modules/pipebackend/backend-v3.pl

   1 #!/usr/bin/perl -w
   2 # sample PowerDNS Coprocess backend with edns-client-subnet support
   3 #
   4
   5 use strict;
   6
   7
   8 $|=1;                                   # no buffering
   9
  10 my $line=<>;
  11 chomp($line);
  12
  13 unless($line eq "HELO\t3" ) {
  14         print "FAIL\n";
  15         print STDERR "Received unexpected '$line', wrong ABI version?\n";
  16         <>;
  17         exit;
  18 }
  19 print "OK       Sample backend firing up\n";    # print our banner
  20
  21 while(<>)
  22 {
  23         print STDERR "$$ Received: $_";
  24         chomp();
  25         my @arr=split(/\t/);
  26         if(@arr < 8) {
  27                 print "LOG      PowerDNS sent unparseable line\n";
  28                 print "FAIL\n";
  29                 next;
  30         }
  31
  32         my ($type,$qname,$qclass,$qtype,$id,$ip,$localip,$ednsip)=split(/\t/);
  33         my $bits=21;
  34         my $auth = 1;
  35
  36         if(($qtype eq "SOA" || $qtype eq "ANY") && $qname eq "example.com") {
  37                 print STDERR "$$ Sent SOA records\n";
  38                 print "DATA     $bits   $auth   $qname  $qclass SOA     3600    -1      ahu.example.com ns1.example.com 2008080300 1800 3600 604800 3600\n";
  39         }
  40         if(($qtype eq "NS" || $qtype eq "ANY") && $qname eq "example.com") {
  41                 print STDERR "$$ Sent NS records\n";
  42                 print "DATA     $bits   $auth   $qname  $qclass NS      3600    -1      ns1.example.com\n";
  43                 print "DATA     $bits   $auth   $qname  $qclass NS      3600    -1      ns2.example.com\n";
  44         }
  45         if(($qtype eq "TXT" || $qtype eq "ANY") && $qname eq "example.com") {
  46                 print STDERR "$$ Sent TXT records\n";
  47                 print "DATA     $bits   $auth   $qname  $qclass TXT     3600    -1      \"hallo allemaal!\"\n";
  48         }
  49         if(($qtype eq "A" || $qtype eq "ANY") && $qname eq "webserver.example.com") {
  50                 print STDERR "$$ Sent A records\n";
  51                 print "DATA     $bits   $auth   $qname  $qclass A       3600    -1      1.2.3.4\n";
  52                 print "DATA     $bits   $auth   $qname  $qclass A       3600    -1      1.2.3.5\n";
  53                 print "DATA     $bits   $auth   $qname  $qclass A       3600    -1      1.2.3.6\n";
  54         }
  55         if(($qtype eq "CNAME" || $qtype eq "ANY") && $qname eq "www.example.com") {
  56                 print STDERR "$$ Sent CNAME records\n";
  57                 print "DATA     $bits   $auth   $qname  $qclass CNAME   3600    -1      webserver.example.com\n";
  58         }
  59         if(($qtype eq "MX" || $qtype eq "ANY") && $qname eq "example.com") {
  60                 print STDERR "$$ Sent MX records\n";
  61                 print "DATA     $bits   $auth   $qname  $qclass MX      3600    -1      25      smtp.powerdns.com\n";
  62         }
  63
  64
  65         print STDERR "$$ End of data\n";
  66         print "END\n";
  67 }
  68