mirror of https://github.com/TryGhost/Ghost.git
86 lines
3.1 KiB
JavaScript
86 lines
3.1 KiB
JavaScript
var fs = require('fs-extra'),
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_ = require('lodash'),
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express = require('express'),
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url = require('url'),
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path = require('path'),
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debug = require('ghost-ignition').debug('custom-redirects'),
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config = require('../../config'),
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common = require('../../lib/common'),
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validation = require('../../data/validation'),
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customRedirectsRouter,
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_private = {};
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_private.registerRoutes = function registerRoutes() {
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debug('redirects loading');
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customRedirectsRouter = express.Router();
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try {
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var redirects = fs.readFileSync(path.join(config.getContentPath('data'), 'redirects.json'), 'utf-8');
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redirects = JSON.parse(redirects);
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validation.validateRedirects(redirects);
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_.each(redirects, function (redirect) {
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/**
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* always delete trailing slashes, doesn't matter if regex or not
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* Example:
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* - you define /my-blog-post-1/ as from property
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* - /my-blog-post-1 or /my-blog-post-1/ should work
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*/
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if (redirect.from.match(/\/$/)) {
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redirect.from = redirect.from.slice(0, -1);
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}
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if (redirect.from[redirect.from.length - 1] !== '$') {
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redirect.from += '\/?$';
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}
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debug('register', redirect.from);
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customRedirectsRouter.get(new RegExp(redirect.from), function (req, res) {
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var maxAge = redirect.permanent ? config.get('caching:customRedirects:maxAge') : 0,
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parsedUrl = url.parse(req.originalUrl);
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res.set({
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'Cache-Control': 'public, max-age=' + maxAge
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});
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res.redirect(redirect.permanent ? 301 : 302, url.format({
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pathname: parsedUrl.pathname.replace(new RegExp(redirect.from), redirect.to),
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search: parsedUrl.search
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}));
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});
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});
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} catch (err) {
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if (common.errors.utils.isIgnitionError(err)) {
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common.logging.error(err);
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} else if (err.code !== 'ENOENT') {
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common.logging.error(new common.errors.IncorrectUsageError({
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message: common.i18n.t('errors.middleware.redirects.register'),
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context: err.message,
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help: 'https://docs.ghost.org/v1/docs/redirects'
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}));
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}
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}
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debug('redirects loaded');
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};
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/**
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* - you can extend Ghost with a custom redirects file
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* - see https://github.com/TryGhost/Ghost/issues/7707 and https://docs.ghost.org/v1/docs/redirects
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* - file loads synchronously, because we need to register the routes before anything else
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*/
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exports.use = function use(siteApp) {
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_private.registerRoutes();
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// Recommended approach by express, see https://github.com/expressjs/express/issues/2596#issuecomment-81353034.
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// As soon as the express router get's re-instantiated, the old router instance is not used anymore.
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siteApp.use(function (req, res, next) {
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customRedirectsRouter(req, res, next);
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});
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};
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exports.reload = function reload() {
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_private.registerRoutes();
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};
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