【根因(实证归因,非猜测)】 分析 userData/logs/main.log 全部 33 次启动会话,定位 3 处异常终止点 (07-25 ×2 / 08-22 ×1,启动标记前无 Database closed)。三处 100% 共享 同一模式:web_search 并行抓取 → 多个 web_fetch 同时进入浏览器回退 → 共享单例 BrowserWindowManager 中后到 open() 销毁前一个正在加载/执行 JS 的窗口。关键统计:56 次浏览器回退中 ERR_ABORTED(并发互毁的直接 证据)仅 3 次,而这 3 次恰好全部对应 3 个崩溃点;无并发销毁的 53 次 回退从未崩溃 —— 触发条件完全收敛。 缺陷链(三层叠加): 1. browserFetch 直接 open/evaluate 共享单例,无跨调用序列化 — 并发 回退互相销毁窗口(ERR_ABORTED / "Object has been destroyed") 2. destroy() 对仍在使用中的 partition fire-and-forget clearStorageData/clearCache,与紧随其后的新窗口创建并发 — 原生存储层竞态(崩溃引爆点) 3. ensureReady 检查与实际 executeJavaScript/loadURL 之间存在竞态窗口; loadURLWithTimeout 的 Race 落败方 rejection 无人处理 【修复(browser-window-manager.ts + web-fetch.ts + browser.ts)】 - 新增 fetchPageText:排队版页面抓取,串行化完整 open→等待→evaluate 序列(与 open 共用单一操作链,destroy 只会在链上发生,跨链互毁彻底 消除);web_fetch 浏览器回退改走此入口 - open() 拆分 openInternal(链内直调);open 与 fetchPageText 共用 单一串行链,排队不分死锁 - destroy() 移除 session 存储清理(终态清理迁移至 close(),await 执行, 不再与窗口创建并发) - safeWebContents() 即时校验替代 racy 的 ensureReady;evaluate/extract/ screenshot/click/type/scroll/waitForSelector 全部加固,消除对已销毁 webContents 的调用 - loadURLWithTimeout 落败方 rejection 兜底(防 unhandledRejection) - cleanupBrowser/cleanup/close 异步化适配(main.ts 退出链路 await) 【崩溃可观测性(此前崩溃无迹可查 — 日志无声截断)】 - process.on(uncaughtException/unhandledRejection) → [FATAL] 落盘 - app.on(render-process-gone/child-process-gone) → [FATAL] 落盘 - WindowManager: 每窗口 render-process-gone 日志 + 自动 reload 自愈 (渲染进程 OOM/崩溃不再白屏卡死,可自动恢复) 【验证】 - lint 0/0;typecheck 双工程 0 错误;test:electron 252/252;build 通过
557 lines
19 KiB
TypeScript
557 lines
19 KiB
TypeScript
/**
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* BrowserWindowManager — 单例浏览器窗口管理器
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*
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* 提供网页加载、截图、JS 执行、内容提取、交互操作能力。
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* 单例懒加载,首次调用时创建,browserClose() 显式销毁。
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*
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* @see docs/Agent网络工具通用设计-v2.md — 第 4 章 browser 浏览器设计
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*/
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import { BrowserWindow, session } from 'electron';
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import log from 'electron-log';
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/** Agent 浏览器专用 session partition — 与主应用 default session 完全隔离 */
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const AGENT_PARTITION = 'persist:metona-agent-browser';
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export interface BrowserOpenOptions {
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url: string;
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waitSelector?: string;
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}
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export interface BrowserOpenResult {
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title: string;
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url: string;
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}
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export interface ScreenshotOptions {
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fullPage?: boolean;
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selector?: string;
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}
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export interface ScreenshotResult {
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data: string; // Base64 PNG
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width: number;
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height: number;
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}
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export interface ExtractResult {
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text: string;
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links: Array<{ text: string; url: string }>;
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}
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export interface ScrollOptions {
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direction?: 'down' | 'up' | 'top' | 'bottom';
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selector?: string;
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}
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export interface WaitOptions {
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selector?: string;
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timeMs?: number;
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}
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export class BrowserWindowManager {
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private win: BrowserWindow | null = null;
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private currentUrl: string | null = null;
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/**
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* v0.3.0 修复 + 崩溃修复: 单一操作串行链 — open 与 fetchPageText 共用。
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*
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* 崩溃实证(main.log 三处异常终止点 100% 相关):web_search 并行抓取触发多个
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* web_fetch 同时进入浏览器回退时,后到的 open() 因 URL 不同销毁前一个正在
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* 加载/执行 JS 的窗口(ERR_ABORTED ×3 = 崩溃 ×3;无并发销毁的 53 次回退从未崩溃)。
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* 串行化完整抓取序列(open→等待→evaluate)后,destroy 只会在链上发生。
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*/
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private openChain: Promise<unknown> = Promise.resolve();
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/** 窗口是否就绪 */
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get ready(): boolean {
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return this.win !== null && !this.win.isDestroyed();
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}
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/**
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* 崩溃修复: 安全获取当前 webContents — 窗口已销毁时抛出可捕获错误。
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*
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* 原实现的 ensureReady 检查与实际 executeJavaScript/loadURL 调用之间存在
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* 竞态窗口(检查通过后窗口被并发 open() 的 destroy() 销毁),对已销毁
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* webContents 调用 API 会同步抛 "Object has been destroyed" 或触发原生层
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* use-after-free。所有窗口方法改为此守卫 + 即时校验。
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*/
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private safeWebContents(): Electron.WebContents {
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if (!this.win || this.win.isDestroyed()) {
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throw new Error('Browser window not ready or destroyed. Call open first.');
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}
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return this.win.webContents;
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}
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// ===== browserOpen =====
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async open(options: BrowserOpenOptions): Promise<BrowserOpenResult> {
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// v0.3.0 修复: 并发互斥锁 — 串行化所有 open 调用,避免竞态导致窗口状态混乱
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const run = async (): Promise<BrowserOpenResult> => this.openInternal(options);
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// 串行化:等待前一个操作完成(open 与 fetchPageText 共用一条链)
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this.openChain = this.openChain.then(run, run);
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return this.openChain as Promise<BrowserOpenResult>;
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}
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/**
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* 内部实际执行 open(不排队 — 供已在链上的调用方直接使用)
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*
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* 崩溃修复: destroy() 仅在链上(openInternal / close)发生 —— 消除
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* "后到 open 销毁前一个正在加载/执行 JS 的窗口" 的跨链竞态。
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*/
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private async openInternal(options: BrowserOpenOptions): Promise<BrowserOpenResult> {
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// 若已有窗口加载了不同 URL → 先关闭重建
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if (this.win && this.currentUrl !== options.url) {
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this.destroy();
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}
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if (!this.win) {
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this.win = new BrowserWindow({
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width: 1280,
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height: 800,
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show: false,
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webPreferences: {
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nodeIntegration: false,
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contextIsolation: true,
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sandbox: true,
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// v0.3.0 修复: 独立 partition,与主应用 default session 完全隔离
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// 防止 Agent 浏览产生的 Cookie/缓存/存储污染主应用
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partition: AGENT_PARTITION,
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// v0.3.0 修复: 恢复 webSecurity,CORS 需求通过 session.webRequest 处理
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webSecurity: true,
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plugins: false,
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webviewTag: false,
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},
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});
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// v0.3.0 修复: 拦截 window.open,Agent 浏览的页面不允许再开新窗口
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this.win.webContents.setWindowOpenHandler(() => ({ action: 'deny' }));
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// v0.3.0 修复: 使用 CORS 放行替代 webSecurity: false
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// 仅对 agent session 放行 CORS,不影响主应用
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const agentSession = session.fromPartition(AGENT_PARTITION);
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agentSession.webRequest.onHeadersReceived((details, callback) => {
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callback({
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responseHeaders: {
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...details.responseHeaders,
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'Access-Control-Allow-Origin': ['*'],
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},
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});
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});
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}
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if (this.win.isDestroyed()) {
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throw new Error('Browser window destroyed before navigation');
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}
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await this.loadURLWithTimeout(this.win, options.url, 30_000);
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this.currentUrl = options.url;
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// 可选等待选择器
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if (options.waitSelector) {
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await this.waitForSelector(options.waitSelector, 10_000);
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}
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const title = await this.evaluate('document.title');
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return { title: String(title ?? ''), url: options.url };
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}
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// ===== browserScreenshot =====
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async screenshot(options: ScreenshotOptions = {}): Promise<ScreenshotResult> {
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// 崩溃修复: safeWebContents 即时校验(消除检查-使用间竞态)
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const wc = this.safeWebContents();
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const win = this.win!;
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// 元素截图
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if (options.selector) {
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const rect = (await wc.executeJavaScript(
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`(() => {
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const el = document.querySelector(${JSON.stringify(options.selector)});
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if (!el) return null;
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const r = el.getBoundingClientRect();
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return { x: r.x, y: r.y, width: r.width, height: r.height };
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})()`,
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true,
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)) as { x: number; y: number; width: number; height: number } | null;
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if (!rect) throw new Error(`Element not found: ${options.selector}`);
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const image = await wc.capturePage({
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x: Math.round(rect.x),
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y: Math.round(rect.y),
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width: Math.round(rect.width),
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height: Math.round(rect.height),
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});
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return { data: image.toPNG().toString('base64'), width: rect.width, height: rect.height };
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}
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// 全页截图
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if (options.fullPage) {
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const dims = (await wc.executeJavaScript(
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`({ width: document.documentElement.scrollWidth, height: document.documentElement.scrollHeight })`,
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true,
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)) as { width: number; height: number };
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// 先滚动到底部触发懒加载
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await wc.executeJavaScript(`window.scrollTo(0, document.body.scrollHeight)`, true);
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await this.sleep(500);
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await wc.executeJavaScript(`window.scrollTo(0, 0)`, true);
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await this.sleep(300);
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const image = await wc.capturePage({
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x: 0,
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y: 0,
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width: dims.width,
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height: dims.height,
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});
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return { data: image.toPNG().toString('base64'), width: dims.width, height: dims.height };
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}
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// 视口截图
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const image = await wc.capturePage();
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const size = win.isDestroyed() ? [0, 0] : win.getContentSize();
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return { data: image.toPNG().toString('base64'), width: size[0], height: size[1] };
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}
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// ===== browserEvaluate =====
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/**
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* 在浏览器页面上下文中执行 JS
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*
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* #46 修复: 增强安全防护
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* - 审计日志:记录所有 executeJavaScript 调用,便于事后追溯恶意操作
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* - 超时控制:防止恶意 JS 无限阻塞主进程(Electron 原生不支持超时,用 Promise.race 模拟)
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*
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* 注意:完全沙箱隔离较难实现(需要 iframe/Web Worker + API 白名单),
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* 当前先实现审计 + 超时作为缓解措施。webPreferences 已配置 contextIsolation: true
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* 和 sandbox: true,Electron API 不会被暴露给页面。
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*/
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async evaluate(js: string): Promise<unknown> {
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// 崩溃修复: safeWebContents 即时校验(ensureReady 与实际调用间的竞态会引发
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// "Object has been destroyed" 同步抛出 / 原生层 use-after-free)
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const wc = this.safeWebContents();
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// #46 修复: 审计日志 — 记录所有 executeJavaScript 调用(截断前 500 字符),便于追溯
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log.info('[BrowserWindowManager] evaluate JS (first 500 chars):', js.substring(0, 500));
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// #46 修复: 超时控制 — 防止恶意 JS 无限阻塞主进程
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const EVAL_TIMEOUT_MS = 10_000;
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let timer: ReturnType<typeof setTimeout> | undefined;
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try {
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const result = await Promise.race([
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wc.executeJavaScript(js, true),
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new Promise<never>((_, reject) => {
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timer = setTimeout(() => {
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// 审查修复 M17: 超时后中止页面 JS 执行。
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// executeJavaScript 返回的 Promise 无法取消,页面脚本仍会继续运行,
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// 调用 webContents.stop() 中止页面正在执行的脚本(win 可能已销毁,try/catch 兜底)。
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try {
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this.win?.webContents.stop();
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} catch {
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/* 窗口可能已销毁,忽略 */
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}
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reject(new Error(`evaluate timed out after ${EVAL_TIMEOUT_MS}ms`));
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}, EVAL_TIMEOUT_MS);
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}),
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]);
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if (typeof result === 'string') return result;
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return result;
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} finally {
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if (timer) clearTimeout(timer);
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}
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}
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// ===== browserExtract =====
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/**
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* 崩溃修复: 排队版页面抓取 — 串行化完整 open→等待→evaluate 序列。
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*
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* web_fetch 浏览器回退的入口。并行回退(web_search 自动抓取并发 3)此前
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* 各自直接 open/evaluate 共享单例,后到者销毁前者的窗口(崩溃根因,
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* 见 openChain 注释)。排队后同一时刻只有一个抓取在使用窗口。
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*
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* @returns 提取的页面正文;失败/内容过短返回 null(调用方走失败路径)
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*/
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async fetchPageText(url: string): Promise<string | null> {
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const run = async (): Promise<string | null> => {
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await this.openInternal({ url });
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await this.sleep(2_500);
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const text = (await this.evaluate(`
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(function() {
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var clone = document.body.cloneNode(true);
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var noise = clone.querySelectorAll('script, style, noscript, nav, header, footer, aside, iframe, svg');
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noise.forEach(function(el) { el.remove(); });
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return clone.innerText || '';
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})();
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`)) as string;
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return text && text.trim() ? text : null;
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};
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this.openChain = this.openChain.then(run, run);
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return this.openChain as Promise<string | null>;
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}
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async extract(selector?: string): Promise<ExtractResult> {
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const wc = this.safeWebContents();
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const result = (await wc.executeJavaScript(
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`(() => {
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const root = ${selector ? `document.querySelector(${JSON.stringify(selector)})` : 'document.body'};
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if (!root) return null;
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const clone = root.cloneNode(true);
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clone.querySelectorAll('script, style, noscript, iframe, svg, nav, header, footer, aside').forEach(el => el.remove());
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const text = (clone.innerText || '').trim();
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const links = [];
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const anchors = (selector ? root : document).querySelectorAll('a[href^="http"]');
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for (const a of anchors) {
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if (links.length >= 50) break;
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const text = (a.textContent || '').trim();
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if (text && a.href) links.push({ text, url: a.href });
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}
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return { text, links };
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})()`,
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true,
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)) as { text: string; links: Array<{ text: string; url: string }> } | null;
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if (!result) throw new Error(selector ? `Element not found: ${selector}` : 'No body content');
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return { text: result.text, links: result.links };
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}
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// ===== browserClick =====
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async click(selector: string, wait = false): Promise<void> {
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if (wait) {
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await this.waitForSelector(selector, 10_000);
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}
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const wc = this.safeWebContents();
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const found = await wc.executeJavaScript(
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`(() => {
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const el = document.querySelector(${JSON.stringify(selector)});
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if (!el) return false;
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el.scrollIntoView({ behavior: 'smooth', block: 'center' });
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return true;
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})()`,
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true,
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);
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if (!found) throw new Error(`Element not found: ${selector}`);
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await this.sleep(300);
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await this.safeWebContents().executeJavaScript(
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`(() => {
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const el = document.querySelector(${JSON.stringify(selector)});
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if (!el) return;
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el.click();
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})()`,
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true,
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);
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await this.sleep(500);
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}
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// ===== browserType =====
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async type(
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selector: string,
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text: string,
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options: { clear?: boolean; submit?: boolean } = {},
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): Promise<void> {
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const wc = this.safeWebContents();
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const found = await wc.executeJavaScript(
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`(() => {
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const el = document.querySelector(${JSON.stringify(selector)});
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if (!el) return false;
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el.scrollIntoView({ behavior: 'smooth', block: 'center' });
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el.focus();
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return true;
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})()`,
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true,
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);
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if (!found) throw new Error(`Element not found: ${selector}`);
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await this.sleep(300);
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// 清空 + 赋值 + 触发事件(兼容 React/Vue)
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await this.safeWebContents().executeJavaScript(
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`(() => {
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const el = document.querySelector(${JSON.stringify(selector)});
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if (!el) return;
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${options.clear ? 'el.value = "";' : ''}
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el.value += ${JSON.stringify(text)};
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el.dispatchEvent(new Event('input', { bubbles: true }));
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el.dispatchEvent(new Event('change', { bubbles: true }));
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})()`,
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true,
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);
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if (options.submit) {
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await this.safeWebContents().executeJavaScript(
|
||
`(() => {
|
||
const el = document.querySelector(${JSON.stringify(selector)});
|
||
if (!el) return;
|
||
if (el.form) el.form.submit();
|
||
else el.dispatchEvent(new KeyboardEvent('keydown', { key: 'Enter', bubbles: true }));
|
||
})()`,
|
||
true,
|
||
);
|
||
await this.sleep(1_000);
|
||
} else {
|
||
await this.sleep(300);
|
||
}
|
||
}
|
||
|
||
// ===== browserScroll =====
|
||
|
||
async scroll(options: ScrollOptions = {}): Promise<void> {
|
||
const wc = this.safeWebContents();
|
||
|
||
if (options.selector) {
|
||
await wc.executeJavaScript(
|
||
`(() => {
|
||
const el = document.querySelector(${JSON.stringify(options.selector)});
|
||
if (el) el.scrollIntoView({ behavior: 'smooth', block: 'center' });
|
||
})()`,
|
||
true,
|
||
);
|
||
return;
|
||
}
|
||
|
||
const direction = options.direction ?? 'down';
|
||
const js =
|
||
{
|
||
down: 'window.scrollBy(0, 500)',
|
||
up: 'window.scrollBy(0, -500)',
|
||
top: 'window.scrollTo(0, 0)',
|
||
bottom: 'window.scrollTo(0, document.body.scrollHeight)',
|
||
}[direction] ?? 'window.scrollBy(0, 500)';
|
||
|
||
await wc.executeJavaScript(js, true);
|
||
await this.sleep(300);
|
||
}
|
||
|
||
// ===== browserWait =====
|
||
|
||
async wait(options: WaitOptions = {}): Promise<void> {
|
||
if (options.selector) {
|
||
await this.waitForSelector(options.selector, options.timeMs ?? 10_000);
|
||
} else {
|
||
await this.sleep(options.timeMs ?? 1_000);
|
||
}
|
||
}
|
||
|
||
// ===== browserClose =====
|
||
|
||
/**
|
||
* 关闭并清理(应用退出 / browser close 动作时调用)
|
||
*
|
||
* 崩溃修复: session 存储清理从 destroy() 迁移至此 —— destroy() 此前对
|
||
* 仍在使用中的 partition(紧随其后就会新建窗口)fire-and-forget 调用
|
||
* clearStorageData/clearCache,与新窗口初始化并发执行,构成原生存储层
|
||
* 竞态(崩溃引爆点)。close() 是终态路径,await 清理与窗口销毁不再交叠。
|
||
*/
|
||
async close(): Promise<void> {
|
||
this.destroy();
|
||
try {
|
||
const ses = session.fromPartition(AGENT_PARTITION);
|
||
await ses.clearStorageData({
|
||
storages: [
|
||
'cookies',
|
||
'localstorage',
|
||
'indexdb',
|
||
'shadercache',
|
||
'serviceworkers',
|
||
'cachestorage',
|
||
],
|
||
});
|
||
await ses.clearCache();
|
||
} catch {
|
||
/* ignore */
|
||
}
|
||
}
|
||
|
||
// ===== 内部辅助 =====
|
||
|
||
/** 带超时的 loadURL(Electron 原生不支持 timeout 选项) */
|
||
private async loadURLWithTimeout(
|
||
win: BrowserWindow,
|
||
url: string,
|
||
timeoutMs: number,
|
||
): Promise<void> {
|
||
let timer: NodeJS.Timeout | null = null;
|
||
const timeoutPromise = new Promise<never>((_, reject) => {
|
||
timer = setTimeout(
|
||
() => reject(new Error(`Page load timeout after ${timeoutMs}ms: ${url}`)),
|
||
timeoutMs,
|
||
);
|
||
});
|
||
|
||
// 崩溃修复: Race 落败方的 rejection 必须兜底 —— 超时/窗口销毁先触发时,
|
||
// loadURL 随后以 ERR_ABORTED 拒绝,无人处理会成为 unhandledRejection
|
||
const loadPromise = win.loadURL(url);
|
||
loadPromise.catch(() => {
|
||
/* 落败方 rejection 已由 race 胜者处理,此处仅防漏 */
|
||
});
|
||
|
||
try {
|
||
await Promise.race([loadPromise, timeoutPromise]);
|
||
} catch (e) {
|
||
// v0.3.0 修复: 超时后停止页面加载,避免后台继续消耗网络和 CPU 资源
|
||
if (!win.isDestroyed()) {
|
||
try {
|
||
win.webContents.stop();
|
||
} catch {
|
||
/* ignore */
|
||
}
|
||
}
|
||
throw e;
|
||
} finally {
|
||
if (timer) clearTimeout(timer);
|
||
}
|
||
}
|
||
|
||
private async waitForSelector(selector: string, timeoutMs: number): Promise<void> {
|
||
const startTime = Date.now();
|
||
while (Date.now() - startTime < timeoutMs) {
|
||
// 崩溃修复: 循环内即时校验(窗口可能在等待期间被链上操作销毁)
|
||
const found = await this.safeWebContents().executeJavaScript(
|
||
`!!document.querySelector(${JSON.stringify(selector)})`,
|
||
true,
|
||
);
|
||
if (found) return;
|
||
await this.sleep(300);
|
||
}
|
||
throw new Error(`Timeout waiting for selector: ${selector}`);
|
||
}
|
||
|
||
private destroy(): void {
|
||
if (this.win && !this.win.isDestroyed()) {
|
||
try {
|
||
this.win.webContents.stop();
|
||
} catch {
|
||
/* ignore */
|
||
}
|
||
try {
|
||
this.win.destroy();
|
||
} catch {
|
||
/* ignore */
|
||
}
|
||
}
|
||
this.win = null;
|
||
this.currentUrl = null;
|
||
// 崩溃修复: 移除 session 清理 —— 原实现 fire-and-forget 清理仍在使用的
|
||
// partition,与紧随其后的新窗口创建并发,构成原生存储层竞态。
|
||
// 存储清理迁移至 close()(终态路径,见方法注释)。
|
||
}
|
||
|
||
private sleep(ms: number): Promise<void> {
|
||
return new Promise((resolve) => setTimeout(resolve, ms));
|
||
}
|
||
|
||
/** 应用退出时清理(close 现为异步 — 含 session 存储终态清理) */
|
||
static async cleanup(manager: BrowserWindowManager | null): Promise<void> {
|
||
if (manager) await manager.close();
|
||
log.info('[BrowserWindowManager] Cleaned up');
|
||
}
|
||
}
|