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
},
96 static CNCB serv_connect_callback
;
97 static CNCB serv_connect_ssl_callback
;
100 * hunt_server - Do the basic thing in delivering the message (command)
101 * across the relays to the specific server (server) for
104 * Note: The command is a format string and *MUST* be
105 * of prefixed style (e.g. ":%s COMMAND %s ...").
106 * Command can have only max 8 parameters.
108 * server parv[server] is the parameter identifying the
112 * parv[server] is replaced with the pointer to the
113 * real servername from the matched client (I'm lazy
116 * returns: (see #defines)
119 hunt_server(struct Client
*client_p
, struct Client
*source_p
,
120 const char *command
, int server
, int parc
, const char *parv
[])
122 struct Client
*target_p
;
129 * Assume it's me, if no server
131 if(parc
<= server
|| EmptyString(parv
[server
]) ||
132 match(parv
[server
], me
.name
) || (strcmp(parv
[server
], me
.id
) == 0))
133 return (HUNTED_ISME
);
135 new = LOCAL_COPY(parv
[server
]);
138 * These are to pickup matches that would cause the following
139 * message to go in the wrong direction while doing quick fast
140 * non-matching lookups.
142 if(MyClient(source_p
))
143 target_p
= find_named_client(new);
145 target_p
= find_client(new);
148 if(target_p
->from
== source_p
->from
&& !MyConnect(target_p
))
152 wilds
= (strchr(new, '?') || strchr(new, '*'));
155 * Again, if there are no wild cards involved in the server
156 * name, use the hash lookup
158 if(!target_p
&& wilds
)
160 RB_DLINK_FOREACH(ptr
, global_client_list
.head
)
162 if(match(new, ((struct Client
*) (ptr
->data
))->name
))
164 target_p
= ptr
->data
;
170 if(target_p
&& !IsRegistered(target_p
))
175 if(IsMe(target_p
) || MyClient(target_p
))
179 parv
[server
] = get_id(target_p
, target_p
);
181 sendto_one(target_p
, command
, get_id(source_p
, target_p
),
182 parv
[1], parv
[2], parv
[3], parv
[4], parv
[5], parv
[6], parv
[7], parv
[8]);
184 return (HUNTED_PASS
);
187 if(MyClient(source_p
) || !IsDigit(parv
[server
][0]))
188 sendto_one_numeric(source_p
, ERR_NOSUCHSERVER
,
189 form_str(ERR_NOSUCHSERVER
), parv
[server
]);
190 return (HUNTED_NOSUCH
);
194 * try_connections - scan through configuration and try new connections.
195 * Returns the calendar time when the next call to this
196 * function should be made latest. (No harm done if this
197 * is called earlier or later...)
200 try_connections(void *unused
)
202 struct Client
*client_p
;
203 struct server_conf
*server_p
= NULL
;
204 struct server_conf
*tmp_p
;
207 int connecting
= FALSE
;
211 RB_DLINK_FOREACH(ptr
, server_conf_list
.head
)
215 if(ServerConfIllegal(tmp_p
) || !ServerConfAutoconn(tmp_p
))
218 /* don't allow ssl connections if ssl isn't setup */
219 if(ServerConfSSL(tmp_p
) && (!ssl_ok
|| !get_ssld_count()))
222 cltmp
= tmp_p
->class;
225 * Skip this entry if the use of it is still on hold until
226 * future. Otherwise handle this entry (and set it on hold
227 * until next time). Will reset only hold times, if already
228 * made one successfull connection... [this algorithm is
229 * a bit fuzzy... -- msa >;) ]
231 if(tmp_p
->hold
> rb_current_time())
233 if(next
> tmp_p
->hold
|| next
== 0)
238 confrq
= get_con_freq(cltmp
);
239 tmp_p
->hold
= rb_current_time() + confrq
;
242 * Found a CONNECT config with port specified, scan clients
243 * and see if this server is already connected?
245 client_p
= find_server(NULL
, tmp_p
->name
);
247 if(!client_p
&& (CurrUsers(cltmp
) < MaxUsers(cltmp
)) && !connecting
)
251 /* We connect only one at time... */
255 if((next
> tmp_p
->hold
) || (next
== 0))
259 /* TODO: change this to set active flag to 0 when added to event! --Habeeb */
260 if(GlobalSetOptions
.autoconn
== 0)
266 /* move this connect entry to end.. */
267 rb_dlinkDelete(&server_p
->node
, &server_conf_list
);
268 rb_dlinkAddTail(server_p
, &server_p
->node
, &server_conf_list
);
271 * We used to only print this if serv_connect() actually
272 * suceeded, but since rb_tcp_connect() can call the callback
273 * immediately if there is an error, we were getting error messages
274 * in the wrong order. SO, we just print out the activated line,
275 * and let serv_connect() / serv_connect_callback() print an
276 * error afterwards if it fails.
279 sendto_realops_snomask(SNO_GENERAL
, L_ALL
,
280 "Connection to %s activated",
283 serv_connect(server_p
, 0);
287 check_server(const char *name
, struct Client
*client_p
)
289 struct server_conf
*server_p
= NULL
;
290 struct server_conf
*tmp_p
;
294 s_assert(NULL
!= client_p
);
298 if(!(client_p
->localClient
->passwd
))
301 if(strlen(name
) > HOSTLEN
)
304 RB_DLINK_FOREACH(ptr
, server_conf_list
.head
)
308 if(ServerConfIllegal(tmp_p
))
311 if(!match(tmp_p
->name
, name
))
316 /* XXX: Fix me for IPv6 */
317 /* XXX sockhost is the IPv4 ip as a string */
318 if(match(tmp_p
->host
, client_p
->host
) ||
319 match(tmp_p
->host
, client_p
->sockhost
))
323 if(ServerConfEncrypted(tmp_p
))
325 if(!strcmp(tmp_p
->passwd
, rb_crypt(client_p
->localClient
->passwd
,
332 else if(!strcmp(tmp_p
->passwd
, client_p
->localClient
->passwd
))
343 if(ServerConfSSL(server_p
) && client_p
->localClient
->ssl_ctl
== NULL
)
348 attach_server_conf(client_p
, server_p
);
350 /* clear ZIP/TB if they support but we dont want them */
352 if(!ServerConfCompressed(server_p
))
354 ClearCap(client_p
, CAP_ZIP
);
356 if(!ServerConfTb(server_p
))
357 ClearCap(client_p
, CAP_TB
);
365 * inputs - Client pointer to send to
366 * - int flag of capabilities that this server has
368 * side effects - send the CAPAB line to a server -orabidoo
372 send_capabilities(struct Client
*client_p
, int cap_can_send
)
374 struct Capability
*cap
;
375 char msgbuf
[BUFSIZE
];
381 for (cap
= captab
; cap
->name
; ++cap
)
383 if(cap
->cap
& cap_can_send
)
385 tl
= rb_sprintf(t
, "%s ", cap
->name
);
393 sendto_one(client_p
, "CAPAB :%s", msgbuf
);
397 burst_ban(struct Client
*client_p
)
400 struct ConfItem
*aconf
;
401 const char *type
, *oper
;
402 /* +5 for !,@,{,} and null */
403 char operbuf
[NICKLEN
+ USERLEN
+ HOSTLEN
+ HOSTLEN
+ 5];
407 melen
= strlen(me
.name
);
408 RB_DLINK_FOREACH(ptr
, prop_bans
.head
)
412 /* Skip expired stuff. */
413 if(aconf
->lifetime
< rb_current_time())
415 switch(aconf
->status
& ~CONF_ILLEGAL
)
417 case CONF_KILL
: type
= "K"; break;
418 case CONF_DLINE
: type
= "D"; break;
419 case CONF_XLINE
: type
= "X"; break;
420 case CONF_RESV_NICK
: type
= "R"; break;
421 case CONF_RESV_CHANNEL
: type
= "R"; break;
425 oper
= aconf
->info
.oper
;
426 if(aconf
->flags
& CONF_FLAGS_MYOPER
)
428 /* Our operator{} names may not be meaningful
429 * to other servers, so rewrite to our server
432 rb_strlcpy(operbuf
, aconf
->info
.oper
, sizeof buf
);
433 p
= strrchr(operbuf
, '{');
435 operbuf
+ sizeof operbuf
- p
> (ptrdiff_t)(melen
+ 2))
437 memcpy(p
+ 1, me
.name
, melen
);
443 sendto_one(client_p
, ":%s BAN %s %s %s %lu %d %d %s :%s%s%s",
446 aconf
->user
? aconf
->user
: "*", aconf
->host
,
447 (unsigned long)aconf
->created
,
448 (int)(aconf
->hold
- aconf
->created
),
449 (int)(aconf
->lifetime
- aconf
->created
),
452 aconf
->spasswd
? "|" : "",
453 aconf
->spasswd
? aconf
->spasswd
: "");
459 * input - client to burst to, channel name, list to burst, mode flag
461 * side effects - client is sent a list of +b, +e, or +I modes
464 burst_modes_TS6(struct Client
*client_p
, struct Channel
*chptr
,
465 rb_dlink_list
*list
, char flag
)
474 cur_len
= mlen
= rb_sprintf(buf
, ":%s BMASK %ld %s %c :",
475 me
.id
, (long) chptr
->channelts
, chptr
->chname
, flag
);
478 RB_DLINK_FOREACH(ptr
, list
->head
)
482 tlen
= strlen(banptr
->banstr
) + 1;
485 if(cur_len
+ tlen
> BUFSIZE
- 3)
487 /* the one we're trying to send doesnt fit at all! */
494 /* chop off trailing space and send.. */
496 sendto_one(client_p
, "%s", buf
);
501 rb_sprintf(t
, "%s ", banptr
->banstr
);
506 /* cant ever exit the loop above without having modified buf,
507 * chop off trailing space and send.
510 sendto_one(client_p
, "%s", buf
);
516 * inputs - client (server) to send nick towards
517 * - client to send nick for
519 * side effects - NICK message is sent towards given client_p
522 burst_TS6(struct Client
*client_p
)
524 static char ubuf
[12];
525 struct Client
*target_p
;
526 struct Channel
*chptr
;
527 struct membership
*msptr
;
528 hook_data_client hclientinfo
;
529 hook_data_channel hchaninfo
;
536 struct DictionaryIter iter
;
538 hclientinfo
.client
= hchaninfo
.client
= client_p
;
540 RB_DLINK_FOREACH(ptr
, global_client_list
.head
)
542 target_p
= ptr
->data
;
544 if(!IsPerson(target_p
))
547 send_umode(NULL
, target_p
, 0, 0, ubuf
);
554 if(IsCapable(client_p
, CAP_EUID
))
555 sendto_one(client_p
, ":%s EUID %s %d %ld %s %s %s %s %s %s %s :%s",
556 target_p
->servptr
->id
, target_p
->name
,
557 target_p
->hopcount
+ 1,
558 (long) target_p
->tsinfo
, ubuf
,
559 target_p
->username
, target_p
->host
,
560 IsIPSpoof(target_p
) ? "0" : target_p
->sockhost
,
562 IsDynSpoof(target_p
) ? target_p
->orighost
: "*",
563 EmptyString(target_p
->user
->suser
) ? "*" : target_p
->user
->suser
,
566 sendto_one(client_p
, ":%s UID %s %d %ld %s %s %s %s %s :%s",
567 target_p
->servptr
->id
, target_p
->name
,
568 target_p
->hopcount
+ 1,
569 (long) target_p
->tsinfo
, ubuf
,
570 target_p
->username
, target_p
->host
,
571 IsIPSpoof(target_p
) ? "0" : target_p
->sockhost
,
572 target_p
->id
, target_p
->info
);
574 if(!EmptyString(target_p
->certfp
))
575 sendto_one(client_p
, ":%s ENCAP * CERTFP :%s",
576 use_id(target_p
), target_p
->certfp
);
578 if(!IsCapable(client_p
, CAP_EUID
))
580 if(IsDynSpoof(target_p
))
581 sendto_one(client_p
, ":%s ENCAP * REALHOST %s",
582 use_id(target_p
), target_p
->orighost
);
583 if(!EmptyString(target_p
->user
->suser
))
584 sendto_one(client_p
, ":%s ENCAP * LOGIN %s",
585 use_id(target_p
), target_p
->user
->suser
);
588 DICTIONARY_FOREACH(md
, &iter
, target_p
->user
->metadata
)
590 sendto_one(client_p
, ":%s ENCAP * METADATA ADD %s %s :%s",
591 use_id(&me
), use_id(target_p
), md
->name
, md
->value
);
594 if(ConfigFileEntry
.burst_away
&& !EmptyString(target_p
->user
->away
))
595 sendto_one(client_p
, ":%s AWAY :%s",
597 target_p
->user
->away
);
599 hclientinfo
.target
= target_p
;
600 call_hook(h_burst_client
, &hclientinfo
);
603 RB_DLINK_FOREACH(ptr
, global_channel_list
.head
)
607 if(*chptr
->chname
!= '#')
610 cur_len
= mlen
= rb_sprintf(buf
, ":%s SJOIN %ld %s %s :", me
.id
,
611 (long) chptr
->channelts
, chptr
->chname
,
612 channel_modes(chptr
, client_p
));
616 RB_DLINK_FOREACH(uptr
, chptr
->members
.head
)
620 tlen
= strlen(use_id(msptr
->client_p
)) + 1;
630 if(cur_len
+ tlen
>= BUFSIZE
- 3)
633 sendto_one(client_p
, "%s", buf
);
638 rb_sprintf(t
, "%s%s ", find_channel_status(msptr
, 1),
639 use_id(msptr
->client_p
));
645 if (rb_dlink_list_length(&chptr
->members
) > 0)
647 /* remove trailing space */
650 sendto_one(client_p
, "%s", buf
);
652 DICTIONARY_FOREACH(md
, &iter
, chptr
->metadata
)
654 /* don't bother bursting +J metadata */
655 if(!(md
->name
[0] == 'K'))
656 sendto_one(client_p
, ":%s ENCAP * METADATA ADD %s %s :%s",
657 use_id(&me
), chptr
->chname
, md
->name
, md
->value
);
660 if(rb_dlink_list_length(&chptr
->banlist
) > 0)
661 burst_modes_TS6(client_p
, chptr
, &chptr
->banlist
, 'b');
663 if(IsCapable(client_p
, CAP_EX
) &&
664 rb_dlink_list_length(&chptr
->exceptlist
) > 0)
665 burst_modes_TS6(client_p
, chptr
, &chptr
->exceptlist
, 'e');
667 if(IsCapable(client_p
, CAP_IE
) &&
668 rb_dlink_list_length(&chptr
->invexlist
) > 0)
669 burst_modes_TS6(client_p
, chptr
, &chptr
->invexlist
, 'I');
671 if(rb_dlink_list_length(&chptr
->quietlist
) > 0)
672 burst_modes_TS6(client_p
, chptr
, &chptr
->quietlist
, 'q');
674 if(IsCapable(client_p
, CAP_TB
) && chptr
->topic
!= NULL
)
675 sendto_one(client_p
, ":%s TB %s %ld %s%s:%s",
676 me
.id
, chptr
->chname
, (long) chptr
->topic_time
,
677 ConfigChannel
.burst_topicwho
? chptr
->topic_info
: "",
678 ConfigChannel
.burst_topicwho
? " " : "",
681 hchaninfo
.chptr
= chptr
;
682 call_hook(h_burst_channel
, &hchaninfo
);
685 hclientinfo
.target
= NULL
;
686 call_hook(h_burst_finished
, &hclientinfo
);
690 * show_capabilities - show current server capabilities
692 * inputs - pointer to an struct Client
693 * output - pointer to static string
694 * side effects - build up string representing capabilities of server listed
697 show_capabilities(struct Client
*target_p
)
699 static char msgbuf
[BUFSIZE
];
700 struct Capability
*cap
;
703 rb_strlcpy(msgbuf
, " TS6", sizeof(msgbuf
));
706 rb_strlcat(msgbuf
, " SSL", sizeof(msgbuf
));
708 if(!IsServer(target_p
) || !target_p
->serv
->caps
) /* short circuit if no caps */
711 for (cap
= captab
; cap
->cap
; ++cap
)
713 if(cap
->cap
& target_p
->serv
->caps
)
714 rb_snprintf_append(msgbuf
, sizeof(msgbuf
), " %s", cap
->name
);
723 * inputs - pointer to a struct Client
728 server_estab(struct Client
*client_p
)
730 struct Client
*target_p
;
731 struct server_conf
*server_p
;
732 hook_data_client hdata
;
735 char note
[HOSTLEN
+ 15];
737 s_assert(NULL
!= client_p
);
741 host
= client_p
->name
;
743 if((server_p
= client_p
->localClient
->att_sconf
) == NULL
)
745 /* This shouldn't happen, better tell the ops... -A1kmm */
746 sendto_realops_snomask(SNO_GENERAL
, is_remote_connect(client_p
) ? L_NETWIDE
: L_ALL
,
747 "Warning: Lost connect{} block for server %s!", host
);
748 return exit_client(client_p
, client_p
, client_p
, "Lost connect{} block!");
751 /* We shouldn't have to check this, it should already done before
752 * server_estab is called. -A1kmm
754 if(client_p
->localClient
->passwd
)
756 memset(client_p
->localClient
->passwd
, 0, strlen(client_p
->localClient
->passwd
));
757 rb_free(client_p
->localClient
->passwd
);
758 client_p
->localClient
->passwd
= NULL
;
761 /* Its got identd , since its a server */
764 /* If there is something in the serv_list, it might be this
765 * connecting server..
767 if(!ServerInfo
.hub
&& serv_list
.head
)
769 if(client_p
!= serv_list
.head
->data
|| serv_list
.head
->next
)
771 ServerStats
.is_ref
++;
772 sendto_one(client_p
, "ERROR :I'm a leaf not a hub");
773 return exit_client(client_p
, client_p
, client_p
, "I'm a leaf");
777 if(IsUnknown(client_p
))
780 * jdc -- 1. Use EmptyString(), not [0] index reference.
781 * 2. Check ->spasswd, not ->passwd.
783 if(!EmptyString(server_p
->spasswd
))
785 sendto_one(client_p
, "PASS %s TS %d :%s",
786 server_p
->spasswd
, TS_CURRENT
, me
.id
);
789 /* pass info to new server */
790 send_capabilities(client_p
, default_server_capabs
791 | (ServerConfCompressed(server_p
) ? CAP_ZIP_SUPPORTED
: 0)
792 | (ServerConfTb(server_p
) ? CAP_TB
: 0));
794 sendto_one(client_p
, "SERVER %s 1 :%s%s",
796 ConfigServerHide
.hidden
? "(H) " : "",
797 (me
.info
[0]) ? (me
.info
) : "IRCers United");
800 if(!rb_set_buffers(client_p
->localClient
->F
, READBUF_SIZE
))
801 ilog_error("rb_set_buffers failed for server");
803 /* Enable compression now */
804 if(IsCapable(client_p
, CAP_ZIP
))
806 start_zlib_session(client_p
);
808 sendto_one(client_p
, "SVINFO %d %d 0 :%ld", TS_CURRENT
, TS_MIN
, (long int)rb_current_time());
810 client_p
->servptr
= &me
;
812 if(IsAnyDead(client_p
))
813 return CLIENT_EXITED
;
817 /* Update the capability combination usage counts */
818 set_chcap_usage_counts(client_p
);
820 rb_dlinkAdd(client_p
, &client_p
->lnode
, &me
.serv
->servers
);
821 rb_dlinkMoveNode(&client_p
->localClient
->tnode
, &unknown_list
, &serv_list
);
822 rb_dlinkAddTailAlloc(client_p
, &global_serv_list
);
825 add_to_id_hash(client_p
->id
, client_p
);
827 add_to_client_hash(client_p
->name
, client_p
);
828 /* doesnt duplicate client_p->serv if allocated this struct already */
829 make_server(client_p
);
831 client_p
->serv
->caps
= client_p
->localClient
->caps
;
833 if(client_p
->localClient
->fullcaps
)
835 client_p
->serv
->fullcaps
= rb_strdup(client_p
->localClient
->fullcaps
);
836 rb_free(client_p
->localClient
->fullcaps
);
837 client_p
->localClient
->fullcaps
= NULL
;
840 client_p
->serv
->nameinfo
= scache_connect(client_p
->name
, client_p
->info
, IsHidden(client_p
));
841 client_p
->localClient
->firsttime
= rb_current_time();
842 /* fixing eob timings.. -gnp */
844 if((rb_dlink_list_length(&lclient_list
) + rb_dlink_list_length(&serv_list
)) >
845 (unsigned long)MaxConnectionCount
)
846 MaxConnectionCount
= rb_dlink_list_length(&lclient_list
) +
847 rb_dlink_list_length(&serv_list
);
849 /* Show the real host/IP to admins */
850 sendto_realops_snomask(SNO_GENERAL
, L_ALL
,
851 "Link with %s established: (%s) link",
853 show_capabilities(client_p
));
855 ilog(L_SERVER
, "Link with %s established: (%s) link",
856 log_client_name(client_p
, SHOW_IP
), show_capabilities(client_p
));
859 hdata
.target
= client_p
;
860 call_hook(h_server_introduced
, &hdata
);
862 rb_snprintf(note
, sizeof(note
), "Server: %s", client_p
->name
);
863 rb_note(client_p
->localClient
->F
, note
);
866 ** Old sendto_serv_but_one() call removed because we now
867 ** need to send different names to different servers
868 ** (domain name matching) Send new server to other servers.
870 RB_DLINK_FOREACH(ptr
, serv_list
.head
)
872 target_p
= ptr
->data
;
874 if(target_p
== client_p
)
877 if(has_id(target_p
) && has_id(client_p
))
879 sendto_one(target_p
, ":%s SID %s 2 %s :%s%s",
880 me
.id
, client_p
->name
, client_p
->id
,
881 IsHidden(client_p
) ? "(H) " : "", client_p
->info
);
883 if(IsCapable(target_p
, CAP_ENCAP
) &&
884 !EmptyString(client_p
->serv
->fullcaps
))
885 sendto_one(target_p
, ":%s ENCAP * GCAP :%s",
886 client_p
->id
, client_p
->serv
->fullcaps
);
890 sendto_one(target_p
, ":%s SERVER %s 2 :%s%s",
891 me
.name
, client_p
->name
,
892 IsHidden(client_p
) ? "(H) " : "", client_p
->info
);
894 if(IsCapable(target_p
, CAP_ENCAP
) &&
895 !EmptyString(client_p
->serv
->fullcaps
))
896 sendto_one(target_p
, ":%s ENCAP * GCAP :%s",
897 client_p
->name
, client_p
->serv
->fullcaps
);
902 ** Pass on my client information to the new server
904 ** First, pass only servers (idea is that if the link gets
905 ** cancelled beacause the server was already there,
906 ** there are no NICK's to be cancelled...). Of course,
907 ** if cancellation occurs, all this info is sent anyway,
908 ** and I guess the link dies when a read is attempted...? --msa
910 ** Note: Link cancellation to occur at this point means
911 ** that at least two servers from my fragment are building
912 ** up connection this other fragment at the same time, it's
913 ** a race condition, not the normal way of operation...
915 ** ALSO NOTE: using the get_client_name for server names--
916 ** see previous *WARNING*!!! (Also, original inpath
919 RB_DLINK_FOREACH(ptr
, global_serv_list
.head
)
921 target_p
= ptr
->data
;
923 /* target_p->from == target_p for target_p == client_p */
924 if(IsMe(target_p
) || target_p
->from
== client_p
)
927 /* presumption, if target has an id, so does its uplink */
928 if(has_id(client_p
) && has_id(target_p
))
929 sendto_one(client_p
, ":%s SID %s %d %s :%s%s",
930 target_p
->servptr
->id
, target_p
->name
,
931 target_p
->hopcount
+ 1, target_p
->id
,
932 IsHidden(target_p
) ? "(H) " : "", target_p
->info
);
934 sendto_one(client_p
, ":%s SERVER %s %d :%s%s",
935 target_p
->servptr
->name
,
936 target_p
->name
, target_p
->hopcount
+ 1,
937 IsHidden(target_p
) ? "(H) " : "", target_p
->info
);
939 if(IsCapable(client_p
, CAP_ENCAP
) &&
940 !EmptyString(target_p
->serv
->fullcaps
))
941 sendto_one(client_p
, ":%s ENCAP * GCAP :%s",
942 get_id(target_p
, client_p
),
943 target_p
->serv
->fullcaps
);
946 if(IsCapable(client_p
, CAP_BAN
))
951 /* Always send a PING after connect burst is done */
952 sendto_one(client_p
, "PING :%s", get_id(&me
, client_p
));
954 free_pre_client(client_p
);
956 send_pop_queue(client_p
);
962 * New server connection code
963 * Based upon the stuff floating about in s_bsd.c
968 serv_connect_resolved(struct Client
*client_p
)
970 struct rb_sockaddr_storage myipnum
;
971 char vhoststr
[HOSTIPLEN
];
972 struct server_conf
*server_p
;
975 if((server_p
= client_p
->localClient
->att_sconf
) == NULL
)
977 sendto_realops_snomask(SNO_GENERAL
, is_remote_connect(client_p
) ? L_NETWIDE
: L_ALL
, "Lost connect{} block for %s",
979 exit_client(client_p
, client_p
, &me
, "Lost connect{} block");
984 if(client_p
->localClient
->ip
.ss_family
== AF_INET6
)
985 port
= ntohs(((struct sockaddr_in6
*)&client_p
->localClient
->ip
)->sin6_port
);
988 port
= ntohs(((struct sockaddr_in
*)&client_p
->localClient
->ip
)->sin_port
);
990 if(ServerConfVhosted(server_p
))
992 memcpy(&myipnum
, &server_p
->my_ipnum
, sizeof(myipnum
));
993 ((struct sockaddr_in
*)&myipnum
)->sin_port
= 0;
994 myipnum
.ss_family
= server_p
->aftype
;
997 else if(server_p
->aftype
== AF_INET
&& ServerInfo
.specific_ipv4_vhost
)
999 memcpy(&myipnum
, &ServerInfo
.ip
, sizeof(myipnum
));
1000 ((struct sockaddr_in
*)&myipnum
)->sin_port
= 0;
1001 myipnum
.ss_family
= AF_INET
;
1002 SET_SS_LEN(&myipnum
, sizeof(struct sockaddr_in
));
1006 else if((server_p
->aftype
== AF_INET6
) && ServerInfo
.specific_ipv6_vhost
)
1008 memcpy(&myipnum
, &ServerInfo
.ip6
, sizeof(myipnum
));
1009 ((struct sockaddr_in6
*)&myipnum
)->sin6_port
= 0;
1010 myipnum
.ss_family
= AF_INET6
;
1011 SET_SS_LEN(&myipnum
, sizeof(struct sockaddr_in6
));
1017 ilog(L_SERVER
, "Connecting to %s[%s] port %d (%s)", client_p
->name
, client_p
->sockhost
, port
,
1019 server_p
->aftype
== AF_INET6
? "IPv6" :
1021 (server_p
->aftype
== AF_INET
? "IPv4" : "?"));
1023 if(ServerConfSSL(server_p
))
1025 rb_connect_tcp(client_p
->localClient
->F
, (struct sockaddr
*)&client_p
->localClient
->ip
,
1026 NULL
, 0, serv_connect_ssl_callback
,
1027 client_p
, ConfigFileEntry
.connect_timeout
);
1030 rb_connect_tcp(client_p
->localClient
->F
, (struct sockaddr
*)&client_p
->localClient
->ip
,
1031 NULL
, 0, serv_connect_callback
,
1032 client_p
, ConfigFileEntry
.connect_timeout
);
1037 rb_inet_ntop_sock((struct sockaddr
*)&myipnum
, vhoststr
, sizeof vhoststr
);
1038 ilog(L_SERVER
, "Connecting to %s[%s] port %d (%s) (vhost %s)", client_p
->name
, client_p
->sockhost
, port
,
1040 server_p
->aftype
== AF_INET6
? "IPv6" :
1042 (server_p
->aftype
== AF_INET
? "IPv4" : "?"), vhoststr
);
1045 if(ServerConfSSL(server_p
))
1046 rb_connect_tcp(client_p
->localClient
->F
, (struct sockaddr
*)&client_p
->localClient
->ip
,
1047 (struct sockaddr
*) &myipnum
,
1048 GET_SS_LEN(&myipnum
), serv_connect_ssl_callback
, client_p
,
1049 ConfigFileEntry
.connect_timeout
);
1051 rb_connect_tcp(client_p
->localClient
->F
, (struct sockaddr
*)&client_p
->localClient
->ip
,
1052 (struct sockaddr
*) &myipnum
,
1053 GET_SS_LEN(&myipnum
), serv_connect_callback
, client_p
,
1054 ConfigFileEntry
.connect_timeout
);
1060 serv_connect_dns_callback(void *vptr
, struct DNSReply
*reply
)
1062 struct Client
*client_p
= vptr
;
1065 rb_free(client_p
->localClient
->dnsquery
);
1066 client_p
->localClient
->dnsquery
= NULL
;
1070 sendto_realops_snomask(SNO_GENERAL
, is_remote_connect(client_p
) ? L_NETWIDE
: L_ALL
, "Cannot resolve hostname for %s",
1072 ilog(L_SERVER
, "Cannot resolve hostname for %s",
1073 log_client_name(client_p
, HIDE_IP
));
1074 exit_client(client_p
, client_p
, &me
, "Cannot resolve hostname");
1078 if(reply
->addr
.ss_family
== AF_INET6
)
1079 port
= ((struct sockaddr_in6
*)&client_p
->localClient
->ip
)->sin6_port
;
1082 port
= ((struct sockaddr_in
*)&client_p
->localClient
->ip
)->sin_port
;
1083 memcpy(&client_p
->localClient
->ip
, &reply
->addr
, sizeof(client_p
->localClient
->ip
));
1085 if(reply
->addr
.ss_family
== AF_INET6
)
1086 ((struct sockaddr_in6
*)&client_p
->localClient
->ip
)->sin6_port
= port
;
1089 ((struct sockaddr_in
*)&client_p
->localClient
->ip
)->sin_port
= port
;
1090 /* Set sockhost properly now -- jilles */
1091 rb_inet_ntop_sock((struct sockaddr
*)&client_p
->localClient
->ip
,
1092 client_p
->sockhost
, sizeof client_p
->sockhost
);
1093 serv_connect_resolved(client_p
);
1097 * serv_connect() - initiate a server connection
1099 * inputs - pointer to conf
1100 * - pointer to client doing the connet
1104 * This code initiates a connection to a server. It first checks to make
1105 * sure the given server exists. If this is the case, it creates a socket,
1106 * creates a client, saves the socket information in the client, and
1107 * initiates a connection to the server through rb_connect_tcp(). The
1108 * completion of this goes through serv_completed_connection().
1110 * We return 1 if the connection is attempted, since we don't know whether
1111 * it suceeded or not, and 0 if it fails in here somewhere.
1114 serv_connect(struct server_conf
*server_p
, struct Client
*by
)
1116 struct Client
*client_p
;
1117 struct rb_sockaddr_storage theiripnum
;
1119 char note
[HOSTLEN
+ 10];
1121 s_assert(server_p
!= NULL
);
1122 if(server_p
== NULL
)
1126 * Make sure this server isn't already connected
1128 if((client_p
= find_server(NULL
, server_p
->name
)))
1130 sendto_realops_snomask(SNO_GENERAL
, L_ALL
,
1131 "Server %s already present from %s",
1132 server_p
->name
, client_p
->name
);
1133 if(by
&& IsPerson(by
) && !MyClient(by
))
1134 sendto_one_notice(by
, ":Server %s already present from %s",
1135 server_p
->name
, client_p
->name
);
1139 /* create a socket for the server connection */
1140 if((F
= rb_socket(server_p
->aftype
, SOCK_STREAM
, 0, NULL
)) == NULL
)
1142 ilog_error("opening a stream socket");
1146 rb_snprintf(note
, sizeof note
, "Server: %s", server_p
->name
);
1149 /* Create a local client */
1150 client_p
= make_client(NULL
);
1152 /* Copy in the server, hostname, fd
1153 * The sockhost may be a hostname, this will be corrected later
1156 rb_strlcpy(client_p
->name
, server_p
->name
, sizeof(client_p
->name
));
1157 rb_strlcpy(client_p
->host
, server_p
->host
, sizeof(client_p
->host
));
1158 rb_strlcpy(client_p
->sockhost
, server_p
->host
, sizeof(client_p
->sockhost
));
1159 client_p
->localClient
->F
= F
;
1160 add_to_cli_fd_hash(client_p
);
1163 * Set up the initial server evilness, ripped straight from
1164 * connect_server(), so don't blame me for it being evil.
1168 if(!rb_set_buffers(client_p
->localClient
->F
, READBUF_SIZE
))
1170 ilog_error("setting the buffer size for a server connection");
1174 * Attach config entries to client here rather than in
1175 * serv_connect_callback(). This to avoid null pointer references.
1177 attach_server_conf(client_p
, server_p
);
1180 * at this point we have a connection in progress and C/N lines
1181 * attached to the client, the socket info should be saved in the
1182 * client and it should either be resolved or have a valid address.
1184 * The socket has been connected or connect is in progress.
1186 make_server(client_p
);
1187 if(by
&& IsPerson(by
))
1189 strcpy(client_p
->serv
->by
, by
->name
);
1190 if(client_p
->serv
->user
)
1191 free_user(client_p
->serv
->user
, NULL
);
1192 client_p
->serv
->user
= by
->user
;
1197 strcpy(client_p
->serv
->by
, "AutoConn.");
1198 if(client_p
->serv
->user
)
1199 free_user(client_p
->serv
->user
, NULL
);
1200 client_p
->serv
->user
= NULL
;
1202 SetConnecting(client_p
);
1203 rb_dlinkAddTail(client_p
, &client_p
->node
, &global_client_list
);
1205 if (rb_inet_pton_sock(server_p
->host
, (struct sockaddr
*)&theiripnum
) > 0)
1207 memcpy(&client_p
->localClient
->ip
, &theiripnum
, sizeof(client_p
->localClient
->ip
));
1209 if(theiripnum
.ss_family
== AF_INET6
)
1210 ((struct sockaddr_in6
*)&client_p
->localClient
->ip
)->sin6_port
= htons(server_p
->port
);
1213 ((struct sockaddr_in
*)&client_p
->localClient
->ip
)->sin_port
= htons(server_p
->port
);
1215 return serv_connect_resolved(client_p
);
1220 if(theiripnum
.ss_family
== AF_INET6
)
1221 ((struct sockaddr_in6
*)&client_p
->localClient
->ip
)->sin6_port
= htons(server_p
->port
);
1224 ((struct sockaddr_in
*)&client_p
->localClient
->ip
)->sin_port
= htons(server_p
->port
);
1226 client_p
->localClient
->dnsquery
= rb_malloc(sizeof(struct DNSQuery
));
1227 client_p
->localClient
->dnsquery
->ptr
= client_p
;
1228 client_p
->localClient
->dnsquery
->callback
= serv_connect_dns_callback
;
1229 gethost_byname_type(server_p
->host
, client_p
->localClient
->dnsquery
,
1231 server_p
->aftype
== AF_INET6
? T_AAAA
:
1239 serv_connect_ssl_callback(rb_fde_t
*F
, int status
, void *data
)
1241 struct Client
*client_p
= data
;
1243 rb_connect_sockaddr(F
, (struct sockaddr
*)&client_p
->localClient
->ip
, sizeof(client_p
->localClient
->ip
));
1246 /* Print error message, just like non-SSL. */
1247 serv_connect_callback(F
, status
, data
);
1250 if(rb_socketpair(AF_UNIX
, SOCK_STREAM
, 0, &xF
[0], &xF
[1], "Outgoing ssld connection") == -1)
1252 ilog_error("rb_socketpair failed for server");
1253 serv_connect_callback(F
, RB_ERROR
, data
);
1257 del_from_cli_fd_hash(client_p
);
1258 client_p
->localClient
->F
= xF
[0];
1259 add_to_cli_fd_hash(client_p
);
1261 client_p
->localClient
->ssl_ctl
= start_ssld_connect(F
, xF
[1], rb_get_fd(xF
[0]));
1263 serv_connect_callback(client_p
->localClient
->F
, RB_OK
, client_p
);
1267 * serv_connect_callback() - complete a server connection.
1269 * This routine is called after the server connection attempt has
1270 * completed. If unsucessful, an error is sent to ops and the client
1271 * is closed. If sucessful, it goes through the initialisation/check
1272 * procedures, the capabilities are sent, and the socket is then
1273 * marked for reading.
1276 serv_connect_callback(rb_fde_t
*F
, int status
, void *data
)
1278 struct Client
*client_p
= data
;
1279 struct server_conf
*server_p
;
1282 /* First, make sure its a real client! */
1283 s_assert(client_p
!= NULL
);
1284 s_assert(client_p
->localClient
->F
== F
);
1286 if(client_p
== NULL
)
1289 /* while we were waiting for the callback, its possible this already
1292 if(find_server(NULL
, client_p
->name
) != NULL
)
1294 exit_client(client_p
, client_p
, &me
, "Server Exists");
1298 if(client_p
->localClient
->ssl_ctl
== NULL
)
1299 rb_connect_sockaddr(F
, (struct sockaddr
*)&client_p
->localClient
->ip
, sizeof(client_p
->localClient
->ip
));
1301 /* Check the status */
1304 /* COMM_ERR_TIMEOUT wont have an errno associated with it,
1305 * the others will.. --fl
1307 if(status
== RB_ERR_TIMEOUT
)
1309 sendto_realops_snomask(SNO_GENERAL
, is_remote_connect(client_p
) ? L_NETWIDE
: L_ALL
,
1310 "Error connecting to %s[%s]: %s",
1314 ilog(L_SERVER
, "Error connecting to %s[%s]: %s",
1315 client_p
->name
, client_p
->sockhost
,
1320 errstr
= strerror(rb_get_sockerr(F
));
1321 sendto_realops_snomask(SNO_GENERAL
, is_remote_connect(client_p
) ? L_NETWIDE
: L_ALL
,
1322 "Error connecting to %s[%s]: %s (%s)",
1325 rb_errstr(status
), errstr
);
1326 ilog(L_SERVER
, "Error connecting to %s[%s]: %s (%s)",
1327 client_p
->name
, client_p
->sockhost
,
1328 rb_errstr(status
), errstr
);
1331 exit_client(client_p
, client_p
, &me
, rb_errstr(status
));
1335 /* COMM_OK, so continue the connection procedure */
1336 /* Get the C/N lines */
1337 if((server_p
= client_p
->localClient
->att_sconf
) == NULL
)
1339 sendto_realops_snomask(SNO_GENERAL
, is_remote_connect(client_p
) ? L_NETWIDE
: L_ALL
, "Lost connect{} block for %s",
1341 exit_client(client_p
, client_p
, &me
, "Lost connect{} block");
1345 /* Next, send the initial handshake */
1346 SetHandshake(client_p
);
1348 if(!EmptyString(server_p
->spasswd
))
1350 sendto_one(client_p
, "PASS %s TS %d :%s",
1351 server_p
->spasswd
, TS_CURRENT
, me
.id
);
1354 /* pass my info to the new server */
1355 send_capabilities(client_p
, default_server_capabs
1356 | (ServerConfCompressed(server_p
) ? CAP_ZIP_SUPPORTED
: 0)
1357 | (ServerConfTb(server_p
) ? CAP_TB
: 0));
1359 sendto_one(client_p
, "SERVER %s 1 :%s%s",
1361 ConfigServerHide
.hidden
? "(H) " : "", me
.info
);
1364 * If we've been marked dead because a send failed, just exit
1365 * here now and save everyone the trouble of us ever existing.
1367 if(IsAnyDead(client_p
))
1369 sendto_realops_snomask(SNO_GENERAL
, is_remote_connect(client_p
) ? L_NETWIDE
: L_ALL
,
1370 "%s went dead during handshake", client_p
->name
);
1371 exit_client(client_p
, client_p
, &me
, "Went dead during handshake");
1375 /* don't move to serv_list yet -- we haven't sent a burst! */
1377 /* If we get here, we're ok, so lets start reading some data */
1378 read_packet(F
, client_p
);