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Packages/com.tivadar.best.http/Runtime/3rdParty/BouncyCastle/asn1/DerUniversalString.cs

@@ -0,0 +1,177 @@
+#if !BESTHTTP_DISABLE_ALTERNATE_SSL && (!UNITY_WEBGL || UNITY_EDITOR)
+#pragma warning disable
+using System;
+using System.Diagnostics;
+using System.IO;
+using System.Text;
+
+using Best.HTTP.SecureProtocol.Org.BouncyCastle.Utilities;
+
+namespace Best.HTTP.SecureProtocol.Org.BouncyCastle.Asn1
+{
+    /**
+     * UniversalString object.
+     */
+    public class DerUniversalString
+        : DerStringBase
+    {
+        internal class Meta : Asn1UniversalType
+        {
+            internal static readonly Asn1UniversalType Instance = new Meta();
+
+            private Meta() : base(typeof(DerUniversalString), Asn1Tags.UniversalString) {}
+
+            internal override Asn1Object FromImplicitPrimitive(DerOctetString octetString)
+            {
+                return CreatePrimitive(octetString.GetOctets());
+            }
+        }
+
+        private static readonly char[] table = { '0', '1', '2', '3', '4', '5', '6', '7', '8', '9', 'A', 'B', 'C', 'D', 'E', 'F' };
+
+		/**
+         * return a universal string from the passed in object.
+         *
+         * @exception ArgumentException if the object cannot be converted.
+         */
+        public static DerUniversalString GetInstance(object obj)
+        {
+            if (obj == null)
+                return null;
+
+            if (obj is DerUniversalString derUniversalString)
+                return derUniversalString;
+
+            if (obj is IAsn1Convertible asn1Convertible)
+            {
+                Asn1Object asn1Object = asn1Convertible.ToAsn1Object();
+                if (asn1Object is DerUniversalString converted)
+                    return converted;
+            }
+            else if (obj is byte[] bytes)
+            {
+                try
+                {
+                    return (DerUniversalString)Meta.Instance.FromByteArray(bytes);
+                }
+                catch (IOException e)
+                {
+                    throw new ArgumentException("failed to construct universal string from byte[]: " + e.Message);
+                }
+            }
+
+            throw new ArgumentException("illegal object in GetInstance: " + Org.BouncyCastle.Utilities.Platform.GetTypeName(obj));
+        }
+
+        /**
+         * return a universal string from a tagged object.
+         *
+         * @param taggedObject the tagged object holding the object we want
+         * @param declaredExplicit true if the object is meant to be explicitly tagged false otherwise.
+         * @exception ArgumentException if the tagged object cannot be converted.
+         */
+        public static DerUniversalString GetInstance(Asn1TaggedObject taggedObject, bool declaredExplicit)
+        {
+            return (DerUniversalString)Meta.Instance.GetContextInstance(taggedObject, declaredExplicit);
+        }
+
+        private readonly byte[] m_contents;
+
+        public DerUniversalString(byte[] contents)
+            : this(contents, true)
+        {
+        }
+
+        internal DerUniversalString(byte[] contents, bool clone)
+        {
+            if (null == contents)
+                throw new ArgumentNullException("contents");
+
+            m_contents = clone ? Arrays.Clone(contents) : contents;
+        }
+
+        public override string GetString()
+        {
+            int dl = m_contents.Length;
+            int capacity = 3 + 2 * (Asn1OutputStream.GetLengthOfDL(dl) + dl);
+            StringBuilder buf = new StringBuilder("#1C", capacity);
+            EncodeHexDL(buf, dl);
+
+            for (int i = 0; i < dl; ++i)
+            {
+                EncodeHexByte(buf, m_contents[i]);
+            }
+
+            Debug.Assert(buf.Length == capacity);
+            return buf.ToString();
+        }
+
+        public byte[] GetOctets()
+        {
+            return Arrays.Clone(m_contents);
+        }
+
+        internal override IAsn1Encoding GetEncoding(int encoding)
+        {
+            return new PrimitiveEncoding(Asn1Tags.Universal, Asn1Tags.UniversalString, m_contents);
+        }
+
+        internal override IAsn1Encoding GetEncodingImplicit(int encoding, int tagClass, int tagNo)
+        {
+            return new PrimitiveEncoding(tagClass, tagNo, m_contents);
+        }
+
+        protected override bool Asn1Equals(Asn1Object asn1Object)
+        {
+            DerUniversalString that = asn1Object as DerUniversalString;
+            return null != that
+                && Arrays.AreEqual(this.m_contents, that.m_contents);
+        }
+
+        protected override int Asn1GetHashCode()
+        {
+            return Arrays.GetHashCode(m_contents);
+        }
+
+        internal static DerUniversalString CreatePrimitive(byte[] contents)
+        {
+            return new DerUniversalString(contents, false);
+        }
+
+        private static void EncodeHexByte(StringBuilder buf, int i)
+        {
+            buf.Append(table[(i >> 4) & 0xF]);
+            buf.Append(table[i & 0xF]);
+        }
+
+        private static void EncodeHexDL(StringBuilder buf, int dl)
+        {
+            if (dl < 128)
+            {
+                EncodeHexByte(buf, dl);
+                return;
+            }
+
+            byte[] stack = new byte[5];
+            int pos = 5;
+
+            do
+            {
+                stack[--pos] = (byte)dl;
+                dl >>= 8;
+            }
+            while (dl != 0);
+
+            int count = stack.Length - pos;
+            stack[--pos] = (byte)(0x80 | count);
+
+            do
+            {
+                EncodeHexByte(buf, stack[pos++]);
+            }
+            while (pos < stack.Length);
+        }
+    }
+}
+#pragma warning restore
+#endif