#!/usr/bin/perl

########################################################

my $SYSTEM_VERS	=	$ARGV[0]."/System/Library/CoreServices/SystemVersion.plist";
my $QUICKTIME_VERS =	$ARGV[0]."/System/Library/Frameworks/QuickTime.framework/Versions/A/Resources/version.plist";
my $SERVER_VERS =	$ARGV[0]."/System/Library/CoreServices/ServerVersion.plist"; 
my $TIER3 =		$ARGV[0]."/var/db/.AppleTier3Language";
my $EXIT_VALUE = 0;

########################################################

DO_CHECKS: {
	# If system version is NOT 10.0 or higher, show error
   
   if(! -e $QUICKTIME_VERS ) 
    {
    	$EXIT_VALUE = (( 1 << 5 ) | 16);
		last;
    }
	if(-e $TIER3) {
		# no custom string is better, since this should be a generic error that's actually translated into primary language
		$EXIT_VALUE = ( 1 << 5);
	}
    
   if (CheckVersion("$QUICKTIME_VERS", "7.0", "CFBundleVersion", "<")) {
    	$EXIT_VALUE = (( 1 << 5 ) | 16);
        last;
    }
	
	
	# If system version IS  less than 10.3.9 show error
    if( CheckVersion( "$SYSTEM_VERS", "10.3.9", "ProductVersion", "<" )) 
	{
        $EXIT_VALUE = (( 1 << 5 ) | 17 );
		last;
	}
	
	# If system version IS less than 10.3.9 show error
    if( CheckVersion( "$SERVER_VERS", "10.3.9 ", "ProductVersion", "<" )) 
	{
        $EXIT_VALUE = (( 1 << 5 ) | 18 );
		last;
	}
	

}
exit($EXIT_VALUE);

########################################################

sub CheckVersion
{
    my $path            = $_[0];
    my $version         = $_[1];
    my $keyName         = $_[2];
    my $operator        = $_[3];

    if (! -e $path) {
        return 0;
    }

    if (!$operator) {
        $operator = "==";
    }

    my $oldSeperator = $/;
    $/ = \0;

    open( PLIST, "$path") || do {
        return 0;
    };

    $plistData = <PLIST>;
    $plistData =~ /<dict>(.*?)<\/dict>/gis;

    @items = split(/<key>/, $plistData);

    shift @items;
    foreach $item (@items) {
        $item =~ /(.*?)<\/key>.*?<string>(.*?)<\/string>/gis;
        $versiondata{ $1 } = $2;
    }

    close(PLIST);

    $/ = $oldSeperator;

    @theVersionArray = split(/\./, $versiondata{$keyName});
    for ($i = 0; $i < 3; $i++) {
        if(!$theVersionArray[$i]) {
            $theVersionArray[$i] = '0';
        }
    }

    @versionArray = split(/\./, $version);
    
    my $actualVersion;

    for ($i = 0; $i < 3; $i++) {
        if (($theVersionArray[$i] != $versionArray[$i]) or ($i == 2)) {

            $actualVersion = $theVersionArray[$i];
            $version = $versionArray[$i];

            last;
        }
    }

    my $expression = '$actualVersion ' . $operator . ' $version';
    if( eval ($expression) )
    {
        return 1;
    }
    else
    {
        return 0;
    }

}

