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301 lines
10 KiB
JavaScript
301 lines
10 KiB
JavaScript
// # Custom Middleware
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// The following custom middleware functions cannot yet be unit tested, and as such are kept separate from
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// the testable custom middleware functions in middleware.js
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var middleware = require('./middleware'),
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express = require('express'),
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_ = require('lodash'),
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url = require('url'),
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when = require('when'),
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slashes = require('connect-slashes'),
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errors = require('../errorHandling'),
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api = require('../api'),
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fs = require('fs'),
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path = require('path'),
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hbs = require('express-hbs'),
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config = require('../config'),
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storage = require('../storage'),
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packageInfo = require('../../../package.json'),
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BSStore = require('../bookshelf-session'),
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models = require('../models'),
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expressServer,
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ONE_HOUR_S = 60 * 60,
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ONE_YEAR_S = 365 * 24 * ONE_HOUR_S,
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ONE_HOUR_MS = ONE_HOUR_S * 1000,
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ONE_YEAR_MS = 365 * 24 * ONE_HOUR_MS;
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// ##Custom Middleware
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// ### GhostLocals Middleware
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// Expose the standard locals that every external page should have available,
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// separating between the theme and the admin
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function ghostLocals(req, res, next) {
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// Make sure we have a locals value.
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res.locals = res.locals || {};
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res.locals.version = packageInfo.version;
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// relative path from the URL, not including subdir
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res.locals.relativeUrl = req.path.replace(config.paths().subdir, '');
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if (res.isAdmin) {
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res.locals.csrfToken = req.csrfToken();
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when.all([
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api.users.read({id: req.session.user}),
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api.notifications.browse()
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]).then(function (values) {
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var currentUser = values[0],
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notifications = values[1];
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_.extend(res.locals, {
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currentUser: {
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name: currentUser.name,
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email: currentUser.email,
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image: currentUser.image
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},
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messages: notifications
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});
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next();
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}).otherwise(function () {
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// Only show passive notifications
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api.notifications.browse().then(function (notifications) {
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_.extend(res.locals, {
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messages: _.reject(notifications, function (notification) {
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return notification.status !== 'passive';
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})
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});
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next();
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});
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});
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} else {
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next();
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}
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}
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// ### InitViews Middleware
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// Initialise Theme or Admin Views
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function initViews(req, res, next) {
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/*jslint unparam:true*/
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if (!res.isAdmin) {
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hbs.updateTemplateOptions({ data: {blog: config.theme()} });
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expressServer.engine('hbs', expressServer.get('theme view engine'));
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expressServer.set('views', path.join(config.paths().themePath, expressServer.get('activeTheme')));
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} else {
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expressServer.engine('hbs', expressServer.get('admin view engine'));
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expressServer.set('views', config.paths().adminViews);
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}
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next();
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}
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// ### Activate Theme
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// Helper for manageAdminAndTheme
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function activateTheme(activeTheme) {
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var hbsOptions,
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themePartials = path.join(config.paths().themePath, activeTheme, 'partials'),
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stackLocation = _.indexOf(expressServer.stack, _.find(expressServer.stack, function (stackItem) {
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return stackItem.route === config.paths().subdir && stackItem.handle.name === 'settingEnabled';
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}));
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// clear the view cache
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expressServer.cache = {};
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expressServer.disable(expressServer.get('activeTheme'));
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expressServer.set('activeTheme', activeTheme);
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expressServer.enable(expressServer.get('activeTheme'));
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if (stackLocation) {
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expressServer.stack[stackLocation].handle = middleware.whenEnabled(expressServer.get('activeTheme'), middleware.staticTheme());
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}
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// set view engine
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hbsOptions = { partialsDir: [ config.paths().helperTemplates ] };
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fs.stat(themePartials, function (err, stats) {
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// Check that the theme has a partials directory before trying to use it
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if (!err && stats && stats.isDirectory()) {
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hbsOptions.partialsDir.push(themePartials);
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}
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});
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expressServer.set('theme view engine', hbs.express3(hbsOptions));
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// Update user error template
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errors.updateActiveTheme(activeTheme, config.paths().availableThemes[activeTheme].hasOwnProperty('error'));
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}
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// ### ManageAdminAndTheme Middleware
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// Uses the URL to detect whether this response should be an admin response
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// This is used to ensure the right content is served, and is not for security purposes
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function manageAdminAndTheme(req, res, next) {
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res.isAdmin = req.url.lastIndexOf(config.paths().subdir + '/ghost/', 0) === 0;
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if (res.isAdmin) {
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expressServer.enable('admin');
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expressServer.disable(expressServer.get('activeTheme'));
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} else {
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expressServer.enable(expressServer.get('activeTheme'));
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expressServer.disable('admin');
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}
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api.settings.read('activeTheme').then(function (activeTheme) {
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// Check if the theme changed
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if (activeTheme.value !== expressServer.get('activeTheme')) {
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// Change theme
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if (!config.paths().availableThemes.hasOwnProperty(activeTheme.value)) {
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if (!res.isAdmin) {
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// Throw an error if the theme is not available, but not on the admin UI
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return errors.throwError('The currently active theme ' + activeTheme.value + ' is missing.');
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}
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} else {
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activateTheme(activeTheme.value);
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}
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}
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next();
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}).otherwise(function (err) {
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// Trying to start up without the active theme present, setup a simple hbs instance
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// and render an error page straight away.
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expressServer.engine('hbs', hbs.express3());
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next(err);
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});
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}
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// Redirect to signup if no users are currently created
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function redirectToSignup(req, res, next) {
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/*jslint unparam:true*/
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api.users.browse().then(function (users) {
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if (users.length === 0) {
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return res.redirect(config.paths().subdir + '/ghost/signup/');
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}
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next();
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}).otherwise(function (err) {
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return next(new Error(err));
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});
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}
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function isSSLrequired(isAdmin) {
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var forceSSL = url.parse(config().url).protocol === 'https:' ? true : false,
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forceAdminSSL = (isAdmin && config().forceAdminSSL);
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if (forceSSL || forceAdminSSL) {
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return true;
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}
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return false;
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}
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// Check to see if we should use SSL
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// and redirect if needed
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function checkSSL(req, res, next) {
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if (isSSLrequired(res.isAdmin)) {
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if (!req.secure) {
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return res.redirect(301, url.format({
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protocol: 'https:',
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hostname: url.parse(config().url).hostname,
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pathname: req.path,
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query: req.query
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}));
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}
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}
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next();
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}
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module.exports = function (server, dbHash) {
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var subdir = config.paths().subdir,
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corePath = config.paths().corePath,
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cookie;
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// Cache express server instance
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expressServer = server;
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middleware.cacheServer(expressServer);
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// Make sure 'req.secure' is valid for proxied requests
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// (X-Forwarded-Proto header will be checked, if present)
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expressServer.enable('trust proxy');
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// Logging configuration
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if (expressServer.get('env') !== 'development') {
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expressServer.use(express.logger());
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} else {
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expressServer.use(express.logger('dev'));
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}
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// Favicon
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expressServer.use(subdir, express.favicon(corePath + '/shared/favicon.ico'));
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// Static assets
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expressServer.use(subdir + '/shared', express['static'](path.join(corePath, '/shared'), {maxAge: ONE_HOUR_MS}));
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expressServer.use(subdir + '/content/images', storage.get_storage().serve());
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expressServer.use(subdir + '/ghost/scripts', express['static'](path.join(corePath, '/built/scripts'), {maxAge: ONE_YEAR_MS}));
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// First determine whether we're serving admin or theme content
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expressServer.use(manageAdminAndTheme);
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// Admin only config
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expressServer.use(subdir + '/ghost', middleware.whenEnabled('admin', express['static'](path.join(corePath, '/client/assets'), {maxAge: ONE_YEAR_MS})));
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// Force SSL
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// NOTE: Importantly this is _after_ the check above for admin-theme static resources,
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// which do not need HTTPS. In fact, if HTTPS is forced on them, then 404 page might
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// not display properly when HTTPS is not available!
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expressServer.use(checkSSL);
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// Theme only config
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expressServer.use(subdir, middleware.whenEnabled(expressServer.get('activeTheme'), middleware.staticTheme()));
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// Add in all trailing slashes
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expressServer.use(slashes(true, {headers: {'Cache-Control': 'public, max-age=' + ONE_YEAR_S}}));
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// Body parsing
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expressServer.use(express.json());
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expressServer.use(express.urlencoded());
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// ### Sessions
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// we need the trailing slash in the cookie path. Session handling *must* be after the slash handling
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cookie = {
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path: subdir + '/ghost/',
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maxAge: 12 * ONE_HOUR_MS
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};
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// if SSL is forced, add secure flag to cookie
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// parameter is true, since cookie is used with admin only
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if (isSSLrequired(true)) {
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cookie.secure = true;
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}
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expressServer.use(express.cookieParser());
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expressServer.use(express.session({
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store: new BSStore(models),
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proxy: true,
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secret: dbHash,
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cookie: cookie
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}));
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// enable express csrf protection
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expressServer.use(middleware.conditionalCSRF);
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// local data
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expressServer.use(ghostLocals);
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// So on every request we actually clean out redundant passive notifications from the server side
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expressServer.use(middleware.cleanNotifications);
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// Initialise the views
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expressServer.use(initViews);
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// ### Caching
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expressServer.use(middleware.cacheControl('public'));
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expressServer.use('/api/', middleware.cacheControl('private'));
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expressServer.use('/ghost/', middleware.cacheControl('private'));
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// ### Routing
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expressServer.use(subdir, expressServer.router);
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// ### Error handling
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// 404 Handler
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expressServer.use(errors.error404);
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// 500 Handler
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expressServer.use(errors.error500);
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};
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// Export middleware functions directly
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module.exports.middleware = middleware;
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// Expose middleware functions in this file as well
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module.exports.middleware.redirectToSignup = redirectToSignup;
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