338 lines
12 KiB
Python
338 lines
12 KiB
Python
#!/usr/bin/env python3
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# -*- coding: utf-8 -*-
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# k4mobidedrm.py
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# Copyright © 2008-2020 by Apprentice Harper et al.
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__license__ = 'GPL v3'
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__version__ = '6.0'
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# Engine to remove drm from Kindle and Mobipocket ebooks
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# for personal use for archiving and converting your ebooks
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# PLEASE DO NOT PIRATE EBOOKS!
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# We want all authors and publishers, and ebook stores to live
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# long and prosperous lives but at the same time we just want to
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# be able to read OUR books on whatever device we want and to keep
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# readable for a long, long time
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# This borrows very heavily from works by CMBDTC, IHeartCabbages, skindle,
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# unswindle, DarkReverser, ApprenticeAlf, and many many others
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# Special thanks to The Dark Reverser for MobiDeDrm and CMBDTC for cmbdtc_dump
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# from which this script borrows most unashamedly.
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# Changelog
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# 1.0 - Name change to k4mobidedrm. Adds Mac support, Adds plugin code
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# 1.1 - Adds support for additional kindle.info files
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# 1.2 - Better error handling for older Mobipocket
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# 1.3 - Don't try to decrypt Topaz books
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# 1.7 - Add support for Topaz books and Kindle serial numbers. Split code.
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# 1.9 - Tidy up after Topaz, minor exception changes
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# 2.1 - Topaz fix and filename sanitizing
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# 2.2 - Topaz Fix and minor Mac code fix
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# 2.3 - More Topaz fixes
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# 2.4 - K4PC/Mac key generation fix
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# 2.6 - Better handling of non-K4PC/Mac ebooks
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# 2.7 - Better trailing bytes handling in mobidedrm
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# 2.8 - Moved parsing of kindle.info files to mac & pc util files.
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# 3.1 - Updated for new calibre interface. Now __init__ in plugin.
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# 3.5 - Now support Kindle for PC/Mac 1.6
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# 3.6 - Even better trailing bytes handling in mobidedrm
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# 3.7 - Add support for Amazon Print Replica ebooks.
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# 3.8 - Improved Topaz support
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# 4.1 - Improved Topaz support and faster decryption with alfcrypto
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# 4.2 - Added support for Amazon's KF8 format ebooks
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# 4.4 - Linux calls to Wine added, and improved configuration dialog
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# 4.5 - Linux works again without Wine. Some Mac key file search changes
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# 4.6 - First attempt to handle unicode properly
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# 4.7 - Added timing reports, and changed search for Mac key files
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# 4.8 - Much better unicode handling, matching the updated inept and ignoble scripts
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# - Moved back into plugin, __init__ in plugin now only contains plugin code.
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# 4.9 - Missed some invalid characters in cleanup_name
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# 5.0 - Extraction of info from Kindle for PC/Mac moved into kindlekey.py
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# - tweaked GetDecryptedBook interface to leave passed parameters unchanged
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# 5.1 - moved unicode_argv call inside main for Windows DeDRM compatibility
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# 5.2 - Fixed error in command line processing of unicode arguments
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# 5.3 - Changed Android support to allow passing of backup .ab files
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# 5.4 - Recognise KFX files masquerading as azw, even if we can't decrypt them yet.
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# 5.5 - Added GPL v3 licence explicitly.
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# 5.6 - Invoke KFXZipBook to handle zipped KFX files
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# 5.7 - Revamp cleanup_name
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# 6.0 - Added Python 3 compatibility for calibre 5.0
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import sys, os, re
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import csv
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import getopt
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import re
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import traceback
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import time
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try:
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import html.entities as htmlentitydefs
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except:
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import htmlentitydefs
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import json
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#@@CALIBRE_COMPAT_CODE@@
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class DrmException(Exception):
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pass
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import mobidedrm
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import topazextract
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import kgenpids
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import androidkindlekey
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import kfxdedrm
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from utilities import SafeUnbuffered
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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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range(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 ["mobidedrm.py"]
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else:
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argvencoding = sys.stdin.encoding or "utf-8"
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return [arg if (isinstance(arg, str) or isinstance(arg,unicode)) else str(arg, argvencoding) for arg in sys.argv]
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# cleanup unicode filenames
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# borrowed from calibre from calibre/src/calibre/__init__.py
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# added in removal of control (<32) chars
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# and removal of . at start and end
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# and with some (heavily edited) code from Paul Durrant's kindlenamer.py
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# and some improvements suggested by jhaisley
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def cleanup_name(name):
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# substitute filename unfriendly characters
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name = name.replace("<","[").replace(">","]").replace(" : "," – ").replace(": "," – ").replace(":","—").replace("/","_").replace("\\","_").replace("|","_").replace("\"","\'").replace("*","_").replace("?","")
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# white space to single space, delete leading and trailing while space
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name = re.sub(r"\s", " ", name).strip()
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# delete control characters
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name = "".join(char for char in name if ord(char)>=32)
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# delete non-ascii characters
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name = "".join(char for char in name if ord(char)<=126)
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# remove leading dots
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while len(name)>0 and name[0] == ".":
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name = name[1:]
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# remove trailing dots (Windows doesn't like them)
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while name.endswith("."):
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name = name[:-1]
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if len(name)==0:
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name="DecryptedBook"
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return name
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# must be passed unicode
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def unescape(text):
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def fixup(m):
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text = m.group(0)
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if text[:2] == "&#":
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# character reference
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try:
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if text[:3] == "&#x":
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return chr(int(text[3:-1], 16))
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else:
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return chr(int(text[2:-1]))
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except ValueError:
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pass
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else:
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# named entity
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try:
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text = chr(htmlentitydefs.name2codepoint[text[1:-1]])
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except KeyError:
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pass
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return text # leave as is
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return re.sub("&#?\\w+;", fixup, text)
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def GetDecryptedBook(infile, kDatabases, androidFiles, serials, pids, starttime = time.time()):
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# handle the obvious cases at the beginning
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if not os.path.isfile(infile):
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raise DrmException("Input file does not exist.")
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mobi = True
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magic8 = open(infile,'rb').read(8)
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if magic8 == b'\xeaDRMION\xee':
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raise DrmException("The .kfx DRMION file cannot be decrypted by itself. A .kfx-zip archive containing a DRM voucher is required.")
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magic3 = magic8[:3]
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if magic3 == b'TPZ':
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mobi = False
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if magic8[:4] == b'PK\x03\x04':
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mb = kfxdedrm.KFXZipBook(infile)
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elif mobi:
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mb = mobidedrm.MobiBook(infile)
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else:
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mb = topazextract.TopazBook(infile)
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try:
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bookname = unescape(mb.getBookTitle())
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print("Decrypting {1} ebook: {0}".format(bookname, mb.getBookType()))
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except:
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print("Decrypting {0} ebook.".format(mb.getBookType()))
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# copy list of pids
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totalpids = list(pids)
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# extend list of serials with serials from android databases
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for aFile in androidFiles:
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serials.extend(androidkindlekey.get_serials(aFile))
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# extend PID list with book-specific PIDs from seriala and kDatabases
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md1, md2 = mb.getPIDMetaInfo()
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totalpids.extend(kgenpids.getPidList(md1, md2, serials, kDatabases))
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# remove any duplicates
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totalpids = list(set(totalpids))
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print("Found {1:d} keys to try after {0:.1f} seconds".format(time.time()-starttime, len(totalpids)))
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#print totalpids
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try:
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mb.processBook(totalpids)
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except:
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mb.cleanup()
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raise
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print("Decryption succeeded after {0:.1f} seconds".format(time.time()-starttime))
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return mb
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# kDatabaseFiles is a list of files created by kindlekey
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def decryptBook(infile, outdir, kDatabaseFiles, androidFiles, serials, pids):
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starttime = time.time()
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kDatabases = []
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for dbfile in kDatabaseFiles:
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kindleDatabase = {}
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try:
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with open(dbfile, 'r') as keyfilein:
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kindleDatabase = json.loads(keyfilein.read())
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kDatabases.append([dbfile,kindleDatabase])
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except Exception as e:
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print("Error getting database from file {0:s}: {1:s}".format(dbfile,e))
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traceback.print_exc()
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try:
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book = GetDecryptedBook(infile, kDatabases, androidFiles, serials, pids, starttime)
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except Exception as e:
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print("Error decrypting book after {1:.1f} seconds: {0}".format(e.args[0],time.time()-starttime))
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traceback.print_exc()
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return 1
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# Try to infer a reasonable name
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orig_fn_root = os.path.splitext(os.path.basename(infile))[0]
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if (
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re.match('^B[A-Z0-9]{9}(_EBOK|_EBSP|_sample)?$', orig_fn_root) or
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re.match('^[0-9A-F-]{36}$', orig_fn_root)
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): # Kindle for PC / Mac / Android / Fire / iOS
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clean_title = cleanup_name(book.getBookTitle())
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outfilename = "{}_{}".format(orig_fn_root, clean_title)
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else: # E Ink Kindle, which already uses a reasonable name
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outfilename = orig_fn_root
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# avoid excessively long file names
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if len(outfilename)>150:
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outfilename = outfilename[:99]+"--"+outfilename[-49:]
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outfilename = outfilename+"_nodrm"
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outfile = os.path.join(outdir, outfilename + book.getBookExtension())
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book.getFile(outfile)
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print("Saved decrypted book {1:s} after {0:.1f} seconds".format(time.time()-starttime, outfilename))
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if book.getBookType()=="Topaz":
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zipname = os.path.join(outdir, outfilename + "_SVG.zip")
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book.getSVGZip(zipname)
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print("Saved SVG ZIP Archive for {1:s} after {0:.1f} seconds".format(time.time()-starttime, outfilename))
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# remove internal temporary directory of Topaz pieces
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book.cleanup()
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return 0
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def usage(progname):
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print("Removes DRM protection from Mobipocket, Amazon KF8, Amazon Print Replica and Amazon Topaz ebooks")
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print("Usage:")
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print(" {0} [-k <kindle.k4i>] [-p <comma separated PIDs>] [-s <comma separated Kindle serial numbers>] [ -a <AmazonSecureStorage.xml|backup.ab> ] <infile> <outdir>".format(progname))
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#
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# Main
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#
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def cli_main():
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argv=unicode_argv()
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progname = os.path.basename(argv[0])
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print("K4MobiDeDrm v{0}.\nCopyright © 2008-2020 Apprentice Harper et al.".format(__version__))
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try:
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opts, args = getopt.getopt(argv[1:], "k:p:s:a:h")
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except getopt.GetoptError as err:
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print("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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if len(args)<2:
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usage(progname)
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sys.exit(2)
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infile = args[0]
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outdir = args[1]
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kDatabaseFiles = []
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androidFiles = []
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serials = []
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pids = []
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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 o == "-k":
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if a == None :
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raise DrmException("Invalid parameter for -k")
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kDatabaseFiles.append(a)
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if o == "-p":
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if a == None :
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raise DrmException("Invalid parameter for -p")
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pids = a.encode('utf-8').split(b',')
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if o == "-s":
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if a == None :
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raise DrmException("Invalid parameter for -s")
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serials = a.split(',')
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if o == '-a':
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if a == None:
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raise DrmException("Invalid parameter for -a")
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androidFiles.append(a)
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return decryptBook(infile, outdir, kDatabaseFiles, androidFiles, serials, pids)
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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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