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 <stdarg.h>
#include "windef.h"
#include "winbase.h"
#include "winerror.h"
#include "winnls.h"
#include "windns.h"
#include "nb30.h"
#include "ws2def.h"
#include "wine/debug.h"
#include "dnsapi.h"
WINE_DEFAULT_DEBUG_CHANNEL(dnsapi);
#define DEFAULT_TTL 1200
static DNS_STATUS do_query_netbios( PCSTR name, DNS_RECORDA **recp )
{
NCB ncb;
UCHAR ret;
DNS_RRSET rrset;
FIND_NAME_BUFFER *buffer;
FIND_NAME_HEADER *header;
DNS_RECORDA *record = NULL;
unsigned int i, len;
DNS_STATUS status = ERROR_INVALID_NAME;
len = strlen( name );
if (len >= NCBNAMSZ) return DNS_ERROR_RCODE_NAME_ERROR;
DNS_RRSET_INIT( rrset );
memset( &ncb, 0, sizeof(ncb) );
ncb.ncb_command = NCBFINDNAME;
memset( ncb.ncb_callname, ' ', sizeof(ncb.ncb_callname) );
memcpy( ncb.ncb_callname, name, len );
ncb.ncb_callname[NCBNAMSZ - 1] = '\0';
ret = Netbios( &ncb );
if (ret != NRC_GOODRET) return ERROR_INVALID_NAME;
header = (FIND_NAME_HEADER *)ncb.ncb_buffer;
buffer = (FIND_NAME_BUFFER *)((char *)header + sizeof(FIND_NAME_HEADER));
for (i = 0; i < header->node_count; i++)
{
record = heap_alloc_zero( sizeof(DNS_RECORDA) );
if (!record)
{
status = ERROR_NOT_ENOUGH_MEMORY;
goto exit;
}
else
{
record->pName = strdup_u( name );
if (!record->pName)
{
status = ERROR_NOT_ENOUGH_MEMORY;
goto exit;
}
record->wType = DNS_TYPE_A;
record->Flags.S.Section = DnsSectionAnswer;
record->Flags.S.CharSet = DnsCharSetUtf8;
record->dwTtl = DEFAULT_TTL;
/* FIXME: network byte order? */
record->Data.A.IpAddress = *(DWORD *)((char *)buffer[i].destination_addr + 2);
DNS_RRSET_ADD( rrset, (DNS_RECORD *)record );
}
}
status = ERROR_SUCCESS;
exit:
DNS_RRSET_TERMINATE( rrset );
if (status != ERROR_SUCCESS)
DnsRecordListFree( rrset.pFirstRR, DnsFreeRecordList );
else
*recp = (DNS_RECORDA *)rrset.pFirstRR;
return status;
}
static const char *debugstr_query_request(const DNS_QUERY_REQUEST *req)
{
if (!req)
return "(null)";
return wine_dbg_sprintf("{%d %s %s %x%08x %p %d %p %p}", req->Version,
debugstr_w(req->QueryName), type_to_str(req->QueryType),
(UINT32)(req->QueryOptions>>32u), (UINT32)req->QueryOptions, req->pDnsServerList,
req->InterfaceIndex, req->pQueryCompletionCallback, req->pQueryContext);
}
/******************************************************************************
* DnsQueryEx [DNSAPI.@]
*
*/
DNS_STATUS WINAPI DnsQueryEx(DNS_QUERY_REQUEST *request, DNS_QUERY_RESULT *result, DNS_QUERY_CANCEL *cancel)
{
FIXME("(%s %p %p)\n", debugstr_query_request(request), result, cancel);
return DNS_ERROR_RCODE_NOT_IMPLEMENTED;
}
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/******************************************************************************
* DnsQuery_A [DNSAPI.@]
*
*/
DNS_STATUS WINAPI DnsQuery_A( PCSTR name, WORD type, DWORD options, PVOID servers,
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PDNS_RECORDA *result, PVOID *reserved )
{
WCHAR *nameW;
DNS_RECORDW *resultW;
DNS_STATUS status;
TRACE( "(%s,%s,0x%08x,%p,%p,%p)\n", debugstr_a(name), type_to_str( type ),
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options, servers, result, reserved );
if (!name || !result)
return ERROR_INVALID_PARAMETER;
nameW = strdup_aw( name );
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if (!nameW) return ERROR_NOT_ENOUGH_MEMORY;
status = DnsQuery_W( nameW, type, options, servers, &resultW, reserved );
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if (status == ERROR_SUCCESS)
{
*result = (DNS_RECORDA *)DnsRecordSetCopyEx(
(DNS_RECORD *)resultW, DnsCharSetUnicode, DnsCharSetAnsi );
if (!*result) status = ERROR_NOT_ENOUGH_MEMORY;
DnsRecordListFree( (DNS_RECORD *)resultW, DnsFreeRecordList );
}
heap_free( nameW );
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return status;
}
/******************************************************************************
* DnsQuery_UTF8 [DNSAPI.@]
*
*/
DNS_STATUS WINAPI DnsQuery_UTF8( PCSTR name, WORD type, DWORD options, PVOID servers,
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PDNS_RECORDA *result, PVOID *reserved )
{
DNS_STATUS ret = DNS_ERROR_RCODE_NOT_IMPLEMENTED;
TRACE( "(%s,%s,0x%08x,%p,%p,%p)\n", debugstr_a(name), type_to_str( type ),
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options, servers, result, reserved );
if (!name || !result)
return ERROR_INVALID_PARAMETER;
if ((ret = resolv_funcs->set_serverlist( servers ))) return ret;
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ret = resolv_funcs->query( name, type, options, result );
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if (ret == DNS_ERROR_RCODE_NAME_ERROR && type == DNS_TYPE_A &&
!(options & DNS_QUERY_NO_NETBT))
{
TRACE( "dns lookup failed, trying netbios query\n" );
ret = do_query_netbios( name, result );
}
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return ret;
}
/******************************************************************************
* DnsQuery_W [DNSAPI.@]
*
*/
DNS_STATUS WINAPI DnsQuery_W( PCWSTR name, WORD type, DWORD options, PVOID servers,
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PDNS_RECORDW *result, PVOID *reserved )
{
char *nameU;
DNS_RECORDA *resultA;
DNS_STATUS status;
TRACE( "(%s,%s,0x%08x,%p,%p,%p)\n", debugstr_w(name), type_to_str( type ),
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options, servers, result, reserved );
if (!name || !result)
return ERROR_INVALID_PARAMETER;
nameU = strdup_wu( name );
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if (!nameU) return ERROR_NOT_ENOUGH_MEMORY;
status = DnsQuery_UTF8( nameU, type, options, servers, &resultA, reserved );
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if (status == ERROR_SUCCESS)
{
*result = (DNS_RECORDW *)DnsRecordSetCopyEx(
(DNS_RECORD *)resultA, DnsCharSetUtf8, DnsCharSetUnicode );
if (!*result) status = ERROR_NOT_ENOUGH_MEMORY;
DnsRecordListFree( (DNS_RECORD *)resultA, DnsFreeRecordList );
}
heap_free( nameU );
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return status;
}
static DNS_STATUS get_hostname_a( COMPUTER_NAME_FORMAT format, PSTR buffer, PDWORD len )
{
char name[256];
DWORD size = ARRAY_SIZE(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 get_hostname_w( COMPUTER_NAME_FORMAT format, PWSTR buffer, PDWORD len )
{
WCHAR name[256];
DWORD size = ARRAY_SIZE(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;
}
static DNS_STATUS get_dns_server_list( IP4_ARRAY *out, DWORD *len )
{
char buf[FIELD_OFFSET(DNS_ADDR_ARRAY, AddrArray[3])];
DNS_ADDR_ARRAY *servers = (DNS_ADDR_ARRAY *)buf;
DWORD ret, needed, i, num, array_len = sizeof(buf);
for (;;)
{
ret = resolv_funcs->get_serverlist( AF_INET, servers, &array_len );
if (ret != ERROR_SUCCESS && ret != ERROR_MORE_DATA) goto err;
num = (array_len - FIELD_OFFSET(DNS_ADDR_ARRAY, AddrArray[0])) / sizeof(DNS_ADDR);
needed = FIELD_OFFSET(IP4_ARRAY, AddrArray[num]);
if (!out || *len < needed)
{
*len = needed;
ret = !out ? ERROR_SUCCESS : ERROR_MORE_DATA;
goto err;
}
if (!ret) break;
if ((char *)servers != buf) heap_free( servers );
servers = heap_alloc( array_len );
if (!servers)
{
ret = ERROR_NOT_ENOUGH_MEMORY;
goto err;
}
}
out->AddrCount = num;
for (i = 0; i < num; i++)
out->AddrArray[i] = ((SOCKADDR_IN *)servers->AddrArray[i].MaxSa)->sin_addr.s_addr;
*len = needed;
ret = ERROR_SUCCESS;
err:
if ((char *)servers != buf) heap_free( servers );
return ret;
}
/******************************************************************************
* DnsQueryConfig [DNSAPI.@]
*
*/
DNS_STATUS WINAPI DnsQueryConfig( DNS_CONFIG_TYPE config, DWORD flag, PCWSTR adapter,
PVOID reserved, PVOID buffer, PDWORD len )
{
DNS_STATUS ret = ERROR_INVALID_PARAMETER;
TRACE( "(%d,0x%08x,%s,%p,%p,%p)\n", config, flag, debugstr_w(adapter),
reserved, buffer, len );
if (!len) return ERROR_INVALID_PARAMETER;
switch (config)
{
case DnsConfigDnsServerList:
return get_dns_server_list( buffer, len );
case DnsConfigHostName_A:
case DnsConfigHostName_UTF8:
return get_hostname_a( ComputerNameDnsHostname, buffer, len );
case DnsConfigFullHostName_A:
case DnsConfigFullHostName_UTF8:
return get_hostname_a( ComputerNameDnsFullyQualified, buffer, len );
case DnsConfigPrimaryDomainName_A:
case DnsConfigPrimaryDomainName_UTF8:
return get_hostname_a( ComputerNameDnsDomain, buffer, len );
case DnsConfigHostName_W:
return get_hostname_w( ComputerNameDnsHostname, buffer, len );
case DnsConfigFullHostName_W:
return get_hostname_w( ComputerNameDnsFullyQualified, buffer, len );
case DnsConfigPrimaryDomainName_W:
return get_hostname_w( ComputerNameDnsDomain, buffer, len );
case DnsConfigAdapterDomainName_A:
case DnsConfigAdapterDomainName_W:
case DnsConfigAdapterDomainName_UTF8:
case DnsConfigAdapterInfo:
case DnsConfigPrimaryHostNameRegistrationEnabled:
case DnsConfigAdapterHostNameRegistrationEnabled:
case DnsConfigAddressRegistrationMaxCount:
FIXME( "unimplemented config type %d\n", config );
break;
case DnsConfigDnsServersUnspec:
return resolv_funcs->get_serverlist( AF_UNSPEC, buffer, len );
case DnsConfigDnsServersIpv4:
return resolv_funcs->get_serverlist( AF_INET, buffer, len );
case DnsConfigDnsServersIpv6:
return resolv_funcs->get_serverlist( AF_INET6, buffer, len );
case DnsConfigSearchList:
return resolv_funcs->get_searchlist( buffer, len );
default:
WARN( "unknown config type: %d\n", config );
break;
}
return ret;
}