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hookFetch

only hookFetch

目前为 2023-05-04 提交的版本。查看 最新版本。

此脚本不应直接安装，它是一个供其他脚本使用的外部库。如果您需要使用该库，请在脚本元属性加入：// @require https://update.cn-greasyfork.org/scripts/465483/1185275/hookFetch.js 

  1. (() => {
  2.     var unsafeWindow = window.unsafeWindow || document.defaultView || window;
  3.     if (unsafeWindow['__hookRequest__'] != null) {
  4.         return;
  5.     }
  6.     var globalVariable = new Map();
  7.     var FetchMapList = new Map();
  8.     var XhrMapList = new Map();
  9.  
  10.     function deliveryTask(callbackList, _object, period) {
  11.         let newObject = _object;
  12.         for (let i = 0; i < callbackList.length; i++) {
  13.             let tempObject = null;
  14.             try {
  15.                 tempObject = callbackList[i](newObject, period);
  16.             } catch (e) {
  17.                 new Error(e);
  18.             }
  19.             if (tempObject == null) {
  20.                 continue;
  21.             }
  22.             newObject = tempObject;
  23.         }
  24.         return newObject;
  25.     }
  26.  
  27.     function hookFetch() {
  28.         const originalFetch = unsafeWindow.fetch;
  29.         globalVariable.set('Fetch', originalFetch);
  30.         unsafeWindow.fetch = (...args) => {
  31.             let U = args[0];
  32.             if (U.indexOf('http') == -1) {
  33.                 if (U[0] !== '/') {
  34.                     let pathname = new URL(location.href).pathname;
  35.                     U = pathname + U;
  36.                 }
  37.                 U = location.origin + U;
  38.             }
  39.             let apply = null;
  40.             (() => {
  41.                 let url = new URL(U),
  42.                     pathname = url.pathname,
  43.                     callback = FetchMapList.get(pathname);
  44.                 if (callback == null) return;
  45.                 if (callback.length === 0) return;
  46.                 let newObject = deliveryTask(callback, { args }, 'preRequest');
  47.                 if (newObject && newObject.args) {
  48.                     args = newObject.args;
  49.                 }
  50.                 apply = originalFetch.apply(this, args);
  51.                 apply.then((response) => {
  52.                     let text = response.text,
  53.                         json = response.json;
  54.                     response.text = () => {
  55.                         return text.apply(response).then((text) => {
  56.                             let _object = deliveryTask(callback, { text, args }, 'done');
  57.                             if (_object && _object.text) {
  58.                                 text = _object.text;
  59.                             }
  60.                             return text;
  61.                         });
  62.                     };
  63.                     response.json = () => {
  64.                         return json.apply(response).then((json) => {
  65.                             let text = JSON.stringify(json);
  66.                             let _object = deliveryTask(callback, { text, args }, 'done');
  67.                             if (_object && _object.text) {
  68.                                 text = _object.text;
  69.                                 return JSON.parse(text);
  70.                             }
  71.                             return json;
  72.                         });
  73.                     };
  74.                 });
  75.             })();
  76.             if (apply == null) {
  77.                 apply = originalFetch.apply(this, args);
  78.             }
  79.             return apply;
  80.         };
  81.     }
  82.  
  83.     function hookXhr() {
  84.         const XHRProxy = new Proxy(unsafeWindow.XMLHttpRequest, {
  85.             construct(target, args) {
  86.                 const xhr = new target(...args);
  87.                 const originalOpen = xhr.open;
  88.                 const originalSend = xhr.send;
  89.                 xhr.open = function () {
  90.                     return originalOpen.apply(xhr, arguments);
  91.                 };
  92.                 xhr.send = function () {
  93.                     let o = function (args) {
  94.                         return originalSend.apply(xhr, args);
  95.                     };
  96.                     let args = arguments;
  97.                     let U = xhr.responseURL;
  98.                     if (U.indexOf('http') == -1) {
  99.                         if (U[0] !== '/') {
  100.                             let pathname = new URL(location.href).pathname;
  101.                             U = pathname + U;
  102.                         }
  103.                         U = location.origin + U;
  104.                     }
  105.                     let pathname = new URL(U).pathname;
  106.                     let callback = XhrMapList.get(pathname);
  107.                     if (callback == null) return o(args);
  108.                     if (callback.length === 0) return o(args);
  109.                     let newObject = deliveryTask(callback, { args }, 'preRequest');
  110.                     if (newObject && newObject.args) {
  111.                         args = newObject.args;
  112.                     }
  113.                     const onReadyStateChangeOriginal = xhr.onreadystatechange;
  114.                     xhr.onreadystatechange = function () {
  115.                         if (xhr.readyState === 4 && xhr.status === 200) {
  116.                             let text = xhr.responseText;
  117.                             let newObject = deliveryTask(callback, { text, args }, 'done');
  118.                             if (newObject && newObject.text) {
  119.                                 xhr.responseText = newObject.text;
  120.                             }
  121.                         }
  122.                         onReadyStateChangeOriginal && onReadyStateChangeOriginal.apply(xhr, args);
  123.                     };
  124.                     return o(args);
  125.                 };
  126.                 return xhr;
  127.             }
  128.         });
  129.         unsafeWindow.XMLHttpRequest = XHRProxy;
  130.     }
  131.  
  132.     (async () => {
  133.         hookFetch();
  134.     })();
  135.     (async () => {
  136.         hookXhr();
  137.     })();
  138.  
  139.     unsafeWindow['__hookRequest__'] = {
  140.         FetchCallback: {
  141.             add: (pathname, callback) => {
  142.                 let list = FetchMapList.get(pathname) || (FetchMapList.set(pathname, []), FetchMapList.get(pathname));
  143.                 list.push(callback);
  144.                 let index = list.length;
  145.                 return index;
  146.             },
  147.             del: (pathname, index) => {
  148.                 try {
  149.                     let list = FetchMapList.get(pathname);
  150.                     if (list == null) return false;
  151.                     list.splice(index - 1, 1);
  152.                 } catch (e) {
  153.                     new Error(e);
  154.                     return false;
  155.                 }
  156.                 return true;
  157.             }
  158.         },
  159.         XhrCallback: {
  160.             add: (pathname, callback) => {
  161.                 let list = XhrMapList.get(pathname) || (XhrMapList.set(pathname, []), XhrMapList.get(pathname));
  162.                 list.push(callback);
  163.                 let index = list.length;
  164.                 return index;
  165.             },
  166.             del: (pathname, index) => {
  167.                 try {
  168.                     let list = XhrMapList.get(pathname);
  169.                     if (list == null) return false;
  170.                     list.splice(index - 1, 1);
  171.                 } catch (e) {
  172.                     new Error(e);
  173.                     return false;
  174.                 }
  175.                 return true;
  176.             }
  177.         },
  178.         globalVariable: {
  179.             get: (key) => {
  180.                 return globalVariable.get(key);
  181.             },
  182.             getAll: () => {
  183.                 return globalVariable.entries();
  184.             },
  185.             set: (key, value) => {
  186.                 globalVariable.set(key, value);
  187.             },
  188.             getOrDrfault: (key, defaultValue) => {
  189.                 return globalVariable.get(key) || defaultValue;
  190.             }
  191.         }
  192.     };
  193. })();