434 lines
15 KiB
Python
Executable File
434 lines
15 KiB
Python
Executable File
#!/usr/bin/env python3
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"""
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Gather recovery information for Macs.
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Copyright (c) 2019, vit9696
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"""
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from __future__ import print_function
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import argparse
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import datetime
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import json
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import os
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import random
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import sys
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import textwrap
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import time
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try:
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from urllib.request import Request,HTTPError,urlopen
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from urllib.parse import urlencode,urlparse
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except ImportError:
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from urllib2 import Request,HTTPError,urlopen
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from urllib import urlencode
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from urlparse import urlparse
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SELF_DIR = os.path.dirname(os.path.realpath(__file__))
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RECENT_MAC = 'Mac-7BA5B2D9E42DDD94'
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MLB_ZERO = '00000000000000000'
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MLB_VALID = 'C02749200YGJ803AX'
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MLB_PRODUCT = '00000000000J80300'
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TYPE_SID = 16
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TYPE_K = 64
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TYPE_FG = 64
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INFO_PRODUCT = 'AP'
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INFO_IMAGE_LINK = 'AU'
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INFO_IMAGE_HASH = 'AH'
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INFO_IMAGE_SESS = 'AT'
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INFO_SIGN_LINK = 'CU'
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INFO_SIGN_HASH = 'CH'
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INFO_SIGN_SESS = 'CT'
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INFO_REQURED = [ INFO_PRODUCT, INFO_IMAGE_LINK, INFO_IMAGE_HASH, INFO_IMAGE_SESS,
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INFO_SIGN_LINK, INFO_SIGN_HASH, INFO_SIGN_SESS ]
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def run_query(url, headers, post=None, raw=False):
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if post is not None:
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data = '\n'.join([entry + '=' + post[entry] for entry in post])
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if sys.version_info[0] >= 3:
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data = data.encode('utf-8')
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else:
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data = None
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req = Request(url=url, headers=headers, data=data)
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try:
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response = urlopen(req)
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if raw: return response
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return dict(response.info()), response.read()
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except HTTPError as e:
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print('ERROR: "{}" when connecting to {}'.format(e, url))
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sys.exit(1)
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def generate_id(type, id=None):
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valid_chars = ['0', '1', '2', '3', '4', '5', '6', '7', '8', '9', 'A', 'B', 'C', 'D', 'E', 'F']
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if id is None:
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return ''.join(random.choice(valid_chars) for i in range(type))
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return id
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def product_mlb(mlb):
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return '00000000000' + mlb[11] + mlb[12] + mlb[13] + mlb[14] + '00'
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def mlb_from_eeee(eeee):
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if len(eeee) != 4:
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print('ERROR: Invalid EEEE code length!')
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sys.exit(1)
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return '00000000000' + eeee + '00'
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def get_session(args):
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headers = {
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'Host' : 'osrecovery.apple.com',
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'Connection': 'close',
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'User-Agent': 'InternetRecovery/1.0',
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}
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headers, output = run_query('http://osrecovery.apple.com/', headers)
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if args.verbose:
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print('Session headers:')
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for header in headers:
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print('{}: {}'.format(header, headers[header]))
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for header in headers:
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if header.lower() == 'set-cookie':
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cookies = headers[header].split('; ')
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for cookie in cookies:
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if cookie.startswith('session='):
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return cookie
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raise RuntimeError('No session in headers ' + str(headers))
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def get_image_info(session, bid, mlb=MLB_ZERO, diag = False, os_type = 'default', cid=None):
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headers = {
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'Host' : 'osrecovery.apple.com',
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'Connection' : 'close',
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'User-Agent' : 'InternetRecovery/1.0',
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'Cookie' : session,
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'Content-Type': 'text/plain',
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}
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post = {
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'cid': generate_id(TYPE_SID, cid),
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'sn' : mlb,
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'bid': bid,
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'k' : generate_id(TYPE_K),
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'fg' : generate_id(TYPE_FG)
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}
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if diag:
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url = 'http://osrecovery.apple.com/InstallationPayload/Diagnostics'
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else:
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url = 'http://osrecovery.apple.com/InstallationPayload/RecoveryImage'
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post['os'] = os_type
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headers, output = run_query(url, headers, post)
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if sys.version_info[0] >= 3:
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output = output.decode('utf-8')
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info = {}
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for line in output.split('\n'):
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try:
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key, value = line.split(': ')
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info[key] = value
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except:
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continue
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for k in INFO_REQURED:
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if k not in info:
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raise RuntimeError('Missing key ' + k)
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return info
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def save_image(url, sess, filename='', dir=''):
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purl = urlparse(url)
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headers = {
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'Host' : purl.hostname,
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'Connection': 'close',
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'User-Agent': 'InternetRecovery/1.0',
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'Cookie' : '='.join(['AssetToken', sess])
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}
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if filename == '':
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filename = os.path.basename(purl.path)
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if filename.find('/') >= 0 or filename == '':
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raise RuntimeError('Invalid save path ' + filename)
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print('Saving ' + url + ' to ' + filename + '...')
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with open (os.path.join(dir, filename), 'wb') as fh:
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response = run_query(url, headers, raw=True)
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size = 0
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while True:
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chunk = response.read(2**20)
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if not chunk:
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break
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fh.write(chunk)
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size += len(chunk)
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print('\r{} MBs downloaded...'.format(size / (2**20)), end='')
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sys.stdout.flush()
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print('\rDownload complete!')
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def action_download(args):
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"""
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Reference information for queries:
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Recovery latest:
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cid=3076CE439155BA14
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sn=...
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bid=Mac-E43C1C25D4880AD6
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k=4BE523BB136EB12B1758C70DB43BDD485EBCB6A457854245F9E9FF0587FB790C
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os=latest
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fg=B2E6AA07DB9088BE5BDB38DB2EA824FDDFB6C3AC5272203B32D89F9D8E3528DC
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Recovery default:
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cid=4A35CB95FF396EE7
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sn=...
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bid=Mac-E43C1C25D4880AD6
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k=0A385E6FFC3DDD990A8A1F4EC8B98C92CA5E19C9FF1DD26508C54936D8523121
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os=default
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fg=B2E6AA07DB9088BE5BDB38DB2EA824FDDFB6C3AC5272203B32D89F9D8E3528DC
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Diagnostics:
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cid=050C59B51497CEC8
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sn=...
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bid=Mac-E43C1C25D4880AD6
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k=37D42A8282FE04A12A7D946304F403E56A2155B9622B385F3EB959A2FBAB8C93
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fg=B2E6AA07DB9088BE5BDB38DB2EA824FDDFB6C3AC5272203B32D89F9D8E3528DC
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"""
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session = get_session(args)
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info = get_image_info(session, bid=args.board_id, mlb=args.mlb,
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diag=args.diagnostics, os_type=args.os_type)
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if args.verbose:
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print(info)
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print('Downloading ' + info[INFO_PRODUCT] + '...')
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dmgname = '' if args.basename == '' else args.basename + '.dmg'
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save_image(info[INFO_IMAGE_LINK], info[INFO_IMAGE_SESS], dmgname, args.outdir)
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cnkname = '' if args.basename == '' else args.basename + '.chunklist'
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save_image(info[INFO_SIGN_LINK], info[INFO_SIGN_SESS], cnkname, args.outdir)
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return 0
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def action_selfcheck(args):
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"""
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Sanity check server logic for recovery:
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if not valid(bid):
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return error()
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ppp = get_ppp(sn)
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if not valid(ppp):
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return latest_recovery(bid = bid) # Returns newest for bid.
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if valid(sn):
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if os == 'default':
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return default_recovery(sn = sn, ppp = ppp) # Returns oldest for sn.
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else:
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return latest_recovery(sn = sn, ppp = ppp) # Returns newest for sn.
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return default_recovery(ppp = ppp) # Returns oldest.
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"""
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session = get_session(args)
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valid_default = get_image_info(session, bid=RECENT_MAC, mlb=MLB_VALID,
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diag=False, os_type='default')
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valid_latest = get_image_info(session, bid=RECENT_MAC, mlb=MLB_VALID,
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diag=False, os_type='latest')
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product_default = get_image_info(session, bid=RECENT_MAC, mlb=MLB_PRODUCT,
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diag=False, os_type='default')
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product_latest = get_image_info(session, bid=RECENT_MAC, mlb=MLB_PRODUCT,
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diag=False, os_type='latest')
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generic_default = get_image_info(session, bid=RECENT_MAC, mlb=MLB_ZERO,
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diag=False, os_type='default')
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generic_latest = get_image_info(session, bid=RECENT_MAC, mlb=MLB_ZERO,
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diag=False, os_type='latest')
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if args.verbose:
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print(valid_default)
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print(valid_latest)
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print(product_default)
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print(product_latest)
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print(generic_default)
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print(generic_latest)
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if valid_default[INFO_PRODUCT] == valid_latest[INFO_PRODUCT]:
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# Valid MLB must give different default and latest if this is not a too new product.
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print('ERROR: Cannot determine any previous product, got {}'.format(valid_default[INFO_PRODUCT]))
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return 1
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if product_default[INFO_PRODUCT] != product_latest[INFO_PRODUCT]:
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# Product-only MLB must give the same value for default and latest.
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print('ERROR: Latest and default do not match for product MLB, got {} and {}'.format(
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product_default[INFO_PRODUCT], product_latest[INFO_PRODUCT]))
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return 1
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if generic_default[INFO_PRODUCT] != generic_latest[INFO_PRODUCT]:
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# Zero MLB always give the same value for default and latest.
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print('ERROR: Generic MLB gives different product, got {} and {}'.format(
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generic_default[INFO_PRODUCT], generic_latest[INFO_PRODUCT]))
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return 1
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if valid_latest[INFO_PRODUCT] != generic_latest[INFO_PRODUCT]:
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# Valid MLB must always equal generic MLB.
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print('ERROR: Cannot determine unified latest product, got {} and {}'.format(
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valid_latest[INFO_PRODUCT], generic_latest[INFO_PRODUCT]))
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return 1
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if product_default[INFO_PRODUCT] != valid_default[INFO_PRODUCT]:
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# Product-only MLB can give the same value with valid default MLB.
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# This is not an error for all models, but for our chosen code it is.
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print('ERROR: Valid and product MLB give mismatch, got {} and {}'.format(
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product_default[INFO_PRODUCT], valid_default[INFO_PRODUCT]))
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return 1
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print('SUCCESS: Found no discrepancies with MLB validation algorithm!')
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return 0
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def action_verify(args):
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"""
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Try to verify MLB serial number.
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"""
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session = get_session(args)
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generic_latest = get_image_info(session, bid=RECENT_MAC, mlb=MLB_ZERO,
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diag=False, os_type='latest')
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uvalid_default = get_image_info(session, bid=args.board_id, mlb=args.mlb,
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diag=False, os_type='default')
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uvalid_latest = get_image_info(session, bid=args.board_id, mlb=args.mlb,
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diag=False, os_type='latest')
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uproduct_default = get_image_info(session, bid=args.board_id, mlb=product_mlb(args.mlb),
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diag=False, os_type='default')
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if args.verbose:
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print(generic_latest)
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print(uvalid_default)
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print(uvalid_latest)
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print(uproduct_default)
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# Verify our MLB number.
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if uvalid_default[INFO_PRODUCT] != uvalid_latest[INFO_PRODUCT]:
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if uvalid_latest[INFO_PRODUCT] == generic_latest[INFO_PRODUCT]:
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print('SUCCESS: {} MLB looks valid and supported!'.format(args.mlb))
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else:
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print('SUCCESS: {} MLB looks valid, but probably unsupported!'.format(args.mlb))
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return 0
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print('UNKNOWN: Run selfcheck, check your board-id, or try again later!')
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# Here we have matching default and latest products. This can only be true for very
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# new models. These models get either latest or special builds.
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if uvalid_default[INFO_PRODUCT] == generic_latest[INFO_PRODUCT]:
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print('UNKNOWN: {} MLB can be valid if very new!'.format(args.mlb))
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return 0
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if uproduct_default[INFO_PRODUCT] != uvalid_default[INFO_PRODUCT]:
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print('UNKNOWN: {} MLB looks invalid, other models use product {} instead of {}!'.format(
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args.mlb, uproduct_default[INFO_PRODUCT], uvalid_default[INFO_PRODUCT]))
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return 0
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print('UNKNOWN: {} MLB can be valid if very new and using special builds!'.format(args.mlb))
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return 0
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def action_guess(args):
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"""
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Attempt to guess which model does this MLB belong.
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"""
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mlb = args.mlb
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anon = mlb.startswith('000')
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with open(args.board_db, 'r') as fh:
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db = json.load(fh)
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supported = {}
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session = get_session(args)
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generic_latest = get_image_info(session, bid=RECENT_MAC, mlb=MLB_ZERO,
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diag=False, os_type='latest')
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for model in db:
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try:
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if anon:
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# For anonymous lookup check when given model does not match latest.
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model_latest = get_image_info(session, bid=model, mlb=MLB_ZERO,
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diag=False, os_type='latest')
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if model_latest[INFO_PRODUCT] != generic_latest[INFO_PRODUCT]:
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if db[model] == 'current':
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print('WARN: Skipped {} due to using latest product {} instead of {}'.format(
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model, model_latest[INFO_PRODUCT], generic_latest[INFO_PRODUCT]))
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continue
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user_default = get_image_info(session, bid=model, mlb=mlb,
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diag=False, os_type='default')
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if user_default[INFO_PRODUCT] != generic_latest[INFO_PRODUCT]:
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supported[model] = [db[model], user_default[INFO_PRODUCT], generic_latest[INFO_PRODUCT]]
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else:
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# For normal lookup check when given model has mismatching normal and latest.
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user_latest = get_image_info(session, bid=model, mlb=mlb,
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diag=False, os_type='latest')
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user_default = get_image_info(session, bid=model, mlb=mlb,
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diag=False, os_type='default')
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if user_latest[INFO_PRODUCT] != user_default[INFO_PRODUCT]:
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supported[model] = [db[model], user_default[INFO_PRODUCT], user_latest[INFO_PRODUCT]]
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except Exception as e:
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print('WARN: Failed to check {}, exception: {}'.format(model, str(e)))
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if len(supported) > 0:
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print('SUCCESS: MLB {} looks supported for:'.format(mlb))
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for model in supported:
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print('- {}, up to {}, default: {}, latest: {}'.format(model, supported[model][0],
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supported[model][1], supported[model][2]))
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return 0
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print('UNKNOWN: Failed to determine supported models for MLB {}!'.format(mlb))
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def main():
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parser = argparse.ArgumentParser(description='Gather recovery information for Macs')
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parser.add_argument('action', choices = ['download', 'selfcheck', 'verify', 'guess'],
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help='Action to perform: "download" - performs recovery downloading,'
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' "selfcheck" checks whether MLB serial validation is possible, "verify" performs'
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' MLB serial verification, "guess" tries to find suitable mac model for MLB.')
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parser.add_argument('-o', '--outdir', type=str, default=os.getcwd(),
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help='customise output directory for downloading, defaults to current directory')
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parser.add_argument('-n', '--basename', type=str, default='',
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help='customise base name for downloading, defaults to remote name')
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parser.add_argument('-b', '--board-id', type=str, default=RECENT_MAC,
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help='use specified board identifier for downloading, defaults to ' + RECENT_MAC)
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parser.add_argument('-m', '--mlb', type=str, default=MLB_ZERO,
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help='use specified logic board serial for downloading, defaults to ' + MLB_ZERO)
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parser.add_argument('-e', '--code', type=str, default='',
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help='generate product logic board serial with specified product EEEE code')
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parser.add_argument('-os', '--os-type', type=str, default='default', choices = ['default', 'latest'],
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help='use specified os type, defaults to default ' + MLB_ZERO)
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parser.add_argument('-diag', '--diagnostics', action='store_true', help='download diagnostics image')
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parser.add_argument('-v', '--verbose', action='store_true', help='print debug information')
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parser.add_argument('-db', '--board-db', type=str, default=os.path.join(SELF_DIR, 'boards.json'),
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help='use custom board list for checking, defaults to boards.json')
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args = parser.parse_args()
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if args.code != '':
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args.mlb = mlb_from_eeee(args.code)
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if len(args.mlb) != 17:
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print('ERROR: Cannot use MLBs in non 17 character format!')
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sys.exit(1)
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if args.action == 'download':
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return action_download(args)
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elif args.action == 'selfcheck':
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return action_selfcheck(args)
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elif args.action == 'verify':
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return action_verify(args)
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elif args.action == 'guess':
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return action_guess(args)
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else:
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assert(False)
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if __name__ == '__main__':
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sys.exit(main())
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