### -*-conf-*-
###
### Upstart control script for tripe.

###--------------------------------------------------------------------------
### Identification.

description "TrIPE virtual private network server"
author "Mark Wooding <mdw@distorted.org.uk>"

###--------------------------------------------------------------------------
### Trigger conditions.

start on stopped pymaemo-optify
stop on starting shutdown

respawn

###--------------------------------------------------------------------------
### Process environment.

console none

###--------------------------------------------------------------------------
### Pre-flight check.

pre-start script

	[ -f @initconfig@ ] && . @initconfig@

	: ${prefix=@prefix@} ${exec_prefix=@exec_prefix@}
	: ${bindir=@bindir@} ${sbindir=@sbindir@}
	: ${TRIPEDIR=@configdir@} ${TRIPESOCK=@socketdir@/tripesock}
	: ${pidfile=@pidfile@}
	: ${tripe=$sbindir/tripe} ${tripectl=$bindir/tripectl}

	PATH=/usr/bin:/usr/sbin:/bin:/sbin:$bindir
	export PATH TRIPEDIR TRIPESOCK TRIPE_SLIPIF

	## Give up if there's no binary.
	if test ! -x "$tripe" || test ! -x "$tripectl"; then
	  echo >&2 "Not starting/stopping TrIPE: binary files missing"
	  exit 1
	fi

	## Give up if there's no key.
	if test ! -f "$TRIPEDIR/keyring" ||
	   test ! -f "$TRIPEDIR/keyring.pub"; then
	  echo >&2 "Not starting/stopping TrIPE: keyring files missing"
	  exit 1
	fi

	## Check it will work, or at least stands a fighting chance.
	##
	## (Having loads of different tunnel types doesn't help any.)
	case ${tunnel-`$tripe --tunnels | head -1`},`uname -s` in

	  ## Linux TUN/TAP.
	  linux,Linux)
	    if { test -f /proc/misc && grep -q tun /proc/misc; } ||
	       modprobe -q tun; then
	      : good
	    else
	      echo >&2 "$tripe needs the Linux TUN/TAP driver to run."
	      exit 1
	    fi
	    if test -c /dev/net/tun; then
	      : good
	    else
	      echo >&2 "$tripe needs /dev/net/tun, which is missing."
	      exit 1
	    fi
	    ;;

	  ## Linux Unet (obsolete).
	  unet,Linux)
	    if { test -f /proc/devices && grep -q unet /proc/devices; } ||
	       modprobe -q unet; then
	      : good
	    else
	      echo >&2 "$tripe needs the Linux UNET driver to run."
	      exit 1
	    fi
	    if test -c /dev/unet; then
	      : good
	    else
	      echo >&2 "$tripe needs /dev/unet, which is missing."
	      exit 1
	    fi
	    ;;

	  ## BSD tun.
	  bsd,*BSD)
	    ## Don't know how to check the device is working.  Check the
	    ## device file exists and hope for the best.
	    if test -c /dev/tun0; then
	      : good
	    else
	      echo >&2 "$tripe needs /dev/tun0, which is missing."
	      exit 1
	    fi
	    ;;

	  ## SLIP.
	  slip,*)
	    if test "$TRIPE_SLIPIF" = ""; then
	      echo >&2 "$tripe needs SLIP interfaces set up!"
	      exit 1
	    fi
	    ;;

	  ## Various kinds of misconfiguration.
	  linux,* | unet,*)
	    echo >&2 "CONFIGURATION ERROR"
	    echo >&2 "  $tripe is compiled to use a Linux tunnel device, but"
	    echo >&2 "  this system is `uname -s`"
	    exit 1
	    ;;
	  bsd,*)
	    echo >&2 "CONFIGURATION ERROR"
	    echo >&2 "  $tripe is compiled to use a BSD tunnel device, but"
	    echo >&2 "  this system is `uname -s`"
	    exit 1
	    ;;
	esac

end script

###--------------------------------------------------------------------------
### Main startup.

script

	[ -f @initconfig@ ] && . @initconfig@

	: ${prefix=@prefix@} ${exec_prefix=@exec_prefix@}
	: ${bindir=@bindir@} ${sbindir=@sbindir@}
	: ${TRIPEDIR=@configdir@} ${TRIPESOCK=@socketdir@/tripesock}
	: ${pidfile=@pidfile@}
	: ${tripe=$sbindir/tripe} ${tripectl=$bindir/tripectl}

	PATH=/usr/bin:/usr/sbin:/bin:/sbin:$bindir
	export PATH TRIPEDIR TRIPESOCK TRIPE_SLIPIF

	## Start the server, passing lots of arguments.
	logopt=
	case ${syslogp-nil} in nil) ;; *) logopt="$logopt -l" ;; esac
	case ${logfile+t},${syslogp-nil} in
	  t,*) logopt="$logopt -f$logfile" ;;
	  ,nil) logopt="$logopt -f@logfile@" ;;
	esac
	$tripectl -s -p$tripe \
	  -P$pidfile \
	  $logopt \
	  ${keytag+-S-t$keytag} \
	  ${addr+-S-b$addr} ${port+-S-p$port} \
	  ${user+-U$user} ${group+-G$group} \
	  ${sockmode+-S-m$sockmode} \
	  ${trace+-S-T$trace} \
	  ${tunnel+-S-n$tunnel} \
	  $miscopts

end script

post-start script

	[ -f @initconfig@ ] && . @initconfig@

	: ${prefix=@prefix@} ${exec_prefix=@exec_prefix@}
	: ${bindir=@bindir@} ${sbindir=@sbindir@}
	: ${TRIPEDIR=@configdir@} ${TRIPESOCK=@socketdir@/tripesock}
	: ${pidfile=@pidfile@}
	: ${tripe=$sbindir/tripe} ${tripectl=$bindir/tripectl}

	PATH=/usr/bin:/usr/sbin:/bin:/sbin:$bindir
	export PATH TRIPEDIR TRIPESOCK TRIPE_SLIPIF

	## Wait for the server to start up.  This doesn't usually take long.
	for i in 1 2 3 4 give-up; do
	  $tripectl help >/dev/null 2>/dev/null && break
	  sleep 1
	done

	if [ $i = give-up ]; then
	  echo >&2 "Tripe server wouldn't start"
	  exit 1
	fi

	## Start up the ancillary services.
	[ -d $TRIPEDIR/services ] && for i in $TRIPEDIR/services/*; do
	  [ -x $i ] || continue
	  name=`basename $i`
	  case $name in *~|\#*) continue;; esac
	  $i --daemon --startup || :
	done

	## Start up the statically configured peers.
	[ -d $TRIPEDIR/peers ] && for i in $TRIPEDIR/peers/*; do
	  [ -x $i ] || continue
	  name=`basename $i`
	  case $name in *~|\#*) continue;; esac
	  $i || :
	done

end script

###--------------------------------------------------------------------------
### Shutdown.

pre-stop script

	[ -f /etc/default/tripe ] && . /etc/default/tripe

	: ${prefix=/usr} ${exec_prefix=/usr}
	: ${bindir=/usr/bin} ${sbindir=/usr/sbin}
	: ${TRIPEDIR=/etc/tripe} ${TRIPESOCK=/var/run/tripesock}
	: ${pidfile=/var/run/tripectl.pid}
	: ${tripe=$sbindir/tripe} ${tripectl=$bindir/tripectl}

	PATH=/usr/bin:/usr/sbin:/bin:/sbin:$bindir
	export PATH TRIPEDIR TRIPESOCK TRIPE_SLIPIF

	## If there's no socket, it must have quit (probably nonviolently).
	if test ! -S $TRIPESOCK; then
	  :

	## Ask it to die nicely.
	elif $tripectl quit >/dev/null 2>&1; then
	  :

	## If there's no pidfile then tripectl presumably deleted it.
	elif test ! -f $pidfile; then
	  rm -f $TRIPESOCK

	## Otherwise kill the process unpleasantly.
	elif kill `cat $pidfile`; then
	  :
	else
	  exit 1
	fi

end script

###------ That's all, folks -------------------------------------------------