core/homeassistant/components/camera/generic.py

"""
homeassistant.components.camera.generic
~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
Support for IP Cameras.

For more details about this platform, please refer to the documentation at
https://home-assistant.io/components/camera.generic.html
"""
import logging
from requests.auth import HTTPBasicAuth
from homeassistant.helpers import validate_config
from homeassistant.components.camera import DOMAIN
from homeassistant.components.camera import Camera
import requests

_LOGGER = logging.getLogger(__name__)


# pylint: disable=unused-argument
def setup_platform(hass, config, add_devices_callback, discovery_info=None):
    """ Adds a generic IP Camera. """
    if not validate_config({DOMAIN: config}, {DOMAIN: ['still_image_url']},
                           _LOGGER):
        return None

    add_devices_callback([GenericCamera(config)])


# pylint: disable=too-many-instance-attributes
class GenericCamera(Camera):
    """
    A generic implementation of an IP camera that is reachable over a URL.
    """

    def __init__(self, device_info):
        super().__init__()
        self._name = device_info.get('name', 'Generic Camera')
        self._username = device_info.get('username')
        self._password = device_info.get('password')
        self._still_image_url = device_info['still_image_url']

    def camera_image(self):
        """ Return a still image reponse from the camera. """
        if self._username and self._password:
            response = requests.get(
                self._still_image_url,
                auth=HTTPBasicAuth(self._username, self._password))
        else:
            response = requests.get(self._still_image_url)

        return response.content

    @property
    def name(self):
        """ Return the name of this device. """
        return self._name