Code:
/ 4.0 / 4.0 / untmp / DEVDIV_TFS / Dev10 / Releases / RTMRel / ndp / fx / src / Wmi / managed / System / Management / Instrumentation / WMICapabilities.cs / 1305376 / WMICapabilities.cs
namespace System.Management.Instrumentation { using System; using System.IO; using System.Security.Principal; using Microsoft.Win32; using System.Diagnostics; using System.Globalization; using System.Runtime.Versioning; internal sealed class WMICapabilities { const string WMIKeyPath = @"Software\Microsoft\WBEM"; const string WMINetKeyPath = @"Software\Microsoft\WBEM\.NET"; const string WMICIMOMKeyPath = @"Software\Microsoft\WBEM\CIMOM"; const string MultiIndicateSupportedValueNameVal = "MultiIndicateSupported"; const string AutoRecoverMofsVal = "Autorecover MOFs"; const string AutoRecoverMofsTimestampVal = "Autorecover MOFs timestamp"; const string InstallationDirectoryVal = "Installation Directory"; const string FrameworkSubDirectory = "Framework"; ////// Key to WMI.NET information /// static RegistryKey wmiNetKey; static RegistryKey wmiKey; [ResourceExposure(ResourceScope.None),ResourceConsumption(ResourceScope.Machine,ResourceScope.Machine)] static WMICapabilities () { wmiNetKey = Registry.LocalMachine.OpenSubKey(WMINetKeyPath, false); wmiKey = Registry.LocalMachine.OpenSubKey(WMIKeyPath, false); } ////// Indicates if IWbemObjectSink supports calls with multiple objects. /// On some versions of WMI, IWbemObjectSink will leak memory if /// Indicate is called with lObjectCount greater than 1. /// If the registry value, /// HKLM\Software\Microsoft\WBEM\.NET\MultiIndicateSupported /// exists and is non-zero, it is assumed that we can call Indicate /// with multiple objects. /// Allowed values /// -1 - We have not determined support for multi-indicate yet /// 0 - We do not support multi-indicate /// 1 - We support multi-indicate /// static int multiIndicateSupported = -1; static public bool MultiIndicateSupported { get { if(-1 == multiIndicateSupported) { // Default multi-indicate support to what we think is // possible based on the OS. // This should be true for whistler, or Nova with FastProx.dll FilePrivatePart is >= 56. multiIndicateSupported = MultiIndicatePossible()?1:0; // See if there is a WMI.NET key if(wmiNetKey != null) { // Try to get the 'MultiIndicateSupported' value // Default to the default value in multiIndicateSupported Object result = wmiNetKey.GetValue(MultiIndicateSupportedValueNameVal, multiIndicateSupported); // The value should be a DWORD (returned as an 'int'), and is 1 if supported if(result.GetType() == typeof(int) && (int)result==1) multiIndicateSupported = 1; } } return multiIndicateSupported == 1; } } [ResourceExposure(ResourceScope.None),ResourceConsumption(ResourceScope.Machine,ResourceScope.Machine)] static public void AddAutorecoverMof(string path) { RegistryKey wmiCIMOMKey = Registry.LocalMachine.OpenSubKey(WMICIMOMKeyPath, true); if(null != wmiCIMOMKey) { object mofsTemp = wmiCIMOMKey.GetValue(AutoRecoverMofsVal); string [] mofs = mofsTemp as string[]; if(null == mofs) { if(null != mofsTemp) { // Oh No! We have a auto recover key, but it is not reg multistring // We just give up return; } mofs = new string[] {}; } // We ALWAYS update the autorecover timestamp wmiCIMOMKey.SetValue(AutoRecoverMofsTimestampVal, DateTime.Now.ToFileTime().ToString((IFormatProvider)CultureInfo.InvariantCulture.GetFormat(typeof(System.Int64)))); // Look for path in existing autorecover key foreach(string mof in mofs) { if(String.Compare(mof, path, StringComparison.OrdinalIgnoreCase) == 0) { // We already have this MOF return; } } // We have the array of strings. Now, add a new one string [] newMofs = new string[mofs.Length+1]; mofs.CopyTo(newMofs, 0); newMofs[newMofs.Length-1] = path; wmiCIMOMKey.SetValue(AutoRecoverMofsVal, newMofs); wmiCIMOMKey.SetValue(AutoRecoverMofsTimestampVal, DateTime.Now.ToFileTime().ToString((IFormatProvider)CultureInfo.InvariantCulture.GetFormat(typeof(System.Int64)))); } } static string installationDirectory = null; public static string InstallationDirectory { get { if(null == installationDirectory && null != wmiKey) installationDirectory = wmiKey.GetValue(InstallationDirectoryVal).ToString(); return installationDirectory; } } public static string FrameworkDirectory { get { return Path.Combine(InstallationDirectory, FrameworkSubDirectory); } } public static bool IsUserAdmin() { // Bug#89083 - If we are on Win9x, we are always assumed to be an admin if(Environment.OSVersion.Platform == PlatformID.Win32Windows) return true; WindowsPrincipal principal = new WindowsPrincipal(WindowsIdentity.GetCurrent()); return (principal.Identity.IsAuthenticated && principal.IsInRole(WindowsBuiltInRole.Administrator)); } static bool IsNovaFile(FileVersionInfo info) { // A file is a Nova version if Major=1, Minor=50, and Build=1085 return ( info.FileMajorPart==1 && info.FileMinorPart==50 && info.FileBuildPart==1085); } [ResourceExposure(ResourceScope.None),ResourceConsumption(ResourceScope.Machine,ResourceScope.Machine)] static bool MultiIndicatePossible() { // If we are on Whistler or above, we are OK // - Platform == Win32NT and OS version >= 5.1.0.0 // - MajorVersion > 5 or (MajorVersion == 5 && MinorVersion > 0) OperatingSystem os = Environment.OSVersion; if(os.Platform==PlatformID.Win32NT && os.Version >= new Version(5, 1)) return true; // We know that we can do multi-indicate if we are running Nova, // and the FastProx.dll FilePrivatePart is >= 56. string fastproxPath = Path.Combine(Environment.SystemDirectory, @"wbem\fastprox.dll"); FileVersionInfo info = FileVersionInfo.GetVersionInfo(fastproxPath); if(IsNovaFile(info) && info.FilePrivatePart>=56) return true; return false; } public static bool IsWindowsXPOrHigher() { // If we are on Whistler or above, we are OK // - Platform == Win32NT and OS version >= 5.1.0.0 // - MajorVersion > 5 or (MajorVersion == 5 && MinorVersion > 0) OperatingSystem os = Environment.OSVersion; if(os.Platform==PlatformID.Win32NT && os.Version >= new Version(5, 1)) return true; return false; } } } // File provided for Reference Use Only by Microsoft Corporation (c) 2007. // Copyright (c) Microsoft Corporation. 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