// Copyright 2014 Citra Emulator Project
// Licensed under GPLv2 or any later version
// Refer to the license.txt file included.
#include "common/file_util.h"
#include "common/log.h"
#include "core/file_sys/archive_systemsavedata.h"
#include "core/hle/hle.h"
#include "core/hle/service/cfg_u.h"
////////////////////////////////////////////////////////////////////////////////////////////////////
// Namespace CFG_U
namespace CFG_U {
enum SystemModel {
NINTENDO_3DS,
NINTENDO_3DS_XL,
NEW_NINTENDO_3DS,
NINTENDO_2DS,
NEW_NINTENDO_3DS_XL
};
enum SystemLanguage {
LANGUAGE_JP,
LANGUAGE_EN,
LANGUAGE_FR,
LANGUAGE_DE,
LANGUAGE_IT,
LANGUAGE_ES,
LANGUAGE_ZH,
LANGUAGE_KO,
LANGUAGE_NL,
LANGUAGE_PT,
LANGUAGE_RU
};
static std::unique_ptr<FileSys::Archive_SystemSaveData> cfg_system_save_data;
static const u64 CFG_SAVE_ID = 0x00010017;
static const u64 CONSOLE_UNIQUE_ID = 0xDEADC0DE;
static const u32 CONSOLE_MODEL = NINTENDO_3DS_XL;
static const u8 CONSOLE_LANGUAGE = LANGUAGE_EN;
static const u32 CONFIG_SAVEFILE_SIZE = 0x8000;
static std::array<u8, CONFIG_SAVEFILE_SIZE> cfg_config_file_buffer = { };
/// TODO(Subv): Find out what this actually is
/// Thanks Normmatt for providing this information
static const u8 STEREO_CAMERA_SETTINGS[32] = {
0x00, 0x00, 0x78, 0x42, 0x00, 0x80, 0x90, 0x43, 0x9A, 0x99, 0x99, 0x42, 0xEC, 0x51, 0x38, 0x42,
0x00, 0x00, 0x20, 0x41, 0x00, 0x00, 0xA0, 0x40, 0xEC, 0x51, 0x5E, 0x42, 0x5C, 0x8F, 0xAC, 0x41
};
// TODO(Link Mauve): use a constexpr once MSVC starts supporting it.
#define C(code) ((code)[0] | ((code)[1] << 8))
static const std::array<u16, 187> country_codes = {
0, C("JP"), 0, 0, 0, 0, 0, 0, // 0-7
C("AI"), C("AG"), C("AR"), C("AW"), C("BS"), C("BB"), C("BZ"), C("BO"), // 8-15
C("BR"), C("VG"), C("CA"), C("KY"), C("CL"), C("CO"), C("CR"), C("DM"), // 16-23
C("DO"), C("EC"), C("SV"), C("GF"), C("GD"), C("GP"), C("GT"), C("GY"), // 24-31
C("HT"), C("HN"), C("JM"), C("MQ"), C("MX"), C("MS"), C("AN"), C("NI"), // 32-39
C("PA"), C("PY"), C("PE"), C("KN"), C("LC"), C("VC"), C("SR"), C("TT"), // 40-47
C("TC"), C("US"), C("UY"), C("VI"), C("VE"), 0, 0, 0, // 48-55
0, 0, 0, 0, 0, 0, 0, 0, // 56-63
C("AL"), C("AU"), C("AT"), C("BE"), C("BA"), C("BW"), C("BG"), C("HR"), // 64-71
C("CY"), C("CZ"), C("DK"), C("EE"), C("FI"), C("FR"), C("DE"), C("GR"), // 72-79
C("HU"), C("IS"), C("IE"), C("IT"), C("LV"), C("LS"), C("LI"), C("LT"), // 80-87
C("LU"), C("MK"), C("MT"), C("ME"), C("MZ"), C("NA"), C("NL"), C("NZ"), // 88-95
C("NO"), C("PL"), C("PT"), C("RO"), C("RU"), C("RS"), C("SK"), C("SI"), // 96-103
C("ZA"), C("ES"), C("SZ"), C("SE"), C("CH"), C("TR"), C("GB"), C("ZM"), // 104-111
C("ZW"), C("AZ"), C("MR"), C("ML"), C("NE"), C("TD"), C("SD"), C("ER"), // 112-119
C("DJ"), C("SO"), C("AD"), C("GI"), C("GG"), C("IM"), C("JE"), C("MC"), // 120-127
C("TW"), 0, 0, 0, 0, 0, 0, 0, // 128-135
C("KR"), 0, 0, 0, 0, 0, 0, 0, // 136-143
C("HK"), C("MO"), 0, 0, 0, 0, 0, 0, // 144-151
C("ID"), C("SG"), C("TH"), C("PH"), C("MY"), 0, 0, 0, // 152-159
C("CN"), 0, 0, 0, 0, 0, 0, 0, // 160-167
C("AE"), C("IN"), C("EG"), C("OM"), C("QA"), C("KW"), C("SA"), C("SY"), // 168-175
C("BH"), C("JO"), 0, 0, 0, 0, 0, 0, // 176-183
C("SM"), C("VA"), C("BM") // 184-186
};
#undef C
/**
* CFG_User::GetCountryCodeString service function
* Inputs:
* 1 : Country Code ID
* Outputs:
* 1 : Result of function, 0 on success, otherwise error code
* 2 : Country's 2-char string
*/
static void GetCountryCodeString(Service::Interface* self) {
u32* cmd_buffer = Kernel::GetCommandBuffer();
u32 country_code_id = cmd_buffer[1];
if (country_code_id >= country_codes.size() || 0 == country_codes[country_code_id]) {
LOG_ERROR(Service_CFG, "requested country code id=%d is invalid", country_code_id);
cmd_buffer[1] = ResultCode(ErrorDescription::NotFound, ErrorModule::Config, ErrorSummary::WrongArgument, ErrorLevel::Permanent).raw;
return;
}
cmd_buffer[1] = 0;
cmd_buffer[2] = country_codes[country_code_id];
}
/**
* CFG_User::GetCountryCodeID service function
* Inputs:
* 1 : Country Code 2-char string
* Outputs:
* 1 : Result of function, 0 on success, otherwise error code
* 2 : Country Code ID
*/
static void GetCountryCodeID(Service::Interface* self) {
u32* cmd_buffer = Kernel::GetCommandBuffer();
u16 country_code = cmd_buffer[1];
u16 country_code_id = 0;
// The following algorithm will fail if the first country code isn't 0.
_dbg_assert_(Service_CFG, country_codes[0] == 0);
for (size_t id = 0; id < country_codes.size(); ++id) {
if (country_codes[id] == country_code) {
country_code_id = id;
break;
}
}
if (0 == country_code_id) {
LOG_ERROR(Service_CFG, "requested country code name=%c%c is invalid", country_code & 0xff, country_code >> 8);
cmd_buffer[1] = ResultCode(ErrorDescription::NotFound, ErrorModule::Config, ErrorSummary::WrongArgument, ErrorLevel::Permanent).raw;
cmd_buffer[2] = 0xFFFF;
return;
}
cmd_buffer[1] = 0;
cmd_buffer[2] = country_code_id;
}
/// Block header in the config savedata file
struct SaveConfigBlockEntry {
u32 block_id;
u32 offset_or_data;
u16 size;
u16 flags;
};
/// The header of the config savedata file,
/// contains information about the blocks in the file
struct SaveFileConfig {
u16 total_entries;
u16 data_entries_offset;
SaveConfigBlockEntry block_entries[1479];
u32 unknown;
};
/**
* Reads a block with the specified id and flag from the Config savegame buffer
* and writes the output to output.
* The input size must match exactly the size of the requested block
* TODO(Subv): This should actually be in some file common to the CFG process
* @param block_id The id of the block we want to read
* @param size The size of the block we want to read
* @param flag The requested block must have this flag set
* @param output A pointer where we will write the read data
* @returns ResultCode indicating the result of the operation, 0 on success
*/
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),
[&](SaveConfigBlockEntry const& 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[config->data_entries_offset + itr->offset_or_data], itr->size);
return RESULT_SUCCESS;
}
/**
* Creates a block with the specified id and writes the input data to the cfg savegame buffer in memory.
* The config savegame file in the filesystem is not updated.
* TODO(Subv): This should actually be in some file common to the CFG process
* @param block_id The id of the block we want to create
* @param size The size of the block we want to create
* @param flag The flags of the new block
* @param data A pointer containing the data we will write to the new block
* @returns ResultCode indicating the result of the operation, 0 on success
*/
ResultCode CreateConfigInfoBlk(u32 block_id, u32 size, u32 flags, u8 const* data) {
SaveFileConfig* config = reinterpret_cast<SaveFileConfig*>(cfg_config_file_buffer.data());
// Insert the block header with offset 0 for now
config->block_entries[config->total_entries] = { block_id, 0, size, flags };
if (size > 4) {
s32 total_entries = config->total_entries - 1;
u32 offset = 0;
// Perform a search to locate the next offset for the new data
while (total_entries >= 0) {
// Ignore the blocks that don't have a separate data offset
if (config->block_entries[total_entries].size <= 4) {
--total_entries;
continue;
}
offset = config->block_entries[total_entries].offset_or_data +
config->block_entries[total_entries].size;
break;
}
config->block_entries[config->total_entries].offset_or_data = offset;
// Write the data at the new offset
memcpy(&cfg_config_file_buffer[config->data_entries_offset + 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;
}
/**
* Deletes the config savegame file from the filesystem, the buffer in memory is not affected
* TODO(Subv): This should actually be in some file common to the CFG process
* @returns ResultCode indicating the result of the operation, 0 on 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
}
/**
* Writes the config savegame memory buffer to the config savegame file in the filesystem
* TODO(Subv): This should actually be in some file common to the CFG process
* @returns ResultCode indicating the result of the operation, 0 on success
*/
ResultCode UpdateConfigNANDSavegame() {
FileSys::Mode mode;
mode.hex = 0;
mode.write_flag = 1;
mode.create_flag = 1;
FileSys::Path path("config");
auto file = cfg_system_save_data->OpenFile(path, mode);
_dbg_assert_msg_(Service_CFG, file != nullptr, "could not open file");
file->Write(0, CONFIG_SAVEFILE_SIZE, 1, cfg_config_file_buffer.data());
return RESULT_SUCCESS;
}
/**
* Re-creates the config savegame file in memory and the filesystem with the default blocks
* TODO(Subv): This should actually be in some file common to the CFG process
* @returns ResultCode indicating the result of the operation, 0 on success
*/
ResultCode FormatConfig() {
ResultCode res = DeleteConfigNANDSaveFile();
if (!res.IsSuccess())
return res;
// Delete the old data
std::fill(cfg_config_file_buffer.begin(), cfg_config_file_buffer.end(), 0);
// Create the header
SaveFileConfig* config = reinterpret_cast<SaveFileConfig*>(cfg_config_file_buffer.data());
config->data_entries_offset = 0x455C;
// Insert the default blocks
res = CreateConfigInfoBlk(0x00050005, 0x20, 0xE, STEREO_CAMERA_SETTINGS);
if (!res.IsSuccess())
return res;
res = CreateConfigInfoBlk(0x00090001, 0x8, 0xE, reinterpret_cast<u8 const*>(&CONSOLE_UNIQUE_ID));
if (!res.IsSuccess())
return res;
res = CreateConfigInfoBlk(0x000F0004, 0x4, 0x8, reinterpret_cast<u8 const*>(&CONSOLE_MODEL));
if (!res.IsSuccess())
return res;
res = CreateConfigInfoBlk(0x000A0002, 0x1, 0xA, &CONSOLE_LANGUAGE);
if (!res.IsSuccess())
return res;
// Save the buffer to the file
res = UpdateConfigNANDSavegame();
if (!res.IsSuccess())
return res;
return RESULT_SUCCESS;
}
/**
* CFG_User::GetConfigInfoBlk2 service function
* Inputs:
* 1 : Size
* 2 : Block ID
* 3 : Descriptor for the output buffer
* 4 : Output buffer pointer
* Outputs:
* 1 : Result of function, 0 on success, otherwise error code
*/
static void GetConfigInfoBlk2(Service::Interface* self) {
u32* cmd_buffer = Kernel::GetCommandBuffer();
u32 size = cmd_buffer[1];
u32 block_id = cmd_buffer[2];
u8* data_pointer = Memory::GetPointer(cmd_buffer[4]);
if (data_pointer == nullptr) {
cmd_buffer[1] = -1; // TODO(Subv): Find the right error code
return;
}
cmd_buffer[1] = GetConfigInfoBlock(block_id, size, 0x2, data_pointer).raw;
}
/**
* CFG_User::GetSystemModel service function
* Outputs:
* 1 : Result of function, 0 on success, otherwise error code
* 2 : Model of the console
*/
static void GetSystemModel(Service::Interface* self) {
u32* cmd_buffer = Kernel::GetCommandBuffer();
u32 data;
cmd_buffer[1] = GetConfigInfoBlock(0x000F0004, 4, 0x8,
reinterpret_cast<u8*>(&data)).raw; // TODO(Subv): Find out the correct error codes
cmd_buffer[2] = data & 0xFF;
}
/**
* CFG_User::GetModelNintendo2DS service function
* Outputs:
* 1 : Result of function, 0 on success, otherwise error code
* 2 : 0 if the system is a Nintendo 2DS, 1 otherwise
*/
static void GetModelNintendo2DS(Service::Interface* self) {
u32* cmd_buffer = Kernel::GetCommandBuffer();
u32 data;
cmd_buffer[1] = GetConfigInfoBlock(0x000F0004, 4, 0x8,
reinterpret_cast<u8*>(&data)).raw; // TODO(Subv): Find out the correct error codes
u8 model = data & 0xFF;
if (model == NINTENDO_2DS)
cmd_buffer[2] = 0;
else
cmd_buffer[2] = 1;
}
const Interface::FunctionInfo FunctionTable[] = {
{0x00010082, GetConfigInfoBlk2, "GetConfigInfoBlk2"},
{0x00020000, nullptr, "SecureInfoGetRegion"},
{0x00030000, nullptr, "GenHashConsoleUnique"},
{0x00040000, nullptr, "GetRegionCanadaUSA"},
{0x00050000, GetSystemModel, "GetSystemModel"},
{0x00060000, GetModelNintendo2DS, "GetModelNintendo2DS"},
{0x00070040, nullptr, "unknown"},
{0x00080080, nullptr, "unknown"},
{0x00090040, GetCountryCodeString, "GetCountryCodeString"},
{0x000A0040, GetCountryCodeID, "GetCountryCodeID"},
};
////////////////////////////////////////////////////////////////////////////////////////////////////
// Interface class
Interface::Interface() {
Register(FunctionTable, ARRAY_SIZE(FunctionTable));
// 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 syssavedata_directory = FileUtil::GetUserPath(D_SYSSAVEDATA_IDX);
cfg_system_save_data = std::make_unique<FileSys::Archive_SystemSaveData>(syssavedata_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.hex = 0;
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;
}
FormatConfig();
}
Interface::~Interface() {
}
} // namespace
