#! /bin/bash
# Author: Stephen Hemminger
# Date: 2009
# Description: reload portion of configuration

# **** License ****
# This program is free software; you can redistribute it and/or modify
# it under the terms of the GNU General Public License version 2 as
# published by the Free Software Foundation.
#
# This program is distributed in the hope that it will be useful, but
# WITHOUT ANY WARRANTY; without even the implied warranty of
# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
# General Public License for more details.
#
# This code was originally developed by Vyatta, Inc.
# Portions created by Vyatta are Copyright (C) 2006, 2007, 2008 Vyatta, Inc.
# All Rights Reserved.
# **** End License ****

if [ $# -eq 0 ]; then
   echo "Usage: $0 {bgp|ospf|rip|ripng}"
   exit 1
fi

if [ $EUID -ne 0 ]; then
   echo "Must be root"
   exit 1
fi

vyatta_cfg=/opt/vyatta/config/active
daemon=$1
path=$vyatta_cfg/protocols/$daemon

# No point in reloading if that portion of config doesn't exist
if [ ! -d $path ];  then
   echo "$path does not exist"
   exit 1
fi

# Begin reloading transaction
/opt/vyatta/sbin/vyatta-cfg-cmd-wrapper begin || exit 1

# In case of error undo
trap "/opt/vyatta/sbin/vyatta-cfg-cmd-wrapper end" EXIT HUP INT QUIT TERM

# Save current configuration
tmp=/tmp/${daemon}-restart.$$
/opt/vyatta/sbin/vyatta-save-config.pl $tmp || exit 1

# Erase portion of active configuration for that protocol
rm -fr $path

# special case for interface configuration
case $daemon in
    rip|ospf) find $vyatta_cfg/interfaces -type d -name $daemon \
	-exec rm -fr '{}' \;
	;;
esac

# Reload causing configuration to activate - implies commit
/opt/vyatta/sbin/vyatta-load-config.pl $tmp || exit 1

# remove tmp file if successful
rm $tmp