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143 lines
4.5 KiB
143 lines
4.5 KiB
#!/usr/bin/env python
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# -*- coding: utf-8 -*-
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#====================================================
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# FILE: sdat2img.py
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# AUTHORS: xpirt - luxi78 - howellzhu
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# DATE: 2016-11-23 16:20:11 CST
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#====================================================
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import sys, os, errno
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__version__ = '1.0'
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if sys.hexversion < 0x02070000:
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print >> sys.stderr, "Python 2.7 or newer is required."
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try:
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input = raw_input
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except NameError: pass
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input('Press ENTER to exit...')
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sys.exit(1)
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else:
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print('sdat2img binary - version: %s\n' % __version__)
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try:
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TRANSFER_LIST_FILE = str(sys.argv[1])
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NEW_DATA_FILE = str(sys.argv[2])
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except IndexError:
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print('\nUsage: sdat2img.py <transfer_list> <system_new_file> [system_img]\n')
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print(' <transfer_list>: transfer list file')
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print(' <system_new_file>: system new dat file')
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print(' [system_img]: output system image\n\n')
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print('Visit xda thread for more information.\n')
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try:
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input = raw_input
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except NameError: pass
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input('Press ENTER to exit...')
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sys.exit()
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try:
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OUTPUT_IMAGE_FILE = str(sys.argv[3])
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except IndexError:
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OUTPUT_IMAGE_FILE = 'system.img'
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BLOCK_SIZE = 4096
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def rangeset(src):
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src_set = src.split(',')
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num_set = [int(item) for item in src_set]
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if len(num_set) != num_set[0]+1:
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print('Error on parsing following data to rangeset:\n%s' % src)
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sys.exit(1)
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return tuple ([ (num_set[i], num_set[i+1]) for i in range(1, len(num_set), 2) ])
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def parse_transfer_list_file(path):
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trans_list = open(TRANSFER_LIST_FILE, 'r')
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# First line in transfer list is the version number
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version = int(trans_list.readline())
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# Second line in transfer list is the total number of blocks we expect to write
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new_blocks = int(trans_list.readline())
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if version >= 2:
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# Third line is how many stash entries are needed simultaneously
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trans_list.readline()
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# Fourth line is the maximum number of blocks that will be stashed simultaneously
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trans_list.readline()
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# Subsequent lines are all individual transfer commands
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commands = []
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for line in trans_list:
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line = line.split(' ')
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cmd = line[0]
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if cmd in ['erase', 'new', 'zero']:
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commands.append([cmd, rangeset(line[1])])
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else:
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# Skip lines starting with numbers, they are not commands anyway
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if not cmd[0].isdigit():
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print('Command "%s" is not valid.' % cmd)
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trans_list.close()
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sys.exit(1)
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trans_list.close()
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return version, new_blocks, commands
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def main(argv):
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version, new_blocks, commands = parse_transfer_list_file(TRANSFER_LIST_FILE)
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if version == 1:
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print('Android Lollipop 5.0 detected!\n')
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elif version == 2:
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print('Android Lollipop 5.1 detected!\n')
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elif version == 3:
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print('Android Marshmallow 6.0 detected!\n')
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elif version == 4:
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print('Android Nougat 7.0 detected!\n')
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else:
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print('Unknown Android version!\n')
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# Don't clobber existing files to avoid accidental data loss
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try:
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output_img = open(OUTPUT_IMAGE_FILE, 'wb')
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except IOError as e:
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if e.errno == errno.EEXIST:
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print('Error: the output file "{}" already exists'.format(e.filename))
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print('Remove it, rename it, or choose a different file name.')
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sys.exit(e.errno)
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else:
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raise
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new_data_file = open(NEW_DATA_FILE, 'rb')
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all_block_sets = [i for command in commands for i in command[1]]
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max_file_size = max(pair[1] for pair in all_block_sets)*BLOCK_SIZE
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for command in commands:
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if command[0] == 'new':
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for block in command[1]:
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begin = block[0]
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end = block[1]
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block_count = end - begin
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print('Copying {} blocks into position {}...'.format(block_count, begin))
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# Position output file
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output_img.seek(begin*BLOCK_SIZE)
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# Copy one block at a time
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while(block_count > 0):
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output_img.write(new_data_file.read(BLOCK_SIZE))
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block_count -= 1
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else:
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print('Skipping command %s...' % command[0])
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# Make file larger if necessary
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if(output_img.tell() < max_file_size):
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output_img.truncate(max_file_size)
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output_img.close()
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new_data_file.close()
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print('Done! Output image: %s' % os.path.realpath(output_img.name))
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if __name__ == '__main__':
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main(sys.argv)
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