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IQ.Lvbs CI [bot]
56 lines
1.5 KiB
Python
56 lines
1.5 KiB
Python
import time
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import threading
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import subprocess
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# Shared, throttled current-Wi-Fi-SSID lookup for the status bars (home pill + onroad sidebar).
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# The SSID isn't in deviceState, so we shell out to NetworkManager on a background thread and cache
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# the result; the render thread only ever reads the cached string.
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_ssid = ""
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_last_fetch = 0.0
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_fetching = False
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_lock = threading.Lock()
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REFRESH_SECONDS = 10.0
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def _read_ssid() -> str:
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try:
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out = subprocess.run(["nmcli", "-t", "-f", "active,ssid", "dev", "wifi"],
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capture_output=True, text=True, timeout=4).stdout
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for line in out.splitlines():
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if line.startswith("yes:"):
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name = line.split(":", 1)[1].strip()
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if name:
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return name
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except Exception:
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pass
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try:
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name = subprocess.run(["iwgetid", "-r"], capture_output=True, text=True, timeout=4).stdout.strip()
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if name:
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return name
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except Exception:
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pass
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return ""
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def _fetch() -> None:
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global _ssid, _last_fetch, _fetching
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name = _read_ssid()
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with _lock:
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_ssid = name
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_last_fetch = time.monotonic()
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_fetching = False
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def current_ssid(on_wifi: bool) -> str:
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"""Return the connected SSID (or "" if unknown / not on Wi-Fi). Kicks a throttled background
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refresh; never blocks the caller."""
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global _fetching
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if not on_wifi:
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return ""
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with _lock:
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if not _fetching and time.monotonic() - _last_fetch > REFRESH_SECONDS:
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_fetching = True
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threading.Thread(target=_fetch, daemon=True).start()
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return _ssid
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