#! /bin/sh

### BEGIN INIT INFO
# Provides: sshd
# Required-Start: $remote_fs $syslog
# Required-Stop: $remote_fs $syslog
# Default-Start: 2 3 4 5
# Default-Stop:
# Short-Description: OpenBSD Secure Shell server
### END INIT INFO

set -e

# /etc/init.d/ssh: start and stop the OpenBSD "secure shell(tm)" daemon

test -x /usr/sbin/sshd || exit 0
( /usr/sbin/sshd -\? 2>&1 | grep -q OpenSSH ) 2>/dev/null || exit 0

umask 022

if test -f /etc/default/ssh; then
. /etc/default/ssh
fi

. /lib/lsb/init-functions

if [ -n "$2" ]; then
SSHD_OPTS="$SSHD_OPTS $2"
fi

# Are we running from init?
run_by_init() {
([ "$previous" ] && [ "$runlevel" ]) || [ "$runlevel" = S ]
}

check_for_upstart() {
if init_is_upstart; then
exit $1
fi
}

check_for_no_start() {
# forget it if we're trying to start, and /etc/ssh/sshd_not_to_be_run exists
if [ -e /etc/ssh/sshd_not_to_be_run ]; then
if [ "$1" = log_end_msg ]; then
log_end_msg 0 || true
fi
if ! run_by_init; then
log_action_msg "OpenBSD Secure Shell server not in use (/etc/ssh/sshd_not_to_be_run)" || true
fi
exit 0
fi
}

check_dev_null() {
if [ ! -c /dev/null ]; then
if [ "$1" = log_end_msg ]; then
log_end_msg 1 || true
fi
if ! run_by_init; then
log_action_msg "/dev/null is not a character device!" || true
fi
exit 1
fi
}

check_privsep_dir() {
# Create the PrivSep empty dir if necessary
if [ ! -d /var/run/sshd ]; then
mkdir /var/run/sshd
chmod 0755 /var/run/sshd
fi
}

check_config() {
if [ ! -e /etc/ssh/sshd_not_to_be_run ]; then
/usr/sbin/sshd $SSHD_OPTS -t || exit 1
fi
}

export PATH="${PATH:+$PATH:}/usr/sbin:/sbin"

case "$1" in
start)
check_for_upstart 1
check_privsep_dir
check_for_no_start
check_dev_null
log_daemon_msg "Starting OpenBSD Secure Shell server" "sshd" || true
if start-stop-daemon --start --quiet --oknodo --pidfile /var/run/sshd.pid --exec /usr/sbin/sshd -- $SSHD_OPTS; then
log_end_msg 0 || true
else
log_end_msg 1 || true
fi
;;
stop)
check_for_upstart 0
log_daemon_msg "Stopping OpenBSD Secure Shell server" "sshd" || true
if start-stop-daemon --stop --quiet --oknodo --pidfile /var/run/sshd.pid; then
log_end_msg 0 || true
else
log_end_msg 1 || true
fi
;;

reload|force-reload)
check_for_upstart 1
check_for_no_start
check_config
log_daemon_msg "Reloading OpenBSD Secure Shell server's configuration" "sshd" || true
if start-stop-daemon --stop --signal 1 --quiet --oknodo --pidfile /var/run/sshd.pid --exec /usr/sbin/sshd; then
log_end_msg 0 || true
else
log_end_msg 1 || true
fi
;;

restart)
check_for_upstart 1
check_privsep_dir
check_config
log_daemon_msg "Restarting OpenBSD Secure Shell server" "sshd" || true
start-stop-daemon --stop --quiet --oknodo --retry 30 --pidfile /var/run/sshd.pid
check_for_no_start log_end_msg
check_dev_null log_end_msg
if start-stop-daemon --start --quiet --oknodo --pidfile /var/run/sshd.pid --exec /usr/sbin/sshd -- $SSHD_OPTS; then
log_end_msg 0 || true
else
log_end_msg 1 || true
fi
;;

try-restart)
check_for_upstart 1
check_privsep_dir
check_config
log_daemon_msg "Restarting OpenBSD Secure Shell server" "sshd" || true
RET=0
start-stop-daemon --stop --quiet --retry 30 --pidfile /var/run/sshd.pid || RET="$?"
case $RET in
0)
# old daemon stopped
check_for_no_start log_end_msg
check_dev_null log_end_msg
if start-stop-daemon --start --quiet --oknodo --pidfile /var/run/sshd.pid --exec /usr/sbin/sshd -- $SSHD_OPTS; then
log_end_msg 0 || true
else
log_end_msg 1 || true
fi
;;
1)
# daemon not running
log_progress_msg "(not running)" || true
log_end_msg 0 || true
;;
*)
# failed to stop
log_progress_msg "(failed to stop)" || true
log_end_msg 1 || true
;;
esac
;;

status)
check_for_upstart 1
status_of_proc -p /var/run/sshd.pid /usr/sbin/sshd sshd && exit 0 || exit $?
;;

*)
log_action_msg "Usage: /etc/init.d/ssh {start|stop|reload|force-reload|restart|try-restart|status}" || true
exit 1
esac

exit 0