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[youtubedl] / youtube_dl / extractor / theplatform.py
1 from __future__ import unicode_literals
2
3 import re
4 import json
5 import time
6 import hmac
7 import binascii
8 import hashlib
9
10
11 from .common import InfoExtractor
12 from ..compat import (
13 compat_str,
14 )
15 from ..utils import (
16 determine_ext,
17 ExtractorError,
18 xpath_with_ns,
19 unsmuggle_url,
20 int_or_none,
21 )
22
23 _x = lambda p: xpath_with_ns(p, {'smil': 'http://www.w3.org/2005/SMIL21/Language'})
24
25
26 class ThePlatformIE(InfoExtractor):
27 _VALID_URL = r'''(?x)
28 (?:https?://(?:link|player)\.theplatform\.com/[sp]/(?P<provider_id>[^/]+)/
29 (?P<config>(?:[^/\?]+/(?:swf|config)|onsite)/select/)?
30 |theplatform:)(?P<id>[^/\?&]+)'''
31
32 _TESTS = [{
33 # from http://www.metacafe.com/watch/cb-e9I_cZgTgIPd/blackberrys_big_bold_z30/
34 'url': 'http://link.theplatform.com/s/dJ5BDC/e9I_cZgTgIPd/meta.smil?format=smil&Tracking=true&mbr=true',
35 'info_dict': {
36 'id': 'e9I_cZgTgIPd',
37 'ext': 'flv',
38 'title': 'Blackberry\'s big, bold Z30',
39 'description': 'The Z30 is Blackberry\'s biggest, baddest mobile messaging device yet.',
40 'duration': 247,
41 },
42 'params': {
43 # rtmp download
44 'skip_download': True,
45 },
46 }, {
47 # from http://www.cnet.com/videos/tesla-model-s-a-second-step-towards-a-cleaner-motoring-future/
48 'url': 'http://link.theplatform.com/s/kYEXFC/22d_qsQ6MIRT',
49 'info_dict': {
50 'id': '22d_qsQ6MIRT',
51 'ext': 'flv',
52 'description': 'md5:ac330c9258c04f9d7512cf26b9595409',
53 'title': 'Tesla Model S: A second step towards a cleaner motoring future',
54 },
55 'params': {
56 # rtmp download
57 'skip_download': True,
58 }
59 }]
60
61 @staticmethod
62 def _sign_url(url, sig_key, sig_secret, life=600, include_qs=False):
63 flags = '10' if include_qs else '00'
64 expiration_date = '%x' % (int(time.time()) + life)
65
66 def str_to_hex(str):
67 return binascii.b2a_hex(str.encode('ascii')).decode('ascii')
68
69 def hex_to_str(hex):
70 return binascii.a2b_hex(hex)
71
72 relative_path = url.split('http://link.theplatform.com/s/')[1].split('?')[0]
73 clear_text = hex_to_str(flags + expiration_date + str_to_hex(relative_path))
74 checksum = hmac.new(sig_key.encode('ascii'), clear_text, hashlib.sha1).hexdigest()
75 sig = flags + expiration_date + checksum + str_to_hex(sig_secret)
76 return '%s&sig=%s' % (url, sig)
77
78 def _real_extract(self, url):
79 url, smuggled_data = unsmuggle_url(url, {})
80
81 mobj = re.match(self._VALID_URL, url)
82 provider_id = mobj.group('provider_id')
83 video_id = mobj.group('id')
84
85 if not provider_id:
86 provider_id = 'dJ5BDC'
87
88 if smuggled_data.get('force_smil_url', False):
89 smil_url = url
90 elif mobj.group('config'):
91 config_url = url + '&form=json'
92 config_url = config_url.replace('swf/', 'config/')
93 config_url = config_url.replace('onsite/', 'onsite/config/')
94 config = self._download_json(config_url, video_id, 'Downloading config')
95 smil_url = config['releaseUrl'] + '&format=SMIL&formats=MPEG4&manifest=f4m'
96 else:
97 smil_url = ('http://link.theplatform.com/s/{0}/{1}/meta.smil?'
98 'format=smil&mbr=true'.format(provider_id, video_id))
99
100 sig = smuggled_data.get('sig')
101 if sig:
102 smil_url = self._sign_url(smil_url, sig['key'], sig['secret'])
103
104 meta = self._download_xml(smil_url, video_id)
105 try:
106 error_msg = next(
107 n.attrib['abstract']
108 for n in meta.findall(_x('.//smil:ref'))
109 if n.attrib.get('title') == 'Geographic Restriction' or n.attrib.get('title') == 'Expired')
110 except StopIteration:
111 pass
112 else:
113 raise ExtractorError(error_msg, expected=True)
114
115 info_url = 'http://link.theplatform.com/s/{0}/{1}?format=preview'.format(provider_id, video_id)
116 info_json = self._download_webpage(info_url, video_id)
117 info = json.loads(info_json)
118
119 subtitles = {}
120 captions = info.get('captions')
121 if isinstance(captions, list):
122 for caption in captions:
123 lang, src, mime = caption.get('lang', 'en'), caption.get('src'), caption.get('type')
124 subtitles[lang] = [{
125 'ext': 'srt' if mime == 'text/srt' else 'ttml',
126 'url': src,
127 }]
128
129 head = meta.find(_x('smil:head'))
130 body = meta.find(_x('smil:body'))
131
132 f4m_node = body.find(_x('smil:seq//smil:video'))
133 if f4m_node is None:
134 f4m_node = body.find(_x('smil:seq/smil:video'))
135 if f4m_node is not None and '.f4m' in f4m_node.attrib['src']:
136 f4m_url = f4m_node.attrib['src']
137 if 'manifest.f4m?' not in f4m_url:
138 f4m_url += '?'
139 # the parameters are from syfy.com, other sites may use others,
140 # they also work for nbc.com
141 f4m_url += '&g=UXWGVKRWHFSP&hdcore=3.0.3'
142 formats = self._extract_f4m_formats(f4m_url, video_id)
143 else:
144 formats = []
145 switch = body.find(_x('smil:switch'))
146 if switch is None:
147 switch = body.find(_x('smil:par//smil:switch'))
148 if switch is None:
149 switch = body.find(_x('smil:par/smil:switch'))
150 if switch is None:
151 switch = body.find(_x('smil:par'))
152 if switch is not None:
153 base_url = head.find(_x('smil:meta')).attrib['base']
154 for f in switch.findall(_x('smil:video')):
155 attr = f.attrib
156 width = int_or_none(attr.get('width'))
157 height = int_or_none(attr.get('height'))
158 vbr = int_or_none(attr.get('system-bitrate'), 1000)
159 format_id = '%dx%d_%dk' % (width, height, vbr)
160 formats.append({
161 'format_id': format_id,
162 'url': base_url,
163 'play_path': 'mp4:' + attr['src'],
164 'ext': 'flv',
165 'width': width,
166 'height': height,
167 'vbr': vbr,
168 })
169 else:
170 switch = body.find(_x('smil:seq//smil:switch'))
171 if switch is None:
172 switch = body.find(_x('smil:seq/smil:switch'))
173 for f in switch.findall(_x('smil:video')):
174 attr = f.attrib
175 vbr = int_or_none(attr.get('system-bitrate'), 1000)
176 ext = determine_ext(attr['src'])
177 if ext == 'once':
178 ext = 'mp4'
179 formats.append({
180 'format_id': compat_str(vbr),
181 'url': attr['src'],
182 'vbr': vbr,
183 'ext': ext,
184 })
185 self._sort_formats(formats)
186
187 return {
188 'id': video_id,
189 'title': info['title'],
190 'subtitles': subtitles,
191 'formats': formats,
192 'description': info['description'],
193 'thumbnail': info['defaultThumbnailUrl'],
194 'duration': int_or_none(info.get('duration'), 1000),
195 }