d14b895665
Support a first stage ramdisk which will include the targets placed into TARGET_RAMDISK_OUT. This replaces the existing ramdisk on existing devices. All system images are now built to be mounted as the root dir. Devices with a first stage ramdisk will switch root to the system partition. BOARD_BUILD_SYSTEM_ROOT_IMAGE remains and is used to specify if the system partition is going to be directly used as rootfs without the ramdisk. Bug: 79173823 Bug: 79758715 Test: hikey boots, sailfish boots Test: OTA walleye from P to master Change-Id: Idbb2dccc6340b0235a4bef03e11e420a9ed154b6
2035 lines
68 KiB
Python
2035 lines
68 KiB
Python
# Copyright (C) 2008 The Android Open Source Project
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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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from __future__ import print_function
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import copy
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import errno
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import getopt
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import getpass
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import gzip
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import imp
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import os
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import platform
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import re
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import shlex
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import shutil
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import string
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import subprocess
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import sys
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import tempfile
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import threading
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import time
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import zipfile
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from hashlib import sha1, sha256
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import blockimgdiff
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import sparse_img
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class Options(object):
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def __init__(self):
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platform_search_path = {
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"linux2": "out/host/linux-x86",
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"darwin": "out/host/darwin-x86",
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}
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self.search_path = platform_search_path.get(sys.platform)
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self.signapk_path = "framework/signapk.jar" # Relative to search_path
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self.signapk_shared_library_path = "lib64" # Relative to search_path
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self.extra_signapk_args = []
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self.java_path = "java" # Use the one on the path by default.
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self.java_args = ["-Xmx2048m"] # The default JVM args.
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self.public_key_suffix = ".x509.pem"
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self.private_key_suffix = ".pk8"
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# use otatools built boot_signer by default
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self.boot_signer_path = "boot_signer"
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self.boot_signer_args = []
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self.verity_signer_path = None
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self.verity_signer_args = []
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self.verbose = False
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self.tempfiles = []
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self.device_specific = None
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self.extras = {}
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self.info_dict = None
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self.source_info_dict = None
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self.target_info_dict = None
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self.worker_threads = None
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# Stash size cannot exceed cache_size * threshold.
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self.cache_size = None
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self.stash_threshold = 0.8
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OPTIONS = Options()
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# Values for "certificate" in apkcerts that mean special things.
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SPECIAL_CERT_STRINGS = ("PRESIGNED", "EXTERNAL")
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# The partitions allowed to be signed by AVB (Android verified boot 2.0).
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AVB_PARTITIONS = ('boot', 'recovery', 'system', 'vendor', 'product',
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'product_services', 'dtbo', 'odm')
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class ErrorCode(object):
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"""Define error_codes for failures that happen during the actual
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update package installation.
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Error codes 0-999 are reserved for failures before the package
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installation (i.e. low battery, package verification failure).
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Detailed code in 'bootable/recovery/error_code.h' """
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SYSTEM_VERIFICATION_FAILURE = 1000
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SYSTEM_UPDATE_FAILURE = 1001
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SYSTEM_UNEXPECTED_CONTENTS = 1002
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SYSTEM_NONZERO_CONTENTS = 1003
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SYSTEM_RECOVER_FAILURE = 1004
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VENDOR_VERIFICATION_FAILURE = 2000
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VENDOR_UPDATE_FAILURE = 2001
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VENDOR_UNEXPECTED_CONTENTS = 2002
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VENDOR_NONZERO_CONTENTS = 2003
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VENDOR_RECOVER_FAILURE = 2004
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OEM_PROP_MISMATCH = 3000
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FINGERPRINT_MISMATCH = 3001
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THUMBPRINT_MISMATCH = 3002
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OLDER_BUILD = 3003
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DEVICE_MISMATCH = 3004
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BAD_PATCH_FILE = 3005
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INSUFFICIENT_CACHE_SPACE = 3006
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TUNE_PARTITION_FAILURE = 3007
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APPLY_PATCH_FAILURE = 3008
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class ExternalError(RuntimeError):
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pass
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def Run(args, verbose=None, **kwargs):
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"""Create and return a subprocess.Popen object.
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Caller can specify if the command line should be printed. The global
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OPTIONS.verbose will be used if not specified.
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"""
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if verbose is None:
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verbose = OPTIONS.verbose
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if verbose:
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print(" running: ", " ".join(args))
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return subprocess.Popen(args, **kwargs)
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def RoundUpTo4K(value):
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rounded_up = value + 4095
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return rounded_up - (rounded_up % 4096)
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def CloseInheritedPipes():
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""" Gmake in MAC OS has file descriptor (PIPE) leak. We close those fds
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before doing other work."""
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if platform.system() != "Darwin":
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return
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for d in range(3, 1025):
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try:
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stat = os.fstat(d)
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if stat is not None:
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pipebit = stat[0] & 0x1000
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if pipebit != 0:
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os.close(d)
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except OSError:
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pass
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def LoadInfoDict(input_file, input_dir=None):
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"""Read and parse the META/misc_info.txt key/value pairs from the
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input target files and return a dict."""
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def read_helper(fn):
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if isinstance(input_file, zipfile.ZipFile):
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return input_file.read(fn)
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else:
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path = os.path.join(input_file, *fn.split("/"))
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try:
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with open(path) as f:
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return f.read()
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except IOError as e:
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if e.errno == errno.ENOENT:
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raise KeyError(fn)
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try:
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d = LoadDictionaryFromLines(read_helper("META/misc_info.txt").split("\n"))
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except KeyError:
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raise ValueError("can't find META/misc_info.txt in input target-files")
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assert "recovery_api_version" in d
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assert "fstab_version" in d
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# A few properties are stored as links to the files in the out/ directory.
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# It works fine with the build system. However, they are no longer available
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# when (re)generating from target_files zip. If input_dir is not None, we
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# are doing repacking. Redirect those properties to the actual files in the
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# unzipped directory.
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if input_dir is not None:
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# We carry a copy of file_contexts.bin under META/. If not available,
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# search BOOT/RAMDISK/. Note that sometimes we may need a different file
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# to build images than the one running on device, in that case, we must
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# have the one for image generation copied to META/.
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fc_basename = os.path.basename(d.get("selinux_fc", "file_contexts"))
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fc_config = os.path.join(input_dir, "META", fc_basename)
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assert os.path.exists(fc_config)
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d["selinux_fc"] = fc_config
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# Similarly we need to redirect "root_dir", and "root_fs_config".
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d["root_dir"] = os.path.join(input_dir, "ROOT")
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d["root_fs_config"] = os.path.join(
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input_dir, "META", "root_filesystem_config.txt")
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# Redirect {system,vendor}_base_fs_file.
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if "system_base_fs_file" in d:
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basename = os.path.basename(d["system_base_fs_file"])
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system_base_fs_file = os.path.join(input_dir, "META", basename)
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if os.path.exists(system_base_fs_file):
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d["system_base_fs_file"] = system_base_fs_file
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else:
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print("Warning: failed to find system base fs file: %s" % (
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system_base_fs_file,))
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del d["system_base_fs_file"]
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if "vendor_base_fs_file" in d:
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basename = os.path.basename(d["vendor_base_fs_file"])
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vendor_base_fs_file = os.path.join(input_dir, "META", basename)
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if os.path.exists(vendor_base_fs_file):
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d["vendor_base_fs_file"] = vendor_base_fs_file
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else:
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print("Warning: failed to find vendor base fs file: %s" % (
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vendor_base_fs_file,))
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del d["vendor_base_fs_file"]
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def makeint(key):
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if key in d:
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d[key] = int(d[key], 0)
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makeint("recovery_api_version")
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makeint("blocksize")
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makeint("system_size")
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makeint("vendor_size")
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makeint("userdata_size")
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makeint("cache_size")
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makeint("recovery_size")
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makeint("boot_size")
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makeint("fstab_version")
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system_root_image = d.get("system_root_image") == "true"
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if d.get("no_recovery") != "true":
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recovery_fstab_path = "RECOVERY/RAMDISK/system/etc/recovery.fstab"
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if isinstance(input_file, zipfile.ZipFile):
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if recovery_fstab_path not in input_file.namelist():
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recovery_fstab_path = "RECOVERY/RAMDISK/etc/recovery.fstab"
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else:
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path = os.path.join(input_file, *recovery_fstab_path.split("/"))
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if not os.path.exists(path):
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recovery_fstab_path = "RECOVERY/RAMDISK/etc/recovery.fstab"
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d["fstab"] = LoadRecoveryFSTab(
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read_helper, d["fstab_version"], recovery_fstab_path, system_root_image)
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elif d.get("recovery_as_boot") == "true":
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recovery_fstab_path = "BOOT/RAMDISK/system/etc/recovery.fstab"
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if isinstance(input_file, zipfile.ZipFile):
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if recovery_fstab_path not in input_file.namelist():
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recovery_fstab_path = "BOOT/RAMDISK/etc/recovery.fstab"
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else:
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path = os.path.join(input_file, *recovery_fstab_path.split("/"))
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if not os.path.exists(path):
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recovery_fstab_path = "BOOT/RAMDISK/etc/recovery.fstab"
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d["fstab"] = LoadRecoveryFSTab(
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read_helper, d["fstab_version"], recovery_fstab_path, system_root_image)
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else:
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d["fstab"] = None
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d["build.prop"] = LoadBuildProp(read_helper, 'SYSTEM/build.prop')
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d["vendor.build.prop"] = LoadBuildProp(read_helper, 'VENDOR/build.prop')
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# Set up the salt (based on fingerprint or thumbprint) that will be used when
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# adding AVB footer.
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if d.get("avb_enable") == "true":
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fp = None
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if "build.prop" in d:
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build_prop = d["build.prop"]
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if "ro.build.fingerprint" in build_prop:
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fp = build_prop["ro.build.fingerprint"]
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elif "ro.build.thumbprint" in build_prop:
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fp = build_prop["ro.build.thumbprint"]
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if fp:
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d["avb_salt"] = sha256(fp).hexdigest()
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return d
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def LoadBuildProp(read_helper, prop_file):
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try:
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data = read_helper(prop_file)
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except KeyError:
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print("Warning: could not read %s" % (prop_file,))
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data = ""
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return LoadDictionaryFromLines(data.split("\n"))
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def LoadDictionaryFromLines(lines):
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d = {}
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for line in lines:
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line = line.strip()
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if not line or line.startswith("#"):
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continue
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if "=" in line:
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name, value = line.split("=", 1)
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d[name] = value
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return d
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def LoadRecoveryFSTab(read_helper, fstab_version, recovery_fstab_path,
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system_root_image=False):
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class Partition(object):
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def __init__(self, mount_point, fs_type, device, length, context):
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self.mount_point = mount_point
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self.fs_type = fs_type
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self.device = device
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self.length = length
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self.context = context
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try:
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data = read_helper(recovery_fstab_path)
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except KeyError:
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print("Warning: could not find {}".format(recovery_fstab_path))
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data = ""
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assert fstab_version == 2
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d = {}
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for line in data.split("\n"):
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line = line.strip()
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if not line or line.startswith("#"):
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continue
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# <src> <mnt_point> <type> <mnt_flags and options> <fs_mgr_flags>
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pieces = line.split()
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if len(pieces) != 5:
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raise ValueError("malformed recovery.fstab line: \"%s\"" % (line,))
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# Ignore entries that are managed by vold.
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options = pieces[4]
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if "voldmanaged=" in options:
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continue
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# It's a good line, parse it.
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length = 0
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options = options.split(",")
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for i in options:
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if i.startswith("length="):
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length = int(i[7:])
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else:
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# Ignore all unknown options in the unified fstab.
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continue
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mount_flags = pieces[3]
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# Honor the SELinux context if present.
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context = None
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for i in mount_flags.split(","):
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if i.startswith("context="):
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context = i
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mount_point = pieces[1]
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d[mount_point] = Partition(mount_point=mount_point, fs_type=pieces[2],
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device=pieces[0], length=length, context=context)
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# / is used for the system mount point when the root directory is included in
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# system. Other areas assume system is always at "/system" so point /system
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# at /.
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if system_root_image:
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assert not d.has_key("/system") and d.has_key("/")
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d["/system"] = d["/"]
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return d
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def DumpInfoDict(d):
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for k, v in sorted(d.items()):
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print("%-25s = (%s) %s" % (k, type(v).__name__, v))
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def AppendAVBSigningArgs(cmd, partition):
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"""Append signing arguments for avbtool."""
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# e.g., "--key path/to/signing_key --algorithm SHA256_RSA4096"
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key_path = OPTIONS.info_dict.get("avb_" + partition + "_key_path")
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algorithm = OPTIONS.info_dict.get("avb_" + partition + "_algorithm")
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if key_path and algorithm:
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cmd.extend(["--key", key_path, "--algorithm", algorithm])
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avb_salt = OPTIONS.info_dict.get("avb_salt")
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# make_vbmeta_image doesn't like "--salt" (and it's not needed).
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if avb_salt and partition != "vbmeta":
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cmd.extend(["--salt", avb_salt])
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def GetAvbChainedPartitionArg(partition, info_dict, key=None):
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"""Constructs and returns the arg to build or verify a chained partition.
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Args:
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partition: The partition name.
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info_dict: The info dict to look up the key info and rollback index
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location.
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key: The key to be used for building or verifying the partition. Defaults to
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the key listed in info_dict.
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Returns:
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A string of form "partition:rollback_index_location:key" that can be used to
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build or verify vbmeta image.
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Raises:
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AssertionError: When it fails to extract the public key with avbtool.
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"""
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if key is None:
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key = info_dict["avb_" + partition + "_key_path"]
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avbtool = os.getenv('AVBTOOL') or info_dict["avb_avbtool"]
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pubkey_path = MakeTempFile(prefix="avb-", suffix=".pubkey")
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proc = Run(
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[avbtool, "extract_public_key", "--key", key, "--output", pubkey_path],
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stdout=subprocess.PIPE, stderr=subprocess.STDOUT)
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stdoutdata, _ = proc.communicate()
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assert proc.returncode == 0, \
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"Failed to extract pubkey for {}:\n{}".format(
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partition, stdoutdata)
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rollback_index_location = info_dict[
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"avb_" + partition + "_rollback_index_location"]
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return "{}:{}:{}".format(partition, rollback_index_location, pubkey_path)
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def _BuildBootableImage(sourcedir, fs_config_file, info_dict=None,
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has_ramdisk=False, two_step_image=False):
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"""Build a bootable image from the specified sourcedir.
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Take a kernel, cmdline, and optionally a ramdisk directory from the input (in
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'sourcedir'), and turn them into a boot image. 'two_step_image' indicates if
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we are building a two-step special image (i.e. building a recovery image to
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be loaded into /boot in two-step OTAs).
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Return the image data, or None if sourcedir does not appear to contains files
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for building the requested image.
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"""
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def make_ramdisk():
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ramdisk_img = tempfile.NamedTemporaryFile()
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if os.access(fs_config_file, os.F_OK):
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cmd = ["mkbootfs", "-f", fs_config_file,
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os.path.join(sourcedir, "RAMDISK")]
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else:
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cmd = ["mkbootfs", os.path.join(sourcedir, "RAMDISK")]
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p1 = Run(cmd, stdout=subprocess.PIPE)
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p2 = Run(["minigzip"], stdin=p1.stdout, stdout=ramdisk_img.file.fileno())
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p2.wait()
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p1.wait()
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assert p1.returncode == 0, "mkbootfs of %s ramdisk failed" % (sourcedir,)
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assert p2.returncode == 0, "minigzip of %s ramdisk failed" % (sourcedir,)
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return ramdisk_img
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if not os.access(os.path.join(sourcedir, "kernel"), os.F_OK):
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return None
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if has_ramdisk and not os.access(os.path.join(sourcedir, "RAMDISK"), os.F_OK):
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return None
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if info_dict is None:
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info_dict = OPTIONS.info_dict
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img = tempfile.NamedTemporaryFile()
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if has_ramdisk:
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ramdisk_img = make_ramdisk()
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# use MKBOOTIMG from environ, or "mkbootimg" if empty or not set
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mkbootimg = os.getenv('MKBOOTIMG') or "mkbootimg"
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cmd = [mkbootimg, "--kernel", os.path.join(sourcedir, "kernel")]
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fn = os.path.join(sourcedir, "second")
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if os.access(fn, os.F_OK):
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cmd.append("--second")
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cmd.append(fn)
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fn = os.path.join(sourcedir, "cmdline")
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if os.access(fn, os.F_OK):
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cmd.append("--cmdline")
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cmd.append(open(fn).read().rstrip("\n"))
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|
|
fn = os.path.join(sourcedir, "base")
|
|
if os.access(fn, os.F_OK):
|
|
cmd.append("--base")
|
|
cmd.append(open(fn).read().rstrip("\n"))
|
|
|
|
fn = os.path.join(sourcedir, "pagesize")
|
|
if os.access(fn, os.F_OK):
|
|
cmd.append("--pagesize")
|
|
cmd.append(open(fn).read().rstrip("\n"))
|
|
|
|
args = info_dict.get("mkbootimg_args")
|
|
if args and args.strip():
|
|
cmd.extend(shlex.split(args))
|
|
|
|
args = info_dict.get("mkbootimg_version_args")
|
|
if args and args.strip():
|
|
cmd.extend(shlex.split(args))
|
|
|
|
if has_ramdisk:
|
|
cmd.extend(["--ramdisk", ramdisk_img.name])
|
|
|
|
img_unsigned = None
|
|
if info_dict.get("vboot"):
|
|
img_unsigned = tempfile.NamedTemporaryFile()
|
|
cmd.extend(["--output", img_unsigned.name])
|
|
else:
|
|
cmd.extend(["--output", img.name])
|
|
|
|
# "boot" or "recovery", without extension.
|
|
partition_name = os.path.basename(sourcedir).lower()
|
|
|
|
if (partition_name == "recovery" and
|
|
info_dict.get("include_recovery_dtbo") == "true"):
|
|
fn = os.path.join(sourcedir, "recovery_dtbo")
|
|
cmd.extend(["--recovery_dtbo", fn])
|
|
|
|
p = Run(cmd, stdout=subprocess.PIPE)
|
|
p.communicate()
|
|
assert p.returncode == 0, "mkbootimg of %s image failed" % (partition_name,)
|
|
|
|
if (info_dict.get("boot_signer") == "true" and
|
|
info_dict.get("verity_key")):
|
|
# Hard-code the path as "/boot" for two-step special recovery image (which
|
|
# will be loaded into /boot during the two-step OTA).
|
|
if two_step_image:
|
|
path = "/boot"
|
|
else:
|
|
path = "/" + partition_name
|
|
cmd = [OPTIONS.boot_signer_path]
|
|
cmd.extend(OPTIONS.boot_signer_args)
|
|
cmd.extend([path, img.name,
|
|
info_dict["verity_key"] + ".pk8",
|
|
info_dict["verity_key"] + ".x509.pem", img.name])
|
|
p = Run(cmd, stdout=subprocess.PIPE)
|
|
p.communicate()
|
|
assert p.returncode == 0, "boot_signer of %s image failed" % path
|
|
|
|
# Sign the image if vboot is non-empty.
|
|
elif info_dict.get("vboot"):
|
|
path = "/" + partition_name
|
|
img_keyblock = tempfile.NamedTemporaryFile()
|
|
# We have switched from the prebuilt futility binary to using the tool
|
|
# (futility-host) built from the source. Override the setting in the old
|
|
# TF.zip.
|
|
futility = info_dict["futility"]
|
|
if futility.startswith("prebuilts/"):
|
|
futility = "futility-host"
|
|
cmd = [info_dict["vboot_signer_cmd"], futility,
|
|
img_unsigned.name, info_dict["vboot_key"] + ".vbpubk",
|
|
info_dict["vboot_key"] + ".vbprivk",
|
|
info_dict["vboot_subkey"] + ".vbprivk",
|
|
img_keyblock.name,
|
|
img.name]
|
|
p = Run(cmd, stdout=subprocess.PIPE)
|
|
p.communicate()
|
|
assert p.returncode == 0, "vboot_signer of %s image failed" % path
|
|
|
|
# Clean up the temp files.
|
|
img_unsigned.close()
|
|
img_keyblock.close()
|
|
|
|
# AVB: if enabled, calculate and add hash to boot.img or recovery.img.
|
|
if info_dict.get("avb_enable") == "true":
|
|
avbtool = os.getenv('AVBTOOL') or info_dict["avb_avbtool"]
|
|
part_size = info_dict[partition_name + "_size"]
|
|
cmd = [avbtool, "add_hash_footer", "--image", img.name,
|
|
"--partition_size", str(part_size), "--partition_name",
|
|
partition_name]
|
|
AppendAVBSigningArgs(cmd, partition_name)
|
|
args = info_dict.get("avb_" + partition_name + "_add_hash_footer_args")
|
|
if args and args.strip():
|
|
cmd.extend(shlex.split(args))
|
|
p = Run(cmd, stdout=subprocess.PIPE)
|
|
p.communicate()
|
|
assert p.returncode == 0, "avbtool add_hash_footer of %s failed" % (
|
|
partition_name,)
|
|
|
|
img.seek(os.SEEK_SET, 0)
|
|
data = img.read()
|
|
|
|
if has_ramdisk:
|
|
ramdisk_img.close()
|
|
img.close()
|
|
|
|
return data
|
|
|
|
|
|
def GetBootableImage(name, prebuilt_name, unpack_dir, tree_subdir,
|
|
info_dict=None, two_step_image=False):
|
|
"""Return a File object with the desired bootable image.
|
|
|
|
Look for it in 'unpack_dir'/BOOTABLE_IMAGES under the name 'prebuilt_name',
|
|
otherwise look for it under 'unpack_dir'/IMAGES, otherwise construct it from
|
|
the source files in 'unpack_dir'/'tree_subdir'."""
|
|
|
|
prebuilt_path = os.path.join(unpack_dir, "BOOTABLE_IMAGES", prebuilt_name)
|
|
if os.path.exists(prebuilt_path):
|
|
print("using prebuilt %s from BOOTABLE_IMAGES..." % (prebuilt_name,))
|
|
return File.FromLocalFile(name, prebuilt_path)
|
|
|
|
prebuilt_path = os.path.join(unpack_dir, "IMAGES", prebuilt_name)
|
|
if os.path.exists(prebuilt_path):
|
|
print("using prebuilt %s from IMAGES..." % (prebuilt_name,))
|
|
return File.FromLocalFile(name, prebuilt_path)
|
|
|
|
print("building image from target_files %s..." % (tree_subdir,))
|
|
|
|
if info_dict is None:
|
|
info_dict = OPTIONS.info_dict
|
|
|
|
# With system_root_image == "true", we don't pack ramdisk into the boot image.
|
|
# Unless "recovery_as_boot" is specified, in which case we carry the ramdisk
|
|
# for recovery.
|
|
has_ramdisk = (info_dict.get("system_root_image") != "true" or
|
|
prebuilt_name != "boot.img" or
|
|
info_dict.get("recovery_as_boot") == "true")
|
|
|
|
fs_config = "META/" + tree_subdir.lower() + "_filesystem_config.txt"
|
|
data = _BuildBootableImage(os.path.join(unpack_dir, tree_subdir),
|
|
os.path.join(unpack_dir, fs_config),
|
|
info_dict, has_ramdisk, two_step_image)
|
|
if data:
|
|
return File(name, data)
|
|
return None
|
|
|
|
|
|
def Gunzip(in_filename, out_filename):
|
|
"""Gunzips the given gzip compressed file to a given output file."""
|
|
with gzip.open(in_filename, "rb") as in_file, \
|
|
open(out_filename, "wb") as out_file:
|
|
shutil.copyfileobj(in_file, out_file)
|
|
|
|
|
|
def UnzipTemp(filename, pattern=None):
|
|
"""Unzips the given archive into a temporary directory and returns the name.
|
|
|
|
If filename is of the form "foo.zip+bar.zip", unzip foo.zip into a temp dir,
|
|
then unzip bar.zip into that_dir/BOOTABLE_IMAGES.
|
|
|
|
Returns:
|
|
The name of the temporary directory.
|
|
"""
|
|
|
|
def unzip_to_dir(filename, dirname):
|
|
cmd = ["unzip", "-o", "-q", filename, "-d", dirname]
|
|
if pattern is not None:
|
|
cmd.extend(pattern)
|
|
p = Run(cmd, stdout=subprocess.PIPE, stderr=subprocess.STDOUT)
|
|
stdoutdata, _ = p.communicate()
|
|
if p.returncode != 0:
|
|
raise ExternalError(
|
|
"Failed to unzip input target-files \"{}\":\n{}".format(
|
|
filename, stdoutdata))
|
|
|
|
tmp = MakeTempDir(prefix="targetfiles-")
|
|
m = re.match(r"^(.*[.]zip)\+(.*[.]zip)$", filename, re.IGNORECASE)
|
|
if m:
|
|
unzip_to_dir(m.group(1), tmp)
|
|
unzip_to_dir(m.group(2), os.path.join(tmp, "BOOTABLE_IMAGES"))
|
|
filename = m.group(1)
|
|
else:
|
|
unzip_to_dir(filename, tmp)
|
|
|
|
return tmp
|
|
|
|
|
|
def GetSparseImage(which, tmpdir, input_zip, allow_shared_blocks):
|
|
"""Returns a SparseImage object suitable for passing to BlockImageDiff.
|
|
|
|
This function loads the specified sparse image from the given path, and
|
|
performs additional processing for OTA purpose. For example, it always adds
|
|
block 0 to clobbered blocks list. It also detects files that cannot be
|
|
reconstructed from the block list, for whom we should avoid applying imgdiff.
|
|
|
|
Args:
|
|
which: The partition name, which must be "system" or "vendor".
|
|
tmpdir: The directory that contains the prebuilt image and block map file.
|
|
input_zip: The target-files ZIP archive.
|
|
allow_shared_blocks: Whether having shared blocks is allowed.
|
|
|
|
Returns:
|
|
A SparseImage object, with file_map info loaded.
|
|
"""
|
|
assert which in ("system", "vendor")
|
|
|
|
path = os.path.join(tmpdir, "IMAGES", which + ".img")
|
|
mappath = os.path.join(tmpdir, "IMAGES", which + ".map")
|
|
|
|
# The image and map files must have been created prior to calling
|
|
# ota_from_target_files.py (since LMP).
|
|
assert os.path.exists(path) and os.path.exists(mappath)
|
|
|
|
# In ext4 filesystems, block 0 might be changed even being mounted R/O. We add
|
|
# it to clobbered_blocks so that it will be written to the target
|
|
# unconditionally. Note that they are still part of care_map. (Bug: 20939131)
|
|
clobbered_blocks = "0"
|
|
|
|
image = sparse_img.SparseImage(path, mappath, clobbered_blocks,
|
|
allow_shared_blocks=allow_shared_blocks)
|
|
|
|
# block.map may contain less blocks, because mke2fs may skip allocating blocks
|
|
# if they contain all zeros. We can't reconstruct such a file from its block
|
|
# list. Tag such entries accordingly. (Bug: 65213616)
|
|
for entry in image.file_map:
|
|
# Skip artificial names, such as "__ZERO", "__NONZERO-1".
|
|
if not entry.startswith('/'):
|
|
continue
|
|
|
|
# "/system/framework/am.jar" => "SYSTEM/framework/am.jar". Note that the
|
|
# filename listed in system.map may contain an additional leading slash
|
|
# (i.e. "//system/framework/am.jar"). Using lstrip to get consistent
|
|
# results.
|
|
arcname = string.replace(entry, which, which.upper(), 1).lstrip('/')
|
|
|
|
# Special handling another case, where files not under /system
|
|
# (e.g. "/sbin/charger") are packed under ROOT/ in a target_files.zip.
|
|
if which == 'system' and not arcname.startswith('SYSTEM'):
|
|
arcname = 'ROOT/' + arcname
|
|
|
|
assert arcname in input_zip.namelist(), \
|
|
"Failed to find the ZIP entry for {}".format(entry)
|
|
|
|
info = input_zip.getinfo(arcname)
|
|
ranges = image.file_map[entry]
|
|
|
|
# If a RangeSet has been tagged as using shared blocks while loading the
|
|
# image, its block list must be already incomplete due to that reason. Don't
|
|
# give it 'incomplete' tag to avoid messing up the imgdiff stats.
|
|
if ranges.extra.get('uses_shared_blocks'):
|
|
continue
|
|
|
|
if RoundUpTo4K(info.file_size) > ranges.size() * 4096:
|
|
ranges.extra['incomplete'] = True
|
|
|
|
return image
|
|
|
|
|
|
def GetKeyPasswords(keylist):
|
|
"""Given a list of keys, prompt the user to enter passwords for
|
|
those which require them. Return a {key: password} dict. password
|
|
will be None if the key has no password."""
|
|
|
|
no_passwords = []
|
|
need_passwords = []
|
|
key_passwords = {}
|
|
devnull = open("/dev/null", "w+b")
|
|
for k in sorted(keylist):
|
|
# We don't need a password for things that aren't really keys.
|
|
if k in SPECIAL_CERT_STRINGS:
|
|
no_passwords.append(k)
|
|
continue
|
|
|
|
p = Run(["openssl", "pkcs8", "-in", k+OPTIONS.private_key_suffix,
|
|
"-inform", "DER", "-nocrypt"],
|
|
stdin=devnull.fileno(),
|
|
stdout=devnull.fileno(),
|
|
stderr=subprocess.STDOUT)
|
|
p.communicate()
|
|
if p.returncode == 0:
|
|
# Definitely an unencrypted key.
|
|
no_passwords.append(k)
|
|
else:
|
|
p = Run(["openssl", "pkcs8", "-in", k+OPTIONS.private_key_suffix,
|
|
"-inform", "DER", "-passin", "pass:"],
|
|
stdin=devnull.fileno(),
|
|
stdout=devnull.fileno(),
|
|
stderr=subprocess.PIPE)
|
|
_, stderr = p.communicate()
|
|
if p.returncode == 0:
|
|
# Encrypted key with empty string as password.
|
|
key_passwords[k] = ''
|
|
elif stderr.startswith('Error decrypting key'):
|
|
# Definitely encrypted key.
|
|
# It would have said "Error reading key" if it didn't parse correctly.
|
|
need_passwords.append(k)
|
|
else:
|
|
# Potentially, a type of key that openssl doesn't understand.
|
|
# We'll let the routines in signapk.jar handle it.
|
|
no_passwords.append(k)
|
|
devnull.close()
|
|
|
|
key_passwords.update(PasswordManager().GetPasswords(need_passwords))
|
|
key_passwords.update(dict.fromkeys(no_passwords))
|
|
return key_passwords
|
|
|
|
|
|
def GetMinSdkVersion(apk_name):
|
|
"""Gets the minSdkVersion declared in the APK.
|
|
|
|
It calls 'aapt' to query the embedded minSdkVersion from the given APK file.
|
|
This can be both a decimal number (API Level) or a codename.
|
|
|
|
Args:
|
|
apk_name: The APK filename.
|
|
|
|
Returns:
|
|
The parsed SDK version string.
|
|
|
|
Raises:
|
|
ExternalError: On failing to obtain the min SDK version.
|
|
"""
|
|
proc = Run(
|
|
["aapt", "dump", "badging", apk_name], stdout=subprocess.PIPE,
|
|
stderr=subprocess.PIPE)
|
|
stdoutdata, stderrdata = proc.communicate()
|
|
if proc.returncode != 0:
|
|
raise ExternalError(
|
|
"Failed to obtain minSdkVersion: aapt return code {}:\n{}\n{}".format(
|
|
proc.returncode, stdoutdata, stderrdata))
|
|
|
|
for line in stdoutdata.split("\n"):
|
|
# Looking for lines such as sdkVersion:'23' or sdkVersion:'M'.
|
|
m = re.match(r'sdkVersion:\'([^\']*)\'', line)
|
|
if m:
|
|
return m.group(1)
|
|
raise ExternalError("No minSdkVersion returned by aapt")
|
|
|
|
|
|
def GetMinSdkVersionInt(apk_name, codename_to_api_level_map):
|
|
"""Returns the minSdkVersion declared in the APK as a number (API Level).
|
|
|
|
If minSdkVersion is set to a codename, it is translated to a number using the
|
|
provided map.
|
|
|
|
Args:
|
|
apk_name: The APK filename.
|
|
|
|
Returns:
|
|
The parsed SDK version number.
|
|
|
|
Raises:
|
|
ExternalError: On failing to get the min SDK version number.
|
|
"""
|
|
version = GetMinSdkVersion(apk_name)
|
|
try:
|
|
return int(version)
|
|
except ValueError:
|
|
# Not a decimal number. Codename?
|
|
if version in codename_to_api_level_map:
|
|
return codename_to_api_level_map[version]
|
|
else:
|
|
raise ExternalError(
|
|
"Unknown minSdkVersion: '{}'. Known codenames: {}".format(
|
|
version, codename_to_api_level_map))
|
|
|
|
|
|
def SignFile(input_name, output_name, key, password, min_api_level=None,
|
|
codename_to_api_level_map=None, whole_file=False):
|
|
"""Sign the input_name zip/jar/apk, producing output_name. Use the
|
|
given key and password (the latter may be None if the key does not
|
|
have a password.
|
|
|
|
If whole_file is true, use the "-w" option to SignApk to embed a
|
|
signature that covers the whole file in the archive comment of the
|
|
zip file.
|
|
|
|
min_api_level is the API Level (int) of the oldest platform this file may end
|
|
up on. If not specified for an APK, the API Level is obtained by interpreting
|
|
the minSdkVersion attribute of the APK's AndroidManifest.xml.
|
|
|
|
codename_to_api_level_map is needed to translate the codename which may be
|
|
encountered as the APK's minSdkVersion.
|
|
"""
|
|
if codename_to_api_level_map is None:
|
|
codename_to_api_level_map = {}
|
|
|
|
java_library_path = os.path.join(
|
|
OPTIONS.search_path, OPTIONS.signapk_shared_library_path)
|
|
|
|
cmd = ([OPTIONS.java_path] + OPTIONS.java_args +
|
|
["-Djava.library.path=" + java_library_path,
|
|
"-jar", os.path.join(OPTIONS.search_path, OPTIONS.signapk_path)] +
|
|
OPTIONS.extra_signapk_args)
|
|
if whole_file:
|
|
cmd.append("-w")
|
|
|
|
min_sdk_version = min_api_level
|
|
if min_sdk_version is None:
|
|
if not whole_file:
|
|
min_sdk_version = GetMinSdkVersionInt(
|
|
input_name, codename_to_api_level_map)
|
|
if min_sdk_version is not None:
|
|
cmd.extend(["--min-sdk-version", str(min_sdk_version)])
|
|
|
|
cmd.extend([key + OPTIONS.public_key_suffix,
|
|
key + OPTIONS.private_key_suffix,
|
|
input_name, output_name])
|
|
|
|
p = Run(cmd, stdin=subprocess.PIPE, stdout=subprocess.PIPE,
|
|
stderr=subprocess.STDOUT)
|
|
if password is not None:
|
|
password += "\n"
|
|
stdoutdata, _ = p.communicate(password)
|
|
if p.returncode != 0:
|
|
raise ExternalError(
|
|
"Failed to run signapk.jar: return code {}:\n{}".format(
|
|
p.returncode, stdoutdata))
|
|
|
|
|
|
def CheckSize(data, target, info_dict):
|
|
"""Checks the data string passed against the max size limit.
|
|
|
|
For non-AVB images, raise exception if the data is too big. Print a warning
|
|
if the data is nearing the maximum size.
|
|
|
|
For AVB images, the actual image size should be identical to the limit.
|
|
|
|
Args:
|
|
data: A string that contains all the data for the partition.
|
|
target: The partition name. The ".img" suffix is optional.
|
|
info_dict: The dict to be looked up for relevant info.
|
|
"""
|
|
if target.endswith(".img"):
|
|
target = target[:-4]
|
|
mount_point = "/" + target
|
|
|
|
fs_type = None
|
|
limit = None
|
|
if info_dict["fstab"]:
|
|
if mount_point == "/userdata":
|
|
mount_point = "/data"
|
|
p = info_dict["fstab"][mount_point]
|
|
fs_type = p.fs_type
|
|
device = p.device
|
|
if "/" in device:
|
|
device = device[device.rfind("/")+1:]
|
|
limit = info_dict.get(device + "_size")
|
|
if not fs_type or not limit:
|
|
return
|
|
|
|
size = len(data)
|
|
# target could be 'userdata' or 'cache'. They should follow the non-AVB image
|
|
# path.
|
|
if info_dict.get("avb_enable") == "true" and target in AVB_PARTITIONS:
|
|
if size != limit:
|
|
raise ExternalError(
|
|
"Mismatching image size for %s: expected %d actual %d" % (
|
|
target, limit, size))
|
|
else:
|
|
pct = float(size) * 100.0 / limit
|
|
msg = "%s size (%d) is %.2f%% of limit (%d)" % (target, size, pct, limit)
|
|
if pct >= 99.0:
|
|
raise ExternalError(msg)
|
|
elif pct >= 95.0:
|
|
print("\n WARNING: %s\n" % (msg,))
|
|
elif OPTIONS.verbose:
|
|
print(" ", msg)
|
|
|
|
|
|
def ReadApkCerts(tf_zip):
|
|
"""Parses the APK certs info from a given target-files zip.
|
|
|
|
Given a target-files ZipFile, parses the META/apkcerts.txt entry and returns a
|
|
tuple with the following elements: (1) a dictionary that maps packages to
|
|
certs (based on the "certificate" and "private_key" attributes in the file;
|
|
(2) a string representing the extension of compressed APKs in the target files
|
|
(e.g ".gz", ".bro").
|
|
|
|
Args:
|
|
tf_zip: The input target_files ZipFile (already open).
|
|
|
|
Returns:
|
|
(certmap, ext): certmap is a dictionary that maps packages to certs; ext is
|
|
the extension string of compressed APKs (e.g. ".gz"), or None if there's
|
|
no compressed APKs.
|
|
"""
|
|
certmap = {}
|
|
compressed_extension = None
|
|
|
|
# META/apkcerts.txt contains the info for _all_ the packages known at build
|
|
# time. Filter out the ones that are not installed.
|
|
installed_files = set()
|
|
for name in tf_zip.namelist():
|
|
basename = os.path.basename(name)
|
|
if basename:
|
|
installed_files.add(basename)
|
|
|
|
for line in tf_zip.read("META/apkcerts.txt").split("\n"):
|
|
line = line.strip()
|
|
if not line:
|
|
continue
|
|
m = re.match(
|
|
r'^name="(?P<NAME>.*)"\s+certificate="(?P<CERT>.*)"\s+'
|
|
r'private_key="(?P<PRIVKEY>.*?)"(\s+compressed="(?P<COMPRESSED>.*)")?$',
|
|
line)
|
|
if not m:
|
|
continue
|
|
|
|
matches = m.groupdict()
|
|
cert = matches["CERT"]
|
|
privkey = matches["PRIVKEY"]
|
|
name = matches["NAME"]
|
|
this_compressed_extension = matches["COMPRESSED"]
|
|
|
|
public_key_suffix_len = len(OPTIONS.public_key_suffix)
|
|
private_key_suffix_len = len(OPTIONS.private_key_suffix)
|
|
if cert in SPECIAL_CERT_STRINGS and not privkey:
|
|
certmap[name] = cert
|
|
elif (cert.endswith(OPTIONS.public_key_suffix) and
|
|
privkey.endswith(OPTIONS.private_key_suffix) and
|
|
cert[:-public_key_suffix_len] == privkey[:-private_key_suffix_len]):
|
|
certmap[name] = cert[:-public_key_suffix_len]
|
|
else:
|
|
raise ValueError("Failed to parse line from apkcerts.txt:\n" + line)
|
|
|
|
if not this_compressed_extension:
|
|
continue
|
|
|
|
# Only count the installed files.
|
|
filename = name + '.' + this_compressed_extension
|
|
if filename not in installed_files:
|
|
continue
|
|
|
|
# Make sure that all the values in the compression map have the same
|
|
# extension. We don't support multiple compression methods in the same
|
|
# system image.
|
|
if compressed_extension:
|
|
if this_compressed_extension != compressed_extension:
|
|
raise ValueError(
|
|
"Multiple compressed extensions: {} vs {}".format(
|
|
compressed_extension, this_compressed_extension))
|
|
else:
|
|
compressed_extension = this_compressed_extension
|
|
|
|
return (certmap,
|
|
("." + compressed_extension) if compressed_extension else None)
|
|
|
|
|
|
COMMON_DOCSTRING = """
|
|
Global options
|
|
|
|
-p (--path) <dir>
|
|
Prepend <dir>/bin to the list of places to search for binaries run by this
|
|
script, and expect to find jars in <dir>/framework.
|
|
|
|
-s (--device_specific) <file>
|
|
Path to the Python module containing device-specific releasetools code.
|
|
|
|
-x (--extra) <key=value>
|
|
Add a key/value pair to the 'extras' dict, which device-specific extension
|
|
code may look at.
|
|
|
|
-v (--verbose)
|
|
Show command lines being executed.
|
|
|
|
-h (--help)
|
|
Display this usage message and exit.
|
|
"""
|
|
|
|
def Usage(docstring):
|
|
print(docstring.rstrip("\n"))
|
|
print(COMMON_DOCSTRING)
|
|
|
|
|
|
def ParseOptions(argv,
|
|
docstring,
|
|
extra_opts="", extra_long_opts=(),
|
|
extra_option_handler=None):
|
|
"""Parse the options in argv and return any arguments that aren't
|
|
flags. docstring is the calling module's docstring, to be displayed
|
|
for errors and -h. extra_opts and extra_long_opts are for flags
|
|
defined by the caller, which are processed by passing them to
|
|
extra_option_handler."""
|
|
|
|
try:
|
|
opts, args = getopt.getopt(
|
|
argv, "hvp:s:x:" + extra_opts,
|
|
["help", "verbose", "path=", "signapk_path=",
|
|
"signapk_shared_library_path=", "extra_signapk_args=",
|
|
"java_path=", "java_args=", "public_key_suffix=",
|
|
"private_key_suffix=", "boot_signer_path=", "boot_signer_args=",
|
|
"verity_signer_path=", "verity_signer_args=", "device_specific=",
|
|
"extra="] +
|
|
list(extra_long_opts))
|
|
except getopt.GetoptError as err:
|
|
Usage(docstring)
|
|
print("**", str(err), "**")
|
|
sys.exit(2)
|
|
|
|
for o, a in opts:
|
|
if o in ("-h", "--help"):
|
|
Usage(docstring)
|
|
sys.exit()
|
|
elif o in ("-v", "--verbose"):
|
|
OPTIONS.verbose = True
|
|
elif o in ("-p", "--path"):
|
|
OPTIONS.search_path = a
|
|
elif o in ("--signapk_path",):
|
|
OPTIONS.signapk_path = a
|
|
elif o in ("--signapk_shared_library_path",):
|
|
OPTIONS.signapk_shared_library_path = a
|
|
elif o in ("--extra_signapk_args",):
|
|
OPTIONS.extra_signapk_args = shlex.split(a)
|
|
elif o in ("--java_path",):
|
|
OPTIONS.java_path = a
|
|
elif o in ("--java_args",):
|
|
OPTIONS.java_args = shlex.split(a)
|
|
elif o in ("--public_key_suffix",):
|
|
OPTIONS.public_key_suffix = a
|
|
elif o in ("--private_key_suffix",):
|
|
OPTIONS.private_key_suffix = a
|
|
elif o in ("--boot_signer_path",):
|
|
OPTIONS.boot_signer_path = a
|
|
elif o in ("--boot_signer_args",):
|
|
OPTIONS.boot_signer_args = shlex.split(a)
|
|
elif o in ("--verity_signer_path",):
|
|
OPTIONS.verity_signer_path = a
|
|
elif o in ("--verity_signer_args",):
|
|
OPTIONS.verity_signer_args = shlex.split(a)
|
|
elif o in ("-s", "--device_specific"):
|
|
OPTIONS.device_specific = a
|
|
elif o in ("-x", "--extra"):
|
|
key, value = a.split("=", 1)
|
|
OPTIONS.extras[key] = value
|
|
else:
|
|
if extra_option_handler is None or not extra_option_handler(o, a):
|
|
assert False, "unknown option \"%s\"" % (o,)
|
|
|
|
if OPTIONS.search_path:
|
|
os.environ["PATH"] = (os.path.join(OPTIONS.search_path, "bin") +
|
|
os.pathsep + os.environ["PATH"])
|
|
|
|
return args
|
|
|
|
|
|
def MakeTempFile(prefix='tmp', suffix=''):
|
|
"""Make a temp file and add it to the list of things to be deleted
|
|
when Cleanup() is called. Return the filename."""
|
|
fd, fn = tempfile.mkstemp(prefix=prefix, suffix=suffix)
|
|
os.close(fd)
|
|
OPTIONS.tempfiles.append(fn)
|
|
return fn
|
|
|
|
|
|
def MakeTempDir(prefix='tmp', suffix=''):
|
|
"""Makes a temporary dir that will be cleaned up with a call to Cleanup().
|
|
|
|
Returns:
|
|
The absolute pathname of the new directory.
|
|
"""
|
|
dir_name = tempfile.mkdtemp(suffix=suffix, prefix=prefix)
|
|
OPTIONS.tempfiles.append(dir_name)
|
|
return dir_name
|
|
|
|
|
|
def Cleanup():
|
|
for i in OPTIONS.tempfiles:
|
|
if os.path.isdir(i):
|
|
shutil.rmtree(i, ignore_errors=True)
|
|
else:
|
|
os.remove(i)
|
|
del OPTIONS.tempfiles[:]
|
|
|
|
|
|
class PasswordManager(object):
|
|
def __init__(self):
|
|
self.editor = os.getenv("EDITOR")
|
|
self.pwfile = os.getenv("ANDROID_PW_FILE")
|
|
|
|
def GetPasswords(self, items):
|
|
"""Get passwords corresponding to each string in 'items',
|
|
returning a dict. (The dict may have keys in addition to the
|
|
values in 'items'.)
|
|
|
|
Uses the passwords in $ANDROID_PW_FILE if available, letting the
|
|
user edit that file to add more needed passwords. If no editor is
|
|
available, or $ANDROID_PW_FILE isn't define, prompts the user
|
|
interactively in the ordinary way.
|
|
"""
|
|
|
|
current = self.ReadFile()
|
|
|
|
first = True
|
|
while True:
|
|
missing = []
|
|
for i in items:
|
|
if i not in current or not current[i]:
|
|
missing.append(i)
|
|
# Are all the passwords already in the file?
|
|
if not missing:
|
|
return current
|
|
|
|
for i in missing:
|
|
current[i] = ""
|
|
|
|
if not first:
|
|
print("key file %s still missing some passwords." % (self.pwfile,))
|
|
answer = raw_input("try to edit again? [y]> ").strip()
|
|
if answer and answer[0] not in 'yY':
|
|
raise RuntimeError("key passwords unavailable")
|
|
first = False
|
|
|
|
current = self.UpdateAndReadFile(current)
|
|
|
|
def PromptResult(self, current): # pylint: disable=no-self-use
|
|
"""Prompt the user to enter a value (password) for each key in
|
|
'current' whose value is fales. Returns a new dict with all the
|
|
values.
|
|
"""
|
|
result = {}
|
|
for k, v in sorted(current.iteritems()):
|
|
if v:
|
|
result[k] = v
|
|
else:
|
|
while True:
|
|
result[k] = getpass.getpass(
|
|
"Enter password for %s key> " % k).strip()
|
|
if result[k]:
|
|
break
|
|
return result
|
|
|
|
def UpdateAndReadFile(self, current):
|
|
if not self.editor or not self.pwfile:
|
|
return self.PromptResult(current)
|
|
|
|
f = open(self.pwfile, "w")
|
|
os.chmod(self.pwfile, 0o600)
|
|
f.write("# Enter key passwords between the [[[ ]]] brackets.\n")
|
|
f.write("# (Additional spaces are harmless.)\n\n")
|
|
|
|
first_line = None
|
|
sorted_list = sorted([(not v, k, v) for (k, v) in current.iteritems()])
|
|
for i, (_, k, v) in enumerate(sorted_list):
|
|
f.write("[[[ %s ]]] %s\n" % (v, k))
|
|
if not v and first_line is None:
|
|
# position cursor on first line with no password.
|
|
first_line = i + 4
|
|
f.close()
|
|
|
|
p = Run([self.editor, "+%d" % (first_line,), self.pwfile])
|
|
_, _ = p.communicate()
|
|
|
|
return self.ReadFile()
|
|
|
|
def ReadFile(self):
|
|
result = {}
|
|
if self.pwfile is None:
|
|
return result
|
|
try:
|
|
f = open(self.pwfile, "r")
|
|
for line in f:
|
|
line = line.strip()
|
|
if not line or line[0] == '#':
|
|
continue
|
|
m = re.match(r"^\[\[\[\s*(.*?)\s*\]\]\]\s*(\S+)$", line)
|
|
if not m:
|
|
print("failed to parse password file: ", line)
|
|
else:
|
|
result[m.group(2)] = m.group(1)
|
|
f.close()
|
|
except IOError as e:
|
|
if e.errno != errno.ENOENT:
|
|
print("error reading password file: ", str(e))
|
|
return result
|
|
|
|
|
|
def ZipWrite(zip_file, filename, arcname=None, perms=0o644,
|
|
compress_type=None):
|
|
import datetime
|
|
|
|
# http://b/18015246
|
|
# Python 2.7's zipfile implementation wrongly thinks that zip64 is required
|
|
# for files larger than 2GiB. We can work around this by adjusting their
|
|
# limit. Note that `zipfile.writestr()` will not work for strings larger than
|
|
# 2GiB. The Python interpreter sometimes rejects strings that large (though
|
|
# it isn't clear to me exactly what circumstances cause this).
|
|
# `zipfile.write()` must be used directly to work around this.
|
|
#
|
|
# This mess can be avoided if we port to python3.
|
|
saved_zip64_limit = zipfile.ZIP64_LIMIT
|
|
zipfile.ZIP64_LIMIT = (1 << 32) - 1
|
|
|
|
if compress_type is None:
|
|
compress_type = zip_file.compression
|
|
if arcname is None:
|
|
arcname = filename
|
|
|
|
saved_stat = os.stat(filename)
|
|
|
|
try:
|
|
# `zipfile.write()` doesn't allow us to pass ZipInfo, so just modify the
|
|
# file to be zipped and reset it when we're done.
|
|
os.chmod(filename, perms)
|
|
|
|
# Use a fixed timestamp so the output is repeatable.
|
|
# Note: Use of fromtimestamp rather than utcfromtimestamp here is
|
|
# intentional. zip stores datetimes in local time without a time zone
|
|
# attached, so we need "epoch" but in the local time zone to get 2009/01/01
|
|
# in the zip archive.
|
|
local_epoch = datetime.datetime.fromtimestamp(0)
|
|
timestamp = (datetime.datetime(2009, 1, 1) - local_epoch).total_seconds()
|
|
os.utime(filename, (timestamp, timestamp))
|
|
|
|
zip_file.write(filename, arcname=arcname, compress_type=compress_type)
|
|
finally:
|
|
os.chmod(filename, saved_stat.st_mode)
|
|
os.utime(filename, (saved_stat.st_atime, saved_stat.st_mtime))
|
|
zipfile.ZIP64_LIMIT = saved_zip64_limit
|
|
|
|
|
|
def ZipWriteStr(zip_file, zinfo_or_arcname, data, perms=None,
|
|
compress_type=None):
|
|
"""Wrap zipfile.writestr() function to work around the zip64 limit.
|
|
|
|
Even with the ZIP64_LIMIT workaround, it won't allow writing a string
|
|
longer than 2GiB. It gives 'OverflowError: size does not fit in an int'
|
|
when calling crc32(bytes).
|
|
|
|
But it still works fine to write a shorter string into a large zip file.
|
|
We should use ZipWrite() whenever possible, and only use ZipWriteStr()
|
|
when we know the string won't be too long.
|
|
"""
|
|
|
|
saved_zip64_limit = zipfile.ZIP64_LIMIT
|
|
zipfile.ZIP64_LIMIT = (1 << 32) - 1
|
|
|
|
if not isinstance(zinfo_or_arcname, zipfile.ZipInfo):
|
|
zinfo = zipfile.ZipInfo(filename=zinfo_or_arcname)
|
|
zinfo.compress_type = zip_file.compression
|
|
if perms is None:
|
|
perms = 0o100644
|
|
else:
|
|
zinfo = zinfo_or_arcname
|
|
|
|
# If compress_type is given, it overrides the value in zinfo.
|
|
if compress_type is not None:
|
|
zinfo.compress_type = compress_type
|
|
|
|
# If perms is given, it has a priority.
|
|
if perms is not None:
|
|
# If perms doesn't set the file type, mark it as a regular file.
|
|
if perms & 0o770000 == 0:
|
|
perms |= 0o100000
|
|
zinfo.external_attr = perms << 16
|
|
|
|
# Use a fixed timestamp so the output is repeatable.
|
|
zinfo.date_time = (2009, 1, 1, 0, 0, 0)
|
|
|
|
zip_file.writestr(zinfo, data)
|
|
zipfile.ZIP64_LIMIT = saved_zip64_limit
|
|
|
|
|
|
def ZipDelete(zip_filename, entries):
|
|
"""Deletes entries from a ZIP file.
|
|
|
|
Since deleting entries from a ZIP file is not supported, it shells out to
|
|
'zip -d'.
|
|
|
|
Args:
|
|
zip_filename: The name of the ZIP file.
|
|
entries: The name of the entry, or the list of names to be deleted.
|
|
|
|
Raises:
|
|
AssertionError: In case of non-zero return from 'zip'.
|
|
"""
|
|
if isinstance(entries, basestring):
|
|
entries = [entries]
|
|
cmd = ["zip", "-d", zip_filename] + entries
|
|
proc = Run(cmd, stdout=subprocess.PIPE, stderr=subprocess.STDOUT)
|
|
stdoutdata, _ = proc.communicate()
|
|
assert proc.returncode == 0, "Failed to delete %s:\n%s" % (entries,
|
|
stdoutdata)
|
|
|
|
|
|
def ZipClose(zip_file):
|
|
# http://b/18015246
|
|
# zipfile also refers to ZIP64_LIMIT during close() when it writes out the
|
|
# central directory.
|
|
saved_zip64_limit = zipfile.ZIP64_LIMIT
|
|
zipfile.ZIP64_LIMIT = (1 << 32) - 1
|
|
|
|
zip_file.close()
|
|
|
|
zipfile.ZIP64_LIMIT = saved_zip64_limit
|
|
|
|
|
|
class DeviceSpecificParams(object):
|
|
module = None
|
|
def __init__(self, **kwargs):
|
|
"""Keyword arguments to the constructor become attributes of this
|
|
object, which is passed to all functions in the device-specific
|
|
module."""
|
|
for k, v in kwargs.iteritems():
|
|
setattr(self, k, v)
|
|
self.extras = OPTIONS.extras
|
|
|
|
if self.module is None:
|
|
path = OPTIONS.device_specific
|
|
if not path:
|
|
return
|
|
try:
|
|
if os.path.isdir(path):
|
|
info = imp.find_module("releasetools", [path])
|
|
else:
|
|
d, f = os.path.split(path)
|
|
b, x = os.path.splitext(f)
|
|
if x == ".py":
|
|
f = b
|
|
info = imp.find_module(f, [d])
|
|
print("loaded device-specific extensions from", path)
|
|
self.module = imp.load_module("device_specific", *info)
|
|
except ImportError:
|
|
print("unable to load device-specific module; assuming none")
|
|
|
|
def _DoCall(self, function_name, *args, **kwargs):
|
|
"""Call the named function in the device-specific module, passing
|
|
the given args and kwargs. The first argument to the call will be
|
|
the DeviceSpecific object itself. If there is no module, or the
|
|
module does not define the function, return the value of the
|
|
'default' kwarg (which itself defaults to None)."""
|
|
if self.module is None or not hasattr(self.module, function_name):
|
|
return kwargs.get("default")
|
|
return getattr(self.module, function_name)(*((self,) + args), **kwargs)
|
|
|
|
def FullOTA_Assertions(self):
|
|
"""Called after emitting the block of assertions at the top of a
|
|
full OTA package. Implementations can add whatever additional
|
|
assertions they like."""
|
|
return self._DoCall("FullOTA_Assertions")
|
|
|
|
def FullOTA_InstallBegin(self):
|
|
"""Called at the start of full OTA installation."""
|
|
return self._DoCall("FullOTA_InstallBegin")
|
|
|
|
def FullOTA_InstallEnd(self):
|
|
"""Called at the end of full OTA installation; typically this is
|
|
used to install the image for the device's baseband processor."""
|
|
return self._DoCall("FullOTA_InstallEnd")
|
|
|
|
def IncrementalOTA_Assertions(self):
|
|
"""Called after emitting the block of assertions at the top of an
|
|
incremental OTA package. Implementations can add whatever
|
|
additional assertions they like."""
|
|
return self._DoCall("IncrementalOTA_Assertions")
|
|
|
|
def IncrementalOTA_VerifyBegin(self):
|
|
"""Called at the start of the verification phase of incremental
|
|
OTA installation; additional checks can be placed here to abort
|
|
the script before any changes are made."""
|
|
return self._DoCall("IncrementalOTA_VerifyBegin")
|
|
|
|
def IncrementalOTA_VerifyEnd(self):
|
|
"""Called at the end of the verification phase of incremental OTA
|
|
installation; additional checks can be placed here to abort the
|
|
script before any changes are made."""
|
|
return self._DoCall("IncrementalOTA_VerifyEnd")
|
|
|
|
def IncrementalOTA_InstallBegin(self):
|
|
"""Called at the start of incremental OTA installation (after
|
|
verification is complete)."""
|
|
return self._DoCall("IncrementalOTA_InstallBegin")
|
|
|
|
def IncrementalOTA_InstallEnd(self):
|
|
"""Called at the end of incremental OTA installation; typically
|
|
this is used to install the image for the device's baseband
|
|
processor."""
|
|
return self._DoCall("IncrementalOTA_InstallEnd")
|
|
|
|
def VerifyOTA_Assertions(self):
|
|
return self._DoCall("VerifyOTA_Assertions")
|
|
|
|
|
|
class File(object):
|
|
def __init__(self, name, data, compress_size=None):
|
|
self.name = name
|
|
self.data = data
|
|
self.size = len(data)
|
|
self.compress_size = compress_size or self.size
|
|
self.sha1 = sha1(data).hexdigest()
|
|
|
|
@classmethod
|
|
def FromLocalFile(cls, name, diskname):
|
|
f = open(diskname, "rb")
|
|
data = f.read()
|
|
f.close()
|
|
return File(name, data)
|
|
|
|
def WriteToTemp(self):
|
|
t = tempfile.NamedTemporaryFile()
|
|
t.write(self.data)
|
|
t.flush()
|
|
return t
|
|
|
|
def WriteToDir(self, d):
|
|
with open(os.path.join(d, self.name), "wb") as fp:
|
|
fp.write(self.data)
|
|
|
|
def AddToZip(self, z, compression=None):
|
|
ZipWriteStr(z, self.name, self.data, compress_type=compression)
|
|
|
|
|
|
DIFF_PROGRAM_BY_EXT = {
|
|
".gz" : "imgdiff",
|
|
".zip" : ["imgdiff", "-z"],
|
|
".jar" : ["imgdiff", "-z"],
|
|
".apk" : ["imgdiff", "-z"],
|
|
".img" : "imgdiff",
|
|
}
|
|
|
|
|
|
class Difference(object):
|
|
def __init__(self, tf, sf, diff_program=None):
|
|
self.tf = tf
|
|
self.sf = sf
|
|
self.patch = None
|
|
self.diff_program = diff_program
|
|
|
|
def ComputePatch(self):
|
|
"""Compute the patch (as a string of data) needed to turn sf into
|
|
tf. Returns the same tuple as GetPatch()."""
|
|
|
|
tf = self.tf
|
|
sf = self.sf
|
|
|
|
if self.diff_program:
|
|
diff_program = self.diff_program
|
|
else:
|
|
ext = os.path.splitext(tf.name)[1]
|
|
diff_program = DIFF_PROGRAM_BY_EXT.get(ext, "bsdiff")
|
|
|
|
ttemp = tf.WriteToTemp()
|
|
stemp = sf.WriteToTemp()
|
|
|
|
ext = os.path.splitext(tf.name)[1]
|
|
|
|
try:
|
|
ptemp = tempfile.NamedTemporaryFile()
|
|
if isinstance(diff_program, list):
|
|
cmd = copy.copy(diff_program)
|
|
else:
|
|
cmd = [diff_program]
|
|
cmd.append(stemp.name)
|
|
cmd.append(ttemp.name)
|
|
cmd.append(ptemp.name)
|
|
p = Run(cmd, stdout=subprocess.PIPE, stderr=subprocess.PIPE)
|
|
err = []
|
|
def run():
|
|
_, e = p.communicate()
|
|
if e:
|
|
err.append(e)
|
|
th = threading.Thread(target=run)
|
|
th.start()
|
|
th.join(timeout=300) # 5 mins
|
|
if th.is_alive():
|
|
print("WARNING: diff command timed out")
|
|
p.terminate()
|
|
th.join(5)
|
|
if th.is_alive():
|
|
p.kill()
|
|
th.join()
|
|
|
|
if p.returncode != 0:
|
|
print("WARNING: failure running %s:\n%s\n" % (
|
|
diff_program, "".join(err)))
|
|
self.patch = None
|
|
return None, None, None
|
|
diff = ptemp.read()
|
|
finally:
|
|
ptemp.close()
|
|
stemp.close()
|
|
ttemp.close()
|
|
|
|
self.patch = diff
|
|
return self.tf, self.sf, self.patch
|
|
|
|
|
|
def GetPatch(self):
|
|
"""Returns a tuple of (target_file, source_file, patch_data).
|
|
|
|
patch_data may be None if ComputePatch hasn't been called, or if
|
|
computing the patch failed.
|
|
"""
|
|
return self.tf, self.sf, self.patch
|
|
|
|
|
|
def ComputeDifferences(diffs):
|
|
"""Call ComputePatch on all the Difference objects in 'diffs'."""
|
|
print(len(diffs), "diffs to compute")
|
|
|
|
# Do the largest files first, to try and reduce the long-pole effect.
|
|
by_size = [(i.tf.size, i) for i in diffs]
|
|
by_size.sort(reverse=True)
|
|
by_size = [i[1] for i in by_size]
|
|
|
|
lock = threading.Lock()
|
|
diff_iter = iter(by_size) # accessed under lock
|
|
|
|
def worker():
|
|
try:
|
|
lock.acquire()
|
|
for d in diff_iter:
|
|
lock.release()
|
|
start = time.time()
|
|
d.ComputePatch()
|
|
dur = time.time() - start
|
|
lock.acquire()
|
|
|
|
tf, sf, patch = d.GetPatch()
|
|
if sf.name == tf.name:
|
|
name = tf.name
|
|
else:
|
|
name = "%s (%s)" % (tf.name, sf.name)
|
|
if patch is None:
|
|
print(
|
|
"patching failed! %s" % (name,))
|
|
else:
|
|
print("%8.2f sec %8d / %8d bytes (%6.2f%%) %s" % (
|
|
dur, len(patch), tf.size, 100.0 * len(patch) / tf.size, name))
|
|
lock.release()
|
|
except Exception as e:
|
|
print(e)
|
|
raise
|
|
|
|
# start worker threads; wait for them all to finish.
|
|
threads = [threading.Thread(target=worker)
|
|
for i in range(OPTIONS.worker_threads)]
|
|
for th in threads:
|
|
th.start()
|
|
while threads:
|
|
threads.pop().join()
|
|
|
|
|
|
class BlockDifference(object):
|
|
def __init__(self, partition, tgt, src=None, check_first_block=False,
|
|
version=None, disable_imgdiff=False):
|
|
self.tgt = tgt
|
|
self.src = src
|
|
self.partition = partition
|
|
self.check_first_block = check_first_block
|
|
self.disable_imgdiff = disable_imgdiff
|
|
|
|
if version is None:
|
|
version = max(
|
|
int(i) for i in
|
|
OPTIONS.info_dict.get("blockimgdiff_versions", "1").split(","))
|
|
assert version >= 3
|
|
self.version = version
|
|
|
|
b = blockimgdiff.BlockImageDiff(tgt, src, threads=OPTIONS.worker_threads,
|
|
version=self.version,
|
|
disable_imgdiff=self.disable_imgdiff)
|
|
self.path = os.path.join(MakeTempDir(), partition)
|
|
b.Compute(self.path)
|
|
self._required_cache = b.max_stashed_size
|
|
self.touched_src_ranges = b.touched_src_ranges
|
|
self.touched_src_sha1 = b.touched_src_sha1
|
|
|
|
if src is None:
|
|
_, self.device = GetTypeAndDevice("/" + partition, OPTIONS.info_dict)
|
|
else:
|
|
_, self.device = GetTypeAndDevice("/" + partition,
|
|
OPTIONS.source_info_dict)
|
|
|
|
@property
|
|
def required_cache(self):
|
|
return self._required_cache
|
|
|
|
def WriteScript(self, script, output_zip, progress=None,
|
|
write_verify_script=False):
|
|
if not self.src:
|
|
# write the output unconditionally
|
|
script.Print("Patching %s image unconditionally..." % (self.partition,))
|
|
else:
|
|
script.Print("Patching %s image after verification." % (self.partition,))
|
|
|
|
if progress:
|
|
script.ShowProgress(progress, 0)
|
|
self._WriteUpdate(script, output_zip)
|
|
|
|
if write_verify_script:
|
|
self._WritePostInstallVerifyScript(script)
|
|
|
|
def WriteStrictVerifyScript(self, script):
|
|
"""Verify all the blocks in the care_map, including clobbered blocks.
|
|
|
|
This differs from the WriteVerifyScript() function: a) it prints different
|
|
error messages; b) it doesn't allow half-way updated images to pass the
|
|
verification."""
|
|
|
|
partition = self.partition
|
|
script.Print("Verifying %s..." % (partition,))
|
|
ranges = self.tgt.care_map
|
|
ranges_str = ranges.to_string_raw()
|
|
script.AppendExtra(
|
|
'range_sha1("%s", "%s") == "%s" && ui_print(" Verified.") || '
|
|
'ui_print("\\"%s\\" has unexpected contents.");' % (
|
|
self.device, ranges_str,
|
|
self.tgt.TotalSha1(include_clobbered_blocks=True),
|
|
self.device))
|
|
script.AppendExtra("")
|
|
|
|
def WriteVerifyScript(self, script, touched_blocks_only=False):
|
|
partition = self.partition
|
|
|
|
# full OTA
|
|
if not self.src:
|
|
script.Print("Image %s will be patched unconditionally." % (partition,))
|
|
|
|
# incremental OTA
|
|
else:
|
|
if touched_blocks_only:
|
|
ranges = self.touched_src_ranges
|
|
expected_sha1 = self.touched_src_sha1
|
|
else:
|
|
ranges = self.src.care_map.subtract(self.src.clobbered_blocks)
|
|
expected_sha1 = self.src.TotalSha1()
|
|
|
|
# No blocks to be checked, skipping.
|
|
if not ranges:
|
|
return
|
|
|
|
ranges_str = ranges.to_string_raw()
|
|
script.AppendExtra(
|
|
'if (range_sha1("%s", "%s") == "%s" || block_image_verify("%s", '
|
|
'package_extract_file("%s.transfer.list"), "%s.new.dat", '
|
|
'"%s.patch.dat")) then' % (
|
|
self.device, ranges_str, expected_sha1,
|
|
self.device, partition, partition, partition))
|
|
script.Print('Verified %s image...' % (partition,))
|
|
script.AppendExtra('else')
|
|
|
|
if self.version >= 4:
|
|
|
|
# Bug: 21124327
|
|
# When generating incrementals for the system and vendor partitions in
|
|
# version 4 or newer, explicitly check the first block (which contains
|
|
# the superblock) of the partition to see if it's what we expect. If
|
|
# this check fails, give an explicit log message about the partition
|
|
# having been remounted R/W (the most likely explanation).
|
|
if self.check_first_block:
|
|
script.AppendExtra('check_first_block("%s");' % (self.device,))
|
|
|
|
# If version >= 4, try block recovery before abort update
|
|
if partition == "system":
|
|
code = ErrorCode.SYSTEM_RECOVER_FAILURE
|
|
else:
|
|
code = ErrorCode.VENDOR_RECOVER_FAILURE
|
|
script.AppendExtra((
|
|
'ifelse (block_image_recover("{device}", "{ranges}") && '
|
|
'block_image_verify("{device}", '
|
|
'package_extract_file("{partition}.transfer.list"), '
|
|
'"{partition}.new.dat", "{partition}.patch.dat"), '
|
|
'ui_print("{partition} recovered successfully."), '
|
|
'abort("E{code}: {partition} partition fails to recover"));\n'
|
|
'endif;').format(device=self.device, ranges=ranges_str,
|
|
partition=partition, code=code))
|
|
|
|
# Abort the OTA update. Note that the incremental OTA cannot be applied
|
|
# even if it may match the checksum of the target partition.
|
|
# a) If version < 3, operations like move and erase will make changes
|
|
# unconditionally and damage the partition.
|
|
# b) If version >= 3, it won't even reach here.
|
|
else:
|
|
if partition == "system":
|
|
code = ErrorCode.SYSTEM_VERIFICATION_FAILURE
|
|
else:
|
|
code = ErrorCode.VENDOR_VERIFICATION_FAILURE
|
|
script.AppendExtra((
|
|
'abort("E%d: %s partition has unexpected contents");\n'
|
|
'endif;') % (code, partition))
|
|
|
|
def _WritePostInstallVerifyScript(self, script):
|
|
partition = self.partition
|
|
script.Print('Verifying the updated %s image...' % (partition,))
|
|
# Unlike pre-install verification, clobbered_blocks should not be ignored.
|
|
ranges = self.tgt.care_map
|
|
ranges_str = ranges.to_string_raw()
|
|
script.AppendExtra(
|
|
'if range_sha1("%s", "%s") == "%s" then' % (
|
|
self.device, ranges_str,
|
|
self.tgt.TotalSha1(include_clobbered_blocks=True)))
|
|
|
|
# Bug: 20881595
|
|
# Verify that extended blocks are really zeroed out.
|
|
if self.tgt.extended:
|
|
ranges_str = self.tgt.extended.to_string_raw()
|
|
script.AppendExtra(
|
|
'if range_sha1("%s", "%s") == "%s" then' % (
|
|
self.device, ranges_str,
|
|
self._HashZeroBlocks(self.tgt.extended.size())))
|
|
script.Print('Verified the updated %s image.' % (partition,))
|
|
if partition == "system":
|
|
code = ErrorCode.SYSTEM_NONZERO_CONTENTS
|
|
else:
|
|
code = ErrorCode.VENDOR_NONZERO_CONTENTS
|
|
script.AppendExtra(
|
|
'else\n'
|
|
' abort("E%d: %s partition has unexpected non-zero contents after '
|
|
'OTA update");\n'
|
|
'endif;' % (code, partition))
|
|
else:
|
|
script.Print('Verified the updated %s image.' % (partition,))
|
|
|
|
if partition == "system":
|
|
code = ErrorCode.SYSTEM_UNEXPECTED_CONTENTS
|
|
else:
|
|
code = ErrorCode.VENDOR_UNEXPECTED_CONTENTS
|
|
|
|
script.AppendExtra(
|
|
'else\n'
|
|
' abort("E%d: %s partition has unexpected contents after OTA '
|
|
'update");\n'
|
|
'endif;' % (code, partition))
|
|
|
|
def _WriteUpdate(self, script, output_zip):
|
|
ZipWrite(output_zip,
|
|
'{}.transfer.list'.format(self.path),
|
|
'{}.transfer.list'.format(self.partition))
|
|
|
|
# For full OTA, compress the new.dat with brotli with quality 6 to reduce
|
|
# its size. Quailty 9 almost triples the compression time but doesn't
|
|
# further reduce the size too much. For a typical 1.8G system.new.dat
|
|
# zip | brotli(quality 6) | brotli(quality 9)
|
|
# compressed_size: 942M | 869M (~8% reduced) | 854M
|
|
# compression_time: 75s | 265s | 719s
|
|
# decompression_time: 15s | 25s | 25s
|
|
|
|
if not self.src:
|
|
brotli_cmd = ['brotli', '--quality=6',
|
|
'--output={}.new.dat.br'.format(self.path),
|
|
'{}.new.dat'.format(self.path)]
|
|
print("Compressing {}.new.dat with brotli".format(self.partition))
|
|
p = Run(brotli_cmd, stdout=subprocess.PIPE, stderr=subprocess.STDOUT)
|
|
stdoutdata, _ = p.communicate()
|
|
assert p.returncode == 0, \
|
|
'Failed to compress {}.new.dat with brotli:\n{}'.format(
|
|
self.partition, stdoutdata)
|
|
|
|
new_data_name = '{}.new.dat.br'.format(self.partition)
|
|
ZipWrite(output_zip,
|
|
'{}.new.dat.br'.format(self.path),
|
|
new_data_name,
|
|
compress_type=zipfile.ZIP_STORED)
|
|
else:
|
|
new_data_name = '{}.new.dat'.format(self.partition)
|
|
ZipWrite(output_zip, '{}.new.dat'.format(self.path), new_data_name)
|
|
|
|
ZipWrite(output_zip,
|
|
'{}.patch.dat'.format(self.path),
|
|
'{}.patch.dat'.format(self.partition),
|
|
compress_type=zipfile.ZIP_STORED)
|
|
|
|
if self.partition == "system":
|
|
code = ErrorCode.SYSTEM_UPDATE_FAILURE
|
|
else:
|
|
code = ErrorCode.VENDOR_UPDATE_FAILURE
|
|
|
|
call = ('block_image_update("{device}", '
|
|
'package_extract_file("{partition}.transfer.list"), '
|
|
'"{new_data_name}", "{partition}.patch.dat") ||\n'
|
|
' abort("E{code}: Failed to update {partition} image.");'.format(
|
|
device=self.device, partition=self.partition,
|
|
new_data_name=new_data_name, code=code))
|
|
script.AppendExtra(script.WordWrap(call))
|
|
|
|
def _HashBlocks(self, source, ranges): # pylint: disable=no-self-use
|
|
data = source.ReadRangeSet(ranges)
|
|
ctx = sha1()
|
|
|
|
for p in data:
|
|
ctx.update(p)
|
|
|
|
return ctx.hexdigest()
|
|
|
|
def _HashZeroBlocks(self, num_blocks): # pylint: disable=no-self-use
|
|
"""Return the hash value for all zero blocks."""
|
|
zero_block = '\x00' * 4096
|
|
ctx = sha1()
|
|
for _ in range(num_blocks):
|
|
ctx.update(zero_block)
|
|
|
|
return ctx.hexdigest()
|
|
|
|
|
|
DataImage = blockimgdiff.DataImage
|
|
|
|
|
|
# map recovery.fstab's fs_types to mount/format "partition types"
|
|
PARTITION_TYPES = {
|
|
"ext4": "EMMC",
|
|
"emmc": "EMMC",
|
|
"f2fs": "EMMC",
|
|
"squashfs": "EMMC"
|
|
}
|
|
|
|
|
|
def GetTypeAndDevice(mount_point, info):
|
|
fstab = info["fstab"]
|
|
if fstab:
|
|
return (PARTITION_TYPES[fstab[mount_point].fs_type],
|
|
fstab[mount_point].device)
|
|
else:
|
|
raise KeyError
|
|
|
|
|
|
def ParseCertificate(data):
|
|
"""Parses and converts a PEM-encoded certificate into DER-encoded.
|
|
|
|
This gives the same result as `openssl x509 -in <filename> -outform DER`.
|
|
|
|
Returns:
|
|
The decoded certificate string.
|
|
"""
|
|
cert_buffer = []
|
|
save = False
|
|
for line in data.split("\n"):
|
|
if "--END CERTIFICATE--" in line:
|
|
break
|
|
if save:
|
|
cert_buffer.append(line)
|
|
if "--BEGIN CERTIFICATE--" in line:
|
|
save = True
|
|
cert = "".join(cert_buffer).decode('base64')
|
|
return cert
|
|
|
|
|
|
def ExtractPublicKey(cert):
|
|
"""Extracts the public key (PEM-encoded) from the given certificate file.
|
|
|
|
Args:
|
|
cert: The certificate filename.
|
|
|
|
Returns:
|
|
The public key string.
|
|
|
|
Raises:
|
|
AssertionError: On non-zero return from 'openssl'.
|
|
"""
|
|
# The behavior with '-out' is different between openssl 1.1 and openssl 1.0.
|
|
# While openssl 1.1 writes the key into the given filename followed by '-out',
|
|
# openssl 1.0 (both of 1.0.1 and 1.0.2) doesn't. So we collect the output from
|
|
# stdout instead.
|
|
cmd = ['openssl', 'x509', '-pubkey', '-noout', '-in', cert]
|
|
proc = Run(cmd, stdout=subprocess.PIPE, stderr=subprocess.PIPE)
|
|
pubkey, stderrdata = proc.communicate()
|
|
assert proc.returncode == 0, \
|
|
'Failed to dump public key from certificate: %s\n%s' % (cert, stderrdata)
|
|
return pubkey
|
|
|
|
|
|
def MakeRecoveryPatch(input_dir, output_sink, recovery_img, boot_img,
|
|
info_dict=None):
|
|
"""Generates the recovery-from-boot patch and writes the script to output.
|
|
|
|
Most of the space in the boot and recovery images is just the kernel, which is
|
|
identical for the two, so the resulting patch should be efficient. Add it to
|
|
the output zip, along with a shell script that is run from init.rc on first
|
|
boot to actually do the patching and install the new recovery image.
|
|
|
|
Args:
|
|
input_dir: The top-level input directory of the target-files.zip.
|
|
output_sink: The callback function that writes the result.
|
|
recovery_img: File object for the recovery image.
|
|
boot_img: File objects for the boot image.
|
|
info_dict: A dict returned by common.LoadInfoDict() on the input
|
|
target_files. Will use OPTIONS.info_dict if None has been given.
|
|
"""
|
|
if info_dict is None:
|
|
info_dict = OPTIONS.info_dict
|
|
|
|
full_recovery_image = info_dict.get("full_recovery_image") == "true"
|
|
|
|
if full_recovery_image:
|
|
output_sink("etc/recovery.img", recovery_img.data)
|
|
|
|
else:
|
|
system_root_image = info_dict.get("system_root_image") == "true"
|
|
path = os.path.join(input_dir, "SYSTEM", "etc", "recovery-resource.dat")
|
|
# With system-root-image, boot and recovery images will have mismatching
|
|
# entries (only recovery has the ramdisk entry) (Bug: 72731506). Use bsdiff
|
|
# to handle such a case.
|
|
if system_root_image:
|
|
diff_program = ["bsdiff"]
|
|
bonus_args = ""
|
|
assert not os.path.exists(path)
|
|
else:
|
|
diff_program = ["imgdiff"]
|
|
if os.path.exists(path):
|
|
diff_program.append("-b")
|
|
diff_program.append(path)
|
|
bonus_args = "--bonus /system/etc/recovery-resource.dat"
|
|
else:
|
|
bonus_args = ""
|
|
|
|
d = Difference(recovery_img, boot_img, diff_program=diff_program)
|
|
_, _, patch = d.ComputePatch()
|
|
output_sink("recovery-from-boot.p", patch)
|
|
|
|
try:
|
|
# The following GetTypeAndDevice()s need to use the path in the target
|
|
# info_dict instead of source_info_dict.
|
|
boot_type, boot_device = GetTypeAndDevice("/boot", info_dict)
|
|
recovery_type, recovery_device = GetTypeAndDevice("/recovery", info_dict)
|
|
except KeyError:
|
|
return
|
|
|
|
if full_recovery_image:
|
|
sh = """#!/system/bin/sh
|
|
if ! applypatch --check %(type)s:%(device)s:%(size)d:%(sha1)s; then
|
|
applypatch \\
|
|
--flash /system/etc/recovery.img \\
|
|
--target %(type)s:%(device)s:%(size)d:%(sha1)s && \\
|
|
log -t recovery "Installing new recovery image: succeeded" || \\
|
|
log -t recovery "Installing new recovery image: failed"
|
|
else
|
|
log -t recovery "Recovery image already installed"
|
|
fi
|
|
""" % {'type': recovery_type,
|
|
'device': recovery_device,
|
|
'sha1': recovery_img.sha1,
|
|
'size': recovery_img.size}
|
|
else:
|
|
sh = """#!/system/bin/sh
|
|
if ! applypatch --check %(recovery_type)s:%(recovery_device)s:%(recovery_size)d:%(recovery_sha1)s; then
|
|
applypatch %(bonus_args)s \\
|
|
--patch /system/recovery-from-boot.p \\
|
|
--source %(boot_type)s:%(boot_device)s:%(boot_size)d:%(boot_sha1)s \\
|
|
--target %(recovery_type)s:%(recovery_device)s:%(recovery_size)d:%(recovery_sha1)s && \\
|
|
log -t recovery "Installing new recovery image: succeeded" || \\
|
|
log -t recovery "Installing new recovery image: failed"
|
|
else
|
|
log -t recovery "Recovery image already installed"
|
|
fi
|
|
""" % {'boot_size': boot_img.size,
|
|
'boot_sha1': boot_img.sha1,
|
|
'recovery_size': recovery_img.size,
|
|
'recovery_sha1': recovery_img.sha1,
|
|
'boot_type': boot_type,
|
|
'boot_device': boot_device,
|
|
'recovery_type': recovery_type,
|
|
'recovery_device': recovery_device,
|
|
'bonus_args': bonus_args}
|
|
|
|
# The install script location moved from /system/etc to /system/bin
|
|
# in the L release.
|
|
sh_location = "bin/install-recovery.sh"
|
|
|
|
print("putting script in", sh_location)
|
|
|
|
output_sink(sh_location, sh)
|