[YouTube] Fix bit-shift coercion for player 9c6dfc4a

test/test_jsinterp.py

@@ -459,6 +459,10 @@ def test_bitwise_operators_typecast(self):
         self._test('function f(){return undefined >> 5}', 0)
         self._test('function f(){return 42 << NaN}', 42)
         self._test('function f(){return 42 << Infinity}', 42)
+        self._test('function f(){return 0.0 << null}', 0)
+        self._test('function f(){return NaN << 42}', 0)
+        self._test('function f(){return "21.9" << 1}', 42)
+        self._test('function f(){return 21 << 4294967297}', 42)
 
     def test_negative(self):
         self._test('function f(){return 2    *    -2.0    ;}', -4)

test/test_youtube_signature.py

@@ -219,6 +219,10 @@
         'https://www.youtube.com/s/player/2f1832d2/player_ias.vflset/en_US/base.js',
         'YWt1qdbe8SAfkoPHW5d', 'RrRjWQOJmBiP',
     ),
+    (
+        'https://www.youtube.com/s/player/9c6dfc4a/player_ias.vflset/en_US/base.js',
+        'jbu7ylIosQHyJyJV', 'uwI0ESiynAmhNg',
+    ),
 ]
 
 

youtube_dl/casefold.py

@@ -10,9 +10,10 @@
 # https://github.com/unicode-org/icu/blob/main/icu4c/source/data/unidata/CaseFolding.txt
 # In case newly foldable Unicode characters are defined, paste the new version
 # of the text inside the ''' marks.
-# The text is expected to have only blank lines andlines with 1st character #,
+# The text is expected to have only blank lines and lines with 1st character #,
 # all ignored, and fold definitions like this:
-# `from_hex_code; space_separated_to_hex_code_list; comment`
+# `from_hex_code; status; space_separated_to_hex_code_list; comment`
+# Only `status` C/F are used.
 
 _map_str = '''
 # CaseFolding-15.0.0.txt
@@ -1657,11 +1658,6 @@ def _parse_unichr(s):
 del _map_str
 
 
-def casefold(s):
+def _casefold(s):
     assert isinstance(s, compat_str)
     return ''.join((_map.get(c, c) for c in s))
-
-
-__all__ = [
-    'casefold',
-]

youtube_dl/compat.py

@@ -44,7 +44,7 @@
     compat_str.casefold
     compat_casefold = lambda s: s.casefold()
 except AttributeError:
-    from .casefold import casefold as compat_casefold
+    from .casefold import _casefold as compat_casefold
 
 try:
     import collections.abc as compat_collections_abc
@@ -3116,17 +3116,21 @@ def compat_kwargs(kwargs):
     compat_kwargs = lambda kwargs: kwargs
 
 
+# compat_numeric_types
 try:
     compat_numeric_types = (int, float, long, complex)
 except NameError:  # Python 3
     compat_numeric_types = (int, float, complex)
 
 
+# compat_integer_types
 try:
     compat_integer_types = (int, long)
 except NameError:  # Python 3
     compat_integer_types = (int, )
 
+# compat_int
+compat_int = compat_integer_types[-1]
 
 if sys.version_info < (2, 7):
     def compat_socket_create_connection(address, timeout, source_address=None):
@@ -3532,6 +3536,7 @@ def compat_datetime_timedelta_total_seconds(td):
     'compat_http_client',
     'compat_http_server',
     'compat_input',
+    'compat_int',
     'compat_integer_types',
     'compat_itertools_count',
     'compat_itertools_zip_longest',

youtube_dl/jsinterp.py

@@ -24,6 +24,8 @@
     compat_collections_chain_map as ChainMap,
     compat_contextlib_suppress,
     compat_filter as filter,
+    compat_int,
+    compat_integer_types,
     compat_itertools_zip_longest as zip_longest,
     compat_map as map,
     compat_numeric_types,
@@ -70,14 +72,27 @@ class JS_Undefined(object):
     pass
 
 
-def _js_bit_op(op):
+def _js_bit_op(op, is_shift=False):
 
-    def zeroise(x):
-        return 0 if x in (None, JS_Undefined, _NaN, _Infinity) else x
+    def zeroise(x, is_shift_arg=False):
+        if isinstance(x, compat_integer_types):
+            return (x % 32) if is_shift_arg else (x & 0xffffffff)
+        try:
+            x = float(x)
+            if is_shift_arg:
+                x = int(x % 32)
+            elif x < 0:
+                x = -compat_int(-x % 0xffffffff)
+            else:
+                x = compat_int(x % 0xffffffff)
+        except (ValueError, TypeError):
+            # also here for int(NaN), including float('inf') % 32
+            x = 0
+        return x
 
     @wraps_op(op)
     def wrapped(a, b):
-        return op(zeroise(a), zeroise(b)) & 0xffffffff
+        return op(zeroise(a), zeroise(b, is_shift)) & 0xffffffff
 
     return wrapped
 
@@ -253,8 +268,8 @@ def _js_typeof(expr):
 # avoid dict to maintain order
 # definition None => Defined in JSInterpreter._operator
 _OPERATORS = (
-    ('>>', _js_bit_op(operator.rshift)),
-    ('<<', _js_bit_op(operator.lshift)),
+    ('>>', _js_bit_op(operator.rshift, True)),
+    ('<<', _js_bit_op(operator.lshift, True)),
     ('+', _js_add),
     ('-', _js_arith_op(operator.sub)),
     ('*', _js_arith_op(operator.mul)),