#!/bin/bash
declare SSHD_PID="/var/run/sshd.pid"
declare SSHD_SERVICE="/etc/rc.d/rc.sshd"
# for debugging...
# SSHD_SERVICE="echo"
declare SSHD_RESTART="${SSHD_SERVICE} restart"
declare SSHD_STOP="${SSHD_SERVICE} stop"
declare SSHD_START="${SSHD_SERVICE} start"
declare CHECK_INTERVAL=15

sshd_check() {
  if [ -r ${SSHD_PID} ]; then
    if ps h -p `cat ${SSHD_PID}` &> /dev/null ; then
      return
    else
      ${SSHD_RESTART}   # restart needs sshd.pid to exist
    fi
  else
    ${SSHD_STOP}        # for paranoia in case a listening socket's hung
    ${SSHD_START}
  fi
  date +"%c %z: [sshd] Needed to restart."
}

while true; do
        sshd_check
        sleep ${CHECK_INTERVAL}
done