#!/bin/sh
#
# /etc/rc.d/rc.psd
#
# Start/stop profile-sync-daemon.
#
# This script enables and disables profile-sync-daemon for selected users.
# You can either define users in the $USERS array,
#   or have this script scan for them and save them in $USERS_CACHE.

USERS=""
USERS_CACHE="/run/psd-users.cache"
if [ -f /etc/default/psd ]; then
  . /etc/default/psd
fi

scan_users() {
  rm -f "$USERS_CACHE"

  for user in $(getent passwd | cut -d: -f1); do
    group="$(getent passwd $user | cut -d: -f4)"
    home="$(getent passwd $user | cut -d: -f6)"
    shell="$(getent passwd $user | cut -d: -f7)"
    if [ "$group" != "0" -a "$home" -a "$home" != "/" -a "$(fgrep -x "$shell" /etc/shells)" ]; then
      config="$(su - $user -c 'echo $XDG_CONFIG_HOME')"
      [ ! "$config" ] && config="$home/.config"
      if [ -f "$config/psd/psd.conf" ]; then
        echo "$user" >> "$USERS_CACHE"
      fi
    fi
  done
}

get_users() {
  # If $USERS is empty, try to create it based on what users have an existing $XDG_CONFIG_HOME/psd/psd.conf
  if [ ! "$USERS" ]; then
    if [ ! -f "$USERS_CACHE" ]; then
      scan_users
    fi
    cat "$USERS_CACHE"
  else
    echo "$USERS"
  fi
}

start_psd() {
  if [ -x /usr/bin/psd ]; then
    echo "Starting/Resyncing Profile-sync-daemon..."
    for user in $(get_users); do
      su - $user -c 'psd resync' > /dev/null
    done &
  fi
}

stop_psd() {
  if [ -x /usr/bin/psd ]; then
    echo "Stoppping Profile-sync-daemon..."
    for user in $(get_users); do
      su - $user -c 'psd unsync' > /dev/null
    done
  fi
}

case "$1" in
'start')
  start_psd
  ;;
'stop')
  stop_psd
  ;;
'scan_users')
  scan_users
  ;;
*)
  echo "Usage: $0 start|stop|scan_users"
esac