mirror of
https://github.com/home-assistant/core.git
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142 lines
4.3 KiB
Python
142 lines
4.3 KiB
Python
"""Get your own public IP address or that of any host."""
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from __future__ import annotations
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import asyncio
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from datetime import timedelta
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from ipaddress import IPv4Address, IPv6Address
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import logging
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from typing import Literal
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import aiodns
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from aiodns.error import DNSError
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from homeassistant.components.sensor import SensorEntity
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from homeassistant.config_entries import ConfigEntry
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from homeassistant.const import CONF_NAME, CONF_PORT
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from homeassistant.core import HomeAssistant
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from homeassistant.helpers.device_registry import DeviceEntryType, DeviceInfo
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from homeassistant.helpers.entity_platform import AddConfigEntryEntitiesCallback
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from .const import (
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CONF_HOSTNAME,
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CONF_IPV4,
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CONF_IPV6,
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CONF_PORT_IPV6,
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CONF_RESOLVER,
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CONF_RESOLVER_IPV6,
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DOMAIN,
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)
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DEFAULT_RETRIES = 2
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MAX_RESULTS = 10
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_LOGGER = logging.getLogger(__name__)
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SCAN_INTERVAL = timedelta(seconds=120)
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def sort_ips(ips: list, querytype: Literal["A", "AAAA"]) -> list:
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"""Join IPs into a single string."""
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if querytype == "AAAA":
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ips = [IPv6Address(ip) for ip in ips]
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else:
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ips = [IPv4Address(ip) for ip in ips]
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return [str(ip) for ip in sorted(ips)][:MAX_RESULTS]
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async def async_setup_entry(
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hass: HomeAssistant,
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entry: ConfigEntry,
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async_add_entities: AddConfigEntryEntitiesCallback,
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) -> None:
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"""Set up the dnsip sensor entry."""
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hostname = entry.data[CONF_HOSTNAME]
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name = entry.data[CONF_NAME]
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nameserver_ipv4 = entry.options[CONF_RESOLVER]
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nameserver_ipv6 = entry.options[CONF_RESOLVER_IPV6]
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port_ipv4 = entry.options[CONF_PORT]
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port_ipv6 = entry.options[CONF_PORT_IPV6]
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entities = []
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if entry.data[CONF_IPV4]:
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entities.append(WanIpSensor(name, hostname, nameserver_ipv4, False, port_ipv4))
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if entry.data[CONF_IPV6]:
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entities.append(WanIpSensor(name, hostname, nameserver_ipv6, True, port_ipv6))
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async_add_entities(entities, update_before_add=True)
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class WanIpSensor(SensorEntity):
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"""Implementation of a DNS IP sensor."""
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_attr_has_entity_name = True
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_attr_translation_key = "dnsip"
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_unrecorded_attributes = frozenset({"resolver", "querytype", "ip_addresses"})
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resolver: aiodns.DNSResolver
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def __init__(
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self,
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name: str,
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hostname: str,
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nameserver: str,
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ipv6: bool,
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port: int,
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) -> None:
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"""Initialize the DNS IP sensor."""
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self._attr_name = "IPv6" if ipv6 else None
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self._attr_unique_id = f"{hostname}_{ipv6}"
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self.hostname = hostname
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self.port = port
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self.nameserver = nameserver
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self.querytype: Literal["A", "AAAA"] = "AAAA" if ipv6 else "A"
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self._retries = DEFAULT_RETRIES
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self._attr_extra_state_attributes = {
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"resolver": nameserver,
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"querytype": self.querytype,
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}
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self._attr_device_info = DeviceInfo(
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entry_type=DeviceEntryType.SERVICE,
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identifiers={(DOMAIN, hostname)},
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manufacturer="DNS",
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model=aiodns.__version__,
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name=name,
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)
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self.create_dns_resolver()
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def create_dns_resolver(self) -> None:
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"""Create the DNS resolver."""
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self.resolver = aiodns.DNSResolver(
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nameservers=[self.nameserver], tcp_port=self.port, udp_port=self.port
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)
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async def async_update(self) -> None:
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"""Get the current DNS IP address for hostname."""
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if self.resolver._closed: # noqa: SLF001
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self.create_dns_resolver()
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response = None
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try:
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async with asyncio.timeout(10):
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response = await self.resolver.query(self.hostname, self.querytype)
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except TimeoutError:
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await self.resolver.close()
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except DNSError as err:
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_LOGGER.warning("Exception while resolving host: %s", err)
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if response:
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sorted_ips = sort_ips(
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[res.host for res in response], querytype=self.querytype
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)
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self._attr_native_value = sorted_ips[0]
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self._attr_extra_state_attributes["ip_addresses"] = sorted_ips
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self._attr_available = True
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self._retries = DEFAULT_RETRIES
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elif self._retries > 0:
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self._retries -= 1
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else:
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self._attr_available = False
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