mydns.jp 用に IP更新 スクリプトを作成した。

IPv4 と IPv6に対応した perl スクリプトです。

 

#!/usr/bin/perl
use Net::INET6Glue::INET_is_INET6;
use LWP::UserAgent;
use strict;
use warnings;
use Socket;
use Socket6;
use Time::Piece;

#MyDNS アカウント  ご自分のアカウントに修正して下さい。
my $user = 'user';
my $pass = 'pass';
my $host = 'xxx.server-on.net';

my $ua = LWP::UserAgent->new;


#最終更新日取得(7日更新無しで強制更新)
if( -e "mydnslastmodify.dat" )
{
        open(FH, "<mydnslastmodify.dat");
        my $lastnow = localtime(<FH> + 3600*24*7 );
        close(FH);
        my $now = localtime(time);
        if( $now > $lastnow )
        {
                &updateipv4;
                &updateipv6;
                exit;
        }
}
else
{
        &updateipv4;
        &updateipv6;
        exit;
}


#登録 DNSアドレス取得(ipv4)
my ($name, $aliases, $addrtype, $length, @ipaddr) = gethostbyname($host);
my $address;
foreach (@ipaddr) {
    $address = join '.', unpack('C4', $_);
}

sub updateipv4 {
        #IPv4
        my $req = HTTP::Request->new(GET =>
'http://ipv4.mydns.jp/login.html');
        $req->authorization_basic($

user, $pass);
        $ua->request($req)->as_string;
        print "IPv4 update \n";

        #更新日保存
        open(OUT, ">mydnslastmodify.dat");
        print OUT time;
        close(OUT);
}

sub updateipv6 {
        #IPv6
        my $req = HTTP::Request->new(GET =>
'http://ipv6.mydns.jp/login.html');
        $req->authorization_basic($user, $pass);
        $ua->request($req)->as_string;
        print "IPv6 update \n";

        #更新日保存
        open(OUT, ">mydnslastmodify.dat");
        print OUT time;
        close(OUT);
}

#実態アドレス取得更新(ipv4)
my $reqA = HTTP::Request->new(GET => 'http://ipv4.mydns.jp/?MENU=400');
my $respA = $ua->request($reqA)->as_string;
my $remote_address;
if($respA =~ /(You access from : )(.*?)(<\/)/s)
{
    $remote_address = $2;

    if( $address eq $remote_address )
    {
        print "equal |$address| |$remote_address|\n";
    }
    else
    {
        print "not equal |$address| |$remote_address|\n";

        &updateipv4;
    }
}
else
{
    print "Can't find IPv4 Address!!\n";
}


#print "--------------------ipv6----------------------\n";

#登録 DNSアドレス取得(ipv6)
my @getaddr = getaddrinfo($host, 0);
my $netaddr6 = (unpack_sockaddr_in6($getaddr[3]))[1];
my $address6 = inet_ntop($getaddr[0], $netaddr6);

#実態アドレス取得更新(ipv6)
my $reqB = HTTP::Request->new(GET => 'http://ipv6.mydns.jp/?MENU=400');
my $respB = $ua->request($reqB)->as_string;
if($respB =~ /(You access from : )(.*?)(<\/)/s)
{
    $remote_address = $2;

    if( $address6 eq $remote_address )
    {
        print "equal |$address6| |$remote_address|\n";
    }
    else
    {
        print "not equal |$address6| |$remote_address|\n";

        &updateipv6;
    }
}
else
{
    print "Can't find IPv6 Address!!\n";
}


#
# Needs perl UserAgent
# ports install
# /usr/ports/www/p5-libwww
# /usr/ports/net/p5-Socket6
# /usr/ports/net/p5-Net-INET6Glue
#



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