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... */
57 #include "irc_dictionary.h"
60 #define INADDR_NONE ((unsigned int) 0xffffffff)
63 int MaxConnectionCount
= 1;
64 int MaxClientCount
= 1;
65 int refresh_user_links
= 0;
67 static char buf
[BUFSIZE
];
70 * list of recognized server capabilities. "TS" is not on the list
71 * because all servers that we talk to already do TS, and the kludged
72 * extra argument to "PASS" takes care of checking that. -orabidoo
74 struct Capability captab
[] = {
81 { "KNOCK", CAP_KNOCK
},
84 { "UNKLN", CAP_UNKLN
},
85 { "CLUSTER", CAP_CLUSTER
},
86 { "ENCAP", CAP_ENCAP
},
87 { "SERVICES", CAP_SERVICE
},
88 { "RSFNC", CAP_RSFNC
},
91 { "EOPMOD", CAP_EOPMOD
},
95 static CNCB serv_connect_callback
;
96 static CNCB serv_connect_ssl_callback
;
99 * hunt_server - Do the basic thing in delivering the message (command)
100 * across the relays to the specific server (server) for
103 * Note: The command is a format string and *MUST* be
104 * of prefixed style (e.g. ":%s COMMAND %s ...").
105 * Command can have only max 8 parameters.
107 * server parv[server] is the parameter identifying the
111 * parv[server] is replaced with the pointer to the
112 * real servername from the matched client (I'm lazy
115 * returns: (see #defines)
118 hunt_server(struct Client
*client_p
, struct Client
*source_p
,
119 const char *command
, int server
, int parc
, const char *parv
[])
121 struct Client
*target_p
;
128 * Assume it's me, if no server
130 if(parc
<= server
|| EmptyString(parv
[server
]) ||
131 match(parv
[server
], me
.name
) || (strcmp(parv
[server
], me
.id
) == 0))
132 return (HUNTED_ISME
);
134 new = LOCAL_COPY(parv
[server
]);
137 * These are to pickup matches that would cause the following
138 * message to go in the wrong direction while doing quick fast
139 * non-matching lookups.
141 if(MyClient(source_p
))
142 target_p
= find_named_client(new);
144 target_p
= find_client(new);
147 if(target_p
->from
== source_p
->from
&& !MyConnect(target_p
))
151 wilds
= (strchr(new, '?') || strchr(new, '*'));
154 * Again, if there are no wild cards involved in the server
155 * name, use the hash lookup
157 if(!target_p
&& wilds
)
159 RB_DLINK_FOREACH(ptr
, global_client_list
.head
)
161 if(match(new, ((struct Client
*) (ptr
->data
))->name
))
163 target_p
= ptr
->data
;
169 if(target_p
&& !IsRegistered(target_p
))
174 if(IsMe(target_p
) || MyClient(target_p
))
178 parv
[server
] = get_id(target_p
, target_p
);
180 sendto_one(target_p
, command
, get_id(source_p
, target_p
),
181 parv
[1], parv
[2], parv
[3], parv
[4], parv
[5], parv
[6], parv
[7], parv
[8]);
183 return (HUNTED_PASS
);
186 if(MyClient(source_p
) || !IsDigit(parv
[server
][0]))
187 sendto_one_numeric(source_p
, ERR_NOSUCHSERVER
,
188 form_str(ERR_NOSUCHSERVER
), parv
[server
]);
189 return (HUNTED_NOSUCH
);
193 * try_connections - scan through configuration and try new connections.
194 * Returns the calendar time when the next call to this
195 * function should be made latest. (No harm done if this
196 * is called earlier or later...)
199 try_connections(void *unused
)
201 struct Client
*client_p
;
202 struct server_conf
*server_p
= NULL
;
203 struct server_conf
*tmp_p
;
206 int connecting
= FALSE
;
210 RB_DLINK_FOREACH(ptr
, server_conf_list
.head
)
214 if(ServerConfIllegal(tmp_p
) || !ServerConfAutoconn(tmp_p
))
217 /* don't allow ssl connections if ssl isn't setup */
218 if(ServerConfSSL(tmp_p
) && (!ssl_ok
|| !get_ssld_count()))
221 cltmp
= tmp_p
->class;
224 * Skip this entry if the use of it is still on hold until
225 * future. Otherwise handle this entry (and set it on hold
226 * until next time). Will reset only hold times, if already
227 * made one successfull connection... [this algorithm is
228 * a bit fuzzy... -- msa >;) ]
230 if(tmp_p
->hold
> rb_current_time())
232 if(next
> tmp_p
->hold
|| next
== 0)
237 confrq
= get_con_freq(cltmp
);
238 tmp_p
->hold
= rb_current_time() + confrq
;
241 * Found a CONNECT config with port specified, scan clients
242 * and see if this server is already connected?
244 client_p
= find_server(NULL
, tmp_p
->name
);
246 if(!client_p
&& (CurrUsers(cltmp
) < MaxUsers(cltmp
)) && !connecting
)
250 /* We connect only one at time... */
254 if((next
> tmp_p
->hold
) || (next
== 0))
258 /* TODO: change this to set active flag to 0 when added to event! --Habeeb */
259 if(GlobalSetOptions
.autoconn
== 0)
265 /* move this connect entry to end.. */
266 rb_dlinkDelete(&server_p
->node
, &server_conf_list
);
267 rb_dlinkAddTail(server_p
, &server_p
->node
, &server_conf_list
);
270 * We used to only print this if serv_connect() actually
271 * suceeded, but since rb_tcp_connect() can call the callback
272 * immediately if there is an error, we were getting error messages
273 * in the wrong order. SO, we just print out the activated line,
274 * and let serv_connect() / serv_connect_callback() print an
275 * error afterwards if it fails.
278 sendto_realops_snomask(SNO_GENERAL
, L_ALL
,
279 "Connection to %s activated",
282 serv_connect(server_p
, 0);
286 check_server(const char *name
, struct Client
*client_p
)
288 struct server_conf
*server_p
= NULL
;
289 struct server_conf
*tmp_p
;
293 s_assert(NULL
!= client_p
);
297 if(!(client_p
->localClient
->passwd
))
300 if(strlen(name
) > HOSTLEN
)
303 RB_DLINK_FOREACH(ptr
, server_conf_list
.head
)
307 if(ServerConfIllegal(tmp_p
))
310 if(!match(tmp_p
->name
, name
))
315 /* XXX: Fix me for IPv6 */
316 /* XXX sockhost is the IPv4 ip as a string */
317 if(match(tmp_p
->host
, client_p
->host
) ||
318 match(tmp_p
->host
, client_p
->sockhost
))
322 if(ServerConfEncrypted(tmp_p
))
324 if(!strcmp(tmp_p
->passwd
, rb_crypt(client_p
->localClient
->passwd
,
331 else if(!strcmp(tmp_p
->passwd
, client_p
->localClient
->passwd
))
342 if(ServerConfSSL(server_p
) && client_p
->localClient
->ssl_ctl
== NULL
)
347 attach_server_conf(client_p
, server_p
);
349 /* clear ZIP/TB if they support but we dont want them */
351 if(!ServerConfCompressed(server_p
))
353 ClearCap(client_p
, CAP_ZIP
);
355 if(!ServerConfTb(server_p
))
356 ClearCap(client_p
, CAP_TB
);
364 * inputs - Client pointer to send to
365 * - int flag of capabilities that this server has
367 * side effects - send the CAPAB line to a server -orabidoo
371 send_capabilities(struct Client
*client_p
, int cap_can_send
)
373 struct Capability
*cap
;
374 char msgbuf
[BUFSIZE
];
380 for (cap
= captab
; cap
->name
; ++cap
)
382 if(cap
->cap
& cap_can_send
)
384 tl
= rb_sprintf(t
, "%s ", cap
->name
);
392 sendto_one(client_p
, "CAPAB :%s", msgbuf
);
397 * input - client to burst to, channel name, list to burst, mode flag
399 * side effects - client is sent a list of +b, +e, or +I modes
402 burst_modes_TS6(struct Client
*client_p
, struct Channel
*chptr
,
403 rb_dlink_list
*list
, char flag
)
412 cur_len
= mlen
= rb_sprintf(buf
, ":%s BMASK %ld %s %c :",
413 me
.id
, (long) chptr
->channelts
, chptr
->chname
, flag
);
416 RB_DLINK_FOREACH(ptr
, list
->head
)
420 tlen
= strlen(banptr
->banstr
) + 1;
423 if(cur_len
+ tlen
> BUFSIZE
- 3)
425 /* the one we're trying to send doesnt fit at all! */
432 /* chop off trailing space and send.. */
434 sendto_one(client_p
, "%s", buf
);
439 rb_sprintf(t
, "%s ", banptr
->banstr
);
444 /* cant ever exit the loop above without having modified buf,
445 * chop off trailing space and send.
448 sendto_one(client_p
, "%s", buf
);
454 * inputs - client (server) to send nick towards
455 * - client to send nick for
457 * side effects - NICK message is sent towards given client_p
460 burst_TS6(struct Client
*client_p
)
462 static char ubuf
[12];
463 struct Client
*target_p
;
464 struct Channel
*chptr
;
465 struct membership
*msptr
;
466 hook_data_client hclientinfo
;
467 hook_data_channel hchaninfo
;
474 struct DictionaryIter iter
;
476 hclientinfo
.client
= hchaninfo
.client
= client_p
;
478 RB_DLINK_FOREACH(ptr
, global_client_list
.head
)
480 target_p
= ptr
->data
;
482 if(!IsPerson(target_p
))
485 send_umode(NULL
, target_p
, 0, 0, ubuf
);
492 if(IsCapable(client_p
, CAP_EUID
))
493 sendto_one(client_p
, ":%s EUID %s %d %ld %s %s %s %s %s %s %s :%s",
494 target_p
->servptr
->id
, target_p
->name
,
495 target_p
->hopcount
+ 1,
496 (long) target_p
->tsinfo
, ubuf
,
497 target_p
->username
, target_p
->host
,
498 IsIPSpoof(target_p
) ? "0" : target_p
->sockhost
,
500 IsDynSpoof(target_p
) ? target_p
->orighost
: "*",
501 EmptyString(target_p
->user
->suser
) ? "*" : target_p
->user
->suser
,
504 sendto_one(client_p
, ":%s UID %s %d %ld %s %s %s %s %s :%s",
505 target_p
->servptr
->id
, target_p
->name
,
506 target_p
->hopcount
+ 1,
507 (long) target_p
->tsinfo
, ubuf
,
508 target_p
->username
, target_p
->host
,
509 IsIPSpoof(target_p
) ? "0" : target_p
->sockhost
,
510 target_p
->id
, target_p
->info
);
512 if(!EmptyString(target_p
->certfp
))
513 sendto_one(client_p
, ":%s ENCAP * CERTFP :%s",
514 use_id(target_p
), target_p
->certfp
);
516 if(!IsCapable(client_p
, CAP_EUID
))
518 if(IsDynSpoof(target_p
))
519 sendto_one(client_p
, ":%s ENCAP * REALHOST %s",
520 use_id(target_p
), target_p
->orighost
);
521 if(!EmptyString(target_p
->user
->suser
))
522 sendto_one(client_p
, ":%s ENCAP * LOGIN %s",
523 use_id(target_p
), target_p
->user
->suser
);
526 DICTIONARY_FOREACH(md
, &iter
, target_p
->user
->metadata
)
528 sendto_one(client_p
, ":%s ENCAP * METADATA %s %s :%s",
529 use_id(target_p
), use_id(target_p
), md
->name
, md
->value
);
532 if(ConfigFileEntry
.burst_away
&& !EmptyString(target_p
->user
->away
))
533 sendto_one(client_p
, ":%s AWAY :%s",
535 target_p
->user
->away
);
537 hclientinfo
.target
= target_p
;
538 call_hook(h_burst_client
, &hclientinfo
);
541 RB_DLINK_FOREACH(ptr
, global_channel_list
.head
)
545 if(*chptr
->chname
!= '#')
548 cur_len
= mlen
= rb_sprintf(buf
, ":%s SJOIN %ld %s %s :", me
.id
,
549 (long) chptr
->channelts
, chptr
->chname
,
550 channel_modes(chptr
, client_p
));
554 RB_DLINK_FOREACH(uptr
, chptr
->members
.head
)
558 tlen
= strlen(use_id(msptr
->client_p
)) + 1;
568 if(cur_len
+ tlen
>= BUFSIZE
- 3)
571 sendto_one(client_p
, "%s", buf
);
576 rb_sprintf(t
, "%s%s ", find_channel_status(msptr
, 1),
577 use_id(msptr
->client_p
));
583 if (rb_dlink_list_length(&chptr
->members
) > 0)
585 /* remove trailing space */
588 sendto_one(client_p
, "%s", buf
);
590 if(rb_dlink_list_length(&chptr
->banlist
) > 0)
591 burst_modes_TS6(client_p
, chptr
, &chptr
->banlist
, 'b');
593 if(IsCapable(client_p
, CAP_EX
) &&
594 rb_dlink_list_length(&chptr
->exceptlist
) > 0)
595 burst_modes_TS6(client_p
, chptr
, &chptr
->exceptlist
, 'e');
597 if(IsCapable(client_p
, CAP_IE
) &&
598 rb_dlink_list_length(&chptr
->invexlist
) > 0)
599 burst_modes_TS6(client_p
, chptr
, &chptr
->invexlist
, 'I');
601 if(rb_dlink_list_length(&chptr
->quietlist
) > 0)
602 burst_modes_TS6(client_p
, chptr
, &chptr
->quietlist
, 'q');
604 if(IsCapable(client_p
, CAP_TB
) && chptr
->topic
!= NULL
)
605 sendto_one(client_p
, ":%s TB %s %ld %s%s:%s",
606 me
.id
, chptr
->chname
, (long) chptr
->topic_time
,
607 ConfigChannel
.burst_topicwho
? chptr
->topic_info
: "",
608 ConfigChannel
.burst_topicwho
? " " : "",
611 hchaninfo
.chptr
= chptr
;
612 call_hook(h_burst_channel
, &hchaninfo
);
615 hclientinfo
.target
= NULL
;
616 call_hook(h_burst_finished
, &hclientinfo
);
620 * show_capabilities - show current server capabilities
622 * inputs - pointer to an struct Client
623 * output - pointer to static string
624 * side effects - build up string representing capabilities of server listed
627 show_capabilities(struct Client
*target_p
)
629 static char msgbuf
[BUFSIZE
];
630 struct Capability
*cap
;
633 rb_strlcpy(msgbuf
, " TS6", sizeof(msgbuf
));
636 rb_strlcat(msgbuf
, " SSL", sizeof(msgbuf
));
638 if(!IsServer(target_p
) || !target_p
->serv
->caps
) /* short circuit if no caps */
641 for (cap
= captab
; cap
->cap
; ++cap
)
643 if(cap
->cap
& target_p
->serv
->caps
)
644 rb_snprintf_append(msgbuf
, sizeof(msgbuf
), " %s", cap
->name
);
653 * inputs - pointer to a struct Client
658 server_estab(struct Client
*client_p
)
660 struct Client
*target_p
;
661 struct server_conf
*server_p
;
662 hook_data_client hdata
;
665 char note
[HOSTLEN
+ 15];
667 s_assert(NULL
!= client_p
);
671 host
= client_p
->name
;
673 if((server_p
= client_p
->localClient
->att_sconf
) == NULL
)
675 /* This shouldn't happen, better tell the ops... -A1kmm */
676 sendto_realops_snomask(SNO_GENERAL
, is_remote_connect(client_p
) ? L_NETWIDE
: L_ALL
,
677 "Warning: Lost connect{} block for server %s!", host
);
678 return exit_client(client_p
, client_p
, client_p
, "Lost connect{} block!");
681 /* We shouldn't have to check this, it should already done before
682 * server_estab is called. -A1kmm
684 if(client_p
->localClient
->passwd
)
686 memset(client_p
->localClient
->passwd
, 0, strlen(client_p
->localClient
->passwd
));
687 rb_free(client_p
->localClient
->passwd
);
688 client_p
->localClient
->passwd
= NULL
;
691 /* Its got identd , since its a server */
694 /* If there is something in the serv_list, it might be this
695 * connecting server..
697 if(!ServerInfo
.hub
&& serv_list
.head
)
699 if(client_p
!= serv_list
.head
->data
|| serv_list
.head
->next
)
701 ServerStats
.is_ref
++;
702 sendto_one(client_p
, "ERROR :I'm a leaf not a hub");
703 return exit_client(client_p
, client_p
, client_p
, "I'm a leaf");
707 if(IsUnknown(client_p
))
710 * jdc -- 1. Use EmptyString(), not [0] index reference.
711 * 2. Check ->spasswd, not ->passwd.
713 if(!EmptyString(server_p
->spasswd
))
715 sendto_one(client_p
, "PASS %s TS %d :%s",
716 server_p
->spasswd
, TS_CURRENT
, me
.id
);
719 /* pass info to new server */
720 send_capabilities(client_p
, default_server_capabs
721 | (ServerConfCompressed(server_p
) ? CAP_ZIP_SUPPORTED
: 0)
722 | (ServerConfTb(server_p
) ? CAP_TB
: 0));
724 sendto_one(client_p
, "SERVER %s 1 :%s%s",
726 ConfigServerHide
.hidden
? "(H) " : "",
727 (me
.info
[0]) ? (me
.info
) : "IRCers United");
730 if(!rb_set_buffers(client_p
->localClient
->F
, READBUF_SIZE
))
731 ilog_error("rb_set_buffers failed for server");
733 /* Enable compression now */
734 if(IsCapable(client_p
, CAP_ZIP
))
736 start_zlib_session(client_p
);
738 sendto_one(client_p
, "SVINFO %d %d 0 :%ld", TS_CURRENT
, TS_MIN
, (long int)rb_current_time());
740 client_p
->servptr
= &me
;
742 if(IsAnyDead(client_p
))
743 return CLIENT_EXITED
;
747 /* Update the capability combination usage counts */
748 set_chcap_usage_counts(client_p
);
750 rb_dlinkAdd(client_p
, &client_p
->lnode
, &me
.serv
->servers
);
751 rb_dlinkMoveNode(&client_p
->localClient
->tnode
, &unknown_list
, &serv_list
);
752 rb_dlinkAddTailAlloc(client_p
, &global_serv_list
);
755 add_to_id_hash(client_p
->id
, client_p
);
757 add_to_client_hash(client_p
->name
, client_p
);
758 /* doesnt duplicate client_p->serv if allocated this struct already */
759 make_server(client_p
);
761 client_p
->serv
->caps
= client_p
->localClient
->caps
;
763 if(client_p
->localClient
->fullcaps
)
765 client_p
->serv
->fullcaps
= rb_strdup(client_p
->localClient
->fullcaps
);
766 rb_free(client_p
->localClient
->fullcaps
);
767 client_p
->localClient
->fullcaps
= NULL
;
770 client_p
->serv
->nameinfo
= scache_connect(client_p
->name
, client_p
->info
, IsHidden(client_p
));
771 client_p
->localClient
->firsttime
= rb_current_time();
772 /* fixing eob timings.. -gnp */
774 if((rb_dlink_list_length(&lclient_list
) + rb_dlink_list_length(&serv_list
)) >
775 (unsigned long)MaxConnectionCount
)
776 MaxConnectionCount
= rb_dlink_list_length(&lclient_list
) +
777 rb_dlink_list_length(&serv_list
);
779 /* Show the real host/IP to admins */
780 sendto_realops_snomask(SNO_GENERAL
, L_ALL
,
781 "Link with %s established: (%s) link",
783 show_capabilities(client_p
));
785 ilog(L_SERVER
, "Link with %s established: (%s) link",
786 log_client_name(client_p
, SHOW_IP
), show_capabilities(client_p
));
789 hdata
.target
= client_p
;
790 call_hook(h_server_introduced
, &hdata
);
792 rb_snprintf(note
, sizeof(note
), "Server: %s", client_p
->name
);
793 rb_note(client_p
->localClient
->F
, note
);
796 ** Old sendto_serv_but_one() call removed because we now
797 ** need to send different names to different servers
798 ** (domain name matching) Send new server to other servers.
800 RB_DLINK_FOREACH(ptr
, serv_list
.head
)
802 target_p
= ptr
->data
;
804 if(target_p
== client_p
)
807 if(has_id(target_p
) && has_id(client_p
))
809 sendto_one(target_p
, ":%s SID %s 2 %s :%s%s",
810 me
.id
, client_p
->name
, client_p
->id
,
811 IsHidden(client_p
) ? "(H) " : "", client_p
->info
);
813 if(IsCapable(target_p
, CAP_ENCAP
) &&
814 !EmptyString(client_p
->serv
->fullcaps
))
815 sendto_one(target_p
, ":%s ENCAP * GCAP :%s",
816 client_p
->id
, client_p
->serv
->fullcaps
);
820 sendto_one(target_p
, ":%s SERVER %s 2 :%s%s",
821 me
.name
, client_p
->name
,
822 IsHidden(client_p
) ? "(H) " : "", client_p
->info
);
824 if(IsCapable(target_p
, CAP_ENCAP
) &&
825 !EmptyString(client_p
->serv
->fullcaps
))
826 sendto_one(target_p
, ":%s ENCAP * GCAP :%s",
827 client_p
->name
, client_p
->serv
->fullcaps
);
832 ** Pass on my client information to the new server
834 ** First, pass only servers (idea is that if the link gets
835 ** cancelled beacause the server was already there,
836 ** there are no NICK's to be cancelled...). Of course,
837 ** if cancellation occurs, all this info is sent anyway,
838 ** and I guess the link dies when a read is attempted...? --msa
840 ** Note: Link cancellation to occur at this point means
841 ** that at least two servers from my fragment are building
842 ** up connection this other fragment at the same time, it's
843 ** a race condition, not the normal way of operation...
845 ** ALSO NOTE: using the get_client_name for server names--
846 ** see previous *WARNING*!!! (Also, original inpath
849 RB_DLINK_FOREACH(ptr
, global_serv_list
.head
)
851 target_p
= ptr
->data
;
853 /* target_p->from == target_p for target_p == client_p */
854 if(IsMe(target_p
) || target_p
->from
== client_p
)
857 /* presumption, if target has an id, so does its uplink */
858 if(has_id(client_p
) && has_id(target_p
))
859 sendto_one(client_p
, ":%s SID %s %d %s :%s%s",
860 target_p
->servptr
->id
, target_p
->name
,
861 target_p
->hopcount
+ 1, target_p
->id
,
862 IsHidden(target_p
) ? "(H) " : "", target_p
->info
);
864 sendto_one(client_p
, ":%s SERVER %s %d :%s%s",
865 target_p
->servptr
->name
,
866 target_p
->name
, target_p
->hopcount
+ 1,
867 IsHidden(target_p
) ? "(H) " : "", target_p
->info
);
869 if(IsCapable(client_p
, CAP_ENCAP
) &&
870 !EmptyString(target_p
->serv
->fullcaps
))
871 sendto_one(client_p
, ":%s ENCAP * GCAP :%s",
872 get_id(target_p
, client_p
),
873 target_p
->serv
->fullcaps
);
878 /* Always send a PING after connect burst is done */
879 sendto_one(client_p
, "PING :%s", get_id(&me
, client_p
));
881 free_pre_client(client_p
);
883 send_pop_queue(client_p
);
889 * New server connection code
890 * Based upon the stuff floating about in s_bsd.c
895 serv_connect_resolved(struct Client
*client_p
)
897 struct rb_sockaddr_storage myipnum
;
898 char vhoststr
[HOSTIPLEN
];
899 struct server_conf
*server_p
;
902 if((server_p
= client_p
->localClient
->att_sconf
) == NULL
)
904 sendto_realops_snomask(SNO_GENERAL
, is_remote_connect(client_p
) ? L_NETWIDE
: L_ALL
, "Lost connect{} block for %s",
906 exit_client(client_p
, client_p
, &me
, "Lost connect{} block");
911 if(client_p
->localClient
->ip
.ss_family
== AF_INET6
)
912 port
= ntohs(((struct sockaddr_in6
*)&client_p
->localClient
->ip
)->sin6_port
);
915 port
= ntohs(((struct sockaddr_in
*)&client_p
->localClient
->ip
)->sin_port
);
917 if(ServerConfVhosted(server_p
))
919 memcpy(&myipnum
, &server_p
->my_ipnum
, sizeof(myipnum
));
920 ((struct sockaddr_in
*)&myipnum
)->sin_port
= 0;
921 myipnum
.ss_family
= server_p
->aftype
;
924 else if(server_p
->aftype
== AF_INET
&& ServerInfo
.specific_ipv4_vhost
)
926 memcpy(&myipnum
, &ServerInfo
.ip
, sizeof(myipnum
));
927 ((struct sockaddr_in
*)&myipnum
)->sin_port
= 0;
928 myipnum
.ss_family
= AF_INET
;
929 SET_SS_LEN(&myipnum
, sizeof(struct sockaddr_in
));
933 else if((server_p
->aftype
== AF_INET6
) && ServerInfo
.specific_ipv6_vhost
)
935 memcpy(&myipnum
, &ServerInfo
.ip6
, sizeof(myipnum
));
936 ((struct sockaddr_in6
*)&myipnum
)->sin6_port
= 0;
937 myipnum
.ss_family
= AF_INET6
;
938 SET_SS_LEN(&myipnum
, sizeof(struct sockaddr_in6
));
944 ilog(L_SERVER
, "Connecting to %s[%s] port %d (%s)", client_p
->name
, client_p
->sockhost
, port
,
946 server_p
->aftype
== AF_INET6
? "IPv6" :
948 (server_p
->aftype
== AF_INET
? "IPv4" : "?"));
950 if(ServerConfSSL(server_p
))
952 rb_connect_tcp(client_p
->localClient
->F
, (struct sockaddr
*)&client_p
->localClient
->ip
,
953 NULL
, 0, serv_connect_ssl_callback
,
954 client_p
, ConfigFileEntry
.connect_timeout
);
957 rb_connect_tcp(client_p
->localClient
->F
, (struct sockaddr
*)&client_p
->localClient
->ip
,
958 NULL
, 0, serv_connect_callback
,
959 client_p
, ConfigFileEntry
.connect_timeout
);
964 rb_inet_ntop_sock((struct sockaddr
*)&myipnum
, vhoststr
, sizeof vhoststr
);
965 ilog(L_SERVER
, "Connecting to %s[%s] port %d (%s) (vhost %s)", client_p
->name
, client_p
->sockhost
, port
,
967 server_p
->aftype
== AF_INET6
? "IPv6" :
969 (server_p
->aftype
== AF_INET
? "IPv4" : "?"), vhoststr
);
972 if(ServerConfSSL(server_p
))
973 rb_connect_tcp(client_p
->localClient
->F
, (struct sockaddr
*)&client_p
->localClient
->ip
,
974 (struct sockaddr
*) &myipnum
,
975 GET_SS_LEN(&myipnum
), serv_connect_ssl_callback
, client_p
,
976 ConfigFileEntry
.connect_timeout
);
978 rb_connect_tcp(client_p
->localClient
->F
, (struct sockaddr
*)&client_p
->localClient
->ip
,
979 (struct sockaddr
*) &myipnum
,
980 GET_SS_LEN(&myipnum
), serv_connect_callback
, client_p
,
981 ConfigFileEntry
.connect_timeout
);
987 serv_connect_dns_callback(void *vptr
, struct DNSReply
*reply
)
989 struct Client
*client_p
= vptr
;
992 rb_free(client_p
->localClient
->dnsquery
);
993 client_p
->localClient
->dnsquery
= NULL
;
997 sendto_realops_snomask(SNO_GENERAL
, is_remote_connect(client_p
) ? L_NETWIDE
: L_ALL
, "Cannot resolve hostname for %s",
999 ilog(L_SERVER
, "Cannot resolve hostname for %s",
1000 log_client_name(client_p
, HIDE_IP
));
1001 exit_client(client_p
, client_p
, &me
, "Cannot resolve hostname");
1005 if(reply
->addr
.ss_family
== AF_INET6
)
1006 port
= ((struct sockaddr_in6
*)&client_p
->localClient
->ip
)->sin6_port
;
1009 port
= ((struct sockaddr_in
*)&client_p
->localClient
->ip
)->sin_port
;
1010 memcpy(&client_p
->localClient
->ip
, &reply
->addr
, sizeof(client_p
->localClient
->ip
));
1012 if(reply
->addr
.ss_family
== AF_INET6
)
1013 ((struct sockaddr_in6
*)&client_p
->localClient
->ip
)->sin6_port
= port
;
1016 ((struct sockaddr_in
*)&client_p
->localClient
->ip
)->sin_port
= port
;
1017 /* Set sockhost properly now -- jilles */
1018 rb_inet_ntop_sock((struct sockaddr
*)&client_p
->localClient
->ip
,
1019 client_p
->sockhost
, sizeof client_p
->sockhost
);
1020 serv_connect_resolved(client_p
);
1024 * serv_connect() - initiate a server connection
1026 * inputs - pointer to conf
1027 * - pointer to client doing the connet
1031 * This code initiates a connection to a server. It first checks to make
1032 * sure the given server exists. If this is the case, it creates a socket,
1033 * creates a client, saves the socket information in the client, and
1034 * initiates a connection to the server through rb_connect_tcp(). The
1035 * completion of this goes through serv_completed_connection().
1037 * We return 1 if the connection is attempted, since we don't know whether
1038 * it suceeded or not, and 0 if it fails in here somewhere.
1041 serv_connect(struct server_conf
*server_p
, struct Client
*by
)
1043 struct Client
*client_p
;
1044 struct rb_sockaddr_storage theiripnum
;
1046 char note
[HOSTLEN
+ 10];
1048 s_assert(server_p
!= NULL
);
1049 if(server_p
== NULL
)
1053 * Make sure this server isn't already connected
1055 if((client_p
= find_server(NULL
, server_p
->name
)))
1057 sendto_realops_snomask(SNO_GENERAL
, L_ALL
,
1058 "Server %s already present from %s",
1059 server_p
->name
, client_p
->name
);
1060 if(by
&& IsPerson(by
) && !MyClient(by
))
1061 sendto_one_notice(by
, ":Server %s already present from %s",
1062 server_p
->name
, client_p
->name
);
1066 /* create a socket for the server connection */
1067 if((F
= rb_socket(server_p
->aftype
, SOCK_STREAM
, 0, NULL
)) == NULL
)
1069 ilog_error("opening a stream socket");
1073 rb_snprintf(note
, sizeof note
, "Server: %s", server_p
->name
);
1076 /* Create a local client */
1077 client_p
= make_client(NULL
);
1079 /* Copy in the server, hostname, fd
1080 * The sockhost may be a hostname, this will be corrected later
1083 rb_strlcpy(client_p
->name
, server_p
->name
, sizeof(client_p
->name
));
1084 rb_strlcpy(client_p
->host
, server_p
->host
, sizeof(client_p
->host
));
1085 rb_strlcpy(client_p
->sockhost
, server_p
->host
, sizeof(client_p
->sockhost
));
1086 client_p
->localClient
->F
= F
;
1087 add_to_cli_fd_hash(client_p
);
1090 * Set up the initial server evilness, ripped straight from
1091 * connect_server(), so don't blame me for it being evil.
1095 if(!rb_set_buffers(client_p
->localClient
->F
, READBUF_SIZE
))
1097 ilog_error("setting the buffer size for a server connection");
1101 * Attach config entries to client here rather than in
1102 * serv_connect_callback(). This to avoid null pointer references.
1104 attach_server_conf(client_p
, server_p
);
1107 * at this point we have a connection in progress and C/N lines
1108 * attached to the client, the socket info should be saved in the
1109 * client and it should either be resolved or have a valid address.
1111 * The socket has been connected or connect is in progress.
1113 make_server(client_p
);
1114 if(by
&& IsPerson(by
))
1116 strcpy(client_p
->serv
->by
, by
->name
);
1117 if(client_p
->serv
->user
)
1118 free_user(client_p
->serv
->user
, NULL
);
1119 client_p
->serv
->user
= by
->user
;
1124 strcpy(client_p
->serv
->by
, "AutoConn.");
1125 if(client_p
->serv
->user
)
1126 free_user(client_p
->serv
->user
, NULL
);
1127 client_p
->serv
->user
= NULL
;
1129 SetConnecting(client_p
);
1130 rb_dlinkAddTail(client_p
, &client_p
->node
, &global_client_list
);
1132 if (rb_inet_pton_sock(server_p
->host
, (struct sockaddr
*)&theiripnum
) > 0)
1134 memcpy(&client_p
->localClient
->ip
, &theiripnum
, sizeof(client_p
->localClient
->ip
));
1136 if(theiripnum
.ss_family
== AF_INET6
)
1137 ((struct sockaddr_in6
*)&client_p
->localClient
->ip
)->sin6_port
= htons(server_p
->port
);
1140 ((struct sockaddr_in
*)&client_p
->localClient
->ip
)->sin_port
= htons(server_p
->port
);
1142 return serv_connect_resolved(client_p
);
1147 if(theiripnum
.ss_family
== AF_INET6
)
1148 ((struct sockaddr_in6
*)&client_p
->localClient
->ip
)->sin6_port
= htons(server_p
->port
);
1151 ((struct sockaddr_in
*)&client_p
->localClient
->ip
)->sin_port
= htons(server_p
->port
);
1153 client_p
->localClient
->dnsquery
= rb_malloc(sizeof(struct DNSQuery
));
1154 client_p
->localClient
->dnsquery
->ptr
= client_p
;
1155 client_p
->localClient
->dnsquery
->callback
= serv_connect_dns_callback
;
1156 gethost_byname_type(server_p
->host
, client_p
->localClient
->dnsquery
,
1158 server_p
->aftype
== AF_INET6
? T_AAAA
:
1166 serv_connect_ssl_callback(rb_fde_t
*F
, int status
, void *data
)
1168 struct Client
*client_p
= data
;
1170 rb_connect_sockaddr(F
, (struct sockaddr
*)&client_p
->localClient
->ip
, sizeof(client_p
->localClient
->ip
));
1173 /* Print error message, just like non-SSL. */
1174 serv_connect_callback(F
, status
, data
);
1177 if(rb_socketpair(AF_UNIX
, SOCK_STREAM
, 0, &xF
[0], &xF
[1], "Outgoing ssld connection") == -1)
1179 ilog_error("rb_socketpair failed for server");
1180 serv_connect_callback(F
, RB_ERROR
, data
);
1184 del_from_cli_fd_hash(client_p
);
1185 client_p
->localClient
->F
= xF
[0];
1186 add_to_cli_fd_hash(client_p
);
1188 client_p
->localClient
->ssl_ctl
= start_ssld_connect(F
, xF
[1], rb_get_fd(xF
[0]));
1190 serv_connect_callback(client_p
->localClient
->F
, RB_OK
, client_p
);
1194 * serv_connect_callback() - complete a server connection.
1196 * This routine is called after the server connection attempt has
1197 * completed. If unsucessful, an error is sent to ops and the client
1198 * is closed. If sucessful, it goes through the initialisation/check
1199 * procedures, the capabilities are sent, and the socket is then
1200 * marked for reading.
1203 serv_connect_callback(rb_fde_t
*F
, int status
, void *data
)
1205 struct Client
*client_p
= data
;
1206 struct server_conf
*server_p
;
1209 /* First, make sure its a real client! */
1210 s_assert(client_p
!= NULL
);
1211 s_assert(client_p
->localClient
->F
== F
);
1213 if(client_p
== NULL
)
1216 /* while we were waiting for the callback, its possible this already
1219 if(find_server(NULL
, client_p
->name
) != NULL
)
1221 exit_client(client_p
, client_p
, &me
, "Server Exists");
1225 if(client_p
->localClient
->ssl_ctl
== NULL
)
1226 rb_connect_sockaddr(F
, (struct sockaddr
*)&client_p
->localClient
->ip
, sizeof(client_p
->localClient
->ip
));
1228 /* Check the status */
1231 /* COMM_ERR_TIMEOUT wont have an errno associated with it,
1232 * the others will.. --fl
1234 if(status
== RB_ERR_TIMEOUT
)
1236 sendto_realops_snomask(SNO_GENERAL
, is_remote_connect(client_p
) ? L_NETWIDE
: L_ALL
,
1237 "Error connecting to %s[%s]: %s",
1241 ilog(L_SERVER
, "Error connecting to %s[%s]: %s",
1242 client_p
->name
, client_p
->sockhost
,
1247 errstr
= strerror(rb_get_sockerr(F
));
1248 sendto_realops_snomask(SNO_GENERAL
, is_remote_connect(client_p
) ? L_NETWIDE
: L_ALL
,
1249 "Error connecting to %s[%s]: %s (%s)",
1252 rb_errstr(status
), errstr
);
1253 ilog(L_SERVER
, "Error connecting to %s[%s]: %s (%s)",
1254 client_p
->name
, client_p
->sockhost
,
1255 rb_errstr(status
), errstr
);
1258 exit_client(client_p
, client_p
, &me
, rb_errstr(status
));
1262 /* COMM_OK, so continue the connection procedure */
1263 /* Get the C/N lines */
1264 if((server_p
= client_p
->localClient
->att_sconf
) == NULL
)
1266 sendto_realops_snomask(SNO_GENERAL
, is_remote_connect(client_p
) ? L_NETWIDE
: L_ALL
, "Lost connect{} block for %s",
1268 exit_client(client_p
, client_p
, &me
, "Lost connect{} block");
1272 /* Next, send the initial handshake */
1273 SetHandshake(client_p
);
1275 if(!EmptyString(server_p
->spasswd
))
1277 sendto_one(client_p
, "PASS %s TS %d :%s",
1278 server_p
->spasswd
, TS_CURRENT
, me
.id
);
1281 /* pass my info to the new server */
1282 send_capabilities(client_p
, default_server_capabs
1283 | (ServerConfCompressed(server_p
) ? CAP_ZIP_SUPPORTED
: 0)
1284 | (ServerConfTb(server_p
) ? CAP_TB
: 0));
1286 sendto_one(client_p
, "SERVER %s 1 :%s%s",
1288 ConfigServerHide
.hidden
? "(H) " : "", me
.info
);
1291 * If we've been marked dead because a send failed, just exit
1292 * here now and save everyone the trouble of us ever existing.
1294 if(IsAnyDead(client_p
))
1296 sendto_realops_snomask(SNO_GENERAL
, is_remote_connect(client_p
) ? L_NETWIDE
: L_ALL
,
1297 "%s went dead during handshake", client_p
->name
);
1298 exit_client(client_p
, client_p
, &me
, "Went dead during handshake");
1302 /* don't move to serv_list yet -- we haven't sent a burst! */
1304 /* If we get here, we're ok, so lets start reading some data */
1305 read_packet(F
, client_p
);