2 * ircd-ratbox: A slightly useful ircd.
3 * s_serv.c: Server related functions.
5 * Copyright (C) 1990 Jarkko Oikarinen and University of Oulu, Co Center
6 * Copyright (C) 1996-2002 Hybrid Development Team
7 * Copyright (C) 2002-2005 ircd-ratbox development team
9 * This program is free software; you can redistribute it and/or modify
10 * it under the terms of the GNU General Public License as published by
11 * the Free Software Foundation; either version 2 of the License, or
12 * (at your option) any later version.
14 * This program is distributed in the hope that it will be useful,
15 * but WITHOUT ANY WARRANTY; without even the implied warranty of
16 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
17 * GNU General Public License for more details.
19 * You should have received a copy of the GNU General Public License
20 * along with this program; if not, write to the Free Software
21 * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307
24 * $Id: s_serv.c 3550 2007-08-09 06:47:26Z nenolod $
30 #include <openssl/rsa.h>
40 #include "ircd_defs.h"
45 #include "s_newconf.h"
52 #include "channel.h" /* chcap_usage_counts stuff... */
59 #define INADDR_NONE ((unsigned int) 0xffffffff)
62 int MaxConnectionCount
= 1;
63 int MaxClientCount
= 1;
64 int refresh_user_links
= 0;
66 static char buf
[BUFSIZE
];
69 * list of recognized server capabilities. "TS" is not on the list
70 * because all servers that we talk to already do TS, and the kludged
71 * extra argument to "PASS" takes care of checking that. -orabidoo
73 struct Capability captab
[] = {
80 { "KNOCK", CAP_KNOCK
},
83 { "UNKLN", CAP_UNKLN
},
84 { "CLUSTER", CAP_CLUSTER
},
85 { "ENCAP", CAP_ENCAP
},
86 { "SERVICES", CAP_SERVICE
},
87 { "RSFNC", CAP_RSFNC
},
90 { "EOPMOD", CAP_EOPMOD
},
92 { "MLOCK", CAP_MLOCK
},
96 static CNCB serv_connect_callback
;
97 static CNCB serv_connect_ssl_callback
;
100 * hunt_server - Do the basic thing in delivering the message (command)
101 * across the relays to the specific server (server) for
104 * Note: The command is a format string and *MUST* be
105 * of prefixed style (e.g. ":%s COMMAND %s ...").
106 * Command can have only max 8 parameters.
108 * server parv[server] is the parameter identifying the
112 * parv[server] is replaced with the pointer to the
113 * real servername from the matched client (I'm lazy
116 * returns: (see #defines)
119 hunt_server(struct Client
*client_p
, struct Client
*source_p
,
120 const char *command
, int server
, int parc
, const char *parv
[])
122 struct Client
*target_p
;
129 * Assume it's me, if no server
131 if(parc
<= server
|| EmptyString(parv
[server
]) ||
132 match(parv
[server
], me
.name
) || (strcmp(parv
[server
], me
.id
) == 0))
133 return (HUNTED_ISME
);
135 new = LOCAL_COPY(parv
[server
]);
138 * These are to pickup matches that would cause the following
139 * message to go in the wrong direction while doing quick fast
140 * non-matching lookups.
142 if(MyClient(source_p
))
143 target_p
= find_named_client(new);
145 target_p
= find_client(new);
148 if(target_p
->from
== source_p
->from
&& !MyConnect(target_p
))
152 wilds
= (strchr(new, '?') || strchr(new, '*'));
155 * Again, if there are no wild cards involved in the server
156 * name, use the hash lookup
158 if(!target_p
&& wilds
)
160 RB_DLINK_FOREACH(ptr
, global_client_list
.head
)
162 if(match(new, ((struct Client
*) (ptr
->data
))->name
))
164 target_p
= ptr
->data
;
170 if(target_p
&& !IsRegistered(target_p
))
175 if(IsMe(target_p
) || MyClient(target_p
))
179 parv
[server
] = get_id(target_p
, target_p
);
181 sendto_one(target_p
, command
, get_id(source_p
, target_p
),
182 parv
[1], parv
[2], parv
[3], parv
[4], parv
[5], parv
[6], parv
[7], parv
[8]);
184 return (HUNTED_PASS
);
187 if(MyClient(source_p
) || !IsDigit(parv
[server
][0]))
188 sendto_one_numeric(source_p
, ERR_NOSUCHSERVER
,
189 form_str(ERR_NOSUCHSERVER
), parv
[server
]);
190 return (HUNTED_NOSUCH
);
194 * try_connections - scan through configuration and try new connections.
195 * Returns the calendar time when the next call to this
196 * function should be made latest. (No harm done if this
197 * is called earlier or later...)
200 try_connections(void *unused
)
202 struct Client
*client_p
;
203 struct server_conf
*server_p
= NULL
;
204 struct server_conf
*tmp_p
;
207 int connecting
= FALSE
;
211 RB_DLINK_FOREACH(ptr
, server_conf_list
.head
)
215 if(ServerConfIllegal(tmp_p
) || !ServerConfAutoconn(tmp_p
))
218 /* don't allow ssl connections if ssl isn't setup */
219 if(ServerConfSSL(tmp_p
) && (!ssl_ok
|| !get_ssld_count()))
222 cltmp
= tmp_p
->class;
225 * Skip this entry if the use of it is still on hold until
226 * future. Otherwise handle this entry (and set it on hold
227 * until next time). Will reset only hold times, if already
228 * made one successfull connection... [this algorithm is
229 * a bit fuzzy... -- msa >;) ]
231 if(tmp_p
->hold
> rb_current_time())
233 if(next
> tmp_p
->hold
|| next
== 0)
238 confrq
= get_con_freq(cltmp
);
239 tmp_p
->hold
= rb_current_time() + confrq
;
242 * Found a CONNECT config with port specified, scan clients
243 * and see if this server is already connected?
245 client_p
= find_server(NULL
, tmp_p
->name
);
247 if(!client_p
&& (CurrUsers(cltmp
) < MaxUsers(cltmp
)) && !connecting
)
251 /* We connect only one at time... */
255 if((next
> tmp_p
->hold
) || (next
== 0))
259 /* TODO: change this to set active flag to 0 when added to event! --Habeeb */
260 if(GlobalSetOptions
.autoconn
== 0)
266 /* move this connect entry to end.. */
267 rb_dlinkDelete(&server_p
->node
, &server_conf_list
);
268 rb_dlinkAddTail(server_p
, &server_p
->node
, &server_conf_list
);
271 * We used to only print this if serv_connect() actually
272 * suceeded, but since rb_tcp_connect() can call the callback
273 * immediately if there is an error, we were getting error messages
274 * in the wrong order. SO, we just print out the activated line,
275 * and let serv_connect() / serv_connect_callback() print an
276 * error afterwards if it fails.
279 sendto_realops_snomask(SNO_GENERAL
, L_ALL
,
280 "Connection to %s activated",
283 serv_connect(server_p
, 0);
287 check_server(const char *name
, struct Client
*client_p
)
289 struct server_conf
*server_p
= NULL
;
290 struct server_conf
*tmp_p
;
294 s_assert(NULL
!= client_p
);
298 if(!(client_p
->localClient
->passwd
))
301 if(strlen(name
) > HOSTLEN
)
304 RB_DLINK_FOREACH(ptr
, server_conf_list
.head
)
308 if(ServerConfIllegal(tmp_p
))
311 if(!match(tmp_p
->name
, name
))
316 /* XXX: Fix me for IPv6 */
317 /* XXX sockhost is the IPv4 ip as a string */
318 if(match(tmp_p
->host
, client_p
->host
) ||
319 match(tmp_p
->host
, client_p
->sockhost
))
325 if(ServerConfEncrypted(tmp_p
))
327 if(!strcmp(tmp_p
->passwd
, rb_crypt(client_p
->localClient
->passwd
,
336 else if(strcmp(tmp_p
->passwd
, client_p
->localClient
->passwd
))
342 if(!client_p
->certfp
|| strcasecmp(tmp_p
->certfp
, client_p
->certfp
) != 0)
354 if(ServerConfSSL(server_p
) && client_p
->localClient
->ssl_ctl
== NULL
)
359 attach_server_conf(client_p
, server_p
);
361 /* clear ZIP/TB if they support but we dont want them */
363 if(!ServerConfCompressed(server_p
))
365 ClearCap(client_p
, CAP_ZIP
);
367 if(!ServerConfTb(server_p
))
368 ClearCap(client_p
, CAP_TB
);
376 * inputs - Client pointer to send to
377 * - int flag of capabilities that this server has
379 * side effects - send the CAPAB line to a server -orabidoo
383 send_capabilities(struct Client
*client_p
, int cap_can_send
)
385 struct Capability
*cap
;
386 char msgbuf
[BUFSIZE
];
392 for (cap
= captab
; cap
->name
; ++cap
)
394 if(cap
->cap
& cap_can_send
)
396 tl
= rb_sprintf(t
, "%s ", cap
->name
);
404 sendto_one(client_p
, "CAPAB :%s", msgbuf
);
408 burst_ban(struct Client
*client_p
)
411 struct ConfItem
*aconf
;
412 const char *type
, *oper
;
413 /* +5 for !,@,{,} and null */
414 char operbuf
[NICKLEN
+ USERLEN
+ HOSTLEN
+ HOSTLEN
+ 5];
418 melen
= strlen(me
.name
);
419 RB_DLINK_FOREACH(ptr
, prop_bans
.head
)
423 /* Skip expired stuff. */
424 if(aconf
->lifetime
< rb_current_time())
426 switch(aconf
->status
& ~CONF_ILLEGAL
)
428 case CONF_KILL
: type
= "K"; break;
429 case CONF_DLINE
: type
= "D"; break;
430 case CONF_XLINE
: type
= "X"; break;
431 case CONF_RESV_NICK
: type
= "R"; break;
432 case CONF_RESV_CHANNEL
: type
= "R"; break;
436 oper
= aconf
->info
.oper
;
437 if(aconf
->flags
& CONF_FLAGS_MYOPER
)
439 /* Our operator{} names may not be meaningful
440 * to other servers, so rewrite to our server
443 rb_strlcpy(operbuf
, aconf
->info
.oper
, sizeof buf
);
444 p
= strrchr(operbuf
, '{');
446 operbuf
+ sizeof operbuf
- p
> (ptrdiff_t)(melen
+ 2))
448 memcpy(p
+ 1, me
.name
, melen
);
454 sendto_one(client_p
, ":%s BAN %s %s %s %lu %d %d %s :%s%s%s",
457 aconf
->user
? aconf
->user
: "*", aconf
->host
,
458 (unsigned long)aconf
->created
,
459 (int)(aconf
->hold
- aconf
->created
),
460 (int)(aconf
->lifetime
- aconf
->created
),
463 aconf
->spasswd
? "|" : "",
464 aconf
->spasswd
? aconf
->spasswd
: "");
470 * input - client to burst to, channel name, list to burst, mode flag
472 * side effects - client is sent a list of +b, +e, or +I modes
475 burst_modes_TS6(struct Client
*client_p
, struct Channel
*chptr
,
476 rb_dlink_list
*list
, char flag
)
485 cur_len
= mlen
= rb_sprintf(buf
, ":%s BMASK %ld %s %c :",
486 me
.id
, (long) chptr
->channelts
, chptr
->chname
, flag
);
489 RB_DLINK_FOREACH(ptr
, list
->head
)
493 tlen
= strlen(banptr
->banstr
) + 1;
496 if(cur_len
+ tlen
> BUFSIZE
- 3)
498 /* the one we're trying to send doesnt fit at all! */
505 /* chop off trailing space and send.. */
507 sendto_one(client_p
, "%s", buf
);
512 rb_sprintf(t
, "%s ", banptr
->banstr
);
517 /* cant ever exit the loop above without having modified buf,
518 * chop off trailing space and send.
521 sendto_one(client_p
, "%s", buf
);
527 * inputs - client (server) to send nick towards
528 * - client to send nick for
530 * side effects - NICK message is sent towards given client_p
533 burst_TS6(struct Client
*client_p
)
535 static char ubuf
[12];
536 struct Client
*target_p
;
537 struct Channel
*chptr
;
538 struct membership
*msptr
;
539 hook_data_client hclientinfo
;
540 hook_data_channel hchaninfo
;
547 hclientinfo
.client
= hchaninfo
.client
= client_p
;
549 RB_DLINK_FOREACH(ptr
, global_client_list
.head
)
551 target_p
= ptr
->data
;
553 if(!IsPerson(target_p
))
556 send_umode(NULL
, target_p
, 0, 0, ubuf
);
563 if(IsCapable(client_p
, CAP_EUID
))
564 sendto_one(client_p
, ":%s EUID %s %d %ld %s %s %s %s %s %s %s :%s",
565 target_p
->servptr
->id
, target_p
->name
,
566 target_p
->hopcount
+ 1,
567 (long) target_p
->tsinfo
, ubuf
,
568 target_p
->username
, target_p
->host
,
569 IsIPSpoof(target_p
) ? "0" : target_p
->sockhost
,
571 IsDynSpoof(target_p
) ? target_p
->orighost
: "*",
572 EmptyString(target_p
->user
->suser
) ? "*" : target_p
->user
->suser
,
575 sendto_one(client_p
, ":%s UID %s %d %ld %s %s %s %s %s :%s",
576 target_p
->servptr
->id
, target_p
->name
,
577 target_p
->hopcount
+ 1,
578 (long) target_p
->tsinfo
, ubuf
,
579 target_p
->username
, target_p
->host
,
580 IsIPSpoof(target_p
) ? "0" : target_p
->sockhost
,
581 target_p
->id
, target_p
->info
);
583 if(!EmptyString(target_p
->certfp
))
584 sendto_one(client_p
, ":%s ENCAP * CERTFP :%s",
585 use_id(target_p
), target_p
->certfp
);
587 if(!IsCapable(client_p
, CAP_EUID
))
589 if(IsDynSpoof(target_p
))
590 sendto_one(client_p
, ":%s ENCAP * REALHOST %s",
591 use_id(target_p
), target_p
->orighost
);
592 if(!EmptyString(target_p
->user
->suser
))
593 sendto_one(client_p
, ":%s ENCAP * LOGIN %s",
594 use_id(target_p
), target_p
->user
->suser
);
597 if(ConfigFileEntry
.burst_away
&& !EmptyString(target_p
->user
->away
))
598 sendto_one(client_p
, ":%s AWAY :%s",
600 target_p
->user
->away
);
602 hclientinfo
.target
= target_p
;
603 call_hook(h_burst_client
, &hclientinfo
);
606 RB_DLINK_FOREACH(ptr
, global_channel_list
.head
)
610 if(*chptr
->chname
!= '#')
613 cur_len
= mlen
= rb_sprintf(buf
, ":%s SJOIN %ld %s %s :", me
.id
,
614 (long) chptr
->channelts
, chptr
->chname
,
615 channel_modes(chptr
, client_p
));
619 RB_DLINK_FOREACH(uptr
, chptr
->members
.head
)
623 tlen
= strlen(use_id(msptr
->client_p
)) + 1;
629 if(cur_len
+ tlen
>= BUFSIZE
- 3)
632 sendto_one(client_p
, "%s", buf
);
637 rb_sprintf(t
, "%s%s ", find_channel_status(msptr
, 1),
638 use_id(msptr
->client_p
));
644 if (rb_dlink_list_length(&chptr
->members
) > 0)
646 /* remove trailing space */
649 sendto_one(client_p
, "%s", buf
);
651 if(rb_dlink_list_length(&chptr
->banlist
) > 0)
652 burst_modes_TS6(client_p
, chptr
, &chptr
->banlist
, 'b');
654 if(IsCapable(client_p
, CAP_EX
) &&
655 rb_dlink_list_length(&chptr
->exceptlist
) > 0)
656 burst_modes_TS6(client_p
, chptr
, &chptr
->exceptlist
, 'e');
658 if(IsCapable(client_p
, CAP_IE
) &&
659 rb_dlink_list_length(&chptr
->invexlist
) > 0)
660 burst_modes_TS6(client_p
, chptr
, &chptr
->invexlist
, 'I');
662 if(rb_dlink_list_length(&chptr
->quietlist
) > 0)
663 burst_modes_TS6(client_p
, chptr
, &chptr
->quietlist
, 'q');
665 if(IsCapable(client_p
, CAP_TB
) && chptr
->topic
!= NULL
)
666 sendto_one(client_p
, ":%s TB %s %ld %s%s:%s",
667 me
.id
, chptr
->chname
, (long) chptr
->topic_time
,
668 ConfigChannel
.burst_topicwho
? chptr
->topic_info
: "",
669 ConfigChannel
.burst_topicwho
? " " : "",
672 if(IsCapable(client_p
, CAP_MLOCK
))
673 sendto_one(client_p
, ":%s MLOCK %ld %s :%s",
674 me
.id
, (long) chptr
->channelts
, chptr
->chname
,
675 EmptyString(chptr
->mode_lock
) ? "" : chptr
->mode_lock
);
677 hchaninfo
.chptr
= chptr
;
678 call_hook(h_burst_channel
, &hchaninfo
);
681 hclientinfo
.target
= NULL
;
682 call_hook(h_burst_finished
, &hclientinfo
);
686 * show_capabilities - show current server capabilities
688 * inputs - pointer to an struct Client
689 * output - pointer to static string
690 * side effects - build up string representing capabilities of server listed
693 show_capabilities(struct Client
*target_p
)
695 static char msgbuf
[BUFSIZE
];
696 struct Capability
*cap
;
699 rb_strlcpy(msgbuf
, " TS6", sizeof(msgbuf
));
702 rb_strlcat(msgbuf
, " SSL", sizeof(msgbuf
));
704 if(!IsServer(target_p
) || !target_p
->serv
->caps
) /* short circuit if no caps */
707 for (cap
= captab
; cap
->cap
; ++cap
)
709 if(cap
->cap
& target_p
->serv
->caps
)
710 rb_snprintf_append(msgbuf
, sizeof(msgbuf
), " %s", cap
->name
);
719 * inputs - pointer to a struct Client
724 server_estab(struct Client
*client_p
)
726 struct Client
*target_p
;
727 struct server_conf
*server_p
;
728 hook_data_client hdata
;
731 char note
[HOSTLEN
+ 15];
733 s_assert(NULL
!= client_p
);
737 host
= client_p
->name
;
739 if((server_p
= client_p
->localClient
->att_sconf
) == NULL
)
741 /* This shouldn't happen, better tell the ops... -A1kmm */
742 sendto_realops_snomask(SNO_GENERAL
, is_remote_connect(client_p
) ? L_NETWIDE
: L_ALL
,
743 "Warning: Lost connect{} block for server %s!", host
);
744 return exit_client(client_p
, client_p
, client_p
, "Lost connect{} block!");
747 /* We shouldn't have to check this, it should already done before
748 * server_estab is called. -A1kmm
750 if(client_p
->localClient
->passwd
)
752 memset(client_p
->localClient
->passwd
, 0, strlen(client_p
->localClient
->passwd
));
753 rb_free(client_p
->localClient
->passwd
);
754 client_p
->localClient
->passwd
= NULL
;
757 /* Its got identd , since its a server */
760 /* If there is something in the serv_list, it might be this
761 * connecting server..
763 if(!ServerInfo
.hub
&& serv_list
.head
)
765 if(client_p
!= serv_list
.head
->data
|| serv_list
.head
->next
)
767 ServerStats
.is_ref
++;
768 sendto_one(client_p
, "ERROR :I'm a leaf not a hub");
769 return exit_client(client_p
, client_p
, client_p
, "I'm a leaf");
773 if(IsUnknown(client_p
))
775 /* the server may be linking based on certificate fingerprint now. --nenolod */
776 sendto_one(client_p
, "PASS %s TS %d :%s",
777 EmptyString(server_p
->spasswd
) ? "*" : server_p
->spasswd
, TS_CURRENT
, me
.id
);
779 /* pass info to new server */
780 send_capabilities(client_p
, default_server_capabs
781 | (ServerConfCompressed(server_p
) ? CAP_ZIP_SUPPORTED
: 0)
782 | (ServerConfTb(server_p
) ? CAP_TB
: 0));
784 sendto_one(client_p
, "SERVER %s 1 :%s%s",
786 ConfigServerHide
.hidden
? "(H) " : "",
787 (me
.info
[0]) ? (me
.info
) : "IRCers United");
790 if(!rb_set_buffers(client_p
->localClient
->F
, READBUF_SIZE
))
791 ilog_error("rb_set_buffers failed for server");
793 /* Enable compression now */
794 if(IsCapable(client_p
, CAP_ZIP
))
796 start_zlib_session(client_p
);
798 sendto_one(client_p
, "SVINFO %d %d 0 :%ld", TS_CURRENT
, TS_MIN
, (long int)rb_current_time());
800 client_p
->servptr
= &me
;
802 if(IsAnyDead(client_p
))
803 return CLIENT_EXITED
;
807 /* Update the capability combination usage counts */
808 set_chcap_usage_counts(client_p
);
810 rb_dlinkAdd(client_p
, &client_p
->lnode
, &me
.serv
->servers
);
811 rb_dlinkMoveNode(&client_p
->localClient
->tnode
, &unknown_list
, &serv_list
);
812 rb_dlinkAddTailAlloc(client_p
, &global_serv_list
);
815 add_to_id_hash(client_p
->id
, client_p
);
817 add_to_client_hash(client_p
->name
, client_p
);
818 /* doesnt duplicate client_p->serv if allocated this struct already */
819 make_server(client_p
);
821 client_p
->serv
->caps
= client_p
->localClient
->caps
;
823 if(client_p
->localClient
->fullcaps
)
825 client_p
->serv
->fullcaps
= rb_strdup(client_p
->localClient
->fullcaps
);
826 rb_free(client_p
->localClient
->fullcaps
);
827 client_p
->localClient
->fullcaps
= NULL
;
830 client_p
->serv
->nameinfo
= scache_connect(client_p
->name
, client_p
->info
, IsHidden(client_p
));
831 client_p
->localClient
->firsttime
= rb_current_time();
832 /* fixing eob timings.. -gnp */
834 if((rb_dlink_list_length(&lclient_list
) + rb_dlink_list_length(&serv_list
)) >
835 (unsigned long)MaxConnectionCount
)
836 MaxConnectionCount
= rb_dlink_list_length(&lclient_list
) +
837 rb_dlink_list_length(&serv_list
);
839 /* Show the real host/IP to admins */
840 sendto_realops_snomask(SNO_GENERAL
, L_ALL
,
841 "Link with %s established: (%s) link",
843 show_capabilities(client_p
));
845 ilog(L_SERVER
, "Link with %s established: (%s) link",
846 log_client_name(client_p
, SHOW_IP
), show_capabilities(client_p
));
849 hdata
.target
= client_p
;
850 call_hook(h_server_introduced
, &hdata
);
852 rb_snprintf(note
, sizeof(note
), "Server: %s", client_p
->name
);
853 rb_note(client_p
->localClient
->F
, note
);
856 ** Old sendto_serv_but_one() call removed because we now
857 ** need to send different names to different servers
858 ** (domain name matching) Send new server to other servers.
860 RB_DLINK_FOREACH(ptr
, serv_list
.head
)
862 target_p
= ptr
->data
;
864 if(target_p
== client_p
)
867 if(has_id(target_p
) && has_id(client_p
))
869 sendto_one(target_p
, ":%s SID %s 2 %s :%s%s",
870 me
.id
, client_p
->name
, client_p
->id
,
871 IsHidden(client_p
) ? "(H) " : "", client_p
->info
);
873 if(IsCapable(target_p
, CAP_ENCAP
) &&
874 !EmptyString(client_p
->serv
->fullcaps
))
875 sendto_one(target_p
, ":%s ENCAP * GCAP :%s",
876 client_p
->id
, client_p
->serv
->fullcaps
);
880 sendto_one(target_p
, ":%s SERVER %s 2 :%s%s",
881 me
.name
, client_p
->name
,
882 IsHidden(client_p
) ? "(H) " : "", client_p
->info
);
884 if(IsCapable(target_p
, CAP_ENCAP
) &&
885 !EmptyString(client_p
->serv
->fullcaps
))
886 sendto_one(target_p
, ":%s ENCAP * GCAP :%s",
887 client_p
->name
, client_p
->serv
->fullcaps
);
892 ** Pass on my client information to the new server
894 ** First, pass only servers (idea is that if the link gets
895 ** cancelled beacause the server was already there,
896 ** there are no NICK's to be cancelled...). Of course,
897 ** if cancellation occurs, all this info is sent anyway,
898 ** and I guess the link dies when a read is attempted...? --msa
900 ** Note: Link cancellation to occur at this point means
901 ** that at least two servers from my fragment are building
902 ** up connection this other fragment at the same time, it's
903 ** a race condition, not the normal way of operation...
905 ** ALSO NOTE: using the get_client_name for server names--
906 ** see previous *WARNING*!!! (Also, original inpath
909 RB_DLINK_FOREACH(ptr
, global_serv_list
.head
)
911 target_p
= ptr
->data
;
913 /* target_p->from == target_p for target_p == client_p */
914 if(IsMe(target_p
) || target_p
->from
== client_p
)
917 /* presumption, if target has an id, so does its uplink */
918 if(has_id(client_p
) && has_id(target_p
))
919 sendto_one(client_p
, ":%s SID %s %d %s :%s%s",
920 target_p
->servptr
->id
, target_p
->name
,
921 target_p
->hopcount
+ 1, target_p
->id
,
922 IsHidden(target_p
) ? "(H) " : "", target_p
->info
);
924 sendto_one(client_p
, ":%s SERVER %s %d :%s%s",
925 target_p
->servptr
->name
,
926 target_p
->name
, target_p
->hopcount
+ 1,
927 IsHidden(target_p
) ? "(H) " : "", target_p
->info
);
929 if(IsCapable(client_p
, CAP_ENCAP
) &&
930 !EmptyString(target_p
->serv
->fullcaps
))
931 sendto_one(client_p
, ":%s ENCAP * GCAP :%s",
932 get_id(target_p
, client_p
),
933 target_p
->serv
->fullcaps
);
936 if(IsCapable(client_p
, CAP_BAN
))
941 /* Always send a PING after connect burst is done */
942 sendto_one(client_p
, "PING :%s", get_id(&me
, client_p
));
944 free_pre_client(client_p
);
946 send_pop_queue(client_p
);
952 * New server connection code
953 * Based upon the stuff floating about in s_bsd.c
958 serv_connect_resolved(struct Client
*client_p
)
960 struct rb_sockaddr_storage myipnum
;
961 char vhoststr
[HOSTIPLEN
];
962 struct server_conf
*server_p
;
965 if((server_p
= client_p
->localClient
->att_sconf
) == NULL
)
967 sendto_realops_snomask(SNO_GENERAL
, is_remote_connect(client_p
) ? L_NETWIDE
: L_ALL
, "Lost connect{} block for %s",
969 exit_client(client_p
, client_p
, &me
, "Lost connect{} block");
974 if(client_p
->localClient
->ip
.ss_family
== AF_INET6
)
975 port
= ntohs(((struct sockaddr_in6
*)&client_p
->localClient
->ip
)->sin6_port
);
978 port
= ntohs(((struct sockaddr_in
*)&client_p
->localClient
->ip
)->sin_port
);
980 if(ServerConfVhosted(server_p
))
982 memcpy(&myipnum
, &server_p
->my_ipnum
, sizeof(myipnum
));
983 ((struct sockaddr_in
*)&myipnum
)->sin_port
= 0;
984 myipnum
.ss_family
= server_p
->aftype
;
987 else if(server_p
->aftype
== AF_INET
&& ServerInfo
.specific_ipv4_vhost
)
989 memcpy(&myipnum
, &ServerInfo
.ip
, sizeof(myipnum
));
990 ((struct sockaddr_in
*)&myipnum
)->sin_port
= 0;
991 myipnum
.ss_family
= AF_INET
;
992 SET_SS_LEN(&myipnum
, sizeof(struct sockaddr_in
));
996 else if((server_p
->aftype
== AF_INET6
) && ServerInfo
.specific_ipv6_vhost
)
998 memcpy(&myipnum
, &ServerInfo
.ip6
, sizeof(myipnum
));
999 ((struct sockaddr_in6
*)&myipnum
)->sin6_port
= 0;
1000 myipnum
.ss_family
= AF_INET6
;
1001 SET_SS_LEN(&myipnum
, sizeof(struct sockaddr_in6
));
1007 ilog(L_SERVER
, "Connecting to %s[%s] port %d (%s)", client_p
->name
, client_p
->sockhost
, port
,
1009 server_p
->aftype
== AF_INET6
? "IPv6" :
1011 (server_p
->aftype
== AF_INET
? "IPv4" : "?"));
1013 if(ServerConfSSL(server_p
))
1015 rb_connect_tcp(client_p
->localClient
->F
, (struct sockaddr
*)&client_p
->localClient
->ip
,
1016 NULL
, 0, serv_connect_ssl_callback
,
1017 client_p
, ConfigFileEntry
.connect_timeout
);
1020 rb_connect_tcp(client_p
->localClient
->F
, (struct sockaddr
*)&client_p
->localClient
->ip
,
1021 NULL
, 0, serv_connect_callback
,
1022 client_p
, ConfigFileEntry
.connect_timeout
);
1027 rb_inet_ntop_sock((struct sockaddr
*)&myipnum
, vhoststr
, sizeof vhoststr
);
1028 ilog(L_SERVER
, "Connecting to %s[%s] port %d (%s) (vhost %s)", client_p
->name
, client_p
->sockhost
, port
,
1030 server_p
->aftype
== AF_INET6
? "IPv6" :
1032 (server_p
->aftype
== AF_INET
? "IPv4" : "?"), vhoststr
);
1035 if(ServerConfSSL(server_p
))
1036 rb_connect_tcp(client_p
->localClient
->F
, (struct sockaddr
*)&client_p
->localClient
->ip
,
1037 (struct sockaddr
*) &myipnum
,
1038 GET_SS_LEN(&myipnum
), serv_connect_ssl_callback
, client_p
,
1039 ConfigFileEntry
.connect_timeout
);
1041 rb_connect_tcp(client_p
->localClient
->F
, (struct sockaddr
*)&client_p
->localClient
->ip
,
1042 (struct sockaddr
*) &myipnum
,
1043 GET_SS_LEN(&myipnum
), serv_connect_callback
, client_p
,
1044 ConfigFileEntry
.connect_timeout
);
1050 serv_connect_dns_callback(void *vptr
, struct DNSReply
*reply
)
1052 struct Client
*client_p
= vptr
;
1055 rb_free(client_p
->localClient
->dnsquery
);
1056 client_p
->localClient
->dnsquery
= NULL
;
1060 sendto_realops_snomask(SNO_GENERAL
, is_remote_connect(client_p
) ? L_NETWIDE
: L_ALL
, "Cannot resolve hostname for %s",
1062 ilog(L_SERVER
, "Cannot resolve hostname for %s",
1063 log_client_name(client_p
, HIDE_IP
));
1064 exit_client(client_p
, client_p
, &me
, "Cannot resolve hostname");
1068 if(reply
->addr
.ss_family
== AF_INET6
)
1069 port
= ((struct sockaddr_in6
*)&client_p
->localClient
->ip
)->sin6_port
;
1072 port
= ((struct sockaddr_in
*)&client_p
->localClient
->ip
)->sin_port
;
1073 memcpy(&client_p
->localClient
->ip
, &reply
->addr
, sizeof(client_p
->localClient
->ip
));
1075 if(reply
->addr
.ss_family
== AF_INET6
)
1076 ((struct sockaddr_in6
*)&client_p
->localClient
->ip
)->sin6_port
= port
;
1079 ((struct sockaddr_in
*)&client_p
->localClient
->ip
)->sin_port
= port
;
1080 /* Set sockhost properly now -- jilles */
1081 rb_inet_ntop_sock((struct sockaddr
*)&client_p
->localClient
->ip
,
1082 client_p
->sockhost
, sizeof client_p
->sockhost
);
1083 serv_connect_resolved(client_p
);
1087 * serv_connect() - initiate a server connection
1089 * inputs - pointer to conf
1090 * - pointer to client doing the connet
1094 * This code initiates a connection to a server. It first checks to make
1095 * sure the given server exists. If this is the case, it creates a socket,
1096 * creates a client, saves the socket information in the client, and
1097 * initiates a connection to the server through rb_connect_tcp(). The
1098 * completion of this goes through serv_completed_connection().
1100 * We return 1 if the connection is attempted, since we don't know whether
1101 * it suceeded or not, and 0 if it fails in here somewhere.
1104 serv_connect(struct server_conf
*server_p
, struct Client
*by
)
1106 struct Client
*client_p
;
1107 struct rb_sockaddr_storage theiripnum
;
1109 char note
[HOSTLEN
+ 10];
1111 s_assert(server_p
!= NULL
);
1112 if(server_p
== NULL
)
1116 * Make sure this server isn't already connected
1118 if((client_p
= find_server(NULL
, server_p
->name
)))
1120 sendto_realops_snomask(SNO_GENERAL
, L_ALL
,
1121 "Server %s already present from %s",
1122 server_p
->name
, client_p
->name
);
1123 if(by
&& IsPerson(by
) && !MyClient(by
))
1124 sendto_one_notice(by
, ":Server %s already present from %s",
1125 server_p
->name
, client_p
->name
);
1129 /* create a socket for the server connection */
1130 if((F
= rb_socket(server_p
->aftype
, SOCK_STREAM
, 0, NULL
)) == NULL
)
1132 ilog_error("opening a stream socket");
1136 rb_snprintf(note
, sizeof note
, "Server: %s", server_p
->name
);
1139 /* Create a local client */
1140 client_p
= make_client(NULL
);
1142 /* Copy in the server, hostname, fd
1143 * The sockhost may be a hostname, this will be corrected later
1146 rb_strlcpy(client_p
->name
, server_p
->name
, sizeof(client_p
->name
));
1147 rb_strlcpy(client_p
->host
, server_p
->host
, sizeof(client_p
->host
));
1148 rb_strlcpy(client_p
->sockhost
, server_p
->host
, sizeof(client_p
->sockhost
));
1149 client_p
->localClient
->F
= F
;
1150 add_to_cli_fd_hash(client_p
);
1153 * Set up the initial server evilness, ripped straight from
1154 * connect_server(), so don't blame me for it being evil.
1158 if(!rb_set_buffers(client_p
->localClient
->F
, READBUF_SIZE
))
1160 ilog_error("setting the buffer size for a server connection");
1164 * Attach config entries to client here rather than in
1165 * serv_connect_callback(). This to avoid null pointer references.
1167 attach_server_conf(client_p
, server_p
);
1170 * at this point we have a connection in progress and C/N lines
1171 * attached to the client, the socket info should be saved in the
1172 * client and it should either be resolved or have a valid address.
1174 * The socket has been connected or connect is in progress.
1176 make_server(client_p
);
1177 if(by
&& IsPerson(by
))
1179 strcpy(client_p
->serv
->by
, by
->name
);
1180 if(client_p
->serv
->user
)
1181 free_user(client_p
->serv
->user
, NULL
);
1182 client_p
->serv
->user
= by
->user
;
1187 strcpy(client_p
->serv
->by
, "AutoConn.");
1188 if(client_p
->serv
->user
)
1189 free_user(client_p
->serv
->user
, NULL
);
1190 client_p
->serv
->user
= NULL
;
1192 SetConnecting(client_p
);
1193 rb_dlinkAddTail(client_p
, &client_p
->node
, &global_client_list
);
1195 if (rb_inet_pton_sock(server_p
->host
, (struct sockaddr
*)&theiripnum
) > 0)
1197 memcpy(&client_p
->localClient
->ip
, &theiripnum
, sizeof(client_p
->localClient
->ip
));
1199 if(theiripnum
.ss_family
== AF_INET6
)
1200 ((struct sockaddr_in6
*)&client_p
->localClient
->ip
)->sin6_port
= htons(server_p
->port
);
1203 ((struct sockaddr_in
*)&client_p
->localClient
->ip
)->sin_port
= htons(server_p
->port
);
1205 return serv_connect_resolved(client_p
);
1210 if(theiripnum
.ss_family
== AF_INET6
)
1211 ((struct sockaddr_in6
*)&client_p
->localClient
->ip
)->sin6_port
= htons(server_p
->port
);
1214 ((struct sockaddr_in
*)&client_p
->localClient
->ip
)->sin_port
= htons(server_p
->port
);
1216 client_p
->localClient
->dnsquery
= rb_malloc(sizeof(struct DNSQuery
));
1217 client_p
->localClient
->dnsquery
->ptr
= client_p
;
1218 client_p
->localClient
->dnsquery
->callback
= serv_connect_dns_callback
;
1219 gethost_byname_type(server_p
->host
, client_p
->localClient
->dnsquery
,
1221 server_p
->aftype
== AF_INET6
? T_AAAA
:
1229 serv_connect_ssl_callback(rb_fde_t
*F
, int status
, void *data
)
1231 struct Client
*client_p
= data
;
1233 rb_connect_sockaddr(F
, (struct sockaddr
*)&client_p
->localClient
->ip
, sizeof(client_p
->localClient
->ip
));
1236 /* Print error message, just like non-SSL. */
1237 serv_connect_callback(F
, status
, data
);
1240 if(rb_socketpair(AF_UNIX
, SOCK_STREAM
, 0, &xF
[0], &xF
[1], "Outgoing ssld connection") == -1)
1242 ilog_error("rb_socketpair failed for server");
1243 serv_connect_callback(F
, RB_ERROR
, data
);
1247 del_from_cli_fd_hash(client_p
);
1248 client_p
->localClient
->F
= xF
[0];
1249 add_to_cli_fd_hash(client_p
);
1251 client_p
->localClient
->ssl_ctl
= start_ssld_connect(F
, xF
[1], rb_get_fd(xF
[0]));
1253 serv_connect_callback(client_p
->localClient
->F
, RB_OK
, client_p
);
1257 * serv_connect_callback() - complete a server connection.
1259 * This routine is called after the server connection attempt has
1260 * completed. If unsucessful, an error is sent to ops and the client
1261 * is closed. If sucessful, it goes through the initialisation/check
1262 * procedures, the capabilities are sent, and the socket is then
1263 * marked for reading.
1266 serv_connect_callback(rb_fde_t
*F
, int status
, void *data
)
1268 struct Client
*client_p
= data
;
1269 struct server_conf
*server_p
;
1272 /* First, make sure its a real client! */
1273 s_assert(client_p
!= NULL
);
1274 s_assert(client_p
->localClient
->F
== F
);
1276 if(client_p
== NULL
)
1279 /* while we were waiting for the callback, its possible this already
1282 if(find_server(NULL
, client_p
->name
) != NULL
)
1284 exit_client(client_p
, client_p
, &me
, "Server Exists");
1288 if(client_p
->localClient
->ssl_ctl
== NULL
)
1289 rb_connect_sockaddr(F
, (struct sockaddr
*)&client_p
->localClient
->ip
, sizeof(client_p
->localClient
->ip
));
1291 /* Check the status */
1294 /* COMM_ERR_TIMEOUT wont have an errno associated with it,
1295 * the others will.. --fl
1297 if(status
== RB_ERR_TIMEOUT
)
1299 sendto_realops_snomask(SNO_GENERAL
, is_remote_connect(client_p
) ? L_NETWIDE
: L_ALL
,
1300 "Error connecting to %s[%s]: %s",
1304 ilog(L_SERVER
, "Error connecting to %s[%s]: %s",
1305 client_p
->name
, client_p
->sockhost
,
1310 errstr
= strerror(rb_get_sockerr(F
));
1311 sendto_realops_snomask(SNO_GENERAL
, is_remote_connect(client_p
) ? L_NETWIDE
: L_ALL
,
1312 "Error connecting to %s[%s]: %s (%s)",
1315 rb_errstr(status
), errstr
);
1316 ilog(L_SERVER
, "Error connecting to %s[%s]: %s (%s)",
1317 client_p
->name
, client_p
->sockhost
,
1318 rb_errstr(status
), errstr
);
1321 exit_client(client_p
, client_p
, &me
, rb_errstr(status
));
1325 /* COMM_OK, so continue the connection procedure */
1326 /* Get the C/N lines */
1327 if((server_p
= client_p
->localClient
->att_sconf
) == NULL
)
1329 sendto_realops_snomask(SNO_GENERAL
, is_remote_connect(client_p
) ? L_NETWIDE
: L_ALL
, "Lost connect{} block for %s",
1331 exit_client(client_p
, client_p
, &me
, "Lost connect{} block");
1335 /* Next, send the initial handshake */
1336 SetHandshake(client_p
);
1338 /* the server may be linking based on certificate fingerprint now. --nenolod */
1339 sendto_one(client_p
, "PASS %s TS %d :%s",
1340 EmptyString(server_p
->spasswd
) ? "*" : server_p
->spasswd
, TS_CURRENT
, me
.id
);
1342 /* pass my info to the new server */
1343 send_capabilities(client_p
, default_server_capabs
1344 | (ServerConfCompressed(server_p
) ? CAP_ZIP_SUPPORTED
: 0)
1345 | (ServerConfTb(server_p
) ? CAP_TB
: 0));
1347 sendto_one(client_p
, "SERVER %s 1 :%s%s",
1349 ConfigServerHide
.hidden
? "(H) " : "", me
.info
);
1352 * If we've been marked dead because a send failed, just exit
1353 * here now and save everyone the trouble of us ever existing.
1355 if(IsAnyDead(client_p
))
1357 sendto_realops_snomask(SNO_GENERAL
, is_remote_connect(client_p
) ? L_NETWIDE
: L_ALL
,
1358 "%s went dead during handshake", client_p
->name
);
1359 exit_client(client_p
, client_p
, &me
, "Went dead during handshake");
1363 /* don't move to serv_list yet -- we haven't sent a burst! */
1365 /* If we get here, we're ok, so lets start reading some data */
1366 read_packet(F
, client_p
);