Merge pull request #5042 from Morph1984/project-aether

Project Aether: Reimplementation of the Web Browser Applet

src/core/CMakeLists.txt

@@ -135,6 +135,8 @@ add_library(core STATIC
     frontend/emu_window.h
     frontend/framebuffer_layout.cpp
     frontend/framebuffer_layout.h
+    frontend/input_interpreter.cpp
+    frontend/input_interpreter.h
     frontend/input.h
     hardware_interrupt_manager.cpp
     hardware_interrupt_manager.h

src/core/frontend/applets/general_frontend.cpp

@@ -53,72 +53,4 @@ void DefaultPhotoViewerApplet::ShowAllPhotos(std::function<void()> finished) con
     finished();
 }
 
-ECommerceApplet::~ECommerceApplet() = default;
-
-DefaultECommerceApplet::~DefaultECommerceApplet() = default;
-
-void DefaultECommerceApplet::ShowApplicationInformation(
-    std::function<void()> finished, u64 title_id, std::optional<u128> user_id,
-    std::optional<bool> full_display, std::optional<std::string> extra_parameter) {
-    const auto value = user_id.value_or(u128{});
-    LOG_INFO(Service_AM,
-             "Application requested frontend show application information for EShop, "
-             "title_id={:016X}, user_id={:016X}{:016X}, full_display={}, extra_parameter={}",
-             title_id, value[1], value[0],
-             full_display.has_value() ? fmt::format("{}", *full_display) : "null",
-             extra_parameter.value_or("null"));
-    finished();
-}
-
-void DefaultECommerceApplet::ShowAddOnContentList(std::function<void()> finished, u64 title_id,
-                                                  std::optional<u128> user_id,
-                                                  std::optional<bool> full_display) {
-    const auto value = user_id.value_or(u128{});
-    LOG_INFO(Service_AM,
-             "Application requested frontend show add on content list for EShop, "
-             "title_id={:016X}, user_id={:016X}{:016X}, full_display={}",
-             title_id, value[1], value[0],
-             full_display.has_value() ? fmt::format("{}", *full_display) : "null");
-    finished();
-}
-
-void DefaultECommerceApplet::ShowSubscriptionList(std::function<void()> finished, u64 title_id,
-                                                  std::optional<u128> user_id) {
-    const auto value = user_id.value_or(u128{});
-    LOG_INFO(Service_AM,
-             "Application requested frontend show subscription list for EShop, title_id={:016X}, "
-             "user_id={:016X}{:016X}",
-             title_id, value[1], value[0]);
-    finished();
-}
-
-void DefaultECommerceApplet::ShowConsumableItemList(std::function<void()> finished, u64 title_id,
-                                                    std::optional<u128> user_id) {
-    const auto value = user_id.value_or(u128{});
-    LOG_INFO(
-        Service_AM,
-        "Application requested frontend show consumable item list for EShop, title_id={:016X}, "
-        "user_id={:016X}{:016X}",
-        title_id, value[1], value[0]);
-    finished();
-}
-
-void DefaultECommerceApplet::ShowShopHome(std::function<void()> finished, u128 user_id,
-                                          bool full_display) {
-    LOG_INFO(Service_AM,
-             "Application requested frontend show home menu for EShop, user_id={:016X}{:016X}, "
-             "full_display={}",
-             user_id[1], user_id[0], full_display);
-    finished();
-}
-
-void DefaultECommerceApplet::ShowSettings(std::function<void()> finished, u128 user_id,
-                                          bool full_display) {
-    LOG_INFO(Service_AM,
-             "Application requested frontend show settings menu for EShop, user_id={:016X}{:016X}, "
-             "full_display={}",
-             user_id[1], user_id[0], full_display);
-    finished();
-}
-
 } // namespace Core::Frontend

src/core/frontend/applets/general_frontend.h

@@ -58,55 +58,4 @@ public:
     void ShowAllPhotos(std::function<void()> finished) const override;
 };
 
-class ECommerceApplet {
-public:
-    virtual ~ECommerceApplet();
-
-    // Shows a page with application icons, description, name, and price.
-    virtual void ShowApplicationInformation(std::function<void()> finished, u64 title_id,
-                                            std::optional<u128> user_id = {},
-                                            std::optional<bool> full_display = {},
-                                            std::optional<std::string> extra_parameter = {}) = 0;
-
-    // Shows a page with all of the add on content available for a game, with name, description, and
-    // price.
-    virtual void ShowAddOnContentList(std::function<void()> finished, u64 title_id,
-                                      std::optional<u128> user_id = {},
-                                      std::optional<bool> full_display = {}) = 0;
-
-    // Shows a page with all of the subscriptions (recurring payments) for a game, with name,
-    // description, price, and renewal period.
-    virtual void ShowSubscriptionList(std::function<void()> finished, u64 title_id,
-                                      std::optional<u128> user_id = {}) = 0;
-
-    // Shows a page with a list of any additional game related purchasable items (DLC,
-    // subscriptions, etc) for a particular game, with name, description, type, and price.
-    virtual void ShowConsumableItemList(std::function<void()> finished, u64 title_id,
-                                        std::optional<u128> user_id = {}) = 0;
-
-    // Shows the home page of the shop.
-    virtual void ShowShopHome(std::function<void()> finished, u128 user_id, bool full_display) = 0;
-
-    // Shows the user settings page of the shop.
-    virtual void ShowSettings(std::function<void()> finished, u128 user_id, bool full_display) = 0;
-};
-
-class DefaultECommerceApplet : public ECommerceApplet {
-public:
-    ~DefaultECommerceApplet() override;
-
-    void ShowApplicationInformation(std::function<void()> finished, u64 title_id,
-                                    std::optional<u128> user_id, std::optional<bool> full_display,
-                                    std::optional<std::string> extra_parameter) override;
-    void ShowAddOnContentList(std::function<void()> finished, u64 title_id,
-                              std::optional<u128> user_id,
-                              std::optional<bool> full_display) override;
-    void ShowSubscriptionList(std::function<void()> finished, u64 title_id,
-                              std::optional<u128> user_id) override;
-    void ShowConsumableItemList(std::function<void()> finished, u64 title_id,
-                                std::optional<u128> user_id) override;
-    void ShowShopHome(std::function<void()> finished, u128 user_id, bool full_display) override;
-    void ShowSettings(std::function<void()> finished, u128 user_id, bool full_display) override;
-};
-
 } // namespace Core::Frontend

src/core/frontend/applets/web_browser.cpp

@@ -11,14 +11,22 @@ WebBrowserApplet::~WebBrowserApplet() = default;
 
 DefaultWebBrowserApplet::~DefaultWebBrowserApplet() = default;
 
-void DefaultWebBrowserApplet::OpenPageLocal(std::string_view filename,
-                                            std::function<void()> unpack_romfs_callback,
-                                            std::function<void()> finished_callback) {
-    LOG_INFO(Service_AM,
-             "(STUBBED) called - No suitable web browser implementation found to open website page "
-             "at '{}'!",
-             filename);
-    finished_callback();
+void DefaultWebBrowserApplet::OpenLocalWebPage(
+    std::string_view local_url, std::function<void()> extract_romfs_callback,
+    std::function<void(Service::AM::Applets::WebExitReason, std::string)> callback) const {
+    LOG_WARNING(Service_AM, "(STUBBED) called, backend requested to open local web page at {}",
+                local_url);
+
+    callback(Service::AM::Applets::WebExitReason::WindowClosed, "http://localhost/");
+}
+
+void DefaultWebBrowserApplet::OpenExternalWebPage(
+    std::string_view external_url,
+    std::function<void(Service::AM::Applets::WebExitReason, std::string)> callback) const {
+    LOG_WARNING(Service_AM, "(STUBBED) called, backend requested to open external web page at {}",
+                external_url);
+
+    callback(Service::AM::Applets::WebExitReason::WindowClosed, "http://localhost/");
 }
 
 } // namespace Core::Frontend

src/core/frontend/applets/web_browser.h

@@ -7,22 +7,34 @@
 #include <functional>
 #include <string_view>
 
+#include "core/hle/service/am/applets/web_types.h"
+
 namespace Core::Frontend {
 
 class WebBrowserApplet {
 public:
     virtual ~WebBrowserApplet();
 
-    virtual void OpenPageLocal(std::string_view url, std::function<void()> unpack_romfs_callback,
-                               std::function<void()> finished_callback) = 0;
+    virtual void OpenLocalWebPage(
+        std::string_view local_url, std::function<void()> extract_romfs_callback,
+        std::function<void(Service::AM::Applets::WebExitReason, std::string)> callback) const = 0;
+
+    virtual void OpenExternalWebPage(
+        std::string_view external_url,
+        std::function<void(Service::AM::Applets::WebExitReason, std::string)> callback) const = 0;
 };
 
 class DefaultWebBrowserApplet final : public WebBrowserApplet {
 public:
     ~DefaultWebBrowserApplet() override;
 
-    void OpenPageLocal(std::string_view url, std::function<void()> unpack_romfs_callback,
-                       std::function<void()> finished_callback) override;
+    void OpenLocalWebPage(std::string_view local_url, std::function<void()> extract_romfs_callback,
+                          std::function<void(Service::AM::Applets::WebExitReason, std::string)>
+                              callback) const override;
+
+    void OpenExternalWebPage(std::string_view external_url,
+                             std::function<void(Service::AM::Applets::WebExitReason, std::string)>
+                                 callback) const override;
 };
 
 } // namespace Core::Frontend

src/core/frontend/input_interpreter.cpp

@@ -0,0 +1,45 @@
+// Copyright 2020 yuzu Emulator Project
+// Licensed under GPLv2 or any later version
+// Refer to the license.txt file included.
+
+#include "core/core.h"
+#include "core/frontend/input_interpreter.h"
+#include "core/hle/service/hid/controllers/npad.h"
+#include "core/hle/service/hid/hid.h"
+#include "core/hle/service/sm/sm.h"
+
+InputInterpreter::InputInterpreter(Core::System& system)
+    : npad{system.ServiceManager()
+               .GetService<Service::HID::Hid>("hid")
+               ->GetAppletResource()
+               ->GetController<Service::HID::Controller_NPad>(Service::HID::HidController::NPad)} {}
+
+InputInterpreter::~InputInterpreter() = default;
+
+void InputInterpreter::PollInput() {
+    const u32 button_state = npad.GetAndResetPressState();
+
+    previous_index = current_index;
+    current_index = (current_index + 1) % button_states.size();
+
+    button_states[current_index] = button_state;
+}
+
+bool InputInterpreter::IsButtonPressedOnce(HIDButton button) const {
+    const bool current_press =
+        (button_states[current_index] & (1U << static_cast<u8>(button))) != 0;
+    const bool previous_press =
+        (button_states[previous_index] & (1U << static_cast<u8>(button))) != 0;
+
+    return current_press && !previous_press;
+}
+
+bool InputInterpreter::IsButtonHeld(HIDButton button) const {
+    u32 held_buttons{button_states[0]};
+
+    for (std::size_t i = 1; i < button_states.size(); ++i) {
+        held_buttons &= button_states[i];
+    }
+
+    return (held_buttons & (1U << static_cast<u8>(button))) != 0;
+}

src/core/frontend/input_interpreter.h

@@ -0,0 +1,120 @@
+// Copyright 2020 yuzu Emulator Project
+// Licensed under GPLv2 or any later version
+// Refer to the license.txt file included.
+
+#pragma once
+
+#include <array>
+
+#include "common/common_types.h"
+
+namespace Core {
+class System;
+}
+
+namespace Service::HID {
+class Controller_NPad;
+}
+
+enum class HIDButton : u8 {
+    A,
+    B,
+    X,
+    Y,
+    LStick,
+    RStick,
+    L,
+    R,
+    ZL,
+    ZR,
+    Plus,
+    Minus,
+
+    DLeft,
+    DUp,
+    DRight,
+    DDown,
+
+    LStickLeft,
+    LStickUp,
+    LStickRight,
+    LStickDown,
+
+    RStickLeft,
+    RStickUp,
+    RStickRight,
+    RStickDown,
+
+    LeftSL,
+    LeftSR,
+
+    RightSL,
+    RightSR,
+};
+
+/**
+ * The InputInterpreter class interfaces with HID to retrieve button press states.
+ * Input is intended to be polled every 50ms so that a button is considered to be
+ * held down after 400ms has elapsed since the initial button press and subsequent
+ * repeated presses occur every 50ms.
+ */
+class InputInterpreter {
+public:
+    explicit InputInterpreter(Core::System& system);
+    virtual ~InputInterpreter();
+
+    /// Gets a button state from HID and inserts it into the array of button states.
+    void PollInput();
+
+    /**
+     * The specified button is considered to be pressed once
+     * if it is currently pressed and not pressed previously.
+     *
+     * @param button The button to check.
+     *
+     * @returns True when the button is pressed once.
+     */
+    [[nodiscard]] bool IsButtonPressedOnce(HIDButton button) const;
+
+    /**
+     * Checks whether any of the buttons in the parameter list is pressed once.
+     *
+     * @tparam HIDButton The buttons to check.
+     *
+     * @returns True when at least one of the buttons is pressed once.
+     */
+    template <HIDButton... T>
+    [[nodiscard]] bool IsAnyButtonPressedOnce() {
+        return (IsButtonPressedOnce(T) || ...);
+    }
+
+    /**
+     * The specified button is considered to be held down if it is pressed in all 9 button states.
+     *
+     * @param button The button to check.
+     *
+     * @returns True when the button is held down.
+     */
+    [[nodiscard]] bool IsButtonHeld(HIDButton button) const;
+
+    /**
+     * Checks whether any of the buttons in the parameter list is held down.
+     *
+     * @tparam HIDButton The buttons to check.
+     *
+     * @returns True when at least one of the buttons is held down.
+     */
+    template <HIDButton... T>
+    [[nodiscard]] bool IsAnyButtonHeld() {
+        return (IsButtonHeld(T) || ...);
+    }
+
+private:
+    Service::HID::Controller_NPad& npad;
+
+    /// Stores 9 consecutive button states polled from HID.
+    std::array<u32, 9> button_states{};
+
+    std::size_t previous_index{};
+    std::size_t current_index{};
+};

src/core/hle/service/am/applets/applets.cpp

@@ -142,14 +142,14 @@ void Applet::Initialize() {
 
 AppletFrontendSet::AppletFrontendSet() = default;
 
-AppletFrontendSet::AppletFrontendSet(ControllerApplet controller, ECommerceApplet e_commerce,
-                                     ErrorApplet error, ParentalControlsApplet parental_controls,
-                                     PhotoViewer photo_viewer, ProfileSelect profile_select,
-                                     SoftwareKeyboard software_keyboard, WebBrowser web_browser)
-    : controller{std::move(controller)}, e_commerce{std::move(e_commerce)}, error{std::move(error)},
-      parental_controls{std::move(parental_controls)}, photo_viewer{std::move(photo_viewer)},
-      profile_select{std::move(profile_select)}, software_keyboard{std::move(software_keyboard)},
-      web_browser{std::move(web_browser)} {}
+AppletFrontendSet::AppletFrontendSet(ControllerApplet controller_applet, ErrorApplet error_applet,
+                                     ParentalControlsApplet parental_controls_applet,
+                                     PhotoViewer photo_viewer_, ProfileSelect profile_select_,
+                                     SoftwareKeyboard software_keyboard_, WebBrowser web_browser_)
+    : controller{std::move(controller_applet)}, error{std::move(error_applet)},
+      parental_controls{std::move(parental_controls_applet)},
+      photo_viewer{std::move(photo_viewer_)}, profile_select{std::move(profile_select_)},
+      software_keyboard{std::move(software_keyboard_)}, web_browser{std::move(web_browser_)} {}
 
 AppletFrontendSet::~AppletFrontendSet() = default;
 
@@ -170,10 +170,6 @@ void AppletManager::SetAppletFrontendSet(AppletFrontendSet set) {
         frontend.controller = std::move(set.controller);
     }
 
-    if (set.e_commerce != nullptr) {
-        frontend.e_commerce = std::move(set.e_commerce);
-    }
-
     if (set.error != nullptr) {
         frontend.error = std::move(set.error);
     }
@@ -210,10 +206,6 @@ void AppletManager::SetDefaultAppletsIfMissing() {
             std::make_unique<Core::Frontend::DefaultControllerApplet>(system.ServiceManager());
     }
 
-    if (frontend.e_commerce == nullptr) {
-        frontend.e_commerce = std::make_unique<Core::Frontend::DefaultECommerceApplet>();
-    }
-
     if (frontend.error == nullptr) {
         frontend.error = std::make_unique<Core::Frontend::DefaultErrorApplet>();
     }
@@ -257,13 +249,14 @@ std::shared_ptr<Applet> AppletManager::GetApplet(AppletId id) const {
         return std::make_shared<ProfileSelect>(system, *frontend.profile_select);
     case AppletId::SoftwareKeyboard:
         return std::make_shared<SoftwareKeyboard>(system, *frontend.software_keyboard);
+    case AppletId::Web:
+    case AppletId::Shop:
+    case AppletId::OfflineWeb:
+    case AppletId::LoginShare:
+    case AppletId::WebAuth:
+        return std::make_shared<WebBrowser>(system, *frontend.web_browser);
     case AppletId::PhotoViewer:
         return std::make_shared<PhotoViewer>(system, *frontend.photo_viewer);
-    case AppletId::LibAppletShop:
-        return std::make_shared<WebBrowser>(system, *frontend.web_browser,
-                                            frontend.e_commerce.get());
-    case AppletId::LibAppletOff:
-        return std::make_shared<WebBrowser>(system, *frontend.web_browser);
     default:
         UNIMPLEMENTED_MSG(
             "No backend implementation exists for applet_id={:02X}! Falling back to stub applet.",

src/core/hle/service/am/applets/applets.h

@@ -50,13 +50,13 @@ enum class AppletId : u32 {
     ProfileSelect = 0x10,
     SoftwareKeyboard = 0x11,
     MiiEdit = 0x12,
-    LibAppletWeb = 0x13,
-    LibAppletShop = 0x14,
+    Web = 0x13,
+    Shop = 0x14,
     PhotoViewer = 0x15,
     Settings = 0x16,
-    LibAppletOff = 0x17,
-    LibAppletWhitelisted = 0x18,
-    LibAppletAuth = 0x19,
+    OfflineWeb = 0x17,
+    LoginShare = 0x18,
+    WebAuth = 0x19,
     MyPage = 0x1A,
 };
 
@@ -157,7 +157,6 @@ protected:
 
 struct AppletFrontendSet {
     using ControllerApplet = std::unique_ptr<Core::Frontend::ControllerApplet>;
-    using ECommerceApplet = std::unique_ptr<Core::Frontend::ECommerceApplet>;
     using ErrorApplet = std::unique_ptr<Core::Frontend::ErrorApplet>;
     using ParentalControlsApplet = std::unique_ptr<Core::Frontend::ParentalControlsApplet>;
     using PhotoViewer = std::unique_ptr<Core::Frontend::PhotoViewerApplet>;
@@ -166,10 +165,10 @@ struct AppletFrontendSet {
     using WebBrowser = std::unique_ptr<Core::Frontend::WebBrowserApplet>;
 
     AppletFrontendSet();
-    AppletFrontendSet(ControllerApplet controller, ECommerceApplet e_commerce, ErrorApplet error,
-                      ParentalControlsApplet parental_controls, PhotoViewer photo_viewer,
-                      ProfileSelect profile_select, SoftwareKeyboard software_keyboard,
-                      WebBrowser web_browser);
+    AppletFrontendSet(ControllerApplet controller_applet, ErrorApplet error_applet,
+                      ParentalControlsApplet parental_controls_applet, PhotoViewer photo_viewer_,
+                      ProfileSelect profile_select_, SoftwareKeyboard software_keyboard_,
+                      WebBrowser web_browser_);
     ~AppletFrontendSet();
 
     AppletFrontendSet(const AppletFrontendSet&) = delete;
@@ -179,7 +178,6 @@ struct AppletFrontendSet {
     AppletFrontendSet& operator=(AppletFrontendSet&&) noexcept;
 
     ControllerApplet controller;
-    ECommerceApplet e_commerce;
     ErrorApplet error;
     ParentalControlsApplet parental_controls;
     PhotoViewer photo_viewer;

src/core/hle/service/am/applets/web_browser.cpp

@@ -1,558 +1,478 @@
-// Copyright 2018 yuzu emulator team
+// Copyright 2020 yuzu Emulator Project
 // Licensed under GPLv2 or any later version
 // Refer to the license.txt file included.
 
-#include <array>
-#include <cstring>
-#include <vector>
-
 #include "common/assert.h"
-#include "common/common_funcs.h"
 #include "common/common_paths.h"
 #include "common/file_util.h"
-#include "common/hex_util.h"
 #include "common/logging/log.h"
 #include "common/string_util.h"
 #include "core/core.h"
 #include "core/file_sys/content_archive.h"
 #include "core/file_sys/mode.h"
 #include "core/file_sys/nca_metadata.h"
+#include "core/file_sys/patch_manager.h"
 #include "core/file_sys/registered_cache.h"
 #include "core/file_sys/romfs.h"
 #include "core/file_sys/system_archive/system_archive.h"
-#include "core/file_sys/vfs_types.h"
-#include "core/frontend/applets/general_frontend.h"
+#include "core/file_sys/vfs_vector.h"
 #include "core/frontend/applets/web_browser.h"
 #include "core/hle/kernel/process.h"
+#include "core/hle/result.h"
+#include "core/hle/service/am/am.h"
 #include "core/hle/service/am/applets/web_browser.h"
 #include "core/hle/service/filesystem/filesystem.h"
-#include "core/loader/loader.h"
+#include "core/hle/service/ns/pl_u.h"
 
 namespace Service::AM::Applets {
 
-enum class WebArgTLVType : u16 {
-    InitialURL = 0x1,
-    ShopArgumentsURL = 0x2, ///< TODO(DarkLordZach): This is not the official name.
-    CallbackURL = 0x3,
-    CallbackableURL = 0x4,
-    ApplicationID = 0x5,
-    DocumentPath = 0x6,
-    DocumentKind = 0x7,
-    SystemDataID = 0x8,
-    ShareStartPage = 0x9,
-    Whitelist = 0xA,
-    News = 0xB,
-    UserID = 0xE,
-    AlbumEntry0 = 0xF,
-    ScreenShotEnabled = 0x10,
-    EcClientCertEnabled = 0x11,
-    Unk12 = 0x12,
-    PlayReportEnabled = 0x13,
-    Unk14 = 0x14,
-    Unk15 = 0x15,
-    BootDisplayKind = 0x17,
-    BackgroundKind = 0x18,
-    FooterEnabled = 0x19,
-    PointerEnabled = 0x1A,
-    LeftStickMode = 0x1B,
-    KeyRepeatFrame1 = 0x1C,
-    KeyRepeatFrame2 = 0x1D,
-    BootAsMediaPlayerInv = 0x1E,
-    DisplayUrlKind = 0x1F,
-    BootAsMediaPlayer = 0x21,
-    ShopJumpEnabled = 0x22,
-    MediaAutoPlayEnabled = 0x23,
-    LobbyParameter = 0x24,
-    ApplicationAlbumEntry = 0x26,
-    JsExtensionEnabled = 0x27,
-    AdditionalCommentText = 0x28,
-    TouchEnabledOnContents = 0x29,
-    UserAgentAdditionalString = 0x2A,
-    AdditionalMediaData0 = 0x2B,
-    MediaPlayerAutoCloseEnabled = 0x2C,
-    PageCacheEnabled = 0x2D,
-    WebAudioEnabled = 0x2E,
-    Unk2F = 0x2F,
-    YouTubeVideoWhitelist = 0x31,
-    FooterFixedKind = 0x32,
-    PageFadeEnabled = 0x33,
-    MediaCreatorApplicationRatingAge = 0x34,
-    BootLoadingIconEnabled = 0x35,
-    PageScrollIndicationEnabled = 0x36,
-    MediaPlayerSpeedControlEnabled = 0x37,
-    AlbumEntry1 = 0x38,
-    AlbumEntry2 = 0x39,
-    AlbumEntry3 = 0x3A,
-    AdditionalMediaData1 = 0x3B,
-    AdditionalMediaData2 = 0x3C,
-    AdditionalMediaData3 = 0x3D,
-    BootFooterButton = 0x3E,
-    OverrideWebAudioVolume = 0x3F,
-    OverrideMediaAudioVolume = 0x40,
-    BootMode = 0x41,
-    WebSessionEnabled = 0x42,
-};
-
-enum class ShimKind : u32 {
-    Shop = 1,
-    Login = 2,
-    Offline = 3,
-    Share = 4,
-    Web = 5,
-    Wifi = 6,
-    Lobby = 7,
-};
-
-enum class ShopWebTarget {
-    ApplicationInfo,
-    AddOnContentList,
-    SubscriptionList,
-    ConsumableItemList,
-    Home,
-    Settings,
-};
-
 namespace {
 
-constexpr std::size_t SHIM_KIND_COUNT = 0x8;
+template <typename T>
+void ParseRawValue(T& value, const std::vector<u8>& data) {
+    static_assert(std::is_trivially_copyable_v<T>,
+                  "It's undefined behavior to use memcpy with non-trivially copyable objects");
+    std::memcpy(&value, data.data(), data.size());
+}
 
-struct WebArgHeader {
-    u16 count;
-    INSERT_PADDING_BYTES(2);
-    ShimKind kind;
-};
-static_assert(sizeof(WebArgHeader) == 0x8, "WebArgHeader has incorrect size.");
+template <typename T>
+T ParseRawValue(const std::vector<u8>& data) {
+    T value;
+    ParseRawValue(value, data);
+    return value;
+}
 
-struct WebArgTLV {
-    WebArgTLVType type;
-    u16 size;
-    u32 offset;
-};
-static_assert(sizeof(WebArgTLV) == 0x8, "WebArgTLV has incorrect size.");
+std::string ParseStringValue(const std::vector<u8>& data) {
+    return Common::StringFromFixedZeroTerminatedBuffer(reinterpret_cast<const char*>(data.data()),
+                                                       data.size());
+}
 
-struct WebCommonReturnValue {
-    u32 result_code;
-    INSERT_PADDING_BYTES(0x4);
-    std::array<char, 0x1000> last_url;
-    u64 last_url_size;
-};
-static_assert(sizeof(WebCommonReturnValue) == 0x1010, "WebCommonReturnValue has incorrect size.");
-
-struct WebWifiPageArg {
-    INSERT_PADDING_BYTES(4);
-    std::array<char, 0x100> connection_test_url;
-    std::array<char, 0x400> initial_url;
-    std::array<u8, 0x10> nifm_network_uuid;
-    u32 nifm_requirement;
-};
-static_assert(sizeof(WebWifiPageArg) == 0x518, "WebWifiPageArg has incorrect size.");
+std::string GetMainURL(const std::string& url) {
+    const auto index = url.find('?');
 
-struct WebWifiReturnValue {
-    INSERT_PADDING_BYTES(4);
-    u32 result;
-};
-static_assert(sizeof(WebWifiReturnValue) == 0x8, "WebWifiReturnValue has incorrect size.");
+    if (index == std::string::npos) {
+        return url;
+    }
 
-enum class OfflineWebSource : u32 {
-    OfflineHtmlPage = 0x1,
-    ApplicationLegalInformation = 0x2,
-    SystemDataPage = 0x3,
-};
+    return url.substr(0, index);
+}
+
+WebArgInputTLVMap ReadWebArgs(const std::vector<u8>& web_arg, WebArgHeader& web_arg_header) {
+    std::memcpy(&web_arg_header, web_arg.data(), sizeof(WebArgHeader));
 
-std::map<WebArgTLVType, std::vector<u8>> GetWebArguments(const std::vector<u8>& arg) {
-    if (arg.size() < sizeof(WebArgHeader))
+    if (web_arg.size() == sizeof(WebArgHeader)) {
         return {};
+    }
 
-    WebArgHeader header{};
-    std::memcpy(&header, arg.data(), sizeof(WebArgHeader));
+    WebArgInputTLVMap input_tlv_map;
 
-    std::map<WebArgTLVType, std::vector<u8>> out;
-    u64 offset = sizeof(WebArgHeader);
-    for (std::size_t i = 0; i < header.count; ++i) {
-        if (arg.size() < (offset + sizeof(WebArgTLV)))
-            return out;
+    u64 current_offset = sizeof(WebArgHeader);
 
-        WebArgTLV tlv{};
-        std::memcpy(&tlv, arg.data() + offset, sizeof(WebArgTLV));
-        offset += sizeof(WebArgTLV);
+    for (std::size_t i = 0; i < web_arg_header.total_tlv_entries; ++i) {
+        if (web_arg.size() < current_offset + sizeof(WebArgInputTLV)) {
+            return input_tlv_map;
+        }
 
-        offset += tlv.offset;
-        if (arg.size() < (offset + tlv.size))
-            return out;
+        WebArgInputTLV input_tlv;
+        std::memcpy(&input_tlv, web_arg.data() + current_offset, sizeof(WebArgInputTLV));
 
-        std::vector<u8> data(tlv.size);
-        std::memcpy(data.data(), arg.data() + offset, tlv.size);
-        offset += tlv.size;
+        current_offset += sizeof(WebArgInputTLV);
 
-        out.insert_or_assign(tlv.type, data);
+        if (web_arg.size() < current_offset + input_tlv.arg_data_size) {
+            return input_tlv_map;
         }
 
-    return out;
-}
+        std::vector<u8> data(input_tlv.arg_data_size);
+        std::memcpy(data.data(), web_arg.data() + current_offset, input_tlv.arg_data_size);
+
+        current_offset += input_tlv.arg_data_size;
 
-FileSys::VirtualFile GetApplicationRomFS(const Core::System& system, u64 title_id,
-                                         FileSys::ContentRecordType type) {
-    const auto& installed{system.GetContentProvider()};
-    const auto res = installed.GetEntry(title_id, type);
+        input_tlv_map.insert_or_assign(input_tlv.input_tlv_type, std::move(data));
+    }
 
-    if (res != nullptr) {
-        return res->GetRomFS();
+    return input_tlv_map;
 }
 
-    if (type == FileSys::ContentRecordType::Data) {
+FileSys::VirtualFile GetOfflineRomFS(Core::System& system, u64 title_id,
+                                     FileSys::ContentRecordType nca_type) {
+    if (nca_type == FileSys::ContentRecordType::Data) {
+        const auto nca =
+            system.GetFileSystemController().GetSystemNANDContents()->GetEntry(title_id, nca_type);
+
+        if (nca == nullptr) {
+            LOG_ERROR(Service_AM,
+                      "NCA of type={} with title_id={:016X} is not found in the System NAND!",
+                      nca_type, title_id);
             return FileSys::SystemArchive::SynthesizeSystemArchive(title_id);
         }
 
+        return nca->GetRomFS();
+    } else {
+        const auto nca = system.GetContentProvider().GetEntry(title_id, nca_type);
+
+        if (nca == nullptr) {
+            LOG_ERROR(Service_AM,
+                      "NCA of type={} with title_id={:016X} is not found in the ContentProvider!",
+                      nca_type, title_id);
             return nullptr;
         }
 
-} // Anonymous namespace
+        const FileSys::PatchManager pm{title_id, system.GetFileSystemController(),
+                                       system.GetContentProvider()};
 
-WebBrowser::WebBrowser(Core::System& system_, Core::Frontend::WebBrowserApplet& frontend_,
-                       Core::Frontend::ECommerceApplet* frontend_e_commerce_)
-    : Applet{system_.Kernel()}, frontend(frontend_),
-      frontend_e_commerce(frontend_e_commerce_), system{system_} {}
+        return pm.PatchRomFS(nca->GetRomFS(), nca->GetBaseIVFCOffset(), nca_type);
+    }
+}
 
-WebBrowser::~WebBrowser() = default;
+void ExtractSharedFonts(Core::System& system) {
+    static constexpr std::array<const char*, 7> DECRYPTED_SHARED_FONTS{
+        "FontStandard.ttf",
+        "FontChineseSimplified.ttf",
+        "FontExtendedChineseSimplified.ttf",
+        "FontChineseTraditional.ttf",
+        "FontKorean.ttf",
+        "FontNintendoExtended.ttf",
+        "FontNintendoExtended2.ttf",
+    };
 
-void WebBrowser::Initialize() {
-    Applet::Initialize();
+    for (std::size_t i = 0; i < NS::SHARED_FONTS.size(); ++i) {
+        const auto fonts_dir = Common::FS::SanitizePath(
+            fmt::format("{}/fonts", Common::FS::GetUserPath(Common::FS::UserPath::CacheDir)),
+            Common::FS::DirectorySeparator::PlatformDefault);
 
-    complete = false;
-    temporary_dir.clear();
-    filename.clear();
-    status = RESULT_SUCCESS;
+        const auto font_file_path =
+            Common::FS::SanitizePath(fmt::format("{}/{}", fonts_dir, DECRYPTED_SHARED_FONTS[i]),
+                                     Common::FS::DirectorySeparator::PlatformDefault);
 
-    const auto web_arg_storage = broker.PopNormalDataToApplet();
-    ASSERT(web_arg_storage != nullptr);
-    const auto& web_arg = web_arg_storage->GetData();
+        if (Common::FS::Exists(font_file_path)) {
+            continue;
+        }
 
-    ASSERT(web_arg.size() >= 0x8);
-    std::memcpy(&kind, web_arg.data() + 0x4, sizeof(ShimKind));
+        const auto font = NS::SHARED_FONTS[i];
+        const auto font_title_id = static_cast<u64>(font.first);
 
-    args = GetWebArguments(web_arg);
+        const auto nca = system.GetFileSystemController().GetSystemNANDContents()->GetEntry(
+            font_title_id, FileSys::ContentRecordType::Data);
 
-    InitializeInternal();
-}
+        FileSys::VirtualFile romfs;
 
-bool WebBrowser::TransactionComplete() const {
-    return complete;
+        if (!nca) {
+            romfs = FileSys::SystemArchive::SynthesizeSystemArchive(font_title_id);
+        } else {
+            romfs = nca->GetRomFS();
         }
 
-ResultCode WebBrowser::GetStatus() const {
-    return status;
+        if (!romfs) {
+            LOG_ERROR(Service_AM, "SharedFont RomFS with title_id={:016X} cannot be extracted!",
+                      font_title_id);
+            continue;
         }
 
-void WebBrowser::ExecuteInteractive() {
-    UNIMPLEMENTED_MSG("Unexpected interactive data recieved!");
-}
+        const auto extracted_romfs = FileSys::ExtractRomFS(romfs);
 
-void WebBrowser::Execute() {
-    if (complete) {
-        return;
+        if (!extracted_romfs) {
+            LOG_ERROR(Service_AM, "SharedFont RomFS with title_id={:016X} failed to extract!",
+                      font_title_id);
+            continue;
         }
 
-    if (status != RESULT_SUCCESS) {
-        complete = true;
-
-        // This is a workaround in order not to softlock yuzu when an error happens during the
-        // webapplet init. In order to avoid an svcBreak, the status is set to RESULT_SUCCESS
-        Finalize();
-        status = RESULT_SUCCESS;
+        const auto font_file = extracted_romfs->GetFile(font.second);
 
-        return;
+        if (!font_file) {
+            LOG_ERROR(Service_AM, "SharedFont RomFS with title_id={:016X} has no font file \"{}\"!",
+                      font_title_id, font.second);
+            continue;
         }
 
-    ExecuteInternal();
-}
+        std::vector<u32> font_data_u32(font_file->GetSize() / sizeof(u32));
+        font_file->ReadBytes<u32>(font_data_u32.data(), font_file->GetSize());
 
-void WebBrowser::UnpackRomFS() {
-    if (unpacked)
-        return;
+        std::transform(font_data_u32.begin(), font_data_u32.end(), font_data_u32.begin(),
+                       Common::swap32);
 
-    ASSERT(offline_romfs != nullptr);
-    const auto dir =
-        FileSys::ExtractRomFS(offline_romfs, FileSys::RomFSExtractionType::SingleDiscard);
-    const auto& vfs{system.GetFilesystem()};
-    const auto temp_dir = vfs->CreateDirectory(temporary_dir, FileSys::Mode::ReadWrite);
-    FileSys::VfsRawCopyD(dir, temp_dir);
+        std::vector<u8> decrypted_data(font_file->GetSize() - 8);
 
-    unpacked = true;
-}
+        NS::DecryptSharedFontToTTF(font_data_u32, decrypted_data);
 
-void WebBrowser::Finalize() {
-    complete = true;
+        FileSys::VirtualFile decrypted_font = std::make_shared<FileSys::VectorVfsFile>(
+            std::move(decrypted_data), DECRYPTED_SHARED_FONTS[i]);
 
-    WebCommonReturnValue out{};
-    out.result_code = 0;
-    out.last_url_size = 0;
+        const auto temp_dir =
+            system.GetFilesystem()->CreateDirectory(fonts_dir, FileSys::Mode::ReadWrite);
 
-    std::vector<u8> data(sizeof(WebCommonReturnValue));
-    std::memcpy(data.data(), &out, sizeof(WebCommonReturnValue));
-
-    broker.PushNormalDataFromApplet(std::make_shared<IStorage>(system, std::move(data)));
-    broker.SignalStateChanged();
+        const auto out_file = temp_dir->CreateFile(DECRYPTED_SHARED_FONTS[i]);
 
-    if (!temporary_dir.empty() && Common::FS::IsDirectory(temporary_dir)) {
-        Common::FS::DeleteDirRecursively(temporary_dir);
+        FileSys::VfsRawCopy(decrypted_font, out_file);
     }
 }
 
-void WebBrowser::InitializeInternal() {
-    using WebAppletInitializer = void (WebBrowser::*)();
+} // namespace
 
-    constexpr std::array<WebAppletInitializer, SHIM_KIND_COUNT> functions{
-        nullptr, &WebBrowser::InitializeShop,
-        nullptr, &WebBrowser::InitializeOffline,
-        nullptr, nullptr,
-        nullptr, nullptr,
-    };
+WebBrowser::WebBrowser(Core::System& system_, const Core::Frontend::WebBrowserApplet& frontend_)
+    : Applet{system_.Kernel()}, frontend(frontend_), system{system_} {}
 
-    const auto index = static_cast<u32>(kind);
+WebBrowser::~WebBrowser() = default;
 
-    if (index > functions.size() || functions[index] == nullptr) {
-        LOG_ERROR(Service_AM, "Invalid shim_kind={:08X}", index);
-        return;
-    }
+void WebBrowser::Initialize() {
+    Applet::Initialize();
 
-    const auto function = functions[index];
-    (this->*function)();
-}
+    LOG_INFO(Service_AM, "Initializing Web Browser Applet.");
 
-void WebBrowser::ExecuteInternal() {
-    using WebAppletExecutor = void (WebBrowser::*)();
+    LOG_DEBUG(Service_AM,
+              "Initializing Applet with common_args: arg_version={}, lib_version={}, "
+              "play_startup_sound={}, size={}, system_tick={}, theme_color={}",
+              common_args.arguments_version, common_args.library_version,
+              common_args.play_startup_sound, common_args.size, common_args.system_tick,
+              common_args.theme_color);
 
-    constexpr std::array<WebAppletExecutor, SHIM_KIND_COUNT> functions{
-        nullptr, &WebBrowser::ExecuteShop,
-        nullptr, &WebBrowser::ExecuteOffline,
-        nullptr, nullptr,
-        nullptr, nullptr,
-    };
+    web_applet_version = WebAppletVersion{common_args.library_version};
+
+    const auto web_arg_storage = broker.PopNormalDataToApplet();
+    ASSERT(web_arg_storage != nullptr);
 
-    const auto index = static_cast<u32>(kind);
+    const auto& web_arg = web_arg_storage->GetData();
+    ASSERT_OR_EXECUTE(web_arg.size() >= sizeof(WebArgHeader), { return; });
 
-    if (index > functions.size() || functions[index] == nullptr) {
-        LOG_ERROR(Service_AM, "Invalid shim_kind={:08X}", index);
-        return;
+    web_arg_input_tlv_map = ReadWebArgs(web_arg, web_arg_header);
+
+    LOG_DEBUG(Service_AM, "WebArgHeader: total_tlv_entries={}, shim_kind={}",
+              web_arg_header.total_tlv_entries, web_arg_header.shim_kind);
+
+    ExtractSharedFonts(system);
+
+    switch (web_arg_header.shim_kind) {
+    case ShimKind::Shop:
+        InitializeShop();
+        break;
+    case ShimKind::Login:
+        InitializeLogin();
+        break;
+    case ShimKind::Offline:
+        InitializeOffline();
+        break;
+    case ShimKind::Share:
+        InitializeShare();
+        break;
+    case ShimKind::Web:
+        InitializeWeb();
+        break;
+    case ShimKind::Wifi:
+        InitializeWifi();
+        break;
+    case ShimKind::Lobby:
+        InitializeLobby();
+        break;
+    default:
+        UNREACHABLE_MSG("Invalid ShimKind={}", web_arg_header.shim_kind);
+        break;
+    }
 }
 
-    const auto function = functions[index];
-    (this->*function)();
+bool WebBrowser::TransactionComplete() const {
+    return complete;
 }
 
-void WebBrowser::InitializeShop() {
-    if (frontend_e_commerce == nullptr) {
-        LOG_ERROR(Service_AM, "Missing ECommerce Applet frontend!");
-        status = RESULT_UNKNOWN;
-        return;
+ResultCode WebBrowser::GetStatus() const {
+    return status;
 }
 
-    const auto user_id_data = args.find(WebArgTLVType::UserID);
+void WebBrowser::ExecuteInteractive() {
+    UNIMPLEMENTED_MSG("WebSession is not implemented");
+}
 
-    user_id = std::nullopt;
-    if (user_id_data != args.end()) {
-        user_id = u128{};
-        std::memcpy(user_id->data(), user_id_data->second.data(), sizeof(u128));
+void WebBrowser::Execute() {
+    switch (web_arg_header.shim_kind) {
+    case ShimKind::Shop:
+        ExecuteShop();
+        break;
+    case ShimKind::Login:
+        ExecuteLogin();
+        break;
+    case ShimKind::Offline:
+        ExecuteOffline();
+        break;
+    case ShimKind::Share:
+        ExecuteShare();
+        break;
+    case ShimKind::Web:
+        ExecuteWeb();
+        break;
+    case ShimKind::Wifi:
+        ExecuteWifi();
+        break;
+    case ShimKind::Lobby:
+        ExecuteLobby();
+        break;
+    default:
+        UNREACHABLE_MSG("Invalid ShimKind={}", web_arg_header.shim_kind);
+        WebBrowserExit(WebExitReason::EndButtonPressed);
+        break;
+    }
 }
 
-    const auto url = args.find(WebArgTLVType::ShopArgumentsURL);
+void WebBrowser::ExtractOfflineRomFS() {
+    LOG_DEBUG(Service_AM, "Extracting RomFS to {}", offline_cache_dir);
 
-    if (url == args.end()) {
-        LOG_ERROR(Service_AM, "Missing EShop Arguments URL for initialization!");
-        status = RESULT_UNKNOWN;
-        return;
-    }
+    const auto extracted_romfs_dir =
+        FileSys::ExtractRomFS(offline_romfs, FileSys::RomFSExtractionType::SingleDiscard);
 
-    std::vector<std::string> split_query;
-    Common::SplitString(Common::StringFromFixedZeroTerminatedBuffer(
-                            reinterpret_cast<const char*>(url->second.data()), url->second.size()),
-                        '?', split_query);
+    const auto temp_dir =
+        system.GetFilesystem()->CreateDirectory(offline_cache_dir, FileSys::Mode::ReadWrite);
 
-    // 2 -> Main URL '?' Query Parameters
-    // Less is missing info, More is malformed
-    if (split_query.size() != 2) {
-        LOG_ERROR(Service_AM, "EShop Arguments has more than one question mark, malformed");
-        status = RESULT_UNKNOWN;
-        return;
+    FileSys::VfsRawCopyD(extracted_romfs_dir, temp_dir);
 }
 
-    std::vector<std::string> queries;
-    Common::SplitString(split_query[1], '&', queries);
-
-    const auto split_single_query =
-        [](const std::string& in) -> std::pair<std::string, std::string> {
-        const auto index = in.find('=');
-        if (index == std::string::npos || index == in.size() - 1) {
-            return {in, ""};
+void WebBrowser::WebBrowserExit(WebExitReason exit_reason, std::string last_url) {
+    if ((web_arg_header.shim_kind == ShimKind::Share &&
+         web_applet_version >= WebAppletVersion::Version196608) ||
+        (web_arg_header.shim_kind == ShimKind::Web &&
+         web_applet_version >= WebAppletVersion::Version524288)) {
+        // TODO: Push Output TLVs instead of a WebCommonReturnValue
     }
 
-        return {in.substr(0, index), in.substr(index + 1)};
-    };
+    WebCommonReturnValue web_common_return_value;
 
-    std::transform(queries.begin(), queries.end(),
-                   std::inserter(shop_query, std::next(shop_query.begin())), split_single_query);
+    web_common_return_value.exit_reason = exit_reason;
+    std::memcpy(&web_common_return_value.last_url, last_url.data(), last_url.size());
+    web_common_return_value.last_url_size = last_url.size();
 
-    const auto scene = shop_query.find("scene");
+    LOG_DEBUG(Service_AM, "WebCommonReturnValue: exit_reason={}, last_url={}, last_url_size={}",
+              exit_reason, last_url, last_url.size());
 
-    if (scene == shop_query.end()) {
-        LOG_ERROR(Service_AM, "No scene parameter was passed via shop query!");
-        status = RESULT_UNKNOWN;
-        return;
+    complete = true;
+    std::vector<u8> out_data(sizeof(WebCommonReturnValue));
+    std::memcpy(out_data.data(), &web_common_return_value, out_data.size());
+    broker.PushNormalDataFromApplet(std::make_shared<IStorage>(system, std::move(out_data)));
+    broker.SignalStateChanged();
 }
 
-    const std::map<std::string, ShopWebTarget, std::less<>> target_map{
-        {"product_detail", ShopWebTarget::ApplicationInfo},
-        {"aocs", ShopWebTarget::AddOnContentList},
-        {"subscriptions", ShopWebTarget::SubscriptionList},
-        {"consumption", ShopWebTarget::ConsumableItemList},
-        {"settings", ShopWebTarget::Settings},
-        {"top", ShopWebTarget::Home},
-    };
-
-    const auto target = target_map.find(scene->second);
-    if (target == target_map.end()) {
-        LOG_ERROR(Service_AM, "Scene for shop query is invalid! (scene={})", scene->second);
-        status = RESULT_UNKNOWN;
-        return;
+bool WebBrowser::InputTLVExistsInMap(WebArgInputTLVType input_tlv_type) const {
+    return web_arg_input_tlv_map.find(input_tlv_type) != web_arg_input_tlv_map.end();
 }
 
-    shop_web_target = target->second;
+std::optional<std::vector<u8>> WebBrowser::GetInputTLVData(WebArgInputTLVType input_tlv_type) {
+    const auto map_it = web_arg_input_tlv_map.find(input_tlv_type);
 
-    const auto title_id_data = shop_query.find("dst_app_id");
-    if (title_id_data != shop_query.end()) {
-        title_id = std::stoull(title_id_data->second, nullptr, 0x10);
+    if (map_it == web_arg_input_tlv_map.end()) {
+        return std::nullopt;
     }
 
-    const auto mode_data = shop_query.find("mode");
-    if (mode_data != shop_query.end()) {
-        shop_full_display = mode_data->second == "full";
-    }
+    return map_it->second;
 }
 
+void WebBrowser::InitializeShop() {}
+
+void WebBrowser::InitializeLogin() {}
+
 void WebBrowser::InitializeOffline() {
-    if (args.find(WebArgTLVType::DocumentPath) == args.end() ||
-        args.find(WebArgTLVType::DocumentKind) == args.end() ||
-        args.find(WebArgTLVType::ApplicationID) == args.end()) {
-        status = RESULT_UNKNOWN;
-        LOG_ERROR(Service_AM, "Missing necessary parameters for initialization!");
-    }
+    const auto document_path =
+        ParseStringValue(GetInputTLVData(WebArgInputTLVType::DocumentPath).value());
 
-    const auto url_data = args[WebArgTLVType::DocumentPath];
-    filename = Common::StringFromFixedZeroTerminatedBuffer(
-        reinterpret_cast<const char*>(url_data.data()), url_data.size());
+    const auto document_kind =
+        ParseRawValue<DocumentKind>(GetInputTLVData(WebArgInputTLVType::DocumentKind).value());
 
-    OfflineWebSource source;
-    ASSERT(args[WebArgTLVType::DocumentKind].size() >= 4);
-    std::memcpy(&source, args[WebArgTLVType::DocumentKind].data(), sizeof(OfflineWebSource));
+    std::string additional_paths;
 
-    constexpr std::array<const char*, 3> WEB_SOURCE_NAMES{
+    switch (document_kind) {
+    case DocumentKind::OfflineHtmlPage:
+    default:
+        title_id = system.CurrentProcess()->GetTitleID();
+        nca_type = FileSys::ContentRecordType::HtmlDocument;
+        additional_paths = "html-document";
+        break;
+    case DocumentKind::ApplicationLegalInformation:
+        title_id = ParseRawValue<u64>(GetInputTLVData(WebArgInputTLVType::ApplicationID).value());
+        nca_type = FileSys::ContentRecordType::LegalInformation;
+        break;
+    case DocumentKind::SystemDataPage:
+        title_id = ParseRawValue<u64>(GetInputTLVData(WebArgInputTLVType::SystemDataID).value());
+        nca_type = FileSys::ContentRecordType::Data;
+        break;
+    }
+
+    static constexpr std::array<const char*, 3> RESOURCE_TYPES{
         "manual",
-        "legal",
-        "system",
+        "legal_information",
+        "system_data",
     };
 
-    temporary_dir =
-        Common::FS::SanitizePath(Common::FS::GetUserPath(Common::FS::UserPath::CacheDir) +
-                                     "web_applet_" + WEB_SOURCE_NAMES[static_cast<u32>(source) - 1],
+    offline_cache_dir = Common::FS::SanitizePath(
+        fmt::format("{}/offline_web_applet_{}/{:016X}",
+                    Common::FS::GetUserPath(Common::FS::UserPath::CacheDir),
+                    RESOURCE_TYPES[static_cast<u32>(document_kind) - 1], title_id),
+        Common::FS::DirectorySeparator::PlatformDefault);
+
+    offline_document = Common::FS::SanitizePath(
+        fmt::format("{}/{}/{}", offline_cache_dir, additional_paths, document_path),
         Common::FS::DirectorySeparator::PlatformDefault);
-    Common::FS::DeleteDirRecursively(temporary_dir);
-
-    u64 title_id = 0; // 0 corresponds to current process
-    ASSERT(args[WebArgTLVType::ApplicationID].size() >= 0x8);
-    std::memcpy(&title_id, args[WebArgTLVType::ApplicationID].data(), sizeof(u64));
-    FileSys::ContentRecordType type = FileSys::ContentRecordType::Data;
-
-    switch (source) {
-    case OfflineWebSource::OfflineHtmlPage:
-        // While there is an AppID TLV field, in official SW this is always ignored.
-        title_id = 0;
-        type = FileSys::ContentRecordType::HtmlDocument;
-        break;
-    case OfflineWebSource::ApplicationLegalInformation:
-        type = FileSys::ContentRecordType::LegalInformation;
-        break;
-    case OfflineWebSource::SystemDataPage:
-        type = FileSys::ContentRecordType::Data;
-        break;
 }
 
-    if (title_id == 0) {
-        title_id = system.CurrentProcess()->GetTitleID();
+void WebBrowser::InitializeShare() {}
+
+void WebBrowser::InitializeWeb() {
+    external_url = ParseStringValue(GetInputTLVData(WebArgInputTLVType::InitialURL).value());
 }
 
-    offline_romfs = GetApplicationRomFS(system, title_id, type);
-    if (offline_romfs == nullptr) {
-        status = RESULT_UNKNOWN;
-        LOG_ERROR(Service_AM, "Failed to find offline data for request!");
+void WebBrowser::InitializeWifi() {}
+
+void WebBrowser::InitializeLobby() {}
+
+void WebBrowser::ExecuteShop() {
+    LOG_WARNING(Service_AM, "(STUBBED) called, Shop Applet is not implemented");
+    WebBrowserExit(WebExitReason::EndButtonPressed);
 }
 
-    std::string path_additional_directory;
-    if (source == OfflineWebSource::OfflineHtmlPage) {
-        path_additional_directory = std::string(DIR_SEP).append("html-document");
+void WebBrowser::ExecuteLogin() {
+    LOG_WARNING(Service_AM, "(STUBBED) called, Login Applet is not implemented");
+    WebBrowserExit(WebExitReason::EndButtonPressed);
 }
 
-    filename =
-        Common::FS::SanitizePath(temporary_dir + path_additional_directory + DIR_SEP + filename,
+void WebBrowser::ExecuteOffline() {
+    const auto main_url = Common::FS::SanitizePath(GetMainURL(offline_document),
                                                    Common::FS::DirectorySeparator::PlatformDefault);
-}
 
-void WebBrowser::ExecuteShop() {
-    const auto callback = [this]() { Finalize(); };
+    if (!Common::FS::Exists(main_url)) {
+        offline_romfs = GetOfflineRomFS(system, title_id, nca_type);
 
-    const auto check_optional_parameter = [this](const auto& p) {
-        if (!p.has_value()) {
-            LOG_ERROR(Service_AM, "Missing one or more necessary parameters for execution!");
-            status = RESULT_UNKNOWN;
-            return false;
+        if (offline_romfs == nullptr) {
+            LOG_ERROR(Service_AM,
+                      "RomFS with title_id={:016X} and nca_type={} cannot be extracted!", title_id,
+                      nca_type);
+            WebBrowserExit(WebExitReason::WindowClosed);
+            return;
+        }
     }
 
-        return true;
-    };
+    LOG_INFO(Service_AM, "Opening offline document at {}", offline_document);
 
-    switch (shop_web_target) {
-    case ShopWebTarget::ApplicationInfo:
-        if (!check_optional_parameter(title_id))
-            return;
-        frontend_e_commerce->ShowApplicationInformation(callback, *title_id, user_id,
-                                                        shop_full_display, shop_extra_parameter);
-        break;
-    case ShopWebTarget::AddOnContentList:
-        if (!check_optional_parameter(title_id))
-            return;
-        frontend_e_commerce->ShowAddOnContentList(callback, *title_id, user_id, shop_full_display);
-        break;
-    case ShopWebTarget::ConsumableItemList:
-        if (!check_optional_parameter(title_id))
-            return;
-        frontend_e_commerce->ShowConsumableItemList(callback, *title_id, user_id);
-        break;
-    case ShopWebTarget::Home:
-        if (!check_optional_parameter(user_id))
-            return;
-        if (!check_optional_parameter(shop_full_display))
-            return;
-        frontend_e_commerce->ShowShopHome(callback, *user_id, *shop_full_display);
-        break;
-    case ShopWebTarget::Settings:
-        if (!check_optional_parameter(user_id))
-            return;
-        if (!check_optional_parameter(shop_full_display))
-            return;
-        frontend_e_commerce->ShowSettings(callback, *user_id, *shop_full_display);
-        break;
-    case ShopWebTarget::SubscriptionList:
-        if (!check_optional_parameter(title_id))
-            return;
-        frontend_e_commerce->ShowSubscriptionList(callback, *title_id, user_id);
-        break;
-    default:
-        UNREACHABLE();
+    frontend.OpenLocalWebPage(
+        offline_document, [this] { ExtractOfflineRomFS(); },
+        [this](WebExitReason exit_reason, std::string last_url) {
+            WebBrowserExit(exit_reason, last_url);
+        });
+}
+
+void WebBrowser::ExecuteShare() {
+    LOG_WARNING(Service_AM, "(STUBBED) called, Share Applet is not implemented");
+    WebBrowserExit(WebExitReason::EndButtonPressed);
 }
+
+void WebBrowser::ExecuteWeb() {
+    LOG_INFO(Service_AM, "Opening external URL at {}", external_url);
+
+    frontend.OpenExternalWebPage(external_url,
+                                 [this](WebExitReason exit_reason, std::string last_url) {
+                                     WebBrowserExit(exit_reason, last_url);
+                                 });
 }
 
-void WebBrowser::ExecuteOffline() {
-    frontend.OpenPageLocal(
-        filename, [this] { UnpackRomFS(); }, [this] { Finalize(); });
+void WebBrowser::ExecuteWifi() {
+    LOG_WARNING(Service_AM, "(STUBBED) called, Wifi Applet is not implemented");
+    WebBrowserExit(WebExitReason::EndButtonPressed);
 }
 
+void WebBrowser::ExecuteLobby() {
+    LOG_WARNING(Service_AM, "(STUBBED) called, Lobby Applet is not implemented");
+    WebBrowserExit(WebExitReason::EndButtonPressed);
+}
 } // namespace Service::AM::Applets

src/core/hle/service/am/applets/web_browser.h

@@ -1,28 +1,31 @@
-// Copyright 2018 yuzu emulator team
+// Copyright 2020 yuzu Emulator Project
 // Licensed under GPLv2 or any later version
 // Refer to the license.txt file included.
 
 #pragma once
 
-#include <map>
+#include <optional>
+
+#include "common/common_funcs.h"
+#include "common/common_types.h"
 #include "core/file_sys/vfs_types.h"
-#include "core/hle/service/am/am.h"
+#include "core/hle/result.h"
 #include "core/hle/service/am/applets/applets.h"
+#include "core/hle/service/am/applets/web_types.h"
 
 namespace Core {
 class System;
 }
 
-namespace Service::AM::Applets {
+namespace FileSys {
+enum class ContentRecordType : u8;
+}
 
-enum class ShimKind : u32;
-enum class ShopWebTarget;
-enum class WebArgTLVType : u16;
+namespace Service::AM::Applets {
 
 class WebBrowser final : public Applet {
 public:
-    WebBrowser(Core::System& system_, Core::Frontend::WebBrowserApplet& frontend_,
-               Core::Frontend::ECommerceApplet* frontend_e_commerce_ = nullptr);
+    WebBrowser(Core::System& system_, const Core::Frontend::WebBrowserApplet& frontend_);
 
     ~WebBrowser() override;
 
@@ -33,49 +36,50 @@ public:
     void ExecuteInteractive() override;
     void Execute() override;
 
-    // Callback to be fired when the frontend needs the manual RomFS unpacked to temporary
-    // directory. This is a blocking call and may take a while as some manuals can be up to 100MB in
-    // size. Attempting to access files at filename before invocation is likely to not work.
-    void UnpackRomFS();
+    void ExtractOfflineRomFS();
 
-    // Callback to be fired when the frontend is finished browsing. This will delete the temporary
-    // manual RomFS extracted files, so ensure this is only called at actual finalization.
-    void Finalize();
+    void WebBrowserExit(WebExitReason exit_reason, std::string last_url = "");
 
 private:
-    void InitializeInternal();
-    void ExecuteInternal();
+    bool InputTLVExistsInMap(WebArgInputTLVType input_tlv_type) const;
 
-    // Specific initializers for the types of web applets
+    std::optional<std::vector<u8>> GetInputTLVData(WebArgInputTLVType input_tlv_type);
+
+    // Initializers for the various types of browser applets
     void InitializeShop();
+    void InitializeLogin();
     void InitializeOffline();
+    void InitializeShare();
+    void InitializeWeb();
+    void InitializeWifi();
+    void InitializeLobby();
 
-    // Specific executors for the types of web applets
+    // Executors for the various types of browser applets
     void ExecuteShop();
+    void ExecuteLogin();
     void ExecuteOffline();
+    void ExecuteShare();
+    void ExecuteWeb();
+    void ExecuteWifi();
+    void ExecuteLobby();
 
-    Core::Frontend::WebBrowserApplet& frontend;
-
-    // Extra frontends for specialized functions
-    Core::Frontend::ECommerceApplet* frontend_e_commerce;
+    const Core::Frontend::WebBrowserApplet& frontend;
 
-    bool complete = false;
-    bool unpacked = false;
-    ResultCode status = RESULT_SUCCESS;
+    bool complete{false};
+    ResultCode status{RESULT_SUCCESS};
 
-    ShimKind kind;
-    std::map<WebArgTLVType, std::vector<u8>> args;
+    WebAppletVersion web_applet_version;
+    WebExitReason web_exit_reason;
+    WebArgHeader web_arg_header;
+    WebArgInputTLVMap web_arg_input_tlv_map;
 
+    u64 title_id;
+    FileSys::ContentRecordType nca_type;
+    std::string offline_cache_dir;
+    std::string offline_document;
     FileSys::VirtualFile offline_romfs;
-    std::string temporary_dir;
-    std::string filename;
-
-    ShopWebTarget shop_web_target;
-    std::map<std::string, std::string, std::less<>> shop_query;
-    std::optional<u64> title_id = 0;
-    std::optional<u128> user_id;
-    std::optional<bool> shop_full_display;
-    std::string shop_extra_parameter;
+
+    std::string external_url;
 
     Core::System& system;
 };

src/core/hle/service/am/applets/web_types.h

@@ -0,0 +1,178 @@
+// Copyright 2020 yuzu Emulator Project
+// Licensed under GPLv2 or any later version
+// Refer to the license.txt file included.
+
+#pragma once
+
+#include <array>
+#include <unordered_map>
+#include <vector>
+
+#include "common/common_funcs.h"
+#include "common/common_types.h"
+#include "common/swap.h"
+
+namespace Service::AM::Applets {
+
+enum class WebAppletVersion : u32_le {
+    Version0 = 0x0,          // Only used by WifiWebAuthApplet
+    Version131072 = 0x20000, // 1.0.0 - 2.3.0
+    Version196608 = 0x30000, // 3.0.0 - 4.1.0
+    Version327680 = 0x50000, // 5.0.0 - 5.1.0
+    Version393216 = 0x60000, // 6.0.0 - 7.0.1
+    Version524288 = 0x80000, // 8.0.0+
+};
+
+enum class ShimKind : u32 {
+    Shop = 1,
+    Login = 2,
+    Offline = 3,
+    Share = 4,
+    Web = 5,
+    Wifi = 6,
+    Lobby = 7,
+};
+
+enum class WebExitReason : u32 {
+    EndButtonPressed = 0,
+    BackButtonPressed = 1,
+    ExitRequested = 2,
+    CallbackURL = 3,
+    WindowClosed = 4,
+    ErrorDialog = 7,
+};
+
+enum class WebArgInputTLVType : u16 {
+    InitialURL = 0x1,
+    CallbackURL = 0x3,
+    CallbackableURL = 0x4,
+    ApplicationID = 0x5,
+    DocumentPath = 0x6,
+    DocumentKind = 0x7,
+    SystemDataID = 0x8,
+    ShareStartPage = 0x9,
+    Whitelist = 0xA,
+    News = 0xB,
+    UserID = 0xE,
+    AlbumEntry0 = 0xF,
+    ScreenShotEnabled = 0x10,
+    EcClientCertEnabled = 0x11,
+    PlayReportEnabled = 0x13,
+    BootDisplayKind = 0x17,
+    BackgroundKind = 0x18,
+    FooterEnabled = 0x19,
+    PointerEnabled = 0x1A,
+    LeftStickMode = 0x1B,
+    KeyRepeatFrame1 = 0x1C,
+    KeyRepeatFrame2 = 0x1D,
+    BootAsMediaPlayerInverted = 0x1E,
+    DisplayURLKind = 0x1F,
+    BootAsMediaPlayer = 0x21,
+    ShopJumpEnabled = 0x22,
+    MediaAutoPlayEnabled = 0x23,
+    LobbyParameter = 0x24,
+    ApplicationAlbumEntry = 0x26,
+    JsExtensionEnabled = 0x27,
+    AdditionalCommentText = 0x28,
+    TouchEnabledOnContents = 0x29,
+    UserAgentAdditionalString = 0x2A,
+    AdditionalMediaData0 = 0x2B,
+    MediaPlayerAutoCloseEnabled = 0x2C,
+    PageCacheEnabled = 0x2D,
+    WebAudioEnabled = 0x2E,
+    YouTubeVideoWhitelist = 0x31,
+    FooterFixedKind = 0x32,
+    PageFadeEnabled = 0x33,
+    MediaCreatorApplicationRatingAge = 0x34,
+    BootLoadingIconEnabled = 0x35,
+    PageScrollIndicatorEnabled = 0x36,
+    MediaPlayerSpeedControlEnabled = 0x37,
+    AlbumEntry1 = 0x38,
+    AlbumEntry2 = 0x39,
+    AlbumEntry3 = 0x3A,
+    AdditionalMediaData1 = 0x3B,
+    AdditionalMediaData2 = 0x3C,
+    AdditionalMediaData3 = 0x3D,
+    BootFooterButton = 0x3E,
+    OverrideWebAudioVolume = 0x3F,
+    OverrideMediaAudioVolume = 0x40,
+    BootMode = 0x41,
+    WebSessionEnabled = 0x42,
+    MediaPlayerOfflineEnabled = 0x43,
+};
+
+enum class WebArgOutputTLVType : u16 {
+    ShareExitReason = 0x1,
+    LastURL = 0x2,
+    LastURLSize = 0x3,
+    SharePostResult = 0x4,
+    PostServiceName = 0x5,
+    PostServiceNameSize = 0x6,
+    PostID = 0x7,
+    PostIDSize = 0x8,
+    MediaPlayerAutoClosedByCompletion = 0x9,
+};
+
+enum class DocumentKind : u32 {
+    OfflineHtmlPage = 1,
+    ApplicationLegalInformation = 2,
+    SystemDataPage = 3,
+};
+
+enum class ShareStartPage : u32 {
+    Default,
+    Settings,
+};
+
+enum class BootDisplayKind : u32 {
+    Default,
+    White,
+    Black,
+};
+
+enum class BackgroundKind : u32 {
+    Default,
+};
+
+enum class LeftStickMode : u32 {
+    Pointer,
+    Cursor,
+};
+
+enum class WebSessionBootMode : u32 {
+    AllForeground,
+    AllForegroundInitiallyHidden,
+};
+
+struct WebArgHeader {
+    u16 total_tlv_entries{};
+    INSERT_PADDING_BYTES(2);
+    ShimKind shim_kind{};
+};
+static_assert(sizeof(WebArgHeader) == 0x8, "WebArgHeader has incorrect size.");
+
+struct WebArgInputTLV {
+    WebArgInputTLVType input_tlv_type{};
+    u16 arg_data_size{};
+    INSERT_PADDING_WORDS(1);
+};
+static_assert(sizeof(WebArgInputTLV) == 0x8, "WebArgInputTLV has incorrect size.");
+
+struct WebArgOutputTLV {
+    WebArgOutputTLVType output_tlv_type{};
+    u16 arg_data_size{};
+    INSERT_PADDING_WORDS(1);
+};
+static_assert(sizeof(WebArgOutputTLV) == 0x8, "WebArgOutputTLV has incorrect size.");
+
+struct WebCommonReturnValue {
+    WebExitReason exit_reason{};
+    INSERT_PADDING_WORDS(1);
+    std::array<char, 0x1000> last_url{};
+    u64 last_url_size{};
+};
+static_assert(sizeof(WebCommonReturnValue) == 0x1010, "WebCommonReturnValue has incorrect size.");
+
+using WebArgInputTLVMap = std::unordered_map<WebArgInputTLVType, std::vector<u8>>;
+
+} // namespace Service::AM::Applets

src/core/hle/service/hid/controllers/npad.cpp

@@ -1058,7 +1058,7 @@ void Controller_NPad::ClearAllControllers() {
 }
 
 u32 Controller_NPad::GetAndResetPressState() {
-    return std::exchange(press_state, 0);
+    return press_state.exchange(0);
 }
 
 bool Controller_NPad::IsControllerSupported(NPadControllerType controller) const {

src/core/hle/service/hid/controllers/npad.h

@@ -5,6 +5,7 @@
 #pragma once
 
 #include <array>
+#include <atomic>
 #include "common/bit_field.h"
 #include "common/common_types.h"
 #include "core/frontend/input.h"
@@ -415,7 +416,7 @@ private:
     bool IsControllerSupported(NPadControllerType controller) const;
     void RequestPadStateUpdate(u32 npad_id);
 
-    u32 press_state{};
+    std::atomic<u32> press_state{};
 
     NpadStyleSet style{};
     std::array<NPadEntry, 10> shared_memory_entries{};

src/core/hle/service/ns/ns.cpp

@@ -673,7 +673,7 @@ public:
     explicit NS_VM(Core::System& system_) : ServiceFramework{system_, "ns:vm"} {
         // clang-format off
         static const FunctionInfo functions[] = {
-            {1200, nullptr, "NeedsUpdateVulnerability"},
+            {1200, &NS_VM::NeedsUpdateVulnerability, "NeedsUpdateVulnerability"},
             {1201, nullptr, "UpdateSafeSystemVersionForDebug"},
             {1202, nullptr, "GetSafeSystemVersion"},
         };
@@ -681,6 +681,15 @@ public:
 
         RegisterHandlers(functions);
     }
+
+private:
+    void NeedsUpdateVulnerability(Kernel::HLERequestContext& ctx) {
+        LOG_WARNING(Service_NS, "(STUBBED) called");
+
+        IPC::ResponseBuilder rb{ctx, 3};
+        rb.Push(RESULT_SUCCESS);
+        rb.Push(false);
+    }
 };
 
 void InstallInterfaces(SM::ServiceManager& service_manager, Core::System& system) {

src/core/hle/service/ns/pl_u.cpp

@@ -27,29 +27,11 @@
 
 namespace Service::NS {
 
-enum class FontArchives : u64 {
-    Extension = 0x0100000000000810,
-    Standard = 0x0100000000000811,
-    Korean = 0x0100000000000812,
-    ChineseTraditional = 0x0100000000000813,
-    ChineseSimple = 0x0100000000000814,
-};
-
 struct FontRegion {
     u32 offset;
     u32 size;
 };
 
-constexpr std::array<std::pair<FontArchives, const char*>, 7> SHARED_FONTS{
-    std::make_pair(FontArchives::Standard, "nintendo_udsg-r_std_003.bfttf"),
-    std::make_pair(FontArchives::ChineseSimple, "nintendo_udsg-r_org_zh-cn_003.bfttf"),
-    std::make_pair(FontArchives::ChineseSimple, "nintendo_udsg-r_ext_zh-cn_003.bfttf"),
-    std::make_pair(FontArchives::ChineseTraditional, "nintendo_udjxh-db_zh-tw_003.bfttf"),
-    std::make_pair(FontArchives::Korean, "nintendo_udsg-r_ko_003.bfttf"),
-    std::make_pair(FontArchives::Extension, "nintendo_ext_003.bfttf"),
-    std::make_pair(FontArchives::Extension, "nintendo_ext2_003.bfttf"),
-};
-
 // The below data is specific to shared font data dumped from Switch on f/w 2.2
 // Virtual address and offsets/sizes likely will vary by dump
 [[maybe_unused]] constexpr VAddr SHARED_FONT_MEM_VADDR{0x00000009d3016000ULL};
@@ -80,6 +62,18 @@ static void DecryptSharedFont(const std::vector<u32>& input, Kernel::PhysicalMem
     offset += transformed_font.size() * sizeof(u32);
 }
 
+void DecryptSharedFontToTTF(const std::vector<u32>& input, std::vector<u8>& output) {
+    ASSERT_MSG(input[0] == EXPECTED_MAGIC, "Failed to derive key, unexpected magic number");
+
+    const u32 KEY = input[0] ^ EXPECTED_RESULT; // Derive key using an inverse xor
+    std::vector<u32> transformed_font(input.size());
+    // TODO(ogniK): Figure out a better way to do this
+    std::transform(input.begin(), input.end(), transformed_font.begin(),
+                   [&KEY](u32 font_data) { return Common::swap32(font_data ^ KEY); });
+    transformed_font[1] = Common::swap32(transformed_font[1]) ^ KEY; // "re-encrypt" the size
+    std::memcpy(output.data(), transformed_font.data() + 2, transformed_font.size() * sizeof(u32));
+}
+
 void EncryptSharedFont(const std::vector<u32>& input, std::vector<u8>& output,
                        std::size_t& offset) {
     ASSERT_MSG(offset + (input.size() * sizeof(u32)) < SHARED_FONT_MEM_SIZE,

src/core/hle/service/ns/pl_u.h

@@ -16,6 +16,25 @@ class FileSystemController;
 
 namespace NS {
 
+enum class FontArchives : u64 {
+    Extension = 0x0100000000000810,
+    Standard = 0x0100000000000811,
+    Korean = 0x0100000000000812,
+    ChineseTraditional = 0x0100000000000813,
+    ChineseSimple = 0x0100000000000814,
+};
+
+constexpr std::array<std::pair<FontArchives, const char*>, 7> SHARED_FONTS{
+    std::make_pair(FontArchives::Standard, "nintendo_udsg-r_std_003.bfttf"),
+    std::make_pair(FontArchives::ChineseSimple, "nintendo_udsg-r_org_zh-cn_003.bfttf"),
+    std::make_pair(FontArchives::ChineseSimple, "nintendo_udsg-r_ext_zh-cn_003.bfttf"),
+    std::make_pair(FontArchives::ChineseTraditional, "nintendo_udjxh-db_zh-tw_003.bfttf"),
+    std::make_pair(FontArchives::Korean, "nintendo_udsg-r_ko_003.bfttf"),
+    std::make_pair(FontArchives::Extension, "nintendo_ext_003.bfttf"),
+    std::make_pair(FontArchives::Extension, "nintendo_ext2_003.bfttf"),
+};
+
+void DecryptSharedFontToTTF(const std::vector<u32>& input, std::vector<u8>& output);
 void EncryptSharedFont(const std::vector<u32>& input, std::vector<u8>& output, std::size_t& offset);
 
 class PL_U final : public ServiceFramework<PL_U> {

src/yuzu/CMakeLists.txt

@@ -141,6 +141,8 @@ add_executable(yuzu
     util/limitable_input_dialog.h
     util/sequence_dialog/sequence_dialog.cpp
     util/sequence_dialog/sequence_dialog.h
+    util/url_request_interceptor.cpp
+    util/url_request_interceptor.h
     util/util.cpp
     util/util.h
     compatdb.cpp

src/yuzu/applets/web_browser.cpp

@@ -1,115 +1,414 @@
-// Copyright 2018 yuzu Emulator Project
+// Copyright 2020 yuzu Emulator Project
 // Licensed under GPLv2 or any later version
 // Refer to the license.txt file included.
 
-#include <mutex>
-
+#ifdef YUZU_USE_QT_WEB_ENGINE
 #include <QKeyEvent>
 
-#include "core/hle/lock.h"
+#include <QWebEngineProfile>
+#include <QWebEngineScript>
+#include <QWebEngineScriptCollection>
+#include <QWebEngineSettings>
+#include <QWebEngineUrlScheme>
+#endif
+
+#include "common/file_util.h"
+#include "core/core.h"
+#include "core/frontend/input_interpreter.h"
+#include "input_common/keyboard.h"
+#include "input_common/main.h"
 #include "yuzu/applets/web_browser.h"
+#include "yuzu/applets/web_browser_scripts.h"
 #include "yuzu/main.h"
+#include "yuzu/util/url_request_interceptor.h"
 
 #ifdef YUZU_USE_QT_WEB_ENGINE
 
-constexpr char NX_SHIM_INJECT_SCRIPT[] = R"(
-    window.nx = {};
-    window.nx.playReport = {};
-    window.nx.playReport.setCounterSetIdentifier = function () {
-        console.log("nx.playReport.setCounterSetIdentifier called - unimplemented");
-    };
+namespace {
 
-    window.nx.playReport.incrementCounter = function () {
-        console.log("nx.playReport.incrementCounter called - unimplemented");
-    };
+constexpr int HIDButtonToKey(HIDButton button) {
+    switch (button) {
+    case HIDButton::DLeft:
+    case HIDButton::LStickLeft:
+        return Qt::Key_Left;
+    case HIDButton::DUp:
+    case HIDButton::LStickUp:
+        return Qt::Key_Up;
+    case HIDButton::DRight:
+    case HIDButton::LStickRight:
+        return Qt::Key_Right;
+    case HIDButton::DDown:
+    case HIDButton::LStickDown:
+        return Qt::Key_Down;
+    default:
+        return 0;
+    }
+}
 
-    window.nx.footer = {};
-    window.nx.footer.unsetAssign = function () {
-        console.log("nx.footer.unsetAssign called - unimplemented");
-    };
+} // Anonymous namespace
 
-    var yuzu_key_callbacks = [];
-    window.nx.footer.setAssign = function(key, discard1, func, discard2) {
-        switch (key) {
-        case 'A':
-            yuzu_key_callbacks[0] = func;
-            break;
-        case 'B':
-            yuzu_key_callbacks[1] = func;
+QtNXWebEngineView::QtNXWebEngineView(QWidget* parent, Core::System& system,
+                                     InputCommon::InputSubsystem* input_subsystem_)
+    : QWebEngineView(parent), input_subsystem{input_subsystem_},
+      url_interceptor(std::make_unique<UrlRequestInterceptor>()),
+      input_interpreter(std::make_unique<InputInterpreter>(system)),
+      default_profile{QWebEngineProfile::defaultProfile()},
+      global_settings{QWebEngineSettings::globalSettings()} {
+    QWebEngineScript gamepad;
+    QWebEngineScript window_nx;
+
+    gamepad.setName(QStringLiteral("gamepad_script.js"));
+    window_nx.setName(QStringLiteral("window_nx_script.js"));
+
+    gamepad.setSourceCode(QString::fromStdString(GAMEPAD_SCRIPT));
+    window_nx.setSourceCode(QString::fromStdString(WINDOW_NX_SCRIPT));
+
+    gamepad.setInjectionPoint(QWebEngineScript::DocumentCreation);
+    window_nx.setInjectionPoint(QWebEngineScript::DocumentCreation);
+
+    gamepad.setWorldId(QWebEngineScript::MainWorld);
+    window_nx.setWorldId(QWebEngineScript::MainWorld);
+
+    gamepad.setRunsOnSubFrames(true);
+    window_nx.setRunsOnSubFrames(true);
+
+    default_profile->scripts()->insert(gamepad);
+    default_profile->scripts()->insert(window_nx);
+
+    default_profile->setRequestInterceptor(url_interceptor.get());
+
+    global_settings->setAttribute(QWebEngineSettings::LocalContentCanAccessRemoteUrls, true);
+    global_settings->setAttribute(QWebEngineSettings::FullScreenSupportEnabled, true);
+    global_settings->setAttribute(QWebEngineSettings::AllowRunningInsecureContent, true);
+    global_settings->setAttribute(QWebEngineSettings::FocusOnNavigationEnabled, true);
+    global_settings->setAttribute(QWebEngineSettings::AllowWindowActivationFromJavaScript, true);
+    global_settings->setAttribute(QWebEngineSettings::ShowScrollBars, false);
+
+    global_settings->setFontFamily(QWebEngineSettings::StandardFont, QStringLiteral("Roboto"));
+
+    connect(
+        page(), &QWebEnginePage::windowCloseRequested, page(),
+        [this] {
+            if (page()->url() == url_interceptor->GetRequestedURL()) {
+                SetFinished(true);
+                SetExitReason(Service::AM::Applets::WebExitReason::WindowClosed);
+            }
+        },
+        Qt::QueuedConnection);
+}
+
+QtNXWebEngineView::~QtNXWebEngineView() {
+    SetFinished(true);
+    StopInputThread();
+}
+
+void QtNXWebEngineView::LoadLocalWebPage(std::string_view main_url,
+                                         std::string_view additional_args) {
+    is_local = true;
+
+    LoadExtractedFonts();
+    SetUserAgent(UserAgent::WebApplet);
+    SetFinished(false);
+    SetExitReason(Service::AM::Applets::WebExitReason::EndButtonPressed);
+    SetLastURL("http://localhost/");
+    StartInputThread();
+
+    load(QUrl(QUrl::fromLocalFile(QString::fromStdString(std::string(main_url))).toString() +
+              QString::fromStdString(std::string(additional_args))));
+}
+
+void QtNXWebEngineView::LoadExternalWebPage(std::string_view main_url,
+                                            std::string_view additional_args) {
+    is_local = false;
+
+    SetUserAgent(UserAgent::WebApplet);
+    SetFinished(false);
+    SetExitReason(Service::AM::Applets::WebExitReason::EndButtonPressed);
+    SetLastURL("http://localhost/");
+    StartInputThread();
+
+    load(QUrl(QString::fromStdString(std::string(main_url)) +
+              QString::fromStdString(std::string(additional_args))));
+}
+
+void QtNXWebEngineView::SetUserAgent(UserAgent user_agent) {
+    const QString user_agent_str = [user_agent] {
+        switch (user_agent) {
+        case UserAgent::WebApplet:
+        default:
+            return QStringLiteral("WebApplet");
+        case UserAgent::ShopN:
+            return QStringLiteral("ShopN");
+        case UserAgent::LoginApplet:
+            return QStringLiteral("LoginApplet");
+        case UserAgent::ShareApplet:
+            return QStringLiteral("ShareApplet");
+        case UserAgent::LobbyApplet:
+            return QStringLiteral("LobbyApplet");
+        case UserAgent::WifiWebAuthApplet:
+            return QStringLiteral("WifiWebAuthApplet");
+        }
+    }();
+
+    QWebEngineProfile::defaultProfile()->setHttpUserAgent(
+        QStringLiteral("Mozilla/5.0 (Nintendo Switch; %1) AppleWebKit/606.4 "
+                       "(KHTML, like Gecko) NF/6.0.1.15.4 NintendoBrowser/5.1.0.20389")
+            .arg(user_agent_str));
+}
+
+bool QtNXWebEngineView::IsFinished() const {
+    return finished;
+}
+
+void QtNXWebEngineView::SetFinished(bool finished_) {
+    finished = finished_;
+}
+
+Service::AM::Applets::WebExitReason QtNXWebEngineView::GetExitReason() const {
+    return exit_reason;
+}
+
+void QtNXWebEngineView::SetExitReason(Service::AM::Applets::WebExitReason exit_reason_) {
+    exit_reason = exit_reason_;
+}
+
+const std::string& QtNXWebEngineView::GetLastURL() const {
+    return last_url;
+}
+
+void QtNXWebEngineView::SetLastURL(std::string last_url_) {
+    last_url = std::move(last_url_);
+}
+
+QString QtNXWebEngineView::GetCurrentURL() const {
+    return url_interceptor->GetRequestedURL().toString();
+}
+
+void QtNXWebEngineView::hide() {
+    SetFinished(true);
+    StopInputThread();
+
+    QWidget::hide();
+}
+
+void QtNXWebEngineView::keyPressEvent(QKeyEvent* event) {
+    if (is_local) {
+        input_subsystem->GetKeyboard()->PressKey(event->key());
+    }
+}
+
+void QtNXWebEngineView::keyReleaseEvent(QKeyEvent* event) {
+    if (is_local) {
+        input_subsystem->GetKeyboard()->ReleaseKey(event->key());
+    }
+}
+
+template <HIDButton... T>
+void QtNXWebEngineView::HandleWindowFooterButtonPressedOnce() {
+    const auto f = [this](HIDButton button) {
+        if (input_interpreter->IsButtonPressedOnce(button)) {
+            page()->runJavaScript(
+                QStringLiteral("yuzu_key_callbacks[%1] == null;").arg(static_cast<u8>(button)),
+                [&](const QVariant& variant) {
+                    if (variant.toBool()) {
+                        switch (button) {
+                        case HIDButton::A:
+                            SendMultipleKeyPressEvents<Qt::Key_A, Qt::Key_Space, Qt::Key_Return>();
                             break;
-        case 'X':
-            yuzu_key_callbacks[2] = func;
+                        case HIDButton::B:
+                            SendKeyPressEvent(Qt::Key_B);
                             break;
-        case 'Y':
-            yuzu_key_callbacks[3] = func;
+                        case HIDButton::X:
+                            SendKeyPressEvent(Qt::Key_X);
                             break;
-        case 'L':
-            yuzu_key_callbacks[6] = func;
+                        case HIDButton::Y:
+                            SendKeyPressEvent(Qt::Key_Y);
                             break;
-        case 'R':
-            yuzu_key_callbacks[7] = func;
+                        default:
                             break;
                         }
+                    }
+                });
+
+            page()->runJavaScript(
+                QStringLiteral("if (yuzu_key_callbacks[%1] != null) { yuzu_key_callbacks[%1](); }")
+                    .arg(static_cast<u8>(button)));
+        }
     };
 
-    var applet_done = false;
-    window.nx.endApplet = function() {
-        applet_done = true;
+    (f(T), ...);
+}
+
+template <HIDButton... T>
+void QtNXWebEngineView::HandleWindowKeyButtonPressedOnce() {
+    const auto f = [this](HIDButton button) {
+        if (input_interpreter->IsButtonPressedOnce(button)) {
+            SendKeyPressEvent(HIDButtonToKey(button));
+        }
     };
 
-    window.onkeypress = function(e) { if (e.keyCode === 13) { applet_done = true; } };
-)";
+    (f(T), ...);
+}
+
+template <HIDButton... T>
+void QtNXWebEngineView::HandleWindowKeyButtonHold() {
+    const auto f = [this](HIDButton button) {
+        if (input_interpreter->IsButtonHeld(button)) {
+            SendKeyPressEvent(HIDButtonToKey(button));
+        }
+    };
+
+    (f(T), ...);
+}
+
+void QtNXWebEngineView::SendKeyPressEvent(int key) {
+    if (key == 0) {
+        return;
+    }
+
+    QCoreApplication::postEvent(focusProxy(),
+                                new QKeyEvent(QKeyEvent::KeyPress, key, Qt::NoModifier));
+    QCoreApplication::postEvent(focusProxy(),
+                                new QKeyEvent(QKeyEvent::KeyRelease, key, Qt::NoModifier));
+}
+
+void QtNXWebEngineView::StartInputThread() {
+    if (input_thread_running) {
+        return;
+    }
+
+    input_thread_running = true;
+    input_thread = std::thread(&QtNXWebEngineView::InputThread, this);
+}
+
+void QtNXWebEngineView::StopInputThread() {
+    if (is_local) {
+        QWidget::releaseKeyboard();
+    }
 
-QString GetNXShimInjectionScript() {
-    return QString::fromStdString(NX_SHIM_INJECT_SCRIPT);
+    input_thread_running = false;
+    if (input_thread.joinable()) {
+        input_thread.join();
+    }
 }
 
-NXInputWebEngineView::NXInputWebEngineView(QWidget* parent) : QWebEngineView(parent) {}
+void QtNXWebEngineView::InputThread() {
+    // Wait for 1 second before allowing any inputs to be processed.
+    std::this_thread::sleep_for(std::chrono::seconds(1));
 
-void NXInputWebEngineView::keyPressEvent(QKeyEvent* event) {
-    parent()->event(event);
+    if (is_local) {
+        QWidget::grabKeyboard();
     }
 
-void NXInputWebEngineView::keyReleaseEvent(QKeyEvent* event) {
-    parent()->event(event);
+    while (input_thread_running) {
+        input_interpreter->PollInput();
+
+        HandleWindowFooterButtonPressedOnce<HIDButton::A, HIDButton::B, HIDButton::X, HIDButton::Y,
+                                            HIDButton::L, HIDButton::R>();
+
+        HandleWindowKeyButtonPressedOnce<HIDButton::DLeft, HIDButton::DUp, HIDButton::DRight,
+                                         HIDButton::DDown, HIDButton::LStickLeft,
+                                         HIDButton::LStickUp, HIDButton::LStickRight,
+                                         HIDButton::LStickDown>();
+
+        HandleWindowKeyButtonHold<HIDButton::DLeft, HIDButton::DUp, HIDButton::DRight,
+                                  HIDButton::DDown, HIDButton::LStickLeft, HIDButton::LStickUp,
+                                  HIDButton::LStickRight, HIDButton::LStickDown>();
+
+        std::this_thread::sleep_for(std::chrono::milliseconds(50));
+    }
+}
+
+void QtNXWebEngineView::LoadExtractedFonts() {
+    QWebEngineScript nx_font_css;
+    QWebEngineScript load_nx_font;
+
+    const QString fonts_dir = QString::fromStdString(Common::FS::SanitizePath(
+        fmt::format("{}/fonts", Common::FS::GetUserPath(Common::FS::UserPath::CacheDir))));
+
+    nx_font_css.setName(QStringLiteral("nx_font_css.js"));
+    load_nx_font.setName(QStringLiteral("load_nx_font.js"));
+
+    nx_font_css.setSourceCode(
+        QString::fromStdString(NX_FONT_CSS)
+            .arg(fonts_dir + QStringLiteral("/FontStandard.ttf"))
+            .arg(fonts_dir + QStringLiteral("/FontChineseSimplified.ttf"))
+            .arg(fonts_dir + QStringLiteral("/FontExtendedChineseSimplified.ttf"))
+            .arg(fonts_dir + QStringLiteral("/FontChineseTraditional.ttf"))
+            .arg(fonts_dir + QStringLiteral("/FontKorean.ttf"))
+            .arg(fonts_dir + QStringLiteral("/FontNintendoExtended.ttf"))
+            .arg(fonts_dir + QStringLiteral("/FontNintendoExtended2.ttf")));
+    load_nx_font.setSourceCode(QString::fromStdString(LOAD_NX_FONT));
+
+    nx_font_css.setInjectionPoint(QWebEngineScript::DocumentReady);
+    load_nx_font.setInjectionPoint(QWebEngineScript::Deferred);
+
+    nx_font_css.setWorldId(QWebEngineScript::MainWorld);
+    load_nx_font.setWorldId(QWebEngineScript::MainWorld);
+
+    nx_font_css.setRunsOnSubFrames(true);
+    load_nx_font.setRunsOnSubFrames(true);
+
+    default_profile->scripts()->insert(nx_font_css);
+    default_profile->scripts()->insert(load_nx_font);
+
+    connect(
+        url_interceptor.get(), &UrlRequestInterceptor::FrameChanged, url_interceptor.get(),
+        [this] {
+            std::this_thread::sleep_for(std::chrono::milliseconds(50));
+            page()->runJavaScript(QString::fromStdString(LOAD_NX_FONT));
+        },
+        Qt::QueuedConnection);
 }
 
 #endif
 
 QtWebBrowser::QtWebBrowser(GMainWindow& main_window) {
-    connect(this, &QtWebBrowser::MainWindowOpenPage, &main_window, &GMainWindow::WebBrowserOpenPage,
-            Qt::QueuedConnection);
-    connect(&main_window, &GMainWindow::WebBrowserUnpackRomFS, this,
-            &QtWebBrowser::MainWindowUnpackRomFS, Qt::QueuedConnection);
-    connect(&main_window, &GMainWindow::WebBrowserFinishedBrowsing, this,
-            &QtWebBrowser::MainWindowFinishedBrowsing, Qt::QueuedConnection);
+    connect(this, &QtWebBrowser::MainWindowOpenWebPage, &main_window,
+            &GMainWindow::WebBrowserOpenWebPage, Qt::QueuedConnection);
+    connect(&main_window, &GMainWindow::WebBrowserExtractOfflineRomFS, this,
+            &QtWebBrowser::MainWindowExtractOfflineRomFS, Qt::QueuedConnection);
+    connect(&main_window, &GMainWindow::WebBrowserClosed, this,
+            &QtWebBrowser::MainWindowWebBrowserClosed, Qt::QueuedConnection);
 }
 
 QtWebBrowser::~QtWebBrowser() = default;
 
-void QtWebBrowser::OpenPageLocal(std::string_view url, std::function<void()> unpack_romfs_callback_,
-                                 std::function<void()> finished_callback_) {
-    unpack_romfs_callback = std::move(unpack_romfs_callback_);
-    finished_callback = std::move(finished_callback_);
+void QtWebBrowser::OpenLocalWebPage(
+    std::string_view local_url, std::function<void()> extract_romfs_callback_,
+    std::function<void(Service::AM::Applets::WebExitReason, std::string)> callback_) const {
+    extract_romfs_callback = std::move(extract_romfs_callback_);
+    callback = std::move(callback_);
+
+    const auto index = local_url.find('?');
+
+    if (index == std::string::npos) {
+        emit MainWindowOpenWebPage(local_url, "", true);
+    } else {
+        emit MainWindowOpenWebPage(local_url.substr(0, index), local_url.substr(index), true);
+    }
+}
+
+void QtWebBrowser::OpenExternalWebPage(
+    std::string_view external_url,
+    std::function<void(Service::AM::Applets::WebExitReason, std::string)> callback_) const {
+    callback = std::move(callback_);
+
+    const auto index = external_url.find('?');
 
-    const auto index = url.find('?');
     if (index == std::string::npos) {
-        emit MainWindowOpenPage(url, "");
+        emit MainWindowOpenWebPage(external_url, "", false);
     } else {
-        const auto front = url.substr(0, index);
-        const auto back = url.substr(index);
-        emit MainWindowOpenPage(front, back);
+        emit MainWindowOpenWebPage(external_url.substr(0, index), external_url.substr(index),
+                                   false);
     }
 }
 
-void QtWebBrowser::MainWindowUnpackRomFS() {
-    // Acquire the HLE mutex
-    std::lock_guard lock{HLE::g_hle_lock};
-    unpack_romfs_callback();
+void QtWebBrowser::MainWindowExtractOfflineRomFS() {
+    extract_romfs_callback();
 }
 
-void QtWebBrowser::MainWindowFinishedBrowsing() {
-    // Acquire the HLE mutex
-    std::lock_guard lock{HLE::g_hle_lock};
-    finished_callback();
+void QtWebBrowser::MainWindowWebBrowserClosed(Service::AM::Applets::WebExitReason exit_reason,
+                                              std::string last_url) {
+    callback(exit_reason, last_url);
 }

src/yuzu/applets/web_browser.h

@@ -1,10 +1,13 @@
-// Copyright 2018 yuzu Emulator Project
+// Copyright 2020 yuzu Emulator Project
 // Licensed under GPLv2 or any later version
 // Refer to the license.txt file included.
 
 #pragma once
 
-#include <functional>
+#include <atomic>
+#include <memory>
+#include <thread>
+
 #include <QObject>
 
 #ifdef YUZU_USE_QT_WEB_ENGINE
@@ -13,19 +16,172 @@
 
 #include "core/frontend/applets/web_browser.h"
 
+enum class HIDButton : u8;
+
 class GMainWindow;
+class InputInterpreter;
+class UrlRequestInterceptor;
+
+namespace Core {
+class System;
+}
+
+namespace InputCommon {
+class InputSubsystem;
+}
 
 #ifdef YUZU_USE_QT_WEB_ENGINE
 
-QString GetNXShimInjectionScript();
+enum class UserAgent {
+    WebApplet,
+    ShopN,
+    LoginApplet,
+    ShareApplet,
+    LobbyApplet,
+    WifiWebAuthApplet,
+};
+
+class QWebEngineProfile;
+class QWebEngineSettings;
+
+class QtNXWebEngineView : public QWebEngineView {
+    Q_OBJECT
 
-class NXInputWebEngineView : public QWebEngineView {
 public:
-    explicit NXInputWebEngineView(QWidget* parent = nullptr);
+    explicit QtNXWebEngineView(QWidget* parent, Core::System& system,
+                               InputCommon::InputSubsystem* input_subsystem_);
+    ~QtNXWebEngineView() override;
+
+    /**
+     * Loads a HTML document that exists locally. Cannot be used to load external websites.
+     *
+     * @param main_url The url to the file.
+     * @param additional_args Additional arguments appended to the main url.
+     */
+    void LoadLocalWebPage(std::string_view main_url, std::string_view additional_args);
+
+    /**
+     * Loads an external website. Cannot be used to load local urls.
+     *
+     * @param main_url The url to the website.
+     * @param additional_args Additional arguments appended to the main url.
+     */
+    void LoadExternalWebPage(std::string_view main_url, std::string_view additional_args);
+
+    /**
+     * Sets the background color of the web page.
+     *
+     * @param color The color to set.
+     */
+    void SetBackgroundColor(QColor color);
+
+    /**
+     * Sets the user agent of the web browser.
+     *
+     * @param user_agent The user agent enum.
+     */
+    void SetUserAgent(UserAgent user_agent);
+
+    [[nodiscard]] bool IsFinished() const;
+    void SetFinished(bool finished_);
+
+    [[nodiscard]] Service::AM::Applets::WebExitReason GetExitReason() const;
+    void SetExitReason(Service::AM::Applets::WebExitReason exit_reason_);
+
+    [[nodiscard]] const std::string& GetLastURL() const;
+    void SetLastURL(std::string last_url_);
+
+    /**
+     * This gets the current URL that has been requested by the webpage.
+     * This only applies to the main frame. Sub frames and other resources are ignored.
+     *
+     * @return Currently requested URL
+     */
+    [[nodiscard]] QString GetCurrentURL() const;
+
+public slots:
+    void hide();
 
 protected:
     void keyPressEvent(QKeyEvent* event) override;
     void keyReleaseEvent(QKeyEvent* event) override;
+
+private:
+    /**
+     * Handles button presses to execute functions assigned in yuzu_key_callbacks.
+     * yuzu_key_callbacks contains specialized functions for the buttons in the window footer
+     * that can be overriden by games to achieve desired functionality.
+     *
+     * @tparam HIDButton The list of buttons contained in yuzu_key_callbacks
+     */
+    template <HIDButton... T>
+    void HandleWindowFooterButtonPressedOnce();
+
+    /**
+     * Handles button presses and converts them into keyboard input.
+     * This should only be used to convert D-Pad or Analog Stick input into arrow keys.
+     *
+     * @tparam HIDButton The list of buttons that can be converted into keyboard input.
+     */
+    template <HIDButton... T>
+    void HandleWindowKeyButtonPressedOnce();
+
+    /**
+     * Handles button holds and converts them into keyboard input.
+     * This should only be used to convert D-Pad or Analog Stick input into arrow keys.
+     *
+     * @tparam HIDButton The list of buttons that can be converted into keyboard input.
+     */
+    template <HIDButton... T>
+    void HandleWindowKeyButtonHold();
+
+    /**
+     * Sends a key press event to QWebEngineView.
+     *
+     * @param key Qt key code.
+     */
+    void SendKeyPressEvent(int key);
+
+    /**
+     * Sends multiple key press events to QWebEngineView.
+     *
+     * @tparam int Qt key code.
+     */
+    template <int... T>
+    void SendMultipleKeyPressEvents() {
+        (SendKeyPressEvent(T), ...);
+    }
+
+    void StartInputThread();
+    void StopInputThread();
+
+    /// The thread where input is being polled and processed.
+    void InputThread();
+
+    /// Loads the extracted fonts using JavaScript.
+    void LoadExtractedFonts();
+
+    InputCommon::InputSubsystem* input_subsystem;
+
+    std::unique_ptr<UrlRequestInterceptor> url_interceptor;
+
+    std::unique_ptr<InputInterpreter> input_interpreter;
+
+    std::thread input_thread;
+
+    std::atomic<bool> input_thread_running{};
+
+    std::atomic<bool> finished{};
+
+    Service::AM::Applets::WebExitReason exit_reason{
+        Service::AM::Applets::WebExitReason::EndButtonPressed};
+
+    std::string last_url{"http://localhost/"};
+
+    bool is_local{};
+
+    QWebEngineProfile* default_profile;
+    QWebEngineSettings* global_settings;
 };
 
 #endif
@@ -34,19 +190,28 @@ class QtWebBrowser final : public QObject, public Core::Frontend::WebBrowserAppl
     Q_OBJECT
 
 public:
-    explicit QtWebBrowser(GMainWindow& main_window);
+    explicit QtWebBrowser(GMainWindow& parent);
     ~QtWebBrowser() override;
 
-    void OpenPageLocal(std::string_view url, std::function<void()> unpack_romfs_callback_,
-                       std::function<void()> finished_callback_) override;
+    void OpenLocalWebPage(std::string_view local_url, std::function<void()> extract_romfs_callback_,
+                          std::function<void(Service::AM::Applets::WebExitReason, std::string)>
+                              callback_) const override;
+
+    void OpenExternalWebPage(std::string_view external_url,
+                             std::function<void(Service::AM::Applets::WebExitReason, std::string)>
+                                 callback_) const override;
 
 signals:
-    void MainWindowOpenPage(std::string_view filename, std::string_view additional_args) const;
+    void MainWindowOpenWebPage(std::string_view main_url, std::string_view additional_args,
+                               bool is_local) const;
 
 private:
-    void MainWindowUnpackRomFS();
-    void MainWindowFinishedBrowsing();
+    void MainWindowExtractOfflineRomFS();
+
+    void MainWindowWebBrowserClosed(Service::AM::Applets::WebExitReason exit_reason,
+                                    std::string last_url);
+
+    mutable std::function<void()> extract_romfs_callback;
 
-    std::function<void()> unpack_romfs_callback;
-    std::function<void()> finished_callback;
+    mutable std::function<void(Service::AM::Applets::WebExitReason, std::string)> callback;
 };

src/yuzu/applets/web_browser_scripts.h

@@ -0,0 +1,193 @@
+// Copyright 2020 yuzu Emulator Project
+// Licensed under GPLv2 or any later version
+// Refer to the license.txt file included.
+
+#pragma once
+
+constexpr char NX_FONT_CSS[] = R"(
+(function() {
+    css = document.createElement('style');
+    css.type = 'text/css';
+    css.id = 'nx_font';
+    css.innerText = `
+/* FontStandard */
+@font-face {
+    font-family: 'FontStandard';
+    src: url('%1') format('truetype');
+}
+
+/* FontChineseSimplified */
+@font-face {
+    font-family: 'FontChineseSimplified';
+    src: url('%2') format('truetype');
+}
+
+/* FontExtendedChineseSimplified */
+@font-face {
+    font-family: 'FontExtendedChineseSimplified';
+    src: url('%3') format('truetype');
+}
+
+/* FontChineseTraditional */
+@font-face {
+    font-family: 'FontChineseTraditional';
+    src: url('%4') format('truetype');
+}
+
+/* FontKorean */
+@font-face {
+    font-family: 'FontKorean';
+    src: url('%5') format('truetype');
+}
+
+/* FontNintendoExtended */
+@font-face {
+    font-family: 'NintendoExt003';
+    src: url('%6') format('truetype');
+}
+
+/* FontNintendoExtended2 */
+@font-face {
+    font-family: 'NintendoExt003';
+    src: url('%7') format('truetype');
+}
+`;
+
+    document.head.appendChild(css);
+})();
+)";
+
+constexpr char LOAD_NX_FONT[] = R"(
+(function() {
+    var elements = document.querySelectorAll("*");
+
+    for (var i = 0; i < elements.length; i++) {
+        var style = window.getComputedStyle(elements[i], null);
+        if (style.fontFamily.includes("Arial") || style.fontFamily.includes("Calibri") ||
+            style.fontFamily.includes("Century") || style.fontFamily.includes("Times New Roman")) {
+            elements[i].style.fontFamily = "FontStandard, FontChineseSimplified, FontExtendedChineseSimplified, FontChineseTraditional, FontKorean, NintendoExt003";
+        } else {
+            elements[i].style.fontFamily = style.fontFamily + ", FontStandard, FontChineseSimplified, FontExtendedChineseSimplified, FontChineseTraditional, FontKorean, NintendoExt003";
+        }
+    }
+})();
+)";
+
+constexpr char GAMEPAD_SCRIPT[] = R"(
+window.addEventListener("gamepadconnected", function(e) {
+    console.log("Gamepad connected at index %d: %s. %d buttons, %d axes.",
+        e.gamepad.index, e.gamepad.id, e.gamepad.buttons.length, e.gamepad.axes.length);
+});
+
+window.addEventListener("gamepaddisconnected", function(e) {
+    console.log("Gamepad disconnected from index %d: %s", e.gamepad.index, e.gamepad.id);
+});
+)";
+
+constexpr char WINDOW_NX_SCRIPT[] = R"(
+var end_applet = false;
+var yuzu_key_callbacks = [];
+
+(function() {
+    class WindowNX {
+        constructor() {
+            yuzu_key_callbacks[1] = function() { window.history.back(); };
+            yuzu_key_callbacks[2] = function() { window.nx.endApplet(); };
+        }
+
+        addEventListener(type, listener, options) {
+            console.log("nx.addEventListener called, type=%s", type);
+
+            window.addEventListener(type, listener, options);
+        }
+
+        endApplet() {
+            console.log("nx.endApplet called");
+
+            end_applet = true;
+        }
+
+        playSystemSe(system_se) {
+            console.log("nx.playSystemSe is not implemented, system_se=%s", system_se);
+        }
+
+        sendMessage(message) {
+            console.log("nx.sendMessage is not implemented, message=%s", message);
+        }
+
+        setCursorScrollSpeed(scroll_speed) {
+            console.log("nx.setCursorScrollSpeed is not implemented, scroll_speed=%d", scroll_speed);
+        }
+    }
+
+    class WindowNXFooter {
+        setAssign(key, label, func, option) {
+            console.log("nx.footer.setAssign called, key=%s", key);
+
+            switch (key) {
+                case "A":
+                    yuzu_key_callbacks[0] = func;
+                    break;
+                case "B":
+                    yuzu_key_callbacks[1] = func;
+                    break;
+                case "X":
+                    yuzu_key_callbacks[2] = func;
+                    break;
+                case "Y":
+                    yuzu_key_callbacks[3] = func;
+                    break;
+                case "L":
+                    yuzu_key_callbacks[6] = func;
+                    break;
+                case "R":
+                    yuzu_key_callbacks[7] = func;
+                    break;
+            }
+        }
+
+        setFixed(kind) {
+            console.log("nx.footer.setFixed is not implemented, kind=%s", kind);
+        }
+
+        unsetAssign(key) {
+            console.log("nx.footer.unsetAssign called, key=%s", key);
+
+            switch (key) {
+                case "A":
+                    yuzu_key_callbacks[0] = function() {};
+                    break;
+                case "B":
+                    yuzu_key_callbacks[1] = function() {};
+                    break;
+                case "X":
+                    yuzu_key_callbacks[2] = function() {};
+                    break;
+                case "Y":
+                    yuzu_key_callbacks[3] = function() {};
+                    break;
+                case "L":
+                    yuzu_key_callbacks[6] = function() {};
+                    break;
+                case "R":
+                    yuzu_key_callbacks[7] = function() {};
+                    break;
+            }
+        }
+    }
+
+    class WindowNXPlayReport {
+        incrementCounter(counter_id) {
+            console.log("nx.playReport.incrementCounter is not implemented, counter_id=%d", counter_id);
+        }
+
+        setCounterSetIdentifier(counter_id) {
+            console.log("nx.playReport.setCounterSetIdentifier is not implemented, counter_id=%d", counter_id);
+        }
+    }
+
+    window.nx = new WindowNX();
+    window.nx.footer = new WindowNXFooter();
+    window.nx.playReport = new WindowNXPlayReport();
+})();
+)";

src/yuzu/bootmanager.cpp

@@ -569,6 +569,10 @@ void GRenderWindow::CaptureScreenshot(u32 res_scale, const QString& screenshot_p
         layout);
 }
 
+bool GRenderWindow::IsLoadingComplete() const {
+    return first_frame;
+}
+
 void GRenderWindow::OnMinimalClientAreaChangeRequest(std::pair<u32, u32> minimal_size) {
     setMinimumSize(minimal_size.first, minimal_size.second);
 }

src/yuzu/bootmanager.h

@@ -162,6 +162,8 @@ public:
     /// Destroy the previous run's child_widget which should also destroy the child_window
     void ReleaseRenderTarget();
 
+    bool IsLoadingComplete() const;
+
     void CaptureScreenshot(u32 res_scale, const QString& screenshot_path);
 
     std::pair<u32, u32> ScaleTouch(const QPointF& pos) const;

src/yuzu/main.cpp

@@ -28,8 +28,6 @@
 #include "core/hle/service/am/applet_ae.h"
 #include "core/hle/service/am/applet_oe.h"
 #include "core/hle/service/am/applets/applets.h"
-#include "core/hle/service/hid/controllers/npad.h"
-#include "core/hle/service/hid/hid.h"
 
 // These are wrappers to avoid the calls to CreateDirectory and CreateFile because of the Windows
 // defines.
@@ -125,14 +123,6 @@ static FileSys::VirtualFile VfsDirectoryCreateFileWrapper(const FileSys::Virtual
 #include "yuzu/discord_impl.h"
 #endif
 
-#ifdef YUZU_USE_QT_WEB_ENGINE
-#include <QWebEngineProfile>
-#include <QWebEngineScript>
-#include <QWebEngineScriptCollection>
-#include <QWebEngineSettings>
-#include <QWebEngineView>
-#endif
-
 #ifdef QT_STATICPLUGIN
 Q_IMPORT_PLUGIN(QWindowsIntegrationPlugin);
 #endif
@@ -190,6 +180,30 @@ static void InitializeLogging() {
 #endif
 }
 
+static void RemoveCachedContents() {
+    const auto offline_fonts = Common::FS::SanitizePath(
+        fmt::format("{}/fonts", Common::FS::GetUserPath(Common::FS::UserPath::CacheDir)),
+        Common::FS::DirectorySeparator::PlatformDefault);
+
+    const auto offline_manual = Common::FS::SanitizePath(
+        fmt::format("{}/offline_web_applet_manual",
+                    Common::FS::GetUserPath(Common::FS::UserPath::CacheDir)),
+        Common::FS::DirectorySeparator::PlatformDefault);
+    const auto offline_legal_information = Common::FS::SanitizePath(
+        fmt::format("{}/offline_web_applet_legal_information",
+                    Common::FS::GetUserPath(Common::FS::UserPath::CacheDir)),
+        Common::FS::DirectorySeparator::PlatformDefault);
+    const auto offline_system_data = Common::FS::SanitizePath(
+        fmt::format("{}/offline_web_applet_system_data",
+                    Common::FS::GetUserPath(Common::FS::UserPath::CacheDir)),
+        Common::FS::DirectorySeparator::PlatformDefault);
+
+    Common::FS::DeleteDirRecursively(offline_fonts);
+    Common::FS::DeleteDirRecursively(offline_manual);
+    Common::FS::DeleteDirRecursively(offline_legal_information);
+    Common::FS::DeleteDirRecursively(offline_system_data);
+}
+
 GMainWindow::GMainWindow()
     : input_subsystem{std::make_shared<InputCommon::InputSubsystem>()},
       config{std::make_unique<Config>()}, vfs{std::make_shared<FileSys::RealVfsFilesystem>()},
@@ -258,6 +272,9 @@ GMainWindow::GMainWindow()
         FileSys::ContentProviderUnionSlot::FrontendManual, provider.get());
     Core::System::GetInstance().GetFileSystemController().CreateFactories(*vfs);
 
+    // Remove cached contents generated during the previous session
+    RemoveCachedContents();
+
     // Gen keys if necessary
     OnReinitializeKeys(ReinitializeKeyBehavior::NoWarning);
 
@@ -349,150 +366,141 @@ void GMainWindow::SoftwareKeyboardInvokeCheckDialog(std::u16string error_message
     emit SoftwareKeyboardFinishedCheckDialog();
 }
 
+void GMainWindow::WebBrowserOpenWebPage(std::string_view main_url, std::string_view additional_args,
+                                        bool is_local) {
 #ifdef YUZU_USE_QT_WEB_ENGINE
 
-void GMainWindow::WebBrowserOpenPage(std::string_view filename, std::string_view additional_args) {
-    NXInputWebEngineView web_browser_view(this);
+    if (disable_web_applet) {
+        emit WebBrowserClosed(Service::AM::Applets::WebExitReason::WindowClosed,
+                              "http://localhost/");
+        return;
+    }
 
-    // Scope to contain the QProgressDialog for initialization
-    {
-        QProgressDialog progress(this);
-        progress.setMinimumDuration(200);
-        progress.setLabelText(tr("Loading Web Applet..."));
-        progress.setRange(0, 4);
-        progress.setValue(0);
-        progress.show();
+    QtNXWebEngineView web_browser_view(this, Core::System::GetInstance(), input_subsystem.get());
 
-        auto future = QtConcurrent::run([this] { emit WebBrowserUnpackRomFS(); });
+    ui.action_Pause->setEnabled(false);
+    ui.action_Restart->setEnabled(false);
+    ui.action_Stop->setEnabled(false);
 
-        while (!future.isFinished())
-            QApplication::processEvents();
+    {
+        QProgressDialog loading_progress(this);
+        loading_progress.setLabelText(tr("Loading Web Applet..."));
+        loading_progress.setRange(0, 3);
+        loading_progress.setValue(0);
 
-        progress.setValue(1);
+        if (is_local && !Common::FS::Exists(std::string(main_url))) {
+            loading_progress.show();
 
-        // Load the special shim script to handle input and exit.
-        QWebEngineScript nx_shim;
-        nx_shim.setSourceCode(GetNXShimInjectionScript());
-        nx_shim.setWorldId(QWebEngineScript::MainWorld);
-        nx_shim.setName(QStringLiteral("nx_inject.js"));
-        nx_shim.setInjectionPoint(QWebEngineScript::DocumentCreation);
-        nx_shim.setRunsOnSubFrames(true);
-        web_browser_view.page()->profile()->scripts()->insert(nx_shim);
+            auto future = QtConcurrent::run([this] { emit WebBrowserExtractOfflineRomFS(); });
 
-        web_browser_view.load(
-            QUrl(QUrl::fromLocalFile(QString::fromStdString(std::string(filename))).toString() +
-                 QString::fromStdString(std::string(additional_args))));
+            while (!future.isFinished()) {
+                QCoreApplication::processEvents();
+            }
+        }
 
-        progress.setValue(2);
+        loading_progress.setValue(1);
 
+        if (is_local) {
+            web_browser_view.LoadLocalWebPage(main_url, additional_args);
+        } else {
+            web_browser_view.LoadExternalWebPage(main_url, additional_args);
+        }
+
+        if (render_window->IsLoadingComplete()) {
             render_window->hide();
-        web_browser_view.setFocus();
+        }
 
         const auto& layout = render_window->GetFramebufferLayout();
         web_browser_view.resize(layout.screen.GetWidth(), layout.screen.GetHeight());
         web_browser_view.move(layout.screen.left, layout.screen.top + menuBar()->height());
         web_browser_view.setZoomFactor(static_cast<qreal>(layout.screen.GetWidth()) /
-                                       Layout::ScreenUndocked::Width);
-        web_browser_view.settings()->setAttribute(
-            QWebEngineSettings::LocalContentCanAccessRemoteUrls, true);
+                                       static_cast<qreal>(Layout::ScreenUndocked::Width));
 
+        web_browser_view.setFocus();
         web_browser_view.show();
 
-        progress.setValue(3);
+        loading_progress.setValue(2);
 
-        QApplication::processEvents();
+        QCoreApplication::processEvents();
 
-        progress.setValue(4);
+        loading_progress.setValue(3);
     }
 
-    bool finished = false;
-    QAction* exit_action = new QAction(tr("Exit Web Applet"), this);
-    connect(exit_action, &QAction::triggered, this, [&finished] { finished = true; });
+    bool exit_check = false;
+
+    // TODO (Morph): Remove this
+    QAction* exit_action = new QAction(tr("Disable Web Applet"), this);
+    connect(exit_action, &QAction::triggered, this, [this, &web_browser_view] {
+        const auto result = QMessageBox::warning(
+            this, tr("Disable Web Applet"),
+            tr("Disabling the web applet will cause it to not be shown again for the rest of the "
+               "emulated session. This can lead to undefined behavior and should only be used with "
+               "Super Mario 3D All-Stars. Are you sure you want to disable the web applet?"),
+            QMessageBox::Yes | QMessageBox::No);
+        if (result == QMessageBox::Yes) {
+            disable_web_applet = true;
+            web_browser_view.SetFinished(true);
+        }
+    });
     ui.menubar->addAction(exit_action);
 
-    auto& npad =
-        Core::System::GetInstance()
-            .ServiceManager()
-            .GetService<Service::HID::Hid>("hid")
-            ->GetAppletResource()
-            ->GetController<Service::HID::Controller_NPad>(Service::HID::HidController::NPad);
+    while (!web_browser_view.IsFinished()) {
+        QCoreApplication::processEvents();
 
-    const auto fire_js_keypress = [&web_browser_view](u32 key_code) {
+        if (!exit_check) {
             web_browser_view.page()->runJavaScript(
-            QStringLiteral("document.dispatchEvent(new KeyboardEvent('keydown', {'key': %1}));")
-                .arg(key_code));
-    };
-
-    QMessageBox::information(
-        this, tr("Exit"),
-        tr("To exit the web application, use the game provided controls to select exit, select the "
-           "'Exit Web Applet' option in the menu bar, or press the 'Enter' key."));
-
-    bool running_exit_check = false;
-    while (!finished) {
-        QApplication::processEvents();
-
-        if (!running_exit_check) {
-            web_browser_view.page()->runJavaScript(QStringLiteral("applet_done;"),
-                                                   [&](const QVariant& res) {
-                                                       running_exit_check = false;
-                                                       if (res.toBool())
-                                                           finished = true;
+                QStringLiteral("end_applet;"), [&](const QVariant& variant) {
+                    exit_check = false;
+                    if (variant.toBool()) {
+                        web_browser_view.SetFinished(true);
+                        web_browser_view.SetExitReason(
+                            Service::AM::Applets::WebExitReason::EndButtonPressed);
+                    }
                 });
-            running_exit_check = true;
+
+            exit_check = true;
         }
 
-        const auto input = npad.GetAndResetPressState();
-        for (std::size_t i = 0; i < Settings::NativeButton::NumButtons; ++i) {
-            if ((input & (1 << i)) != 0) {
-                LOG_DEBUG(Frontend, "firing input for button id={:02X}", i);
-                web_browser_view.page()->runJavaScript(
-                    QStringLiteral("yuzu_key_callbacks[%1]();").arg(i));
+        if (web_browser_view.GetCurrentURL().contains(QStringLiteral("localhost"))) {
+            if (!web_browser_view.IsFinished()) {
+                web_browser_view.SetFinished(true);
+                web_browser_view.SetExitReason(Service::AM::Applets::WebExitReason::CallbackURL);
             }
+
+            web_browser_view.SetLastURL(web_browser_view.GetCurrentURL().toStdString());
         }
 
-        if (input & 0x00888000)      // RStick Down | LStick Down | DPad Down
-            fire_js_keypress(40);    // Down Arrow Key
-        else if (input & 0x00444000) // RStick Right | LStick Right | DPad Right
-            fire_js_keypress(39);    // Right Arrow Key
-        else if (input & 0x00222000) // RStick Up | LStick Up | DPad Up
-            fire_js_keypress(38);    // Up Arrow Key
-        else if (input & 0x00111000) // RStick Left | LStick Left | DPad Left
-            fire_js_keypress(37);    // Left Arrow Key
-        else if (input & 0x00000001) // A Button
-            fire_js_keypress(13);    // Enter Key
+        std::this_thread::sleep_for(std::chrono::milliseconds(1));
     }
 
+    const auto exit_reason = web_browser_view.GetExitReason();
+    const auto last_url = web_browser_view.GetLastURL();
+
     web_browser_view.hide();
-    render_window->show();
+
     render_window->setFocus();
-    ui.menubar->removeAction(exit_action);
 
-    // Needed to update render window focus/show and remove menubar action
-    QApplication::processEvents();
-    emit WebBrowserFinishedBrowsing();
+    if (render_window->IsLoadingComplete()) {
+        render_window->show();
     }
 
-#else
+    ui.action_Pause->setEnabled(true);
+    ui.action_Restart->setEnabled(true);
+    ui.action_Stop->setEnabled(true);
 
-void GMainWindow::WebBrowserOpenPage(std::string_view filename, std::string_view additional_args) {
-#ifndef __linux__
-    QMessageBox::warning(
-        this, tr("Web Applet"),
-        tr("This version of yuzu was built without QtWebEngine support, meaning that yuzu cannot "
-           "properly display the game manual or web page requested."),
-        QMessageBox::Ok, QMessageBox::Ok);
-#endif
+    ui.menubar->removeAction(exit_action);
 
-    LOG_INFO(Frontend,
-             "(STUBBED) called - Missing QtWebEngine dependency needed to open website page at "
-             "'{}' with arguments '{}'!",
-             filename, additional_args);
+    QCoreApplication::processEvents();
 
-    emit WebBrowserFinishedBrowsing();
-}
+    emit WebBrowserClosed(exit_reason, last_url);
+
+#else
+
+    // Utilize the same fallback as the default web browser applet.
+    emit WebBrowserClosed(Service::AM::Applets::WebExitReason::WindowClosed, "http://localhost/");
 
 #endif
+}
 
 void GMainWindow::InitializeWidgets() {
 #ifdef YUZU_ENABLE_COMPATIBILITY_REPORTING
@@ -993,7 +1001,6 @@ bool GMainWindow::LoadROM(const QString& filename, std::size_t program_index) {
 
     system.SetAppletFrontendSet({
         std::make_unique<QtControllerSelector>(*this), // Controller Selector
-        nullptr,                                       // E-Commerce
         std::make_unique<QtErrorDisplay>(*this),       // Error Display
         nullptr,                                       // Parental Controls
         nullptr,                                       // Photo Viewer
@@ -2102,6 +2109,7 @@ void GMainWindow::OnStartGame() {
     qRegisterMetaType<std::string>("std::string");
     qRegisterMetaType<std::optional<std::u16string>>("std::optional<std::u16string>");
     qRegisterMetaType<std::string_view>("std::string_view");
+    qRegisterMetaType<Service::AM::Applets::WebExitReason>("Service::AM::Applets::WebExitReason");
 
     connect(emu_thread.get(), &EmuThread::ErrorThrown, this, &GMainWindow::OnCoreError);
 

src/yuzu/main.h

@@ -55,6 +55,10 @@ namespace InputCommon {
 class InputSubsystem;
 }
 
+namespace Service::AM::Applets {
+enum class WebExitReason : u32;
+}
+
 enum class EmulatedDirectoryTarget {
     NAND,
     SDMC,
@@ -126,8 +130,8 @@ signals:
     void SoftwareKeyboardFinishedText(std::optional<std::u16string> text);
     void SoftwareKeyboardFinishedCheckDialog();
 
-    void WebBrowserUnpackRomFS();
-    void WebBrowserFinishedBrowsing();
+    void WebBrowserExtractOfflineRomFS();
+    void WebBrowserClosed(Service::AM::Applets::WebExitReason exit_reason, std::string last_url);
 
 public slots:
     void OnLoadComplete();
@@ -138,7 +142,8 @@ public slots:
     void ProfileSelectorSelectProfile();
     void SoftwareKeyboardGetText(const Core::Frontend::SoftwareKeyboardParameters& parameters);
     void SoftwareKeyboardInvokeCheckDialog(std::u16string error_message);
-    void WebBrowserOpenPage(std::string_view filename, std::string_view arguments);
+    void WebBrowserOpenWebPage(std::string_view main_url, std::string_view additional_args,
+                               bool is_local);
     void OnAppFocusStateChanged(Qt::ApplicationState state);
 
 private:
@@ -321,6 +326,9 @@ private:
     // Last game booted, used for multi-process apps
     QString last_filename_booted;
 
+    // Disables the web applet for the rest of the emulated session
+    bool disable_web_applet{};
+
 protected:
     void dropEvent(QDropEvent* event) override;
     void dragEnterEvent(QDragEnterEvent* event) override;

src/yuzu/util/url_request_interceptor.cpp

@@ -0,0 +1,32 @@
+// Copyright 2020 yuzu Emulator Project
+// Licensed under GPLv2 or any later version
+// Refer to the license.txt file included.
+
+#ifdef YUZU_USE_QT_WEB_ENGINE
+
+#include "yuzu/util/url_request_interceptor.h"
+
+UrlRequestInterceptor::UrlRequestInterceptor(QObject* p) : QWebEngineUrlRequestInterceptor(p) {}
+
+UrlRequestInterceptor::~UrlRequestInterceptor() = default;
+
+void UrlRequestInterceptor::interceptRequest(QWebEngineUrlRequestInfo& info) {
+    const auto resource_type = info.resourceType();
+
+    switch (resource_type) {
+    case QWebEngineUrlRequestInfo::ResourceTypeMainFrame:
+        requested_url = info.requestUrl();
+        emit FrameChanged();
+        break;
+    case QWebEngineUrlRequestInfo::ResourceTypeSubFrame:
+    case QWebEngineUrlRequestInfo::ResourceTypeXhr:
+        emit FrameChanged();
+        break;
+    }
+}
+
+QUrl UrlRequestInterceptor::GetRequestedURL() const {
+    return requested_url;
+}
+
+#endif

src/yuzu/util/url_request_interceptor.h

@@ -0,0 +1,30 @@
+// Copyright 2020 yuzu Emulator Project
+// Licensed under GPLv2 or any later version
+// Refer to the license.txt file included.
+
+#pragma once
+
+#ifdef YUZU_USE_QT_WEB_ENGINE
+
+#include <QObject>
+#include <QWebEngineUrlRequestInterceptor>
+
+class UrlRequestInterceptor : public QWebEngineUrlRequestInterceptor {
+    Q_OBJECT
+
+public:
+    explicit UrlRequestInterceptor(QObject* p = nullptr);
+    ~UrlRequestInterceptor() override;
+
+    void interceptRequest(QWebEngineUrlRequestInfo& info) override;
+
+    QUrl GetRequestedURL() const;
+
+signals:
+    void FrameChanged();
+
+private:
+    QUrl requested_url;
+};
+
+#endif