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#!/usr/bin/env python
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# -*- coding: utf-8 -*-
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from __future__ import with_statement
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# kindleforios4key.py
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# Copyright © 2013 by Apprentice Alf
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# Portions Copyright © 2007, 2009 Igor Skochinsky <skochinsky@mail.ru>
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# Revision history:
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# 1.0 - Generates fixed PID for Kindle for iOS 3.1.1 running on iOS 4.x
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"""
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Generate fixed PID for Kindle for iOS 3.1.1
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"""
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__license__ = 'GPL v3'
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__version__ = '1.0'
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import sys, os
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import getopt
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import binascii
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# Wrap a stream so that output gets flushed immediately
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# and also make sure that any unicode strings get
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# encoded using "replace" before writing them.
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class SafeUnbuffered:
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def __init__(self, stream):
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self.stream = stream
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self.encoding = stream.encoding
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if self.encoding == None:
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self.encoding = "utf-8"
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def write(self, data):
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if isinstance(data,unicode):
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data = data.encode(self.encoding,"replace")
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self.stream.write(data)
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self.stream.flush()
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def __getattr__(self, attr):
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return getattr(self.stream, attr)
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iswindows = sys.platform.startswith('win')
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isosx = sys.platform.startswith('darwin')
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def unicode_argv():
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if iswindows:
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# Uses shell32.GetCommandLineArgvW to get sys.argv as a list of Unicode
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# strings.
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# Versions 2.x of Python don't support Unicode in sys.argv on
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# Windows, with the underlying Windows API instead replacing multi-byte
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# characters with '?'.
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from ctypes import POINTER, byref, cdll, c_int, windll
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from ctypes.wintypes import LPCWSTR, LPWSTR
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GetCommandLineW = cdll.kernel32.GetCommandLineW
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GetCommandLineW.argtypes = []
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GetCommandLineW.restype = LPCWSTR
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CommandLineToArgvW = windll.shell32.CommandLineToArgvW
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CommandLineToArgvW.argtypes = [LPCWSTR, POINTER(c_int)]
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CommandLineToArgvW.restype = POINTER(LPWSTR)
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cmd = GetCommandLineW()
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argc = c_int(0)
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argv = CommandLineToArgvW(cmd, byref(argc))
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if argc.value > 0:
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# Remove Python executable and commands if present
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start = argc.value - len(sys.argv)
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return [argv[i] for i in
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xrange(start, argc.value)]
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# if we don't have any arguments at all, just pass back script name
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# this should never happen
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return [u"mobidedrm.py"]
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else:
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argvencoding = sys.stdin.encoding
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if argvencoding == None:
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argvencoding = "utf-8"
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return [arg if (type(arg) == unicode) else unicode(arg,argvencoding) for arg in sys.argv]
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import hashlib
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def SHA256(message):
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ctx = hashlib.sha256()
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ctx.update(message)
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return ctx.digest()
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def crc32(s):
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return (~binascii.crc32(s,-1))&0xFFFFFFFF
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letters = 'ABCDEFGHIJKLMNPQRSTUVWXYZ123456789'
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def checksumPid(s):
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crc = crc32(s)
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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 += 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 xrange(len(s)):
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arr1[i%l] ^= ord(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 xrange(l):
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arr1[i] ^= crc_bytes[i&3]
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pid = ''
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for i in xrange(l):
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b = arr1[i] & 0xff
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pid+=letters[(b >> 7) + ((b >> 5 & 3) ^ (b & 0x1f))]
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return pid
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def generatekeys(email, mac):
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keys = []
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email = email.encode('utf-8').lower()
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mac = mac.encode('utf-8').lower()
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cleanmac = "".join(c if (c in "0123456789abcdef") else "" for c in mac)
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lowermac = cleanmac.lower()
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#print lowermac
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keyseed = lowermac + email.encode('utf-8')
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#print keyseed
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keysha256 = SHA256(keyseed)
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keybase64 = keysha256.encode('base64')
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#print keybase64
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cleankeybase64 = "".join(c if (c in "0123456789abcdefghijklmnopqrstuvwxyzABCDEFGHIJKLMNOPQRSTUVWXYZ") else "0" for c in keybase64)
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#print cleankeybase64
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pseudoudid = cleankeybase64[:40]
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#print pseudoudid
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keys.append(pidFromSerial(pseudoudid.encode("utf-8"),8))
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return keys
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# interface for Python DeDRM
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# returns single key or multiple keys, depending on path or file passed in
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def getkey(email, mac, outpath):
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keys = generatekeys(email,mac)
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if len(keys) > 0:
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if not os.path.isdir(outpath):
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outfile = outpath
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with file(outfile, 'w') as keyfileout:
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keyfileout.write(keys[0])
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print u"Saved a key to {0}".format(outfile)
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else:
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keycount = 0
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for key in keys:
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while True:
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keycount += 1
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outfile = os.path.join(outpath,u"kindleios{0:d}.pid".format(keycount))
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if not os.path.exists(outfile):
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break
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with file(outfile, 'w') as keyfileout:
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keyfileout.write(key)
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print u"Saved a key to {0}".format(outfile)
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return True
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return False
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def usage(progname):
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print u"Generates the key for Kindle for iOS 3.1.1"
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print u"Requires email address of Amazon acccount"
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print u"And MAC address for iOS device’s wifi"
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print u"Outputs to a file or to stdout"
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print u"Usage:"
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print u" {0:s} [-h] <email address> <MAC address> [<outfile>]".format(progname)
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def cli_main():
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sys.stdout=SafeUnbuffered(sys.stdout)
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sys.stderr=SafeUnbuffered(sys.stderr)
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argv=unicode_argv()
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progname = os.path.basename(argv[0])
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print u"{0} v{1}\nCopyright © 2013 Apprentice Alf".format(progname,__version__)
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try:
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opts, args = getopt.getopt(argv[1:], "h")
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except getopt.GetoptError, err:
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print u"Error in options or arguments: {0}".format(err.args[0])
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usage(progname)
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sys.exit(2)
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for o, a in opts:
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if o == "-h":
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usage(progname)
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sys.exit(0)
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if len(args) < 2 or len(args) > 3:
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usage(progname)
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sys.exit(2)
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if len(args) == 3:
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# save to the specified file or folder
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getkey(args[0],args[1],args[2])
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else:
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keys = generatekeys(args[0],args[1])
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for key in keys:
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print key
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return 0
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def gui_main():
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try:
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import Tkinter
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import Tkconstants
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import tkMessageBox
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except:
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print "Tkinter not installed"
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return cli_main()
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class DecryptionDialog(Tkinter.Frame):
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def __init__(self, root):
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Tkinter.Frame.__init__(self, root, border=5)
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self.status = Tkinter.Label(self, text=u"Enter parameters")
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self.status.pack(fill=Tkconstants.X, expand=1)
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body = Tkinter.Frame(self)
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body.pack(fill=Tkconstants.X, expand=1)
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sticky = Tkconstants.E + Tkconstants.W
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body.grid_columnconfigure(1, weight=2)
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Tkinter.Label(body, text=u"Amazon email address").grid(row=0)
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self.email = Tkinter.Entry(body, width=40)
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self.email.grid(row=0, column=1, sticky=sticky)
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Tkinter.Label(body, text=u"iOS MAC address").grid(row=1)
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self.mac = Tkinter.Entry(body, width=40)
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self.mac.grid(row=1, column=1, sticky=sticky)
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buttons = Tkinter.Frame(self)
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buttons.pack()
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button = Tkinter.Button(
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buttons, text=u"Generate", width=10, command=self.generate)
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button.pack(side=Tkconstants.LEFT)
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Tkinter.Frame(buttons, width=10).pack(side=Tkconstants.LEFT)
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button = Tkinter.Button(
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buttons, text=u"Quit", width=10, command=self.quit)
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button.pack(side=Tkconstants.RIGHT)
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def generate(self):
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email = self.email.get()
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mac = self.mac.get()
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if not email:
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self.status['text'] = u"Email not specified"
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return
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if not mac:
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self.status['text'] = u"MAC not specified"
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return
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self.status['text'] = u"Generating..."
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try:
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keys = generatekeys(email, mac)
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except Exception, e:
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self.status['text'] = u"Error: (0}".format(e.args[0])
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return
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self.status['text'] = ", ".join(key for key in keys)
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root = Tkinter.Tk()
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root.title(u"Kindle for iOS PID Generator v.{0}".format(__version__))
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root.resizable(True, False)
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root.minsize(300, 0)
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DecryptionDialog(root).pack(fill=Tkconstants.X, expand=1)
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root.mainloop()
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return 0
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if __name__ == '__main__':
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if len(sys.argv) > 1:
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sys.exit(cli_main())
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sys.exit(gui_main())
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