Add route to set/get sysinfo

src/sysinfo/fixed.js

@@ -1,10 +1,13 @@
 'use strict';
 
 exports = module.exports = {
-    getServerIp: getServerIp
+    getServerIp,
+    testConfig
 };
 
-var assert = require('assert');
+var assert = require('assert'),
+    BoxError = require('../boxerror.js'),
+    validator = require('validator');
 
 function getServerIp(config, callback) {
     assert.strictEqual(typeof config, 'object');
@@ -13,3 +16,12 @@ function getServerIp(config, callback) {
     callback(null, config.ip);
 }
 
+function testConfig(config, callback) {
+    assert.strictEqual(typeof config, 'object');
+    assert.strictEqual(typeof callback, 'function');
+
+    if (typeof config.ip !== 'string') return callback(new BoxError(BoxError.BAD_FIELD, 'ip must be a string'));
+    if (!validator.isIP(config.ip, 4)) return callback(new BoxError(BoxError.BAD_FIELD, 'ip is not a valid ipv4'));
+
+    callback(null);
+}