#!/bin/sh

# $FreeBSD: head/sysutils/bsd-splash-changer/files/change_splash.in 340872 2014-01-24 00:14:07Z mat $
#
# PROVIDE: change_splash
# REQUIRE: mountcritremote
#
# Boot Splash Image Changer * martinko [09-feb-2006]
#
# Add the following to /etc/rc.conf[.local] to enable this service:
#
# splash_changer_enable="YES"
# splash_changer_dir (string):		Defaults to "%%DATADIR%%".
#					Splash image file is randomly picked up from this directory.
# splash_changer_file (string):		Defaults to "/boot/splash".
#					This is where the image file is copied to.

. /etc/rc.subr

name=change_splash
rcvar=splash_changer_enable

load_rc_config $name

: ${splash_changer_enable="NO"}
: ${splash_changer_file="/boot/splash"}
: ${splash_changer_dir="%%DATADIR%%"}

start_cmd=${name}_start

change_splash_start()
{
	echo "Changing splash image."

	local splash_file splash_dir
	local fcount random choice select filename

	splash_file="${splash_changer_file-"/boot/splash"}"
	splash_dir="${splash_changer_dir-"%%DATADIR%%"}"

	[ -f "$splash_file" -o ! -e "$splash_file" ] || err 1 "$splash_file is not a file"
	[ -d "$splash_dir" ] || err 2 "$splash_dir is not a directory"

	if [ "$splash_dir" = "${splash_file%/*}" ]
	then
		fcount="`ls -1 "$splash_dir" | grep -v "^${splash_file##*/}$" | wc -l`"
	else
		fcount="`ls -1 "$splash_dir" | wc -l`"
	fi
	random="`od -A n -D -N 1 < /dev/random`"
	choice="`expr $random % $fcount`"
	select=0

	[ -z "$choice" ] && err 3 "choice failed"

	for filename in "$splash_dir"/*
	do
		if [ $select -eq $choice ]
		then
			cp -f "$filename" "$splash_file"
			break
		fi
		select="`expr $select + 1`"
	done

	debug "Boot splash image changed to $filename"
}

run_rc_command "$1"