show info for 402 response on unlock

src/main/java/org/cryptomator/ui/common/FxmlFile.java

@@ -14,6 +14,7 @@ public enum FxmlFile {
 	HEALTH_START("/fxml/health_start.fxml"), //
 	HEALTH_CHECK_LIST("/fxml/health_check_list.fxml"), //
 	HUB_AUTH_FLOW("/fxml/hub_auth_flow.fxml"), //
+	HUB_LICENSE_EXCEEDED("/fxml/hub_license_exceeded.fxml"), //
 	HUB_RECEIVE_KEY("/fxml/hub_receive_key.fxml"), //
 	HUB_REGISTER_DEVICE("/fxml/hub_register_device.fxml"), //
 	HUB_REGISTER_SUCCESS("/fxml/hub_register_success.fxml"), //

src/main/java/org/cryptomator/ui/keyloading/hub/HubKeyLoadingModule.java

@@ -92,6 +92,13 @@ public abstract class HubKeyLoadingModule {
 		return fxmlLoaders.createScene(FxmlFile.HUB_AUTH_FLOW);
 	}
 
+	@Provides
+	@FxmlScene(FxmlFile.HUB_LICENSE_EXCEEDED)
+	@KeyLoadingScoped
+	static Scene provideLicenseExceededScene(@KeyLoading FxmlLoaderFactory fxmlLoaders) {
+		return fxmlLoaders.createScene(FxmlFile.HUB_LICENSE_EXCEEDED);
+	}
+
 	@Provides
 	@FxmlScene(FxmlFile.HUB_RECEIVE_KEY)
 	@KeyLoadingScoped
@@ -139,6 +146,11 @@ public abstract class HubKeyLoadingModule {
 		return new NewPasswordController(resourceBundle, strengthRater);
 	}
 
+	@Binds
+	@IntoMap
+	@FxControllerKey(LicenseExceededController.class)
+	abstract FxController bindLicenseExceededController(LicenseExceededController controller);
+
 	@Binds
 	@IntoMap
 	@FxControllerKey(ReceiveKeyController.class)

src/main/java/org/cryptomator/ui/keyloading/hub/LicenseExceededController.java

@@ -0,0 +1,23 @@
+package org.cryptomator.ui.keyloading.hub;
+
+import org.cryptomator.ui.common.FxController;
+import org.cryptomator.ui.keyloading.KeyLoading;
+
+import javax.inject.Inject;
+import javafx.fxml.FXML;
+import javafx.stage.Stage;
+
+public class LicenseExceededController implements FxController {
+
+	private final Stage window;
+
+	@Inject
+	public LicenseExceededController(@KeyLoading Stage window) {
+		this.window = window;
+	}
+
+	@FXML
+	public void close() {
+		window.close();
+	}
+}

src/main/java/org/cryptomator/ui/keyloading/hub/ReceiveKeyController.java

@@ -8,8 +8,6 @@ import org.cryptomator.ui.common.FxmlFile;
 import org.cryptomator.ui.common.FxmlScene;
 import org.cryptomator.ui.keyloading.KeyLoading;
 import org.cryptomator.ui.keyloading.KeyLoadingScoped;
-import org.slf4j.Logger;
-import org.slf4j.LoggerFactory;
 
 import javax.inject.Inject;
 import javax.inject.Named;
@@ -44,10 +42,11 @@ public class ReceiveKeyController implements FxController {
 	private final Lazy<Scene> registerDeviceScene;
 	private final Lazy<Scene> unauthorizedScene;
 	private final URI vaultBaseUri;
+	private final Lazy<Scene> licenseExceededScene;
 	private final HttpClient httpClient;
 
 	@Inject
-	public ReceiveKeyController(@KeyLoading Vault vault, ExecutorService executor, @KeyLoading Stage window, @Named("deviceId") String deviceId, @Named("bearerToken") AtomicReference<String> tokenRef, CompletableFuture<JWEObject> result, @FxmlScene(FxmlFile.HUB_REGISTER_DEVICE) Lazy<Scene> registerDeviceScene, @FxmlScene(FxmlFile.HUB_UNAUTHORIZED_DEVICE) Lazy<Scene> unauthorizedScene) {
+	public ReceiveKeyController(@KeyLoading Vault vault, ExecutorService executor, @KeyLoading Stage window, @Named("deviceId") String deviceId, @Named("bearerToken") AtomicReference<String> tokenRef, CompletableFuture<JWEObject> result, @FxmlScene(FxmlFile.HUB_REGISTER_DEVICE) Lazy<Scene> registerDeviceScene, @FxmlScene(FxmlFile.HUB_UNAUTHORIZED_DEVICE) Lazy<Scene> unauthorizedScene, @FxmlScene(FxmlFile.HUB_LICENSE_EXCEEDED) Lazy<Scene> licenseExceededScene) {
 		this.window = window;
 		this.deviceId = deviceId;
 		this.bearerToken = Objects.requireNonNull(tokenRef.get());
@@ -55,6 +54,7 @@ public class ReceiveKeyController implements FxController {
 		this.registerDeviceScene = registerDeviceScene;
 		this.unauthorizedScene = unauthorizedScene;
 		this.vaultBaseUri = getVaultBaseUri(vault);
+		this.licenseExceededScene = licenseExceededScene;
 		this.window.addEventHandler(WindowEvent.WINDOW_HIDING, this::windowClosed);
 		this.httpClient = HttpClient.newBuilder().executor(executor).build();
 	}
@@ -94,6 +94,10 @@ public class ReceiveKeyController implements FxController {
 		}
 	}
 
+	private void hubLicenseInsufficient() {
+		window.setScene(licenseExceededScene.get());
+	}
+
 	private void needsDeviceRegistration() {
 		window.setScene(registerDeviceScene.get());
 	}

src/main/resources/fxml/hub_license_exceeded.fxml

@@ -0,0 +1,51 @@
+<?xml version="1.0" encoding="UTF-8"?>
+
+<?import org.cryptomator.ui.controls.FontAwesome5IconView?>
+<?import javafx.geometry.Insets?>
+<?import javafx.scene.control.Button?>
+<?import javafx.scene.control.ButtonBar?>
+<?import javafx.scene.control.Label?>
+<?import javafx.scene.Group?>
+<?import javafx.scene.layout.HBox?>
+<?import javafx.scene.layout.Region?>
+<?import javafx.scene.layout.StackPane?>
+<?import javafx.scene.layout.VBox?>
+<?import javafx.scene.shape.Circle?>
+<HBox xmlns:fx="http://javafx.com/fxml"
+	  xmlns="http://javafx.com/javafx"
+	  fx:controller="org.cryptomator.ui.keyloading.hub.LicenseExceededController"
+	  minWidth="400"
+	  maxWidth="400"
+	  minHeight="145"
+	  spacing="12"
+	  alignment="TOP_LEFT">
+	<padding>
+		<Insets topRightBottomLeft="12"/>
+	</padding>
+	<children>
+		<Group>
+			<StackPane>
+				<padding>
+					<Insets topRightBottomLeft="6"/>
+				</padding>
+				<Circle styleClass="glyph-icon-orange" radius="24"/>
+				<FontAwesome5IconView styleClass="glyph-icon-white" glyph="EXCLAMATION" glyphSize="24"/>
+			</StackPane>
+		</Group>
+		<VBox HBox.hgrow="ALWAYS">
+			<Label styleClass="label-large" text="%hub.licenseExceeded.message" wrapText="true" textAlignment="LEFT">
+				<padding>
+					<Insets bottom="6" top="6"/>
+				</padding>
+			</Label>
+			<Label text="%hub.licenseExceeded.description" wrapText="true"/>
+
+			<Region VBox.vgrow="ALWAYS" minHeight="18"/>
+			<ButtonBar buttonMinWidth="120" buttonOrder="+C">
+				<buttons>
+					<Button text="%generic.button.close" ButtonBar.buttonData="CANCEL_CLOSE" defaultButton="true" onAction="#close"/>
+				</buttons>
+			</ButtonBar>
+		</VBox>
+	</children>
+</HBox>

src/main/resources/i18n/strings.properties

@@ -152,6 +152,9 @@ hub.registerFailed.description=An error was thrown in the naming process. For mo
 ### Unauthorized
 hub.unauthorized.message=Access denied
 hub.unauthorized.description=Your device has not yet been authorized to access this vault. Ask the vault owner to authorize it.
+### License Exceeded
+hub.licenseExceeded.message=License exceeded
+hub.licenseExceeded.description=Cryptomator Hub has more vault users than the license permits. To enable unlock and other management functions again, please contact your hub administrator to upgrade the license or remove users from vaults.
 
 
 # Lock