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/*
CVSNT Generic API
Copyright (C) 2004 Tony Hoyle and March-Hare Software Ltd
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., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
*/
/* Win32 specific */
#define WIN32_LEAN_AND_MEAN
#include <windows.h>
#include <tchar.h>
#include <winsock2.h>
#include <ws2tcpip.h>
#include <delayimp.h>
#include <config.h>
#include "../lib/api_system.h"
#include "../ServerIo.h"
#include "../cvs_string.h"
#include "../DnsApi.h"
CDnsApi::CDnsApi()
{
m_pdnsBase=m_pdnsCurrent=NULL;
}
CDnsApi::~CDnsApi()
{
Close();
}
bool CDnsApi::Lookup(const char *name, int rrType)
{
__try
{
if (FAILED(__HrLoadAllImportsForDll("DNSAPI.dll")))
{
CServerIo::trace(3,"Couldn't find dnsapi.dll - failing dns api");
return false;
}
}
__except(EXCEPTION_EXECUTE_HANDLER)
{
CServerIo::trace(3,"Couldn't find dnsapi.dll - failing dns api");
return false;
}
Close();
DNS_STATUS ret = DnsQuery_UTF8(name, rrType, DNS_QUERY_TREAT_AS_FQDN, NULL, (PDNS_RECORD*)&m_pdnsBase, NULL);
if(!ret)
m_pdnsCurrent = m_pdnsBase;
return ret?false:true;
}
bool CDnsApi::Next()
{
if(!m_pdnsCurrent)
return false;
m_pdnsCurrent = m_pdnsCurrent->pNext;
if(!m_pdnsCurrent)
return false;
return true;
}
bool CDnsApi::Close()
{
if(m_pdnsBase)
DnsRecordListFree((PDNS_RECORD)m_pdnsBase,DnsFreeRecordList);
m_pdnsBase=m_pdnsCurrent=NULL;
return true;
}
const char *CDnsApi::GetRRName()
{
if(m_pdnsBase)
return m_pdnsBase->pName;
return NULL;
}
const char *CDnsApi::GetRRPtr()
{
if(!m_pdnsCurrent)
return NULL;
if(m_pdnsCurrent->wType!=DNS_TYPE_PTR)
return NULL;
return m_pdnsCurrent->Data.Ptr.pNameHost;
}
const char *CDnsApi::GetRRTxt()
{
if(!m_pdnsCurrent)
return NULL;
if(m_pdnsCurrent->wType!=DNS_TYPE_TEXT)
return NULL;
return m_pdnsCurrent->Data.Txt.pStringArray[0];
}
CDnsApi::SrvRR *CDnsApi::GetRRSrv()
{
if(!m_pdnsCurrent)
return NULL;
if(m_pdnsCurrent->wType!=DNS_TYPE_SRV)
return NULL;
tmpSrv.server = m_pdnsCurrent->Data.Srv.pNameTarget;
tmpSrv.port = m_pdnsCurrent->Data.Srv.wPort;
tmpSrv.priority = m_pdnsCurrent->Data.Srv.wPriority;
tmpSrv.weight = m_pdnsCurrent->Data.Srv.wWeight;
return &tmpSrv;
}
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