]> Raphaël G. Git Repositories - youtubedl/blob - youtube_dl/extractor/generic.py
Merge tag 'upstream/2013.08.17'
[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
12 ExtractorError,
13 )
14 from .brightcove import BrightcoveIE
15
16 class GenericIE(InfoExtractor):
17 IE_DESC = u'Generic downloader that works on some sites'
18 _VALID_URL = r'.*'
19 IE_NAME = u'generic'
20 _TESTS = [
21 {
22 u'url': u'http://www.hodiho.fr/2013/02/regis-plante-sa-jeep.html',
23 u'file': u'13601338388002.mp4',
24 u'md5': u'85b90ccc9d73b4acd9138d3af4c27f89',
25 u'info_dict': {
26 u"uploader": u"www.hodiho.fr",
27 u"title": u"R\u00e9gis plante sa Jeep"
28 }
29 },
30 {
31 u'url': u'http://www.8tv.cat/8aldia/videos/xavier-sala-i-martin-aquesta-tarda-a-8-al-dia/',
32 u'file': u'2371591881001.mp4',
33 u'md5': u'9e80619e0a94663f0bdc849b4566af19',
34 u'note': u'Test Brightcove downloads and detection in GenericIE',
35 u'info_dict': {
36 u'title': u'Xavier Sala i Martín: “Un banc que no presta és un banc zombi que no serveix per a res”',
37 u'uploader': u'8TV',
38 u'description': u'md5:a950cc4285c43e44d763d036710cd9cd',
39 }
40 },
41 ]
42
43 def report_download_webpage(self, video_id):
44 """Report webpage download."""
45 if not self._downloader.params.get('test', False):
46 self._downloader.report_warning(u'Falling back on generic information extractor.')
47 super(GenericIE, self).report_download_webpage(video_id)
48
49 def report_following_redirect(self, new_url):
50 """Report information extraction."""
51 self._downloader.to_screen(u'[redirect] Following redirect to %s' % new_url)
52
53 def _test_redirect(self, url):
54 """Check if it is a redirect, like url shorteners, in case return the new url."""
55 class HeadRequest(compat_urllib_request.Request):
56 def get_method(self):
57 return "HEAD"
58
59 class HEADRedirectHandler(compat_urllib_request.HTTPRedirectHandler):
60 """
61 Subclass the HTTPRedirectHandler to make it use our
62 HeadRequest also on the redirected URL
63 """
64 def redirect_request(self, req, fp, code, msg, headers, newurl):
65 if code in (301, 302, 303, 307):
66 newurl = newurl.replace(' ', '%20')
67 newheaders = dict((k,v) for k,v in req.headers.items()
68 if k.lower() not in ("content-length", "content-type"))
69 return HeadRequest(newurl,
70 headers=newheaders,
71 origin_req_host=req.get_origin_req_host(),
72 unverifiable=True)
73 else:
74 raise compat_urllib_error.HTTPError(req.get_full_url(), code, msg, headers, fp)
75
76 class HTTPMethodFallback(compat_urllib_request.BaseHandler):
77 """
78 Fallback to GET if HEAD is not allowed (405 HTTP error)
79 """
80 def http_error_405(self, req, fp, code, msg, headers):
81 fp.read()
82 fp.close()
83
84 newheaders = dict((k,v) for k,v in req.headers.items()
85 if k.lower() not in ("content-length", "content-type"))
86 return self.parent.open(compat_urllib_request.Request(req.get_full_url(),
87 headers=newheaders,
88 origin_req_host=req.get_origin_req_host(),
89 unverifiable=True))
90
91 # Build our opener
92 opener = compat_urllib_request.OpenerDirector()
93 for handler in [compat_urllib_request.HTTPHandler, compat_urllib_request.HTTPDefaultErrorHandler,
94 HTTPMethodFallback, HEADRedirectHandler,
95 compat_urllib_request.HTTPErrorProcessor, compat_urllib_request.HTTPSHandler]:
96 opener.add_handler(handler())
97
98 response = opener.open(HeadRequest(url))
99 if response is None:
100 raise ExtractorError(u'Invalid URL protocol')
101 new_url = response.geturl()
102
103 if url == new_url:
104 return False
105
106 self.report_following_redirect(new_url)
107 return new_url
108
109 def _real_extract(self, url):
110 new_url = self._test_redirect(url)
111 if new_url: return [self.url_result(new_url)]
112
113 video_id = url.split('/')[-1]
114 try:
115 webpage = self._download_webpage(url, video_id)
116 except ValueError:
117 # since this is the last-resort InfoExtractor, if
118 # this error is thrown, it'll be thrown here
119 raise ExtractorError(u'Invalid URL: %s' % url)
120
121 self.report_extraction(video_id)
122 # Look for BrigthCove:
123 m_brightcove = re.search(r'<object.+?class=([\'"]).*?BrightcoveExperience.*?\1.+?</object>', webpage, re.DOTALL)
124 if m_brightcove is not None:
125 self.to_screen(u'Brightcove video detected.')
126 bc_url = BrightcoveIE._build_brighcove_url(m_brightcove.group())
127 return self.url_result(bc_url, 'Brightcove')
128
129 # Start with something easy: JW Player in SWFObject
130 mobj = re.search(r'flashvars: [\'"](?:.*&)?file=(http[^\'"&]*)', webpage)
131 if mobj is None:
132 # Broaden the search a little bit
133 mobj = re.search(r'[^A-Za-z0-9]?(?:file|source)=(http[^\'"&]*)', webpage)
134 if mobj is None:
135 # Broaden the search a little bit: JWPlayer JS loader
136 mobj = re.search(r'[^A-Za-z0-9]?file["\']?:\s*["\'](http[^\'"&]*)', webpage)
137 if mobj is None:
138 # Try to find twitter cards info
139 mobj = re.search(r'<meta (?:property|name)="twitter:player:stream" (?:content|value)="(.+?)"', webpage)
140 if mobj is None:
141 # We look for Open Graph info:
142 # We have to match any number spaces between elements, some sites try to align them (eg.: statigr.am)
143 m_video_type = re.search(r'<meta.*?property="og:video:type".*?content="video/(.*?)"', webpage)
144 # We only look in og:video if the MIME type is a video, don't try if it's a Flash player:
145 if m_video_type is not None:
146 mobj = re.search(r'<meta.*?property="og:video".*?content="(.*?)"', webpage)
147 if mobj is None:
148 raise ExtractorError(u'Invalid URL: %s' % url)
149
150 # It's possible that one of the regexes
151 # matched, but returned an empty group:
152 if mobj.group(1) is None:
153 raise ExtractorError(u'Invalid URL: %s' % url)
154
155 video_url = compat_urllib_parse.unquote(mobj.group(1))
156 video_id = os.path.basename(video_url)
157
158 # here's a fun little line of code for you:
159 video_extension = os.path.splitext(video_id)[1][1:]
160 video_id = os.path.splitext(video_id)[0]
161
162 # it's tempting to parse this further, but you would
163 # have to take into account all the variations like
164 # Video Title - Site Name
165 # Site Name | Video Title
166 # Video Title - Tagline | Site Name
167 # and so on and so forth; it's just not practical
168 video_title = self._html_search_regex(r'<title>(.*)</title>',
169 webpage, u'video title', default=u'video', flags=re.DOTALL)
170
171 # video uploader is domain name
172 video_uploader = self._search_regex(r'(?:https?://)?([^/]*)/.*',
173 url, u'video uploader')
174
175 return [{
176 'id': video_id,
177 'url': video_url,
178 'uploader': video_uploader,
179 'upload_date': None,
180 'title': video_title,
181 'ext': video_extension,
182 }]