540 lines
18 KiB
Python
540 lines
18 KiB
Python
#!/usr/bin/env python
|
|
# -*- coding: utf-8 -*-
|
|
|
|
# topazextract.py
|
|
# Mostly written by some_updates based on code from many others
|
|
|
|
# Changelog
|
|
# 4.9 - moved unicode_argv call inside main for Windows DeDRM compatibility
|
|
# 5.0 - Fixed potential unicode problem with command line interface
|
|
|
|
from __future__ import print_function
|
|
__version__ = '5.0'
|
|
|
|
import sys
|
|
import os, csv, getopt
|
|
import zlib, zipfile, tempfile, shutil
|
|
import traceback
|
|
from struct import pack
|
|
from struct import unpack
|
|
from alfcrypto import Topaz_Cipher
|
|
|
|
class SafeUnbuffered:
|
|
def __init__(self, stream):
|
|
self.stream = stream
|
|
self.encoding = stream.encoding
|
|
if self.encoding == None:
|
|
self.encoding = "utf-8"
|
|
def write(self, data):
|
|
if isinstance(data,unicode):
|
|
data = data.encode(self.encoding,"replace")
|
|
self.stream.write(data)
|
|
self.stream.flush()
|
|
def __getattr__(self, attr):
|
|
return getattr(self.stream, attr)
|
|
|
|
iswindows = sys.platform.startswith('win')
|
|
isosx = sys.platform.startswith('darwin')
|
|
|
|
def unicode_argv():
|
|
if iswindows:
|
|
# Uses shell32.GetCommandLineArgvW to get sys.argv as a list of Unicode
|
|
# strings.
|
|
|
|
# Versions 2.x of Python don't support Unicode in sys.argv on
|
|
# Windows, with the underlying Windows API instead replacing multi-byte
|
|
# characters with '?'.
|
|
|
|
|
|
from ctypes import POINTER, byref, cdll, c_int, windll
|
|
from ctypes.wintypes import LPCWSTR, LPWSTR
|
|
|
|
GetCommandLineW = cdll.kernel32.GetCommandLineW
|
|
GetCommandLineW.argtypes = []
|
|
GetCommandLineW.restype = LPCWSTR
|
|
|
|
CommandLineToArgvW = windll.shell32.CommandLineToArgvW
|
|
CommandLineToArgvW.argtypes = [LPCWSTR, POINTER(c_int)]
|
|
CommandLineToArgvW.restype = POINTER(LPWSTR)
|
|
|
|
cmd = GetCommandLineW()
|
|
argc = c_int(0)
|
|
argv = CommandLineToArgvW(cmd, byref(argc))
|
|
if argc.value > 0:
|
|
# Remove Python executable and commands if present
|
|
start = argc.value - len(sys.argv)
|
|
return [argv[i] for i in
|
|
xrange(start, argc.value)]
|
|
# if we don't have any arguments at all, just pass back script name
|
|
# this should never happen
|
|
return [u"mobidedrm.py"]
|
|
else:
|
|
argvencoding = sys.stdin.encoding
|
|
if argvencoding == None:
|
|
argvencoding = 'utf-8'
|
|
return [arg if (type(arg) == unicode) else unicode(arg,argvencoding) for arg in sys.argv]
|
|
|
|
#global switch
|
|
debug = False
|
|
|
|
if 'calibre' in sys.modules:
|
|
inCalibre = True
|
|
from calibre_plugins.dedrm import kgenpids
|
|
else:
|
|
inCalibre = False
|
|
import kgenpids
|
|
|
|
|
|
class DrmException(Exception):
|
|
pass
|
|
|
|
|
|
# recursive zip creation support routine
|
|
def zipUpDir(myzip, tdir, localname):
|
|
currentdir = tdir
|
|
if localname != u"":
|
|
currentdir = os.path.join(currentdir,localname)
|
|
list = os.listdir(currentdir)
|
|
for file in list:
|
|
afilename = file
|
|
localfilePath = os.path.join(localname, afilename)
|
|
realfilePath = os.path.join(currentdir,file)
|
|
if os.path.isfile(realfilePath):
|
|
myzip.write(realfilePath, localfilePath)
|
|
elif os.path.isdir(realfilePath):
|
|
zipUpDir(myzip, tdir, localfilePath)
|
|
|
|
#
|
|
# Utility routines
|
|
#
|
|
|
|
# Get a 7 bit encoded number from file
|
|
def bookReadEncodedNumber(fo):
|
|
flag = False
|
|
data = ord(fo.read(1))
|
|
if data == 0xFF:
|
|
flag = True
|
|
data = ord(fo.read(1))
|
|
if data >= 0x80:
|
|
datax = (data & 0x7F)
|
|
while data >= 0x80 :
|
|
data = ord(fo.read(1))
|
|
datax = (datax <<7) + (data & 0x7F)
|
|
data = datax
|
|
if flag:
|
|
data = -data
|
|
return data
|
|
|
|
# Get a length prefixed string from file
|
|
def bookReadString(fo):
|
|
stringLength = bookReadEncodedNumber(fo)
|
|
return unpack(str(stringLength)+'s',fo.read(stringLength))[0]
|
|
|
|
#
|
|
# crypto routines
|
|
#
|
|
|
|
# Context initialisation for the Topaz Crypto
|
|
def topazCryptoInit(key):
|
|
return Topaz_Cipher().ctx_init(key)
|
|
|
|
# ctx1 = 0x0CAFFE19E
|
|
# for keyChar in key:
|
|
# keyByte = ord(keyChar)
|
|
# ctx2 = ctx1
|
|
# ctx1 = ((((ctx1 >>2) * (ctx1 >>7))&0xFFFFFFFF) ^ (keyByte * keyByte * 0x0F902007)& 0xFFFFFFFF )
|
|
# return [ctx1,ctx2]
|
|
|
|
# decrypt data with the context prepared by topazCryptoInit()
|
|
def topazCryptoDecrypt(data, ctx):
|
|
return Topaz_Cipher().decrypt(data, ctx)
|
|
# ctx1 = ctx[0]
|
|
# ctx2 = ctx[1]
|
|
# plainText = ""
|
|
# for dataChar in data:
|
|
# dataByte = ord(dataChar)
|
|
# m = (dataByte ^ ((ctx1 >> 3) &0xFF) ^ ((ctx2<<3) & 0xFF)) &0xFF
|
|
# ctx2 = ctx1
|
|
# ctx1 = (((ctx1 >> 2) * (ctx1 >> 7)) &0xFFFFFFFF) ^((m * m * 0x0F902007) &0xFFFFFFFF)
|
|
# plainText += chr(m)
|
|
# return plainText
|
|
|
|
# Decrypt data with the PID
|
|
def decryptRecord(data,PID):
|
|
ctx = topazCryptoInit(PID)
|
|
return topazCryptoDecrypt(data, ctx)
|
|
|
|
# Try to decrypt a dkey record (contains the bookPID)
|
|
def decryptDkeyRecord(data,PID):
|
|
record = decryptRecord(data,PID)
|
|
fields = unpack('3sB8sB8s3s',record)
|
|
if fields[0] != 'PID' or fields[5] != 'pid' :
|
|
raise DrmException(u"Didn't find PID magic numbers in record")
|
|
elif fields[1] != 8 or fields[3] != 8 :
|
|
raise DrmException(u"Record didn't contain correct length fields")
|
|
elif fields[2] != PID :
|
|
raise DrmException(u"Record didn't contain PID")
|
|
return fields[4]
|
|
|
|
# Decrypt all dkey records (contain the book PID)
|
|
def decryptDkeyRecords(data,PID):
|
|
nbKeyRecords = ord(data[0])
|
|
records = []
|
|
data = data[1:]
|
|
for i in range (0,nbKeyRecords):
|
|
length = ord(data[0])
|
|
try:
|
|
key = decryptDkeyRecord(data[1:length+1],PID)
|
|
records.append(key)
|
|
except DrmException:
|
|
pass
|
|
data = data[1+length:]
|
|
if len(records) == 0:
|
|
raise DrmException(u"BookKey Not Found")
|
|
return records
|
|
|
|
|
|
class TopazBook:
|
|
def __init__(self, filename):
|
|
self.fo = file(filename, 'rb')
|
|
self.outdir = tempfile.mkdtemp()
|
|
# self.outdir = 'rawdat'
|
|
self.bookPayloadOffset = 0
|
|
self.bookHeaderRecords = {}
|
|
self.bookMetadata = {}
|
|
self.bookKey = None
|
|
magic = unpack('4s',self.fo.read(4))[0]
|
|
if magic != 'TPZ0':
|
|
raise DrmException(u"Parse Error : Invalid Header, not a Topaz file")
|
|
self.parseTopazHeaders()
|
|
self.parseMetadata()
|
|
|
|
def parseTopazHeaders(self):
|
|
def bookReadHeaderRecordData():
|
|
# Read and return the data of one header record at the current book file position
|
|
# [[offset,decompressedLength,compressedLength],...]
|
|
nbValues = bookReadEncodedNumber(self.fo)
|
|
if debug: print("%d records in header " % nbValues, end=' ')
|
|
values = []
|
|
for i in range (0,nbValues):
|
|
values.append([bookReadEncodedNumber(self.fo),bookReadEncodedNumber(self.fo),bookReadEncodedNumber(self.fo)])
|
|
return values
|
|
def parseTopazHeaderRecord():
|
|
# Read and parse one header record at the current book file position and return the associated data
|
|
# [[offset,decompressedLength,compressedLength],...]
|
|
if ord(self.fo.read(1)) != 0x63:
|
|
raise DrmException(u"Parse Error : Invalid Header")
|
|
tag = bookReadString(self.fo)
|
|
record = bookReadHeaderRecordData()
|
|
return [tag,record]
|
|
nbRecords = bookReadEncodedNumber(self.fo)
|
|
if debug: print("Headers: %d" % nbRecords)
|
|
for i in range (0,nbRecords):
|
|
result = parseTopazHeaderRecord()
|
|
if debug: print(result[0], ": ", result[1])
|
|
self.bookHeaderRecords[result[0]] = result[1]
|
|
if ord(self.fo.read(1)) != 0x64 :
|
|
raise DrmException(u"Parse Error : Invalid Header")
|
|
self.bookPayloadOffset = self.fo.tell()
|
|
|
|
def parseMetadata(self):
|
|
# Parse the metadata record from the book payload and return a list of [key,values]
|
|
self.fo.seek(self.bookPayloadOffset + self.bookHeaderRecords['metadata'][0][0])
|
|
tag = bookReadString(self.fo)
|
|
if tag != 'metadata' :
|
|
raise DrmException(u"Parse Error : Record Names Don't Match")
|
|
flags = ord(self.fo.read(1))
|
|
nbRecords = ord(self.fo.read(1))
|
|
if debug: print("Metadata Records: %d" % nbRecords)
|
|
for i in range (0,nbRecords) :
|
|
keyval = bookReadString(self.fo)
|
|
content = bookReadString(self.fo)
|
|
if debug: print(keyval)
|
|
if debug: print(content)
|
|
self.bookMetadata[keyval] = content
|
|
return self.bookMetadata
|
|
|
|
def getPIDMetaInfo(self):
|
|
keysRecord = self.bookMetadata.get('keys','')
|
|
keysRecordRecord = ''
|
|
if keysRecord != '':
|
|
keylst = keysRecord.split(',')
|
|
for keyval in keylst:
|
|
keysRecordRecord += self.bookMetadata.get(keyval,'')
|
|
return keysRecord, keysRecordRecord
|
|
|
|
def getBookTitle(self):
|
|
title = ''
|
|
if 'Title' in self.bookMetadata:
|
|
title = self.bookMetadata['Title']
|
|
return title.decode('utf-8')
|
|
|
|
def setBookKey(self, key):
|
|
self.bookKey = key
|
|
|
|
def getBookPayloadRecord(self, name, index):
|
|
# Get a record in the book payload, given its name and index.
|
|
# decrypted and decompressed if necessary
|
|
encrypted = False
|
|
compressed = False
|
|
try:
|
|
recordOffset = self.bookHeaderRecords[name][index][0]
|
|
except:
|
|
raise DrmException("Parse Error : Invalid Record, record not found")
|
|
|
|
self.fo.seek(self.bookPayloadOffset + recordOffset)
|
|
|
|
tag = bookReadString(self.fo)
|
|
if tag != name :
|
|
raise DrmException("Parse Error : Invalid Record, record name doesn't match")
|
|
|
|
recordIndex = bookReadEncodedNumber(self.fo)
|
|
if recordIndex < 0 :
|
|
encrypted = True
|
|
recordIndex = -recordIndex -1
|
|
|
|
if recordIndex != index :
|
|
raise DrmException("Parse Error : Invalid Record, index doesn't match")
|
|
|
|
if (self.bookHeaderRecords[name][index][2] > 0):
|
|
compressed = True
|
|
record = self.fo.read(self.bookHeaderRecords[name][index][2])
|
|
else:
|
|
record = self.fo.read(self.bookHeaderRecords[name][index][1])
|
|
|
|
if encrypted:
|
|
if self.bookKey:
|
|
ctx = topazCryptoInit(self.bookKey)
|
|
record = topazCryptoDecrypt(record,ctx)
|
|
else :
|
|
raise DrmException("Error: Attempt to decrypt without bookKey")
|
|
|
|
if compressed:
|
|
record = zlib.decompress(record)
|
|
|
|
return record
|
|
|
|
def processBook(self, pidlst):
|
|
raw = 0
|
|
fixedimage=True
|
|
try:
|
|
keydata = self.getBookPayloadRecord('dkey', 0)
|
|
except DrmException, e:
|
|
print(u"no dkey record found, book may not be encrypted")
|
|
print(u"attempting to extrct files without a book key")
|
|
self.createBookDirectory()
|
|
self.extractFiles()
|
|
print(u"Successfully Extracted Topaz contents")
|
|
if inCalibre:
|
|
from calibre_plugins.dedrm import genbook
|
|
else:
|
|
import genbook
|
|
|
|
rv = genbook.generateBook(self.outdir, raw, fixedimage)
|
|
if rv == 0:
|
|
print(u"Book Successfully generated.")
|
|
return rv
|
|
|
|
# try each pid to decode the file
|
|
bookKey = None
|
|
for pid in pidlst:
|
|
# use 8 digit pids here
|
|
pid = pid[0:8]
|
|
print(u"Trying: {0}".format(pid))
|
|
bookKeys = []
|
|
data = keydata
|
|
try:
|
|
bookKeys+=decryptDkeyRecords(data,pid)
|
|
except DrmException, e:
|
|
pass
|
|
else:
|
|
bookKey = bookKeys[0]
|
|
print(u"Book Key Found! ({0})".format(bookKey.encode('hex')))
|
|
break
|
|
|
|
if not bookKey:
|
|
raise DrmException(u"No key found in {0:d} keys tried. Read the FAQs at Harper's repository: https://github.com/apprenticeharper/DeDRM_tools/blob/master/FAQs.md".format(len(pidlst)))
|
|
|
|
self.setBookKey(bookKey)
|
|
self.createBookDirectory()
|
|
self.extractFiles()
|
|
print(u"Successfully Extracted Topaz contents")
|
|
if inCalibre:
|
|
from calibre_plugins.dedrm import genbook
|
|
else:
|
|
import genbook
|
|
|
|
rv = genbook.generateBook(self.outdir, raw, fixedimage)
|
|
if rv == 0:
|
|
print(u"Book Successfully generated")
|
|
return rv
|
|
|
|
def createBookDirectory(self):
|
|
outdir = self.outdir
|
|
# create output directory structure
|
|
if not os.path.exists(outdir):
|
|
os.makedirs(outdir)
|
|
destdir = os.path.join(outdir,u"img")
|
|
if not os.path.exists(destdir):
|
|
os.makedirs(destdir)
|
|
destdir = os.path.join(outdir,u"color_img")
|
|
if not os.path.exists(destdir):
|
|
os.makedirs(destdir)
|
|
destdir = os.path.join(outdir,u"page")
|
|
if not os.path.exists(destdir):
|
|
os.makedirs(destdir)
|
|
destdir = os.path.join(outdir,u"glyphs")
|
|
if not os.path.exists(destdir):
|
|
os.makedirs(destdir)
|
|
|
|
def extractFiles(self):
|
|
outdir = self.outdir
|
|
for headerRecord in self.bookHeaderRecords:
|
|
name = headerRecord
|
|
if name != 'dkey':
|
|
ext = u".dat"
|
|
if name == 'img': ext = u".jpg"
|
|
if name == 'color' : ext = u".jpg"
|
|
print(u"Processing Section: {0}\n. . .".format(name), end=' ')
|
|
for index in range (0,len(self.bookHeaderRecords[name])) :
|
|
fname = u"{0}{1:04d}{2}".format(name,index,ext)
|
|
destdir = outdir
|
|
if name == 'img':
|
|
destdir = os.path.join(outdir,u"img")
|
|
if name == 'color':
|
|
destdir = os.path.join(outdir,u"color_img")
|
|
if name == 'page':
|
|
destdir = os.path.join(outdir,u"page")
|
|
if name == 'glyphs':
|
|
destdir = os.path.join(outdir,u"glyphs")
|
|
outputFile = os.path.join(destdir,fname)
|
|
print(u".", end=' ')
|
|
record = self.getBookPayloadRecord(name,index)
|
|
if record != '':
|
|
file(outputFile, 'wb').write(record)
|
|
print(u" ")
|
|
|
|
def getFile(self, zipname):
|
|
htmlzip = zipfile.ZipFile(zipname,'w',zipfile.ZIP_DEFLATED, False)
|
|
htmlzip.write(os.path.join(self.outdir,u"book.html"),u"book.html")
|
|
htmlzip.write(os.path.join(self.outdir,u"book.opf"),u"book.opf")
|
|
if os.path.isfile(os.path.join(self.outdir,u"cover.jpg")):
|
|
htmlzip.write(os.path.join(self.outdir,u"cover.jpg"),u"cover.jpg")
|
|
htmlzip.write(os.path.join(self.outdir,u"style.css"),u"style.css")
|
|
zipUpDir(htmlzip, self.outdir, u"img")
|
|
htmlzip.close()
|
|
|
|
def getBookType(self):
|
|
return u"Topaz"
|
|
|
|
def getBookExtension(self):
|
|
return u".htmlz"
|
|
|
|
def getSVGZip(self, zipname):
|
|
svgzip = zipfile.ZipFile(zipname,'w',zipfile.ZIP_DEFLATED, False)
|
|
svgzip.write(os.path.join(self.outdir,u"index_svg.xhtml"),u"index_svg.xhtml")
|
|
zipUpDir(svgzip, self.outdir, u"svg")
|
|
zipUpDir(svgzip, self.outdir, u"img")
|
|
svgzip.close()
|
|
|
|
def cleanup(self):
|
|
if os.path.isdir(self.outdir):
|
|
shutil.rmtree(self.outdir, True)
|
|
|
|
def usage(progname):
|
|
print(u"Removes DRM protection from Topaz ebooks and extracts the contents")
|
|
print(u"Usage:")
|
|
print(u" {0} [-k <kindle.k4i>] [-p <comma separated PIDs>] [-s <comma separated Kindle serial numbers>] <infile> <outdir>".format(progname))
|
|
|
|
# Main
|
|
def cli_main():
|
|
argv=unicode_argv()
|
|
progname = os.path.basename(argv[0])
|
|
print(u"TopazExtract v{0}.".format(__version__))
|
|
|
|
try:
|
|
opts, args = getopt.getopt(argv[1:], "k:p:s:x")
|
|
except getopt.GetoptError, err:
|
|
print(u"Error in options or arguments: {0}".format(err.args[0]))
|
|
usage(progname)
|
|
return 1
|
|
if len(args)<2:
|
|
usage(progname)
|
|
return 1
|
|
|
|
infile = args[0]
|
|
outdir = args[1]
|
|
if not os.path.isfile(infile):
|
|
print(u"Input File {0} Does Not Exist.".format(infile))
|
|
return 1
|
|
|
|
if not os.path.exists(outdir):
|
|
print(u"Output Directory {0} Does Not Exist.".format(outdir))
|
|
return 1
|
|
|
|
kDatabaseFiles = []
|
|
serials = []
|
|
pids = []
|
|
|
|
for o, a in opts:
|
|
if o == '-k':
|
|
if a == None :
|
|
raise DrmException("Invalid parameter for -k")
|
|
kDatabaseFiles.append(a)
|
|
if o == '-p':
|
|
if a == None :
|
|
raise DrmException("Invalid parameter for -p")
|
|
pids = a.split(',')
|
|
if o == '-s':
|
|
if a == None :
|
|
raise DrmException("Invalid parameter for -s")
|
|
serials = [serial.replace(" ","") for serial in a.split(',')]
|
|
|
|
bookname = os.path.splitext(os.path.basename(infile))[0]
|
|
|
|
tb = TopazBook(infile)
|
|
title = tb.getBookTitle()
|
|
print(u"Processing Book: {0}".format(title))
|
|
md1, md2 = tb.getPIDMetaInfo()
|
|
pids.extend(kgenpids.getPidList(md1, md2, serials, kDatabaseFiles))
|
|
|
|
try:
|
|
print(u"Decrypting Book")
|
|
tb.processBook(pids)
|
|
|
|
print(u" Creating HTML ZIP Archive")
|
|
zipname = os.path.join(outdir, bookname + u"_nodrm.htmlz")
|
|
tb.getFile(zipname)
|
|
|
|
print(u" Creating SVG ZIP Archive")
|
|
zipname = os.path.join(outdir, bookname + u"_SVG.zip")
|
|
tb.getSVGZip(zipname)
|
|
|
|
# removing internal temporary directory of pieces
|
|
tb.cleanup()
|
|
|
|
except DrmException, e:
|
|
print(u"Decryption failed\n{0}".format(traceback.format_exc()))
|
|
|
|
try:
|
|
tb.cleanup()
|
|
except:
|
|
pass
|
|
return 1
|
|
|
|
except Exception, e:
|
|
print(u"Decryption failed\m{0}".format(traceback.format_exc()))
|
|
try:
|
|
tb.cleanup()
|
|
except:
|
|
pass
|
|
return 1
|
|
|
|
return 0
|
|
|
|
|
|
if __name__ == '__main__':
|
|
sys.stdout=SafeUnbuffered(sys.stdout)
|
|
sys.stderr=SafeUnbuffered(sys.stderr)
|
|
sys.exit(cli_main())
|