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nix-files/hosts/common/programs/ols.nix
2024-10-19 00:07:28 +00:00

40 lines
1.7 KiB
Nix

# OLS: Offline Location Service: <https://codeberg.org/tpikonen/ols>
# fields {wifi SSID,cell tower} -> lat/long queries from geoclue
# satisfies queries via an on-device cell database (see `pkgs.opencellid`)
#
# it listens on localhost:8088, and one can validate its operation with a query like (substitute macAddresses for something real):
# - WiFi: curl -d '{"wifiAccessPoints":[{"macAddress":"01:23:45:67:89:ab","signalStrength":-78},{"macAddress":"cd:ef:01:23:45:56","signalStrength":-76}]}' http://127.0.0.1:8088/v1/geolocate
# - Cell: curl -d '{"cellTowers":[{ "radioType": "lte", "mobileCountryCode": 310, "mobileNetworkCode": 260, "locationAreaCode": NNNNN, "cellId": MMMMMMMM }]}' http://127.0.0.1:8088/v1/geolocate
# - get parameters from `mmcli -m any --location-enable-3gpp` + `mmcli -m any --location-get`
# use `tracking area code` and `cell id` (both in hex)
#
# it USED to use WiGLE, but they're pretty determined to make their service unusable.
# - IRC: #wigle on WiGLE.net:6667
{ pkgs, ... }:
{
sane.programs.ols = {
packageUnwrapped = pkgs.geoclue-ols;
fs.".config/ols/cell.db".symlink.target = pkgs.runCommandLocal "cell.db" {
nativeBuildInputs = [ pkgs.geoclue-ols ];
} ''
cellid-ols-import -o "$out" "${pkgs.opencellid}"
'';
persist.byStore.private = [
".local/share/ols"
];
secrets.".config/ols/ols.toml" = ../../../secrets/common/ols.toml.bin;
sandbox.net = "localhost";
services.ols = {
description = "ols: Offline Location Service";
command = "ols";
# command = "ols 2>&1"; # XXX: it logs to stderr, and my s6 infrastructure apparently doesn't handle that
partOf = [ "graphical-session" ];
};
};
}