diff options
Diffstat (limited to 'tv/3modules/wwan.nix')
| -rw-r--r-- | tv/3modules/wwan.nix | 181 |
1 files changed, 181 insertions, 0 deletions
diff --git a/tv/3modules/wwan.nix b/tv/3modules/wwan.nix new file mode 100644 index 00000000..03cd512e --- /dev/null +++ b/tv/3modules/wwan.nix @@ -0,0 +1,181 @@ +with import ./lib; +{ config, pkgs, ... }: { + options = { + tv.wwan.enable = mkEnableOption "tv.wwan"; + tv.wwan.apn = mkOption { + type = with types; filename; + }; + tv.wwan.device = mkOption { + type = with types; pathname; + default = "/dev/cdc-wdm0"; + }; + tv.wwan.interface = mkOption { + type = with types; nullOr filename; + default = null; + }; + tv.wwan.operators = mkOption { + type = with types; listOf username; + default = []; + }; + tv.wwan.secrets = mkOption { + type = with types; pathname; + default = toString <secrets/wwan.json>; + # format: {"pin1":number} + }; + }; + config = let + cfg = config.tv.wwan; + in mkIf cfg.enable { + nixpkgs.overlays = singleton (self: super: { + uqmi-wrapper = pkgs.symlinkJoin { + name = "uqmi-wrapper"; + paths = [ + (pkgs.writeDashBin "uqmi" '' + exec ${pkgs.uqmi}/bin/uqmi --device=${cfg.device} "$@" + '') + (pkgs.writeTextDir "share/bash-completion/completions/uqmi" /* sh */'' + _uqmi_complete() { + case ''${#COMP_WORDS[@]} in + 2) + COMPREPLY=($(compgen -W "$( + ${pkgs.uqmi}/bin/uqmi --help 2>&1 | + ${pkgs.coreutils}/bin/tr , \\n | + ${pkgs.gnused}/bin/sed -nr 's/^ *(-[a-z-]+).*/\1/p' + )" -- "''${COMP_WORDS[1]}")) + ;; + esac + } + complete -F _uqmi_complete uqmi + '') + pkgs.uqmi + ]; + }; + }); + systemd.services.wwan = { + environment = { + SECRETS = "%d/secrets"; + }; + path = [ + pkgs.busybox + pkgs.coreutils + pkgs.iproute2 + pkgs.jq + pkgs.uqmi-wrapper + (pkgs.writeDashBin "get-interface" ( + if cfg.interface != null then /* sh */ '' + echo ${cfg.interface} + '' else /* sh */ '' + exec ${pkgs.libqmi}/bin/qmicli -d ${cfg.device} -p --get-wwan-iface + '' + )) + ]; + serviceConfig = { + LoadCredential = [ + "secrets:${cfg.secrets}" + ]; + Type = "oneshot"; + RemainAfterExit = true; + SyslogIdentifier = "wwan"; + ExecStart = pkgs.writeDash "tv.wwan.start.sh" '' + set -efu + + interface=$(get-interface) + + pin1_status=$( + uqmi --uim-get-sim-state | + jq -r '"\(.pin1_status)/\(.pin1_verify_tries)"' + ) + case $pin1_status in + verified/*) + : + ;; + not_verified/3) + pin1=$(jq .pin1 "$SECRETS") + echo "verifying PIN1" >&2 + if ! uqmi --uim-verify-pin1 "$pin1"; then + echo "error: failed to verify PIN1" >&2 + exit 1 + fi + ;; + not_verified/*) + echo "error: not trying to verify PIN1: not enough tries left" >&2 + echo \ + "please check your configuration in ${cfg.secrets}" \ + " and verify if manually using:" \ + " ${pkgs.uqmi}/bin/uqmi -d $device --uim-veriy-pin1 XXXX" \ + >&2 + exit 1 + esac + + raw_ip_path=/sys/class/net/$interface/qmi/raw_ip + raw_ip=$(cat "$raw_ip_path") + if [ "$raw_ip" != Y ]; then + echo "enabling raw-ip" >&2 + if ! echo Y > "$raw_ip_path"; then + echo "error: failed to enable raw-ip" >&2 + exit 1 + fi + fi + + operating_mode=$(uqmi --get-device-operating-mode | tr -d \") + case $operating_mode in + online) + : + ;; + persistent_low_power|low_power) + echo "settings device operating mode to online" >&2 + uqmi --set-device-operating-mode online + operating_mode=$(uqmi --get-device-operating-mode | tr -d \") + if test "$operating_mode" != online; then + echo "error: failed to set device operating mode to online" >&2 + exit 1 + fi + ;; + *) + echo "error: don't know how to change device operating mode to online: $operating_mode" >&2 + exit 1 + esac + + ip link set dev "$interface" up + + data_status=$(uqmi --get-data-status | tr -d \") + case $data_status in + connected) + : + ;; + disconnected) + echo "starting network (APN=${cfg.apn})" >&2 + sleep 1 + uqmi \ + --start-network \ + --autoconnect \ + --apn ${cfg.apn} \ + --ip-family ipv4 + sleep 1 + ;; + *) + echo "error: unsupported data status: $data_status" >&2 + exit 1 + esac + + udhcpc -q -f -n -i "$interface" + ''; + Restart = "on-failure"; + ExecStop = pkgs.writeDash "tv.wwan.stop.sh" '' + set -efu + + interface=$(get-interface) + + ip link set dev "$interface" down + uqmi --stop-network 0xFFFFFFFF --autoconnect + uqmi --sync + uqmi --set-device-operating-mode persistent_low_power + ''; + }; + }; + users.users.root.packages = [ + pkgs.uqmi-wrapper + ]; + tv.systemd.services.wwan.operators = cfg.operators; + }; +} |