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
;
584 RB_DLINK_FOREACH_SAFE(ptr
, next_ptr
, lclient_list
.head
)
586 client_p
= ptr
->data
;
588 if(IsMe(client_p
) || !IsPerson(client_p
))
591 if(!match(kline
->user
, client_p
->username
))
594 /* match one kline */
599 struct rb_sockaddr_storage sockaddr
;
601 masktype
= parse_netmask(kline
->host
, (struct sockaddr_storage
*)&sockaddr
, &bits
);
606 if(comp_with_mask_sock((struct sockaddr
*)&client_p
->localClient
->ip
,
607 (struct sockaddr
*)&sockaddr
, bits
))
610 if (match(kline
->host
, client_p
->orighost
))
618 if(IsExemptKline(client_p
))
620 sendto_realops_snomask(SNO_GENERAL
, L_NETWIDE
,
621 "KLINE over-ruled for %s, client is kline_exempt [%s@%s]",
622 get_client_name(client_p
, HIDE_IP
),
623 kline
->user
, kline
->host
);
627 sendto_realops_snomask(SNO_GENERAL
, L_ALL
,
628 "KLINE active for %s",
629 get_client_name(client_p
, HIDE_IP
));
631 notify_banned_client(client_p
, kline
, K_LINED
);
640 * side effects - all clients will be checked for dlines
645 struct Client
*client_p
;
646 struct ConfItem
*aconf
;
648 rb_dlink_node
*next_ptr
;
650 RB_DLINK_FOREACH_SAFE(ptr
, next_ptr
, lclient_list
.head
)
652 client_p
= ptr
->data
;
657 if((aconf
= find_dline((struct sockaddr
*)&client_p
->localClient
->ip
, GET_SS_FAMILY(&client_p
->localClient
->ip
))) != NULL
)
659 if(aconf
->status
& CONF_EXEMPTDLINE
)
662 sendto_realops_snomask(SNO_GENERAL
, L_ALL
,
663 "DLINE active for %s",
664 get_client_name(client_p
, HIDE_IP
));
666 notify_banned_client(client_p
, aconf
, D_LINED
);
671 /* dlines need to be checked against unknowns too */
672 RB_DLINK_FOREACH_SAFE(ptr
, next_ptr
, unknown_list
.head
)
674 client_p
= ptr
->data
;
676 if((aconf
= find_dline((struct sockaddr
*)&client_p
->localClient
->ip
, GET_SS_FAMILY(&client_p
->localClient
->ip
))) != NULL
)
678 if(aconf
->status
& CONF_EXEMPTDLINE
)
681 notify_banned_client(client_p
, aconf
, D_LINED
);
690 * side effects - all clients will be checked for xlines
695 struct Client
*client_p
;
696 struct ConfItem
*aconf
;
698 rb_dlink_node
*next_ptr
;
700 RB_DLINK_FOREACH_SAFE(ptr
, next_ptr
, lclient_list
.head
)
702 client_p
= ptr
->data
;
704 if(IsMe(client_p
) || !IsPerson(client_p
))
707 if((aconf
= find_xline(client_p
->info
, 1)) != NULL
)
709 if(IsExemptKline(client_p
))
711 sendto_realops_snomask(SNO_GENERAL
, L_ALL
,
712 "XLINE over-ruled for %s, client is kline_exempt [%s]",
713 get_client_name(client_p
, HIDE_IP
),
718 sendto_realops_snomask(SNO_GENERAL
, L_ALL
, "XLINE active for %s",
719 get_client_name(client_p
, HIDE_IP
));
721 (void) exit_client(client_p
, client_p
, &me
, "Bad user info");
729 * inputs - resv, reason, time
731 * side effects - all local clients matching resv will be FNC'd
734 resv_nick_fnc(const char *mask
, const char *reason
, int temp_time
)
736 struct Client
*client_p
, *target_p
;
738 rb_dlink_node
*next_ptr
;
740 char note
[NICKLEN
+10];
742 if (!ConfigFileEntry
.resv_fnc
)
745 RB_DLINK_FOREACH_SAFE(ptr
, next_ptr
, lclient_list
.head
)
747 client_p
= ptr
->data
;
749 if(IsMe(client_p
) || !IsPerson(client_p
) || IsExemptResv(client_p
))
752 /* Skip users that already have UID nicks. */
753 if(IsDigit(client_p
->name
[0]))
756 if(match_esc(mask
, client_p
->name
))
761 sendto_realops_snomask(SNO_GENERAL
, L_ALL
,
762 "RESV forced nick change for %s!%s@%s to %s; nick matched [%s] (%s)",
763 client_p
->name
, client_p
->username
, client_p
->host
, nick
, mask
, reason
);
765 sendto_realops_snomask(SNO_NCHANGE
, L_ALL
,
766 "Nick change: From %s to %s [%s@%s]",
767 client_p
->name
, nick
, client_p
->username
, client_p
->host
);
772 sendto_one_notice(client_p
,
773 ":*** Nick %s is temporarily unavailable on this server.",
778 sendto_one_notice(client_p
,
779 ":*** Nick %s is no longer available on this server.",
783 /* Do all of the nick-changing gymnastics. */
784 client_p
->tsinfo
= rb_current_time();
785 whowas_add_history(client_p
, 1);
787 monitor_signoff(client_p
);
789 invalidate_bancache_user(client_p
);
791 sendto_common_channels_local(client_p
, NOCAPS
, NOCAPS
, ":%s!%s@%s NICK :%s",
792 client_p
->name
, client_p
->username
, client_p
->host
, nick
);
793 sendto_server(client_p
, NULL
, CAP_TS6
, NOCAPS
, ":%s NICK %s :%ld",
794 use_id(client_p
), nick
, (long) client_p
->tsinfo
);
796 del_from_client_hash(client_p
->name
, client_p
);
797 rb_strlcpy(client_p
->name
, nick
, sizeof(client_p
->name
));
798 add_to_client_hash(nick
, client_p
);
800 monitor_signon(client_p
);
802 RB_DLINK_FOREACH_SAFE(ptr
, next_ptr
, client_p
->on_allow_list
.head
)
804 target_p
= ptr
->data
;
805 rb_dlinkFindDestroy(client_p
, &target_p
->localClient
->allow_list
);
806 rb_dlinkDestroy(ptr
, &client_p
->on_allow_list
);
809 snprintf(note
, sizeof(note
), "Nick: %s", nick
);
810 rb_note(client_p
->localClient
->F
, note
);
816 * update_client_exit_stats
818 * input - pointer to client
823 update_client_exit_stats(struct Client
*client_p
)
825 if(IsServer(client_p
))
827 sendto_realops_snomask(SNO_EXTERNAL
, L_ALL
,
828 "Server %s split from %s",
829 client_p
->name
, client_p
->servptr
->name
);
830 if(HasSentEob(client_p
))
833 else if(IsClient(client_p
))
838 if(IsInvisible(client_p
))
842 if(splitchecking
&& !splitmode
)
843 check_splitmode(NULL
);
847 * release_client_state
849 * input - pointer to client to release
854 release_client_state(struct Client
*client_p
)
856 if(client_p
->user
!= NULL
)
858 free_user(client_p
->user
, client_p
); /* try this here */
862 if(client_p
->serv
->user
!= NULL
)
863 free_user(client_p
->serv
->user
, client_p
);
864 if(client_p
->serv
->fullcaps
)
865 rb_free(client_p
->serv
->fullcaps
);
866 rb_free(client_p
->serv
);
871 * remove_client_from_list
872 * inputs - point to client to remove
874 * side effects - taken the code from ExitOneClient() for this
875 * and placed it here. - avalon
878 remove_client_from_list(struct Client
*client_p
)
880 s_assert(NULL
!= client_p
);
885 /* A client made with make_client()
886 * is on the unknown_list until removed.
887 * If it =does= happen to exit before its removed from that list
888 * and its =not= on the global_client_list, it will core here.
889 * short circuit that case now -db
891 if(client_p
->node
.prev
== NULL
&& client_p
->node
.next
== NULL
)
894 rb_dlinkDelete(&client_p
->node
, &global_client_list
);
896 update_client_exit_stats(client_p
);
902 * input - nickname to check, flag for nick from local client
903 * output - 0 if erroneous, else 1
907 clean_nick(const char *nick
, int loc_client
)
911 /* nicks cant start with a digit or -, and must have a length */
912 if(*nick
== '-' || *nick
== '\0')
915 if(loc_client
&& IsDigit(*nick
))
921 if(!IsNickChar(*nick
))
926 if(len
>= NICKLEN
&& (unsigned int)len
>= ConfigFileEntry
.nicklen
)
933 * find_person - find person by (nick)name.
934 * inputs - pointer to name
935 * output - return client pointer
939 find_person(const char *name
)
941 struct Client
*c2ptr
;
943 c2ptr
= find_client(name
);
945 if(c2ptr
&& IsPerson(c2ptr
))
951 find_named_person(const char *name
)
953 struct Client
*c2ptr
;
955 c2ptr
= find_named_client(name
);
957 if(c2ptr
&& IsPerson(c2ptr
))
964 * find_chasing - find the client structure for a nick name (user)
965 * using history mechanism if necessary. If the client is not found,
966 * an error message (NO SUCH NICK) is generated. If the client was found
967 * through the history, chasing will be 1 and otherwise 0.
970 find_chasing(struct Client
*source_p
, const char *user
, int *chasing
)
974 if(MyClient(source_p
))
975 who
= find_named_person(user
);
977 who
= find_person(user
);
982 if(who
|| IsDigit(*user
))
985 if(!(who
= whowas_get_history(user
, (long) KILLCHASETIMELIMIT
)))
987 sendto_one_numeric(source_p
, ERR_NOSUCHNICK
,
988 form_str(ERR_NOSUCHNICK
), user
);
997 * get_client_name - Return the name of the client
998 * for various tracking and
999 * admin purposes. The main purpose of this function is to
1000 * return the "socket host" name of the client, if that
1001 * differs from the advertised name (other than case).
1002 * But, this can be used to any client structure.
1005 * Watch out the allocation of "nbuf", if either source_p->name
1006 * or source_p->sockhost gets changed into pointers instead of
1007 * directly allocated within the structure...
1010 * Function return either a pointer to the structure (source_p) or
1011 * to internal buffer (nbuf). *NEVER* use the returned pointer
1012 * to modify what it points!!!
1016 get_client_name(struct Client
*client
, int showip
)
1018 static char nbuf
[HOSTLEN
* 2 + USERLEN
+ 5];
1020 s_assert(NULL
!= client
);
1024 if(MyConnect(client
))
1026 if(!irccmp(client
->name
, client
->host
))
1027 return client
->name
;
1029 if(ConfigFileEntry
.hide_spoof_ips
&&
1030 showip
== SHOW_IP
&& IsIPSpoof(client
))
1032 if(IsAnyServer(client
))
1035 /* And finally, let's get the host information, ip or name */
1039 snprintf(nbuf
, sizeof(nbuf
), "%s[%s@%s]",
1040 client
->name
, client
->username
,
1044 snprintf(nbuf
, sizeof(nbuf
), "%s[%s@255.255.255.255]",
1045 client
->name
, client
->username
);
1048 snprintf(nbuf
, sizeof(nbuf
), "%s[%s@%s]",
1049 client
->name
, client
->username
, client
->host
);
1054 /* As pointed out by Adel Mezibra
1055 * Neph|l|m@EFnet. Was missing a return here.
1057 return client
->name
;
1060 /* log_client_name()
1062 * This version is the same as get_client_name, but doesnt contain the
1063 * code that will hide IPs always. This should be used for logfiles.
1066 log_client_name(struct Client
*target_p
, int showip
)
1068 static char nbuf
[HOSTLEN
* 2 + USERLEN
+ 5];
1070 if(target_p
== NULL
)
1073 if(MyConnect(target_p
))
1075 if(irccmp(target_p
->name
, target_p
->host
) == 0)
1076 return target_p
->name
;
1081 snprintf(nbuf
, sizeof(nbuf
), "%s[%s@%s]", target_p
->name
,
1082 target_p
->username
, target_p
->sockhost
);
1086 snprintf(nbuf
, sizeof(nbuf
), "%s[%s@%s]", target_p
->name
,
1087 target_p
->username
, target_p
->host
);
1093 return target_p
->name
;
1096 /* is_remote_connect - Returns whether a server was /connect'ed by a remote
1097 * oper (send notices netwide) */
1099 is_remote_connect(struct Client
*client_p
)
1101 struct Client
*oper
;
1103 if (client_p
->serv
== NULL
)
1105 oper
= find_named_person(client_p
->serv
->by
);
1106 return oper
!= NULL
&& IsOper(oper
) && !MyConnect(oper
);
1110 free_exited_clients(void *unused
)
1112 rb_dlink_node
*ptr
, *next
;
1113 struct Client
*target_p
;
1115 RB_DLINK_FOREACH_SAFE(ptr
, next
, dead_list
.head
)
1117 target_p
= ptr
->data
;
1119 #ifdef DEBUG_EXITED_CLIENTS
1121 struct abort_client
*abt
;
1122 rb_dlink_node
*aptr
;
1125 RB_DLINK_FOREACH(aptr
, abort_list
.head
)
1128 if(abt
->client
== target_p
)
1131 sendto_realops_snomask(SNO_GENERAL
, L_ALL
,
1132 "On abort_list: %s stat: %u flags: %llu handler: %c",
1133 target_p
->name
, (unsigned int) target_p
->status
,
1134 (unsigned long long)target_p
->flags
, target_p
->handler
);
1135 sendto_realops_snomask(SNO_GENERAL
, L_ALL
,
1136 "Please report this to the charybdis developers!");
1143 rb_dlinkDestroy(ptr
, &dead_list
);
1149 if(ptr
->data
== NULL
)
1151 sendto_realops_snomask(SNO_GENERAL
, L_ALL
,
1152 "Warning: null client on dead_list!");
1153 rb_dlinkDestroy(ptr
, &dead_list
);
1156 release_client_state(target_p
);
1157 free_client(target_p
);
1158 rb_dlinkDestroy(ptr
, &dead_list
);
1161 #ifdef DEBUG_EXITED_CLIENTS
1162 RB_DLINK_FOREACH_SAFE(ptr
, next
, dead_remote_list
.head
)
1164 target_p
= ptr
->data
;
1166 if(ptr
->data
== NULL
)
1168 sendto_realops_snomask(SNO_GENERAL
, L_ALL
,
1169 "Warning: null client on dead_list!");
1170 rb_dlinkDestroy(ptr
, &dead_list
);
1173 release_client_state(target_p
);
1174 free_client(target_p
);
1175 rb_dlinkDestroy(ptr
, &dead_remote_list
);
1182 ** Remove all clients that depend on source_p; assumes all (S)QUITs have
1183 ** already been sent. we make sure to exit a server's dependent clients
1184 ** and servers before the server itself; exit_one_client takes care of
1185 ** actually removing things off llists. tweaked from +CSr31 -orabidoo
1188 * added sanity test code.... source_p->serv might be NULL...
1191 recurse_remove_clients(struct Client
*source_p
, const char *comment
)
1193 struct Client
*target_p
;
1194 rb_dlink_node
*ptr
, *ptr_next
;
1199 if(source_p
->serv
== NULL
) /* oooops. uh this is actually a major bug */
1202 /* this is very ugly, but it saves cpu :P */
1203 if(ConfigFileEntry
.nick_delay
> 0)
1205 RB_DLINK_FOREACH_SAFE(ptr
, ptr_next
, source_p
->serv
->users
.head
)
1207 target_p
= ptr
->data
;
1208 target_p
->flags
|= FLAGS_KILLED
;
1209 add_nd_entry(target_p
->name
);
1211 if(!IsDead(target_p
) && !IsClosing(target_p
))
1212 exit_remote_client(NULL
, target_p
, &me
, comment
);
1217 RB_DLINK_FOREACH_SAFE(ptr
, ptr_next
, source_p
->serv
->users
.head
)
1219 target_p
= ptr
->data
;
1220 target_p
->flags
|= FLAGS_KILLED
;
1222 if(!IsDead(target_p
) && !IsClosing(target_p
))
1223 exit_remote_client(NULL
, target_p
, &me
, comment
);
1227 RB_DLINK_FOREACH_SAFE(ptr
, ptr_next
, source_p
->serv
->servers
.head
)
1229 target_p
= ptr
->data
;
1230 recurse_remove_clients(target_p
, comment
);
1231 qs_server(NULL
, target_p
, &me
, comment
);
1236 ** Remove *everything* that depends on source_p, from all lists, and sending
1237 ** all necessary SQUITs. source_p itself is still on the lists,
1238 ** and its SQUITs have been sent except for the upstream one -orabidoo
1241 remove_dependents(struct Client
*client_p
,
1242 struct Client
*source_p
,
1243 struct Client
*from
, const char *comment
, const char *comment1
)
1246 rb_dlink_node
*ptr
, *next
;
1248 RB_DLINK_FOREACH_SAFE(ptr
, next
, serv_list
.head
)
1252 if(IsMe(to
) || to
== source_p
->from
|| to
== client_p
)
1255 sendto_one(to
, "SQUIT %s :%s", get_id(source_p
, to
), comment
);
1258 recurse_remove_clients(source_p
, comment1
);
1262 exit_aborted_clients(void *unused
)
1264 struct abort_client
*abt
;
1265 rb_dlink_node
*ptr
, *next
;
1266 RB_DLINK_FOREACH_SAFE(ptr
, next
, abort_list
.head
)
1270 #ifdef DEBUG_EXITED_CLIENTS
1272 if(rb_dlinkFind(abt
->client
, &dead_list
))
1275 sendto_realops_snomask(SNO_GENERAL
, L_ALL
,
1276 "On dead_list: %s stat: %u flags: %llu handler: %c",
1277 abt
->client
->name
, (unsigned int) abt
->client
->status
,
1278 (unsigned long long)abt
->client
->flags
, abt
->client
->handler
);
1279 sendto_realops_snomask(SNO_GENERAL
, L_ALL
,
1280 "Please report this to the charybdis developers!");
1286 s_assert(*((unsigned long*)abt
->client
) != 0xdeadbeef); /* This is lame but its a debug thing */
1287 rb_dlinkDelete(ptr
, &abort_list
);
1289 if(IsAnyServer(abt
->client
))
1290 sendto_realops_snomask(SNO_GENERAL
, L_ALL
,
1291 "Closing link to %s: %s",
1292 abt
->client
->name
, abt
->notice
);
1294 /* its no longer on abort list - we *must* remove
1295 * FLAGS_CLOSING otherwise exit_client() will not run --fl
1297 abt
->client
->flags
&= ~FLAGS_CLOSING
;
1298 exit_client(abt
->client
, abt
->client
, &me
, abt
->notice
);
1305 * dead_link - Adds client to a list of clients that need an exit_client()
1308 dead_link(struct Client
*client_p
, int sendqex
)
1310 struct abort_client
*abt
;
1312 s_assert(!IsMe(client_p
));
1313 if(IsDead(client_p
) || IsClosing(client_p
) || IsMe(client_p
))
1316 abt
= (struct abort_client
*) rb_malloc(sizeof(struct abort_client
));
1319 rb_strlcpy(abt
->notice
, "Max SendQ exceeded", sizeof(abt
->notice
));
1321 snprintf(abt
->notice
, sizeof(abt
->notice
), "Write error: %s", strerror(errno
));
1323 abt
->client
= client_p
;
1324 SetIOError(client_p
);
1326 SetClosing(client_p
);
1327 rb_dlinkAdd(abt
, &abt
->node
, &abort_list
);
1331 /* This does the remove of the user from channels..local or remote */
1333 exit_generic_client(struct Client
*client_p
, struct Client
*source_p
, struct Client
*from
,
1334 const char *comment
)
1336 rb_dlink_node
*ptr
, *next_ptr
;
1338 if(IsOper(source_p
))
1339 rb_dlinkFindDestroy(source_p
, &oper_list
);
1341 sendto_common_channels_local(source_p
, NOCAPS
, NOCAPS
, ":%s!%s@%s QUIT :%s",
1343 source_p
->username
, source_p
->host
, comment
);
1345 remove_user_from_channels(source_p
);
1347 /* Should not be in any channels now */
1348 s_assert(source_p
->user
->channel
.head
== NULL
);
1350 /* Clean up invitefield */
1351 RB_DLINK_FOREACH_SAFE(ptr
, next_ptr
, source_p
->user
->invited
.head
)
1353 del_invite(ptr
->data
, source_p
);
1356 /* Clean up allow lists */
1357 del_all_accepts(source_p
);
1359 whowas_add_history(source_p
, 0);
1360 whowas_off_history(source_p
);
1362 monitor_signoff(source_p
);
1364 if(has_id(source_p
))
1365 del_from_id_hash(source_p
->id
, source_p
);
1367 del_from_hostname_hash(source_p
->orighost
, source_p
);
1368 del_from_client_hash(source_p
->name
, source_p
);
1369 remove_client_from_list(source_p
);
1373 * Assumes IsPerson(source_p) && !MyConnect(source_p)
1377 exit_remote_client(struct Client
*client_p
, struct Client
*source_p
, struct Client
*from
,
1378 const char *comment
)
1380 exit_generic_client(client_p
, source_p
, from
, comment
);
1382 if(source_p
->servptr
&& source_p
->servptr
->serv
)
1384 rb_dlinkDelete(&source_p
->lnode
, &source_p
->servptr
->serv
->users
);
1387 if((source_p
->flags
& FLAGS_KILLED
) == 0)
1389 sendto_server(client_p
, NULL
, CAP_TS6
, NOCAPS
,
1390 ":%s QUIT :%s", use_id(source_p
), comment
);
1394 #ifdef DEBUG_EXITED_CLIENTS
1395 rb_dlinkAddAlloc(source_p
, &dead_remote_list
);
1397 rb_dlinkAddAlloc(source_p
, &dead_list
);
1399 return(CLIENT_EXITED
);
1403 * This assumes IsUnknown(source_p) == true and MyConnect(source_p) == true
1407 exit_unknown_client(struct Client
*client_p
, /* The local client originating the
1408 * exit or NULL, if this exit is
1409 * generated by this server for
1411 * This will not get any of the
1412 * generated messages. */
1413 struct Client
*source_p
, /* Client exiting */
1414 struct Client
*from
, /* Client firing off this Exit,
1416 const char *comment
)
1418 authd_abort_client(source_p
);
1419 rb_dlinkDelete(&source_p
->localClient
->tnode
, &unknown_list
);
1421 if(!IsIOError(source_p
))
1422 sendto_one(source_p
, "ERROR :Closing Link: %s (%s)",
1423 source_p
->user
!= NULL
? source_p
->host
: "127.0.0.1",
1426 close_connection(source_p
);
1428 if(has_id(source_p
))
1429 del_from_id_hash(source_p
->id
, source_p
);
1431 del_from_hostname_hash(source_p
->host
, source_p
);
1432 if (!IsAnyServer(source_p
))
1433 del_from_client_hash(source_p
->name
, source_p
);
1434 remove_client_from_list(source_p
);
1436 rb_dlinkAddAlloc(source_p
, &dead_list
);
1438 /* Note that we don't need to add unknowns to the dead_list */
1439 return(CLIENT_EXITED
);
1443 exit_remote_server(struct Client
*client_p
, struct Client
*source_p
, struct Client
*from
,
1444 const char *comment
)
1446 static char comment1
[(HOSTLEN
*2)+2];
1447 static char newcomment
[BUFSIZE
];
1448 struct Client
*target_p
;
1450 if(ConfigServerHide
.flatten_links
)
1451 strcpy(comment1
, "*.net *.split");
1454 strcpy(comment1
, source_p
->servptr
->name
);
1455 strcat(comment1
, " ");
1456 strcat(comment1
, source_p
->name
);
1459 snprintf(newcomment
, sizeof(newcomment
), "by %s: %s",
1460 from
->name
, comment
);
1462 remove_dependents(client_p
, source_p
, from
, IsPerson(from
) ? newcomment
: comment
, comment1
);
1464 rb_dlinkDelete(&source_p
->lnode
, &source_p
->servptr
->serv
->servers
);
1466 rb_dlinkFindDestroy(source_p
, &global_serv_list
);
1467 target_p
= source_p
->from
;
1469 if(target_p
!= NULL
&& IsServer(target_p
) && target_p
!= client_p
&&
1470 !IsMe(target_p
) && (source_p
->flags
& FLAGS_KILLED
) == 0)
1472 sendto_one(target_p
, ":%s SQUIT %s :%s",
1473 get_id(from
, target_p
), get_id(source_p
, target_p
),
1477 if(has_id(source_p
))
1478 del_from_id_hash(source_p
->id
, source_p
);
1480 del_from_client_hash(source_p
->name
, source_p
);
1481 remove_client_from_list(source_p
);
1483 scache_split(source_p
->serv
->nameinfo
);
1486 #ifdef DEBUG_EXITED_CLIENTS
1487 rb_dlinkAddAlloc(source_p
, &dead_remote_list
);
1489 rb_dlinkAddAlloc(source_p
, &dead_list
);
1495 qs_server(struct Client
*client_p
, struct Client
*source_p
, struct Client
*from
,
1496 const char *comment
)
1498 if(source_p
->servptr
&& source_p
->servptr
->serv
)
1499 rb_dlinkDelete(&source_p
->lnode
, &source_p
->servptr
->serv
->servers
);
1503 rb_dlinkFindDestroy(source_p
, &global_serv_list
);
1505 if(has_id(source_p
))
1506 del_from_id_hash(source_p
->id
, source_p
);
1508 del_from_client_hash(source_p
->name
, source_p
);
1509 remove_client_from_list(source_p
);
1510 scache_split(source_p
->serv
->nameinfo
);
1513 rb_dlinkAddAlloc(source_p
, &dead_list
);
1518 exit_local_server(struct Client
*client_p
, struct Client
*source_p
, struct Client
*from
,
1519 const char *comment
)
1521 static char comment1
[(HOSTLEN
*2)+2];
1522 static char newcomment
[BUFSIZE
];
1523 unsigned int sendk
, recvk
;
1525 rb_dlinkDelete(&source_p
->localClient
->tnode
, &serv_list
);
1526 rb_dlinkFindDestroy(source_p
, &global_serv_list
);
1528 sendk
= source_p
->localClient
->sendK
;
1529 recvk
= source_p
->localClient
->receiveK
;
1531 /* Always show source here, so the server notices show
1532 * which side initiated the split -- jilles
1534 snprintf(newcomment
, sizeof(newcomment
), "by %s: %s",
1535 from
== source_p
? me
.name
: from
->name
, comment
);
1536 if (!IsIOError(source_p
))
1537 sendto_one(source_p
, "SQUIT %s :%s", use_id(source_p
),
1539 if(client_p
!= NULL
&& source_p
!= client_p
&& !IsIOError(source_p
))
1541 sendto_one(source_p
, "ERROR :Closing Link: 127.0.0.1 %s (%s)",
1542 source_p
->name
, comment
);
1545 if(source_p
->servptr
&& source_p
->servptr
->serv
)
1546 rb_dlinkDelete(&source_p
->lnode
, &source_p
->servptr
->serv
->servers
);
1551 close_connection(source_p
);
1553 if(ConfigServerHide
.flatten_links
)
1554 strcpy(comment1
, "*.net *.split");
1557 strcpy(comment1
, source_p
->servptr
->name
);
1558 strcat(comment1
, " ");
1559 strcat(comment1
, source_p
->name
);
1562 if(source_p
->serv
!= NULL
)
1563 remove_dependents(client_p
, source_p
, from
, IsPerson(from
) ? newcomment
: comment
, comment1
);
1565 sendto_realops_snomask(SNO_GENERAL
, L_ALL
, "%s was connected"
1566 " for %ld seconds. %d/%d sendK/recvK.",
1567 source_p
->name
, (long) rb_current_time() - source_p
->localClient
->firsttime
, sendk
, recvk
);
1569 ilog(L_SERVER
, "%s was connected for %ld seconds. %d/%d sendK/recvK.",
1570 source_p
->name
, (long) rb_current_time() - source_p
->localClient
->firsttime
, sendk
, recvk
);
1572 if(has_id(source_p
))
1573 del_from_id_hash(source_p
->id
, source_p
);
1575 del_from_client_hash(source_p
->name
, source_p
);
1576 remove_client_from_list(source_p
);
1577 scache_split(source_p
->serv
->nameinfo
);
1580 rb_dlinkAddAlloc(source_p
, &dead_list
);
1586 * This assumes IsPerson(source_p) == true && MyConnect(source_p) == true
1590 exit_local_client(struct Client
*client_p
, struct Client
*source_p
, struct Client
*from
,
1591 const char *comment
)
1593 unsigned long on_for
;
1596 exit_generic_client(client_p
, source_p
, from
, comment
);
1597 clear_monitor(source_p
);
1599 s_assert(IsPerson(source_p
));
1600 rb_dlinkDelete(&source_p
->localClient
->tnode
, &lclient_list
);
1601 rb_dlinkDelete(&source_p
->lnode
, &me
.serv
->users
);
1603 if(IsOper(source_p
))
1604 rb_dlinkFindDestroy(source_p
, &local_oper_list
);
1606 sendto_realops_snomask(SNO_CCONN
, L_ALL
,
1607 "Client exiting: %s (%s@%s) [%s] [%s]",
1609 source_p
->username
, source_p
->host
, comment
,
1610 show_ip(NULL
, source_p
) ? source_p
->sockhost
: "255.255.255.255");
1612 sendto_realops_snomask(SNO_CCONNEXT
, L_ALL
,
1613 "CLIEXIT %s %s %s %s 0 %s",
1614 source_p
->name
, source_p
->username
, source_p
->host
,
1615 show_ip(NULL
, source_p
) ? source_p
->sockhost
: "255.255.255.255",
1618 on_for
= rb_current_time() - source_p
->localClient
->firsttime
;
1620 ilog(L_USER
, "%s (%3lu:%02lu:%02lu): %s!%s@%s %s %d/%d",
1621 rb_ctime(rb_current_time(), tbuf
, sizeof(tbuf
)), on_for
/ 3600,
1622 (on_for
% 3600) / 60, on_for
% 60,
1623 source_p
->name
, source_p
->username
, source_p
->host
,
1625 source_p
->localClient
->sendK
, source_p
->localClient
->receiveK
);
1627 sendto_one(source_p
, "ERROR :Closing Link: %s (%s)", source_p
->host
, comment
);
1628 close_connection(source_p
);
1630 if((source_p
->flags
& FLAGS_KILLED
) == 0)
1632 sendto_server(client_p
, NULL
, CAP_TS6
, NOCAPS
,
1633 ":%s QUIT :%s", use_id(source_p
), comment
);
1637 rb_dlinkAddAlloc(source_p
, &dead_list
);
1638 return(CLIENT_EXITED
);
1643 ** exit_client - This is old "m_bye". Name changed, because this is not a
1644 ** protocol function, but a general server utility function.
1646 ** This function exits a client of *any* type (user, server, etc)
1647 ** from this server. Also, this generates all necessary prototol
1648 ** messages that this exit may cause.
1650 ** 1) If the client is a local client, then this implicitly
1651 ** exits all other clients depending on this connection (e.g.
1652 ** remote clients having 'from'-field that points to this.
1654 ** 2) If the client is a remote client, then only this is exited.
1656 ** For convenience, this function returns a suitable value for
1657 ** m_function return value:
1659 ** CLIENT_EXITED if (client_p == source_p)
1660 ** 0 if (client_p != source_p)
1663 exit_client(struct Client
*client_p
, /* The local client originating the
1664 * exit or NULL, if this exit is
1665 * generated by this server for
1667 * This will not get any of the
1668 * generated messages. */
1669 struct Client
*source_p
, /* Client exiting */
1670 struct Client
*from
, /* Client firing off this Exit,
1672 const char *comment
/* Reason for the exit */
1677 hook_data_client_exit hdata
;
1678 if(IsClosing(source_p
))
1681 /* note, this HAS to be here, when we exit a client we attempt to
1682 * send them data, if this generates a write error we must *not* add
1683 * them to the abort list --fl
1685 SetClosing(source_p
);
1687 hdata
.local_link
= client_p
;
1688 hdata
.target
= source_p
;
1690 hdata
.comment
= comment
;
1691 call_hook(h_client_exit
, &hdata
);
1693 if(MyConnect(source_p
))
1695 /* Local clients of various types */
1696 if(IsPerson(source_p
))
1697 ret
= exit_local_client(client_p
, source_p
, from
, comment
);
1698 else if(IsServer(source_p
))
1699 ret
= exit_local_server(client_p
, source_p
, from
, comment
);
1700 /* IsUnknown || IsConnecting || IsHandShake */
1701 else if(!IsReject(source_p
))
1702 ret
= exit_unknown_client(client_p
, source_p
, from
, comment
);
1707 if(IsPerson(source_p
))
1708 ret
= exit_remote_client(client_p
, source_p
, from
, comment
);
1709 else if(IsServer(source_p
))
1710 ret
= exit_remote_server(client_p
, source_p
, from
, comment
);
1713 call_hook(h_after_client_exit
, NULL
);
1719 * Count up local client memory
1722 /* XXX one common Client list now */
1724 count_local_client_memory(size_t * count
, size_t * local_client_memory_used
)
1727 rb_bh_usage(lclient_heap
, count
, NULL
, &lusage
, NULL
);
1728 *local_client_memory_used
= lusage
+ (*count
* (sizeof(void *) + sizeof(struct Client
)));
1732 * Count up remote client memory
1735 count_remote_client_memory(size_t * count
, size_t * remote_client_memory_used
)
1737 size_t lcount
, rcount
;
1738 rb_bh_usage(lclient_heap
, &lcount
, NULL
, NULL
, NULL
);
1739 rb_bh_usage(client_heap
, &rcount
, NULL
, NULL
, NULL
);
1740 *count
= rcount
- lcount
;
1741 *remote_client_memory_used
= *count
* (sizeof(void *) + sizeof(struct Client
));
1746 * accept processing, this adds a form of "caller ID" to ircd
1748 * If a client puts themselves into "caller ID only" mode,
1749 * only clients that match a client pointer they have put on
1750 * the accept list will be allowed to message them.
1752 * [ source.on_allow_list ] -> [ target1 ] -> [ target2 ]
1754 * [target.allow_list] -> [ source1 ] -> [source2 ]
1756 * i.e. a target will have a link list of source pointers it will allow
1757 * each source client then has a back pointer pointing back
1758 * to the client that has it on its accept list.
1759 * This allows for exit_one_client to remove these now bogus entries
1760 * from any client having an accept on them.
1765 * inputs - pointer to exiting client
1767 * side effects - Walk through given clients allow_list and on_allow_list
1768 * remove all references to this client
1771 del_all_accepts(struct Client
*client_p
)
1774 rb_dlink_node
*next_ptr
;
1775 struct Client
*target_p
;
1777 if(MyClient(client_p
) && client_p
->localClient
->allow_list
.head
)
1779 /* clear this clients accept list, and remove them from
1780 * everyones on_accept_list
1782 RB_DLINK_FOREACH_SAFE(ptr
, next_ptr
, client_p
->localClient
->allow_list
.head
)
1784 target_p
= ptr
->data
;
1785 rb_dlinkFindDestroy(client_p
, &target_p
->on_allow_list
);
1786 rb_dlinkDestroy(ptr
, &client_p
->localClient
->allow_list
);
1790 /* remove this client from everyones accept list */
1791 RB_DLINK_FOREACH_SAFE(ptr
, next_ptr
, client_p
->on_allow_list
.head
)
1793 target_p
= ptr
->data
;
1794 rb_dlinkFindDestroy(client_p
, &target_p
->localClient
->allow_list
);
1795 rb_dlinkDestroy(ptr
, &client_p
->on_allow_list
);
1800 * show_ip() - asks if the true IP should be shown when source is
1801 * asking for info about target
1803 * Inputs - source_p who is asking
1804 * - target_p who do we want the info on
1805 * Output - returns 1 if clear IP can be shown, otherwise 0
1806 * Side Effects - none
1810 show_ip(struct Client
*source_p
, struct Client
*target_p
)
1812 if(IsAnyServer(target_p
))
1816 else if(IsIPSpoof(target_p
))
1818 /* source == NULL indicates message is being sent
1821 if(!ConfigFileEntry
.hide_spoof_ips
&&
1822 (source_p
== NULL
|| MyOper(source_p
)))
1826 else if(IsDynSpoof(target_p
) && (source_p
!= NULL
&& !IsOper(source_p
)))
1833 show_ip_conf(struct ConfItem
*aconf
, struct Client
*source_p
)
1835 if(IsConfDoSpoofIp(aconf
))
1837 if(!ConfigFileEntry
.hide_spoof_ips
&& MyOper(source_p
))
1847 show_ip_whowas(struct Whowas
*whowas
, struct Client
*source_p
)
1849 if(whowas
->flags
& WHOWAS_IP_SPOOFING
)
1850 if(ConfigFileEntry
.hide_spoof_ips
|| !MyOper(source_p
))
1852 if(whowas
->flags
& WHOWAS_DYNSPOOF
)
1853 if(!IsOper(source_p
))
1861 * inputs - pointer to client struct
1862 * output - pointer to struct User
1863 * side effects - add's an User information block to a client
1864 * if it was not previously allocated.
1867 make_user(struct Client
*client_p
)
1871 user
= client_p
->user
;
1874 user
= (struct User
*) rb_bh_alloc(user_heap
);
1876 client_p
->user
= user
;
1884 * inputs - pointer to client struct
1885 * output - pointer to server_t
1886 * side effects - add's an Server information block to a client
1887 * if it was not previously allocated.
1890 make_server(struct Client
*client_p
)
1892 struct Server
*serv
= client_p
->serv
;
1896 serv
= (struct Server
*) rb_malloc(sizeof(struct Server
));
1897 client_p
->serv
= serv
;
1899 return client_p
->serv
;
1905 * inputs - pointer to user struct
1906 * - pointer to client struct
1908 * side effects - Decrease user reference count by one and release block,
1909 * if count reaches 0
1912 free_user(struct User
*user
, struct Client
*client_p
)
1914 free_away(client_p
);
1916 if(--user
->refcnt
<= 0)
1919 rb_free((char *) user
->away
);
1920 rb_free(user
->opername
);
1922 privilegeset_unref(user
->privset
);
1926 if(user
->refcnt
< 0 || user
->invited
.head
|| user
->channel
.head
)
1928 sendto_realops_snomask(SNO_GENERAL
, L_ALL
,
1929 "* %p user (%s!%s@%s) %p %p %p %lu %d *",
1931 client_p
? client_p
->
1938 rb_dlink_list_length(&user
->channel
),
1940 s_assert(!user
->refcnt
);
1941 s_assert(!user
->invited
.head
);
1942 s_assert(!user
->channel
.head
);
1945 rb_bh_free(user_heap
, user
);
1950 allocate_away(struct Client
*client_p
)
1952 if(client_p
->user
->away
== NULL
)
1953 client_p
->user
->away
= rb_bh_alloc(away_heap
);
1958 free_away(struct Client
*client_p
)
1960 if(client_p
->user
!= NULL
&& client_p
->user
->away
!= NULL
) {
1961 rb_bh_free(away_heap
, client_p
->user
->away
);
1962 client_p
->user
->away
= NULL
;
1971 for(i
= 0; i
< 3; i
++)
1972 current_uid
[i
] = me
.id
[i
];
1974 for(i
= 3; i
< 9; i
++)
1975 current_uid
[i
] = 'A';
1977 current_uid
[9] = '\0';
1984 static int flipped
= 0;
1988 for(i
= 8; i
> 3; i
--)
1990 if(current_uid
[i
] == 'Z')
1992 current_uid
[i
] = '0';
1995 else if(current_uid
[i
] != '9')
2001 current_uid
[i
] = 'A';
2004 /* if this next if() triggers, we're fucked. */
2005 if(current_uid
[3] == 'Z')
2007 current_uid
[i
] = 'A';
2013 /* if this happens..well, i'm not sure what to say, but lets handle it correctly */
2014 if(rb_unlikely(flipped
))
2016 /* this slows down uid generation a bit... */
2017 if(find_id(current_uid
) != NULL
)
2025 * Close the physical connection. This function must make
2026 * MyConnect(client_p) == FALSE, and set client_p->from == NULL.
2029 close_connection(struct Client
*client_p
)
2031 s_assert(client_p
!= NULL
);
2032 if(client_p
== NULL
)
2035 s_assert(MyConnect(client_p
));
2036 if(!MyConnect(client_p
))
2039 if(IsServer(client_p
))
2041 struct server_conf
*server_p
;
2043 ServerStats
.is_sv
++;
2044 ServerStats
.is_sbs
+= client_p
->localClient
->sendB
;
2045 ServerStats
.is_sbr
+= client_p
->localClient
->receiveB
;
2046 ServerStats
.is_sti
+= (unsigned long long)(rb_current_time() - client_p
->localClient
->firsttime
);
2049 * If the connection has been up for a long amount of time, schedule
2050 * a 'quick' reconnect, else reset the next-connect cycle.
2052 if((server_p
= find_server_conf(client_p
->name
)) != NULL
)
2055 * Reschedule a faster reconnect, if this was a automatically
2056 * connected configuration entry. (Note that if we have had
2057 * a rehash in between, the status has been changed to
2058 * CONF_ILLEGAL). But only do this if it was a "good" link.
2060 server_p
->hold
= time(NULL
);
2062 (server_p
->hold
- client_p
->localClient
->lasttime
>
2063 HANGONGOODLINK
) ? HANGONRETRYDELAY
: ConFreq(server_p
->class);
2067 else if(IsClient(client_p
))
2069 ServerStats
.is_cl
++;
2070 ServerStats
.is_cbs
+= client_p
->localClient
->sendB
;
2071 ServerStats
.is_cbr
+= client_p
->localClient
->receiveB
;
2072 ServerStats
.is_cti
+= (unsigned long long)(rb_current_time() - client_p
->localClient
->firsttime
);
2075 ServerStats
.is_ni
++;
2077 client_release_connids(client_p
);
2079 if(client_p
->localClient
->F
!= NULL
)
2081 /* attempt to flush any pending dbufs. Evil, but .. -- adrian */
2082 if(!IsIOError(client_p
))
2083 send_queued(client_p
);
2085 rb_close(client_p
->localClient
->F
);
2086 client_p
->localClient
->F
= NULL
;
2089 rb_linebuf_donebuf(&client_p
->localClient
->buf_sendq
);
2090 rb_linebuf_donebuf(&client_p
->localClient
->buf_recvq
);
2091 detach_conf(client_p
);
2093 /* XXX shouldnt really be done here. */
2094 detach_server_conf(client_p
);
2096 client_p
->from
= NULL
; /* ...this should catch them! >:) --msa */
2097 ClearMyConnect(client_p
);
2098 SetIOError(client_p
);
2104 error_exit_client(struct Client
*client_p
, int error
)
2107 * ...hmm, with non-blocking sockets we might get
2108 * here from quite valid reasons, although.. why
2109 * would select report "data available" when there
2110 * wasn't... so, this must be an error anyway... --msa
2111 * actually, EOF occurs when read() returns 0 and
2112 * in due course, select() returns that fd as ready
2113 * for reading even though it ends up being an EOF. -avalon
2116 int current_error
= rb_get_sockerr(client_p
->localClient
->F
);
2118 SetIOError(client_p
);
2120 if(IsServer(client_p
) || IsHandshake(client_p
))
2124 sendto_realops_snomask(SNO_GENERAL
, is_remote_connect(client_p
) && !IsServer(client_p
) ? L_NETWIDE
: L_ALL
,
2125 "Server %s closed the connection",
2128 ilog(L_SERVER
, "Server %s closed the connection",
2129 log_client_name(client_p
, SHOW_IP
));
2133 sendto_realops_snomask(SNO_GENERAL
, is_remote_connect(client_p
) && !IsServer(client_p
) ? L_NETWIDE
: L_ALL
,
2134 "Lost connection to %s: %s",
2135 client_p
->name
, strerror(current_error
));
2136 ilog(L_SERVER
, "Lost connection to %s: %s",
2137 log_client_name(client_p
, SHOW_IP
), strerror(current_error
));
2142 rb_strlcpy(errmsg
, "Remote host closed the connection", sizeof(errmsg
));
2144 snprintf(errmsg
, sizeof(errmsg
), "Read error: %s", strerror(current_error
));
2146 exit_client(client_p
, client_p
, &me
, errmsg
);