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");
129 static CNCB serv_connect_callback
;
130 static CNCB serv_connect_ssl_callback
;
133 * hunt_server - Do the basic thing in delivering the message (command)
134 * across the relays to the specific server (server) for
137 * Note: The command is a format string and *MUST* be
138 * of prefixed style (e.g. ":%s COMMAND %s ...").
139 * Command can have only max 8 parameters.
141 * server parv[server] is the parameter identifying the
145 * parv[server] is replaced with the pointer to the
146 * real servername from the matched client (I'm lazy
149 * returns: (see #defines)
152 hunt_server(struct Client
*client_p
, struct Client
*source_p
,
153 const char *command
, int server
, int parc
, const char *parv
[])
155 struct Client
*target_p
;
162 * Assume it's me, if no server
164 if(parc
<= server
|| EmptyString(parv
[server
]) ||
165 match(parv
[server
], me
.name
) || (strcmp(parv
[server
], me
.id
) == 0))
166 return (HUNTED_ISME
);
168 new = LOCAL_COPY(parv
[server
]);
171 * These are to pickup matches that would cause the following
172 * message to go in the wrong direction while doing quick fast
173 * non-matching lookups.
175 if(MyClient(source_p
))
176 target_p
= find_named_client(new);
178 target_p
= find_client(new);
181 if(target_p
->from
== source_p
->from
&& !MyConnect(target_p
))
185 wilds
= (strchr(new, '?') || strchr(new, '*'));
188 * Again, if there are no wild cards involved in the server
189 * name, use the hash lookup
191 if(!target_p
&& wilds
)
193 RB_DLINK_FOREACH(ptr
, global_serv_list
.head
)
195 if(match(new, ((struct Client
*) (ptr
->data
))->name
))
197 target_p
= ptr
->data
;
203 if(target_p
&& !IsRegistered(target_p
))
208 if(IsMe(target_p
) || MyClient(target_p
))
212 parv
[server
] = get_id(target_p
, target_p
);
214 sendto_one(target_p
, command
, get_id(source_p
, target_p
),
215 parv
[1], parv
[2], parv
[3], parv
[4], parv
[5], parv
[6], parv
[7], parv
[8]);
217 return (HUNTED_PASS
);
220 if(MyClient(source_p
) || !IsDigit(parv
[server
][0]))
221 sendto_one_numeric(source_p
, ERR_NOSUCHSERVER
,
222 form_str(ERR_NOSUCHSERVER
), parv
[server
]);
223 return (HUNTED_NOSUCH
);
227 * try_connections - scan through configuration and try new connections.
228 * Returns the calendar time when the next call to this
229 * function should be made latest. (No harm done if this
230 * is called earlier or later...)
233 try_connections(void *unused
)
235 struct Client
*client_p
;
236 struct server_conf
*server_p
= NULL
;
237 struct server_conf
*tmp_p
;
240 int connecting
= FALSE
;
244 RB_DLINK_FOREACH(ptr
, server_conf_list
.head
)
248 if(ServerConfIllegal(tmp_p
) || !ServerConfAutoconn(tmp_p
))
251 /* don't allow ssl connections if ssl isn't setup */
252 if(ServerConfSSL(tmp_p
) && (!ssl_ok
|| !get_ssld_count()))
255 cltmp
= tmp_p
->class;
258 * Skip this entry if the use of it is still on hold until
259 * future. Otherwise handle this entry (and set it on hold
260 * until next time). Will reset only hold times, if already
261 * made one successfull connection... [this algorithm is
262 * a bit fuzzy... -- msa >;) ]
264 if(tmp_p
->hold
> rb_current_time())
266 if(next
> tmp_p
->hold
|| next
== 0)
271 confrq
= get_con_freq(cltmp
);
272 tmp_p
->hold
= rb_current_time() + confrq
;
275 * Found a CONNECT config with port specified, scan clients
276 * and see if this server is already connected?
278 client_p
= find_server(NULL
, tmp_p
->name
);
280 if(!client_p
&& (CurrUsers(cltmp
) < MaxUsers(cltmp
)) && !connecting
)
284 /* We connect only one at time... */
288 if((next
> tmp_p
->hold
) || (next
== 0))
292 /* TODO: change this to set active flag to 0 when added to event! --Habeeb */
293 if(GlobalSetOptions
.autoconn
== 0)
299 /* move this connect entry to end.. */
300 rb_dlinkDelete(&server_p
->node
, &server_conf_list
);
301 rb_dlinkAddTail(server_p
, &server_p
->node
, &server_conf_list
);
304 * We used to only print this if serv_connect() actually
305 * suceeded, but since rb_tcp_connect() can call the callback
306 * immediately if there is an error, we were getting error messages
307 * in the wrong order. SO, we just print out the activated line,
308 * and let serv_connect() / serv_connect_callback() print an
309 * error afterwards if it fails.
312 sendto_realops_snomask(SNO_GENERAL
, L_ALL
,
313 "Connection to %s activated",
316 serv_connect(server_p
, 0);
320 check_server(const char *name
, struct Client
*client_p
)
322 struct server_conf
*server_p
= NULL
;
323 struct server_conf
*tmp_p
;
327 s_assert(NULL
!= client_p
);
331 if(!(client_p
->localClient
->passwd
))
334 if(strlen(name
) > HOSTLEN
)
337 RB_DLINK_FOREACH(ptr
, server_conf_list
.head
)
341 if(ServerConfIllegal(tmp_p
))
344 if(!match(tmp_p
->name
, name
))
349 /* XXX: Fix me for IPv6 */
350 /* XXX sockhost is the IPv4 ip as a string */
351 if(match(tmp_p
->host
, client_p
->host
) ||
352 match(tmp_p
->host
, client_p
->sockhost
))
358 if(ServerConfEncrypted(tmp_p
))
360 if(!strcmp(tmp_p
->passwd
, rb_crypt(client_p
->localClient
->passwd
,
369 else if(strcmp(tmp_p
->passwd
, client_p
->localClient
->passwd
))
375 if(!client_p
->certfp
|| strcasecmp(tmp_p
->certfp
, client_p
->certfp
) != 0)
387 if(ServerConfSSL(server_p
) && client_p
->localClient
->ssl_ctl
== NULL
)
392 attach_server_conf(client_p
, server_p
);
394 /* clear ZIP/TB if they support but we dont want them */
396 if(!ServerConfCompressed(server_p
))
398 ClearCap(client_p
, CAP_ZIP
);
400 if(!ServerConfTb(server_p
))
401 ClearCap(client_p
, CAP_TB
);
409 * inputs - Client pointer to send to
410 * - int flag of capabilities that this server has
412 * side effects - send the CAPAB line to a server -orabidoo
416 send_capabilities(struct Client
*client_p
, unsigned int cap_can_send
)
418 sendto_one(client_p
, "CAPAB :%s", capability_index_list(serv_capindex
, cap_can_send
));
422 burst_ban(struct Client
*client_p
)
425 struct ConfItem
*aconf
;
426 const char *type
, *oper
;
427 /* +5 for !,@,{,} and null */
428 char operbuf
[NICKLEN
+ USERLEN
+ HOSTLEN
+ HOSTLEN
+ 5];
432 melen
= strlen(me
.name
);
433 RB_DLINK_FOREACH(ptr
, prop_bans
.head
)
437 /* Skip expired stuff. */
438 if(aconf
->lifetime
< rb_current_time())
440 switch(aconf
->status
& ~CONF_ILLEGAL
)
442 case CONF_KILL
: type
= "K"; break;
443 case CONF_DLINE
: type
= "D"; break;
444 case CONF_XLINE
: type
= "X"; break;
445 case CONF_RESV_NICK
: type
= "R"; break;
446 case CONF_RESV_CHANNEL
: type
= "R"; break;
450 oper
= aconf
->info
.oper
;
451 if(aconf
->flags
& CONF_FLAGS_MYOPER
)
453 /* Our operator{} names may not be meaningful
454 * to other servers, so rewrite to our server
457 rb_strlcpy(operbuf
, aconf
->info
.oper
, sizeof buf
);
458 p
= strrchr(operbuf
, '{');
460 operbuf
+ sizeof operbuf
- p
> (ptrdiff_t)(melen
+ 2))
462 memcpy(p
+ 1, me
.name
, melen
);
468 sendto_one(client_p
, ":%s BAN %s %s %s %lu %d %d %s :%s%s%s",
471 aconf
->user
? aconf
->user
: "*", aconf
->host
,
472 (unsigned long)aconf
->created
,
473 (int)(aconf
->hold
- aconf
->created
),
474 (int)(aconf
->lifetime
- aconf
->created
),
477 aconf
->spasswd
? "|" : "",
478 aconf
->spasswd
? aconf
->spasswd
: "");
484 * input - client to burst to, channel name, list to burst, mode flag
486 * side effects - client is sent a list of +b, +e, or +I modes
489 burst_modes_TS6(struct Client
*client_p
, struct Channel
*chptr
,
490 rb_dlink_list
*list
, char flag
)
499 cur_len
= mlen
= rb_sprintf(buf
, ":%s BMASK %ld %s %c :",
500 me
.id
, (long) chptr
->channelts
, chptr
->chname
, flag
);
503 RB_DLINK_FOREACH(ptr
, list
->head
)
507 tlen
= strlen(banptr
->banstr
) + (banptr
->forward
? strlen(banptr
->forward
) + 1 : 0) + 1;
510 if(cur_len
+ tlen
> BUFSIZE
- 3)
512 /* the one we're trying to send doesnt fit at all! */
519 /* chop off trailing space and send.. */
521 sendto_one(client_p
, "%s", buf
);
527 rb_sprintf(t
, "%s$%s ", banptr
->banstr
, banptr
->forward
);
529 rb_sprintf(t
, "%s ", banptr
->banstr
);
534 /* cant ever exit the loop above without having modified buf,
535 * chop off trailing space and send.
538 sendto_one(client_p
, "%s", buf
);
544 * inputs - client (server) to send nick towards
545 * - client to send nick for
547 * side effects - NICK message is sent towards given client_p
550 burst_TS6(struct Client
*client_p
)
552 static char ubuf
[12];
553 struct Client
*target_p
;
554 struct Channel
*chptr
;
555 struct membership
*msptr
;
556 hook_data_client hclientinfo
;
557 hook_data_channel hchaninfo
;
564 hclientinfo
.client
= hchaninfo
.client
= client_p
;
566 RB_DLINK_FOREACH(ptr
, global_client_list
.head
)
568 target_p
= ptr
->data
;
570 if(!IsPerson(target_p
))
573 send_umode(NULL
, target_p
, 0, 0, ubuf
);
580 if(IsCapable(client_p
, CAP_EUID
))
581 sendto_one(client_p
, ":%s EUID %s %d %ld %s %s %s %s %s %s %s :%s",
582 target_p
->servptr
->id
, target_p
->name
,
583 target_p
->hopcount
+ 1,
584 (long) target_p
->tsinfo
, ubuf
,
585 target_p
->username
, target_p
->host
,
586 IsIPSpoof(target_p
) ? "0" : target_p
->sockhost
,
588 IsDynSpoof(target_p
) ? target_p
->orighost
: "*",
589 EmptyString(target_p
->user
->suser
) ? "*" : target_p
->user
->suser
,
592 sendto_one(client_p
, ":%s UID %s %d %ld %s %s %s %s %s :%s",
593 target_p
->servptr
->id
, target_p
->name
,
594 target_p
->hopcount
+ 1,
595 (long) target_p
->tsinfo
, ubuf
,
596 target_p
->username
, target_p
->host
,
597 IsIPSpoof(target_p
) ? "0" : target_p
->sockhost
,
598 target_p
->id
, target_p
->info
);
600 if(!EmptyString(target_p
->certfp
))
601 sendto_one(client_p
, ":%s ENCAP * CERTFP :%s",
602 use_id(target_p
), target_p
->certfp
);
604 if(!IsCapable(client_p
, CAP_EUID
))
606 if(IsDynSpoof(target_p
))
607 sendto_one(client_p
, ":%s ENCAP * REALHOST %s",
608 use_id(target_p
), target_p
->orighost
);
609 if(!EmptyString(target_p
->user
->suser
))
610 sendto_one(client_p
, ":%s ENCAP * LOGIN %s",
611 use_id(target_p
), target_p
->user
->suser
);
614 if(ConfigFileEntry
.burst_away
&& !EmptyString(target_p
->user
->away
))
615 sendto_one(client_p
, ":%s AWAY :%s",
617 target_p
->user
->away
);
619 hclientinfo
.target
= target_p
;
620 call_hook(h_burst_client
, &hclientinfo
);
623 RB_DLINK_FOREACH(ptr
, global_channel_list
.head
)
627 if(*chptr
->chname
!= '#')
630 cur_len
= mlen
= rb_sprintf(buf
, ":%s SJOIN %ld %s %s :", me
.id
,
631 (long) chptr
->channelts
, chptr
->chname
,
632 channel_modes(chptr
, client_p
));
636 RB_DLINK_FOREACH(uptr
, chptr
->members
.head
)
640 tlen
= strlen(use_id(msptr
->client_p
)) + 1;
646 if(cur_len
+ tlen
>= BUFSIZE
- 3)
649 sendto_one(client_p
, "%s", buf
);
654 rb_sprintf(t
, "%s%s ", find_channel_status(msptr
, 1),
655 use_id(msptr
->client_p
));
661 if (rb_dlink_list_length(&chptr
->members
) > 0)
663 /* remove trailing space */
666 sendto_one(client_p
, "%s", buf
);
668 if(rb_dlink_list_length(&chptr
->banlist
) > 0)
669 burst_modes_TS6(client_p
, chptr
, &chptr
->banlist
, 'b');
671 if(IsCapable(client_p
, CAP_EX
) &&
672 rb_dlink_list_length(&chptr
->exceptlist
) > 0)
673 burst_modes_TS6(client_p
, chptr
, &chptr
->exceptlist
, 'e');
675 if(IsCapable(client_p
, CAP_IE
) &&
676 rb_dlink_list_length(&chptr
->invexlist
) > 0)
677 burst_modes_TS6(client_p
, chptr
, &chptr
->invexlist
, 'I');
679 if(rb_dlink_list_length(&chptr
->quietlist
) > 0)
680 burst_modes_TS6(client_p
, chptr
, &chptr
->quietlist
, 'q');
682 if(IsCapable(client_p
, CAP_TB
) && chptr
->topic
!= NULL
)
683 sendto_one(client_p
, ":%s TB %s %ld %s%s:%s",
684 me
.id
, chptr
->chname
, (long) chptr
->topic_time
,
685 ConfigChannel
.burst_topicwho
? chptr
->topic_info
: "",
686 ConfigChannel
.burst_topicwho
? " " : "",
689 if(IsCapable(client_p
, CAP_MLOCK
))
690 sendto_one(client_p
, ":%s MLOCK %ld %s :%s",
691 me
.id
, (long) chptr
->channelts
, chptr
->chname
,
692 EmptyString(chptr
->mode_lock
) ? "" : chptr
->mode_lock
);
694 hchaninfo
.chptr
= chptr
;
695 call_hook(h_burst_channel
, &hchaninfo
);
698 hclientinfo
.target
= NULL
;
699 call_hook(h_burst_finished
, &hclientinfo
);
703 * show_capabilities - show current server capabilities
705 * inputs - pointer to an struct Client
706 * output - pointer to static string
707 * side effects - build up string representing capabilities of server listed
710 show_capabilities(struct Client
*target_p
)
712 static char msgbuf
[BUFSIZE
];
717 rb_strlcpy(msgbuf
, " TS6", sizeof(msgbuf
));
720 rb_strlcat(msgbuf
, " SSL", sizeof(msgbuf
));
722 if(!IsServer(target_p
) || !target_p
->serv
->caps
) /* short circuit if no caps */
725 rb_strlcat(msgbuf
, " ", sizeof(msgbuf
));
726 rb_strlcat(msgbuf
, capability_index_list(serv_capindex
, target_p
->serv
->caps
), sizeof(msgbuf
));
734 * inputs - pointer to a struct Client
739 server_estab(struct Client
*client_p
)
741 struct Client
*target_p
;
742 struct server_conf
*server_p
;
743 hook_data_client hdata
;
746 char note
[HOSTLEN
+ 15];
748 s_assert(NULL
!= client_p
);
752 host
= client_p
->name
;
754 if((server_p
= client_p
->localClient
->att_sconf
) == NULL
)
756 /* This shouldn't happen, better tell the ops... -A1kmm */
757 sendto_realops_snomask(SNO_GENERAL
, is_remote_connect(client_p
) ? L_NETWIDE
: L_ALL
,
758 "Warning: Lost connect{} block for server %s!", host
);
759 return exit_client(client_p
, client_p
, client_p
, "Lost connect{} block!");
762 /* We shouldn't have to check this, it should already done before
763 * server_estab is called. -A1kmm
765 if(client_p
->localClient
->passwd
)
767 memset(client_p
->localClient
->passwd
, 0, strlen(client_p
->localClient
->passwd
));
768 rb_free(client_p
->localClient
->passwd
);
769 client_p
->localClient
->passwd
= NULL
;
772 /* Its got identd , since its a server */
775 /* If there is something in the serv_list, it might be this
776 * connecting server..
778 if(!ServerInfo
.hub
&& serv_list
.head
)
780 if(client_p
!= serv_list
.head
->data
|| serv_list
.head
->next
)
782 ServerStats
.is_ref
++;
783 sendto_one(client_p
, "ERROR :I'm a leaf not a hub");
784 return exit_client(client_p
, client_p
, client_p
, "I'm a leaf");
788 if(IsUnknown(client_p
))
790 /* the server may be linking based on certificate fingerprint now. --nenolod */
791 sendto_one(client_p
, "PASS %s TS %d :%s",
792 EmptyString(server_p
->spasswd
) ? "*" : server_p
->spasswd
, TS_CURRENT
, me
.id
);
794 /* pass info to new server */
795 send_capabilities(client_p
, default_server_capabs
796 | (ServerConfCompressed(server_p
) ? CAP_ZIP_SUPPORTED
: 0)
797 | (ServerConfTb(server_p
) ? CAP_TB
: 0));
799 sendto_one(client_p
, "SERVER %s 1 :%s%s",
801 ConfigServerHide
.hidden
? "(H) " : "",
802 (me
.info
[0]) ? (me
.info
) : "IRCers United");
805 if(!rb_set_buffers(client_p
->localClient
->F
, READBUF_SIZE
))
806 ilog_error("rb_set_buffers failed for server");
808 /* Enable compression now */
809 if(IsCapable(client_p
, CAP_ZIP
))
811 start_zlib_session(client_p
);
813 sendto_one(client_p
, "SVINFO %d %d 0 :%ld", TS_CURRENT
, TS_MIN
, (long int)rb_current_time());
815 client_p
->servptr
= &me
;
817 if(IsAnyDead(client_p
))
818 return CLIENT_EXITED
;
822 rb_dlinkAdd(client_p
, &client_p
->lnode
, &me
.serv
->servers
);
823 rb_dlinkMoveNode(&client_p
->localClient
->tnode
, &unknown_list
, &serv_list
);
824 rb_dlinkAddTailAlloc(client_p
, &global_serv_list
);
827 add_to_id_hash(client_p
->id
, client_p
);
829 add_to_client_hash(client_p
->name
, client_p
);
830 /* doesnt duplicate client_p->serv if allocated this struct already */
831 make_server(client_p
);
833 client_p
->serv
->caps
= client_p
->localClient
->caps
;
835 if(client_p
->localClient
->fullcaps
)
837 client_p
->serv
->fullcaps
= rb_strdup(client_p
->localClient
->fullcaps
);
838 rb_free(client_p
->localClient
->fullcaps
);
839 client_p
->localClient
->fullcaps
= NULL
;
842 client_p
->serv
->nameinfo
= scache_connect(client_p
->name
, client_p
->info
, IsHidden(client_p
));
843 client_p
->localClient
->firsttime
= rb_current_time();
844 /* fixing eob timings.. -gnp */
846 if((rb_dlink_list_length(&lclient_list
) + rb_dlink_list_length(&serv_list
)) >
847 (unsigned long)MaxConnectionCount
)
848 MaxConnectionCount
= rb_dlink_list_length(&lclient_list
) +
849 rb_dlink_list_length(&serv_list
);
851 /* Show the real host/IP to admins */
852 sendto_realops_snomask(SNO_GENERAL
, L_ALL
,
853 "Link with %s established: (%s) link",
855 show_capabilities(client_p
));
857 ilog(L_SERVER
, "Link with %s established: (%s) link",
858 log_client_name(client_p
, SHOW_IP
), show_capabilities(client_p
));
861 hdata
.target
= client_p
;
862 call_hook(h_server_introduced
, &hdata
);
864 rb_snprintf(note
, sizeof(note
), "Server: %s", client_p
->name
);
865 rb_note(client_p
->localClient
->F
, note
);
868 ** Old sendto_serv_but_one() call removed because we now
869 ** need to send different names to different servers
870 ** (domain name matching) Send new server to other servers.
872 RB_DLINK_FOREACH(ptr
, serv_list
.head
)
874 target_p
= ptr
->data
;
876 if(target_p
== client_p
)
879 if(has_id(target_p
) && has_id(client_p
))
881 sendto_one(target_p
, ":%s SID %s 2 %s :%s%s",
882 me
.id
, client_p
->name
, client_p
->id
,
883 IsHidden(client_p
) ? "(H) " : "", client_p
->info
);
885 if(IsCapable(target_p
, CAP_ENCAP
) &&
886 !EmptyString(client_p
->serv
->fullcaps
))
887 sendto_one(target_p
, ":%s ENCAP * GCAP :%s",
888 client_p
->id
, client_p
->serv
->fullcaps
);
892 sendto_one(target_p
, ":%s SERVER %s 2 :%s%s",
893 me
.name
, client_p
->name
,
894 IsHidden(client_p
) ? "(H) " : "", client_p
->info
);
896 if(IsCapable(target_p
, CAP_ENCAP
) &&
897 !EmptyString(client_p
->serv
->fullcaps
))
898 sendto_one(target_p
, ":%s ENCAP * GCAP :%s",
899 client_p
->name
, client_p
->serv
->fullcaps
);
904 ** Pass on my client information to the new server
906 ** First, pass only servers (idea is that if the link gets
907 ** cancelled beacause the server was already there,
908 ** there are no NICK's to be cancelled...). Of course,
909 ** if cancellation occurs, all this info is sent anyway,
910 ** and I guess the link dies when a read is attempted...? --msa
912 ** Note: Link cancellation to occur at this point means
913 ** that at least two servers from my fragment are building
914 ** up connection this other fragment at the same time, it's
915 ** a race condition, not the normal way of operation...
917 ** ALSO NOTE: using the get_client_name for server names--
918 ** see previous *WARNING*!!! (Also, original inpath
921 RB_DLINK_FOREACH(ptr
, global_serv_list
.head
)
923 target_p
= ptr
->data
;
925 /* target_p->from == target_p for target_p == client_p */
926 if(IsMe(target_p
) || target_p
->from
== client_p
)
929 /* presumption, if target has an id, so does its uplink */
930 if(has_id(client_p
) && has_id(target_p
))
931 sendto_one(client_p
, ":%s SID %s %d %s :%s%s",
932 target_p
->servptr
->id
, target_p
->name
,
933 target_p
->hopcount
+ 1, target_p
->id
,
934 IsHidden(target_p
) ? "(H) " : "", target_p
->info
);
936 sendto_one(client_p
, ":%s SERVER %s %d :%s%s",
937 target_p
->servptr
->name
,
938 target_p
->name
, target_p
->hopcount
+ 1,
939 IsHidden(target_p
) ? "(H) " : "", target_p
->info
);
941 if(IsCapable(client_p
, CAP_ENCAP
) &&
942 !EmptyString(target_p
->serv
->fullcaps
))
943 sendto_one(client_p
, ":%s ENCAP * GCAP :%s",
944 get_id(target_p
, client_p
),
945 target_p
->serv
->fullcaps
);
948 if(IsCapable(client_p
, CAP_BAN
))
953 /* Always send a PING after connect burst is done */
954 sendto_one(client_p
, "PING :%s", get_id(&me
, client_p
));
956 free_pre_client(client_p
);
958 send_pop_queue(client_p
);
964 * New server connection code
965 * Based upon the stuff floating about in s_bsd.c
970 serv_connect_resolved(struct Client
*client_p
)
972 struct rb_sockaddr_storage myipnum
;
973 char vhoststr
[HOSTIPLEN
];
974 struct server_conf
*server_p
;
977 if((server_p
= client_p
->localClient
->att_sconf
) == NULL
)
979 sendto_realops_snomask(SNO_GENERAL
, is_remote_connect(client_p
) ? L_NETWIDE
: L_ALL
, "Lost connect{} block for %s",
981 exit_client(client_p
, client_p
, &me
, "Lost connect{} block");
986 if(client_p
->localClient
->ip
.ss_family
== AF_INET6
)
987 port
= ntohs(((struct sockaddr_in6
*)&client_p
->localClient
->ip
)->sin6_port
);
990 port
= ntohs(((struct sockaddr_in
*)&client_p
->localClient
->ip
)->sin_port
);
992 if(ServerConfVhosted(server_p
))
994 memcpy(&myipnum
, &server_p
->my_ipnum
, sizeof(myipnum
));
995 ((struct sockaddr_in
*)&myipnum
)->sin_port
= 0;
996 myipnum
.ss_family
= server_p
->aftype
;
999 else if(server_p
->aftype
== AF_INET
&& ServerInfo
.specific_ipv4_vhost
)
1001 memcpy(&myipnum
, &ServerInfo
.ip
, sizeof(myipnum
));
1002 ((struct sockaddr_in
*)&myipnum
)->sin_port
= 0;
1003 myipnum
.ss_family
= AF_INET
;
1004 SET_SS_LEN(&myipnum
, sizeof(struct sockaddr_in
));
1008 else if((server_p
->aftype
== AF_INET6
) && ServerInfo
.specific_ipv6_vhost
)
1010 memcpy(&myipnum
, &ServerInfo
.ip6
, sizeof(myipnum
));
1011 ((struct sockaddr_in6
*)&myipnum
)->sin6_port
= 0;
1012 myipnum
.ss_family
= AF_INET6
;
1013 SET_SS_LEN(&myipnum
, sizeof(struct sockaddr_in6
));
1019 ilog(L_SERVER
, "Connecting to %s[%s] port %d (%s)", client_p
->name
, client_p
->sockhost
, port
,
1021 server_p
->aftype
== AF_INET6
? "IPv6" :
1023 (server_p
->aftype
== AF_INET
? "IPv4" : "?"));
1025 if(ServerConfSSL(server_p
))
1027 rb_connect_tcp(client_p
->localClient
->F
, (struct sockaddr
*)&client_p
->localClient
->ip
,
1028 NULL
, 0, serv_connect_ssl_callback
,
1029 client_p
, ConfigFileEntry
.connect_timeout
);
1032 rb_connect_tcp(client_p
->localClient
->F
, (struct sockaddr
*)&client_p
->localClient
->ip
,
1033 NULL
, 0, serv_connect_callback
,
1034 client_p
, ConfigFileEntry
.connect_timeout
);
1039 rb_inet_ntop_sock((struct sockaddr
*)&myipnum
, vhoststr
, sizeof vhoststr
);
1040 ilog(L_SERVER
, "Connecting to %s[%s] port %d (%s) (vhost %s)", client_p
->name
, client_p
->sockhost
, port
,
1042 server_p
->aftype
== AF_INET6
? "IPv6" :
1044 (server_p
->aftype
== AF_INET
? "IPv4" : "?"), vhoststr
);
1047 if(ServerConfSSL(server_p
))
1048 rb_connect_tcp(client_p
->localClient
->F
, (struct sockaddr
*)&client_p
->localClient
->ip
,
1049 (struct sockaddr
*) &myipnum
,
1050 GET_SS_LEN(&myipnum
), serv_connect_ssl_callback
, client_p
,
1051 ConfigFileEntry
.connect_timeout
);
1053 rb_connect_tcp(client_p
->localClient
->F
, (struct sockaddr
*)&client_p
->localClient
->ip
,
1054 (struct sockaddr
*) &myipnum
,
1055 GET_SS_LEN(&myipnum
), serv_connect_callback
, client_p
,
1056 ConfigFileEntry
.connect_timeout
);
1062 serv_connect_dns_callback(void *vptr
, struct DNSReply
*reply
)
1064 struct Client
*client_p
= vptr
;
1067 rb_free(client_p
->localClient
->dnsquery
);
1068 client_p
->localClient
->dnsquery
= NULL
;
1072 sendto_realops_snomask(SNO_GENERAL
, is_remote_connect(client_p
) ? L_NETWIDE
: L_ALL
, "Cannot resolve hostname for %s",
1074 ilog(L_SERVER
, "Cannot resolve hostname for %s",
1075 log_client_name(client_p
, HIDE_IP
));
1076 exit_client(client_p
, client_p
, &me
, "Cannot resolve hostname");
1080 if(reply
->addr
.ss_family
== AF_INET6
)
1081 port
= ((struct sockaddr_in6
*)&client_p
->localClient
->ip
)->sin6_port
;
1084 port
= ((struct sockaddr_in
*)&client_p
->localClient
->ip
)->sin_port
;
1085 memcpy(&client_p
->localClient
->ip
, &reply
->addr
, sizeof(client_p
->localClient
->ip
));
1087 if(reply
->addr
.ss_family
== AF_INET6
)
1088 ((struct sockaddr_in6
*)&client_p
->localClient
->ip
)->sin6_port
= port
;
1091 ((struct sockaddr_in
*)&client_p
->localClient
->ip
)->sin_port
= port
;
1092 /* Set sockhost properly now -- jilles */
1093 rb_inet_ntop_sock((struct sockaddr
*)&client_p
->localClient
->ip
,
1094 client_p
->sockhost
, sizeof client_p
->sockhost
);
1095 serv_connect_resolved(client_p
);
1099 * serv_connect() - initiate a server connection
1101 * inputs - pointer to conf
1102 * - pointer to client doing the connet
1106 * This code initiates a connection to a server. It first checks to make
1107 * sure the given server exists. If this is the case, it creates a socket,
1108 * creates a client, saves the socket information in the client, and
1109 * initiates a connection to the server through rb_connect_tcp(). The
1110 * completion of this goes through serv_completed_connection().
1112 * We return 1 if the connection is attempted, since we don't know whether
1113 * it suceeded or not, and 0 if it fails in here somewhere.
1116 serv_connect(struct server_conf
*server_p
, struct Client
*by
)
1118 struct Client
*client_p
;
1119 struct rb_sockaddr_storage theiripnum
;
1121 char note
[HOSTLEN
+ 10];
1123 s_assert(server_p
!= NULL
);
1124 if(server_p
== NULL
)
1128 * Make sure this server isn't already connected
1130 if((client_p
= find_server(NULL
, server_p
->name
)))
1132 sendto_realops_snomask(SNO_GENERAL
, L_ALL
,
1133 "Server %s already present from %s",
1134 server_p
->name
, client_p
->name
);
1135 if(by
&& IsPerson(by
) && !MyClient(by
))
1136 sendto_one_notice(by
, ":Server %s already present from %s",
1137 server_p
->name
, client_p
->name
);
1141 /* create a socket for the server connection */
1142 if((F
= rb_socket(server_p
->aftype
, SOCK_STREAM
, 0, NULL
)) == NULL
)
1144 ilog_error("opening a stream socket");
1148 rb_snprintf(note
, sizeof note
, "Server: %s", server_p
->name
);
1151 /* Create a local client */
1152 client_p
= make_client(NULL
);
1154 /* Copy in the server, hostname, fd
1155 * The sockhost may be a hostname, this will be corrected later
1158 rb_strlcpy(client_p
->name
, server_p
->name
, sizeof(client_p
->name
));
1159 rb_strlcpy(client_p
->host
, server_p
->host
, sizeof(client_p
->host
));
1160 rb_strlcpy(client_p
->sockhost
, server_p
->host
, sizeof(client_p
->sockhost
));
1161 client_p
->localClient
->F
= F
;
1162 add_to_cli_fd_hash(client_p
);
1165 * Set up the initial server evilness, ripped straight from
1166 * connect_server(), so don't blame me for it being evil.
1170 if(!rb_set_buffers(client_p
->localClient
->F
, READBUF_SIZE
))
1172 ilog_error("setting the buffer size for a server connection");
1176 * Attach config entries to client here rather than in
1177 * serv_connect_callback(). This to avoid null pointer references.
1179 attach_server_conf(client_p
, server_p
);
1182 * at this point we have a connection in progress and C/N lines
1183 * attached to the client, the socket info should be saved in the
1184 * client and it should either be resolved or have a valid address.
1186 * The socket has been connected or connect is in progress.
1188 make_server(client_p
);
1189 if(by
&& IsPerson(by
))
1191 strcpy(client_p
->serv
->by
, by
->name
);
1192 if(client_p
->serv
->user
)
1193 free_user(client_p
->serv
->user
, NULL
);
1194 client_p
->serv
->user
= by
->user
;
1199 strcpy(client_p
->serv
->by
, "AutoConn.");
1200 if(client_p
->serv
->user
)
1201 free_user(client_p
->serv
->user
, NULL
);
1202 client_p
->serv
->user
= NULL
;
1204 SetConnecting(client_p
);
1205 rb_dlinkAddTail(client_p
, &client_p
->node
, &global_client_list
);
1207 if (rb_inet_pton_sock(server_p
->host
, (struct sockaddr
*)&theiripnum
) > 0)
1209 memcpy(&client_p
->localClient
->ip
, &theiripnum
, sizeof(client_p
->localClient
->ip
));
1211 if(theiripnum
.ss_family
== AF_INET6
)
1212 ((struct sockaddr_in6
*)&client_p
->localClient
->ip
)->sin6_port
= htons(server_p
->port
);
1215 ((struct sockaddr_in
*)&client_p
->localClient
->ip
)->sin_port
= htons(server_p
->port
);
1217 return serv_connect_resolved(client_p
);
1222 if(theiripnum
.ss_family
== AF_INET6
)
1223 ((struct sockaddr_in6
*)&client_p
->localClient
->ip
)->sin6_port
= htons(server_p
->port
);
1226 ((struct sockaddr_in
*)&client_p
->localClient
->ip
)->sin_port
= htons(server_p
->port
);
1228 client_p
->localClient
->dnsquery
= rb_malloc(sizeof(struct DNSQuery
));
1229 client_p
->localClient
->dnsquery
->ptr
= client_p
;
1230 client_p
->localClient
->dnsquery
->callback
= serv_connect_dns_callback
;
1231 gethost_byname_type(server_p
->host
, client_p
->localClient
->dnsquery
,
1233 server_p
->aftype
== AF_INET6
? T_AAAA
:
1241 serv_connect_ssl_callback(rb_fde_t
*F
, int status
, void *data
)
1243 struct Client
*client_p
= data
;
1245 rb_connect_sockaddr(F
, (struct sockaddr
*)&client_p
->localClient
->ip
, sizeof(client_p
->localClient
->ip
));
1248 /* Print error message, just like non-SSL. */
1249 serv_connect_callback(F
, status
, data
);
1252 if(rb_socketpair(AF_UNIX
, SOCK_STREAM
, 0, &xF
[0], &xF
[1], "Outgoing ssld connection") == -1)
1254 ilog_error("rb_socketpair failed for server");
1255 serv_connect_callback(F
, RB_ERROR
, data
);
1259 del_from_cli_fd_hash(client_p
);
1260 client_p
->localClient
->F
= xF
[0];
1261 add_to_cli_fd_hash(client_p
);
1263 client_p
->localClient
->ssl_ctl
= start_ssld_connect(F
, xF
[1], rb_get_fd(xF
[0]));
1265 serv_connect_callback(client_p
->localClient
->F
, RB_OK
, client_p
);
1269 * serv_connect_callback() - complete a server connection.
1271 * This routine is called after the server connection attempt has
1272 * completed. If unsucessful, an error is sent to ops and the client
1273 * is closed. If sucessful, it goes through the initialisation/check
1274 * procedures, the capabilities are sent, and the socket is then
1275 * marked for reading.
1278 serv_connect_callback(rb_fde_t
*F
, int status
, void *data
)
1280 struct Client
*client_p
= data
;
1281 struct server_conf
*server_p
;
1284 /* First, make sure its a real client! */
1285 s_assert(client_p
!= NULL
);
1286 s_assert(client_p
->localClient
->F
== F
);
1288 if(client_p
== NULL
)
1291 /* while we were waiting for the callback, its possible this already
1294 if(find_server(NULL
, client_p
->name
) != NULL
)
1296 exit_client(client_p
, client_p
, &me
, "Server Exists");
1300 if(client_p
->localClient
->ssl_ctl
== NULL
)
1301 rb_connect_sockaddr(F
, (struct sockaddr
*)&client_p
->localClient
->ip
, sizeof(client_p
->localClient
->ip
));
1303 /* Check the status */
1306 /* COMM_ERR_TIMEOUT wont have an errno associated with it,
1307 * the others will.. --fl
1309 if(status
== RB_ERR_TIMEOUT
)
1311 sendto_realops_snomask(SNO_GENERAL
, is_remote_connect(client_p
) ? L_NETWIDE
: L_ALL
,
1312 "Error connecting to %s[%s]: %s",
1316 ilog(L_SERVER
, "Error connecting to %s[%s]: %s",
1317 client_p
->name
, client_p
->sockhost
,
1322 errstr
= strerror(rb_get_sockerr(F
));
1323 sendto_realops_snomask(SNO_GENERAL
, is_remote_connect(client_p
) ? L_NETWIDE
: L_ALL
,
1324 "Error connecting to %s[%s]: %s (%s)",
1327 rb_errstr(status
), errstr
);
1328 ilog(L_SERVER
, "Error connecting to %s[%s]: %s (%s)",
1329 client_p
->name
, client_p
->sockhost
,
1330 rb_errstr(status
), errstr
);
1333 exit_client(client_p
, client_p
, &me
, rb_errstr(status
));
1337 /* COMM_OK, so continue the connection procedure */
1338 /* Get the C/N lines */
1339 if((server_p
= client_p
->localClient
->att_sconf
) == NULL
)
1341 sendto_realops_snomask(SNO_GENERAL
, is_remote_connect(client_p
) ? L_NETWIDE
: L_ALL
, "Lost connect{} block for %s",
1343 exit_client(client_p
, client_p
, &me
, "Lost connect{} block");
1347 /* Next, send the initial handshake */
1348 SetHandshake(client_p
);
1350 /* the server may be linking based on certificate fingerprint now. --nenolod */
1351 sendto_one(client_p
, "PASS %s TS %d :%s",
1352 EmptyString(server_p
->spasswd
) ? "*" : server_p
->spasswd
, TS_CURRENT
, me
.id
);
1354 /* pass my info to the new server */
1355 send_capabilities(client_p
, default_server_capabs
1356 | (ServerConfCompressed(server_p
) ? CAP_ZIP_SUPPORTED
: 0)
1357 | (ServerConfTb(server_p
) ? CAP_TB
: 0));
1359 sendto_one(client_p
, "SERVER %s 1 :%s%s",
1361 ConfigServerHide
.hidden
? "(H) " : "", me
.info
);
1364 * If we've been marked dead because a send failed, just exit
1365 * here now and save everyone the trouble of us ever existing.
1367 if(IsAnyDead(client_p
))
1369 sendto_realops_snomask(SNO_GENERAL
, is_remote_connect(client_p
) ? L_NETWIDE
: L_ALL
,
1370 "%s went dead during handshake", client_p
->name
);
1371 exit_client(client_p
, client_p
, &me
, "Went dead during handshake");
1375 /* don't move to serv_list yet -- we haven't sent a burst! */
1377 /* If we get here, we're ok, so lets start reading some data */
1378 read_packet(F
, client_p
);