Add CTCert and DeviceID support

src/citra_qt/configuration/configure_system.cpp

@@ -241,20 +241,28 @@ ConfigureSystem::ConfigureSystem(Core::System& system_, QWidget* parent)
 
     connect(ui->button_secure_info, &QPushButton::clicked, this, [this] {
         ui->button_secure_info->setEnabled(false);
-        const QString file_path_qtstr =
-            QFileDialog::getOpenFileName(this, tr("Select SecureInfo_A"), QString(),
-                                         tr("SecureInfo_A (SecureInfo_A);;All Files (*.*)"));
+        const QString file_path_qtstr = QFileDialog::getOpenFileName(
+            this, tr("Select SecureInfo_A/B"), QString(),
+            tr("SecureInfo_A/B (SecureInfo_A SecureInfo_B);;All Files (*.*)"));
         ui->button_secure_info->setEnabled(true);
         InstallSecureData(file_path_qtstr.toStdString(), cfg->GetSecureInfoAPath());
     });
     connect(ui->button_friend_code_seed, &QPushButton::clicked, this, [this] {
         ui->button_friend_code_seed->setEnabled(false);
-        const QString file_path_qtstr = QFileDialog::getOpenFileName(
-            this, tr("Select LocalFriendCodeSeed_B"), QString(),
-            tr("LocalFriendCodeSeed_B (LocalFriendCodeSeed_B);;All Files (*.*)"));
+        const QString file_path_qtstr =
+            QFileDialog::getOpenFileName(this, tr("Select LocalFriendCodeSeed_A/B"), QString(),
+                                         tr("LocalFriendCodeSeed_A/B (LocalFriendCodeSeed_A "
+                                            "LocalFriendCodeSeed_B);;All Files (*.*)"));
         ui->button_friend_code_seed->setEnabled(true);
         InstallSecureData(file_path_qtstr.toStdString(), cfg->GetLocalFriendCodeSeedBPath());
     });
+    connect(ui->button_ct_cert, &QPushButton::clicked, this, [this] {
+        ui->button_ct_cert->setEnabled(false);
+        const QString file_path_qtstr = QFileDialog::getOpenFileName(
+            this, tr("Select CTCert"), QString(), tr("CTCert.bin (*.bin);;All Files (*.*)"));
+        ui->button_ct_cert->setEnabled(true);
+        InstallCTCert(file_path_qtstr.toStdString());
+    });
 
     for (u8 i = 0; i < country_names.size(); i++) {
         if (std::strcmp(country_names.at(i), "") != 0) {
@@ -320,6 +328,7 @@ void ConfigureSystem::SetConfiguration() {
     ui->edit_init_ticks_value->setText(
         QString::number(Settings::values.init_ticks_override.GetValue()));
 
+    am = Service::AM::GetModule(system);
     cfg = Service::CFG::GetModule(system);
     ReadSystemSettings();
 
@@ -555,6 +564,19 @@ void ConfigureSystem::InstallSecureData(const std::string& from_path, const std:
     RefreshSecureDataStatus();
 }
 
+void ConfigureSystem::InstallCTCert(const std::string& from_path) {
+    std::string from =
+        FileUtil::SanitizePath(from_path, FileUtil::DirectorySeparator::PlatformDefault);
+    std::string to =
+        FileUtil::SanitizePath(am->GetCTCertPath(), FileUtil::DirectorySeparator::PlatformDefault);
+    if (from.empty() || from == to) {
+        return;
+    }
+    FileUtil::Copy(from, to);
+    am->InvalidateCTCertData();
+    RefreshSecureDataStatus();
+}
+
 void ConfigureSystem::RefreshSecureDataStatus() {
     auto status_to_str = [](Service::CFG::SecureDataLoadStatus status) {
         switch (status) {
@@ -575,6 +597,10 @@ void ConfigureSystem::RefreshSecureDataStatus() {
         tr((std::string("Status: ") + status_to_str(cfg->LoadSecureInfoAFile())).c_str()));
     ui->label_friend_code_seed_status->setText(
         tr((std::string("Status: ") + status_to_str(cfg->LoadLocalFriendCodeSeedBFile())).c_str()));
+    ui->label_ct_cert_status->setText(
+        tr((std::string("Status: ") +
+            status_to_str(static_cast<Service::CFG::SecureDataLoadStatus>(am->LoadCTCertFile())))
+               .c_str()));
 }
 
 void ConfigureSystem::RetranslateUI() {

src/citra_qt/configuration/configure_system.h

@@ -20,6 +20,12 @@ namespace Core {
 class System;
 }
 
+namespace Service {
+namespace AM {
+class Module;
+} // namespace AM
+} // namespace Service
+
 namespace Service {
 namespace CFG {
 class Module;
@@ -47,6 +53,7 @@ private:
     void RefreshConsoleID();
 
     void InstallSecureData(const std::string& from_path, const std::string& to_path);
+    void InstallCTCert(const std::string& from_path);
     void RefreshSecureDataStatus();
 
     void SetupPerGameUI();
@@ -59,6 +66,7 @@ private:
     ConfigurationShared::CheckState is_new_3ds;
     bool enabled = false;
 
+    std::shared_ptr<Service::AM::Module> am;
     std::shared_ptr<Service::CFG::Module> cfg;
     std::u16string username;
     int birthmonth = 0;

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

@@ -80,6 +80,35 @@ struct TicketInfo {
 
 static_assert(sizeof(TicketInfo) == 0x18, "Ticket info structure size is wrong");
 
+bool CTCert::IsValid() const {
+    constexpr std::string_view expected_issuer_prod = "Nintendo CA - G3_NintendoCTR2prod";
+    constexpr std::string_view expected_issuer_dev = "Nintendo CA - G3_NintendoCTR2dev";
+    constexpr u32 expected_signature_type = 0x010005;
+
+    return signature_type == expected_signature_type &&
+           (std::string(issuer.data()) == expected_issuer_prod ||
+            std::string(issuer.data()) == expected_issuer_dev);
+
+    return false;
+}
+
+u32 CTCert::GetDeviceID() const {
+    constexpr std::string_view key_id_prefix = "CT";
+
+    const std::string key_id_str(key_id.data());
+    if (key_id_str.starts_with(key_id_prefix)) {
+        const std::string device_id =
+            key_id_str.substr(key_id_prefix.size(), key_id_str.find('-') - key_id_prefix.size());
+        char* end_ptr;
+        const u32 device_id_value = std::strtoul(device_id.c_str(), &end_ptr, 16);
+        if (*end_ptr == '\0') {
+            return device_id_value;
+        }
+    }
+    // Error
+    return 0;
+}
+
 class CIAFile::DecryptionState {
 public:
     std::vector<CryptoPP::CBC_Mode<CryptoPP::AES>::Decryption> content;
@@ -1213,6 +1242,21 @@ void Module::Interface::GetTicketList(Kernel::HLERequestContext& ctx) {
                 ticket_list_count, ticket_index);
 }
 
+void Module::Interface::GetDeviceID(Kernel::HLERequestContext& ctx) {
+    IPC::RequestParser rp(ctx);
+
+    const u32 deviceID = am->ct_cert.IsValid() ? am->ct_cert.GetDeviceID() : 0;
+
+    if (deviceID == 0) {
+        LOG_ERROR(Service_AM, "Invalid or missing CTCert");
+    }
+
+    IPC::RequestBuilder rb = rp.MakeBuilder(3, 0);
+    rb.Push(RESULT_SUCCESS);
+    rb.Push(0);
+    rb.Push(deviceID);
+}
+
 void Module::Interface::NeedsCleanup(Kernel::HLERequestContext& ctx) {
     IPC::RequestParser rp(ctx);
     const auto media_type = rp.Pop<u8>();
@@ -1802,13 +1846,76 @@ void Module::serialize(Archive& ar, const unsigned int) {
 }
 SERIALIZE_IMPL(Module)
 
-Module::Module(Core::System& system) : system(system) {
+void Module::Interface::GetDeviceCert(Kernel::HLERequestContext& ctx) {
+    IPC::RequestParser rp(ctx);
+    [[maybe_unused]] u32 size = rp.Pop<u32>();
+    auto buffer = rp.PopMappedBuffer();
+
+    if (!am->ct_cert.IsValid()) {
+        LOG_ERROR(Service_AM, "Invalid or missing CTCert");
+    }
+
+    buffer.Write(&am->ct_cert, 0, std::min(sizeof(CTCert), buffer.GetSize()));
+    IPC::RequestBuilder rb = rp.MakeBuilder(2, 2);
+    rb.Push(RESULT_SUCCESS);
+    rb.Push(0);
+    rb.PushMappedBuffer(buffer);
+}
+
+std::string Module::GetCTCertPath() {
+    return FileUtil::GetUserPath(FileUtil::UserPath::SysDataDir) + "CTCert.bin";
+}
+
+void Module::InvalidateCTCertData() {
+    ct_cert = CTCert();
+}
+
+CTCertLoadStatus Module::LoadCTCertFile() {
+    if (ct_cert.IsValid()) {
+        return CTCertLoadStatus::Loaded;
+    }
+    std::string file_path = GetCTCertPath();
+    if (!FileUtil::Exists(file_path)) {
+        return CTCertLoadStatus::NotFound;
+    }
+    FileUtil::IOFile file(file_path, "rb");
+    if (!file.IsOpen()) {
+        return CTCertLoadStatus::IOError;
+    }
+    if (file.GetSize() != sizeof(CTCert)) {
+        return CTCertLoadStatus::Invalid;
+    }
+    if (file.ReadBytes(&ct_cert, sizeof(CTCert)) != sizeof(CTCert)) {
+        return CTCertLoadStatus::IOError;
+    }
+    if (!ct_cert.IsValid()) {
+        ct_cert = CTCert();
+        return CTCertLoadStatus::Invalid;
+    }
+    return CTCertLoadStatus::Loaded;
+}
+
+Module::Module() {
+    LoadCTCertFile();
+}
+
+Module::Module(Core::System& system) : kernel(&system.Kernel()) {
     ScanForAllTitles();
+    LoadCTCertFile();
     system_updater_mutex = system.Kernel().CreateMutex(false, "AM::SystemUpdaterMutex");
 }
 
+Module::Module(Kernel::KernelSystem& kernel) : kernel(&kernel) {}
+
 Module::~Module() = default;
 
+std::shared_ptr<Module> GetModule(Core::System& system) {
+    auto am = system.ServiceManager().GetService<Service::AM::Module::Interface>("am:u");
+    if (!am)
+        return nullptr;
+    return am->GetModule();
+}
+
 void InstallInterfaces(Core::System& system) {
     auto& service_manager = system.ServiceManager();
     auto am = std::make_shared<Module>(system);

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

@@ -68,6 +68,31 @@ enum class InstallStatus : u32 {
     ErrorEncrypted,
 };
 
+enum class CTCertLoadStatus {
+    Loaded,
+    NotFound,
+    Invalid,
+    IOError,
+};
+
+struct CTCert {
+    u32_be signature_type{};
+    std::array<u8, 0x1E> signature_r{};
+    std::array<u8, 0x1E> signature_s{};
+    INSERT_PADDING_BYTES(0x40){};
+    std::array<char, 0x40> issuer{};
+    u32_be key_type{};
+    std::array<char, 0x40> key_id{};
+    u32_be expiration_time{};
+    std::array<u8, 0x1E> public_key_x{};
+    std::array<u8, 0x1E> public_key_y{};
+    INSERT_PADDING_BYTES(0x3C){};
+
+    bool IsValid() const;
+    u32 GetDeviceID() const;
+};
+static_assert(sizeof(CTCert) == 0x180, "Invalid CTCert size.");
+
 // Title ID valid length
 constexpr std::size_t TITLE_ID_VALID_LENGTH = 16;
 
@@ -208,6 +233,7 @@ Result UninstallProgram(const FS::MediaType media_type, const u64 title_id);
 
 class Module final {
 public:
+    Module();
     explicit Module(Core::System& system);
     ~Module();
 
@@ -216,6 +242,10 @@ public:
         Interface(std::shared_ptr<Module> am, const char* name, u32 max_session);
         ~Interface();
 
+        std::shared_ptr<Module> GetModule() const {
+            return am;
+        }
+
     protected:
         /**
          * AM::GetNumPrograms service function
@@ -415,6 +445,16 @@ public:
          */
         void GetTicketList(Kernel::HLERequestContext& ctx);
 
+        /**
+         * AM::GetDeviceID service function
+         *  Inputs:
+         *  Outputs:
+         *      1 : Result, 0 on success, otherwise error code
+         *      2 : Unknown
+         *      3 : DeviceID
+         */
+        void GetDeviceID(Kernel::HLERequestContext& ctx);
+
         /**
          * AM::NeedsCleanup service function
          *  Inputs:
@@ -702,10 +742,37 @@ public:
          */
         void EndImportTicket(Kernel::HLERequestContext& ctx);
 
+        /**
+         * AM::GetDeviceCert service function
+         *  Inputs:
+         *  Outputs:
+         *      1 : Result, 0 on success, otherwise error code
+         *      2 : Unknown
+         *      3-4 : Device cert
+         */
+        void GetDeviceCert(Kernel::HLERequestContext& ctx);
+
     protected:
         std::shared_ptr<Module> am;
     };
 
+    /**
+     * Gets the CTCert.bin path in the host filesystem
+     * @returns std::string CTCert.bin path in the host filesystem
+     */
+    std::string GetCTCertPath();
+
+    /**
+     * Invalidates the CTCert data so that it is loaded again.
+     */
+    void InvalidateCTCertData();
+
+    /**
+     * Loads the CTCert.bin file from the filesystem.
+     * @returns CTCertLoadStatus indicating the file load status.
+     */
+    CTCertLoadStatus LoadCTCertFile();
+
 private:
     /**
      * Scans the for titles in a storage medium for listing.
@@ -722,12 +789,15 @@ private:
     bool cia_installing = false;
     std::array<std::vector<u64_le>, 3> am_title_list;
     std::shared_ptr<Kernel::Mutex> system_updater_mutex;
+    CTCert ct_cert{};
 
     template <class Archive>
     void serialize(Archive& ar, const unsigned int);
     friend class boost::serialization::access;
 };
 
+std::shared_ptr<Module> GetModule(Core::System& system);
+
 void InstallInterfaces(Core::System& system);
 
 } // namespace Service::AM

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

@@ -19,7 +19,7 @@ AM_NET::AM_NET(std::shared_ptr<Module> am) : Module::Interface(std::move(am), "a
         {0x0007, &AM_NET::DeleteTicket, "DeleteTicket"},
         {0x0008, &AM_NET::GetNumTickets, "GetNumTickets"},
         {0x0009, &AM_NET::GetTicketList, "GetTicketList"},
-        {0x000A, nullptr, "GetDeviceID"},
+        {0x000A, &AM_NET::GetDeviceID, "GetDeviceID"},
         {0x000B, nullptr, "GetNumImportTitleContexts"},
         {0x000C, nullptr, "GetImportTitleContextList"},
         {0x000D, nullptr, "GetImportTitleContexts"},
@@ -103,7 +103,7 @@ AM_NET::AM_NET(std::shared_ptr<Module> am) : Module::Interface(std::move(am), "a
         {0x0815, nullptr, "GetCurrentImportContentContexts"},
         {0x0816, nullptr, "Sign"},
         {0x0817, nullptr, "Verify"},
-        {0x0818, nullptr, "GetDeviceCert"},
+        {0x0818, &AM_NET::GetDeviceCert, "GetDeviceCert"},
         {0x0819, nullptr, "ImportCertificates"},
         {0x081A, nullptr, "ImportCertificate"},
         {0x081B, nullptr, "CommitImportTitlesAndUpdateFirmwareAuto"},

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

@@ -19,7 +19,7 @@ AM_SYS::AM_SYS(std::shared_ptr<Module> am) : Module::Interface(std::move(am), "a
         {0x0007, &AM_SYS::DeleteTicket, "DeleteTicket"},
         {0x0008, &AM_SYS::GetNumTickets, "GetNumTickets"},
         {0x0009, &AM_SYS::GetTicketList, "GetTicketList"},
-        {0x000A, nullptr, "GetDeviceID"},
+        {0x000A, &AM_SYS::GetDeviceID, "GetDeviceID"},
         {0x000B, nullptr, "GetNumImportTitleContexts"},
         {0x000C, nullptr, "GetImportTitleContextList"},
         {0x000D, nullptr, "GetImportTitleContexts"},

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

@@ -19,7 +19,7 @@ AM_U::AM_U(std::shared_ptr<Module> am) : Module::Interface(std::move(am), "am:u"
         {0x0007, &AM_U::DeleteTicket, "DeleteTicket"},
         {0x0008, &AM_U::GetNumTickets, "GetNumTickets"},
         {0x0009, &AM_U::GetTicketList, "GetTicketList"},
-        {0x000A, nullptr, "GetDeviceID"},
+        {0x000A, &AM_U::GetDeviceCert, "GetDeviceID"},
         {0x000B, nullptr, "GetNumImportTitleContexts"},
         {0x000C, nullptr, "GetImportTitleContextList"},
         {0x000D, nullptr, "GetImportTitleContexts"},