Add form to adjust Wi-Fi hotspot password

internal/app/ipc/openuc2/com.openuc2.deviceadmin.openuc2.varlink

@@ -0,0 +1,18 @@
+# com.openuc2.deviceadmin.openuc2 manages openUC2 OS-specific settings.
+interface com.openuc2.deviceadmin.openuc2
+
+# The service was unable to perform the requested operation for an unspecified reason.
+error Unknown (description: string)
+
+# NetworkManager
+
+# UpdatePSKDropInFile updates the specified connection profile (as specified via file-based name,
+# e.g. "wlan0-hotspot")'s Wi-Fi PSK drop-in snippet file (which is automatically determined)
+# with the specified cleartext password.
+# This operation does not try to regenerate the connection profile itself from the drop-in files.
+method UpdatePSKDropInFile(connProfile: string, newPw: string) -> ()
+
+# RegenerateConnProfile reassembles the file for the NetworkManager connection profile (specified by
+# its file-based name, e.g. "wlan0-hotspot") from its constituent drop-in snippet files.
+# This operation does not try to make NetworkManager reload the updated connection profile.
+method RegenerateDropInConnProfile(connProfile: string) -> ()

internal/app/ipc/openuc2/generate.go

@@ -0,0 +1,3 @@
+package comopenuc2deviceadminopenuc2
+
+//go:generate go tool varlink-go-interface-generator com.openuc2.deviceadmin.openuc2.varlink

internal/app/server/routes/boot/routes.go

@@ -116,14 +116,8 @@ func shutdownViaSidecar(ctx context.Context, method string, scc *sc.Client, l go
 	if err != nil {
 		return errors.Wrap(err, "couldn't open connection to sidecar")
 	}
-	defer func() {
-		if conn == nil {
-			return
-		}
-		if err := conn.Close(); err != nil {
-			l.Error(errors.New("couldn't close connection to sidecar"))
-		}
-	}()
+	defer sc.CloseConn(conn, l)
+
 	switch method {
 	default:
 		return errors.Errorf("unknown sidecar method %s", method)