ChromeLauncher.ts

/**
 * Copyright 2023 Google Inc. All rights reserved.
 *
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 *
 *     http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */

import {mkdtemp} from 'fs/promises';
import path from 'path';

import {
  computeSystemExecutablePath,
  Browser as SupportedBrowsers,
  ChromeReleaseChannel as BrowsersChromeReleaseChannel,
} from '@puppeteer/browsers';

import type {Browser} from '../api/Browser.js';
import {debugError} from '../common/util.js';
import {USE_TAB_TARGET} from '../environment.js';
import {assert} from '../util/assert.js';

import type {
  BrowserLaunchArgumentOptions,
  ChromeReleaseChannel,
  PuppeteerNodeLaunchOptions,
} from './LaunchOptions.js';
import {ProductLauncher, type ResolvedLaunchArgs} from './ProductLauncher.js';
import type {PuppeteerNode} from './PuppeteerNode.js';
import {rm} from './util/fs.js';

/**
 * @internal
 */
export class ChromeLauncher extends ProductLauncher {
  constructor(puppeteer: PuppeteerNode) {
    super(puppeteer, 'chrome');
  }

  override launch(options: PuppeteerNodeLaunchOptions = {}): Promise<Browser> {
    const headless = options.headless ?? true;
    if (
      headless === true &&
      this.puppeteer.configuration.logLevel === 'warn' &&
      !Boolean(process.env['PUPPETEER_DISABLE_HEADLESS_WARNING'])
    ) {
      console.warn(
        [
          '\x1B[1m\x1B[43m\x1B[30m',
          'Puppeteer old Headless deprecation warning:\x1B[0m\x1B[33m',
          '  In the near future `headless: true` will default to the new Headless mode',
          '  for Chrome instead of the old Headless implementation. For more',
          '  information, please see https://developer.chrome.com/articles/new-headless/.',
          '  Consider opting in early by passing `headless: "new"` to `puppeteer.launch()`',
          '  If you encounter any bugs, please report them to https://github.com/puppeteer/puppeteer/issues/new/choose.\x1B[0m\n',
        ].join('\n  ')
      );
    }

    return super.launch(options);
  }

  /**
   * @internal
   */
  override async computeLaunchArguments(
    options: PuppeteerNodeLaunchOptions = {}
  ): Promise<ResolvedLaunchArgs> {
    const {
      ignoreDefaultArgs = false,
      args = [],
      pipe = false,
      debuggingPort,
      channel,
      executablePath,
    } = options;

    const chromeArguments = [];
    if (!ignoreDefaultArgs) {
      chromeArguments.push(...this.defaultArgs(options));
    } else if (Array.isArray(ignoreDefaultArgs)) {
      chromeArguments.push(
        ...this.defaultArgs(options).filter(arg => {
          return !ignoreDefaultArgs.includes(arg);
        })
      );
    } else {
      chromeArguments.push(...args);
    }

    if (
      !chromeArguments.some(argument => {
        return argument.startsWith('--remote-debugging-');
      })
    ) {
      if (pipe) {
        assert(
          !debuggingPort,
          'Browser should be launched with either pipe or debugging port - not both.'
        );
        chromeArguments.push('--remote-debugging-pipe');
      } else {
        chromeArguments.push(`--remote-debugging-port=${debuggingPort || 0}`);
      }
    }

    let isTempUserDataDir = false;

    // Check for the user data dir argument, which will always be set even
    // with a custom directory specified via the userDataDir option.
    let userDataDirIndex = chromeArguments.findIndex(arg => {
      return arg.startsWith('--user-data-dir');
    });
    if (userDataDirIndex < 0) {
      isTempUserDataDir = true;
      chromeArguments.push(
        `--user-data-dir=${await mkdtemp(this.getProfilePath())}`
      );
      userDataDirIndex = chromeArguments.length - 1;
    }

    const userDataDir = chromeArguments[userDataDirIndex]!.split('=', 2)[1];
    assert(typeof userDataDir === 'string', '`--user-data-dir` is malformed');

    let chromeExecutable = executablePath;
    if (!chromeExecutable) {
      assert(
        channel || !this.puppeteer._isPuppeteerCore,
        `An \`executablePath\` or \`channel\` must be specified for \`puppeteer-core\``
      );
      chromeExecutable = this.executablePath(channel);
    }

    return {
      executablePath: chromeExecutable,
      args: chromeArguments,
      isTempUserDataDir,
      userDataDir,
    };
  }

  /**
   * @internal
   */
  override async cleanUserDataDir(
    path: string,
    opts: {isTemp: boolean}
  ): Promise<void> {
    if (opts.isTemp) {
      try {
        await rm(path);
      } catch (error) {
        debugError(error);
        throw error;
      }
    }
  }

  override defaultArgs(options: BrowserLaunchArgumentOptions = {}): string[] {
    // See https://github.com/GoogleChrome/chrome-launcher/blob/main/docs/chrome-flags-for-tools.md

    const disabledFeatures = [
      'Translate',
      // AcceptCHFrame disabled because of crbug.com/1348106.
      'AcceptCHFrame',
      'MediaRouter',
      'OptimizationHints',
    ];

    if (!USE_TAB_TARGET) {
      disabledFeatures.push('Prerender2');
    }

    const chromeArguments = [
      '--allow-pre-commit-input',
      '--disable-background-networking',
      '--disable-background-timer-throttling',
      '--disable-backgrounding-occluded-windows',
      '--disable-breakpad',
      '--disable-client-side-phishing-detection',
      '--disable-component-extensions-with-background-pages',
      '--disable-component-update',
      '--disable-default-apps',
      '--disable-dev-shm-usage',
      '--disable-extensions',
      `--disable-features=${disabledFeatures.join(',')}`,
      '--disable-hang-monitor',
      '--disable-ipc-flooding-protection',
      '--disable-popup-blocking',
      '--disable-prompt-on-repost',
      '--disable-renderer-backgrounding',
      '--disable-search-engine-choice-screen',
      '--disable-sync',
      '--enable-automation',
      // TODO(sadym): remove '--enable-blink-features=IdleDetection' once
      // IdleDetection is turned on by default.
      '--enable-blink-features=IdleDetection',
      '--enable-features=NetworkServiceInProcess2',
      '--export-tagged-pdf',
      '--force-color-profile=srgb',
      '--metrics-recording-only',
      '--no-first-run',
      '--password-store=basic',
      '--use-mock-keychain',
    ];
    const {
      devtools = false,
      headless = !devtools,
      args = [],
      userDataDir,
    } = options;
    if (userDataDir) {
      chromeArguments.push(`--user-data-dir=${path.resolve(userDataDir)}`);
    }
    if (devtools) {
      chromeArguments.push('--auto-open-devtools-for-tabs');
    }
    if (headless) {
      chromeArguments.push(
        headless === 'new' ? '--headless=new' : '--headless',
        '--hide-scrollbars',
        '--mute-audio'
      );
    }
    if (
      args.every(arg => {
        return arg.startsWith('-');
      })
    ) {
      chromeArguments.push('about:blank');
    }
    chromeArguments.push(...args);
    return chromeArguments;
  }

  override executablePath(channel?: ChromeReleaseChannel): string {
    if (channel) {
      return computeSystemExecutablePath({
        browser: SupportedBrowsers.CHROME,
        channel: convertPuppeteerChannelToBrowsersChannel(channel),
      });
    } else {
      return this.resolveExecutablePath();
    }
  }
}

function convertPuppeteerChannelToBrowsersChannel(
  channel: ChromeReleaseChannel
): BrowsersChromeReleaseChannel {
  switch (channel) {
    case 'chrome':
      return BrowsersChromeReleaseChannel.STABLE;
    case 'chrome-dev':
      return BrowsersChromeReleaseChannel.DEV;
    case 'chrome-beta':
      return BrowsersChromeReleaseChannel.BETA;
    case 'chrome-canary':
      return BrowsersChromeReleaseChannel.CANARY;
  }
}