[tor-bugs] #13865 [Tor]: Enable Tor to load Torrc from <stdin> removing the need to write it to filesystem

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#13865: Enable Tor to load Torrc from <stdin> removing the need to write it to
filesystem
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     Reporter:  naif         |      Owner:
         Type:  enhancement  |     Status:  needs_review
     Priority:  normal       |  Milestone:  Tor: 0.2.6.x-final
    Component:  Tor          |    Version:
   Resolution:               |   Keywords:  tor,txtorconn,torrc lorax
Actual Points:               |  Parent ID:
       Points:               |
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Comment (by nickm):

 I agree that tests would be good.  The code looks mostly plausible.  A few
 suggestions:

  * Make read_torrc_from_stdin const.

  * Maybe instead of a trinary `... ? ... : ...` expression, prefer an
 if...else ?  If it's multiline like that it probaby isn't adding to
 clarity.

  * The strncmp... should be a strcmp.  You're checking whether the value
 is exactly -, not whether it starts with -.

  * How about you replace the body of load_torrc_from_stdin with a call to
 `read_file_to_str_until_eof(STDIN_FILENO, (1u<<24), NULL)` ?

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Ticket URL: <https://trac.torproject.org/projects/tor/ticket/13865#comment:9>
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