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| import { JSDOM } from "npm:jsdom"; | |
| import { userAgent } from "./utils.ts"; | |
| import crypto from "node:crypto"; | |
| // 更详细的类型定义 | |
| interface MockMeta { | |
| readonly origin: string; | |
| readonly stack: string; | |
| readonly duration: number; | |
| } | |
| interface HashResults { | |
| server_hashes: string[]; | |
| client_hashes: string[]; | |
| signals: Record<string, unknown>; | |
| meta: Record<string, unknown>; | |
| } | |
| interface JSExecutionResult { | |
| server_hashes?: string[]; | |
| client_hashes?: string[]; | |
| signals?: Record<string, unknown>; | |
| meta?: Record<string, unknown>; | |
| } | |
| const mockMeta: MockMeta = { | |
| origin: "https://duckduckgo.com", | |
| stack: "", | |
| duration: Math.floor(Math.random() * 100) + 1, | |
| } as const; | |
| class VqdHashGenerator { | |
| private static extractIIFEJSDOM(jsCode: string): HashResults { | |
| const results: HashResults = { | |
| server_hashes: [], | |
| client_hashes: [], | |
| signals: {}, | |
| meta: {}, | |
| }; | |
| let dom: JSDOM | null = null; | |
| try { | |
| dom = new JSDOM( | |
| `<!DOCTYPE html><html><head></head><body></body></html>`, | |
| { | |
| url: "https://duckduckgo.com", | |
| referrer: "https://duckduckgo.com", | |
| pretendToBeVisual: true, | |
| resources: "usable", | |
| } | |
| ); | |
| const { window } = dom; | |
| // 设置全局变量 | |
| globalThis.window = window; | |
| globalThis.document = window.document; | |
| // 创建自定义 navigator 对象 | |
| const customNavigator = { | |
| userAgent: userAgent, | |
| platform: "Win32", | |
| language: "en-US", | |
| languages: ["en-US", "en"], | |
| cookieEnabled: true, | |
| onLine: true, | |
| hardwareConcurrency: 4, | |
| maxTouchPoints: 0, | |
| vendor: "Google Inc.", | |
| vendorSub: "", | |
| productSub: "20030107", | |
| appName: "Netscape", | |
| appVersion: userAgent, | |
| product: "Gecko", | |
| }; | |
| // 重新定义 window.navigator | |
| Object.defineProperty(window, "navigator", { | |
| value: customNavigator, | |
| writable: true, | |
| configurable: true, | |
| enumerable: true, | |
| }); | |
| // 设置 globalThis.navigator | |
| Object.defineProperty(globalThis, "navigator", { | |
| value: customNavigator, | |
| writable: true, | |
| configurable: true, | |
| enumerable: true, | |
| }); | |
| // 删除 webdriver 属性 | |
| delete (window.navigator as any).webdriver; | |
| // 执行 JavaScript 代码 | |
| const result = window.eval(jsCode) as JSExecutionResult; | |
| if (result && typeof result === "object") { | |
| results.server_hashes = result.server_hashes || []; | |
| results.client_hashes = result.client_hashes || []; | |
| results.signals = result.signals || {}; | |
| results.meta = result.meta || {}; | |
| } | |
| } catch (error) { | |
| console.error("JSDOM execution failed:", error); | |
| throw new Error( | |
| `JSDOM执行失败: ${ | |
| error instanceof Error ? error.message : String(error) | |
| }` | |
| ); | |
| } finally { | |
| // 清理资源 | |
| if (dom) { | |
| dom.window.close(); | |
| } | |
| delete globalThis.window; | |
| delete globalThis.document; | |
| delete globalThis.navigator; | |
| } | |
| return results; | |
| } | |
| private static hashClientValues(mockClientHashes: string[]): string[] { | |
| return mockClientHashes.map((value: string): string => { | |
| const hash = crypto.createHash("sha256"); | |
| hash.update(value, "utf8"); | |
| return hash.digest("base64"); | |
| }); | |
| } | |
| static generate(vqdHashRequest: string): string { | |
| if (!vqdHashRequest || typeof vqdHashRequest !== "string") { | |
| throw new Error("VQD Hash 请求参数无效"); | |
| } | |
| try { | |
| // 解码 base64 | |
| const jsCode = atob(vqdHashRequest); | |
| // 提取和处理 hash | |
| const hash = this.extractIIFEJSDOM(jsCode); | |
| // 处理客户端 hash | |
| hash.client_hashes = this.hashClientValues(hash.client_hashes); | |
| // 合并 meta 数据 | |
| hash.meta = { | |
| ...hash.meta, | |
| ...mockMeta, | |
| }; | |
| // 返回编码后的结果 | |
| return btoa(JSON.stringify(hash)); | |
| } catch (error) { | |
| console.error("generateVqdHash 执行失败:", error); | |
| throw new Error( | |
| `VQD Hash 生成失败: ${ | |
| error instanceof Error ? error.message : String(error) | |
| }` | |
| ); | |
| } | |
| } | |
| } | |
| // 导出函数版本以保持向后兼容 | |
| export function generateVqdHash(vqdHashRequest: string): string { | |
| return VqdHashGenerator.generate(vqdHashRequest); | |
| } | |
| // 导出类版本 | |
| export { VqdHashGenerator }; | |
| export type { HashResults, MockMeta, JSExecutionResult }; | |