ma 3 umts: init

2 files changed, 77 insertions, 0 deletions

diff --git a/makefu/3modules/default.nix b/makefu/3modules/default.nix
index 218c9138..f007a841 100644
--- a/makefu/3modules/default.nix
+++ b/makefu/3modules/default.nix
@@ -3,6 +3,7 @@ _:
 {
   imports = [
     ./snapraid.nix
+    ./umts.nix
   ];
 }
 
diff --git a/makefu/3modules/umts.nix b/makefu/3modules/umts.nix
new file mode 100644
index 00000000..d7be45f6
--- /dev/null
+++ b/makefu/3modules/umts.nix
@@ -0,0 +1,76 @@
+{ config, lib, pkgs, ... }:
+
+with lib;
+
+let
+  # TODO: currently it is only netzclub
+  umts-bin = pkgs.writeScriptBin "umts" ''
+    #!/bin/sh
+    set -euf
+    systemctl start umts
+    trap "systemctl stop umts;trap - INT TERM EXIT;exit" INT TERM EXIT
+    echo nameserver 8.8.8.8 | tee -a /etc/resolv.conf
+    journalctl -xfu umts
+  '';
+
+  wvdial-defaults = ''
+    Phone = *99***1#
+    Dial Command = ATDT
+    Modem = ${cfg.modem-device}
+    Baud = 460800
+    Init1 = AT+CGDCONT=1,"IP","pinternet.interkom.de","",0,0
+    Init2 = ATZ
+    Init3 = ATQ0 V1 E1 S0=0 &C1 &D2 +FCLASS=0
+    ISDN = 0
+    Modem Type = Analog Modem
+    Username = netzclub
+    Password = netzclub
+    Stupid Mode = 1
+    Idle Seconds = 0'';
+
+  cfg = config.makefu.umts;
+
+  out = {
+    options.makefu.umts = api;
+    config = mkIf cfg.enable imp;
+  };
+
+  api = {
+    enable = mkEnableOption "umts";
+
+    modem-device = mkOption {
+      default = "/dev/ttyUSB0";
+      type = types.str;
+      description = ''
+        path to modem device, use <filename>/dev/serial/by-id/...</filename>
+        to avoid race conditions.
+      '';
+    };
+  };
+
+  imp = {
+    environment.shellAliases = {
+      umts = "sudo ${umts-bin}/bin/umts";
+    };
+    environment.systemPackages = [ ];
+
+    environment.wvdial.dialerDefaults = wvdial-defaults;
+
+    systemd.targets.network-umts = {
+      description = "System is running on UMTS";
+      unitConfig.StopWhenUnneeded = true;
+    };
+
+    systemd.services.umts = {
+      description = "UMTS wvdial Service";
+      before = [ "network-umts.target" ];
+
+      serviceConfig = {
+        Type = "simple";
+        Restart = "always";
+        RestartSec = "4s";
+        ExecStart = "${pkgs.wvdial}/bin/wvdial -n";
+      };
+    };
+  };
+in out