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/*
Unix SMB/Netbios implementation.
Version 1.9.
connection claim routines
Copyright (C) Andrew Tridgell 1998
This program is free software; you can redistribute it and/or modify
it under the terms of the GNU General Public License as published by
the Free Software Foundation; either version 2 of the License, or
(at your option) any later version.
This program is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
GNU General Public License for more details.
You should have received a copy of the GNU General Public License
along with this program; if not, write to the Free Software
Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
*/
#include "includes.h"
extern fstring remote_machine;
extern int DEBUGLEVEL;
/****************************************************************************
delete a connection record
****************************************************************************/
BOOL yield_connection(connection_struct *conn,char *name,int max_connections)
{
struct connections_key key;
TDB_DATA kbuf;
TDB_CONTEXT *tdb;
tdb = tdb_open(lock_path("connections.tdb"), 0, O_RDWR | O_CREAT, 0644);
if (!tdb) return False;
DEBUG(3,("Yielding connection to %s\n",name));
ZERO_STRUCT(key);
key.pid = getpid();
if (conn) key.cnum = conn->cnum;
fstrcpy(key.name, name);
kbuf.dptr = (char *)&key;
kbuf.dsize = sizeof(key);
tdb_delete(tdb, kbuf);
tdb_close(tdb);
return(True);
}
/****************************************************************************
claim an entry in the connections database
****************************************************************************/
int delete_dead(TDB_CONTEXT *tdb, TDB_DATA kbuf, TDB_DATA dbuf)
{
struct connections_key key;
memcpy(&key, kbuf.dptr, sizeof(key));
if (!process_exists(key.pid)) tdb_delete(tdb, kbuf);
return 0;
}
/****************************************************************************
claim an entry in the connections database
****************************************************************************/
BOOL claim_connection(connection_struct *conn,char *name,int max_connections,BOOL Clear)
{
struct connections_key key;
struct connections_data crec;
TDB_DATA kbuf, dbuf;
TDB_CONTEXT *tdb;
extern int Client;
if (max_connections <= 0)
return(True);
tdb = tdb_open(lock_path("connections.tdb"), 0, O_RDWR | O_CREAT, 0644);
if (!tdb) return False;
DEBUG(5,("claiming %s %d\n",name,max_connections));
ZERO_STRUCT(key);
key.pid = getpid();
key.cnum = conn?conn->cnum:-1;
fstrcpy(key.name, name);
kbuf.dptr = (char *)&key;
kbuf.dsize = sizeof(key);
if (Clear) {
tdb_traverse(tdb, delete_dead);
}
/* fill in the crec */
ZERO_STRUCT(crec);
crec.magic = 0x280267;
crec.pid = getpid();
crec.cnum = conn?conn->cnum:-1;
if (conn) {
crec.uid = conn->uid;
crec.gid = conn->gid;
StrnCpy(crec.name,
lp_servicename(SNUM(conn)),sizeof(crec.name)-1);
}
crec.start = time(NULL);
StrnCpy(crec.machine,remote_machine,sizeof(crec.machine)-1);
StrnCpy(crec.addr,conn?conn->client_address:client_addr(Client),sizeof(crec.addr)-1);
dbuf.dptr = (char *)&crec;
dbuf.dsize = sizeof(crec);
if (tdb_store(tdb, kbuf, dbuf, TDB_REPLACE) != 0) return False;
tdb_close(tdb);
return True;
}
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