/[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 1472 - (show annotations)
Sun Jul 22 12:03:18 2012 UTC (8 years ago) by michael
File MIME type: text/x-chdr
File size: 45337 byte(s)
- remove CAP_TB
- add proper TS6 support to TBURST

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 = has_wildcards(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 /* loop through looking for all possible connect items that might work */
408 DLINK_FOREACH(ptr, server_items.head)
409 {
410 conf = ptr->data;
411 aconf = map_to_conf(conf);
412
413 if (!match(name, conf->name))
414 continue;
415
416 error = -3;
417
418 /* XXX: Fix me for IPv6 */
419 /* XXX sockhost is the IPv4 ip as a string */
420 if (match(aconf->host, client_p->host) ||
421 match(aconf->host, client_p->sockhost))
422 {
423 error = -2;
424
425 if (!match_conf_password(client_p->localClient->passwd, aconf))
426 return -2;
427
428 server_conf = conf;
429 }
430 }
431
432 if (server_conf == NULL)
433 return(error);
434
435 attach_conf(client_p, server_conf);
436
437 server_aconf = map_to_conf(server_conf);
438
439 if (!IsConfTopicBurst(server_aconf))
440 ClearCap(client_p, CAP_TBURST);
441
442 if (aconf != NULL)
443 {
444 struct sockaddr_in *v4;
445 #ifdef IPV6
446 struct sockaddr_in6 *v6;
447 #endif
448 switch (aconf->aftype)
449 {
450 #ifdef IPV6
451 case AF_INET6:
452 v6 = (struct sockaddr_in6 *)&aconf->addr;
453
454 if (IN6_IS_ADDR_UNSPECIFIED(&v6->sin6_addr))
455 memcpy(&aconf->addr, &client_p->localClient->ip, sizeof(struct irc_ssaddr));
456 break;
457 #endif
458 case AF_INET:
459 v4 = (struct sockaddr_in *)&aconf->addr;
460
461 if (v4->sin_addr.s_addr == INADDR_NONE)
462 memcpy(&aconf->addr, &client_p->localClient->ip, sizeof(struct irc_ssaddr));
463 break;
464 }
465 }
466
467 return(0);
468 }
469
470 /* add_capability()
471 *
472 * inputs - string name of CAPAB
473 * - int flag of capability
474 * output - NONE
475 * side effects - Adds given capability name and bit mask to
476 * current supported capabilities. This allows
477 * modules to dynamically add or subtract their capability.
478 */
479 void
480 add_capability(const char *capab_name, int cap_flag, int add_to_default)
481 {
482 struct Capability *cap = MyMalloc(sizeof(*cap));
483
484 DupString(cap->name, capab_name);
485 cap->cap = cap_flag;
486 dlinkAdd(cap, &cap->node, &cap_list);
487
488 if (add_to_default)
489 default_server_capabs |= cap_flag;
490 }
491
492 /* delete_capability()
493 *
494 * inputs - string name of CAPAB
495 * output - NONE
496 * side effects - delete given capability from ones known.
497 */
498 int
499 delete_capability(const char *capab_name)
500 {
501 dlink_node *ptr;
502 dlink_node *next_ptr;
503 struct Capability *cap;
504
505 DLINK_FOREACH_SAFE(ptr, next_ptr, cap_list.head)
506 {
507 cap = ptr->data;
508
509 if (cap->cap != 0)
510 {
511 if (irccmp(cap->name, capab_name) == 0)
512 {
513 default_server_capabs &= ~(cap->cap);
514 dlinkDelete(ptr, &cap_list);
515 MyFree(cap->name);
516 cap->name = NULL;
517 MyFree(cap);
518 }
519 }
520 }
521
522 return 0;
523 }
524
525 /*
526 * find_capability()
527 *
528 * inputs - string name of capab to find
529 * output - 0 if not found CAPAB otherwise
530 * side effects - none
531 */
532 int
533 find_capability(const char *capab)
534 {
535 const dlink_node *ptr = NULL;
536
537 DLINK_FOREACH(ptr, cap_list.head)
538 {
539 const struct Capability *cap = ptr->data;
540
541 if (cap->cap && !irccmp(cap->name, capab))
542 return cap->cap;
543 }
544
545 return 0;
546 }
547
548 /* send_capabilities()
549 *
550 * inputs - Client pointer to send to
551 * - Pointer to AccessItem (for crypt)
552 * - int flag of capabilities that this server can send
553 * output - NONE
554 * side effects - send the CAPAB line to a server -orabidoo
555 *
556 */
557 void
558 send_capabilities(struct Client *client_p, struct AccessItem *aconf,
559 int cap_can_send)
560 {
561 struct Capability *cap=NULL;
562 char msgbuf[IRCD_BUFSIZE];
563 char *t;
564 int tl;
565 dlink_node *ptr;
566
567 t = msgbuf;
568
569 DLINK_FOREACH(ptr, cap_list.head)
570 {
571 cap = ptr->data;
572
573 if (cap->cap & (cap_can_send|default_server_capabs))
574 {
575 tl = ircsprintf(t, "%s ", cap->name);
576 t += tl;
577 }
578 }
579
580 *(t - 1) = '\0';
581 sendto_one(client_p, "CAPAB :%s", msgbuf);
582 }
583
584 /* sendnick_TS()
585 *
586 * inputs - client (server) to send nick towards
587 * - client to send nick for
588 * output - NONE
589 * side effects - NICK message is sent towards given client_p
590 */
591 void
592 sendnick_TS(struct Client *client_p, struct Client *target_p)
593 {
594 static char ubuf[12];
595
596 if (!IsClient(target_p))
597 return;
598
599 send_umode(NULL, target_p, 0, SEND_UMODES, ubuf);
600
601 if (ubuf[0] == '\0')
602 {
603 ubuf[0] = '+';
604 ubuf[1] = '\0';
605 }
606
607 /* XXX Both of these need to have a :me.name or :mySID!?!?! */
608 if (IsCapable(client_p, CAP_SVS))
609 {
610 if (HasID(target_p) && IsCapable(client_p, CAP_TS6))
611 sendto_one(client_p, ":%s UID %s %d %lu %s %s %s %s %s %lu :%s",
612 target_p->servptr->id,
613 target_p->name, target_p->hopcount + 1,
614 (unsigned long) target_p->tsinfo,
615 ubuf, target_p->username, target_p->host,
616 (MyClient(target_p) && IsIPSpoof(target_p)) ?
617 "0" : target_p->sockhost, target_p->id,
618 (unsigned long)target_p->servicestamp, target_p->info);
619 else
620 sendto_one(client_p, "NICK %s %d %lu %s %s %s %s %lu :%s",
621 target_p->name, target_p->hopcount + 1,
622 (unsigned long) target_p->tsinfo,
623 ubuf, target_p->username, target_p->host,
624 target_p->servptr->name, (unsigned long)target_p->servicestamp,
625 target_p->info);
626 }
627 else
628 {
629 if (HasID(target_p) && IsCapable(client_p, CAP_TS6))
630 sendto_one(client_p, ":%s UID %s %d %lu %s %s %s %s %s :%s",
631 target_p->servptr->id,
632 target_p->name, target_p->hopcount + 1,
633 (unsigned long) target_p->tsinfo,
634 ubuf, target_p->username, target_p->host,
635 (MyClient(target_p) && IsIPSpoof(target_p)) ?
636 "0" : target_p->sockhost, target_p->id, target_p->info);
637 else
638 sendto_one(client_p, "NICK %s %d %lu %s %s %s %s :%s",
639 target_p->name, target_p->hopcount + 1,
640 (unsigned long) target_p->tsinfo,
641 ubuf, target_p->username, target_p->host,
642 target_p->servptr->name, target_p->info);
643 }
644
645 if (IsConfAwayBurst((struct AccessItem *)map_to_conf(client_p->localClient->confs.head->data)))
646 if (!EmptyString(target_p->away))
647 sendto_one(client_p, ":%s AWAY :%s", ID_or_name(target_p, client_p),
648 target_p->away);
649
650 }
651
652 /*
653 * show_capabilities - show current server capabilities
654 *
655 * inputs - pointer to a struct Client
656 * output - pointer to static string
657 * side effects - build up string representing capabilities of server listed
658 */
659 const char *
660 show_capabilities(struct Client *target_p)
661 {
662 static char msgbuf[IRCD_BUFSIZE];
663 char *t = msgbuf;
664 dlink_node *ptr;
665
666 t += ircsprintf(msgbuf, "TS ");
667
668 DLINK_FOREACH(ptr, cap_list.head)
669 {
670 const struct Capability *cap = ptr->data;
671
672 if (IsCapable(target_p, cap->cap))
673 t += ircsprintf(t, "%s ", cap->name);
674 }
675
676 *(t - 1) = '\0';
677 return msgbuf;
678 }
679
680 /* make_server()
681 *
682 * inputs - pointer to client struct
683 * output - pointer to struct Server
684 * side effects - add's an Server information block to a client
685 * if it was not previously allocated.
686 */
687 struct Server *
688 make_server(struct Client *client_p)
689 {
690 if (client_p->serv == NULL)
691 client_p->serv = MyMalloc(sizeof(struct Server));
692
693 return client_p->serv;
694 }
695
696 /* server_estab()
697 *
698 * inputs - pointer to a struct Client
699 * output -
700 * side effects -
701 */
702 void
703 server_estab(struct Client *client_p)
704 {
705 struct Client *target_p;
706 struct ConfItem *conf;
707 struct AccessItem *aconf=NULL;
708 char *host;
709 const char *inpath;
710 static char inpath_ip[HOSTLEN * 2 + USERLEN + 6];
711 dlink_node *ptr;
712 #ifdef HAVE_LIBCRYPTO
713 const COMP_METHOD *compression = NULL, *expansion = NULL;
714 #endif
715
716 assert(client_p != NULL);
717
718 strlcpy(inpath_ip, get_client_name(client_p, SHOW_IP), sizeof(inpath_ip));
719
720 inpath = get_client_name(client_p, MASK_IP); /* "refresh" inpath with host */
721 host = client_p->name;
722
723 if ((conf = find_conf_name(&client_p->localClient->confs, host, SERVER_TYPE))
724 == NULL)
725 {
726 /* This shouldn't happen, better tell the ops... -A1kmm */
727 sendto_realops_flags(UMODE_ALL, L_ALL, "Warning: Lost connect{} block "
728 "for server %s(this shouldn't happen)!", host);
729 exit_client(client_p, &me, "Lost connect{} block!");
730 return;
731 }
732
733 MyFree(client_p->localClient->passwd);
734 client_p->localClient->passwd = NULL;
735
736 /* Its got identd, since its a server */
737 SetGotId(client_p);
738
739 /* If there is something in the serv_list, it might be this
740 * connecting server..
741 */
742 if (!ServerInfo.hub && serv_list.head)
743 {
744 if (client_p != serv_list.head->data || serv_list.head->next)
745 {
746 ++ServerStats.is_ref;
747 sendto_one(client_p, "ERROR :I'm a leaf not a hub");
748 exit_client(client_p, &me, "I'm a leaf");
749 return;
750 }
751 }
752
753 aconf = map_to_conf(conf);
754
755 if (IsUnknown(client_p))
756 {
757 /* jdc -- 1. Use EmptyString(), not [0] index reference.
758 * 2. Check aconf->spasswd, not aconf->passwd.
759 */
760 if (!EmptyString(aconf->spasswd))
761 sendto_one(client_p, "PASS %s TS %d %s",
762 aconf->spasswd, TS_CURRENT, me.id);
763
764 /* Pass my info to the new server
765 *
766 * Pass on ZIP if supported
767 * Pass on TB if supported.
768 * - Dianora
769 */
770
771 send_capabilities(client_p, aconf,
772 (IsConfTopicBurst(aconf) ? CAP_TBURST : 0));
773
774 sendto_one(client_p, "SERVER %s 1 :%s%s",
775 me.name, ConfigServerHide.hidden ? "(H) " : "", me.info);
776 }
777
778 sendto_one(client_p, "SVINFO %d %d 0 :%lu", TS_CURRENT, TS_MIN,
779 (unsigned long)CurrentTime);
780
781 /* assumption here is if they passed the correct TS version, they also passed an SID */
782 if (IsCapable(client_p, CAP_TS6))
783 hash_add_id(client_p);
784
785 /* XXX Does this ever happen? I don't think so -db */
786 detach_conf(client_p, OPER_TYPE);
787
788 /* *WARNING*
789 ** In the following code in place of plain server's
790 ** name we send what is returned by get_client_name
791 ** which may add the "sockhost" after the name. It's
792 ** *very* *important* that there is a SPACE between
793 ** the name and sockhost (if present). The receiving
794 ** server will start the information field from this
795 ** first blank and thus puts the sockhost into info.
796 ** ...a bit tricky, but you have been warned, besides
797 ** code is more neat this way... --msa
798 */
799 client_p->servptr = &me;
800
801 if (IsClosing(client_p))
802 return;
803
804 SetServer(client_p);
805
806 /* Update the capability combination usage counts. -A1kmm */
807 set_chcap_usage_counts(client_p);
808
809 /* Some day, all these lists will be consolidated *sigh* */
810 dlinkAdd(client_p, &client_p->lnode, &me.serv->server_list);
811
812 assert(dlinkFind(&unknown_list, client_p));
813
814 dlink_move_node(&client_p->localClient->lclient_node,
815 &unknown_list, &serv_list);
816
817 Count.myserver++;
818
819 dlinkAdd(client_p, make_dlink_node(), &global_serv_list);
820 hash_add_client(client_p);
821
822 /* doesnt duplicate client_p->serv if allocated this struct already */
823 make_server(client_p);
824
825 /* fixing eob timings.. -gnp */
826 client_p->localClient->firsttime = CurrentTime;
827
828 if (find_matching_name_conf(SERVICE_TYPE, client_p->name, NULL, NULL, 0))
829 AddFlag(client_p, FLAGS_SERVICE);
830
831 /* Show the real host/IP to admins */
832 #ifdef HAVE_LIBCRYPTO
833 if (client_p->localClient->fd.ssl)
834 {
835 compression = SSL_get_current_compression(client_p->localClient->fd.ssl);
836 expansion = SSL_get_current_expansion(client_p->localClient->fd.ssl);
837
838 sendto_realops_flags(UMODE_ALL, L_ADMIN,
839 "Link with %s established: [SSL: %s, Compression/Expansion method: %s/%s] (Capabilities: %s)",
840 inpath_ip, ssl_get_cipher(client_p->localClient->fd.ssl),
841 compression ? SSL_COMP_get_name(compression) : "NONE",
842 expansion ? SSL_COMP_get_name(expansion) : "NONE",
843 show_capabilities(client_p));
844 /* Now show the masked hostname/IP to opers */
845 sendto_realops_flags(UMODE_ALL, L_OPER,
846 "Link with %s established: [SSL: %s, Compression/Expansion method: %s/%s] (Capabilities: %s)",
847 inpath, ssl_get_cipher(client_p->localClient->fd.ssl),
848 compression ? SSL_COMP_get_name(compression) : "NONE",
849 expansion ? SSL_COMP_get_name(expansion) : "NONE",
850 show_capabilities(client_p));
851 ilog(LOG_TYPE_IRCD, "Link with %s established: [SSL: %s, Compression/Expansion method: %s/%s] (Capabilities: %s)",
852 inpath_ip, ssl_get_cipher(client_p->localClient->fd.ssl),
853 compression ? SSL_COMP_get_name(compression) : "NONE",
854 expansion ? SSL_COMP_get_name(expansion) : "NONE",
855 show_capabilities(client_p));
856 }
857 else
858 #endif
859 {
860 sendto_realops_flags(UMODE_ALL, L_ADMIN,
861 "Link with %s established: (Capabilities: %s)",
862 inpath_ip,show_capabilities(client_p));
863 /* Now show the masked hostname/IP to opers */
864 sendto_realops_flags(UMODE_ALL, L_OPER,
865 "Link with %s established: (Capabilities: %s)",
866 inpath,show_capabilities(client_p));
867 ilog(LOG_TYPE_IRCD, "Link with %s established: (Capabilities: %s)",
868 inpath_ip, show_capabilities(client_p));
869 }
870
871 fd_note(&client_p->localClient->fd, "Server: %s", client_p->name);
872
873 /* Old sendto_serv_but_one() call removed because we now
874 ** need to send different names to different servers
875 ** (domain name matching) Send new server to other servers.
876 */
877 DLINK_FOREACH(ptr, serv_list.head)
878 {
879 target_p = ptr->data;
880
881 if (target_p == client_p)
882 continue;
883
884 if (IsCapable(target_p, CAP_TS6) && HasID(client_p))
885 sendto_one(target_p, ":%s SID %s 2 %s :%s%s",
886 me.id, client_p->name, client_p->id,
887 IsHidden(client_p) ? "(H) " : "",
888 client_p->info);
889 else
890 sendto_one(target_p,":%s SERVER %s 2 :%s%s",
891 me.name, client_p->name,
892 IsHidden(client_p) ? "(H) " : "",
893 client_p->info);
894 }
895
896 /* Pass on my client information to the new server
897 **
898 ** First, pass only servers (idea is that if the link gets
899 ** cancelled beacause the server was already there,
900 ** there are no NICK's to be cancelled...). Of course,
901 ** if cancellation occurs, all this info is sent anyway,
902 ** and I guess the link dies when a read is attempted...? --msa
903 **
904 ** Note: Link cancellation to occur at this point means
905 ** that at least two servers from my fragment are building
906 ** up connection this other fragment at the same time, it's
907 ** a race condition, not the normal way of operation...
908 **
909 ** ALSO NOTE: using the get_client_name for server names--
910 ** see previous *WARNING*!!! (Also, original inpath
911 ** is destroyed...)
912 */
913
914 DLINK_FOREACH_PREV(ptr, global_serv_list.tail)
915 {
916 target_p = ptr->data;
917
918 /* target_p->from == target_p for target_p == client_p */
919 if (IsMe(target_p) || target_p->from == client_p)
920 continue;
921
922 if (IsCapable(client_p, CAP_TS6))
923 {
924 if (HasID(target_p))
925 sendto_one(client_p, ":%s SID %s %d %s :%s%s",
926 ID(target_p->servptr), target_p->name, target_p->hopcount+1,
927 target_p->id, IsHidden(target_p) ? "(H) " : "",
928 target_p->info);
929 else /* introducing non-ts6 server */
930 sendto_one(client_p, ":%s SERVER %s %d :%s%s",
931 ID(target_p->servptr), target_p->name, target_p->hopcount+1,
932 IsHidden(target_p) ? "(H) " : "", target_p->info);
933 }
934 else
935 sendto_one(client_p, ":%s SERVER %s %d :%s%s",
936 target_p->servptr->name, target_p->name, target_p->hopcount+1,
937 IsHidden(target_p) ? "(H) " : "", target_p->info);
938 }
939
940 server_burst(client_p);
941 }
942
943 /* server_burst()
944 *
945 * inputs - struct Client pointer server
946 * -
947 * output - none
948 * side effects - send a server burst
949 * bugs - still too long
950 */
951 static void
952 server_burst(struct Client *client_p)
953 {
954 /* Send it in the shortened format with the TS, if
955 ** it's a TS server; walk the list of channels, sending
956 ** all the nicks that haven't been sent yet for each
957 ** channel, then send the channel itself -- it's less
958 ** obvious than sending all nicks first, but on the
959 ** receiving side memory will be allocated more nicely
960 ** saving a few seconds in the handling of a split
961 ** -orabidoo
962 */
963
964 burst_all(client_p);
965
966 /* EOB stuff is now in burst_all */
967 /* Always send a PING after connect burst is done */
968 sendto_one(client_p, "PING :%s", ID_or_name(&me, client_p));
969 }
970
971 /* burst_all()
972 *
973 * inputs - pointer to server to send burst to
974 * output - NONE
975 * side effects - complete burst of channels/nicks is sent to client_p
976 */
977 static void
978 burst_all(struct Client *client_p)
979 {
980 dlink_node *ptr = NULL;
981
982 DLINK_FOREACH(ptr, global_channel_list.head)
983 {
984 struct Channel *chptr = ptr->data;
985
986 if (dlink_list_length(&chptr->members) != 0)
987 {
988 burst_members(client_p, chptr);
989 send_channel_modes(client_p, chptr);
990
991 if (IsCapable(client_p, CAP_TBURST))
992 send_tb(client_p, chptr);
993 }
994 }
995
996 /* also send out those that are not on any channel
997 */
998 DLINK_FOREACH(ptr, global_client_list.head)
999 {
1000 struct Client *target_p = ptr->data;
1001
1002 if (!HasFlag(target_p, FLAGS_BURSTED) && target_p->from != client_p)
1003 sendnick_TS(client_p, target_p);
1004
1005 DelFlag(target_p, FLAGS_BURSTED);
1006 }
1007
1008 /* We send the time we started the burst, and let the remote host determine an EOB time,
1009 ** as otherwise we end up sending a EOB of 0 Sending here means it gets sent last -- fl
1010 */
1011 /* Its simpler to just send EOB and use the time its been connected.. --fl_ */
1012 if (IsCapable(client_p, CAP_EOB))
1013 sendto_one(client_p, ":%s EOB", ID_or_name(&me, client_p));
1014 }
1015
1016 /*
1017 * send_tb
1018 *
1019 * inputs - pointer to Client
1020 * - pointer to channel
1021 * output - NONE
1022 * side effects - Called on a server burst when
1023 * server is CAP_TBURST capable
1024 */
1025 static void
1026 send_tb(struct Client *client_p, struct Channel *chptr)
1027 {
1028 /*
1029 * We may also send an empty topic here, but only if topic_time isn't 0,
1030 * i.e. if we had a topic that got unset. This is required for syncing
1031 * topics properly.
1032 *
1033 * Imagine the following scenario: Our downlink introduces a channel
1034 * to us with a TS that is equal to ours, but the channel topic on
1035 * their side got unset while the servers were in splitmode, which means
1036 * their 'topic' is newer. They simply wanted to unset it, so we have to
1037 * deal with it in a more sophisticated fashion instead of just resetting
1038 * it to their old topic they had before. Read m_tburst.c:ms_tburst
1039 * for further information -Michael
1040 */
1041 if (chptr->topic_time != 0)
1042 sendto_one(client_p, ":%s TBURST %lu %s %lu %s :%s",
1043 ID_or_name(&me, client_p),
1044 (unsigned long)chptr->channelts, chptr->chname,
1045 (unsigned long)chptr->topic_time,
1046 chptr->topic_info,
1047 chptr->topic);
1048 }
1049
1050 /* burst_members()
1051 *
1052 * inputs - pointer to server to send members to
1053 * - dlink_list pointer to membership list to send
1054 * output - NONE
1055 * side effects -
1056 */
1057 static void
1058 burst_members(struct Client *client_p, struct Channel *chptr)
1059 {
1060 struct Client *target_p;
1061 struct Membership *ms;
1062 dlink_node *ptr;
1063
1064 DLINK_FOREACH(ptr, chptr->members.head)
1065 {
1066 ms = ptr->data;
1067 target_p = ms->client_p;
1068
1069 if (!HasFlag(target_p, FLAGS_BURSTED))
1070 {
1071 AddFlag(target_p, FLAGS_BURSTED);
1072
1073 if (target_p->from != client_p)
1074 sendnick_TS(client_p, target_p);
1075 }
1076 }
1077 }
1078
1079 /* New server connection code
1080 * Based upon the stuff floating about in s_bsd.c
1081 * -- adrian
1082 */
1083
1084 /* serv_connect() - initiate a server connection
1085 *
1086 * inputs - pointer to conf
1087 * - pointer to client doing the connect
1088 * output -
1089 * side effects -
1090 *
1091 * This code initiates a connection to a server. It first checks to make
1092 * sure the given server exists. If this is the case, it creates a socket,
1093 * creates a client, saves the socket information in the client, and
1094 * initiates a connection to the server through comm_connect_tcp(). The
1095 * completion of this goes through serv_completed_connection().
1096 *
1097 * We return 1 if the connection is attempted, since we don't know whether
1098 * it suceeded or not, and 0 if it fails in here somewhere.
1099 */
1100 int
1101 serv_connect(struct AccessItem *aconf, struct Client *by)
1102 {
1103 struct ConfItem *conf;
1104 struct Client *client_p;
1105 char buf[HOSTIPLEN + 1];
1106
1107 /* conversion structs */
1108 struct sockaddr_in *v4;
1109 /* Make sure aconf is useful */
1110 assert(aconf != NULL);
1111
1112 /* XXX should be passing struct ConfItem in the first place */
1113 conf = unmap_conf_item(aconf);
1114
1115 /* log */
1116 getnameinfo((struct sockaddr *)&aconf->addr, aconf->addr.ss_len,
1117 buf, sizeof(buf), NULL, 0, NI_NUMERICHOST);
1118 ilog(LOG_TYPE_IRCD, "Connect to %s[%s] @%s", conf->name, aconf->host,
1119 buf);
1120
1121 /* Still processing a DNS lookup? -> exit */
1122 if (aconf->dns_pending)
1123 {
1124 sendto_realops_flags(UMODE_ALL, L_ALL,
1125 "Error connecting to %s: DNS lookup for connect{} in progress.",
1126 conf->name);
1127 return (0);
1128 }
1129
1130 if (aconf->dns_failed)
1131 {
1132 sendto_realops_flags(UMODE_ALL, L_ALL,
1133 "Error connecting to %s: DNS lookup for connect{} failed.",
1134 conf->name);
1135 return (0);
1136 }
1137
1138 /* Make sure this server isn't already connected
1139 * Note: aconf should ALWAYS be a valid C: line
1140 */
1141 if ((client_p = hash_find_server(conf->name)) != NULL)
1142 {
1143 sendto_realops_flags(UMODE_ALL, L_ADMIN,
1144 "Server %s already present from %s",
1145 conf->name, get_client_name(client_p, SHOW_IP));
1146 sendto_realops_flags(UMODE_ALL, L_OPER,
1147 "Server %s already present from %s",
1148 conf->name, get_client_name(client_p, MASK_IP));
1149 if (by && IsClient(by) && !MyClient(by))
1150 sendto_one(by, ":%s NOTICE %s :Server %s already present from %s",
1151 me.name, by->name, conf->name,
1152 get_client_name(client_p, MASK_IP));
1153 return (0);
1154 }
1155
1156 /* Create a local client */
1157 client_p = make_client(NULL);
1158
1159 /* Copy in the server, hostname, fd */
1160 strlcpy(client_p->name, conf->name, sizeof(client_p->name));
1161 strlcpy(client_p->host, aconf->host, sizeof(client_p->host));
1162
1163 /* We already converted the ip once, so lets use it - stu */
1164 strlcpy(client_p->sockhost, buf, sizeof(client_p->sockhost));
1165
1166 /* create a socket for the server connection */
1167 if (comm_open(&client_p->localClient->fd, aconf->addr.ss.ss_family,
1168 SOCK_STREAM, 0, NULL) < 0)
1169 {
1170 /* Eek, failure to create the socket */
1171 report_error(L_ALL,
1172 "opening stream socket to %s: %s", conf->name, errno);
1173 SetDead(client_p);
1174 exit_client(client_p, &me, "Connection failed");
1175 return (0);
1176 }
1177
1178 /* servernames are always guaranteed under HOSTLEN chars */
1179 fd_note(&client_p->localClient->fd, "Server: %s", conf->name);
1180
1181 /* Attach config entries to client here rather than in
1182 * serv_connect_callback(). This to avoid null pointer references.
1183 */
1184 if (!attach_connect_block(client_p, conf->name, aconf->host))
1185 {
1186 sendto_realops_flags(UMODE_ALL, L_ALL,
1187 "Host %s is not enabled for connecting:no C/N-line",
1188 conf->name);
1189 if (by && IsClient(by) && !MyClient(by))
1190 sendto_one(by, ":%s NOTICE %s :Connect to host %s failed.",
1191 me.name, by->name, client_p->name);
1192 SetDead(client_p);
1193 exit_client(client_p, client_p, "Connection failed");
1194 return (0);
1195 }
1196
1197 /* at this point we have a connection in progress and C/N lines
1198 * attached to the client, the socket info should be saved in the
1199 * client and it should either be resolved or have a valid address.
1200 *
1201 * The socket has been connected or connect is in progress.
1202 */
1203 make_server(client_p);
1204
1205 if (by && IsClient(by))
1206 strlcpy(client_p->serv->by, by->name, sizeof(client_p->serv->by));
1207 else
1208 strlcpy(client_p->serv->by, "AutoConn.", sizeof(client_p->serv->by));
1209
1210 SetConnecting(client_p);
1211 dlinkAdd(client_p, &client_p->node, &global_client_list);
1212 /* from def_fam */
1213 client_p->localClient->aftype = aconf->aftype;
1214
1215 /* Now, initiate the connection */
1216 /* XXX assume that a non 0 type means a specific bind address
1217 * for this connect.
1218 */
1219 switch (aconf->aftype)
1220 {
1221 case AF_INET:
1222 v4 = (struct sockaddr_in*)&aconf->bind;
1223 if (v4->sin_addr.s_addr != 0)
1224 {
1225 struct irc_ssaddr ipn;
1226 memset(&ipn, 0, sizeof(struct irc_ssaddr));
1227 ipn.ss.ss_family = AF_INET;
1228 ipn.ss_port = 0;
1229 memcpy(&ipn, &aconf->bind, sizeof(struct irc_ssaddr));
1230 comm_connect_tcp(&client_p->localClient->fd, aconf->host, aconf->port,
1231 (struct sockaddr *)&ipn, ipn.ss_len,
1232 serv_connect_callback, client_p, aconf->aftype,
1233 CONNECTTIMEOUT);
1234 }
1235 else if (ServerInfo.specific_ipv4_vhost)
1236 {
1237 struct irc_ssaddr ipn;
1238 memset(&ipn, 0, sizeof(struct irc_ssaddr));
1239 ipn.ss.ss_family = AF_INET;
1240 ipn.ss_port = 0;
1241 memcpy(&ipn, &ServerInfo.ip, sizeof(struct irc_ssaddr));
1242 comm_connect_tcp(&client_p->localClient->fd, aconf->host, aconf->port,
1243 (struct sockaddr *)&ipn, ipn.ss_len,
1244 serv_connect_callback, client_p, aconf->aftype,
1245 CONNECTTIMEOUT);
1246 }
1247 else
1248 comm_connect_tcp(&client_p->localClient->fd, aconf->host, aconf->port,
1249 NULL, 0, serv_connect_callback, client_p, aconf->aftype,
1250 CONNECTTIMEOUT);
1251 break;
1252 #ifdef IPV6
1253 case AF_INET6:
1254 {
1255 struct irc_ssaddr ipn;
1256 struct sockaddr_in6 *v6;
1257 struct sockaddr_in6 *v6conf;
1258
1259 memset(&ipn, 0, sizeof(struct irc_ssaddr));
1260 v6conf = (struct sockaddr_in6 *)&aconf->bind;
1261 v6 = (struct sockaddr_in6 *)&ipn;
1262
1263 if (memcmp(&v6conf->sin6_addr, &v6->sin6_addr,
1264 sizeof(struct in6_addr)) != 0)
1265 {
1266 memcpy(&ipn, &aconf->bind, sizeof(struct irc_ssaddr));
1267 ipn.ss.ss_family = AF_INET6;
1268 ipn.ss_port = 0;
1269 comm_connect_tcp(&client_p->localClient->fd,
1270 aconf->host, aconf->port,
1271 (struct sockaddr *)&ipn, ipn.ss_len,
1272 serv_connect_callback, client_p,
1273 aconf->aftype, CONNECTTIMEOUT);
1274 }
1275 else if (ServerInfo.specific_ipv6_vhost)
1276 {
1277 memcpy(&ipn, &ServerInfo.ip6, sizeof(struct irc_ssaddr));
1278 ipn.ss.ss_family = AF_INET6;
1279 ipn.ss_port = 0;
1280 comm_connect_tcp(&client_p->localClient->fd,
1281 aconf->host, aconf->port,
1282 (struct sockaddr *)&ipn, ipn.ss_len,
1283 serv_connect_callback, client_p,
1284 aconf->aftype, CONNECTTIMEOUT);
1285 }
1286 else
1287 comm_connect_tcp(&client_p->localClient->fd,
1288 aconf->host, aconf->port,
1289 NULL, 0, serv_connect_callback, client_p,
1290 aconf->aftype, CONNECTTIMEOUT);
1291 }
1292 #endif
1293 }
1294 return (1);
1295 }
1296
1297 #ifdef HAVE_LIBCRYPTO
1298 static void
1299 finish_ssl_server_handshake(struct Client *client_p)
1300 {
1301 struct ConfItem *conf=NULL;
1302 struct AccessItem *aconf=NULL;
1303
1304 conf = find_conf_name(&client_p->localClient->confs,
1305 client_p->name, SERVER_TYPE);
1306 if (conf == NULL)
1307 {
1308 sendto_realops_flags(UMODE_ALL, L_ADMIN,
1309 "Lost connect{} block for %s", get_client_name(client_p, HIDE_IP));
1310 sendto_realops_flags(UMODE_ALL, L_OPER,
1311 "Lost connect{} block for %s", get_client_name(client_p, MASK_IP));
1312
1313 exit_client(client_p, &me, "Lost connect{} block");
1314 return;
1315 }
1316
1317 aconf = map_to_conf(conf);
1318
1319 /* jdc -- Check and send spasswd, not passwd. */
1320 if (!EmptyString(aconf->spasswd))
1321 sendto_one(client_p, "PASS %s TS %d %s",
1322 aconf->spasswd, TS_CURRENT, me.id);
1323
1324 send_capabilities(client_p, aconf,
1325 (IsConfTopicBurst(aconf) ? CAP_TBURST : 0));
1326
1327 sendto_one(client_p, "SERVER %s 1 :%s%s",
1328 me.name, ConfigServerHide.hidden ? "(H) " : "",
1329 me.info);
1330
1331 /* If we've been marked dead because a send failed, just exit
1332 * here now and save everyone the trouble of us ever existing.
1333 */
1334 if (IsDead(client_p))
1335 {
1336 sendto_realops_flags(UMODE_ALL, L_ADMIN,
1337 "%s[%s] went dead during handshake",
1338 client_p->name,
1339 client_p->host);
1340 sendto_realops_flags(UMODE_ALL, L_OPER,
1341 "%s went dead during handshake", client_p->name);
1342 return;
1343 }
1344
1345 /* don't move to serv_list yet -- we haven't sent a burst! */
1346 /* If we get here, we're ok, so lets start reading some data */
1347 comm_setselect(&client_p->localClient->fd, COMM_SELECT_READ, read_packet, client_p, 0);
1348 }
1349
1350 static void
1351 ssl_server_handshake(fde_t *fd, struct Client *client_p)
1352 {
1353 int ret;
1354 int err;
1355
1356 ret = SSL_connect(client_p->localClient->fd.ssl);
1357
1358 if (ret <= 0)
1359 {
1360 switch ((err = SSL_get_error(client_p->localClient->fd.ssl, ret)))
1361 {
1362 case SSL_ERROR_WANT_WRITE:
1363 comm_setselect(&client_p->localClient->fd, COMM_SELECT_WRITE,
1364 (PF *)ssl_server_handshake, client_p, 0);
1365 return;
1366 case SSL_ERROR_WANT_READ:
1367 comm_setselect(&client_p->localClient->fd, COMM_SELECT_READ,
1368 (PF *)ssl_server_handshake, client_p, 0);
1369 return;
1370 default:
1371 {
1372 const char *sslerr = ERR_error_string(ERR_get_error(), NULL);
1373 sendto_realops_flags(UMODE_ALL, L_ALL,
1374 "Error connecting to %s: %s", client_p->name,
1375 sslerr ? sslerr : "unknown SSL error");
1376 exit_client(client_p, client_p, "Error during SSL handshake");
1377 return;
1378 }
1379 }
1380 }
1381
1382 finish_ssl_server_handshake(client_p);
1383 }
1384
1385 static void
1386 ssl_connect_init(struct Client *client_p, struct AccessItem *aconf, fde_t *fd)
1387 {
1388 if ((client_p->localClient->fd.ssl = SSL_new(ServerInfo.client_ctx)) == NULL)
1389 {
1390 ilog(LOG_TYPE_IRCD, "SSL_new() ERROR! -- %s",
1391 ERR_error_string(ERR_get_error(), NULL));
1392 SetDead(client_p);
1393 exit_client(client_p, client_p, "SSL_new failed");
1394 return;
1395 }
1396
1397 SSL_set_fd(fd->ssl, fd->fd);
1398
1399 if (!EmptyString(aconf->cipher_list))
1400 SSL_set_cipher_list(client_p->localClient->fd.ssl, aconf->cipher_list);
1401
1402 ssl_server_handshake(NULL, client_p);
1403 }
1404 #endif
1405
1406 /* serv_connect_callback() - complete a server connection.
1407 *
1408 * This routine is called after the server connection attempt has
1409 * completed. If unsucessful, an error is sent to ops and the client
1410 * is closed. If sucessful, it goes through the initialisation/check
1411 * procedures, the capabilities are sent, and the socket is then
1412 * marked for reading.
1413 */
1414 static void
1415 serv_connect_callback(fde_t *fd, int status, void *data)
1416 {
1417 struct Client *client_p = data;
1418 struct ConfItem *conf=NULL;
1419 struct AccessItem *aconf=NULL;
1420
1421 /* First, make sure its a real client! */
1422 assert(client_p != NULL);
1423 assert(&client_p->localClient->fd == fd);
1424
1425 /* Next, for backward purposes, record the ip of the server */
1426 memcpy(&client_p->localClient->ip, &fd->connect.hostaddr,
1427 sizeof(struct irc_ssaddr));
1428 /* Check the status */
1429 if (status != COMM_OK)
1430 {
1431 /* We have an error, so report it and quit
1432 * Admins get to see any IP, mere opers don't *sigh*
1433 */
1434 if (ConfigServerHide.hide_server_ips)
1435 sendto_realops_flags(UMODE_ALL, L_ADMIN,
1436 "Error connecting to %s: %s",
1437 client_p->name, comm_errstr(status));
1438 else
1439 sendto_realops_flags(UMODE_ALL, L_ADMIN,
1440 "Error connecting to %s[%s]: %s", client_p->name,
1441 client_p->host, comm_errstr(status));
1442
1443 sendto_realops_flags(UMODE_ALL, L_OPER,
1444 "Error connecting to %s: %s",
1445 client_p->name, comm_errstr(status));
1446
1447 /* If a fd goes bad, call dead_link() the socket is no
1448 * longer valid for reading or writing.
1449 */
1450 dead_link_on_write(client_p, 0);
1451 return;
1452 }
1453
1454 /* COMM_OK, so continue the connection procedure */
1455 /* Get the C/N lines */
1456 conf = find_conf_name(&client_p->localClient->confs,
1457 client_p->name, SERVER_TYPE);
1458 if (conf == NULL)
1459 {
1460 sendto_realops_flags(UMODE_ALL, L_ADMIN,
1461 "Lost connect{} block for %s", get_client_name(client_p, HIDE_IP));
1462 sendto_realops_flags(UMODE_ALL, L_OPER,
1463 "Lost connect{} block for %s", get_client_name(client_p, MASK_IP));
1464
1465 exit_client(client_p, &me, "Lost connect{} block");
1466 return;
1467 }
1468
1469 aconf = map_to_conf(conf);
1470 /* Next, send the initial handshake */
1471 SetHandshake(client_p);
1472
1473 #ifdef HAVE_LIBCRYPTO
1474 if (IsConfSSL(aconf))
1475 {
1476 ssl_connect_init(client_p, aconf, fd);
1477 return;
1478 }
1479 #endif
1480
1481 /* jdc -- Check and send spasswd, not passwd. */
1482 if (!EmptyString(aconf->spasswd))
1483 sendto_one(client_p, "PASS %s TS %d %s",
1484 aconf->spasswd, TS_CURRENT, me.id);
1485
1486 send_capabilities(client_p, aconf,
1487 (IsConfTopicBurst(aconf) ? CAP_TBURST : 0));
1488
1489 sendto_one(client_p, "SERVER %s 1 :%s%s",
1490 me.name, ConfigServerHide.hidden ? "(H) " : "",
1491 me.info);
1492
1493 /* If we've been marked dead because a send failed, just exit
1494 * here now and save everyone the trouble of us ever existing.
1495 */
1496 if (IsDead(client_p))
1497 {
1498 sendto_realops_flags(UMODE_ALL, L_ADMIN,
1499 "%s[%s] went dead during handshake",
1500 client_p->name,
1501 client_p->host);
1502 sendto_realops_flags(UMODE_ALL, L_OPER,
1503 "%s went dead during handshake", client_p->name);
1504 return;
1505 }
1506
1507 /* don't move to serv_list yet -- we haven't sent a burst! */
1508 /* If we get here, we're ok, so lets start reading some data */
1509 comm_setselect(fd, COMM_SELECT_READ, read_packet, client_p, 0);
1510 }
1511
1512 struct Client *
1513 find_servconn_in_progress(const char *name)
1514 {
1515 dlink_node *ptr;
1516 struct Client *cptr;
1517
1518 DLINK_FOREACH(ptr, unknown_list.head)
1519 {
1520 cptr = ptr->data;
1521
1522 if (cptr && cptr->name[0])
1523 if (match(name, cptr->name))
1524 return cptr;
1525 }
1526
1527 return NULL;
1528 }

Properties

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

svnadmin@ircd-hybrid.org
ViewVC Help
Powered by ViewVC 1.1.28