Sweden-Number/dlls/dnsapi/query.c

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/*
* DNS support
*
* Copyright (C) 2006 Hans Leidekker
*
* This library is free software; you can redistribute it and/or
* modify it under the terms of the GNU Lesser General Public
* License as published by the Free Software Foundation; either
* version 2.1 of the License, or (at your option) any later version.
*
* This library 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
* Lesser General Public License for more details.
*
* You should have received a copy of the GNU Lesser General Public
* License along with this library; if not, write to the Free Software
* Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301, USA
*/
#include "config.h"
#include "wine/port.h"
#include "wine/debug.h"
#include <stdarg.h>
#include <string.h>
#include <sys/types.h>
#ifdef HAVE_NETINET_IN_H
# include <netinet/in.h>
#endif
#ifdef HAVE_ARPA_NAMESER_H
# include <arpa/nameser.h>
#endif
#ifdef HAVE_RESOLV_H
# include <resolv.h>
#endif
#ifdef HAVE_NETDB_H
# include <netdb.h>
#endif
#include "windef.h"
#include "winbase.h"
#include "winerror.h"
#include "winnls.h"
#include "windns.h"
#include "dnsapi.h"
WINE_DEFAULT_DEBUG_CHANNEL(dnsapi);
#ifdef HAVE_RESOLV
static CRITICAL_SECTION resolver_cs;
static CRITICAL_SECTION_DEBUG resolver_cs_debug =
{
0, 0, &resolver_cs,
{ &resolver_cs_debug.ProcessLocksList,
&resolver_cs_debug.ProcessLocksList },
0, 0, { (DWORD_PTR)(__FILE__ ": resolver_cs") }
};
static CRITICAL_SECTION resolver_cs = { &resolver_cs_debug, -1, 0, 0, 0, 0 };
#define LOCK_RESOLVER() do { EnterCriticalSection( &resolver_cs ); } while (0)
#define UNLOCK_RESOLVER() do { LeaveCriticalSection( &resolver_cs ); } while (0)
/* the resolver lock must be held and res_init() must have been
* called before calling this function.
*/
static DNS_STATUS dns_get_serverlist( PIP4_ARRAY addrs, PDWORD len )
{
unsigned int i, size;
size = sizeof(IP4_ARRAY) + sizeof(IP4_ADDRESS) * (_res.nscount - 1);
if (!addrs || *len < size)
{
*len = size;
return ERROR_INSUFFICIENT_BUFFER;
}
addrs->AddrCount = _res.nscount;
for (i = 0; i < _res.nscount; i++)
addrs->AddrArray[i] = _res.nsaddr_list[i].sin_addr.s_addr;
return ERROR_SUCCESS;
}
#endif /* HAVE_RESOLV */
static DNS_STATUS dns_get_hostname_a( COMPUTER_NAME_FORMAT format,
LPSTR buffer, PDWORD len )
{
char name[256];
DWORD size = sizeof(name);
if (!GetComputerNameExA( format, name, &size ))
return DNS_ERROR_NAME_DOES_NOT_EXIST;
if (!buffer || (size = lstrlenA( name ) + 1) > *len)
{
*len = size;
return ERROR_INSUFFICIENT_BUFFER;
}
lstrcpyA( buffer, name );
return ERROR_SUCCESS;
}
static DNS_STATUS dns_get_hostname_w( COMPUTER_NAME_FORMAT format,
LPWSTR buffer, PDWORD len )
{
WCHAR name[256];
DWORD size = sizeof(name);
if (!GetComputerNameExW( format, name, &size ))
return DNS_ERROR_NAME_DOES_NOT_EXIST;
if (!buffer || (size = lstrlenW( name ) + 1) > *len)
{
*len = size;
return ERROR_INSUFFICIENT_BUFFER;
}
lstrcpyW( buffer, name );
return ERROR_SUCCESS;
}
/******************************************************************************
* DnsQueryConfig [DNSAPI.@]
*
*/
DNS_STATUS WINAPI DnsQueryConfig( DNS_CONFIG_TYPE config, DWORD flag, PWSTR adapter,
PVOID reserved, PVOID buffer, PDWORD len )
{
DNS_STATUS ret = ERROR_INVALID_PARAMETER;
TRACE( "(%d,0x%08lx,%s,%p,%p,%p)\n", config, flag, debugstr_w(adapter),
reserved, buffer, len );
if (!len) return ERROR_INVALID_PARAMETER;
switch (config)
{
case DnsConfigDnsServerList:
{
#ifdef HAVE_RESOLV
LOCK_RESOLVER();
res_init();
ret = dns_get_serverlist( (IP4_ARRAY *)buffer, len );
UNLOCK_RESOLVER();
break;
#else
WARN( "compiled without resolver support\n" );
break;
#endif
}
case DnsConfigHostName_A:
case DnsConfigHostName_UTF8:
return dns_get_hostname_a( ComputerNameDnsHostname, buffer, len );
case DnsConfigFullHostName_A:
case DnsConfigFullHostName_UTF8:
return dns_get_hostname_a( ComputerNameDnsFullyQualified, buffer, len );
case DnsConfigPrimaryDomainName_A:
case DnsConfigPrimaryDomainName_UTF8:
return dns_get_hostname_a( ComputerNameDnsDomain, buffer, len );
case DnsConfigHostName_W:
return dns_get_hostname_w( ComputerNameDnsHostname, buffer, len );
case DnsConfigFullHostName_W:
return dns_get_hostname_w( ComputerNameDnsFullyQualified, buffer, len );
case DnsConfigPrimaryDomainName_W:
return dns_get_hostname_w( ComputerNameDnsDomain, buffer, len );
case DnsConfigAdapterDomainName_A:
case DnsConfigAdapterDomainName_W:
case DnsConfigAdapterDomainName_UTF8:
case DnsConfigSearchList:
case DnsConfigAdapterInfo:
case DnsConfigPrimaryHostNameRegistrationEnabled:
case DnsConfigAdapterHostNameRegistrationEnabled:
case DnsConfigAddressRegistrationMaxCount:
FIXME( "unimplemented config type %d\n", config );
break;
default:
WARN( "unknown config type: %d\n", config );
break;
}
return ret;
}