101 lines
2.8 KiB
Bash
Executable file
101 lines
2.8 KiB
Bash
Executable file
#!/bin/sh
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# Copyright (c) 2006-2007 Gentoo Foundation
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# Distributed under the terms of the GNU General Public License v2
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# Contributed by Roy Marples (uberlord@gentoo.org)
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# Setup our resolv.conf
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# Vitally important that we use the domain entry in resolv.conf so we
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# can setup the nameservers are for the domain ONLY in resolvconf if
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# we're using a decent dns cache/forwarder like dnsmasq and NOT nscd/libc.
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# nscd/libc users will get the VPN nameservers before their other ones
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# and will use the first one that responds - maybe the LAN ones?
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# non resolvconf users just the the VPN resolv.conf
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# FIXME:- if we have >1 domain, then we have to use search :/
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# We need to add a flag to resolvconf to say
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# "these nameservers should only be used for the listed search domains
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# if other global nameservers are present on other interfaces"
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# This however, will break compatibility with Debians resolvconf
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# A possible workaround would be to just list multiple domain lines
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# and try and let resolvconf handle it
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min_route() {
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local n=1
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local m
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local r
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eval m="\$route_metric_$n"
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while [ -n "${m}" ]; do
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if [ -z "$r" ] || [ "$r" -gt "$m" ]; then
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r="$m"
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fi
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n="$(($n+1))"
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eval m="\$route_metric_$n"
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done
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echo "$r"
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}
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if [ "${PEER_DNS}" != "no" ]; then
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NS=
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DOMAIN=
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SEARCH=
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i=1
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while true ; do
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eval opt=\$foreign_option_${i}
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[ -z "${opt}" ] && break
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if [ "${opt}" != "${opt#dhcp-option DOMAIN *}" ] ; then
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if [ -z "${DOMAIN}" ] ; then
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DOMAIN="${opt#dhcp-option DOMAIN *}"
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else
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SEARCH="${SEARCH}${SEARCH:+ }${opt#dhcp-option DOMAIN *}"
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fi
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elif [ "${opt}" != "${opt#dhcp-option DNS *}" ] ; then
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NS="${NS}nameserver ${opt#dhcp-option DNS *}\n"
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fi
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i=$((${i} + 1))
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done
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if [ -n "${NS}" ] ; then
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DNS="# Generated by openvpn for interface ${dev}\n"
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if [ -n "${SEARCH}" ] ; then
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DNS="${DNS}search ${DOMAIN} ${SEARCH}\n"
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elif [ -n "${DOMAIN}" ]; then
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DNS="${DNS}domain ${DOMAIN}\n"
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fi
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DNS="${DNS}${NS}"
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if [ -x /sbin/resolvconf ] ; then
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metric="$(min_route)"
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printf "${DNS}" | /sbin/resolvconf -a "${dev}" ${metric:+-m ${metric}}
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else
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# Preserve the existing resolv.conf
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if [ -e /etc/resolv.conf ] ; then
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cp /etc/resolv.conf /etc/resolv.conf-"${dev}".sv
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fi
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printf "${DNS}" > /etc/resolv.conf
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chmod 644 /etc/resolv.conf
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fi
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fi
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fi
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# Below section is Gentoo specific
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# Quick summary - our init scripts are re-entrant and set the SVCNAME env var
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# as we could have >1 openvpn service
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if [ -n "${SVCNAME}" ]; then
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# If we have a service specific script, run this now
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if [ -x /etc/openvpn/"${SVCNAME}"-up.sh ] ; then
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/etc/openvpn/"${SVCNAME}"-up.sh "$@"
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fi
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# Re-enter the init script to start any dependant services
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if ! /etc/init.d/"${SVCNAME}" --quiet status ; then
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export IN_BACKGROUND=true
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/etc/init.d/${SVCNAME} --quiet start
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fi
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fi
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exit 0
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# vim: ts=4 :
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