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
[] = {
87 { "KNOCK", CAP_KNOCK
},
90 { "UNKLN", CAP_UNKLN
},
91 { "CLUSTER", CAP_CLUSTER
},
92 { "ENCAP", CAP_ENCAP
},
93 { "SERVICES", CAP_SERVICE
},
94 { "RSFNC", CAP_RSFNC
},
100 static CNCB serv_connect_callback
;
101 static CNCB serv_connect_ssl_callback
;
104 * hunt_server - Do the basic thing in delivering the message (command)
105 * across the relays to the specific server (server) for
108 * Note: The command is a format string and *MUST* be
109 * of prefixed style (e.g. ":%s COMMAND %s ...").
110 * Command can have only max 8 parameters.
112 * server parv[server] is the parameter identifying the
116 * parv[server] is replaced with the pointer to the
117 * real servername from the matched client (I'm lazy
120 * returns: (see #defines)
123 hunt_server(struct Client
*client_p
, struct Client
*source_p
,
124 const char *command
, int server
, int parc
, const char *parv
[])
126 struct Client
*target_p
;
133 * Assume it's me, if no server
135 if(parc
<= server
|| EmptyString(parv
[server
]) ||
136 match(parv
[server
], me
.name
) || (strcmp(parv
[server
], me
.id
) == 0))
137 return (HUNTED_ISME
);
139 new = LOCAL_COPY(parv
[server
]);
142 * These are to pickup matches that would cause the following
143 * message to go in the wrong direction while doing quick fast
144 * non-matching lookups.
146 if(MyClient(source_p
))
147 target_p
= find_named_client(new);
149 target_p
= find_client(new);
152 if(target_p
->from
== source_p
->from
&& !MyConnect(target_p
))
156 wilds
= (strchr(new, '?') || strchr(new, '*'));
159 * Again, if there are no wild cards involved in the server
160 * name, use the hash lookup
166 if(MyClient(source_p
) || !IsDigit(parv
[server
][0]))
167 sendto_one_numeric(source_p
, ERR_NOSUCHSERVER
,
168 form_str(ERR_NOSUCHSERVER
),
170 return (HUNTED_NOSUCH
);
176 RB_DLINK_FOREACH(ptr
, global_client_list
.head
)
178 if(match(new, ((struct Client
*) (ptr
->data
))->name
))
180 target_p
= ptr
->data
;
189 if(!IsRegistered(target_p
))
191 sendto_one_numeric(source_p
, ERR_NOSUCHSERVER
,
192 form_str(ERR_NOSUCHSERVER
),
194 return HUNTED_NOSUCH
;
197 if(IsMe(target_p
) || MyClient(target_p
))
201 parv
[server
] = get_id(target_p
, target_p
);
203 sendto_one(target_p
, command
, get_id(source_p
, target_p
),
204 parv
[1], parv
[2], parv
[3], parv
[4], parv
[5], parv
[6], parv
[7], parv
[8]);
206 return (HUNTED_PASS
);
209 if(MyClient(source_p
) || !IsDigit(parv
[server
][0]))
210 sendto_one_numeric(source_p
, ERR_NOSUCHSERVER
,
211 form_str(ERR_NOSUCHSERVER
), parv
[server
]);
212 return (HUNTED_NOSUCH
);
216 * try_connections - scan through configuration and try new connections.
217 * Returns the calendar time when the next call to this
218 * function should be made latest. (No harm done if this
219 * is called earlier or later...)
222 try_connections(void *unused
)
224 struct Client
*client_p
;
225 struct server_conf
*server_p
= NULL
;
226 struct server_conf
*tmp_p
;
229 int connecting
= FALSE
;
233 RB_DLINK_FOREACH(ptr
, server_conf_list
.head
)
237 if(ServerConfIllegal(tmp_p
) || !ServerConfAutoconn(tmp_p
))
240 /* don't allow ssl connections if ssl isn't setup */
241 if(ServerConfSSL(tmp_p
) && (!ssl_ok
|| !get_ssld_count()))
244 cltmp
= tmp_p
->class;
247 * Skip this entry if the use of it is still on hold until
248 * future. Otherwise handle this entry (and set it on hold
249 * until next time). Will reset only hold times, if already
250 * made one successfull connection... [this algorithm is
251 * a bit fuzzy... -- msa >;) ]
253 if(tmp_p
->hold
> rb_current_time())
255 if(next
> tmp_p
->hold
|| next
== 0)
260 confrq
= get_con_freq(cltmp
);
261 tmp_p
->hold
= rb_current_time() + confrq
;
264 * Found a CONNECT config with port specified, scan clients
265 * and see if this server is already connected?
267 client_p
= find_server(NULL
, tmp_p
->name
);
269 if(!client_p
&& (CurrUsers(cltmp
) < MaxUsers(cltmp
)) && !connecting
)
273 /* We connect only one at time... */
277 if((next
> tmp_p
->hold
) || (next
== 0))
281 /* TODO: change this to set active flag to 0 when added to event! --Habeeb */
282 if(GlobalSetOptions
.autoconn
== 0)
288 /* move this connect entry to end.. */
289 rb_dlinkDelete(&server_p
->node
, &server_conf_list
);
290 rb_dlinkAddTail(server_p
, &server_p
->node
, &server_conf_list
);
293 * We used to only print this if serv_connect() actually
294 * suceeded, but since rb_tcp_connect() can call the callback
295 * immediately if there is an error, we were getting error messages
296 * in the wrong order. SO, we just print out the activated line,
297 * and let serv_connect() / serv_connect_callback() print an
298 * error afterwards if it fails.
301 #ifndef HIDE_SERVERS_IPS
302 sendto_realops_snomask(SNO_GENERAL
, L_ALL
,
303 "Connection to %s[%s] activated.",
304 server_p
->name
, server_p
->host
);
306 sendto_realops_snomask(SNO_GENERAL
, L_ALL
,
307 "Connection to %s activated",
311 serv_connect(server_p
, 0);
315 check_server(const char *name
, struct Client
*client_p
)
317 struct server_conf
*server_p
= NULL
;
318 struct server_conf
*tmp_p
;
322 s_assert(NULL
!= client_p
);
326 if(!(client_p
->localClient
->passwd
))
329 if(strlen(name
) > HOSTLEN
)
332 RB_DLINK_FOREACH(ptr
, server_conf_list
.head
)
336 if(ServerConfIllegal(tmp_p
))
339 if(!match(tmp_p
->name
, name
))
344 /* XXX: Fix me for IPv6 */
345 /* XXX sockhost is the IPv4 ip as a string */
346 if(match(tmp_p
->host
, client_p
->host
) ||
347 match(tmp_p
->host
, client_p
->sockhost
))
351 if(ServerConfEncrypted(tmp_p
))
353 if(!strcmp(tmp_p
->passwd
, crypt(client_p
->localClient
->passwd
,
360 else if(!strcmp(tmp_p
->passwd
, client_p
->localClient
->passwd
))
371 if(ServerConfSSL(server_p
) && client_p
->localClient
->ssl_ctl
== NULL
)
376 attach_server_conf(client_p
, server_p
);
378 /* clear ZIP/TB if they support but we dont want them */
380 if(!ServerConfCompressed(server_p
))
382 ClearCap(client_p
, CAP_ZIP
);
384 if(!ServerConfTb(server_p
))
385 ClearCap(client_p
, CAP_TB
);
393 * inputs - Client pointer to send to
394 * - int flag of capabilities that this server has
396 * side effects - send the CAPAB line to a server -orabidoo
400 send_capabilities(struct Client
*client_p
, int cap_can_send
)
402 struct Capability
*cap
;
403 char msgbuf
[BUFSIZE
];
409 for (cap
= captab
; cap
->name
; ++cap
)
411 if(cap
->cap
& cap_can_send
)
413 tl
= rb_sprintf(t
, "%s ", cap
->name
);
421 sendto_one(client_p
, "CAPAB :%s", msgbuf
);
426 * input - client to burst to, channel name, list to burst, mode flag
428 * side effects - client is sent a list of +b, or +e, or +I modes
431 burst_modes_TS5(struct Client
*client_p
, char *chname
, rb_dlink_list
*list
, char flag
)
435 char mbuf
[MODEBUFLEN
];
444 mlen
= rb_sprintf(buf
, ":%s MODE %s +", me
.name
, chname
);
450 RB_DLINK_FOREACH(ptr
, list
->head
)
453 tlen
= strlen(banptr
->banstr
) + 3;
456 if(tlen
> MODEBUFLEN
)
459 if((count
>= MAXMODEPARAMS
) || ((cur_len
+ tlen
+ 2) > (BUFSIZE
- 3)))
461 sendto_one(client_p
, "%s%s %s", buf
, mbuf
, pbuf
);
471 pp
+= rb_sprintf(pp
, "%s ", banptr
->banstr
);
477 sendto_one(client_p
, "%s%s %s", buf
, mbuf
, pbuf
);
482 * input - client to burst to, channel name, list to burst, mode flag
484 * side effects - client is sent a list of +b, +e, or +I modes
487 burst_modes_TS6(struct Client
*client_p
, struct Channel
*chptr
,
488 rb_dlink_list
*list
, char flag
)
497 cur_len
= mlen
= rb_sprintf(buf
, ":%s BMASK %ld %s %c :",
498 me
.id
, (long) chptr
->channelts
, chptr
->chname
, flag
);
501 RB_DLINK_FOREACH(ptr
, list
->head
)
505 tlen
= strlen(banptr
->banstr
) + 1;
508 if(cur_len
+ tlen
> BUFSIZE
- 3)
510 /* the one we're trying to send doesnt fit at all! */
517 /* chop off trailing space and send.. */
519 sendto_one(client_p
, "%s", buf
);
524 rb_sprintf(t
, "%s ", banptr
->banstr
);
529 /* cant ever exit the loop above without having modified buf,
530 * chop off trailing space and send.
533 sendto_one(client_p
, "%s", buf
);
539 * inputs - client (server) to send nick towards
540 * - client to send nick for
542 * side effects - NICK message is sent towards given client_p
545 burst_TS5(struct Client
*client_p
)
547 static char ubuf
[12];
548 struct Client
*target_p
;
549 struct Channel
*chptr
;
550 struct membership
*msptr
;
551 hook_data_client hclientinfo
;
552 hook_data_channel hchaninfo
;
559 hclientinfo
.client
= hchaninfo
.client
= client_p
;
561 RB_DLINK_FOREACH(ptr
, global_client_list
.head
)
563 target_p
= ptr
->data
;
565 if(!IsPerson(target_p
))
568 send_umode(NULL
, target_p
, 0, 0, ubuf
);
575 sendto_one(client_p
, "NICK %s %d %ld %s %s %s %s :%s",
576 target_p
->name
, target_p
->hopcount
+ 1,
577 (long) target_p
->tsinfo
, ubuf
,
578 target_p
->username
, target_p
->host
,
579 target_p
->servptr
->name
, target_p
->info
);
581 if(IsDynSpoof(target_p
))
582 sendto_one(client_p
, ":%s ENCAP * REALHOST %s",
583 target_p
->name
, target_p
->orighost
);
584 if(!EmptyString(target_p
->user
->suser
))
585 sendto_one(client_p
, ":%s ENCAP * LOGIN %s",
586 target_p
->name
, target_p
->user
->suser
);
588 if(ConfigFileEntry
.burst_away
&& !EmptyString(target_p
->user
->away
))
589 sendto_one(client_p
, ":%s AWAY :%s",
590 target_p
->name
, target_p
->user
->away
);
592 hclientinfo
.target
= target_p
;
593 call_hook(h_burst_client
, &hclientinfo
);
596 RB_DLINK_FOREACH(ptr
, global_channel_list
.head
)
600 if(*chptr
->chname
!= '#')
603 cur_len
= mlen
= rb_sprintf(buf
, ":%s SJOIN %ld %s %s :", me
.name
,
604 (long) chptr
->channelts
, chptr
->chname
,
605 channel_modes(chptr
, client_p
));
609 RB_DLINK_FOREACH(uptr
, chptr
->members
.head
)
613 tlen
= strlen(msptr
->client_p
->name
) + 1;
619 if(cur_len
+ tlen
>= BUFSIZE
- 3)
623 sendto_one(client_p
, "%s", buf
);
628 rb_sprintf(t
, "%s%s ", find_channel_status(msptr
, 1),
629 msptr
->client_p
->name
);
635 if (rb_dlink_list_length(&chptr
->members
) > 0)
637 /* remove trailing space */
641 sendto_one(client_p
, "%s", buf
);
643 burst_modes_TS5(client_p
, chptr
->chname
, &chptr
->banlist
, 'b');
645 if(IsCapable(client_p
, CAP_EX
))
646 burst_modes_TS5(client_p
, chptr
->chname
, &chptr
->exceptlist
, 'e');
648 if(IsCapable(client_p
, CAP_IE
))
649 burst_modes_TS5(client_p
, chptr
->chname
, &chptr
->invexlist
, 'I');
651 burst_modes_TS5(client_p
, chptr
->chname
, &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
.name
, 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
);
671 * inputs - client (server) to send nick towards
672 * - client to send nick for
674 * side effects - NICK message is sent towards given client_p
677 burst_TS6(struct Client
*client_p
)
679 static char ubuf
[12];
680 struct Client
*target_p
;
681 struct Channel
*chptr
;
682 struct membership
*msptr
;
683 hook_data_client hclientinfo
;
684 hook_data_channel hchaninfo
;
691 hclientinfo
.client
= hchaninfo
.client
= client_p
;
693 RB_DLINK_FOREACH(ptr
, global_client_list
.head
)
695 target_p
= ptr
->data
;
697 if(!IsPerson(target_p
))
700 send_umode(NULL
, target_p
, 0, 0, ubuf
);
707 if(has_id(target_p
) && IsCapable(client_p
, CAP_EUID
))
708 sendto_one(client_p
, ":%s EUID %s %d %ld %s %s %s %s %s %s %s :%s",
709 target_p
->servptr
->id
, target_p
->name
,
710 target_p
->hopcount
+ 1,
711 (long) target_p
->tsinfo
, ubuf
,
712 target_p
->username
, target_p
->host
,
713 IsIPSpoof(target_p
) ? "0" : target_p
->sockhost
,
715 IsDynSpoof(target_p
) ? target_p
->orighost
: "*",
716 EmptyString(target_p
->user
->suser
) ? "*" : target_p
->user
->suser
,
718 else if(has_id(target_p
))
719 sendto_one(client_p
, ":%s UID %s %d %ld %s %s %s %s %s :%s",
720 target_p
->servptr
->id
, target_p
->name
,
721 target_p
->hopcount
+ 1,
722 (long) target_p
->tsinfo
, ubuf
,
723 target_p
->username
, target_p
->host
,
724 IsIPSpoof(target_p
) ? "0" : target_p
->sockhost
,
725 target_p
->id
, target_p
->info
);
727 sendto_one(client_p
, "NICK %s %d %ld %s %s %s %s :%s",
729 target_p
->hopcount
+ 1,
730 (long) target_p
->tsinfo
,
732 target_p
->username
, target_p
->host
,
733 target_p
->servptr
->name
, target_p
->info
);
735 if(!has_id(target_p
) || !IsCapable(client_p
, CAP_EUID
))
737 if(IsDynSpoof(target_p
))
738 sendto_one(client_p
, ":%s ENCAP * REALHOST %s",
739 use_id(target_p
), target_p
->orighost
);
740 if(!EmptyString(target_p
->user
->suser
))
741 sendto_one(client_p
, ":%s ENCAP * LOGIN %s",
742 use_id(target_p
), target_p
->user
->suser
);
745 if(ConfigFileEntry
.burst_away
&& !EmptyString(target_p
->user
->away
))
746 sendto_one(client_p
, ":%s AWAY :%s",
748 target_p
->user
->away
);
750 hclientinfo
.target
= target_p
;
751 call_hook(h_burst_client
, &hclientinfo
);
754 RB_DLINK_FOREACH(ptr
, global_channel_list
.head
)
758 if(*chptr
->chname
!= '#')
761 cur_len
= mlen
= rb_sprintf(buf
, ":%s SJOIN %ld %s %s :", me
.id
,
762 (long) chptr
->channelts
, chptr
->chname
,
763 channel_modes(chptr
, client_p
));
767 RB_DLINK_FOREACH(uptr
, chptr
->members
.head
)
771 tlen
= strlen(use_id(msptr
->client_p
)) + 1;
777 if(cur_len
+ tlen
>= BUFSIZE
- 3)
780 sendto_one(client_p
, "%s", buf
);
785 rb_sprintf(t
, "%s%s ", find_channel_status(msptr
, 1),
786 use_id(msptr
->client_p
));
792 if (rb_dlink_list_length(&chptr
->members
) > 0)
794 /* remove trailing space */
797 sendto_one(client_p
, "%s", buf
);
799 if(rb_dlink_list_length(&chptr
->banlist
) > 0)
800 burst_modes_TS6(client_p
, chptr
, &chptr
->banlist
, 'b');
802 if(IsCapable(client_p
, CAP_EX
) &&
803 rb_dlink_list_length(&chptr
->exceptlist
) > 0)
804 burst_modes_TS6(client_p
, chptr
, &chptr
->exceptlist
, 'e');
806 if(IsCapable(client_p
, CAP_IE
) &&
807 rb_dlink_list_length(&chptr
->invexlist
) > 0)
808 burst_modes_TS6(client_p
, chptr
, &chptr
->invexlist
, 'I');
810 if(rb_dlink_list_length(&chptr
->quietlist
) > 0)
811 burst_modes_TS6(client_p
, chptr
, &chptr
->quietlist
, 'q');
813 if(IsCapable(client_p
, CAP_TB
) && chptr
->topic
!= NULL
)
814 sendto_one(client_p
, ":%s TB %s %ld %s%s:%s",
815 me
.id
, chptr
->chname
, (long) chptr
->topic_time
,
816 ConfigChannel
.burst_topicwho
? chptr
->topic_info
: "",
817 ConfigChannel
.burst_topicwho
? " " : "",
820 hchaninfo
.chptr
= chptr
;
821 call_hook(h_burst_channel
, &hchaninfo
);
824 hclientinfo
.target
= NULL
;
825 call_hook(h_burst_finished
, &hclientinfo
);
829 * show_capabilities - show current server capabilities
831 * inputs - pointer to an struct Client
832 * output - pointer to static string
833 * side effects - build up string representing capabilities of server listed
836 show_capabilities(struct Client
*target_p
)
838 static char msgbuf
[BUFSIZE
];
839 struct Capability
*cap
;
842 rb_strlcpy(msgbuf
, " TS6", sizeof(msgbuf
));
844 rb_strlcpy(msgbuf
, " TS", sizeof(msgbuf
));
847 rb_strlcat(msgbuf
, " SSL", sizeof(msgbuf
));
849 if(!IsServer(target_p
) || !target_p
->serv
->caps
) /* short circuit if no caps */
852 for (cap
= captab
; cap
->cap
; ++cap
)
854 if(cap
->cap
& target_p
->serv
->caps
)
855 rb_snprintf_append(msgbuf
, sizeof(msgbuf
), " %s", cap
->name
);
864 * inputs - pointer to a struct Client
869 server_estab(struct Client
*client_p
)
871 struct Client
*target_p
;
872 struct server_conf
*server_p
;
873 hook_data_client hdata
;
876 char note
[HOSTLEN
+ 15];
878 s_assert(NULL
!= client_p
);
882 host
= client_p
->name
;
884 if((server_p
= client_p
->localClient
->att_sconf
) == NULL
)
886 /* This shouldn't happen, better tell the ops... -A1kmm */
887 sendto_realops_snomask(SNO_GENERAL
, is_remote_connect(client_p
) ? L_NETWIDE
: L_ALL
,
888 "Warning: Lost connect{} block for server %s!", host
);
889 return exit_client(client_p
, client_p
, client_p
, "Lost connect{} block!");
892 /* We shouldn't have to check this, it should already done before
893 * server_estab is called. -A1kmm
895 if(client_p
->localClient
->passwd
)
897 memset(client_p
->localClient
->passwd
, 0, strlen(client_p
->localClient
->passwd
));
898 rb_free(client_p
->localClient
->passwd
);
899 client_p
->localClient
->passwd
= NULL
;
902 /* Its got identd , since its a server */
905 /* If there is something in the serv_list, it might be this
906 * connecting server..
908 if(!ServerInfo
.hub
&& serv_list
.head
)
910 if(client_p
!= serv_list
.head
->data
|| serv_list
.head
->next
)
912 ServerStats
.is_ref
++;
913 sendto_one(client_p
, "ERROR :I'm a leaf not a hub");
914 return exit_client(client_p
, client_p
, client_p
, "I'm a leaf");
918 if(IsUnknown(client_p
))
921 * jdc -- 1. Use EmptyString(), not [0] index reference.
922 * 2. Check ->spasswd, not ->passwd.
924 if(!EmptyString(server_p
->spasswd
))
926 sendto_one(client_p
, "PASS %s TS %d :%s",
927 server_p
->spasswd
, TS_CURRENT
, me
.id
);
930 /* pass info to new server */
931 send_capabilities(client_p
, default_server_capabs
932 | (ServerConfCompressed(server_p
) ? CAP_ZIP_SUPPORTED
: 0)
933 | (ServerConfTb(server_p
) ? CAP_TB
: 0));
935 sendto_one(client_p
, "SERVER %s 1 :%s%s",
937 ConfigServerHide
.hidden
? "(H) " : "",
938 (me
.info
[0]) ? (me
.info
) : "IRCers United");
941 if(!rb_set_buffers(client_p
->localClient
->F
, READBUF_SIZE
))
942 ilog_error("rb_set_buffers failed for server");
944 /* Enable compression now */
945 if(IsCapable(client_p
, CAP_ZIP
))
947 start_zlib_session(client_p
);
949 sendto_one(client_p
, "SVINFO %d %d 0 :%ld", TS_CURRENT
, TS_MIN
, (long int)rb_current_time());
951 client_p
->servptr
= &me
;
953 if(IsAnyDead(client_p
))
954 return CLIENT_EXITED
;
958 /* Update the capability combination usage counts */
959 set_chcap_usage_counts(client_p
);
961 rb_dlinkAdd(client_p
, &client_p
->lnode
, &me
.serv
->servers
);
962 del_unknown_ip(client_p
);
963 rb_dlinkMoveNode(&client_p
->localClient
->tnode
, &unknown_list
, &serv_list
);
964 rb_dlinkAddTailAlloc(client_p
, &global_serv_list
);
967 add_to_id_hash(client_p
->id
, client_p
);
969 add_to_client_hash(client_p
->name
, client_p
);
970 /* doesnt duplicate client_p->serv if allocated this struct already */
971 make_server(client_p
);
973 client_p
->serv
->caps
= client_p
->localClient
->caps
;
975 if(client_p
->localClient
->fullcaps
)
977 client_p
->serv
->fullcaps
= rb_strdup(client_p
->localClient
->fullcaps
);
978 rb_free(client_p
->localClient
->fullcaps
);
979 client_p
->localClient
->fullcaps
= NULL
;
982 client_p
->serv
->nameinfo
= scache_connect(client_p
->name
, client_p
->info
, IsHidden(client_p
));
983 client_p
->localClient
->firsttime
= rb_current_time();
984 /* fixing eob timings.. -gnp */
986 if((rb_dlink_list_length(&lclient_list
) + rb_dlink_list_length(&serv_list
)) >
987 (unsigned long)MaxConnectionCount
)
988 MaxConnectionCount
= rb_dlink_list_length(&lclient_list
) +
989 rb_dlink_list_length(&serv_list
);
991 /* Show the real host/IP to admins */
992 sendto_realops_snomask(SNO_GENERAL
, L_ALL
,
993 "Link with %s established: (%s) link",
994 get_server_name(client_p
, SHOW_IP
),
995 show_capabilities(client_p
));
997 ilog(L_SERVER
, "Link with %s established: (%s) link",
998 log_client_name(client_p
, SHOW_IP
), show_capabilities(client_p
));
1001 hdata
.target
= client_p
;
1002 call_hook(h_server_introduced
, &hdata
);
1004 rb_snprintf(note
, sizeof(note
), "Server: %s", client_p
->name
);
1005 rb_note(client_p
->localClient
->F
, note
);
1008 ** Old sendto_serv_but_one() call removed because we now
1009 ** need to send different names to different servers
1010 ** (domain name matching) Send new server to other servers.
1012 RB_DLINK_FOREACH(ptr
, serv_list
.head
)
1014 target_p
= ptr
->data
;
1016 if(target_p
== client_p
)
1019 if(has_id(target_p
) && has_id(client_p
))
1021 sendto_one(target_p
, ":%s SID %s 2 %s :%s%s",
1022 me
.id
, client_p
->name
, client_p
->id
,
1023 IsHidden(client_p
) ? "(H) " : "", client_p
->info
);
1025 if(IsCapable(target_p
, CAP_ENCAP
) &&
1026 !EmptyString(client_p
->serv
->fullcaps
))
1027 sendto_one(target_p
, ":%s ENCAP * GCAP :%s",
1028 client_p
->id
, client_p
->serv
->fullcaps
);
1032 sendto_one(target_p
, ":%s SERVER %s 2 :%s%s",
1033 me
.name
, client_p
->name
,
1034 IsHidden(client_p
) ? "(H) " : "", client_p
->info
);
1036 if(IsCapable(target_p
, CAP_ENCAP
) &&
1037 !EmptyString(client_p
->serv
->fullcaps
))
1038 sendto_one(target_p
, ":%s ENCAP * GCAP :%s",
1039 client_p
->name
, client_p
->serv
->fullcaps
);
1044 ** Pass on my client information to the new server
1046 ** First, pass only servers (idea is that if the link gets
1047 ** cancelled beacause the server was already there,
1048 ** there are no NICK's to be cancelled...). Of course,
1049 ** if cancellation occurs, all this info is sent anyway,
1050 ** and I guess the link dies when a read is attempted...? --msa
1052 ** Note: Link cancellation to occur at this point means
1053 ** that at least two servers from my fragment are building
1054 ** up connection this other fragment at the same time, it's
1055 ** a race condition, not the normal way of operation...
1057 ** ALSO NOTE: using the get_client_name for server names--
1058 ** see previous *WARNING*!!! (Also, original inpath
1061 RB_DLINK_FOREACH(ptr
, global_serv_list
.head
)
1063 target_p
= ptr
->data
;
1065 /* target_p->from == target_p for target_p == client_p */
1066 if(IsMe(target_p
) || target_p
->from
== client_p
)
1069 /* presumption, if target has an id, so does its uplink */
1070 if(has_id(client_p
) && has_id(target_p
))
1071 sendto_one(client_p
, ":%s SID %s %d %s :%s%s",
1072 target_p
->servptr
->id
, target_p
->name
,
1073 target_p
->hopcount
+ 1, target_p
->id
,
1074 IsHidden(target_p
) ? "(H) " : "", target_p
->info
);
1076 sendto_one(client_p
, ":%s SERVER %s %d :%s%s",
1077 target_p
->servptr
->name
,
1078 target_p
->name
, target_p
->hopcount
+ 1,
1079 IsHidden(target_p
) ? "(H) " : "", target_p
->info
);
1081 if(IsCapable(client_p
, CAP_ENCAP
) &&
1082 !EmptyString(target_p
->serv
->fullcaps
))
1083 sendto_one(client_p
, ":%s ENCAP * GCAP :%s",
1084 get_id(target_p
, client_p
),
1085 target_p
->serv
->fullcaps
);
1088 if(has_id(client_p
))
1089 burst_TS6(client_p
);
1091 burst_TS5(client_p
);
1093 /* Always send a PING after connect burst is done */
1094 sendto_one(client_p
, "PING :%s", get_id(&me
, client_p
));
1096 free_pre_client(client_p
);
1098 if (!IsCapable(client_p
, CAP_ZIP
))
1099 send_pop_queue(client_p
);
1105 * New server connection code
1106 * Based upon the stuff floating about in s_bsd.c
1111 serv_connect_resolved(struct Client
*client_p
)
1113 struct rb_sockaddr_storage myipnum
;
1114 char vhoststr
[HOSTIPLEN
];
1115 struct server_conf
*server_p
;
1118 if((server_p
= client_p
->localClient
->att_sconf
) == NULL
)
1120 sendto_realops_snomask(SNO_GENERAL
, is_remote_connect(client_p
) ? L_NETWIDE
: L_ALL
, "Lost connect{} block for %s",
1121 get_server_name(client_p
, HIDE_IP
));
1122 exit_client(client_p
, client_p
, &me
, "Lost connect{} block");
1127 if(client_p
->localClient
->ip
.ss_family
== AF_INET6
)
1128 port
= ntohs(((struct sockaddr_in6
*)&client_p
->localClient
->ip
)->sin6_port
);
1131 port
= ntohs(((struct sockaddr_in
*)&client_p
->localClient
->ip
)->sin_port
);
1133 if(ServerConfVhosted(server_p
))
1135 memcpy(&myipnum
, &server_p
->my_ipnum
, sizeof(myipnum
));
1136 ((struct sockaddr_in
*)&myipnum
)->sin_port
= 0;
1137 myipnum
.ss_family
= server_p
->aftype
;
1140 else if(server_p
->aftype
== AF_INET
&& ServerInfo
.specific_ipv4_vhost
)
1142 memcpy(&myipnum
, &ServerInfo
.ip
, sizeof(myipnum
));
1143 ((struct sockaddr_in
*)&myipnum
)->sin_port
= 0;
1144 myipnum
.ss_family
= AF_INET
;
1145 SET_SS_LEN(&myipnum
, sizeof(struct sockaddr_in
));
1149 else if((server_p
->aftype
== AF_INET6
) && ServerInfo
.specific_ipv6_vhost
)
1151 memcpy(&myipnum
, &ServerInfo
.ip6
, sizeof(myipnum
));
1152 ((struct sockaddr_in6
*)&myipnum
)->sin6_port
= 0;
1153 myipnum
.ss_family
= AF_INET6
;
1154 SET_SS_LEN(&myipnum
, sizeof(struct sockaddr_in6
));
1160 ilog(L_SERVER
, "Connecting to %s[%s] port %d (%s)", client_p
->name
, client_p
->sockhost
, port
,
1162 server_p
->aftype
== AF_INET6
? "IPv6" :
1164 (server_p
->aftype
== AF_INET
? "IPv4" : "?"));
1166 if(ServerConfSSL(server_p
))
1168 rb_connect_tcp(client_p
->localClient
->F
, (struct sockaddr
*)&client_p
->localClient
->ip
,
1169 NULL
, 0, serv_connect_ssl_callback
,
1170 client_p
, ConfigFileEntry
.connect_timeout
);
1173 rb_connect_tcp(client_p
->localClient
->F
, (struct sockaddr
*)&client_p
->localClient
->ip
,
1174 NULL
, 0, serv_connect_callback
,
1175 client_p
, ConfigFileEntry
.connect_timeout
);
1180 inetntop_sock((struct sockaddr
*)&myipnum
, vhoststr
, sizeof vhoststr
);
1181 ilog(L_SERVER
, "Connecting to %s[%s] port %d (%s) (vhost %s)", client_p
->name
, client_p
->sockhost
, port
,
1183 server_p
->aftype
== AF_INET6
? "IPv6" :
1185 (server_p
->aftype
== AF_INET
? "IPv4" : "?"), vhoststr
);
1188 if(ServerConfSSL(server_p
))
1189 rb_connect_tcp(client_p
->localClient
->F
, (struct sockaddr
*)&client_p
->localClient
->ip
,
1190 (struct sockaddr
*) &myipnum
,
1191 GET_SS_LEN(&myipnum
), serv_connect_ssl_callback
, client_p
,
1192 ConfigFileEntry
.connect_timeout
);
1194 rb_connect_tcp(client_p
->localClient
->F
, (struct sockaddr
*)&client_p
->localClient
->ip
,
1195 (struct sockaddr
*) &myipnum
,
1196 GET_SS_LEN(&myipnum
), serv_connect_callback
, client_p
,
1197 ConfigFileEntry
.connect_timeout
);
1203 serv_connect_dns_callback(void *vptr
, struct DNSReply
*reply
)
1205 struct Client
*client_p
= vptr
;
1208 rb_free(client_p
->localClient
->dnsquery
);
1209 client_p
->localClient
->dnsquery
= NULL
;
1213 sendto_realops_snomask(SNO_GENERAL
, is_remote_connect(client_p
) ? L_NETWIDE
: L_ALL
, "Cannot resolve hostname for %s",
1214 get_server_name(client_p
, HIDE_IP
));
1215 ilog(L_SERVER
, "Cannot resolve hostname for %s",
1216 log_client_name(client_p
, HIDE_IP
));
1217 exit_client(client_p
, client_p
, &me
, "Cannot resolve hostname");
1221 if(reply
->addr
.ss_family
== AF_INET6
)
1222 port
= ((struct sockaddr_in6
*)&client_p
->localClient
->ip
)->sin6_port
;
1225 port
= ((struct sockaddr_in
*)&client_p
->localClient
->ip
)->sin_port
;
1226 memcpy(&client_p
->localClient
->ip
, &reply
->addr
, sizeof(client_p
->localClient
->ip
));
1228 if(reply
->addr
.ss_family
== AF_INET6
)
1229 ((struct sockaddr_in6
*)&client_p
->localClient
->ip
)->sin6_port
= port
;
1232 ((struct sockaddr_in
*)&client_p
->localClient
->ip
)->sin_port
= port
;
1233 /* Set sockhost properly now -- jilles */
1234 inetntop_sock((struct sockaddr
*)&client_p
->localClient
->ip
,
1235 client_p
->sockhost
, sizeof client_p
->sockhost
);
1236 serv_connect_resolved(client_p
);
1240 * serv_connect() - initiate a server connection
1242 * inputs - pointer to conf
1243 * - pointer to client doing the connet
1247 * This code initiates a connection to a server. It first checks to make
1248 * sure the given server exists. If this is the case, it creates a socket,
1249 * creates a client, saves the socket information in the client, and
1250 * initiates a connection to the server through rb_connect_tcp(). The
1251 * completion of this goes through serv_completed_connection().
1253 * We return 1 if the connection is attempted, since we don't know whether
1254 * it suceeded or not, and 0 if it fails in here somewhere.
1257 serv_connect(struct server_conf
*server_p
, struct Client
*by
)
1259 struct Client
*client_p
;
1260 struct rb_sockaddr_storage theiripnum
;
1262 char note
[HOSTLEN
+ 10];
1264 s_assert(server_p
!= NULL
);
1265 if(server_p
== NULL
)
1269 * Make sure this server isn't already connected
1271 if((client_p
= find_server(NULL
, server_p
->name
)))
1273 sendto_realops_snomask(SNO_GENERAL
, L_ALL
,
1274 "Server %s already present from %s",
1275 server_p
->name
, get_server_name(client_p
, SHOW_IP
));
1276 if(by
&& IsPerson(by
) && !MyClient(by
))
1277 sendto_one_notice(by
, ":Server %s already present from %s",
1278 server_p
->name
, get_server_name(client_p
, SHOW_IP
));
1282 /* create a socket for the server connection */
1283 if((F
= rb_socket(server_p
->aftype
, SOCK_STREAM
, 0, NULL
)) == NULL
)
1285 ilog_error("opening a stream socket");
1289 rb_snprintf(note
, sizeof note
, "Server: %s", server_p
->name
);
1292 /* Create a local client */
1293 client_p
= make_client(NULL
);
1295 /* Copy in the server, hostname, fd
1296 * The sockhost may be a hostname, this will be corrected later
1299 strlcpy(client_p
->name
, server_p
->name
, sizeof(client_p
->name
));
1300 strlcpy(client_p
->host
, server_p
->host
, sizeof(client_p
->host
));
1301 strlcpy(client_p
->sockhost
, server_p
->host
, sizeof(client_p
->sockhost
));
1302 client_p
->localClient
->F
= F
;
1303 add_to_cli_fd_hash(client_p
);
1306 * Set up the initial server evilness, ripped straight from
1307 * connect_server(), so don't blame me for it being evil.
1311 if(!rb_set_buffers(client_p
->localClient
->F
, READBUF_SIZE
))
1313 ilog_error("setting the buffer size for a server connection");
1317 * Attach config entries to client here rather than in
1318 * serv_connect_callback(). This to avoid null pointer references.
1320 attach_server_conf(client_p
, server_p
);
1323 * at this point we have a connection in progress and C/N lines
1324 * attached to the client, the socket info should be saved in the
1325 * client and it should either be resolved or have a valid address.
1327 * The socket has been connected or connect is in progress.
1329 make_server(client_p
);
1330 if(by
&& IsPerson(by
))
1332 strcpy(client_p
->serv
->by
, by
->name
);
1333 if(client_p
->serv
->user
)
1334 free_user(client_p
->serv
->user
, NULL
);
1335 client_p
->serv
->user
= by
->user
;
1340 strcpy(client_p
->serv
->by
, "AutoConn.");
1341 if(client_p
->serv
->user
)
1342 free_user(client_p
->serv
->user
, NULL
);
1343 client_p
->serv
->user
= NULL
;
1345 SetConnecting(client_p
);
1346 rb_dlinkAddTail(client_p
, &client_p
->node
, &global_client_list
);
1348 if (rb_inet_pton_sock(server_p
->host
, (struct sockaddr
*)&theiripnum
) > 0)
1350 memcpy(&client_p
->localClient
->ip
, &theiripnum
, sizeof(client_p
->localClient
->ip
));
1352 if(theiripnum
.ss_family
== AF_INET6
)
1353 ((struct sockaddr_in6
*)&client_p
->localClient
->ip
)->sin6_port
= htons(server_p
->port
);
1356 ((struct sockaddr_in
*)&client_p
->localClient
->ip
)->sin_port
= htons(server_p
->port
);
1358 return serv_connect_resolved(client_p
);
1363 if(theiripnum
.ss_family
== AF_INET6
)
1364 ((struct sockaddr_in6
*)&client_p
->localClient
->ip
)->sin6_port
= htons(server_p
->port
);
1367 ((struct sockaddr_in
*)&client_p
->localClient
->ip
)->sin_port
= htons(server_p
->port
);
1369 client_p
->localClient
->dnsquery
= rb_malloc(sizeof(struct DNSQuery
));
1370 client_p
->localClient
->dnsquery
->ptr
= client_p
;
1371 client_p
->localClient
->dnsquery
->callback
= serv_connect_dns_callback
;
1372 gethost_byname_type(server_p
->host
, client_p
->localClient
->dnsquery
,
1374 server_p
->aftype
== AF_INET6
? T_AAAA
:
1382 serv_connect_ev(void *data
)
1384 struct Client
*client_p
= data
;
1385 serv_connect_callback(client_p
->localClient
->F
, RB_OK
, client_p
);
1389 serv_connect_ssl_callback(rb_fde_t
*F
, int status
, void *data
)
1391 struct Client
*client_p
= data
;
1395 /* XXX deal with failure */
1398 rb_connect_sockaddr(F
, (struct sockaddr
*)&client_p
->localClient
->ip
, sizeof(client_p
->localClient
->ip
));
1399 rb_socketpair(AF_UNIX
, SOCK_STREAM
, 0, &xF
[0], &xF
[1], "Outgoing ssld connection");
1400 del_from_cli_fd_hash(client_p
);
1401 client_p
->localClient
->F
= xF
[0];
1402 add_to_cli_fd_hash(client_p
);
1404 client_p
->localClient
->ssl_ctl
= start_ssld_connect(F
, xF
[1], rb_get_fd(xF
[0]));
1406 rb_event_addonce("serv_connect_ev", serv_connect_ev
, client_p
, 1);
1410 * serv_connect_callback() - complete a server connection.
1412 * This routine is called after the server connection attempt has
1413 * completed. If unsucessful, an error is sent to ops and the client
1414 * is closed. If sucessful, it goes through the initialisation/check
1415 * procedures, the capabilities are sent, and the socket is then
1416 * marked for reading.
1419 serv_connect_callback(rb_fde_t
*F
, int status
, void *data
)
1421 struct Client
*client_p
= data
;
1422 struct server_conf
*server_p
;
1425 /* First, make sure its a real client! */
1426 s_assert(client_p
!= NULL
);
1427 s_assert(client_p
->localClient
->F
== F
);
1429 if(client_p
== NULL
)
1432 /* while we were waiting for the callback, its possible this already
1435 if(find_server(NULL
, client_p
->name
) != NULL
)
1437 exit_client(client_p
, client_p
, &me
, "Server Exists");
1441 if(client_p
->localClient
->ssl_ctl
== NULL
)
1442 rb_connect_sockaddr(F
, (struct sockaddr
*)&client_p
->localClient
->ip
, sizeof(client_p
->localClient
->ip
));
1444 /* Check the status */
1447 /* COMM_ERR_TIMEOUT wont have an errno associated with it,
1448 * the others will.. --fl
1450 if(status
== RB_ERR_TIMEOUT
)
1452 sendto_realops_snomask(SNO_GENERAL
, is_remote_connect(client_p
) ? L_NETWIDE
: L_ALL
,
1453 "Error connecting to %s[%s]: %s",
1455 #ifdef HIDE_SERVERS_IPS
1461 ilog(L_SERVER
, "Error connecting to %s[%s]: %s",
1462 client_p
->name
, client_p
->sockhost
,
1467 errstr
= strerror(rb_get_sockerr(F
));
1468 sendto_realops_snomask(SNO_GENERAL
, is_remote_connect(client_p
) ? L_NETWIDE
: L_ALL
,
1469 "Error connecting to %s[%s]: %s (%s)",
1471 #ifdef HIDE_SERVERS_IPS
1476 rb_errstr(status
), errstr
);
1477 ilog(L_SERVER
, "Error connecting to %s[%s]: %s (%s)",
1478 client_p
->name
, client_p
->sockhost
,
1479 rb_errstr(status
), errstr
);
1482 exit_client(client_p
, client_p
, &me
, rb_errstr(status
));
1486 /* COMM_OK, so continue the connection procedure */
1487 /* Get the C/N lines */
1488 if((server_p
= client_p
->localClient
->att_sconf
) == NULL
)
1490 sendto_realops_snomask(SNO_GENERAL
, is_remote_connect(client_p
) ? L_NETWIDE
: L_ALL
, "Lost connect{} block for %s",
1491 get_server_name(client_p
, HIDE_IP
));
1492 exit_client(client_p
, client_p
, &me
, "Lost connect{} block");
1496 /* Next, send the initial handshake */
1497 SetHandshake(client_p
);
1499 /* kludge, if we're not using TS6, dont ever send
1500 * ourselves as being TS6 capable.
1502 if(!EmptyString(server_p
->spasswd
))
1504 sendto_one(client_p
, "PASS %s TS %d :%s",
1505 server_p
->spasswd
, TS_CURRENT
, me
.id
);
1508 /* pass my info to the new server */
1509 send_capabilities(client_p
, default_server_capabs
1510 | (ServerConfCompressed(server_p
) ? CAP_ZIP_SUPPORTED
: 0)
1511 | (ServerConfTb(server_p
) ? CAP_TB
: 0));
1513 sendto_one(client_p
, "SERVER %s 1 :%s%s",
1515 ConfigServerHide
.hidden
? "(H) " : "", me
.info
);
1518 * If we've been marked dead because a send failed, just exit
1519 * here now and save everyone the trouble of us ever existing.
1521 if(IsAnyDead(client_p
))
1523 sendto_realops_snomask(SNO_GENERAL
, is_remote_connect(client_p
) ? L_NETWIDE
: L_ALL
,
1524 "%s went dead during handshake", client_p
->name
);
1525 exit_client(client_p
, client_p
, &me
, "Went dead during handshake");
1529 /* don't move to serv_list yet -- we haven't sent a burst! */
1531 /* If we get here, we're ok, so lets start reading some data */
1532 read_packet(F
, client_p
);
1535 #ifndef HAVE_SOCKETPAIR
1537 inet_socketpair(int d
, int type
, int protocol
, int sv
[2])
1539 struct sockaddr_in addr1
, addr2
, addr3
;
1540 int addr3_len
= sizeof(addr3
);
1542 int port_no
= 20000;
1544 if(d
!= AF_INET
|| type
!= SOCK_STREAM
|| protocol
)
1546 errno
= EAFNOSUPPORT
;
1549 if(((sv
[0] = socket(AF_INET
, SOCK_STREAM
, 0)) < 0) || ((sv
[1] = socket(AF_INET
, SOCK_STREAM
, 0)) < 0))
1552 addr1
.sin_port
= htons(port_no
);
1553 addr1
.sin_family
= AF_INET
;
1554 addr1
.sin_addr
.s_addr
= htonl(INADDR_LOOPBACK
);
1555 while ((rc
= bind (sv
[0], (struct sockaddr
*) &addr1
, sizeof (addr1
))) < 0 && errno
== EADDRINUSE
)
1556 addr1
.sin_port
= htons(++port_no
);
1561 if(listen(sv
[0], 1) < 0)
1568 addr2
.sin_port
= htons(port_no
);
1569 addr2
.sin_family
= AF_INET
;
1570 addr2
.sin_addr
.s_addr
= htonl(INADDR_LOOPBACK
);
1571 if(connect (sv
[1], (struct sockaddr
*) &addr2
, sizeof (addr2
)) < 0)
1578 if((fd
= accept(sv
[1], (struct sockaddr
*) &addr3
, &addr3_len
)) < 0)