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synced 2024-09-12 00:29:29 -04:00
[jsinterp] Handle new YT players 113ca41c, c57c113c
* add NaN * allow any white-space character for `after_op` * align with yt-dlp f26af78a8ac11d9d617ed31ea5282cfaa5bcbcfa (charcodeAt and bitwise overflow) * allow escaping in regex, fixing player c57c113c
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@ -135,6 +135,11 @@ class TestJSInterpreter(unittest.TestCase):
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self.assertEqual(jsi.call_function('x'), [20, 20, 30, 40, 50])
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def test_builtins(self):
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jsi = JSInterpreter('''
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function x() { return NaN }
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''')
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self.assertTrue(math.isnan(jsi.call_function('x')))
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jsi = JSInterpreter('''
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function x() { return new Date('Wednesday 31 December 1969 18:01:26 MDT') - 0; }
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''')
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@ -385,6 +390,22 @@ class TestJSInterpreter(unittest.TestCase):
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''')
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self.assertEqual(jsi.call_function('x').flags & ~re.U, re.I)
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def test_char_code_at(self):
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jsi = JSInterpreter('function x(i){return "test".charCodeAt(i)}')
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self.assertEqual(jsi.call_function('x', 0), 116)
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self.assertEqual(jsi.call_function('x', 1), 101)
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self.assertEqual(jsi.call_function('x', 2), 115)
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self.assertEqual(jsi.call_function('x', 3), 116)
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self.assertEqual(jsi.call_function('x', 4), None)
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self.assertEqual(jsi.call_function('x', 'not_a_number'), 116)
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def test_bitwise_operators_overflow(self):
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jsi = JSInterpreter('function x(){return -524999584 << 5}')
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self.assertEqual(jsi.call_function('x'), 379882496)
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jsi = JSInterpreter('function x(){return 1236566549 << 5}')
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self.assertEqual(jsi.call_function('x'), 915423904)
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if __name__ == '__main__':
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unittest.main()
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@ -111,10 +111,26 @@ _NSIG_TESTS = [
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'https://www.youtube.com/s/player/1f7d5369/player_ias.vflset/en_US/base.js',
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'batNX7sYqIJdkJ', 'IhOkL_zxbkOZBw',
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),
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(
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'https://www.youtube.com/s/player/009f1d77/player_ias.vflset/en_US/base.js',
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'5dwFHw8aFWQUQtffRq', 'audescmLUzI3jw',
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),
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(
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'https://www.youtube.com/s/player/dc0c6770/player_ias.vflset/en_US/base.js',
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'5EHDMgYLV6HPGk_Mu-kk', 'n9lUJLHbxUI0GQ',
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),
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(
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'https://www.youtube.com/s/player/c2199353/player_ias.vflset/en_US/base.js',
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'5EHDMgYLV6HPGk_Mu-kk', 'AD5rgS85EkrE7',
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),
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(
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'https://www.youtube.com/s/player/113ca41c/player_ias.vflset/en_US/base.js',
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'cgYl-tlYkhjT7A', 'hI7BBr2zUgcmMg',
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),
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(
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'https://www.youtube.com/s/player/c57c113c/player_ias.vflset/en_US/base.js',
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'-Txvy6bT5R6LqgnQNx', 'dcklJCnRUHbgSg',
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),
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]
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@ -23,10 +23,11 @@ from .compat import (
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def _js_bit_op(op):
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def zeroise(x):
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return 0 if x in (None, JS_Undefined) else x
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def wrapped(a, b):
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def zeroise(x):
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return 0 if x in (None, JS_Undefined) else x
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return op(zeroise(a), zeroise(b))
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return op(zeroise(a), zeroise(b)) & 0xffffffff
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return wrapped
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@ -44,7 +45,7 @@ def _js_arith_op(op):
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def _js_div(a, b):
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if JS_Undefined in (a, b) or not (a and b):
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return float('nan')
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return float('inf') if not b else operator.truediv(a or 0, b)
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return operator.truediv(a or 0, b) if b else float('inf')
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def _js_mod(a, b):
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@ -260,13 +261,14 @@ class JSInterpreter(object):
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counters[_MATCHING_PARENS[char]] += 1
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elif char in counters:
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counters[char] -= 1
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if not escaping and char in _QUOTES and in_quote in (char, None):
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if in_quote or after_op or char != '/':
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in_quote = None if in_quote and not in_regex_char_group else char
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elif in_quote == '/' and char in '[]':
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in_regex_char_group = char == '['
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if not escaping:
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if char in _QUOTES and in_quote in (char, None):
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if in_quote or after_op or char != '/':
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in_quote = None if in_quote and not in_regex_char_group else char
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elif in_quote == '/' and char in '[]':
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in_regex_char_group = char == '['
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escaping = not escaping and in_quote and char == '\\'
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after_op = not in_quote and char in cls.OP_CHARS or (char == ' ' and after_op)
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after_op = not in_quote and (char in cls.OP_CHARS or (char.isspace() and after_op))
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if char != delim[pos] or any(counters.values()) or in_quote:
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pos = skipping = 0
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@ -590,6 +592,8 @@ class JSInterpreter(object):
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elif expr == 'undefined':
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return JS_Undefined, should_return
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elif expr == 'NaN':
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return float('NaN'), should_return
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elif md.get('return'):
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return local_vars[m.group('name')], should_return
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@ -635,7 +639,8 @@ class JSInterpreter(object):
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def assertion(cndn, msg):
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""" assert, but without risk of getting optimized out """
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if not cndn:
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raise ExtractorError('{member} {msg}'.format(**locals()), expr=expr)
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memb = member
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raise self.Exception('{member} {msg}'.format(**locals()), expr=expr)
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def eval_method():
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if (variable, member) == ('console', 'debug'):
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@ -737,6 +742,13 @@ class JSInterpreter(object):
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return obj.index(idx, start)
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except ValueError:
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return -1
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elif member == 'charCodeAt':
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assertion(isinstance(obj, compat_str), 'must be applied on a string')
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# assertion(len(argvals) == 1, 'takes exactly one argument') # but not enforced
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idx = argvals[0] if isinstance(argvals[0], int) else 0
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if idx >= len(obj):
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return None
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return ord(obj[idx])
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idx = int(member) if isinstance(obj, list) else member
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return obj[idx](argvals, allow_recursion=allow_recursion)
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@ -820,12 +832,10 @@ class JSInterpreter(object):
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if mobj is None:
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break
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start, body_start = mobj.span()
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body, remaining = self._separate_at_paren(code[body_start - 1:])
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name = self._named_object(
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local_vars,
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self.extract_function_from_code(
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self.build_arglist(mobj.group('args')),
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body, local_vars, *global_stack))
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body, remaining = self._separate_at_paren(code[body_start - 1:], '}')
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name = self._named_object(local_vars, self.extract_function_from_code(
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[x.strip() for x in mobj.group('args').split(',')],
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body, local_vars, *global_stack))
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code = code[:start] + name + remaining
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return self.build_function(argnames, code, local_vars, *global_stack)
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@ -854,7 +864,7 @@ class JSInterpreter(object):
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zip_longest(argnames, args, fillvalue=None))
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global_stack[0].update(kwargs)
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var_stack = LocalNameSpace(*global_stack)
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ret, should_abort = self.interpret_statement(code.replace('\n', ''), var_stack, allow_recursion - 1)
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ret, should_abort = self.interpret_statement(code.replace('\n', ' '), var_stack, allow_recursion - 1)
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if should_abort:
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return ret
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return resf
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