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#! /usr/bin/env perl
# take persistent storage created by mapSwitches.pl and dump entries
# to a tab delimited text file on STDOUT.
# v1.2 RWR 20200228
# added description field
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 = '1.2';
# 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;
# read in values, defaulting to empty string if undef
my @values = map{ $_ ? $_ : '' } @_;
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','Description','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' or $connection eq 'description';
print &dumpLine ( $delimiter,$encapsulate,
$switch,
$port,
$switchports{$switch}{'ports'}{$port}{'alias'},
$switchports{$switch}{'ports'}{$port}{'description'},
&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;