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APT: load different shared font depending on the region

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This commit is contained in:
wwylele 2017-08-02 22:56:44 +03:00
parent f251b8873a
commit 59a9aaf388
3 changed files with 155 additions and 135 deletions
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276
src/core/hle/service/apt/apt.cpp
View File

@ -19,6 +19,7 @@
#include "core/hle/service/apt/apt_s.h"
#include "core/hle/service/apt/apt_u.h"
#include "core/hle/service/apt/bcfnt/bcfnt.h"
#include "core/hle/service/cfg/cfg.h"
#include "core/hle/service/fs/archive.h"
#include "core/hle/service/ptm/ptm.h"
#include "core/hle/service/service.h"
@ -198,6 +199,143 @@ void Initialize(Service::Interface* self) {
Kernel::g_handle_table.Create(slot_data->parameter_event).Unwrap());
}
static u32 DecompressLZ11(const u8* in, u8* out) {
u32_le decompressed_size;
memcpy(&decompressed_size, in, sizeof(u32));
in += 4;
u8 type = decompressed_size & 0xFF;
ASSERT(type == 0x11);
decompressed_size >>= 8;
u32 current_out_size = 0;
u8 flags = 0, mask = 1;
while (current_out_size < decompressed_size) {
if (mask == 1) {
flags = *(in++);
mask = 0x80;
} else {
mask >>= 1;
}
if (flags & mask) {
u8 byte1 = *(in++);
u32 length = byte1 >> 4;
u32 offset;
if (length == 0) {
u8 byte2 = *(in++);
u8 byte3 = *(in++);
length = (((byte1 & 0x0F) << 4) | (byte2 >> 4)) + 0x11;
offset = (((byte2 & 0x0F) << 8) | byte3) + 0x1;
} else if (length == 1) {
u8 byte2 = *(in++);
u8 byte3 = *(in++);
u8 byte4 = *(in++);
length = (((byte1 & 0x0F) << 12) | (byte2 << 4) | (byte3 >> 4)) + 0x111;
offset = (((byte3 & 0x0F) << 8) | byte4) + 0x1;
} else {
u8 byte2 = *(in++);
length = (byte1 >> 4) + 0x1;
offset = (((byte1 & 0x0F) << 8) | byte2) + 0x1;
}
for (u32 i = 0; i < length; i++) {
*out = *(out - offset);
++out;
}
current_out_size += length;
} else {
*(out++) = *(in++);
current_out_size++;
}
}
return decompressed_size;
}
static bool LoadSharedFont() {
u8 font_region_code;
switch (CFG::GetRegionValue()) {
case 4: // CHN
font_region_code = 2;
break;
case 5: // KOR
font_region_code = 3;
break;
case 6: // TWN
font_region_code = 4;
break;
default: // JPN/EUR/USA
font_region_code = 1;
break;
}
const u64_le shared_font_archive_id_low = 0x0004009b00014002 | ((font_region_code - 1) << 8);
const u64_le shared_font_archive_id_high = 0x00000001ffffff00;
std::vector<u8> shared_font_archive_id(16);
std::memcpy(&shared_font_archive_id[0], &shared_font_archive_id_low, sizeof(u64));
std::memcpy(&shared_font_archive_id[8], &shared_font_archive_id_high, sizeof(u64));
FileSys::Path archive_path(shared_font_archive_id);
auto archive_result = Service::FS::OpenArchive(Service::FS::ArchiveIdCode::NCCH, archive_path);
if (archive_result.Failed())
return false;
std::vector<u8> romfs_path(20, 0); // 20-byte all zero path for opening RomFS
FileSys::Path file_path(romfs_path);
FileSys::Mode open_mode = {};
open_mode.read_flag.Assign(1);
auto file_result = Service::FS::OpenFileFromArchive(*archive_result, file_path, open_mode);
if (file_result.Failed())
return false;
auto romfs = std::move(file_result).Unwrap();
std::vector<u8> romfs_buffer(romfs->backend->GetSize());
romfs->backend->Read(0, romfs_buffer.size(), romfs_buffer.data());
romfs->backend->Close();
const char16_t* file_name[4] = {u"cbf_std.bcfnt.lz", u"cbf_zh-Hans-CN.bcfnt.lz",
u"cbf_ko-Hang-KR.bcfnt.lz", u"cbf_zh-Hant-TW.bcfnt.lz"};
const u8* font_file =
RomFS::GetFilePointer(romfs_buffer.data(), {file_name[font_region_code - 1]});
if (font_file == nullptr)
return false;
struct {
u32_le status;
u32_le region;
u32_le decompressed_size;
INSERT_PADDING_WORDS(0x1D);
} shared_font_header{};
static_assert(sizeof(shared_font_header) == 0x80, "shared_font_header has incorrect size");
shared_font_header.status = 2; // successfully loaded
shared_font_header.region = font_region_code;
shared_font_header.decompressed_size =
DecompressLZ11(font_file, shared_font_mem->GetPointer(0x80));
std::memcpy(shared_font_mem->GetPointer(), &shared_font_header, sizeof(shared_font_header));
*shared_font_mem->GetPointer(0x83) = 'U'; // Change the magic from "CFNT" to "CFNU"
return true;
}
static bool LoadLegacySharedFont() {
// This is the legacy method to load shared font.
// The expected format is a decrypted, uncompressed BCFNT file with the 0x80 byte header
// generated by the APT:U service. The best way to get is by dumping it from RAM. We've provided
// a homebrew app to do this: https://github.com/citra-emu/3dsutils. Put the resulting file
// "shared_font.bin" in the Citra "sysdata" directory.
std::string filepath = FileUtil::GetUserPath(D_SYSDATA_IDX) + SHARED_FONT;
FileUtil::CreateFullPath(filepath); // Create path if not already created
FileUtil::IOFile file(filepath, "rb");
if (file.IsOpen()) {
file.ReadBytes(shared_font_mem->GetPointer(), file.GetSize());
return true;
}
return false;
}
void GetSharedFont(Service::Interface* self) {
IPC::RequestParser rp(Kernel::GetCommandBuffer(), 0x44, 0, 0); // 0x00440000
IPC::RequestBuilder rb = rp.MakeBuilder(2, 2);
@ -206,12 +344,21 @@ void GetSharedFont(Service::Interface* self) {
Core::Telemetry().AddField(Telemetry::FieldType::Session, "RequiresSharedFont", true);
if (!shared_font_loaded) {
// On real 3DS, font loading happens on booting. However, we load it on demand to coordinate
// with CFG region auto configuration, which happens later than APT initialization.
if (LoadSharedFont()) {
shared_font_loaded = true;
} else if (LoadLegacySharedFont()) {
LOG_WARNING(Service_APT, "Loaded shared font by legacy method");
shared_font_loaded = true;
} else {
LOG_ERROR(Service_APT, "shared font file missing - go dump it from your 3ds");
rb.Push<u32>(-1); // TODO: Find the right error code
rb.Skip(1 + 2, true);
Core::System::GetInstance().SetStatus(Core::System::ResultStatus::ErrorSharedFont);
return;
}
}
// The shared font has to be relocated to the new address before being passed to the
// application.
@ -863,125 +1010,6 @@ void CheckNew3DS(Service::Interface* self) {
LOG_WARNING(Service_APT, "(STUBBED) called");
}
static u32 DecompressLZ11(const u8* in, u8* out) {
u32_le decompressed_size;
memcpy(&decompressed_size, in, sizeof(u32));
in += 4;
u8 type = decompressed_size & 0xFF;
ASSERT(type == 0x11);
decompressed_size >>= 8;
u32 current_out_size = 0;
u8 flags = 0, mask = 1;
while (current_out_size < decompressed_size) {
if (mask == 1) {
flags = *(in++);
mask = 0x80;
} else {
mask >>= 1;
}
if (flags & mask) {
u8 byte1 = *(in++);
u32 length = byte1 >> 4;
u32 offset;
if (length == 0) {
u8 byte2 = *(in++);
u8 byte3 = *(in++);
length = (((byte1 & 0x0F) << 4) | (byte2 >> 4)) + 0x11;
offset = (((byte2 & 0x0F) << 8) | byte3) + 0x1;
} else if (length == 1) {
u8 byte2 = *(in++);
u8 byte3 = *(in++);
u8 byte4 = *(in++);
length = (((byte1 & 0x0F) << 12) | (byte2 << 4) | (byte3 >> 4)) + 0x111;
offset = (((byte3 & 0x0F) << 8) | byte4) + 0x1;
} else {
u8 byte2 = *(in++);
length = (byte1 >> 4) + 0x1;
offset = (((byte1 & 0x0F) << 8) | byte2) + 0x1;
}
for (u32 i = 0; i < length; i++) {
*out = *(out - offset);
++out;
}
current_out_size += length;
} else {
*(out++) = *(in++);
current_out_size++;
}
}
return decompressed_size;
}
static bool LoadSharedFont() {
// TODO (wwylele): load different font archive for region CHN/KOR/TWN
const u64_le shared_font_archive_id_low = 0x0004009b00014002;
const u64_le shared_font_archive_id_high = 0x00000001ffffff00;
std::vector<u8> shared_font_archive_id(16);
std::memcpy(&shared_font_archive_id[0], &shared_font_archive_id_low, sizeof(u64));
std::memcpy(&shared_font_archive_id[8], &shared_font_archive_id_high, sizeof(u64));
FileSys::Path archive_path(shared_font_archive_id);
auto archive_result = Service::FS::OpenArchive(Service::FS::ArchiveIdCode::NCCH, archive_path);
if (archive_result.Failed())
return false;
std::vector<u8> romfs_path(20, 0); // 20-byte all zero path for opening RomFS
FileSys::Path file_path(romfs_path);
FileSys::Mode open_mode = {};
open_mode.read_flag.Assign(1);
auto file_result = Service::FS::OpenFileFromArchive(*archive_result, file_path, open_mode);
if (file_result.Failed())
return false;
auto romfs = std::move(file_result).Unwrap();
std::vector<u8> romfs_buffer(romfs->backend->GetSize());
romfs->backend->Read(0, romfs_buffer.size(), romfs_buffer.data());
romfs->backend->Close();
const u8* font_file = RomFS::GetFilePointer(romfs_buffer.data(), {u"cbf_std.bcfnt.lz"});
if (font_file == nullptr)
return false;
struct {
u32_le status;
u32_le region;
u32_le decompressed_size;
INSERT_PADDING_WORDS(0x1D);
} shared_font_header{};
static_assert(sizeof(shared_font_header) == 0x80, "shared_font_header has incorrect size");
shared_font_header.status = 2; // successfully loaded
shared_font_header.region = 1; // region JPN/EUR/USA
shared_font_header.decompressed_size =
DecompressLZ11(font_file, shared_font_mem->GetPointer(0x80));
std::memcpy(shared_font_mem->GetPointer(), &shared_font_header, sizeof(shared_font_header));
*shared_font_mem->GetPointer(0x83) = 'U'; // Change the magic from "CFNT" to "CFNU"
return true;
}
static bool LoadLegacySharedFont() {
// This is the legacy method to load shared font.
// The expected format is a decrypted, uncompressed BCFNT file with the 0x80 byte header
// generated by the APT:U service. The best way to get is by dumping it from RAM. We've provided
// a homebrew app to do this: https://github.com/citra-emu/3dsutils. Put the resulting file
// "shared_font.bin" in the Citra "sysdata" directory.
std::string filepath = FileUtil::GetUserPath(D_SYSDATA_IDX) + SHARED_FONT;
FileUtil::CreateFullPath(filepath); // Create path if not already created
FileUtil::IOFile file(filepath, "rb");
if (file.IsOpen()) {
file.ReadBytes(shared_font_mem->GetPointer(), file.GetSize());
return true;
}
return false;
}
void Init() {
AddService(new APT_A_Interface);
AddService(new APT_S_Interface);
@ -995,16 +1023,6 @@ void Init() {
MemoryPermission::ReadWrite, MemoryPermission::Read, 0,
Kernel::MemoryRegion::SYSTEM, "APT:SharedFont");
if (LoadSharedFont()) {
shared_font_loaded = true;
} else if (LoadLegacySharedFont()) {
LOG_WARNING(Service_APT, "Loaded shared font by legacy method");
shared_font_loaded = true;
} else {
LOG_WARNING(Service_APT, "Unable to load shared font");
shared_font_loaded = false;
}
lock = Kernel::Mutex::Create(false, "APT_U:Lock");
cpu_percent = 0;

2
src/core/hle/service/cfg/cfg.cpp
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@ -168,7 +168,7 @@ void GetCountryCodeID(Service::Interface* self) {
cmd_buff[2] = country_code_id;
}
static u32 GetRegionValue() {
u32 GetRegionValue() {
if (Settings::values.region_value == Settings::REGION_VALUE_AUTO_SELECT)
return preferred_region_code;

2
src/core/hle/service/cfg/cfg.h
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@ -101,6 +101,8 @@ void GetCountryCodeString(Service::Interface* self);
*/
void GetCountryCodeID(Service::Interface* self);
u32 GetRegionValue();
/**
* CFG::SecureInfoGetRegion service function
* Inputs: