X-Git-Url: https://git.saurik.com/wxWidgets.git/blobdiff_plain/9a83f860948059b0273b5cc6d9e43fadad3ebfca..cc4d5638c66a409e421420ed7110917755a66788:/src/common/base64.cpp?ds=sidebyside

diff --git a/src/common/base64.cpp b/src/common/base64.cpp
index bf5a613dff..5ee3a7a3c7 100644
--- a/src/common/base64.cpp
+++ b/src/common/base64.cpp
@@ -3,7 +3,6 @@
 // Purpose:     implementation of BASE64 encoding/decoding functions
 // Author:      Charles Reimers, Vadim Zeitlin
 // Created:     2007-06-18
-// RCS-ID:      $Id$
 // Licence:     wxWindows licence
 ///////////////////////////////////////////////////////////////////////////////
 
@@ -187,8 +186,15 @@ wxBase64Decode(void *dst_, size_t dstLen,
 
                 // undo the bit shifting done during encoding
                 *dst++ = in[0] << 2 | in[1] >> 4;
-                *dst++ = in[1] << 4 | in[2] >> 2;
-                *dst++ = in[2] << 6 | in[3];
+
+                // be careful to not overwrite the output buffer with NUL pad
+                // bytes
+                if ( padLen != 2 )
+                {
+                    *dst++ = in[1] << 4 | in[2] >> 2;
+                    if ( !padLen )
+                        *dst++ = in[2] << 6 | in[3];
+                }
             }
 
             n = 0;