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# coding: utf-8
from __future__ import unicode_literals
import hashlib
import random
from ..compat import compat_urlparse, compat_b64decode
from ..utils import (
ExtractorError,
int_or_none,
js_to_json,
str_or_none,
try_get,
unescapeHTML,
update_url_query,
)
from .common import InfoExtractor
class HuyaLiveIE(InfoExtractor):
_VALID_URL = r'https?://(?:www\.|m\.)?huya\.com/(?P<id>[^/#?&]+)(?:\D|$)'
IE_NAME = 'huya:live'
IE_DESC = 'huya.com'
TESTS = [{
'url': 'https://www.huya.com/572329',
'info_dict': {
'id': '572329',
'title': str,
'description': str,
'is_live': True,
'view_count': int,
},
'params': {
'skip_download': True,
},
}, {
'url': 'https://www.huya.com/xiaoyugame',
'only_matching': True
}]
_RESOLUTION = {
'蓝光4M': {
'width': 1920,
'height': 1080,
},
'超清': {
'width': 1280,
'height': 720,
},
'流畅': {
'width': 800,
'height': 480
}
}
def _real_extract(self, url):
video_id = self._match_id(url)
webpage = self._download_webpage(url, video_id=video_id)
json_stream = self._search_regex(r'"stream":\s+"([a-zA-Z0-9+=/]+)"', webpage, 'stream', default=None)
if not json_stream:
raise ExtractorError('Video is offline', expected=True)
stream_data = self._parse_json(compat_b64decode(json_stream).decode(), video_id=video_id,
transform_source=js_to_json)
room_info = try_get(stream_data, lambda x: x['data'][0]['gameLiveInfo'])
if not room_info:
raise ExtractorError('Can not extract the room info', expected=True)
title = room_info.get('roomName') or room_info.get('introduction') or self._html_extract_title(webpage)
screen_type = room_info.get('screenType')
live_source_type = room_info.get('liveSourceType')
stream_info_list = stream_data['data'][0]['gameStreamInfoList']
formats = []
for stream_info in stream_info_list:
stream_url = stream_info.get('sFlvUrl')
if not stream_url:
continue
stream_name = stream_info.get('sStreamName')
re_secret = not screen_type and live_source_type in (0, 8, 13)
params = dict(compat_urlparse.parse_qsl(unescapeHTML(stream_info['sFlvAntiCode'])))
fm, ss = '', ''
if re_secret:
fm, ss = self.encrypt(params, stream_info, stream_name)
for si in stream_data.get('vMultiStreamInfo'):
rate = si.get('iBitRate')
if rate:
params['ratio'] = rate
else:
params.pop('ratio', None)
if re_secret:
params['wsSecret'] = hashlib.md5(
'_'.join([fm, params['u'], stream_name, ss, params['wsTime']]))
formats.append({
'ext': stream_info.get('sFlvUrlSuffix'),
'format_id': str_or_none(stream_info.get('iLineIndex')),
'tbr': rate,
'url': update_url_query(f'{stream_url}/{stream_name}.{stream_info.get("sFlvUrlSuffix")}',
query=params),
**self._RESOLUTION.get(si.get('sDisplayName'), {}),
})
self._sort_formats(formats)
return {
'id': video_id,
'title': title,
'formats': formats,
'view_count': room_info.get('totalCount'),
'thumbnail': room_info.get('screenshot'),
'description': room_info.get('contentIntro'),
'http_headers': {
'Origin': 'https://www.huya.com',
'Referer': 'https://www.huya.com/',
},
}
def encrypt(self, params, stream_info, stream_name):
ct = int_or_none(params.get('wsTime'), 16) + random.random()
presenter_uid = stream_info['lPresenterUid']
if not stream_name.startswith(str(presenter_uid)):
uid = presenter_uid
else:
uid = int_or_none(ct % 1e7 * 1e6 % 0xffffffff)
u1 = uid & 0xffffffff00000000
u2 = uid & 0xffffffff
u3 = uid & 0xffffff
u = u1 | u2 >> 24 | u3 << 8
params.update({
'u': str_or_none(u),
'seqid': str_or_none(int_or_none(ct * 1000) + uid),
'ver': '1',
'uuid': int_or_none(ct % 1e7 * 1e6 % 0xffffffff),
't': '100',
})
fm = compat_b64decode(params['fm']).decode().split('_', 1)[0]
ss = hashlib.md5('|'.join([params['seqid'], params['ctype'], params['t']]))
return fm, ss
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