如何正确设置helmet.js以解决CSP问题？

Question

当我启动我的express应用程序时，浏览器给我这个错误：

Refused to load the script 'http://localhost:1337/main.js' because it violates
the following Content Security Policy directive: "script-src unsafe-eval".
Note that 'script-src-elem' was not explicitly set, so 'script-src' is used as a fallback.

在我的index.js文件中，我设置了如下头盔：

// Set Content Security Policies
const scriptSources = ["'self'", "'unsafe-inline'", "'unsafe-eval'"];
const styleSources = ["'self'", "'unsafe-inline'"];
const connectSources = ["'self'"];

app.use(
  helmet.contentSecurityPolicy({
    defaultSrc: ["'self'"],
    scriptSrc: scriptSources,
    scriptSrcElem: scriptSources,
    styleSrc: styleSources,
    connectSrc: connectSources,
    reportUri: '/report-violation',
    reportOnly: false,
    safari5: false  
  })
);
app.use(helmet({
  contentSecurityPolicy: false,
}));

在.js文件中加载我的index.html，如下所示：

<script type="module" src="./main.js"></script>

这是我的GitHub回购：https://github.com/jgonzales394/fsn.pw

Answer 1

头盔维修员。这是因为您的指令需要嵌套在directives属性下。

例如：

app.use(
  helmet.contentSecurityPolicy({
    directives: {
      defaultSrc: ["'self'"],
      scriptSrc: scriptSources,
      // ...
    },
  })
)

Answer 2

好的，我设法让它正常工作。头盔允许我这样设置我的CSP：

app.use(
  helmet.contentSecurityPolicy({
    defaultSrc: ["'self'"],
    scriptSrc: scriptSources,
    scriptSrcElem: scriptSources,
    styleSrc: styleSources,
    connectSrc: connectSources,
    reportUri: '/report-violation',
    reportOnly: false,
    safari5: false  
  })
);

所以我的main.js文件是一个vue应用程序，我之前写的是这样的：

import * as Vue from './src/vue.esm-browser.js';

const App = Vue.createApp({
  data() {
    return {
      slug,
      url
    }
  },
  methods: {
    createUrl() {
      console.log(this.slug, this.url);
    }
  }
}).mount('#app');

我重写了代码，如下所示：

import { createApp, ref } from './src/vue.esm-browser.js';

const slug = ref('');
const url = ref('');

createApp({
 setup() {
   const createUrl = () => {
     console.log(slug.value, url.value);
   };

   return {
     slug,
     url,
     createUrl
   };
 }
}).mount('#app');

在我的html文件中，可以在不调用createUrl的情况下调用它。