[tor-bugs] #2972 [Tor Client]: Allow ControlSocket to be group writable

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#2972: Allow ControlSocket to be group writable
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 Reporter:  lunar        |          Owner:                  
     Type:  enhancement  |         Status:  new             
 Priority:  normal       |      Milestone:                  
Component:  Tor Client   |        Version:  Tor: unspecified
 Keywords:               |         Parent:                  
   Points:               |   Actualpoints:                  
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 This is an attempt to move <http://bugs.debian.org/cgi-
 bin/bugreport.cgi?bug=552556> foward.

 Right now, ControlPort + CookieAuthFileGroupReadable offers a way for
 specific users (members of the same group as the Tor process) to controel
 a system-wide Tor daemon. It would be great to have a similar access
 control mechanism for ControlSocket.

 The attached patch is an attempt to implement such behaviour. It adds a
 new configuration option, `UnixSocketsGroupWritable`, which when enabled,
 will make socket `g+rw` upon creation.

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Ticket URL: <https://trac.torproject.org/projects/tor/ticket/2972>
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