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 ADD %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 DICTIONARY_FOREACH(md
, &iter
, chptr
->metadata
)
592 /* don't bother bursting +J metadata */
593 if(!(md
->name
[0] == 'K'))
594 sendto_one(&me
, ":%s ENCAP * METADATA ADD %s %s :%s",
595 use_id(target_p
), use_id(target_p
), md
->name
, md
->value
);
598 if(rb_dlink_list_length(&chptr
->banlist
) > 0)
599 burst_modes_TS6(client_p
, chptr
, &chptr
->banlist
, 'b');
601 if(IsCapable(client_p
, CAP_EX
) &&
602 rb_dlink_list_length(&chptr
->exceptlist
) > 0)
603 burst_modes_TS6(client_p
, chptr
, &chptr
->exceptlist
, 'e');
605 if(IsCapable(client_p
, CAP_IE
) &&
606 rb_dlink_list_length(&chptr
->invexlist
) > 0)
607 burst_modes_TS6(client_p
, chptr
, &chptr
->invexlist
, 'I');
609 if(rb_dlink_list_length(&chptr
->quietlist
) > 0)
610 burst_modes_TS6(client_p
, chptr
, &chptr
->quietlist
, 'q');
612 if(IsCapable(client_p
, CAP_TB
) && chptr
->topic
!= NULL
)
613 sendto_one(client_p
, ":%s TB %s %ld %s%s:%s",
614 me
.id
, chptr
->chname
, (long) chptr
->topic_time
,
615 ConfigChannel
.burst_topicwho
? chptr
->topic_info
: "",
616 ConfigChannel
.burst_topicwho
? " " : "",
619 hchaninfo
.chptr
= chptr
;
620 call_hook(h_burst_channel
, &hchaninfo
);
623 hclientinfo
.target
= NULL
;
624 call_hook(h_burst_finished
, &hclientinfo
);
628 * show_capabilities - show current server capabilities
630 * inputs - pointer to an struct Client
631 * output - pointer to static string
632 * side effects - build up string representing capabilities of server listed
635 show_capabilities(struct Client
*target_p
)
637 static char msgbuf
[BUFSIZE
];
638 struct Capability
*cap
;
641 rb_strlcpy(msgbuf
, " TS6", sizeof(msgbuf
));
644 rb_strlcat(msgbuf
, " SSL", sizeof(msgbuf
));
646 if(!IsServer(target_p
) || !target_p
->serv
->caps
) /* short circuit if no caps */
649 for (cap
= captab
; cap
->cap
; ++cap
)
651 if(cap
->cap
& target_p
->serv
->caps
)
652 rb_snprintf_append(msgbuf
, sizeof(msgbuf
), " %s", cap
->name
);
661 * inputs - pointer to a struct Client
666 server_estab(struct Client
*client_p
)
668 struct Client
*target_p
;
669 struct server_conf
*server_p
;
670 hook_data_client hdata
;
673 char note
[HOSTLEN
+ 15];
675 s_assert(NULL
!= client_p
);
679 host
= client_p
->name
;
681 if((server_p
= client_p
->localClient
->att_sconf
) == NULL
)
683 /* This shouldn't happen, better tell the ops... -A1kmm */
684 sendto_realops_snomask(SNO_GENERAL
, is_remote_connect(client_p
) ? L_NETWIDE
: L_ALL
,
685 "Warning: Lost connect{} block for server %s!", host
);
686 return exit_client(client_p
, client_p
, client_p
, "Lost connect{} block!");
689 /* We shouldn't have to check this, it should already done before
690 * server_estab is called. -A1kmm
692 if(client_p
->localClient
->passwd
)
694 memset(client_p
->localClient
->passwd
, 0, strlen(client_p
->localClient
->passwd
));
695 rb_free(client_p
->localClient
->passwd
);
696 client_p
->localClient
->passwd
= NULL
;
699 /* Its got identd , since its a server */
702 /* If there is something in the serv_list, it might be this
703 * connecting server..
705 if(!ServerInfo
.hub
&& serv_list
.head
)
707 if(client_p
!= serv_list
.head
->data
|| serv_list
.head
->next
)
709 ServerStats
.is_ref
++;
710 sendto_one(client_p
, "ERROR :I'm a leaf not a hub");
711 return exit_client(client_p
, client_p
, client_p
, "I'm a leaf");
715 if(IsUnknown(client_p
))
718 * jdc -- 1. Use EmptyString(), not [0] index reference.
719 * 2. Check ->spasswd, not ->passwd.
721 if(!EmptyString(server_p
->spasswd
))
723 sendto_one(client_p
, "PASS %s TS %d :%s",
724 server_p
->spasswd
, TS_CURRENT
, me
.id
);
727 /* pass info to new server */
728 send_capabilities(client_p
, default_server_capabs
729 | (ServerConfCompressed(server_p
) ? CAP_ZIP_SUPPORTED
: 0)
730 | (ServerConfTb(server_p
) ? CAP_TB
: 0));
732 sendto_one(client_p
, "SERVER %s 1 :%s%s",
734 ConfigServerHide
.hidden
? "(H) " : "",
735 (me
.info
[0]) ? (me
.info
) : "IRCers United");
738 if(!rb_set_buffers(client_p
->localClient
->F
, READBUF_SIZE
))
739 ilog_error("rb_set_buffers failed for server");
741 /* Enable compression now */
742 if(IsCapable(client_p
, CAP_ZIP
))
744 start_zlib_session(client_p
);
746 sendto_one(client_p
, "SVINFO %d %d 0 :%ld", TS_CURRENT
, TS_MIN
, (long int)rb_current_time());
748 client_p
->servptr
= &me
;
750 if(IsAnyDead(client_p
))
751 return CLIENT_EXITED
;
755 /* Update the capability combination usage counts */
756 set_chcap_usage_counts(client_p
);
758 rb_dlinkAdd(client_p
, &client_p
->lnode
, &me
.serv
->servers
);
759 rb_dlinkMoveNode(&client_p
->localClient
->tnode
, &unknown_list
, &serv_list
);
760 rb_dlinkAddTailAlloc(client_p
, &global_serv_list
);
763 add_to_id_hash(client_p
->id
, client_p
);
765 add_to_client_hash(client_p
->name
, client_p
);
766 /* doesnt duplicate client_p->serv if allocated this struct already */
767 make_server(client_p
);
769 client_p
->serv
->caps
= client_p
->localClient
->caps
;
771 if(client_p
->localClient
->fullcaps
)
773 client_p
->serv
->fullcaps
= rb_strdup(client_p
->localClient
->fullcaps
);
774 rb_free(client_p
->localClient
->fullcaps
);
775 client_p
->localClient
->fullcaps
= NULL
;
778 client_p
->serv
->nameinfo
= scache_connect(client_p
->name
, client_p
->info
, IsHidden(client_p
));
779 client_p
->localClient
->firsttime
= rb_current_time();
780 /* fixing eob timings.. -gnp */
782 if((rb_dlink_list_length(&lclient_list
) + rb_dlink_list_length(&serv_list
)) >
783 (unsigned long)MaxConnectionCount
)
784 MaxConnectionCount
= rb_dlink_list_length(&lclient_list
) +
785 rb_dlink_list_length(&serv_list
);
787 /* Show the real host/IP to admins */
788 sendto_realops_snomask(SNO_GENERAL
, L_ALL
,
789 "Link with %s established: (%s) link",
791 show_capabilities(client_p
));
793 ilog(L_SERVER
, "Link with %s established: (%s) link",
794 log_client_name(client_p
, SHOW_IP
), show_capabilities(client_p
));
797 hdata
.target
= client_p
;
798 call_hook(h_server_introduced
, &hdata
);
800 rb_snprintf(note
, sizeof(note
), "Server: %s", client_p
->name
);
801 rb_note(client_p
->localClient
->F
, note
);
804 ** Old sendto_serv_but_one() call removed because we now
805 ** need to send different names to different servers
806 ** (domain name matching) Send new server to other servers.
808 RB_DLINK_FOREACH(ptr
, serv_list
.head
)
810 target_p
= ptr
->data
;
812 if(target_p
== client_p
)
815 if(has_id(target_p
) && has_id(client_p
))
817 sendto_one(target_p
, ":%s SID %s 2 %s :%s%s",
818 me
.id
, client_p
->name
, client_p
->id
,
819 IsHidden(client_p
) ? "(H) " : "", client_p
->info
);
821 if(IsCapable(target_p
, CAP_ENCAP
) &&
822 !EmptyString(client_p
->serv
->fullcaps
))
823 sendto_one(target_p
, ":%s ENCAP * GCAP :%s",
824 client_p
->id
, client_p
->serv
->fullcaps
);
828 sendto_one(target_p
, ":%s SERVER %s 2 :%s%s",
829 me
.name
, client_p
->name
,
830 IsHidden(client_p
) ? "(H) " : "", client_p
->info
);
832 if(IsCapable(target_p
, CAP_ENCAP
) &&
833 !EmptyString(client_p
->serv
->fullcaps
))
834 sendto_one(target_p
, ":%s ENCAP * GCAP :%s",
835 client_p
->name
, client_p
->serv
->fullcaps
);
840 ** Pass on my client information to the new server
842 ** First, pass only servers (idea is that if the link gets
843 ** cancelled beacause the server was already there,
844 ** there are no NICK's to be cancelled...). Of course,
845 ** if cancellation occurs, all this info is sent anyway,
846 ** and I guess the link dies when a read is attempted...? --msa
848 ** Note: Link cancellation to occur at this point means
849 ** that at least two servers from my fragment are building
850 ** up connection this other fragment at the same time, it's
851 ** a race condition, not the normal way of operation...
853 ** ALSO NOTE: using the get_client_name for server names--
854 ** see previous *WARNING*!!! (Also, original inpath
857 RB_DLINK_FOREACH(ptr
, global_serv_list
.head
)
859 target_p
= ptr
->data
;
861 /* target_p->from == target_p for target_p == client_p */
862 if(IsMe(target_p
) || target_p
->from
== client_p
)
865 /* presumption, if target has an id, so does its uplink */
866 if(has_id(client_p
) && has_id(target_p
))
867 sendto_one(client_p
, ":%s SID %s %d %s :%s%s",
868 target_p
->servptr
->id
, target_p
->name
,
869 target_p
->hopcount
+ 1, target_p
->id
,
870 IsHidden(target_p
) ? "(H) " : "", target_p
->info
);
872 sendto_one(client_p
, ":%s SERVER %s %d :%s%s",
873 target_p
->servptr
->name
,
874 target_p
->name
, target_p
->hopcount
+ 1,
875 IsHidden(target_p
) ? "(H) " : "", target_p
->info
);
877 if(IsCapable(client_p
, CAP_ENCAP
) &&
878 !EmptyString(target_p
->serv
->fullcaps
))
879 sendto_one(client_p
, ":%s ENCAP * GCAP :%s",
880 get_id(target_p
, client_p
),
881 target_p
->serv
->fullcaps
);
886 /* Always send a PING after connect burst is done */
887 sendto_one(client_p
, "PING :%s", get_id(&me
, client_p
));
889 free_pre_client(client_p
);
891 send_pop_queue(client_p
);
897 * New server connection code
898 * Based upon the stuff floating about in s_bsd.c
903 serv_connect_resolved(struct Client
*client_p
)
905 struct rb_sockaddr_storage myipnum
;
906 char vhoststr
[HOSTIPLEN
];
907 struct server_conf
*server_p
;
910 if((server_p
= client_p
->localClient
->att_sconf
) == NULL
)
912 sendto_realops_snomask(SNO_GENERAL
, is_remote_connect(client_p
) ? L_NETWIDE
: L_ALL
, "Lost connect{} block for %s",
914 exit_client(client_p
, client_p
, &me
, "Lost connect{} block");
919 if(client_p
->localClient
->ip
.ss_family
== AF_INET6
)
920 port
= ntohs(((struct sockaddr_in6
*)&client_p
->localClient
->ip
)->sin6_port
);
923 port
= ntohs(((struct sockaddr_in
*)&client_p
->localClient
->ip
)->sin_port
);
925 if(ServerConfVhosted(server_p
))
927 memcpy(&myipnum
, &server_p
->my_ipnum
, sizeof(myipnum
));
928 ((struct sockaddr_in
*)&myipnum
)->sin_port
= 0;
929 myipnum
.ss_family
= server_p
->aftype
;
932 else if(server_p
->aftype
== AF_INET
&& ServerInfo
.specific_ipv4_vhost
)
934 memcpy(&myipnum
, &ServerInfo
.ip
, sizeof(myipnum
));
935 ((struct sockaddr_in
*)&myipnum
)->sin_port
= 0;
936 myipnum
.ss_family
= AF_INET
;
937 SET_SS_LEN(&myipnum
, sizeof(struct sockaddr_in
));
941 else if((server_p
->aftype
== AF_INET6
) && ServerInfo
.specific_ipv6_vhost
)
943 memcpy(&myipnum
, &ServerInfo
.ip6
, sizeof(myipnum
));
944 ((struct sockaddr_in6
*)&myipnum
)->sin6_port
= 0;
945 myipnum
.ss_family
= AF_INET6
;
946 SET_SS_LEN(&myipnum
, sizeof(struct sockaddr_in6
));
952 ilog(L_SERVER
, "Connecting to %s[%s] port %d (%s)", client_p
->name
, client_p
->sockhost
, port
,
954 server_p
->aftype
== AF_INET6
? "IPv6" :
956 (server_p
->aftype
== AF_INET
? "IPv4" : "?"));
958 if(ServerConfSSL(server_p
))
960 rb_connect_tcp(client_p
->localClient
->F
, (struct sockaddr
*)&client_p
->localClient
->ip
,
961 NULL
, 0, serv_connect_ssl_callback
,
962 client_p
, ConfigFileEntry
.connect_timeout
);
965 rb_connect_tcp(client_p
->localClient
->F
, (struct sockaddr
*)&client_p
->localClient
->ip
,
966 NULL
, 0, serv_connect_callback
,
967 client_p
, ConfigFileEntry
.connect_timeout
);
972 rb_inet_ntop_sock((struct sockaddr
*)&myipnum
, vhoststr
, sizeof vhoststr
);
973 ilog(L_SERVER
, "Connecting to %s[%s] port %d (%s) (vhost %s)", client_p
->name
, client_p
->sockhost
, port
,
975 server_p
->aftype
== AF_INET6
? "IPv6" :
977 (server_p
->aftype
== AF_INET
? "IPv4" : "?"), vhoststr
);
980 if(ServerConfSSL(server_p
))
981 rb_connect_tcp(client_p
->localClient
->F
, (struct sockaddr
*)&client_p
->localClient
->ip
,
982 (struct sockaddr
*) &myipnum
,
983 GET_SS_LEN(&myipnum
), serv_connect_ssl_callback
, client_p
,
984 ConfigFileEntry
.connect_timeout
);
986 rb_connect_tcp(client_p
->localClient
->F
, (struct sockaddr
*)&client_p
->localClient
->ip
,
987 (struct sockaddr
*) &myipnum
,
988 GET_SS_LEN(&myipnum
), serv_connect_callback
, client_p
,
989 ConfigFileEntry
.connect_timeout
);
995 serv_connect_dns_callback(void *vptr
, struct DNSReply
*reply
)
997 struct Client
*client_p
= vptr
;
1000 rb_free(client_p
->localClient
->dnsquery
);
1001 client_p
->localClient
->dnsquery
= NULL
;
1005 sendto_realops_snomask(SNO_GENERAL
, is_remote_connect(client_p
) ? L_NETWIDE
: L_ALL
, "Cannot resolve hostname for %s",
1007 ilog(L_SERVER
, "Cannot resolve hostname for %s",
1008 log_client_name(client_p
, HIDE_IP
));
1009 exit_client(client_p
, client_p
, &me
, "Cannot resolve hostname");
1013 if(reply
->addr
.ss_family
== AF_INET6
)
1014 port
= ((struct sockaddr_in6
*)&client_p
->localClient
->ip
)->sin6_port
;
1017 port
= ((struct sockaddr_in
*)&client_p
->localClient
->ip
)->sin_port
;
1018 memcpy(&client_p
->localClient
->ip
, &reply
->addr
, sizeof(client_p
->localClient
->ip
));
1020 if(reply
->addr
.ss_family
== AF_INET6
)
1021 ((struct sockaddr_in6
*)&client_p
->localClient
->ip
)->sin6_port
= port
;
1024 ((struct sockaddr_in
*)&client_p
->localClient
->ip
)->sin_port
= port
;
1025 /* Set sockhost properly now -- jilles */
1026 rb_inet_ntop_sock((struct sockaddr
*)&client_p
->localClient
->ip
,
1027 client_p
->sockhost
, sizeof client_p
->sockhost
);
1028 serv_connect_resolved(client_p
);
1032 * serv_connect() - initiate a server connection
1034 * inputs - pointer to conf
1035 * - pointer to client doing the connet
1039 * This code initiates a connection to a server. It first checks to make
1040 * sure the given server exists. If this is the case, it creates a socket,
1041 * creates a client, saves the socket information in the client, and
1042 * initiates a connection to the server through rb_connect_tcp(). The
1043 * completion of this goes through serv_completed_connection().
1045 * We return 1 if the connection is attempted, since we don't know whether
1046 * it suceeded or not, and 0 if it fails in here somewhere.
1049 serv_connect(struct server_conf
*server_p
, struct Client
*by
)
1051 struct Client
*client_p
;
1052 struct rb_sockaddr_storage theiripnum
;
1054 char note
[HOSTLEN
+ 10];
1056 s_assert(server_p
!= NULL
);
1057 if(server_p
== NULL
)
1061 * Make sure this server isn't already connected
1063 if((client_p
= find_server(NULL
, server_p
->name
)))
1065 sendto_realops_snomask(SNO_GENERAL
, L_ALL
,
1066 "Server %s already present from %s",
1067 server_p
->name
, client_p
->name
);
1068 if(by
&& IsPerson(by
) && !MyClient(by
))
1069 sendto_one_notice(by
, ":Server %s already present from %s",
1070 server_p
->name
, client_p
->name
);
1074 /* create a socket for the server connection */
1075 if((F
= rb_socket(server_p
->aftype
, SOCK_STREAM
, 0, NULL
)) == NULL
)
1077 ilog_error("opening a stream socket");
1081 rb_snprintf(note
, sizeof note
, "Server: %s", server_p
->name
);
1084 /* Create a local client */
1085 client_p
= make_client(NULL
);
1087 /* Copy in the server, hostname, fd
1088 * The sockhost may be a hostname, this will be corrected later
1091 rb_strlcpy(client_p
->name
, server_p
->name
, sizeof(client_p
->name
));
1092 rb_strlcpy(client_p
->host
, server_p
->host
, sizeof(client_p
->host
));
1093 rb_strlcpy(client_p
->sockhost
, server_p
->host
, sizeof(client_p
->sockhost
));
1094 client_p
->localClient
->F
= F
;
1095 add_to_cli_fd_hash(client_p
);
1098 * Set up the initial server evilness, ripped straight from
1099 * connect_server(), so don't blame me for it being evil.
1103 if(!rb_set_buffers(client_p
->localClient
->F
, READBUF_SIZE
))
1105 ilog_error("setting the buffer size for a server connection");
1109 * Attach config entries to client here rather than in
1110 * serv_connect_callback(). This to avoid null pointer references.
1112 attach_server_conf(client_p
, server_p
);
1115 * at this point we have a connection in progress and C/N lines
1116 * attached to the client, the socket info should be saved in the
1117 * client and it should either be resolved or have a valid address.
1119 * The socket has been connected or connect is in progress.
1121 make_server(client_p
);
1122 if(by
&& IsPerson(by
))
1124 strcpy(client_p
->serv
->by
, by
->name
);
1125 if(client_p
->serv
->user
)
1126 free_user(client_p
->serv
->user
, NULL
);
1127 client_p
->serv
->user
= by
->user
;
1132 strcpy(client_p
->serv
->by
, "AutoConn.");
1133 if(client_p
->serv
->user
)
1134 free_user(client_p
->serv
->user
, NULL
);
1135 client_p
->serv
->user
= NULL
;
1137 SetConnecting(client_p
);
1138 rb_dlinkAddTail(client_p
, &client_p
->node
, &global_client_list
);
1140 if (rb_inet_pton_sock(server_p
->host
, (struct sockaddr
*)&theiripnum
) > 0)
1142 memcpy(&client_p
->localClient
->ip
, &theiripnum
, sizeof(client_p
->localClient
->ip
));
1144 if(theiripnum
.ss_family
== AF_INET6
)
1145 ((struct sockaddr_in6
*)&client_p
->localClient
->ip
)->sin6_port
= htons(server_p
->port
);
1148 ((struct sockaddr_in
*)&client_p
->localClient
->ip
)->sin_port
= htons(server_p
->port
);
1150 return serv_connect_resolved(client_p
);
1155 if(theiripnum
.ss_family
== AF_INET6
)
1156 ((struct sockaddr_in6
*)&client_p
->localClient
->ip
)->sin6_port
= htons(server_p
->port
);
1159 ((struct sockaddr_in
*)&client_p
->localClient
->ip
)->sin_port
= htons(server_p
->port
);
1161 client_p
->localClient
->dnsquery
= rb_malloc(sizeof(struct DNSQuery
));
1162 client_p
->localClient
->dnsquery
->ptr
= client_p
;
1163 client_p
->localClient
->dnsquery
->callback
= serv_connect_dns_callback
;
1164 gethost_byname_type(server_p
->host
, client_p
->localClient
->dnsquery
,
1166 server_p
->aftype
== AF_INET6
? T_AAAA
:
1174 serv_connect_ssl_callback(rb_fde_t
*F
, int status
, void *data
)
1176 struct Client
*client_p
= data
;
1178 rb_connect_sockaddr(F
, (struct sockaddr
*)&client_p
->localClient
->ip
, sizeof(client_p
->localClient
->ip
));
1181 /* Print error message, just like non-SSL. */
1182 serv_connect_callback(F
, status
, data
);
1185 if(rb_socketpair(AF_UNIX
, SOCK_STREAM
, 0, &xF
[0], &xF
[1], "Outgoing ssld connection") == -1)
1187 ilog_error("rb_socketpair failed for server");
1188 serv_connect_callback(F
, RB_ERROR
, data
);
1192 del_from_cli_fd_hash(client_p
);
1193 client_p
->localClient
->F
= xF
[0];
1194 add_to_cli_fd_hash(client_p
);
1196 client_p
->localClient
->ssl_ctl
= start_ssld_connect(F
, xF
[1], rb_get_fd(xF
[0]));
1198 serv_connect_callback(client_p
->localClient
->F
, RB_OK
, client_p
);
1202 * serv_connect_callback() - complete a server connection.
1204 * This routine is called after the server connection attempt has
1205 * completed. If unsucessful, an error is sent to ops and the client
1206 * is closed. If sucessful, it goes through the initialisation/check
1207 * procedures, the capabilities are sent, and the socket is then
1208 * marked for reading.
1211 serv_connect_callback(rb_fde_t
*F
, int status
, void *data
)
1213 struct Client
*client_p
= data
;
1214 struct server_conf
*server_p
;
1217 /* First, make sure its a real client! */
1218 s_assert(client_p
!= NULL
);
1219 s_assert(client_p
->localClient
->F
== F
);
1221 if(client_p
== NULL
)
1224 /* while we were waiting for the callback, its possible this already
1227 if(find_server(NULL
, client_p
->name
) != NULL
)
1229 exit_client(client_p
, client_p
, &me
, "Server Exists");
1233 if(client_p
->localClient
->ssl_ctl
== NULL
)
1234 rb_connect_sockaddr(F
, (struct sockaddr
*)&client_p
->localClient
->ip
, sizeof(client_p
->localClient
->ip
));
1236 /* Check the status */
1239 /* COMM_ERR_TIMEOUT wont have an errno associated with it,
1240 * the others will.. --fl
1242 if(status
== RB_ERR_TIMEOUT
)
1244 sendto_realops_snomask(SNO_GENERAL
, is_remote_connect(client_p
) ? L_NETWIDE
: L_ALL
,
1245 "Error connecting to %s[%s]: %s",
1249 ilog(L_SERVER
, "Error connecting to %s[%s]: %s",
1250 client_p
->name
, client_p
->sockhost
,
1255 errstr
= strerror(rb_get_sockerr(F
));
1256 sendto_realops_snomask(SNO_GENERAL
, is_remote_connect(client_p
) ? L_NETWIDE
: L_ALL
,
1257 "Error connecting to %s[%s]: %s (%s)",
1260 rb_errstr(status
), errstr
);
1261 ilog(L_SERVER
, "Error connecting to %s[%s]: %s (%s)",
1262 client_p
->name
, client_p
->sockhost
,
1263 rb_errstr(status
), errstr
);
1266 exit_client(client_p
, client_p
, &me
, rb_errstr(status
));
1270 /* COMM_OK, so continue the connection procedure */
1271 /* Get the C/N lines */
1272 if((server_p
= client_p
->localClient
->att_sconf
) == NULL
)
1274 sendto_realops_snomask(SNO_GENERAL
, is_remote_connect(client_p
) ? L_NETWIDE
: L_ALL
, "Lost connect{} block for %s",
1276 exit_client(client_p
, client_p
, &me
, "Lost connect{} block");
1280 /* Next, send the initial handshake */
1281 SetHandshake(client_p
);
1283 if(!EmptyString(server_p
->spasswd
))
1285 sendto_one(client_p
, "PASS %s TS %d :%s",
1286 server_p
->spasswd
, TS_CURRENT
, me
.id
);
1289 /* pass my info to the new server */
1290 send_capabilities(client_p
, default_server_capabs
1291 | (ServerConfCompressed(server_p
) ? CAP_ZIP_SUPPORTED
: 0)
1292 | (ServerConfTb(server_p
) ? CAP_TB
: 0));
1294 sendto_one(client_p
, "SERVER %s 1 :%s%s",
1296 ConfigServerHide
.hidden
? "(H) " : "", me
.info
);
1299 * If we've been marked dead because a send failed, just exit
1300 * here now and save everyone the trouble of us ever existing.
1302 if(IsAnyDead(client_p
))
1304 sendto_realops_snomask(SNO_GENERAL
, is_remote_connect(client_p
) ? L_NETWIDE
: L_ALL
,
1305 "%s went dead during handshake", client_p
->name
);
1306 exit_client(client_p
, client_p
, &me
, "Went dead during handshake");
1310 /* don't move to serv_list yet -- we haven't sent a burst! */
1312 /* If we get here, we're ok, so lets start reading some data */
1313 read_packet(F
, client_p
);