]> gitweb @ CieloNegro.org - youtube-dl.git/blob - youtube_dl/extractor/infoq.py
[cbsinteractive] extract formats with `CBSIE`
[youtube-dl.git] / youtube_dl / extractor / infoq.py
1 # coding: utf-8
2
3 from __future__ import unicode_literals
4
5 import base64
6
7 from ..compat import (
8     compat_urllib_parse_unquote,
9     compat_urlparse,
10 )
11 from ..utils import determine_ext
12 from .bokecc import BokeCCBaseIE
13
14
15 class InfoQIE(BokeCCBaseIE):
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         'url': 'https://www.infoq.com/presentations/Simple-Made-Easy',
41         'md5': '0e34642d4d9ef44bf86f66f6399672db',
42         'info_dict': {
43             'id': 'Simple-Made-Easy',
44             'title': 'Simple Made Easy',
45             'ext': 'mp3',
46             'description': 'md5:3e0e213a8bbd074796ef89ea35ada25b',
47         },
48         'params': {
49             'format': 'bestaudio',
50         },
51     }]
52
53     def _extract_rtmp_video(self, webpage):
54         # The server URL is hardcoded
55         video_url = 'rtmpe://video.infoq.com/cfx/st/'
56
57         # Extract video URL
58         encoded_id = self._search_regex(
59             r"jsclassref\s*=\s*'([^']*)'", webpage, 'encoded id', default=None)
60
61         real_id = compat_urllib_parse_unquote(base64.b64decode(encoded_id.encode('ascii')).decode('utf-8'))
62         playpath = 'mp4:' + real_id
63
64         return [{
65             'format_id': 'rtmp_video',
66             'url': video_url,
67             'ext': determine_ext(playpath),
68             'play_path': playpath,
69         }]
70
71     def _extract_cookies(self, webpage):
72         policy = self._search_regex(r'InfoQConstants.scp\s*=\s*\'([^\']+)\'', webpage, 'policy')
73         signature = self._search_regex(r'InfoQConstants.scs\s*=\s*\'([^\']+)\'', webpage, 'signature')
74         key_pair_id = self._search_regex(r'InfoQConstants.sck\s*=\s*\'([^\']+)\'', webpage, 'key-pair-id')
75         return 'CloudFront-Policy=%s; CloudFront-Signature=%s; CloudFront-Key-Pair-Id=%s' % (
76             policy, signature, key_pair_id)
77
78     def _extract_http_video(self, webpage):
79         http_video_url = self._search_regex(r'P\.s\s*=\s*\'([^\']+)\'', webpage, 'video URL')
80         return [{
81             'format_id': 'http_video',
82             'url': http_video_url,
83             'http_headers': {
84                 'Cookie': self._extract_cookies(webpage)
85             },
86         }]
87
88     def _extract_http_audio(self, webpage, video_id):
89         fields = self._hidden_inputs(webpage)
90         http_audio_url = fields['filename']
91         if http_audio_url is None:
92             return []
93
94         cookies_header = {'Cookie': self._extract_cookies(webpage)}
95
96         # base URL is found in the Location header in the response returned by
97         # GET https://www.infoq.com/mp3download.action?filename=... when logged in.
98         http_audio_url = compat_urlparse.urljoin('http://res.infoq.com/downloads/mp3downloads/', http_audio_url)
99
100         # audio file seem to be missing some times even if there is a download link
101         # so probe URL to make sure
102         if not self._is_valid_url(http_audio_url, video_id, headers=cookies_header):
103             return []
104
105         return [{
106             'format_id': 'http_audio',
107             'url': http_audio_url,
108             'vcodec': 'none',
109             'http_headers': cookies_header,
110         }]
111
112     def _real_extract(self, url):
113         video_id = self._match_id(url)
114         webpage = self._download_webpage(url, video_id)
115
116         video_title = self._html_search_regex(r'<title>(.*?)</title>', webpage, 'title')
117         video_description = self._html_search_meta('description', webpage, 'description')
118
119         if '/cn/' in url:
120             # for China videos, HTTP video URL exists but always fails with 403
121             formats = self._extract_bokecc_formats(webpage, video_id)
122         else:
123             formats = (
124                 self._extract_rtmp_video(webpage) +
125                 self._extract_http_video(webpage) +
126                 self._extract_http_audio(webpage, video_id))
127
128         self._sort_formats(formats)
129
130         return {
131             'id': video_id,
132             'title': video_title,
133             'description': video_description,
134             'formats': formats,
135         }