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... */
61 #define INADDR_NONE ((unsigned int) 0xffffffff)
64 #ifndef HAVE_SOCKETPAIR
65 static int inet_socketpair(int d
, int type
, int protocol
, int sv
[2]);
68 int MaxConnectionCount
= 1;
69 int MaxClientCount
= 1;
70 int refresh_user_links
= 0;
72 static char buf
[BUFSIZE
];
75 * list of recognized server capabilities. "TS" is not on the list
76 * because all servers that we talk to already do TS, and the kludged
77 * extra argument to "PASS" takes care of checking that. -orabidoo
79 struct Capability captab
[] = {
86 { "KNOCK", CAP_KNOCK
},
89 { "UNKLN", CAP_UNKLN
},
90 { "CLUSTER", CAP_CLUSTER
},
91 { "ENCAP", CAP_ENCAP
},
92 { "SERVICES", CAP_SERVICE
},
93 { "RSFNC", CAP_RSFNC
},
99 static CNCB serv_connect_callback
;
100 static CNCB serv_connect_ssl_callback
;
103 * hunt_server - Do the basic thing in delivering the message (command)
104 * across the relays to the specific server (server) for
107 * Note: The command is a format string and *MUST* be
108 * of prefixed style (e.g. ":%s COMMAND %s ...").
109 * Command can have only max 8 parameters.
111 * server parv[server] is the parameter identifying the
115 * parv[server] is replaced with the pointer to the
116 * real servername from the matched client (I'm lazy
119 * returns: (see #defines)
122 hunt_server(struct Client
*client_p
, struct Client
*source_p
,
123 const char *command
, int server
, int parc
, const char *parv
[])
125 struct Client
*target_p
;
132 * Assume it's me, if no server
134 if(parc
<= server
|| EmptyString(parv
[server
]) ||
135 match(parv
[server
], me
.name
) || (strcmp(parv
[server
], me
.id
) == 0))
136 return (HUNTED_ISME
);
138 new = LOCAL_COPY(parv
[server
]);
141 * These are to pickup matches that would cause the following
142 * message to go in the wrong direction while doing quick fast
143 * non-matching lookups.
145 if(MyClient(source_p
))
146 target_p
= find_named_client(new);
148 target_p
= find_client(new);
151 if(target_p
->from
== source_p
->from
&& !MyConnect(target_p
))
155 wilds
= (strchr(new, '?') || strchr(new, '*'));
158 * Again, if there are no wild cards involved in the server
159 * name, use the hash lookup
165 if(MyClient(source_p
) || !IsDigit(parv
[server
][0]))
166 sendto_one_numeric(source_p
, ERR_NOSUCHSERVER
,
167 form_str(ERR_NOSUCHSERVER
),
169 return (HUNTED_NOSUCH
);
175 RB_DLINK_FOREACH(ptr
, global_client_list
.head
)
177 if(match(new, ((struct Client
*) (ptr
->data
))->name
))
179 target_p
= ptr
->data
;
188 if(!IsRegistered(target_p
))
190 sendto_one_numeric(source_p
, ERR_NOSUCHSERVER
,
191 form_str(ERR_NOSUCHSERVER
),
193 return HUNTED_NOSUCH
;
196 if(IsMe(target_p
) || MyClient(target_p
))
200 parv
[server
] = get_id(target_p
, target_p
);
202 sendto_one(target_p
, command
, get_id(source_p
, target_p
),
203 parv
[1], parv
[2], parv
[3], parv
[4], parv
[5], parv
[6], parv
[7], parv
[8]);
205 return (HUNTED_PASS
);
208 if(MyClient(source_p
) || !IsDigit(parv
[server
][0]))
209 sendto_one_numeric(source_p
, ERR_NOSUCHSERVER
,
210 form_str(ERR_NOSUCHSERVER
), parv
[server
]);
211 return (HUNTED_NOSUCH
);
215 * try_connections - scan through configuration and try new connections.
216 * Returns the calendar time when the next call to this
217 * function should be made latest. (No harm done if this
218 * is called earlier or later...)
221 try_connections(void *unused
)
223 struct Client
*client_p
;
224 struct server_conf
*server_p
= NULL
;
225 struct server_conf
*tmp_p
;
228 int connecting
= FALSE
;
232 RB_DLINK_FOREACH(ptr
, server_conf_list
.head
)
236 if(ServerConfIllegal(tmp_p
) || !ServerConfAutoconn(tmp_p
))
239 /* don't allow ssl connections if ssl isn't setup */
240 if(ServerConfSSL(tmp_p
) && (!ssl_ok
|| !get_ssld_count()))
243 cltmp
= tmp_p
->class;
246 * Skip this entry if the use of it is still on hold until
247 * future. Otherwise handle this entry (and set it on hold
248 * until next time). Will reset only hold times, if already
249 * made one successfull connection... [this algorithm is
250 * a bit fuzzy... -- msa >;) ]
252 if(tmp_p
->hold
> rb_current_time())
254 if(next
> tmp_p
->hold
|| next
== 0)
259 confrq
= get_con_freq(cltmp
);
260 tmp_p
->hold
= rb_current_time() + confrq
;
263 * Found a CONNECT config with port specified, scan clients
264 * and see if this server is already connected?
266 client_p
= find_server(NULL
, tmp_p
->name
);
268 if(!client_p
&& (CurrUsers(cltmp
) < MaxUsers(cltmp
)) && !connecting
)
272 /* We connect only one at time... */
276 if((next
> tmp_p
->hold
) || (next
== 0))
280 /* TODO: change this to set active flag to 0 when added to event! --Habeeb */
281 if(GlobalSetOptions
.autoconn
== 0)
287 /* move this connect entry to end.. */
288 rb_dlinkDelete(&server_p
->node
, &server_conf_list
);
289 rb_dlinkAddTail(server_p
, &server_p
->node
, &server_conf_list
);
292 * We used to only print this if serv_connect() actually
293 * suceeded, but since rb_tcp_connect() can call the callback
294 * immediately if there is an error, we were getting error messages
295 * in the wrong order. SO, we just print out the activated line,
296 * and let serv_connect() / serv_connect_callback() print an
297 * error afterwards if it fails.
300 #ifndef HIDE_SERVERS_IPS
301 sendto_realops_snomask(SNO_GENERAL
, L_ALL
,
302 "Connection to %s[%s] activated.",
303 server_p
->name
, server_p
->host
);
305 sendto_realops_snomask(SNO_GENERAL
, L_ALL
,
306 "Connection to %s activated",
310 serv_connect(server_p
, 0);
314 check_server(const char *name
, struct Client
*client_p
)
316 struct server_conf
*server_p
= NULL
;
317 struct server_conf
*tmp_p
;
321 s_assert(NULL
!= client_p
);
325 if(!(client_p
->localClient
->passwd
))
328 if(strlen(name
) > HOSTLEN
)
331 RB_DLINK_FOREACH(ptr
, server_conf_list
.head
)
335 if(ServerConfIllegal(tmp_p
))
338 if(!match(tmp_p
->name
, name
))
343 /* XXX: Fix me for IPv6 */
344 /* XXX sockhost is the IPv4 ip as a string */
345 if(match(tmp_p
->host
, client_p
->host
) ||
346 match(tmp_p
->host
, client_p
->sockhost
))
350 if(ServerConfEncrypted(tmp_p
))
352 if(!strcmp(tmp_p
->passwd
, crypt(client_p
->localClient
->passwd
,
359 else if(!strcmp(tmp_p
->passwd
, client_p
->localClient
->passwd
))
370 if(ServerConfSSL(server_p
) && client_p
->localClient
->ssl_ctl
== NULL
)
375 attach_server_conf(client_p
, server_p
);
377 /* clear ZIP/TB if they support but we dont want them */
379 if(!ServerConfCompressed(server_p
))
381 ClearCap(client_p
, CAP_ZIP
);
383 if(!ServerConfTb(server_p
))
384 ClearCap(client_p
, CAP_TB
);
392 * inputs - Client pointer to send to
393 * - int flag of capabilities that this server has
395 * side effects - send the CAPAB line to a server -orabidoo
399 send_capabilities(struct Client
*client_p
, int cap_can_send
)
401 struct Capability
*cap
;
402 char msgbuf
[BUFSIZE
];
408 for (cap
= captab
; cap
->name
; ++cap
)
410 if(cap
->cap
& cap_can_send
)
412 tl
= rb_sprintf(t
, "%s ", cap
->name
);
420 sendto_one(client_p
, "CAPAB :%s", msgbuf
);
425 * input - client to burst to, channel name, list to burst, mode flag
427 * side effects - client is sent a list of +b, +e, or +I modes
430 burst_modes_TS6(struct Client
*client_p
, struct Channel
*chptr
,
431 rb_dlink_list
*list
, char flag
)
440 cur_len
= mlen
= rb_sprintf(buf
, ":%s BMASK %ld %s %c :",
441 me
.id
, (long) chptr
->channelts
, chptr
->chname
, flag
);
444 RB_DLINK_FOREACH(ptr
, list
->head
)
448 tlen
= strlen(banptr
->banstr
) + 1;
451 if(cur_len
+ tlen
> BUFSIZE
- 3)
453 /* the one we're trying to send doesnt fit at all! */
460 /* chop off trailing space and send.. */
462 sendto_one(client_p
, "%s", buf
);
467 rb_sprintf(t
, "%s ", banptr
->banstr
);
472 /* cant ever exit the loop above without having modified buf,
473 * chop off trailing space and send.
476 sendto_one(client_p
, "%s", buf
);
482 * inputs - client (server) to send nick towards
483 * - client to send nick for
485 * side effects - NICK message is sent towards given client_p
488 burst_TS6(struct Client
*client_p
)
490 static char ubuf
[12];
491 struct Client
*target_p
;
492 struct Channel
*chptr
;
493 struct membership
*msptr
;
494 hook_data_client hclientinfo
;
495 hook_data_channel hchaninfo
;
502 hclientinfo
.client
= hchaninfo
.client
= client_p
;
504 RB_DLINK_FOREACH(ptr
, global_client_list
.head
)
506 target_p
= ptr
->data
;
508 if(!IsPerson(target_p
))
511 send_umode(NULL
, target_p
, 0, 0, ubuf
);
518 if(has_id(target_p
) && IsCapable(client_p
, CAP_EUID
))
519 sendto_one(client_p
, ":%s EUID %s %d %ld %s %s %s %s %s %s %s :%s",
520 target_p
->servptr
->id
, target_p
->name
,
521 target_p
->hopcount
+ 1,
522 (long) target_p
->tsinfo
, ubuf
,
523 target_p
->username
, target_p
->host
,
524 IsIPSpoof(target_p
) ? "0" : target_p
->sockhost
,
526 IsDynSpoof(target_p
) ? target_p
->orighost
: "*",
527 EmptyString(target_p
->user
->suser
) ? "*" : target_p
->user
->suser
,
529 else if(has_id(target_p
))
530 sendto_one(client_p
, ":%s UID %s %d %ld %s %s %s %s %s :%s",
531 target_p
->servptr
->id
, target_p
->name
,
532 target_p
->hopcount
+ 1,
533 (long) target_p
->tsinfo
, ubuf
,
534 target_p
->username
, target_p
->host
,
535 IsIPSpoof(target_p
) ? "0" : target_p
->sockhost
,
536 target_p
->id
, target_p
->info
);
538 sendto_one(client_p
, "NICK %s %d %ld %s %s %s %s :%s",
540 target_p
->hopcount
+ 1,
541 (long) target_p
->tsinfo
,
543 target_p
->username
, target_p
->host
,
544 target_p
->servptr
->name
, target_p
->info
);
546 if(!has_id(target_p
) || !IsCapable(client_p
, CAP_EUID
))
548 if(IsDynSpoof(target_p
))
549 sendto_one(client_p
, ":%s ENCAP * REALHOST %s",
550 use_id(target_p
), target_p
->orighost
);
551 if(!EmptyString(target_p
->user
->suser
))
552 sendto_one(client_p
, ":%s ENCAP * LOGIN %s",
553 use_id(target_p
), target_p
->user
->suser
);
556 if(ConfigFileEntry
.burst_away
&& !EmptyString(target_p
->user
->away
))
557 sendto_one(client_p
, ":%s AWAY :%s",
559 target_p
->user
->away
);
561 hclientinfo
.target
= target_p
;
562 call_hook(h_burst_client
, &hclientinfo
);
565 RB_DLINK_FOREACH(ptr
, global_channel_list
.head
)
569 if(*chptr
->chname
!= '#')
572 cur_len
= mlen
= rb_sprintf(buf
, ":%s SJOIN %ld %s %s :", me
.id
,
573 (long) chptr
->channelts
, chptr
->chname
,
574 channel_modes(chptr
, client_p
));
578 RB_DLINK_FOREACH(uptr
, chptr
->members
.head
)
582 tlen
= strlen(use_id(msptr
->client_p
)) + 1;
588 if(cur_len
+ tlen
>= BUFSIZE
- 3)
591 sendto_one(client_p
, "%s", buf
);
596 rb_sprintf(t
, "%s%s ", find_channel_status(msptr
, 1),
597 use_id(msptr
->client_p
));
603 if (rb_dlink_list_length(&chptr
->members
) > 0)
605 /* remove trailing space */
608 sendto_one(client_p
, "%s", buf
);
610 if(rb_dlink_list_length(&chptr
->banlist
) > 0)
611 burst_modes_TS6(client_p
, chptr
, &chptr
->banlist
, 'b');
613 if(IsCapable(client_p
, CAP_EX
) &&
614 rb_dlink_list_length(&chptr
->exceptlist
) > 0)
615 burst_modes_TS6(client_p
, chptr
, &chptr
->exceptlist
, 'e');
617 if(IsCapable(client_p
, CAP_IE
) &&
618 rb_dlink_list_length(&chptr
->invexlist
) > 0)
619 burst_modes_TS6(client_p
, chptr
, &chptr
->invexlist
, 'I');
621 if(rb_dlink_list_length(&chptr
->quietlist
) > 0)
622 burst_modes_TS6(client_p
, chptr
, &chptr
->quietlist
, 'q');
624 if(IsCapable(client_p
, CAP_TB
) && chptr
->topic
!= NULL
)
625 sendto_one(client_p
, ":%s TB %s %ld %s%s:%s",
626 me
.id
, chptr
->chname
, (long) chptr
->topic_time
,
627 ConfigChannel
.burst_topicwho
? chptr
->topic_info
: "",
628 ConfigChannel
.burst_topicwho
? " " : "",
631 hchaninfo
.chptr
= chptr
;
632 call_hook(h_burst_channel
, &hchaninfo
);
635 hclientinfo
.target
= NULL
;
636 call_hook(h_burst_finished
, &hclientinfo
);
640 * show_capabilities - show current server capabilities
642 * inputs - pointer to an struct Client
643 * output - pointer to static string
644 * side effects - build up string representing capabilities of server listed
647 show_capabilities(struct Client
*target_p
)
649 static char msgbuf
[BUFSIZE
];
650 struct Capability
*cap
;
653 rb_strlcpy(msgbuf
, " TS6", sizeof(msgbuf
));
656 rb_strlcat(msgbuf
, " SSL", sizeof(msgbuf
));
658 if(!IsServer(target_p
) || !target_p
->serv
->caps
) /* short circuit if no caps */
661 for (cap
= captab
; cap
->cap
; ++cap
)
663 if(cap
->cap
& target_p
->serv
->caps
)
664 rb_snprintf_append(msgbuf
, sizeof(msgbuf
), " %s", cap
->name
);
673 * inputs - pointer to a struct Client
678 server_estab(struct Client
*client_p
)
680 struct Client
*target_p
;
681 struct server_conf
*server_p
;
682 hook_data_client hdata
;
685 char note
[HOSTLEN
+ 15];
687 s_assert(NULL
!= client_p
);
691 host
= client_p
->name
;
693 if((server_p
= client_p
->localClient
->att_sconf
) == NULL
)
695 /* This shouldn't happen, better tell the ops... -A1kmm */
696 sendto_realops_snomask(SNO_GENERAL
, is_remote_connect(client_p
) ? L_NETWIDE
: L_ALL
,
697 "Warning: Lost connect{} block for server %s!", host
);
698 return exit_client(client_p
, client_p
, client_p
, "Lost connect{} block!");
701 /* We shouldn't have to check this, it should already done before
702 * server_estab is called. -A1kmm
704 if(client_p
->localClient
->passwd
)
706 memset(client_p
->localClient
->passwd
, 0, strlen(client_p
->localClient
->passwd
));
707 rb_free(client_p
->localClient
->passwd
);
708 client_p
->localClient
->passwd
= NULL
;
711 /* Its got identd , since its a server */
714 /* If there is something in the serv_list, it might be this
715 * connecting server..
717 if(!ServerInfo
.hub
&& serv_list
.head
)
719 if(client_p
!= serv_list
.head
->data
|| serv_list
.head
->next
)
721 ServerStats
.is_ref
++;
722 sendto_one(client_p
, "ERROR :I'm a leaf not a hub");
723 return exit_client(client_p
, client_p
, client_p
, "I'm a leaf");
727 if(IsUnknown(client_p
))
730 * jdc -- 1. Use EmptyString(), not [0] index reference.
731 * 2. Check ->spasswd, not ->passwd.
733 if(!EmptyString(server_p
->spasswd
))
735 sendto_one(client_p
, "PASS %s TS %d :%s",
736 server_p
->spasswd
, TS_CURRENT
, me
.id
);
739 /* pass info to new server */
740 send_capabilities(client_p
, default_server_capabs
741 | (ServerConfCompressed(server_p
) ? CAP_ZIP_SUPPORTED
: 0)
742 | (ServerConfTb(server_p
) ? CAP_TB
: 0));
744 sendto_one(client_p
, "SERVER %s 1 :%s%s",
746 ConfigServerHide
.hidden
? "(H) " : "",
747 (me
.info
[0]) ? (me
.info
) : "IRCers United");
750 if(!rb_set_buffers(client_p
->localClient
->F
, READBUF_SIZE
))
751 ilog_error("rb_set_buffers failed for server");
753 /* Enable compression now */
754 if(IsCapable(client_p
, CAP_ZIP
))
756 start_zlib_session(client_p
);
758 sendto_one(client_p
, "SVINFO %d %d 0 :%ld", TS_CURRENT
, TS_MIN
, (long int)rb_current_time());
760 client_p
->servptr
= &me
;
762 if(IsAnyDead(client_p
))
763 return CLIENT_EXITED
;
767 /* Update the capability combination usage counts */
768 set_chcap_usage_counts(client_p
);
770 rb_dlinkAdd(client_p
, &client_p
->lnode
, &me
.serv
->servers
);
771 del_unknown_ip(client_p
);
772 rb_dlinkMoveNode(&client_p
->localClient
->tnode
, &unknown_list
, &serv_list
);
773 rb_dlinkAddTailAlloc(client_p
, &global_serv_list
);
776 add_to_id_hash(client_p
->id
, client_p
);
778 add_to_client_hash(client_p
->name
, client_p
);
779 /* doesnt duplicate client_p->serv if allocated this struct already */
780 make_server(client_p
);
782 client_p
->serv
->caps
= client_p
->localClient
->caps
;
784 if(client_p
->localClient
->fullcaps
)
786 client_p
->serv
->fullcaps
= rb_strdup(client_p
->localClient
->fullcaps
);
787 rb_free(client_p
->localClient
->fullcaps
);
788 client_p
->localClient
->fullcaps
= NULL
;
791 client_p
->serv
->nameinfo
= scache_connect(client_p
->name
, client_p
->info
, IsHidden(client_p
));
792 client_p
->localClient
->firsttime
= rb_current_time();
793 /* fixing eob timings.. -gnp */
795 if((rb_dlink_list_length(&lclient_list
) + rb_dlink_list_length(&serv_list
)) >
796 (unsigned long)MaxConnectionCount
)
797 MaxConnectionCount
= rb_dlink_list_length(&lclient_list
) +
798 rb_dlink_list_length(&serv_list
);
800 /* Show the real host/IP to admins */
801 sendto_realops_snomask(SNO_GENERAL
, L_ALL
,
802 "Link with %s established: (%s) link",
803 get_server_name(client_p
, SHOW_IP
),
804 show_capabilities(client_p
));
806 ilog(L_SERVER
, "Link with %s established: (%s) link",
807 log_client_name(client_p
, SHOW_IP
), show_capabilities(client_p
));
810 hdata
.target
= client_p
;
811 call_hook(h_server_introduced
, &hdata
);
813 rb_snprintf(note
, sizeof(note
), "Server: %s", client_p
->name
);
814 rb_note(client_p
->localClient
->F
, note
);
817 ** Old sendto_serv_but_one() call removed because we now
818 ** need to send different names to different servers
819 ** (domain name matching) Send new server to other servers.
821 RB_DLINK_FOREACH(ptr
, serv_list
.head
)
823 target_p
= ptr
->data
;
825 if(target_p
== client_p
)
828 if(has_id(target_p
) && has_id(client_p
))
830 sendto_one(target_p
, ":%s SID %s 2 %s :%s%s",
831 me
.id
, client_p
->name
, client_p
->id
,
832 IsHidden(client_p
) ? "(H) " : "", client_p
->info
);
834 if(IsCapable(target_p
, CAP_ENCAP
) &&
835 !EmptyString(client_p
->serv
->fullcaps
))
836 sendto_one(target_p
, ":%s ENCAP * GCAP :%s",
837 client_p
->id
, client_p
->serv
->fullcaps
);
841 sendto_one(target_p
, ":%s SERVER %s 2 :%s%s",
842 me
.name
, client_p
->name
,
843 IsHidden(client_p
) ? "(H) " : "", client_p
->info
);
845 if(IsCapable(target_p
, CAP_ENCAP
) &&
846 !EmptyString(client_p
->serv
->fullcaps
))
847 sendto_one(target_p
, ":%s ENCAP * GCAP :%s",
848 client_p
->name
, client_p
->serv
->fullcaps
);
853 ** Pass on my client information to the new server
855 ** First, pass only servers (idea is that if the link gets
856 ** cancelled beacause the server was already there,
857 ** there are no NICK's to be cancelled...). Of course,
858 ** if cancellation occurs, all this info is sent anyway,
859 ** and I guess the link dies when a read is attempted...? --msa
861 ** Note: Link cancellation to occur at this point means
862 ** that at least two servers from my fragment are building
863 ** up connection this other fragment at the same time, it's
864 ** a race condition, not the normal way of operation...
866 ** ALSO NOTE: using the get_client_name for server names--
867 ** see previous *WARNING*!!! (Also, original inpath
870 RB_DLINK_FOREACH(ptr
, global_serv_list
.head
)
872 target_p
= ptr
->data
;
874 /* target_p->from == target_p for target_p == client_p */
875 if(IsMe(target_p
) || target_p
->from
== client_p
)
878 /* presumption, if target has an id, so does its uplink */
879 if(has_id(client_p
) && has_id(target_p
))
880 sendto_one(client_p
, ":%s SID %s %d %s :%s%s",
881 target_p
->servptr
->id
, target_p
->name
,
882 target_p
->hopcount
+ 1, target_p
->id
,
883 IsHidden(target_p
) ? "(H) " : "", target_p
->info
);
885 sendto_one(client_p
, ":%s SERVER %s %d :%s%s",
886 target_p
->servptr
->name
,
887 target_p
->name
, target_p
->hopcount
+ 1,
888 IsHidden(target_p
) ? "(H) " : "", target_p
->info
);
890 if(IsCapable(client_p
, CAP_ENCAP
) &&
891 !EmptyString(target_p
->serv
->fullcaps
))
892 sendto_one(client_p
, ":%s ENCAP * GCAP :%s",
893 get_id(target_p
, client_p
),
894 target_p
->serv
->fullcaps
);
899 /* Always send a PING after connect burst is done */
900 sendto_one(client_p
, "PING :%s", get_id(&me
, client_p
));
902 free_pre_client(client_p
);
904 if (!IsCapable(client_p
, CAP_ZIP
))
905 send_pop_queue(client_p
);
911 * New server connection code
912 * Based upon the stuff floating about in s_bsd.c
917 serv_connect_resolved(struct Client
*client_p
)
919 struct rb_sockaddr_storage myipnum
;
920 char vhoststr
[HOSTIPLEN
];
921 struct server_conf
*server_p
;
924 if((server_p
= client_p
->localClient
->att_sconf
) == NULL
)
926 sendto_realops_snomask(SNO_GENERAL
, is_remote_connect(client_p
) ? L_NETWIDE
: L_ALL
, "Lost connect{} block for %s",
927 get_server_name(client_p
, HIDE_IP
));
928 exit_client(client_p
, client_p
, &me
, "Lost connect{} block");
933 if(client_p
->localClient
->ip
.ss_family
== AF_INET6
)
934 port
= ntohs(((struct sockaddr_in6
*)&client_p
->localClient
->ip
)->sin6_port
);
937 port
= ntohs(((struct sockaddr_in
*)&client_p
->localClient
->ip
)->sin_port
);
939 if(ServerConfVhosted(server_p
))
941 memcpy(&myipnum
, &server_p
->my_ipnum
, sizeof(myipnum
));
942 ((struct sockaddr_in
*)&myipnum
)->sin_port
= 0;
943 myipnum
.ss_family
= server_p
->aftype
;
946 else if(server_p
->aftype
== AF_INET
&& ServerInfo
.specific_ipv4_vhost
)
948 memcpy(&myipnum
, &ServerInfo
.ip
, sizeof(myipnum
));
949 ((struct sockaddr_in
*)&myipnum
)->sin_port
= 0;
950 myipnum
.ss_family
= AF_INET
;
951 SET_SS_LEN(&myipnum
, sizeof(struct sockaddr_in
));
955 else if((server_p
->aftype
== AF_INET6
) && ServerInfo
.specific_ipv6_vhost
)
957 memcpy(&myipnum
, &ServerInfo
.ip6
, sizeof(myipnum
));
958 ((struct sockaddr_in6
*)&myipnum
)->sin6_port
= 0;
959 myipnum
.ss_family
= AF_INET6
;
960 SET_SS_LEN(&myipnum
, sizeof(struct sockaddr_in6
));
966 ilog(L_SERVER
, "Connecting to %s[%s] port %d (%s)", client_p
->name
, client_p
->sockhost
, port
,
968 server_p
->aftype
== AF_INET6
? "IPv6" :
970 (server_p
->aftype
== AF_INET
? "IPv4" : "?"));
972 if(ServerConfSSL(server_p
))
974 rb_connect_tcp(client_p
->localClient
->F
, (struct sockaddr
*)&client_p
->localClient
->ip
,
975 NULL
, 0, serv_connect_ssl_callback
,
976 client_p
, ConfigFileEntry
.connect_timeout
);
979 rb_connect_tcp(client_p
->localClient
->F
, (struct sockaddr
*)&client_p
->localClient
->ip
,
980 NULL
, 0, serv_connect_callback
,
981 client_p
, ConfigFileEntry
.connect_timeout
);
986 rb_inet_ntop_sock((struct sockaddr
*)&myipnum
, vhoststr
, sizeof vhoststr
);
987 ilog(L_SERVER
, "Connecting to %s[%s] port %d (%s) (vhost %s)", client_p
->name
, client_p
->sockhost
, port
,
989 server_p
->aftype
== AF_INET6
? "IPv6" :
991 (server_p
->aftype
== AF_INET
? "IPv4" : "?"), vhoststr
);
994 if(ServerConfSSL(server_p
))
995 rb_connect_tcp(client_p
->localClient
->F
, (struct sockaddr
*)&client_p
->localClient
->ip
,
996 (struct sockaddr
*) &myipnum
,
997 GET_SS_LEN(&myipnum
), serv_connect_ssl_callback
, client_p
,
998 ConfigFileEntry
.connect_timeout
);
1000 rb_connect_tcp(client_p
->localClient
->F
, (struct sockaddr
*)&client_p
->localClient
->ip
,
1001 (struct sockaddr
*) &myipnum
,
1002 GET_SS_LEN(&myipnum
), serv_connect_callback
, client_p
,
1003 ConfigFileEntry
.connect_timeout
);
1009 serv_connect_dns_callback(void *vptr
, struct DNSReply
*reply
)
1011 struct Client
*client_p
= vptr
;
1014 rb_free(client_p
->localClient
->dnsquery
);
1015 client_p
->localClient
->dnsquery
= NULL
;
1019 sendto_realops_snomask(SNO_GENERAL
, is_remote_connect(client_p
) ? L_NETWIDE
: L_ALL
, "Cannot resolve hostname for %s",
1020 get_server_name(client_p
, HIDE_IP
));
1021 ilog(L_SERVER
, "Cannot resolve hostname for %s",
1022 log_client_name(client_p
, HIDE_IP
));
1023 exit_client(client_p
, client_p
, &me
, "Cannot resolve hostname");
1027 if(reply
->addr
.ss_family
== AF_INET6
)
1028 port
= ((struct sockaddr_in6
*)&client_p
->localClient
->ip
)->sin6_port
;
1031 port
= ((struct sockaddr_in
*)&client_p
->localClient
->ip
)->sin_port
;
1032 memcpy(&client_p
->localClient
->ip
, &reply
->addr
, sizeof(client_p
->localClient
->ip
));
1034 if(reply
->addr
.ss_family
== AF_INET6
)
1035 ((struct sockaddr_in6
*)&client_p
->localClient
->ip
)->sin6_port
= port
;
1038 ((struct sockaddr_in
*)&client_p
->localClient
->ip
)->sin_port
= port
;
1039 /* Set sockhost properly now -- jilles */
1040 rb_inet_ntop_sock((struct sockaddr
*)&client_p
->localClient
->ip
,
1041 client_p
->sockhost
, sizeof client_p
->sockhost
);
1042 serv_connect_resolved(client_p
);
1046 * serv_connect() - initiate a server connection
1048 * inputs - pointer to conf
1049 * - pointer to client doing the connet
1053 * This code initiates a connection to a server. It first checks to make
1054 * sure the given server exists. If this is the case, it creates a socket,
1055 * creates a client, saves the socket information in the client, and
1056 * initiates a connection to the server through rb_connect_tcp(). The
1057 * completion of this goes through serv_completed_connection().
1059 * We return 1 if the connection is attempted, since we don't know whether
1060 * it suceeded or not, and 0 if it fails in here somewhere.
1063 serv_connect(struct server_conf
*server_p
, struct Client
*by
)
1065 struct Client
*client_p
;
1066 struct rb_sockaddr_storage theiripnum
;
1068 char note
[HOSTLEN
+ 10];
1070 s_assert(server_p
!= NULL
);
1071 if(server_p
== NULL
)
1075 * Make sure this server isn't already connected
1077 if((client_p
= find_server(NULL
, server_p
->name
)))
1079 sendto_realops_snomask(SNO_GENERAL
, L_ALL
,
1080 "Server %s already present from %s",
1081 server_p
->name
, get_server_name(client_p
, SHOW_IP
));
1082 if(by
&& IsPerson(by
) && !MyClient(by
))
1083 sendto_one_notice(by
, ":Server %s already present from %s",
1084 server_p
->name
, get_server_name(client_p
, SHOW_IP
));
1088 /* create a socket for the server connection */
1089 if((F
= rb_socket(server_p
->aftype
, SOCK_STREAM
, 0, NULL
)) == NULL
)
1091 ilog_error("opening a stream socket");
1095 rb_snprintf(note
, sizeof note
, "Server: %s", server_p
->name
);
1098 /* Create a local client */
1099 client_p
= make_client(NULL
);
1101 /* Copy in the server, hostname, fd
1102 * The sockhost may be a hostname, this will be corrected later
1105 rb_strlcpy(client_p
->name
, server_p
->name
, sizeof(client_p
->name
));
1106 rb_strlcpy(client_p
->host
, server_p
->host
, sizeof(client_p
->host
));
1107 rb_strlcpy(client_p
->sockhost
, server_p
->host
, sizeof(client_p
->sockhost
));
1108 client_p
->localClient
->F
= F
;
1109 add_to_cli_fd_hash(client_p
);
1112 * Set up the initial server evilness, ripped straight from
1113 * connect_server(), so don't blame me for it being evil.
1117 if(!rb_set_buffers(client_p
->localClient
->F
, READBUF_SIZE
))
1119 ilog_error("setting the buffer size for a server connection");
1123 * Attach config entries to client here rather than in
1124 * serv_connect_callback(). This to avoid null pointer references.
1126 attach_server_conf(client_p
, server_p
);
1129 * at this point we have a connection in progress and C/N lines
1130 * attached to the client, the socket info should be saved in the
1131 * client and it should either be resolved or have a valid address.
1133 * The socket has been connected or connect is in progress.
1135 make_server(client_p
);
1136 if(by
&& IsPerson(by
))
1138 strcpy(client_p
->serv
->by
, by
->name
);
1139 if(client_p
->serv
->user
)
1140 free_user(client_p
->serv
->user
, NULL
);
1141 client_p
->serv
->user
= by
->user
;
1146 strcpy(client_p
->serv
->by
, "AutoConn.");
1147 if(client_p
->serv
->user
)
1148 free_user(client_p
->serv
->user
, NULL
);
1149 client_p
->serv
->user
= NULL
;
1151 SetConnecting(client_p
);
1152 rb_dlinkAddTail(client_p
, &client_p
->node
, &global_client_list
);
1154 if (rb_inet_pton_sock(server_p
->host
, (struct sockaddr
*)&theiripnum
) > 0)
1156 memcpy(&client_p
->localClient
->ip
, &theiripnum
, sizeof(client_p
->localClient
->ip
));
1158 if(theiripnum
.ss_family
== AF_INET6
)
1159 ((struct sockaddr_in6
*)&client_p
->localClient
->ip
)->sin6_port
= htons(server_p
->port
);
1162 ((struct sockaddr_in
*)&client_p
->localClient
->ip
)->sin_port
= htons(server_p
->port
);
1164 return serv_connect_resolved(client_p
);
1169 if(theiripnum
.ss_family
== AF_INET6
)
1170 ((struct sockaddr_in6
*)&client_p
->localClient
->ip
)->sin6_port
= htons(server_p
->port
);
1173 ((struct sockaddr_in
*)&client_p
->localClient
->ip
)->sin_port
= htons(server_p
->port
);
1175 client_p
->localClient
->dnsquery
= rb_malloc(sizeof(struct DNSQuery
));
1176 client_p
->localClient
->dnsquery
->ptr
= client_p
;
1177 client_p
->localClient
->dnsquery
->callback
= serv_connect_dns_callback
;
1178 gethost_byname_type(server_p
->host
, client_p
->localClient
->dnsquery
,
1180 server_p
->aftype
== AF_INET6
? T_AAAA
:
1188 serv_connect_ev(void *data
)
1190 struct Client
*client_p
= data
;
1191 serv_connect_callback(client_p
->localClient
->F
, RB_OK
, client_p
);
1195 serv_connect_ssl_callback(rb_fde_t
*F
, int status
, void *data
)
1197 struct Client
*client_p
= data
;
1201 /* XXX deal with failure */
1204 rb_connect_sockaddr(F
, (struct sockaddr
*)&client_p
->localClient
->ip
, sizeof(client_p
->localClient
->ip
));
1205 rb_socketpair(AF_UNIX
, SOCK_STREAM
, 0, &xF
[0], &xF
[1], "Outgoing ssld connection");
1206 del_from_cli_fd_hash(client_p
);
1207 client_p
->localClient
->F
= xF
[0];
1208 add_to_cli_fd_hash(client_p
);
1210 client_p
->localClient
->ssl_ctl
= start_ssld_connect(F
, xF
[1], rb_get_fd(xF
[0]));
1212 rb_event_addonce("serv_connect_ev", serv_connect_ev
, client_p
, 1);
1216 * serv_connect_callback() - complete a server connection.
1218 * This routine is called after the server connection attempt has
1219 * completed. If unsucessful, an error is sent to ops and the client
1220 * is closed. If sucessful, it goes through the initialisation/check
1221 * procedures, the capabilities are sent, and the socket is then
1222 * marked for reading.
1225 serv_connect_callback(rb_fde_t
*F
, int status
, void *data
)
1227 struct Client
*client_p
= data
;
1228 struct server_conf
*server_p
;
1231 /* First, make sure its a real client! */
1232 s_assert(client_p
!= NULL
);
1233 s_assert(client_p
->localClient
->F
== F
);
1235 if(client_p
== NULL
)
1238 /* while we were waiting for the callback, its possible this already
1241 if(find_server(NULL
, client_p
->name
) != NULL
)
1243 exit_client(client_p
, client_p
, &me
, "Server Exists");
1247 if(client_p
->localClient
->ssl_ctl
== NULL
)
1248 rb_connect_sockaddr(F
, (struct sockaddr
*)&client_p
->localClient
->ip
, sizeof(client_p
->localClient
->ip
));
1250 /* Check the status */
1253 /* COMM_ERR_TIMEOUT wont have an errno associated with it,
1254 * the others will.. --fl
1256 if(status
== RB_ERR_TIMEOUT
)
1258 sendto_realops_snomask(SNO_GENERAL
, is_remote_connect(client_p
) ? L_NETWIDE
: L_ALL
,
1259 "Error connecting to %s[%s]: %s",
1261 #ifdef HIDE_SERVERS_IPS
1267 ilog(L_SERVER
, "Error connecting to %s[%s]: %s",
1268 client_p
->name
, client_p
->sockhost
,
1273 errstr
= strerror(rb_get_sockerr(F
));
1274 sendto_realops_snomask(SNO_GENERAL
, is_remote_connect(client_p
) ? L_NETWIDE
: L_ALL
,
1275 "Error connecting to %s[%s]: %s (%s)",
1277 #ifdef HIDE_SERVERS_IPS
1282 rb_errstr(status
), errstr
);
1283 ilog(L_SERVER
, "Error connecting to %s[%s]: %s (%s)",
1284 client_p
->name
, client_p
->sockhost
,
1285 rb_errstr(status
), errstr
);
1288 exit_client(client_p
, client_p
, &me
, rb_errstr(status
));
1292 /* COMM_OK, so continue the connection procedure */
1293 /* Get the C/N lines */
1294 if((server_p
= client_p
->localClient
->att_sconf
) == NULL
)
1296 sendto_realops_snomask(SNO_GENERAL
, is_remote_connect(client_p
) ? L_NETWIDE
: L_ALL
, "Lost connect{} block for %s",
1297 get_server_name(client_p
, HIDE_IP
));
1298 exit_client(client_p
, client_p
, &me
, "Lost connect{} block");
1302 /* Next, send the initial handshake */
1303 SetHandshake(client_p
);
1305 /* kludge, if we're not using TS6, dont ever send
1306 * ourselves as being TS6 capable.
1308 if(!EmptyString(server_p
->spasswd
))
1310 sendto_one(client_p
, "PASS %s TS %d :%s",
1311 server_p
->spasswd
, TS_CURRENT
, me
.id
);
1314 /* pass my info to the new server */
1315 send_capabilities(client_p
, default_server_capabs
1316 | (ServerConfCompressed(server_p
) ? CAP_ZIP_SUPPORTED
: 0)
1317 | (ServerConfTb(server_p
) ? CAP_TB
: 0));
1319 sendto_one(client_p
, "SERVER %s 1 :%s%s",
1321 ConfigServerHide
.hidden
? "(H) " : "", me
.info
);
1324 * If we've been marked dead because a send failed, just exit
1325 * here now and save everyone the trouble of us ever existing.
1327 if(IsAnyDead(client_p
))
1329 sendto_realops_snomask(SNO_GENERAL
, is_remote_connect(client_p
) ? L_NETWIDE
: L_ALL
,
1330 "%s went dead during handshake", client_p
->name
);
1331 exit_client(client_p
, client_p
, &me
, "Went dead during handshake");
1335 /* don't move to serv_list yet -- we haven't sent a burst! */
1337 /* If we get here, we're ok, so lets start reading some data */
1338 read_packet(F
, client_p
);
1341 #ifndef HAVE_SOCKETPAIR
1343 inet_socketpair(int d
, int type
, int protocol
, int sv
[2])
1345 struct sockaddr_in addr1
, addr2
, addr3
;
1346 int addr3_len
= sizeof(addr3
);
1348 int port_no
= 20000;
1350 if(d
!= AF_INET
|| type
!= SOCK_STREAM
|| protocol
)
1352 errno
= EAFNOSUPPORT
;
1355 if(((sv
[0] = socket(AF_INET
, SOCK_STREAM
, 0)) < 0) || ((sv
[1] = socket(AF_INET
, SOCK_STREAM
, 0)) < 0))
1358 addr1
.sin_port
= htons(port_no
);
1359 addr1
.sin_family
= AF_INET
;
1360 addr1
.sin_addr
.s_addr
= htonl(INADDR_LOOPBACK
);
1361 while ((rc
= bind (sv
[0], (struct sockaddr
*) &addr1
, sizeof (addr1
))) < 0 && errno
== EADDRINUSE
)
1362 addr1
.sin_port
= htons(++port_no
);
1367 if(listen(sv
[0], 1) < 0)
1374 addr2
.sin_port
= htons(port_no
);
1375 addr2
.sin_family
= AF_INET
;
1376 addr2
.sin_addr
.s_addr
= htonl(INADDR_LOOPBACK
);
1377 if(connect (sv
[1], (struct sockaddr
*) &addr2
, sizeof (addr2
)) < 0)
1384 if((fd
= accept(sv
[1], (struct sockaddr
*) &addr3
, &addr3_len
)) < 0)