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54 lines
1.3 KiB
Bash
54 lines
1.3 KiB
Bash
#!/bin/bash
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#
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# Parses DHCP options from openvpn to update resolv.conf
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# To use set as 'up' and 'down' script in your openvpn *.conf:
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# up /etc/openvpn/update-resolv-conf
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# down /etc/openvpn/update-resolv-conf
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#
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# Used snippets of resolvconf script by Thomas Hood <jdthood@yahoo.co.uk>
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# and Chris Hanson
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# Licensed under the GNU GPL. See /usr/share/common-licenses/GPL.
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#
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# 05/2006 chlauber@bnc.ch
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#
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# Example envs set from openvpn:
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# foreign_option_1='dhcp-option DNS 193.43.27.132'
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# foreign_option_2='dhcp-option DNS 193.43.27.133'
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# foreign_option_3='dhcp-option DOMAIN be.bnc.ch'
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[ -x /usr/sbin/resolvconf ] || exit 0
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case $script_type in
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up)
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for optionname in ${!foreign_option_*} ; do
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option="${!optionname}"
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echo $option
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part1=$(echo "$option" | cut -d " " -f 1)
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if [ "$part1" == "dhcp-option" ] ; then
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part2=$(echo "$option" | cut -d " " -f 2)
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part3=$(echo "$option" | cut -d " " -f 3)
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if [ "$part2" == "DNS" ] ; then
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IF_DNS_NAMESERVERS="$IF_DNS_NAMESERVERS $part3"
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fi
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if [ "$part2" == "DOMAIN" ] ; then
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IF_DNS_SEARCH="$IF_DNS_SEARCH $part3"
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fi
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fi
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done
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R=""
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for SS in $IF_DNS_SEARCH ; do
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R="${R}search $SS
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"
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done
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for NS in $IF_DNS_NAMESERVERS ; do
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R="${R}nameserver $NS
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"
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done
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echo -n "$R" | /usr/sbin/resolvconf -a "${dev}.inet"
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;;
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down)
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/usr/sbin/resolvconf -d "${dev}.inet"
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;;
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esac
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