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182 lines
4.4 KiB
182 lines
4.4 KiB
/*++
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Copyright (c) 2000 Microsoft Corporation
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Module Name:
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NetObjectsFusion5.cpp
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Abstract:
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This shim hooks the CreateFile/WriteFile if the file is corpwiz_loader.html
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to write in the required javascript so as to make the appwork if the IE browser
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version is > 5.
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Notes:
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This is an app specific shim.
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History:
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01/24/2001 a-leelat Created
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03/13/2001 robkenny Converted to CString
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--*/
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#include "precomp.h"
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IMPLEMENT_SHIM_BEGIN(NetObjectsFusion5)
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#include "ShimHookMacro.h"
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APIHOOK_ENUM_BEGIN
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APIHOOK_ENUM_ENTRY(CloseHandle)
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APIHOOK_ENUM_ENTRY(WriteFile)
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APIHOOK_ENUM_ENTRY(CreateFileA)
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APIHOOK_ENUM_END
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volatile HANDLE g_Handle = NULL;
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HANDLE
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APIHOOK(CreateFileA)(
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LPSTR lpFileName,
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DWORD dwDesiredAccess,
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DWORD dwShareMode,
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LPSECURITY_ATTRIBUTES lpSecurityAttributes,
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DWORD dwCreationDisposition,
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DWORD dwFlagsAndAttributes,
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HANDLE hTemplateFile
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)
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{
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CHAR szNameToCheck[] = "corpwiz_loader.html";
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HANDLE l_Handle = (HANDLE)ORIGINAL_API(CreateFileA)(
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lpFileName,
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dwDesiredAccess,
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dwShareMode,
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lpSecurityAttributes,
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dwCreationDisposition,
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dwFlagsAndAttributes,
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hTemplateFile);
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if ( strstr(lpFileName,szNameToCheck) )
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{
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if (l_Handle != INVALID_HANDLE_VALUE )
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g_Handle = l_Handle;
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}
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else
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g_Handle = NULL;
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return l_Handle;
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}
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BOOL
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APIHOOK(WriteFile)(
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HANDLE hFile,
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LPCVOID lpBuffer,
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DWORD nNumberOfBytesToWrite,
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LPDWORD lpNumberOfBytesWritten,
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LPOVERLAPPED lpOverlapped
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)
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{
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BOOL bRet = FALSE;
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if ( g_Handle && (hFile == g_Handle) && lpBuffer)
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{
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CHAR szStringToWrite[] = "\r\n var IsIE6 = navigator.userAgent.indexOf(\"IE 6\") > -1;\r\n\r\n if ( IsIE6 == true ) { IsIE5 = true; }\r\n";
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CHAR szStringToCheck[] = "var IsIE5 = navigator.userAgent.indexOf(\"IE 5\") > -1;";
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CHAR *szPtr = NULL;
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if ((szPtr = strstr((LPCSTR)lpBuffer,szStringToCheck)))
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{
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int iSize = sizeof(CHAR) * (szPtr - (LPSTR)lpBuffer + strlen(szStringToCheck));
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DWORD dwTotalBytesWritten;
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bRet = ORIGINAL_API(WriteFile)(
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hFile,
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lpBuffer,
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(DWORD)iSize,
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lpNumberOfBytesWritten,
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lpOverlapped);
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dwTotalBytesWritten = *lpNumberOfBytesWritten;
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bRet = ORIGINAL_API(WriteFile)(
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hFile,
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(LPVOID)szStringToWrite,
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(DWORD)strlen(szStringToWrite),
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lpNumberOfBytesWritten,
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lpOverlapped);
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CHAR* szrBuf = (LPSTR)lpBuffer + iSize;
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bRet = ORIGINAL_API(WriteFile)(
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hFile,
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(LPVOID)szrBuf,
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(nNumberOfBytesToWrite - (DWORD)iSize),
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lpNumberOfBytesWritten,
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lpOverlapped);
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*lpNumberOfBytesWritten += dwTotalBytesWritten;
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return bRet;
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}//end of if
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}
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return ORIGINAL_API(WriteFile)(
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hFile,
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lpBuffer,
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nNumberOfBytesToWrite,
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lpNumberOfBytesWritten,
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lpOverlapped);
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}
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BOOL
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APIHOOK(CloseHandle)(
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HANDLE hObject
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)
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{
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if ( g_Handle && (hObject == g_Handle) )
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{
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g_Handle = NULL;
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}
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return ORIGINAL_API(CloseHandle)(hObject);
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}
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/*++
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Register hooked functions
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--*/
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HOOK_BEGIN
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APIHOOK_ENTRY(KERNEL32.DLL, CreateFileA)
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APIHOOK_ENTRY(KERNEL32.DLL, WriteFile)
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APIHOOK_ENTRY(KERNEL32.DLL, CloseHandle)
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HOOK_END
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IMPLEMENT_SHIM_END
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