[jira] [Created] (CAMEL-6853) UnsafeUriCharactersEncoder is missing hex digits

["Thomas Konstantinides (JIRA)" <ji...@apache.org>]

Thomas Konstantinides created CAMEL-6853:
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             Summary: UnsafeUriCharactersEncoder is missing hex digits
                 Key: CAMEL-6853
                 URL: https://issues.apache.org/jira/browse/CAMEL-6853
             Project: Camel
          Issue Type: Bug
          Components: camel-core
    Affects Versions: 2.12.1
            Reporter: Thomas Konstantinides


The class UnsafeUriCharactersEncoder has a char[] HEX_DIGITS which includes hex digits that can be used in encoded urls following the % sign. However the char[] only contains the uppercase hexadecimal digits 'A' through 'F' which (following RFC 3986, chapter 2.1) are equivalent to the lowercase digits 'a' through 'f' in percent-encoding used in URIs. 

So the char[] should also contain the lowercase digits 'a' through 'f', because otherwise the class does not work correctly in cases where URLs with already encoded characters having lowercase hex digits are encoded (e.g. URL with %3c). For these URLs the % sign is encoded once again (making it %253c in the example).

The provided patch adds the lowercase hex digits to the HEX_DIGITS char[].

Regards,
Thomas



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