#!/usr/bin/perl

use HTTP::Date;
use Date::Manip;

 $logfile="/var/log/pure-ftpd/transfer.log";
 $ts="/tmp/munin_pureftpd_traffic_plugin_ts";

if ($ARGV[0] eq "test") {
    $handle = open LOG,"<$logfile";
    if(!$handle) {
     print "Can't open logfile!\n";
     exit -1;
    }
    $handle = open TS,"<$ts";
    if(!$handle) {
     print "Can't open lockfile!\n";
     exit -1;
    }
    print "OK\n";
    exit 0;
}

if ($ARGV[0] eq "config") {
 $out.="graph_title pureftpd traffic
graph_category network
graph_info This graph shows pureftpd traffic.
graph_vlabel Bytes
get.label Get
get.type COUNTER
get.draw LINE1
get.colour ff0000
put.label Put
put.type COUNTER
put.draw LINE1
put.colour 00ff00
mti.label MTI
mti.type COUNTER
mti.draw LINE1
mti.colour 0000ff
dsm.label DSM
dsm.type COUNTER
dsm.draw LINE1
dsm.colour 009999
";
 print $out;
 exit 0;
}

if (!(-e $logfile)) {
  die "No transfer.log available!";
 }
 if (!(-e $ts)) {
  open LOG, "<$logfile" or print "Can't open logfile!\n";
  my $last_line;
  while(<LOG>) {
   $last_line = $_ if eof;
  }
  close LOG;
  @em = split(/ /,$last_line);
  $curr_ts = "$em[3] $em[4]";
  $curr_ts =~ s/\[//g;
  $curr_ts =~ s/\]//g;

  open TS, ">$ts";
  print TS $curr_ts;
  close TS;
  $last_ts=$curr_ts;
 } else {
  open TS, "<$ts";
  @l=<TS>;
  close TS;
  $last_ts=$l[0];
 }

 my $get=0,
    $put=0,
    $mti=0,
    $dsm=0;

 open LOG, "<$logfile";
 @log=<LOG>;
 foreach $row (@log) {
   @parts=split(/ /,$row);
   $curr_ts = "$parts[3] $parts[4]";
   $curr_ts =~ s/\[//g;
   $curr_ts =~ s/\]//g;

   if ( Date_Cmp($curr_ts,$last_ts) > 0 ) {
      if ( $parts[5]=~ /GET/ ) {
          $get+=int($parts[8]);
          if ($parts[2] eq "mti") {
	      $mti+=int($parts[8]);
	     }
          if ($parts[2] eq "dsm") {
	      $dsm+=int($parts[8]);
	     }
         }
      if ( $parts[5]=~ /PUT/ ) {
          $put-=int($parts[8]);
          if ($parts[2] eq "mti") {
	      $mti-=int($parts[8]);
	     }
          if ($parts[2] eq "dsm") {
	      $dsm-=int($parts[8]);
	     }
         }
     }
 }

 open TS, ">$ts";
 print TS $curr_ts;
 close TS;
 close LOG;
 $out="get.value $get
put.value $put
mti.value $mti
dsm.value $dsm
";
 print $out;
 exit (0);

__END__