create_service.in

#!/bin/sh
#
# $Id: create_service.in,v 1.29 2023-06-30 10:16:44+05:30 Cprogrammer Exp mbhangui $
#

check_update_if_diff()
{
	val=`cat $1 2>/dev/null`
	if [ ! " $val" = " $2" ] ; then
		echo $2 > $1
	fi
}

add_service()
{
	if [ $# -ne 1 ] ; then
		echo "USAGE: create_service --servicedir=path --user=username \\"
		echo "  --lcdhost=host --lcdport=port || --lcdfifo=fifo \\"
		echo "  --add-service" 1>&2
		return 1
	fi
	userid=$1
	case "$SYSTEM" in
		Linux)
		user=$(getent passwd $userid 2>/dev/null| cut -d: -f1)
		if [ $? -ne 0 ] ; then
			if [ $? -eq 2 ] ; then
				echo "No such userid $userid" 1>&2
				return 1
			fi
			return 1
		fi
		;;
		Darwin)
		user=$(dscl . -list /Users UniqueID|grep -w $userid|awk '{print $1}')
		if [ -z "$user" ] ; then
			echo "No such userid $userid" 1>&2
			return 1
		fi
		;;
		*)
		echo "Configure/setup startup manually" 1>&2
		exit 1
		;;
	esac
	if [ -z "$servicedir" ] ; then
		echo "--servicedir not specified" 1>&2
		exit 1
	fi
	if [ ! -d $logdir ] ; then
		mkdir -p $logdir
		chown qmaill:nofiles $logdir
	fi
	mkdir -p $servicedir/$service_name/log
	mkdir -p $servicedir/$service_name/variables
	echo "$prog_args"  > $servicedir/$service_name/variables/.options
	if [ ! -f $servicedir/$service_name/variables/NO_DB_UPDATE ] ; then
	                   > $servicedir/$service_name/variables/NO_DB_UPDATE
	fi
	check_update_if_diff $servicedir/$service_name/variables/AUTO_RATING  0
	check_update_if_diff $servicedir/$service_name/variables/MPD_HOST     127.0.0.1
	check_update_if_diff $servicedir/$service_name/variables/MPD_PORT     6600
	if [ -n "$lcdfifo" ] ; then
		> $servicedir/$service_name/variables/LCD_HOST
		> $servicedir/$service_name/variables/LCD_PORT
		check_update_if_diff $servicedir/$service_name/variables/LCD_FIFO     $lcdfifo
	elif [ -n "$lcdhost" -a -n "$lcdport" ] ; then
		> $servicedir/$service_name/variables/LCD_FIFO
		check_update_if_diff $servicedir/$service_name/variables/LCD_HOST     $lcdhost
		check_update_if_diff $servicedir/$service_name/variables/LCD_PORT     $lcdport
	else
		> $servicedir/$service_name/variables/LCD_FIFO
		> $servicedir/$service_name/variables/LCD_HOST
		> $servicedir/$service_name/variables/LCD_PORT
	fi
	check_update_if_diff $servicedir/$service_name/variables/MPDEV_TMPDIR "/tmp/mpdev"
	sock=$(grep "^bind_to_address" @sysconfdir@/mpd.conf | grep sock|awk '{print $2}'|sed 's{"{{g')
	if [ -n "$sock" ] ; then
		check_update_if_diff $servicedir/$service_name/variables/MPD_SOCKET $sock
	elif [ -S /run/mpd/mpd.sock ] ; then
		check_update_if_diff $servicedir/$service_name/variables/MPD_SOCKET "/run/mpd/mpd.sock"
	fi
	case "$SYSTEM" in
		Linux)
		home=$(getent passwd $user|cut -d: -f6)
		;;
		Darwin)
		home=$(dscl . -list /Users NFSHomeDirectory|grep $user|awk '{print $2}')
		;;
	esac
	if [ -n "$home" ] ; then
		check_update_if_diff $servicedir/$service_name/variables/PATH "/bin:/usr/bin:@prefix@/bin:$home/.mpdev:/usr/local/bin:/opt/local/bin"
		check_update_if_diff $servicedir/$service_name/variables/HOME "$home"
		if [ "$SYSTEM" = "Linux" ] ; then
		check_update_if_diff $servicedir/$service_name/variables/XDG_RUNTIME_DIR "$home"
		fi
	fi
	mkdir -p $home/.mpdev
	for i in player playpause output mixer lcd_display
	do
		if [ ! -f $home/.mpdev/$i ] ; then
			cp @mpdevlibexecdir@/$i $home/.mpdev
		elif [ ! -f $home/.mpdev/."$i".nooverwrite ] ; then
			cp @mpdevlibexecdir@/$i $home/.mpdev
		fi
	done
	case "$SYSTEM" in
		Linux)
		t_uid=$(getent passwd $user|cut -d: -f3)
		t_gid=$(getent passwd $user|cut -d: -f4)
		;;
		Darwin)
		t_uid=$(dscl . -read /Users/$user UniqueID|cut -d: -f2|sed 's{ {{g')
		t_gid=$(dscl . -read /Users/$user PrimaryGroupID|cut -d: -f2|sed 's{ {{g')
		;;
	esac
	chown -R $t_uid:$t_gid $home/.mpdev
	
	(
	echo "#!/bin/sh"
	echo "# generated log script for $host on `date`"
	echo "# by the below command"
	echo "# $prog_args"
	echo "exec @prefix@/bin/setuidgid qmaill \\"
	if [ -f @prefix@/sbin/multilog ] ; then
		echo "@prefix@/sbin/multilog t $logdir/$service_name"
	else
		echo "@prefix@/bin/multilog t $logdir/$service_name"
	fi
	) > /service/$service_name/log/run
	chmod +x /service/$service_name/log/run
	(
	echo "#!/bin/sh"
	echo "# generated run script for $host on `date`"
	echo "# by the below command"
	echo "# $prog_args"
	echo "exec 2>&1"
	echo
	echo "user=$user"
	echo "home=$home"
	echo
	echo "for i in lastfm librefm"
	echo "do"
	echo "  echo \"clearing \$i status\""
	echo "  @prefix@/bin/setuidgid \$user @prefix@/bin/envdir \\"
	echo "    variables @prefix@/bin/\$i-scrobbler --stop"
	echo "  find \$home/.config/\$i-scrobbler  -name '*'.log -ctime +7 -exec /bin/rm -f {} \;"
	echo "done"
	echo "for i in player playpause output mixer"
	echo "do"
	echo "  if [ -f \$home/.mpdev/.\$i.nooverwrite ] ; then"
	echo "    continue"
	echo "  fi"
	echo "  diff @mpdevlibexecdir@/\$i \$home/.mpdev/\$i > /dev/null 2>&1"
	echo "  if [ \$? -ne 0 ] ; then"
	echo "    cp @mpdevlibexecdir@/\$i \$home/.mpdev/\$i"
	echo "  fi"
	echo "done"
	echo "exec @prefix@/bin/setuidgid -s \$user @prefix@/bin/envdir \\"
	echo "  variables @prefix@/bin/mpdev -v"
	) > /service/$service_name/run
	chmod +x /service/$service_name/run
	(
	echo "#!/bin/sh"
	echo "# generated run script for $host on `date`"
	echo "# by the below command"
	echo "# $prog_args"
	echo "exec 2>&1"
	echo
	echo "user=$user"
	echo "home=$home"
	echo "for i in lastfm librefm"
	echo "do"
	echo "  echo \"clearing \$i status\""
	echo "  @prefix@/bin/setuidgid \$user @prefix@/bin/envdir \\"
	echo "    variables @prefix@/bin/\$i-scrobbler --stop"
	echo "done"
	) > /service/$service_name/shutdown
	chmod +x /service/$service_name/shutdown
}

del_service()
{
	if [ ! -d $servicedir/$service_name ] ; then
		return 0
	fi
	mv $servicedir/$service_name $servicedir/."$service_name"
	svc -dx $servicedir/."$service_name" $servicedir/."$service_name"/log > /dev/null
	sleep 5
	/bin/rm -rf $servicedir/."$service_name" $servicedir/."$service_name"/log > /dev/null
}

usage()
{
prog_args=""
if [ -f /usr/bin/less ] ; then
	MORE=/usr/bin/less
else
	MORE=/usr/bin/more
fi
echo "Press ENTER for options, Cntrl C to quit" 1>&2
read key
$MORE <<EOF
Usage: create_service [OPTIONS]
create_service --servicedir=dir --add-service
  or
create_service --servicedir=dir --del-service
EOF
exit $1
}

selinux_module()
{
	if [ -f /usr/sbin/selinuxenabled ] ; then
		selinuxenabled
		if [ $? -ne 0 ] ; then
			return 1
		fi
	else
		return 1
	fi
	if [ -f @sysconfdir@/mpdev/mpd_local.te ] ; then
		outdir=$(mktemp -dt mpdevXXXXXXXXXX)
		checkmodule -M -m -o $outdir/mpd_local.mod @sysconfdir@/mpdev/mpd_local.te
		semodule_package -o $outdir/mpd_local.pp -m $outdir/mpd_local.mod 
		semodule -i $outdir/mpd_local.pp 
	fi
}

################################# Main ##################################
if test $# -eq 0; then
    usage 1
fi
service_name=mpdev
logdir=/var/log/svc
servicedir=/service
lcdhost=""
lcdport=""
lcdfifo=""
prog_args="$0 $*"
SYSTEM=$(uname -s)
while test $# -gt 0; do
    case "$1" in
    -*=*) optarg=`echo "$1" | sed 's/[-_a-zA-Z0-9]*=//'`
	;;
    *) optarg=
	;;
    esac

    case "$1" in
    --servicedir=*)
    servicedir=$optarg
    ;;
    --user=*)
    user=$optarg
    ;;
    --lcdhost=*)
	lcdhost=$optarg
	;;
    --lcdport=*)
	lcdport=$optarg
	;;
    --lcdfifo=*)
	lcdfifo=$optarg
	;;

    --add-service)
	if [ -z "$user" ] ; then
		echo "UNIX user not specified" 1>&2
	else
		add_service "$user"
		selinux_module
	fi
    ;;
    --del-service)
	del_service
    ;;
	--selinux)
	selinux_module
	;;
    *)
    echo "invalid option [$1]"
    read key
    usage 1
    ;;
    esac
    shift
done
#
# $Log: create_service.in,v $
# Revision 1.29  2023-06-30 10:16:44+05:30  Cprogrammer
# added --lcdfifo argument to create LCD_FIFO env variable
#
# Revision 1.28  2023-06-26 23:17:24+05:30  Cprogrammer
# added --lcdhost, --lcdport to add LCD_HOST, LCD_PORT env variables
#
# Revision 1.27  2023-06-25 11:15:13+05:30  Cprogrammer
# added lcd_display script
#
# Revision 1.26  2023-05-18 08:49:31+05:30  Cprogrammer
# added selinux module
#
# Revision 1.25  2022-11-26 20:40:05+05:30  Cprogrammer
# added supplementary group when running mpdev
#
# Revision 1.24  2022-06-24 09:30:12+05:30  Cprogrammer
# use relative path for variables directory
#
# Revision 1.23  2022-06-23 21:56:43+05:30  Cprogrammer
# added lastfm-scrobbler --stop, librefm-scrobbler --stop for cleanup
#
# Revision 1.22  2022-06-23 09:05:36+05:30  Cprogrammer
# Mac OSX port
#
# Revision 1.21  2022-06-20 01:00:29+05:30  Cprogrammer
# use directories set by ./configure
#
# Revision 1.20  2021-09-26 02:57:43+05:30  Cprogrammer
# change ownership of $HOME/.mpdev to uid 1000
#
# Revision 1.19  2021-09-09 17:10:03+05:30  Cprogrammer
# added mixer script
#
# Revision 1.18  2021-09-09 12:17:03+05:30  Cprogrammer
# added script output
#
# Revision 1.17  2021-04-25 10:22:15+05:30  Cprogrammer
# remove cleanup of /tmp/mpdev as purpose is solved by having it as TMPFS
#
# Revision 1.16  2021-04-19 21:16:09+05:30  Cprogrammer
# added MPDEV_TMPDIR variable
#
# Revision 1.15  2021-04-15 12:26:20+05:30  Cprogrammer
# fixed cleanup of /tmp/mpdev
#
# Revision 1.14  2021-04-14 21:49:57+05:30  Cprogrammer
# do cleanup only once
#
# Revision 1.13  2021-04-14 13:19:21+05:30  Cprogrammer
# fixed .options
#
# Revision 1.12  2021-04-14 09:45:58+05:30  Cprogrammer
# update variables only if changed
#
# Revision 1.11  2021-04-10 19:13:30+05:30  Cprogrammer
# create variables/.options file
#
# Revision 1.10  2021-02-25 15:40:13+05:30  Cprogrammer
# use relative path for variables to allow renaming of service directory
#
# Revision 1.9  2021-02-25 15:13:08+05:30  Cprogrammer
# added cleanup of /tmp/mpdev and logs in scrobbles directory
#
# Revision 1.8  2021-01-07 12:20:08+05:30  Cprogrammer
# fixed copy
#
# Revision 1.7  2020-08-30 10:56:28+05:30  Cprogrammer
# update player, playpause script on startup
#
# Revision 1.6  2020-08-18 08:20:14+05:30  Cprogrammer
# copy playpause script
#
# Revision 1.5  2020-08-17 22:15:20+05:30  Cprogrammer
# set default rating to 0
#
# Revision 1.4  2020-07-23 10:47:04+05:30  Cprogrammer
# fixed path variable
#
# Revision 1.3  2020-07-23 01:48:43+05:30  Cprogrammer
# fix for raspberry pi, dietpi
#
# Revision 1.2  2020-07-22 15:51:03+05:30  Cprogrammer
# added AUTO_RATING env variable
#
# Revision 1.1  2020-07-19 18:17:00+05:30  Cprogrammer
# Initial revision
#