Merge pull request #4468 from citra-emu/multiplayer-v4/main

Multiplayer version 4

.gitmodules

@@ -43,3 +43,6 @@
 [submodule "externals/cppzmq"]
 	path = externals/cppzmq
 	url = https://github.com/zeromq/cppzmq
+[submodule "cpp-jwt"]
+	path = externals/cpp-jwt
+	url = https://github.com/arun11299/cpp-jwt.git

dist/license.md

@@ -4,6 +4,7 @@ Icon Name | License | Origin/Author
 --- | --- | ---
 qt_themes/default/icons/16x16/checked.png | Free for non-commercial use
 qt_themes/default/icons/16x16/connected.png | CC BY-ND 3.0 | https://icons8.com
+qt_themes/default/icons/16x16/connected_notification.png | CC BY-ND 3.0 | https://icons8.com
 qt_themes/default/icons/16x16/disconnected.png | CC BY-ND 3.0 | https://icons8.com
 qt_themes/default/icons/16x16/failed.png | Free for non-commercial use
 qt_themes/default/icons/16x16/lock.png | CC BY-ND 3.0 | https://icons8.com
@@ -11,10 +12,12 @@ qt_themes/default/icons/256x256/plus_folder.png | CC BY-ND 3.0 | https://icons8.
 qt_themes/default/icons/48x48/bad_folder.png | CC BY-ND 3.0 | https://icons8.com
 qt_themes/default/icons/48x48/chip.png | CC BY-ND 3.0 | https://icons8.com
 qt_themes/default/icons/48x48/folder.png | CC BY-ND 3.0 | https://icons8.com
+qt_themes/default/icons/48x48/no_avatar.png | CC BY-ND 3.0 | https://icons8.com
 qt_themes/default/icons/48x48/plus.png | CC0 1.0 | Designed by BreadFish64 from the Citra team
 qt_themes/default/icons/48x48/sd_card.png | CC BY-ND 3.0 | https://icons8.com
 qt_themes/qdarkstyle/icons/16x16/checked.png | Free for non-commercial use
 qt_themes/qdarkstyle/icons/16x16/connected.png | CC BY-ND 3.0 | https://icons8.com
+qt_themes/qdarkstyle/icons/16x16/connected_notification.png | CC BY-ND 3.0 | https://icons8.com
 qt_themes/qdarkstyle/icons/16x16/disconnected.png | CC BY-ND 3.0 | https://icons8.com
 qt_themes/qdarkstyle/icons/16x16/failed.png | Free for non-commercial use
 qt_themes/qdarkstyle/icons/16x16/lock.png | CC BY-ND 3.0 | https://icons8.com
@@ -22,9 +25,11 @@ qt_themes/qdarkstyle/icons/256x256/plus_folder.png | CC BY-ND 3.0 | https://icon
 qt_themes/qdarkstyle/icons/48x48/bad_folder.png | CC BY-ND 3.0 | https://icons8.com
 qt_themes/qdarkstyle/icons/48x48/chip.png | CC BY-ND 3.0 | https://icons8.com
 qt_themes/qdarkstyle/icons/48x48/folder.png | CC BY-ND 3.0 | https://icons8.com
+qt_themes/qdarkstyle/icons/48x48/no_avatar.png | CC BY-ND 3.0 | https://icons8.com
 qt_themes/qdarkstyle/icons/48x48/plus.png | CC0 1.0 | Designed by BreadFish64 from the Citra team
 qt_themes/qdarkstyle/icons/48x48/sd_card.png | CC BY-ND 3.0 | https://icons8.com
 qt_themes/colorful/icons/16x16/connected.png | CC BY-ND 3.0 | https://icons8.com
+qt_themes/colorful/icons/16x16/connected_notification.png | CC BY-ND 3.0 | https://icons8.com
 qt_themes/colorful/icons/16x16/disconnected.png | CC BY-ND 3.0 | https://icons8.com
 qt_themes/colorful/icons/16x16/lock.png | CC BY-ND 3.0 | https://icons8.com
 qt_themes/colorful/icons/256x256/plus_folder.png | CC BY-ND 3.0 | https://icons8.com

dist/qt_themes/colorful/style.qrc

@@ -2,6 +2,7 @@
     <qresource prefix="icons/colorful">
         <file alias="index.theme">icons/index.theme</file>
         <file alias="16x16/connected.png">icons/16x16/connected.png</file>
+        <file alias="16x16/connected_notification.png">icons/16x16/connected_notification.png</file>
         <file alias="16x16/disconnected.png">icons/16x16/disconnected.png</file>
         <file alias="16x16/lock.png">icons/16x16/lock.png</file>
         <file alias="48x48/bad_folder.png">icons/48x48/bad_folder.png</file>

dist/qt_themes/colorful_dark/style.qrc

@@ -2,11 +2,13 @@
     <qresource prefix="icons/colorful_dark">
         <file alias="index.theme">icons/index.theme</file>
         <file alias="16x16/connected.png">../colorful/icons/16x16/connected.png</file>
+        <file alias="16x16/connected_notification.png">../colorful/icons/16x16/connected_notification.png</file>
         <file alias="16x16/disconnected.png">../colorful/icons/16x16/disconnected.png</file>
         <file alias="16x16/lock.png">icons/16x16/lock.png</file>
         <file alias="48x48/bad_folder.png">../colorful/icons/48x48/bad_folder.png</file>
         <file alias="48x48/chip.png">../colorful/icons/48x48/chip.png</file>
         <file alias="48x48/folder.png">../colorful/icons/48x48/folder.png</file>
+        <file alias="48x48/no_avatar.png">../qdarkstyle/icons/48x48/no_avatar.png</file>
         <file alias="48x48/plus.png">../colorful/icons/48x48/plus.png</file>
         <file alias="48x48/sd_card.png">../colorful/icons/48x48/sd_card.png</file>
         <file alias="256x256/plus_folder.png">../colorful/icons/256x256/plus_folder.png</file>

dist/qt_themes/default/default.qrc

@@ -10,6 +10,8 @@
 
         <file alias="16x16/disconnected.png">icons/16x16/disconnected.png</file>
 
+        <file alias="16x16/connected_notification.png">icons/16x16/connected_notification.png</file>
+
         <file alias="16x16/lock.png">icons/16x16/lock.png</file>
 
         <file alias="48x48/bad_folder.png">icons/48x48/bad_folder.png</file>
@@ -18,6 +20,8 @@
 
         <file alias="48x48/folder.png">icons/48x48/folder.png</file>
 
+        <file alias="48x48/no_avatar.png">icons/48x48/no_avatar.png</file>
+
         <file alias="48x48/plus.png">icons/48x48/plus.png</file>
       
         <file alias="48x48/sd_card.png">icons/48x48/sd_card.png</file>

dist/qt_themes/qdarkstyle/style.qrc

@@ -3,10 +3,12 @@
     <file alias="index.theme">icons/index.theme</file>
     <file alias="16x16/connected.png">icons/16x16/connected.png</file>
     <file alias="16x16/disconnected.png">icons/16x16/disconnected.png</file>
+    <file alias="16x16/connected_notification.png">icons/16x16/connected_notification.png</file>
     <file alias="16x16/lock.png">icons/16x16/lock.png</file>
     <file alias="48x48/bad_folder.png">icons/48x48/bad_folder.png</file>
     <file alias="48x48/chip.png">icons/48x48/chip.png</file>
     <file alias="48x48/folder.png">icons/48x48/folder.png</file>
+    <file alias="48x48/no_avatar.png">icons/48x48/no_avatar.png</file>
     <file alias="48x48/plus.png">icons/48x48/plus.png</file>
     <file alias="48x48/sd_card.png">icons/48x48/sd_card.png</file>
     <file alias="256x256/plus_folder.png">icons/256x256/plus_folder.png</file>

externals/CMakeLists.txt

@@ -82,6 +82,10 @@ if (ENABLE_WEB_SERVICE)
     target_include_directories(ssl INTERFACE ./libressl/include)
     target_compile_definitions(ssl PRIVATE -DHAVE_INET_NTOP)
 
+    # JSON
+    add_library(json-headers INTERFACE)
+    target_include_directories(json-headers INTERFACE ./json)
+
     # lurlparser
     add_subdirectory(lurlparser EXCLUDE_FROM_ALL)
 
@@ -89,9 +93,9 @@ if (ENABLE_WEB_SERVICE)
     add_library(httplib INTERFACE)
     target_include_directories(httplib INTERFACE ./httplib)
 
-    # JSON
+    # cpp-jwt
-    add_library(json-headers INTERFACE)
+    add_library(cpp-jwt INTERFACE)
-    target_include_directories(json-headers INTERFACE ./json)
+    target_include_directories(cpp-jwt INTERFACE ./cpp-jwt/include)
 endif()
 
 if (ENABLE_SCRIPTING)

externals/cpp-jwt

@@ -0,0 +1 @@
+Subproject commit 6e27aa4c8671e183f11e327a2e1f556c64fdc4a9

license.txt

@@ -345,6 +345,7 @@ Icon Name                          | License       | Origin/Author
 ---                                | ---           | ---
 checked.png                        | Free for non-commercial use
 connected.png                      | CC BY-ND 3.0  | https://icons8.com
+connected_notification.png         | CC BY-ND 3.0  | https://icons8.com
 disconnected.png                   | CC BY-ND 3.0  | https://icons8.com
 failed.png                         | Free for non-commercial use
 lock.png                           | CC BY-ND 3.0  | https://icons8.com

src/citra/citra.cpp

@@ -39,6 +39,7 @@
 #include "core/frontend/applets/default_applets.h"
 #include "core/gdbstub/gdbstub.h"
 #include "core/hle/service/am/am.h"
+#include "core/hle/service/cfg/cfg.h"
 #include "core/loader/loader.h"
 #include "core/movie.h"
 #include "core/settings.h"
@@ -80,42 +81,87 @@ static void OnStateChanged(const Network::RoomMember::State& state) {
     case Network::RoomMember::State::Joined:
         LOG_DEBUG(Network, "Successfully joined to the room");
         break;
-    case Network::RoomMember::State::LostConnection:
+    case Network::RoomMember::State::Moderator:
-        LOG_DEBUG(Network, "Lost connection to the room");
+        LOG_DEBUG(Network, "Successfully joined the room as a moderator");
-        break;
-    case Network::RoomMember::State::CouldNotConnect:
-        LOG_ERROR(Network, "State: CouldNotConnect");
-        exit(1);
-        break;
-    case Network::RoomMember::State::NameCollision:
-        LOG_ERROR(
-            Network,
-            "You tried to use the same nickname as another user that is connected to the Room");
-        exit(1);
-        break;
-    case Network::RoomMember::State::MacCollision:
-        LOG_ERROR(Network, "You tried to use the same MAC-Address as another user that is "
-                           "connected to the Room");
-        exit(1);
-        break;
-    case Network::RoomMember::State::WrongPassword:
-        LOG_ERROR(Network, "Room replied with: Wrong password");
-        exit(1);
-        break;
-    case Network::RoomMember::State::WrongVersion:
-        LOG_ERROR(Network,
-                  "You are using a different version than the room you are trying to connect to");
-        exit(1);
         break;
     default:
         break;
     }
 }
 
+static void OnNetworkError(const Network::RoomMember::Error& error) {
+    switch (error) {
+    case Network::RoomMember::Error::LostConnection:
+        LOG_DEBUG(Network, "Lost connection to the room");
+        break;
+    case Network::RoomMember::Error::CouldNotConnect:
+        LOG_ERROR(Network, "Error: Could not connect");
+        exit(1);
+        break;
+    case Network::RoomMember::Error::NameCollision:
+        LOG_ERROR(
+            Network,
+            "You tried to use the same nickname as another user that is connected to the Room");
+        exit(1);
+        break;
+    case Network::RoomMember::Error::MacCollision:
+        LOG_ERROR(Network, "You tried to use the same MAC-Address as another user that is "
+                           "connected to the Room");
+        exit(1);
+        break;
+    case Network::RoomMember::Error::ConsoleIdCollision:
+        LOG_ERROR(Network, "Your Console ID conflicted with someone else in the Room");
+        exit(1);
+        break;
+    case Network::RoomMember::Error::WrongPassword:
+        LOG_ERROR(Network, "Room replied with: Wrong password");
+        exit(1);
+        break;
+    case Network::RoomMember::Error::WrongVersion:
+        LOG_ERROR(Network,
+                  "You are using a different version than the room you are trying to connect to");
+        exit(1);
+        break;
+    case Network::RoomMember::Error::RoomIsFull:
+        LOG_ERROR(Network, "The room is full");
+        exit(1);
+        break;
+    case Network::RoomMember::Error::HostKicked:
+        LOG_ERROR(Network, "You have been kicked by the host");
+        break;
+    case Network::RoomMember::Error::HostBanned:
+        LOG_ERROR(Network, "You have been banned by the host");
+        break;
+    }
+}
+
 static void OnMessageReceived(const Network::ChatEntry& msg) {
     std::cout << std::endl << msg.nickname << ": " << msg.message << std::endl << std::endl;
 }
 
+static void OnStatusMessageReceived(const Network::StatusMessageEntry& msg) {
+    std::string message;
+    switch (msg.type) {
+    case Network::IdMemberJoin:
+        message = fmt::format("{} has joined", msg.nickname);
+        break;
+    case Network::IdMemberLeave:
+        message = fmt::format("{} has left", msg.nickname);
+        break;
+    case Network::IdMemberKicked:
+        message = fmt::format("{} has been kicked", msg.nickname);
+        break;
+    case Network::IdMemberBanned:
+        message = fmt::format("{} has been banned", msg.nickname);
+        break;
+    case Network::IdAddressUnbanned:
+        message = fmt::format("{} has been unbanned", msg.nickname);
+        break;
+    }
+    if (!message.empty())
+        std::cout << std::endl << "* " << message << std::endl << std::endl;
+}
+
 static void InitializeLogging() {
     Log::Filter log_filter(Log::Level::Debug);
     log_filter.ParseFilterString(Settings::values.log_filter);
@@ -333,10 +379,13 @@ int main(int argc, char** argv) {
     if (use_multiplayer) {
         if (auto member = Network::GetRoomMember().lock()) {
             member->BindOnChatMessageRecieved(OnMessageReceived);
+            member->BindOnStatusMessageReceived(OnStatusMessageReceived);
             member->BindOnStateChanged(OnStateChanged);
+            member->BindOnError(OnNetworkError);
             LOG_DEBUG(Network, "Start connection to {}:{} with nickname {}", address, port,
                       nickname);
-            member->Join(nickname, address.c_str(), port, 0, Network::NoPreferredMac, password);
+            member->Join(nickname, Service::CFG::GetConsoleIdHash(system), address.c_str(), port, 0,
+                         Network::NoPreferredMac, password);
         } else {
             LOG_ERROR(Network, "Could not access RoomMember");
             return 0;

src/citra_qt/CMakeLists.txt

@@ -99,6 +99,8 @@ add_executable(citra-qt
     multiplayer/lobby.cpp
     multiplayer/message.h
     multiplayer/message.cpp
+    multiplayer/moderation_dialog.cpp
+    multiplayer/moderation_dialog.h
     multiplayer/state.cpp
     multiplayer/state.h
     multiplayer/validation.h
@@ -135,6 +137,7 @@ set(UIS
     multiplayer/chat_room.ui
     multiplayer/client_room.ui
     multiplayer/host_room.ui
+    multiplayer/moderation_dialog.ui
     aboutdialog.ui
     cheats.ui
     hotkeys.ui
@@ -228,6 +231,10 @@ if (USE_DISCORD_PRESENCE)
     target_compile_definitions(citra-qt PRIVATE -DUSE_DISCORD_PRESENCE)
 endif()
 
+if (ENABLE_WEB_SERVICE)
+    target_compile_definitions(citra-qt PRIVATE -DENABLE_WEB_SERVICE)
+endif()
+
 if(UNIX AND NOT APPLE)
     install(TARGETS citra-qt RUNTIME DESTINATION "${CMAKE_INSTALL_PREFIX}/bin")
 endif()

src/citra_qt/configuration/config.cpp

@@ -329,6 +329,22 @@ void Config::ReadValues() {
     }
     UISettings::values.max_player = ReadSetting("max_player", 8).toUInt();
     UISettings::values.game_id = ReadSetting("game_id", 0).toULongLong();
+    UISettings::values.room_description = ReadSetting("room_description", "").toString();
+    // Read ban list back
+    size = qt_config->beginReadArray("username_ban_list");
+    UISettings::values.ban_list.first.resize(size);
+    for (int i = 0; i < size; ++i) {
+        qt_config->setArrayIndex(i);
+        UISettings::values.ban_list.first[i] = ReadSetting("username").toString().toStdString();
+    }
+    qt_config->endArray();
+    size = qt_config->beginReadArray("ip_ban_list");
+    UISettings::values.ban_list.second.resize(size);
+    for (int i = 0; i < size; ++i) {
+        qt_config->setArrayIndex(i);
+        UISettings::values.ban_list.second[i] = ReadSetting("ip").toString().toStdString();
+    }
+    qt_config->endArray();
     qt_config->endGroup();
 
     qt_config->endGroup();
@@ -533,6 +549,20 @@ void Config::SaveValues() {
     WriteSetting("host_type", UISettings::values.host_type, 0);
     WriteSetting("max_player", UISettings::values.max_player, 8);
     WriteSetting("game_id", UISettings::values.game_id, 0);
+    WriteSetting("room_description", UISettings::values.room_description, "");
+    // Write ban list
+    qt_config->beginWriteArray("username_ban_list");
+    for (std::size_t i = 0; i < UISettings::values.ban_list.first.size(); ++i) {
+        qt_config->setArrayIndex(i);
+        WriteSetting("username", QString::fromStdString(UISettings::values.ban_list.first[i]));
+    }
+    qt_config->endArray();
+    qt_config->beginWriteArray("ip_ban_list");
+    for (std::size_t i = 0; i < UISettings::values.ban_list.second.size(); ++i) {
+        qt_config->setArrayIndex(i);
+        WriteSetting("ip", QString::fromStdString(UISettings::values.ban_list.second[i]));
+    }
+    qt_config->endArray();
     qt_config->endGroup();
 
     qt_config->endGroup();

src/citra_qt/multiplayer/chat_room.cpp

@@ -5,6 +5,8 @@
 #include <array>
 #include <future>
 #include <QColor>
+#include <QDesktopServices>
+#include <QFutureWatcher>
 #include <QImage>
 #include <QList>
 #include <QLocale>
@@ -12,6 +14,7 @@
 #include <QMessageBox>
 #include <QMetaType>
 #include <QTime>
+#include <QUrl>
 #include <QtConcurrent/QtConcurrentRun>
 #include "citra_qt/game_list_p.h"
 #include "citra_qt/multiplayer/chat_room.h"
@@ -19,6 +22,9 @@
 #include "common/logging/log.h"
 #include "core/announce_multiplayer_session.h"
 #include "ui_chat_room.h"
+#ifdef ENABLE_WEB_SERVICE
+#include "web_service/web_backend.h"
+#endif
 
 class ChatMessage {
 public:
@@ -27,24 +33,60 @@ public:
         QLocale locale;
         timestamp = locale.toString(ts.isValid() ? ts : QTime::currentTime(), QLocale::ShortFormat);
         nickname = QString::fromStdString(chat.nickname);
+        username = QString::fromStdString(chat.username);
         message = QString::fromStdString(chat.message);
+
+        // Check for user pings
+        QString cur_nickname, cur_username;
+        if (auto room = Network::GetRoomMember().lock()) {
+            cur_nickname = QString::fromStdString(room->GetNickname());
+            cur_username = QString::fromStdString(room->GetUsername());
+        }
+        if (message.contains(QString("@").append(cur_nickname)) ||
+            (!cur_username.isEmpty() && message.contains(QString("@").append(cur_username)))) {
+
+            contains_ping = true;
+        } else {
+            contains_ping = false;
+        }
+    }
+
+    bool ContainsPing() const {
+        return contains_ping;
     }
 
     /// Format the message using the players color
     QString GetPlayerChatMessage(u16 player) const {
         auto color = player_color[player % 16];
-        return QString("[%1] <font color='%2'>&lt;%3&gt;</font> %4")
+        QString name;
-            .arg(timestamp, color, nickname.toHtmlEscaped(), message.toHtmlEscaped());
+        if (username.isEmpty() || username == nickname) {
+            name = nickname;
+        } else {
+            name = QString("%1 (%2)").arg(nickname, username);
+        }
+
+        QString style;
+        if (ContainsPing()) {
+            // Add a background color to these messages
+            style = QString("background-color: %1").arg(ping_color);
+        }
+
+        return QString("[%1] <font color='%2'>&lt;%3&gt;</font> <font style='%4' "
+                       "color='#000000'>%5</font>")
+            .arg(timestamp, color, name.toHtmlEscaped(), style, message.toHtmlEscaped());
     }
 
 private:
     static constexpr std::array<const char*, 16> player_color = {
         {"#0000FF", "#FF0000", "#8A2BE2", "#FF69B4", "#1E90FF", "#008000", "#00FF7F", "#B22222",
          "#DAA520", "#FF4500", "#2E8B57", "#5F9EA0", "#D2691E", "#9ACD32", "#FF7F50", "FFFF00"}};
+    static constexpr char ping_color[] = "#FFFF00";
 
     QString timestamp;
     QString nickname;
+    QString username;
     QString message;
+    bool contains_ping;
 };
 
 class StatusMessage {
@@ -57,37 +99,69 @@ public:
     }
 
     QString GetSystemChatMessage() const {
-        return QString("[%1] <font color='%2'><i>%3</i></font>")
+        return QString("[%1] <font color='%2'>* %3</font>").arg(timestamp, system_color, message);
-            .arg(timestamp, system_color, message);
     }
 
 private:
-    static constexpr const char system_color[] = "#888888";
+    static constexpr const char system_color[] = "#FF8C00";
     QString timestamp;
     QString message;
 };
 
+class PlayerListItem : public QStandardItem {
+public:
+    static const int NicknameRole = Qt::UserRole + 1;
+    static const int UsernameRole = Qt::UserRole + 2;
+    static const int AvatarUrlRole = Qt::UserRole + 3;
+    static const int GameNameRole = Qt::UserRole + 4;
+
+    PlayerListItem() = default;
+    explicit PlayerListItem(const std::string& nickname, const std::string& username,
+                            const std::string& avatar_url, const std::string& game_name) {
+        setEditable(false);
+        setData(QString::fromStdString(nickname), NicknameRole);
+        setData(QString::fromStdString(username), UsernameRole);
+        setData(QString::fromStdString(avatar_url), AvatarUrlRole);
+        if (game_name.empty()) {
+            setData(QObject::tr("Not playing a game"), GameNameRole);
+        } else {
+            setData(QString::fromStdString(game_name), GameNameRole);
+        }
+    }
+
+    QVariant data(int role) const override {
+        if (role != Qt::DisplayRole) {
+            return QStandardItem::data(role);
+        }
+        QString name;
+        const QString nickname = data(NicknameRole).toString();
+        const QString username = data(UsernameRole).toString();
+        if (username.isEmpty() || username == nickname) {
+            name = nickname;
+        } else {
+            name = QString("%1 (%2)").arg(nickname, username);
+        }
+        return QString("%1\n      %2").arg(name, data(GameNameRole).toString());
+    }
+};
+
 ChatRoom::ChatRoom(QWidget* parent) : QWidget(parent), ui(std::make_unique<Ui::ChatRoom>()) {
     ui->setupUi(this);
 
     // set the item_model for player_view
-    enum {
-        COLUMN_NAME,
-        COLUMN_GAME,
-        COLUMN_COUNT, // Number of columns
-    };
 
     player_list = new QStandardItemModel(ui->player_view);
     ui->player_view->setModel(player_list);
     ui->player_view->setContextMenuPolicy(Qt::CustomContextMenu);
-    player_list->insertColumns(0, COLUMN_COUNT);
+    // set a header to make it look better though there is only one column
-    player_list->setHeaderData(COLUMN_NAME, Qt::Horizontal, tr("Name"));
+    player_list->insertColumns(0, 1);
-    player_list->setHeaderData(COLUMN_GAME, Qt::Horizontal, tr("Game"));
+    player_list->setHeaderData(0, Qt::Horizontal, tr("Members"));
 
     ui->chat_history->document()->setMaximumBlockCount(max_chat_lines);
 
     // register the network structs to use in slots and signals
     qRegisterMetaType<Network::ChatEntry>();
+    qRegisterMetaType<Network::StatusMessageEntry>();
     qRegisterMetaType<Network::RoomInformation>();
     qRegisterMetaType<Network::RoomMember::State>();
 
@@ -95,7 +169,12 @@ ChatRoom::ChatRoom(QWidget* parent) : QWidget(parent), ui(std::make_unique<Ui::C
     if (auto member = Network::GetRoomMember().lock()) {
         member->BindOnChatMessageRecieved(
             [this](const Network::ChatEntry& chat) { emit ChatReceived(chat); });
+        member->BindOnStatusMessageReceived(
+            [this](const Network::StatusMessageEntry& status_message) {
+                emit StatusMessageReceived(status_message);
+            });
         connect(this, &ChatRoom::ChatReceived, this, &ChatRoom::OnChatReceive);
+        connect(this, &ChatRoom::StatusMessageReceived, this, &ChatRoom::OnStatusMessageReceive);
     } else {
         // TODO (jroweboy) network was not initialized?
     }
@@ -110,6 +189,10 @@ ChatRoom::ChatRoom(QWidget* parent) : QWidget(parent), ui(std::make_unique<Ui::C
 
 ChatRoom::~ChatRoom() = default;
 
+void ChatRoom::SetModPerms(bool is_mod) {
+    has_mod_perms = is_mod;
+}
+
 void ChatRoom::RetranslateUi() {
     ui->retranslateUi(this);
 }
@@ -127,6 +210,21 @@ void ChatRoom::AppendChatMessage(const QString& msg) {
     ui->chat_history->append(msg);
 }
 
+void ChatRoom::SendModerationRequest(Network::RoomMessageTypes type, const std::string& nickname) {
+    if (auto room = Network::GetRoomMember().lock()) {
+        auto members = room->GetMemberInformation();
+        auto it = std::find_if(members.begin(), members.end(),
+                               [&nickname](const Network::RoomMember::MemberInformation& member) {
+                                   return member.nickname == nickname;
+                               });
+        if (it == members.end()) {
+            NetworkMessage::ShowError(NetworkMessage::NO_SUCH_USER);
+            return;
+        }
+        room->SendModerationRequest(type, nickname);
+    }
+}
+
 bool ChatRoom::ValidateMessage(const std::string& msg) {
     return !msg.empty();
 }
@@ -157,7 +255,8 @@ void ChatRoom::OnChatReceive(const Network::ChatEntry& chat) {
         auto members = room->GetMemberInformation();
         auto it = std::find_if(members.begin(), members.end(),
                                [&chat](const Network::RoomMember::MemberInformation& member) {
-                                   return member.nickname == chat.nickname;
+                                   return member.nickname == chat.nickname &&
+                                          member.username == chat.username;
                                });
         if (it == members.end()) {
             LOG_INFO(Network, "Chat message received from unknown player. Ignoring it.");
@@ -170,13 +269,48 @@ void ChatRoom::OnChatReceive(const Network::ChatEntry& chat) {
         }
         auto player = std::distance(members.begin(), it);
         ChatMessage m(chat);
+        if (m.ContainsPing()) {
+            emit UserPinged();
+        }
         AppendChatMessage(m.GetPlayerChatMessage(player));
     }
 }
 
+void ChatRoom::OnStatusMessageReceive(const Network::StatusMessageEntry& status_message) {
+    QString name;
+    if (status_message.username.empty() || status_message.username == status_message.nickname) {
+        name = QString::fromStdString(status_message.nickname);
+    } else {
+        name = QString("%1 (%2)").arg(QString::fromStdString(status_message.nickname),
+                                      QString::fromStdString(status_message.username));
+    }
+    QString message;
+    switch (status_message.type) {
+    case Network::IdMemberJoin:
+        message = tr("%1 has joined").arg(name);
+        break;
+    case Network::IdMemberLeave:
+        message = tr("%1 has left").arg(name);
+        break;
+    case Network::IdMemberKicked:
+        message = tr("%1 has been kicked").arg(name);
+        break;
+    case Network::IdMemberBanned:
+        message = tr("%1 has been banned").arg(name);
+        break;
+    case Network::IdAddressUnbanned:
+        message = tr("%1 has been unbanned").arg(name);
+        break;
+    }
+    if (!message.isEmpty())
+        AppendStatusMessage(message);
+}
+
 void ChatRoom::OnSendChat() {
     if (auto room = Network::GetRoomMember().lock()) {
-        if (room->GetState() != Network::RoomMember::State::Joined) {
+        if (room->GetState() != Network::RoomMember::State::Joined &&
+            room->GetState() != Network::RoomMember::State::Moderator) {
+
             return;
         }
         auto message = ui->chat_message->text().toStdString();
@@ -184,12 +318,14 @@ void ChatRoom::OnSendChat() {
             return;
         }
         auto nick = room->GetNickname();
-        Network::ChatEntry chat{nick, message};
+        auto username = room->GetUsername();
+        Network::ChatEntry chat{nick, username, message};
 
         auto members = room->GetMemberInformation();
         auto it = std::find_if(members.begin(), members.end(),
                                [&chat](const Network::RoomMember::MemberInformation& member) {
-                                   return member.nickname == chat.nickname;
+                                   return member.nickname == chat.nickname &&
+                                          member.username == chat.username;
                                });
         if (it == members.end()) {
             LOG_INFO(Network, "Cannot find self in the player list when sending a message.");
@@ -202,20 +338,64 @@ void ChatRoom::OnSendChat() {
     }
 }
 
+void ChatRoom::UpdateIconDisplay() {
+    for (int row = 0; row < player_list->invisibleRootItem()->rowCount(); ++row) {
+        QStandardItem* item = player_list->invisibleRootItem()->child(row);
+        const std::string avatar_url =
+            item->data(PlayerListItem::AvatarUrlRole).toString().toStdString();
+        if (icon_cache.count(avatar_url)) {
+            item->setData(icon_cache.at(avatar_url), Qt::DecorationRole);
+        }
+    }
+}
+
 void ChatRoom::SetPlayerList(const Network::RoomMember::MemberList& member_list) {
     // TODO(B3N30): Remember which row is selected
     player_list->removeRows(0, player_list->rowCount());
     for (const auto& member : member_list) {
         if (member.nickname.empty())
             continue;
-        QList<QStandardItem*> l;
+        QStandardItem* name_item = new PlayerListItem(member.nickname, member.username,
-        std::vector<std::string> elements = {member.nickname, member.game_info.name};
+                                                      member.avatar_url, member.game_info.name);
-        for (const auto& item : elements) {
+
-            QStandardItem* child = new QStandardItem(QString::fromStdString(item));
+        if (!icon_cache.count(member.avatar_url)) {
-            child->setEditable(false);
+            // Emplace a default question mark icon as avatar
-            l.append(child);
+            icon_cache.emplace(member.avatar_url, QIcon::fromTheme("no_avatar").pixmap(48));
+            if (!member.avatar_url.empty()) {
+#ifdef ENABLE_WEB_SERVICE
+                // Start a request to get the member's avatar
+                const QUrl url(QString::fromStdString(member.avatar_url));
+                QFuture<std::string> future = QtConcurrent::run([url] {
+                    WebService::Client client(
+                        QString("%1://%2").arg(url.scheme(), url.host()).toStdString(), "", "");
+                    auto result = client.GetImage(url.path().toStdString(), true);
+                    if (result.returned_data.empty()) {
+                        LOG_ERROR(WebService, "Failed to get avatar");
+                    }
+                    return result.returned_data;
+                });
+                auto* future_watcher = new QFutureWatcher<std::string>(this);
+                connect(future_watcher, &QFutureWatcher<std::string>::finished, this,
+                        [this, future_watcher, avatar_url = member.avatar_url] {
+                            const std::string result = future_watcher->result();
+                            if (result.empty())
+                                return;
+                            QPixmap pixmap;
+                            if (!pixmap.loadFromData(reinterpret_cast<const u8*>(result.data()),
+                                                     result.size()))
+                                return;
+                            icon_cache[avatar_url] = pixmap.scaled(48, 48, Qt::IgnoreAspectRatio,
+                                                                   Qt::SmoothTransformation);
+                            // Update all the displayed icons with the new icon_cache
+                            UpdateIconDisplay();
+                        });
+                future_watcher->setFuture(future);
+#endif
+            }
         }
-        player_list->invisibleRootItem()->appendRow(l);
+        name_item->setData(icon_cache.at(member.avatar_url), Qt::DecorationRole);
+
+        player_list->invisibleRootItem()->appendRow(name_item);
     }
     // TODO(B3N30): Restore row selection
 }
@@ -230,33 +410,73 @@ void ChatRoom::PopupContextMenu(const QPoint& menu_location) {
     if (!item.isValid())
         return;
 
-    std::string nickname = player_list->item(item.row())->text().toStdString();
+    std::string nickname =
-    if (auto room = Network::GetRoomMember().lock()) {
+        player_list->item(item.row())->data(PlayerListItem::NicknameRole).toString().toStdString();
-        // You can't block yourself
-        if (nickname == room->GetNickname())
-            return;
-    }
 
     QMenu context_menu;
-    QAction* block_action = context_menu.addAction(tr("Block Player"));
 
-    block_action->setCheckable(true);
+    QString username = player_list->item(item.row())->data(PlayerListItem::UsernameRole).toString();
-    block_action->setChecked(block_list.count(nickname) > 0);
+    if (!username.isEmpty()) {
+        QAction* view_profile_action = context_menu.addAction(tr("View Profile"));
+        connect(view_profile_action, &QAction::triggered, [username] {
+            QDesktopServices::openUrl(
+                QString("https://community.citra-emu.org/u/%1").arg(username));
+        });
+    }
 
-    connect(block_action, &QAction::triggered, [this, nickname] {
+    std::string cur_nickname;
-        if (block_list.count(nickname)) {
+    if (auto room = Network::GetRoomMember().lock()) {
-            block_list.erase(nickname);
+        cur_nickname = room->GetNickname();
-        } else {
+    }
+
+    if (nickname != cur_nickname) { // You can't block yourself
+        QAction* block_action = context_menu.addAction(tr("Block Player"));
+
+        block_action->setCheckable(true);
+        block_action->setChecked(block_list.count(nickname) > 0);
+
+        connect(block_action, &QAction::triggered, [this, nickname] {
+            if (block_list.count(nickname)) {
+                block_list.erase(nickname);
+            } else {
+                QMessageBox::StandardButton result = QMessageBox::question(
+                    this, tr("Block Player"),
+                    tr("When you block a player, you will no longer receive chat messages from "
+                       "them.<br><br>Are you sure you would like to block %1?")
+                        .arg(QString::fromStdString(nickname)),
+                    QMessageBox::Yes | QMessageBox::No);
+                if (result == QMessageBox::Yes)
+                    block_list.emplace(nickname);
+            }
+        });
+    }
+
+    if (has_mod_perms && nickname != cur_nickname) { // You can't kick or ban yourself
+        context_menu.addSeparator();
+
+        QAction* kick_action = context_menu.addAction(tr("Kick"));
+        QAction* ban_action = context_menu.addAction(tr("Ban"));
+
+        connect(kick_action, &QAction::triggered, [this, nickname] {
+            QMessageBox::StandardButton result =
+                QMessageBox::question(this, tr("Kick Player"),
+                                      tr("Are you sure you would like to <b>kick</b> %1?")
+                                          .arg(QString::fromStdString(nickname)),
+                                      QMessageBox::Yes | QMessageBox::No);
+            if (result == QMessageBox::Yes)
+                SendModerationRequest(Network::IdModKick, nickname);
+        });
+        connect(ban_action, &QAction::triggered, [this, nickname] {
             QMessageBox::StandardButton result = QMessageBox::question(
-                this, tr("Block Player"),
+                this, tr("Ban Player"),
-                tr("When you block a player, you will no longer receive chat messages from "
+                tr("Are you sure you would like to <b>kick and ban</b> %1?\n\nThis would "
-                   "them.<br><br>Are you sure you would like to block %1?")
+                   "ban both their forum username and their IP address.")
                     .arg(QString::fromStdString(nickname)),
                 QMessageBox::Yes | QMessageBox::No);
             if (result == QMessageBox::Yes)
-                block_list.emplace(nickname);
+                SendModerationRequest(Network::IdModBan, nickname);
-        }
+        });
-    });
+    }
 
     context_menu.exec(ui->player_view->viewport()->mapToGlobal(menu_location));
 }

src/citra_qt/multiplayer/chat_room.h

@@ -36,9 +36,12 @@ public:
     void AppendStatusMessage(const QString& msg);
     ~ChatRoom();
 
+    void SetModPerms(bool is_mod);
+
 public slots:
     void OnRoomUpdate(const Network::RoomInformation& info);
     void OnChatReceive(const Network::ChatEntry&);
+    void OnStatusMessageReceive(const Network::StatusMessageEntry&);
     void OnSendChat();
     void OnChatTextChanged();
     void PopupContextMenu(const QPoint& menu_location);
@@ -47,16 +50,25 @@ public slots:
 
 signals:
     void ChatReceived(const Network::ChatEntry&);
+    void StatusMessageReceived(const Network::StatusMessageEntry&);
+    void UserPinged();
 
 private:
     static constexpr u32 max_chat_lines = 1000;
     void AppendChatMessage(const QString&);
     bool ValidateMessage(const std::string&);
+    void SendModerationRequest(Network::RoomMessageTypes type, const std::string& nickname);
+    void UpdateIconDisplay();
+
+    bool has_mod_perms = false;
     QStandardItemModel* player_list;
     std::unique_ptr<Ui::ChatRoom> ui;
     std::unordered_set<std::string> block_list;
+    std::unordered_map<std::string, QPixmap> icon_cache;
 };
 
 Q_DECLARE_METATYPE(Network::ChatEntry);
+Q_DECLARE_METATYPE(Network::StatusMessageEntry);
 Q_DECLARE_METATYPE(Network::RoomInformation);
 Q_DECLARE_METATYPE(Network::RoomMember::State);
+Q_DECLARE_METATYPE(Network::RoomMember::Error);

src/citra_qt/multiplayer/chat_room.ui

@@ -6,7 +6,7 @@
    <rect>
     <x>0</x>
     <y>0</y>
-    <width>607</width>
+    <width>807</width>
     <height>432</height>
    </rect>
   </property>

src/citra_qt/multiplayer/client_room.cpp

@@ -13,6 +13,7 @@
 #include "citra_qt/game_list_p.h"
 #include "citra_qt/multiplayer/client_room.h"
 #include "citra_qt/multiplayer/message.h"
+#include "citra_qt/multiplayer/moderation_dialog.h"
 #include "citra_qt/multiplayer/state.h"
 #include "common/logging/log.h"
 #include "core/announce_multiplayer_session.h"
@@ -33,6 +34,8 @@ ClientRoomWindow::ClientRoomWindow(QWidget* parent)
         connect(this, &ClientRoomWindow::RoomInformationChanged, this,
                 &ClientRoomWindow::OnRoomUpdate);
         connect(this, &ClientRoomWindow::StateChanged, this, &::ClientRoomWindow::OnStateChange);
+        // Update the state
+        OnStateChange(member->GetState());
     } else {
         // TODO (jroweboy) network was not initialized?
     }
@@ -40,11 +43,25 @@ ClientRoomWindow::ClientRoomWindow(QWidget* parent)
     connect(ui->disconnect, &QPushButton::pressed, [this] { Disconnect(); });
     ui->disconnect->setDefault(false);
     ui->disconnect->setAutoDefault(false);
+    connect(ui->moderation, &QPushButton::clicked, [this] {
+        ModerationDialog dialog(this);
+        dialog.exec();
+    });
+    ui->moderation->setDefault(false);
+    ui->moderation->setAutoDefault(false);
+    connect(ui->chat, &ChatRoom::UserPinged, this, &ClientRoomWindow::ShowNotification);
     UpdateView();
 }
 
 ClientRoomWindow::~ClientRoomWindow() = default;
 
+void ClientRoomWindow::SetModPerms(bool is_mod) {
+    ui->chat->SetModPerms(is_mod);
+    ui->moderation->setVisible(is_mod);
+    ui->moderation->setDefault(false);
+    ui->moderation->setAutoDefault(false);
+}
+
 void ClientRoomWindow::RetranslateUi() {
     ui->retranslateUi(this);
     ui->chat->RetranslateUi();
@@ -55,9 +72,12 @@ void ClientRoomWindow::OnRoomUpdate(const Network::RoomInformation& info) {
 }
 
 void ClientRoomWindow::OnStateChange(const Network::RoomMember::State& state) {
-    if (state == Network::RoomMember::State::Joined) {
+    if (state == Network::RoomMember::State::Joined ||
+        state == Network::RoomMember::State::Moderator) {
+
         ui->chat->Clear();
         ui->chat->AppendStatusMessage(tr("Connected"));
+        SetModPerms(state == Network::RoomMember::State::Moderator);
     }
     UpdateView();
 }
@@ -82,6 +102,7 @@ void ClientRoomWindow::UpdateView() {
                                .arg(QString::fromStdString(information.name))
                                .arg(memberlist.size())
                                .arg(information.member_slots));
+            ui->description->setText(QString::fromStdString(information.description));
             return;
         }
     }

src/citra_qt/multiplayer/client_room.h

@@ -26,10 +26,12 @@ public slots:
 signals:
     void RoomInformationChanged(const Network::RoomInformation&);
     void StateChanged(const Network::RoomMember::State&);
+    void ShowNotification();
 
 private:
     void Disconnect();
     void UpdateView();
+    void SetModPerms(bool is_mod);
 
     QStandardItemModel* player_list;
     std::unique_ptr<Ui::ClientRoom> ui;

src/citra_qt/multiplayer/client_room.ui

@@ -6,7 +6,7 @@
    <rect>
     <x>0</x>
     <y>0</y>
-    <width>607</width>
+    <width>807</width>
     <height>432</height>
    </rect>
   </property>
@@ -21,6 +21,13 @@
        <property name="rightMargin">
         <number>0</number>
        </property>
+       <item>
+        <widget class="QLabel" name="description">
+         <property name="text">
+          <string>Room Description</string>
+         </property>
+        </widget>
+       </item>
        <item>
         <spacer name="horizontalSpacer">
          <property name="orientation">
@@ -34,6 +41,16 @@
          </property>
         </spacer>
        </item>
+       <item>
+        <widget class="QPushButton" name="moderation">
+         <property name="text">
+          <string>Moderation...</string>
+         </property>
+         <property name="visible">
+          <bool>false</bool>
+         </property>
+        </widget>
+       </item>
        <item>
         <widget class="QPushButton" name="disconnect">
          <property name="text">

src/citra_qt/multiplayer/direct_connect.cpp

@@ -15,6 +15,7 @@
 #include "citra_qt/multiplayer/state.h"
 #include "citra_qt/multiplayer/validation.h"
 #include "citra_qt/ui_settings.h"
+#include "core/hle/service/cfg/cfg.h"
 #include "core/settings.h"
 #include "network/network.h"
 #include "ui_direct_connect.h"
@@ -62,7 +63,7 @@ void DirectConnectWindow::Connect() {
         // Prevent the user from trying to join a room while they are already joining.
         if (member->GetState() == Network::RoomMember::State::Joining) {
             return;
-        } else if (member->GetState() == Network::RoomMember::State::Joined) {
+        } else if (member->IsConnected()) {
             // And ask if they want to leave the room if they are already in one.
             if (!NetworkMessage::WarnDisconnect()) {
                 return;
@@ -97,6 +98,7 @@ void DirectConnectWindow::Connect() {
         if (auto room_member = Network::GetRoomMember().lock()) {
             auto port = UISettings::values.port.toUInt();
             room_member->Join(ui->nickname->text().toStdString(),
+                              Service::CFG::GetConsoleIdHash(Core::System::GetInstance()),
                               ui->ip->text().toStdString().c_str(), port, 0,
                               Network::NoPreferredMac, ui->password->text().toStdString().c_str());
         }
@@ -120,7 +122,9 @@ void DirectConnectWindow::OnConnection() {
     EndConnecting();
 
     if (auto room_member = Network::GetRoomMember().lock()) {
-        if (room_member->GetState() == Network::RoomMember::State::Joined) {
+        if (room_member->GetState() == Network::RoomMember::State::Joined ||
+            room_member->GetState() == Network::RoomMember::State::Moderator) {
+
             close();
         }
     }

src/citra_qt/multiplayer/host_room.cpp

@@ -19,8 +19,12 @@
 #include "citra_qt/ui_settings.h"
 #include "common/logging/log.h"
 #include "core/announce_multiplayer_session.h"
+#include "core/hle/service/cfg/cfg.h"
 #include "core/settings.h"
 #include "ui_host_room.h"
+#ifdef ENABLE_WEB_SERVICE
+#include "web_service/verify_user_jwt.h"
+#endif
 
 HostRoomWindow::HostRoomWindow(QWidget* parent, QStandardItemModel* list,
                                std::shared_ptr<Core::AnnounceMultiplayerSession> session)
@@ -69,6 +73,7 @@ HostRoomWindow::HostRoomWindow(QWidget* parent, QStandardItemModel* list,
     if (index != -1) {
         ui->game_list->setCurrentIndex(index);
     }
+    ui->room_description->setText(UISettings::values.room_description);
 }
 
 HostRoomWindow::~HostRoomWindow() = default;
@@ -77,6 +82,21 @@ void HostRoomWindow::RetranslateUi() {
     ui->retranslateUi(this);
 }
 
+std::unique_ptr<Network::VerifyUser::Backend> HostRoomWindow::CreateVerifyBackend(
+    bool use_validation) const {
+    std::unique_ptr<Network::VerifyUser::Backend> verify_backend;
+    if (use_validation) {
+#ifdef ENABLE_WEB_SERVICE
+        verify_backend = std::make_unique<WebService::VerifyUserJWT>(Settings::values.web_api_url);
+#else
+        verify_backend = std::make_unique<Network::VerifyUser::NullBackend>();
+#endif
+    } else {
+        verify_backend = std::make_unique<Network::VerifyUser::NullBackend>();
+    }
+    return verify_backend;
+}
+
 void HostRoomWindow::Host() {
     if (!ui->username->hasAcceptableInput()) {
         NetworkMessage::ShowError(NetworkMessage::USERNAME_NOT_VALID);
@@ -93,7 +113,7 @@ void HostRoomWindow::Host() {
     if (auto member = Network::GetRoomMember().lock()) {
         if (member->GetState() == Network::RoomMember::State::Joining) {
             return;
-        } else if (member->GetState() == Network::RoomMember::State::Joined) {
+        } else if (member->IsConnected()) {
             auto parent = static_cast<MultiplayerState*>(parentWidget());
             if (!parent->OnCloseRoom()) {
                 close();
@@ -106,9 +126,17 @@ void HostRoomWindow::Host() {
         auto game_id = ui->game_list->currentData(GameListItemPath::ProgramIdRole).toLongLong();
         auto port = ui->port->isModified() ? ui->port->text().toInt() : Network::DefaultRoomPort;
         auto password = ui->password->text().toStdString();
+        const bool is_public = ui->host_type->currentIndex() == 0;
+        Network::Room::BanList ban_list{};
+        if (ui->load_ban_list->isChecked()) {
+            ban_list = UISettings::values.ban_list;
+        }
         if (auto room = Network::GetRoom().lock()) {
-            bool created = room->Create(ui->room_name->text().toStdString(), "", port, password,
+            bool created = room->Create(ui->room_name->text().toStdString(),
-                                        ui->max_player->value(), game_name.toStdString(), game_id);
+                                        ui->room_description->toPlainText().toStdString(), "", port,
+                                        password, ui->max_player->value(),
+                                        Settings::values.citra_username, game_name.toStdString(),
+                                        game_id, CreateVerifyBackend(is_public), ban_list);
             if (!created) {
                 NetworkMessage::ShowError(NetworkMessage::COULD_NOT_CREATE_ROOM);
                 LOG_ERROR(Network, "Could not create room!");
@@ -116,8 +144,34 @@ void HostRoomWindow::Host() {
                 return;
             }
         }
-        member->Join(ui->username->text().toStdString(), "127.0.0.1", port, 0,
+        // Start the announce session if they chose Public
-                     Network::NoPreferredMac, password);
+        if (is_public) {
+            if (auto session = announce_multiplayer_session.lock()) {
+                // Register the room first to ensure verify_UID is present when we connect
+                session->Register();
+                session->Start();
+            } else {
+                LOG_ERROR(Network, "Starting announce session failed");
+            }
+        }
+        std::string token;
+#ifdef ENABLE_WEB_SERVICE
+        if (is_public) {
+            WebService::Client client(Settings::values.web_api_url, Settings::values.citra_username,
+                                      Settings::values.citra_token);
+            if (auto room = Network::GetRoom().lock()) {
+                token = client.GetExternalJWT(room->GetVerifyUID()).returned_data;
+            }
+            if (token.empty()) {
+                LOG_ERROR(WebService, "Could not get external JWT, verification may fail");
+            } else {
+                LOG_INFO(WebService, "Successfully requested external JWT: size={}", token.size());
+            }
+        }
+#endif
+        member->Join(ui->username->text().toStdString(),
+                     Service::CFG::GetConsoleIdHash(Core::System::GetInstance()), "127.0.0.1", port,
+                     0, Network::NoPreferredMac, password, token);
 
         // Store settings
         UISettings::values.room_nickname = ui->username->text();
@@ -130,25 +184,10 @@ void HostRoomWindow::Host() {
         UISettings::values.room_port = (ui->port->isModified() && !ui->port->text().isEmpty())
                                            ? ui->port->text()
                                            : QString::number(Network::DefaultRoomPort);
+        UISettings::values.room_description = ui->room_description->toPlainText();
         Settings::Apply();
-        OnConnection();
+        ui->host->setEnabled(true);
-    }
+        close();
-}
-
-void HostRoomWindow::OnConnection() {
-    ui->host->setEnabled(true);
-    if (auto room_member = Network::GetRoomMember().lock()) {
-        if (room_member->GetState() == Network::RoomMember::State::Joining) {
-            // Start the announce session if they chose Public
-            if (ui->host_type->currentIndex() == 0) {
-                if (auto session = announce_multiplayer_session.lock()) {
-                    session->Start();
-                } else {
-                    LOG_ERROR(Network, "Starting announce session failed");
-                }
-            }
-            close();
-        }
     }
 }
 

src/citra_qt/multiplayer/host_room.h

@@ -26,6 +26,10 @@ class ComboBoxProxyModel;
 
 class ChatMessage;
 
+namespace Network::VerifyUser {
+class Backend;
+};
+
 class HostRoomWindow : public QDialog {
     Q_OBJECT
 
@@ -36,15 +40,9 @@ public:
 
     void RetranslateUi();
 
-private slots:
-    /**
-     * Handler for connection status changes. Launches the chat window if successful or
-     * displays an error
-     */
-    void OnConnection();
-
 private:
     void Host();
+    std::unique_ptr<Network::VerifyUser::Backend> CreateVerifyBackend(bool use_validation) const;
 
     std::weak_ptr<Core::AnnounceMultiplayerSession> announce_multiplayer_session;
     QStandardItemModel* game_list;

src/citra_qt/multiplayer/host_room.ui

@@ -7,7 +7,7 @@
     <x>0</x>
     <y>0</y>
     <width>607</width>
-    <height>165</height>
+    <height>211</height>
    </rect>
   </property>
   <property name="windowTitle">
@@ -131,6 +131,34 @@
      </layout>
     </widget>
    </item>
+   <item>
+    <layout class="QHBoxLayout" name="horizontalLayout_3">
+     <item>
+      <widget class="QLabel" name="label_7">
+       <property name="text">
+        <string>Room Description</string>
+       </property>
+      </widget>
+     </item>
+     <item>
+      <widget class="QTextEdit" name="room_description"/>
+     </item>
+    </layout>
+   </item>
+   <item>
+    <layout class="QHBoxLayout">
+     <item>
+      <widget class="QCheckBox" name="load_ban_list">
+       <property name="text">
+        <string>Load Previous Ban List</string>
+       </property>
+       <property name="checked">
+        <bool>true</bool>
+       </property>
+      </widget>
+     </item>
+    </layout>
+   </item>
    <item>
     <layout class="QHBoxLayout" name="horizontalLayout">
      <property name="rightMargin">

src/citra_qt/multiplayer/lobby.cpp

@@ -15,8 +15,12 @@
 #include "citra_qt/multiplayer/validation.h"
 #include "citra_qt/ui_settings.h"
 #include "common/logging/log.h"
+#include "core/hle/service/cfg/cfg.h"
 #include "core/settings.h"
 #include "network/network.h"
+#ifdef ENABLE_WEB_SERVICE
+#include "web_service/web_backend.h"
+#endif
 
 Lobby::Lobby(QWidget* parent, QStandardItemModel* list,
              std::shared_ptr<Core::AnnounceMultiplayerSession> session)
@@ -105,7 +109,7 @@ void Lobby::OnJoinRoom(const QModelIndex& source) {
         // Prevent the user from trying to join a room while they are already joining.
         if (member->GetState() == Network::RoomMember::State::Joining) {
             return;
-        } else if (member->GetState() == Network::RoomMember::State::Joined) {
+        } else if (member->IsConnected()) {
             // And ask if they want to leave the room if they are already in one.
             if (!NetworkMessage::WarnDisconnect()) {
                 return;
@@ -135,11 +139,27 @@ void Lobby::OnJoinRoom(const QModelIndex& source) {
     const std::string ip =
         proxy->data(connection_index, LobbyItemHost::HostIPRole).toString().toStdString();
     int port = proxy->data(connection_index, LobbyItemHost::HostPortRole).toInt();
+    const std::string verify_UID =
+        proxy->data(connection_index, LobbyItemHost::HostVerifyUIDRole).toString().toStdString();
 
     // attempt to connect in a different thread
-    QFuture<void> f = QtConcurrent::run([nickname, ip, port, password] {
+    QFuture<void> f = QtConcurrent::run([nickname, ip, port, password, verify_UID] {
+        std::string token;
+#ifdef ENABLE_WEB_SERVICE
+        if (!Settings::values.citra_username.empty() && !Settings::values.citra_token.empty()) {
+            WebService::Client client(Settings::values.web_api_url, Settings::values.citra_username,
+                                      Settings::values.citra_token);
+            token = client.GetExternalJWT(verify_UID).returned_data;
+            if (token.empty()) {
+                LOG_ERROR(WebService, "Could not get external JWT, verification may fail");
+            } else {
+                LOG_INFO(WebService, "Successfully requested external JWT: size={}", token.size());
+            }
+        }
+#endif
         if (auto room_member = Network::GetRoomMember().lock()) {
-            room_member->Join(nickname, ip.c_str(), port, 0, Network::NoPreferredMac, password);
+            room_member->Join(nickname, Service::CFG::GetConsoleIdHash(Core::System::GetInstance()),
+                              ip.c_str(), port, 0, Network::NoPreferredMac, password, token);
         }
     });
     watcher->setFuture(f);
@@ -191,7 +211,8 @@ void Lobby::OnRefreshLobby() {
         QList<QVariant> members;
         for (auto member : room.members) {
             QVariant var;
-            var.setValue(LobbyMember{QString::fromStdString(member.name), member.game_id,
+            var.setValue(LobbyMember{QString::fromStdString(member.username),
+                                     QString::fromStdString(member.nickname), member.game_id,
                                      QString::fromStdString(member.game_name)});
             members.append(var);
         }
@@ -203,14 +224,18 @@ void Lobby::OnRefreshLobby() {
             new LobbyItemGame(room.preferred_game_id, QString::fromStdString(room.preferred_game),
                               smdh_icon),
             new LobbyItemHost(QString::fromStdString(room.owner), QString::fromStdString(room.ip),
-                              room.port),
+                              room.port, QString::fromStdString(room.verify_UID)),
             new LobbyItemMemberList(members, room.max_player),
         });
         model->appendRow(row);
         // To make the rows expandable, add the member data as a child of the first column of the
         // rows with people in them and have qt set them to colspan after the model is finished
         // resetting
-        if (room.members.size() > 0) {
+        if (!room.description.empty()) {
+            first_item->appendRow(
+                new LobbyItemDescription(QString::fromStdString(room.description)));
+        }
+        if (!room.members.empty()) {
             first_item->appendRow(new LobbyItemExpandedMemberList(members));
         }
     }
@@ -226,8 +251,8 @@ void Lobby::OnRefreshLobby() {
     // Set the member list child items to span all columns
     for (int i = 0; i < proxy->rowCount(); i++) {
         auto parent = model->item(i, 0);
-        if (parent->hasChildren()) {
+        for (int j = 0; j < parent->rowCount(); j++) {
-            ui->room_list->setFirstColumnSpanned(0, proxy->index(i, 0), true);
+            ui->room_list->setFirstColumnSpanned(j, proxy->index(i, 0), true);
         }
     }
 }

src/citra_qt/multiplayer/lobby_p.h

@@ -55,6 +55,31 @@ public:
     }
 };
 
+class LobbyItemDescription : public LobbyItem {
+public:
+    static const int DescriptionRole = Qt::UserRole + 1;
+
+    LobbyItemDescription() = default;
+    explicit LobbyItemDescription(QString description) {
+        setData(description, DescriptionRole);
+    }
+
+    QVariant data(int role) const override {
+        if (role != Qt::DisplayRole) {
+            return LobbyItem::data(role);
+        }
+        auto description = data(DescriptionRole).toString();
+        description.prepend("Description: ");
+        return description;
+    }
+
+    bool operator<(const QStandardItem& other) const override {
+        return data(DescriptionRole)
+                   .toString()
+                   .localeAwareCompare(other.data(DescriptionRole).toString()) < 0;
+    }
+};
+
 class LobbyItemGame : public LobbyItem {
 public:
     static const int TitleIDRole = Qt::UserRole + 1;
@@ -95,12 +120,14 @@ public:
     static const int HostUsernameRole = Qt::UserRole + 1;
     static const int HostIPRole = Qt::UserRole + 2;
     static const int HostPortRole = Qt::UserRole + 3;
+    static const int HostVerifyUIDRole = Qt::UserRole + 4;
 
     LobbyItemHost() = default;
-    explicit LobbyItemHost(QString username, QString ip, u16 port) {
+    explicit LobbyItemHost(QString username, QString ip, u16 port, QString verify_UID) {
         setData(username, HostUsernameRole);
         setData(ip, HostIPRole);
         setData(port, HostPortRole);
+        setData(verify_UID, HostVerifyUIDRole);
     }
 
     QVariant data(int role) const override {
@@ -121,12 +148,17 @@ class LobbyMember {
 public:
     LobbyMember() = default;
     LobbyMember(const LobbyMember& other) = default;
-    explicit LobbyMember(QString username, u64 title_id, QString game_name)
+    explicit LobbyMember(QString username, QString nickname, u64 title_id, QString game_name)
-        : username(std::move(username)), title_id(title_id), game_name(std::move(game_name)) {}
+        : username(std::move(username)), nickname(std::move(nickname)), title_id(title_id),
+          game_name(std::move(game_name)) {}
     ~LobbyMember() = default;
 
-    QString GetUsername() const {
+    QString GetName() const {
-        return username;
+        if (username.isEmpty() || username == nickname) {
+            return nickname;
+        } else {
+            return QString("%1 (%2)").arg(nickname, username);
+        }
     }
     u64 GetTitleId() const {
         return title_id;
@@ -137,6 +169,7 @@ public:
 
 private:
     QString username;
+    QString nickname;
     u64 title_id;
     QString game_name;
 };
@@ -195,10 +228,9 @@ public:
                 out += '\n';
             const auto& m = member.value<LobbyMember>();
             if (m.GetGameName().isEmpty()) {
-                out += QString(QObject::tr("%1 is not playing a game")).arg(m.GetUsername());
+                out += QString(QObject::tr("%1 is not playing a game")).arg(m.GetName());
             } else {
-                out +=
+                out += QString(QObject::tr("%1 is playing %2")).arg(m.GetName(), m.GetGameName());
-                    QString(QObject::tr("%1 is playing %2")).arg(m.GetUsername(), m.GetGameName());
             }
             first = false;
         }

src/citra_qt/multiplayer/message.cpp

@@ -12,8 +12,8 @@ const ConnectionError USERNAME_NOT_VALID(
     QT_TR_NOOP("Username is not valid. Must be 4 to 20 alphanumeric characters."));
 const ConnectionError ROOMNAME_NOT_VALID(
     QT_TR_NOOP("Room name is not valid. Must be 4 to 20 alphanumeric characters."));
-const ConnectionError USERNAME_IN_USE(
+const ConnectionError USERNAME_NOT_VALID_SERVER(
-    QT_TR_NOOP("Username is already in use. Please choose another."));
+    QT_TR_NOOP("Username is already in use or not valid. Please choose another."));
 const ConnectionError IP_ADDRESS_NOT_VALID(QT_TR_NOOP("IP is not a valid IPv4 address."));
 const ConnectionError PORT_NOT_VALID(QT_TR_NOOP("Port must be a number between 0 to 65535."));
 const ConnectionError NO_INTERNET(
@@ -22,6 +22,8 @@ const ConnectionError UNABLE_TO_CONNECT(
     QT_TR_NOOP("Unable to connect to the host. Verify that the connection settings are correct. If "
                "you still cannot connect, contact the room host and verify that the host is "
                "properly configured with the external port forwarded."));
+const ConnectionError ROOM_IS_FULL(
+    QT_TR_NOOP("Unable to connect to the room because it is already full."));
 const ConnectionError COULD_NOT_CREATE_ROOM(
     QT_TR_NOOP("Creating a room failed. Please retry. Restarting Citra might be necessary."));
 const ConnectionError HOST_BANNED(
@@ -34,8 +36,16 @@ const ConnectionError WRONG_PASSWORD(QT_TR_NOOP("Incorrect password."));
 const ConnectionError GENERIC_ERROR(
     QT_TR_NOOP("An unknown error occured. If this error continues to occur, please open an issue"));
 const ConnectionError LOST_CONNECTION(QT_TR_NOOP("Connection to room lost. Try to reconnect."));
+const ConnectionError HOST_KICKED(QT_TR_NOOP("You have been kicked by the room host."));
 const ConnectionError MAC_COLLISION(
     QT_TR_NOOP("MAC address is already in use. Please choose another."));
+const ConnectionError CONSOLE_ID_COLLISION(QT_TR_NOOP(
+    "Your Console ID conflicted with someone else's in the room.\n\nPlease go to Emulation "
+    "> Configure > System to regenerate your Console ID."));
+const ConnectionError PERMISSION_DENIED(
+    QT_TR_NOOP("You do not have enough permission to perform this action."));
+const ConnectionError NO_SUCH_USER(QT_TR_NOOP(
+    "The user you are trying to kick/ban could not be found.\nThey may have left the room."));
 
 static bool WarnMessage(const std::string& title, const std::string& text) {
     return QMessageBox::Ok == QMessageBox::warning(nullptr, QObject::tr(title.c_str()),

src/citra_qt/multiplayer/message.h

@@ -20,20 +20,27 @@ private:
     std::string err;
 };
 
+/// When the nickname is considered invalid by the client
 extern const ConnectionError USERNAME_NOT_VALID;
 extern const ConnectionError ROOMNAME_NOT_VALID;
-extern const ConnectionError USERNAME_IN_USE;
+/// When the nickname is considered invalid by the room server
+extern const ConnectionError USERNAME_NOT_VALID_SERVER;
 extern const ConnectionError IP_ADDRESS_NOT_VALID;
 extern const ConnectionError PORT_NOT_VALID;
 extern const ConnectionError NO_INTERNET;
 extern const ConnectionError UNABLE_TO_CONNECT;
+extern const ConnectionError ROOM_IS_FULL;
 extern const ConnectionError COULD_NOT_CREATE_ROOM;
 extern const ConnectionError HOST_BANNED;
 extern const ConnectionError WRONG_VERSION;
 extern const ConnectionError WRONG_PASSWORD;
 extern const ConnectionError GENERIC_ERROR;
 extern const ConnectionError LOST_CONNECTION;
+extern const ConnectionError HOST_KICKED;
 extern const ConnectionError MAC_COLLISION;
+extern const ConnectionError CONSOLE_ID_COLLISION;
+extern const ConnectionError PERMISSION_DENIED;
+extern const ConnectionError NO_SUCH_USER;
 
 /**
  *  Shows a standard QMessageBox with a error message

src/citra_qt/multiplayer/moderation_dialog.cpp

@@ -0,0 +1,113 @@
+// Copyright 2018 Citra Emulator Project
+// Licensed under GPLv2 or any later version
+// Refer to the license.txt file included.
+
+#include <QStandardItem>
+#include <QStandardItemModel>
+#include "citra_qt/multiplayer/moderation_dialog.h"
+#include "network/network.h"
+#include "network/room_member.h"
+#include "ui_moderation_dialog.h"
+
+namespace Column {
+enum {
+    SUBJECT,
+    TYPE,
+    COUNT,
+};
+}
+
+ModerationDialog::ModerationDialog(QWidget* parent)
+    : QDialog(parent), ui(std::make_unique<Ui::ModerationDialog>()) {
+    ui->setupUi(this);
+
+    qRegisterMetaType<Network::Room::BanList>();
+
+    if (auto member = Network::GetRoomMember().lock()) {
+        callback_handle_status_message = member->BindOnStatusMessageReceived(
+            [this](const Network::StatusMessageEntry& status_message) {
+                emit StatusMessageReceived(status_message);
+            });
+        connect(this, &ModerationDialog::StatusMessageReceived, this,
+                &ModerationDialog::OnStatusMessageReceived);
+        callback_handle_ban_list = member->BindOnBanListReceived(
+            [this](const Network::Room::BanList& ban_list) { emit BanListReceived(ban_list); });
+        connect(this, &ModerationDialog::BanListReceived, this, &ModerationDialog::PopulateBanList);
+    }
+
+    // Initialize the UI
+    model = new QStandardItemModel(ui->ban_list_view);
+    model->insertColumns(0, Column::COUNT);
+    model->setHeaderData(Column::SUBJECT, Qt::Horizontal, tr("Subject"));
+    model->setHeaderData(Column::TYPE, Qt::Horizontal, tr("Type"));
+
+    ui->ban_list_view->setModel(model);
+
+    // Load the ban list in background
+    LoadBanList();
+
+    connect(ui->refresh, &QPushButton::clicked, this, [this] { LoadBanList(); });
+    connect(ui->unban, &QPushButton::clicked, this, [this] {
+        auto index = ui->ban_list_view->currentIndex();
+        SendUnbanRequest(model->item(index.row(), 0)->text());
+    });
+    connect(ui->ban_list_view, &QTreeView::clicked, [this] { ui->unban->setEnabled(true); });
+}
+
+ModerationDialog::~ModerationDialog() {
+    if (callback_handle_status_message) {
+        if (auto room = Network::GetRoomMember().lock()) {
+            room->Unbind(callback_handle_status_message);
+        }
+    }
+
+    if (callback_handle_ban_list) {
+        if (auto room = Network::GetRoomMember().lock()) {
+            room->Unbind(callback_handle_ban_list);
+        }
+    }
+}
+
+void ModerationDialog::LoadBanList() {
+    if (auto room = Network::GetRoomMember().lock()) {
+        ui->refresh->setEnabled(false);
+        ui->refresh->setText(tr("Refreshing"));
+        ui->unban->setEnabled(false);
+        room->RequestBanList();
+    }
+}
+
+void ModerationDialog::PopulateBanList(const Network::Room::BanList& ban_list) {
+    model->removeRows(0, model->rowCount());
+    for (const auto& username : ban_list.first) {
+        QStandardItem* subject_item = new QStandardItem(QString::fromStdString(username));
+        QStandardItem* type_item = new QStandardItem(tr("Forum Username"));
+        model->invisibleRootItem()->appendRow({subject_item, type_item});
+    }
+    for (const auto& ip : ban_list.second) {
+        QStandardItem* subject_item = new QStandardItem(QString::fromStdString(ip));
+        QStandardItem* type_item = new QStandardItem(tr("IP Address"));
+        model->invisibleRootItem()->appendRow({subject_item, type_item});
+    }
+    for (int i = 0; i < Column::COUNT - 1; ++i) {
+        ui->ban_list_view->resizeColumnToContents(i);
+    }
+    ui->refresh->setEnabled(true);
+    ui->refresh->setText(tr("Refresh"));
+    ui->unban->setEnabled(false);
+}
+
+void ModerationDialog::SendUnbanRequest(const QString& subject) {
+    if (auto room = Network::GetRoomMember().lock()) {
+        room->SendModerationRequest(Network::IdModUnban, subject.toStdString());
+    }
+}
+
+void ModerationDialog::OnStatusMessageReceived(const Network::StatusMessageEntry& status_message) {
+    if (status_message.type != Network::IdMemberBanned &&
+        status_message.type != Network::IdAddressUnbanned)
+        return;
+
+    // Update the ban list for ban/unban
+    LoadBanList();
+}

src/citra_qt/multiplayer/moderation_dialog.h

@@ -0,0 +1,42 @@
+// Copyright 2018 Citra Emulator Project
+// Licensed under GPLv2 or any later version
+// Refer to the license.txt file included.
+
+#pragma once
+
+#include <memory>
+#include <optional>
+#include <QDialog>
+#include "network/room.h"
+#include "network/room_member.h"
+
+namespace Ui {
+class ModerationDialog;
+}
+
+class QStandardItemModel;
+
+class ModerationDialog : public QDialog {
+    Q_OBJECT
+
+public:
+    explicit ModerationDialog(QWidget* parent = nullptr);
+    ~ModerationDialog();
+
+signals:
+    void StatusMessageReceived(const Network::StatusMessageEntry&);
+    void BanListReceived(const Network::Room::BanList&);
+
+private:
+    void LoadBanList();
+    void PopulateBanList(const Network::Room::BanList& ban_list);
+    void SendUnbanRequest(const QString& subject);
+    void OnStatusMessageReceived(const Network::StatusMessageEntry& status_message);
+
+    std::unique_ptr<Ui::ModerationDialog> ui;
+    QStandardItemModel* model;
+    Network::RoomMember::CallbackHandle<Network::StatusMessageEntry> callback_handle_status_message;
+    Network::RoomMember::CallbackHandle<Network::Room::BanList> callback_handle_ban_list;
+};
+
+Q_DECLARE_METATYPE(Network::Room::BanList);

src/citra_qt/multiplayer/moderation_dialog.ui

@@ -0,0 +1,84 @@
+<?xml version="1.0" encoding="UTF-8"?>
+<ui version="4.0">
+ <class>ModerationDialog</class>
+ <widget class="QDialog" name="ModerationDialog">
+  <property name="windowTitle">
+   <string>Moderation</string>
+  </property>
+  <property name="geometry">
+   <rect>
+    <x>0</x>
+    <y>0</y>
+    <width>500</width>
+    <height>300</height>
+   </rect>
+  </property>
+  <layout class="QVBoxLayout">
+   <item>
+    <widget class="QGroupBox" name="ban_list_group_box">
+     <property name="title">
+      <string>Ban List</string>
+     </property>
+     <layout class="QVBoxLayout">
+      <item>
+       <layout class="QHBoxLayout">
+        <item>
+         <spacer name="horizontalSpacer">
+          <property name="orientation">
+           <enum>Qt::Horizontal</enum>
+          </property>
+          <property name="sizeHint" stdset="0">
+           <size>
+            <width>40</width>
+            <height>20</height>
+           </size>
+          </property>
+         </spacer>
+        </item>
+        <item>
+         <widget class="QPushButton" name="refresh">
+          <property name="text">
+           <string>Refreshing</string>
+          </property>
+          <property name="enabled">
+           <bool>false</bool>
+          </property>
+         </widget>
+        </item>
+        <item>
+         <widget class="QPushButton" name="unban">
+          <property name="text">
+           <string>Unban</string>
+          </property>
+          <property name="enabled">
+           <bool>false</bool>
+          </property>
+         </widget>
+        </item>
+       </layout>
+      </item>
+      <item>
+       <widget class="QTreeView" name="ban_list_view"/>
+      </item>
+     </layout>
+    </widget>
+   </item>
+   <item>
+    <widget class="QDialogButtonBox" name="buttonBox">
+     <property name="standardButtons">
+      <set>QDialogButtonBox::Ok</set>
+     </property>
+    </widget>
+   </item>
+  </layout>
+ </widget>
+ <connections>
+  <connection>
+   <sender>buttonBox</sender>
+   <signal>accepted()</signal>
+   <receiver>ModerationDialog</receiver>
+   <slot>accept()</slot>
+  </connection>
+ </connections>
+ <resources/>
+</ui>

src/citra_qt/multiplayer/state.cpp

@@ -3,6 +3,7 @@
 // Refer to the license.txt file included.
 
 #include <QAction>
+#include <QApplication>
 #include <QIcon>
 #include <QMessageBox>
 #include <QStandardItemModel>
@@ -13,6 +14,7 @@
 #include "citra_qt/multiplayer/lobby.h"
 #include "citra_qt/multiplayer/message.h"
 #include "citra_qt/multiplayer/state.h"
+#include "citra_qt/ui_settings.h"
 #include "citra_qt/util/clickable_label.h"
 #include "common/announce_multiplayer_room.h"
 #include "common/logging/log.h"
@@ -27,9 +29,13 @@ MultiplayerState::MultiplayerState(QWidget* parent, QStandardItemModel* game_lis
             [this](const Network::RoomMember::State& state) { emit NetworkStateChanged(state); });
         connect(this, &MultiplayerState::NetworkStateChanged, this,
                 &MultiplayerState::OnNetworkStateChanged);
+        error_callback_handle = member->BindOnError(
+            [this](const Network::RoomMember::Error& error) { emit NetworkError(error); });
+        connect(this, &MultiplayerState::NetworkError, this, &MultiplayerState::OnNetworkError);
     }
 
     qRegisterMetaType<Network::RoomMember::State>();
+    qRegisterMetaType<Network::RoomMember::Error>();
     qRegisterMetaType<Common::WebResult>();
     announce_multiplayer_session = std::make_shared<Core::AnnounceMultiplayerSession>();
     announce_multiplayer_session->BindErrorCallback(
@@ -44,6 +50,13 @@ MultiplayerState::MultiplayerState(QWidget* parent, QStandardItemModel* game_lis
 
     connect(status_text, &ClickableLabel::clicked, this, &MultiplayerState::OnOpenNetworkRoom);
     connect(status_icon, &ClickableLabel::clicked, this, &MultiplayerState::OnOpenNetworkRoom);
+
+    connect(static_cast<QApplication*>(QApplication::instance()), &QApplication::focusChanged, this,
+            [this](QWidget* /*old*/, QWidget* now) {
+                if (client_room && client_room->isAncestorOf(now)) {
+                    HideNotification();
+                }
+            });
 }
 
 MultiplayerState::~MultiplayerState() {
@@ -52,6 +65,12 @@ MultiplayerState::~MultiplayerState() {
             member->Unbind(state_callback_handle);
         }
     }
+
+    if (error_callback_handle) {
+        if (auto member = Network::GetRoomMember().lock()) {
+            member->Unbind(error_callback_handle);
+        }
+    }
 }
 
 void MultiplayerState::Close() {
@@ -70,7 +89,9 @@ void MultiplayerState::retranslateUi() {
 
     if (current_state == Network::RoomMember::State::Uninitialized) {
         status_text->setText(tr("Not Connected. Click here to find a room!"));
-    } else if (current_state == Network::RoomMember::State::Joined) {
+    } else if (current_state == Network::RoomMember::State::Joined ||
+               current_state == Network::RoomMember::State::Moderator) {
+
         status_text->setText(tr("Connected"));
     } else {
         status_text->setText(tr("Not Connected"));
@@ -88,35 +109,10 @@ void MultiplayerState::retranslateUi() {
 
 void MultiplayerState::OnNetworkStateChanged(const Network::RoomMember::State& state) {
     LOG_DEBUG(Frontend, "Network State: {}", Network::GetStateStr(state));
-    bool is_connected = false;
+    if (state == Network::RoomMember::State::Joined ||
-    switch (state) {
+        state == Network::RoomMember::State::Moderator) {
-    case Network::RoomMember::State::LostConnection:
+
-        NetworkMessage::ShowError(NetworkMessage::LOST_CONNECTION);
-        break;
-    case Network::RoomMember::State::CouldNotConnect:
-        NetworkMessage::ShowError(NetworkMessage::UNABLE_TO_CONNECT);
-        break;
-    case Network::RoomMember::State::NameCollision:
-        NetworkMessage::ShowError(NetworkMessage::USERNAME_IN_USE);
-        break;
-    case Network::RoomMember::State::MacCollision:
-        NetworkMessage::ShowError(NetworkMessage::MAC_COLLISION);
-        break;
-    case Network::RoomMember::State::WrongPassword:
-        NetworkMessage::ShowError(NetworkMessage::WRONG_PASSWORD);
-        break;
-    case Network::RoomMember::State::WrongVersion:
-        NetworkMessage::ShowError(NetworkMessage::WRONG_VERSION);
-        break;
-    case Network::RoomMember::State::Error:
-        NetworkMessage::ShowError(NetworkMessage::UNABLE_TO_CONNECT);
-        break;
-    case Network::RoomMember::State::Joined:
-        is_connected = true;
         OnOpenNetworkRoom();
-        break;
-    }
-    if (is_connected) {
         status_icon->setPixmap(QIcon::fromTheme("connected").pixmap(16));
         status_text->setText(tr("Connected"));
         leave_room->setEnabled(true);
@@ -131,6 +127,51 @@ void MultiplayerState::OnNetworkStateChanged(const Network::RoomMember::State& s
     current_state = state;
 }
 
+void MultiplayerState::OnNetworkError(const Network::RoomMember::Error& error) {
+    LOG_DEBUG(Frontend, "Network Error: {}", Network::GetErrorStr(error));
+    switch (error) {
+    case Network::RoomMember::Error::LostConnection:
+        NetworkMessage::ShowError(NetworkMessage::LOST_CONNECTION);
+        break;
+    case Network::RoomMember::Error::HostKicked:
+        NetworkMessage::ShowError(NetworkMessage::HOST_KICKED);
+        break;
+    case Network::RoomMember::Error::CouldNotConnect:
+        NetworkMessage::ShowError(NetworkMessage::UNABLE_TO_CONNECT);
+        break;
+    case Network::RoomMember::Error::NameCollision:
+        NetworkMessage::ShowError(NetworkMessage::USERNAME_NOT_VALID_SERVER);
+        break;
+    case Network::RoomMember::Error::MacCollision:
+        NetworkMessage::ShowError(NetworkMessage::MAC_COLLISION);
+        break;
+    case Network::RoomMember::Error::ConsoleIdCollision:
+        NetworkMessage::ShowError(NetworkMessage::CONSOLE_ID_COLLISION);
+        break;
+    case Network::RoomMember::Error::RoomIsFull:
+        NetworkMessage::ShowError(NetworkMessage::ROOM_IS_FULL);
+        break;
+    case Network::RoomMember::Error::WrongPassword:
+        NetworkMessage::ShowError(NetworkMessage::WRONG_PASSWORD);
+        break;
+    case Network::RoomMember::Error::WrongVersion:
+        NetworkMessage::ShowError(NetworkMessage::WRONG_VERSION);
+        break;
+    case Network::RoomMember::Error::HostBanned:
+        NetworkMessage::ShowError(NetworkMessage::HOST_BANNED);
+        break;
+    case Network::RoomMember::Error::UnknownError:
+        NetworkMessage::ShowError(NetworkMessage::UNABLE_TO_CONNECT);
+        break;
+    case Network::RoomMember::Error::PermissionDenied:
+        NetworkMessage::ShowError(NetworkMessage::PERMISSION_DENIED);
+        break;
+    case Network::RoomMember::Error::NoSuchUser:
+        NetworkMessage::ShowError(NetworkMessage::NO_SUCH_USER);
+        break;
+    }
+}
+
 void MultiplayerState::OnAnnounceFailed(const Common::WebResult& result) {
     announce_multiplayer_session->Stop();
     QMessageBox::warning(
@@ -144,7 +185,11 @@ void MultiplayerState::OnAnnounceFailed(const Common::WebResult& result) {
 }
 
 void MultiplayerState::UpdateThemedIcons() {
-    if (current_state == Network::RoomMember::State::Joined) {
+    if (show_notification) {
+        status_icon->setPixmap(QIcon::fromTheme("connected_notification").pixmap(16));
+    } else if (current_state == Network::RoomMember::State::Joined ||
+               current_state == Network::RoomMember::State::Moderator) {
+
         status_icon->setPixmap(QIcon::fromTheme("connected").pixmap(16));
     } else {
         status_icon->setPixmap(QIcon::fromTheme("disconnected").pixmap(16));
@@ -185,6 +230,10 @@ bool MultiplayerState::OnCloseRoom() {
         if (room->GetState() != Network::Room::State::Open) {
             return true;
         }
+        // Save ban list
+        if (auto room = Network::GetRoom().lock()) {
+            UISettings::values.ban_list = std::move(room->GetBanList());
+        }
         room->Destroy();
         announce_multiplayer_session->Stop();
         LOG_DEBUG(Frontend, "Closed the room (as a server)");
@@ -192,11 +241,28 @@ bool MultiplayerState::OnCloseRoom() {
     return true;
 }
 
+void MultiplayerState::ShowNotification() {
+    if (client_room && client_room->isAncestorOf(QApplication::focusWidget()))
+        return; // Do not show notification if the chat window currently has focus
+    show_notification = true;
+    QApplication::alert(nullptr);
+    status_icon->setPixmap(QIcon::fromTheme("connected_notification").pixmap(16));
+    status_text->setText(tr("New Messages Received"));
+}
+
+void MultiplayerState::HideNotification() {
+    show_notification = false;
+    status_icon->setPixmap(QIcon::fromTheme("connected").pixmap(16));
+    status_text->setText(tr("Connected"));
+}
+
 void MultiplayerState::OnOpenNetworkRoom() {
     if (auto member = Network::GetRoomMember().lock()) {
         if (member->IsConnected()) {
             if (client_room == nullptr) {
                 client_room = new ClientRoomWindow(this);
+                connect(client_room, &ClientRoomWindow::ShowNotification, this,
+                        &MultiplayerState::ShowNotification);
             }
             BringWidgetToFront(client_room);
             return;

src/citra_qt/multiplayer/state.h

@@ -40,6 +40,7 @@ public:
 
 public slots:
     void OnNetworkStateChanged(const Network::RoomMember::State& state);
+    void OnNetworkError(const Network::RoomMember::Error& error);
     void OnViewLobby();
     void OnCreateRoom();
     bool OnCloseRoom();
@@ -47,9 +48,12 @@ public slots:
     void OnDirectConnectToRoom();
     void OnAnnounceFailed(const Common::WebResult&);
     void UpdateThemedIcons();
+    void ShowNotification();
+    void HideNotification();
 
 signals:
     void NetworkStateChanged(const Network::RoomMember::State&);
+    void NetworkError(const Network::RoomMember::Error&);
     void AnnounceFailed(const Common::WebResult&);
 
 private:
@@ -64,7 +68,11 @@ private:
     QAction* show_room;
     std::shared_ptr<Core::AnnounceMultiplayerSession> announce_multiplayer_session;
     Network::RoomMember::State current_state = Network::RoomMember::State::Uninitialized;
+    bool has_mod_perms = false;
     Network::RoomMember::CallbackHandle<Network::RoomMember::State> state_callback_handle;
+    Network::RoomMember::CallbackHandle<Network::RoomMember::Error> error_callback_handle;
+
+    bool show_notification = false;
 };
 
 Q_DECLARE_METATYPE(Common::WebResult);

src/citra_qt/ui_settings.h

@@ -5,6 +5,8 @@
 #pragma once
 
 #include <array>
+#include <string>
+#include <utility>
 #include <vector>
 #include <QByteArray>
 #include <QMetaType>
@@ -109,6 +111,8 @@ struct Values {
     QString room_port;
     uint host_type;
     qulonglong game_id;
+    QString room_description;
+    std::pair<std::vector<std::string>, std::vector<std::string>> ban_list;
 
     // logging
     bool show_console;

src/common/announce_multiplayer_room.h

@@ -17,13 +17,17 @@ using MacAddress = std::array<u8, 6>;
 
 struct Room {
     struct Member {
-        std::string name;
+        std::string username;
+        std::string nickname;
+        std::string avatar_url;
         MacAddress mac_address;
         std::string game_name;
         u64 game_id;
     };
+    std::string id;
+    std::string verify_UID; ///< UID used for verification
     std::string name;
-    std::string UID;
+    std::string description;
     std::string owner;
     std::string ip;
     u16 port;
@@ -49,14 +53,15 @@ public:
      * Sets the Information that gets used for the announce
      * @param uid The Id of the room
      * @param name The name of the room
+     * @param description The room description
      * @param port The port of the room
      * @param net_version The version of the libNetwork that gets used
      * @param has_password True if the room is passowrd protected
      * @param preferred_game The preferred game of the room
      * @param preferred_game_id The title id of the preferred game
      */
-    virtual void SetRoomInformation(const std::string& uid, const std::string& name, const u16 port,
+    virtual void SetRoomInformation(const std::string& name, const std::string& description,
-                                    const u32 max_player, const u32 net_version,
+                                    const u16 port, const u32 max_player, const u32 net_version,
                                     const bool has_password, const std::string& preferred_game,
                                     const u64 preferred_game_id) = 0;
     /**
@@ -66,14 +71,21 @@ public:
      * @param game_id The title id of the game the player plays
      * @param game_name The name of the game the player plays
      */
-    virtual void AddPlayer(const std::string& nickname, const MacAddress& mac_address,
+    virtual void AddPlayer(const std::string& username, const std::string& nickname,
+                           const std::string& avatar_url, const MacAddress& mac_address,
                            const u64 game_id, const std::string& game_name) = 0;
 
     /**
-     * Send the data to the announce service
+     * Updates the data in the announce service. Re-register the room when required.
-     * @result The result of the announce attempt
+     * @result The result of the update attempt
      */
-    virtual Common::WebResult Announce() = 0;
+    virtual Common::WebResult Update() = 0;
+
+    /**
+     * Registers the data in the announce service
+     * @result A global Guid of the room which may be used for verification
+     */
+    virtual std::string Register() = 0;
 
     /**
      * Empties the stored players
@@ -99,15 +111,19 @@ public:
 class NullBackend : public Backend {
 public:
     ~NullBackend() = default;
-    void SetRoomInformation(const std::string& /*uid*/, const std::string& /*name*/,
+    void SetRoomInformation(const std::string& /*name*/, const std::string& /*description*/,
                             const u16 /*port*/, const u32 /*max_player*/, const u32 /*net_version*/,
                             const bool /*has_password*/, const std::string& /*preferred_game*/,
                             const u64 /*preferred_game_id*/) override {}
-    void AddPlayer(const std::string& /*nickname*/, const MacAddress& /*mac_address*/,
+    void AddPlayer(const std::string& /*username*/, const std::string& /*nickname*/,
+                   const std::string& /*avatar_url*/, const MacAddress& /*mac_address*/,
                    const u64 /*game_id*/, const std::string& /*game_name*/) override {}
-    Common::WebResult Announce() override {
+    Common::WebResult Update() override {
         return Common::WebResult{Common::WebResult::Code::NoWebservice, "WebService is missing"};
     }
+    std::string Register() override {
+        return "";
+    }
     void ClearPlayers() override {}
     RoomList GetRoomList() override {
         return RoomList{};

src/core/announce_multiplayer_session.cpp

@@ -29,6 +29,21 @@ AnnounceMultiplayerSession::AnnounceMultiplayerSession() {
 #endif
 }
 
+void AnnounceMultiplayerSession::Register() {
+    std::shared_ptr<Network::Room> room = Network::GetRoom().lock();
+    if (!room) {
+        return;
+    }
+    if (room->GetState() != Network::Room::State::Open) {
+        return;
+    }
+    UpdateBackendData(room);
+    std::string result = backend->Register();
+    LOG_INFO(WebService, "Room has been registered");
+    room->SetVerifyUID(result);
+    registered = true;
+}
+
 void AnnounceMultiplayerSession::Start() {
     if (announce_multiplayer_thread) {
         Stop();
@@ -44,6 +59,7 @@ void AnnounceMultiplayerSession::Stop() {
         announce_multiplayer_thread->join();
         announce_multiplayer_thread.reset();
         backend->Delete();
+        registered = false;
     }
 }
 
@@ -64,7 +80,24 @@ AnnounceMultiplayerSession::~AnnounceMultiplayerSession() {
     Stop();
 }
 
+void AnnounceMultiplayerSession::UpdateBackendData(std::shared_ptr<Network::Room> room) {
+    Network::RoomInformation room_information = room->GetRoomInformation();
+    std::vector<Network::Room::Member> memberlist = room->GetRoomMemberList();
+    backend->SetRoomInformation(
+        room_information.name, room_information.description, room_information.port,
+        room_information.member_slots, Network::network_version, room->HasPassword(),
+        room_information.preferred_game, room_information.preferred_game_id);
+    backend->ClearPlayers();
+    for (const auto& member : memberlist) {
+        backend->AddPlayer(member.username, member.nickname, member.avatar_url, member.mac_address,
+                           member.game_info.id, member.game_info.name);
+    }
+}
+
 void AnnounceMultiplayerSession::AnnounceMultiplayerLoop() {
+    if (!registered) {
+        Register();
+    }
     auto update_time = std::chrono::steady_clock::now();
     std::future<Common::WebResult> future;
     while (!shutdown_event.WaitUntil(update_time)) {
@@ -76,24 +109,19 @@ void AnnounceMultiplayerSession::AnnounceMultiplayerLoop() {
         if (room->GetState() != Network::Room::State::Open) {
             break;
         }
-        Network::RoomInformation room_information = room->GetRoomInformation();
+        UpdateBackendData(room);
-        std::vector<Network::Room::Member> memberlist = room->GetRoomMemberList();
+        Common::WebResult result = backend->Update();
-        backend->SetRoomInformation(
-            room_information.uid, room_information.name, room_information.port,
-            room_information.member_slots, Network::network_version, room->HasPassword(),
-            room_information.preferred_game, room_information.preferred_game_id);
-        backend->ClearPlayers();
-        for (const auto& member : memberlist) {
-            backend->AddPlayer(member.nickname, member.mac_address, member.game_info.id,
-                               member.game_info.name);
-        }
-        Common::WebResult result = backend->Announce();
         if (result.result_code != Common::WebResult::Code::Success) {
             std::lock_guard<std::mutex> lock(callback_mutex);
             for (auto callback : error_callbacks) {
                 (*callback)(result);
             }
         }
+        if (result.result_string == "404") {
+            registered = false;
+            // Needs to register the room again
+            Register();
+        }
     }
 }
 

src/core/announce_multiplayer_session.h

@@ -4,6 +4,7 @@
 
 #pragma once
 
+#include <atomic>
 #include <functional>
 #include <memory>
 #include <mutex>
@@ -13,6 +14,10 @@
 #include "common/common_types.h"
 #include "common/thread.h"
 
+namespace Network {
+class Room;
+}
+
 namespace Core {
 
 /**
@@ -39,6 +44,9 @@ public:
      */
     void UnbindErrorCallback(CallbackHandle handle);
 
+    /// Registers a room to web services
+    void Register();
+
     /**
      * Starts the announce of a room to web services
      */
@@ -65,6 +73,9 @@ private:
     /// Backend interface that logs fields
     std::unique_ptr<AnnounceMultiplayerRoom::Backend> backend;
 
+    std::atomic_bool registered = false; ///< Whether the room has been registered
+
+    void UpdateBackendData(std::shared_ptr<Network::Room> room);
     void AnnounceMultiplayerLoop();
 };
 

src/core/hle/service/cfg/cfg.cpp

@@ -734,4 +734,21 @@ void InstallInterfaces(Core::System& system) {
     std::make_shared<CFG_NOR>()->InstallAsService(service_manager);
 }
 
+std::string GetConsoleIdHash(Core::System& system) {
+    u64_le console_id{};
+    std::array<u8, sizeof(console_id)> buffer;
+    if (system.IsPoweredOn()) {
+        auto cfg = GetModule(system);
+        ASSERT_MSG(cfg, "CFG Module missing!");
+        console_id = cfg->GetConsoleUniqueId();
+    } else {
+        console_id = std::make_unique<Service::CFG::Module>()->GetConsoleUniqueId();
+    }
+    std::memcpy(buffer.data(), &console_id, sizeof(console_id));
+
+    std::array<u8, CryptoPP::SHA256::DIGESTSIZE> hash;
+    CryptoPP::SHA256().CalculateDigest(hash.data(), buffer.data(), sizeof(buffer));
+    return fmt::format("{:02x}", fmt::join(hash.begin(), hash.end(), ""));
+}
+
 } // namespace Service::CFG

src/core/hle/service/cfg/cfg.h

@@ -415,4 +415,7 @@ std::shared_ptr<Module> GetModule(Core::System& system);
 
 void InstallInterfaces(Core::System& system);
 
+/// Convenience function for getting a SHA256 hash of the Console ID
+std::string GetConsoleIdHash(Core::System& system);
+
 } // namespace Service::CFG

src/core/hle/service/nwm/nwm_uds.cpp

@@ -140,7 +140,9 @@ std::list<Network::WifiPacket> GetReceivedBeacons(const MacAddress& sender) {
 /// Sends a WifiPacket to the room we're currently connected to.
 void SendPacket(Network::WifiPacket& packet) {
     if (auto room_member = Network::GetRoomMember().lock()) {
-        if (room_member->GetState() == Network::RoomMember::State::Joined) {
+        if (room_member->GetState() == Network::RoomMember::State::Joined ||
+            room_member->GetState() == Network::RoomMember::State::Moderator) {
+
             packet.transmitter_address = room_member->GetMacAddress();
             room_member->SendWifiPacket(packet);
         }

src/dedicated_room/CMakeLists.txt

@@ -8,6 +8,11 @@ add_executable(citra-room
 create_target_directory_groups(citra-room)
 
 target_link_libraries(citra-room PRIVATE common core network)
+if (ENABLE_WEB_SERVICE)
+    target_compile_definitions(citra-room PRIVATE -DENABLE_WEB_SERVICE)
+    target_link_libraries(citra-room PRIVATE web_service)
+endif()
+
 target_link_libraries(citra-room PRIVATE glad)
 if (MSVC)
     target_link_libraries(citra-room PRIVATE getopt)

src/dedicated_room/citra-room.cpp

@@ -3,6 +3,7 @@
 // Refer to the license.txt file included.
 
 #include <chrono>
+#include <fstream>
 #include <iostream>
 #include <memory>
 #include <regex>
@@ -27,15 +28,23 @@
 #include "common/common_types.h"
 #include "common/detached_tasks.h"
 #include "common/scm_rev.h"
+#include "common/string_util.h"
 #include "core/announce_multiplayer_session.h"
 #include "core/core.h"
 #include "core/settings.h"
 #include "network/network.h"
+#include "network/room.h"
+#include "network/verify_user.h"
+
+#ifdef ENABLE_WEB_SERVICE
+#include "web_service/verify_user_jwt.h"
+#endif
 
 static void PrintHelp(const char* argv0) {
     std::cout << "Usage: " << argv0
               << " [options] <filename>\n"
                  "--room-name         The name of the room\n"
+                 "--room-description  The room description\n"
                  "--port              The port used for the room\n"
                  "--max_members       The maximum number of players for this room\n"
                  "--password          The password for the room\n"
@@ -44,6 +53,8 @@ static void PrintHelp(const char* argv0) {
                  "--username          The username used for announce\n"
                  "--token             The token used for announce\n"
                  "--web-api-url       Citra Web API url\n"
+                 "--ban-list-file     The file for storing the room ban list\n"
+                 "--enable-citra-mods Allow Citra Community Moderators to moderate on your room\n"
                  "-h, --help          Display this help and exit\n"
                  "-v, --version       Output version information and exit\n";
 }
@@ -53,6 +64,71 @@ static void PrintVersion() {
               << " Libnetwork: " << Network::network_version << std::endl;
 }
 
+/// The magic text at the beginning of a citra-room ban list file.
+static constexpr char BanListMagic[] = "CitraRoom-BanList-1";
+
+static Network::Room::BanList LoadBanList(const std::string& path) {
+    std::ifstream file;
+    OpenFStream(file, path, std::ios_base::in);
+    if (!file || file.eof()) {
+        std::cout << "Could not open ban list!\n\n";
+        return {};
+    }
+    std::string magic;
+    std::getline(file, magic);
+    if (magic != BanListMagic) {
+        std::cout << "Ban list is not valid!\n\n";
+        return {};
+    }
+
+    // false = username ban list, true = ip ban list
+    bool ban_list_type = false;
+    Network::Room::UsernameBanList username_ban_list;
+    Network::Room::IPBanList ip_ban_list;
+    while (!file.eof()) {
+        std::string line;
+        std::getline(file, line);
+        line.erase(std::remove(line.begin(), line.end(), '\0'), line.end());
+        line = Common::StripSpaces(line);
+        if (line.empty()) {
+            // An empty line marks start of the IP ban list
+            ban_list_type = true;
+            continue;
+        }
+        if (ban_list_type) {
+            ip_ban_list.emplace_back(line);
+        } else {
+            username_ban_list.emplace_back(line);
+        }
+    }
+
+    return {username_ban_list, ip_ban_list};
+}
+
+static void SaveBanList(const Network::Room::BanList& ban_list, const std::string& path) {
+    std::ofstream file;
+    OpenFStream(file, path, std::ios_base::out);
+    if (!file) {
+        std::cout << "Could not save ban list!\n\n";
+        return;
+    }
+
+    file << BanListMagic << "\n";
+
+    // Username ban list
+    for (const auto& username : ban_list.first) {
+        file << username << "\n";
+    }
+    file << "\n";
+
+    // IP ban list
+    for (const auto& ip : ban_list.second) {
+        file << ip << "\n";
+    }
+
+    file.flush();
+}
+
 /// Application entry point
 int main(int argc, char** argv) {
     Common::DetachedTasks detached_tasks;
@@ -63,17 +139,21 @@ int main(int argc, char** argv) {
     gladLoadGL();
 
     std::string room_name;
+    std::string room_description;
     std::string password;
     std::string preferred_game;
     std::string username;
     std::string token;
     std::string web_api_url;
+    std::string ban_list_file;
     u64 preferred_game_id = 0;
     u32 port = Network::DefaultRoomPort;
     u32 max_members = 16;
+    bool enable_citra_mods = false;
 
     static struct option long_options[] = {
         {"room-name", required_argument, 0, 'n'},
+        {"room-description", required_argument, 0, 'd'},
         {"port", required_argument, 0, 'p'},
         {"max_members", required_argument, 0, 'm'},
         {"password", required_argument, 0, 'w'},
@@ -82,18 +162,23 @@ int main(int argc, char** argv) {
         {"username", required_argument, 0, 'u'},
         {"token", required_argument, 0, 't'},
         {"web-api-url", required_argument, 0, 'a'},
+        {"ban-list-file", required_argument, 0, 'b'},
+        {"enable-citra-mods", no_argument, 0, 'e'},
         {"help", no_argument, 0, 'h'},
         {"version", no_argument, 0, 'v'},
         {0, 0, 0, 0},
     };
 
     while (optind < argc) {
-        char arg = getopt_long(argc, argv, "n:p:m:w:g:u:t:a:i:hv", long_options, &option_index);
+        char arg = getopt_long(argc, argv, "n:d:p:m:w:g:u:t:a:i:hv", long_options, &option_index);
         if (arg != -1) {
             switch (arg) {
             case 'n':
                 room_name.assign(optarg);
                 break;
+            case 'd':
+                room_description.assign(optarg);
+                break;
             case 'p':
                 port = strtoul(optarg, &endarg, 0);
                 break;
@@ -118,6 +203,12 @@ int main(int argc, char** argv) {
             case 'a':
                 web_api_url.assign(optarg);
                 break;
+            case 'b':
+                ban_list_file.assign(optarg);
+                break;
+            case 'e':
+                enable_citra_mods = true;
+                break;
             case 'h':
                 PrintHelp(argv[0]);
                 return 0;
@@ -153,6 +244,10 @@ int main(int argc, char** argv) {
         PrintHelp(argv[0]);
         return -1;
     }
+    if (ban_list_file.empty()) {
+        std::cout << "Ban list file not set!\nThis should get set to load and save room ban "
+                     "list.\nSet with --ban-list-file <file>\n\n";
+    }
     bool announce = true;
     if (username.empty()) {
         announce = false;
@@ -172,11 +267,35 @@ int main(int argc, char** argv) {
         Settings::values.citra_username = username;
         Settings::values.citra_token = token;
     }
+    if (!announce && enable_citra_mods) {
+        enable_citra_mods = false;
+        std::cout << "Can not enable Citra Moderators for private rooms\n\n";
+    }
+
+    // Load the ban list
+    Network::Room::BanList ban_list;
+    if (!ban_list_file.empty()) {
+        ban_list = LoadBanList(ban_list_file);
+    }
+
+    std::unique_ptr<Network::VerifyUser::Backend> verify_backend;
+    if (announce) {
+#ifdef ENABLE_WEB_SERVICE
+        verify_backend = std::make_unique<WebService::VerifyUserJWT>(Settings::values.web_api_url);
+#else
+        std::cout
+            << "Citra Web Services is not available with this build: validation is disabled.\n\n";
+        verify_backend = std::make_unique<Network::VerifyUser::NullBackend>();
+#endif
+    } else {
+        verify_backend = std::make_unique<Network::VerifyUser::NullBackend>();
+    }
 
     Network::Init();
     if (std::shared_ptr<Network::Room> room = Network::GetRoom().lock()) {
-        if (!room->Create(room_name, "", port, password, max_members, preferred_game,
+        if (!room->Create(room_name, room_description, "", port, password, max_members, username,
-                          preferred_game_id)) {
+                          preferred_game, preferred_game_id, std::move(verify_backend), ban_list,
+                          enable_citra_mods)) {
             std::cout << "Failed to create room: \n\n";
             return -1;
         }
@@ -193,6 +312,10 @@ int main(int argc, char** argv) {
                     announce_session->Stop();
                 }
                 announce_session.reset();
+                // Save the ban list
+                if (!ban_list_file.empty()) {
+                    SaveBanList(room->GetBanList(), ban_list_file);
+                }
                 room->Destroy();
                 Network::Shutdown();
                 return 0;
@@ -203,6 +326,10 @@ int main(int argc, char** argv) {
             announce_session->Stop();
         }
         announce_session.reset();
+        // Save the ban list
+        if (!ban_list_file.empty()) {
+            SaveBanList(room->GetBanList(), ban_list_file);
+        }
         room->Destroy();
     }
     Network::Shutdown();

src/network/CMakeLists.txt

@@ -7,8 +7,10 @@ add_library(network STATIC
     room.h
     room_member.cpp
     room_member.h
+    verify_user.cpp
+    verify_user.h
 )
 
 create_target_directory_groups(network)
 
-target_link_libraries(network PRIVATE common enet)
+target_link_libraries(network PRIVATE common cpp-jwt enet)

src/network/packet.h

@@ -126,7 +126,7 @@ Packet& Packet::operator>>(std::vector<T>& out_data) {
 
     // Then extract the data
     for (std::size_t i = 0; i < out_data.size(); ++i) {
-        T character = 0;
+        T character;
         *this >> character;
         out_data[i] = character;
     }
@@ -136,7 +136,7 @@ Packet& Packet::operator>>(std::vector<T>& out_data) {
 template <typename T, std::size_t S>
 Packet& Packet::operator>>(std::array<T, S>& out_data) {
     for (std::size_t i = 0; i < out_data.size(); ++i) {
-        T character = 0;
+        T character;
         *this >> character;
         out_data[i] = character;
     }

src/network/room.cpp

@@ -7,12 +7,14 @@
 #include <iomanip>
 #include <mutex>
 #include <random>
+#include <regex>
 #include <sstream>
 #include <thread>
 #include "common/logging/log.h"
 #include "enet/enet.h"
 #include "network/packet.h"
 #include "network/room.h"
+#include "network/verify_user.h"
 
 namespace Network {
 
@@ -27,25 +29,38 @@ public:
     std::atomic<State> state{State::Closed}; ///< Current state of the room.
     RoomInformation room_information;        ///< Information about this room.
 
+    std::string verify_UID;              ///< A GUID which may be used for verfication.
+    mutable std::mutex verify_UID_mutex; ///< Mutex for verify_UID
+
     std::string password; ///< The password required to connect to this room.
 
     struct Member {
-        std::string nickname;   ///< The nickname of the member.
+        std::string nickname;        ///< The nickname of the member.
-        GameInfo game_info;     ///< The current game of the member
+        std::string console_id_hash; ///< A hash of the console ID of the member.
-        MacAddress mac_address; ///< The assigned mac address of the member.
+        GameInfo game_info;          ///< The current game of the member
-        ENetPeer* peer;         ///< The remote peer.
+        MacAddress mac_address;      ///< The assigned mac address of the member.
+        /// Data of the user, often including authenticated forum username.
+        VerifyUser::UserData user_data;
+        ENetPeer* peer; ///< The remote peer.
     };
     using MemberList = std::vector<Member>;
     MemberList members;              ///< Information about the members of this room
     mutable std::mutex member_mutex; ///< Mutex for locking the members list
     /// This should be a std::shared_mutex as soon as C++17 is supported
 
+    UsernameBanList username_ban_list; ///< List of banned usernames
+    IPBanList ip_ban_list;             ///< List of banned IP addresses
+    mutable std::mutex ban_list_mutex; ///< Mutex for the ban lists
+
     RoomImpl()
         : random_gen(std::random_device()()), NintendoOUI{0x00, 0x1F, 0x32, 0x00, 0x00, 0x00} {}
 
     /// Thread that receives and dispatches network packets
     std::unique_ptr<std::thread> room_thread;
 
+    /// Verification backend of the room
+    std::unique_ptr<VerifyUser::Backend> verify_backend;
+
     /// Thread function that will receive and dispatch messages until the room is destroyed.
     void ServerLoop();
     void StartLoop();
@@ -57,6 +72,30 @@ public:
      */
     void HandleJoinRequest(const ENetEvent* event);
 
+    /**
+     * Parses and answers a kick request from a client.
+     * Validates the permissions and that the given user exists and then kicks the member.
+     */
+    void HandleModKickPacket(const ENetEvent* event);
+
+    /**
+     * Parses and answers a ban request from a client.
+     * Validates the permissions and bans the user (by forum username or IP).
+     */
+    void HandleModBanPacket(const ENetEvent* event);
+
+    /**
+     * Parses and answers a unban request from a client.
+     * Validates the permissions and unbans the address.
+     */
+    void HandleModUnbanPacket(const ENetEvent* event);
+
+    /**
+     * Parses and answers a get ban list request from a client.
+     * Validates the permissions and returns the ban list.
+     */
+    void HandleModGetBanListPacket(const ENetEvent* event);
+
     /**
      * Returns whether the nickname is valid, ie. isn't already taken by someone else in the room.
      */
@@ -68,6 +107,22 @@ public:
      */
     bool IsValidMacAddress(const MacAddress& address) const;
 
+    /**
+     * Returns whether the console ID (hash) is valid, ie. isn't already taken by someone else in
+     * the room.
+     */
+    bool IsValidConsoleId(const std::string& console_id_hash) const;
+
+    /**
+     * Returns whether a user has mod permissions.
+     */
+    bool HasModPermission(const ENetPeer* client) const;
+
+    /**
+     * Sends a ID_ROOM_IS_FULL message telling the client that the room is full.
+     */
+    void SendRoomIsFull(ENetPeer* client);
+
     /**
      * Sends a ID_ROOM_NAME_COLLISION message telling the client that the name is invalid.
      */
@@ -78,6 +133,12 @@ public:
      */
     void SendMacCollision(ENetPeer* client);
 
+    /**
+     * Sends a IdConsoleIdCollison message telling the client that another member with the same
+     * console ID exists.
+     */
+    void SendConsoleIdCollision(ENetPeer* client);
+
     /**
      * Sends a ID_ROOM_VERSION_MISMATCH message telling the client that the version is invalid.
      */
@@ -94,17 +155,56 @@ public:
      */
     void SendJoinSuccess(ENetPeer* client, MacAddress mac_address);
 
+    /**
+     * Notifies the member that its connection attempt was successful,
+     * and it is now part of the room, and it has been granted mod permissions.
+     */
+    void SendJoinSuccessAsMod(ENetPeer* client, MacAddress mac_address);
+
+    /**
+     * Sends a IdHostKicked message telling the client that they have been kicked.
+     */
+    void SendUserKicked(ENetPeer* client);
+
+    /**
+     * Sends a IdHostBanned message telling the client that they have been banned.
+     */
+    void SendUserBanned(ENetPeer* client);
+
+    /**
+     * Sends a IdModPermissionDenied message telling the client that they do not have mod
+     * permission.
+     */
+    void SendModPermissionDenied(ENetPeer* client);
+
+    /**
+     * Sends a IdModNoSuchUser message telling the client that the given user could not be found.
+     */
+    void SendModNoSuchUser(ENetPeer* client);
+
+    /**
+     * Sends the ban list in response to a client's request for getting ban list.
+     */
+    void SendModBanListResponse(ENetPeer* client);
+
     /**
      * Notifies the members that the room is closed,
      */
     void SendCloseMessage();
 
+    /**
+     * Sends a system message to all the connected clients.
+     */
+    void SendStatusMessage(StatusMessageTypes type, const std::string& nickname,
+                           const std::string& username);
+
     /**
      * Sends the information about the room, along with the list of members
      * to every connected client in the room.
      * The packet has the structure:
      * <MessageID>ID_ROOM_INFORMATION
      * <String> room_name
+     * <String> room_description
      * <u32> member_slots: The max number of clients allowed in this room
      * <String> uid
      * <u16> port
@@ -145,11 +245,6 @@ public:
      * to all other clients.
      */
     void HandleClientDisconnection(ENetPeer* client);
-
-    /**
-     * Creates a random ID in the form 12345678-1234-1234-1234-123456789012
-     */
-    void CreateUniqueID();
 };
 
 // RoomImpl
@@ -172,6 +267,19 @@ void Room::RoomImpl::ServerLoop() {
                 case IdChatMessage:
                     HandleChatPacket(&event);
                     break;
+                // Moderation
+                case IdModKick:
+                    HandleModKickPacket(&event);
+                    break;
+                case IdModBan:
+                    HandleModBanPacket(&event);
+                    break;
+                case IdModUnban:
+                    HandleModUnbanPacket(&event);
+                    break;
+                case IdModGetBanList:
+                    HandleModGetBanListPacket(&event);
+                    break;
                 }
                 enet_packet_destroy(event.packet);
                 break;
@@ -193,12 +301,22 @@ void Room::RoomImpl::StartLoop() {
 }
 
 void Room::RoomImpl::HandleJoinRequest(const ENetEvent* event) {
+    {
+        std::lock_guard<std::mutex> lock(member_mutex);
+        if (members.size() >= room_information.member_slots) {
+            SendRoomIsFull(event->peer);
+            return;
+        }
+    }
     Packet packet;
     packet.Append(event->packet->data, event->packet->dataLength);
     packet.IgnoreBytes(sizeof(u8)); // Ignore the message type
     std::string nickname;
     packet >> nickname;
 
+    std::string console_id_hash;
+    packet >> console_id_hash;
+
     MacAddress preferred_mac;
     packet >> preferred_mac;
 
@@ -208,6 +326,9 @@ void Room::RoomImpl::HandleJoinRequest(const ENetEvent* event) {
     std::string pass;
     packet >> pass;
 
+    std::string token;
+    packet >> token;
+
     if (pass != password) {
         SendWrongPassword(event->peer);
         return;
@@ -229,6 +350,11 @@ void Room::RoomImpl::HandleJoinRequest(const ENetEvent* event) {
         preferred_mac = GenerateMacAddress();
     }
 
+    if (!IsValidConsoleId(console_id_hash)) {
+        SendConsoleIdCollision(event->peer);
+        return;
+    }
+
     if (client_version != network_version) {
         SendVersionMismatch(event->peer);
         return;
@@ -237,9 +363,43 @@ void Room::RoomImpl::HandleJoinRequest(const ENetEvent* event) {
     // At this point the client is ready to be added to the room.
     Member member{};
     member.mac_address = preferred_mac;
+    member.console_id_hash = console_id_hash;
     member.nickname = nickname;
     member.peer = event->peer;
 
+    std::string uid;
+    {
+        std::lock_guard<std::mutex> lock(verify_UID_mutex);
+        uid = verify_UID;
+    }
+    member.user_data = verify_backend->LoadUserData(uid, token);
+
+    {
+        std::lock_guard<std::mutex> lock(ban_list_mutex);
+
+        // Check username ban
+        if (!member.user_data.username.empty() &&
+            std::find(username_ban_list.begin(), username_ban_list.end(),
+                      member.user_data.username) != username_ban_list.end()) {
+
+            SendUserBanned(event->peer);
+            return;
+        }
+
+        // Check IP ban
+        char ip_raw[256];
+        enet_address_get_host_ip(&event->peer->address, ip_raw, sizeof(ip_raw) - 1);
+        std::string ip = ip_raw;
+
+        if (std::find(ip_ban_list.begin(), ip_ban_list.end(), ip) != ip_ban_list.end()) {
+            SendUserBanned(event->peer);
+            return;
+        }
+    }
+
+    // Notify everyone that the user has joined.
+    SendStatusMessage(IdMemberJoin, member.nickname, member.user_data.username);
+
     {
         std::lock_guard<std::mutex> lock(member_mutex);
         members.push_back(std::move(member));
@@ -247,12 +407,167 @@ void Room::RoomImpl::HandleJoinRequest(const ENetEvent* event) {
 
     // Notify everyone that the room information has changed.
     BroadcastRoomInformation();
-    SendJoinSuccess(event->peer, preferred_mac);
+    if (HasModPermission(event->peer)) {
+        SendJoinSuccessAsMod(event->peer, preferred_mac);
+    } else {
+        SendJoinSuccess(event->peer, preferred_mac);
+    }
+}
+
+void Room::RoomImpl::HandleModKickPacket(const ENetEvent* event) {
+    if (!HasModPermission(event->peer)) {
+        SendModPermissionDenied(event->peer);
+        return;
+    }
+
+    Packet packet;
+    packet.Append(event->packet->data, event->packet->dataLength);
+    packet.IgnoreBytes(sizeof(u8)); // Ignore the message type
+
+    std::string nickname;
+    packet >> nickname;
+
+    std::string username;
+    {
+        std::lock_guard<std::mutex> lock(member_mutex);
+        const auto target_member =
+            std::find_if(members.begin(), members.end(),
+                         [&nickname](const auto& member) { return member.nickname == nickname; });
+        if (target_member == members.end()) {
+            SendModNoSuchUser(event->peer);
+            return;
+        }
+
+        // Notify the kicked member
+        SendUserKicked(target_member->peer);
+
+        username = target_member->user_data.username;
+
+        enet_peer_disconnect(target_member->peer, 0);
+        members.erase(target_member);
+    }
+
+    // Announce the change to all clients.
+    SendStatusMessage(IdMemberKicked, nickname, username);
+    BroadcastRoomInformation();
+}
+
+void Room::RoomImpl::HandleModBanPacket(const ENetEvent* event) {
+    if (!HasModPermission(event->peer)) {
+        SendModPermissionDenied(event->peer);
+        return;
+    }
+
+    Packet packet;
+    packet.Append(event->packet->data, event->packet->dataLength);
+    packet.IgnoreBytes(sizeof(u8)); // Ignore the message type
+
+    std::string nickname;
+    packet >> nickname;
+
+    std::string username;
+    std::string ip;
+
+    {
+        std::lock_guard<std::mutex> lock(member_mutex);
+        const auto target_member =
+            std::find_if(members.begin(), members.end(),
+                         [&nickname](const auto& member) { return member.nickname == nickname; });
+        if (target_member == members.end()) {
+            SendModNoSuchUser(event->peer);
+            return;
+        }
+
+        // Notify the banned member
+        SendUserBanned(target_member->peer);
+
+        nickname = target_member->nickname;
+        username = target_member->user_data.username;
+
+        char ip_raw[256];
+        enet_address_get_host_ip(&target_member->peer->address, ip_raw, sizeof(ip_raw) - 1);
+        ip = ip_raw;
+
+        enet_peer_disconnect(target_member->peer, 0);
+        members.erase(target_member);
+    }
+
+    {
+        std::lock_guard<std::mutex> lock(ban_list_mutex);
+
+        if (!username.empty()) {
+            // Ban the forum username
+            if (std::find(username_ban_list.begin(), username_ban_list.end(), username) ==
+                username_ban_list.end()) {
+
+                username_ban_list.emplace_back(username);
+            }
+        }
+
+        // Ban the member's IP as well
+        if (std::find(ip_ban_list.begin(), ip_ban_list.end(), ip) == ip_ban_list.end()) {
+            ip_ban_list.emplace_back(ip);
+        }
+    }
+
+    // Announce the change to all clients.
+    SendStatusMessage(IdMemberBanned, nickname, username);
+    BroadcastRoomInformation();
+}
+
+void Room::RoomImpl::HandleModUnbanPacket(const ENetEvent* event) {
+    if (!HasModPermission(event->peer)) {
+        SendModPermissionDenied(event->peer);
+        return;
+    }
+
+    Packet packet;
+    packet.Append(event->packet->data, event->packet->dataLength);
+    packet.IgnoreBytes(sizeof(u8)); // Ignore the message type
+
+    std::string address;
+    packet >> address;
+
+    bool unbanned = false;
+    {
+        std::lock_guard<std::mutex> lock(ban_list_mutex);
+
+        auto it = std::find(username_ban_list.begin(), username_ban_list.end(), address);
+        if (it != username_ban_list.end()) {
+            unbanned = true;
+            username_ban_list.erase(it);
+        }
+
+        it = std::find(ip_ban_list.begin(), ip_ban_list.end(), address);
+        if (it != ip_ban_list.end()) {
+            unbanned = true;
+            ip_ban_list.erase(it);
+        }
+    }
+
+    if (unbanned) {
+        SendStatusMessage(IdAddressUnbanned, address, "");
+    } else {
+        SendModNoSuchUser(event->peer);
+    }
+}
+
+void Room::RoomImpl::HandleModGetBanListPacket(const ENetEvent* event) {
+    if (!HasModPermission(event->peer)) {
+        SendModPermissionDenied(event->peer);
+        return;
+    }
+
+    SendModBanListResponse(event->peer);
 }
 
 bool Room::RoomImpl::IsValidNickname(const std::string& nickname) const {
-    // A nickname is valid if it is not already taken by anybody else in the room.
+    // A nickname is valid if it matches the regex and is not already taken by anybody else in the
-    // TODO(B3N30): Check for empty names, spaces, etc.
+    // room.
+    const std::regex nickname_regex("^[ a-zA-Z0-9._-]{4,20}$");
+    if (!std::regex_match(nickname, nickname_regex))
+        return false;
+
     std::lock_guard<std::mutex> lock(member_mutex);
     return std::all_of(members.begin(), members.end(),
                        [&nickname](const auto& member) { return member.nickname != nickname; });
@@ -265,6 +580,35 @@ bool Room::RoomImpl::IsValidMacAddress(const MacAddress& address) const {
                        [&address](const auto& member) { return member.mac_address != address; });
 }
 
+bool Room::RoomImpl::IsValidConsoleId(const std::string& console_id_hash) const {
+    // A Console ID is valid if it is not already taken by anybody else in the room.
+    std::lock_guard<std::mutex> lock(member_mutex);
+    return std::all_of(members.begin(), members.end(), [&console_id_hash](const auto& member) {
+        return member.console_id_hash != console_id_hash;
+    });
+}
+
+bool Room::RoomImpl::HasModPermission(const ENetPeer* client) const {
+    std::lock_guard<std::mutex> lock(member_mutex);
+    const auto sending_member =
+        std::find_if(members.begin(), members.end(),
+                     [client](const auto& member) { return member.peer == client; });
+    if (sending_member == members.end()) {
+        return false;
+    }
+    if (room_information.enable_citra_mods &&
+        sending_member->user_data.moderator) { // Community moderator
+
+        return true;
+    }
+    if (!room_information.host_username.empty() &&
+        sending_member->user_data.username == room_information.host_username) { // Room host
+
+        return true;
+    }
+    return false;
+}
+
 void Room::RoomImpl::SendNameCollision(ENetPeer* client) {
     Packet packet;
     packet << static_cast<u8>(IdNameCollision);
@@ -285,6 +629,16 @@ void Room::RoomImpl::SendMacCollision(ENetPeer* client) {
     enet_host_flush(server);
 }
 
+void Room::RoomImpl::SendConsoleIdCollision(ENetPeer* client) {
+    Packet packet;
+    packet << static_cast<u8>(IdConsoleIdCollision);
+
+    ENetPacket* enet_packet =
+        enet_packet_create(packet.GetData(), packet.GetDataSize(), ENET_PACKET_FLAG_RELIABLE);
+    enet_peer_send(client, 0, enet_packet);
+    enet_host_flush(server);
+}
+
 void Room::RoomImpl::SendWrongPassword(ENetPeer* client) {
     Packet packet;
     packet << static_cast<u8>(IdWrongPassword);
@@ -295,6 +649,16 @@ void Room::RoomImpl::SendWrongPassword(ENetPeer* client) {
     enet_host_flush(server);
 }
 
+void Room::RoomImpl::SendRoomIsFull(ENetPeer* client) {
+    Packet packet;
+    packet << static_cast<u8>(IdRoomIsFull);
+
+    ENetPacket* enet_packet =
+        enet_packet_create(packet.GetData(), packet.GetDataSize(), ENET_PACKET_FLAG_RELIABLE);
+    enet_peer_send(client, 0, enet_packet);
+    enet_host_flush(server);
+}
+
 void Room::RoomImpl::SendVersionMismatch(ENetPeer* client) {
     Packet packet;
     packet << static_cast<u8>(IdVersionMismatch);
@@ -316,6 +680,71 @@ void Room::RoomImpl::SendJoinSuccess(ENetPeer* client, MacAddress mac_address) {
     enet_host_flush(server);
 }
 
+void Room::RoomImpl::SendJoinSuccessAsMod(ENetPeer* client, MacAddress mac_address) {
+    Packet packet;
+    packet << static_cast<u8>(IdJoinSuccessAsMod);
+    packet << mac_address;
+    ENetPacket* enet_packet =
+        enet_packet_create(packet.GetData(), packet.GetDataSize(), ENET_PACKET_FLAG_RELIABLE);
+    enet_peer_send(client, 0, enet_packet);
+    enet_host_flush(server);
+}
+
+void Room::RoomImpl::SendUserKicked(ENetPeer* client) {
+    Packet packet;
+    packet << static_cast<u8>(IdHostKicked);
+
+    ENetPacket* enet_packet =
+        enet_packet_create(packet.GetData(), packet.GetDataSize(), ENET_PACKET_FLAG_RELIABLE);
+    enet_peer_send(client, 0, enet_packet);
+    enet_host_flush(server);
+}
+
+void Room::RoomImpl::SendUserBanned(ENetPeer* client) {
+    Packet packet;
+    packet << static_cast<u8>(IdHostBanned);
+
+    ENetPacket* enet_packet =
+        enet_packet_create(packet.GetData(), packet.GetDataSize(), ENET_PACKET_FLAG_RELIABLE);
+    enet_peer_send(client, 0, enet_packet);
+    enet_host_flush(server);
+}
+
+void Room::RoomImpl::SendModPermissionDenied(ENetPeer* client) {
+    Packet packet;
+    packet << static_cast<u8>(IdModPermissionDenied);
+
+    ENetPacket* enet_packet =
+        enet_packet_create(packet.GetData(), packet.GetDataSize(), ENET_PACKET_FLAG_RELIABLE);
+    enet_peer_send(client, 0, enet_packet);
+    enet_host_flush(server);
+}
+
+void Room::RoomImpl::SendModNoSuchUser(ENetPeer* client) {
+    Packet packet;
+    packet << static_cast<u8>(IdModNoSuchUser);
+
+    ENetPacket* enet_packet =
+        enet_packet_create(packet.GetData(), packet.GetDataSize(), ENET_PACKET_FLAG_RELIABLE);
+    enet_peer_send(client, 0, enet_packet);
+    enet_host_flush(server);
+}
+
+void Room::RoomImpl::SendModBanListResponse(ENetPeer* client) {
+    Packet packet;
+    packet << static_cast<u8>(IdModBanListResponse);
+    {
+        std::lock_guard<std::mutex> lock(ban_list_mutex);
+        packet << username_ban_list;
+        packet << ip_ban_list;
+    }
+
+    ENetPacket* enet_packet =
+        enet_packet_create(packet.GetData(), packet.GetDataSize(), ENET_PACKET_FLAG_RELIABLE);
+    enet_peer_send(client, 0, enet_packet);
+    enet_host_flush(server);
+}
+
 void Room::RoomImpl::SendCloseMessage() {
     Packet packet;
     packet << static_cast<u8>(IdCloseRoom);
@@ -333,14 +762,33 @@ void Room::RoomImpl::SendCloseMessage() {
     }
 }
 
+void Room::RoomImpl::SendStatusMessage(StatusMessageTypes type, const std::string& nickname,
+                                       const std::string& username) {
+    Packet packet;
+    packet << static_cast<u8>(IdStatusMessage);
+    packet << static_cast<u8>(type);
+    packet << nickname;
+    packet << username;
+    std::lock_guard<std::mutex> lock(member_mutex);
+    if (!members.empty()) {
+        ENetPacket* enet_packet =
+            enet_packet_create(packet.GetData(), packet.GetDataSize(), ENET_PACKET_FLAG_RELIABLE);
+        for (auto& member : members) {
+            enet_peer_send(member.peer, 0, enet_packet);
+        }
+    }
+    enet_host_flush(server);
+}
+
 void Room::RoomImpl::BroadcastRoomInformation() {
     Packet packet;
     packet << static_cast<u8>(IdRoomInformation);
     packet << room_information.name;
+    packet << room_information.description;
     packet << room_information.member_slots;
-    packet << room_information.uid;
     packet << room_information.port;
     packet << room_information.preferred_game;
+    packet << room_information.host_username;
 
     packet << static_cast<u32>(members.size());
     {
@@ -350,6 +798,9 @@ void Room::RoomImpl::BroadcastRoomInformation() {
             packet << member.mac_address;
             packet << member.game_info.name;
             packet << member.game_info.id;
+            packet << member.user_data.username;
+            packet << member.user_data.display_name;
+            packet << member.user_data.avatar_url;
         }
     }
 
@@ -442,6 +893,7 @@ void Room::RoomImpl::HandleChatPacket(const ENetEvent* event) {
     Packet out_packet;
     out_packet << static_cast<u8>(IdChatMessage);
     out_packet << sending_member->nickname;
+    out_packet << sending_member->user_data.username;
     out_packet << message;
 
     ENetPacket* enet_packet = enet_packet_create(out_packet.GetData(), out_packet.GetDataSize(),
@@ -485,41 +937,37 @@ void Room::RoomImpl::HandleGameNamePacket(const ENetEvent* event) {
 
 void Room::RoomImpl::HandleClientDisconnection(ENetPeer* client) {
     // Remove the client from the members list.
+    std::string nickname, username;
     {
         std::lock_guard<std::mutex> lock(member_mutex);
-        members.erase(
+        auto member = std::find_if(members.begin(), members.end(), [client](const Member& member) {
-            std::remove_if(members.begin(), members.end(),
+            return member.peer == client;
-                           [client](const Member& member) { return member.peer == client; }),
+        });
-            members.end());
+        if (member != members.end()) {
+            nickname = member->nickname;
+            username = member->user_data.username;
+            members.erase(member);
+        }
     }
 
     // Announce the change to all clients.
     enet_peer_disconnect(client, 0);
+    if (!nickname.empty())
+        SendStatusMessage(IdMemberLeave, nickname, username);
     BroadcastRoomInformation();
 }
 
-void Room::RoomImpl::CreateUniqueID() {
-    std::uniform_int_distribution<> dis(0, 9999);
-    std::ostringstream stream;
-    stream << std::setfill('0') << std::setw(4) << dis(random_gen);
-    stream << std::setfill('0') << std::setw(4) << dis(random_gen) << "-";
-    stream << std::setfill('0') << std::setw(4) << dis(random_gen) << "-";
-    stream << std::setfill('0') << std::setw(4) << dis(random_gen) << "-";
-    stream << std::setfill('0') << std::setw(4) << dis(random_gen) << "-";
-    stream << std::setfill('0') << std::setw(4) << dis(random_gen);
-    stream << std::setfill('0') << std::setw(4) << dis(random_gen);
-    stream << std::setfill('0') << std::setw(4) << dis(random_gen);
-    room_information.uid = stream.str();
-}
-
 // Room
 Room::Room() : room_impl{std::make_unique<RoomImpl>()} {}
 
 Room::~Room() = default;
 
-bool Room::Create(const std::string& name, const std::string& server_address, u16 server_port,
+bool Room::Create(const std::string& name, const std::string& description,
-                  const std::string& password, const u32 max_connections,
+                  const std::string& server_address, u16 server_port, const std::string& password,
-                  const std::string& preferred_game, u64 preferred_game_id) {
+                  const u32 max_connections, const std::string& host_username,
+                  const std::string& preferred_game, u64 preferred_game_id,
+                  std::unique_ptr<VerifyUser::Backend> verify_backend,
+                  const Room::BanList& ban_list, bool enable_citra_mods) {
     ENetAddress address;
     address.host = ENET_HOST_ANY;
     if (!server_address.empty()) {
@@ -527,19 +975,26 @@ bool Room::Create(const std::string& name, const std::string& server_address, u1
     }
     address.port = server_port;
 
-    room_impl->server = enet_host_create(&address, max_connections, NumChannels, 0, 0);
+    // In order to send the room is full message to the connecting client, we need to leave one
+    // slot open so enet won't reject the incoming connection without telling us
+    room_impl->server = enet_host_create(&address, max_connections + 1, NumChannels, 0, 0);
     if (!room_impl->server) {
         return false;
     }
     room_impl->state = State::Open;
 
     room_impl->room_information.name = name;
+    room_impl->room_information.description = description;
     room_impl->room_information.member_slots = max_connections;
     room_impl->room_information.port = server_port;
     room_impl->room_information.preferred_game = preferred_game;
     room_impl->room_information.preferred_game_id = preferred_game_id;
+    room_impl->room_information.host_username = host_username;
+    room_impl->room_information.enable_citra_mods = enable_citra_mods;
     room_impl->password = password;
-    room_impl->CreateUniqueID();
+    room_impl->verify_backend = std::move(verify_backend);
+    room_impl->username_ban_list = ban_list.first;
+    room_impl->ip_ban_list = ban_list.second;
 
     room_impl->StartLoop();
     return true;
@@ -553,12 +1008,25 @@ const RoomInformation& Room::GetRoomInformation() const {
     return room_impl->room_information;
 }
 
+std::string Room::GetVerifyUID() const {
+    std::lock_guard<std::mutex> lock(room_impl->verify_UID_mutex);
+    return room_impl->verify_UID;
+}
+
+Room::BanList Room::GetBanList() const {
+    std::lock_guard<std::mutex> lock(room_impl->ban_list_mutex);
+    return {room_impl->username_ban_list, room_impl->ip_ban_list};
+}
+
 std::vector<Room::Member> Room::GetRoomMemberList() const {
     std::vector<Room::Member> member_list;
     std::lock_guard<std::mutex> lock(room_impl->member_mutex);
     for (const auto& member_impl : room_impl->members) {
         Member member;
         member.nickname = member_impl.nickname;
+        member.username = member_impl.user_data.username;
+        member.display_name = member_impl.user_data.display_name;
+        member.avatar_url = member_impl.user_data.avatar_url;
         member.mac_address = member_impl.mac_address;
         member.game_info = member_impl.game_info;
         member_list.push_back(member);
@@ -570,6 +1038,11 @@ bool Room::HasPassword() const {
     return !room_impl->password.empty();
 }
 
+void Room::SetVerifyUID(const std::string& uid) {
+    std::lock_guard<std::mutex> lock(room_impl->verify_UID_mutex);
+    room_impl->verify_UID = uid;
+}
+
 void Room::Destroy() {
     room_impl->state = State::Closed;
     room_impl->room_thread->join();

src/network/room.h

@@ -9,10 +9,11 @@
 #include <string>
 #include <vector>
 #include "common/common_types.h"
+#include "network/verify_user.h"
 
 namespace Network {
 
-constexpr u32 network_version = 3; ///< The version of this Room and RoomMember
+constexpr u32 network_version = 4; ///< The version of this Room and RoomMember
 
 constexpr u16 DefaultRoomPort = 24872;
 
@@ -25,11 +26,13 @@ constexpr std::size_t NumChannels = 1; // Number of channels used for the connec
 
 struct RoomInformation {
     std::string name;           ///< Name of the server
+    std::string description;    ///< Server description
     u32 member_slots;           ///< Maximum number of members in this room
-    std::string uid;            ///< The unique ID of the room
     u16 port;                   ///< The port of this room
     std::string preferred_game; ///< Game to advertise that you want to play
     u64 preferred_game_id;      ///< Title ID for the advertised game
+    std::string host_username;  ///< Forum username of the host
+    bool enable_citra_mods;     ///< Allow Citra Moderators to moderate on this room
 };
 
 struct GameInfo {
@@ -57,7 +60,31 @@ enum RoomMessageTypes : u8 {
     IdMacCollision,
     IdVersionMismatch,
     IdWrongPassword,
-    IdCloseRoom
+    IdCloseRoom,
+    IdRoomIsFull,
+    IdConsoleIdCollision,
+    IdStatusMessage,
+    IdHostKicked,
+    IdHostBanned,
+    /// Moderation requests
+    IdModKick,
+    IdModBan,
+    IdModUnban,
+    IdModGetBanList,
+    // Moderation responses
+    IdModBanListResponse,
+    IdModPermissionDenied,
+    IdModNoSuchUser,
+    IdJoinSuccessAsMod,
+};
+
+/// Types of system status messages
+enum StatusMessageTypes : u8 {
+    IdMemberJoin = 1,  ///< Member joining
+    IdMemberLeave,     ///< Member leaving
+    IdMemberKicked,    ///< A member is kicked from the room
+    IdMemberBanned,    ///< A member is banned from the room
+    IdAddressUnbanned, ///< A username / ip address is unbanned from the room
 };
 
 /// This is what a server [person creating a server] would use.
@@ -69,9 +96,12 @@ public:
     };
 
     struct Member {
-        std::string nickname;   ///< The nickname of the member.
+        std::string nickname;     ///< The nickname of the member.
-        GameInfo game_info;     ///< The current game of the member
+        std::string username;     ///< The web services username of the member. Can be empty.
-        MacAddress mac_address; ///< The assigned mac address of the member.
+        std::string display_name; ///< The web services display name of the member. Can be empty.
+        std::string avatar_url;   ///< Url to the member's avatar. Can be empty.
+        GameInfo game_info;       ///< The current game of the member
+        MacAddress mac_address;   ///< The assigned mac address of the member.
     };
 
     Room();
@@ -87,6 +117,11 @@ public:
      */
     const RoomInformation& GetRoomInformation() const;
 
+    /**
+     * Gets the verify UID of this room.
+     */
+    std::string GetVerifyUID() const;
+
     /**
      * Gets a list of the mbmers connected to the room.
      */
@@ -97,14 +132,33 @@ public:
      */
     bool HasPassword() const;
 
+    using UsernameBanList = std::vector<std::string>;
+    using IPBanList = std::vector<std::string>;
+
+    using BanList = std::pair<UsernameBanList, IPBanList>;
+
     /**
      * Creates the socket for this room. Will bind to default address if
      * server is empty string.
      */
-    bool Create(const std::string& name, const std::string& server = "",
+    bool Create(const std::string& name, const std::string& description = "",
-                u16 server_port = DefaultRoomPort, const std::string& password = "",
+                const std::string& server = "", u16 server_port = DefaultRoomPort,
+                const std::string& password = "",
                 const u32 max_connections = MaxConcurrentConnections,
-                const std::string& preferred_game = "", u64 preferred_game_id = 0);
+                const std::string& host_username = "", const std::string& preferred_game = "",
+                u64 preferred_game_id = 0,
+                std::unique_ptr<VerifyUser::Backend> verify_backend = nullptr,
+                const BanList& ban_list = {}, bool enable_citra_mods = false);
+
+    /**
+     * Sets the verification GUID of the room.
+     */
+    void SetVerifyUID(const std::string& uid);
+
+    /**
+     * Gets the ban list (including banned forum usernames and IPs) of the room.
+     */
+    BanList GetBanList() const;
 
     /**
      * Destroys the socket

src/network/room_member.cpp

@@ -31,9 +31,14 @@ public:
 
     std::atomic<State> state{State::Idle}; ///< Current state of the RoomMember.
     void SetState(const State new_state);
+    void SetError(const Error new_error);
     bool IsConnected() const;
 
-    std::string nickname;   ///< The nickname of this member.
+    std::string nickname; ///< The nickname of this member.
+
+    std::string username;              ///< The username of this member.
+    mutable std::mutex username_mutex; ///< Mutex for locking username.
+
     MacAddress mac_address; ///< The mac_address of this member.
 
     std::mutex network_mutex; ///< Mutex that controls access to the `client` variable.
@@ -54,8 +59,11 @@ public:
     private:
         CallbackSet<WifiPacket> callback_set_wifi_packet;
         CallbackSet<ChatEntry> callback_set_chat_messages;
+        CallbackSet<StatusMessageEntry> callback_set_status_messages;
         CallbackSet<RoomInformation> callback_set_room_information;
         CallbackSet<State> callback_set_state;
+        CallbackSet<Error> callback_set_error;
+        CallbackSet<Room::BanList> callback_set_ban_list;
     };
     Callbacks callbacks; ///< All CallbackSets to all events
 
@@ -73,13 +81,14 @@ public:
      * Sends a request to the server, asking for permission to join a room with the specified
      * nickname and preferred mac.
      * @params nickname The desired nickname.
+     * @params console_id_hash A hash of the Console ID.
      * @params preferred_mac The preferred MAC address to use in the room, the NoPreferredMac tells
      * @params password The password for the room
      * the server to assign one for us.
      */
-    void SendJoinRequest(const std::string& nickname,
+    void SendJoinRequest(const std::string& nickname, const std::string& console_id_hash,
                          const MacAddress& preferred_mac = NoPreferredMac,
-                         const std::string& password = "");
+                         const std::string& password = "", const std::string& token = "");
 
     /**
      * Extracts a MAC Address from a received ENet packet.
@@ -104,6 +113,19 @@ public:
      */
     void HandleChatPacket(const ENetEvent* event);
 
+    /**
+     * Extracts a system message entry from a received ENet packet and adds it to the system message
+     * queue.
+     * @param event The ENet event that was received.
+     */
+    void HandleStatusMessagePacket(const ENetEvent* event);
+
+    /**
+     * Extracts a ban list request response from a received ENet packet.
+     * @param event The ENet event that was received.
+     */
+    void HandleModBanListResponsePacket(const ENetEvent* event);
+
     /**
      * Disconnects the RoomMember from the Room
      */
@@ -124,8 +146,12 @@ void RoomMember::RoomMemberImpl::SetState(const State new_state) {
     }
 }
 
+void RoomMember::RoomMemberImpl::SetError(const Error new_error) {
+    Invoke<Error>(new_error);
+}
+
 bool RoomMember::RoomMemberImpl::IsConnected() const {
-    return state == State::Joining || state == State::Joined;
+    return state == State::Joining || state == State::Joined || state == State::Moderator;
 }
 
 void RoomMember::RoomMemberImpl::MemberLoop() {
@@ -143,37 +169,78 @@ void RoomMember::RoomMemberImpl::MemberLoop() {
                 case IdChatMessage:
                     HandleChatPacket(&event);
                     break;
+                case IdStatusMessage:
+                    HandleStatusMessagePacket(&event);
+                    break;
                 case IdRoomInformation:
                     HandleRoomInformationPacket(&event);
                     break;
                 case IdJoinSuccess:
+                case IdJoinSuccessAsMod:
                     // The join request was successful, we are now in the room.
                     // If we joined successfully, there must be at least one client in the room: us.
                     ASSERT_MSG(member_information.size() > 0,
                                "We have not yet received member information.");
                     HandleJoinPacket(&event); // Get the MAC Address for the client
-                    SetState(State::Joined);
+                    if (event.packet->data[0] == IdJoinSuccessAsMod) {
+                        SetState(State::Moderator);
+                    } else {
+                        SetState(State::Joined);
+                    }
+                    break;
+                case IdModBanListResponse:
+                    HandleModBanListResponsePacket(&event);
+                    break;
+                case IdRoomIsFull:
+                    SetState(State::Idle);
+                    SetError(Error::RoomIsFull);
                     break;
                 case IdNameCollision:
-                    SetState(State::NameCollision);
+                    SetState(State::Idle);
+                    SetError(Error::NameCollision);
                     break;
                 case IdMacCollision:
-                    SetState(State::MacCollision);
+                    SetState(State::Idle);
+                    SetError(Error::MacCollision);
+                    break;
+                case IdConsoleIdCollision:
+                    SetState(State::Idle);
+                    SetError(Error::ConsoleIdCollision);
                     break;
                 case IdVersionMismatch:
-                    SetState(State::WrongVersion);
+                    SetState(State::Idle);
+                    SetError(Error::WrongVersion);
                     break;
                 case IdWrongPassword:
-                    SetState(State::WrongPassword);
+                    SetState(State::Idle);
+                    SetError(Error::WrongPassword);
                     break;
                 case IdCloseRoom:
-                    SetState(State::LostConnection);
+                    SetState(State::Idle);
+                    SetError(Error::LostConnection);
+                    break;
+                case IdHostKicked:
+                    SetState(State::Idle);
+                    SetError(Error::HostKicked);
+                    break;
+                case IdHostBanned:
+                    SetState(State::Idle);
+                    SetError(Error::HostBanned);
+                    break;
+                case IdModPermissionDenied:
+                    SetError(Error::PermissionDenied);
+                    break;
+                case IdModNoSuchUser:
+                    SetError(Error::NoSuchUser);
                     break;
                 }
                 enet_packet_destroy(event.packet);
                 break;
             case ENET_EVENT_TYPE_DISCONNECT:
-                SetState(State::LostConnection);
+                if (state == State::Joined || state == State::Moderator) {
+                    SetState(State::Idle);
+                    SetError(Error::LostConnection);
+                }
                 break;
             }
         }
@@ -201,14 +268,18 @@ void RoomMember::RoomMemberImpl::Send(Packet&& packet) {
 }
 
 void RoomMember::RoomMemberImpl::SendJoinRequest(const std::string& nickname,
+                                                 const std::string& console_id_hash,
                                                  const MacAddress& preferred_mac,
-                                                 const std::string& password) {
+                                                 const std::string& password,
+                                                 const std::string& token) {
     Packet packet;
     packet << static_cast<u8>(IdJoinRequest);
     packet << nickname;
+    packet << console_id_hash;
     packet << preferred_mac;
     packet << network_version;
     packet << password;
+    packet << token;
     Send(std::move(packet));
 }
 
@@ -221,14 +292,17 @@ void RoomMember::RoomMemberImpl::HandleRoomInformationPacket(const ENetEvent* ev
 
     RoomInformation info{};
     packet >> info.name;
+    packet >> info.description;
     packet >> info.member_slots;
-    packet >> info.uid;
     packet >> info.port;
     packet >> info.preferred_game;
+    packet >> info.host_username;
     room_information.name = info.name;
+    room_information.description = info.description;
     room_information.member_slots = info.member_slots;
     room_information.port = info.port;
     room_information.preferred_game = info.preferred_game;
+    room_information.host_username = info.host_username;
 
     u32 num_members;
     packet >> num_members;
@@ -239,6 +313,16 @@ void RoomMember::RoomMemberImpl::HandleRoomInformationPacket(const ENetEvent* ev
         packet >> member.mac_address;
         packet >> member.game_info.name;
         packet >> member.game_info.id;
+        packet >> member.username;
+        packet >> member.display_name;
+        packet >> member.avatar_url;
+
+        {
+            std::lock_guard<std::mutex> lock(username_mutex);
+            if (member.nickname == nickname) {
+                username = member.username;
+            }
+        }
     }
     Invoke(room_information);
 }
@@ -252,7 +336,6 @@ void RoomMember::RoomMemberImpl::HandleJoinPacket(const ENetEvent* event) {
 
     // Parse the MAC Address from the packet
     packet >> mac_address;
-    SetState(State::Joined);
 }
 
 void RoomMember::RoomMemberImpl::HandleWifiPackets(const ENetEvent* event) {
@@ -286,10 +369,40 @@ void RoomMember::RoomMemberImpl::HandleChatPacket(const ENetEvent* event) {
 
     ChatEntry chat_entry{};
     packet >> chat_entry.nickname;
+    packet >> chat_entry.username;
     packet >> chat_entry.message;
     Invoke<ChatEntry>(chat_entry);
 }
 
+void RoomMember::RoomMemberImpl::HandleStatusMessagePacket(const ENetEvent* event) {
+    Packet packet;
+    packet.Append(event->packet->data, event->packet->dataLength);
+
+    // Ignore the first byte, which is the message id.
+    packet.IgnoreBytes(sizeof(u8));
+
+    StatusMessageEntry status_message_entry{};
+    u8 type{};
+    packet >> type;
+    status_message_entry.type = static_cast<StatusMessageTypes>(type);
+    packet >> status_message_entry.nickname;
+    packet >> status_message_entry.username;
+    Invoke<StatusMessageEntry>(status_message_entry);
+}
+
+void RoomMember::RoomMemberImpl::HandleModBanListResponsePacket(const ENetEvent* event) {
+    Packet packet;
+    packet.Append(event->packet->data, event->packet->dataLength);
+
+    // Ignore the first byte, which is the message id.
+    packet.IgnoreBytes(sizeof(u8));
+
+    Room::BanList ban_list = {};
+    packet >> ban_list.first;
+    packet >> ban_list.second;
+    Invoke<Room::BanList>(ban_list);
+}
+
 void RoomMember::RoomMemberImpl::Disconnect() {
     member_information.clear();
     room_information.member_slots = 0;
@@ -329,6 +442,12 @@ RoomMember::RoomMemberImpl::Callbacks::Get() {
     return callback_set_state;
 }
 
+template <>
+RoomMember::RoomMemberImpl::CallbackSet<RoomMember::Error>&
+RoomMember::RoomMemberImpl::Callbacks::Get() {
+    return callback_set_error;
+}
+
 template <>
 RoomMember::RoomMemberImpl::CallbackSet<RoomInformation>&
 RoomMember::RoomMemberImpl::Callbacks::Get() {
@@ -340,6 +459,18 @@ RoomMember::RoomMemberImpl::CallbackSet<ChatEntry>& RoomMember::RoomMemberImpl::
     return callback_set_chat_messages;
 }
 
+template <>
+RoomMember::RoomMemberImpl::CallbackSet<StatusMessageEntry>&
+RoomMember::RoomMemberImpl::Callbacks::Get() {
+    return callback_set_status_messages;
+}
+
+template <>
+RoomMember::RoomMemberImpl::CallbackSet<Room::BanList>&
+RoomMember::RoomMemberImpl::Callbacks::Get() {
+    return callback_set_ban_list;
+}
+
 template <typename T>
 void RoomMember::RoomMemberImpl::Invoke(const T& data) {
     std::lock_guard<std::mutex> lock(callback_mutex);
@@ -380,6 +511,11 @@ const std::string& RoomMember::GetNickname() const {
     return room_member_impl->nickname;
 }
 
+const std::string& RoomMember::GetUsername() const {
+    std::lock_guard<std::mutex> lock(room_member_impl->username_mutex);
+    return room_member_impl->username;
+}
+
 const MacAddress& RoomMember::GetMacAddress() const {
     ASSERT_MSG(IsConnected(), "Tried to get MAC address while not connected");
     return room_member_impl->mac_address;
@@ -389,9 +525,10 @@ RoomInformation RoomMember::GetRoomInformation() const {
     return room_member_impl->room_information;
 }
 
-void RoomMember::Join(const std::string& nick, const char* server_addr, u16 server_port,
+void RoomMember::Join(const std::string& nick, const std::string& console_id_hash,
-                      u16 client_port, const MacAddress& preferred_mac,
+                      const char* server_addr, u16 server_port, u16 client_port,
-                      const std::string& password) {
+                      const MacAddress& preferred_mac, const std::string& password,
+                      const std::string& token) {
     // If the member is connected, kill the connection first
     if (room_member_impl->loop_thread && room_member_impl->loop_thread->joinable()) {
         Leave();
@@ -415,7 +552,8 @@ void RoomMember::Join(const std::string& nick, const char* server_addr, u16 serv
         enet_host_connect(room_member_impl->client, &address, NumChannels, 0);
 
     if (!room_member_impl->server) {
-        room_member_impl->SetState(State::Error);
+        room_member_impl->SetState(State::Idle);
+        room_member_impl->SetError(Error::UnknownError);
         return;
     }
 
@@ -424,11 +562,12 @@ void RoomMember::Join(const std::string& nick, const char* server_addr, u16 serv
     if (net > 0 && event.type == ENET_EVENT_TYPE_CONNECT) {
         room_member_impl->nickname = nick;
         room_member_impl->StartLoop();
-        room_member_impl->SendJoinRequest(nick, preferred_mac, password);
+        room_member_impl->SendJoinRequest(nick, console_id_hash, preferred_mac, password, token);
         SendGameInfo(room_member_impl->current_game_info);
     } else {
         enet_peer_disconnect(room_member_impl->server, 0);
-        room_member_impl->SetState(State::CouldNotConnect);
+        room_member_impl->SetState(State::Idle);
+        room_member_impl->SetError(Error::CouldNotConnect);
     }
 }
 
@@ -466,11 +605,37 @@ void RoomMember::SendGameInfo(const GameInfo& game_info) {
     room_member_impl->Send(std::move(packet));
 }
 
+void RoomMember::SendModerationRequest(RoomMessageTypes type, const std::string& nickname) {
+    ASSERT_MSG(type == IdModKick || type == IdModBan || type == IdModUnban,
+               "type is not a moderation request");
+    if (!IsConnected())
+        return;
+
+    Packet packet;
+    packet << static_cast<u8>(type);
+    packet << nickname;
+    room_member_impl->Send(std::move(packet));
+}
+
+void RoomMember::RequestBanList() {
+    if (!IsConnected())
+        return;
+
+    Packet packet;
+    packet << static_cast<u8>(IdModGetBanList);
+    room_member_impl->Send(std::move(packet));
+}
+
 RoomMember::CallbackHandle<RoomMember::State> RoomMember::BindOnStateChanged(
     std::function<void(const RoomMember::State&)> callback) {
     return room_member_impl->Bind(callback);
 }
 
+RoomMember::CallbackHandle<RoomMember::Error> RoomMember::BindOnError(
+    std::function<void(const RoomMember::Error&)> callback) {
+    return room_member_impl->Bind(callback);
+}
+
 RoomMember::CallbackHandle<WifiPacket> RoomMember::BindOnWifiPacketReceived(
     std::function<void(const WifiPacket&)> callback) {
     return room_member_impl->Bind(callback);
@@ -486,6 +651,16 @@ RoomMember::CallbackHandle<ChatEntry> RoomMember::BindOnChatMessageRecieved(
     return room_member_impl->Bind(callback);
 }
 
+RoomMember::CallbackHandle<StatusMessageEntry> RoomMember::BindOnStatusMessageReceived(
+    std::function<void(const StatusMessageEntry&)> callback) {
+    return room_member_impl->Bind(callback);
+}
+
+RoomMember::CallbackHandle<Room::BanList> RoomMember::BindOnBanListReceived(
+    std::function<void(const Room::BanList&)> callback) {
+    return room_member_impl->Bind(callback);
+}
+
 template <typename T>
 void RoomMember::Unbind(CallbackHandle<T> handle) {
     std::lock_guard<std::mutex> lock(room_member_impl->callback_mutex);
@@ -503,7 +678,10 @@ void RoomMember::Leave() {
 
 template void RoomMember::Unbind(CallbackHandle<WifiPacket>);
 template void RoomMember::Unbind(CallbackHandle<RoomMember::State>);
+template void RoomMember::Unbind(CallbackHandle<RoomMember::Error>);
 template void RoomMember::Unbind(CallbackHandle<RoomInformation>);
 template void RoomMember::Unbind(CallbackHandle<ChatEntry>);
+template void RoomMember::Unbind(CallbackHandle<StatusMessageEntry>);
+template void RoomMember::Unbind(CallbackHandle<Room::BanList>);
 
 } // namespace Network

src/network/room_member.h

@@ -35,7 +35,17 @@ struct WifiPacket {
 /// Represents a chat message.
 struct ChatEntry {
     std::string nickname; ///< Nickname of the client who sent this message.
-    std::string message;  ///< Body of the message.
+    /// Web services username of the client who sent this message, can be empty.
+    std::string username;
+    std::string message; ///< Body of the message.
+};
+
+/// Represents a system status message.
+struct StatusMessageEntry {
+    StatusMessageTypes type; ///< Type of the message
+    /// Subject of the message. i.e. the user who is joining/leaving/being banned, etc.
+    std::string nickname;
+    std::string username;
 };
 
 /**
@@ -47,22 +57,38 @@ class RoomMember final {
 public:
     enum class State : u8 {
         Uninitialized, ///< Not initialized
-        Idle,          ///< Default state
+        Idle,          ///< Default state (i.e. not connected)
-        Error,         ///< Some error [permissions to network device missing or something]
         Joining,       ///< The client is attempting to join a room.
-        Joined, ///< The client is connected to the room and is ready to send/receive packets.
+        Joined,    ///< The client is connected to the room and is ready to send/receive packets.
+        Moderator, ///< The client is connnected to the room and is granted mod permissions.
+    };
+
+    enum class Error : u8 {
+        // Reasons why connection was closed
         LostConnection, ///< Connection closed
+        HostKicked,     ///< Kicked by the host
 
         // Reasons why connection was rejected
-        NameCollision,  ///< Somebody is already using this name
+        UnknownError,       ///< Some error [permissions to network device missing or something]
-        MacCollision,   ///< Somebody is already using that mac-address
+        NameCollision,      ///< Somebody is already using this name
-        WrongVersion,   ///< The room version is not the same as for this RoomMember
+        MacCollision,       ///< Somebody is already using that mac-address
-        WrongPassword,  ///< The password doesn't match the one from the Room
+        ConsoleIdCollision, ///< Somebody in the room has the same Console ID
-        CouldNotConnect ///< The room is not responding to a connection attempt
+        WrongVersion,       ///< The room version is not the same as for this RoomMember
+        WrongPassword,      ///< The password doesn't match the one from the Room
+        CouldNotConnect,    ///< The room is not responding to a connection attempt
+        RoomIsFull,         ///< Room is already at the maximum number of players
+        HostBanned,         ///< The user is banned by the host
+
+        // Reasons why moderation request failed
+        PermissionDenied, ///< The user does not have mod permissions
+        NoSuchUser,       ///< The nickname the user attempts to kick/ban does not exist
     };
 
     struct MemberInformation {
-        std::string nickname;   ///< Nickname of the member.
+        std::string nickname;     ///< Nickname of the member.
+        std::string username;     ///< The web services username of the member. Can be empty.
+        std::string display_name; ///< The web services display name of the member. Can be empty.
+        std::string avatar_url;   ///< Url to the member's avatar. Can be empty.
         GameInfo game_info;     ///< Name of the game they're currently playing, or empty if they're
                                 /// not playing anything.
         MacAddress mac_address; ///< MAC address associated with this member.
@@ -98,6 +124,11 @@ public:
      */
     const std::string& GetNickname() const;
 
+    /**
+     * Returns the username of the RoomMember.
+     */
+    const std::string& GetUsername() const;
+
     /**
      * Returns the MAC address of the RoomMember.
      */
@@ -115,11 +146,13 @@ public:
 
     /**
      * Attempts to join a room at the specified address and port, using the specified nickname.
-     * This may fail if the username is already taken.
+     * A console ID hash is passed in to check console ID conflicts.
+     * This may fail if the username or console ID is already taken.
      */
-    void Join(const std::string& nickname, const char* server_addr = "127.0.0.1",
+    void Join(const std::string& nickname, const std::string& console_id_hash,
-              const u16 server_port = DefaultRoomPort, const u16 client_port = 0,
+              const char* server_addr = "127.0.0.1", const u16 server_port = DefaultRoomPort,
-              const MacAddress& preferred_mac = NoPreferredMac, const std::string& password = "");
+              const u16 client_port = 0, const MacAddress& preferred_mac = NoPreferredMac,
+              const std::string& password = "", const std::string& token = "");
 
     /**
      * Sends a WiFi packet to the room.
@@ -139,6 +172,19 @@ public:
      */
     void SendGameInfo(const GameInfo& game_info);
 
+    /**
+     * Sends a moderation request to the room.
+     * @param type Moderation request type.
+     * @param nickname The subject of the request. (i.e. the user you want to kick/ban)
+     */
+    void SendModerationRequest(RoomMessageTypes type, const std::string& nickname);
+
+    /**
+     * Attempts to retrieve ban list from the room.
+     * If success, the ban list callback would be called. Otherwise an error would be emitted.
+     */
+    void RequestBanList();
+
     /**
      * Binds a function to an event that will be triggered every time the State of the member
      * changed. The function wil be called every time the event is triggered. The callback function
@@ -148,6 +194,15 @@ public:
      */
     CallbackHandle<State> BindOnStateChanged(std::function<void(const State&)> callback);
 
+    /**
+     * Binds a function to an event that will be triggered every time an error happened. The
+     * function wil be called every time the event is triggered. The callback function must not bind
+     * or unbind a function. Doing so will cause a deadlock
+     * @param callback The function to call
+     * @return A handle used for removing the function from the registered list
+     */
+    CallbackHandle<Error> BindOnError(std::function<void(const Error&)> callback);
+
     /**
      * Binds a function to an event that will be triggered every time a WifiPacket is received.
      * The function wil be called everytime the event is triggered.
@@ -178,6 +233,26 @@ public:
     CallbackHandle<ChatEntry> BindOnChatMessageRecieved(
         std::function<void(const ChatEntry&)> callback);
 
+    /**
+     * Binds a function to an event that will be triggered every time a StatusMessage is
+     * received. The function will be called every time the event is triggered. The callback
+     * function must not bind or unbind a function. Doing so will cause a deadlock
+     * @param callback The function to call
+     * @return A handle used for removing the function from the registered list
+     */
+    CallbackHandle<StatusMessageEntry> BindOnStatusMessageReceived(
+        std::function<void(const StatusMessageEntry&)> callback);
+
+    /**
+     * Binds a function to an event that will be triggered every time a requested ban list
+     * received. The function will be called every time the event is triggered. The callback
+     * function must not bind or unbind a function. Doing so will cause a deadlock
+     * @param callback The function to call
+     * @return A handle used for removing the function from the registered list
+     */
+    CallbackHandle<Room::BanList> BindOnBanListReceived(
+        std::function<void(const Room::BanList&)> callback);
+
     /**
      * Leaves the current room.
      */
@@ -192,24 +267,44 @@ static const char* GetStateStr(const RoomMember::State& s) {
     switch (s) {
     case RoomMember::State::Idle:
         return "Idle";
-    case RoomMember::State::Error:
-        return "Error";
     case RoomMember::State::Joining:
         return "Joining";
     case RoomMember::State::Joined:
         return "Joined";
-    case RoomMember::State::LostConnection:
+    case RoomMember::State::Moderator:
+        return "Moderator";
+    }
+    return "Unknown";
+}
+
+static const char* GetErrorStr(const RoomMember::Error& e) {
+    switch (e) {
+    case RoomMember::Error::LostConnection:
         return "LostConnection";
-    case RoomMember::State::NameCollision:
+    case RoomMember::Error::HostKicked:
+        return "HostKicked";
+    case RoomMember::Error::UnknownError:
+        return "UnknownError";
+    case RoomMember::Error::NameCollision:
         return "NameCollision";
-    case RoomMember::State::MacCollision:
+    case RoomMember::Error::MacCollision:
-        return "MacCollision";
+        return "MaxCollision";
-    case RoomMember::State::WrongVersion:
+    case RoomMember::Error::ConsoleIdCollision:
+        return "ConsoleIdCollision";
+    case RoomMember::Error::WrongVersion:
         return "WrongVersion";
-    case RoomMember::State::WrongPassword:
+    case RoomMember::Error::WrongPassword:
         return "WrongPassword";
-    case RoomMember::State::CouldNotConnect:
+    case RoomMember::Error::CouldNotConnect:
         return "CouldNotConnect";
+    case RoomMember::Error::RoomIsFull:
+        return "RoomIsFull";
+    case RoomMember::Error::HostBanned:
+        return "HostBanned";
+    case RoomMember::Error::PermissionDenied:
+        return "PermissionDenied";
+    case RoomMember::Error::NoSuchUser:
+        return "NoSuchUser";
     }
     return "Unknown";
 }

src/network/verify_user.cpp

@@ -0,0 +1,18 @@
+// Copyright 2018 Citra Emulator Project
+// Licensed under GPLv2 or any later version
+// Refer to the license.txt file included.
+
+#include "network/verify_user.h"
+
+namespace Network::VerifyUser {
+
+Backend::~Backend() = default;
+
+NullBackend::~NullBackend() = default;
+
+UserData NullBackend::LoadUserData([[maybe_unused]] const std::string& verify_UID,
+                                   [[maybe_unused]] const std::string& token) {
+    return {};
+}
+
+} // namespace Network::VerifyUser

src/network/verify_user.h

@@ -0,0 +1,46 @@
+// Copyright 2018 Citra Emulator Project
+// Licensed under GPLv2 or any later version
+// Refer to the license.txt file included.
+
+#pragma once
+
+#include <string>
+#include "common/logging/log.h"
+
+namespace Network::VerifyUser {
+
+struct UserData {
+    std::string username;
+    std::string display_name;
+    std::string avatar_url;
+    bool moderator = false; ///< Whether the user is a Citra Moderator.
+};
+
+/**
+ * A backend used for verifying users and loading user data.
+ */
+class Backend {
+public:
+    virtual ~Backend();
+
+    /**
+     * Verifies the given token and loads the information into a UserData struct.
+     * @param verify_UID A GUID that may be used for verification.
+     * @param token A token that contains user data and verification data. The format and content is
+     * decided by backends.
+     */
+    virtual UserData LoadUserData(const std::string& verify_UID, const std::string& token) = 0;
+};
+
+/**
+ * A null backend where the token is ignored.
+ * No verification is performed here and the function returns an empty UserData.
+ */
+class NullBackend final : public Backend {
+public:
+    ~NullBackend();
+
+    UserData LoadUserData(const std::string& verify_UID, const std::string& token) override;
+};
+
+} // namespace Network::VerifyUser

src/web_service/CMakeLists.txt

@@ -5,6 +5,8 @@ add_library(web_service STATIC
     telemetry_json.h
     verify_login.cpp
     verify_login.h
+    verify_user_jwt.cpp
+    verify_user_jwt.h
     web_backend.cpp
     web_backend.h
 )
@@ -15,4 +17,4 @@ get_directory_property(OPENSSL_LIBS
         DIRECTORY ${PROJECT_SOURCE_DIR}/externals/libressl
         DEFINITION OPENSSL_LIBS)
 target_compile_definitions(web_service PRIVATE -DCPPHTTPLIB_OPENSSL_SUPPORT)
-target_link_libraries(web_service PRIVATE common json-headers ${OPENSSL_LIBS} httplib lurlparser)
+target_link_libraries(web_service PRIVATE common network json-headers ${OPENSSL_LIBS} httplib lurlparser cpp-jwt)

src/web_service/announce_room_json.cpp

@@ -12,21 +12,36 @@
 namespace AnnounceMultiplayerRoom {
 
 void to_json(nlohmann::json& json, const Room::Member& member) {
-    json["name"] = member.name;
+    if (!member.username.empty()) {
+        json["username"] = member.username;
+    }
+    json["nickname"] = member.nickname;
+    if (!member.avatar_url.empty()) {
+        json["avatarUrl"] = member.avatar_url;
+    }
     json["gameName"] = member.game_name;
     json["gameId"] = member.game_id;
 }
 
 void from_json(const nlohmann::json& json, Room::Member& member) {
-    member.name = json.at("name").get<std::string>();
+    member.nickname = json.at("nickname").get<std::string>();
     member.game_name = json.at("gameName").get<std::string>();
     member.game_id = json.at("gameId").get<u64>();
+    try {
+        member.username = json.at("username").get<std::string>();
+        member.avatar_url = json.at("avatarUrl").get<std::string>();
+    } catch (const nlohmann::detail::out_of_range& e) {
+        member.username = member.avatar_url = "";
+        LOG_DEBUG(Network, "Member \'{}\' isn't authenticated", member.nickname);
+    }
 }
 
 void to_json(nlohmann::json& json, const Room& room) {
-    json["id"] = room.UID;
     json["port"] = room.port;
     json["name"] = room.name;
+    if (!room.description.empty()) {
+        json["description"] = room.description;
+    }
     json["preferredGameName"] = room.preferred_game;
     json["preferredGameId"] = room.preferred_game_id;
     json["maxPlayers"] = room.max_player;
@@ -39,8 +54,15 @@ void to_json(nlohmann::json& json, const Room& room) {
 }
 
 void from_json(const nlohmann::json& json, Room& room) {
+    room.verify_UID = json.at("externalGuid").get<std::string>();
     room.ip = json.at("address").get<std::string>();
     room.name = json.at("name").get<std::string>();
+    try {
+        room.description = json.at("description").get<std::string>();
+    } catch (const nlohmann::detail::out_of_range& e) {
+        room.description = "";
+        LOG_DEBUG(Network, "Room \'{}\' doesn't contain a description", room.name);
+    }
     room.owner = json.at("owner").get<std::string>();
     room.port = json.at("port").get<u16>();
     room.preferred_game = json.at("preferredGameName").get<std::string>();
@@ -59,12 +81,12 @@ void from_json(const nlohmann::json& json, Room& room) {
 
 namespace WebService {
 
-void RoomJson::SetRoomInformation(const std::string& uid, const std::string& name, const u16 port,
+void RoomJson::SetRoomInformation(const std::string& name, const std::string& description,
-                                  const u32 max_player, const u32 net_version,
+                                  const u16 port, const u32 max_player, const u32 net_version,
                                   const bool has_password, const std::string& preferred_game,
                                   const u64 preferred_game_id) {
     room.name = name;
-    room.UID = uid;
+    room.description = description;
     room.port = port;
     room.max_player = max_player;
     room.net_version = net_version;
@@ -72,20 +94,39 @@ void RoomJson::SetRoomInformation(const std::string& uid, const std::string& nam
     room.preferred_game = preferred_game;
     room.preferred_game_id = preferred_game_id;
 }
-void RoomJson::AddPlayer(const std::string& nickname,
+void RoomJson::AddPlayer(const std::string& username, const std::string& nickname,
+                         const std::string& avatar_url,
                          const AnnounceMultiplayerRoom::MacAddress& mac_address, const u64 game_id,
                          const std::string& game_name) {
     AnnounceMultiplayerRoom::Room::Member member;
-    member.name = nickname;
+    member.username = username;
+    member.nickname = nickname;
+    member.avatar_url = avatar_url;
     member.mac_address = mac_address;
     member.game_id = game_id;
     member.game_name = game_name;
     room.members.push_back(member);
 }
 
-Common::WebResult RoomJson::Announce() {
+Common::WebResult RoomJson::Update() {
+    if (room_id.empty()) {
+        LOG_ERROR(WebService, "Room must be registered to be updated");
+        return Common::WebResult{Common::WebResult::Code::LibError, "Room is not registered"};
+    }
+    nlohmann::json json{{"players", room.members}};
+    return client.PostJson(fmt::format("/lobby/{}", room_id), json.dump(), false);
+}
+
+std::string RoomJson::Register() {
     nlohmann::json json = room;
-    return client.PostJson("/lobby", json.dump(), false);
+    auto reply = client.PostJson("/lobby", json.dump(), false).returned_data;
+    if (reply.empty()) {
+        return "";
+    }
+    auto reply_json = nlohmann::json::parse(reply);
+    room = reply_json.get<AnnounceMultiplayerRoom::Room>();
+    room_id = reply_json.at("id").get<std::string>();
+    return room.verify_UID;
 }
 
 void RoomJson::ClearPlayers() {
@@ -101,12 +142,14 @@ AnnounceMultiplayerRoom::RoomList RoomJson::GetRoomList() {
 }
 
 void RoomJson::Delete() {
-    nlohmann::json json;
+    if (room_id.empty()) {
-    json["id"] = room.UID;
+        LOG_ERROR(WebService, "Room must be registered to be deleted");
+        return;
+    }
     Common::DetachedTasks::AddTask(
-        [host{this->host}, username{this->username}, token{this->token}, content{json.dump()}]() {
+        [host{this->host}, username{this->username}, token{this->token}, room_id{this->room_id}]() {
             // create a new client here because the this->client might be destroyed.
-            Client{host, username, token}.DeleteJson("/lobby", content, false);
+            Client{host, username, token}.DeleteJson(fmt::format("/lobby/{}", room_id), "", false);
         });
 }
 

src/web_service/announce_room_json.h

@@ -20,14 +20,16 @@ public:
     RoomJson(const std::string& host, const std::string& username, const std::string& token)
         : client(host, username, token), host(host), username(username), token(token) {}
     ~RoomJson() = default;
-    void SetRoomInformation(const std::string& uid, const std::string& name, const u16 port,
+    void SetRoomInformation(const std::string& name, const std::string& description, const u16 port,
                             const u32 max_player, const u32 net_version, const bool has_password,
                             const std::string& preferred_game,
                             const u64 preferred_game_id) override;
-    void AddPlayer(const std::string& nickname,
+    void AddPlayer(const std::string& username, const std::string& nickname,
+                   const std::string& avatar_url,
                    const AnnounceMultiplayerRoom::MacAddress& mac_address, const u64 game_id,
                    const std::string& game_name) override;
-    Common::WebResult Announce() override;
+    Common::WebResult Update() override;
+    std::string Register() override;
     void ClearPlayers() override;
     AnnounceMultiplayerRoom::RoomList GetRoomList() override;
     void Delete() override;
@@ -38,6 +40,7 @@ private:
     std::string host;
     std::string username;
     std::string token;
+    std::string room_id;
 };
 
 } // namespace WebService

src/web_service/verify_user_jwt.cpp

@@ -0,0 +1,60 @@
+// Copyright 2018 Citra Emulator Project
+// Licensed under GPLv2 or any later version
+// Refer to the license.txt file included.
+
+#include <system_error>
+#include <jwt/jwt.hpp>
+#include "common/logging/log.h"
+#include "common/web_result.h"
+#include "web_service/verify_user_jwt.h"
+#include "web_service/web_backend.h"
+
+namespace WebService {
+
+static std::string public_key;
+std::string GetPublicKey(const std::string& host) {
+    if (public_key.empty()) {
+        Client client(host, "", ""); // no need for credentials here
+        public_key = client.GetPlain("/jwt/external/key.pem", true).returned_data;
+        if (public_key.empty()) {
+            LOG_ERROR(WebService, "Could not fetch external JWT public key, verification may fail");
+        } else {
+            LOG_INFO(WebService, "Fetched external JWT public key (size={})", public_key.size());
+        }
+    }
+    return public_key;
+}
+
+VerifyUserJWT::VerifyUserJWT(const std::string& host) : pub_key(GetPublicKey(host)) {}
+
+Network::VerifyUser::UserData VerifyUserJWT::LoadUserData(const std::string& verify_UID,
+                                                          const std::string& token) {
+    const std::string audience = fmt::format("external-{}", verify_UID);
+    using namespace jwt::params;
+    std::error_code error;
+    auto decoded =
+        jwt::decode(token, algorithms({"rs256"}), error, secret(pub_key), issuer("citra-core"),
+                    aud(audience), validate_iat(true), validate_jti(true));
+    if (error) {
+        LOG_INFO(WebService, "Verification failed: category={}, code={}, message={}",
+                 error.category().name(), error.value(), error.message());
+        return {};
+    }
+    Network::VerifyUser::UserData user_data{};
+    if (decoded.payload().has_claim("username")) {
+        user_data.username = decoded.payload().get_claim_value<std::string>("username");
+    }
+    if (decoded.payload().has_claim("displayName")) {
+        user_data.display_name = decoded.payload().get_claim_value<std::string>("displayName");
+    }
+    if (decoded.payload().has_claim("avatarUrl")) {
+        user_data.avatar_url = decoded.payload().get_claim_value<std::string>("avatarUrl");
+    }
+    if (decoded.payload().has_claim("roles")) {
+        auto roles = decoded.payload().get_claim_value<std::vector<std::string>>("roles");
+        user_data.moderator = std::find(roles.begin(), roles.end(), "moderator") != roles.end();
+    }
+    return user_data;
+}
+
+} // namespace WebService

src/web_service/verify_user_jwt.h

@@ -0,0 +1,25 @@
+// Copyright 2018 Citra Emulator Project
+// Licensed under GPLv2 or any later version
+// Refer to the license.txt file included.
+
+#pragma once
+
+#include <fmt/format.h>
+#include "network/verify_user.h"
+#include "web_service/web_backend.h"
+
+namespace WebService {
+
+class VerifyUserJWT final : public Network::VerifyUser::Backend {
+public:
+    VerifyUserJWT(const std::string& host);
+    ~VerifyUserJWT() = default;
+
+    Network::VerifyUser::UserData LoadUserData(const std::string& verify_UID,
+                                               const std::string& token) override;
+
+private:
+    std::string pub_key;
+};
+
+} // namespace WebService

src/web_service/web_backend.cpp

@@ -7,6 +7,7 @@
 #include <mutex>
 #include <string>
 #include <LUrlParser.h>
+#include <fmt/format.h>
 #include <httplib.h>
 #include "common/common_types.h"
 #include "common/logging/log.h"
@@ -32,8 +33,9 @@ struct Client::Impl {
     }
 
     /// A generic function handles POST, GET and DELETE request together
-    Common::WebResult GenericJson(const std::string& method, const std::string& path,
+    Common::WebResult GenericRequest(const std::string& method, const std::string& path,
-                                  const std::string& data, bool allow_anonymous) {
+                                     const std::string& data, bool allow_anonymous,
+                                     const std::string& accept) {
         if (jwt.empty()) {
             UpdateJWT();
         }
@@ -44,11 +46,11 @@ struct Client::Impl {
                                      "Credentials needed"};
         }
 
-        auto result = GenericJson(method, path, data, jwt);
+        auto result = GenericRequest(method, path, data, accept, jwt);
         if (result.result_string == "401") {
             // Try again with new JWT
             UpdateJWT();
-            result = GenericJson(method, path, data, jwt);
+            result = GenericRequest(method, path, data, accept, jwt);
         }
 
         return result;
@@ -60,9 +62,10 @@ struct Client::Impl {
      * username + token is used if jwt is empty but username and token are
      * not empty anonymous if all of jwt, username and token are empty
      */
-    Common::WebResult GenericJson(const std::string& method, const std::string& path,
+    Common::WebResult GenericRequest(const std::string& method, const std::string& path,
-                                  const std::string& data, const std::string& jwt = "",
+                                     const std::string& data, const std::string& accept,
-                                  const std::string& username = "", const std::string& token = "") {
+                                     const std::string& jwt = "", const std::string& username = "",
+                                     const std::string& token = "") {
         if (cli == nullptr) {
             auto parsedUrl = LUrlParser::clParseURL::ParseURL(host);
             int port;
@@ -133,8 +136,7 @@ struct Client::Impl {
             return Common::WebResult{Common::WebResult::Code::WrongContent, ""};
         }
 
-        if (content_type->second.find("application/json") == std::string::npos &&
+        if (content_type->second.find(accept) == std::string::npos) {
-            content_type->second.find("text/html; charset=utf-8") == std::string::npos) {
             LOG_ERROR(WebService, "{} to {} returned wrong content: {}", method, host + path,
                       content_type->second);
             return Common::WebResult{Common::WebResult::Code::WrongContent, "Wrong content"};
@@ -148,7 +150,7 @@ struct Client::Impl {
             return;
         }
 
-        auto result = GenericJson("POST", "/jwt/internal", "", "", username, token);
+        auto result = GenericRequest("POST", "/jwt/internal", "", "text/html", "", username, token);
         if (result.result_code != Common::WebResult::Code::Success) {
             LOG_ERROR(WebService, "UpdateJWT failed");
         } else {
@@ -181,16 +183,29 @@ Client::~Client() = default;
 
 Common::WebResult Client::PostJson(const std::string& path, const std::string& data,
                                    bool allow_anonymous) {
-    return impl->GenericJson("POST", path, data, allow_anonymous);
+    return impl->GenericRequest("POST", path, data, allow_anonymous, "application/json");
 }
 
 Common::WebResult Client::GetJson(const std::string& path, bool allow_anonymous) {
-    return impl->GenericJson("GET", path, "", allow_anonymous);
+    return impl->GenericRequest("GET", path, "", allow_anonymous, "application/json");
 }
 
 Common::WebResult Client::DeleteJson(const std::string& path, const std::string& data,
                                      bool allow_anonymous) {
-    return impl->GenericJson("DELETE", path, data, allow_anonymous);
+    return impl->GenericRequest("DELETE", path, data, allow_anonymous, "application/json");
+}
+
+Common::WebResult Client::GetPlain(const std::string& path, bool allow_anonymous) {
+    return impl->GenericRequest("GET", path, "", allow_anonymous, "text/plain");
+}
+
+Common::WebResult Client::GetImage(const std::string& path, bool allow_anonymous) {
+    return impl->GenericRequest("GET", path, "", allow_anonymous, "image/png");
+}
+
+Common::WebResult Client::GetExternalJWT(const std::string& audience) {
+    return impl->GenericRequest("POST", fmt::format("/jwt/external/{}", audience), "", false,
+                                "text/html");
 }
 
 } // namespace WebService

src/web_service/web_backend.h

@@ -46,6 +46,29 @@ public:
     Common::WebResult DeleteJson(const std::string& path, const std::string& data,
                                  bool allow_anonymous);
 
+    /**
+     * Gets a plain string from the specified path.
+     * @param path the URL segment after the host address.
+     * @param allow_anonymous If true, allow anonymous unauthenticated requests.
+     * @return the result of the request.
+     */
+    Common::WebResult GetPlain(const std::string& path, bool allow_anonymous);
+
+    /**
+     * Gets an PNG image from the specified path.
+     * @param path the URL segment after the host address.
+     * @param allow_anonymous If true, allow anonymous unauthenticated requests.
+     * @return the result of the request.
+     */
+    Common::WebResult GetImage(const std::string& path, bool allow_anonymous);
+
+    /**
+     * Requests an external JWT for the specific audience provided.
+     * @param audience the audience of the JWT requested.
+     * @return the result of the request.
+     */
+    Common::WebResult GetExternalJWT(const std::string& audience);
+
 private:
     struct Impl;
     std::unique_ptr<Impl> impl;