mirror of
https://github.com/home-assistant/core
synced 2024-08-31 05:57:13 +02:00
122 lines
3.8 KiB
Python
122 lines
3.8 KiB
Python
"""Support for THOMSON routers."""
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import logging
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import re
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import telnetlib
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import voluptuous as vol
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from homeassistant.components.device_tracker import (
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DOMAIN,
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PLATFORM_SCHEMA,
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DeviceScanner,
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)
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from homeassistant.const import CONF_HOST, CONF_PASSWORD, CONF_USERNAME
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import homeassistant.helpers.config_validation as cv
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_LOGGER = logging.getLogger(__name__)
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_DEVICES_REGEX = re.compile(
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r"(?P<mac>(([0-9a-f]{2}[:-]){5}([0-9a-f]{2})))\s"
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r"(?P<ip>([0-9]{1,3}[\.]){3}[0-9]{1,3})\s+"
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r"(?P<status>([^\s]+))\s+"
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r"(?P<type>([^\s]+))\s+"
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r"(?P<intf>([^\s]+))\s+"
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r"(?P<hwintf>([^\s]+))\s+"
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r"(?P<host>([^\s]+))"
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)
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PLATFORM_SCHEMA = PLATFORM_SCHEMA.extend(
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{
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vol.Required(CONF_HOST): cv.string,
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vol.Required(CONF_PASSWORD): cv.string,
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vol.Required(CONF_USERNAME): cv.string,
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}
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)
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def get_scanner(hass, config):
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"""Validate the configuration and return a THOMSON scanner."""
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scanner = ThomsonDeviceScanner(config[DOMAIN])
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return scanner if scanner.success_init else None
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class ThomsonDeviceScanner(DeviceScanner):
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"""This class queries a router running THOMSON firmware."""
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def __init__(self, config):
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"""Initialize the scanner."""
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self.host = config[CONF_HOST]
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self.username = config[CONF_USERNAME]
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self.password = config[CONF_PASSWORD]
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self.last_results = {}
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# Test the router is accessible.
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data = self.get_thomson_data()
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self.success_init = data is not None
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def scan_devices(self):
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"""Scan for new devices and return a list with found device IDs."""
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self._update_info()
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return [client["mac"] for client in self.last_results]
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def get_device_name(self, device):
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"""Return the name of the given device or None if we don't know."""
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if not self.last_results:
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return None
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for client in self.last_results:
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if client["mac"] == device:
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return client["host"]
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return None
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def _update_info(self):
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"""Ensure the information from the THOMSON router is up to date.
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Return boolean if scanning successful.
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"""
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if not self.success_init:
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return False
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_LOGGER.info("Checking ARP")
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data = self.get_thomson_data()
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if not data:
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return False
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# Flag C stands for CONNECTED
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active_clients = [
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client for client in data.values() if client["status"].find("C") != -1
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]
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self.last_results = active_clients
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return True
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def get_thomson_data(self):
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"""Retrieve data from THOMSON and return parsed result."""
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try:
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telnet = telnetlib.Telnet(self.host)
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telnet.read_until(b"Username : ")
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telnet.write((self.username + "\r\n").encode("ascii"))
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telnet.read_until(b"Password : ")
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telnet.write((self.password + "\r\n").encode("ascii"))
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telnet.read_until(b"=>")
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telnet.write(b"hostmgr list\r\n")
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devices_result = telnet.read_until(b"=>").split(b"\r\n")
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telnet.write(b"exit\r\n")
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except EOFError:
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_LOGGER.exception("Unexpected response from router")
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return
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except ConnectionRefusedError:
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_LOGGER.exception("Connection refused by router. Telnet enabled?")
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return
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devices = {}
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for device in devices_result:
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match = _DEVICES_REGEX.search(device.decode("utf-8"))
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if match:
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devices[match.group("ip")] = {
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"ip": match.group("ip"),
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"mac": match.group("mac").upper(),
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"host": match.group("host"),
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"status": match.group("status"),
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}
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return devices
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