#!/usr/bin/perl -w
use strict;
use Getopt::Std;
use Time::Local;
use POSIX qw(strftime);
$|++;
my %Opt;
my @Conns;

&GetArgs();
&GetConns();
&GetLogs();

sub GetArgs {
  my $Usage = qq{Usage: $0 [options]
        -h : This help message.
        -c : Specific connector - default is to list all connectors.
        -d : Specific direction - default is to list all directions
        -n : Trap name - default is to list all names
        -t : Time in stamp format mm/dd/yy-hh:mm or mm/dd/yy
                +<stamp> - show entries created after specified stamp
                        If time is not given, defaults to 23:59
                -<stamp> - show entries created before specified stamp
                        If time is not given, default to 00:00
                =<stamp> - show entries created on specified stamp
                        If time is not given it is ignored (all day)
                <stamp>+-<stamp> - show entries created between specified stamps
                        If time is not given on first stamp, 00:00 is used
                        If time is not given on second stamp, 23:59 is used
                        Note:  This includes the day(s) specified
        -s : Size of files caught in bytes
                +<size> - show entries with files larger than specified size
                -<size> - show entries with files smaller than specified size
                =<size> - show entries with files equal to specified size
                <size>+-<size> - show entries with files between specified sizes
  } . "\n";

  getopts( 'hc:d:n:t:s:', \%Opt ) or die "$Usage";
  die "$Usage" if $Opt{h};
  if ($Opt{d}) {
    $Opt{d} = lc($Opt{d});
    die "$Usage" if ($Opt{d} ne "in" && $Opt{d} ne "out" && $Opt{d} ne "both");
  }
}


sub GetConns {
  open (CONNECTORS,"/var/wt400/conf/_wtd.cfg") or die "\nUnable to open connector file!\n";
    while (<CONNECTORS>) {
      next unless ($_ =~ /^unit="(.*)"/);
      my $Conn = lc($1);
      next if ($Conn eq "ins" || $Conn eq "ins2" || $Conn eq "_wtd");
      push @Conns , $Conn;
    }
  close (CONNECTORS);
  if ($Opt{c}) {
    $Opt{c} = lc($Opt{c});
    if (grep /\b$Opt{c}\b/ , @Conns) {
      @Conns = $Opt{c};
    }
    else {
      die "\nInvalid connector - $Opt{c} !\n";
    }
  }
}

sub GetLogs {
  my @Logs;
  foreach my $Conn (@Conns) {
    my @Directions;
    if ($Opt{d}) {
      @Directions = $Opt{d};
    }
    else {
      @Directions = (qw(in out both));
    }
    foreach my $Dir (@Directions) {
      push @Logs , "/var/spool/wt400/log/$Conn/trap_${Dir}.log" if (-r "/var/spool/wt400/log/$Conn/trap_${Dir}.log" && -s _);
    }
  }
  unless (@Logs) {
    die "\nUnable to find any logs!\n";
  }
  else {
    while (my $File = shift @Logs) {
      my($mon, $day, $year, $hour, $min);
      open(LOG,$File);
      LINE:
      while (my $Line = <LOG>) {
        chomp $Line;
        my @Fields = split " " , $Line;
        if ($Opt{n}) {
          next unless (lc($Opt{n}) eq lc($Fields[3]));
        }
        if ($Opt{t}) {
          $Opt{t} =~ s/\s+//;
          my $Stamp1;
          my $Stamp2;
          if ($Opt{t} =~ /^\+(.*)/) {
           ($mon, $day, $year, $hour, $min) = split ?[-/:]? , $1;
           ($hour,$min) = (23,59) unless ($hour && $min);
           $Stamp1 = timelocal(0, $min, $hour, $day, $mon - 1, $year + 100);
           next unless ($Fields[0] > $Stamp1);
          }
          elsif ($Opt{t} =~ /^\-(.*)/) {
           ($mon, $day, $year, $hour, $min) = split ?[-/:]? , $1;
           ($hour,$min) = (00,00) unless ($hour && $min);
           $Stamp1 = timelocal(0, $min, $hour, $day, $mon - 1, $year + 100);
           next unless ($Fields[0] < $Stamp1);
          }
          elsif ($Opt{t} =~ /^\=(.*)/) {
            ($mon, $day, $year, $hour, $min) = split ?[-/:]? , $1;
            ($hour,$min) = (00,00) unless ($hour && $min);
            $Stamp1 = timelocal(0, $min, $hour, $day, $mon - 1, $year + 100);
            ($hour,$min) = (23,59) unless ($hour && $min);
            $Stamp2 = timelocal(0, $min, $hour, $day, $mon - 1, $year + 100);
            next unless ($Fields[0] >= $Stamp1 && $Fields[0] <= $Stamp2 );
          }
          elsif ($Opt{t} =~ /^(.*)\+\-(.*)/) {
            ($mon, $day, $year, $hour, $min) = split ?[-/:]? , $1;
            ($hour,$min) = (00,00) unless ($hour && $min);
            $Stamp1 = timelocal(0, $min, $hour, $day, $mon - 1, $year + 100);
            ($mon, $day, $year, $hour, $min) = split ?[-/:]? , $2;
            ($hour,$min) = (23,59) unless ($hour && $min);
            $Stamp2 = timelocal(0, $min, $hour, $day, $mon - 1, $year + 100);
            next unless ($Fields[0] >= $Stamp1 && $Fields[0] <= $Stamp2 );
          } 
        }
        if ($Opt{s}) {
          $Opt{s} =~ s/\s+//;
          if ($Opt{s} =~ /^\+(.*)/) {
           next unless ($Fields[2] > $1);
          }
          elsif ($Opt{s} =~ /^\-(.*)/) {
           next unless ($Fields[2] < $1);
          }
          elsif ($Opt{s} =~ /^\=(.*)/) {
            next unless ($Fields[2] == $1);
          }
          elsif ($Opt{s} =~ /^(.*)\+\-(.*)/) {
            next unless ($Fields[2] >= $1 && $Fields[2] <= $2 );
          } 
        }
        if ($File =~ /^.*\/(.*)\/trap_(.*)\.log/) {
          my $Conn = $1;
          my $Dir = $2;
          my $Time = strftime("[%x-%X]",localtime($Fields[0]));
          print "$Time $Conn $Dir $Fields[3] $Fields[1] $Fields[2]\n";
        }
      }
    }
  }
}