This extension to Phabricator looks up user names in the svn aliases file, in order to map them to phabricator users.

This can be useful if you've already moved users over to a new authentication backend, and want to maintain links between users on both svn and phabricator.

To install this library, simply clone this repository alongside your phabricator installation:

cd /path/to/install
git clone https://github.com/make-all/libphalias.git

Then simply add the path to this library to your phabricator configuration:

cd /path/to/install/phabricator
./bin/config set load-libraries '["libphalias"]'
./bin/config set events.listeners '["DiffusionLookupUserAlias"]'

This extension could also be used to read other alias files, as long as they have a similar format to the svn aliases file, which can be parsed by PHP's parse_ini_file($filename) function. It should also be quite simple to change the parser to handle other formats.