- Initial commit

Runtime/3rdParty/BouncyCastle/cms/CMSProcessableInputStream.cs

@@ -0,0 +1,51 @@
+#if !BESTHTTP_DISABLE_ALTERNATE_SSL && (!UNITY_WEBGL || UNITY_EDITOR)
+#pragma warning disable
+using System;
+using System.IO;
+
+using Best.HTTP.SecureProtocol.Org.BouncyCastle.Utilities;
+using Best.HTTP.SecureProtocol.Org.BouncyCastle.Utilities.IO;
+
+namespace Best.HTTP.SecureProtocol.Org.BouncyCastle.Cms
+{
+	public class CmsProcessableInputStream
+		: CmsProcessable, CmsReadable
+	{
+		private readonly Stream input;
+
+        private bool used = false;
+
+        public CmsProcessableInputStream(Stream input)
+		{
+			this.input = input;
+		}
+
+        public virtual Stream GetInputStream()
+		{
+			CheckSingleUsage();
+
+            return input;
+		}
+
+        public virtual void Write(Stream output)
+		{
+			CheckSingleUsage();
+
+			Streams.PipeAll(input, output);
+            input.Dispose();
+		}
+
+        protected virtual void CheckSingleUsage()
+		{
+			lock (this)
+			{
+				if (used)
+					throw new InvalidOperationException("CmsProcessableInputStream can only be used once");
+
+                used = true;
+			}
+		}
+	}
+}
+#pragma warning restore
+#endif