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96 lines
2.1 KiB
96 lines
2.1 KiB
//========= Copyright Valve Corporation, All rights reserved. ============// |
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// |
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// Purpose: |
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// |
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//============================================================================= |
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#include <windows.h> |
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#include "shader_dll_verify.h" |
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static unsigned char *g_pLastInputData = 0; |
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static HANDLE g_hDLLInst = 0; |
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extern "C" |
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{ |
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void __declspec( dllexport ) _ftol3( char *pData ); |
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BOOL WINAPI DllMain (HANDLE hInst, ULONG ulInit, LPVOID lpReserved); |
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}; |
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BOOL WINAPI DllMain (HANDLE hInst, ULONG ulInit, LPVOID lpReserved) |
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{ |
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lpReserved = lpReserved; |
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ulInit = ulInit; |
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g_hDLLInst = hInst; |
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return true; |
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} |
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class CShaderDLLVerification : public IShaderDLLVerification |
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{ |
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public: |
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virtual CRC32_t Function1( unsigned char *pData ); |
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virtual void Function2( int a, int b, int c ); |
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virtual void Function3( int a, int b, int c ); |
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virtual void Function4( int a, int b, int c ); |
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virtual CRC32_t Function5(); |
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}; |
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static CShaderDLLVerification g_Blah; |
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// The main exported function.. return a pointer to g_Blah. |
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void __declspec( dllexport ) _ftol3( char *pData ) |
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{ |
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pData += SHADER_DLL_VERIFY_DATA_PTR_OFFSET; |
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char *pToFillIn = (char*)&g_Blah; |
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memcpy( pData, &pToFillIn, 4 ); |
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} |
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CRC32_t CShaderDLLVerification::Function1( unsigned char *pData ) |
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{ |
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pData += SHADER_DLL_VERIFY_DATA_PTR_OFFSET; |
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g_pLastInputData = (unsigned char*)pData; |
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void *pVerifyPtr1 = &g_Blah; |
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CRC32_t testCRC; |
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CRC32_Init( &testCRC ); |
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CRC32_ProcessBuffer( &testCRC, pData, SHADER_DLL_VERIFY_DATA_LEN1 ); |
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CRC32_ProcessBuffer( &testCRC, &g_hDLLInst, 4 ); |
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CRC32_ProcessBuffer( &testCRC, &pVerifyPtr1, 4 ); |
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CRC32_Final( &testCRC ); |
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return testCRC; |
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} |
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void CShaderDLLVerification::Function2( int a, int b, int c ) |
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{ |
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a=b=c; |
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MD5Context_t md5Context; |
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MD5Init( &md5Context ); |
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MD5Update( &md5Context, g_pLastInputData + SHADER_DLL_VERIFY_DATA_PTR_OFFSET, SHADER_DLL_VERIFY_DATA_LEN1 - SHADER_DLL_VERIFY_DATA_PTR_OFFSET ); |
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MD5Final( g_pLastInputData, &md5Context ); |
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} |
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void CShaderDLLVerification::Function3( int a, int b, int c ) |
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{ |
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a=b=c; |
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} |
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void CShaderDLLVerification::Function4( int a, int b, int c ) |
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{ |
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a=b=c; |
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} |
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CRC32_t CShaderDLLVerification::Function5() |
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{ |
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return 32423; |
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}
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