Merge pull request #1003 from Pita/express-v3

Upgrade Express to v3 [proposal]

doc/api/hooks_server-side.md

@@ -49,7 +49,8 @@ Called from: src/node/server.js
 
 Things in context:
 
-1. app - the main application object (helpful for adding new paths and such)
+1. app - the main express application object (helpful for adding new paths and such)
+2. server - the http server object
 
 This hook gets called after the application object has been created, but before it starts listening. This is similar to the expressConfigure hook, but it's not guaranteed that the application object will have all relevant configuration variables.
 
@@ -71,6 +72,7 @@ Things in context:
 
 1. app - the application object
 2. io - the socketio object
+3. server - the http server object
 
 I have no idea what this is useful for, someone else will have to add this description.
 

src/node/hooks/express.js

@@ -1,4 +1,5 @@
 var hooks = require("ep_etherpad-lite/static/js/pluginfw/hooks");
+var http = require('http');
 var express = require('express');
 var settings = require('../utils/Settings');
 var fs = require('fs');
@@ -42,22 +43,24 @@ exports.createServer = function () {
 }
 
 exports.restartServer = function () {
+
   if (server) {
     console.log("Restarting express server");
     server.close();
   }
 
-  server = express.createServer();
+  var app = express(); // New syntax for express v3
+  server = http.createServer(app);
 
-  server.use(function (req, res, next) {
+  app.use(function (req, res, next) {
     res.header("Server", serverName);
     next();
   });
 
-  server.configure(function() {
-    hooks.callAll("expressConfigure", {"app": server});
+  app.configure(function() {
+    hooks.callAll("expressConfigure", {"app": app});
   });
-  hooks.callAll("expressCreateServer", {"app": server});
+  hooks.callAll("expressCreateServer", {"app": app, "server": server});
 
   server.listen(settings.port, settings.ip);
-}
+}

src/node/hooks/express/adminplugins.js

@@ -12,14 +12,10 @@ exports.expressCreateServer = function (hook_name, args, cb) {
       errors: [],
     };
 
-    res.send(eejs.require(
-      "ep_etherpad-lite/templates/admin/plugins.html",
-      render_args), {});
+    res.send( eejs.require("ep_etherpad-lite/templates/admin/plugins.html", render_args) );
   });
   args.app.get('/admin/plugins/info', function(req, res) {
-    res.send(eejs.require(
-      "ep_etherpad-lite/templates/admin/plugins-info.html",
-        {}), {});
+    res.send( eejs.require("ep_etherpad-lite/templates/admin/plugins-info.html", {}) );
   });
 }
 

src/node/hooks/express/errorhandling.js

@@ -16,9 +16,6 @@ exports.gracefulShutdown = function(err) {
 
   console.log("graceful shutdown...");
 
-  //stop the http server
-  exports.app.close();
-
   //do the db shutdown
   db.db.doShutdown(function() {
     console.log("db sucessfully closed.");
@@ -35,10 +32,14 @@ exports.gracefulShutdown = function(err) {
 exports.expressCreateServer = function (hook_name, args, cb) {
   exports.app = args.app;
 
-  args.app.error(function(err, req, res, next){
-    res.send(500);
-    console.error(err.stack ? err.stack : err.toString());
-  });
+  // Handle errors
+  args.app.use(function(err, req, res, next){
+    // if an error occurs Connect will pass it down
+    // through these "error-handling" middleware
+    // allowing you to respond however you like
+    res.send(500, { error: 'Sorry, something bad happened!' });
+    console.error(err.stack? err.stack : err.toString());
+  })
 
   //connect graceful shutdown with sigint and uncaughtexception
   if(os.type().indexOf("Windows") == -1) {

src/node/hooks/express/padreadonly.js

@@ -56,7 +56,7 @@ exports.expressCreateServer = function (hook_name, args, cb) {
 	ERR(err);
 
       if(err == "notfound")
-	res.send('404 - Not Found', 404);
+	res.send(404, '404 - Not Found');
       else
 	res.send(html);
     });

src/node/hooks/express/padurlsanitize.js

@@ -7,7 +7,7 @@ exports.expressCreateServer = function (hook_name, args, cb) {
     //ensure the padname is valid and the url doesn't end with a /
     if(!padManager.isValidPadId(padId) || /\/$/.test(req.url))
     {
-      res.send('Such a padname is forbidden', 404);
+      res.send(404, 'Such a padname is forbidden');
     }
     else
     {
@@ -19,7 +19,7 @@ exports.expressCreateServer = function (hook_name, args, cb) {
           var query = url.parse(req.url).query;
           if ( query ) real_url += '?' + query;
 	  res.header('Location', real_url);
-	  res.send('You should be redirected to <a href="' + real_url + '">' + real_url + '</a>', 302);
+	  res.send(302, 'You should be redirected to <a href="' + real_url + '">' + real_url + '</a>');
 	}
 	//the pad id was fine, so just render it
 	else

src/node/hooks/express/socketio.js

@@ -3,6 +3,7 @@ var socketio = require('socket.io');
 var settings = require('../../utils/Settings');
 var socketIORouter = require("../../handler/SocketIORouter");
 var hooks = require("ep_etherpad-lite/static/js/pluginfw/hooks");
+var webaccess = require("ep_etherpad-lite/node/hooks/express/webaccess");
 
 var padMessageHandler = require("../../handler/PadMessageHandler");
 
@@ -10,19 +11,28 @@ var connect = require('connect');
  
 exports.expressCreateServer = function (hook_name, args, cb) {
   //init socket.io and redirect all requests to the MessageHandler
-  var io = socketio.listen(args.app);
+  var io = socketio.listen(args.server);
 
   /* Require an express session cookie to be present, and load the
    * session. See http://www.danielbaulig.de/socket-ioexpress for more
    * info */
   io.set('authorization', function (data, accept) {
     if (!data.headers.cookie) return accept('No session cookie transmitted.', false);
-    data.cookie = connect.utils.parseCookie(data.headers.cookie);
-    data.sessionID = data.cookie.express_sid;
-    args.app.sessionStore.get(data.sessionID, function (err, session) {
-      if (err || !session) return accept('Bad session / session has expired', false);
-      data.session = new connect.middleware.session.Session(data, session);
-      accept(null, true);
+
+    // Use connect's cookie parser, because it knows how to parse signed cookies
+    connect.cookieParser(webaccess.secret)(data, {}, function(err){
+      if(err) {
+        console.error(err);
+        accept("Couldn't parse request cookies. ", false);
+        return;
+      }
+
+      data.sessionID = data.signedCookies.express_sid;
+      args.app.sessionStore.get(data.sessionID, function (err, session) {
+        if (err || !session) return accept('Bad session / session has expired', false);
+        data.session = new connect.middleware.session.Session(data, session);
+        accept(null, true);
+      });
     });
   });
 
@@ -62,5 +72,5 @@ exports.expressCreateServer = function (hook_name, args, cb) {
   socketIORouter.setSocketIO(io);
   socketIORouter.addComponent("pad", padMessageHandler);
 
-  hooks.callAll("socketio", {"app": args.app, "io": io});
+  hooks.callAll("socketio", {"app": args.app, "io": io, "server": args.server});
 }

src/node/hooks/express/webaccess.js

@@ -56,10 +56,10 @@ exports.basicAuth = function (req, res, next) {
       res.header('WWW-Authenticate', 'Basic realm="Protected Area"');
       if (req.headers.authorization) {
         setTimeout(function () {
-          res.send('Authentication required', 401);
+          res.send(401, 'Authentication required');
         }, 1000);
       } else {
-        res.send('Authentication required', 401);
+        res.send(401, 'Authentication required');
       }
     }));
   }
@@ -88,14 +88,13 @@ exports.basicAuth = function (req, res, next) {
   });
 }
 
-var secret = null;
+exports.secret = null;
 
 exports.expressConfigure = function (hook_name, args, cb) {
   // If the log level specified in the config file is WARN or ERROR the application server never starts listening to requests as reported in issue #158.
   // Not installing the log4js connect logger when the log level has a higher severity than INFO since it would not log at that level anyway.
   if (!(settings.loglevel === "WARN" || settings.loglevel == "ERROR"))
     args.app.use(log4js.connectLogger(httpLogger, { level: log4js.levels.INFO, format: ':status, :method :url'}));
-  args.app.use(express.cookieParser());
 
   /* Do not let express create the session, so that we can retain a
    * reference to it for socket.io to use. Also, set the key (cookie
@@ -104,13 +103,14 @@ exports.expressConfigure = function (hook_name, args, cb) {
 
   if (!exports.sessionStore) {
     exports.sessionStore = new express.session.MemoryStore();
-    secret = randomString(32);
+    exports.secret = randomString(32);
   }
+  
+  args.app.use(express.cookieParser(exports.secret));
 
   args.app.sessionStore = exports.sessionStore;
   args.app.use(express.session({store: args.app.sessionStore,
-                                key: 'express_sid',
-                                secret: secret}));
+                                key: 'express_sid' }));
 
   args.app.use(exports.basicAuth);
 }

src/node/padaccess.js

@@ -15,7 +15,7 @@ module.exports = function (req, res, callback) {
       callback();
     //no access
     } else {
-      res.send("403 - Can't touch this", 403);
+      res.send(403, "403 - Can't touch this");
     }
   });
 }

src/node/server.js

@@ -21,8 +21,15 @@
  * limitations under the License.
  */
 
+// set up logger
 var log4js = require('log4js');
+log4js.replaceConsole();
+
 var settings = require('./utils/Settings');
+
+//set loglevel
+log4js.setGlobalLogLevel(settings.loglevel);
+
 var db = require('./db/DB');
 var async = require('async');
 var plugins = require("ep_etherpad-lite/static/js/pluginfw/plugins");
@@ -31,9 +38,6 @@ var npm = require("npm/lib/npm.js");
 
 hooks.plugins = plugins;
 
-//set loglevel
-log4js.setGlobalLogLevel(settings.loglevel);
-
 async.waterfall([
   //initalize the database
   function (callback)

src/package.json

@@ -17,12 +17,12 @@
                       "socket.io"           : "0.9.x",
                       "ueberDB"             : "0.1.7",
                       "async"               : "0.1.x",
-                      "express"             : "2.5.x",
-                      "connect"             : "1.x",
+                      "express"             : "3.x",
+                      "connect"             : "2.4.x",
                       "clean-css"           : "0.3.2",
                       "uglify-js"           : "1.2.5",
                       "formidable"          : "1.0.9",
-                      "log4js"              : "0.4.1",
+                      "log4js"              : "0.5.x",
                       "jsdom-nocontextifiy" : "0.2.10",
                       "async-stacktrace"    : "0.0.2",
                       "npm"                 : "1.1.24",