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ineptepub 3

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i♥cabbages 2010-02-13 22:15:36 +00:00 committed by Apprentice Alf
parent 9c73801685
commit e9a7312759
1 changed files with 13 additions and 12 deletions
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25
Adobe_EPUB_Tools/ineptepub.pyw
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@ -1,6 +1,6 @@
#! /usr/bin/python #! /usr/bin/python
# ineptepub.pyw, version 2 # ineptepub.pyw, version 3
# To run this program install Python 2.6 from http://www.python.org/download/ # To run this program install Python 2.6 from http://www.python.org/download/
# and PyCrypto from http://www.voidspace.org.uk/python/modules.shtml#pycrypto # and PyCrypto from http://www.voidspace.org.uk/python/modules.shtml#pycrypto
@ -10,6 +10,7 @@
# Revision history: # Revision history:
# 1 - Initial release # 1 - Initial release
# 2 - Rename to INEPT, fix exit code # 2 - Rename to INEPT, fix exit code
# 3 - Add cmd or gui choosing
""" """
Decrypt Adobe ADEPT-encrypted EPUB books. Decrypt Adobe ADEPT-encrypted EPUB books.
@ -62,7 +63,7 @@ class ASN1Parser(object):
def __init__(self, bytes): def __init__(self, bytes):
self.bytes = bytes self.bytes = bytes
self.index = 0 self.index = 0
def get(self, length): def get(self, length):
if self.index + length > len(self.bytes): if self.index + length > len(self.bytes):
raise ASN1Error("Error decoding ASN.1") raise ASN1Error("Error decoding ASN.1")
@ -72,22 +73,22 @@ class ASN1Parser(object):
x |= self.bytes[self.index] x |= self.bytes[self.index]
self.index += 1 self.index += 1
return x return x
def getFixBytes(self, lengthBytes): def getFixBytes(self, lengthBytes):
bytes = self.bytes[self.index : self.index+lengthBytes] bytes = self.bytes[self.index : self.index+lengthBytes]
self.index += lengthBytes self.index += lengthBytes
return bytes return bytes
def getVarBytes(self, lengthLength): def getVarBytes(self, lengthLength):
lengthBytes = self.get(lengthLength) lengthBytes = self.get(lengthLength)
return self.getFixBytes(lengthBytes) return self.getFixBytes(lengthBytes)
def getFixList(self, length, lengthList): def getFixList(self, length, lengthList):
l = [0] * lengthList l = [0] * lengthList
for x in range(lengthList): for x in range(lengthList):
l[x] = self.get(length) l[x] = self.get(length)
return l return l
def getVarList(self, length, lengthLength): def getVarList(self, length, lengthLength):
lengthList = self.get(lengthLength) lengthList = self.get(lengthLength)
if lengthList % length != 0: if lengthList % length != 0:
@ -97,19 +98,19 @@ class ASN1Parser(object):
for x in range(lengthList): for x in range(lengthList):
l[x] = self.get(length) l[x] = self.get(length)
return l return l
def startLengthCheck(self, lengthLength): def startLengthCheck(self, lengthLength):
self.lengthCheck = self.get(lengthLength) self.lengthCheck = self.get(lengthLength)
self.indexCheck = self.index self.indexCheck = self.index
def setLengthCheck(self, length): def setLengthCheck(self, length):
self.lengthCheck = length self.lengthCheck = length
self.indexCheck = self.index self.indexCheck = self.index
def stopLengthCheck(self): def stopLengthCheck(self):
if (self.index - self.indexCheck) != self.lengthCheck: if (self.index - self.indexCheck) != self.lengthCheck:
raise ASN1Error("Error decoding ASN.1") raise ASN1Error("Error decoding ASN.1")
def atLengthCheck(self): def atLengthCheck(self):
if (self.index - self.indexCheck) < self.lengthCheck: if (self.index - self.indexCheck) < self.lengthCheck:
return False return False
@ -162,7 +163,7 @@ class Decryptor(object):
path = elem.get('URI', None) path = elem.get('URI', None)
if path is not None: if path is not None:
encrypted.add(path) encrypted.add(path)
def decompress(self, bytes): def decompress(self, bytes):
dc = zlib.decompressobj(-15) dc = zlib.decompressobj(-15)
bytes = dc.decompress(bytes) bytes = dc.decompress(bytes)
@ -170,7 +171,7 @@ class Decryptor(object):
if ex: if ex:
bytes = bytes + ex bytes = bytes + ex
return bytes return bytes
def decrypt(self, path, data): def decrypt(self, path, data):
if path in self._encrypted: if path in self._encrypted:
data = self._aes.decrypt(data)[16:] data = self._aes.decrypt(data)[16:]