From 5e4bca3747b36a78d21fbc3c6d056f05b4ad2c98 Mon Sep 17 00:00:00 2001
From: Vincent Richard <vincent@vincent-richard.net>
Date: Wed, 14 Jan 2015 19:31:31 +0100
Subject: [PATCH] Stop decoding when there are no more input bytes.

---
 src/vmime/utility/encoder/b64Encoder.cpp | 3 +++
 1 file changed, 3 insertions(+)

diff --git a/src/vmime/utility/encoder/b64Encoder.cpp b/src/vmime/utility/encoder/b64Encoder.cpp
index 274c23c0..ddaa62f8 100644
--- a/src/vmime/utility/encoder/b64Encoder.cpp
+++ b/src/vmime/utility/encoder/b64Encoder.cpp
@@ -258,6 +258,9 @@ size_t b64Encoder::decode(utility::inputStream& in,
 			}
 		}
 
+		if (count != 4)  // input length is not a multiple of 4 bytes
+			break;
+
 		// Decode the bytes
 		byte_t c1 = bytes[0];
 		byte_t c2 = bytes[1];