systemd: migrate the SySv init script to a simple bash script
This commit is contained in:
Sebastien Badia
396
conf/ynh-vpnclient
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396
conf/ynh-vpnclient
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#!/bin/bash
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### BEGIN INIT INFO
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# Provides: ynh-vpnclient
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# Required-Start: $network $remote_fs $syslog yunohost-api
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# Required-Stop: $network $remote_fs $syslog
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# Should-Start: ynh-hotspot
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# Should-Stop: ynh-hotspot
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# Default-Start: 2 3 4 5
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# Default-Stop: 0 1 6
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# Short-Description: Start VPN client.
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# Description: Start VPN client.
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### END INIT INFO
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# VPN Client app for YunoHost
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# Copyright (C) 2015 Julien Vaubourg <julien@vaubourg.com>
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# Contribute at https://github.com/jvaubourg/vpnclient_ynh
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#
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# This program is free software: you can redistribute it and/or modify
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# it under the terms of the GNU Affero General Public License as published by
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# the Free Software Foundation, either version 3 of the License, or
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# (at your option) any later version.
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#
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# This program is distributed in the hope that it will be useful,
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# but WITHOUT ANY WARRANTY; without even the implied warranty of
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# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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# GNU Affero General Public License for more details.
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#
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# You should have received a copy of the GNU Affero General Public License
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# along with this program. If not, see <http://www.gnu.org/licenses/>.
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# Functions
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## State functions
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has_nativeip6() {
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ip -6 route | grep -q default\ via
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}
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has_ip6delegatedprefix() {
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[ "${ynh_ip6_addr}" != none ]
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}
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has_hotspot_app() {
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[ -e /tmp/.ynh-hotspot-started ]
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}
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is_hotspot_knowme() {
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value=$(yunohost app setting hotspot vpnclient)
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if [[ "${value}" =~ "An instance is already running" ]]; then
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echo "${value}" >&2
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exit 1
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fi
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[ "${value}" == yes ]
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}
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is_ip6addr_set() {
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ip address show dev tun0 2> /dev/null | grep -q "${ynh_ip6_addr}/128"
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}
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is_serverip6route_set() {
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server_ip6=${1}
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if [ -z "${server_ip6}" ]; then
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false
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else
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ip -6 route | grep -q "${server_ip6}/"
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fi
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}
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is_openvpn_running() {
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systemctl is-active openvpn@client.service --quiet &> /dev/null
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}
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is_running() {
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((has_nativeip6 && is_serverip6route_set "${new_server_ip6}") || ! has_nativeip6)\
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&& ((! has_hotspot_app && has_ip6delegatedprefix && is_ip6addr_set) || has_hotspot_app || ! has_ip6delegatedprefix)\
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&& is_openvpn_running
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}
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## Setters
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set_ip6addr() {
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ip address add "${ynh_ip6_addr}/128" dev tun0
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}
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set_serverip6route() {
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server_ip6=${1}
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ip6_gw=${2}
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wired_device=${3}
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ip route add "${server_ip6}/128" via "${ip6_gw}" dev "${wired_device}"
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}
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start_openvpn() {
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ip6_gw=${1}
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server_ip6=${2}
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if [ ! -z "${ip6_gw}" -a ! -z "${server_ip6}" ]; then
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proto=udp6
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[ "${ynh_server_proto}" == tcp ] && proto=tcp6-client
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else
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proto=udp
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[ "${ynh_server_proto}" == tcp ] && proto=tcp-client
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fi
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cp /etc/openvpn/client.conf{.tpl,}
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sed "s|<TPL:SERVER_NAME>|${ynh_server_name}|g" -i /etc/openvpn/client.conf
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sed "s|<TPL:SERVER_PORT>|${ynh_server_port}|g" -i /etc/openvpn/client.conf
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sed "s|<TPL:PROTO>|${proto}|g" -i /etc/openvpn/client.conf
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if [ -e /etc/openvpn/keys/user.key ]; then
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sed 's|^<TPL:CERT_COMMENT>||' -i /etc/openvpn/client.conf
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else
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sed 's|^<TPL:CERT_COMMENT>|;|' -i /etc/openvpn/client.conf
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fi
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if [[ "${proto}" =~ udp ]]; then
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sed 's|^<TPL:UDP_COMMENT>||' -i /etc/openvpn/client.conf
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else
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sed 's|^<TPL:UDP_COMMENT>|;|' -i /etc/openvpn/client.conf
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fi
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if [ -z "${ynh_login_user}" ]; then
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sed 's|^<TPL:LOGIN_COMMENT>|;|' -i /etc/openvpn/client.conf
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else
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sed 's|^<TPL:LOGIN_COMMENT>||' -i /etc/openvpn/client.conf
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fi
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systemctl start openvpn@client.service --quiet
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}
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## Unsetters
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unset_ip6addr() {
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ip address delete "${ynh_ip6_addr}/128" dev tun0
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}
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unset_serverip6route() {
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server_ip6=${1}
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ip6_gw=${2}
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wired_device=${3}
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ip route delete "${server_ip6}/128" via "${ip6_gw}" dev "${wired_device}"
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}
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stop_openvpn() {
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systemctl stop openvpn.service --quiet
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}
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## Tools
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moulinette_get() {
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var=${1}
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value=$(yunohost app setting vpnclient "${var}")
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if [[ "${value}" =~ "An instance is already running" ]]; then
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echo "${value}" >&2
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exit 1
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fi
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echo "${value}"
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}
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moulinette_set() {
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var=${1}
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value=${2}
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msg=$(yunohost app setting vpnclient "${var}" -v "${value}")
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if [ ! $? -eq 0 ]; then
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echo "${msg}" >&2
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exit 1
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fi
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}
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if [ "$1" != restart ]; then
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# Restart php5-fpm at the first start (it needs to be restarted after the slapd start)
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if [ ! -e /tmp/.ynh-vpnclient-boot ]; then
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touch /tmp/.ynh-vpnclient-boot
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systemctl restart php5-fpm --quiet
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fi
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# Check configuration consistency
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if [[ ! "${1}" =~ stop ]]; then
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exitcode=0
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if [ ! -e /etc/openvpn/keys/ca-server.crt ]; then
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echo "[WARN] You need a CA server (you can add it through the web admin)"
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exitcode=1
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fi
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empty=$(find /etc/openvpn/keys/ -empty -name credentials &> /dev/null | wc -l)
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if [ "${empty}" -gt 0 -a ! -e /etc/openvpn/keys/user.key ]; then
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echo "[WARN] You need either a client certificate, either a username, or both (you can add one through the web admin)"
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exitcode=1
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fi
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[ "${exitcode}" -ne 0 ] && exit ${exitcode}
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fi
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# Variables
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echo -n "Retrieving Yunohost settings... "
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ynh_service_enabled=$(moulinette_get service_enabled)
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ynh_server_name=$(moulinette_get server_name)
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ynh_server_port=$(moulinette_get server_port)
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ynh_server_proto=$(moulinette_get server_proto)
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ynh_ip6_addr=$(moulinette_get ip6_addr)
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ynh_login_user=$(moulinette_get login_user)
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old_ip6_gw=$(moulinette_get ip6_gw)
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old_wired_device=$(moulinette_get wired_device)
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old_server_ip6=$(moulinette_get server_ip6)
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new_ip6_gw=$(ip -6 route | grep default\ via | awk '{ print $3 }')
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new_wired_device=$(ip route | awk '/default via/ { print $NF; }')
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new_server_ip6=$(host "${ynh_server_name}" | awk '/IPv6/ { print $NF; }')
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if [ -z "${new_server_ip6}" ]; then
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new_server_ip6=$(host "${ynh_server_name}" 80.67.188.188 | awk '/IPv6/ { print $NF; }')
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fi
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echo "OK"
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fi
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# Script
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case "${1}" in
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start)
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if is_running; then
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echo "Already started"
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elif [ "${ynh_service_enabled}" -eq 0 ]; then
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echo "Disabled service"
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else
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echo "[vpnclient] Starting..."
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touch /tmp/.ynh-vpnclient-started
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# Run openvpn
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if ! is_openvpn_running; then
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echo "Run openvpn"
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start_openvpn "${new_ip6_gw}" "${new_server_ip6}"
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if [ ! $? -eq 0 ]; then
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exit 1
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fi
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i=0; false || while [ $? -ne 0 ]; do
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sleep 1 && (( i++ ))
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[ ${i} -gt 20 ] && stop_openvpn
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[ ${i} -gt 20 ] && exit 1
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ip link show dev tun0 &> /dev/null
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done
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fi
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# Check old state of the server ipv6 route
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if [ ! -z "${old_server_ip6}" -a ! -z "${old_ip6_gw}" -a ! -z "${old_wired_device}"\
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-a \( "${new_server_ip6}" != "${old_server_ip6}" -o "${new_ip6_gw}" != "${old_ip6_gw}"\
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-o "${new_wired_device}" != "${old_wired_device}" \) ]\
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&& is_serverip6route_set "${old_server_ip6}"; then
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unset_serverip6route "${old_server_ip6}" "${old_ip6_gw}" "${old_wired_device}"
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fi
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# Set the new server ipv6 route
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if has_nativeip6 && ! is_serverip6route_set "${new_server_ip6}"; then
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echo "Set IPv6 server route"
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set_serverip6route "${new_server_ip6}" "${new_ip6_gw}" "${new_wired_device}"
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fi
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# Set the ipv6 address
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if ! has_hotspot_app && has_ip6delegatedprefix && ! is_ip6addr_set; then
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echo "Set IPv6 address"
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set_ip6addr
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fi
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# Update dynamic settings
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moulinette_set server_ip6 "${new_server_ip6}"
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moulinette_set ip6_gw "${new_ip6_gw}"
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moulinette_set wired_device "${new_wired_device}"
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# Restart dhcpd
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systemctl stop bind9 --quiet &> /dev/null
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systemctl restart dnsmasq --quiet
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# Restart hotspot if needed
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if has_hotspot_app && ! is_hotspot_knowme; then
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systemctl start ynh-hotspot --quiet
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fi
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fi
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;;
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stop)
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echo "[vpnclient] Stopping..."
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rm -f /tmp/.ynh-vpnclient-started
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if ! has_hotspot_app && has_ip6delegatedprefix && is_ip6addr_set; then
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echo "Unset IPv6 address"
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unset_ip6addr
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fi
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if is_serverip6route_set "${old_server_ip6}"; then
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echo "Unset IPv6 server route"
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unset_serverip6route "${old_server_ip6}" "${old_ip6_gw}" "${old_wired_device}"
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fi
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if is_openvpn_running; then
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echo "Stop openvpn"
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stop_openvpn
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i=0; true && while [ $? -eq 0 ]; do
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sleep 1 && (( i++ ))
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[ ${i} -gt 20 ] && exit 1
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ip link show dev tun0 &> /dev/null
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done
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fi
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if has_hotspot_app && is_hotspot_knowme; then
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systemctl start ynh-hotspot --quiet
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fi
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systemctl restart dnsmasq --quiet
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;;
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restart)
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$0 stop
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$0 start
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;;
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status)
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exitcode=0
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if [ "${ynh_service_enabled}" -eq 0 ]; then
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echo "[ERR] VPN Client Service disabled"
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exitcode=1
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fi
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echo "[INFO] Autodetected internet interface: ${new_wired_device} (last start: ${old_wired_device})"
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echo "[INFO] Autodetected IPv6 address for the VPN server: ${new_server_ip6} (last start: ${old_server_ip6})"
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if has_ip6delegatedprefix; then
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echo "[INFO] IPv6 delegated prefix found"
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echo "[INFO] IPv6 address computed from the delegated prefix: ${ynh_ip6_addr}"
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if ! has_hotspot_app; then
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echo "[INFO] No Hotspot app detected"
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if is_ip6addr_set; then
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echo "[OK] IPv6 address correctly set"
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else
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echo "[ERR] No IPv6 address set"
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exitcode=1
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fi
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else
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echo "[INFO] Hotspot app detected"
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echo "[INFO] No IPv6 address to set"
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fi
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else
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echo "[INFO] No IPv6 delegated prefix found"
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fi
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if has_nativeip6; then
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echo "[INFO] Native IPv6 detected"
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echo "[INFO] Autodetected native IPv6 gateway: ${new_ip6_gw} (last start: ${old_ip6_gw})"
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if is_serverip6route_set "${new_server_ip6}"; then
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echo "[OK] IPv6 server route correctly set"
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else
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echo "[ERR] No IPv6 server route set"
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exitcode=1
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fi
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else
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echo "[INFO] No native IPv6 detected"
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echo "[INFO] No IPv6 server route to set"
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fi
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if is_openvpn_running; then
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echo "[OK] Openvpn is running"
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else
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echo "[ERR] Openvpn is not running"
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exitcode=1
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fi
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exit ${exitcode}
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;;
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*)
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echo "Usage: $0 {start|stop|litestop|restart|status}"
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exit 1
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;;
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esac
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exit 0
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