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... */
59 #define INADDR_NONE ((unsigned int) 0xffffffff)
62 #ifndef HAVE_SOCKETPAIR
63 static int inet_socketpair(int d
, int type
, int protocol
, int sv
[2]);
66 int MaxConnectionCount
= 1;
67 int MaxClientCount
= 1;
68 int refresh_user_links
= 0;
70 static char buf
[BUFSIZE
];
73 * list of recognized server capabilities. "TS" is not on the list
74 * because all servers that we talk to already do TS, and the kludged
75 * extra argument to "PASS" takes care of checking that. -orabidoo
77 struct Capability captab
[] = {
84 { "KNOCK", CAP_KNOCK
},
87 { "UNKLN", CAP_UNKLN
},
88 { "CLUSTER", CAP_CLUSTER
},
89 { "ENCAP", CAP_ENCAP
},
90 { "SERVICES", CAP_SERVICE
},
91 { "RSFNC", CAP_RSFNC
},
97 static CNCB serv_connect_callback
;
98 static CNCB serv_connect_ssl_callback
;
101 * hunt_server - Do the basic thing in delivering the message (command)
102 * across the relays to the specific server (server) for
105 * Note: The command is a format string and *MUST* be
106 * of prefixed style (e.g. ":%s COMMAND %s ...").
107 * Command can have only max 8 parameters.
109 * server parv[server] is the parameter identifying the
113 * parv[server] is replaced with the pointer to the
114 * real servername from the matched client (I'm lazy
117 * returns: (see #defines)
120 hunt_server(struct Client
*client_p
, struct Client
*source_p
,
121 const char *command
, int server
, int parc
, const char *parv
[])
123 struct Client
*target_p
;
130 * Assume it's me, if no server
132 if(parc
<= server
|| EmptyString(parv
[server
]) ||
133 match(parv
[server
], me
.name
) || (strcmp(parv
[server
], me
.id
) == 0))
134 return (HUNTED_ISME
);
136 new = LOCAL_COPY(parv
[server
]);
139 * These are to pickup matches that would cause the following
140 * message to go in the wrong direction while doing quick fast
141 * non-matching lookups.
143 if(MyClient(source_p
))
144 target_p
= find_named_client(new);
146 target_p
= find_client(new);
149 if(target_p
->from
== source_p
->from
&& !MyConnect(target_p
))
153 wilds
= (strchr(new, '?') || strchr(new, '*'));
156 * Again, if there are no wild cards involved in the server
157 * name, use the hash lookup
159 if(!target_p
&& wilds
)
161 RB_DLINK_FOREACH(ptr
, global_client_list
.head
)
163 if(match(new, ((struct Client
*) (ptr
->data
))->name
))
165 target_p
= ptr
->data
;
171 if(target_p
&& !IsRegistered(target_p
))
176 if(IsMe(target_p
) || MyClient(target_p
))
180 parv
[server
] = get_id(target_p
, target_p
);
182 sendto_one(target_p
, command
, get_id(source_p
, target_p
),
183 parv
[1], parv
[2], parv
[3], parv
[4], parv
[5], parv
[6], parv
[7], parv
[8]);
185 return (HUNTED_PASS
);
188 if(MyClient(source_p
) || !IsDigit(parv
[server
][0]))
189 sendto_one_numeric(source_p
, ERR_NOSUCHSERVER
,
190 form_str(ERR_NOSUCHSERVER
), parv
[server
]);
191 return (HUNTED_NOSUCH
);
195 * try_connections - scan through configuration and try new connections.
196 * Returns the calendar time when the next call to this
197 * function should be made latest. (No harm done if this
198 * is called earlier or later...)
201 try_connections(void *unused
)
203 struct Client
*client_p
;
204 struct server_conf
*server_p
= NULL
;
205 struct server_conf
*tmp_p
;
208 int connecting
= FALSE
;
212 RB_DLINK_FOREACH(ptr
, server_conf_list
.head
)
216 if(ServerConfIllegal(tmp_p
) || !ServerConfAutoconn(tmp_p
))
219 /* don't allow ssl connections if ssl isn't setup */
220 if(ServerConfSSL(tmp_p
) && (!ssl_ok
|| !get_ssld_count()))
223 cltmp
= tmp_p
->class;
226 * Skip this entry if the use of it is still on hold until
227 * future. Otherwise handle this entry (and set it on hold
228 * until next time). Will reset only hold times, if already
229 * made one successfull connection... [this algorithm is
230 * a bit fuzzy... -- msa >;) ]
232 if(tmp_p
->hold
> rb_current_time())
234 if(next
> tmp_p
->hold
|| next
== 0)
239 confrq
= get_con_freq(cltmp
);
240 tmp_p
->hold
= rb_current_time() + confrq
;
243 * Found a CONNECT config with port specified, scan clients
244 * and see if this server is already connected?
246 client_p
= find_server(NULL
, tmp_p
->name
);
248 if(!client_p
&& (CurrUsers(cltmp
) < MaxUsers(cltmp
)) && !connecting
)
252 /* We connect only one at time... */
256 if((next
> tmp_p
->hold
) || (next
== 0))
260 /* TODO: change this to set active flag to 0 when added to event! --Habeeb */
261 if(GlobalSetOptions
.autoconn
== 0)
267 /* move this connect entry to end.. */
268 rb_dlinkDelete(&server_p
->node
, &server_conf_list
);
269 rb_dlinkAddTail(server_p
, &server_p
->node
, &server_conf_list
);
272 * We used to only print this if serv_connect() actually
273 * suceeded, but since rb_tcp_connect() can call the callback
274 * immediately if there is an error, we were getting error messages
275 * in the wrong order. SO, we just print out the activated line,
276 * and let serv_connect() / serv_connect_callback() print an
277 * error afterwards if it fails.
280 sendto_realops_snomask(SNO_GENERAL
, L_ALL
,
281 "Connection to %s activated",
284 serv_connect(server_p
, 0);
288 check_server(const char *name
, struct Client
*client_p
)
290 struct server_conf
*server_p
= NULL
;
291 struct server_conf
*tmp_p
;
295 s_assert(NULL
!= client_p
);
299 if(!(client_p
->localClient
->passwd
))
302 if(strlen(name
) > HOSTLEN
)
305 RB_DLINK_FOREACH(ptr
, server_conf_list
.head
)
309 if(ServerConfIllegal(tmp_p
))
312 if(!match(tmp_p
->name
, name
))
317 /* XXX: Fix me for IPv6 */
318 /* XXX sockhost is the IPv4 ip as a string */
319 if(match(tmp_p
->host
, client_p
->host
) ||
320 match(tmp_p
->host
, client_p
->sockhost
))
324 if(ServerConfEncrypted(tmp_p
))
326 if(!strcmp(tmp_p
->passwd
, rb_crypt(client_p
->localClient
->passwd
,
333 else if(!strcmp(tmp_p
->passwd
, client_p
->localClient
->passwd
))
344 if(ServerConfSSL(server_p
) && client_p
->localClient
->ssl_ctl
== NULL
)
349 attach_server_conf(client_p
, server_p
);
351 /* clear ZIP/TB if they support but we dont want them */
353 if(!ServerConfCompressed(server_p
))
355 ClearCap(client_p
, CAP_ZIP
);
357 if(!ServerConfTb(server_p
))
358 ClearCap(client_p
, CAP_TB
);
366 * inputs - Client pointer to send to
367 * - int flag of capabilities that this server has
369 * side effects - send the CAPAB line to a server -orabidoo
373 send_capabilities(struct Client
*client_p
, int cap_can_send
)
375 struct Capability
*cap
;
376 char msgbuf
[BUFSIZE
];
382 for (cap
= captab
; cap
->name
; ++cap
)
384 if(cap
->cap
& cap_can_send
)
386 tl
= rb_sprintf(t
, "%s ", cap
->name
);
394 sendto_one(client_p
, "CAPAB :%s", msgbuf
);
399 * input - client to burst to, channel name, list to burst, mode flag
401 * side effects - client is sent a list of +b, +e, or +I modes
404 burst_modes_TS6(struct Client
*client_p
, struct Channel
*chptr
,
405 rb_dlink_list
*list
, char flag
)
414 cur_len
= mlen
= rb_sprintf(buf
, ":%s BMASK %ld %s %c :",
415 me
.id
, (long) chptr
->channelts
, chptr
->chname
, flag
);
418 RB_DLINK_FOREACH(ptr
, list
->head
)
422 tlen
= strlen(banptr
->banstr
) + 1;
425 if(cur_len
+ tlen
> BUFSIZE
- 3)
427 /* the one we're trying to send doesnt fit at all! */
434 /* chop off trailing space and send.. */
436 sendto_one(client_p
, "%s", buf
);
441 rb_sprintf(t
, "%s ", banptr
->banstr
);
446 /* cant ever exit the loop above without having modified buf,
447 * chop off trailing space and send.
450 sendto_one(client_p
, "%s", buf
);
456 * inputs - client (server) to send nick towards
457 * - client to send nick for
459 * side effects - NICK message is sent towards given client_p
462 burst_TS6(struct Client
*client_p
)
464 static char ubuf
[12];
465 struct Client
*target_p
;
466 struct Channel
*chptr
;
467 struct membership
*msptr
;
468 hook_data_client hclientinfo
;
469 hook_data_channel hchaninfo
;
476 hclientinfo
.client
= hchaninfo
.client
= client_p
;
478 RB_DLINK_FOREACH(ptr
, global_client_list
.head
)
480 target_p
= ptr
->data
;
482 if(!IsPerson(target_p
))
485 send_umode(NULL
, target_p
, 0, 0, ubuf
);
492 if(IsCapable(client_p
, CAP_EUID
))
493 sendto_one(client_p
, ":%s EUID %s %d %ld %s %s %s %s %s %s %s :%s",
494 target_p
->servptr
->id
, target_p
->name
,
495 target_p
->hopcount
+ 1,
496 (long) target_p
->tsinfo
, ubuf
,
497 target_p
->username
, target_p
->host
,
498 IsIPSpoof(target_p
) ? "0" : target_p
->sockhost
,
500 IsDynSpoof(target_p
) ? target_p
->orighost
: "*",
501 EmptyString(target_p
->user
->suser
) ? "*" : target_p
->user
->suser
,
504 sendto_one(client_p
, ":%s UID %s %d %ld %s %s %s %s %s :%s",
505 target_p
->servptr
->id
, target_p
->name
,
506 target_p
->hopcount
+ 1,
507 (long) target_p
->tsinfo
, ubuf
,
508 target_p
->username
, target_p
->host
,
509 IsIPSpoof(target_p
) ? "0" : target_p
->sockhost
,
510 target_p
->id
, target_p
->info
);
512 if(!IsCapable(client_p
, CAP_EUID
))
514 if(IsDynSpoof(target_p
))
515 sendto_one(client_p
, ":%s ENCAP * REALHOST %s",
516 use_id(target_p
), target_p
->orighost
);
517 if(!EmptyString(target_p
->user
->suser
))
518 sendto_one(client_p
, ":%s ENCAP * LOGIN %s",
519 use_id(target_p
), target_p
->user
->suser
);
522 if(ConfigFileEntry
.burst_away
&& !EmptyString(target_p
->user
->away
))
523 sendto_one(client_p
, ":%s AWAY :%s",
525 target_p
->user
->away
);
527 hclientinfo
.target
= target_p
;
528 call_hook(h_burst_client
, &hclientinfo
);
531 RB_DLINK_FOREACH(ptr
, global_channel_list
.head
)
535 if(*chptr
->chname
!= '#')
538 cur_len
= mlen
= rb_sprintf(buf
, ":%s SJOIN %ld %s %s :", me
.id
,
539 (long) chptr
->channelts
, chptr
->chname
,
540 channel_modes(chptr
, client_p
));
544 RB_DLINK_FOREACH(uptr
, chptr
->members
.head
)
548 tlen
= strlen(use_id(msptr
->client_p
)) + 1;
554 if(cur_len
+ tlen
>= BUFSIZE
- 3)
557 sendto_one(client_p
, "%s", buf
);
562 rb_sprintf(t
, "%s%s ", find_channel_status(msptr
, 1),
563 use_id(msptr
->client_p
));
569 if (rb_dlink_list_length(&chptr
->members
) > 0)
571 /* remove trailing space */
574 sendto_one(client_p
, "%s", buf
);
576 if(rb_dlink_list_length(&chptr
->banlist
) > 0)
577 burst_modes_TS6(client_p
, chptr
, &chptr
->banlist
, 'b');
579 if(IsCapable(client_p
, CAP_EX
) &&
580 rb_dlink_list_length(&chptr
->exceptlist
) > 0)
581 burst_modes_TS6(client_p
, chptr
, &chptr
->exceptlist
, 'e');
583 if(IsCapable(client_p
, CAP_IE
) &&
584 rb_dlink_list_length(&chptr
->invexlist
) > 0)
585 burst_modes_TS6(client_p
, chptr
, &chptr
->invexlist
, 'I');
587 if(rb_dlink_list_length(&chptr
->quietlist
) > 0)
588 burst_modes_TS6(client_p
, chptr
, &chptr
->quietlist
, 'q');
590 if(IsCapable(client_p
, CAP_TB
) && chptr
->topic
!= NULL
)
591 sendto_one(client_p
, ":%s TB %s %ld %s%s:%s",
592 me
.id
, chptr
->chname
, (long) chptr
->topic_time
,
593 ConfigChannel
.burst_topicwho
? chptr
->topic_info
: "",
594 ConfigChannel
.burst_topicwho
? " " : "",
597 hchaninfo
.chptr
= chptr
;
598 call_hook(h_burst_channel
, &hchaninfo
);
601 hclientinfo
.target
= NULL
;
602 call_hook(h_burst_finished
, &hclientinfo
);
606 * show_capabilities - show current server capabilities
608 * inputs - pointer to an struct Client
609 * output - pointer to static string
610 * side effects - build up string representing capabilities of server listed
613 show_capabilities(struct Client
*target_p
)
615 static char msgbuf
[BUFSIZE
];
616 struct Capability
*cap
;
619 rb_strlcpy(msgbuf
, " TS6", sizeof(msgbuf
));
622 rb_strlcat(msgbuf
, " SSL", sizeof(msgbuf
));
624 if(!IsServer(target_p
) || !target_p
->serv
->caps
) /* short circuit if no caps */
627 for (cap
= captab
; cap
->cap
; ++cap
)
629 if(cap
->cap
& target_p
->serv
->caps
)
630 rb_snprintf_append(msgbuf
, sizeof(msgbuf
), " %s", cap
->name
);
639 * inputs - pointer to a struct Client
644 server_estab(struct Client
*client_p
)
646 struct Client
*target_p
;
647 struct server_conf
*server_p
;
648 hook_data_client hdata
;
651 char note
[HOSTLEN
+ 15];
653 s_assert(NULL
!= client_p
);
657 host
= client_p
->name
;
659 if((server_p
= client_p
->localClient
->att_sconf
) == NULL
)
661 /* This shouldn't happen, better tell the ops... -A1kmm */
662 sendto_realops_snomask(SNO_GENERAL
, is_remote_connect(client_p
) ? L_NETWIDE
: L_ALL
,
663 "Warning: Lost connect{} block for server %s!", host
);
664 return exit_client(client_p
, client_p
, client_p
, "Lost connect{} block!");
667 /* We shouldn't have to check this, it should already done before
668 * server_estab is called. -A1kmm
670 if(client_p
->localClient
->passwd
)
672 memset(client_p
->localClient
->passwd
, 0, strlen(client_p
->localClient
->passwd
));
673 rb_free(client_p
->localClient
->passwd
);
674 client_p
->localClient
->passwd
= NULL
;
677 /* Its got identd , since its a server */
680 /* If there is something in the serv_list, it might be this
681 * connecting server..
683 if(!ServerInfo
.hub
&& serv_list
.head
)
685 if(client_p
!= serv_list
.head
->data
|| serv_list
.head
->next
)
687 ServerStats
.is_ref
++;
688 sendto_one(client_p
, "ERROR :I'm a leaf not a hub");
689 return exit_client(client_p
, client_p
, client_p
, "I'm a leaf");
693 if(IsUnknown(client_p
))
696 * jdc -- 1. Use EmptyString(), not [0] index reference.
697 * 2. Check ->spasswd, not ->passwd.
699 if(!EmptyString(server_p
->spasswd
))
701 sendto_one(client_p
, "PASS %s TS %d :%s",
702 server_p
->spasswd
, TS_CURRENT
, me
.id
);
705 /* pass info to new server */
706 send_capabilities(client_p
, default_server_capabs
707 | (ServerConfCompressed(server_p
) ? CAP_ZIP_SUPPORTED
: 0)
708 | (ServerConfTb(server_p
) ? CAP_TB
: 0));
710 sendto_one(client_p
, "SERVER %s 1 :%s%s",
712 ConfigServerHide
.hidden
? "(H) " : "",
713 (me
.info
[0]) ? (me
.info
) : "IRCers United");
716 if(!rb_set_buffers(client_p
->localClient
->F
, READBUF_SIZE
))
717 ilog_error("rb_set_buffers failed for server");
719 /* Enable compression now */
720 if(IsCapable(client_p
, CAP_ZIP
))
722 start_zlib_session(client_p
);
724 sendto_one(client_p
, "SVINFO %d %d 0 :%ld", TS_CURRENT
, TS_MIN
, (long int)rb_current_time());
726 client_p
->servptr
= &me
;
728 if(IsAnyDead(client_p
))
729 return CLIENT_EXITED
;
733 /* Update the capability combination usage counts */
734 set_chcap_usage_counts(client_p
);
736 rb_dlinkAdd(client_p
, &client_p
->lnode
, &me
.serv
->servers
);
737 rb_dlinkMoveNode(&client_p
->localClient
->tnode
, &unknown_list
, &serv_list
);
738 rb_dlinkAddTailAlloc(client_p
, &global_serv_list
);
741 add_to_id_hash(client_p
->id
, client_p
);
743 add_to_client_hash(client_p
->name
, client_p
);
744 /* doesnt duplicate client_p->serv if allocated this struct already */
745 make_server(client_p
);
747 client_p
->serv
->caps
= client_p
->localClient
->caps
;
749 if(client_p
->localClient
->fullcaps
)
751 client_p
->serv
->fullcaps
= rb_strdup(client_p
->localClient
->fullcaps
);
752 rb_free(client_p
->localClient
->fullcaps
);
753 client_p
->localClient
->fullcaps
= NULL
;
756 client_p
->serv
->nameinfo
= scache_connect(client_p
->name
, client_p
->info
, IsHidden(client_p
));
757 client_p
->localClient
->firsttime
= rb_current_time();
758 /* fixing eob timings.. -gnp */
760 if((rb_dlink_list_length(&lclient_list
) + rb_dlink_list_length(&serv_list
)) >
761 (unsigned long)MaxConnectionCount
)
762 MaxConnectionCount
= rb_dlink_list_length(&lclient_list
) +
763 rb_dlink_list_length(&serv_list
);
765 /* Show the real host/IP to admins */
766 sendto_realops_snomask(SNO_GENERAL
, L_ALL
,
767 "Link with %s established: (%s) link",
769 show_capabilities(client_p
));
771 ilog(L_SERVER
, "Link with %s established: (%s) link",
772 log_client_name(client_p
, SHOW_IP
), show_capabilities(client_p
));
775 hdata
.target
= client_p
;
776 call_hook(h_server_introduced
, &hdata
);
778 rb_snprintf(note
, sizeof(note
), "Server: %s", client_p
->name
);
779 rb_note(client_p
->localClient
->F
, note
);
782 ** Old sendto_serv_but_one() call removed because we now
783 ** need to send different names to different servers
784 ** (domain name matching) Send new server to other servers.
786 RB_DLINK_FOREACH(ptr
, serv_list
.head
)
788 target_p
= ptr
->data
;
790 if(target_p
== client_p
)
793 if(has_id(target_p
) && has_id(client_p
))
795 sendto_one(target_p
, ":%s SID %s 2 %s :%s%s",
796 me
.id
, client_p
->name
, client_p
->id
,
797 IsHidden(client_p
) ? "(H) " : "", client_p
->info
);
799 if(IsCapable(target_p
, CAP_ENCAP
) &&
800 !EmptyString(client_p
->serv
->fullcaps
))
801 sendto_one(target_p
, ":%s ENCAP * GCAP :%s",
802 client_p
->id
, client_p
->serv
->fullcaps
);
806 sendto_one(target_p
, ":%s SERVER %s 2 :%s%s",
807 me
.name
, client_p
->name
,
808 IsHidden(client_p
) ? "(H) " : "", client_p
->info
);
810 if(IsCapable(target_p
, CAP_ENCAP
) &&
811 !EmptyString(client_p
->serv
->fullcaps
))
812 sendto_one(target_p
, ":%s ENCAP * GCAP :%s",
813 client_p
->name
, client_p
->serv
->fullcaps
);
818 ** Pass on my client information to the new server
820 ** First, pass only servers (idea is that if the link gets
821 ** cancelled beacause the server was already there,
822 ** there are no NICK's to be cancelled...). Of course,
823 ** if cancellation occurs, all this info is sent anyway,
824 ** and I guess the link dies when a read is attempted...? --msa
826 ** Note: Link cancellation to occur at this point means
827 ** that at least two servers from my fragment are building
828 ** up connection this other fragment at the same time, it's
829 ** a race condition, not the normal way of operation...
831 ** ALSO NOTE: using the get_client_name for server names--
832 ** see previous *WARNING*!!! (Also, original inpath
835 RB_DLINK_FOREACH(ptr
, global_serv_list
.head
)
837 target_p
= ptr
->data
;
839 /* target_p->from == target_p for target_p == client_p */
840 if(IsMe(target_p
) || target_p
->from
== client_p
)
843 /* presumption, if target has an id, so does its uplink */
844 if(has_id(client_p
) && has_id(target_p
))
845 sendto_one(client_p
, ":%s SID %s %d %s :%s%s",
846 target_p
->servptr
->id
, target_p
->name
,
847 target_p
->hopcount
+ 1, target_p
->id
,
848 IsHidden(target_p
) ? "(H) " : "", target_p
->info
);
850 sendto_one(client_p
, ":%s SERVER %s %d :%s%s",
851 target_p
->servptr
->name
,
852 target_p
->name
, target_p
->hopcount
+ 1,
853 IsHidden(target_p
) ? "(H) " : "", target_p
->info
);
855 if(IsCapable(client_p
, CAP_ENCAP
) &&
856 !EmptyString(target_p
->serv
->fullcaps
))
857 sendto_one(client_p
, ":%s ENCAP * GCAP :%s",
858 get_id(target_p
, client_p
),
859 target_p
->serv
->fullcaps
);
864 /* Always send a PING after connect burst is done */
865 sendto_one(client_p
, "PING :%s", get_id(&me
, client_p
));
867 free_pre_client(client_p
);
869 send_pop_queue(client_p
);
875 * New server connection code
876 * Based upon the stuff floating about in s_bsd.c
881 serv_connect_resolved(struct Client
*client_p
)
883 struct rb_sockaddr_storage myipnum
;
884 char vhoststr
[HOSTIPLEN
];
885 struct server_conf
*server_p
;
888 if((server_p
= client_p
->localClient
->att_sconf
) == NULL
)
890 sendto_realops_snomask(SNO_GENERAL
, is_remote_connect(client_p
) ? L_NETWIDE
: L_ALL
, "Lost connect{} block for %s",
892 exit_client(client_p
, client_p
, &me
, "Lost connect{} block");
897 if(client_p
->localClient
->ip
.ss_family
== AF_INET6
)
898 port
= ntohs(((struct sockaddr_in6
*)&client_p
->localClient
->ip
)->sin6_port
);
901 port
= ntohs(((struct sockaddr_in
*)&client_p
->localClient
->ip
)->sin_port
);
903 if(ServerConfVhosted(server_p
))
905 memcpy(&myipnum
, &server_p
->my_ipnum
, sizeof(myipnum
));
906 ((struct sockaddr_in
*)&myipnum
)->sin_port
= 0;
907 myipnum
.ss_family
= server_p
->aftype
;
910 else if(server_p
->aftype
== AF_INET
&& ServerInfo
.specific_ipv4_vhost
)
912 memcpy(&myipnum
, &ServerInfo
.ip
, sizeof(myipnum
));
913 ((struct sockaddr_in
*)&myipnum
)->sin_port
= 0;
914 myipnum
.ss_family
= AF_INET
;
915 SET_SS_LEN(&myipnum
, sizeof(struct sockaddr_in
));
919 else if((server_p
->aftype
== AF_INET6
) && ServerInfo
.specific_ipv6_vhost
)
921 memcpy(&myipnum
, &ServerInfo
.ip6
, sizeof(myipnum
));
922 ((struct sockaddr_in6
*)&myipnum
)->sin6_port
= 0;
923 myipnum
.ss_family
= AF_INET6
;
924 SET_SS_LEN(&myipnum
, sizeof(struct sockaddr_in6
));
930 ilog(L_SERVER
, "Connecting to %s[%s] port %d (%s)", client_p
->name
, client_p
->sockhost
, port
,
932 server_p
->aftype
== AF_INET6
? "IPv6" :
934 (server_p
->aftype
== AF_INET
? "IPv4" : "?"));
936 if(ServerConfSSL(server_p
))
938 rb_connect_tcp(client_p
->localClient
->F
, (struct sockaddr
*)&client_p
->localClient
->ip
,
939 NULL
, 0, serv_connect_ssl_callback
,
940 client_p
, ConfigFileEntry
.connect_timeout
);
943 rb_connect_tcp(client_p
->localClient
->F
, (struct sockaddr
*)&client_p
->localClient
->ip
,
944 NULL
, 0, serv_connect_callback
,
945 client_p
, ConfigFileEntry
.connect_timeout
);
950 rb_inet_ntop_sock((struct sockaddr
*)&myipnum
, vhoststr
, sizeof vhoststr
);
951 ilog(L_SERVER
, "Connecting to %s[%s] port %d (%s) (vhost %s)", client_p
->name
, client_p
->sockhost
, port
,
953 server_p
->aftype
== AF_INET6
? "IPv6" :
955 (server_p
->aftype
== AF_INET
? "IPv4" : "?"), vhoststr
);
958 if(ServerConfSSL(server_p
))
959 rb_connect_tcp(client_p
->localClient
->F
, (struct sockaddr
*)&client_p
->localClient
->ip
,
960 (struct sockaddr
*) &myipnum
,
961 GET_SS_LEN(&myipnum
), serv_connect_ssl_callback
, client_p
,
962 ConfigFileEntry
.connect_timeout
);
964 rb_connect_tcp(client_p
->localClient
->F
, (struct sockaddr
*)&client_p
->localClient
->ip
,
965 (struct sockaddr
*) &myipnum
,
966 GET_SS_LEN(&myipnum
), serv_connect_callback
, client_p
,
967 ConfigFileEntry
.connect_timeout
);
973 serv_connect_dns_callback(void *vptr
, struct DNSReply
*reply
)
975 struct Client
*client_p
= vptr
;
978 rb_free(client_p
->localClient
->dnsquery
);
979 client_p
->localClient
->dnsquery
= NULL
;
983 sendto_realops_snomask(SNO_GENERAL
, is_remote_connect(client_p
) ? L_NETWIDE
: L_ALL
, "Cannot resolve hostname for %s",
985 ilog(L_SERVER
, "Cannot resolve hostname for %s",
986 log_client_name(client_p
, HIDE_IP
));
987 exit_client(client_p
, client_p
, &me
, "Cannot resolve hostname");
991 if(reply
->addr
.ss_family
== AF_INET6
)
992 port
= ((struct sockaddr_in6
*)&client_p
->localClient
->ip
)->sin6_port
;
995 port
= ((struct sockaddr_in
*)&client_p
->localClient
->ip
)->sin_port
;
996 memcpy(&client_p
->localClient
->ip
, &reply
->addr
, sizeof(client_p
->localClient
->ip
));
998 if(reply
->addr
.ss_family
== AF_INET6
)
999 ((struct sockaddr_in6
*)&client_p
->localClient
->ip
)->sin6_port
= port
;
1002 ((struct sockaddr_in
*)&client_p
->localClient
->ip
)->sin_port
= port
;
1003 /* Set sockhost properly now -- jilles */
1004 rb_inet_ntop_sock((struct sockaddr
*)&client_p
->localClient
->ip
,
1005 client_p
->sockhost
, sizeof client_p
->sockhost
);
1006 serv_connect_resolved(client_p
);
1010 * serv_connect() - initiate a server connection
1012 * inputs - pointer to conf
1013 * - pointer to client doing the connet
1017 * This code initiates a connection to a server. It first checks to make
1018 * sure the given server exists. If this is the case, it creates a socket,
1019 * creates a client, saves the socket information in the client, and
1020 * initiates a connection to the server through rb_connect_tcp(). The
1021 * completion of this goes through serv_completed_connection().
1023 * We return 1 if the connection is attempted, since we don't know whether
1024 * it suceeded or not, and 0 if it fails in here somewhere.
1027 serv_connect(struct server_conf
*server_p
, struct Client
*by
)
1029 struct Client
*client_p
;
1030 struct rb_sockaddr_storage theiripnum
;
1032 char note
[HOSTLEN
+ 10];
1034 s_assert(server_p
!= NULL
);
1035 if(server_p
== NULL
)
1039 * Make sure this server isn't already connected
1041 if((client_p
= find_server(NULL
, server_p
->name
)))
1043 sendto_realops_snomask(SNO_GENERAL
, L_ALL
,
1044 "Server %s already present from %s",
1045 server_p
->name
, client_p
->name
);
1046 if(by
&& IsPerson(by
) && !MyClient(by
))
1047 sendto_one_notice(by
, ":Server %s already present from %s",
1048 server_p
->name
, client_p
->name
);
1052 /* create a socket for the server connection */
1053 if((F
= rb_socket(server_p
->aftype
, SOCK_STREAM
, 0, NULL
)) == NULL
)
1055 ilog_error("opening a stream socket");
1059 rb_snprintf(note
, sizeof note
, "Server: %s", server_p
->name
);
1062 /* Create a local client */
1063 client_p
= make_client(NULL
);
1065 /* Copy in the server, hostname, fd
1066 * The sockhost may be a hostname, this will be corrected later
1069 rb_strlcpy(client_p
->name
, server_p
->name
, sizeof(client_p
->name
));
1070 rb_strlcpy(client_p
->host
, server_p
->host
, sizeof(client_p
->host
));
1071 rb_strlcpy(client_p
->sockhost
, server_p
->host
, sizeof(client_p
->sockhost
));
1072 client_p
->localClient
->F
= F
;
1073 add_to_cli_fd_hash(client_p
);
1076 * Set up the initial server evilness, ripped straight from
1077 * connect_server(), so don't blame me for it being evil.
1081 if(!rb_set_buffers(client_p
->localClient
->F
, READBUF_SIZE
))
1083 ilog_error("setting the buffer size for a server connection");
1087 * Attach config entries to client here rather than in
1088 * serv_connect_callback(). This to avoid null pointer references.
1090 attach_server_conf(client_p
, server_p
);
1093 * at this point we have a connection in progress and C/N lines
1094 * attached to the client, the socket info should be saved in the
1095 * client and it should either be resolved or have a valid address.
1097 * The socket has been connected or connect is in progress.
1099 make_server(client_p
);
1100 if(by
&& IsPerson(by
))
1102 strcpy(client_p
->serv
->by
, by
->name
);
1103 if(client_p
->serv
->user
)
1104 free_user(client_p
->serv
->user
, NULL
);
1105 client_p
->serv
->user
= by
->user
;
1110 strcpy(client_p
->serv
->by
, "AutoConn.");
1111 if(client_p
->serv
->user
)
1112 free_user(client_p
->serv
->user
, NULL
);
1113 client_p
->serv
->user
= NULL
;
1115 SetConnecting(client_p
);
1116 rb_dlinkAddTail(client_p
, &client_p
->node
, &global_client_list
);
1118 if (rb_inet_pton_sock(server_p
->host
, (struct sockaddr
*)&theiripnum
) > 0)
1120 memcpy(&client_p
->localClient
->ip
, &theiripnum
, sizeof(client_p
->localClient
->ip
));
1122 if(theiripnum
.ss_family
== AF_INET6
)
1123 ((struct sockaddr_in6
*)&client_p
->localClient
->ip
)->sin6_port
= htons(server_p
->port
);
1126 ((struct sockaddr_in
*)&client_p
->localClient
->ip
)->sin_port
= htons(server_p
->port
);
1128 return serv_connect_resolved(client_p
);
1133 if(theiripnum
.ss_family
== AF_INET6
)
1134 ((struct sockaddr_in6
*)&client_p
->localClient
->ip
)->sin6_port
= htons(server_p
->port
);
1137 ((struct sockaddr_in
*)&client_p
->localClient
->ip
)->sin_port
= htons(server_p
->port
);
1139 client_p
->localClient
->dnsquery
= rb_malloc(sizeof(struct DNSQuery
));
1140 client_p
->localClient
->dnsquery
->ptr
= client_p
;
1141 client_p
->localClient
->dnsquery
->callback
= serv_connect_dns_callback
;
1142 gethost_byname_type(server_p
->host
, client_p
->localClient
->dnsquery
,
1144 server_p
->aftype
== AF_INET6
? T_AAAA
:
1152 serv_connect_ssl_callback(rb_fde_t
*F
, int status
, void *data
)
1154 struct Client
*client_p
= data
;
1156 rb_connect_sockaddr(F
, (struct sockaddr
*)&client_p
->localClient
->ip
, sizeof(client_p
->localClient
->ip
));
1159 /* Print error message, just like non-SSL. */
1160 serv_connect_callback(F
, status
, data
);
1163 rb_socketpair(AF_UNIX
, SOCK_STREAM
, 0, &xF
[0], &xF
[1], "Outgoing ssld connection");
1164 del_from_cli_fd_hash(client_p
);
1165 client_p
->localClient
->F
= xF
[0];
1166 add_to_cli_fd_hash(client_p
);
1168 client_p
->localClient
->ssl_ctl
= start_ssld_connect(F
, xF
[1], rb_get_fd(xF
[0]));
1170 serv_connect_callback(client_p
->localClient
->F
, RB_OK
, client_p
);
1174 * serv_connect_callback() - complete a server connection.
1176 * This routine is called after the server connection attempt has
1177 * completed. If unsucessful, an error is sent to ops and the client
1178 * is closed. If sucessful, it goes through the initialisation/check
1179 * procedures, the capabilities are sent, and the socket is then
1180 * marked for reading.
1183 serv_connect_callback(rb_fde_t
*F
, int status
, void *data
)
1185 struct Client
*client_p
= data
;
1186 struct server_conf
*server_p
;
1189 /* First, make sure its a real client! */
1190 s_assert(client_p
!= NULL
);
1191 s_assert(client_p
->localClient
->F
== F
);
1193 if(client_p
== NULL
)
1196 /* while we were waiting for the callback, its possible this already
1199 if(find_server(NULL
, client_p
->name
) != NULL
)
1201 exit_client(client_p
, client_p
, &me
, "Server Exists");
1205 if(client_p
->localClient
->ssl_ctl
== NULL
)
1206 rb_connect_sockaddr(F
, (struct sockaddr
*)&client_p
->localClient
->ip
, sizeof(client_p
->localClient
->ip
));
1208 /* Check the status */
1211 /* COMM_ERR_TIMEOUT wont have an errno associated with it,
1212 * the others will.. --fl
1214 if(status
== RB_ERR_TIMEOUT
)
1216 sendto_realops_snomask(SNO_GENERAL
, is_remote_connect(client_p
) ? L_NETWIDE
: L_ALL
,
1217 "Error connecting to %s[%s]: %s",
1221 ilog(L_SERVER
, "Error connecting to %s[%s]: %s",
1222 client_p
->name
, client_p
->sockhost
,
1227 errstr
= strerror(rb_get_sockerr(F
));
1228 sendto_realops_snomask(SNO_GENERAL
, is_remote_connect(client_p
) ? L_NETWIDE
: L_ALL
,
1229 "Error connecting to %s[%s]: %s (%s)",
1232 rb_errstr(status
), errstr
);
1233 ilog(L_SERVER
, "Error connecting to %s[%s]: %s (%s)",
1234 client_p
->name
, client_p
->sockhost
,
1235 rb_errstr(status
), errstr
);
1238 exit_client(client_p
, client_p
, &me
, rb_errstr(status
));
1242 /* COMM_OK, so continue the connection procedure */
1243 /* Get the C/N lines */
1244 if((server_p
= client_p
->localClient
->att_sconf
) == NULL
)
1246 sendto_realops_snomask(SNO_GENERAL
, is_remote_connect(client_p
) ? L_NETWIDE
: L_ALL
, "Lost connect{} block for %s",
1248 exit_client(client_p
, client_p
, &me
, "Lost connect{} block");
1252 /* Next, send the initial handshake */
1253 SetHandshake(client_p
);
1255 /* kludge, if we're not using TS6, dont ever send
1256 * ourselves as being TS6 capable.
1258 if(!EmptyString(server_p
->spasswd
))
1260 sendto_one(client_p
, "PASS %s TS %d :%s",
1261 server_p
->spasswd
, TS_CURRENT
, me
.id
);
1264 /* pass my info to the new server */
1265 send_capabilities(client_p
, default_server_capabs
1266 | (ServerConfCompressed(server_p
) ? CAP_ZIP_SUPPORTED
: 0)
1267 | (ServerConfTb(server_p
) ? CAP_TB
: 0));
1269 sendto_one(client_p
, "SERVER %s 1 :%s%s",
1271 ConfigServerHide
.hidden
? "(H) " : "", me
.info
);
1274 * If we've been marked dead because a send failed, just exit
1275 * here now and save everyone the trouble of us ever existing.
1277 if(IsAnyDead(client_p
))
1279 sendto_realops_snomask(SNO_GENERAL
, is_remote_connect(client_p
) ? L_NETWIDE
: L_ALL
,
1280 "%s went dead during handshake", client_p
->name
);
1281 exit_client(client_p
, client_p
, &me
, "Went dead during handshake");
1285 /* don't move to serv_list yet -- we haven't sent a burst! */
1287 /* If we get here, we're ok, so lets start reading some data */
1288 read_packet(F
, client_p
);
1291 #ifndef HAVE_SOCKETPAIR
1293 inet_socketpair(int d
, int type
, int protocol
, int sv
[2])
1295 struct sockaddr_in addr1
, addr2
, addr3
;
1296 int addr3_len
= sizeof(addr3
);
1298 int port_no
= 20000;
1300 if(d
!= AF_INET
|| type
!= SOCK_STREAM
|| protocol
)
1302 errno
= EAFNOSUPPORT
;
1305 if(((sv
[0] = socket(AF_INET
, SOCK_STREAM
, 0)) < 0) || ((sv
[1] = socket(AF_INET
, SOCK_STREAM
, 0)) < 0))
1308 addr1
.sin_port
= htons(port_no
);
1309 addr1
.sin_family
= AF_INET
;
1310 addr1
.sin_addr
.s_addr
= htonl(INADDR_LOOPBACK
);
1311 while ((rc
= bind (sv
[0], (struct sockaddr
*) &addr1
, sizeof (addr1
))) < 0 && errno
== EADDRINUSE
)
1312 addr1
.sin_port
= htons(++port_no
);
1317 if(listen(sv
[0], 1) < 0)
1324 addr2
.sin_port
= htons(port_no
);
1325 addr2
.sin_family
= AF_INET
;
1326 addr2
.sin_addr
.s_addr
= htonl(INADDR_LOOPBACK
);
1327 if(connect (sv
[1], (struct sockaddr
*) &addr2
, sizeof (addr2
)) < 0)
1334 if((fd
= accept(sv
[1], (struct sockaddr
*) &addr3
, &addr3_len
)) < 0)