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