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[jsinterp] Fix div bug breaking player 8c7583ff

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Thx bashonly: https://github.com/ytdl-org/youtube-dl/issues/32292#issuecomment-1585639223
Fixes #32292
This commit is contained in:
dirkf 2023-06-11 13:33:50 +01:00
parent b8a86dcf1a
commit a2534f7b88
3 changed files with 54 additions and 1 deletions
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49
test/test_jsinterp.py
View file

@ -33,6 +33,55 @@ class TestJSInterpreter(unittest.TestCase):
jsi = JSInterpreter('function x4(a){return 2*a+1;}')
self.assertEqual(jsi.call_function('x4', 3), 7)
def test_add(self):
jsi = JSInterpreter('function f(){return 42 + 7;}')
self.assertEqual(jsi.call_function('f'), 49)
jsi = JSInterpreter('function f(){return 42 + undefined;}')
self.assertTrue(math.isnan(jsi.call_function('f')))
jsi = JSInterpreter('function f(){return 42 + null;}')
self.assertEqual(jsi.call_function('f'), 42)
def test_sub(self):
jsi = JSInterpreter('function f(){return 42 - 7;}')
self.assertEqual(jsi.call_function('f'), 35)
jsi = JSInterpreter('function f(){return 42 - undefined;}')
self.assertTrue(math.isnan(jsi.call_function('f')))
jsi = JSInterpreter('function f(){return 42 - null;}')
self.assertEqual(jsi.call_function('f'), 42)
def test_mul(self):
jsi = JSInterpreter('function f(){return 42 * 7;}')
self.assertEqual(jsi.call_function('f'), 294)
jsi = JSInterpreter('function f(){return 42 * undefined;}')
self.assertTrue(math.isnan(jsi.call_function('f')))
jsi = JSInterpreter('function f(){return 42 * null;}')
self.assertEqual(jsi.call_function('f'), 0)
def test_div(self):
jsi = JSInterpreter('function f(a, b){return a / b;}')
self.assertTrue(math.isnan(jsi.call_function('f', 0, 0)))
self.assertTrue(math.isnan(jsi.call_function('f', JS_Undefined, 1)))
self.assertTrue(math.isinf(jsi.call_function('f', 2, 0)))
self.assertEqual(jsi.call_function('f', 0, 3), 0)
def test_mod(self):
jsi = JSInterpreter('function f(){return 42 % 7;}')
self.assertEqual(jsi.call_function('f'), 0)
jsi = JSInterpreter('function f(){return 42 % 0;}')
self.assertTrue(math.isnan(jsi.call_function('f')))
jsi = JSInterpreter('function f(){return 42 % undefined;}')
self.assertTrue(math.isnan(jsi.call_function('f')))
def test_exp(self):
jsi = JSInterpreter('function f(){return 42 ** 2;}')
self.assertEqual(jsi.call_function('f'), 1764)
jsi = JSInterpreter('function f(){return 42 ** undefined;}')
self.assertTrue(math.isnan(jsi.call_function('f')))
jsi = JSInterpreter('function f(){return 42 ** null;}')
self.assertEqual(jsi.call_function('f'), 1)
jsi = JSInterpreter('function f(){return undefined ** 42;}')
self.assertTrue(math.isnan(jsi.call_function('f')))
def test_empty_return(self):
jsi = JSInterpreter('function f(){return; y()}')
self.assertEqual(jsi.call_function('f'), None)

4
test/test_youtube_signature.py
View file

@ -151,6 +151,10 @@ _NSIG_TESTS = [
'https://www.youtube.com/s/player/cfa9e7cb/player_ias.vflset/en_US/base.js',
'qO0NiMtYQ7TeJnfFG2', 'k9cuJDHNS5O7kQ',
),
(
'https://www.youtube.com/s/player/8c7583ff/player_ias.vflset/en_US/base.js',
'E2AQVN6y_zM7uN9w8z', '9A2dbY5GDZrt9A',
),
]

2
youtube_dl/jsinterp.py
View file

@ -82,7 +82,7 @@ def _js_arith_op(op):
def _js_div(a, b):
if JS_Undefined in (a, b) or not (a and b):
if JS_Undefined in (a, b) or not (a or b):
return _NaN
return operator.truediv(a or 0, b) if b else float('inf')