android: Add initial frontend for LAN network rooms (#76)

Reviewed-on: https://git.eden-emu.dev/eden-emu/eden/pulls/76
Co-authored-by: Briar <205427297+icy-briar@users.noreply.github.com>
Co-committed-by: Briar <205427297+icy-briar@users.noreply.github.com>

6 files changed, 468 insertions, 1 deletions

diff --git a/src/common/android/android_common.cpp b/src/common/android/android_common.cpp
index e79005658d..0df2dd7b35 100644
--- a/src/common/android/android_common.cpp
+++ b/src/common/android/android_common.cpp
@@ -1,6 +1,9 @@
 // SPDX-FileCopyrightText: Copyright 2023 yuzu Emulator Project
 // SPDX-License-Identifier: GPL-2.0-or-later
 
+// SPDX-FileCopyrightText: Copyright yuzu/Citra Emulator Project / Eden Emulator Project
+// SPDX-License-Identifier: GPL-3.0-or-later
+
 #include "android_common.h"
 
 #include <string>
@@ -34,6 +37,15 @@ jstring ToJString(JNIEnv* env, std::string_view str) {
                           static_cast<jint>(converted_string.size()));
 }
 
+jobjectArray ToJStringArray(JNIEnv* env, const std::vector<std::string>& strs) {
+    jobjectArray array =
+            env->NewObjectArray(static_cast<jsize>(strs.size()), env->FindClass("java/lang/String"), env->NewStringUTF(""));
+    for (std::size_t i = 0; i < strs.size(); ++i) {
+        env->SetObjectArrayElement(array, static_cast<jsize>(i), ToJString(env, strs[i]));
+    }
+    return array;
+}
+
 jstring ToJString(JNIEnv* env, std::u16string_view str) {
     return ToJString(env, Common::UTF16ToUTF8(str));
 }
diff --git a/src/common/android/android_common.h b/src/common/android/android_common.h
index d0ccb4ec2f..05e2c2515b 100644
--- a/src/common/android/android_common.h
+++ b/src/common/android/android_common.h
@@ -1,6 +1,9 @@
 // SPDX-FileCopyrightText: Copyright 2023 yuzu Emulator Project
 // SPDX-License-Identifier: GPL-2.0-or-later
 
+// SPDX-FileCopyrightText: Copyright yuzu/Citra Emulator Project / Eden Emulator Project
+// SPDX-License-Identifier: GPL-3.0-or-later
+
 #pragma once
 
 #include <string>
@@ -19,7 +22,7 @@ jobject ToJDouble(JNIEnv* env, double value);
 
 s32 GetJInteger(JNIEnv* env, jobject jinteger);
 jobject ToJInteger(JNIEnv* env, s32 value);
-
+jobjectArray ToJStringArray(JNIEnv* env, const std::vector<std::string>& strs);
 bool GetJBoolean(JNIEnv* env, jobject jboolean);
 jobject ToJBoolean(JNIEnv* env, bool value);
 
diff --git a/src/common/android/id_cache.cpp b/src/common/android/id_cache.cpp
index 1145cbdf28..649fafca09 100644
--- a/src/common/android/id_cache.cpp
+++ b/src/common/android/id_cache.cpp
@@ -1,6 +1,9 @@
 // SPDX-FileCopyrightText: Copyright 2023 yuzu Emulator Project
 // SPDX-License-Identifier: GPL-2.0-or-later
 
+// SPDX-FileCopyrightText: Copyright yuzu/Citra Emulator Project / Eden Emulator Project
+// SPDX-License-Identifier: GPL-3.0-or-later
+
 #include <jni.h>
 
 #include "applets/software_keyboard.h"
@@ -8,6 +11,9 @@
 #include "common/assert.h"
 #include "common/fs/fs_android.h"
 #include "video_core/rasterizer_interface.h"
+#include "common/android/multiplayer/multiplayer.h"
+#include <network/network.h>
+
 
 static JavaVM* s_java_vm;
 static jclass s_native_library_class;
@@ -88,6 +94,9 @@ static jmethodID s_yuzu_input_device_get_supports_vibration;
 static jmethodID s_yuzu_input_device_vibrate;
 static jmethodID s_yuzu_input_device_get_axes;
 static jmethodID s_yuzu_input_device_has_keys;
+static jmethodID s_add_netplay_message;
+static jmethodID s_clear_chat;
+
 
 static constexpr jint JNI_VERSION = JNI_VERSION_1_6;
 
@@ -388,6 +397,15 @@ jmethodID GetYuzuDeviceHasKeys() {
     return s_yuzu_input_device_has_keys;
 }
 
+jmethodID GetAddNetPlayMessage() {
+    return s_add_netplay_message;
+}
+
+jmethodID ClearChat() {
+    return s_clear_chat;
+}
+
+
 #ifdef __cplusplus
 extern "C" {
 #endif
@@ -547,6 +565,10 @@ jint JNI_OnLoad(JavaVM* vm, void* reserved) {
     s_yuzu_input_device_has_keys =
         env->GetMethodID(yuzu_input_device_interface, "hasKeys", "([I)[Z");
     env->DeleteLocalRef(yuzu_input_device_interface);
+    s_add_netplay_message = env->GetStaticMethodID(s_native_library_class, "addNetPlayMessage",
+        "(ILjava/lang/String;)V");
+    s_clear_chat = env->GetStaticMethodID(s_native_library_class, "clearChat", "()V");
+
 
     // Initialize Android Storage
     Common::FS::Android::RegisterCallbacks(env, s_native_library_class);
@@ -582,6 +604,8 @@ void JNI_OnUnload(JavaVM* vm, void* reserved) {
 
     // UnInitialize applets
     SoftwareKeyboard::CleanupJNI(env);
+
+    NetworkShutdown();
 }
 
 #ifdef __cplusplus
diff --git a/src/common/android/id_cache.h b/src/common/android/id_cache.h
index cd2844dcc6..0b64bbc866 100644
--- a/src/common/android/id_cache.h
+++ b/src/common/android/id_cache.h
@@ -1,10 +1,14 @@
 // SPDX-FileCopyrightText: 2023 yuzu Emulator Project
 // SPDX-License-Identifier: GPL-3.0-or-later
 
+// SPDX-FileCopyrightText: Copyright yuzu/Citra Emulator Project / Eden Emulator Project
+// SPDX-License-Identifier: GPL-3.0-or-later
+
 #pragma once
 
 #include <future>
 #include <jni.h>
+#include <network/network.h>
 
 #include "video_core/rasterizer_interface.h"
 
@@ -108,5 +112,8 @@ jmethodID GetYuzuDeviceGetSupportsVibration();
 jmethodID GetYuzuDeviceVibrate();
 jmethodID GetYuzuDeviceGetAxes();
 jmethodID GetYuzuDeviceHasKeys();
+jmethodID GetAddNetPlayMessage();
+jmethodID ClearChat();
+
 
 } // namespace Common::Android
diff --git a/src/common/android/multiplayer/multiplayer.cpp b/src/common/android/multiplayer/multiplayer.cpp
new file mode 100644
index 0000000000..41d46d71b3
--- /dev/null
+++ b/src/common/android/multiplayer/multiplayer.cpp
@@ -0,0 +1,353 @@
+// Copyright 2024 Mandarine Project
+// Licensed under GPLv2 or any later version
+// Refer to the license.txt file included.
+
+// SPDX-FileCopyrightText: Copyright yuzu/Citra Emulator Project / Eden Emulator Project
+// SPDX-License-Identifier: GPL-3.0-or-later
+
+#include "common/android/id_cache.h"
+#include "multiplayer.h"
+
+#include "common/android/android_common.h"
+
+#include "core/core.h"
+#include "network/network.h"
+#include "android/log.h"
+
+
+#include <thread>
+#include <chrono>
+
+namespace IDCache = Common::Android;
+Network::RoomNetwork* room_network;
+
+void AddNetPlayMessage(jint type, jstring msg) {
+    IDCache::GetEnvForThread()->CallStaticVoidMethod(IDCache::GetNativeLibraryClass(),
+                                                     IDCache::GetAddNetPlayMessage(), type, msg);
+}
+
+void AddNetPlayMessage(int type, const std::string& msg) {
+    JNIEnv* env = IDCache::GetEnvForThread();
+    AddNetPlayMessage(type, Common::Android::ToJString(env, msg));
+}
+
+void ClearChat() {
+    IDCache::GetEnvForThread()->CallStaticVoidMethod(IDCache::GetNativeLibraryClass(),
+                                                     IDCache::ClearChat());
+}
+
+
+bool NetworkInit(Network::RoomNetwork* room_network_) {
+    room_network = room_network_;
+    bool result = room_network->Init();
+
+    if (!result) {
+        return false;
+    }
+
+    if (auto member = room_network->GetRoomMember().lock()) {
+        // register the network structs to use in slots and signals
+        member->BindOnStateChanged([](const Network::RoomMember::State& state) {
+            if (state == Network::RoomMember::State::Joined ||
+                state == Network::RoomMember::State::Moderator) {
+                NetPlayStatus status;
+                std::string msg;
+                switch (state) {
+                    case Network::RoomMember::State::Joined:
+                        status = NetPlayStatus::ROOM_JOINED;
+                        break;
+                    case Network::RoomMember::State::Moderator:
+                        status = NetPlayStatus::ROOM_MODERATOR;
+                        break;
+                    default:
+                        return;
+                }
+                AddNetPlayMessage(static_cast<int>(status), msg);
+            }
+        });
+        member->BindOnError([](const Network::RoomMember::Error& error) {
+            NetPlayStatus status;
+            std::string msg;
+            switch (error) {
+                case Network::RoomMember::Error::LostConnection:
+                    status = NetPlayStatus::LOST_CONNECTION;
+                    break;
+                case Network::RoomMember::Error::HostKicked:
+                    status = NetPlayStatus::HOST_KICKED;
+                    break;
+                case Network::RoomMember::Error::UnknownError:
+                    status = NetPlayStatus::UNKNOWN_ERROR;
+                    break;
+                case Network::RoomMember::Error::NameCollision:
+                    status = NetPlayStatus::NAME_COLLISION;
+                    break;
+                case Network::RoomMember::Error::IpCollision:
+                    status = NetPlayStatus::MAC_COLLISION;
+                    break;
+                case Network::RoomMember::Error::WrongVersion:
+                    status = NetPlayStatus::WRONG_VERSION;
+                    break;
+                case Network::RoomMember::Error::WrongPassword:
+                    status = NetPlayStatus::WRONG_PASSWORD;
+                    break;
+                case Network::RoomMember::Error::CouldNotConnect:
+                    status = NetPlayStatus::COULD_NOT_CONNECT;
+                    break;
+                case Network::RoomMember::Error::RoomIsFull:
+                    status = NetPlayStatus::ROOM_IS_FULL;
+                    break;
+                case Network::RoomMember::Error::HostBanned:
+                    status = NetPlayStatus::HOST_BANNED;
+                    break;
+                case Network::RoomMember::Error::PermissionDenied:
+                    status = NetPlayStatus::PERMISSION_DENIED;
+                    break;
+                case Network::RoomMember::Error::NoSuchUser:
+                    status = NetPlayStatus::NO_SUCH_USER;
+                    break;
+            }
+            AddNetPlayMessage(static_cast<int>(status), msg);
+        });
+        member->BindOnStatusMessageReceived([](const Network::StatusMessageEntry& status_message) {
+            NetPlayStatus status = NetPlayStatus::NO_ERROR;
+            std::string msg(status_message.nickname);
+            switch (status_message.type) {
+                case Network::IdMemberJoin:
+                    status = NetPlayStatus::MEMBER_JOIN;
+                    break;
+                case Network::IdMemberLeave:
+                    status = NetPlayStatus::MEMBER_LEAVE;
+                    break;
+                case Network::IdMemberKicked:
+                    status = NetPlayStatus::MEMBER_KICKED;
+                    break;
+                case Network::IdMemberBanned:
+                    status = NetPlayStatus::MEMBER_BANNED;
+                    break;
+                case Network::IdAddressUnbanned:
+                    status = NetPlayStatus::ADDRESS_UNBANNED;
+                    break;
+            }
+            AddNetPlayMessage(static_cast<int>(status), msg);
+        });
+        member->BindOnChatMessageReceived([](const Network::ChatEntry& chat) {
+            NetPlayStatus status = NetPlayStatus::CHAT_MESSAGE;
+            std::string msg(chat.nickname);
+            msg += ": ";
+            msg += chat.message;
+            AddNetPlayMessage(static_cast<int>(status), msg);
+        });
+    }
+
+    return true;
+}
+NetPlayStatus NetPlayCreateRoom(const std::string& ipaddress, int port,
+                              const std::string& username, const std::string& password,
+                              const std::string& room_name, int max_players) {
+
+    __android_log_print(ANDROID_LOG_INFO, "NetPlay", "NetPlayCreateRoom called with ipaddress: %s, port: %d, username: %s, room_name: %s, max_players: %d", ipaddress.c_str(), port, username.c_str(), room_name.c_str(), max_players);
+
+    auto member = room_network->GetRoomMember().lock();
+    if (!member) {
+        return NetPlayStatus::NETWORK_ERROR;
+    }
+
+    if (member->GetState() == Network::RoomMember::State::Joining || member->IsConnected()) {
+        return NetPlayStatus::ALREADY_IN_ROOM;
+    }
+
+    auto room = room_network->GetRoom().lock();
+    if (!room) {
+        return NetPlayStatus::NETWORK_ERROR;
+    }
+
+    if (room_name.length() < 3 || room_name.length() > 20) {
+        return NetPlayStatus::CREATE_ROOM_ERROR;
+    }
+
+    // Placeholder game info
+    const AnnounceMultiplayerRoom::GameInfo game{
+            .name = "Default Game",
+            .id = 0,  // Default program ID
+    };
+
+     port = (port == 0) ? Network::DefaultRoomPort : static_cast<u16>(port);
+
+    if (!room->Create(room_name, "", ipaddress, static_cast<u16>(port), password,
+                      static_cast<u32>(std::min(max_players, 16)), username, game, nullptr, {})) {
+        return NetPlayStatus::CREATE_ROOM_ERROR;
+    }
+
+    // Failsafe timer to avoid joining before creation
+    std::this_thread::sleep_for(std::chrono::milliseconds(100));
+
+    member->Join(username, ipaddress.c_str(), static_cast<u16>(port), 0, Network::NoPreferredIP, password, "");
+
+    // Failsafe timer to avoid joining before creation
+    for (int i = 0; i < 5; i++) {
+        std::this_thread::sleep_for(std::chrono::milliseconds(100));
+        if (member->GetState() == Network::RoomMember::State::Joined ||
+            member->GetState() == Network::RoomMember::State::Moderator) {
+            return NetPlayStatus::NO_ERROR;
+        }
+    }
+
+    // If join failed while room is created, clean up the room
+    room->Destroy();
+    return NetPlayStatus::CREATE_ROOM_ERROR;
+}
+
+NetPlayStatus NetPlayJoinRoom(const std::string& ipaddress, int port,
+                            const std::string& username, const std::string& password) {
+    auto member = room_network->GetRoomMember().lock();
+    if (!member) {
+        return NetPlayStatus::NETWORK_ERROR;
+    }
+
+    port =
+            (port == 0) ? Network::DefaultRoomPort : static_cast<u16>(port);
+
+
+    if (member->GetState() == Network::RoomMember::State::Joining || member->IsConnected()) {
+        return NetPlayStatus::ALREADY_IN_ROOM;
+    }
+
+    member->Join(username, ipaddress.c_str(), static_cast<u16>(port), 0, Network::NoPreferredIP, password, "");
+
+    // Wait a bit for the connection and join process to complete
+    std::this_thread::sleep_for(std::chrono::milliseconds(500));
+
+    if (member->GetState() == Network::RoomMember::State::Joined ||
+        member->GetState() == Network::RoomMember::State::Moderator) {
+        return NetPlayStatus::NO_ERROR;
+    }
+
+    if (!member->IsConnected()) {
+        return NetPlayStatus::COULD_NOT_CONNECT;
+    }
+
+    return NetPlayStatus::WRONG_PASSWORD;
+}
+
+void NetPlaySendMessage(const std::string& msg) {
+    if (auto room = room_network->GetRoomMember().lock()) {
+        if (room->GetState() != Network::RoomMember::State::Joined &&
+            room->GetState() != Network::RoomMember::State::Moderator) {
+
+            return;
+        }
+        room->SendChatMessage(msg);
+    }
+}
+
+void NetPlayKickUser(const std::string& username) {
+    if (auto room = room_network->GetRoomMember().lock()) {
+        auto members = room->GetMemberInformation();
+        auto it = std::find_if(members.begin(), members.end(),
+                               [&username](const Network::RoomMember::MemberInformation& member) {
+                                   return member.nickname == username;
+                               });
+        if (it != members.end()) {
+            room->SendModerationRequest(Network::RoomMessageTypes::IdModKick, username);
+        }
+    }
+}
+
+void NetPlayBanUser(const std::string& username) {
+    if (auto room = room_network->GetRoomMember().lock()) {
+        auto members = room->GetMemberInformation();
+        auto it = std::find_if(members.begin(), members.end(),
+                               [&username](const Network::RoomMember::MemberInformation& member) {
+                                   return member.nickname == username;
+                               });
+        if (it != members.end()) {
+            room->SendModerationRequest(Network::RoomMessageTypes::IdModBan, username);
+        }
+    }
+}
+
+void NetPlayUnbanUser(const std::string& username) {
+    if (auto room = room_network->GetRoomMember().lock()) {
+        room->SendModerationRequest(Network::RoomMessageTypes::IdModUnban, username);
+    }
+}
+
+std::vector<std::string> NetPlayRoomInfo() {
+    std::vector<std::string> info_list;
+    if (auto room = room_network->GetRoomMember().lock()) {
+        auto members = room->GetMemberInformation();
+        if (!members.empty()) {
+            // name and max players
+            auto room_info = room->GetRoomInformation();
+            info_list.push_back(room_info.name + "|" + std::to_string(room_info.member_slots));
+            // all members
+            for (const auto& member : members) {
+                info_list.push_back(member.nickname);
+            }
+        }
+    }
+    return info_list;
+}
+
+bool NetPlayIsJoined() {
+    auto member = room_network->GetRoomMember().lock();
+    if (!member) {
+        return false;
+    }
+
+    return (member->GetState() == Network::RoomMember::State::Joined ||
+            member->GetState() == Network::RoomMember::State::Moderator);
+}
+
+bool NetPlayIsHostedRoom() {
+    if (auto room = room_network->GetRoom().lock()) {
+        return room->GetState() == Network::Room::State::Open;
+    }
+    return false;
+}
+
+void NetPlayLeaveRoom() {
+    if (auto room = room_network->GetRoom().lock()) {
+        // if you are in a room, leave it
+        if (auto member = room_network->GetRoomMember().lock()) {
+            member->Leave();
+        }
+
+        ClearChat();
+
+        // if you are hosting a room, also stop hosting
+        if (room->GetState() == Network::Room::State::Open) {
+            room->Destroy();
+        }
+    }
+}
+
+void NetworkShutdown() {
+    room_network->Shutdown();
+}
+
+bool NetPlayIsModerator() {
+    auto member = room_network->GetRoomMember().lock();
+    if (!member) {
+        return false;
+    }
+    return member->GetState() == Network::RoomMember::State::Moderator;
+}
+
+std::vector<std::string> NetPlayGetBanList() {
+    std::vector<std::string> ban_list;
+    if (auto room = room_network->GetRoom().lock()) {
+        auto [username_bans, ip_bans] = room->GetBanList();
+
+        // Add username bans
+        for (const auto& username : username_bans) {
+            ban_list.push_back(username);
+        }
+
+        // Add IP bans
+        for (const auto& ip : ip_bans) {
+            ban_list.push_back(ip);
+        }
+    }
+    return ban_list;
+}
diff --git a/src/common/android/multiplayer/multiplayer.h b/src/common/android/multiplayer/multiplayer.h
new file mode 100644
index 0000000000..4f32c514e0
--- /dev/null
+++ b/src/common/android/multiplayer/multiplayer.h
@@ -0,0 +1,68 @@
+// Copyright 2024 Mandarine Project
+// Licensed under GPLv2 or any later version
+// Refer to the license.txt file included.
+
+// SPDX-FileCopyrightText: Copyright yuzu/Citra Emulator Project / Eden Emulator Project
+// SPDX-License-Identifier: GPL-3.0-or-later
+
+#pragma once
+
+#include <string>
+#include <vector>
+
+#include <common/common_types.h>
+#include <network/network.h>
+
+enum class NetPlayStatus : s32 {
+    NO_ERROR,
+
+    NETWORK_ERROR,
+    LOST_CONNECTION,
+    NAME_COLLISION,
+    MAC_COLLISION,
+    CONSOLE_ID_COLLISION,
+    WRONG_VERSION,
+    WRONG_PASSWORD,
+    COULD_NOT_CONNECT,
+    ROOM_IS_FULL,
+    HOST_BANNED,
+    PERMISSION_DENIED,
+    NO_SUCH_USER,
+    ALREADY_IN_ROOM,
+    CREATE_ROOM_ERROR,
+    HOST_KICKED,
+    UNKNOWN_ERROR,
+
+    ROOM_UNINITIALIZED,
+    ROOM_IDLE,
+    ROOM_JOINING,
+    ROOM_JOINED,
+    ROOM_MODERATOR,
+
+    MEMBER_JOIN,
+    MEMBER_LEAVE,
+    MEMBER_KICKED,
+    MEMBER_BANNED,
+    ADDRESS_UNBANNED,
+
+    CHAT_MESSAGE,
+};
+
+bool NetworkInit(Network::RoomNetwork* room_network);
+NetPlayStatus NetPlayCreateRoom(const std::string& ipaddress, int port,
+                                const std::string& username, const std::string& password,
+                                const std::string& room_name, int max_players);
+NetPlayStatus NetPlayJoinRoom(const std::string& ipaddress, int port,
+                              const std::string& username, const std::string& password);
+std::vector<std::string> NetPlayRoomInfo();
+bool NetPlayIsJoined();
+bool NetPlayIsHostedRoom();
+bool NetPlayIsModerator();
+void NetPlaySendMessage(const std::string& msg);
+void NetPlayKickUser(const std::string& username);
+void NetPlayBanUser(const std::string& username);
+void NetPlayLeaveRoom();
+std::string NetPlayGetConsoleId();
+void NetworkShutdown();
+std::vector<std::string> NetPlayGetBanList();
+void NetPlayUnbanUser(const std::string& username);