// Open a registry key for a local or remote machine.
public static RegistryKey OpenRemoteBaseKey(RegistryHive hKey,
String machineName)
{
// Validate the parameters.
if (hKey < RegistryHive.ClassesRoot ||
hKey > RegistryHive.DynData)
{
throw new ArgumentException(_("Arg_InvalidHive"));
}
if (machineName == null)
{
throw new ArgumentNullException("machineName");
}
// Get the name of the hive to be accessed.
String name = hiveNames
[((int)hKey) - (int)(RegistryHive.ClassesRoot)];
// Is this a remote hive reference?
if (machineName != String.Empty)
{
if (Win32KeyProvider.IsWin32())
{
// Attempt to connect to the remote registry.
IntPtr newKey;
if (Win32KeyProvider.RegConnectRegistry
(machineName,
Win32KeyProvider.HiveToHKey(hKey),
out newKey) != 0)
{
throw new SecurityException
(_("Invalid_RemoteRegistry"));
}
return(new RegistryKey
(new Win32KeyProvider(name, newKey), true));
}
else
{
// Not Win32 - cannot access remote registries.
throw new SecurityException
(_("Invalid_RemoteRegistry"));
}
}
// Open a local hive.
return(new RegistryKey
(Registry.GetProvider(hKey, name), true));
}
// Get a registry key provider for a particular hive.
internal static IRegistryKeyProvider GetProvider
(RegistryHive hKey, String name)
{
int index;
lock (typeof(Registry))
{
// Allocate the "providers" array if necessary.
if (providers == null)
{
providers = new IRegistryKeyProvider[7];
}
// See if we already have a provider for this hive.
index = ((int)hKey) - ((int)(RegistryHive.ClassesRoot));
if (providers[index] != null)
{
return(providers[index]);
}
// Create a Win32 provider if we are on a Windows system.
if (Win32KeyProvider.IsWin32())
{
providers[index] = new Win32KeyProvider
(name, Win32KeyProvider.HiveToHKey(hKey));
return(providers[index]);
}
// Try to create a file-based provider for the hive.
try
{
providers[index] = new FileKeyProvider(hKey, name);
return(providers[index]);
}
catch (NotSupportedException)
{
// Could not create the hive directory - fall through.
}
// Create a memory-based provider on all other systems.
providers[index] = new MemoryKeyProvider
(null, name, name);
return(providers[index]);
}
}