kamailio-5.x: add hotplug script

Add hotplug script to base package. Hotplug will only occur if user
enables it via uci config.

Signed-off-by: Sebastian Kemper <sebastian_ml@gmx.net>

net/kamailio-5.x/Makefile

@@ -271,6 +271,10 @@ $(foreach c,kamailio.cfg kamctlrc,$(call Package/kamailio5/install/conffile,$(1)
 	$(INSTALL_BIN) \
 		./files/kamailio.init \
 		$(1)/etc/init.d/kamailio
+	$(INSTALL_DIR) $(1)/etc/hotplug.d/iface
+	$(INSTALL_BIN) \
+		./files/kamailio.hotplug \
+		$(1)/etc/hotplug.d/iface
 	$(CP) \
 		$(PKG_INSTALL_DIR)/usr/lib/kamailio/kamctl \
 		$(1)/usr/lib/kamailio/

net/kamailio-5.x/files/kamailio.config

@@ -19,3 +19,7 @@ config kamailio 'general'
 	# Any other option can be put between the quotes below:
 	#option options ""
 
+config kamailio 'hotplug'
+	# Uncomment to enable hotplug:
+	#option interface 'wan'
+

net/kamailio-5.x/files/kamailio.hotplug

@@ -0,0 +1,24 @@
+#!/bin/sh
+
+[ "$ACTION" = ifup ] || exit 0
+
+NAME=kamailio
+COMMAND=/etc/init.d/$NAME
+LOGGER="/usr/bin/logger -t hotplug"
+
+$COMMAND enabled || exit 0
+
+. /lib/functions.sh
+
+config_load $NAME
+
+config_get_bool enabled general enabled 0
+[ $enabled -eq 0 ] && exit 0
+
+config_get hotplug_iface hotplug interface
+
+[ "$INTERFACE" = "$hotplug_iface" ] && {
+	$LOGGER "Restarting $NAME due to \"$ACTION\" of \"$INTERFACE\""
+	$COMMAND restart
+}
+