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import ssl
import json
import os
from urllib.request import Request, build_opener, HTTPSHandler
from .security_utils import SecurityUtils
from .constant import (
RATLS_CONNECTIVITY_PATH,
RATLS_TOKEN_GENERATE_PATH,
CREATE_DEVICE_CERTS_PATH
)
class ArloRatls(object):
def __init__(self, arlo, base, public=False):
self._base_connection_details = None
self._base_station_token = None
self._arlo = arlo
self._base = base
self._public = public
self._unique_id = base.unique_id
self._device_id = base.device_id
self._security = SecurityUtils(arlo.cfg.storage_dir)
self._check_device_certs()
self.open_port()
def open_port(self):
""" RATLS port will automatically close after 10 minutes """
self._base_station_token = self._get_station_token()
self._arlo.debug(f"Opening port for {self._unique_id}")
response = self._arlo.be.notify(
self._base,
{
"action": "open",
"resource": "storage/ratls",
"from": self._base.user_id,
"publishResponse": True
},
wait_for="event"
)
if response is None or not response['success']:
raise Exception(f"Failed to open ratls port: {response}")
self._base_connection_details = response['properties']
self._setup_base_client()
response = self.get(RATLS_CONNECTIVITY_PATH)
if response is None or not response['success']:
raise Exception(f"Failed to gain connectivity to ratls!")
return self._base_connection_details
def get(self, path, raw=False):
request = Request(f"{self.url}{path}")
request.get_method = lambda: 'GET'
for (k, v) in self._ratls_req_headers().items():
request.add_header(k, v)
try:
response = self._base_client.open(request)
if raw:
return response
return json.loads(response.read())
except Exception as e:
self._arlo.warning("request-error={}".format(type(e).__name__))
return None
def _ratls_req_headers(self):
return {
"Authorization": f"Bearer {self._base_station_token}",
"Accept": "application/json; charset=utf-8;",
"Accept-Language": "en-US,en;q=0.9",
"Origin": "https://my.arlo.com",
"SchemaVersion": "1",
"User-Agent": self._arlo.be.user_agent(self._arlo.cfg.user_agent)
}
def _get_station_token(self):
""" Tokens expire after 10 minutes """
self._arlo.debug(f"Fetching token for {self._device_id}")
response = self._arlo.be.get(
RATLS_TOKEN_GENERATE_PATH + f"/{self._device_id}"
)
if response is None or not 'ratlsToken' in response:
raise Exception(f"Failed get station token: {response}")
return response['ratlsToken']
def _setup_base_client(self):
certs_path = self._security.certs_path
device_certs_path = self._security.device_certs_path(self._unique_id)
self._sslcontext = ssl.create_default_context(cafile=os.path.join(certs_path, "ica.crt"))
# We are providing certs for the base station to trust us
self._sslcontext.load_cert_chain(os.path.join(device_certs_path, "peer.crt"), self._security.private_key_path)
# ... but we cannot validate the base station's certificate
self._sslcontext.check_hostname = False
self._sslcontext.verify_mode = ssl.CERT_NONE
self._base_client = build_opener(HTTPSHandler(context=self._sslcontext))
def _check_device_certs(self):
self._arlo.debug(f"Checking for existing certificates for {self._unique_id}")
if not self._security.has_device_certs(self._unique_id):
response = self._arlo.be.post(
CREATE_DEVICE_CERTS_PATH,
params={
"uuid": self._device_id,
"uniqueIds": [
self._unique_id
],
"publicKey": self._security.public_key.replace("\n", "").replace("-----BEGIN PUBLIC KEY-----", "").replace("-----END PUBLIC KEY-----", ""),
},
headers={"xcloudId": self._base.xcloud_id},
raw=True
)
if not response["success"]:
raise Exception(f"Error getting certs: {response['message']} - {response['reason']}")
self._arlo.debug(f"Saving certificates for {self._unique_id}")
self._security.save_device_certs(self._unique_id, response["data"])
@property
def security(self):
return self._security
@property
def url(self):
if self._public:
return self.publicUrl
else:
return self.privateUrl
@property
def privateIp(self):
return self._base_connection_details['privateIP']
@property
def publicIp(self):
return self._base_connection_details['publicIP']
@property
def port(self):
return self._base_connection_details['port']
@property
def privateUrl(self):
return f"https://{self.privateIp}:{self.port}"
@property
def publicUrl(self):
return f"https://{self.publicIp}:{self.port}"
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