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>
38 #include "irc_string.h"
39 #include "sprintf_irc.h"
41 #include "ircd_defs.h"
46 #include "s_newconf.h"
53 #include "channel.h" /* chcap_usage_counts stuff... */
62 #define INADDR_NONE ((unsigned int) 0xffffffff)
65 #ifndef HAVE_SOCKETPAIR
66 static int inet_socketpair(int d
, int type
, int protocol
, int sv
[2]);
69 int MaxConnectionCount
= 1;
70 int MaxClientCount
= 1;
71 int refresh_user_links
= 0;
73 static char buf
[BUFSIZE
];
76 * list of recognized server capabilities. "TS" is not on the list
77 * because all servers that we talk to already do TS, and the kludged
78 * extra argument to "PASS" takes care of checking that. -orabidoo
80 struct Capability captab
[] = {
88 { "KNOCK", CAP_KNOCK
},
91 { "UNKLN", CAP_UNKLN
},
92 { "CLUSTER", CAP_CLUSTER
},
93 { "ENCAP", CAP_ENCAP
},
94 { "SERVICES", CAP_SERVICE
},
95 { "RSFNC", CAP_RSFNC
},
101 static CNCB serv_connect_callback
;
102 static CNCB serv_connect_ssl_callback
;
105 * hunt_server - Do the basic thing in delivering the message (command)
106 * across the relays to the specific server (server) for
109 * Note: The command is a format string and *MUST* be
110 * of prefixed style (e.g. ":%s COMMAND %s ...").
111 * Command can have only max 8 parameters.
113 * server parv[server] is the parameter identifying the
117 * parv[server] is replaced with the pointer to the
118 * real servername from the matched client (I'm lazy
121 * returns: (see #defines)
124 hunt_server(struct Client
*client_p
, struct Client
*source_p
,
125 const char *command
, int server
, int parc
, const char *parv
[])
127 struct Client
*target_p
;
134 * Assume it's me, if no server
136 if(parc
<= server
|| EmptyString(parv
[server
]) ||
137 match(parv
[server
], me
.name
) || (strcmp(parv
[server
], me
.id
) == 0))
138 return (HUNTED_ISME
);
140 new = LOCAL_COPY(parv
[server
]);
143 * These are to pickup matches that would cause the following
144 * message to go in the wrong direction while doing quick fast
145 * non-matching lookups.
147 if(MyClient(source_p
))
148 target_p
= find_named_client(new);
150 target_p
= find_client(new);
153 if(target_p
->from
== source_p
->from
&& !MyConnect(target_p
))
157 wilds
= (strchr(new, '?') || strchr(new, '*'));
160 * Again, if there are no wild cards involved in the server
161 * name, use the hash lookup
167 if(MyClient(source_p
) || !IsDigit(parv
[server
][0]))
168 sendto_one_numeric(source_p
, ERR_NOSUCHSERVER
,
169 form_str(ERR_NOSUCHSERVER
),
171 return (HUNTED_NOSUCH
);
177 RB_DLINK_FOREACH(ptr
, global_client_list
.head
)
179 if(match(new, ((struct Client
*) (ptr
->data
))->name
))
181 target_p
= ptr
->data
;
190 if(!IsRegistered(target_p
))
192 sendto_one_numeric(source_p
, ERR_NOSUCHSERVER
,
193 form_str(ERR_NOSUCHSERVER
),
195 return HUNTED_NOSUCH
;
198 if(IsMe(target_p
) || MyClient(target_p
))
202 parv
[server
] = get_id(target_p
, target_p
);
204 sendto_one(target_p
, command
, get_id(source_p
, target_p
),
205 parv
[1], parv
[2], parv
[3], parv
[4], parv
[5], parv
[6], parv
[7], parv
[8]);
207 return (HUNTED_PASS
);
210 if(MyClient(source_p
) || !IsDigit(parv
[server
][0]))
211 sendto_one_numeric(source_p
, ERR_NOSUCHSERVER
,
212 form_str(ERR_NOSUCHSERVER
), parv
[server
]);
213 return (HUNTED_NOSUCH
);
217 * try_connections - scan through configuration and try new connections.
218 * Returns the calendar time when the next call to this
219 * function should be made latest. (No harm done if this
220 * is called earlier or later...)
223 try_connections(void *unused
)
225 struct Client
*client_p
;
226 struct server_conf
*server_p
= NULL
;
227 struct server_conf
*tmp_p
;
230 int connecting
= FALSE
;
234 RB_DLINK_FOREACH(ptr
, server_conf_list
.head
)
238 if(ServerConfIllegal(tmp_p
) || !ServerConfAutoconn(tmp_p
))
241 /* don't allow ssl connections if ssl isn't setup */
242 if(ServerConfSSL(tmp_p
) && (!ssl_ok
|| !get_ssld_count()))
245 cltmp
= tmp_p
->class;
248 * Skip this entry if the use of it is still on hold until
249 * future. Otherwise handle this entry (and set it on hold
250 * until next time). Will reset only hold times, if already
251 * made one successfull connection... [this algorithm is
252 * a bit fuzzy... -- msa >;) ]
254 if(tmp_p
->hold
> rb_current_time())
256 if(next
> tmp_p
->hold
|| next
== 0)
261 confrq
= get_con_freq(cltmp
);
262 tmp_p
->hold
= rb_current_time() + confrq
;
265 * Found a CONNECT config with port specified, scan clients
266 * and see if this server is already connected?
268 client_p
= find_server(NULL
, tmp_p
->name
);
270 if(!client_p
&& (CurrUsers(cltmp
) < MaxUsers(cltmp
)) && !connecting
)
274 /* We connect only one at time... */
278 if((next
> tmp_p
->hold
) || (next
== 0))
282 /* TODO: change this to set active flag to 0 when added to event! --Habeeb */
283 if(GlobalSetOptions
.autoconn
== 0)
289 /* move this connect entry to end.. */
290 rb_dlinkDelete(&server_p
->node
, &server_conf_list
);
291 rb_dlinkAddTail(server_p
, &server_p
->node
, &server_conf_list
);
294 * We used to only print this if serv_connect() actually
295 * suceeded, but since rb_tcp_connect() can call the callback
296 * immediately if there is an error, we were getting error messages
297 * in the wrong order. SO, we just print out the activated line,
298 * and let serv_connect() / serv_connect_callback() print an
299 * error afterwards if it fails.
302 #ifndef HIDE_SERVERS_IPS
303 sendto_realops_snomask(SNO_GENERAL
, L_ALL
,
304 "Connection to %s[%s] activated.",
305 server_p
->name
, server_p
->host
);
307 sendto_realops_snomask(SNO_GENERAL
, L_ALL
,
308 "Connection to %s activated",
312 serv_connect(server_p
, 0);
316 check_server(const char *name
, struct Client
*client_p
)
318 struct server_conf
*server_p
= NULL
;
319 struct server_conf
*tmp_p
;
323 s_assert(NULL
!= client_p
);
327 if(!(client_p
->localClient
->passwd
))
330 if(strlen(name
) > HOSTLEN
)
333 RB_DLINK_FOREACH(ptr
, server_conf_list
.head
)
337 if(ServerConfIllegal(tmp_p
))
340 if(!match(tmp_p
->name
, name
))
345 /* XXX: Fix me for IPv6 */
346 /* XXX sockhost is the IPv4 ip as a string */
347 if(match(tmp_p
->host
, client_p
->host
) ||
348 match(tmp_p
->host
, client_p
->sockhost
))
352 if(ServerConfEncrypted(tmp_p
))
354 if(!strcmp(tmp_p
->passwd
, crypt(client_p
->localClient
->passwd
,
361 else if(!strcmp(tmp_p
->passwd
, client_p
->localClient
->passwd
))
372 if(ServerConfSSL(server_p
) && client_p
->localClient
->ssl_ctl
== NULL
)
377 attach_server_conf(client_p
, server_p
);
379 /* clear ZIP/TB if they support but we dont want them */
381 if(!ServerConfCompressed(server_p
))
383 ClearCap(client_p
, CAP_ZIP
);
385 if(!ServerConfTb(server_p
))
386 ClearCap(client_p
, CAP_TB
);
394 * inputs - Client pointer to send to
395 * - int flag of capabilities that this server has
397 * side effects - send the CAPAB line to a server -orabidoo
401 send_capabilities(struct Client
*client_p
, int cap_can_send
)
403 struct Capability
*cap
;
404 char msgbuf
[BUFSIZE
];
410 for (cap
= captab
; cap
->name
; ++cap
)
412 if(cap
->cap
& cap_can_send
)
414 tl
= rb_sprintf(t
, "%s ", cap
->name
);
422 sendto_one(client_p
, "CAPAB :%s", msgbuf
);
427 * input - client to burst to, channel name, list to burst, mode flag
429 * side effects - client is sent a list of +b, or +e, or +I modes
432 burst_modes_TS5(struct Client
*client_p
, char *chname
, rb_dlink_list
*list
, char flag
)
436 char mbuf
[MODEBUFLEN
];
445 mlen
= rb_sprintf(buf
, ":%s MODE %s +", me
.name
, chname
);
451 RB_DLINK_FOREACH(ptr
, list
->head
)
454 tlen
= strlen(banptr
->banstr
) + 3;
457 if(tlen
> MODEBUFLEN
)
460 if((count
>= MAXMODEPARAMS
) || ((cur_len
+ tlen
+ 2) > (BUFSIZE
- 3)))
462 sendto_one(client_p
, "%s%s %s", buf
, mbuf
, pbuf
);
472 pp
+= rb_sprintf(pp
, "%s ", banptr
->banstr
);
478 sendto_one(client_p
, "%s%s %s", buf
, mbuf
, pbuf
);
483 * input - client to burst to, channel name, list to burst, mode flag
485 * side effects - client is sent a list of +b, +e, or +I modes
488 burst_modes_TS6(struct Client
*client_p
, struct Channel
*chptr
,
489 rb_dlink_list
*list
, char flag
)
498 cur_len
= mlen
= rb_sprintf(buf
, ":%s BMASK %ld %s %c :",
499 me
.id
, (long) chptr
->channelts
, chptr
->chname
, flag
);
502 RB_DLINK_FOREACH(ptr
, list
->head
)
506 tlen
= strlen(banptr
->banstr
) + 1;
509 if(cur_len
+ tlen
> BUFSIZE
- 3)
511 /* the one we're trying to send doesnt fit at all! */
518 /* chop off trailing space and send.. */
520 sendto_one(client_p
, "%s", buf
);
525 rb_sprintf(t
, "%s ", banptr
->banstr
);
530 /* cant ever exit the loop above without having modified buf,
531 * chop off trailing space and send.
534 sendto_one(client_p
, "%s", buf
);
540 * inputs - client (server) to send nick towards
541 * - client to send nick for
543 * side effects - NICK message is sent towards given client_p
546 burst_TS5(struct Client
*client_p
)
548 static char ubuf
[12];
549 struct Client
*target_p
;
550 struct Channel
*chptr
;
551 struct membership
*msptr
;
552 hook_data_client hclientinfo
;
553 hook_data_channel hchaninfo
;
560 hclientinfo
.client
= hchaninfo
.client
= client_p
;
562 RB_DLINK_FOREACH(ptr
, global_client_list
.head
)
564 target_p
= ptr
->data
;
566 if(!IsPerson(target_p
))
569 send_umode(NULL
, target_p
, 0, 0, ubuf
);
576 sendto_one(client_p
, "NICK %s %d %ld %s %s %s %s :%s",
577 target_p
->name
, target_p
->hopcount
+ 1,
578 (long) target_p
->tsinfo
, ubuf
,
579 target_p
->username
, target_p
->host
,
580 target_p
->servptr
->name
, target_p
->info
);
582 if(IsDynSpoof(target_p
))
583 sendto_one(client_p
, ":%s ENCAP * REALHOST %s",
584 target_p
->name
, target_p
->orighost
);
585 if(!EmptyString(target_p
->user
->suser
))
586 sendto_one(client_p
, ":%s ENCAP * LOGIN %s",
587 target_p
->name
, target_p
->user
->suser
);
589 if(ConfigFileEntry
.burst_away
&& !EmptyString(target_p
->user
->away
))
590 sendto_one(client_p
, ":%s AWAY :%s",
591 target_p
->name
, target_p
->user
->away
);
593 hclientinfo
.target
= target_p
;
594 call_hook(h_burst_client
, &hclientinfo
);
597 RB_DLINK_FOREACH(ptr
, global_channel_list
.head
)
601 if(*chptr
->chname
!= '#')
604 cur_len
= mlen
= rb_sprintf(buf
, ":%s SJOIN %ld %s %s :", me
.name
,
605 (long) chptr
->channelts
, chptr
->chname
,
606 channel_modes(chptr
, client_p
));
610 RB_DLINK_FOREACH(uptr
, chptr
->members
.head
)
614 tlen
= strlen(msptr
->client_p
->name
) + 1;
620 if(cur_len
+ tlen
>= BUFSIZE
- 3)
624 sendto_one(client_p
, "%s", buf
);
629 rb_sprintf(t
, "%s%s ", find_channel_status(msptr
, 1),
630 msptr
->client_p
->name
);
636 if (rb_dlink_list_length(&chptr
->members
) > 0)
638 /* remove trailing space */
642 sendto_one(client_p
, "%s", buf
);
644 burst_modes_TS5(client_p
, chptr
->chname
, &chptr
->banlist
, 'b');
646 if(IsCapable(client_p
, CAP_EX
))
647 burst_modes_TS5(client_p
, chptr
->chname
, &chptr
->exceptlist
, 'e');
649 if(IsCapable(client_p
, CAP_IE
))
650 burst_modes_TS5(client_p
, chptr
->chname
, &chptr
->invexlist
, 'I');
652 burst_modes_TS5(client_p
, chptr
->chname
, &chptr
->quietlist
, 'q');
654 if(IsCapable(client_p
, CAP_TB
) && chptr
->topic
!= NULL
)
655 sendto_one(client_p
, ":%s TB %s %ld %s%s:%s",
656 me
.name
, chptr
->chname
, (long) chptr
->topic_time
,
657 ConfigChannel
.burst_topicwho
? chptr
->topic_info
: "",
658 ConfigChannel
.burst_topicwho
? " " : "",
661 hchaninfo
.chptr
= chptr
;
662 call_hook(h_burst_channel
, &hchaninfo
);
665 hclientinfo
.target
= NULL
;
666 call_hook(h_burst_finished
, &hclientinfo
);
672 * inputs - client (server) to send nick towards
673 * - client to send nick for
675 * side effects - NICK message is sent towards given client_p
678 burst_TS6(struct Client
*client_p
)
680 static char ubuf
[12];
681 struct Client
*target_p
;
682 struct Channel
*chptr
;
683 struct membership
*msptr
;
684 hook_data_client hclientinfo
;
685 hook_data_channel hchaninfo
;
692 hclientinfo
.client
= hchaninfo
.client
= client_p
;
694 RB_DLINK_FOREACH(ptr
, global_client_list
.head
)
696 target_p
= ptr
->data
;
698 if(!IsPerson(target_p
))
701 send_umode(NULL
, target_p
, 0, 0, ubuf
);
708 if(has_id(target_p
) && IsCapable(client_p
, CAP_EUID
))
709 sendto_one(client_p
, ":%s EUID %s %d %ld %s %s %s %s %s %s %s :%s",
710 target_p
->servptr
->id
, target_p
->name
,
711 target_p
->hopcount
+ 1,
712 (long) target_p
->tsinfo
, ubuf
,
713 target_p
->username
, target_p
->host
,
714 IsIPSpoof(target_p
) ? "0" : target_p
->sockhost
,
716 IsDynSpoof(target_p
) ? target_p
->orighost
: "*",
717 EmptyString(target_p
->user
->suser
) ? "*" : target_p
->user
->suser
,
719 else if(has_id(target_p
))
720 sendto_one(client_p
, ":%s UID %s %d %ld %s %s %s %s %s :%s",
721 target_p
->servptr
->id
, target_p
->name
,
722 target_p
->hopcount
+ 1,
723 (long) target_p
->tsinfo
, ubuf
,
724 target_p
->username
, target_p
->host
,
725 IsIPSpoof(target_p
) ? "0" : target_p
->sockhost
,
726 target_p
->id
, target_p
->info
);
728 sendto_one(client_p
, "NICK %s %d %ld %s %s %s %s :%s",
730 target_p
->hopcount
+ 1,
731 (long) target_p
->tsinfo
,
733 target_p
->username
, target_p
->host
,
734 target_p
->servptr
->name
, target_p
->info
);
736 if(!has_id(target_p
) || !IsCapable(client_p
, CAP_EUID
))
738 if(IsDynSpoof(target_p
))
739 sendto_one(client_p
, ":%s ENCAP * REALHOST %s",
740 use_id(target_p
), target_p
->orighost
);
741 if(!EmptyString(target_p
->user
->suser
))
742 sendto_one(client_p
, ":%s ENCAP * LOGIN %s",
743 use_id(target_p
), target_p
->user
->suser
);
746 if(ConfigFileEntry
.burst_away
&& !EmptyString(target_p
->user
->away
))
747 sendto_one(client_p
, ":%s AWAY :%s",
749 target_p
->user
->away
);
751 hclientinfo
.target
= target_p
;
752 call_hook(h_burst_client
, &hclientinfo
);
755 RB_DLINK_FOREACH(ptr
, global_channel_list
.head
)
759 if(*chptr
->chname
!= '#')
762 cur_len
= mlen
= rb_sprintf(buf
, ":%s SJOIN %ld %s %s :", me
.id
,
763 (long) chptr
->channelts
, chptr
->chname
,
764 channel_modes(chptr
, client_p
));
768 RB_DLINK_FOREACH(uptr
, chptr
->members
.head
)
772 tlen
= strlen(use_id(msptr
->client_p
)) + 1;
778 if(cur_len
+ tlen
>= BUFSIZE
- 3)
781 sendto_one(client_p
, "%s", buf
);
786 rb_sprintf(t
, "%s%s ", find_channel_status(msptr
, 1),
787 use_id(msptr
->client_p
));
793 if (rb_dlink_list_length(&chptr
->members
) > 0)
795 /* remove trailing space */
798 sendto_one(client_p
, "%s", buf
);
800 if(rb_dlink_list_length(&chptr
->banlist
) > 0)
801 burst_modes_TS6(client_p
, chptr
, &chptr
->banlist
, 'b');
803 if(IsCapable(client_p
, CAP_EX
) &&
804 rb_dlink_list_length(&chptr
->exceptlist
) > 0)
805 burst_modes_TS6(client_p
, chptr
, &chptr
->exceptlist
, 'e');
807 if(IsCapable(client_p
, CAP_IE
) &&
808 rb_dlink_list_length(&chptr
->invexlist
) > 0)
809 burst_modes_TS6(client_p
, chptr
, &chptr
->invexlist
, 'I');
811 if(rb_dlink_list_length(&chptr
->quietlist
) > 0)
812 burst_modes_TS6(client_p
, chptr
, &chptr
->quietlist
, 'q');
814 if(IsCapable(client_p
, CAP_TB
) && chptr
->topic
!= NULL
)
815 sendto_one(client_p
, ":%s TB %s %ld %s%s:%s",
816 me
.id
, chptr
->chname
, (long) chptr
->topic_time
,
817 ConfigChannel
.burst_topicwho
? chptr
->topic_info
: "",
818 ConfigChannel
.burst_topicwho
? " " : "",
821 hchaninfo
.chptr
= chptr
;
822 call_hook(h_burst_channel
, &hchaninfo
);
825 hclientinfo
.target
= NULL
;
826 call_hook(h_burst_finished
, &hclientinfo
);
830 * show_capabilities - show current server capabilities
832 * inputs - pointer to an struct Client
833 * output - pointer to static string
834 * side effects - build up string representing capabilities of server listed
837 show_capabilities(struct Client
*target_p
)
839 static char msgbuf
[BUFSIZE
];
840 struct Capability
*cap
;
843 rb_strlcpy(msgbuf
, " TS6", sizeof(msgbuf
));
845 rb_strlcpy(msgbuf
, " TS", sizeof(msgbuf
));
848 rb_strlcat(msgbuf
, " SSL", sizeof(msgbuf
));
850 if(!IsServer(target_p
) || !target_p
->serv
->caps
) /* short circuit if no caps */
853 for (cap
= captab
; cap
->cap
; ++cap
)
855 if(cap
->cap
& target_p
->serv
->caps
)
856 rb_snprintf_append(msgbuf
, sizeof(msgbuf
), " %s", cap
->name
);
865 * inputs - pointer to a struct Client
870 server_estab(struct Client
*client_p
)
872 struct Client
*target_p
;
873 struct server_conf
*server_p
;
874 hook_data_client hdata
;
877 char note
[HOSTLEN
+ 15];
879 s_assert(NULL
!= client_p
);
883 host
= client_p
->name
;
885 if((server_p
= client_p
->localClient
->att_sconf
) == NULL
)
887 /* This shouldn't happen, better tell the ops... -A1kmm */
888 sendto_realops_snomask(SNO_GENERAL
, is_remote_connect(client_p
) ? L_NETWIDE
: L_ALL
,
889 "Warning: Lost connect{} block for server %s!", host
);
890 return exit_client(client_p
, client_p
, client_p
, "Lost connect{} block!");
893 /* We shouldn't have to check this, it should already done before
894 * server_estab is called. -A1kmm
896 if(client_p
->localClient
->passwd
)
898 memset(client_p
->localClient
->passwd
, 0, strlen(client_p
->localClient
->passwd
));
899 rb_free(client_p
->localClient
->passwd
);
900 client_p
->localClient
->passwd
= NULL
;
903 /* Its got identd , since its a server */
906 /* If there is something in the serv_list, it might be this
907 * connecting server..
909 if(!ServerInfo
.hub
&& serv_list
.head
)
911 if(client_p
!= serv_list
.head
->data
|| serv_list
.head
->next
)
913 ServerStats
.is_ref
++;
914 sendto_one(client_p
, "ERROR :I'm a leaf not a hub");
915 return exit_client(client_p
, client_p
, client_p
, "I'm a leaf");
919 if(IsUnknown(client_p
))
922 * jdc -- 1. Use EmptyString(), not [0] index reference.
923 * 2. Check ->spasswd, not ->passwd.
925 if(!EmptyString(server_p
->spasswd
))
927 sendto_one(client_p
, "PASS %s TS %d :%s",
928 server_p
->spasswd
, TS_CURRENT
, me
.id
);
931 /* pass info to new server */
932 send_capabilities(client_p
, default_server_capabs
933 | (ServerConfCompressed(server_p
) ? CAP_ZIP_SUPPORTED
: 0)
934 | (ServerConfTb(server_p
) ? CAP_TB
: 0));
936 sendto_one(client_p
, "SERVER %s 1 :%s%s",
938 ConfigServerHide
.hidden
? "(H) " : "",
939 (me
.info
[0]) ? (me
.info
) : "IRCers United");
942 if(!rb_set_buffers(client_p
->localClient
->F
, READBUF_SIZE
))
943 ilog_error("rb_set_buffers failed for server");
945 /* Enable compression now */
946 if(IsCapable(client_p
, CAP_ZIP
))
948 start_zlib_session(client_p
);
950 sendto_one(client_p
, "SVINFO %d %d 0 :%ld", TS_CURRENT
, TS_MIN
, rb_current_time());
952 client_p
->servptr
= &me
;
954 if(IsAnyDead(client_p
))
955 return CLIENT_EXITED
;
959 /* Update the capability combination usage counts */
960 set_chcap_usage_counts(client_p
);
962 rb_dlinkAdd(client_p
, &client_p
->lnode
, &me
.serv
->servers
);
963 del_unknown_ip(client_p
);
964 rb_dlinkMoveNode(&client_p
->localClient
->tnode
, &unknown_list
, &serv_list
);
965 rb_dlinkAddTailAlloc(client_p
, &global_serv_list
);
968 add_to_id_hash(client_p
->id
, client_p
);
970 add_to_client_hash(client_p
->name
, client_p
);
971 /* doesnt duplicate client_p->serv if allocated this struct already */
972 make_server(client_p
);
974 client_p
->serv
->caps
= client_p
->localClient
->caps
;
976 if(client_p
->localClient
->fullcaps
)
978 client_p
->serv
->fullcaps
= rb_strdup(client_p
->localClient
->fullcaps
);
979 rb_free(client_p
->localClient
->fullcaps
);
980 client_p
->localClient
->fullcaps
= NULL
;
983 client_p
->serv
->nameinfo
= scache_connect(client_p
->name
, client_p
->info
, IsHidden(client_p
));
984 client_p
->localClient
->firsttime
= rb_current_time();
985 /* fixing eob timings.. -gnp */
987 if((rb_dlink_list_length(&lclient_list
) + rb_dlink_list_length(&serv_list
)) >
988 (unsigned long)MaxConnectionCount
)
989 MaxConnectionCount
= rb_dlink_list_length(&lclient_list
) +
990 rb_dlink_list_length(&serv_list
);
992 /* Show the real host/IP to admins */
993 sendto_realops_snomask(SNO_GENERAL
, L_ALL
,
994 "Link with %s established: (%s) link",
995 get_server_name(client_p
, SHOW_IP
),
996 show_capabilities(client_p
));
998 ilog(L_SERVER
, "Link with %s established: (%s) link",
999 log_client_name(client_p
, SHOW_IP
), show_capabilities(client_p
));
1002 hdata
.target
= client_p
;
1003 call_hook(h_server_introduced
, &hdata
);
1005 rb_snprintf(note
, sizeof(note
), "Server: %s", client_p
->name
);
1006 rb_note(client_p
->localClient
->F
, note
);
1009 ** Old sendto_serv_but_one() call removed because we now
1010 ** need to send different names to different servers
1011 ** (domain name matching) Send new server to other servers.
1013 RB_DLINK_FOREACH(ptr
, serv_list
.head
)
1015 target_p
= ptr
->data
;
1017 if(target_p
== client_p
)
1020 if(has_id(target_p
) && has_id(client_p
))
1022 sendto_one(target_p
, ":%s SID %s 2 %s :%s%s",
1023 me
.id
, client_p
->name
, client_p
->id
,
1024 IsHidden(client_p
) ? "(H) " : "", client_p
->info
);
1026 if(IsCapable(target_p
, CAP_ENCAP
) &&
1027 !EmptyString(client_p
->serv
->fullcaps
))
1028 sendto_one(target_p
, ":%s ENCAP * GCAP :%s",
1029 client_p
->id
, client_p
->serv
->fullcaps
);
1033 sendto_one(target_p
, ":%s SERVER %s 2 :%s%s",
1034 me
.name
, client_p
->name
,
1035 IsHidden(client_p
) ? "(H) " : "", client_p
->info
);
1037 if(IsCapable(target_p
, CAP_ENCAP
) &&
1038 !EmptyString(client_p
->serv
->fullcaps
))
1039 sendto_one(target_p
, ":%s ENCAP * GCAP :%s",
1040 client_p
->name
, client_p
->serv
->fullcaps
);
1045 ** Pass on my client information to the new server
1047 ** First, pass only servers (idea is that if the link gets
1048 ** cancelled beacause the server was already there,
1049 ** there are no NICK's to be cancelled...). Of course,
1050 ** if cancellation occurs, all this info is sent anyway,
1051 ** and I guess the link dies when a read is attempted...? --msa
1053 ** Note: Link cancellation to occur at this point means
1054 ** that at least two servers from my fragment are building
1055 ** up connection this other fragment at the same time, it's
1056 ** a race condition, not the normal way of operation...
1058 ** ALSO NOTE: using the get_client_name for server names--
1059 ** see previous *WARNING*!!! (Also, original inpath
1062 RB_DLINK_FOREACH(ptr
, global_serv_list
.head
)
1064 target_p
= ptr
->data
;
1066 /* target_p->from == target_p for target_p == client_p */
1067 if(IsMe(target_p
) || target_p
->from
== client_p
)
1070 /* presumption, if target has an id, so does its uplink */
1071 if(has_id(client_p
) && has_id(target_p
))
1072 sendto_one(client_p
, ":%s SID %s %d %s :%s%s",
1073 target_p
->servptr
->id
, target_p
->name
,
1074 target_p
->hopcount
+ 1, target_p
->id
,
1075 IsHidden(target_p
) ? "(H) " : "", target_p
->info
);
1077 sendto_one(client_p
, ":%s SERVER %s %d :%s%s",
1078 target_p
->servptr
->name
,
1079 target_p
->name
, target_p
->hopcount
+ 1,
1080 IsHidden(target_p
) ? "(H) " : "", target_p
->info
);
1082 if(IsCapable(client_p
, CAP_ENCAP
) &&
1083 !EmptyString(target_p
->serv
->fullcaps
))
1084 sendto_one(client_p
, ":%s ENCAP * GCAP :%s",
1085 get_id(target_p
, client_p
),
1086 target_p
->serv
->fullcaps
);
1089 if(has_id(client_p
))
1090 burst_TS6(client_p
);
1092 burst_TS5(client_p
);
1094 /* Always send a PING after connect burst is done */
1095 sendto_one(client_p
, "PING :%s", get_id(&me
, client_p
));
1097 free_pre_client(client_p
);
1099 if (!IsCapable(client_p
, CAP_ZIP
))
1100 send_pop_queue(client_p
);
1106 * New server connection code
1107 * Based upon the stuff floating about in s_bsd.c
1112 serv_connect_resolved(struct Client
*client_p
)
1114 struct rb_sockaddr_storage myipnum
;
1115 char vhoststr
[HOSTIPLEN
];
1116 struct server_conf
*server_p
;
1119 if((server_p
= client_p
->localClient
->att_sconf
) == NULL
)
1121 sendto_realops_snomask(SNO_GENERAL
, is_remote_connect(client_p
) ? L_NETWIDE
: L_ALL
, "Lost connect{} block for %s",
1122 get_server_name(client_p
, HIDE_IP
));
1123 exit_client(client_p
, client_p
, &me
, "Lost connect{} block");
1128 if(client_p
->localClient
->ip
.ss_family
== AF_INET6
)
1129 port
= ntohs(((struct sockaddr_in6
*)&client_p
->localClient
->ip
)->sin6_port
);
1132 port
= ntohs(((struct sockaddr_in
*)&client_p
->localClient
->ip
)->sin_port
);
1134 if(ServerConfVhosted(server_p
))
1136 memcpy(&myipnum
, &server_p
->my_ipnum
, sizeof(myipnum
));
1137 ((struct sockaddr_in
*)&myipnum
)->sin_port
= 0;
1138 myipnum
.ss_family
= server_p
->aftype
;
1141 else if(server_p
->aftype
== AF_INET
&& ServerInfo
.specific_ipv4_vhost
)
1143 memcpy(&myipnum
, &ServerInfo
.ip
, sizeof(myipnum
));
1144 ((struct sockaddr_in
*)&myipnum
)->sin_port
= 0;
1145 myipnum
.ss_family
= AF_INET
;
1146 SET_SS_LEN(&myipnum
, sizeof(struct sockaddr_in
));
1150 else if((server_p
->aftype
== AF_INET6
) && ServerInfo
.specific_ipv6_vhost
)
1152 memcpy(&myipnum
, &ServerInfo
.ip6
, sizeof(myipnum
));
1153 ((struct sockaddr_in6
*)&myipnum
)->sin6_port
= 0;
1154 myipnum
.ss_family
= AF_INET6
;
1155 SET_SS_LEN(&myipnum
, sizeof(struct sockaddr_in6
));
1161 ilog(L_SERVER
, "Connecting to %s[%s] port %d (%s)", client_p
->name
, client_p
->sockhost
, port
,
1163 server_p
->aftype
== AF_INET6
? "IPv6" :
1165 (server_p
->aftype
== AF_INET
? "IPv4" : "?"));
1167 if(ServerConfSSL(server_p
))
1169 rb_connect_tcp(client_p
->localClient
->F
, (struct sockaddr
*)&client_p
->localClient
->ip
,
1170 NULL
, 0, serv_connect_ssl_callback
,
1171 client_p
, ConfigFileEntry
.connect_timeout
);
1174 rb_connect_tcp(client_p
->localClient
->F
, (struct sockaddr
*)&client_p
->localClient
->ip
,
1175 NULL
, 0, serv_connect_callback
,
1176 client_p
, ConfigFileEntry
.connect_timeout
);
1181 inetntop_sock((struct sockaddr
*)&myipnum
, vhoststr
, sizeof vhoststr
);
1182 ilog(L_SERVER
, "Connecting to %s[%s] port %d (%s) (vhost %s)", client_p
->name
, client_p
->sockhost
, port
,
1184 server_p
->aftype
== AF_INET6
? "IPv6" :
1186 (server_p
->aftype
== AF_INET
? "IPv4" : "?"), vhoststr
);
1189 if(ServerConfSSL(server_p
))
1190 rb_connect_tcp(client_p
->localClient
->F
, (struct sockaddr
*)&client_p
->localClient
->ip
,
1191 (struct sockaddr
*) &myipnum
,
1192 GET_SS_LEN(&myipnum
), serv_connect_ssl_callback
, client_p
,
1193 ConfigFileEntry
.connect_timeout
);
1195 rb_connect_tcp(client_p
->localClient
->F
, (struct sockaddr
*)&client_p
->localClient
->ip
,
1196 (struct sockaddr
*) &myipnum
,
1197 GET_SS_LEN(&myipnum
), serv_connect_callback
, client_p
,
1198 ConfigFileEntry
.connect_timeout
);
1204 serv_connect_dns_callback(void *vptr
, struct DNSReply
*reply
)
1206 struct Client
*client_p
= vptr
;
1209 rb_free(client_p
->localClient
->dnsquery
);
1210 client_p
->localClient
->dnsquery
= NULL
;
1214 sendto_realops_snomask(SNO_GENERAL
, is_remote_connect(client_p
) ? L_NETWIDE
: L_ALL
, "Cannot resolve hostname for %s",
1215 get_server_name(client_p
, HIDE_IP
));
1216 ilog(L_SERVER
, "Cannot resolve hostname for %s",
1217 log_client_name(client_p
, HIDE_IP
));
1218 exit_client(client_p
, client_p
, &me
, "Cannot resolve hostname");
1222 if(reply
->addr
.ss_family
== AF_INET6
)
1223 port
= ((struct sockaddr_in6
*)&client_p
->localClient
->ip
)->sin6_port
;
1226 port
= ((struct sockaddr_in
*)&client_p
->localClient
->ip
)->sin_port
;
1227 memcpy(&client_p
->localClient
->ip
, &reply
->addr
, sizeof(client_p
->localClient
->ip
));
1229 if(reply
->addr
.ss_family
== AF_INET6
)
1230 ((struct sockaddr_in6
*)&client_p
->localClient
->ip
)->sin6_port
= port
;
1233 ((struct sockaddr_in
*)&client_p
->localClient
->ip
)->sin_port
= port
;
1234 /* Set sockhost properly now -- jilles */
1235 inetntop_sock((struct sockaddr
*)&client_p
->localClient
->ip
,
1236 client_p
->sockhost
, sizeof client_p
->sockhost
);
1237 serv_connect_resolved(client_p
);
1241 * serv_connect() - initiate a server connection
1243 * inputs - pointer to conf
1244 * - pointer to client doing the connet
1248 * This code initiates a connection to a server. It first checks to make
1249 * sure the given server exists. If this is the case, it creates a socket,
1250 * creates a client, saves the socket information in the client, and
1251 * initiates a connection to the server through rb_connect_tcp(). The
1252 * completion of this goes through serv_completed_connection().
1254 * We return 1 if the connection is attempted, since we don't know whether
1255 * it suceeded or not, and 0 if it fails in here somewhere.
1258 serv_connect(struct server_conf
*server_p
, struct Client
*by
)
1260 struct Client
*client_p
;
1261 struct rb_sockaddr_storage theiripnum
;
1263 char note
[HOSTLEN
+ 10];
1265 s_assert(server_p
!= NULL
);
1266 if(server_p
== NULL
)
1270 * Make sure this server isn't already connected
1272 if((client_p
= find_server(NULL
, server_p
->name
)))
1274 sendto_realops_snomask(SNO_GENERAL
, L_ALL
,
1275 "Server %s already present from %s",
1276 server_p
->name
, get_server_name(client_p
, SHOW_IP
));
1277 if(by
&& IsPerson(by
) && !MyClient(by
))
1278 sendto_one_notice(by
, ":Server %s already present from %s",
1279 server_p
->name
, get_server_name(client_p
, SHOW_IP
));
1283 /* create a socket for the server connection */
1284 if((F
= rb_socket(server_p
->aftype
, SOCK_STREAM
, 0, NULL
)) == NULL
)
1286 ilog_error("opening a stream socket");
1290 rb_snprintf(note
, sizeof note
, "Server: %s", server_p
->name
);
1293 /* Create a local client */
1294 client_p
= make_client(NULL
);
1296 /* Copy in the server, hostname, fd
1297 * The sockhost may be a hostname, this will be corrected later
1300 strlcpy(client_p
->name
, server_p
->name
, sizeof(client_p
->name
));
1301 strlcpy(client_p
->host
, server_p
->host
, sizeof(client_p
->host
));
1302 strlcpy(client_p
->sockhost
, server_p
->host
, sizeof(client_p
->sockhost
));
1303 client_p
->localClient
->F
= F
;
1304 add_to_cli_fd_hash(client_p
);
1307 * Set up the initial server evilness, ripped straight from
1308 * connect_server(), so don't blame me for it being evil.
1312 if(!rb_set_buffers(client_p
->localClient
->F
, READBUF_SIZE
))
1314 ilog_error("setting the buffer size for a server connection");
1318 * Attach config entries to client here rather than in
1319 * serv_connect_callback(). This to avoid null pointer references.
1321 attach_server_conf(client_p
, server_p
);
1324 * at this point we have a connection in progress and C/N lines
1325 * attached to the client, the socket info should be saved in the
1326 * client and it should either be resolved or have a valid address.
1328 * The socket has been connected or connect is in progress.
1330 make_server(client_p
);
1331 if(by
&& IsPerson(by
))
1333 strcpy(client_p
->serv
->by
, by
->name
);
1334 if(client_p
->serv
->user
)
1335 free_user(client_p
->serv
->user
, NULL
);
1336 client_p
->serv
->user
= by
->user
;
1341 strcpy(client_p
->serv
->by
, "AutoConn.");
1342 if(client_p
->serv
->user
)
1343 free_user(client_p
->serv
->user
, NULL
);
1344 client_p
->serv
->user
= NULL
;
1346 SetConnecting(client_p
);
1347 rb_dlinkAddTail(client_p
, &client_p
->node
, &global_client_list
);
1349 if (rb_inet_pton_sock(server_p
->host
, (struct sockaddr
*)&theiripnum
) > 0)
1351 memcpy(&client_p
->localClient
->ip
, &theiripnum
, sizeof(client_p
->localClient
->ip
));
1353 if(theiripnum
.ss_family
== AF_INET6
)
1354 ((struct sockaddr_in6
*)&client_p
->localClient
->ip
)->sin6_port
= htons(server_p
->port
);
1357 ((struct sockaddr_in
*)&client_p
->localClient
->ip
)->sin_port
= htons(server_p
->port
);
1359 return serv_connect_resolved(client_p
);
1364 if(theiripnum
.ss_family
== AF_INET6
)
1365 ((struct sockaddr_in6
*)&client_p
->localClient
->ip
)->sin6_port
= htons(server_p
->port
);
1368 ((struct sockaddr_in
*)&client_p
->localClient
->ip
)->sin_port
= htons(server_p
->port
);
1370 client_p
->localClient
->dnsquery
= rb_malloc(sizeof(struct DNSQuery
));
1371 client_p
->localClient
->dnsquery
->ptr
= client_p
;
1372 client_p
->localClient
->dnsquery
->callback
= serv_connect_dns_callback
;
1373 gethost_byname_type(server_p
->host
, client_p
->localClient
->dnsquery
,
1375 server_p
->aftype
== AF_INET6
? T_AAAA
:
1383 serv_connect_ev(void *data
)
1385 struct Client
*client_p
= data
;
1386 serv_connect_callback(client_p
->localClient
->F
, RB_OK
, client_p
);
1390 serv_connect_ssl_callback(rb_fde_t
*F
, int status
, void *data
)
1392 struct Client
*client_p
= data
;
1396 /* XXX deal with failure */
1399 rb_connect_sockaddr(F
, (struct sockaddr
*)&client_p
->localClient
->ip
, sizeof(client_p
->localClient
->ip
));
1400 rb_socketpair(AF_UNIX
, SOCK_STREAM
, 0, &xF
[0], &xF
[1], "Outgoing ssld connection");
1401 del_from_cli_fd_hash(client_p
);
1402 client_p
->localClient
->F
= xF
[0];
1403 add_to_cli_fd_hash(client_p
);
1405 client_p
->localClient
->ssl_ctl
= start_ssld_connect(F
, xF
[1], rb_get_fd(xF
[0]));
1407 rb_event_addonce("serv_connect_ev", serv_connect_ev
, client_p
, 1);
1411 * serv_connect_callback() - complete a server connection.
1413 * This routine is called after the server connection attempt has
1414 * completed. If unsucessful, an error is sent to ops and the client
1415 * is closed. If sucessful, it goes through the initialisation/check
1416 * procedures, the capabilities are sent, and the socket is then
1417 * marked for reading.
1420 serv_connect_callback(rb_fde_t
*F
, int status
, void *data
)
1422 struct Client
*client_p
= data
;
1423 struct server_conf
*server_p
;
1426 /* First, make sure its a real client! */
1427 s_assert(client_p
!= NULL
);
1428 s_assert(client_p
->localClient
->F
== F
);
1430 if(client_p
== NULL
)
1433 /* while we were waiting for the callback, its possible this already
1436 if(find_server(NULL
, client_p
->name
) != NULL
)
1438 exit_client(client_p
, client_p
, &me
, "Server Exists");
1442 if(client_p
->localClient
->ssl_ctl
== NULL
)
1443 rb_connect_sockaddr(F
, (struct sockaddr
*)&client_p
->localClient
->ip
, sizeof(client_p
->localClient
->ip
));
1445 /* Check the status */
1448 /* COMM_ERR_TIMEOUT wont have an errno associated with it,
1449 * the others will.. --fl
1451 if(status
== RB_ERR_TIMEOUT
)
1453 sendto_realops_snomask(SNO_GENERAL
, is_remote_connect(client_p
) ? L_NETWIDE
: L_ALL
,
1454 "Error connecting to %s[%s]: %s",
1456 #ifdef HIDE_SERVERS_IPS
1462 ilog(L_SERVER
, "Error connecting to %s[%s]: %s",
1463 client_p
->name
, client_p
->sockhost
,
1468 errstr
= strerror(rb_get_sockerr(F
));
1469 sendto_realops_snomask(SNO_GENERAL
, is_remote_connect(client_p
) ? L_NETWIDE
: L_ALL
,
1470 "Error connecting to %s[%s]: %s (%s)",
1472 #ifdef HIDE_SERVERS_IPS
1477 rb_errstr(status
), errstr
);
1478 ilog(L_SERVER
, "Error connecting to %s[%s]: %s (%s)",
1479 client_p
->name
, client_p
->sockhost
,
1480 rb_errstr(status
), errstr
);
1483 exit_client(client_p
, client_p
, &me
, rb_errstr(status
));
1487 /* COMM_OK, so continue the connection procedure */
1488 /* Get the C/N lines */
1489 if((server_p
= client_p
->localClient
->att_sconf
) == NULL
)
1491 sendto_realops_snomask(SNO_GENERAL
, is_remote_connect(client_p
) ? L_NETWIDE
: L_ALL
, "Lost connect{} block for %s",
1492 get_server_name(client_p
, HIDE_IP
));
1493 exit_client(client_p
, client_p
, &me
, "Lost connect{} block");
1497 /* Next, send the initial handshake */
1498 SetHandshake(client_p
);
1500 /* kludge, if we're not using TS6, dont ever send
1501 * ourselves as being TS6 capable.
1503 if(!EmptyString(server_p
->spasswd
))
1505 sendto_one(client_p
, "PASS %s TS %d :%s",
1506 server_p
->spasswd
, TS_CURRENT
, me
.id
);
1509 /* pass my info to the new server */
1510 send_capabilities(client_p
, default_server_capabs
1511 | (ServerConfCompressed(server_p
) ? CAP_ZIP_SUPPORTED
: 0)
1512 | (ServerConfTb(server_p
) ? CAP_TB
: 0));
1514 sendto_one(client_p
, "SERVER %s 1 :%s%s",
1516 ConfigServerHide
.hidden
? "(H) " : "", me
.info
);
1519 * If we've been marked dead because a send failed, just exit
1520 * here now and save everyone the trouble of us ever existing.
1522 if(IsAnyDead(client_p
))
1524 sendto_realops_snomask(SNO_GENERAL
, is_remote_connect(client_p
) ? L_NETWIDE
: L_ALL
,
1525 "%s went dead during handshake", client_p
->name
);
1526 exit_client(client_p
, client_p
, &me
, "Went dead during handshake");
1530 /* don't move to serv_list yet -- we haven't sent a burst! */
1532 /* If we get here, we're ok, so lets start reading some data */
1533 read_packet(F
, client_p
);
1536 #ifndef HAVE_SOCKETPAIR
1538 inet_socketpair(int d
, int type
, int protocol
, int sv
[2])
1540 struct sockaddr_in addr1
, addr2
, addr3
;
1541 int addr3_len
= sizeof(addr3
);
1543 int port_no
= 20000;
1545 if(d
!= AF_INET
|| type
!= SOCK_STREAM
|| protocol
)
1547 errno
= EAFNOSUPPORT
;
1550 if(((sv
[0] = socket(AF_INET
, SOCK_STREAM
, 0)) < 0) || ((sv
[1] = socket(AF_INET
, SOCK_STREAM
, 0)) < 0))
1553 addr1
.sin_port
= htons(port_no
);
1554 addr1
.sin_family
= AF_INET
;
1555 addr1
.sin_addr
.s_addr
= htonl(INADDR_LOOPBACK
);
1556 while ((rc
= bind (sv
[0], (struct sockaddr
*) &addr1
, sizeof (addr1
))) < 0 && errno
== EADDRINUSE
)
1557 addr1
.sin_port
= htons(++port_no
);
1562 if(listen(sv
[0], 1) < 0)
1569 addr2
.sin_port
= htons(port_no
);
1570 addr2
.sin_family
= AF_INET
;
1571 addr2
.sin_addr
.s_addr
= htonl(INADDR_LOOPBACK
);
1572 if(connect (sv
[1], (struct sockaddr
*) &addr2
, sizeof (addr2
)) < 0)
1579 if((fd
= accept(sv
[1], (struct sockaddr
*) &addr3
, &addr3_len
)) < 0)