#!/usr/bin/perl

########################################################
my $SYSTEM_VERS			= "/System/Library/CoreServices/SystemVersion.plist";
my $APPLICATION_LOC		= "/Applications/WaveBurner.app";
my $APPLICATION_VERS	= $APPLICATION_LOC . "/Contents/version.plist";
my $EXIT_VALUE			= 0;

DO_CHECKS: {
	########################################################################################
    if( CheckVersion( $SYSTEM_VERS, "10.3", "ProductVersion", "<" )) 
    {
        $EXIT_VALUE = ((1 << 6) | ( 1 << 5 ) | 16 );
		exit($EXIT_VALUE);
    }
	# Must NOT be tier 3
	my $TIER_3_LANG = "/var/db/.AppleTier3Language";
	if (-e $TIER_3_LANG) {
		# return custom error
		$EXIT_VALUE = ( ( 1 << 6 ) | ( 1 << 5 ) | 19 );
		exit($EXIT_VALUE);
    }
	
	########################################################
	# App must be there ...
	unless(-e $APPLICATION_LOC) {
		$EXIT_VALUE = (( 1 << 6 ) | ( 1 << 5 ) | 17);
		last;
	}
	# ... and must be 1.1 or 1.1.1 or 1.1.2
	# WaveBurner 1.1 has a CFBundleShortVersionString which is nonstandard, so compare by string match
	unless( (GetVersion($APPLICATION_VERS, "CFBundleShortVersionString") eq "WaveBurner version 1.1 (064) ") ||
			(GetVersion($APPLICATION_VERS, "CFBundleShortVersionString") eq "1.1.1") ||
			(GetVersion($APPLICATION_VERS, "CFBundleShortVersionString") eq "1.1.2")) {
				$EXIT_VALUE = (( 1 << 6 ) | ( 1 << 5 ) | 17);
				last;
	}
    
	########################################################
	my $APP					= "WaveBurner\.app";
	my $APP_IS_RUNNING 		= 0;
	my $SWU_APP				= "Software Update\.app";
	my $SWU_IS_RUNNING 		= 0;
	my $RUNNING_ERROR		= "Running";
	my $DISPLAYALERT		= $ARGV[0] . "/Contents/Resources/Alert.app/Contents/MacOS/Alert";
	########################################################
	open(PSOUT, "/bin/ps -awwx |");
	while( <PSOUT> ) {
		if( /\b$APP/ ) {
			$APP_IS_RUNNING = 1;
		}
	}
	close(PSOUT);
		
	open(PSOUT, "/bin/ps -awwx |");
	while( <PSOUT> ) {
		if( /\b$SWU_APP/ ) {
			$SWU_IS_RUNNING = 1;
		}
	}
	close(PSOUT);
		
	if (($APP_IS_RUNNING == 1) && ($SWU_IS_RUNNING == 0)) {
		$EXIT_VALUE = ((1 << 6) | ( 1 << 5 ) | 18 );
		last;
	} else {
		while (($APP_IS_RUNNING == 1) && ($SWU_IS_RUNNING == 1)) {
			$ENV{'ALERT_APP_ACTION'} = $RUNNING_ERROR;
			system($DISPLAYALERT,"");
			# per nat torkington
	
			$APP_IS_RUNNING = 0;
	
			open(PSOUT, "/bin/ps -awwx |");
			while( <PSOUT> ) {
				if( /\b$APP/ ) {
					$APP_IS_RUNNING = 1;
				}
			}
			close(PSOUT);
		} # while app is running, stay stuck here
	}
}

exit($EXIT_VALUE);


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

sub CheckVersion
{
    my $path            = $_[0];
    my $version         = $_[1];
    my $keyName         = $_[2];
    my $operator        = $_[3];
    my $i;
    my $oldSeperator;
    my $plistData;
    my @items;
    my $item;
    my @theVersionArray;
    my @versionArray;
    my %versiondata;

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

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

    $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;
    }

}

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

sub GetVersion
{
    my $path            = $_[0];
    my $keyName         = $_[1];
    
    my $oldSeperator;
    my $plistData;
    my @items;
    my $item;
    my $versiondata;
    my $i;
    my @theVersionArray;
    my %versiondata;
    my @versionArray;

    # if there's no THERE there, we return FALSE
    if (! -e $path) {
        return 0;
    }

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

    open( PLIST, "$path");

    $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;

    return($versiondata{$keyName});
}

