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[youtube-dl] / 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