Initialer Commit

CPP/Windows/MemoryLock.cpp

@@ -0,0 +1,72 @@
+// Windows/MemoryLock.cpp
+
+#include "StdAfx.h"
+
+#include "MemoryLock.h"
+
+namespace NWindows {
+namespace NSecurity {
+
+#ifndef UNDER_CE
+
+#ifdef _UNICODE
+#define MY_FUNC_SELECT(f) :: f
+#else
+#define MY_FUNC_SELECT(f) my_ ## f
+extern "C" {
+typedef BOOL (WINAPI * Func_OpenProcessToken)(HANDLE ProcessHandle, DWORD DesiredAccess, PHANDLE TokenHandle);
+typedef BOOL (WINAPI * Func_LookupPrivilegeValue)(LPCTSTR lpSystemName, LPCTSTR lpName, PLUID lpLuid);
+typedef BOOL (WINAPI * Func_AdjustTokenPrivileges)(HANDLE TokenHandle, BOOL DisableAllPrivileges,
+    PTOKEN_PRIVILEGES NewState, DWORD BufferLength, PTOKEN_PRIVILEGES PreviousState, PDWORD ReturnLength);
+}
+#define GET_PROC_ADDR(fff, name) Func_ ## fff  my_ ## fff  = (Func_ ## fff)GetProcAddress(hModule, name)
+#endif
+
+bool EnablePrivilege(LPCTSTR privilegeName, bool enable)
+{
+  bool res = false;
+
+  #ifndef _UNICODE
+
+  HMODULE hModule = ::LoadLibrary(TEXT("Advapi32.dll"));
+  if (hModule == NULL)
+    return false;
+  
+  GET_PROC_ADDR(OpenProcessToken, "OpenProcessToken");
+  GET_PROC_ADDR(LookupPrivilegeValue, "LookupPrivilegeValueA");
+  GET_PROC_ADDR(AdjustTokenPrivileges, "AdjustTokenPrivileges");
+  
+  if (my_OpenProcessToken &&
+      my_AdjustTokenPrivileges &&
+      my_LookupPrivilegeValue)
+  
+  #endif
+
+  {
+    HANDLE token;
+    if (MY_FUNC_SELECT(OpenProcessToken)(::GetCurrentProcess(), TOKEN_ADJUST_PRIVILEGES, &token))
+    {
+      TOKEN_PRIVILEGES tp;
+      if (MY_FUNC_SELECT(LookupPrivilegeValue)(NULL, privilegeName, &(tp.Privileges[0].Luid)))
+      {
+        tp.PrivilegeCount = 1;
+        tp.Privileges[0].Attributes = (enable ? SE_PRIVILEGE_ENABLED : 0);
+        if (MY_FUNC_SELECT(AdjustTokenPrivileges)(token, FALSE, &tp, 0, NULL, NULL))
+          res = (GetLastError() == ERROR_SUCCESS);
+      }
+      ::CloseHandle(token);
+    }
+  }
+    
+  #ifndef _UNICODE
+
+  ::FreeLibrary(hModule);
+  
+  #endif
+
+  return res;
+}
+
+#endif
+
+}}