2 * ircd-ratbox: A slightly useful ircd.
3 * s_serv.c: Server related functions.
5 * Copyright (C) 1990 Jarkko Oikarinen and University of Oulu, Co Center
6 * Copyright (C) 1996-2002 Hybrid Development Team
7 * Copyright (C) 2002-2005 ircd-ratbox development team
9 * This program is free software; you can redistribute it and/or modify
10 * it under the terms of the GNU General Public License as published by
11 * the Free Software Foundation; either version 2 of the License, or
12 * (at your option) any later version.
14 * This program is distributed in the hope that it will be useful,
15 * but WITHOUT ANY WARRANTY; without even the implied warranty of
16 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
17 * GNU General Public License for more details.
19 * You should have received a copy of the GNU General Public License
20 * along with this program; if not, write to the Free Software
21 * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307
24 * $Id: s_serv.c 3550 2007-08-09 06:47:26Z nenolod $
30 #include <openssl/rsa.h>
40 #include "ircd_defs.h"
45 #include "s_newconf.h"
52 #include "channel.h" /* chcap_usage_counts stuff... */
59 #define INADDR_NONE ((unsigned int) 0xffffffff)
62 int MaxConnectionCount
= 1;
63 int MaxClientCount
= 1;
64 int refresh_user_links
= 0;
66 static char buf
[BUFSIZE
];
69 * list of recognized server capabilities. "TS" is not on the list
70 * because all servers that we talk to already do TS, and the kludged
71 * extra argument to "PASS" takes care of checking that. -orabidoo
73 struct Capability captab
[] = {
80 { "KNOCK", CAP_KNOCK
},
83 { "UNKLN", CAP_UNKLN
},
84 { "CLUSTER", CAP_CLUSTER
},
85 { "ENCAP", CAP_ENCAP
},
86 { "SERVICES", CAP_SERVICE
},
87 { "RSFNC", CAP_RSFNC
},
90 { "EOPMOD", CAP_EOPMOD
},
94 static CNCB serv_connect_callback
;
95 static CNCB serv_connect_ssl_callback
;
98 * hunt_server - Do the basic thing in delivering the message (command)
99 * across the relays to the specific server (server) for
102 * Note: The command is a format string and *MUST* be
103 * of prefixed style (e.g. ":%s COMMAND %s ...").
104 * Command can have only max 8 parameters.
106 * server parv[server] is the parameter identifying the
110 * parv[server] is replaced with the pointer to the
111 * real servername from the matched client (I'm lazy
114 * returns: (see #defines)
117 hunt_server(struct Client
*client_p
, struct Client
*source_p
,
118 const char *command
, int server
, int parc
, const char *parv
[])
120 struct Client
*target_p
;
127 * Assume it's me, if no server
129 if(parc
<= server
|| EmptyString(parv
[server
]) ||
130 match(parv
[server
], me
.name
) || (strcmp(parv
[server
], me
.id
) == 0))
131 return (HUNTED_ISME
);
133 new = LOCAL_COPY(parv
[server
]);
136 * These are to pickup matches that would cause the following
137 * message to go in the wrong direction while doing quick fast
138 * non-matching lookups.
140 if(MyClient(source_p
))
141 target_p
= find_named_client(new);
143 target_p
= find_client(new);
146 if(target_p
->from
== source_p
->from
&& !MyConnect(target_p
))
150 wilds
= (strchr(new, '?') || strchr(new, '*'));
153 * Again, if there are no wild cards involved in the server
154 * name, use the hash lookup
156 if(!target_p
&& wilds
)
158 RB_DLINK_FOREACH(ptr
, global_client_list
.head
)
160 if(match(new, ((struct Client
*) (ptr
->data
))->name
))
162 target_p
= ptr
->data
;
168 if(target_p
&& !IsRegistered(target_p
))
173 if(IsMe(target_p
) || MyClient(target_p
))
177 parv
[server
] = get_id(target_p
, target_p
);
179 sendto_one(target_p
, command
, get_id(source_p
, target_p
),
180 parv
[1], parv
[2], parv
[3], parv
[4], parv
[5], parv
[6], parv
[7], parv
[8]);
182 return (HUNTED_PASS
);
185 if(MyClient(source_p
) || !IsDigit(parv
[server
][0]))
186 sendto_one_numeric(source_p
, ERR_NOSUCHSERVER
,
187 form_str(ERR_NOSUCHSERVER
), parv
[server
]);
188 return (HUNTED_NOSUCH
);
192 * try_connections - scan through configuration and try new connections.
193 * Returns the calendar time when the next call to this
194 * function should be made latest. (No harm done if this
195 * is called earlier or later...)
198 try_connections(void *unused
)
200 struct Client
*client_p
;
201 struct server_conf
*server_p
= NULL
;
202 struct server_conf
*tmp_p
;
205 int connecting
= FALSE
;
209 RB_DLINK_FOREACH(ptr
, server_conf_list
.head
)
213 if(ServerConfIllegal(tmp_p
) || !ServerConfAutoconn(tmp_p
))
216 /* don't allow ssl connections if ssl isn't setup */
217 if(ServerConfSSL(tmp_p
) && (!ssl_ok
|| !get_ssld_count()))
220 cltmp
= tmp_p
->class;
223 * Skip this entry if the use of it is still on hold until
224 * future. Otherwise handle this entry (and set it on hold
225 * until next time). Will reset only hold times, if already
226 * made one successfull connection... [this algorithm is
227 * a bit fuzzy... -- msa >;) ]
229 if(tmp_p
->hold
> rb_current_time())
231 if(next
> tmp_p
->hold
|| next
== 0)
236 confrq
= get_con_freq(cltmp
);
237 tmp_p
->hold
= rb_current_time() + confrq
;
240 * Found a CONNECT config with port specified, scan clients
241 * and see if this server is already connected?
243 client_p
= find_server(NULL
, tmp_p
->name
);
245 if(!client_p
&& (CurrUsers(cltmp
) < MaxUsers(cltmp
)) && !connecting
)
249 /* We connect only one at time... */
253 if((next
> tmp_p
->hold
) || (next
== 0))
257 /* TODO: change this to set active flag to 0 when added to event! --Habeeb */
258 if(GlobalSetOptions
.autoconn
== 0)
264 /* move this connect entry to end.. */
265 rb_dlinkDelete(&server_p
->node
, &server_conf_list
);
266 rb_dlinkAddTail(server_p
, &server_p
->node
, &server_conf_list
);
269 * We used to only print this if serv_connect() actually
270 * suceeded, but since rb_tcp_connect() can call the callback
271 * immediately if there is an error, we were getting error messages
272 * in the wrong order. SO, we just print out the activated line,
273 * and let serv_connect() / serv_connect_callback() print an
274 * error afterwards if it fails.
277 sendto_realops_snomask(SNO_GENERAL
, L_ALL
,
278 "Connection to %s activated",
281 serv_connect(server_p
, 0);
285 check_server(const char *name
, struct Client
*client_p
)
287 struct server_conf
*server_p
= NULL
;
288 struct server_conf
*tmp_p
;
292 s_assert(NULL
!= client_p
);
296 if(!(client_p
->localClient
->passwd
))
299 if(strlen(name
) > HOSTLEN
)
302 RB_DLINK_FOREACH(ptr
, server_conf_list
.head
)
306 if(ServerConfIllegal(tmp_p
))
309 if(!match(tmp_p
->name
, name
))
314 /* XXX: Fix me for IPv6 */
315 /* XXX sockhost is the IPv4 ip as a string */
316 if(match(tmp_p
->host
, client_p
->host
) ||
317 match(tmp_p
->host
, client_p
->sockhost
))
321 if(ServerConfEncrypted(tmp_p
))
323 if(!strcmp(tmp_p
->passwd
, rb_crypt(client_p
->localClient
->passwd
,
330 else if(!strcmp(tmp_p
->passwd
, client_p
->localClient
->passwd
))
341 if(ServerConfSSL(server_p
) && client_p
->localClient
->ssl_ctl
== NULL
)
346 attach_server_conf(client_p
, server_p
);
348 /* clear ZIP/TB if they support but we dont want them */
350 if(!ServerConfCompressed(server_p
))
352 ClearCap(client_p
, CAP_ZIP
);
354 if(!ServerConfTb(server_p
))
355 ClearCap(client_p
, CAP_TB
);
363 * inputs - Client pointer to send to
364 * - int flag of capabilities that this server has
366 * side effects - send the CAPAB line to a server -orabidoo
370 send_capabilities(struct Client
*client_p
, int cap_can_send
)
372 struct Capability
*cap
;
373 char msgbuf
[BUFSIZE
];
379 for (cap
= captab
; cap
->name
; ++cap
)
381 if(cap
->cap
& cap_can_send
)
383 tl
= rb_sprintf(t
, "%s ", cap
->name
);
391 sendto_one(client_p
, "CAPAB :%s", msgbuf
);
396 * input - client to burst to, channel name, list to burst, mode flag
398 * side effects - client is sent a list of +b, +e, or +I modes
401 burst_modes_TS6(struct Client
*client_p
, struct Channel
*chptr
,
402 rb_dlink_list
*list
, char flag
)
411 cur_len
= mlen
= rb_sprintf(buf
, ":%s BMASK %ld %s %c :",
412 me
.id
, (long) chptr
->channelts
, chptr
->chname
, flag
);
415 RB_DLINK_FOREACH(ptr
, list
->head
)
419 tlen
= strlen(banptr
->banstr
) + 1;
422 if(cur_len
+ tlen
> BUFSIZE
- 3)
424 /* the one we're trying to send doesnt fit at all! */
431 /* chop off trailing space and send.. */
433 sendto_one(client_p
, "%s", buf
);
438 rb_sprintf(t
, "%s ", banptr
->banstr
);
443 /* cant ever exit the loop above without having modified buf,
444 * chop off trailing space and send.
447 sendto_one(client_p
, "%s", buf
);
453 * inputs - client (server) to send nick towards
454 * - client to send nick for
456 * side effects - NICK message is sent towards given client_p
459 burst_TS6(struct Client
*client_p
)
461 static char ubuf
[12];
462 struct Client
*target_p
;
463 struct Channel
*chptr
;
464 struct membership
*msptr
;
465 hook_data_client hclientinfo
;
466 hook_data_channel hchaninfo
;
473 hclientinfo
.client
= hchaninfo
.client
= client_p
;
475 RB_DLINK_FOREACH(ptr
, global_client_list
.head
)
477 target_p
= ptr
->data
;
479 if(!IsPerson(target_p
))
482 send_umode(NULL
, target_p
, 0, 0, ubuf
);
489 if(IsCapable(client_p
, CAP_EUID
))
490 sendto_one(client_p
, ":%s EUID %s %d %ld %s %s %s %s %s %s %s :%s",
491 target_p
->servptr
->id
, target_p
->name
,
492 target_p
->hopcount
+ 1,
493 (long) target_p
->tsinfo
, ubuf
,
494 target_p
->username
, target_p
->host
,
495 IsIPSpoof(target_p
) ? "0" : target_p
->sockhost
,
497 IsDynSpoof(target_p
) ? target_p
->orighost
: "*",
498 EmptyString(target_p
->user
->suser
) ? "*" : target_p
->user
->suser
,
501 sendto_one(client_p
, ":%s UID %s %d %ld %s %s %s %s %s :%s",
502 target_p
->servptr
->id
, target_p
->name
,
503 target_p
->hopcount
+ 1,
504 (long) target_p
->tsinfo
, ubuf
,
505 target_p
->username
, target_p
->host
,
506 IsIPSpoof(target_p
) ? "0" : target_p
->sockhost
,
507 target_p
->id
, target_p
->info
);
509 if(!IsCapable(client_p
, CAP_EUID
))
511 if(IsDynSpoof(target_p
))
512 sendto_one(client_p
, ":%s ENCAP * REALHOST %s",
513 use_id(target_p
), target_p
->orighost
);
514 if(!EmptyString(target_p
->user
->suser
))
515 sendto_one(client_p
, ":%s ENCAP * LOGIN %s",
516 use_id(target_p
), target_p
->user
->suser
);
519 if(ConfigFileEntry
.burst_away
&& !EmptyString(target_p
->user
->away
))
520 sendto_one(client_p
, ":%s AWAY :%s",
522 target_p
->user
->away
);
524 hclientinfo
.target
= target_p
;
525 call_hook(h_burst_client
, &hclientinfo
);
528 RB_DLINK_FOREACH(ptr
, global_channel_list
.head
)
532 if(*chptr
->chname
!= '#')
535 cur_len
= mlen
= rb_sprintf(buf
, ":%s SJOIN %ld %s %s :", me
.id
,
536 (long) chptr
->channelts
, chptr
->chname
,
537 channel_modes(chptr
, client_p
));
541 RB_DLINK_FOREACH(uptr
, chptr
->members
.head
)
545 tlen
= strlen(use_id(msptr
->client_p
)) + 1;
551 if(cur_len
+ tlen
>= BUFSIZE
- 3)
554 sendto_one(client_p
, "%s", buf
);
559 rb_sprintf(t
, "%s%s ", find_channel_status(msptr
, 1),
560 use_id(msptr
->client_p
));
566 if (rb_dlink_list_length(&chptr
->members
) > 0)
568 /* remove trailing space */
571 sendto_one(client_p
, "%s", buf
);
573 if(rb_dlink_list_length(&chptr
->banlist
) > 0)
574 burst_modes_TS6(client_p
, chptr
, &chptr
->banlist
, 'b');
576 if(IsCapable(client_p
, CAP_EX
) &&
577 rb_dlink_list_length(&chptr
->exceptlist
) > 0)
578 burst_modes_TS6(client_p
, chptr
, &chptr
->exceptlist
, 'e');
580 if(IsCapable(client_p
, CAP_IE
) &&
581 rb_dlink_list_length(&chptr
->invexlist
) > 0)
582 burst_modes_TS6(client_p
, chptr
, &chptr
->invexlist
, 'I');
584 if(rb_dlink_list_length(&chptr
->quietlist
) > 0)
585 burst_modes_TS6(client_p
, chptr
, &chptr
->quietlist
, 'q');
587 if(IsCapable(client_p
, CAP_TB
) && chptr
->topic
!= NULL
)
588 sendto_one(client_p
, ":%s TB %s %ld %s%s:%s",
589 me
.id
, chptr
->chname
, (long) chptr
->topic_time
,
590 ConfigChannel
.burst_topicwho
? chptr
->topic_info
: "",
591 ConfigChannel
.burst_topicwho
? " " : "",
594 hchaninfo
.chptr
= chptr
;
595 call_hook(h_burst_channel
, &hchaninfo
);
598 hclientinfo
.target
= NULL
;
599 call_hook(h_burst_finished
, &hclientinfo
);
603 * show_capabilities - show current server capabilities
605 * inputs - pointer to an struct Client
606 * output - pointer to static string
607 * side effects - build up string representing capabilities of server listed
610 show_capabilities(struct Client
*target_p
)
612 static char msgbuf
[BUFSIZE
];
613 struct Capability
*cap
;
616 rb_strlcpy(msgbuf
, " TS6", sizeof(msgbuf
));
619 rb_strlcat(msgbuf
, " SSL", sizeof(msgbuf
));
621 if(!IsServer(target_p
) || !target_p
->serv
->caps
) /* short circuit if no caps */
624 for (cap
= captab
; cap
->cap
; ++cap
)
626 if(cap
->cap
& target_p
->serv
->caps
)
627 rb_snprintf_append(msgbuf
, sizeof(msgbuf
), " %s", cap
->name
);
636 * inputs - pointer to a struct Client
641 server_estab(struct Client
*client_p
)
643 struct Client
*target_p
;
644 struct server_conf
*server_p
;
645 hook_data_client hdata
;
648 char note
[HOSTLEN
+ 15];
650 s_assert(NULL
!= client_p
);
654 host
= client_p
->name
;
656 if((server_p
= client_p
->localClient
->att_sconf
) == NULL
)
658 /* This shouldn't happen, better tell the ops... -A1kmm */
659 sendto_realops_snomask(SNO_GENERAL
, is_remote_connect(client_p
) ? L_NETWIDE
: L_ALL
,
660 "Warning: Lost connect{} block for server %s!", host
);
661 return exit_client(client_p
, client_p
, client_p
, "Lost connect{} block!");
664 /* We shouldn't have to check this, it should already done before
665 * server_estab is called. -A1kmm
667 if(client_p
->localClient
->passwd
)
669 memset(client_p
->localClient
->passwd
, 0, strlen(client_p
->localClient
->passwd
));
670 rb_free(client_p
->localClient
->passwd
);
671 client_p
->localClient
->passwd
= NULL
;
674 /* Its got identd , since its a server */
677 /* If there is something in the serv_list, it might be this
678 * connecting server..
680 if(!ServerInfo
.hub
&& serv_list
.head
)
682 if(client_p
!= serv_list
.head
->data
|| serv_list
.head
->next
)
684 ServerStats
.is_ref
++;
685 sendto_one(client_p
, "ERROR :I'm a leaf not a hub");
686 return exit_client(client_p
, client_p
, client_p
, "I'm a leaf");
690 if(IsUnknown(client_p
))
693 * jdc -- 1. Use EmptyString(), not [0] index reference.
694 * 2. Check ->spasswd, not ->passwd.
696 if(!EmptyString(server_p
->spasswd
))
698 sendto_one(client_p
, "PASS %s TS %d :%s",
699 server_p
->spasswd
, TS_CURRENT
, me
.id
);
702 /* pass info to new server */
703 send_capabilities(client_p
, default_server_capabs
704 | (ServerConfCompressed(server_p
) ? CAP_ZIP_SUPPORTED
: 0)
705 | (ServerConfTb(server_p
) ? CAP_TB
: 0));
707 sendto_one(client_p
, "SERVER %s 1 :%s%s",
709 ConfigServerHide
.hidden
? "(H) " : "",
710 (me
.info
[0]) ? (me
.info
) : "IRCers United");
713 if(!rb_set_buffers(client_p
->localClient
->F
, READBUF_SIZE
))
714 ilog_error("rb_set_buffers failed for server");
716 /* Enable compression now */
717 if(IsCapable(client_p
, CAP_ZIP
))
719 start_zlib_session(client_p
);
721 sendto_one(client_p
, "SVINFO %d %d 0 :%ld", TS_CURRENT
, TS_MIN
, (long int)rb_current_time());
723 client_p
->servptr
= &me
;
725 if(IsAnyDead(client_p
))
726 return CLIENT_EXITED
;
730 /* Update the capability combination usage counts */
731 set_chcap_usage_counts(client_p
);
733 rb_dlinkAdd(client_p
, &client_p
->lnode
, &me
.serv
->servers
);
734 rb_dlinkMoveNode(&client_p
->localClient
->tnode
, &unknown_list
, &serv_list
);
735 rb_dlinkAddTailAlloc(client_p
, &global_serv_list
);
738 add_to_id_hash(client_p
->id
, client_p
);
740 add_to_client_hash(client_p
->name
, client_p
);
741 /* doesnt duplicate client_p->serv if allocated this struct already */
742 make_server(client_p
);
744 client_p
->serv
->caps
= client_p
->localClient
->caps
;
746 if(client_p
->localClient
->fullcaps
)
748 client_p
->serv
->fullcaps
= rb_strdup(client_p
->localClient
->fullcaps
);
749 rb_free(client_p
->localClient
->fullcaps
);
750 client_p
->localClient
->fullcaps
= NULL
;
753 client_p
->serv
->nameinfo
= scache_connect(client_p
->name
, client_p
->info
, IsHidden(client_p
));
754 client_p
->localClient
->firsttime
= rb_current_time();
755 /* fixing eob timings.. -gnp */
757 if((rb_dlink_list_length(&lclient_list
) + rb_dlink_list_length(&serv_list
)) >
758 (unsigned long)MaxConnectionCount
)
759 MaxConnectionCount
= rb_dlink_list_length(&lclient_list
) +
760 rb_dlink_list_length(&serv_list
);
762 /* Show the real host/IP to admins */
763 sendto_realops_snomask(SNO_GENERAL
, L_ALL
,
764 "Link with %s established: (%s) link",
766 show_capabilities(client_p
));
768 ilog(L_SERVER
, "Link with %s established: (%s) link",
769 log_client_name(client_p
, SHOW_IP
), show_capabilities(client_p
));
772 hdata
.target
= client_p
;
773 call_hook(h_server_introduced
, &hdata
);
775 rb_snprintf(note
, sizeof(note
), "Server: %s", client_p
->name
);
776 rb_note(client_p
->localClient
->F
, note
);
779 ** Old sendto_serv_but_one() call removed because we now
780 ** need to send different names to different servers
781 ** (domain name matching) Send new server to other servers.
783 RB_DLINK_FOREACH(ptr
, serv_list
.head
)
785 target_p
= ptr
->data
;
787 if(target_p
== client_p
)
790 if(has_id(target_p
) && has_id(client_p
))
792 sendto_one(target_p
, ":%s SID %s 2 %s :%s%s",
793 me
.id
, client_p
->name
, client_p
->id
,
794 IsHidden(client_p
) ? "(H) " : "", client_p
->info
);
796 if(IsCapable(target_p
, CAP_ENCAP
) &&
797 !EmptyString(client_p
->serv
->fullcaps
))
798 sendto_one(target_p
, ":%s ENCAP * GCAP :%s",
799 client_p
->id
, client_p
->serv
->fullcaps
);
803 sendto_one(target_p
, ":%s SERVER %s 2 :%s%s",
804 me
.name
, client_p
->name
,
805 IsHidden(client_p
) ? "(H) " : "", client_p
->info
);
807 if(IsCapable(target_p
, CAP_ENCAP
) &&
808 !EmptyString(client_p
->serv
->fullcaps
))
809 sendto_one(target_p
, ":%s ENCAP * GCAP :%s",
810 client_p
->name
, client_p
->serv
->fullcaps
);
815 ** Pass on my client information to the new server
817 ** First, pass only servers (idea is that if the link gets
818 ** cancelled beacause the server was already there,
819 ** there are no NICK's to be cancelled...). Of course,
820 ** if cancellation occurs, all this info is sent anyway,
821 ** and I guess the link dies when a read is attempted...? --msa
823 ** Note: Link cancellation to occur at this point means
824 ** that at least two servers from my fragment are building
825 ** up connection this other fragment at the same time, it's
826 ** a race condition, not the normal way of operation...
828 ** ALSO NOTE: using the get_client_name for server names--
829 ** see previous *WARNING*!!! (Also, original inpath
832 RB_DLINK_FOREACH(ptr
, global_serv_list
.head
)
834 target_p
= ptr
->data
;
836 /* target_p->from == target_p for target_p == client_p */
837 if(IsMe(target_p
) || target_p
->from
== client_p
)
840 /* presumption, if target has an id, so does its uplink */
841 if(has_id(client_p
) && has_id(target_p
))
842 sendto_one(client_p
, ":%s SID %s %d %s :%s%s",
843 target_p
->servptr
->id
, target_p
->name
,
844 target_p
->hopcount
+ 1, target_p
->id
,
845 IsHidden(target_p
) ? "(H) " : "", target_p
->info
);
847 sendto_one(client_p
, ":%s SERVER %s %d :%s%s",
848 target_p
->servptr
->name
,
849 target_p
->name
, target_p
->hopcount
+ 1,
850 IsHidden(target_p
) ? "(H) " : "", target_p
->info
);
852 if(IsCapable(client_p
, CAP_ENCAP
) &&
853 !EmptyString(target_p
->serv
->fullcaps
))
854 sendto_one(client_p
, ":%s ENCAP * GCAP :%s",
855 get_id(target_p
, client_p
),
856 target_p
->serv
->fullcaps
);
861 /* Always send a PING after connect burst is done */
862 sendto_one(client_p
, "PING :%s", get_id(&me
, client_p
));
864 free_pre_client(client_p
);
866 send_pop_queue(client_p
);
872 * New server connection code
873 * Based upon the stuff floating about in s_bsd.c
878 serv_connect_resolved(struct Client
*client_p
)
880 struct rb_sockaddr_storage myipnum
;
881 char vhoststr
[HOSTIPLEN
];
882 struct server_conf
*server_p
;
885 if((server_p
= client_p
->localClient
->att_sconf
) == NULL
)
887 sendto_realops_snomask(SNO_GENERAL
, is_remote_connect(client_p
) ? L_NETWIDE
: L_ALL
, "Lost connect{} block for %s",
889 exit_client(client_p
, client_p
, &me
, "Lost connect{} block");
894 if(client_p
->localClient
->ip
.ss_family
== AF_INET6
)
895 port
= ntohs(((struct sockaddr_in6
*)&client_p
->localClient
->ip
)->sin6_port
);
898 port
= ntohs(((struct sockaddr_in
*)&client_p
->localClient
->ip
)->sin_port
);
900 if(ServerConfVhosted(server_p
))
902 memcpy(&myipnum
, &server_p
->my_ipnum
, sizeof(myipnum
));
903 ((struct sockaddr_in
*)&myipnum
)->sin_port
= 0;
904 myipnum
.ss_family
= server_p
->aftype
;
907 else if(server_p
->aftype
== AF_INET
&& ServerInfo
.specific_ipv4_vhost
)
909 memcpy(&myipnum
, &ServerInfo
.ip
, sizeof(myipnum
));
910 ((struct sockaddr_in
*)&myipnum
)->sin_port
= 0;
911 myipnum
.ss_family
= AF_INET
;
912 SET_SS_LEN(&myipnum
, sizeof(struct sockaddr_in
));
916 else if((server_p
->aftype
== AF_INET6
) && ServerInfo
.specific_ipv6_vhost
)
918 memcpy(&myipnum
, &ServerInfo
.ip6
, sizeof(myipnum
));
919 ((struct sockaddr_in6
*)&myipnum
)->sin6_port
= 0;
920 myipnum
.ss_family
= AF_INET6
;
921 SET_SS_LEN(&myipnum
, sizeof(struct sockaddr_in6
));
927 ilog(L_SERVER
, "Connecting to %s[%s] port %d (%s)", client_p
->name
, client_p
->sockhost
, port
,
929 server_p
->aftype
== AF_INET6
? "IPv6" :
931 (server_p
->aftype
== AF_INET
? "IPv4" : "?"));
933 if(ServerConfSSL(server_p
))
935 rb_connect_tcp(client_p
->localClient
->F
, (struct sockaddr
*)&client_p
->localClient
->ip
,
936 NULL
, 0, serv_connect_ssl_callback
,
937 client_p
, ConfigFileEntry
.connect_timeout
);
940 rb_connect_tcp(client_p
->localClient
->F
, (struct sockaddr
*)&client_p
->localClient
->ip
,
941 NULL
, 0, serv_connect_callback
,
942 client_p
, ConfigFileEntry
.connect_timeout
);
947 rb_inet_ntop_sock((struct sockaddr
*)&myipnum
, vhoststr
, sizeof vhoststr
);
948 ilog(L_SERVER
, "Connecting to %s[%s] port %d (%s) (vhost %s)", client_p
->name
, client_p
->sockhost
, port
,
950 server_p
->aftype
== AF_INET6
? "IPv6" :
952 (server_p
->aftype
== AF_INET
? "IPv4" : "?"), vhoststr
);
955 if(ServerConfSSL(server_p
))
956 rb_connect_tcp(client_p
->localClient
->F
, (struct sockaddr
*)&client_p
->localClient
->ip
,
957 (struct sockaddr
*) &myipnum
,
958 GET_SS_LEN(&myipnum
), serv_connect_ssl_callback
, client_p
,
959 ConfigFileEntry
.connect_timeout
);
961 rb_connect_tcp(client_p
->localClient
->F
, (struct sockaddr
*)&client_p
->localClient
->ip
,
962 (struct sockaddr
*) &myipnum
,
963 GET_SS_LEN(&myipnum
), serv_connect_callback
, client_p
,
964 ConfigFileEntry
.connect_timeout
);
970 serv_connect_dns_callback(void *vptr
, struct DNSReply
*reply
)
972 struct Client
*client_p
= vptr
;
975 rb_free(client_p
->localClient
->dnsquery
);
976 client_p
->localClient
->dnsquery
= NULL
;
980 sendto_realops_snomask(SNO_GENERAL
, is_remote_connect(client_p
) ? L_NETWIDE
: L_ALL
, "Cannot resolve hostname for %s",
982 ilog(L_SERVER
, "Cannot resolve hostname for %s",
983 log_client_name(client_p
, HIDE_IP
));
984 exit_client(client_p
, client_p
, &me
, "Cannot resolve hostname");
988 if(reply
->addr
.ss_family
== AF_INET6
)
989 port
= ((struct sockaddr_in6
*)&client_p
->localClient
->ip
)->sin6_port
;
992 port
= ((struct sockaddr_in
*)&client_p
->localClient
->ip
)->sin_port
;
993 memcpy(&client_p
->localClient
->ip
, &reply
->addr
, sizeof(client_p
->localClient
->ip
));
995 if(reply
->addr
.ss_family
== AF_INET6
)
996 ((struct sockaddr_in6
*)&client_p
->localClient
->ip
)->sin6_port
= port
;
999 ((struct sockaddr_in
*)&client_p
->localClient
->ip
)->sin_port
= port
;
1000 /* Set sockhost properly now -- jilles */
1001 rb_inet_ntop_sock((struct sockaddr
*)&client_p
->localClient
->ip
,
1002 client_p
->sockhost
, sizeof client_p
->sockhost
);
1003 serv_connect_resolved(client_p
);
1007 * serv_connect() - initiate a server connection
1009 * inputs - pointer to conf
1010 * - pointer to client doing the connet
1014 * This code initiates a connection to a server. It first checks to make
1015 * sure the given server exists. If this is the case, it creates a socket,
1016 * creates a client, saves the socket information in the client, and
1017 * initiates a connection to the server through rb_connect_tcp(). The
1018 * completion of this goes through serv_completed_connection().
1020 * We return 1 if the connection is attempted, since we don't know whether
1021 * it suceeded or not, and 0 if it fails in here somewhere.
1024 serv_connect(struct server_conf
*server_p
, struct Client
*by
)
1026 struct Client
*client_p
;
1027 struct rb_sockaddr_storage theiripnum
;
1029 char note
[HOSTLEN
+ 10];
1031 s_assert(server_p
!= NULL
);
1032 if(server_p
== NULL
)
1036 * Make sure this server isn't already connected
1038 if((client_p
= find_server(NULL
, server_p
->name
)))
1040 sendto_realops_snomask(SNO_GENERAL
, L_ALL
,
1041 "Server %s already present from %s",
1042 server_p
->name
, client_p
->name
);
1043 if(by
&& IsPerson(by
) && !MyClient(by
))
1044 sendto_one_notice(by
, ":Server %s already present from %s",
1045 server_p
->name
, client_p
->name
);
1049 /* create a socket for the server connection */
1050 if((F
= rb_socket(server_p
->aftype
, SOCK_STREAM
, 0, NULL
)) == NULL
)
1052 ilog_error("opening a stream socket");
1056 rb_snprintf(note
, sizeof note
, "Server: %s", server_p
->name
);
1059 /* Create a local client */
1060 client_p
= make_client(NULL
);
1062 /* Copy in the server, hostname, fd
1063 * The sockhost may be a hostname, this will be corrected later
1066 rb_strlcpy(client_p
->name
, server_p
->name
, sizeof(client_p
->name
));
1067 rb_strlcpy(client_p
->host
, server_p
->host
, sizeof(client_p
->host
));
1068 rb_strlcpy(client_p
->sockhost
, server_p
->host
, sizeof(client_p
->sockhost
));
1069 client_p
->localClient
->F
= F
;
1070 add_to_cli_fd_hash(client_p
);
1073 * Set up the initial server evilness, ripped straight from
1074 * connect_server(), so don't blame me for it being evil.
1078 if(!rb_set_buffers(client_p
->localClient
->F
, READBUF_SIZE
))
1080 ilog_error("setting the buffer size for a server connection");
1084 * Attach config entries to client here rather than in
1085 * serv_connect_callback(). This to avoid null pointer references.
1087 attach_server_conf(client_p
, server_p
);
1090 * at this point we have a connection in progress and C/N lines
1091 * attached to the client, the socket info should be saved in the
1092 * client and it should either be resolved or have a valid address.
1094 * The socket has been connected or connect is in progress.
1096 make_server(client_p
);
1097 if(by
&& IsPerson(by
))
1099 strcpy(client_p
->serv
->by
, by
->name
);
1100 if(client_p
->serv
->user
)
1101 free_user(client_p
->serv
->user
, NULL
);
1102 client_p
->serv
->user
= by
->user
;
1107 strcpy(client_p
->serv
->by
, "AutoConn.");
1108 if(client_p
->serv
->user
)
1109 free_user(client_p
->serv
->user
, NULL
);
1110 client_p
->serv
->user
= NULL
;
1112 SetConnecting(client_p
);
1113 rb_dlinkAddTail(client_p
, &client_p
->node
, &global_client_list
);
1115 if (rb_inet_pton_sock(server_p
->host
, (struct sockaddr
*)&theiripnum
) > 0)
1117 memcpy(&client_p
->localClient
->ip
, &theiripnum
, sizeof(client_p
->localClient
->ip
));
1119 if(theiripnum
.ss_family
== AF_INET6
)
1120 ((struct sockaddr_in6
*)&client_p
->localClient
->ip
)->sin6_port
= htons(server_p
->port
);
1123 ((struct sockaddr_in
*)&client_p
->localClient
->ip
)->sin_port
= htons(server_p
->port
);
1125 return serv_connect_resolved(client_p
);
1130 if(theiripnum
.ss_family
== AF_INET6
)
1131 ((struct sockaddr_in6
*)&client_p
->localClient
->ip
)->sin6_port
= htons(server_p
->port
);
1134 ((struct sockaddr_in
*)&client_p
->localClient
->ip
)->sin_port
= htons(server_p
->port
);
1136 client_p
->localClient
->dnsquery
= rb_malloc(sizeof(struct DNSQuery
));
1137 client_p
->localClient
->dnsquery
->ptr
= client_p
;
1138 client_p
->localClient
->dnsquery
->callback
= serv_connect_dns_callback
;
1139 gethost_byname_type(server_p
->host
, client_p
->localClient
->dnsquery
,
1141 server_p
->aftype
== AF_INET6
? T_AAAA
:
1149 serv_connect_ssl_callback(rb_fde_t
*F
, int status
, void *data
)
1151 struct Client
*client_p
= data
;
1153 rb_connect_sockaddr(F
, (struct sockaddr
*)&client_p
->localClient
->ip
, sizeof(client_p
->localClient
->ip
));
1156 /* Print error message, just like non-SSL. */
1157 serv_connect_callback(F
, status
, data
);
1160 if(rb_socketpair(AF_UNIX
, SOCK_STREAM
, 0, &xF
[0], &xF
[1], "Outgoing ssld connection") == -1)
1162 ilog_error("rb_socketpair failed for server");
1163 serv_connect_callback(F
, RB_ERROR
, data
);
1167 del_from_cli_fd_hash(client_p
);
1168 client_p
->localClient
->F
= xF
[0];
1169 add_to_cli_fd_hash(client_p
);
1171 client_p
->localClient
->ssl_ctl
= start_ssld_connect(F
, xF
[1], rb_get_fd(xF
[0]));
1173 serv_connect_callback(client_p
->localClient
->F
, RB_OK
, client_p
);
1177 * serv_connect_callback() - complete a server connection.
1179 * This routine is called after the server connection attempt has
1180 * completed. If unsucessful, an error is sent to ops and the client
1181 * is closed. If sucessful, it goes through the initialisation/check
1182 * procedures, the capabilities are sent, and the socket is then
1183 * marked for reading.
1186 serv_connect_callback(rb_fde_t
*F
, int status
, void *data
)
1188 struct Client
*client_p
= data
;
1189 struct server_conf
*server_p
;
1192 /* First, make sure its a real client! */
1193 s_assert(client_p
!= NULL
);
1194 s_assert(client_p
->localClient
->F
== F
);
1196 if(client_p
== NULL
)
1199 /* while we were waiting for the callback, its possible this already
1202 if(find_server(NULL
, client_p
->name
) != NULL
)
1204 exit_client(client_p
, client_p
, &me
, "Server Exists");
1208 if(client_p
->localClient
->ssl_ctl
== NULL
)
1209 rb_connect_sockaddr(F
, (struct sockaddr
*)&client_p
->localClient
->ip
, sizeof(client_p
->localClient
->ip
));
1211 /* Check the status */
1214 /* COMM_ERR_TIMEOUT wont have an errno associated with it,
1215 * the others will.. --fl
1217 if(status
== RB_ERR_TIMEOUT
)
1219 sendto_realops_snomask(SNO_GENERAL
, is_remote_connect(client_p
) ? L_NETWIDE
: L_ALL
,
1220 "Error connecting to %s[%s]: %s",
1224 ilog(L_SERVER
, "Error connecting to %s[%s]: %s",
1225 client_p
->name
, client_p
->sockhost
,
1230 errstr
= strerror(rb_get_sockerr(F
));
1231 sendto_realops_snomask(SNO_GENERAL
, is_remote_connect(client_p
) ? L_NETWIDE
: L_ALL
,
1232 "Error connecting to %s[%s]: %s (%s)",
1235 rb_errstr(status
), errstr
);
1236 ilog(L_SERVER
, "Error connecting to %s[%s]: %s (%s)",
1237 client_p
->name
, client_p
->sockhost
,
1238 rb_errstr(status
), errstr
);
1241 exit_client(client_p
, client_p
, &me
, rb_errstr(status
));
1245 /* COMM_OK, so continue the connection procedure */
1246 /* Get the C/N lines */
1247 if((server_p
= client_p
->localClient
->att_sconf
) == NULL
)
1249 sendto_realops_snomask(SNO_GENERAL
, is_remote_connect(client_p
) ? L_NETWIDE
: L_ALL
, "Lost connect{} block for %s",
1251 exit_client(client_p
, client_p
, &me
, "Lost connect{} block");
1255 /* Next, send the initial handshake */
1256 SetHandshake(client_p
);
1258 if(!EmptyString(server_p
->spasswd
))
1260 sendto_one(client_p
, "PASS %s TS %d :%s",
1261 server_p
->spasswd
, TS_CURRENT
, me
.id
);
1264 /* pass my info to the new server */
1265 send_capabilities(client_p
, default_server_capabs
1266 | (ServerConfCompressed(server_p
) ? CAP_ZIP_SUPPORTED
: 0)
1267 | (ServerConfTb(server_p
) ? CAP_TB
: 0));
1269 sendto_one(client_p
, "SERVER %s 1 :%s%s",
1271 ConfigServerHide
.hidden
? "(H) " : "", me
.info
);
1274 * If we've been marked dead because a send failed, just exit
1275 * here now and save everyone the trouble of us ever existing.
1277 if(IsAnyDead(client_p
))
1279 sendto_realops_snomask(SNO_GENERAL
, is_remote_connect(client_p
) ? L_NETWIDE
: L_ALL
,
1280 "%s went dead during handshake", client_p
->name
);
1281 exit_client(client_p
, client_p
, &me
, "Went dead during handshake");
1285 /* don't move to serv_list yet -- we haven't sent a burst! */
1287 /* If we get here, we're ok, so lets start reading some data */
1288 read_packet(F
, client_p
);