private static RegistryKey OpenSubKey(RegistryKey hkey, string subKeyName, RegWow64Options options)
{
//Sanity check
if (hkey == null || RegistryKeyHandle(hkey) == IntPtr.Zero)
{
return(null);
}
//Set rights
int rights = (int)RegistryRights.ReadKey;
//Call the native function
int subKeyHandle, result = RegOpenKeyEx(RegistryKeyHandle(hkey), subKeyName, 0, rights | (int)options, out subKeyHandle);
//If we had an error, return null
if (result != 0)
{
return(null);
}
RegistryKey subKey = PointerToRegistryKey((IntPtr)subKeyHandle, false, false);
return(subKey);
}
/// <summary>
/// Open a registry key using the Wow64 node instead of the default 32-bit node.
/// </summary>
/// <param name="parentKey">Parent key to the key to be opened.</param>
/// <param name="subKeyName">Name of the key to be opened</param>
/// <param name="writable">Whether or not this key is writable</param>
/// <param name="options">32-bit node or 64-bit node</param>
/// <returns></returns>
static RegistryKey OpenSubKey( RegistryKey parentKey, string subKeyName, bool writable, RegWow64Options options )
{
//Sanity check
if ( parentKey == null || GetRegistryKeyHandle( parentKey ) == IntPtr.Zero )
{
return null;
}
// Set rights
var rights = (int)RegistryRights.ReadKey;
if ( writable )
{
rights = (int) RegistryRights.WriteKey;
}
// Call the native function
int subKeyHandle, result = RegOpenKeyEx( GetRegistryKeyHandle( parentKey ), subKeyName, 0, rights | (int)options, out subKeyHandle );
// If we error return null
if ( result != 0 )
{
return null;
}
// Get the key represented by the pointer returned by RegOpenKeyEx
var subKey = PointerToRegistryKey( (IntPtr)subKeyHandle, writable, false, options );
return subKey;
}
static RegistryKey OpenSubKey(RegistryKey parentKey, string subKeyName, bool writable, RegWow64Options regOptions)
{
int rights = (int)131097;
if (writable)
rights = (int)131078;
Type keyType = typeof(RegistryKey);
FieldInfo fieldInfo = keyType.GetField("hkey", BindingFlags.NonPublic | BindingFlags.Instance);
IntPtr keyHandle = ((SafeHandle)fieldInfo.GetValue(parentKey)).DangerousGetHandle();
if (parentKey == null || keyHandle == IntPtr.Zero)
return null;
int subKeyHandle, result = RegOpenKeyEx(keyHandle, subKeyName, 0, rights | (int)regOptions, out subKeyHandle);
if (result != 0)
return null;
IntPtr hKey = (IntPtr)subKeyHandle;
Type safeHandleType = typeof(SafeHandleZeroOrMinusOneIsInvalid).Assembly.GetType("Microsoft.Win32.SafeHandles.SafeRegistryHandle");
Type[] safeHandleConstructorTypes = new Type[] { typeof(IntPtr), typeof(bool) };
Type[] keyConstructorTypes = new Type[] { safeHandleType, typeof(bool) };
ConstructorInfo safeHandleConstructorInfo = safeHandleType.GetConstructor(BindingFlags.Instance | BindingFlags.NonPublic, null, safeHandleConstructorTypes, null);
Object[] keyAndOwns = new Object[] { hKey, false };
Object[] invokeParameters = new Object[] { safeHandleConstructorInfo.Invoke(keyAndOwns), writable };
ConstructorInfo keyConstructorInfo = keyType.GetConstructor(BindingFlags.Instance | BindingFlags.NonPublic, null, keyConstructorTypes, null);
return (RegistryKey)keyConstructorInfo.Invoke(invokeParameters);
}
private static RegistryKey _openSubKey(RegistryKey parentKey, string subKeyName, bool writable, RegWow64Options options, out IntPtr subKeyHandle)
{
//Sanity check
if (parentKey == null || _getRegistryKeyHandle(parentKey) == IntPtr.Zero)
{
subKeyHandle = IntPtr.Zero;
return(null);
}
//Set rights
int rights = (int)RegistryRights.ReadKey;
if (writable)
{
rights = (int)RegistryRights.WriteKey;
}
//Call the native function >.<
int x, result = RegOpenKeyEx(_getRegistryKeyHandle(parentKey), subKeyName, 0, rights | (int)options, out x);
subKeyHandle = (IntPtr)result;
//If we errored, throw an exception
if (result != 0)
{
throw new System.ComponentModel.Win32Exception("Exception encountered opening registry key.");
}
//Get the key represented by the pointer returned by RegOpenKeyEx
RegistryKey subKey = _pointerToRegistryKey(subKeyHandle, writable, false);
return(subKey);
}
/// <summary>
/// Open a registry key using the Wow64 node instead of the default 32-bit node.
/// </summary>
/// <param name="parentKey">Parent key to the key to be opened.</param>
/// <param name="subKeyName">Name of the key to be opened</param>
/// <param name="writable">Whether or not this key is writable</param>
/// <param name="options">32-bit node or 64-bit node</param>
/// <returns></returns>
static RegistryKey OpenSubKey(RegistryKey parentKey, string subKeyName, bool writable, RegWow64Options options)
{
//Sanity check
if (parentKey == null || GetRegistryKeyHandle(parentKey) == IntPtr.Zero)
{
return(null);
}
// Set rights
var rights = (int)RegistryRights.ReadKey;
if (writable)
{
rights = (int)RegistryRights.WriteKey;
}
// Call the native function
int subKeyHandle, result = RegOpenKeyEx(GetRegistryKeyHandle(parentKey), subKeyName, 0, rights | (int)options, out subKeyHandle);
// If we error return null
if (result != 0)
{
return(null);
}
// Get the key represented by the pointer returned by RegOpenKeyEx
var subKey = PointerToRegistryKey((IntPtr)subKeyHandle, writable, false, options);
return(subKey);
}
/// <summary>
/// Get a registry key from a pointer.
/// </summary>
/// <param name="hKey">Pointer to the registry key</param>
/// <param name="writable">Whether or not the key is writable.</param>
/// <param name="ownsHandle">Whether or not we own the handle.</param>
/// <returns>Registry key pointed to by the given pointer.</returns>
static RegistryKey PointerToRegistryKey(IntPtr hKey, bool writable, bool ownsHandle, RegWow64Options options)
{
// Get the BindingFlags for private and public constructors
const BindingFlags constructorFlags = BindingFlags.Instance | BindingFlags.NonPublic | BindingFlags.Public;
// Get the Type for the SafeRegistryHandle
var safeRegistryHandleType = typeof(Microsoft.Win32.SafeHandles.SafeHandleZeroOrMinusOneIsInvalid).Assembly.GetType("Microsoft.Win32.SafeHandles.SafeRegistryHandle");
// Get the array of types matching the args of the ctor we want
var safeRegistryHandleCtorTypes = new Type[] { typeof(IntPtr), typeof(bool) };
//G et the constructor info for our object
var safeRegistryHandleCtorInfo = safeRegistryHandleType.GetConstructor(constructorFlags, null, safeRegistryHandleCtorTypes, null);
// Invoke the constructor, getting us a SafeRegistryHandle
var safeHandle = safeRegistryHandleCtorInfo.Invoke(new Object[] { hKey, ownsHandle });
// Get the type of a RegistryKey
var registryKeyType = typeof(RegistryKey);
// Get the array of types matching the args of the ctor we want.
// .NET 4: The RegistryKey constructor (private) has changed in .NET4, so we need to adjust for this.
// As it uses a type not in lower versions of .NET, we can't explicitly reference it as we
// need to compile in lower versions.
var registryKeyConstructorTypes = Environment.Version.Major == 4
? new Type[] { safeRegistryHandleType, typeof(bool), Type.GetType("Microsoft.Win32.RegistryView") } // .NET 4 constructor version
: new Type[] { safeRegistryHandleType, typeof(bool) }; // .NET 3.5 and below
// Get the constructor info for our object
var registryKeyCtorInfo = registryKeyType.GetConstructor(constructorFlags, null, registryKeyConstructorTypes, null);
// Invoke the constructor, getting us a RegistryKey
if (Environment.Version.Major == 4)
{
// .NET 4: Need to create the right enum type without explicit reference to it so that we
// can compile in .NET 3.5.
var rvType = Type.GetType("Microsoft.Win32.RegistryView");
var enumVal = Enum.Parse(rvType, "Default", true);
switch (options)
{
case RegWow64Options.KEY_WOW64_32KEY:
enumVal = Enum.Parse(rvType, "Registry32", true);
break;
case RegWow64Options.KEY_WOW64_64KEY:
enumVal = Enum.Parse(rvType, "Registry64", true);
break;
}
return((RegistryKey)registryKeyCtorInfo.Invoke(new Object[] { safeHandle, writable, enumVal }));
}
return((RegistryKey)registryKeyCtorInfo.Invoke(new Object[] { safeHandle, writable }));
}
/// <summary>
/// Get a registry key from a pointer.
/// </summary>
/// <param name="hKey">Pointer to the registry key</param>
/// <param name="writable">Whether or not the key is writable.</param>
/// <param name="ownsHandle">Whether or not we own the handle.</param>
/// <returns>Registry key pointed to by the given pointer.</returns>
static RegistryKey PointerToRegistryKey( IntPtr hKey, bool writable, bool ownsHandle, RegWow64Options options )
{
// Get the BindingFlags for private and public constructors
const BindingFlags constructorFlags = BindingFlags.Instance | BindingFlags.NonPublic | BindingFlags.Public;
// Get the Type for the SafeRegistryHandle
var safeRegistryHandleType = typeof( Microsoft.Win32.SafeHandles.SafeHandleZeroOrMinusOneIsInvalid ).Assembly.GetType( "Microsoft.Win32.SafeHandles.SafeRegistryHandle" );
// Get the array of types matching the args of the ctor we want
var safeRegistryHandleCtorTypes = new Type[] { typeof( IntPtr ), typeof( bool ) };
//G et the constructor info for our object
var safeRegistryHandleCtorInfo = safeRegistryHandleType.GetConstructor( constructorFlags, null, safeRegistryHandleCtorTypes, null );
// Invoke the constructor, getting us a SafeRegistryHandle
var safeHandle = safeRegistryHandleCtorInfo.Invoke( new Object[] { hKey, ownsHandle } );
// Get the type of a RegistryKey
var registryKeyType = typeof( RegistryKey );
// Get the array of types matching the args of the ctor we want.
// .NET 4: The RegistryKey constructor (private) has changed in .NET4, so we need to adjust for this.
// As it uses a type not in lower versions of .NET, we can't explicitly reference it as we
// need to compile in lower versions.
var registryKeyConstructorTypes = Environment.Version.Major == 4
? new Type[] { safeRegistryHandleType, typeof( bool ), Type.GetType( "Microsoft.Win32.RegistryView" ) } // .NET 4 constructor version
: new Type[] { safeRegistryHandleType, typeof( bool ) }; // .NET 3.5 and below
// Get the constructor info for our object
var registryKeyCtorInfo = registryKeyType.GetConstructor( constructorFlags, null, registryKeyConstructorTypes, null );
// Invoke the constructor, getting us a RegistryKey
if ( Environment.Version.Major == 4 )
{
// .NET 4: Need to create the right enum type without explicit reference to it so that we
// can compile in .NET 3.5.
var rvType = Type.GetType( "Microsoft.Win32.RegistryView" );
var enumVal = Enum.Parse( rvType, "Default", true );
switch ( options )
{
case RegWow64Options.KEY_WOW64_32KEY:
enumVal = Enum.Parse( rvType, "Registry32", true );
break;
case RegWow64Options.KEY_WOW64_64KEY:
enumVal = Enum.Parse( rvType, "Registry64", true );
break;
}
return (RegistryKey)registryKeyCtorInfo.Invoke( new Object[] { safeHandle, writable, enumVal } );
}
return (RegistryKey)registryKeyCtorInfo.Invoke( new Object[] { safeHandle, writable } );
}
static RegistryKey OpenSubKey(RegistryKey parentKey, string subKeyName, bool writable, RegWow64Options regOptions)
{
int rights = (int)131097;
if (writable)
{
rights = (int)131078;
}
Type keyType = typeof(RegistryKey);
FieldInfo fieldInfo = keyType.GetField("hkey", BindingFlags.NonPublic | BindingFlags.Instance);
IntPtr keyHandle = ((SafeHandle)fieldInfo.GetValue(parentKey)).DangerousGetHandle();
if (parentKey == null || keyHandle == IntPtr.Zero)
{
return(null);
}
int subKeyHandle, result = RegOpenKeyEx(keyHandle, subKeyName, 0, rights | (int)regOptions, out subKeyHandle);
if (result != 0)
{
return(null);
}
IntPtr hKey = (IntPtr)subKeyHandle;
Type safeHandleType = typeof(SafeHandleZeroOrMinusOneIsInvalid).Assembly.GetType("Microsoft.Win32.SafeHandles.SafeRegistryHandle");
Type[] safeHandleConstructorTypes = new Type[] { typeof(IntPtr), typeof(bool) };
Type[] keyConstructorTypes = new Type[] { safeHandleType, typeof(bool) };
ConstructorInfo safeHandleConstructorInfo = safeHandleType.GetConstructor(BindingFlags.Instance | BindingFlags.NonPublic, null, safeHandleConstructorTypes, null);
Object[] keyAndOwns = new Object[] { hKey, false };
Object[] invokeParameters = new Object[] { safeHandleConstructorInfo.Invoke(keyAndOwns), writable };
ConstructorInfo keyConstructorInfo = keyType.GetConstructor(BindingFlags.Instance | BindingFlags.NonPublic, null, keyConstructorTypes, null);
return((RegistryKey)keyConstructorInfo.Invoke(invokeParameters));
}
private static RegistryKey _openSubKey(RegistryKey parentKey, string subKeyName, bool writable, RegWow64Options options, out IntPtr subKeyHandle)
{
//Sanity check
if (parentKey == null || _getRegistryKeyHandle(parentKey) == IntPtr.Zero)
{
subKeyHandle = IntPtr.Zero;
return null;
}
//Set rights
int rights = (int)RegistryRights.ReadKey;
if (writable)
rights = (int)RegistryRights.WriteKey;
//Call the native function >.<
int x, result = RegOpenKeyEx(_getRegistryKeyHandle(parentKey), subKeyName, 0, rights | (int)options, out x);
subKeyHandle = (IntPtr)result;
//If we errored, throw an exception
if (result != 0)
{
throw new System.ComponentModel.Win32Exception("Exception encountered opening registry key.");
}
//Get the key represented by the pointer returned by RegOpenKeyEx
RegistryKey subKey = _pointerToRegistryKey(subKeyHandle, writable, false);
return subKey;
}
