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 CAP_QS
= capability_put(serv_capindex
, "QS");
106 CAP_EX
= capability_put(serv_capindex
, "EX");
107 CAP_CHW
= capability_put(serv_capindex
, "CHW");
108 CAP_IE
= capability_put(serv_capindex
, "IE");
109 CAP_KLN
= capability_put(serv_capindex
, "KLN");
110 CAP_KNOCK
= capability_put(serv_capindex
, "KNOCK");
111 CAP_ZIP
= capability_put(serv_capindex
, "ZIP");
112 CAP_TB
= capability_put(serv_capindex
, "TB");
113 CAP_UNKLN
= capability_put(serv_capindex
, "UNKLN");
114 CAP_CLUSTER
= capability_put(serv_capindex
, "CLUSTER");
115 CAP_ENCAP
= capability_put(serv_capindex
, "ENCAP");
116 CAP_SERVICE
= capability_put(serv_capindex
, "SERVICES");
117 CAP_RSFNC
= capability_put(serv_capindex
, "RSFNC");
118 CAP_SAVE
= capability_put(serv_capindex
, "SAVE");
119 CAP_EUID
= capability_put(serv_capindex
, "EUID");
120 CAP_EOPMOD
= capability_put(serv_capindex
, "EOPMOD");
121 CAP_BAN
= capability_put(serv_capindex
, "BAN");
122 CAP_MLOCK
= capability_put(serv_capindex
, "MLOCK");
125 static CNCB serv_connect_callback
;
126 static CNCB serv_connect_ssl_callback
;
129 * hunt_server - Do the basic thing in delivering the message (command)
130 * across the relays to the specific server (server) for
133 * Note: The command is a format string and *MUST* be
134 * of prefixed style (e.g. ":%s COMMAND %s ...").
135 * Command can have only max 8 parameters.
137 * server parv[server] is the parameter identifying the
141 * parv[server] is replaced with the pointer to the
142 * real servername from the matched client (I'm lazy
145 * returns: (see #defines)
148 hunt_server(struct Client
*client_p
, struct Client
*source_p
,
149 const char *command
, int server
, int parc
, const char *parv
[])
151 struct Client
*target_p
;
158 * Assume it's me, if no server
160 if(parc
<= server
|| EmptyString(parv
[server
]) ||
161 match(parv
[server
], me
.name
) || (strcmp(parv
[server
], me
.id
) == 0))
162 return (HUNTED_ISME
);
164 new = LOCAL_COPY(parv
[server
]);
167 * These are to pickup matches that would cause the following
168 * message to go in the wrong direction while doing quick fast
169 * non-matching lookups.
171 if(MyClient(source_p
))
172 target_p
= find_named_client(new);
174 target_p
= find_client(new);
177 if(target_p
->from
== source_p
->from
&& !MyConnect(target_p
))
181 wilds
= (strchr(new, '?') || strchr(new, '*'));
184 * Again, if there are no wild cards involved in the server
185 * name, use the hash lookup
187 if(!target_p
&& wilds
)
189 RB_DLINK_FOREACH(ptr
, global_serv_list
.head
)
191 if(match(new, ((struct Client
*) (ptr
->data
))->name
))
193 target_p
= ptr
->data
;
199 if(target_p
&& !IsRegistered(target_p
))
204 if(IsMe(target_p
) || MyClient(target_p
))
208 parv
[server
] = get_id(target_p
, target_p
);
210 sendto_one(target_p
, command
, get_id(source_p
, target_p
),
211 parv
[1], parv
[2], parv
[3], parv
[4], parv
[5], parv
[6], parv
[7], parv
[8]);
213 return (HUNTED_PASS
);
216 if(MyClient(source_p
) || !IsDigit(parv
[server
][0]))
217 sendto_one_numeric(source_p
, ERR_NOSUCHSERVER
,
218 form_str(ERR_NOSUCHSERVER
), parv
[server
]);
219 return (HUNTED_NOSUCH
);
223 * try_connections - scan through configuration and try new connections.
224 * Returns the calendar time when the next call to this
225 * function should be made latest. (No harm done if this
226 * is called earlier or later...)
229 try_connections(void *unused
)
231 struct Client
*client_p
;
232 struct server_conf
*server_p
= NULL
;
233 struct server_conf
*tmp_p
;
236 int connecting
= FALSE
;
240 RB_DLINK_FOREACH(ptr
, server_conf_list
.head
)
244 if(ServerConfIllegal(tmp_p
) || !ServerConfAutoconn(tmp_p
))
247 /* don't allow ssl connections if ssl isn't setup */
248 if(ServerConfSSL(tmp_p
) && (!ssl_ok
|| !get_ssld_count()))
251 cltmp
= tmp_p
->class;
254 * Skip this entry if the use of it is still on hold until
255 * future. Otherwise handle this entry (and set it on hold
256 * until next time). Will reset only hold times, if already
257 * made one successfull connection... [this algorithm is
258 * a bit fuzzy... -- msa >;) ]
260 if(tmp_p
->hold
> rb_current_time())
262 if(next
> tmp_p
->hold
|| next
== 0)
267 confrq
= get_con_freq(cltmp
);
268 tmp_p
->hold
= rb_current_time() + confrq
;
271 * Found a CONNECT config with port specified, scan clients
272 * and see if this server is already connected?
274 client_p
= find_server(NULL
, tmp_p
->name
);
276 if(!client_p
&& (CurrUsers(cltmp
) < MaxUsers(cltmp
)) && !connecting
)
280 /* We connect only one at time... */
284 if((next
> tmp_p
->hold
) || (next
== 0))
288 /* TODO: change this to set active flag to 0 when added to event! --Habeeb */
289 if(GlobalSetOptions
.autoconn
== 0)
295 /* move this connect entry to end.. */
296 rb_dlinkDelete(&server_p
->node
, &server_conf_list
);
297 rb_dlinkAddTail(server_p
, &server_p
->node
, &server_conf_list
);
300 * We used to only print this if serv_connect() actually
301 * suceeded, but since rb_tcp_connect() can call the callback
302 * immediately if there is an error, we were getting error messages
303 * in the wrong order. SO, we just print out the activated line,
304 * and let serv_connect() / serv_connect_callback() print an
305 * error afterwards if it fails.
308 sendto_realops_snomask(SNO_GENERAL
, L_ALL
,
309 "Connection to %s activated",
312 serv_connect(server_p
, 0);
316 check_server(const char *name
, struct Client
*client_p
)
318 struct server_conf
*server_p
= NULL
;
319 struct server_conf
*tmp_p
;
323 s_assert(NULL
!= client_p
);
327 if(!(client_p
->localClient
->passwd
))
330 if(strlen(name
) > HOSTLEN
)
333 RB_DLINK_FOREACH(ptr
, server_conf_list
.head
)
337 if(ServerConfIllegal(tmp_p
))
340 if(!match(tmp_p
->name
, name
))
345 /* XXX: Fix me for IPv6 */
346 /* XXX sockhost is the IPv4 ip as a string */
347 if(match(tmp_p
->host
, client_p
->host
) ||
348 match(tmp_p
->host
, client_p
->sockhost
))
354 if(ServerConfEncrypted(tmp_p
))
356 if(!strcmp(tmp_p
->passwd
, rb_crypt(client_p
->localClient
->passwd
,
365 else if(strcmp(tmp_p
->passwd
, client_p
->localClient
->passwd
))
371 if(!client_p
->certfp
|| strcasecmp(tmp_p
->certfp
, client_p
->certfp
) != 0)
383 if(ServerConfSSL(server_p
) && client_p
->localClient
->ssl_ctl
== NULL
)
388 attach_server_conf(client_p
, server_p
);
390 /* clear ZIP/TB if they support but we dont want them */
392 if(!ServerConfCompressed(server_p
))
394 ClearCap(client_p
, CAP_ZIP
);
396 if(!ServerConfTb(server_p
))
397 ClearCap(client_p
, CAP_TB
);
405 * inputs - Client pointer to send to
406 * - int flag of capabilities that this server has
408 * side effects - send the CAPAB line to a server -orabidoo
412 send_capabilities(struct Client
*client_p
, unsigned int cap_can_send
)
414 sendto_one(client_p
, "CAPAB :%s", capability_index_list(serv_capindex
, cap_can_send
));
418 burst_ban(struct Client
*client_p
)
421 struct ConfItem
*aconf
;
422 const char *type
, *oper
;
423 /* +5 for !,@,{,} and null */
424 char operbuf
[NICKLEN
+ USERLEN
+ HOSTLEN
+ HOSTLEN
+ 5];
428 melen
= strlen(me
.name
);
429 RB_DLINK_FOREACH(ptr
, prop_bans
.head
)
433 /* Skip expired stuff. */
434 if(aconf
->lifetime
< rb_current_time())
436 switch(aconf
->status
& ~CONF_ILLEGAL
)
438 case CONF_KILL
: type
= "K"; break;
439 case CONF_DLINE
: type
= "D"; break;
440 case CONF_XLINE
: type
= "X"; break;
441 case CONF_RESV_NICK
: type
= "R"; break;
442 case CONF_RESV_CHANNEL
: type
= "R"; break;
446 oper
= aconf
->info
.oper
;
447 if(aconf
->flags
& CONF_FLAGS_MYOPER
)
449 /* Our operator{} names may not be meaningful
450 * to other servers, so rewrite to our server
453 rb_strlcpy(operbuf
, aconf
->info
.oper
, sizeof buf
);
454 p
= strrchr(operbuf
, '{');
456 operbuf
+ sizeof operbuf
- p
> (ptrdiff_t)(melen
+ 2))
458 memcpy(p
+ 1, me
.name
, melen
);
464 sendto_one(client_p
, ":%s BAN %s %s %s %lu %d %d %s :%s%s%s",
467 aconf
->user
? aconf
->user
: "*", aconf
->host
,
468 (unsigned long)aconf
->created
,
469 (int)(aconf
->hold
- aconf
->created
),
470 (int)(aconf
->lifetime
- aconf
->created
),
473 aconf
->spasswd
? "|" : "",
474 aconf
->spasswd
? aconf
->spasswd
: "");
480 * input - client to burst to, channel name, list to burst, mode flag
482 * side effects - client is sent a list of +b, +e, or +I modes
485 burst_modes_TS6(struct Client
*client_p
, struct Channel
*chptr
,
486 rb_dlink_list
*list
, char flag
)
495 cur_len
= mlen
= rb_sprintf(buf
, ":%s BMASK %ld %s %c :",
496 me
.id
, (long) chptr
->channelts
, chptr
->chname
, flag
);
499 RB_DLINK_FOREACH(ptr
, list
->head
)
503 tlen
= strlen(banptr
->banstr
) + (banptr
->forward
? strlen(banptr
->forward
) + 1 : 0) + 1;
506 if(cur_len
+ tlen
> BUFSIZE
- 3)
508 /* the one we're trying to send doesnt fit at all! */
515 /* chop off trailing space and send.. */
517 sendto_one(client_p
, "%s", buf
);
523 rb_sprintf(t
, "%s$%s ", banptr
->banstr
, banptr
->forward
);
525 rb_sprintf(t
, "%s ", banptr
->banstr
);
530 /* cant ever exit the loop above without having modified buf,
531 * chop off trailing space and send.
534 sendto_one(client_p
, "%s", buf
);
540 * inputs - client (server) to send nick towards
541 * - client to send nick for
543 * side effects - NICK message is sent towards given client_p
546 burst_TS6(struct Client
*client_p
)
548 static char ubuf
[12];
549 struct Client
*target_p
;
550 struct Channel
*chptr
;
551 struct membership
*msptr
;
552 hook_data_client hclientinfo
;
553 hook_data_channel hchaninfo
;
560 hclientinfo
.client
= hchaninfo
.client
= client_p
;
562 RB_DLINK_FOREACH(ptr
, global_client_list
.head
)
564 target_p
= ptr
->data
;
566 if(!IsPerson(target_p
))
569 send_umode(NULL
, target_p
, 0, 0, ubuf
);
576 if(IsCapable(client_p
, CAP_EUID
))
577 sendto_one(client_p
, ":%s EUID %s %d %ld %s %s %s %s %s %s %s :%s",
578 target_p
->servptr
->id
, target_p
->name
,
579 target_p
->hopcount
+ 1,
580 (long) target_p
->tsinfo
, ubuf
,
581 target_p
->username
, target_p
->host
,
582 IsIPSpoof(target_p
) ? "0" : target_p
->sockhost
,
584 IsDynSpoof(target_p
) ? target_p
->orighost
: "*",
585 EmptyString(target_p
->user
->suser
) ? "*" : target_p
->user
->suser
,
588 sendto_one(client_p
, ":%s UID %s %d %ld %s %s %s %s %s :%s",
589 target_p
->servptr
->id
, target_p
->name
,
590 target_p
->hopcount
+ 1,
591 (long) target_p
->tsinfo
, ubuf
,
592 target_p
->username
, target_p
->host
,
593 IsIPSpoof(target_p
) ? "0" : target_p
->sockhost
,
594 target_p
->id
, target_p
->info
);
596 if(!EmptyString(target_p
->certfp
))
597 sendto_one(client_p
, ":%s ENCAP * CERTFP :%s",
598 use_id(target_p
), target_p
->certfp
);
600 if(!IsCapable(client_p
, CAP_EUID
))
602 if(IsDynSpoof(target_p
))
603 sendto_one(client_p
, ":%s ENCAP * REALHOST %s",
604 use_id(target_p
), target_p
->orighost
);
605 if(!EmptyString(target_p
->user
->suser
))
606 sendto_one(client_p
, ":%s ENCAP * LOGIN %s",
607 use_id(target_p
), target_p
->user
->suser
);
610 if(ConfigFileEntry
.burst_away
&& !EmptyString(target_p
->user
->away
))
611 sendto_one(client_p
, ":%s AWAY :%s",
613 target_p
->user
->away
);
615 hclientinfo
.target
= target_p
;
616 call_hook(h_burst_client
, &hclientinfo
);
619 RB_DLINK_FOREACH(ptr
, global_channel_list
.head
)
623 if(*chptr
->chname
!= '#')
626 cur_len
= mlen
= rb_sprintf(buf
, ":%s SJOIN %ld %s %s :", me
.id
,
627 (long) chptr
->channelts
, chptr
->chname
,
628 channel_modes(chptr
, client_p
));
632 RB_DLINK_FOREACH(uptr
, chptr
->members
.head
)
636 tlen
= strlen(use_id(msptr
->client_p
)) + 1;
642 if(cur_len
+ tlen
>= BUFSIZE
- 3)
645 sendto_one(client_p
, "%s", buf
);
650 rb_sprintf(t
, "%s%s ", find_channel_status(msptr
, 1),
651 use_id(msptr
->client_p
));
657 if (rb_dlink_list_length(&chptr
->members
) > 0)
659 /* remove trailing space */
662 sendto_one(client_p
, "%s", buf
);
664 if(rb_dlink_list_length(&chptr
->banlist
) > 0)
665 burst_modes_TS6(client_p
, chptr
, &chptr
->banlist
, 'b');
667 if(IsCapable(client_p
, CAP_EX
) &&
668 rb_dlink_list_length(&chptr
->exceptlist
) > 0)
669 burst_modes_TS6(client_p
, chptr
, &chptr
->exceptlist
, 'e');
671 if(IsCapable(client_p
, CAP_IE
) &&
672 rb_dlink_list_length(&chptr
->invexlist
) > 0)
673 burst_modes_TS6(client_p
, chptr
, &chptr
->invexlist
, 'I');
675 if(rb_dlink_list_length(&chptr
->quietlist
) > 0)
676 burst_modes_TS6(client_p
, chptr
, &chptr
->quietlist
, 'q');
678 if(IsCapable(client_p
, CAP_TB
) && chptr
->topic
!= NULL
)
679 sendto_one(client_p
, ":%s TB %s %ld %s%s:%s",
680 me
.id
, chptr
->chname
, (long) chptr
->topic_time
,
681 ConfigChannel
.burst_topicwho
? chptr
->topic_info
: "",
682 ConfigChannel
.burst_topicwho
? " " : "",
685 if(IsCapable(client_p
, CAP_MLOCK
))
686 sendto_one(client_p
, ":%s MLOCK %ld %s :%s",
687 me
.id
, (long) chptr
->channelts
, chptr
->chname
,
688 EmptyString(chptr
->mode_lock
) ? "" : chptr
->mode_lock
);
690 hchaninfo
.chptr
= chptr
;
691 call_hook(h_burst_channel
, &hchaninfo
);
694 hclientinfo
.target
= NULL
;
695 call_hook(h_burst_finished
, &hclientinfo
);
699 * show_capabilities - show current server capabilities
701 * inputs - pointer to an struct Client
702 * output - pointer to static string
703 * side effects - build up string representing capabilities of server listed
706 show_capabilities(struct Client
*target_p
)
708 static char msgbuf
[BUFSIZE
];
713 rb_strlcpy(msgbuf
, " TS6", sizeof(msgbuf
));
716 rb_strlcat(msgbuf
, " SSL", sizeof(msgbuf
));
718 if(!IsServer(target_p
) || !target_p
->serv
->caps
) /* short circuit if no caps */
721 rb_strlcat(msgbuf
, capability_index_list(serv_capindex
, target_p
->serv
->caps
), sizeof(msgbuf
));
729 * inputs - pointer to a struct Client
734 server_estab(struct Client
*client_p
)
736 struct Client
*target_p
;
737 struct server_conf
*server_p
;
738 hook_data_client hdata
;
741 char note
[HOSTLEN
+ 15];
743 s_assert(NULL
!= client_p
);
747 host
= client_p
->name
;
749 if((server_p
= client_p
->localClient
->att_sconf
) == NULL
)
751 /* This shouldn't happen, better tell the ops... -A1kmm */
752 sendto_realops_snomask(SNO_GENERAL
, is_remote_connect(client_p
) ? L_NETWIDE
: L_ALL
,
753 "Warning: Lost connect{} block for server %s!", host
);
754 return exit_client(client_p
, client_p
, client_p
, "Lost connect{} block!");
757 /* We shouldn't have to check this, it should already done before
758 * server_estab is called. -A1kmm
760 if(client_p
->localClient
->passwd
)
762 memset(client_p
->localClient
->passwd
, 0, strlen(client_p
->localClient
->passwd
));
763 rb_free(client_p
->localClient
->passwd
);
764 client_p
->localClient
->passwd
= NULL
;
767 /* Its got identd , since its a server */
770 /* If there is something in the serv_list, it might be this
771 * connecting server..
773 if(!ServerInfo
.hub
&& serv_list
.head
)
775 if(client_p
!= serv_list
.head
->data
|| serv_list
.head
->next
)
777 ServerStats
.is_ref
++;
778 sendto_one(client_p
, "ERROR :I'm a leaf not a hub");
779 return exit_client(client_p
, client_p
, client_p
, "I'm a leaf");
783 if(IsUnknown(client_p
))
785 /* the server may be linking based on certificate fingerprint now. --nenolod */
786 sendto_one(client_p
, "PASS %s TS %d :%s",
787 EmptyString(server_p
->spasswd
) ? "*" : server_p
->spasswd
, TS_CURRENT
, me
.id
);
789 /* pass info to new server */
790 send_capabilities(client_p
, default_server_capabs
791 | (ServerConfCompressed(server_p
) ? CAP_ZIP_SUPPORTED
: 0)
792 | (ServerConfTb(server_p
) ? CAP_TB
: 0));
794 sendto_one(client_p
, "SERVER %s 1 :%s%s",
796 ConfigServerHide
.hidden
? "(H) " : "",
797 (me
.info
[0]) ? (me
.info
) : "IRCers United");
800 if(!rb_set_buffers(client_p
->localClient
->F
, READBUF_SIZE
))
801 ilog_error("rb_set_buffers failed for server");
803 /* Enable compression now */
804 if(IsCapable(client_p
, CAP_ZIP
))
806 start_zlib_session(client_p
);
808 sendto_one(client_p
, "SVINFO %d %d 0 :%ld", TS_CURRENT
, TS_MIN
, (long int)rb_current_time());
810 client_p
->servptr
= &me
;
812 if(IsAnyDead(client_p
))
813 return CLIENT_EXITED
;
817 rb_dlinkAdd(client_p
, &client_p
->lnode
, &me
.serv
->servers
);
818 rb_dlinkMoveNode(&client_p
->localClient
->tnode
, &unknown_list
, &serv_list
);
819 rb_dlinkAddTailAlloc(client_p
, &global_serv_list
);
822 add_to_id_hash(client_p
->id
, client_p
);
824 add_to_client_hash(client_p
->name
, client_p
);
825 /* doesnt duplicate client_p->serv if allocated this struct already */
826 make_server(client_p
);
828 client_p
->serv
->caps
= client_p
->localClient
->caps
;
830 if(client_p
->localClient
->fullcaps
)
832 client_p
->serv
->fullcaps
= rb_strdup(client_p
->localClient
->fullcaps
);
833 rb_free(client_p
->localClient
->fullcaps
);
834 client_p
->localClient
->fullcaps
= NULL
;
837 client_p
->serv
->nameinfo
= scache_connect(client_p
->name
, client_p
->info
, IsHidden(client_p
));
838 client_p
->localClient
->firsttime
= rb_current_time();
839 /* fixing eob timings.. -gnp */
841 if((rb_dlink_list_length(&lclient_list
) + rb_dlink_list_length(&serv_list
)) >
842 (unsigned long)MaxConnectionCount
)
843 MaxConnectionCount
= rb_dlink_list_length(&lclient_list
) +
844 rb_dlink_list_length(&serv_list
);
846 /* Show the real host/IP to admins */
847 sendto_realops_snomask(SNO_GENERAL
, L_ALL
,
848 "Link with %s established: (%s) link",
850 show_capabilities(client_p
));
852 ilog(L_SERVER
, "Link with %s established: (%s) link",
853 log_client_name(client_p
, SHOW_IP
), show_capabilities(client_p
));
856 hdata
.target
= client_p
;
857 call_hook(h_server_introduced
, &hdata
);
859 rb_snprintf(note
, sizeof(note
), "Server: %s", client_p
->name
);
860 rb_note(client_p
->localClient
->F
, note
);
863 ** Old sendto_serv_but_one() call removed because we now
864 ** need to send different names to different servers
865 ** (domain name matching) Send new server to other servers.
867 RB_DLINK_FOREACH(ptr
, serv_list
.head
)
869 target_p
= ptr
->data
;
871 if(target_p
== client_p
)
874 if(has_id(target_p
) && has_id(client_p
))
876 sendto_one(target_p
, ":%s SID %s 2 %s :%s%s",
877 me
.id
, client_p
->name
, client_p
->id
,
878 IsHidden(client_p
) ? "(H) " : "", client_p
->info
);
880 if(IsCapable(target_p
, CAP_ENCAP
) &&
881 !EmptyString(client_p
->serv
->fullcaps
))
882 sendto_one(target_p
, ":%s ENCAP * GCAP :%s",
883 client_p
->id
, client_p
->serv
->fullcaps
);
887 sendto_one(target_p
, ":%s SERVER %s 2 :%s%s",
888 me
.name
, client_p
->name
,
889 IsHidden(client_p
) ? "(H) " : "", client_p
->info
);
891 if(IsCapable(target_p
, CAP_ENCAP
) &&
892 !EmptyString(client_p
->serv
->fullcaps
))
893 sendto_one(target_p
, ":%s ENCAP * GCAP :%s",
894 client_p
->name
, client_p
->serv
->fullcaps
);
899 ** Pass on my client information to the new server
901 ** First, pass only servers (idea is that if the link gets
902 ** cancelled beacause the server was already there,
903 ** there are no NICK's to be cancelled...). Of course,
904 ** if cancellation occurs, all this info is sent anyway,
905 ** and I guess the link dies when a read is attempted...? --msa
907 ** Note: Link cancellation to occur at this point means
908 ** that at least two servers from my fragment are building
909 ** up connection this other fragment at the same time, it's
910 ** a race condition, not the normal way of operation...
912 ** ALSO NOTE: using the get_client_name for server names--
913 ** see previous *WARNING*!!! (Also, original inpath
916 RB_DLINK_FOREACH(ptr
, global_serv_list
.head
)
918 target_p
= ptr
->data
;
920 /* target_p->from == target_p for target_p == client_p */
921 if(IsMe(target_p
) || target_p
->from
== client_p
)
924 /* presumption, if target has an id, so does its uplink */
925 if(has_id(client_p
) && has_id(target_p
))
926 sendto_one(client_p
, ":%s SID %s %d %s :%s%s",
927 target_p
->servptr
->id
, target_p
->name
,
928 target_p
->hopcount
+ 1, target_p
->id
,
929 IsHidden(target_p
) ? "(H) " : "", target_p
->info
);
931 sendto_one(client_p
, ":%s SERVER %s %d :%s%s",
932 target_p
->servptr
->name
,
933 target_p
->name
, target_p
->hopcount
+ 1,
934 IsHidden(target_p
) ? "(H) " : "", target_p
->info
);
936 if(IsCapable(client_p
, CAP_ENCAP
) &&
937 !EmptyString(target_p
->serv
->fullcaps
))
938 sendto_one(client_p
, ":%s ENCAP * GCAP :%s",
939 get_id(target_p
, client_p
),
940 target_p
->serv
->fullcaps
);
943 if(IsCapable(client_p
, CAP_BAN
))
948 /* Always send a PING after connect burst is done */
949 sendto_one(client_p
, "PING :%s", get_id(&me
, client_p
));
951 free_pre_client(client_p
);
953 send_pop_queue(client_p
);
959 * New server connection code
960 * Based upon the stuff floating about in s_bsd.c
965 serv_connect_resolved(struct Client
*client_p
)
967 struct rb_sockaddr_storage myipnum
;
968 char vhoststr
[HOSTIPLEN
];
969 struct server_conf
*server_p
;
972 if((server_p
= client_p
->localClient
->att_sconf
) == NULL
)
974 sendto_realops_snomask(SNO_GENERAL
, is_remote_connect(client_p
) ? L_NETWIDE
: L_ALL
, "Lost connect{} block for %s",
976 exit_client(client_p
, client_p
, &me
, "Lost connect{} block");
981 if(client_p
->localClient
->ip
.ss_family
== AF_INET6
)
982 port
= ntohs(((struct sockaddr_in6
*)&client_p
->localClient
->ip
)->sin6_port
);
985 port
= ntohs(((struct sockaddr_in
*)&client_p
->localClient
->ip
)->sin_port
);
987 if(ServerConfVhosted(server_p
))
989 memcpy(&myipnum
, &server_p
->my_ipnum
, sizeof(myipnum
));
990 ((struct sockaddr_in
*)&myipnum
)->sin_port
= 0;
991 myipnum
.ss_family
= server_p
->aftype
;
994 else if(server_p
->aftype
== AF_INET
&& ServerInfo
.specific_ipv4_vhost
)
996 memcpy(&myipnum
, &ServerInfo
.ip
, sizeof(myipnum
));
997 ((struct sockaddr_in
*)&myipnum
)->sin_port
= 0;
998 myipnum
.ss_family
= AF_INET
;
999 SET_SS_LEN(&myipnum
, sizeof(struct sockaddr_in
));
1003 else if((server_p
->aftype
== AF_INET6
) && ServerInfo
.specific_ipv6_vhost
)
1005 memcpy(&myipnum
, &ServerInfo
.ip6
, sizeof(myipnum
));
1006 ((struct sockaddr_in6
*)&myipnum
)->sin6_port
= 0;
1007 myipnum
.ss_family
= AF_INET6
;
1008 SET_SS_LEN(&myipnum
, sizeof(struct sockaddr_in6
));
1014 ilog(L_SERVER
, "Connecting to %s[%s] port %d (%s)", client_p
->name
, client_p
->sockhost
, port
,
1016 server_p
->aftype
== AF_INET6
? "IPv6" :
1018 (server_p
->aftype
== AF_INET
? "IPv4" : "?"));
1020 if(ServerConfSSL(server_p
))
1022 rb_connect_tcp(client_p
->localClient
->F
, (struct sockaddr
*)&client_p
->localClient
->ip
,
1023 NULL
, 0, serv_connect_ssl_callback
,
1024 client_p
, ConfigFileEntry
.connect_timeout
);
1027 rb_connect_tcp(client_p
->localClient
->F
, (struct sockaddr
*)&client_p
->localClient
->ip
,
1028 NULL
, 0, serv_connect_callback
,
1029 client_p
, ConfigFileEntry
.connect_timeout
);
1034 rb_inet_ntop_sock((struct sockaddr
*)&myipnum
, vhoststr
, sizeof vhoststr
);
1035 ilog(L_SERVER
, "Connecting to %s[%s] port %d (%s) (vhost %s)", client_p
->name
, client_p
->sockhost
, port
,
1037 server_p
->aftype
== AF_INET6
? "IPv6" :
1039 (server_p
->aftype
== AF_INET
? "IPv4" : "?"), vhoststr
);
1042 if(ServerConfSSL(server_p
))
1043 rb_connect_tcp(client_p
->localClient
->F
, (struct sockaddr
*)&client_p
->localClient
->ip
,
1044 (struct sockaddr
*) &myipnum
,
1045 GET_SS_LEN(&myipnum
), serv_connect_ssl_callback
, client_p
,
1046 ConfigFileEntry
.connect_timeout
);
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_callback
, client_p
,
1051 ConfigFileEntry
.connect_timeout
);
1057 serv_connect_dns_callback(void *vptr
, struct DNSReply
*reply
)
1059 struct Client
*client_p
= vptr
;
1062 rb_free(client_p
->localClient
->dnsquery
);
1063 client_p
->localClient
->dnsquery
= NULL
;
1067 sendto_realops_snomask(SNO_GENERAL
, is_remote_connect(client_p
) ? L_NETWIDE
: L_ALL
, "Cannot resolve hostname for %s",
1069 ilog(L_SERVER
, "Cannot resolve hostname for %s",
1070 log_client_name(client_p
, HIDE_IP
));
1071 exit_client(client_p
, client_p
, &me
, "Cannot resolve hostname");
1075 if(reply
->addr
.ss_family
== AF_INET6
)
1076 port
= ((struct sockaddr_in6
*)&client_p
->localClient
->ip
)->sin6_port
;
1079 port
= ((struct sockaddr_in
*)&client_p
->localClient
->ip
)->sin_port
;
1080 memcpy(&client_p
->localClient
->ip
, &reply
->addr
, sizeof(client_p
->localClient
->ip
));
1082 if(reply
->addr
.ss_family
== AF_INET6
)
1083 ((struct sockaddr_in6
*)&client_p
->localClient
->ip
)->sin6_port
= port
;
1086 ((struct sockaddr_in
*)&client_p
->localClient
->ip
)->sin_port
= port
;
1087 /* Set sockhost properly now -- jilles */
1088 rb_inet_ntop_sock((struct sockaddr
*)&client_p
->localClient
->ip
,
1089 client_p
->sockhost
, sizeof client_p
->sockhost
);
1090 serv_connect_resolved(client_p
);
1094 * serv_connect() - initiate a server connection
1096 * inputs - pointer to conf
1097 * - pointer to client doing the connet
1101 * This code initiates a connection to a server. It first checks to make
1102 * sure the given server exists. If this is the case, it creates a socket,
1103 * creates a client, saves the socket information in the client, and
1104 * initiates a connection to the server through rb_connect_tcp(). The
1105 * completion of this goes through serv_completed_connection().
1107 * We return 1 if the connection is attempted, since we don't know whether
1108 * it suceeded or not, and 0 if it fails in here somewhere.
1111 serv_connect(struct server_conf
*server_p
, struct Client
*by
)
1113 struct Client
*client_p
;
1114 struct rb_sockaddr_storage theiripnum
;
1116 char note
[HOSTLEN
+ 10];
1118 s_assert(server_p
!= NULL
);
1119 if(server_p
== NULL
)
1123 * Make sure this server isn't already connected
1125 if((client_p
= find_server(NULL
, server_p
->name
)))
1127 sendto_realops_snomask(SNO_GENERAL
, L_ALL
,
1128 "Server %s already present from %s",
1129 server_p
->name
, client_p
->name
);
1130 if(by
&& IsPerson(by
) && !MyClient(by
))
1131 sendto_one_notice(by
, ":Server %s already present from %s",
1132 server_p
->name
, client_p
->name
);
1136 /* create a socket for the server connection */
1137 if((F
= rb_socket(server_p
->aftype
, SOCK_STREAM
, 0, NULL
)) == NULL
)
1139 ilog_error("opening a stream socket");
1143 rb_snprintf(note
, sizeof note
, "Server: %s", server_p
->name
);
1146 /* Create a local client */
1147 client_p
= make_client(NULL
);
1149 /* Copy in the server, hostname, fd
1150 * The sockhost may be a hostname, this will be corrected later
1153 rb_strlcpy(client_p
->name
, server_p
->name
, sizeof(client_p
->name
));
1154 rb_strlcpy(client_p
->host
, server_p
->host
, sizeof(client_p
->host
));
1155 rb_strlcpy(client_p
->sockhost
, server_p
->host
, sizeof(client_p
->sockhost
));
1156 client_p
->localClient
->F
= F
;
1157 add_to_cli_fd_hash(client_p
);
1160 * Set up the initial server evilness, ripped straight from
1161 * connect_server(), so don't blame me for it being evil.
1165 if(!rb_set_buffers(client_p
->localClient
->F
, READBUF_SIZE
))
1167 ilog_error("setting the buffer size for a server connection");
1171 * Attach config entries to client here rather than in
1172 * serv_connect_callback(). This to avoid null pointer references.
1174 attach_server_conf(client_p
, server_p
);
1177 * at this point we have a connection in progress and C/N lines
1178 * attached to the client, the socket info should be saved in the
1179 * client and it should either be resolved or have a valid address.
1181 * The socket has been connected or connect is in progress.
1183 make_server(client_p
);
1184 if(by
&& IsPerson(by
))
1186 strcpy(client_p
->serv
->by
, by
->name
);
1187 if(client_p
->serv
->user
)
1188 free_user(client_p
->serv
->user
, NULL
);
1189 client_p
->serv
->user
= by
->user
;
1194 strcpy(client_p
->serv
->by
, "AutoConn.");
1195 if(client_p
->serv
->user
)
1196 free_user(client_p
->serv
->user
, NULL
);
1197 client_p
->serv
->user
= NULL
;
1199 SetConnecting(client_p
);
1200 rb_dlinkAddTail(client_p
, &client_p
->node
, &global_client_list
);
1202 if (rb_inet_pton_sock(server_p
->host
, (struct sockaddr
*)&theiripnum
) > 0)
1204 memcpy(&client_p
->localClient
->ip
, &theiripnum
, sizeof(client_p
->localClient
->ip
));
1206 if(theiripnum
.ss_family
== AF_INET6
)
1207 ((struct sockaddr_in6
*)&client_p
->localClient
->ip
)->sin6_port
= htons(server_p
->port
);
1210 ((struct sockaddr_in
*)&client_p
->localClient
->ip
)->sin_port
= htons(server_p
->port
);
1212 return serv_connect_resolved(client_p
);
1217 if(theiripnum
.ss_family
== AF_INET6
)
1218 ((struct sockaddr_in6
*)&client_p
->localClient
->ip
)->sin6_port
= htons(server_p
->port
);
1221 ((struct sockaddr_in
*)&client_p
->localClient
->ip
)->sin_port
= htons(server_p
->port
);
1223 client_p
->localClient
->dnsquery
= rb_malloc(sizeof(struct DNSQuery
));
1224 client_p
->localClient
->dnsquery
->ptr
= client_p
;
1225 client_p
->localClient
->dnsquery
->callback
= serv_connect_dns_callback
;
1226 gethost_byname_type(server_p
->host
, client_p
->localClient
->dnsquery
,
1228 server_p
->aftype
== AF_INET6
? T_AAAA
:
1236 serv_connect_ssl_callback(rb_fde_t
*F
, int status
, void *data
)
1238 struct Client
*client_p
= data
;
1240 rb_connect_sockaddr(F
, (struct sockaddr
*)&client_p
->localClient
->ip
, sizeof(client_p
->localClient
->ip
));
1243 /* Print error message, just like non-SSL. */
1244 serv_connect_callback(F
, status
, data
);
1247 if(rb_socketpair(AF_UNIX
, SOCK_STREAM
, 0, &xF
[0], &xF
[1], "Outgoing ssld connection") == -1)
1249 ilog_error("rb_socketpair failed for server");
1250 serv_connect_callback(F
, RB_ERROR
, data
);
1254 del_from_cli_fd_hash(client_p
);
1255 client_p
->localClient
->F
= xF
[0];
1256 add_to_cli_fd_hash(client_p
);
1258 client_p
->localClient
->ssl_ctl
= start_ssld_connect(F
, xF
[1], rb_get_fd(xF
[0]));
1260 serv_connect_callback(client_p
->localClient
->F
, RB_OK
, client_p
);
1264 * serv_connect_callback() - complete a server connection.
1266 * This routine is called after the server connection attempt has
1267 * completed. If unsucessful, an error is sent to ops and the client
1268 * is closed. If sucessful, it goes through the initialisation/check
1269 * procedures, the capabilities are sent, and the socket is then
1270 * marked for reading.
1273 serv_connect_callback(rb_fde_t
*F
, int status
, void *data
)
1275 struct Client
*client_p
= data
;
1276 struct server_conf
*server_p
;
1279 /* First, make sure its a real client! */
1280 s_assert(client_p
!= NULL
);
1281 s_assert(client_p
->localClient
->F
== F
);
1283 if(client_p
== NULL
)
1286 /* while we were waiting for the callback, its possible this already
1289 if(find_server(NULL
, client_p
->name
) != NULL
)
1291 exit_client(client_p
, client_p
, &me
, "Server Exists");
1295 if(client_p
->localClient
->ssl_ctl
== NULL
)
1296 rb_connect_sockaddr(F
, (struct sockaddr
*)&client_p
->localClient
->ip
, sizeof(client_p
->localClient
->ip
));
1298 /* Check the status */
1301 /* COMM_ERR_TIMEOUT wont have an errno associated with it,
1302 * the others will.. --fl
1304 if(status
== RB_ERR_TIMEOUT
)
1306 sendto_realops_snomask(SNO_GENERAL
, is_remote_connect(client_p
) ? L_NETWIDE
: L_ALL
,
1307 "Error connecting to %s[%s]: %s",
1311 ilog(L_SERVER
, "Error connecting to %s[%s]: %s",
1312 client_p
->name
, client_p
->sockhost
,
1317 errstr
= strerror(rb_get_sockerr(F
));
1318 sendto_realops_snomask(SNO_GENERAL
, is_remote_connect(client_p
) ? L_NETWIDE
: L_ALL
,
1319 "Error connecting to %s[%s]: %s (%s)",
1322 rb_errstr(status
), errstr
);
1323 ilog(L_SERVER
, "Error connecting to %s[%s]: %s (%s)",
1324 client_p
->name
, client_p
->sockhost
,
1325 rb_errstr(status
), errstr
);
1328 exit_client(client_p
, client_p
, &me
, rb_errstr(status
));
1332 /* COMM_OK, so continue the connection procedure */
1333 /* Get the C/N lines */
1334 if((server_p
= client_p
->localClient
->att_sconf
) == NULL
)
1336 sendto_realops_snomask(SNO_GENERAL
, is_remote_connect(client_p
) ? L_NETWIDE
: L_ALL
, "Lost connect{} block for %s",
1338 exit_client(client_p
, client_p
, &me
, "Lost connect{} block");
1342 /* Next, send the initial handshake */
1343 SetHandshake(client_p
);
1345 /* the server may be linking based on certificate fingerprint now. --nenolod */
1346 sendto_one(client_p
, "PASS %s TS %d :%s",
1347 EmptyString(server_p
->spasswd
) ? "*" : server_p
->spasswd
, TS_CURRENT
, me
.id
);
1349 /* pass my info to the new server */
1350 send_capabilities(client_p
, default_server_capabs
1351 | (ServerConfCompressed(server_p
) ? CAP_ZIP_SUPPORTED
: 0)
1352 | (ServerConfTb(server_p
) ? CAP_TB
: 0));
1354 sendto_one(client_p
, "SERVER %s 1 :%s%s",
1356 ConfigServerHide
.hidden
? "(H) " : "", me
.info
);
1359 * If we've been marked dead because a send failed, just exit
1360 * here now and save everyone the trouble of us ever existing.
1362 if(IsAnyDead(client_p
))
1364 sendto_realops_snomask(SNO_GENERAL
, is_remote_connect(client_p
) ? L_NETWIDE
: L_ALL
,
1365 "%s went dead during handshake", client_p
->name
);
1366 exit_client(client_p
, client_p
, &me
, "Went dead during handshake");
1370 /* don't move to serv_list yet -- we haven't sent a burst! */
1372 /* If we get here, we're ok, so lets start reading some data */
1373 read_packet(F
, client_p
);