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>
37 #include "ircd_defs.h"
41 #include "s_newconf.h"
48 #include "channel.h" /* chcap_usage_counts stuff... */
53 #include "capability.h"
57 #define INADDR_NONE ((unsigned int) 0xffffffff)
60 int MaxConnectionCount
= 1;
61 int MaxClientCount
= 1;
62 int refresh_user_links
= 0;
64 static char buf
[BUFSIZE
];
67 * list of recognized server capabilities. "TS" is not on the list
68 * because all servers that we talk to already do TS, and the kludged
69 * extra argument to "PASS" takes care of checking that. -orabidoo
71 struct CapabilityIndex
*serv_capindex
= NULL
;
72 struct CapabilityIndex
*cli_capindex
= NULL
;
81 unsigned int CAP_KNOCK
;
83 unsigned int CAP_UNKLN
;
84 unsigned int CAP_CLUSTER
;
85 unsigned int CAP_ENCAP
;
87 unsigned int CAP_SERVICE
;
88 unsigned int CAP_RSFNC
;
89 unsigned int CAP_SAVE
;
90 unsigned int CAP_EUID
;
91 unsigned int CAP_EOPMOD
;
93 unsigned int CAP_MLOCK
;
95 unsigned int CLICAP_MULTI_PREFIX
;
96 unsigned int CLICAP_ACCOUNT_NOTIFY
;
97 unsigned int CLICAP_EXTENDED_JOIN
;
98 unsigned int CLICAP_AWAY_NOTIFY
;
99 unsigned int CLICAP_USERHOST_IN_NAMES
;
100 unsigned int CLICAP_CAP_NOTIFY
;
101 unsigned int CLICAP_CHGHOST
;
102 unsigned int CLICAP_ECHO_MESSAGE
;
105 * initialize our builtin capability table. --nenolod
108 init_builtin_capabs(void)
110 serv_capindex
= capability_index_create("server capabilities");
112 /* These two are not set via CAPAB/GCAP keywords. */
113 CAP_CAP
= capability_put_anonymous(serv_capindex
);
114 CAP_TS6
= capability_put_anonymous(serv_capindex
);
116 CAP_QS
= capability_put(serv_capindex
, "QS", NULL
);
117 CAP_EX
= capability_put(serv_capindex
, "EX", NULL
);
118 CAP_CHW
= capability_put(serv_capindex
, "CHW", NULL
);
119 CAP_IE
= capability_put(serv_capindex
, "IE", NULL
);
120 CAP_KLN
= capability_put(serv_capindex
, "KLN", NULL
);
121 CAP_KNOCK
= capability_put(serv_capindex
, "KNOCK", NULL
);
122 CAP_ZIP
= capability_put(serv_capindex
, "ZIP", NULL
);
123 CAP_TB
= capability_put(serv_capindex
, "TB", NULL
);
124 CAP_UNKLN
= capability_put(serv_capindex
, "UNKLN", NULL
);
125 CAP_CLUSTER
= capability_put(serv_capindex
, "CLUSTER", NULL
);
126 CAP_ENCAP
= capability_put(serv_capindex
, "ENCAP", NULL
);
127 CAP_SERVICE
= capability_put(serv_capindex
, "SERVICES", NULL
);
128 CAP_RSFNC
= capability_put(serv_capindex
, "RSFNC", NULL
);
129 CAP_SAVE
= capability_put(serv_capindex
, "SAVE", NULL
);
130 CAP_EUID
= capability_put(serv_capindex
, "EUID", NULL
);
131 CAP_EOPMOD
= capability_put(serv_capindex
, "EOPMOD", NULL
);
132 CAP_BAN
= capability_put(serv_capindex
, "BAN", NULL
);
133 CAP_MLOCK
= capability_put(serv_capindex
, "MLOCK", NULL
);
135 capability_require(serv_capindex
, "QS");
136 capability_require(serv_capindex
, "EX");
137 capability_require(serv_capindex
, "IE");
138 capability_require(serv_capindex
, "ENCAP");
140 cli_capindex
= capability_index_create("client capabilities");
142 CLICAP_MULTI_PREFIX
= capability_put(cli_capindex
, "multi-prefix", NULL
);
143 CLICAP_ACCOUNT_NOTIFY
= capability_put(cli_capindex
, "account-notify", NULL
);
144 CLICAP_EXTENDED_JOIN
= capability_put(cli_capindex
, "extended-join", NULL
);
145 CLICAP_AWAY_NOTIFY
= capability_put(cli_capindex
, "away-notify", NULL
);
146 CLICAP_USERHOST_IN_NAMES
= capability_put(cli_capindex
, "userhost-in-names", NULL
);
147 CLICAP_CAP_NOTIFY
= capability_put(cli_capindex
, "cap-notify", NULL
);
148 CLICAP_CHGHOST
= capability_put(cli_capindex
, "chghost", NULL
);
149 CLICAP_ECHO_MESSAGE
= capability_put(cli_capindex
, "echo-message", NULL
);
152 static CNCB serv_connect_callback
;
153 static CNCB serv_connect_ssl_callback
;
154 static SSL_OPEN_CB serv_connect_ssl_open_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
) && (!ircd_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
;
351 bool name_matched
= false;
352 bool host_matched
= false;
353 bool certfp_failed
= false;
355 s_assert(NULL
!= client_p
);
359 if(!(client_p
->localClient
->passwd
))
362 if(strlen(name
) > HOSTLEN
)
365 RB_DLINK_FOREACH(ptr
, server_conf_list
.head
)
367 struct rb_sockaddr_storage client_addr
;
371 if(ServerConfIllegal(tmp_p
))
374 if(!match(tmp_p
->name
, name
))
379 if(rb_inet_pton_sock(client_p
->sockhost
, (struct sockaddr
*)&client_addr
) <= 0)
380 SET_SS_FAMILY(&client_addr
, AF_UNSPEC
);
382 if((tmp_p
->connect_host
&& match(tmp_p
->connect_host
, client_p
->host
))
383 || (GET_SS_FAMILY(&client_addr
) == GET_SS_FAMILY(&tmp_p
->connect4
)
384 && comp_with_mask_sock((struct sockaddr
*)&client_addr
,
385 (struct sockaddr
*)&tmp_p
->connect4
, 32))
387 || (GET_SS_FAMILY(&client_addr
) == GET_SS_FAMILY(&tmp_p
->connect6
)
388 && comp_with_mask_sock((struct sockaddr
*)&client_addr
,
389 (struct sockaddr
*)&tmp_p
->connect6
, 128))
397 if(ServerConfEncrypted(tmp_p
))
399 encr
= rb_crypt(client_p
->localClient
->passwd
,
401 if(encr
!= NULL
&& !strcmp(tmp_p
->passwd
, encr
))
409 else if(strcmp(tmp_p
->passwd
, client_p
->localClient
->passwd
))
415 if(!client_p
->certfp
|| rb_strcasecmp(tmp_p
->certfp
, client_p
->certfp
) != 0) {
416 certfp_failed
= true;
428 /* return the most specific error */
431 else if(host_matched
)
433 else if(name_matched
)
439 if(ServerConfSSL(server_p
) && client_p
->localClient
->ssl_ctl
== NULL
)
444 attach_server_conf(client_p
, server_p
);
446 /* clear ZIP/TB if they support but we dont want them */
448 if(!ServerConfCompressed(server_p
))
450 ClearCap(client_p
, CAP_ZIP
);
452 if(!ServerConfTb(server_p
))
453 ClearCap(client_p
, CAP_TB
);
461 * inputs - Client pointer to send to
462 * - int flag of capabilities that this server has
464 * side effects - send the CAPAB line to a server -orabidoo
467 send_capabilities(struct Client
*client_p
, unsigned int cap_can_send
)
469 sendto_one(client_p
, "CAPAB :%s", capability_index_list(serv_capindex
, cap_can_send
));
473 burst_ban(struct Client
*client_p
)
476 struct ConfItem
*aconf
;
477 const char *type
, *oper
;
478 /* +5 for !,@,{,} and null */
479 char operbuf
[NICKLEN
+ USERLEN
+ HOSTLEN
+ HOSTLEN
+ 5];
483 melen
= strlen(me
.name
);
484 RB_DLINK_FOREACH(ptr
, prop_bans
.head
)
488 /* Skip expired stuff. */
489 if(aconf
->lifetime
< rb_current_time())
491 switch(aconf
->status
& ~CONF_ILLEGAL
)
493 case CONF_KILL
: type
= "K"; break;
494 case CONF_DLINE
: type
= "D"; break;
495 case CONF_XLINE
: type
= "X"; break;
496 case CONF_RESV_NICK
: type
= "R"; break;
497 case CONF_RESV_CHANNEL
: type
= "R"; break;
501 oper
= aconf
->info
.oper
;
502 if(aconf
->flags
& CONF_FLAGS_MYOPER
)
504 /* Our operator{} names may not be meaningful
505 * to other servers, so rewrite to our server
508 rb_strlcpy(operbuf
, aconf
->info
.oper
, sizeof buf
);
509 p
= strrchr(operbuf
, '{');
511 operbuf
+ sizeof operbuf
- p
> (ptrdiff_t)(melen
+ 2))
513 memcpy(p
+ 1, me
.name
, melen
);
519 sendto_one(client_p
, ":%s BAN %s %s %s %lu %d %d %s :%s%s%s",
522 aconf
->user
? aconf
->user
: "*", aconf
->host
,
523 (unsigned long)aconf
->created
,
524 (int)(aconf
->hold
- aconf
->created
),
525 (int)(aconf
->lifetime
- aconf
->created
),
528 aconf
->spasswd
? "|" : "",
529 aconf
->spasswd
? aconf
->spasswd
: "");
535 * input - client to burst to, channel name, list to burst, mode flag
537 * side effects - client is sent a list of +b, +e, or +I modes
540 burst_modes_TS6(struct Client
*client_p
, struct Channel
*chptr
,
541 rb_dlink_list
*list
, char flag
)
550 cur_len
= mlen
= sprintf(buf
, ":%s BMASK %ld %s %c :",
551 me
.id
, (long) chptr
->channelts
, chptr
->chname
, flag
);
554 RB_DLINK_FOREACH(ptr
, list
->head
)
558 tlen
= strlen(banptr
->banstr
) + (banptr
->forward
? strlen(banptr
->forward
) + 1 : 0) + 1;
561 if(cur_len
+ tlen
> BUFSIZE
- 3)
563 /* the one we're trying to send doesnt fit at all! */
570 /* chop off trailing space and send.. */
572 sendto_one(client_p
, "%s", buf
);
578 sprintf(t
, "%s$%s ", banptr
->banstr
, banptr
->forward
);
580 sprintf(t
, "%s ", banptr
->banstr
);
585 /* cant ever exit the loop above without having modified buf,
586 * chop off trailing space and send.
589 sendto_one(client_p
, "%s", buf
);
595 * inputs - client (server) to send nick towards
596 * - client to send nick for
598 * side effects - NICK message is sent towards given client_p
601 burst_TS6(struct Client
*client_p
)
604 struct Client
*target_p
;
605 struct Channel
*chptr
;
606 struct membership
*msptr
;
607 hook_data_client hclientinfo
;
608 hook_data_channel hchaninfo
;
615 hclientinfo
.client
= hchaninfo
.client
= client_p
;
617 RB_DLINK_FOREACH(ptr
, global_client_list
.head
)
619 target_p
= ptr
->data
;
621 if(!IsPerson(target_p
))
624 send_umode(NULL
, target_p
, 0, ubuf
);
631 if(IsCapable(client_p
, CAP_EUID
))
632 sendto_one(client_p
, ":%s EUID %s %d %ld %s %s %s %s %s %s %s :%s",
633 target_p
->servptr
->id
, target_p
->name
,
634 target_p
->hopcount
+ 1,
635 (long) target_p
->tsinfo
, ubuf
,
636 target_p
->username
, target_p
->host
,
637 IsIPSpoof(target_p
) ? "0" : target_p
->sockhost
,
639 IsDynSpoof(target_p
) ? target_p
->orighost
: "*",
640 EmptyString(target_p
->user
->suser
) ? "*" : target_p
->user
->suser
,
643 sendto_one(client_p
, ":%s UID %s %d %ld %s %s %s %s %s :%s",
644 target_p
->servptr
->id
, target_p
->name
,
645 target_p
->hopcount
+ 1,
646 (long) target_p
->tsinfo
, ubuf
,
647 target_p
->username
, target_p
->host
,
648 IsIPSpoof(target_p
) ? "0" : target_p
->sockhost
,
649 target_p
->id
, target_p
->info
);
651 if(!EmptyString(target_p
->certfp
))
652 sendto_one(client_p
, ":%s ENCAP * CERTFP :%s",
653 use_id(target_p
), target_p
->certfp
);
655 if(!IsCapable(client_p
, CAP_EUID
))
657 if(IsDynSpoof(target_p
))
658 sendto_one(client_p
, ":%s ENCAP * REALHOST %s",
659 use_id(target_p
), target_p
->orighost
);
660 if(!EmptyString(target_p
->user
->suser
))
661 sendto_one(client_p
, ":%s ENCAP * LOGIN %s",
662 use_id(target_p
), target_p
->user
->suser
);
665 if(ConfigFileEntry
.burst_away
&& !EmptyString(target_p
->user
->away
))
666 sendto_one(client_p
, ":%s AWAY :%s",
668 target_p
->user
->away
);
670 hclientinfo
.target
= target_p
;
671 call_hook(h_burst_client
, &hclientinfo
);
674 RB_DLINK_FOREACH(ptr
, global_channel_list
.head
)
678 if(*chptr
->chname
!= '#')
681 cur_len
= mlen
= sprintf(buf
, ":%s SJOIN %ld %s %s :", me
.id
,
682 (long) chptr
->channelts
, chptr
->chname
,
683 channel_modes(chptr
, client_p
));
687 RB_DLINK_FOREACH(uptr
, chptr
->members
.head
)
691 tlen
= strlen(use_id(msptr
->client_p
)) + 1;
697 if(cur_len
+ tlen
>= BUFSIZE
- 3)
700 sendto_one(client_p
, "%s", buf
);
705 sprintf(t
, "%s%s ", find_channel_status(msptr
, 1),
706 use_id(msptr
->client_p
));
712 if (rb_dlink_list_length(&chptr
->members
) > 0)
714 /* remove trailing space */
717 sendto_one(client_p
, "%s", buf
);
719 if(rb_dlink_list_length(&chptr
->banlist
) > 0)
720 burst_modes_TS6(client_p
, chptr
, &chptr
->banlist
, 'b');
722 if(IsCapable(client_p
, CAP_EX
) &&
723 rb_dlink_list_length(&chptr
->exceptlist
) > 0)
724 burst_modes_TS6(client_p
, chptr
, &chptr
->exceptlist
, 'e');
726 if(IsCapable(client_p
, CAP_IE
) &&
727 rb_dlink_list_length(&chptr
->invexlist
) > 0)
728 burst_modes_TS6(client_p
, chptr
, &chptr
->invexlist
, 'I');
730 if(rb_dlink_list_length(&chptr
->quietlist
) > 0)
731 burst_modes_TS6(client_p
, chptr
, &chptr
->quietlist
, 'q');
733 if(IsCapable(client_p
, CAP_TB
) && chptr
->topic
!= NULL
)
734 sendto_one(client_p
, ":%s TB %s %ld %s%s:%s",
735 me
.id
, chptr
->chname
, (long) chptr
->topic_time
,
736 ConfigChannel
.burst_topicwho
? chptr
->topic_info
: "",
737 ConfigChannel
.burst_topicwho
? " " : "",
740 if(IsCapable(client_p
, CAP_MLOCK
))
741 sendto_one(client_p
, ":%s MLOCK %ld %s :%s",
742 me
.id
, (long) chptr
->channelts
, chptr
->chname
,
743 EmptyString(chptr
->mode_lock
) ? "" : chptr
->mode_lock
);
745 hchaninfo
.chptr
= chptr
;
746 call_hook(h_burst_channel
, &hchaninfo
);
749 hclientinfo
.target
= NULL
;
750 call_hook(h_burst_finished
, &hclientinfo
);
754 * show_capabilities - show current server capabilities
756 * inputs - pointer to an struct Client
757 * output - pointer to static string
758 * side effects - build up string representing capabilities of server listed
761 show_capabilities(struct Client
*target_p
)
763 static char msgbuf
[BUFSIZE
];
768 rb_strlcpy(msgbuf
, " TS6", sizeof(msgbuf
));
771 rb_strlcat(msgbuf
, " SSL", sizeof(msgbuf
));
773 if(!IsServer(target_p
) || !target_p
->serv
->caps
) /* short circuit if no caps */
776 rb_strlcat(msgbuf
, " ", sizeof(msgbuf
));
777 rb_strlcat(msgbuf
, capability_index_list(serv_capindex
, target_p
->serv
->caps
), sizeof(msgbuf
));
785 * inputs - pointer to a struct Client
790 server_estab(struct Client
*client_p
)
792 struct Client
*target_p
;
793 struct server_conf
*server_p
;
794 hook_data_client hdata
;
797 char note
[HOSTLEN
+ 15];
799 s_assert(NULL
!= client_p
);
803 host
= client_p
->name
;
805 if((server_p
= client_p
->localClient
->att_sconf
) == NULL
)
807 /* This shouldn't happen, better tell the ops... -A1kmm */
808 sendto_realops_snomask(SNO_GENERAL
, is_remote_connect(client_p
) ? L_NETWIDE
: L_ALL
,
809 "Warning: Lost connect{} block for server %s!", host
);
810 return exit_client(client_p
, client_p
, client_p
, "Lost connect{} block!");
813 /* We shouldn't have to check this, it should already done before
814 * server_estab is called. -A1kmm
816 if(client_p
->localClient
->passwd
)
818 memset(client_p
->localClient
->passwd
, 0, strlen(client_p
->localClient
->passwd
));
819 rb_free(client_p
->localClient
->passwd
);
820 client_p
->localClient
->passwd
= NULL
;
823 /* Its got identd , since its a server */
826 if(IsUnknown(client_p
))
828 /* the server may be linking based on certificate fingerprint now. --nenolod */
829 sendto_one(client_p
, "PASS %s TS %d :%s",
830 EmptyString(server_p
->spasswd
) ? "*" : server_p
->spasswd
, TS_CURRENT
, me
.id
);
832 /* pass info to new server */
833 send_capabilities(client_p
, default_server_capabs
834 | (ServerConfCompressed(server_p
) ? CAP_ZIP_SUPPORTED
: 0)
835 | (ServerConfTb(server_p
) ? CAP_TB
: 0));
837 sendto_one(client_p
, "SERVER %s 1 :%s%s",
839 ConfigServerHide
.hidden
? "(H) " : "",
840 (me
.info
[0]) ? (me
.info
) : "IRCers United");
843 if(!rb_set_buffers(client_p
->localClient
->F
, READBUF_SIZE
))
844 ilog_error("rb_set_buffers failed for server");
846 /* Enable compression now */
847 if(IsCapable(client_p
, CAP_ZIP
))
849 start_zlib_session(client_p
);
851 sendto_one(client_p
, "SVINFO %d %d 0 :%ld", TS_CURRENT
, TS_MIN
, (long int)rb_current_time());
853 client_p
->servptr
= &me
;
855 if(IsAnyDead(client_p
))
856 return CLIENT_EXITED
;
860 rb_dlinkAdd(client_p
, &client_p
->lnode
, &me
.serv
->servers
);
861 rb_dlinkMoveNode(&client_p
->localClient
->tnode
, &unknown_list
, &serv_list
);
862 rb_dlinkAddTailAlloc(client_p
, &global_serv_list
);
865 add_to_id_hash(client_p
->id
, client_p
);
867 add_to_client_hash(client_p
->name
, client_p
);
868 /* doesnt duplicate client_p->serv if allocated this struct already */
869 make_server(client_p
);
871 client_p
->serv
->caps
= client_p
->localClient
->caps
;
873 if(client_p
->localClient
->fullcaps
)
875 client_p
->serv
->fullcaps
= rb_strdup(client_p
->localClient
->fullcaps
);
876 rb_free(client_p
->localClient
->fullcaps
);
877 client_p
->localClient
->fullcaps
= NULL
;
880 client_p
->serv
->nameinfo
= scache_connect(client_p
->name
, client_p
->info
, IsHidden(client_p
));
881 client_p
->localClient
->firsttime
= rb_current_time();
882 /* fixing eob timings.. -gnp */
884 if((rb_dlink_list_length(&lclient_list
) + rb_dlink_list_length(&serv_list
)) >
885 (unsigned long)MaxConnectionCount
)
886 MaxConnectionCount
= rb_dlink_list_length(&lclient_list
) +
887 rb_dlink_list_length(&serv_list
);
889 /* Show the real host/IP to admins */
890 sendto_realops_snomask(SNO_GENERAL
, L_ALL
,
891 "Link with %s established: (%s) link",
893 show_capabilities(client_p
));
895 ilog(L_SERVER
, "Link with %s established: (%s) link",
896 log_client_name(client_p
, SHOW_IP
), show_capabilities(client_p
));
899 hdata
.target
= client_p
;
900 call_hook(h_server_introduced
, &hdata
);
902 snprintf(note
, sizeof(note
), "Server: %s", client_p
->name
);
903 rb_note(client_p
->localClient
->F
, note
);
906 ** Old sendto_serv_but_one() call removed because we now
907 ** need to send different names to different servers
908 ** (domain name matching) Send new server to other servers.
910 RB_DLINK_FOREACH(ptr
, serv_list
.head
)
912 target_p
= ptr
->data
;
914 if(target_p
== client_p
)
917 if(has_id(target_p
) && has_id(client_p
))
919 sendto_one(target_p
, ":%s SID %s 2 %s :%s%s",
920 me
.id
, client_p
->name
, client_p
->id
,
921 IsHidden(client_p
) ? "(H) " : "", client_p
->info
);
923 if(!EmptyString(client_p
->serv
->fullcaps
))
924 sendto_one(target_p
, ":%s ENCAP * GCAP :%s",
925 client_p
->id
, client_p
->serv
->fullcaps
);
929 sendto_one(target_p
, ":%s SERVER %s 2 :%s%s",
930 me
.name
, client_p
->name
,
931 IsHidden(client_p
) ? "(H) " : "", client_p
->info
);
933 if(!EmptyString(client_p
->serv
->fullcaps
))
934 sendto_one(target_p
, ":%s ENCAP * GCAP :%s",
935 client_p
->name
, client_p
->serv
->fullcaps
);
940 ** Pass on my client information to the new server
942 ** First, pass only servers (idea is that if the link gets
943 ** cancelled beacause the server was already there,
944 ** there are no NICK's to be cancelled...). Of course,
945 ** if cancellation occurs, all this info is sent anyway,
946 ** and I guess the link dies when a read is attempted...? --msa
948 ** Note: Link cancellation to occur at this point means
949 ** that at least two servers from my fragment are building
950 ** up connection this other fragment at the same time, it's
951 ** a race condition, not the normal way of operation...
953 ** ALSO NOTE: using the get_client_name for server names--
954 ** see previous *WARNING*!!! (Also, original inpath
957 RB_DLINK_FOREACH(ptr
, global_serv_list
.head
)
959 target_p
= ptr
->data
;
961 /* target_p->from == target_p for target_p == client_p */
962 if(IsMe(target_p
) || target_p
->from
== client_p
)
965 /* presumption, if target has an id, so does its uplink */
966 if(has_id(client_p
) && has_id(target_p
))
967 sendto_one(client_p
, ":%s SID %s %d %s :%s%s",
968 target_p
->servptr
->id
, target_p
->name
,
969 target_p
->hopcount
+ 1, target_p
->id
,
970 IsHidden(target_p
) ? "(H) " : "", target_p
->info
);
972 sendto_one(client_p
, ":%s SERVER %s %d :%s%s",
973 target_p
->servptr
->name
,
974 target_p
->name
, target_p
->hopcount
+ 1,
975 IsHidden(target_p
) ? "(H) " : "", target_p
->info
);
977 if(!EmptyString(target_p
->serv
->fullcaps
))
978 sendto_one(client_p
, ":%s ENCAP * GCAP :%s",
979 get_id(target_p
, client_p
),
980 target_p
->serv
->fullcaps
);
983 if(IsCapable(client_p
, CAP_BAN
))
988 /* Always send a PING after connect burst is done */
989 sendto_one(client_p
, "PING :%s", get_id(&me
, client_p
));
991 free_pre_client(client_p
);
993 send_pop_queue(client_p
);
999 * New server connection code
1000 * Based upon the stuff floating about in s_bsd.c
1005 * serv_connect() - initiate a server connection
1007 * inputs - pointer to conf
1008 * - pointer to client doing the connet
1012 * This code initiates a connection to a server. It first checks to make
1013 * sure the given server exists. If this is the case, it creates a socket,
1014 * creates a client, saves the socket information in the client, and
1015 * initiates a connection to the server through rb_connect_tcp(). The
1016 * completion of this goes through serv_completed_connection().
1018 * We return 1 if the connection is attempted, since we don't know whether
1019 * it suceeded or not, and 0 if it fails in here somewhere.
1022 serv_connect(struct server_conf
*server_p
, struct Client
*by
)
1024 struct Client
*client_p
;
1025 struct rb_sockaddr_storage sa_connect
;
1026 struct rb_sockaddr_storage sa_bind
;
1027 char note
[HOSTLEN
+ 10];
1030 s_assert(server_p
!= NULL
);
1031 if(server_p
== NULL
)
1035 if(server_p
->aftype
!= AF_UNSPEC
1036 && GET_SS_FAMILY(&server_p
->connect4
) == AF_INET
1037 && GET_SS_FAMILY(&server_p
->connect6
) == AF_INET6
)
1041 sa_connect
= server_p
->connect4
;
1042 sa_bind
= server_p
->bind4
;
1046 sa_connect
= server_p
->connect6
;
1047 sa_bind
= server_p
->bind6
;
1050 else if(server_p
->aftype
== AF_INET
|| GET_SS_FAMILY(&server_p
->connect4
) == AF_INET
)
1053 sa_connect
= server_p
->connect4
;
1054 sa_bind
= server_p
->bind4
;
1057 else if(server_p
->aftype
== AF_INET6
|| GET_SS_FAMILY(&server_p
->connect6
) == AF_INET6
)
1059 sa_connect
= server_p
->connect6
;
1060 sa_bind
= server_p
->bind6
;
1066 rb_inet_ntop_sock((struct sockaddr
*)&sa_connect
, buf
, sizeof(buf
));
1067 ilog(L_SERVER
, "Connect to *[%s] @%s", server_p
->name
, buf
);
1070 * Make sure this server isn't already connected
1072 if((client_p
= find_server(NULL
, server_p
->name
)))
1074 sendto_realops_snomask(SNO_GENERAL
, L_ALL
,
1075 "Server %s already present from %s",
1076 server_p
->name
, client_p
->name
);
1077 if(by
&& IsPerson(by
) && !MyClient(by
))
1078 sendto_one_notice(by
, ":Server %s already present from %s",
1079 server_p
->name
, client_p
->name
);
1083 /* create a socket for the server connection */
1084 if(GET_SS_FAMILY(&sa_connect
) == AF_UNSPEC
)
1086 ilog_error("unspecified socket address family");
1089 else if((F
= rb_socket(GET_SS_FAMILY(&sa_connect
), SOCK_STREAM
, 0, NULL
)) == NULL
)
1091 ilog_error("opening a stream socket");
1095 /* servernames are always guaranteed under HOSTLEN chars */
1096 snprintf(note
, sizeof(note
), "Server: %s", server_p
->name
);
1099 /* Create a local client */
1100 client_p
= make_client(NULL
);
1102 /* Copy in the server, hostname, fd */
1103 rb_strlcpy(client_p
->name
, server_p
->name
, sizeof(client_p
->name
));
1104 if(server_p
->connect_host
)
1105 rb_strlcpy(client_p
->host
, server_p
->connect_host
, sizeof(client_p
->host
));
1107 rb_strlcpy(client_p
->host
, buf
, sizeof(client_p
->host
));
1108 rb_strlcpy(client_p
->sockhost
, buf
, sizeof(client_p
->sockhost
));
1109 client_p
->localClient
->F
= F
;
1110 /* shove the port number into the sockaddr */
1111 SET_SS_PORT(&sa_connect
, htons(server_p
->port
));
1114 * Set up the initial server evilness, ripped straight from
1115 * connect_server(), so don't blame me for it being evil.
1119 if(!rb_set_buffers(client_p
->localClient
->F
, READBUF_SIZE
))
1121 ilog_error("setting the buffer size for a server connection");
1125 * Attach config entries to client here rather than in
1126 * serv_connect_callback(). This to avoid null pointer references.
1128 attach_server_conf(client_p
, server_p
);
1131 * at this point we have a connection in progress and C/N lines
1132 * attached to the client, the socket info should be saved in the
1133 * client and it should either be resolved or have a valid address.
1135 * The socket has been connected or connect is in progress.
1137 make_server(client_p
);
1138 if(by
&& IsClient(by
))
1139 strcpy(client_p
->serv
->by
, by
->name
);
1141 strcpy(client_p
->serv
->by
, "AutoConn.");
1143 SetConnecting(client_p
);
1144 rb_dlinkAddTail(client_p
, &client_p
->node
, &global_client_list
);
1146 if(GET_SS_FAMILY(&sa_bind
) == AF_UNSPEC
)
1148 if(GET_SS_FAMILY(&sa_connect
) == GET_SS_FAMILY(&ServerInfo
.bind4
))
1149 sa_bind
= ServerInfo
.bind4
;
1151 if(GET_SS_FAMILY(&sa_connect
) == GET_SS_FAMILY(&ServerInfo
.bind6
))
1152 sa_bind
= ServerInfo
.bind6
;
1156 rb_connect_tcp(client_p
->localClient
->F
,
1157 (struct sockaddr
*)&sa_connect
,
1158 GET_SS_FAMILY(&sa_bind
) == AF_UNSPEC
? NULL
: (struct sockaddr
*)&sa_bind
,
1159 ServerConfSSL(server_p
) ? serv_connect_ssl_callback
: serv_connect_callback
,
1160 client_p
, ConfigFileEntry
.connect_timeout
);
1165 serv_connect_ssl_callback(rb_fde_t
*F
, int status
, void *data
)
1167 struct Client
*client_p
= data
;
1169 rb_connect_sockaddr(F
, (struct sockaddr
*)&client_p
->localClient
->ip
, sizeof(client_p
->localClient
->ip
));
1172 /* Print error message, just like non-SSL. */
1173 serv_connect_callback(F
, status
, data
);
1176 if(rb_socketpair(AF_UNIX
, SOCK_STREAM
, 0, &xF
[0], &xF
[1], "Outgoing ssld connection") == -1)
1178 ilog_error("rb_socketpair failed for server");
1179 serv_connect_callback(F
, RB_ERROR
, data
);
1183 client_p
->localClient
->F
= xF
[0];
1184 client_p
->localClient
->ssl_callback
= serv_connect_ssl_open_callback
;
1186 client_p
->localClient
->ssl_ctl
= start_ssld_connect(F
, xF
[1], connid_get(client_p
));
1187 if(!client_p
->localClient
->ssl_ctl
)
1189 serv_connect_callback(client_p
->localClient
->F
, RB_ERROR
, data
);
1196 serv_connect_ssl_open_callback(struct Client
*client_p
, int status
)
1198 serv_connect_callback(client_p
->localClient
->F
, status
, client_p
);
1199 return 1; /* suppress default exit_client handler for status != RB_OK */
1203 * serv_connect_callback() - complete a server connection.
1205 * This routine is called after the server connection attempt has
1206 * completed. If unsucessful, an error is sent to ops and the client
1207 * is closed. If sucessful, it goes through the initialisation/check
1208 * procedures, the capabilities are sent, and the socket is then
1209 * marked for reading.
1212 serv_connect_callback(rb_fde_t
*F
, int status
, void *data
)
1214 struct Client
*client_p
= data
;
1215 struct server_conf
*server_p
;
1218 /* First, make sure its a real client! */
1219 s_assert(client_p
!= NULL
);
1220 s_assert(client_p
->localClient
->F
== F
);
1222 if(client_p
== NULL
)
1225 /* while we were waiting for the callback, its possible this already
1228 if(find_server(NULL
, client_p
->name
) != NULL
)
1230 exit_client(client_p
, client_p
, &me
, "Server Exists");
1234 if(client_p
->localClient
->ssl_ctl
== NULL
)
1235 rb_connect_sockaddr(F
, (struct sockaddr
*)&client_p
->localClient
->ip
, sizeof(client_p
->localClient
->ip
));
1237 /* Check the status */
1240 /* COMM_ERR_TIMEOUT wont have an errno associated with it,
1241 * the others will.. --fl
1243 if(status
== RB_ERR_TIMEOUT
|| status
== RB_ERROR_SSL
)
1245 sendto_realops_snomask(SNO_GENERAL
, is_remote_connect(client_p
) ? L_NETWIDE
: L_ALL
,
1246 "Error connecting to %s[%s]: %s",
1250 ilog(L_SERVER
, "Error connecting to %s[%s]: %s",
1251 client_p
->name
, client_p
->sockhost
,
1256 errstr
= strerror(rb_get_sockerr(F
));
1257 sendto_realops_snomask(SNO_GENERAL
, is_remote_connect(client_p
) ? L_NETWIDE
: L_ALL
,
1258 "Error connecting to %s[%s]: %s (%s)",
1261 rb_errstr(status
), errstr
);
1262 ilog(L_SERVER
, "Error connecting to %s[%s]: %s (%s)",
1263 client_p
->name
, client_p
->sockhost
,
1264 rb_errstr(status
), errstr
);
1267 exit_client(client_p
, client_p
, &me
, rb_errstr(status
));
1271 /* COMM_OK, so continue the connection procedure */
1272 /* Get the C/N lines */
1273 if((server_p
= client_p
->localClient
->att_sconf
) == NULL
)
1275 sendto_realops_snomask(SNO_GENERAL
, is_remote_connect(client_p
) ? L_NETWIDE
: L_ALL
, "Lost connect{} block for %s",
1277 exit_client(client_p
, client_p
, &me
, "Lost connect{} block");
1281 if(server_p
->certfp
&& (!client_p
->certfp
|| rb_strcasecmp(server_p
->certfp
, client_p
->certfp
) != 0))
1283 sendto_realops_snomask(SNO_GENERAL
, is_remote_connect(client_p
) ? L_NETWIDE
: L_ALL
,
1284 "Connection to %s has invalid certificate fingerprint %s",
1285 client_p
->name
, client_p
->certfp
);
1286 ilog(L_SERVER
, "Access denied, invalid certificate fingerprint %s from %s",
1287 client_p
->certfp
, log_client_name(client_p
, SHOW_IP
));
1289 exit_client(client_p
, client_p
, &me
, "Invalid fingerprint.");
1293 /* Next, send the initial handshake */
1294 SetHandshake(client_p
);
1296 /* the server may be linking based on certificate fingerprint now. --nenolod */
1297 sendto_one(client_p
, "PASS %s TS %d :%s",
1298 EmptyString(server_p
->spasswd
) ? "*" : server_p
->spasswd
, TS_CURRENT
, me
.id
);
1300 /* pass my info to the new server */
1301 send_capabilities(client_p
, default_server_capabs
1302 | (ServerConfCompressed(server_p
) ? CAP_ZIP_SUPPORTED
: 0)
1303 | (ServerConfTb(server_p
) ? CAP_TB
: 0));
1305 sendto_one(client_p
, "SERVER %s 1 :%s%s",
1307 ConfigServerHide
.hidden
? "(H) " : "", me
.info
);
1310 * If we've been marked dead because a send failed, just exit
1311 * here now and save everyone the trouble of us ever existing.
1313 if(IsAnyDead(client_p
))
1315 sendto_realops_snomask(SNO_GENERAL
, is_remote_connect(client_p
) ? L_NETWIDE
: L_ALL
,
1316 "%s went dead during handshake", client_p
->name
);
1317 exit_client(client_p
, client_p
, &me
, "Went dead during handshake");
1321 /* don't move to serv_list yet -- we haven't sent a burst! */
1323 /* If we get here, we're ok, so lets start reading some data */
1324 read_packet(F
, client_p
);