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javascript - Express/HelmetJS/CSP 和 Gzip Assets

转载 作者:行者123 更新时间:2023-11-30 20:30:34 24 4
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我有一个托管 React 网络应用程序的 Express 应用程序。我正在使用 HelmetJS 来帮助保护我的 Express 应用。

我也会在可能的情况下返回 gzipped Assets 。但是,自从将 Helmet 添加到 Express 后,我现在在尝试加载我的托管 Web 应用程序时收到以下错误

Refused to execute script from 'http://localhost:3000/static/main.8bbec8980664a60606b0.min.js' because its MIME type ('application/gzip') is not executable, and strict MIME type checking is enabled.

我的 Express 应用如下所示...

const express = require('express');
const helmet = require('helmet');
const path = require('path');
const app = express();

const POLICY_NONE = ["'none'"];
const POLICY_SELF = ["'self'"];

app.use(helmet());
app.use(helmet.referrerPolicy({ policy: 'same-origin' }))
app.use(
helmet.contentSecurityPolicy({
directives: {
defaultSrc: POLICY_SELF,
connectSrc: POLICY_SELF,
fontSrc: POLICY_SELF,
imgSrc: POLICY_SELF,
manifestSrc: POLICY_SELF,
mediaSrc: POLICY_SELF,
objectSrc: POLICY_NONE,
scriptSrc: POLICY_SELF,
styleSrc: POLICY_SELF,
workerSrc: POLICY_SELF,
formAction: POLICY_SELF,
frameAncestors: POLICY_NONE,
blockAllMixedContent: true,
upgradeInsecureRequests: false,
}
})
);

app.use((req, res, next) => {
if (/\.(js|css)$/.test(req.url)) {
req.url = req.url + '.gz';
res.set('Content-Encoding', 'gzip');
}
next();
});
app.use(express.static(path.resolve(__dirname, '../dist')));

app.get('/healthz', (req, res) => res.send('OK'));
app.get('*', (req, res) =>
res.sendFile(path.resolve(__dirname, '../dist/index.html'))
);

const PORT = process.env.SERVER_PORT || 3000;
const HOST = process.env.SERVER_HOST || '127.0.0.1';

app.listen(PORT);
console.log(`API started on ${HOST}:${PORT}`);

dist文件夹中正在渲染的index html如下

<!DOCTYPE html>
<html lang="en">

<head>
<meta charset="UTF-8">
<meta name="viewport" content="width=device-width, initial-scale=1">

<meta http-equiv="X-UA-Compatible" content="ie=edge">

<title>
Web App
</title>
</head>

<body>
<div id="root"></div>
<script type="text/javascript" src="static/main.8bbec8980664a60606b0.min.js"></script></body>

</html>

如果我禁用 Helm ,这会很好用。如何配置 Helm 以允许加载此文件?

最佳答案

您可以使用 express-static-gzip包裹。它是一个 Express 中间件。它负责设置 Content-Type header 和其他事情,例如检查浏览器接受哪种编码。

例子:

var express = require("express");
var expressStaticGzip = require("express-static-gzip");
var app = express();

app.use("/", expressStaticGzip("/my/rootFolder/"));

关于javascript - Express/HelmetJS/CSP 和 Gzip Assets ,我们在Stack Overflow上找到一个类似的问题: https://stackoverflow.com/questions/50376467/

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