[tor-bugs] #25140 [Core Tor/Tor]: Parse only .torrc files in torrc.d directory

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#25140: Parse only .torrc files in torrc.d directory
-------------------------------------------------+-------------------------
 Reporter:  iry                                  |          Owner:
                                                 |  Jigsaw52
     Type:  task                                 |         Status:
                                                 |  needs_revision
 Priority:  High                                 |      Milestone:  Tor:
                                                 |  0.4.2.x-final
Component:  Core Tor/Tor                         |        Version:  Tor:
                                                 |  0.3.3.1-alpha
 Severity:  Major                                |     Resolution:
 Keywords:  034-triage-20180328,                 |  Actual Points:
  035-removed-20180711                           |
Parent ID:                                       |         Points:
 Reviewer:  ahf                                  |        Sponsor:
-------------------------------------------------+-------------------------
Changes (by ahf):

 * status:  needs_review => needs_revision


Comment:

 Hey!

 My apologies for the delay with this one. I still have no idea why Trac
 ate my comment after our meeting. The comment I wrote back then is the
 following according to my notes:

 We are concerned right now about the complexity of these patches,
 particularly around the `glob()` implementation, but also the size of the
 changes to the `conffile.c` file.

 Nick and I discussed the patches and came up with the following rather
 radical suggestions to make the code simpler:

 - Switch to use `fnmatch()` on the platforms where that function is
 available.

   This would allow you to implement more or less the same functionality in
 a simpler way using `fnmatch()` and `listdir()` while simplifying the code
 rather a lot and reducing the overall size of the patches.

 - For platforms that DOES NOT support `fnmatch()`, we bundle an
 implementation from another project (with a similar license as Tor) in the
 `src/ext/'. This could for example be this one from Git (which they took
 from the OpenBSD project):
 https://github.com/libgit2/libgit2/blob/master/src/fnmatch.c

   You can see how we do this with other functions by looking at the other
 code imports found in the `src/ext` directory tree.

 This would make the code more edible for us and overall much less complex
 than before. `fnmatch()` and `listdir()` would not support the same amount
 of features as a real `glob()` implementation would, but do we really need
 those features?

--
Ticket URL: <https://trac.torproject.org/projects/tor/ticket/25140#comment:47>
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