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[youtubedl] / youtube_dl / extractor / youku.py
1 # coding: utf-8
2
3 from __future__ import unicode_literals
4
5 import math
6 import random
7 import re
8 import time
9
10 from .common import InfoExtractor
11 from ..utils import (
12 ExtractorError,
13 )
14
15
16 class YoukuIE(InfoExtractor):
17 _VALID_URL = r'''(?x)
18 (?:
19 http://(?:v|player)\.youku\.com/(?:v_show/id_|player\.php/sid/)|
20 youku:)
21 (?P<id>[A-Za-z0-9]+)(?:\.html|/v\.swf|)
22 '''
23 _TEST = {
24 'url': 'http://v.youku.com/v_show/id_XNDgyMDQ2NTQw.html',
25 'md5': 'ffe3f2e435663dc2d1eea34faeff5b5b',
26 'params': {
27 'test': False
28 },
29 'info_dict': {
30 'id': 'XNDgyMDQ2NTQw_part00',
31 'ext': 'flv',
32 'title': 'youtube-dl test video "\'/\\ä↭𝕐'
33 }
34 }
35
36 def _gen_sid(self):
37 nowTime = int(time.time() * 1000)
38 random1 = random.randint(1000, 1998)
39 random2 = random.randint(1000, 9999)
40
41 return "%d%d%d" % (nowTime, random1, random2)
42
43 def _get_file_ID_mix_string(self, seed):
44 mixed = []
45 source = list("abcdefghijklmnopqrstuvwxyzABCDEFGHIJKLMNOPQRSTUVWXYZ/\:._-1234567890")
46 seed = float(seed)
47 for i in range(len(source)):
48 seed = (seed * 211 + 30031) % 65536
49 index = math.floor(seed / 65536 * len(source))
50 mixed.append(source[int(index)])
51 source.remove(source[int(index)])
52 # return ''.join(mixed)
53 return mixed
54
55 def _get_file_id(self, fileId, seed):
56 mixed = self._get_file_ID_mix_string(seed)
57 ids = fileId.split('*')
58 realId = []
59 for ch in ids:
60 if ch:
61 realId.append(mixed[int(ch)])
62 return ''.join(realId)
63
64 def _real_extract(self, url):
65 mobj = re.match(self._VALID_URL, url)
66 video_id = mobj.group('id')
67
68 info_url = 'http://v.youku.com/player/getPlayList/VideoIDS/' + video_id
69
70 config = self._download_json(info_url, video_id)
71
72 error_code = config['data'][0].get('error_code')
73 if error_code:
74 # -8 means blocked outside China.
75 error = config['data'][0].get('error') # Chinese and English, separated by newline.
76 raise ExtractorError(error or 'Server reported error %i' % error_code,
77 expected=True)
78
79 video_title = config['data'][0]['title']
80 seed = config['data'][0]['seed']
81
82 format = self._downloader.params.get('format', None)
83 supported_format = list(config['data'][0]['streamfileids'].keys())
84
85 # TODO proper format selection
86 if format is None or format == 'best':
87 if 'hd2' in supported_format:
88 format = 'hd2'
89 else:
90 format = 'flv'
91 ext = 'flv'
92 elif format == 'worst':
93 format = 'mp4'
94 ext = 'mp4'
95 else:
96 format = 'flv'
97 ext = 'flv'
98
99 fileid = config['data'][0]['streamfileids'][format]
100 keys = [s['k'] for s in config['data'][0]['segs'][format]]
101 # segs is usually a dictionary, but an empty *list* if an error occured.
102
103 files_info = []
104 sid = self._gen_sid()
105 fileid = self._get_file_id(fileid, seed)
106
107 # column 8,9 of fileid represent the segment number
108 # fileid[7:9] should be changed
109 for index, key in enumerate(keys):
110 temp_fileid = '%s%02X%s' % (fileid[0:8], index, fileid[10:])
111 download_url = 'http://k.youku.com/player/getFlvPath/sid/%s_%02X/st/flv/fileid/%s?k=%s' % (sid, index, temp_fileid, key)
112
113 info = {
114 'id': '%s_part%02d' % (video_id, index),
115 'url': download_url,
116 'uploader': None,
117 'upload_date': None,
118 'title': video_title,
119 'ext': ext,
120 }
121 files_info.append(info)
122
123 return files_info