file: Allow lookup() of any file URI

Fixes #1268

docs/changelog.rst

@@ -63,6 +63,16 @@ Bug fix release.
   clients, which no longer scan the files twice. (Fixes: :issue:`1260`, PR:
   :issue:`1261`)
 
+- File: Allow looking up metadata about any ``file://`` URI, just like we did
+  in Mopidy 1.0.x, where Mopidy-Stream handled ``file://`` URIs. In Mopidy
+  1.1.0, Mopidy-File did not allow one to lookup files outside the directories
+  listed in :confval:`file/media_dir`. This broke Mopidy-Local-SQLite when the
+  :confval:`local/media_dir` directory was not within one of the
+  :confval:`file/media_dirs` directories. For browsing of files, we still limit
+  access to files inside the :confval:`file/media_dir` directories. For lookup,
+  you can now read metadata for any file you know the path of. (Fixes:
+  :issue:`1268`, PR: :issue:`1273`)
+
 - Audio: Fix timeout handling in scanner. This regression caused timeouts to
   expire before it should, causing scans to fail.
 

mopidy/file/library.py

@@ -81,10 +81,6 @@ class FileLibraryProvider(backend.LibraryProvider):
         logger.debug('Looking up file URI: %s', uri)
         local_path = path.uri_to_path(uri)
 
-        if not self._is_in_basedir(local_path):
-            logger.warning('Ignoring URI outside base dir: %s', local_path)
-            return []
-
         try:
             result = self._scanner.scan(uri)
             track = utils.convert_tags_to_track(result.tags).copy(