net_help.sh

   1 #!/usr/bin/bash
   2 #
   3 # CDDL HEADER START
   4 #
   5 # The contents of this file are subject to the terms of the
   6 # Common Development and Distribution License, Version 1.0 only
   7 # (the "License").  You may not use this file except in compliance
   8 # with the License.
   9 #
  10 # You can obtain a copy of the license at usr/src/OPENSOLARIS.LICENSE
  11 # or http://www.opensolaris.org/os/licensing.
  12 # See the License for the specific language governing permissions
  13 # and limitations under the License.
  14 #
  15 # When distributing Covered Code, include this CDDL HEADER in each
  16 # file and include the License file at usr/src/OPENSOLARIS.LICENSE.
  17 # If applicable, add the following below this CDDL HEADER, with the
  18 # fields enclosed by brackets "[]" replaced with your own identifying
  19 # information: Portions Copyright [yyyy] [name of copyright owner]
  20 #
  21 # CDDL HEADER END
  22 #
  23 #
  24 # Copyright 2012 OmniTI Computer Consulting, Inc.  All rights reserved.
  25 # Use is subject to license terms.
  26 #
  27
  28 Ether(){
  29   /sbin/ifconfig -a | \
  30     /usr/bin/awk '/UP/{if($2 !~ /LOOPBACK/){iface=$1;}} /ether/{if(iface){print $2; exit;}}' | \
  31     /bin/tr '[:lower:]' '[:upper:]' | \
  32     /bin/sed -e 's/^/ 0/g;s/:/ 0/g; s/0\([0-9A-F][0-9A-F]\)/\1/g; s/ //g;'
  33 }
  34
  35 UseDNS() {
  36   server=$1; shift
  37   domain=$1
  38   EnableDNS $domain $*
  39   SetDNS $server
  40 }
  41
  42 EnableDNS() {
  43   domain=$1
  44   if [ ! -z $domain ]; then
  45     cat <<EOF > $ALTROOT/etc/resolv.conf
  46 domain $domain
  47 search $*
  48 EOF
  49   fi
  50   sed -I -e 's/^hosts:.*/hosts: files dns/;' $ALTROOT/etc/nsswitch.conf
  51   sed -I -e 's/^ipnodes:.*/ipnodes: files dns/;' $ALTROOT/etc/nsswitch.conf
  52 }
  53
  54 SetDNS() {
  55 # NOTE: If the nsswitch.conf file specifies DNS in a manner other than:
  56 # "files dns", setting EnableDNS will have to become more sophisticated.
  57   /usr/bin/grep -c 'files dns' $ALTROOT/etc/nsswitch.conf 2> /dev/null > /dev/null || EnableDNS
  58
  59   for srv in $*; do
  60     echo nameserver $srv >> $ALTROOT/etc/resolv.conf
  61   done
  62 }