mirror of
https://git.suyu.dev/suyu/suyu.git
synced 2024-11-17 20:32:45 +01:00
303 lines
10 KiB
C++
303 lines
10 KiB
C++
// Copyright 2018 yuzu emulator team
|
|
// Licensed under GPLv2 or any later version
|
|
// Refer to the license.txt file included.
|
|
|
|
#include <vector>
|
|
|
|
#include "common/common_funcs.h"
|
|
#include "common/file_util.h"
|
|
#include "common/logging/log.h"
|
|
#include "common/swap.h"
|
|
#include "core/core.h"
|
|
#include "core/file_sys/program_metadata.h"
|
|
#include "core/file_sys/romfs_factory.h"
|
|
#include "core/hle/kernel/process.h"
|
|
#include "core/hle/kernel/resource_limit.h"
|
|
#include "core/hle/service/filesystem/filesystem.h"
|
|
#include "core/loader/nca.h"
|
|
#include "core/loader/nso.h"
|
|
#include "core/memory.h"
|
|
|
|
namespace Loader {
|
|
|
|
// Media offsets in headers are stored divided by 512. Mult. by this to get real offset.
|
|
constexpr u64 MEDIA_OFFSET_MULTIPLIER = 0x200;
|
|
|
|
constexpr u64 SECTION_HEADER_SIZE = 0x200;
|
|
constexpr u64 SECTION_HEADER_OFFSET = 0x400;
|
|
|
|
enum class NcaContentType : u8 { Program = 0, Meta = 1, Control = 2, Manual = 3, Data = 4 };
|
|
|
|
enum class NcaSectionFilesystemType : u8 { PFS0 = 0x2, ROMFS = 0x3 };
|
|
|
|
struct NcaSectionTableEntry {
|
|
u32_le media_offset;
|
|
u32_le media_end_offset;
|
|
INSERT_PADDING_BYTES(0x8);
|
|
};
|
|
static_assert(sizeof(NcaSectionTableEntry) == 0x10, "NcaSectionTableEntry has incorrect size.");
|
|
|
|
struct NcaHeader {
|
|
std::array<u8, 0x100> rsa_signature_1;
|
|
std::array<u8, 0x100> rsa_signature_2;
|
|
u32_le magic;
|
|
u8 is_system;
|
|
NcaContentType content_type;
|
|
u8 crypto_type;
|
|
u8 key_index;
|
|
u64_le size;
|
|
u64_le title_id;
|
|
INSERT_PADDING_BYTES(0x4);
|
|
u32_le sdk_version;
|
|
u8 crypto_type_2;
|
|
INSERT_PADDING_BYTES(15);
|
|
std::array<u8, 0x10> rights_id;
|
|
std::array<NcaSectionTableEntry, 0x4> section_tables;
|
|
std::array<std::array<u8, 0x20>, 0x4> hash_tables;
|
|
std::array<std::array<u8, 0x10>, 0x4> key_area;
|
|
INSERT_PADDING_BYTES(0xC0);
|
|
};
|
|
static_assert(sizeof(NcaHeader) == 0x400, "NcaHeader has incorrect size.");
|
|
|
|
struct NcaSectionHeaderBlock {
|
|
INSERT_PADDING_BYTES(3);
|
|
NcaSectionFilesystemType filesystem_type;
|
|
u8 crypto_type;
|
|
INSERT_PADDING_BYTES(3);
|
|
};
|
|
static_assert(sizeof(NcaSectionHeaderBlock) == 0x8, "NcaSectionHeaderBlock has incorrect size.");
|
|
|
|
struct Pfs0Superblock {
|
|
NcaSectionHeaderBlock header_block;
|
|
std::array<u8, 0x20> hash;
|
|
u32_le size;
|
|
INSERT_PADDING_BYTES(4);
|
|
u64_le hash_table_offset;
|
|
u64_le hash_table_size;
|
|
u64_le pfs0_header_offset;
|
|
u64_le pfs0_size;
|
|
INSERT_PADDING_BYTES(432);
|
|
};
|
|
static_assert(sizeof(Pfs0Superblock) == 0x200, "Pfs0Superblock has incorrect size.");
|
|
|
|
static bool IsValidNca(const NcaHeader& header) {
|
|
return header.magic == Common::MakeMagic('N', 'C', 'A', '2') ||
|
|
header.magic == Common::MakeMagic('N', 'C', 'A', '3');
|
|
}
|
|
|
|
// TODO(DarkLordZach): Add support for encrypted.
|
|
class Nca final {
|
|
std::vector<FileSys::PartitionFilesystem> pfs;
|
|
std::vector<u64> pfs_offset;
|
|
|
|
u64 romfs_offset = 0;
|
|
u64 romfs_size = 0;
|
|
|
|
boost::optional<u8> exefs_id = boost::none;
|
|
|
|
FileUtil::IOFile file;
|
|
std::string path;
|
|
|
|
u64 GetExeFsFileOffset(const std::string& file_name) const;
|
|
u64 GetExeFsFileSize(const std::string& file_name) const;
|
|
|
|
public:
|
|
ResultStatus Load(FileUtil::IOFile&& file, std::string path);
|
|
|
|
FileSys::PartitionFilesystem GetPfs(u8 id) const;
|
|
|
|
u64 GetRomFsOffset() const;
|
|
u64 GetRomFsSize() const;
|
|
|
|
std::vector<u8> GetExeFsFile(const std::string& file_name);
|
|
};
|
|
|
|
static bool IsPfsExeFs(const FileSys::PartitionFilesystem& pfs) {
|
|
// According to switchbrew, an exefs must only contain these two files:
|
|
return pfs.GetFileSize("main") > 0 && pfs.GetFileSize("main.npdm") > 0;
|
|
}
|
|
|
|
ResultStatus Nca::Load(FileUtil::IOFile&& in_file, std::string in_path) {
|
|
file = std::move(in_file);
|
|
path = in_path;
|
|
file.Seek(0, SEEK_SET);
|
|
std::array<u8, sizeof(NcaHeader)> header_array{};
|
|
if (sizeof(NcaHeader) != file.ReadBytes(header_array.data(), sizeof(NcaHeader)))
|
|
LOG_CRITICAL(Loader, "File reader errored out during header read.");
|
|
|
|
NcaHeader header{};
|
|
std::memcpy(&header, header_array.data(), sizeof(NcaHeader));
|
|
if (!IsValidNca(header))
|
|
return ResultStatus::ErrorInvalidFormat;
|
|
|
|
int number_sections =
|
|
std::count_if(std::begin(header.section_tables), std::end(header.section_tables),
|
|
[](NcaSectionTableEntry entry) { return entry.media_offset > 0; });
|
|
|
|
for (int i = 0; i < number_sections; ++i) {
|
|
// Seek to beginning of this section.
|
|
file.Seek(SECTION_HEADER_OFFSET + i * SECTION_HEADER_SIZE, SEEK_SET);
|
|
std::array<u8, sizeof(NcaSectionHeaderBlock)> array{};
|
|
if (sizeof(NcaSectionHeaderBlock) !=
|
|
file.ReadBytes(array.data(), sizeof(NcaSectionHeaderBlock)))
|
|
LOG_CRITICAL(Loader, "File reader errored out during header read.");
|
|
|
|
NcaSectionHeaderBlock block{};
|
|
std::memcpy(&block, array.data(), sizeof(NcaSectionHeaderBlock));
|
|
|
|
if (block.filesystem_type == NcaSectionFilesystemType::ROMFS) {
|
|
romfs_offset = header.section_tables[i].media_offset * MEDIA_OFFSET_MULTIPLIER;
|
|
romfs_size =
|
|
header.section_tables[i].media_end_offset * MEDIA_OFFSET_MULTIPLIER - romfs_offset;
|
|
} else if (block.filesystem_type == NcaSectionFilesystemType::PFS0) {
|
|
Pfs0Superblock sb{};
|
|
// Seek back to beginning of this section.
|
|
file.Seek(SECTION_HEADER_OFFSET + i * SECTION_HEADER_SIZE, SEEK_SET);
|
|
if (sizeof(Pfs0Superblock) != file.ReadBytes(&sb, sizeof(Pfs0Superblock)))
|
|
LOG_CRITICAL(Loader, "File reader errored out during header read.");
|
|
|
|
u64 offset = (static_cast<u64>(header.section_tables[i].media_offset) *
|
|
MEDIA_OFFSET_MULTIPLIER) +
|
|
sb.pfs0_header_offset;
|
|
FileSys::PartitionFilesystem npfs{};
|
|
ResultStatus status = npfs.Load(path, offset);
|
|
|
|
if (status == ResultStatus::Success) {
|
|
pfs.emplace_back(std::move(npfs));
|
|
pfs_offset.emplace_back(offset);
|
|
}
|
|
}
|
|
}
|
|
|
|
for (size_t i = 0; i < pfs.size(); ++i) {
|
|
if (IsPfsExeFs(pfs[i]))
|
|
exefs_id = i;
|
|
}
|
|
|
|
return ResultStatus::Success;
|
|
}
|
|
|
|
FileSys::PartitionFilesystem Nca::GetPfs(u8 id) const {
|
|
return pfs[id];
|
|
}
|
|
|
|
u64 Nca::GetExeFsFileOffset(const std::string& file_name) const {
|
|
if (exefs_id == boost::none)
|
|
return 0;
|
|
return pfs[*exefs_id].GetFileOffset(file_name) + pfs_offset[*exefs_id];
|
|
}
|
|
|
|
u64 Nca::GetExeFsFileSize(const std::string& file_name) const {
|
|
if (exefs_id == boost::none)
|
|
return 0;
|
|
return pfs[*exefs_id].GetFileSize(file_name);
|
|
}
|
|
|
|
u64 Nca::GetRomFsOffset() const {
|
|
return romfs_offset;
|
|
}
|
|
|
|
u64 Nca::GetRomFsSize() const {
|
|
return romfs_size;
|
|
}
|
|
|
|
std::vector<u8> Nca::GetExeFsFile(const std::string& file_name) {
|
|
std::vector<u8> out(GetExeFsFileSize(file_name));
|
|
file.Seek(GetExeFsFileOffset(file_name), SEEK_SET);
|
|
file.ReadBytes(out.data(), GetExeFsFileSize(file_name));
|
|
return out;
|
|
}
|
|
|
|
AppLoader_NCA::AppLoader_NCA(FileUtil::IOFile&& file, std::string filepath)
|
|
: AppLoader(std::move(file)), filepath(std::move(filepath)) {}
|
|
|
|
FileType AppLoader_NCA::IdentifyType(FileUtil::IOFile& file, const std::string&) {
|
|
file.Seek(0, SEEK_SET);
|
|
std::array<u8, 0x400> header_enc_array{};
|
|
if (0x400 != file.ReadBytes(header_enc_array.data(), 0x400))
|
|
return FileType::Error;
|
|
|
|
// TODO(DarkLordZach): Assuming everything is decrypted. Add crypto support.
|
|
NcaHeader header{};
|
|
std::memcpy(&header, header_enc_array.data(), sizeof(NcaHeader));
|
|
|
|
if (IsValidNca(header) && header.content_type == NcaContentType::Program)
|
|
return FileType::NCA;
|
|
|
|
return FileType::Error;
|
|
}
|
|
|
|
ResultStatus AppLoader_NCA::Load(Kernel::SharedPtr<Kernel::Process>& process) {
|
|
if (is_loaded) {
|
|
return ResultStatus::ErrorAlreadyLoaded;
|
|
}
|
|
if (!file.IsOpen()) {
|
|
return ResultStatus::Error;
|
|
}
|
|
|
|
nca = std::make_unique<Nca>();
|
|
ResultStatus result = nca->Load(std::move(file), filepath);
|
|
if (result != ResultStatus::Success) {
|
|
return result;
|
|
}
|
|
|
|
result = metadata.Load(nca->GetExeFsFile("main.npdm"));
|
|
if (result != ResultStatus::Success) {
|
|
return result;
|
|
}
|
|
metadata.Print();
|
|
|
|
const FileSys::ProgramAddressSpaceType arch_bits{metadata.GetAddressSpaceType()};
|
|
if (arch_bits == FileSys::ProgramAddressSpaceType::Is32Bit) {
|
|
return ResultStatus::ErrorUnsupportedArch;
|
|
}
|
|
|
|
VAddr next_load_addr{Memory::PROCESS_IMAGE_VADDR};
|
|
for (const auto& module : {"rtld", "main", "subsdk0", "subsdk1", "subsdk2", "subsdk3",
|
|
"subsdk4", "subsdk5", "subsdk6", "subsdk7", "sdk"}) {
|
|
const VAddr load_addr = next_load_addr;
|
|
next_load_addr = AppLoader_NSO::LoadModule(module, nca->GetExeFsFile(module), load_addr);
|
|
if (next_load_addr) {
|
|
LOG_DEBUG(Loader, "loaded module {} @ 0x{:X}", module, load_addr);
|
|
} else {
|
|
next_load_addr = load_addr;
|
|
}
|
|
}
|
|
|
|
process->program_id = metadata.GetTitleID();
|
|
process->svc_access_mask.set();
|
|
process->address_mappings = default_address_mappings;
|
|
process->resource_limit =
|
|
Kernel::ResourceLimit::GetForCategory(Kernel::ResourceLimitCategory::APPLICATION);
|
|
process->Run(Memory::PROCESS_IMAGE_VADDR, metadata.GetMainThreadPriority(),
|
|
metadata.GetMainThreadStackSize());
|
|
|
|
if (nca->GetRomFsSize() > 0)
|
|
Service::FileSystem::RegisterFileSystem(std::make_unique<FileSys::RomFS_Factory>(*this),
|
|
Service::FileSystem::Type::RomFS);
|
|
|
|
is_loaded = true;
|
|
return ResultStatus::Success;
|
|
}
|
|
|
|
ResultStatus AppLoader_NCA::ReadRomFS(std::shared_ptr<FileUtil::IOFile>& romfs_file, u64& offset,
|
|
u64& size) {
|
|
if (nca->GetRomFsSize() == 0) {
|
|
LOG_DEBUG(Loader, "No RomFS available");
|
|
return ResultStatus::ErrorNotUsed;
|
|
}
|
|
|
|
romfs_file = std::make_shared<FileUtil::IOFile>(filepath, "rb");
|
|
|
|
offset = nca->GetRomFsOffset();
|
|
size = nca->GetRomFsSize();
|
|
|
|
LOG_DEBUG(Loader, "RomFS offset: 0x{:016X}", offset);
|
|
LOG_DEBUG(Loader, "RomFS size: 0x{:016X}", size);
|
|
|
|
return ResultStatus::Success;
|
|
}
|
|
|
|
AppLoader_NCA::~AppLoader_NCA() = default;
|
|
|
|
} // namespace Loader
|