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#!/usr/bin/env perl
use strict;
use warnings;
use POSIX;
my $dhcpd_cmd="/usr/local/bin/dhcpd-pools";
my $dhcpd_lf="/var/lib/dhcp/dhcpd.leases";
my $dhcpd_cf="/etc/dhcp/dhcpd.conf";
my @output = `$dhcpd_cmd -c $dhcpd_cf -l $dhcpd_lf`;
my $line;
my $subnet;
my $subnet2;
for $line (@output) {
next if ($line =~ /^(shared net name|Ranges|name|Shared networks|Sum of all)/) or (length $line <= 1);
if ($line =~ /([\d]+\.[\d]+\.[\d]+\.[\d]+)\s+\-\s+([\d]+\.[\d]+\.[\d]+\.[\d]+)\s+([\d]+)\s+([\d]+)\s+([\d]+\.[\d]+)/) {
my $first_ip=$1;
my $last_ip=$2;
my $max=$3;
my $current=$4;
my $percent=ceil($5);
my $octet;
my @octets;
my $octet_count=0;
for $octet (@octets=(split('\.',$first_ip))) {
if ($octet_count == 3) {
$octet_count=0;
$subnet = $first_ip;
substr($subnet,-length($octet)) = ($octet-4);
$subnet =~ s/\./_/g;
if (defined $ARGV[0] && $ARGV[0] eq "config") {
print_config($subnet);
} else {
print "dhcp_pool_${subnet}.value $percent\n";
}
}
$octet_count++;
}
}
}
sub print_config {
my $graph_name;
$graph_name = shift;
print <<EOF;
graph_args --upper-limit 100 -l 0
graph_title DHCP IPv4 Pools Status
graph_vlabel %
graph_category DHCP
dhcp_pool_${graph_name}.label $graph_name
EOF
}
# print_config;
#shared net name first ip last ip max cur percent touch t+c t+c perc
# All networks 88.92.0.4 - 88.92.0.62 59 26 44.068 2 28 47.458
#}
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