X500DistinguishedName.cs

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using Internal.Cryptography.Pal;
 
namespace System.Security.Cryptography.X509Certificates;
 
public sealed class X500DistinguishedName : AsnEncodedData
{
    private volatile string _lazyDistinguishedName;
 
    public string Name
    {
        get
        {
            string text = _lazyDistinguishedName;
            if (text == null)
            {
                text = (_lazyDistinguishedName = Decode(X500DistinguishedNameFlags.Reversed));
            }
            return text;
        }
    }
 
    public X500DistinguishedName(byte[] encodedDistinguishedName)
        : base(new Oid(null, null), encodedDistinguishedName)
    {
    }
 
    public X500DistinguishedName(ReadOnlySpan<byte> encodedDistinguishedName)
        : base(new Oid(null, null), encodedDistinguishedName)
    {
    }
 
    public X500DistinguishedName(AsnEncodedData encodedDistinguishedName)
        : base(encodedDistinguishedName)
    {
    }
 
    public X500DistinguishedName(X500DistinguishedName distinguishedName)
        : base(distinguishedName)
    {
        _lazyDistinguishedName = distinguishedName.Name;
    }
 
    public X500DistinguishedName(string distinguishedName)
        : this(distinguishedName, X500DistinguishedNameFlags.Reversed)
    {
    }
 
    public X500DistinguishedName(string distinguishedName, X500DistinguishedNameFlags flag)
        : base(new Oid(null, null), Encode(distinguishedName, flag))
    {
        _lazyDistinguishedName = distinguishedName;
    }
 
    public string Decode(X500DistinguishedNameFlags flag)
    {
        ThrowIfInvalid(flag);
        return X509Pal.Instance.X500DistinguishedNameDecode(base.RawData, flag);
    }
 
    public override string Format(bool multiLine)
    {
        return X509Pal.Instance.X500DistinguishedNameFormat(base.RawData, multiLine);
    }
 
    private static byte[] Encode(string distinguishedName, X500DistinguishedNameFlags flags)
    {
        if (distinguishedName == null)
        {
            throw new ArgumentNullException("distinguishedName");
        }
        ThrowIfInvalid(flags);
        return X509Pal.Instance.X500DistinguishedNameEncode(distinguishedName, flags);
    }
 
    private static void ThrowIfInvalid(X500DistinguishedNameFlags flags)
    {
        uint num = 29169u;
        if (((uint)flags & ~num) != 0)
        {
            throw new ArgumentException(System.SR.Format(System.SR.Arg_EnumIllegalVal, "flag"));
        }
    }
}