/[svn]/ircd-hybrid-8/src/s_serv.c
ViewVC logotype

Contents of /ircd-hybrid-8/src/s_serv.c

Parent Directory Parent Directory | Revision Log Revision Log


Revision 1389 - (show annotations)
Tue May 1 13:08:29 2012 UTC (7 years, 6 months ago) by michael
File MIME type: text/x-chdr
File size: 46624 byte(s)
- rename some struct AccessItem members

1 /*
2 * ircd-hybrid: an advanced Internet Relay Chat Daemon(ircd).
3 * s_serv.c: Server related functions.
4 *
5 * Copyright (C) 2005 by the past and present ircd coders, and others.
6 *
7 * This program is free software; you can redistribute it and/or modify
8 * it under the terms of the GNU General Public License as published by
9 * the Free Software Foundation; either version 2 of the License, or
10 * (at your option) any later version.
11 *
12 * This program is distributed in the hope that it will be useful,
13 * but WITHOUT ANY WARRANTY; without even the implied warranty of
14 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
15 * GNU General Public License for more details.
16 *
17 * You should have received a copy of the GNU General Public License
18 * along with this program; if not, write to the Free Software
19 * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307
20 * USA
21 *
22 * $Id$
23 */
24
25 #include "stdinc.h"
26 #ifdef HAVE_LIBCRYPTO
27 #include <openssl/rsa.h>
28 #include "rsa.h"
29 #endif
30 #include "list.h"
31 #include "channel.h"
32 #include "channel_mode.h"
33 #include "client.h"
34 #include "dbuf.h"
35 #include "event.h"
36 #include "fdlist.h"
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 "s_bsd.h"
43 #include "numeric.h"
44 #include "packet.h"
45 #include "irc_res.h"
46 #include "conf.h"
47 #include "s_serv.h"
48 #include "log.h"
49 #include "s_misc.h"
50 #include "s_user.h"
51 #include "send.h"
52 #include "memory.h"
53 #include "channel.h" /* chcap_usage_counts stuff...*/
54 #include "parse.h"
55
56 #define MIN_CONN_FREQ 300
57
58 static dlink_list cap_list = { NULL, NULL, 0 };
59 static void server_burst(struct Client *);
60 static void burst_all(struct Client *);
61 static void send_tb(struct Client *client_p, struct Channel *chptr);
62
63 static CNCB serv_connect_callback;
64
65 static void burst_members(struct Client *, struct Channel *);
66
67 /*
68 * write_links_file
69 *
70 * inputs - void pointer which is not used
71 * output - NONE
72 * side effects - called from an event, write out list of linked servers
73 * but in no particular order.
74 */
75 void
76 write_links_file(void* notused)
77 {
78 MessageFileLine *next_mptr = 0;
79 MessageFileLine *mptr = 0;
80 MessageFileLine *currentMessageLine = 0;
81 MessageFileLine *newMessageLine = 0;
82 MessageFile *MessageFileptr;
83 const char *p;
84 FILE *file;
85 char buff[512];
86 dlink_node *ptr;
87
88 MessageFileptr = &ConfigFileEntry.linksfile;
89
90 if ((file = fopen(MessageFileptr->fileName, "w")) == NULL)
91 return;
92
93 for (mptr = MessageFileptr->contentsOfFile; mptr; mptr = next_mptr)
94 {
95 next_mptr = mptr->next;
96 MyFree(mptr);
97 }
98
99 MessageFileptr->contentsOfFile = NULL;
100 currentMessageLine = NULL;
101
102 DLINK_FOREACH(ptr, global_serv_list.head)
103 {
104 const struct Client *target_p = ptr->data;
105
106 /* skip ourselves, we send ourselves in /links */
107 if (IsMe(target_p))
108 continue;
109
110 /* skip hidden servers */
111 if (IsHidden(target_p) && !ConfigServerHide.disable_hidden)
112 continue;
113
114 if (target_p->info[0])
115 p = target_p->info;
116 else
117 p = "(Unknown Location)";
118
119 newMessageLine = MyMalloc(sizeof(MessageFileLine));
120
121 /* Attempt to format the file in such a way it follows the usual links output
122 * ie "servername uplink :hops info"
123 * Mostly for aesthetic reasons - makes it look pretty in mIRC ;)
124 * - madmax
125 */
126
127 /*
128 * For now, check this ircsprintf wont overflow - it shouldnt on a
129 * default config but it is configurable..
130 * This should be changed to an snprintf at some point, but I'm wanting to
131 * know if this is a cause of a bug - cryogen
132 */
133 assert(strlen(target_p->name) + strlen(me.name) + 6 + strlen(p) <=
134 MESSAGELINELEN);
135 snprintf(newMessageLine->line, sizeof(newMessageLine->line), "%s %s :1 %s",
136 target_p->name, me.name, p);
137 newMessageLine->next = NULL;
138
139 if (MessageFileptr->contentsOfFile)
140 {
141 if (currentMessageLine)
142 currentMessageLine->next = newMessageLine;
143 currentMessageLine = newMessageLine;
144 }
145 else
146 {
147 MessageFileptr->contentsOfFile = newMessageLine;
148 currentMessageLine = newMessageLine;
149 }
150
151 snprintf(buff, sizeof(buff), "%s %s :1 %s\n", target_p->name, me.name, p);
152 fputs(buff, file);
153 }
154
155 fclose(file);
156 }
157
158 /* hunt_server()
159 * Do the basic thing in delivering the message (command)
160 * across the relays to the specific server (server) for
161 * actions.
162 *
163 * Note: The command is a format string and *MUST* be
164 * of prefixed style (e.g. ":%s COMMAND %s ...").
165 * Command can have only max 8 parameters.
166 *
167 * server parv[server] is the parameter identifying the
168 * target server.
169 *
170 * *WARNING*
171 * parv[server] is replaced with the pointer to the
172 * real servername from the matched client (I'm lazy
173 * now --msa).
174 *
175 * returns: (see #defines)
176 */
177 int
178 hunt_server(struct Client *client_p, struct Client *source_p, const char *command,
179 int server, int parc, char *parv[])
180 {
181 struct Client *target_p = NULL;
182 struct Client *target_tmp = NULL;
183 dlink_node *ptr;
184 int wilds;
185
186 /* Assume it's me, if no server */
187 if (parc <= server || EmptyString(parv[server]))
188 return HUNTED_ISME;
189
190 if (!strcmp(parv[server], me.id) || match(parv[server], me.name))
191 return HUNTED_ISME;
192
193 /* These are to pickup matches that would cause the following
194 * message to go in the wrong direction while doing quick fast
195 * non-matching lookups.
196 */
197 if (MyClient(source_p))
198 target_p = hash_find_client(parv[server]);
199 else
200 target_p = find_person(client_p, parv[server]);
201
202 if (target_p)
203 if (target_p->from == source_p->from && !MyConnect(target_p))
204 target_p = NULL;
205
206 if (target_p == NULL && (target_p = hash_find_server(parv[server])))
207 if (target_p->from == source_p->from && !MyConnect(target_p))
208 target_p = NULL;
209
210 collapse(parv[server]);
211 wilds = (strchr(parv[server], '?') || strchr(parv[server], '*'));
212
213 /* Again, if there are no wild cards involved in the server
214 * name, use the hash lookup
215 */
216 if (target_p == NULL)
217 {
218 if (!wilds)
219 {
220 if (!(target_p = hash_find_server(parv[server])))
221 {
222 sendto_one(source_p, form_str(ERR_NOSUCHSERVER),
223 me.name, source_p->name, parv[server]);
224 return(HUNTED_NOSUCH);
225 }
226 }
227 else
228 {
229 DLINK_FOREACH(ptr, global_client_list.head)
230 {
231 target_tmp = ptr->data;
232
233 if (match(parv[server], target_tmp->name))
234 {
235 if (target_tmp->from == source_p->from && !MyConnect(target_tmp))
236 continue;
237 target_p = ptr->data;
238
239 if (IsRegistered(target_p) && (target_p != client_p))
240 break;
241 }
242 }
243 }
244 }
245
246 if (target_p != NULL)
247 {
248 if(!IsRegistered(target_p))
249 {
250 sendto_one(source_p, form_str(ERR_NOSUCHSERVER),
251 me.name, source_p->name, parv[server]);
252 return HUNTED_NOSUCH;
253 }
254
255 if (IsMe(target_p) || MyClient(target_p))
256 return HUNTED_ISME;
257
258 if (!match(target_p->name, parv[server]))
259 parv[server] = target_p->name;
260
261 /* This is a little kludgy but should work... */
262 if (IsClient(source_p) &&
263 ((MyConnect(target_p) && IsCapable(target_p, CAP_TS6)) ||
264 (!MyConnect(target_p) && IsCapable(target_p->from, CAP_TS6))))
265 parv[0] = ID(source_p);
266
267 sendto_one(target_p, command, parv[0],
268 parv[1], parv[2], parv[3], parv[4],
269 parv[5], parv[6], parv[7], parv[8]);
270 return(HUNTED_PASS);
271 }
272
273 sendto_one(source_p, form_str(ERR_NOSUCHSERVER),
274 me.name, source_p->name, parv[server]);
275 return(HUNTED_NOSUCH);
276 }
277
278 /* try_connections()
279 *
280 * inputs - void pointer which is not used
281 * output - NONE
282 * side effects -
283 * scan through configuration and try new connections.
284 * Returns the calendar time when the next call to this
285 * function should be made latest. (No harm done if this
286 * is called earlier or later...)
287 */
288 void
289 try_connections(void *unused)
290 {
291 dlink_node *ptr;
292 struct ConfItem *conf;
293 struct AccessItem *aconf;
294 struct ClassItem *cltmp;
295 int confrq;
296
297 /* TODO: change this to set active flag to 0 when added to event! --Habeeb */
298 if (GlobalSetOptions.autoconn == 0)
299 return;
300
301 DLINK_FOREACH(ptr, server_items.head)
302 {
303 conf = ptr->data;
304 aconf = map_to_conf(conf);
305
306 /* Also when already connecting! (update holdtimes) --SRB
307 */
308 if (!(aconf->status & CONF_SERVER) || !aconf->port ||
309 !(IsConfAllowAutoConn(aconf)))
310 continue;
311
312 cltmp = map_to_conf(aconf->class_ptr);
313
314 /* Skip this entry if the use of it is still on hold until
315 * future. Otherwise handle this entry (and set it on hold
316 * until next time). Will reset only hold times, if already
317 * made one successfull connection... [this algorithm is
318 * a bit fuzzy... -- msa >;) ]
319 */
320 if (aconf->hold > CurrentTime)
321 continue;
322
323 if (cltmp == NULL)
324 confrq = DEFAULT_CONNECTFREQUENCY;
325 else
326 {
327 confrq = cltmp->con_freq;
328 if (confrq < MIN_CONN_FREQ)
329 confrq = MIN_CONN_FREQ;
330 }
331
332 aconf->hold = CurrentTime + confrq;
333
334 /* Found a CONNECT config with port specified, scan clients
335 * and see if this server is already connected?
336 */
337 if (hash_find_server(conf->name) != NULL)
338 continue;
339
340 if (cltmp->curr_user_count < cltmp->max_total)
341 {
342 /* Go to the end of the list, if not already last */
343 if (ptr->next != NULL)
344 {
345 dlinkDelete(ptr, &server_items);
346 dlinkAddTail(conf, &conf->node, &server_items);
347 }
348
349 if (find_servconn_in_progress(conf->name))
350 return;
351
352 /* We used to only print this if serv_connect() actually
353 * succeeded, but since comm_tcp_connect() can call the callback
354 * immediately if there is an error, we were getting error messages
355 * in the wrong order. SO, we just print out the activated line,
356 * and let serv_connect() / serv_connect_callback() print an
357 * error afterwards if it fails.
358 * -- adrian
359 */
360 if (ConfigServerHide.hide_server_ips)
361 sendto_realops_flags(UMODE_ALL, L_ALL, "Connection to %s activated.",
362 conf->name);
363 else
364 sendto_realops_flags(UMODE_ALL, L_ALL, "Connection to %s[%s] activated.",
365 conf->name, aconf->host);
366
367 serv_connect(aconf, NULL);
368 /* We connect only one at time... */
369 return;
370 }
371 }
372 }
373
374 int
375 valid_servname(const char *name)
376 {
377 unsigned int length = 0;
378 unsigned int dots = 0;
379 const char *p = name;
380
381 for (; *p; ++p)
382 {
383 if (!IsServChar(*p))
384 return 0;
385
386 ++length;
387
388 if (*p == '.')
389 ++dots;
390 }
391
392 return dots != 0 && length <= HOSTLEN;
393 }
394
395 int
396 check_server(const char *name, struct Client *client_p)
397 {
398 dlink_node *ptr;
399 struct ConfItem *conf = NULL;
400 struct ConfItem *server_conf = NULL;
401 struct AccessItem *server_aconf = NULL;
402 struct AccessItem *aconf = NULL;
403 int error = -1;
404
405 assert(client_p != NULL);
406
407 if (client_p == NULL)
408 return(error);
409
410 if (strlen(name) > HOSTLEN)
411 return(-4);
412
413 /* loop through looking for all possible connect items that might work */
414 DLINK_FOREACH(ptr, server_items.head)
415 {
416 conf = ptr->data;
417 aconf = map_to_conf(conf);
418
419 if (!match(name, conf->name))
420 continue;
421
422 error = -3;
423
424 /* XXX: Fix me for IPv6 */
425 /* XXX sockhost is the IPv4 ip as a string */
426 if (match(aconf->host, client_p->host) ||
427 match(aconf->host, client_p->sockhost))
428 {
429 error = -2;
430 {
431 /* A NULL password is as good as a bad one */
432 if (EmptyString(client_p->localClient->passwd))
433 return(-2);
434
435 /* code in s_conf.c should not have allowed this to be NULL */
436 if (aconf->passwd == NULL)
437 return(-2);
438
439 if (IsConfEncrypted(aconf))
440 {
441 if (strcmp(aconf->passwd,
442 (const char *)crypt(client_p->localClient->passwd,
443 aconf->passwd)) == 0)
444 server_conf = conf;
445 }
446 else
447 {
448 if (strcmp(aconf->passwd, client_p->localClient->passwd) == 0)
449 server_conf = conf;
450 }
451 }
452 }
453 }
454
455 if (server_conf == NULL)
456 return(error);
457
458 attach_conf(client_p, server_conf);
459
460 server_aconf = map_to_conf(server_conf);
461
462 if (!IsConfTopicBurst(server_aconf))
463 {
464 ClearCap(client_p, CAP_TB);
465 ClearCap(client_p, CAP_TBURST);
466 }
467
468 if (aconf != NULL)
469 {
470 struct sockaddr_in *v4;
471 #ifdef IPV6
472 struct sockaddr_in6 *v6;
473 #endif
474 switch (aconf->aftype)
475 {
476 #ifdef IPV6
477 case AF_INET6:
478 v6 = (struct sockaddr_in6 *)&aconf->addr;
479
480 if (IN6_IS_ADDR_UNSPECIFIED(&v6->sin6_addr))
481 memcpy(&aconf->addr, &client_p->localClient->ip, sizeof(struct irc_ssaddr));
482 break;
483 #endif
484 case AF_INET:
485 v4 = (struct sockaddr_in *)&aconf->addr;
486
487 if (v4->sin_addr.s_addr == INADDR_NONE)
488 memcpy(&aconf->addr, &client_p->localClient->ip, sizeof(struct irc_ssaddr));
489 break;
490 }
491 }
492
493 return(0);
494 }
495
496 /* add_capability()
497 *
498 * inputs - string name of CAPAB
499 * - int flag of capability
500 * output - NONE
501 * side effects - Adds given capability name and bit mask to
502 * current supported capabilities. This allows
503 * modules to dynamically add or subtract their capability.
504 */
505 void
506 add_capability(const char *capab_name, int cap_flag, int add_to_default)
507 {
508 struct Capability *cap = MyMalloc(sizeof(*cap));
509
510 DupString(cap->name, capab_name);
511 cap->cap = cap_flag;
512 dlinkAdd(cap, &cap->node, &cap_list);
513
514 if (add_to_default)
515 default_server_capabs |= cap_flag;
516 }
517
518 /* delete_capability()
519 *
520 * inputs - string name of CAPAB
521 * output - NONE
522 * side effects - delete given capability from ones known.
523 */
524 int
525 delete_capability(const char *capab_name)
526 {
527 dlink_node *ptr;
528 dlink_node *next_ptr;
529 struct Capability *cap;
530
531 DLINK_FOREACH_SAFE(ptr, next_ptr, cap_list.head)
532 {
533 cap = ptr->data;
534
535 if (cap->cap != 0)
536 {
537 if (irccmp(cap->name, capab_name) == 0)
538 {
539 default_server_capabs &= ~(cap->cap);
540 dlinkDelete(ptr, &cap_list);
541 MyFree(cap->name);
542 cap->name = NULL;
543 MyFree(cap);
544 }
545 }
546 }
547
548 return 0;
549 }
550
551 /*
552 * find_capability()
553 *
554 * inputs - string name of capab to find
555 * output - 0 if not found CAPAB otherwise
556 * side effects - none
557 */
558 int
559 find_capability(const char *capab)
560 {
561 const dlink_node *ptr = NULL;
562
563 DLINK_FOREACH(ptr, cap_list.head)
564 {
565 const struct Capability *cap = ptr->data;
566
567 if (cap->cap && !irccmp(cap->name, capab))
568 return cap->cap;
569 }
570
571 return 0;
572 }
573
574 /* send_capabilities()
575 *
576 * inputs - Client pointer to send to
577 * - Pointer to AccessItem (for crypt)
578 * - int flag of capabilities that this server can send
579 * output - NONE
580 * side effects - send the CAPAB line to a server -orabidoo
581 *
582 */
583 void
584 send_capabilities(struct Client *client_p, struct AccessItem *aconf,
585 int cap_can_send)
586 {
587 struct Capability *cap=NULL;
588 char msgbuf[IRCD_BUFSIZE];
589 char *t;
590 int tl;
591 dlink_node *ptr;
592
593 t = msgbuf;
594
595 DLINK_FOREACH(ptr, cap_list.head)
596 {
597 cap = ptr->data;
598
599 if (cap->cap & (cap_can_send|default_server_capabs))
600 {
601 tl = ircsprintf(t, "%s ", cap->name);
602 t += tl;
603 }
604 }
605
606 *(t - 1) = '\0';
607 sendto_one(client_p, "CAPAB :%s", msgbuf);
608 }
609
610 /* sendnick_TS()
611 *
612 * inputs - client (server) to send nick towards
613 * - client to send nick for
614 * output - NONE
615 * side effects - NICK message is sent towards given client_p
616 */
617 void
618 sendnick_TS(struct Client *client_p, struct Client *target_p)
619 {
620 static char ubuf[12];
621
622 if (!IsClient(target_p))
623 return;
624
625 send_umode(NULL, target_p, 0, SEND_UMODES, ubuf);
626
627 if (ubuf[0] == '\0')
628 {
629 ubuf[0] = '+';
630 ubuf[1] = '\0';
631 }
632
633 /* XXX Both of these need to have a :me.name or :mySID!?!?! */
634 if (IsCapable(client_p, CAP_SVS))
635 {
636 if (HasID(target_p) && IsCapable(client_p, CAP_TS6))
637 sendto_one(client_p, ":%s UID %s %d %lu %s %s %s %s %s %lu :%s",
638 target_p->servptr->id,
639 target_p->name, target_p->hopcount + 1,
640 (unsigned long) target_p->tsinfo,
641 ubuf, target_p->username, target_p->host,
642 (MyClient(target_p) && IsIPSpoof(target_p)) ?
643 "0" : target_p->sockhost, target_p->id,
644 (unsigned long)target_p->servicestamp, target_p->info);
645 else
646 sendto_one(client_p, "NICK %s %d %lu %s %s %s %s %lu :%s",
647 target_p->name, target_p->hopcount + 1,
648 (unsigned long) target_p->tsinfo,
649 ubuf, target_p->username, target_p->host,
650 target_p->servptr->name, (unsigned long)target_p->servicestamp,
651 target_p->info);
652 }
653 else
654 {
655 if (HasID(target_p) && IsCapable(client_p, CAP_TS6))
656 sendto_one(client_p, ":%s UID %s %d %lu %s %s %s %s %s :%s",
657 target_p->servptr->id,
658 target_p->name, target_p->hopcount + 1,
659 (unsigned long) target_p->tsinfo,
660 ubuf, target_p->username, target_p->host,
661 (MyClient(target_p) && IsIPSpoof(target_p)) ?
662 "0" : target_p->sockhost, target_p->id, target_p->info);
663 else
664 sendto_one(client_p, "NICK %s %d %lu %s %s %s %s :%s",
665 target_p->name, target_p->hopcount + 1,
666 (unsigned long) target_p->tsinfo,
667 ubuf, target_p->username, target_p->host,
668 target_p->servptr->name, target_p->info);
669 }
670
671 if (IsConfAwayBurst((struct AccessItem *)map_to_conf(client_p->localClient->confs.head->data)))
672 if (!EmptyString(target_p->away))
673 sendto_one(client_p, ":%s AWAY :%s", target_p->name,
674 target_p->away);
675
676 }
677
678 /*
679 * show_capabilities - show current server capabilities
680 *
681 * inputs - pointer to a struct Client
682 * output - pointer to static string
683 * side effects - build up string representing capabilities of server listed
684 */
685 const char *
686 show_capabilities(struct Client *target_p)
687 {
688 static char msgbuf[IRCD_BUFSIZE];
689 char *t = msgbuf;
690 dlink_node *ptr;
691
692 t += ircsprintf(msgbuf, "TS ");
693
694 DLINK_FOREACH(ptr, cap_list.head)
695 {
696 const struct Capability *cap = ptr->data;
697
698 if (IsCapable(target_p, cap->cap))
699 t += ircsprintf(t, "%s ", cap->name);
700 }
701
702 *(t - 1) = '\0';
703 return msgbuf;
704 }
705
706 /* make_server()
707 *
708 * inputs - pointer to client struct
709 * output - pointer to struct Server
710 * side effects - add's an Server information block to a client
711 * if it was not previously allocated.
712 */
713 struct Server *
714 make_server(struct Client *client_p)
715 {
716 if (client_p->serv == NULL)
717 client_p->serv = MyMalloc(sizeof(struct Server));
718
719 return client_p->serv;
720 }
721
722 /* server_estab()
723 *
724 * inputs - pointer to a struct Client
725 * output -
726 * side effects -
727 */
728 void
729 server_estab(struct Client *client_p)
730 {
731 struct Client *target_p;
732 struct ConfItem *conf;
733 struct AccessItem *aconf=NULL;
734 char *host;
735 const char *inpath;
736 static char inpath_ip[HOSTLEN * 2 + USERLEN + 6];
737 dlink_node *ptr;
738 #ifdef HAVE_LIBCRYPTO
739 const COMP_METHOD *compression = NULL, *expansion = NULL;
740 #endif
741
742 assert(client_p != NULL);
743
744 strlcpy(inpath_ip, get_client_name(client_p, SHOW_IP), sizeof(inpath_ip));
745
746 inpath = get_client_name(client_p, MASK_IP); /* "refresh" inpath with host */
747 host = client_p->name;
748
749 if ((conf = find_conf_name(&client_p->localClient->confs, host, SERVER_TYPE))
750 == NULL)
751 {
752 /* This shouldn't happen, better tell the ops... -A1kmm */
753 sendto_realops_flags(UMODE_ALL, L_ALL, "Warning: Lost connect{} block "
754 "for server %s(this shouldn't happen)!", host);
755 exit_client(client_p, &me, "Lost connect{} block!");
756 return;
757 }
758
759 MyFree(client_p->localClient->passwd);
760 client_p->localClient->passwd = NULL;
761
762 /* Its got identd, since its a server */
763 SetGotId(client_p);
764
765 /* If there is something in the serv_list, it might be this
766 * connecting server..
767 */
768 if (!ServerInfo.hub && serv_list.head)
769 {
770 if (client_p != serv_list.head->data || serv_list.head->next)
771 {
772 ++ServerStats.is_ref;
773 sendto_one(client_p, "ERROR :I'm a leaf not a hub");
774 exit_client(client_p, &me, "I'm a leaf");
775 return;
776 }
777 }
778
779 aconf = map_to_conf(conf);
780
781 if (IsUnknown(client_p))
782 {
783 /* jdc -- 1. Use EmptyString(), not [0] index reference.
784 * 2. Check aconf->spasswd, not aconf->passwd.
785 */
786 if (!EmptyString(aconf->spasswd))
787 sendto_one(client_p, "PASS %s TS %d %s",
788 aconf->spasswd, TS_CURRENT, me.id);
789
790 /* Pass my info to the new server
791 *
792 * Pass on ZIP if supported
793 * Pass on TB if supported.
794 * - Dianora
795 */
796
797 send_capabilities(client_p, aconf,
798 (IsConfTopicBurst(aconf) ? CAP_TBURST|CAP_TB : 0));
799
800 sendto_one(client_p, "SERVER %s 1 :%s%s",
801 me.name, ConfigServerHide.hidden ? "(H) " : "", me.info);
802 }
803
804 sendto_one(client_p, "SVINFO %d %d 0 :%lu", TS_CURRENT, TS_MIN,
805 (unsigned long)CurrentTime);
806
807 /* assumption here is if they passed the correct TS version, they also passed an SID */
808 if (IsCapable(client_p, CAP_TS6))
809 hash_add_id(client_p);
810
811 /* XXX Does this ever happen? I don't think so -db */
812 detach_conf(client_p, OPER_TYPE);
813
814 /* *WARNING*
815 ** In the following code in place of plain server's
816 ** name we send what is returned by get_client_name
817 ** which may add the "sockhost" after the name. It's
818 ** *very* *important* that there is a SPACE between
819 ** the name and sockhost (if present). The receiving
820 ** server will start the information field from this
821 ** first blank and thus puts the sockhost into info.
822 ** ...a bit tricky, but you have been warned, besides
823 ** code is more neat this way... --msa
824 */
825 client_p->servptr = &me;
826
827 if (IsClosing(client_p))
828 return;
829
830 SetServer(client_p);
831
832 /* Update the capability combination usage counts. -A1kmm */
833 set_chcap_usage_counts(client_p);
834
835 /* Some day, all these lists will be consolidated *sigh* */
836 dlinkAdd(client_p, &client_p->lnode, &me.serv->server_list);
837
838 assert(dlinkFind(&unknown_list, client_p));
839
840 dlink_move_node(&client_p->localClient->lclient_node,
841 &unknown_list, &serv_list);
842
843 Count.myserver++;
844
845 dlinkAdd(client_p, make_dlink_node(), &global_serv_list);
846 hash_add_client(client_p);
847
848 /* doesnt duplicate client_p->serv if allocated this struct already */
849 make_server(client_p);
850
851 /* fixing eob timings.. -gnp */
852 client_p->localClient->firsttime = CurrentTime;
853
854 if (find_matching_name_conf(SERVICE_TYPE, client_p->name, NULL, NULL, 0))
855 AddFlag(client_p, FLAGS_SERVICE);
856
857 /* Show the real host/IP to admins */
858 #ifdef HAVE_LIBCRYPTO
859 if (client_p->localClient->fd.ssl)
860 {
861 compression = SSL_get_current_compression(client_p->localClient->fd.ssl);
862 expansion = SSL_get_current_expansion(client_p->localClient->fd.ssl);
863
864 sendto_realops_flags(UMODE_ALL, L_ADMIN,
865 "Link with %s established: [SSL: %s, Compression/Expansion method: %s/%s] (Capabilities: %s)",
866 inpath_ip, ssl_get_cipher(client_p->localClient->fd.ssl),
867 compression ? SSL_COMP_get_name(compression) : "NONE",
868 expansion ? SSL_COMP_get_name(expansion) : "NONE",
869 show_capabilities(client_p));
870 /* Now show the masked hostname/IP to opers */
871 sendto_realops_flags(UMODE_ALL, L_OPER,
872 "Link with %s established: [SSL: %s, Compression/Expansion method: %s/%s] (Capabilities: %s)",
873 inpath, ssl_get_cipher(client_p->localClient->fd.ssl),
874 compression ? SSL_COMP_get_name(compression) : "NONE",
875 expansion ? SSL_COMP_get_name(expansion) : "NONE",
876 show_capabilities(client_p));
877 ilog(LOG_TYPE_IRCD, "Link with %s established: [SSL: %s, Compression/Expansion method: %s/%s] (Capabilities: %s)",
878 inpath_ip, ssl_get_cipher(client_p->localClient->fd.ssl),
879 compression ? SSL_COMP_get_name(compression) : "NONE",
880 expansion ? SSL_COMP_get_name(expansion) : "NONE",
881 show_capabilities(client_p));
882 }
883 else
884 #endif
885 {
886 sendto_realops_flags(UMODE_ALL, L_ADMIN,
887 "Link with %s established: (Capabilities: %s)",
888 inpath_ip,show_capabilities(client_p));
889 /* Now show the masked hostname/IP to opers */
890 sendto_realops_flags(UMODE_ALL, L_OPER,
891 "Link with %s established: (Capabilities: %s)",
892 inpath,show_capabilities(client_p));
893 ilog(LOG_TYPE_IRCD, "Link with %s established: (Capabilities: %s)",
894 inpath_ip, show_capabilities(client_p));
895 }
896
897 fd_note(&client_p->localClient->fd, "Server: %s", client_p->name);
898
899 /* Old sendto_serv_but_one() call removed because we now
900 ** need to send different names to different servers
901 ** (domain name matching) Send new server to other servers.
902 */
903 DLINK_FOREACH(ptr, serv_list.head)
904 {
905 target_p = ptr->data;
906
907 if (target_p == client_p)
908 continue;
909
910 if (IsCapable(target_p, CAP_TS6) && HasID(client_p))
911 sendto_one(target_p, ":%s SID %s 2 %s :%s%s",
912 me.id, client_p->name, client_p->id,
913 IsHidden(client_p) ? "(H) " : "",
914 client_p->info);
915 else
916 sendto_one(target_p,":%s SERVER %s 2 :%s%s",
917 me.name, client_p->name,
918 IsHidden(client_p) ? "(H) " : "",
919 client_p->info);
920 }
921
922 /* Pass on my client information to the new server
923 **
924 ** First, pass only servers (idea is that if the link gets
925 ** cancelled beacause the server was already there,
926 ** there are no NICK's to be cancelled...). Of course,
927 ** if cancellation occurs, all this info is sent anyway,
928 ** and I guess the link dies when a read is attempted...? --msa
929 **
930 ** Note: Link cancellation to occur at this point means
931 ** that at least two servers from my fragment are building
932 ** up connection this other fragment at the same time, it's
933 ** a race condition, not the normal way of operation...
934 **
935 ** ALSO NOTE: using the get_client_name for server names--
936 ** see previous *WARNING*!!! (Also, original inpath
937 ** is destroyed...)
938 */
939
940 DLINK_FOREACH_PREV(ptr, global_serv_list.tail)
941 {
942 target_p = ptr->data;
943
944 /* target_p->from == target_p for target_p == client_p */
945 if (IsMe(target_p) || target_p->from == client_p)
946 continue;
947
948 if (IsCapable(client_p, CAP_TS6))
949 {
950 if (HasID(target_p))
951 sendto_one(client_p, ":%s SID %s %d %s :%s%s",
952 ID(target_p->servptr), target_p->name, target_p->hopcount+1,
953 target_p->id, IsHidden(target_p) ? "(H) " : "",
954 target_p->info);
955 else /* introducing non-ts6 server */
956 sendto_one(client_p, ":%s SERVER %s %d :%s%s",
957 ID(target_p->servptr), target_p->name, target_p->hopcount+1,
958 IsHidden(target_p) ? "(H) " : "", target_p->info);
959 }
960 else
961 sendto_one(client_p, ":%s SERVER %s %d :%s%s",
962 target_p->servptr->name, target_p->name, target_p->hopcount+1,
963 IsHidden(target_p) ? "(H) " : "", target_p->info);
964 }
965
966 server_burst(client_p);
967 }
968
969 /* server_burst()
970 *
971 * inputs - struct Client pointer server
972 * -
973 * output - none
974 * side effects - send a server burst
975 * bugs - still too long
976 */
977 static void
978 server_burst(struct Client *client_p)
979 {
980 /* Send it in the shortened format with the TS, if
981 ** it's a TS server; walk the list of channels, sending
982 ** all the nicks that haven't been sent yet for each
983 ** channel, then send the channel itself -- it's less
984 ** obvious than sending all nicks first, but on the
985 ** receiving side memory will be allocated more nicely
986 ** saving a few seconds in the handling of a split
987 ** -orabidoo
988 */
989
990 burst_all(client_p);
991
992 /* EOB stuff is now in burst_all */
993 /* Always send a PING after connect burst is done */
994 sendto_one(client_p, "PING :%s", ID_or_name(&me, client_p));
995 }
996
997 /* burst_all()
998 *
999 * inputs - pointer to server to send burst to
1000 * output - NONE
1001 * side effects - complete burst of channels/nicks is sent to client_p
1002 */
1003 static void
1004 burst_all(struct Client *client_p)
1005 {
1006 dlink_node *ptr = NULL;
1007
1008 DLINK_FOREACH(ptr, global_channel_list.head)
1009 {
1010 struct Channel *chptr = ptr->data;
1011
1012 if (dlink_list_length(&chptr->members) != 0)
1013 {
1014 burst_members(client_p, chptr);
1015 send_channel_modes(client_p, chptr);
1016
1017 if (IsCapable(client_p, CAP_TBURST) ||
1018 IsCapable(client_p, CAP_TB))
1019 send_tb(client_p, chptr);
1020 }
1021 }
1022
1023 /* also send out those that are not on any channel
1024 */
1025 DLINK_FOREACH(ptr, global_client_list.head)
1026 {
1027 struct Client *target_p = ptr->data;
1028
1029 if (!HasFlag(target_p, FLAGS_BURSTED) && target_p->from != client_p)
1030 sendnick_TS(client_p, target_p);
1031
1032 DelFlag(target_p, FLAGS_BURSTED);
1033 }
1034
1035 /* We send the time we started the burst, and let the remote host determine an EOB time,
1036 ** as otherwise we end up sending a EOB of 0 Sending here means it gets sent last -- fl
1037 */
1038 /* Its simpler to just send EOB and use the time its been connected.. --fl_ */
1039 if (IsCapable(client_p, CAP_EOB))
1040 sendto_one(client_p, ":%s EOB", ID_or_name(&me, client_p));
1041 }
1042
1043 /*
1044 * send_tb
1045 *
1046 * inputs - pointer to Client
1047 * - pointer to channel
1048 * output - NONE
1049 * side effects - Called on a server burst when
1050 * server is CAP_TB|CAP_TBURST capable
1051 */
1052 static void
1053 send_tb(struct Client *client_p, struct Channel *chptr)
1054 {
1055 /*
1056 * We may also send an empty topic here, but only if topic_time isn't 0,
1057 * i.e. if we had a topic that got unset. This is required for syncing
1058 * topics properly.
1059 *
1060 * Imagine the following scenario: Our downlink introduces a channel
1061 * to us with a TS that is equal to ours, but the channel topic on
1062 * their side got unset while the servers were in splitmode, which means
1063 * their 'topic' is newer. They simply wanted to unset it, so we have to
1064 * deal with it in a more sophisticated fashion instead of just resetting
1065 * it to their old topic they had before. Read m_tburst.c:ms_tburst
1066 * for further information -Michael
1067 */
1068 if (chptr->topic_time != 0)
1069 {
1070 if (IsCapable(client_p, CAP_TBURST))
1071 sendto_one(client_p, ":%s TBURST %lu %s %lu %s :%s",
1072 me.name, (unsigned long)chptr->channelts, chptr->chname,
1073 (unsigned long)chptr->topic_time,
1074 chptr->topic_info,
1075 chptr->topic);
1076 else if (IsCapable(client_p, CAP_TB))
1077 {
1078 if (ConfigChannel.burst_topicwho)
1079 {
1080 sendto_one(client_p, ":%s TB %s %lu %s :%s",
1081 me.name, chptr->chname,
1082 (unsigned long)chptr->topic_time,
1083 chptr->topic_info, chptr->topic);
1084 }
1085 else
1086 {
1087 sendto_one(client_p, ":%s TB %s %lu :%s",
1088 me.name, chptr->chname,
1089 (unsigned long)chptr->topic_time,
1090 chptr->topic);
1091 }
1092 }
1093 }
1094 }
1095
1096 /* burst_members()
1097 *
1098 * inputs - pointer to server to send members to
1099 * - dlink_list pointer to membership list to send
1100 * output - NONE
1101 * side effects -
1102 */
1103 static void
1104 burst_members(struct Client *client_p, struct Channel *chptr)
1105 {
1106 struct Client *target_p;
1107 struct Membership *ms;
1108 dlink_node *ptr;
1109
1110 DLINK_FOREACH(ptr, chptr->members.head)
1111 {
1112 ms = ptr->data;
1113 target_p = ms->client_p;
1114
1115 if (!HasFlag(target_p, FLAGS_BURSTED))
1116 {
1117 AddFlag(target_p, FLAGS_BURSTED);
1118
1119 if (target_p->from != client_p)
1120 sendnick_TS(client_p, target_p);
1121 }
1122 }
1123 }
1124
1125 /* New server connection code
1126 * Based upon the stuff floating about in s_bsd.c
1127 * -- adrian
1128 */
1129
1130 /* serv_connect() - initiate a server connection
1131 *
1132 * inputs - pointer to conf
1133 * - pointer to client doing the connect
1134 * output -
1135 * side effects -
1136 *
1137 * This code initiates a connection to a server. It first checks to make
1138 * sure the given server exists. If this is the case, it creates a socket,
1139 * creates a client, saves the socket information in the client, and
1140 * initiates a connection to the server through comm_connect_tcp(). The
1141 * completion of this goes through serv_completed_connection().
1142 *
1143 * We return 1 if the connection is attempted, since we don't know whether
1144 * it suceeded or not, and 0 if it fails in here somewhere.
1145 */
1146 int
1147 serv_connect(struct AccessItem *aconf, struct Client *by)
1148 {
1149 struct ConfItem *conf;
1150 struct Client *client_p;
1151 char buf[HOSTIPLEN];
1152
1153 /* conversion structs */
1154 struct sockaddr_in *v4;
1155 /* Make sure aconf is useful */
1156 assert(aconf != NULL);
1157
1158 if(aconf == NULL)
1159 return (0);
1160
1161 /* XXX should be passing struct ConfItem in the first place */
1162 conf = unmap_conf_item(aconf);
1163
1164 /* log */
1165 getnameinfo((struct sockaddr *)&aconf->addr, aconf->addr.ss_len,
1166 buf, sizeof(buf), NULL, 0, NI_NUMERICHOST);
1167 ilog(LOG_TYPE_IRCD, "Connect to %s[%s] @%s", aconf->user, aconf->host,
1168 buf);
1169
1170 /* Still processing a DNS lookup? -> exit */
1171 if (aconf->dns_pending)
1172 {
1173 sendto_realops_flags(UMODE_ALL, L_ALL,
1174 "Error connecting to %s: DNS lookup for connect{} in progress.",
1175 conf->name);
1176 return (0);
1177 }
1178
1179 if (aconf->dns_failed)
1180 {
1181 sendto_realops_flags(UMODE_ALL, L_ALL,
1182 "Error connecting to %s: DNS lookup for connect{} failed.",
1183 conf->name);
1184 return (0);
1185 }
1186
1187 /* Make sure this server isn't already connected
1188 * Note: aconf should ALWAYS be a valid C: line
1189 */
1190 if ((client_p = hash_find_server(conf->name)) != NULL)
1191 {
1192 sendto_realops_flags(UMODE_ALL, L_ADMIN,
1193 "Server %s already present from %s",
1194 conf->name, get_client_name(client_p, SHOW_IP));
1195 sendto_realops_flags(UMODE_ALL, L_OPER,
1196 "Server %s already present from %s",
1197 conf->name, get_client_name(client_p, MASK_IP));
1198 if (by && IsClient(by) && !MyClient(by))
1199 sendto_one(by, ":%s NOTICE %s :Server %s already present from %s",
1200 me.name, by->name, conf->name,
1201 get_client_name(client_p, MASK_IP));
1202 return (0);
1203 }
1204
1205 /* Create a local client */
1206 client_p = make_client(NULL);
1207
1208 /* Copy in the server, hostname, fd */
1209 strlcpy(client_p->name, conf->name, sizeof(client_p->name));
1210 strlcpy(client_p->host, aconf->host, sizeof(client_p->host));
1211
1212 /* We already converted the ip once, so lets use it - stu */
1213 strlcpy(client_p->sockhost, buf, sizeof(client_p->sockhost));
1214
1215 /* create a socket for the server connection */
1216 if (comm_open(&client_p->localClient->fd, aconf->addr.ss.ss_family,
1217 SOCK_STREAM, 0, NULL) < 0)
1218 {
1219 /* Eek, failure to create the socket */
1220 report_error(L_ALL,
1221 "opening stream socket to %s: %s", conf->name, errno);
1222 SetDead(client_p);
1223 exit_client(client_p, &me, "Connection failed");
1224 return (0);
1225 }
1226
1227 /* servernames are always guaranteed under HOSTLEN chars */
1228 fd_note(&client_p->localClient->fd, "Server: %s", conf->name);
1229
1230 /* Attach config entries to client here rather than in
1231 * serv_connect_callback(). This to avoid null pointer references.
1232 */
1233 if (!attach_connect_block(client_p, conf->name, aconf->host))
1234 {
1235 sendto_realops_flags(UMODE_ALL, L_ALL,
1236 "Host %s is not enabled for connecting:no C/N-line",
1237 conf->name);
1238 if (by && IsClient(by) && !MyClient(by))
1239 sendto_one(by, ":%s NOTICE %s :Connect to host %s failed.",
1240 me.name, by->name, client_p->name);
1241 SetDead(client_p);
1242 exit_client(client_p, client_p, "Connection failed");
1243 return (0);
1244 }
1245
1246 /* at this point we have a connection in progress and C/N lines
1247 * attached to the client, the socket info should be saved in the
1248 * client and it should either be resolved or have a valid address.
1249 *
1250 * The socket has been connected or connect is in progress.
1251 */
1252 make_server(client_p);
1253
1254 if (by && IsClient(by))
1255 strlcpy(client_p->serv->by, by->name, sizeof(client_p->serv->by));
1256 else
1257 strlcpy(client_p->serv->by, "AutoConn.", sizeof(client_p->serv->by));
1258
1259 SetConnecting(client_p);
1260 dlinkAdd(client_p, &client_p->node, &global_client_list);
1261 /* from def_fam */
1262 client_p->localClient->aftype = aconf->aftype;
1263
1264 /* Now, initiate the connection */
1265 /* XXX assume that a non 0 type means a specific bind address
1266 * for this connect.
1267 */
1268 switch (aconf->aftype)
1269 {
1270 case AF_INET:
1271 v4 = (struct sockaddr_in*)&aconf->bind;
1272 if (v4->sin_addr.s_addr != 0)
1273 {
1274 struct irc_ssaddr ipn;
1275 memset(&ipn, 0, sizeof(struct irc_ssaddr));
1276 ipn.ss.ss_family = AF_INET;
1277 ipn.ss_port = 0;
1278 memcpy(&ipn, &aconf->bind, sizeof(struct irc_ssaddr));
1279 comm_connect_tcp(&client_p->localClient->fd, aconf->host, aconf->port,
1280 (struct sockaddr *)&ipn, ipn.ss_len,
1281 serv_connect_callback, client_p, aconf->aftype,
1282 CONNECTTIMEOUT);
1283 }
1284 else if (ServerInfo.specific_ipv4_vhost)
1285 {
1286 struct irc_ssaddr ipn;
1287 memset(&ipn, 0, sizeof(struct irc_ssaddr));
1288 ipn.ss.ss_family = AF_INET;
1289 ipn.ss_port = 0;
1290 memcpy(&ipn, &ServerInfo.ip, sizeof(struct irc_ssaddr));
1291 comm_connect_tcp(&client_p->localClient->fd, aconf->host, aconf->port,
1292 (struct sockaddr *)&ipn, ipn.ss_len,
1293 serv_connect_callback, client_p, aconf->aftype,
1294 CONNECTTIMEOUT);
1295 }
1296 else
1297 comm_connect_tcp(&client_p->localClient->fd, aconf->host, aconf->port,
1298 NULL, 0, serv_connect_callback, client_p, aconf->aftype,
1299 CONNECTTIMEOUT);
1300 break;
1301 #ifdef IPV6
1302 case AF_INET6:
1303 {
1304 struct irc_ssaddr ipn;
1305 struct sockaddr_in6 *v6;
1306 struct sockaddr_in6 *v6conf;
1307
1308 memset(&ipn, 0, sizeof(struct irc_ssaddr));
1309 v6conf = (struct sockaddr_in6 *)&aconf->bind;
1310 v6 = (struct sockaddr_in6 *)&ipn;
1311
1312 if (memcmp(&v6conf->sin6_addr, &v6->sin6_addr,
1313 sizeof(struct in6_addr)) != 0)
1314 {
1315 memcpy(&ipn, &aconf->bind, sizeof(struct irc_ssaddr));
1316 ipn.ss.ss_family = AF_INET6;
1317 ipn.ss_port = 0;
1318 comm_connect_tcp(&client_p->localClient->fd,
1319 aconf->host, aconf->port,
1320 (struct sockaddr *)&ipn, ipn.ss_len,
1321 serv_connect_callback, client_p,
1322 aconf->aftype, CONNECTTIMEOUT);
1323 }
1324 else if (ServerInfo.specific_ipv6_vhost)
1325 {
1326 memcpy(&ipn, &ServerInfo.ip6, sizeof(struct irc_ssaddr));
1327 ipn.ss.ss_family = AF_INET6;
1328 ipn.ss_port = 0;
1329 comm_connect_tcp(&client_p->localClient->fd,
1330 aconf->host, aconf->port,
1331 (struct sockaddr *)&ipn, ipn.ss_len,
1332 serv_connect_callback, client_p,
1333 aconf->aftype, CONNECTTIMEOUT);
1334 }
1335 else
1336 comm_connect_tcp(&client_p->localClient->fd,
1337 aconf->host, aconf->port,
1338 NULL, 0, serv_connect_callback, client_p,
1339 aconf->aftype, CONNECTTIMEOUT);
1340 }
1341 #endif
1342 }
1343 return (1);
1344 }
1345
1346 #ifdef HAVE_LIBCRYPTO
1347 static void
1348 finish_ssl_server_handshake(struct Client *client_p)
1349 {
1350 struct ConfItem *conf=NULL;
1351 struct AccessItem *aconf=NULL;
1352
1353 conf = find_conf_name(&client_p->localClient->confs,
1354 client_p->name, SERVER_TYPE);
1355 if (conf == NULL)
1356 {
1357 sendto_realops_flags(UMODE_ALL, L_ADMIN,
1358 "Lost connect{} block for %s", get_client_name(client_p, HIDE_IP));
1359 sendto_realops_flags(UMODE_ALL, L_OPER,
1360 "Lost connect{} block for %s", get_client_name(client_p, MASK_IP));
1361
1362 exit_client(client_p, &me, "Lost connect{} block");
1363 return;
1364 }
1365
1366 aconf = map_to_conf(conf);
1367
1368 /* jdc -- Check and send spasswd, not passwd. */
1369 if (!EmptyString(aconf->spasswd))
1370 sendto_one(client_p, "PASS %s TS %d %s",
1371 aconf->spasswd, TS_CURRENT, me.id);
1372
1373 send_capabilities(client_p, aconf,
1374 (IsConfTopicBurst(aconf) ? CAP_TBURST|CAP_TB : 0));
1375
1376 sendto_one(client_p, "SERVER %s 1 :%s%s",
1377 me.name, ConfigServerHide.hidden ? "(H) " : "",
1378 me.info);
1379
1380 /* If we've been marked dead because a send failed, just exit
1381 * here now and save everyone the trouble of us ever existing.
1382 */
1383 if (IsDead(client_p))
1384 {
1385 sendto_realops_flags(UMODE_ALL, L_ADMIN,
1386 "%s[%s] went dead during handshake",
1387 client_p->name,
1388 client_p->host);
1389 sendto_realops_flags(UMODE_ALL, L_OPER,
1390 "%s went dead during handshake", client_p->name);
1391 return;
1392 }
1393
1394 /* don't move to serv_list yet -- we haven't sent a burst! */
1395 /* If we get here, we're ok, so lets start reading some data */
1396 comm_setselect(&client_p->localClient->fd, COMM_SELECT_READ, read_packet, client_p, 0);
1397 }
1398
1399 static void
1400 ssl_server_handshake(fde_t *fd, struct Client *client_p)
1401 {
1402 int ret;
1403 int err;
1404
1405 ret = SSL_connect(client_p->localClient->fd.ssl);
1406
1407 if (ret <= 0)
1408 {
1409 switch ((err = SSL_get_error(client_p->localClient->fd.ssl, ret)))
1410 {
1411 case SSL_ERROR_WANT_WRITE:
1412 comm_setselect(&client_p->localClient->fd, COMM_SELECT_WRITE,
1413 (PF *)ssl_server_handshake, client_p, 0);
1414 return;
1415 case SSL_ERROR_WANT_READ:
1416 comm_setselect(&client_p->localClient->fd, COMM_SELECT_READ,
1417 (PF *)ssl_server_handshake, client_p, 0);
1418 return;
1419 default:
1420 {
1421 const char *sslerr = ERR_error_string(ERR_get_error(), NULL);
1422 sendto_realops_flags(UMODE_ALL, L_ALL,
1423 "Error connecting to %s: %s", client_p->name,
1424 sslerr ? sslerr : "unknown SSL error");
1425 exit_client(client_p, client_p, "Error during SSL handshake");
1426 return;
1427 }
1428 }
1429 }
1430
1431 finish_ssl_server_handshake(client_p);
1432 }
1433
1434 static void
1435 ssl_connect_init(struct Client *client_p, struct AccessItem *aconf, fde_t *fd)
1436 {
1437 if ((client_p->localClient->fd.ssl = SSL_new(ServerInfo.client_ctx)) == NULL)
1438 {
1439 ilog(LOG_TYPE_IRCD, "SSL_new() ERROR! -- %s",
1440 ERR_error_string(ERR_get_error(), NULL));
1441 SetDead(client_p);
1442 exit_client(client_p, client_p, "SSL_new failed");
1443 return;
1444 }
1445
1446 SSL_set_fd(fd->ssl, fd->fd);
1447
1448 if (!EmptyString(aconf->cipher_list))
1449 SSL_set_cipher_list(client_p->localClient->fd.ssl, aconf->cipher_list);
1450
1451 ssl_server_handshake(NULL, client_p);
1452 }
1453 #endif
1454
1455 /* serv_connect_callback() - complete a server connection.
1456 *
1457 * This routine is called after the server connection attempt has
1458 * completed. If unsucessful, an error is sent to ops and the client
1459 * is closed. If sucessful, it goes through the initialisation/check
1460 * procedures, the capabilities are sent, and the socket is then
1461 * marked for reading.
1462 */
1463 static void
1464 serv_connect_callback(fde_t *fd, int status, void *data)
1465 {
1466 struct Client *client_p = data;
1467 struct ConfItem *conf=NULL;
1468 struct AccessItem *aconf=NULL;
1469
1470 /* First, make sure its a real client! */
1471 assert(client_p != NULL);
1472 assert(&client_p->localClient->fd == fd);
1473
1474 /* Next, for backward purposes, record the ip of the server */
1475 memcpy(&client_p->localClient->ip, &fd->connect.hostaddr,
1476 sizeof(struct irc_ssaddr));
1477 /* Check the status */
1478 if (status != COMM_OK)
1479 {
1480 /* We have an error, so report it and quit
1481 * Admins get to see any IP, mere opers don't *sigh*
1482 */
1483 if (ConfigServerHide.hide_server_ips)
1484 sendto_realops_flags(UMODE_ALL, L_ADMIN,
1485 "Error connecting to %s: %s",
1486 client_p->name, comm_errstr(status));
1487 else
1488 sendto_realops_flags(UMODE_ALL, L_ADMIN,
1489 "Error connecting to %s[%s]: %s", client_p->name,
1490 client_p->host, comm_errstr(status));
1491
1492 sendto_realops_flags(UMODE_ALL, L_OPER,
1493 "Error connecting to %s: %s",
1494 client_p->name, comm_errstr(status));
1495
1496 /* If a fd goes bad, call dead_link() the socket is no
1497 * longer valid for reading or writing.
1498 */
1499 dead_link_on_write(client_p, 0);
1500 return;
1501 }
1502
1503 /* COMM_OK, so continue the connection procedure */
1504 /* Get the C/N lines */
1505 conf = find_conf_name(&client_p->localClient->confs,
1506 client_p->name, SERVER_TYPE);
1507 if (conf == NULL)
1508 {
1509 sendto_realops_flags(UMODE_ALL, L_ADMIN,
1510 "Lost connect{} block for %s", get_client_name(client_p, HIDE_IP));
1511 sendto_realops_flags(UMODE_ALL, L_OPER,
1512 "Lost connect{} block for %s", get_client_name(client_p, MASK_IP));
1513
1514 exit_client(client_p, &me, "Lost connect{} block");
1515 return;
1516 }
1517
1518 aconf = map_to_conf(conf);
1519 /* Next, send the initial handshake */
1520 SetHandshake(client_p);
1521
1522 #ifdef HAVE_LIBCRYPTO
1523 if (IsConfSSL(aconf))
1524 {
1525 ssl_connect_init(client_p, aconf, fd);
1526 return;
1527 }
1528 #endif
1529
1530 /* jdc -- Check and send spasswd, not passwd. */
1531 if (!EmptyString(aconf->spasswd))
1532 sendto_one(client_p, "PASS %s TS %d %s",
1533 aconf->spasswd, TS_CURRENT, me.id);
1534
1535 send_capabilities(client_p, aconf,
1536 (IsConfTopicBurst(aconf) ? CAP_TBURST|CAP_TB : 0));
1537
1538 sendto_one(client_p, "SERVER %s 1 :%s%s",
1539 me.name, ConfigServerHide.hidden ? "(H) " : "",
1540 me.info);
1541
1542 /* If we've been marked dead because a send failed, just exit
1543 * here now and save everyone the trouble of us ever existing.
1544 */
1545 if (IsDead(client_p))
1546 {
1547 sendto_realops_flags(UMODE_ALL, L_ADMIN,
1548 "%s[%s] went dead during handshake",
1549 client_p->name,
1550 client_p->host);
1551 sendto_realops_flags(UMODE_ALL, L_OPER,
1552 "%s went dead during handshake", client_p->name);
1553 return;
1554 }
1555
1556 /* don't move to serv_list yet -- we haven't sent a burst! */
1557 /* If we get here, we're ok, so lets start reading some data */
1558 comm_setselect(fd, COMM_SELECT_READ, read_packet, client_p, 0);
1559 }
1560
1561 struct Client *
1562 find_servconn_in_progress(const char *name)
1563 {
1564 dlink_node *ptr;
1565 struct Client *cptr;
1566
1567 DLINK_FOREACH(ptr, unknown_list.head)
1568 {
1569 cptr = ptr->data;
1570
1571 if (cptr && cptr->name[0])
1572 if (match(name, cptr->name))
1573 return cptr;
1574 }
1575
1576 return NULL;
1577 }

Properties

Name Value
svn:eol-style native
svn:keywords Id Revision

svnadmin@ircd-hybrid.org
ViewVC Help
Powered by ViewVC 1.1.26