[ python-Bugs-1551427 ] tiny bug in win32_urandom

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Bugs item #1551427, was opened at 2006-09-03 14:03
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Category: Python Library
Group: Python 2.4
Status: Open
Resolution: None
Priority: 5
Submitted By: Rocco Matano (rocco_m)
Assigned to: Nobody/Anonymous (nobody)
Summary: tiny bug in win32_urandom

Initial Comment:
In the file ...\Python-2.4.3\Modules\posixmodule.c the
function win32_urandom
tries to get the addresses of the functions
'CryptAcquireContextA' and
'CryptGenRandom' like this:

pCryptAcquireContext=(CRYPTACQUIRECONTEXTA)GetProcAddress(
    hAdvAPI32, "CryptAcquireContextA");
if (pCryptAcquireContext == NULL)
    return PyErr_Format(PyExc_NotImplementedError,
        "CryptAcquireContextA not found");

pCryptGenRandom = (CRYPTGENRANDOM)GetProcAddress(
    hAdvAPI32, "CryptGenRandom");
if (pCryptAcquireContext == NULL) /* <- test
pCryptGenRandom instead */
    return PyErr_Format(PyExc_NotImplementedError,
        "CryptGenRandom not found");
        
After the second call to GetProcAddress()
pCryptGenRandom should be tested
against NULL.


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