Merge pull request 'Networking' (#2) from network into master

Reviewed-on: #2

src/de/steamwar/network/packets/NetworkPacket.java

@@ -0,0 +1,49 @@
+/*
+ * This file is a part of the SteamWar software.
+ *
+ * Copyright (C) 2022  SteamWar.de-Serverteam
+ *
+ * This program is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU Affero General Public License as published by
+ * the Free Software Foundation, either version 3 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ * GNU Affero General Public License for more details.
+ *
+ * You should have received a copy of the GNU Affero General Public License
+ * along with this program.  If not, see <https://www.gnu.org/licenses/>.
+ */
+
+package de.steamwar.network.packets;
+
+import lombok.EqualsAndHashCode;
+import lombok.SneakyThrows;
+
+import java.io.*;
+
+@EqualsAndHashCode
+public abstract class NetworkPacket implements Serializable {
+
+    @SneakyThrows
+    public byte[] serialize() {
+        ByteArrayOutputStream baos = new ByteArrayOutputStream();
+        ObjectOutputStream oos = new ObjectOutputStream(baos);
+        oos.writeObject(this);
+        oos.flush();
+        return baos.toByteArray();
+    }
+
+    public static void handle(byte[] data) {
+        PacketHandler.handlePacket(deserialize(data));
+    }
+
+    @SneakyThrows
+    public static NetworkPacket deserialize(byte[] data) {
+        ByteArrayInputStream bais = new ByteArrayInputStream(data);
+        ObjectInputStream ois = new ObjectInputStream(bais);
+        return (NetworkPacket) ois.readObject();
+    }
+}

src/de/steamwar/network/packets/PacketHandler.java

@@ -0,0 +1,76 @@
+/*
+ * This file is a part of the SteamWar software.
+ *
+ * Copyright (C) 2022  SteamWar.de-Serverteam
+ *
+ * This program is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU Affero General Public License as published by
+ * the Free Software Foundation, either version 3 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ * GNU Affero General Public License for more details.
+ *
+ * You should have received a copy of the GNU Affero General Public License
+ * along with this program.  If not, see <https://www.gnu.org/licenses/>.
+ */
+
+package de.steamwar.network.packets;
+
+import lombok.SneakyThrows;
+
+import java.lang.annotation.Retention;
+import java.lang.annotation.RetentionPolicy;
+import java.lang.reflect.Method;
+import java.util.ArrayList;
+import java.util.HashMap;
+import java.util.List;
+import java.util.Map;
+
+public abstract class PacketHandler {
+
+    private static final List<PacketHandler> PACKET_HANDLERS = new ArrayList<>();
+
+    private final Map<Class<? extends NetworkPacket>, Method> HANDLER_MAP = new HashMap<>();
+
+    public static void handlePacket(NetworkPacket packet) {
+        for (PacketHandler handler : PACKET_HANDLERS) {
+            handler.handle(packet);
+        }
+    }
+
+    protected PacketHandler() {
+        Method[] methods = getClass().getMethods();
+        for (Method method : methods) {
+            if(method.getParameterCount() != 1 || !NetworkPacket.class.isAssignableFrom(method.getParameterTypes()[0])) {
+                continue;
+            }
+            if (method.isAnnotationPresent(Handler.class)) {
+                Class<? extends NetworkPacket> packetClass = (Class<? extends NetworkPacket>) method.getParameterTypes()[0];
+                HANDLER_MAP.put(packetClass, method);
+            }
+        }
+    }
+
+    public void register() {
+        PACKET_HANDLERS.add(this);
+    }
+
+    public void unregister() {
+        PACKET_HANDLERS.remove(this);
+    }
+
+    @SneakyThrows
+    public void handle(NetworkPacket packet) {
+        Method method = HANDLER_MAP.get(packet.getClass());
+        if (method == null) {
+            return;
+        }
+        method.invoke(this, packet);
+    }
+
+    @Retention(RetentionPolicy.RUNTIME)
+    protected @interface Handler {}
+}

src/de/steamwar/network/packets/client/ExecuteCommandPacket.java

@@ -0,0 +1,37 @@
+/*
+ * This file is a part of the SteamWar software.
+ *
+ * Copyright (C) 2022  SteamWar.de-Serverteam
+ *
+ * This program is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU Affero General Public License as published by
+ * the Free Software Foundation, either version 3 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ * GNU Affero General Public License for more details.
+ *
+ * You should have received a copy of the GNU Affero General Public License
+ * along with this program.  If not, see <https://www.gnu.org/licenses/>.
+ */
+
+package de.steamwar.network.packets.client;
+
+import de.steamwar.network.packets.NetworkPacket;
+import lombok.AllArgsConstructor;
+import lombok.EqualsAndHashCode;
+import lombok.Getter;
+import lombok.NoArgsConstructor;
+
+@AllArgsConstructor
+@NoArgsConstructor
+@EqualsAndHashCode(callSuper = true)
+@Getter
+public class ExecuteCommandPacket extends NetworkPacket {
+
+    private static final long serialVersionUID = 6283457297487602016L;
+    private int playerId;
+    private String command;
+}

src/de/steamwar/network/packets/client/ImALobbyPacket.java

@@ -0,0 +1,29 @@
+/*
+ * This file is a part of the SteamWar software.
+ *
+ * Copyright (C) 2022  SteamWar.de-Serverteam
+ *
+ * This program is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU Affero General Public License as published by
+ * the Free Software Foundation, either version 3 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ * GNU Affero General Public License for more details.
+ *
+ * You should have received a copy of the GNU Affero General Public License
+ * along with this program.  If not, see <https://www.gnu.org/licenses/>.
+ */
+
+package de.steamwar.network.packets.client;
+
+import de.steamwar.network.packets.NetworkPacket;
+import lombok.EqualsAndHashCode;
+import lombok.Getter;
+
+@EqualsAndHashCode(callSuper = true)
+public class ImALobbyPacket extends NetworkPacket {
+    private static final long serialVersionUID = 8110246509205246654L;
+}

src/de/steamwar/network/packets/client/InventoryCallbackPacket.java

@@ -0,0 +1,88 @@
+/*
+ * This file is a part of the SteamWar software.
+ *
+ * Copyright (C) 2022  SteamWar.de-Serverteam
+ *
+ * This program is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU Affero General Public License as published by
+ * the Free Software Foundation, either version 3 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ * GNU Affero General Public License for more details.
+ *
+ * You should have received a copy of the GNU Affero General Public License
+ * along with this program.  If not, see <https://www.gnu.org/licenses/>.
+ */
+
+package de.steamwar.network.packets.client;
+
+import de.steamwar.network.packets.NetworkPacket;
+import lombok.*;
+
+@Builder
+@NoArgsConstructor
+@AllArgsConstructor
+@EqualsAndHashCode(callSuper = true)
+@Getter
+public class InventoryCallbackPacket extends NetworkPacket {
+    private static final long serialVersionUID = -261823209186008718L;
+    @Builder.Default
+    private int position = -1;
+    private int owner;
+    private CallbackType type;
+    @Builder.Default
+    private ClickType clickType = ClickType.UNKNOWN;
+
+    public enum CallbackType {
+        CLICK,
+        CLOSE,
+    }
+
+    public enum ClickType {
+        LEFT,
+        SHIFT_LEFT,
+        RIGHT,
+        SHIFT_RIGHT,
+        WINDOW_BORDER_LEFT,
+        WINDOW_BORDER_RIGHT,
+        MIDDLE,
+        NUMBER_KEY,
+        DOUBLE_CLICK,
+        DROP,
+        CONTROL_DROP,
+        CREATIVE,
+        UNKNOWN;
+
+        public boolean isKeyboardClick() {
+            return this == NUMBER_KEY || this == DROP || this == CONTROL_DROP;
+        }
+
+        public boolean isCreativeAction() {
+            return this == MIDDLE || this == CREATIVE;
+        }
+
+        public boolean isRightClick() {
+            return this == RIGHT || this == SHIFT_RIGHT;
+        }
+
+        public boolean isLeftClick() {
+            return this == LEFT || this == SHIFT_LEFT || this == DOUBLE_CLICK || this == CREATIVE;
+        }
+
+        public boolean isShiftClick() {
+            return this == SHIFT_LEFT || this == SHIFT_RIGHT || this == CONTROL_DROP;
+        }
+
+        public static ClickType getByName(String name) {
+            for (ClickType type : values()) {
+                if (type.name().equalsIgnoreCase(name)) {
+                    return type;
+                }
+            }
+            return UNKNOWN;
+        }
+    }
+}

src/de/steamwar/network/packets/client/PrepareSchemPacket.java

@@ -0,0 +1,38 @@
+/*
+ * This file is a part of the SteamWar software.
+ *
+ * Copyright (C) 2022  SteamWar.de-Serverteam
+ *
+ * This program is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU Affero General Public License as published by
+ * the Free Software Foundation, either version 3 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ * GNU Affero General Public License for more details.
+ *
+ * You should have received a copy of the GNU Affero General Public License
+ * along with this program.  If not, see <https://www.gnu.org/licenses/>.
+ */
+
+package de.steamwar.network.packets.client;
+
+import de.steamwar.network.packets.NetworkPacket;
+import lombok.AllArgsConstructor;
+import lombok.EqualsAndHashCode;
+import lombok.Getter;
+import lombok.NoArgsConstructor;
+
+@AllArgsConstructor
+@NoArgsConstructor
+@EqualsAndHashCode(callSuper = true)
+@Getter
+public class PrepareSchemPacket extends NetworkPacket {
+
+    private static final long serialVersionUID = -4798561188105813349L;
+    private int player;
+    private int schem;
+    private String schemType;
+}

src/de/steamwar/network/packets/common/FightEndsPacket.java

@@ -0,0 +1,41 @@
+/*
+ * This file is a part of the SteamWar software.
+ *
+ * Copyright (C) 2022  SteamWar.de-Serverteam
+ *
+ * This program is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU Affero General Public License as published by
+ * the Free Software Foundation, either version 3 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ * GNU Affero General Public License for more details.
+ *
+ * You should have received a copy of the GNU Affero General Public License
+ * along with this program.  If not, see <https://www.gnu.org/licenses/>.
+ */
+
+package de.steamwar.network.packets.common;
+
+import de.steamwar.network.packets.NetworkPacket;
+import lombok.*;
+
+import java.util.List;
+
+@Builder
+@AllArgsConstructor
+@NoArgsConstructor
+@EqualsAndHashCode(callSuper = true)
+@Getter
+public class FightEndsPacket extends NetworkPacket {
+
+    private static final long serialVersionUID = 1279352415549011332L;
+    private byte win;
+    private int blueSchem;
+    private int redSchem;
+    private List<Integer> bluePlayers;
+    private List<Integer> redPlayers;
+    private String gameMode;
+}

src/de/steamwar/network/packets/common/FightInfoPacket.java

@@ -0,0 +1,49 @@
+/*
+ * This file is a part of the SteamWar software.
+ *
+ * Copyright (C) 2022  SteamWar.de-Serverteam
+ *
+ * This program is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU Affero General Public License as published by
+ * the Free Software Foundation, either version 3 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ * GNU Affero General Public License for more details.
+ *
+ * You should have received a copy of the GNU Affero General Public License
+ * along with this program.  If not, see <https://www.gnu.org/licenses/>.
+ */
+
+package de.steamwar.network.packets.common;
+
+import de.steamwar.network.packets.NetworkPacket;
+import lombok.*;
+
+import java.util.List;
+
+@Builder
+@AllArgsConstructor
+@NoArgsConstructor
+@EqualsAndHashCode(callSuper = true)
+@Getter
+public class FightInfoPacket extends NetworkPacket {
+
+    private static final long serialVersionUID = 7448644597856605853L;
+    private @With String serverName;
+    private String gameMode;
+    private String arena;
+    private String blueName;
+    private String redName;
+    private String fightState;
+    private int countdown;
+    private int blueLeader;
+    private int redLeader;
+    private int blueSchem;
+    private int redSchem;
+    private List<Integer> bluePlayers;
+    private List<Integer> redPlayers;
+    private List<Integer> spectators;
+}

src/de/steamwar/network/packets/server/BaumemberUpdatePacket.java

@@ -0,0 +1,29 @@
+/*
+ * This file is a part of the SteamWar software.
+ *
+ * Copyright (C) 2022  SteamWar.de-Serverteam
+ *
+ * This program is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU Affero General Public License as published by
+ * the Free Software Foundation, either version 3 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ * GNU Affero General Public License for more details.
+ *
+ * You should have received a copy of the GNU Affero General Public License
+ * along with this program.  If not, see <https://www.gnu.org/licenses/>.
+ */
+
+package de.steamwar.network.packets.server;
+
+import de.steamwar.network.packets.NetworkPacket;
+import lombok.EqualsAndHashCode;
+
+@EqualsAndHashCode(callSuper = true)
+public class BaumemberUpdatePacket extends NetworkPacket {
+    private static final long serialVersionUID = 6863118892424244051L;
+
+}

src/de/steamwar/network/packets/server/CloseInventoryPacket.java

@@ -0,0 +1,36 @@
+/*
+ * This file is a part of the SteamWar software.
+ *
+ * Copyright (C) 2022  SteamWar.de-Serverteam
+ *
+ * This program is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU Affero General Public License as published by
+ * the Free Software Foundation, either version 3 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ * GNU Affero General Public License for more details.
+ *
+ * You should have received a copy of the GNU Affero General Public License
+ * along with this program.  If not, see <https://www.gnu.org/licenses/>.
+ */
+
+package de.steamwar.network.packets.server;
+
+import de.steamwar.network.packets.NetworkPacket;
+import lombok.AllArgsConstructor;
+import lombok.EqualsAndHashCode;
+import lombok.Getter;
+import lombok.NoArgsConstructor;
+
+@AllArgsConstructor
+@NoArgsConstructor
+@EqualsAndHashCode(callSuper = true)
+@Getter
+public class CloseInventoryPacket extends NetworkPacket {
+
+    private static final long serialVersionUID = -2191021190060504521L;
+    private int playerId;
+}

src/de/steamwar/network/packets/server/InventoryPacket.java

@@ -0,0 +1,41 @@
+/*
+ * This file is a part of the SteamWar software.
+ *
+ * Copyright (C) 2022  SteamWar.de-Serverteam
+ *
+ * This program is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU Affero General Public License as published by
+ * the Free Software Foundation, either version 3 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ * GNU Affero General Public License for more details.
+ *
+ * You should have received a copy of the GNU Affero General Public License
+ * along with this program.  If not, see <https://www.gnu.org/licenses/>.
+ */
+
+package de.steamwar.network.packets.server;
+
+import de.steamwar.network.packets.NetworkPacket;
+import lombok.AllArgsConstructor;
+import lombok.EqualsAndHashCode;
+import lombok.Getter;
+import lombok.NoArgsConstructor;
+
+import java.util.Map;
+
+@AllArgsConstructor
+@NoArgsConstructor
+@EqualsAndHashCode(callSuper = true)
+@Getter
+public class InventoryPacket extends NetworkPacket {
+
+    private static final long serialVersionUID = 8071052544654047316L;
+    private String title;
+    private int player;
+    private int size;
+    private Map<Integer, String> items;
+}

src/de/steamwar/network/packets/server/PingPacket.java

@@ -0,0 +1,35 @@
+/*
+ * This file is a part of the SteamWar software.
+ *
+ * Copyright (C) 2022  SteamWar.de-Serverteam
+ *
+ * This program is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU Affero General Public License as published by
+ * the Free Software Foundation, either version 3 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ * GNU Affero General Public License for more details.
+ *
+ * You should have received a copy of the GNU Affero General Public License
+ * along with this program.  If not, see <https://www.gnu.org/licenses/>.
+ */
+
+package de.steamwar.network.packets.server;
+
+import de.steamwar.network.packets.NetworkPacket;
+import lombok.AllArgsConstructor;
+import lombok.EqualsAndHashCode;
+import lombok.Getter;
+import lombok.NoArgsConstructor;
+
+@NoArgsConstructor
+@AllArgsConstructor
+@EqualsAndHashCode(callSuper = true)
+@Getter
+public class PingPacket extends NetworkPacket {
+    private static final long serialVersionUID = 714647343959550378L;
+    private int id;
+}

src/de/steamwar/network/packets/server/StartingServerPacket.java

@@ -0,0 +1,35 @@
+/*
+ * This file is a part of the SteamWar software.
+ *
+ * Copyright (C) 2022  SteamWar.de-Serverteam
+ *
+ * This program is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU Affero General Public License as published by
+ * the Free Software Foundation, either version 3 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ * GNU Affero General Public License for more details.
+ *
+ * You should have received a copy of the GNU Affero General Public License
+ * along with this program.  If not, see <https://www.gnu.org/licenses/>.
+ */
+
+package de.steamwar.network.packets.server;
+
+import de.steamwar.network.packets.NetworkPacket;
+import lombok.AllArgsConstructor;
+import lombok.EqualsAndHashCode;
+import lombok.Getter;
+import lombok.NoArgsConstructor;
+
+@NoArgsConstructor
+@AllArgsConstructor
+@EqualsAndHashCode(callSuper = true)
+@Getter
+public class StartingServerPacket extends NetworkPacket {
+    private static final long serialVersionUID = 2808607245898121801L;
+    private int user;
+}

testsrc/de/steamwar/RandomGenerator.java

@@ -0,0 +1,83 @@
+/*
+ * This file is a part of the SteamWar software.
+ *
+ * Copyright (C) 2022  SteamWar.de-Serverteam
+ *
+ * This program is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU Affero General Public License as published by
+ * the Free Software Foundation, either version 3 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ * GNU Affero General Public License for more details.
+ *
+ * You should have received a copy of the GNU Affero General Public License
+ * along with this program.  If not, see <https://www.gnu.org/licenses/>.
+ */
+
+package de.steamwar;
+
+import java.util.*;
+import java.util.function.Function;
+
+public class RandomGenerator {
+
+    private static final Random random = new Random();
+    private static final Map<Class<?>, Function<Class<?>, ?>> generators = new HashMap<>();
+
+    static {
+        generators.put(Integer.class, (clazz) -> random.nextInt());
+        generators.put(int.class, (clazz) -> random.nextInt());
+        generators.put(Double.class, (clazz) -> random.nextDouble());
+        generators.put(double.class, (clazz) -> random.nextInt());
+        generators.put(Boolean.class, (clazz) -> random.nextBoolean());
+        generators.put(boolean.class, (clazz) -> random.nextBoolean());
+        generators.put(Byte.class, (clazz) -> (byte) random.nextInt(127));
+        generators.put(byte.class, (clazz) -> (byte) random.nextInt(127));
+
+        generators.put(List.class, aClass -> {
+            int length = random.nextInt(10);
+            List<Object> list = new ArrayList<>();
+            for (int i = 0; i < length; i++) {
+                list.add(generators.get(Integer.class).apply(Integer.class));
+            }
+
+            return list;
+        });
+
+        generators.put(String.class, aClass -> {
+            int length = random.nextInt(10);
+            StringBuilder builder = new StringBuilder();
+
+            for (int i = 0; i < length; i++) {
+                builder.append(random.nextInt());
+            }
+
+            return builder.toString();
+        });
+
+        generators.put(Map.class, aClass -> {
+            int length = random.nextInt(10);
+            Map<Object, Object> map = new HashMap<>();
+            for (int i = 0; i < length; i++) {
+                map.put(generators.get(Integer.class).apply(Integer.class), generators.get(String.class).apply(String.class));
+            }
+
+            return map;
+        });
+    }
+
+    public static <T> T generateRandom(Class<T> clazz) {
+        if(clazz.isEnum()) {
+            return generateRandomEnum(clazz);
+        } else {
+            return (T) generators.get(clazz).apply(clazz);
+        }
+    }
+
+    public static <T> T generateRandomEnum(Class<T> clazz) {
+        return clazz.getEnumConstants()[random.nextInt(clazz.getEnumConstants().length)];
+    }
+}

testsrc/de/steamwar/network/AllPackets.java

@@ -0,0 +1,80 @@
+/*
+ * This file is a part of the SteamWar software.
+ *
+ * Copyright (C) 2022  SteamWar.de-Serverteam
+ *
+ * This program is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU Affero General Public License as published by
+ * the Free Software Foundation, either version 3 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ * GNU Affero General Public License for more details.
+ *
+ * You should have received a copy of the GNU Affero General Public License
+ * along with this program.  If not, see <https://www.gnu.org/licenses/>.
+ */
+
+package de.steamwar.network;
+
+import de.steamwar.network.packets.NetworkPacket;
+import de.steamwar.network.packets.client.ExecuteCommandPacket;
+import de.steamwar.network.packets.client.ImALobbyPacket;
+import de.steamwar.network.packets.client.InventoryCallbackPacket;
+import de.steamwar.network.packets.client.PrepareSchemPacket;
+import de.steamwar.network.packets.common.FightEndsPacket;
+import de.steamwar.network.packets.common.FightInfoPacket;
+import de.steamwar.network.packets.server.*;
+import lombok.SneakyThrows;
+
+import java.lang.reflect.Constructor;
+import java.lang.reflect.Parameter;
+import java.util.ArrayList;
+import java.util.List;
+
+import static de.steamwar.RandomGenerator.*;
+
+public class AllPackets {
+
+    public static final Class<? extends NetworkPacket>[] packets = new Class[]{
+            ExecuteCommandPacket.class,
+            ImALobbyPacket.class,
+            InventoryCallbackPacket.class,
+            PrepareSchemPacket.class,
+            FightEndsPacket.class,
+            FightInfoPacket.class,
+            BaumemberUpdatePacket.class,
+            CloseInventoryPacket.class,
+            InventoryPacket.class,
+            PingPacket.class,
+            StartingServerPacket.class
+    };
+
+    @SneakyThrows
+    public static List<NetworkPacket> getAllPackets() {
+        List<NetworkPacket> packets = new ArrayList<>();
+
+        for (Class<? extends NetworkPacket> packet : AllPackets.packets) {
+            Constructor<? extends NetworkPacket> longConstructor = (Constructor<? extends NetworkPacket>) packet.getConstructors()[0];
+            for (Constructor<?> constructor : packet.getConstructors()) {
+                if (constructor.getParameterCount() > longConstructor.getParameterCount()) {
+                    longConstructor = (Constructor<? extends NetworkPacket>) constructor;
+                }
+            }
+
+            Object[] args = new Object[longConstructor.getParameterCount()];
+            Parameter[] parameters = longConstructor.getParameters();
+            for (int i = 0; i < parameters.length; i++) {
+                Parameter parameter = parameters[i];
+                parameter.getName();
+                args[i] = generateRandom(parameter.getType());
+            }
+
+            NetworkPacket packetInstance = longConstructor.newInstance(args);
+            packets.add(packetInstance);
+        }
+        return packets;
+    }
+}

testsrc/de/steamwar/network/PacketHandlerTest.java

@@ -0,0 +1,52 @@
+/*
+ * This file is a part of the SteamWar software.
+ *
+ * Copyright (C) 2022  SteamWar.de-Serverteam
+ *
+ * This program is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU Affero General Public License as published by
+ * the Free Software Foundation, either version 3 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ * GNU Affero General Public License for more details.
+ *
+ * You should have received a copy of the GNU Affero General Public License
+ * along with this program.  If not, see <https://www.gnu.org/licenses/>.
+ */
+
+package de.steamwar.network;
+
+import de.steamwar.network.packets.PacketHandler;
+import org.junit.Before;
+import org.junit.Test;
+
+import java.lang.reflect.InvocationTargetException;
+
+import static org.hamcrest.MatcherAssert.*;
+import static org.hamcrest.Matchers.*;
+
+public class PacketHandlerTest {
+
+    TestPacketHandler packetHandler;
+
+    @Before
+    public void setUp() {
+        packetHandler = new TestPacketHandler();
+        packetHandler.register();
+    }
+
+    @Test
+    public void testPacketHandler() {
+        TestPacket packet = new TestPacket();
+        try {
+            PacketHandler.handlePacket(packet);
+        } catch (Exception e) {
+            assertThat(e, instanceOf(InvocationTargetException.class));
+            assertThat(e.getCause(), instanceOf(SecurityException.class));
+            assertThat(e.getCause().getMessage(), equalTo(packet.getClass().getName()));
+        }
+    }
+}

testsrc/de/steamwar/network/PacketTest.java

@@ -0,0 +1,38 @@
+/*
+ * This file is a part of the SteamWar software.
+ *
+ * Copyright (C) 2022  SteamWar.de-Serverteam
+ *
+ * This program is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU Affero General Public License as published by
+ * the Free Software Foundation, either version 3 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ * GNU Affero General Public License for more details.
+ *
+ * You should have received a copy of the GNU Affero General Public License
+ * along with this program.  If not, see <https://www.gnu.org/licenses/>.
+ */
+
+package de.steamwar.network;
+
+import de.steamwar.network.packets.NetworkPacket;
+import org.junit.Test;
+
+import static org.hamcrest.Matchers.*;
+import static org.hamcrest.MatcherAssert.*;
+
+public class PacketTest {
+
+    @Test
+    public void testPacketSerialization() {
+        for (NetworkPacket allPacket : AllPackets.getAllPackets()) {
+            byte[] data = allPacket.serialize();
+            NetworkPacket deserializedPacket = NetworkPacket.deserialize(data);
+            assertThat("Packet: " + allPacket.getClass().getName() + " is not correctly deserialized", allPacket, equalTo(deserializedPacket));
+        }
+    }
+}

testsrc/de/steamwar/network/TestPacket.java

@@ -0,0 +1,30 @@
+/*
+ * This file is a part of the SteamWar software.
+ *
+ * Copyright (C) 2022  SteamWar.de-Serverteam
+ *
+ * This program is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU Affero General Public License as published by
+ * the Free Software Foundation, either version 3 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ * GNU Affero General Public License for more details.
+ *
+ * You should have received a copy of the GNU Affero General Public License
+ * along with this program.  If not, see <https://www.gnu.org/licenses/>.
+ */
+
+package de.steamwar.network;
+
+import de.steamwar.network.packets.NetworkPacket;
+import lombok.EqualsAndHashCode;
+import lombok.NoArgsConstructor;
+
+@EqualsAndHashCode(callSuper = true)
+@NoArgsConstructor
+public class TestPacket extends NetworkPacket {
+    private static final long serialVersionUID = -9079104421295590626L;
+}

testsrc/de/steamwar/network/TestPacketHandler.java

@@ -0,0 +1,30 @@
+/*
+ * This file is a part of the SteamWar software.
+ *
+ * Copyright (C) 2022  SteamWar.de-Serverteam
+ *
+ * This program is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU Affero General Public License as published by
+ * the Free Software Foundation, either version 3 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ * GNU Affero General Public License for more details.
+ *
+ * You should have received a copy of the GNU Affero General Public License
+ * along with this program.  If not, see <https://www.gnu.org/licenses/>.
+ */
+
+package de.steamwar.network;
+
+import de.steamwar.network.packets.PacketHandler;
+
+public class TestPacketHandler extends PacketHandler {
+
+    @Handler
+    public void handle(TestPacket packet) {
+        throw new SecurityException(packet.getClass().getName());
+    }
+}