mdns: update and rename package to the umdns

This update includes numerous small fixes for:
1) Interfaces setup
2) Packets parsing
3) Sending replies
Without this there were multiple problems with exchanging information
between (u)mdns and other implementations (including (u)mdns as well).

This also follows project rename to umdns which was required to avoid
confusion with Apple's mdnsd from mDNSResponder project.

Signed-off-by: Rafał Miłecki <rafal@milecki.pl>

package/network/services/umdns/Makefile

@@ -7,14 +7,14 @@
 
 include $(TOPDIR)/rules.mk
 
-PKG_NAME:=mdns
+PKG_NAME:=umdns
 PKG_RELEASE:=1
 
 PKG_SOURCE_URL=$(LEDE_GIT)/project/mdnsd.git
 PKG_SOURCE_PROTO:=git
-PKG_SOURCE_DATE:=2017-01-31
-PKG_SOURCE_VERSION:=9cbbb141068c12ed032736e20f982e2a0fb43edc
-PKG_MIRROR_HASH:=2b981bd2f695f4da63b51be33b42dcda132c6adab227eda2f68a5c534284aea9
+PKG_SOURCE_DATE:=2017-02-15
+PKG_SOURCE_VERSION:=0d545ed7287026584722a3f9aa855c29bd24d59f
+PKG_MIRROR_HASH:=9670680a31f8eca5724da4cd12efedcbc27563b09ed4d94218f5debee1673abc
 
 PKG_MAINTAINER:=John Crispin <john@phrozen.org>
 PKG_LICENSE:=LGPL-2.1
@@ -23,7 +23,7 @@ include $(INCLUDE_DIR)/package-seccomp.mk
 include $(INCLUDE_DIR)/package.mk
 include $(INCLUDE_DIR)/cmake.mk
 
-define Package/mdns
+define Package/umdns
   SECTION:=net
   CATEGORY:=Network
   TITLE:=OpenWrt Multicast DNS Daemon
@@ -32,16 +32,16 @@ endef
 
 TARGET_CFLAGS += -I$(STAGING_DIR)/usr/include
 
-define Package/mdns/conffiles
-/etc/config/mdns
+define Package/umdns/conffiles
+/etc/config/umdns
 endef
 
-define Package/mdns/install
+define Package/umdns/install
 	$(INSTALL_DIR) $(1)/usr/sbin $(1)/etc/init.d $(1)/etc/config
-	$(INSTALL_BIN) $(PKG_BUILD_DIR)/mdns $(1)/usr/sbin/
-	$(INSTALL_BIN) ./files/mdns.init $(1)/etc/init.d/mdns
-	$(INSTALL_CONF) ./files/mdns.config $(1)/etc/config/mdns
-	$(call InstallSeccomp,$(1),./files/mdns.json)
+	$(INSTALL_BIN) $(PKG_BUILD_DIR)/umdns $(1)/usr/sbin/
+	$(INSTALL_BIN) ./files/umdns.init $(1)/etc/init.d/umdns
+	$(INSTALL_CONF) ./files/umdns.config $(1)/etc/config/umdns
+	$(call InstallSeccomp,$(1),./files/umdns.json)
 endef
 
-$(eval $(call BuildPackage,mdns))
+$(eval $(call BuildPackage,umdns))

package/network/services/umdns/files/umdns.config

@@ -1,3 +1,3 @@
-config mdns
+config umdns
 	option jail 1
 	list network lan

package/network/services/umdns/files/umdns.init

@@ -6,11 +6,11 @@
 START=80
 
 USE_PROCD=1
-PROG=/usr/sbin/mdns
+PROG=/usr/sbin/umdns
 IFACES=""
 
 load_ifaces() {
-	local network="$(uci get mdns.@mdns[-1].network)"
+	local network="$(uci get umdns.@umdns[-1].network)"
 	for n in $network; do
 		local device
 		json_load "$(ifstatus $n)"
@@ -27,28 +27,28 @@ reload_service() {
 	done
 	json_close_array
 
-	ubus call mdns set_config "$(json_dump)"
+	ubus call umdns set_config "$(json_dump)"
 }
 
 start_service() {
-	local network="$(uci get mdns.@mdns[-1].network)"
+	local network="$(uci get umdns.@umdns[-1].network)"
 
 	procd_open_instance
 	procd_set_param command "$PROG"
-	procd_set_param seccomp /etc/seccomp/mdns.json
+	procd_set_param seccomp /etc/seccomp/umdns.json
 	procd_set_param respawn
 	procd_open_trigger
-	procd_add_config_trigger "config.change" "mdns" /etc/init.d/mdns reload
+	procd_add_config_trigger "config.change" "umdns" /etc/init.d/umdns reload
 	for n in $network; do
-		procd_add_interface_trigger "interface.*" $n /etc/init.d/mdns reload	
+		procd_add_interface_trigger "interface.*" $n /etc/init.d/umdns reload
 	done
-	procd_add_raw_trigger "instance.update" 5000 "/bin/ubus" "call" "mdns" "reload"
+	procd_add_raw_trigger "instance.update" 5000 "/bin/ubus" "call" "umdns" "reload"
 	procd_close_trigger
-	[ "$(uci get mdns.@mdns[-1].jail)" = 1 ] && procd_add_jail mdns ubus log
+	[ "$(uci get umdns.@umdns[-1].jail)" = 1 ] && procd_add_jail umdns ubus log
 	procd_close_instance
 }
 
 service_started() {
-	ubus -t 10 wait_for mdns
+	ubus -t 10 wait_for umdns
 	[ $? = 0 ] && reload_service
 }