openrc/init.d.misc/openvpn

#!/sbin/runscript
# 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 [ -z "${openvpn_dir}" ]; then
	if [ -d /usr/local/etc/openvpn ]; then
		openvpn_dir=/usr/local/etc/openvpn
	else
		openvpn_dir=/etc/openvpn
	fi
fi

vpn=${SVCNAME#*.}
name="OpenVPN"
[ "${vpn}" != "openvpn" ] && name="${name} (${vpn})"
command=/usr/sbin/openvpn
[ -x ${command} ] || command=/usr/local/sbin/openvpn

pidfile="/var/run/${SVCNAME}.pid"
openvpn_config=${openvpn_config:-${openvpn_dir}/${vpn}.conf}
command_args="${openvpn_args} --daemon --config ${openvpn_config} --writepid ${pidfile}"
required_dirs="${openvpn_dir}"
required_files="${openvpn_config}"

# If we're an openvpn client, then supply a nice default config
# You can find sample up/down scripts in the OpenRC support/openvpn dir
if yesno "${openvpn_client}"; then
	openvpn_up=${openvpn_up:-${openvpn_dir}/up.sh}
	openvpn_down=${openvpn_down:-${openvpn_dir}/down.sh}
	command_args="${command_args} --nobind --up-delay --up-restart --down-pre"
	command_args="${command_args} --up ${openvpn_up}"
	command_args="${command_args} --down ${openvpn_down}"
	required_files="${required_files} ${openvpn_up} ${openvpn_down}"
	
	in_background_fake="start stop"
	start_inactive="YES"
fi

depend() {
	need net
	use dns
}

start_pre() {
	# Linux has good dynamic tun/tap creation
	if [ "${RC_UNAME}" = "Linux" ]; then
		if [ ! -e /dev/net/tun ]; then
			if ! modprobe tun; then
				eerror "TUN/TAP support is not available in this kernel"
				return 1
			fi
		fi
		if [ -h /dev/net/tun -a -c /dev/misc/net/tun ]; then
			ebegin "Detected broken /dev/net/tun symlink, fixing..."
			rm -f /dev/net/tun
			ln -s /dev/misc/net/tun /dev/net/tun
			eend $?
		fi
	else
		# Hammer the modules home by default
		sysctl -a | grep -q '\.tun\.' || kldload if_tun
		sysctl -a | grep -q '\.tap\.' || kldload if_tap
	fi
	
	# If the config file does not specify the cd option, we do
	# But if we specify it, we override the config option which we do not want
	if ! grep -q "^[ \t]*cd[ \t].*" "${openvpn_config}"; then
		command_args="${command_args} --cd ${openvpn_dir}"
	fi
}