luci-base, luci-mod-status: expose LuCI version via ubus

Instead of scraping the LuCI version from Lua sources, fetch it via ubus
in order to be independent from the Lua runtime.

Fixes: #6154
Signed-off-by: Jo-Philipp Wich <jo@mein.io>

modules/luci-base/root/usr/share/rpcd/ucode/luci

@@ -7,6 +7,7 @@ import { stdin, access, dirname, basename, open, popen, glob, lsdir, readfile, r
 import { cursor } from 'uci';
 
 import { init_list, init_index, init_enabled, init_action, conntrack_list, process_list } from 'luci.sys';
+import { revision, branch } from 'luci.version';
 import { statvfs } from 'luci.core';
 
 import timezones from 'luci.zoneinfo';
@@ -17,6 +18,12 @@ function shellquote(s) {
 }
 
 const methods = {
+	getVersion: {
+		call: function(request) {
+			return { revision, branch };
+		}
+	},
+
 	getInitList: {
 		args: { name: 'name' },
 		call: function(request) {

modules/luci-mod-status/htdocs/luci-static/resources/view/status/include/10_system.js

@@ -3,6 +3,11 @@
 'require fs';
 'require rpc';
 
+var callLuciVersion = rpc.declare({
+	object: 'luci',
+	method: 'getVersion'
+});
+
 var callSystemBoard = rpc.declare({
 	object: 'system',
 	method: 'board'
@@ -20,7 +25,7 @@ return baseclass.extend({
 		return Promise.all([
 			L.resolveDefault(callSystemBoard(), {}),
 			L.resolveDefault(callSystemInfo(), {}),
-			fs.lines('/usr/lib/lua/luci/version.lua')
+			L.resolveDefault(callLuciVersion(), { revision: _('unknown version'), branch: 'LuCI' })
 		]);
 	},
 
@@ -29,11 +34,7 @@ return baseclass.extend({
 		    systeminfo  = data[1],
 		    luciversion = data[2];
 
-		luciversion = luciversion.filter(function(l) {
-			return l.match(/^\s*(luciname|luciversion)\s*=/);
-		}).map(function(l) {
-			return l.replace(/^\s*\w+\s*=\s*['"]([^'"]+)['"].*$/, '$1');
-		}).join(' ');
+		luciversion = luciversion.branch + ' ' + luciversion.revision;
 
 		var datestr = null;
 

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

@@ -5,10 +5,10 @@
 			"file": {
 				"/proc/sys/net/netfilter/nf_conntrack_count": [ "read" ],
 				"/proc/sys/net/netfilter/nf_conntrack_max": [ "read" ],
-				"/usr/lib/lua/luci/version.lua": [ "read" ],
 				"/www/luci-static/resources/view/status/include": [ "list" ]
 			},
 			"ubus": {
+				"luci": [ "getVersion" ],
 				"file": [ "list", "read" ],
 				"system": [ "board", "info" ]
 			}