Code review comment for lp:~mvo/aptdaemon/admin-group-fix

As discussed on irc the better solution is probably to use the /etc/apt/auth.conf file for the username/passwords.

The file has the form:

machine private-ppa.launchpad.net/path
login username
password token

Alternatively it can be tab seperated, its using strtok_r(.."\n\t"..)