[Mailman-Users] unpack list of wrong size - debugging a single list

[Mark Sapiro]

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chris burgess wrote:
> 
> Here's an example of what I see in the mailman error log for any
> message to this list:
> 
> ---
> 
> Aug 17 15:39:16 2007 (29254) Uncaught runner exception: unpack list of
> wrong size
> Aug 17 15:39:16 2007 (29254) Traceback (most recent call last):
>   File "/usr/lib/mailman/Mailman/Queue/Runner.py", line 111, in _oneloop
>     self._onefile(msg, msgdata)
>   File "/usr/lib/mailman/Mailman/Queue/Runner.py", line 167, in _onefile
>     keepqueued = self._dispose(mlist, msg, msgdata)
>   File "/usr/lib/mailman/Mailman/Queue/IncomingRunner.py", line 130, in _dispose
>     more = self._dopipeline(mlist, msg, msgdata, pipeline)
>   File "/usr/lib/mailman/Mailman/Queue/IncomingRunner.py", line 153,
> in _dopipeline
>     sys.modules[modname].process(mlist, msg, msgdata)
>   File "/var/lib/mailman/Mailman/Handlers/ToDigest.py", line 91, in process
>     send_digests(mlist, mboxfp)
>   File "/var/lib/mailman/Mailman/Handlers/ToDigest.py", line 132, in
> send_digests
>     send_i18n_digests(mlist, mboxfp)
>   File "/var/lib/mailman/Mailman/Handlers/ToDigest.py", line 306, in
> send_i18n_digests
>     msg = scrubber(mlist, msg)
>   File "/var/lib/mailman/Mailman/Handlers/Scrubber.py", line 273, in process
>     url = save_attachment(mlist, part, dir)
>   File "/var/lib/mailman/Mailman/Handlers/Scrubber.py", line 373, in
> save_attachment
>     fnext = os.path.splitext(msg.get_filename(''))[1]
>   File "/usr/lib/python2.3/email/Message.py", line 725, in get_filename
>     filename = self.get_param('filename', missing, 'content-disposition')
>   File "/usr/lib/python2.3/email/Message.py", line 608, in get_param
>     for k, v in self._get_params_preserve(failobj, header):
>   File "/usr/lib/python2.3/email/Message.py", line 555, in _get_params_preserve
>     params = Utils.decode_params(params)
>   File "/usr/lib/python2.3/email/Utils.py", line 337, in decode_params
>     charset, language, value = decode_rfc2231(EMPTYSTRING.join(value))
>   File "/usr/lib/python2.3/email/Utils.py", line 284, in decode_rfc2231
>     charset, language, s = parts
> ValueError: unpack list of wrong size
> 
> ---
> 
> This is the resulting pickle file in qfiles/shunt for the same message:


The shunted message is not the one causing the problem. The problem is
one of the older messages in the lists/<listname>/digest.mbox file.

Every post to the list attempts to produce a digest based on size and
scrubber encounters this error (which is most likely due to a known and
recently fixed bug in RFC 2231 header decoding).

See
<http://mail.python.org/pipermail/mailman-users/2007-July/057768.html>
for additional info on what to look for in the digest.mbox to fix this.

- --
Mark Sapiro <msapiro at value.net>       The highway is for gamblers,
San Francisco Bay Area, California    better use your sense - B. Dylan

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