forked from Hay1tsme/segatools
refactor all common parts and games
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34
common/util/get_function_ordinal.c
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34
common/util/get_function_ordinal.c
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@ -0,0 +1,34 @@
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#include "get_function_ordinal.h"
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DWORD get_function_ordinal(const char* dllName, const char* functionName) {
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HMODULE hModule = LoadLibraryA(dllName);
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if (!hModule) {
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dprintf("Failed to load DLL: %s\n", dllName);
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return 0;
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}
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ULONG size;
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PIMAGE_EXPORT_DIRECTORY exportDir = (PIMAGE_EXPORT_DIRECTORY)ImageDirectoryEntryToData(
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hModule, TRUE, IMAGE_DIRECTORY_ENTRY_EXPORT, &size);
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if (!exportDir) {
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dprintf("Failed to get export table\n");
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FreeLibrary(hModule);
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return 0;
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}
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DWORD* functionNames = (DWORD*)((BYTE*)hModule + exportDir->AddressOfNames);
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WORD* ordinals = (WORD*)((BYTE*)hModule + exportDir->AddressOfNameOrdinals);
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for (DWORD i = 0; i < exportDir->NumberOfNames; ++i) {
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char* name = (char*)((BYTE*)hModule + functionNames[i]);
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if (strcmp(name, functionName) == 0) {
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DWORD ordinal = ordinals[i] + exportDir->Base;
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FreeLibrary(hModule);
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return ordinal;
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}
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}
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dprintf("Function not found: %s\n", functionName);
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FreeLibrary(hModule);
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return 0;
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}
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