsMe(target_p) || MyClient(target_p)) | |
199 | return HUNTED_ISME; | |
200 | ||
201 | old = parv[server]; | |
202 | parv[server] = get_id(target_p, target_p); | |
203 | ||
204 | sendto_one(target_p, command, get_id(source_p, target_p), | |
205 | parv[1], parv[2], parv[3], parv[4], parv[5], parv[6], parv[7], parv[8]); | |
206 | parv[server] = old; | |
207 | return (HUNTED_PASS); | |
208 | } | |
209 | ||
95d36ef5 | 210 | if(MyClient(source_p) || !IsDigit(parv[server][0])) |
212380e3 AC |
211 | sendto_one_numeric(source_p, ERR_NOSUCHSERVER, |
212 | form_str(ERR_NOSUCHSERVER), parv[server]); | |
213 | return (HUNTED_NOSUCH); | |
214 | } | |
215 | ||
216 | /* | |
217 | * try_connections - scan through configuration and try new connections. | |
218 | * Returns the calendar time when the next call to this | |
219 | * function should be made latest. (No harm done if this | |
220 | * is called earlier or later...) | |
221 | */ | |
222 | void | |
223 | try_connections(void *unused) | |
224 | { | |
225 | struct Client *client_p; | |
226 | struct server_conf *server_p = NULL; | |
227 | struct server_conf *tmp_p; | |
228 | struct Class *cltmp; | |
330fc5c1 | 229 | rb_dlink_node *ptr; |
212380e3 AC |
230 | int connecting = FALSE; |
231 | int confrq = 0; | |
232 | time_t next = 0; | |
233 | ||
5cefa1d6 | 234 | RB_DLINK_FOREACH(ptr, server_conf_list.head) |
212380e3 AC |
235 | { |
236 | tmp_p = ptr->data; | |
237 | ||
238 | if(ServerConfIllegal(tmp_p) || !ServerConfAutoconn(tmp_p)) | |
239 | continue; | |
240 | ||
f4a759c5 VY |
241 | /* don't allow ssl connections if ssl isn't setup */ |
242 | if(ServerConfSSL(tmp_p) && (!ssl_ok || !get_ssld_count())) | |
c6d72037 VY |
243 | continue; |
244 | ||
212380e3 AC |
245 | cltmp = tmp_p->class; |
246 | ||
247 | /* | |
248 | * Skip this entry if the use of it is still on hold until | |
249 | * future. Otherwise handle this entry (and set it on hold | |
250 | * until next time). Will reset only hold times, if already | |
251 | * made one successfull connection... [this algorithm is | |
252 | * a bit fuzzy... -- msa >;) ] | |
253 | */ | |
e3354945 | 254 | if(tmp_p->hold > rb_current_time()) |
212380e3 AC |
255 | { |
256 | if(next > tmp_p->hold || next == 0) | |
257 | next = tmp_p->hold; | |
258 | continue; | |
259 | } | |
260 | ||
261 | confrq = get_con_freq(cltmp); | |
e3354945 | 262 | tmp_p->hold = rb_current_time() + confrq; |
212380e3 AC |
263 | |
264 | /* | |
265 | * Found a CONNECT config with port specified, scan clients | |
266 | * and see if this server is already connected? | |
267 | */ | |
268 | client_p = find_server(NULL, tmp_p->name); | |
269 | ||
270 | if(!client_p && (CurrUsers(cltmp) < MaxUsers(cltmp)) && !connecting) | |
271 | { | |
272 | server_p = tmp_p; | |
273 | ||
274 | /* We connect only one at time... */ | |
275 | connecting = TRUE; | |
276 | } | |
277 | ||
278 | if((next > tmp_p->hold) || (next == 0)) | |
279 | next = tmp_p->hold; | |
280 | } | |
281 | ||
282 | /* TODO: change this to set active flag to 0 when added to event! --Habeeb */ | |
283 | if(GlobalSetOptions.autoconn == 0) | |
284 | return; | |
285 | ||
286 | if(!connecting) | |
287 | return; | |
288 | ||
289 | /* move this connect entry to end.. */ | |
330fc5c1 AC |
290 | rb_dlinkDelete(&server_p->node, &server_conf_list); |
291 | rb_dlinkAddTail(server_p, &server_p->node, &server_conf_list); | |
212380e3 AC |
292 | |
293 | /* | |
294 | * We used to only print this if serv_connect() actually | |
b2f0da88 | 295 | * suceeded, but since rb_tcp_connect() can call the callback |
212380e3 AC |
296 | * immediately if there is an error, we were getting error messages |
297 | * in the wrong order. SO, we just print out the activated line, | |
298 | * and let serv_connect() / serv_connect_callback() print an | |
299 | * error afterwards if it fails. | |
300 | * -- adrian | |
301 | */ | |
302 | #ifndef HIDE_SERVERS_IPS | |
303 | sendto_realops_snomask(SNO_GENERAL, L_ALL, | |
304 | "Connection to %s[%s] activated.", | |
305 | server_p->name, server_p->host); | |
306 | #else | |
307 | sendto_realops_snomask(SNO_GENERAL, L_ALL, | |
308 | "Connection to %s activated", | |
309 | server_p->name); | |
310 | #endif | |
311 | ||
312 | serv_connect(server_p, 0); | |
313 | } | |
314 | ||
315 | int | |
316 | check_server(const char *name, struct Client *client_p) | |
317 | { | |
318 | struct server_conf *server_p = NULL; | |
319 | struct server_conf *tmp_p; | |
330fc5c1 | 320 | rb_dlink_node *ptr; |
212380e3 AC |
321 | int error = -1; |
322 | ||
323 | s_assert(NULL != client_p); | |
324 | if(client_p == NULL) | |
325 | return error; | |
326 | ||
327 | if(!(client_p->localClient->passwd)) | |
328 | return -2; | |
329 | ||
330 | if(strlen(name) > HOSTLEN) | |
331 | return -4; | |
332 | ||
5cefa1d6 | 333 | RB_DLINK_FOREACH(ptr, server_conf_list.head) |
212380e3 AC |
334 | { |
335 | tmp_p = ptr->data; | |
336 | ||
337 | if(ServerConfIllegal(tmp_p)) | |
338 | continue; | |
339 | ||
340 | if(!match(tmp_p->name, name)) | |
341 | continue; | |
342 | ||
343 | error = -3; | |
344 | ||
345 | /* XXX: Fix me for IPv6 */ | |
346 | /* XXX sockhost is the IPv4 ip as a string */ | |
347 | if(match(tmp_p->host, client_p->host) || | |
348 | match(tmp_p->host, client_p->sockhost)) | |
349 | { | |
350 | error = -2; | |
351 | ||
352 | if(ServerConfEncrypted(tmp_p)) | |
353 | { | |
354 | if(!strcmp(tmp_p->passwd, crypt(client_p->localClient->passwd, | |
355 | tmp_p->passwd))) | |
356 | { | |
357 | server_p = tmp_p; | |
358 | break; | |
359 | } | |
360 | } | |
361 | else if(!strcmp(tmp_p->passwd, client_p->localClient->passwd)) | |
362 | { | |
363 | server_p = tmp_p; | |
364 | break; | |
365 | } | |
366 | } | |
367 | } | |
368 | ||
369 | if(server_p == NULL) | |
370 | return error; | |
371 | ||
f4a759c5 VY |
372 | if(ServerConfSSL(server_p) && client_p->localClient->ssl_ctl == NULL) |
373 | { | |
374 | return -5; | |
c6d72037 VY |
375 | } |
376 | ||
212380e3 AC |
377 | attach_server_conf(client_p, server_p); |
378 | ||
379 | /* clear ZIP/TB if they support but we dont want them */ | |
380 | #ifdef HAVE_LIBZ | |
381 | if(!ServerConfCompressed(server_p)) | |
382 | #endif | |
383 | ClearCap(client_p, CAP_ZIP); | |
384 | ||
385 | if(!ServerConfTb(server_p)) | |
386 | ClearCap(client_p, CAP_TB); | |
387 | ||
388 | return 0; | |
389 | } | |
390 | ||
391 | /* | |
392 | * send_capabilities | |
393 | * | |
394 | * inputs - Client pointer to send to | |
395 | * - int flag of capabilities that this server has | |
396 | * output - NONE | |
397 | * side effects - send the CAPAB line to a server -orabidoo | |
398 | * | |
399 | */ | |
400 | void | |
401 | send_capabilities(struct Client *client_p, int cap_can_send) | |
402 | { | |
403 | struct Capability *cap; | |
404 | char msgbuf[BUFSIZE]; | |
405 | char *t; | |
406 | int tl; | |
407 | ||
408 | t = msgbuf; | |
409 | ||
410 | for (cap = captab; cap->name; ++cap) | |
411 | { | |
412 | if(cap->cap & cap_can_send) | |
413 | { | |
b2f0da88 | 414 | tl = rb_sprintf(t, "%s ", cap->name); |
212380e3 AC |
415 | t += tl; |
416 | } | |
417 | } | |
418 | ||
419 | t--; | |
420 | *t = '\0'; | |
421 | ||
422 | sendto_one(client_p, "CAPAB :%s", msgbuf); | |
423 | } | |
424 | ||
425 | /* burst_modes_TS5() | |
426 | * | |
427 | * input - client to burst to, channel name, list to burst, mode flag | |
428 | * output - | |
429 | * side effects - client is sent a list of +b, or +e, or +I modes | |
430 | */ | |
431 | static void | |
330fc5c1 | 432 | burst_modes_TS5(struct Client *client_p, char *chname, rb_dlink_list *list, char flag) |
212380e3 | 433 | { |
330fc5c1 | 434 | rb_dlink_node *ptr; |
212380e3 AC |
435 | struct Ban *banptr; |
436 | char mbuf[MODEBUFLEN]; | |
437 | char pbuf[BUFSIZE]; | |
438 | int tlen; | |
439 | int mlen; | |
440 | int cur_len; | |
441 | char *mp; | |
442 | char *pp; | |
443 | int count = 0; | |
444 | ||
b2f0da88 | 445 | mlen = rb_sprintf(buf, ":%s MODE %s +", me.name, chname); |
212380e3 AC |
446 | cur_len = mlen; |
447 | ||
448 | mp = mbuf; | |
449 | pp = pbuf; | |
450 | ||
5cefa1d6 | 451 | RB_DLINK_FOREACH(ptr, list->head) |
212380e3 AC |
452 | { |
453 | banptr = ptr->data; | |
454 | tlen = strlen(banptr->banstr) + 3; | |
455 | ||
456 | /* uh oh */ | |
457 | if(tlen > MODEBUFLEN) | |
458 | continue; | |
459 | ||
460 | if((count >= MAXMODEPARAMS) || ((cur_len + tlen + 2) > (BUFSIZE - 3))) | |
461 | { | |
462 | sendto_one(client_p, "%s%s %s", buf, mbuf, pbuf); | |
463 | ||
464 | mp = mbuf; | |
465 | pp = pbuf; | |
466 | cur_len = mlen; | |
467 | count = 0; | |
468 | } | |
469 | ||
470 | *mp++ = flag; | |
471 | *mp = '\0'; | |
b2f0da88 | 472 | pp += rb_sprintf(pp, "%s ", banptr->banstr); |
212380e3 AC |
473 | cur_len += tlen; |
474 | count++; | |
475 | } | |
476 | ||
477 | if(count != 0) | |
478 | sendto_one(client_p, "%s%s %s", buf, mbuf, pbuf); | |
479 | } | |
480 | ||
481 | /* burst_modes_TS6() | |
482 | * | |
483 | * input - client to burst to, channel name, list to burst, mode flag | |
484 | * output - | |
485 | * side effects - client is sent a list of +b, +e, or +I modes | |
486 | */ | |
487 | static void | |
488 | burst_modes_TS6(struct Client *client_p, struct Channel *chptr, | |
330fc5c1 | 489 | rb_dlink_list *list, char flag) |
212380e3 | 490 | { |
330fc5c1 | 491 | rb_dlink_node *ptr; |
212380e3 AC |
492 | struct Ban *banptr; |
493 | char *t; | |
494 | int tlen; | |
495 | int mlen; | |
496 | int cur_len; | |
497 | ||
b2f0da88 | 498 | cur_len = mlen = rb_sprintf(buf, ":%s BMASK %ld %s %c :", |
212380e3 AC |
499 | me.id, (long) chptr->channelts, chptr->chname, flag); |
500 | t = buf + mlen; | |
501 | ||
5cefa1d6 | 502 | RB_DLINK_FOREACH(ptr, list->head) |
212380e3 AC |
503 | { |
504 | banptr = ptr->data; | |
505 | ||
506 | tlen = strlen(banptr->banstr) + 1; | |
507 | ||
508 | /* uh oh */ | |
509 | if(cur_len + tlen > BUFSIZE - 3) | |
510 | { | |
511 | /* the one we're trying to send doesnt fit at all! */ | |
512 | if(cur_len == mlen) | |
513 | { | |
514 | s_assert(0); | |
515 | continue; | |
516 | } | |
517 | ||
518 | /* chop off trailing space and send.. */ | |
519 | *(t-1) = '\0'; | |
520 | sendto_one(client_p, "%s", buf); | |
521 | cur_len = mlen; | |
522 | t = buf + mlen; | |
523 | } | |
524 | ||
b2f0da88 | 525 | rb_sprintf(t, "%s ", banptr->banstr); |
212380e3 AC |
526 | t += tlen; |
527 | cur_len += tlen; | |
528 | } | |
529 | ||
530 | /* cant ever exit the loop above without having modified buf, | |
531 | * chop off trailing space and send. | |
532 | */ | |
533 | *(t-1) = '\0'; | |
534 | sendto_one(client_p, "%s", buf); | |
535 | } | |
536 | ||
537 | /* | |
538 | * burst_TS5 | |
539 | * | |
540 | * inputs - client (server) to send nick towards | |
541 | * - client to send nick for | |
542 | * output - NONE | |
543 | * side effects - NICK message is sent towards given client_p | |
544 | */ | |
545 | static void | |
546 | burst_TS5(struct Client *client_p) | |
547 | { | |
548 | static char ubuf[12]; | |
549 | struct Client *target_p; | |
550 | struct Channel *chptr; | |
551 | struct membership *msptr; | |
552 | hook_data_client hclientinfo; | |
553 | hook_data_channel hchaninfo; | |
330fc5c1 AC |
554 | rb_dlink_node *ptr; |
555 | rb_dlink_node *uptr; | |
212380e3 AC |
556 | char *t; |
557 | int tlen, mlen; | |
558 | int cur_len = 0; | |
559 | ||
560 | hclientinfo.client = hchaninfo.client = client_p; | |
561 | ||
5cefa1d6 | 562 | RB_DLINK_FOREACH(ptr, global_client_list.head) |
212380e3 AC |
563 | { |
564 | target_p = ptr->data; | |
565 | ||
566 | if(!IsPerson(target_p)) | |
567 | continue; | |
568 | ||
569 | send_umode(NULL, target_p, 0, 0, ubuf); | |
570 | if(!*ubuf) | |
571 | { | |
572 | ubuf[0] = '+'; | |
573 | ubuf[1] = '\0'; | |
574 | } | |
575 | ||
576 | sendto_one(client_p, "NICK %s %d %ld %s %s %s %s :%s", | |
577 | target_p->name, target_p->hopcount + 1, | |
578 | (long) target_p->tsinfo, ubuf, | |
579 | target_p->username, target_p->host, | |
c88cdb00 | 580 | target_p->servptr->name, target_p->info); |
212380e3 AC |
581 | |
582 | if(IsDynSpoof(target_p)) | |
583 | sendto_one(client_p, ":%s ENCAP * REALHOST %s", | |
584 | target_p->name, target_p->orighost); | |
585 | if(!EmptyString(target_p->user->suser)) | |
586 | sendto_one(client_p, ":%s ENCAP * LOGIN %s", | |
587 | target_p->name, target_p->user->suser); | |
588 | ||
589 | if(ConfigFileEntry.burst_away && !EmptyString(target_p->user->away)) | |
590 | sendto_one(client_p, ":%s AWAY :%s", | |
591 | target_p->name, target_p->user->away); | |
592 | ||
593 | hclientinfo.target = target_p; | |
594 | call_hook(h_burst_client, &hclientinfo); | |
595 | } | |
596 | ||
5cefa1d6 | 597 | RB_DLINK_FOREACH(ptr, global_channel_list.head) |
212380e3 AC |
598 | { |
599 | chptr = ptr->data; | |
600 | ||
601 | if(*chptr->chname != '#') | |
602 | continue; | |
603 | ||
b2f0da88 | 604 | cur_len = mlen = rb_sprintf(buf, ":%s SJOIN %ld %s %s :", me.name, |
212380e3 AC |
605 | (long) chptr->channelts, chptr->chname, |
606 | channel_modes(chptr, client_p)); | |
607 | ||
608 | t = buf + mlen; | |
609 | ||
5cefa1d6 | 610 | RB_DLINK_FOREACH(uptr, chptr->members.head) |
212380e3 AC |
611 | { |
612 | msptr = uptr->data; | |
613 | ||
614 | tlen = strlen(msptr->client_p->name) + 1; | |
615 | if(is_chanop(msptr)) | |
616 | tlen++; | |
617 | if(is_voiced(msptr)) | |
618 | tlen++; | |
619 | ||
620 | if(cur_len + tlen >= BUFSIZE - 3) | |
621 | { | |
622 | t--; | |
623 | *t = '\0'; | |
624 | sendto_one(client_p, "%s", buf); | |
625 | cur_len = mlen; | |
626 | t = buf + mlen; | |
627 | } | |
628 | ||
b2f0da88 | 629 | rb_sprintf(t, "%s%s ", find_channel_status(msptr, 1), |
212380e3 AC |
630 | msptr->client_p->name); |
631 | ||
632 | cur_len += tlen; | |
633 | t += tlen; | |
634 | } | |
635 | ||
330fc5c1 | 636 | if (rb_dlink_list_length(&chptr->members) > 0) |
212380e3 AC |
637 | { |
638 | /* remove trailing space */ | |
639 | t--; | |
640 | *t = '\0'; | |
641 | } | |
642 | sendto_one(client_p, "%s", buf); | |
643 | ||
644 | burst_modes_TS5(client_p, chptr->chname, &chptr->banlist, 'b'); | |
645 | ||
646 | if(IsCapable(client_p, CAP_EX)) | |
647 | burst_modes_TS5(client_p, chptr->chname, &chptr->exceptlist, 'e'); | |
648 | ||
649 | if(IsCapable(client_p, CAP_IE)) | |
650 | burst_modes_TS5(client_p, chptr->chname, &chptr->invexlist, 'I'); | |
651 | ||
652 | burst_modes_TS5(client_p, chptr->chname, &chptr->quietlist, 'q'); | |
653 | ||
654 | if(IsCapable(client_p, CAP_TB) && chptr->topic != NULL) | |
655 | sendto_one(client_p, ":%s TB %s %ld %s%s:%s", | |
656 | me.name, chptr->chname, (long) chptr->topic_time, | |
657 | ConfigChannel.burst_topicwho ? chptr->topic_info : "", | |
658 | ConfigChannel.burst_topicwho ? " " : "", | |
659 | chptr->topic); | |
660 | ||
661 | hchaninfo.chptr = chptr; | |
662 | call_hook(h_burst_channel, &hchaninfo); | |
663 | } | |
664 | ||
665 | hclientinfo.target = NULL; | |
666 | call_hook(h_burst_finished, &hclientinfo); | |
667 | } | |
668 | ||
669 | /* | |
670 | * burst_TS6 | |
671 | * | |
672 | * inputs - client (server) to send nick towards | |
673 | * - client to send nick for | |
674 | * output - NONE | |
675 | * side effects - NICK message is sent towards given client_p | |
676 | */ | |
677 | static void | |
678 | burst_TS6(struct Client *client_p) | |
679 | { | |
680 | static char ubuf[12]; | |
681 | struct Client *target_p; | |
682 | struct Channel *chptr; | |
683 | struct membership *msptr; | |
684 | hook_data_client hclientinfo; | |
685 | hook_data_channel hchaninfo; | |
330fc5c1 AC |
686 | rb_dlink_node *ptr; |
687 | rb_dlink_node *uptr; | |
212380e3 AC |
688 | char *t; |
689 | int tlen, mlen; | |
690 | int cur_len = 0; | |
691 | ||
692 | hclientinfo.client = hchaninfo.client = client_p; | |
693 | ||
5cefa1d6 | 694 | RB_DLINK_FOREACH(ptr, global_client_list.head) |
212380e3 AC |
695 | { |
696 | target_p = ptr->data; | |
697 | ||
698 | if(!IsPerson(target_p)) | |
699 | continue; | |
700 | ||
701 | send_umode(NULL, target_p, 0, 0, ubuf); | |
702 | if(!*ubuf) | |
703 | { | |
704 | ubuf[0] = '+'; | |
705 | ubuf[1] = '\0'; | |
706 | } | |
707 | ||
708 | if(has_id(target_p) && IsCapable(client_p, CAP_EUID)) | |
709 | sendto_one(client_p, ":%s EUID %s %d %ld %s %s %s %s %s %s %s :%s", | |
710 | target_p->servptr->id, target_p->name, | |
711 | target_p->hopcount + 1, | |
712 | (long) target_p->tsinfo, ubuf, | |
713 | target_p->username, target_p->host, | |
714 | IsIPSpoof(target_p) ? "0" : target_p->sockhost, | |
715 | target_p->id, | |
716 | IsDynSpoof(target_p) ? target_p->orighost : "*", | |
717 | EmptyString(target_p->user->suser) ? "*" : target_p->user->suser, | |
718 | target_p->info); | |
719 | else if(has_id(target_p)) | |
720 | sendto_one(client_p, ":%s UID %s %d %ld %s %s %s %s %s :%s", | |
721 | target_p->servptr->id, target_p->name, | |
722 | target_p->hopcount + 1, | |
723 | (long) target_p->tsinfo, ubuf, | |
724 | target_p->username, target_p->host, | |
725 | IsIPSpoof(target_p) ? "0" : target_p->sockhost, | |
726 | target_p->id, target_p->info); | |
727 | else | |
728 | sendto_one(client_p, "NICK %s %d %ld %s %s %s %s :%s", | |
729 | target_p->name, | |
730 | target_p->hopcount + 1, | |
731 | (long) target_p->tsinfo, | |
732 | ubuf, | |
733 | target_p->username, target_p->host, | |
c88cdb00 | 734 | target_p->servptr->name, target_p->info); |
212380e3 AC |
735 | |
736 | if(!has_id(target_p) || !IsCapable(client_p, CAP_EUID)) | |
737 | { | |
738 | if(IsDynSpoof(target_p)) | |
739 | sendto_one(client_p, ":%s ENCAP * REALHOST %s", | |
740 | use_id(target_p), target_p->orighost); | |
741 | if(!EmptyString(target_p->user->suser)) | |
742 | sendto_one(client_p, ":%s ENCAP * LOGIN %s", | |
743 | use_id(target_p), target_p->user->suser); | |
744 | } | |
745 | ||
746 | if(ConfigFileEntry.burst_away && !EmptyString(target_p->user->away)) | |
747 | sendto_one(client_p, ":%s AWAY :%s", | |
748 | use_id(target_p), | |
749 | target_p->user->away); | |
750 | ||
751 | hclientinfo.target = target_p; | |
752 | call_hook(h_burst_client, &hclientinfo); | |
753 | } | |
754 | ||
5cefa1d6 | 755 | RB_DLINK_FOREACH(ptr, global_channel_list.head) |
212380e3 AC |
756 | { |
757 | chptr = ptr->data; | |
758 | ||
759 | if(*chptr->chname != '#') | |
760 | continue; | |
761 | ||
b2f0da88 | 762 | cur_len = mlen = rb_sprintf(buf, ":%s SJOIN %ld %s %s :", me.id, |
212380e3 AC |
763 | (long) chptr->channelts, chptr->chname, |
764 | channel_modes(chptr, client_p)); | |
765 | ||
766 | t = buf + mlen; | |
767 | ||
5cefa1d6 | 768 | RB_DLINK_FOREACH(uptr, chptr->members.head) |
212380e3 AC |
769 | { |
770 | msptr = uptr->data; | |
771 | ||
772 | tlen = strlen(use_id(msptr->client_p)) + 1; | |
773 | if(is_chanop(msptr)) | |
774 | tlen++; | |
775 | if(is_voiced(msptr)) | |
776 | tlen++; | |
777 | ||
778 | if(cur_len + tlen >= BUFSIZE - 3) | |
779 | { | |
780 | *(t-1) = '\0'; | |
781 | sendto_one(client_p, "%s", buf); | |
782 | cur_len = mlen; | |
783 | t = buf + mlen; | |
784 | } | |
785 | ||
b2f0da88 | 786 | rb_sprintf(t, "%s%s ", find_channel_status(msptr, 1), |
212380e3 AC |
787 | use_id(msptr->client_p)); |
788 | ||
789 | cur_len += tlen; | |
790 | t += tlen; | |
791 | } | |
792 | ||
330fc5c1 | 793 | if (rb_dlink_list_length(&chptr->members) > 0) |
212380e3 AC |
794 | { |
795 | /* remove trailing space */ | |
796 | *(t-1) = '\0'; | |
797 | } | |
798 | sendto_one(client_p, "%s", buf); | |
799 | ||
330fc5c1 | 800 | if(rb_dlink_list_length(&chptr->banlist) > 0) |
212380e3 AC |
801 | burst_modes_TS6(client_p, chptr, &chptr->banlist, 'b'); |
802 | ||
803 | if(IsCapable(client_p, CAP_EX) && | |
330fc5c1 | 804 | rb_dlink_list_length(&chptr->exceptlist) > 0) |
212380e3 AC |
805 | burst_modes_TS6(client_p, chptr, &chptr->exceptlist, 'e'); |
806 | ||
807 | if(IsCapable(client_p, CAP_IE) && | |
330fc5c1 | 808 | rb_dlink_list_length(&chptr->invexlist) > 0) |
212380e3 AC |
809 | burst_modes_TS6(client_p, chptr, &chptr->invexlist, 'I'); |
810 | ||
330fc5c1 | 811 | if(rb_dlink_list_length(&chptr->quietlist) > 0) |
212380e3 AC |
812 | burst_modes_TS6(client_p, chptr, &chptr->quietlist, 'q'); |
813 | ||
814 | if(IsCapable(client_p, CAP_TB) && chptr->topic != NULL) | |
815 | sendto_one(client_p, ":%s TB %s %ld %s%s:%s", | |
816 | me.id, chptr->chname, (long) chptr->topic_time, | |
817 | ConfigChannel.burst_topicwho ? chptr->topic_info : "", | |
818 | ConfigChannel.burst_topicwho ? " " : "", | |
819 | chptr->topic); | |
820 | ||
821 | hchaninfo.chptr = chptr; | |
822 | call_hook(h_burst_channel, &hchaninfo); | |
823 | } | |
824 | ||
825 | hclientinfo.target = NULL; | |
826 | call_hook(h_burst_finished, &hclientinfo); | |
827 | } | |
828 | ||
829 | /* | |
830 | * show_capabilities - show current server capabilities | |
831 | * | |
832 | * inputs - pointer to an struct Client | |
833 | * output - pointer to static string | |
834 | * side effects - build up string representing capabilities of server listed | |
835 | */ | |
836 | const char * | |
837 | show_capabilities(struct Client *target_p) | |
838 | { | |
839 | static char msgbuf[BUFSIZE]; | |
840 | struct Capability *cap; | |
212380e3 | 841 | |
f4a759c5 VY |
842 | if(has_id(target_p)) |
843 | rb_strlcpy(msgbuf, " TS6", sizeof(msgbuf)); | |
844 | else | |
845 | rb_strlcpy(msgbuf, " TS", sizeof(msgbuf)); | |
846 | ||
847 | if(IsSSL(target_p)) | |
848 | rb_strlcat(msgbuf, " SSL", sizeof(msgbuf)); | |
212380e3 AC |
849 | |
850 | if(!IsServer(target_p) || !target_p->serv->caps) /* short circuit if no caps */ | |
f4a759c5 | 851 | return msgbuf + 1; |
212380e3 AC |
852 | |
853 | for (cap = captab; cap->cap; ++cap) | |
854 | { | |
855 | if(cap->cap & target_p->serv->caps) | |
f4a759c5 | 856 | rb_snprintf_append(msgbuf, sizeof(msgbuf), " %s", cap->name); |
212380e3 AC |
857 | } |
858 | ||
f4a759c5 | 859 | return msgbuf + 1; |
212380e3 AC |
860 | } |
861 | ||
862 | /* | |
863 | * server_estab | |
864 | * | |
865 | * inputs - pointer to a struct Client | |
866 | * output - | |
867 | * side effects - | |
868 | */ | |
869 | int | |
870 | server_estab(struct Client *client_p) | |
871 | { | |
872 | struct Client *target_p; | |
873 | struct server_conf *server_p; | |
874 | hook_data_client hdata; | |
875 | char *host; | |
330fc5c1 | 876 | rb_dlink_node *ptr; |
6c528b8e | 877 | char note[HOSTLEN + 15]; |
212380e3 AC |
878 | |
879 | s_assert(NULL != client_p); | |
880 | if(client_p == NULL) | |
881 | return -1; | |
212380e3 AC |
882 | |
883 | host = client_p->name; | |
884 | ||
885 | if((server_p = client_p->localClient->att_sconf) == NULL) | |
886 | { | |
887 | /* This shouldn't happen, better tell the ops... -A1kmm */ | |
888 | sendto_realops_snomask(SNO_GENERAL, is_remote_connect(client_p) ? L_NETWIDE : L_ALL, | |
889 | "Warning: Lost connect{} block for server %s!", host); | |
890 | return exit_client(client_p, client_p, client_p, "Lost connect{} block!"); | |
891 | } | |
892 | ||
893 | /* We shouldn't have to check this, it should already done before | |
894 | * server_estab is called. -A1kmm | |
895 | */ | |
896 | if(client_p->localClient->passwd) | |
897 | { | |
898 | memset(client_p->localClient->passwd, 0, strlen(client_p->localClient->passwd)); | |
637c4932 | 899 | rb_free(client_p->localClient->passwd); |
212380e3 AC |
900 | client_p->localClient->passwd = NULL; |
901 | } | |
902 | ||
903 | /* Its got identd , since its a server */ | |
904 | SetGotId(client_p); | |
905 | ||
906 | /* If there is something in the serv_list, it might be this | |
907 | * connecting server.. | |
908 | */ | |
909 | if(!ServerInfo.hub && serv_list.head) | |
910 | { | |
911 | if(client_p != serv_list.head->data || serv_list.head->next) | |
912 | { | |
47adde3d | 913 | ServerStats.is_ref++; |
212380e3 AC |
914 | sendto_one(client_p, "ERROR :I'm a leaf not a hub"); |
915 | return exit_client(client_p, client_p, client_p, "I'm a leaf"); | |
916 | } | |
917 | } | |
918 | ||
919 | if(IsUnknown(client_p)) | |
920 | { | |
921 | /* | |
922 | * jdc -- 1. Use EmptyString(), not [0] index reference. | |
923 | * 2. Check ->spasswd, not ->passwd. | |
924 | */ | |
925 | if(!EmptyString(server_p->spasswd)) | |
926 | { | |
cda8e9b8 AC |
927 | sendto_one(client_p, "PASS %s TS %d :%s", |
928 | server_p->spasswd, TS_CURRENT, me.id); | |
212380e3 AC |
929 | } |
930 | ||
931 | /* pass info to new server */ | |
932 | send_capabilities(client_p, default_server_capabs | |
933 | | (ServerConfCompressed(server_p) ? CAP_ZIP_SUPPORTED : 0) | |
934 | | (ServerConfTb(server_p) ? CAP_TB : 0)); | |
935 | ||
936 | sendto_one(client_p, "SERVER %s 1 :%s%s", | |
937 | me.name, | |
938 | ConfigServerHide.hidden ? "(H) " : "", | |
939 | (me.info[0]) ? (me.info) : "IRCers United"); | |
940 | } | |
941 | ||
6c528b8e | 942 | if(!rb_set_buffers(client_p->localClient->F, READBUF_SIZE)) |
825ddf13 | 943 | ilog_error("rb_set_buffers failed for server"); |
212380e3 | 944 | |
c6d72037 | 945 | /* Enable compression now */ |
f4a759c5 VY |
946 | if(IsCapable(client_p, CAP_ZIP)) |
947 | { | |
948 | start_zlib_session(client_p); | |
949 | } | |
e3354945 | 950 | sendto_one(client_p, "SVINFO %d %d 0 :%ld", TS_CURRENT, TS_MIN, rb_current_time()); |
212380e3 AC |
951 | |
952 | client_p->servptr = &me; | |
953 | ||
954 | if(IsAnyDead(client_p)) | |
955 | return CLIENT_EXITED; | |
956 | ||
957 | SetServer(client_p); | |
958 | ||
959 | /* Update the capability combination usage counts */ | |
960 | set_chcap_usage_counts(client_p); | |
961 | ||
330fc5c1 | 962 | rb_dlinkAdd(client_p, &client_p->lnode, &me.serv->servers); |
54015b5f | 963 | del_unknown_ip(client_p); |
330fc5c1 AC |
964 | rb_dlinkMoveNode(&client_p->localClient->tnode, &unknown_list, &serv_list); |
965 | rb_dlinkAddTailAlloc(client_p, &global_serv_list); | |
212380e3 AC |
966 | |
967 | if(has_id(client_p)) | |
968 | add_to_id_hash(client_p->id, client_p); | |
969 | ||
970 | add_to_client_hash(client_p->name, client_p); | |
971 | /* doesnt duplicate client_p->serv if allocated this struct already */ | |
972 | make_server(client_p); | |
212380e3 AC |
973 | |
974 | client_p->serv->caps = client_p->localClient->caps; | |
975 | ||
976 | if(client_p->localClient->fullcaps) | |
977 | { | |
47a03750 | 978 | client_p->serv->fullcaps = rb_strdup(client_p->localClient->fullcaps); |
637c4932 | 979 | rb_free(client_p->localClient->fullcaps); |
212380e3 AC |
980 | client_p->localClient->fullcaps = NULL; |
981 | } | |
982 | ||
994544c2 | 983 | client_p->serv->nameinfo = scache_connect(client_p->name, client_p->info, IsHidden(client_p)); |
e3354945 | 984 | client_p->localClient->firsttime = rb_current_time(); |
212380e3 AC |
985 | /* fixing eob timings.. -gnp */ |
986 | ||
330fc5c1 | 987 | if((rb_dlink_list_length(&lclient_list) + rb_dlink_list_length(&serv_list)) > |
2f15f871 | 988 | (unsigned long)MaxConnectionCount) |
330fc5c1 AC |
989 | MaxConnectionCount = rb_dlink_list_length(&lclient_list) + |
990 | rb_dlink_list_length(&serv_list); | |
2f15f871 | 991 | |
212380e3 AC |
992 | /* Show the real host/IP to admins */ |
993 | sendto_realops_snomask(SNO_GENERAL, L_ALL, | |
994 | "Link with %s established: (%s) link", | |
995 | get_server_name(client_p, SHOW_IP), | |
996 | show_capabilities(client_p)); | |
997 | ||
998 | ilog(L_SERVER, "Link with %s established: (%s) link", | |
999 | log_client_name(client_p, SHOW_IP), show_capabilities(client_p)); | |
1000 | ||
1001 | hdata.client = &me; | |
1002 | hdata.target = client_p; | |
1003 | call_hook(h_server_introduced, &hdata); | |
1004 | ||
f4a759c5 | 1005 | rb_snprintf(note, sizeof(note), "Server: %s", client_p->name); |
c6d72037 | 1006 | rb_note(client_p->localClient->F, note); |
212380e3 AC |
1007 | |
1008 | /* | |
1009 | ** Old sendto_serv_but_one() call removed because we now | |
1010 | ** need to send different names to different servers | |
1011 | ** (domain name matching) Send new server to other servers. | |
1012 | */ | |
5cefa1d6 | 1013 | RB_DLINK_FOREACH(ptr, serv_list.head) |
212380e3 AC |
1014 | { |
1015 | target_p = ptr->data; | |
1016 | ||
1017 | if(target_p == client_p) | |
1018 | continue; | |
1019 | ||
1020 | if(has_id(target_p) && has_id(client_p)) | |
1021 | { | |
1022 | sendto_one(target_p, ":%s SID %s 2 %s :%s%s", | |
1023 | me.id, client_p->name, client_p->id, | |
1024 | IsHidden(client_p) ? "(H) " : "", client_p->info); | |
1025 | ||
1026 | if(IsCapable(target_p, CAP_ENCAP) && | |
1027 | !EmptyString(client_p->serv->fullcaps)) | |
1028 | sendto_one(target_p, ":%s ENCAP * GCAP :%s", | |
1029 | client_p->id, client_p->serv->fullcaps); | |
1030 | } | |
1031 | else | |
1032 | { | |
1033 | sendto_one(target_p, ":%s SERVER %s 2 :%s%s", | |
1034 | me.name, client_p->name, | |
1035 | IsHidden(client_p) ? "(H) " : "", client_p->info); | |
1036 | ||
1037 | if(IsCapable(target_p, CAP_ENCAP) && | |
1038 | !EmptyString(client_p->serv->fullcaps)) | |
1039 | sendto_one(target_p, ":%s ENCAP * GCAP :%s", | |
1040 | client_p->name, client_p->serv->fullcaps); | |
1041 | } | |
1042 | } | |
1043 | ||
1044 | /* | |
1045 | ** Pass on my client information to the new server | |
1046 | ** | |
1047 | ** First, pass only servers (idea is that if the link gets | |
1048 | ** cancelled beacause the server was already there, | |
1049 | ** there are no NICK's to be cancelled...). Of course, | |
1050 | ** if cancellation occurs, all this info is sent anyway, | |
1051 | ** and I guess the link dies when a read is attempted...? --msa | |
1052 | ** | |
1053 | ** Note: Link cancellation to occur at this point means | |
1054 | ** that at least two servers from my fragment are building | |
1055 | ** up connection this other fragment at the same time, it's | |
1056 | ** a race condition, not the normal way of operation... | |
1057 | ** | |
1058 | ** ALSO NOTE: using the get_client_name for server names-- | |
1059 | ** see previous *WARNING*!!! (Also, original inpath | |
1060 | ** is destroyed...) | |
1061 | */ | |
5cefa1d6 | 1062 | RB_DLINK_FOREACH(ptr, global_serv_list.head) |
212380e3 AC |
1063 | { |
1064 | target_p = ptr->data; | |
1065 | ||
1066 | /* target_p->from == target_p for target_p == client_p */ | |
1067 | if(IsMe(target_p) || target_p->from == client_p) | |
1068 | continue; | |
1069 | ||
1070 | /* presumption, if target has an id, so does its uplink */ | |
1071 | if(has_id(client_p) && has_id(target_p)) | |
1072 | sendto_one(client_p, ":%s SID %s %d %s :%s%s", | |
66c8fdd2 | 1073 | target_p->servptr->id, target_p->name, |
212380e3 AC |
1074 | target_p->hopcount + 1, target_p->id, |
1075 | IsHidden(target_p) ? "(H) " : "", target_p->info); | |
1076 | else | |
1077 | sendto_one(client_p, ":%s SERVER %s %d :%s%s", | |
66c8fdd2 | 1078 | target_p->servptr->name, |
212380e3 AC |
1079 | target_p->name, target_p->hopcount + 1, |
1080 | IsHidden(target_p) ? "(H) " : "", target_p->info); | |
1081 | ||
1082 | if(IsCapable(client_p, CAP_ENCAP) && | |
1083 | !EmptyString(target_p->serv->fullcaps)) | |
1084 | sendto_one(client_p, ":%s ENCAP * GCAP :%s", | |
1085 | get_id(target_p, client_p), | |
1086 | target_p->serv->fullcaps); | |
1087 | } | |
1088 | ||
1089 | if(has_id(client_p)) | |
1090 | burst_TS6(client_p); | |
1091 | else | |
1092 | burst_TS5(client_p); | |
1093 | ||
1094 | /* Always send a PING after connect burst is done */ | |
1095 | sendto_one(client_p, "PING :%s", get_id(&me, client_p)); | |
1096 | ||
1097 | free_pre_client(client_p); | |
1098 | ||
f4a759c5 | 1099 | if (!IsCapable(client_p, CAP_ZIP)) |
c6d72037 | 1100 | send_pop_queue(client_p); |
212380e3 AC |
1101 | |
1102 | return 0; | |
212380e3 AC |
1103 | } |
1104 | ||
1105 | /* | |
1106 | * New server connection code | |
1107 | * Based upon the stuff floating about in s_bsd.c | |
1108 | * -- adrian | |
1109 | */ | |
1110 | ||
abe5dd20 JT |
1111 | static int |
1112 | serv_connect_resolved(struct Client *client_p) | |
1113 | { | |
1114 | struct rb_sockaddr_storage myipnum; | |
1115 | char vhoststr[HOSTIPLEN]; | |
1116 | struct server_conf *server_p; | |
1117 | uint16_t port; | |
1118 | ||
1119 | if((server_p = client_p->localClient->att_sconf) == NULL) | |
1120 | { | |
1121 | sendto_realops_snomask(SNO_GENERAL, is_remote_connect(client_p) ? L_NETWIDE : L_ALL, "Lost connect{} block for %s", | |
1122 | get_server_name(client_p, HIDE_IP)); | |
1123 | exit_client(client_p, client_p, &me, "Lost connect{} block"); | |
1124 | return 0; | |
1125 | } | |
1126 | ||
1127 | #ifdef RB_IPV6 | |
1128 | if(client_p->localClient->ip.ss_family == AF_INET6) | |
1129 | port = ntohs(((struct sockaddr_in6 *)&client_p->localClient->ip)->sin6_port); | |
1130 | else | |
1131 | #endif | |
1132 | port = ntohs(((struct sockaddr_in *)&client_p->localClient->ip)->sin_port); | |
1133 | ||
1134 | if(ServerConfVhosted(server_p)) | |
1135 | { | |
1136 | memcpy(&myipnum, &server_p->my_ipnum, sizeof(myipnum)); | |
1137 | ((struct sockaddr_in *)&myipnum)->sin_port = 0; | |
1138 | myipnum.ss_family = server_p->aftype; | |
1139 | ||
1140 | } | |
1141 | else if(server_p->aftype == AF_INET && ServerInfo.specific_ipv4_vhost) | |
1142 | { | |
1143 | memcpy(&myipnum, &ServerInfo.ip, sizeof(myipnum)); | |
1144 | ((struct sockaddr_in *)&myipnum)->sin_port = 0; | |
1145 | myipnum.ss_family = AF_INET; | |
1146 | SET_SS_LEN(&myipnum, sizeof(struct sockaddr_in)); | |
1147 | } | |
1148 | ||
1149 | #ifdef RB_IPV6 | |
1150 | else if((server_p->aftype == AF_INET6) && ServerInfo.specific_ipv6_vhost) | |
1151 | { | |
1152 | memcpy(&myipnum, &ServerInfo.ip6, sizeof(myipnum)); | |
1153 | ((struct sockaddr_in6 *)&myipnum)->sin6_port = 0; | |
1154 | myipnum.ss_family = AF_INET6; | |
1155 | SET_SS_LEN(&myipnum, sizeof(struct sockaddr_in6)); | |
1156 | } | |
1157 | #endif | |
1158 | else | |
1159 | { | |
1160 | /* log */ | |
1161 | ilog(L_SERVER, "Connecting to %s[%s] port %d (%s)", client_p->name, client_p->sockhost, port, | |
1162 | #ifdef RB_IPV6 | |
1163 | server_p->aftype == AF_INET6 ? "IPv6" : | |
1164 | #endif | |
1165 | (server_p->aftype == AF_INET ? "IPv4" : "?")); | |
1166 | ||
f4a759c5 VY |
1167 | if(ServerConfSSL(server_p)) |
1168 | { | |
1169 | rb_connect_tcp(client_p->localClient->F, (struct sockaddr *)&client_p->localClient->ip, | |
1170 | NULL, 0, serv_connect_ssl_callback, | |
1171 | client_p, ConfigFileEntry.connect_timeout); | |
1172 | } | |
1173 | else | |
1174 | rb_connect_tcp(client_p->localClient->F, (struct sockaddr *)&client_p->localClient->ip, | |
1175 | NULL, 0, serv_connect_callback, | |
c6d72037 | 1176 | client_p, ConfigFileEntry.connect_timeout); |
abe5dd20 JT |
1177 | return 1; |
1178 | } | |
1179 | ||
1180 | /* log */ | |
1181 | inetntop_sock((struct sockaddr *)&myipnum, vhoststr, sizeof vhoststr); | |
1182 | ilog(L_SERVER, "Connecting to %s[%s] port %d (%s) (vhost %s)", client_p->name, client_p->sockhost, port, | |
1183 | #ifdef RB_IPV6 | |
1184 | server_p->aftype == AF_INET6 ? "IPv6" : | |
1185 | #endif | |
1186 | (server_p->aftype == AF_INET ? "IPv4" : "?"), vhoststr); | |
1187 | ||
1188 | ||
f4a759c5 VY |
1189 | if(ServerConfSSL(server_p)) |
1190 | rb_connect_tcp(client_p->localClient->F, (struct sockaddr *)&client_p->localClient->ip, | |
1191 | (struct sockaddr *) &myipnum, | |
1192 | GET_SS_LEN(&myipnum), serv_connect_ssl_callback, client_p, | |
1193 | ConfigFileEntry.connect_timeout); | |
1194 | else | |
1195 | rb_connect_tcp(client_p->localClient->F, (struct sockaddr *)&client_p->localClient->ip, | |
1196 | (struct sockaddr *) &myipnum, | |
1197 | GET_SS_LEN(&myipnum), serv_connect_callback, client_p, | |
c6d72037 | 1198 | ConfigFileEntry.connect_timeout); |
abe5dd20 JT |
1199 | |
1200 | return 1; | |
1201 | } | |
1202 | ||
1203 | static void | |
1204 | serv_connect_dns_callback(void *vptr, struct DNSReply *reply) | |
1205 | { | |
1206 | struct Client *client_p = vptr; | |
1207 | uint16_t port; | |
1208 | ||
1209 | rb_free(client_p->localClient->dnsquery); | |
1210 | client_p->localClient->dnsquery = NULL; | |
1211 | ||
1212 | if (reply == NULL) | |
1213 | { | |
1214 | sendto_realops_snomask(SNO_GENERAL, is_remote_connect(client_p) ? L_NETWIDE : L_ALL, "Cannot resolve hostname for %s", | |
1215 | get_server_name(client_p, HIDE_IP)); | |
1216 | ilog(L_SERVER, "Cannot resolve hostname for %s", | |
1217 | log_client_name(client_p, HIDE_IP)); | |
1218 | exit_client(client_p, client_p, &me, "Cannot resolve hostname"); | |
1219 | return; | |
1220 | } | |
1221 | #ifdef RB_IPV6 | |
1222 | if(reply->addr.ss_family == AF_INET6) | |
1223 | port = ((struct sockaddr_in6 *)&client_p->localClient->ip)->sin6_port; | |
1224 | else | |
1225 | #endif | |
1226 | port = ((struct sockaddr_in *)&client_p->localClient->ip)->sin_port; | |
1227 | memcpy(&client_p->localClient->ip, &reply->addr, sizeof(client_p->localClient->ip)); | |
1228 | #ifdef RB_IPV6 | |
1229 | if(reply->addr.ss_family == AF_INET6) | |
1230 | ((struct sockaddr_in6 *)&client_p->localClient->ip)->sin6_port = port; | |
1231 | else | |
1232 | #endif | |
1233 | ((struct sockaddr_in *)&client_p->localClient->ip)->sin_port = port; | |
1234 | /* Set sockhost properly now -- jilles */ | |
1235 | inetntop_sock((struct sockaddr *)&client_p->localClient->ip, | |
1236 | client_p->sockhost, sizeof client_p->sockhost); | |
1237 | serv_connect_resolved(client_p); | |
1238 | } | |
1239 | ||
212380e3 AC |
1240 | /* |
1241 | * serv_connect() - initiate a server connection | |
1242 | * | |
1243 | * inputs - pointer to conf | |
1244 | * - pointer to client doing the connet | |
1245 | * output - | |
1246 | * side effects - | |
1247 | * | |
1248 | * This code initiates a connection to a server. It first checks to make | |
1249 | * sure the given server exists. If this is the case, it creates a socket, | |
1250 | * creates a client, saves the socket information in the client, and | |
b2f0da88 | 1251 | * initiates a connection to the server through rb_connect_tcp(). The |
212380e3 AC |
1252 | * completion of this goes through serv_completed_connection(). |
1253 | * | |
1254 | * We return 1 if the connection is attempted, since we don't know whether | |
1255 | * it suceeded or not, and 0 if it fails in here somewhere. | |
1256 | */ | |
1257 | int | |
1258 | serv_connect(struct server_conf *server_p, struct Client *by) | |
1259 | { | |
1260 | struct Client *client_p; | |
abe5dd20 | 1261 | struct rb_sockaddr_storage theiripnum; |
6c528b8e | 1262 | rb_fde_t *F; |
6c528b8e | 1263 | char note[HOSTLEN + 10]; |
212380e3 AC |
1264 | |
1265 | s_assert(server_p != NULL); | |
1266 | if(server_p == NULL) | |
1267 | return 0; | |
1268 | ||
1269 | /* | |
1270 | * Make sure this server isn't already connected | |
1271 | */ | |
1272 | if((client_p = find_server(NULL, server_p->name))) | |
1273 | { | |
1274 | sendto_realops_snomask(SNO_GENERAL, L_ALL, | |
1275 | "Server %s already present from %s", | |
1276 | server_p->name, get_server_name(client_p, SHOW_IP)); | |
1277 | if(by && IsPerson(by) && !MyClient(by)) | |
1278 | sendto_one_notice(by, ":Server %s already present from %s", | |
1279 | server_p->name, get_server_name(client_p, SHOW_IP)); | |
1280 | return 0; | |
1281 | } | |
1282 | ||
1283 | /* create a socket for the server connection */ | |
75c58138 | 1284 | if((F = rb_socket(server_p->aftype, SOCK_STREAM, 0, NULL)) == NULL) |
212380e3 | 1285 | { |
825ddf13 | 1286 | ilog_error("opening a stream socket"); |
212380e3 AC |
1287 | return 0; |
1288 | } | |
1289 | ||
6c528b8e JT |
1290 | rb_snprintf(note, sizeof note, "Server: %s", server_p->name); |
1291 | rb_note(F, note); | |
212380e3 AC |
1292 | |
1293 | /* Create a local client */ | |
1294 | client_p = make_client(NULL); | |
1295 | ||
1296 | /* Copy in the server, hostname, fd | |
1297 | * The sockhost may be a hostname, this will be corrected later | |
1298 | * -- jilles | |
1299 | */ | |
1300 | strlcpy(client_p->name, server_p->name, sizeof(client_p->name)); | |
1301 | strlcpy(client_p->host, server_p->host, sizeof(client_p->host)); | |
1302 | strlcpy(client_p->sockhost, server_p->host, sizeof(client_p->sockhost)); | |
6c528b8e | 1303 | client_p->localClient->F = F; |
c6d72037 | 1304 | add_to_cli_fd_hash(client_p); |
212380e3 AC |
1305 | |
1306 | /* | |
1307 | * Set up the initial server evilness, ripped straight from | |
1308 | * connect_server(), so don't blame me for it being evil. | |
1309 | * -- adrian | |
1310 | */ | |
1311 | ||
6c528b8e | 1312 | if(!rb_set_buffers(client_p->localClient->F, READBUF_SIZE)) |
212380e3 | 1313 | { |
825ddf13 | 1314 | ilog_error("setting the buffer size for a server connection"); |
212380e3 AC |
1315 | } |
1316 | ||
1317 | /* | |
1318 | * Attach config entries to client here rather than in | |
1319 | * serv_connect_callback(). This to avoid null pointer references. | |
1320 | */ | |
1321 | attach_server_conf(client_p, server_p); | |
1322 | ||
1323 | /* | |
1324 | * at this point we have a connection in progress and C/N lines | |
1325 | * attached to the client, the socket info should be saved in the | |
1326 | * client and it should either be resolved or have a valid address. | |
1327 | * | |
1328 | * The socket has been connected or connect is in progress. | |
1329 | */ | |
1330 | make_server(client_p); | |
1331 | if(by && IsPerson(by)) | |
1332 | { | |
1333 | strcpy(client_p->serv->by, by->name); | |
1334 | if(client_p->serv->user) | |
1335 | free_user(client_p->serv->user, NULL); | |
1336 | client_p->serv->user = by->user; | |
1337 | by->user->refcnt++; | |
1338 | } | |
1339 | else | |
1340 | { | |
1341 | strcpy(client_p->serv->by, "AutoConn."); | |
1342 | if(client_p->serv->user) | |
1343 | free_user(client_p->serv->user, NULL); | |
1344 | client_p->serv->user = NULL; | |
1345 | } | |
212380e3 | 1346 | SetConnecting(client_p); |
330fc5c1 | 1347 | rb_dlinkAddTail(client_p, &client_p->node, &global_client_list); |
212380e3 | 1348 | |
abe5dd20 | 1349 | if (rb_inet_pton_sock(server_p->host, (struct sockaddr *)&theiripnum) > 0) |
212380e3 | 1350 | { |
abe5dd20 | 1351 | memcpy(&client_p->localClient->ip, &theiripnum, sizeof(client_p->localClient->ip)); |
ccda6e3f | 1352 | #ifdef RB_IPV6 |
abe5dd20 JT |
1353 | if(theiripnum.ss_family == AF_INET6) |
1354 | ((struct sockaddr_in6 *)&client_p->localClient->ip)->sin6_port = htons(server_p->port); | |
1355 | else | |
212380e3 | 1356 | #endif |
abe5dd20 JT |
1357 | ((struct sockaddr_in *)&client_p->localClient->ip)->sin_port = htons(server_p->port); |
1358 | ||
1359 | return serv_connect_resolved(client_p); | |
1360 | } | |
212380e3 AC |
1361 | else |
1362 | { | |
ccda6e3f | 1363 | #ifdef RB_IPV6 |
abe5dd20 JT |
1364 | if(theiripnum.ss_family == AF_INET6) |
1365 | ((struct sockaddr_in6 *)&client_p->localClient->ip)->sin6_port = htons(server_p->port); | |
1366 | else | |
17648928 | 1367 | #endif |
abe5dd20 | 1368 | ((struct sockaddr_in *)&client_p->localClient->ip)->sin_port = htons(server_p->port); |
17648928 | 1369 | |
abe5dd20 JT |
1370 | client_p->localClient->dnsquery = rb_malloc(sizeof(struct DNSQuery)); |
1371 | client_p->localClient->dnsquery->ptr = client_p; | |
1372 | client_p->localClient->dnsquery->callback = serv_connect_dns_callback; | |
1373 | gethost_byname_type(server_p->host, client_p->localClient->dnsquery, | |
ccda6e3f | 1374 | #ifdef RB_IPV6 |
abe5dd20 | 1375 | server_p->aftype == AF_INET6 ? T_AAAA : |
17648928 | 1376 | #endif |
abe5dd20 JT |
1377 | T_A); |
1378 | return 1; | |
1379 | } | |
212380e3 AC |
1380 | } |
1381 | ||
f4a759c5 VY |
1382 | static void |
1383 | serv_connect_ev(void *data) | |
1384 | { | |
1385 | struct Client *client_p = data; | |
1386 | serv_connect_callback(client_p->localClient->F, RB_OK, client_p); | |
c6d72037 VY |
1387 | } |
1388 | ||
f4a759c5 VY |
1389 | static void |
1390 | serv_connect_ssl_callback(rb_fde_t *F, int status, void *data) | |
1391 | { | |
1392 | struct Client *client_p = data; | |
1393 | rb_fde_t *xF[2]; | |
1394 | if(status != RB_OK) | |
1395 | { | |
1396 | /* XXX deal with failure */ | |
1397 | return; | |
1398 | } | |
1399 | rb_connect_sockaddr(F, (struct sockaddr *)&client_p->localClient->ip, sizeof(client_p->localClient->ip)); | |
1400 | rb_socketpair(AF_UNIX, SOCK_STREAM, 0, &xF[0], &xF[1], "Outgoing ssld connection"); | |
1401 | del_from_cli_fd_hash(client_p); | |
1402 | client_p->localClient->F = xF[0]; | |
1403 | add_to_cli_fd_hash(client_p); | |
1404 | ||
1405 | client_p->localClient->ssl_ctl = start_ssld_connect(F, xF[1], rb_get_fd(xF[0])); | |
1406 | SetSSL(client_p); | |
1407 | rb_event_addonce("serv_connect_ev", serv_connect_ev, client_p, 1); | |
c6d72037 VY |
1408 | } |
1409 | ||
212380e3 AC |
1410 | /* |
1411 | * serv_connect_callback() - complete a server connection. | |
1412 | * | |
1413 | * This routine is called after the server connection attempt has | |
1414 | * completed. If unsucessful, an error is sent to ops and the client | |
1415 | * is closed. If sucessful, it goes through the initialisation/check | |
1416 | * procedures, the capabilities are sent, and the socket is then | |
1417 | * marked for reading. | |
1418 | */ | |
1419 | static void | |
6c528b8e | 1420 | serv_connect_callback(rb_fde_t *F, int status, void *data) |
212380e3 AC |
1421 | { |
1422 | struct Client *client_p = data; | |
1423 | struct server_conf *server_p; | |
1424 | char *errstr; | |
1425 | ||
1426 | /* First, make sure its a real client! */ | |
1427 | s_assert(client_p != NULL); | |
6c528b8e | 1428 | s_assert(client_p->localClient->F == F); |
212380e3 AC |
1429 | |
1430 | if(client_p == NULL) | |
1431 | return; | |
1432 | ||
1433 | /* while we were waiting for the callback, its possible this already | |
1434 | * linked in.. --fl | |
1435 | */ | |
1436 | if(find_server(NULL, client_p->name) != NULL) | |
1437 | { | |
1438 | exit_client(client_p, client_p, &me, "Server Exists"); | |
1439 | return; | |
1440 | } | |
1441 | ||
f4a759c5 | 1442 | if(client_p->localClient->ssl_ctl == NULL) |
c6d72037 VY |
1443 | rb_connect_sockaddr(F, (struct sockaddr *)&client_p->localClient->ip, sizeof(client_p->localClient->ip)); |
1444 | ||
212380e3 | 1445 | /* Check the status */ |
6c528b8e | 1446 | if(status != RB_OK) |
212380e3 AC |
1447 | { |
1448 | /* COMM_ERR_TIMEOUT wont have an errno associated with it, | |
1449 | * the others will.. --fl | |
1450 | */ | |
6c528b8e | 1451 | if(status == RB_ERR_TIMEOUT) |
212380e3 AC |
1452 | { |
1453 | sendto_realops_snomask(SNO_GENERAL, is_remote_connect(client_p) ? L_NETWIDE : L_ALL, | |
1454 | "Error connecting to %s[%s]: %s", | |
1455 | client_p->name, | |
1456 | #ifdef HIDE_SERVERS_IPS | |
1457 | "255.255.255.255", | |
1458 | #else | |
1459 | client_p->host, | |
1460 | #endif | |
b2f0da88 | 1461 | rb_errstr(status)); |
212380e3 AC |
1462 | ilog(L_SERVER, "Error connecting to %s[%s]: %s", |
1463 | client_p->name, client_p->sockhost, | |
b2f0da88 | 1464 | rb_errstr(status)); |
212380e3 AC |
1465 | } |
1466 | else | |
1467 | { | |
6c528b8e | 1468 | errstr = strerror(rb_get_sockerr(F)); |
212380e3 AC |
1469 | sendto_realops_snomask(SNO_GENERAL, is_remote_connect(client_p) ? L_NETWIDE : L_ALL, |
1470 | "Error connecting to %s[%s]: %s (%s)", | |
1471 | client_p->name, | |
1472 | #ifdef HIDE_SERVERS_IPS | |
1473 | "255.255.255.255", | |
1474 | #else | |
1475 | client_p->host, | |
1476 | #endif | |
b2f0da88 | 1477 | rb_errstr(status), errstr); |
212380e3 AC |
1478 | ilog(L_SERVER, "Error connecting to %s[%s]: %s (%s)", |
1479 | client_p->name, client_p->sockhost, | |
b2f0da88 | 1480 | rb_errstr(status), errstr); |
212380e3 AC |
1481 | } |
1482 | ||
b2f0da88 | 1483 | exit_client(client_p, client_p, &me, rb_errstr(status)); |
212380e3 AC |
1484 | return; |
1485 | } | |
1486 | ||
1487 | /* COMM_OK, so continue the connection procedure */ | |
1488 | /* Get the C/N lines */ | |
1489 | if((server_p = client_p->localClient->att_sconf) == NULL) | |
1490 | { | |
1491 | sendto_realops_snomask(SNO_GENERAL, is_remote_connect(client_p) ? L_NETWIDE : L_ALL, "Lost connect{} block for %s", | |
1492 | get_server_name(client_p, HIDE_IP)); | |
1493 | exit_client(client_p, client_p, &me, "Lost connect{} block"); | |
1494 | return; | |
1495 | } | |
1496 | ||
1497 | /* Next, send the initial handshake */ | |
1498 | SetHandshake(client_p); | |
1499 | ||
1500 | /* kludge, if we're not using TS6, dont ever send | |
1501 | * ourselves as being TS6 capable. | |
1502 | */ | |
1503 | if(!EmptyString(server_p->spasswd)) | |
1504 | { | |
cda8e9b8 AC |
1505 | sendto_one(client_p, "PASS %s TS %d :%s", |
1506 | server_p->spasswd, TS_CURRENT, me.id); | |
212380e3 AC |
1507 | } |
1508 | ||
1509 | /* pass my info to the new server */ | |
1510 | send_capabilities(client_p, default_server_capabs | |
1511 | | (ServerConfCompressed(server_p) ? CAP_ZIP_SUPPORTED : 0) | |
1512 | | (ServerConfTb(server_p) ? CAP_TB : 0)); | |
1513 | ||
1514 | sendto_one(client_p, "SERVER %s 1 :%s%s", | |
1515 | me.name, | |
1516 | ConfigServerHide.hidden ? "(H) " : "", me.info); | |
1517 | ||
1518 | /* | |
1519 | * If we've been marked dead because a send failed, just exit | |
1520 | * here now and save everyone the trouble of us ever existing. | |
1521 | */ | |
1522 | if(IsAnyDead(client_p)) | |
1523 | { | |
1524 | sendto_realops_snomask(SNO_GENERAL, is_remote_connect(client_p) ? L_NETWIDE : L_ALL, | |
1525 | "%s went dead during handshake", client_p->name); | |
1526 | exit_client(client_p, client_p, &me, "Went dead during handshake"); | |
1527 | return; | |
1528 | } | |
1529 | ||
1530 | /* don't move to serv_list yet -- we haven't sent a burst! */ | |
1531 | ||
1532 | /* If we get here, we're ok, so lets start reading some data */ | |
6c528b8e | 1533 | read_packet(F, client_p); |
212380e3 AC |
1534 | } |
1535 | ||
1536 | #ifndef HAVE_SOCKETPAIR | |
1537 | static int | |
1538 | inet_socketpair(int d, int type, int protocol, int sv[2]) | |
1539 | { | |
1540 | struct sockaddr_in addr1, addr2, addr3; | |
1541 | int addr3_len = sizeof(addr3); | |
1542 | int fd, rc; | |
1543 | int port_no = 20000; | |
1544 | ||
1545 | if(d != AF_INET || type != SOCK_STREAM || protocol) | |
1546 | { | |
1547 | errno = EAFNOSUPPORT; | |
1548 | return -1; | |
1549 | } | |
1550 | if(((sv[0] = socket(AF_INET, SOCK_STREAM, 0)) < 0) || ((sv[1] = socket(AF_INET, SOCK_STREAM, 0)) < 0)) | |
1551 | return -1; | |
1552 | ||
1553 | addr1.sin_port = htons(port_no); | |
1554 | addr1.sin_family = AF_INET; | |
1555 | addr1.sin_addr.s_addr = htonl(INADDR_LOOPBACK); | |
1556 | while ((rc = bind (sv[0], (struct sockaddr *) &addr1, sizeof (addr1))) < 0 && errno == EADDRINUSE) | |
1557 | addr1.sin_port = htons(++port_no); | |
1558 | ||
1559 | if(rc < 0) | |
1560 | return -1; | |
1561 | ||
1562 | if(listen(sv[0], 1) < 0) | |
1563 | { | |
1564 | close(sv[0]); | |
1565 | close(sv[1]); | |
1566 | return -1; | |
1567 | } | |
1568 | ||
1569 | addr2.sin_port = htons(port_no); | |
1570 | addr2.sin_family = AF_INET; | |
1571 | addr2.sin_addr.s_addr = htonl(INADDR_LOOPBACK); | |
1572 | if(connect (sv[1], (struct sockaddr *) &addr2, sizeof (addr2)) < 0) | |
1573 | { | |
1574 | close(sv[0]); | |
1575 | close(sv[1]); | |
1576 | return -1; | |
1577 | } | |
1578 | ||
1579 | if((fd = accept(sv[1], (struct sockaddr *) &addr3, &addr3_len)) < 0) | |
1580 | { | |
1581 | close(sv[0]); | |
1582 | close(sv[1]); | |
1583 | return -1; | |
1584 | } | |
1585 | close(sv[0]); | |
1586 | sv[0] = fd; | |
1587 | ||
1588 | return(0); | |
1589 | ||
1590 | } | |
1591 | #endif |