youtube-dl/youtube_dl/extractor/grooveshark.py

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# coding: utf-8
from __future__ import unicode_literals
import time
import math
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import os.path
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import re
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from .common import InfoExtractor
from ..utils import ExtractorError, compat_urllib_request, compat_html_parser
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from ..utils import (
compat_urllib_parse,
compat_urlparse,
)
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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':
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self._current_object = {'attrs': attrs, 'params': []}
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elif tag == 'param':
self._current_object['params'].append(attrs)
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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
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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',
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'md5': '7ecf8aefa59d6b2098517e1baa530023',
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'info_dict': {
'id': '6SS1DW',
'title': 'Jolene (Tenth Key Remix ft. Will Sessions)',
'ext': 'mp3',
'duration': 227,
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}
}
do_playerpage_request = True
do_bootstrap_request = True
def _parse_target(self, target):
uri = compat_urlparse.urlparse(target)
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hash = uri.fragment[1:].split('?')[0]
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token = os.path.basename(hash.rstrip('/'))
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return (uri, hash, token)
def _build_bootstrap_url(self, target):
(uri, hash, token) = self._parse_target(target)
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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)
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def _build_meta_url(self, target):
(uri, hash, token) = self._parse_target(target)
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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)
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def _build_stream_url(self, meta):
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return compat_urlparse.urlunparse(('http', meta['streamKey']['ip'], '/stream.php', None, None, None))
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def _build_swf_referer(self, target, obj):
(uri, _, _) = self._parse_target(target)
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return compat_urlparse.urlunparse((uri.scheme, uri.netloc, obj['attrs']['data'], None, None, None))
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def _transform_bootstrap(self, js):
return re.split('(?m)^\s*try\s*{', js)[0] \
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.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)
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headers = {'Referer': compat_urlparse.urldefrag(target)[0]}
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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)
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headers = {'Referer': compat_urlparse.urldefrag(target)[0]}
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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
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def _get_playerpage(self, target):
(_, _, token) = self._parse_target(target)
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webpage = self._download_webpage(
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target, token,
note='Downloading player page',
errnote='Unable to download player page',
fatal=False)
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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)
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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
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def _real_extract(self, url):
(target_uri, _, token) = self._parse_target(url)
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# 1. Fill cookiejar by making a request to the player page
swf_referer = None
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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'])
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# 3. Ask preload.php for track metadata.
meta = self._get_meta(url)
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# 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']}
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post_data = compat_urllib_parse.urlencode(post_dict).encode('utf-8')
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headers = {
'Content-Length': len(post_data),
'Content-Type': 'application/x-www-form-urlencoded'
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}
if swf_referer is not None:
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headers['Referer'] = swf_referer
return {
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'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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}