#!/usr/bin/perl -w

use strict;
use Foundation;

sub getPkgInfo($$) {
    my $pkg = shift;
    my $key = shift;
    my $rcpath = '/Library/Receipts/'.$pkg.'.pkg/Contents/Info.plist';
    my $plist = NSDictionary->dictionaryWithContentsOfFile_($rcpath);
    if ($plist && $$plist) {
        my $value = $plist->objectForKey_($key);
        return $value->description()->UTF8String();
    }
    return undef;
}
sub vcmp($$) {
    my $va = shift;
    my $vb = shift;
    return -1 unless(defined($va));
    return 1 unless(defined($vb));
    my @vaa = split(/\./, $va);
    my @vab = split(/\./, $vb);
    while ($#vaa < $#vab) {
        push @vaa, 0;
    }
    while ($#vab < $#vaa) {
        push @vab, 0;
    }
    my $i = 0;
    foreach (@vaa) {
        return -1 if ($_ < $vab[$i]);
        return 1 if ($_ > $vab[$i]);
        $i++;
    }
    return 0;
}

# Check for installed OpenSC
#my $opensc = 0;
#$opensc = 1 if (vcmp(getPkgInfo('OpenSC','CFBundleShortVersionString'), '0.11.8') >= 0);
#exit(112) unless ($opensc);

# Check for installed X11
my $x11 = 0;
my @chklocations = (
    '/usr/X11R6/bin/X',
    '/usr/X11R6/bin/quartz-wm',
    '/usr/bin/quartz-wm',
    '/opt/X11/bin/quartz-wm'
);
foreach (@chklocations) {
    $x11 = 1 if (-x $_);
}
exit(113) unless ($x11);

# Check for any running processes
my $apprunning = 0;
my @nxesdpids;
open (P, "ps xc|") || die "Can't run ps: $!\n";
while (<P>) {
    chomp;
    $apprunning = 1 if (/nxproxy$/);
    $apprunning = 1 if (/nxservice$/);
    $apprunning = 1 if (/nxssh$/);
    $apprunning = 1 if (/opennx$/);
    $apprunning = 1 if (/watchreader$/);
    # nxesd and pulseaudio are special:
    # If it is running AND none of the other
    # programs are running, then they simply can be killed
    if (/^(\d+)\s+.+nxesd$/) {
        push(@nxesdpids, $1);
    }
    if (/^(\d+)\s+.+pulseaudio$/) {
        push(@nxesdpids, $1);
    }
}
close P;
exit(114) if ($apprunning);
kill(15, @nxesdpids) if ($#nxesdpids >= 0);

# Everything OK
exit(0);