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57 lines
1.4 KiB
Bash
Executable File
57 lines
1.4 KiB
Bash
Executable File
#!/usr/bin/env bash
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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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[ ! -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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#delete any previous entries from the dhcp hosts file
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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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#put in the new entry
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echo "$1,$2,$3,infinite" >>/etc/dhcphosts.txt
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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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# send SIGHUP to dnsmasq to reload /etc/hosts /etc/dhcphosts.txt
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# this will not reload /etc/dnsmasq.conf
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kill -s 1 $pid
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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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