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"
61 #define INADDR_NONE ((unsigned int) 0xffffffff)
64 int MaxConnectionCount
= 1;
65 int MaxClientCount
= 1;
66 int refresh_user_links
= 0;
68 static char buf
[BUFSIZE
];
71 * list of recognized server capabilities. "TS" is not on the list
72 * because all servers that we talk to already do TS, and the kludged
73 * extra argument to "PASS" takes care of checking that. -orabidoo
75 struct CapabilityIndex
*serv_capindex
= NULL
;
84 unsigned int CAP_KNOCK
;
86 unsigned int CAP_UNKLN
;
87 unsigned int CAP_CLUSTER
;
88 unsigned int CAP_ENCAP
;
90 unsigned int CAP_SERVICE
;
91 unsigned int CAP_RSFNC
;
92 unsigned int CAP_SAVE
;
93 unsigned int CAP_EUID
;
94 unsigned int CAP_EOPMOD
;
96 unsigned int CAP_MLOCK
;
99 * initialize our builtin capability table. --nenolod
102 init_builtin_capabs(void)
104 serv_capindex
= capability_index_create("server capabilities");
106 /* These two are not set via CAPAB/GCAP keywords. */
107 CAP_CAP
= capability_put_anonymous(serv_capindex
);
108 CAP_TS6
= capability_put_anonymous(serv_capindex
);
110 CAP_QS
= capability_put(serv_capindex
, "QS");
111 CAP_EX
= capability_put(serv_capindex
, "EX");
112 CAP_CHW
= capability_put(serv_capindex
, "CHW");
113 CAP_IE
= capability_put(serv_capindex
, "IE");
114 CAP_KLN
= capability_put(serv_capindex
, "KLN");
115 CAP_KNOCK
= capability_put(serv_capindex
, "KNOCK");
116 CAP_ZIP
= capability_put(serv_capindex
, "ZIP");
117 CAP_TB
= capability_put(serv_capindex
, "TB");
118 CAP_UNKLN
= capability_put(serv_capindex
, "UNKLN");
119 CAP_CLUSTER
= capability_put(serv_capindex
, "CLUSTER");
120 CAP_ENCAP
= capability_put(serv_capindex
, "ENCAP");
121 CAP_SERVICE
= capability_put(serv_capindex
, "SERVICES");
122 CAP_RSFNC
= capability_put(serv_capindex
, "RSFNC");
123 CAP_SAVE
= capability_put(serv_capindex
, "SAVE");
124 CAP_EUID
= capability_put(serv_capindex
, "EUID");
125 CAP_EOPMOD
= capability_put(serv_capindex
, "EOPMOD");
126 CAP_BAN
= capability_put(serv_capindex
, "BAN");
127 CAP_MLOCK
= capability_put(serv_capindex
, "MLOCK");
129 capability_require(serv_capindex
, "QS");
130 capability_require(serv_capindex
, "EX");
131 capability_require(serv_capindex
, "IE");
132 capability_require(serv_capindex
, "ENCAP");
135 static CNCB serv_connect_callback
;
136 static CNCB serv_connect_ssl_callback
;
139 * hunt_server - Do the basic thing in delivering the message (command)
140 * across the relays to the specific server (server) for
143 * Note: The command is a format string and *MUST* be
144 * of prefixed style (e.g. ":%s COMMAND %s ...").
145 * Command can have only max 8 parameters.
147 * server parv[server] is the parameter identifying the
151 * parv[server] is replaced with the pointer to the
152 * real servername from the matched client (I'm lazy
155 * returns: (see #defines)
158 hunt_server(struct Client
*client_p
, struct Client
*source_p
,
159 const char *command
, int server
, int parc
, const char *parv
[])
161 struct Client
*target_p
;
168 * Assume it's me, if no server
170 if(parc
<= server
|| EmptyString(parv
[server
]) ||
171 match(parv
[server
], me
.name
) || (strcmp(parv
[server
], me
.id
) == 0))
172 return (HUNTED_ISME
);
174 new = LOCAL_COPY(parv
[server
]);
177 * These are to pickup matches that would cause the following
178 * message to go in the wrong direction while doing quick fast
179 * non-matching lookups.
181 if(MyClient(source_p
))
182 target_p
= find_named_client(new);
184 target_p
= find_client(new);
187 if(target_p
->from
== source_p
->from
&& !MyConnect(target_p
))
191 wilds
= (strchr(new, '?') || strchr(new, '*'));
194 * Again, if there are no wild cards involved in the server
195 * name, use the hash lookup
197 if(!target_p
&& wilds
)
199 RB_DLINK_FOREACH(ptr
, global_serv_list
.head
)
201 if(match(new, ((struct Client
*) (ptr
->data
))->name
))
203 target_p
= ptr
->data
;
209 if(target_p
&& !IsRegistered(target_p
))
214 if(IsMe(target_p
) || MyClient(target_p
))
218 parv
[server
] = get_id(target_p
, target_p
);
220 sendto_one(target_p
, command
, get_id(source_p
, target_p
),
221 parv
[1], parv
[2], parv
[3], parv
[4], parv
[5], parv
[6], parv
[7], parv
[8]);
223 return (HUNTED_PASS
);
226 if(MyClient(source_p
) || !IsDigit(parv
[server
][0]))
227 sendto_one_numeric(source_p
, ERR_NOSUCHSERVER
,
228 form_str(ERR_NOSUCHSERVER
), parv
[server
]);
229 return (HUNTED_NOSUCH
);
233 * try_connections - scan through configuration and try new connections.
234 * Returns the calendar time when the next call to this
235 * function should be made latest. (No harm done if this
236 * is called earlier or later...)
239 try_connections(void *unused
)
241 struct Client
*client_p
;
242 struct server_conf
*server_p
= NULL
;
243 struct server_conf
*tmp_p
;
246 int connecting
= FALSE
;
250 RB_DLINK_FOREACH(ptr
, server_conf_list
.head
)
254 if(ServerConfIllegal(tmp_p
) || !ServerConfAutoconn(tmp_p
))
257 /* don't allow ssl connections if ssl isn't setup */
258 if(ServerConfSSL(tmp_p
) && (!ssl_ok
|| !get_ssld_count()))
261 cltmp
= tmp_p
->class;
264 * Skip this entry if the use of it is still on hold until
265 * future. Otherwise handle this entry (and set it on hold
266 * until next time). Will reset only hold times, if already
267 * made one successfull connection... [this algorithm is
268 * a bit fuzzy... -- msa >;) ]
270 if(tmp_p
->hold
> rb_current_time())
272 if(next
> tmp_p
->hold
|| next
== 0)
277 confrq
= get_con_freq(cltmp
);
278 tmp_p
->hold
= rb_current_time() + confrq
;
281 * Found a CONNECT config with port specified, scan clients
282 * and see if this server is already connected?
284 client_p
= find_server(NULL
, tmp_p
->name
);
286 if(!client_p
&& (CurrUsers(cltmp
) < MaxUsers(cltmp
)) && !connecting
)
290 /* We connect only one at time... */
294 if((next
> tmp_p
->hold
) || (next
== 0))
298 /* TODO: change this to set active flag to 0 when added to event! --Habeeb */
299 if(GlobalSetOptions
.autoconn
== 0)
305 /* move this connect entry to end.. */
306 rb_dlinkDelete(&server_p
->node
, &server_conf_list
);
307 rb_dlinkAddTail(server_p
, &server_p
->node
, &server_conf_list
);
310 * We used to only print this if serv_connect() actually
311 * suceeded, but since rb_tcp_connect() can call the callback
312 * immediately if there is an error, we were getting error messages
313 * in the wrong order. SO, we just print out the activated line,
314 * and let serv_connect() / serv_connect_callback() print an
315 * error afterwards if it fails.
318 sendto_realops_snomask(SNO_GENERAL
, L_ALL
,
319 "Connection to %s activated",
322 serv_connect(server_p
, 0);
326 check_server(const char *name
, struct Client
*client_p
)
328 struct server_conf
*server_p
= NULL
;
329 struct server_conf
*tmp_p
;
334 s_assert(NULL
!= client_p
);
338 if(!(client_p
->localClient
->passwd
))
341 if(strlen(name
) > HOSTLEN
)
344 RB_DLINK_FOREACH(ptr
, server_conf_list
.head
)
348 if(ServerConfIllegal(tmp_p
))
351 if(!match(tmp_p
->name
, name
))
356 /* XXX: Fix me for IPv6 */
357 /* XXX sockhost is the IPv4 ip as a string */
358 if(match(tmp_p
->host
, client_p
->host
) ||
359 match(tmp_p
->host
, client_p
->sockhost
))
365 if(ServerConfEncrypted(tmp_p
))
367 encr
= rb_crypt(client_p
->localClient
->passwd
,
369 if(encr
!= NULL
&& !strcmp(tmp_p
->passwd
, encr
))
377 else if(strcmp(tmp_p
->passwd
, client_p
->localClient
->passwd
))
383 if(!client_p
->certfp
|| strcasecmp(tmp_p
->certfp
, client_p
->certfp
) != 0)
395 if(ServerConfSSL(server_p
) && client_p
->localClient
->ssl_ctl
== NULL
)
400 attach_server_conf(client_p
, server_p
);
402 /* clear ZIP/TB if they support but we dont want them */
404 if(!ServerConfCompressed(server_p
))
406 ClearCap(client_p
, CAP_ZIP
);
408 if(!ServerConfTb(server_p
))
409 ClearCap(client_p
, CAP_TB
);
417 * inputs - Client pointer to send to
418 * - int flag of capabilities that this server has
420 * side effects - send the CAPAB line to a server -orabidoo
424 send_capabilities(struct Client
*client_p
, unsigned int cap_can_send
)
426 sendto_one(client_p
, "CAPAB :%s", capability_index_list(serv_capindex
, cap_can_send
));
430 burst_ban(struct Client
*client_p
)
433 struct ConfItem
*aconf
;
434 const char *type
, *oper
;
435 /* +5 for !,@,{,} and null */
436 char operbuf
[NICKLEN
+ USERLEN
+ HOSTLEN
+ HOSTLEN
+ 5];
440 melen
= strlen(me
.name
);
441 RB_DLINK_FOREACH(ptr
, prop_bans
.head
)
445 /* Skip expired stuff. */
446 if(aconf
->lifetime
< rb_current_time())
448 switch(aconf
->status
& ~CONF_ILLEGAL
)
450 case CONF_KILL
: type
= "K"; break;
451 case CONF_DLINE
: type
= "D"; break;
452 case CONF_XLINE
: type
= "X"; break;
453 case CONF_RESV_NICK
: type
= "R"; break;
454 case CONF_RESV_CHANNEL
: type
= "R"; break;
458 oper
= aconf
->info
.oper
;
459 if(aconf
->flags
& CONF_FLAGS_MYOPER
)
461 /* Our operator{} names may not be meaningful
462 * to other servers, so rewrite to our server
465 rb_strlcpy(operbuf
, aconf
->info
.oper
, sizeof buf
);
466 p
= strrchr(operbuf
, '{');
468 operbuf
+ sizeof operbuf
- p
> (ptrdiff_t)(melen
+ 2))
470 memcpy(p
+ 1, me
.name
, melen
);
476 sendto_one(client_p
, ":%s BAN %s %s %s %lu %d %d %s :%s%s%s",
479 aconf
->user
? aconf
->user
: "*", aconf
->host
,
480 (unsigned long)aconf
->created
,
481 (int)(aconf
->hold
- aconf
->created
),
482 (int)(aconf
->lifetime
- aconf
->created
),
485 aconf
->spasswd
? "|" : "",
486 aconf
->spasswd
? aconf
->spasswd
: "");
492 * input - client to burst to, channel name, list to burst, mode flag
494 * side effects - client is sent a list of +b, +e, or +I modes
497 burst_modes_TS6(struct Client
*client_p
, struct Channel
*chptr
,
498 rb_dlink_list
*list
, char flag
)
507 cur_len
= mlen
= rb_sprintf(buf
, ":%s BMASK %ld %s %c :",
508 me
.id
, (long) chptr
->channelts
, chptr
->chname
, flag
);
511 RB_DLINK_FOREACH(ptr
, list
->head
)
515 tlen
= strlen(banptr
->banstr
) + (banptr
->forward
? strlen(banptr
->forward
) + 1 : 0) + 1;
518 if(cur_len
+ tlen
> BUFSIZE
- 3)
520 /* the one we're trying to send doesnt fit at all! */
527 /* chop off trailing space and send.. */
529 sendto_one(client_p
, "%s", buf
);
535 rb_sprintf(t
, "%s$%s ", banptr
->banstr
, banptr
->forward
);
537 rb_sprintf(t
, "%s ", banptr
->banstr
);
542 /* cant ever exit the loop above without having modified buf,
543 * chop off trailing space and send.
546 sendto_one(client_p
, "%s", buf
);
552 * inputs - client (server) to send nick towards
553 * - client to send nick for
555 * side effects - NICK message is sent towards given client_p
558 burst_TS6(struct Client
*client_p
)
561 struct Client
*target_p
;
562 struct Channel
*chptr
;
563 struct membership
*msptr
;
564 hook_data_client hclientinfo
;
565 hook_data_channel hchaninfo
;
572 hclientinfo
.client
= hchaninfo
.client
= client_p
;
574 RB_DLINK_FOREACH(ptr
, global_client_list
.head
)
576 target_p
= ptr
->data
;
578 if(!IsPerson(target_p
))
581 send_umode(NULL
, target_p
, 0, ubuf
);
588 if(IsCapable(client_p
, CAP_EUID
))
589 sendto_one(client_p
, ":%s EUID %s %d %ld %s %s %s %s %s %s %s :%s",
590 target_p
->servptr
->id
, target_p
->name
,
591 target_p
->hopcount
+ 1,
592 (long) target_p
->tsinfo
, ubuf
,
593 target_p
->username
, target_p
->host
,
594 IsIPSpoof(target_p
) ? "0" : target_p
->sockhost
,
596 IsDynSpoof(target_p
) ? target_p
->orighost
: "*",
597 EmptyString(target_p
->user
->suser
) ? "*" : target_p
->user
->suser
,
600 sendto_one(client_p
, ":%s UID %s %d %ld %s %s %s %s %s :%s",
601 target_p
->servptr
->id
, target_p
->name
,
602 target_p
->hopcount
+ 1,
603 (long) target_p
->tsinfo
, ubuf
,
604 target_p
->username
, target_p
->host
,
605 IsIPSpoof(target_p
) ? "0" : target_p
->sockhost
,
606 target_p
->id
, target_p
->info
);
608 if(!EmptyString(target_p
->certfp
))
609 sendto_one(client_p
, ":%s ENCAP * CERTFP :%s",
610 use_id(target_p
), target_p
->certfp
);
612 if(!IsCapable(client_p
, CAP_EUID
))
614 if(IsDynSpoof(target_p
))
615 sendto_one(client_p
, ":%s ENCAP * REALHOST %s",
616 use_id(target_p
), target_p
->orighost
);
617 if(!EmptyString(target_p
->user
->suser
))
618 sendto_one(client_p
, ":%s ENCAP * LOGIN %s",
619 use_id(target_p
), target_p
->user
->suser
);
622 if(ConfigFileEntry
.burst_away
&& !EmptyString(target_p
->user
->away
))
623 sendto_one(client_p
, ":%s AWAY :%s",
625 target_p
->user
->away
);
627 hclientinfo
.target
= target_p
;
628 call_hook(h_burst_client
, &hclientinfo
);
631 RB_DLINK_FOREACH(ptr
, global_channel_list
.head
)
635 if(*chptr
->chname
!= '#')
638 cur_len
= mlen
= rb_sprintf(buf
, ":%s SJOIN %ld %s %s :", me
.id
,
639 (long) chptr
->channelts
, chptr
->chname
,
640 channel_modes(chptr
, client_p
));
644 RB_DLINK_FOREACH(uptr
, chptr
->members
.head
)
648 tlen
= strlen(use_id(msptr
->client_p
)) + 1;
654 if(cur_len
+ tlen
>= BUFSIZE
- 3)
657 sendto_one(client_p
, "%s", buf
);
662 rb_sprintf(t
, "%s%s ", find_channel_status(msptr
, 1),
663 use_id(msptr
->client_p
));
669 if (rb_dlink_list_length(&chptr
->members
) > 0)
671 /* remove trailing space */
674 sendto_one(client_p
, "%s", buf
);
676 if(rb_dlink_list_length(&chptr
->banlist
) > 0)
677 burst_modes_TS6(client_p
, chptr
, &chptr
->banlist
, 'b');
679 if(IsCapable(client_p
, CAP_EX
) &&
680 rb_dlink_list_length(&chptr
->exceptlist
) > 0)
681 burst_modes_TS6(client_p
, chptr
, &chptr
->exceptlist
, 'e');
683 if(IsCapable(client_p
, CAP_IE
) &&
684 rb_dlink_list_length(&chptr
->invexlist
) > 0)
685 burst_modes_TS6(client_p
, chptr
, &chptr
->invexlist
, 'I');
687 if(rb_dlink_list_length(&chptr
->quietlist
) > 0)
688 burst_modes_TS6(client_p
, chptr
, &chptr
->quietlist
, 'q');
690 if(IsCapable(client_p
, CAP_TB
) && chptr
->topic
!= NULL
)
691 sendto_one(client_p
, ":%s TB %s %ld %s%s:%s",
692 me
.id
, chptr
->chname
, (long) chptr
->topic_time
,
693 ConfigChannel
.burst_topicwho
? chptr
->topic_info
: "",
694 ConfigChannel
.burst_topicwho
? " " : "",
697 if(IsCapable(client_p
, CAP_MLOCK
))
698 sendto_one(client_p
, ":%s MLOCK %ld %s :%s",
699 me
.id
, (long) chptr
->channelts
, chptr
->chname
,
700 EmptyString(chptr
->mode_lock
) ? "" : chptr
->mode_lock
);
702 hchaninfo
.chptr
= chptr
;
703 call_hook(h_burst_channel
, &hchaninfo
);
706 hclientinfo
.target
= NULL
;
707 call_hook(h_burst_finished
, &hclientinfo
);
711 * show_capabilities - show current server capabilities
713 * inputs - pointer to an struct Client
714 * output - pointer to static string
715 * side effects - build up string representing capabilities of server listed
718 show_capabilities(struct Client
*target_p
)
720 static char msgbuf
[BUFSIZE
];
725 rb_strlcpy(msgbuf
, " TS6", sizeof(msgbuf
));
728 rb_strlcat(msgbuf
, " SSL", sizeof(msgbuf
));
730 if(!IsServer(target_p
) || !target_p
->serv
->caps
) /* short circuit if no caps */
733 rb_strlcat(msgbuf
, " ", sizeof(msgbuf
));
734 rb_strlcat(msgbuf
, capability_index_list(serv_capindex
, target_p
->serv
->caps
), sizeof(msgbuf
));
742 * inputs - pointer to a struct Client
747 server_estab(struct Client
*client_p
)
749 struct Client
*target_p
;
750 struct server_conf
*server_p
;
751 hook_data_client hdata
;
754 char note
[HOSTLEN
+ 15];
756 s_assert(NULL
!= client_p
);
760 host
= client_p
->name
;
762 if((server_p
= client_p
->localClient
->att_sconf
) == NULL
)
764 /* This shouldn't happen, better tell the ops... -A1kmm */
765 sendto_realops_snomask(SNO_GENERAL
, is_remote_connect(client_p
) ? L_NETWIDE
: L_ALL
,
766 "Warning: Lost connect{} block for server %s!", host
);
767 return exit_client(client_p
, client_p
, client_p
, "Lost connect{} block!");
770 /* We shouldn't have to check this, it should already done before
771 * server_estab is called. -A1kmm
773 if(client_p
->localClient
->passwd
)
775 memset(client_p
->localClient
->passwd
, 0, strlen(client_p
->localClient
->passwd
));
776 rb_free(client_p
->localClient
->passwd
);
777 client_p
->localClient
->passwd
= NULL
;
780 /* Its got identd , since its a server */
783 /* If there is something in the serv_list, it might be this
784 * connecting server..
786 if(!ServerInfo
.hub
&& serv_list
.head
)
788 if(client_p
!= serv_list
.head
->data
|| serv_list
.head
->next
)
790 ServerStats
.is_ref
++;
791 sendto_one(client_p
, "ERROR :I'm a leaf not a hub");
792 return exit_client(client_p
, client_p
, client_p
, "I'm a leaf");
796 if(IsUnknown(client_p
))
798 /* the server may be linking based on certificate fingerprint now. --nenolod */
799 sendto_one(client_p
, "PASS %s TS %d :%s",
800 EmptyString(server_p
->spasswd
) ? "*" : server_p
->spasswd
, TS_CURRENT
, me
.id
);
802 /* pass info to new server */
803 send_capabilities(client_p
, default_server_capabs
804 | (ServerConfCompressed(server_p
) ? CAP_ZIP_SUPPORTED
: 0)
805 | (ServerConfTb(server_p
) ? CAP_TB
: 0));
807 sendto_one(client_p
, "SERVER %s 1 :%s%s",
809 ConfigServerHide
.hidden
? "(H) " : "",
810 (me
.info
[0]) ? (me
.info
) : "IRCers United");
813 if(!rb_set_buffers(client_p
->localClient
->F
, READBUF_SIZE
))
814 ilog_error("rb_set_buffers failed for server");
816 /* Enable compression now */
817 if(IsCapable(client_p
, CAP_ZIP
))
819 start_zlib_session(client_p
);
821 sendto_one(client_p
, "SVINFO %d %d 0 :%ld", TS_CURRENT
, TS_MIN
, (long int)rb_current_time());
823 client_p
->servptr
= &me
;
825 if(IsAnyDead(client_p
))
826 return CLIENT_EXITED
;
830 rb_dlinkAdd(client_p
, &client_p
->lnode
, &me
.serv
->servers
);
831 rb_dlinkMoveNode(&client_p
->localClient
->tnode
, &unknown_list
, &serv_list
);
832 rb_dlinkAddTailAlloc(client_p
, &global_serv_list
);
835 add_to_id_hash(client_p
->id
, client_p
);
837 add_to_client_hash(client_p
->name
, client_p
);
838 /* doesnt duplicate client_p->serv if allocated this struct already */
839 make_server(client_p
);
841 client_p
->serv
->caps
= client_p
->localClient
->caps
;
843 if(client_p
->localClient
->fullcaps
)
845 client_p
->serv
->fullcaps
= rb_strdup(client_p
->localClient
->fullcaps
);
846 rb_free(client_p
->localClient
->fullcaps
);
847 client_p
->localClient
->fullcaps
= NULL
;
850 client_p
->serv
->nameinfo
= scache_connect(client_p
->name
, client_p
->info
, IsHidden(client_p
));
851 client_p
->localClient
->firsttime
= rb_current_time();
852 /* fixing eob timings.. -gnp */
854 if((rb_dlink_list_length(&lclient_list
) + rb_dlink_list_length(&serv_list
)) >
855 (unsigned long)MaxConnectionCount
)
856 MaxConnectionCount
= rb_dlink_list_length(&lclient_list
) +
857 rb_dlink_list_length(&serv_list
);
859 /* Show the real host/IP to admins */
860 sendto_realops_snomask(SNO_GENERAL
, L_ALL
,
861 "Link with %s established: (%s) link",
863 show_capabilities(client_p
));
865 ilog(L_SERVER
, "Link with %s established: (%s) link",
866 log_client_name(client_p
, SHOW_IP
), show_capabilities(client_p
));
869 hdata
.target
= client_p
;
870 call_hook(h_server_introduced
, &hdata
);
872 rb_snprintf(note
, sizeof(note
), "Server: %s", client_p
->name
);
873 rb_note(client_p
->localClient
->F
, note
);
876 ** Old sendto_serv_but_one() call removed because we now
877 ** need to send different names to different servers
878 ** (domain name matching) Send new server to other servers.
880 RB_DLINK_FOREACH(ptr
, serv_list
.head
)
882 target_p
= ptr
->data
;
884 if(target_p
== client_p
)
887 if(has_id(target_p
) && has_id(client_p
))
889 sendto_one(target_p
, ":%s SID %s 2 %s :%s%s",
890 me
.id
, client_p
->name
, client_p
->id
,
891 IsHidden(client_p
) ? "(H) " : "", client_p
->info
);
893 if(!EmptyString(client_p
->serv
->fullcaps
))
894 sendto_one(target_p
, ":%s ENCAP * GCAP :%s",
895 client_p
->id
, client_p
->serv
->fullcaps
);
899 sendto_one(target_p
, ":%s SERVER %s 2 :%s%s",
900 me
.name
, client_p
->name
,
901 IsHidden(client_p
) ? "(H) " : "", client_p
->info
);
903 if(!EmptyString(client_p
->serv
->fullcaps
))
904 sendto_one(target_p
, ":%s ENCAP * GCAP :%s",
905 client_p
->name
, client_p
->serv
->fullcaps
);
910 ** Pass on my client information to the new server
912 ** First, pass only servers (idea is that if the link gets
913 ** cancelled beacause the server was already there,
914 ** there are no NICK's to be cancelled...). Of course,
915 ** if cancellation occurs, all this info is sent anyway,
916 ** and I guess the link dies when a read is attempted...? --msa
918 ** Note: Link cancellation to occur at this point means
919 ** that at least two servers from my fragment are building
920 ** up connection this other fragment at the same time, it's
921 ** a race condition, not the normal way of operation...
923 ** ALSO NOTE: using the get_client_name for server names--
924 ** see previous *WARNING*!!! (Also, original inpath
927 RB_DLINK_FOREACH(ptr
, global_serv_list
.head
)
929 target_p
= ptr
->data
;
931 /* target_p->from == target_p for target_p == client_p */
932 if(IsMe(target_p
) || target_p
->from
== client_p
)
935 /* presumption, if target has an id, so does its uplink */
936 if(has_id(client_p
) && has_id(target_p
))
937 sendto_one(client_p
, ":%s SID %s %d %s :%s%s",
938 target_p
->servptr
->id
, target_p
->name
,
939 target_p
->hopcount
+ 1, target_p
->id
,
940 IsHidden(target_p
) ? "(H) " : "", target_p
->info
);
942 sendto_one(client_p
, ":%s SERVER %s %d :%s%s",
943 target_p
->servptr
->name
,
944 target_p
->name
, target_p
->hopcount
+ 1,
945 IsHidden(target_p
) ? "(H) " : "", target_p
->info
);
947 if(!EmptyString(target_p
->serv
->fullcaps
))
948 sendto_one(client_p
, ":%s ENCAP * GCAP :%s",
949 get_id(target_p
, client_p
),
950 target_p
->serv
->fullcaps
);
953 if(IsCapable(client_p
, CAP_BAN
))
958 /* Always send a PING after connect burst is done */
959 sendto_one(client_p
, "PING :%s", get_id(&me
, client_p
));
961 free_pre_client(client_p
);
963 send_pop_queue(client_p
);
969 * New server connection code
970 * Based upon the stuff floating about in s_bsd.c
975 serv_connect_resolved(struct Client
*client_p
)
977 struct rb_sockaddr_storage myipnum
;
978 char vhoststr
[HOSTIPLEN
];
979 struct server_conf
*server_p
;
982 if((server_p
= client_p
->localClient
->att_sconf
) == NULL
)
984 sendto_realops_snomask(SNO_GENERAL
, is_remote_connect(client_p
) ? L_NETWIDE
: L_ALL
, "Lost connect{} block for %s",
986 exit_client(client_p
, client_p
, &me
, "Lost connect{} block");
991 if(client_p
->localClient
->ip
.ss_family
== AF_INET6
)
992 port
= ntohs(((struct sockaddr_in6
*)&client_p
->localClient
->ip
)->sin6_port
);
995 port
= ntohs(((struct sockaddr_in
*)&client_p
->localClient
->ip
)->sin_port
);
997 if(ServerConfVhosted(server_p
))
999 memcpy(&myipnum
, &server_p
->my_ipnum
, sizeof(server_p
->my_ipnum
));
1000 ((struct sockaddr_in
*)&myipnum
)->sin_port
= 0;
1001 myipnum
.ss_family
= server_p
->aftype
;
1004 else if(server_p
->aftype
== AF_INET
&& ServerInfo
.specific_ipv4_vhost
)
1006 memcpy(&myipnum
, &ServerInfo
.ip
, sizeof(ServerInfo
.ip
));
1007 ((struct sockaddr_in
*)&myipnum
)->sin_port
= 0;
1008 myipnum
.ss_family
= AF_INET
;
1009 SET_SS_LEN(&myipnum
, sizeof(struct sockaddr_in
));
1013 else if((server_p
->aftype
== AF_INET6
) && ServerInfo
.specific_ipv6_vhost
)
1015 memcpy(&myipnum
, &ServerInfo
.ip6
, sizeof(ServerInfo
.ip6
));
1016 ((struct sockaddr_in6
*)&myipnum
)->sin6_port
= 0;
1017 myipnum
.ss_family
= AF_INET6
;
1018 SET_SS_LEN(&myipnum
, sizeof(struct sockaddr_in6
));
1024 ilog(L_SERVER
, "Connecting to %s[%s] port %d (%s)", client_p
->name
, client_p
->sockhost
, port
,
1026 server_p
->aftype
== AF_INET6
? "IPv6" :
1028 (server_p
->aftype
== AF_INET
? "IPv4" : "?"));
1030 if(ServerConfSSL(server_p
))
1032 rb_connect_tcp(client_p
->localClient
->F
, (struct sockaddr
*)&client_p
->localClient
->ip
,
1033 NULL
, 0, serv_connect_ssl_callback
,
1034 client_p
, ConfigFileEntry
.connect_timeout
);
1037 rb_connect_tcp(client_p
->localClient
->F
, (struct sockaddr
*)&client_p
->localClient
->ip
,
1038 NULL
, 0, serv_connect_callback
,
1039 client_p
, ConfigFileEntry
.connect_timeout
);
1044 rb_inet_ntop_sock((struct sockaddr
*)&myipnum
, vhoststr
, sizeof vhoststr
);
1045 ilog(L_SERVER
, "Connecting to %s[%s] port %d (%s) (vhost %s)", client_p
->name
, client_p
->sockhost
, port
,
1047 server_p
->aftype
== AF_INET6
? "IPv6" :
1049 (server_p
->aftype
== AF_INET
? "IPv4" : "?"), vhoststr
);
1052 if(ServerConfSSL(server_p
))
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_ssl_callback
, client_p
,
1056 ConfigFileEntry
.connect_timeout
);
1058 rb_connect_tcp(client_p
->localClient
->F
, (struct sockaddr
*)&client_p
->localClient
->ip
,
1059 (struct sockaddr
*) &myipnum
,
1060 GET_SS_LEN(&myipnum
), serv_connect_callback
, client_p
,
1061 ConfigFileEntry
.connect_timeout
);
1067 serv_connect_dns_callback(void *vptr
, struct DNSReply
*reply
)
1069 struct Client
*client_p
= vptr
;
1072 rb_free(client_p
->localClient
->dnsquery
);
1073 client_p
->localClient
->dnsquery
= NULL
;
1077 sendto_realops_snomask(SNO_GENERAL
, is_remote_connect(client_p
) ? L_NETWIDE
: L_ALL
, "Cannot resolve hostname for %s",
1079 ilog(L_SERVER
, "Cannot resolve hostname for %s",
1080 log_client_name(client_p
, HIDE_IP
));
1081 exit_client(client_p
, client_p
, &me
, "Cannot resolve hostname");
1085 if(reply
->addr
.ss_family
== AF_INET6
)
1086 port
= ((struct sockaddr_in6
*)&client_p
->localClient
->ip
)->sin6_port
;
1089 port
= ((struct sockaddr_in
*)&client_p
->localClient
->ip
)->sin_port
;
1090 memcpy(&client_p
->localClient
->ip
, &reply
->addr
, sizeof(client_p
->localClient
->ip
));
1092 if(reply
->addr
.ss_family
== AF_INET6
)
1093 ((struct sockaddr_in6
*)&client_p
->localClient
->ip
)->sin6_port
= port
;
1096 ((struct sockaddr_in
*)&client_p
->localClient
->ip
)->sin_port
= port
;
1097 /* Set sockhost properly now -- jilles */
1098 rb_inet_ntop_sock((struct sockaddr
*)&client_p
->localClient
->ip
,
1099 client_p
->sockhost
, sizeof client_p
->sockhost
);
1100 serv_connect_resolved(client_p
);
1104 * serv_connect() - initiate a server connection
1106 * inputs - pointer to conf
1107 * - pointer to client doing the connet
1111 * This code initiates a connection to a server. It first checks to make
1112 * sure the given server exists. If this is the case, it creates a socket,
1113 * creates a client, saves the socket information in the client, and
1114 * initiates a connection to the server through rb_connect_tcp(). The
1115 * completion of this goes through serv_completed_connection().
1117 * We return 1 if the connection is attempted, since we don't know whether
1118 * it suceeded or not, and 0 if it fails in here somewhere.
1121 serv_connect(struct server_conf
*server_p
, struct Client
*by
)
1123 struct Client
*client_p
;
1124 struct rb_sockaddr_storage theiripnum
;
1126 char note
[HOSTLEN
+ 10];
1128 s_assert(server_p
!= NULL
);
1129 if(server_p
== NULL
)
1133 * Make sure this server isn't already connected
1135 if((client_p
= find_server(NULL
, server_p
->name
)))
1137 sendto_realops_snomask(SNO_GENERAL
, L_ALL
,
1138 "Server %s already present from %s",
1139 server_p
->name
, client_p
->name
);
1140 if(by
&& IsPerson(by
) && !MyClient(by
))
1141 sendto_one_notice(by
, ":Server %s already present from %s",
1142 server_p
->name
, client_p
->name
);
1146 /* create a socket for the server connection */
1147 if((F
= rb_socket(server_p
->aftype
, SOCK_STREAM
, 0, NULL
)) == NULL
)
1149 ilog_error("opening a stream socket");
1153 rb_snprintf(note
, sizeof note
, "Server: %s", server_p
->name
);
1156 /* Create a local client */
1157 client_p
= make_client(NULL
);
1159 /* Copy in the server, hostname, fd
1160 * The sockhost may be a hostname, this will be corrected later
1163 rb_strlcpy(client_p
->name
, server_p
->name
, sizeof(client_p
->name
));
1164 rb_strlcpy(client_p
->host
, server_p
->host
, sizeof(client_p
->host
));
1165 rb_strlcpy(client_p
->sockhost
, server_p
->host
, sizeof(client_p
->sockhost
));
1166 client_p
->localClient
->F
= F
;
1167 add_to_cli_fd_hash(client_p
);
1170 * Set up the initial server evilness, ripped straight from
1171 * connect_server(), so don't blame me for it being evil.
1175 if(!rb_set_buffers(client_p
->localClient
->F
, READBUF_SIZE
))
1177 ilog_error("setting the buffer size for a server connection");
1181 * Attach config entries to client here rather than in
1182 * serv_connect_callback(). This to avoid null pointer references.
1184 attach_server_conf(client_p
, server_p
);
1187 * at this point we have a connection in progress and C/N lines
1188 * attached to the client, the socket info should be saved in the
1189 * client and it should either be resolved or have a valid address.
1191 * The socket has been connected or connect is in progress.
1193 make_server(client_p
);
1194 if(by
&& IsPerson(by
))
1196 rb_strlcpy(client_p
->serv
->by
, by
->name
,
1197 sizeof client_p
->serv
->by
);
1198 if(client_p
->serv
->user
)
1199 free_user(client_p
->serv
->user
, NULL
);
1200 client_p
->serv
->user
= by
->user
;
1205 rb_strlcpy(client_p
->serv
->by
, "AutoConn.",
1206 sizeof client_p
->serv
->by
);
1207 if(client_p
->serv
->user
)
1208 free_user(client_p
->serv
->user
, NULL
);
1209 client_p
->serv
->user
= NULL
;
1211 SetConnecting(client_p
);
1212 rb_dlinkAddTail(client_p
, &client_p
->node
, &global_client_list
);
1214 if (rb_inet_pton_sock(server_p
->host
, (struct sockaddr
*)&theiripnum
) > 0)
1216 memcpy(&client_p
->localClient
->ip
, &theiripnum
, sizeof(client_p
->localClient
->ip
));
1218 if(theiripnum
.ss_family
== AF_INET6
)
1219 ((struct sockaddr_in6
*)&client_p
->localClient
->ip
)->sin6_port
= htons(server_p
->port
);
1222 ((struct sockaddr_in
*)&client_p
->localClient
->ip
)->sin_port
= htons(server_p
->port
);
1224 return serv_connect_resolved(client_p
);
1229 if(theiripnum
.ss_family
== AF_INET6
)
1230 ((struct sockaddr_in6
*)&client_p
->localClient
->ip
)->sin6_port
= htons(server_p
->port
);
1233 ((struct sockaddr_in
*)&client_p
->localClient
->ip
)->sin_port
= htons(server_p
->port
);
1235 client_p
->localClient
->dnsquery
= rb_malloc(sizeof(struct DNSQuery
));
1236 client_p
->localClient
->dnsquery
->ptr
= client_p
;
1237 client_p
->localClient
->dnsquery
->callback
= serv_connect_dns_callback
;
1238 gethost_byname_type(server_p
->host
, client_p
->localClient
->dnsquery
,
1240 server_p
->aftype
== AF_INET6
? T_AAAA
:
1248 serv_connect_ssl_callback(rb_fde_t
*F
, int status
, void *data
)
1250 struct Client
*client_p
= data
;
1252 rb_connect_sockaddr(F
, (struct sockaddr
*)&client_p
->localClient
->ip
, sizeof(client_p
->localClient
->ip
));
1255 /* Print error message, just like non-SSL. */
1256 serv_connect_callback(F
, status
, data
);
1259 if(rb_socketpair(AF_UNIX
, SOCK_STREAM
, 0, &xF
[0], &xF
[1], "Outgoing ssld connection") == -1)
1261 ilog_error("rb_socketpair failed for server");
1262 serv_connect_callback(F
, RB_ERROR
, data
);
1266 del_from_cli_fd_hash(client_p
);
1267 client_p
->localClient
->F
= xF
[0];
1268 add_to_cli_fd_hash(client_p
);
1270 client_p
->localClient
->ssl_ctl
= start_ssld_connect(F
, xF
[1], rb_get_fd(xF
[0]));
1272 serv_connect_callback(client_p
->localClient
->F
, RB_OK
, client_p
);
1276 * serv_connect_callback() - complete a server connection.
1278 * This routine is called after the server connection attempt has
1279 * completed. If unsucessful, an error is sent to ops and the client
1280 * is closed. If sucessful, it goes through the initialisation/check
1281 * procedures, the capabilities are sent, and the socket is then
1282 * marked for reading.
1285 serv_connect_callback(rb_fde_t
*F
, int status
, void *data
)
1287 struct Client
*client_p
= data
;
1288 struct server_conf
*server_p
;
1291 /* First, make sure its a real client! */
1292 s_assert(client_p
!= NULL
);
1293 s_assert(client_p
->localClient
->F
== F
);
1295 if(client_p
== NULL
)
1298 /* while we were waiting for the callback, its possible this already
1301 if(find_server(NULL
, client_p
->name
) != NULL
)
1303 exit_client(client_p
, client_p
, &me
, "Server Exists");
1307 if(client_p
->localClient
->ssl_ctl
== NULL
)
1308 rb_connect_sockaddr(F
, (struct sockaddr
*)&client_p
->localClient
->ip
, sizeof(client_p
->localClient
->ip
));
1310 /* Check the status */
1313 /* COMM_ERR_TIMEOUT wont have an errno associated with it,
1314 * the others will.. --fl
1316 if(status
== RB_ERR_TIMEOUT
)
1318 sendto_realops_snomask(SNO_GENERAL
, is_remote_connect(client_p
) ? L_NETWIDE
: L_ALL
,
1319 "Error connecting to %s[%s]: %s",
1323 ilog(L_SERVER
, "Error connecting to %s[%s]: %s",
1324 client_p
->name
, client_p
->sockhost
,
1329 errstr
= strerror(rb_get_sockerr(F
));
1330 sendto_realops_snomask(SNO_GENERAL
, is_remote_connect(client_p
) ? L_NETWIDE
: L_ALL
,
1331 "Error connecting to %s[%s]: %s (%s)",
1334 rb_errstr(status
), errstr
);
1335 ilog(L_SERVER
, "Error connecting to %s[%s]: %s (%s)",
1336 client_p
->name
, client_p
->sockhost
,
1337 rb_errstr(status
), errstr
);
1340 exit_client(client_p
, client_p
, &me
, rb_errstr(status
));
1344 /* COMM_OK, so continue the connection procedure */
1345 /* Get the C/N lines */
1346 if((server_p
= client_p
->localClient
->att_sconf
) == NULL
)
1348 sendto_realops_snomask(SNO_GENERAL
, is_remote_connect(client_p
) ? L_NETWIDE
: L_ALL
, "Lost connect{} block for %s",
1350 exit_client(client_p
, client_p
, &me
, "Lost connect{} block");
1354 /* Next, send the initial handshake */
1355 SetHandshake(client_p
);
1357 /* the server may be linking based on certificate fingerprint now. --nenolod */
1358 sendto_one(client_p
, "PASS %s TS %d :%s",
1359 EmptyString(server_p
->spasswd
) ? "*" : server_p
->spasswd
, TS_CURRENT
, me
.id
);
1361 /* pass my info to the new server */
1362 send_capabilities(client_p
, default_server_capabs
1363 | (ServerConfCompressed(server_p
) ? CAP_ZIP_SUPPORTED
: 0)
1364 | (ServerConfTb(server_p
) ? CAP_TB
: 0));
1366 sendto_one(client_p
, "SERVER %s 1 :%s%s",
1368 ConfigServerHide
.hidden
? "(H) " : "", me
.info
);
1371 * If we've been marked dead because a send failed, just exit
1372 * here now and save everyone the trouble of us ever existing.
1374 if(IsAnyDead(client_p
))
1376 sendto_realops_snomask(SNO_GENERAL
, is_remote_connect(client_p
) ? L_NETWIDE
: L_ALL
,
1377 "%s went dead during handshake", client_p
->name
);
1378 exit_client(client_p
, client_p
, &me
, "Went dead during handshake");
1382 /* don't move to serv_list yet -- we haven't sent a burst! */
1384 /* If we get here, we're ok, so lets start reading some data */
1385 read_packet(F
, client_p
);