a7e494963d
git-svn-id: svn://svn.openwrt.org/openwrt/packages@17046 3c298f89-4303-0410-b956-a3cf2f4a3e73
81 lines
1.8 KiB
Bash
81 lines
1.8 KiB
Bash
#!/bin/sh
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# ip-to-devinfo - IP (through arping or ping and arp cache) to MAC IEEE and
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# custom information
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# Copyright (C) 2009 Daniel Dickinson
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# This program is free software; you can redistribute it and/or modify
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# it under the terms of the GNU General Public License as published by
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# the Free Software Foundation; either version 2 of the License, or
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# (at your option) any later version.
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# This program is distributed in the hope that it will be useful,
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# but WITHOUT ANY WARRANTY; without even the implied warranty of
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# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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# GNU General Public License for more details.
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# You should have received a copy of the GNU General Public License along
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# with this program; if not, write to the Free Software Foundation, Inc.,
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# 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
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ARP=arp
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MACTODEV=mac-to-devinfo
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usage() {
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echo "Usage: $0 [-i interface] [-x port] IP-address"
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}
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if [ "$1" == "-i" ]; then
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INTERFACE="$2"
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if [ -z "$INTERFACE" ]; then
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echo "-i without interface"
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usage
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exit 1
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fi
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shift
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shift
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fi
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if [ "$1" == "-x" ]; then
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PORT="-x $2"
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if [ -z "$PORT" ]; then
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echo "-x without the port"
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usage
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exit 1
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fi
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shift
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shift
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fi
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IP="$1"
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shift
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if [ -z "$IP" ]; then
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echo "Must specify IP address"
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usage
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exit 1
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fi
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if [ ! -x "$(which $ARP)" ]; then
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do_arp() {
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cat /proc/net/arp
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}
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ARPMACFIELD=4
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else
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do_arp() {
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$ARP -n
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}
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ARPMACFIELD=3
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fi
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if [ -z "$INTERFACE" ]; then
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ping -q -c 2 $IP >/dev/null
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MAC=$(do_arp|grep "$IP "|tr -s \ | cut -f$ARPMACFIELD -d\ )
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else
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MAC=$(arping -f -c 5 -I $INTERFACE $IP | grep 'Unicast reply from' | cut -f2 -d \[ | cut -f1 -d\])
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fi
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$MACTODEV $PORT $MAC
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