Andreas WredeandClaude Sonnet 5
ec5130ea7d
Cockpit's login was unreliable (Firefox rejected sometimes, Android failed outright with a TLS handshake error) and it was a resource hog on this Pi. van-router-mqtt publishes the same AP/client/WAN/Starlink/modem status and accepts the same control actions (AP/modem restart, WAN connect/disconnect, prefer) via MQTT with HA discovery, using the local Mosquitto broker already running here. It republishes van-failover/van-thermal's own state.json files verbatim rather than modifying either daemon (van-thermal is deliberately stdlib-only; van-failover's control loop wasn't worth an added dependency). Adds a Lovelace dashboard (ha/dashboards/van-router.yaml) consuming those entities. Cockpit's plugin is left deployed for now, not yet retired. Co-Authored-By: Claude Sonnet 5 <noreply@anthropic.com> Claude-Session: https://claude.ai/code/session_01S2tpeaiHUriQbbnQ4SCbkf
547 lines
20 KiB
Python
547 lines
20 KiB
Python
#!/usr/bin/env python3
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"""van-router-mqtt — publishes campervan router status to MQTT (Home Assistant
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discovery) and executes control commands, replacing the Cockpit "Van Router"
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plugin (cockpit/vanrouter/). Cockpit was a resource hog on this Pi and its
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login (PAM+TLS) rejected Firefox sometimes and Android entirely; this daemon
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sidesteps that by not running a web server or auth stack of its own at all —
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HA (already running here) owns the UI and its own login.
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AP/clients/Starlink/WAN/deploy-warnings are computed here exactly like
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vanrouter.js did (same shell-outs, same parsing). Failover/thermal/battery
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state is NOT recomputed — those daemons already write /run/van-*/state.json
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each cycle; this just republishes that file's content verbatim. (van-thermal
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is deliberately stdlib-only for boot resilience; van-battery is documented in
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the README but not actually deployed on this host, so its topic just stays
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unpublished until/unless that changes — same as Cockpit's own "daemon not
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running" fallback.)
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WAN toggle/prefer commands write the same files/run the same nmcli calls the
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Cockpit plugin did (including PREFER, which van-failover already reads) —
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this daemon owns no failover state of its own.
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"""
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import glob
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import json
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import os
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import subprocess
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import sys
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import time
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import paho.mqtt.client as mqtt
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CONFIG = "/etc/van-router-mqtt/config.json"
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with open(sys.argv[1] if len(sys.argv) > 1 else CONFIG) as f:
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cfg = json.load(f)
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APS = [
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{"id": "5g", "iface": cfg["wifi_5g_iface"], "unit": "hostapd", "band": "5GHz"},
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{"id": "2g", "iface": cfg["wifi_2g_iface"], "unit": "hostapd-2g", "band": "2.4GHz"},
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]
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LAN_PORTS = {"eth0": "LAN (eth0)", cfg["lan_usb_iface"]: "LAN (USB)"}
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STARLINK_IFACE = cfg["starlink_iface"]
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STARLINK_DISH = cfg.get("starlink_dish", "192.168.100.1:9200")
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MODEM_USB_VENDOR = cfg["modem_usb_vendor"]
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WIFI_WAN_IFACE = cfg.get("wifi_wan_iface", "wlan0")
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FAILOVER_STATE = "/run/van-failover/state.json"
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FAILOVER_PREFER = "/run/van-failover/prefer"
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THERMAL_STATE = "/run/van-thermal/state.json"
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BATTERY_STATE = "/run/van-battery/state.json"
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DEPLOYWARN = "/var/lib/vanlink/deploy-warnings.json"
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broker = cfg.get("broker", "localhost")
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mqtt_port = cfg.get("port", 1883)
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device_id = cfg.get("device_id", "van_router")
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discovery_prefix = cfg.get("discovery_prefix", "homeassistant")
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state_root = cfg.get("state_root", "van/router")
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cmd_root = cfg.get("cmd_root", "vanlink/cmd")
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poll_interval_s = cfg.get("poll_interval_s", 5)
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DEVICE_INFO = {"identifiers": [device_id], "name": "Van Router", "manufacturer": "vanlink"}
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WAN_NAMES = ("wifi", "starlink", "cellular")
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def log(msg):
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print(msg, flush=True)
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def sh(args, timeout=10):
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try:
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return subprocess.run(args, capture_output=True, text=True, timeout=timeout)
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except (subprocess.TimeoutExpired, OSError):
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return None
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def read_json_file(path):
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try:
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with open(path) as f:
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return json.load(f)
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except (OSError, json.JSONDecodeError):
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return None
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def split_nmcli(line):
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# nmcli -t escapes ':' inside field values as '\:'.
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parts, cur, esc = [], "", False
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for ch in line:
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if esc:
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cur += ch
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esc = False
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elif ch == "\\":
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esc = True
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elif ch == ":":
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parts.append(cur)
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cur = ""
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else:
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cur += ch
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parts.append(cur)
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return parts
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# ---------------- Access points + clients ----------------
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def collect_ap(ap):
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active = "inactive"
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r = sh(["systemctl", "is-active", ap["unit"]])
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if r and r.stdout.strip():
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active = r.stdout.strip()
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ssid = chan = width = None
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r = sh(["iw", "dev", ap["iface"], "info"])
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info = r.stdout if r else ""
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for line in info.splitlines():
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line = line.strip()
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if line.startswith("ssid "):
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ssid = line[len("ssid "):]
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if line.startswith("channel "):
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# "channel 149 (5745 MHz), width: 80 MHz, center1: 5775 MHz" — chan
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# and width share one line, so these can't be elif'd against each other.
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# Keep just the channel/freq part; width is published as its own field.
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chan = line.split(",", 1)[0]
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if "width:" in line:
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width = line.split("width:", 1)[1].split(",")[0].strip()
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stations = []
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r = sh(["iw", "dev", ap["iface"], "station", "dump"])
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out = r.stdout if r else ""
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for block in out.split("Station ")[1:]:
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mac = block.split(" ")[0]
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sig = tx = None
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for line in block.splitlines():
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line = line.strip()
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if line.startswith("signal:"):
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sig = line.split(":", 1)[1].strip().split(" ")[0]
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elif line.startswith("tx bitrate:"):
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tx = line.split(":", 1)[1].strip()
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stations.append({"mac": mac, "sig": sig, "tx": tx})
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return {"band": ap["band"], "unit": ap["unit"], "active": active,
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"ssid": ssid, "channel": chan, "width": width,
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"client_count": len(stations), "stations": stations}
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def collect_client_dir():
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"""MAC (lowercase) -> {ip, host}. Kernel neighbor table first, dnsmasq
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leases on top (authoritative + hostname), same precedence as vanrouter.js."""
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d = {}
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r = sh(["ip", "-j", "neigh", "show", "dev", "br0"])
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try:
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for n in json.loads(r.stdout) if r and r.stdout.strip() else []:
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if n.get("lladdr") and n.get("dst") and ":" not in n["dst"]:
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d[n["lladdr"].lower()] = {"ip": n["dst"], "host": None}
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except json.JSONDecodeError:
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pass
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try:
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with open("/var/lib/misc/dnsmasq.leases") as f:
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for line in f:
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parts = line.split()
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if len(parts) >= 4:
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d[parts[1].lower()] = {"ip": parts[2], "host": None if parts[3] == "*" else parts[3]}
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except OSError:
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pass
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return d
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def collect_clients(aps, client_dir):
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rows, seen = [], set()
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for ap in aps:
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for s in ap["stations"]:
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mac = s["mac"].lower()
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seen.add(mac)
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c = client_dir.get(mac, {})
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rows.append({"conn": ap["band"], "mac": s["mac"], "ip": c.get("ip"),
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"host": c.get("host"), "sig": s["sig"], "tx": s["tx"]})
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r = sh(["bridge", "-j", "fdb", "show", "br", "br0"])
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try:
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for e in json.loads(r.stdout) if r and r.stdout.strip() else []:
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conn = LAN_PORTS.get(e.get("ifname"))
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mac = (e.get("mac") or "").lower()
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if not conn or e.get("master") != "br0" or e.get("state") == "permanent" or mac in seen:
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continue
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seen.add(mac)
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c = client_dir.get(mac, {})
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rows.append({"conn": conn, "mac": e["mac"], "ip": c.get("ip"),
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"host": c.get("host"), "sig": None, "tx": None})
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except json.JSONDecodeError:
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pass
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rows.sort(key=lambda r: (r["conn"], r["ip"] or ""))
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return rows
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# ---------------- Starlink ----------------
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def collect_starlink():
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r = sh(["ip", "link", "show", STARLINK_IFACE])
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if not (r and r.returncode == 0):
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return {"state": "absent"}
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which = sh(["which", "grpcurl"])
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if not (which and which.returncode == 0):
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return {"state": "no_grpcurl"}
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r = sh(["grpcurl", "-plaintext", "-max-time", "3", "-d", '{"get_status":{}}',
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STARLINK_DISH, "SpaceX.API.Device.Device/Handle"], timeout=4)
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if not (r and r.returncode == 0 and r.stdout.strip().startswith("{")):
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return {"state": "unreachable"}
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try:
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st = (json.loads(r.stdout).get("dishGetStatus") or {})
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except json.JSONDecodeError:
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return {"state": "unreachable"}
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obs = st.get("obstructionStats") or {}
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alerts = [k for k, v in (st.get("alerts") or {}).items() if v]
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if st.get("outage"):
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state = (st["outage"].get("cause") or "outage").lower()
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elif obs.get("currentlyObstructed"):
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state = "obstructed"
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else:
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state = "online"
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return {
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"state": state, "alerts": alerts,
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"uptime_s": (st.get("deviceState") or {}).get("uptimeS"),
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"software_version": (st.get("deviceInfo") or {}).get("softwareVersion"),
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"latency_ms": st.get("popPingLatencyMs"),
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"downlink_bps": st.get("downlinkThroughputBps"),
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"uplink_bps": st.get("uplinkThroughputBps"),
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"obstructed_pct": (obs.get("fractionObstructed") or 0) * 100 if obs.get("fractionObstructed") is not None else None,
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}
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# ---------------- Modem + WAN/uplinks ----------------
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def collect_modem():
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r = sh(["mmcli", "-m", "any", "-K"])
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if not (r and r.returncode == 0):
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return None
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kv = {}
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for line in r.stdout.splitlines():
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if ":" in line:
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k, v = line.split(":", 1)
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kv[k.strip()] = v.strip()
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if not kv.get("modem.generic.state"):
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return None
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netdev, techs = None, []
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for k, v in kv.items():
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if k.startswith("modem.generic.ports.value"):
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if v.endswith("(net)"):
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netdev = v.split(" ")[0]
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if k.startswith("modem.generic.access-technologies.value"):
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techs.append(v)
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op = kv.get("modem.3gpp.operator-name")
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return {"netdev": netdev, "signal": kv.get("modem.generic.signal-quality.value"),
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"tech": "/".join(techs), "operator": None if op == "--" else op}
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def collect_wan():
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modem = collect_modem()
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r = sh(["nmcli", "-t", "-f", "DEVICE,TYPE,STATE,CONNECTION", "device", "status"])
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devs = []
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for line in (r.stdout.strip().splitlines() if r and r.stdout.strip() else []):
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f = split_nmcli(line)
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if len(f) < 3:
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continue
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device, dtype, state, connection = f[0], f[1], f[2], ":".join(f[3:])
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if dtype not in ("ethernet", "wifi", "gsm") or state == "unmanaged":
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continue
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if any(a["iface"] == device for a in APS):
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continue
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devs.append({"device": device, "type": dtype, "state": state, "connection": connection or None})
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r = sh(["ip", "-j", "route", "show", "default"])
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routes = json.loads(r.stdout) if r and r.stdout.strip() else []
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metric_by_dev = {rt["dev"]: rt.get("metric") for rt in routes if rt.get("dev")}
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active_dev = min(metric_by_dev, key=lambda d: metric_by_dev[d] or 0) if metric_by_dev else None
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r = sh(["ip", "-j", "-4", "addr"])
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ip_by_dev = {}
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for a in (json.loads(r.stdout) if r and r.stdout.strip() else []):
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info = next((x for x in a.get("addr_info", []) if x.get("family") == "inet"), None)
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if info:
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ip_by_dev[a["ifname"]] = f"{info['local']}/{info['prefixlen']}"
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for d in devs:
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if d["type"] == "gsm":
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d["name"] = "cellular"
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if modem:
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if modem["netdev"]:
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d["device"] = modem["netdev"]
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d["signal"] = modem["signal"]
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d["tech"] = modem["tech"]
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d["operator"] = modem["operator"]
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elif d["device"] == WIFI_WAN_IFACE:
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d["name"] = "wifi"
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elif d["device"] == STARLINK_IFACE:
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d["name"] = "starlink"
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else:
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d["name"] = None
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d["metric"] = metric_by_dev.get(d["device"])
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d["ip"] = ip_by_dev.get(d["device"])
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d["active"] = d["device"] == active_dev
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return devs
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def collect_deploywarn():
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return read_json_file(DEPLOYWARN) or {"warnings": []}
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def read_prefer():
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try:
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with open(FAILOVER_PREFER) as f:
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return f.read().strip() or None
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except OSError:
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return None
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# ---------------- Commands ----------------
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def restart_ap(ap_id):
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ap = next((a for a in APS if a["id"] == ap_id), None)
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if ap:
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sh(["systemctl", "restart", ap["unit"]])
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def restart_modem():
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r = sh(["mmcli", "-m", "any", "--disable"])
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if r and r.returncode == 0:
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sh(["mmcli", "-m", "any", "--enable"])
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return
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# MM couldn't talk to the modem at all: USB unbind/bind by Quectel vendor id,
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# same fallback vanrouter.js used.
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dev = None
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for f in glob.glob("/sys/bus/usb/devices/*/idVendor"):
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try:
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if open(f).read().strip() == MODEM_USB_VENDOR:
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dev = f.split("/")[-2]
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break
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except OSError:
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continue
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if not dev:
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log("modem restart: no USB device found for vendor " + MODEM_USB_VENDOR)
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return
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try:
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open("/sys/bus/usb/drivers/usb/unbind", "w").write(dev)
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time.sleep(3)
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open("/sys/bus/usb/drivers/usb/bind", "w").write(dev)
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except OSError as e:
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log(f"modem restart: USB rebind failed: {e}")
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def wan_device_for(name, wan_rows):
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row = next((w for w in wan_rows if w.get("name") == name), None)
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return row["device"] if row else None
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def toggle_wan(name, verb, wan_rows):
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dev = wan_device_for(name, wan_rows)
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if not dev:
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log(f"wan toggle: no device currently known for '{name}'")
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return
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sh(["nmcli", "device", verb, dev])
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def prefer_wan(name, wan_rows):
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if name == "auto":
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try:
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os.remove(FAILOVER_PREFER)
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except OSError:
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pass
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return
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dev = wan_device_for(name, wan_rows)
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if not dev:
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log(f"prefer wan: no device currently known for '{name}'")
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return
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os.makedirs(os.path.dirname(FAILOVER_PREFER), exist_ok=True)
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with open(FAILOVER_PREFER, "w") as f:
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f.write(dev)
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# ---------------- MQTT discovery ----------------
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def _sensor(key, name, state_topic, value_template=None, json_attrs=False,
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device_class=None, entity_category=None):
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p = {"name": name, "unique_id": f"{device_id}_{key}", "device": DEVICE_INFO,
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"state_topic": state_topic, "expire_after": poll_interval_s * 4}
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if value_template:
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p["value_template"] = value_template
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if json_attrs:
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p["json_attributes_topic"] = state_topic
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if device_class:
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p["device_class"] = device_class
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if entity_category:
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p["entity_category"] = entity_category
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return p
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def _button(key, name, command_topic):
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return {"name": name, "unique_id": f"{device_id}_{key}",
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"command_topic": command_topic, "device": DEVICE_INFO}
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def _switch(key, name, command_topic, state_topic, value_template):
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# state_on/state_off default to payload_on/payload_off ("connect"/"disconnect")
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# when not set explicitly, NOT to "ON"/"OFF" -- must match value_template's
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# literal output or the entity sits at "unknown" forever (found via live check).
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return {"name": name, "unique_id": f"{device_id}_{key}",
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"command_topic": command_topic, "state_topic": state_topic,
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"value_template": value_template, "payload_on": "connect",
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"payload_off": "disconnect", "state_on": "ON", "state_off": "OFF",
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"device": DEVICE_INFO, "expire_after": poll_interval_s * 4}
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def _select(key, name, command_topic, options, state_topic=None, value_template=None):
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p = {"name": name, "unique_id": f"{device_id}_{key}",
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"command_topic": command_topic, "options": options, "device": DEVICE_INFO}
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if state_topic:
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p["state_topic"] = state_topic
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p["value_template"] = value_template
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return p
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def publish_discovery(mqc):
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def pub(component, key, payload):
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mqc.publish(f"{discovery_prefix}/{component}/{device_id}/{key}/config",
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json.dumps(payload), retain=True)
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for ap in APS:
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t = f"{state_root}/ap/{ap['id']}"
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pub("sensor", f"ap_{ap['id']}", _sensor(
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f"ap_{ap['id']}", f"AP {ap['band']}", t, "{{ value_json.active }}", json_attrs=True))
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pub("button", f"ap_{ap['id']}_restart", _button(
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f"ap_{ap['id']}_restart", f"Restart {ap['band']} AP", f"{cmd_root}/ap/{ap['id']}/restart"))
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pub("sensor", "clients", _sensor(
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"clients", "Connected Clients", f"{state_root}/clients",
|
|
"{{ value_json.rows | length }}", json_attrs=True))
|
|
|
|
pub("sensor", "starlink", _sensor(
|
|
"starlink", "Starlink", f"{state_root}/starlink", "{{ value_json.state }}", json_attrs=True))
|
|
|
|
pub("sensor", "wan", _sensor(
|
|
"wan", "WAN / Uplinks", f"{state_root}/wan",
|
|
"{{ (value_json.rows | selectattr('active','eq',true) | map(attribute='device') | first) or 'none' }}",
|
|
json_attrs=True))
|
|
|
|
pub("sensor", "deploywarn", _sensor(
|
|
"deploywarn", "Deploy Warnings", f"{state_root}/deploywarn",
|
|
"{{ value_json.warnings | length }}", json_attrs=True, entity_category="diagnostic"))
|
|
|
|
pub("sensor", "failover", _sensor(
|
|
"failover", "WAN Failover", f"{state_root}/failover",
|
|
"{{ value_json.active_device }}", json_attrs=True))
|
|
|
|
pub("sensor", "thermal", _sensor(
|
|
"thermal", "Thermal", f"{state_root}/thermal",
|
|
"{% set levels = value_json.sensors.values() | map(attribute='level') | list %}"
|
|
"{{ 'crit' if 'crit' in levels else ('warn' if 'warn' in levels else 'ok') }}",
|
|
json_attrs=True))
|
|
|
|
pub("sensor", "battery", _sensor(
|
|
"battery", "System Battery", f"{state_root}/battery",
|
|
"{{ value_json.capacity }}", json_attrs=True, device_class="battery"))
|
|
|
|
pub("button", "modem_restart", _button("modem_restart", "Restart Modem", f"{cmd_root}/modem/restart"))
|
|
|
|
for name in WAN_NAMES:
|
|
pub("switch", f"wan_{name}", _switch(
|
|
f"wan_{name}", f"WAN {name}", f"{cmd_root}/wan/{name}/set", f"{state_root}/wan",
|
|
"{{ 'ON' if (value_json.rows | selectattr('name','eq','" + name + "') "
|
|
"| map(attribute='state') | first) == 'connected' else 'OFF' }}"))
|
|
|
|
pub("select", "wan_prefer", _select(
|
|
"wan_prefer", "Preferred WAN", f"{cmd_root}/wan/prefer", ["auto", *WAN_NAMES],
|
|
f"{state_root}/wan_prefer", "{{ value_json.prefer }}"))
|
|
|
|
|
|
# ---------------- publish state / dispatch commands ----------------
|
|
|
|
def publish_state(mqc):
|
|
aps = [collect_ap(a) for a in APS]
|
|
client_dir = collect_client_dir()
|
|
wan_rows = collect_wan()
|
|
|
|
mqc.publish(f"{state_root}/wan", json.dumps({"rows": wan_rows}))
|
|
for ap, meta in zip(aps, APS):
|
|
mqc.publish(f"{state_root}/ap/{meta['id']}", json.dumps(ap))
|
|
mqc.publish(f"{state_root}/clients", json.dumps({"rows": collect_clients(aps, client_dir)}))
|
|
mqc.publish(f"{state_root}/starlink", json.dumps(collect_starlink()))
|
|
mqc.publish(f"{state_root}/deploywarn", json.dumps(collect_deploywarn()))
|
|
mqc.publish(f"{state_root}/wan_prefer", json.dumps({"prefer": read_prefer() or "auto"}))
|
|
|
|
failover = read_json_file(FAILOVER_STATE)
|
|
if failover is not None:
|
|
mqc.publish(f"{state_root}/failover", json.dumps(failover))
|
|
thermal = read_json_file(THERMAL_STATE)
|
|
if thermal is not None:
|
|
mqc.publish(f"{state_root}/thermal", json.dumps(thermal))
|
|
battery = read_json_file(BATTERY_STATE)
|
|
if battery is not None:
|
|
mqc.publish(f"{state_root}/battery", json.dumps(battery))
|
|
|
|
return wan_rows
|
|
|
|
|
|
COMMANDS = {}
|
|
for _ap in APS:
|
|
COMMANDS[f"{cmd_root}/ap/{_ap['id']}/restart"] = (lambda ap_id: lambda payload, wan_rows: restart_ap(ap_id))(_ap["id"])
|
|
COMMANDS[f"{cmd_root}/modem/restart"] = lambda payload, wan_rows: restart_modem()
|
|
COMMANDS[f"{cmd_root}/wan/prefer"] = lambda payload, wan_rows: prefer_wan(payload.strip(), wan_rows)
|
|
for _name in WAN_NAMES:
|
|
COMMANDS[f"{cmd_root}/wan/{_name}/set"] = (
|
|
lambda name: lambda payload, wan_rows: toggle_wan(name, payload.strip(), wan_rows))(_name)
|
|
|
|
|
|
def on_message(mqc, userdata, msg):
|
|
fn = COMMANDS.get(msg.topic)
|
|
if not fn:
|
|
return
|
|
payload = msg.payload.decode("utf-8", errors="replace")
|
|
log(f"command {msg.topic} = {payload!r}")
|
|
# A command may need the current WAN device mapping (toggle/prefer resolve
|
|
# a WAN *name* to whatever device currently backs it) — recollect fresh
|
|
# rather than trust a possibly-stale cached copy.
|
|
wan_rows = collect_wan()
|
|
try:
|
|
fn(payload, wan_rows)
|
|
except Exception as e:
|
|
log(f"command {msg.topic} failed: {e}")
|
|
publish_state(mqc) # reflect the result immediately, don't wait for next poll
|
|
|
|
|
|
def main():
|
|
mqc = mqtt.Client(mqtt.CallbackAPIVersion.VERSION2, client_id=cfg.get("client_id", "van-router-mqtt"))
|
|
if cfg.get("username"):
|
|
mqc.username_pw_set(cfg["username"], cfg.get("password", ""))
|
|
mqc.on_message = on_message
|
|
mqc.connect(broker, mqtt_port, keepalive=60)
|
|
for topic in COMMANDS:
|
|
mqc.subscribe(topic)
|
|
mqc.loop_start()
|
|
publish_discovery(mqc)
|
|
log(f"van-router-mqtt started: broker={broker}:{mqtt_port} poll={poll_interval_s}s")
|
|
while True:
|
|
publish_state(mqc)
|
|
time.sleep(poll_interval_s)
|
|
|
|
|
|
if __name__ == "__main__":
|
|
try:
|
|
main()
|
|
except KeyboardInterrupt:
|
|
sys.exit(0)
|