openvpn: autostart openvpn instances for each .conf file in /etc/openvpn

Align init behaviour with other distros by starting an OpenVPN instance
for each config file found in /etc/openvpn/. This removes the additional
requirement to "register" the configs with uci and thus simplifies the
setup.

Make sure to respect the disabled state in uci to not suddenly autostart
instances which have been previously set to disabled, also skip configs
which are already started due to uci configuration.

Signed-off-by: Jo-Philipp Wich <jow@openwrt.org>

git-svn-id: svn://svn.openwrt.org/openwrt/trunk@44310 3c298f89-4303-0410-b956-a3cf2f4a3e73

package/network/services/openvpn/Makefile

@@ -10,7 +10,7 @@ include $(TOPDIR)/rules.mk
 PKG_NAME:=openvpn
 
 PKG_VERSION:=2.3.6
-PKG_RELEASE:=2
+PKG_RELEASE:=3
 
 PKG_SOURCE_URL:=http://swupdate.openvpn.net/community/releases
 PKG_SOURCE:=$(PKG_NAME)-$(PKG_VERSION).tar.gz

package/network/services/openvpn/files/openvpn.init

@@ -13,6 +13,9 @@ PROG=/usr/sbin/openvpn
 LIST_SEP="
 "
 
+UCI_STARTED=
+UCI_DISABLED=
+
 append_param() {
 	local s="$1"
 	local v="$2"
@@ -59,6 +62,7 @@ openvpn_add_instance() {
 	procd_open_instance
 	procd_set_param command "$PROG"	\
 		--syslog "openvpn($name)" \
+		--status "/var/run/openvpn.$name.status" \
 		--cd "$dir" \
 		--config "$conf"
 	procd_set_param file "$dir/$conf"
@@ -69,14 +73,19 @@ openvpn_add_instance() {
 start_instance() {
 	local s="$1"
 
-	section_enabled "$s" || return 1
-
 	config_get config "$s" config
+	config="${config:+$(readlink -f "$config")}"
+
+	section_enabled "$s" || {
+		append UCI_DISABLED "$config" "$LIST_SEP"
+		return 1
+	}
 
 	[ ! -d "/var/run" ] && mkdir -p "/var/run"
 
 	if [ ! -z "$config" ]; then
-		openvpn_add_instance "$s" "$(dirname "$config")" "$(basename "$config")"
+		append UCI_STARTED "$config" "$LIST_SEP"
+		openvpn_add_instance "$s" "${config%/*}" "$config"
 		return
 	fi
 
@@ -123,4 +132,23 @@ start_instance() {
 start_service() {
 	config_load 'openvpn'
 	config_foreach start_instance 'openvpn'
+
+	local path name
+	for path in /etc/openvpn/*.conf; do
+		if [ -f "$path" ]; then
+			name="${path##*/}"; name="${name%.conf}"
+
+			# don't start configs again that are already started by uci
+			if echo "$UCI_STARTED" | grep -qxF "$path"; then
+				continue
+
+			# don't start configs which are set to disabled in uci
+			elif echo "$UCI_DISABLED" | grep -qxF "$path"; then
+				logger -t openvpn "$name.conf is disabled in /etc/config/openvpn"
+				continue
+			fi
+
+			openvpn_add_instance "$name" "${path%/*}" "$path"
+		fi
+	done
 }