Add a UserInactive exception for when the user is no longer active

This is a possible error message we get when we get error code 403
(permission denied) from the server. We then handle it explicitly by
sending the user to the dashboard.

app/src/main/java/com/etesync/syncadapter/NotificationHelper.java

@@ -40,6 +40,9 @@ public class NotificationHelper {
         if (e instanceof Exceptions.UnauthorizedException) {
             App.log.log(Level.SEVERE, "Not authorized anymore", e);
             messageString = R.string.sync_error_unauthorized;
+        } else if (e instanceof Exceptions.UserInactiveException) {
+            App.log.log(Level.SEVERE, "User inactive");
+            messageString = R.string.sync_error_user_inactive;
         } else if (e instanceof Exceptions.ServiceUnavailableException) {
             App.log.log(Level.SEVERE, "Service unavailable");
             messageString = R.string.sync_error_unavailable;
@@ -91,6 +94,9 @@ public class NotificationHelper {
             Intent detailsIntent;
             if (e instanceof Exceptions.UnauthorizedException) {
                 detailsIntent = new Intent(this, AccountSettingsActivity.class);
+            } else if (e instanceof Exceptions.UserInactiveException) {
+                startActivity(new Intent(Intent.ACTION_VIEW, Constants.dashboard));
+                return;
             } else {
                 detailsIntent = new Intent(this, DebugInfoActivity.class);
             }

app/src/main/java/com/etesync/syncadapter/journalmanager/BaseManager.java

@@ -9,6 +9,7 @@ import java.util.logging.Level;
 
 import com.etesync.syncadapter.App;
 import com.etesync.syncadapter.GsonHelper;
+
 import lombok.AccessLevel;
 import lombok.Getter;
 import lombok.Setter;
@@ -41,14 +42,28 @@ abstract class BaseManager {
                     throw new Exceptions.ServiceUnavailableException("Service unavailable", Long.valueOf(response.header("Retry-After", "0")));
                 case HttpURLConnection.HTTP_UNAUTHORIZED:
                     throw new Exceptions.UnauthorizedException("Failed to connect");
+                case HttpURLConnection.HTTP_FORBIDDEN:
+                    ApiError apiError = GsonHelper.gson.fromJson(response.body().charStream(), ApiError.class);
+                    if (apiError.code.equals("service_inactive")) {
+                        throw new Exceptions.UserInactiveException(apiError.detail);
+                    }
                 default:
-                    throw new Exceptions.HttpException(response);
+                    // Fall through. We want to always throw when unsuccessful.
             }
+            throw new Exceptions.HttpException(response);
         }
 
         return response;
     }
 
+    static class ApiError {
+        String detail;
+        String code;
+
+        ApiError() {
+        }
+    }
+
     static class Base {
         @Setter(AccessLevel.PACKAGE)
         @Getter(AccessLevel.PACKAGE)

app/src/main/java/com/etesync/syncadapter/journalmanager/Exceptions.java

@@ -2,6 +2,7 @@ package com.etesync.syncadapter.journalmanager;
 
 import java.io.IOException;
 import java.io.Serializable;
+import java.net.HttpURLConnection;
 
 import at.bitfire.cert4android.Constants;
 import okhttp3.Headers;
@@ -17,6 +18,12 @@ public class Exceptions {
         }
     }
 
+    public static class UserInactiveException extends HttpException {
+        public UserInactiveException(String message) {
+            super(HttpURLConnection.HTTP_FORBIDDEN, message);
+        }
+    }
+
     public static class ServiceUnavailableException extends HttpException {
         public long retryAfter;
         public ServiceUnavailableException(String message) {

app/src/main/res/values/strings.xml

@@ -281,6 +281,7 @@
     <string name="sync_phase_push_entries">pushing entries</string>
     <string name="sync_phase_post_processing">post processing</string>
     <string name="sync_error_unauthorized">Authentication failed</string>
+    <string name="sync_error_user_inactive">User is inactive</string>
 
     <!-- cert4android -->
     <string name="certificate_notification_connection_security">EteSync: Connection security</string>