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From "David Allsopp (JIRA)" <>
Subject [jira] [Created] (CASSANDRA-2851) hex-to-bytes conversion accepts invalid inputs silently
Date Sun, 03 Jul 2011 18:06:21 GMT
hex-to-bytes conversion accepts invalid inputs silently

                 Key: CASSANDRA-2851
             Project: Cassandra
          Issue Type: Bug
          Components: Core
    Affects Versions: 0.8.1, 0.7.6
            Reporter: David Allsopp
            Priority: Minor
             Fix For: 0.8.2

FBUtilities.hexToBytes() has a minor bug - it copes with single-character inputs by prepending
"0", which is OK - but it does this for any input with an odd number of characters, which
is probably incorrect.

if (str.length() % 2 == 1)
    str = "0" + str;

Given 'fff' as an input, can we really assume that this should be '0fff'? Isn't this just
an error?

Add the following to FBUtilitiesTest to demonstrate:

String[] badvalues = new String[]{"", "000", "fff"};
for (int i = 0; i < badvalues.length; i++)
        fail("Invalid hex value accepted"+badvalues[i]);
    } catch (Exception e){}

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