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Update:Set Content-Security-Policy header to disallow iframes

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advplyr 2024-11-23 11:17:13 -06:00
parent d19bb909b3
commit f9aaeb3a34
1 changed files with 14 additions and 11 deletions
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25
server/Server.js
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@ -194,18 +194,21 @@ class Server {
const app = express()
/**
* @temporary
* This is necessary for the ebook & cover API endpoint in the mobile apps
* The mobile app ereader is using fetch api in Capacitor that is currently difficult to switch to native requests
* so we have to allow cors for specific origins to the /api/items/:id/ebook endpoint
* The cover image is fetched with XMLHttpRequest in the mobile apps to load into a canvas and extract colors
* @see https://ionicframework.com/docs/troubleshooting/cors
*
* Running in development allows cors to allow testing the mobile apps in the browser
* or env variable ALLOW_CORS = '1'
*/
app.use((req, res, next) => {
// Prevent clickjacking by disallowing iframes
res.setHeader('Content-Security-Policy', "frame-ancestors 'self'")
/**
* @temporary
* This is necessary for the ebook & cover API endpoint in the mobile apps
* The mobile app ereader is using fetch api in Capacitor that is currently difficult to switch to native requests
* so we have to allow cors for specific origins to the /api/items/:id/ebook endpoint
* The cover image is fetched with XMLHttpRequest in the mobile apps to load into a canvas and extract colors
* @see https://ionicframework.com/docs/troubleshooting/cors
*
* Running in development allows cors to allow testing the mobile apps in the browser
* or env variable ALLOW_CORS = '1'
*/
if (Logger.isDev || req.path.match(/\/api\/items\/([a-z0-9-]{36})\/(ebook|cover)(\/[0-9]+)?/)) {
const allowedOrigins = ['capacitor://localhost', 'http://localhost']
if (global.AllowCors || Logger.isDev || allowedOrigins.some((o) => o === req.get('origin'))) {