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... */
57 #include "capability.h"
60 #define INADDR_NONE ((unsigned int) 0xffffffff)
63 int MaxConnectionCount
= 1;
64 int MaxClientCount
= 1;
65 int refresh_user_links
= 0;
67 static char buf
[BUFSIZE
];
70 * list of recognized server capabilities. "TS" is not on the list
71 * because all servers that we talk to already do TS, and the kludged
72 * extra argument to "PASS" takes care of checking that. -orabidoo
74 struct CapabilityIndex
*serv_capindex
= NULL
;
83 unsigned int CAP_KNOCK
;
85 unsigned int CAP_UNKLN
;
86 unsigned int CAP_CLUSTER
;
87 unsigned int CAP_ENCAP
;
89 unsigned int CAP_SERVICE
;
90 unsigned int CAP_RSFNC
;
91 unsigned int CAP_SAVE
;
92 unsigned int CAP_EUID
;
93 unsigned int CAP_EOPMOD
;
95 unsigned int CAP_MLOCK
;
98 * initialize our builtin capability table. --nenolod
101 init_builtin_capabs(void)
103 serv_capindex
= capability_index_create("server capabilities");
105 /* These two are not set via CAPAB/GCAP keywords. */
106 CAP_CAP
= capability_put_anonymous(serv_capindex
);
107 CAP_TS6
= capability_put_anonymous(serv_capindex
);
109 CAP_QS
= capability_put(serv_capindex
, "QS");
110 CAP_EX
= capability_put(serv_capindex
, "EX");
111 CAP_CHW
= capability_put(serv_capindex
, "CHW");
112 CAP_IE
= capability_put(serv_capindex
, "IE");
113 CAP_KLN
= capability_put(serv_capindex
, "KLN");
114 CAP_KNOCK
= capability_put(serv_capindex
, "KNOCK");
115 CAP_ZIP
= capability_put(serv_capindex
, "ZIP");
116 CAP_TB
= capability_put(serv_capindex
, "TB");
117 CAP_UNKLN
= capability_put(serv_capindex
, "UNKLN");
118 CAP_CLUSTER
= capability_put(serv_capindex
, "CLUSTER");
119 CAP_ENCAP
= capability_put(serv_capindex
, "ENCAP");
120 CAP_SERVICE
= capability_put(serv_capindex
, "SERVICES");
121 CAP_RSFNC
= capability_put(serv_capindex
, "RSFNC");
122 CAP_SAVE
= capability_put(serv_capindex
, "SAVE");
123 CAP_EUID
= capability_put(serv_capindex
, "EUID");
124 CAP_EOPMOD
= capability_put(serv_capindex
, "EOPMOD");
125 CAP_BAN
= capability_put(serv_capindex
, "BAN");
126 CAP_MLOCK
= capability_put(serv_capindex
, "MLOCK");
128 capability_require(serv_capindex
, "QS");
129 capability_require(serv_capindex
, "ENCAP");
132 static CNCB serv_connect_callback
;
133 static CNCB serv_connect_ssl_callback
;
136 * hunt_server - Do the basic thing in delivering the message (command)
137 * across the relays to the specific server (server) for
140 * Note: The command is a format string and *MUST* be
141 * of prefixed style (e.g. ":%s COMMAND %s ...").
142 * Command can have only max 8 parameters.
144 * server parv[server] is the parameter identifying the
148 * parv[server] is replaced with the pointer to the
149 * real servername from the matched client (I'm lazy
152 * returns: (see #defines)
155 hunt_server(struct Client
*client_p
, struct Client
*source_p
,
156 const char *command
, int server
, int parc
, const char *parv
[])
158 struct Client
*target_p
;
165 * Assume it's me, if no server
167 if(parc
<= server
|| EmptyString(parv
[server
]) ||
168 match(parv
[server
], me
.name
) || (strcmp(parv
[server
], me
.id
) == 0))
169 return (HUNTED_ISME
);
171 new = LOCAL_COPY(parv
[server
]);
174 * These are to pickup matches that would cause the following
175 * message to go in the wrong direction while doing quick fast
176 * non-matching lookups.
178 if(MyClient(source_p
))
179 target_p
= find_named_client(new);
181 target_p
= find_client(new);
184 if(target_p
->from
== source_p
->from
&& !MyConnect(target_p
))
188 wilds
= (strchr(new, '?') || strchr(new, '*'));
191 * Again, if there are no wild cards involved in the server
192 * name, use the hash lookup
194 if(!target_p
&& wilds
)
196 RB_DLINK_FOREACH(ptr
, global_serv_list
.head
)
198 if(match(new, ((struct Client
*) (ptr
->data
))->name
))
200 target_p
= ptr
->data
;
206 if(target_p
&& !IsRegistered(target_p
))
211 if(IsMe(target_p
) || MyClient(target_p
))
215 parv
[server
] = get_id(target_p
, target_p
);
217 sendto_one(target_p
, command
, get_id(source_p
, target_p
),
218 parv
[1], parv
[2], parv
[3], parv
[4], parv
[5], parv
[6], parv
[7], parv
[8]);
220 return (HUNTED_PASS
);
223 if(MyClient(source_p
) || !IsDigit(parv
[server
][0]))
224 sendto_one_numeric(source_p
, ERR_NOSUCHSERVER
,
225 form_str(ERR_NOSUCHSERVER
), parv
[server
]);
226 return (HUNTED_NOSUCH
);
230 * try_connections - scan through configuration and try new connections.
231 * Returns the calendar time when the next call to this
232 * function should be made latest. (No harm done if this
233 * is called earlier or later...)
236 try_connections(void *unused
)
238 struct Client
*client_p
;
239 struct server_conf
*server_p
= NULL
;
240 struct server_conf
*tmp_p
;
243 int connecting
= FALSE
;
247 RB_DLINK_FOREACH(ptr
, server_conf_list
.head
)
251 if(ServerConfIllegal(tmp_p
) || !ServerConfAutoconn(tmp_p
))
254 /* don't allow ssl connections if ssl isn't setup */
255 if(ServerConfSSL(tmp_p
) && (!ssl_ok
|| !get_ssld_count()))
258 cltmp
= tmp_p
->class;
261 * Skip this entry if the use of it is still on hold until
262 * future. Otherwise handle this entry (and set it on hold
263 * until next time). Will reset only hold times, if already
264 * made one successfull connection... [this algorithm is
265 * a bit fuzzy... -- msa >;) ]
267 if(tmp_p
->hold
> rb_current_time())
269 if(next
> tmp_p
->hold
|| next
== 0)
274 confrq
= get_con_freq(cltmp
);
275 tmp_p
->hold
= rb_current_time() + confrq
;
278 * Found a CONNECT config with port specified, scan clients
279 * and see if this server is already connected?
281 client_p
= find_server(NULL
, tmp_p
->name
);
283 if(!client_p
&& (CurrUsers(cltmp
) < MaxUsers(cltmp
)) && !connecting
)
287 /* We connect only one at time... */
291 if((next
> tmp_p
->hold
) || (next
== 0))
295 /* TODO: change this to set active flag to 0 when added to event! --Habeeb */
296 if(GlobalSetOptions
.autoconn
== 0)
302 /* move this connect entry to end.. */
303 rb_dlinkDelete(&server_p
->node
, &server_conf_list
);
304 rb_dlinkAddTail(server_p
, &server_p
->node
, &server_conf_list
);
307 * We used to only print this if serv_connect() actually
308 * suceeded, but since rb_tcp_connect() can call the callback
309 * immediately if there is an error, we were getting error messages
310 * in the wrong order. SO, we just print out the activated line,
311 * and let serv_connect() / serv_connect_callback() print an
312 * error afterwards if it fails.
315 sendto_realops_snomask(SNO_GENERAL
, L_ALL
,
316 "Connection to %s activated",
319 serv_connect(server_p
, 0);
323 check_server(const char *name
, struct Client
*client_p
)
325 struct server_conf
*server_p
= NULL
;
326 struct server_conf
*tmp_p
;
331 s_assert(NULL
!= client_p
);
335 if(!(client_p
->localClient
->passwd
))
338 if(strlen(name
) > HOSTLEN
)
341 RB_DLINK_FOREACH(ptr
, server_conf_list
.head
)
345 if(ServerConfIllegal(tmp_p
))
348 if(!match(tmp_p
->name
, name
))
353 /* XXX: Fix me for IPv6 */
354 /* XXX sockhost is the IPv4 ip as a string */
355 if(match(tmp_p
->host
, client_p
->host
) ||
356 match(tmp_p
->host
, client_p
->sockhost
))
362 if(ServerConfEncrypted(tmp_p
))
364 encr
= rb_crypt(client_p
->localClient
->passwd
,
366 if(encr
!= NULL
&& !strcmp(tmp_p
->passwd
, encr
))
374 else if(strcmp(tmp_p
->passwd
, client_p
->localClient
->passwd
))
380 if(!client_p
->certfp
|| strcasecmp(tmp_p
->certfp
, client_p
->certfp
) != 0)
392 if(ServerConfSSL(server_p
) && client_p
->localClient
->ssl_ctl
== NULL
)
397 attach_server_conf(client_p
, server_p
);
399 /* clear ZIP/TB if they support but we dont want them */
401 if(!ServerConfCompressed(server_p
))
403 ClearCap(client_p
, CAP_ZIP
);
405 if(!ServerConfTb(server_p
))
406 ClearCap(client_p
, CAP_TB
);
414 * inputs - Client pointer to send to
415 * - int flag of capabilities that this server has
417 * side effects - send the CAPAB line to a server -orabidoo
421 send_capabilities(struct Client
*client_p
, unsigned int cap_can_send
)
423 sendto_one(client_p
, "CAPAB :%s", capability_index_list(serv_capindex
, cap_can_send
));
427 burst_ban(struct Client
*client_p
)
430 struct ConfItem
*aconf
;
431 const char *type
, *oper
;
432 /* +5 for !,@,{,} and null */
433 char operbuf
[NICKLEN
+ USERLEN
+ HOSTLEN
+ HOSTLEN
+ 5];
437 melen
= strlen(me
.name
);
438 RB_DLINK_FOREACH(ptr
, prop_bans
.head
)
442 /* Skip expired stuff. */
443 if(aconf
->lifetime
< rb_current_time())
445 switch(aconf
->status
& ~CONF_ILLEGAL
)
447 case CONF_KILL
: type
= "K"; break;
448 case CONF_DLINE
: type
= "D"; break;
449 case CONF_XLINE
: type
= "X"; break;
450 case CONF_RESV_NICK
: type
= "R"; break;
451 case CONF_RESV_CHANNEL
: type
= "R"; break;
455 oper
= aconf
->info
.oper
;
456 if(aconf
->flags
& CONF_FLAGS_MYOPER
)
458 /* Our operator{} names may not be meaningful
459 * to other servers, so rewrite to our server
462 rb_strlcpy(operbuf
, aconf
->info
.oper
, sizeof buf
);
463 p
= strrchr(operbuf
, '{');
465 operbuf
+ sizeof operbuf
- p
> (ptrdiff_t)(melen
+ 2))
467 memcpy(p
+ 1, me
.name
, melen
);
473 sendto_one(client_p
, ":%s BAN %s %s %s %lu %d %d %s :%s%s%s",
476 aconf
->user
? aconf
->user
: "*", aconf
->host
,
477 (unsigned long)aconf
->created
,
478 (int)(aconf
->hold
- aconf
->created
),
479 (int)(aconf
->lifetime
- aconf
->created
),
482 aconf
->spasswd
? "|" : "",
483 aconf
->spasswd
? aconf
->spasswd
: "");
489 * input - client to burst to, channel name, list to burst, mode flag
491 * side effects - client is sent a list of +b, +e, or +I modes
494 burst_modes_TS6(struct Client
*client_p
, struct Channel
*chptr
,
495 rb_dlink_list
*list
, char flag
)
504 cur_len
= mlen
= rb_sprintf(buf
, ":%s BMASK %ld %s %c :",
505 me
.id
, (long) chptr
->channelts
, chptr
->chname
, flag
);
508 RB_DLINK_FOREACH(ptr
, list
->head
)
512 tlen
= strlen(banptr
->banstr
) + (banptr
->forward
? strlen(banptr
->forward
) + 1 : 0) + 1;
515 if(cur_len
+ tlen
> BUFSIZE
- 3)
517 /* the one we're trying to send doesnt fit at all! */
524 /* chop off trailing space and send.. */
526 sendto_one(client_p
, "%s", buf
);
532 rb_sprintf(t
, "%s$%s ", banptr
->banstr
, banptr
->forward
);
534 rb_sprintf(t
, "%s ", banptr
->banstr
);
539 /* cant ever exit the loop above without having modified buf,
540 * chop off trailing space and send.
543 sendto_one(client_p
, "%s", buf
);
549 * inputs - client (server) to send nick towards
550 * - client to send nick for
552 * side effects - NICK message is sent towards given client_p
555 burst_TS6(struct Client
*client_p
)
557 static char ubuf
[12];
558 struct Client
*target_p
;
559 struct Channel
*chptr
;
560 struct membership
*msptr
;
561 hook_data_client hclientinfo
;
562 hook_data_channel hchaninfo
;
569 hclientinfo
.client
= hchaninfo
.client
= client_p
;
571 RB_DLINK_FOREACH(ptr
, global_client_list
.head
)
573 target_p
= ptr
->data
;
575 if(!IsPerson(target_p
))
578 send_umode(NULL
, target_p
, 0, 0, ubuf
);
585 if(IsCapable(client_p
, CAP_EUID
))
586 sendto_one(client_p
, ":%s EUID %s %d %ld %s %s %s %s %s %s %s :%s",
587 target_p
->servptr
->id
, target_p
->name
,
588 target_p
->hopcount
+ 1,
589 (long) target_p
->tsinfo
, ubuf
,
590 target_p
->username
, target_p
->host
,
591 IsIPSpoof(target_p
) ? "0" : target_p
->sockhost
,
593 IsDynSpoof(target_p
) ? target_p
->orighost
: "*",
594 EmptyString(target_p
->user
->suser
) ? "*" : target_p
->user
->suser
,
597 sendto_one(client_p
, ":%s UID %s %d %ld %s %s %s %s %s :%s",
598 target_p
->servptr
->id
, target_p
->name
,
599 target_p
->hopcount
+ 1,
600 (long) target_p
->tsinfo
, ubuf
,
601 target_p
->username
, target_p
->host
,
602 IsIPSpoof(target_p
) ? "0" : target_p
->sockhost
,
603 target_p
->id
, target_p
->info
);
605 if(!EmptyString(target_p
->certfp
))
606 sendto_one(client_p
, ":%s ENCAP * CERTFP :%s",
607 use_id(target_p
), target_p
->certfp
);
609 if(!IsCapable(client_p
, CAP_EUID
))
611 if(IsDynSpoof(target_p
))
612 sendto_one(client_p
, ":%s ENCAP * REALHOST %s",
613 use_id(target_p
), target_p
->orighost
);
614 if(!EmptyString(target_p
->user
->suser
))
615 sendto_one(client_p
, ":%s ENCAP * LOGIN %s",
616 use_id(target_p
), target_p
->user
->suser
);
619 if(ConfigFileEntry
.burst_away
&& !EmptyString(target_p
->user
->away
))
620 sendto_one(client_p
, ":%s AWAY :%s",
622 target_p
->user
->away
);
624 hclientinfo
.target
= target_p
;
625 call_hook(h_burst_client
, &hclientinfo
);
628 RB_DLINK_FOREACH(ptr
, global_channel_list
.head
)
632 if(*chptr
->chname
!= '#')
635 cur_len
= mlen
= rb_sprintf(buf
, ":%s SJOIN %ld %s %s :", me
.id
,
636 (long) chptr
->channelts
, chptr
->chname
,
637 channel_modes(chptr
, client_p
));
641 RB_DLINK_FOREACH(uptr
, chptr
->members
.head
)
645 tlen
= strlen(use_id(msptr
->client_p
)) + 1;
651 if(cur_len
+ tlen
>= BUFSIZE
- 3)
654 sendto_one(client_p
, "%s", buf
);
659 rb_sprintf(t
, "%s%s ", find_channel_status(msptr
, 1),
660 use_id(msptr
->client_p
));
666 if (rb_dlink_list_length(&chptr
->members
) > 0)
668 /* remove trailing space */
671 sendto_one(client_p
, "%s", buf
);
673 if(rb_dlink_list_length(&chptr
->banlist
) > 0)
674 burst_modes_TS6(client_p
, chptr
, &chptr
->banlist
, 'b');
676 if(IsCapable(client_p
, CAP_EX
) &&
677 rb_dlink_list_length(&chptr
->exceptlist
) > 0)
678 burst_modes_TS6(client_p
, chptr
, &chptr
->exceptlist
, 'e');
680 if(IsCapable(client_p
, CAP_IE
) &&
681 rb_dlink_list_length(&chptr
->invexlist
) > 0)
682 burst_modes_TS6(client_p
, chptr
, &chptr
->invexlist
, 'I');
684 if(rb_dlink_list_length(&chptr
->quietlist
) > 0)
685 burst_modes_TS6(client_p
, chptr
, &chptr
->quietlist
, 'q');
687 if(IsCapable(client_p
, CAP_TB
) && chptr
->topic
!= NULL
)
688 sendto_one(client_p
, ":%s TB %s %ld %s%s:%s",
689 me
.id
, chptr
->chname
, (long) chptr
->topic_time
,
690 ConfigChannel
.burst_topicwho
? chptr
->topic_info
: "",
691 ConfigChannel
.burst_topicwho
? " " : "",
694 if(IsCapable(client_p
, CAP_MLOCK
))
695 sendto_one(client_p
, ":%s MLOCK %ld %s :%s",
696 me
.id
, (long) chptr
->channelts
, chptr
->chname
,
697 EmptyString(chptr
->mode_lock
) ? "" : chptr
->mode_lock
);
699 hchaninfo
.chptr
= chptr
;
700 call_hook(h_burst_channel
, &hchaninfo
);
703 hclientinfo
.target
= NULL
;
704 call_hook(h_burst_finished
, &hclientinfo
);
708 * show_capabilities - show current server capabilities
710 * inputs - pointer to an struct Client
711 * output - pointer to static string
712 * side effects - build up string representing capabilities of server listed
715 show_capabilities(struct Client
*target_p
)
717 static char msgbuf
[BUFSIZE
];
722 rb_strlcpy(msgbuf
, " TS6", sizeof(msgbuf
));
725 rb_strlcat(msgbuf
, " SSL", sizeof(msgbuf
));
727 if(!IsServer(target_p
) || !target_p
->serv
->caps
) /* short circuit if no caps */
730 rb_strlcat(msgbuf
, " ", sizeof(msgbuf
));
731 rb_strlcat(msgbuf
, capability_index_list(serv_capindex
, target_p
->serv
->caps
), sizeof(msgbuf
));
739 * inputs - pointer to a struct Client
744 server_estab(struct Client
*client_p
)
746 struct Client
*target_p
;
747 struct server_conf
*server_p
;
748 hook_data_client hdata
;
751 char note
[HOSTLEN
+ 15];
753 s_assert(NULL
!= client_p
);
757 host
= client_p
->name
;
759 if((server_p
= client_p
->localClient
->att_sconf
) == NULL
)
761 /* This shouldn't happen, better tell the ops... -A1kmm */
762 sendto_realops_snomask(SNO_GENERAL
, is_remote_connect(client_p
) ? L_NETWIDE
: L_ALL
,
763 "Warning: Lost connect{} block for server %s!", host
);
764 return exit_client(client_p
, client_p
, client_p
, "Lost connect{} block!");
767 /* We shouldn't have to check this, it should already done before
768 * server_estab is called. -A1kmm
770 if(client_p
->localClient
->passwd
)
772 memset(client_p
->localClient
->passwd
, 0, strlen(client_p
->localClient
->passwd
));
773 rb_free(client_p
->localClient
->passwd
);
774 client_p
->localClient
->passwd
= NULL
;
777 /* Its got identd , since its a server */
780 /* If there is something in the serv_list, it might be this
781 * connecting server..
783 if(!ServerInfo
.hub
&& serv_list
.head
)
785 if(client_p
!= serv_list
.head
->data
|| serv_list
.head
->next
)
787 ServerStats
.is_ref
++;
788 sendto_one(client_p
, "ERROR :I'm a leaf not a hub");
789 return exit_client(client_p
, client_p
, client_p
, "I'm a leaf");
793 if(IsUnknown(client_p
))
795 /* the server may be linking based on certificate fingerprint now. --nenolod */
796 sendto_one(client_p
, "PASS %s TS %d :%s",
797 EmptyString(server_p
->spasswd
) ? "*" : server_p
->spasswd
, TS_CURRENT
, me
.id
);
799 /* pass info to new server */
800 send_capabilities(client_p
, default_server_capabs
801 | (ServerConfCompressed(server_p
) ? CAP_ZIP_SUPPORTED
: 0)
802 | (ServerConfTb(server_p
) ? CAP_TB
: 0));
804 sendto_one(client_p
, "SERVER %s 1 :%s%s",
806 ConfigServerHide
.hidden
? "(H) " : "",
807 (me
.info
[0]) ? (me
.info
) : "IRCers United");
810 if(!rb_set_buffers(client_p
->localClient
->F
, READBUF_SIZE
))
811 ilog_error("rb_set_buffers failed for server");
813 /* Enable compression now */
814 if(IsCapable(client_p
, CAP_ZIP
))
816 start_zlib_session(client_p
);
818 sendto_one(client_p
, "SVINFO %d %d 0 :%ld", TS_CURRENT
, TS_MIN
, (long int)rb_current_time());
820 client_p
->servptr
= &me
;
822 if(IsAnyDead(client_p
))
823 return CLIENT_EXITED
;
827 rb_dlinkAdd(client_p
, &client_p
->lnode
, &me
.serv
->servers
);
828 rb_dlinkMoveNode(&client_p
->localClient
->tnode
, &unknown_list
, &serv_list
);
829 rb_dlinkAddTailAlloc(client_p
, &global_serv_list
);
832 add_to_id_hash(client_p
->id
, client_p
);
834 add_to_client_hash(client_p
->name
, client_p
);
835 /* doesnt duplicate client_p->serv if allocated this struct already */
836 make_server(client_p
);
838 client_p
->serv
->caps
= client_p
->localClient
->caps
;
840 if(client_p
->localClient
->fullcaps
)
842 client_p
->serv
->fullcaps
= rb_strdup(client_p
->localClient
->fullcaps
);
843 rb_free(client_p
->localClient
->fullcaps
);
844 client_p
->localClient
->fullcaps
= NULL
;
847 client_p
->serv
->nameinfo
= scache_connect(client_p
->name
, client_p
->info
, IsHidden(client_p
));
848 client_p
->localClient
->firsttime
= rb_current_time();
849 /* fixing eob timings.. -gnp */
851 if((rb_dlink_list_length(&lclient_list
) + rb_dlink_list_length(&serv_list
)) >
852 (unsigned long)MaxConnectionCount
)
853 MaxConnectionCount
= rb_dlink_list_length(&lclient_list
) +
854 rb_dlink_list_length(&serv_list
);
856 /* Show the real host/IP to admins */
857 sendto_realops_snomask(SNO_GENERAL
, L_ALL
,
858 "Link with %s established: (%s) link",
860 show_capabilities(client_p
));
862 ilog(L_SERVER
, "Link with %s established: (%s) link",
863 log_client_name(client_p
, SHOW_IP
), show_capabilities(client_p
));
866 hdata
.target
= client_p
;
867 call_hook(h_server_introduced
, &hdata
);
869 rb_snprintf(note
, sizeof(note
), "Server: %s", client_p
->name
);
870 rb_note(client_p
->localClient
->F
, note
);
873 ** Old sendto_serv_but_one() call removed because we now
874 ** need to send different names to different servers
875 ** (domain name matching) Send new server to other servers.
877 RB_DLINK_FOREACH(ptr
, serv_list
.head
)
879 target_p
= ptr
->data
;
881 if(target_p
== client_p
)
884 if(has_id(target_p
) && has_id(client_p
))
886 sendto_one(target_p
, ":%s SID %s 2 %s :%s%s",
887 me
.id
, client_p
->name
, client_p
->id
,
888 IsHidden(client_p
) ? "(H) " : "", client_p
->info
);
890 if(!EmptyString(client_p
->serv
->fullcaps
))
891 sendto_one(target_p
, ":%s ENCAP * GCAP :%s",
892 client_p
->id
, client_p
->serv
->fullcaps
);
896 sendto_one(target_p
, ":%s SERVER %s 2 :%s%s",
897 me
.name
, client_p
->name
,
898 IsHidden(client_p
) ? "(H) " : "", client_p
->info
);
900 if(!EmptyString(client_p
->serv
->fullcaps
))
901 sendto_one(target_p
, ":%s ENCAP * GCAP :%s",
902 client_p
->name
, client_p
->serv
->fullcaps
);
907 ** Pass on my client information to the new server
909 ** First, pass only servers (idea is that if the link gets
910 ** cancelled beacause the server was already there,
911 ** there are no NICK's to be cancelled...). Of course,
912 ** if cancellation occurs, all this info is sent anyway,
913 ** and I guess the link dies when a read is attempted...? --msa
915 ** Note: Link cancellation to occur at this point means
916 ** that at least two servers from my fragment are building
917 ** up connection this other fragment at the same time, it's
918 ** a race condition, not the normal way of operation...
920 ** ALSO NOTE: using the get_client_name for server names--
921 ** see previous *WARNING*!!! (Also, original inpath
924 RB_DLINK_FOREACH(ptr
, global_serv_list
.head
)
926 target_p
= ptr
->data
;
928 /* target_p->from == target_p for target_p == client_p */
929 if(IsMe(target_p
) || target_p
->from
== client_p
)
932 /* presumption, if target has an id, so does its uplink */
933 if(has_id(client_p
) && has_id(target_p
))
934 sendto_one(client_p
, ":%s SID %s %d %s :%s%s",
935 target_p
->servptr
->id
, target_p
->name
,
936 target_p
->hopcount
+ 1, target_p
->id
,
937 IsHidden(target_p
) ? "(H) " : "", target_p
->info
);
939 sendto_one(client_p
, ":%s SERVER %s %d :%s%s",
940 target_p
->servptr
->name
,
941 target_p
->name
, target_p
->hopcount
+ 1,
942 IsHidden(target_p
) ? "(H) " : "", target_p
->info
);
944 if(!EmptyString(target_p
->serv
->fullcaps
))
945 sendto_one(client_p
, ":%s ENCAP * GCAP :%s",
946 get_id(target_p
, client_p
),
947 target_p
->serv
->fullcaps
);
950 if(IsCapable(client_p
, CAP_BAN
))
955 /* Always send a PING after connect burst is done */
956 sendto_one(client_p
, "PING :%s", get_id(&me
, client_p
));
958 free_pre_client(client_p
);
960 send_pop_queue(client_p
);
966 * New server connection code
967 * Based upon the stuff floating about in s_bsd.c
972 serv_connect_resolved(struct Client
*client_p
)
974 struct rb_sockaddr_storage myipnum
;
975 char vhoststr
[HOSTIPLEN
];
976 struct server_conf
*server_p
;
979 if((server_p
= client_p
->localClient
->att_sconf
) == NULL
)
981 sendto_realops_snomask(SNO_GENERAL
, is_remote_connect(client_p
) ? L_NETWIDE
: L_ALL
, "Lost connect{} block for %s",
983 exit_client(client_p
, client_p
, &me
, "Lost connect{} block");
988 if(client_p
->localClient
->ip
.ss_family
== AF_INET6
)
989 port
= ntohs(((struct sockaddr_in6
*)&client_p
->localClient
->ip
)->sin6_port
);
992 port
= ntohs(((struct sockaddr_in
*)&client_p
->localClient
->ip
)->sin_port
);
994 if(ServerConfVhosted(server_p
))
996 memcpy(&myipnum
, &server_p
->my_ipnum
, sizeof(myipnum
));
997 ((struct sockaddr_in
*)&myipnum
)->sin_port
= 0;
998 myipnum
.ss_family
= server_p
->aftype
;
1001 else if(server_p
->aftype
== AF_INET
&& ServerInfo
.specific_ipv4_vhost
)
1003 memcpy(&myipnum
, &ServerInfo
.ip
, sizeof(myipnum
));
1004 ((struct sockaddr_in
*)&myipnum
)->sin_port
= 0;
1005 myipnum
.ss_family
= AF_INET
;
1006 SET_SS_LEN(&myipnum
, sizeof(struct sockaddr_in
));
1010 else if((server_p
->aftype
== AF_INET6
) && ServerInfo
.specific_ipv6_vhost
)
1012 memcpy(&myipnum
, &ServerInfo
.ip6
, sizeof(myipnum
));
1013 ((struct sockaddr_in6
*)&myipnum
)->sin6_port
= 0;
1014 myipnum
.ss_family
= AF_INET6
;
1015 SET_SS_LEN(&myipnum
, sizeof(struct sockaddr_in6
));
1021 ilog(L_SERVER
, "Connecting to %s[%s] port %d (%s)", client_p
->name
, client_p
->sockhost
, port
,
1023 server_p
->aftype
== AF_INET6
? "IPv6" :
1025 (server_p
->aftype
== AF_INET
? "IPv4" : "?"));
1027 if(ServerConfSSL(server_p
))
1029 rb_connect_tcp(client_p
->localClient
->F
, (struct sockaddr
*)&client_p
->localClient
->ip
,
1030 NULL
, 0, serv_connect_ssl_callback
,
1031 client_p
, ConfigFileEntry
.connect_timeout
);
1034 rb_connect_tcp(client_p
->localClient
->F
, (struct sockaddr
*)&client_p
->localClient
->ip
,
1035 NULL
, 0, serv_connect_callback
,
1036 client_p
, ConfigFileEntry
.connect_timeout
);
1041 rb_inet_ntop_sock((struct sockaddr
*)&myipnum
, vhoststr
, sizeof vhoststr
);
1042 ilog(L_SERVER
, "Connecting to %s[%s] port %d (%s) (vhost %s)", client_p
->name
, client_p
->sockhost
, port
,
1044 server_p
->aftype
== AF_INET6
? "IPv6" :
1046 (server_p
->aftype
== AF_INET
? "IPv4" : "?"), vhoststr
);
1049 if(ServerConfSSL(server_p
))
1050 rb_connect_tcp(client_p
->localClient
->F
, (struct sockaddr
*)&client_p
->localClient
->ip
,
1051 (struct sockaddr
*) &myipnum
,
1052 GET_SS_LEN(&myipnum
), serv_connect_ssl_callback
, client_p
,
1053 ConfigFileEntry
.connect_timeout
);
1055 rb_connect_tcp(client_p
->localClient
->F
, (struct sockaddr
*)&client_p
->localClient
->ip
,
1056 (struct sockaddr
*) &myipnum
,
1057 GET_SS_LEN(&myipnum
), serv_connect_callback
, client_p
,
1058 ConfigFileEntry
.connect_timeout
);
1064 serv_connect_dns_callback(void *vptr
, struct DNSReply
*reply
)
1066 struct Client
*client_p
= vptr
;
1069 rb_free(client_p
->localClient
->dnsquery
);
1070 client_p
->localClient
->dnsquery
= NULL
;
1074 sendto_realops_snomask(SNO_GENERAL
, is_remote_connect(client_p
) ? L_NETWIDE
: L_ALL
, "Cannot resolve hostname for %s",
1076 ilog(L_SERVER
, "Cannot resolve hostname for %s",
1077 log_client_name(client_p
, HIDE_IP
));
1078 exit_client(client_p
, client_p
, &me
, "Cannot resolve hostname");
1082 if(reply
->addr
.ss_family
== AF_INET6
)
1083 port
= ((struct sockaddr_in6
*)&client_p
->localClient
->ip
)->sin6_port
;
1086 port
= ((struct sockaddr_in
*)&client_p
->localClient
->ip
)->sin_port
;
1087 memcpy(&client_p
->localClient
->ip
, &reply
->addr
, sizeof(client_p
->localClient
->ip
));
1089 if(reply
->addr
.ss_family
== AF_INET6
)
1090 ((struct sockaddr_in6
*)&client_p
->localClient
->ip
)->sin6_port
= port
;
1093 ((struct sockaddr_in
*)&client_p
->localClient
->ip
)->sin_port
= port
;
1094 /* Set sockhost properly now -- jilles */
1095 rb_inet_ntop_sock((struct sockaddr
*)&client_p
->localClient
->ip
,
1096 client_p
->sockhost
, sizeof client_p
->sockhost
);
1097 serv_connect_resolved(client_p
);
1101 * serv_connect() - initiate a server connection
1103 * inputs - pointer to conf
1104 * - pointer to client doing the connet
1108 * This code initiates a connection to a server. It first checks to make
1109 * sure the given server exists. If this is the case, it creates a socket,
1110 * creates a client, saves the socket information in the client, and
1111 * initiates a connection to the server through rb_connect_tcp(). The
1112 * completion of this goes through serv_completed_connection().
1114 * We return 1 if the connection is attempted, since we don't know whether
1115 * it suceeded or not, and 0 if it fails in here somewhere.
1118 serv_connect(struct server_conf
*server_p
, struct Client
*by
)
1120 struct Client
*client_p
;
1121 struct rb_sockaddr_storage theiripnum
;
1123 char note
[HOSTLEN
+ 10];
1125 s_assert(server_p
!= NULL
);
1126 if(server_p
== NULL
)
1130 * Make sure this server isn't already connected
1132 if((client_p
= find_server(NULL
, server_p
->name
)))
1134 sendto_realops_snomask(SNO_GENERAL
, L_ALL
,
1135 "Server %s already present from %s",
1136 server_p
->name
, client_p
->name
);
1137 if(by
&& IsPerson(by
) && !MyClient(by
))
1138 sendto_one_notice(by
, ":Server %s already present from %s",
1139 server_p
->name
, client_p
->name
);
1143 /* create a socket for the server connection */
1144 if((F
= rb_socket(server_p
->aftype
, SOCK_STREAM
, 0, NULL
)) == NULL
)
1146 ilog_error("opening a stream socket");
1150 rb_snprintf(note
, sizeof note
, "Server: %s", server_p
->name
);
1153 /* Create a local client */
1154 client_p
= make_client(NULL
);
1156 /* Copy in the server, hostname, fd
1157 * The sockhost may be a hostname, this will be corrected later
1160 rb_strlcpy(client_p
->name
, server_p
->name
, sizeof(client_p
->name
));
1161 rb_strlcpy(client_p
->host
, server_p
->host
, sizeof(client_p
->host
));
1162 rb_strlcpy(client_p
->sockhost
, server_p
->host
, sizeof(client_p
->sockhost
));
1163 client_p
->localClient
->F
= F
;
1164 add_to_cli_fd_hash(client_p
);
1167 * Set up the initial server evilness, ripped straight from
1168 * connect_server(), so don't blame me for it being evil.
1172 if(!rb_set_buffers(client_p
->localClient
->F
, READBUF_SIZE
))
1174 ilog_error("setting the buffer size for a server connection");
1178 * Attach config entries to client here rather than in
1179 * serv_connect_callback(). This to avoid null pointer references.
1181 attach_server_conf(client_p
, server_p
);
1184 * at this point we have a connection in progress and C/N lines
1185 * attached to the client, the socket info should be saved in the
1186 * client and it should either be resolved or have a valid address.
1188 * The socket has been connected or connect is in progress.
1190 make_server(client_p
);
1191 if(by
&& IsPerson(by
))
1193 strcpy(client_p
->serv
->by
, by
->name
);
1194 if(client_p
->serv
->user
)
1195 free_user(client_p
->serv
->user
, NULL
);
1196 client_p
->serv
->user
= by
->user
;
1201 strcpy(client_p
->serv
->by
, "AutoConn.");
1202 if(client_p
->serv
->user
)
1203 free_user(client_p
->serv
->user
, NULL
);
1204 client_p
->serv
->user
= NULL
;
1206 SetConnecting(client_p
);
1207 rb_dlinkAddTail(client_p
, &client_p
->node
, &global_client_list
);
1209 if (rb_inet_pton_sock(server_p
->host
, (struct sockaddr
*)&theiripnum
) > 0)
1211 memcpy(&client_p
->localClient
->ip
, &theiripnum
, sizeof(client_p
->localClient
->ip
));
1213 if(theiripnum
.ss_family
== AF_INET6
)
1214 ((struct sockaddr_in6
*)&client_p
->localClient
->ip
)->sin6_port
= htons(server_p
->port
);
1217 ((struct sockaddr_in
*)&client_p
->localClient
->ip
)->sin_port
= htons(server_p
->port
);
1219 return serv_connect_resolved(client_p
);
1224 if(theiripnum
.ss_family
== AF_INET6
)
1225 ((struct sockaddr_in6
*)&client_p
->localClient
->ip
)->sin6_port
= htons(server_p
->port
);
1228 ((struct sockaddr_in
*)&client_p
->localClient
->ip
)->sin_port
= htons(server_p
->port
);
1230 client_p
->localClient
->dnsquery
= rb_malloc(sizeof(struct DNSQuery
));
1231 client_p
->localClient
->dnsquery
->ptr
= client_p
;
1232 client_p
->localClient
->dnsquery
->callback
= serv_connect_dns_callback
;
1233 gethost_byname_type(server_p
->host
, client_p
->localClient
->dnsquery
,
1235 server_p
->aftype
== AF_INET6
? T_AAAA
:
1243 serv_connect_ssl_callback(rb_fde_t
*F
, int status
, void *data
)
1245 struct Client
*client_p
= data
;
1247 rb_connect_sockaddr(F
, (struct sockaddr
*)&client_p
->localClient
->ip
, sizeof(client_p
->localClient
->ip
));
1250 /* Print error message, just like non-SSL. */
1251 serv_connect_callback(F
, status
, data
);
1254 if(rb_socketpair(AF_UNIX
, SOCK_STREAM
, 0, &xF
[0], &xF
[1], "Outgoing ssld connection") == -1)
1256 ilog_error("rb_socketpair failed for server");
1257 serv_connect_callback(F
, RB_ERROR
, data
);
1261 del_from_cli_fd_hash(client_p
);
1262 client_p
->localClient
->F
= xF
[0];
1263 add_to_cli_fd_hash(client_p
);
1265 client_p
->localClient
->ssl_ctl
= start_ssld_connect(F
, xF
[1], rb_get_fd(xF
[0]));
1267 serv_connect_callback(client_p
->localClient
->F
, RB_OK
, client_p
);
1271 * serv_connect_callback() - complete a server connection.
1273 * This routine is called after the server connection attempt has
1274 * completed. If unsucessful, an error is sent to ops and the client
1275 * is closed. If sucessful, it goes through the initialisation/check
1276 * procedures, the capabilities are sent, and the socket is then
1277 * marked for reading.
1280 serv_connect_callback(rb_fde_t
*F
, int status
, void *data
)
1282 struct Client
*client_p
= data
;
1283 struct server_conf
*server_p
;
1286 /* First, make sure its a real client! */
1287 s_assert(client_p
!= NULL
);
1288 s_assert(client_p
->localClient
->F
== F
);
1290 if(client_p
== NULL
)
1293 /* while we were waiting for the callback, its possible this already
1296 if(find_server(NULL
, client_p
->name
) != NULL
)
1298 exit_client(client_p
, client_p
, &me
, "Server Exists");
1302 if(client_p
->localClient
->ssl_ctl
== NULL
)
1303 rb_connect_sockaddr(F
, (struct sockaddr
*)&client_p
->localClient
->ip
, sizeof(client_p
->localClient
->ip
));
1305 /* Check the status */
1308 /* COMM_ERR_TIMEOUT wont have an errno associated with it,
1309 * the others will.. --fl
1311 if(status
== RB_ERR_TIMEOUT
)
1313 sendto_realops_snomask(SNO_GENERAL
, is_remote_connect(client_p
) ? L_NETWIDE
: L_ALL
,
1314 "Error connecting to %s[%s]: %s",
1318 ilog(L_SERVER
, "Error connecting to %s[%s]: %s",
1319 client_p
->name
, client_p
->sockhost
,
1324 errstr
= strerror(rb_get_sockerr(F
));
1325 sendto_realops_snomask(SNO_GENERAL
, is_remote_connect(client_p
) ? L_NETWIDE
: L_ALL
,
1326 "Error connecting to %s[%s]: %s (%s)",
1329 rb_errstr(status
), errstr
);
1330 ilog(L_SERVER
, "Error connecting to %s[%s]: %s (%s)",
1331 client_p
->name
, client_p
->sockhost
,
1332 rb_errstr(status
), errstr
);
1335 exit_client(client_p
, client_p
, &me
, rb_errstr(status
));
1339 /* COMM_OK, so continue the connection procedure */
1340 /* Get the C/N lines */
1341 if((server_p
= client_p
->localClient
->att_sconf
) == NULL
)
1343 sendto_realops_snomask(SNO_GENERAL
, is_remote_connect(client_p
) ? L_NETWIDE
: L_ALL
, "Lost connect{} block for %s",
1345 exit_client(client_p
, client_p
, &me
, "Lost connect{} block");
1349 /* Next, send the initial handshake */
1350 SetHandshake(client_p
);
1352 /* the server may be linking based on certificate fingerprint now. --nenolod */
1353 sendto_one(client_p
, "PASS %s TS %d :%s",
1354 EmptyString(server_p
->spasswd
) ? "*" : server_p
->spasswd
, TS_CURRENT
, me
.id
);
1356 /* pass my info to the new server */
1357 send_capabilities(client_p
, default_server_capabs
1358 | (ServerConfCompressed(server_p
) ? CAP_ZIP_SUPPORTED
: 0)
1359 | (ServerConfTb(server_p
) ? CAP_TB
: 0));
1361 sendto_one(client_p
, "SERVER %s 1 :%s%s",
1363 ConfigServerHide
.hidden
? "(H) " : "", me
.info
);
1366 * If we've been marked dead because a send failed, just exit
1367 * here now and save everyone the trouble of us ever existing.
1369 if(IsAnyDead(client_p
))
1371 sendto_realops_snomask(SNO_GENERAL
, is_remote_connect(client_p
) ? L_NETWIDE
: L_ALL
,
1372 "%s went dead during handshake", client_p
->name
);
1373 exit_client(client_p
, client_p
, &me
, "Went dead during handshake");
1377 /* don't move to serv_list yet -- we haven't sent a burst! */
1379 /* If we get here, we're ok, so lets start reading some data */
1380 read_packet(F
, client_p
);