DouFree

Free you from DouBan restrictions

You will need to install an extension such as Tampermonkey, Greasemonkey or Violentmonkey to install this script.

You will need to install an extension such as Tampermonkey to install this script.

You will need to install an extension such as Tampermonkey or Violentmonkey to install this script.

You will need to install an extension such as Tampermonkey or Userscripts to install this script.

You will need to install an extension such as Tampermonkey to install this script.

You will need to install a user script manager extension to install this script.

(I already have a user script manager, let me install it!)

You will need to install an extension such as Stylus to install this style.

You will need to install an extension such as Stylus to install this style.

You will need to install an extension such as Stylus to install this style.

You will need to install a user style manager extension to install this style.

You will need to install a user style manager extension to install this style.

You will need to install a user style manager extension to install this style.

(I already have a user style manager, let me install it!)

// ==UserScript==
// @name         DouFree
// @namespace    https://github.com/Sec-ant/
// @version      0.14.0
// @author       豆泥@豆瓣
// @description  Free you from DouBan restrictions
// @license      MIT
// @icon         https://www.douban.com/favicon.ico
// @homepage     https://github.com/Sec-ant/doufree
// @homepageURL  https://github.com/Sec-ant/doufree
// @source       https://github.com/Sec-ant/doufree.git
// @supportURL   https://github.com/Sec-ant/doufree/issues
// @match        https://www.douban.com/*
// @match        https://fastly.jsdelivr.net/*
// @webRequest   {"selector":"*/cuphead/sns-static/status/index.*.js","action":{"redirect":"https://fastly.jsdelivr.net/npm/[email protected]/dist/assets/index.3291e.patch.js"}}
// @grant        none
// @run-at       document-start
// ==/UserScript==

(function () {
  'use strict';

  function isValidUrl(str) {
    let url;
    try {
      url = new URL(str);
    } catch {
      return false;
    }
    return ["http:", "https:", "file:", "ftp:"].includes(url.protocol);
  }
  function patchXMLHttpRequest() {
    const OLD_XHR = window.XMLHttpRequest;
    window.XMLHttpRequest = class extends XMLHttpRequest {
      constructor() {
        super();
        return new Proxy(new OLD_XHR(), {
          set(xhr, key, value) {
            if (key in xhr) {
              xhr[key] = value;
            }
            return true;
          },
          get(xhr, key) {
            switch (key) {
              case "responseText": {
                const { responseURL } = xhr;
                switch (true) {
                  case /https:\/\/www\.douban\.com\/j\/status\/comments\?sid=\d+&resp_type=c_dict/.test(
                    responseURL
                  ):
                    return xhr.responseText.replace(
                      /"url":"([^"]+?)","expanded_url":"([^"]+?)"/g,
                      '"url":"$2","expanded_url":"$2"'
                    );
                  case /https:\/\/www\.douban\.com\/j\/(group\/check_content_clean|check_clean_content)/.test(
                    responseURL
                  ):
                    return '{"r":0}';
                  default:
                    return xhr.responseText;
                }
              }
              default: {
                const value = xhr[key];
                if (typeof value === "function") {
                  return (...args) => value.apply(xhr, args);
                }
                return value;
              }
            }
          }
        });
      }
    };
  }
  function expandShortUrl() {
    for (const a of [
      ...document.querySelectorAll(
        'a[href^="https://douc.cc/"]'
      )
    ]) {
      const { href, title, textContent } = a;
      if (title && isValidUrl(title)) {
        a.href = title;
        if (textContent === href) {
          a.textContent = title;
        }
      }
    }
  }
  function replaceDouListUrls() {
    for (const div of [
      ...document.querySelectorAll(
        'div[data-target-type="doulist"]'
      )
    ]) {
      const dataObjectId = div.getAttribute("data-object-id");
      if (dataObjectId === null) {
        return;
      }
      let url;
      switch (div.getAttribute("data-object-kind")) {
        case "1011":
          url = `https://www.douban.com/event/${dataObjectId}/`;
          break;
        case "1012":
          url = `https://www.douban.com/review/${dataObjectId}/`;
          break;
        case "1013":
          url = `https://www.douban.com/group/topic/${dataObjectId}/`;
          break;
        case "1015":
          url = `https://www.douban.com/note/${dataObjectId}/`;
          break;
        case "3055":
          url = `https://www.douban.com/people/x/status/${dataObjectId}/`;
          break;
        default:
          return;
      }
      const linkElement = div.querySelector(
        'div.title > a, p.text > a[href^="https://www.douban.com/doulist"]'
      );
      if (!linkElement) {
        return;
      }
      linkElement.href = url;
      linkElement.target = "_black";
    }
  }
  function removeUnderscoreISearchParam() {
    const replaceStateOriginal = window.history.replaceState;
    window.history.replaceState = (_, __, url) => {
      if (url) {
        const urlObj = new URL(url);
        const urlSearchParams = urlObj.searchParams;
        urlSearchParams.delete("_i");
        urlObj.hash = urlObj.hash.replace(/(&|\?)_i=.*$/, "");
        url = urlObj.toString();
      }
      return replaceStateOriginal.call(window.history, _, __, url);
    };
  }
  function handleWindowLoaded() {
    expandShortUrl();
    replaceDouListUrls();
    window.removeEventListener("load", handleWindowLoaded);
  }
  if (window.location.host === "www.douban.com") {
    removeUnderscoreISearchParam();
    patchXMLHttpRequest();
    window.addEventListener("load", handleWindowLoaded);
  }

})();