From e63c50b4ae750073d76fca01c845a04d9c2ca9e5 Mon Sep 17 00:00:00 2001
From: Brian Hyder <brianhyder@gmail.com>
Date: Tue, 10 May 2016 19:28:44 -0400
Subject: [PATCH] Fixes #1036 - a bug that causes a crash when requesting
 public resources that don't exist

---
 include/http/request_handler.js | 31 +++++++++++++++++++++----------
 1 file changed, 21 insertions(+), 10 deletions(-)

diff --git a/include/http/request_handler.js b/include/http/request_handler.js
index 81b5bcf42..7ba13d6e3 100755
--- a/include/http/request_handler.js
+++ b/include/http/request_handler.js
@@ -71,6 +71,16 @@ module.exports = function RequestHandlerModule(pb) {
         'multipart/form-data': pb.FormBodyParser
     };
 
+    /**
+     * Provides the list of directories that are publicly available
+     * @private
+     * @static
+     * @readonly
+     * @property PUBLIC_ROUTE_PREFIXES
+     * @type {Array}
+     */
+    var PUBLIC_ROUTE_PREFIXES = ['/js/', '/css/', '/fonts/', '/img/', '/localization/', '/favicon.ico', '/docs/', '/bower_components/'];
+
     /**
      * The fallback theme (pencilblue)
      * @static
@@ -558,17 +568,19 @@ module.exports = function RequestHandlerModule(pb) {
      * Derives the locale and localization instance.
      * @method deriveLocalization
      * @param {Object} context
-     * @param {Object} context.session
+     * @param {Object} [context.session]
      * @param {String} [context.routeLocalization]
      */
     RequestHandler.prototype.deriveLocalization = function(context) {
         var opts = {};
 
         var sources = [
-            context.routeLocalization,
-            context.session.locale,
-            this.req.headers[pb.Localization.ACCEPT_LANG_HEADER]
+            context.routeLocalization
         ];
+        if (context.session) {
+            sources.push(context.session.locale);
+        }
+        sources.push(this.req.headers[pb.Localization.ACCEPT_LANG_HEADER]);
         if (this.siteObj) {
             opts.supported = Object.keys(this.siteObj.supportedLocales);
             sources.push(this.siteObj.defaultLocale);
@@ -596,8 +608,7 @@ module.exports = function RequestHandlerModule(pb) {
         var self = this;
         fs.readFile(absolutePath, function(err, content){
             if (err) {
-                self.serve404();
-                return;
+                return self.serve404();
             }
 
             //build response structure
@@ -657,9 +668,8 @@ module.exports = function RequestHandlerModule(pb) {
      * @return {Boolean} TRUE if mapped to a public resource directory, FALSE if not
      */
     RequestHandler.isPublicRoute = function(path){
-        var publicRoutes = ['/js/', '/css/', '/fonts/', '/img/', '/localization/', '/favicon.ico', '/docs/', '/bower_components/'];
-        for (var i = 0; i < publicRoutes.length; i++) {
-            if (path.indexOf(publicRoutes[i]) == 0) {
+        for (var i = 0; i < PUBLIC_ROUTE_PREFIXES.length; i++) {
+            if (path.indexOf(PUBLIC_ROUTE_PREFIXES[i]) == 0) {
                 return true;
             }
         }
@@ -714,11 +724,12 @@ module.exports = function RequestHandlerModule(pb) {
         getActiveTheme(function(error, activeTheme) {
 
             //build out params for handlers
+            self.localizationService = self.localizationService || self.deriveLocalization({});
             var params = {
                 mime: self.themeRoute && self.themeRoute.content_type ? self.themeRoute.content_type : 'text/html',
                 error: err,
                 request: self.req,
-                localization: self.localization,
+                localization: self.localizationService,
                 activeTheme: activeTheme,
                 reqHandler: self,
                 errorCount: self.errorCount