#!/bin/sh

: ${pdns_port:='1053'}
: ${pdns_distributor_threads:='3'}
: ${pdns_receiver_threads:="$nproc"}
: ${pdns_allow_axfr_ips:='127.0.0.1/8'}
: ${pdns_cache_ttl:='30'}
: ${pdns_query_cache_ttl:='20'}
: ${pdns_negquery_cache_ttl:='60'}

pdns_conf_dir=/usr/local/etc/pdns
pdns_runtime_dir=/var/run/pdns
pdns_soa_record="sOARecord: ${fqdn} root.${domain} 0 10800 3600 604800 3600"
pdns_ns_records=$(printf "nSRecord: %s.${domain}\n" $idm_hostnames)
pdns_user=pdns

# Install PowerDNS.
pkg install -y powerdns

# Generate PowerDNS configuration.
install_template -m 0644 "${pdns_conf_dir}/pdns.conf"

# Enable PowerDNS and start it.
sysrc -v pdns_enable=YES
service pdns restart

# Create initial IDM DNS records.
if is_primary_server; then
  # ou=dns,dc=example,dc=com
  ldap_add "$dns_basedn" <<EOF
objectClass: organizationalUnit
ou: $(ldap_rdn_value "$dns_basedn")
EOF

  # Forward DNS zone
  # dc=idm.example.com,ou=dns,dc=example,dc=com
  ldap_add "dc=${domain},${dns_basedn}" <<EOF
objectClass: dNSDomain
objectClass: domainRelatedObject
dc: ${domain}
${pdns_soa_record}
${pdns_ns_records}
$(echo "$idm_server_list" | awk '{print "aRecord: "$2}')
associatedDomain: ${domain}
EOF

  # Reverse DNS zone(s)
  # dc=0.168.192.in-addr.arpa,ou=dns,dc=example.com
  for zone in $reverse_dns_zones; do
    ldap_add "dc=${zone},${dns_basedn}" <<EOF
objectClass: dNSDomain
objectClass: domainRelatedObject
${pdns_soa_record}
${pdns_ns_records}
associatedDomain: ${zone}
EOF
  done

  # LDAP SRV record
  ldap_add "dc=_ldap._tcp,dc=${domain},${dns_basedn}" <<EOF
objectClass: dNSDomain2
objectClass: domainRelatedObject
associatedDomain: _ldap._tcp.${domain}
$(printf "sRVRecord: 0 100 389 %s.${domain}\n" ${idm_hostnames})
EOF

  # LDAPS SRV record
  ldap_add "dc=_ldaps._tcp,dc=${domain},${dns_basedn}" <<EOF
objectClass: dNSDomain2
objectClass: domainRelatedObject
associatedDomain: _ldaps._tcp.${domain}
$(printf "sRVRecord: 0 100 636 %s.${domain}\n" ${idm_hostnames})
EOF

  # Kerberos SRV record (UDP)
  ldap_add "dc=_kerberos._udp,dc=${domain},${dns_basedn}" <<EOF
objectClass: dNSDomain2
objectClass: domainRelatedObject
associatedDomain: _kerberos._udp.${domain}
$(printf "sRVRecord: 0 100 88 %s.${domain}\n" ${idm_hostnames})
EOF

  # Kerberos SRV record (TCP)
  ldap_add "dc=_kerberos._tcp,dc=${domain},${dns_basedn}" <<EOF
objectClass: dNSDomain2
objectClass: domainRelatedObject
associatedDomain: _kerberos._tcp.${domain}
$(printf "sRVRecord: 0 100 88 %s.${domain}\n" ${idm_hostnames})
EOF

  # Kadmin SRV record
  ldap_add "dc=_kerberos-adm._tcp,dc=${domain},${dns_basedn}" <<EOF
objectClass: dNSDomain2
objectClass: domainRelatedObject
associatedDomain: _kerberos-adm._tcp.${domain}
$(printf "sRVRecord: 0 100 749 %s.${domain}\n" ${idm_hostnames})
EOF

  # Kpasswd SRV record
  ldap_add "dc=_kpasswd._udp,dc=${domain},${dns_basedn}" <<EOF
objectClass: dNSDomain2
objectClass: domainRelatedObject
associatedDomain: _kpasswd._udp.${domain}
$(printf "sRVRecord: 0 100 464 %s.${domain}\n" ${idm_hostnames})
EOF

  # Kerberos realm TXT record
  ldap_add "dc=_kerberos,dc=${domain},${dns_basedn}" <<EOF
objectClass: dNSDomain2
objectClass: domainRelatedObject
associatedDomain: _kerberos.${domain}
tXTRecord: ${realm}
EOF
fi