Merge pull request #110389 from tnias/usbguard_test_pr

nixos/tests/usbguard: init

nixos/tests/all-tests.nix

@@ -402,6 +402,7 @@ in
   unbound = handleTest ./unbound.nix {};
   unit-php = handleTest ./web-servers/unit-php.nix {};
   upnp = handleTest ./upnp.nix {};
+  usbguard = handleTest ./usbguard.nix {};
   uwsgi = handleTest ./uwsgi.nix {};
   v2ray = handleTest ./v2ray.nix {};
   vault = handleTest ./vault.nix {};

nixos/tests/usbguard.nix

@@ -0,0 +1,62 @@
+import ./make-test-python.nix ({ pkgs, ... }: {
+  name = "usbguard";
+  meta = with pkgs.stdenv.lib.maintainers; {
+    maintainers = [ tnias ];
+  };
+
+  machine =
+    { ... }:
+    {
+      services.usbguard = {
+        enable = true;
+        IPCAllowedUsers = [ "alice" "root" ];
+
+        # As virtual USB devices get attached to the "QEMU USB Hub" we need to
+        # allow Hubs. Otherwise we would have to explicitly allow them too.
+        rules = ''
+          allow with-interface equals { 09:00:00 }
+        '';
+      };
+      imports = [ ./common/user-account.nix ];
+    };
+
+  testScript = ''
+    # create a blank disk image for our fake USB stick
+    with open(machine.state_dir + "/usbstick.img", "wb") as stick:
+        stick.write(b"\x00" * (1024 * 1024))
+
+    # wait for machine to have started and the usbguard service to be up
+    machine.wait_for_unit("usbguard.service")
+
+    with subtest("IPC access control"):
+        # User "alice" is allowed to access the IPC interface
+        machine.succeed("su alice -c 'usbguard list-devices'")
+
+        # User "bob" is not allowed to access the IPC interface
+        machine.fail("su bob -c 'usbguard list-devices'")
+
+    with subtest("check basic functionality"):
+        # at this point we expect that no USB HDD is connected
+        machine.fail("usbguard list-devices | grep -E 'QEMU USB HARDDRIVE'")
+
+        # insert usb device
+        machine.send_monitor_command(
+            f"drive_add 0 id=stick,if=none,file={stick.name},format=raw"
+        )
+        machine.send_monitor_command("device_add usb-storage,id=stick,drive=stick")
+
+        # the attached USB HDD should show up after a short while
+        machine.wait_until_succeeds("usbguard list-devices | grep -E 'QEMU USB HARDDRIVE'")
+
+        # at this point there should be a **blocked** USB HDD
+        machine.succeed("usbguard list-devices | grep -E 'block.*QEMU USB HARDDRIVE'")
+        machine.fail("usbguard list-devices | grep -E ' allow .*QEMU USB HARDDRIVE'")
+
+        # allow storage devices
+        machine.succeed("usbguard allow-device 'with-interface { 08:*:* }'")
+
+        # at this point there should be an **allowed** USB HDD
+        machine.succeed("usbguard list-devices | grep -E ' allow .*QEMU USB HARDDRIVE'")
+        machine.fail("usbguard list-devices | grep -E ' block .*QEMU USB HARDDRIVE'")
+  '';
+})

pkgs/os-specific/linux/usbguard/default.nix

@@ -3,6 +3,7 @@
 , fetchFromGitHub
 , autoreconfHook
 , installShellFiles
+, nixosTests
 , asciidoc
 , pkg-config
 , libxslt
@@ -73,6 +74,8 @@ stdenv.mkDerivation rec {
     installShellCompletion --zsh --name _usbguard scripts/usbguard-zsh-completion
   '';
 
+  passthru.tests = nixosTests.usbguard;
+
   meta = with lib; {
     description = "The USBGuard software framework helps to protect your computer against BadUSB";
     longDescription = ''