Subversion Repositories camp_sysinfo_client_3

#!/usr/bin/env perl

use warnings;

use strict;  

use version ; our $VERSION = '1.3';

# Linux network module for sysinfo client

# Author: R. W. Rodolico

# Date:   2016-04-08

# module to get network interface information for Linux systems

# assumes ifconfig is on the system and executable by the user

# NOTE: this takes the ifconfig output and parses it, so changes to 

#       this output invalidates this module

#

# Revision History

# 2018-05-20 RWR

# Modified to use ip vs ifconfig, and changed the regex's.

# kept the original ifconfig code but commented it out

# find our location and use it for searching for libraries. library.pm must be in the same directory as the calling script

# or, if run interactively, in the parent of the modules

BEGIN {

   use FindBin;

   use File::Spec;

   # prepend the bin directory and its parent

   use lib File::Spec->catdir($FindBin::Bin), File::Spec->catdir("$FindBin::Bin/..");

   eval( 'use library;' );

   die sprintf( "Could not find library.pm in %s, INC is %s\n", __FILE__, join( "\n", @INC ) ) if $@;

}

#####

##### Change these to match your needs

#####

# Make this a list of all the modules we are going to use. You can replace undef with the version you need, if you like

my $modulesList = {

        'Data::Dumper'     => undef,

   };

# hash of commands that are needed for the system. key is the name of the command and, in some cases, the value will become

# the full path (from which or where)

my $commandsList = {

        'ip' => undef,

   };

# list of operating systems this module can be used on.

my $osList = {

#         'mswin32' => undef,

#         'freebsd' => undef,

         'linux'   => undef,

   };

# the category the return data should go into. See sysinfo for a list

my $CATEGORY = 'network';

#####

##### End of required

#####

# some variables needed for our system

my $errorPrepend = 'error: in ' . __FILE__; # this is prepended to any error messages

my @out; # temporary location for each line of output

# Try to load the modules we need. If we can not, then make a list of missing modules for error message.

for my $module ( keys %$modulesList ) {

   eval ( "use $module;" );

   push @out, "$errorPrepend Could not load $module" if $@;

}

if ( ! @out && ! checkOS ( $osList ) ) { # check if we are on an acceptible operating system

    push @out, "$errorPrepend Invalid Operating System";

}

if ( !@out && ! validCommandOnSystem ( $commandsList ) ) {

   push @out, "$errorPrepend Can not find some commands needed";

}

if ( !@out ) { # we made it, we have everything, so do the processing

   #####

   ##### Your code starts here. Remember to push all output onto @out

   #####

   # get list of all interfaces except lo

   my @interfaces = `ip -o a s | cut -d' ' -f2 | sort | uniq | grep -v 'lo'`;

   chomp @interfaces;

   my $ipv4Regex = '\b(?:[0-9]{1,3}\.){3}[0-9]{1,3}\b';

   my $ipv6Regex = '(([a-f0-9]+):{1,2})+[a-z0-9]+';

   foreach my $if ( @interfaces ) {

      foreach my $line ( `ip address show $if` ) {

         # mtu

         if ( $line =~ m/mtu\s+(\d+)/i ) {

            push @out, "$CATEGORY\t$if\tmtu\t$1";

         # MAC

         } elsif ( $line =~ m/((([a-f0-9]{2}):){5}[a-f0-9]+)/i ) {

            push @out, "$CATEGORY\t$if\tmac\t$1";

         # inet 6

         } elsif ( $line =~ m"inet6\s*((([a-f0-9]+):{1,2})+[a-z0-9]+)/(\d{1,2})"i ) {

            push @out, "$CATEGORY\t$if\tip6address\t$1";

            push @out, "$CATEGORY\t$if\tip6networkbits\t$4";

         # inet 4

         } elsif ( $line =~ m"inet.*($ipv4Regex)/(\d{2})" ) {

            push @out, "$CATEGORY\t$if\taddress\t$1";

            push @out, "$CATEGORY\t$if\tnetmask\t$2";

         }

      }

   }

   #####

   ##### Your code ends here.

   #####

}

# If we are testing from the command line (caller is undef), print the results for debugging

print join( "\n", @out ) . "\n" unless caller;

# called by do, which has a value of the last assignment made, so make the assignment. The equivilent of a return

my $return = join( "\n", @out );