Report Xbox authentication errors

launcher/src/main/java/com/skcraft/launcher/auth/MicrosoftLoginService.java

@@ -64,17 +64,16 @@ public class MicrosoftLoginService implements LoginService {
 		form.add("client_id", clientId);
 		formConsumer.accept(form);
 
-		HttpRequest request = HttpRequest.post(MS_TOKEN_URL)
+		return HttpRequest.post(MS_TOKEN_URL)
 				.bodyForm(form)
-				.execute();
+				.execute()
+				.expectResponseCodeOr(200, (req) -> {
+					TokenError error = req.returnContent().asJson(TokenError.class);
 
-		if (request.getResponseCode() == 200) {
-			return request.returnContent().asJson(TokenResponse.class);
-		} else {
-			TokenError error = request.returnContent().asJson(TokenError.class);
-
-			throw new AuthenticationException(error.errorDescription);
-		}
+					return new AuthenticationException(error.errorDescription);
+				})
+				.returnContent()
+				.asJson(TokenResponse.class);
 	}
 
 	private Profile performLogin(String microsoftToken, SavedSession previous)

launcher/src/main/java/com/skcraft/launcher/auth/microsoft/XboxTokenAuthorizer.java

@@ -1,7 +1,9 @@
 package com.skcraft.launcher.auth.microsoft;
 
+import com.skcraft.launcher.auth.AuthenticationException;
 import com.skcraft.launcher.auth.microsoft.model.*;
 import com.skcraft.launcher.util.HttpRequest;
+import com.skcraft.launcher.util.SharedLocale;
 
 import java.io.IOException;
 import java.net.URL;
@@ -12,7 +14,8 @@ public class XboxTokenAuthorizer {
 	private static final URL XBL_AUTHENTICATE_URL = url("https://user.auth.xboxlive.com/user/authenticate");
 	private static final URL XSTS_AUTHENTICATE_URL = url("https://xsts.auth.xboxlive.com/xsts/authorize");
 
-	public static XboxAuthorization authorizeWithXbox(String accessToken) throws IOException, InterruptedException {
+	public static XboxAuthorization authorizeWithXbox(String accessToken)
+			throws IOException, InterruptedException, AuthenticationException {
 		XboxAuthRequest<XblAuthProperties> xblPayload =
 				new XboxAuthRequest<>(new XblAuthProperties("d=" + accessToken));
 
@@ -20,7 +23,9 @@ public class XboxTokenAuthorizer {
 				.bodyJson(xblPayload)
 				.header("Accept", "application/json")
 				.execute()
-				.expectResponseCode(200)
+				.expectResponseCodeOr(200, (req) ->
+						new AuthenticationException("Error authenticating with Xbox Live",
+								SharedLocale.tr("login.xbox.generic")))
 				.returnContent()
 				.asJson(XboxAuthResponse.class);
 
@@ -32,10 +37,25 @@ public class XboxTokenAuthorizer {
 				.bodyJson(xstsPayload)
 				.header("Accept", "application/json")
 				.execute()
-				.expectResponseCode(200)
+				.expectResponseCodeOr(200, (req) -> {
+					XstsError xstsError = req.returnContent().asJson(XstsError.class);
+
+					return new AuthenticationException(xstsError.getMessage(), getErrorMessage(xstsError.getXErr()));
+				})
 				.returnContent()
 				.asJson(XboxAuthResponse.class);
 
 		return new XboxAuthorization(xstsResponse.getToken(), xstsResponse.getUhs());
 	}
+
+	private static String getErrorMessage(long xboxErrorCode) {
+		if (xboxErrorCode == 2148916233L) {
+			return SharedLocale.tr("login.xbox.noXboxAccount");
+		}
+		if (xboxErrorCode == 2148916238L) {
+			return SharedLocale.tr("login.xbox.isChild");
+		}
+
+		return SharedLocale.tr("login.xbox.unknown", xboxErrorCode);
+	}
 }

launcher/src/main/java/com/skcraft/launcher/auth/microsoft/model/XstsError.java

@@ -0,0 +1,15 @@
+package com.skcraft.launcher.auth.microsoft.model;
+
+import com.fasterxml.jackson.annotation.JsonIgnoreProperties;
+import com.fasterxml.jackson.databind.PropertyNamingStrategy;
+import com.fasterxml.jackson.databind.annotation.JsonNaming;
+import lombok.Data;
+
+@Data
+@JsonNaming(PropertyNamingStrategy.PascalCaseStrategy.class)
+@JsonIgnoreProperties(ignoreUnknown = true)
+public class XstsError {
+	private long xErr;
+	private String message;
+	private String redirect;
+}

launcher/src/main/java/com/skcraft/launcher/util/HttpFunction.java

@@ -0,0 +1,8 @@
+package com.skcraft.launcher.util;
+
+import java.io.IOException;
+
+@FunctionalInterface
+public interface HttpFunction<T, V> {
+	V call(T arg) throws IOException, InterruptedException;
+}

launcher/src/main/java/com/skcraft/launcher/util/HttpRequest.java

@@ -202,6 +202,27 @@ public class HttpRequest implements Closeable, ProgressObservable {
         throw new IOException("Did not get expected response code, got " + responseCode + " for " + url);
     }
 
+    /**
+     * Continue if the response code matches, otherwise call the provided function
+     * to generate an exception.
+     *
+     * @param code HTTP status code to continue on.
+     * @param onError Function invoked when the code does not match, should return an error that will be thrown.
+     * @return this object if successful
+     * @throws Exception either an {@link IOException} on I/O error or a user-defined {@link Exception} subclass
+     *         if the code does not match.
+     */
+    public <E extends Exception> HttpRequest expectResponseCodeOr(int code, HttpFunction<HttpRequest, E> onError)
+            throws E, IOException, InterruptedException {
+        int responseCode = getResponseCode();
+
+        if (code == responseCode) return this;
+
+        E exc = onError.call(this);
+        close();
+        throw exc;
+    }
+
     /**
      * Get the response code.
      *

launcher/src/main/resources/com/skcraft/launcher/lang/Launcher.properties

@@ -110,6 +110,11 @@ login.noLoginError=Please enter your account details.
 login.noLoginTitle=Missing Account
 login.minecraftNotOwnedError=Sorry, Minecraft is not owned on that account.
 
+login.xbox.generic=Failed to authenticate with Xbox Live.
+login.xbox.noXboxAccount=That account does not have an Xbox account associated!
+login.xbox.isChild=The account is a child (under 18) and cannot proceed unless it is part of a Family.
+login.xbox.unknown=An unknown error occurred while logging in with Xbox (XErr %d)
+
 console.title=Messages and Errors
 console.launcherConsoleTitle=Launcher Messages
 console.uploadLog=Upload Log