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applets/controller: Introduce additional checks for mode and caller
Some games like Cave Story+ set invalid values in the ControllerPrivateArg's mode and caller fields. Use other fields to determine the appropriate mode and caller should either or both fields be invalid.
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@ -75,6 +75,36 @@ void Controller::Initialize() {
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"Unknown ControllerSupportArgPrivate revision={} with size={}",
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"Unknown ControllerSupportArgPrivate revision={} with size={}",
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library_applet_version, controller_private_arg.arg_private_size);
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library_applet_version, controller_private_arg.arg_private_size);
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// Some games such as Cave Story+ set invalid values for the ControllerSupportMode.
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// Defer to arg_size to set the ControllerSupportMode.
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if (controller_private_arg.mode >= ControllerSupportMode::MaxControllerSupportMode) {
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switch (controller_private_arg.arg_size) {
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case sizeof(ControllerSupportArgOld):
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case sizeof(ControllerSupportArgNew):
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controller_private_arg.mode = ControllerSupportMode::ShowControllerSupport;
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break;
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case sizeof(ControllerUpdateFirmwareArg):
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controller_private_arg.mode = ControllerSupportMode::ShowControllerFirmwareUpdate;
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break;
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default:
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UNIMPLEMENTED_MSG("Unknown ControllerPrivateArg mode={} with arg_size={}",
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controller_private_arg.mode, controller_private_arg.arg_size);
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controller_private_arg.mode = ControllerSupportMode::ShowControllerSupport;
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break;
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}
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}
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// Some games such as Cave Story+ set invalid values for the ControllerSupportCaller.
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// This is always 0 (Application) except with ShowControllerFirmwareUpdateForSystem.
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if (controller_private_arg.caller >= ControllerSupportCaller::MaxControllerSupportCaller) {
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if (controller_private_arg.flag_1 &&
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controller_private_arg.mode == ControllerSupportMode::ShowControllerFirmwareUpdate) {
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controller_private_arg.caller = ControllerSupportCaller::System;
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} else {
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controller_private_arg.caller = ControllerSupportCaller::Application;
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}
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}
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switch (controller_private_arg.mode) {
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switch (controller_private_arg.mode) {
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case ControllerSupportMode::ShowControllerSupport: {
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case ControllerSupportMode::ShowControllerSupport: {
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const auto user_arg_storage = broker.PopNormalDataToApplet();
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const auto user_arg_storage = broker.PopNormalDataToApplet();
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@ -29,14 +29,18 @@ enum class LibraryAppletVersion : u32_le {
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};
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};
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enum class ControllerSupportMode : u8 {
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enum class ControllerSupportMode : u8 {
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ShowControllerSupport = 0,
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ShowControllerSupport,
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ShowControllerStrapGuide = 1,
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ShowControllerStrapGuide,
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ShowControllerFirmwareUpdate = 2,
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ShowControllerFirmwareUpdate,
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MaxControllerSupportMode,
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};
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};
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enum class ControllerSupportCaller : u8 {
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enum class ControllerSupportCaller : u8 {
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Application = 0,
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Application,
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System = 1,
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System,
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MaxControllerSupportCaller,
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};
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};
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struct ControllerSupportArgPrivate {
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struct ControllerSupportArgPrivate {
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