Add authentication on HTTP API.

Add LoginHandler and register.

Add method to create user in AppConfig.

Add login check in Server.

README.md

@@ -7,8 +7,14 @@ This is a work-in-progress kinda of game launcher. LivingRoom is a server softwa
 The server includes a (working but very WIP) HTTP API for third-party clients and a web interface.
 
 ## Features
+### Server
+- [x] Game scanner
+  - [ ] Automatically deindex removed game
+- [x] SQLite DB
+- [x] Metadata
+
 ### HTTP API
-- [ ] Authentication
+- [x] Authentication
 - [x] Library info
 - [x] Game info
 - [x] Downloads
@@ -24,7 +30,7 @@ The server includes a (working but very WIP) HTTP API for third-party clients an
   - [x] Deindex game
   - [x] Trigger new scan
 - [x] Downloads (from the API)
-- [x] User Management
+- [ ] User Management
 
 ## Stack
  - **Freemarker** for web rendering

shell.nix

@@ -0,0 +1,9 @@
+# shell.nix
+{ pkgs ? import <nixpkgs> {} }:
+
+pkgs.mkShell {
+  buildInputs = with pkgs; [
+    javaPackages.compiler.openjdk21
+  ];
+  JAVA_HOME = pkgs.javaPackages.compiler.openjdk21 + "/lib/openjdk";
+}

src/main/java/org/adrianvictor/livingroom/config/AppConfig.java

@@ -30,6 +30,7 @@ public class AppConfig {
     public void setUsers(Map<String, UserConfig> users) {
         this.users = (users != null) ? users : new HashMap<>();
     }
+    public void addUser(String name, UserConfig config) { this.users.put(name, config); }
 
     public void hashPlaintextPasswords() {
         if (users == null) return;

src/main/java/org/adrianvictor/livingroom/config/ConfigLoader.java

@@ -13,7 +13,6 @@ public class ConfigLoader {
 
     private static AppConfig config;
 
-    @SuppressWarnings("unchecked")
     public static AppConfig load(String path) throws Exception {
         if (config != null) return config;
 

src/main/java/org/adrianvictor/livingroom/http/Handlers.java

@@ -1,12 +1,11 @@
 package org.adrianvictor.livingroom.http;
 
 import org.adrianvictor.livingroom.http.handlers.*;
-import org.adrianvictor.livingroom.web.pages.Remove;
 
 import java.util.HashMap;
 
 public class Handlers {
-    private static HashMap<Handler, String> map = new HashMap<>();
+    private static final HashMap<Handler, String> map = new HashMap<>();
 
     static {
         map.put(new CatalogHandler(), "/catalog");
@@ -14,6 +13,8 @@ public class Handlers {
         map.put(new FileHandler(), "/download");
         map.put(new WebHandler(), "/web");
         map.put(new StaticWebHandler(), "/static");
+        map.put(new WebRedirectHandler(), "/");
+        map.put(new LoginHandler(), "/login");
     }
 
     public static HashMap<Handler, String> getAll() {

src/main/java/org/adrianvictor/livingroom/http/HttpResponse.java

@@ -16,6 +16,14 @@ public record HttpResponse(
         );
     }
 
+    public static HttpResponse text(int status, String text) {
+        return new HttpResponse(
+                400,
+                text.getBytes(),
+                Map.of()
+        );
+    }
+
     public static HttpResponse ok(byte[] body, String contentType) {
         return ok(body, contentType, new HashMap<>());
     }

src/main/java/org/adrianvictor/livingroom/http/Server.java

@@ -5,9 +5,9 @@ import com.sun.net.httpserver.HttpHandler;
 import com.sun.net.httpserver.HttpServer;
 import org.adrianvictor.livingroom.Logger;
 import org.adrianvictor.livingroom.Main;
-import org.adrianvictor.livingroom.http.handlers.FileHandler;
-import org.adrianvictor.livingroom.http.handlers.ImageHandler;
-import org.adrianvictor.livingroom.http.handlers.StaticWebHandler;
+import org.adrianvictor.livingroom.auth.Session;
+import org.adrianvictor.livingroom.http.handlers.*;
+import org.adrianvictor.livingroom.http.utils.AuthenticationHelper;
 
 import java.io.IOException;
 import java.io.OutputStream;
@@ -42,7 +42,7 @@ public class Server {
     public void registerHandler(Handler handler, String path) {
         httpServer.createContext(path, new HttpHandler() {
             @Override
-            public void handle(HttpExchange exchange) throws IOException {
+            public void handle(HttpExchange exchange) {
                 try {
                     String fullPath = exchange.getRequestURI().getPath();
 
@@ -68,13 +68,20 @@ public class Server {
                     exchange.getResponseHeaders().add("Access-Control-Allow-Methods", "GET, POST, PUT, DELETE, OPTIONS");
                     exchange.getResponseHeaders().add("Access-Control-Allow-Headers", "Content-Type");
 
-                    if (handler instanceof FileHandler) {
-                        ((FileHandler) handler).handleStream(exchange, decoded);
-                    } else if (handler instanceof ImageHandler) {
-                        ((ImageHandler) handler).handleStream(exchange, decoded);
-                    } else if (handler instanceof StaticWebHandler) {
-                        ((StaticWebHandler) handler).handleStream(exchange, decoded);
-                    } else {
+                    if (!(handler instanceof WebHandler) && !(handler instanceof LoginHandler)) {
+                        Session session = AuthenticationHelper.getAuthenticatedSession(exchange);
+                        if (session == null) {
+                            try {
+                                AuthenticationHelper.sendUnauthorized(exchange, null);
+                            } catch (IOException ignored) {}
+                        }
+                    }
+
+                    switch (handler) {
+                        case FileHandler fileHandler -> fileHandler.handleStream(exchange, decoded);
+                        case ImageHandler imageHandler -> imageHandler.handleStream(exchange, decoded);
+                        case StaticWebHandler staticWebHandler -> staticWebHandler.handleStream(exchange, decoded);
+                        default -> {
                             HttpResponse result = handler.result(baseAddress, decoded, exchange);
 
                             for (Map.Entry<String, String> header : result.headers().entrySet()) {
@@ -87,10 +94,11 @@ public class Server {
                             os.write(result.body());
                             os.close();
                         }
+                    }
                 } catch (IOException ignored) {
                 } catch (Exception e) {
                     Logger.error("Handler error: " + e.getMessage());
-                    e.printStackTrace();
+                    //e.printStackTrace();
                     try {
                         exchange.sendResponseHeaders(500, 0);
                         exchange.close();

src/main/java/org/adrianvictor/livingroom/http/handlers/LoginHandler.java

@@ -0,0 +1,69 @@
+package org.adrianvictor.livingroom.http.handlers;
+
+import com.sun.net.httpserver.HttpExchange;
+import org.adrianvictor.livingroom.Logger;
+import org.adrianvictor.livingroom.auth.Session;
+import org.adrianvictor.livingroom.auth.SessionManager;
+import org.adrianvictor.livingroom.http.Handler;
+import org.adrianvictor.livingroom.http.HttpResponse;
+import org.adrianvictor.livingroom.http.utils.AuthenticationHelper;
+import org.adrianvictor.livingroom.services.UserService;
+import org.json.simple.JSONObject;
+import org.json.simple.parser.JSONParser;
+import org.json.simple.parser.ParseException;
+
+import java.io.IOException;
+import java.nio.charset.StandardCharsets;
+
+public class LoginHandler implements Handler {
+
+    @Override
+    public HttpResponse result(String baseAddress, String path, HttpExchange exchange) {
+        if (!"POST".equalsIgnoreCase(exchange.getRequestMethod())) {
+            return HttpResponse.text(400, "Not post.");
+        }
+
+        Session session = AuthenticationHelper.getAuthenticatedSession(exchange);
+
+        if (session != null) {
+            return HttpResponse.text(400, "You're already logged in.");
+        }
+
+        try {
+            JSONParser parser = new JSONParser();
+            byte[] body = exchange.getRequestBody().readAllBytes();
+            String bodyString = new String(body, StandardCharsets.UTF_8);
+
+            JSONObject json = (JSONObject) parser.parse(bodyString);
+            String username = (String) json.get("username");
+            String password = (String) json.get("password");
+
+            if (password == null || username == null) {
+                return HttpResponse.text(400, "You must provide an username and password.");
+            }
+
+            try {
+                if (UserService.getInstance().getUser(username).auth(password)) {
+                    Session s = SessionManager.getInstance().createSession(username);
+
+                    exchange.getResponseHeaders().add("Set-Cookie",
+                            "SESSIONID=" + s.getSessionId() + "; Path=/; HttpOnly; SameSite=Strict");
+
+                    String jsonResponse = "{\"success\": true, \"sessionId\": \"" + s.getSessionId() + "\"}";
+                    return HttpResponse.ok(jsonResponse.getBytes(StandardCharsets.UTF_8), "application/json");
+                } else {
+                    return HttpResponse.text(401, "Invalid username or password");
+                }
+            } catch (Exception e) {
+                Logger.error("User lookup error: " + e.getMessage());
+                return HttpResponse.text(401, "Invalid username or password");
+            }
+        } catch (IOException e) {
+            Logger.error("Error reading request body: " + e.getMessage());
+            return HttpResponse.text(400, "Invalid request");
+        } catch (ParseException e) {
+            Logger.error("Error parsing JSON: " + e.getMessage());
+            return HttpResponse.text(400, "Invalid JSON format");
+        }
+    }
+}

src/main/java/org/adrianvictor/livingroom/http/handlers/WebHandler.java

@@ -83,7 +83,6 @@ public class WebHandler implements Handler {
 
         if ("POST".equals(method)) {
             try {
-                // Read POST body
                 String body = new String(exchange.getRequestBody().readAllBytes());
                 String[] params = body.split("&");
                 String username = null;

src/main/java/org/adrianvictor/livingroom/http/handlers/WebRedirectHandler.java

@@ -0,0 +1,13 @@
+package org.adrianvictor.livingroom.http.handlers;
+
+import com.sun.net.httpserver.HttpExchange;
+import org.adrianvictor.livingroom.http.Handler;
+import org.adrianvictor.livingroom.http.HttpResponse;
+
+public class WebRedirectHandler implements Handler {
+
+    @Override
+    public HttpResponse result(String baseAddress, String path, HttpExchange exchange) {
+        return HttpResponse.redirect("/web");
+    }
+}

src/main/java/org/adrianvictor/livingroom/http/utils/AuthenticationHelper.java

@@ -0,0 +1,44 @@
+package org.adrianvictor.livingroom.http.utils;
+
+import com.sun.net.httpserver.HttpExchange;
+import org.adrianvictor.livingroom.auth.Session;
+import org.adrianvictor.livingroom.auth.SessionManager;
+import org.adrianvictor.livingroom.utils.net.Cookie;
+
+import java.io.IOException;
+
+public class AuthenticationHelper {
+    public static Session getAuthenticatedSession(HttpExchange exchange) {
+        String id = Cookie.getSessionIdFromCookies(exchange);
+        if (id != null) {
+            Session session = SessionManager.getInstance().getSession(id);
+            if (session != null) {
+                return session;
+            }
+        }
+
+        String bearerToken = getBearerToken(exchange);
+        if (bearerToken != null) {
+            Session session = SessionManager.getInstance().getSession(bearerToken);
+            if (session != null) {
+                return session;
+            }
+        }
+        return null;
+    }
+
+    private static String getBearerToken(HttpExchange exchange) {
+        String auth = exchange.getRequestHeaders().getFirst("Authorization");
+        if (auth != null && auth.startsWith("Bearer ")) {
+            return auth.substring(7);
+        }
+        return null;
+    }
+
+    public static void sendUnauthorized(HttpExchange exchange, String message) throws IOException {
+        byte[] response = (message == null) ? "Not authorized.".getBytes() : message.getBytes();
+        exchange.sendResponseHeaders(401, response.length);
+        exchange.getResponseBody().write(response);
+        exchange.getResponseBody().close();
+    }
+}

src/main/java/org/adrianvictor/livingroom/web/Pages.java

@@ -5,7 +5,7 @@ import org.adrianvictor.livingroom.web.pages.*;
 import java.util.HashMap;
 
 public class Pages {
-    private static HashMap<String, Page> map = new HashMap<>();
+    private static final HashMap<String, Page> map = new HashMap<>();
 
     static {
         Index index = new Index();

src/main/java/org/adrianvictor/livingroom/web/pages/Login.java

@@ -12,9 +12,6 @@ public class Login implements Page {
     @Override
     public String result(Configuration cfg, String baseAddress, String path, Map<String, Object> data, HttpExchange exchange) {
         try {
-            // Check if this is a POST request
-            // For now, just show the login form
-
             freemarker.template.Template template = cfg.getTemplate("login.ftl");
 
             StringWriter writer = new StringWriter();

src/main/java/org/adrianvictor/livingroom/web/pages/Remove.java

@@ -3,13 +3,10 @@ package org.adrianvictor.livingroom.web.pages;
 import com.sun.net.httpserver.HttpExchange;
 import freemarker.template.Configuration;
 import org.adrianvictor.livingroom.Logger;
-import org.adrianvictor.livingroom.Main;
 import org.adrianvictor.livingroom.data.Database;
-import org.adrianvictor.livingroom.data.Indexer;
 import org.adrianvictor.livingroom.web.Page;
 import org.adrianvictor.livingroom.web.QuickResponses;
 
-import java.io.File;
 import java.util.Map;
 
 public class Remove implements Page {