100 lines
3.6 KiB
Bash
Executable File
100 lines
3.6 KiB
Bash
Executable File
#!/bin/sh
|
|
# Copyright 2007 Roy Marples
|
|
# All rights reserved
|
|
|
|
# Redistribution and use in source and binary forms, with or without
|
|
# modification, are permitted provided that the following conditions
|
|
# are met:
|
|
# 1. Redistributions of source code must retain the above copyright
|
|
# notice, this list of conditions and the following disclaimer.
|
|
# 2. Redistributions in binary form must reproduce the above copyright
|
|
# notice, this list of conditions and the following disclaimer in the
|
|
# documentation and/or other materials provided with the distribution.
|
|
#
|
|
# THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
|
|
# ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
|
|
# IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
|
|
# ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
|
|
# FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
|
|
# DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
|
|
# OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
|
|
# HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
|
|
# LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
|
|
# OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
|
|
# SUCH DAMAGE.
|
|
|
|
# Setup our resolv.conf
|
|
# Vitally important that we use the domain entry in resolv.conf so we
|
|
# can setup the nameservers are for the domain ONLY in resolvconf if
|
|
# we're using a decent dns cache/forwarder like dnsmasq and NOT nscd/libc.
|
|
# nscd/libc users will get the VPN nameservers before their other ones
|
|
# and will use the first one that responds - maybe the LAN ones?
|
|
# non resolvconf users just the the VPN resolv.conf
|
|
|
|
# FIXME:- if we have >1 domain, then we have to use search :/
|
|
# We need to add a flag to resolvconf to say
|
|
# "these nameservers should only be used for the listed search domains
|
|
# if other global nameservers are present on other interfaces"
|
|
# This however, will break compatibility with Debians resolvconf
|
|
# A possible workaround would be to just list multiple domain lines
|
|
# and try and let resolvconf handle it
|
|
|
|
PATH=$PATH:/usr/local/sbin
|
|
|
|
NS=
|
|
DOMAIN=
|
|
SEARCH=
|
|
i=1
|
|
while true; do
|
|
eval opt=\$foreign_option_${i}
|
|
[ -z "${opt}" ] && break
|
|
if [ "${opt}" != "${opt#dhcp-option DOMAIN *}" ]; then
|
|
if [ -z "${DOMAIN}" ]; then
|
|
DOMAIN="${opt#dhcp-option DOMAIN *}"
|
|
else
|
|
SEARCH="${SEARCH:+ }${opt#dhcp-option DOMAIN *}"
|
|
fi
|
|
elif [ "${opt}" != "${opt#dhcp-option DNS *}" ]; then
|
|
NS="${NS}nameserver ${opt#dhcp-option DNS *}\n"
|
|
fi
|
|
i=$((${i} + 1))
|
|
done
|
|
|
|
if [ -n "${NS}" ]; then
|
|
DNS="# Generated by openvpn for interface ${dev}\n"
|
|
if [ -n "${SEARCH}" ]; then
|
|
DNS="${DNS}search ${DOMAIN} ${SEARCH}\n"
|
|
else
|
|
DNS="${DNS}domain ${DOMAIN}\n"
|
|
fi
|
|
DNS="${DNS}${NS}"
|
|
if type resolvconf >/dev/null 2>&1; then
|
|
printf "${DNS}" | resolvconf -a "${dev}"
|
|
else
|
|
# Preserve the existing resolv.conf
|
|
if [ -e /etc/resolv.conf ]; then
|
|
cp -p /etc/resolv.conf /etc/resolv.conf-"${dev}".sv
|
|
fi
|
|
(umask 022; printf "${DNS}" > /etc/resolv.conf)
|
|
fi
|
|
fi
|
|
|
|
# Below section is OpenRC specific
|
|
# Quick summary - our init scripts are re-entrant and set the SVCNAME env var
|
|
# as we could have >1 openvpn service
|
|
|
|
# If we have a service specific script, run this now
|
|
[ -x "${SVCNAME}"-up.sh ] && "${SVCNAME}"-up.sh
|
|
|
|
# Re-enter the init script to start any dependant services
|
|
service=/etc/init.d/"${SVCNAME}"
|
|
[ ! -x "${service}" ] && service=/usr/local/etc/init.d/"${SVCNAME}"
|
|
if [ -x "${service}" ]; then
|
|
if ! "${service}" --quiet status; then
|
|
export IN_BACKGROUND=true
|
|
"${service}" --quiet start
|
|
fi
|
|
fi
|
|
|
|
exit 0
|