[Dnssec-tools-cvs] dnssec-tools/tools/linux-ifup-dyn-dns ifup-dyndns,NONE,1.1

[Wes H. <har...@us...>]

Update of /cvsroot/dnssec-tools/dnssec-tools/tools/linux-ifup-dyn-dns
In directory sc8-pr-cvs1.sourceforge.net:/tmp/cvs-serv9050

Added Files:
	ifup-dyndns 
Log Message:
A linux init script to register dynamic dns hosts

--- NEW FILE: ifup-dyndns ---
#!/bin/sh

#
# meant to be installed as /sbin/ifup-local or called from there
# [ a patch should be sent to the initscripts maintainers to add this ]
#
#
# Calling arguments available in ifcfg-DEV:
#
# UPDATEDNS=yes
#    enables this script to do its thing
#
# NSUPDATE=nsupdate
#    The name (or path) to the nsupdate binary
#
# UPDATEDNSNAME=NAME
#    updates this dns NAME.  If not specified, the output of
#    hostname will be used.
#
# If a secure (via a TSIG key) transaction is to be used, then one of
# these should be used:
#
#   UPDATEDNSKEY=DNSKEY
#      Should be a DNSKEY value suitable for passing to nsupdate -y
#      DNSKEY
#
#   UPDATEDNSKEYFILE=KEYFILE
#      Should point to a dnssec (TSIG) key file if one should be used.
#      Note that both the .key and .private files must be present, but
#      just the .key file needs to be pointed to.
#
#   Note: if a ifcfg-DEV.key and .private file are found, it will
#   default to trying to use these if you don't specify one of
#   these options
#
#   KEYARGS=args
#      Specifies your own keying arguments passed to nsupdate.
#      Overrides the above arguments.
#

cd /etc/sysconfig/network-scripts
. network-functions

[ -f ../network ] && . ../network

DEVICE=$1
CONFIG=/etc/sysconfig/network-scripts/ifcfg-$DEVICE
source_config

if [ "$UPDATEDNS" ] ; then
  #
  # defaults
  #
  [ -z "$UPDATEDNSNAME" ] && UPDATEDNSNAME=`hostname`
  [ -z "$UPDATEDNSTTL" ] && UPDATEDNSTTL=600
  [ -z "$NSUPDATE" ] && NSUPDATE="nsupdate"

  #
  # get the devices ip address
  #
  IPADDR=`LANG= LC_ALL= ifconfig ${DEVICE} | grep 'inet addr' |
        awk -F: '{ print $2 } ' | awk '{ print $1 }'`

  #
  # see if a key or a key file has been specified or is found
  #
  if [ -z "$KEYARGS" ]; then
    if [ -n "$UPDATEDNSKEYFILE" ] ; then
      KEYARGS="-k $UPDATEDNSKEYFILE"
    elif [ -n "$UPDATEDNSKEY" ] ; then
      KEYARGS="-y $UPDATEDNSKEY"
    elif [ -f ${CONFIG}.key ] ; then
      KEYARGS="-k ${CONFIG}.key"
    fi
  fi

  #
  # perform the update
  #   - delete the old records for the name
  #   - adds the new address to the now empty record name
  #
  $NSUPDATE $KEYARGS <<EOF
update delete ${UPDATEDNSNAME}.
update add ${UPDATEDNSNAME}. $UPDATEDNSTTL IN A $IPADDR
send
EOF

fi