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[youtubedl] / youtube_dl / extractor / infoq.py
1 # coding: utf-8
2
3 from __future__ import unicode_literals
4
5 import base64
6
7 from .common import InfoExtractor
8 from ..compat import (
9 compat_urllib_parse_unquote,
10 compat_parse_qs,
11 )
12 from ..utils import determine_ext
13
14
15 class InfoQIE(InfoExtractor):
16 _VALID_URL = r'https?://(?:www\.)?infoq\.com/(?:[^/]+/)+(?P<id>[^/]+)'
17
18 _TESTS = [{
19 'url': 'http://www.infoq.com/presentations/A-Few-of-My-Favorite-Python-Things',
20 'md5': 'b5ca0e0a8c1fed93b0e65e48e462f9a2',
21 'info_dict': {
22 'id': 'A-Few-of-My-Favorite-Python-Things',
23 'ext': 'mp4',
24 'description': 'Mike Pirnat presents some tips and tricks, standard libraries and third party packages that make programming in Python a richer experience.',
25 'title': 'A Few of My Favorite [Python] Things',
26 },
27 }, {
28 'url': 'http://www.infoq.com/fr/presentations/changez-avis-sur-javascript',
29 'only_matching': True,
30 }, {
31 'url': 'http://www.infoq.com/cn/presentations/openstack-continued-delivery',
32 'md5': '4918d0cca1497f2244572caf626687ef',
33 'info_dict': {
34 'id': 'openstack-continued-delivery',
35 'title': 'OpenStack持续交付之路',
36 'ext': 'flv',
37 'description': 'md5:308d981fb28fa42f49f9568322c683ff',
38 },
39 }]
40
41 def _extract_bokecc_videos(self, webpage, video_id):
42 # TODO: bokecc.com is a Chinese video cloud platform
43 # It should have an independent extractor but I don't have other
44 # examples using bokecc
45 player_params_str = self._html_search_regex(
46 r'<script[^>]+src="http://p\.bokecc\.com/player\?([^"]+)',
47 webpage, 'player params', default=None)
48
49 player_params = compat_parse_qs(player_params_str)
50
51 info_xml = self._download_xml(
52 'http://p.bokecc.com/servlet/playinfo?uid=%s&vid=%s&m=1' % (
53 player_params['siteid'][0], player_params['vid'][0]), video_id)
54
55 return [{
56 'format_id': 'bokecc',
57 'url': quality.find('./copy').attrib['playurl'],
58 'preference': int(quality.attrib['value']),
59 } for quality in info_xml.findall('./video/quality')]
60
61 def _extract_rtmp_videos(self, webpage):
62 # The server URL is hardcoded
63 video_url = 'rtmpe://video.infoq.com/cfx/st/'
64
65 # Extract video URL
66 encoded_id = self._search_regex(
67 r"jsclassref\s*=\s*'([^']*)'", webpage, 'encoded id', default=None)
68
69 real_id = compat_urllib_parse_unquote(base64.b64decode(encoded_id.encode('ascii')).decode('utf-8'))
70 playpath = 'mp4:' + real_id
71
72 return [{
73 'format_id': 'rtmp',
74 'url': video_url,
75 'ext': determine_ext(playpath),
76 'play_path': playpath,
77 }]
78
79 def _extract_http_videos(self, webpage):
80 http_video_url = self._search_regex(r'P\.s\s*=\s*\'([^\']+)\'', webpage, 'video URL')
81
82 policy = self._search_regex(r'InfoQConstants.scp\s*=\s*\'([^\']+)\'', webpage, 'policy')
83 signature = self._search_regex(r'InfoQConstants.scs\s*=\s*\'([^\']+)\'', webpage, 'signature')
84 key_pair_id = self._search_regex(r'InfoQConstants.sck\s*=\s*\'([^\']+)\'', webpage, 'key-pair-id')
85
86 return [{
87 'format_id': 'http',
88 'url': http_video_url,
89 'http_headers': {
90 'Cookie': 'CloudFront-Policy=%s; CloudFront-Signature=%s; CloudFront-Key-Pair-Id=%s' % (
91 policy, signature, key_pair_id),
92 },
93 }]
94
95 def _real_extract(self, url):
96 video_id = self._match_id(url)
97 webpage = self._download_webpage(url, video_id)
98
99 video_title = self._html_search_regex(r'<title>(.*?)</title>', webpage, 'title')
100 video_description = self._html_search_meta('description', webpage, 'description')
101
102 if '/cn/' in url:
103 # for China videos, HTTP video URL exists but always fails with 403
104 formats = self._extract_bokecc_videos(webpage, video_id)
105 else:
106 formats = self._extract_rtmp_videos(webpage) + self._extract_http_videos(webpage)
107
108 self._sort_formats(formats)
109
110 return {
111 'id': video_id,
112 'title': video_title,
113 'description': video_description,
114 'formats': formats,
115 }