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-rwxr-xr-xbase_presence.py250
1 files changed, 250 insertions, 0 deletions
diff --git a/base_presence.py b/base_presence.py
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+++ b/base_presence.py
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+#!/usr/bin/env python3
+
+import datetime
+from collections import defaultdict
+import logging
+import re
+from typing import Dict, List, Set
+
+# Note: this module is fairly early loaded. Be aware of dependencies.
+import argparse_utils
+import bootstrap
+import config
+from type.locations import Location
+from type.people import Person
+import site_config
+
+
+logger = logging.getLogger(__name__)
+
+cfg = config.add_commandline_args(
+ f"Presence Detection ({__file__})",
+ "Args related to detection of human beings in locations.",
+)
+cfg.add_argument(
+ "--presence_macs_file",
+ type=argparse_utils.valid_filename,
+ default = "/home/scott/cron/persisted_mac_addresses.txt",
+ metavar="FILENAME",
+ help="The location of persisted_mac_addresses.txt to use."
+)
+cfg.add_argument(
+ '--presence_tolerable_staleness_seconds',
+ type=argparse_utils.valid_duration,
+ default=datetime.timedelta(seconds=60 * 5),
+ metavar='DURATION',
+ help='Max acceptable age of location data before auto-refreshing'
+)
+
+
+class PresenceDetection(object):
+ def __init__(self) -> None:
+ # Note: list most important devices first.
+ self.devices_by_person: Dict[Person, List[str]] = {
+ Person.SCOTT: [
+ "3C:28:6D:10:6D:41", # pixel3
+ "6C:40:08:AE:DC:2E", # laptop
+ ],
+ Person.LYNN: [
+ "08:CC:27:63:26:14", # motog7
+ "B8:31:B5:9A:4F:19", # laptop
+ ],
+ Person.ALEX: [
+ "0C:CB:85:0C:8B:AE", # phone
+ "D0:C6:37:E3:36:9A", # laptop
+ ],
+ Person.AARON_AND_DANA: [
+ "98:B6:E9:E5:5A:7C",
+ "D6:2F:37:CA:B2:9B",
+ "6C:E8:5C:ED:17:26",
+ "90:E1:7B:13:7C:E5",
+ "6E:DC:7C:75:02:1B",
+ "B2:16:1A:93:7D:50",
+ "18:65:90:DA:3A:35",
+ "22:28:C8:7D:3C:85",
+ "B2:95:23:69:91:F8",
+ "96:69:2C:88:7A:C3",
+ ],
+ }
+ self.run_location = site_config.get_location()
+ logger.debug(f"run_location is {self.run_location}")
+ self.weird_mac_at_cabin = False
+ self.location_ts_by_mac: Dict[
+ Location, Dict[str, datetime.datetime]
+ ] = defaultdict(dict)
+ self.names_by_mac: Dict[str, str] = {}
+ self.dark_locations: Set[Location] = set()
+ self.last_update = None
+
+ def maybe_update(self) -> None:
+ if self.last_update is None:
+ self.update()
+ else:
+ now = datetime.datetime.now()
+ delta = now - self.last_update
+ if delta.total_seconds() > config.config['presence_tolerable_staleness_seconds'].total_seconds():
+ logger.debug(
+ f"It's been {delta.total_seconds()}s since last update; refreshing now."
+ )
+ self.update()
+
+ def update(self) -> None:
+ self.dark_locations = set()
+ if self.run_location is Location.HOUSE:
+ self.update_from_house()
+ elif self.run_location is Location.CABIN:
+ self.update_from_cabin()
+ else:
+ raise Exception("Where the hell is this running?!")
+ self.last_update = datetime.datetime.now()
+
+ def update_from_house(self) -> None:
+ from exec_utils import cmd
+ try:
+ persisted_macs = config.config['presence_macs_file']
+ except KeyError:
+ persisted_macs = '/home/scott/cron/persisted_mac_addresses.txt'
+ self.read_persisted_macs_file(persisted_macs, Location.HOUSE)
+ try:
+ raw = cmd(
+ "ssh [email protected] 'cat /home/scott/cron/persisted_mac_addresses.txt'",
+ timeout_seconds=10.0,
+ )
+ self.parse_raw_macs_file(raw, Location.CABIN)
+ except Exception as e:
+ logger.exception(e)
+ logger.warning("Can't see the cabin right now; presence detection impared.")
+ self.dark_locations.add(Location.CABIN)
+
+ def update_from_cabin(self) -> None:
+ from exec_utils import cmd
+ try:
+ persisted_macs = config.config['presence_macs_file']
+ except KeyError:
+ persisted_macs = '/home/scott/cron/persisted_mac_addresses.txt'
+ self.read_persisted_macs_file(persisted_macs, Location.CABIN)
+ try:
+ raw = cmd(
+ "ssh [email protected] 'cat /home/scott/cron/persisted_mac_addresses.txt'",
+ timeout_seconds=10.0,
+ )
+ self.parse_raw_macs_file(raw, Location.HOUSE)
+ except Exception as e:
+ logger.exception(e)
+ logger.warning("Can't see the house right now; presence detection impared.")
+ self.dark_locations.add(Location.HOUSE)
+
+ def read_persisted_macs_file(
+ self, filename: str, location: Location
+ ) -> None:
+ if location is Location.UNKNOWN:
+ return
+ with open(filename, "r") as rf:
+ lines = rf.read()
+ self.parse_raw_macs_file(lines, location)
+
+ def parse_raw_macs_file(self, raw: str, location: Location) -> None:
+ lines = raw.split("\n")
+
+ # CC:F4:11:D7:FA:EE, 2240, 10.0.0.22 (side_deck_high_home), Google, 1611681990
+ cabin_count = 0
+ for line in lines:
+ line = line.strip()
+ if len(line) == 0:
+ continue
+ logger.debug(f'{location}> {line}')
+ if "cabin_" in line:
+ continue
+ if location == Location.CABIN:
+ logger.debug('Cabin count: {cabin_count}')
+ cabin_count += 1
+ try:
+ (mac, count, ip_name, mfg, ts) = line.split(",")
+ except Exception as e:
+ logger.error(f'SKIPPED BAD LINE> {line}')
+ logger.exception(e)
+ continue
+ mac = mac.strip()
+ (self.location_ts_by_mac[location])[
+ mac
+ ] = datetime.datetime.fromtimestamp(int(ts.strip()))
+ ip_name = ip_name.strip()
+ match = re.match(r"(\d+\.\d+\.\d+\.\d+) +\(([^\)]+)\)", ip_name)
+ if match is not None:
+ name = match.group(2)
+ self.names_by_mac[mac] = name
+ if cabin_count > 0:
+ logger.debug('Weird MAC at the cabin')
+ self.weird_mac_at_cabin = True
+
+ def is_anyone_in_location_now(self, location: Location) -> bool:
+ self.maybe_update()
+ if location in self.dark_locations:
+ raise Exception(f"Can't see {location} right now; answer undefined.")
+ for person in Person:
+ if person is not None:
+ loc = self.where_is_person_now(person)
+ if location == loc:
+ return True
+ if location == location.CABIN and self.weird_mac_at_cabin:
+ return True
+ return False
+
+ def where_is_person_now(self, name: Person) -> Location:
+ self.maybe_update()
+ if len(self.dark_locations) > 0:
+ logger.warning(
+ f"Can't see {self.dark_locations} right now; answer confidence impacted"
+ )
+ logger.debug(f'Looking for {name}...')
+
+ if name is Person.UNKNOWN:
+ if self.weird_mac_at_cabin:
+ return Location.CABIN
+ else:
+ return Location.UNKNOWN
+
+ import dict_utils
+ votes: Dict[Location, int] = {}
+ tiebreaks: Dict[Location, datetime.datetime] = {}
+ credit = 10000
+ for mac in self.devices_by_person[name]:
+ if mac not in self.names_by_mac:
+ continue
+ mac_name = self.names_by_mac[mac]
+ logger.debug(f'Looking for {name}... check for mac {mac} ({mac_name})')
+ for location in self.location_ts_by_mac:
+ if mac in self.location_ts_by_mac[location]:
+ ts = (self.location_ts_by_mac[location])[mac]
+ logger.debug(f'Seen {mac} ({mac_name}) at {location} since {ts}')
+ tiebreaks[location] = ts
+
+ (most_recent_location, first_seen_ts) = dict_utils.item_with_max_value(tiebreaks)
+ bonus = credit
+ v = votes.get(most_recent_location, 0)
+ votes[most_recent_location] = v + bonus
+ logger.debug(f'{name}: {location} gets {bonus} votes.')
+ credit = int(
+ credit * 0.2
+ ) # Note: list most important devices first
+ if credit <= 0:
+ credit = 1
+ if len(votes) > 0:
+ (location, value) = dict_utils.item_with_max_value(votes)
+ if value > 2001:
+ return location
+ return Location.UNKNOWN
+
+
[email protected]
+def main() -> None:
+ p = PresenceDetection()
+ for person in Person:
+ print(f'{person} => {p.where_is_person_now(person)}')
+ print()
+ for location in Location:
+ print(f'{location} => {p.is_anyone_in_location_now(location)}')
+
+
+if __name__ == '__main__':
+ main()
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