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# coding: utf-8from __future__ import unicode_literals
import timeimport mathimport os.pathimport re
from .common import InfoExtractorfrom ..compat import ( compat_html_parser, compat_urllib_parse, compat_urllib_request, compat_urlparse,)from ..utils import ExtractorError
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': '7ecf8aefa59d6b2098517e1baa530023', '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 = compat_urlparse.urlparse(target) hash = uri.fragment[1:].split('?')[0] token = os.path.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' % (compat_urllib_parse.quote(hash, safe=''), self.ts) return (compat_urlparse.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' % (compat_urllib_parse.quote(hash, safe=''), self.ts) return (compat_urlparse.urlunparse((uri.scheme, uri.netloc, '/preload.php', None, query, None)), token)
def _build_stream_url(self, meta): return compat_urlparse.urlunparse(('http', meta['streamKey']['ip'], '/stream.php', None, None, None))
def _build_swf_referer(self, target, obj): (uri, _, _) = self._parse_target(target) return compat_urlparse.urlunparse((uri.scheme, uri.netloc, obj['attrs']['data'], None, None, None))
def _transform_bootstrap(self, js): return re.split('(?m)^\s*try\s*\{', js)[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': compat_urlparse.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': compat_urlparse.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)
webpage = self._download_webpage( target, token, note='Downloading player page', errnote='Unable to download player page', fatal=False)
if webpage is not None: # Search (for example German) error message error_msg = self._html_search_regex( r'<div id="content">\s*<h2>(.*?)</h2>', webpage, 'error message', default=None) if error_msg is not None: error_msg = error_msg.replace('\n', ' ') raise ExtractorError('Grooveshark said: %s' % error_msg)
if webpage is not None: o = GroovesharkHtmlParser.extract_object_tags(webpage) return webpage, [x for x in o if x['attrs']['id'] == 'jsPlayerEmbed']
return webpage, None
def _real_initialize(self): self.ts = int(time.time() * 1000) # timestamp in millis
def _real_extract(self, url): (target_uri, _, token) = self._parse_target(url)
# 1. Fill cookiejar by making a request to the player page swf_referer = None if self.do_playerpage_request: (_, player_objs) = self._get_playerpage(url) if player_objs: 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 = compat_urllib_parse.urlencode(post_dict).encode('utf-8') headers = { 'Content-Length': len(post_data), 'Content-Type': 'application/x-www-form-urlencoded' } if swf_referer is not None: headers['Referer'] = swf_referer
return { 'id': token, 'title': meta['song']['Name'], 'http_method': 'POST', 'url': stream_url, 'ext': 'mp3', 'format': 'mp3 audio', 'duration': duration, 'http_post_data': post_data, 'http_headers': headers, }
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