acsm-calibre-plugin/calibre-plugin/__init__.py

322 lines
13 KiB
Python

#!/usr/bin/env python3
# -*- coding: utf-8 -*-
# Calibre plugin for ACSM files.
# Revision history:
# v0.0.1: First version.
# v0.0.2: Allow key extraction without extra binary call (unreleased test version)
# v0.0.3: Standalone Calibre plugin for Linux, Windows, MacOS without the need for libgourou.
# v0.0.4: Manually execute DeDRM (if installed) after converting ACSM to EPUB.
# v0.0.5: Bugfix: DeDRM plugin was also executed if it's installed but disabled.
# v0.0.6: First PDF support, allow importing previously exported activation data.
# v0.0.7: More PDF logging, PDF reading in latin-1, MacOS locale bugfix
from calibre.customize import FileTypePlugin # type: ignore
__version__ = '0.0.7'
PLUGIN_NAME = "DeACSM"
PLUGIN_VERSION_TUPLE = tuple([int(x) for x in __version__.split(".")])
PLUGIN_VERSION = ".".join([str(x)for x in PLUGIN_VERSION_TUPLE])
from calibre.utils.config import config_dir # type: ignore
import os, shutil, traceback, sys
import zipfile
from lxml import etree
class DeACSM(FileTypePlugin):
name = PLUGIN_NAME
description = "ACSM Input Plugin - Takes an Adobe ACSM file and converts that into a useable EPUB or PDF file. Python reimplementation of libgourou by Grégory Soutadé"
supported_platforms = ['linux', 'osx', 'windows']
author = "Leseratte10"
version = PLUGIN_VERSION_TUPLE
minimum_calibre_version = (5, 0, 0)
file_types = set(['acsm'])
on_import = True
on_preprocess = True
priority = 2000
def initialize(self):
"""
On initialization, make sure we have all the libraries (python-rsa, cryptography,
oscrypto and their dependencies asn1crypto and pyasn1) that the plugin needs.
Unfortunately the Adobe encryption is kinda weird and nonstandard and doesn't work
with just the python modules included with Calibre.
"""
try:
self.pluginsdir = os.path.join(config_dir,"plugins")
if not os.path.exists(self.pluginsdir):
os.mkdir(self.pluginsdir)
self.maindir = os.path.join(self.pluginsdir,"DeACSM")
if not os.path.exists(self.maindir):
os.mkdir(self.maindir)
# Re-Extract modules
self.moddir = os.path.join(self.maindir,"modules")
if os.path.exists(self.moddir):
shutil.rmtree(self.moddir, ignore_errors=True)
os.mkdir(self.moddir)
names = ["cryptography.zip", "rsa.zip", "oscrypto.zip", "asn1crypto.zip", "pyasn1.zip"]
lib_dict = self.load_resources(names)
print("{0} v{1}: Copying needed library files from plugin zip".format(PLUGIN_NAME, PLUGIN_VERSION))
for entry, data in lib_dict.items():
file_path = os.path.join(self.moddir, entry)
try:
os.remove(file_path)
except:
pass
try:
open(file_path,'wb').write(data)
with zipfile.ZipFile(file_path, 'r') as ref:
ref.extractall(self.moddir)
os.remove(file_path)
except:
print("{0} v{1}: Exception when copying needed library files".format(PLUGIN_NAME, PLUGIN_VERSION))
traceback.print_exc()
pass
sys.path.insert(0, os.path.join(self.moddir, "cryptography"))
sys.path.insert(0, os.path.join(self.moddir, "rsa"))
sys.path.insert(0, os.path.join(self.moddir, "oscrypto"))
sys.path.insert(0, os.path.join(self.moddir, "asn1crypto"))
sys.path.insert(0, os.path.join(self.moddir, "pyasn1"))
# Okay, now all the modules are available, import the Adobe modules.
# Account:
try:
from calibre_plugins.deacsm.libadobe import VAR_HOBBES_VERSION, createDeviceKeyFile, update_account_path
from calibre_plugins.deacsm.libadobeAccount import createDeviceFile, createUser, signIn, activateDevice
except:
try:
from libadobe import VAR_HOBBES_VERSION, createDeviceKeyFile, update_account_path
from libadobeAccount import createDeviceFile, createUser, signIn, activateDevice
except:
print("{0} v{1}: Error while importing Account stuff".format(PLUGIN_NAME, PLUGIN_VERSION))
traceback.print_exc()
# Fulfill:
try:
from calibre_plugins.deacsm.libadobe import sendHTTPRequest
from calibre_plugins.deacsm.libadobeFulfill import buildRights, fulfill
except:
try:
from libadobe import sendHTTPRequest
from libadobeFulfill import buildRights, fulfill
except:
print("{0} v{1}: Error while importing Fulfillment stuff".format(PLUGIN_NAME, PLUGIN_VERSION))
traceback.print_exc()
import calibre_plugins.deacsm.prefs as prefs # type: ignore
deacsmprefs = prefs.DeACSM_Prefs()
update_account_path(deacsmprefs["path_to_account_data"])
except Exception as e:
traceback.print_exc()
raise
def is_customizable(self):
return True
def config_widget(self):
import calibre_plugins.deacsm.config as config # type: ignore
return config.ConfigWidget(self.plugin_path)
def save_settings(self, config_widget):
config_widget.save_settings()
def ADE_sanity_check(self):
import calibre_plugins.deacsm.prefs as prefs # type: ignore
deacsmprefs = prefs.DeACSM_Prefs()
activation_xml_path = os.path.join(deacsmprefs["path_to_account_data"], "activation.xml")
container = None
try:
container = etree.parse(activation_xml_path)
except:
return False
try:
adeptNS = lambda tag: '{%s}%s' % ('http://ns.adobe.com/adept', tag)
if container.find(adeptNS("activationToken")) == None:
return False
if container.find(adeptNS("credentials")).find(adeptNS("pkcs12")) == None:
return False
return True
except:
return False
def download(self, replyData: str):
try:
from calibre_plugins.deacsm.libadobe import sendHTTPRequest
from calibre_plugins.deacsm.libadobeFulfill import buildRights, fulfill
except:
try:
from libadobe import sendHTTPRequest
from libadobeFulfill import buildRights, fulfill
except:
print("{0} v{1}: Error while importing Fulfillment stuff".format(PLUGIN_NAME, PLUGIN_VERSION))
traceback.print_exc()
try:
from calibre_plugins.deacsm.libpdf import patch_drm_into_pdf, prepare_string_from_xml
except:
try:
from libpdf import patch_drm_into_pdf, prepare_string_from_xml
except:
print("{0} v{1}: Error while importing PDF patch".format(PLUGIN_NAME, PLUGIN_VERSION))
traceback.print_exc()
adobe_fulfill_response = etree.fromstring(replyData)
NSMAP = { "adept" : "http://ns.adobe.com/adept" }
adNS = lambda tag: '{%s}%s' % ('http://ns.adobe.com/adept', tag)
adDC = lambda tag: '{%s}%s' % ('http://purl.org/dc/elements/1.1/', tag)
metadata_node = adobe_fulfill_response.find("./%s/%s/%s" % (adNS("fulfillmentResult"), adNS("resourceItemInfo"), adNS("metadata")))
download_url = adobe_fulfill_response.find("./%s/%s/%s" % (adNS("fulfillmentResult"), adNS("resourceItemInfo"), adNS("src"))).text
license_token_node = adobe_fulfill_response.find("./%s/%s/%s" % (adNS("fulfillmentResult"), adNS("resourceItemInfo"), adNS("licenseToken")))
rights_xml_str = buildRights(license_token_node)
if (rights_xml_str is None):
print("{0} v{1}: Building rights.xml failed!".format(PLUGIN_NAME, PLUGIN_VERSION))
return None
# Download eBook:
print("{0} v{1}: Loading book from {2}".format(PLUGIN_NAME, PLUGIN_VERSION, download_url))
book_content = sendHTTPRequest(download_url)
filetype = ".bin"
if (book_content.startswith(b"PK")):
print("That's a ZIP file -> EPUB")
filetype = ".epub"
elif (book_content.startswith(b"%PDF")):
print("That's a PDF file")
filetype = ".pdf"
filename = self.temporary_file(filetype).name
author = "None"
title = "None"
try:
title = metadata_node.find("./%s" % (adDC("title"))).text
author = metadata_node.find("./%s" % (adDC("creator"))).text
title = title.replace("(", "").replace(")", "").replace("/", "")
author = author.replace("(", "").replace(")", "").replace("/", "")
except:
pass
# Store book:
f = open(filename, "wb")
f.write(book_content)
f.close()
if filetype == ".epub":
# Store EPUB rights / encryption stuff
zf = zipfile.ZipFile(filename, "a")
zf.writestr("META-INF/rights.xml", rights_xml_str)
zf.close()
print("{0} v{1}: File successfully fulfilled ...".format(PLUGIN_NAME, PLUGIN_VERSION))
return filename
elif filetype == ".pdf":
print("{0} v{1}: Downloaded PDF, adding encryption config ...".format(PLUGIN_NAME, PLUGIN_VERSION))
pdf_tmp_file = self.temporary_file(filetype).name
patch_drm_into_pdf(filename, prepare_string_from_xml(rights_xml_str, title, author), pdf_tmp_file)
print("{0} v{1}: File successfully fulfilled ...".format(PLUGIN_NAME, PLUGIN_VERSION))
return pdf_tmp_file
else:
print("{0} v{1}: Error: Unsupported file type ...".format(PLUGIN_NAME, PLUGIN_VERSION))
return None
def run(self, path_to_ebook: str):
# This code gets called by Calibre with a path to the new book file.
# We need to check if it's an ACSM file
print("{0} v{1}: Trying to parse file {2}".format(PLUGIN_NAME, PLUGIN_VERSION, os.path.basename(path_to_ebook)))
ext = os.path.splitext(path_to_ebook)[1].lower()
if (ext != ".acsm"):
print("{0} v{1}: That's not an ACSM, returning (is {2} instead)... ".format(PLUGIN_NAME, PLUGIN_VERSION, ext))
return path_to_ebook
# That's an ACSM.
# We would fulfill this now, but first perform some sanity checks ...
if not self.ADE_sanity_check():
print("{0} v{1}: ADE auth is missing or broken ".format(PLUGIN_NAME, PLUGIN_VERSION))
return path_to_ebook
print("{0} v{1}: Try to fulfill ...".format(PLUGIN_NAME, PLUGIN_VERSION))
try:
from calibre_plugins.deacsm.libadobe import sendHTTPRequest
from calibre_plugins.deacsm.libadobeFulfill import buildRights, fulfill
except:
try:
from libadobe import sendHTTPRequest
from libadobeFulfill import buildRights, fulfill
except:
print("{0} v{1}: Error while importing Fulfillment stuff".format(PLUGIN_NAME, PLUGIN_VERSION))
traceback.print_exc()
success, replyData = fulfill(path_to_ebook)
if (success is False):
print("{0} v{1}: Hey, that didn't work: \n".format(PLUGIN_NAME, PLUGIN_VERSION) + replyData)
else:
print("{0} v{1}: Downloading book ...".format(PLUGIN_NAME, PLUGIN_VERSION))
rpl = self.download(replyData)
if (rpl is not None):
# Got a file
# Because Calibre still thinks this is an ACSM file (not an EPUB)
# it will not run other plugins like Alf / DeDRM.
# So we have to manually check if it's installed,
# and if it is, run it to remove DRM.
try:
from calibre.customize.ui import _initialized_plugins, is_disabled
for plugin in _initialized_plugins:
if (plugin.name == "DeDRM" and not is_disabled(plugin)):
print("{0} v{1}: Executing DeDRM plugin ...".format(PLUGIN_NAME, PLUGIN_VERSION))
return plugin.run(rpl)
except:
print("{0} v{1}: Error while checking for DeDRM plugin.".format(PLUGIN_NAME, PLUGIN_VERSION))
pass
# Looks like DeDRM is not installed, return book with DRM.
return rpl
return path_to_ebook