mirror of
https://github.com/grahampugh/macadmin-scripts.git
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615 lines
23 KiB
Python
Executable File
615 lines
23 KiB
Python
Executable File
#!/usr/bin/python
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# encoding: utf-8
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#
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# Copyright 2017 Greg Neagle.
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#
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# Licensed under the Apache License, Version 2.0 (the "License");
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# you may not use this file except in compliance with the License.
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# You may obtain a copy of the License at
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#
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# http://www.apache.org/licenses/LICENSE-2.0
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#
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# Unless required by applicable law or agreed to in writing, software
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# distributed under the License is distributed on an "AS IS" BASIS,
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# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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# See the License for the specific language governing permissions and
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# limitations under the License.
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#
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# Thanks to Tim Sutton for ideas, suggestions, and sample code.
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#
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'''installinstallmacos.py
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A tool to download the parts for an Install macOS app from Apple's
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softwareupdate servers and install a functioning Install macOS app onto an
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empty disk image'''
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# Python 3 compatibility shims
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from __future__ import (
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absolute_import, division, print_function, unicode_literals)
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import argparse
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import gzip
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import os
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import plistlib
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import subprocess
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import sys
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try:
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# python 2
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from urllib.parse import urlsplit
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except ImportError:
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# python 3
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from urlparse import urlsplit
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from xml.dom import minidom
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from xml.parsers.expat import ExpatError
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import xattr
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DEFAULT_SUCATALOGS = {
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'17': 'https://swscan.apple.com/content/catalogs/others/'
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'index-10.13-10.12-10.11-10.10-10.9'
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'-mountainlion-lion-snowleopard-leopard.merged-1.sucatalog',
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'18': 'https://swscan.apple.com/content/catalogs/others/'
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'index-10.14-10.13-10.12-10.11-10.10-10.9'
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'-mountainlion-lion-snowleopard-leopard.merged-1.sucatalog',
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'19': 'https://swscan.apple.com/content/catalogs/others/'
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'index-10.15-10.14-10.13-10.12-10.11-10.10-10.9'
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'-mountainlion-lion-snowleopard-leopard.merged-1.sucatalog',
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}
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SEED_CATALOGS_PLIST = (
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'/System/Library/PrivateFrameworks/Seeding.framework/Versions/Current/'
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'Resources/SeedCatalogs.plist'
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)
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def get_input(prompt=None):
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'''Python 2 and 3 wrapper for raw_input/input'''
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try:
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return raw_input(prompt)
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except NameError:
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# raw_input doesn't exist in Python 3
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return input(prompt)
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def read_plist(filepath):
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'''Wrapper for the differences between Python 2 and Python 3's plistlib'''
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try:
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with open(filepath, "rb") as fileobj:
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return plistlib.load(fileobj)
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except AttributeError:
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# plistlib module doesn't have a load function (as in Python 2)
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return plistlib.readPlist(filepath)
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def read_plist_from_string(bytestring):
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'''Wrapper for the differences between Python 2 and Python 3's plistlib'''
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try:
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return plistlib.loads(bytestring)
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except AttributeError:
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# plistlib module doesn't have a load function (as in Python 2)
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return plistlib.readPlistFromString(bytestring)
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def get_seeding_program(sucatalog_url):
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'''Returns a seeding program name based on the sucatalog_url'''
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try:
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seed_catalogs = read_plist(SEED_CATALOGS_PLIST)
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for key, value in seed_catalogs.items():
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if sucatalog_url == value:
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return key
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return ''
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except (OSError, IOError, ExpatError, AttributeError, KeyError) as err:
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print(err, file=sys.stderr)
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return ''
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def get_seed_catalog(seedname='DeveloperSeed'):
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'''Returns the developer seed sucatalog'''
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try:
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seed_catalogs = read_plist(SEED_CATALOGS_PLIST)
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return seed_catalogs.get(seedname)
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except (OSError, IOError, ExpatError, AttributeError, KeyError) as err:
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print(err, file=sys.stderr)
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return ''
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def get_seeding_programs():
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'''Returns the list of seeding program names'''
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try:
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seed_catalogs = read_plist(SEED_CATALOGS_PLIST)
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return list(seed_catalogs.keys())
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except (OSError, IOError, ExpatError, AttributeError, KeyError) as err:
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print(err, file=sys.stderr)
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return ''
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def get_default_catalog():
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'''Returns the default softwareupdate catalog for the current OS'''
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darwin_major = os.uname()[2].split('.')[0]
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return DEFAULT_SUCATALOGS.get(darwin_major)
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def make_sparse_image(volume_name, output_path):
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'''Make a sparse disk image we can install a product to'''
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cmd = ['/usr/bin/hdiutil', 'create', '-size', '16g', '-fs', 'HFS+',
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'-volname', volume_name, '-type', 'SPARSE', '-plist', output_path]
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try:
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output = subprocess.check_output(cmd)
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except subprocess.CalledProcessError as err:
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print(err, file=sys.stderr)
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exit(-1)
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try:
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return read_plist_from_string(output)[0]
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except IndexError as err:
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print('Unexpected output from hdiutil: %s' % output, file=sys.stderr)
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exit(-1)
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except ExpatError as err:
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print('Malformed output from hdiutil: %s' % output, file=sys.stderr)
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print(err, file=sys.stderr)
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exit(-1)
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def make_compressed_dmg(app_path, diskimagepath):
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"""Returns path to newly-created compressed r/o disk image containing
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Install macOS.app"""
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print('Making read-only compressed disk image containing %s...'
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% os.path.basename(app_path))
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cmd = ['/usr/bin/hdiutil', 'create', '-fs', 'HFS+',
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'-srcfolder', app_path, diskimagepath]
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try:
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subprocess.check_call(cmd)
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except subprocess.CalledProcessError as err:
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print(err, file=sys.stderr)
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else:
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print('Disk image created at: %s' % diskimagepath)
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def mountdmg(dmgpath):
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"""
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Attempts to mount the dmg at dmgpath and returns first mountpoint
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"""
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mountpoints = []
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dmgname = os.path.basename(dmgpath)
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cmd = ['/usr/bin/hdiutil', 'attach', dmgpath,
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'-mountRandom', '/tmp', '-nobrowse', '-plist',
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'-owners', 'on']
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proc = subprocess.Popen(cmd, bufsize=-1,
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stdout=subprocess.PIPE, stderr=subprocess.PIPE)
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(pliststr, err) = proc.communicate()
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if proc.returncode:
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print('Error: "%s" while mounting %s.' % (err, dmgname),
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file=sys.stderr)
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return None
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if pliststr:
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plist = read_plist_from_string(pliststr)
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for entity in plist['system-entities']:
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if 'mount-point' in entity:
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mountpoints.append(entity['mount-point'])
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return mountpoints[0]
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def unmountdmg(mountpoint):
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"""
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Unmounts the dmg at mountpoint
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"""
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proc = subprocess.Popen(['/usr/bin/hdiutil', 'detach', mountpoint],
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bufsize=-1, stdout=subprocess.PIPE,
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stderr=subprocess.PIPE)
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(dummy_output, err) = proc.communicate()
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if proc.returncode:
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print('Polite unmount failed: %s' % err, file=sys.stderr)
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print('Attempting to force unmount %s' % mountpoint, file=sys.stderr)
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# try forcing the unmount
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retcode = subprocess.call(['/usr/bin/hdiutil', 'detach', mountpoint,
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'-force'])
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if retcode:
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print('Failed to unmount %s' % mountpoint, file=sys.stderr)
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def install_product(dist_path, target_vol):
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'''Install a product to a target volume.
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Returns a boolean to indicate success or failure.'''
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# set CM_BUILD env var to make Installer bypass eligibilty checks
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# when installing packages (for machine-specific OS builds)
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os.environ["CM_BUILD"] = "CM_BUILD"
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cmd = ['/usr/sbin/installer', '-pkg', dist_path, '-target', target_vol]
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try:
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subprocess.check_call(cmd)
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except subprocess.CalledProcessError as err:
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print(err, file=sys.stderr)
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return False
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else:
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# Apple postinstall script bug ends up copying files to a path like
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# /tmp/dmg.T9ak1HApplications
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path = target_vol + 'Applications'
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if os.path.exists(path):
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print('*********************************************************')
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print('*** Working around a very dumb Apple bug in a package ***')
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print('*** postinstall script that fails to correctly target ***')
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print('*** the Install macOS.app when installed to a volume ***')
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print('*** other than the current boot volume. ***')
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print('*** Please file feedback with Apple! ***')
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print('*********************************************************')
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subprocess.check_call(
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['/usr/bin/ditto',
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path,
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os.path.join(target_vol, 'Applications')]
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)
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subprocess.check_call(['/bin/rm', '-r', path])
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return True
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class ReplicationError(Exception):
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'''A custom error when replication fails'''
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pass
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def replicate_url(full_url,
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root_dir='/tmp',
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show_progress=False,
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ignore_cache=False,
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attempt_resume=False):
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'''Downloads a URL and stores it in the same relative path on our
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filesystem. Returns a path to the replicated file.'''
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path = urlsplit(full_url)[2]
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relative_url = path.lstrip('/')
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relative_url = os.path.normpath(relative_url)
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local_file_path = os.path.join(root_dir, relative_url)
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if show_progress:
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options = '-fL'
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else:
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options = '-sfL'
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curl_cmd = ['/usr/bin/curl', options, '--create-dirs',
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'-o', local_file_path]
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if not ignore_cache and os.path.exists(local_file_path):
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curl_cmd.extend(['-z', local_file_path])
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if attempt_resume:
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curl_cmd.extend(['-C', '-'])
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curl_cmd.append(full_url)
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print("Downloading %s..." % full_url)
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try:
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subprocess.check_call(curl_cmd)
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except subprocess.CalledProcessError as err:
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raise ReplicationError(err)
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return local_file_path
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def parse_server_metadata(filename):
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'''Parses a softwareupdate server metadata file, looking for information
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of interest.
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Returns a dictionary containing title, version, and description.'''
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title = ''
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vers = ''
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try:
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md_plist = read_plist(filename)
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except (OSError, IOError, ExpatError) as err:
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print('Error reading %s: %s' % (filename, err), file=sys.stderr)
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return {}
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vers = md_plist.get('CFBundleShortVersionString', '')
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localization = md_plist.get('localization', {})
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preferred_localization = (localization.get('English') or
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localization.get('en'))
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if preferred_localization:
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title = preferred_localization.get('title', '')
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metadata = {}
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metadata['title'] = title
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metadata['version'] = vers
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return metadata
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def get_server_metadata(catalog, product_key, workdir, ignore_cache=False):
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'''Replicate ServerMetaData'''
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try:
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url = catalog['Products'][product_key]['ServerMetadataURL']
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try:
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smd_path = replicate_url(
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url, root_dir=workdir, ignore_cache=ignore_cache)
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return smd_path
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except ReplicationError as err:
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print('Could not replicate %s: %s' % (url, err), file=sys.stderr)
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return None
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except KeyError:
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#print('Malformed catalog.', file=sys.stderr)
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return None
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def parse_dist(filename):
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'''Parses a softwareupdate dist file, returning a dict of info of
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interest'''
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dist_info = {}
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try:
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dom = minidom.parse(filename)
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except ExpatError:
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print('Invalid XML in %s' % filename, file=sys.stderr)
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return dist_info
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except IOError as err:
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print('Error reading %s: %s' % (filename, err), file=sys.stderr)
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return dist_info
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titles = dom.getElementsByTagName('title')
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if titles:
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dist_info['title_from_dist'] = titles[0].firstChild.wholeText
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auxinfos = dom.getElementsByTagName('auxinfo')
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if not auxinfos:
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return dist_info
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auxinfo = auxinfos[0]
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key = None
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value = None
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children = auxinfo.childNodes
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# handle the possibility that keys from auxinfo may be nested
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# within a 'dict' element
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dict_nodes = [n for n in auxinfo.childNodes
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if n.nodeType == n.ELEMENT_NODE and
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n.tagName == 'dict']
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if dict_nodes:
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children = dict_nodes[0].childNodes
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for node in children:
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if node.nodeType == node.ELEMENT_NODE and node.tagName == 'key':
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key = node.firstChild.wholeText
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if node.nodeType == node.ELEMENT_NODE and node.tagName == 'string':
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value = node.firstChild.wholeText
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if key and value:
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dist_info[key] = value
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key = None
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value = None
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return dist_info
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def download_and_parse_sucatalog(sucatalog, workdir, ignore_cache=False):
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'''Downloads and returns a parsed softwareupdate catalog'''
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try:
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localcatalogpath = replicate_url(
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sucatalog, root_dir=workdir, ignore_cache=ignore_cache)
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except ReplicationError as err:
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print('Could not replicate %s: %s' % (sucatalog, err), file=sys.stderr)
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exit(-1)
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if os.path.splitext(localcatalogpath)[1] == '.gz':
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with gzip.open(localcatalogpath) as the_file:
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content = the_file.read()
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try:
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catalog = read_plist_from_string(content)
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return catalog
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except ExpatError as err:
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print('Error reading %s: %s' % (localcatalogpath, err),
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file=sys.stderr)
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exit(-1)
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else:
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try:
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catalog = read_plist(localcatalogpath)
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return catalog
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except (OSError, IOError, ExpatError) as err:
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print('Error reading %s: %s' % (localcatalogpath, err),
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file=sys.stderr)
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exit(-1)
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def find_mac_os_installers(catalog):
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'''Return a list of product identifiers for what appear to be macOS
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installers'''
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mac_os_installer_products = []
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if 'Products' in catalog:
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for product_key in catalog['Products'].keys():
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product = catalog['Products'][product_key]
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try:
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if product['ExtendedMetaInfo'][
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'InstallAssistantPackageIdentifiers']:
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mac_os_installer_products.append(product_key)
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except KeyError:
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continue
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return mac_os_installer_products
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def os_installer_product_info(catalog, workdir, ignore_cache=False):
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'''Returns a dict of info about products that look like macOS installers'''
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product_info = {}
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installer_products = find_mac_os_installers(catalog)
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for product_key in installer_products:
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product_info[product_key] = {}
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filename = get_server_metadata(catalog, product_key, workdir)
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if filename:
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product_info[product_key] = parse_server_metadata(filename)
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else:
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print('No server metadata for %s' % product_key)
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product_info[product_key]['title'] = None
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product_info[product_key]['version'] = None
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product = catalog['Products'][product_key]
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product_info[product_key]['PostDate'] = product['PostDate']
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distributions = product['Distributions']
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dist_url = distributions.get('English') or distributions.get('en')
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try:
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dist_path = replicate_url(
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dist_url, root_dir=workdir, ignore_cache=ignore_cache)
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except ReplicationError as err:
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print('Could not replicate %s: %s' % (dist_url, err),
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file=sys.stderr)
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else:
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dist_info = parse_dist(dist_path)
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product_info[product_key]['DistributionPath'] = dist_path
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product_info[product_key].update(dist_info)
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if not product_info[product_key]['title']:
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product_info[product_key]['title'] = dist_info.get('title_from_dist')
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if not product_info[product_key]['version']:
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product_info[product_key]['version'] = dist_info.get('VERSION')
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return product_info
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def replicate_product(catalog, product_id, workdir, ignore_cache=False):
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'''Downloads all the packages for a product'''
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product = catalog['Products'][product_id]
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for package in product.get('Packages', []):
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# TO-DO: Check 'Size' attribute and make sure
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# we have enough space on the target
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# filesystem before attempting to download
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if 'URL' in package:
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try:
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replicate_url(
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package['URL'], root_dir=workdir,
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show_progress=True, ignore_cache=ignore_cache,
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attempt_resume=(not ignore_cache))
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except ReplicationError as err:
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print('Could not replicate %s: %s' % (package['URL'], err),
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file=sys.stderr)
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exit(-1)
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if 'MetadataURL' in package:
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try:
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replicate_url(package['MetadataURL'], root_dir=workdir,
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ignore_cache=ignore_cache)
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except ReplicationError as err:
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print('Could not replicate %s: %s'
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% (package['MetadataURL'], err), file=sys.stderr)
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exit(-1)
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def find_installer_app(mountpoint):
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'''Returns the path to the Install macOS app on the mountpoint'''
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applications_dir = os.path.join(mountpoint, 'Applications')
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for item in os.listdir(applications_dir):
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if item.endswith('.app'):
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return os.path.join(applications_dir, item)
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return None
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def main():
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'''Do the main thing here'''
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parser = argparse.ArgumentParser()
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parser.add_argument('--seedprogram', default='',
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help='Which Seed Program catalog to use. Valid values '
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'are %s.' % ', '.join(get_seeding_programs()))
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parser.add_argument('--catalogurl', default='',
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help='Software Update catalog URL. This option '
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'overrides any seedprogram option.')
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parser.add_argument('--workdir', metavar='path_to_working_dir',
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default='.',
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help='Path to working directory on a volume with over '
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'10G of available space. Defaults to current working '
|
|
'directory.')
|
|
parser.add_argument('--compress', action='store_true',
|
|
help='Output a read-only compressed disk image with '
|
|
'the Install macOS app at the root. This is now the '
|
|
'default. Use --raw to get a read-write sparse image '
|
|
'with the app in the Applications directory.')
|
|
parser.add_argument('--raw', action='store_true',
|
|
help='Output a read-write sparse image '
|
|
'with the app in the Applications directory. Requires '
|
|
'less available disk space and is faster.')
|
|
parser.add_argument('--ignore-cache', action='store_true',
|
|
help='Ignore any previously cached files.')
|
|
args = parser.parse_args()
|
|
|
|
if os.getuid() != 0:
|
|
sys.exit('This command requires root (to install packages), so please '
|
|
'run again with sudo or as root.')
|
|
|
|
if args.catalogurl:
|
|
su_catalog_url = args.catalogurl
|
|
elif args.seedprogram:
|
|
su_catalog_url = get_seed_catalog(args.seedprogram)
|
|
if not su_catalog_url:
|
|
print('Could not find a catalog url for seed program %s'
|
|
% args.seedprogram, file=sys.stderr)
|
|
print('Valid seeding programs are: %s'
|
|
% ', '.join(get_seeding_programs()), file=sys.stderr)
|
|
exit(-1)
|
|
else:
|
|
su_catalog_url = get_default_catalog()
|
|
if not su_catalog_url:
|
|
print('Could not find a default catalog url for this OS version.',
|
|
file=sys.stderr)
|
|
exit(-1)
|
|
|
|
# download sucatalog and look for products that are for macOS installers
|
|
catalog = download_and_parse_sucatalog(
|
|
su_catalog_url, args.workdir, ignore_cache=args.ignore_cache)
|
|
product_info = os_installer_product_info(
|
|
catalog, args.workdir, ignore_cache=args.ignore_cache)
|
|
|
|
if not product_info:
|
|
print('No macOS installer products found in the sucatalog.',
|
|
file=sys.stderr)
|
|
exit(-1)
|
|
|
|
# display a menu of choices (some seed catalogs have multiple installers)
|
|
print('%2s %14s %10s %8s %11s %s'
|
|
% ('#', 'ProductID', 'Version', 'Build', 'Post Date', 'Title'))
|
|
for index, product_id in enumerate(product_info):
|
|
print('%2s %14s %10s %8s %11s %s' % (
|
|
index + 1,
|
|
product_id,
|
|
product_info[product_id].get('version', 'UNKNOWN'),
|
|
product_info[product_id].get('BUILD', 'UNKNOWN'),
|
|
product_info[product_id]['PostDate'].strftime('%Y-%m-%d'),
|
|
product_info[product_id]['title']
|
|
))
|
|
|
|
answer = get_input(
|
|
'\nChoose a product to download (1-%s): ' % len(product_info))
|
|
try:
|
|
index = int(answer) - 1
|
|
if index < 0:
|
|
raise ValueError
|
|
product_id = list(product_info.keys())[index]
|
|
except (ValueError, IndexError):
|
|
print('Exiting.')
|
|
exit(0)
|
|
|
|
# download all the packages for the selected product
|
|
replicate_product(
|
|
catalog, product_id, args.workdir, ignore_cache=args.ignore_cache)
|
|
|
|
# generate a name for the sparseimage
|
|
volname = ('Install_macOS_%s-%s'
|
|
% (product_info[product_id]['version'],
|
|
product_info[product_id]['BUILD']))
|
|
sparse_diskimage_path = os.path.join(args.workdir, volname + '.sparseimage')
|
|
if os.path.exists(sparse_diskimage_path):
|
|
os.unlink(sparse_diskimage_path)
|
|
|
|
# make an empty sparseimage and mount it
|
|
print('Making empty sparseimage...')
|
|
sparse_diskimage_path = make_sparse_image(volname, sparse_diskimage_path)
|
|
mountpoint = mountdmg(sparse_diskimage_path)
|
|
if mountpoint:
|
|
# install the product to the mounted sparseimage volume
|
|
success = install_product(
|
|
product_info[product_id]['DistributionPath'],
|
|
mountpoint)
|
|
if not success:
|
|
print('Product installation failed.', file=sys.stderr)
|
|
unmountdmg(mountpoint)
|
|
exit(-1)
|
|
# add the seeding program xattr to the app if applicable
|
|
seeding_program = get_seeding_program(su_catalog_url)
|
|
if seeding_program:
|
|
installer_app = find_installer_app(mountpoint)
|
|
if installer_app:
|
|
print("Adding seeding program %s extended attribute to app"
|
|
% seeding_program)
|
|
xattr.setxattr(installer_app, 'SeedProgram', seeding_program)
|
|
print('Product downloaded and installed to %s' % sparse_diskimage_path)
|
|
if args.raw:
|
|
unmountdmg(mountpoint)
|
|
else:
|
|
# if --raw option not given, create a r/o compressed diskimage
|
|
# containing the Install macOS app
|
|
compressed_diskimagepath = os.path.join(
|
|
args.workdir, volname + '.dmg')
|
|
if os.path.exists(compressed_diskimagepath):
|
|
os.unlink(compressed_diskimagepath)
|
|
app_path = find_installer_app(mountpoint)
|
|
if app_path:
|
|
make_compressed_dmg(app_path, compressed_diskimagepath)
|
|
# unmount sparseimage
|
|
unmountdmg(mountpoint)
|
|
# delete sparseimage since we don't need it any longer
|
|
os.unlink(sparse_diskimage_path)
|
|
|
|
|
|
if __name__ == '__main__':
|
|
main()
|