2009/1/25 Clodoaldo Pinto Neto <[email protected]>:
> 2009/1/25 Graham Dumpleton <[email protected]>:
>>
>> 2009/1/25 gert <[email protected]>:
>>>
>>>
>>>
>>> On Jan 25, 2:59 am, Graham Dumpleton <[email protected]>
>>> wrote:
>>>> 2009/1/25 gert <[email protected]>:
>>>>
>>>> > What does this mean ?
>>>>
>>>> > [Sun Jan 25 01:10:02 2009] [error] [client 217.136.57.14] Traceback
>>>> > (most recent call last):
>>>> > [Sun Jan 25 01:10:02 2009] [error] [client 217.136.57.14] File "/
>>>> > home/www/appwsgi/www/lib/upload.py", line 12, in application
>>>> > [Sun Jan 25 01:10:02 2009] [error] [client 217.136.57.14] s =
>>>> > environ['wsgi.input'].read().decode('latin1')
>>>> > [Sun Jan 25 01:10:02 2009] [error] [client 217.136.57.14] SystemError:
>>>> > Objects/bytesobject.c:3171: bad argument to internal function
>>>>
>>>> It means something bad happened. What is the exact line and
>>>> surrounding lines of Python code in WSGI application doing?
>>>>
>>>> Include the existing contents of the email in the reply so context not
>>>> lost. Do not reply with only the new stuff you want to add as it makes
>>>> it very hard to track the conversation.
>>>
>>> def application(environ, response):
>>> db = Db()
>>> cookie = "SID="+environ['QUERY_STRING']
>>> session = Session(db,cookie,'guest')
>>> response('200 OK', [('Content-type', 'text/xml'), ('Set-Cookie',
>>> session.COOKIE)])
>>> if not session.GID : return []
>>> s = environ['wsgi.input'].read().decode('latin1')
>>> p = search(r'Content-Type: application/octet-stream\r\n\r\n(.*?)\r
>>> \n--',s,DOTALL).group(1)
>>> db.execute('UPDATE users SET picture=? WHERE uid=?',(p.encode
>>> ('latin1'),session.UID))
>>> xml = "<?xml version=\"1.0\" encoding=\"UTF-8\"?>"
>>> xml+= "<root>"+str(db.ERROR)+"</root>"
>>> response('200 OK', [('Content-type', 'text/xml')])
>>> return [xml]
>>>
>>> i get this error on files with a size of 182 KB
>>
>> Does it only happen for this specific file upload and does it happen
>> repeatably?
>>
>> Regarding the line:
>>
>> s = environ['wsgi.input'].read().decode('latin1')
>>
>> First off, this is not WSGI compliant. To be compliant with WSGI
>> specification you must supply a length to read() when it is called on
>> wsgi.input.
>>
>> I want you to first off replace that line with:
>>
>> length = int(environ.get("CONTENT_LENGTH", "0"))
>
> Didn't test with modwsgi but with python built in wsgi server that is
> not enough since it sets CONTENT_LENGTH to empty so this is necessary:
>
> try:
> length = int(environ['CONTENT_LENGTH'])
> except (TypeError, ValueError):
> length = 0
>
Just tested in modwsgi and the above raises Key Error. To satisfy both
cases (no key and empty value) this works:
try:
length = int(environ.get('CONTENT_LENGTH', 0))
except (ValueError):
length = 0
> Regards, Clodoaldo
>
>> print("LENGTH=%d", length, file=environ["wsgi.errors"])
>>
>> data = environ['wsgi.input'].read(length)
>> print("TYPE=%s", type(data), file=environ["wsgi.errors"])
>> print("DATA=%s", repr(data), file=environ["wsgi.errors"])
>>
>> s = data.decode("latin1")
>> print("STRING=%s", repr(s), file=environ["wsgi.errors"])
>>
>> Then instead of that replace it with:
>>
>> data = environ['wsgi.input'].read()
>> print("TYPE=%s", type(data), file=environ["wsgi.errors"])
>> print("DATA=%s", repr(data), file=environ["wsgi.errors"])
>>
>> s = data.decode("latin1")
>> print("STRING=%s", repr(s), file=environ["wsgi.errors"])
>>
>> Post the output from Apache error logs for both.
>>
>> This will help narrow down whether problem is in Python with decoding
>> bytes to latin1 string, or whether there is an issue in mod_wsgi with
>> calling read() with no argument, which as I said before is outside of
>> what WSGI specification allows anyway.
>>
>> Graham
>>
>> >>
>>
>
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