1 # coding: utf-8
2
3 from __future__ import unicode_literals
4
5 from ..compat import (
6 compat_b64decode,
7 compat_urllib_parse_unquote,
8 compat_urlparse,
9 )
10 from ..utils import (
11 determine_ext,
12 update_url_query,
13 )
14 from .bokecc import BokeCCBaseIE
15
16
17 class InfoQIE(BokeCCBaseIE):
18 _VALID_URL = r'https?://(?:www\.)?infoq\.com/(?:[^/]+/)+(?P<id>[^/]+)'
19
20 _TESTS = [{
21 'url': 'http://www.infoq.com/presentations/A-Few-of-My-Favorite-Python-Things',
22 'md5': 'b5ca0e0a8c1fed93b0e65e48e462f9a2',
23 'info_dict': {
24 'id': 'A-Few-of-My-Favorite-Python-Things',
25 'ext': 'mp4',
26 'description': 'Mike Pirnat presents some tips and tricks, standard libraries and third party packages that make programming in Python a richer experience.',
27 'title': 'A Few of My Favorite [Python] Things',
28 },
29 }, {
30 'url': 'http://www.infoq.com/fr/presentations/changez-avis-sur-javascript',
31 'only_matching': True,
32 }, {
33 'url': 'http://www.infoq.com/cn/presentations/openstack-continued-delivery',
34 'md5': '4918d0cca1497f2244572caf626687ef',
35 'info_dict': {
36 'id': 'openstack-continued-delivery',
37 'title': 'OpenStack持续交付之路',
38 'ext': 'flv',
39 'description': 'md5:308d981fb28fa42f49f9568322c683ff',
40 },
41 }, {
42 'url': 'https://www.infoq.com/presentations/Simple-Made-Easy',
43 'md5': '0e34642d4d9ef44bf86f66f6399672db',
44 'info_dict': {
45 'id': 'Simple-Made-Easy',
46 'title': 'Simple Made Easy',
47 'ext': 'mp3',
48 'description': 'md5:3e0e213a8bbd074796ef89ea35ada25b',
49 },
50 'params': {
51 'format': 'bestaudio',
52 },
53 }]
54
55 def _extract_rtmp_video(self, webpage):
56 # The server URL is hardcoded
57 video_url = 'rtmpe://video.infoq.com/cfx/st/'
58
59 # Extract video URL
60 encoded_id = self._search_regex(
61 r"jsclassref\s*=\s*'([^']*)'", webpage, 'encoded id', default=None)
62
63 real_id = compat_urllib_parse_unquote(compat_b64decode(encoded_id).decode('utf-8'))
64 playpath = 'mp4:' + real_id
65
66 return [{
67 'format_id': 'rtmp_video',
68 'url': video_url,
69 'ext': determine_ext(playpath),
70 'play_path': playpath,
71 }]
72
73 def _extract_cf_auth(self, webpage):
74 policy = self._search_regex(r'InfoQConstants\.scp\s*=\s*\'([^\']+)\'', webpage, 'policy')
75 signature = self._search_regex(r'InfoQConstants\.scs\s*=\s*\'([^\']+)\'', webpage, 'signature')
76 key_pair_id = self._search_regex(r'InfoQConstants\.sck\s*=\s*\'([^\']+)\'', webpage, 'key-pair-id')
77 return {
78 'Policy': policy,
79 'Signature': signature,
80 'Key-Pair-Id': key_pair_id,
81 }
82
83 def _extract_http_video(self, webpage):
84 http_video_url = self._search_regex(r'P\.s\s*=\s*\'([^\']+)\'', webpage, 'video URL')
85 http_video_url = update_url_query(http_video_url, self._extract_cf_auth(webpage))
86 return [{
87 'format_id': 'http_video',
88 'url': http_video_url,
89 }]
90
91 def _extract_http_audio(self, webpage, video_id):
92 fields = self._hidden_inputs(webpage)
93 http_audio_url = fields.get('filename')
94 if not http_audio_url:
95 return []
96
97 # base URL is found in the Location header in the response returned by
98 # GET https://www.infoq.com/mp3download.action?filename=... when logged in.
99 http_audio_url = compat_urlparse.urljoin('http://res.infoq.com/downloads/mp3downloads/', http_audio_url)
100 http_audio_url = update_url_query(http_audio_url, self._extract_cf_auth(webpage))
101
102 # audio file seem to be missing some times even if there is a download link
103 # so probe URL to make sure
104 if not self._is_valid_url(http_audio_url, video_id):
105 return []
106
107 return [{
108 'format_id': 'http_audio',
109 'url': http_audio_url,
110 'vcodec': 'none',
111 }]
112
113 def _real_extract(self, url):
114 video_id = self._match_id(url)
115 webpage = self._download_webpage(url, video_id)
116
117 video_title = self._html_search_regex(r'<title>(.*?)</title>', webpage, 'title')
118 video_description = self._html_search_meta('description', webpage, 'description')
119
120 if '/cn/' in url:
121 # for China videos, HTTP video URL exists but always fails with 403
122 formats = self._extract_bokecc_formats(webpage, video_id)
123 else:
124 formats = (
125 self._extract_rtmp_video(webpage)
126 + self._extract_http_video(webpage)
127 + self._extract_http_audio(webpage, video_id))
128
129 self._sort_formats(formats)
130
131 return {
132 'id': video_id,
133 'title': video_title,
134 'description': video_description,
135 'formats': formats,
136 }
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