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(!EmptyString(target_p
->certfp
))
510 sendto_one(client_p
, ":%s ENCAP * CERTFP :%s",
511 use_id(target_p
), target_p
->certfp
);
513 if(!IsCapable(client_p
, CAP_EUID
))
515 if(IsDynSpoof(target_p
))
516 sendto_one(client_p
, ":%s ENCAP * REALHOST %s",
517 use_id(target_p
), target_p
->orighost
);
518 if(!EmptyString(target_p
->user
->suser
))
519 sendto_one(client_p
, ":%s ENCAP * LOGIN %s",
520 use_id(target_p
), target_p
->user
->suser
);
523 if(ConfigFileEntry
.burst_away
&& !EmptyString(target_p
->user
->away
))
524 sendto_one(client_p
, ":%s AWAY :%s",
526 target_p
->user
->away
);
528 hclientinfo
.target
= target_p
;
529 call_hook(h_burst_client
, &hclientinfo
);
532 RB_DLINK_FOREACH(ptr
, global_channel_list
.head
)
536 if(*chptr
->chname
!= '#')
539 cur_len
= mlen
= rb_sprintf(buf
, ":%s SJOIN %ld %s %s :", me
.id
,
540 (long) chptr
->channelts
, chptr
->chname
,
541 channel_modes(chptr
, client_p
));
545 RB_DLINK_FOREACH(uptr
, chptr
->members
.head
)
549 tlen
= strlen(use_id(msptr
->client_p
)) + 1;
559 if(cur_len
+ tlen
>= BUFSIZE
- 3)
562 sendto_one(client_p
, "%s", buf
);
567 rb_sprintf(t
, "%s%s ", find_channel_status(msptr
, 1),
568 use_id(msptr
->client_p
));
574 if (rb_dlink_list_length(&chptr
->members
) > 0)
576 /* remove trailing space */
579 sendto_one(client_p
, "%s", buf
);
581 if(rb_dlink_list_length(&chptr
->banlist
) > 0)
582 burst_modes_TS6(client_p
, chptr
, &chptr
->banlist
, 'b');
584 if(IsCapable(client_p
, CAP_EX
) &&
585 rb_dlink_list_length(&chptr
->exceptlist
) > 0)
586 burst_modes_TS6(client_p
, chptr
, &chptr
->exceptlist
, 'e');
588 if(IsCapable(client_p
, CAP_IE
) &&
589 rb_dlink_list_length(&chptr
->invexlist
) > 0)
590 burst_modes_TS6(client_p
, chptr
, &chptr
->invexlist
, 'I');
592 if(rb_dlink_list_length(&chptr
->quietlist
) > 0)
593 burst_modes_TS6(client_p
, chptr
, &chptr
->quietlist
, 'q');
595 if(IsCapable(client_p
, CAP_TB
) && chptr
->topic
!= NULL
)
596 sendto_one(client_p
, ":%s TB %s %ld %s%s:%s",
597 me
.id
, chptr
->chname
, (long) chptr
->topic_time
,
598 ConfigChannel
.burst_topicwho
? chptr
->topic_info
: "",
599 ConfigChannel
.burst_topicwho
? " " : "",
602 hchaninfo
.chptr
= chptr
;
603 call_hook(h_burst_channel
, &hchaninfo
);
606 hclientinfo
.target
= NULL
;
607 call_hook(h_burst_finished
, &hclientinfo
);
611 * show_capabilities - show current server capabilities
613 * inputs - pointer to an struct Client
614 * output - pointer to static string
615 * side effects - build up string representing capabilities of server listed
618 show_capabilities(struct Client
*target_p
)
620 static char msgbuf
[BUFSIZE
];
621 struct Capability
*cap
;
624 rb_strlcpy(msgbuf
, " TS6", sizeof(msgbuf
));
627 rb_strlcat(msgbuf
, " SSL", sizeof(msgbuf
));
629 if(!IsServer(target_p
) || !target_p
->serv
->caps
) /* short circuit if no caps */
632 for (cap
= captab
; cap
->cap
; ++cap
)
634 if(cap
->cap
& target_p
->serv
->caps
)
635 rb_snprintf_append(msgbuf
, sizeof(msgbuf
), " %s", cap
->name
);
644 * inputs - pointer to a struct Client
649 server_estab(struct Client
*client_p
)
651 struct Client
*target_p
;
652 struct server_conf
*server_p
;
653 hook_data_client hdata
;
656 char note
[HOSTLEN
+ 15];
658 s_assert(NULL
!= client_p
);
662 host
= client_p
->name
;
664 if((server_p
= client_p
->localClient
->att_sconf
) == NULL
)
666 /* This shouldn't happen, better tell the ops... -A1kmm */
667 sendto_realops_snomask(SNO_GENERAL
, is_remote_connect(client_p
) ? L_NETWIDE
: L_ALL
,
668 "Warning: Lost connect{} block for server %s!", host
);
669 return exit_client(client_p
, client_p
, client_p
, "Lost connect{} block!");
672 /* We shouldn't have to check this, it should already done before
673 * server_estab is called. -A1kmm
675 if(client_p
->localClient
->passwd
)
677 memset(client_p
->localClient
->passwd
, 0, strlen(client_p
->localClient
->passwd
));
678 rb_free(client_p
->localClient
->passwd
);
679 client_p
->localClient
->passwd
= NULL
;
682 /* Its got identd , since its a server */
685 /* If there is something in the serv_list, it might be this
686 * connecting server..
688 if(!ServerInfo
.hub
&& serv_list
.head
)
690 if(client_p
!= serv_list
.head
->data
|| serv_list
.head
->next
)
692 ServerStats
.is_ref
++;
693 sendto_one(client_p
, "ERROR :I'm a leaf not a hub");
694 return exit_client(client_p
, client_p
, client_p
, "I'm a leaf");
698 if(IsUnknown(client_p
))
701 * jdc -- 1. Use EmptyString(), not [0] index reference.
702 * 2. Check ->spasswd, not ->passwd.
704 if(!EmptyString(server_p
->spasswd
))
706 sendto_one(client_p
, "PASS %s TS %d :%s",
707 server_p
->spasswd
, TS_CURRENT
, me
.id
);
710 /* pass info to new server */
711 send_capabilities(client_p
, default_server_capabs
712 | (ServerConfCompressed(server_p
) ? CAP_ZIP_SUPPORTED
: 0)
713 | (ServerConfTb(server_p
) ? CAP_TB
: 0));
715 sendto_one(client_p
, "SERVER %s 1 :%s%s",
717 ConfigServerHide
.hidden
? "(H) " : "",
718 (me
.info
[0]) ? (me
.info
) : "IRCers United");
721 if(!rb_set_buffers(client_p
->localClient
->F
, READBUF_SIZE
))
722 ilog_error("rb_set_buffers failed for server");
724 /* Enable compression now */
725 if(IsCapable(client_p
, CAP_ZIP
))
727 start_zlib_session(client_p
);
729 sendto_one(client_p
, "SVINFO %d %d 0 :%ld", TS_CURRENT
, TS_MIN
, (long int)rb_current_time());
731 client_p
->servptr
= &me
;
733 if(IsAnyDead(client_p
))
734 return CLIENT_EXITED
;
738 /* Update the capability combination usage counts */
739 set_chcap_usage_counts(client_p
);
741 rb_dlinkAdd(client_p
, &client_p
->lnode
, &me
.serv
->servers
);
742 rb_dlinkMoveNode(&client_p
->localClient
->tnode
, &unknown_list
, &serv_list
);
743 rb_dlinkAddTailAlloc(client_p
, &global_serv_list
);
746 add_to_id_hash(client_p
->id
, client_p
);
748 add_to_client_hash(client_p
->name
, client_p
);
749 /* doesnt duplicate client_p->serv if allocated this struct already */
750 make_server(client_p
);
752 client_p
->serv
->caps
= client_p
->localClient
->caps
;
754 if(client_p
->localClient
->fullcaps
)
756 client_p
->serv
->fullcaps
= rb_strdup(client_p
->localClient
->fullcaps
);
757 rb_free(client_p
->localClient
->fullcaps
);
758 client_p
->localClient
->fullcaps
= NULL
;
761 client_p
->serv
->nameinfo
= scache_connect(client_p
->name
, client_p
->info
, IsHidden(client_p
));
762 client_p
->localClient
->firsttime
= rb_current_time();
763 /* fixing eob timings.. -gnp */
765 if((rb_dlink_list_length(&lclient_list
) + rb_dlink_list_length(&serv_list
)) >
766 (unsigned long)MaxConnectionCount
)
767 MaxConnectionCount
= rb_dlink_list_length(&lclient_list
) +
768 rb_dlink_list_length(&serv_list
);
770 /* Show the real host/IP to admins */
771 sendto_realops_snomask(SNO_GENERAL
, L_ALL
,
772 "Link with %s established: (%s) link",
774 show_capabilities(client_p
));
776 ilog(L_SERVER
, "Link with %s established: (%s) link",
777 log_client_name(client_p
, SHOW_IP
), show_capabilities(client_p
));
780 hdata
.target
= client_p
;
781 call_hook(h_server_introduced
, &hdata
);
783 rb_snprintf(note
, sizeof(note
), "Server: %s", client_p
->name
);
784 rb_note(client_p
->localClient
->F
, note
);
787 ** Old sendto_serv_but_one() call removed because we now
788 ** need to send different names to different servers
789 ** (domain name matching) Send new server to other servers.
791 RB_DLINK_FOREACH(ptr
, serv_list
.head
)
793 target_p
= ptr
->data
;
795 if(target_p
== client_p
)
798 if(has_id(target_p
) && has_id(client_p
))
800 sendto_one(target_p
, ":%s SID %s 2 %s :%s%s",
801 me
.id
, client_p
->name
, client_p
->id
,
802 IsHidden(client_p
) ? "(H) " : "", client_p
->info
);
804 if(IsCapable(target_p
, CAP_ENCAP
) &&
805 !EmptyString(client_p
->serv
->fullcaps
))
806 sendto_one(target_p
, ":%s ENCAP * GCAP :%s",
807 client_p
->id
, client_p
->serv
->fullcaps
);
811 sendto_one(target_p
, ":%s SERVER %s 2 :%s%s",
812 me
.name
, client_p
->name
,
813 IsHidden(client_p
) ? "(H) " : "", client_p
->info
);
815 if(IsCapable(target_p
, CAP_ENCAP
) &&
816 !EmptyString(client_p
->serv
->fullcaps
))
817 sendto_one(target_p
, ":%s ENCAP * GCAP :%s",
818 client_p
->name
, client_p
->serv
->fullcaps
);
823 ** Pass on my client information to the new server
825 ** First, pass only servers (idea is that if the link gets
826 ** cancelled beacause the server was already there,
827 ** there are no NICK's to be cancelled...). Of course,
828 ** if cancellation occurs, all this info is sent anyway,
829 ** and I guess the link dies when a read is attempted...? --msa
831 ** Note: Link cancellation to occur at this point means
832 ** that at least two servers from my fragment are building
833 ** up connection this other fragment at the same time, it's
834 ** a race condition, not the normal way of operation...
836 ** ALSO NOTE: using the get_client_name for server names--
837 ** see previous *WARNING*!!! (Also, original inpath
840 RB_DLINK_FOREACH(ptr
, global_serv_list
.head
)
842 target_p
= ptr
->data
;
844 /* target_p->from == target_p for target_p == client_p */
845 if(IsMe(target_p
) || target_p
->from
== client_p
)
848 /* presumption, if target has an id, so does its uplink */
849 if(has_id(client_p
) && has_id(target_p
))
850 sendto_one(client_p
, ":%s SID %s %d %s :%s%s",
851 target_p
->servptr
->id
, target_p
->name
,
852 target_p
->hopcount
+ 1, target_p
->id
,
853 IsHidden(target_p
) ? "(H) " : "", target_p
->info
);
855 sendto_one(client_p
, ":%s SERVER %s %d :%s%s",
856 target_p
->servptr
->name
,
857 target_p
->name
, target_p
->hopcount
+ 1,
858 IsHidden(target_p
) ? "(H) " : "", target_p
->info
);
860 if(IsCapable(client_p
, CAP_ENCAP
) &&
861 !EmptyString(target_p
->serv
->fullcaps
))
862 sendto_one(client_p
, ":%s ENCAP * GCAP :%s",
863 get_id(target_p
, client_p
),
864 target_p
->serv
->fullcaps
);
869 /* Always send a PING after connect burst is done */
870 sendto_one(client_p
, "PING :%s", get_id(&me
, client_p
));
872 free_pre_client(client_p
);
874 send_pop_queue(client_p
);
880 * New server connection code
881 * Based upon the stuff floating about in s_bsd.c
886 serv_connect_resolved(struct Client
*client_p
)
888 struct rb_sockaddr_storage myipnum
;
889 char vhoststr
[HOSTIPLEN
];
890 struct server_conf
*server_p
;
893 if((server_p
= client_p
->localClient
->att_sconf
) == NULL
)
895 sendto_realops_snomask(SNO_GENERAL
, is_remote_connect(client_p
) ? L_NETWIDE
: L_ALL
, "Lost connect{} block for %s",
897 exit_client(client_p
, client_p
, &me
, "Lost connect{} block");
902 if(client_p
->localClient
->ip
.ss_family
== AF_INET6
)
903 port
= ntohs(((struct sockaddr_in6
*)&client_p
->localClient
->ip
)->sin6_port
);
906 port
= ntohs(((struct sockaddr_in
*)&client_p
->localClient
->ip
)->sin_port
);
908 if(ServerConfVhosted(server_p
))
910 memcpy(&myipnum
, &server_p
->my_ipnum
, sizeof(myipnum
));
911 ((struct sockaddr_in
*)&myipnum
)->sin_port
= 0;
912 myipnum
.ss_family
= server_p
->aftype
;
915 else if(server_p
->aftype
== AF_INET
&& ServerInfo
.specific_ipv4_vhost
)
917 memcpy(&myipnum
, &ServerInfo
.ip
, sizeof(myipnum
));
918 ((struct sockaddr_in
*)&myipnum
)->sin_port
= 0;
919 myipnum
.ss_family
= AF_INET
;
920 SET_SS_LEN(&myipnum
, sizeof(struct sockaddr_in
));
924 else if((server_p
->aftype
== AF_INET6
) && ServerInfo
.specific_ipv6_vhost
)
926 memcpy(&myipnum
, &ServerInfo
.ip6
, sizeof(myipnum
));
927 ((struct sockaddr_in6
*)&myipnum
)->sin6_port
= 0;
928 myipnum
.ss_family
= AF_INET6
;
929 SET_SS_LEN(&myipnum
, sizeof(struct sockaddr_in6
));
935 ilog(L_SERVER
, "Connecting to %s[%s] port %d (%s)", client_p
->name
, client_p
->sockhost
, port
,
937 server_p
->aftype
== AF_INET6
? "IPv6" :
939 (server_p
->aftype
== AF_INET
? "IPv4" : "?"));
941 if(ServerConfSSL(server_p
))
943 rb_connect_tcp(client_p
->localClient
->F
, (struct sockaddr
*)&client_p
->localClient
->ip
,
944 NULL
, 0, serv_connect_ssl_callback
,
945 client_p
, ConfigFileEntry
.connect_timeout
);
948 rb_connect_tcp(client_p
->localClient
->F
, (struct sockaddr
*)&client_p
->localClient
->ip
,
949 NULL
, 0, serv_connect_callback
,
950 client_p
, ConfigFileEntry
.connect_timeout
);
955 rb_inet_ntop_sock((struct sockaddr
*)&myipnum
, vhoststr
, sizeof vhoststr
);
956 ilog(L_SERVER
, "Connecting to %s[%s] port %d (%s) (vhost %s)", client_p
->name
, client_p
->sockhost
, port
,
958 server_p
->aftype
== AF_INET6
? "IPv6" :
960 (server_p
->aftype
== AF_INET
? "IPv4" : "?"), vhoststr
);
963 if(ServerConfSSL(server_p
))
964 rb_connect_tcp(client_p
->localClient
->F
, (struct sockaddr
*)&client_p
->localClient
->ip
,
965 (struct sockaddr
*) &myipnum
,
966 GET_SS_LEN(&myipnum
), serv_connect_ssl_callback
, client_p
,
967 ConfigFileEntry
.connect_timeout
);
969 rb_connect_tcp(client_p
->localClient
->F
, (struct sockaddr
*)&client_p
->localClient
->ip
,
970 (struct sockaddr
*) &myipnum
,
971 GET_SS_LEN(&myipnum
), serv_connect_callback
, client_p
,
972 ConfigFileEntry
.connect_timeout
);
978 serv_connect_dns_callback(void *vptr
, struct DNSReply
*reply
)
980 struct Client
*client_p
= vptr
;
983 rb_free(client_p
->localClient
->dnsquery
);
984 client_p
->localClient
->dnsquery
= NULL
;
988 sendto_realops_snomask(SNO_GENERAL
, is_remote_connect(client_p
) ? L_NETWIDE
: L_ALL
, "Cannot resolve hostname for %s",
990 ilog(L_SERVER
, "Cannot resolve hostname for %s",
991 log_client_name(client_p
, HIDE_IP
));
992 exit_client(client_p
, client_p
, &me
, "Cannot resolve hostname");
996 if(reply
->addr
.ss_family
== AF_INET6
)
997 port
= ((struct sockaddr_in6
*)&client_p
->localClient
->ip
)->sin6_port
;
1000 port
= ((struct sockaddr_in
*)&client_p
->localClient
->ip
)->sin_port
;
1001 memcpy(&client_p
->localClient
->ip
, &reply
->addr
, sizeof(client_p
->localClient
->ip
));
1003 if(reply
->addr
.ss_family
== AF_INET6
)
1004 ((struct sockaddr_in6
*)&client_p
->localClient
->ip
)->sin6_port
= port
;
1007 ((struct sockaddr_in
*)&client_p
->localClient
->ip
)->sin_port
= port
;
1008 /* Set sockhost properly now -- jilles */
1009 rb_inet_ntop_sock((struct sockaddr
*)&client_p
->localClient
->ip
,
1010 client_p
->sockhost
, sizeof client_p
->sockhost
);
1011 serv_connect_resolved(client_p
);
1015 * serv_connect() - initiate a server connection
1017 * inputs - pointer to conf
1018 * - pointer to client doing the connet
1022 * This code initiates a connection to a server. It first checks to make
1023 * sure the given server exists. If this is the case, it creates a socket,
1024 * creates a client, saves the socket information in the client, and
1025 * initiates a connection to the server through rb_connect_tcp(). The
1026 * completion of this goes through serv_completed_connection().
1028 * We return 1 if the connection is attempted, since we don't know whether
1029 * it suceeded or not, and 0 if it fails in here somewhere.
1032 serv_connect(struct server_conf
*server_p
, struct Client
*by
)
1034 struct Client
*client_p
;
1035 struct rb_sockaddr_storage theiripnum
;
1037 char note
[HOSTLEN
+ 10];
1039 s_assert(server_p
!= NULL
);
1040 if(server_p
== NULL
)
1044 * Make sure this server isn't already connected
1046 if((client_p
= find_server(NULL
, server_p
->name
)))
1048 sendto_realops_snomask(SNO_GENERAL
, L_ALL
,
1049 "Server %s already present from %s",
1050 server_p
->name
, client_p
->name
);
1051 if(by
&& IsPerson(by
) && !MyClient(by
))
1052 sendto_one_notice(by
, ":Server %s already present from %s",
1053 server_p
->name
, client_p
->name
);
1057 /* create a socket for the server connection */
1058 if((F
= rb_socket(server_p
->aftype
, SOCK_STREAM
, 0, NULL
)) == NULL
)
1060 ilog_error("opening a stream socket");
1064 rb_snprintf(note
, sizeof note
, "Server: %s", server_p
->name
);
1067 /* Create a local client */
1068 client_p
= make_client(NULL
);
1070 /* Copy in the server, hostname, fd
1071 * The sockhost may be a hostname, this will be corrected later
1074 rb_strlcpy(client_p
->name
, server_p
->name
, sizeof(client_p
->name
));
1075 rb_strlcpy(client_p
->host
, server_p
->host
, sizeof(client_p
->host
));
1076 rb_strlcpy(client_p
->sockhost
, server_p
->host
, sizeof(client_p
->sockhost
));
1077 client_p
->localClient
->F
= F
;
1078 add_to_cli_fd_hash(client_p
);
1081 * Set up the initial server evilness, ripped straight from
1082 * connect_server(), so don't blame me for it being evil.
1086 if(!rb_set_buffers(client_p
->localClient
->F
, READBUF_SIZE
))
1088 ilog_error("setting the buffer size for a server connection");
1092 * Attach config entries to client here rather than in
1093 * serv_connect_callback(). This to avoid null pointer references.
1095 attach_server_conf(client_p
, server_p
);
1098 * at this point we have a connection in progress and C/N lines
1099 * attached to the client, the socket info should be saved in the
1100 * client and it should either be resolved or have a valid address.
1102 * The socket has been connected or connect is in progress.
1104 make_server(client_p
);
1105 if(by
&& IsPerson(by
))
1107 strcpy(client_p
->serv
->by
, by
->name
);
1108 if(client_p
->serv
->user
)
1109 free_user(client_p
->serv
->user
, NULL
);
1110 client_p
->serv
->user
= by
->user
;
1115 strcpy(client_p
->serv
->by
, "AutoConn.");
1116 if(client_p
->serv
->user
)
1117 free_user(client_p
->serv
->user
, NULL
);
1118 client_p
->serv
->user
= NULL
;
1120 SetConnecting(client_p
);
1121 rb_dlinkAddTail(client_p
, &client_p
->node
, &global_client_list
);
1123 if (rb_inet_pton_sock(server_p
->host
, (struct sockaddr
*)&theiripnum
) > 0)
1125 memcpy(&client_p
->localClient
->ip
, &theiripnum
, sizeof(client_p
->localClient
->ip
));
1127 if(theiripnum
.ss_family
== AF_INET6
)
1128 ((struct sockaddr_in6
*)&client_p
->localClient
->ip
)->sin6_port
= htons(server_p
->port
);
1131 ((struct sockaddr_in
*)&client_p
->localClient
->ip
)->sin_port
= htons(server_p
->port
);
1133 return serv_connect_resolved(client_p
);
1138 if(theiripnum
.ss_family
== AF_INET6
)
1139 ((struct sockaddr_in6
*)&client_p
->localClient
->ip
)->sin6_port
= htons(server_p
->port
);
1142 ((struct sockaddr_in
*)&client_p
->localClient
->ip
)->sin_port
= htons(server_p
->port
);
1144 client_p
->localClient
->dnsquery
= rb_malloc(sizeof(struct DNSQuery
));
1145 client_p
->localClient
->dnsquery
->ptr
= client_p
;
1146 client_p
->localClient
->dnsquery
->callback
= serv_connect_dns_callback
;
1147 gethost_byname_type(server_p
->host
, client_p
->localClient
->dnsquery
,
1149 server_p
->aftype
== AF_INET6
? T_AAAA
:
1157 serv_connect_ssl_callback(rb_fde_t
*F
, int status
, void *data
)
1159 struct Client
*client_p
= data
;
1161 rb_connect_sockaddr(F
, (struct sockaddr
*)&client_p
->localClient
->ip
, sizeof(client_p
->localClient
->ip
));
1164 /* Print error message, just like non-SSL. */
1165 serv_connect_callback(F
, status
, data
);
1168 if(rb_socketpair(AF_UNIX
, SOCK_STREAM
, 0, &xF
[0], &xF
[1], "Outgoing ssld connection") == -1)
1170 ilog_error("rb_socketpair failed for server");
1171 serv_connect_callback(F
, RB_ERROR
, data
);
1175 del_from_cli_fd_hash(client_p
);
1176 client_p
->localClient
->F
= xF
[0];
1177 add_to_cli_fd_hash(client_p
);
1179 client_p
->localClient
->ssl_ctl
= start_ssld_connect(F
, xF
[1], rb_get_fd(xF
[0]));
1181 serv_connect_callback(client_p
->localClient
->F
, RB_OK
, client_p
);
1185 * serv_connect_callback() - complete a server connection.
1187 * This routine is called after the server connection attempt has
1188 * completed. If unsucessful, an error is sent to ops and the client
1189 * is closed. If sucessful, it goes through the initialisation/check
1190 * procedures, the capabilities are sent, and the socket is then
1191 * marked for reading.
1194 serv_connect_callback(rb_fde_t
*F
, int status
, void *data
)
1196 struct Client
*client_p
= data
;
1197 struct server_conf
*server_p
;
1200 /* First, make sure its a real client! */
1201 s_assert(client_p
!= NULL
);
1202 s_assert(client_p
->localClient
->F
== F
);
1204 if(client_p
== NULL
)
1207 /* while we were waiting for the callback, its possible this already
1210 if(find_server(NULL
, client_p
->name
) != NULL
)
1212 exit_client(client_p
, client_p
, &me
, "Server Exists");
1216 if(client_p
->localClient
->ssl_ctl
== NULL
)
1217 rb_connect_sockaddr(F
, (struct sockaddr
*)&client_p
->localClient
->ip
, sizeof(client_p
->localClient
->ip
));
1219 /* Check the status */
1222 /* COMM_ERR_TIMEOUT wont have an errno associated with it,
1223 * the others will.. --fl
1225 if(status
== RB_ERR_TIMEOUT
)
1227 sendto_realops_snomask(SNO_GENERAL
, is_remote_connect(client_p
) ? L_NETWIDE
: L_ALL
,
1228 "Error connecting to %s[%s]: %s",
1232 ilog(L_SERVER
, "Error connecting to %s[%s]: %s",
1233 client_p
->name
, client_p
->sockhost
,
1238 errstr
= strerror(rb_get_sockerr(F
));
1239 sendto_realops_snomask(SNO_GENERAL
, is_remote_connect(client_p
) ? L_NETWIDE
: L_ALL
,
1240 "Error connecting to %s[%s]: %s (%s)",
1243 rb_errstr(status
), errstr
);
1244 ilog(L_SERVER
, "Error connecting to %s[%s]: %s (%s)",
1245 client_p
->name
, client_p
->sockhost
,
1246 rb_errstr(status
), errstr
);
1249 exit_client(client_p
, client_p
, &me
, rb_errstr(status
));
1253 /* COMM_OK, so continue the connection procedure */
1254 /* Get the C/N lines */
1255 if((server_p
= client_p
->localClient
->att_sconf
) == NULL
)
1257 sendto_realops_snomask(SNO_GENERAL
, is_remote_connect(client_p
) ? L_NETWIDE
: L_ALL
, "Lost connect{} block for %s",
1259 exit_client(client_p
, client_p
, &me
, "Lost connect{} block");
1263 /* Next, send the initial handshake */
1264 SetHandshake(client_p
);
1266 if(!EmptyString(server_p
->spasswd
))
1268 sendto_one(client_p
, "PASS %s TS %d :%s",
1269 server_p
->spasswd
, TS_CURRENT
, me
.id
);
1272 /* pass my info to the new server */
1273 send_capabilities(client_p
, default_server_capabs
1274 | (ServerConfCompressed(server_p
) ? CAP_ZIP_SUPPORTED
: 0)
1275 | (ServerConfTb(server_p
) ? CAP_TB
: 0));
1277 sendto_one(client_p
, "SERVER %s 1 :%s%s",
1279 ConfigServerHide
.hidden
? "(H) " : "", me
.info
);
1282 * If we've been marked dead because a send failed, just exit
1283 * here now and save everyone the trouble of us ever existing.
1285 if(IsAnyDead(client_p
))
1287 sendto_realops_snomask(SNO_GENERAL
, is_remote_connect(client_p
) ? L_NETWIDE
: L_ALL
,
1288 "%s went dead during handshake", client_p
->name
);
1289 exit_client(client_p
, client_p
, &me
, "Went dead during handshake");
1293 /* don't move to serv_list yet -- we haven't sent a burst! */
1295 /* If we get here, we're ok, so lets start reading some data */
1296 read_packet(F
, client_p
);