2 * ircd-ratbox: A slightly useful ircd.
3 * s_serv.c: Server related functions.
5 * Copyright (C) 1990 Jarkko Oikarinen and University of Oulu, Co Center
6 * Copyright (C) 1996-2002 Hybrid Development Team
7 * Copyright (C) 2002-2005 ircd-ratbox development team
9 * This program is free software; you can redistribute it and/or modify
10 * it under the terms of the GNU General Public License as published by
11 * the Free Software Foundation; either version 2 of the License, or
12 * (at your option) any later version.
14 * This program is distributed in the hope that it will be useful,
15 * but WITHOUT ANY WARRANTY; without even the implied warranty of
16 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
17 * GNU General Public License for more details.
19 * You should have received a copy of the GNU General Public License
20 * along with this program; if not, write to the Free Software
21 * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307
24 * $Id: s_serv.c 3550 2007-08-09 06:47:26Z nenolod $
30 #include <openssl/rsa.h>
40 #include "ircd_defs.h"
45 #include "s_newconf.h"
52 #include "channel.h" /* chcap_usage_counts stuff... */
57 #include "capability.h"
60 #define INADDR_NONE ((unsigned int) 0xffffffff)
63 int MaxConnectionCount
= 1;
64 int MaxClientCount
= 1;
65 int refresh_user_links
= 0;
67 static char buf
[BUFSIZE
];
70 * list of recognized server capabilities. "TS" is not on the list
71 * because all servers that we talk to already do TS, and the kludged
72 * extra argument to "PASS" takes care of checking that. -orabidoo
74 struct CapabilityIndex
*serv_capindex
= NULL
;
83 unsigned int CAP_KNOCK
;
85 unsigned int CAP_UNKLN
;
86 unsigned int CAP_CLUSTER
;
87 unsigned int CAP_ENCAP
;
89 unsigned int CAP_SERVICE
;
90 unsigned int CAP_RSFNC
;
91 unsigned int CAP_SAVE
;
92 unsigned int CAP_EUID
;
93 unsigned int CAP_EOPMOD
;
95 unsigned int CAP_MLOCK
;
98 * initialize our builtin capability table. --nenolod
101 init_builtin_capabs(void)
103 serv_capindex
= capability_index_create("server capabilities");
105 /* These two are not set via CAPAB/GCAP keywords. */
106 CAP_CAP
= capability_put_anonymous(serv_capindex
);
107 CAP_TS6
= capability_put_anonymous(serv_capindex
);
109 CAP_QS
= capability_put(serv_capindex
, "QS");
110 CAP_EX
= capability_put(serv_capindex
, "EX");
111 CAP_CHW
= capability_put(serv_capindex
, "CHW");
112 CAP_IE
= capability_put(serv_capindex
, "IE");
113 CAP_KLN
= capability_put(serv_capindex
, "KLN");
114 CAP_KNOCK
= capability_put(serv_capindex
, "KNOCK");
115 CAP_ZIP
= capability_put(serv_capindex
, "ZIP");
116 CAP_TB
= capability_put(serv_capindex
, "TB");
117 CAP_UNKLN
= capability_put(serv_capindex
, "UNKLN");
118 CAP_CLUSTER
= capability_put(serv_capindex
, "CLUSTER");
119 CAP_ENCAP
= capability_put(serv_capindex
, "ENCAP");
120 CAP_SERVICE
= capability_put(serv_capindex
, "SERVICES");
121 CAP_RSFNC
= capability_put(serv_capindex
, "RSFNC");
122 CAP_SAVE
= capability_put(serv_capindex
, "SAVE");
123 CAP_EUID
= capability_put(serv_capindex
, "EUID");
124 CAP_EOPMOD
= capability_put(serv_capindex
, "EOPMOD");
125 CAP_BAN
= capability_put(serv_capindex
, "BAN");
126 CAP_MLOCK
= capability_put(serv_capindex
, "MLOCK");
128 capability_require(serv_capindex
, "QS");
129 capability_require(serv_capindex
, "ENCAP");
132 static CNCB serv_connect_callback
;
133 static CNCB serv_connect_ssl_callback
;
136 * hunt_server - Do the basic thing in delivering the message (command)
137 * across the relays to the specific server (server) for
140 * Note: The command is a format string and *MUST* be
141 * of prefixed style (e.g. ":%s COMMAND %s ...").
142 * Command can have only max 8 parameters.
144 * server parv[server] is the parameter identifying the
148 * parv[server] is replaced with the pointer to the
149 * real servername from the matched client (I'm lazy
152 * returns: (see #defines)
155 hunt_server(struct Client
*client_p
, struct Client
*source_p
,
156 const char *command
, int server
, int parc
, const char *parv
[])
158 struct Client
*target_p
;
165 * Assume it's me, if no server
167 if(parc
<= server
|| EmptyString(parv
[server
]) ||
168 match(parv
[server
], me
.name
) || (strcmp(parv
[server
], me
.id
) == 0))
169 return (HUNTED_ISME
);
171 new = LOCAL_COPY(parv
[server
]);
174 * These are to pickup matches that would cause the following
175 * message to go in the wrong direction while doing quick fast
176 * non-matching lookups.
178 if(MyClient(source_p
))
179 target_p
= find_named_client(new);
181 target_p
= find_client(new);
184 if(target_p
->from
== source_p
->from
&& !MyConnect(target_p
))
188 wilds
= (strchr(new, '?') || strchr(new, '*'));
191 * Again, if there are no wild cards involved in the server
192 * name, use the hash lookup
194 if(!target_p
&& wilds
)
196 RB_DLINK_FOREACH(ptr
, global_serv_list
.head
)
198 if(match(new, ((struct Client
*) (ptr
->data
))->name
))
200 target_p
= ptr
->data
;
206 if(target_p
&& !IsRegistered(target_p
))
211 if(IsMe(target_p
) || MyClient(target_p
))
215 parv
[server
] = get_id(target_p
, target_p
);
217 sendto_one(target_p
, command
, get_id(source_p
, target_p
),
218 parv
[1], parv
[2], parv
[3], parv
[4], parv
[5], parv
[6], parv
[7], parv
[8]);
220 return (HUNTED_PASS
);
223 if(MyClient(source_p
) || !IsDigit(parv
[server
][0]))
224 sendto_one_numeric(source_p
, ERR_NOSUCHSERVER
,
225 form_str(ERR_NOSUCHSERVER
), parv
[server
]);
226 return (HUNTED_NOSUCH
);
230 * try_connections - scan through configuration and try new connections.
231 * Returns the calendar time when the next call to this
232 * function should be made latest. (No harm done if this
233 * is called earlier or later...)
236 try_connections(void *unused
)
238 struct Client
*client_p
;
239 struct server_conf
*server_p
= NULL
;
240 struct server_conf
*tmp_p
;
243 int connecting
= FALSE
;
247 RB_DLINK_FOREACH(ptr
, server_conf_list
.head
)
251 if(ServerConfIllegal(tmp_p
) || !ServerConfAutoconn(tmp_p
))
254 /* don't allow ssl connections if ssl isn't setup */
255 if(ServerConfSSL(tmp_p
) && (!ssl_ok
|| !get_ssld_count()))
258 cltmp
= tmp_p
->class;
261 * Skip this entry if the use of it is still on hold until
262 * future. Otherwise handle this entry (and set it on hold
263 * until next time). Will reset only hold times, if already
264 * made one successfull connection... [this algorithm is
265 * a bit fuzzy... -- msa >;) ]
267 if(tmp_p
->hold
> rb_current_time())
269 if(next
> tmp_p
->hold
|| next
== 0)
274 confrq
= get_con_freq(cltmp
);
275 tmp_p
->hold
= rb_current_time() + confrq
;
278 * Found a CONNECT config with port specified, scan clients
279 * and see if this server is already connected?
281 client_p
= find_server(NULL
, tmp_p
->name
);
283 if(!client_p
&& (CurrUsers(cltmp
) < MaxUsers(cltmp
)) && !connecting
)
287 /* We connect only one at time... */
291 if((next
> tmp_p
->hold
) || (next
== 0))
295 /* TODO: change this to set active flag to 0 when added to event! --Habeeb */
296 if(GlobalSetOptions
.autoconn
== 0)
302 /* move this connect entry to end.. */
303 rb_dlinkDelete(&server_p
->node
, &server_conf_list
);
304 rb_dlinkAddTail(server_p
, &server_p
->node
, &server_conf_list
);
307 * We used to only print this if serv_connect() actually
308 * suceeded, but since rb_tcp_connect() can call the callback
309 * immediately if there is an error, we were getting error messages
310 * in the wrong order. SO, we just print out the activated line,
311 * and let serv_connect() / serv_connect_callback() print an
312 * error afterwards if it fails.
315 sendto_realops_snomask(SNO_GENERAL
, L_ALL
,
316 "Connection to %s activated",
319 serv_connect(server_p
, 0);
323 check_server(const char *name
, struct Client
*client_p
)
325 struct server_conf
*server_p
= NULL
;
326 struct server_conf
*tmp_p
;
330 s_assert(NULL
!= client_p
);
334 if(!(client_p
->localClient
->passwd
))
337 if(strlen(name
) > HOSTLEN
)
340 RB_DLINK_FOREACH(ptr
, server_conf_list
.head
)
344 if(ServerConfIllegal(tmp_p
))
347 if(!match(tmp_p
->name
, name
))
352 /* XXX: Fix me for IPv6 */
353 /* XXX sockhost is the IPv4 ip as a string */
354 if(match(tmp_p
->host
, client_p
->host
) ||
355 match(tmp_p
->host
, client_p
->sockhost
))
361 if(ServerConfEncrypted(tmp_p
))
363 if(!strcmp(tmp_p
->passwd
, rb_crypt(client_p
->localClient
->passwd
,
372 else if(strcmp(tmp_p
->passwd
, client_p
->localClient
->passwd
))
378 if(!client_p
->certfp
|| strcasecmp(tmp_p
->certfp
, client_p
->certfp
) != 0)
390 if(ServerConfSSL(server_p
) && client_p
->localClient
->ssl_ctl
== NULL
)
395 attach_server_conf(client_p
, server_p
);
397 /* clear ZIP/TB if they support but we dont want them */
399 if(!ServerConfCompressed(server_p
))
401 ClearCap(client_p
, CAP_ZIP
);
403 if(!ServerConfTb(server_p
))
404 ClearCap(client_p
, CAP_TB
);
412 * inputs - Client pointer to send to
413 * - int flag of capabilities that this server has
415 * side effects - send the CAPAB line to a server -orabidoo
419 send_capabilities(struct Client
*client_p
, unsigned int cap_can_send
)
421 sendto_one(client_p
, "CAPAB :%s", capability_index_list(serv_capindex
, cap_can_send
));
425 burst_ban(struct Client
*client_p
)
428 struct ConfItem
*aconf
;
429 const char *type
, *oper
;
430 /* +5 for !,@,{,} and null */
431 char operbuf
[NICKLEN
+ USERLEN
+ HOSTLEN
+ HOSTLEN
+ 5];
435 melen
= strlen(me
.name
);
436 RB_DLINK_FOREACH(ptr
, prop_bans
.head
)
440 /* Skip expired stuff. */
441 if(aconf
->lifetime
< rb_current_time())
443 switch(aconf
->status
& ~CONF_ILLEGAL
)
445 case CONF_KILL
: type
= "K"; break;
446 case CONF_DLINE
: type
= "D"; break;
447 case CONF_XLINE
: type
= "X"; break;
448 case CONF_RESV_NICK
: type
= "R"; break;
449 case CONF_RESV_CHANNEL
: type
= "R"; break;
453 oper
= aconf
->info
.oper
;
454 if(aconf
->flags
& CONF_FLAGS_MYOPER
)
456 /* Our operator{} names may not be meaningful
457 * to other servers, so rewrite to our server
460 rb_strlcpy(operbuf
, aconf
->info
.oper
, sizeof buf
);
461 p
= strrchr(operbuf
, '{');
463 operbuf
+ sizeof operbuf
- p
> (ptrdiff_t)(melen
+ 2))
465 memcpy(p
+ 1, me
.name
, melen
);
471 sendto_one(client_p
, ":%s BAN %s %s %s %lu %d %d %s :%s%s%s",
474 aconf
->user
? aconf
->user
: "*", aconf
->host
,
475 (unsigned long)aconf
->created
,
476 (int)(aconf
->hold
- aconf
->created
),
477 (int)(aconf
->lifetime
- aconf
->created
),
480 aconf
->spasswd
? "|" : "",
481 aconf
->spasswd
? aconf
->spasswd
: "");
487 * input - client to burst to, channel name, list to burst, mode flag
489 * side effects - client is sent a list of +b, +e, or +I modes
492 burst_modes_TS6(struct Client
*client_p
, struct Channel
*chptr
,
493 rb_dlink_list
*list
, char flag
)
502 cur_len
= mlen
= rb_sprintf(buf
, ":%s BMASK %ld %s %c :",
503 me
.id
, (long) chptr
->channelts
, chptr
->chname
, flag
);
506 RB_DLINK_FOREACH(ptr
, list
->head
)
510 tlen
= strlen(banptr
->banstr
) + (banptr
->forward
? strlen(banptr
->forward
) + 1 : 0) + 1;
513 if(cur_len
+ tlen
> BUFSIZE
- 3)
515 /* the one we're trying to send doesnt fit at all! */
522 /* chop off trailing space and send.. */
524 sendto_one(client_p
, "%s", buf
);
530 rb_sprintf(t
, "%s$%s ", banptr
->banstr
, banptr
->forward
);
532 rb_sprintf(t
, "%s ", banptr
->banstr
);
537 /* cant ever exit the loop above without having modified buf,
538 * chop off trailing space and send.
541 sendto_one(client_p
, "%s", buf
);
547 * inputs - client (server) to send nick towards
548 * - client to send nick for
550 * side effects - NICK message is sent towards given client_p
553 burst_TS6(struct Client
*client_p
)
555 static char ubuf
[12];
556 struct Client
*target_p
;
557 struct Channel
*chptr
;
558 struct membership
*msptr
;
559 hook_data_client hclientinfo
;
560 hook_data_channel hchaninfo
;
567 hclientinfo
.client
= hchaninfo
.client
= client_p
;
569 RB_DLINK_FOREACH(ptr
, global_client_list
.head
)
571 target_p
= ptr
->data
;
573 if(!IsPerson(target_p
))
576 send_umode(NULL
, target_p
, 0, 0, ubuf
);
583 if(IsCapable(client_p
, CAP_EUID
))
584 sendto_one(client_p
, ":%s EUID %s %d %ld %s %s %s %s %s %s %s :%s",
585 target_p
->servptr
->id
, target_p
->name
,
586 target_p
->hopcount
+ 1,
587 (long) target_p
->tsinfo
, ubuf
,
588 target_p
->username
, target_p
->host
,
589 IsIPSpoof(target_p
) ? "0" : target_p
->sockhost
,
591 IsDynSpoof(target_p
) ? target_p
->orighost
: "*",
592 EmptyString(target_p
->user
->suser
) ? "*" : target_p
->user
->suser
,
595 sendto_one(client_p
, ":%s UID %s %d %ld %s %s %s %s %s :%s",
596 target_p
->servptr
->id
, target_p
->name
,
597 target_p
->hopcount
+ 1,
598 (long) target_p
->tsinfo
, ubuf
,
599 target_p
->username
, target_p
->host
,
600 IsIPSpoof(target_p
) ? "0" : target_p
->sockhost
,
601 target_p
->id
, target_p
->info
);
603 if(!EmptyString(target_p
->certfp
))
604 sendto_one(client_p
, ":%s ENCAP * CERTFP :%s",
605 use_id(target_p
), target_p
->certfp
);
607 if(!IsCapable(client_p
, CAP_EUID
))
609 if(IsDynSpoof(target_p
))
610 sendto_one(client_p
, ":%s ENCAP * REALHOST %s",
611 use_id(target_p
), target_p
->orighost
);
612 if(!EmptyString(target_p
->user
->suser
))
613 sendto_one(client_p
, ":%s ENCAP * LOGIN %s",
614 use_id(target_p
), target_p
->user
->suser
);
617 if(ConfigFileEntry
.burst_away
&& !EmptyString(target_p
->user
->away
))
618 sendto_one(client_p
, ":%s AWAY :%s",
620 target_p
->user
->away
);
622 hclientinfo
.target
= target_p
;
623 call_hook(h_burst_client
, &hclientinfo
);
626 RB_DLINK_FOREACH(ptr
, global_channel_list
.head
)
630 if(*chptr
->chname
!= '#')
633 cur_len
= mlen
= rb_sprintf(buf
, ":%s SJOIN %ld %s %s :", me
.id
,
634 (long) chptr
->channelts
, chptr
->chname
,
635 channel_modes(chptr
, client_p
));
639 RB_DLINK_FOREACH(uptr
, chptr
->members
.head
)
643 tlen
= strlen(use_id(msptr
->client_p
)) + 1;
649 if(cur_len
+ tlen
>= BUFSIZE
- 3)
652 sendto_one(client_p
, "%s", buf
);
657 rb_sprintf(t
, "%s%s ", find_channel_status(msptr
, 1),
658 use_id(msptr
->client_p
));
664 if (rb_dlink_list_length(&chptr
->members
) > 0)
666 /* remove trailing space */
669 sendto_one(client_p
, "%s", buf
);
671 if(rb_dlink_list_length(&chptr
->banlist
) > 0)
672 burst_modes_TS6(client_p
, chptr
, &chptr
->banlist
, 'b');
674 if(IsCapable(client_p
, CAP_EX
) &&
675 rb_dlink_list_length(&chptr
->exceptlist
) > 0)
676 burst_modes_TS6(client_p
, chptr
, &chptr
->exceptlist
, 'e');
678 if(IsCapable(client_p
, CAP_IE
) &&
679 rb_dlink_list_length(&chptr
->invexlist
) > 0)
680 burst_modes_TS6(client_p
, chptr
, &chptr
->invexlist
, 'I');
682 if(rb_dlink_list_length(&chptr
->quietlist
) > 0)
683 burst_modes_TS6(client_p
, chptr
, &chptr
->quietlist
, 'q');
685 if(IsCapable(client_p
, CAP_TB
) && chptr
->topic
!= NULL
)
686 sendto_one(client_p
, ":%s TB %s %ld %s%s:%s",
687 me
.id
, chptr
->chname
, (long) chptr
->topic_time
,
688 ConfigChannel
.burst_topicwho
? chptr
->topic_info
: "",
689 ConfigChannel
.burst_topicwho
? " " : "",
692 if(IsCapable(client_p
, CAP_MLOCK
))
693 sendto_one(client_p
, ":%s MLOCK %ld %s :%s",
694 me
.id
, (long) chptr
->channelts
, chptr
->chname
,
695 EmptyString(chptr
->mode_lock
) ? "" : chptr
->mode_lock
);
697 hchaninfo
.chptr
= chptr
;
698 call_hook(h_burst_channel
, &hchaninfo
);
701 hclientinfo
.target
= NULL
;
702 call_hook(h_burst_finished
, &hclientinfo
);
706 * show_capabilities - show current server capabilities
708 * inputs - pointer to an struct Client
709 * output - pointer to static string
710 * side effects - build up string representing capabilities of server listed
713 show_capabilities(struct Client
*target_p
)
715 static char msgbuf
[BUFSIZE
];
720 rb_strlcpy(msgbuf
, " TS6", sizeof(msgbuf
));
723 rb_strlcat(msgbuf
, " SSL", sizeof(msgbuf
));
725 if(!IsServer(target_p
) || !target_p
->serv
->caps
) /* short circuit if no caps */
728 rb_strlcat(msgbuf
, " ", sizeof(msgbuf
));
729 rb_strlcat(msgbuf
, capability_index_list(serv_capindex
, target_p
->serv
->caps
), sizeof(msgbuf
));
737 * inputs - pointer to a struct Client
742 server_estab(struct Client
*client_p
)
744 struct Client
*target_p
;
745 struct server_conf
*server_p
;
746 hook_data_client hdata
;
749 char note
[HOSTLEN
+ 15];
751 s_assert(NULL
!= client_p
);
755 host
= client_p
->name
;
757 if((server_p
= client_p
->localClient
->att_sconf
) == NULL
)
759 /* This shouldn't happen, better tell the ops... -A1kmm */
760 sendto_realops_snomask(SNO_GENERAL
, is_remote_connect(client_p
) ? L_NETWIDE
: L_ALL
,
761 "Warning: Lost connect{} block for server %s!", host
);
762 return exit_client(client_p
, client_p
, client_p
, "Lost connect{} block!");
765 /* We shouldn't have to check this, it should already done before
766 * server_estab is called. -A1kmm
768 if(client_p
->localClient
->passwd
)
770 memset(client_p
->localClient
->passwd
, 0, strlen(client_p
->localClient
->passwd
));
771 rb_free(client_p
->localClient
->passwd
);
772 client_p
->localClient
->passwd
= NULL
;
775 /* Its got identd , since its a server */
778 /* If there is something in the serv_list, it might be this
779 * connecting server..
781 if(!ServerInfo
.hub
&& serv_list
.head
)
783 if(client_p
!= serv_list
.head
->data
|| serv_list
.head
->next
)
785 ServerStats
.is_ref
++;
786 sendto_one(client_p
, "ERROR :I'm a leaf not a hub");
787 return exit_client(client_p
, client_p
, client_p
, "I'm a leaf");
791 if(IsUnknown(client_p
))
793 /* the server may be linking based on certificate fingerprint now. --nenolod */
794 sendto_one(client_p
, "PASS %s TS %d :%s",
795 EmptyString(server_p
->spasswd
) ? "*" : server_p
->spasswd
, TS_CURRENT
, me
.id
);
797 /* pass info to new server */
798 send_capabilities(client_p
, default_server_capabs
799 | (ServerConfCompressed(server_p
) ? CAP_ZIP_SUPPORTED
: 0)
800 | (ServerConfTb(server_p
) ? CAP_TB
: 0));
802 sendto_one(client_p
, "SERVER %s 1 :%s%s",
804 ConfigServerHide
.hidden
? "(H) " : "",
805 (me
.info
[0]) ? (me
.info
) : "IRCers United");
808 if(!rb_set_buffers(client_p
->localClient
->F
, READBUF_SIZE
))
809 ilog_error("rb_set_buffers failed for server");
811 /* Enable compression now */
812 if(IsCapable(client_p
, CAP_ZIP
))
814 start_zlib_session(client_p
);
816 sendto_one(client_p
, "SVINFO %d %d 0 :%ld", TS_CURRENT
, TS_MIN
, (long int)rb_current_time());
818 client_p
->servptr
= &me
;
820 if(IsAnyDead(client_p
))
821 return CLIENT_EXITED
;
825 rb_dlinkAdd(client_p
, &client_p
->lnode
, &me
.serv
->servers
);
826 rb_dlinkMoveNode(&client_p
->localClient
->tnode
, &unknown_list
, &serv_list
);
827 rb_dlinkAddTailAlloc(client_p
, &global_serv_list
);
830 add_to_id_hash(client_p
->id
, client_p
);
832 add_to_client_hash(client_p
->name
, client_p
);
833 /* doesnt duplicate client_p->serv if allocated this struct already */
834 make_server(client_p
);
836 client_p
->serv
->caps
= client_p
->localClient
->caps
;
838 if(client_p
->localClient
->fullcaps
)
840 client_p
->serv
->fullcaps
= rb_strdup(client_p
->localClient
->fullcaps
);
841 rb_free(client_p
->localClient
->fullcaps
);
842 client_p
->localClient
->fullcaps
= NULL
;
845 client_p
->serv
->nameinfo
= scache_connect(client_p
->name
, client_p
->info
, IsHidden(client_p
));
846 client_p
->localClient
->firsttime
= rb_current_time();
847 /* fixing eob timings.. -gnp */
849 if((rb_dlink_list_length(&lclient_list
) + rb_dlink_list_length(&serv_list
)) >
850 (unsigned long)MaxConnectionCount
)
851 MaxConnectionCount
= rb_dlink_list_length(&lclient_list
) +
852 rb_dlink_list_length(&serv_list
);
854 /* Show the real host/IP to admins */
855 sendto_realops_snomask(SNO_GENERAL
, L_ALL
,
856 "Link with %s established: (%s) link",
858 show_capabilities(client_p
));
860 ilog(L_SERVER
, "Link with %s established: (%s) link",
861 log_client_name(client_p
, SHOW_IP
), show_capabilities(client_p
));
864 hdata
.target
= client_p
;
865 call_hook(h_server_introduced
, &hdata
);
867 rb_snprintf(note
, sizeof(note
), "Server: %s", client_p
->name
);
868 rb_note(client_p
->localClient
->F
, note
);
871 ** Old sendto_serv_but_one() call removed because we now
872 ** need to send different names to different servers
873 ** (domain name matching) Send new server to other servers.
875 RB_DLINK_FOREACH(ptr
, serv_list
.head
)
877 target_p
= ptr
->data
;
879 if(target_p
== client_p
)
882 if(has_id(target_p
) && has_id(client_p
))
884 sendto_one(target_p
, ":%s SID %s 2 %s :%s%s",
885 me
.id
, client_p
->name
, client_p
->id
,
886 IsHidden(client_p
) ? "(H) " : "", client_p
->info
);
888 if(IsCapable(target_p
, CAP_ENCAP
) &&
889 !EmptyString(client_p
->serv
->fullcaps
))
890 sendto_one(target_p
, ":%s ENCAP * GCAP :%s",
891 client_p
->id
, client_p
->serv
->fullcaps
);
895 sendto_one(target_p
, ":%s SERVER %s 2 :%s%s",
896 me
.name
, client_p
->name
,
897 IsHidden(client_p
) ? "(H) " : "", client_p
->info
);
899 if(IsCapable(target_p
, CAP_ENCAP
) &&
900 !EmptyString(client_p
->serv
->fullcaps
))
901 sendto_one(target_p
, ":%s ENCAP * GCAP :%s",
902 client_p
->name
, client_p
->serv
->fullcaps
);
907 ** Pass on my client information to the new server
909 ** First, pass only servers (idea is that if the link gets
910 ** cancelled beacause the server was already there,
911 ** there are no NICK's to be cancelled...). Of course,
912 ** if cancellation occurs, all this info is sent anyway,
913 ** and I guess the link dies when a read is attempted...? --msa
915 ** Note: Link cancellation to occur at this point means
916 ** that at least two servers from my fragment are building
917 ** up connection this other fragment at the same time, it's
918 ** a race condition, not the normal way of operation...
920 ** ALSO NOTE: using the get_client_name for server names--
921 ** see previous *WARNING*!!! (Also, original inpath
924 RB_DLINK_FOREACH(ptr
, global_serv_list
.head
)
926 target_p
= ptr
->data
;
928 /* target_p->from == target_p for target_p == client_p */
929 if(IsMe(target_p
) || target_p
->from
== client_p
)
932 /* presumption, if target has an id, so does its uplink */
933 if(has_id(client_p
) && has_id(target_p
))
934 sendto_one(client_p
, ":%s SID %s %d %s :%s%s",
935 target_p
->servptr
->id
, target_p
->name
,
936 target_p
->hopcount
+ 1, target_p
->id
,
937 IsHidden(target_p
) ? "(H) " : "", target_p
->info
);
939 sendto_one(client_p
, ":%s SERVER %s %d :%s%s",
940 target_p
->servptr
->name
,
941 target_p
->name
, target_p
->hopcount
+ 1,
942 IsHidden(target_p
) ? "(H) " : "", target_p
->info
);
944 if(IsCapable(client_p
, CAP_ENCAP
) &&
945 !EmptyString(target_p
->serv
->fullcaps
))
946 sendto_one(client_p
, ":%s ENCAP * GCAP :%s",
947 get_id(target_p
, client_p
),
948 target_p
->serv
->fullcaps
);
951 if(IsCapable(client_p
, CAP_BAN
))
956 /* Always send a PING after connect burst is done */
957 sendto_one(client_p
, "PING :%s", get_id(&me
, client_p
));
959 free_pre_client(client_p
);
961 send_pop_queue(client_p
);
967 * New server connection code
968 * Based upon the stuff floating about in s_bsd.c
973 serv_connect_resolved(struct Client
*client_p
)
975 struct rb_sockaddr_storage myipnum
;
976 char vhoststr
[HOSTIPLEN
];
977 struct server_conf
*server_p
;
980 if((server_p
= client_p
->localClient
->att_sconf
) == NULL
)
982 sendto_realops_snomask(SNO_GENERAL
, is_remote_connect(client_p
) ? L_NETWIDE
: L_ALL
, "Lost connect{} block for %s",
984 exit_client(client_p
, client_p
, &me
, "Lost connect{} block");
989 if(client_p
->localClient
->ip
.ss_family
== AF_INET6
)
990 port
= ntohs(((struct sockaddr_in6
*)&client_p
->localClient
->ip
)->sin6_port
);
993 port
= ntohs(((struct sockaddr_in
*)&client_p
->localClient
->ip
)->sin_port
);
995 if(ServerConfVhosted(server_p
))
997 memcpy(&myipnum
, &server_p
->my_ipnum
, sizeof(myipnum
));
998 ((struct sockaddr_in
*)&myipnum
)->sin_port
= 0;
999 myipnum
.ss_family
= server_p
->aftype
;
1002 else if(server_p
->aftype
== AF_INET
&& ServerInfo
.specific_ipv4_vhost
)
1004 memcpy(&myipnum
, &ServerInfo
.ip
, sizeof(myipnum
));
1005 ((struct sockaddr_in
*)&myipnum
)->sin_port
= 0;
1006 myipnum
.ss_family
= AF_INET
;
1007 SET_SS_LEN(&myipnum
, sizeof(struct sockaddr_in
));
1011 else if((server_p
->aftype
== AF_INET6
) && ServerInfo
.specific_ipv6_vhost
)
1013 memcpy(&myipnum
, &ServerInfo
.ip6
, sizeof(myipnum
));
1014 ((struct sockaddr_in6
*)&myipnum
)->sin6_port
= 0;
1015 myipnum
.ss_family
= AF_INET6
;
1016 SET_SS_LEN(&myipnum
, sizeof(struct sockaddr_in6
));
1022 ilog(L_SERVER
, "Connecting to %s[%s] port %d (%s)", client_p
->name
, client_p
->sockhost
, port
,
1024 server_p
->aftype
== AF_INET6
? "IPv6" :
1026 (server_p
->aftype
== AF_INET
? "IPv4" : "?"));
1028 if(ServerConfSSL(server_p
))
1030 rb_connect_tcp(client_p
->localClient
->F
, (struct sockaddr
*)&client_p
->localClient
->ip
,
1031 NULL
, 0, serv_connect_ssl_callback
,
1032 client_p
, ConfigFileEntry
.connect_timeout
);
1035 rb_connect_tcp(client_p
->localClient
->F
, (struct sockaddr
*)&client_p
->localClient
->ip
,
1036 NULL
, 0, serv_connect_callback
,
1037 client_p
, ConfigFileEntry
.connect_timeout
);
1042 rb_inet_ntop_sock((struct sockaddr
*)&myipnum
, vhoststr
, sizeof vhoststr
);
1043 ilog(L_SERVER
, "Connecting to %s[%s] port %d (%s) (vhost %s)", client_p
->name
, client_p
->sockhost
, port
,
1045 server_p
->aftype
== AF_INET6
? "IPv6" :
1047 (server_p
->aftype
== AF_INET
? "IPv4" : "?"), vhoststr
);
1050 if(ServerConfSSL(server_p
))
1051 rb_connect_tcp(client_p
->localClient
->F
, (struct sockaddr
*)&client_p
->localClient
->ip
,
1052 (struct sockaddr
*) &myipnum
,
1053 GET_SS_LEN(&myipnum
), serv_connect_ssl_callback
, client_p
,
1054 ConfigFileEntry
.connect_timeout
);
1056 rb_connect_tcp(client_p
->localClient
->F
, (struct sockaddr
*)&client_p
->localClient
->ip
,
1057 (struct sockaddr
*) &myipnum
,
1058 GET_SS_LEN(&myipnum
), serv_connect_callback
, client_p
,
1059 ConfigFileEntry
.connect_timeout
);
1065 serv_connect_dns_callback(void *vptr
, struct DNSReply
*reply
)
1067 struct Client
*client_p
= vptr
;
1070 rb_free(client_p
->localClient
->dnsquery
);
1071 client_p
->localClient
->dnsquery
= NULL
;
1075 sendto_realops_snomask(SNO_GENERAL
, is_remote_connect(client_p
) ? L_NETWIDE
: L_ALL
, "Cannot resolve hostname for %s",
1077 ilog(L_SERVER
, "Cannot resolve hostname for %s",
1078 log_client_name(client_p
, HIDE_IP
));
1079 exit_client(client_p
, client_p
, &me
, "Cannot resolve hostname");
1083 if(reply
->addr
.ss_family
== AF_INET6
)
1084 port
= ((struct sockaddr_in6
*)&client_p
->localClient
->ip
)->sin6_port
;
1087 port
= ((struct sockaddr_in
*)&client_p
->localClient
->ip
)->sin_port
;
1088 memcpy(&client_p
->localClient
->ip
, &reply
->addr
, sizeof(client_p
->localClient
->ip
));
1090 if(reply
->addr
.ss_family
== AF_INET6
)
1091 ((struct sockaddr_in6
*)&client_p
->localClient
->ip
)->sin6_port
= port
;
1094 ((struct sockaddr_in
*)&client_p
->localClient
->ip
)->sin_port
= port
;
1095 /* Set sockhost properly now -- jilles */
1096 rb_inet_ntop_sock((struct sockaddr
*)&client_p
->localClient
->ip
,
1097 client_p
->sockhost
, sizeof client_p
->sockhost
);
1098 serv_connect_resolved(client_p
);
1102 * serv_connect() - initiate a server connection
1104 * inputs - pointer to conf
1105 * - pointer to client doing the connet
1109 * This code initiates a connection to a server. It first checks to make
1110 * sure the given server exists. If this is the case, it creates a socket,
1111 * creates a client, saves the socket information in the client, and
1112 * initiates a connection to the server through rb_connect_tcp(). The
1113 * completion of this goes through serv_completed_connection().
1115 * We return 1 if the connection is attempted, since we don't know whether
1116 * it suceeded or not, and 0 if it fails in here somewhere.
1119 serv_connect(struct server_conf
*server_p
, struct Client
*by
)
1121 struct Client
*client_p
;
1122 struct rb_sockaddr_storage theiripnum
;
1124 char note
[HOSTLEN
+ 10];
1126 s_assert(server_p
!= NULL
);
1127 if(server_p
== NULL
)
1131 * Make sure this server isn't already connected
1133 if((client_p
= find_server(NULL
, server_p
->name
)))
1135 sendto_realops_snomask(SNO_GENERAL
, L_ALL
,
1136 "Server %s already present from %s",
1137 server_p
->name
, client_p
->name
);
1138 if(by
&& IsPerson(by
) && !MyClient(by
))
1139 sendto_one_notice(by
, ":Server %s already present from %s",
1140 server_p
->name
, client_p
->name
);
1144 /* create a socket for the server connection */
1145 if((F
= rb_socket(server_p
->aftype
, SOCK_STREAM
, 0, NULL
)) == NULL
)
1147 ilog_error("opening a stream socket");
1151 rb_snprintf(note
, sizeof note
, "Server: %s", server_p
->name
);
1154 /* Create a local client */
1155 client_p
= make_client(NULL
);
1157 /* Copy in the server, hostname, fd
1158 * The sockhost may be a hostname, this will be corrected later
1161 rb_strlcpy(client_p
->name
, server_p
->name
, sizeof(client_p
->name
));
1162 rb_strlcpy(client_p
->host
, server_p
->host
, sizeof(client_p
->host
));
1163 rb_strlcpy(client_p
->sockhost
, server_p
->host
, sizeof(client_p
->sockhost
));
1164 client_p
->localClient
->F
= F
;
1165 add_to_cli_fd_hash(client_p
);
1168 * Set up the initial server evilness, ripped straight from
1169 * connect_server(), so don't blame me for it being evil.
1173 if(!rb_set_buffers(client_p
->localClient
->F
, READBUF_SIZE
))
1175 ilog_error("setting the buffer size for a server connection");
1179 * Attach config entries to client here rather than in
1180 * serv_connect_callback(). This to avoid null pointer references.
1182 attach_server_conf(client_p
, server_p
);
1185 * at this point we have a connection in progress and C/N lines
1186 * attached to the client, the socket info should be saved in the
1187 * client and it should either be resolved or have a valid address.
1189 * The socket has been connected or connect is in progress.
1191 make_server(client_p
);
1192 if(by
&& IsPerson(by
))
1194 strcpy(client_p
->serv
->by
, by
->name
);
1195 if(client_p
->serv
->user
)
1196 free_user(client_p
->serv
->user
, NULL
);
1197 client_p
->serv
->user
= by
->user
;
1202 strcpy(client_p
->serv
->by
, "AutoConn.");
1203 if(client_p
->serv
->user
)
1204 free_user(client_p
->serv
->user
, NULL
);
1205 client_p
->serv
->user
= NULL
;
1207 SetConnecting(client_p
);
1208 rb_dlinkAddTail(client_p
, &client_p
->node
, &global_client_list
);
1210 if (rb_inet_pton_sock(server_p
->host
, (struct sockaddr
*)&theiripnum
) > 0)
1212 memcpy(&client_p
->localClient
->ip
, &theiripnum
, sizeof(client_p
->localClient
->ip
));
1214 if(theiripnum
.ss_family
== AF_INET6
)
1215 ((struct sockaddr_in6
*)&client_p
->localClient
->ip
)->sin6_port
= htons(server_p
->port
);
1218 ((struct sockaddr_in
*)&client_p
->localClient
->ip
)->sin_port
= htons(server_p
->port
);
1220 return serv_connect_resolved(client_p
);
1225 if(theiripnum
.ss_family
== AF_INET6
)
1226 ((struct sockaddr_in6
*)&client_p
->localClient
->ip
)->sin6_port
= htons(server_p
->port
);
1229 ((struct sockaddr_in
*)&client_p
->localClient
->ip
)->sin_port
= htons(server_p
->port
);
1231 client_p
->localClient
->dnsquery
= rb_malloc(sizeof(struct DNSQuery
));
1232 client_p
->localClient
->dnsquery
->ptr
= client_p
;
1233 client_p
->localClient
->dnsquery
->callback
= serv_connect_dns_callback
;
1234 gethost_byname_type(server_p
->host
, client_p
->localClient
->dnsquery
,
1236 server_p
->aftype
== AF_INET6
? T_AAAA
:
1244 serv_connect_ssl_callback(rb_fde_t
*F
, int status
, void *data
)
1246 struct Client
*client_p
= data
;
1248 rb_connect_sockaddr(F
, (struct sockaddr
*)&client_p
->localClient
->ip
, sizeof(client_p
->localClient
->ip
));
1251 /* Print error message, just like non-SSL. */
1252 serv_connect_callback(F
, status
, data
);
1255 if(rb_socketpair(AF_UNIX
, SOCK_STREAM
, 0, &xF
[0], &xF
[1], "Outgoing ssld connection") == -1)
1257 ilog_error("rb_socketpair failed for server");
1258 serv_connect_callback(F
, RB_ERROR
, data
);
1262 del_from_cli_fd_hash(client_p
);
1263 client_p
->localClient
->F
= xF
[0];
1264 add_to_cli_fd_hash(client_p
);
1266 client_p
->localClient
->ssl_ctl
= start_ssld_connect(F
, xF
[1], rb_get_fd(xF
[0]));
1268 serv_connect_callback(client_p
->localClient
->F
, RB_OK
, client_p
);
1272 * serv_connect_callback() - complete a server connection.
1274 * This routine is called after the server connection attempt has
1275 * completed. If unsucessful, an error is sent to ops and the client
1276 * is closed. If sucessful, it goes through the initialisation/check
1277 * procedures, the capabilities are sent, and the socket is then
1278 * marked for reading.
1281 serv_connect_callback(rb_fde_t
*F
, int status
, void *data
)
1283 struct Client
*client_p
= data
;
1284 struct server_conf
*server_p
;
1287 /* First, make sure its a real client! */
1288 s_assert(client_p
!= NULL
);
1289 s_assert(client_p
->localClient
->F
== F
);
1291 if(client_p
== NULL
)
1294 /* while we were waiting for the callback, its possible this already
1297 if(find_server(NULL
, client_p
->name
) != NULL
)
1299 exit_client(client_p
, client_p
, &me
, "Server Exists");
1303 if(client_p
->localClient
->ssl_ctl
== NULL
)
1304 rb_connect_sockaddr(F
, (struct sockaddr
*)&client_p
->localClient
->ip
, sizeof(client_p
->localClient
->ip
));
1306 /* Check the status */
1309 /* COMM_ERR_TIMEOUT wont have an errno associated with it,
1310 * the others will.. --fl
1312 if(status
== RB_ERR_TIMEOUT
)
1314 sendto_realops_snomask(SNO_GENERAL
, is_remote_connect(client_p
) ? L_NETWIDE
: L_ALL
,
1315 "Error connecting to %s[%s]: %s",
1319 ilog(L_SERVER
, "Error connecting to %s[%s]: %s",
1320 client_p
->name
, client_p
->sockhost
,
1325 errstr
= strerror(rb_get_sockerr(F
));
1326 sendto_realops_snomask(SNO_GENERAL
, is_remote_connect(client_p
) ? L_NETWIDE
: L_ALL
,
1327 "Error connecting to %s[%s]: %s (%s)",
1330 rb_errstr(status
), errstr
);
1331 ilog(L_SERVER
, "Error connecting to %s[%s]: %s (%s)",
1332 client_p
->name
, client_p
->sockhost
,
1333 rb_errstr(status
), errstr
);
1336 exit_client(client_p
, client_p
, &me
, rb_errstr(status
));
1340 /* COMM_OK, so continue the connection procedure */
1341 /* Get the C/N lines */
1342 if((server_p
= client_p
->localClient
->att_sconf
) == NULL
)
1344 sendto_realops_snomask(SNO_GENERAL
, is_remote_connect(client_p
) ? L_NETWIDE
: L_ALL
, "Lost connect{} block for %s",
1346 exit_client(client_p
, client_p
, &me
, "Lost connect{} block");
1350 /* Next, send the initial handshake */
1351 SetHandshake(client_p
);
1353 /* the server may be linking based on certificate fingerprint now. --nenolod */
1354 sendto_one(client_p
, "PASS %s TS %d :%s",
1355 EmptyString(server_p
->spasswd
) ? "*" : server_p
->spasswd
, TS_CURRENT
, me
.id
);
1357 /* pass my info to the new server */
1358 send_capabilities(client_p
, default_server_capabs
1359 | (ServerConfCompressed(server_p
) ? CAP_ZIP_SUPPORTED
: 0)
1360 | (ServerConfTb(server_p
) ? CAP_TB
: 0));
1362 sendto_one(client_p
, "SERVER %s 1 :%s%s",
1364 ConfigServerHide
.hidden
? "(H) " : "", me
.info
);
1367 * If we've been marked dead because a send failed, just exit
1368 * here now and save everyone the trouble of us ever existing.
1370 if(IsAnyDead(client_p
))
1372 sendto_realops_snomask(SNO_GENERAL
, is_remote_connect(client_p
) ? L_NETWIDE
: L_ALL
,
1373 "%s went dead during handshake", client_p
->name
);
1374 exit_client(client_p
, client_p
, &me
, "Went dead during handshake");
1378 /* don't move to serv_list yet -- we haven't sent a burst! */
1380 /* If we get here, we're ok, so lets start reading some data */
1381 read_packet(F
, client_p
);