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Diffstat (limited to 'youtube_dl/extractor/grooveshark.py')
| -rw-r--r-- | youtube_dl/extractor/grooveshark.py | 200 |
1 files changed, 200 insertions, 0 deletions
diff --git a/youtube_dl/extractor/grooveshark.py b/youtube_dl/extractor/grooveshark.py new file mode 100644 index 000000000..6798addce --- /dev/null +++ b/youtube_dl/extractor/grooveshark.py @@ -0,0 +1,200 @@ +# coding: utf-8 +from __future__ import unicode_literals + +import time +import math +import re +from urlparse import urlparse, urlunparse, urldefrag +from urllib import quote, urlencode +from os.path import basename + +from .common import InfoExtractor +from ..utils import ExtractorError, compat_urllib_request, compat_html_parser + +class GroovesharkHtmlParser(compat_html_parser.HTMLParser): + def __init__(self): + self._current_object = None + self.objects = [] + compat_html_parser.HTMLParser.__init__(self) + + def handle_starttag(self, tag, attrs): + attrs = dict((k, v) for k, v in attrs) + if tag == 'object': + self._current_object = { 'attrs': attrs, 'params': [] } + elif tag == 'param': + self._current_object['params'].append(attrs) + + def handle_endtag(self, tag): + if tag == 'object': + self.objects.append(self._current_object) + self._current_object = None + + @classmethod + def extract_object_tags(cls, html): + p = cls() + p.feed(html) + p.close() + return p.objects + +class GroovesharkIE(InfoExtractor): + _VALID_URL = r'https?://(www\.)?grooveshark\.com/#!/s/([^/]+)/([^/]+)' + _TEST = { + 'url': 'http://grooveshark.com/#!/s/Jolene+Tenth+Key+Remix+Ft+Will+Sessions/6SS1DW?src=5', + 'md5': 'bbccc50b19daca23b8f961152c1dc95b', + 'info_dict': { + 'id': '6SS1DW', + 'title': 'Jolene (Tenth Key Remix ft. Will Sessions)', + 'ext': 'mp3', + 'duration': 227 + } + } + + do_playerpage_request = True + do_bootstrap_request = True + + def _parse_target(self, target): + uri = urlparse(target) + hash = uri.fragment[1:].split('?')[0] + token = basename(hash.rstrip('/')) + return (uri, hash, token) + + def _build_bootstrap_url(self, target): + (uri, hash, token) = self._parse_target(target) + query = 'getCommunicationToken=1&hash=%s&%d' % (quote(hash, safe=''), self.ts) + return (urlunparse((uri.scheme, uri.netloc, '/preload.php', None, query, None)), token) + + def _build_meta_url(self, target): + (uri, hash, token) = self._parse_target(target) + query = 'hash=%s&%d' % (quote(hash, safe=''), self.ts) + return (urlunparse((uri.scheme, uri.netloc, '/preload.php', None, query, None)), token) + + def _build_stream_url(self, meta): + return urlunparse(('http', meta['streamKey']['ip'], '/stream.php', None, None, None)) + + def _build_swf_referer(self, target, obj): + (uri, _, _) = self._parse_target(target) + return urlunparse((uri.scheme, uri.netloc, obj['attrs']['data'], None, None, None)) + + def _transform_bootstrap(self, js): + return re.split('^\s*try\s*{', js, flags=re.M)[0] \ + .split(' = ', 1)[1].strip().rstrip(';') + + def _transform_meta(self, js): + return js.split('\n')[0].split('=')[1].rstrip(';') + + def _get_meta(self, target): + (meta_url, token) = self._build_meta_url(target) + self.to_screen('Metadata URL: %s' % meta_url) + + headers = {'Referer': urldefrag(target)[0]} + req = compat_urllib_request.Request(meta_url, headers=headers) + res = self._download_json(req, token, + transform_source=self._transform_meta) + + if 'getStreamKeyWithSong' not in res: + raise ExtractorError( + 'Metadata not found. URL may be malformed, or Grooveshark API may have changed.') + + if res['getStreamKeyWithSong'] is None: + raise ExtractorError( + 'Metadata download failed, probably due to Grooveshark anti-abuse throttling. Wait at least an hour before retrying from this IP.', + expected=True) + + return res['getStreamKeyWithSong'] + + def _get_bootstrap(self, target): + (bootstrap_url, token) = self._build_bootstrap_url(target) + + headers = {'Referer': urldefrag(target)[0]} + req = compat_urllib_request.Request(bootstrap_url, headers=headers) + res = self._download_json(req, token, fatal=False, + note='Downloading player bootstrap data', + errnote='Unable to download player bootstrap data', + transform_source=self._transform_bootstrap) + return res + + def _get_playerpage(self, target): + (_, _, token) = self._parse_target(target) + + res = self._download_webpage( + target, token, + note='Downloading player page', + errnote='Unable to download player page', + fatal=False) + + if res is not None: + o = GroovesharkHtmlParser.extract_object_tags(res) + return (res, [x for x in o if x['attrs']['id'] == 'jsPlayerEmbed']) + + return (res, None) + + def _real_extract(self, url): + (target_uri, _, token) = self._parse_target(url) + + # 1. Fill cookiejar by making a request to the player page + if self.do_playerpage_request: + (_, player_objs) = self._get_playerpage(url) + if player_objs is not None: + swf_referer = self._build_swf_referer(url, player_objs[0]) + self.to_screen('SWF Referer: %s' % swf_referer) + + # 2. Ask preload.php for swf bootstrap data to better mimic webapp + if self.do_bootstrap_request: + bootstrap = self._get_bootstrap(url) + self.to_screen('CommunicationToken: %s' % bootstrap['getCommunicationToken']) + + # 3. Ask preload.php for track metadata. + meta = self._get_meta(url) + + # 4. Construct stream request for track. + stream_url = self._build_stream_url(meta) + duration = int(math.ceil(float(meta['streamKey']['uSecs']) / 1000000)) + post_dict = {'streamKey': meta['streamKey']['streamKey']} + post_data = urlencode(post_dict).encode('utf-8') + headers = { + 'Content-Length': len(post_data), + 'Content-Type': 'application/x-www-form-urlencoded' + } + + if 'swf_referer' in locals(): + headers['Referer'] = swf_referer + + req = compat_urllib_request.Request(streamurl, post_data, headers) + + info_dict = { + 'id': token, + 'title': meta['song']['Name'], + 'http_method': 'POST', + 'url': stream_url, + 'ext': 'mp3', + 'format': 'mp3 audio', + 'duration': duration, + + 'post_data': post_data, + 'post_dict': post_dict, + 'headers': headers, + 'request': req + } + + if 'swf_referer' in locals(): + info_dict['http_referer'] = swf_referer + + return info_dict + + def _real_initialize(self): + self.ts = int(time.time() * 1000) # timestamp in millis + + def _download_json(self, url_or_request, video_id, + note=u'Downloading JSON metadata', + errnote=u'Unable to download JSON metadata', + fatal=True, + transform_source=None): + try: + out = super(GroovesharkIE, self)._download_json( + url_or_request, video_id, note, errnote, transform_source) + return out + except ExtractorError as ee: + if fatal: + raise ee + return None + |