#!/bin/sh

set -e

case $1 in
  preinst)
    exit 0
    ;;
  postinst)
    if ! getent group sshd 2>&1 > /dev/null; then
      if groupadd -g 50 sshd; then
        echo 'Created group sshd'
      else
        echo 'Failed to create group sshd!'
        exit 1
      fi
    fi
    if ! getent passwd sshd 2>&1 > /dev/null; then
      if useradd -c 'sshd PrivSep' -d /var/run/sshd -g sshd \
      -s /bin/false -u 50 sshd; then
        echo 'Created user sshd'
      else
        echo 'Failed to create user sshd!'
        exit 1
      fi
    fi

    if [ ! -f /etc/ssh/ssh_host_rsa_key ]; then
      ssh-keygen -A
    fi

    if [ ! -f /etc/ssh/sshd_config ]; then
      cp /usr/share/openssh/sshd_config /etc/ssh
    fi
    ;;
  prerm)
    exit 0
    ;;
  postrm)
    exit 0
    ;;
esac