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#!/usr/bin/env python
# Copyright 2018 The Chromium Authors. All rights reserved.
# Use of this source code is governed by a BSD-style license that can be
# found in the LICENSE file.
"""
If should_use_hermetic_xcode.py emits "1", and the current toolchain is out of
date:
* Downloads the hermetic mac toolchain
* Requires CIPD authentication. Run `cipd auth-login`, use Google account.
* Accepts the license.
* If xcode-select and xcodebuild are not passwordless in sudoers, requires
user interaction.
* Downloads standalone binaries from [a possibly different version of Xcode].
The toolchain version can be overridden by setting MAC_TOOLCHAIN_REVISION with
the full revision, e.g. 9A235.
"""
from __future__ import print_function
import argparse
import os
import pkg_resources
import platform
import plistlib
import shutil
import subprocess
import sys
def LoadPList(path):
"""Loads Plist at |path| and returns it as a dictionary."""
if sys.version_info.major == 2:
return plistlib.readPlist(path)
with open(path, 'rb') as f:
return plistlib.load(f)
# This contains binaries from Xcode 12.5 12E262, along with the macOS 11 SDK.
# To build these packages, see comments in build/xcode_binaries.yaml
MAC_BINARIES_LABEL = 'infra_internal/ios/xcode/xcode_binaries/mac-amd64'
MAC_BINARIES_TAG = 'pBipKbKSkYGXpuOBm4-8zuvfIGeFtpGbQ4IHM9YW0xMC'
# The toolchain will not be downloaded if the minimum OS version is not met. 19
# is the major version number for macOS 10.15. 12B5044c (Xcode 12.2rc) only runs
# on 10.15.4 and newer.
MAC_MINIMUM_OS_VERSION = [19, 4]
BASE_DIR = os.path.abspath(os.path.dirname(__file__))
TOOLCHAIN_ROOT = os.path.join(BASE_DIR, 'mac_files')
TOOLCHAIN_BUILD_DIR = os.path.join(TOOLCHAIN_ROOT, 'Xcode.app')
# Always integrity-check the entire SDK. Mac SDK packages are complex and often
# hit edge cases in cipd (eg https://crbug.com/1033987,
# https://crbug.com/915278), and generally when this happens it requires manual
# intervention to fix.
# Note the trailing \n!
PARANOID_MODE = '$ParanoidMode CheckIntegrity\n'
def PlatformMeetsHermeticXcodeRequirements():
if sys.platform != 'darwin':
return True
needed = MAC_MINIMUM_OS_VERSION
major_version = [int(v) for v in platform.release().split('.')[:len(needed)]]
return major_version >= needed
def _UseHermeticToolchain():
current_dir = os.path.dirname(os.path.realpath(__file__))
script_path = os.path.join(current_dir, 'mac/should_use_hermetic_xcode.py')
proc = subprocess.Popen([script_path, 'mac'], stdout=subprocess.PIPE)
return '1' in proc.stdout.readline().decode()
def RequestCipdAuthentication():
"""Requests that the user authenticate to access Xcode CIPD packages."""
print('Access to Xcode CIPD package requires authentication.')
print('-----------------------------------------------------------------')
print()
print('You appear to be a Googler.')
print()
print('I\'m sorry for the hassle, but you may need to do a one-time manual')
print('authentication. Please run:')
print()
print(' cipd auth-login')
print()
print('and follow the instructions.')
print()
print('NOTE: Use your google.com credentials, not chromium.org.')
print()
print('-----------------------------------------------------------------')
print()
sys.stdout.flush()
def PrintError(message):
# Flush buffers to ensure correct output ordering.
sys.stdout.flush()
sys.stderr.write(message + '\n')
sys.stderr.flush()
def InstallXcodeBinaries():
"""Installs the Xcode binaries needed to build Chrome and accepts the license.
This is the replacement for InstallXcode that installs a trimmed down version
of Xcode that is OS-version agnostic.
"""
# First make sure the directory exists. It will serve as the cipd root. This
# also ensures that there will be no conflicts of cipd root.
binaries_root = os.path.join(TOOLCHAIN_ROOT, 'xcode_binaries')
if not os.path.exists(binaries_root):
os.makedirs(binaries_root)
# 'cipd ensure' is idempotent.
args = ['cipd', 'ensure', '-root', binaries_root, '-ensure-file', '-']
p = subprocess.Popen(args,
universal_newlines=True,
stdin=subprocess.PIPE,
stdout=subprocess.PIPE,
stderr=subprocess.PIPE)
stdout, stderr = p.communicate(input=PARANOID_MODE + MAC_BINARIES_LABEL +
' ' + MAC_BINARIES_TAG)
if p.returncode != 0:
print(stdout)
print(stderr)
RequestCipdAuthentication()
return 1
if sys.platform != 'darwin':
return 0
# Accept the license for this version of Xcode if it's newer than the
# currently accepted version.
cipd_xcode_version_plist_path = os.path.join(binaries_root,
'Contents/version.plist')
cipd_xcode_version_plist = LoadPList(cipd_xcode_version_plist_path)
cipd_xcode_version = cipd_xcode_version_plist['CFBundleShortVersionString']
cipd_license_path = os.path.join(binaries_root,
'Contents/Resources/LicenseInfo.plist')
cipd_license_plist = LoadPList(cipd_license_path)
cipd_license_version = cipd_license_plist['licenseID']
should_overwrite_license = True
current_license_path = '/Library/Preferences/com.apple.dt.Xcode.plist'
if os.path.exists(current_license_path):
current_license_plist = LoadPList(current_license_path)
xcode_version = current_license_plist.get(
'IDEXcodeVersionForAgreedToGMLicense')
if (xcode_version is not None and pkg_resources.parse_version(xcode_version)
>= pkg_resources.parse_version(cipd_xcode_version)):
should_overwrite_license = False
if not should_overwrite_license:
return 0
# Use puppet's sudoers script to accept the license if its available.
license_accept_script = '/usr/local/bin/xcode_accept_license.py'
if os.path.exists(license_accept_script):
args = [
'sudo', license_accept_script, '--xcode-version', cipd_xcode_version,
'--license-version', cipd_license_version
]
subprocess.check_call(args)
return 0
# Otherwise manually accept the license. This will prompt for sudo.
print('Accepting new Xcode license. Requires sudo.')
sys.stdout.flush()
args = [
'sudo', 'defaults', 'write', current_license_path,
'IDEXcodeVersionForAgreedToGMLicense', cipd_xcode_version
]
subprocess.check_call(args)
args = [
'sudo', 'defaults', 'write', current_license_path,
'IDELastGMLicenseAgreedTo', cipd_license_version
]
subprocess.check_call(args)
args = ['sudo', 'plutil', '-convert', 'xml1', current_license_path]
subprocess.check_call(args)
return 0
def main():
if not _UseHermeticToolchain():
print('Skipping Mac toolchain installation for mac')
return 0
parser = argparse.ArgumentParser(description='Download hermetic Xcode.')
args = parser.parse_args()
if not PlatformMeetsHermeticXcodeRequirements():
print('OS version does not support toolchain.')
return 0
return InstallXcodeBinaries()
if __name__ == '__main__':
sys.exit(main())
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