#!/bin/sh
### BEGIN INIT INFO
# Provides:          bitcoin-cpuminer
# Required-Start:    $network $local_fs
# Required-Stop:
# Default-Start:     2 3 4 5
# Default-Stop:      0 1 6
# Short-Description: Multi-threaded CPU miner for bitcoin
# Description:       A mining program that generates bitcoins.
### END INIT INFO

# Author: Matthias Urlichs <smurf@smurf.noris.de>

PATH=/sbin:/usr/sbin:/bin:/usr/bin
DESC="bitcoin miner"
NAME=bitcoin-cpuminer
DAEMON=/usr/sbin/minerd
DAEMON_ARGS=""
PIDFILE=/var/run/bitcoin/minerd.pid
SCRIPTNAME=/etc/init.d/bitcoin-cpuminer
USER=bitcoin-miner

THREADS=""
RETRIES="-1"

# Exit if the package is not installed
[ -x $DAEMON ] || exit 0

# 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 (>= 3.0-6) to ensure that this file is present.
. /lib/lsb/init-functions

#
# 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

	mkdir -p /var/run/bitcoin
	chgrp bitcoin /var/run/bitcoin
	chmod g+rwx /var/run/bitcoin

	if [ -z "$ALGORITHM" ] ; then
		ARCH=$(dpkg --print-architecture)
		if [ "$ARCH" = i386 ] ; then
			ALGORITHM=cryptopp_asm32
		elif [ "$ARCH" = amd64 ] ; then
			ALGORITHM=sse2_64
		fi
	fi
	if [ -n "$THREADS" ] ; then
		THREADS="--threads $THREADS"
	fi
	if [ -n "$ALGORITHM" ] ; then
		ALGORITHM="--algo $ALGORITHM"
	fi

	start-stop-daemon --start --quiet --pidfile $PIDFILE --exec $DAEMON --test > /dev/null \
		|| return 1
	start-stop-daemon --start --quiet --user $USER --exec $DAEMON -- \
		$THREADS --retries $RETRIES --daemon --syslog --pid-file $PIDFILE $ALGORITHM $DAEMON_ARGS \
		|| 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/30/KILL/5 --pidfile $PIDFILE --exec $DAEMON
	RETVAL="$?"
	[ "$RETVAL" = 2 ] && return 2
	
	rm -f $PIDFILE
	return "$RETVAL"
}

#
# Function that sends a SIGHUP to the daemon/service
#
do_reload() {
	start-stop-daemon --stop --signal 1 --quiet --pidfile $PIDFILE --name $NAME
	return 0
}

case "$1" in
  start)
    [ "$VERBOSE" != no ] && log_daemon_msg "Starting $DESC " "$NAME"
    do_start
    case "$?" in
		0|1) [ "$VERBOSE" != no ] && log_end_msg 0 ;;
		2) [ "$VERBOSE" != no ] && log_end_msg 1 ;;
	esac
  ;;
  stop)
	[ "$VERBOSE" != no ] && log_daemon_msg "Stopping $DESC" "$NAME"
	do_stop
	case "$?" in
		0|1) [ "$VERBOSE" != no ] && log_end_msg 0 ;;
		2) [ "$VERBOSE" != no ] && log_end_msg 1 ;;
	esac
	;;
  status)
       status_of_proc "$DAEMON" "$NAME" && exit 0 || exit $?
       ;;
  #reload|force-reload)
	#
	# If do_reload() is not implemented then leave this commented out
	# and leave 'force-reload' as an alias for 'restart'.
	#
	#log_daemon_msg "Reloading $DESC" "$NAME"
	#do_reload
	#log_end_msg $?
	#;;
  restart|force-reload)
	#
	# If the "reload" option is implemented then remove the
	# 'force-reload' alias
	#
	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|restart|reload|force-reload}" >&2
	echo "Usage: $SCRIPTNAME {start|stop|status|restart|force-reload}" >&2
	exit 3
	;;
esac

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