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[youtubedl] / youtube_dl / extractor / generic.py
1 # encoding: utf-8
2
3 import os
4 import re
5
6 from .common import InfoExtractor
7 from ..utils import (
8 compat_urllib_error,
9 compat_urllib_parse,
10 compat_urllib_request,
11 compat_urlparse,
12
13 ExtractorError,
14 )
15 from .brightcove import BrightcoveIE
16
17
18 class GenericIE(InfoExtractor):
19 IE_DESC = u'Generic downloader that works on some sites'
20 _VALID_URL = r'.*'
21 IE_NAME = u'generic'
22 _TESTS = [
23 {
24 u'url': u'http://www.hodiho.fr/2013/02/regis-plante-sa-jeep.html',
25 u'file': u'13601338388002.mp4',
26 u'md5': u'85b90ccc9d73b4acd9138d3af4c27f89',
27 u'info_dict': {
28 u"uploader": u"www.hodiho.fr",
29 u"title": u"R\u00e9gis plante sa Jeep"
30 }
31 },
32 {
33 u'url': u'http://www.8tv.cat/8aldia/videos/xavier-sala-i-martin-aquesta-tarda-a-8-al-dia/',
34 u'file': u'2371591881001.mp4',
35 u'md5': u'9e80619e0a94663f0bdc849b4566af19',
36 u'note': u'Test Brightcove downloads and detection in GenericIE',
37 u'info_dict': {
38 u'title': u'Xavier Sala i Martín: “Un banc que no presta és un banc zombi que no serveix per a res”',
39 u'uploader': u'8TV',
40 u'description': u'md5:a950cc4285c43e44d763d036710cd9cd',
41 }
42 },
43 ]
44
45 def report_download_webpage(self, video_id):
46 """Report webpage download."""
47 if not self._downloader.params.get('test', False):
48 self._downloader.report_warning(u'Falling back on generic information extractor.')
49 super(GenericIE, self).report_download_webpage(video_id)
50
51 def report_following_redirect(self, new_url):
52 """Report information extraction."""
53 self._downloader.to_screen(u'[redirect] Following redirect to %s' % new_url)
54
55 def _test_redirect(self, url):
56 """Check if it is a redirect, like url shorteners, in case return the new url."""
57 class HeadRequest(compat_urllib_request.Request):
58 def get_method(self):
59 return "HEAD"
60
61 class HEADRedirectHandler(compat_urllib_request.HTTPRedirectHandler):
62 """
63 Subclass the HTTPRedirectHandler to make it use our
64 HeadRequest also on the redirected URL
65 """
66 def redirect_request(self, req, fp, code, msg, headers, newurl):
67 if code in (301, 302, 303, 307):
68 newurl = newurl.replace(' ', '%20')
69 newheaders = dict((k,v) for k,v in req.headers.items()
70 if k.lower() not in ("content-length", "content-type"))
71 return HeadRequest(newurl,
72 headers=newheaders,
73 origin_req_host=req.get_origin_req_host(),
74 unverifiable=True)
75 else:
76 raise compat_urllib_error.HTTPError(req.get_full_url(), code, msg, headers, fp)
77
78 class HTTPMethodFallback(compat_urllib_request.BaseHandler):
79 """
80 Fallback to GET if HEAD is not allowed (405 HTTP error)
81 """
82 def http_error_405(self, req, fp, code, msg, headers):
83 fp.read()
84 fp.close()
85
86 newheaders = dict((k,v) for k,v in req.headers.items()
87 if k.lower() not in ("content-length", "content-type"))
88 return self.parent.open(compat_urllib_request.Request(req.get_full_url(),
89 headers=newheaders,
90 origin_req_host=req.get_origin_req_host(),
91 unverifiable=True))
92
93 # Build our opener
94 opener = compat_urllib_request.OpenerDirector()
95 for handler in [compat_urllib_request.HTTPHandler, compat_urllib_request.HTTPDefaultErrorHandler,
96 HTTPMethodFallback, HEADRedirectHandler,
97 compat_urllib_request.HTTPErrorProcessor, compat_urllib_request.HTTPSHandler]:
98 opener.add_handler(handler())
99
100 response = opener.open(HeadRequest(url))
101 if response is None:
102 raise ExtractorError(u'Invalid URL protocol')
103 new_url = response.geturl()
104
105 if url == new_url:
106 return False
107
108 self.report_following_redirect(new_url)
109 return new_url
110
111 def _real_extract(self, url):
112 try:
113 new_url = self._test_redirect(url)
114 if new_url:
115 return [self.url_result(new_url)]
116 except compat_urllib_error.HTTPError:
117 # This may be a stupid server that doesn't like HEAD, our UA, or so
118 pass
119
120 video_id = url.split('/')[-1]
121 try:
122 webpage = self._download_webpage(url, video_id)
123 except ValueError:
124 # since this is the last-resort InfoExtractor, if
125 # this error is thrown, it'll be thrown here
126 raise ExtractorError(u'Invalid URL: %s' % url)
127
128 self.report_extraction(video_id)
129 # Look for BrightCove:
130 m_brightcove = re.search(r'<object.+?class=([\'"]).*?BrightcoveExperience.*?\1.+?</object>', webpage, re.DOTALL)
131 if m_brightcove is not None:
132 self.to_screen(u'Brightcove video detected.')
133 bc_url = BrightcoveIE._build_brighcove_url(m_brightcove.group())
134 return self.url_result(bc_url, 'Brightcove')
135
136 # Start with something easy: JW Player in SWFObject
137 mobj = re.search(r'flashvars: [\'"](?:.*&)?file=(http[^\'"&]*)', webpage)
138 if mobj is None:
139 # Broaden the search a little bit
140 mobj = re.search(r'[^A-Za-z0-9]?(?:file|source)=(http[^\'"&]*)', webpage)
141 if mobj is None:
142 # Broaden the search a little bit: JWPlayer JS loader
143 mobj = re.search(r'[^A-Za-z0-9]?file["\']?:\s*["\'](http[^\'"&]*)', webpage)
144 if mobj is None:
145 # Try to find twitter cards info
146 mobj = re.search(r'<meta (?:property|name)="twitter:player:stream" (?:content|value)="(.+?)"', webpage)
147 if mobj is None:
148 # We look for Open Graph info:
149 # We have to match any number spaces between elements, some sites try to align them (eg.: statigr.am)
150 m_video_type = re.search(r'<meta.*?property="og:video:type".*?content="video/(.*?)"', webpage)
151 # We only look in og:video if the MIME type is a video, don't try if it's a Flash player:
152 if m_video_type is not None:
153 mobj = re.search(r'<meta.*?property="og:video".*?content="(.*?)"', webpage)
154 if mobj is None:
155 # HTML5 video
156 mobj = re.search(r'<video[^<]*>.*?<source .*?src="([^"]+)"', webpage, flags=re.DOTALL)
157 if mobj is None:
158 raise ExtractorError(u'Invalid URL: %s' % url)
159
160 # It's possible that one of the regexes
161 # matched, but returned an empty group:
162 if mobj.group(1) is None:
163 raise ExtractorError(u'Invalid URL: %s' % url)
164
165 video_url = compat_urllib_parse.unquote(mobj.group(1))
166 video_url = compat_urlparse.urljoin(url, video_url)
167 video_id = os.path.basename(video_url)
168
169 # here's a fun little line of code for you:
170 video_extension = os.path.splitext(video_id)[1][1:]
171 video_id = os.path.splitext(video_id)[0]
172
173 # it's tempting to parse this further, but you would
174 # have to take into account all the variations like
175 # Video Title - Site Name
176 # Site Name | Video Title
177 # Video Title - Tagline | Site Name
178 # and so on and so forth; it's just not practical
179 video_title = self._html_search_regex(r'<title>(.*)</title>',
180 webpage, u'video title', default=u'video', flags=re.DOTALL)
181
182 # video uploader is domain name
183 video_uploader = self._search_regex(r'(?:https?://)?([^/]*)/.*',
184 url, u'video uploader')
185
186 return [{
187 'id': video_id,
188 'url': video_url,
189 'uploader': video_uploader,
190 'upload_date': None,
191 'title': video_title,
192 'ext': video_extension,
193 }]