You are viewing a plain text version of this content. The canonical link for it is here.

Posted to c-dev@xerces.apache.org by bu...@apache.org on 2002/06/24 20:10:17 UTC

DO NOT REPLY [Bug 10188] New: - Base64::encode bug handling last quartet

DO NOT REPLY TO THIS EMAIL, BUT PLEASE POST YOUR BUG 
RELATED COMMENTS THROUGH THE WEB INTERFACE AVAILABLE AT
<http://nagoya.apache.org/bugzilla/show_bug.cgi?id=10188>.
ANY REPLY MADE TO THIS MESSAGE WILL NOT BE COLLECTED AND 
INSERTED IN THE BUG DATABASE.

http://nagoya.apache.org/bugzilla/show_bug.cgi?id=10188

Base64::encode bug handling last quartet

           Summary: Base64::encode bug handling last quartet
           Product: Xerces-C++
           Version: 1.7.0
          Platform: All
        OS/Version: All
            Status: NEW
          Severity: Normal
          Priority: Other
         Component: Utilities
        AssignedTo: xerces-c-dev@xml.apache.org
        ReportedBy: ewittmann@scopeware.com


The else clause on line 209 of Base64.cpp needs the following line:

encodedData[ outputIndex++ ] = base64Alphabet[ b2 ];

The reason is that when the last quartet has only 1 byte to encode, b2 (which 
has the last 2 bits) is never encoded.  The result is a 3 character quartet 
instead of a 4 character quartet.

To test, simply pass Base64::encode a buffer with inputLength==1 - the output 
will be only 3 characters, two of which are padding '='.

---------------------------------------------------------------------
To unsubscribe, e-mail: xerces-c-dev-unsubscribe@xml.apache.org
For additional commands, e-mail: xerces-c-dev-help@xml.apache.org