windows-nt/Source/XPSP1/NT/net/homenet/beacon/server/util.cpp
2020-09-26 16:20:57 +08:00

149 lines
2.9 KiB
C++

#pragma once
#include "pch.h"
#pragma hdrstop
#include "winsock2.h"
#include "util.h"
HRESULT SetUPnPError(LPOLESTR pszError)
{
HRESULT hr = S_OK;
ICreateErrorInfo* pCreateErrorInfo;
hr = CreateErrorInfo(&pCreateErrorInfo);
if(SUCCEEDED(hr))
{
hr = pCreateErrorInfo->SetSource(pszError);
if(SUCCEEDED(hr))
{
IErrorInfo* pErrorInfo;
hr = pCreateErrorInfo->QueryInterface(IID_IErrorInfo, reinterpret_cast<void**>(&pErrorInfo));
if(SUCCEEDED(hr))
{
hr = SetErrorInfo(0, pErrorInfo);
pErrorInfo->Release();
}
}
pCreateErrorInfo->Release();
}
return hr;
}
DWORD WINAPI
INET_ADDR(LPCWSTR szAddressW)
//
// The 3 "." testing is for the sole purpose of preventing computer
// names with digits to be catched appropriately.
// so we strictly assume a valid IP is number.number.number.number
//
{
CHAR szAddressA[16];
int iCount = 0;
LPCWSTR tmp = szAddressW;
// Check wether it is a non-shortcut IPs.
while(tmp = wcschr(tmp, L'.'))
{ tmp++; iCount++; }
if ( iCount < 3)
{ return INADDR_NONE; }
wcstombs(szAddressA, szAddressW, 16);
return inet_addr(szAddressA);
}
WCHAR * WINAPI
INET_NTOW( ULONG addr )
{
struct in_addr dwAddress;
static WCHAR szAddress[16];
dwAddress.S_un.S_addr = addr;
char* pAddr = inet_ntoa(*(struct in_addr *) &dwAddress);
if (pAddr)
{
// mbstowcs(szAddress, inet_ntoa(*(struct in_addr *)&dwAddress), 16);
MultiByteToWideChar(CP_ACP, 0, pAddr, -1, szAddress, 16);
return szAddress;
}
else
return NULL;
}
WCHAR * WINAPI
INET_NTOW_TS( ULONG addr )
{
WCHAR* retString = NULL;
CHAR* asciiString = NULL;
struct in_addr dwAddress;
dwAddress.S_un.S_addr = addr;
retString = (WCHAR*)CoTaskMemAlloc( 16 * sizeof(WCHAR) );
if ( NULL == retString )
{
return NULL;
}
//
// note that inet_nota is thread safe
// altough it uses static buffer
//
asciiString = inet_ntoa( dwAddress);
if (asciiString != NULL)
{
MultiByteToWideChar(CP_ACP, 0, asciiString, -1, retString, 16);
return retString;
}
return NULL;
}
CSwitchSecurityContext::CSwitchSecurityContext( )
:m_pOldCtx( NULL )
{
HRESULT hr;
hr = CoSwitchCallContext( NULL, &m_pOldCtx );
_ASSERT( SUCCEEDED(hr) );
_ASSERT( NULL != m_pOldCtx );
}
CSwitchSecurityContext::~CSwitchSecurityContext( )
{
HRESULT hr;
IUnknown * pGarb;
_ASSERT( NULL != m_pOldCtx );
hr = CoSwitchCallContext( m_pOldCtx, &pGarb );
_ASSERT( SUCCEEDED(hr) );
//
// m_pOldCtx->Release();
// and pGarb->Release();
// Should not be released
// Documentation is flawed; the interface is not
// a COM interface actually
//
};