mirror of
https://github.com/garrytan/gstack.git
synced 2026-05-11 15:07:26 +08:00
73f5d0b77d
validateOutputPath, validateReadPath, and SAFE_DIRECTORIES were duplicated across write-commands.ts, meta-commands.ts, and read-commands.ts. Extract to a single shared module with re-exports for backward compatibility. Also adds validateTempPath() for the upcoming GET /file endpoint (TEMP_DIR only, not cwd, to prevent remote agents from reading project files). Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>
630 lines
25 KiB
TypeScript
630 lines
25 KiB
TypeScript
/**
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* Meta commands — tabs, server control, screenshots, chain, diff, snapshot
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*/
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import type { BrowserManager } from './browser-manager';
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import { handleSnapshot } from './snapshot';
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import { getCleanText } from './read-commands';
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import { READ_COMMANDS, WRITE_COMMANDS, META_COMMANDS, PAGE_CONTENT_COMMANDS, wrapUntrustedContent } from './commands';
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import { validateNavigationUrl } from './url-validation';
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import { checkScope, type TokenInfo } from './token-registry';
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import { validateOutputPath, escapeRegExp } from './path-security';
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// Re-export for backward compatibility (tests import from meta-commands)
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export { validateOutputPath, escapeRegExp } from './path-security';
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import * as Diff from 'diff';
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import * as fs from 'fs';
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import * as path from 'path';
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import { TEMP_DIR } from './platform';
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import { resolveConfig } from './config';
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import type { Frame } from 'playwright';
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/** Tokenize a pipe segment respecting double-quoted strings. */
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function tokenizePipeSegment(segment: string): string[] {
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const tokens: string[] = [];
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let current = '';
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let inQuote = false;
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for (let i = 0; i < segment.length; i++) {
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const ch = segment[i];
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if (ch === '"') {
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inQuote = !inQuote;
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} else if (ch === ' ' && !inQuote) {
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if (current) { tokens.push(current); current = ''; }
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} else {
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current += ch;
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}
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}
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if (current) tokens.push(current);
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return tokens;
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}
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/** Options passed from handleCommandInternal for chain routing */
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export interface MetaCommandOpts {
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chainDepth?: number;
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/** Callback to route subcommands through the full security pipeline (handleCommandInternal) */
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executeCommand?: (body: { command: string; args?: string[]; tabId?: number }, tokenInfo?: TokenInfo | null) => Promise<{ status: number; result: string; json?: boolean }>;
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}
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export async function handleMetaCommand(
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command: string,
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args: string[],
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bm: BrowserManager,
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shutdown: () => Promise<void> | void,
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tokenInfo?: TokenInfo | null,
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opts?: MetaCommandOpts,
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): Promise<string> {
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switch (command) {
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// ─── Tabs ──────────────────────────────────────────
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case 'tabs': {
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const tabs = await bm.getTabListWithTitles();
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return tabs.map(t =>
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`${t.active ? '→ ' : ' '}[${t.id}] ${t.title || '(untitled)'} — ${t.url}`
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).join('\n');
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}
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case 'tab': {
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const id = parseInt(args[0], 10);
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if (isNaN(id)) throw new Error('Usage: browse tab <id>');
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bm.switchTab(id);
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return `Switched to tab ${id}`;
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}
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case 'newtab': {
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const url = args[0];
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const id = await bm.newTab(url);
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return `Opened tab ${id}${url ? ` → ${url}` : ''}`;
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}
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case 'closetab': {
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const id = args[0] ? parseInt(args[0], 10) : undefined;
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await bm.closeTab(id);
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return `Closed tab${id ? ` ${id}` : ''}`;
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}
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// ─── Server Control ────────────────────────────────
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case 'status': {
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const page = bm.getPage();
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const tabs = bm.getTabCount();
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const mode = bm.getConnectionMode();
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return [
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`Status: healthy`,
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`Mode: ${mode}`,
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`URL: ${page.url()}`,
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`Tabs: ${tabs}`,
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`PID: ${process.pid}`,
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].join('\n');
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}
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case 'url': {
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return bm.getCurrentUrl();
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}
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case 'stop': {
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await shutdown();
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return 'Server stopped';
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}
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case 'restart': {
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// Signal that we want a restart — the CLI will detect exit and restart
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console.log('[browse] Restart requested. Exiting for CLI to restart.');
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await shutdown();
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return 'Restarting...';
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}
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// ─── Visual ────────────────────────────────────────
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case 'screenshot': {
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// Parse priority: flags (--viewport, --clip) → selector (@ref, CSS) → output path
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const page = bm.getPage();
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let outputPath = `${TEMP_DIR}/browse-screenshot.png`;
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let clipRect: { x: number; y: number; width: number; height: number } | undefined;
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let targetSelector: string | undefined;
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let viewportOnly = false;
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const remaining: string[] = [];
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for (let i = 0; i < args.length; i++) {
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if (args[i] === '--viewport') {
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viewportOnly = true;
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} else if (args[i] === '--clip') {
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const coords = args[++i];
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if (!coords) throw new Error('Usage: screenshot --clip x,y,w,h [path]');
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const parts = coords.split(',').map(Number);
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if (parts.length !== 4 || parts.some(isNaN))
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throw new Error('Usage: screenshot --clip x,y,width,height — all must be numbers');
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clipRect = { x: parts[0], y: parts[1], width: parts[2], height: parts[3] };
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} else if (args[i].startsWith('--')) {
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throw new Error(`Unknown screenshot flag: ${args[i]}`);
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} else {
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remaining.push(args[i]);
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}
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}
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// Separate target (selector/@ref) from output path
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for (const arg of remaining) {
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// File paths containing / and ending with an image/pdf extension are never CSS selectors
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const isFilePath = arg.includes('/') && /\.(png|jpe?g|webp|pdf)$/i.test(arg);
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if (isFilePath) {
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outputPath = arg;
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} else if (arg.startsWith('@e') || arg.startsWith('@c') || arg.startsWith('.') || arg.startsWith('#') || arg.includes('[')) {
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targetSelector = arg;
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} else {
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outputPath = arg;
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}
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}
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validateOutputPath(outputPath);
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if (clipRect && targetSelector) {
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throw new Error('Cannot use --clip with a selector/ref — choose one');
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}
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if (viewportOnly && clipRect) {
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throw new Error('Cannot use --viewport with --clip — choose one');
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}
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if (targetSelector) {
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const resolved = await bm.resolveRef(targetSelector);
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const locator = 'locator' in resolved ? resolved.locator : page.locator(resolved.selector);
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await locator.screenshot({ path: outputPath, timeout: 5000 });
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return `Screenshot saved (element): ${outputPath}`;
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}
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if (clipRect) {
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await page.screenshot({ path: outputPath, clip: clipRect });
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return `Screenshot saved (clip ${clipRect.x},${clipRect.y},${clipRect.width},${clipRect.height}): ${outputPath}`;
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}
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await page.screenshot({ path: outputPath, fullPage: !viewportOnly });
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return `Screenshot saved${viewportOnly ? ' (viewport)' : ''}: ${outputPath}`;
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}
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case 'pdf': {
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const page = bm.getPage();
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const pdfPath = args[0] || `${TEMP_DIR}/browse-page.pdf`;
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validateOutputPath(pdfPath);
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await page.pdf({ path: pdfPath, format: 'A4' });
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return `PDF saved: ${pdfPath}`;
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}
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case 'responsive': {
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const page = bm.getPage();
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const prefix = args[0] || `${TEMP_DIR}/browse-responsive`;
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validateOutputPath(prefix);
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const viewports = [
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{ name: 'mobile', width: 375, height: 812 },
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{ name: 'tablet', width: 768, height: 1024 },
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{ name: 'desktop', width: 1280, height: 720 },
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];
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const originalViewport = page.viewportSize();
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const results: string[] = [];
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for (const vp of viewports) {
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await page.setViewportSize({ width: vp.width, height: vp.height });
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const screenshotPath = `${prefix}-${vp.name}.png`;
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validateOutputPath(screenshotPath);
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await page.screenshot({ path: screenshotPath, fullPage: true });
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results.push(`${vp.name} (${vp.width}x${vp.height}): ${screenshotPath}`);
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}
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// Restore original viewport
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if (originalViewport) {
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await page.setViewportSize(originalViewport);
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}
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return results.join('\n');
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}
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// ─── Chain ─────────────────────────────────────────
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case 'chain': {
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// Read JSON array from args[0] (if provided) or expect it was passed as body
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const jsonStr = args[0];
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if (!jsonStr) throw new Error(
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'Usage: echo \'[["goto","url"],["text"]]\' | browse chain\n' +
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' or: browse chain \'goto url | click @e5 | snapshot -ic\''
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);
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let commands: string[][];
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try {
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commands = JSON.parse(jsonStr);
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if (!Array.isArray(commands)) throw new Error('not array');
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} catch {
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// Fallback: pipe-delimited format "goto url | click @e5 | snapshot -ic"
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commands = jsonStr.split(' | ')
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.filter(seg => seg.trim().length > 0)
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.map(seg => tokenizePipeSegment(seg.trim()));
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}
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// Pre-validate ALL subcommands against the token's scope before executing any.
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// This prevents partial execution where some subcommands succeed before a
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// scope violation is hit, leaving the browser in an inconsistent state.
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if (tokenInfo && tokenInfo.clientId !== 'root') {
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for (const cmd of commands) {
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const [name] = cmd;
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if (!checkScope(tokenInfo, name)) {
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throw new Error(
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`Chain rejected: subcommand "${name}" not allowed by your token scope (${tokenInfo.scopes.join(', ')}). ` +
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`All subcommands must be within scope.`
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);
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}
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}
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}
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// Route each subcommand through handleCommandInternal for full security:
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// scope, domain, tab ownership, content wrapping — all enforced per subcommand.
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// Chain-specific options: skip rate check (chain = 1 request), skip activity
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// events (chain emits 1 event), increment chain depth (recursion guard).
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const executeCmd = opts?.executeCommand;
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const results: string[] = [];
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let lastWasWrite = false;
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if (executeCmd) {
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// Full security pipeline via handleCommandInternal
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for (const cmd of commands) {
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const [name, ...cmdArgs] = cmd;
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const cr = await executeCmd(
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{ command: name, args: cmdArgs },
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tokenInfo,
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);
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if (cr.status === 200) {
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results.push(`[${name}] ${cr.result}`);
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} else {
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// Parse error from JSON result
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let errMsg = cr.result;
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try { errMsg = JSON.parse(cr.result).error || cr.result; } catch {}
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results.push(`[${name}] ERROR: ${errMsg}`);
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}
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lastWasWrite = WRITE_COMMANDS.has(name);
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}
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} else {
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// Fallback: direct dispatch (CLI mode, no server context)
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const { handleReadCommand } = await import('./read-commands');
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const { handleWriteCommand } = await import('./write-commands');
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for (const cmd of commands) {
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const [name, ...cmdArgs] = cmd;
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try {
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let result: string;
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if (WRITE_COMMANDS.has(name)) {
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if (bm.isWatching()) {
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result = 'BLOCKED: write commands disabled in watch mode';
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} else {
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result = await handleWriteCommand(name, cmdArgs, bm);
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}
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lastWasWrite = true;
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} else if (READ_COMMANDS.has(name)) {
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result = await handleReadCommand(name, cmdArgs, bm);
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if (PAGE_CONTENT_COMMANDS.has(name)) {
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result = wrapUntrustedContent(result, bm.getCurrentUrl());
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}
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lastWasWrite = false;
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} else if (META_COMMANDS.has(name)) {
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result = await handleMetaCommand(name, cmdArgs, bm, shutdown, tokenInfo, opts);
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lastWasWrite = false;
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} else {
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throw new Error(`Unknown command: ${name}`);
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}
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results.push(`[${name}] ${result}`);
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} catch (err: any) {
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results.push(`[${name}] ERROR: ${err.message}`);
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}
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}
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}
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// Wait for network to settle after write commands before returning
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if (lastWasWrite) {
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await bm.getPage().waitForLoadState('networkidle', { timeout: 2000 }).catch(() => {});
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}
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return results.join('\n\n');
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}
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// ─── Diff ──────────────────────────────────────────
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case 'diff': {
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const [url1, url2] = args;
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if (!url1 || !url2) throw new Error('Usage: browse diff <url1> <url2>');
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const page = bm.getPage();
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await validateNavigationUrl(url1);
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await page.goto(url1, { waitUntil: 'domcontentloaded', timeout: 15000 });
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const text1 = await getCleanText(page);
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await validateNavigationUrl(url2);
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await page.goto(url2, { waitUntil: 'domcontentloaded', timeout: 15000 });
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const text2 = await getCleanText(page);
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const changes = Diff.diffLines(text1, text2);
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const output: string[] = [`--- ${url1}`, `+++ ${url2}`, ''];
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for (const part of changes) {
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const prefix = part.added ? '+' : part.removed ? '-' : ' ';
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const lines = part.value.split('\n').filter(l => l.length > 0);
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for (const line of lines) {
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output.push(`${prefix} ${line}`);
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}
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}
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return wrapUntrustedContent(output.join('\n'), `diff: ${url1} vs ${url2}`);
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}
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// ─── Snapshot ─────────────────────────────────────
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case 'snapshot': {
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const isScoped = tokenInfo && tokenInfo.clientId !== 'root';
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const snapshotResult = await handleSnapshot(args, bm, {
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splitForScoped: !!isScoped,
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});
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// Scoped tokens get split format (refs outside envelope); root gets basic wrapping
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if (isScoped) {
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return snapshotResult; // already has envelope from split format
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}
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return wrapUntrustedContent(snapshotResult, bm.getCurrentUrl());
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}
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// ─── Handoff ────────────────────────────────────
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case 'handoff': {
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const message = args.join(' ') || 'User takeover requested';
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return await bm.handoff(message);
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}
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case 'resume': {
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bm.resume();
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// Re-snapshot to capture current page state after human interaction
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const isScoped2 = tokenInfo && tokenInfo.clientId !== 'root';
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const snapshot = await handleSnapshot(['-i'], bm, { splitForScoped: !!isScoped2 });
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if (isScoped2) {
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return `RESUMED\n${snapshot}`;
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}
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return `RESUMED\n${wrapUntrustedContent(snapshot, bm.getCurrentUrl())}`;
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}
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// ─── Headed Mode ──────────────────────────────────────
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case 'connect': {
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// connect is handled as a pre-server command in cli.ts
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// If we get here, server is already running — tell the user
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if (bm.getConnectionMode() === 'headed') {
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return 'Already in headed mode with extension.';
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}
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return 'The connect command must be run from the CLI (not sent to a running server). Run: $B connect';
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}
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case 'disconnect': {
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if (bm.getConnectionMode() !== 'headed') {
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return 'Not in headed mode — nothing to disconnect.';
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}
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// Signal that we want a restart in headless mode
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console.log('[browse] Disconnecting headed browser. Restarting in headless mode.');
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await shutdown();
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return 'Disconnected. Server will restart in headless mode on next command.';
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}
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case 'focus': {
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if (bm.getConnectionMode() !== 'headed') {
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return 'focus requires headed mode. Run `$B connect` first.';
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}
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try {
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const { execSync } = await import('child_process');
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// Try common Chromium-based browser app names to bring to foreground
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const appNames = ['Comet', 'Google Chrome', 'Arc', 'Brave Browser', 'Microsoft Edge'];
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let activated = false;
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for (const appName of appNames) {
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try {
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execSync(`osascript -e 'tell application "${appName}" to activate'`, { stdio: 'pipe', timeout: 3000 });
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activated = true;
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break;
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} catch {
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// Try next browser
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}
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}
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if (!activated) {
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return 'Could not bring browser to foreground. macOS only.';
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}
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// If a ref was passed, scroll it into view
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if (args.length > 0 && args[0].startsWith('@')) {
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try {
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const resolved = await bm.resolveRef(args[0]);
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if ('locator' in resolved) {
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await resolved.locator.scrollIntoViewIfNeeded({ timeout: 5000 });
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return `Browser activated. Scrolled ${args[0]} into view.`;
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}
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} catch {
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// Ref not found — still activated the browser
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}
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}
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return 'Browser window activated.';
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} catch (err: any) {
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return `focus failed: ${err.message}. macOS only.`;
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}
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}
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// ─── Watch ──────────────────────────────────────────
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case 'watch': {
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if (args[0] === 'stop') {
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if (!bm.isWatching()) return 'Not currently watching.';
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const result = bm.stopWatch();
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const durationSec = Math.round(result.duration / 1000);
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const lastSnapshot = result.snapshots.length > 0
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? wrapUntrustedContent(result.snapshots[result.snapshots.length - 1], bm.getCurrentUrl())
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: '(none)';
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return [
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`WATCH STOPPED (${durationSec}s, ${result.snapshots.length} snapshots)`,
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'',
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'Last snapshot:',
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lastSnapshot,
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].join('\n');
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}
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if (bm.isWatching()) return 'Already watching. Run `$B watch stop` to stop.';
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if (bm.getConnectionMode() !== 'headed') {
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return 'watch requires headed mode. Run `$B connect` first.';
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}
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bm.startWatch();
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return 'WATCHING — observing user browsing. Periodic snapshots every 5s.\nRun `$B watch stop` to stop and get summary.';
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}
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// ─── Inbox ──────────────────────────────────────────
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case 'inbox': {
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const { execSync } = await import('child_process');
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let gitRoot: string;
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try {
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gitRoot = execSync('git rev-parse --show-toplevel', { encoding: 'utf-8', stdio: ['pipe', 'pipe', 'pipe'] }).trim();
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} catch {
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return 'Not in a git repository — cannot locate inbox.';
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}
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|
||
const inboxDir = path.join(gitRoot, '.context', 'sidebar-inbox');
|
||
if (!fs.existsSync(inboxDir)) return 'Inbox empty.';
|
||
|
||
const files = fs.readdirSync(inboxDir)
|
||
.filter(f => f.endsWith('.json') && !f.startsWith('.'))
|
||
.sort()
|
||
.reverse(); // newest first
|
||
|
||
if (files.length === 0) return 'Inbox empty.';
|
||
|
||
const messages: { timestamp: string; url: string; userMessage: string }[] = [];
|
||
for (const file of files) {
|
||
try {
|
||
const data = JSON.parse(fs.readFileSync(path.join(inboxDir, file), 'utf-8'));
|
||
messages.push({
|
||
timestamp: data.timestamp || '',
|
||
url: data.page?.url || 'unknown',
|
||
userMessage: data.userMessage || '',
|
||
});
|
||
} catch {
|
||
// Skip malformed files
|
||
}
|
||
}
|
||
|
||
if (messages.length === 0) return 'Inbox empty.';
|
||
|
||
const lines: string[] = [];
|
||
lines.push(`SIDEBAR INBOX (${messages.length} message${messages.length === 1 ? '' : 's'})`);
|
||
lines.push('────────────────────────────────');
|
||
|
||
for (const msg of messages) {
|
||
const ts = msg.timestamp ? `[${msg.timestamp}]` : '[unknown]';
|
||
lines.push(`${ts} ${wrapUntrustedContent(msg.url, 'inbox-url')}`);
|
||
lines.push(` "${wrapUntrustedContent(msg.userMessage, 'inbox-message')}"`);
|
||
lines.push('');
|
||
}
|
||
|
||
lines.push('────────────────────────────────');
|
||
|
||
// Handle --clear flag
|
||
if (args.includes('--clear')) {
|
||
for (const file of files) {
|
||
try { fs.unlinkSync(path.join(inboxDir, file)); } catch {}
|
||
}
|
||
lines.push(`Cleared ${files.length} message${files.length === 1 ? '' : 's'}.`);
|
||
}
|
||
|
||
return lines.join('\n');
|
||
}
|
||
|
||
// ─── State ────────────────────────────────────────
|
||
case 'state': {
|
||
const [action, name] = args;
|
||
if (!action || !name) throw new Error('Usage: state save|load <name>');
|
||
|
||
// Sanitize name: alphanumeric + hyphens + underscores only
|
||
if (!/^[a-zA-Z0-9_-]+$/.test(name)) {
|
||
throw new Error('State name must be alphanumeric (a-z, 0-9, _, -)');
|
||
}
|
||
|
||
const config = resolveConfig();
|
||
const stateDir = path.join(config.stateDir, 'browse-states');
|
||
fs.mkdirSync(stateDir, { recursive: true });
|
||
const statePath = path.join(stateDir, `${name}.json`);
|
||
|
||
if (action === 'save') {
|
||
const state = await bm.saveState();
|
||
// V1: cookies + URLs only (not localStorage — breaks on load-before-navigate)
|
||
const saveData = {
|
||
version: 1,
|
||
savedAt: new Date().toISOString(),
|
||
cookies: state.cookies,
|
||
pages: state.pages.map(p => ({ url: p.url, isActive: p.isActive })),
|
||
};
|
||
fs.writeFileSync(statePath, JSON.stringify(saveData, null, 2), { mode: 0o600 });
|
||
return `State saved: ${statePath} (${state.cookies.length} cookies, ${state.pages.length} pages)\n⚠️ Cookies stored in plaintext. Delete when no longer needed.`;
|
||
}
|
||
|
||
if (action === 'load') {
|
||
if (!fs.existsSync(statePath)) throw new Error(`State not found: ${statePath}`);
|
||
const data = JSON.parse(fs.readFileSync(statePath, 'utf-8'));
|
||
if (!Array.isArray(data.cookies) || !Array.isArray(data.pages)) {
|
||
throw new Error('Invalid state file: expected cookies and pages arrays');
|
||
}
|
||
// Validate and filter cookies — reject malformed or internal-network cookies
|
||
const validatedCookies = data.cookies.filter((c: any) => {
|
||
if (typeof c !== 'object' || !c) return false;
|
||
if (typeof c.name !== 'string' || typeof c.value !== 'string') return false;
|
||
if (typeof c.domain !== 'string' || !c.domain) return false;
|
||
const d = c.domain.startsWith('.') ? c.domain.slice(1) : c.domain;
|
||
if (d === 'localhost' || d.endsWith('.internal') || d === '169.254.169.254') return false;
|
||
return true;
|
||
});
|
||
if (validatedCookies.length < data.cookies.length) {
|
||
console.warn(`[browse] Filtered ${data.cookies.length - validatedCookies.length} invalid cookies from state file`);
|
||
}
|
||
// Warn on state files older than 7 days
|
||
if (data.savedAt) {
|
||
const ageMs = Date.now() - new Date(data.savedAt).getTime();
|
||
const SEVEN_DAYS = 7 * 24 * 60 * 60 * 1000;
|
||
if (ageMs > SEVEN_DAYS) {
|
||
console.warn(`[browse] Warning: State file is ${Math.round(ageMs / 86400000)} days old. Consider re-saving.`);
|
||
}
|
||
}
|
||
// Close existing pages, then restore (replace, not merge)
|
||
bm.setFrame(null);
|
||
await bm.closeAllPages();
|
||
await bm.restoreState({
|
||
cookies: validatedCookies,
|
||
pages: data.pages.map((p: any) => ({ ...p, storage: null })),
|
||
});
|
||
return `State loaded: ${data.cookies.length} cookies, ${data.pages.length} pages`;
|
||
}
|
||
|
||
throw new Error('Usage: state save|load <name>');
|
||
}
|
||
|
||
// ─── Frame ───────────────────────────────────────
|
||
case 'frame': {
|
||
const target = args[0];
|
||
if (!target) throw new Error('Usage: frame <selector|@ref|--name name|--url pattern|main>');
|
||
|
||
if (target === 'main') {
|
||
bm.setFrame(null);
|
||
bm.clearRefs();
|
||
return 'Switched to main frame';
|
||
}
|
||
|
||
const page = bm.getPage();
|
||
let frame: Frame | null = null;
|
||
|
||
if (target === '--name') {
|
||
if (!args[1]) throw new Error('Usage: frame --name <name>');
|
||
frame = page.frame({ name: args[1] });
|
||
} else if (target === '--url') {
|
||
if (!args[1]) throw new Error('Usage: frame --url <pattern>');
|
||
frame = page.frame({ url: new RegExp(escapeRegExp(args[1])) });
|
||
} else {
|
||
// CSS selector or @ref for the iframe element
|
||
const resolved = await bm.resolveRef(target);
|
||
const locator = 'locator' in resolved ? resolved.locator : page.locator(resolved.selector);
|
||
const elementHandle = await locator.elementHandle({ timeout: 5000 });
|
||
frame = await elementHandle?.contentFrame() ?? null;
|
||
await elementHandle?.dispose();
|
||
}
|
||
|
||
if (!frame) throw new Error(`Frame not found: ${target}`);
|
||
bm.setFrame(frame);
|
||
bm.clearRefs();
|
||
return `Switched to frame: ${frame.url()}`;
|
||
}
|
||
|
||
default:
|
||
throw new Error(`Unknown meta command: ${command}`);
|
||
}
|
||
}
|