Add save_state, recover_state, safe_test and configure_all to qmpcontrol

Small cosmetic changes

packages/qmp-system/files/etc/qmp/qmp_control.sh

@@ -102,25 +102,83 @@ hard_reboot() {
 	echo b > /proc/sysrq-trigger 
 }
 
+configure_all() {
+	configure_system
+	configure_wifi
+	configure_network	
+	apply_netserver
+}
+
+safe_test() {
+	[ -e "/tmp/qmp.save.tar.gz" ] && echo "Found saved state! Make sure you want to use it" \
+	|| { 
+		echo "Cannot found saved state, saving it..."
+		save_state
+	}
+	
+	touch /tmp/qmp.safe.test
+	echo "File /tmp/qmp.safe.test has been created, after configuring the system you will have 
+	240 seconds to remove it or the previous state will be recovered"
+	
+	read -p'Do you agree?[y,N] ' a
+	[ "$a" != "y" ] && return
+	
+	configure_all
+	
+	( sleep 240
+		[ -e "/tmp/qmp.safe.test" ] && {
+			recover_state
+			hard_reboot
+		} || rm -f "/tmp/qmp.safe.test"
+	) &
+}
+
+save_state() {
+	echo "Saving state at $(date) in file /tmp/qmp.save.tar.gz"
+	tar czf /tmp/qmp.save.tar.gz /overlay/
+}
+
+recover_state() {
+	echo "Recovering state at $(date) from /tmp/qmp.save.tar.gz"
+	cp -f /etc/config/qmp /etc/config/qmp.wrong
+	[ -e "/tmp/qmp.save.tar.gz" ] && tar xzf /tmp/qmp.save.tar.gz -C / || \
+	echo "Cannot recover state because it has not been saved before"
+}
+
 help() {
 	echo "Use: $0 <function> [params]"
+		
 	echo ""
-	echo "Available functions:"
-	echo "  offer_default_gw [ipv4|ipv6]   : Offers default gw to the network IPv4 or IPv6, both versions if no value."
-	echo "  search_default_gw [ipv4|ipv6]  : Search for a default gw in the network IPv4 or IPv6, both versions if no value."
-	echo "  disable_default_gw [ipv4|ipv6] : Disables the search/offer of default GW IPv4 and/or IPv6"
-	echo "  configure_wifi                 : Configure all WiFi devices"
-	echo "  reset_wifi                     : Reset, rescan and configure all the WiFi devices"
+	echo "Configuration:"
+	echo "  configure_all				   : Configure and apply all settings"
 	echo "  configure_network              : Configure and apply network settings"
 	echo "  configure_system               : Configure and apply system settings (qmp.node section and so on)"
+	echo "  configure_wifi                 : Configure all WiFi devices"
+	echo "  reset_wifi                     : Reset, rescan and configure all the WiFi devices"
+	
+	echo ""
+	echo "Safe configuration apply:"
+	echo "  save_state					   : Saves current state of configuration files"
+	echo "  recover_state                  : Recovers previous saved state"
+	echo "  safe_test					   : Performs a safe configure_all. If something wrong it comes back to old state"
+	
+	echo ""
+	echo "Gateways:"
+	echo "  offer_default_gw [ipv4|ipv6]   : Offers default gw to the network IPv4 or IPv6, both versions if no value"
+	echo "  search_default_gw [ipv4|ipv6]  : Search for a default gw in the network IPv4 or IPv6, both versions if no value"
+	echo "  disable_default_gw [ipv4|ipv6] : Disables the search/offer of default GW IPv4 and/or IPv6"
 	echo "  publish_hna                    : Publish an IP range (v4 or v6): publish_hna <IP/NETMASK> [ID]"
 	echo "  unpublish_hna                  : Unpublish a current HNA: unpublish_hna <ID>"
+
+	echo ""
+	echo "Other:"
 	echo "  apply_netserver                : Start/stop nerserver depending on qmp configuration"
 	echo "  enable_ns_ppt                  : Enable POE passtrought from NanoStation M2/5 devices. Be careful with this"
 	echo "  upgrade [URL]                  : Upgrade system. By default to the last version, but image url can be provided to force"
 	echo "  hard_reboot                    : Performs a hard reboot (using kernel sysrq)"
+	
 	echo ""
-	exit 1
+	exit 0
 }