Make lipsync able to handle multiple users

[philcryer]

goozbach asked:

2. What are the design ideas/goals for making lipsync able to handle
   multiple users?

I replied:
I haven't had any, and yes, having it in ~/$HOME/.lipsync/ is where I
want it to be, then when /etc/init.d/lipsyncd is called, it does a
loop through all /home/*/ dirs, and if it finds the ~/$HOME/.lipsync/
it'll know to kick it off for that user. This is how the commandline
dropbox app works btw, but they use a var in the init.d script to
identify the users - something I'd like to get away from:

#DROPBOX_USERS="user1 user2"
DROPBOX_USERS="phil"

DAEMON=.dropbox/dropbox

start() {
   echo "Starting dropbox..."
   for dbuser in $DROPBOX_USERS; do
       HOMEDIR=`getent passwd $dbuser | cut -d: -f6`
       if [ -x $HOMEDIR/$DAEMON ]; then
           HOME="$HOMEDIR" start-stop-daemon -b -o -c $dbuser -S -u
$dbuser -x $HOMEDIR/$DAEMON
       fi
   done