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[dependencies] Standardize Cryptodome imports

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pukkandan 2023-02-07 03:22:29 +05:30
parent 754c84e2e4
commit f6a765ceb5
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9 changed files with 74 additions and 69 deletions
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6
test/test_aes.py
View File

@ -26,7 +26,7 @@ from yt_dlp.aes import (
key_expansion,
pad_block,
)
from yt_dlp.dependencies import Cryptodome_AES
from yt_dlp.dependencies import Cryptodome
from yt_dlp.utils import bytes_to_intlist, intlist_to_bytes
# the encrypted data can be generate with 'devscripts/generate_aes_testdata.py'
@ -48,7 +48,7 @@ class TestAES(unittest.TestCase):
data = b'\x97\x92+\xe5\x0b\xc3\x18\x91ky9m&\xb3\xb5@\xe6\x27\xc2\x96.\xc8u\x88\xab9-[\x9e|\xf1\xcd'
decrypted = intlist_to_bytes(aes_cbc_decrypt(bytes_to_intlist(data), self.key, self.iv))
self.assertEqual(decrypted.rstrip(b'\x08'), self.secret_msg)
if Cryptodome_AES:
if Cryptodome:
decrypted = aes_cbc_decrypt_bytes(data, intlist_to_bytes(self.key), intlist_to_bytes(self.iv))
self.assertEqual(decrypted.rstrip(b'\x08'), self.secret_msg)
@ -78,7 +78,7 @@ class TestAES(unittest.TestCase):
decrypted = intlist_to_bytes(aes_gcm_decrypt_and_verify(
bytes_to_intlist(data), self.key, bytes_to_intlist(authentication_tag), self.iv[:12]))
self.assertEqual(decrypted.rstrip(b'\x08'), self.secret_msg)
if Cryptodome_AES:
if Cryptodome:
decrypted = aes_gcm_decrypt_and_verify_bytes(
data, intlist_to_bytes(self.key), authentication_tag, intlist_to_bytes(self.iv[:12]))
self.assertEqual(decrypted.rstrip(b'\x08'), self.secret_msg)

3
test/test_compat.py
View File

@ -31,6 +31,9 @@ class TestCompat(unittest.TestCase):
# TODO: Test submodule
# compat.asyncio.events # Must not raise error
with self.assertWarns(DeprecationWarning):
compat.compat_pycrypto_AES # Must not raise error
def test_compat_expanduser(self):
old_home = os.environ.get('HOME')
test_str = R'C:\Documents and Settings\тест\Application Data'

8
yt_dlp/aes.py
View File

@ -2,17 +2,17 @@ import base64
from math import ceil
from .compat import compat_ord
from .dependencies import Cryptodome_AES
from .dependencies import Cryptodome
from .utils import bytes_to_intlist, intlist_to_bytes
if Cryptodome_AES:
if Cryptodome:
def aes_cbc_decrypt_bytes(data, key, iv):
""" Decrypt bytes with AES-CBC using pycryptodome """
return Cryptodome_AES.new(key, Cryptodome_AES.MODE_CBC, iv).decrypt(data)
return Cryptodome.Cipher.AES.new(key, Cryptodome.Cipher.AES.MODE_CBC, iv).decrypt(data)
def aes_gcm_decrypt_and_verify_bytes(data, key, tag, nonce):
""" Decrypt bytes with AES-GCM using pycryptodome """
return Cryptodome_AES.new(key, Cryptodome_AES.MODE_GCM, nonce).decrypt_and_verify(data, tag)
return Cryptodome.Cipher.AES.new(key, Cryptodome.Cipher.AES.MODE_GCM, nonce).decrypt_and_verify(data, tag)
else:
def aes_cbc_decrypt_bytes(data, key, iv):

16
yt_dlp/compat/compat_utils.py
View File

@ -10,16 +10,12 @@ _Package = collections.namedtuple('Package', ('name', 'version'))
def get_package_info(module):
parent = module.__name__.split('.')[0]
parent_module = None
with contextlib.suppress(ImportError):
parent_module = importlib.import_module(parent)
for attr in ('__version__', 'version_string', 'version'):
version = getattr(parent_module, attr, None)
if version is not None:
break
return _Package(getattr(module, '_yt_dlp__identifier', parent), str(version))
return _Package(
name=getattr(module, '_yt_dlp__identifier', module.__name__),
version=str(next(filter(None, (
getattr(module, attr, None)
for attr in ('__version__', 'version_string', 'version')
)), None)))
def _is_package(module):

38
yt_dlp/dependencies/Cryptodome.py Normal file
View File

@ -0,0 +1,38 @@
import importlib
from ..compat import functools
from ..compat.compat_utils import EnhancedModule, passthrough_module
EnhancedModule(__name__)
try:
import Cryptodome as _parent
except ImportError:
try:
import Crypto as _parent
except (ImportError, SyntaxError): # Old Crypto gives SyntaxError in newer Python
_parent = EnhancedModule('Cryptodome')
__bool__ = lambda: False
@functools.cache
def __getattr__(name):
try:
submodule = importlib.import_module(f'.{name}', _parent.__name__)
except ImportError:
return getattr(_parent, name)
return passthrough_module(f'{__name__}.{name}', submodule)
@property
@functools.cache
def _yt_dlp__identifier():
if _parent.__name__ == 'Crypto':
from Crypto.Cipher import AES
try:
# In pycrypto, mode defaults to ECB. See:
# https://www.pycryptodome.org/en/latest/src/vs_pycrypto.html#:~:text=not%20have%20ECB%20as%20default%20mode
AES.new(b'abcdefghijklmnop')
except TypeError:
return 'pycrypto'
return _parent.__name__

26
yt_dlp/dependencies.py → yt_dlp/dependencies/__init__.py
View File

@ -23,24 +23,6 @@ else:
certifi = None
try:
from Cryptodome.Cipher import AES as Cryptodome_AES
except ImportError:
try:
from Crypto.Cipher import AES as Cryptodome_AES
except (ImportError, SyntaxError): # Old Crypto gives SyntaxError in newer Python
Cryptodome_AES = None
else:
try:
# In pycrypto, mode defaults to ECB. See:
# https://www.pycryptodome.org/en/latest/src/vs_pycrypto.html#:~:text=not%20have%20ECB%20as%20default%20mode
Cryptodome_AES.new(b'abcdefghijklmnop')
except TypeError:
pass
else:
Cryptodome_AES._yt_dlp__identifier = 'pycrypto'
try:
import mutagen
except ImportError:
@ -84,12 +66,16 @@ else:
xattr._yt_dlp__identifier = 'pyxattr'
from . import Cryptodome
all_dependencies = {k: v for k, v in globals().items() if not k.startswith('_')}
available_dependencies = {k: v for k, v in all_dependencies.items() if v}
# Deprecated
Cryptodome_AES = Cryptodome.Cipher.AES if Cryptodome else None
__all__ = [
'all_dependencies',
'available_dependencies',

4
yt_dlp/downloader/hls.py
View File

@ -7,7 +7,7 @@ from . import get_suitable_downloader
from .external import FFmpegFD
from .fragment import FragmentFD
from .. import webvtt
from ..dependencies import Cryptodome_AES
from ..dependencies import Cryptodome
from ..utils import bug_reports_message, parse_m3u8_attributes, update_url_query
@ -63,7 +63,7 @@ class HlsFD(FragmentFD):
can_download, message = self.can_download(s, info_dict, self.params.get('allow_unplayable_formats')), None
if can_download:
has_ffmpeg = FFmpegFD.available()
no_crypto = not Cryptodome_AES and '#EXT-X-KEY:METHOD=AES-128' in s
no_crypto = not Cryptodome and '#EXT-X-KEY:METHOD=AES-128' in s
if no_crypto and has_ffmpeg:
can_download, message = False, 'The stream has AES-128 encryption and pycryptodomex is not available'
elif no_crypto:

16
yt_dlp/extractor/bilibili.py
View File

@ -6,6 +6,7 @@ import urllib.error
import urllib.parse
from .common import InfoExtractor, SearchInfoExtractor
from ..dependencies import Cryptodome
from ..utils import (
ExtractorError,
GeoRestrictedError,
@ -893,22 +894,15 @@ class BiliIntlBaseIE(InfoExtractor):
}
def _perform_login(self, username, password):
try:
from Cryptodome.PublicKey import RSA
from Cryptodome.Cipher import PKCS1_v1_5
except ImportError:
try:
from Crypto.PublicKey import RSA
from Crypto.Cipher import PKCS1_v1_5
except ImportError:
raise ExtractorError('pycryptodomex not found. Please install', expected=True)
if not Cryptodome:
raise ExtractorError('pycryptodomex not found. Please install', expected=True)
key_data = self._download_json(
'https://passport.bilibili.tv/x/intl/passport-login/web/key?lang=en-US', None,
note='Downloading login key', errnote='Unable to download login key')['data']
public_key = RSA.importKey(key_data['key'])
password_hash = PKCS1_v1_5.new(public_key).encrypt((key_data['hash'] + password).encode('utf-8'))
public_key = Cryptodome.PublicKey.RSA.importKey(key_data['key'])
password_hash = Cryptodome.Cipher.PKCS1_v1_5.new(public_key).encrypt((key_data['hash'] + password).encode('utf-8'))
login_post = self._download_json(
'https://passport.bilibili.tv/x/intl/passport-login/web/login/password?lang=en-US', None, data=urlencode_postdata({
'username': username,

26
yt_dlp/extractor/ivi.py
View File

@ -2,11 +2,8 @@ import json
import re
from .common import InfoExtractor
from ..utils import (
ExtractorError,
int_or_none,
qualities,
)
from ..dependencies import Cryptodome
from ..utils import ExtractorError, int_or_none, qualities
class IviIE(InfoExtractor):
@ -94,18 +91,8 @@ class IviIE(InfoExtractor):
for site in (353, 183):
content_data = (data % site).encode()
if site == 353:
try:
from Cryptodome.Cipher import Blowfish
from Cryptodome.Hash import CMAC
pycryptodome_found = True
except ImportError:
try:
from Crypto.Cipher import Blowfish
from Crypto.Hash import CMAC
pycryptodome_found = True
except ImportError:
pycryptodome_found = False
continue
if not Cryptodome:
continue
timestamp = (self._download_json(
self._LIGHT_URL, video_id,
@ -118,7 +105,8 @@ class IviIE(InfoExtractor):
query = {
'ts': timestamp,
'sign': CMAC.new(self._LIGHT_KEY, timestamp.encode() + content_data, Blowfish).hexdigest(),
'sign': Cryptodome.Hash.CMAC.new(self._LIGHT_KEY, timestamp.encode() + content_data,
Cryptodome.Cipher.Blowfish).hexdigest(),
}
else:
query = {}
@ -138,7 +126,7 @@ class IviIE(InfoExtractor):
extractor_msg = 'Video %s does not exist'
elif site == 353:
continue
elif not pycryptodome_found:
elif not Cryptodome:
raise ExtractorError('pycryptodomex not found. Please install', expected=True)
elif message:
extractor_msg += ': ' + message