====== Convert tinydns data format to zone file format described by RFC 1035 (bind-style) ======
This simple script converts the content of tinydns' data file into separate zone files - one zone file per domain. The major conversion is done by the axfrdns program which is part of [[https://cr.yp.to/djbdns.html|djbdns]].


===== Requirements =====
  * Access to tinydns' data file - the script below assumes its location in /etc/tinydns/root. If it is located in a different path simply adjust the script.
  * [[https://cr.yp.to/djbdns/axfrdns.html|axfrdns program]] running

===== Setting up axfrdns =====
Use [[https://cr.yp.to/djbdns/axfrdns-conf.html|axfrdns-conf]]. Make sure that the user account //gaxfrdns// and the group //gdnslog// exists. The following lines will set up axfrdns to listen on 127.0.0.1 and to control the process via daemontools.
  axfrdns-conf gaxfrdns gdnslog /etc/axfrdns /etc/tinydns 127.0.0.1
  ln -s /etc/axfrdns /etc/service
  
===== Conversion Script =====
  #!/bin/bash
  
  set -e
  cd /etc/tinydns/root
  make
  mkdir -p zone
  SERIAL=$(date +%Y%m%d)01
  grep "^\." data | cut -d: -f1 | uniq | cut -c2- | while read domain; do
     echo -e "; vim\\x3a ts=8" > zone/$domain.zone
     echo -e '$TTL 86400\n' >> zone/$domain.zone
     dig +nostats +onesoa +nocmd @127.0.0.1 AXFR $domain | \
     sed -e "s/\(.*\)2560\(.*SOA\t[^ ]\+ [^ ]\+ \)[0-9 ]\+/\1259200\2(\n\t$SERIAL ; serial\n\t3H         ; refresh\n\t1H         ; retry\n\t3W         ; expire\n\t600)       ; ttl neg caching/" >> zone/$domain.zone
  done