74 lines
2 KiB
Bash
Executable file
74 lines
2 KiB
Bash
Executable file
#!/bin/bash
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# Mac name-resolution updater based on @cl's script here:
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# https://blog.netnerds.net/2011/10/openvpn-update-client-dns-on-mac-os-x-using-from-the-command-line/
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# Openvpn envar parsing taken from the script in debian's openvpn package.
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# Smushed together and improved by @andrewgdotcom.
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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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[ "$script_type" ] || exit 0
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[ "$dev" ] || exit 0
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PATH=$PATH:/usr/sbin/
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NMSRVRS=()
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SRCHS=()
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# Get adapter list
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IFS=$'\n' read -d '' -ra adapters < <(networksetup -listallnetworkservices |grep -v denotes) || true
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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="$3"
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}
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update_all_dns()
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{
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for adapter in "${adapters[@]}"
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do
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echo updating dns for $adapter
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# set dns server to the vpn dns server
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if [[ "${SRCHS[@]}" ]]; then
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networksetup -setsearchdomains "$adapter" "${SRCHS[@]}"
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fi
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if [[ "${NMSRVRS[@]}" ]]; then
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networksetup -setdnsservers "$adapter" "${NMSRVRS[@]}"
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fi
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done
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}
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clear_all_dns()
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{
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for adapter in "${adapters[@]}"
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do
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echo updating dns for $adapter
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networksetup -setdnsservers "$adapter" empty
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networksetup -setsearchdomains "$adapter" empty
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done
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}
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case "$script_type" in
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up)
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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[@]} $part3)
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elif [ "$part2" = "DOMAIN" ] ; then
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SRCHS=(${SRCHS[@]} $part3)
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fi
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fi
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done
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update_all_dns
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;;
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down)
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clear_all_dns
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;;
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esac
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