// Copyright 2014 Citra Emulator Project
// Licensed under GPLv2 or any later version
// Refer to the license.txt file included.
#include <algorithm>
#include "common/make_unique.h"
#include "core/file_sys/archive_systemsavedata.h"
#include "core/hle/service/cfg/cfg.h"
namespace Service {
namespace CFG {
const u64 CFG_SAVE_ID = 0x00010017;
const u64 CONSOLE_UNIQUE_ID = 0xDEADC0DE;
const ConsoleModelInfo CONSOLE_MODEL = { NINTENDO_3DS_XL, { 0, 0, 0 } };
const u8 CONSOLE_LANGUAGE = LANGUAGE_EN;
const char CONSOLE_USERNAME[0x14] = "CITRA";
/// This will be initialized in CFGInit, and will be used when creating the block
UsernameBlock CONSOLE_USERNAME_BLOCK;
/// TODO(Subv): Find out what this actually is
const u8 SOUND_OUTPUT_MODE = 2;
const u8 UNITED_STATES_COUNTRY_ID = 49;
/// TODO(Subv): Find what the other bytes are
const ConsoleCountryInfo COUNTRY_INFO = { { 0, 0, 0 }, UNITED_STATES_COUNTRY_ID };
/**
* TODO(Subv): Find out what this actually is, these values fix some NaN uniforms in some games,
* for example Nintendo Zone
* Thanks Normmatt for providing this information
*/
const std::array<float, 8> STEREO_CAMERA_SETTINGS = {
62.0f, 289.0f, 76.80000305175781f, 46.08000183105469f,
10.0f, 5.0f, 55.58000183105469f, 21.56999969482422f
};
static const u32 CONFIG_SAVEFILE_SIZE = 0x8000;
static std::array<u8, CONFIG_SAVEFILE_SIZE> cfg_config_file_buffer;
static std::unique_ptr<FileSys::Archive_SystemSaveData> cfg_system_save_data;
ResultCode GetConfigInfoBlock(u32 block_id, u32 size, u32 flag, u8* output) {
// Read the header
SaveFileConfig* config = reinterpret_cast<SaveFileConfig*>(cfg_config_file_buffer.data());
auto itr = std::find_if(std::begin(config->block_entries), std::end(config->block_entries),
[&](const SaveConfigBlockEntry& entry) {
return entry.block_id == block_id && entry.size == size && (entry.flags & flag);
});
if (itr == std::end(config->block_entries)) {
LOG_ERROR(Service_CFG, "Config block %u with size %u and flags %u not found", block_id, size, flag);
return ResultCode(-1); // TODO(Subv): Find the correct error code
}
// The data is located in the block header itself if the size is less than 4 bytes
if (itr->size <= 4)
memcpy(output, &itr->offset_or_data, itr->size);
else
memcpy(output, &cfg_config_file_buffer[itr->offset_or_data], itr->size);
return RESULT_SUCCESS;
}
ResultCode CreateConfigInfoBlk(u32 block_id, u16 size, u16 flags, const u8* data) {
SaveFileConfig* config = reinterpret_cast<SaveFileConfig*>(cfg_config_file_buffer.data());
if (config->total_entries >= CONFIG_FILE_MAX_BLOCK_ENTRIES)
return ResultCode(-1); // TODO(Subv): Find the right error code
// Insert the block header with offset 0 for now
config->block_entries[config->total_entries] = { block_id, 0, size, flags };
if (size > 4) {
u32 offset = config->data_entries_offset;
// Perform a search to locate the next offset for the new data
// use the offset and size of the previous block to determine the new position
for (int i = config->total_entries - 1; i >= 0; --i) {
// Ignore the blocks that don't have a separate data offset
if (config->block_entries[i].size > 4) {
offset = config->block_entries[i].offset_or_data +
config->block_entries[i].size;
break;
}
}
config->block_entries[config->total_entries].offset_or_data = offset;
// Write the data at the new offset
memcpy(&cfg_config_file_buffer[offset], data, size);
}
else {
// The offset_or_data field in the header contains the data itself if it's 4 bytes or less
memcpy(&config->block_entries[config->total_entries].offset_or_data, data, size);
}
++config->total_entries;
return RESULT_SUCCESS;
}
ResultCode DeleteConfigNANDSaveFile() {
FileSys::Path path("config");
if (cfg_system_save_data->DeleteFile(path))
return RESULT_SUCCESS;
return ResultCode(-1); // TODO(Subv): Find the right error code
}
ResultCode UpdateConfigNANDSavegame() {
FileSys::Mode mode = {};
mode.write_flag = 1;
mode.create_flag = 1;
FileSys::Path path("config");
auto file = cfg_system_save_data->OpenFile(path, mode);
ASSERT_MSG(file != nullptr, "could not open file");
file->Write(0, CONFIG_SAVEFILE_SIZE, 1, cfg_config_file_buffer.data());
return RESULT_SUCCESS;
}
ResultCode FormatConfig() {
ResultCode res = DeleteConfigNANDSaveFile();
if (!res.IsSuccess())
return res;
// Delete the old data
cfg_config_file_buffer.fill(0);
// Create the header
SaveFileConfig* config = reinterpret_cast<SaveFileConfig*>(cfg_config_file_buffer.data());
// This value is hardcoded, taken from 3dbrew, verified by hardware, it's always the same value
config->data_entries_offset = 0x455C;
// Insert the default blocks
res = CreateConfigInfoBlk(0x00050005, sizeof(STEREO_CAMERA_SETTINGS), 0xE,
reinterpret_cast<const u8*>(STEREO_CAMERA_SETTINGS.data()));
if (!res.IsSuccess())
return res;
res = CreateConfigInfoBlk(0x00090001, sizeof(CONSOLE_UNIQUE_ID), 0xE,
reinterpret_cast<const u8*>(&CONSOLE_UNIQUE_ID));
if (!res.IsSuccess())
return res;
res = CreateConfigInfoBlk(0x000F0004, sizeof(CONSOLE_MODEL), 0x8,
reinterpret_cast<const u8*>(&CONSOLE_MODEL));
if (!res.IsSuccess())
return res;
res = CreateConfigInfoBlk(0x000A0002, sizeof(CONSOLE_LANGUAGE), 0xA, &CONSOLE_LANGUAGE);
if (!res.IsSuccess())
return res;
res = CreateConfigInfoBlk(0x00070001, sizeof(SOUND_OUTPUT_MODE), 0xE, &SOUND_OUTPUT_MODE);
if (!res.IsSuccess())
return res;
res = CreateConfigInfoBlk(0x000B0000, sizeof(COUNTRY_INFO), 0xE,
reinterpret_cast<const u8*>(&COUNTRY_INFO));
if (!res.IsSuccess())
return res;
res = CreateConfigInfoBlk(0x000A0000, sizeof(CONSOLE_USERNAME_BLOCK), 0xE,
reinterpret_cast<const u8*>(&CONSOLE_USERNAME_BLOCK));
if (!res.IsSuccess())
return res;
// Save the buffer to the file
res = UpdateConfigNANDSavegame();
if (!res.IsSuccess())
return res;
return RESULT_SUCCESS;
}
void CFGInit() {
// TODO(Subv): In the future we should use the FS service to query this archive,
// currently it is not possible because you can only have one open archive of the same type at any time
std::string nand_directory = FileUtil::GetUserPath(D_NAND_IDX);
cfg_system_save_data = Common::make_unique<FileSys::Archive_SystemSaveData>(
nand_directory, CFG_SAVE_ID);
if (!cfg_system_save_data->Initialize()) {
LOG_CRITICAL(Service_CFG, "Could not initialize SystemSaveData archive for the CFG:U service");
return;
}
// TODO(Subv): All this code should be moved to cfg:i,
// it's only here because we do not currently emulate the lower level code that uses that service
// Try to open the file in read-only mode to check its existence
FileSys::Mode mode = {};
mode.read_flag = 1;
FileSys::Path path("config");
auto file = cfg_system_save_data->OpenFile(path, mode);
// Load the config if it already exists
if (file != nullptr) {
file->Read(0, CONFIG_SAVEFILE_SIZE, cfg_config_file_buffer.data());
return;
}
// Initialize the Username block
// TODO(Subv): Initialize this directly in the variable when MSVC supports char16_t string literals
CONSOLE_USERNAME_BLOCK.ng_word = 0;
CONSOLE_USERNAME_BLOCK.zero = 0;
// Copy string to buffer and pad with zeros at the end
auto size = Common::UTF8ToUTF16(CONSOLE_USERNAME).copy(CONSOLE_USERNAME_BLOCK.username, 0x14);
std::fill(std::begin(CONSOLE_USERNAME_BLOCK.username) + size,
std::end(CONSOLE_USERNAME_BLOCK.username), 0);
FormatConfig();
}
void CFGShutdown() {
}
} // namespace CFG
} // namespace Service
