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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.
pull/4895/head
Morph 2020-11-04 11:21:17 -05:00
parent 88192af8ac
commit af1183a993
2 changed files with 39 additions and 5 deletions
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30
src/core/hle/service/am/applets/controller.cpp
View File

@ -75,6 +75,36 @@ void Controller::Initialize() {
"Unknown ControllerSupportArgPrivate revision={} with size={}",
library_applet_version, controller_private_arg.arg_private_size);
// Some games such as Cave Story+ set invalid values for the ControllerSupportMode.
// Defer to arg_size to set the ControllerSupportMode.
if (controller_private_arg.mode >= ControllerSupportMode::MaxControllerSupportMode) {
switch (controller_private_arg.arg_size) {
case sizeof(ControllerSupportArgOld):
case sizeof(ControllerSupportArgNew):
controller_private_arg.mode = ControllerSupportMode::ShowControllerSupport;
break;
case sizeof(ControllerUpdateFirmwareArg):
controller_private_arg.mode = ControllerSupportMode::ShowControllerFirmwareUpdate;
break;
default:
UNIMPLEMENTED_MSG("Unknown ControllerPrivateArg mode={} with arg_size={}",
controller_private_arg.mode, controller_private_arg.arg_size);
controller_private_arg.mode = ControllerSupportMode::ShowControllerSupport;
break;
}
}
// Some games such as Cave Story+ set invalid values for the ControllerSupportCaller.
// This is always 0 (Application) except with ShowControllerFirmwareUpdateForSystem.
if (controller_private_arg.caller >= ControllerSupportCaller::MaxControllerSupportCaller) {
if (controller_private_arg.flag_1 &&
controller_private_arg.mode == ControllerSupportMode::ShowControllerFirmwareUpdate) {
controller_private_arg.caller = ControllerSupportCaller::System;
} else {
controller_private_arg.caller = ControllerSupportCaller::Application;
}
}
switch (controller_private_arg.mode) {
case ControllerSupportMode::ShowControllerSupport: {
const auto user_arg_storage = broker.PopNormalDataToApplet();

14
src/core/hle/service/am/applets/controller.h
View File

@ -29,14 +29,18 @@ enum class LibraryAppletVersion : u32_le {
};
enum class ControllerSupportMode : u8 {
ShowControllerSupport = 0,
ShowControllerStrapGuide = 1,
ShowControllerFirmwareUpdate = 2,
ShowControllerSupport,
ShowControllerStrapGuide,
ShowControllerFirmwareUpdate,
MaxControllerSupportMode,
};
enum class ControllerSupportCaller : u8 {
Application = 0,
System = 1,
Application,
System,
MaxControllerSupportCaller,
};
struct ControllerSupportArgPrivate {