2 * charybdis: an advanced ircd.
3 * client.c: Controls clients.
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
8 * Copyright (C) 2007 William Pitcock
10 * This program is free software; you can redistribute it and/or modify
11 * it under the terms of the GNU General Public License as published by
12 * the Free Software Foundation; either version 2 of the License, or
13 * (at your option) any later version.
15 * This program is distributed in the hope that it will be useful,
16 * but WITHOUT ANY WARRANTY; without even the implied warranty of
17 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
18 * GNU General Public License for more details.
20 * You should have received a copy of the GNU General Public License
21 * along with this program; if not, write to the Free Software
22 * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307
37 #include "s_newconf.h"
52 #include "rb_dictionary.h"
57 #define DEBUG_EXITED_CLIENTS
59 static void check_pings_list(rb_dlink_list
* list
);
60 static void check_unknowns_list(rb_dlink_list
* list
);
61 static void free_exited_clients(void *unused
);
62 static void exit_aborted_clients(void *unused
);
64 static int exit_remote_client(struct Client
*, struct Client
*, struct Client
*,const char *);
65 static int exit_remote_server(struct Client
*, struct Client
*, struct Client
*,const char *);
66 static int exit_local_client(struct Client
*, struct Client
*, struct Client
*,const char *);
67 static int exit_unknown_client(struct Client
*, struct Client
*, struct Client
*,const char *);
68 static int exit_local_server(struct Client
*, struct Client
*, struct Client
*,const char *);
69 static int qs_server(struct Client
*, struct Client
*, struct Client
*, const char *comment
);
71 static EVH check_pings
;
73 static rb_bh
*client_heap
= NULL
;
74 static rb_bh
*lclient_heap
= NULL
;
75 static rb_bh
*pclient_heap
= NULL
;
76 static rb_bh
*user_heap
= NULL
;
77 static rb_bh
*away_heap
= NULL
;
78 static char current_uid
[IDLEN
];
79 static uint32_t current_connid
= 0;
81 rb_dictionary
*nd_dict
= NULL
;
83 rb_dlink_list dead_list
;
84 #ifdef DEBUG_EXITED_CLIENTS
85 static rb_dlink_list dead_remote_list
;
91 struct Client
*client
;
92 char notice
[REASONLEN
];
95 static rb_dlink_list abort_list
;
103 * side effects - initialize client free memory
109 * start off the check ping event .. -- adrian
110 * Every 30 seconds is plenty -- db
112 client_heap
= rb_bh_create(sizeof(struct Client
), CLIENT_HEAP_SIZE
, "client_heap");
113 lclient_heap
= rb_bh_create(sizeof(struct LocalUser
), LCLIENT_HEAP_SIZE
, "lclient_heap");
114 pclient_heap
= rb_bh_create(sizeof(struct PreClient
), PCLIENT_HEAP_SIZE
, "pclient_heap");
115 user_heap
= rb_bh_create(sizeof(struct User
), USER_HEAP_SIZE
, "user_heap");
116 away_heap
= rb_bh_create(AWAYLEN
, AWAY_HEAP_SIZE
, "away_heap");
118 rb_event_addish("check_pings", check_pings
, NULL
, 30);
119 rb_event_addish("free_exited_clients", &free_exited_clients
, NULL
, 4);
120 rb_event_addish("exit_aborted_clients", exit_aborted_clients
, NULL
, 1);
121 rb_event_add("flood_recalc", flood_recalc
, NULL
, 1);
123 nd_dict
= rb_dictionary_create("nickdelay", irccmp
);
127 * connid_get - allocate a connid
130 * outputs - a connid token which is used to represent a logical circuit
131 * side effects - current_connid is incremented, possibly multiple times.
132 * the association of the connid to it's client is committed.
135 connid_get(struct Client
*client_p
)
137 s_assert(MyConnect(client_p
));
138 if (!MyConnect(client_p
))
141 /* find a connid that is available */
142 while (find_cli_connid_hash(++current_connid
) != NULL
)
144 /* handle wraparound, current_connid must NEVER be 0 */
145 if (current_connid
== 0)
149 add_to_cli_connid_hash(client_p
, current_connid
);
150 rb_dlinkAddAlloc(RB_UINT_TO_POINTER(current_connid
), &client_p
->localClient
->connids
);
152 return current_connid
;
156 * connid_put - free a connid
158 * inputs - connid to free
160 * side effects - connid bookkeeping structures are freed
163 connid_put(uint32_t id
)
165 struct Client
*client_p
;
171 client_p
= find_cli_connid_hash(id
);
172 if (client_p
== NULL
)
175 del_from_cli_connid_hash(id
);
176 rb_dlinkFindDestroy(RB_UINT_TO_POINTER(id
), &client_p
->localClient
->connids
);
180 * client_release_connids - release any connids still attached to a client
182 * inputs - client to garbage collect
184 * side effects - client's connids are garbage collected
187 client_release_connids(struct Client
*client_p
)
189 rb_dlink_node
*ptr
, *ptr2
;
191 if (client_p
->localClient
->connids
.head
)
192 s_assert(MyConnect(client_p
));
194 if (!MyConnect(client_p
))
197 RB_DLINK_FOREACH_SAFE(ptr
, ptr2
, client_p
->localClient
->connids
.head
)
198 connid_put(RB_POINTER_TO_UINT(ptr
->data
));
202 * make_client - create a new Client struct and set it to initial state.
204 * from == NULL, create local client (a client connected
207 * from, create remote client (behind a socket
208 * associated with the client defined by
209 * 'from'). ('from' is a local client!!).
212 make_client(struct Client
*from
)
214 struct Client
*client_p
= NULL
;
215 struct LocalUser
*localClient
;
217 client_p
= rb_bh_alloc(client_heap
);
221 client_p
->from
= client_p
; /* 'from' of local client is self! */
223 localClient
= rb_bh_alloc(lclient_heap
);
224 SetMyConnect(client_p
);
225 client_p
->localClient
= localClient
;
227 client_p
->localClient
->lasttime
= client_p
->localClient
->firsttime
= rb_current_time();
229 client_p
->localClient
->F
= NULL
;
231 client_p
->preClient
= rb_bh_alloc(pclient_heap
);
233 /* as good a place as any... */
234 rb_dlinkAdd(client_p
, &client_p
->localClient
->tnode
, &unknown_list
);
237 { /* from is not NULL */
238 client_p
->localClient
= NULL
;
239 client_p
->preClient
= NULL
;
240 client_p
->from
= from
; /* 'from' of local client is self! */
243 SetUnknown(client_p
);
244 rb_strlcpy(client_p
->username
, "unknown", sizeof(client_p
->username
));
250 free_pre_client(struct Client
*client_p
)
252 s_assert(NULL
!= client_p
);
254 if(client_p
->preClient
== NULL
)
257 s_assert(client_p
->preClient
->auth
.cid
== 0);
259 rb_free(client_p
->preClient
->auth
.data
);
260 rb_free(client_p
->preClient
->auth
.reason
);
262 rb_bh_free(pclient_heap
, client_p
->preClient
);
263 client_p
->preClient
= NULL
;
267 free_local_client(struct Client
*client_p
)
269 s_assert(NULL
!= client_p
);
270 s_assert(&me
!= client_p
);
272 if(client_p
->localClient
== NULL
)
276 * clean up extra sockets from P-lines which have been discarded.
278 if(client_p
->localClient
->listener
)
280 s_assert(0 < client_p
->localClient
->listener
->ref_count
);
281 if(0 == --client_p
->localClient
->listener
->ref_count
282 && !client_p
->localClient
->listener
->active
)
283 free_listener(client_p
->localClient
->listener
);
284 client_p
->localClient
->listener
= 0;
287 client_release_connids(client_p
);
288 if(client_p
->localClient
->F
!= NULL
)
290 rb_close(client_p
->localClient
->F
);
293 if(client_p
->localClient
->passwd
)
295 memset(client_p
->localClient
->passwd
, 0,
296 strlen(client_p
->localClient
->passwd
));
297 rb_free(client_p
->localClient
->passwd
);
300 rb_free(client_p
->localClient
->auth_user
);
301 rb_free(client_p
->localClient
->challenge
);
302 rb_free(client_p
->localClient
->fullcaps
);
303 rb_free(client_p
->localClient
->mangledhost
);
306 ssld_decrement_clicount(client_p
->localClient
->ssl_ctl
);
308 rb_free(client_p
->localClient
->cipher_string
);
310 if (IsCapable(client_p
, CAP_ZIP
))
311 ssld_decrement_clicount(client_p
->localClient
->z_ctl
);
313 rb_free(client_p
->localClient
->zipstats
);
315 if (client_p
->localClient
->ws_ctl
!= NULL
)
316 wsockd_decrement_clicount(client_p
->localClient
->ws_ctl
);
318 rb_bh_free(lclient_heap
, client_p
->localClient
);
319 client_p
->localClient
= NULL
;
323 free_client(struct Client
*client_p
)
325 s_assert(NULL
!= client_p
);
326 s_assert(&me
!= client_p
);
327 free_local_client(client_p
);
328 free_pre_client(client_p
);
329 rb_free(client_p
->certfp
);
330 rb_bh_free(client_heap
, client_p
);
334 * check_pings - go through the local client list and check activity
335 * kill off stuff that should die
337 * inputs - NOT USED (from event)
338 * output - next time_t when check_pings() should be called again
342 * A PING can be sent to clients as necessary.
344 * Client/Server ping outs are handled.
348 * Addon from adrian. We used to call this after nextping seconds,
349 * however I've changed it to run once a second. This is only for
350 * PING timeouts, not K/etc-line checks (thanks dianora!). Having it
351 * run once a second makes life a lot easier - when a new client connects
352 * and they need a ping in 4 seconds, if nextping was set to 20 seconds
353 * we end up waiting 20 seconds. This is stupid. :-)
354 * I will optimise (hah!) check_pings() once I've finished working on
355 * tidying up other network IO evilnesses.
360 check_pings(void *notused
)
362 check_pings_list(&lclient_list
);
363 check_pings_list(&serv_list
);
364 check_unknowns_list(&unknown_list
);
370 * inputs - pointer to list to check
375 check_pings_list(rb_dlink_list
* list
)
377 char scratch
[32]; /* way too generous but... */
378 struct Client
*client_p
; /* current local client_p being examined */
379 int ping
= 0; /* ping time value from client */
380 rb_dlink_node
*ptr
, *next_ptr
;
382 RB_DLINK_FOREACH_SAFE(ptr
, next_ptr
, list
->head
)
384 client_p
= ptr
->data
;
386 if(!MyConnect(client_p
) || IsDead(client_p
))
389 ping
= get_client_ping(client_p
);
391 if(ping
< (rb_current_time() - client_p
->localClient
->lasttime
))
394 * If the client/server hasnt talked to us in 2*ping seconds
395 * and it has a ping time, then close its connection.
397 if(((rb_current_time() - client_p
->localClient
->lasttime
) >= (2 * ping
)
398 && (client_p
->flags
& FLAGS_PINGSENT
)))
400 if(IsServer(client_p
))
402 sendto_realops_snomask(SNO_GENERAL
, L_ALL
,
403 "No response from %s, closing link",
406 "No response from %s, closing link",
407 log_client_name(client_p
, HIDE_IP
));
409 (void) snprintf(scratch
, sizeof(scratch
),
410 "Ping timeout: %d seconds",
411 (int) (rb_current_time() - client_p
->localClient
->lasttime
));
413 exit_client(client_p
, client_p
, &me
, scratch
);
416 else if((client_p
->flags
& FLAGS_PINGSENT
) == 0)
419 * if we havent PINGed the connection and we havent
420 * heard from it in a while, PING it to make sure
423 client_p
->flags
|= FLAGS_PINGSENT
;
424 /* not nice but does the job */
425 client_p
->localClient
->lasttime
= rb_current_time() - ping
;
426 sendto_one(client_p
, "PING :%s", me
.name
);
435 * check_unknowns_list
437 * inputs - pointer to list of unknown clients
439 * side effects - unknown clients get marked for termination after n seconds
442 check_unknowns_list(rb_dlink_list
* list
)
444 rb_dlink_node
*ptr
, *next_ptr
;
445 struct Client
*client_p
;
448 RB_DLINK_FOREACH_SAFE(ptr
, next_ptr
, list
->head
)
450 client_p
= ptr
->data
;
452 if(IsDead(client_p
) || IsClosing(client_p
))
455 /* Still querying with authd */
456 if(client_p
->preClient
!= NULL
&& client_p
->preClient
->auth
.cid
!= 0)
460 * Check UNKNOWN connections - if they have been in this state
461 * for > 30s, close them.
464 timeout
= IsAnyServer(client_p
) ? ConfigFileEntry
.connect_timeout
: 30;
465 if((rb_current_time() - client_p
->localClient
->firsttime
) > timeout
)
467 if(IsAnyServer(client_p
))
469 sendto_realops_snomask(SNO_GENERAL
, is_remote_connect(client_p
) ? L_NETWIDE
: L_ALL
,
470 "No response from %s, closing link",
473 "No response from %s, closing link",
474 log_client_name(client_p
, HIDE_IP
));
476 exit_client(client_p
, client_p
, &me
, "Connection timed out");
482 notify_banned_client(struct Client
*client_p
, struct ConfItem
*aconf
, int ban
)
484 static const char conn_closed
[] = "Connection closed";
485 static const char d_lined
[] = "D-lined";
486 static const char k_lined
[] = "K-lined";
487 const char *reason
= NULL
;
488 const char *exit_reason
= conn_closed
;
490 if(ConfigFileEntry
.kline_with_reason
)
492 reason
= get_user_ban_reason(aconf
);
493 exit_reason
= reason
;
497 reason
= aconf
->status
== D_LINED
? d_lined
: k_lined
;
500 if(ban
== D_LINED
&& !IsPerson(client_p
))
501 sendto_one(client_p
, "NOTICE DLINE :*** You have been D-lined");
503 sendto_one(client_p
, form_str(ERR_YOUREBANNEDCREEP
),
504 me
.name
, client_p
->name
, reason
);
506 exit_client(client_p
, client_p
, &me
,
507 EmptyString(ConfigFileEntry
.kline_reason
) ? exit_reason
:
508 ConfigFileEntry
.kline_reason
);
515 * side effects - Check all connections for a pending k/dline against the
516 * client, exit the client if found.
519 check_banned_lines(void)
530 * side effects - all clients will be checked for klines
535 struct Client
*client_p
;
536 struct ConfItem
*aconf
;
538 rb_dlink_node
*next_ptr
;
540 RB_DLINK_FOREACH_SAFE(ptr
, next_ptr
, lclient_list
.head
)
542 client_p
= ptr
->data
;
544 if(IsMe(client_p
) || !IsPerson(client_p
))
547 if((aconf
= find_kline(client_p
)) != NULL
)
549 if(IsExemptKline(client_p
))
551 sendto_realops_snomask(SNO_GENERAL
, L_ALL
,
552 "KLINE over-ruled for %s, client is kline_exempt [%s@%s]",
553 get_client_name(client_p
, HIDE_IP
),
554 aconf
->user
, aconf
->host
);
558 sendto_realops_snomask(SNO_GENERAL
, L_ALL
,
559 "KLINE active for %s",
560 get_client_name(client_p
, HIDE_IP
));
562 notify_banned_client(client_p
, aconf
, K_LINED
);
571 * This process needs to be kept in sync with find_kline() aka find_conf_by_address().
573 * inputs - pointer to kline to check
575 * side effects - all clients will be checked against given kline
578 check_one_kline(struct ConfItem
*kline
)
580 struct Client
*client_p
;
582 rb_dlink_node
*next_ptr
;
585 struct rb_sockaddr_storage sockaddr
;
587 masktype
= parse_netmask(kline
->host
, (struct sockaddr_storage
*)&sockaddr
, &bits
);
589 RB_DLINK_FOREACH_SAFE(ptr
, next_ptr
, lclient_list
.head
)
593 client_p
= ptr
->data
;
595 if(IsMe(client_p
) || !IsPerson(client_p
))
598 if(!match(kline
->user
, client_p
->username
))
601 /* match one kline */
605 if (comp_with_mask_sock((struct sockaddr
*)&client_p
->localClient
->ip
,
606 (struct sockaddr
*)&sockaddr
, bits
))
609 if (match(kline
->host
, client_p
->orighost
))
616 if(IsExemptKline(client_p
))
618 sendto_realops_snomask(SNO_GENERAL
, L_NETWIDE
,
619 "KLINE over-ruled for %s, client is kline_exempt [%s@%s]",
620 get_client_name(client_p
, HIDE_IP
),
621 kline
->user
, kline
->host
);
625 sendto_realops_snomask(SNO_GENERAL
, L_ALL
,
626 "KLINE active for %s",
627 get_client_name(client_p
, HIDE_IP
));
629 notify_banned_client(client_p
, kline
, K_LINED
);
638 * side effects - all clients will be checked for dlines
643 struct Client
*client_p
;
644 struct ConfItem
*aconf
;
646 rb_dlink_node
*next_ptr
;
648 RB_DLINK_FOREACH_SAFE(ptr
, next_ptr
, lclient_list
.head
)
650 client_p
= ptr
->data
;
655 if((aconf
= find_dline((struct sockaddr
*)&client_p
->localClient
->ip
, GET_SS_FAMILY(&client_p
->localClient
->ip
))) != NULL
)
657 if(aconf
->status
& CONF_EXEMPTDLINE
)
660 sendto_realops_snomask(SNO_GENERAL
, L_ALL
,
661 "DLINE active for %s",
662 get_client_name(client_p
, HIDE_IP
));
664 notify_banned_client(client_p
, aconf
, D_LINED
);
669 /* dlines need to be checked against unknowns too */
670 RB_DLINK_FOREACH_SAFE(ptr
, next_ptr
, unknown_list
.head
)
672 client_p
= ptr
->data
;
674 if((aconf
= find_dline((struct sockaddr
*)&client_p
->localClient
->ip
, GET_SS_FAMILY(&client_p
->localClient
->ip
))) != NULL
)
676 if(aconf
->status
& CONF_EXEMPTDLINE
)
679 notify_banned_client(client_p
, aconf
, D_LINED
);
688 * side effects - all clients will be checked for xlines
693 struct Client
*client_p
;
694 struct ConfItem
*aconf
;
696 rb_dlink_node
*next_ptr
;
698 RB_DLINK_FOREACH_SAFE(ptr
, next_ptr
, lclient_list
.head
)
700 client_p
= ptr
->data
;
702 if(IsMe(client_p
) || !IsPerson(client_p
))
705 if((aconf
= find_xline(client_p
->info
, 1)) != NULL
)
707 if(IsExemptKline(client_p
))
709 sendto_realops_snomask(SNO_GENERAL
, L_ALL
,
710 "XLINE over-ruled for %s, client is kline_exempt [%s]",
711 get_client_name(client_p
, HIDE_IP
),
716 sendto_realops_snomask(SNO_GENERAL
, L_ALL
, "XLINE active for %s",
717 get_client_name(client_p
, HIDE_IP
));
719 (void) exit_client(client_p
, client_p
, &me
, "Bad user info");
727 * inputs - resv, reason, time
729 * side effects - all local clients matching resv will be FNC'd
732 resv_nick_fnc(const char *mask
, const char *reason
, int temp_time
)
734 struct Client
*client_p
, *target_p
;
736 rb_dlink_node
*next_ptr
;
738 char note
[NICKLEN
+10];
740 if (!ConfigFileEntry
.resv_fnc
)
743 RB_DLINK_FOREACH_SAFE(ptr
, next_ptr
, lclient_list
.head
)
745 client_p
= ptr
->data
;
747 if(IsMe(client_p
) || !IsPerson(client_p
) || IsExemptResv(client_p
))
750 /* Skip users that already have UID nicks. */
751 if(IsDigit(client_p
->name
[0]))
754 if(match_esc(mask
, client_p
->name
))
759 sendto_realops_snomask(SNO_GENERAL
, L_ALL
,
760 "RESV forced nick change for %s!%s@%s to %s; nick matched [%s] (%s)",
761 client_p
->name
, client_p
->username
, client_p
->host
, nick
, mask
, reason
);
763 sendto_realops_snomask(SNO_NCHANGE
, L_ALL
,
764 "Nick change: From %s to %s [%s@%s]",
765 client_p
->name
, nick
, client_p
->username
, client_p
->host
);
770 sendto_one_notice(client_p
,
771 ":*** Nick %s is temporarily unavailable on this server.",
776 sendto_one_notice(client_p
,
777 ":*** Nick %s is no longer available on this server.",
781 /* Do all of the nick-changing gymnastics. */
782 client_p
->tsinfo
= rb_current_time();
783 whowas_add_history(client_p
, 1);
785 monitor_signoff(client_p
);
787 invalidate_bancache_user(client_p
);
789 sendto_common_channels_local(client_p
, NOCAPS
, NOCAPS
, ":%s!%s@%s NICK :%s",
790 client_p
->name
, client_p
->username
, client_p
->host
, nick
);
791 sendto_server(client_p
, NULL
, CAP_TS6
, NOCAPS
, ":%s NICK %s :%ld",
792 use_id(client_p
), nick
, (long) client_p
->tsinfo
);
794 del_from_client_hash(client_p
->name
, client_p
);
795 rb_strlcpy(client_p
->name
, nick
, sizeof(client_p
->name
));
796 add_to_client_hash(nick
, client_p
);
798 monitor_signon(client_p
);
800 RB_DLINK_FOREACH_SAFE(ptr
, next_ptr
, client_p
->on_allow_list
.head
)
802 target_p
= ptr
->data
;
803 rb_dlinkFindDestroy(client_p
, &target_p
->localClient
->allow_list
);
804 rb_dlinkDestroy(ptr
, &client_p
->on_allow_list
);
807 snprintf(note
, sizeof(note
), "Nick: %s", nick
);
808 rb_note(client_p
->localClient
->F
, note
);
814 * update_client_exit_stats
816 * input - pointer to client
821 update_client_exit_stats(struct Client
*client_p
)
823 if(IsServer(client_p
))
825 sendto_realops_snomask(SNO_EXTERNAL
, L_ALL
,
826 "Server %s split from %s",
827 client_p
->name
, client_p
->servptr
->name
);
828 if(HasSentEob(client_p
))
831 else if(IsClient(client_p
))
836 if(IsInvisible(client_p
))
840 if(splitchecking
&& !splitmode
)
841 check_splitmode(NULL
);
845 * release_client_state
847 * input - pointer to client to release
852 release_client_state(struct Client
*client_p
)
854 if(client_p
->user
!= NULL
)
856 free_user(client_p
->user
, client_p
); /* try this here */
860 if(client_p
->serv
->user
!= NULL
)
861 free_user(client_p
->serv
->user
, client_p
);
862 if(client_p
->serv
->fullcaps
)
863 rb_free(client_p
->serv
->fullcaps
);
864 rb_free(client_p
->serv
);
869 * remove_client_from_list
870 * inputs - point to client to remove
872 * side effects - taken the code from ExitOneClient() for this
873 * and placed it here. - avalon
876 remove_client_from_list(struct Client
*client_p
)
878 s_assert(NULL
!= client_p
);
883 /* A client made with make_client()
884 * is on the unknown_list until removed.
885 * If it =does= happen to exit before its removed from that list
886 * and its =not= on the global_client_list, it will core here.
887 * short circuit that case now -db
889 if(client_p
->node
.prev
== NULL
&& client_p
->node
.next
== NULL
)
892 rb_dlinkDelete(&client_p
->node
, &global_client_list
);
894 update_client_exit_stats(client_p
);
900 * input - nickname to check, flag for nick from local client
901 * output - 0 if erroneous, else 1
905 clean_nick(const char *nick
, int loc_client
)
909 /* nicks cant start with a digit or -, and must have a length */
910 if(*nick
== '-' || *nick
== '\0')
913 if(loc_client
&& IsDigit(*nick
))
919 if(!IsNickChar(*nick
))
924 if(len
>= NICKLEN
&& (unsigned int)len
>= ConfigFileEntry
.nicklen
)
931 * find_person - find person by (nick)name.
932 * inputs - pointer to name
933 * output - return client pointer
937 find_person(const char *name
)
939 struct Client
*c2ptr
;
941 c2ptr
= find_client(name
);
943 if(c2ptr
&& IsPerson(c2ptr
))
949 find_named_person(const char *name
)
951 struct Client
*c2ptr
;
953 c2ptr
= find_named_client(name
);
955 if(c2ptr
&& IsPerson(c2ptr
))
962 * find_chasing - find the client structure for a nick name (user)
963 * using history mechanism if necessary. If the client is not found,
964 * an error message (NO SUCH NICK) is generated. If the client was found
965 * through the history, chasing will be 1 and otherwise 0.
968 find_chasing(struct Client
*source_p
, const char *user
, int *chasing
)
972 if(MyClient(source_p
))
973 who
= find_named_person(user
);
975 who
= find_person(user
);
980 if(who
|| IsDigit(*user
))
983 if(!(who
= whowas_get_history(user
, (long) KILLCHASETIMELIMIT
)))
985 sendto_one_numeric(source_p
, ERR_NOSUCHNICK
,
986 form_str(ERR_NOSUCHNICK
), user
);
995 * get_client_name - Return the name of the client
996 * for various tracking and
997 * admin purposes. The main purpose of this function is to
998 * return the "socket host" name of the client, if that
999 * differs from the advertised name (other than case).
1000 * But, this can be used to any client structure.
1003 * Watch out the allocation of "nbuf", if either source_p->name
1004 * or source_p->sockhost gets changed into pointers instead of
1005 * directly allocated within the structure...
1008 * Function return either a pointer to the structure (source_p) or
1009 * to internal buffer (nbuf). *NEVER* use the returned pointer
1010 * to modify what it points!!!
1014 get_client_name(struct Client
*client
, int showip
)
1016 static char nbuf
[HOSTLEN
* 2 + USERLEN
+ 5];
1018 s_assert(NULL
!= client
);
1022 if(MyConnect(client
))
1024 if(!irccmp(client
->name
, client
->host
))
1025 return client
->name
;
1027 if(ConfigFileEntry
.hide_spoof_ips
&&
1028 showip
== SHOW_IP
&& IsIPSpoof(client
))
1030 if(IsAnyServer(client
))
1033 /* And finally, let's get the host information, ip or name */
1037 snprintf(nbuf
, sizeof(nbuf
), "%s[%s@%s]",
1038 client
->name
, client
->username
,
1042 snprintf(nbuf
, sizeof(nbuf
), "%s[%s@255.255.255.255]",
1043 client
->name
, client
->username
);
1046 snprintf(nbuf
, sizeof(nbuf
), "%s[%s@%s]",
1047 client
->name
, client
->username
, client
->host
);
1052 /* As pointed out by Adel Mezibra
1053 * Neph|l|m@EFnet. Was missing a return here.
1055 return client
->name
;
1058 /* log_client_name()
1060 * This version is the same as get_client_name, but doesnt contain the
1061 * code that will hide IPs always. This should be used for logfiles.
1064 log_client_name(struct Client
*target_p
, int showip
)
1066 static char nbuf
[HOSTLEN
* 2 + USERLEN
+ 5];
1068 if(target_p
== NULL
)
1071 if(MyConnect(target_p
))
1073 if(irccmp(target_p
->name
, target_p
->host
) == 0)
1074 return target_p
->name
;
1079 snprintf(nbuf
, sizeof(nbuf
), "%s[%s@%s]", target_p
->name
,
1080 target_p
->username
, target_p
->sockhost
);
1084 snprintf(nbuf
, sizeof(nbuf
), "%s[%s@%s]", target_p
->name
,
1085 target_p
->username
, target_p
->host
);
1091 return target_p
->name
;
1094 /* is_remote_connect - Returns whether a server was /connect'ed by a remote
1095 * oper (send notices netwide) */
1097 is_remote_connect(struct Client
*client_p
)
1099 struct Client
*oper
;
1101 if (client_p
->serv
== NULL
)
1103 oper
= find_named_person(client_p
->serv
->by
);
1104 return oper
!= NULL
&& IsOper(oper
) && !MyConnect(oper
);
1108 free_exited_clients(void *unused
)
1110 rb_dlink_node
*ptr
, *next
;
1111 struct Client
*target_p
;
1113 RB_DLINK_FOREACH_SAFE(ptr
, next
, dead_list
.head
)
1115 target_p
= ptr
->data
;
1117 #ifdef DEBUG_EXITED_CLIENTS
1119 struct abort_client
*abt
;
1120 rb_dlink_node
*aptr
;
1123 RB_DLINK_FOREACH(aptr
, abort_list
.head
)
1126 if(abt
->client
== target_p
)
1129 sendto_realops_snomask(SNO_GENERAL
, L_ALL
,
1130 "On abort_list: %s stat: %u flags: %llu handler: %c",
1131 target_p
->name
, (unsigned int) target_p
->status
,
1132 (unsigned long long)target_p
->flags
, target_p
->handler
);
1133 sendto_realops_snomask(SNO_GENERAL
, L_ALL
,
1134 "Please report this to the charybdis developers!");
1141 rb_dlinkDestroy(ptr
, &dead_list
);
1147 if(ptr
->data
== NULL
)
1149 sendto_realops_snomask(SNO_GENERAL
, L_ALL
,
1150 "Warning: null client on dead_list!");
1151 rb_dlinkDestroy(ptr
, &dead_list
);
1154 release_client_state(target_p
);
1155 free_client(target_p
);
1156 rb_dlinkDestroy(ptr
, &dead_list
);
1159 #ifdef DEBUG_EXITED_CLIENTS
1160 RB_DLINK_FOREACH_SAFE(ptr
, next
, dead_remote_list
.head
)
1162 target_p
= ptr
->data
;
1164 if(ptr
->data
== NULL
)
1166 sendto_realops_snomask(SNO_GENERAL
, L_ALL
,
1167 "Warning: null client on dead_list!");
1168 rb_dlinkDestroy(ptr
, &dead_list
);
1171 release_client_state(target_p
);
1172 free_client(target_p
);
1173 rb_dlinkDestroy(ptr
, &dead_remote_list
);
1180 ** Remove all clients that depend on source_p; assumes all (S)QUITs have
1181 ** already been sent. we make sure to exit a server's dependent clients
1182 ** and servers before the server itself; exit_one_client takes care of
1183 ** actually removing things off llists. tweaked from +CSr31 -orabidoo
1186 * added sanity test code.... source_p->serv might be NULL...
1189 recurse_remove_clients(struct Client
*source_p
, const char *comment
)
1191 struct Client
*target_p
;
1192 rb_dlink_node
*ptr
, *ptr_next
;
1197 if(source_p
->serv
== NULL
) /* oooops. uh this is actually a major bug */
1200 /* this is very ugly, but it saves cpu :P */
1201 if(ConfigFileEntry
.nick_delay
> 0)
1203 RB_DLINK_FOREACH_SAFE(ptr
, ptr_next
, source_p
->serv
->users
.head
)
1205 target_p
= ptr
->data
;
1206 target_p
->flags
|= FLAGS_KILLED
;
1207 add_nd_entry(target_p
->name
);
1209 if(!IsDead(target_p
) && !IsClosing(target_p
))
1210 exit_remote_client(NULL
, target_p
, &me
, comment
);
1215 RB_DLINK_FOREACH_SAFE(ptr
, ptr_next
, source_p
->serv
->users
.head
)
1217 target_p
= ptr
->data
;
1218 target_p
->flags
|= FLAGS_KILLED
;
1220 if(!IsDead(target_p
) && !IsClosing(target_p
))
1221 exit_remote_client(NULL
, target_p
, &me
, comment
);
1225 RB_DLINK_FOREACH_SAFE(ptr
, ptr_next
, source_p
->serv
->servers
.head
)
1227 target_p
= ptr
->data
;
1228 recurse_remove_clients(target_p
, comment
);
1229 qs_server(NULL
, target_p
, &me
, comment
);
1234 ** Remove *everything* that depends on source_p, from all lists, and sending
1235 ** all necessary SQUITs. source_p itself is still on the lists,
1236 ** and its SQUITs have been sent except for the upstream one -orabidoo
1239 remove_dependents(struct Client
*client_p
,
1240 struct Client
*source_p
,
1241 struct Client
*from
, const char *comment
, const char *comment1
)
1244 rb_dlink_node
*ptr
, *next
;
1246 RB_DLINK_FOREACH_SAFE(ptr
, next
, serv_list
.head
)
1250 if(IsMe(to
) || to
== source_p
->from
|| to
== client_p
)
1253 sendto_one(to
, "SQUIT %s :%s", get_id(source_p
, to
), comment
);
1256 recurse_remove_clients(source_p
, comment1
);
1260 exit_aborted_clients(void *unused
)
1262 struct abort_client
*abt
;
1263 rb_dlink_node
*ptr
, *next
;
1264 RB_DLINK_FOREACH_SAFE(ptr
, next
, abort_list
.head
)
1268 #ifdef DEBUG_EXITED_CLIENTS
1270 if(rb_dlinkFind(abt
->client
, &dead_list
))
1273 sendto_realops_snomask(SNO_GENERAL
, L_ALL
,
1274 "On dead_list: %s stat: %u flags: %llu handler: %c",
1275 abt
->client
->name
, (unsigned int) abt
->client
->status
,
1276 (unsigned long long)abt
->client
->flags
, abt
->client
->handler
);
1277 sendto_realops_snomask(SNO_GENERAL
, L_ALL
,
1278 "Please report this to the charybdis developers!");
1284 s_assert(*((unsigned long*)abt
->client
) != 0xdeadbeef); /* This is lame but its a debug thing */
1285 rb_dlinkDelete(ptr
, &abort_list
);
1287 if(IsAnyServer(abt
->client
))
1288 sendto_realops_snomask(SNO_GENERAL
, L_ALL
,
1289 "Closing link to %s: %s",
1290 abt
->client
->name
, abt
->notice
);
1292 /* its no longer on abort list - we *must* remove
1293 * FLAGS_CLOSING otherwise exit_client() will not run --fl
1295 abt
->client
->flags
&= ~FLAGS_CLOSING
;
1296 exit_client(abt
->client
, abt
->client
, &me
, abt
->notice
);
1303 * dead_link - Adds client to a list of clients that need an exit_client()
1306 dead_link(struct Client
*client_p
, int sendqex
)
1308 struct abort_client
*abt
;
1310 s_assert(!IsMe(client_p
));
1311 if(IsDead(client_p
) || IsClosing(client_p
) || IsMe(client_p
))
1314 abt
= (struct abort_client
*) rb_malloc(sizeof(struct abort_client
));
1317 rb_strlcpy(abt
->notice
, "Max SendQ exceeded", sizeof(abt
->notice
));
1319 snprintf(abt
->notice
, sizeof(abt
->notice
), "Write error: %s", strerror(errno
));
1321 abt
->client
= client_p
;
1322 SetIOError(client_p
);
1324 SetClosing(client_p
);
1325 rb_dlinkAdd(abt
, &abt
->node
, &abort_list
);
1329 /* This does the remove of the user from channels..local or remote */
1331 exit_generic_client(struct Client
*client_p
, struct Client
*source_p
, struct Client
*from
,
1332 const char *comment
)
1334 rb_dlink_node
*ptr
, *next_ptr
;
1336 if(IsOper(source_p
))
1337 rb_dlinkFindDestroy(source_p
, &oper_list
);
1339 sendto_common_channels_local(source_p
, NOCAPS
, NOCAPS
, ":%s!%s@%s QUIT :%s",
1341 source_p
->username
, source_p
->host
, comment
);
1343 remove_user_from_channels(source_p
);
1345 /* Should not be in any channels now */
1346 s_assert(source_p
->user
->channel
.head
== NULL
);
1348 /* Clean up invitefield */
1349 RB_DLINK_FOREACH_SAFE(ptr
, next_ptr
, source_p
->user
->invited
.head
)
1351 del_invite(ptr
->data
, source_p
);
1354 /* Clean up allow lists */
1355 del_all_accepts(source_p
);
1357 whowas_add_history(source_p
, 0);
1358 whowas_off_history(source_p
);
1360 monitor_signoff(source_p
);
1362 if(has_id(source_p
))
1363 del_from_id_hash(source_p
->id
, source_p
);
1365 del_from_hostname_hash(source_p
->orighost
, source_p
);
1366 del_from_client_hash(source_p
->name
, source_p
);
1367 remove_client_from_list(source_p
);
1371 * Assumes IsPerson(source_p) && !MyConnect(source_p)
1375 exit_remote_client(struct Client
*client_p
, struct Client
*source_p
, struct Client
*from
,
1376 const char *comment
)
1378 exit_generic_client(client_p
, source_p
, from
, comment
);
1380 if(source_p
->servptr
&& source_p
->servptr
->serv
)
1382 rb_dlinkDelete(&source_p
->lnode
, &source_p
->servptr
->serv
->users
);
1385 if((source_p
->flags
& FLAGS_KILLED
) == 0)
1387 sendto_server(client_p
, NULL
, CAP_TS6
, NOCAPS
,
1388 ":%s QUIT :%s", use_id(source_p
), comment
);
1392 #ifdef DEBUG_EXITED_CLIENTS
1393 rb_dlinkAddAlloc(source_p
, &dead_remote_list
);
1395 rb_dlinkAddAlloc(source_p
, &dead_list
);
1397 return(CLIENT_EXITED
);
1401 * This assumes IsUnknown(source_p) == true and MyConnect(source_p) == true
1405 exit_unknown_client(struct Client
*client_p
, /* The local client originating the
1406 * exit or NULL, if this exit is
1407 * generated by this server for
1409 * This will not get any of the
1410 * generated messages. */
1411 struct Client
*source_p
, /* Client exiting */
1412 struct Client
*from
, /* Client firing off this Exit,
1414 const char *comment
)
1416 authd_abort_client(source_p
);
1417 rb_dlinkDelete(&source_p
->localClient
->tnode
, &unknown_list
);
1419 if(!IsIOError(source_p
))
1420 sendto_one(source_p
, "ERROR :Closing Link: %s (%s)",
1421 source_p
->user
!= NULL
? source_p
->host
: "127.0.0.1",
1424 close_connection(source_p
);
1426 if(has_id(source_p
))
1427 del_from_id_hash(source_p
->id
, source_p
);
1429 del_from_hostname_hash(source_p
->host
, source_p
);
1430 if (!IsAnyServer(source_p
))
1431 del_from_client_hash(source_p
->name
, source_p
);
1432 remove_client_from_list(source_p
);
1434 rb_dlinkAddAlloc(source_p
, &dead_list
);
1436 /* Note that we don't need to add unknowns to the dead_list */
1437 return(CLIENT_EXITED
);
1441 exit_remote_server(struct Client
*client_p
, struct Client
*source_p
, struct Client
*from
,
1442 const char *comment
)
1444 static char comment1
[(HOSTLEN
*2)+2];
1445 static char newcomment
[BUFSIZE
];
1446 struct Client
*target_p
;
1448 if(ConfigServerHide
.flatten_links
)
1449 strcpy(comment1
, "*.net *.split");
1452 strcpy(comment1
, source_p
->servptr
->name
);
1453 strcat(comment1
, " ");
1454 strcat(comment1
, source_p
->name
);
1457 snprintf(newcomment
, sizeof(newcomment
), "by %s: %s",
1458 from
->name
, comment
);
1460 remove_dependents(client_p
, source_p
, from
, IsPerson(from
) ? newcomment
: comment
, comment1
);
1462 rb_dlinkDelete(&source_p
->lnode
, &source_p
->servptr
->serv
->servers
);
1464 rb_dlinkFindDestroy(source_p
, &global_serv_list
);
1465 target_p
= source_p
->from
;
1467 if(target_p
!= NULL
&& IsServer(target_p
) && target_p
!= client_p
&&
1468 !IsMe(target_p
) && (source_p
->flags
& FLAGS_KILLED
) == 0)
1470 sendto_one(target_p
, ":%s SQUIT %s :%s",
1471 get_id(from
, target_p
), get_id(source_p
, target_p
),
1475 if(has_id(source_p
))
1476 del_from_id_hash(source_p
->id
, source_p
);
1478 del_from_client_hash(source_p
->name
, source_p
);
1479 remove_client_from_list(source_p
);
1481 scache_split(source_p
->serv
->nameinfo
);
1484 #ifdef DEBUG_EXITED_CLIENTS
1485 rb_dlinkAddAlloc(source_p
, &dead_remote_list
);
1487 rb_dlinkAddAlloc(source_p
, &dead_list
);
1493 qs_server(struct Client
*client_p
, struct Client
*source_p
, struct Client
*from
,
1494 const char *comment
)
1496 if(source_p
->servptr
&& source_p
->servptr
->serv
)
1497 rb_dlinkDelete(&source_p
->lnode
, &source_p
->servptr
->serv
->servers
);
1501 rb_dlinkFindDestroy(source_p
, &global_serv_list
);
1503 if(has_id(source_p
))
1504 del_from_id_hash(source_p
->id
, source_p
);
1506 del_from_client_hash(source_p
->name
, source_p
);
1507 remove_client_from_list(source_p
);
1508 scache_split(source_p
->serv
->nameinfo
);
1511 rb_dlinkAddAlloc(source_p
, &dead_list
);
1516 exit_local_server(struct Client
*client_p
, struct Client
*source_p
, struct Client
*from
,
1517 const char *comment
)
1519 static char comment1
[(HOSTLEN
*2)+2];
1520 static char newcomment
[BUFSIZE
];
1521 unsigned int sendk
, recvk
;
1523 rb_dlinkDelete(&source_p
->localClient
->tnode
, &serv_list
);
1524 rb_dlinkFindDestroy(source_p
, &global_serv_list
);
1526 sendk
= source_p
->localClient
->sendK
;
1527 recvk
= source_p
->localClient
->receiveK
;
1529 /* Always show source here, so the server notices show
1530 * which side initiated the split -- jilles
1532 snprintf(newcomment
, sizeof(newcomment
), "by %s: %s",
1533 from
== source_p
? me
.name
: from
->name
, comment
);
1534 if (!IsIOError(source_p
))
1535 sendto_one(source_p
, "SQUIT %s :%s", use_id(source_p
),
1537 if(client_p
!= NULL
&& source_p
!= client_p
&& !IsIOError(source_p
))
1539 sendto_one(source_p
, "ERROR :Closing Link: 127.0.0.1 %s (%s)",
1540 source_p
->name
, comment
);
1543 if(source_p
->servptr
&& source_p
->servptr
->serv
)
1544 rb_dlinkDelete(&source_p
->lnode
, &source_p
->servptr
->serv
->servers
);
1549 close_connection(source_p
);
1551 if(ConfigServerHide
.flatten_links
)
1552 strcpy(comment1
, "*.net *.split");
1555 strcpy(comment1
, source_p
->servptr
->name
);
1556 strcat(comment1
, " ");
1557 strcat(comment1
, source_p
->name
);
1560 if(source_p
->serv
!= NULL
)
1561 remove_dependents(client_p
, source_p
, from
, IsPerson(from
) ? newcomment
: comment
, comment1
);
1563 sendto_realops_snomask(SNO_GENERAL
, L_ALL
, "%s was connected"
1564 " for %ld seconds. %d/%d sendK/recvK.",
1565 source_p
->name
, (long) rb_current_time() - source_p
->localClient
->firsttime
, sendk
, recvk
);
1567 ilog(L_SERVER
, "%s was connected for %ld seconds. %d/%d sendK/recvK.",
1568 source_p
->name
, (long) rb_current_time() - source_p
->localClient
->firsttime
, sendk
, recvk
);
1570 if(has_id(source_p
))
1571 del_from_id_hash(source_p
->id
, source_p
);
1573 del_from_client_hash(source_p
->name
, source_p
);
1574 remove_client_from_list(source_p
);
1575 scache_split(source_p
->serv
->nameinfo
);
1578 rb_dlinkAddAlloc(source_p
, &dead_list
);
1584 * This assumes IsPerson(source_p) == true && MyConnect(source_p) == true
1588 exit_local_client(struct Client
*client_p
, struct Client
*source_p
, struct Client
*from
,
1589 const char *comment
)
1591 unsigned long on_for
;
1594 exit_generic_client(client_p
, source_p
, from
, comment
);
1595 clear_monitor(source_p
);
1597 s_assert(IsPerson(source_p
));
1598 rb_dlinkDelete(&source_p
->localClient
->tnode
, &lclient_list
);
1599 rb_dlinkDelete(&source_p
->lnode
, &me
.serv
->users
);
1601 if(IsOper(source_p
))
1602 rb_dlinkFindDestroy(source_p
, &local_oper_list
);
1604 sendto_realops_snomask(SNO_CCONN
, L_ALL
,
1605 "Client exiting: %s (%s@%s) [%s] [%s]",
1607 source_p
->username
, source_p
->host
, comment
,
1608 show_ip(NULL
, source_p
) ? source_p
->sockhost
: "255.255.255.255");
1610 sendto_realops_snomask(SNO_CCONNEXT
, L_ALL
,
1611 "CLIEXIT %s %s %s %s 0 %s",
1612 source_p
->name
, source_p
->username
, source_p
->host
,
1613 show_ip(NULL
, source_p
) ? source_p
->sockhost
: "255.255.255.255",
1616 on_for
= rb_current_time() - source_p
->localClient
->firsttime
;
1618 ilog(L_USER
, "%s (%3lu:%02lu:%02lu): %s!%s@%s %s %d/%d",
1619 rb_ctime(rb_current_time(), tbuf
, sizeof(tbuf
)), on_for
/ 3600,
1620 (on_for
% 3600) / 60, on_for
% 60,
1621 source_p
->name
, source_p
->username
, source_p
->host
,
1623 source_p
->localClient
->sendK
, source_p
->localClient
->receiveK
);
1625 sendto_one(source_p
, "ERROR :Closing Link: %s (%s)", source_p
->host
, comment
);
1626 close_connection(source_p
);
1628 if((source_p
->flags
& FLAGS_KILLED
) == 0)
1630 sendto_server(client_p
, NULL
, CAP_TS6
, NOCAPS
,
1631 ":%s QUIT :%s", use_id(source_p
), comment
);
1635 rb_dlinkAddAlloc(source_p
, &dead_list
);
1636 return(CLIENT_EXITED
);
1641 ** exit_client - This is old "m_bye". Name changed, because this is not a
1642 ** protocol function, but a general server utility function.
1644 ** This function exits a client of *any* type (user, server, etc)
1645 ** from this server. Also, this generates all necessary prototol
1646 ** messages that this exit may cause.
1648 ** 1) If the client is a local client, then this implicitly
1649 ** exits all other clients depending on this connection (e.g.
1650 ** remote clients having 'from'-field that points to this.
1652 ** 2) If the client is a remote client, then only this is exited.
1654 ** For convenience, this function returns a suitable value for
1655 ** m_function return value:
1657 ** CLIENT_EXITED if (client_p == source_p)
1658 ** 0 if (client_p != source_p)
1661 exit_client(struct Client
*client_p
, /* The local client originating the
1662 * exit or NULL, if this exit is
1663 * generated by this server for
1665 * This will not get any of the
1666 * generated messages. */
1667 struct Client
*source_p
, /* Client exiting */
1668 struct Client
*from
, /* Client firing off this Exit,
1670 const char *comment
/* Reason for the exit */
1675 hook_data_client_exit hdata
;
1676 if(IsClosing(source_p
))
1679 /* note, this HAS to be here, when we exit a client we attempt to
1680 * send them data, if this generates a write error we must *not* add
1681 * them to the abort list --fl
1683 SetClosing(source_p
);
1685 hdata
.local_link
= client_p
;
1686 hdata
.target
= source_p
;
1688 hdata
.comment
= comment
;
1689 call_hook(h_client_exit
, &hdata
);
1691 if(MyConnect(source_p
))
1693 /* Local clients of various types */
1694 if(IsPerson(source_p
))
1695 ret
= exit_local_client(client_p
, source_p
, from
, comment
);
1696 else if(IsServer(source_p
))
1697 ret
= exit_local_server(client_p
, source_p
, from
, comment
);
1698 /* IsUnknown || IsConnecting || IsHandShake */
1699 else if(!IsReject(source_p
))
1700 ret
= exit_unknown_client(client_p
, source_p
, from
, comment
);
1705 if(IsPerson(source_p
))
1706 ret
= exit_remote_client(client_p
, source_p
, from
, comment
);
1707 else if(IsServer(source_p
))
1708 ret
= exit_remote_server(client_p
, source_p
, from
, comment
);
1711 call_hook(h_after_client_exit
, NULL
);
1717 * Count up local client memory
1720 /* XXX one common Client list now */
1722 count_local_client_memory(size_t * count
, size_t * local_client_memory_used
)
1725 rb_bh_usage(lclient_heap
, count
, NULL
, &lusage
, NULL
);
1726 *local_client_memory_used
= lusage
+ (*count
* (sizeof(void *) + sizeof(struct Client
)));
1730 * Count up remote client memory
1733 count_remote_client_memory(size_t * count
, size_t * remote_client_memory_used
)
1735 size_t lcount
, rcount
;
1736 rb_bh_usage(lclient_heap
, &lcount
, NULL
, NULL
, NULL
);
1737 rb_bh_usage(client_heap
, &rcount
, NULL
, NULL
, NULL
);
1738 *count
= rcount
- lcount
;
1739 *remote_client_memory_used
= *count
* (sizeof(void *) + sizeof(struct Client
));
1744 * accept processing, this adds a form of "caller ID" to ircd
1746 * If a client puts themselves into "caller ID only" mode,
1747 * only clients that match a client pointer they have put on
1748 * the accept list will be allowed to message them.
1750 * [ source.on_allow_list ] -> [ target1 ] -> [ target2 ]
1752 * [target.allow_list] -> [ source1 ] -> [source2 ]
1754 * i.e. a target will have a link list of source pointers it will allow
1755 * each source client then has a back pointer pointing back
1756 * to the client that has it on its accept list.
1757 * This allows for exit_one_client to remove these now bogus entries
1758 * from any client having an accept on them.
1763 * inputs - pointer to exiting client
1765 * side effects - Walk through given clients allow_list and on_allow_list
1766 * remove all references to this client
1769 del_all_accepts(struct Client
*client_p
)
1772 rb_dlink_node
*next_ptr
;
1773 struct Client
*target_p
;
1775 if(MyClient(client_p
) && client_p
->localClient
->allow_list
.head
)
1777 /* clear this clients accept list, and remove them from
1778 * everyones on_accept_list
1780 RB_DLINK_FOREACH_SAFE(ptr
, next_ptr
, client_p
->localClient
->allow_list
.head
)
1782 target_p
= ptr
->data
;
1783 rb_dlinkFindDestroy(client_p
, &target_p
->on_allow_list
);
1784 rb_dlinkDestroy(ptr
, &client_p
->localClient
->allow_list
);
1788 /* remove this client from everyones accept list */
1789 RB_DLINK_FOREACH_SAFE(ptr
, next_ptr
, client_p
->on_allow_list
.head
)
1791 target_p
= ptr
->data
;
1792 rb_dlinkFindDestroy(client_p
, &target_p
->localClient
->allow_list
);
1793 rb_dlinkDestroy(ptr
, &client_p
->on_allow_list
);
1798 * show_ip() - asks if the true IP should be shown when source is
1799 * asking for info about target
1801 * Inputs - source_p who is asking
1802 * - target_p who do we want the info on
1803 * Output - returns 1 if clear IP can be shown, otherwise 0
1804 * Side Effects - none
1808 show_ip(struct Client
*source_p
, struct Client
*target_p
)
1810 if(IsAnyServer(target_p
))
1814 else if(IsIPSpoof(target_p
))
1816 /* source == NULL indicates message is being sent
1819 if(!ConfigFileEntry
.hide_spoof_ips
&&
1820 (source_p
== NULL
|| MyOper(source_p
)))
1824 else if(IsDynSpoof(target_p
) && (source_p
!= NULL
&& !IsOper(source_p
)))
1831 show_ip_conf(struct ConfItem
*aconf
, struct Client
*source_p
)
1833 if(IsConfDoSpoofIp(aconf
))
1835 if(!ConfigFileEntry
.hide_spoof_ips
&& MyOper(source_p
))
1845 show_ip_whowas(struct Whowas
*whowas
, struct Client
*source_p
)
1847 if(whowas
->flags
& WHOWAS_IP_SPOOFING
)
1848 if(ConfigFileEntry
.hide_spoof_ips
|| !MyOper(source_p
))
1850 if(whowas
->flags
& WHOWAS_DYNSPOOF
)
1851 if(!IsOper(source_p
))
1859 * inputs - pointer to client struct
1860 * output - pointer to struct User
1861 * side effects - add's an User information block to a client
1862 * if it was not previously allocated.
1865 make_user(struct Client
*client_p
)
1869 user
= client_p
->user
;
1872 user
= (struct User
*) rb_bh_alloc(user_heap
);
1874 client_p
->user
= user
;
1882 * inputs - pointer to client struct
1883 * output - pointer to server_t
1884 * side effects - add's an Server information block to a client
1885 * if it was not previously allocated.
1888 make_server(struct Client
*client_p
)
1890 struct Server
*serv
= client_p
->serv
;
1894 serv
= (struct Server
*) rb_malloc(sizeof(struct Server
));
1895 client_p
->serv
= serv
;
1897 return client_p
->serv
;
1903 * inputs - pointer to user struct
1904 * - pointer to client struct
1906 * side effects - Decrease user reference count by one and release block,
1907 * if count reaches 0
1910 free_user(struct User
*user
, struct Client
*client_p
)
1912 free_away(client_p
);
1914 if(--user
->refcnt
<= 0)
1917 rb_free((char *) user
->away
);
1918 rb_free(user
->opername
);
1920 privilegeset_unref(user
->privset
);
1924 if(user
->refcnt
< 0 || user
->invited
.head
|| user
->channel
.head
)
1926 sendto_realops_snomask(SNO_GENERAL
, L_ALL
,
1927 "* %p user (%s!%s@%s) %p %p %p %lu %d *",
1929 client_p
? client_p
->
1936 rb_dlink_list_length(&user
->channel
),
1938 s_assert(!user
->refcnt
);
1939 s_assert(!user
->invited
.head
);
1940 s_assert(!user
->channel
.head
);
1943 rb_bh_free(user_heap
, user
);
1948 allocate_away(struct Client
*client_p
)
1950 if(client_p
->user
->away
== NULL
)
1951 client_p
->user
->away
= rb_bh_alloc(away_heap
);
1956 free_away(struct Client
*client_p
)
1958 if(client_p
->user
!= NULL
&& client_p
->user
->away
!= NULL
) {
1959 rb_bh_free(away_heap
, client_p
->user
->away
);
1960 client_p
->user
->away
= NULL
;
1969 for(i
= 0; i
< 3; i
++)
1970 current_uid
[i
] = me
.id
[i
];
1972 for(i
= 3; i
< 9; i
++)
1973 current_uid
[i
] = 'A';
1975 current_uid
[9] = '\0';
1982 static int flipped
= 0;
1986 for(i
= 8; i
> 3; i
--)
1988 if(current_uid
[i
] == 'Z')
1990 current_uid
[i
] = '0';
1993 else if(current_uid
[i
] != '9')
1999 current_uid
[i
] = 'A';
2002 /* if this next if() triggers, we're fucked. */
2003 if(current_uid
[3] == 'Z')
2005 current_uid
[i
] = 'A';
2011 /* if this happens..well, i'm not sure what to say, but lets handle it correctly */
2012 if(rb_unlikely(flipped
))
2014 /* this slows down uid generation a bit... */
2015 if(find_id(current_uid
) != NULL
)
2023 * Close the physical connection. This function must make
2024 * MyConnect(client_p) == FALSE, and set client_p->from == NULL.
2027 close_connection(struct Client
*client_p
)
2029 s_assert(client_p
!= NULL
);
2030 if(client_p
== NULL
)
2033 s_assert(MyConnect(client_p
));
2034 if(!MyConnect(client_p
))
2037 if(IsServer(client_p
))
2039 struct server_conf
*server_p
;
2041 ServerStats
.is_sv
++;
2042 ServerStats
.is_sbs
+= client_p
->localClient
->sendB
;
2043 ServerStats
.is_sbr
+= client_p
->localClient
->receiveB
;
2044 ServerStats
.is_sti
+= (unsigned long long)(rb_current_time() - client_p
->localClient
->firsttime
);
2047 * If the connection has been up for a long amount of time, schedule
2048 * a 'quick' reconnect, else reset the next-connect cycle.
2050 if((server_p
= find_server_conf(client_p
->name
)) != NULL
)
2053 * Reschedule a faster reconnect, if this was a automatically
2054 * connected configuration entry. (Note that if we have had
2055 * a rehash in between, the status has been changed to
2056 * CONF_ILLEGAL). But only do this if it was a "good" link.
2058 server_p
->hold
= time(NULL
);
2060 (server_p
->hold
- client_p
->localClient
->lasttime
>
2061 HANGONGOODLINK
) ? HANGONRETRYDELAY
: ConFreq(server_p
->class);
2065 else if(IsClient(client_p
))
2067 ServerStats
.is_cl
++;
2068 ServerStats
.is_cbs
+= client_p
->localClient
->sendB
;
2069 ServerStats
.is_cbr
+= client_p
->localClient
->receiveB
;
2070 ServerStats
.is_cti
+= (unsigned long long)(rb_current_time() - client_p
->localClient
->firsttime
);
2073 ServerStats
.is_ni
++;
2075 client_release_connids(client_p
);
2077 if(client_p
->localClient
->F
!= NULL
)
2079 /* attempt to flush any pending dbufs. Evil, but .. -- adrian */
2080 if(!IsIOError(client_p
))
2081 send_queued(client_p
);
2083 rb_close(client_p
->localClient
->F
);
2084 client_p
->localClient
->F
= NULL
;
2087 rb_linebuf_donebuf(&client_p
->localClient
->buf_sendq
);
2088 rb_linebuf_donebuf(&client_p
->localClient
->buf_recvq
);
2089 detach_conf(client_p
);
2091 /* XXX shouldnt really be done here. */
2092 detach_server_conf(client_p
);
2094 client_p
->from
= NULL
; /* ...this should catch them! >:) --msa */
2095 ClearMyConnect(client_p
);
2096 SetIOError(client_p
);
2102 error_exit_client(struct Client
*client_p
, int error
)
2105 * ...hmm, with non-blocking sockets we might get
2106 * here from quite valid reasons, although.. why
2107 * would select report "data available" when there
2108 * wasn't... so, this must be an error anyway... --msa
2109 * actually, EOF occurs when read() returns 0 and
2110 * in due course, select() returns that fd as ready
2111 * for reading even though it ends up being an EOF. -avalon
2114 int current_error
= rb_get_sockerr(client_p
->localClient
->F
);
2116 SetIOError(client_p
);
2118 if(IsServer(client_p
) || IsHandshake(client_p
))
2122 sendto_realops_snomask(SNO_GENERAL
, is_remote_connect(client_p
) && !IsServer(client_p
) ? L_NETWIDE
: L_ALL
,
2123 "Server %s closed the connection",
2126 ilog(L_SERVER
, "Server %s closed the connection",
2127 log_client_name(client_p
, SHOW_IP
));
2131 sendto_realops_snomask(SNO_GENERAL
, is_remote_connect(client_p
) && !IsServer(client_p
) ? L_NETWIDE
: L_ALL
,
2132 "Lost connection to %s: %s",
2133 client_p
->name
, strerror(current_error
));
2134 ilog(L_SERVER
, "Lost connection to %s: %s",
2135 log_client_name(client_p
, SHOW_IP
), strerror(current_error
));
2140 rb_strlcpy(errmsg
, "Remote host closed the connection", sizeof(errmsg
));
2142 snprintf(errmsg
, sizeof(errmsg
), "Read error: %s", strerror(current_error
));
2144 exit_client(client_p
, client_p
, &me
, errmsg
);