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[extractor/bilibili:SpaceVideo] Extract signature (#7149)

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Authored by: elyse0
Closes #6956, closes #7081
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Elyse 2023-05-29 09:30:30 -06:00 committed by GitHub
parent 03789976d3
commit 6f10cdcf7e
No known key found for this signature in database
GPG Key ID: 4AEE18F83AFDEB23
1 changed files with 52 additions and 5 deletions
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57
yt_dlp/extractor/bilibili.py
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@ -1,7 +1,9 @@
import base64
import functools
import hashlib
import itertools
import math
import time
import urllib.error
import urllib.parse
@ -26,6 +28,7 @@ from ..utils import (
srt_subtitles_timecode,
str_or_none,
traverse_obj,
try_call,
unified_timestamp,
unsmuggle_url,
url_or_none,
@ -514,19 +517,63 @@ class BilibiliSpaceVideoIE(BilibiliSpaceBaseIE):
'id': '3985676',
},
'playlist_mincount': 178,
}, {
'url': 'https://space.bilibili.com/313580179/video',
'info_dict': {
'id': '313580179',
},
'playlist_mincount': 92,
}]
def _extract_signature(self, playlist_id):
session_data = self._download_json('https://api.bilibili.com/x/web-interface/nav', playlist_id, fatal=False)
key_from_url = lambda x: x[x.rfind('/') + 1:].split('.')[0]
img_key = traverse_obj(
session_data, ('data', 'wbi_img', 'img_url', {key_from_url})) or '34478ba821254d9d93542680e3b86100'
sub_key = traverse_obj(
session_data, ('data', 'wbi_img', 'sub_url', {key_from_url})) or '7e16a90d190a4355a78fd00b32a38de6'
session_key = img_key + sub_key
signature_values = []
for position in (
46, 47, 18, 2, 53, 8, 23, 32, 15, 50, 10, 31, 58, 3, 45, 35, 27, 43, 5, 49, 33, 9, 42, 19, 29, 28, 14, 39,
12, 38, 41, 13, 37, 48, 7, 16, 24, 55, 40, 61, 26, 17, 0, 1, 60, 51, 30, 4, 22, 25, 54, 21, 56, 59, 6, 63,
57, 62, 11, 36, 20, 34, 44, 52
):
char_at_position = try_call(lambda: session_key[position])
if char_at_position:
signature_values.append(char_at_position)
return ''.join(signature_values)[:32]
def _real_extract(self, url):
playlist_id, is_video_url = self._match_valid_url(url).group('id', 'video')
if not is_video_url:
self.to_screen('A channel URL was given. Only the channel\'s videos will be downloaded. '
'To download audios, add a "/audio" to the URL')
signature = self._extract_signature(playlist_id)
def fetch_page(page_idx):
query = {
'keyword': '',
'mid': playlist_id,
'order': 'pubdate',
'order_avoided': 'true',
'platform': 'web',
'pn': page_idx + 1,
'ps': 30,
'tid': 0,
'web_location': 1550101,
'wts': int(time.time()),
}
query['w_rid'] = hashlib.md5(f'{urllib.parse.urlencode(query)}{signature}'.encode()).hexdigest()
try:
response = self._download_json('https://api.bilibili.com/x/space/arc/search',
playlist_id, note=f'Downloading page {page_idx}',
query={'mid': playlist_id, 'pn': page_idx + 1, 'jsonp': 'jsonp'})
response = self._download_json('https://api.bilibili.com/x/space/wbi/arc/search',
playlist_id, note=f'Downloading page {page_idx}', query=query)
except ExtractorError as e:
if isinstance(e.cause, urllib.error.HTTPError) and e.cause.code == 412:
raise ExtractorError(
@ -556,9 +603,9 @@ class BilibiliSpaceVideoIE(BilibiliSpaceBaseIE):
class BilibiliSpaceAudioIE(BilibiliSpaceBaseIE):
_VALID_URL = r'https?://space\.bilibili\.com/(?P<id>\d+)/audio'
_TESTS = [{
'url': 'https://space.bilibili.com/3985676/audio',
'url': 'https://space.bilibili.com/313580179/audio',
'info_dict': {
'id': '3985676',
'id': '313580179',
},
'playlist_mincount': 1,
}]