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[YouTube] Improve nsig function name extraction 

Fixes player b7910ca8, using `,` vs `;`
See https://github.com/ytdl-org/youtube-dl/issues/32292#issuecomment-1602231170

Co-authored-by: dirkf
pull/29996/merge
pukkandan 2023-06-22 13:23:31 +05:30 committed by dirkf
parent 07af47960f
commit 9112e668a5
2 changed files with 16 additions and 14 deletions
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11
test/test_youtube_signature.py
View File

@ -63,11 +63,6 @@ _SIG_TESTS = [
'https://s.ytimg.com/yts/jsbin/html5player-en_US-vflKjOTVq/html5player.js',
'312AA52209E3623129A412D56A40F11CB0AF14AE.3EE09501CB14E3BCDC3B2AE808BF3F1D14E7FBF12',
'112AA5220913623229A412D56A40F11CB0AF14AE.3EE0950FCB14EEBCDC3B2AE808BF331D14E7FBF3',
),
(
'https://www.youtube.com/s/player/6ed0d907/player_ias.vflset/en_US/base.js',
'2aq0aqSyOoJXtK73m-uME_jv7-pT15gOFC02RFkGMqWpzEICs69VdbwQ0LDp1v7j8xx92efCJlYFYb1sUkkBSPOlPmXgIARw8JQ0qOAOAA',
'AOq0QJ8wRAIgXmPlOPSBkkUs1bYFYlJCfe29xx8j7v1pDL2QwbdV96sCIEzpWqMGkFR20CFOg51Tp-7vj_EMu-m37KtXJoOySqa0',
)
]
@ -157,8 +152,8 @@ _NSIG_TESTS = [
'qO0NiMtYQ7TeJnfFG2', 'k9cuJDHNS5O7kQ',
),
(
'https://www.youtube.com/s/player/8c7583ff/player_ias.vflset/en_US/base.js',
'E2AQVN6y_zM7uN9w8z', '9A2dbY5GDZrt9A',
'https://www.youtube.com/s/player/b7910ca8/player_ias.vflset/en_US/base.js',
'_hXMCwMt9qE310D', 'LoZMgkkofRMCZQ',
),
]
@ -236,7 +231,7 @@ def n_sig(jscode, sig_input):
make_sig_test = t_factory(
'signature', signature, re.compile(r'(?s).*(?:-|/player/)(?P<id>[a-zA-Z0-9_-]+)(?:/.+\.js|(?:/watch_as3|/html5player)?\.[a-z]+)$'))
'signature', signature, re.compile(r'.*-(?P<id>[a-zA-Z0-9_-]+)(?:/watch_as3|/html5player)?\.[a-z]+$'))
for test_spec in _SIG_TESTS:
make_sig_test(*test_spec)

19
youtube_dl/extractor/youtube.py
View File

@ -1623,15 +1623,22 @@ class YoutubeIE(YoutubeBaseInfoExtractor):
nfunc, idx = re.match(target, nfunc_and_idx).group('nfunc', 'idx')
if not idx:
return nfunc
VAR_RE_TMPL = r'var\s+%s\s*=\s*(?P<name>\[(?P<alias>%s)\])[;,]'
note = 'Initial JS player n function {0} (%s[%s])' % (nfunc, idx)
def search_function_code(needle, group):
return self._search_regex(
VAR_RE_TMPL % (re.escape(nfunc), needle), jscode,
note.format(group), group=group)
if int_or_none(idx) == 0:
real_nfunc = self._search_regex(
r'var %s\s*=\s*\[([a-zA-Z_$][\w$]*)\];' % (re.escape(nfunc), ), jscode,
'Initial JS player n function alias ({nfunc}[{idx}])'.format(**locals()))
real_nfunc = search_function_code(r'[a-zA-Z_$][\w$]*', group='alias')
if real_nfunc:
return real_nfunc
return self._parse_json(self._search_regex(
r'var %s\s*=\s*(\[.+?\]);' % (re.escape(nfunc), ), jscode,
'Initial JS player n function name ({nfunc}[{idx}])'.format(**locals())), nfunc, transform_source=js_to_json)[int(idx)]
return self._parse_json(
search_function_code('.+?', group='name'),
nfunc, transform_source=js_to_json)[int(idx)]
def _extract_n_function(self, video_id, player_url):
player_id = self._extract_player_info(player_url)