XML RPC changes between 3.7 and 3.9 yield 401 http error

[lucas]

Hi, thanks for your answer !

I updated everything, including certificates, while upgrading to python 
3.9, and retried today (no new certificates to install). I am the 
administrator of the wiki i try to access, and didn't do black magic in 
the configuration..

The error really seems to came from 3.8 or 3.9, since i can still reach 
the wiki nominally with my (some being non-updated) machines using 
python 3.7. This didn't evolve since i discovered the problem few days ago.

--lucas


On 24/02/2021 16:20, 2QdxY4RzWzUUiLuE at potatochowder.com wrote:
> On 2021-02-24 at 15:29:58 +0100,
> lucas <lucas at bourneuf.net> wrote:
> 
>> I'm currently trying to understand an error when using the dokuwikixmlrpc
>> python module, allowing to easily work with DokuWiki RPC interface.
>>
>> Another description of the problem :
>> 	https://github.com/kynan/dokuwikixmlrpc/issues/8
>>
>> Here is the code, tailored to work with the DokuWiki RPC interface:
>>
>>      from urllib.parse import urlencode
>>      import xmlrpc.client as xmlrpclib
>>
>>      URL = 'wiki.example.net'
>>      USER = 'user'
>>      PASSWD = 'password'
>>      USER_AGENT = 'DokuWikiXMLRPC  1.0  for testing'
>>
>>      script = '/lib/exe/xmlrpc.php'
>>      url = URL + script + '?' + urlencode({'u': USER, 'p': PASSWD})
>>      xmlrpclib.Transport.user_agent = USER_AGENT
>>      xmlrpclib.SafeTransport.user_agent = USER_AGENT
>>      proxy = xmlrpclib.ServerProxy(url)
>>
>>      v = proxy.dokuwiki.getVersion()
>>      print(v)
>>
>> When ran with Python 3.7 (a personnal debian server, or a personal windows
>> computer), i obtain the expected 'Release 2018-04-22a "Greebo"' as ouput.
>> When ran with Python 3.9 (my personnal, manjaro machine), i obtain the
>> following stacktrace:
>>
>>      Traceback (most recent call last):
>>        File "/home/project/read.py", line 32, in <module>
>>          v = proxy.dokuwiki.getVersion()
>>        File "/usr/lib/python3.9/xmlrpc/client.py", line 1116, in __call__
>>          return self.__send(self.__name, args)
>>        File "/usr/lib/python3.9/xmlrpc/client.py", line 1456, in __request
>>          response = self.__transport.request(
>>        File "/usr/lib/python3.9/xmlrpc/client.py", line 1160, in request
>>          return self.single_request(host, handler, request_body, verbose)
>>        File "/usr/lib/python3.9/xmlrpc/client.py", line 1190, in
>> single_request
>>          raise ProtocolError(
>>      xmlrpc.client.ProtocolError: <ProtocolError for
>> wiki.example.net/lib/exe/xmlrpc.php: 401 Unauthorized>
> 
> At the risk of stating the obvious, it might actually be an
> authentication problem.  In addition to double checking the password:
> 
> (1) make sure all of your certificates (under Arch Linux, on which
> Manjaro is based), that's the ca-certificates package) are up to date;
> and
> 
> (2) check with whoever owns the wiki about any other certificates they
> require.
> 
> After that, all I know about XML RPC is to avoid it.  :-)
> 
>> I don't have the possibility to test this on python 3.8 specifically, but
>> since the XML and XMLRPC modules have been updated in 3.8, and since 3.9
>> doesn't seems to introduce any change for them, i would expect 3.8 to
>> introduce some change that dokuwikixmlrpc has somehow to take into
>> consideration.
>>
>> Can anyone help me with that one ? I don't know anything about RPC and XML,
>> i don't know what i need to do know to fix dokuwikixmlrpc.