When rejecting packages, make .changes files world readable (Closes: #156876)

Signed-off-by: NLuca Falavigna <dktrkranz@debian.org>

daklib/queue.py

@@ -2425,11 +2425,15 @@ distribution."""
 
         reason_filename = self.pkg.changes_file[:-8] + ".reason"
         reason_filename = os.path.join(cnf["Dir::Reject"], reason_filename)
+        changesfile = os.path.join(cnf["Dir::Reject"], self.pkg.changes_file)
 
         # Move all the files into the reject directory
         reject_files = self.pkg.files.keys() + [self.pkg.changes_file]
         self.force_reject(reject_files)
 
+        # Change permissions of the .changes file to be world readable
+        os.chmod(changesfile, os.stat(changesfile).st_mode | stat.S_IROTH)
+
         # If we fail here someone is probably trying to exploit the race
         # so let's just raise an exception ...
         if os.path.exists(reason_filename):