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|
#!/usr/bin/perl
#
# Module: vyatta-op-dynamic-dns.pl
#
# **** License ****
# This program is free software; you can redistribute it and/or modify
# it under the terms of the GNU General Public License version 2 as
# published by the Free Software Foundation.
#
# This program is distributed in the hope that it will be useful, but
# WITHOUT ANY WARRANTY; without even the implied warranty of
# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
# General Public License for more details.
#
# This code was originally developed by Vyatta, Inc.
# Portions created by Vyatta are Copyright (C) 2008 Vyatta, Inc.
# All Rights Reserved.
#
# Author: Mohit Mehta
# Date: September 2008
# Description: Script to execute op-mode commands for Dynamic DNS
#
# **** End License ****
#
use lib "/opt/vyatta/share/perl5/";
use Getopt::Long;
use Vyatta::Config;
use strict;
use warnings;
sub print_ddns_stats {
my $ddclient_cache_dir = '/var/cache/ddclient';
my @ddns_interfaces = get_ddns_interfaces();
if (@ddns_interfaces > 0){
foreach my $configuredinterface (@ddns_interfaces) {
my $no_interface = `ip addr show dev $configuredinterface 2>/dev/null`;
my $no_ip = `ip addr show dev $configuredinterface 2>/dev/null | grep "inet "`;
my @all_cached_entries = `grep "^atime" $ddclient_cache_dir/ddclient_$configuredinterface.cache 2>/dev/null`;
if (@all_cached_entries > 0) {
foreach my $each_entry (@all_cached_entries) {
print "interface : $configuredinterface";
if ($no_interface eq ""){
print " [ Interface does not exist ]";
} elsif ($no_ip eq ""){
print " [ Currently no IP address ]";
}
print "\n";
my @split_on_ip = split(/ip=/, $each_entry);
if (@split_on_ip > 1){
my @ip = split(/,/, $split_on_ip[1]);
print "ip address : $ip[0]\n";
}
my @split_on_host = split(/host=/, $each_entry);
my @host = split(/,/, $split_on_host[1]);
print "host-name : $host[0]\n";
my @split_on_atime = split(/atime=/, $each_entry);
my @atime = split(/,/, $split_on_atime[1]);
my $prettytime = scalar(localtime($atime[0]));
print "last update : $prettytime\n";
my @split_on_status = split(/status=/, $each_entry);
my @status = split(/,/, $split_on_status[1]);
print "update-status: $status[0]\n";
print "\n";
}
} else {
print "interface : $configuredinterface";
if ($no_interface eq ""){
print " [ Interface does not exist ]";
} elsif ($no_ip eq ""){
print " [ Currently no IP address ]";
} else {
print " \n[ Status will be updated within 60 seconds ]";
}
print "\n\n";
}
}
} else {
print "Dynamic DNS not configured\n";
}
print "\n";
}
sub get_ddns_interfaces {
my $vyatta_config = new Vyatta::Config;
$vyatta_config->setLevel("service dns dynamic");
my @ddns_interfaces = $vyatta_config->listOrigNodes("interface");
@ddns_interfaces = sort(@ddns_interfaces);
return (@ddns_interfaces);
}
#
# main
#
my ($show_status, $update_ddns, $interface, $show_interfaces);
GetOptions("show-status!" => \$show_status,
"update-ddns!" => \$update_ddns,
"interface=s" => \$interface,
"show-interfaces!" => \$show_interfaces);
if (defined $show_status) {
print_ddns_stats;
}
if (defined $update_ddns && defined $interface) {
my @ddns_interfaces = get_ddns_interfaces();
my $interface_configured = 0;
foreach my $ddns_interface (@ddns_interfaces) {
if ($ddns_interface eq $interface) {
$interface_configured = 1;
}
}
if ($interface_configured == 1) {
system("sudo /opt/vyatta/sbin/vyatta-dynamic-dns.pl --op-mode-update-dynamicdns --interface $interface");
} else {
print "$interface has not been configured to send Dynamic DNS updates\n";
}
}
if (defined $show_interfaces) {
my @ddns_interfaces = get_ddns_interfaces();
print "@ddns_interfaces\n";
}
exit 0;
# end of file
|
