[tor-bugs] #16004 [Tor]: Support Isolation by SCM_CREDENTIALS / SCM_CREDS for AF_UNIX endpoints

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#16004: Support Isolation by SCM_CREDENTIALS / SCM_CREDS for AF_UNIX endpoints
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     Reporter:  anon         |      Owner:
         Type:  enhancement  |     Status:  new
     Priority:  normal       |  Milestone:  Tor: 0.2.???
    Component:  Tor          |    Version:  Tor: unspecified
   Resolution:               |   Keywords:  tor-core, isolation, lorax
Actual Points:               |  Parent ID:
       Points:               |
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Changes (by yawning):

 * keywords:   => tor-core, isolation, lorax
 * version:   => Tor: unspecified
 * milestone:   => Tor: 0.2.???


Comment:

 Better than `SCM_CREDENTIALS`/`SCM_CREDS` would be to use the equally non-
 portable (but easier to use) socket options that return the relevant
 tuple.  `SO_PEERCRED` on Linux, `LOCAL_PEERCRED` (`SOL_SOCKET`) on
 FreeBSD, `LOCAL_PEERCRED` (`SOL_LOCAL`) on Darwin.

 This is a dead trivial amount of code to add, so I could see it being
 really nice for 0.2.7.x if someone has time to write a good implementation
 of it (and I may, if I can spare a hour or two).  It's particularly
 appealing for torsocks, since once AF_UNIX backed socket support lands
 there, it will automagically get strong-ish isolation.

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Ticket URL: <https://trac.torproject.org/projects/tor/ticket/16004#comment:1>
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