Back-port test_youtube_signature.py from yt-dlp and fix JSInterp accordingly

This commit is contained in:
dirkf 2021-11-27 03:18:29 +00:00
parent 1ca673bd98
commit 9d142109f4
2 changed files with 69 additions and 29 deletions

View File

@ -14,9 +14,10 @@ import string
from test.helper import FakeYDL
from youtube_dl.extractor import YoutubeIE
from youtube_dl.jsinterp import JSInterpreter
from youtube_dl.compat import compat_str, compat_urlretrieve
_TESTS = [
_SIG_TESTS = [
(
'https://s.ytimg.com/yts/jsbin/html5player-vflHOr_nV.js',
86,
@ -64,6 +65,25 @@ _TESTS = [
)
]
_NSIG_TESTS = [
(
'https://www.youtube.com/s/player/9216d1f7/player_ias.vflset/en_US/base.js',
'SLp9F5bwjAdhE9F-', 'gWnb9IK2DJ8Q1w',
),
(
'https://www.youtube.com/s/player/f8cb7a3b/player_ias.vflset/en_US/base.js',
'oBo2h5euWy6osrUt', 'ivXHpm7qJjJN',
),
(
'https://www.youtube.com/s/player/2dfe380c/player_ias.vflset/en_US/base.js',
'oBo2h5euWy6osrUt', '3DIBbn3qdQ',
),
(
'https://www.youtube.com/s/player/f1ca6900/player_ias.vflset/en_US/base.js',
'cu3wyu6LQn2hse', 'jvxetvmlI9AN9Q',
),
]
class TestPlayerInfo(unittest.TestCase):
def test_youtube_extract_player_info(self):
@ -95,35 +115,54 @@ class TestSignature(unittest.TestCase):
os.mkdir(self.TESTDATA_DIR)
def t_factory(name, sig_func, url_pattern):
def make_tfunc(url, sig_input, expected_sig):
m = re.match(r'.*-([a-zA-Z0-9_-]+)(?:/watch_as3|/html5player)?\.[a-z]+$', url)
m = url_pattern.match(url)
assert m, '%r should follow URL format' % url
test_id = m.group(1)
test_id = m.group('id')
def test_func(self):
basename = 'player-%s.js' % test_id
basename = 'player-{0}-{1}.js'.format(name, test_id)
fn = os.path.join(self.TESTDATA_DIR, basename)
if not os.path.exists(fn):
compat_urlretrieve(url, fn)
ydl = FakeYDL()
ie = YoutubeIE(ydl)
with io.open(fn, encoding='utf-8') as testf:
jscode = testf.read()
func = ie._parse_sig_js(jscode)
self.assertEqual(sig_func(jscode, sig_input), expected_sig)
test_func.__name__ = str('test_{0}_js_{1}'.format(name, test_id))
setattr(TestSignature, test_func.__name__, test_func)
return make_tfunc
def signature(jscode, sig_input):
func = YoutubeIE(FakeYDL())._parse_sig_js(jscode)
src_sig = (
compat_str(string.printable[:sig_input])
if isinstance(sig_input, int) else sig_input)
got_sig = func(src_sig)
self.assertEqual(got_sig, expected_sig)
test_func.__name__ = str('test_signature_js_' + test_id)
setattr(TestSignature, test_func.__name__, test_func)
return func(src_sig)
for test_spec in _TESTS:
make_tfunc(*test_spec)
def n_sig(jscode, sig_input):
# Pending implementation of _extract_n_function_name() or similar in
# youtube.py, hard-code here
# funcname = YoutubeIE(FakeYDL())._extract_n_function_name(jscode)
import re
funcname = re.search(r'[=(,&|](\w+)\(\w+\),\w+\.set\("n",', jscode)
funcname = funcname and funcname.group(1)
return JSInterpreter(jscode).call_function(funcname, sig_input)
make_sig_test = t_factory(
'signature', signature, re.compile(r'.*-(?P<id>[a-zA-Z0-9_-]+)(?:/watch_as3|/html5player)?\.[a-z]+$'))
for test_spec in _SIG_TESTS:
make_sig_test(*test_spec)
make_nsig_test = t_factory(
'nsig', n_sig, re.compile(r'.+/player/(?P<id>[a-zA-Z0-9_-]+)/.+.js$'))
for test_spec in _NSIG_TESTS:
make_nsig_test(*test_spec)
if __name__ == '__main__':

View File

@ -9,7 +9,8 @@ from .utils import (
remove_quotes,
)
from .compat import (
compat_collections_abc
compat_collections_abc,
compat_str,
)
MutableMapping = compat_collections_abc.MutableMapping
@ -372,7 +373,7 @@ class JSInterpreter(object):
# nonlocal member
member = nl.member
if variable == 'String':
obj = str
obj = compat_str
elif variable in local_vars:
obj = local_vars[variable]
else:
@ -391,7 +392,7 @@ class JSInterpreter(object):
self.interpret_expression(v, local_vars, allow_recursion)
for v in self._separate(arg_str)]
if obj == str:
if obj == compat_str:
if member == 'fromCharCode':
assertion(argvals, 'takes one or more arguments')
return ''.join(map(chr, argvals))
@ -533,7 +534,7 @@ class JSInterpreter(object):
name = self._named_object(
local_vars,
self.extract_function_from_code(
[str.strip(x) for x in mobj.group('args').split(',')],
[x.strip() for x in mobj.group('args').split(',')],
body, local_vars, *global_stack))
code = code[:start] + name + remaining
return self.build_function(argnames, code, local_vars, *global_stack)