#!/bin/perl
use strict;

use Tk;
use Tk::Table;
use POE qw/ Loop::TkActiveState /;
use POE::Component::Server::Syslog;
use Thread;

my $LOGFILE = "syslog.txt";

my $thr = new Thread \&dummy_thread;

POE::Session->create(
  inline_states => {
    _start    => \&build_gui,
    ev_syslog => \&syslogdeamonpoe,
    ev_loop   => \&loop,
  }
);

my $table;

$poe_kernel->run();
print "Tschüss'n\n";
exit 0;

sub dummy_thread {
  while (1) {
    #print "I'm alive!\n";
    sleep (10);
  }
}

sub build_gui {
  my ($kernel, $session, $heap) = @_[KERNEL, SESSION, HEAP];
  my $mbar = $poe_main_window->Menu();
  
  # Menüleiste
  $poe_main_window -> configure(-menu => $mbar);
  my $help = $mbar -> cascade(-label =>"Help", -underline=>0, -tearoff => 0);
  $help -> command(-label =>"About", -command => sub {return; });
  # Menüleiste Ende
  
  
  my $cols = 8;
  #my $tableFrame = $poe_main_window->Frame(-borderwidth => 2,-relief => 'raised');
  
  #-columns => 8, -rows => 5,
  $table = $poe_main_window->Table(-columns => $cols, -rows => 20,
  -fixedrows => 1, -scrollbars => 'se',
  -relief => 'raised');
  
  # Spaltenköpfe
  my @tableheader = qw /time origin ip facility severity time hostname message/;
  foreach my $c ( 0 .. $cols-1) {
    #my $hdr = "Sp " . $c;
    my $tmp = $tableheader[$c]; #$table->Label(-text => $tableheader[$c], -relief =>'flat');
    $table->put( 0, $c, "$tmp" );
  }
  
  for my $i (1 .. 8) {
    for my $j (0 .. 7) {
      #my $tmp = $table->Label(-text => "$i,$j", -relief =>'sunken', -bg=>'white');
      my $tmp = "$i,$j";
      #$table->put( $i, $j, "$tmp" );
    }
  }
  
  
  #foreach my $r ( 1 .. $rows ) {
  #my @tableheader = qw / time origin ip facility severity time hostname message/;
  #  for ( 0 .. $cols ) {
  #    my $tmp = $table->Label(-text => $tableheader[$_], -padx => 2, -anchor => 'nw', -background => 'white', -relief => 'groove');
  #    #$tmp->bind('<Button>', [ \&toggleRow, $table ]);
  #    $table->put( 1, $_, $tableheader[$_] );
  #  }
  #}
  
  
  $table->grid (-row=>1, -column=>1, -sticky=>"NESW");
  $poe_main_window->gridColumnconfigure(1, -weight => 1);
  $poe_main_window->gridRowconfigure(1, -weight => 1);
  
  #my $run=0;
  #$poe_main_window->repeat(1000 => \&run);
  
  #my $thr = threads->new(\&syslogdeamon);
  $kernel->yield("ev_syslog");
}

sub syslogdeamonpoe {
  POE::Component::Server::Syslog->spawn(
  BindAddress => 0.0.0.0,
  BindPort => 514,
  InputState => \&input,
  );
  $_[KERNEL]->yield("ev_loop");
}

sub loop {
  #$_[HEAP]->{counter}++;
  #$poe_main_window->update;    # Needed on SunOS & MacOS-X
  $_[KERNEL]->yield("ev_loop");
}

sub input {
  print "$_[ARG0]\n";
  my $severity = $_[10]->{severity};
  my $facility = $_[10]->{facility};
  my $message  = $_[10]->{msg};
  foreach my $key (keys %{$_[10]}) {
    print "$key : $_[10]{$key}\n";
  }
  print "----------------------------------\n";
  $table->put( 1, 4, "$severity" );
  $table->put( 1, 3, "$facility" );
  $table->put( 1, 7, "$message" );
  return;
}

sub syslogdeamon {
    my $sysloghandle = Net::Syslogd->new() or die "Error creating Syslogd listener: ", Net::Syslogd->error;
    
    # Logfile einlesen
    open SYSLOG, "<$LOGFILE";
    
    my $i=1;
    #foreach (<SYSLOG>) {
    #    chomp;
    #    my $a; my $b; my $c; my $d; my $e; my $f; my $g; my $h;
    #    ($a,$b,$c,$d,$e,$f,$g,$h) = split/\|/,$_;
    #    
    #    #$sttxt->insert("1.0", "$a\n");
    #    $table->put( $i, 0, $a );
    #    $i++;
    #}
    close SYSLOG;
    
    while (1) {
        my $message = $sysloghandle->get_message();
        
        if (!defined($message)) {
            printf "$0: %s\n", Net::Syslogd->error;
            exit 1;
        } elsif ($message == 0) {
            next;
        }
    
        if (!defined($message->process_message())) {
            printf "$0: %s\n", Net::Syslogd->error;
        } else {
            my $peeraddr = $message->peeraddr; 
            my $port     = $message->peerport;
            my $facility = $message->facility;
            my $severity = $message->severity;
            my $time     = $message->time;
            my $hostname = $message->hostname;
            my $message  = $message->message;
            my $localt  = localtime;
            
            ($localt) = $localt =~ /.{3} (.*)/;
            
            chomp($peeraddr); chomp($port); chomp($facility); chomp($severity); chomp($time); chomp($hostname); chomp($message);
            
            #printf "A:%s F:%s S:%s T:%s H:%s M:%s\n", $peeraddr, $facility, $severity, $time, $hostname, $message;
            
            my $sender   = $peeraddr;
            
            $time = "" if ($time == "0");
            $hostname = "" if ($hostname == "0");
            
            if ($message =~ /^Address=/) {
                $hostname = "";
                if ($message =~ /^Address=([^\s]*) (.*:[0-9]{1,2}) ([^\s]*) (.*)/) {
                    ($peeraddr, $time, undef, $message) = $message =~ /^Address=([^\s]*) (.*:[0-9]{1,2}) ([^\s]*) (.*)/;
                    $message =~ s/$peeraddr//;
                    $message .= " # fwd. by $sender";
                }
                else {
                    ($peeraddr, $message) = $message =~ /^Address=([^\s]*) (.*)/;
                    $message =~ s/^Address=$peeraddr//;
                    $message .= " # fwd. by $sender";
                }
            }
            $message =~ s/\s{2,}/ /;
            
            # Logfile schreiben
            my $log = sprintf "%s|%s|%s|%s|%s|%s|%s|%s\n", $localt, $peeraddr, $sender, $facility, $severity, $time, $hostname, $message;
            open SYSLOG, ">>$LOGFILE";
            printf SYSLOG "$log";
            printf "$localt\n";
            close SYSLOG;
            
            #my $tmp = $table->Label(-text => $localt, -padx => 2, -anchor => 'w', -background => 'white', -relief => 'groove');
            #$tmp->bind('<Button>', [ \&toggleRow, $table ]);
            #$tmp->bind('Label', "$localt");
            #$table->put( 1, 1, "$localt" );
            #$table->update;
            
            #my $tmp = $table->Label(-text => $localt, -relief =>'flat'); #
            $table->put( 0, 0, "$localt" );
            #$table->clear();
            
            
            #$table->Lable( 1, 1, "$localt" );
            #my $widget = $table->get(0,0);
            #print "$widget\n";
            
            #$sttxt->insert("1.0", "$localt\n");
            #$ortxt->insert("1.0", "$peeraddr\n");
            #$iptxt->insert("1.0", "$sender\n");
            #$fatxt->insert("1.0", "$facility\n");
            #$setxt->insert("1.0", "$severity\n");
            #$titxt->insert("1.0", "$time\n");
            #$hotxt->insert("1.0", "$hostname\n");
            #$metxt->insert("1.0", "$message\n");
            #$txt -> configure(-state=>"disabled");
        }
    }
}