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 2723 2006-11-09 23:35:48Z jilles $
30 #include <openssl/rsa.h>
40 #include "irc_string.h"
41 #include "sprintf_irc.h"
43 #include "ircd_defs.h"
49 #include "s_newconf.h"
57 #include "channel.h" /* chcap_usage_counts stuff... */
64 #define INADDR_NONE ((unsigned int) 0xffffffff)
67 #ifndef HAVE_SOCKETPAIR
68 static int inet_socketpair(int d
, int type
, int protocol
, int sv
[2]);
71 int MaxConnectionCount
= 1;
72 int MaxClientCount
= 1;
73 int refresh_user_links
= 0;
75 static char buf
[BUFSIZE
];
77 static void start_io(struct Client
*server
);
79 static SlinkRplHnd slink_error
;
80 static SlinkRplHnd slink_zipstats
;
82 * list of recognized server capabilities. "TS" is not on the list
83 * because all servers that we talk to already do TS, and the kludged
84 * extra argument to "PASS" takes care of checking that. -orabidoo
86 struct Capability captab
[] = {
94 { "KNOCK", CAP_KNOCK
},
97 { "UNKLN", CAP_UNKLN
},
98 { "CLUSTER", CAP_CLUSTER
},
99 { "ENCAP", CAP_ENCAP
},
100 { "SERVICES", CAP_SERVICE
},
101 { "RSFNC", CAP_RSFNC
},
102 { "SAVE", CAP_SAVE
},
103 { "EUID", CAP_EUID
},
107 struct SlinkRplDef slinkrpltab
[] = {
108 {SLINKRPL_ERROR
, slink_error
, SLINKRPL_FLAG_DATA
},
109 {SLINKRPL_ZIPSTATS
, slink_zipstats
, SLINKRPL_FLAG_DATA
},
113 static int fork_server(struct Client
*client_p
);
115 static CNCB serv_connect_callback
;
118 slink_error(unsigned int rpl
, unsigned int len
, unsigned char *data
, struct Client
*server_p
)
120 char squitreason
[256];
122 s_assert(rpl
== SLINKRPL_ERROR
);
125 data
[len
- 1] = '\0';
127 sendto_realops_snomask(SNO_GENERAL
, L_ALL
, "SlinkError for %s: %s", server_p
->name
, data
);
128 snprintf(squitreason
, sizeof squitreason
, "servlink error: %s", data
);
129 exit_client(server_p
, server_p
, &me
, squitreason
);
133 slink_zipstats(unsigned int rpl
, unsigned int len
, unsigned char *data
, struct Client
*server_p
)
135 struct ZipStats zipstats
;
136 u_int32_t in
= 0, in_wire
= 0, out
= 0, out_wire
= 0;
139 s_assert(rpl
== SLINKRPL_ZIPSTATS
);
141 s_assert(IsCapable(server_p
, CAP_ZIP
));
143 /* Yes, it needs to be done this way, no we cannot let the compiler
144 * work with the pointer to the structure. This works around a GCC
145 * bug on SPARC that affects all versions at the time of this writing.
146 * I will feed you to the creatures living in RMS's beard if you do
147 * not leave this as is, without being sure that you are not causing
148 * regression for most of our installed SPARC base.
149 * -jmallett, 04/27/2002
151 memcpy(&zipstats
, &server_p
->localClient
->zipstats
, sizeof(struct ZipStats
));
153 in
|= (data
[i
++] << 24);
154 in
|= (data
[i
++] << 16);
155 in
|= (data
[i
++] << 8);
158 in_wire
|= (data
[i
++] << 24);
159 in_wire
|= (data
[i
++] << 16);
160 in_wire
|= (data
[i
++] << 8);
161 in_wire
|= (data
[i
++]);
163 out
|= (data
[i
++] << 24);
164 out
|= (data
[i
++] << 16);
165 out
|= (data
[i
++] << 8);
168 out_wire
|= (data
[i
++] << 24);
169 out_wire
|= (data
[i
++] << 16);
170 out_wire
|= (data
[i
++] << 8);
171 out_wire
|= (data
[i
++]);
174 zipstats
.inK
+= zipstats
.in
>> 10;
175 zipstats
.in
&= 0x03ff;
177 zipstats
.in_wire
+= in_wire
;
178 zipstats
.inK_wire
+= zipstats
.in_wire
>> 10;
179 zipstats
.in_wire
&= 0x03ff;
182 zipstats
.outK
+= zipstats
.out
>> 10;
183 zipstats
.out
&= 0x03ff;
185 zipstats
.out_wire
+= out_wire
;
186 zipstats
.outK_wire
+= zipstats
.out_wire
>> 10;
187 zipstats
.out_wire
&= 0x03ff;
191 (((double) (zipstats
.inK
- zipstats
.inK_wire
) /
192 (double) zipstats
.inK
) * 100.00);
194 zipstats
.in_ratio
= 0;
196 if(zipstats
.outK
> 0)
198 (((double) (zipstats
.outK
- zipstats
.outK_wire
) /
199 (double) zipstats
.outK
) * 100.00);
201 zipstats
.out_ratio
= 0;
203 memcpy(&server_p
->localClient
->zipstats
, &zipstats
, sizeof(struct ZipStats
));
207 collect_zipstats(void *unused
)
210 struct Client
*target_p
;
212 DLINK_FOREACH(ptr
, serv_list
.head
)
214 target_p
= ptr
->data
;
215 if(IsCapable(target_p
, CAP_ZIP
))
217 /* only bother if we haven't already got something queued... */
218 if(!target_p
->localClient
->slinkq
)
220 target_p
->localClient
->slinkq
= MyMalloc(1); /* sigh.. */
221 target_p
->localClient
->slinkq
[0] = SLINKCMD_ZIPSTATS
;
222 target_p
->localClient
->slinkq_ofs
= 0;
223 target_p
->localClient
->slinkq_len
= 1;
224 send_queued_slink_write(target_p
->localClient
->ctrlfd
, target_p
);
231 * hunt_server - Do the basic thing in delivering the message (command)
232 * across the relays to the specific server (server) for
235 * Note: The command is a format string and *MUST* be
236 * of prefixed style (e.g. ":%s COMMAND %s ...").
237 * Command can have only max 8 parameters.
239 * server parv[server] is the parameter identifying the
243 * parv[server] is replaced with the pointer to the
244 * real servername from the matched client (I'm lazy
247 * returns: (see #defines)
250 hunt_server(struct Client
*client_p
, struct Client
*source_p
,
251 const char *command
, int server
, int parc
, const char *parv
[])
253 struct Client
*target_p
;
260 * Assume it's me, if no server
262 if(parc
<= server
|| EmptyString(parv
[server
]) ||
263 match(me
.name
, parv
[server
]) || match(parv
[server
], me
.name
) ||
264 (strcmp(parv
[server
], me
.id
) == 0))
265 return (HUNTED_ISME
);
267 new = LOCAL_COPY(parv
[server
]);
270 * These are to pickup matches that would cause the following
271 * message to go in the wrong direction while doing quick fast
272 * non-matching lookups.
274 if(MyClient(source_p
))
275 target_p
= find_named_client(new);
277 target_p
= find_client(new);
280 if(target_p
->from
== source_p
->from
&& !MyConnect(target_p
))
283 if(target_p
== NULL
&& (target_p
= find_server(source_p
, new)))
284 if(target_p
->from
== source_p
->from
&& !MyConnect(target_p
))
288 wilds
= (strchr(new, '?') || strchr(new, '*'));
291 * Again, if there are no wild cards involved in the server
292 * name, use the hash lookup
298 if(MyClient(source_p
) || !IsDigit(parv
[server
][0]))
299 sendto_one_numeric(source_p
, ERR_NOSUCHSERVER
,
300 form_str(ERR_NOSUCHSERVER
),
302 return (HUNTED_NOSUCH
);
308 DLINK_FOREACH(ptr
, global_client_list
.head
)
310 if(match(new, ((struct Client
*) (ptr
->data
))->name
))
312 target_p
= ptr
->data
;
321 if(!IsRegistered(target_p
))
323 sendto_one_numeric(source_p
, ERR_NOSUCHSERVER
,
324 form_str(ERR_NOSUCHSERVER
),
326 return HUNTED_NOSUCH
;
329 if(IsMe(target_p
) || MyClient(target_p
))
333 parv
[server
] = get_id(target_p
, target_p
);
335 sendto_one(target_p
, command
, get_id(source_p
, target_p
),
336 parv
[1], parv
[2], parv
[3], parv
[4], parv
[5], parv
[6], parv
[7], parv
[8]);
338 return (HUNTED_PASS
);
341 if(!IsDigit(parv
[server
][0]))
342 sendto_one_numeric(source_p
, ERR_NOSUCHSERVER
,
343 form_str(ERR_NOSUCHSERVER
), parv
[server
]);
344 return (HUNTED_NOSUCH
);
348 * try_connections - scan through configuration and try new connections.
349 * Returns the calendar time when the next call to this
350 * function should be made latest. (No harm done if this
351 * is called earlier or later...)
354 try_connections(void *unused
)
356 struct Client
*client_p
;
357 struct server_conf
*server_p
= NULL
;
358 struct server_conf
*tmp_p
;
361 int connecting
= FALSE
;
365 DLINK_FOREACH(ptr
, server_conf_list
.head
)
369 if(ServerConfIllegal(tmp_p
) || !ServerConfAutoconn(tmp_p
))
372 cltmp
= tmp_p
->class;
375 * Skip this entry if the use of it is still on hold until
376 * future. Otherwise handle this entry (and set it on hold
377 * until next time). Will reset only hold times, if already
378 * made one successfull connection... [this algorithm is
379 * a bit fuzzy... -- msa >;) ]
381 if(tmp_p
->hold
> CurrentTime
)
383 if(next
> tmp_p
->hold
|| next
== 0)
388 confrq
= get_con_freq(cltmp
);
389 tmp_p
->hold
= CurrentTime
+ confrq
;
392 * Found a CONNECT config with port specified, scan clients
393 * and see if this server is already connected?
395 client_p
= find_server(NULL
, tmp_p
->name
);
397 if(!client_p
&& (CurrUsers(cltmp
) < MaxUsers(cltmp
)) && !connecting
)
401 /* We connect only one at time... */
405 if((next
> tmp_p
->hold
) || (next
== 0))
409 /* TODO: change this to set active flag to 0 when added to event! --Habeeb */
410 if(GlobalSetOptions
.autoconn
== 0)
416 /* move this connect entry to end.. */
417 dlinkDelete(&server_p
->node
, &server_conf_list
);
418 dlinkAddTail(server_p
, &server_p
->node
, &server_conf_list
);
421 * We used to only print this if serv_connect() actually
422 * suceeded, but since comm_tcp_connect() can call the callback
423 * immediately if there is an error, we were getting error messages
424 * in the wrong order. SO, we just print out the activated line,
425 * and let serv_connect() / serv_connect_callback() print an
426 * error afterwards if it fails.
429 #ifndef HIDE_SERVERS_IPS
430 sendto_realops_snomask(SNO_GENERAL
, L_ALL
,
431 "Connection to %s[%s] activated.",
432 server_p
->name
, server_p
->host
);
434 sendto_realops_snomask(SNO_GENERAL
, L_ALL
,
435 "Connection to %s activated",
439 serv_connect(server_p
, 0);
443 check_server(const char *name
, struct Client
*client_p
)
445 struct server_conf
*server_p
= NULL
;
446 struct server_conf
*tmp_p
;
450 s_assert(NULL
!= client_p
);
454 if(!(client_p
->localClient
->passwd
))
457 if(strlen(name
) > HOSTLEN
)
460 DLINK_FOREACH(ptr
, server_conf_list
.head
)
464 if(ServerConfIllegal(tmp_p
))
467 if(!match(tmp_p
->name
, name
))
472 /* XXX: Fix me for IPv6 */
473 /* XXX sockhost is the IPv4 ip as a string */
474 if(match(tmp_p
->host
, client_p
->host
) ||
475 match(tmp_p
->host
, client_p
->sockhost
))
479 if(ServerConfEncrypted(tmp_p
))
481 if(!strcmp(tmp_p
->passwd
, crypt(client_p
->localClient
->passwd
,
488 else if(!strcmp(tmp_p
->passwd
, client_p
->localClient
->passwd
))
499 attach_server_conf(client_p
, server_p
);
501 /* clear ZIP/TB if they support but we dont want them */
503 if(!ServerConfCompressed(server_p
))
505 ClearCap(client_p
, CAP_ZIP
);
507 if(!ServerConfTb(server_p
))
508 ClearCap(client_p
, CAP_TB
);
516 * inputs - Client pointer to send to
517 * - int flag of capabilities that this server has
519 * side effects - send the CAPAB line to a server -orabidoo
523 send_capabilities(struct Client
*client_p
, int cap_can_send
)
525 struct Capability
*cap
;
526 char msgbuf
[BUFSIZE
];
532 for (cap
= captab
; cap
->name
; ++cap
)
534 if(cap
->cap
& cap_can_send
)
536 tl
= ircsprintf(t
, "%s ", cap
->name
);
544 sendto_one(client_p
, "CAPAB :%s", msgbuf
);
549 * input - client to burst to, channel name, list to burst, mode flag
551 * side effects - client is sent a list of +b, or +e, or +I modes
554 burst_modes_TS5(struct Client
*client_p
, char *chname
, dlink_list
*list
, char flag
)
558 char mbuf
[MODEBUFLEN
];
567 mlen
= ircsprintf(buf
, ":%s MODE %s +", me
.name
, chname
);
573 DLINK_FOREACH(ptr
, list
->head
)
576 tlen
= strlen(banptr
->banstr
) + 3;
579 if(tlen
> MODEBUFLEN
)
582 if((count
>= MAXMODEPARAMS
) || ((cur_len
+ tlen
+ 2) > (BUFSIZE
- 3)))
584 sendto_one(client_p
, "%s%s %s", buf
, mbuf
, pbuf
);
594 pp
+= ircsprintf(pp
, "%s ", banptr
->banstr
);
600 sendto_one(client_p
, "%s%s %s", buf
, mbuf
, pbuf
);
605 * input - client to burst to, channel name, list to burst, mode flag
607 * side effects - client is sent a list of +b, +e, or +I modes
610 burst_modes_TS6(struct Client
*client_p
, struct Channel
*chptr
,
611 dlink_list
*list
, char flag
)
620 cur_len
= mlen
= ircsprintf(buf
, ":%s BMASK %ld %s %c :",
621 me
.id
, (long) chptr
->channelts
, chptr
->chname
, flag
);
624 DLINK_FOREACH(ptr
, list
->head
)
628 tlen
= strlen(banptr
->banstr
) + 1;
631 if(cur_len
+ tlen
> BUFSIZE
- 3)
633 /* the one we're trying to send doesnt fit at all! */
640 /* chop off trailing space and send.. */
642 sendto_one(client_p
, "%s", buf
);
647 ircsprintf(t
, "%s ", banptr
->banstr
);
652 /* cant ever exit the loop above without having modified buf,
653 * chop off trailing space and send.
656 sendto_one(client_p
, "%s", buf
);
662 * inputs - client (server) to send nick towards
663 * - client to send nick for
665 * side effects - NICK message is sent towards given client_p
668 burst_TS5(struct Client
*client_p
)
670 static char ubuf
[12];
671 struct Client
*target_p
;
672 struct Channel
*chptr
;
673 struct membership
*msptr
;
674 hook_data_client hclientinfo
;
675 hook_data_channel hchaninfo
;
682 hclientinfo
.client
= hchaninfo
.client
= client_p
;
684 DLINK_FOREACH(ptr
, global_client_list
.head
)
686 target_p
= ptr
->data
;
688 if(!IsPerson(target_p
))
691 send_umode(NULL
, target_p
, 0, 0, ubuf
);
698 sendto_one(client_p
, "NICK %s %d %ld %s %s %s %s :%s",
699 target_p
->name
, target_p
->hopcount
+ 1,
700 (long) target_p
->tsinfo
, ubuf
,
701 target_p
->username
, target_p
->host
,
702 target_p
->user
->server
, target_p
->info
);
704 if(IsDynSpoof(target_p
))
705 sendto_one(client_p
, ":%s ENCAP * REALHOST %s",
706 target_p
->name
, target_p
->orighost
);
707 if(!EmptyString(target_p
->user
->suser
))
708 sendto_one(client_p
, ":%s ENCAP * LOGIN %s",
709 target_p
->name
, target_p
->user
->suser
);
711 if(ConfigFileEntry
.burst_away
&& !EmptyString(target_p
->user
->away
))
712 sendto_one(client_p
, ":%s AWAY :%s",
713 target_p
->name
, target_p
->user
->away
);
715 hclientinfo
.target
= target_p
;
716 call_hook(h_burst_client
, &hclientinfo
);
719 DLINK_FOREACH(ptr
, global_channel_list
.head
)
723 if(*chptr
->chname
!= '#')
726 cur_len
= mlen
= ircsprintf(buf
, ":%s SJOIN %ld %s %s :", me
.name
,
727 (long) chptr
->channelts
, chptr
->chname
,
728 channel_modes(chptr
, client_p
));
732 DLINK_FOREACH(uptr
, chptr
->members
.head
)
736 tlen
= strlen(msptr
->client_p
->name
) + 1;
742 if(cur_len
+ tlen
>= BUFSIZE
- 3)
746 sendto_one(client_p
, "%s", buf
);
751 ircsprintf(t
, "%s%s ", find_channel_status(msptr
, 1),
752 msptr
->client_p
->name
);
758 if (dlink_list_length(&chptr
->members
) > 0)
760 /* remove trailing space */
764 sendto_one(client_p
, "%s", buf
);
766 burst_modes_TS5(client_p
, chptr
->chname
, &chptr
->banlist
, 'b');
768 if(IsCapable(client_p
, CAP_EX
))
769 burst_modes_TS5(client_p
, chptr
->chname
, &chptr
->exceptlist
, 'e');
771 if(IsCapable(client_p
, CAP_IE
))
772 burst_modes_TS5(client_p
, chptr
->chname
, &chptr
->invexlist
, 'I');
774 burst_modes_TS5(client_p
, chptr
->chname
, &chptr
->quietlist
, 'q');
776 if(IsCapable(client_p
, CAP_TB
) && chptr
->topic
!= NULL
)
777 sendto_one(client_p
, ":%s TB %s %ld %s%s:%s",
778 me
.name
, chptr
->chname
, (long) chptr
->topic_time
,
779 ConfigChannel
.burst_topicwho
? chptr
->topic_info
: "",
780 ConfigChannel
.burst_topicwho
? " " : "",
783 hchaninfo
.chptr
= chptr
;
784 call_hook(h_burst_channel
, &hchaninfo
);
787 hclientinfo
.target
= NULL
;
788 call_hook(h_burst_finished
, &hclientinfo
);
794 * inputs - client (server) to send nick towards
795 * - client to send nick for
797 * side effects - NICK message is sent towards given client_p
800 burst_TS6(struct Client
*client_p
)
802 static char ubuf
[12];
803 struct Client
*target_p
;
804 struct Channel
*chptr
;
805 struct membership
*msptr
;
806 hook_data_client hclientinfo
;
807 hook_data_channel hchaninfo
;
814 hclientinfo
.client
= hchaninfo
.client
= client_p
;
816 DLINK_FOREACH(ptr
, global_client_list
.head
)
818 target_p
= ptr
->data
;
820 if(!IsPerson(target_p
))
823 send_umode(NULL
, target_p
, 0, 0, ubuf
);
830 if(has_id(target_p
) && IsCapable(client_p
, CAP_EUID
))
831 sendto_one(client_p
, ":%s EUID %s %d %ld %s %s %s %s %s %s %s :%s",
832 target_p
->servptr
->id
, target_p
->name
,
833 target_p
->hopcount
+ 1,
834 (long) target_p
->tsinfo
, ubuf
,
835 target_p
->username
, target_p
->host
,
836 IsIPSpoof(target_p
) ? "0" : target_p
->sockhost
,
838 IsDynSpoof(target_p
) ? target_p
->orighost
: "*",
839 EmptyString(target_p
->user
->suser
) ? "*" : target_p
->user
->suser
,
841 else if(has_id(target_p
))
842 sendto_one(client_p
, ":%s UID %s %d %ld %s %s %s %s %s :%s",
843 target_p
->servptr
->id
, target_p
->name
,
844 target_p
->hopcount
+ 1,
845 (long) target_p
->tsinfo
, ubuf
,
846 target_p
->username
, target_p
->host
,
847 IsIPSpoof(target_p
) ? "0" : target_p
->sockhost
,
848 target_p
->id
, target_p
->info
);
850 sendto_one(client_p
, "NICK %s %d %ld %s %s %s %s :%s",
852 target_p
->hopcount
+ 1,
853 (long) target_p
->tsinfo
,
855 target_p
->username
, target_p
->host
,
856 target_p
->user
->server
, target_p
->info
);
858 if(!has_id(target_p
) || !IsCapable(client_p
, CAP_EUID
))
860 if(IsDynSpoof(target_p
))
861 sendto_one(client_p
, ":%s ENCAP * REALHOST %s",
862 use_id(target_p
), target_p
->orighost
);
863 if(!EmptyString(target_p
->user
->suser
))
864 sendto_one(client_p
, ":%s ENCAP * LOGIN %s",
865 use_id(target_p
), target_p
->user
->suser
);
868 if(ConfigFileEntry
.burst_away
&& !EmptyString(target_p
->user
->away
))
869 sendto_one(client_p
, ":%s AWAY :%s",
871 target_p
->user
->away
);
873 hclientinfo
.target
= target_p
;
874 call_hook(h_burst_client
, &hclientinfo
);
877 DLINK_FOREACH(ptr
, global_channel_list
.head
)
881 if(*chptr
->chname
!= '#')
884 cur_len
= mlen
= ircsprintf(buf
, ":%s SJOIN %ld %s %s :", me
.id
,
885 (long) chptr
->channelts
, chptr
->chname
,
886 channel_modes(chptr
, client_p
));
890 DLINK_FOREACH(uptr
, chptr
->members
.head
)
894 tlen
= strlen(use_id(msptr
->client_p
)) + 1;
900 if(cur_len
+ tlen
>= BUFSIZE
- 3)
903 sendto_one(client_p
, "%s", buf
);
908 ircsprintf(t
, "%s%s ", find_channel_status(msptr
, 1),
909 use_id(msptr
->client_p
));
915 if (dlink_list_length(&chptr
->members
) > 0)
917 /* remove trailing space */
920 sendto_one(client_p
, "%s", buf
);
922 if(dlink_list_length(&chptr
->banlist
) > 0)
923 burst_modes_TS6(client_p
, chptr
, &chptr
->banlist
, 'b');
925 if(IsCapable(client_p
, CAP_EX
) &&
926 dlink_list_length(&chptr
->exceptlist
) > 0)
927 burst_modes_TS6(client_p
, chptr
, &chptr
->exceptlist
, 'e');
929 if(IsCapable(client_p
, CAP_IE
) &&
930 dlink_list_length(&chptr
->invexlist
) > 0)
931 burst_modes_TS6(client_p
, chptr
, &chptr
->invexlist
, 'I');
933 if(dlink_list_length(&chptr
->quietlist
) > 0)
934 burst_modes_TS6(client_p
, chptr
, &chptr
->quietlist
, 'q');
936 if(IsCapable(client_p
, CAP_TB
) && chptr
->topic
!= NULL
)
937 sendto_one(client_p
, ":%s TB %s %ld %s%s:%s",
938 me
.id
, chptr
->chname
, (long) chptr
->topic_time
,
939 ConfigChannel
.burst_topicwho
? chptr
->topic_info
: "",
940 ConfigChannel
.burst_topicwho
? " " : "",
943 hchaninfo
.chptr
= chptr
;
944 call_hook(h_burst_channel
, &hchaninfo
);
947 hclientinfo
.target
= NULL
;
948 call_hook(h_burst_finished
, &hclientinfo
);
952 * show_capabilities - show current server capabilities
954 * inputs - pointer to an struct Client
955 * output - pointer to static string
956 * side effects - build up string representing capabilities of server listed
959 show_capabilities(struct Client
*target_p
)
961 static char msgbuf
[BUFSIZE
];
962 struct Capability
*cap
;
967 tl
= ircsprintf(msgbuf
, "TS ");
970 if(!IsServer(target_p
) || !target_p
->serv
->caps
) /* short circuit if no caps */
976 for (cap
= captab
; cap
->cap
; ++cap
)
978 if(cap
->cap
& target_p
->serv
->caps
)
980 tl
= ircsprintf(t
, "%s ", cap
->name
);
994 * inputs - pointer to a struct Client
999 server_estab(struct Client
*client_p
)
1001 struct Client
*target_p
;
1002 struct server_conf
*server_p
;
1003 hook_data_client hdata
;
1007 s_assert(NULL
!= client_p
);
1008 if(client_p
== NULL
)
1010 ClearAccess(client_p
);
1012 host
= client_p
->name
;
1014 if((server_p
= client_p
->localClient
->att_sconf
) == NULL
)
1016 /* This shouldn't happen, better tell the ops... -A1kmm */
1017 sendto_realops_snomask(SNO_GENERAL
, is_remote_connect(client_p
) ? L_NETWIDE
: L_ALL
,
1018 "Warning: Lost connect{} block for server %s!", host
);
1019 return exit_client(client_p
, client_p
, client_p
, "Lost connect{} block!");
1022 /* We shouldn't have to check this, it should already done before
1023 * server_estab is called. -A1kmm
1025 if(client_p
->localClient
->passwd
)
1027 memset(client_p
->localClient
->passwd
, 0, strlen(client_p
->localClient
->passwd
));
1028 MyFree(client_p
->localClient
->passwd
);
1029 client_p
->localClient
->passwd
= NULL
;
1032 /* Its got identd , since its a server */
1035 /* If there is something in the serv_list, it might be this
1036 * connecting server..
1038 if(!ServerInfo
.hub
&& serv_list
.head
)
1040 if(client_p
!= serv_list
.head
->data
|| serv_list
.head
->next
)
1042 ServerStats
->is_ref
++;
1043 sendto_one(client_p
, "ERROR :I'm a leaf not a hub");
1044 return exit_client(client_p
, client_p
, client_p
, "I'm a leaf");
1048 if(IsUnknown(client_p
))
1051 * jdc -- 1. Use EmptyString(), not [0] index reference.
1052 * 2. Check ->spasswd, not ->passwd.
1054 if(!EmptyString(server_p
->spasswd
))
1056 /* kludge, if we're not using TS6, dont ever send
1057 * ourselves as being TS6 capable.
1059 if(ServerInfo
.use_ts6
)
1060 sendto_one(client_p
, "PASS %s TS %d :%s",
1061 server_p
->spasswd
, TS_CURRENT
, me
.id
);
1063 sendto_one(client_p
, "PASS %s :TS",
1067 /* pass info to new server */
1068 send_capabilities(client_p
, default_server_capabs
1069 | (ServerConfCompressed(server_p
) ? CAP_ZIP_SUPPORTED
: 0)
1070 | (ServerConfTb(server_p
) ? CAP_TB
: 0));
1072 sendto_one(client_p
, "SERVER %s 1 :%s%s",
1074 ConfigServerHide
.hidden
? "(H) " : "",
1075 (me
.info
[0]) ? (me
.info
) : "IRCers United");
1078 if(!comm_set_buffers(client_p
->localClient
->fd
, READBUF_SIZE
))
1079 report_error(SETBUF_ERROR_MSG
,
1080 get_server_name(client_p
, SHOW_IP
),
1081 log_client_name(client_p
, SHOW_IP
), errno
);
1083 /* Hand the server off to servlink now */
1084 if(IsCapable(client_p
, CAP_ZIP
))
1086 if(fork_server(client_p
) < 0)
1088 sendto_realops_snomask(SNO_GENERAL
, is_remote_connect(client_p
) ? L_NETWIDE
: L_ALL
,
1089 "Warning: fork failed for server %s -- check servlink_path (%s)",
1090 get_server_name(client_p
, HIDE_IP
),
1091 ConfigFileEntry
.servlink_path
);
1092 return exit_client(client_p
, client_p
, client_p
, "Fork failed");
1095 SetServlink(client_p
);
1098 sendto_one(client_p
, "SVINFO %d %d 0 :%ld", TS_CURRENT
, TS_MIN
, CurrentTime
);
1100 client_p
->servptr
= &me
;
1102 if(IsAnyDead(client_p
))
1103 return CLIENT_EXITED
;
1105 SetServer(client_p
);
1107 /* Update the capability combination usage counts */
1108 set_chcap_usage_counts(client_p
);
1110 dlinkAdd(client_p
, &client_p
->lnode
, &me
.serv
->servers
);
1111 dlinkMoveNode(&client_p
->localClient
->tnode
, &unknown_list
, &serv_list
);
1112 dlinkAddTailAlloc(client_p
, &global_serv_list
);
1114 if(has_id(client_p
))
1115 add_to_id_hash(client_p
->id
, client_p
);
1117 add_to_client_hash(client_p
->name
, client_p
);
1118 /* doesnt duplicate client_p->serv if allocated this struct already */
1119 make_server(client_p
);
1120 client_p
->serv
->up
= me
.name
;
1121 client_p
->serv
->upid
= me
.id
;
1123 client_p
->serv
->caps
= client_p
->localClient
->caps
;
1125 if(client_p
->localClient
->fullcaps
)
1127 DupString(client_p
->serv
->fullcaps
, client_p
->localClient
->fullcaps
);
1128 MyFree(client_p
->localClient
->fullcaps
);
1129 client_p
->localClient
->fullcaps
= NULL
;
1132 /* add it to scache */
1133 find_or_add(client_p
->name
);
1134 client_p
->localClient
->firsttime
= CurrentTime
;
1135 /* fixing eob timings.. -gnp */
1137 /* Show the real host/IP to admins */
1138 sendto_realops_snomask(SNO_GENERAL
, L_ALL
,
1139 "Link with %s established: (%s) link",
1140 get_server_name(client_p
, SHOW_IP
),
1141 show_capabilities(client_p
));
1143 ilog(L_SERVER
, "Link with %s established: (%s) link",
1144 log_client_name(client_p
, SHOW_IP
), show_capabilities(client_p
));
1147 hdata
.target
= client_p
;
1148 call_hook(h_server_introduced
, &hdata
);
1150 if(HasServlink(client_p
))
1152 /* we won't overflow FD_DESC_SZ here, as it can hold
1153 * client_p->name + 64
1155 comm_note(client_p
->localClient
->fd
, "slink data: %s", client_p
->name
);
1156 comm_note(client_p
->localClient
->ctrlfd
, "slink ctrl: %s", client_p
->name
);
1159 comm_note(client_p
->localClient
->fd
, "Server: %s", client_p
->name
);
1162 ** Old sendto_serv_but_one() call removed because we now
1163 ** need to send different names to different servers
1164 ** (domain name matching) Send new server to other servers.
1166 DLINK_FOREACH(ptr
, serv_list
.head
)
1168 target_p
= ptr
->data
;
1170 if(target_p
== client_p
)
1173 if(has_id(target_p
) && has_id(client_p
))
1175 sendto_one(target_p
, ":%s SID %s 2 %s :%s%s",
1176 me
.id
, client_p
->name
, client_p
->id
,
1177 IsHidden(client_p
) ? "(H) " : "", client_p
->info
);
1179 if(IsCapable(target_p
, CAP_ENCAP
) &&
1180 !EmptyString(client_p
->serv
->fullcaps
))
1181 sendto_one(target_p
, ":%s ENCAP * GCAP :%s",
1182 client_p
->id
, client_p
->serv
->fullcaps
);
1186 sendto_one(target_p
, ":%s SERVER %s 2 :%s%s",
1187 me
.name
, client_p
->name
,
1188 IsHidden(client_p
) ? "(H) " : "", client_p
->info
);
1190 if(IsCapable(target_p
, CAP_ENCAP
) &&
1191 !EmptyString(client_p
->serv
->fullcaps
))
1192 sendto_one(target_p
, ":%s ENCAP * GCAP :%s",
1193 client_p
->name
, client_p
->serv
->fullcaps
);
1198 ** Pass on my client information to the new server
1200 ** First, pass only servers (idea is that if the link gets
1201 ** cancelled beacause the server was already there,
1202 ** there are no NICK's to be cancelled...). Of course,
1203 ** if cancellation occurs, all this info is sent anyway,
1204 ** and I guess the link dies when a read is attempted...? --msa
1206 ** Note: Link cancellation to occur at this point means
1207 ** that at least two servers from my fragment are building
1208 ** up connection this other fragment at the same time, it's
1209 ** a race condition, not the normal way of operation...
1211 ** ALSO NOTE: using the get_client_name for server names--
1212 ** see previous *WARNING*!!! (Also, original inpath
1215 DLINK_FOREACH(ptr
, global_serv_list
.head
)
1217 target_p
= ptr
->data
;
1219 /* target_p->from == target_p for target_p == client_p */
1220 if(IsMe(target_p
) || target_p
->from
== client_p
)
1223 /* presumption, if target has an id, so does its uplink */
1224 if(has_id(client_p
) && has_id(target_p
))
1225 sendto_one(client_p
, ":%s SID %s %d %s :%s%s",
1226 target_p
->serv
->upid
, target_p
->name
,
1227 target_p
->hopcount
+ 1, target_p
->id
,
1228 IsHidden(target_p
) ? "(H) " : "", target_p
->info
);
1230 sendto_one(client_p
, ":%s SERVER %s %d :%s%s",
1232 target_p
->name
, target_p
->hopcount
+ 1,
1233 IsHidden(target_p
) ? "(H) " : "", target_p
->info
);
1235 if(IsCapable(client_p
, CAP_ENCAP
) &&
1236 !EmptyString(target_p
->serv
->fullcaps
))
1237 sendto_one(client_p
, ":%s ENCAP * GCAP :%s",
1238 get_id(target_p
, client_p
),
1239 target_p
->serv
->fullcaps
);
1242 if(has_id(client_p
))
1243 burst_TS6(client_p
);
1245 burst_TS5(client_p
);
1247 /* Always send a PING after connect burst is done */
1248 sendto_one(client_p
, "PING :%s", get_id(&me
, client_p
));
1250 free_pre_client(client_p
);
1256 start_io(struct Client
*server
)
1258 unsigned char *iobuf
;
1263 iobuf
= MyMalloc(256); /* XXX: This seems arbitrary. Perhaps make it IRCD_BUFSIZE? --nenolod */
1265 if(IsCapable(server
, CAP_ZIP
))
1268 iobuf
[c
++] = SLINKCMD_SET_ZIP_OUT_LEVEL
;
1269 iobuf
[c
++] = 0; /* | */
1270 iobuf
[c
++] = 1; /* \ len is 1 */
1271 iobuf
[c
++] = ConfigFileEntry
.compression_level
;
1272 iobuf
[c
++] = SLINKCMD_START_ZIP_IN
;
1273 iobuf
[c
++] = SLINKCMD_START_ZIP_OUT
;
1276 while (MyConnect(server
))
1280 iobuf
= MyRealloc(iobuf
, (c
+ READBUF_SIZE
+ 64));
1282 /* store data in c+3 to allow for SLINKCMD_INJECT_RECVQ and len u16 */
1283 linelen
= linebuf_get(&server
->localClient
->buf_recvq
, (char *) (iobuf
+ c
+ 3), READBUF_SIZE
, LINEBUF_PARTIAL
, LINEBUF_RAW
); /* include partial lines */
1287 iobuf
[c
++] = SLINKCMD_INJECT_RECVQ
;
1288 iobuf
[c
++] = (linelen
>> 8);
1289 iobuf
[c
++] = (linelen
& 0xff);
1296 while (MyConnect(server
))
1300 iobuf
= MyRealloc(iobuf
, (c
+ BUF_DATA_SIZE
+ 64));
1302 /* store data in c+3 to allow for SLINKCMD_INJECT_RECVQ and len u16 */
1303 linelen
= linebuf_get(&server
->localClient
->buf_sendq
,
1304 (char *) (iobuf
+ c
+ 3), READBUF_SIZE
,
1305 LINEBUF_PARTIAL
, LINEBUF_PARSED
); /* include partial lines */
1309 iobuf
[c
++] = SLINKCMD_INJECT_SENDQ
;
1310 iobuf
[c
++] = (linelen
>> 8);
1311 iobuf
[c
++] = (linelen
& 0xff);
1319 iobuf
[c
++] = SLINKCMD_INIT
;
1321 server
->localClient
->slinkq
= iobuf
;
1322 server
->localClient
->slinkq_ofs
= 0;
1323 server
->localClient
->slinkq_len
= c
;
1325 /* schedule a write */
1326 send_queued_slink_write(server
->localClient
->ctrlfd
, server
);
1332 * inputs - struct Client *server
1333 * output - success: 0 / failure: -1
1334 * side effect - fork, and exec SERVLINK to handle this connection
1337 fork_server(struct Client
*server
)
1346 char slink
[] = "-slink";
1350 #ifdef HAVE_SOCKETPAIR
1351 if(socketpair(AF_UNIX
, SOCK_STREAM
, 0, ctrl_fds
) < 0)
1353 if(inet_socketpair(AF_INET
,SOCK_STREAM
, 0, ctrl_fds
) < 0)
1360 #ifdef HAVE_SOCKETPAIR
1361 if(socketpair(AF_UNIX
, SOCK_STREAM
, 0, data_fds
) < 0)
1363 if(inet_socketpair(AF_INET
,SOCK_STREAM
, 0, data_fds
) < 0)
1369 if((ret
= vfork()) < 0)
1371 if((ret
= fork()) < 0)
1376 /* set our fds as non blocking and close everything else */
1377 for (i
= 0; i
< HARD_FDLIMIT
; i
++)
1381 if((i
== ctrl_fds
[1]) || (i
== data_fds
[1]) || (i
== server
->localClient
->fd
))
1388 if(i
> 2) /* don't close std* */
1394 ircsnprintf(fd_str
[0], sizeof(fd_str
[0]), "%d", ctrl_fds
[1]);
1395 ircsnprintf(fd_str
[1], sizeof(fd_str
[1]), "%d", data_fds
[1]);
1396 ircsnprintf(fd_str
[2], sizeof(fd_str
[2]), "%d", server
->localClient
->fd
);
1397 kid_argv
[0] = slink
;
1398 kid_argv
[1] = fd_str
[0];
1399 kid_argv
[2] = fd_str
[1];
1400 kid_argv
[3] = fd_str
[2];
1403 /* exec servlink program */
1404 execv(ConfigFileEntry
.servlink_path
, kid_argv
);
1406 /* We're still here, abort. */
1411 comm_close(server
->localClient
->fd
);
1413 /* close the childs end of the pipes */
1417 s_assert(server
->localClient
);
1418 server
->localClient
->ctrlfd
= ctrl_fds
[0];
1419 server
->localClient
->fd
= data_fds
[0];
1421 if(!comm_set_nb(server
->localClient
->fd
))
1423 report_error(NONB_ERROR_MSG
,
1424 get_server_name(server
, SHOW_IP
),
1425 log_client_name(server
, SHOW_IP
),
1429 if(!comm_set_nb(server
->localClient
->ctrlfd
))
1431 report_error(NONB_ERROR_MSG
,
1432 get_server_name(server
, SHOW_IP
),
1433 log_client_name(server
, SHOW_IP
),
1437 comm_open(server
->localClient
->ctrlfd
, FD_SOCKET
, NULL
);
1438 comm_open(server
->localClient
->fd
, FD_SOCKET
, NULL
);
1440 read_ctrl_packet(server
->localClient
->ctrlfd
, server
);
1441 read_packet(server
->localClient
->fd
, server
);
1447 /* this is ugly, but nicer than repeating
1448 * about 50 close() statements everywhre... */
1457 * New server connection code
1458 * Based upon the stuff floating about in s_bsd.c
1463 * serv_connect() - initiate a server connection
1465 * inputs - pointer to conf
1466 * - pointer to client doing the connet
1470 * This code initiates a connection to a server. It first checks to make
1471 * sure the given server exists. If this is the case, it creates a socket,
1472 * creates a client, saves the socket information in the client, and
1473 * initiates a connection to the server through comm_connect_tcp(). The
1474 * completion of this goes through serv_completed_connection().
1476 * We return 1 if the connection is attempted, since we don't know whether
1477 * it suceeded or not, and 0 if it fails in here somewhere.
1480 serv_connect(struct server_conf
*server_p
, struct Client
*by
)
1482 struct Client
*client_p
;
1483 struct irc_sockaddr_storage myipnum
;
1486 s_assert(server_p
!= NULL
);
1487 if(server_p
== NULL
)
1491 * Make sure this server isn't already connected
1493 if((client_p
= find_server(NULL
, server_p
->name
)))
1495 sendto_realops_snomask(SNO_GENERAL
, L_ALL
,
1496 "Server %s already present from %s",
1497 server_p
->name
, get_server_name(client_p
, SHOW_IP
));
1498 if(by
&& IsPerson(by
) && !MyClient(by
))
1499 sendto_one_notice(by
, ":Server %s already present from %s",
1500 server_p
->name
, get_server_name(client_p
, SHOW_IP
));
1504 /* create a socket for the server connection */
1505 if((fd
= comm_socket(server_p
->aftype
, SOCK_STREAM
, 0, NULL
)) < 0)
1507 /* Eek, failure to create the socket */
1508 report_error("opening stream socket to %s: %s",
1509 server_p
->name
, server_p
->name
, errno
);
1513 /* servernames are always guaranteed under HOSTLEN chars */
1514 comm_note(fd
, "Server: %s", server_p
->name
);
1516 /* Create a local client */
1517 client_p
= make_client(NULL
);
1519 /* Copy in the server, hostname, fd
1520 * The sockhost may be a hostname, this will be corrected later
1523 strlcpy(client_p
->name
, server_p
->name
, sizeof(client_p
->name
));
1524 strlcpy(client_p
->host
, server_p
->host
, sizeof(client_p
->host
));
1525 strlcpy(client_p
->sockhost
, server_p
->host
, sizeof(client_p
->sockhost
));
1526 client_p
->localClient
->fd
= fd
;
1529 * Set up the initial server evilness, ripped straight from
1530 * connect_server(), so don't blame me for it being evil.
1534 if(!comm_set_buffers(client_p
->localClient
->fd
, READBUF_SIZE
))
1536 report_error(SETBUF_ERROR_MSG
,
1537 get_server_name(client_p
, SHOW_IP
),
1538 log_client_name(client_p
, SHOW_IP
),
1543 * Attach config entries to client here rather than in
1544 * serv_connect_callback(). This to avoid null pointer references.
1546 attach_server_conf(client_p
, server_p
);
1549 * at this point we have a connection in progress and C/N lines
1550 * attached to the client, the socket info should be saved in the
1551 * client and it should either be resolved or have a valid address.
1553 * The socket has been connected or connect is in progress.
1555 make_server(client_p
);
1556 if(by
&& IsPerson(by
))
1558 strcpy(client_p
->serv
->by
, by
->name
);
1559 if(client_p
->serv
->user
)
1560 free_user(client_p
->serv
->user
, NULL
);
1561 client_p
->serv
->user
= by
->user
;
1566 strcpy(client_p
->serv
->by
, "AutoConn.");
1567 if(client_p
->serv
->user
)
1568 free_user(client_p
->serv
->user
, NULL
);
1569 client_p
->serv
->user
= NULL
;
1571 client_p
->serv
->up
= me
.name
;
1572 client_p
->serv
->upid
= me
.id
;
1573 SetConnecting(client_p
);
1574 dlinkAddTail(client_p
, &client_p
->node
, &global_client_list
);
1577 ilog(L_SERVER
, "Connecting to %s[%s] port %d (%s)", server_p
->name
, server_p
->host
, server_p
->port
,
1579 server_p
->aftype
== AF_INET6
? "IPv6" :
1581 (server_p
->aftype
== AF_INET
? "IPv4" : "?"));
1583 if(ServerConfVhosted(server_p
))
1585 memcpy(&myipnum
, &server_p
->my_ipnum
, sizeof(myipnum
));
1586 ((struct sockaddr_in
*)&myipnum
)->sin_port
= 0;
1587 myipnum
.ss_family
= server_p
->aftype
;
1590 else if(server_p
->aftype
== AF_INET
&& ServerInfo
.specific_ipv4_vhost
)
1592 memcpy(&myipnum
, &ServerInfo
.ip
, sizeof(myipnum
));
1593 ((struct sockaddr_in
*)&myipnum
)->sin_port
= 0;
1594 myipnum
.ss_family
= AF_INET
;
1595 SET_SS_LEN(myipnum
, sizeof(struct sockaddr_in
));
1599 else if((server_p
->aftype
== AF_INET6
) && ServerInfo
.specific_ipv6_vhost
)
1601 memcpy(&myipnum
, &ServerInfo
.ip6
, sizeof(myipnum
));
1602 ((struct sockaddr_in6
*)&myipnum
)->sin6_port
= 0;
1603 myipnum
.ss_family
= AF_INET6
;
1604 SET_SS_LEN(myipnum
, sizeof(struct sockaddr_in6
));
1609 comm_connect_tcp(client_p
->localClient
->fd
, server_p
->host
,
1610 server_p
->port
, NULL
, 0, serv_connect_callback
,
1611 client_p
, server_p
->aftype
,
1612 ConfigFileEntry
.connect_timeout
);
1616 comm_connect_tcp(client_p
->localClient
->fd
, server_p
->host
,
1617 server_p
->port
, (struct sockaddr
*) &myipnum
,
1618 GET_SS_LEN(myipnum
), serv_connect_callback
, client_p
,
1619 myipnum
.ss_family
, ConfigFileEntry
.connect_timeout
);
1625 * serv_connect_callback() - complete a server connection.
1627 * This routine is called after the server connection attempt has
1628 * completed. If unsucessful, an error is sent to ops and the client
1629 * is closed. If sucessful, it goes through the initialisation/check
1630 * procedures, the capabilities are sent, and the socket is then
1631 * marked for reading.
1634 serv_connect_callback(int fd
, int status
, void *data
)
1636 struct Client
*client_p
= data
;
1637 struct server_conf
*server_p
;
1640 /* First, make sure its a real client! */
1641 s_assert(client_p
!= NULL
);
1642 s_assert(client_p
->localClient
->fd
== fd
);
1644 if(client_p
== NULL
)
1647 /* while we were waiting for the callback, its possible this already
1650 if(find_server(NULL
, client_p
->name
) != NULL
)
1652 exit_client(client_p
, client_p
, &me
, "Server Exists");
1656 /* Next, for backward purposes, record the ip of the server */
1657 memcpy(&client_p
->localClient
->ip
, &fd_table
[fd
].connect
.hostaddr
, sizeof client_p
->localClient
->ip
);
1658 /* Set sockhost properly now -- jilles */
1659 inetntop_sock((struct sockaddr
*)&fd_table
[fd
].connect
.hostaddr
,
1660 client_p
->sockhost
, sizeof client_p
->sockhost
);
1662 /* Check the status */
1663 if(status
!= COMM_OK
)
1665 /* COMM_ERR_TIMEOUT wont have an errno associated with it,
1666 * the others will.. --fl
1668 if(status
== COMM_ERR_TIMEOUT
)
1670 sendto_realops_snomask(SNO_GENERAL
, is_remote_connect(client_p
) ? L_NETWIDE
: L_ALL
,
1671 "Error connecting to %s[%s]: %s",
1673 #ifdef HIDE_SERVERS_IPS
1678 comm_errstr(status
));
1679 ilog(L_SERVER
, "Error connecting to %s[%s]: %s",
1680 client_p
->name
, client_p
->sockhost
,
1681 comm_errstr(status
));
1685 errstr
= strerror(comm_get_sockerr(fd
));
1686 sendto_realops_snomask(SNO_GENERAL
, is_remote_connect(client_p
) ? L_NETWIDE
: L_ALL
,
1687 "Error connecting to %s[%s]: %s (%s)",
1689 #ifdef HIDE_SERVERS_IPS
1694 comm_errstr(status
), errstr
);
1695 ilog(L_SERVER
, "Error connecting to %s[%s]: %s (%s)",
1696 client_p
->name
, client_p
->sockhost
,
1697 comm_errstr(status
), errstr
);
1700 exit_client(client_p
, client_p
, &me
, comm_errstr(status
));
1704 /* COMM_OK, so continue the connection procedure */
1705 /* Get the C/N lines */
1706 if((server_p
= client_p
->localClient
->att_sconf
) == NULL
)
1708 sendto_realops_snomask(SNO_GENERAL
, is_remote_connect(client_p
) ? L_NETWIDE
: L_ALL
, "Lost connect{} block for %s",
1709 get_server_name(client_p
, HIDE_IP
));
1710 exit_client(client_p
, client_p
, &me
, "Lost connect{} block");
1714 /* Next, send the initial handshake */
1715 SetHandshake(client_p
);
1717 /* kludge, if we're not using TS6, dont ever send
1718 * ourselves as being TS6 capable.
1720 if(!EmptyString(server_p
->spasswd
))
1722 if(ServerInfo
.use_ts6
)
1723 sendto_one(client_p
, "PASS %s TS %d :%s",
1724 server_p
->spasswd
, TS_CURRENT
, me
.id
);
1726 sendto_one(client_p
, "PASS %s :TS",
1730 /* pass my info to the new server */
1731 send_capabilities(client_p
, default_server_capabs
1732 | (ServerConfCompressed(server_p
) ? CAP_ZIP_SUPPORTED
: 0)
1733 | (ServerConfTb(server_p
) ? CAP_TB
: 0));
1735 sendto_one(client_p
, "SERVER %s 1 :%s%s",
1737 ConfigServerHide
.hidden
? "(H) " : "", me
.info
);
1740 * If we've been marked dead because a send failed, just exit
1741 * here now and save everyone the trouble of us ever existing.
1743 if(IsAnyDead(client_p
))
1745 sendto_realops_snomask(SNO_GENERAL
, is_remote_connect(client_p
) ? L_NETWIDE
: L_ALL
,
1746 "%s went dead during handshake", client_p
->name
);
1747 exit_client(client_p
, client_p
, &me
, "Went dead during handshake");
1751 /* don't move to serv_list yet -- we haven't sent a burst! */
1753 /* If we get here, we're ok, so lets start reading some data */
1754 read_packet(fd
, client_p
);
1757 #ifndef HAVE_SOCKETPAIR
1759 inet_socketpair(int d
, int type
, int protocol
, int sv
[2])
1761 struct sockaddr_in addr1
, addr2
, addr3
;
1762 int addr3_len
= sizeof(addr3
);
1764 int port_no
= 20000;
1766 if(d
!= AF_INET
|| type
!= SOCK_STREAM
|| protocol
)
1768 errno
= EAFNOSUPPORT
;
1771 if(((sv
[0] = socket(AF_INET
, SOCK_STREAM
, 0)) < 0) || ((sv
[1] = socket(AF_INET
, SOCK_STREAM
, 0)) < 0))
1774 addr1
.sin_port
= htons(port_no
);
1775 addr1
.sin_family
= AF_INET
;
1776 addr1
.sin_addr
.s_addr
= htonl(INADDR_LOOPBACK
);
1777 while ((rc
= bind (sv
[0], (struct sockaddr
*) &addr1
, sizeof (addr1
))) < 0 && errno
== EADDRINUSE
)
1778 addr1
.sin_port
= htons(++port_no
);
1783 if(listen(sv
[0], 1) < 0)
1790 addr2
.sin_port
= htons(port_no
);
1791 addr2
.sin_family
= AF_INET
;
1792 addr2
.sin_addr
.s_addr
= htonl(INADDR_LOOPBACK
);
1793 if(connect (sv
[1], (struct sockaddr
*) &addr2
, sizeof (addr2
)) < 0)
1800 if((fd
= accept(sv
[1], (struct sockaddr
*) &addr3
, &addr3_len
)) < 0)