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
->opername
);
304 rb_free(client_p
->localClient
->mangledhost
);
305 if (client_p
->localClient
->privset
)
306 privilegeset_unref(client_p
->localClient
->privset
);
309 ssld_decrement_clicount(client_p
->localClient
->ssl_ctl
);
311 rb_free(client_p
->localClient
->cipher_string
);
313 if (IsCapable(client_p
, CAP_ZIP
))
314 ssld_decrement_clicount(client_p
->localClient
->z_ctl
);
316 rb_free(client_p
->localClient
->zipstats
);
318 if (client_p
->localClient
->ws_ctl
!= NULL
)
319 wsockd_decrement_clicount(client_p
->localClient
->ws_ctl
);
321 rb_bh_free(lclient_heap
, client_p
->localClient
);
322 client_p
->localClient
= NULL
;
326 free_client(struct Client
*client_p
)
328 s_assert(NULL
!= client_p
);
329 s_assert(&me
!= client_p
);
330 free_local_client(client_p
);
331 free_pre_client(client_p
);
332 rb_free(client_p
->certfp
);
333 rb_bh_free(client_heap
, client_p
);
337 * check_pings - go through the local client list and check activity
338 * kill off stuff that should die
340 * inputs - NOT USED (from event)
341 * output - next time_t when check_pings() should be called again
345 * A PING can be sent to clients as necessary.
347 * Client/Server ping outs are handled.
351 * Addon from adrian. We used to call this after nextping seconds,
352 * however I've changed it to run once a second. This is only for
353 * PING timeouts, not K/etc-line checks (thanks dianora!). Having it
354 * run once a second makes life a lot easier - when a new client connects
355 * and they need a ping in 4 seconds, if nextping was set to 20 seconds
356 * we end up waiting 20 seconds. This is stupid. :-)
357 * I will optimise (hah!) check_pings() once I've finished working on
358 * tidying up other network IO evilnesses.
363 check_pings(void *notused
)
365 check_pings_list(&lclient_list
);
366 check_pings_list(&serv_list
);
367 check_unknowns_list(&unknown_list
);
373 * inputs - pointer to list to check
378 check_pings_list(rb_dlink_list
* list
)
380 char scratch
[32]; /* way too generous but... */
381 struct Client
*client_p
; /* current local client_p being examined */
382 int ping
= 0; /* ping time value from client */
383 rb_dlink_node
*ptr
, *next_ptr
;
385 RB_DLINK_FOREACH_SAFE(ptr
, next_ptr
, list
->head
)
387 client_p
= ptr
->data
;
389 if(!MyConnect(client_p
) || IsDead(client_p
))
392 ping
= get_client_ping(client_p
);
394 if(ping
< (rb_current_time() - client_p
->localClient
->lasttime
))
397 * If the client/server hasnt talked to us in 2*ping seconds
398 * and it has a ping time, then close its connection.
400 if(((rb_current_time() - client_p
->localClient
->lasttime
) >= (2 * ping
)
401 && (client_p
->flags
& FLAGS_PINGSENT
)))
403 if(IsServer(client_p
))
405 sendto_realops_snomask(SNO_GENERAL
, L_ALL
,
406 "No response from %s, closing link",
409 "No response from %s, closing link",
410 log_client_name(client_p
, HIDE_IP
));
412 (void) snprintf(scratch
, sizeof(scratch
),
413 "Ping timeout: %d seconds",
414 (int) (rb_current_time() - client_p
->localClient
->lasttime
));
416 exit_client(client_p
, client_p
, &me
, scratch
);
419 else if((client_p
->flags
& FLAGS_PINGSENT
) == 0)
422 * if we havent PINGed the connection and we havent
423 * heard from it in a while, PING it to make sure
426 client_p
->flags
|= FLAGS_PINGSENT
;
427 /* not nice but does the job */
428 client_p
->localClient
->lasttime
= rb_current_time() - ping
;
429 sendto_one(client_p
, "PING :%s", me
.name
);
438 * check_unknowns_list
440 * inputs - pointer to list of unknown clients
442 * side effects - unknown clients get marked for termination after n seconds
445 check_unknowns_list(rb_dlink_list
* list
)
447 rb_dlink_node
*ptr
, *next_ptr
;
448 struct Client
*client_p
;
451 RB_DLINK_FOREACH_SAFE(ptr
, next_ptr
, list
->head
)
453 client_p
= ptr
->data
;
455 if(IsDead(client_p
) || IsClosing(client_p
))
458 /* Still querying with authd */
459 if(client_p
->preClient
!= NULL
&& client_p
->preClient
->auth
.cid
!= 0)
463 * Check UNKNOWN connections - if they have been in this state
464 * for > 30s, close them.
467 timeout
= IsAnyServer(client_p
) ? ConfigFileEntry
.connect_timeout
: 30;
468 if((rb_current_time() - client_p
->localClient
->firsttime
) > timeout
)
470 if(IsAnyServer(client_p
))
472 sendto_realops_snomask(SNO_GENERAL
, is_remote_connect(client_p
) ? L_NETWIDE
: L_ALL
,
473 "No response from %s, closing link",
476 "No response from %s, closing link",
477 log_client_name(client_p
, HIDE_IP
));
479 exit_client(client_p
, client_p
, &me
, "Connection timed out");
485 notify_banned_client(struct Client
*client_p
, struct ConfItem
*aconf
, int ban
)
487 static const char conn_closed
[] = "Connection closed";
488 static const char d_lined
[] = "D-lined";
489 static const char k_lined
[] = "K-lined";
490 const char *reason
= NULL
;
491 const char *exit_reason
= conn_closed
;
493 if(ConfigFileEntry
.kline_with_reason
)
495 reason
= get_user_ban_reason(aconf
);
496 exit_reason
= reason
;
500 reason
= aconf
->status
== D_LINED
? d_lined
: k_lined
;
503 if(ban
== D_LINED
&& !IsPerson(client_p
))
504 sendto_one(client_p
, "NOTICE DLINE :*** You have been D-lined");
506 sendto_one(client_p
, form_str(ERR_YOUREBANNEDCREEP
),
507 me
.name
, client_p
->name
, reason
);
509 exit_client(client_p
, client_p
, &me
,
510 EmptyString(ConfigFileEntry
.kline_reason
) ? exit_reason
:
511 ConfigFileEntry
.kline_reason
);
518 * side effects - Check all connections for a pending k/dline against the
519 * client, exit the client if found.
522 check_banned_lines(void)
533 * side effects - all clients will be checked for klines
538 struct Client
*client_p
;
539 struct ConfItem
*aconf
;
541 rb_dlink_node
*next_ptr
;
543 RB_DLINK_FOREACH_SAFE(ptr
, next_ptr
, lclient_list
.head
)
545 client_p
= ptr
->data
;
547 if(IsMe(client_p
) || !IsPerson(client_p
))
550 if((aconf
= find_kline(client_p
)) != NULL
)
552 if(IsExemptKline(client_p
))
554 sendto_realops_snomask(SNO_GENERAL
, L_ALL
,
555 "KLINE over-ruled for %s, client is kline_exempt [%s@%s]",
556 get_client_name(client_p
, HIDE_IP
),
557 aconf
->user
, aconf
->host
);
561 sendto_realops_snomask(SNO_GENERAL
, L_ALL
,
562 "KLINE active for %s",
563 get_client_name(client_p
, HIDE_IP
));
565 notify_banned_client(client_p
, aconf
, K_LINED
);
574 * inputs - pointer to kline to check
576 * side effects - all clients will be checked against given kline
579 check_one_kline(struct ConfItem
*kline
)
581 struct Client
*client_p
;
583 rb_dlink_node
*next_ptr
;
585 RB_DLINK_FOREACH_SAFE(ptr
, next_ptr
, lclient_list
.head
)
587 client_p
= ptr
->data
;
589 if(IsMe(client_p
) || !IsPerson(client_p
))
592 if(!match(kline
->user
, client_p
->username
))
595 /* match one kline */
600 struct rb_sockaddr_storage sockaddr
;
602 masktype
= parse_netmask(kline
->host
, (struct sockaddr
*)&sockaddr
, &bits
);
607 if(comp_with_mask_sock((struct sockaddr
*)&client_p
->localClient
->ip
,
608 (struct sockaddr
*)&sockaddr
, bits
))
611 if (match(kline
->host
, client_p
->orighost
))
619 if(IsExemptKline(client_p
))
621 sendto_realops_snomask(SNO_GENERAL
, L_NETWIDE
,
622 "KLINE over-ruled for %s, client is kline_exempt [%s@%s]",
623 get_client_name(client_p
, HIDE_IP
),
624 kline
->user
, kline
->host
);
628 sendto_realops_snomask(SNO_GENERAL
, L_ALL
,
629 "KLINE active for %s",
630 get_client_name(client_p
, HIDE_IP
));
632 notify_banned_client(client_p
, kline
, K_LINED
);
641 * side effects - all clients will be checked for dlines
646 struct Client
*client_p
;
647 struct ConfItem
*aconf
;
649 rb_dlink_node
*next_ptr
;
651 RB_DLINK_FOREACH_SAFE(ptr
, next_ptr
, lclient_list
.head
)
653 client_p
= ptr
->data
;
658 if((aconf
= find_dline((struct sockaddr
*)&client_p
->localClient
->ip
, GET_SS_FAMILY(&client_p
->localClient
->ip
))) != NULL
)
660 if(aconf
->status
& CONF_EXEMPTDLINE
)
663 sendto_realops_snomask(SNO_GENERAL
, L_ALL
,
664 "DLINE active for %s",
665 get_client_name(client_p
, HIDE_IP
));
667 notify_banned_client(client_p
, aconf
, D_LINED
);
672 /* dlines need to be checked against unknowns too */
673 RB_DLINK_FOREACH_SAFE(ptr
, next_ptr
, unknown_list
.head
)
675 client_p
= ptr
->data
;
677 if((aconf
= find_dline((struct sockaddr
*)&client_p
->localClient
->ip
, GET_SS_FAMILY(&client_p
->localClient
->ip
))) != NULL
)
679 if(aconf
->status
& CONF_EXEMPTDLINE
)
682 notify_banned_client(client_p
, aconf
, D_LINED
);
691 * side effects - all clients will be checked for xlines
696 struct Client
*client_p
;
697 struct ConfItem
*aconf
;
699 rb_dlink_node
*next_ptr
;
701 RB_DLINK_FOREACH_SAFE(ptr
, next_ptr
, lclient_list
.head
)
703 client_p
= ptr
->data
;
705 if(IsMe(client_p
) || !IsPerson(client_p
))
708 if((aconf
= find_xline(client_p
->info
, 1)) != NULL
)
710 if(IsExemptKline(client_p
))
712 sendto_realops_snomask(SNO_GENERAL
, L_ALL
,
713 "XLINE over-ruled for %s, client is kline_exempt [%s]",
714 get_client_name(client_p
, HIDE_IP
),
719 sendto_realops_snomask(SNO_GENERAL
, L_ALL
, "XLINE active for %s",
720 get_client_name(client_p
, HIDE_IP
));
722 (void) exit_client(client_p
, client_p
, &me
, "Bad user info");
730 * inputs - resv, reason, time
732 * side effects - all local clients matching resv will be FNC'd
735 resv_nick_fnc(const char *mask
, const char *reason
, int temp_time
)
737 struct Client
*client_p
, *target_p
;
739 rb_dlink_node
*next_ptr
;
741 char note
[NICKLEN
+10];
743 if (!ConfigFileEntry
.resv_fnc
)
746 RB_DLINK_FOREACH_SAFE(ptr
, next_ptr
, lclient_list
.head
)
748 client_p
= ptr
->data
;
750 if(IsMe(client_p
) || !IsPerson(client_p
) || IsExemptResv(client_p
))
753 /* Skip users that already have UID nicks. */
754 if(IsDigit(client_p
->name
[0]))
757 if(match_esc(mask
, client_p
->name
))
762 sendto_realops_snomask(SNO_GENERAL
, L_ALL
,
763 "RESV forced nick change for %s!%s@%s to %s; nick matched [%s] (%s)",
764 client_p
->name
, client_p
->username
, client_p
->host
, nick
, mask
, reason
);
766 sendto_realops_snomask(SNO_NCHANGE
, L_ALL
,
767 "Nick change: From %s to %s [%s@%s]",
768 client_p
->name
, nick
, client_p
->username
, client_p
->host
);
773 sendto_one_notice(client_p
,
774 ":*** Nick %s is temporarily unavailable on this server.",
779 sendto_one_notice(client_p
,
780 ":*** Nick %s is no longer available on this server.",
784 /* Do all of the nick-changing gymnastics. */
785 client_p
->tsinfo
= rb_current_time();
786 whowas_add_history(client_p
, 1);
788 monitor_signoff(client_p
);
790 invalidate_bancache_user(client_p
);
792 sendto_common_channels_local(client_p
, NOCAPS
, NOCAPS
, ":%s!%s@%s NICK :%s",
793 client_p
->name
, client_p
->username
, client_p
->host
, nick
);
794 sendto_server(client_p
, NULL
, CAP_TS6
, NOCAPS
, ":%s NICK %s :%ld",
795 use_id(client_p
), nick
, (long) client_p
->tsinfo
);
797 del_from_client_hash(client_p
->name
, client_p
);
798 rb_strlcpy(client_p
->name
, nick
, sizeof(client_p
->name
));
799 add_to_client_hash(nick
, client_p
);
801 monitor_signon(client_p
);
803 RB_DLINK_FOREACH_SAFE(ptr
, next_ptr
, client_p
->on_allow_list
.head
)
805 target_p
= ptr
->data
;
806 rb_dlinkFindDestroy(client_p
, &target_p
->localClient
->allow_list
);
807 rb_dlinkDestroy(ptr
, &client_p
->on_allow_list
);
810 snprintf(note
, sizeof(note
), "Nick: %s", nick
);
811 rb_note(client_p
->localClient
->F
, note
);
817 * update_client_exit_stats
819 * input - pointer to client
824 update_client_exit_stats(struct Client
*client_p
)
826 if(IsServer(client_p
))
828 sendto_realops_snomask(SNO_EXTERNAL
, L_ALL
,
829 "Server %s split from %s",
830 client_p
->name
, client_p
->servptr
->name
);
831 if(HasSentEob(client_p
))
834 else if(IsClient(client_p
))
839 if(IsInvisible(client_p
))
843 if(splitchecking
&& !splitmode
)
844 check_splitmode(NULL
);
848 * release_client_state
850 * input - pointer to client to release
855 release_client_state(struct Client
*client_p
)
857 if(client_p
->user
!= NULL
)
859 free_user(client_p
->user
, client_p
); /* try this here */
863 if(client_p
->serv
->user
!= NULL
)
864 free_user(client_p
->serv
->user
, client_p
);
865 if(client_p
->serv
->fullcaps
)
866 rb_free(client_p
->serv
->fullcaps
);
867 rb_free(client_p
->serv
);
872 * remove_client_from_list
873 * inputs - point to client to remove
875 * side effects - taken the code from ExitOneClient() for this
876 * and placed it here. - avalon
879 remove_client_from_list(struct Client
*client_p
)
881 s_assert(NULL
!= client_p
);
886 /* A client made with make_client()
887 * is on the unknown_list until removed.
888 * If it =does= happen to exit before its removed from that list
889 * and its =not= on the global_client_list, it will core here.
890 * short circuit that case now -db
892 if(client_p
->node
.prev
== NULL
&& client_p
->node
.next
== NULL
)
895 rb_dlinkDelete(&client_p
->node
, &global_client_list
);
897 update_client_exit_stats(client_p
);
903 * input - nickname to check, flag for nick from local client
904 * output - 0 if erroneous, else 1
908 clean_nick(const char *nick
, int loc_client
)
912 /* nicks cant start with a digit or -, and must have a length */
913 if(*nick
== '-' || *nick
== '\0')
916 if(loc_client
&& IsDigit(*nick
))
922 if(!IsNickChar(*nick
))
927 if(len
>= NICKLEN
&& (unsigned int)len
>= ConfigFileEntry
.nicklen
)
934 * find_person - find person by (nick)name.
935 * inputs - pointer to name
936 * output - return client pointer
940 find_person(const char *name
)
942 struct Client
*c2ptr
;
944 c2ptr
= find_client(name
);
946 if(c2ptr
&& IsPerson(c2ptr
))
952 find_named_person(const char *name
)
954 struct Client
*c2ptr
;
956 c2ptr
= find_named_client(name
);
958 if(c2ptr
&& IsPerson(c2ptr
))
965 * find_chasing - find the client structure for a nick name (user)
966 * using history mechanism if necessary. If the client is not found,
967 * an error message (NO SUCH NICK) is generated. If the client was found
968 * through the history, chasing will be 1 and otherwise 0.
971 find_chasing(struct Client
*source_p
, const char *user
, int *chasing
)
975 if(MyClient(source_p
))
976 who
= find_named_person(user
);
978 who
= find_person(user
);
983 if(who
|| IsDigit(*user
))
986 if(!(who
= whowas_get_history(user
, (long) KILLCHASETIMELIMIT
)))
988 sendto_one_numeric(source_p
, ERR_NOSUCHNICK
,
989 form_str(ERR_NOSUCHNICK
), user
);
998 * get_client_name - Return the name of the client
999 * for various tracking and
1000 * admin purposes. The main purpose of this function is to
1001 * return the "socket host" name of the client, if that
1002 * differs from the advertised name (other than case).
1003 * But, this can be used to any client structure.
1006 * Watch out the allocation of "nbuf", if either source_p->name
1007 * or source_p->sockhost gets changed into pointers instead of
1008 * directly allocated within the structure...
1011 * Function return either a pointer to the structure (source_p) or
1012 * to internal buffer (nbuf). *NEVER* use the returned pointer
1013 * to modify what it points!!!
1017 get_client_name(struct Client
*client
, int showip
)
1019 static char nbuf
[HOSTLEN
* 2 + USERLEN
+ 5];
1021 s_assert(NULL
!= client
);
1025 if(MyConnect(client
))
1027 if(!irccmp(client
->name
, client
->host
))
1028 return client
->name
;
1030 if(ConfigFileEntry
.hide_spoof_ips
&&
1031 showip
== SHOW_IP
&& IsIPSpoof(client
))
1033 if(IsAnyServer(client
))
1036 /* And finally, let's get the host information, ip or name */
1040 snprintf(nbuf
, sizeof(nbuf
), "%s[%s@%s]",
1041 client
->name
, client
->username
,
1045 snprintf(nbuf
, sizeof(nbuf
), "%s[%s@255.255.255.255]",
1046 client
->name
, client
->username
);
1049 snprintf(nbuf
, sizeof(nbuf
), "%s[%s@%s]",
1050 client
->name
, client
->username
, client
->host
);
1055 /* As pointed out by Adel Mezibra
1056 * Neph|l|m@EFnet. Was missing a return here.
1058 return client
->name
;
1061 /* log_client_name()
1063 * This version is the same as get_client_name, but doesnt contain the
1064 * code that will hide IPs always. This should be used for logfiles.
1067 log_client_name(struct Client
*target_p
, int showip
)
1069 static char nbuf
[HOSTLEN
* 2 + USERLEN
+ 5];
1071 if(target_p
== NULL
)
1074 if(MyConnect(target_p
))
1076 if(irccmp(target_p
->name
, target_p
->host
) == 0)
1077 return target_p
->name
;
1082 snprintf(nbuf
, sizeof(nbuf
), "%s[%s@%s]", target_p
->name
,
1083 target_p
->username
, target_p
->sockhost
);
1087 snprintf(nbuf
, sizeof(nbuf
), "%s[%s@%s]", target_p
->name
,
1088 target_p
->username
, target_p
->host
);
1094 return target_p
->name
;
1097 /* is_remote_connect - Returns whether a server was /connect'ed by a remote
1098 * oper (send notices netwide) */
1100 is_remote_connect(struct Client
*client_p
)
1102 struct Client
*oper
;
1104 if (client_p
->serv
== NULL
)
1106 oper
= find_named_person(client_p
->serv
->by
);
1107 return oper
!= NULL
&& IsOper(oper
) && !MyConnect(oper
);
1111 free_exited_clients(void *unused
)
1113 rb_dlink_node
*ptr
, *next
;
1114 struct Client
*target_p
;
1116 RB_DLINK_FOREACH_SAFE(ptr
, next
, dead_list
.head
)
1118 target_p
= ptr
->data
;
1120 #ifdef DEBUG_EXITED_CLIENTS
1122 struct abort_client
*abt
;
1123 rb_dlink_node
*aptr
;
1126 RB_DLINK_FOREACH(aptr
, abort_list
.head
)
1129 if(abt
->client
== target_p
)
1132 sendto_realops_snomask(SNO_GENERAL
, L_ALL
,
1133 "On abort_list: %s stat: %u flags: %llu handler: %c",
1134 target_p
->name
, (unsigned int) target_p
->status
,
1135 (unsigned long long)target_p
->flags
, target_p
->handler
);
1136 sendto_realops_snomask(SNO_GENERAL
, L_ALL
,
1137 "Please report this to the charybdis developers!");
1144 rb_dlinkDestroy(ptr
, &dead_list
);
1150 if(ptr
->data
== NULL
)
1152 sendto_realops_snomask(SNO_GENERAL
, L_ALL
,
1153 "Warning: null client on dead_list!");
1154 rb_dlinkDestroy(ptr
, &dead_list
);
1157 release_client_state(target_p
);
1158 free_client(target_p
);
1159 rb_dlinkDestroy(ptr
, &dead_list
);
1162 #ifdef DEBUG_EXITED_CLIENTS
1163 RB_DLINK_FOREACH_SAFE(ptr
, next
, dead_remote_list
.head
)
1165 target_p
= ptr
->data
;
1167 if(ptr
->data
== NULL
)
1169 sendto_realops_snomask(SNO_GENERAL
, L_ALL
,
1170 "Warning: null client on dead_list!");
1171 rb_dlinkDestroy(ptr
, &dead_list
);
1174 release_client_state(target_p
);
1175 free_client(target_p
);
1176 rb_dlinkDestroy(ptr
, &dead_remote_list
);
1183 ** Remove all clients that depend on source_p; assumes all (S)QUITs have
1184 ** already been sent. we make sure to exit a server's dependent clients
1185 ** and servers before the server itself; exit_one_client takes care of
1186 ** actually removing things off llists. tweaked from +CSr31 -orabidoo
1189 * added sanity test code.... source_p->serv might be NULL...
1192 recurse_remove_clients(struct Client
*source_p
, const char *comment
)
1194 struct Client
*target_p
;
1195 rb_dlink_node
*ptr
, *ptr_next
;
1200 if(source_p
->serv
== NULL
) /* oooops. uh this is actually a major bug */
1203 /* this is very ugly, but it saves cpu :P */
1204 if(ConfigFileEntry
.nick_delay
> 0)
1206 RB_DLINK_FOREACH_SAFE(ptr
, ptr_next
, source_p
->serv
->users
.head
)
1208 target_p
= ptr
->data
;
1209 target_p
->flags
|= FLAGS_KILLED
;
1210 add_nd_entry(target_p
->name
);
1212 if(!IsDead(target_p
) && !IsClosing(target_p
))
1213 exit_remote_client(NULL
, target_p
, &me
, comment
);
1218 RB_DLINK_FOREACH_SAFE(ptr
, ptr_next
, source_p
->serv
->users
.head
)
1220 target_p
= ptr
->data
;
1221 target_p
->flags
|= FLAGS_KILLED
;
1223 if(!IsDead(target_p
) && !IsClosing(target_p
))
1224 exit_remote_client(NULL
, target_p
, &me
, comment
);
1228 RB_DLINK_FOREACH_SAFE(ptr
, ptr_next
, source_p
->serv
->servers
.head
)
1230 target_p
= ptr
->data
;
1231 recurse_remove_clients(target_p
, comment
);
1232 qs_server(NULL
, target_p
, &me
, comment
);
1237 ** Remove *everything* that depends on source_p, from all lists, and sending
1238 ** all necessary SQUITs. source_p itself is still on the lists,
1239 ** and its SQUITs have been sent except for the upstream one -orabidoo
1242 remove_dependents(struct Client
*client_p
,
1243 struct Client
*source_p
,
1244 struct Client
*from
, const char *comment
, const char *comment1
)
1247 rb_dlink_node
*ptr
, *next
;
1249 RB_DLINK_FOREACH_SAFE(ptr
, next
, serv_list
.head
)
1253 if(IsMe(to
) || to
== source_p
->from
|| to
== client_p
)
1256 sendto_one(to
, "SQUIT %s :%s", get_id(source_p
, to
), comment
);
1259 recurse_remove_clients(source_p
, comment1
);
1263 exit_aborted_clients(void *unused
)
1265 struct abort_client
*abt
;
1266 rb_dlink_node
*ptr
, *next
;
1267 RB_DLINK_FOREACH_SAFE(ptr
, next
, abort_list
.head
)
1271 #ifdef DEBUG_EXITED_CLIENTS
1273 if(rb_dlinkFind(abt
->client
, &dead_list
))
1276 sendto_realops_snomask(SNO_GENERAL
, L_ALL
,
1277 "On dead_list: %s stat: %u flags: %llu handler: %c",
1278 abt
->client
->name
, (unsigned int) abt
->client
->status
,
1279 (unsigned long long)abt
->client
->flags
, abt
->client
->handler
);
1280 sendto_realops_snomask(SNO_GENERAL
, L_ALL
,
1281 "Please report this to the charybdis developers!");
1287 s_assert(*((unsigned long*)abt
->client
) != 0xdeadbeef); /* This is lame but its a debug thing */
1288 rb_dlinkDelete(ptr
, &abort_list
);
1290 if(IsAnyServer(abt
->client
))
1291 sendto_realops_snomask(SNO_GENERAL
, L_ALL
,
1292 "Closing link to %s: %s",
1293 abt
->client
->name
, abt
->notice
);
1295 /* its no longer on abort list - we *must* remove
1296 * FLAGS_CLOSING otherwise exit_client() will not run --fl
1298 abt
->client
->flags
&= ~FLAGS_CLOSING
;
1299 exit_client(abt
->client
, abt
->client
, &me
, abt
->notice
);
1306 * dead_link - Adds client to a list of clients that need an exit_client()
1309 dead_link(struct Client
*client_p
, int sendqex
)
1311 struct abort_client
*abt
;
1313 s_assert(!IsMe(client_p
));
1314 if(IsDead(client_p
) || IsClosing(client_p
) || IsMe(client_p
))
1317 abt
= (struct abort_client
*) rb_malloc(sizeof(struct abort_client
));
1320 rb_strlcpy(abt
->notice
, "Max SendQ exceeded", sizeof(abt
->notice
));
1322 snprintf(abt
->notice
, sizeof(abt
->notice
), "Write error: %s", strerror(errno
));
1324 abt
->client
= client_p
;
1325 SetIOError(client_p
);
1327 SetClosing(client_p
);
1328 rb_dlinkAdd(abt
, &abt
->node
, &abort_list
);
1332 /* This does the remove of the user from channels..local or remote */
1334 exit_generic_client(struct Client
*client_p
, struct Client
*source_p
, struct Client
*from
,
1335 const char *comment
)
1337 rb_dlink_node
*ptr
, *next_ptr
;
1339 if(IsOper(source_p
))
1340 rb_dlinkFindDestroy(source_p
, &oper_list
);
1342 sendto_common_channels_local(source_p
, NOCAPS
, NOCAPS
, ":%s!%s@%s QUIT :%s",
1344 source_p
->username
, source_p
->host
, comment
);
1346 remove_user_from_channels(source_p
);
1348 /* Should not be in any channels now */
1349 s_assert(source_p
->user
->channel
.head
== NULL
);
1351 /* Clean up invitefield */
1352 RB_DLINK_FOREACH_SAFE(ptr
, next_ptr
, source_p
->user
->invited
.head
)
1354 del_invite(ptr
->data
, source_p
);
1357 /* Clean up allow lists */
1358 del_all_accepts(source_p
);
1360 whowas_add_history(source_p
, 0);
1361 whowas_off_history(source_p
);
1363 monitor_signoff(source_p
);
1365 if(has_id(source_p
))
1366 del_from_id_hash(source_p
->id
, source_p
);
1368 del_from_hostname_hash(source_p
->orighost
, source_p
);
1369 del_from_client_hash(source_p
->name
, source_p
);
1370 remove_client_from_list(source_p
);
1374 * Assumes IsPerson(source_p) && !MyConnect(source_p)
1378 exit_remote_client(struct Client
*client_p
, struct Client
*source_p
, struct Client
*from
,
1379 const char *comment
)
1381 exit_generic_client(client_p
, source_p
, from
, comment
);
1383 if(source_p
->servptr
&& source_p
->servptr
->serv
)
1385 rb_dlinkDelete(&source_p
->lnode
, &source_p
->servptr
->serv
->users
);
1388 if((source_p
->flags
& FLAGS_KILLED
) == 0)
1390 sendto_server(client_p
, NULL
, CAP_TS6
, NOCAPS
,
1391 ":%s QUIT :%s", use_id(source_p
), comment
);
1395 #ifdef DEBUG_EXITED_CLIENTS
1396 rb_dlinkAddAlloc(source_p
, &dead_remote_list
);
1398 rb_dlinkAddAlloc(source_p
, &dead_list
);
1400 return(CLIENT_EXITED
);
1404 * This assumes IsUnknown(source_p) == true and MyConnect(source_p) == true
1408 exit_unknown_client(struct Client
*client_p
, /* The local client originating the
1409 * exit or NULL, if this exit is
1410 * generated by this server for
1412 * This will not get any of the
1413 * generated messages. */
1414 struct Client
*source_p
, /* Client exiting */
1415 struct Client
*from
, /* Client firing off this Exit,
1417 const char *comment
)
1419 authd_abort_client(source_p
);
1420 rb_dlinkDelete(&source_p
->localClient
->tnode
, &unknown_list
);
1422 if(!IsIOError(source_p
))
1423 sendto_one(source_p
, "ERROR :Closing Link: %s (%s)",
1424 source_p
->user
!= NULL
? source_p
->host
: "127.0.0.1",
1427 close_connection(source_p
);
1429 if(has_id(source_p
))
1430 del_from_id_hash(source_p
->id
, source_p
);
1432 del_from_hostname_hash(source_p
->host
, source_p
);
1433 if (!IsAnyServer(source_p
))
1434 del_from_client_hash(source_p
->name
, source_p
);
1435 remove_client_from_list(source_p
);
1437 rb_dlinkAddAlloc(source_p
, &dead_list
);
1439 /* Note that we don't need to add unknowns to the dead_list */
1440 return(CLIENT_EXITED
);
1444 exit_remote_server(struct Client
*client_p
, struct Client
*source_p
, struct Client
*from
,
1445 const char *comment
)
1447 static char comment1
[(HOSTLEN
*2)+2];
1448 static char newcomment
[BUFSIZE
];
1449 struct Client
*target_p
;
1451 if(ConfigServerHide
.flatten_links
)
1452 strcpy(comment1
, "*.net *.split");
1455 strcpy(comment1
, source_p
->servptr
->name
);
1456 strcat(comment1
, " ");
1457 strcat(comment1
, source_p
->name
);
1460 snprintf(newcomment
, sizeof(newcomment
), "by %s: %s",
1461 from
->name
, comment
);
1463 remove_dependents(client_p
, source_p
, from
, IsPerson(from
) ? newcomment
: comment
, comment1
);
1465 rb_dlinkDelete(&source_p
->lnode
, &source_p
->servptr
->serv
->servers
);
1467 rb_dlinkFindDestroy(source_p
, &global_serv_list
);
1468 target_p
= source_p
->from
;
1470 if(target_p
!= NULL
&& IsServer(target_p
) && target_p
!= client_p
&&
1471 !IsMe(target_p
) && (source_p
->flags
& FLAGS_KILLED
) == 0)
1473 sendto_one(target_p
, ":%s SQUIT %s :%s",
1474 get_id(from
, target_p
), get_id(source_p
, target_p
),
1478 if(has_id(source_p
))
1479 del_from_id_hash(source_p
->id
, source_p
);
1481 del_from_client_hash(source_p
->name
, source_p
);
1482 remove_client_from_list(source_p
);
1484 scache_split(source_p
->serv
->nameinfo
);
1487 #ifdef DEBUG_EXITED_CLIENTS
1488 rb_dlinkAddAlloc(source_p
, &dead_remote_list
);
1490 rb_dlinkAddAlloc(source_p
, &dead_list
);
1496 qs_server(struct Client
*client_p
, struct Client
*source_p
, struct Client
*from
,
1497 const char *comment
)
1499 if(source_p
->servptr
&& source_p
->servptr
->serv
)
1500 rb_dlinkDelete(&source_p
->lnode
, &source_p
->servptr
->serv
->servers
);
1504 rb_dlinkFindDestroy(source_p
, &global_serv_list
);
1506 if(has_id(source_p
))
1507 del_from_id_hash(source_p
->id
, source_p
);
1509 del_from_client_hash(source_p
->name
, source_p
);
1510 remove_client_from_list(source_p
);
1511 scache_split(source_p
->serv
->nameinfo
);
1514 rb_dlinkAddAlloc(source_p
, &dead_list
);
1519 exit_local_server(struct Client
*client_p
, struct Client
*source_p
, struct Client
*from
,
1520 const char *comment
)
1522 static char comment1
[(HOSTLEN
*2)+2];
1523 static char newcomment
[BUFSIZE
];
1524 unsigned int sendk
, recvk
;
1526 rb_dlinkDelete(&source_p
->localClient
->tnode
, &serv_list
);
1527 rb_dlinkFindDestroy(source_p
, &global_serv_list
);
1529 sendk
= source_p
->localClient
->sendK
;
1530 recvk
= source_p
->localClient
->receiveK
;
1532 /* Always show source here, so the server notices show
1533 * which side initiated the split -- jilles
1535 snprintf(newcomment
, sizeof(newcomment
), "by %s: %s",
1536 from
== source_p
? me
.name
: from
->name
, comment
);
1537 if (!IsIOError(source_p
))
1538 sendto_one(source_p
, "SQUIT %s :%s", use_id(source_p
),
1540 if(client_p
!= NULL
&& source_p
!= client_p
&& !IsIOError(source_p
))
1542 sendto_one(source_p
, "ERROR :Closing Link: 127.0.0.1 %s (%s)",
1543 source_p
->name
, comment
);
1546 if(source_p
->servptr
&& source_p
->servptr
->serv
)
1547 rb_dlinkDelete(&source_p
->lnode
, &source_p
->servptr
->serv
->servers
);
1552 close_connection(source_p
);
1554 if(ConfigServerHide
.flatten_links
)
1555 strcpy(comment1
, "*.net *.split");
1558 strcpy(comment1
, source_p
->servptr
->name
);
1559 strcat(comment1
, " ");
1560 strcat(comment1
, source_p
->name
);
1563 if(source_p
->serv
!= NULL
)
1564 remove_dependents(client_p
, source_p
, from
, IsPerson(from
) ? newcomment
: comment
, comment1
);
1566 sendto_realops_snomask(SNO_GENERAL
, L_ALL
, "%s was connected"
1567 " for %ld seconds. %d/%d sendK/recvK.",
1568 source_p
->name
, (long) rb_current_time() - source_p
->localClient
->firsttime
, sendk
, recvk
);
1570 ilog(L_SERVER
, "%s was connected for %ld seconds. %d/%d sendK/recvK.",
1571 source_p
->name
, (long) rb_current_time() - source_p
->localClient
->firsttime
, sendk
, recvk
);
1573 if(has_id(source_p
))
1574 del_from_id_hash(source_p
->id
, source_p
);
1576 del_from_client_hash(source_p
->name
, source_p
);
1577 remove_client_from_list(source_p
);
1578 scache_split(source_p
->serv
->nameinfo
);
1581 rb_dlinkAddAlloc(source_p
, &dead_list
);
1587 * This assumes IsPerson(source_p) == true && MyConnect(source_p) == true
1591 exit_local_client(struct Client
*client_p
, struct Client
*source_p
, struct Client
*from
,
1592 const char *comment
)
1594 unsigned long on_for
;
1597 exit_generic_client(client_p
, source_p
, from
, comment
);
1598 clear_monitor(source_p
);
1600 s_assert(IsPerson(source_p
));
1601 rb_dlinkDelete(&source_p
->localClient
->tnode
, &lclient_list
);
1602 rb_dlinkDelete(&source_p
->lnode
, &me
.serv
->users
);
1604 if(IsOper(source_p
))
1605 rb_dlinkFindDestroy(source_p
, &local_oper_list
);
1607 sendto_realops_snomask(SNO_CCONN
, L_ALL
,
1608 "Client exiting: %s (%s@%s) [%s] [%s]",
1610 source_p
->username
, source_p
->host
, comment
,
1611 show_ip(NULL
, source_p
) ? source_p
->sockhost
: "255.255.255.255");
1613 sendto_realops_snomask(SNO_CCONNEXT
, L_ALL
,
1614 "CLIEXIT %s %s %s %s 0 %s",
1615 source_p
->name
, source_p
->username
, source_p
->host
,
1616 show_ip(NULL
, source_p
) ? source_p
->sockhost
: "255.255.255.255",
1619 on_for
= rb_current_time() - source_p
->localClient
->firsttime
;
1621 ilog(L_USER
, "%s (%3lu:%02lu:%02lu): %s!%s@%s %s %d/%d",
1622 rb_ctime(rb_current_time(), tbuf
, sizeof(tbuf
)), on_for
/ 3600,
1623 (on_for
% 3600) / 60, on_for
% 60,
1624 source_p
->name
, source_p
->username
, source_p
->host
,
1626 source_p
->localClient
->sendK
, source_p
->localClient
->receiveK
);
1628 sendto_one(source_p
, "ERROR :Closing Link: %s (%s)", source_p
->host
, comment
);
1629 close_connection(source_p
);
1631 if((source_p
->flags
& FLAGS_KILLED
) == 0)
1633 sendto_server(client_p
, NULL
, CAP_TS6
, NOCAPS
,
1634 ":%s QUIT :%s", use_id(source_p
), comment
);
1638 rb_dlinkAddAlloc(source_p
, &dead_list
);
1639 return(CLIENT_EXITED
);
1644 ** exit_client - This is old "m_bye". Name changed, because this is not a
1645 ** protocol function, but a general server utility function.
1647 ** This function exits a client of *any* type (user, server, etc)
1648 ** from this server. Also, this generates all necessary prototol
1649 ** messages that this exit may cause.
1651 ** 1) If the client is a local client, then this implicitly
1652 ** exits all other clients depending on this connection (e.g.
1653 ** remote clients having 'from'-field that points to this.
1655 ** 2) If the client is a remote client, then only this is exited.
1657 ** For convenience, this function returns a suitable value for
1658 ** m_function return value:
1660 ** CLIENT_EXITED if (client_p == source_p)
1661 ** 0 if (client_p != source_p)
1664 exit_client(struct Client
*client_p
, /* The local client originating the
1665 * exit or NULL, if this exit is
1666 * generated by this server for
1668 * This will not get any of the
1669 * generated messages. */
1670 struct Client
*source_p
, /* Client exiting */
1671 struct Client
*from
, /* Client firing off this Exit,
1673 const char *comment
/* Reason for the exit */
1678 hook_data_client_exit hdata
;
1679 if(IsClosing(source_p
))
1682 /* note, this HAS to be here, when we exit a client we attempt to
1683 * send them data, if this generates a write error we must *not* add
1684 * them to the abort list --fl
1686 SetClosing(source_p
);
1688 hdata
.local_link
= client_p
;
1689 hdata
.target
= source_p
;
1691 hdata
.comment
= comment
;
1692 call_hook(h_client_exit
, &hdata
);
1694 if(MyConnect(source_p
))
1696 /* Local clients of various types */
1697 if(IsPerson(source_p
))
1698 ret
= exit_local_client(client_p
, source_p
, from
, comment
);
1699 else if(IsServer(source_p
))
1700 ret
= exit_local_server(client_p
, source_p
, from
, comment
);
1701 /* IsUnknown || IsConnecting || IsHandShake */
1702 else if(!IsReject(source_p
))
1703 ret
= exit_unknown_client(client_p
, source_p
, from
, comment
);
1708 if(IsPerson(source_p
))
1709 ret
= exit_remote_client(client_p
, source_p
, from
, comment
);
1710 else if(IsServer(source_p
))
1711 ret
= exit_remote_server(client_p
, source_p
, from
, comment
);
1714 call_hook(h_after_client_exit
, NULL
);
1720 * Count up local client memory
1723 /* XXX one common Client list now */
1725 count_local_client_memory(size_t * count
, size_t * local_client_memory_used
)
1728 rb_bh_usage(lclient_heap
, count
, NULL
, &lusage
, NULL
);
1729 *local_client_memory_used
= lusage
+ (*count
* (sizeof(void *) + sizeof(struct Client
)));
1733 * Count up remote client memory
1736 count_remote_client_memory(size_t * count
, size_t * remote_client_memory_used
)
1738 size_t lcount
, rcount
;
1739 rb_bh_usage(lclient_heap
, &lcount
, NULL
, NULL
, NULL
);
1740 rb_bh_usage(client_heap
, &rcount
, NULL
, NULL
, NULL
);
1741 *count
= rcount
- lcount
;
1742 *remote_client_memory_used
= *count
* (sizeof(void *) + sizeof(struct Client
));
1747 * accept processing, this adds a form of "caller ID" to ircd
1749 * If a client puts themselves into "caller ID only" mode,
1750 * only clients that match a client pointer they have put on
1751 * the accept list will be allowed to message them.
1753 * [ source.on_allow_list ] -> [ target1 ] -> [ target2 ]
1755 * [target.allow_list] -> [ source1 ] -> [source2 ]
1757 * i.e. a target will have a link list of source pointers it will allow
1758 * each source client then has a back pointer pointing back
1759 * to the client that has it on its accept list.
1760 * This allows for exit_one_client to remove these now bogus entries
1761 * from any client having an accept on them.
1766 * inputs - pointer to exiting client
1768 * side effects - Walk through given clients allow_list and on_allow_list
1769 * remove all references to this client
1772 del_all_accepts(struct Client
*client_p
)
1775 rb_dlink_node
*next_ptr
;
1776 struct Client
*target_p
;
1778 if(MyClient(client_p
) && client_p
->localClient
->allow_list
.head
)
1780 /* clear this clients accept list, and remove them from
1781 * everyones on_accept_list
1783 RB_DLINK_FOREACH_SAFE(ptr
, next_ptr
, client_p
->localClient
->allow_list
.head
)
1785 target_p
= ptr
->data
;
1786 rb_dlinkFindDestroy(client_p
, &target_p
->on_allow_list
);
1787 rb_dlinkDestroy(ptr
, &client_p
->localClient
->allow_list
);
1791 /* remove this client from everyones accept list */
1792 RB_DLINK_FOREACH_SAFE(ptr
, next_ptr
, client_p
->on_allow_list
.head
)
1794 target_p
= ptr
->data
;
1795 rb_dlinkFindDestroy(client_p
, &target_p
->localClient
->allow_list
);
1796 rb_dlinkDestroy(ptr
, &client_p
->on_allow_list
);
1801 * show_ip() - asks if the true IP should be shown when source is
1802 * asking for info about target
1804 * Inputs - source_p who is asking
1805 * - target_p who do we want the info on
1806 * Output - returns 1 if clear IP can be shown, otherwise 0
1807 * Side Effects - none
1811 show_ip(struct Client
*source_p
, struct Client
*target_p
)
1813 if(IsAnyServer(target_p
))
1817 else if(IsIPSpoof(target_p
))
1819 /* source == NULL indicates message is being sent
1822 if(!ConfigFileEntry
.hide_spoof_ips
&&
1823 (source_p
== NULL
|| MyOper(source_p
)))
1827 else if(IsDynSpoof(target_p
) && (source_p
!= NULL
&& !IsOper(source_p
)))
1834 show_ip_conf(struct ConfItem
*aconf
, struct Client
*source_p
)
1836 if(IsConfDoSpoofIp(aconf
))
1838 if(!ConfigFileEntry
.hide_spoof_ips
&& MyOper(source_p
))
1848 show_ip_whowas(struct Whowas
*whowas
, struct Client
*source_p
)
1850 if(whowas
->flags
& WHOWAS_IP_SPOOFING
)
1851 if(ConfigFileEntry
.hide_spoof_ips
|| !MyOper(source_p
))
1853 if(whowas
->flags
& WHOWAS_DYNSPOOF
)
1854 if(!IsOper(source_p
))
1862 * inputs - pointer to client struct
1863 * output - pointer to struct User
1864 * side effects - add's an User information block to a client
1865 * if it was not previously allocated.
1868 make_user(struct Client
*client_p
)
1872 user
= client_p
->user
;
1875 user
= (struct User
*) rb_bh_alloc(user_heap
);
1877 client_p
->user
= user
;
1885 * inputs - pointer to client struct
1886 * output - pointer to server_t
1887 * side effects - add's an Server information block to a client
1888 * if it was not previously allocated.
1891 make_server(struct Client
*client_p
)
1893 struct Server
*serv
= client_p
->serv
;
1897 serv
= (struct Server
*) rb_malloc(sizeof(struct Server
));
1898 client_p
->serv
= serv
;
1900 return client_p
->serv
;
1906 * inputs - pointer to user struct
1907 * - pointer to client struct
1909 * side effects - Decrease user reference count by one and release block,
1910 * if count reaches 0
1913 free_user(struct User
*user
, struct Client
*client_p
)
1915 free_away(client_p
);
1917 if(--user
->refcnt
<= 0)
1920 rb_free((char *) user
->away
);
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
);