#!/bin/bash
# Begin $rc_base/init.d/functions - Run Level Control Functions

# Based on functions script from LFS-3.1 and earlier.
# Rewritten by Gerard Beekmans  - gerard@linuxfromscratch.org

# With code based on Matthias Benkmann's simpleinit-msb @
# http://winterdrache.de/linux/newboot/index.html

umask 022

export PATH="/bin:/usr/bin:/sbin:/usr/sbin"

KILLDELAY=3

COLUMNS=$(stty size)
COLUMNS=${COLUMNS##* }
COL=$[ $COLUMNS - 10 ]
WCOL=$[ $COLUMNS - 30 ]
WWCOL=$[ $COLUMNS - 40 ]
SET_COL="echo -en \\033[${COL}G"
SET_WCOL="echo -en \\033[${WCOL}G"
SET_WWCOL="echo -en \\033[${WWCOL}G"
CURS_UP="echo -en \\033[A"

NORMAL="echo -en \\033[0;39m"
SUCCESS="echo -en \\033[1;32m"
WARNING="echo -en \\033[1;33m"
FAILURE="echo -en \\033[1;31m"

COLRED="\033[1;6m\033[31m"
COLGREEN="\033[1;6m\033[32m"
COLYELLOW="\033[1;6m\033[33m"
COLBLUE="\033[1;6m\033[34m"
COLMAGENTA="\033[1;6m\033[35m"
COLWHITE="\033[1;6m\033[37m"
COLDEFAULT="\033[0m"

COLOREDSTAR="${COLBLUE}(${COLGREEN}*${COLBLUE})${COLDEFAULT} "

#location to save the started services
svcdir="/var/lib/init.d"
svclib="/lib/rcscripts"
svcmount="no"
svcfstype="tmpfs"
svcsize=1024


# dummy function; needed if splashutils are not installed
splash() {
	return 0
}


#source splash functions if exists
[ -f /etc/init.d/splash-functions ] && source /etc/init.d/splash-functions



print_error_msg()
{
	return 0
	echo
	$FAILURE
	echo -e "   An Error occurred."
	echo -e "   Script: ${COLWHITE}$i${COLRED}"
	echo -e "   Exitcode: ${COLWHITE}$error_value${COLRED}"
	echo
	$NORMAL
	echo
	echo "Press Enter to continue..."
	read
}

check_script_status()
{
	if [ ! -f $i ]
	then
		echo "$i is not a valid symlink"
		continue
	fi

	if [ ! -x $i ]
	then
		echo "$i is not executable, skipping"
		continue
	fi
}

update_svcstatus()
{
	#$1 script
	#$2 start/stop

	local SVCDIR_MOUNTED
	local SVCD_INITSCRIPT
	local x


	#do this only if proc is mounted
	[ ! -f /proc/mounts ] && return 0

	#check if svcdir is mounted
	SVCDIR_MOUNTED="$(cat /proc/mounts | grep ${svcdir} | cut -d ' ' -f2)"
	if [ "${SVCDIR_MOUNTED}" == "${svcdir}" ]
	then
		#check if statedir exists
		[ ! -d ${svcdir}/started ] && mkdir ${svcdir}/started
			
		#get real name of the initscript, not from the symlink
		if [ -L "$0" ]
		then
			x="$(readlink $0)"
			SVCD_INITSCRIPT="$(basename ${x})"
		else
			SVCD_INITSCRIPT="$(basename $0)"
		fi

		case $1 in
			start)
				#write to svcddir
				#write state
				echo ok > ${svcdir}/started/"${SVCD_INITSCRIPT}"
				;;
			stop)
				#echo "$(ls ${svcdir}/started)"
				if [ -f ${svcdir}/started/${SVCD_INITSCRIPT} ]
				then
					rm ${svcdir}/started/${SVCD_INITSCRIPT}
				fi
				;;
		esac
	fi
}

evaluate_retval()
{
	error_value=$?

	if [ $error_value = 0 ]
	then
		print_status success
	else
		print_status failure
	fi

	return $error_value
}

print_status()
{
	if [ $# = 0 ]
	then
		echo "Usage: $0 {success|warning|failure}"
		return 1
	fi

	$CURS_UP

	case "$1" in
		success)
			$SET_COL
			echo -e -n $COLBLUE"[  "
			$SUCCESS
			echo -e -n "OK"
			echo -e $COLBLUE"  ]"
			$NORMAL
			;;
		warning)
			case "$2" in
				running)
					$SET_WCOL
					echo "Already running"
					$CURS_UP
					;;
				not_running)
					$SET_WCOL
					echo "Not running"
					$CURS_UP
					;;
			esac
			$SET_COL
			echo -e -n $COLBLUE"[ "
			$WARNING
			echo -e -n "ATTN"
			echo -e $COLBLUE" ]"
			$NORMAL
			;;
		failure)
			$SET_COL
			echo -e -n $COLBLUE"["
			$FAILURE
			echo -e -n "FAILED"
			echo -e $COLBLUE"]"
			$NORMAL
			;;
	esac
}

getpids()
{
	base=${1##*/}
	pidlist=$(pidof -o $$ -o $PPID -x $base)
}

loadproc()
{
	if [ $# = 0 ]
	then
		echo "Usage: loadproc {program}"
		exit 1
	fi

	getpids $1

	if [ -z "$pidlist" ]
	then
		"$@"
		evaluate_retval
	else
		$SET_WCOL
		print_status warning running
	fi
}

killproc()
{
	if [ $# = 0 ]
	then
		echo "Usage: killproc {program} [signal]"
		exit 1
	fi

	if [ -z "$2" ]; then
		signal=TERM
		fallback=KILL
	else
		signal=${2##-}
		signal=${signal##SIG}
		fallback=""
	fi

	getpids $1

	if [ -n "$pidlist" ]; then
		failure=0

		for pid in $pidlist
		do
			kill -$signal $pid 2>/dev/null

			for ((i=0; $i<5000; i=$i+1)); do :; done

			for ((i=0; $i<$KILLDELAY; i=$i+1)); do
				kill -0 $pid 2>/dev/null || break
				sleep 1
			done

			if [ -n "$fallback" ]; then kill -$fallback $pid 2>/dev/null; fi

			kill -0 $pid 2>/dev/null && failure=1
		done

		base=${1##*/}
		if [ $failure = 0 ]; then rm -f /var/run/$base.pid; fi

		(exit $failure)
		evaluate_retval
	else
		$SET_WCOL
		print_status warning not_running
	fi
}

reloadproc()
{
	if [ $# = 0 ]
	then
		echo "Usage: reloadproc {program} [signal]"
		exit 1
	fi

	if [ -z "$2" ]; then
		signal=HUP
	else
		signal=${2##-}
		signal=${signal##SIG}

	fi

	getpids $1

	if [ -n "$pidlist" ]
	then
		failure=0

		for pid in $pidlist
		do
			kill -$signal $pid || failure=1
		done

		(exit $failure)
		evaluate_retval
	else
		$SET_WCOL
		print_status warning not_running
	fi
}

statusproc()
{
	if [ $# = 0 ]
	then
		echo "Usage: statusproc {program}"
		exit 1
	fi

	base=${1##*/}
	getpids $base

	if [ -n "$pidlist" ]
	then
		echo "$base is running with Process ID(s) $pidlist"
	else
		if [ -s /var/run/$base.pid ]
		then
			echo "$1 is not running but /var/run/$base.pid exists"
			return 1
		else
			echo "$1 is not running"
	 	fi
	fi
}

progressbar()
{
	if [ $# != 1 ]
	then
		echo "Usage: progressbar {progress}"
		exit 1
	fi

	if [ -f /proc/splash ]
	then
		echo "show $(( 65534 * $1 / 100 ))" > /proc/splash
	fi
}

kernel_major_version()
{
	local KV
	KV="$(uname -r|cut -d. -f1-2)"
	echo "${KV}"
}

dolisting() 
{
	local x=
	local y=
	local tmpstr=
	local mylist=
	local mypath="${*}"

	if [ "${mypath%/\*}" != "${mypath}" ]
	then
		mypath="${mypath%/\*}"
	fi

	for x in ${mypath}
	do
		[ ! -e "${x}" ] && continue

		if [ ! -d "${x}" ] && ( [ -L "${x}" -o -f "${x}" ] )
		then
			mylist="${mylist} $(ls "${x}" 2> /dev/null)"
		else
			[ "${x%/}" != "${x}" ] && x="${x%/}"

			cd "${x}"; tmpstr="$(ls)"

			for y in ${tmpstr}
			do
				mylist="${mylist} ${x}/${y}"
			done
		fi
	done

	echo "${mylist}"
}