Win7开发系列： Win7 UAC帮助类
我有一个应用程序需要检测是否正在升高的特权。我现在代码建立这样的:
函数功能 ： 是否是管理员
private static bool _isAdministrator()
{
WindowsIdentity identity = WindowsIdentity.GetCurrent();
WindowsPrincipal principal = new WindowsPrincipal(identity);
return principal.IsInRole (WindowsBuiltInRole.Administrator);
}
类主要功能：
1：UAC状态查询
2：用户状态查询
public static class UacHelper
{
private const string uacRegistryKey = "Software\\Microsoft\\Windows\\CurrentVersion\\Policies\\System";
private const string uacRegistryValue = "EnableLUA";
private static uint STANDARD_RIGHTS_READ = 0x00020000;
private static uint TOKEN_QUERY = 0x0008;
private static uint TOKEN_READ = (STANDARD_RIGHTS_READ | TOKEN_QUERY);
static extern bool OpenProcessToken(IntPtr ProcessHandle, UInt32 DesiredAccess, out IntPtr TokenHandle);
public static extern bool GetTokenInformation(IntPtr TokenHandle, TOKEN_INFORMATION_CLASS TokenInformationClass, IntPtr TokenInformation, uint TokenInformationLength, out uint ReturnLength);
public enum TOKEN_INFORMATION_CLASS
{
TokenUser = 1,
TokenGroups,
TokenPrivileges,
TokenOwner,
TokenPrimaryGroup,
TokenDefaultDacl,
TokenSource,
TokenType,
TokenImpersonationLevel,
TokenStatistics,
TokenRestrictedSids,
TokenSessionId,
TokenGroupsAndPrivileges,
TokenSessionReference,
TokenSandBoxInert,
TokenAuditPolicy,
TokenOrigin,
TokenElevationType,
TokenLinkedToken,
TokenElevation,
TokenHasRestrictions,
TokenAccessInformation,
TokenVirtualizationAllowed,
TokenVirtualizationEnabled,
TokenIntegrityLevel,
TokenUIAccess,
TokenMandatoryPolicy,
TokenLogonSid,
MaxTokenInfoClass
}
public enum TOKEN_ELEVATION_TYPE
{
TokenElevationTypeDefault = 1,
TokenElevationTypeFull,
TokenElevationTypeLimited
}
public static bool IsUacEnabled
{
get
{
RegistryKey uacKey = Registry.LocalMachine.OpenSubKey(uacRegistryKey, false);
bool result = uacKey.GetValue(uacRegistryValue).Equals(1);
return result;
}
}
public static bool IsProcessElevated
{
get
{
if (IsUacEnabled)
{
IntPtr tokenHandle;
if (!OpenProcessToken(Process.GetCurrentProcess().Handle, TOKEN_READ, out tokenHandle))
{
throw new ApplicationException("Could not get process token.Win32 Error Code: " + Marshal.GetLastWin32Error());
}
TOKEN_ELEVATION_TYPE elevationResult = TOKEN_ELEVATION_TYPE.TokenElevationTypeDefault;
int elevationResultSize = Marshal.SizeOf((int)elevationResult);
uint returnedSize = 0;
IntPtr elevationTypePtr = Marshal.AllocHGlobal(elevationResultSize);
bool success = GetTokenInformation(tokenHandle, TOKEN_INFORMATION_CLASS.TokenElevationType, elevationTypePtr, (uint)elevationResultSize, out returnedSize);
if (success)
{
elevationResult = (TOKEN_ELEVATION_TYPE)Marshal.ReadInt32(elevationTypePtr);
bool isProcessAdmin = elevationResult == TOKEN_ELEVATION_TYPE.TokenElevationTypeFull;
return isProcessAdmin;
}
else
{
throw new ApplicationException("Unable to determine the current elevation.");
}
}
else
{
WindowsIdentity identity = WindowsIdentity.GetCurrent();
WindowsPrincipal principal = new WindowsPrincipal(identity);
bool result = principal.IsInRole(WindowsBuiltInRole.Administrator);
return result;
}
}
}
}
相关资料：
http://uachelpers.codeplex.com/releases/view/29976
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