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