#!/bin/bash
# **** License ****
# Version: VPL 1.0
#
# The contents of this file are subject to the Vyatta Public License
# Version 1.0 ("License"); you may not use this file except in
# compliance with the License. You may obtain a copy of the License at
# http://www.vyatta.com/vpl
#
# Software distributed under the License is distributed on an "AS IS"
# basis, WITHOUT WARRANTY OF ANY KIND, either express or implied. See
# the License for the specific language governing rights and limitations
# under the License.
#
# This code was originally developed by Vyatta, Inc.
# Portions created by Vyatta are Copyright (C) 2007 Vyatta, Inc.
# All Rights Reserved.
#
# Author: Tom Grennan
# Date: 2007
#
# **** End License ****

test -f /etc/default/vyatta && source /etc/default/vyatta
: ${vyatta_bindir:=/opt/vyatta/bin}

shopt -s extglob
shopt -s nullglob

declare progname=${0##*/}
declare -a itfs

_usage ()
{
    cat <<-EOF
	$progname
	$progname INTERFACE
	$progname INTERFACE physical
	$progname INTERFACE vif VIF
	$progname INTERFACE vif VIF physical
	EOF
}

_error ()
{
    ecode=$1
    shift
    echo $@
    if [ $ecode -eq 1 ] ; then
        echo
        _usage
    fi
    exit $ecode
}

_show_interfaces_ethernet_physical ()
{
    if type -t ethtool &>/dev/null ; then
	for eth ; do
	    sudo ethtool $eth
	    echo
	done
    fi
}

if [ $# -gt 0 ] ; then
    if [[ $1 == --+(usage|help) ]] ; then
	_usage
	exit 0
    elif [[ $1 != +(eth|vmnet)*([[:digit:]]) ]] ; then
	_error 2 \""$1"\" is not an ethernet device name\!
    elif ! test -d /sys/class/net/$1 ; then
	_error 2 \""$1"\" no such ethernet interface\!
    else
	eth=$1
	shift
    fi
    if [[ $# -gt 0 && $1 == vif ]] ; then
	shift
	if [ $# -gt 0 ] ; then
	    vif=$1 ; shift
	    itf=${eth}.${vif}
	    test -d /sys/class/net/$itf || \
		_error 2 \""$vif"\" no such vif for $eth\!
	else
	    _error 1 Missing VIF parameter\!
	fi
    else
	itf=$eth
    fi
    itfs=( $itf )
else
    declare -a full_eths=( /sys/class/net/+(eth|vmnet)* )
    test ${#full_eths[@]} -gt 0 || \
	_error 2 No ethernet interfaces\!
    itfs=( ${full_eths[@]##*/} )
fi

case "$1" in
    physical )		cmd=_show_interfaces_ethernet_physical ;;
    "" | statistics )	cmd=$vyatta_bindir/show_interfaces_statistics ;;
    name )		cmd=echo ;;
    * )			_error 1 \""$1"\" is an invalid parameter\! ;;
esac

eval $cmd ${itfs[@]##*/}


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