1 files changed, 35 insertions, 0 deletions
diff --git a/crypto/src/asn1/LimitedInputStream.cs b/crypto/src/asn1/LimitedInputStream.cs
new file mode 100644
index 000000000..62486aa77
--- /dev/null
+++ b/crypto/src/asn1/LimitedInputStream.cs
@@ -0,0 +1,35 @@
+using System.IO;
+
+using Org.BouncyCastle.Utilities.IO;
+
+namespace Org.BouncyCastle.Asn1
+{
+    internal abstract class LimitedInputStream
+        : BaseInputStream
+    {
+        protected readonly Stream _in;
+		private int _limit;
+
+        internal LimitedInputStream(
+            Stream	inStream,
+			int		limit)
+        {
+            this._in = inStream;
+			this._limit = limit;
+        }
+
+	    internal virtual int GetRemaining()
+	    {
+	        // TODO: maybe one day this can become more accurate
+	        return _limit;
+	    }
+
+		protected virtual void SetParentEofDetect(bool on)
+        {
+            if (_in is IndefiniteLengthInputStream)
+            {
+                ((IndefiniteLengthInputStream)_in).SetEofOn00(on);
+            }
+        }
+    }
+}