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acsm-calibre-plugin/calibre-plugin/__init__.py
Florian Bach cec56cb9a2 Make Github recognize LICENSE
2022-01-16 10:12:55 +01:00

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#!/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
# v0.0.8: More PDF bugfixes, support unlimited PDF file sizes, tell Calibre ACSMs are books.
# v0.0.9: Add FulfillmentNotification support, add LoanReturn support.
# v0.0.10: Fix nonce calculation, merge PRs #3 and #4 (PyCryptodome stuff)
# v0.0.11: Ignore SSL errors during ACS notify, improve element hashing code,
# improve PassHash support, include UUID in key export filename,
# fix bug that would block other FileTypePlugins
# v0.0.12: Fix Calibre Plugin index / updater
# v0.0.13: v0.0.13 was a development / beta version with lots of different published test
# versions. To make support easier there's no "final" v0.0.13 version. Instead,
# all the changes from the various v0.0.13 beta versions are released with v0.0.14.
# v0.0.14: Add support for emulating multiple ADE versions (1.7.2, 2.0.1, 3.0.1, 4.0.3, 4.5.11),
# add code to import existing activation from ADE (Windows, MacOS or Linux/Wine),
# add code to remove an existing activation from the plugin (Ctrl+Shift+D),
# fix race condition when importing multiple ACSMs simultaneously,
# fix authorization failing with certain non-ASCII characters in username,
# add detailed logging toggle setting, add auto-delete ACSM setting,
# add useful error message for ACSMs with nonstandard download type.
# v0.0.15: Add support for anonymous authorizations, add support for other ID providers,
# fix ACSM files from Google Play books (no metadata node),
# allow converting an anonymous auth to an AdobeID auth,
# update python-cryptography from 3.4.8 to 36.0.1, update python-rsa from 4.7.2 to 4.8.
# Currently in development:
# Ignore fatal HTTP errors and/or a missing or broken server during optional
# fulfillment notifications, allow authorizing an eReader through USB (experimental),
# drop dependencies python-cryptography, python-rsa and python-pyasn1.
# add a ton of testing code, try to prevent AV false-positives.
PLUGIN_NAME = "DeACSM"
PLUGIN_VERSION_TUPLE = (0, 0, 15)
from calibre.customize import FileTypePlugin # type: ignore
__version__ = PLUGIN_VERSION = ".".join([str(x)for x in PLUGIN_VERSION_TUPLE])
from calibre.utils.config import config_dir # type: ignore
from calibre.constants import isosx, iswindows, islinux # type: ignore
import os, shutil, traceback, sys, time, io, random
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:
# Patch Calibre to consider "ACSM" a book. This makes ACSM files show up
# in the "Add Book" file selection, and it also makes the auto-add feature useable.
try:
from calibre.ebooks import BOOK_EXTENSIONS
if ("acsm" not in BOOK_EXTENSIONS):
BOOK_EXTENSIONS.append("acsm")
except:
print("{0} v{1}: Couldn't add ACSM to book extension list:".format(PLUGIN_NAME, PLUGIN_VERSION))
traceback.print_exc()
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)
# Extract new modules
self.moddir = os.path.join(self.maindir,"modules")
if not os.path.exists(self.moddir):
os.mkdir(self.moddir)
# Check if we have a module id:
# Modules will only be extracted if this has changed.
# This A) saves time because we don't extract every time,
# and B) prevents a race condition.
# The compiling scripts need to be adapted to modify
# the module_id.txt in the plugin ZIP every time the
# modules change
try:
ts_file = os.path.join(self.moddir, "module_id.txt")
f = open(ts_file, "r")
id = f.readline().strip()
f.close()
except:
# No timestamp found, probably upgrading from an older version.
id = None
# Check ID file in the plugin ZIP
try:
ts_dict = self.load_resources( ["module_id.txt"] )
id_plugin = ts_dict["module_id.txt"].decode("latin-1").split('\n')[0].strip()
except:
# No timestamp found in the plugin ZIP?
# Assume that I made a mistake bundling the plugin, extract anyways.
id_plugin = None
if id is None or id_plugin is None or id != id_plugin:
print("Module update from \"{0}\" to \"{1}\", extracting ...".format(id, id_plugin))
# Something changed, extract modules.
if os.path.exists(self.moddir):
shutil.rmtree(self.moddir, ignore_errors=True)
rand_path = self.moddir + str(random.randint(0, 1000000000))
# Generate random name so we don't get conflicts with multiple instances of the plugin running at once.
# Hack-y solution, but it should work.
os.mkdir(rand_path)
names = ["oscrypto.zip", "asn1crypto.zip"]
# oscrypto is needed to parse the pkcs12 data from Adobe.
# asn1crypto is a dependency of oscrypto.
lib_dict = self.load_resources(names)
for entry, data in lib_dict.items():
try:
with zipfile.ZipFile(io.BytesIO(data), 'r') as ref:
ref.extractall(rand_path)
except:
print("{0} v{1}: Exception when copying needed library files".format(PLUGIN_NAME, PLUGIN_VERSION))
traceback.print_exc()
pass
if islinux:
# Also extract EXE files needed for WINE ADE key extraction
names = [ "keyextract/decrypt_win32.exe", "keyextract/decrypt_win64.exe" ]
lib_dict = self.load_resources(names)
for entry, data in lib_dict.items():
file_path = os.path.join(rand_path, entry.split('/')[1])
f = open(file_path, "wb")
f.write(data)
f.close()
# Write module ID
if id_plugin is not None:
mod_file = os.path.join(rand_path, "module_id.txt")
f = open(mod_file, "w")
f.write(id_plugin)
f.close()
# Rename temporary path to actual module path so this will be used next time.
os.rename(rand_path, self.moddir)
sys.path.insert(0, os.path.join(self.moddir, "oscrypto"))
sys.path.insert(0, os.path.join(self.moddir, "asn1crypto"))
# Okay, now all the modules are available, import the Adobe modules.
# Account:
try:
from calibre_plugins.deacsm.libadobe import createDeviceKeyFile, update_account_path
from calibre_plugins.deacsm.libadobeAccount import createDeviceFile, createUser, signIn, activateDevice
except:
from libadobe import createDeviceKeyFile, update_account_path
from libadobeAccount import createDeviceFile, createUser, signIn, activateDevice
# Fulfill:
try:
from calibre_plugins.deacsm.libadobe import sendHTTPRequest
from calibre_plugins.deacsm.libadobeFulfill import buildRights, fulfill
except:
from libadobe import sendHTTPRequest
from libadobeFulfill import buildRights, fulfill
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_DL2FILE
from calibre_plugins.deacsm.libadobeFulfill import buildRights, fulfill
except:
from libadobe import sendHTTPRequest_DL2FILE
from libadobeFulfill import buildRights, fulfill
try:
from calibre_plugins.deacsm.libpdf import patch_drm_into_pdf
except:
from libpdf import patch_drm_into_pdf
adobe_fulfill_response = etree.fromstring(replyData)
NSMAP = { "adept" : "http://ns.adobe.com/adept" }
adNS = lambda tag: '{%s}%s' % ('http://ns.adobe.com/adept', tag)
try:
download_url = adobe_fulfill_response.find("./%s/%s/%s" % (adNS("fulfillmentResult"), adNS("resourceItemInfo"), adNS("src"))).text
except:
print("{0} v{1}: FulfillmentResult does not contain the <src> tag. This may be an ACSM with download type 'auth'?".format(PLUGIN_NAME, PLUGIN_VERSION))
print("{0} v{1}: Please open a bug report and attach the ACSM file if you see this message.".format(PLUGIN_NAME, PLUGIN_VERSION))
return None
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))
filename_tmp = self.temporary_file(".blob").name
dl_start_time = int(time.time() * 1000)
ret = sendHTTPRequest_DL2FILE(download_url, filename_tmp)
dl_end_time = int(time.time() * 1000)
print("Download took %d ms (HTTP %d)" % (dl_end_time - dl_start_time, ret))
if (ret != 200):
print("{0} v{1}: Download failed with error {2}".format(PLUGIN_NAME, PLUGIN_VERSION, ret))
return None
filetype = ".bin"
book_content = None
with open(filename_tmp, "rb") as f:
book_content = f.read(10)
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
# Move to file name with matching extension
shutil.move(filename_tmp, filename)
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":
adobe_fulfill_response = etree.fromstring(rights_xml_str)
NSMAP = { "adept" : "http://ns.adobe.com/adept" }
adNS = lambda tag: '{%s}%s' % ('http://ns.adobe.com/adept', tag)
resource = adobe_fulfill_response.find("./%s/%s" % (adNS("licenseToken"), adNS("resource"))).text
print("{0} v{1}: Downloaded PDF, adding encryption config ...".format(PLUGIN_NAME, PLUGIN_VERSION))
pdf_tmp_file = self.temporary_file(filetype).name
ret = patch_drm_into_pdf(filename, rights_xml_str, pdf_tmp_file, resource)
if (ret):
print("{0} v{1}: File successfully fulfilled ...".format(PLUGIN_NAME, PLUGIN_VERSION))
else:
print("{0} v{1}: There was an error patching the PDF file.".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
try:
from calibre_plugins.deacsm.libadobe import are_ade_version_lists_valid
from calibre_plugins.deacsm.libadobeFulfill import fulfill
except:
from libadobe import are_ade_version_lists_valid
from libadobeFulfill import fulfill
if not are_ade_version_lists_valid():
print("{0} v{1}: ADE version list mismatch, please open a bug report.".format(PLUGIN_NAME, PLUGIN_VERSION))
return path_to_ebook
print("{0} v{1}: Try to fulfill ...".format(PLUGIN_NAME, PLUGIN_VERSION))
import calibre_plugins.deacsm.prefs as prefs # type: ignore
deacsmprefs = prefs.DeACSM_Prefs()
success, replyData = fulfill(path_to_ebook, deacsmprefs["notify_fulfillment"])
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 FileTypePlugins that handle EPUB (or PDF) files.
# Loop through all plugins (the list is already sorted by priority),
# then execute all of them that can handle EPUB / PDF.
# if the source file is supposed to be deleted after successful fulfillment,
# this is set to True
# If there's any errors whatsoever during export / plugin execution,
# this will be set back to False to prevent deletion.
delete_src_file = deacsmprefs["delete_acsm_after_fulfill"]
try:
from calibre.customize.ui import _initialized_plugins, is_disabled
from calibre.customize import FileTypePlugin
original_file_for_plugins = rpl
oo, oe = sys.stdout, sys.stderr
for plugin in _initialized_plugins:
#print("{0} v{1}: Plugin '{2}' has prio {3}".format(PLUGIN_NAME, PLUGIN_VERSION, plugin.name, plugin.priority))
# Check if this is a FileTypePlugin
if not isinstance(plugin, FileTypePlugin):
#print("{0} v{1}: Plugin '{2}' is no FileTypePlugin, skipping ...".format(PLUGIN_NAME, PLUGIN_VERSION, plugin.name))
continue
# Check if it's disabled
if is_disabled(plugin):
#print("{0} v{1}: Plugin '{2}' is disabled, skipping ...".format(PLUGIN_NAME, PLUGIN_VERSION, plugin.name))
continue
if plugin.name == self.name:
#print("{0} v{1}: Plugin '{2}' is me - skipping".format(PLUGIN_NAME, PLUGIN_VERSION, plugin.name))
continue
# Check if it's supposed to run on import:
if not plugin.on_import:
#print("{0} v{1}: Plugin '{2}' isn't supposed to run during import, skipping ...".format(PLUGIN_NAME, PLUGIN_VERSION, plugin.name))
continue
# Check filetype
# If neither the book file extension nor "*" is in the plugin,
# don't execute it.
my_file_type = os.path.splitext(rpl)[-1].lower().replace('.', '')
if (not my_file_type in plugin.file_types):
#print("{0} v{1}: Plugin '{2}' doesn't support {3} files, skipping ...".format(PLUGIN_NAME, PLUGIN_VERSION, plugin.name, my_file_type))
continue
if ("acsm" in plugin.file_types or "*" in plugin.file_types):
#print("{0} v{1}: Plugin '{2}' would run anyways, skipping ...".format(PLUGIN_NAME, PLUGIN_VERSION, plugin.name, my_file_type))
continue
print("{0} v{1}: Executing plugin {2} ...".format(PLUGIN_NAME, PLUGIN_VERSION, plugin.name))
plugin.original_path_to_file = original_file_for_plugins
try:
plugin_ret = None
plugin_ret = plugin.run(rpl)
except:
delete_src_file = False
print("{0} v{1}: Running file type plugin failed with traceback:".format(PLUGIN_NAME, PLUGIN_VERSION))
traceback.print_exc(file=oe)
# Restore stdout and stderr, in case a plugin broke them.
sys.stdout, sys.stderr = oo, oe
if plugin_ret is not None:
# If the plugin returned a new path, update that.
print("{0} v{1}: Plugin returned path '{2}', updating.".format(PLUGIN_NAME, PLUGIN_VERSION, plugin_ret))
rpl = plugin_ret
else:
print("{0} v{1}: Plugin returned nothing - skipping".format(PLUGIN_NAME, PLUGIN_VERSION))
except:
delete_src_file = False
print("{0} v{1}: Error while executing other plugins".format(PLUGIN_NAME, PLUGIN_VERSION))
traceback.print_exc()
pass
# If enabled, and if we didn't encounter any errors, delete the source ACSM file.
if delete_src_file:
try:
if os.path.exists(path_to_ebook):
print("{0} v{1}: Deleting existing ACSM file {2} ...".format(PLUGIN_NAME, PLUGIN_VERSION, path_to_ebook))
os.remove(path_to_ebook)
except:
print("{0} v{1}: Failed to delete source ACSM after fulfillment.".format(PLUGIN_NAME, PLUGIN_VERSION))
# Return path - either the original one or the one modified by the other plugins.
return rpl
return path_to_ebook
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