[tor-bugs] #3155 [Tor Relay]: Single Underscore in Option Name

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#3155: Single Underscore in Option Name
-----------------------+----------------------------------------------------
 Reporter:  atagar     |          Owner:     
     Type:  defect     |         Status:  new
 Priority:  minor      |      Milestone:     
Component:  Tor Relay  |        Version:     
 Keywords:             |         Parent:     
   Points:             |   Actualpoints:     
-----------------------+----------------------------------------------------
 Config options either start with zero or double underscores with a single
 exception...

 {{{
 >>> conn.getInfo("version")
 '0.2.2.23-alpha (git-b85eb949b528f4d7)'
 >>> print "\n".join(sorted(conn.getInfo("config/names", "").split("\n")))
 ...
 WarnPlaintextPorts CommaList
 WarnUnsafeSocks Boolean
 _UsingTestNetworkDefaults Boolean
 __AllDirActionsPrivate Boolean
 __DisablePredictedCircuits Boolean
 __HashedControlSessionPassword LineList
 __LeaveStreamsUnattached Boolean
 __ReloadTorrcOnSIGHUP Boolean
 }}}

 I asked about this on irc, but I'm not clear from Robert's response if
 this means that '_UsingTestNetworkDefaults' actually shouldn't be exposed
 to the controller.

 08:12 < atagar> I'm finding that most private options start with a double
 underscore, but in one case it's a single underscore... [bit removed since
 trac chokes on the double underscores]
 08:12 < atagar> is this a mistake?
 08:13 < rransom> _UsingTestNetworkDefaults is a fake option.
 08:13 < rransom> The double-underscore options are for use by controllers.
 08:18 < atagar> Fake option? Not following - the single underscore has
 some special meaning?
 08:18 < rransom> atagar: _UsingTestNetworkDefaults is clobbered within Tor
 every time it processes its options.
 08:19 < rransom> The double-underscore options are actual options that can
 be set from outside Tor.
 08:20 < atagar> Is it right then for _UsingTestNetworkDefaults to be
 presented via 'GETINFO config/names'? I'm pretty sure this makes it user
 setable.
 08:20 < atagar> yup, it does

 Feel free to close if presenting the _UsingTestNetworkDefaults option this
 way is intended (though I'd be a little curious then what the single
 underscore should signify for controllers).

 Cheers! -Damian

-- 
Ticket URL: <https://trac.torproject.org/projects/tor/ticket/3155>
Tor Bug Tracker & Wiki <https://trac.torproject.org/>
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