Merge 060ea59fb1 into e1b3fa242c

test/test_jsinterp.py

@@ -425,34 +425,6 @@ class TestJSInterpreter(unittest.TestCase):
             self._test(jsi, [''], args=['', '-'])
             self._test(jsi, [], args=['', ''])
 
-    def test_slice(self):
-        self._test('function f(){return [0, 1, 2, 3, 4, 5, 6, 7, 8].slice()}', [0, 1, 2, 3, 4, 5, 6, 7, 8])
-        self._test('function f(){return [0, 1, 2, 3, 4, 5, 6, 7, 8].slice(0)}', [0, 1, 2, 3, 4, 5, 6, 7, 8])
-        self._test('function f(){return [0, 1, 2, 3, 4, 5, 6, 7, 8].slice(5)}', [5, 6, 7, 8])
-        self._test('function f(){return [0, 1, 2, 3, 4, 5, 6, 7, 8].slice(99)}', [])
-        self._test('function f(){return [0, 1, 2, 3, 4, 5, 6, 7, 8].slice(-2)}', [7, 8])
-        self._test('function f(){return [0, 1, 2, 3, 4, 5, 6, 7, 8].slice(-99)}', [0, 1, 2, 3, 4, 5, 6, 7, 8])
-        self._test('function f(){return [0, 1, 2, 3, 4, 5, 6, 7, 8].slice(0, 0)}', [])
-        self._test('function f(){return [0, 1, 2, 3, 4, 5, 6, 7, 8].slice(1, 0)}', [])
-        self._test('function f(){return [0, 1, 2, 3, 4, 5, 6, 7, 8].slice(0, 1)}', [0])
-        self._test('function f(){return [0, 1, 2, 3, 4, 5, 6, 7, 8].slice(3, 6)}', [3, 4, 5])
-        self._test('function f(){return [0, 1, 2, 3, 4, 5, 6, 7, 8].slice(1, -1)}', [1, 2, 3, 4, 5, 6, 7])
-        self._test('function f(){return [0, 1, 2, 3, 4, 5, 6, 7, 8].slice(-1, 1)}', [])
-        self._test('function f(){return [0, 1, 2, 3, 4, 5, 6, 7, 8].slice(-3, -1)}', [6, 7])
-        self._test('function f(){return "012345678".slice()}', '012345678')
-        self._test('function f(){return "012345678".slice(0)}', '012345678')
-        self._test('function f(){return "012345678".slice(5)}', '5678')
-        self._test('function f(){return "012345678".slice(99)}', '')
-        self._test('function f(){return "012345678".slice(-2)}', '78')
-        self._test('function f(){return "012345678".slice(-99)}', '012345678')
-        self._test('function f(){return "012345678".slice(0, 0)}', '')
-        self._test('function f(){return "012345678".slice(1, 0)}', '')
-        self._test('function f(){return "012345678".slice(0, 1)}', '0')
-        self._test('function f(){return "012345678".slice(3, 6)}', '345')
-        self._test('function f(){return "012345678".slice(1, -1)}', '1234567')
-        self._test('function f(){return "012345678".slice(-1, 1)}', '')
-        self._test('function f(){return "012345678".slice(-3, -1)}', '67')
-
 
 if __name__ == '__main__':
     unittest.main()

test/test_youtube_signature.py

@@ -174,14 +174,6 @@ _NSIG_TESTS = [
         'https://www.youtube.com/s/player/5604538d/player_ias.vflset/en_US/base.js',
         '7X-he4jjvMx7BCX', 'sViSydX8IHtdWA',
     ),
-    (
-        'https://www.youtube.com/s/player/20dfca59/player_ias.vflset/en_US/base.js',
-        '-fLCxedkAk4LUTK2', 'O8kfRq1y1eyHGw',
-    ),
-    (
-        'https://www.youtube.com/s/player/b12cc44b/player_ias.vflset/en_US/base.js',
-        'keLa5R2U00sR9SQK', 'N1OGyujjEwMnLw',
-    ),
 ]
 
 

youtube_dl/extractor/youtube.py

@@ -1659,46 +1659,17 @@ class YoutubeIE(YoutubeBaseInfoExtractor):
     def _extract_n_function_name(self, jscode):
         func_name, idx = self._search_regex(
             # new: (b=String.fromCharCode(110),c=a.get(b))&&c=nfunc[idx](c)
-            # or:  (b="nn"[+a.D],c=a.get(b))&&(c=nfunc[idx](c)
+            # or:  (b="nn"[+a.D],c=a.get(b))&&(c=nfunc[idx](c)s
-            # or:  (PL(a),b=a.j.n||null)&&(b=nfunc[idx](b)
+            # old: .get("n"))&&(b=nfunc[idx](b)
-            # or:  (b="nn"[+a.D],vL(a),c=a.j[b]||null)&&(c=narray[idx](c),a.set(b,c),narray.length||nfunc("")
+            # older: .get("n"))&&(b=nfunc(b)
-            # old: (b=a.get("n"))&&(b=nfunc[idx](b)(?P<c>[a-z])\s*=\s*[a-z]\s*
-            # older: (b=a.get("n"))&&(b=nfunc(b)
             r'''(?x)
-                \((?:[\w$()\s]+,)*?\s*      # (
+                (?:\(\s*(?P<b>[a-z])\s*=\s*(?:
-                (?P<b>[a-z])\s*=\s*         # b=
+                    String\s*\.\s*fromCharCode\s*\(\s*110\s*\)|
-                (?:
+                    "n+"\[\s*\+?s*[\w$.]+\s*]
-                    (?:                     # expect ,c=a.get(b) (etc)
+                )\s*,(?P<c>[a-z])\s*=\s*[a-z]\s*)?
-                        String\s*\.\s*fromCharCode\s*\(\s*110\s*\)|
+                \.\s*get\s*\(\s*(?(b)(?P=b)|"n{1,2}")(?:\s*\)){2}\s*&&\s*\(\s*(?(c)(?P=c)|b)\s*=\s*
-                        "n+"\[\s*\+?s*[\w$.]+\s*]
+                (?P<nfunc>[a-zA-Z_$][\w$]*)(?:\s*\[(?P<idx>\d+)\])?\s*\(\s*[\w$]+\s*\)
-                    )\s*(?:,[\w$()\s]+(?=,))*|
+            ''', jscode, 'Initial JS player n function name', group=('nfunc', 'idx'))
-                       (?P<old>[\w$]+)      # a (old[er])
-                   )\s*
-                   (?(old)
-                                            # b.get("n")
-                       (?:\.\s*[\w$]+\s*|\[\s*[\w$]+\s*]\s*)*?
-                       (?:\.\s*n|\[\s*"n"\s*]|\.\s*get\s*\(\s*"n"\s*\))
-                       |                    # ,c=a.get(b)
-                       ,\s*(?P<c>[a-z])\s*=\s*[a-z]\s*
-                       (?:\.\s*[\w$]+\s*|\[\s*[\w$]+\s*]\s*)*?
-                       (?:\[\s*(?P=b)\s*]|\.\s*get\s*\(\s*(?P=b)\s*\))
-                   )
-                                            # interstitial junk
-                   \s*(?:\|\|\s*null\s*)?(?:\)\s*)?&&\s*(?:\(\s*)?
-               (?(c)(?P=c)|(?P=b))\s*=\s*   # [c|b]=
-                                            # nfunc|nfunc[idx]
-                   (?P<nfunc>[a-zA-Z_$][\w$]*)(?:\s*\[(?P<idx>\d+)\])?\s*\(\s*[\w$]+\s*\)
-            ''', jscode, 'Initial JS player n function name', group=('nfunc', 'idx'),
-            default=(None, None))
-        # thx bashonly: yt-dlp/yt-dlp/pull/10611
-        if not func_name:
-            self.report_warning('Falling back to generic n function search')
-            return self._search_regex(
-                r'''(?xs)
-                    (?:(?<=[^\w$])|^)       # instead of \b, which ignores $
-                    (?P<name>(?!\d)[a-zA-Z\d_$]+)\s*=\s*function\((?!\d)[a-zA-Z\d_$]+\)
-                    \s*\{(?:(?!};).)+?["']enhanced_except_
-                ''', jscode, 'Initial JS player n function name', group='name')
         if not idx:
             return func_name
 

youtube_dl/jsinterp.py

@@ -925,16 +925,9 @@ class JSInterpreter(object):
                     obj.reverse()
                     return obj
                 elif member == 'slice':
-                    assertion(isinstance(obj, (list, compat_str)), 'must be applied on a list or string')
+                    assertion(isinstance(obj, list), 'must be applied on a list')
-                    # From [1]:
+                    assertion(len(argvals) == 1, 'takes exactly one argument')
-                    # .slice() - like [:]
+                    return obj[argvals[0]:]
-                    # .slice(n) - like [n:] (not [slice(n)]
-                    # .slice(m, n) - like [m:n] or [slice(m, n)]
-                    # [1] https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/Array/slice
-                    assertion(len(argvals) <= 2, 'takes between 0 and 2 arguments')
-                    if len(argvals) < 2:
-                        argvals += (None,)
-                    return obj[slice(*argvals)]
                 elif member == 'splice':
                     assertion(isinstance(obj, list), 'must be applied on a list')
                     assertion(argvals, 'takes one or more arguments')