sslh/scripts/etc-init.d-sslh-debian-modified.sslh

#! /bin/sh
### BEGIN INIT INFO
# Provides:          sslh
# Required-Start:    $remote_fs $syslog $network
# Required-Stop:     $remote_fs $syslog $network
# Default-Start:     2 3 4 5
# Default-Stop:      0 1 6
# Short-Description: ssl/ssh multiplexer
# Description:       sslh lets one accept both HTTPS and SSH connections on the
#                    same port. It makes it possible to connect to an SSH server
#                    on port 443 (e.g. from inside a corporate firewall) while
#                    still serving HTTPS on that port.
### END INIT INFO

# Original Author: Guillaume Delacour <gui@iroqwa.org>
# modified and optimized for current sslh-fork 

# Do NOT "set -e"

# PATH should only include /usr/* if it runs after the mountnfs.sh script
PATH=/sbin:/usr/sbin:/bin:/usr/bin
DESC="ssl/ssh multiplexer"
NAME=sslh
DAEMON=/usr/sbin/$NAME
DAEMON_OPTS=""
PIDFILE=/var/run/sslh/$NAME.pid
SCRIPTNAME=/etc/init.d/$NAME
RUN=yes


# If you want to use a configuration file, put -F/path/to/sslh.cfg
# into /etc/default/sslh DAEMON_OPTS
# Read configuration variable file if it is present
[ -r /etc/default/$NAME ] && . /etc/default/$NAME



# Load the VERBOSE setting and other rcS variables
. /lib/init/vars.sh

# Define LSB log_* functions.
# Depend on lsb-base (>= 3.2-14) to ensure that this file is present
# and status_of_proc is working.
. /lib/lsb/init-functions

# Exit if the package is not installed
if [ -x "$DAEMON" ] 
then
  echo "Can not start \"$DAEMON\", path not available"
  log_failure_msg "Can not start \"$DAEMON\", path not available"
fi


#
# Function that starts the daemon/service
#
do_start()
{
        # Return
        #   0 if daemon has been started
        #   1 if daemon was already running
        #   2 if daemon could not be started
    
  # Use this if you want the user to explicitly set 'RUN' in
  # /etc/default/
  if [ "$RUN" != "yes" ]
  then
      echo "$NAME disabled, please adjust the configuration to your needs "
      log_failure_msg "and then set RUN to 'yes' in /etc/default/$NAME to enable it."
      return 2
  fi
    
        # sslh write the pid as sslh user
        if [ ! -d /var/run/sslh/ ]
        then
                mkdir -p /var/run/sslh
                chown sslh:sslh /var/run/sslh
        fi

        start-stop-daemon --start --quiet --pidfile $PIDFILE --exec $DAEMON --test > /dev/null \
                || return 1
        start-stop-daemon --start --quiet --pidfile $PIDFILE --exec $DAEMON -- \
                $DAEMON_OPTS \
                || return 2
        # Add code here, if necessary, that waits for the process to be ready
        # to handle requests from services started subsequently which depend
        # on this one.  As a last resort, sleep for some time.
}

#
# Function that stops the daemon/service
#
do_stop()
{
        # Return
        #   0 if daemon has been stopped
        #   1 if daemon was already stopped
        #   2 if daemon could not be stopped
        #   other if a failure occurred
        start-stop-daemon --stop --quiet --retry=TERM/45/KILL/5 --pidfile $PIDFILE --name $NAME
        RETVAL="$?"
        [ "$RETVAL" = 2 ] && return 2
  # As long, as the started sslh is sslh-fork, don't kill the still existing 
  # connections. You may need the following construct for sslh-ev and sslh-select,
  # as sslh has currently no function reloading its configuration.

  # Wait for children to finish too if this is a daemon that forks
        # and if the daemon is only ever run from this initscript.
        # If the above conditions are not satisfied then add some other code
        # that waits for the process to drop all resources that could be
        # needed by services started subsequently.  A last resort is to
        # sleep for some time.
        #start-stop-daemon --stop --quiet --oknodo --retry=0/30/KILL/5 --exec $DAEMON
        #[ "$?" = 2 ] && return 2
        # Many daemons don't delete their pidfiles when they exit.
        rm -f $PIDFILE
        return "$RETVAL"
}

#
# Function that sends a SIGHUP to the daemon/service
# don't activate this, as this kills only the leading process
# of sslh-fork, and the spawned worker stays connected listening.
# After that, the Owner of the PID from PIDFILE is gone, the
# listening connection is still blocked
# sslh can't reload its configuration as of Aug 2024
#do_reload() {
        #
        # If the daemon can reload its configuration without
        # restarting (for example, when it is sent a SIGHUP),
        # then implement that here.
        #
#       start-stop-daemon --stop --signal 1 --quiet --pidfile $PIDFILE --name $NAME
#       return 0
#}

case "$1" in
  start)
        # check if sslh is launched via inetd
        if [ -f /etc/inetd.conf ] && [ $(egrep -q "^https.*/usr/sbin/sslh" /etc/inetd.conf|wc -l) -ne 0 ]
        then
                echo "sslh is started from inetd."
                exit 1
        fi

        log_daemon_msg "Starting $DESC" "$NAME"
        do_start
        case "$?" in
                0|1) log_end_msg 0 ;;
                2) log_end_msg 1 ;;
        esac
        ;;
  stop)
        log_daemon_msg "Stopping $DESC" "$NAME"
        do_stop
        case "$?" in
                0|1) log_end_msg 0 ;;
                2) log_end_msg 1 ;;
        esac
        ;;
  status)
       status_of_proc "$DAEMON" "$NAME" && exit 0 || exit $?
       ;;
  restart|force-reload)
        log_daemon_msg "Restarting $DESC" "$NAME"
        do_stop
        case "$?" in
          0|1)
                do_start
                case "$?" in
                        0) log_end_msg 0 ;;
                        1) log_end_msg 1 ;; # Old process is still running
                        *) log_end_msg 1 ;; # Failed to start
                esac
                ;;
          *)
                # Failed to stop
                log_end_msg 1
                ;;
        esac
        ;;
  *)
        echo "Usage: $SCRIPTNAME {start|stop|status|restart}" >&2
        exit 3
        ;;
esac