welcome page

src/main/java/com/commafeed/backend/service/UserService.java

@@ -33,7 +33,7 @@ public class UserService {
 
 	public Optional<User> login(String name, String password) {
 		if (name == null || password == null) {
-			return null;
+			return Optional.absent();
 		}
 
 		User user = userDAO.findByName(name);

src/main/java/com/commafeed/frontend/model/ServerInfo.java

@@ -14,5 +14,6 @@ public class ServerInfo implements Serializable {
 	private String announcement;
 	private String version;
 	private String gitCommit;
+	private boolean allowRegistrations;
 
 }

src/main/java/com/commafeed/frontend/resource/ServerREST.java

@@ -39,11 +39,12 @@ public class ServerREST {
 	@GET
 	@UnitOfWork
 	@ApiOperation(value = "Get server infos", notes = "Get server infos", response = ServerInfo.class)
-	public Response get(@SecurityCheck User user) {
+	public Response get() {
 		ServerInfo infos = new ServerInfo();
 		infos.setAnnouncement(config.getApplicationSettings().getAnnouncement());
 		infos.setVersion(applicationPropertiesService.getVersion());
 		infos.setGitCommit(applicationPropertiesService.getGitCommit());
+		infos.setAllowRegistrations(config.getApplicationSettings().isAllowRegistrations());
 		return Response.ok(infos).build();
 	}
 

src/main/java/com/commafeed/frontend/resource/UserREST.java

@@ -216,10 +216,10 @@ public class UserREST {
 	public Response login(@ApiParam(required = true) LoginRequest req, @Session HttpSession session) {
 		Optional<User> user = userService.login(req.getName(), req.getPassword());
 		if (user.isPresent()) {
-			session.setAttribute(CommaFeedApplication.SESSION_USER, user);
+			session.setAttribute(CommaFeedApplication.SESSION_USER, user.get());
 			return Response.ok().build();
 		} else {
-			return Response.status(Response.Status.UNAUTHORIZED).build();
+			return Response.status(Response.Status.UNAUTHORIZED).entity("wrong username or password").build();
 		}
 	}