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660 lines
18 KiB
Python
660 lines
18 KiB
Python
#!/usr/bin/env python3
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# -*- coding: utf-8 -*-
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'''
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Helper library with code needed for Adobe stuff.
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'''
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from uuid import getnode
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import sys, os, hashlib, base64
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import ssl
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try:
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import urllib.request as ulib
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import urllib.error as uliberror
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except:
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import urllib2 as ulib
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import urllib2 as uliberror
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from datetime import datetime, timedelta
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from lxml import etree
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try:
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from Cryptodome import Random
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from Cryptodome.Cipher import AES
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from Cryptodome.Hash import SHA
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except ImportError:
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# Some distros still ship Crypto
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from Crypto import Random
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from Crypto.Cipher import AES
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from Crypto.Hash import SHA
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#@@CALIBRE_COMPAT_CODE@@
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from customRSA import CustomRSA
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from oscrypto import keys
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from oscrypto.asymmetric import dump_certificate, dump_private_key
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VAR_ACS_SERVER_HTTP = "http://adeactivate.adobe.com/adept"
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VAR_ACS_SERVER_HTTPS = "https://adeactivate.adobe.com/adept"
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FILE_DEVICEKEY = "devicesalt"
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FILE_DEVICEXML = "device.xml"
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FILE_ACTIVATIONXML = "activation.xml"
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# Lists of different ADE "versions" we know about
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VAR_VER_SUPP_CONFIG_NAMES = [ "ADE 1.7.2", "ADE 2.0.1", "ADE 3.0.1", "ADE 4.0.3", "ADE 4.5.10", "ADE 4.5.11" ]
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VAR_VER_SUPP_VERSIONS = [ "ADE WIN 9,0,1131,27", "2.0.1.78765", "3.0.1.91394", "4.0.3.123281",
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"com.adobe.adobedigitaleditions.exe v4.5.10.186048",
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"com.adobe.adobedigitaleditions.exe v4.5.11.187303" ]
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VAR_VER_HOBBES_VERSIONS = [ "9.0.1131.27", "9.3.58046", "10.0.85385", "12.0.123217", "12.5.4.186049", "12.5.4.187298" ]
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VAR_VER_OS_IDENTIFIERS = [ "Windows Vista", "Windows Vista", "Windows 8", "Windows 8", "Windows 8", "Windows 8" ]
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# "Missing" versions:
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# 1.7.1, 2.0, 3.0, 4.0, 4.0.1, 4.0.2, 4.5 to 4.5.9
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# 4.5.7.179634
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# This is a list of ALL versions we know (and can potentially use if present in a config file).
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# Must have the same length / size as the four lists above.
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VAR_VER_BUILD_IDS = [ 1131, 78765, 91394, 123281, 186048, 187303 ]
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# Build ID 185749 also exists, that's a different (older) variant of 4.5.10.
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# This is a list of versions that can be used for new authorizations:
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VAR_VER_ALLOWED_BUILD_IDS_AUTHORIZE = [ 78765, 91394, 123281, 187303 ]
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# This is a list of versions to be displayed in the version changer.
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VAR_VER_ALLOWED_BUILD_IDS_SWITCH_TO = [ 1131, 78765, 91394, 123281, 187303 ]
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# Versions >= this one are using HTTPS
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# According to changelogs, this is implemented as of ADE 4.0.1 - no idea what build ID that is.
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VAR_VER_NEED_HTTPS_BUILD_ID_LIMIT = 123281
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# Versions >= this are using a different order for the XML elements in a FulfillmentNotification.
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# This doesn't matter for fulfillment at all, but I want to emulate ADE as accurately as possible.
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# Implemented as of ADE 4.0.0, no idea what exact build number that is.
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VAR_VER_USE_DIFFERENT_NOTIFICATION_XML_ORDER = 123281
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# Default build ID to use - ADE 2.0.1
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VAR_VER_DEFAULT_BUILD_ID = 78765
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def are_ade_version_lists_valid():
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# These five lists MUST all have the same amount of elements.
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# Otherwise that will cause all kinds of issues.
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fail = False
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if len(VAR_VER_SUPP_CONFIG_NAMES) != len(VAR_VER_SUPP_VERSIONS):
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fail = True
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if len(VAR_VER_SUPP_CONFIG_NAMES) != len(VAR_VER_HOBBES_VERSIONS):
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fail = True
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if len(VAR_VER_SUPP_CONFIG_NAMES) != len(VAR_VER_OS_IDENTIFIERS):
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fail = True
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if len(VAR_VER_SUPP_CONFIG_NAMES) != len(VAR_VER_BUILD_IDS):
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fail = True
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if fail:
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print("Internal error in ACSM Input: Mismatched version list lenghts.")
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print("This should never happen, please open a bug report.")
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return False
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return True
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devkey_bytes = None
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def get_devkey_path():
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global FILE_DEVICEKEY
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return FILE_DEVICEKEY
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def get_device_path():
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global FILE_DEVICEXML
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return FILE_DEVICEXML
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def get_activation_xml_path():
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global FILE_ACTIVATIONXML
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return FILE_ACTIVATIONXML
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def update_account_path(folder_path):
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# type: (str) -> None
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global FILE_DEVICEKEY, FILE_DEVICEXML, FILE_ACTIVATIONXML
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FILE_DEVICEKEY = os.path.join(folder_path, "devicesalt")
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FILE_DEVICEXML = os.path.join(folder_path, "device.xml")
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FILE_ACTIVATIONXML = os.path.join(folder_path, "activation.xml")
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def createDeviceKeyFile():
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# Original implementation: Device::createDeviceKeyFile()
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DEVICE_KEY_SIZE = 16
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global devkey_bytes
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devkey_bytes = Random.get_random_bytes(DEVICE_KEY_SIZE)
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f = open(FILE_DEVICEKEY, "wb")
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f.write(devkey_bytes)
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f.close()
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def int_to_bytes(value, length, big_endian = True):
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# Helper function for Python2 only (big endian)
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# Python3 uses int.to_bytes()
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result = []
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for i in range(0, length):
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result.append(value >> (i * 8) & 0xff)
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if big_endian:
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result.reverse()
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return result
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def get_mac_address():
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mac1 = getnode()
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mac2 = getnode()
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if (mac1 != mac2) or ((mac1 >> 40) % 2):
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if sys.version_info[0] >= 3:
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return bytes([1, 2, 3, 4, 5, 0])
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else:
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return bytearray([1, 2, 3, 4, 5, 0])
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if sys.version_info[0] >= 3:
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return mac1.to_bytes(6, byteorder='big')
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return int_to_bytes(mac1, 6)
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def makeSerial(random):
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# type: (bool) -> str
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# Original implementation: std::string Device::makeSerial(bool random)
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# It doesn't look like this implementation results in the same fingerprint Adobe is using in ADE.
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# Given that Adobe only ever sees the SHA1 hash of this value, that probably doesn't matter.
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sha_out = None
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if not random:
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try:
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# Linux
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uid = os.getuid()
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import pwd
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username = pwd.getpwuid(uid).pw_name.encode("utf-8").decode("latin-1")
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except:
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# Windows
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uid = 1000
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try:
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username = os.getlogin().encode("utf-8").decode("latin-1")
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except:
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import getpass
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username = getpass.getuser().encode("utf-8").decode("latin-1")
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mac_address = get_mac_address()
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dataToHash = "%d:%s:%02x:%02x:%02x:%02x:%02x:%02x\x00" % (uid, username,
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mac_address[0], mac_address[1], mac_address[2],
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mac_address[3], mac_address[4], mac_address[5])
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sha_out = hashlib.sha1(dataToHash.encode('latin-1')).hexdigest().lower()
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else:
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import binascii
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sha_out = binascii.hexlify(Random.get_random_bytes(20)).lower()
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return sha_out
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def makeFingerprint(serial):
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# type: (str) -> str
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# Original implementation: std::string Device::makeFingerprint(const std::string& serial)
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# base64(sha1(serial + privateKey))
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# Fingerprint must be 20 bytes or less.
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global devkey_bytes
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if devkey_bytes is None:
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f = open(FILE_DEVICEKEY, "rb")
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devkey_bytes = f.read()
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f.close()
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str_to_hash = serial + devkey_bytes.decode('latin-1')
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hashed_str = hashlib.sha1(str_to_hash.encode('latin-1')).digest()
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b64str = base64.b64encode(hashed_str)
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return b64str
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############################################## HTTP stuff:
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def sendHTTPRequest_DL2FILE(URL, outputfile):
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# type: (str, str) -> int
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headers = {
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"Accept": "*/*",
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"User-Agent": "book2png",
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# MacOS uses different User-Agent. Good thing we're emulating a Windows client.
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}
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req = ulib.Request(url=URL, headers=headers)
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handler = ulib.urlopen(req)
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chunksize = 16 * 1024
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ret_code = handler.getcode()
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loc = None
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try:
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loc = req.headers.get("Location")
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except:
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pass
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if loc is not None:
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return sendHTTPRequest_DL2FILE(loc)
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if ret_code != 200:
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return ret_code
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with open(outputfile, "wb") as f:
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while True:
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chunk = handler.read(chunksize)
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if not chunk:
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break
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f.write(chunk)
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return 200
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def sendHTTPRequest_getSimple(URL):
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# type: (str) -> str
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headers = {
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"Accept": "*/*",
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"User-Agent": "book2png",
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# MacOS uses different User-Agent. Good thing we're emulating a Windows client.
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}
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# Ignore SSL:
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# It appears as if lots of book distributors have either invalid or expired certs ...
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# No idea how Adobe handles that (pinning?), but we can just ignore SSL errors and continue anyways.
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# Not the best solution, but it works.
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ctx = ssl.create_default_context()
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ctx.check_hostname = False
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ctx.verify_mode = ssl.CERT_NONE
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req = ulib.Request(url=URL, headers=headers)
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handler = ulib.urlopen(req, context=ctx)
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content = handler.read()
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loc = None
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try:
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loc = req.headers.get("Location")
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except:
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pass
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if loc is not None:
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return sendHTTPRequest_getSimple(loc)
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return content
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def sendPOSTHTTPRequest(URL, document, type, returnRC = False):
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# type: (str, bytes, str, bool) -> str
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headers = {
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"Accept": "*/*",
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"User-Agent": "book2png",
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# MacOS uses different User-Agent. Good thing we're emulating a Windows client.
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"Content-Type": type
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}
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# Ignore SSL:
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# It appears as if lots of book distributors have either invalid or expired certs ...
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# No idea how Adobe handles that (pinning?), but we can just ignore SSL errors and continue anyways.
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# Not the best solution, but it works.
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ctx = ssl.create_default_context()
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ctx.check_hostname = False
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ctx.verify_mode = ssl.CERT_NONE
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# Make sure URL has a protocol
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# Some vendors (see issue #22) apparently don't include "http://" in some of their URLs.
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# Python returns an error when it encounters such a URL, so just add that prefix if it's not present.
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if not "://" in URL:
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print("Provider is using malformed URL %s, fixing." % (URL))
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URL = "http://" + URL
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req = ulib.Request(url=URL, headers=headers, data=document)
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try:
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handler = ulib.urlopen(req, context=ctx)
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except uliberror.HTTPError as err:
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# This happens with HTTP 500 and related errors.
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print("Post request caused HTTPError %d" % (err.code))
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if returnRC:
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return err.code, "Post request caused HTTPException"
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else:
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return None
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except uliberror.URLError as err:
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# This happens if the hostname cannot be resolved.
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print("Post request failed with URLError")
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if returnRC:
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return 900, "Post request failed with URLError"
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else:
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return None
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ret_code = handler.getcode()
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if (ret_code == 204 and returnRC):
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return 204, ""
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if (ret_code != 200):
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print("Post request returned something other than 200 - returned %d" % (ret_code))
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content = handler.read()
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loc = None
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try:
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loc = req.headers.get("Location")
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except:
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pass
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if loc is not None:
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return sendPOSTHTTPRequest(loc, document, type, returnRC)
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if returnRC:
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return ret_code, content
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return content
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def sendHTTPRequest(URL):
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# type: (str) -> str
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return sendHTTPRequest_getSimple(URL)
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def sendRequestDocu(document, URL):
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# type: (str, str) -> str
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return sendPOSTHTTPRequest(URL, document.encode("utf-8"), "application/vnd.adobe.adept+xml", False)
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def sendRequestDocuRC(document, URL):
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# type: (str, str) -> str
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return sendPOSTHTTPRequest(URL, document.encode("utf-8"), "application/vnd.adobe.adept+xml", True)
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######### Encryption and signing ###################
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def encrypt_with_device_key(data):
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data = bytearray(data)
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global devkey_bytes
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if devkey_bytes is None:
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f = open(FILE_DEVICEKEY, "rb")
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devkey_bytes = f.read()
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f.close()
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remain = 16
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if (len(data) % 16):
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remain = 16 - (len(data) % 16)
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for _ in range(remain):
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data.append(remain)
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data = bytes(data)
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iv = Random.get_random_bytes(16)
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cip = AES.new(devkey_bytes, AES.MODE_CBC, iv)
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encrypted = cip.encrypt(data)
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res = iv + encrypted
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return res
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def decrypt_with_device_key(data):
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if isinstance(data, str):
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# Python2
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data = bytes(data)
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global devkey_bytes
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if devkey_bytes is None:
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f = open(FILE_DEVICEKEY, "rb")
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devkey_bytes = f.read()
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f.close()
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cip = AES.new(devkey_bytes, AES.MODE_CBC, data[:16])
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decrypted = bytearray(cip.decrypt(data[16:]))
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# Remove padding
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decrypted = decrypted[:-decrypted[-1]]
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return decrypted
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def addNonce():
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# TODO: Update nonce calculation
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# Currently, the plugin always uses the current time, and the counter (tmp) is always 0.
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# What Adobe does instead is save the current time on program start, then increase tmp
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# every time a Nonce is needed.
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dt = datetime.utcnow()
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sec = (dt - datetime(1970,1,1)).total_seconds()
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Ntime = int(sec * 1000)
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# Ntime is now milliseconds since 1970
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# Unixtime to gregorian timestamp
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Ntime += 62167219200000
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# Something is fishy with this tmp value. It usually is 0 in ADE, but not always.
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# I haven't yet figured out what it means ...
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tmp = 0
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if sys.version_info[0] >= 3:
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final = bytearray(Ntime.to_bytes(8, 'little'))
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final.extend(tmp.to_bytes(4, 'little'))
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else:
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final = bytearray(int_to_bytes(Ntime, 8, False))
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final.extend(int_to_bytes(tmp, 4, True))
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ret = ""
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ret += "<adept:nonce>%s</adept:nonce>" % (base64.b64encode(final).decode("utf-8"))
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m10m = dt + timedelta(minutes=10)
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m10m_str = m10m.strftime("%Y-%m-%dT%H:%M:%SZ")
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ret += "<adept:expiration>%s</adept:expiration>" % (m10m_str)
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return ret
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def get_cert_from_pkcs12(_pkcs12, _key):
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_, cert, _ = keys.parse_pkcs12(_pkcs12, _key)
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return dump_certificate(cert, encoding="der")
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def sign_node(node):
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sha_hash = hash_node(node)
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sha_hash = sha_hash.digest()
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# print("Hash is " + sha_hash.hex())
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global devkey_bytes
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global pkcs12
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if devkey_bytes is None:
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f = open(FILE_DEVICEKEY, "rb")
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devkey_bytes = f.read()
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f.close()
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# Get private key
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try:
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activationxml = etree.parse(FILE_ACTIVATIONXML)
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adNS = lambda tag: '{%s}%s' % ('http://ns.adobe.com/adept', tag)
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pkcs12 = activationxml.find("./%s/%s" % (adNS("credentials"), adNS("pkcs12"))).text
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except:
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return None
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my_pkcs12 = base64.b64decode(pkcs12)
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my_priv_key, _, _ = keys.parse_pkcs12(my_pkcs12, base64.b64encode(devkey_bytes))
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my_priv_key = dump_private_key(my_priv_key, None, "der")
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# textbook RSA with that private key
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block = CustomRSA.encrypt_for_adobe_signature(my_priv_key, sha_hash)
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signature = base64.b64encode(block).decode()
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# Debug
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# print("sig is %s\n" % block.hex())
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return signature
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def hash_node(node):
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hash_ctx = SHA.new()
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hash_node_ctx(node, hash_ctx)
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return hash_ctx
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|
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ASN_NONE = 0
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ASN_NS_TAG = 1 # aka "BEGIN_ELEMENT"
|
|
ASN_CHILD = 2 # aka "END_ATTRIBUTES"
|
|
ASN_END_TAG = 3 # aka "END_ELEMENT"
|
|
ASN_TEXT = 4 # aka "TEXT_NODE"
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|
ASN_ATTRIBUTE = 5 # aka "ATTRIBUTE"
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|
|
debug = False
|
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|
|
def hash_node_ctx(node, hash_ctx):
|
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|
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qtag = etree.QName(node.tag)
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|
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if (qtag.localname == "hmac" or qtag.localname == "signature"):
|
|
if (qtag.namespace == "http://ns.adobe.com/adept"):
|
|
# Adobe HMAC and signature are not hashed
|
|
return
|
|
else:
|
|
print("Warning: Found hmac or signature node in unexpected namespace " + qtag.namespace)
|
|
|
|
hash_do_append_tag(hash_ctx, ASN_NS_TAG)
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|
|
|
if qtag.namespace is None:
|
|
hash_do_append_string(hash_ctx, "")
|
|
else:
|
|
hash_do_append_string(hash_ctx, qtag.namespace)
|
|
hash_do_append_string(hash_ctx, qtag.localname)
|
|
|
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|
|
attrKeys = node.keys()
|
|
|
|
# Attributes need to be sorted
|
|
attrKeys.sort()
|
|
# TODO Implement UTF-8 bytewise sorting:
|
|
# "Attributes are sorted first by their namespaces and
|
|
# then by their names; sorting is done bytewise on UTF-8
|
|
# representations."
|
|
|
|
for attribute in attrKeys:
|
|
# Hash all the attributes
|
|
hash_do_append_tag(hash_ctx, ASN_ATTRIBUTE)
|
|
|
|
# Check for element namespace and hash that, if present:
|
|
q_attribute = etree.QName(attribute)
|
|
|
|
# Hash element namespace (usually "")
|
|
# If namespace is none, use "". Else, use namespace.
|
|
hash_do_append_string(hash_ctx, "" if q_attribute.namespace is None else q_attribute.namespace)
|
|
|
|
# Hash (local) name and value
|
|
hash_do_append_string(hash_ctx, q_attribute.localname)
|
|
hash_do_append_string(hash_ctx, node.get(attribute))
|
|
|
|
hash_do_append_tag(hash_ctx, ASN_CHILD)
|
|
|
|
if (node.text is not None):
|
|
# If there's raw text, hash that.
|
|
|
|
# This code block used to just be the following:
|
|
# hash_do_append_tag(hash_ctx, ASN_TEXT)
|
|
# hash_do_append_string(hash_ctx, node.text.strip())
|
|
# though that only works with text nodes < 0x7fff.
|
|
# While I doubt we'll ever encounter text nodes larger than 32k in
|
|
# this application, I want to implement the spec correctly.
|
|
# So there's a loop going over the text, hashing 32k chunks.
|
|
|
|
text = node.text.strip()
|
|
textlen = len(text)
|
|
if textlen > 0:
|
|
done = 0
|
|
remaining = 0
|
|
while True:
|
|
remaining = textlen - done
|
|
if remaining > 0x7fff:
|
|
print("Warning: Hashing text node larger than 32k.")
|
|
print("This usually doesn't happen, and I'm not sure if this is implemented correctly.")
|
|
print("If you run into issues, please open a bug report.")
|
|
remaining = 0x7fff
|
|
|
|
hash_do_append_tag(hash_ctx, ASN_TEXT)
|
|
hash_do_append_string(hash_ctx, text[done:done+remaining])
|
|
|
|
done += remaining
|
|
if done >= textlen:
|
|
break
|
|
|
|
for child in node:
|
|
# If there's child nodes, hash these as well.
|
|
hash_node_ctx(child, hash_ctx)
|
|
|
|
|
|
|
|
hash_do_append_tag(hash_ctx, ASN_END_TAG)
|
|
|
|
|
|
|
|
def hash_do_append_string(hash_ctx, string):
|
|
# type: (SHA.SHA1Hash, str) -> None
|
|
|
|
if sys.version_info[0] >= 3:
|
|
str_bytes = bytes(string, encoding="utf-8")
|
|
else:
|
|
str_bytes = bytes(string)
|
|
|
|
length = len(str_bytes)
|
|
len_upper = int(length / 256)
|
|
len_lower = int(length & 0xFF)
|
|
|
|
hash_do_append_raw_bytes(hash_ctx, [len_upper, len_lower])
|
|
hash_do_append_raw_bytes(hash_ctx, str_bytes)
|
|
|
|
def hash_do_append_tag(hash_ctx, tag):
|
|
# type: (SHA.SHA1Hash, int) -> None
|
|
|
|
if (tag > 5):
|
|
return
|
|
|
|
hash_do_append_raw_bytes(hash_ctx, [tag])
|
|
|
|
def hash_do_append_raw_bytes(hash_ctx, data):
|
|
# type: (SHA.SHA1Hash, bytes) -> None
|
|
hash_ctx.update(bytearray(data))
|