Source code for soco.music_services.music_service

# -*- coding: utf-8 -*-
# pylint: disable=fixme

"""Sonos Music Services interface.

This module provides the MusicService class and related functionality.

from __future__ import absolute_import, unicode_literals

import logging

import requests

from xmltodict import parse

from .. import discovery
from ..compat import parse_qs, quote_url, urlparse
from ..exceptions import MusicServiceException
from ..music_services.accounts import Account
from .data_structures import parse_response, MusicServiceItem
from ..soap import SoapFault, SoapMessage
from ..xml import XML

log = logging.getLogger(__name__)  # pylint: disable=C0103

# pylint: disable=too-many-instance-attributes, protected-access
[docs]class MusicServiceSoapClient(object): """A SOAP client for accessing Music Services. This class handles all the necessary authentication for accessing third party music services. You are unlikely to need to use it yourself. """ def __init__(self, endpoint, timeout, music_service): """ Args: endpoint (str): The SOAP endpoint. A url. timeout (int): Timeout the connection after this number of seconds. music_service (MusicService): The MusicService object to which this client belongs. """ self.endpoint = endpoint self.timeout = timeout self.music_service = music_service self.namespace = '' self._cached_soap_header = None # Spotify uses gzip. Others may do so as well. Unzipping is handled # for us by the requests library. Google Play seems to be very fussy # about the user-agent string. The firmware release number (after # 'Sonos/') has to be '26' for some reason to get Google Play to # work. Although we have access to a real SONOS user agent # string (one is returned, eg, in the SERVER header of discovery # packets and looks like this: Linux UPnP/1.0 Sonos/29.5-91030 ( # ZPS3)) it is a bit too much trouble here to access it, and Google # Play does not like it anyway. self.http_headers = { 'Accept-Encoding': 'gzip, deflate', 'User-Agent': 'Linux UPnP/1.0 Sonos/26.99-12345' } self._device = discovery.any_soco() self._device_id = self._device.systemProperties.GetString( [('VariableName', 'R_TrialZPSerial')])['StringValue']
[docs] def get_soap_header(self): """Generate the SOAP authentication header for the related service. This header contains all the necessary authentication details. Returns: str: A string representation of the XML content of the SOAP header. """ # According to the SONOS SMAPI, this header must be sent with all # SOAP requests. Building this is an expensive operation (though # occasionally necessary), so f we have a cached value, return it if self._cached_soap_header is not None: return self._cached_soap_header music_service = self.music_service credentials_header = XML.Element( "credentials", {'xmlns': ""}) device_id = XML.SubElement(credentials_header, 'deviceId') device_id.text = self._device_id device_provider = XML.SubElement(credentials_header, 'deviceProvider') device_provider.text = 'Sonos' if music_service.account.oa_device_id: # OAuth account credentials are present. We must use them to # authenticate. login_token = XML.Element('loginToken') token = XML.SubElement(login_token, 'token') token.text = music_service.account.oa_device_id key = XML.SubElement(login_token, 'key') key.text = music_service.account.key household_id = XML.SubElement(login_token, 'householdId') household_id.text = self._device.household_id credentials_header.append(login_token) # otherwise, perhaps use DeviceLink or UserId auth elif music_service.auth_type in ['DeviceLink', 'UserId']: # We need a session ID from Sonos session_id = self._device.musicServices.GetSessionId([ ('ServiceId', music_service.service_id), ('Username', music_service.account.username) ])['SessionId'] session_elt = XML.Element('sessionId') session_elt.text = session_id credentials_header.append(session_elt) # Anonymous auth. No need for anything further. self._cached_soap_header = XML.tostring( credentials_header, encoding='utf-8').decode(encoding='utf-8')
return self._cached_soap_header
[docs] def call(self, method, args=None): """Call a method on the server. Args: method (str): The name of the method to call. args (List[Tuple[str, str]] or None): A list of (parameter, value) pairs representing the parameters of the method. Defaults to `None`. Returns: ~collections.OrderedDict: An OrderedDict representing the response. Raises: `MusicServiceException`: containing details of the error returned by the music service. """ message = SoapMessage( endpoint=self.endpoint, method=method, parameters=[] if args is None else args, http_headers=self.http_headers, soap_action="" ".1#{0}".format(method), soap_header=self.get_soap_header(), namespace=self.namespace, timeout=self.timeout) try: result_elt = except SoapFault as exc: if 'Client.TokenRefreshRequired' in exc.faultcode: log.debug('Token refresh required. Trying again') # Remove any cached value for the SOAP header self._cached_soap_header = None # <detail> # <refreshAuthTokenResult> # <authToken>xxxxxxx</authToken> # <privateKey>zzzzzz</privateKey> # </refreshAuthTokenResult> # </detail> auth_token = exc.detail.findtext('.//authToken') private_key = exc.detail.findtext('.//privateKey') # We have new details - update the account self.music_service.account.oa_device_id = auth_token self.music_service.account.key = private_key message = SoapMessage( endpoint=self.endpoint, method=method, parameters=args, http_headers=self.http_headers, soap_action="" ".1#{0}".format(method), soap_header=self.get_soap_header(), namespace=self.namespace, timeout=self.timeout) result_elt = else: raise MusicServiceException(exc.faultstring, exc.faultcode) # The top key in the OrderedDict will be the methodResult. Its # value may be None if no results were returned. result = list(parse( XML.tostring(result_elt), process_namespaces=True, namespaces={'': None} ).values())[0]
return result if result is not None else {} # pylint: disable=too-many-instance-attributes
[docs]class MusicService(object): """The MusicService class provides access to third party music services. Example: List all the services Sonos knows about: >>> from soco.music_services import MusicService >>> print(MusicService.get_all_music_services_names()) ['Spotify', 'The Hype Machine', 'Saavn', 'Bandcamp', 'Stitcher SmartRadio', 'Concert Vault', ... ] Or just those to which you are subscribed: >>> print(MusicService.get_subscribed_services_names()) ['Spotify', 'radioPup', 'Spreaker'] Interact with TuneIn: >>> tunein = MusicService('TuneIn') >>> print (tunein) <MusicService 'TuneIn' at 0x10ad84e10> Browse an item. By default, the root item is used. An :class:`~collections.OrderedDict` is returned: >>> from json import dumps # Used for pretty printing ordereddicts >>> print(dumps(tunein.get_metadata(), indent=4)) { "index": "0", "count": "7", "total": "7", "mediaCollection": [ { "id": "featured:c100000150", "title": "Blue Note on SONOS", "itemType": "container", "authRequired": "false", "canPlay": "false", "canEnumerate": "true", "canCache": "true", "homogeneous": "false", "canAddToFavorite": "false", "canScroll": "false", "albumArtURI": "" }, { "id": "y1", "title": "Music", "itemType": "container", "authRequired": "false", "canPlay": "false", "canEnumerate": "true", "canCache": "true", "homogeneous": "false", "canAddToFavorite": "false", "canScroll": "false", "albumArtURI": " .png" }, ... ] } Interact with Spotify (assuming you are subscribed): >>> spotify = MusicService('Spotify') Get some metadata about a specific track: >>> response = spotify.get_media_metadata( ... item_id='spotify:track:6NmXV4o6bmp704aPGyTVVG') >>> print(dumps(response, indent=4)) { "mediaMetadata": { "id": "spotify:track:6NmXV4o6bmp704aPGyTVVG", "itemType": "track", "title": "B\u00f8n Fra Helvete (Live)", "mimeType": "audio/x-spotify", "trackMetadata": { "artistId": "spotify:artist:1s1DnVoBDfp3jxjjew8cBR", "artist": "Kaizers Orchestra", "albumId": "spotify:album:6K8NUknbPh5TGaKeZdDwSg", "album": "Mann Mot Mann (Ep)", "duration": "317", "albumArtURI": "", "canPlay": "true", "canSkip": "true", "canAddToFavorites": "true" } } } or even a playlist: >>> response = spotify.get_metadata( ... item_id='spotify:user:spotify:playlist:0FQk6BADgIIYd3yTLCThjg') Find the available search categories, and use them: >>> print(spotify.available_search_categories) ['albums', 'tracks', 'artists'] >>> result ='artists', term='miles') Note: Some of this code is still unstable, and in particular the data structures returned by methods such as `get_metadata` may change in future. """ _music_services_data = None def __init__(self, service_name, account=None): """ Args: service_name (str): The name of the music service, as returned by `get_all_music_services_names()`, eg 'Spotify', or 'TuneIn' account (Account): The account to use to access this service. If none is specified, one will be chosen automatically if possible. Defaults to `None`. Raises: `MusicServiceException` """ self.service_name = service_name # Look up the data for this service data = self.get_data_for_name(service_name) self.uri = data['Uri'] self.secure_uri = data['SecureUri'] self.capabilities = data['Capabilities'] self.version = data['Version'] self.container_type = data['ContainerType'] self.service_id = data['Id'] # Auth_type can be 'Anonymous', 'UserId, 'DeviceLink' self.auth_type = data['Auth'] self.presentation_map_uri = data.get('PresentationMapUri', None) self._search_prefix_map = None self.service_type = data['ServiceType'] if account is not None: self.account = account else: # try to find an account for this service for acct in Account.get_accounts().values(): if acct.service_type == self.service_type: self.account = acct break else: raise MusicServiceException( "No account found for service: '%s'" % service_name) self.soap_client = MusicServiceSoapClient( endpoint=self.secure_uri, timeout=9, # The default is 60 music_service=self ) def __repr__(self): return '<{0} \'{1}\' at {2}>'.format(self.__class__.__name__, self.service_name, hex(id(self))) def __str__(self): return self.__repr__() @staticmethod def _get_music_services_data_xml(soco=None): """Fetch the music services data xml from a Sonos device. Args: soco (SoCo): a SoCo instance to query. If none is specified, a random device will be used. Defaults to `None`. Returns: str: a string containing the music services data xml """ device = soco or discovery.any_soco() log.debug("Fetching music services data from %s", device) available_services = device.musicServices.ListAvailableServices() descriptor_list_xml = available_services[ 'AvailableServiceDescriptorList'] log.debug("Services descriptor list: %s", descriptor_list_xml) return descriptor_list_xml @classmethod def _get_music_services_data(cls): """Parse raw account data xml into a useful python datastructure. Returns: dict: Each key is a service_type, and each value is a `dict` containing relevant data. """ # Return from cache if we have it. if cls._music_services_data is not None: return cls._music_services_data result = {} root = XML.fromstring( cls._get_music_services_data_xml().encode('utf-8') ) # <Services SchemaVersion="1"> # <Service Id="163" Name="Spreaker" Version="1.1" # Uri="" # SecureUri="" # ContainerType="MService" # Capabilities="513" # MaxMessagingChars="0"> # <Policy Auth="Anonymous" PollInterval="30" /> # <Presentation> # <Strings # Version="1" # Uri="https:...string_table.xml" /> # <PresentationMap Version="2" # Uri="https://...presentation_map.xml" /> # </Presentation> # </Service> # ... # </ Services> # Ideally, the search path should be './/Service' to find Service # elements at any level, but Python 2.6 breaks with this if Service # is a child of the current element. Since 'Service' works here, we use # that instead services = root.findall('Service') for service in services: result_value = service.attrib.copy() name = service.get('Name') result_value['Name'] = name auth_element = (service.find('Policy')) auth = auth_element.attrib result_value.update(auth) presentation_element = (service.find('.//PresentationMap')) if presentation_element is not None: result_value['PresentationMapUri'] = \ presentation_element.get('Uri') result_value['ServiceID'] = service.get('Id') # ServiceType is used elsewhere in Sonos, eg to form tokens, # and get_subscribed_music_services() below. It is also the # 'Type' used in account_xml (see above). Its value always # seems to be (ID*256) + 7. Some serviceTypes are also # listed in available_services['AvailableServiceTypeList'] # but this does not seem to be comprehensive service_type = str(int(service.get('Id')) * 256 + 7) result_value['ServiceType'] = service_type result[service_type] = result_value # Cache this so we don't need to do it again. cls._music_services_data = result return result
[docs] @classmethod def get_all_music_services_names(cls): """Get a list of the names of all available music services. These services have not necessarily been subscribed to. Returns: list: A list of strings. """ return [ service['Name'] for service in cls._get_music_services_data().values()
[docs] @classmethod def get_subscribed_services_names(cls): """Get a list of the names of all subscribed music services. Returns: list: A list of strings. """ # This is very inefficient - loops within loops within loops, and # many network requests # Optimise it? accounts_for_service = Account.get_accounts_for_service service_data = cls._get_music_services_data().values() return [ service['Name'] for service in service_data if len( accounts_for_service(service['ServiceType']) ) > 0
[docs] @classmethod def get_data_for_name(cls, service_name): """Get the data relating to a named music service. Args: service_name (str): The name of the music service for which data is required. Returns: dict: Data relating to the music service. Raises: `MusicServiceException`: if the music service cannot be found. """ for service in cls._get_music_services_data().values(): if service_name == service["Name"]: return service raise MusicServiceException(
"Unknown music service: '%s'" % service_name) def _get_search_prefix_map(self): """Fetch and parse the service search category mapping. Standard Sonos search categories are 'all', 'artists', 'albums', 'tracks', 'playlists', 'genres', 'stations', 'tags'. Not all are available for each music service """ # TuneIn does not have a pmap. Its search keys are is search:station, # search:show, search:host # Presentation maps can also define custom categories. See eg # # <SearchCategories> # ... # <CustomCategory mappedId="SBLG" stringId="Blogs"/> # </SearchCategories> # Is it already cached? If so, return it if self._search_prefix_map is not None: return self._search_prefix_map # Not cached. Fetch and parse presentation map self._search_prefix_map = {} # Tunein is a special case. It has no pmap, but supports searching if self.service_name == "TuneIn": self._search_prefix_map = { 'stations': 'search:station', 'shows': 'search:show', 'hosts': 'search:host', } return self._search_prefix_map if self.presentation_map_uri is None: # Assume not searchable? return self._search_prefix_map'Fetching presentation map from %s', self.presentation_map_uri) pmap = requests.get(self.presentation_map_uri, timeout=9) pmap_root = XML.fromstring(pmap.content) # Search translations can appear in Category or CustomCategory elements categories = pmap_root.findall(".//SearchCategories/Category") if categories is None: return self._search_prefix_map for cat in categories: self._search_prefix_map[cat.get('id')] = cat.get('mappedId') custom_categories = pmap_root.findall( ".//SearchCategories/CustomCategory") for cat in custom_categories: self._search_prefix_map[cat.get('stringId')] = cat.get('mappedId') return self._search_prefix_map @property def available_search_categories(self): """list: The list of search categories (each a string) supported. May include ``'artists'``, ``'albums'``, ``'tracks'``, ``'playlists'``, ``'genres'``, ``'stations'``, ``'tags'``, or others depending on the service. Some services, such as Spotify, support ``'all'``, but do not advertise it. Any of the categories in this list may be used as a value for ``category`` in :meth:`search`. Example: >>> print(spotify.available_search_categories) ['albums', 'tracks', 'artists'] >>> result ='artists', term='miles') """ return self._get_search_prefix_map().keys()
[docs] def sonos_uri_from_id(self, item_id): """Get a uri which can be sent for playing. Args: item_id (str): The unique id of a playable item for this music service, such as that returned in the metadata from `get_metadata`, eg ``spotify:track:2qs5ZcLByNTctJKbhAZ9JE`` Returns: str: A URI of the form: ``soco://spotify%3Atrack %3A2qs5ZcLByNTctJKbhAZ9JE?sid=2311&sn=1`` which encodes the ``item_id``, and relevant data from the account for the music service. This URI can be sent to a Sonos device for playing, and the device itself will retrieve all the necessary metadata such as title, album etc. """ # Real Sonos URIs look like this: # x-sonos-http:tr%3a92352286.mp3?sid=2&flags=8224&sn=4 The # extension (.mp3) presumably comes from the mime-type returned in a # MusicService.get_metadata() result (though for Spotify the mime-type # is audio/x-spotify, and there is no extension. See # for supported mime-types and # related extensions). The scheme (x-sonos-http) presumably # indicates how the player is to obtain the stream for playing. It # is not clear what the flags param is used for (perhaps bitrate, # or certain metadata such as canSkip?). Fortunately, none of these # seems to be necessary. We can leave them out, (or in the case of # the scheme, use 'soco' as dummy text, and the players still seem # to do the right thing. # quote_url will break if given unicode on Py2.6, and early 2.7. So # we need to encode. item_id = quote_url(item_id.encode('utf-8')) # Add the account info to the end as query params account = self.account result = "soco://{}?sid={}&sn={}".format( item_id, self.service_id, account.serial_number )
return result @property def desc(self): """str: The Sonos descriptor to use for this service. The Sonos descriptor is used as the content of the <desc> tag in DIDL metadata, to indicate the relevant music service id and username. """ desc = "SA_RINCON{}_{}".format( self.account.service_type, self.account.username ) return desc ######################################################################## # # # SOAP METHODS. # # # ######################################################################## # Looking at various services, we see that the following SOAP methods # are implemented, but not all in each service. Probably, the # Capabilities property indicates which features are implemented, but # it is not clear precisely how. Some of the more common/useful # features have been wrapped into instance methods, below. # See generally: # createItem(xs:string favorite) # createTrialAccount(xs:string deviceId) # deleteItem(xs:string favorite) # getAccount() # getExtendedMetadata(xs:string id) # getExtendedMetadataText(xs:string id, xs:string Type) # getLastUpdate() # getMediaMetadata(xs:string id) # getMediaURI(xs:string id) # getMetadata(xs:string id, xs:int index, xs:int count,xs:boolean # recursive) # getScrollIndices(xs:string id) # getSessionId(xs:string username, xs:string password) # mergeTrialccount(xs:string deviceId) # rateItem(id id, xs:integer rating) # search(xs:string id, xs:string term, xs:string index, xs:int count) # setPlayedSeconds(id id, xs:int seconds)
[docs] def get_metadata( self, item='root', index=0, count=100, recursive=False): """Get metadata for a container or item. Args: item (str or MusicServiceItem): The container or item to browse given either as a MusicServiceItem instance or as a str. Defaults to the root item. index (int): The starting index. Default 0. count (int): The maximum number of items to return. Default 100. recursive (bool): Whether the browse should recurse into sub-items (Does not always work). Defaults to `False`. Returns: ~collections.OrderedDict: The item or container's metadata, or `None`. See also: The Sonos `getMetadata API <>`_. """ if isinstance(item, MusicServiceItem): item_id = # pylint: disable=no-member else: item_id = item response = 'getMetadata', [ ('id', item_id), ('index', index), ('count', count), ('recursive', 1 if recursive else 0)] )
return parse_response(self, response, 'browse')
[docs] def search(self, category, term='', index=0, count=100): """Search for an item in a category. Args: category (str): The search category to use. Standard Sonos search categories are 'artists', 'albums', 'tracks', 'playlists', 'genres', 'stations', 'tags'. Not all are available for each music service. Call available_search_categories for a list for this service. term (str): The term to search for. index (int): The starting index. Default 0. count (int): The maximum number of items to return. Default 100. Returns: ~collections.OrderedDict: The search results, or `None`. See also: The Sonos `search API <>`_ """ search_category = self._get_search_prefix_map().get(category, None) if search_category is None: raise MusicServiceException( "%s does not support the '%s' search category" % ( self.service_name, category)) response = 'search', [ ('id', search_category), ('term', term), ('index', index), ('count', count)])
return parse_response(self, response, category)
[docs] def get_media_metadata(self, item_id): """Get metadata for a media item. Args: item_id (str): The item for which metadata is required. Returns: ~collections.OrderedDict: The item's metadata, or `None` See also: The Sonos `getMediaMetadata API <>`_ """ response = 'getMediaMetadata', [('id', item_id)])
return response.get('getMediaMetadataResult', None)
[docs] def get_media_uri(self, item_id): """Get a streaming URI for an item. Note: You should not need to use this directly. It is used by the Sonos players (not the controllers) to obtain the uri of the media stream. If you want to have a player play a media item, you should add add it to the queue using its id and let the player work out where to get the stream from (see `On Demand Playback <>`_ and `Programmed Radio <>`_) Args: item_id (str): The item for which the URI is required Returns: str: The item's streaming URI. """ response = 'getMediaURI', [('id', item_id)])
return response.get('getMediaURIResult', None)
[docs] def get_last_update(self): """Get last_update details for this music service. Returns: ~collections.OrderedDict: A dict with keys 'catalog', and 'favorites'. The value of each is a string which changes each time the catalog or favorites change. You can use this to detect when any caches need to be updated. """ # TODO: Maybe create a favorites/catalog cache which is invalidated # TODO: when these values change? response ='getLastUpdate')
return response.get('getLastUpdateResult', None)
[docs] def get_extended_metadata(self, item_id): """Get extended metadata for a media item, such as related items. Args: item_id (str): The item for which metadata is required. Returns: ~collections.OrderedDict: The item's extended metadata or None. See also: The Sonos `getExtendedMetadata API <>`_ """ response = 'getExtendedMetadata', [('id', item_id)])
return response.get('getExtendedMetadataResult', None)
[docs] def get_extended_metadata_text(self, item_id, metadata_type): """Get extended metadata text for a media item. Args: item_id (str): The item for which metadata is required metadata_type (str): The type of text to return, eg ``'ARTIST_BIO'``, or ``'ALBUM_NOTES'``. Calling `get_extended_metadata` for the item will show which extended metadata_types are available (under relatedBrowse and relatedText). Returns: str: The item's extended metadata text or None See also: The Sonos `getExtendedMetadataText API <>`_ """ response = 'getExtendedMetadataText', [('id', item_id), ('type', metadata_type)])
return response.get('getExtendedMetadataTextResult', None)
[docs]def desc_from_uri(uri): """Create the content of DIDL desc element from a uri. Args: uri (str): A uri, eg: ``'x-sonos-http:track%3a3402413.mp3?sid=2&amp;flags=32&amp;sn=4'`` Returns: str: The content of a desc element for that uri, eg ``''`` """ # # If there is an sn parameter (which is the serial number of an account), # we can obtain all the information we need from that, because we can find # the relevant service_id in the account database (it is the same as the # service_type). Consequently, the sid parameter is unneeded. But if sn is # missing, we need the sid (service_type) parameter to find a relevant # account # urlparse does not work consistently with custom URI schemes such as # those used by Sonos. This is especially broken in Python 2.6 and # early versions of 2.7: # As a workaround, we split off the scheme manually, and then parse # the uri as if it were http if ":" in uri: _, uri = uri.split(":", 1) query_string = parse_qs(urlparse(uri, 'http').query) # Is there an account serial number? if query_string.get('sn'): account_serial_number = query_string['sn'][0] try: account = Account.get_accounts()[account_serial_number] desc = "SA_RINCON{}_{}".format( account.service_type, account.username) return desc except KeyError: # There is no account matching this serial number. Fall back to # using the service id to find an account pass if query_string.get('sid'): service_id = query_string['sid'][0] for service in MusicService._get_music_services_data().values(): if service_id == service["ServiceID"]: service_type = service["ServiceType"] account = Account.get_accounts_for_service(service_type) if not account: break # Use the first account we find account = account[0] desc = "SA_RINCON{}_{}".format( account.service_type, account.username) return desc # Nothing found. Default to the standard desc value. Is this the right # thing to do? desc = 'RINCON_AssociatedZPUDN'
return desc