2 * ircd-ratbox: A slightly useful ircd.
3 * s_serv.c: Server related functions.
5 * Copyright (C) 1990 Jarkko Oikarinen and University of Oulu, Co Center
6 * Copyright (C) 1996-2002 Hybrid Development Team
7 * Copyright (C) 2002-2005 ircd-ratbox development team
9 * This program is free software; you can redistribute it and/or modify
10 * it under the terms of the GNU General Public License as published by
11 * the Free Software Foundation; either version 2 of the License, or
12 * (at your option) any later version.
14 * This program is distributed in the hope that it will be useful,
15 * but WITHOUT ANY WARRANTY; without even the implied warranty of
16 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
17 * GNU General Public License for more details.
19 * You should have received a copy of the GNU General Public License
20 * along with this program; if not, write to the Free Software
21 * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307
24 * $Id: s_serv.c 3550 2007-08-09 06:47:26Z nenolod $
30 #include <openssl/rsa.h>
40 #include "ircd_defs.h"
45 #include "s_newconf.h"
52 #include "channel.h" /* chcap_usage_counts stuff... */
59 #define INADDR_NONE ((unsigned int) 0xffffffff)
62 int MaxConnectionCount
= 1;
63 int MaxClientCount
= 1;
64 int refresh_user_links
= 0;
66 static char buf
[BUFSIZE
];
69 * list of recognized server capabilities. "TS" is not on the list
70 * because all servers that we talk to already do TS, and the kludged
71 * extra argument to "PASS" takes care of checking that. -orabidoo
73 struct Capability captab
[] = {
80 { "KNOCK", CAP_KNOCK
},
83 { "UNKLN", CAP_UNKLN
},
84 { "CLUSTER", CAP_CLUSTER
},
85 { "ENCAP", CAP_ENCAP
},
86 { "SERVICES", CAP_SERVICE
},
87 { "RSFNC", CAP_RSFNC
},
90 { "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
);
396 burst_ban(struct Client
*client_p
)
399 struct ConfItem
*aconf
;
400 const char *type
, *oper
;
401 /* +5 for !,@,{,} and null */
402 char operbuf
[NICKLEN
+ USERLEN
+ HOSTLEN
+ HOSTLEN
+ 5];
406 melen
= strlen(me
.name
);
407 RB_DLINK_FOREACH(ptr
, prop_bans
.head
)
411 /* Skip expired stuff. */
412 if(aconf
->lifetime
< rb_current_time())
414 switch(aconf
->status
& ~CONF_ILLEGAL
)
416 case CONF_KILL
: type
= "K"; break;
417 case CONF_DLINE
: type
= "D"; break;
418 case CONF_XLINE
: type
= "X"; break;
419 case CONF_RESV_NICK
: type
= "R"; break;
420 case CONF_RESV_CHANNEL
: type
= "R"; break;
424 oper
= aconf
->info
.oper
;
425 if(aconf
->flags
& CONF_FLAGS_MYOPER
)
427 /* Our operator{} names may not be meaningful
428 * to other servers, so rewrite to our server
431 rb_strlcpy(operbuf
, aconf
->info
.oper
, sizeof buf
);
432 p
= strrchr(operbuf
, '{');
434 operbuf
+ sizeof operbuf
- p
> (ptrdiff_t)(melen
+ 2))
436 memcpy(p
+ 1, me
.name
, melen
);
442 sendto_one(client_p
, ":%s BAN %s %s %s %lu %d %d %s :%s%s%s",
445 aconf
->user
? aconf
->user
: "*", aconf
->host
,
446 (unsigned long)aconf
->created
,
447 (int)(aconf
->hold
- aconf
->created
),
448 (int)(aconf
->lifetime
- aconf
->created
),
451 aconf
->spasswd
? "|" : "",
452 aconf
->spasswd
? aconf
->spasswd
: "");
458 * input - client to burst to, channel name, list to burst, mode flag
460 * side effects - client is sent a list of +b, +e, or +I modes
463 burst_modes_TS6(struct Client
*client_p
, struct Channel
*chptr
,
464 rb_dlink_list
*list
, char flag
)
473 cur_len
= mlen
= rb_sprintf(buf
, ":%s BMASK %ld %s %c :",
474 me
.id
, (long) chptr
->channelts
, chptr
->chname
, flag
);
477 RB_DLINK_FOREACH(ptr
, list
->head
)
481 tlen
= strlen(banptr
->banstr
) + 1;
484 if(cur_len
+ tlen
> BUFSIZE
- 3)
486 /* the one we're trying to send doesnt fit at all! */
493 /* chop off trailing space and send.. */
495 sendto_one(client_p
, "%s", buf
);
500 rb_sprintf(t
, "%s ", banptr
->banstr
);
505 /* cant ever exit the loop above without having modified buf,
506 * chop off trailing space and send.
509 sendto_one(client_p
, "%s", buf
);
515 * inputs - client (server) to send nick towards
516 * - client to send nick for
518 * side effects - NICK message is sent towards given client_p
521 burst_TS6(struct Client
*client_p
)
523 static char ubuf
[12];
524 struct Client
*target_p
;
525 struct Channel
*chptr
;
526 struct membership
*msptr
;
527 hook_data_client hclientinfo
;
528 hook_data_channel hchaninfo
;
535 hclientinfo
.client
= hchaninfo
.client
= client_p
;
537 RB_DLINK_FOREACH(ptr
, global_client_list
.head
)
539 target_p
= ptr
->data
;
541 if(!IsPerson(target_p
))
544 send_umode(NULL
, target_p
, 0, 0, ubuf
);
551 if(IsCapable(client_p
, CAP_EUID
))
552 sendto_one(client_p
, ":%s EUID %s %d %ld %s %s %s %s %s %s %s :%s",
553 target_p
->servptr
->id
, target_p
->name
,
554 target_p
->hopcount
+ 1,
555 (long) target_p
->tsinfo
, ubuf
,
556 target_p
->username
, target_p
->host
,
557 IsIPSpoof(target_p
) ? "0" : target_p
->sockhost
,
559 IsDynSpoof(target_p
) ? target_p
->orighost
: "*",
560 EmptyString(target_p
->user
->suser
) ? "*" : target_p
->user
->suser
,
563 sendto_one(client_p
, ":%s UID %s %d %ld %s %s %s %s %s :%s",
564 target_p
->servptr
->id
, target_p
->name
,
565 target_p
->hopcount
+ 1,
566 (long) target_p
->tsinfo
, ubuf
,
567 target_p
->username
, target_p
->host
,
568 IsIPSpoof(target_p
) ? "0" : target_p
->sockhost
,
569 target_p
->id
, target_p
->info
);
571 if(!EmptyString(target_p
->certfp
))
572 sendto_one(client_p
, ":%s ENCAP * CERTFP :%s",
573 use_id(target_p
), target_p
->certfp
);
575 if(!IsCapable(client_p
, CAP_EUID
))
577 if(IsDynSpoof(target_p
))
578 sendto_one(client_p
, ":%s ENCAP * REALHOST %s",
579 use_id(target_p
), target_p
->orighost
);
580 if(!EmptyString(target_p
->user
->suser
))
581 sendto_one(client_p
, ":%s ENCAP * LOGIN %s",
582 use_id(target_p
), target_p
->user
->suser
);
585 if(ConfigFileEntry
.burst_away
&& !EmptyString(target_p
->user
->away
))
586 sendto_one(client_p
, ":%s AWAY :%s",
588 target_p
->user
->away
);
590 hclientinfo
.target
= target_p
;
591 call_hook(h_burst_client
, &hclientinfo
);
594 RB_DLINK_FOREACH(ptr
, global_channel_list
.head
)
598 if(*chptr
->chname
!= '#')
601 cur_len
= mlen
= rb_sprintf(buf
, ":%s SJOIN %ld %s %s :", me
.id
,
602 (long) chptr
->channelts
, chptr
->chname
,
603 channel_modes(chptr
, client_p
));
607 RB_DLINK_FOREACH(uptr
, chptr
->members
.head
)
611 tlen
= strlen(use_id(msptr
->client_p
)) + 1;
617 if(cur_len
+ tlen
>= BUFSIZE
- 3)
620 sendto_one(client_p
, "%s", buf
);
625 rb_sprintf(t
, "%s%s ", find_channel_status(msptr
, 1),
626 use_id(msptr
->client_p
));
632 if (rb_dlink_list_length(&chptr
->members
) > 0)
634 /* remove trailing space */
637 sendto_one(client_p
, "%s", buf
);
639 if(rb_dlink_list_length(&chptr
->banlist
) > 0)
640 burst_modes_TS6(client_p
, chptr
, &chptr
->banlist
, 'b');
642 if(IsCapable(client_p
, CAP_EX
) &&
643 rb_dlink_list_length(&chptr
->exceptlist
) > 0)
644 burst_modes_TS6(client_p
, chptr
, &chptr
->exceptlist
, 'e');
646 if(IsCapable(client_p
, CAP_IE
) &&
647 rb_dlink_list_length(&chptr
->invexlist
) > 0)
648 burst_modes_TS6(client_p
, chptr
, &chptr
->invexlist
, 'I');
650 if(rb_dlink_list_length(&chptr
->quietlist
) > 0)
651 burst_modes_TS6(client_p
, chptr
, &chptr
->quietlist
, 'q');
653 if(IsCapable(client_p
, CAP_TB
) && chptr
->topic
!= NULL
)
654 sendto_one(client_p
, ":%s TB %s %ld %s%s:%s",
655 me
.id
, chptr
->chname
, (long) chptr
->topic_time
,
656 ConfigChannel
.burst_topicwho
? chptr
->topic_info
: "",
657 ConfigChannel
.burst_topicwho
? " " : "",
660 hchaninfo
.chptr
= chptr
;
661 call_hook(h_burst_channel
, &hchaninfo
);
664 hclientinfo
.target
= NULL
;
665 call_hook(h_burst_finished
, &hclientinfo
);
669 * show_capabilities - show current server capabilities
671 * inputs - pointer to an struct Client
672 * output - pointer to static string
673 * side effects - build up string representing capabilities of server listed
676 show_capabilities(struct Client
*target_p
)
678 static char msgbuf
[BUFSIZE
];
679 struct Capability
*cap
;
682 rb_strlcpy(msgbuf
, " TS6", sizeof(msgbuf
));
685 rb_strlcat(msgbuf
, " SSL", sizeof(msgbuf
));
687 if(!IsServer(target_p
) || !target_p
->serv
->caps
) /* short circuit if no caps */
690 for (cap
= captab
; cap
->cap
; ++cap
)
692 if(cap
->cap
& target_p
->serv
->caps
)
693 rb_snprintf_append(msgbuf
, sizeof(msgbuf
), " %s", cap
->name
);
702 * inputs - pointer to a struct Client
707 server_estab(struct Client
*client_p
)
709 struct Client
*target_p
;
710 struct server_conf
*server_p
;
711 hook_data_client hdata
;
714 char note
[HOSTLEN
+ 15];
716 s_assert(NULL
!= client_p
);
720 host
= client_p
->name
;
722 if((server_p
= client_p
->localClient
->att_sconf
) == NULL
)
724 /* This shouldn't happen, better tell the ops... -A1kmm */
725 sendto_realops_snomask(SNO_GENERAL
, is_remote_connect(client_p
) ? L_NETWIDE
: L_ALL
,
726 "Warning: Lost connect{} block for server %s!", host
);
727 return exit_client(client_p
, client_p
, client_p
, "Lost connect{} block!");
730 /* We shouldn't have to check this, it should already done before
731 * server_estab is called. -A1kmm
733 if(client_p
->localClient
->passwd
)
735 memset(client_p
->localClient
->passwd
, 0, strlen(client_p
->localClient
->passwd
));
736 rb_free(client_p
->localClient
->passwd
);
737 client_p
->localClient
->passwd
= NULL
;
740 /* Its got identd , since its a server */
743 /* If there is something in the serv_list, it might be this
744 * connecting server..
746 if(!ServerInfo
.hub
&& serv_list
.head
)
748 if(client_p
!= serv_list
.head
->data
|| serv_list
.head
->next
)
750 ServerStats
.is_ref
++;
751 sendto_one(client_p
, "ERROR :I'm a leaf not a hub");
752 return exit_client(client_p
, client_p
, client_p
, "I'm a leaf");
756 if(IsUnknown(client_p
))
759 * jdc -- 1. Use EmptyString(), not [0] index reference.
760 * 2. Check ->spasswd, not ->passwd.
762 if(!EmptyString(server_p
->spasswd
))
764 sendto_one(client_p
, "PASS %s TS %d :%s",
765 server_p
->spasswd
, TS_CURRENT
, me
.id
);
768 /* pass info to new server */
769 send_capabilities(client_p
, default_server_capabs
770 | (ServerConfCompressed(server_p
) ? CAP_ZIP_SUPPORTED
: 0)
771 | (ServerConfTb(server_p
) ? CAP_TB
: 0));
773 sendto_one(client_p
, "SERVER %s 1 :%s%s",
775 ConfigServerHide
.hidden
? "(H) " : "",
776 (me
.info
[0]) ? (me
.info
) : "IRCers United");
779 if(!rb_set_buffers(client_p
->localClient
->F
, READBUF_SIZE
))
780 ilog_error("rb_set_buffers failed for server");
782 /* Enable compression now */
783 if(IsCapable(client_p
, CAP_ZIP
))
785 start_zlib_session(client_p
);
787 sendto_one(client_p
, "SVINFO %d %d 0 :%ld", TS_CURRENT
, TS_MIN
, (long int)rb_current_time());
789 client_p
->servptr
= &me
;
791 if(IsAnyDead(client_p
))
792 return CLIENT_EXITED
;
796 /* Update the capability combination usage counts */
797 set_chcap_usage_counts(client_p
);
799 rb_dlinkAdd(client_p
, &client_p
->lnode
, &me
.serv
->servers
);
800 rb_dlinkMoveNode(&client_p
->localClient
->tnode
, &unknown_list
, &serv_list
);
801 rb_dlinkAddTailAlloc(client_p
, &global_serv_list
);
804 add_to_id_hash(client_p
->id
, client_p
);
806 add_to_client_hash(client_p
->name
, client_p
);
807 /* doesnt duplicate client_p->serv if allocated this struct already */
808 make_server(client_p
);
810 client_p
->serv
->caps
= client_p
->localClient
->caps
;
812 if(client_p
->localClient
->fullcaps
)
814 client_p
->serv
->fullcaps
= rb_strdup(client_p
->localClient
->fullcaps
);
815 rb_free(client_p
->localClient
->fullcaps
);
816 client_p
->localClient
->fullcaps
= NULL
;
819 client_p
->serv
->nameinfo
= scache_connect(client_p
->name
, client_p
->info
, IsHidden(client_p
));
820 client_p
->localClient
->firsttime
= rb_current_time();
821 /* fixing eob timings.. -gnp */
823 if((rb_dlink_list_length(&lclient_list
) + rb_dlink_list_length(&serv_list
)) >
824 (unsigned long)MaxConnectionCount
)
825 MaxConnectionCount
= rb_dlink_list_length(&lclient_list
) +
826 rb_dlink_list_length(&serv_list
);
828 /* Show the real host/IP to admins */
829 sendto_realops_snomask(SNO_GENERAL
, L_ALL
,
830 "Link with %s established: (%s) link",
832 show_capabilities(client_p
));
834 ilog(L_SERVER
, "Link with %s established: (%s) link",
835 log_client_name(client_p
, SHOW_IP
), show_capabilities(client_p
));
838 hdata
.target
= client_p
;
839 call_hook(h_server_introduced
, &hdata
);
841 rb_snprintf(note
, sizeof(note
), "Server: %s", client_p
->name
);
842 rb_note(client_p
->localClient
->F
, note
);
845 ** Old sendto_serv_but_one() call removed because we now
846 ** need to send different names to different servers
847 ** (domain name matching) Send new server to other servers.
849 RB_DLINK_FOREACH(ptr
, serv_list
.head
)
851 target_p
= ptr
->data
;
853 if(target_p
== client_p
)
856 if(has_id(target_p
) && has_id(client_p
))
858 sendto_one(target_p
, ":%s SID %s 2 %s :%s%s",
859 me
.id
, client_p
->name
, client_p
->id
,
860 IsHidden(client_p
) ? "(H) " : "", client_p
->info
);
862 if(IsCapable(target_p
, CAP_ENCAP
) &&
863 !EmptyString(client_p
->serv
->fullcaps
))
864 sendto_one(target_p
, ":%s ENCAP * GCAP :%s",
865 client_p
->id
, client_p
->serv
->fullcaps
);
869 sendto_one(target_p
, ":%s SERVER %s 2 :%s%s",
870 me
.name
, client_p
->name
,
871 IsHidden(client_p
) ? "(H) " : "", client_p
->info
);
873 if(IsCapable(target_p
, CAP_ENCAP
) &&
874 !EmptyString(client_p
->serv
->fullcaps
))
875 sendto_one(target_p
, ":%s ENCAP * GCAP :%s",
876 client_p
->name
, client_p
->serv
->fullcaps
);
881 ** Pass on my client information to the new server
883 ** First, pass only servers (idea is that if the link gets
884 ** cancelled beacause the server was already there,
885 ** there are no NICK's to be cancelled...). Of course,
886 ** if cancellation occurs, all this info is sent anyway,
887 ** and I guess the link dies when a read is attempted...? --msa
889 ** Note: Link cancellation to occur at this point means
890 ** that at least two servers from my fragment are building
891 ** up connection this other fragment at the same time, it's
892 ** a race condition, not the normal way of operation...
894 ** ALSO NOTE: using the get_client_name for server names--
895 ** see previous *WARNING*!!! (Also, original inpath
898 RB_DLINK_FOREACH(ptr
, global_serv_list
.head
)
900 target_p
= ptr
->data
;
902 /* target_p->from == target_p for target_p == client_p */
903 if(IsMe(target_p
) || target_p
->from
== client_p
)
906 /* presumption, if target has an id, so does its uplink */
907 if(has_id(client_p
) && has_id(target_p
))
908 sendto_one(client_p
, ":%s SID %s %d %s :%s%s",
909 target_p
->servptr
->id
, target_p
->name
,
910 target_p
->hopcount
+ 1, target_p
->id
,
911 IsHidden(target_p
) ? "(H) " : "", target_p
->info
);
913 sendto_one(client_p
, ":%s SERVER %s %d :%s%s",
914 target_p
->servptr
->name
,
915 target_p
->name
, target_p
->hopcount
+ 1,
916 IsHidden(target_p
) ? "(H) " : "", target_p
->info
);
918 if(IsCapable(client_p
, CAP_ENCAP
) &&
919 !EmptyString(target_p
->serv
->fullcaps
))
920 sendto_one(client_p
, ":%s ENCAP * GCAP :%s",
921 get_id(target_p
, client_p
),
922 target_p
->serv
->fullcaps
);
925 if(IsCapable(client_p
, CAP_BAN
))
930 /* Always send a PING after connect burst is done */
931 sendto_one(client_p
, "PING :%s", get_id(&me
, client_p
));
933 free_pre_client(client_p
);
935 send_pop_queue(client_p
);
941 * New server connection code
942 * Based upon the stuff floating about in s_bsd.c
947 serv_connect_resolved(struct Client
*client_p
)
949 struct rb_sockaddr_storage myipnum
;
950 char vhoststr
[HOSTIPLEN
];
951 struct server_conf
*server_p
;
954 if((server_p
= client_p
->localClient
->att_sconf
) == NULL
)
956 sendto_realops_snomask(SNO_GENERAL
, is_remote_connect(client_p
) ? L_NETWIDE
: L_ALL
, "Lost connect{} block for %s",
958 exit_client(client_p
, client_p
, &me
, "Lost connect{} block");
963 if(client_p
->localClient
->ip
.ss_family
== AF_INET6
)
964 port
= ntohs(((struct sockaddr_in6
*)&client_p
->localClient
->ip
)->sin6_port
);
967 port
= ntohs(((struct sockaddr_in
*)&client_p
->localClient
->ip
)->sin_port
);
969 if(ServerConfVhosted(server_p
))
971 memcpy(&myipnum
, &server_p
->my_ipnum
, sizeof(myipnum
));
972 ((struct sockaddr_in
*)&myipnum
)->sin_port
= 0;
973 myipnum
.ss_family
= server_p
->aftype
;
976 else if(server_p
->aftype
== AF_INET
&& ServerInfo
.specific_ipv4_vhost
)
978 memcpy(&myipnum
, &ServerInfo
.ip
, sizeof(myipnum
));
979 ((struct sockaddr_in
*)&myipnum
)->sin_port
= 0;
980 myipnum
.ss_family
= AF_INET
;
981 SET_SS_LEN(&myipnum
, sizeof(struct sockaddr_in
));
985 else if((server_p
->aftype
== AF_INET6
) && ServerInfo
.specific_ipv6_vhost
)
987 memcpy(&myipnum
, &ServerInfo
.ip6
, sizeof(myipnum
));
988 ((struct sockaddr_in6
*)&myipnum
)->sin6_port
= 0;
989 myipnum
.ss_family
= AF_INET6
;
990 SET_SS_LEN(&myipnum
, sizeof(struct sockaddr_in6
));
996 ilog(L_SERVER
, "Connecting to %s[%s] port %d (%s)", client_p
->name
, client_p
->sockhost
, port
,
998 server_p
->aftype
== AF_INET6
? "IPv6" :
1000 (server_p
->aftype
== AF_INET
? "IPv4" : "?"));
1002 if(ServerConfSSL(server_p
))
1004 rb_connect_tcp(client_p
->localClient
->F
, (struct sockaddr
*)&client_p
->localClient
->ip
,
1005 NULL
, 0, serv_connect_ssl_callback
,
1006 client_p
, ConfigFileEntry
.connect_timeout
);
1009 rb_connect_tcp(client_p
->localClient
->F
, (struct sockaddr
*)&client_p
->localClient
->ip
,
1010 NULL
, 0, serv_connect_callback
,
1011 client_p
, ConfigFileEntry
.connect_timeout
);
1016 rb_inet_ntop_sock((struct sockaddr
*)&myipnum
, vhoststr
, sizeof vhoststr
);
1017 ilog(L_SERVER
, "Connecting to %s[%s] port %d (%s) (vhost %s)", client_p
->name
, client_p
->sockhost
, port
,
1019 server_p
->aftype
== AF_INET6
? "IPv6" :
1021 (server_p
->aftype
== AF_INET
? "IPv4" : "?"), vhoststr
);
1024 if(ServerConfSSL(server_p
))
1025 rb_connect_tcp(client_p
->localClient
->F
, (struct sockaddr
*)&client_p
->localClient
->ip
,
1026 (struct sockaddr
*) &myipnum
,
1027 GET_SS_LEN(&myipnum
), serv_connect_ssl_callback
, client_p
,
1028 ConfigFileEntry
.connect_timeout
);
1030 rb_connect_tcp(client_p
->localClient
->F
, (struct sockaddr
*)&client_p
->localClient
->ip
,
1031 (struct sockaddr
*) &myipnum
,
1032 GET_SS_LEN(&myipnum
), serv_connect_callback
, client_p
,
1033 ConfigFileEntry
.connect_timeout
);
1039 serv_connect_dns_callback(void *vptr
, struct DNSReply
*reply
)
1041 struct Client
*client_p
= vptr
;
1044 rb_free(client_p
->localClient
->dnsquery
);
1045 client_p
->localClient
->dnsquery
= NULL
;
1049 sendto_realops_snomask(SNO_GENERAL
, is_remote_connect(client_p
) ? L_NETWIDE
: L_ALL
, "Cannot resolve hostname for %s",
1051 ilog(L_SERVER
, "Cannot resolve hostname for %s",
1052 log_client_name(client_p
, HIDE_IP
));
1053 exit_client(client_p
, client_p
, &me
, "Cannot resolve hostname");
1057 if(reply
->addr
.ss_family
== AF_INET6
)
1058 port
= ((struct sockaddr_in6
*)&client_p
->localClient
->ip
)->sin6_port
;
1061 port
= ((struct sockaddr_in
*)&client_p
->localClient
->ip
)->sin_port
;
1062 memcpy(&client_p
->localClient
->ip
, &reply
->addr
, sizeof(client_p
->localClient
->ip
));
1064 if(reply
->addr
.ss_family
== AF_INET6
)
1065 ((struct sockaddr_in6
*)&client_p
->localClient
->ip
)->sin6_port
= port
;
1068 ((struct sockaddr_in
*)&client_p
->localClient
->ip
)->sin_port
= port
;
1069 /* Set sockhost properly now -- jilles */
1070 rb_inet_ntop_sock((struct sockaddr
*)&client_p
->localClient
->ip
,
1071 client_p
->sockhost
, sizeof client_p
->sockhost
);
1072 serv_connect_resolved(client_p
);
1076 * serv_connect() - initiate a server connection
1078 * inputs - pointer to conf
1079 * - pointer to client doing the connet
1083 * This code initiates a connection to a server. It first checks to make
1084 * sure the given server exists. If this is the case, it creates a socket,
1085 * creates a client, saves the socket information in the client, and
1086 * initiates a connection to the server through rb_connect_tcp(). The
1087 * completion of this goes through serv_completed_connection().
1089 * We return 1 if the connection is attempted, since we don't know whether
1090 * it suceeded or not, and 0 if it fails in here somewhere.
1093 serv_connect(struct server_conf
*server_p
, struct Client
*by
)
1095 struct Client
*client_p
;
1096 struct rb_sockaddr_storage theiripnum
;
1098 char note
[HOSTLEN
+ 10];
1100 s_assert(server_p
!= NULL
);
1101 if(server_p
== NULL
)
1105 * Make sure this server isn't already connected
1107 if((client_p
= find_server(NULL
, server_p
->name
)))
1109 sendto_realops_snomask(SNO_GENERAL
, L_ALL
,
1110 "Server %s already present from %s",
1111 server_p
->name
, client_p
->name
);
1112 if(by
&& IsPerson(by
) && !MyClient(by
))
1113 sendto_one_notice(by
, ":Server %s already present from %s",
1114 server_p
->name
, client_p
->name
);
1118 /* create a socket for the server connection */
1119 if((F
= rb_socket(server_p
->aftype
, SOCK_STREAM
, 0, NULL
)) == NULL
)
1121 ilog_error("opening a stream socket");
1125 rb_snprintf(note
, sizeof note
, "Server: %s", server_p
->name
);
1128 /* Create a local client */
1129 client_p
= make_client(NULL
);
1131 /* Copy in the server, hostname, fd
1132 * The sockhost may be a hostname, this will be corrected later
1135 rb_strlcpy(client_p
->name
, server_p
->name
, sizeof(client_p
->name
));
1136 rb_strlcpy(client_p
->host
, server_p
->host
, sizeof(client_p
->host
));
1137 rb_strlcpy(client_p
->sockhost
, server_p
->host
, sizeof(client_p
->sockhost
));
1138 client_p
->localClient
->F
= F
;
1139 add_to_cli_fd_hash(client_p
);
1142 * Set up the initial server evilness, ripped straight from
1143 * connect_server(), so don't blame me for it being evil.
1147 if(!rb_set_buffers(client_p
->localClient
->F
, READBUF_SIZE
))
1149 ilog_error("setting the buffer size for a server connection");
1153 * Attach config entries to client here rather than in
1154 * serv_connect_callback(). This to avoid null pointer references.
1156 attach_server_conf(client_p
, server_p
);
1159 * at this point we have a connection in progress and C/N lines
1160 * attached to the client, the socket info should be saved in the
1161 * client and it should either be resolved or have a valid address.
1163 * The socket has been connected or connect is in progress.
1165 make_server(client_p
);
1166 if(by
&& IsPerson(by
))
1168 strcpy(client_p
->serv
->by
, by
->name
);
1169 if(client_p
->serv
->user
)
1170 free_user(client_p
->serv
->user
, NULL
);
1171 client_p
->serv
->user
= by
->user
;
1176 strcpy(client_p
->serv
->by
, "AutoConn.");
1177 if(client_p
->serv
->user
)
1178 free_user(client_p
->serv
->user
, NULL
);
1179 client_p
->serv
->user
= NULL
;
1181 SetConnecting(client_p
);
1182 rb_dlinkAddTail(client_p
, &client_p
->node
, &global_client_list
);
1184 if (rb_inet_pton_sock(server_p
->host
, (struct sockaddr
*)&theiripnum
) > 0)
1186 memcpy(&client_p
->localClient
->ip
, &theiripnum
, sizeof(client_p
->localClient
->ip
));
1188 if(theiripnum
.ss_family
== AF_INET6
)
1189 ((struct sockaddr_in6
*)&client_p
->localClient
->ip
)->sin6_port
= htons(server_p
->port
);
1192 ((struct sockaddr_in
*)&client_p
->localClient
->ip
)->sin_port
= htons(server_p
->port
);
1194 return serv_connect_resolved(client_p
);
1199 if(theiripnum
.ss_family
== AF_INET6
)
1200 ((struct sockaddr_in6
*)&client_p
->localClient
->ip
)->sin6_port
= htons(server_p
->port
);
1203 ((struct sockaddr_in
*)&client_p
->localClient
->ip
)->sin_port
= htons(server_p
->port
);
1205 client_p
->localClient
->dnsquery
= rb_malloc(sizeof(struct DNSQuery
));
1206 client_p
->localClient
->dnsquery
->ptr
= client_p
;
1207 client_p
->localClient
->dnsquery
->callback
= serv_connect_dns_callback
;
1208 gethost_byname_type(server_p
->host
, client_p
->localClient
->dnsquery
,
1210 server_p
->aftype
== AF_INET6
? T_AAAA
:
1218 serv_connect_ssl_callback(rb_fde_t
*F
, int status
, void *data
)
1220 struct Client
*client_p
= data
;
1222 rb_connect_sockaddr(F
, (struct sockaddr
*)&client_p
->localClient
->ip
, sizeof(client_p
->localClient
->ip
));
1225 /* Print error message, just like non-SSL. */
1226 serv_connect_callback(F
, status
, data
);
1229 if(rb_socketpair(AF_UNIX
, SOCK_STREAM
, 0, &xF
[0], &xF
[1], "Outgoing ssld connection") == -1)
1231 ilog_error("rb_socketpair failed for server");
1232 serv_connect_callback(F
, RB_ERROR
, data
);
1236 del_from_cli_fd_hash(client_p
);
1237 client_p
->localClient
->F
= xF
[0];
1238 add_to_cli_fd_hash(client_p
);
1240 client_p
->localClient
->ssl_ctl
= start_ssld_connect(F
, xF
[1], rb_get_fd(xF
[0]));
1242 serv_connect_callback(client_p
->localClient
->F
, RB_OK
, client_p
);
1246 * serv_connect_callback() - complete a server connection.
1248 * This routine is called after the server connection attempt has
1249 * completed. If unsucessful, an error is sent to ops and the client
1250 * is closed. If sucessful, it goes through the initialisation/check
1251 * procedures, the capabilities are sent, and the socket is then
1252 * marked for reading.
1255 serv_connect_callback(rb_fde_t
*F
, int status
, void *data
)
1257 struct Client
*client_p
= data
;
1258 struct server_conf
*server_p
;
1261 /* First, make sure its a real client! */
1262 s_assert(client_p
!= NULL
);
1263 s_assert(client_p
->localClient
->F
== F
);
1265 if(client_p
== NULL
)
1268 /* while we were waiting for the callback, its possible this already
1271 if(find_server(NULL
, client_p
->name
) != NULL
)
1273 exit_client(client_p
, client_p
, &me
, "Server Exists");
1277 if(client_p
->localClient
->ssl_ctl
== NULL
)
1278 rb_connect_sockaddr(F
, (struct sockaddr
*)&client_p
->localClient
->ip
, sizeof(client_p
->localClient
->ip
));
1280 /* Check the status */
1283 /* COMM_ERR_TIMEOUT wont have an errno associated with it,
1284 * the others will.. --fl
1286 if(status
== RB_ERR_TIMEOUT
)
1288 sendto_realops_snomask(SNO_GENERAL
, is_remote_connect(client_p
) ? L_NETWIDE
: L_ALL
,
1289 "Error connecting to %s[%s]: %s",
1293 ilog(L_SERVER
, "Error connecting to %s[%s]: %s",
1294 client_p
->name
, client_p
->sockhost
,
1299 errstr
= strerror(rb_get_sockerr(F
));
1300 sendto_realops_snomask(SNO_GENERAL
, is_remote_connect(client_p
) ? L_NETWIDE
: L_ALL
,
1301 "Error connecting to %s[%s]: %s (%s)",
1304 rb_errstr(status
), errstr
);
1305 ilog(L_SERVER
, "Error connecting to %s[%s]: %s (%s)",
1306 client_p
->name
, client_p
->sockhost
,
1307 rb_errstr(status
), errstr
);
1310 exit_client(client_p
, client_p
, &me
, rb_errstr(status
));
1314 /* COMM_OK, so continue the connection procedure */
1315 /* Get the C/N lines */
1316 if((server_p
= client_p
->localClient
->att_sconf
) == NULL
)
1318 sendto_realops_snomask(SNO_GENERAL
, is_remote_connect(client_p
) ? L_NETWIDE
: L_ALL
, "Lost connect{} block for %s",
1320 exit_client(client_p
, client_p
, &me
, "Lost connect{} block");
1324 /* Next, send the initial handshake */
1325 SetHandshake(client_p
);
1327 if(!EmptyString(server_p
->spasswd
))
1329 sendto_one(client_p
, "PASS %s TS %d :%s",
1330 server_p
->spasswd
, TS_CURRENT
, me
.id
);
1333 /* pass my info to the new server */
1334 send_capabilities(client_p
, default_server_capabs
1335 | (ServerConfCompressed(server_p
) ? CAP_ZIP_SUPPORTED
: 0)
1336 | (ServerConfTb(server_p
) ? CAP_TB
: 0));
1338 sendto_one(client_p
, "SERVER %s 1 :%s%s",
1340 ConfigServerHide
.hidden
? "(H) " : "", me
.info
);
1343 * If we've been marked dead because a send failed, just exit
1344 * here now and save everyone the trouble of us ever existing.
1346 if(IsAnyDead(client_p
))
1348 sendto_realops_snomask(SNO_GENERAL
, is_remote_connect(client_p
) ? L_NETWIDE
: L_ALL
,
1349 "%s went dead during handshake", client_p
->name
);
1350 exit_client(client_p
, client_p
, &me
, "Went dead during handshake");
1354 /* don't move to serv_list yet -- we haven't sent a burst! */
1356 /* If we get here, we're ok, so lets start reading some data */
1357 read_packet(F
, client_p
);