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# coding: utf-8
from __future__ import unicode_literals
import time
import math
import re
from urllib import quote, urlencode
from os.path import basename
from .common import InfoExtractor
from ..utils import ExtractorError, compat_urllib_request, compat_html_parser
from ..utils import compat_urlparse
urlparse = compat_urlparse.urlparse
urlunparse = compat_urlparse.urlunparse
urldefrag = compat_urlparse.urldefrag
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('(?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': 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
info_dict = {
'id': token,
'title': meta['song']['Name'],
'http_method': 'POST',
'url': stream_url,
'ext': 'mp3',
'format': 'mp3 audio',
'duration': duration,
# various ways of supporting the download request.
# remove keys unnecessary to the eventual post implementation
'post_data': post_data,
'post_dict': post_dict,
'headers': headers
}
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
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