[tor-bugs] #15015 [Core Tor/Tor]: tor --verify-config should not bind to ports

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#15015: tor --verify-config should not bind to ports
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 Reporter:  cypherpunks                          |          Owner:
     Type:  defect                               |         Status:
                                                 |  assigned
 Priority:  Medium                               |      Milestone:  Tor:
                                                 |  0.3.???
Component:  Core Tor/Tor                         |        Version:
 Severity:  Normal                               |     Resolution:
 Keywords:  tor-relay, 027-triaged-1-out, intro  |  Actual Points:
Parent ID:                                       |         Points:  small
 Reviewer:                                       |        Sponsor:
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Comment (by teor):

 Hmm, there are two different use cases here:
 1) I am not running a relay, and I'm about to start one, and I want to
 know if it will work,
 2) I am running a relay, and I'm about to change the config, and I want to
 know if it will work

 We can bind to ports in case 1), but not case 2).

 I think we should add a new option `--parse-config` that just does an
 options_verify().
 Of course, the risk is that it will succeed, and then when it gets to
 options_act(), it will fail because it suddenly finds out it can't do what
 it wanted to do.

 But for `--verify-config`, the risk is that it will fail unnecessarily,
 because it could do the things if only it were the existing tor process.

--
Ticket URL: <https://trac.torproject.org/projects/tor/ticket/15015#comment:13>
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