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2af9e2e125
- If the admin templates default.html or default-prod.html are missing, don't throw a 500 - Instead throw a well considered 400 error with extra help for what to do to fix it
64 lines
2.3 KiB
JavaScript
64 lines
2.3 KiB
JavaScript
const debug = require('@tryghost/debug')('web:admin:controller');
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const errors = require('@tryghost/errors');
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const tpl = require('@tryghost/tpl');
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const path = require('path');
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const fs = require('fs');
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const crypto = require('crypto');
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const config = require('../../../shared/config');
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const updateCheck = require('../../update-check');
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const messages = {
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templateError: {
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message: 'Unable to find admin template file {templatePath}',
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context: 'These template files are generated as part of the build process',
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help: 'Please see {link}'
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}
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};
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/**
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* @description Admin controller to handle /ghost/ requests.
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*
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* Every request to the admin panel will re-trigger the update check service.
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*
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* @param req
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* @param res
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*/
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module.exports = function adminController(req, res) {
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debug('index called');
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// CASE: trigger update check unit and let it run in background, don't block the admin rendering
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updateCheck();
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const defaultTemplate = config.get('env') === 'production' ? 'default-prod.html' : 'default.html';
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const templatePath = path.resolve(config.get('paths').adminViews, defaultTemplate);
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const headers = {};
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try {
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// Generate our own ETag header
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// `sendFile` by default uses filesize+lastmod date to generate an etag.
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// That doesn't work for admin templates because the filesize doesn't change between versions
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// and `npm pack` sets a fixed lastmod date for every file meaning the default etag never changes
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const fileBuffer = fs.readFileSync(templatePath);
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const hashSum = crypto.createHash('md5');
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hashSum.update(fileBuffer);
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headers.ETag = hashSum.digest('hex');
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if (config.get('adminFrameProtection')) {
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headers['X-Frame-Options'] = 'sameorigin';
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}
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res.sendFile(templatePath, {headers});
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} catch (error) {
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if (error.code === 'ENOENT') {
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throw new errors.IncorrectUsageError({
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message: tpl(messages.templateError.message, {templatePath}),
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context: tpl(messages.templateError.context),
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help: tpl(messages.templateError.help, {link: 'https://ghost.org/docs/install/source/'}),
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error: error
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});
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} else {
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throw error;
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}
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}
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};
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