Merge pull request #11353 from kvuorine/fwknop-fixes

fwknop: init script improvements

1 files changed, 76 insertions, 82 deletions

diff --git a/net/fwknop/files/fwknopd.init b/net/fwknop/files/fwknopd.init
index 761016dd9..4c07d15d8 100644
--- a/net/fwknop/files/fwknopd.init
+++ b/net/fwknop/files/fwknopd.init
@@ -8,28 +8,29 @@
 USE_PROCD=1
 START=95
 
-. /lib/functions/network.sh
+. "${IPKG_INSTROOT}/lib/functions/network.sh"
 
 FWKNOPD_BIN=/usr/sbin/fwknopd
+FWKNOPD_CFGDIR=/var/etc/fwknop
 
 start_service()
 {
 	generate_configuration
 
-	if [ -n "$DEPEND_IFNAME" ] ; then
+	if [ -n "${DEPEND_IFNAME}" ] ; then
 		# We know the interface, so we can start
 		procd_open_instance
-		procd_set_param command "$FWKNOPD_BIN" --foreground --syslog-enable
+		procd_set_param command "${FWKNOPD_BIN}" --foreground --syslog-enable
 		procd_set_param respawn
-		if [ $UCI_ENABLED -eq 1 ]; then
-			procd_append_param command -c /var/etc/fwknopd.conf
-			procd_append_param command -a /var/etc/access.conf
+		if [ "${UCI_ENABLED}" -eq 1 ]; then
+			procd_append_param command -c "${FWKNOPD_CFGDIR}/fwknopd.conf"
+			procd_append_param command -a "${FWKNOPD_CFGDIR}/access.conf"
 		fi
-		procd_append_param command -i "$DEPEND_IFNAME"
-		procd_set_param netdev "$DEPEND_IFNAME"
+		procd_append_param command -i "${DEPEND_IFNAME}"
+		procd_set_param netdev "${DEPEND_IFNAME}"
 		procd_close_instance
 	else
-		logger -p daemon.info -t "fwknopd[----]" "Postponing start-up of fwknopd, network $NETWORK is not up"
+		logger -p daemon.info -t "fwknopd[$$]" "Postponing start-up of fwknopd, network ${NETWORK} is not up"
 	fi
 }
 
@@ -37,21 +38,21 @@ service_triggers()
 {
 	procd_add_reload_trigger "fwknopd"
 
-	if [ -n "$NETWORK" ] ; then
-		logger -p daemon.info -t "fwknopd[----]" "Listening for changes on network $NETWORK"
-		procd_add_reload_interface_trigger "$NETWORK"
+	if [ -n "${NETWORK}" ] ; then
+		logger -p daemon.info -t "fwknopd[$$]" "Listening for changes on network ${NETWORK}"
+		procd_add_reload_interface_trigger "${NETWORK}"
 	fi
 }
 
 get_bool()
 {
-	local _tmp="$1"
-	case "$_tmp" in
+	local _tmp="${1}"
+	case "${_tmp}" in
 		1|on|true|yes|enabled) _tmp=1;;
 		0|off|false|no|disabled) _tmp=0;;
-		*) _tmp="$2";;
+		*) _tmp="${2}";;
 	esac
-	echo -n "$_tmp"
+	echo -n "${_tmp}"
 }
 
 generate_configuration()
@@ -66,72 +67,65 @@ generate_configuration()
 	local DEFAULT_UCI_NETWORK=wan
 	local DEFAULT_FWKNOPD_IFNAME=
 
-	network_get_device DEFAULT_FWKNOPD_IFNAME $DEFAULT_UCI_NETWORK
+	network_get_device DEFAULT_FWKNOPD_IFNAME "${DEFAULT_UCI_NETWORK}"
 
 	config_cb() {
-		local type="$1"
-		local name="$2"
-		if [ "$type" = "global" ]; then
+		local type="${1}"
+		local name="${2}"
+		if [ "${type}" = "global" ]; then
 			option_cb() {
-				local option="$1"
-				local value="$2"
-				if [ "$option" = "uci_enabled" ] && [ "$(get_bool "$value" 0)" -eq 1 ] ; then
-					> /var/etc/fwknopd.conf
-					> /var/etc/access.conf
-					chmod 600 /var/etc/fwknopd.conf
-					chmod 600 /var/etc/access.conf
+				local option="${1}"
+				local value="${2}"
+				if [ "${option}" = "uci_enabled" ] && [ "$(get_bool "${value}" 0)" -eq 1 ] ; then
+					mkdir -p "${FWKNOPD_CFGDIR}"
+					> "${FWKNOPD_CFGDIR}/fwknopd.conf"
+					> "${FWKNOPD_CFGDIR}/access.conf"
+					chmod 600 "${FWKNOPD_CFGDIR}/fwknopd.conf"
+					chmod 600 "${FWKNOPD_CFGDIR}/access.conf"
 					UCI_ENABLED=1
-
-					# Forced defaults
-
-					# Do not let fwknopd to shut-down when interface goes down,
-					# control it from the start-up script instead:
-					# https://bugs.openwrt.org/index.php?do=details&task_id=1481
-					echo "EXIT_AT_INTF_DOWN n" >> /var/etc/fwknopd.conf
 				fi
 			}
-		elif [ "$type" = "network" ]; then
+		elif [ "${type}" = "network" ]; then
 			option_cb() {
-				local option="$1"
-				local value="$2"
-				if [ $UCI_ENABLED -eq 1 ] && [ $option = "network" ]; then
-					NETWORK="$value"
+				local option="${1}"
+				local value="${2}"
+				if [ "${UCI_ENABLED}" -eq 1 ] && [ "${option}" = "network" ]; then
+					NETWORK="${value}"
 				fi
 			}
-		elif [ "$type" = "config" ]; then
+		elif [ "${type}" = "config" ]; then
 			option_cb() {
-				local option="$1"
-				local value="$2"
-				if [ $UCI_ENABLED -eq 1 ] && [ $option = "PCAP_INTF" ]; then
-					PCAP_INTF="$value"
-					echo "$option $value" >> /var/etc/fwknopd.conf  #writing each option to fwknopd.conf
-				elif [ $UCI_ENABLED -eq 1 ] && [ $option = "EXIT_AT_INTF_DOWN" ]; then
-					logger -p daemon.warn -t "fwknopd[----]" "Ignoring EXIT_AT_INTF_DOWN option, forced to N (no) to work reliably with procd"
-				elif [ $UCI_ENABLED -eq 1 ]; then
-					echo "$option $value" >> /var/etc/fwknopd.conf  #writing each option to fwknopd.conf
+				local option="${1}"
+				local value="${2}"
+				if [ "${UCI_ENABLED}" -eq 1 ]; then
+					if [ "${option}" = "PCAP_INTF" ]; then
+						PCAP_INTF="${value}"
+					fi
+					echo "${option} ${value}" >> "${FWKNOPD_CFGDIR}/fwknopd.conf"  #writing each option to fwknopd.conf
 				fi
 			}
-		elif [ "$type" = "access" ]; then
+		elif [ "${type}" = "access" ]; then
 			if [ -f /tmp/access.conf.tmp ] ; then
-				cat /tmp/access.conf.tmp >> /var/etc/access.conf
+				cat /tmp/access.conf.tmp >> "${FWKNOPD_CFGDIR}/access.conf"
 				rm /tmp/access.conf.tmp
 			fi
 			option_cb() {
-				local option="$1"
-				local value="$2"
-				if [ $UCI_ENABLED -eq 1 ] && [ $option = "SOURCE" ]; then
-					echo "$option $value" >> /var/etc/access.conf  #writing each option to access.conf
-				fi
-				if [ $UCI_ENABLED -eq 1 ] && [ $option != "SOURCE" ]; then
-					echo "$option $value" >> /tmp/access.conf.tmp  #writing each option to access.conf
+				local option="${1}"
+				local value="${2}"
+				if [ "${UCI_ENABLED}" -eq 1 ]; then
+					if [ "${option}" = "SOURCE" ]; then
+						echo "${option} ${value}" >> "${FWKNOPD_CFGDIR}/access.conf"  #writing each option to access.conf
+					else
+						echo "${option} ${value}" >> /tmp/access.conf.tmp  #writing each option to access.conf
+					fi
 				fi
 			}
 		else
 			reset_cb
-			if [ -z "$type" ]; then
+			if [ -z "${type}" ]; then
 				# Finalize reading
 				if [ -f /tmp/access.conf.tmp ] ; then
-					cat /tmp/access.conf.tmp >> /var/etc/access.conf
+					cat /tmp/access.conf.tmp >> "${FWKNOPD_CFGDIR}/access.conf"
 					rm /tmp/access.conf.tmp
 				fi
 			fi
@@ -142,40 +136,40 @@ generate_configuration()
 		config_load fwknopd
 	fi
 
-	if [ $UCI_ENABLED -eq 0 ]; then
-		if [ -f $USER_CONFIG_PATH ] ; then
+	if [ "${UCI_ENABLED}" -eq 0 ]; then
+		if [ -f "${USER_CONFIG_PATH}" ] ; then
 			# Scan user configuration for PCAP_INTF settings and fallback to fwknopd's default
-			DEPEND_IFNAME="$( sed -ne '/^\s*PCAP_INTF\s\+/ { s/^\s*PCAP_INTF\s\+//; s/\s\+$//; p; q; }' $USER_CONFIG_PATH )"
-			if [ -n "$DEPEND_IFNAME" ]; then
-				logger -p daemon.debug -t "fwknopd[----]" "Found fwknopd.conf configuration, using PCAP_INTF interface $DEPEND_IFNAME"
+			DEPEND_IFNAME="$( sed -ne '/^\s*PCAP_INTF\s\+/ { s/^\s*PCAP_INTF\s\+//; s/\s\+$//; p; q; }' ${USER_CONFIG_PATH} )"
+			if [ -n "${DEPEND_IFNAME}" ]; then
+				logger -p daemon.debug -t "fwknopd[$$]" "Found fwknopd.conf configuration, using PCAP_INTF interface ${DEPEND_IFNAME}"
 			else
-				logger -p daemon.info -t "fwknopd[----]" "No PCAP_INTF interface specified in fwknopd.conf, fwknopd's default $DEFAULT_FWKNOPD_IFNAME will be used"
-				DEPEND_IFNAME="$DEFAULT_FWKNOPD_IFNAME"
+				logger -p daemon.info -t "fwknopd[$$]" "No PCAP_INTF interface specified in fwknopd.conf, fwknopd's default ${DEFAULT_FWKNOPD_IFNAME} will be used"
+				DEPEND_IFNAME="${DEFAULT_FWKNOPD_IFNAME}"
 			fi
 		else
-			logger -p daemon.error -t "fwknopd[----]" "No $USER_CONFIG_PATH found, not starting"
+			logger -p daemon.error -t "fwknopd[$$]" "No ${USER_CONFIG_PATH} found, not starting"
 			exit 1
 		fi
-	elif [ $UCI_ENABLED -eq 1 ]; then
-		if [ -n "$NETWORK" ] && [ -n "$PCAP_INTF" ]; then
-			logger -p daemon.warn -t "fwknopd[----]" "Specified both network and PCAP_INTF. Ignoring PCAP_INTF"
-		elif [ -z "$NETWORK" ] && [ -z "$PCAP_INTF" ]; then
+	elif [ "${UCI_ENABLED}" -eq 1 ]; then
+		if [ -n "${NETWORK}" ] && [ -n "${PCAP_INTF}" ]; then
+			logger -p daemon.warn -t "fwknopd[$$]" "Specified both network and PCAP_INTF. Ignoring PCAP_INTF"
+		elif [ -z "${NETWORK}" ] && [ -z "${PCAP_INTF}" ]; then
 			# Fallback - compatibility with old script, which used wan interface by default
-			logger -p daemon.info -t "fwknopd[----]" "Neither network, nor PCAP_INTF interface specified, trying network $DEFAULT_UCI_NETWORK"
-			NETWORK="$DEFAULT_UCI_NETWORK"
+			logger -p daemon.info -t "fwknopd[$$]" "Neither network, nor PCAP_INTF interface specified, trying network ${DEFAULT_UCI_NETWORK}"
+			NETWORK="${DEFAULT_UCI_NETWORK}"
 		fi
 
 		# Resolve network if possible
-		if [ -n "$NETWORK" ]; then
-			network_get_device DEPEND_IFNAME "$NETWORK"
-			if [ -n "$DEPEND_IFNAME" ]; then
-				logger -p daemon.debug -t "fwknopd[----]" "Resolved network $NETWORK as interface $DEPEND_IFNAME"
+		if [ -n "${NETWORK}" ]; then
+			network_get_device DEPEND_IFNAME "${NETWORK}"
+			if [ -n "${DEPEND_IFNAME}" ]; then
+				logger -p daemon.debug -t "fwknopd[$$]" "Resolved network ${NETWORK} as interface ${DEPEND_IFNAME}"
 			else
-				logger -p daemon.warn -t "fwknopd[----]" "Cannot find interface for network $NETWORK, probably the network is not up"
+				logger -p daemon.warn -t "fwknopd[$$]" "Cannot find interface for network ${NETWORK}, probably the network is not up"
 			fi
-		elif [ -n "$PCAP_INTF" ]; then
-			DEPEND_IFNAME="$PCAP_INTF"
-			logger -p daemon.debug -t "fwknopd[----]" "Using configured PCAP_INTF interface $DEPEND_IFNAME"
+		elif [ -n "${PCAP_INTF}" ]; then
+			DEPEND_IFNAME="${PCAP_INTF}"
+			logger -p daemon.debug -t "fwknopd[$$]" "Using configured PCAP_INTF interface ${DEPEND_IFNAME}"
 		fi
 	fi
 }