Firefox webExtension - 重写HTTP POST响应中的 "redirectURL"。

Question

我正在为Firefox编写我的第一个webExtension。它的目标是一个网站上的一个特殊功能，基本上需要重写服务器响应中的 "redirectURL "值到HTTP POST中（我想让它在某些按钮被点击后停止刷新页面）。

我在这方面遇到了麻烦。到目前为止，我已经尝试了webRequest.onHeadersReceived，但 "redirectURL "值并不在头文件中。我还尝试了过滤ResponseData，但 "redirectURL "值也不在响应的内容中。我用浏览器开发工具捕获了完整的事务，以下是相关部分。

"response": {
          "status": 302,
          "statusText": "Found",
          "httpVersion": "HTTP/2.0",
          "headers": [
            {
              "name": "date",
              "value": "Fri, 05 Jul 2019 13:06:18 GMT"
            },
            {
              "name": "content-type",
              "value": "text/html; charset=utf-8"
            },
            {
              "name": "location",
              "value": "https://www.strava.com/clubs/2140/members"
            },
            {
              "name": "cache-control",
              "value": "no-cache, no-store"
            },
            {
              "name": "via",
              "value": "1.1 linkerd"
            },
            {
              "name": "x-download-options",
              "value": "noopen"
            },
            {
              "name": "pragma",
              "value": "no-cache"
            },
            {
              "name": "status",
              "value": "302 Found"
            },
            {
              "name": "expires",
              "value": "Sat, 01 Jan 2000 00:00:00 GMT"
            },
            {
              "name": "x-request-id",
              "value": "5ff9a2b9-e9b4-453e-9e4e-d42e1ffdd09c"
            },
            {
              "name": "referrer-policy",
              "value": "strict-origin-when-cross-origin"
            },
            {
              "name": "x-frame-options",
              "value": "SAMEORIGIN,DENY"
            },
            {
              "name": "x-content-type-options",
              "value": "nosniff"
            },
            {
              "name": "x-permitted-cross-domain-policies",
              "value": "none"
            },
            {
              "name": "x-xss-protection",
              "value": "1; mode=block"
            },
            {
              "name": "content-encoding",
              "value": "gzip"
            },
            {
              "name": "X-Firefox-Spdy",
              "value": "h2"
            }
          ],
          "cookies": [],
          "content": {
            "mimeType": "text/html; charset=utf-8",
            "size": 119109,
            "comment": "Response bodies are not included."
          },
          "redirectURL": "https://www.strava.com/clubs/1234/members", <-- I want to re-write this
          "headersSize": 597,
          "bodySize": 29832
        },

先谢谢你！

Answer 1

重定向URL在 location 头部. 你在HAR中标记的那一行只是表明浏览器采取的行动。

因此，你可以拦截响应，并改变所述头。

function modifyRedir(details)
{
  for (let header of details.responseHeaders) {
    if (header.name.toLowerCase() == "location")
    {
      header.value = "<some URL>";
    }
  }
  return {responseHeaders: details.responseHeaders};
}

browser.webRequest.onHeadersReceived.addListener(
  modifyRedir,
  {
    urls: ["<URL this should be applied to>"]
  },
  ["blocking", "responseHeaders"]
);

或者，你也可以直接覆盖重定向的内容。

function modifyRedir(details)
{
  return {redirectUrl: "<some URL>"};
}