mirror of
https://github.com/noDRM/DeDRM_tools.git
synced 2024-11-16 19:06:09 +06:00
92 lines
2.7 KiB
Python
92 lines
2.7 KiB
Python
#!/usr/bin/env python3
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# -*- coding: utf-8 -*-
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# Mobipocket PID calculator v0.4 for Amazon Kindle.
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# Copyright (c) 2007, 2009 Igor Skochinsky <skochinsky@mail.ru>
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# History:
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# 0.1 Initial release
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# 0.2 Added support for generating PID for iPhone (thanks to mbp)
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# 0.3 changed to autoflush stdout, fixed return code usage
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# 0.3 updated for unicode
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# 0.4 Added support for serial numbers starting with '9', fixed unicode bugs.
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# 0.5 moved unicode_argv call inside main for Windows DeDRM compatibility
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# 1.0 Python 3 for calibre 5.0
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import sys
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import binascii
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from utilities import SafeUnbuffered
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from argv_utils import unicode_argv
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letters = 'ABCDEFGHIJKLMNPQRSTUVWXYZ123456789'
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def crc32(s):
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return (~binascii.crc32(s,-1))&0xFFFFFFFF
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def checksumPid(s):
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crc = crc32(s.encode('ascii'))
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crc = crc ^ (crc >> 16)
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res = s
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l = len(letters)
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for i in (0,1):
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b = crc & 0xff
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pos = (b // l) ^ (b % l)
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res += bytes(bytearray([letters[pos%l]]))
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crc >>= 8
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return res
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def pidFromSerial(s, l):
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crc = crc32(s)
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arr1 = [0]*l
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for i in range(len(s)):
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if sys.version_info[0] == 2:
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arr1[i%l] ^= ord(s[i])
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else:
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arr1[i%l] ^= s[i]
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crc_bytes = [crc >> 24 & 0xff, crc >> 16 & 0xff, crc >> 8 & 0xff, crc & 0xff]
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for i in range(l):
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arr1[i] ^= crc_bytes[i&3]
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pid = b""
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for i in range(l):
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b = arr1[i] & 0xff
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pid+=bytes(bytearray([letters[(b >> 7) + ((b >> 5 & 3) ^ (b & 0x1f))]]))
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return pid
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def cli_main():
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print("Mobipocket PID calculator for Amazon Kindle. Copyright © 2007, 2009 Igor Skochinsky")
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argv=unicode_argv("kindlepid.py")
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if len(argv)==2:
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serial = argv[1]
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else:
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print("Usage: kindlepid.py <Kindle Serial Number>/<iPhone/iPod Touch UDID>")
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return 1
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if len(serial)==16:
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if serial.startswith("B") or serial.startswith("9"):
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print("Kindle serial number detected")
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else:
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print("Warning: unrecognized serial number. Please recheck input.")
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return 1
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pid = pidFromSerial(serial.encode("utf-8"),7)+'*'
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print("Mobipocket PID for Kindle serial#{0} is {1}".format(serial,checksumPid(pid)))
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return 0
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elif len(serial)==40:
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print("iPhone serial number (UDID) detected")
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pid = pidFromSerial(serial.encode("utf-8"),8)
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print("Mobipocket PID for iPhone serial#{0} is {1}".format(serial,checksumPid(pid)))
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return 0
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print("Warning: unrecognized serial number. Please recheck input.")
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return 1
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if __name__ == "__main__":
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sys.stdout=SafeUnbuffered(sys.stdout)
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sys.stderr=SafeUnbuffered(sys.stderr)
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sys.exit(cli_main())
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