[tor-bugs] #25939 [Core Tor/Tor]: A Tor commit seems to have broken creation of V3 onion services with stem

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#25939: A Tor commit seems to have broken creation of V3 onion services with stem
----------------------------------------+----------------------------------
 Reporter:  maqp                        |          Owner:  dgoulet
     Type:  defect                      |         Status:
                                        |  needs_information
 Priority:  High                        |      Milestone:  Tor:
                                        |  0.3.4.x-final
Component:  Core Tor/Tor                |        Version:
 Severity:  Major                       |     Resolution:
 Keywords:  034-must regression tor-hs  |  Actual Points:
Parent ID:                              |         Points:
 Reviewer:                              |        Sponsor:  Sponsor8
----------------------------------------+----------------------------------
Changes (by atagar):

 * component:  Core Tor/Stem => Core Tor/Tor


Comment:

 Hi maqp, think I see the issues. When I run the following...

 {{{
 import stem.control

 with stem.control.Controller.from_port() as controller:
   controller.authenticate()

   result = controller.create_ephemeral_hidden_service(80, key_content =
 'ED25519-V3', await_publication = True)
   print('service established at %s.onion\n' % result.service_id)
   raw_input('press any key to quit...')
 }}}

 I get...

 {{{
 Exception in thread Event Notifier:
 Traceback (most recent call last):
   File "/usr/lib/python2.7/threading.py", line 801, in __bootstrap_inner
     self.run()
   File "/usr/lib/python2.7/threading.py", line 754, in run
     self.__target(*self.__args, **self.__kwargs)
   File "/home/atagar/Desktop/stem/stem/control.py", line 966, in
 _event_loop
     self._handle_event(event_message)
   File "/home/atagar/Desktop/stem/stem/control.py", line 3830, in
 _handle_event
     stem.response.convert('EVENT', event_message, arrived_at =
 time.time())
   File "/home/atagar/Desktop/stem/stem/response/__init__.py", line 124, in
 convert
     message._parse_message(**kwargs)
   File "/home/atagar/Desktop/stem/stem/response/events.py", line 66, in
 _parse_message
     self._parse()
   File "/home/atagar/Desktop/stem/stem/response/events.py", line 683, in
 _parse
     raise stem.ProtocolError("HS_DESC's directory doesn't match a
 ServerSpec: %s" % self)
 ProtocolError: HS_DESC's directory doesn't match a ServerSpec: HS_DESC
 CREATED  UNKNOWN UNKNOWN nZ5mr9/xASJHx/Fo7JpHialB5E0kC7jFJtaAXNgkPqY
 }}}

 Note the two spaces between 'CREATED' and 'UNKNOWN'. The problem here is
 that tor is filling in an empty string for the HS_DESC's 'Action'. It
 should be...

 {{{
 Action =  "REQUESTED" / "UPLOAD" / "RECEIVED" / "UPLOADED" / "IGNORE" /
           "FAILED" / "CREATED"
 }}}

 This in turn causes Stem to think that the DescriptorID value is the
 fourth field, and it is invalid as the HsDir.

 Sending this back over to tor.

--
Ticket URL: <https://trac.torproject.org/projects/tor/ticket/25939#comment:12>
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