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86 lines
2.3 KiB
Bash
Executable File
86 lines
2.3 KiB
Bash
Executable File
#!/usr/bin/env bash
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# Licensed to the Apache Software Foundation (ASF) under one
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# or more contributor license agreements. See the NOTICE file
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# distributed with this work for additional information
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# regarding copyright ownership. The ASF licenses this file
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# to you under the Apache License, Version 2.0 (the
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# "License"); you may not use this file except in compliance
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# with the License. You may obtain a copy of the License at
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#
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# http://www.apache.org/licenses/LICENSE-2.0
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#
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# Unless required by applicable law or agreed to in writing,
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# software distributed under the License is distributed on an
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# "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
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# KIND, either express or implied. See the License for the
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# specific language governing permissions and limitations
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# under the License.
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# edithosts.sh -- edit the dhcphosts file on the routing domain
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# $1 : the mac address
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# $2 : the associated ip address
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# $3 : the hostname
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wait_for_dnsmasq () {
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local _pid=$(pidof dnsmasq)
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for i in 0 1 2 3 4 5 6 7 8 9 10
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do
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sleep 1
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_pid=$(pidof dnsmasq)
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[ "$_pid" != "" ] && break;
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done
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[ "$_pid" != "" ] && return 0;
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echo "edithosts: timed out waiting for dnsmasq to start"
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return 1
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}
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command -v dhcp_release > /dev/null 2>&1
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no_dhcp_release=$?
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[ ! -f /etc/dhcphosts.txt ] && touch /etc/dhcphosts.txt
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[ ! -f /var/lib/misc/dnsmasq.leases ] && touch /var/lib/misc/dnsmasq.leases
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sed -i /$1/d /etc/dhcphosts.txt
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sed -i /$2,/d /etc/dhcphosts.txt
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sed -i /$3,/d /etc/dhcphosts.txt
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echo "$1,$2,$3,infinite" >>/etc/dhcphosts.txt
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#release previous dhcp lease if present
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if [ $no_dhcp_release -eq 0 ]
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then
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dhcp_release lo $2 $(grep $2 $DHCP_LEASES | awk '{print $2}') > /dev/null 2>&1
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fi
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#delete leases to supplied mac and ip addresses
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sed -i /$1/d /var/lib/misc/dnsmasq.leases
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sed -i /"$2 "/d /var/lib/misc/dnsmasq.leases
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sed -i /"$3 "/d /var/lib/misc/dnsmasq.leases
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#put in the new entry
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echo "0 $1 $2 $3 *" >> /var/lib/misc/dnsmasq.leases
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#edit hosts file as well
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sed -i /"$2 "/d /etc/hosts
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sed -i /"$3"/d /etc/hosts
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echo "$2 $3" >> /etc/hosts
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# make dnsmasq re-read files
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pid=$(pidof dnsmasq)
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if [ "$pid" != "" ]
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then
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# use SIGHUP to avoid service outage if dhcp_release is available.
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if [ $no_dhcp_release -eq 0 ]
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then
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kill -HUP $pid
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else
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service dnsmasq restart
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fi
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else
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service dnsmasq start
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wait_for_dnsmasq
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fi
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exit $?
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