Add FRD service

src/core/services/frd.cpp

@@ -0,0 +1,56 @@
+#include "services/frd.hpp"
+
+namespace FRDCommands {
+	enum : u32 {
+		SetClientSdkVersion = 0x00320042,
+		GetMyFriendKey = 0x00050000,
+		GetMyPresence = 0x00080000
+	};
+}
+
+namespace Result {
+	enum : u32 {
+		Success = 0,
+	};
+}
+
+void FRDService::reset() {}
+
+void FRDService::handleSyncRequest(u32 messagePointer) {
+	const u32 command = mem.read32(messagePointer);
+	switch (command) {
+		case FRDCommands::GetMyFriendKey: getMyFriendKey(messagePointer); break;
+		case FRDCommands::GetMyPresence: getMyPresence(messagePointer); break;
+		case FRDCommands::SetClientSdkVersion: setClientSDKVersion(messagePointer); break;
+		default: Helpers::panic("FRD service requested. Command: %08X\n", command);
+	}
+}
+
+void FRDService::getMyFriendKey(u32 messagePointer) {
+	log("FRD::GetMyFriendKey");
+
+	mem.write32(messagePointer + 4, Result::Success);
+	mem.write32(messagePointer + 8, 0);  // Principal ID
+	mem.write32(messagePointer + 12, 0); // Padding (?)
+	mem.write32(messagePointer + 16, 0); // Local friend code
+	mem.write32(messagePointer + 20, 0);
+}
+
+void FRDService::getMyPresence(u32 messagePointer) {
+	static constexpr u32 presenceSize = 0x12C; // A presence seems to be 12C bytes of data, not sure what it contains
+	log("FRD::GetMyPresence\n");
+	u32 buffer = mem.read32(messagePointer + 0x104); // Buffer to write presence info to.
+
+	for (u32 i = 0; i < presenceSize; i += 4) { // Clear presence info with 0s for now
+		mem.write32(buffer + i, 0);
+	}
+
+	mem.write32(messagePointer + 4, Result::Success);
+}
+
+void FRDService::setClientSDKVersion(u32 messagePointer) {
+	u32 version = mem.read32(messagePointer + 4);
+	log("FRD::SetClientSdkVersion (version = %d)\n", version);
+
+	mem.write32(messagePointer + 4, Result::Success);
+}