2 * ircd-ratbox: A slightly useful ircd.
3 * s_serv.c: Server related functions.
5 * Copyright (C) 1990 Jarkko Oikarinen and University of Oulu, Co Center
6 * Copyright (C) 1996-2002 Hybrid Development Team
7 * Copyright (C) 2002-2005 ircd-ratbox development team
9 * This program is free software; you can redistribute it and/or modify
10 * it under the terms of the GNU General Public License as published by
11 * the Free Software Foundation; either version 2 of the License, or
12 * (at your option) any later version.
14 * This program is distributed in the hope that it will be useful,
15 * but WITHOUT ANY WARRANTY; without even the implied warranty of
16 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
17 * GNU General Public License for more details.
19 * You should have received a copy of the GNU General Public License
20 * along with this program; if not, write to the Free Software
21 * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307
24 * $Id: s_serv.c 3550 2007-08-09 06:47:26Z nenolod $
30 #include <openssl/rsa.h>
40 #include "ircd_defs.h"
44 #include "s_newconf.h"
51 #include "channel.h" /* chcap_usage_counts stuff... */
56 #include "capability.h"
60 #define INADDR_NONE ((unsigned int) 0xffffffff)
63 int MaxConnectionCount
= 1;
64 int MaxClientCount
= 1;
65 int refresh_user_links
= 0;
67 static char buf
[BUFSIZE
];
70 * list of recognized server capabilities. "TS" is not on the list
71 * because all servers that we talk to already do TS, and the kludged
72 * extra argument to "PASS" takes care of checking that. -orabidoo
74 struct CapabilityIndex
*serv_capindex
= NULL
;
83 unsigned int CAP_KNOCK
;
85 unsigned int CAP_UNKLN
;
86 unsigned int CAP_CLUSTER
;
87 unsigned int CAP_ENCAP
;
89 unsigned int CAP_SERVICE
;
90 unsigned int CAP_RSFNC
;
91 unsigned int CAP_SAVE
;
92 unsigned int CAP_EUID
;
93 unsigned int CAP_EOPMOD
;
95 unsigned int CAP_MLOCK
;
98 * initialize our builtin capability table. --nenolod
101 init_builtin_capabs(void)
103 serv_capindex
= capability_index_create("server capabilities");
105 /* These two are not set via CAPAB/GCAP keywords. */
106 CAP_CAP
= capability_put_anonymous(serv_capindex
);
107 CAP_TS6
= capability_put_anonymous(serv_capindex
);
109 CAP_QS
= capability_put(serv_capindex
, "QS");
110 CAP_EX
= capability_put(serv_capindex
, "EX");
111 CAP_CHW
= capability_put(serv_capindex
, "CHW");
112 CAP_IE
= capability_put(serv_capindex
, "IE");
113 CAP_KLN
= capability_put(serv_capindex
, "KLN");
114 CAP_KNOCK
= capability_put(serv_capindex
, "KNOCK");
115 CAP_ZIP
= capability_put(serv_capindex
, "ZIP");
116 CAP_TB
= capability_put(serv_capindex
, "TB");
117 CAP_UNKLN
= capability_put(serv_capindex
, "UNKLN");
118 CAP_CLUSTER
= capability_put(serv_capindex
, "CLUSTER");
119 CAP_ENCAP
= capability_put(serv_capindex
, "ENCAP");
120 CAP_SERVICE
= capability_put(serv_capindex
, "SERVICES");
121 CAP_RSFNC
= capability_put(serv_capindex
, "RSFNC");
122 CAP_SAVE
= capability_put(serv_capindex
, "SAVE");
123 CAP_EUID
= capability_put(serv_capindex
, "EUID");
124 CAP_EOPMOD
= capability_put(serv_capindex
, "EOPMOD");
125 CAP_BAN
= capability_put(serv_capindex
, "BAN");
126 CAP_MLOCK
= capability_put(serv_capindex
, "MLOCK");
128 capability_require(serv_capindex
, "QS");
129 capability_require(serv_capindex
, "EX");
130 capability_require(serv_capindex
, "IE");
131 capability_require(serv_capindex
, "ENCAP");
134 static CNCB serv_connect_callback
;
135 static CNCB serv_connect_ssl_callback
;
138 * hunt_server - Do the basic thing in delivering the message (command)
139 * across the relays to the specific server (server) for
142 * Note: The command is a format string and *MUST* be
143 * of prefixed style (e.g. ":%s COMMAND %s ...").
144 * Command can have only max 8 parameters.
146 * server parv[server] is the parameter identifying the
150 * parv[server] is replaced with the pointer to the
151 * real servername from the matched client (I'm lazy
154 * returns: (see #defines)
157 hunt_server(struct Client
*client_p
, struct Client
*source_p
,
158 const char *command
, int server
, int parc
, const char *parv
[])
160 struct Client
*target_p
;
167 * Assume it's me, if no server
169 if(parc
<= server
|| EmptyString(parv
[server
]) ||
170 match(parv
[server
], me
.name
) || (strcmp(parv
[server
], me
.id
) == 0))
171 return (HUNTED_ISME
);
173 new = LOCAL_COPY(parv
[server
]);
176 * These are to pickup matches that would cause the following
177 * message to go in the wrong direction while doing quick fast
178 * non-matching lookups.
180 if(MyClient(source_p
))
181 target_p
= find_named_client(new);
183 target_p
= find_client(new);
186 if(target_p
->from
== source_p
->from
&& !MyConnect(target_p
))
190 wilds
= (strchr(new, '?') || strchr(new, '*'));
193 * Again, if there are no wild cards involved in the server
194 * name, use the hash lookup
196 if(!target_p
&& wilds
)
198 RB_DLINK_FOREACH(ptr
, global_serv_list
.head
)
200 if(match(new, ((struct Client
*) (ptr
->data
))->name
))
202 target_p
= ptr
->data
;
208 if(target_p
&& !IsRegistered(target_p
))
213 if(IsMe(target_p
) || MyClient(target_p
))
217 parv
[server
] = get_id(target_p
, target_p
);
219 sendto_one(target_p
, command
, get_id(source_p
, target_p
),
220 parv
[1], parv
[2], parv
[3], parv
[4], parv
[5], parv
[6], parv
[7], parv
[8]);
222 return (HUNTED_PASS
);
225 if(MyClient(source_p
) || !IsDigit(parv
[server
][0]))
226 sendto_one_numeric(source_p
, ERR_NOSUCHSERVER
,
227 form_str(ERR_NOSUCHSERVER
), parv
[server
]);
228 return (HUNTED_NOSUCH
);
232 * try_connections - scan through configuration and try new connections.
233 * Returns the calendar time when the next call to this
234 * function should be made latest. (No harm done if this
235 * is called earlier or later...)
238 try_connections(void *unused
)
240 struct Client
*client_p
;
241 struct server_conf
*server_p
= NULL
;
242 struct server_conf
*tmp_p
;
245 int connecting
= FALSE
;
249 RB_DLINK_FOREACH(ptr
, server_conf_list
.head
)
253 if(ServerConfIllegal(tmp_p
) || !ServerConfAutoconn(tmp_p
))
256 /* don't allow ssl connections if ssl isn't setup */
257 if(ServerConfSSL(tmp_p
) && (!ssl_ok
|| !get_ssld_count()))
260 cltmp
= tmp_p
->class;
263 * Skip this entry if the use of it is still on hold until
264 * future. Otherwise handle this entry (and set it on hold
265 * until next time). Will reset only hold times, if already
266 * made one successfull connection... [this algorithm is
267 * a bit fuzzy... -- msa >;) ]
269 if(tmp_p
->hold
> rb_current_time())
271 if(next
> tmp_p
->hold
|| next
== 0)
276 confrq
= get_con_freq(cltmp
);
277 tmp_p
->hold
= rb_current_time() + confrq
;
280 * Found a CONNECT config with port specified, scan clients
281 * and see if this server is already connected?
283 client_p
= find_server(NULL
, tmp_p
->name
);
285 if(!client_p
&& (CurrUsers(cltmp
) < MaxUsers(cltmp
)) && !connecting
)
289 /* We connect only one at time... */
293 if((next
> tmp_p
->hold
) || (next
== 0))
297 /* TODO: change this to set active flag to 0 when added to event! --Habeeb */
298 if(GlobalSetOptions
.autoconn
== 0)
304 /* move this connect entry to end.. */
305 rb_dlinkDelete(&server_p
->node
, &server_conf_list
);
306 rb_dlinkAddTail(server_p
, &server_p
->node
, &server_conf_list
);
309 * We used to only print this if serv_connect() actually
310 * suceeded, but since rb_tcp_connect() can call the callback
311 * immediately if there is an error, we were getting error messages
312 * in the wrong order. SO, we just print out the activated line,
313 * and let serv_connect() / serv_connect_callback() print an
314 * error afterwards if it fails.
317 sendto_realops_snomask(SNO_GENERAL
, L_ALL
,
318 "Connection to %s activated",
321 serv_connect(server_p
, 0);
325 check_server(const char *name
, struct Client
*client_p
)
327 struct server_conf
*server_p
= NULL
;
328 struct server_conf
*tmp_p
;
333 s_assert(NULL
!= client_p
);
337 if(!(client_p
->localClient
->passwd
))
340 if(strlen(name
) > HOSTLEN
)
343 RB_DLINK_FOREACH(ptr
, server_conf_list
.head
)
347 if(ServerConfIllegal(tmp_p
))
350 if(!match(tmp_p
->name
, name
))
355 /* XXX: Fix me for IPv6 */
356 /* XXX sockhost is the IPv4 ip as a string */
357 if(match(tmp_p
->host
, client_p
->host
) ||
358 match(tmp_p
->host
, client_p
->sockhost
))
364 if(ServerConfEncrypted(tmp_p
))
366 encr
= rb_crypt(client_p
->localClient
->passwd
,
368 if(encr
!= NULL
&& !strcmp(tmp_p
->passwd
, encr
))
376 else if(strcmp(tmp_p
->passwd
, client_p
->localClient
->passwd
))
382 if(!client_p
->certfp
|| strcasecmp(tmp_p
->certfp
, client_p
->certfp
) != 0)
394 if(ServerConfSSL(server_p
) && client_p
->localClient
->ssl_ctl
== NULL
)
399 attach_server_conf(client_p
, server_p
);
401 /* clear ZIP/TB if they support but we dont want them */
403 if(!ServerConfCompressed(server_p
))
405 ClearCap(client_p
, CAP_ZIP
);
407 if(!ServerConfTb(server_p
))
408 ClearCap(client_p
, CAP_TB
);
416 * inputs - Client pointer to send to
417 * - int flag of capabilities that this server has
419 * side effects - send the CAPAB line to a server -orabidoo
423 send_capabilities(struct Client
*client_p
, unsigned int cap_can_send
)
425 sendto_one(client_p
, "CAPAB :%s", capability_index_list(serv_capindex
, cap_can_send
));
429 burst_ban(struct Client
*client_p
)
432 struct ConfItem
*aconf
;
433 const char *type
, *oper
;
434 /* +5 for !,@,{,} and null */
435 char operbuf
[NICKLEN
+ USERLEN
+ HOSTLEN
+ HOSTLEN
+ 5];
439 melen
= strlen(me
.name
);
440 RB_DLINK_FOREACH(ptr
, prop_bans
.head
)
444 /* Skip expired stuff. */
445 if(aconf
->lifetime
< rb_current_time())
447 switch(aconf
->status
& ~CONF_ILLEGAL
)
449 case CONF_KILL
: type
= "K"; break;
450 case CONF_DLINE
: type
= "D"; break;
451 case CONF_XLINE
: type
= "X"; break;
452 case CONF_RESV_NICK
: type
= "R"; break;
453 case CONF_RESV_CHANNEL
: type
= "R"; break;
457 oper
= aconf
->info
.oper
;
458 if(aconf
->flags
& CONF_FLAGS_MYOPER
)
460 /* Our operator{} names may not be meaningful
461 * to other servers, so rewrite to our server
464 rb_strlcpy(operbuf
, aconf
->info
.oper
, sizeof buf
);
465 p
= strrchr(operbuf
, '{');
467 operbuf
+ sizeof operbuf
- p
> (ptrdiff_t)(melen
+ 2))
469 memcpy(p
+ 1, me
.name
, melen
);
475 sendto_one(client_p
, ":%s BAN %s %s %s %lu %d %d %s :%s%s%s",
478 aconf
->user
? aconf
->user
: "*", aconf
->host
,
479 (unsigned long)aconf
->created
,
480 (int)(aconf
->hold
- aconf
->created
),
481 (int)(aconf
->lifetime
- aconf
->created
),
484 aconf
->spasswd
? "|" : "",
485 aconf
->spasswd
? aconf
->spasswd
: "");
491 * input - client to burst to, channel name, list to burst, mode flag
493 * side effects - client is sent a list of +b, +e, or +I modes
496 burst_modes_TS6(struct Client
*client_p
, struct Channel
*chptr
,
497 rb_dlink_list
*list
, char flag
)
506 cur_len
= mlen
= rb_sprintf(buf
, ":%s BMASK %ld %s %c :",
507 me
.id
, (long) chptr
->channelts
, chptr
->chname
, flag
);
510 RB_DLINK_FOREACH(ptr
, list
->head
)
514 tlen
= strlen(banptr
->banstr
) + (banptr
->forward
? strlen(banptr
->forward
) + 1 : 0) + 1;
517 if(cur_len
+ tlen
> BUFSIZE
- 3)
519 /* the one we're trying to send doesnt fit at all! */
526 /* chop off trailing space and send.. */
528 sendto_one(client_p
, "%s", buf
);
534 rb_sprintf(t
, "%s$%s ", banptr
->banstr
, banptr
->forward
);
536 rb_sprintf(t
, "%s ", banptr
->banstr
);
541 /* cant ever exit the loop above without having modified buf,
542 * chop off trailing space and send.
545 sendto_one(client_p
, "%s", buf
);
551 * inputs - client (server) to send nick towards
552 * - client to send nick for
554 * side effects - NICK message is sent towards given client_p
557 burst_TS6(struct Client
*client_p
)
560 struct Client
*target_p
;
561 struct Channel
*chptr
;
562 struct membership
*msptr
;
563 hook_data_client hclientinfo
;
564 hook_data_channel hchaninfo
;
571 hclientinfo
.client
= hchaninfo
.client
= client_p
;
573 RB_DLINK_FOREACH(ptr
, global_client_list
.head
)
575 target_p
= ptr
->data
;
577 if(!IsPerson(target_p
))
580 send_umode(NULL
, target_p
, 0, ubuf
);
587 if(IsCapable(client_p
, CAP_EUID
))
588 sendto_one(client_p
, ":%s EUID %s %d %ld %s %s %s %s %s %s %s :%s",
589 target_p
->servptr
->id
, target_p
->name
,
590 target_p
->hopcount
+ 1,
591 (long) target_p
->tsinfo
, ubuf
,
592 target_p
->username
, target_p
->host
,
593 IsIPSpoof(target_p
) ? "0" : target_p
->sockhost
,
595 IsDynSpoof(target_p
) ? target_p
->orighost
: "*",
596 EmptyString(target_p
->user
->suser
) ? "*" : target_p
->user
->suser
,
599 sendto_one(client_p
, ":%s UID %s %d %ld %s %s %s %s %s :%s",
600 target_p
->servptr
->id
, target_p
->name
,
601 target_p
->hopcount
+ 1,
602 (long) target_p
->tsinfo
, ubuf
,
603 target_p
->username
, target_p
->host
,
604 IsIPSpoof(target_p
) ? "0" : target_p
->sockhost
,
605 target_p
->id
, target_p
->info
);
607 if(!EmptyString(target_p
->certfp
))
608 sendto_one(client_p
, ":%s ENCAP * CERTFP :%s",
609 use_id(target_p
), target_p
->certfp
);
611 if(!IsCapable(client_p
, CAP_EUID
))
613 if(IsDynSpoof(target_p
))
614 sendto_one(client_p
, ":%s ENCAP * REALHOST %s",
615 use_id(target_p
), target_p
->orighost
);
616 if(!EmptyString(target_p
->user
->suser
))
617 sendto_one(client_p
, ":%s ENCAP * LOGIN %s",
618 use_id(target_p
), target_p
->user
->suser
);
621 if(ConfigFileEntry
.burst_away
&& !EmptyString(target_p
->user
->away
))
622 sendto_one(client_p
, ":%s AWAY :%s",
624 target_p
->user
->away
);
626 hclientinfo
.target
= target_p
;
627 call_hook(h_burst_client
, &hclientinfo
);
630 RB_DLINK_FOREACH(ptr
, global_channel_list
.head
)
634 if(*chptr
->chname
!= '#')
637 cur_len
= mlen
= rb_sprintf(buf
, ":%s SJOIN %ld %s %s :", me
.id
,
638 (long) chptr
->channelts
, chptr
->chname
,
639 channel_modes(chptr
, client_p
));
643 RB_DLINK_FOREACH(uptr
, chptr
->members
.head
)
647 tlen
= strlen(use_id(msptr
->client_p
)) + 1;
653 if(cur_len
+ tlen
>= BUFSIZE
- 3)
656 sendto_one(client_p
, "%s", buf
);
661 rb_sprintf(t
, "%s%s ", find_channel_status(msptr
, 1),
662 use_id(msptr
->client_p
));
668 if (rb_dlink_list_length(&chptr
->members
) > 0)
670 /* remove trailing space */
673 sendto_one(client_p
, "%s", buf
);
675 if(rb_dlink_list_length(&chptr
->banlist
) > 0)
676 burst_modes_TS6(client_p
, chptr
, &chptr
->banlist
, 'b');
678 if(IsCapable(client_p
, CAP_EX
) &&
679 rb_dlink_list_length(&chptr
->exceptlist
) > 0)
680 burst_modes_TS6(client_p
, chptr
, &chptr
->exceptlist
, 'e');
682 if(IsCapable(client_p
, CAP_IE
) &&
683 rb_dlink_list_length(&chptr
->invexlist
) > 0)
684 burst_modes_TS6(client_p
, chptr
, &chptr
->invexlist
, 'I');
686 if(rb_dlink_list_length(&chptr
->quietlist
) > 0)
687 burst_modes_TS6(client_p
, chptr
, &chptr
->quietlist
, 'q');
689 if(IsCapable(client_p
, CAP_TB
) && chptr
->topic
!= NULL
)
690 sendto_one(client_p
, ":%s TB %s %ld %s%s:%s",
691 me
.id
, chptr
->chname
, (long) chptr
->topic_time
,
692 ConfigChannel
.burst_topicwho
? chptr
->topic_info
: "",
693 ConfigChannel
.burst_topicwho
? " " : "",
696 if(IsCapable(client_p
, CAP_MLOCK
))
697 sendto_one(client_p
, ":%s MLOCK %ld %s :%s",
698 me
.id
, (long) chptr
->channelts
, chptr
->chname
,
699 EmptyString(chptr
->mode_lock
) ? "" : chptr
->mode_lock
);
701 hchaninfo
.chptr
= chptr
;
702 call_hook(h_burst_channel
, &hchaninfo
);
705 hclientinfo
.target
= NULL
;
706 call_hook(h_burst_finished
, &hclientinfo
);
710 * show_capabilities - show current server capabilities
712 * inputs - pointer to an struct Client
713 * output - pointer to static string
714 * side effects - build up string representing capabilities of server listed
717 show_capabilities(struct Client
*target_p
)
719 static char msgbuf
[BUFSIZE
];
724 rb_strlcpy(msgbuf
, " TS6", sizeof(msgbuf
));
727 rb_strlcat(msgbuf
, " SSL", sizeof(msgbuf
));
729 if(!IsServer(target_p
) || !target_p
->serv
->caps
) /* short circuit if no caps */
732 rb_strlcat(msgbuf
, " ", sizeof(msgbuf
));
733 rb_strlcat(msgbuf
, capability_index_list(serv_capindex
, target_p
->serv
->caps
), sizeof(msgbuf
));
741 * inputs - pointer to a struct Client
746 server_estab(struct Client
*client_p
)
748 struct Client
*target_p
;
749 struct server_conf
*server_p
;
750 hook_data_client hdata
;
753 char note
[HOSTLEN
+ 15];
755 s_assert(NULL
!= client_p
);
759 host
= client_p
->name
;
761 if((server_p
= client_p
->localClient
->att_sconf
) == NULL
)
763 /* This shouldn't happen, better tell the ops... -A1kmm */
764 sendto_realops_snomask(SNO_GENERAL
, is_remote_connect(client_p
) ? L_NETWIDE
: L_ALL
,
765 "Warning: Lost connect{} block for server %s!", host
);
766 return exit_client(client_p
, client_p
, client_p
, "Lost connect{} block!");
769 /* We shouldn't have to check this, it should already done before
770 * server_estab is called. -A1kmm
772 if(client_p
->localClient
->passwd
)
774 memset(client_p
->localClient
->passwd
, 0, strlen(client_p
->localClient
->passwd
));
775 rb_free(client_p
->localClient
->passwd
);
776 client_p
->localClient
->passwd
= NULL
;
779 /* Its got identd , since its a server */
782 /* If there is something in the serv_list, it might be this
783 * connecting server..
785 if(!ServerInfo
.hub
&& serv_list
.head
)
787 if(client_p
!= serv_list
.head
->data
|| serv_list
.head
->next
)
789 ServerStats
.is_ref
++;
790 sendto_one(client_p
, "ERROR :I'm a leaf not a hub");
791 return exit_client(client_p
, client_p
, client_p
, "I'm a leaf");
795 if(IsUnknown(client_p
))
797 /* the server may be linking based on certificate fingerprint now. --nenolod */
798 sendto_one(client_p
, "PASS %s TS %d :%s",
799 EmptyString(server_p
->spasswd
) ? "*" : server_p
->spasswd
, TS_CURRENT
, me
.id
);
801 /* pass info to new server */
802 send_capabilities(client_p
, default_server_capabs
803 | (ServerConfCompressed(server_p
) ? CAP_ZIP_SUPPORTED
: 0)
804 | (ServerConfTb(server_p
) ? CAP_TB
: 0));
806 sendto_one(client_p
, "SERVER %s 1 :%s%s",
808 ConfigServerHide
.hidden
? "(H) " : "",
809 (me
.info
[0]) ? (me
.info
) : "IRCers United");
812 if(!rb_set_buffers(client_p
->localClient
->F
, READBUF_SIZE
))
813 ilog_error("rb_set_buffers failed for server");
815 /* Enable compression now */
816 if(IsCapable(client_p
, CAP_ZIP
))
818 start_zlib_session(client_p
);
820 sendto_one(client_p
, "SVINFO %d %d 0 :%ld", TS_CURRENT
, TS_MIN
, (long int)rb_current_time());
822 client_p
->servptr
= &me
;
824 if(IsAnyDead(client_p
))
825 return CLIENT_EXITED
;
829 rb_dlinkAdd(client_p
, &client_p
->lnode
, &me
.serv
->servers
);
830 rb_dlinkMoveNode(&client_p
->localClient
->tnode
, &unknown_list
, &serv_list
);
831 rb_dlinkAddTailAlloc(client_p
, &global_serv_list
);
834 add_to_id_hash(client_p
->id
, client_p
);
836 add_to_client_hash(client_p
->name
, client_p
);
837 /* doesnt duplicate client_p->serv if allocated this struct already */
838 make_server(client_p
);
840 client_p
->serv
->caps
= client_p
->localClient
->caps
;
842 if(client_p
->localClient
->fullcaps
)
844 client_p
->serv
->fullcaps
= rb_strdup(client_p
->localClient
->fullcaps
);
845 rb_free(client_p
->localClient
->fullcaps
);
846 client_p
->localClient
->fullcaps
= NULL
;
849 client_p
->serv
->nameinfo
= scache_connect(client_p
->name
, client_p
->info
, IsHidden(client_p
));
850 client_p
->localClient
->firsttime
= rb_current_time();
851 /* fixing eob timings.. -gnp */
853 if((rb_dlink_list_length(&lclient_list
) + rb_dlink_list_length(&serv_list
)) >
854 (unsigned long)MaxConnectionCount
)
855 MaxConnectionCount
= rb_dlink_list_length(&lclient_list
) +
856 rb_dlink_list_length(&serv_list
);
858 /* Show the real host/IP to admins */
859 sendto_realops_snomask(SNO_GENERAL
, L_ALL
,
860 "Link with %s established: (%s) link",
862 show_capabilities(client_p
));
864 ilog(L_SERVER
, "Link with %s established: (%s) link",
865 log_client_name(client_p
, SHOW_IP
), show_capabilities(client_p
));
868 hdata
.target
= client_p
;
869 call_hook(h_server_introduced
, &hdata
);
871 rb_snprintf(note
, sizeof(note
), "Server: %s", client_p
->name
);
872 rb_note(client_p
->localClient
->F
, note
);
875 ** Old sendto_serv_but_one() call removed because we now
876 ** need to send different names to different servers
877 ** (domain name matching) Send new server to other servers.
879 RB_DLINK_FOREACH(ptr
, serv_list
.head
)
881 target_p
= ptr
->data
;
883 if(target_p
== client_p
)
886 if(has_id(target_p
) && has_id(client_p
))
888 sendto_one(target_p
, ":%s SID %s 2 %s :%s%s",
889 me
.id
, client_p
->name
, client_p
->id
,
890 IsHidden(client_p
) ? "(H) " : "", client_p
->info
);
892 if(!EmptyString(client_p
->serv
->fullcaps
))
893 sendto_one(target_p
, ":%s ENCAP * GCAP :%s",
894 client_p
->id
, client_p
->serv
->fullcaps
);
898 sendto_one(target_p
, ":%s SERVER %s 2 :%s%s",
899 me
.name
, client_p
->name
,
900 IsHidden(client_p
) ? "(H) " : "", client_p
->info
);
902 if(!EmptyString(client_p
->serv
->fullcaps
))
903 sendto_one(target_p
, ":%s ENCAP * GCAP :%s",
904 client_p
->name
, client_p
->serv
->fullcaps
);
909 ** Pass on my client information to the new server
911 ** First, pass only servers (idea is that if the link gets
912 ** cancelled beacause the server was already there,
913 ** there are no NICK's to be cancelled...). Of course,
914 ** if cancellation occurs, all this info is sent anyway,
915 ** and I guess the link dies when a read is attempted...? --msa
917 ** Note: Link cancellation to occur at this point means
918 ** that at least two servers from my fragment are building
919 ** up connection this other fragment at the same time, it's
920 ** a race condition, not the normal way of operation...
922 ** ALSO NOTE: using the get_client_name for server names--
923 ** see previous *WARNING*!!! (Also, original inpath
926 RB_DLINK_FOREACH(ptr
, global_serv_list
.head
)
928 target_p
= ptr
->data
;
930 /* target_p->from == target_p for target_p == client_p */
931 if(IsMe(target_p
) || target_p
->from
== client_p
)
934 /* presumption, if target has an id, so does its uplink */
935 if(has_id(client_p
) && has_id(target_p
))
936 sendto_one(client_p
, ":%s SID %s %d %s :%s%s",
937 target_p
->servptr
->id
, target_p
->name
,
938 target_p
->hopcount
+ 1, target_p
->id
,
939 IsHidden(target_p
) ? "(H) " : "", target_p
->info
);
941 sendto_one(client_p
, ":%s SERVER %s %d :%s%s",
942 target_p
->servptr
->name
,
943 target_p
->name
, target_p
->hopcount
+ 1,
944 IsHidden(target_p
) ? "(H) " : "", target_p
->info
);
946 if(!EmptyString(target_p
->serv
->fullcaps
))
947 sendto_one(client_p
, ":%s ENCAP * GCAP :%s",
948 get_id(target_p
, client_p
),
949 target_p
->serv
->fullcaps
);
952 if(IsCapable(client_p
, CAP_BAN
))
957 /* Always send a PING after connect burst is done */
958 sendto_one(client_p
, "PING :%s", get_id(&me
, client_p
));
960 free_pre_client(client_p
);
962 send_pop_queue(client_p
);
968 * New server connection code
969 * Based upon the stuff floating about in s_bsd.c
974 * serv_connect() - initiate a server connection
976 * inputs - pointer to conf
977 * - pointer to client doing the connet
981 * This code initiates a connection to a server. It first checks to make
982 * sure the given server exists. If this is the case, it creates a socket,
983 * creates a client, saves the socket information in the client, and
984 * initiates a connection to the server through rb_connect_tcp(). The
985 * completion of this goes through serv_completed_connection().
987 * We return 1 if the connection is attempted, since we don't know whether
988 * it suceeded or not, and 0 if it fails in here somewhere.
991 serv_connect(struct server_conf
*server_p
, struct Client
*by
)
993 struct Client
*client_p
;
994 struct rb_sockaddr_storage myipnum
;
995 char note
[HOSTLEN
+ 10];
998 s_assert(server_p
!= NULL
);
1003 rb_inet_ntop_sock((struct sockaddr
*)&server_p
->my_ipnum
, buf
, sizeof(buf
));
1004 ilog(L_SERVER
, "Connect to *[%s] @%s", server_p
->name
, buf
);
1007 * Make sure this server isn't already connected
1009 if((client_p
= find_server(NULL
, server_p
->name
)))
1011 sendto_realops_snomask(SNO_GENERAL
, L_ALL
,
1012 "Server %s already present from %s",
1013 server_p
->name
, client_p
->name
);
1014 if(by
&& IsPerson(by
) && !MyClient(by
))
1015 sendto_one_notice(by
, ":Server %s already present from %s",
1016 server_p
->name
, client_p
->name
);
1020 /* create a socket for the server connection */
1021 if((F
= rb_socket(GET_SS_FAMILY(&server_p
->my_ipnum
), SOCK_STREAM
, 0, NULL
)) == NULL
)
1023 ilog_error("opening a stream socket");
1027 /* servernames are always guaranteed under HOSTLEN chars */
1028 rb_snprintf(note
, sizeof(note
), "Server: %s", server_p
->name
);
1031 /* Create a local client */
1032 client_p
= make_client(NULL
);
1034 /* Copy in the server, hostname, fd */
1035 rb_strlcpy(client_p
->name
, server_p
->name
, sizeof(client_p
->name
));
1036 rb_strlcpy(client_p
->host
, server_p
->host
, sizeof(client_p
->host
));
1037 rb_strlcpy(client_p
->sockhost
, buf
, sizeof(client_p
->sockhost
));
1038 client_p
->localClient
->F
= F
;
1039 add_to_cli_connid_hash(client_p
);
1040 /* shove the port number into the sockaddr */
1042 if(GET_SS_FAMILY(&server_p
->my_ipnum
) == AF_INET6
)
1043 ((struct sockaddr_in6
*)&server_p
->my_ipnum
)->sin6_port
= htons(server_p
->port
);
1046 ((struct sockaddr_in
*)&server_p
->my_ipnum
)->sin_port
= htons(server_p
->port
);
1049 * Set up the initial server evilness, ripped straight from
1050 * connect_server(), so don't blame me for it being evil.
1054 if(!rb_set_buffers(client_p
->localClient
->F
, READBUF_SIZE
))
1056 ilog_error("setting the buffer size for a server connection");
1060 * Attach config entries to client here rather than in
1061 * serv_connect_callback(). This to avoid null pointer references.
1063 attach_server_conf(client_p
, server_p
);
1066 * at this point we have a connection in progress and C/N lines
1067 * attached to the client, the socket info should be saved in the
1068 * client and it should either be resolved or have a valid address.
1070 * The socket has been connected or connect is in progress.
1072 make_server(client_p
);
1073 if(by
&& IsClient(by
))
1074 strcpy(client_p
->serv
->by
, by
->name
);
1076 strcpy(client_p
->serv
->by
, "AutoConn.");
1078 SetConnecting(client_p
);
1079 rb_dlinkAddTail(client_p
, &client_p
->node
, &global_client_list
);
1081 if(ServerConfVhosted(server_p
))
1083 memcpy(&myipnum
, &server_p
->my_ipnum
, sizeof(myipnum
));
1084 ((struct sockaddr_in
*)&myipnum
)->sin_port
= 0;
1085 SET_SS_FAMILY(&myipnum
, GET_SS_FAMILY(&server_p
->my_ipnum
));
1088 else if(GET_SS_FAMILY(&server_p
->my_ipnum
) == AF_INET
&& ServerInfo
.specific_ipv4_vhost
)
1090 memcpy(&myipnum
, &ServerInfo
.ip
, sizeof(myipnum
));
1091 ((struct sockaddr_in
*)&myipnum
)->sin_port
= 0;
1092 SET_SS_FAMILY(&myipnum
, AF_INET
);
1093 SET_SS_LEN(&myipnum
, sizeof(struct sockaddr_in
));
1097 else if((GET_SS_FAMILY(&server_p
->my_ipnum
) == AF_INET6
) && ServerInfo
.specific_ipv6_vhost
)
1099 memcpy(&myipnum
, &ServerInfo
.ip6
, sizeof(myipnum
));
1100 ((struct sockaddr_in6
*)&myipnum
)->sin6_port
= 0;
1101 SET_SS_FAMILY(&myipnum
, AF_INET6
);
1102 SET_SS_LEN(&myipnum
, sizeof(struct sockaddr_in6
));
1107 if(ServerConfSSL(server_p
))
1109 rb_connect_tcp(client_p
->localClient
->F
,
1110 (struct sockaddr
*)&server_p
->my_ipnum
, NULL
, 0,
1111 serv_connect_ssl_callback
, client_p
,
1112 ConfigFileEntry
.connect_timeout
);
1115 rb_connect_tcp(client_p
->localClient
->F
,
1116 (struct sockaddr
*)&server_p
->my_ipnum
, NULL
, 0,
1117 serv_connect_callback
, client_p
,
1118 ConfigFileEntry
.connect_timeout
);
1122 if(ServerConfSSL(server_p
))
1123 rb_connect_tcp(client_p
->localClient
->F
, (struct sockaddr
*)&server_p
->my_ipnum
,
1124 (struct sockaddr
*)&myipnum
,
1125 GET_SS_LEN(&myipnum
), serv_connect_ssl_callback
, client_p
,
1126 ConfigFileEntry
.connect_timeout
);
1128 rb_connect_tcp(client_p
->localClient
->F
, (struct sockaddr
*)&server_p
->my_ipnum
,
1129 (struct sockaddr
*)&myipnum
,
1130 GET_SS_LEN(&myipnum
), serv_connect_callback
, client_p
,
1131 ConfigFileEntry
.connect_timeout
);
1137 serv_connect_ssl_callback(rb_fde_t
*F
, int status
, void *data
)
1139 struct Client
*client_p
= data
;
1141 rb_connect_sockaddr(F
, (struct sockaddr
*)&client_p
->localClient
->ip
, sizeof(client_p
->localClient
->ip
));
1144 /* Print error message, just like non-SSL. */
1145 serv_connect_callback(F
, status
, data
);
1148 if(rb_socketpair(AF_UNIX
, SOCK_STREAM
, 0, &xF
[0], &xF
[1], "Outgoing ssld connection") == -1)
1150 ilog_error("rb_socketpair failed for server");
1151 serv_connect_callback(F
, RB_ERROR
, data
);
1155 del_from_cli_connid_hash(client_p
);
1156 client_p
->localClient
->F
= xF
[0];
1157 add_to_cli_connid_hash(client_p
);
1159 client_p
->localClient
->ssl_ctl
= start_ssld_connect(F
, xF
[1], rb_get_fd(xF
[0]));
1161 serv_connect_callback(client_p
->localClient
->F
, RB_OK
, client_p
);
1165 * serv_connect_callback() - complete a server connection.
1167 * This routine is called after the server connection attempt has
1168 * completed. If unsucessful, an error is sent to ops and the client
1169 * is closed. If sucessful, it goes through the initialisation/check
1170 * procedures, the capabilities are sent, and the socket is then
1171 * marked for reading.
1174 serv_connect_callback(rb_fde_t
*F
, int status
, void *data
)
1176 struct Client
*client_p
= data
;
1177 struct server_conf
*server_p
;
1180 /* First, make sure its a real client! */
1181 s_assert(client_p
!= NULL
);
1182 s_assert(client_p
->localClient
->F
== F
);
1184 if(client_p
== NULL
)
1187 /* while we were waiting for the callback, its possible this already
1190 if(find_server(NULL
, client_p
->name
) != NULL
)
1192 exit_client(client_p
, client_p
, &me
, "Server Exists");
1196 if(client_p
->localClient
->ssl_ctl
== NULL
)
1197 rb_connect_sockaddr(F
, (struct sockaddr
*)&client_p
->localClient
->ip
, sizeof(client_p
->localClient
->ip
));
1199 /* Check the status */
1202 /* COMM_ERR_TIMEOUT wont have an errno associated with it,
1203 * the others will.. --fl
1205 if(status
== RB_ERR_TIMEOUT
)
1207 sendto_realops_snomask(SNO_GENERAL
, is_remote_connect(client_p
) ? L_NETWIDE
: L_ALL
,
1208 "Error connecting to %s[%s]: %s",
1212 ilog(L_SERVER
, "Error connecting to %s[%s]: %s",
1213 client_p
->name
, client_p
->sockhost
,
1218 errstr
= strerror(rb_get_sockerr(F
));
1219 sendto_realops_snomask(SNO_GENERAL
, is_remote_connect(client_p
) ? L_NETWIDE
: L_ALL
,
1220 "Error connecting to %s[%s]: %s (%s)",
1223 rb_errstr(status
), errstr
);
1224 ilog(L_SERVER
, "Error connecting to %s[%s]: %s (%s)",
1225 client_p
->name
, client_p
->sockhost
,
1226 rb_errstr(status
), errstr
);
1229 exit_client(client_p
, client_p
, &me
, rb_errstr(status
));
1233 /* COMM_OK, so continue the connection procedure */
1234 /* Get the C/N lines */
1235 if((server_p
= client_p
->localClient
->att_sconf
) == NULL
)
1237 sendto_realops_snomask(SNO_GENERAL
, is_remote_connect(client_p
) ? L_NETWIDE
: L_ALL
, "Lost connect{} block for %s",
1239 exit_client(client_p
, client_p
, &me
, "Lost connect{} block");
1243 /* Next, send the initial handshake */
1244 SetHandshake(client_p
);
1246 /* the server may be linking based on certificate fingerprint now. --nenolod */
1247 sendto_one(client_p
, "PASS %s TS %d :%s",
1248 EmptyString(server_p
->spasswd
) ? "*" : server_p
->spasswd
, TS_CURRENT
, me
.id
);
1250 /* pass my info to the new server */
1251 send_capabilities(client_p
, default_server_capabs
1252 | (ServerConfCompressed(server_p
) ? CAP_ZIP_SUPPORTED
: 0)
1253 | (ServerConfTb(server_p
) ? CAP_TB
: 0));
1255 sendto_one(client_p
, "SERVER %s 1 :%s%s",
1257 ConfigServerHide
.hidden
? "(H) " : "", me
.info
);
1260 * If we've been marked dead because a send failed, just exit
1261 * here now and save everyone the trouble of us ever existing.
1263 if(IsAnyDead(client_p
))
1265 sendto_realops_snomask(SNO_GENERAL
, is_remote_connect(client_p
) ? L_NETWIDE
: L_ALL
,
1266 "%s went dead during handshake", client_p
->name
);
1267 exit_client(client_p
, client_p
, &me
, "Went dead during handshake");
1271 /* don't move to serv_list yet -- we haven't sent a burst! */
1273 /* If we get here, we're ok, so lets start reading some data */
1274 read_packet(F
, client_p
);