mirror of
https://github.com/yt-dlp/yt-dlp.git
synced 2024-12-16 16:22:33 +00:00
6ae8ee3f54
This is the first signature algorithm to have been parsed automatically, although that only works for HTML5 players for now, and is not yet integrated into master.
109 lines
4.7 KiB
Python
109 lines
4.7 KiB
Python
#!/usr/bin/env python
|
|
|
|
# Generate youtube signature algorithm from test cases
|
|
|
|
import sys
|
|
|
|
tests = [
|
|
# 92 - vflQw-fB4 2013/07/17
|
|
("qwertyuioplkjhgfdsazxcvbnm1234567890QWERTYUIOPLKJHGFDSAZXCVBNM!@#$%^&*()_-+={[]}|:;?/>.<'`~\"",
|
|
"mrtyuioplkjhgfdsazxcvbnq1234567890QWERTY}IOPLKJHGFDSAZXCVBNM!@#$%^&*()_-+={[]\"|:;"),
|
|
# 90
|
|
("qwertyuioplkjhgfdsazxcvbnm1234567890QWERTYUIOPLKJHGFDSAZXCVBNM!@#$%^&*()_-+={[]}|:;?/>.<'`",
|
|
"mrtyuioplkjhgfdsazxcvbne1234567890QWER[YUIOPLKJHGFDSAZXCVBNM!@#$%^&*()_-+={`]}|"),
|
|
# 89
|
|
("qwertyuioplkjhgfdsazxcvbnm1234567890QWERTYUIOPLKJHGFDSAZXCVBNM!@#$%^&*()_-+={[]}|:;?/>.<'",
|
|
"/?;:|}<[{=+-_)(*&^%$#@!MqBVCXZASDFGHJKLPOIUYTREWQ0987654321mnbvcxzasdfghjklpoiuyt"),
|
|
# 88 - vflapUV9V 2013/08/28
|
|
("qwertyuioplkjhgfdsazxcvbnm1234567890QWERTYUIOPLKJHGFDSAZXCVBNM!@#$%^&*()_-+={[]}|:;?/>.<",
|
|
"ioplkjhgfdsazxcvbnm12<4567890QWERTYUIOZLKJHGFDSAeXCVBNM!@#$%^&*()_-+={[]}|:;?/>.3"),
|
|
# 87
|
|
("qwertyuioplkjhgfdsazxcvbnm1234567890QWERTYUIOPLKJHGFDSAZXCVBNM!@#$^&*()_-+={[]}|:;?/>.<",
|
|
"uioplkjhgfdsazxcvbnm1t34567890QWE2TYUIOPLKJHGFDSAZXCVeNM!@#$^&*()_-+={[]}|:;?/>.<"),
|
|
# 86 - vfluy6kdb 2013/09/06
|
|
("qwertyuioplkjhgfdsazxcvbnm1234567890QWERTYUIOPLKJHGFDSAZXCVBNM!@#$%^&*()_-+={[|};?/>.<",
|
|
"yuioplkjhgfdsazxcvbnm12345678q0QWrRTYUIOELKJHGFD-AZXCVBNM!@#$%^&*()_<+={[|};?/>.S"),
|
|
# 85 - vflkuzxcs 2013/09/11
|
|
('0123456789abcdefghijklmnopqrstuvwxyzABCDEFGHIJKLMNOPQRSTUVWXYZ!"#$%&\'()*+,-./:;<=>?@[',
|
|
'3456789a0cdefghijklmnopqrstuvwxyzABCDEFGHIJKLMNOPQRS[UVWXYZ!"#$%&\'()*+,-./:;<=>?@'),
|
|
# 84 - vflg0g8PQ 2013/08/29 (sporadic)
|
|
("qwertyuioplkjhgfdsazxcvbnm1234567890QWERTYUIOPLKJHGFDSAZXCVBNM!@#$%^&*()_-+={[};?>.<",
|
|
">?;}[{=+-_)(*&^%$#@!MNBVCXZASDFGHJKLPOIUYTREWq0987654321mnbvcxzasdfghjklpoiuytr"),
|
|
# 83
|
|
("qwertyuioplkjhgfdsazxcvbnm1234567890QWERTYUIOPLKJHGFDSAZXCVBNM!#$%^&*()_+={[};?/>.<",
|
|
".>/?;}[{=+_)(*&^%<#!MNBVCXZASPFGHJKLwOIUYTREWQ0987654321mnbvcxzasdfghjklpoiuytreq"),
|
|
# 82 - vflGNjMhJ 2013/09/12
|
|
("qwertyuioplkjhgfdsazxcvbnm1234567890QWERTYUIOPLKHGFDSAZXCVBNM!@#$%^&*(-+={[};?/>.<",
|
|
".>/?;}[<=+-(*&^%$#@!MNBVCXeASDFGHKLPOqUYTREWQ0987654321mnbvcxzasdfghjklpoiuytrIwZ"),
|
|
# 81 - vflLC8JvQ 2013/07/25
|
|
("qwertyuioplkjhgfdsazxcvbnm1234567890QWERTYUIOPLKHGFDSAZXCVBNM!@#$%^&*(-+={[};?/>.",
|
|
"C>/?;}[{=+-(*&^%$#@!MNBVYXZASDFGHKLPOIU.TREWQ0q87659321mnbvcxzasdfghjkl4oiuytrewp"),
|
|
# 80 - vflZK4ZYR 2013/08/23 (sporadic)
|
|
("qwertyuioplkjhgfdsazxcvbnm1234567890QWERTYUIOPLKHGFDSAZXCVBNM!@#$%^&*(-+={[};?/>",
|
|
"wertyuioplkjhgfdsaqxcvbnm1234567890QWERTYUIOPLKHGFDSAZXCVBNM!@#$%^&z(-+={[};?/>"),
|
|
# 79 - vflLC8JvQ 2013/07/25 (sporadic)
|
|
("qwertyuioplkjhgfdsazxcvbnm1234567890QWERTYUIOPLKHGFDSAZXCVBNM!@#$%^&*(-+={[};?/",
|
|
"Z?;}[{=+-(*&^%$#@!MNBVCXRASDFGHKLPOIUYT/EWQ0q87659321mnbvcxzasdfghjkl4oiuytrewp"),
|
|
]
|
|
|
|
tests_age_gate = [
|
|
# 86 - vflqinMWD
|
|
("qwertyuioplkjhgfdsazxcvbnm1234567890QWERTYUIOPLKJHGFDSAZXCVBNM!@#$%^&*()_-+={[|};?/>.<",
|
|
"ertyuioplkjhgfdsazxcvbnm1234567890QWERTYUIOPLKJHGFDSAZXCVBNM!/#$%^&*()_-+={[|};?@"),
|
|
]
|
|
|
|
def find_matching(wrong, right):
|
|
idxs = [wrong.index(c) for c in right]
|
|
return compress(idxs)
|
|
return ('s[%d]' % i for i in idxs)
|
|
|
|
def compress(idxs):
|
|
def _genslice(start, end, step):
|
|
starts = '' if start == 0 else str(start)
|
|
ends = ':%d' % (end+step)
|
|
steps = '' if step == 1 else (':%d' % step)
|
|
return 's[%s%s%s]' % (starts, ends, steps)
|
|
|
|
step = None
|
|
for i, prev in zip(idxs[1:], idxs[:-1]):
|
|
if step is not None:
|
|
if i - prev == step:
|
|
continue
|
|
yield _genslice(start, prev, step)
|
|
step = None
|
|
continue
|
|
if i - prev in [-1, 1]:
|
|
step = i - prev
|
|
start = prev
|
|
continue
|
|
else:
|
|
yield 's[%d]' % prev
|
|
if step is None:
|
|
yield 's[%d]' % i
|
|
else:
|
|
yield _genslice(start, i, step)
|
|
|
|
def _assert_compress(inp, exp):
|
|
res = list(compress(inp))
|
|
if res != exp:
|
|
print('Got %r, expected %r' % (res, exp))
|
|
assert res == exp
|
|
_assert_compress([0,2,4,6], ['s[0]', 's[2]', 's[4]', 's[6]'])
|
|
_assert_compress([0,1,2,4,6,7], ['s[:3]', 's[4]', 's[6:8]'])
|
|
_assert_compress([8,0,1,2,4,7,6,9], ['s[8]', 's[:3]', 's[4]', 's[7:5:-1]', 's[9]'])
|
|
|
|
def gen(wrong, right, indent):
|
|
code = ' + '.join(find_matching(wrong, right))
|
|
return 'if len(s) == %d:\n%s return %s\n' % (len(wrong), indent, code)
|
|
|
|
def genall(tests):
|
|
indent = ' ' * 8
|
|
return indent + (indent + 'el').join(gen(wrong, right, indent) for wrong,right in tests)
|
|
|
|
def main():
|
|
print(genall(tests))
|
|
print(u' Age gate:')
|
|
print(genall(tests_age_gate))
|
|
|
|
if __name__ == '__main__':
|
|
main()
|