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utils.py
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utils.py
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from __future__ import print_function
import errno
import os
import struct
import subprocess
import sys
import tempfile
import zipfile
from os.path import exists
from random import randint, choice
from shutil import move, rmtree
from threading import Thread
import zstandard
from Crypto.Cipher import AES
from Crypto.Util.Padding import pad
import blockimgdiff
import sparse_img
from os import getcwd
import platform as plat
import update_metadata_pb2 as um
from lpunpack import SparseImage
def u64(x):
return struct.unpack(">Q", x)[0]
DataImage = blockimgdiff.DataImage
# -----
# ====================================================
# FUNCTION: sdat2img img2sdat
# AUTHORS: xpirt - luxi78 - howellzhu
# DATE: 2018-10-27 10:33:21 CEST | 2018-05-25 12:19:12 CEST
# ====================================================
# -----
# ----VALUES
try:
sys.set_int_max_str_digits(0)
except AttributeError:
pass
elocal = getcwd()
platform = plat.machine()
ostype = plat.system()
binner = elocal + os.sep + "bin"
ebinner = binner + os.sep + ostype + os.sep + platform + os.sep
def call(exe, kz='Y', out=0, shstate=False, sp=0):
cmd = f'{ebinner}{exe}' if kz == "Y" else exe
if os.name != 'posix':
conf = subprocess.CREATE_NO_WINDOW
else:
if sp == 0:
cmd = cmd.split()
conf = 0
try:
ret = subprocess.Popen(cmd, shell=shstate, stdin=subprocess.PIPE, stdout=subprocess.PIPE,
stderr=subprocess.STDOUT, creationflags=conf)
for i in iter(ret.stdout.readline, b""):
if out == 0:
print(i.decode("utf-8", "ignore").strip())
except subprocess.CalledProcessError as e:
ret = None
ret.wait = print
ret.returncode = 1
for i in iter(e.stdout.readline, b""):
if out == 0:
print(i.decode("utf-8", "ignore").strip())
ret.wait()
return ret.returncode
dn = None
formats = ([b'PK', "zip"], [b'OPPOENCRYPT!', "ozip"], [b'7z', "7z"], [b'\x53\xef', 'ext', 1080],
[b'\x10\x20\xF5\xF2', 'f2fs', 1024],
[b'\x3a\xff\x26\xed', "sparse"], [b'\xe2\xe1\xf5\xe0', "erofs", 1024], [b"CrAU", "payload"],
[b"AVB0", "vbmeta"], [b'\xd7\xb7\xab\x1e', "dtbo"],
[b'\xd0\x0d\xfe\xed', "dtb"], [b"MZ", "exe"], [b".ELF", 'elf'],
[b"ANDROID!", "boot"], [b"VNDRBOOT", "vendor_boot"],
[b'AVBf', "avb_foot"], [b'BZh', "bzip2"],
[b'CHROMEOS', 'chrome'], [b'\x1f\x8b', "gzip"],
[b'\x1f\x9e', "gzip"], [b'\x02\x21\x4c\x18', "lz4_legacy"],
[b'\x03\x21\x4c\x18', 'lz4'], [b'\x04\x22\x4d\x18', 'lz4'],
[b'\x1f\x8b\x08\x00\x00\x00\x00\x00\x02\x03', "zopfli"], [b'\xfd7zXZ', 'xz'],
[b']\x00\x00\x00\x04\xff\xff\xff\xff\xff\xff\xff\xff', 'lzma'], [b'\x02!L\x18', 'lz4_lg'],
[b'\x89PNG', 'png'], [b"LOGO!!!!", 'logo'], [b'\x28\xb5\x2f\xfd', 'zstd'])
# ----DEFS
def payload_reader(payloadfile):
if payloadfile.read(4) != b'CrAU':
print(f"Magic Check Fail\n")
payloadfile.close()
return
file_format_version = u64(payloadfile.read(8))
assert file_format_version == 2
manifest_size = u64(payloadfile.read(8))
metadata_signature_size = struct.unpack('>I', payloadfile.read(4))[0] if file_format_version > 1 else 0
manifest = payloadfile.read(manifest_size)
payloadfile.read(metadata_signature_size)
dam = um.DeltaArchiveManifest()
dam.ParseFromString(manifest)
return dam
class aesencrypt:
@staticmethod
def encrypt(key, file_path, outfile):
cipher = AES.new(key.encode("utf-8"), AES.MODE_ECB)
with open(outfile, "wb") as f, open(file_path, 'rb') as fd:
f.write(cipher.encrypt(pad(fd.read(), AES.block_size)))
@staticmethod
def decrypt(key, file_path, outfile):
cipher = AES.new(key.encode("utf-8"), AES.MODE_ECB)
with open(file_path, "rb") as f:
data = cipher.decrypt(f.read())
data = data[:-data[-1]]
with open(outfile, "wb") as f:
f.write(data)
class dbkxyt:
def __init__(self, work, code, extra):
if not work:
print('文件夹不存在')
return
if os.path.exists((dir_ := work) + "firmware-update"):
os.rename(dir_ + "firmware-update", dir_ + "images")
if not os.path.exists(dir_ + "images"):
os.makedirs(dir_ + 'images')
if os.path.exists(dir_ + 'META-INF'):
rmtree(dir_ + 'META-INF')
zipfile.ZipFile(extra).extractall(dir_)
right_device = code
with open(dir_ + "bin" + os.sep + "right_device", 'w', encoding='gbk') as rd:
rd.write(right_device + "\n")
with open(
dir_ + 'META-INF' + os.sep + "com" + os.sep + "google" + os.sep + "android" + os.sep + "update-binary",
'r+', encoding='utf-8', newline='\n') as script:
lines = script.readlines()
lines.insert(45, f'right_device="{right_device}"\n')
add_line = self.get_line_num(lines, '#Other images')
for t in os.listdir(dir_ + "images"):
if t.endswith('.img') and not os.path.isdir(dir_ + t):
print("Add Flash method {} to update-binary".format(t))
if os.path.getsize(os.path.join(dir_ + 'images', t)) > 209715200:
self.zstd_compress(os.path.join(dir_ + 'images', t))
lines.insert(add_line,
'package_extract_zstd "images/{}.zst" "/dev/block/by-name/{}"\n'.format(t, t[:-4]))
else:
lines.insert(add_line,
'package_extract_file "images/{}" "/dev/block/by-name/{}"\n'.format(t, t[:-4]))
for t in os.listdir(dir_):
if not t.startswith("preloader_") and not os.path.isdir(dir_ + t) and t.endswith('.img'):
print("Add Flash method {} to update-binary".format(t))
if os.path.getsize(dir_ + t) > 209715200:
self.zstd_compress(dir_ + t)
move(os.path.join(dir_, t + ".zst"), os.path.join(dir_ + "images", t + ".zst"))
lines.insert(add_line,
'package_extract_zstd "images/{}.zst" "/dev/block/by-name/{}"\n'.format(t, t[:-4]))
else:
lines.insert(add_line,
'package_extract_file "images/{}" "/dev/block/by-name/{}"\n'.format(t, t[:-4]))
move(os.path.join(dir_, t), os.path.join(dir_ + "images", t))
script.seek(0)
script.truncate()
script.writelines(lines)
def zstd_compress(self, path):
if os.path.exists(path):
if gettype(path) == "sparse":
print(f"[INFO] {os.path.basename(path)} is (sparse), converting to (raw)")
simg2img(path)
try:
print(f"[Compress] {os.path.basename(path)}...")
call("zstd -5 --rm {} -o {}".format(path, path + ".zst"))
except Exception as e:
print(f"[Fail] Compress {os.path.basename(path)} Fail:{e}")
@staticmethod
def get_line_num(data, text):
for i, t_ in enumerate(data):
if text in t_:
return i
class sdat2img:
def __init__(self, TRANSFER_LIST_FILE, NEW_DATA_FILE, OUTPUT_IMAGE_FILE):
print('sdat2img binary - version: 1.3\n')
self.TRANSFER_LIST_FILE = TRANSFER_LIST_FILE
self.NEW_DATA_FILE = NEW_DATA_FILE
self.OUTPUT_IMAGE_FILE = OUTPUT_IMAGE_FILE
self.list_file = self.parse_transfer_list_file()
block_size = 4096
version = next(self.list_file)
self.version = str(version)
next(self.list_file)
show = "Android {} detected!\n"
if version == 1:
print(show.format("Lollipop 5.0"))
elif version == 2:
print(show.format("Lollipop 5.1"))
elif version == 3:
print(show.format("Marshmallow 6.x"))
elif version == 4:
print(show.format("Nougat 7.x / Oreo 8.x / Pie 9.x"))
else:
print(show.format('Unknown Android version {version}!\n'))
# Don't clobber existing files to avoid accidental data loss
try:
output_img = open(self.OUTPUT_IMAGE_FILE, 'wb')
except IOError as e:
if e.errno == errno.EEXIST:
print('Error: the output file "{}" already exists'.format(e.filename))
print('Remove it, rename it, or choose a different file name.')
return
else:
raise
new_data_file = open(self.NEW_DATA_FILE, 'rb')
max_file_size = 0
for command in self.list_file:
max_file_size = max(pair[1] for pair in [i for i in command[1]]) * block_size
if command[0] == 'new':
for block in command[1]:
begin = block[0]
block_count = block[1] - begin
print('\rCopying {} blocks into position {}...'.format(block_count, begin), end="")
# Position output file
output_img.seek(begin * block_size)
# Copy one block at a time
while block_count > 0:
output_img.write(new_data_file.read(block_size))
block_count -= 1
else:
print('\rSkipping command {}...'.format(command[0]), end="")
# Make file larger if necessary
if output_img.tell() < max_file_size:
output_img.truncate(max_file_size)
output_img.close()
new_data_file.close()
print('\nDone! Output image: {}'.format(os.path.realpath(output_img.name)))
@staticmethod
def rangeset(src):
src_set = src.split(',')
num_set = [int(item) for item in src_set]
if len(num_set) != num_set[0] + 1:
print('Error on parsing following data to rangeset:\n{}'.format(src))
return
return tuple([(num_set[i], num_set[i + 1]) for i in range(1, len(num_set), 2)])
def parse_transfer_list_file(self):
with open(self.TRANSFER_LIST_FILE, 'r') as trans_list:
# First line in transfer list is the version number
# Second line in transfer list is the total number of blocks we expect to write
if (version := int(trans_list.readline())) >= 2 and (new_blocks := int(trans_list.readline())):
# Third line is how many stash entries are needed simultaneously
trans_list.readline()
# Fourth line is the maximum number of blocks that will be stashed simultaneously
trans_list.readline()
# Subsequent lines are all individual transfer commands
yield version
yield new_blocks
for line in trans_list:
line = line.split(' ')
cmd = line[0]
if cmd in ['erase', 'new', 'zero']:
yield [cmd, self.rangeset(line[1])]
else:
# Skip lines starting with numbers, they are not commands anyway
if not cmd[0].isdigit():
print('Command "{}" is not valid.'.format(cmd))
return
def gettype(file) -> str:
if not os.path.exists(file):
return "fne"
def compare(header: bytes, number: int = 0) -> int:
with open(file, 'rb') as f:
f.seek(number)
return f.read(len(header)) == header
def is_super(fil) -> any:
with open(fil, 'rb') as file_:
buf = bytearray(file_.read(4))
if len(buf) < 4:
return False
file_.seek(0, 0)
while buf[0] == 0x00:
buf = bytearray(file_.read(1))
try:
file_.seek(-1, 1)
except:
return False
buf += bytearray(file_.read(4))
return buf[1:] == b'\x67\x44\x6c\x61'
def is_super2(fil) -> any:
with open(fil, 'rb') as file_:
try:
file_.seek(4096, 0)
except:
return False
buf = bytearray(file_.read(4))
return buf == b'\x67\x44\x6c\x61'
try:
if is_super(file) or is_super2(file):
return 'super'
except IndexError:
pass
for f_ in formats:
if len(f_) == 2:
if compare(f_[0]):
return f_[1]
elif len(f_) == 3:
if compare(f_[0], f_[2]):
return f_[1]
return "unknow"
def dynamic_list_reader(path):
data = {}
with open(path, 'r', encoding='utf-8') as l_f:
for p in l_f.readlines():
if p[:1] == '#':
continue
tmp = p.strip().split()
if tmp[0] == 'remove_all_groups':
data.clear()
elif tmp[0] == 'add_group':
data[tmp[1]] = {}
data[tmp[1]]['size'] = tmp[2]
data[tmp[1]]['parts'] = []
elif tmp[0] == 'add':
data[tmp[2]]['parts'].append(tmp[1])
else:
print(f"Skip {tmp}")
return data
def generate_dynamic_list(dbfz, size, set_, lb, work):
data = ['# Remove all existing dynamic partitions and groups before applying full OTA', 'remove_all_groups']
with open(work + "dynamic_partitions_op_list", 'w', encoding='utf-8', newline='\n') as d_list:
if set_ == 1:
data.append(f'# Add group {dbfz} with maximum size {size}')
data.append(f'add_group {dbfz} {size}')
elif set_ in [2, 3]:
data.append(f'# Add group {dbfz}_a with maximum size {size}')
data.append(f'add_group {dbfz}_a {size}')
data.append(f'# Add group {dbfz}_b with maximum size {size}')
data.append(f'add_group {dbfz}_b {size}')
for part in lb:
if set_ == 1:
data.append(f'# Add partition {part} to group {dbfz}')
data.append(f'add {part} {dbfz}')
elif set_ in [2, 3]:
data.append(f'# Add partition {part}_a to group {dbfz}_a')
data.append(f'add {part}_a {dbfz}_a')
data.append(f'# Add partition {part}_b to group {dbfz}_b')
data.append(f'add {part}_b {dbfz}_b')
for part in lb:
if set_ == 1:
data.append(f'# Grow partition {part} from 0 to {os.path.getsize(work + part + ".img")}')
data.append(f'resize {part} {os.path.getsize(work + part + ".img")}')
elif set_ in [2, 3]:
data.append(f'# Grow partition {part}_a from 0 to {os.path.getsize(work + part + ".img")}')
data.append(f'resize {part}_a {os.path.getsize(work + part + ".img")}')
d_list.writelines([key + "\n" for key in data])
data.clear()
def v_code(num=6) -> str:
ret = ""
for i in range(num):
num = randint(0, 9)
# num = chr(random.randint(48,57))#ASCII表示数字
letter = chr(randint(97, 122)) # 取小写字母
Letter = chr(randint(65, 90)) # 取大写字母
s = str(choice([num, letter, Letter]))
ret += s
return ret
def qc(file_) -> None:
if not exists(file_):
return
with open(file_, 'r+', encoding='utf-8', newline='\n') as f:
data = f.readlines()
new_data = sorted(set(data), key=data.index)
if len(new_data) == len(data):
print("No need to handle")
return
f.seek(0)
f.truncate()
f.writelines(new_data)
del data, new_data
def cz(func, *args):
Thread(target=func, args=args, daemon=True).start()
def simg2img(path):
with open(path, 'rb') as fd:
if SparseImage(fd).check():
print('Sparse image detected.')
print('Process conversion to non sparse image...')
unsparse_file = SparseImage(fd).unsparse()
print('Result:[ok]')
else:
print(f"{path} not Sparse.Skip!")
try:
if os.path.exists(unsparse_file):
os.remove(path)
os.rename(unsparse_file, path)
except Exception as e:
print(e)
def img2sdat(input_image, out_dir='.', version=None, prefix='system'):
print('img2sdat binary - version: %s\n' % 1.7)
if not os.path.isdir(out_dir):
os.makedirs(out_dir)
'''
1. Android Lollipop 5.0
2. Android Lollipop 5.1
3. Android Marshmallow 6.0
4. Android Nougat 7.0/7.1/8.0/8.1
'''
blockimgdiff.BlockImageDiff(sparse_img.SparseImage(input_image, tempfile.mkstemp()[1], '0'), None, version).Compute(
out_dir + '/' + prefix)
def findfile(file, dir_) -> str:
for root, dirs, files in os.walk(dir_, topdown=True):
if file in files:
if os.name == 'nt':
return (root + os.sep + file).replace("\\", '/')
else:
return root + os.sep + file
else:
pass
def findfolder(dir__, folder_name):
for root, dirnames, filenames in os.walk(dir__):
for dirname in dirnames:
if dirname == folder_name:
return os.path.join(root, dirname).replace("\\", '/')
return None
# ----CLASSES
class vbpatch:
def __init__(self, file_):
self.file = file_
def checkmagic(self):
if os.access(self.file, os.F_OK):
magic = b'AVB0'
with open(self.file, "rb") as f:
buf = f.read(4)
return magic == buf
else:
print("File dose not exist!")
def readflag(self):
if not self.checkmagic():
return False
if os.access(self.file, os.F_OK):
with open(self.file, "rb") as f:
f.seek(123, 0)
flag = f.read(1)
if flag == b'\x00':
return 0 # Verify boot and dm-verity is on
elif flag == b'\x01':
return 1 # Verify boot but dm-verity is off
elif flag == b'\x02':
return 2 # All verity is off
else:
return flag
else:
print("File does not exist!")
def patchvb(self, flag):
if not self.checkmagic():
return False
if os.access(self.file, os.F_OK):
with open(self.file, 'rb+') as f:
f.seek(123, 0)
f.write(flag)
print("Done!")
else:
print("File not Found")
def restore(self):
self.patchvb(b'\x00')
def disdm(self):
self.patchvb(b'\x01')
def disavb(self):
self.patchvb(b'\x02')
class DUMPCFG:
blksz = 0x1 << 0xc
headoff = 0x4000
magic = b"LOGO!!!!"
imgnum = 0
imgblkoffs = []
imgblkszs = []
class BMPHEAD(object):
def __init__(self, buf: bytes = None): # Read bytes buf and use this struct to parse
assert buf is not None, f"buf Should be bytes not {type(buf)}"
# print(buf)
self.structstr = "<H6I"
(
self.magic,
self.fsize,
self.reserved,
self.hsize,
self.dib,
self.width,
self.height,
) = struct.unpack(self.structstr, buf)
class XIAOMI_BLKSTRUCT(object):
def __init__(self, buf: bytes):
self.structstr = "2I"
(
self.imgoff,
self.blksz,
) = struct.unpack(self.structstr, buf)
class LOGODUMPER(object):
def __init__(self, img: str, out: str, dir__: str = "pic"):
self.out = out
self.img = img
self.dir = dir__
self.structstr = "<8s"
self.cfg = DUMPCFG()
self.chkimg(img)
def chkimg(self, img: str):
assert os.access(img, os.F_OK), f"{img} does not found!"
with open(img, 'rb') as f:
f.seek(self.cfg.headoff, 0)
self.magic = struct.unpack(
self.structstr, f.read(struct.calcsize(self.structstr))
)[0]
while True:
m = XIAOMI_BLKSTRUCT(f.read(8))
if m.imgoff != 0:
self.cfg.imgblkszs.append(m.blksz << 0xc)
self.cfg.imgblkoffs.append(m.imgoff << 0xc)
self.cfg.imgnum += 1
else:
break
# print(self.magic)
assert self.magic == b"LOGO!!!!", "File does not match xiaomi logo magic!"
print("Xiaomi LOGO!!!! format check pass!")
def unpack(self):
with open(self.img, 'rb') as f:
print("Unpack:\n"
"BMP\tSize\tWidth\tHeight")
for i in range(self.cfg.imgnum):
f.seek(self.cfg.imgblkoffs[i], 0)
bmph = BMPHEAD(f.read(26))
f.seek(self.cfg.imgblkoffs[i], 0)
print("%d\t%d\t%d\t%d" % (i, bmph.fsize, bmph.width, bmph.height))
with open(os.path.join(self.out, "%d.bmp" % i), 'wb') as o:
o.write(f.read(bmph.fsize))
print("\tDone!")
def repack(self):
with open(self.out, 'wb') as o:
off = 0x5
for i in range(self.cfg.imgnum):
print("Write BMP [%d.bmp] at offset 0x%X" % (i, off << 0xc))
with open(os.path.join(self.dir, "%d.bmp" % i), 'rb') as b:
bhead = BMPHEAD(b.read(26))
b.seek(0, 0)
self.cfg.imgblkszs[i] = (bhead.fsize >> 0xc) + 1
self.cfg.imgblkoffs[i] = off
o.seek(off << 0xc)
o.write(b.read(bhead.fsize))
off += self.cfg.imgblkszs[i]
o.seek(self.cfg.headoff)
o.write(self.magic)
for i in range(self.cfg.imgnum):
o.write(struct.pack("<I", self.cfg.imgblkoffs[i]))
o.write(struct.pack("<I", self.cfg.imgblkszs[i]))
print("\tDone!")