[tor-bugs] #4473 [Tor Client]: Disallow ControlPort auto unless ControlPortWriteToFile also set?

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#4473: Disallow ControlPort auto unless ControlPortWriteToFile also set?
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 Reporter:  arma        |          Owner:                    
     Type:  defect      |         Status:  new               
 Priority:  normal      |      Milestone:  Tor: 0.2.3.x-final
Component:  Tor Client  |        Version:                    
 Keywords:              |         Parent:                    
   Points:              |   Actualpoints:                    
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 If you set controlport auto but you don't set ControlPortWriteToFile, it
 works, but there's no (automated) way for controllers to find your control
 port.

 A user in #tor just set up his Tor that way.

 Should Tor demand that ControlPortWriteToFile is set when ControlPort auto
 is chosen? Or do we think the use case of "expert user looks at log file
 and configures controller by hand" outweighs the "user thinks he set it up
 right but didn't" failure mode?

 This is a bug in 0.2.2.x too, but my initial guess is that we want to mess
 with 0.2.2.x here.

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Ticket URL: <https://trac.torproject.org/projects/tor/ticket/4473>
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