编程禁止Windows文件保护[c版本]
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在看雪看到 StarsunYzL写的编程禁止Windows文件保护,那个是汇编版本的,试着改为c版本的,却发现了不少问题:unicode,未公开api定义,调用
用到一个未公开的API——SfcFileException,其声明如下:
DWORD WINAPI SfcFileException(DWORD dwUnknown0, PWCHAR pwszFile, DWORD dwUnknown1);
从参数可以看出SfcFileException只能对单个文件禁止Windows文件保护,注意pwszFile参数是UNICODE字符。函数成功返回0,失败返回1(一般是文件不受Windows文件保护保护)。下面看c代码:
#include <windows.h>
#pragma comment(lib,"user32")
#pragma comment(lib,"advapi32")
typedef DWORD WINAPI SfcFileException(DWORD dwUnknown0, PWCHAR pwszFile, DWORD dwUnknown1);
int WINAPI WinMain(HINSTANCE hInstance, HINSTANCE hPrevInstance, LPSTR pszCmdLine, int cmdShow)
...{
DWORD result = 0;
WCHAR szW[100] = L"C:/Windows/Explorer.exe";
HMODULE hLib = LoadLibrary("SFC_OS.DLL");
SfcFileException *se = GetProcAddress(hLib,5);
result = se(0,szW,-1);
if (result)
MessageBox(NULL,"err","err",MB_OK);
else MessageBox(NULL,"success","success",MB_OK);
FreeLibrary(hLib);
return 1;
}
#pragma comment(lib,"user32")
#pragma comment(lib,"advapi32")
typedef DWORD WINAPI SfcFileException(DWORD dwUnknown0, PWCHAR pwszFile, DWORD dwUnknown1);
int WINAPI WinMain(HINSTANCE hInstance, HINSTANCE hPrevInstance, LPSTR pszCmdLine, int cmdShow)
...{
DWORD result = 0;
WCHAR szW[100] = L"C:/Windows/Explorer.exe";
HMODULE hLib = LoadLibrary("SFC_OS.DLL");
SfcFileException *se = GetProcAddress(hLib,5);
result = se(0,szW,-1);
if (result)
MessageBox(NULL,"err","err",MB_OK);
else MessageBox(NULL,"success","success",MB_OK);
FreeLibrary(hLib);
return 1;
}
也可以这样写:
#include <windows.h>
#pragma comment(lib,"user32")
#pragma comment(lib,"advapi32")
typedef DWORD (WINAPI *SfcFileException)(DWORD dwUnknown0, PWCHAR pwszFile, DWORD dwUnknown1);
int WINAPI WinMain(HINSTANCE hInstance, HINSTANCE hPrevInstance, LPSTR pszCmdLine, int cmdShow)
...{
DWORD result = 0;
WCHAR szW[100] = L"C:/Windows/Explorer.exe";
HMODULE hLib = LoadLibrary("SFC_OS.DLL");
SfcFileException se = GetProcAddress(hLib,5);
result = se(0,szW,-1);
if (result)
MessageBox(NULL,"err","err",MB_OK);
else MessageBox(NULL,"success","success",MB_OK);
FreeLibrary(hLib);
return 1;
}
#pragma comment(lib,"user32")
#pragma comment(lib,"advapi32")
typedef DWORD (WINAPI *SfcFileException)(DWORD dwUnknown0, PWCHAR pwszFile, DWORD dwUnknown1);
int WINAPI WinMain(HINSTANCE hInstance, HINSTANCE hPrevInstance, LPSTR pszCmdLine, int cmdShow)
...{
DWORD result = 0;
WCHAR szW[100] = L"C:/Windows/Explorer.exe";
HMODULE hLib = LoadLibrary("SFC_OS.DLL");
SfcFileException se = GetProcAddress(hLib,5);
result = se(0,szW,-1);
if (result)
MessageBox(NULL,"err","err",MB_OK);
else MessageBox(NULL,"success","success",MB_OK);
FreeLibrary(hLib);
return 1;
}
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