From f992ecacab82f163bb5c645f20cc9da7c79e9e2a Mon Sep 17 00:00:00 2001
From: wheremyfoodat <gponiris2004@gmail.com>
Date: Thu, 26 Jan 2023 01:26:22 +0200
Subject: [PATCH] [CFG] Add more configs

---
 include/services/cfg.hpp  |  3 +++
 src/core/services/cfg.cpp | 42 ++++++++++++++++++++++++++++++++++++++-
 2 files changed, 44 insertions(+), 1 deletion(-)

diff --git a/include/services/cfg.hpp b/include/services/cfg.hpp
index 4eae51b5..64667ef8 100644
--- a/include/services/cfg.hpp
+++ b/include/services/cfg.hpp
@@ -1,4 +1,5 @@
 #pragma once
+#include <cstring>
 #include "helpers.hpp"
 #include "logger.hpp"
 #include "memory.hpp"
@@ -8,6 +9,8 @@ class CFGService {
 	Memory& mem;
 	MAKE_LOG_FUNCTION(log, cfgLogger)
 
+	void writeStringU16(u32 pointer, const std::u16string& string);
+
 	// Service functions
 	void getConfigInfoBlk2(u32 messagePointer);
 	void secureInfoGetRegion(u32 messagePointer);
diff --git a/src/core/services/cfg.cpp b/src/core/services/cfg.cpp
index c5f68c15..66192485 100644
--- a/src/core/services/cfg.cpp
+++ b/src/core/services/cfg.cpp
@@ -26,6 +26,16 @@ void CFGService::handleSyncRequest(u32 messagePointer) {
 	}
 }
 
+// Write a UTF16 string to 3DS memory starting at "pointer". Appends a null terminator.
+void CFGService::writeStringU16(u32 pointer, const std::u16string& string) {
+	for (auto c : string) {
+		mem.write16(pointer, static_cast<u16>(c));
+		pointer += 2;
+	}
+
+	mem.write16(pointer, static_cast<u16>(u'\0')); // Null terminator
+}
+
 void CFGService::getConfigInfoBlk2(u32 messagePointer) {
 	u32 size = mem.read32(messagePointer + 4);
 	u32 blockID = mem.read32(messagePointer + 8);
@@ -42,8 +52,38 @@ void CFGService::getConfigInfoBlk2(u32 messagePointer) {
 		mem.write8(output + 1, 0); // Unknown
 		mem.write8(output + 2, 2); // Province (Temporarily stubbed to Washington DC like Citra)
 		mem.write8(output + 3, 49); // Country code (Temporarily stubbed to USA like Citra)
-	}else if (size == 0x20 && blockID == 0x50005) {
+	} else if (size == 0x20 && blockID == 0x50005) {
 		printf("[Unimplemented] Read stereo display settings from NAND\n");
+	} else if (size == 0x1C && blockID == 0xA0000) { // Username
+		writeStringU16(output, u"Pander");
+	} else if (size == 0xC0 && blockID == 0xC0000) { // Parental restrictions info
+		for (int i = 0; i < 0xC0; i++)
+			mem.write8(output + i, 0);
+	} else if (size == 4 && blockID == 0xD0000) { // Agreed EULA version (first 2 bytes) and latest EULA version (next 2 bytes)
+		log("Read EULA info\n");
+		mem.write16(output, 0x0202); // Agreed EULA version = 2.2 (Random number. TODO: Check)
+		mem.write16(output + 2, 0x0202); // Latest EULA version = 2.2 
+	} else if (size == 0x800 && blockID == 0xB0001) { // UTF-16 name for our country in every language at 0x80 byte intervals
+		constexpr size_t languageCount = 16;
+		constexpr size_t nameSize = 0x80; // Max size of each name in bytes
+		std::u16string name = u"PandaLand (Home of PandaSemi LLC) (aka Pandistan)"; // Note: This + the null terminator needs to fit in 0x80 bytes
+
+		for (int i = 0; i < languageCount; i++) {
+			u32 pointer = output + i * nameSize;
+			writeStringU16(pointer, name);
+		}
+	} else if (size == 0x800 && blockID == 0xB0002) { // UTF-16 name for our state in every language at 0x80 byte intervals
+		constexpr size_t languageCount = 16;
+		constexpr size_t nameSize = 0x80; // Max size of each name in bytes
+		std::u16string name = u"Pandington"; // Note: This + the null terminator needs to fit in 0x80 bytes
+
+		for (int i = 0; i < languageCount; i++) {
+			u32 pointer = output + i * nameSize; 
+			writeStringU16(pointer, name);
+		}
+	} else if (size == 4 && blockID == 0xB0003) { // Coordinates (latidude and longtitude) as s16
+		mem.write16(output, 0); // Latitude
+		mem.write16(output + 2, 0); // Longtitude
 	} else {
 		Helpers::panic("Unhandled GetConfigInfoBlk2 configuration");
 	}