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... */
61 #define INADDR_NONE ((unsigned int) 0xffffffff)
64 #ifndef HAVE_SOCKETPAIR
65 static int inet_socketpair(int d
, int type
, int protocol
, int sv
[2]);
68 int MaxConnectionCount
= 1;
69 int MaxClientCount
= 1;
70 int refresh_user_links
= 0;
72 static char buf
[BUFSIZE
];
75 * list of recognized server capabilities. "TS" is not on the list
76 * because all servers that we talk to already do TS, and the kludged
77 * extra argument to "PASS" takes care of checking that. -orabidoo
79 struct Capability captab
[] = {
86 { "KNOCK", CAP_KNOCK
},
89 { "UNKLN", CAP_UNKLN
},
90 { "CLUSTER", CAP_CLUSTER
},
91 { "ENCAP", CAP_ENCAP
},
92 { "SERVICES", CAP_SERVICE
},
93 { "RSFNC", CAP_RSFNC
},
99 static CNCB serv_connect_callback
;
100 static CNCB serv_connect_ssl_callback
;
103 * hunt_server - Do the basic thing in delivering the message (command)
104 * across the relays to the specific server (server) for
107 * Note: The command is a format string and *MUST* be
108 * of prefixed style (e.g. ":%s COMMAND %s ...").
109 * Command can have only max 8 parameters.
111 * server parv[server] is the parameter identifying the
115 * parv[server] is replaced with the pointer to the
116 * real servername from the matched client (I'm lazy
119 * returns: (see #defines)
122 hunt_server(struct Client
*client_p
, struct Client
*source_p
,
123 const char *command
, int server
, int parc
, const char *parv
[])
125 struct Client
*target_p
;
132 * Assume it's me, if no server
134 if(parc
<= server
|| EmptyString(parv
[server
]) ||
135 match(parv
[server
], me
.name
) || (strcmp(parv
[server
], me
.id
) == 0))
136 return (HUNTED_ISME
);
138 new = LOCAL_COPY(parv
[server
]);
141 * These are to pickup matches that would cause the following
142 * message to go in the wrong direction while doing quick fast
143 * non-matching lookups.
145 if(MyClient(source_p
))
146 target_p
= find_named_client(new);
148 target_p
= find_client(new);
151 if(target_p
->from
== source_p
->from
&& !MyConnect(target_p
))
155 wilds
= (strchr(new, '?') || strchr(new, '*'));
158 * Again, if there are no wild cards involved in the server
159 * name, use the hash lookup
165 if(MyClient(source_p
) || !IsDigit(parv
[server
][0]))
166 sendto_one_numeric(source_p
, ERR_NOSUCHSERVER
,
167 form_str(ERR_NOSUCHSERVER
),
169 return (HUNTED_NOSUCH
);
175 RB_DLINK_FOREACH(ptr
, global_client_list
.head
)
177 if(match(new, ((struct Client
*) (ptr
->data
))->name
))
179 target_p
= ptr
->data
;
188 if(!IsRegistered(target_p
))
190 sendto_one_numeric(source_p
, ERR_NOSUCHSERVER
,
191 form_str(ERR_NOSUCHSERVER
),
193 return HUNTED_NOSUCH
;
196 if(IsMe(target_p
) || MyClient(target_p
))
200 parv
[server
] = get_id(target_p
, target_p
);
202 sendto_one(target_p
, command
, get_id(source_p
, target_p
),
203 parv
[1], parv
[2], parv
[3], parv
[4], parv
[5], parv
[6], parv
[7], parv
[8]);
205 return (HUNTED_PASS
);
208 if(MyClient(source_p
) || !IsDigit(parv
[server
][0]))
209 sendto_one_numeric(source_p
, ERR_NOSUCHSERVER
,
210 form_str(ERR_NOSUCHSERVER
), parv
[server
]);
211 return (HUNTED_NOSUCH
);
215 * try_connections - scan through configuration and try new connections.
216 * Returns the calendar time when the next call to this
217 * function should be made latest. (No harm done if this
218 * is called earlier or later...)
221 try_connections(void *unused
)
223 struct Client
*client_p
;
224 struct server_conf
*server_p
= NULL
;
225 struct server_conf
*tmp_p
;
228 int connecting
= FALSE
;
232 RB_DLINK_FOREACH(ptr
, server_conf_list
.head
)
236 if(ServerConfIllegal(tmp_p
) || !ServerConfAutoconn(tmp_p
))
239 /* don't allow ssl connections if ssl isn't setup */
240 if(ServerConfSSL(tmp_p
) && (!ssl_ok
|| !get_ssld_count()))
243 cltmp
= tmp_p
->class;
246 * Skip this entry if the use of it is still on hold until
247 * future. Otherwise handle this entry (and set it on hold
248 * until next time). Will reset only hold times, if already
249 * made one successfull connection... [this algorithm is
250 * a bit fuzzy... -- msa >;) ]
252 if(tmp_p
->hold
> rb_current_time())
254 if(next
> tmp_p
->hold
|| next
== 0)
259 confrq
= get_con_freq(cltmp
);
260 tmp_p
->hold
= rb_current_time() + confrq
;
263 * Found a CONNECT config with port specified, scan clients
264 * and see if this server is already connected?
266 client_p
= find_server(NULL
, tmp_p
->name
);
268 if(!client_p
&& (CurrUsers(cltmp
) < MaxUsers(cltmp
)) && !connecting
)
272 /* We connect only one at time... */
276 if((next
> tmp_p
->hold
) || (next
== 0))
280 /* TODO: change this to set active flag to 0 when added to event! --Habeeb */
281 if(GlobalSetOptions
.autoconn
== 0)
287 /* move this connect entry to end.. */
288 rb_dlinkDelete(&server_p
->node
, &server_conf_list
);
289 rb_dlinkAddTail(server_p
, &server_p
->node
, &server_conf_list
);
292 * We used to only print this if serv_connect() actually
293 * suceeded, but since rb_tcp_connect() can call the callback
294 * immediately if there is an error, we were getting error messages
295 * in the wrong order. SO, we just print out the activated line,
296 * and let serv_connect() / serv_connect_callback() print an
297 * error afterwards if it fails.
300 #ifndef HIDE_SERVERS_IPS
301 sendto_realops_snomask(SNO_GENERAL
, L_ALL
,
302 "Connection to %s[%s] activated.",
303 server_p
->name
, server_p
->host
);
305 sendto_realops_snomask(SNO_GENERAL
, L_ALL
,
306 "Connection to %s activated",
310 serv_connect(server_p
, 0);
314 check_server(const char *name
, struct Client
*client_p
)
316 struct server_conf
*server_p
= NULL
;
317 struct server_conf
*tmp_p
;
321 s_assert(NULL
!= client_p
);
325 if(!(client_p
->localClient
->passwd
))
328 if(strlen(name
) > HOSTLEN
)
331 RB_DLINK_FOREACH(ptr
, server_conf_list
.head
)
335 if(ServerConfIllegal(tmp_p
))
338 if(!match(tmp_p
->name
, name
))
343 /* XXX: Fix me for IPv6 */
344 /* XXX sockhost is the IPv4 ip as a string */
345 if(match(tmp_p
->host
, client_p
->host
) ||
346 match(tmp_p
->host
, client_p
->sockhost
))
350 if(ServerConfEncrypted(tmp_p
))
352 if(!strcmp(tmp_p
->passwd
, crypt(client_p
->localClient
->passwd
,
359 else if(!strcmp(tmp_p
->passwd
, client_p
->localClient
->passwd
))
370 if(ServerConfSSL(server_p
) && client_p
->localClient
->ssl_ctl
== NULL
)
375 attach_server_conf(client_p
, server_p
);
377 /* clear ZIP/TB if they support but we dont want them */
379 if(!ServerConfCompressed(server_p
))
381 ClearCap(client_p
, CAP_ZIP
);
383 if(!ServerConfTb(server_p
))
384 ClearCap(client_p
, CAP_TB
);
392 * inputs - Client pointer to send to
393 * - int flag of capabilities that this server has
395 * side effects - send the CAPAB line to a server -orabidoo
399 send_capabilities(struct Client
*client_p
, int cap_can_send
)
401 struct Capability
*cap
;
402 char msgbuf
[BUFSIZE
];
408 for (cap
= captab
; cap
->name
; ++cap
)
410 if(cap
->cap
& cap_can_send
)
412 tl
= rb_sprintf(t
, "%s ", cap
->name
);
420 sendto_one(client_p
, "CAPAB :%s", msgbuf
);
425 * input - client to burst to, channel name, list to burst, mode flag
427 * side effects - client is sent a list of +b, or +e, or +I modes
430 burst_modes_TS5(struct Client
*client_p
, char *chname
, rb_dlink_list
*list
, char flag
)
434 char mbuf
[MODEBUFLEN
];
443 mlen
= rb_sprintf(buf
, ":%s MODE %s +", me
.name
, chname
);
449 RB_DLINK_FOREACH(ptr
, list
->head
)
452 tlen
= strlen(banptr
->banstr
) + 3;
455 if(tlen
> MODEBUFLEN
)
458 if((count
>= MAXMODEPARAMS
) || ((cur_len
+ tlen
+ 2) > (BUFSIZE
- 3)))
460 sendto_one(client_p
, "%s%s %s", buf
, mbuf
, pbuf
);
470 pp
+= rb_sprintf(pp
, "%s ", banptr
->banstr
);
476 sendto_one(client_p
, "%s%s %s", buf
, mbuf
, pbuf
);
481 * input - client to burst to, channel name, list to burst, mode flag
483 * side effects - client is sent a list of +b, +e, or +I modes
486 burst_modes_TS6(struct Client
*client_p
, struct Channel
*chptr
,
487 rb_dlink_list
*list
, char flag
)
496 cur_len
= mlen
= rb_sprintf(buf
, ":%s BMASK %ld %s %c :",
497 me
.id
, (long) chptr
->channelts
, chptr
->chname
, flag
);
500 RB_DLINK_FOREACH(ptr
, list
->head
)
504 tlen
= strlen(banptr
->banstr
) + 1;
507 if(cur_len
+ tlen
> BUFSIZE
- 3)
509 /* the one we're trying to send doesnt fit at all! */
516 /* chop off trailing space and send.. */
518 sendto_one(client_p
, "%s", buf
);
523 rb_sprintf(t
, "%s ", banptr
->banstr
);
528 /* cant ever exit the loop above without having modified buf,
529 * chop off trailing space and send.
532 sendto_one(client_p
, "%s", buf
);
538 * inputs - client (server) to send nick towards
539 * - client to send nick for
541 * side effects - NICK message is sent towards given client_p
544 burst_TS5(struct Client
*client_p
)
546 static char ubuf
[12];
547 struct Client
*target_p
;
548 struct Channel
*chptr
;
549 struct membership
*msptr
;
550 hook_data_client hclientinfo
;
551 hook_data_channel hchaninfo
;
558 hclientinfo
.client
= hchaninfo
.client
= client_p
;
560 RB_DLINK_FOREACH(ptr
, global_client_list
.head
)
562 target_p
= ptr
->data
;
564 if(!IsPerson(target_p
))
567 send_umode(NULL
, target_p
, 0, 0, ubuf
);
574 sendto_one(client_p
, "NICK %s %d %ld %s %s %s %s :%s",
575 target_p
->name
, target_p
->hopcount
+ 1,
576 (long) target_p
->tsinfo
, ubuf
,
577 target_p
->username
, target_p
->host
,
578 target_p
->servptr
->name
, target_p
->info
);
580 if(IsDynSpoof(target_p
))
581 sendto_one(client_p
, ":%s ENCAP * REALHOST %s",
582 target_p
->name
, target_p
->orighost
);
583 if(!EmptyString(target_p
->user
->suser
))
584 sendto_one(client_p
, ":%s ENCAP * LOGIN %s",
585 target_p
->name
, target_p
->user
->suser
);
587 if(ConfigFileEntry
.burst_away
&& !EmptyString(target_p
->user
->away
))
588 sendto_one(client_p
, ":%s AWAY :%s",
589 target_p
->name
, target_p
->user
->away
);
591 hclientinfo
.target
= target_p
;
592 call_hook(h_burst_client
, &hclientinfo
);
595 RB_DLINK_FOREACH(ptr
, global_channel_list
.head
)
599 if(*chptr
->chname
!= '#')
602 cur_len
= mlen
= rb_sprintf(buf
, ":%s SJOIN %ld %s %s :", me
.name
,
603 (long) chptr
->channelts
, chptr
->chname
,
604 channel_modes(chptr
, client_p
));
608 RB_DLINK_FOREACH(uptr
, chptr
->members
.head
)
612 tlen
= strlen(msptr
->client_p
->name
) + 1;
618 if(cur_len
+ tlen
>= BUFSIZE
- 3)
622 sendto_one(client_p
, "%s", buf
);
627 rb_sprintf(t
, "%s%s ", find_channel_status(msptr
, 1),
628 msptr
->client_p
->name
);
634 if (rb_dlink_list_length(&chptr
->members
) > 0)
636 /* remove trailing space */
640 sendto_one(client_p
, "%s", buf
);
642 burst_modes_TS5(client_p
, chptr
->chname
, &chptr
->banlist
, 'b');
644 if(IsCapable(client_p
, CAP_EX
))
645 burst_modes_TS5(client_p
, chptr
->chname
, &chptr
->exceptlist
, 'e');
647 if(IsCapable(client_p
, CAP_IE
))
648 burst_modes_TS5(client_p
, chptr
->chname
, &chptr
->invexlist
, 'I');
650 burst_modes_TS5(client_p
, chptr
->chname
, &chptr
->quietlist
, 'q');
652 if(IsCapable(client_p
, CAP_TB
) && chptr
->topic
!= NULL
)
653 sendto_one(client_p
, ":%s TB %s %ld %s%s:%s",
654 me
.name
, chptr
->chname
, (long) chptr
->topic_time
,
655 ConfigChannel
.burst_topicwho
? chptr
->topic_info
: "",
656 ConfigChannel
.burst_topicwho
? " " : "",
659 hchaninfo
.chptr
= chptr
;
660 call_hook(h_burst_channel
, &hchaninfo
);
663 hclientinfo
.target
= NULL
;
664 call_hook(h_burst_finished
, &hclientinfo
);
670 * inputs - client (server) to send nick towards
671 * - client to send nick for
673 * side effects - NICK message is sent towards given client_p
676 burst_TS6(struct Client
*client_p
)
678 static char ubuf
[12];
679 struct Client
*target_p
;
680 struct Channel
*chptr
;
681 struct membership
*msptr
;
682 hook_data_client hclientinfo
;
683 hook_data_channel hchaninfo
;
690 hclientinfo
.client
= hchaninfo
.client
= client_p
;
692 RB_DLINK_FOREACH(ptr
, global_client_list
.head
)
694 target_p
= ptr
->data
;
696 if(!IsPerson(target_p
))
699 send_umode(NULL
, target_p
, 0, 0, ubuf
);
706 if(has_id(target_p
) && IsCapable(client_p
, CAP_EUID
))
707 sendto_one(client_p
, ":%s EUID %s %d %ld %s %s %s %s %s %s %s :%s",
708 target_p
->servptr
->id
, target_p
->name
,
709 target_p
->hopcount
+ 1,
710 (long) target_p
->tsinfo
, ubuf
,
711 target_p
->username
, target_p
->host
,
712 IsIPSpoof(target_p
) ? "0" : target_p
->sockhost
,
714 IsDynSpoof(target_p
) ? target_p
->orighost
: "*",
715 EmptyString(target_p
->user
->suser
) ? "*" : target_p
->user
->suser
,
717 else if(has_id(target_p
))
718 sendto_one(client_p
, ":%s UID %s %d %ld %s %s %s %s %s :%s",
719 target_p
->servptr
->id
, target_p
->name
,
720 target_p
->hopcount
+ 1,
721 (long) target_p
->tsinfo
, ubuf
,
722 target_p
->username
, target_p
->host
,
723 IsIPSpoof(target_p
) ? "0" : target_p
->sockhost
,
724 target_p
->id
, target_p
->info
);
726 sendto_one(client_p
, "NICK %s %d %ld %s %s %s %s :%s",
728 target_p
->hopcount
+ 1,
729 (long) target_p
->tsinfo
,
731 target_p
->username
, target_p
->host
,
732 target_p
->servptr
->name
, target_p
->info
);
734 if(!has_id(target_p
) || !IsCapable(client_p
, CAP_EUID
))
736 if(IsDynSpoof(target_p
))
737 sendto_one(client_p
, ":%s ENCAP * REALHOST %s",
738 use_id(target_p
), target_p
->orighost
);
739 if(!EmptyString(target_p
->user
->suser
))
740 sendto_one(client_p
, ":%s ENCAP * LOGIN %s",
741 use_id(target_p
), target_p
->user
->suser
);
744 if(ConfigFileEntry
.burst_away
&& !EmptyString(target_p
->user
->away
))
745 sendto_one(client_p
, ":%s AWAY :%s",
747 target_p
->user
->away
);
749 hclientinfo
.target
= target_p
;
750 call_hook(h_burst_client
, &hclientinfo
);
753 RB_DLINK_FOREACH(ptr
, global_channel_list
.head
)
757 if(*chptr
->chname
!= '#')
760 cur_len
= mlen
= rb_sprintf(buf
, ":%s SJOIN %ld %s %s :", me
.id
,
761 (long) chptr
->channelts
, chptr
->chname
,
762 channel_modes(chptr
, client_p
));
766 RB_DLINK_FOREACH(uptr
, chptr
->members
.head
)
770 tlen
= strlen(use_id(msptr
->client_p
)) + 1;
776 if(cur_len
+ tlen
>= BUFSIZE
- 3)
779 sendto_one(client_p
, "%s", buf
);
784 rb_sprintf(t
, "%s%s ", find_channel_status(msptr
, 1),
785 use_id(msptr
->client_p
));
791 if (rb_dlink_list_length(&chptr
->members
) > 0)
793 /* remove trailing space */
796 sendto_one(client_p
, "%s", buf
);
798 if(rb_dlink_list_length(&chptr
->banlist
) > 0)
799 burst_modes_TS6(client_p
, chptr
, &chptr
->banlist
, 'b');
801 if(IsCapable(client_p
, CAP_EX
) &&
802 rb_dlink_list_length(&chptr
->exceptlist
) > 0)
803 burst_modes_TS6(client_p
, chptr
, &chptr
->exceptlist
, 'e');
805 if(IsCapable(client_p
, CAP_IE
) &&
806 rb_dlink_list_length(&chptr
->invexlist
) > 0)
807 burst_modes_TS6(client_p
, chptr
, &chptr
->invexlist
, 'I');
809 if(rb_dlink_list_length(&chptr
->quietlist
) > 0)
810 burst_modes_TS6(client_p
, chptr
, &chptr
->quietlist
, 'q');
812 if(IsCapable(client_p
, CAP_TB
) && chptr
->topic
!= NULL
)
813 sendto_one(client_p
, ":%s TB %s %ld %s%s:%s",
814 me
.id
, chptr
->chname
, (long) chptr
->topic_time
,
815 ConfigChannel
.burst_topicwho
? chptr
->topic_info
: "",
816 ConfigChannel
.burst_topicwho
? " " : "",
819 hchaninfo
.chptr
= chptr
;
820 call_hook(h_burst_channel
, &hchaninfo
);
823 hclientinfo
.target
= NULL
;
824 call_hook(h_burst_finished
, &hclientinfo
);
828 * show_capabilities - show current server capabilities
830 * inputs - pointer to an struct Client
831 * output - pointer to static string
832 * side effects - build up string representing capabilities of server listed
835 show_capabilities(struct Client
*target_p
)
837 static char msgbuf
[BUFSIZE
];
838 struct Capability
*cap
;
841 rb_strlcpy(msgbuf
, " TS6", sizeof(msgbuf
));
843 rb_strlcpy(msgbuf
, " TS", sizeof(msgbuf
));
846 rb_strlcat(msgbuf
, " SSL", sizeof(msgbuf
));
848 if(!IsServer(target_p
) || !target_p
->serv
->caps
) /* short circuit if no caps */
851 for (cap
= captab
; cap
->cap
; ++cap
)
853 if(cap
->cap
& target_p
->serv
->caps
)
854 rb_snprintf_append(msgbuf
, sizeof(msgbuf
), " %s", cap
->name
);
863 * inputs - pointer to a struct Client
868 server_estab(struct Client
*client_p
)
870 struct Client
*target_p
;
871 struct server_conf
*server_p
;
872 hook_data_client hdata
;
875 char note
[HOSTLEN
+ 15];
877 s_assert(NULL
!= client_p
);
881 host
= client_p
->name
;
883 if((server_p
= client_p
->localClient
->att_sconf
) == NULL
)
885 /* This shouldn't happen, better tell the ops... -A1kmm */
886 sendto_realops_snomask(SNO_GENERAL
, is_remote_connect(client_p
) ? L_NETWIDE
: L_ALL
,
887 "Warning: Lost connect{} block for server %s!", host
);
888 return exit_client(client_p
, client_p
, client_p
, "Lost connect{} block!");
891 /* We shouldn't have to check this, it should already done before
892 * server_estab is called. -A1kmm
894 if(client_p
->localClient
->passwd
)
896 memset(client_p
->localClient
->passwd
, 0, strlen(client_p
->localClient
->passwd
));
897 rb_free(client_p
->localClient
->passwd
);
898 client_p
->localClient
->passwd
= NULL
;
901 /* Its got identd , since its a server */
904 /* If there is something in the serv_list, it might be this
905 * connecting server..
907 if(!ServerInfo
.hub
&& serv_list
.head
)
909 if(client_p
!= serv_list
.head
->data
|| serv_list
.head
->next
)
911 ServerStats
.is_ref
++;
912 sendto_one(client_p
, "ERROR :I'm a leaf not a hub");
913 return exit_client(client_p
, client_p
, client_p
, "I'm a leaf");
917 if(IsUnknown(client_p
))
920 * jdc -- 1. Use EmptyString(), not [0] index reference.
921 * 2. Check ->spasswd, not ->passwd.
923 if(!EmptyString(server_p
->spasswd
))
925 sendto_one(client_p
, "PASS %s TS %d :%s",
926 server_p
->spasswd
, TS_CURRENT
, me
.id
);
929 /* pass info to new server */
930 send_capabilities(client_p
, default_server_capabs
931 | (ServerConfCompressed(server_p
) ? CAP_ZIP_SUPPORTED
: 0)
932 | (ServerConfTb(server_p
) ? CAP_TB
: 0));
934 sendto_one(client_p
, "SERVER %s 1 :%s%s",
936 ConfigServerHide
.hidden
? "(H) " : "",
937 (me
.info
[0]) ? (me
.info
) : "IRCers United");
940 if(!rb_set_buffers(client_p
->localClient
->F
, READBUF_SIZE
))
941 ilog_error("rb_set_buffers failed for server");
943 /* Enable compression now */
944 if(IsCapable(client_p
, CAP_ZIP
))
946 start_zlib_session(client_p
);
948 sendto_one(client_p
, "SVINFO %d %d 0 :%ld", TS_CURRENT
, TS_MIN
, (long int)rb_current_time());
950 client_p
->servptr
= &me
;
952 if(IsAnyDead(client_p
))
953 return CLIENT_EXITED
;
957 /* Update the capability combination usage counts */
958 set_chcap_usage_counts(client_p
);
960 rb_dlinkAdd(client_p
, &client_p
->lnode
, &me
.serv
->servers
);
961 del_unknown_ip(client_p
);
962 rb_dlinkMoveNode(&client_p
->localClient
->tnode
, &unknown_list
, &serv_list
);
963 rb_dlinkAddTailAlloc(client_p
, &global_serv_list
);
966 add_to_id_hash(client_p
->id
, client_p
);
968 add_to_client_hash(client_p
->name
, client_p
);
969 /* doesnt duplicate client_p->serv if allocated this struct already */
970 make_server(client_p
);
972 client_p
->serv
->caps
= client_p
->localClient
->caps
;
974 if(client_p
->localClient
->fullcaps
)
976 client_p
->serv
->fullcaps
= rb_strdup(client_p
->localClient
->fullcaps
);
977 rb_free(client_p
->localClient
->fullcaps
);
978 client_p
->localClient
->fullcaps
= NULL
;
981 client_p
->serv
->nameinfo
= scache_connect(client_p
->name
, client_p
->info
, IsHidden(client_p
));
982 client_p
->localClient
->firsttime
= rb_current_time();
983 /* fixing eob timings.. -gnp */
985 if((rb_dlink_list_length(&lclient_list
) + rb_dlink_list_length(&serv_list
)) >
986 (unsigned long)MaxConnectionCount
)
987 MaxConnectionCount
= rb_dlink_list_length(&lclient_list
) +
988 rb_dlink_list_length(&serv_list
);
990 /* Show the real host/IP to admins */
991 sendto_realops_snomask(SNO_GENERAL
, L_ALL
,
992 "Link with %s established: (%s) link",
993 get_server_name(client_p
, SHOW_IP
),
994 show_capabilities(client_p
));
996 ilog(L_SERVER
, "Link with %s established: (%s) link",
997 log_client_name(client_p
, SHOW_IP
), show_capabilities(client_p
));
1000 hdata
.target
= client_p
;
1001 call_hook(h_server_introduced
, &hdata
);
1003 rb_snprintf(note
, sizeof(note
), "Server: %s", client_p
->name
);
1004 rb_note(client_p
->localClient
->F
, note
);
1007 ** Old sendto_serv_but_one() call removed because we now
1008 ** need to send different names to different servers
1009 ** (domain name matching) Send new server to other servers.
1011 RB_DLINK_FOREACH(ptr
, serv_list
.head
)
1013 target_p
= ptr
->data
;
1015 if(target_p
== client_p
)
1018 if(has_id(target_p
) && has_id(client_p
))
1020 sendto_one(target_p
, ":%s SID %s 2 %s :%s%s",
1021 me
.id
, client_p
->name
, client_p
->id
,
1022 IsHidden(client_p
) ? "(H) " : "", client_p
->info
);
1024 if(IsCapable(target_p
, CAP_ENCAP
) &&
1025 !EmptyString(client_p
->serv
->fullcaps
))
1026 sendto_one(target_p
, ":%s ENCAP * GCAP :%s",
1027 client_p
->id
, client_p
->serv
->fullcaps
);
1031 sendto_one(target_p
, ":%s SERVER %s 2 :%s%s",
1032 me
.name
, client_p
->name
,
1033 IsHidden(client_p
) ? "(H) " : "", client_p
->info
);
1035 if(IsCapable(target_p
, CAP_ENCAP
) &&
1036 !EmptyString(client_p
->serv
->fullcaps
))
1037 sendto_one(target_p
, ":%s ENCAP * GCAP :%s",
1038 client_p
->name
, client_p
->serv
->fullcaps
);
1043 ** Pass on my client information to the new server
1045 ** First, pass only servers (idea is that if the link gets
1046 ** cancelled beacause the server was already there,
1047 ** there are no NICK's to be cancelled...). Of course,
1048 ** if cancellation occurs, all this info is sent anyway,
1049 ** and I guess the link dies when a read is attempted...? --msa
1051 ** Note: Link cancellation to occur at this point means
1052 ** that at least two servers from my fragment are building
1053 ** up connection this other fragment at the same time, it's
1054 ** a race condition, not the normal way of operation...
1056 ** ALSO NOTE: using the get_client_name for server names--
1057 ** see previous *WARNING*!!! (Also, original inpath
1060 RB_DLINK_FOREACH(ptr
, global_serv_list
.head
)
1062 target_p
= ptr
->data
;
1064 /* target_p->from == target_p for target_p == client_p */
1065 if(IsMe(target_p
) || target_p
->from
== client_p
)
1068 /* presumption, if target has an id, so does its uplink */
1069 if(has_id(client_p
) && has_id(target_p
))
1070 sendto_one(client_p
, ":%s SID %s %d %s :%s%s",
1071 target_p
->servptr
->id
, target_p
->name
,
1072 target_p
->hopcount
+ 1, target_p
->id
,
1073 IsHidden(target_p
) ? "(H) " : "", target_p
->info
);
1075 sendto_one(client_p
, ":%s SERVER %s %d :%s%s",
1076 target_p
->servptr
->name
,
1077 target_p
->name
, target_p
->hopcount
+ 1,
1078 IsHidden(target_p
) ? "(H) " : "", target_p
->info
);
1080 if(IsCapable(client_p
, CAP_ENCAP
) &&
1081 !EmptyString(target_p
->serv
->fullcaps
))
1082 sendto_one(client_p
, ":%s ENCAP * GCAP :%s",
1083 get_id(target_p
, client_p
),
1084 target_p
->serv
->fullcaps
);
1087 if(has_id(client_p
))
1088 burst_TS6(client_p
);
1090 burst_TS5(client_p
);
1092 /* Always send a PING after connect burst is done */
1093 sendto_one(client_p
, "PING :%s", get_id(&me
, client_p
));
1095 free_pre_client(client_p
);
1097 if (!IsCapable(client_p
, CAP_ZIP
))
1098 send_pop_queue(client_p
);
1104 * New server connection code
1105 * Based upon the stuff floating about in s_bsd.c
1110 serv_connect_resolved(struct Client
*client_p
)
1112 struct rb_sockaddr_storage myipnum
;
1113 char vhoststr
[HOSTIPLEN
];
1114 struct server_conf
*server_p
;
1117 if((server_p
= client_p
->localClient
->att_sconf
) == NULL
)
1119 sendto_realops_snomask(SNO_GENERAL
, is_remote_connect(client_p
) ? L_NETWIDE
: L_ALL
, "Lost connect{} block for %s",
1120 get_server_name(client_p
, HIDE_IP
));
1121 exit_client(client_p
, client_p
, &me
, "Lost connect{} block");
1126 if(client_p
->localClient
->ip
.ss_family
== AF_INET6
)
1127 port
= ntohs(((struct sockaddr_in6
*)&client_p
->localClient
->ip
)->sin6_port
);
1130 port
= ntohs(((struct sockaddr_in
*)&client_p
->localClient
->ip
)->sin_port
);
1132 if(ServerConfVhosted(server_p
))
1134 memcpy(&myipnum
, &server_p
->my_ipnum
, sizeof(myipnum
));
1135 ((struct sockaddr_in
*)&myipnum
)->sin_port
= 0;
1136 myipnum
.ss_family
= server_p
->aftype
;
1139 else if(server_p
->aftype
== AF_INET
&& ServerInfo
.specific_ipv4_vhost
)
1141 memcpy(&myipnum
, &ServerInfo
.ip
, sizeof(myipnum
));
1142 ((struct sockaddr_in
*)&myipnum
)->sin_port
= 0;
1143 myipnum
.ss_family
= AF_INET
;
1144 SET_SS_LEN(&myipnum
, sizeof(struct sockaddr_in
));
1148 else if((server_p
->aftype
== AF_INET6
) && ServerInfo
.specific_ipv6_vhost
)
1150 memcpy(&myipnum
, &ServerInfo
.ip6
, sizeof(myipnum
));
1151 ((struct sockaddr_in6
*)&myipnum
)->sin6_port
= 0;
1152 myipnum
.ss_family
= AF_INET6
;
1153 SET_SS_LEN(&myipnum
, sizeof(struct sockaddr_in6
));
1159 ilog(L_SERVER
, "Connecting to %s[%s] port %d (%s)", client_p
->name
, client_p
->sockhost
, port
,
1161 server_p
->aftype
== AF_INET6
? "IPv6" :
1163 (server_p
->aftype
== AF_INET
? "IPv4" : "?"));
1165 if(ServerConfSSL(server_p
))
1167 rb_connect_tcp(client_p
->localClient
->F
, (struct sockaddr
*)&client_p
->localClient
->ip
,
1168 NULL
, 0, serv_connect_ssl_callback
,
1169 client_p
, ConfigFileEntry
.connect_timeout
);
1172 rb_connect_tcp(client_p
->localClient
->F
, (struct sockaddr
*)&client_p
->localClient
->ip
,
1173 NULL
, 0, serv_connect_callback
,
1174 client_p
, ConfigFileEntry
.connect_timeout
);
1179 rb_inet_ntop_sock((struct sockaddr
*)&myipnum
, vhoststr
, sizeof vhoststr
);
1180 ilog(L_SERVER
, "Connecting to %s[%s] port %d (%s) (vhost %s)", client_p
->name
, client_p
->sockhost
, port
,
1182 server_p
->aftype
== AF_INET6
? "IPv6" :
1184 (server_p
->aftype
== AF_INET
? "IPv4" : "?"), vhoststr
);
1187 if(ServerConfSSL(server_p
))
1188 rb_connect_tcp(client_p
->localClient
->F
, (struct sockaddr
*)&client_p
->localClient
->ip
,
1189 (struct sockaddr
*) &myipnum
,
1190 GET_SS_LEN(&myipnum
), serv_connect_ssl_callback
, client_p
,
1191 ConfigFileEntry
.connect_timeout
);
1193 rb_connect_tcp(client_p
->localClient
->F
, (struct sockaddr
*)&client_p
->localClient
->ip
,
1194 (struct sockaddr
*) &myipnum
,
1195 GET_SS_LEN(&myipnum
), serv_connect_callback
, client_p
,
1196 ConfigFileEntry
.connect_timeout
);
1202 serv_connect_dns_callback(void *vptr
, struct DNSReply
*reply
)
1204 struct Client
*client_p
= vptr
;
1207 rb_free(client_p
->localClient
->dnsquery
);
1208 client_p
->localClient
->dnsquery
= NULL
;
1212 sendto_realops_snomask(SNO_GENERAL
, is_remote_connect(client_p
) ? L_NETWIDE
: L_ALL
, "Cannot resolve hostname for %s",
1213 get_server_name(client_p
, HIDE_IP
));
1214 ilog(L_SERVER
, "Cannot resolve hostname for %s",
1215 log_client_name(client_p
, HIDE_IP
));
1216 exit_client(client_p
, client_p
, &me
, "Cannot resolve hostname");
1220 if(reply
->addr
.ss_family
== AF_INET6
)
1221 port
= ((struct sockaddr_in6
*)&client_p
->localClient
->ip
)->sin6_port
;
1224 port
= ((struct sockaddr_in
*)&client_p
->localClient
->ip
)->sin_port
;
1225 memcpy(&client_p
->localClient
->ip
, &reply
->addr
, sizeof(client_p
->localClient
->ip
));
1227 if(reply
->addr
.ss_family
== AF_INET6
)
1228 ((struct sockaddr_in6
*)&client_p
->localClient
->ip
)->sin6_port
= port
;
1231 ((struct sockaddr_in
*)&client_p
->localClient
->ip
)->sin_port
= port
;
1232 /* Set sockhost properly now -- jilles */
1233 rb_inet_ntop_sock((struct sockaddr
*)&client_p
->localClient
->ip
,
1234 client_p
->sockhost
, sizeof client_p
->sockhost
);
1235 serv_connect_resolved(client_p
);
1239 * serv_connect() - initiate a server connection
1241 * inputs - pointer to conf
1242 * - pointer to client doing the connet
1246 * This code initiates a connection to a server. It first checks to make
1247 * sure the given server exists. If this is the case, it creates a socket,
1248 * creates a client, saves the socket information in the client, and
1249 * initiates a connection to the server through rb_connect_tcp(). The
1250 * completion of this goes through serv_completed_connection().
1252 * We return 1 if the connection is attempted, since we don't know whether
1253 * it suceeded or not, and 0 if it fails in here somewhere.
1256 serv_connect(struct server_conf
*server_p
, struct Client
*by
)
1258 struct Client
*client_p
;
1259 struct rb_sockaddr_storage theiripnum
;
1261 char note
[HOSTLEN
+ 10];
1263 s_assert(server_p
!= NULL
);
1264 if(server_p
== NULL
)
1268 * Make sure this server isn't already connected
1270 if((client_p
= find_server(NULL
, server_p
->name
)))
1272 sendto_realops_snomask(SNO_GENERAL
, L_ALL
,
1273 "Server %s already present from %s",
1274 server_p
->name
, get_server_name(client_p
, SHOW_IP
));
1275 if(by
&& IsPerson(by
) && !MyClient(by
))
1276 sendto_one_notice(by
, ":Server %s already present from %s",
1277 server_p
->name
, get_server_name(client_p
, SHOW_IP
));
1281 /* create a socket for the server connection */
1282 if((F
= rb_socket(server_p
->aftype
, SOCK_STREAM
, 0, NULL
)) == NULL
)
1284 ilog_error("opening a stream socket");
1288 rb_snprintf(note
, sizeof note
, "Server: %s", server_p
->name
);
1291 /* Create a local client */
1292 client_p
= make_client(NULL
);
1294 /* Copy in the server, hostname, fd
1295 * The sockhost may be a hostname, this will be corrected later
1298 rb_strlcpy(client_p
->name
, server_p
->name
, sizeof(client_p
->name
));
1299 rb_strlcpy(client_p
->host
, server_p
->host
, sizeof(client_p
->host
));
1300 rb_strlcpy(client_p
->sockhost
, server_p
->host
, sizeof(client_p
->sockhost
));
1301 client_p
->localClient
->F
= F
;
1302 add_to_cli_fd_hash(client_p
);
1305 * Set up the initial server evilness, ripped straight from
1306 * connect_server(), so don't blame me for it being evil.
1310 if(!rb_set_buffers(client_p
->localClient
->F
, READBUF_SIZE
))
1312 ilog_error("setting the buffer size for a server connection");
1316 * Attach config entries to client here rather than in
1317 * serv_connect_callback(). This to avoid null pointer references.
1319 attach_server_conf(client_p
, server_p
);
1322 * at this point we have a connection in progress and C/N lines
1323 * attached to the client, the socket info should be saved in the
1324 * client and it should either be resolved or have a valid address.
1326 * The socket has been connected or connect is in progress.
1328 make_server(client_p
);
1329 if(by
&& IsPerson(by
))
1331 strcpy(client_p
->serv
->by
, by
->name
);
1332 if(client_p
->serv
->user
)
1333 free_user(client_p
->serv
->user
, NULL
);
1334 client_p
->serv
->user
= by
->user
;
1339 strcpy(client_p
->serv
->by
, "AutoConn.");
1340 if(client_p
->serv
->user
)
1341 free_user(client_p
->serv
->user
, NULL
);
1342 client_p
->serv
->user
= NULL
;
1344 SetConnecting(client_p
);
1345 rb_dlinkAddTail(client_p
, &client_p
->node
, &global_client_list
);
1347 if (rb_inet_pton_sock(server_p
->host
, (struct sockaddr
*)&theiripnum
) > 0)
1349 memcpy(&client_p
->localClient
->ip
, &theiripnum
, sizeof(client_p
->localClient
->ip
));
1351 if(theiripnum
.ss_family
== AF_INET6
)
1352 ((struct sockaddr_in6
*)&client_p
->localClient
->ip
)->sin6_port
= htons(server_p
->port
);
1355 ((struct sockaddr_in
*)&client_p
->localClient
->ip
)->sin_port
= htons(server_p
->port
);
1357 return serv_connect_resolved(client_p
);
1362 if(theiripnum
.ss_family
== AF_INET6
)
1363 ((struct sockaddr_in6
*)&client_p
->localClient
->ip
)->sin6_port
= htons(server_p
->port
);
1366 ((struct sockaddr_in
*)&client_p
->localClient
->ip
)->sin_port
= htons(server_p
->port
);
1368 client_p
->localClient
->dnsquery
= rb_malloc(sizeof(struct DNSQuery
));
1369 client_p
->localClient
->dnsquery
->ptr
= client_p
;
1370 client_p
->localClient
->dnsquery
->callback
= serv_connect_dns_callback
;
1371 gethost_byname_type(server_p
->host
, client_p
->localClient
->dnsquery
,
1373 server_p
->aftype
== AF_INET6
? T_AAAA
:
1381 serv_connect_ev(void *data
)
1383 struct Client
*client_p
= data
;
1384 serv_connect_callback(client_p
->localClient
->F
, RB_OK
, client_p
);
1388 serv_connect_ssl_callback(rb_fde_t
*F
, int status
, void *data
)
1390 struct Client
*client_p
= data
;
1394 /* XXX deal with failure */
1397 rb_connect_sockaddr(F
, (struct sockaddr
*)&client_p
->localClient
->ip
, sizeof(client_p
->localClient
->ip
));
1398 rb_socketpair(AF_UNIX
, SOCK_STREAM
, 0, &xF
[0], &xF
[1], "Outgoing ssld connection");
1399 del_from_cli_fd_hash(client_p
);
1400 client_p
->localClient
->F
= xF
[0];
1401 add_to_cli_fd_hash(client_p
);
1403 client_p
->localClient
->ssl_ctl
= start_ssld_connect(F
, xF
[1], rb_get_fd(xF
[0]));
1405 rb_event_addonce("serv_connect_ev", serv_connect_ev
, client_p
, 1);
1409 * serv_connect_callback() - complete a server connection.
1411 * This routine is called after the server connection attempt has
1412 * completed. If unsucessful, an error is sent to ops and the client
1413 * is closed. If sucessful, it goes through the initialisation/check
1414 * procedures, the capabilities are sent, and the socket is then
1415 * marked for reading.
1418 serv_connect_callback(rb_fde_t
*F
, int status
, void *data
)
1420 struct Client
*client_p
= data
;
1421 struct server_conf
*server_p
;
1424 /* First, make sure its a real client! */
1425 s_assert(client_p
!= NULL
);
1426 s_assert(client_p
->localClient
->F
== F
);
1428 if(client_p
== NULL
)
1431 /* while we were waiting for the callback, its possible this already
1434 if(find_server(NULL
, client_p
->name
) != NULL
)
1436 exit_client(client_p
, client_p
, &me
, "Server Exists");
1440 if(client_p
->localClient
->ssl_ctl
== NULL
)
1441 rb_connect_sockaddr(F
, (struct sockaddr
*)&client_p
->localClient
->ip
, sizeof(client_p
->localClient
->ip
));
1443 /* Check the status */
1446 /* COMM_ERR_TIMEOUT wont have an errno associated with it,
1447 * the others will.. --fl
1449 if(status
== RB_ERR_TIMEOUT
)
1451 sendto_realops_snomask(SNO_GENERAL
, is_remote_connect(client_p
) ? L_NETWIDE
: L_ALL
,
1452 "Error connecting to %s[%s]: %s",
1454 #ifdef HIDE_SERVERS_IPS
1460 ilog(L_SERVER
, "Error connecting to %s[%s]: %s",
1461 client_p
->name
, client_p
->sockhost
,
1466 errstr
= strerror(rb_get_sockerr(F
));
1467 sendto_realops_snomask(SNO_GENERAL
, is_remote_connect(client_p
) ? L_NETWIDE
: L_ALL
,
1468 "Error connecting to %s[%s]: %s (%s)",
1470 #ifdef HIDE_SERVERS_IPS
1475 rb_errstr(status
), errstr
);
1476 ilog(L_SERVER
, "Error connecting to %s[%s]: %s (%s)",
1477 client_p
->name
, client_p
->sockhost
,
1478 rb_errstr(status
), errstr
);
1481 exit_client(client_p
, client_p
, &me
, rb_errstr(status
));
1485 /* COMM_OK, so continue the connection procedure */
1486 /* Get the C/N lines */
1487 if((server_p
= client_p
->localClient
->att_sconf
) == NULL
)
1489 sendto_realops_snomask(SNO_GENERAL
, is_remote_connect(client_p
) ? L_NETWIDE
: L_ALL
, "Lost connect{} block for %s",
1490 get_server_name(client_p
, HIDE_IP
));
1491 exit_client(client_p
, client_p
, &me
, "Lost connect{} block");
1495 /* Next, send the initial handshake */
1496 SetHandshake(client_p
);
1498 /* kludge, if we're not using TS6, dont ever send
1499 * ourselves as being TS6 capable.
1501 if(!EmptyString(server_p
->spasswd
))
1503 sendto_one(client_p
, "PASS %s TS %d :%s",
1504 server_p
->spasswd
, TS_CURRENT
, me
.id
);
1507 /* pass my info to the new server */
1508 send_capabilities(client_p
, default_server_capabs
1509 | (ServerConfCompressed(server_p
) ? CAP_ZIP_SUPPORTED
: 0)
1510 | (ServerConfTb(server_p
) ? CAP_TB
: 0));
1512 sendto_one(client_p
, "SERVER %s 1 :%s%s",
1514 ConfigServerHide
.hidden
? "(H) " : "", me
.info
);
1517 * If we've been marked dead because a send failed, just exit
1518 * here now and save everyone the trouble of us ever existing.
1520 if(IsAnyDead(client_p
))
1522 sendto_realops_snomask(SNO_GENERAL
, is_remote_connect(client_p
) ? L_NETWIDE
: L_ALL
,
1523 "%s went dead during handshake", client_p
->name
);
1524 exit_client(client_p
, client_p
, &me
, "Went dead during handshake");
1528 /* don't move to serv_list yet -- we haven't sent a burst! */
1530 /* If we get here, we're ok, so lets start reading some data */
1531 read_packet(F
, client_p
);
1534 #ifndef HAVE_SOCKETPAIR
1536 inet_socketpair(int d
, int type
, int protocol
, int sv
[2])
1538 struct sockaddr_in addr1
, addr2
, addr3
;
1539 int addr3_len
= sizeof(addr3
);
1541 int port_no
= 20000;
1543 if(d
!= AF_INET
|| type
!= SOCK_STREAM
|| protocol
)
1545 errno
= EAFNOSUPPORT
;
1548 if(((sv
[0] = socket(AF_INET
, SOCK_STREAM
, 0)) < 0) || ((sv
[1] = socket(AF_INET
, SOCK_STREAM
, 0)) < 0))
1551 addr1
.sin_port
= htons(port_no
);
1552 addr1
.sin_family
= AF_INET
;
1553 addr1
.sin_addr
.s_addr
= htonl(INADDR_LOOPBACK
);
1554 while ((rc
= bind (sv
[0], (struct sockaddr
*) &addr1
, sizeof (addr1
))) < 0 && errno
== EADDRINUSE
)
1555 addr1
.sin_port
= htons(++port_no
);
1560 if(listen(sv
[0], 1) < 0)
1567 addr2
.sin_port
= htons(port_no
);
1568 addr2
.sin_family
= AF_INET
;
1569 addr2
.sin_addr
.s_addr
= htonl(INADDR_LOOPBACK
);
1570 if(connect (sv
[1], (struct sockaddr
*) &addr2
, sizeof (addr2
)) < 0)
1577 if((fd
= accept(sv
[1], (struct sockaddr
*) &addr3
, &addr3_len
)) < 0)