2 * Solanum: a slightly 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 Ariadne Conill <ariadne@dereferenced.org>
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 (client_p
->localClient
->ws_ctl
!= NULL
)
311 wsockd_decrement_clicount(client_p
->localClient
->ws_ctl
);
313 rb_bh_free(lclient_heap
, client_p
->localClient
);
314 client_p
->localClient
= NULL
;
318 free_client(struct Client
*client_p
)
320 s_assert(NULL
!= client_p
);
321 s_assert(&me
!= client_p
);
322 free_local_client(client_p
);
323 free_pre_client(client_p
);
324 rb_free(client_p
->certfp
);
325 rb_bh_free(client_heap
, client_p
);
329 * check_pings - go through the local client list and check activity
330 * kill off stuff that should die
332 * inputs - NOT USED (from event)
333 * output - next time_t when check_pings() should be called again
337 * A PING can be sent to clients as necessary.
339 * Client/Server ping outs are handled.
343 * Addon from adrian. We used to call this after nextping seconds,
344 * however I've changed it to run once a second. This is only for
345 * PING timeouts, not K/etc-line checks (thanks dianora!). Having it
346 * run once a second makes life a lot easier - when a new client connects
347 * and they need a ping in 4 seconds, if nextping was set to 20 seconds
348 * we end up waiting 20 seconds. This is stupid. :-)
349 * I will optimise (hah!) check_pings() once I've finished working on
350 * tidying up other network IO evilnesses.
355 check_pings(void *notused
)
357 check_pings_list(&lclient_list
);
358 check_pings_list(&serv_list
);
359 check_unknowns_list(&unknown_list
);
365 * inputs - pointer to list to check
370 check_pings_list(rb_dlink_list
* list
)
372 char scratch
[32]; /* way too generous but... */
373 struct Client
*client_p
; /* current local client_p being examined */
374 int ping
= 0; /* ping time value from client */
375 rb_dlink_node
*ptr
, *next_ptr
;
377 RB_DLINK_FOREACH_SAFE(ptr
, next_ptr
, list
->head
)
379 client_p
= ptr
->data
;
381 if(!MyConnect(client_p
) || IsDead(client_p
))
384 ping
= get_client_ping(client_p
);
386 if(ping
< (rb_current_time() - client_p
->localClient
->lasttime
))
389 * If the client/server hasnt talked to us in 2*ping seconds
390 * and it has a ping time, then close its connection.
392 if(((rb_current_time() - client_p
->localClient
->lasttime
) >= (2 * ping
)
393 && (client_p
->flags
& FLAGS_PINGSENT
)))
395 if(IsServer(client_p
))
397 sendto_realops_snomask(SNO_GENERAL
, L_NETWIDE
,
398 "No response from %s, closing link",
401 "No response from %s, closing link",
402 log_client_name(client_p
, HIDE_IP
));
404 (void) snprintf(scratch
, sizeof(scratch
),
405 "Ping timeout: %d seconds",
406 (int) (rb_current_time() - client_p
->localClient
->lasttime
));
408 exit_client(client_p
, client_p
, &me
, scratch
);
411 else if((client_p
->flags
& FLAGS_PINGSENT
) == 0)
414 * if we havent PINGed the connection and we havent
415 * heard from it in a while, PING it to make sure
418 client_p
->flags
|= FLAGS_PINGSENT
;
419 /* not nice but does the job */
420 client_p
->localClient
->lasttime
= rb_current_time() - ping
;
421 sendto_one(client_p
, "PING :%s", me
.name
);
430 * check_unknowns_list
432 * inputs - pointer to list of unknown clients
434 * side effects - unknown clients get marked for termination after n seconds
437 check_unknowns_list(rb_dlink_list
* list
)
439 rb_dlink_node
*ptr
, *next_ptr
;
440 struct Client
*client_p
;
443 RB_DLINK_FOREACH_SAFE(ptr
, next_ptr
, list
->head
)
445 client_p
= ptr
->data
;
447 if(IsDead(client_p
) || IsClosing(client_p
))
450 /* Still querying with authd */
451 if(client_p
->preClient
!= NULL
&& client_p
->preClient
->auth
.cid
!= 0)
455 * Check UNKNOWN connections - if they have been in this state
456 * for > 30s, close them.
459 timeout
= IsAnyServer(client_p
) ? ConfigFileEntry
.connect_timeout
: 30;
460 if((rb_current_time() - client_p
->localClient
->firsttime
) > timeout
)
462 if(IsAnyServer(client_p
))
464 sendto_realops_snomask(SNO_GENERAL
, L_NETWIDE
,
465 "No response from %s, closing link",
468 "No response from %s, closing link",
469 log_client_name(client_p
, HIDE_IP
));
471 exit_client(client_p
, client_p
, &me
, "Connection timed out");
477 notify_banned_client(struct Client
*client_p
, struct ConfItem
*aconf
, int ban
)
479 static const char conn_closed
[] = "Connection closed";
480 static const char d_lined
[] = "D-lined";
481 static const char k_lined
[] = "K-lined";
482 const char *reason
= NULL
;
483 const char *exit_reason
= conn_closed
;
485 if(ConfigFileEntry
.kline_with_reason
)
487 reason
= get_user_ban_reason(aconf
);
488 exit_reason
= reason
;
492 reason
= aconf
->status
== D_LINED
? d_lined
: k_lined
;
495 if(ban
== D_LINED
&& !IsPerson(client_p
))
496 sendto_one(client_p
, "NOTICE DLINE :*** You have been D-lined");
498 sendto_one(client_p
, form_str(ERR_YOUREBANNEDCREEP
),
499 me
.name
, client_p
->name
, reason
);
501 exit_client(client_p
, client_p
, &me
,
502 EmptyString(ConfigFileEntry
.kline_reason
) ? exit_reason
:
503 ConfigFileEntry
.kline_reason
);
510 * side effects - Check all connections for a pending k/dline against the
511 * client, exit the client if found.
514 check_banned_lines(void)
525 * side effects - all clients will be checked for klines
530 struct Client
*client_p
;
531 struct ConfItem
*aconf
;
533 rb_dlink_node
*next_ptr
;
535 RB_DLINK_FOREACH_SAFE(ptr
, next_ptr
, lclient_list
.head
)
537 client_p
= ptr
->data
;
539 if(IsMe(client_p
) || !IsPerson(client_p
))
542 if((aconf
= find_kline(client_p
)) != NULL
)
544 if(IsExemptKline(client_p
))
546 sendto_realops_snomask(SNO_GENERAL
, L_NETWIDE
,
547 "KLINE over-ruled for %s, client is kline_exempt [%s@%s]",
548 get_client_name(client_p
, HIDE_IP
),
549 aconf
->user
, aconf
->host
);
553 sendto_realops_snomask(SNO_GENERAL
, L_NETWIDE
,
554 "Disconnecting K-Lined user %s (%s@%s)",
555 get_client_name(client_p
, HIDE_IP
), aconf
->user
, aconf
->host
);
557 notify_banned_client(client_p
, aconf
, K_LINED
);
566 * This process needs to be kept in sync with find_kline() aka find_conf_by_address().
568 * inputs - pointer to kline to check
570 * side effects - all clients will be checked against given kline
573 check_one_kline(struct ConfItem
*kline
)
575 struct Client
*client_p
;
577 rb_dlink_node
*next_ptr
;
580 struct rb_sockaddr_storage sockaddr
;
581 struct sockaddr_in ip4
;
583 masktype
= parse_netmask(kline
->host
, (struct sockaddr_storage
*)&sockaddr
, &bits
);
585 RB_DLINK_FOREACH_SAFE(ptr
, next_ptr
, lclient_list
.head
)
589 client_p
= ptr
->data
;
591 if(IsMe(client_p
) || !IsPerson(client_p
))
594 if(!match(kline
->user
, client_p
->username
))
597 /* match one kline */
601 if (IsConfDoSpoofIp(client_p
->localClient
->att_conf
) &&
602 IsConfKlineSpoof(client_p
->localClient
->att_conf
))
604 if (client_p
->localClient
->ip
.ss_family
== AF_INET6
&& sockaddr
.ss_family
== AF_INET
&&
605 rb_ipv4_from_ipv6((struct sockaddr_in6
*)&client_p
->localClient
->ip
, &ip4
)
606 && comp_with_mask_sock((struct sockaddr
*)&ip4
, (struct sockaddr
*)&sockaddr
, bits
))
608 else if (client_p
->localClient
->ip
.ss_family
== sockaddr
.ss_family
&&
609 comp_with_mask_sock((struct sockaddr
*)&client_p
->localClient
->ip
,
610 (struct sockaddr
*)&sockaddr
, bits
))
614 if (match(kline
->host
, client_p
->orighost
))
616 if (IsConfDoSpoofIp(client_p
->localClient
->att_conf
) &&
617 IsConfKlineSpoof(client_p
->localClient
->att_conf
))
619 if (match(kline
->host
, client_p
->sockhost
))
627 if(IsExemptKline(client_p
))
629 sendto_realops_snomask(SNO_GENERAL
, L_NETWIDE
,
630 "KLINE over-ruled for %s, client is kline_exempt [%s@%s]",
631 get_client_name(client_p
, HIDE_IP
),
632 kline
->user
, kline
->host
);
636 sendto_realops_snomask(SNO_GENERAL
, L_NETWIDE
,
637 "Disconnecting K-Lined user %s (%s@%s)",
638 get_client_name(client_p
, HIDE_IP
), kline
->user
, kline
->host
);
640 notify_banned_client(client_p
, kline
, K_LINED
);
649 * side effects - all clients will be checked for dlines
654 struct Client
*client_p
;
655 struct ConfItem
*aconf
;
657 rb_dlink_node
*next_ptr
;
659 RB_DLINK_FOREACH_SAFE(ptr
, next_ptr
, lclient_list
.head
)
661 client_p
= ptr
->data
;
666 if((aconf
= find_dline((struct sockaddr
*)&client_p
->localClient
->ip
, GET_SS_FAMILY(&client_p
->localClient
->ip
))) != NULL
)
668 if(aconf
->status
& CONF_EXEMPTDLINE
)
671 sendto_realops_snomask(SNO_GENERAL
, L_NETWIDE
,
672 "Disconnecting D-Lined user %s (%s)",
673 get_client_name(client_p
, HIDE_IP
), aconf
->host
);
675 notify_banned_client(client_p
, aconf
, D_LINED
);
680 /* dlines need to be checked against unknowns too */
681 RB_DLINK_FOREACH_SAFE(ptr
, next_ptr
, unknown_list
.head
)
683 client_p
= ptr
->data
;
685 if((aconf
= find_dline((struct sockaddr
*)&client_p
->localClient
->ip
, GET_SS_FAMILY(&client_p
->localClient
->ip
))) != NULL
)
687 if(aconf
->status
& CONF_EXEMPTDLINE
)
690 notify_banned_client(client_p
, aconf
, D_LINED
);
699 * side effects - all clients will be checked for xlines
704 struct Client
*client_p
;
705 struct ConfItem
*aconf
;
707 rb_dlink_node
*next_ptr
;
709 RB_DLINK_FOREACH_SAFE(ptr
, next_ptr
, lclient_list
.head
)
711 client_p
= ptr
->data
;
713 if(IsMe(client_p
) || !IsPerson(client_p
))
716 if((aconf
= find_xline(client_p
->info
, 1)) != NULL
)
718 if(IsExemptKline(client_p
))
720 sendto_realops_snomask(SNO_GENERAL
, L_NETWIDE
,
721 "XLINE over-ruled for %s, client is kline_exempt [%s]",
722 get_client_name(client_p
, HIDE_IP
),
727 sendto_realops_snomask(SNO_GENERAL
, L_NETWIDE
,
728 "Disconnecting X-Lined user %s (%s)",
729 get_client_name(client_p
, HIDE_IP
), aconf
->host
);
731 (void) exit_client(client_p
, client_p
, &me
, "Bad user info");
739 * inputs - resv, reason, time
741 * side effects - all local clients matching resv will be FNC'd
744 resv_nick_fnc(const char *mask
, const char *reason
, int temp_time
)
746 struct Client
*client_p
, *target_p
;
748 rb_dlink_node
*next_ptr
;
750 char note
[NICKLEN
+10];
752 if (!ConfigFileEntry
.resv_fnc
)
755 RB_DLINK_FOREACH_SAFE(ptr
, next_ptr
, lclient_list
.head
)
757 client_p
= ptr
->data
;
759 if(IsMe(client_p
) || !IsPerson(client_p
) || IsExemptResv(client_p
))
762 /* Skip users that already have UID nicks. */
763 if(IsDigit(client_p
->name
[0]))
766 if(match_esc(mask
, client_p
->name
))
771 sendto_realops_snomask(SNO_GENERAL
, L_NETWIDE
,
772 "RESV forced nick change for %s!%s@%s to %s; nick matched [%s] (%s)",
773 client_p
->name
, client_p
->username
, client_p
->host
, nick
, mask
, reason
);
775 sendto_realops_snomask(SNO_NCHANGE
, L_NETWIDE
,
776 "Nick change: From %s to %s [%s@%s]",
777 client_p
->name
, nick
, client_p
->username
, client_p
->host
);
782 sendto_one_notice(client_p
,
783 ":*** Nick %s is temporarily unavailable on this server.",
788 sendto_one_notice(client_p
,
789 ":*** Nick %s is no longer available on this server.",
793 /* Do all of the nick-changing gymnastics. */
794 client_p
->tsinfo
= rb_current_time();
795 whowas_add_history(client_p
, 1);
797 monitor_signoff(client_p
);
799 invalidate_bancache_user(client_p
);
801 sendto_common_channels_local(client_p
, NOCAPS
, NOCAPS
, ":%s!%s@%s NICK :%s",
802 client_p
->name
, client_p
->username
, client_p
->host
, nick
);
803 sendto_server(client_p
, NULL
, CAP_TS6
, NOCAPS
, ":%s NICK %s :%ld",
804 use_id(client_p
), nick
, (long) client_p
->tsinfo
);
806 del_from_client_hash(client_p
->name
, client_p
);
807 rb_strlcpy(client_p
->name
, nick
, sizeof(client_p
->name
));
808 add_to_client_hash(nick
, client_p
);
810 monitor_signon(client_p
);
812 RB_DLINK_FOREACH_SAFE(ptr
, next_ptr
, client_p
->on_allow_list
.head
)
814 target_p
= ptr
->data
;
815 rb_dlinkFindDestroy(client_p
, &target_p
->localClient
->allow_list
);
816 rb_dlinkDestroy(ptr
, &client_p
->on_allow_list
);
819 snprintf(note
, sizeof(note
), "Nick: %s", nick
);
820 rb_note(client_p
->localClient
->F
, note
);
826 * update_client_exit_stats
828 * input - pointer to client
833 update_client_exit_stats(struct Client
*client_p
)
835 if(IsServer(client_p
))
837 sendto_realops_snomask(SNO_EXTERNAL
, L_ALL
,
838 "Server %s split from %s",
839 client_p
->name
, client_p
->servptr
->name
);
840 if(HasSentEob(client_p
))
843 else if(IsClient(client_p
))
848 if(IsInvisible(client_p
))
852 if(splitchecking
&& !splitmode
)
853 check_splitmode(NULL
);
857 * release_client_state
859 * input - pointer to client to release
864 release_client_state(struct Client
*client_p
)
866 if(client_p
->user
!= NULL
)
868 free_user(client_p
->user
, client_p
); /* try this here */
872 if(client_p
->serv
->user
!= NULL
)
873 free_user(client_p
->serv
->user
, client_p
);
874 if(client_p
->serv
->fullcaps
)
875 rb_free(client_p
->serv
->fullcaps
);
876 rb_free(client_p
->serv
);
881 * remove_client_from_list
882 * inputs - point to client to remove
884 * side effects - taken the code from ExitOneClient() for this
885 * and placed it here. - avalon
888 remove_client_from_list(struct Client
*client_p
)
890 s_assert(NULL
!= client_p
);
895 /* A client made with make_client()
896 * is on the unknown_list until removed.
897 * If it =does= happen to exit before its removed from that list
898 * and its =not= on the global_client_list, it will core here.
899 * short circuit that case now -db
901 if(client_p
->node
.prev
== NULL
&& client_p
->node
.next
== NULL
)
904 rb_dlinkDelete(&client_p
->node
, &global_client_list
);
906 update_client_exit_stats(client_p
);
912 * input - nickname to check, flag for nick from local client
913 * output - 0 if erroneous, else 1
917 clean_nick(const char *nick
, int loc_client
)
921 /* nicks cant start with a digit or -, and must have a length */
922 if(*nick
== '-' || *nick
== '\0')
925 if(loc_client
&& IsDigit(*nick
))
931 if(!IsNickChar(*nick
))
936 if(len
>= NICKLEN
&& (unsigned int)len
>= ConfigFileEntry
.nicklen
)
943 * find_person - find person by (nick)name.
944 * inputs - pointer to name
945 * output - return client pointer
949 find_person(const char *name
)
951 struct Client
*c2ptr
;
953 c2ptr
= find_client(name
);
955 if(c2ptr
&& IsPerson(c2ptr
))
961 find_named_person(const char *name
)
963 struct Client
*c2ptr
;
965 c2ptr
= find_named_client(name
);
967 if(c2ptr
&& IsPerson(c2ptr
))
974 * find_chasing - find the client structure for a nick name (user)
975 * using history mechanism if necessary. If the client is not found,
976 * an error message (NO SUCH NICK) is generated. If the client was found
977 * through the history, chasing will be 1 and otherwise 0.
980 find_chasing(struct Client
*source_p
, const char *user
, int *chasing
)
984 if(MyClient(source_p
))
985 who
= find_named_person(user
);
987 who
= find_person(user
);
992 if(who
|| IsDigit(*user
))
995 if(!(who
= whowas_get_history(user
, (long) KILLCHASETIMELIMIT
)))
997 sendto_one_numeric(source_p
, ERR_NOSUCHNICK
,
998 form_str(ERR_NOSUCHNICK
), user
);
1007 * get_client_name - Return the name of the client
1008 * for various tracking and
1009 * admin purposes. The main purpose of this function is to
1010 * return the "socket host" name of the client, if that
1011 * differs from the advertised name (other than case).
1012 * But, this can be used to any client structure.
1015 * Watch out the allocation of "nbuf", if either source_p->name
1016 * or source_p->sockhost gets changed into pointers instead of
1017 * directly allocated within the structure...
1020 * Function return either a pointer to the structure (source_p) or
1021 * to internal buffer (nbuf). *NEVER* use the returned pointer
1022 * to modify what it points!!!
1026 get_client_name(struct Client
*client
, int showip
)
1028 static char nbuf
[HOSTLEN
* 2 + USERLEN
+ 5];
1030 s_assert(NULL
!= client
);
1034 if(MyConnect(client
))
1036 if(!irccmp(client
->name
, client
->host
))
1037 return client
->name
;
1039 if(ConfigFileEntry
.hide_spoof_ips
&&
1040 showip
== SHOW_IP
&& IsIPSpoof(client
))
1042 if(IsAnyServer(client
))
1045 /* And finally, let's get the host information, ip or name */
1049 snprintf(nbuf
, sizeof(nbuf
), "%s[%s@%s]",
1050 client
->name
, client
->username
,
1054 snprintf(nbuf
, sizeof(nbuf
), "%s[%s@255.255.255.255]",
1055 client
->name
, client
->username
);
1058 snprintf(nbuf
, sizeof(nbuf
), "%s[%s@%s]",
1059 client
->name
, client
->username
, client
->host
);
1064 /* As pointed out by Adel Mezibra
1065 * Neph|l|m@EFnet. Was missing a return here.
1067 return client
->name
;
1070 /* log_client_name()
1072 * This version is the same as get_client_name, but doesnt contain the
1073 * code that will hide IPs always. This should be used for logfiles.
1076 log_client_name(struct Client
*target_p
, int showip
)
1078 static char nbuf
[HOSTLEN
* 2 + USERLEN
+ 5];
1080 if(target_p
== NULL
)
1083 if(MyConnect(target_p
))
1085 if(irccmp(target_p
->name
, target_p
->host
) == 0)
1086 return target_p
->name
;
1091 snprintf(nbuf
, sizeof(nbuf
), "%s[%s@%s]", target_p
->name
,
1092 target_p
->username
, target_p
->sockhost
);
1096 snprintf(nbuf
, sizeof(nbuf
), "%s[%s@%s]", target_p
->name
,
1097 target_p
->username
, target_p
->host
);
1103 return target_p
->name
;
1106 /* is_remote_connect - Returns whether a server was /connect'ed by a remote
1107 * oper (send notices netwide) */
1109 is_remote_connect(struct Client
*client_p
)
1111 struct Client
*oper
;
1113 if (client_p
->serv
== NULL
)
1115 oper
= find_named_person(client_p
->serv
->by
);
1116 return oper
!= NULL
&& IsOper(oper
) && !MyConnect(oper
);
1120 free_exited_clients(void *unused
)
1122 rb_dlink_node
*ptr
, *next
;
1123 struct Client
*target_p
;
1125 RB_DLINK_FOREACH_SAFE(ptr
, next
, dead_list
.head
)
1127 target_p
= ptr
->data
;
1129 #ifdef DEBUG_EXITED_CLIENTS
1131 struct abort_client
*abt
;
1132 rb_dlink_node
*aptr
;
1135 RB_DLINK_FOREACH(aptr
, abort_list
.head
)
1138 if(abt
->client
== target_p
)
1141 sendto_realops_snomask(SNO_GENERAL
, L_ALL
,
1142 "On abort_list: %s stat: %u flags: %llu handler: %c",
1143 target_p
->name
, (unsigned int) target_p
->status
,
1144 (unsigned long long)target_p
->flags
, target_p
->handler
);
1145 sendto_realops_snomask(SNO_GENERAL
, L_ALL
,
1146 "Please report this to the solanum developers!");
1153 rb_dlinkDestroy(ptr
, &dead_list
);
1159 if(ptr
->data
== NULL
)
1161 sendto_realops_snomask(SNO_GENERAL
, L_ALL
,
1162 "Warning: null client on dead_list!");
1163 rb_dlinkDestroy(ptr
, &dead_list
);
1166 release_client_state(target_p
);
1167 free_client(target_p
);
1168 rb_dlinkDestroy(ptr
, &dead_list
);
1171 #ifdef DEBUG_EXITED_CLIENTS
1172 RB_DLINK_FOREACH_SAFE(ptr
, next
, dead_remote_list
.head
)
1174 target_p
= ptr
->data
;
1176 if(ptr
->data
== NULL
)
1178 sendto_realops_snomask(SNO_GENERAL
, L_ALL
,
1179 "Warning: null client on dead_list!");
1180 rb_dlinkDestroy(ptr
, &dead_list
);
1183 release_client_state(target_p
);
1184 free_client(target_p
);
1185 rb_dlinkDestroy(ptr
, &dead_remote_list
);
1192 ** Remove all clients that depend on source_p; assumes all (S)QUITs have
1193 ** already been sent. we make sure to exit a server's dependent clients
1194 ** and servers before the server itself; exit_one_client takes care of
1195 ** actually removing things off llists. tweaked from +CSr31 -orabidoo
1198 * added sanity test code.... source_p->serv might be NULL...
1201 recurse_remove_clients(struct Client
*source_p
, const char *comment
)
1203 struct Client
*target_p
;
1204 rb_dlink_node
*ptr
, *ptr_next
;
1209 if(source_p
->serv
== NULL
) /* oooops. uh this is actually a major bug */
1212 /* this is very ugly, but it saves cpu :P */
1213 if(ConfigFileEntry
.nick_delay
> 0)
1215 RB_DLINK_FOREACH_SAFE(ptr
, ptr_next
, source_p
->serv
->users
.head
)
1217 target_p
= ptr
->data
;
1218 target_p
->flags
|= FLAGS_KILLED
;
1219 add_nd_entry(target_p
->name
);
1221 if(!IsDead(target_p
) && !IsClosing(target_p
))
1222 exit_remote_client(NULL
, target_p
, &me
, comment
);
1227 RB_DLINK_FOREACH_SAFE(ptr
, ptr_next
, source_p
->serv
->users
.head
)
1229 target_p
= ptr
->data
;
1230 target_p
->flags
|= FLAGS_KILLED
;
1232 if(!IsDead(target_p
) && !IsClosing(target_p
))
1233 exit_remote_client(NULL
, target_p
, &me
, comment
);
1237 RB_DLINK_FOREACH_SAFE(ptr
, ptr_next
, source_p
->serv
->servers
.head
)
1239 target_p
= ptr
->data
;
1240 recurse_remove_clients(target_p
, comment
);
1241 qs_server(NULL
, target_p
, &me
, comment
);
1246 ** Remove *everything* that depends on source_p, from all lists, and sending
1247 ** all necessary SQUITs. source_p itself is still on the lists,
1248 ** and its SQUITs have been sent except for the upstream one -orabidoo
1251 remove_dependents(struct Client
*client_p
,
1252 struct Client
*source_p
,
1253 struct Client
*from
, const char *comment
, const char *comment1
)
1256 rb_dlink_node
*ptr
, *next
;
1258 RB_DLINK_FOREACH_SAFE(ptr
, next
, serv_list
.head
)
1262 if(IsMe(to
) || to
== source_p
->from
|| to
== client_p
)
1265 sendto_one(to
, "SQUIT %s :%s", get_id(source_p
, to
), comment
);
1268 recurse_remove_clients(source_p
, comment1
);
1272 exit_aborted_clients(void *unused
)
1274 struct abort_client
*abt
;
1275 rb_dlink_node
*ptr
, *next
;
1276 RB_DLINK_FOREACH_SAFE(ptr
, next
, abort_list
.head
)
1280 #ifdef DEBUG_EXITED_CLIENTS
1282 if(rb_dlinkFind(abt
->client
, &dead_list
))
1285 sendto_realops_snomask(SNO_GENERAL
, L_ALL
,
1286 "On dead_list: %s stat: %u flags: %llu handler: %c",
1287 abt
->client
->name
, (unsigned int) abt
->client
->status
,
1288 (unsigned long long)abt
->client
->flags
, abt
->client
->handler
);
1289 sendto_realops_snomask(SNO_GENERAL
, L_ALL
,
1290 "Please report this to the solanum developers!");
1296 s_assert(*((unsigned long*)abt
->client
) != 0xdeadbeef); /* This is lame but its a debug thing */
1297 rb_dlinkDelete(ptr
, &abort_list
);
1299 if(IsAnyServer(abt
->client
))
1300 sendto_realops_snomask(SNO_GENERAL
, L_NETWIDE
,
1301 "Closing link to %s: %s",
1302 abt
->client
->name
, abt
->notice
);
1304 /* its no longer on abort list - we *must* remove
1305 * FLAGS_CLOSING otherwise exit_client() will not run --fl
1307 abt
->client
->flags
&= ~FLAGS_CLOSING
;
1308 exit_client(abt
->client
, abt
->client
, &me
, abt
->notice
);
1315 * dead_link - Adds client to a list of clients that need an exit_client()
1318 dead_link(struct Client
*client_p
, int sendqex
)
1320 struct abort_client
*abt
;
1322 s_assert(!IsMe(client_p
));
1323 if(IsDead(client_p
) || IsClosing(client_p
) || IsMe(client_p
))
1326 abt
= (struct abort_client
*) rb_malloc(sizeof(struct abort_client
));
1329 rb_strlcpy(abt
->notice
, "Max SendQ exceeded", sizeof(abt
->notice
));
1331 snprintf(abt
->notice
, sizeof(abt
->notice
), "Write error: %s", strerror(errno
));
1333 abt
->client
= client_p
;
1334 SetIOError(client_p
);
1336 SetClosing(client_p
);
1337 rb_dlinkAdd(abt
, &abt
->node
, &abort_list
);
1341 /* This does the remove of the user from channels..local or remote */
1343 exit_generic_client(struct Client
*client_p
, struct Client
*source_p
, struct Client
*from
,
1344 const char *comment
)
1346 rb_dlink_node
*ptr
, *next_ptr
;
1348 if(IsOper(source_p
))
1349 rb_dlinkFindDestroy(source_p
, &oper_list
);
1351 sendto_common_channels_local(source_p
, NOCAPS
, NOCAPS
, ":%s!%s@%s QUIT :%s",
1353 source_p
->username
, source_p
->host
, comment
);
1355 remove_user_from_channels(source_p
);
1357 /* Should not be in any channels now */
1358 s_assert(source_p
->user
->channel
.head
== NULL
);
1360 /* Clean up invitefield */
1361 RB_DLINK_FOREACH_SAFE(ptr
, next_ptr
, source_p
->user
->invited
.head
)
1363 del_invite(ptr
->data
, source_p
);
1366 /* Clean up allow lists */
1367 del_all_accepts(source_p
);
1369 whowas_add_history(source_p
, 0);
1370 whowas_off_history(source_p
);
1372 monitor_signoff(source_p
);
1374 if(has_id(source_p
))
1375 del_from_id_hash(source_p
->id
, source_p
);
1377 del_from_hostname_hash(source_p
->orighost
, source_p
);
1378 del_from_client_hash(source_p
->name
, source_p
);
1379 remove_client_from_list(source_p
);
1383 * Assumes IsPerson(source_p) && !MyConnect(source_p)
1387 exit_remote_client(struct Client
*client_p
, struct Client
*source_p
, struct Client
*from
,
1388 const char *comment
)
1390 exit_generic_client(client_p
, source_p
, from
, comment
);
1392 if(source_p
->servptr
&& source_p
->servptr
->serv
)
1394 rb_dlinkDelete(&source_p
->lnode
, &source_p
->servptr
->serv
->users
);
1397 if((source_p
->flags
& FLAGS_KILLED
) == 0)
1399 sendto_server(client_p
, NULL
, CAP_TS6
, NOCAPS
,
1400 ":%s QUIT :%s", use_id(source_p
), comment
);
1404 #ifdef DEBUG_EXITED_CLIENTS
1405 rb_dlinkAddAlloc(source_p
, &dead_remote_list
);
1407 rb_dlinkAddAlloc(source_p
, &dead_list
);
1409 return(CLIENT_EXITED
);
1413 * This assumes IsUnknown(source_p) == true and MyConnect(source_p) == true
1417 exit_unknown_client(struct Client
*client_p
, /* The local client originating the
1418 * exit or NULL, if this exit is
1419 * generated by this server for
1421 * This will not get any of the
1422 * generated messages. */
1423 struct Client
*source_p
, /* Client exiting */
1424 struct Client
*from
, /* Client firing off this Exit,
1426 const char *comment
)
1428 authd_abort_client(source_p
);
1429 rb_dlinkDelete(&source_p
->localClient
->tnode
, &unknown_list
);
1431 if(!IsIOError(source_p
))
1432 sendto_one(source_p
, "ERROR :Closing Link: %s (%s)",
1433 source_p
->user
!= NULL
? source_p
->host
: "127.0.0.1",
1436 close_connection(source_p
);
1438 if(has_id(source_p
))
1439 del_from_id_hash(source_p
->id
, source_p
);
1441 del_from_hostname_hash(source_p
->host
, source_p
);
1442 if (!IsAnyServer(source_p
))
1443 del_from_client_hash(source_p
->name
, source_p
);
1444 remove_client_from_list(source_p
);
1446 rb_dlinkAddAlloc(source_p
, &dead_list
);
1448 /* Note that we don't need to add unknowns to the dead_list */
1449 return(CLIENT_EXITED
);
1453 exit_remote_server(struct Client
*client_p
, struct Client
*source_p
, struct Client
*from
,
1454 const char *comment
)
1456 static char comment1
[(HOSTLEN
*2)+2];
1457 static char newcomment
[BUFSIZE
];
1458 struct Client
*target_p
;
1460 if(ConfigServerHide
.flatten_links
)
1461 strcpy(comment1
, "*.net *.split");
1464 strcpy(comment1
, source_p
->servptr
->name
);
1465 strcat(comment1
, " ");
1466 strcat(comment1
, source_p
->name
);
1469 snprintf(newcomment
, sizeof(newcomment
), "by %s: %s",
1470 from
->name
, comment
);
1472 remove_dependents(client_p
, source_p
, from
, IsPerson(from
) ? newcomment
: comment
, comment1
);
1474 rb_dlinkDelete(&source_p
->lnode
, &source_p
->servptr
->serv
->servers
);
1476 rb_dlinkFindDestroy(source_p
, &global_serv_list
);
1477 target_p
= source_p
->from
;
1479 if(target_p
!= NULL
&& IsServer(target_p
) && target_p
!= client_p
&&
1480 !IsMe(target_p
) && (source_p
->flags
& FLAGS_KILLED
) == 0)
1482 sendto_one(target_p
, ":%s SQUIT %s :%s",
1483 get_id(from
, target_p
), get_id(source_p
, target_p
),
1487 if(has_id(source_p
))
1488 del_from_id_hash(source_p
->id
, source_p
);
1490 del_from_client_hash(source_p
->name
, source_p
);
1491 remove_client_from_list(source_p
);
1493 scache_split(source_p
->serv
->nameinfo
);
1496 #ifdef DEBUG_EXITED_CLIENTS
1497 rb_dlinkAddAlloc(source_p
, &dead_remote_list
);
1499 rb_dlinkAddAlloc(source_p
, &dead_list
);
1505 qs_server(struct Client
*client_p
, struct Client
*source_p
, struct Client
*from
,
1506 const char *comment
)
1508 if(source_p
->servptr
&& source_p
->servptr
->serv
)
1509 rb_dlinkDelete(&source_p
->lnode
, &source_p
->servptr
->serv
->servers
);
1513 rb_dlinkFindDestroy(source_p
, &global_serv_list
);
1515 if(has_id(source_p
))
1516 del_from_id_hash(source_p
->id
, source_p
);
1518 del_from_client_hash(source_p
->name
, source_p
);
1519 remove_client_from_list(source_p
);
1520 scache_split(source_p
->serv
->nameinfo
);
1523 rb_dlinkAddAlloc(source_p
, &dead_list
);
1528 exit_local_server(struct Client
*client_p
, struct Client
*source_p
, struct Client
*from
,
1529 const char *comment
)
1531 static char comment1
[(HOSTLEN
*2)+2];
1532 static char newcomment
[BUFSIZE
];
1533 unsigned int sendk
, recvk
;
1535 rb_dlinkDelete(&source_p
->localClient
->tnode
, &serv_list
);
1536 rb_dlinkFindDestroy(source_p
, &global_serv_list
);
1538 sendk
= source_p
->localClient
->sendK
;
1539 recvk
= source_p
->localClient
->receiveK
;
1541 /* Always show source here, so the server notices show
1542 * which side initiated the split -- jilles
1544 snprintf(newcomment
, sizeof(newcomment
), "by %s: %s",
1545 from
== source_p
? me
.name
: from
->name
, comment
);
1546 if (!IsIOError(source_p
))
1547 sendto_one(source_p
, "SQUIT %s :%s", use_id(source_p
),
1549 if(client_p
!= NULL
&& source_p
!= client_p
&& !IsIOError(source_p
))
1551 sendto_one(source_p
, "ERROR :Closing Link: 127.0.0.1 %s (%s)",
1552 source_p
->name
, comment
);
1555 if(source_p
->servptr
&& source_p
->servptr
->serv
)
1556 rb_dlinkDelete(&source_p
->lnode
, &source_p
->servptr
->serv
->servers
);
1561 close_connection(source_p
);
1563 if(ConfigServerHide
.flatten_links
)
1564 strcpy(comment1
, "*.net *.split");
1567 strcpy(comment1
, source_p
->servptr
->name
);
1568 strcat(comment1
, " ");
1569 strcat(comment1
, source_p
->name
);
1572 if(source_p
->serv
!= NULL
)
1573 remove_dependents(client_p
, source_p
, from
, IsPerson(from
) ? newcomment
: comment
, comment1
);
1575 sendto_realops_snomask(SNO_GENERAL
, L_ALL
, "%s was connected"
1576 " for %ld seconds. %d/%d sendK/recvK.",
1577 source_p
->name
, (long) rb_current_time() - source_p
->localClient
->firsttime
, sendk
, recvk
);
1579 ilog(L_SERVER
, "%s was connected for %ld seconds. %d/%d sendK/recvK.",
1580 source_p
->name
, (long) rb_current_time() - source_p
->localClient
->firsttime
, sendk
, recvk
);
1582 if(has_id(source_p
))
1583 del_from_id_hash(source_p
->id
, source_p
);
1585 del_from_client_hash(source_p
->name
, source_p
);
1586 remove_client_from_list(source_p
);
1587 scache_split(source_p
->serv
->nameinfo
);
1590 rb_dlinkAddAlloc(source_p
, &dead_list
);
1596 * This assumes IsPerson(source_p) == true && MyConnect(source_p) == true
1600 exit_local_client(struct Client
*client_p
, struct Client
*source_p
, struct Client
*from
,
1601 const char *comment
)
1603 unsigned long on_for
;
1606 exit_generic_client(client_p
, source_p
, from
, comment
);
1607 clear_monitor(source_p
);
1609 s_assert(IsPerson(source_p
));
1610 rb_dlinkDelete(&source_p
->localClient
->tnode
, &lclient_list
);
1611 rb_dlinkDelete(&source_p
->lnode
, &me
.serv
->users
);
1613 if(IsOper(source_p
))
1614 rb_dlinkFindDestroy(source_p
, &local_oper_list
);
1616 sendto_realops_snomask(SNO_CCONN
, L_ALL
,
1617 "Client exiting: %s (%s@%s) [%s] [%s]",
1619 source_p
->username
, source_p
->host
, comment
,
1620 show_ip(NULL
, source_p
) ? source_p
->sockhost
: "255.255.255.255");
1622 sendto_realops_snomask(SNO_CCONNEXT
, L_ALL
,
1623 "CLIEXIT %s %s %s %s 0 %s",
1624 source_p
->name
, source_p
->username
, source_p
->host
,
1625 show_ip(NULL
, source_p
) ? source_p
->sockhost
: "255.255.255.255",
1628 on_for
= rb_current_time() - source_p
->localClient
->firsttime
;
1630 ilog(L_USER
, "%s (%3lu:%02lu:%02lu): %s!%s@%s %s %d/%d",
1631 rb_ctime(rb_current_time(), tbuf
, sizeof(tbuf
)), on_for
/ 3600,
1632 (on_for
% 3600) / 60, on_for
% 60,
1633 source_p
->name
, source_p
->username
, source_p
->host
,
1635 source_p
->localClient
->sendK
, source_p
->localClient
->receiveK
);
1637 sendto_one(source_p
, "ERROR :Closing Link: %s (%s)", source_p
->host
, comment
);
1638 close_connection(source_p
);
1640 if((source_p
->flags
& FLAGS_KILLED
) == 0)
1642 sendto_server(client_p
, NULL
, CAP_TS6
, NOCAPS
,
1643 ":%s QUIT :%s", use_id(source_p
), comment
);
1647 rb_dlinkAddAlloc(source_p
, &dead_list
);
1648 return(CLIENT_EXITED
);
1653 ** exit_client - This is old "m_bye". Name changed, because this is not a
1654 ** protocol function, but a general server utility function.
1656 ** This function exits a client of *any* type (user, server, etc)
1657 ** from this server. Also, this generates all necessary prototol
1658 ** messages that this exit may cause.
1660 ** 1) If the client is a local client, then this implicitly
1661 ** exits all other clients depending on this connection (e.g.
1662 ** remote clients having 'from'-field that points to this.
1664 ** 2) If the client is a remote client, then only this is exited.
1666 ** For convenience, this function returns a suitable value for
1667 ** m_function return value:
1669 ** CLIENT_EXITED if (client_p == source_p)
1670 ** 0 if (client_p != source_p)
1673 exit_client(struct Client
*client_p
, /* The local client originating the
1674 * exit or NULL, if this exit is
1675 * generated by this server for
1677 * This will not get any of the
1678 * generated messages. */
1679 struct Client
*source_p
, /* Client exiting */
1680 struct Client
*from
, /* Client firing off this Exit,
1682 const char *comment
/* Reason for the exit */
1687 hook_data_client_exit hdata
;
1688 if(IsClosing(source_p
))
1691 /* note, this HAS to be here, when we exit a client we attempt to
1692 * send them data, if this generates a write error we must *not* add
1693 * them to the abort list --fl
1695 SetClosing(source_p
);
1697 hdata
.local_link
= client_p
;
1698 hdata
.target
= source_p
;
1700 hdata
.comment
= comment
;
1701 call_hook(h_client_exit
, &hdata
);
1703 if(MyConnect(source_p
))
1705 /* Local clients of various types */
1706 if(IsPerson(source_p
))
1707 ret
= exit_local_client(client_p
, source_p
, from
, comment
);
1708 else if(IsServer(source_p
))
1709 ret
= exit_local_server(client_p
, source_p
, from
, comment
);
1710 /* IsUnknown || IsConnecting || IsHandShake */
1711 else if(!IsReject(source_p
))
1712 ret
= exit_unknown_client(client_p
, source_p
, from
, comment
);
1717 if(IsPerson(source_p
))
1718 ret
= exit_remote_client(client_p
, source_p
, from
, comment
);
1719 else if(IsServer(source_p
))
1720 ret
= exit_remote_server(client_p
, source_p
, from
, comment
);
1723 call_hook(h_after_client_exit
, NULL
);
1729 * Count up local client memory
1732 /* XXX one common Client list now */
1734 count_local_client_memory(size_t * count
, size_t * local_client_memory_used
)
1737 rb_bh_usage(lclient_heap
, count
, NULL
, &lusage
, NULL
);
1738 *local_client_memory_used
= lusage
+ (*count
* (sizeof(void *) + sizeof(struct Client
)));
1742 * Count up remote client memory
1745 count_remote_client_memory(size_t * count
, size_t * remote_client_memory_used
)
1747 size_t lcount
, rcount
;
1748 rb_bh_usage(lclient_heap
, &lcount
, NULL
, NULL
, NULL
);
1749 rb_bh_usage(client_heap
, &rcount
, NULL
, NULL
, NULL
);
1750 *count
= rcount
- lcount
;
1751 *remote_client_memory_used
= *count
* (sizeof(void *) + sizeof(struct Client
));
1756 * accept processing, this adds a form of "caller ID" to ircd
1758 * If a client puts themselves into "caller ID only" mode,
1759 * only clients that match a client pointer they have put on
1760 * the accept list will be allowed to message them.
1762 * [ source.on_allow_list ] -> [ target1 ] -> [ target2 ]
1764 * [target.allow_list] -> [ source1 ] -> [source2 ]
1766 * i.e. a target will have a link list of source pointers it will allow
1767 * each source client then has a back pointer pointing back
1768 * to the client that has it on its accept list.
1769 * This allows for exit_one_client to remove these now bogus entries
1770 * from any client having an accept on them.
1775 * inputs - pointer to exiting client
1777 * side effects - Walk through given clients allow_list and on_allow_list
1778 * remove all references to this client
1781 del_all_accepts(struct Client
*client_p
)
1784 rb_dlink_node
*next_ptr
;
1785 struct Client
*target_p
;
1787 if(MyClient(client_p
) && client_p
->localClient
->allow_list
.head
)
1789 /* clear this clients accept list, and remove them from
1790 * everyones on_accept_list
1792 RB_DLINK_FOREACH_SAFE(ptr
, next_ptr
, client_p
->localClient
->allow_list
.head
)
1794 target_p
= ptr
->data
;
1795 rb_dlinkFindDestroy(client_p
, &target_p
->on_allow_list
);
1796 rb_dlinkDestroy(ptr
, &client_p
->localClient
->allow_list
);
1800 /* remove this client from everyones accept list */
1801 RB_DLINK_FOREACH_SAFE(ptr
, next_ptr
, client_p
->on_allow_list
.head
)
1803 target_p
= ptr
->data
;
1804 rb_dlinkFindDestroy(client_p
, &target_p
->localClient
->allow_list
);
1805 rb_dlinkDestroy(ptr
, &client_p
->on_allow_list
);
1810 * show_ip() - asks if the true IP should be shown when source is
1811 * asking for info about target
1813 * Inputs - source_p who is asking
1814 * - target_p who do we want the info on
1815 * Output - returns 1 if clear IP can be shown, otherwise 0
1816 * Side Effects - none
1820 show_ip(struct Client
*source_p
, struct Client
*target_p
)
1822 if(IsAnyServer(target_p
))
1826 else if(IsIPSpoof(target_p
))
1828 /* source == NULL indicates message is being sent
1831 if(!ConfigFileEntry
.hide_spoof_ips
&&
1832 (source_p
== NULL
|| HasPrivilege(source_p
, "auspex:hostname")))
1836 else if(IsDynSpoof(target_p
) && (source_p
!= NULL
&& !HasPrivilege(source_p
, "auspex:hostname")))
1843 show_ip_conf(struct ConfItem
*aconf
, struct Client
*source_p
)
1845 if(IsConfDoSpoofIp(aconf
))
1847 if(!ConfigFileEntry
.hide_spoof_ips
&& MyOper(source_p
))
1857 show_ip_whowas(struct Whowas
*whowas
, struct Client
*source_p
)
1859 if(whowas
->flags
& WHOWAS_IP_SPOOFING
)
1860 if(ConfigFileEntry
.hide_spoof_ips
|| !MyOper(source_p
))
1862 if(whowas
->flags
& WHOWAS_DYNSPOOF
)
1863 if(!IsOper(source_p
))
1871 * inputs - pointer to client struct
1872 * output - pointer to struct User
1873 * side effects - add's an User information block to a client
1874 * if it was not previously allocated.
1877 make_user(struct Client
*client_p
)
1881 user
= client_p
->user
;
1884 user
= (struct User
*) rb_bh_alloc(user_heap
);
1886 client_p
->user
= user
;
1894 * inputs - pointer to client struct
1895 * output - pointer to server_t
1896 * side effects - add's an Server information block to a client
1897 * if it was not previously allocated.
1900 make_server(struct Client
*client_p
)
1902 struct Server
*serv
= client_p
->serv
;
1906 serv
= (struct Server
*) rb_malloc(sizeof(struct Server
));
1907 client_p
->serv
= serv
;
1909 return client_p
->serv
;
1915 * inputs - pointer to user struct
1916 * - pointer to client struct
1918 * side effects - Decrease user reference count by one and release block,
1919 * if count reaches 0
1922 free_user(struct User
*user
, struct Client
*client_p
)
1924 free_away(client_p
);
1926 if(--user
->refcnt
<= 0)
1929 rb_free((char *) user
->away
);
1930 rb_free(user
->opername
);
1932 privilegeset_unref(user
->privset
);
1936 if(user
->refcnt
< 0 || user
->invited
.head
|| user
->channel
.head
)
1938 sendto_realops_snomask(SNO_GENERAL
, L_ALL
,
1939 "* %p user (%s!%s@%s) %p %p %p %lu %d *",
1941 client_p
? client_p
->
1948 rb_dlink_list_length(&user
->channel
),
1950 s_assert(!user
->refcnt
);
1951 s_assert(!user
->invited
.head
);
1952 s_assert(!user
->channel
.head
);
1955 rb_bh_free(user_heap
, user
);
1960 allocate_away(struct Client
*client_p
)
1962 if(client_p
->user
->away
== NULL
)
1963 client_p
->user
->away
= rb_bh_alloc(away_heap
);
1968 free_away(struct Client
*client_p
)
1970 if(client_p
->user
!= NULL
&& client_p
->user
->away
!= NULL
) {
1971 rb_bh_free(away_heap
, client_p
->user
->away
);
1972 client_p
->user
->away
= NULL
;
1981 for(i
= 0; i
< 3; i
++)
1982 current_uid
[i
] = me
.id
[i
];
1984 for(i
= 3; i
< 9; i
++)
1985 current_uid
[i
] = 'A';
1987 current_uid
[9] = '\0';
1994 static int flipped
= 0;
1998 for(i
= 8; i
> 3; i
--)
2000 if(current_uid
[i
] == 'Z')
2002 current_uid
[i
] = '0';
2005 else if(current_uid
[i
] != '9')
2011 current_uid
[i
] = 'A';
2014 /* if this next if() triggers, we're fucked. */
2015 if(current_uid
[3] == 'Z')
2017 current_uid
[i
] = 'A';
2023 /* if this happens..well, i'm not sure what to say, but lets handle it correctly */
2024 if(rb_unlikely(flipped
))
2026 /* this slows down uid generation a bit... */
2027 if(find_id(current_uid
) != NULL
)
2035 * Close the physical connection. This function must make
2036 * MyConnect(client_p) == FALSE, and set client_p->from == NULL.
2039 close_connection(struct Client
*client_p
)
2041 s_assert(client_p
!= NULL
);
2042 if(client_p
== NULL
)
2045 s_assert(MyConnect(client_p
));
2046 if(!MyConnect(client_p
))
2049 if(IsServer(client_p
))
2051 struct server_conf
*server_p
;
2053 ServerStats
.is_sv
++;
2054 ServerStats
.is_sbs
+= client_p
->localClient
->sendB
;
2055 ServerStats
.is_sbr
+= client_p
->localClient
->receiveB
;
2056 ServerStats
.is_sti
+= (unsigned long long)(rb_current_time() - client_p
->localClient
->firsttime
);
2059 * If the connection has been up for a long amount of time, schedule
2060 * a 'quick' reconnect, else reset the next-connect cycle.
2062 if((server_p
= find_server_conf(client_p
->name
)) != NULL
)
2065 * Reschedule a faster reconnect, if this was a automatically
2066 * connected configuration entry. (Note that if we have had
2067 * a rehash in between, the status has been changed to
2068 * CONF_ILLEGAL). But only do this if it was a "good" link.
2070 server_p
->hold
= time(NULL
);
2072 (server_p
->hold
- client_p
->localClient
->lasttime
>
2073 HANGONGOODLINK
) ? HANGONRETRYDELAY
: ConFreq(server_p
->class);
2077 else if(IsClient(client_p
))
2079 ServerStats
.is_cl
++;
2080 ServerStats
.is_cbs
+= client_p
->localClient
->sendB
;
2081 ServerStats
.is_cbr
+= client_p
->localClient
->receiveB
;
2082 ServerStats
.is_cti
+= (unsigned long long)(rb_current_time() - client_p
->localClient
->firsttime
);
2085 ServerStats
.is_ni
++;
2087 client_release_connids(client_p
);
2089 if(client_p
->localClient
->F
!= NULL
)
2091 /* attempt to flush any pending dbufs. Evil, but .. -- adrian */
2092 if(!IsIOError(client_p
))
2093 send_queued(client_p
);
2095 rb_close(client_p
->localClient
->F
);
2096 client_p
->localClient
->F
= NULL
;
2099 rb_linebuf_donebuf(&client_p
->localClient
->buf_sendq
);
2100 rb_linebuf_donebuf(&client_p
->localClient
->buf_recvq
);
2101 detach_conf(client_p
);
2103 /* XXX shouldnt really be done here. */
2104 detach_server_conf(client_p
);
2106 client_p
->from
= NULL
; /* ...this should catch them! >:) --msa */
2107 ClearMyConnect(client_p
);
2108 SetIOError(client_p
);
2114 error_exit_client(struct Client
*client_p
, int error
)
2117 * ...hmm, with non-blocking sockets we might get
2118 * here from quite valid reasons, although.. why
2119 * would select report "data available" when there
2120 * wasn't... so, this must be an error anyway... --msa
2121 * actually, EOF occurs when read() returns 0 and
2122 * in due course, select() returns that fd as ready
2123 * for reading even though it ends up being an EOF. -avalon
2126 int current_error
= rb_get_sockerr(client_p
->localClient
->F
);
2128 SetIOError(client_p
);
2130 if(IsServer(client_p
) || IsHandshake(client_p
))
2134 sendto_realops_snomask(SNO_GENERAL
, L_NETWIDE
,
2135 "Server %s closed the connection",
2138 ilog(L_SERVER
, "Server %s closed the connection",
2139 log_client_name(client_p
, SHOW_IP
));
2143 sendto_realops_snomask(SNO_GENERAL
, L_NETWIDE
,
2144 "Lost connection to %s: %s",
2145 client_p
->name
, strerror(current_error
));
2146 ilog(L_SERVER
, "Lost connection to %s: %s",
2147 log_client_name(client_p
, SHOW_IP
), strerror(current_error
));
2152 rb_strlcpy(errmsg
, "Remote host closed the connection", sizeof(errmsg
));
2154 snprintf(errmsg
, sizeof(errmsg
), "Read error: %s", strerror(current_error
));
2156 exit_client(client_p
, client_p
, &me
, errmsg
);