[jira] [Created] (QPID-7109) Python wrapper for qpid-cpp cannot handle unicode data.

["Håkan Johansson (JIRA)" <ji...@apache.org>]

Håkan Johansson created QPID-7109:
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             Summary: Python wrapper for qpid-cpp cannot handle unicode data.
                 Key: QPID-7109
                 URL: https://issues.apache.org/jira/browse/QPID-7109
             Project: Qpid
          Issue Type: Bug
          Components: Python Client (Wrapped)
    Affects Versions: qpid-cpp-0.34
         Environment: Red Hat Enterprise Linux Server release 6.7 (Santiago)
            Reporter: Håkan Johansson


The Python wrapper for the _qpid-cpp_ library cannot handle unicode data properly. The reason for this is how {{unicode}} objects are encoded in the {{PyToVariant}} function, which is located in the {{"swig_python_typemaps.i"}} file.

{{PyToVariant}} uses the {{PyUnicode_AS_DATA}} to encode the data, but that is wrong. It returns the internal representation of the data, which usually is UTF-16, but that depends on how the Python libraries where built. The {{VariantToPy}} function correctly uses the {{PyUnicode_DecodeUTF8}} function, but that is not compatible with the data returned from {{PyUnicode_AS_DATA}}.

The proper solution is to either use {{PyUnicode_EncodeUTF8}} or {{PyUnicode_AsUTF8String}}, including proper error handling.



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