initial features implementation

src/custom.js

@@ -0,0 +1,29 @@
+'use strict';
+
+let debug = require('debug')('box:features'),
+    paths = require('./paths.js'),
+    safe = require('safetydance'),
+    yaml = require('js-yaml');
+
+exports = module.exports = {
+    features: features,
+};
+
+const gCustom = (function () {
+    try {
+        if (!safe.fs.existsSync(paths.CUSTOM_FILE)) return {};
+        return yaml.safeLoad(safe.fs.readFileSync(paths.CUSTOM_FILE, 'utf8'));
+    } catch (e) {
+        debug(`Error loading features file from ${paths.CUSTOM_FILE} : ${e.message}`);
+        return {};
+    }
+})();
+
+function features() {
+    return {
+        dynamicDns: safe.query(gCustom, 'features.dynamicDns', true),
+        remoteSupport: safe.query(gCustom, 'features.support.remote', true),
+        subscription: safe.query(gCustom, 'features.subscription', true),
+        configureBackup: safe.query(gCustom, 'features.configureBackup', true)
+    };
+}