correção de bugs

pitiupi/src/pitiupi/control/ConnectionManager.java

@@ -24,7 +24,7 @@ public class ConnectionManager {
     private TcpManager tcpManager;
     private SocketUDP socketUDP;
     private String username;
-    private InetAddress address;
+    private final InetAddress address;
     private int port;
 
     public ConnectionManager(String username, PluginManager pluginManager, int port) throws UnknownHostException {
@@ -44,8 +44,12 @@ public class ConnectionManager {
         return tcpManager.getClient(serverData, pluginId, username);
     }
 
-    public TcpServer getTcpServer(String pluginId) {
-        return tcpManager.getServer(pluginId, username, address, port);
+    public TcpServer getTcpServer(String serverName, String pluginId) {
+        return tcpManager.getServer(serverName, pluginId, username, address, port);
+    }
+
+    public void closeTcpServer(TcpServer tcpServer) {
+        tcpManager.closeServer(tcpServer);
     }
 
     public boolean sendTcp(Message message, InetAddress destinationAddress) {

pitiupi/src/pitiupi/models/ConnectionData.java

@@ -2,26 +2,33 @@ package pitiupi.models;
 
 import java.io.Serializable;
 import java.net.InetAddress;
+import java.util.Objects;
 import java.util.UUID;
 
-public class ConnectionData implements Serializable {
+public final class ConnectionData implements Serializable {
     private final UUID uuid;
     private final int port;
+
+    private final String connectionName;
+
     private final String ownerName;
     private final InetAddress ownerAddress;
-    private final String plugin;
+    private final String pluginId;
     private final boolean isServer;
 
-    public ConnectionData(String ownerName, InetAddress ownerAddress, String plugin, int port, boolean isServer) {
+    public ConnectionData(String connectionName, String ownerName, InetAddress ownerAddress, String pluginId, int port, boolean isServer) {
         uuid = UUID.randomUUID();
 
         this.port = port;
+        this.connectionName = connectionName;
         this.ownerName = ownerName;
         this.ownerAddress = ownerAddress;
-        this.plugin = plugin;
+        this.pluginId = pluginId;
         this.isServer = isServer;
     }
 
+
+
     public UUID getUuid() {
         return uuid;
     }
@@ -29,16 +36,56 @@ public class ConnectionData implements Serializable {
     public int getPort() {
         return port;
     }
+
+    public String getConnectionName() {
+        return connectionName;
+    }
+
     public String getOwnerName() {
         return ownerName;
     }
     public InetAddress getOwnerAddress() {
         return ownerAddress;
     }
-    public String getPlugin() {
-        return plugin;
+    public String getPluginId() {
+        return pluginId;
     }
     public boolean isServer() {
         return isServer;
     }
+
+
+
+    @Override
+    public boolean equals(Object o) {
+        if (this == o) return true;
+        if (o == null || getClass() != o.getClass()) return false;
+        ConnectionData that = (ConnectionData) o;
+
+        if (port != that.port) return false;
+        if (!uuid.equals(that.uuid)) return false;
+        if (!connectionName.equals(that.connectionName)) return false;
+        if (!Objects.equals(ownerName, that.ownerName)) return false;
+        if (!Objects.equals(ownerAddress, that.ownerAddress)) return false;
+        if (!Objects.equals(pluginId, that.pluginId)) return false;
+        return isServer == that.isServer;
+    }
+
+    @Override
+    public int hashCode() {
+        return Objects.hash(
+                uuid,
+                port,
+                connectionName,
+                ownerName,
+                ownerAddress,
+                pluginId,
+                isServer
+        );
+    }
+
+    @Override
+    public String toString() {
+        return connectionName + ": " + pluginId;
+    }
 }

pitiupi/src/pitiupi/net/tcp/TcpClient.java

@@ -15,11 +15,14 @@ public final class TcpClient extends TcpPitiupi {
             ConnectionData serverData,
             Socket socket,
             DataInputStream input,
-            DataOutputStream output)
-    {
+            DataOutputStream output
+    ) throws IllegalArgumentException {
 
         super(socket, input, output);
 
+        if (clientData == null) throw new IllegalArgumentException("clientData is null");
+        if (serverData == null) throw new IllegalArgumentException("ServerData is null");
+
         this.clientData = clientData;
         this.serverData = serverData;
     }

pitiupi/src/pitiupi/net/tcp/TcpFactory.java

@@ -4,24 +4,26 @@ import pitiupi.models.ConnectionData;
 
 import java.io.*;
 import java.net.InetAddress;
+import java.net.InetSocketAddress;
 import java.net.Socket;
 import java.util.logging.Level;
 import java.util.logging.Logger;
 
 final class TcpFactory {
-    private static final int HANDSHAKE_TIMEOUT = 1000;
+    private static final int HANDSHAKE_TIMEOUT = 3000;
     private static final int DISABLE_TIMEOUT = 0;
 
-    TcpManager manager;
+    private final TcpManager manager;
 
     TcpFactory(TcpManager manager) {
         this.manager = manager;
     }
 
     TcpPitiupi createPitiupiConnection(InetAddress receiverAddress, int port) {
-        Socket socket = null;
+        Socket socket = new Socket();
         try {
             socket = new Socket(receiverAddress, port);
+            socket.connect(new InetSocketAddress(receiverAddress, port), HANDSHAKE_TIMEOUT);
             DataOutputStream dataOutputStream = new DataOutputStream(socket.getOutputStream());
             DataInputStream dataInputStream = new DataInputStream(socket.getInputStream());
 
@@ -36,7 +38,7 @@ final class TcpFactory {
             Logger.getLogger(TcpFactory.class.getName()).log(Level.SEVERE, null, e);
         }
 
-        if (socket != null) tryClose(socket);
+        tryClose(socket);
         return null;
     }
 
@@ -44,10 +46,12 @@ final class TcpFactory {
         Socket socket = null;
         try {
             socket = new Socket(receiverAddress, port);
+            socket.connect(new InetSocketAddress(receiverAddress, port), HANDSHAKE_TIMEOUT);
             DataOutputStream dataOutputStream = new DataOutputStream(socket.getOutputStream());
             DataInputStream dataInputStream = new DataInputStream(socket.getInputStream());
 
             ConnectionData clientData = new ConnectionData(
+                    "Connection to " + serverData.getConnectionName() + " ("  + serverData.getOwnerAddress() + ")",
                     username,
                     receiverAddress,
                     pluginIdentifier,
@@ -69,8 +73,9 @@ final class TcpFactory {
         return null;
     }
 
-    TcpServer createServer(String pluginIdentifier, String username, InetAddress receiverAddress, int port) {
+    TcpServer createServer(String serverName, String pluginIdentifier, String username, InetAddress receiverAddress, int port) {
         ConnectionData data = new ConnectionData(
+                serverName,
                 username,
                 receiverAddress,
                 pluginIdentifier,
@@ -112,12 +117,16 @@ final class TcpFactory {
         }
         catch (IOException | ClassNotFoundException e) {
             Logger.getLogger(TcpFactory.class.getName()).log(Level.SEVERE, null, e);
-        }
-
+            try {
                 sendHandshakeResponse(false, dataOutputStream);
+            }
+            catch (IOException e1) {
+                Logger.getLogger(TcpFactory.class.getName()).log(Level.INFO, null, e1);
+            }
             tryClose(socket);
             return null;
         }
+    }
 
     private void sendHandshake(DataOutputStream output, ConnectionData serverData, ConnectionData clientData) throws IOException {
         TcpHandshake handshake = TcpHandshake.createPrivate(serverData, clientData);

pitiupi/src/pitiupi/net/tcp/TcpManager.java

@@ -5,6 +5,8 @@ import pitiupi.models.Messages.Message;
 
 import java.io.*;
 import java.net.*;
+import java.util.ArrayList;
+import java.util.List;
 import java.util.Map;
 import java.util.concurrent.ConcurrentHashMap;
 import java.util.concurrent.ExecutorService;
@@ -17,17 +19,23 @@ public final class TcpManager extends Thread{
     private final TcpFactory tcpFactory;
 
     private final Map<ConnectionData, TcpServer> servers;
+
+    // TODO: Atualizar a identificação das conexões públicas quando
+    // a identificação de usuário/processo for revisada.
+    // Atualmente, o mapa permite apenas uma conexão pública por endereço IP.
     private final Map<InetAddress, TcpPitiupi> connections;
+    private final List<TcpClient> clients;
     private final ExecutorService connectionExecutor;
     private final ServerSocket serverSocket;
 
     private final Consumer<byte[]> handleMessage;
 
-    private boolean isRunning;
+    private volatile boolean isRunning;
 
     public TcpManager(int port, Consumer<byte[]> handleMessage) throws IOException {
         servers = new ConcurrentHashMap<>();
         connections = new ConcurrentHashMap<>();
+        clients = new ArrayList<>();
 
         tcpFactory = new TcpFactory(this);
 
@@ -37,20 +45,27 @@ public final class TcpManager extends Thread{
         this.handleMessage = handleMessage;
     }
 
-    public TcpServer getServer(String pluginIdentifier, String username, InetAddress userAddress, int port) {
-        TcpServer tcpServer = tcpFactory.createServer(pluginIdentifier, username, userAddress, port);
+    public TcpServer getServer(String serverName, String pluginIdentifier, String username, InetAddress userAddress, int port) {
+        TcpServer tcpServer = tcpFactory.createServer(serverName, pluginIdentifier, username, userAddress, port);
         servers.put(tcpServer.getConnectionData(), tcpServer);
 
         return tcpServer;
     }
 
     public TcpClient getClient(ConnectionData serverData, String pluginIdentifier, String username) {
-        return tcpFactory.createClient(serverData, pluginIdentifier, username, serverData.getOwnerAddress(), serverData.getPort());
+        TcpClient tcpClient = tcpFactory.createClient(serverData, pluginIdentifier, username, serverData.getOwnerAddress(), serverData.getPort());
+
+        if (tcpClient == null) return null;
+
+        clients.add(tcpClient);
+        return tcpClient;
     }
 
     private TcpPitiupi createConnection(InetAddress receiverAddress, int port) {
         TcpPitiupi tcpPitiupi = tcpFactory.createPitiupiConnection(receiverAddress, port);
 
+        if  (tcpPitiupi == null) return null;
+
         manageConnectionList(tcpPitiupi, receiverAddress);
         startConnectionReceiver(tcpPitiupi);
 
@@ -58,8 +73,12 @@ public final class TcpManager extends Thread{
     }
 
     public boolean send(Message message, InetAddress receiverAddress, int port) {
+        synchronized (connections) {
             TcpPitiupi tcpPitiupi = findConnection(receiverAddress);
+
             if (tcpPitiupi == null || tcpPitiupi.isClosed()) tcpPitiupi = createConnection(receiverAddress, port);
+            if (tcpPitiupi == null) return false;
+
             try {
                 tcpPitiupi.send(message.toByteArray());
                 return true;
@@ -69,6 +88,8 @@ public final class TcpManager extends Thread{
                 return false;
             }
         }
+    }
+
     private void receive() {
         while (isRunning) {
             Socket socket = null;
@@ -89,6 +110,7 @@ public final class TcpManager extends Thread{
     }
 
     private void processConnection(Socket socket) {
+        connectionExecutor.submit(() -> {
             try {
                 TcpPitiupi tcpPitiupi = tcpFactory.createFromReceiver(socket);
 
@@ -96,17 +118,21 @@ public final class TcpManager extends Thread{
 
                 if (tcpPitiupi instanceof TcpClient client) {
                     ConnectionData serverData = client.getServerData();
-                TcpServer tcpServer = servers.get(serverData);
 
+                    TcpServer tcpServer;
+
+                    tcpServer = servers.get(serverData);
+
+                    clients.add(client);
                     tcpServer.addClient(client);
-            }
-            else {
+                } else {
                     manageConnectionList(tcpPitiupi, socket.getInetAddress());
                     startConnectionReceiver(tcpPitiupi);
                 }
             } catch (IOException e) {
                 Logger.getLogger(TcpClient.class.getName()).log(Level.SEVERE, null, e);
             }
+        });
     }
 
     public void closeManager() {
@@ -118,8 +144,29 @@ public final class TcpManager extends Thread{
             Logger.getLogger(TcpManager.class.getName()).log(Level.WARNING, null, e);
         }
 
+        for (TcpClient tcpClient : clients) {
+            try {
+                tcpClient.close();
+            }
+            catch (IOException e) {
+                Logger.getLogger(TcpManager.class.getName()).log(Level.WARNING, null, e);
+            }
+        }
+
+        for (TcpPitiupi tcpPitiupi : connections.values()) {
+            try {
+                tcpPitiupi.close();
+            }
+            catch (IOException e) {
+                Logger.getLogger(TcpManager.class.getName()).log(Level.WARNING, null, e);
+            }
+        }
+
         servers.clear();
+        clients.clear();
         connections.clear();
+
+        connectionExecutor.shutdown();
     }
 
     public void closeServer(TcpServer tcpServer) {
@@ -132,25 +179,39 @@ public final class TcpManager extends Thread{
     private TcpPitiupi findConnection(InetAddress receiverAddress) {
         return connections.get(receiverAddress);
     }
+
     public TcpServer findServer(ConnectionData serverData) {
         return servers.get(serverData);
     }
 
     private void manageConnectionList(TcpPitiupi tcpPitiupi, InetAddress receiverAddress) {
+        synchronized (connections) {
             TcpPitiupi oldPitiupiConnection = connections.put(receiverAddress, tcpPitiupi);
             if (oldPitiupiConnection != null) {
                 tcpFactory.tryClose(oldPitiupiConnection.getSocket());
             }
         }
+    }
+
     private void startConnectionReceiver(TcpPitiupi tcpPitiupi) {
         connectionExecutor.submit(() -> {
             while (!tcpPitiupi.isClosed()) {
                 try {
                     handleMessage.accept(tcpPitiupi.receive());
-                } catch (IOException e) {
+                }
+                catch (IOException e) {
                     Logger.getLogger(TcpManager.class.getName()).log(Level.SEVERE, null, e);
                     break;
                 }
+                finally {
+                    connections.remove(tcpPitiupi.getSocket().getInetAddress());
+
+                    try {
+                        tcpPitiupi.close();
+                    } catch (IOException ex) {
+                        Logger.getLogger(TcpManager.class.getName()).log(Level.INFO, null, ex);
+                    }
+                }
             }
         });
     }

pitiupi/src/pitiupi/net/tcp/TcpPitiupi.java

@@ -2,19 +2,28 @@ package pitiupi.net.tcp;
 
 import java.io.DataInputStream;
 import java.io.DataOutputStream;
+import java.io.EOFException;
 import java.io.IOException;
 import java.net.Socket;
+import java.util.logging.Level;
+import java.util.logging.Logger;
 
 class TcpPitiupi {
+    private static final int MAX_MESSAGE_SIZE = 1_048_576;
+
     protected final Socket socket;
 
     protected final DataInputStream input;
     protected final DataOutputStream output;
 
+    protected boolean isClosed;
+
     public TcpPitiupi(Socket socket, DataInputStream input, DataOutputStream output) {
         this.socket = socket;
         this.input = input;
         this.output = output;
+
+        this.isClosed = socket.isClosed();
     }
 
     /**
@@ -27,15 +36,23 @@ class TcpPitiupi {
      * @throws IOException se ocorrer um erro durante o envio
      */
     public void send(byte[] message) throws IOException {
+        if (message.length > MAX_MESSAGE_SIZE) throw new IOException("Oversized message");
+
+        try {
             output.writeInt(message.length);
             output.write(message);
             output.flush();
+        } catch (EOFException e) {
+            Logger.getLogger(TcpPitiupi.class.getName()).log(Level.INFO, null, e);
+            isClosed = true;
+            throw new IOException("Socket closed");
+        }
     }
 
     /**
      * Recebe uma mensagem da conexão.
      *
-     * <p>Primeiro lê o tamanho da mensagem e, em seguida, lê aquantidade
+     * <p>Primeiro lê o tamanho da mensagem e, em seguida, lê a quantidade
      * correspondente de bytes.</p>
      *
      * @return mensagem recebida
@@ -43,21 +60,34 @@ class TcpPitiupi {
      * for encerrada antes que a mensagem seja completamente recebida
      */
     public byte[] receive() throws IOException {
+        try {
             int length = input.readInt();
 
-        if (length < 0) throw new IOException("Invalid message length.");
+            if (length < 0 || length > MAX_MESSAGE_SIZE) throw new IOException("Invalid message length.");
 
             byte[] message = input.readNBytes(length);
 
             if (message.length != length) {
-            throw new IOException("Connection closed before receiving the complete message.");
+                Logger.getLogger(TcpPitiupi.class.getName()).log(Level.INFO, null, "Socket closed");
+                isClosed = true;
+                throw new IOException("Socket closed");
             }
 
             return message;
         }
+        catch (EOFException e) {
+            Logger.getLogger(TcpPitiupi.class.getName()).log(Level.INFO, null, e);
+            isClosed = true;
+            throw new IOException("Socket closed");
+        }
+    }
 
     public boolean isClosed() {
-        return socket.isClosed();
+        if (socket.isClosed()) isClosed = true;
+        if (socket.isInputShutdown()) isClosed = true;
+        if (socket.isOutputShutdown()) isClosed = true;
+
+        return isClosed;
     }
 
     Socket getSocket() {

pitiupi/src/pitiupi/net/tcp/TcpServer.java

@@ -29,13 +29,13 @@ public final class TcpServer {
         clients.put(tcpClient.getClientData(), tcpClient);
     }
 
-    public TcpClient receive() {
+    public TcpClient receive() throws IOException {
         try {
             return buffer.take();
         }
         catch (InterruptedException e) {
             Logger.getLogger(TcpServer.class.getName()).log(Level.SEVERE, null, e);
-            return null;
+            throw new IOException(e);
         }
     }
 
@@ -43,6 +43,16 @@ public final class TcpServer {
         return clients.keySet().stream().toList();
     }
 
+    public void removeClient(ConnectionData clientData) {
+        TcpClient client = clients.remove(clientData);
+        try {
+            client.close();
+        }
+        catch (IOException e) {
+            Logger.getLogger(TcpServer.class.getName()).log(Level.INFO, null, e);
+        }
+    }
+
     public ConnectionData getConnectionData() {
         return connectionData;
     }

pitiupi/src/pitiupi/plugin/Pitiupi.java

@@ -33,14 +33,18 @@ public class Pitiupi {
         return connectionManager.sendTcp(message, address);
     }
 
-    public TcpServer openTcpServer(String pluginId) {
-        return connectionManager.getTcpServer(pluginId);
+    public TcpServer openTcpServer(String serverName, String pluginId) {
+        return connectionManager.getTcpServer(serverName, pluginId);
     }
 
     public TcpClient connectToTcpServer(ConnectionData connectionData, String pluginId) {
         return connectionManager.connectToTcpServer(connectionData, pluginId);
     }
 
+    public void closeTcpServer(TcpServer tcpServer) {
+        connectionManager.closeTcpServer(tcpServer);
+    }
+
     public String getUserName() {
         return connectionManager.getUserName();
     }