mirror of
https://github.com/l1ving/youtube-dl
synced 2024-12-23 01:53:00 +08:00
216 lines
9.0 KiB
Python
216 lines
9.0 KiB
Python
# encoding: utf-8
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import os
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import re
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from .common import InfoExtractor
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from ..utils import (
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compat_urllib_error,
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compat_urllib_parse,
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compat_urllib_request,
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compat_urlparse,
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ExtractorError,
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smuggle_url,
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unescapeHTML,
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)
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from .brightcove import BrightcoveIE
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class GenericIE(InfoExtractor):
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IE_DESC = u'Generic downloader that works on some sites'
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_VALID_URL = r'.*'
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IE_NAME = u'generic'
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_TESTS = [
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{
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u'url': u'http://www.hodiho.fr/2013/02/regis-plante-sa-jeep.html',
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u'file': u'13601338388002.mp4',
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u'md5': u'85b90ccc9d73b4acd9138d3af4c27f89',
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u'info_dict': {
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u"uploader": u"www.hodiho.fr",
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u"title": u"R\u00e9gis plante sa Jeep"
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}
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},
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# embedded vimeo video
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{
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u'url': u'http://skillsmatter.com/podcast/home/move-semanticsperfect-forwarding-and-rvalue-references',
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u'file': u'22444065.mp4',
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u'md5': u'2903896e23df39722c33f015af0666e2',
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u'info_dict': {
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u'title': u'ACCU 2011: Move Semantics,Perfect Forwarding, and Rvalue references- Scott Meyers- 13/04/2011',
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u"uploader_id": u"skillsmatter",
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u"uploader": u"Skills Matter",
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}
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}
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]
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def report_download_webpage(self, video_id):
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"""Report webpage download."""
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if not self._downloader.params.get('test', False):
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self._downloader.report_warning(u'Falling back on generic information extractor.')
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super(GenericIE, self).report_download_webpage(video_id)
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def report_following_redirect(self, new_url):
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"""Report information extraction."""
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self._downloader.to_screen(u'[redirect] Following redirect to %s' % new_url)
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def _test_redirect(self, url):
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"""Check if it is a redirect, like url shorteners, in case return the new url."""
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class HeadRequest(compat_urllib_request.Request):
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def get_method(self):
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return "HEAD"
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class HEADRedirectHandler(compat_urllib_request.HTTPRedirectHandler):
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"""
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Subclass the HTTPRedirectHandler to make it use our
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HeadRequest also on the redirected URL
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"""
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def redirect_request(self, req, fp, code, msg, headers, newurl):
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if code in (301, 302, 303, 307):
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newurl = newurl.replace(' ', '%20')
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newheaders = dict((k,v) for k,v in req.headers.items()
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if k.lower() not in ("content-length", "content-type"))
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return HeadRequest(newurl,
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headers=newheaders,
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origin_req_host=req.get_origin_req_host(),
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unverifiable=True)
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else:
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raise compat_urllib_error.HTTPError(req.get_full_url(), code, msg, headers, fp)
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class HTTPMethodFallback(compat_urllib_request.BaseHandler):
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"""
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Fallback to GET if HEAD is not allowed (405 HTTP error)
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"""
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def http_error_405(self, req, fp, code, msg, headers):
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fp.read()
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fp.close()
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newheaders = dict((k,v) for k,v in req.headers.items()
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if k.lower() not in ("content-length", "content-type"))
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return self.parent.open(compat_urllib_request.Request(req.get_full_url(),
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headers=newheaders,
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origin_req_host=req.get_origin_req_host(),
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unverifiable=True))
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# Build our opener
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opener = compat_urllib_request.OpenerDirector()
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for handler in [compat_urllib_request.HTTPHandler, compat_urllib_request.HTTPDefaultErrorHandler,
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HTTPMethodFallback, HEADRedirectHandler,
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compat_urllib_request.HTTPErrorProcessor, compat_urllib_request.HTTPSHandler]:
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opener.add_handler(handler())
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response = opener.open(HeadRequest(url))
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if response is None:
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raise ExtractorError(u'Invalid URL protocol')
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new_url = response.geturl()
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if url == new_url:
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return False
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self.report_following_redirect(new_url)
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return new_url
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def _real_extract(self, url):
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parsed_url = compat_urlparse.urlparse(url)
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if not parsed_url.scheme:
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self._downloader.report_warning('The url doesn\'t specify the protocol, trying with http')
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return self.url_result('http://' + url)
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try:
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new_url = self._test_redirect(url)
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if new_url:
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return [self.url_result(new_url)]
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except compat_urllib_error.HTTPError:
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# This may be a stupid server that doesn't like HEAD, our UA, or so
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pass
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video_id = url.split('/')[-1]
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try:
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webpage = self._download_webpage(url, video_id)
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except ValueError:
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# since this is the last-resort InfoExtractor, if
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# this error is thrown, it'll be thrown here
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raise ExtractorError(u'Failed to download URL: %s' % url)
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self.report_extraction(video_id)
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# Look for BrightCove:
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m_brightcove = re.search(r'<object[^>]+?class=([\'"])[^>]*?BrightcoveExperience.*?\1.+?</object>', webpage, re.DOTALL)
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if m_brightcove is not None:
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self.to_screen(u'Brightcove video detected.')
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bc_url = BrightcoveIE._build_brighcove_url(m_brightcove.group())
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return self.url_result(bc_url, 'Brightcove')
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# Look for embedded Vimeo player
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mobj = re.search(
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r'<iframe[^>]+?src="(https?://player.vimeo.com/video/.+?)"', webpage)
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if mobj:
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player_url = unescapeHTML(mobj.group(1))
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surl = smuggle_url(player_url, {'Referer': url})
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return self.url_result(surl, 'Vimeo')
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# Look for embedded YouTube player
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mobj = re.search(
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r'<iframe[^>]+?src="(https?://(?:www\.)?youtube.com/embed/.+?)"', webpage)
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if mobj:
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surl = unescapeHTML(mobj.group(1))
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return self.url_result(surl, 'Youtube')
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# Start with something easy: JW Player in SWFObject
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mobj = re.search(r'flashvars: [\'"](?:.*&)?file=(http[^\'"&]*)', webpage)
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if mobj is None:
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# Broaden the search a little bit
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mobj = re.search(r'[^A-Za-z0-9]?(?:file|source)=(http[^\'"&]*)', webpage)
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if mobj is None:
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# Broaden the search a little bit: JWPlayer JS loader
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mobj = re.search(r'[^A-Za-z0-9]?file["\']?:\s*["\'](http[^\'"&]*)', webpage)
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if mobj is None:
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# Try to find twitter cards info
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mobj = re.search(r'<meta (?:property|name)="twitter:player:stream" (?:content|value)="(.+?)"', webpage)
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if mobj is None:
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# We look for Open Graph info:
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# We have to match any number spaces between elements, some sites try to align them (eg.: statigr.am)
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m_video_type = re.search(r'<meta.*?property="og:video:type".*?content="video/(.*?)"', webpage)
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# We only look in og:video if the MIME type is a video, don't try if it's a Flash player:
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if m_video_type is not None:
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mobj = re.search(r'<meta.*?property="og:video".*?content="(.*?)"', webpage)
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if mobj is None:
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# HTML5 video
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mobj = re.search(r'<video[^<]*(?:>.*?<source.*?)? src="([^"]+)"', webpage, flags=re.DOTALL)
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if mobj is None:
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raise ExtractorError(u'Unsupported URL: %s' % url)
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# It's possible that one of the regexes
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# matched, but returned an empty group:
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if mobj.group(1) is None:
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raise ExtractorError(u'Did not find a valid video URL at %s' % url)
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video_url = mobj.group(1)
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video_url = compat_urlparse.urljoin(url, video_url)
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video_id = compat_urllib_parse.unquote(os.path.basename(video_url))
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# here's a fun little line of code for you:
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video_extension = os.path.splitext(video_id)[1][1:]
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video_id = os.path.splitext(video_id)[0]
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# it's tempting to parse this further, but you would
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# have to take into account all the variations like
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# Video Title - Site Name
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# Site Name | Video Title
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# Video Title - Tagline | Site Name
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# and so on and so forth; it's just not practical
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video_title = self._html_search_regex(r'<title>(.*)</title>',
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webpage, u'video title', default=u'video', flags=re.DOTALL)
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# video uploader is domain name
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video_uploader = self._search_regex(r'(?:https?://)?([^/]*)/.*',
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url, u'video uploader')
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return [{
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'id': video_id,
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'url': video_url,
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'uploader': video_uploader,
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'upload_date': None,
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'title': video_title,
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'ext': video_extension,
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}]
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