164 lines
4.7 KiB
Nix
164 lines
4.7 KiB
Nix
with import ./lib;
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{ config, pkgs, ... }: {
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options = {
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tv.wwan.enable = mkEnableOption "tv.wwan";
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tv.wwan.apn = mkOption {
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type = with types; filename;
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};
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tv.wwan.device = mkOption {
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type = with types; pathname;
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default = "/dev/cdc-wdm0";
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};
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tv.wwan.interface = mkOption {
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type = with types; nullOr filename;
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default = null;
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};
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tv.wwan.operators = mkOption {
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type = with types; listOf username;
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default = [];
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};
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tv.wwan.secrets = mkOption {
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type = with types; pathname;
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default = toString <secrets/wwan.json>;
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# format: {"pin1":number}
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};
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};
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config = let
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cfg = config.tv.wwan;
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in mkIf cfg.enable {
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systemd.services.wwan = {
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environment = {
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DEVICE = cfg.device;
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SECRETS = "%d/secrets";
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};
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path = [
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pkgs.busybox
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pkgs.coreutils
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pkgs.iproute2
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pkgs.jq
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(pkgs.symlinkJoin {
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name = "uqmi-wrapper";
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paths = [
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(pkgs.writeDashBin "uqmi" ''
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set -efu
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exec ${pkgs.uqmi}/bin/uqmi --device="$DEVICE" "$@"
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'')
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pkgs.uqmi
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];
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})
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(pkgs.writeDashBin "get-interface" (
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if cfg.interface != null then /* sh */ ''
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echo ${cfg.interface}
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'' else /* sh */ ''
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exec ${pkgs.libqmi}/bin/qmicli -d "$DEVICE" -p --get-wwan-iface
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''
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))
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];
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serviceConfig = {
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LoadCredential = [
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"secrets:${cfg.secrets}"
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];
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Type = "oneshot";
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RemainAfterExit = true;
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SyslogIdentifier = "wwan";
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ExecStart = pkgs.writeDash "tv.wwan.start.sh" ''
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set -efu
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interface=$(get-interface)
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pin1_status=$(
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uqmi --uim-get-sim-state |
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jq -r '"\(.pin1_status)/\(.pin1_verify_tries)"'
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)
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case $pin1_status in
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verified/*)
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:
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;;
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not_verified/3)
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pin1=$(jq .pin1 "$SECRETS")
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echo "verifying PIN1" >&2
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if ! uqmi --uim-verify-pin1 "$pin1"; then
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echo "error: failed to verify PIN1" >&2
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exit 1
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fi
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;;
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not_verified/*)
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echo "error: not trying to verify PIN1: not enough tries left" >&2
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echo \
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"please check your configuration in ${cfg.secrets}" \
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" and verify if manually using:" \
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" ${pkgs.uqmi}/bin/uqmi -d $device --uim-veriy-pin1 XXXX" \
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>&2
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exit 1
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esac
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raw_ip_path=/sys/class/net/$interface/qmi/raw_ip
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raw_ip=$(cat "$raw_ip_path")
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if [ "$raw_ip" != Y ]; then
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echo "enabling raw-ip" >&2
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if ! echo Y > "$raw_ip_path"; then
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echo "error: failed to enable raw-ip" >&2
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exit 1
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fi
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fi
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operating_mode=$(uqmi --get-device-operating-mode | tr -d \")
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case $operating_mode in
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online)
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:
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;;
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persistent_low_power|low_power)
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echo "settings device operating mode to online" >&2
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uqmi --set-device-operating-mode online
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operating_mode=$(uqmi --get-device-operating-mode | tr -d \")
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if test "$operating_mode" != online; then
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echo "error: failed to set device operating mode to online" >&2
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exit 1
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fi
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;;
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*)
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echo "error: don't know how to change device operating mode to online: $operating_mode" >&2
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exit 1
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esac
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ip link set dev "$interface" up
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data_status=$(uqmi --get-data-status | tr -d \")
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case $data_status in
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connected)
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:
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;;
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disconnected)
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echo "starting network (APN=${cfg.apn})" >&2
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sleep 1
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uqmi \
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--start-network \
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--autoconnect \
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--apn ${cfg.apn} \
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--ip-family ipv4
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sleep 1
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;;
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*)
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echo "error: unsupported data status: $data_status" >&2
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exit 1
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esac
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udhcpc -q -f -n -i "$interface"
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'';
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Restart = "on-failure";
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ExecStop = pkgs.writeDash "tv.wwan.stop.sh" ''
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set -efu
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interface=$(get-interface)
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ip link set dev "$interface" down
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uqmi --stop-network 0xFFFFFFFF --autoconnect
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uqmi --sync
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uqmi --set-device-operating-mode persistent_low_power
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'';
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};
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};
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tv.systemd.services.wwan.operators = cfg.operators;
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};
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}
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