source4/scripting/devel/rebuild_zone.sh

   1 #!/bin/sh
   2 # rebuild a zone file, adding all DCs
   3
   4 [ $# -eq 2 ] || {
   5         echo "rebuild_zone.sh <sam.ldb> <zonefile>"
   6         exit 1
   7 }
   8
   9 LDB="$1"
  10 ZFILE="$2"
  11
  12 dnshostname=$(bin/ldbsearch -H $LDB --scope=base -b '' dnsHostname | grep ^dns | cut -d' ' -f2)
  13 host=$(echo $dnshostname | cut -d. -f1)
  14 realm=$(echo $dnshostname | cut -d. -f2-)
  15 GUIDs=$(bin/ldbsearch -H $LDB objectclass=ntdsdsa objectguid --cross-ncs | grep ^objectGUID | cut -d' ' -f2)
  16 DOMAINGUID=$(bin/ldbsearch -H $LDB --scope=base objectguid | grep ^objectGUID | cut -d' ' -f2)
  17
  18 dcname()
  19 {
  20         GUID=$1
  21         echo $(bin/ldbsearch -H $LDB objectguid=$GUID dn --cross-ncs | grep CN=NTDS.Settings | cut -d, -f2 | cut -d= -f2)
  22 }
  23
  24 getip()
  25 {
  26         NAME=$1
  27         ret=$(nmblookup $NAME | egrep '^[0-9]' | head -1 | cut -d' ' -f1)
  28         test -n "$ret" || {
  29                 echo "Unable to find IP for $NAME. Using XX.XX.XX.XX. Please edit" 1>&2
  30                 echo "XX.XX.XX.XX"
  31         }
  32         echo $ret
  33 }
  34
  35 echo "Generating header for host $host in realm $realm"
  36 cat <<EOF >$ZFILE
  37 ; -*- zone -*-
  38 ; generated by rebuild_zone.sh
  39 \$ORIGIN $realm.
  40 \$TTL 1W
  41 @               IN SOA  @   hostmaster (
  42                                 $(date +%Y%m%d%H)   ; serial
  43                                 2D              ; refresh
  44                                 4H              ; retry
  45                                 6W              ; expiry
  46                                 1W )            ; minimum
  47                         IN NS   $host
  48
  49 EOF
  50
  51 for GUID in $GUIDs; do
  52         dc=$(dcname $GUID)
  53         echo "Generating IP for DC $dc"
  54         ip=$(getip $dc)
  55         test -n "$ip" || exit 1
  56         echo "  IN A $ip" >>$ZFILE
  57 done
  58
  59 echo "; IP Addresses" >>$ZFILE
  60 for GUID in $GUIDs; do
  61         dc=$(dcname $GUID)
  62         ip=$(getip $dc)
  63         test -n "$ip" || exit 1
  64         echo "$dc       IN A $ip" >>$ZFILE
  65 done
  66
  67 for GUID in $GUIDs; do
  68         dc=$(dcname $GUID)
  69         ip=$(getip $dc)
  70         test -n "$ip" || exit 1
  71         echo "Generating zone body for DC $dc with IP $ip"
  72         cat <<EOF >>$ZFILE
  73 ;
  74 ; Entries for $dc
  75 gc._msdcs               IN A    $ip
  76 $GUID._msdcs    IN CNAME        $dc
  77 _gc._tcp                IN SRV 0 100 3268       $dc
  78 _gc._tcp.Default-First-Site-Name._sites IN SRV 0 100 3268       $dc
  79 _ldap._tcp.gc._msdcs    IN SRV 0 100 389        $dc
  80 _ldap._tcp.Default-First-Site-Name._sites.gc._msdcs     IN SRV 0 100 389 $dc
  81 _ldap._tcp              IN SRV 0 100 389        $dc
  82 _ldap._tcp.dc._msdcs    IN SRV 0 100 389        $dc
  83 _ldap._tcp.pdc._msdcs   IN SRV 0 100 389        $dc
  84 _ldap._tcp.$DOMAINGUID.domains._msdcs           IN SRV 0 100 389 $dc
  85 _ldap._tcp.Default-First-Site-Name._sites               IN SRV 0 100 389 $dc
  86 _ldap._tcp.Default-First-Site-Name._sites.dc._msdcs     IN SRV 0 100 389 $dc
  87 _kerberos._tcp          IN SRV 0 100 88         $dc
  88 _kerberos._tcp.dc._msdcs        IN SRV 0 100 88 $dc
  89 _kerberos._tcp.Default-First-Site-Name._sites   IN SRV 0 100 88 $dc
  90 _kerberos._tcp.Default-First-Site-Name._sites.dc._msdcs IN SRV 0 100 88 $dc
  91 _kerberos._udp          IN SRV 0 100 88         $dc
  92 _kerberos-master._tcp           IN SRV 0 100 88         $dc
  93 _kerberos-master._udp           IN SRV 0 100 88         $dc
  94 _kpasswd._tcp           IN SRV 0 100 464        $dc
  95 _kpasswd._udp           IN SRV 0 100 464        $dc
  96 EOF
  97 done
  98
  99 cat <<EOF >>$ZFILE
 100
 101 ; kerberos hack
 102 _kerberos               IN TXT  $(echo $realm | tr [a-z] [A-Z])
 103 EOF
 104
 105 echo "Rebuilt zone file $ZFILE OK"
 106
 107 echo "Reloading bind config"
 108 PATH="/usr/sbin:$PATH" rndc reload
 109 exit 0