171 lines
3.5 KiB
C++
171 lines
3.5 KiB
C++
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/*++
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Copyright (c) 1996 Microsoft Corporation
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Module Name :
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inetapi.cpp
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Abstract:
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wininet.dll wrapper class implementation.
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Author:
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Michael Cheuk (mcheuk)
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Project:
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Link Checker
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Revision History:
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--*/
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#include "stdafx.h"
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#include "inetapi.h"
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// Diable the warning C4706: assignment within conditional expression
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// for LOAD_ENTRY macro
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#pragma warning( disable : 4706)
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#ifdef _DEBUG
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#define new DEBUG_NEW
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#undef THIS_FILE
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static char THIS_FILE[] = __FILE__;
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#endif
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// Initialize the static members
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HMODULE CWininet::sm_hWininet = NULL;
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int CWininet::sm_iInstanceCount = 0;
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pfnInternetOpenA CWininet::InternetOpenA = NULL;
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pfnInternetSetStatusCallback CWininet::InternetSetStatusCallback = NULL;
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pfnInternetConnectA CWininet::InternetConnectA = NULL;
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pfnHttpOpenRequestA CWininet::HttpOpenRequestA = NULL;
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pfnHttpAddRequestHeadersA CWininet::HttpAddRequestHeadersA = NULL;
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pfnHttpSendRequestA CWininet::HttpSendRequestA = NULL;
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pfnHttpQueryInfoA CWininet::HttpQueryInfoA = NULL;
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pfnInternetCloseHandle CWininet::InternetCloseHandle = NULL;
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pfnInternetReadFile CWininet::InternetReadFile = NULL;
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pfnInternetCrackUrlA CWininet::InternetCrackUrlA = NULL;
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pfnInternetCombineUrlA CWininet::InternetCombineUrlA = NULL;
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pfnInternetOpenUrlA CWininet::InternetOpenUrlA = NULL;
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CWininet::CWininet(
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)
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/*++
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Routine Description:
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Constructor. It increases the static instance count.
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Arguments:
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N/A
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Return Value:
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N/A
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--*/
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{
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// Increment the instance count
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++sm_iInstanceCount;
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} // CWininet::CWininet
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CWininet::~CWininet(
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)
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/*++
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Routine Description:
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Destructor. It decrease the static instance count and/or
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free wininet.dll from memory.
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Arguments:
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N/A
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Return Value:
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N/A
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--*/
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{
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// If the instance count is zero, free wininet.dll
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// from memory
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if(--sm_iInstanceCount == 0 && sm_hWininet)
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{
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VERIFY(FreeLibrary(sm_hWininet));
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sm_hWininet = NULL;
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InternetOpenA = NULL;
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InternetSetStatusCallback = NULL;
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InternetConnectA = NULL;
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HttpOpenRequestA = NULL;
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HttpAddRequestHeadersA = NULL;
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HttpSendRequestA = NULL;
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HttpQueryInfoA = NULL;
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InternetCloseHandle = NULL;
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InternetReadFile = NULL;
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InternetCrackUrlA = NULL;
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InternetCombineUrlA = NULL;
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InternetOpenUrlA = NULL;
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}
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} // CWininet::~CWininet
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BOOL
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CWininet::Load(
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)
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/*++
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Routine Description:
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Load the wininet.dll onto memory Or increase the wininet.dll
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system reference count by one.
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Arguments:
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N/A
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Return Value:
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BOOL - TRUE if wininet.dll loaded. FALSE otherwise.
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--*/
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{
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if ( !(sm_hWininet = LoadLibrary( _T("wininet.dll") )) )
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{
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TRACE(_T("CWininet::Load() - Failed to load wininet.dll\n"));
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return FALSE;
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}
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if ( !LOAD_ENTRY( sm_hWininet, InternetOpenA ) ||
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!LOAD_ENTRY( sm_hWininet, InternetSetStatusCallback ) ||
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!LOAD_ENTRY( sm_hWininet, InternetConnectA ) ||
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!LOAD_ENTRY( sm_hWininet, HttpOpenRequestA ) ||
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!LOAD_ENTRY( sm_hWininet, HttpAddRequestHeadersA ) ||
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!LOAD_ENTRY( sm_hWininet, HttpSendRequestA ) ||
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!LOAD_ENTRY( sm_hWininet, HttpQueryInfoA ) ||
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!LOAD_ENTRY( sm_hWininet, InternetCloseHandle ) ||
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!LOAD_ENTRY( sm_hWininet, InternetReadFile ) ||
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!LOAD_ENTRY( sm_hWininet, InternetCrackUrlA) ||
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!LOAD_ENTRY( sm_hWininet, InternetCombineUrlA) ||
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!LOAD_ENTRY( sm_hWininet, InternetOpenUrlA) )
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{
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return FALSE;
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}
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return TRUE;
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} // CWininet::Load
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