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
28 #include <openssl/rsa.h>
38 #include "ircd_defs.h"
42 #include "s_newconf.h"
49 #include "channel.h" /* chcap_usage_counts stuff... */
54 #include "capability.h"
58 #define INADDR_NONE ((unsigned int) 0xffffffff)
61 int MaxConnectionCount
= 1;
62 int MaxClientCount
= 1;
63 int refresh_user_links
= 0;
65 static char buf
[BUFSIZE
];
68 * list of recognized server capabilities. "TS" is not on the list
69 * because all servers that we talk to already do TS, and the kludged
70 * extra argument to "PASS" takes care of checking that. -orabidoo
72 struct CapabilityIndex
*serv_capindex
= NULL
;
73 struct CapabilityIndex
*cli_capindex
= NULL
;
82 unsigned int CAP_KNOCK
;
84 unsigned int CAP_UNKLN
;
85 unsigned int CAP_CLUSTER
;
86 unsigned int CAP_ENCAP
;
88 unsigned int CAP_SERVICE
;
89 unsigned int CAP_RSFNC
;
90 unsigned int CAP_SAVE
;
91 unsigned int CAP_EUID
;
92 unsigned int CAP_EOPMOD
;
94 unsigned int CAP_MLOCK
;
96 unsigned int CLICAP_MULTI_PREFIX
;
97 unsigned int CLICAP_ACCOUNT_NOTIFY
;
98 unsigned int CLICAP_EXTENDED_JOIN
;
99 unsigned int CLICAP_AWAY_NOTIFY
;
100 unsigned int CLICAP_USERHOST_IN_NAMES
;
101 unsigned int CLICAP_CAP_NOTIFY
;
102 unsigned int CLICAP_CHGHOST
;
103 unsigned int CLICAP_ECHO_MESSAGE
;
106 * initialize our builtin capability table. --nenolod
109 init_builtin_capabs(void)
111 serv_capindex
= capability_index_create("server capabilities");
113 /* These two are not set via CAPAB/GCAP keywords. */
114 CAP_CAP
= capability_put_anonymous(serv_capindex
);
115 CAP_TS6
= capability_put_anonymous(serv_capindex
);
117 CAP_QS
= capability_put(serv_capindex
, "QS", NULL
);
118 CAP_EX
= capability_put(serv_capindex
, "EX", NULL
);
119 CAP_CHW
= capability_put(serv_capindex
, "CHW", NULL
);
120 CAP_IE
= capability_put(serv_capindex
, "IE", NULL
);
121 CAP_KLN
= capability_put(serv_capindex
, "KLN", NULL
);
122 CAP_KNOCK
= capability_put(serv_capindex
, "KNOCK", NULL
);
123 CAP_ZIP
= capability_put(serv_capindex
, "ZIP", NULL
);
124 CAP_TB
= capability_put(serv_capindex
, "TB", NULL
);
125 CAP_UNKLN
= capability_put(serv_capindex
, "UNKLN", NULL
);
126 CAP_CLUSTER
= capability_put(serv_capindex
, "CLUSTER", NULL
);
127 CAP_ENCAP
= capability_put(serv_capindex
, "ENCAP", NULL
);
128 CAP_SERVICE
= capability_put(serv_capindex
, "SERVICES", NULL
);
129 CAP_RSFNC
= capability_put(serv_capindex
, "RSFNC", NULL
);
130 CAP_SAVE
= capability_put(serv_capindex
, "SAVE", NULL
);
131 CAP_EUID
= capability_put(serv_capindex
, "EUID", NULL
);
132 CAP_EOPMOD
= capability_put(serv_capindex
, "EOPMOD", NULL
);
133 CAP_BAN
= capability_put(serv_capindex
, "BAN", NULL
);
134 CAP_MLOCK
= capability_put(serv_capindex
, "MLOCK", NULL
);
136 capability_require(serv_capindex
, "QS");
137 capability_require(serv_capindex
, "EX");
138 capability_require(serv_capindex
, "IE");
139 capability_require(serv_capindex
, "ENCAP");
141 cli_capindex
= capability_index_create("client capabilities");
143 CLICAP_MULTI_PREFIX
= capability_put(cli_capindex
, "multi-prefix", NULL
);
144 CLICAP_ACCOUNT_NOTIFY
= capability_put(cli_capindex
, "account-notify", NULL
);
145 CLICAP_EXTENDED_JOIN
= capability_put(cli_capindex
, "extended-join", NULL
);
146 CLICAP_AWAY_NOTIFY
= capability_put(cli_capindex
, "away-notify", NULL
);
147 CLICAP_USERHOST_IN_NAMES
= capability_put(cli_capindex
, "userhost-in-names", NULL
);
148 CLICAP_CAP_NOTIFY
= capability_put(cli_capindex
, "cap-notify", NULL
);
149 CLICAP_CHGHOST
= capability_put(cli_capindex
, "chghost", NULL
);
150 CLICAP_ECHO_MESSAGE
= capability_put(cli_capindex
, "echo-message", NULL
);
153 static CNCB serv_connect_callback
;
154 static CNCB serv_connect_ssl_callback
;
157 * hunt_server - Do the basic thing in delivering the message (command)
158 * across the relays to the specific server (server) for
161 * Note: The command is a format string and *MUST* be
162 * of prefixed style (e.g. ":%s COMMAND %s ...").
163 * Command can have only max 8 parameters.
165 * server parv[server] is the parameter identifying the
169 * parv[server] is replaced with the pointer to the
170 * real servername from the matched client (I'm lazy
173 * returns: (see #defines)
176 hunt_server(struct Client
*client_p
, struct Client
*source_p
,
177 const char *command
, int server
, int parc
, const char *parv
[])
179 struct Client
*target_p
;
186 * Assume it's me, if no server
188 if(parc
<= server
|| EmptyString(parv
[server
]) ||
189 match(parv
[server
], me
.name
) || (strcmp(parv
[server
], me
.id
) == 0))
190 return (HUNTED_ISME
);
192 new = LOCAL_COPY(parv
[server
]);
195 * These are to pickup matches that would cause the following
196 * message to go in the wrong direction while doing quick fast
197 * non-matching lookups.
199 if(MyClient(source_p
))
200 target_p
= find_named_client(new);
202 target_p
= find_client(new);
205 if(target_p
->from
== source_p
->from
&& !MyConnect(target_p
))
209 wilds
= (strchr(new, '?') || strchr(new, '*'));
212 * Again, if there are no wild cards involved in the server
213 * name, use the hash lookup
215 if(!target_p
&& wilds
)
217 RB_DLINK_FOREACH(ptr
, global_serv_list
.head
)
219 if(match(new, ((struct Client
*) (ptr
->data
))->name
))
221 target_p
= ptr
->data
;
227 if(target_p
&& !IsRegistered(target_p
))
232 if(IsMe(target_p
) || MyClient(target_p
))
236 parv
[server
] = get_id(target_p
, target_p
);
238 sendto_one(target_p
, command
, get_id(source_p
, target_p
),
239 parv
[1], parv
[2], parv
[3], parv
[4], parv
[5], parv
[6], parv
[7], parv
[8]);
241 return (HUNTED_PASS
);
244 if(MyClient(source_p
) || !IsDigit(parv
[server
][0]))
245 sendto_one_numeric(source_p
, ERR_NOSUCHSERVER
,
246 form_str(ERR_NOSUCHSERVER
), parv
[server
]);
247 return (HUNTED_NOSUCH
);
251 * try_connections - scan through configuration and try new connections.
252 * Returns the calendar time when the next call to this
253 * function should be made latest. (No harm done if this
254 * is called earlier or later...)
257 try_connections(void *unused
)
259 struct Client
*client_p
;
260 struct server_conf
*server_p
= NULL
;
261 struct server_conf
*tmp_p
;
264 bool connecting
= false;
268 RB_DLINK_FOREACH(ptr
, server_conf_list
.head
)
272 if(ServerConfIllegal(tmp_p
) || !ServerConfAutoconn(tmp_p
))
275 /* don't allow ssl connections if ssl isn't setup */
276 if(ServerConfSSL(tmp_p
) && (!ssl_ok
|| !get_ssld_count()))
279 cltmp
= tmp_p
->class;
282 * Skip this entry if the use of it is still on hold until
283 * future. Otherwise handle this entry (and set it on hold
284 * until next time). Will reset only hold times, if already
285 * made one successfull connection... [this algorithm is
286 * a bit fuzzy... -- msa >;) ]
288 if(tmp_p
->hold
> rb_current_time())
290 if(next
> tmp_p
->hold
|| next
== 0)
295 confrq
= get_con_freq(cltmp
);
296 tmp_p
->hold
= rb_current_time() + confrq
;
299 * Found a CONNECT config with port specified, scan clients
300 * and see if this server is already connected?
302 client_p
= find_server(NULL
, tmp_p
->name
);
304 if(!client_p
&& (CurrUsers(cltmp
) < MaxUsers(cltmp
)) && !connecting
)
308 /* We connect only one at time... */
312 if((next
> tmp_p
->hold
) || (next
== 0))
316 /* TODO: change this to set active flag to 0 when added to event! --Habeeb */
317 if(GlobalSetOptions
.autoconn
== 0)
323 /* move this connect entry to end.. */
324 rb_dlinkDelete(&server_p
->node
, &server_conf_list
);
325 rb_dlinkAddTail(server_p
, &server_p
->node
, &server_conf_list
);
328 * We used to only print this if serv_connect() actually
329 * suceeded, but since rb_tcp_connect() can call the callback
330 * immediately if there is an error, we were getting error messages
331 * in the wrong order. SO, we just print out the activated line,
332 * and let serv_connect() / serv_connect_callback() print an
333 * error afterwards if it fails.
336 sendto_realops_snomask(SNO_GENERAL
, L_ALL
,
337 "Connection to %s activated",
340 serv_connect(server_p
, 0);
344 check_server(const char *name
, struct Client
*client_p
)
346 struct server_conf
*server_p
= NULL
;
347 struct server_conf
*tmp_p
;
352 s_assert(NULL
!= client_p
);
356 if(!(client_p
->localClient
->passwd
))
359 if(strlen(name
) > HOSTLEN
)
362 RB_DLINK_FOREACH(ptr
, server_conf_list
.head
)
366 if(ServerConfIllegal(tmp_p
))
369 if(!match(tmp_p
->name
, name
))
374 /* XXX: Fix me for IPv6 */
375 /* XXX sockhost is the IPv4 ip as a string */
376 if(match(tmp_p
->host
, client_p
->host
) ||
377 match(tmp_p
->host
, client_p
->sockhost
))
383 if(ServerConfEncrypted(tmp_p
))
385 encr
= rb_crypt(client_p
->localClient
->passwd
,
387 if(encr
!= NULL
&& !strcmp(tmp_p
->passwd
, encr
))
395 else if(strcmp(tmp_p
->passwd
, client_p
->localClient
->passwd
))
401 if(!client_p
->certfp
|| strcasecmp(tmp_p
->certfp
, client_p
->certfp
) != 0)
413 if(ServerConfSSL(server_p
) && client_p
->localClient
->ssl_ctl
== NULL
)
418 attach_server_conf(client_p
, server_p
);
420 /* clear ZIP/TB if they support but we dont want them */
422 if(!ServerConfCompressed(server_p
))
424 ClearCap(client_p
, CAP_ZIP
);
426 if(!ServerConfTb(server_p
))
427 ClearCap(client_p
, CAP_TB
);
435 * inputs - Client pointer to send to
436 * - int flag of capabilities that this server has
438 * side effects - send the CAPAB line to a server -orabidoo
441 send_capabilities(struct Client
*client_p
, unsigned int cap_can_send
)
443 sendto_one(client_p
, "CAPAB :%s", capability_index_list(serv_capindex
, cap_can_send
));
447 burst_ban(struct Client
*client_p
)
450 struct ConfItem
*aconf
;
451 const char *type
, *oper
;
452 /* +5 for !,@,{,} and null */
453 char operbuf
[NICKLEN
+ USERLEN
+ HOSTLEN
+ HOSTLEN
+ 5];
457 melen
= strlen(me
.name
);
458 RB_DLINK_FOREACH(ptr
, prop_bans
.head
)
462 /* Skip expired stuff. */
463 if(aconf
->lifetime
< rb_current_time())
465 switch(aconf
->status
& ~CONF_ILLEGAL
)
467 case CONF_KILL
: type
= "K"; break;
468 case CONF_DLINE
: type
= "D"; break;
469 case CONF_XLINE
: type
= "X"; break;
470 case CONF_RESV_NICK
: type
= "R"; break;
471 case CONF_RESV_CHANNEL
: type
= "R"; break;
475 oper
= aconf
->info
.oper
;
476 if(aconf
->flags
& CONF_FLAGS_MYOPER
)
478 /* Our operator{} names may not be meaningful
479 * to other servers, so rewrite to our server
482 rb_strlcpy(operbuf
, aconf
->info
.oper
, sizeof buf
);
483 p
= strrchr(operbuf
, '{');
485 operbuf
+ sizeof operbuf
- p
> (ptrdiff_t)(melen
+ 2))
487 memcpy(p
+ 1, me
.name
, melen
);
493 sendto_one(client_p
, ":%s BAN %s %s %s %lu %d %d %s :%s%s%s",
496 aconf
->user
? aconf
->user
: "*", aconf
->host
,
497 (unsigned long)aconf
->created
,
498 (int)(aconf
->hold
- aconf
->created
),
499 (int)(aconf
->lifetime
- aconf
->created
),
502 aconf
->spasswd
? "|" : "",
503 aconf
->spasswd
? aconf
->spasswd
: "");
509 * input - client to burst to, channel name, list to burst, mode flag
511 * side effects - client is sent a list of +b, +e, or +I modes
514 burst_modes_TS6(struct Client
*client_p
, struct Channel
*chptr
,
515 rb_dlink_list
*list
, char flag
)
524 cur_len
= mlen
= sprintf(buf
, ":%s BMASK %ld %s %c :",
525 me
.id
, (long) chptr
->channelts
, chptr
->chname
, flag
);
528 RB_DLINK_FOREACH(ptr
, list
->head
)
532 tlen
= strlen(banptr
->banstr
) + (banptr
->forward
? strlen(banptr
->forward
) + 1 : 0) + 1;
535 if(cur_len
+ tlen
> BUFSIZE
- 3)
537 /* the one we're trying to send doesnt fit at all! */
544 /* chop off trailing space and send.. */
546 sendto_one(client_p
, "%s", buf
);
552 sprintf(t
, "%s$%s ", banptr
->banstr
, banptr
->forward
);
554 sprintf(t
, "%s ", banptr
->banstr
);
559 /* cant ever exit the loop above without having modified buf,
560 * chop off trailing space and send.
563 sendto_one(client_p
, "%s", buf
);
569 * inputs - client (server) to send nick towards
570 * - client to send nick for
572 * side effects - NICK message is sent towards given client_p
575 burst_TS6(struct Client
*client_p
)
578 struct Client
*target_p
;
579 struct Channel
*chptr
;
580 struct membership
*msptr
;
581 hook_data_client hclientinfo
;
582 hook_data_channel hchaninfo
;
589 hclientinfo
.client
= hchaninfo
.client
= client_p
;
591 RB_DLINK_FOREACH(ptr
, global_client_list
.head
)
593 target_p
= ptr
->data
;
595 if(!IsPerson(target_p
))
598 send_umode(NULL
, target_p
, 0, ubuf
);
605 if(IsCapable(client_p
, CAP_EUID
))
606 sendto_one(client_p
, ":%s EUID %s %d %ld %s %s %s %s %s %s %s :%s",
607 target_p
->servptr
->id
, target_p
->name
,
608 target_p
->hopcount
+ 1,
609 (long) target_p
->tsinfo
, ubuf
,
610 target_p
->username
, target_p
->host
,
611 IsIPSpoof(target_p
) ? "0" : target_p
->sockhost
,
613 IsDynSpoof(target_p
) ? target_p
->orighost
: "*",
614 EmptyString(target_p
->user
->suser
) ? "*" : target_p
->user
->suser
,
617 sendto_one(client_p
, ":%s UID %s %d %ld %s %s %s %s %s :%s",
618 target_p
->servptr
->id
, target_p
->name
,
619 target_p
->hopcount
+ 1,
620 (long) target_p
->tsinfo
, ubuf
,
621 target_p
->username
, target_p
->host
,
622 IsIPSpoof(target_p
) ? "0" : target_p
->sockhost
,
623 target_p
->id
, target_p
->info
);
625 if(!EmptyString(target_p
->certfp
))
626 sendto_one(client_p
, ":%s ENCAP * CERTFP :%s",
627 use_id(target_p
), target_p
->certfp
);
629 if(!IsCapable(client_p
, CAP_EUID
))
631 if(IsDynSpoof(target_p
))
632 sendto_one(client_p
, ":%s ENCAP * REALHOST %s",
633 use_id(target_p
), target_p
->orighost
);
634 if(!EmptyString(target_p
->user
->suser
))
635 sendto_one(client_p
, ":%s ENCAP * LOGIN %s",
636 use_id(target_p
), target_p
->user
->suser
);
639 if(ConfigFileEntry
.burst_away
&& !EmptyString(target_p
->user
->away
))
640 sendto_one(client_p
, ":%s AWAY :%s",
642 target_p
->user
->away
);
644 hclientinfo
.target
= target_p
;
645 call_hook(h_burst_client
, &hclientinfo
);
648 RB_DLINK_FOREACH(ptr
, global_channel_list
.head
)
652 if(*chptr
->chname
!= '#')
655 cur_len
= mlen
= sprintf(buf
, ":%s SJOIN %ld %s %s :", me
.id
,
656 (long) chptr
->channelts
, chptr
->chname
,
657 channel_modes(chptr
, client_p
));
661 RB_DLINK_FOREACH(uptr
, chptr
->members
.head
)
665 tlen
= strlen(use_id(msptr
->client_p
)) + 1;
671 if(cur_len
+ tlen
>= BUFSIZE
- 3)
674 sendto_one(client_p
, "%s", buf
);
679 sprintf(t
, "%s%s ", find_channel_status(msptr
, 1),
680 use_id(msptr
->client_p
));
686 if (rb_dlink_list_length(&chptr
->members
) > 0)
688 /* remove trailing space */
691 sendto_one(client_p
, "%s", buf
);
693 if(rb_dlink_list_length(&chptr
->banlist
) > 0)
694 burst_modes_TS6(client_p
, chptr
, &chptr
->banlist
, 'b');
696 if(IsCapable(client_p
, CAP_EX
) &&
697 rb_dlink_list_length(&chptr
->exceptlist
) > 0)
698 burst_modes_TS6(client_p
, chptr
, &chptr
->exceptlist
, 'e');
700 if(IsCapable(client_p
, CAP_IE
) &&
701 rb_dlink_list_length(&chptr
->invexlist
) > 0)
702 burst_modes_TS6(client_p
, chptr
, &chptr
->invexlist
, 'I');
704 if(rb_dlink_list_length(&chptr
->quietlist
) > 0)
705 burst_modes_TS6(client_p
, chptr
, &chptr
->quietlist
, 'q');
707 if(IsCapable(client_p
, CAP_TB
) && chptr
->topic
!= NULL
)
708 sendto_one(client_p
, ":%s TB %s %ld %s%s:%s",
709 me
.id
, chptr
->chname
, (long) chptr
->topic_time
,
710 ConfigChannel
.burst_topicwho
? chptr
->topic_info
: "",
711 ConfigChannel
.burst_topicwho
? " " : "",
714 if(IsCapable(client_p
, CAP_MLOCK
))
715 sendto_one(client_p
, ":%s MLOCK %ld %s :%s",
716 me
.id
, (long) chptr
->channelts
, chptr
->chname
,
717 EmptyString(chptr
->mode_lock
) ? "" : chptr
->mode_lock
);
719 hchaninfo
.chptr
= chptr
;
720 call_hook(h_burst_channel
, &hchaninfo
);
723 hclientinfo
.target
= NULL
;
724 call_hook(h_burst_finished
, &hclientinfo
);
728 * show_capabilities - show current server capabilities
730 * inputs - pointer to an struct Client
731 * output - pointer to static string
732 * side effects - build up string representing capabilities of server listed
735 show_capabilities(struct Client
*target_p
)
737 static char msgbuf
[BUFSIZE
];
742 rb_strlcpy(msgbuf
, " TS6", sizeof(msgbuf
));
745 rb_strlcat(msgbuf
, " SSL", sizeof(msgbuf
));
747 if(!IsServer(target_p
) || !target_p
->serv
->caps
) /* short circuit if no caps */
750 rb_strlcat(msgbuf
, " ", sizeof(msgbuf
));
751 rb_strlcat(msgbuf
, capability_index_list(serv_capindex
, target_p
->serv
->caps
), sizeof(msgbuf
));
759 * inputs - pointer to a struct Client
764 server_estab(struct Client
*client_p
)
766 struct Client
*target_p
;
767 struct server_conf
*server_p
;
768 hook_data_client hdata
;
771 char note
[HOSTLEN
+ 15];
773 s_assert(NULL
!= client_p
);
777 host
= client_p
->name
;
779 if((server_p
= client_p
->localClient
->att_sconf
) == NULL
)
781 /* This shouldn't happen, better tell the ops... -A1kmm */
782 sendto_realops_snomask(SNO_GENERAL
, is_remote_connect(client_p
) ? L_NETWIDE
: L_ALL
,
783 "Warning: Lost connect{} block for server %s!", host
);
784 return exit_client(client_p
, client_p
, client_p
, "Lost connect{} block!");
787 /* We shouldn't have to check this, it should already done before
788 * server_estab is called. -A1kmm
790 if(client_p
->localClient
->passwd
)
792 memset(client_p
->localClient
->passwd
, 0, strlen(client_p
->localClient
->passwd
));
793 rb_free(client_p
->localClient
->passwd
);
794 client_p
->localClient
->passwd
= NULL
;
797 /* Its got identd , since its a server */
800 /* If there is something in the serv_list, it might be this
801 * connecting server..
803 if(!ServerInfo
.hub
&& serv_list
.head
)
805 if(client_p
!= serv_list
.head
->data
|| serv_list
.head
->next
)
807 ServerStats
.is_ref
++;
808 sendto_one(client_p
, "ERROR :I'm a leaf not a hub");
809 return exit_client(client_p
, client_p
, client_p
, "I'm a leaf");
813 if(IsUnknown(client_p
))
815 /* the server may be linking based on certificate fingerprint now. --nenolod */
816 sendto_one(client_p
, "PASS %s TS %d :%s",
817 EmptyString(server_p
->spasswd
) ? "*" : server_p
->spasswd
, TS_CURRENT
, me
.id
);
819 /* pass info to new server */
820 send_capabilities(client_p
, default_server_capabs
821 | (ServerConfCompressed(server_p
) ? CAP_ZIP_SUPPORTED
: 0)
822 | (ServerConfTb(server_p
) ? CAP_TB
: 0));
824 sendto_one(client_p
, "SERVER %s 1 :%s%s",
826 ConfigServerHide
.hidden
? "(H) " : "",
827 (me
.info
[0]) ? (me
.info
) : "IRCers United");
830 if(!rb_set_buffers(client_p
->localClient
->F
, READBUF_SIZE
))
831 ilog_error("rb_set_buffers failed for server");
833 /* Enable compression now */
834 if(IsCapable(client_p
, CAP_ZIP
))
836 start_zlib_session(client_p
);
838 sendto_one(client_p
, "SVINFO %d %d 0 :%ld", TS_CURRENT
, TS_MIN
, (long int)rb_current_time());
840 client_p
->servptr
= &me
;
842 if(IsAnyDead(client_p
))
843 return CLIENT_EXITED
;
847 rb_dlinkAdd(client_p
, &client_p
->lnode
, &me
.serv
->servers
);
848 rb_dlinkMoveNode(&client_p
->localClient
->tnode
, &unknown_list
, &serv_list
);
849 rb_dlinkAddTailAlloc(client_p
, &global_serv_list
);
852 add_to_id_hash(client_p
->id
, client_p
);
854 add_to_client_hash(client_p
->name
, client_p
);
855 /* doesnt duplicate client_p->serv if allocated this struct already */
856 make_server(client_p
);
858 client_p
->serv
->caps
= client_p
->localClient
->caps
;
860 if(client_p
->localClient
->fullcaps
)
862 client_p
->serv
->fullcaps
= rb_strdup(client_p
->localClient
->fullcaps
);
863 rb_free(client_p
->localClient
->fullcaps
);
864 client_p
->localClient
->fullcaps
= NULL
;
867 client_p
->serv
->nameinfo
= scache_connect(client_p
->name
, client_p
->info
, IsHidden(client_p
));
868 client_p
->localClient
->firsttime
= rb_current_time();
869 /* fixing eob timings.. -gnp */
871 if((rb_dlink_list_length(&lclient_list
) + rb_dlink_list_length(&serv_list
)) >
872 (unsigned long)MaxConnectionCount
)
873 MaxConnectionCount
= rb_dlink_list_length(&lclient_list
) +
874 rb_dlink_list_length(&serv_list
);
876 /* Show the real host/IP to admins */
877 sendto_realops_snomask(SNO_GENERAL
, L_ALL
,
878 "Link with %s established: (%s) link",
880 show_capabilities(client_p
));
882 ilog(L_SERVER
, "Link with %s established: (%s) link",
883 log_client_name(client_p
, SHOW_IP
), show_capabilities(client_p
));
886 hdata
.target
= client_p
;
887 call_hook(h_server_introduced
, &hdata
);
889 snprintf(note
, sizeof(note
), "Server: %s", client_p
->name
);
890 rb_note(client_p
->localClient
->F
, note
);
893 ** Old sendto_serv_but_one() call removed because we now
894 ** need to send different names to different servers
895 ** (domain name matching) Send new server to other servers.
897 RB_DLINK_FOREACH(ptr
, serv_list
.head
)
899 target_p
= ptr
->data
;
901 if(target_p
== client_p
)
904 if(has_id(target_p
) && has_id(client_p
))
906 sendto_one(target_p
, ":%s SID %s 2 %s :%s%s",
907 me
.id
, client_p
->name
, client_p
->id
,
908 IsHidden(client_p
) ? "(H) " : "", client_p
->info
);
910 if(!EmptyString(client_p
->serv
->fullcaps
))
911 sendto_one(target_p
, ":%s ENCAP * GCAP :%s",
912 client_p
->id
, client_p
->serv
->fullcaps
);
916 sendto_one(target_p
, ":%s SERVER %s 2 :%s%s",
917 me
.name
, client_p
->name
,
918 IsHidden(client_p
) ? "(H) " : "", client_p
->info
);
920 if(!EmptyString(client_p
->serv
->fullcaps
))
921 sendto_one(target_p
, ":%s ENCAP * GCAP :%s",
922 client_p
->name
, client_p
->serv
->fullcaps
);
927 ** Pass on my client information to the new server
929 ** First, pass only servers (idea is that if the link gets
930 ** cancelled beacause the server was already there,
931 ** there are no NICK's to be cancelled...). Of course,
932 ** if cancellation occurs, all this info is sent anyway,
933 ** and I guess the link dies when a read is attempted...? --msa
935 ** Note: Link cancellation to occur at this point means
936 ** that at least two servers from my fragment are building
937 ** up connection this other fragment at the same time, it's
938 ** a race condition, not the normal way of operation...
940 ** ALSO NOTE: using the get_client_name for server names--
941 ** see previous *WARNING*!!! (Also, original inpath
944 RB_DLINK_FOREACH(ptr
, global_serv_list
.head
)
946 target_p
= ptr
->data
;
948 /* target_p->from == target_p for target_p == client_p */
949 if(IsMe(target_p
) || target_p
->from
== client_p
)
952 /* presumption, if target has an id, so does its uplink */
953 if(has_id(client_p
) && has_id(target_p
))
954 sendto_one(client_p
, ":%s SID %s %d %s :%s%s",
955 target_p
->servptr
->id
, target_p
->name
,
956 target_p
->hopcount
+ 1, target_p
->id
,
957 IsHidden(target_p
) ? "(H) " : "", target_p
->info
);
959 sendto_one(client_p
, ":%s SERVER %s %d :%s%s",
960 target_p
->servptr
->name
,
961 target_p
->name
, target_p
->hopcount
+ 1,
962 IsHidden(target_p
) ? "(H) " : "", target_p
->info
);
964 if(!EmptyString(target_p
->serv
->fullcaps
))
965 sendto_one(client_p
, ":%s ENCAP * GCAP :%s",
966 get_id(target_p
, client_p
),
967 target_p
->serv
->fullcaps
);
970 if(IsCapable(client_p
, CAP_BAN
))
975 /* Always send a PING after connect burst is done */
976 sendto_one(client_p
, "PING :%s", get_id(&me
, client_p
));
978 free_pre_client(client_p
);
980 send_pop_queue(client_p
);
986 * New server connection code
987 * Based upon the stuff floating about in s_bsd.c
992 * serv_connect() - initiate a server connection
994 * inputs - pointer to conf
995 * - pointer to client doing the connet
999 * This code initiates a connection to a server. It first checks to make
1000 * sure the given server exists. If this is the case, it creates a socket,
1001 * creates a client, saves the socket information in the client, and
1002 * initiates a connection to the server through rb_connect_tcp(). The
1003 * completion of this goes through serv_completed_connection().
1005 * We return 1 if the connection is attempted, since we don't know whether
1006 * it suceeded or not, and 0 if it fails in here somewhere.
1009 serv_connect(struct server_conf
*server_p
, struct Client
*by
)
1011 struct Client
*client_p
;
1012 struct rb_sockaddr_storage myipnum
;
1013 char note
[HOSTLEN
+ 10];
1016 s_assert(server_p
!= NULL
);
1017 if(server_p
== NULL
)
1021 rb_inet_ntop_sock((struct sockaddr
*)&server_p
->my_ipnum
, buf
, sizeof(buf
));
1022 ilog(L_SERVER
, "Connect to *[%s] @%s", server_p
->name
, buf
);
1025 * Make sure this server isn't already connected
1027 if((client_p
= find_server(NULL
, server_p
->name
)))
1029 sendto_realops_snomask(SNO_GENERAL
, L_ALL
,
1030 "Server %s already present from %s",
1031 server_p
->name
, client_p
->name
);
1032 if(by
&& IsPerson(by
) && !MyClient(by
))
1033 sendto_one_notice(by
, ":Server %s already present from %s",
1034 server_p
->name
, client_p
->name
);
1038 /* create a socket for the server connection */
1039 if((F
= rb_socket(GET_SS_FAMILY(&server_p
->my_ipnum
), SOCK_STREAM
, 0, NULL
)) == NULL
)
1041 ilog_error("opening a stream socket");
1045 /* servernames are always guaranteed under HOSTLEN chars */
1046 snprintf(note
, sizeof(note
), "Server: %s", server_p
->name
);
1049 /* Create a local client */
1050 client_p
= make_client(NULL
);
1052 /* Copy in the server, hostname, fd */
1053 rb_strlcpy(client_p
->name
, server_p
->name
, sizeof(client_p
->name
));
1054 rb_strlcpy(client_p
->host
, server_p
->host
, sizeof(client_p
->host
));
1055 rb_strlcpy(client_p
->sockhost
, buf
, sizeof(client_p
->sockhost
));
1056 client_p
->localClient
->F
= F
;
1057 /* shove the port number into the sockaddr */
1059 if(GET_SS_FAMILY(&server_p
->my_ipnum
) == AF_INET6
)
1060 ((struct sockaddr_in6
*)&server_p
->my_ipnum
)->sin6_port
= htons(server_p
->port
);
1063 ((struct sockaddr_in
*)&server_p
->my_ipnum
)->sin_port
= htons(server_p
->port
);
1066 * Set up the initial server evilness, ripped straight from
1067 * connect_server(), so don't blame me for it being evil.
1071 if(!rb_set_buffers(client_p
->localClient
->F
, READBUF_SIZE
))
1073 ilog_error("setting the buffer size for a server connection");
1077 * Attach config entries to client here rather than in
1078 * serv_connect_callback(). This to avoid null pointer references.
1080 attach_server_conf(client_p
, server_p
);
1083 * at this point we have a connection in progress and C/N lines
1084 * attached to the client, the socket info should be saved in the
1085 * client and it should either be resolved or have a valid address.
1087 * The socket has been connected or connect is in progress.
1089 make_server(client_p
);
1090 if(by
&& IsClient(by
))
1091 strcpy(client_p
->serv
->by
, by
->name
);
1093 strcpy(client_p
->serv
->by
, "AutoConn.");
1095 SetConnecting(client_p
);
1096 rb_dlinkAddTail(client_p
, &client_p
->node
, &global_client_list
);
1098 if(ServerConfVhosted(server_p
))
1100 memcpy(&myipnum
, &server_p
->my_ipnum
, sizeof(myipnum
));
1101 ((struct sockaddr_in
*)&myipnum
)->sin_port
= 0;
1102 SET_SS_FAMILY(&myipnum
, GET_SS_FAMILY(&server_p
->my_ipnum
));
1105 else if(GET_SS_FAMILY(&server_p
->my_ipnum
) == AF_INET
&& ServerInfo
.specific_ipv4_vhost
)
1107 memcpy(&myipnum
, &ServerInfo
.ip
, sizeof(myipnum
));
1108 ((struct sockaddr_in
*)&myipnum
)->sin_port
= 0;
1109 SET_SS_FAMILY(&myipnum
, AF_INET
);
1110 SET_SS_LEN(&myipnum
, sizeof(struct sockaddr_in
));
1114 else if((GET_SS_FAMILY(&server_p
->my_ipnum
) == AF_INET6
) && ServerInfo
.specific_ipv6_vhost
)
1116 memcpy(&myipnum
, &ServerInfo
.ip6
, sizeof(myipnum
));
1117 ((struct sockaddr_in6
*)&myipnum
)->sin6_port
= 0;
1118 SET_SS_FAMILY(&myipnum
, AF_INET6
);
1119 SET_SS_LEN(&myipnum
, sizeof(struct sockaddr_in6
));
1124 if(ServerConfSSL(server_p
))
1126 rb_connect_tcp(client_p
->localClient
->F
,
1127 (struct sockaddr
*)&server_p
->my_ipnum
, NULL
, 0,
1128 serv_connect_ssl_callback
, client_p
,
1129 ConfigFileEntry
.connect_timeout
);
1132 rb_connect_tcp(client_p
->localClient
->F
,
1133 (struct sockaddr
*)&server_p
->my_ipnum
, NULL
, 0,
1134 serv_connect_callback
, client_p
,
1135 ConfigFileEntry
.connect_timeout
);
1139 if(ServerConfSSL(server_p
))
1140 rb_connect_tcp(client_p
->localClient
->F
, (struct sockaddr
*)&server_p
->my_ipnum
,
1141 (struct sockaddr
*)&myipnum
,
1142 GET_SS_LEN(&myipnum
), serv_connect_ssl_callback
, client_p
,
1143 ConfigFileEntry
.connect_timeout
);
1145 rb_connect_tcp(client_p
->localClient
->F
, (struct sockaddr
*)&server_p
->my_ipnum
,
1146 (struct sockaddr
*)&myipnum
,
1147 GET_SS_LEN(&myipnum
), serv_connect_callback
, client_p
,
1148 ConfigFileEntry
.connect_timeout
);
1154 serv_connect_ssl_callback(rb_fde_t
*F
, int status
, void *data
)
1156 struct Client
*client_p
= data
;
1158 rb_connect_sockaddr(F
, (struct sockaddr
*)&client_p
->localClient
->ip
, sizeof(client_p
->localClient
->ip
));
1161 /* Print error message, just like non-SSL. */
1162 serv_connect_callback(F
, status
, data
);
1165 if(rb_socketpair(AF_UNIX
, SOCK_STREAM
, 0, &xF
[0], &xF
[1], "Outgoing ssld connection") == -1)
1167 ilog_error("rb_socketpair failed for server");
1168 serv_connect_callback(F
, RB_ERROR
, data
);
1172 client_p
->localClient
->F
= xF
[0];
1174 client_p
->localClient
->ssl_ctl
= start_ssld_connect(F
, xF
[1], rb_get_fd(xF
[0]));
1175 if(!client_p
->localClient
->ssl_ctl
)
1177 serv_connect_callback(client_p
->localClient
->F
, RB_ERROR
, data
);
1181 serv_connect_callback(client_p
->localClient
->F
, RB_OK
, client_p
);
1185 * serv_connect_callback() - complete a server connection.
1187 * This routine is called after the server connection attempt has
1188 * completed. If unsucessful, an error is sent to ops and the client
1189 * is closed. If sucessful, it goes through the initialisation/check
1190 * procedures, the capabilities are sent, and the socket is then
1191 * marked for reading.
1194 serv_connect_callback(rb_fde_t
*F
, int status
, void *data
)
1196 struct Client
*client_p
= data
;
1197 struct server_conf
*server_p
;
1200 /* First, make sure its a real client! */
1201 s_assert(client_p
!= NULL
);
1202 s_assert(client_p
->localClient
->F
== F
);
1204 if(client_p
== NULL
)
1207 /* while we were waiting for the callback, its possible this already
1210 if(find_server(NULL
, client_p
->name
) != NULL
)
1212 exit_client(client_p
, client_p
, &me
, "Server Exists");
1216 if(client_p
->localClient
->ssl_ctl
== NULL
)
1217 rb_connect_sockaddr(F
, (struct sockaddr
*)&client_p
->localClient
->ip
, sizeof(client_p
->localClient
->ip
));
1219 /* Check the status */
1222 /* COMM_ERR_TIMEOUT wont have an errno associated with it,
1223 * the others will.. --fl
1225 if(status
== RB_ERR_TIMEOUT
)
1227 sendto_realops_snomask(SNO_GENERAL
, is_remote_connect(client_p
) ? L_NETWIDE
: L_ALL
,
1228 "Error connecting to %s[%s]: %s",
1232 ilog(L_SERVER
, "Error connecting to %s[%s]: %s",
1233 client_p
->name
, client_p
->sockhost
,
1238 errstr
= strerror(rb_get_sockerr(F
));
1239 sendto_realops_snomask(SNO_GENERAL
, is_remote_connect(client_p
) ? L_NETWIDE
: L_ALL
,
1240 "Error connecting to %s[%s]: %s (%s)",
1243 rb_errstr(status
), errstr
);
1244 ilog(L_SERVER
, "Error connecting to %s[%s]: %s (%s)",
1245 client_p
->name
, client_p
->sockhost
,
1246 rb_errstr(status
), errstr
);
1249 exit_client(client_p
, client_p
, &me
, rb_errstr(status
));
1253 /* COMM_OK, so continue the connection procedure */
1254 /* Get the C/N lines */
1255 if((server_p
= client_p
->localClient
->att_sconf
) == NULL
)
1257 sendto_realops_snomask(SNO_GENERAL
, is_remote_connect(client_p
) ? L_NETWIDE
: L_ALL
, "Lost connect{} block for %s",
1259 exit_client(client_p
, client_p
, &me
, "Lost connect{} block");
1263 /* Next, send the initial handshake */
1264 SetHandshake(client_p
);
1266 /* the server may be linking based on certificate fingerprint now. --nenolod */
1267 sendto_one(client_p
, "PASS %s TS %d :%s",
1268 EmptyString(server_p
->spasswd
) ? "*" : server_p
->spasswd
, TS_CURRENT
, me
.id
);
1270 /* pass my info to the new server */
1271 send_capabilities(client_p
, default_server_capabs
1272 | (ServerConfCompressed(server_p
) ? CAP_ZIP_SUPPORTED
: 0)
1273 | (ServerConfTb(server_p
) ? CAP_TB
: 0));
1275 sendto_one(client_p
, "SERVER %s 1 :%s%s",
1277 ConfigServerHide
.hidden
? "(H) " : "", me
.info
);
1280 * If we've been marked dead because a send failed, just exit
1281 * here now and save everyone the trouble of us ever existing.
1283 if(IsAnyDead(client_p
))
1285 sendto_realops_snomask(SNO_GENERAL
, is_remote_connect(client_p
) ? L_NETWIDE
: L_ALL
,
1286 "%s went dead during handshake", client_p
->name
);
1287 exit_client(client_p
, client_p
, &me
, "Went dead during handshake");
1291 /* don't move to serv_list yet -- we haven't sent a burst! */
1293 /* If we get here, we're ok, so lets start reading some data */
1294 read_packet(F
, client_p
);