Subversion Repositories sysadmin_scripts

#! /usr/bin/env perl

# take persistent storage created by mapSwitches.pl and dump entries
# to a tab delimited text file on STDOUT.

use strict;
use warnings;

use File::Spec; # find location of script so we can put storage in same directory
use File::Basename;
use YAML::Tiny; # apt-get libyaml-tiny-perl under debian
use POSIX qw( strftime ); # to convert timestamp to something readable

our $VERSION = '1.1';

# where the script is located
my $scriptDir = dirname( File::Spec->rel2abs( __FILE__ ) );
# put the statefile in there
my $STATEFILE = $scriptDir . '/mapSwitches.yaml';

my %switchports;

# pretty up the MAC addresses by inserting colons between
# every pair of numbers
sub prettyMAC {
   my $mac = shift;
   my @mac = ( $mac =~ m/../g );
   return join( ':', @mac );
}

# change the Unix timestamp into yyyy-mm-dd hh:mm:ss
sub prettyTime {
   my $time = shift;
   return '' unless $time;
   return strftime '%Y-%m-%d %H:%M:%S', localtime( $time );
}

sub dumpLine {
   my $delimiter = shift;
   my $encapsulate = shift;
   my @values = @_;
   my $return;
   @values = ( map{ $encapsulate . $_ . $encapsulate } @values ) if $encapsulate;
   return join( $delimiter, @values ) . "\n";
}


# read the saved state into memory if it exists
die "no state file found, looking at $STATEFILE\n" unless -e $STATEFILE;

# get the delimiter and the encapsulation chars
my $delimiter = shift;
my $encapsulate = shift;
# default to tab delimited, no encapsulation if none entered
$delimiter = "\t" unless $delimiter;
$encapsulate = '' unless $encapsulate;

my $yaml = YAML::Tiny->read( $STATEFILE );
%switchports = %{ $yaml->[0] };

foreach my $switch ( sort keys %switchports ) {
   print "$switchports{$switch}{'name'} Located at $switchports{$switch}{'location'}\n";
   # print the header
   print &dumpLine(  $delimiter,$encapsulate,'Switch','Port','Alias','MAC','IP','Host Name','Last Seen' );
   foreach my $port ( sort {$a<=>$b} keys %{$switchports{$switch}{'ports'}} ) {
      foreach my $connection ( keys %{$switchports{$switch}{'ports'}{$port} } ) {
         next if $connection eq 'alias';
         print &dumpLine ( $delimiter,$encapsulate,
            $switch,
            $port,
            $switchports{$switch}{'ports'}{$port}{'alias'},
            &prettyMAC( $switchports{$switch}{'ports'}{$port}{$connection}{'mac'}),
            $switchports{$switch}{'ports'}{$port}{$connection}{'ip'},
            $switchports{$switch}{'ports'}{$port}{$connection}{'hostname'},
            &prettyTime( $switchports{$switch}{'ports'}{$port}{$connection}{'lastseen'} )
         ) ;
      }
   }
}

1;