59 lines
1.3 KiB
Bash
Executable File
59 lines
1.3 KiB
Bash
Executable File
#!/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 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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# Example envs set from openvpn:
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#
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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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#
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[ -x /sbin/resolvconf ] || exit 0
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[ "$script_type" ] || exit 0
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[ "$dev" ] || exit 0
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split_into_parts()
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{
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part1="$1"
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part2="$2"
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part3="$3"
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}
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case "$script_type" in
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up)
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NMSRVRS=""
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SRCHS=""
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for optionvarname in ${!foreign_option_*} ; do
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option="${!optionvarname}"
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echo "$option"
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split_into_parts $option
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if [ "$part1" = "dhcp-option" ] ; then
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if [ "$part2" = "DNS" ] ; then
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NMSRVRS="${NMSRVRS:+$NMSRVRS }$part3"
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elif [ "$part2" = "DOMAIN" ] ; then
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SRCHS="${SRCHS:+$SRCHS }$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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[ "$SRCHS" ] && R="search $SRCHS
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"
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for NS in $NMSRVRS ; do
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R="${R}nameserver $NS
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"
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done
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echo -n "$R" | /sbin/resolvconf -a "${dev}.openvpn"
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;;
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down)
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/sbin/resolvconf -d "${dev}.openvpn"
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;;
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esac
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