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
;
156 * hunt_server - Do the basic thing in delivering the message (command)
157 * across the relays to the specific server (server) for
160 * Note: The command is a format string and *MUST* be
161 * of prefixed style (e.g. ":%s COMMAND %s ...").
162 * Command can have only max 8 parameters.
164 * server parv[server] is the parameter identifying the
168 * parv[server] is replaced with the pointer to the
169 * real servername from the matched client (I'm lazy
172 * returns: (see #defines)
175 hunt_server(struct Client
*client_p
, struct Client
*source_p
,
176 const char *command
, int server
, int parc
, const char *parv
[])
178 struct Client
*target_p
;
185 * Assume it's me, if no server
187 if(parc
<= server
|| EmptyString(parv
[server
]) ||
188 match(parv
[server
], me
.name
) || (strcmp(parv
[server
], me
.id
) == 0))
189 return (HUNTED_ISME
);
191 new = LOCAL_COPY(parv
[server
]);
194 * These are to pickup matches that would cause the following
195 * message to go in the wrong direction while doing quick fast
196 * non-matching lookups.
198 if(MyClient(source_p
))
199 target_p
= find_named_client(new);
201 target_p
= find_client(new);
204 if(target_p
->from
== source_p
->from
&& !MyConnect(target_p
))
208 wilds
= (strchr(new, '?') || strchr(new, '*'));
211 * Again, if there are no wild cards involved in the server
212 * name, use the hash lookup
214 if(!target_p
&& wilds
)
216 RB_DLINK_FOREACH(ptr
, global_serv_list
.head
)
218 if(match(new, ((struct Client
*) (ptr
->data
))->name
))
220 target_p
= ptr
->data
;
226 if(target_p
&& !IsRegistered(target_p
))
231 if(IsMe(target_p
) || MyClient(target_p
))
235 parv
[server
] = get_id(target_p
, target_p
);
237 sendto_one(target_p
, command
, get_id(source_p
, target_p
),
238 parv
[1], parv
[2], parv
[3], parv
[4], parv
[5], parv
[6], parv
[7], parv
[8]);
240 return (HUNTED_PASS
);
243 if(MyClient(source_p
) || !IsDigit(parv
[server
][0]))
244 sendto_one_numeric(source_p
, ERR_NOSUCHSERVER
,
245 form_str(ERR_NOSUCHSERVER
), parv
[server
]);
246 return (HUNTED_NOSUCH
);
250 * try_connections - scan through configuration and try new connections.
251 * Returns the calendar time when the next call to this
252 * function should be made latest. (No harm done if this
253 * is called earlier or later...)
256 try_connections(void *unused
)
258 struct Client
*client_p
;
259 struct server_conf
*server_p
= NULL
;
260 struct server_conf
*tmp_p
;
263 bool connecting
= false;
267 RB_DLINK_FOREACH(ptr
, server_conf_list
.head
)
271 if(ServerConfIllegal(tmp_p
) || !ServerConfAutoconn(tmp_p
))
274 /* don't allow ssl connections if ssl isn't setup */
275 if(ServerConfSSL(tmp_p
) && (!ircd_ssl_ok
|| !get_ssld_count()))
278 cltmp
= tmp_p
->class;
281 * Skip this entry if the use of it is still on hold until
282 * future. Otherwise handle this entry (and set it on hold
283 * until next time). Will reset only hold times, if already
284 * made one successfull connection... [this algorithm is
285 * a bit fuzzy... -- msa >;) ]
287 if(tmp_p
->hold
> rb_current_time())
289 if(next
> tmp_p
->hold
|| next
== 0)
294 confrq
= get_con_freq(cltmp
);
295 tmp_p
->hold
= rb_current_time() + confrq
;
298 * Found a CONNECT config with port specified, scan clients
299 * and see if this server is already connected?
301 client_p
= find_server(NULL
, tmp_p
->name
);
303 if(!client_p
&& (CurrUsers(cltmp
) < MaxUsers(cltmp
)) && !connecting
)
307 /* We connect only one at time... */
311 if((next
> tmp_p
->hold
) || (next
== 0))
315 /* TODO: change this to set active flag to 0 when added to event! --Habeeb */
316 if(GlobalSetOptions
.autoconn
== 0)
322 /* move this connect entry to end.. */
323 rb_dlinkDelete(&server_p
->node
, &server_conf_list
);
324 rb_dlinkAddTail(server_p
, &server_p
->node
, &server_conf_list
);
327 * We used to only print this if serv_connect() actually
328 * suceeded, but since rb_tcp_connect() can call the callback
329 * immediately if there is an error, we were getting error messages
330 * in the wrong order. SO, we just print out the activated line,
331 * and let serv_connect() / serv_connect_callback() print an
332 * error afterwards if it fails.
335 sendto_realops_snomask(SNO_GENERAL
, L_ALL
,
336 "Connection to %s activated",
339 serv_connect(server_p
, 0);
343 check_server(const char *name
, struct Client
*client_p
)
345 struct server_conf
*server_p
= NULL
;
346 struct server_conf
*tmp_p
;
350 bool name_matched
= false;
351 bool host_matched
= false;
352 bool certfp_failed
= false;
354 s_assert(NULL
!= client_p
);
358 if(!(client_p
->localClient
->passwd
))
361 if(strlen(name
) > HOSTLEN
)
364 RB_DLINK_FOREACH(ptr
, server_conf_list
.head
)
368 if(ServerConfIllegal(tmp_p
))
371 if(!match(tmp_p
->name
, name
))
376 /* XXX: Fix me for IPv6 */
377 /* XXX sockhost is the IPv4 ip as a string */
378 if(match(tmp_p
->host
, client_p
->host
) ||
379 match(tmp_p
->host
, client_p
->sockhost
))
385 if(ServerConfEncrypted(tmp_p
))
387 encr
= rb_crypt(client_p
->localClient
->passwd
,
389 if(encr
!= NULL
&& !strcmp(tmp_p
->passwd
, encr
))
397 else if(strcmp(tmp_p
->passwd
, client_p
->localClient
->passwd
))
403 if(!client_p
->certfp
|| rb_strcasecmp(tmp_p
->certfp
, client_p
->certfp
) != 0) {
404 certfp_failed
= true;
416 /* return the most specific error */
419 else if(host_matched
)
421 else if(name_matched
)
427 if(ServerConfSSL(server_p
) && client_p
->localClient
->ssl_ctl
== NULL
)
432 attach_server_conf(client_p
, server_p
);
434 /* clear ZIP/TB if they support but we dont want them */
436 if(!ServerConfCompressed(server_p
))
438 ClearCap(client_p
, CAP_ZIP
);
440 if(!ServerConfTb(server_p
))
441 ClearCap(client_p
, CAP_TB
);
449 * inputs - Client pointer to send to
450 * - int flag of capabilities that this server has
452 * side effects - send the CAPAB line to a server -orabidoo
455 send_capabilities(struct Client
*client_p
, unsigned int cap_can_send
)
457 sendto_one(client_p
, "CAPAB :%s", capability_index_list(serv_capindex
, cap_can_send
));
461 burst_ban(struct Client
*client_p
)
464 struct ConfItem
*aconf
;
465 const char *type
, *oper
;
466 /* +5 for !,@,{,} and null */
467 char operbuf
[NICKLEN
+ USERLEN
+ HOSTLEN
+ HOSTLEN
+ 5];
471 melen
= strlen(me
.name
);
472 RB_DLINK_FOREACH(ptr
, prop_bans
.head
)
476 /* Skip expired stuff. */
477 if(aconf
->lifetime
< rb_current_time())
479 switch(aconf
->status
& ~CONF_ILLEGAL
)
481 case CONF_KILL
: type
= "K"; break;
482 case CONF_DLINE
: type
= "D"; break;
483 case CONF_XLINE
: type
= "X"; break;
484 case CONF_RESV_NICK
: type
= "R"; break;
485 case CONF_RESV_CHANNEL
: type
= "R"; break;
489 oper
= aconf
->info
.oper
;
490 if(aconf
->flags
& CONF_FLAGS_MYOPER
)
492 /* Our operator{} names may not be meaningful
493 * to other servers, so rewrite to our server
496 rb_strlcpy(operbuf
, aconf
->info
.oper
, sizeof buf
);
497 p
= strrchr(operbuf
, '{');
499 operbuf
+ sizeof operbuf
- p
> (ptrdiff_t)(melen
+ 2))
501 memcpy(p
+ 1, me
.name
, melen
);
507 sendto_one(client_p
, ":%s BAN %s %s %s %lu %d %d %s :%s%s%s",
510 aconf
->user
? aconf
->user
: "*", aconf
->host
,
511 (unsigned long)aconf
->created
,
512 (int)(aconf
->hold
- aconf
->created
),
513 (int)(aconf
->lifetime
- aconf
->created
),
516 aconf
->spasswd
? "|" : "",
517 aconf
->spasswd
? aconf
->spasswd
: "");
523 * input - client to burst to, channel name, list to burst, mode flag
525 * side effects - client is sent a list of +b, +e, or +I modes
528 burst_modes_TS6(struct Client
*client_p
, struct Channel
*chptr
,
529 rb_dlink_list
*list
, char flag
)
538 cur_len
= mlen
= sprintf(buf
, ":%s BMASK %ld %s %c :",
539 me
.id
, (long) chptr
->channelts
, chptr
->chname
, flag
);
542 RB_DLINK_FOREACH(ptr
, list
->head
)
546 tlen
= strlen(banptr
->banstr
) + (banptr
->forward
? strlen(banptr
->forward
) + 1 : 0) + 1;
549 if(cur_len
+ tlen
> BUFSIZE
- 3)
551 /* the one we're trying to send doesnt fit at all! */
558 /* chop off trailing space and send.. */
560 sendto_one(client_p
, "%s", buf
);
566 sprintf(t
, "%s$%s ", banptr
->banstr
, banptr
->forward
);
568 sprintf(t
, "%s ", banptr
->banstr
);
573 /* cant ever exit the loop above without having modified buf,
574 * chop off trailing space and send.
577 sendto_one(client_p
, "%s", buf
);
583 * inputs - client (server) to send nick towards
584 * - client to send nick for
586 * side effects - NICK message is sent towards given client_p
589 burst_TS6(struct Client
*client_p
)
592 struct Client
*target_p
;
593 struct Channel
*chptr
;
594 struct membership
*msptr
;
595 hook_data_client hclientinfo
;
596 hook_data_channel hchaninfo
;
603 hclientinfo
.client
= hchaninfo
.client
= client_p
;
605 RB_DLINK_FOREACH(ptr
, global_client_list
.head
)
607 target_p
= ptr
->data
;
609 if(!IsPerson(target_p
))
612 send_umode(NULL
, target_p
, 0, ubuf
);
619 if(IsCapable(client_p
, CAP_EUID
))
620 sendto_one(client_p
, ":%s EUID %s %d %ld %s %s %s %s %s %s %s :%s",
621 target_p
->servptr
->id
, target_p
->name
,
622 target_p
->hopcount
+ 1,
623 (long) target_p
->tsinfo
, ubuf
,
624 target_p
->username
, target_p
->host
,
625 IsIPSpoof(target_p
) ? "0" : target_p
->sockhost
,
627 IsDynSpoof(target_p
) ? target_p
->orighost
: "*",
628 EmptyString(target_p
->user
->suser
) ? "*" : target_p
->user
->suser
,
631 sendto_one(client_p
, ":%s UID %s %d %ld %s %s %s %s %s :%s",
632 target_p
->servptr
->id
, target_p
->name
,
633 target_p
->hopcount
+ 1,
634 (long) target_p
->tsinfo
, ubuf
,
635 target_p
->username
, target_p
->host
,
636 IsIPSpoof(target_p
) ? "0" : target_p
->sockhost
,
637 target_p
->id
, target_p
->info
);
639 if(!EmptyString(target_p
->certfp
))
640 sendto_one(client_p
, ":%s ENCAP * CERTFP :%s",
641 use_id(target_p
), target_p
->certfp
);
643 if(!IsCapable(client_p
, CAP_EUID
))
645 if(IsDynSpoof(target_p
))
646 sendto_one(client_p
, ":%s ENCAP * REALHOST %s",
647 use_id(target_p
), target_p
->orighost
);
648 if(!EmptyString(target_p
->user
->suser
))
649 sendto_one(client_p
, ":%s ENCAP * LOGIN %s",
650 use_id(target_p
), target_p
->user
->suser
);
653 if(ConfigFileEntry
.burst_away
&& !EmptyString(target_p
->user
->away
))
654 sendto_one(client_p
, ":%s AWAY :%s",
656 target_p
->user
->away
);
658 hclientinfo
.target
= target_p
;
659 call_hook(h_burst_client
, &hclientinfo
);
662 RB_DLINK_FOREACH(ptr
, global_channel_list
.head
)
666 if(*chptr
->chname
!= '#')
669 cur_len
= mlen
= sprintf(buf
, ":%s SJOIN %ld %s %s :", me
.id
,
670 (long) chptr
->channelts
, chptr
->chname
,
671 channel_modes(chptr
, client_p
));
675 RB_DLINK_FOREACH(uptr
, chptr
->members
.head
)
679 tlen
= strlen(use_id(msptr
->client_p
)) + 1;
685 if(cur_len
+ tlen
>= BUFSIZE
- 3)
688 sendto_one(client_p
, "%s", buf
);
693 sprintf(t
, "%s%s ", find_channel_status(msptr
, 1),
694 use_id(msptr
->client_p
));
700 if (rb_dlink_list_length(&chptr
->members
) > 0)
702 /* remove trailing space */
705 sendto_one(client_p
, "%s", buf
);
707 if(rb_dlink_list_length(&chptr
->banlist
) > 0)
708 burst_modes_TS6(client_p
, chptr
, &chptr
->banlist
, 'b');
710 if(IsCapable(client_p
, CAP_EX
) &&
711 rb_dlink_list_length(&chptr
->exceptlist
) > 0)
712 burst_modes_TS6(client_p
, chptr
, &chptr
->exceptlist
, 'e');
714 if(IsCapable(client_p
, CAP_IE
) &&
715 rb_dlink_list_length(&chptr
->invexlist
) > 0)
716 burst_modes_TS6(client_p
, chptr
, &chptr
->invexlist
, 'I');
718 if(rb_dlink_list_length(&chptr
->quietlist
) > 0)
719 burst_modes_TS6(client_p
, chptr
, &chptr
->quietlist
, 'q');
721 if(IsCapable(client_p
, CAP_TB
) && chptr
->topic
!= NULL
)
722 sendto_one(client_p
, ":%s TB %s %ld %s%s:%s",
723 me
.id
, chptr
->chname
, (long) chptr
->topic_time
,
724 ConfigChannel
.burst_topicwho
? chptr
->topic_info
: "",
725 ConfigChannel
.burst_topicwho
? " " : "",
728 if(IsCapable(client_p
, CAP_MLOCK
))
729 sendto_one(client_p
, ":%s MLOCK %ld %s :%s",
730 me
.id
, (long) chptr
->channelts
, chptr
->chname
,
731 EmptyString(chptr
->mode_lock
) ? "" : chptr
->mode_lock
);
733 hchaninfo
.chptr
= chptr
;
734 call_hook(h_burst_channel
, &hchaninfo
);
737 hclientinfo
.target
= NULL
;
738 call_hook(h_burst_finished
, &hclientinfo
);
742 * show_capabilities - show current server capabilities
744 * inputs - pointer to an struct Client
745 * output - pointer to static string
746 * side effects - build up string representing capabilities of server listed
749 show_capabilities(struct Client
*target_p
)
751 static char msgbuf
[BUFSIZE
];
756 rb_strlcpy(msgbuf
, " TS6", sizeof(msgbuf
));
759 rb_strlcat(msgbuf
, " SSL", sizeof(msgbuf
));
761 if(!IsServer(target_p
) || !target_p
->serv
->caps
) /* short circuit if no caps */
764 rb_strlcat(msgbuf
, " ", sizeof(msgbuf
));
765 rb_strlcat(msgbuf
, capability_index_list(serv_capindex
, target_p
->serv
->caps
), sizeof(msgbuf
));
773 * inputs - pointer to a struct Client
778 server_estab(struct Client
*client_p
)
780 struct Client
*target_p
;
781 struct server_conf
*server_p
;
782 hook_data_client hdata
;
785 char note
[HOSTLEN
+ 15];
787 s_assert(NULL
!= client_p
);
791 host
= client_p
->name
;
793 if((server_p
= client_p
->localClient
->att_sconf
) == NULL
)
795 /* This shouldn't happen, better tell the ops... -A1kmm */
796 sendto_realops_snomask(SNO_GENERAL
, is_remote_connect(client_p
) ? L_NETWIDE
: L_ALL
,
797 "Warning: Lost connect{} block for server %s!", host
);
798 return exit_client(client_p
, client_p
, client_p
, "Lost connect{} block!");
801 /* We shouldn't have to check this, it should already done before
802 * server_estab is called. -A1kmm
804 if(client_p
->localClient
->passwd
)
806 memset(client_p
->localClient
->passwd
, 0, strlen(client_p
->localClient
->passwd
));
807 rb_free(client_p
->localClient
->passwd
);
808 client_p
->localClient
->passwd
= NULL
;
811 /* Its got identd , since its a server */
814 if(IsUnknown(client_p
))
816 /* the server may be linking based on certificate fingerprint now. --nenolod */
817 sendto_one(client_p
, "PASS %s TS %d :%s",
818 EmptyString(server_p
->spasswd
) ? "*" : server_p
->spasswd
, TS_CURRENT
, me
.id
);
820 /* pass info to new server */
821 send_capabilities(client_p
, default_server_capabs
822 | (ServerConfCompressed(server_p
) ? CAP_ZIP_SUPPORTED
: 0)
823 | (ServerConfTb(server_p
) ? CAP_TB
: 0));
825 sendto_one(client_p
, "SERVER %s 1 :%s%s",
827 ConfigServerHide
.hidden
? "(H) " : "",
828 (me
.info
[0]) ? (me
.info
) : "IRCers United");
831 if(!rb_set_buffers(client_p
->localClient
->F
, READBUF_SIZE
))
832 ilog_error("rb_set_buffers failed for server");
834 /* Enable compression now */
835 if(IsCapable(client_p
, CAP_ZIP
))
837 start_zlib_session(client_p
);
839 sendto_one(client_p
, "SVINFO %d %d 0 :%ld", TS_CURRENT
, TS_MIN
, (long int)rb_current_time());
841 client_p
->servptr
= &me
;
843 if(IsAnyDead(client_p
))
844 return CLIENT_EXITED
;
848 rb_dlinkAdd(client_p
, &client_p
->lnode
, &me
.serv
->servers
);
849 rb_dlinkMoveNode(&client_p
->localClient
->tnode
, &unknown_list
, &serv_list
);
850 rb_dlinkAddTailAlloc(client_p
, &global_serv_list
);
853 add_to_id_hash(client_p
->id
, client_p
);
855 add_to_client_hash(client_p
->name
, client_p
);
856 /* doesnt duplicate client_p->serv if allocated this struct already */
857 make_server(client_p
);
859 client_p
->serv
->caps
= client_p
->localClient
->caps
;
861 if(client_p
->localClient
->fullcaps
)
863 client_p
->serv
->fullcaps
= rb_strdup(client_p
->localClient
->fullcaps
);
864 rb_free(client_p
->localClient
->fullcaps
);
865 client_p
->localClient
->fullcaps
= NULL
;
868 client_p
->serv
->nameinfo
= scache_connect(client_p
->name
, client_p
->info
, IsHidden(client_p
));
869 client_p
->localClient
->firsttime
= rb_current_time();
870 /* fixing eob timings.. -gnp */
872 if((rb_dlink_list_length(&lclient_list
) + rb_dlink_list_length(&serv_list
)) >
873 (unsigned long)MaxConnectionCount
)
874 MaxConnectionCount
= rb_dlink_list_length(&lclient_list
) +
875 rb_dlink_list_length(&serv_list
);
877 /* Show the real host/IP to admins */
878 sendto_realops_snomask(SNO_GENERAL
, L_ALL
,
879 "Link with %s established: (%s) link",
881 show_capabilities(client_p
));
883 ilog(L_SERVER
, "Link with %s established: (%s) link",
884 log_client_name(client_p
, SHOW_IP
), show_capabilities(client_p
));
887 hdata
.target
= client_p
;
888 call_hook(h_server_introduced
, &hdata
);
890 snprintf(note
, sizeof(note
), "Server: %s", client_p
->name
);
891 rb_note(client_p
->localClient
->F
, note
);
894 ** Old sendto_serv_but_one() call removed because we now
895 ** need to send different names to different servers
896 ** (domain name matching) Send new server to other servers.
898 RB_DLINK_FOREACH(ptr
, serv_list
.head
)
900 target_p
= ptr
->data
;
902 if(target_p
== client_p
)
905 if(has_id(target_p
) && has_id(client_p
))
907 sendto_one(target_p
, ":%s SID %s 2 %s :%s%s",
908 me
.id
, client_p
->name
, client_p
->id
,
909 IsHidden(client_p
) ? "(H) " : "", client_p
->info
);
911 if(!EmptyString(client_p
->serv
->fullcaps
))
912 sendto_one(target_p
, ":%s ENCAP * GCAP :%s",
913 client_p
->id
, client_p
->serv
->fullcaps
);
917 sendto_one(target_p
, ":%s SERVER %s 2 :%s%s",
918 me
.name
, client_p
->name
,
919 IsHidden(client_p
) ? "(H) " : "", client_p
->info
);
921 if(!EmptyString(client_p
->serv
->fullcaps
))
922 sendto_one(target_p
, ":%s ENCAP * GCAP :%s",
923 client_p
->name
, client_p
->serv
->fullcaps
);
928 ** Pass on my client information to the new server
930 ** First, pass only servers (idea is that if the link gets
931 ** cancelled beacause the server was already there,
932 ** there are no NICK's to be cancelled...). Of course,
933 ** if cancellation occurs, all this info is sent anyway,
934 ** and I guess the link dies when a read is attempted...? --msa
936 ** Note: Link cancellation to occur at this point means
937 ** that at least two servers from my fragment are building
938 ** up connection this other fragment at the same time, it's
939 ** a race condition, not the normal way of operation...
941 ** ALSO NOTE: using the get_client_name for server names--
942 ** see previous *WARNING*!!! (Also, original inpath
945 RB_DLINK_FOREACH(ptr
, global_serv_list
.head
)
947 target_p
= ptr
->data
;
949 /* target_p->from == target_p for target_p == client_p */
950 if(IsMe(target_p
) || target_p
->from
== client_p
)
953 /* presumption, if target has an id, so does its uplink */
954 if(has_id(client_p
) && has_id(target_p
))
955 sendto_one(client_p
, ":%s SID %s %d %s :%s%s",
956 target_p
->servptr
->id
, target_p
->name
,
957 target_p
->hopcount
+ 1, target_p
->id
,
958 IsHidden(target_p
) ? "(H) " : "", target_p
->info
);
960 sendto_one(client_p
, ":%s SERVER %s %d :%s%s",
961 target_p
->servptr
->name
,
962 target_p
->name
, target_p
->hopcount
+ 1,
963 IsHidden(target_p
) ? "(H) " : "", target_p
->info
);
965 if(!EmptyString(target_p
->serv
->fullcaps
))
966 sendto_one(client_p
, ":%s ENCAP * GCAP :%s",
967 get_id(target_p
, client_p
),
968 target_p
->serv
->fullcaps
);
971 if(IsCapable(client_p
, CAP_BAN
))
976 /* Always send a PING after connect burst is done */
977 sendto_one(client_p
, "PING :%s", get_id(&me
, client_p
));
979 free_pre_client(client_p
);
981 send_pop_queue(client_p
);
987 * New server connection code
988 * Based upon the stuff floating about in s_bsd.c
993 * serv_connect() - initiate a server connection
995 * inputs - pointer to conf
996 * - pointer to client doing the connet
1000 * This code initiates a connection to a server. It first checks to make
1001 * sure the given server exists. If this is the case, it creates a socket,
1002 * creates a client, saves the socket information in the client, and
1003 * initiates a connection to the server through rb_connect_tcp(). The
1004 * completion of this goes through serv_completed_connection().
1006 * We return 1 if the connection is attempted, since we don't know whether
1007 * it suceeded or not, and 0 if it fails in here somewhere.
1010 serv_connect(struct server_conf
*server_p
, struct Client
*by
)
1012 struct Client
*client_p
;
1013 struct rb_sockaddr_storage myipnum
;
1014 char note
[HOSTLEN
+ 10];
1017 s_assert(server_p
!= NULL
);
1018 if(server_p
== NULL
)
1022 rb_inet_ntop_sock((struct sockaddr
*)&server_p
->my_ipnum
, buf
, sizeof(buf
));
1023 ilog(L_SERVER
, "Connect to *[%s] @%s", server_p
->name
, buf
);
1026 * Make sure this server isn't already connected
1028 if((client_p
= find_server(NULL
, server_p
->name
)))
1030 sendto_realops_snomask(SNO_GENERAL
, L_ALL
,
1031 "Server %s already present from %s",
1032 server_p
->name
, client_p
->name
);
1033 if(by
&& IsPerson(by
) && !MyClient(by
))
1034 sendto_one_notice(by
, ":Server %s already present from %s",
1035 server_p
->name
, client_p
->name
);
1039 /* create a socket for the server connection */
1040 if((F
= rb_socket(GET_SS_FAMILY(&server_p
->my_ipnum
), SOCK_STREAM
, 0, NULL
)) == NULL
)
1042 ilog_error("opening a stream socket");
1046 /* servernames are always guaranteed under HOSTLEN chars */
1047 snprintf(note
, sizeof(note
), "Server: %s", server_p
->name
);
1050 /* Create a local client */
1051 client_p
= make_client(NULL
);
1053 /* Copy in the server, hostname, fd */
1054 rb_strlcpy(client_p
->name
, server_p
->name
, sizeof(client_p
->name
));
1055 rb_strlcpy(client_p
->host
, server_p
->host
, sizeof(client_p
->host
));
1056 rb_strlcpy(client_p
->sockhost
, buf
, sizeof(client_p
->sockhost
));
1057 client_p
->localClient
->F
= F
;
1058 /* shove the port number into the sockaddr */
1059 SET_SS_PORT(&server_p
->my_ipnum
, htons(server_p
->port
));
1062 * Set up the initial server evilness, ripped straight from
1063 * connect_server(), so don't blame me for it being evil.
1067 if(!rb_set_buffers(client_p
->localClient
->F
, READBUF_SIZE
))
1069 ilog_error("setting the buffer size for a server connection");
1073 * Attach config entries to client here rather than in
1074 * serv_connect_callback(). This to avoid null pointer references.
1076 attach_server_conf(client_p
, server_p
);
1079 * at this point we have a connection in progress and C/N lines
1080 * attached to the client, the socket info should be saved in the
1081 * client and it should either be resolved or have a valid address.
1083 * The socket has been connected or connect is in progress.
1085 make_server(client_p
);
1086 if(by
&& IsClient(by
))
1087 strcpy(client_p
->serv
->by
, by
->name
);
1089 strcpy(client_p
->serv
->by
, "AutoConn.");
1091 SetConnecting(client_p
);
1092 rb_dlinkAddTail(client_p
, &client_p
->node
, &global_client_list
);
1094 if(ServerConfVhosted(server_p
))
1096 memcpy(&myipnum
, &server_p
->my_ipnum
, sizeof(myipnum
));
1097 SET_SS_FAMILY(&myipnum
, GET_SS_FAMILY(&server_p
->my_ipnum
));
1098 SET_SS_PORT(&myipnum
, 0);
1101 else if(GET_SS_FAMILY(&server_p
->my_ipnum
) == AF_INET
&& ServerInfo
.specific_ipv4_vhost
)
1103 memcpy(&myipnum
, &ServerInfo
.ip
, sizeof(myipnum
));
1104 SET_SS_FAMILY(&myipnum
, AF_INET
);
1105 SET_SS_PORT(&myipnum
, 0);
1106 SET_SS_LEN(&myipnum
, sizeof(struct sockaddr_in
));
1110 else if((GET_SS_FAMILY(&server_p
->my_ipnum
) == AF_INET6
) && ServerInfo
.specific_ipv6_vhost
)
1112 memcpy(&myipnum
, &ServerInfo
.ip6
, sizeof(myipnum
));
1113 SET_SS_FAMILY(&myipnum
, AF_INET6
);
1114 SET_SS_PORT(&myipnum
, 0);
1115 SET_SS_LEN(&myipnum
, sizeof(struct sockaddr_in6
));
1120 if(ServerConfSSL(server_p
))
1122 rb_connect_tcp(client_p
->localClient
->F
,
1123 (struct sockaddr
*)&server_p
->my_ipnum
, NULL
, 0,
1124 serv_connect_ssl_callback
, client_p
,
1125 ConfigFileEntry
.connect_timeout
);
1128 rb_connect_tcp(client_p
->localClient
->F
,
1129 (struct sockaddr
*)&server_p
->my_ipnum
, NULL
, 0,
1130 serv_connect_callback
, client_p
,
1131 ConfigFileEntry
.connect_timeout
);
1135 if(ServerConfSSL(server_p
))
1136 rb_connect_tcp(client_p
->localClient
->F
, (struct sockaddr
*)&server_p
->my_ipnum
,
1137 (struct sockaddr
*)&myipnum
,
1138 GET_SS_LEN(&myipnum
), serv_connect_ssl_callback
, client_p
,
1139 ConfigFileEntry
.connect_timeout
);
1141 rb_connect_tcp(client_p
->localClient
->F
, (struct sockaddr
*)&server_p
->my_ipnum
,
1142 (struct sockaddr
*)&myipnum
,
1143 GET_SS_LEN(&myipnum
), serv_connect_callback
, client_p
,
1144 ConfigFileEntry
.connect_timeout
);
1150 serv_connect_ssl_callback(rb_fde_t
*F
, int status
, void *data
)
1152 struct Client
*client_p
= data
;
1154 rb_connect_sockaddr(F
, (struct sockaddr
*)&client_p
->localClient
->ip
, sizeof(client_p
->localClient
->ip
));
1157 /* Print error message, just like non-SSL. */
1158 serv_connect_callback(F
, status
, data
);
1161 if(rb_socketpair(AF_UNIX
, SOCK_STREAM
, 0, &xF
[0], &xF
[1], "Outgoing ssld connection") == -1)
1163 ilog_error("rb_socketpair failed for server");
1164 serv_connect_callback(F
, RB_ERROR
, data
);
1168 client_p
->localClient
->F
= xF
[0];
1170 client_p
->localClient
->ssl_ctl
= start_ssld_connect(F
, xF
[1], connid_get(client_p
));
1171 if(!client_p
->localClient
->ssl_ctl
)
1173 serv_connect_callback(client_p
->localClient
->F
, RB_ERROR
, data
);
1177 serv_connect_callback(client_p
->localClient
->F
, RB_OK
, client_p
);
1181 * serv_connect_callback() - complete a server connection.
1183 * This routine is called after the server connection attempt has
1184 * completed. If unsucessful, an error is sent to ops and the client
1185 * is closed. If sucessful, it goes through the initialisation/check
1186 * procedures, the capabilities are sent, and the socket is then
1187 * marked for reading.
1190 serv_connect_callback(rb_fde_t
*F
, int status
, void *data
)
1192 struct Client
*client_p
= data
;
1193 struct server_conf
*server_p
;
1196 /* First, make sure its a real client! */
1197 s_assert(client_p
!= NULL
);
1198 s_assert(client_p
->localClient
->F
== F
);
1200 if(client_p
== NULL
)
1203 /* while we were waiting for the callback, its possible this already
1206 if(find_server(NULL
, client_p
->name
) != NULL
)
1208 exit_client(client_p
, client_p
, &me
, "Server Exists");
1212 if(client_p
->localClient
->ssl_ctl
== NULL
)
1213 rb_connect_sockaddr(F
, (struct sockaddr
*)&client_p
->localClient
->ip
, sizeof(client_p
->localClient
->ip
));
1215 /* Check the status */
1218 /* COMM_ERR_TIMEOUT wont have an errno associated with it,
1219 * the others will.. --fl
1221 if(status
== RB_ERR_TIMEOUT
)
1223 sendto_realops_snomask(SNO_GENERAL
, is_remote_connect(client_p
) ? L_NETWIDE
: L_ALL
,
1224 "Error connecting to %s[%s]: %s",
1228 ilog(L_SERVER
, "Error connecting to %s[%s]: %s",
1229 client_p
->name
, client_p
->sockhost
,
1234 errstr
= strerror(rb_get_sockerr(F
));
1235 sendto_realops_snomask(SNO_GENERAL
, is_remote_connect(client_p
) ? L_NETWIDE
: L_ALL
,
1236 "Error connecting to %s[%s]: %s (%s)",
1239 rb_errstr(status
), errstr
);
1240 ilog(L_SERVER
, "Error connecting to %s[%s]: %s (%s)",
1241 client_p
->name
, client_p
->sockhost
,
1242 rb_errstr(status
), errstr
);
1245 exit_client(client_p
, client_p
, &me
, rb_errstr(status
));
1249 /* COMM_OK, so continue the connection procedure */
1250 /* Get the C/N lines */
1251 if((server_p
= client_p
->localClient
->att_sconf
) == NULL
)
1253 sendto_realops_snomask(SNO_GENERAL
, is_remote_connect(client_p
) ? L_NETWIDE
: L_ALL
, "Lost connect{} block for %s",
1255 exit_client(client_p
, client_p
, &me
, "Lost connect{} block");
1259 /* Next, send the initial handshake */
1260 SetHandshake(client_p
);
1262 /* the server may be linking based on certificate fingerprint now. --nenolod */
1263 sendto_one(client_p
, "PASS %s TS %d :%s",
1264 EmptyString(server_p
->spasswd
) ? "*" : server_p
->spasswd
, TS_CURRENT
, me
.id
);
1266 /* pass my info to the new server */
1267 send_capabilities(client_p
, default_server_capabs
1268 | (ServerConfCompressed(server_p
) ? CAP_ZIP_SUPPORTED
: 0)
1269 | (ServerConfTb(server_p
) ? CAP_TB
: 0));
1271 sendto_one(client_p
, "SERVER %s 1 :%s%s",
1273 ConfigServerHide
.hidden
? "(H) " : "", me
.info
);
1276 * If we've been marked dead because a send failed, just exit
1277 * here now and save everyone the trouble of us ever existing.
1279 if(IsAnyDead(client_p
))
1281 sendto_realops_snomask(SNO_GENERAL
, is_remote_connect(client_p
) ? L_NETWIDE
: L_ALL
,
1282 "%s went dead during handshake", client_p
->name
);
1283 exit_client(client_p
, client_p
, &me
, "Went dead during handshake");
1287 /* don't move to serv_list yet -- we haven't sent a burst! */
1289 /* If we get here, we're ok, so lets start reading some data */
1290 read_packet(F
, client_p
);