hookFetch

only hookFetch

当前为 2023-05-06 提交的版本,查看 最新版本

此脚本不应直接安装。它是供其他脚本使用的外部库,要使用该库请加入元指令 // @require https://update.gf.qytechs.cn/scripts/465483/1186362/hookFetch.js

  1. (() => {
  2. var contextWindow = window.unsafeWindow || document.defaultView || window;
  3. if (contextWindow['__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 = contextWindow.fetch;
  29. globalVariable.set('Fetch', originalFetch);
  30. contextWindow.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 originalGetReader = response.body.getReader;
  53. response.body.getReader = function () {
  54. let originalReader = originalGetReader.apply(this, arguments);
  55. let originalRead = originalReader.read;
  56. originalReader.read = function () {
  57. return originalRead.apply(this, arguments).then(function (result) {
  58. let tempObject = deliveryTask(callback, { result, args }, 'doing');
  59. if (tempObject && tempObject.result) {
  60. result = tempObject.result;
  61. }
  62. return result;
  63. });
  64. };
  65. return originalReader;
  66. };
  67. let text = response.text,
  68. json = response.json;
  69. response.text = () => {
  70. return text.apply(response).then((text) => {
  71. let _object = deliveryTask(callback, { text, args }, 'done');
  72. if (_object && _object.text) {
  73. text = _object.text;
  74. }
  75. return text;
  76. });
  77. };
  78. response.json = () => {
  79. return json.apply(response).then((json) => {
  80. let text = JSON.stringify(json);
  81. let _object = deliveryTask(callback, { text, args }, 'done');
  82. if (_object && _object.text) {
  83. text = _object.text;
  84. return JSON.parse(text);
  85. }
  86. return json;
  87. });
  88. };
  89. });
  90. })();
  91. if (apply == null) {
  92. apply = originalFetch.apply(this, args);
  93. }
  94. return apply;
  95. };
  96. }
  97.  
  98. // globalVariable.set('XMLHttpRequest', contextWindow.XMLHttpRequest);
  99.  
  100. function hookXhr() {
  101. // 保存原生 XMLHttpRequest 对象的 open 方法和 send 方法
  102. const originalOpen = contextWindow.XMLHttpRequest.prototype.open;
  103. const originalSend = contextWindow.XMLHttpRequest.prototype.send;
  104.  
  105. // 修改 XMLHttpRequest 对象的 open 方法
  106. contextWindow.XMLHttpRequest.prototype.open = function (method, url) {
  107. this._url = url;
  108. this._responseType = null;
  109. originalOpen.apply(this, arguments);
  110. };
  111.  
  112. // 修改 XMLHttpRequest 对象的 send 方法
  113. contextWindow.XMLHttpRequest.prototype.send = function () {
  114. const self = this;
  115.  
  116. // 保存原生 XMLHttpRequest 对象的 onreadystatechange 方法
  117. const originalReadyStateChange = this.onreadystatechange;
  118.  
  119. // 修改 XMLHttpRequest 对象的 onreadystatechange 方法
  120. this.onreadystatechange = function () {
  121. if (self.readyState === 4 && self.status === 200) {
  122. // 检查 responseType 的值,如果不是 '' 或 'text',则将其设置回 'text'
  123. if (self.responseType !== '' && self.responseType !== 'text') {
  124. self.responseType = 'text';
  125. }
  126.  
  127. // 修改 responseText
  128. const modifiedResponseText = 'Modified ' + self.responseText;
  129. self.responseText = modifiedResponseText;
  130. }
  131.  
  132. // 调用原生 XMLHttpRequest 对象的 onreadystatechange 方法
  133. if (typeof originalReadyStateChange === 'function') {
  134. originalReadyStateChange.apply(self, arguments);
  135. }
  136. };
  137.  
  138. // 设置 responseType 属性
  139. if (this._responseType) {
  140. this.responseType = this._responseType;
  141. }
  142.  
  143. // 调用原生 XMLHttpRequest 对象的 send 方法
  144. originalSend.apply(this, arguments);
  145. };
  146.  
  147. // 新增设置 responseType 的方法
  148. contextWindow.XMLHttpRequest.prototype.setResponseType = function (responseType) {
  149. this._responseType = responseType;
  150. };
  151. }
  152.  
  153. hookFetch();
  154. hookXhr();
  155.  
  156. contextWindow['__hookRequest__'] = {
  157. FetchCallback: {
  158. add: (pathname, callback) => {
  159. let list = FetchMapList.get(pathname) || (FetchMapList.set(pathname, []), FetchMapList.get(pathname));
  160. list.push(callback);
  161. let index = list.length;
  162. return index;
  163. },
  164. del: (pathname, index) => {
  165. try {
  166. let list = FetchMapList.get(pathname);
  167. if (list == null) return false;
  168. list.splice(index - 1, 1);
  169. } catch (e) {
  170. new Error(e);
  171. return false;
  172. }
  173. return true;
  174. }
  175. },
  176. XhrCallback: {
  177. add: (pathname, callback) => {
  178. let list = XhrMapList.get(pathname) || (XhrMapList.set(pathname, []), XhrMapList.get(pathname));
  179. list.push(callback);
  180. let index = list.length;
  181. return index;
  182. },
  183. del: (pathname, index) => {
  184. try {
  185. let list = XhrMapList.get(pathname);
  186. if (list == null) return false;
  187. list.splice(index - 1, 1);
  188. } catch (e) {
  189. new Error(e);
  190. return false;
  191. }
  192. return true;
  193. }
  194. },
  195. globalVariable: {
  196. get: (key) => {
  197. return globalVariable.get(key);
  198. },
  199. getAll: () => {
  200. return globalVariable.entries();
  201. },
  202. set: (key, value) => {
  203. globalVariable.set(key, value);
  204. },
  205. getOrDrfault: (key, defaultValue) => {
  206. return globalVariable.get(key) || defaultValue;
  207. }
  208. }
  209. };
  210. })();

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