luci-mod-network: migrate network config depending on netifd version

Checking netifd version is important for users of the most recent LuCI
that didn't update netifd (e.g. OpenWrt package).

Suggested-by: Jo-Philipp Wich <jo@mein.io>
Signed-off-by: Rafał Miłecki <rafal@milecki.pl>

modules/luci-mod-network/htdocs/luci-static/resources/view/network/interfaces.js

@@ -294,6 +294,7 @@ return view.extend({
 			network.getDSLModemType(),
 			network.getDevices(),
 			fs.lines('/etc/iproute2/rt_tables'),
+			fs.read('/usr/lib/opkg/info/netifd.control'),
 			uci.changes()
 		]);
 	},
@@ -354,8 +355,11 @@ return view.extend({
 	},
 
 	render: function(data) {
-		if (this.interfaceWithIfnameSections().length ||
-		    this.deviceWithIfnameSections().length)
+		var netifdVersion = (data[3] || '').match(/Version: ([^\n]+)/);
+
+		if (netifdVersion && netifdVersion[1] >= "2021-05-20" &&
+		    (this.interfaceWithIfnameSections().length ||
+		     this.deviceWithIfnameSections().length))
 			return this.renderMigration();
 
 		var dslModemType = data[0],

modules/luci-mod-network/root/usr/share/rpcd/acl.d/luci-mod-network.json

@@ -5,7 +5,8 @@
 			"cgi-io": [ "exec" ],
 			"file": {
 				"/etc/iproute2/rt_tables": [ "read" ],
-				"/usr/libexec/luci-peeraddr": [ "exec" ]
+				"/usr/libexec/luci-peeraddr": [ "exec" ],
+				"/usr/lib/opkg/info/netifd.control": [ "read" ]
 			},
 			"ubus": {
 				"file": [ "exec" ],