Fix CSP issues for missing files (404)

customize.dist/translations/messages.fr.js

@@ -618,7 +618,7 @@ define(function () {
     out.upload_mustLogin = "Vous devez vous connecter pour importer un fichier";
     out.download_button = "Déchiffrer et télécharger";
     out.download_mt_button = "Télécharger";
-    out.download_resourceNotAvailable = "Le fichier demandé n'est pas disponible...";
+    out.download_resourceNotAvailable = "Le fichier demandé n'est pas disponible... Appuyez sur Échap pour continuer.";
 
     out.todo_title = "CryptTodo";
     out.todo_newTodoNamePlaceholder = "Décrivez votre tâche...";

customize.dist/translations/messages.js

@@ -622,7 +622,7 @@ define(function () {
     out.upload_mustLogin = "You must be logged in to upload files";
     out.download_button = "Decrypt & Download";
     out.download_mt_button = "Download";
-    out.download_resourceNotAvailable = "The requested resource was not available...";
+    out.download_resourceNotAvailable = "The requested resource was not available... Press Esc to continue.";
 
     out.todo_title = "CryptTodo";
     out.todo_newTodoNamePlaceholder = "Describe your task...";

www/file/file-crypto.js

@@ -65,6 +65,7 @@ define([
         xhr.setRequestHeader('Range', 'bytes=0-1');
         xhr.responseType = 'arraybuffer';
 
+        xhr.onerror= function () { return CB('XHR_ERROR'); };
         xhr.onload = function () {
             if (/^4/.test('' + this.status)) { return CB('XHR_ERROR'); }
             var res = new Uint8Array(xhr.response);

www/file/inner.js

@@ -95,7 +95,9 @@ define([
             FileCrypto.fetchDecryptedMetadata(src, key, function (e, metadata) {
                 if (e) {
                     if (e === 'XHR_ERROR') {
-                        return void UI.errorLoadingScreen(Messages.download_resourceNotAvailable);
+                        return void UI.errorLoadingScreen(Messages.download_resourceNotAvailable, false, function () {
+                            common.gotoURL('/file/');
+                        });
                     }
                     return void console.error(e);
                 }