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 #ifndef HAVE_SOCKETPAIR
63 static int inet_socketpair(int d
, int type
, int protocol
, int sv
[2]);
66 int MaxConnectionCount
= 1;
67 int MaxClientCount
= 1;
68 int refresh_user_links
= 0;
70 static char buf
[BUFSIZE
];
73 * list of recognized server capabilities. "TS" is not on the list
74 * because all servers that we talk to already do TS, and the kludged
75 * extra argument to "PASS" takes care of checking that. -orabidoo
77 struct Capability captab
[] = {
84 { "KNOCK", CAP_KNOCK
},
87 { "UNKLN", CAP_UNKLN
},
88 { "CLUSTER", CAP_CLUSTER
},
89 { "ENCAP", CAP_ENCAP
},
90 { "SERVICES", CAP_SERVICE
},
91 { "RSFNC", CAP_RSFNC
},
94 { "EOPMOD", CAP_EOPMOD
},
98 static CNCB serv_connect_callback
;
99 static CNCB serv_connect_ssl_callback
;
102 * hunt_server - Do the basic thing in delivering the message (command)
103 * across the relays to the specific server (server) for
106 * Note: The command is a format string and *MUST* be
107 * of prefixed style (e.g. ":%s COMMAND %s ...").
108 * Command can have only max 8 parameters.
110 * server parv[server] is the parameter identifying the
114 * parv[server] is replaced with the pointer to the
115 * real servername from the matched client (I'm lazy
118 * returns: (see #defines)
121 hunt_server(struct Client
*client_p
, struct Client
*source_p
,
122 const char *command
, int server
, int parc
, const char *parv
[])
124 struct Client
*target_p
;
131 * Assume it's me, if no server
133 if(parc
<= server
|| EmptyString(parv
[server
]) ||
134 match(parv
[server
], me
.name
) || (strcmp(parv
[server
], me
.id
) == 0))
135 return (HUNTED_ISME
);
137 new = LOCAL_COPY(parv
[server
]);
140 * These are to pickup matches that would cause the following
141 * message to go in the wrong direction while doing quick fast
142 * non-matching lookups.
144 if(MyClient(source_p
))
145 target_p
= find_named_client(new);
147 target_p
= find_client(new);
150 if(target_p
->from
== source_p
->from
&& !MyConnect(target_p
))
154 wilds
= (strchr(new, '?') || strchr(new, '*'));
157 * Again, if there are no wild cards involved in the server
158 * name, use the hash lookup
160 if(!target_p
&& wilds
)
162 RB_DLINK_FOREACH(ptr
, global_client_list
.head
)
164 if(match(new, ((struct Client
*) (ptr
->data
))->name
))
166 target_p
= ptr
->data
;
172 if(target_p
&& !IsRegistered(target_p
))
177 if(IsMe(target_p
) || MyClient(target_p
))
181 parv
[server
] = get_id(target_p
, target_p
);
183 sendto_one(target_p
, command
, get_id(source_p
, target_p
),
184 parv
[1], parv
[2], parv
[3], parv
[4], parv
[5], parv
[6], parv
[7], parv
[8]);
186 return (HUNTED_PASS
);
189 if(MyClient(source_p
) || !IsDigit(parv
[server
][0]))
190 sendto_one_numeric(source_p
, ERR_NOSUCHSERVER
,
191 form_str(ERR_NOSUCHSERVER
), parv
[server
]);
192 return (HUNTED_NOSUCH
);
196 * try_connections - scan through configuration and try new connections.
197 * Returns the calendar time when the next call to this
198 * function should be made latest. (No harm done if this
199 * is called earlier or later...)
202 try_connections(void *unused
)
204 struct Client
*client_p
;
205 struct server_conf
*server_p
= NULL
;
206 struct server_conf
*tmp_p
;
209 int connecting
= FALSE
;
213 RB_DLINK_FOREACH(ptr
, server_conf_list
.head
)
217 if(ServerConfIllegal(tmp_p
) || !ServerConfAutoconn(tmp_p
))
220 /* don't allow ssl connections if ssl isn't setup */
221 if(ServerConfSSL(tmp_p
) && (!ssl_ok
|| !get_ssld_count()))
224 cltmp
= tmp_p
->class;
227 * Skip this entry if the use of it is still on hold until
228 * future. Otherwise handle this entry (and set it on hold
229 * until next time). Will reset only hold times, if already
230 * made one successfull connection... [this algorithm is
231 * a bit fuzzy... -- msa >;) ]
233 if(tmp_p
->hold
> rb_current_time())
235 if(next
> tmp_p
->hold
|| next
== 0)
240 confrq
= get_con_freq(cltmp
);
241 tmp_p
->hold
= rb_current_time() + confrq
;
244 * Found a CONNECT config with port specified, scan clients
245 * and see if this server is already connected?
247 client_p
= find_server(NULL
, tmp_p
->name
);
249 if(!client_p
&& (CurrUsers(cltmp
) < MaxUsers(cltmp
)) && !connecting
)
253 /* We connect only one at time... */
257 if((next
> tmp_p
->hold
) || (next
== 0))
261 /* TODO: change this to set active flag to 0 when added to event! --Habeeb */
262 if(GlobalSetOptions
.autoconn
== 0)
268 /* move this connect entry to end.. */
269 rb_dlinkDelete(&server_p
->node
, &server_conf_list
);
270 rb_dlinkAddTail(server_p
, &server_p
->node
, &server_conf_list
);
273 * We used to only print this if serv_connect() actually
274 * suceeded, but since rb_tcp_connect() can call the callback
275 * immediately if there is an error, we were getting error messages
276 * in the wrong order. SO, we just print out the activated line,
277 * and let serv_connect() / serv_connect_callback() print an
278 * error afterwards if it fails.
281 sendto_realops_snomask(SNO_GENERAL
, L_ALL
,
282 "Connection to %s activated",
285 serv_connect(server_p
, 0);
289 check_server(const char *name
, struct Client
*client_p
)
291 struct server_conf
*server_p
= NULL
;
292 struct server_conf
*tmp_p
;
296 s_assert(NULL
!= client_p
);
300 if(!(client_p
->localClient
->passwd
))
303 if(strlen(name
) > HOSTLEN
)
306 RB_DLINK_FOREACH(ptr
, server_conf_list
.head
)
310 if(ServerConfIllegal(tmp_p
))
313 if(!match(tmp_p
->name
, name
))
318 /* XXX: Fix me for IPv6 */
319 /* XXX sockhost is the IPv4 ip as a string */
320 if(match(tmp_p
->host
, client_p
->host
) ||
321 match(tmp_p
->host
, client_p
->sockhost
))
325 if(ServerConfEncrypted(tmp_p
))
327 if(!strcmp(tmp_p
->passwd
, rb_crypt(client_p
->localClient
->passwd
,
334 else if(!strcmp(tmp_p
->passwd
, client_p
->localClient
->passwd
))
345 if(ServerConfSSL(server_p
) && client_p
->localClient
->ssl_ctl
== NULL
)
350 attach_server_conf(client_p
, server_p
);
352 /* clear ZIP/TB if they support but we dont want them */
354 if(!ServerConfCompressed(server_p
))
356 ClearCap(client_p
, CAP_ZIP
);
358 if(!ServerConfTb(server_p
))
359 ClearCap(client_p
, CAP_TB
);
367 * inputs - Client pointer to send to
368 * - int flag of capabilities that this server has
370 * side effects - send the CAPAB line to a server -orabidoo
374 send_capabilities(struct Client
*client_p
, int cap_can_send
)
376 struct Capability
*cap
;
377 char msgbuf
[BUFSIZE
];
383 for (cap
= captab
; cap
->name
; ++cap
)
385 if(cap
->cap
& cap_can_send
)
387 tl
= rb_sprintf(t
, "%s ", cap
->name
);
395 sendto_one(client_p
, "CAPAB :%s", msgbuf
);
400 * input - client to burst to, channel name, list to burst, mode flag
402 * side effects - client is sent a list of +b, +e, or +I modes
405 burst_modes_TS6(struct Client
*client_p
, struct Channel
*chptr
,
406 rb_dlink_list
*list
, char flag
)
415 cur_len
= mlen
= rb_sprintf(buf
, ":%s BMASK %ld %s %c :",
416 me
.id
, (long) chptr
->channelts
, chptr
->chname
, flag
);
419 RB_DLINK_FOREACH(ptr
, list
->head
)
423 tlen
= strlen(banptr
->banstr
) + 1;
426 if(cur_len
+ tlen
> BUFSIZE
- 3)
428 /* the one we're trying to send doesnt fit at all! */
435 /* chop off trailing space and send.. */
437 sendto_one(client_p
, "%s", buf
);
442 rb_sprintf(t
, "%s ", banptr
->banstr
);
447 /* cant ever exit the loop above without having modified buf,
448 * chop off trailing space and send.
451 sendto_one(client_p
, "%s", buf
);
457 * inputs - client (server) to send nick towards
458 * - client to send nick for
460 * side effects - NICK message is sent towards given client_p
463 burst_TS6(struct Client
*client_p
)
465 static char ubuf
[12];
466 struct Client
*target_p
;
467 struct Channel
*chptr
;
468 struct membership
*msptr
;
469 hook_data_client hclientinfo
;
470 hook_data_channel hchaninfo
;
477 hclientinfo
.client
= hchaninfo
.client
= client_p
;
479 RB_DLINK_FOREACH(ptr
, global_client_list
.head
)
481 target_p
= ptr
->data
;
483 if(!IsPerson(target_p
))
486 send_umode(NULL
, target_p
, 0, 0, ubuf
);
493 if(IsCapable(client_p
, CAP_EUID
))
494 sendto_one(client_p
, ":%s EUID %s %d %ld %s %s %s %s %s %s %s :%s",
495 target_p
->servptr
->id
, target_p
->name
,
496 target_p
->hopcount
+ 1,
497 (long) target_p
->tsinfo
, ubuf
,
498 target_p
->username
, target_p
->host
,
499 IsIPSpoof(target_p
) ? "0" : target_p
->sockhost
,
501 IsDynSpoof(target_p
) ? target_p
->orighost
: "*",
502 EmptyString(target_p
->user
->suser
) ? "*" : target_p
->user
->suser
,
505 sendto_one(client_p
, ":%s UID %s %d %ld %s %s %s %s %s :%s",
506 target_p
->servptr
->id
, target_p
->name
,
507 target_p
->hopcount
+ 1,
508 (long) target_p
->tsinfo
, ubuf
,
509 target_p
->username
, target_p
->host
,
510 IsIPSpoof(target_p
) ? "0" : target_p
->sockhost
,
511 target_p
->id
, target_p
->info
);
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;
555 if(cur_len
+ tlen
>= BUFSIZE
- 3)
558 sendto_one(client_p
, "%s", buf
);
563 rb_sprintf(t
, "%s%s ", find_channel_status(msptr
, 1),
564 use_id(msptr
->client_p
));
570 if (rb_dlink_list_length(&chptr
->members
) > 0)
572 /* remove trailing space */
575 sendto_one(client_p
, "%s", buf
);
577 if(rb_dlink_list_length(&chptr
->banlist
) > 0)
578 burst_modes_TS6(client_p
, chptr
, &chptr
->banlist
, 'b');
580 if(IsCapable(client_p
, CAP_EX
) &&
581 rb_dlink_list_length(&chptr
->exceptlist
) > 0)
582 burst_modes_TS6(client_p
, chptr
, &chptr
->exceptlist
, 'e');
584 if(IsCapable(client_p
, CAP_IE
) &&
585 rb_dlink_list_length(&chptr
->invexlist
) > 0)
586 burst_modes_TS6(client_p
, chptr
, &chptr
->invexlist
, 'I');
588 if(rb_dlink_list_length(&chptr
->quietlist
) > 0)
589 burst_modes_TS6(client_p
, chptr
, &chptr
->quietlist
, 'q');
591 if(IsCapable(client_p
, CAP_TB
) && chptr
->topic
!= NULL
)
592 sendto_one(client_p
, ":%s TB %s %ld %s%s:%s",
593 me
.id
, chptr
->chname
, (long) chptr
->topic_time
,
594 ConfigChannel
.burst_topicwho
? chptr
->topic_info
: "",
595 ConfigChannel
.burst_topicwho
? " " : "",
598 hchaninfo
.chptr
= chptr
;
599 call_hook(h_burst_channel
, &hchaninfo
);
602 hclientinfo
.target
= NULL
;
603 call_hook(h_burst_finished
, &hclientinfo
);
607 * show_capabilities - show current server capabilities
609 * inputs - pointer to an struct Client
610 * output - pointer to static string
611 * side effects - build up string representing capabilities of server listed
614 show_capabilities(struct Client
*target_p
)
616 static char msgbuf
[BUFSIZE
];
617 struct Capability
*cap
;
620 rb_strlcpy(msgbuf
, " TS6", sizeof(msgbuf
));
623 rb_strlcat(msgbuf
, " SSL", sizeof(msgbuf
));
625 if(!IsServer(target_p
) || !target_p
->serv
->caps
) /* short circuit if no caps */
628 for (cap
= captab
; cap
->cap
; ++cap
)
630 if(cap
->cap
& target_p
->serv
->caps
)
631 rb_snprintf_append(msgbuf
, sizeof(msgbuf
), " %s", cap
->name
);
640 * inputs - pointer to a struct Client
645 server_estab(struct Client
*client_p
)
647 struct Client
*target_p
;
648 struct server_conf
*server_p
;
649 hook_data_client hdata
;
652 char note
[HOSTLEN
+ 15];
654 s_assert(NULL
!= client_p
);
658 host
= client_p
->name
;
660 if((server_p
= client_p
->localClient
->att_sconf
) == NULL
)
662 /* This shouldn't happen, better tell the ops... -A1kmm */
663 sendto_realops_snomask(SNO_GENERAL
, is_remote_connect(client_p
) ? L_NETWIDE
: L_ALL
,
664 "Warning: Lost connect{} block for server %s!", host
);
665 return exit_client(client_p
, client_p
, client_p
, "Lost connect{} block!");
668 /* We shouldn't have to check this, it should already done before
669 * server_estab is called. -A1kmm
671 if(client_p
->localClient
->passwd
)
673 memset(client_p
->localClient
->passwd
, 0, strlen(client_p
->localClient
->passwd
));
674 rb_free(client_p
->localClient
->passwd
);
675 client_p
->localClient
->passwd
= NULL
;
678 /* Its got identd , since its a server */
681 /* If there is something in the serv_list, it might be this
682 * connecting server..
684 if(!ServerInfo
.hub
&& serv_list
.head
)
686 if(client_p
!= serv_list
.head
->data
|| serv_list
.head
->next
)
688 ServerStats
.is_ref
++;
689 sendto_one(client_p
, "ERROR :I'm a leaf not a hub");
690 return exit_client(client_p
, client_p
, client_p
, "I'm a leaf");
694 if(IsUnknown(client_p
))
697 * jdc -- 1. Use EmptyString(), not [0] index reference.
698 * 2. Check ->spasswd, not ->passwd.
700 if(!EmptyString(server_p
->spasswd
))
702 sendto_one(client_p
, "PASS %s TS %d :%s",
703 server_p
->spasswd
, TS_CURRENT
, me
.id
);
706 /* pass info to new server */
707 send_capabilities(client_p
, default_server_capabs
708 | (ServerConfCompressed(server_p
) ? CAP_ZIP_SUPPORTED
: 0)
709 | (ServerConfTb(server_p
) ? CAP_TB
: 0));
711 sendto_one(client_p
, "SERVER %s 1 :%s%s",
713 ConfigServerHide
.hidden
? "(H) " : "",
714 (me
.info
[0]) ? (me
.info
) : "IRCers United");
717 if(!rb_set_buffers(client_p
->localClient
->F
, READBUF_SIZE
))
718 ilog_error("rb_set_buffers failed for server");
720 /* Enable compression now */
721 if(IsCapable(client_p
, CAP_ZIP
))
723 start_zlib_session(client_p
);
725 sendto_one(client_p
, "SVINFO %d %d 0 :%ld", TS_CURRENT
, TS_MIN
, (long int)rb_current_time());
727 client_p
->servptr
= &me
;
729 if(IsAnyDead(client_p
))
730 return CLIENT_EXITED
;
734 /* Update the capability combination usage counts */
735 set_chcap_usage_counts(client_p
);
737 rb_dlinkAdd(client_p
, &client_p
->lnode
, &me
.serv
->servers
);
738 rb_dlinkMoveNode(&client_p
->localClient
->tnode
, &unknown_list
, &serv_list
);
739 rb_dlinkAddTailAlloc(client_p
, &global_serv_list
);
742 add_to_id_hash(client_p
->id
, client_p
);
744 add_to_client_hash(client_p
->name
, client_p
);
745 /* doesnt duplicate client_p->serv if allocated this struct already */
746 make_server(client_p
);
748 client_p
->serv
->caps
= client_p
->localClient
->caps
;
750 if(client_p
->localClient
->fullcaps
)
752 client_p
->serv
->fullcaps
= rb_strdup(client_p
->localClient
->fullcaps
);
753 rb_free(client_p
->localClient
->fullcaps
);
754 client_p
->localClient
->fullcaps
= NULL
;
757 client_p
->serv
->nameinfo
= scache_connect(client_p
->name
, client_p
->info
, IsHidden(client_p
));
758 client_p
->localClient
->firsttime
= rb_current_time();
759 /* fixing eob timings.. -gnp */
761 if((rb_dlink_list_length(&lclient_list
) + rb_dlink_list_length(&serv_list
)) >
762 (unsigned long)MaxConnectionCount
)
763 MaxConnectionCount
= rb_dlink_list_length(&lclient_list
) +
764 rb_dlink_list_length(&serv_list
);
766 /* Show the real host/IP to admins */
767 sendto_realops_snomask(SNO_GENERAL
, L_ALL
,
768 "Link with %s established: (%s) link",
770 show_capabilities(client_p
));
772 ilog(L_SERVER
, "Link with %s established: (%s) link",
773 log_client_name(client_p
, SHOW_IP
), show_capabilities(client_p
));
776 hdata
.target
= client_p
;
777 call_hook(h_server_introduced
, &hdata
);
779 rb_snprintf(note
, sizeof(note
), "Server: %s", client_p
->name
);
780 rb_note(client_p
->localClient
->F
, note
);
783 ** Old sendto_serv_but_one() call removed because we now
784 ** need to send different names to different servers
785 ** (domain name matching) Send new server to other servers.
787 RB_DLINK_FOREACH(ptr
, serv_list
.head
)
789 target_p
= ptr
->data
;
791 if(target_p
== client_p
)
794 if(has_id(target_p
) && has_id(client_p
))
796 sendto_one(target_p
, ":%s SID %s 2 %s :%s%s",
797 me
.id
, client_p
->name
, client_p
->id
,
798 IsHidden(client_p
) ? "(H) " : "", client_p
->info
);
800 if(IsCapable(target_p
, CAP_ENCAP
) &&
801 !EmptyString(client_p
->serv
->fullcaps
))
802 sendto_one(target_p
, ":%s ENCAP * GCAP :%s",
803 client_p
->id
, client_p
->serv
->fullcaps
);
807 sendto_one(target_p
, ":%s SERVER %s 2 :%s%s",
808 me
.name
, client_p
->name
,
809 IsHidden(client_p
) ? "(H) " : "", client_p
->info
);
811 if(IsCapable(target_p
, CAP_ENCAP
) &&
812 !EmptyString(client_p
->serv
->fullcaps
))
813 sendto_one(target_p
, ":%s ENCAP * GCAP :%s",
814 client_p
->name
, client_p
->serv
->fullcaps
);
819 ** Pass on my client information to the new server
821 ** First, pass only servers (idea is that if the link gets
822 ** cancelled beacause the server was already there,
823 ** there are no NICK's to be cancelled...). Of course,
824 ** if cancellation occurs, all this info is sent anyway,
825 ** and I guess the link dies when a read is attempted...? --msa
827 ** Note: Link cancellation to occur at this point means
828 ** that at least two servers from my fragment are building
829 ** up connection this other fragment at the same time, it's
830 ** a race condition, not the normal way of operation...
832 ** ALSO NOTE: using the get_client_name for server names--
833 ** see previous *WARNING*!!! (Also, original inpath
836 RB_DLINK_FOREACH(ptr
, global_serv_list
.head
)
838 target_p
= ptr
->data
;
840 /* target_p->from == target_p for target_p == client_p */
841 if(IsMe(target_p
) || target_p
->from
== client_p
)
844 /* presumption, if target has an id, so does its uplink */
845 if(has_id(client_p
) && has_id(target_p
))
846 sendto_one(client_p
, ":%s SID %s %d %s :%s%s",
847 target_p
->servptr
->id
, target_p
->name
,
848 target_p
->hopcount
+ 1, target_p
->id
,
849 IsHidden(target_p
) ? "(H) " : "", target_p
->info
);
851 sendto_one(client_p
, ":%s SERVER %s %d :%s%s",
852 target_p
->servptr
->name
,
853 target_p
->name
, target_p
->hopcount
+ 1,
854 IsHidden(target_p
) ? "(H) " : "", target_p
->info
);
856 if(IsCapable(client_p
, CAP_ENCAP
) &&
857 !EmptyString(target_p
->serv
->fullcaps
))
858 sendto_one(client_p
, ":%s ENCAP * GCAP :%s",
859 get_id(target_p
, client_p
),
860 target_p
->serv
->fullcaps
);
865 /* Always send a PING after connect burst is done */
866 sendto_one(client_p
, "PING :%s", get_id(&me
, client_p
));
868 free_pre_client(client_p
);
870 send_pop_queue(client_p
);
876 * New server connection code
877 * Based upon the stuff floating about in s_bsd.c
882 serv_connect_resolved(struct Client
*client_p
)
884 struct rb_sockaddr_storage myipnum
;
885 char vhoststr
[HOSTIPLEN
];
886 struct server_conf
*server_p
;
889 if((server_p
= client_p
->localClient
->att_sconf
) == NULL
)
891 sendto_realops_snomask(SNO_GENERAL
, is_remote_connect(client_p
) ? L_NETWIDE
: L_ALL
, "Lost connect{} block for %s",
893 exit_client(client_p
, client_p
, &me
, "Lost connect{} block");
898 if(client_p
->localClient
->ip
.ss_family
== AF_INET6
)
899 port
= ntohs(((struct sockaddr_in6
*)&client_p
->localClient
->ip
)->sin6_port
);
902 port
= ntohs(((struct sockaddr_in
*)&client_p
->localClient
->ip
)->sin_port
);
904 if(ServerConfVhosted(server_p
))
906 memcpy(&myipnum
, &server_p
->my_ipnum
, sizeof(myipnum
));
907 ((struct sockaddr_in
*)&myipnum
)->sin_port
= 0;
908 myipnum
.ss_family
= server_p
->aftype
;
911 else if(server_p
->aftype
== AF_INET
&& ServerInfo
.specific_ipv4_vhost
)
913 memcpy(&myipnum
, &ServerInfo
.ip
, sizeof(myipnum
));
914 ((struct sockaddr_in
*)&myipnum
)->sin_port
= 0;
915 myipnum
.ss_family
= AF_INET
;
916 SET_SS_LEN(&myipnum
, sizeof(struct sockaddr_in
));
920 else if((server_p
->aftype
== AF_INET6
) && ServerInfo
.specific_ipv6_vhost
)
922 memcpy(&myipnum
, &ServerInfo
.ip6
, sizeof(myipnum
));
923 ((struct sockaddr_in6
*)&myipnum
)->sin6_port
= 0;
924 myipnum
.ss_family
= AF_INET6
;
925 SET_SS_LEN(&myipnum
, sizeof(struct sockaddr_in6
));
931 ilog(L_SERVER
, "Connecting to %s[%s] port %d (%s)", client_p
->name
, client_p
->sockhost
, port
,
933 server_p
->aftype
== AF_INET6
? "IPv6" :
935 (server_p
->aftype
== AF_INET
? "IPv4" : "?"));
937 if(ServerConfSSL(server_p
))
939 rb_connect_tcp(client_p
->localClient
->F
, (struct sockaddr
*)&client_p
->localClient
->ip
,
940 NULL
, 0, serv_connect_ssl_callback
,
941 client_p
, ConfigFileEntry
.connect_timeout
);
944 rb_connect_tcp(client_p
->localClient
->F
, (struct sockaddr
*)&client_p
->localClient
->ip
,
945 NULL
, 0, serv_connect_callback
,
946 client_p
, ConfigFileEntry
.connect_timeout
);
951 rb_inet_ntop_sock((struct sockaddr
*)&myipnum
, vhoststr
, sizeof vhoststr
);
952 ilog(L_SERVER
, "Connecting to %s[%s] port %d (%s) (vhost %s)", client_p
->name
, client_p
->sockhost
, port
,
954 server_p
->aftype
== AF_INET6
? "IPv6" :
956 (server_p
->aftype
== AF_INET
? "IPv4" : "?"), vhoststr
);
959 if(ServerConfSSL(server_p
))
960 rb_connect_tcp(client_p
->localClient
->F
, (struct sockaddr
*)&client_p
->localClient
->ip
,
961 (struct sockaddr
*) &myipnum
,
962 GET_SS_LEN(&myipnum
), serv_connect_ssl_callback
, client_p
,
963 ConfigFileEntry
.connect_timeout
);
965 rb_connect_tcp(client_p
->localClient
->F
, (struct sockaddr
*)&client_p
->localClient
->ip
,
966 (struct sockaddr
*) &myipnum
,
967 GET_SS_LEN(&myipnum
), serv_connect_callback
, client_p
,
968 ConfigFileEntry
.connect_timeout
);
974 serv_connect_dns_callback(void *vptr
, struct DNSReply
*reply
)
976 struct Client
*client_p
= vptr
;
979 rb_free(client_p
->localClient
->dnsquery
);
980 client_p
->localClient
->dnsquery
= NULL
;
984 sendto_realops_snomask(SNO_GENERAL
, is_remote_connect(client_p
) ? L_NETWIDE
: L_ALL
, "Cannot resolve hostname for %s",
986 ilog(L_SERVER
, "Cannot resolve hostname for %s",
987 log_client_name(client_p
, HIDE_IP
));
988 exit_client(client_p
, client_p
, &me
, "Cannot resolve hostname");
992 if(reply
->addr
.ss_family
== AF_INET6
)
993 port
= ((struct sockaddr_in6
*)&client_p
->localClient
->ip
)->sin6_port
;
996 port
= ((struct sockaddr_in
*)&client_p
->localClient
->ip
)->sin_port
;
997 memcpy(&client_p
->localClient
->ip
, &reply
->addr
, sizeof(client_p
->localClient
->ip
));
999 if(reply
->addr
.ss_family
== AF_INET6
)
1000 ((struct sockaddr_in6
*)&client_p
->localClient
->ip
)->sin6_port
= port
;
1003 ((struct sockaddr_in
*)&client_p
->localClient
->ip
)->sin_port
= port
;
1004 /* Set sockhost properly now -- jilles */
1005 rb_inet_ntop_sock((struct sockaddr
*)&client_p
->localClient
->ip
,
1006 client_p
->sockhost
, sizeof client_p
->sockhost
);
1007 serv_connect_resolved(client_p
);
1011 * serv_connect() - initiate a server connection
1013 * inputs - pointer to conf
1014 * - pointer to client doing the connet
1018 * This code initiates a connection to a server. It first checks to make
1019 * sure the given server exists. If this is the case, it creates a socket,
1020 * creates a client, saves the socket information in the client, and
1021 * initiates a connection to the server through rb_connect_tcp(). The
1022 * completion of this goes through serv_completed_connection().
1024 * We return 1 if the connection is attempted, since we don't know whether
1025 * it suceeded or not, and 0 if it fails in here somewhere.
1028 serv_connect(struct server_conf
*server_p
, struct Client
*by
)
1030 struct Client
*client_p
;
1031 struct rb_sockaddr_storage theiripnum
;
1033 char note
[HOSTLEN
+ 10];
1035 s_assert(server_p
!= NULL
);
1036 if(server_p
== NULL
)
1040 * Make sure this server isn't already connected
1042 if((client_p
= find_server(NULL
, server_p
->name
)))
1044 sendto_realops_snomask(SNO_GENERAL
, L_ALL
,
1045 "Server %s already present from %s",
1046 server_p
->name
, client_p
->name
);
1047 if(by
&& IsPerson(by
) && !MyClient(by
))
1048 sendto_one_notice(by
, ":Server %s already present from %s",
1049 server_p
->name
, client_p
->name
);
1053 /* create a socket for the server connection */
1054 if((F
= rb_socket(server_p
->aftype
, SOCK_STREAM
, 0, NULL
)) == NULL
)
1056 ilog_error("opening a stream socket");
1060 rb_snprintf(note
, sizeof note
, "Server: %s", server_p
->name
);
1063 /* Create a local client */
1064 client_p
= make_client(NULL
);
1066 /* Copy in the server, hostname, fd
1067 * The sockhost may be a hostname, this will be corrected later
1070 rb_strlcpy(client_p
->name
, server_p
->name
, sizeof(client_p
->name
));
1071 rb_strlcpy(client_p
->host
, server_p
->host
, sizeof(client_p
->host
));
1072 rb_strlcpy(client_p
->sockhost
, server_p
->host
, sizeof(client_p
->sockhost
));
1073 client_p
->localClient
->F
= F
;
1074 add_to_cli_fd_hash(client_p
);
1077 * Set up the initial server evilness, ripped straight from
1078 * connect_server(), so don't blame me for it being evil.
1082 if(!rb_set_buffers(client_p
->localClient
->F
, READBUF_SIZE
))
1084 ilog_error("setting the buffer size for a server connection");
1088 * Attach config entries to client here rather than in
1089 * serv_connect_callback(). This to avoid null pointer references.
1091 attach_server_conf(client_p
, server_p
);
1094 * at this point we have a connection in progress and C/N lines
1095 * attached to the client, the socket info should be saved in the
1096 * client and it should either be resolved or have a valid address.
1098 * The socket has been connected or connect is in progress.
1100 make_server(client_p
);
1101 if(by
&& IsPerson(by
))
1103 strcpy(client_p
->serv
->by
, by
->name
);
1104 if(client_p
->serv
->user
)
1105 free_user(client_p
->serv
->user
, NULL
);
1106 client_p
->serv
->user
= by
->user
;
1111 strcpy(client_p
->serv
->by
, "AutoConn.");
1112 if(client_p
->serv
->user
)
1113 free_user(client_p
->serv
->user
, NULL
);
1114 client_p
->serv
->user
= NULL
;
1116 SetConnecting(client_p
);
1117 rb_dlinkAddTail(client_p
, &client_p
->node
, &global_client_list
);
1119 if (rb_inet_pton_sock(server_p
->host
, (struct sockaddr
*)&theiripnum
) > 0)
1121 memcpy(&client_p
->localClient
->ip
, &theiripnum
, sizeof(client_p
->localClient
->ip
));
1123 if(theiripnum
.ss_family
== AF_INET6
)
1124 ((struct sockaddr_in6
*)&client_p
->localClient
->ip
)->sin6_port
= htons(server_p
->port
);
1127 ((struct sockaddr_in
*)&client_p
->localClient
->ip
)->sin_port
= htons(server_p
->port
);
1129 return serv_connect_resolved(client_p
);
1134 if(theiripnum
.ss_family
== AF_INET6
)
1135 ((struct sockaddr_in6
*)&client_p
->localClient
->ip
)->sin6_port
= htons(server_p
->port
);
1138 ((struct sockaddr_in
*)&client_p
->localClient
->ip
)->sin_port
= htons(server_p
->port
);
1140 client_p
->localClient
->dnsquery
= rb_malloc(sizeof(struct DNSQuery
));
1141 client_p
->localClient
->dnsquery
->ptr
= client_p
;
1142 client_p
->localClient
->dnsquery
->callback
= serv_connect_dns_callback
;
1143 gethost_byname_type(server_p
->host
, client_p
->localClient
->dnsquery
,
1145 server_p
->aftype
== AF_INET6
? T_AAAA
:
1153 serv_connect_ssl_callback(rb_fde_t
*F
, int status
, void *data
)
1155 struct Client
*client_p
= data
;
1157 rb_connect_sockaddr(F
, (struct sockaddr
*)&client_p
->localClient
->ip
, sizeof(client_p
->localClient
->ip
));
1160 /* Print error message, just like non-SSL. */
1161 serv_connect_callback(F
, status
, data
);
1164 if(rb_socketpair(AF_UNIX
, SOCK_STREAM
, 0, &xF
[0], &xF
[1], "Outgoing ssld connection") == -1)
1166 ilog_error("rb_socketpair failed for server");
1167 serv_connect_callback(F
, RB_ERROR
, data
);
1171 del_from_cli_fd_hash(client_p
);
1172 client_p
->localClient
->F
= xF
[0];
1173 add_to_cli_fd_hash(client_p
);
1175 client_p
->localClient
->ssl_ctl
= start_ssld_connect(F
, xF
[1], rb_get_fd(xF
[0]));
1177 serv_connect_callback(client_p
->localClient
->F
, RB_OK
, client_p
);
1181 * serv_connect_callback() - complete a server connection.
1183 * This routine is called after the server connection attempt has
1184 * completed. If unsucessful, an error is sent to ops and the client
1185 * is closed. If sucessful, it goes through the initialisation/check
1186 * procedures, the capabilities are sent, and the socket is then
1187 * marked for reading.
1190 serv_connect_callback(rb_fde_t
*F
, int status
, void *data
)
1192 struct Client
*client_p
= data
;
1193 struct server_conf
*server_p
;
1196 /* First, make sure its a real client! */
1197 s_assert(client_p
!= NULL
);
1198 s_assert(client_p
->localClient
->F
== F
);
1200 if(client_p
== NULL
)
1203 /* while we were waiting for the callback, its possible this already
1206 if(find_server(NULL
, client_p
->name
) != NULL
)
1208 exit_client(client_p
, client_p
, &me
, "Server Exists");
1212 if(client_p
->localClient
->ssl_ctl
== NULL
)
1213 rb_connect_sockaddr(F
, (struct sockaddr
*)&client_p
->localClient
->ip
, sizeof(client_p
->localClient
->ip
));
1215 /* Check the status */
1218 /* COMM_ERR_TIMEOUT wont have an errno associated with it,
1219 * the others will.. --fl
1221 if(status
== RB_ERR_TIMEOUT
)
1223 sendto_realops_snomask(SNO_GENERAL
, is_remote_connect(client_p
) ? L_NETWIDE
: L_ALL
,
1224 "Error connecting to %s[%s]: %s",
1228 ilog(L_SERVER
, "Error connecting to %s[%s]: %s",
1229 client_p
->name
, client_p
->sockhost
,
1234 errstr
= strerror(rb_get_sockerr(F
));
1235 sendto_realops_snomask(SNO_GENERAL
, is_remote_connect(client_p
) ? L_NETWIDE
: L_ALL
,
1236 "Error connecting to %s[%s]: %s (%s)",
1239 rb_errstr(status
), errstr
);
1240 ilog(L_SERVER
, "Error connecting to %s[%s]: %s (%s)",
1241 client_p
->name
, client_p
->sockhost
,
1242 rb_errstr(status
), errstr
);
1245 exit_client(client_p
, client_p
, &me
, rb_errstr(status
));
1249 /* COMM_OK, so continue the connection procedure */
1250 /* Get the C/N lines */
1251 if((server_p
= client_p
->localClient
->att_sconf
) == NULL
)
1253 sendto_realops_snomask(SNO_GENERAL
, is_remote_connect(client_p
) ? L_NETWIDE
: L_ALL
, "Lost connect{} block for %s",
1255 exit_client(client_p
, client_p
, &me
, "Lost connect{} block");
1259 /* Next, send the initial handshake */
1260 SetHandshake(client_p
);
1262 if(!EmptyString(server_p
->spasswd
))
1264 sendto_one(client_p
, "PASS %s TS %d :%s",
1265 server_p
->spasswd
, TS_CURRENT
, me
.id
);
1268 /* pass my info to the new server */
1269 send_capabilities(client_p
, default_server_capabs
1270 | (ServerConfCompressed(server_p
) ? CAP_ZIP_SUPPORTED
: 0)
1271 | (ServerConfTb(server_p
) ? CAP_TB
: 0));
1273 sendto_one(client_p
, "SERVER %s 1 :%s%s",
1275 ConfigServerHide
.hidden
? "(H) " : "", me
.info
);
1278 * If we've been marked dead because a send failed, just exit
1279 * here now and save everyone the trouble of us ever existing.
1281 if(IsAnyDead(client_p
))
1283 sendto_realops_snomask(SNO_GENERAL
, is_remote_connect(client_p
) ? L_NETWIDE
: L_ALL
,
1284 "%s went dead during handshake", client_p
->name
);
1285 exit_client(client_p
, client_p
, &me
, "Went dead during handshake");
1289 /* don't move to serv_list yet -- we haven't sent a burst! */
1291 /* If we get here, we're ok, so lets start reading some data */
1292 read_packet(F
, client_p
);
1295 #ifndef HAVE_SOCKETPAIR
1297 inet_socketpair(int d
, int type
, int protocol
, int sv
[2])
1299 struct sockaddr_in addr1
, addr2
, addr3
;
1300 int addr3_len
= sizeof(addr3
);
1302 int port_no
= 20000;
1304 if(d
!= AF_INET
|| type
!= SOCK_STREAM
|| protocol
)
1306 errno
= EAFNOSUPPORT
;
1309 if(((sv
[0] = socket(AF_INET
, SOCK_STREAM
, 0)) < 0) || ((sv
[1] = socket(AF_INET
, SOCK_STREAM
, 0)) < 0))
1312 addr1
.sin_port
= htons(port_no
);
1313 addr1
.sin_family
= AF_INET
;
1314 addr1
.sin_addr
.s_addr
= htonl(INADDR_LOOPBACK
);
1315 while ((rc
= bind (sv
[0], (struct sockaddr
*) &addr1
, sizeof (addr1
))) < 0 && errno
== EADDRINUSE
)
1316 addr1
.sin_port
= htons(++port_no
);
1321 if(listen(sv
[0], 1) < 0)
1328 addr2
.sin_port
= htons(port_no
);
1329 addr2
.sin_family
= AF_INET
;
1330 addr2
.sin_addr
.s_addr
= htonl(INADDR_LOOPBACK
);
1331 if(connect (sv
[1], (struct sockaddr
*) &addr2
, sizeof (addr2
)) < 0)
1338 if((fd
= accept(sv
[1], (struct sockaddr
*) &addr3
, &addr3_len
)) < 0)