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
28 #include <openssl/rsa.h>
37 #include "ircd_defs.h"
41 #include "s_newconf.h"
48 #include "channel.h" /* chcap_usage_counts stuff... */
53 #include "capability.h"
57 #define INADDR_NONE ((unsigned int) 0xffffffff)
60 int MaxConnectionCount
= 1;
61 int MaxClientCount
= 1;
62 int refresh_user_links
= 0;
64 static char buf
[BUFSIZE
];
67 * list of recognized server capabilities. "TS" is not on the list
68 * because all servers that we talk to already do TS, and the kludged
69 * extra argument to "PASS" takes care of checking that. -orabidoo
71 struct CapabilityIndex
*serv_capindex
= NULL
;
72 struct CapabilityIndex
*cli_capindex
= NULL
;
81 unsigned int CAP_KNOCK
;
83 unsigned int CAP_UNKLN
;
84 unsigned int CAP_CLUSTER
;
85 unsigned int CAP_ENCAP
;
87 unsigned int CAP_SERVICE
;
88 unsigned int CAP_RSFNC
;
89 unsigned int CAP_SAVE
;
90 unsigned int CAP_EUID
;
91 unsigned int CAP_EOPMOD
;
93 unsigned int CAP_MLOCK
;
95 unsigned int CLICAP_MULTI_PREFIX
;
96 unsigned int CLICAP_ACCOUNT_NOTIFY
;
97 unsigned int CLICAP_EXTENDED_JOIN
;
98 unsigned int CLICAP_AWAY_NOTIFY
;
99 unsigned int CLICAP_USERHOST_IN_NAMES
;
100 unsigned int CLICAP_CAP_NOTIFY
;
101 unsigned int CLICAP_CHGHOST
;
102 unsigned int CLICAP_ECHO_MESSAGE
;
103 unsigned int CLICAP_BATCH
;
106 * initialize our builtin capability table. --nenolod
109 init_builtin_capabs(void)
111 serv_capindex
= capability_index_create("server capabilities");
113 /* These two are not set via CAPAB/GCAP keywords. */
114 CAP_CAP
= capability_put_anonymous(serv_capindex
);
115 CAP_TS6
= capability_put_anonymous(serv_capindex
);
117 CAP_QS
= capability_put(serv_capindex
, "QS", NULL
);
118 CAP_EX
= capability_put(serv_capindex
, "EX", NULL
);
119 CAP_CHW
= capability_put(serv_capindex
, "CHW", NULL
);
120 CAP_IE
= capability_put(serv_capindex
, "IE", NULL
);
121 CAP_KLN
= capability_put(serv_capindex
, "KLN", NULL
);
122 CAP_KNOCK
= capability_put(serv_capindex
, "KNOCK", NULL
);
123 CAP_ZIP
= capability_put(serv_capindex
, "ZIP", NULL
);
124 CAP_TB
= capability_put(serv_capindex
, "TB", NULL
);
125 CAP_UNKLN
= capability_put(serv_capindex
, "UNKLN", NULL
);
126 CAP_CLUSTER
= capability_put(serv_capindex
, "CLUSTER", NULL
);
127 CAP_ENCAP
= capability_put(serv_capindex
, "ENCAP", NULL
);
128 CAP_SERVICE
= capability_put(serv_capindex
, "SERVICES", NULL
);
129 CAP_RSFNC
= capability_put(serv_capindex
, "RSFNC", NULL
);
130 CAP_SAVE
= capability_put(serv_capindex
, "SAVE", NULL
);
131 CAP_EUID
= capability_put(serv_capindex
, "EUID", NULL
);
132 CAP_EOPMOD
= capability_put(serv_capindex
, "EOPMOD", NULL
);
133 CAP_BAN
= capability_put(serv_capindex
, "BAN", NULL
);
134 CAP_MLOCK
= capability_put(serv_capindex
, "MLOCK", NULL
);
136 capability_require(serv_capindex
, "QS");
137 capability_require(serv_capindex
, "EX");
138 capability_require(serv_capindex
, "IE");
139 capability_require(serv_capindex
, "ENCAP");
141 cli_capindex
= capability_index_create("client capabilities");
143 CLICAP_MULTI_PREFIX
= capability_put(cli_capindex
, "multi-prefix", NULL
);
144 CLICAP_ACCOUNT_NOTIFY
= capability_put(cli_capindex
, "account-notify", NULL
);
145 CLICAP_EXTENDED_JOIN
= capability_put(cli_capindex
, "extended-join", NULL
);
146 CLICAP_AWAY_NOTIFY
= capability_put(cli_capindex
, "away-notify", NULL
);
147 CLICAP_USERHOST_IN_NAMES
= capability_put(cli_capindex
, "userhost-in-names", NULL
);
148 CLICAP_CAP_NOTIFY
= capability_put(cli_capindex
, "cap-notify", NULL
);
149 CLICAP_CHGHOST
= capability_put(cli_capindex
, "chghost", NULL
);
150 CLICAP_ECHO_MESSAGE
= capability_put(cli_capindex
, "echo-message", NULL
);
151 CLICAP_BATCH
= capability_put(cli_capindex
, "batch", NULL
);
154 static CNCB serv_connect_callback
;
155 static CNCB serv_connect_ssl_callback
;
158 * hunt_server - Do the basic thing in delivering the message (command)
159 * across the relays to the specific server (server) for
162 * Note: The command is a format string and *MUST* be
163 * of prefixed style (e.g. ":%s COMMAND %s ...").
164 * Command can have only max 8 parameters.
166 * server parv[server] is the parameter identifying the
170 * parv[server] is replaced with the pointer to the
171 * real servername from the matched client (I'm lazy
174 * returns: (see #defines)
177 hunt_server(struct Client
*client_p
, struct Client
*source_p
,
178 const char *command
, int server
, int parc
, const char *parv
[])
180 struct Client
*target_p
;
187 * Assume it's me, if no server
189 if(parc
<= server
|| EmptyString(parv
[server
]) ||
190 match(parv
[server
], me
.name
) || (strcmp(parv
[server
], me
.id
) == 0))
191 return (HUNTED_ISME
);
193 new = LOCAL_COPY(parv
[server
]);
196 * These are to pickup matches that would cause the following
197 * message to go in the wrong direction while doing quick fast
198 * non-matching lookups.
200 if(MyClient(source_p
))
201 target_p
= find_named_client(new);
203 target_p
= find_client(new);
206 if(target_p
->from
== source_p
->from
&& !MyConnect(target_p
))
210 wilds
= (strchr(new, '?') || strchr(new, '*'));
213 * Again, if there are no wild cards involved in the server
214 * name, use the hash lookup
216 if(!target_p
&& wilds
)
218 RB_DLINK_FOREACH(ptr
, global_serv_list
.head
)
220 if(match(new, ((struct Client
*) (ptr
->data
))->name
))
222 target_p
= ptr
->data
;
228 if(target_p
&& !IsRegistered(target_p
))
233 if(IsMe(target_p
) || MyClient(target_p
))
237 parv
[server
] = get_id(target_p
, target_p
);
239 sendto_one(target_p
, command
, get_id(source_p
, target_p
),
240 parv
[1], parv
[2], parv
[3], parv
[4], parv
[5], parv
[6], parv
[7], parv
[8]);
242 return (HUNTED_PASS
);
245 if(MyClient(source_p
) || !IsDigit(parv
[server
][0]))
246 sendto_one_numeric(source_p
, ERR_NOSUCHSERVER
,
247 form_str(ERR_NOSUCHSERVER
), parv
[server
]);
248 return (HUNTED_NOSUCH
);
252 * try_connections - scan through configuration and try new connections.
253 * Returns the calendar time when the next call to this
254 * function should be made latest. (No harm done if this
255 * is called earlier or later...)
258 try_connections(void *unused
)
260 struct Client
*client_p
;
261 struct server_conf
*server_p
= NULL
;
262 struct server_conf
*tmp_p
;
265 bool connecting
= false;
269 RB_DLINK_FOREACH(ptr
, server_conf_list
.head
)
273 if(ServerConfIllegal(tmp_p
) || !ServerConfAutoconn(tmp_p
))
276 /* don't allow ssl connections if ssl isn't setup */
277 if(ServerConfSSL(tmp_p
) && (!ircd_ssl_ok
|| !get_ssld_count()))
280 cltmp
= tmp_p
->class;
283 * Skip this entry if the use of it is still on hold until
284 * future. Otherwise handle this entry (and set it on hold
285 * until next time). Will reset only hold times, if already
286 * made one successfull connection... [this algorithm is
287 * a bit fuzzy... -- msa >;) ]
289 if(tmp_p
->hold
> rb_current_time())
291 if(next
> tmp_p
->hold
|| next
== 0)
296 confrq
= get_con_freq(cltmp
);
297 tmp_p
->hold
= rb_current_time() + confrq
;
300 * Found a CONNECT config with port specified, scan clients
301 * and see if this server is already connected?
303 client_p
= find_server(NULL
, tmp_p
->name
);
305 if(!client_p
&& (CurrUsers(cltmp
) < MaxUsers(cltmp
)) && !connecting
)
309 /* We connect only one at time... */
313 if((next
> tmp_p
->hold
) || (next
== 0))
317 /* TODO: change this to set active flag to 0 when added to event! --Habeeb */
318 if(GlobalSetOptions
.autoconn
== 0)
324 /* move this connect entry to end.. */
325 rb_dlinkDelete(&server_p
->node
, &server_conf_list
);
326 rb_dlinkAddTail(server_p
, &server_p
->node
, &server_conf_list
);
329 * We used to only print this if serv_connect() actually
330 * suceeded, but since rb_tcp_connect() can call the callback
331 * immediately if there is an error, we were getting error messages
332 * in the wrong order. SO, we just print out the activated line,
333 * and let serv_connect() / serv_connect_callback() print an
334 * error afterwards if it fails.
337 sendto_realops_snomask(SNO_GENERAL
, L_ALL
,
338 "Connection to %s activated",
341 serv_connect(server_p
, 0);
345 check_server(const char *name
, struct Client
*client_p
)
347 struct server_conf
*server_p
= NULL
;
348 struct server_conf
*tmp_p
;
353 s_assert(NULL
!= client_p
);
357 if(!(client_p
->localClient
->passwd
))
360 if(strlen(name
) > HOSTLEN
)
363 RB_DLINK_FOREACH(ptr
, server_conf_list
.head
)
367 if(ServerConfIllegal(tmp_p
))
370 if(!match(tmp_p
->name
, name
))
375 /* XXX: Fix me for IPv6 */
376 /* XXX sockhost is the IPv4 ip as a string */
377 if(match(tmp_p
->host
, client_p
->host
) ||
378 match(tmp_p
->host
, client_p
->sockhost
))
384 if(ServerConfEncrypted(tmp_p
))
386 encr
= rb_crypt(client_p
->localClient
->passwd
,
388 if(encr
!= NULL
&& !strcmp(tmp_p
->passwd
, encr
))
396 else if(strcmp(tmp_p
->passwd
, client_p
->localClient
->passwd
))
402 if(!client_p
->certfp
|| rb_strcasecmp(tmp_p
->certfp
, client_p
->certfp
) != 0)
414 if(ServerConfSSL(server_p
) && client_p
->localClient
->ssl_ctl
== NULL
)
419 attach_server_conf(client_p
, server_p
);
421 /* clear ZIP/TB if they support but we dont want them */
423 if(!ServerConfCompressed(server_p
))
425 ClearCap(client_p
, CAP_ZIP
);
427 if(!ServerConfTb(server_p
))
428 ClearCap(client_p
, CAP_TB
);
436 * inputs - Client pointer to send to
437 * - int flag of capabilities that this server has
439 * side effects - send the CAPAB line to a server -orabidoo
442 send_capabilities(struct Client
*client_p
, unsigned int cap_can_send
)
444 sendto_one(client_p
, "CAPAB :%s", capability_index_list(serv_capindex
, cap_can_send
));
448 burst_ban(struct Client
*client_p
)
451 struct ConfItem
*aconf
;
452 const char *type
, *oper
;
453 /* +5 for !,@,{,} and null */
454 char operbuf
[NICKLEN
+ USERLEN
+ HOSTLEN
+ HOSTLEN
+ 5];
458 melen
= strlen(me
.name
);
459 RB_DLINK_FOREACH(ptr
, prop_bans
.head
)
463 /* Skip expired stuff. */
464 if(aconf
->lifetime
< rb_current_time())
466 switch(aconf
->status
& ~CONF_ILLEGAL
)
468 case CONF_KILL
: type
= "K"; break;
469 case CONF_DLINE
: type
= "D"; break;
470 case CONF_XLINE
: type
= "X"; break;
471 case CONF_RESV_NICK
: type
= "R"; break;
472 case CONF_RESV_CHANNEL
: type
= "R"; break;
476 oper
= aconf
->info
.oper
;
477 if(aconf
->flags
& CONF_FLAGS_MYOPER
)
479 /* Our operator{} names may not be meaningful
480 * to other servers, so rewrite to our server
483 rb_strlcpy(operbuf
, aconf
->info
.oper
, sizeof buf
);
484 p
= strrchr(operbuf
, '{');
486 operbuf
+ sizeof operbuf
- p
> (ptrdiff_t)(melen
+ 2))
488 memcpy(p
+ 1, me
.name
, melen
);
494 sendto_one(client_p
, ":%s BAN %s %s %s %lu %d %d %s :%s%s%s",
497 aconf
->user
? aconf
->user
: "*", aconf
->host
,
498 (unsigned long)aconf
->created
,
499 (int)(aconf
->hold
- aconf
->created
),
500 (int)(aconf
->lifetime
- aconf
->created
),
503 aconf
->spasswd
? "|" : "",
504 aconf
->spasswd
? aconf
->spasswd
: "");
510 * input - client to burst to, channel name, list to burst, mode flag
512 * side effects - client is sent a list of +b, +e, or +I modes
515 burst_modes_TS6(struct Client
*client_p
, struct Channel
*chptr
,
516 rb_dlink_list
*list
, char flag
)
525 cur_len
= mlen
= sprintf(buf
, ":%s BMASK %ld %s %c :",
526 me
.id
, (long) chptr
->channelts
, chptr
->chname
, flag
);
529 RB_DLINK_FOREACH(ptr
, list
->head
)
533 tlen
= strlen(banptr
->banstr
) + (banptr
->forward
? strlen(banptr
->forward
) + 1 : 0) + 1;
536 if(cur_len
+ tlen
> BUFSIZE
- 3)
538 /* the one we're trying to send doesnt fit at all! */
545 /* chop off trailing space and send.. */
547 sendto_one(client_p
, "%s", buf
);
553 sprintf(t
, "%s$%s ", banptr
->banstr
, banptr
->forward
);
555 sprintf(t
, "%s ", banptr
->banstr
);
560 /* cant ever exit the loop above without having modified buf,
561 * chop off trailing space and send.
564 sendto_one(client_p
, "%s", buf
);
570 * inputs - client (server) to send nick towards
571 * - client to send nick for
573 * side effects - NICK message is sent towards given client_p
576 burst_TS6(struct Client
*client_p
)
579 struct Client
*target_p
;
580 struct Channel
*chptr
;
581 struct membership
*msptr
;
582 hook_data_client hclientinfo
;
583 hook_data_channel hchaninfo
;
590 hclientinfo
.client
= hchaninfo
.client
= client_p
;
592 RB_DLINK_FOREACH(ptr
, global_client_list
.head
)
594 target_p
= ptr
->data
;
596 if(!IsPerson(target_p
))
599 send_umode(NULL
, target_p
, 0, ubuf
);
606 if(IsCapable(client_p
, CAP_EUID
))
607 sendto_one(client_p
, ":%s EUID %s %d %ld %s %s %s %s %s %s %s :%s",
608 target_p
->servptr
->id
, target_p
->name
,
609 target_p
->hopcount
+ 1,
610 (long) target_p
->tsinfo
, ubuf
,
611 target_p
->username
, target_p
->host
,
612 IsIPSpoof(target_p
) ? "0" : target_p
->sockhost
,
614 IsDynSpoof(target_p
) ? target_p
->orighost
: "*",
615 EmptyString(target_p
->user
->suser
) ? "*" : target_p
->user
->suser
,
618 sendto_one(client_p
, ":%s UID %s %d %ld %s %s %s %s %s :%s",
619 target_p
->servptr
->id
, target_p
->name
,
620 target_p
->hopcount
+ 1,
621 (long) target_p
->tsinfo
, ubuf
,
622 target_p
->username
, target_p
->host
,
623 IsIPSpoof(target_p
) ? "0" : target_p
->sockhost
,
624 target_p
->id
, target_p
->info
);
626 if(!EmptyString(target_p
->certfp
))
627 sendto_one(client_p
, ":%s ENCAP * CERTFP :%s",
628 use_id(target_p
), target_p
->certfp
);
630 if(!IsCapable(client_p
, CAP_EUID
))
632 if(IsDynSpoof(target_p
))
633 sendto_one(client_p
, ":%s ENCAP * REALHOST %s",
634 use_id(target_p
), target_p
->orighost
);
635 if(!EmptyString(target_p
->user
->suser
))
636 sendto_one(client_p
, ":%s ENCAP * LOGIN %s",
637 use_id(target_p
), target_p
->user
->suser
);
640 if(ConfigFileEntry
.burst_away
&& !EmptyString(target_p
->user
->away
))
641 sendto_one(client_p
, ":%s AWAY :%s",
643 target_p
->user
->away
);
645 hclientinfo
.target
= target_p
;
646 call_hook(h_burst_client
, &hclientinfo
);
649 RB_DLINK_FOREACH(ptr
, global_channel_list
.head
)
653 if(*chptr
->chname
!= '#')
656 cur_len
= mlen
= sprintf(buf
, ":%s SJOIN %ld %s %s :", me
.id
,
657 (long) chptr
->channelts
, chptr
->chname
,
658 channel_modes(chptr
, client_p
));
662 RB_DLINK_FOREACH(uptr
, chptr
->members
.head
)
666 tlen
= strlen(use_id(msptr
->client_p
)) + 1;
672 if(cur_len
+ tlen
>= BUFSIZE
- 3)
675 sendto_one(client_p
, "%s", buf
);
680 sprintf(t
, "%s%s ", find_channel_status(msptr
, 1),
681 use_id(msptr
->client_p
));
687 if (rb_dlink_list_length(&chptr
->members
) > 0)
689 /* remove trailing space */
692 sendto_one(client_p
, "%s", buf
);
694 if(rb_dlink_list_length(&chptr
->banlist
) > 0)
695 burst_modes_TS6(client_p
, chptr
, &chptr
->banlist
, 'b');
697 if(IsCapable(client_p
, CAP_EX
) &&
698 rb_dlink_list_length(&chptr
->exceptlist
) > 0)
699 burst_modes_TS6(client_p
, chptr
, &chptr
->exceptlist
, 'e');
701 if(IsCapable(client_p
, CAP_IE
) &&
702 rb_dlink_list_length(&chptr
->invexlist
) > 0)
703 burst_modes_TS6(client_p
, chptr
, &chptr
->invexlist
, 'I');
705 if(rb_dlink_list_length(&chptr
->quietlist
) > 0)
706 burst_modes_TS6(client_p
, chptr
, &chptr
->quietlist
, 'q');
708 if(IsCapable(client_p
, CAP_TB
) && chptr
->topic
!= NULL
)
709 sendto_one(client_p
, ":%s TB %s %ld %s%s:%s",
710 me
.id
, chptr
->chname
, (long) chptr
->topic_time
,
711 ConfigChannel
.burst_topicwho
? chptr
->topic_info
: "",
712 ConfigChannel
.burst_topicwho
? " " : "",
715 if(IsCapable(client_p
, CAP_MLOCK
))
716 sendto_one(client_p
, ":%s MLOCK %ld %s :%s",
717 me
.id
, (long) chptr
->channelts
, chptr
->chname
,
718 EmptyString(chptr
->mode_lock
) ? "" : chptr
->mode_lock
);
720 hchaninfo
.chptr
= chptr
;
721 call_hook(h_burst_channel
, &hchaninfo
);
724 hclientinfo
.target
= NULL
;
725 call_hook(h_burst_finished
, &hclientinfo
);
729 * show_capabilities - show current server capabilities
731 * inputs - pointer to an struct Client
732 * output - pointer to static string
733 * side effects - build up string representing capabilities of server listed
736 show_capabilities(struct Client
*target_p
)
738 static char msgbuf
[BUFSIZE
];
743 rb_strlcpy(msgbuf
, " TS6", sizeof(msgbuf
));
746 rb_strlcat(msgbuf
, " SSL", sizeof(msgbuf
));
748 if(!IsServer(target_p
) || !target_p
->serv
->caps
) /* short circuit if no caps */
751 rb_strlcat(msgbuf
, " ", sizeof(msgbuf
));
752 rb_strlcat(msgbuf
, capability_index_list(serv_capindex
, target_p
->serv
->caps
), sizeof(msgbuf
));
760 * inputs - pointer to a struct Client
765 server_estab(struct Client
*client_p
)
767 struct Client
*target_p
;
768 struct server_conf
*server_p
;
769 hook_data_client hdata
;
772 char note
[HOSTLEN
+ 15];
774 s_assert(NULL
!= client_p
);
778 host
= client_p
->name
;
780 if((server_p
= client_p
->localClient
->att_sconf
) == NULL
)
782 /* This shouldn't happen, better tell the ops... -A1kmm */
783 sendto_realops_snomask(SNO_GENERAL
, is_remote_connect(client_p
) ? L_NETWIDE
: L_ALL
,
784 "Warning: Lost connect{} block for server %s!", host
);
785 return exit_client(client_p
, client_p
, client_p
, "Lost connect{} block!");
788 /* We shouldn't have to check this, it should already done before
789 * server_estab is called. -A1kmm
791 if(client_p
->localClient
->passwd
)
793 memset(client_p
->localClient
->passwd
, 0, strlen(client_p
->localClient
->passwd
));
794 rb_free(client_p
->localClient
->passwd
);
795 client_p
->localClient
->passwd
= NULL
;
798 /* Its got identd , since its a server */
801 if(IsUnknown(client_p
))
803 /* the server may be linking based on certificate fingerprint now. --nenolod */
804 sendto_one(client_p
, "PASS %s TS %d :%s",
805 EmptyString(server_p
->spasswd
) ? "*" : server_p
->spasswd
, TS_CURRENT
, me
.id
);
807 /* pass info to new server */
808 send_capabilities(client_p
, default_server_capabs
809 | (ServerConfCompressed(server_p
) ? CAP_ZIP_SUPPORTED
: 0)
810 | (ServerConfTb(server_p
) ? CAP_TB
: 0));
812 sendto_one(client_p
, "SERVER %s 1 :%s%s",
814 ConfigServerHide
.hidden
? "(H) " : "",
815 (me
.info
[0]) ? (me
.info
) : "IRCers United");
818 if(!rb_set_buffers(client_p
->localClient
->F
, READBUF_SIZE
))
819 ilog_error("rb_set_buffers failed for server");
821 /* Enable compression now */
822 if(IsCapable(client_p
, CAP_ZIP
))
824 start_zlib_session(client_p
);
826 sendto_one(client_p
, "SVINFO %d %d 0 :%ld", TS_CURRENT
, TS_MIN
, (long int)rb_current_time());
828 client_p
->servptr
= &me
;
830 if(IsAnyDead(client_p
))
831 return CLIENT_EXITED
;
835 rb_dlinkAdd(client_p
, &client_p
->lnode
, &me
.serv
->servers
);
836 rb_dlinkMoveNode(&client_p
->localClient
->tnode
, &unknown_list
, &serv_list
);
837 rb_dlinkAddTailAlloc(client_p
, &global_serv_list
);
840 add_to_id_hash(client_p
->id
, client_p
);
842 add_to_client_hash(client_p
->name
, client_p
);
843 /* doesnt duplicate client_p->serv if allocated this struct already */
844 make_server(client_p
);
846 client_p
->serv
->caps
= client_p
->localClient
->caps
;
848 if(client_p
->localClient
->fullcaps
)
850 client_p
->serv
->fullcaps
= rb_strdup(client_p
->localClient
->fullcaps
);
851 rb_free(client_p
->localClient
->fullcaps
);
852 client_p
->localClient
->fullcaps
= NULL
;
855 client_p
->serv
->nameinfo
= scache_connect(client_p
->name
, client_p
->info
, IsHidden(client_p
));
856 client_p
->localClient
->firsttime
= rb_current_time();
857 /* fixing eob timings.. -gnp */
859 if((rb_dlink_list_length(&lclient_list
) + rb_dlink_list_length(&serv_list
)) >
860 (unsigned long)MaxConnectionCount
)
861 MaxConnectionCount
= rb_dlink_list_length(&lclient_list
) +
862 rb_dlink_list_length(&serv_list
);
864 /* Show the real host/IP to admins */
865 sendto_realops_snomask(SNO_GENERAL
, L_ALL
,
866 "Link with %s established: (%s) link",
868 show_capabilities(client_p
));
870 ilog(L_SERVER
, "Link with %s established: (%s) link",
871 log_client_name(client_p
, SHOW_IP
), show_capabilities(client_p
));
874 hdata
.target
= client_p
;
875 call_hook(h_server_introduced
, &hdata
);
877 snprintf(note
, sizeof(note
), "Server: %s", client_p
->name
);
878 rb_note(client_p
->localClient
->F
, note
);
881 ** Old sendto_serv_but_one() call removed because we now
882 ** need to send different names to different servers
883 ** (domain name matching) Send new server to other servers.
885 RB_DLINK_FOREACH(ptr
, serv_list
.head
)
887 target_p
= ptr
->data
;
889 if(target_p
== client_p
)
892 if(has_id(target_p
) && has_id(client_p
))
894 sendto_one(target_p
, ":%s SID %s 2 %s :%s%s",
895 me
.id
, client_p
->name
, client_p
->id
,
896 IsHidden(client_p
) ? "(H) " : "", client_p
->info
);
898 if(!EmptyString(client_p
->serv
->fullcaps
))
899 sendto_one(target_p
, ":%s ENCAP * GCAP :%s",
900 client_p
->id
, client_p
->serv
->fullcaps
);
904 sendto_one(target_p
, ":%s SERVER %s 2 :%s%s",
905 me
.name
, client_p
->name
,
906 IsHidden(client_p
) ? "(H) " : "", client_p
->info
);
908 if(!EmptyString(client_p
->serv
->fullcaps
))
909 sendto_one(target_p
, ":%s ENCAP * GCAP :%s",
910 client_p
->name
, client_p
->serv
->fullcaps
);
915 ** Pass on my client information to the new server
917 ** First, pass only servers (idea is that if the link gets
918 ** cancelled beacause the server was already there,
919 ** there are no NICK's to be cancelled...). Of course,
920 ** if cancellation occurs, all this info is sent anyway,
921 ** and I guess the link dies when a read is attempted...? --msa
923 ** Note: Link cancellation to occur at this point means
924 ** that at least two servers from my fragment are building
925 ** up connection this other fragment at the same time, it's
926 ** a race condition, not the normal way of operation...
928 ** ALSO NOTE: using the get_client_name for server names--
929 ** see previous *WARNING*!!! (Also, original inpath
932 RB_DLINK_FOREACH(ptr
, global_serv_list
.head
)
934 target_p
= ptr
->data
;
936 /* target_p->from == target_p for target_p == client_p */
937 if(IsMe(target_p
) || target_p
->from
== client_p
)
940 /* presumption, if target has an id, so does its uplink */
941 if(has_id(client_p
) && has_id(target_p
))
942 sendto_one(client_p
, ":%s SID %s %d %s :%s%s",
943 target_p
->servptr
->id
, target_p
->name
,
944 target_p
->hopcount
+ 1, target_p
->id
,
945 IsHidden(target_p
) ? "(H) " : "", target_p
->info
);
947 sendto_one(client_p
, ":%s SERVER %s %d :%s%s",
948 target_p
->servptr
->name
,
949 target_p
->name
, target_p
->hopcount
+ 1,
950 IsHidden(target_p
) ? "(H) " : "", target_p
->info
);
952 if(!EmptyString(target_p
->serv
->fullcaps
))
953 sendto_one(client_p
, ":%s ENCAP * GCAP :%s",
954 get_id(target_p
, client_p
),
955 target_p
->serv
->fullcaps
);
958 if(IsCapable(client_p
, CAP_BAN
))
963 /* Always send a PING after connect burst is done */
964 sendto_one(client_p
, "PING :%s", get_id(&me
, client_p
));
966 free_pre_client(client_p
);
968 send_pop_queue(client_p
);
974 * New server connection code
975 * Based upon the stuff floating about in s_bsd.c
980 * serv_connect() - initiate a server connection
982 * inputs - pointer to conf
983 * - pointer to client doing the connet
987 * This code initiates a connection to a server. It first checks to make
988 * sure the given server exists. If this is the case, it creates a socket,
989 * creates a client, saves the socket information in the client, and
990 * initiates a connection to the server through rb_connect_tcp(). The
991 * completion of this goes through serv_completed_connection().
993 * We return 1 if the connection is attempted, since we don't know whether
994 * it suceeded or not, and 0 if it fails in here somewhere.
997 serv_connect(struct server_conf
*server_p
, struct Client
*by
)
999 struct Client
*client_p
;
1000 struct rb_sockaddr_storage myipnum
;
1001 char note
[HOSTLEN
+ 10];
1004 s_assert(server_p
!= NULL
);
1005 if(server_p
== NULL
)
1009 rb_inet_ntop_sock((struct sockaddr
*)&server_p
->my_ipnum
, buf
, sizeof(buf
));
1010 ilog(L_SERVER
, "Connect to *[%s] @%s", server_p
->name
, buf
);
1013 * Make sure this server isn't already connected
1015 if((client_p
= find_server(NULL
, server_p
->name
)))
1017 sendto_realops_snomask(SNO_GENERAL
, L_ALL
,
1018 "Server %s already present from %s",
1019 server_p
->name
, client_p
->name
);
1020 if(by
&& IsPerson(by
) && !MyClient(by
))
1021 sendto_one_notice(by
, ":Server %s already present from %s",
1022 server_p
->name
, client_p
->name
);
1026 /* create a socket for the server connection */
1027 if((F
= rb_socket(GET_SS_FAMILY(&server_p
->my_ipnum
), SOCK_STREAM
, 0, NULL
)) == NULL
)
1029 ilog_error("opening a stream socket");
1033 /* servernames are always guaranteed under HOSTLEN chars */
1034 snprintf(note
, sizeof(note
), "Server: %s", server_p
->name
);
1037 /* Create a local client */
1038 client_p
= make_client(NULL
);
1040 /* Copy in the server, hostname, fd */
1041 rb_strlcpy(client_p
->name
, server_p
->name
, sizeof(client_p
->name
));
1042 rb_strlcpy(client_p
->host
, server_p
->host
, sizeof(client_p
->host
));
1043 rb_strlcpy(client_p
->sockhost
, buf
, sizeof(client_p
->sockhost
));
1044 client_p
->localClient
->F
= F
;
1045 /* shove the port number into the sockaddr */
1046 SET_SS_PORT(&server_p
->my_ipnum
, htons(server_p
->port
));
1049 * Set up the initial server evilness, ripped straight from
1050 * connect_server(), so don't blame me for it being evil.
1054 if(!rb_set_buffers(client_p
->localClient
->F
, READBUF_SIZE
))
1056 ilog_error("setting the buffer size for a server connection");
1060 * Attach config entries to client here rather than in
1061 * serv_connect_callback(). This to avoid null pointer references.
1063 attach_server_conf(client_p
, server_p
);
1066 * at this point we have a connection in progress and C/N lines
1067 * attached to the client, the socket info should be saved in the
1068 * client and it should either be resolved or have a valid address.
1070 * The socket has been connected or connect is in progress.
1072 make_server(client_p
);
1073 if(by
&& IsClient(by
))
1074 strcpy(client_p
->serv
->by
, by
->name
);
1076 strcpy(client_p
->serv
->by
, "AutoConn.");
1078 SetConnecting(client_p
);
1079 rb_dlinkAddTail(client_p
, &client_p
->node
, &global_client_list
);
1081 if(ServerConfVhosted(server_p
))
1083 memcpy(&myipnum
, &server_p
->my_ipnum
, sizeof(myipnum
));
1084 SET_SS_FAMILY(&myipnum
, GET_SS_FAMILY(&server_p
->my_ipnum
));
1085 SET_SS_PORT(&myipnum
, 0);
1088 else if(GET_SS_FAMILY(&server_p
->my_ipnum
) == AF_INET
&& ServerInfo
.specific_ipv4_vhost
)
1090 memcpy(&myipnum
, &ServerInfo
.ip
, sizeof(myipnum
));
1091 SET_SS_FAMILY(&myipnum
, AF_INET
);
1092 SET_SS_PORT(&myipnum
, 0);
1093 SET_SS_LEN(&myipnum
, sizeof(struct sockaddr_in
));
1097 else if((GET_SS_FAMILY(&server_p
->my_ipnum
) == AF_INET6
) && ServerInfo
.specific_ipv6_vhost
)
1099 memcpy(&myipnum
, &ServerInfo
.ip6
, sizeof(myipnum
));
1100 SET_SS_FAMILY(&myipnum
, AF_INET6
);
1101 SET_SS_PORT(&myipnum
, 0);
1102 SET_SS_LEN(&myipnum
, sizeof(struct sockaddr_in6
));
1107 if(ServerConfSSL(server_p
))
1109 rb_connect_tcp(client_p
->localClient
->F
,
1110 (struct sockaddr
*)&server_p
->my_ipnum
, NULL
, 0,
1111 serv_connect_ssl_callback
, client_p
,
1112 ConfigFileEntry
.connect_timeout
);
1115 rb_connect_tcp(client_p
->localClient
->F
,
1116 (struct sockaddr
*)&server_p
->my_ipnum
, NULL
, 0,
1117 serv_connect_callback
, client_p
,
1118 ConfigFileEntry
.connect_timeout
);
1122 if(ServerConfSSL(server_p
))
1123 rb_connect_tcp(client_p
->localClient
->F
, (struct sockaddr
*)&server_p
->my_ipnum
,
1124 (struct sockaddr
*)&myipnum
,
1125 GET_SS_LEN(&myipnum
), serv_connect_ssl_callback
, client_p
,
1126 ConfigFileEntry
.connect_timeout
);
1128 rb_connect_tcp(client_p
->localClient
->F
, (struct sockaddr
*)&server_p
->my_ipnum
,
1129 (struct sockaddr
*)&myipnum
,
1130 GET_SS_LEN(&myipnum
), serv_connect_callback
, client_p
,
1131 ConfigFileEntry
.connect_timeout
);
1137 serv_connect_ssl_callback(rb_fde_t
*F
, int status
, void *data
)
1139 struct Client
*client_p
= data
;
1141 rb_connect_sockaddr(F
, (struct sockaddr
*)&client_p
->localClient
->ip
, sizeof(client_p
->localClient
->ip
));
1144 /* Print error message, just like non-SSL. */
1145 serv_connect_callback(F
, status
, data
);
1148 if(rb_socketpair(AF_UNIX
, SOCK_STREAM
, 0, &xF
[0], &xF
[1], "Outgoing ssld connection") == -1)
1150 ilog_error("rb_socketpair failed for server");
1151 serv_connect_callback(F
, RB_ERROR
, data
);
1155 client_p
->localClient
->F
= xF
[0];
1157 client_p
->localClient
->ssl_ctl
= start_ssld_connect(F
, xF
[1], connid_get(client_p
));
1158 if(!client_p
->localClient
->ssl_ctl
)
1160 serv_connect_callback(client_p
->localClient
->F
, RB_ERROR
, data
);
1164 serv_connect_callback(client_p
->localClient
->F
, RB_OK
, client_p
);
1168 * serv_connect_callback() - complete a server connection.
1170 * This routine is called after the server connection attempt has
1171 * completed. If unsucessful, an error is sent to ops and the client
1172 * is closed. If sucessful, it goes through the initialisation/check
1173 * procedures, the capabilities are sent, and the socket is then
1174 * marked for reading.
1177 serv_connect_callback(rb_fde_t
*F
, int status
, void *data
)
1179 struct Client
*client_p
= data
;
1180 struct server_conf
*server_p
;
1183 /* First, make sure its a real client! */
1184 s_assert(client_p
!= NULL
);
1185 s_assert(client_p
->localClient
->F
== F
);
1187 if(client_p
== NULL
)
1190 /* while we were waiting for the callback, its possible this already
1193 if(find_server(NULL
, client_p
->name
) != NULL
)
1195 exit_client(client_p
, client_p
, &me
, "Server Exists");
1199 if(client_p
->localClient
->ssl_ctl
== NULL
)
1200 rb_connect_sockaddr(F
, (struct sockaddr
*)&client_p
->localClient
->ip
, sizeof(client_p
->localClient
->ip
));
1202 /* Check the status */
1205 /* COMM_ERR_TIMEOUT wont have an errno associated with it,
1206 * the others will.. --fl
1208 if(status
== RB_ERR_TIMEOUT
)
1210 sendto_realops_snomask(SNO_GENERAL
, is_remote_connect(client_p
) ? L_NETWIDE
: L_ALL
,
1211 "Error connecting to %s[%s]: %s",
1215 ilog(L_SERVER
, "Error connecting to %s[%s]: %s",
1216 client_p
->name
, client_p
->sockhost
,
1221 errstr
= strerror(rb_get_sockerr(F
));
1222 sendto_realops_snomask(SNO_GENERAL
, is_remote_connect(client_p
) ? L_NETWIDE
: L_ALL
,
1223 "Error connecting to %s[%s]: %s (%s)",
1226 rb_errstr(status
), errstr
);
1227 ilog(L_SERVER
, "Error connecting to %s[%s]: %s (%s)",
1228 client_p
->name
, client_p
->sockhost
,
1229 rb_errstr(status
), errstr
);
1232 exit_client(client_p
, client_p
, &me
, rb_errstr(status
));
1236 /* COMM_OK, so continue the connection procedure */
1237 /* Get the C/N lines */
1238 if((server_p
= client_p
->localClient
->att_sconf
) == NULL
)
1240 sendto_realops_snomask(SNO_GENERAL
, is_remote_connect(client_p
) ? L_NETWIDE
: L_ALL
, "Lost connect{} block for %s",
1242 exit_client(client_p
, client_p
, &me
, "Lost connect{} block");
1246 /* Next, send the initial handshake */
1247 SetHandshake(client_p
);
1249 /* the server may be linking based on certificate fingerprint now. --nenolod */
1250 sendto_one(client_p
, "PASS %s TS %d :%s",
1251 EmptyString(server_p
->spasswd
) ? "*" : server_p
->spasswd
, TS_CURRENT
, me
.id
);
1253 /* pass my info to the new server */
1254 send_capabilities(client_p
, default_server_capabs
1255 | (ServerConfCompressed(server_p
) ? CAP_ZIP_SUPPORTED
: 0)
1256 | (ServerConfTb(server_p
) ? CAP_TB
: 0));
1258 sendto_one(client_p
, "SERVER %s 1 :%s%s",
1260 ConfigServerHide
.hidden
? "(H) " : "", me
.info
);
1263 * If we've been marked dead because a send failed, just exit
1264 * here now and save everyone the trouble of us ever existing.
1266 if(IsAnyDead(client_p
))
1268 sendto_realops_snomask(SNO_GENERAL
, is_remote_connect(client_p
) ? L_NETWIDE
: L_ALL
,
1269 "%s went dead during handshake", client_p
->name
);
1270 exit_client(client_p
, client_p
, &me
, "Went dead during handshake");
1274 /* don't move to serv_list yet -- we haven't sent a burst! */
1276 /* If we get here, we're ok, so lets start reading some data */
1277 read_packet(F
, client_p
);