mirror of
https://github.com/matrix-construct/construct
synced 2024-08-31 05:45:16 +02:00
2082 lines
51 KiB
C
2082 lines
51 KiB
C
/*
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* charybdis: an advanced ircd.
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* client.c: Controls clients.
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*
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* Copyright (C) 1990 Jarkko Oikarinen and University of Oulu, Co Center
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* Copyright (C) 1996-2002 Hybrid Development Team
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* Copyright (C) 2002-2005 ircd-ratbox development team
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* Copyright (C) 2007 William Pitcock
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*
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* This program is free software; you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation; either version 2 of the License, or
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* (at your option) any later version.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this program; if not, write to the Free Software
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* Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307
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* USA
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*/
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#include "stdinc.h"
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#include "defaults.h"
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#include "client.h"
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#include "class.h"
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#include "hash.h"
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#include "match.h"
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#include "ircd.h"
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#include "numeric.h"
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#include "packet.h"
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#include "authproc.h"
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#include "s_conf.h"
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#include "s_newconf.h"
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#include "logger.h"
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#include "s_serv.h"
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#include "s_stats.h"
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#include "send.h"
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#include "whowas.h"
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#include "s_user.h"
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#include "hash.h"
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#include "hostmask.h"
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#include "listener.h"
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#include "hook.h"
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#include "msg.h"
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#include "monitor.h"
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#include "reject.h"
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#include "scache.h"
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#include "rb_dictionary.h"
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#include "sslproc.h"
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#include "wsproc.h"
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#include "s_assert.h"
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#define DEBUG_EXITED_CLIENTS
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static void check_pings_list(rb_dlink_list * list);
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static void check_unknowns_list(rb_dlink_list * list);
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static void free_exited_clients(void *unused);
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static void exit_aborted_clients(void *unused);
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static int exit_remote_client(struct Client *, struct Client *, struct Client *,const char *);
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static int exit_remote_server(struct Client *, struct Client *, struct Client *,const char *);
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static int exit_local_client(struct Client *, struct Client *, struct Client *,const char *);
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static int exit_unknown_client(struct Client *, struct Client *, struct Client *,const char *);
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static int exit_local_server(struct Client *, struct Client *, struct Client *,const char *);
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static int qs_server(struct Client *, struct Client *, struct Client *, const char *comment);
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static EVH check_pings;
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static rb_bh *client_heap = NULL;
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static rb_bh *lclient_heap = NULL;
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static rb_bh *pclient_heap = NULL;
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static rb_bh *user_heap = NULL;
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static rb_bh *away_heap = NULL;
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static char current_uid[IDLEN];
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static uint32_t current_connid = 0;
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rb_dictionary *nd_dict = NULL;
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enum
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{
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D_LINED,
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K_LINED
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};
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rb_dlink_list dead_list;
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#ifdef DEBUG_EXITED_CLIENTS
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static rb_dlink_list dead_remote_list;
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#endif
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struct abort_client
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{
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rb_dlink_node node;
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struct Client *client;
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char notice[REASONLEN];
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};
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static rb_dlink_list abort_list;
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/*
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* init_client
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*
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* inputs - NONE
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* output - NONE
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* side effects - initialize client free memory
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*/
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void
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init_client(void)
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{
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/*
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* start off the check ping event .. -- adrian
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* Every 30 seconds is plenty -- db
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*/
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client_heap = rb_bh_create(sizeof(struct Client), CLIENT_HEAP_SIZE, "client_heap");
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lclient_heap = rb_bh_create(sizeof(struct LocalUser), LCLIENT_HEAP_SIZE, "lclient_heap");
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pclient_heap = rb_bh_create(sizeof(struct PreClient), PCLIENT_HEAP_SIZE, "pclient_heap");
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user_heap = rb_bh_create(sizeof(struct User), USER_HEAP_SIZE, "user_heap");
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away_heap = rb_bh_create(AWAYLEN, AWAY_HEAP_SIZE, "away_heap");
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rb_event_addish("check_pings", check_pings, NULL, 30);
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rb_event_addish("free_exited_clients", &free_exited_clients, NULL, 4);
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rb_event_addish("exit_aborted_clients", exit_aborted_clients, NULL, 1);
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rb_event_add("flood_recalc", flood_recalc, NULL, 1);
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nd_dict = rb_dictionary_create("nickdelay", irccmp);
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}
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/*
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* connid_get - allocate a connid
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*
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* inputs - none
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* outputs - a connid token which is used to represent a logical circuit
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* side effects - current_connid is incremented, possibly multiple times.
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* the association of the connid to it's client is committed.
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*/
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uint32_t
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connid_get(struct Client *client_p)
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{
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s_assert(MyClient(client_p));
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if (!MyClient(client_p))
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return 0;
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/* find a connid that is available */
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while (find_cli_connid_hash(++current_connid) != NULL)
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{
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/* handle wraparound, current_connid must NEVER be 0 */
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if (current_connid == 0)
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++current_connid;
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}
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add_to_cli_connid_hash(client_p, current_connid);
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rb_dlinkAddAlloc(RB_UINT_TO_POINTER(current_connid), &client_p->localClient->connids);
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return current_connid;
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}
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/*
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* connid_put - free a connid
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*
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* inputs - connid to free
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* outputs - nothing
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* side effects - connid bookkeeping structures are freed
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*/
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void
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connid_put(uint32_t id)
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{
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struct Client *client_p;
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s_assert(id != 0);
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if (id == 0)
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return;
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client_p = find_cli_connid_hash(id);
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if (client_p == NULL)
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return;
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del_from_cli_connid_hash(id);
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rb_dlinkFindDestroy(RB_UINT_TO_POINTER(id), &client_p->localClient->connids);
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}
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/*
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* client_release_connids - release any connids still attached to a client
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*
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* inputs - client to garbage collect
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* outputs - none
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* side effects - client's connids are garbage collected
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*/
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void
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client_release_connids(struct Client *client_p)
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{
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rb_dlink_node *ptr, *ptr2;
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s_assert(MyClient(client_p));
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if (!MyClient(client_p))
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return;
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RB_DLINK_FOREACH_SAFE(ptr, ptr2, client_p->localClient->connids.head)
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connid_put(RB_POINTER_TO_UINT(ptr->data));
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}
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/*
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* make_client - create a new Client struct and set it to initial state.
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*
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* from == NULL, create local client (a client connected
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* to a socket).
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*
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* from, create remote client (behind a socket
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* associated with the client defined by
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* 'from'). ('from' is a local client!!).
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*/
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struct Client *
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make_client(struct Client *from)
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{
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struct Client *client_p = NULL;
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struct LocalUser *localClient;
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client_p = rb_bh_alloc(client_heap);
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if(from == NULL)
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{
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client_p->from = client_p; /* 'from' of local client is self! */
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localClient = rb_bh_alloc(lclient_heap);
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SetMyConnect(client_p);
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client_p->localClient = localClient;
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client_p->localClient->lasttime = client_p->localClient->firsttime = rb_current_time();
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client_p->localClient->F = NULL;
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client_p->preClient = rb_bh_alloc(pclient_heap);
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/* as good a place as any... */
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rb_dlinkAdd(client_p, &client_p->localClient->tnode, &unknown_list);
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}
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else
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{ /* from is not NULL */
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client_p->localClient = NULL;
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client_p->preClient = NULL;
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client_p->from = from; /* 'from' of local client is self! */
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}
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SetUnknown(client_p);
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strcpy(client_p->username, "unknown");
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return client_p;
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}
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void
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free_pre_client(struct Client *client_p)
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{
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s_assert(NULL != client_p);
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if(client_p->preClient == NULL)
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return;
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s_assert(client_p->preClient->authd_cid == 0);
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rb_free(client_p->preClient->authd_data);
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rb_free(client_p->preClient->authd_reason);
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rb_bh_free(pclient_heap, client_p->preClient);
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client_p->preClient = NULL;
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}
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static void
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free_local_client(struct Client *client_p)
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{
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s_assert(NULL != client_p);
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s_assert(&me != client_p);
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if(client_p->localClient == NULL)
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return;
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/*
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* clean up extra sockets from P-lines which have been discarded.
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*/
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if(client_p->localClient->listener)
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{
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s_assert(0 < client_p->localClient->listener->ref_count);
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if(0 == --client_p->localClient->listener->ref_count
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&& !client_p->localClient->listener->active)
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free_listener(client_p->localClient->listener);
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client_p->localClient->listener = 0;
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}
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client_release_connids(client_p);
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if(client_p->localClient->F != NULL)
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{
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rb_close(client_p->localClient->F);
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}
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if(client_p->localClient->passwd)
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{
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memset(client_p->localClient->passwd, 0,
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strlen(client_p->localClient->passwd));
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rb_free(client_p->localClient->passwd);
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}
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rb_free(client_p->localClient->auth_user);
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rb_free(client_p->localClient->challenge);
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rb_free(client_p->localClient->fullcaps);
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rb_free(client_p->localClient->opername);
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rb_free(client_p->localClient->mangledhost);
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if (client_p->localClient->privset)
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privilegeset_unref(client_p->localClient->privset);
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if (IsSSL(client_p))
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ssld_decrement_clicount(client_p->localClient->ssl_ctl);
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if (IsCapable(client_p, CAP_ZIP))
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ssld_decrement_clicount(client_p->localClient->z_ctl);
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if (client_p->localClient->ws_ctl != NULL)
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wsockd_decrement_clicount(client_p->localClient->ws_ctl);
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rb_bh_free(lclient_heap, client_p->localClient);
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client_p->localClient = NULL;
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}
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void
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free_client(struct Client *client_p)
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{
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s_assert(NULL != client_p);
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s_assert(&me != client_p);
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free_local_client(client_p);
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free_pre_client(client_p);
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rb_free(client_p->certfp);
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rb_bh_free(client_heap, client_p);
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}
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/*
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* check_pings - go through the local client list and check activity
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* kill off stuff that should die
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*
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* inputs - NOT USED (from event)
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* output - next time_t when check_pings() should be called again
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* side effects -
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*
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*
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* A PING can be sent to clients as necessary.
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*
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* Client/Server ping outs are handled.
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*/
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/*
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* Addon from adrian. We used to call this after nextping seconds,
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* however I've changed it to run once a second. This is only for
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* PING timeouts, not K/etc-line checks (thanks dianora!). Having it
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* run once a second makes life a lot easier - when a new client connects
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* and they need a ping in 4 seconds, if nextping was set to 20 seconds
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* we end up waiting 20 seconds. This is stupid. :-)
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* I will optimise (hah!) check_pings() once I've finished working on
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* tidying up other network IO evilnesses.
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* -- adrian
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*/
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static void
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check_pings(void *notused)
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{
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check_pings_list(&lclient_list);
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check_pings_list(&serv_list);
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check_unknowns_list(&unknown_list);
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}
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/*
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* Check_pings_list()
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*
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* inputs - pointer to list to check
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* output - NONE
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* side effects -
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*/
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static void
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check_pings_list(rb_dlink_list * list)
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{
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char scratch[32]; /* way too generous but... */
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struct Client *client_p; /* current local client_p being examined */
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int ping = 0; /* ping time value from client */
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rb_dlink_node *ptr, *next_ptr;
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RB_DLINK_FOREACH_SAFE(ptr, next_ptr, list->head)
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{
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client_p = ptr->data;
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if(!MyConnect(client_p) || IsDead(client_p))
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continue;
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ping = get_client_ping(client_p);
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if(ping < (rb_current_time() - client_p->localClient->lasttime))
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{
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/*
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* If the client/server hasnt talked to us in 2*ping seconds
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* and it has a ping time, then close its connection.
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*/
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if(((rb_current_time() - client_p->localClient->lasttime) >= (2 * ping)
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&& (client_p->flags & FLAGS_PINGSENT)))
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{
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if(IsServer(client_p))
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{
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sendto_realops_snomask(SNO_GENERAL, L_ALL,
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"No response from %s, closing link",
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client_p->name);
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ilog(L_SERVER,
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"No response from %s, closing link",
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log_client_name(client_p, HIDE_IP));
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}
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(void) snprintf(scratch, sizeof(scratch),
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"Ping timeout: %d seconds",
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(int) (rb_current_time() - client_p->localClient->lasttime));
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exit_client(client_p, client_p, &me, scratch);
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continue;
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}
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else if((client_p->flags & FLAGS_PINGSENT) == 0)
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{
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/*
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* if we havent PINGed the connection and we havent
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* heard from it in a while, PING it to make sure
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* it is still alive.
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*/
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client_p->flags |= FLAGS_PINGSENT;
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/* not nice but does the job */
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client_p->localClient->lasttime = rb_current_time() - ping;
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sendto_one(client_p, "PING :%s", me.name);
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}
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}
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/* ping_timeout: */
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}
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}
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/*
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* check_unknowns_list
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*
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* inputs - pointer to list of unknown clients
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* output - NONE
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* side effects - unknown clients get marked for termination after n seconds
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*/
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static void
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check_unknowns_list(rb_dlink_list * list)
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{
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rb_dlink_node *ptr, *next_ptr;
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struct Client *client_p;
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int timeout;
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RB_DLINK_FOREACH_SAFE(ptr, next_ptr, list->head)
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{
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client_p = ptr->data;
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if(IsDead(client_p) || IsClosing(client_p))
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continue;
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/* Still querying with authd */
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if(client_p->preClient != NULL && client_p->preClient->authd_cid != 0)
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continue;
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/*
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* Check UNKNOWN connections - if they have been in this state
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* for > 30s, close them.
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*/
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timeout = IsAnyServer(client_p) ? ConfigFileEntry.connect_timeout : 30;
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if((rb_current_time() - client_p->localClient->firsttime) > timeout)
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{
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if(IsAnyServer(client_p))
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{
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sendto_realops_snomask(SNO_GENERAL, is_remote_connect(client_p) ? L_NETWIDE : L_ALL,
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"No response from %s, closing link",
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client_p->name);
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ilog(L_SERVER,
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"No response from %s, closing link",
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log_client_name(client_p, HIDE_IP));
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}
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exit_client(client_p, client_p, &me, "Connection timed out");
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}
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}
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}
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static void
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notify_banned_client(struct Client *client_p, struct ConfItem *aconf, int ban)
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{
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static const char conn_closed[] = "Connection closed";
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static const char d_lined[] = "D-lined";
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static const char k_lined[] = "K-lined";
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const char *reason = NULL;
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const char *exit_reason = conn_closed;
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if(ConfigFileEntry.kline_with_reason)
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{
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reason = get_user_ban_reason(aconf);
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exit_reason = reason;
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}
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else
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{
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reason = aconf->status == D_LINED ? d_lined : k_lined;
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}
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if(ban == D_LINED && !IsPerson(client_p))
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sendto_one(client_p, "NOTICE DLINE :*** You have been D-lined");
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else
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sendto_one(client_p, form_str(ERR_YOUREBANNEDCREEP),
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me.name, client_p->name, reason);
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exit_client(client_p, client_p, &me,
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EmptyString(ConfigFileEntry.kline_reason) ? exit_reason :
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ConfigFileEntry.kline_reason);
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}
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|
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/*
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* check_banned_lines
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|
* inputs - NONE
|
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* output - NONE
|
|
* side effects - Check all connections for a pending k/dline against the
|
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* client, exit the client if found.
|
|
*/
|
|
void
|
|
check_banned_lines(void)
|
|
{
|
|
check_dlines();
|
|
check_klines();
|
|
check_xlines();
|
|
}
|
|
|
|
/* check_klines_event()
|
|
*
|
|
* inputs -
|
|
* outputs -
|
|
* side effects - check_klines() is called, kline_queued unset
|
|
*/
|
|
void
|
|
check_klines_event(void *unused)
|
|
{
|
|
kline_queued = false;
|
|
check_klines();
|
|
}
|
|
|
|
/* check_klines
|
|
*
|
|
* inputs -
|
|
* outputs -
|
|
* side effects - all clients will be checked for klines
|
|
*/
|
|
void
|
|
check_klines(void)
|
|
{
|
|
struct Client *client_p;
|
|
struct ConfItem *aconf;
|
|
rb_dlink_node *ptr;
|
|
rb_dlink_node *next_ptr;
|
|
|
|
RB_DLINK_FOREACH_SAFE(ptr, next_ptr, lclient_list.head)
|
|
{
|
|
client_p = ptr->data;
|
|
|
|
if(IsMe(client_p) || !IsPerson(client_p))
|
|
continue;
|
|
|
|
if((aconf = find_kline(client_p)) != NULL)
|
|
{
|
|
if(IsExemptKline(client_p))
|
|
{
|
|
sendto_realops_snomask(SNO_GENERAL, L_ALL,
|
|
"KLINE over-ruled for %s, client is kline_exempt [%s@%s]",
|
|
get_client_name(client_p, HIDE_IP),
|
|
aconf->user, aconf->host);
|
|
continue;
|
|
}
|
|
|
|
sendto_realops_snomask(SNO_GENERAL, L_ALL,
|
|
"KLINE active for %s",
|
|
get_client_name(client_p, HIDE_IP));
|
|
|
|
notify_banned_client(client_p, aconf, K_LINED);
|
|
continue;
|
|
}
|
|
}
|
|
}
|
|
|
|
/* check_dlines()
|
|
*
|
|
* inputs -
|
|
* outputs -
|
|
* side effects - all clients will be checked for dlines
|
|
*/
|
|
void
|
|
check_dlines(void)
|
|
{
|
|
struct Client *client_p;
|
|
struct ConfItem *aconf;
|
|
rb_dlink_node *ptr;
|
|
rb_dlink_node *next_ptr;
|
|
|
|
RB_DLINK_FOREACH_SAFE(ptr, next_ptr, lclient_list.head)
|
|
{
|
|
client_p = ptr->data;
|
|
|
|
if(IsMe(client_p))
|
|
continue;
|
|
|
|
if((aconf = find_dline((struct sockaddr *)&client_p->localClient->ip, GET_SS_FAMILY(&client_p->localClient->ip))) != NULL)
|
|
{
|
|
if(aconf->status & CONF_EXEMPTDLINE)
|
|
continue;
|
|
|
|
sendto_realops_snomask(SNO_GENERAL, L_ALL,
|
|
"DLINE active for %s",
|
|
get_client_name(client_p, HIDE_IP));
|
|
|
|
notify_banned_client(client_p, aconf, D_LINED);
|
|
continue;
|
|
}
|
|
}
|
|
|
|
/* dlines need to be checked against unknowns too */
|
|
RB_DLINK_FOREACH_SAFE(ptr, next_ptr, unknown_list.head)
|
|
{
|
|
client_p = ptr->data;
|
|
|
|
if((aconf = find_dline((struct sockaddr *)&client_p->localClient->ip, GET_SS_FAMILY(&client_p->localClient->ip))) != NULL)
|
|
{
|
|
if(aconf->status & CONF_EXEMPTDLINE)
|
|
continue;
|
|
|
|
notify_banned_client(client_p, aconf, D_LINED);
|
|
}
|
|
}
|
|
}
|
|
|
|
/* check_xlines
|
|
*
|
|
* inputs -
|
|
* outputs -
|
|
* side effects - all clients will be checked for xlines
|
|
*/
|
|
void
|
|
check_xlines(void)
|
|
{
|
|
struct Client *client_p;
|
|
struct ConfItem *aconf;
|
|
rb_dlink_node *ptr;
|
|
rb_dlink_node *next_ptr;
|
|
|
|
RB_DLINK_FOREACH_SAFE(ptr, next_ptr, lclient_list.head)
|
|
{
|
|
client_p = ptr->data;
|
|
|
|
if(IsMe(client_p) || !IsPerson(client_p))
|
|
continue;
|
|
|
|
if((aconf = find_xline(client_p->info, 1)) != NULL)
|
|
{
|
|
if(IsExemptKline(client_p))
|
|
{
|
|
sendto_realops_snomask(SNO_GENERAL, L_ALL,
|
|
"XLINE over-ruled for %s, client is kline_exempt [%s]",
|
|
get_client_name(client_p, HIDE_IP),
|
|
aconf->host);
|
|
continue;
|
|
}
|
|
|
|
sendto_realops_snomask(SNO_GENERAL, L_ALL, "XLINE active for %s",
|
|
get_client_name(client_p, HIDE_IP));
|
|
|
|
(void) exit_client(client_p, client_p, &me, "Bad user info");
|
|
continue;
|
|
}
|
|
}
|
|
}
|
|
|
|
/* resv_nick_fnc
|
|
*
|
|
* inputs - resv, reason, time
|
|
* outputs - NONE
|
|
* side effects - all local clients matching resv will be FNC'd
|
|
*/
|
|
void
|
|
resv_nick_fnc(const char *mask, const char *reason, int temp_time)
|
|
{
|
|
struct Client *client_p, *target_p;
|
|
rb_dlink_node *ptr;
|
|
rb_dlink_node *next_ptr;
|
|
char *nick;
|
|
char note[NICKLEN+10];
|
|
|
|
if (!ConfigFileEntry.resv_fnc)
|
|
return;
|
|
|
|
RB_DLINK_FOREACH_SAFE(ptr, next_ptr, lclient_list.head)
|
|
{
|
|
client_p = ptr->data;
|
|
|
|
if(IsMe(client_p) || !IsPerson(client_p) || IsExemptResv(client_p))
|
|
continue;
|
|
|
|
/* Skip users that already have UID nicks. */
|
|
if(IsDigit(client_p->name[0]))
|
|
continue;
|
|
|
|
if(match_esc(mask, client_p->name))
|
|
{
|
|
nick = client_p->id;
|
|
|
|
/* Tell opers. */
|
|
sendto_realops_snomask(SNO_GENERAL, L_ALL,
|
|
"RESV forced nick change for %s!%s@%s to %s; nick matched [%s] (%s)",
|
|
client_p->name, client_p->username, client_p->host, nick, mask, reason);
|
|
|
|
sendto_realops_snomask(SNO_NCHANGE, L_ALL,
|
|
"Nick change: From %s to %s [%s@%s]",
|
|
client_p->name, nick, client_p->username, client_p->host);
|
|
|
|
/* Tell the user. */
|
|
if (temp_time > 0)
|
|
{
|
|
sendto_one_notice(client_p,
|
|
":*** Nick %s is temporarily unavailable on this server.",
|
|
client_p->name);
|
|
}
|
|
else
|
|
{
|
|
sendto_one_notice(client_p,
|
|
":*** Nick %s is no longer available on this server.",
|
|
client_p->name);
|
|
}
|
|
|
|
/* Do all of the nick-changing gymnastics. */
|
|
client_p->tsinfo = rb_current_time();
|
|
whowas_add_history(client_p, 1);
|
|
|
|
monitor_signoff(client_p);
|
|
|
|
invalidate_bancache_user(client_p);
|
|
|
|
sendto_common_channels_local(client_p, NOCAPS, NOCAPS, ":%s!%s@%s NICK :%s",
|
|
client_p->name, client_p->username, client_p->host, nick);
|
|
sendto_server(client_p, NULL, CAP_TS6, NOCAPS, ":%s NICK %s :%ld",
|
|
use_id(client_p), nick, (long) client_p->tsinfo);
|
|
|
|
del_from_client_hash(client_p->name, client_p);
|
|
rb_strlcpy(client_p->name, nick, sizeof(client_p->name));
|
|
add_to_client_hash(nick, client_p);
|
|
|
|
monitor_signon(client_p);
|
|
|
|
RB_DLINK_FOREACH_SAFE(ptr, next_ptr, client_p->on_allow_list.head)
|
|
{
|
|
target_p = ptr->data;
|
|
rb_dlinkFindDestroy(client_p, &target_p->localClient->allow_list);
|
|
rb_dlinkDestroy(ptr, &client_p->on_allow_list);
|
|
}
|
|
|
|
snprintf(note, sizeof(note), "Nick: %s", nick);
|
|
rb_note(client_p->localClient->F, note);
|
|
}
|
|
}
|
|
}
|
|
|
|
/*
|
|
* update_client_exit_stats
|
|
*
|
|
* input - pointer to client
|
|
* output - NONE
|
|
* side effects -
|
|
*/
|
|
static void
|
|
update_client_exit_stats(struct Client *client_p)
|
|
{
|
|
if(IsServer(client_p))
|
|
{
|
|
sendto_realops_snomask(SNO_EXTERNAL, L_ALL,
|
|
"Server %s split from %s",
|
|
client_p->name, client_p->servptr->name);
|
|
if(HasSentEob(client_p))
|
|
eob_count--;
|
|
}
|
|
else if(IsClient(client_p))
|
|
{
|
|
--Count.total;
|
|
if(IsOper(client_p))
|
|
--Count.oper;
|
|
if(IsInvisible(client_p))
|
|
--Count.invisi;
|
|
}
|
|
|
|
if(splitchecking && !splitmode)
|
|
check_splitmode(NULL);
|
|
}
|
|
|
|
/*
|
|
* release_client_state
|
|
*
|
|
* input - pointer to client to release
|
|
* output - NONE
|
|
* side effects -
|
|
*/
|
|
static void
|
|
release_client_state(struct Client *client_p)
|
|
{
|
|
if(client_p->user != NULL)
|
|
{
|
|
free_user(client_p->user, client_p); /* try this here */
|
|
}
|
|
if(client_p->serv)
|
|
{
|
|
if(client_p->serv->user != NULL)
|
|
free_user(client_p->serv->user, client_p);
|
|
if(client_p->serv->fullcaps)
|
|
rb_free(client_p->serv->fullcaps);
|
|
rb_free(client_p->serv);
|
|
}
|
|
}
|
|
|
|
/*
|
|
* remove_client_from_list
|
|
* inputs - point to client to remove
|
|
* output - NONE
|
|
* side effects - taken the code from ExitOneClient() for this
|
|
* and placed it here. - avalon
|
|
*/
|
|
static void
|
|
remove_client_from_list(struct Client *client_p)
|
|
{
|
|
s_assert(NULL != client_p);
|
|
|
|
if(client_p == NULL)
|
|
return;
|
|
|
|
/* A client made with make_client()
|
|
* is on the unknown_list until removed.
|
|
* If it =does= happen to exit before its removed from that list
|
|
* and its =not= on the global_client_list, it will core here.
|
|
* short circuit that case now -db
|
|
*/
|
|
if(client_p->node.prev == NULL && client_p->node.next == NULL)
|
|
return;
|
|
|
|
rb_dlinkDelete(&client_p->node, &global_client_list);
|
|
|
|
update_client_exit_stats(client_p);
|
|
}
|
|
|
|
|
|
/* clean_nick()
|
|
*
|
|
* input - nickname to check, flag for nick from local client
|
|
* output - 0 if erroneous, else 1
|
|
* side effects -
|
|
*/
|
|
int
|
|
clean_nick(const char *nick, int loc_client)
|
|
{
|
|
int len = 0;
|
|
|
|
/* nicks cant start with a digit or -, and must have a length */
|
|
if(*nick == '-' || *nick == '\0')
|
|
return 0;
|
|
|
|
if(loc_client && IsDigit(*nick))
|
|
return 0;
|
|
|
|
for(; *nick; nick++)
|
|
{
|
|
len++;
|
|
if(!IsNickChar(*nick))
|
|
return 0;
|
|
}
|
|
|
|
/* nicklen is +1 */
|
|
if(len >= NICKLEN && (unsigned int)len >= ConfigFileEntry.nicklen)
|
|
return 0;
|
|
|
|
return 1;
|
|
}
|
|
|
|
/*
|
|
* find_person - find person by (nick)name.
|
|
* inputs - pointer to name
|
|
* output - return client pointer
|
|
* side effects -
|
|
*/
|
|
struct Client *
|
|
find_person(const char *name)
|
|
{
|
|
struct Client *c2ptr;
|
|
|
|
c2ptr = find_client(name);
|
|
|
|
if(c2ptr && IsPerson(c2ptr))
|
|
return (c2ptr);
|
|
return (NULL);
|
|
}
|
|
|
|
struct Client *
|
|
find_named_person(const char *name)
|
|
{
|
|
struct Client *c2ptr;
|
|
|
|
c2ptr = find_named_client(name);
|
|
|
|
if(c2ptr && IsPerson(c2ptr))
|
|
return (c2ptr);
|
|
return (NULL);
|
|
}
|
|
|
|
|
|
/*
|
|
* find_chasing - find the client structure for a nick name (user)
|
|
* using history mechanism if necessary. If the client is not found,
|
|
* an error message (NO SUCH NICK) is generated. If the client was found
|
|
* through the history, chasing will be 1 and otherwise 0.
|
|
*/
|
|
struct Client *
|
|
find_chasing(struct Client *source_p, const char *user, int *chasing)
|
|
{
|
|
struct Client *who;
|
|
|
|
if(MyClient(source_p))
|
|
who = find_named_person(user);
|
|
else
|
|
who = find_person(user);
|
|
|
|
if(chasing)
|
|
*chasing = 0;
|
|
|
|
if(who || IsDigit(*user))
|
|
return who;
|
|
|
|
if(!(who = whowas_get_history(user, (long) KILLCHASETIMELIMIT)))
|
|
{
|
|
sendto_one_numeric(source_p, ERR_NOSUCHNICK,
|
|
form_str(ERR_NOSUCHNICK), user);
|
|
return (NULL);
|
|
}
|
|
if(chasing)
|
|
*chasing = 1;
|
|
return who;
|
|
}
|
|
|
|
/*
|
|
* get_client_name - Return the name of the client
|
|
* for various tracking and
|
|
* admin purposes. The main purpose of this function is to
|
|
* return the "socket host" name of the client, if that
|
|
* differs from the advertised name (other than case).
|
|
* But, this can be used to any client structure.
|
|
*
|
|
* NOTE 1:
|
|
* Watch out the allocation of "nbuf", if either source_p->name
|
|
* or source_p->sockhost gets changed into pointers instead of
|
|
* directly allocated within the structure...
|
|
*
|
|
* NOTE 2:
|
|
* Function return either a pointer to the structure (source_p) or
|
|
* to internal buffer (nbuf). *NEVER* use the returned pointer
|
|
* to modify what it points!!!
|
|
*/
|
|
|
|
const char *
|
|
get_client_name(struct Client *client, int showip)
|
|
{
|
|
static char nbuf[HOSTLEN * 2 + USERLEN + 5];
|
|
|
|
s_assert(NULL != client);
|
|
if(client == NULL)
|
|
return NULL;
|
|
|
|
if(MyConnect(client))
|
|
{
|
|
if(!irccmp(client->name, client->host))
|
|
return client->name;
|
|
|
|
if(ConfigFileEntry.hide_spoof_ips &&
|
|
showip == SHOW_IP && IsIPSpoof(client))
|
|
showip = MASK_IP;
|
|
if(IsAnyServer(client))
|
|
showip = MASK_IP;
|
|
|
|
/* And finally, let's get the host information, ip or name */
|
|
switch (showip)
|
|
{
|
|
case SHOW_IP:
|
|
snprintf(nbuf, sizeof(nbuf), "%s[%s@%s]",
|
|
client->name, client->username,
|
|
client->sockhost);
|
|
break;
|
|
case MASK_IP:
|
|
snprintf(nbuf, sizeof(nbuf), "%s[%s@255.255.255.255]",
|
|
client->name, client->username);
|
|
break;
|
|
default:
|
|
snprintf(nbuf, sizeof(nbuf), "%s[%s@%s]",
|
|
client->name, client->username, client->host);
|
|
}
|
|
return nbuf;
|
|
}
|
|
|
|
/* As pointed out by Adel Mezibra
|
|
* Neph|l|m@EFnet. Was missing a return here.
|
|
*/
|
|
return client->name;
|
|
}
|
|
|
|
/* log_client_name()
|
|
*
|
|
* This version is the same as get_client_name, but doesnt contain the
|
|
* code that will hide IPs always. This should be used for logfiles.
|
|
*/
|
|
const char *
|
|
log_client_name(struct Client *target_p, int showip)
|
|
{
|
|
static char nbuf[HOSTLEN * 2 + USERLEN + 5];
|
|
|
|
if(target_p == NULL)
|
|
return NULL;
|
|
|
|
if(MyConnect(target_p))
|
|
{
|
|
if(irccmp(target_p->name, target_p->host) == 0)
|
|
return target_p->name;
|
|
|
|
switch (showip)
|
|
{
|
|
case SHOW_IP:
|
|
snprintf(nbuf, sizeof(nbuf), "%s[%s@%s]", target_p->name,
|
|
target_p->username, target_p->sockhost);
|
|
break;
|
|
|
|
default:
|
|
snprintf(nbuf, sizeof(nbuf), "%s[%s@%s]", target_p->name,
|
|
target_p->username, target_p->host);
|
|
}
|
|
|
|
return nbuf;
|
|
}
|
|
|
|
return target_p->name;
|
|
}
|
|
|
|
/* is_remote_connect - Returns whether a server was /connect'ed by a remote
|
|
* oper (send notices netwide) */
|
|
int
|
|
is_remote_connect(struct Client *client_p)
|
|
{
|
|
struct Client *oper;
|
|
|
|
if (client_p->serv == NULL)
|
|
return FALSE;
|
|
oper = find_named_person(client_p->serv->by);
|
|
return oper != NULL && IsOper(oper) && !MyConnect(oper);
|
|
}
|
|
|
|
static void
|
|
free_exited_clients(void *unused)
|
|
{
|
|
rb_dlink_node *ptr, *next;
|
|
struct Client *target_p;
|
|
|
|
RB_DLINK_FOREACH_SAFE(ptr, next, dead_list.head)
|
|
{
|
|
target_p = ptr->data;
|
|
|
|
#ifdef DEBUG_EXITED_CLIENTS
|
|
{
|
|
struct abort_client *abt;
|
|
rb_dlink_node *aptr;
|
|
int found = 0;
|
|
|
|
RB_DLINK_FOREACH(aptr, abort_list.head)
|
|
{
|
|
abt = aptr->data;
|
|
if(abt->client == target_p)
|
|
{
|
|
s_assert(0);
|
|
sendto_realops_snomask(SNO_GENERAL, L_ALL,
|
|
"On abort_list: %s stat: %u flags: %u/%u handler: %c",
|
|
target_p->name, (unsigned int) target_p->status,
|
|
target_p->flags, target_p->flags2, target_p->handler);
|
|
sendto_realops_snomask(SNO_GENERAL, L_ALL,
|
|
"Please report this to the charybdis developers!");
|
|
found++;
|
|
}
|
|
}
|
|
|
|
if(found)
|
|
{
|
|
rb_dlinkDestroy(ptr, &dead_list);
|
|
continue;
|
|
}
|
|
}
|
|
#endif
|
|
|
|
if(ptr->data == NULL)
|
|
{
|
|
sendto_realops_snomask(SNO_GENERAL, L_ALL,
|
|
"Warning: null client on dead_list!");
|
|
rb_dlinkDestroy(ptr, &dead_list);
|
|
continue;
|
|
}
|
|
release_client_state(target_p);
|
|
free_client(target_p);
|
|
rb_dlinkDestroy(ptr, &dead_list);
|
|
}
|
|
|
|
#ifdef DEBUG_EXITED_CLIENTS
|
|
RB_DLINK_FOREACH_SAFE(ptr, next, dead_remote_list.head)
|
|
{
|
|
target_p = ptr->data;
|
|
|
|
if(ptr->data == NULL)
|
|
{
|
|
sendto_realops_snomask(SNO_GENERAL, L_ALL,
|
|
"Warning: null client on dead_list!");
|
|
rb_dlinkDestroy(ptr, &dead_list);
|
|
continue;
|
|
}
|
|
release_client_state(target_p);
|
|
free_client(target_p);
|
|
rb_dlinkDestroy(ptr, &dead_remote_list);
|
|
}
|
|
#endif
|
|
|
|
}
|
|
|
|
/*
|
|
** Remove all clients that depend on source_p; assumes all (S)QUITs have
|
|
** already been sent. we make sure to exit a server's dependent clients
|
|
** and servers before the server itself; exit_one_client takes care of
|
|
** actually removing things off llists. tweaked from +CSr31 -orabidoo
|
|
*/
|
|
/*
|
|
* added sanity test code.... source_p->serv might be NULL...
|
|
*/
|
|
static void
|
|
recurse_remove_clients(struct Client *source_p, const char *comment)
|
|
{
|
|
struct Client *target_p;
|
|
rb_dlink_node *ptr, *ptr_next;
|
|
|
|
if(IsMe(source_p))
|
|
return;
|
|
|
|
if(source_p->serv == NULL) /* oooops. uh this is actually a major bug */
|
|
return;
|
|
|
|
/* this is very ugly, but it saves cpu :P */
|
|
if(ConfigFileEntry.nick_delay > 0)
|
|
{
|
|
RB_DLINK_FOREACH_SAFE(ptr, ptr_next, source_p->serv->users.head)
|
|
{
|
|
target_p = ptr->data;
|
|
target_p->flags |= FLAGS_KILLED;
|
|
add_nd_entry(target_p->name);
|
|
|
|
if(!IsDead(target_p) && !IsClosing(target_p))
|
|
exit_remote_client(NULL, target_p, &me, comment);
|
|
}
|
|
}
|
|
else
|
|
{
|
|
RB_DLINK_FOREACH_SAFE(ptr, ptr_next, source_p->serv->users.head)
|
|
{
|
|
target_p = ptr->data;
|
|
target_p->flags |= FLAGS_KILLED;
|
|
|
|
if(!IsDead(target_p) && !IsClosing(target_p))
|
|
exit_remote_client(NULL, target_p, &me, comment);
|
|
}
|
|
}
|
|
|
|
RB_DLINK_FOREACH_SAFE(ptr, ptr_next, source_p->serv->servers.head)
|
|
{
|
|
target_p = ptr->data;
|
|
recurse_remove_clients(target_p, comment);
|
|
qs_server(NULL, target_p, &me, comment);
|
|
}
|
|
}
|
|
|
|
/*
|
|
** Remove *everything* that depends on source_p, from all lists, and sending
|
|
** all necessary SQUITs. source_p itself is still on the lists,
|
|
** and its SQUITs have been sent except for the upstream one -orabidoo
|
|
*/
|
|
static void
|
|
remove_dependents(struct Client *client_p,
|
|
struct Client *source_p,
|
|
struct Client *from, const char *comment, const char *comment1)
|
|
{
|
|
struct Client *to;
|
|
rb_dlink_node *ptr, *next;
|
|
|
|
RB_DLINK_FOREACH_SAFE(ptr, next, serv_list.head)
|
|
{
|
|
to = ptr->data;
|
|
|
|
if(IsMe(to) || to == source_p->from || to == client_p)
|
|
continue;
|
|
|
|
sendto_one(to, "SQUIT %s :%s", get_id(source_p, to), comment);
|
|
}
|
|
|
|
recurse_remove_clients(source_p, comment1);
|
|
}
|
|
|
|
void
|
|
exit_aborted_clients(void *unused)
|
|
{
|
|
struct abort_client *abt;
|
|
rb_dlink_node *ptr, *next;
|
|
RB_DLINK_FOREACH_SAFE(ptr, next, abort_list.head)
|
|
{
|
|
abt = ptr->data;
|
|
|
|
#ifdef DEBUG_EXITED_CLIENTS
|
|
{
|
|
if(rb_dlinkFind(abt->client, &dead_list))
|
|
{
|
|
s_assert(0);
|
|
sendto_realops_snomask(SNO_GENERAL, L_ALL,
|
|
"On dead_list: %s stat: %u flags: %u/%u handler: %c",
|
|
abt->client->name, (unsigned int) abt->client->status,
|
|
abt->client->flags, abt->client->flags2, abt->client->handler);
|
|
sendto_realops_snomask(SNO_GENERAL, L_ALL,
|
|
"Please report this to the charybdis developers!");
|
|
continue;
|
|
}
|
|
}
|
|
#endif
|
|
|
|
s_assert(*((unsigned long*)abt->client) != 0xdeadbeef); /* This is lame but its a debug thing */
|
|
rb_dlinkDelete(ptr, &abort_list);
|
|
|
|
if(IsAnyServer(abt->client))
|
|
sendto_realops_snomask(SNO_GENERAL, L_ALL,
|
|
"Closing link to %s: %s",
|
|
abt->client->name, abt->notice);
|
|
|
|
/* its no longer on abort list - we *must* remove
|
|
* FLAGS_CLOSING otherwise exit_client() will not run --fl
|
|
*/
|
|
abt->client->flags &= ~FLAGS_CLOSING;
|
|
exit_client(abt->client, abt->client, &me, abt->notice);
|
|
rb_free(abt);
|
|
}
|
|
}
|
|
|
|
|
|
/*
|
|
* dead_link - Adds client to a list of clients that need an exit_client()
|
|
*/
|
|
void
|
|
dead_link(struct Client *client_p, int sendqex)
|
|
{
|
|
struct abort_client *abt;
|
|
|
|
s_assert(!IsMe(client_p));
|
|
if(IsDead(client_p) || IsClosing(client_p) || IsMe(client_p))
|
|
return;
|
|
|
|
abt = (struct abort_client *) rb_malloc(sizeof(struct abort_client));
|
|
|
|
if(sendqex)
|
|
rb_strlcpy(abt->notice, "Max SendQ exceeded", sizeof(abt->notice));
|
|
else
|
|
snprintf(abt->notice, sizeof(abt->notice), "Write error: %s", strerror(errno));
|
|
|
|
abt->client = client_p;
|
|
SetIOError(client_p);
|
|
SetDead(client_p);
|
|
SetClosing(client_p);
|
|
rb_dlinkAdd(abt, &abt->node, &abort_list);
|
|
}
|
|
|
|
|
|
/* This does the remove of the user from channels..local or remote */
|
|
static inline void
|
|
exit_generic_client(struct Client *client_p, struct Client *source_p, struct Client *from,
|
|
const char *comment)
|
|
{
|
|
rb_dlink_node *ptr, *next_ptr;
|
|
|
|
if(IsOper(source_p))
|
|
rb_dlinkFindDestroy(source_p, &oper_list);
|
|
|
|
sendto_common_channels_local(source_p, NOCAPS, NOCAPS, ":%s!%s@%s QUIT :%s",
|
|
source_p->name,
|
|
source_p->username, source_p->host, comment);
|
|
|
|
remove_user_from_channels(source_p);
|
|
|
|
/* Should not be in any channels now */
|
|
s_assert(source_p->user->channel.head == NULL);
|
|
|
|
/* Clean up invitefield */
|
|
RB_DLINK_FOREACH_SAFE(ptr, next_ptr, source_p->user->invited.head)
|
|
{
|
|
del_invite(ptr->data, source_p);
|
|
}
|
|
|
|
/* Clean up allow lists */
|
|
del_all_accepts(source_p);
|
|
|
|
whowas_add_history(source_p, 0);
|
|
whowas_off_history(source_p);
|
|
|
|
monitor_signoff(source_p);
|
|
|
|
if(has_id(source_p))
|
|
del_from_id_hash(source_p->id, source_p);
|
|
|
|
del_from_hostname_hash(source_p->orighost, source_p);
|
|
del_from_client_hash(source_p->name, source_p);
|
|
remove_client_from_list(source_p);
|
|
}
|
|
|
|
/*
|
|
* Assumes IsPerson(source_p) && !MyConnect(source_p)
|
|
*/
|
|
|
|
static int
|
|
exit_remote_client(struct Client *client_p, struct Client *source_p, struct Client *from,
|
|
const char *comment)
|
|
{
|
|
exit_generic_client(client_p, source_p, from, comment);
|
|
|
|
if(source_p->servptr && source_p->servptr->serv)
|
|
{
|
|
rb_dlinkDelete(&source_p->lnode, &source_p->servptr->serv->users);
|
|
}
|
|
|
|
if((source_p->flags & FLAGS_KILLED) == 0)
|
|
{
|
|
sendto_server(client_p, NULL, CAP_TS6, NOCAPS,
|
|
":%s QUIT :%s", use_id(source_p), comment);
|
|
}
|
|
|
|
SetDead(source_p);
|
|
#ifdef DEBUG_EXITED_CLIENTS
|
|
rb_dlinkAddAlloc(source_p, &dead_remote_list);
|
|
#else
|
|
rb_dlinkAddAlloc(source_p, &dead_list);
|
|
#endif
|
|
return(CLIENT_EXITED);
|
|
}
|
|
|
|
/*
|
|
* This assumes IsUnknown(source_p) == true and MyConnect(source_p) == true
|
|
*/
|
|
|
|
static int
|
|
exit_unknown_client(struct Client *client_p, struct Client *source_p, struct Client *from,
|
|
const char *comment)
|
|
{
|
|
authd_abort_client(client_p);
|
|
rb_dlinkDelete(&source_p->localClient->tnode, &unknown_list);
|
|
|
|
if(!IsIOError(source_p))
|
|
sendto_one(source_p, "ERROR :Closing Link: %s (%s)",
|
|
source_p->user != NULL ? source_p->host : "127.0.0.1",
|
|
comment);
|
|
|
|
close_connection(source_p);
|
|
|
|
if(has_id(source_p))
|
|
del_from_id_hash(source_p->id, source_p);
|
|
|
|
del_from_hostname_hash(source_p->host, source_p);
|
|
del_from_client_hash(source_p->name, source_p);
|
|
remove_client_from_list(source_p);
|
|
SetDead(source_p);
|
|
rb_dlinkAddAlloc(source_p, &dead_list);
|
|
|
|
/* Note that we don't need to add unknowns to the dead_list */
|
|
return(CLIENT_EXITED);
|
|
}
|
|
|
|
static int
|
|
exit_remote_server(struct Client *client_p, struct Client *source_p, struct Client *from,
|
|
const char *comment)
|
|
{
|
|
static char comment1[(HOSTLEN*2)+2];
|
|
static char newcomment[BUFSIZE];
|
|
struct Client *target_p;
|
|
|
|
if(ConfigServerHide.flatten_links)
|
|
strcpy(comment1, "*.net *.split");
|
|
else
|
|
{
|
|
strcpy(comment1, source_p->servptr->name);
|
|
strcat(comment1, " ");
|
|
strcat(comment1, source_p->name);
|
|
}
|
|
if (IsPerson(from))
|
|
snprintf(newcomment, sizeof(newcomment), "by %s: %s",
|
|
from->name, comment);
|
|
|
|
if(source_p->serv != NULL)
|
|
remove_dependents(client_p, source_p, from, IsPerson(from) ? newcomment : comment, comment1);
|
|
|
|
if(source_p->servptr && source_p->servptr->serv)
|
|
rb_dlinkDelete(&source_p->lnode, &source_p->servptr->serv->servers);
|
|
else
|
|
s_assert(0);
|
|
|
|
rb_dlinkFindDestroy(source_p, &global_serv_list);
|
|
target_p = source_p->from;
|
|
|
|
if(target_p != NULL && IsServer(target_p) && target_p != client_p &&
|
|
!IsMe(target_p) && (source_p->flags & FLAGS_KILLED) == 0)
|
|
{
|
|
sendto_one(target_p, ":%s SQUIT %s :%s",
|
|
get_id(from, target_p), get_id(source_p, target_p),
|
|
comment);
|
|
}
|
|
|
|
if(has_id(source_p))
|
|
del_from_id_hash(source_p->id, source_p);
|
|
|
|
del_from_client_hash(source_p->name, source_p);
|
|
remove_client_from_list(source_p);
|
|
scache_split(source_p->serv->nameinfo);
|
|
|
|
SetDead(source_p);
|
|
#ifdef DEBUG_EXITED_CLIENTS
|
|
rb_dlinkAddAlloc(source_p, &dead_remote_list);
|
|
#else
|
|
rb_dlinkAddAlloc(source_p, &dead_list);
|
|
#endif
|
|
return 0;
|
|
}
|
|
|
|
static int
|
|
qs_server(struct Client *client_p, struct Client *source_p, struct Client *from,
|
|
const char *comment)
|
|
{
|
|
if(source_p->servptr && source_p->servptr->serv)
|
|
rb_dlinkDelete(&source_p->lnode, &source_p->servptr->serv->servers);
|
|
else
|
|
s_assert(0);
|
|
|
|
rb_dlinkFindDestroy(source_p, &global_serv_list);
|
|
|
|
if(has_id(source_p))
|
|
del_from_id_hash(source_p->id, source_p);
|
|
|
|
del_from_client_hash(source_p->name, source_p);
|
|
remove_client_from_list(source_p);
|
|
scache_split(source_p->serv->nameinfo);
|
|
|
|
SetDead(source_p);
|
|
rb_dlinkAddAlloc(source_p, &dead_list);
|
|
return 0;
|
|
}
|
|
|
|
static int
|
|
exit_local_server(struct Client *client_p, struct Client *source_p, struct Client *from,
|
|
const char *comment)
|
|
{
|
|
static char comment1[(HOSTLEN*2)+2];
|
|
static char newcomment[BUFSIZE];
|
|
unsigned int sendk, recvk;
|
|
|
|
rb_dlinkDelete(&source_p->localClient->tnode, &serv_list);
|
|
rb_dlinkFindDestroy(source_p, &global_serv_list);
|
|
|
|
sendk = source_p->localClient->sendK;
|
|
recvk = source_p->localClient->receiveK;
|
|
|
|
/* Always show source here, so the server notices show
|
|
* which side initiated the split -- jilles
|
|
*/
|
|
snprintf(newcomment, sizeof(newcomment), "by %s: %s",
|
|
from == source_p ? me.name : from->name, comment);
|
|
if (!IsIOError(source_p))
|
|
sendto_one(source_p, "SQUIT %s :%s", use_id(source_p),
|
|
newcomment);
|
|
if(client_p != NULL && source_p != client_p && !IsIOError(source_p))
|
|
{
|
|
sendto_one(source_p, "ERROR :Closing Link: 127.0.0.1 %s (%s)",
|
|
source_p->name, comment);
|
|
}
|
|
|
|
if(source_p->servptr && source_p->servptr->serv)
|
|
rb_dlinkDelete(&source_p->lnode, &source_p->servptr->serv->servers);
|
|
else
|
|
s_assert(0);
|
|
|
|
|
|
close_connection(source_p);
|
|
|
|
if(ConfigServerHide.flatten_links)
|
|
strcpy(comment1, "*.net *.split");
|
|
else
|
|
{
|
|
strcpy(comment1, source_p->servptr->name);
|
|
strcat(comment1, " ");
|
|
strcat(comment1, source_p->name);
|
|
}
|
|
|
|
if(source_p->serv != NULL)
|
|
remove_dependents(client_p, source_p, from, IsPerson(from) ? newcomment : comment, comment1);
|
|
|
|
sendto_realops_snomask(SNO_GENERAL, L_ALL, "%s was connected"
|
|
" for %ld seconds. %d/%d sendK/recvK.",
|
|
source_p->name, (long) rb_current_time() - source_p->localClient->firsttime, sendk, recvk);
|
|
|
|
ilog(L_SERVER, "%s was connected for %ld seconds. %d/%d sendK/recvK.",
|
|
source_p->name, (long) rb_current_time() - source_p->localClient->firsttime, sendk, recvk);
|
|
|
|
if(has_id(source_p))
|
|
del_from_id_hash(source_p->id, source_p);
|
|
|
|
del_from_client_hash(source_p->name, source_p);
|
|
remove_client_from_list(source_p);
|
|
scache_split(source_p->serv->nameinfo);
|
|
|
|
SetDead(source_p);
|
|
rb_dlinkAddAlloc(source_p, &dead_list);
|
|
return 0;
|
|
}
|
|
|
|
|
|
/*
|
|
* This assumes IsPerson(source_p) == true && MyConnect(source_p) == true
|
|
*/
|
|
|
|
static int
|
|
exit_local_client(struct Client *client_p, struct Client *source_p, struct Client *from,
|
|
const char *comment)
|
|
{
|
|
unsigned long on_for;
|
|
char tbuf[26];
|
|
|
|
exit_generic_client(client_p, source_p, from, comment);
|
|
clear_monitor(source_p);
|
|
|
|
s_assert(IsPerson(source_p));
|
|
rb_dlinkDelete(&source_p->localClient->tnode, &lclient_list);
|
|
rb_dlinkDelete(&source_p->lnode, &me.serv->users);
|
|
|
|
if(IsOper(source_p))
|
|
rb_dlinkFindDestroy(source_p, &local_oper_list);
|
|
|
|
sendto_realops_snomask(SNO_CCONN, L_ALL,
|
|
"Client exiting: %s (%s@%s) [%s] [%s]",
|
|
source_p->name,
|
|
source_p->username, source_p->host, comment,
|
|
show_ip(NULL, source_p) ? source_p->sockhost : "255.255.255.255");
|
|
|
|
sendto_realops_snomask(SNO_CCONNEXT, L_ALL,
|
|
"CLIEXIT %s %s %s %s 0 %s",
|
|
source_p->name, source_p->username, source_p->host,
|
|
show_ip(NULL, source_p) ? source_p->sockhost : "255.255.255.255",
|
|
comment);
|
|
|
|
on_for = rb_current_time() - source_p->localClient->firsttime;
|
|
|
|
ilog(L_USER, "%s (%3lu:%02lu:%02lu): %s!%s@%s %s %d/%d",
|
|
rb_ctime(rb_current_time(), tbuf, sizeof(tbuf)), on_for / 3600,
|
|
(on_for % 3600) / 60, on_for % 60,
|
|
source_p->name, source_p->username, source_p->host,
|
|
source_p->sockhost,
|
|
source_p->localClient->sendK, source_p->localClient->receiveK);
|
|
|
|
sendto_one(source_p, "ERROR :Closing Link: %s (%s)", source_p->host, comment);
|
|
close_connection(source_p);
|
|
|
|
if((source_p->flags & FLAGS_KILLED) == 0)
|
|
{
|
|
sendto_server(client_p, NULL, CAP_TS6, NOCAPS,
|
|
":%s QUIT :%s", use_id(source_p), comment);
|
|
}
|
|
|
|
SetDead(source_p);
|
|
rb_dlinkAddAlloc(source_p, &dead_list);
|
|
return(CLIENT_EXITED);
|
|
}
|
|
|
|
|
|
/*
|
|
** exit_client - This is old "m_bye". Name changed, because this is not a
|
|
** protocol function, but a general server utility function.
|
|
**
|
|
** This function exits a client of *any* type (user, server, etc)
|
|
** from this server. Also, this generates all necessary prototol
|
|
** messages that this exit may cause.
|
|
**
|
|
** 1) If the client is a local client, then this implicitly
|
|
** exits all other clients depending on this connection (e.g.
|
|
** remote clients having 'from'-field that points to this.
|
|
**
|
|
** 2) If the client is a remote client, then only this is exited.
|
|
**
|
|
** For convenience, this function returns a suitable value for
|
|
** m_function return value:
|
|
**
|
|
** CLIENT_EXITED if (client_p == source_p)
|
|
** 0 if (client_p != source_p)
|
|
*/
|
|
int
|
|
exit_client(struct Client *client_p, /* The local client originating the
|
|
* exit or NULL, if this exit is
|
|
* generated by this server for
|
|
* internal reasons.
|
|
* This will not get any of the
|
|
* generated messages. */
|
|
struct Client *source_p, /* Client exiting */
|
|
struct Client *from, /* Client firing off this Exit,
|
|
* never NULL! */
|
|
const char *comment /* Reason for the exit */
|
|
)
|
|
{
|
|
hook_data_client_exit hdata;
|
|
if(IsClosing(source_p))
|
|
return -1;
|
|
|
|
/* note, this HAS to be here, when we exit a client we attempt to
|
|
* send them data, if this generates a write error we must *not* add
|
|
* them to the abort list --fl
|
|
*/
|
|
SetClosing(source_p);
|
|
|
|
hdata.local_link = client_p;
|
|
hdata.target = source_p;
|
|
hdata.from = from;
|
|
hdata.comment = comment;
|
|
call_hook(h_client_exit, &hdata);
|
|
|
|
if(MyConnect(source_p))
|
|
{
|
|
/* Local clients of various types */
|
|
if(IsPerson(source_p))
|
|
return exit_local_client(client_p, source_p, from, comment);
|
|
else if(IsServer(source_p))
|
|
return exit_local_server(client_p, source_p, from, comment);
|
|
/* IsUnknown || IsConnecting || IsHandShake */
|
|
else if(!IsReject(source_p))
|
|
return exit_unknown_client(client_p, source_p, from, comment);
|
|
}
|
|
else
|
|
{
|
|
/* Remotes */
|
|
if(IsPerson(source_p))
|
|
return exit_remote_client(client_p, source_p, from, comment);
|
|
else if(IsServer(source_p))
|
|
return exit_remote_server(client_p, source_p, from, comment);
|
|
}
|
|
|
|
return -1;
|
|
}
|
|
|
|
/*
|
|
* Count up local client memory
|
|
*/
|
|
|
|
/* XXX one common Client list now */
|
|
void
|
|
count_local_client_memory(size_t * count, size_t * local_client_memory_used)
|
|
{
|
|
size_t lusage;
|
|
rb_bh_usage(lclient_heap, count, NULL, &lusage, NULL);
|
|
*local_client_memory_used = lusage + (*count * (sizeof(void *) + sizeof(struct Client)));
|
|
}
|
|
|
|
/*
|
|
* Count up remote client memory
|
|
*/
|
|
void
|
|
count_remote_client_memory(size_t * count, size_t * remote_client_memory_used)
|
|
{
|
|
size_t lcount, rcount;
|
|
rb_bh_usage(lclient_heap, &lcount, NULL, NULL, NULL);
|
|
rb_bh_usage(client_heap, &rcount, NULL, NULL, NULL);
|
|
*count = rcount - lcount;
|
|
*remote_client_memory_used = *count * (sizeof(void *) + sizeof(struct Client));
|
|
}
|
|
|
|
|
|
/*
|
|
* accept processing, this adds a form of "caller ID" to ircd
|
|
*
|
|
* If a client puts themselves into "caller ID only" mode,
|
|
* only clients that match a client pointer they have put on
|
|
* the accept list will be allowed to message them.
|
|
*
|
|
* [ source.on_allow_list ] -> [ target1 ] -> [ target2 ]
|
|
*
|
|
* [target.allow_list] -> [ source1 ] -> [source2 ]
|
|
*
|
|
* i.e. a target will have a link list of source pointers it will allow
|
|
* each source client then has a back pointer pointing back
|
|
* to the client that has it on its accept list.
|
|
* This allows for exit_one_client to remove these now bogus entries
|
|
* from any client having an accept on them.
|
|
*/
|
|
/*
|
|
* del_all_accepts
|
|
*
|
|
* inputs - pointer to exiting client
|
|
* output - NONE
|
|
* side effects - Walk through given clients allow_list and on_allow_list
|
|
* remove all references to this client
|
|
*/
|
|
void
|
|
del_all_accepts(struct Client *client_p)
|
|
{
|
|
rb_dlink_node *ptr;
|
|
rb_dlink_node *next_ptr;
|
|
struct Client *target_p;
|
|
|
|
if(MyClient(client_p) && client_p->localClient->allow_list.head)
|
|
{
|
|
/* clear this clients accept list, and remove them from
|
|
* everyones on_accept_list
|
|
*/
|
|
RB_DLINK_FOREACH_SAFE(ptr, next_ptr, client_p->localClient->allow_list.head)
|
|
{
|
|
target_p = ptr->data;
|
|
rb_dlinkFindDestroy(client_p, &target_p->on_allow_list);
|
|
rb_dlinkDestroy(ptr, &client_p->localClient->allow_list);
|
|
}
|
|
}
|
|
|
|
/* remove this client from everyones accept list */
|
|
RB_DLINK_FOREACH_SAFE(ptr, next_ptr, client_p->on_allow_list.head)
|
|
{
|
|
target_p = ptr->data;
|
|
rb_dlinkFindDestroy(client_p, &target_p->localClient->allow_list);
|
|
rb_dlinkDestroy(ptr, &client_p->on_allow_list);
|
|
}
|
|
}
|
|
|
|
/*
|
|
* show_ip() - asks if the true IP should be shown when source is
|
|
* asking for info about target
|
|
*
|
|
* Inputs - source_p who is asking
|
|
* - target_p who do we want the info on
|
|
* Output - returns 1 if clear IP can be shown, otherwise 0
|
|
* Side Effects - none
|
|
*/
|
|
|
|
int
|
|
show_ip(struct Client *source_p, struct Client *target_p)
|
|
{
|
|
if(IsAnyServer(target_p))
|
|
{
|
|
return 0;
|
|
}
|
|
else if(IsIPSpoof(target_p))
|
|
{
|
|
/* source == NULL indicates message is being sent
|
|
* to local opers.
|
|
*/
|
|
if(!ConfigFileEntry.hide_spoof_ips &&
|
|
(source_p == NULL || MyOper(source_p)))
|
|
return 1;
|
|
return 0;
|
|
}
|
|
else if(IsDynSpoof(target_p) && (source_p != NULL && !IsOper(source_p)))
|
|
return 0;
|
|
else
|
|
return 1;
|
|
}
|
|
|
|
int
|
|
show_ip_conf(struct ConfItem *aconf, struct Client *source_p)
|
|
{
|
|
if(IsConfDoSpoofIp(aconf))
|
|
{
|
|
if(!ConfigFileEntry.hide_spoof_ips && MyOper(source_p))
|
|
return 1;
|
|
|
|
return 0;
|
|
}
|
|
else
|
|
return 1;
|
|
}
|
|
|
|
int
|
|
show_ip_whowas(struct Whowas *whowas, struct Client *source_p)
|
|
{
|
|
if(whowas->flags & WHOWAS_IP_SPOOFING)
|
|
if(ConfigFileEntry.hide_spoof_ips || !MyOper(source_p))
|
|
return 0;
|
|
if(whowas->flags & WHOWAS_DYNSPOOF)
|
|
if(!IsOper(source_p))
|
|
return 0;
|
|
return 1;
|
|
}
|
|
|
|
/*
|
|
* make_user
|
|
*
|
|
* inputs - pointer to client struct
|
|
* output - pointer to struct User
|
|
* side effects - add's an User information block to a client
|
|
* if it was not previously allocated.
|
|
*/
|
|
struct User *
|
|
make_user(struct Client *client_p)
|
|
{
|
|
struct User *user;
|
|
|
|
user = client_p->user;
|
|
if(!user)
|
|
{
|
|
user = (struct User *) rb_bh_alloc(user_heap);
|
|
user->refcnt = 1;
|
|
client_p->user = user;
|
|
}
|
|
return user;
|
|
}
|
|
|
|
/*
|
|
* make_server
|
|
*
|
|
* inputs - pointer to client struct
|
|
* output - pointer to server_t
|
|
* side effects - add's an Server information block to a client
|
|
* if it was not previously allocated.
|
|
*/
|
|
struct Server *
|
|
make_server(struct Client *client_p)
|
|
{
|
|
struct Server *serv = client_p->serv;
|
|
|
|
if(!serv)
|
|
{
|
|
serv = (struct Server *) rb_malloc(sizeof(struct Server));
|
|
client_p->serv = serv;
|
|
}
|
|
return client_p->serv;
|
|
}
|
|
|
|
/*
|
|
* free_user
|
|
*
|
|
* inputs - pointer to user struct
|
|
* - pointer to client struct
|
|
* output - none
|
|
* side effects - Decrease user reference count by one and release block,
|
|
* if count reaches 0
|
|
*/
|
|
void
|
|
free_user(struct User *user, struct Client *client_p)
|
|
{
|
|
free_away(client_p);
|
|
|
|
if(--user->refcnt <= 0)
|
|
{
|
|
if(user->away)
|
|
rb_free((char *) user->away);
|
|
/*
|
|
* sanity check
|
|
*/
|
|
if(user->refcnt < 0 || user->invited.head || user->channel.head)
|
|
{
|
|
sendto_realops_snomask(SNO_GENERAL, L_ALL,
|
|
"* %p user (%s!%s@%s) %p %p %p %lu %d *",
|
|
client_p,
|
|
client_p ? client_p->
|
|
name : "<noname>",
|
|
client_p->username,
|
|
client_p->host,
|
|
user,
|
|
user->invited.head,
|
|
user->channel.head,
|
|
rb_dlink_list_length(&user->channel),
|
|
user->refcnt);
|
|
s_assert(!user->refcnt);
|
|
s_assert(!user->invited.head);
|
|
s_assert(!user->channel.head);
|
|
}
|
|
|
|
rb_bh_free(user_heap, user);
|
|
}
|
|
}
|
|
|
|
void
|
|
allocate_away(struct Client *client_p)
|
|
{
|
|
if(client_p->user->away == NULL)
|
|
client_p->user->away = rb_bh_alloc(away_heap);
|
|
}
|
|
|
|
|
|
void
|
|
free_away(struct Client *client_p)
|
|
{
|
|
if(client_p->user != NULL && client_p->user->away != NULL) {
|
|
rb_bh_free(away_heap, client_p->user->away);
|
|
client_p->user->away = NULL;
|
|
}
|
|
}
|
|
|
|
void
|
|
init_uid(void)
|
|
{
|
|
int i;
|
|
|
|
for(i = 0; i < 3; i++)
|
|
current_uid[i] = me.id[i];
|
|
|
|
for(i = 3; i < 9; i++)
|
|
current_uid[i] = 'A';
|
|
|
|
current_uid[9] = '\0';
|
|
}
|
|
|
|
|
|
char *
|
|
generate_uid(void)
|
|
{
|
|
static int flipped = 0;
|
|
int i;
|
|
|
|
uid_restart:
|
|
for(i = 8; i > 3; i--)
|
|
{
|
|
if(current_uid[i] == 'Z')
|
|
{
|
|
current_uid[i] = '0';
|
|
goto out;
|
|
}
|
|
else if(current_uid[i] != '9')
|
|
{
|
|
current_uid[i]++;
|
|
goto out;
|
|
}
|
|
else
|
|
current_uid[i] = 'A';
|
|
}
|
|
|
|
/* if this next if() triggers, we're fucked. */
|
|
if(current_uid[3] == 'Z')
|
|
{
|
|
current_uid[i] = 'A';
|
|
flipped = 1;
|
|
}
|
|
else
|
|
current_uid[i]++;
|
|
out:
|
|
/* if this happens..well, i'm not sure what to say, but lets handle it correctly */
|
|
if(rb_unlikely(flipped))
|
|
{
|
|
/* this slows down uid generation a bit... */
|
|
if(find_id(current_uid) != NULL)
|
|
goto uid_restart;
|
|
}
|
|
return current_uid;
|
|
}
|
|
|
|
/*
|
|
* close_connection
|
|
* Close the physical connection. This function must make
|
|
* MyConnect(client_p) == FALSE, and set client_p->from == NULL.
|
|
*/
|
|
void
|
|
close_connection(struct Client *client_p)
|
|
{
|
|
s_assert(client_p != NULL);
|
|
if(client_p == NULL)
|
|
return;
|
|
|
|
s_assert(MyConnect(client_p));
|
|
if(!MyConnect(client_p))
|
|
return;
|
|
|
|
if(IsServer(client_p))
|
|
{
|
|
struct server_conf *server_p;
|
|
|
|
ServerStats.is_sv++;
|
|
ServerStats.is_sbs += client_p->localClient->sendB;
|
|
ServerStats.is_sbr += client_p->localClient->receiveB;
|
|
ServerStats.is_sti += (unsigned long long)(rb_current_time() - client_p->localClient->firsttime);
|
|
|
|
/*
|
|
* If the connection has been up for a long amount of time, schedule
|
|
* a 'quick' reconnect, else reset the next-connect cycle.
|
|
*/
|
|
if((server_p = find_server_conf(client_p->name)) != NULL)
|
|
{
|
|
/*
|
|
* Reschedule a faster reconnect, if this was a automatically
|
|
* connected configuration entry. (Note that if we have had
|
|
* a rehash in between, the status has been changed to
|
|
* CONF_ILLEGAL). But only do this if it was a "good" link.
|
|
*/
|
|
server_p->hold = time(NULL);
|
|
server_p->hold +=
|
|
(server_p->hold - client_p->localClient->lasttime >
|
|
HANGONGOODLINK) ? HANGONRETRYDELAY : ConFreq(server_p->class);
|
|
}
|
|
|
|
}
|
|
else if(IsClient(client_p))
|
|
{
|
|
ServerStats.is_cl++;
|
|
ServerStats.is_cbs += client_p->localClient->sendB;
|
|
ServerStats.is_cbr += client_p->localClient->receiveB;
|
|
ServerStats.is_cti += (unsigned long long)(rb_current_time() - client_p->localClient->firsttime);
|
|
}
|
|
else
|
|
ServerStats.is_ni++;
|
|
|
|
client_release_connids(client_p);
|
|
|
|
if(client_p->localClient->F != NULL)
|
|
{
|
|
/* attempt to flush any pending dbufs. Evil, but .. -- adrian */
|
|
if(!IsIOError(client_p))
|
|
send_queued(client_p);
|
|
|
|
rb_close(client_p->localClient->F);
|
|
client_p->localClient->F = NULL;
|
|
}
|
|
|
|
rb_linebuf_donebuf(&client_p->localClient->buf_sendq);
|
|
rb_linebuf_donebuf(&client_p->localClient->buf_recvq);
|
|
detach_conf(client_p);
|
|
|
|
/* XXX shouldnt really be done here. */
|
|
detach_server_conf(client_p);
|
|
|
|
client_p->from = NULL; /* ...this should catch them! >:) --msa */
|
|
ClearMyConnect(client_p);
|
|
SetIOError(client_p);
|
|
}
|
|
|
|
|
|
|
|
void
|
|
error_exit_client(struct Client *client_p, int error)
|
|
{
|
|
/*
|
|
* ...hmm, with non-blocking sockets we might get
|
|
* here from quite valid reasons, although.. why
|
|
* would select report "data available" when there
|
|
* wasn't... so, this must be an error anyway... --msa
|
|
* actually, EOF occurs when read() returns 0 and
|
|
* in due course, select() returns that fd as ready
|
|
* for reading even though it ends up being an EOF. -avalon
|
|
*/
|
|
char errmsg[255];
|
|
int current_error = rb_get_sockerr(client_p->localClient->F);
|
|
|
|
SetIOError(client_p);
|
|
|
|
if(IsServer(client_p) || IsHandshake(client_p))
|
|
{
|
|
if(error == 0)
|
|
{
|
|
sendto_realops_snomask(SNO_GENERAL, is_remote_connect(client_p) && !IsServer(client_p) ? L_NETWIDE : L_ALL,
|
|
"Server %s closed the connection",
|
|
client_p->name);
|
|
|
|
ilog(L_SERVER, "Server %s closed the connection",
|
|
log_client_name(client_p, SHOW_IP));
|
|
}
|
|
else
|
|
{
|
|
sendto_realops_snomask(SNO_GENERAL, is_remote_connect(client_p) && !IsServer(client_p) ? L_NETWIDE : L_ALL,
|
|
"Lost connection to %s: %s",
|
|
client_p->name, strerror(current_error));
|
|
ilog(L_SERVER, "Lost connection to %s: %s",
|
|
log_client_name(client_p, SHOW_IP), strerror(current_error));
|
|
}
|
|
}
|
|
|
|
if(error == 0)
|
|
rb_strlcpy(errmsg, "Remote host closed the connection", sizeof(errmsg));
|
|
else
|
|
snprintf(errmsg, sizeof(errmsg), "Read error: %s", strerror(current_error));
|
|
|
|
exit_client(client_p, client_p, &me, errmsg);
|
|
}
|