2011-01-17 13:24:53 +06:00
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#!/usr/bin/env python
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class Unbuffered:
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def __init__(self, stream):
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self.stream = stream
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def write(self, data):
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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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import sys
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2011-06-16 11:59:20 +06:00
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if 'calibre' in sys.modules:
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inCalibre = True
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else:
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inCalibre = False
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2012-03-07 00:24:28 +06:00
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buildXML = False
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2011-01-17 13:24:53 +06:00
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import os, csv, getopt
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import zlib, zipfile, tempfile, shutil
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from struct import pack
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from struct import unpack
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2012-03-07 00:24:28 +06:00
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from alfcrypto import Topaz_Cipher
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2011-01-17 13:24:53 +06:00
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class TpzDRMError(Exception):
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pass
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2011-06-16 11:59:20 +06:00
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2012-03-07 00:24:28 +06:00
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2011-01-17 13:24:53 +06:00
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# local support routines
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2011-06-16 11:59:20 +06:00
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if inCalibre:
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from calibre_plugins.k4mobidedrm import kgenpids
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else:
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import kgenpids
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# recursive zip creation support routine
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def zipUpDir(myzip, tdir, localname):
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currentdir = tdir
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if localname != "":
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currentdir = os.path.join(currentdir,localname)
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list = os.listdir(currentdir)
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for file in list:
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afilename = file
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localfilePath = os.path.join(localname, afilename)
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realfilePath = os.path.join(currentdir,file)
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if os.path.isfile(realfilePath):
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myzip.write(realfilePath, localfilePath)
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elif os.path.isdir(realfilePath):
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zipUpDir(myzip, tdir, localfilePath)
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2011-01-17 13:24:53 +06:00
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#
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# Utility routines
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#
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# Get a 7 bit encoded number from file
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def bookReadEncodedNumber(fo):
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flag = False
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data = ord(fo.read(1))
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if data == 0xFF:
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2012-03-07 00:24:28 +06:00
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flag = True
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data = ord(fo.read(1))
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2011-01-17 13:24:53 +06:00
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if data >= 0x80:
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datax = (data & 0x7F)
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while data >= 0x80 :
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data = ord(fo.read(1))
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datax = (datax <<7) + (data & 0x7F)
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2012-03-07 00:24:28 +06:00
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data = datax
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2011-01-17 13:24:53 +06:00
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if flag:
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2012-03-07 00:24:28 +06:00
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data = -data
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2011-01-17 13:24:53 +06:00
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return data
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2012-03-07 00:24:28 +06:00
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# Get a length prefixed string from file
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2011-01-17 13:24:53 +06:00
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def bookReadString(fo):
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stringLength = bookReadEncodedNumber(fo)
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2012-03-07 00:24:28 +06:00
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return unpack(str(stringLength)+"s",fo.read(stringLength))[0]
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2011-01-17 13:24:53 +06:00
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#
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# crypto routines
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#
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# Context initialisation for the Topaz Crypto
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def topazCryptoInit(key):
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2012-03-07 00:24:28 +06:00
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return Topaz_Cipher().ctx_init(key)
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# ctx1 = 0x0CAFFE19E
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# for keyChar in key:
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# keyByte = ord(keyChar)
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# ctx2 = ctx1
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# ctx1 = ((((ctx1 >>2) * (ctx1 >>7))&0xFFFFFFFF) ^ (keyByte * keyByte * 0x0F902007)& 0xFFFFFFFF )
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# return [ctx1,ctx2]
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2011-01-17 13:24:53 +06:00
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# decrypt data with the context prepared by topazCryptoInit()
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def topazCryptoDecrypt(data, ctx):
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2012-03-07 00:24:28 +06:00
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return Topaz_Cipher().decrypt(data, ctx)
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# ctx1 = ctx[0]
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# ctx2 = ctx[1]
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# plainText = ""
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# for dataChar in data:
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# dataByte = ord(dataChar)
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# m = (dataByte ^ ((ctx1 >> 3) &0xFF) ^ ((ctx2<<3) & 0xFF)) &0xFF
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# ctx2 = ctx1
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# ctx1 = (((ctx1 >> 2) * (ctx1 >> 7)) &0xFFFFFFFF) ^((m * m * 0x0F902007) &0xFFFFFFFF)
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# plainText += chr(m)
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# return plainText
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2011-01-17 13:24:53 +06:00
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# Decrypt data with the PID
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def decryptRecord(data,PID):
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ctx = topazCryptoInit(PID)
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return topazCryptoDecrypt(data, ctx)
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# Try to decrypt a dkey record (contains the bookPID)
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def decryptDkeyRecord(data,PID):
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record = decryptRecord(data,PID)
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fields = unpack("3sB8sB8s3s",record)
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if fields[0] != "PID" or fields[5] != "pid" :
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raise TpzDRMError("Didn't find PID magic numbers in record")
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elif fields[1] != 8 or fields[3] != 8 :
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raise TpzDRMError("Record didn't contain correct length fields")
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elif fields[2] != PID :
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raise TpzDRMError("Record didn't contain PID")
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return fields[4]
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# Decrypt all dkey records (contain the book PID)
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def decryptDkeyRecords(data,PID):
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nbKeyRecords = ord(data[0])
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records = []
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data = data[1:]
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for i in range (0,nbKeyRecords):
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length = ord(data[0])
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try:
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key = decryptDkeyRecord(data[1:length+1],PID)
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records.append(key)
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except TpzDRMError:
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pass
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data = data[1+length:]
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if len(records) == 0:
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raise TpzDRMError("BookKey Not Found")
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return records
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class TopazBook:
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2011-06-16 11:59:20 +06:00
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def __init__(self, filename):
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2011-01-17 13:24:53 +06:00
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self.fo = file(filename, 'rb')
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2011-06-16 11:59:20 +06:00
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self.outdir = tempfile.mkdtemp()
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2011-10-28 12:24:15 +06:00
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# self.outdir = 'rawdat'
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2011-01-17 13:24:53 +06:00
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self.bookPayloadOffset = 0
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self.bookHeaderRecords = {}
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self.bookMetadata = {}
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self.bookKey = None
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magic = unpack("4s",self.fo.read(4))[0]
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if magic != 'TPZ0':
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raise TpzDRMError("Parse Error : Invalid Header, not a Topaz file")
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self.parseTopazHeaders()
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self.parseMetadata()
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def parseTopazHeaders(self):
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def bookReadHeaderRecordData():
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2012-03-07 00:24:28 +06:00
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# Read and return the data of one header record at the current book file position
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2011-01-17 13:24:53 +06:00
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# [[offset,decompressedLength,compressedLength],...]
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nbValues = bookReadEncodedNumber(self.fo)
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values = []
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for i in range (0,nbValues):
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values.append([bookReadEncodedNumber(self.fo),bookReadEncodedNumber(self.fo),bookReadEncodedNumber(self.fo)])
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return values
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def parseTopazHeaderRecord():
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# Read and parse one header record at the current book file position and return the associated data
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# [[offset,decompressedLength,compressedLength],...]
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if ord(self.fo.read(1)) != 0x63:
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raise TpzDRMError("Parse Error : Invalid Header")
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tag = bookReadString(self.fo)
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record = bookReadHeaderRecordData()
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return [tag,record]
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nbRecords = bookReadEncodedNumber(self.fo)
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for i in range (0,nbRecords):
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result = parseTopazHeaderRecord()
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# print result[0], result[1]
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self.bookHeaderRecords[result[0]] = result[1]
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if ord(self.fo.read(1)) != 0x64 :
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raise TpzDRMError("Parse Error : Invalid Header")
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self.bookPayloadOffset = self.fo.tell()
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def parseMetadata(self):
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# Parse the metadata record from the book payload and return a list of [key,values]
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self.fo.seek(self.bookPayloadOffset + self.bookHeaderRecords["metadata"][0][0])
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tag = bookReadString(self.fo)
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if tag != "metadata" :
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raise TpzDRMError("Parse Error : Record Names Don't Match")
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flags = ord(self.fo.read(1))
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nbRecords = ord(self.fo.read(1))
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2011-02-18 17:37:27 +06:00
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# print nbRecords
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2011-01-17 13:24:53 +06:00
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for i in range (0,nbRecords) :
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2011-02-18 17:37:27 +06:00
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keyval = bookReadString(self.fo)
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content = bookReadString(self.fo)
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# print keyval
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# print content
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self.bookMetadata[keyval] = content
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2011-01-17 13:24:53 +06:00
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return self.bookMetadata
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def getPIDMetaInfo(self):
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2011-02-18 17:37:27 +06:00
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keysRecord = self.bookMetadata.get('keys','')
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keysRecordRecord = ''
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if keysRecord != '':
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keylst = keysRecord.split(',')
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for keyval in keylst:
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keysRecordRecord += self.bookMetadata.get(keyval,'')
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2011-01-17 13:24:53 +06:00
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return keysRecord, keysRecordRecord
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def getBookTitle(self):
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title = ''
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if 'Title' in self.bookMetadata:
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title = self.bookMetadata['Title']
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return title
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def setBookKey(self, key):
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self.bookKey = key
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def getBookPayloadRecord(self, name, index):
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2012-03-07 00:24:28 +06:00
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# Get a record in the book payload, given its name and index.
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# decrypted and decompressed if necessary
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2011-01-17 13:24:53 +06:00
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encrypted = False
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compressed = False
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2012-03-07 00:24:28 +06:00
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try:
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2011-01-17 13:24:53 +06:00
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recordOffset = self.bookHeaderRecords[name][index][0]
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except:
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raise TpzDRMError("Parse Error : Invalid Record, record not found")
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self.fo.seek(self.bookPayloadOffset + recordOffset)
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tag = bookReadString(self.fo)
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if tag != name :
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raise TpzDRMError("Parse Error : Invalid Record, record name doesn't match")
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recordIndex = bookReadEncodedNumber(self.fo)
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if recordIndex < 0 :
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encrypted = True
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recordIndex = -recordIndex -1
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if recordIndex != index :
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raise TpzDRMError("Parse Error : Invalid Record, index doesn't match")
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if (self.bookHeaderRecords[name][index][2] > 0):
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compressed = True
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record = self.fo.read(self.bookHeaderRecords[name][index][2])
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else:
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record = self.fo.read(self.bookHeaderRecords[name][index][1])
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if encrypted:
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if self.bookKey:
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ctx = topazCryptoInit(self.bookKey)
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record = topazCryptoDecrypt(record,ctx)
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else :
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raise TpzDRMError("Error: Attempt to decrypt without bookKey")
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if compressed:
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record = zlib.decompress(record)
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return record
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def processBook(self, pidlst):
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raw = 0
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fixedimage=True
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try:
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keydata = self.getBookPayloadRecord('dkey', 0)
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except TpzDRMError, e:
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print "no dkey record found, book may not be encrypted"
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print "attempting to extrct files without a book key"
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self.createBookDirectory()
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self.extractFiles()
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print "Successfully Extracted Topaz contents"
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2012-09-09 06:45:24 +06:00
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if inCalibre:
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from calibre_plugins.k4mobidedrm import genbook
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else:
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import genbook
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2011-01-17 13:24:53 +06:00
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rv = genbook.generateBook(self.outdir, raw, fixedimage)
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if rv == 0:
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print "\nBook Successfully generated"
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2012-03-07 00:24:28 +06:00
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return rv
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2011-01-17 13:24:53 +06:00
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# try each pid to decode the file
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bookKey = None
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for pid in pidlst:
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# use 8 digit pids here
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pid = pid[0:8]
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print "\nTrying: ", pid
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bookKeys = []
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data = keydata
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try:
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bookKeys+=decryptDkeyRecords(data,pid)
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except TpzDRMError, e:
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pass
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else:
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bookKey = bookKeys[0]
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print "Book Key Found!"
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break
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if not bookKey:
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raise TpzDRMError('Decryption Unsucessful; No valid pid found')
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self.setBookKey(bookKey)
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self.createBookDirectory()
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self.extractFiles()
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print "Successfully Extracted Topaz contents"
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2012-09-09 06:45:24 +06:00
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if inCalibre:
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from calibre_plugins.k4mobidedrm import genbook
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else:
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import genbook
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2011-01-17 13:24:53 +06:00
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rv = genbook.generateBook(self.outdir, raw, fixedimage)
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if rv == 0:
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print "\nBook Successfully generated"
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2012-03-07 00:24:28 +06:00
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return rv
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2011-01-17 13:24:53 +06:00
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def createBookDirectory(self):
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outdir = self.outdir
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# create output directory structure
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if not os.path.exists(outdir):
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os.makedirs(outdir)
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destdir = os.path.join(outdir,'img')
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if not os.path.exists(destdir):
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os.makedirs(destdir)
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destdir = os.path.join(outdir,'color_img')
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if not os.path.exists(destdir):
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os.makedirs(destdir)
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destdir = os.path.join(outdir,'page')
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if not os.path.exists(destdir):
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os.makedirs(destdir)
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destdir = os.path.join(outdir,'glyphs')
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if not os.path.exists(destdir):
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os.makedirs(destdir)
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def extractFiles(self):
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outdir = self.outdir
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for headerRecord in self.bookHeaderRecords:
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name = headerRecord
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if name != "dkey" :
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ext = '.dat'
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if name == 'img' : ext = '.jpg'
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|
|
|
if name == 'color' : ext = '.jpg'
|
|
|
|
print "\nProcessing Section: %s " % name
|
|
|
|
for index in range (0,len(self.bookHeaderRecords[name])) :
|
|
|
|
fnum = "%04d" % index
|
|
|
|
fname = name + fnum + ext
|
|
|
|
destdir = outdir
|
|
|
|
if name == 'img':
|
|
|
|
destdir = os.path.join(outdir,'img')
|
|
|
|
if name == 'color':
|
|
|
|
destdir = os.path.join(outdir,'color_img')
|
|
|
|
if name == 'page':
|
|
|
|
destdir = os.path.join(outdir,'page')
|
|
|
|
if name == 'glyphs':
|
|
|
|
destdir = os.path.join(outdir,'glyphs')
|
|
|
|
outputFile = os.path.join(destdir,fname)
|
|
|
|
print ".",
|
|
|
|
record = self.getBookPayloadRecord(name,index)
|
|
|
|
if record != '':
|
|
|
|
file(outputFile, 'wb').write(record)
|
|
|
|
print " "
|
|
|
|
|
2011-06-16 11:59:20 +06:00
|
|
|
def getHTMLZip(self, zipname):
|
|
|
|
htmlzip = zipfile.ZipFile(zipname,'w',zipfile.ZIP_DEFLATED, False)
|
|
|
|
htmlzip.write(os.path.join(self.outdir,'book.html'),'book.html')
|
|
|
|
htmlzip.write(os.path.join(self.outdir,'book.opf'),'book.opf')
|
|
|
|
if os.path.isfile(os.path.join(self.outdir,'cover.jpg')):
|
|
|
|
htmlzip.write(os.path.join(self.outdir,'cover.jpg'),'cover.jpg')
|
|
|
|
htmlzip.write(os.path.join(self.outdir,'style.css'),'style.css')
|
|
|
|
zipUpDir(htmlzip, self.outdir, 'img')
|
|
|
|
htmlzip.close()
|
|
|
|
|
|
|
|
def getSVGZip(self, zipname):
|
|
|
|
svgzip = zipfile.ZipFile(zipname,'w',zipfile.ZIP_DEFLATED, False)
|
|
|
|
svgzip.write(os.path.join(self.outdir,'index_svg.xhtml'),'index_svg.xhtml')
|
|
|
|
zipUpDir(svgzip, self.outdir, 'svg')
|
|
|
|
zipUpDir(svgzip, self.outdir, 'img')
|
|
|
|
svgzip.close()
|
2012-03-07 00:24:28 +06:00
|
|
|
|
2011-06-16 11:59:20 +06:00
|
|
|
def getXMLZip(self, zipname):
|
|
|
|
xmlzip = zipfile.ZipFile(zipname,'w',zipfile.ZIP_DEFLATED, False)
|
|
|
|
targetdir = os.path.join(self.outdir,'xml')
|
|
|
|
zipUpDir(xmlzip, targetdir, '')
|
|
|
|
zipUpDir(xmlzip, self.outdir, 'img')
|
|
|
|
xmlzip.close()
|
|
|
|
|
|
|
|
def cleanup(self):
|
|
|
|
if os.path.isdir(self.outdir):
|
2012-03-07 00:24:28 +06:00
|
|
|
shutil.rmtree(self.outdir, True)
|
2011-01-17 13:24:53 +06:00
|
|
|
|
|
|
|
def usage(progname):
|
|
|
|
print "Removes DRM protection from Topaz ebooks and extract the contents"
|
|
|
|
print "Usage:"
|
|
|
|
print " %s [-k <kindle.info>] [-p <pidnums>] [-s <kindleSerialNumbers>] <infile> <outdir> " % progname
|
2012-03-07 00:24:28 +06:00
|
|
|
|
2011-01-17 13:24:53 +06:00
|
|
|
|
|
|
|
# Main
|
|
|
|
def main(argv=sys.argv):
|
2012-03-07 00:24:28 +06:00
|
|
|
global buildXML
|
2011-01-17 13:24:53 +06:00
|
|
|
progname = os.path.basename(argv[0])
|
|
|
|
k4 = False
|
|
|
|
pids = []
|
|
|
|
serials = []
|
|
|
|
kInfoFiles = []
|
2012-03-07 00:24:28 +06:00
|
|
|
|
2011-01-17 13:24:53 +06:00
|
|
|
try:
|
|
|
|
opts, args = getopt.getopt(sys.argv[1:], "k:p:s:")
|
|
|
|
except getopt.GetoptError, err:
|
|
|
|
print str(err)
|
|
|
|
usage(progname)
|
|
|
|
return 1
|
|
|
|
if len(args)<2:
|
|
|
|
usage(progname)
|
|
|
|
return 1
|
2012-03-07 00:24:28 +06:00
|
|
|
|
2011-01-17 13:24:53 +06:00
|
|
|
for o, a in opts:
|
|
|
|
if o == "-k":
|
|
|
|
if a == None :
|
|
|
|
print "Invalid parameter for -k"
|
|
|
|
return 1
|
|
|
|
kInfoFiles.append(a)
|
|
|
|
if o == "-p":
|
|
|
|
if a == None :
|
|
|
|
print "Invalid parameter for -p"
|
|
|
|
return 1
|
|
|
|
pids = a.split(',')
|
|
|
|
if o == "-s":
|
|
|
|
if a == None :
|
|
|
|
print "Invalid parameter for -s"
|
|
|
|
return 1
|
|
|
|
serials = a.split(',')
|
|
|
|
k4 = True
|
|
|
|
|
|
|
|
infile = args[0]
|
|
|
|
outdir = args[1]
|
|
|
|
|
|
|
|
if not os.path.isfile(infile):
|
|
|
|
print "Input File Does Not Exist"
|
|
|
|
return 1
|
|
|
|
|
|
|
|
bookname = os.path.splitext(os.path.basename(infile))[0]
|
|
|
|
|
2011-06-16 11:59:20 +06:00
|
|
|
tb = TopazBook(infile)
|
2011-01-17 13:24:53 +06:00
|
|
|
title = tb.getBookTitle()
|
|
|
|
print "Processing Book: ", title
|
|
|
|
keysRecord, keysRecordRecord = tb.getPIDMetaInfo()
|
2012-03-07 00:24:28 +06:00
|
|
|
pidlst = kgenpids.getPidList(keysRecord, keysRecordRecord, k4, pids, serials, kInfoFiles)
|
2011-01-17 13:24:53 +06:00
|
|
|
|
|
|
|
try:
|
2011-06-16 11:59:20 +06:00
|
|
|
print "Decrypting Book"
|
2011-01-17 13:24:53 +06:00
|
|
|
tb.processBook(pidlst)
|
2011-06-16 11:59:20 +06:00
|
|
|
|
|
|
|
print " Creating HTML ZIP Archive"
|
|
|
|
zipname = os.path.join(outdir, bookname + '_nodrm' + '.htmlz')
|
|
|
|
tb.getHTMLZip(zipname)
|
|
|
|
|
|
|
|
print " Creating SVG ZIP Archive"
|
2011-10-28 12:24:15 +06:00
|
|
|
zipname = os.path.join(outdir, bookname + '_SVG' + '.zip')
|
2011-06-16 11:59:20 +06:00
|
|
|
tb.getSVGZip(zipname)
|
|
|
|
|
2012-03-07 00:24:28 +06:00
|
|
|
if buildXML:
|
|
|
|
print " Creating XML ZIP Archive"
|
|
|
|
zipname = os.path.join(outdir, bookname + '_XML' + '.zip')
|
|
|
|
tb.getXMLZip(zipname)
|
2011-06-16 11:59:20 +06:00
|
|
|
|
|
|
|
# removing internal temporary directory of pieces
|
|
|
|
tb.cleanup()
|
|
|
|
|
2011-01-17 13:24:53 +06:00
|
|
|
except TpzDRMError, e:
|
|
|
|
print str(e)
|
2011-10-28 12:24:15 +06:00
|
|
|
# tb.cleanup()
|
2011-01-17 13:24:53 +06:00
|
|
|
return 1
|
|
|
|
|
2011-06-16 11:59:20 +06:00
|
|
|
except Exception, e:
|
|
|
|
print str(e)
|
2011-10-28 12:24:15 +06:00
|
|
|
# tb.cleanup
|
2011-06-16 11:59:20 +06:00
|
|
|
return 1
|
2011-01-17 13:24:53 +06:00
|
|
|
|
|
|
|
return 0
|
2012-03-07 00:24:28 +06:00
|
|
|
|
2011-01-17 13:24:53 +06:00
|
|
|
|
|
|
|
if __name__ == '__main__':
|
2011-06-16 11:59:20 +06:00
|
|
|
sys.stdout=Unbuffered(sys.stdout)
|
2011-01-17 13:24:53 +06:00
|
|
|
sys.exit(main())
|