#!/bin/bash
#--------------------------------------------------------------------------
# Copy the home dir of a user to a temporary location and copy the user 
# template to the user's home dir. This provides a consistent interface 
# for each user.
#
# Run as a login/logout hook via:
# sudo defaults write com.apple.loginwindow Log[in|out]Hook /path/to/script
#
# Note that $1 is set to the current user when run as a hook.
#
# Pete Morris 05.Aug.2008
#--------------------------------------------------------------------------

# Set the following vars to reflect your system.
managed_users=('student')                   # array of users to manage
group='staff'                               # group of managed users.
template_base='/Library/Management'         # location of user templates.
tmpdir='/Volumes/StudentData/archives'      # where to store old home dirs.

# Check usage.
if [[ $# < 1 ]]; then
    echo "No user specified!"
    exit 1
fi

# Do we need to manage the user logging in/out?
user="$1"
if echo ${managed_users[@]} | grep -q $user; then
    # create the tempdir if needed.
    [ -d "${tmpdir}" ] || mkdir "${tmpdir}"

    # Create a timestamp for old home dir storage.
    timestamp=$(date "+%Y%m%d-%H.%M.%S")

    # Move the old home dir.
    mkdir -m 755 "${tmpdir}/prevuser.${timestamp}"
    mv "/Users/${user}" "${tmpdir}/prevuser.${timestamp}"

    # Copy home dir template into place.
    /usr/bin/ditto -rsrcFork "${template_base}/${user}" "/Users/${user}"

    # Fix ownership of the new home dir.
    /usr/sbin/chown -R "${user}:${group}" "/Users/${user}"
fi