On Jan 25, 1:30 pm, Graham Dumpleton <[email protected]>
wrote:
> 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"))
> 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.
specifying the length works.
WSGI say's you have to specify length, but it also does not state that
it should crash if you don't :-)
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