diff options
Diffstat (limited to 'support')
| -rw-r--r-- | support/openvpn/README | 8 | ||||
| -rwxr-xr-x | support/openvpn/down.sh | 49 | ||||
| -rwxr-xr-x | support/openvpn/up.sh | 99 |
3 files changed, 156 insertions, 0 deletions
diff --git a/support/openvpn/README b/support/openvpn/README new file mode 100644 index 00000000..9ff435dd --- /dev/null +++ b/support/openvpn/README @@ -0,0 +1,8 @@ +These handy scripts setup any dns information that OpenVPN may push. +They also handle the interaction with OpenRC so that the OpenVPN service +can become "inactive". This means that when it starts, it goes inactive and +OpenRC continues on its merry way booting the system. When OpenVPN connects +to an endpoint it then re-starts the OpenVPN service and starts up any +services that depend on us. A similar thing happens when we shut down. + +Of course, this is all optional. diff --git a/support/openvpn/down.sh b/support/openvpn/down.sh new file mode 100755 index 00000000..063c69c2 --- /dev/null +++ b/support/openvpn/down.sh @@ -0,0 +1,49 @@ +#!/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. + +# If we have a service specific script, run this now +[ -x "${SVCNAME}"-down.sh ] && "${SVCNAME}"-down.sh + +# Restore resolv.conf to how it was +if type resolvconf >/dev/null 2>&1; then + resolvconf -d "${dev}" +elif [ -e /etc/resolv.conf-"${dev}".sv ]; then + # Important that we copy instead of move incase resolv.conf is + # a symlink and not an actual file + cp -p /etc/resolv.conf-"${dev}".sv /etc/resolv.conf + rm -f /etc/resolv.conf-"${dev}".sv +fi + +# Re-enter the init script to stop any dependant services +service=/etc/init.d/"${SVCNAME}" +[ ! -x "${service}" ] && service=/usr/local/etc/init.d/"${SVCNAME}" +if [ -x "${service}" ]; then + if "${service}" --quiet status; then + export IN_BACKGROUND=YES + "${service}" --quiet stop + fi +fi + +exit 0 diff --git a/support/openvpn/up.sh b/support/openvpn/up.sh new file mode 100755 index 00000000..b8294a0c --- /dev/null +++ b/support/openvpn/up.sh @@ -0,0 +1,99 @@ +#!/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 |