mirror of
https://github.com/noDRM/DeDRM_tools.git
synced 2024-11-05 13:36:10 +06:00
71 lines
2.1 KiB
Python
71 lines
2.1 KiB
Python
#!/usr/bin/env python3
|
|
# -*- coding: utf-8 -*-
|
|
|
|
# lcpdedrm.py
|
|
# Copyright © 2021-2022 NoDRM
|
|
|
|
# Released under the terms of the GNU General Public Licence, version 3
|
|
# <http://www.gnu.org/licenses/>
|
|
|
|
|
|
# Revision history:
|
|
# 1 - Initial release
|
|
# 2 - LCP DRM code removed due to a DMCA takedown.
|
|
|
|
"""
|
|
This file used to contain code to remove the Readium LCP DRM
|
|
from eBooks. Unfortunately, Readium has issued a DMCA takedown
|
|
request, so I was forced to remove that code:
|
|
|
|
https://github.com/github/dmca/blob/master/2022/01/2022-01-04-readium.md
|
|
|
|
This file now just returns an error message when asked to remove LCP DRM.
|
|
For more information, see this issue:
|
|
https://github.com/noDRM/DeDRM_tools/issues/18
|
|
"""
|
|
|
|
__license__ = 'GPL v3'
|
|
__version__ = "2"
|
|
|
|
import json
|
|
from zipfile import ZipFile
|
|
from contextlib import closing
|
|
|
|
|
|
class LCPError(Exception):
|
|
pass
|
|
|
|
# Check file to see if this is an LCP-protected file
|
|
def isLCPbook(inpath):
|
|
try:
|
|
with closing(ZipFile(open(inpath, 'rb'))) as lcpbook:
|
|
if ("META-INF/license.lcpl" not in lcpbook.namelist() or
|
|
"META-INF/encryption.xml" not in lcpbook.namelist() or
|
|
b"EncryptedContentKey" not in lcpbook.read("META-INF/encryption.xml")):
|
|
return False
|
|
|
|
license = json.loads(lcpbook.read('META-INF/license.lcpl'))
|
|
|
|
if "id" in license and "encryption" in license and "profile" in license["encryption"]:
|
|
return True
|
|
|
|
except:
|
|
return False
|
|
|
|
return False
|
|
|
|
|
|
# Takes a file and a list of passphrases
|
|
def decryptLCPbook(inpath, passphrases, parent_object):
|
|
|
|
if not isLCPbook(inpath):
|
|
raise LCPError("This is not an LCP-encrypted book")
|
|
|
|
print("LCP: LCP DRM removal no longer supported due to a DMCA takedown request.")
|
|
print("LCP: The takedown request can be found here: ")
|
|
print("LCP: https://github.com/github/dmca/blob/master/2022/01/2022-01-04-readium.md ")
|
|
print("LCP: More information can be found in the Github repository: ")
|
|
print("LCP: https://github.com/noDRM/DeDRM_tools/issues/18 ")
|
|
|
|
raise LCPError("LCP DRM removal no longer supported")
|