106 lines
3.0 KiB
Perl
106 lines
3.0 KiB
Perl
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#!/usr/bin/env perl
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#
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use 5.024;
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use strict;
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use warnings;
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use autodie;
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use Fcntl qw(:flock);
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use File::Basename;
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use File::Copy;
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use POSIX qw(strftime);
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use Net::IP;
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my $ipv4_range = new Net::IP("46.23.80.0/20");
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my $ipv6_range = new Net::IP("2a03:6000::/29");
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my $nsd = "/var/nsd/zones/reverse";
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my $v6_zone = "2a03.6000";
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my $workdir = dirname($0);
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my $serial;
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my $serial_prev;
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my $zonefile;
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opendir my $dh, "${workdir}/records";
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while (my $file = readdir $dh) {
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chomp $file;
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next if $file =~ /^\./;
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open my $fh_ptr, '<', "${workdir}/records/$file";
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my $replace = <$fh_ptr>;
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chomp $replace;
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my ($match, $rest) = split(' ', $replace, 2);
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close $fh_ptr;
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my $ip = new Net::IP($file);
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if ($ip->overlaps($ipv4_range)) {
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($zonefile = $file) =~ s/^((\d{1,3}\.){3})\d+$/${1}0/;
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} elsif ($ip->overlaps($ipv6_range)) {
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$zonefile = $v6_zone;
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}
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if (qx(rlog ${nsd}/${zonefile} | grep 'locked by') =~ m/locked by/) {
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_log("$file zone file locked, trying again later...");
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next;
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} else {
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open my $fh_in, '<', "${nsd}/$zonefile";
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open my $fh_out, '>', "${workdir}/zonefiles/$zonefile";
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while (my $row = <$fh_in>) {
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chomp $row;
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if ($row =~ m/^\s*(\d+)\s*; serial$/) {
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$serial = $serial_prev = $1;
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my $timestamp = strftime ("%Y%m%d", localtime()) . "01";
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if ($serial < $timestamp) {
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$serial = $timestamp;
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} else {
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$serial++;
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}
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$row =~ s/${serial_prev}/${serial}/;
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}
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if ($row =~ m/^${match}\s+IN\s+PTR\s+\S+( ;.*)?$/) {
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if ($1) {
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my $comment = $1;
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$row =~ s/^${match}\s+.*$/${replace}${comment}/;
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} else {
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$row =~ s/^${match}\s+.*$/${replace}/;
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}
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}
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print $fh_out "$row\n";
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}
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close $fh_in;
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close $fh_out;
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(my $diff = qx(diff ${nsd}/${zonefile} ${workdir}/zonefiles/${zonefile} | wc -l)) =~ s/^\s*(.*?)\s*$/$1/;
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if ($diff == 8) {
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_log("$file diff within limits ($diff), $serial_prev -> $serial");
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copy("${nsd}/${zonefile}", "${workdir}/zonefiles-archive/${zonefile}-${serial}");
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qx(co -q -l ${nsd}/${zonefile});
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copy("${workdir}/zonefiles/${zonefile}", "${nsd}/${zonefile}");
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qx(ci -q -u -m"updated for ${file}" ${nsd}/${zonefile});
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move("${workdir}/records/${file}", "${workdir}/records-archive/${file}-${serial}");
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qx(rcctl reload nsd);
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qx(rdist -f /etc/Distfile) if (-r '/etc/Distfile');
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open my $fh_email, '|-', '/usr/sbin/sendmail -t';
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print $fh_email "To: ptrd\@openbsd.amsterdam\n";
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print $fh_email "From: ptrd\@openbsd.amsterdam\n";
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print $fh_email "Subject: OpenBSD Amsterdam PTR $zonefile\n";
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print $fh_email "Content-Type: text/plain; charset=utf-8\n\n";
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print $fh_email "$serial_prev -> $serial\n$file\n$replace\n";
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close $fh_email;
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} else {
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_log("$file diff is outside limits ($diff), cleaning up");
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unlink("${workdir}/records/${file}", "${workdir}/zonefiles/${zonefile}");
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}
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}
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}
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sub _log {
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my ($msg) = @_;
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open my $fh, '>>', '/var/log/ptrd.log';
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flock $fh, LOCK_EX;
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print $fh sprintf("%s %s: %s \n", strftime("%b %d %H:%M:%S", localtime), basename($0), $msg);
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close $fh;
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}
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