211 lines
7 KiB
Python
211 lines
7 KiB
Python
import logging
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from twisted.internet import defer
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import treq
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import re
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from xml.etree import ElementTree
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from txupnp.util import etree_to_dict, flatten_keys, get_dict_val_case_insensitive
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from txupnp.util import BASE_PORT_REGEX, BASE_ADDRESS_REGEX
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from txupnp.constants import DEVICE, ROOT
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from txupnp.constants import SPEC_VERSION
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log = logging.getLogger(__name__)
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service_type_pattern = re.compile(
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"(?i)(\{|(urn:schemas-[\w|\d]*-(com|org|net))[:|-](device|service)[:|-]([\w|\d|\:|\-|\_]*)|\})"
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)
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xml_root_sanity_pattern = re.compile(
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"(?i)(\{|(urn:schemas-[\w|\d]*-(com|org|net))[:|-](device|service)[:|-]([\w|\d|\:|\-|\_]*)|\}([\w|\d|\:|\-|\_]*))"
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)
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class CaseInsensitive(object):
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def __init__(self, **kwargs):
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not_evaluated = {}
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for k, v in kwargs.items():
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if k.startswith("_"):
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not_evaluated[k] = v
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continue
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try:
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getattr(self, k)
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setattr(self, k, v)
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except AttributeError as err:
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not_evaluated[k] = v
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if not_evaluated:
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log.warning("%s did not apply kwargs: %s", self.__class__.__name__, not_evaluated)
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def _get_attr_name(self, case_insensitive):
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for k, v in self.__dict__.items():
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if k.lower() == case_insensitive.lower():
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return k
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def __getattr__(self, item):
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if item in self.__dict__:
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return self.__dict__[item]
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for k, v in self.__class__.__dict__.items():
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if k.lower() == item.lower():
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if k not in self.__dict__:
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self.__dict__[k] = v
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return v
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raise AttributeError(item)
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def __setattr__(self, item, value):
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if item in self.__dict__:
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self.__dict__[item] = value
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return
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to_update = None
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for k, v in self.__dict__.items():
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if k.lower() == item.lower():
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to_update = k
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break
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self.__dict__[to_update or item] = value
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def as_dict(self):
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return {
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k: v for k, v in self.__dict__.items() if not k.startswith("_") and not callable(v)
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}
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class Service(CaseInsensitive):
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serviceType = None
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serviceId = None
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controlURL = None
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eventSubURL = None
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SCPDURL = None
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class Device(CaseInsensitive):
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serviceList = None
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deviceList = None
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deviceType = None
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friendlyName = None
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manufacturer = None
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manufacturerURL = None
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modelDescription = None
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modelName = None
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modelNumber = None
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modelURL = None
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serialNumber = None
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udn = None
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upc = None
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presentationURL = None
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iconList = None
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def __init__(self, devices, services, **kwargs):
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super(Device, self).__init__(**kwargs)
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if self.serviceList and "service" in self.serviceList:
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new_services = self.serviceList["service"]
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if isinstance(new_services, dict):
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new_services = [new_services]
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services.extend([Service(**service) for service in new_services])
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if self.deviceList:
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for kw in self.deviceList.values():
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if isinstance(kw, dict):
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d = Device(devices, services, **kw)
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devices.append(d)
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elif isinstance(kw, list):
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for _inner_kw in kw:
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d = Device(devices, services, **_inner_kw)
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devices.append(d)
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else:
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log.warning("failed to parse device:\n%s", kw)
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class Gateway(object):
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def __init__(self, **kwargs):
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flattened = {
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k.lower(): v for k, v in kwargs.items()
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}
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usn = flattened["usn"]
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server = flattened["server"]
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location = flattened["location"]
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st = flattened["st"]
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cache_control = flattened.get("cache_control") or flattened.get("cache-control") or ""
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date = flattened.get("date", "")
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ext = flattened.get("ext", "")
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self.usn = usn.encode()
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self.ext = ext.encode()
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self.server = server.encode()
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self.location = location.encode()
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self.cache_control = cache_control.encode()
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self.date = date.encode()
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self.urn = st.encode()
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self.base_address = BASE_ADDRESS_REGEX.findall(self.location)[0]
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self.port = int(BASE_PORT_REGEX.findall(self.location)[0])
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self.xml_response = None
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self.spec_version = None
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self.url_base = None
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self._device = None
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self._devices = []
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self._services = []
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def debug_device(self, include_xml=False, include_services=True):
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r = {
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'server': self.server,
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'urlBase': self.url_base,
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'location': self.location,
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"specVersion": self.spec_version,
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'usn': self.usn,
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'urn': self.urn,
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'devices': [device.as_dict() for device in self._devices]
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}
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if include_xml:
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r['xml_response'] = self.xml_response
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if include_services:
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r['services'] = [service.as_dict() for service in self._services]
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return r
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@defer.inlineCallbacks
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def discover_services(self):
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log.debug("querying %s", self.location)
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response = yield treq.get(self.location)
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self.xml_response = yield response.content()
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if not self.xml_response:
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log.warning("service sent an empty reply\n%s", self.debug_device())
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xml_dict = etree_to_dict(ElementTree.fromstring(self.xml_response))
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schema_key = DEVICE
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root = ROOT
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if len(xml_dict) > 1:
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log.warning(xml_dict.keys())
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for k in xml_dict.keys():
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m = xml_root_sanity_pattern.findall(k)
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if len(m) == 3 and m[1][0] and m[2][5]:
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schema_key = m[1][0]
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root = m[2][5]
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break
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flattened_xml = flatten_keys(xml_dict, "{%s}" % schema_key)[root]
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self.spec_version = get_dict_val_case_insensitive(flattened_xml, SPEC_VERSION)
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self.url_base = get_dict_val_case_insensitive(flattened_xml, "urlbase")
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if flattened_xml:
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self._device = Device(
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self._devices, self._services, **get_dict_val_case_insensitive(flattened_xml, "device")
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)
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log.debug("finished setting up root gateway. %i devices and %i services", len(self.devices),
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len(self.services))
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else:
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self._device = Device(self._devices, self._services)
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log.debug("finished setting up gateway:\n%s", self.debug_device())
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@property
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def services(self):
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if not self._device:
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return {}
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return {service.serviceType: service for service in self._services}
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@property
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def devices(self):
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if not self._device:
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return {}
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return {device.udn: device for device in self._devices}
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def get_service(self, service_type):
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for service in self._services:
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if service.serviceType.lower() == service_type.lower():
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return service
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