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 const char *awaymsg
= NULL
;
479 target_p
= ptr
->data
;
481 if(!IsPerson(target_p
))
484 send_umode(NULL
, target_p
, 0, 0, ubuf
);
491 if(IsCapable(client_p
, CAP_EUID
))
492 sendto_one(client_p
, ":%s EUID %s %d %ld %s %s %s %s %s %s %s :%s",
493 target_p
->servptr
->id
, target_p
->name
,
494 target_p
->hopcount
+ 1,
495 (long) target_p
->tsinfo
, ubuf
,
496 target_p
->username
, target_p
->host
,
497 IsIPSpoof(target_p
) ? "0" : target_p
->sockhost
,
499 IsDynSpoof(target_p
) ? target_p
->orighost
: "*",
500 EmptyString(target_p
->user
->suser
) ? "*" : target_p
->user
->suser
,
503 sendto_one(client_p
, ":%s UID %s %d %ld %s %s %s %s %s :%s",
504 target_p
->servptr
->id
, target_p
->name
,
505 target_p
->hopcount
+ 1,
506 (long) target_p
->tsinfo
, ubuf
,
507 target_p
->username
, target_p
->host
,
508 IsIPSpoof(target_p
) ? "0" : target_p
->sockhost
,
509 target_p
->id
, target_p
->info
);
511 if(!IsCapable(client_p
, CAP_EUID
))
513 if(IsDynSpoof(target_p
))
514 sendto_one(client_p
, ":%s ENCAP * REALHOST %s",
515 use_id(target_p
), target_p
->orighost
);
516 if(!EmptyString(target_p
->user
->suser
))
517 sendto_one(client_p
, ":%s ENCAP * LOGIN %s",
518 use_id(target_p
), target_p
->user
->suser
);
521 if(ConfigFileEntry
.burst_away
&& (awaymsg
= get_metadata(target_p
, "away")) != NULL
)
522 sendto_one(client_p
, ":%s AWAY :%s",
526 hclientinfo
.target
= target_p
;
527 call_hook(h_burst_client
, &hclientinfo
);
530 RB_DLINK_FOREACH(ptr
, global_channel_list
.head
)
534 if(*chptr
->chname
!= '#')
537 cur_len
= mlen
= rb_sprintf(buf
, ":%s SJOIN %ld %s %s :", me
.id
,
538 (long) chptr
->channelts
, chptr
->chname
,
539 channel_modes(chptr
, client_p
));
543 RB_DLINK_FOREACH(uptr
, chptr
->members
.head
)
547 tlen
= strlen(use_id(msptr
->client_p
)) + 1;
553 if(cur_len
+ tlen
>= BUFSIZE
- 3)
556 sendto_one(client_p
, "%s", buf
);
561 rb_sprintf(t
, "%s%s ", find_channel_status(msptr
, 1),
562 use_id(msptr
->client_p
));
568 if (rb_dlink_list_length(&chptr
->members
) > 0)
570 /* remove trailing space */
573 sendto_one(client_p
, "%s", buf
);
575 if(rb_dlink_list_length(&chptr
->banlist
) > 0)
576 burst_modes_TS6(client_p
, chptr
, &chptr
->banlist
, 'b');
578 if(IsCapable(client_p
, CAP_EX
) &&
579 rb_dlink_list_length(&chptr
->exceptlist
) > 0)
580 burst_modes_TS6(client_p
, chptr
, &chptr
->exceptlist
, 'e');
582 if(IsCapable(client_p
, CAP_IE
) &&
583 rb_dlink_list_length(&chptr
->invexlist
) > 0)
584 burst_modes_TS6(client_p
, chptr
, &chptr
->invexlist
, 'I');
586 if(rb_dlink_list_length(&chptr
->quietlist
) > 0)
587 burst_modes_TS6(client_p
, chptr
, &chptr
->quietlist
, 'q');
589 if(IsCapable(client_p
, CAP_TB
) && chptr
->topic
!= NULL
)
590 sendto_one(client_p
, ":%s TB %s %ld %s%s:%s",
591 me
.id
, chptr
->chname
, (long) chptr
->topic_time
,
592 ConfigChannel
.burst_topicwho
? chptr
->topic_info
: "",
593 ConfigChannel
.burst_topicwho
? " " : "",
596 hchaninfo
.chptr
= chptr
;
597 call_hook(h_burst_channel
, &hchaninfo
);
600 hclientinfo
.target
= NULL
;
601 call_hook(h_burst_finished
, &hclientinfo
);
605 * show_capabilities - show current server capabilities
607 * inputs - pointer to an struct Client
608 * output - pointer to static string
609 * side effects - build up string representing capabilities of server listed
612 show_capabilities(struct Client
*target_p
)
614 static char msgbuf
[BUFSIZE
];
615 struct Capability
*cap
;
618 rb_strlcpy(msgbuf
, " TS6", sizeof(msgbuf
));
621 rb_strlcat(msgbuf
, " SSL", sizeof(msgbuf
));
623 if(!IsServer(target_p
) || !target_p
->serv
->caps
) /* short circuit if no caps */
626 for (cap
= captab
; cap
->cap
; ++cap
)
628 if(cap
->cap
& target_p
->serv
->caps
)
629 rb_snprintf_append(msgbuf
, sizeof(msgbuf
), " %s", cap
->name
);
638 * inputs - pointer to a struct Client
643 server_estab(struct Client
*client_p
)
645 struct Client
*target_p
;
646 struct server_conf
*server_p
;
647 hook_data_client hdata
;
650 char note
[HOSTLEN
+ 15];
652 s_assert(NULL
!= client_p
);
656 host
= client_p
->name
;
658 if((server_p
= client_p
->localClient
->att_sconf
) == NULL
)
660 /* This shouldn't happen, better tell the ops... -A1kmm */
661 sendto_realops_snomask(SNO_GENERAL
, is_remote_connect(client_p
) ? L_NETWIDE
: L_ALL
,
662 "Warning: Lost connect{} block for server %s!", host
);
663 return exit_client(client_p
, client_p
, client_p
, "Lost connect{} block!");
666 /* We shouldn't have to check this, it should already done before
667 * server_estab is called. -A1kmm
669 if(client_p
->localClient
->passwd
)
671 memset(client_p
->localClient
->passwd
, 0, strlen(client_p
->localClient
->passwd
));
672 rb_free(client_p
->localClient
->passwd
);
673 client_p
->localClient
->passwd
= NULL
;
676 /* Its got identd , since its a server */
679 /* If there is something in the serv_list, it might be this
680 * connecting server..
682 if(!ServerInfo
.hub
&& serv_list
.head
)
684 if(client_p
!= serv_list
.head
->data
|| serv_list
.head
->next
)
686 ServerStats
.is_ref
++;
687 sendto_one(client_p
, "ERROR :I'm a leaf not a hub");
688 return exit_client(client_p
, client_p
, client_p
, "I'm a leaf");
692 if(IsUnknown(client_p
))
695 * jdc -- 1. Use EmptyString(), not [0] index reference.
696 * 2. Check ->spasswd, not ->passwd.
698 if(!EmptyString(server_p
->spasswd
))
700 sendto_one(client_p
, "PASS %s TS %d :%s",
701 server_p
->spasswd
, TS_CURRENT
, me
.id
);
704 /* pass info to new server */
705 send_capabilities(client_p
, default_server_capabs
706 | (ServerConfCompressed(server_p
) ? CAP_ZIP_SUPPORTED
: 0)
707 | (ServerConfTb(server_p
) ? CAP_TB
: 0));
709 sendto_one(client_p
, "SERVER %s 1 :%s%s",
711 ConfigServerHide
.hidden
? "(H) " : "",
712 (me
.info
[0]) ? (me
.info
) : "IRCers United");
715 if(!rb_set_buffers(client_p
->localClient
->F
, READBUF_SIZE
))
716 ilog_error("rb_set_buffers failed for server");
718 /* Enable compression now */
719 if(IsCapable(client_p
, CAP_ZIP
))
721 start_zlib_session(client_p
);
723 sendto_one(client_p
, "SVINFO %d %d 0 :%ld", TS_CURRENT
, TS_MIN
, (long int)rb_current_time());
725 client_p
->servptr
= &me
;
727 if(IsAnyDead(client_p
))
728 return CLIENT_EXITED
;
732 /* Update the capability combination usage counts */
733 set_chcap_usage_counts(client_p
);
735 rb_dlinkAdd(client_p
, &client_p
->lnode
, &me
.serv
->servers
);
736 rb_dlinkMoveNode(&client_p
->localClient
->tnode
, &unknown_list
, &serv_list
);
737 rb_dlinkAddTailAlloc(client_p
, &global_serv_list
);
740 add_to_id_hash(client_p
->id
, client_p
);
742 add_to_client_hash(client_p
->name
, client_p
);
743 /* doesnt duplicate client_p->serv if allocated this struct already */
744 make_server(client_p
);
746 client_p
->serv
->caps
= client_p
->localClient
->caps
;
748 if(client_p
->localClient
->fullcaps
)
750 client_p
->serv
->fullcaps
= rb_strdup(client_p
->localClient
->fullcaps
);
751 rb_free(client_p
->localClient
->fullcaps
);
752 client_p
->localClient
->fullcaps
= NULL
;
755 client_p
->serv
->nameinfo
= scache_connect(client_p
->name
, client_p
->info
, IsHidden(client_p
));
756 client_p
->localClient
->firsttime
= rb_current_time();
757 /* fixing eob timings.. -gnp */
759 if((rb_dlink_list_length(&lclient_list
) + rb_dlink_list_length(&serv_list
)) >
760 (unsigned long)MaxConnectionCount
)
761 MaxConnectionCount
= rb_dlink_list_length(&lclient_list
) +
762 rb_dlink_list_length(&serv_list
);
764 /* Show the real host/IP to admins */
765 sendto_realops_snomask(SNO_GENERAL
, L_ALL
,
766 "Link with %s established: (%s) link",
768 show_capabilities(client_p
));
770 ilog(L_SERVER
, "Link with %s established: (%s) link",
771 log_client_name(client_p
, SHOW_IP
), show_capabilities(client_p
));
774 hdata
.target
= client_p
;
775 call_hook(h_server_introduced
, &hdata
);
777 rb_snprintf(note
, sizeof(note
), "Server: %s", client_p
->name
);
778 rb_note(client_p
->localClient
->F
, note
);
781 ** Old sendto_serv_but_one() call removed because we now
782 ** need to send different names to different servers
783 ** (domain name matching) Send new server to other servers.
785 RB_DLINK_FOREACH(ptr
, serv_list
.head
)
787 target_p
= ptr
->data
;
789 if(target_p
== client_p
)
792 if(has_id(target_p
) && has_id(client_p
))
794 sendto_one(target_p
, ":%s SID %s 2 %s :%s%s",
795 me
.id
, client_p
->name
, client_p
->id
,
796 IsHidden(client_p
) ? "(H) " : "", client_p
->info
);
798 if(IsCapable(target_p
, CAP_ENCAP
) &&
799 !EmptyString(client_p
->serv
->fullcaps
))
800 sendto_one(target_p
, ":%s ENCAP * GCAP :%s",
801 client_p
->id
, client_p
->serv
->fullcaps
);
805 sendto_one(target_p
, ":%s SERVER %s 2 :%s%s",
806 me
.name
, client_p
->name
,
807 IsHidden(client_p
) ? "(H) " : "", client_p
->info
);
809 if(IsCapable(target_p
, CAP_ENCAP
) &&
810 !EmptyString(client_p
->serv
->fullcaps
))
811 sendto_one(target_p
, ":%s ENCAP * GCAP :%s",
812 client_p
->name
, client_p
->serv
->fullcaps
);
817 ** Pass on my client information to the new server
819 ** First, pass only servers (idea is that if the link gets
820 ** cancelled beacause the server was already there,
821 ** there are no NICK's to be cancelled...). Of course,
822 ** if cancellation occurs, all this info is sent anyway,
823 ** and I guess the link dies when a read is attempted...? --msa
825 ** Note: Link cancellation to occur at this point means
826 ** that at least two servers from my fragment are building
827 ** up connection this other fragment at the same time, it's
828 ** a race condition, not the normal way of operation...
830 ** ALSO NOTE: using the get_client_name for server names--
831 ** see previous *WARNING*!!! (Also, original inpath
834 RB_DLINK_FOREACH(ptr
, global_serv_list
.head
)
836 target_p
= ptr
->data
;
838 /* target_p->from == target_p for target_p == client_p */
839 if(IsMe(target_p
) || target_p
->from
== client_p
)
842 /* presumption, if target has an id, so does its uplink */
843 if(has_id(client_p
) && has_id(target_p
))
844 sendto_one(client_p
, ":%s SID %s %d %s :%s%s",
845 target_p
->servptr
->id
, target_p
->name
,
846 target_p
->hopcount
+ 1, target_p
->id
,
847 IsHidden(target_p
) ? "(H) " : "", target_p
->info
);
849 sendto_one(client_p
, ":%s SERVER %s %d :%s%s",
850 target_p
->servptr
->name
,
851 target_p
->name
, target_p
->hopcount
+ 1,
852 IsHidden(target_p
) ? "(H) " : "", target_p
->info
);
854 if(IsCapable(client_p
, CAP_ENCAP
) &&
855 !EmptyString(target_p
->serv
->fullcaps
))
856 sendto_one(client_p
, ":%s ENCAP * GCAP :%s",
857 get_id(target_p
, client_p
),
858 target_p
->serv
->fullcaps
);
863 /* Always send a PING after connect burst is done */
864 sendto_one(client_p
, "PING :%s", get_id(&me
, client_p
));
866 free_pre_client(client_p
);
868 send_pop_queue(client_p
);
874 * New server connection code
875 * Based upon the stuff floating about in s_bsd.c
880 serv_connect_resolved(struct Client
*client_p
)
882 struct rb_sockaddr_storage myipnum
;
883 char vhoststr
[HOSTIPLEN
];
884 struct server_conf
*server_p
;
887 if((server_p
= client_p
->localClient
->att_sconf
) == NULL
)
889 sendto_realops_snomask(SNO_GENERAL
, is_remote_connect(client_p
) ? L_NETWIDE
: L_ALL
, "Lost connect{} block for %s",
891 exit_client(client_p
, client_p
, &me
, "Lost connect{} block");
896 if(client_p
->localClient
->ip
.ss_family
== AF_INET6
)
897 port
= ntohs(((struct sockaddr_in6
*)&client_p
->localClient
->ip
)->sin6_port
);
900 port
= ntohs(((struct sockaddr_in
*)&client_p
->localClient
->ip
)->sin_port
);
902 if(ServerConfVhosted(server_p
))
904 memcpy(&myipnum
, &server_p
->my_ipnum
, sizeof(myipnum
));
905 ((struct sockaddr_in
*)&myipnum
)->sin_port
= 0;
906 myipnum
.ss_family
= server_p
->aftype
;
909 else if(server_p
->aftype
== AF_INET
&& ServerInfo
.specific_ipv4_vhost
)
911 memcpy(&myipnum
, &ServerInfo
.ip
, sizeof(myipnum
));
912 ((struct sockaddr_in
*)&myipnum
)->sin_port
= 0;
913 myipnum
.ss_family
= AF_INET
;
914 SET_SS_LEN(&myipnum
, sizeof(struct sockaddr_in
));
918 else if((server_p
->aftype
== AF_INET6
) && ServerInfo
.specific_ipv6_vhost
)
920 memcpy(&myipnum
, &ServerInfo
.ip6
, sizeof(myipnum
));
921 ((struct sockaddr_in6
*)&myipnum
)->sin6_port
= 0;
922 myipnum
.ss_family
= AF_INET6
;
923 SET_SS_LEN(&myipnum
, sizeof(struct sockaddr_in6
));
929 ilog(L_SERVER
, "Connecting to %s[%s] port %d (%s)", client_p
->name
, client_p
->sockhost
, port
,
931 server_p
->aftype
== AF_INET6
? "IPv6" :
933 (server_p
->aftype
== AF_INET
? "IPv4" : "?"));
935 if(ServerConfSSL(server_p
))
937 rb_connect_tcp(client_p
->localClient
->F
, (struct sockaddr
*)&client_p
->localClient
->ip
,
938 NULL
, 0, serv_connect_ssl_callback
,
939 client_p
, ConfigFileEntry
.connect_timeout
);
942 rb_connect_tcp(client_p
->localClient
->F
, (struct sockaddr
*)&client_p
->localClient
->ip
,
943 NULL
, 0, serv_connect_callback
,
944 client_p
, ConfigFileEntry
.connect_timeout
);
949 rb_inet_ntop_sock((struct sockaddr
*)&myipnum
, vhoststr
, sizeof vhoststr
);
950 ilog(L_SERVER
, "Connecting to %s[%s] port %d (%s) (vhost %s)", client_p
->name
, client_p
->sockhost
, port
,
952 server_p
->aftype
== AF_INET6
? "IPv6" :
954 (server_p
->aftype
== AF_INET
? "IPv4" : "?"), vhoststr
);
957 if(ServerConfSSL(server_p
))
958 rb_connect_tcp(client_p
->localClient
->F
, (struct sockaddr
*)&client_p
->localClient
->ip
,
959 (struct sockaddr
*) &myipnum
,
960 GET_SS_LEN(&myipnum
), serv_connect_ssl_callback
, client_p
,
961 ConfigFileEntry
.connect_timeout
);
963 rb_connect_tcp(client_p
->localClient
->F
, (struct sockaddr
*)&client_p
->localClient
->ip
,
964 (struct sockaddr
*) &myipnum
,
965 GET_SS_LEN(&myipnum
), serv_connect_callback
, client_p
,
966 ConfigFileEntry
.connect_timeout
);
972 serv_connect_dns_callback(void *vptr
, struct DNSReply
*reply
)
974 struct Client
*client_p
= vptr
;
977 rb_free(client_p
->localClient
->dnsquery
);
978 client_p
->localClient
->dnsquery
= NULL
;
982 sendto_realops_snomask(SNO_GENERAL
, is_remote_connect(client_p
) ? L_NETWIDE
: L_ALL
, "Cannot resolve hostname for %s",
984 ilog(L_SERVER
, "Cannot resolve hostname for %s",
985 log_client_name(client_p
, HIDE_IP
));
986 exit_client(client_p
, client_p
, &me
, "Cannot resolve hostname");
990 if(reply
->addr
.ss_family
== AF_INET6
)
991 port
= ((struct sockaddr_in6
*)&client_p
->localClient
->ip
)->sin6_port
;
994 port
= ((struct sockaddr_in
*)&client_p
->localClient
->ip
)->sin_port
;
995 memcpy(&client_p
->localClient
->ip
, &reply
->addr
, sizeof(client_p
->localClient
->ip
));
997 if(reply
->addr
.ss_family
== AF_INET6
)
998 ((struct sockaddr_in6
*)&client_p
->localClient
->ip
)->sin6_port
= port
;
1001 ((struct sockaddr_in
*)&client_p
->localClient
->ip
)->sin_port
= port
;
1002 /* Set sockhost properly now -- jilles */
1003 rb_inet_ntop_sock((struct sockaddr
*)&client_p
->localClient
->ip
,
1004 client_p
->sockhost
, sizeof client_p
->sockhost
);
1005 serv_connect_resolved(client_p
);
1009 * serv_connect() - initiate a server connection
1011 * inputs - pointer to conf
1012 * - pointer to client doing the connet
1016 * This code initiates a connection to a server. It first checks to make
1017 * sure the given server exists. If this is the case, it creates a socket,
1018 * creates a client, saves the socket information in the client, and
1019 * initiates a connection to the server through rb_connect_tcp(). The
1020 * completion of this goes through serv_completed_connection().
1022 * We return 1 if the connection is attempted, since we don't know whether
1023 * it suceeded or not, and 0 if it fails in here somewhere.
1026 serv_connect(struct server_conf
*server_p
, struct Client
*by
)
1028 struct Client
*client_p
;
1029 struct rb_sockaddr_storage theiripnum
;
1031 char note
[HOSTLEN
+ 10];
1033 s_assert(server_p
!= NULL
);
1034 if(server_p
== NULL
)
1038 * Make sure this server isn't already connected
1040 if((client_p
= find_server(NULL
, server_p
->name
)))
1042 sendto_realops_snomask(SNO_GENERAL
, L_ALL
,
1043 "Server %s already present from %s",
1044 server_p
->name
, client_p
->name
);
1045 if(by
&& IsPerson(by
) && !MyClient(by
))
1046 sendto_one_notice(by
, ":Server %s already present from %s",
1047 server_p
->name
, client_p
->name
);
1051 /* create a socket for the server connection */
1052 if((F
= rb_socket(server_p
->aftype
, SOCK_STREAM
, 0, NULL
)) == NULL
)
1054 ilog_error("opening a stream socket");
1058 rb_snprintf(note
, sizeof note
, "Server: %s", server_p
->name
);
1061 /* Create a local client */
1062 client_p
= make_client(NULL
);
1064 /* Copy in the server, hostname, fd
1065 * The sockhost may be a hostname, this will be corrected later
1068 rb_strlcpy(client_p
->name
, server_p
->name
, sizeof(client_p
->name
));
1069 rb_strlcpy(client_p
->host
, server_p
->host
, sizeof(client_p
->host
));
1070 rb_strlcpy(client_p
->sockhost
, server_p
->host
, sizeof(client_p
->sockhost
));
1071 client_p
->localClient
->F
= F
;
1072 add_to_cli_fd_hash(client_p
);
1075 * Set up the initial server evilness, ripped straight from
1076 * connect_server(), so don't blame me for it being evil.
1080 if(!rb_set_buffers(client_p
->localClient
->F
, READBUF_SIZE
))
1082 ilog_error("setting the buffer size for a server connection");
1086 * Attach config entries to client here rather than in
1087 * serv_connect_callback(). This to avoid null pointer references.
1089 attach_server_conf(client_p
, server_p
);
1092 * at this point we have a connection in progress and C/N lines
1093 * attached to the client, the socket info should be saved in the
1094 * client and it should either be resolved or have a valid address.
1096 * The socket has been connected or connect is in progress.
1098 make_server(client_p
);
1099 if(by
&& IsPerson(by
))
1101 strcpy(client_p
->serv
->by
, by
->name
);
1102 if(client_p
->serv
->user
)
1103 free_user(client_p
->serv
->user
, NULL
);
1104 client_p
->serv
->user
= by
->user
;
1109 strcpy(client_p
->serv
->by
, "AutoConn.");
1110 if(client_p
->serv
->user
)
1111 free_user(client_p
->serv
->user
, NULL
);
1112 client_p
->serv
->user
= NULL
;
1114 SetConnecting(client_p
);
1115 rb_dlinkAddTail(client_p
, &client_p
->node
, &global_client_list
);
1117 if (rb_inet_pton_sock(server_p
->host
, (struct sockaddr
*)&theiripnum
) > 0)
1119 memcpy(&client_p
->localClient
->ip
, &theiripnum
, sizeof(client_p
->localClient
->ip
));
1121 if(theiripnum
.ss_family
== AF_INET6
)
1122 ((struct sockaddr_in6
*)&client_p
->localClient
->ip
)->sin6_port
= htons(server_p
->port
);
1125 ((struct sockaddr_in
*)&client_p
->localClient
->ip
)->sin_port
= htons(server_p
->port
);
1127 return serv_connect_resolved(client_p
);
1132 if(theiripnum
.ss_family
== AF_INET6
)
1133 ((struct sockaddr_in6
*)&client_p
->localClient
->ip
)->sin6_port
= htons(server_p
->port
);
1136 ((struct sockaddr_in
*)&client_p
->localClient
->ip
)->sin_port
= htons(server_p
->port
);
1138 client_p
->localClient
->dnsquery
= rb_malloc(sizeof(struct DNSQuery
));
1139 client_p
->localClient
->dnsquery
->ptr
= client_p
;
1140 client_p
->localClient
->dnsquery
->callback
= serv_connect_dns_callback
;
1141 gethost_byname_type(server_p
->host
, client_p
->localClient
->dnsquery
,
1143 server_p
->aftype
== AF_INET6
? T_AAAA
:
1151 serv_connect_ssl_callback(rb_fde_t
*F
, int status
, void *data
)
1153 struct Client
*client_p
= data
;
1155 rb_connect_sockaddr(F
, (struct sockaddr
*)&client_p
->localClient
->ip
, sizeof(client_p
->localClient
->ip
));
1158 /* Print error message, just like non-SSL. */
1159 serv_connect_callback(F
, status
, data
);
1162 if(rb_socketpair(AF_UNIX
, SOCK_STREAM
, 0, &xF
[0], &xF
[1], "Outgoing ssld connection") == -1)
1164 ilog_error("rb_socketpair failed for server");
1165 serv_connect_callback(F
, RB_ERROR
, data
);
1169 del_from_cli_fd_hash(client_p
);
1170 client_p
->localClient
->F
= xF
[0];
1171 add_to_cli_fd_hash(client_p
);
1173 client_p
->localClient
->ssl_ctl
= start_ssld_connect(F
, xF
[1], rb_get_fd(xF
[0]));
1175 serv_connect_callback(client_p
->localClient
->F
, RB_OK
, client_p
);
1179 * serv_connect_callback() - complete a server connection.
1181 * This routine is called after the server connection attempt has
1182 * completed. If unsucessful, an error is sent to ops and the client
1183 * is closed. If sucessful, it goes through the initialisation/check
1184 * procedures, the capabilities are sent, and the socket is then
1185 * marked for reading.
1188 serv_connect_callback(rb_fde_t
*F
, int status
, void *data
)
1190 struct Client
*client_p
= data
;
1191 struct server_conf
*server_p
;
1194 /* First, make sure its a real client! */
1195 s_assert(client_p
!= NULL
);
1196 s_assert(client_p
->localClient
->F
== F
);
1198 if(client_p
== NULL
)
1201 /* while we were waiting for the callback, its possible this already
1204 if(find_server(NULL
, client_p
->name
) != NULL
)
1206 exit_client(client_p
, client_p
, &me
, "Server Exists");
1210 if(client_p
->localClient
->ssl_ctl
== NULL
)
1211 rb_connect_sockaddr(F
, (struct sockaddr
*)&client_p
->localClient
->ip
, sizeof(client_p
->localClient
->ip
));
1213 /* Check the status */
1216 /* COMM_ERR_TIMEOUT wont have an errno associated with it,
1217 * the others will.. --fl
1219 if(status
== RB_ERR_TIMEOUT
)
1221 sendto_realops_snomask(SNO_GENERAL
, is_remote_connect(client_p
) ? L_NETWIDE
: L_ALL
,
1222 "Error connecting to %s[%s]: %s",
1226 ilog(L_SERVER
, "Error connecting to %s[%s]: %s",
1227 client_p
->name
, client_p
->sockhost
,
1232 errstr
= strerror(rb_get_sockerr(F
));
1233 sendto_realops_snomask(SNO_GENERAL
, is_remote_connect(client_p
) ? L_NETWIDE
: L_ALL
,
1234 "Error connecting to %s[%s]: %s (%s)",
1237 rb_errstr(status
), errstr
);
1238 ilog(L_SERVER
, "Error connecting to %s[%s]: %s (%s)",
1239 client_p
->name
, client_p
->sockhost
,
1240 rb_errstr(status
), errstr
);
1243 exit_client(client_p
, client_p
, &me
, rb_errstr(status
));
1247 /* COMM_OK, so continue the connection procedure */
1248 /* Get the C/N lines */
1249 if((server_p
= client_p
->localClient
->att_sconf
) == NULL
)
1251 sendto_realops_snomask(SNO_GENERAL
, is_remote_connect(client_p
) ? L_NETWIDE
: L_ALL
, "Lost connect{} block for %s",
1253 exit_client(client_p
, client_p
, &me
, "Lost connect{} block");
1257 /* Next, send the initial handshake */
1258 SetHandshake(client_p
);
1260 if(!EmptyString(server_p
->spasswd
))
1262 sendto_one(client_p
, "PASS %s TS %d :%s",
1263 server_p
->spasswd
, TS_CURRENT
, me
.id
);
1266 /* pass my info to the new server */
1267 send_capabilities(client_p
, default_server_capabs
1268 | (ServerConfCompressed(server_p
) ? CAP_ZIP_SUPPORTED
: 0)
1269 | (ServerConfTb(server_p
) ? CAP_TB
: 0));
1271 sendto_one(client_p
, "SERVER %s 1 :%s%s",
1273 ConfigServerHide
.hidden
? "(H) " : "", me
.info
);
1276 * If we've been marked dead because a send failed, just exit
1277 * here now and save everyone the trouble of us ever existing.
1279 if(IsAnyDead(client_p
))
1281 sendto_realops_snomask(SNO_GENERAL
, is_remote_connect(client_p
) ? L_NETWIDE
: L_ALL
,
1282 "%s went dead during handshake", client_p
->name
);
1283 exit_client(client_p
, client_p
, &me
, "Went dead during handshake");
1287 /* don't move to serv_list yet -- we haven't sent a burst! */
1289 /* If we get here, we're ok, so lets start reading some data */
1290 read_packet(F
, client_p
);