mirror of
https://github.com/citra-emu/citra.git
synced 2024-12-19 11:11:11 +00:00
303 lines
8.5 KiB
C++
303 lines
8.5 KiB
C++
// Copyright 2017 Citra Emulator Project
|
|
// Licensed under GPLv2 or any later version
|
|
// Refer to the license.txt file included.
|
|
|
|
#pragma once
|
|
|
|
#include <cstddef>
|
|
#include <memory>
|
|
#include <string>
|
|
#include <vector>
|
|
#include "common/bit_field.h"
|
|
#include "common/common_types.h"
|
|
#include "common/file_util.h"
|
|
#include "common/swap.h"
|
|
#include "core/core.h"
|
|
#include "core/file_sys/romfs_reader.h"
|
|
|
|
////////////////////////////////////////////////////////////////////////////////////////////////////
|
|
/// NCCH header (Note: "NCCH" appears to be a publicly unknown acronym)
|
|
|
|
struct NCCH_Header {
|
|
u8 signature[0x100];
|
|
u32_le magic;
|
|
u32_le content_size;
|
|
u8 partition_id[8];
|
|
u16_le maker_code;
|
|
u16_le version;
|
|
u8 reserved_0[4];
|
|
u64_le program_id;
|
|
u8 reserved_1[0x10];
|
|
u8 logo_region_hash[0x20];
|
|
u8 product_code[0x10];
|
|
u8 extended_header_hash[0x20];
|
|
u32_le extended_header_size;
|
|
u8 reserved_2[4];
|
|
u8 reserved_flag[3];
|
|
u8 secondary_key_slot;
|
|
u8 platform;
|
|
enum class ContentType : u8 {
|
|
Application = 0,
|
|
SystemUpdate = 1,
|
|
Manual = 2,
|
|
Child = 3,
|
|
Trial = 4,
|
|
};
|
|
union {
|
|
BitField<0, 1, u8> is_data;
|
|
BitField<1, 1, u8> is_executable;
|
|
BitField<2, 3, ContentType> content_type;
|
|
};
|
|
u8 content_unit_size;
|
|
union {
|
|
BitField<0, 1, u8> fixed_key;
|
|
BitField<1, 1, u8> no_romfs;
|
|
BitField<2, 1, u8> no_crypto;
|
|
BitField<5, 1, u8> seed_crypto;
|
|
};
|
|
u32_le plain_region_offset;
|
|
u32_le plain_region_size;
|
|
u32_le logo_region_offset;
|
|
u32_le logo_region_size;
|
|
u32_le exefs_offset;
|
|
u32_le exefs_size;
|
|
u32_le exefs_hash_region_size;
|
|
u8 reserved_3[4];
|
|
u32_le romfs_offset;
|
|
u32_le romfs_size;
|
|
u32_le romfs_hash_region_size;
|
|
u8 reserved_4[4];
|
|
u8 exefs_super_block_hash[0x20];
|
|
u8 romfs_super_block_hash[0x20];
|
|
};
|
|
|
|
static_assert(sizeof(NCCH_Header) == 0x200, "NCCH header structure size is wrong");
|
|
|
|
////////////////////////////////////////////////////////////////////////////////////////////////////
|
|
// ExeFS (executable file system) headers
|
|
|
|
struct ExeFs_SectionHeader {
|
|
char name[8];
|
|
u32 offset;
|
|
u32 size;
|
|
};
|
|
|
|
struct ExeFs_Header {
|
|
ExeFs_SectionHeader section[8];
|
|
u8 reserved[0x80];
|
|
u8 hashes[8][0x20];
|
|
};
|
|
|
|
////////////////////////////////////////////////////////////////////////////////////////////////////
|
|
// ExHeader (executable file system header) headers
|
|
|
|
struct ExHeader_SystemInfoFlags {
|
|
u8 reserved[5];
|
|
u8 flag;
|
|
u8 remaster_version[2];
|
|
};
|
|
|
|
struct ExHeader_CodeSegmentInfo {
|
|
u32 address;
|
|
u32 num_max_pages;
|
|
u32 code_size;
|
|
};
|
|
|
|
struct ExHeader_CodeSetInfo {
|
|
u8 name[8];
|
|
ExHeader_SystemInfoFlags flags;
|
|
ExHeader_CodeSegmentInfo text;
|
|
u32 stack_size;
|
|
ExHeader_CodeSegmentInfo ro;
|
|
u8 reserved[4];
|
|
ExHeader_CodeSegmentInfo data;
|
|
u32 bss_size;
|
|
};
|
|
|
|
struct ExHeader_DependencyList {
|
|
u8 program_id[0x30][8];
|
|
};
|
|
|
|
struct ExHeader_SystemInfo {
|
|
u64 save_data_size;
|
|
u64_le jump_id;
|
|
u8 reserved_2[0x30];
|
|
};
|
|
|
|
struct ExHeader_StorageInfo {
|
|
u8 ext_save_data_id[8];
|
|
u8 system_save_data_id[8];
|
|
u8 reserved[8];
|
|
u8 access_info[7];
|
|
u8 other_attributes;
|
|
};
|
|
|
|
struct ExHeader_ARM11_SystemLocalCaps {
|
|
u64_le program_id;
|
|
u32_le core_version;
|
|
u8 reserved_flags[2];
|
|
union {
|
|
u8 flags0;
|
|
BitField<0, 2, u8> ideal_processor;
|
|
BitField<2, 2, u8> affinity_mask;
|
|
BitField<4, 4, u8> system_mode;
|
|
};
|
|
u8 priority;
|
|
u8 resource_limit_descriptor[0x10][2];
|
|
ExHeader_StorageInfo storage_info;
|
|
u8 service_access_control[0x20][8];
|
|
u8 ex_service_access_control[0x2][8];
|
|
u8 reserved[0xf];
|
|
u8 resource_limit_category;
|
|
};
|
|
|
|
struct ExHeader_ARM11_KernelCaps {
|
|
u32_le descriptors[28];
|
|
u8 reserved[0x10];
|
|
};
|
|
|
|
struct ExHeader_ARM9_AccessControl {
|
|
u8 descriptors[15];
|
|
u8 descversion;
|
|
};
|
|
|
|
struct ExHeader_Header {
|
|
ExHeader_CodeSetInfo codeset_info;
|
|
ExHeader_DependencyList dependency_list;
|
|
ExHeader_SystemInfo system_info;
|
|
ExHeader_ARM11_SystemLocalCaps arm11_system_local_caps;
|
|
ExHeader_ARM11_KernelCaps arm11_kernel_caps;
|
|
ExHeader_ARM9_AccessControl arm9_access_control;
|
|
struct {
|
|
u8 signature[0x100];
|
|
u8 ncch_public_key_modulus[0x100];
|
|
ExHeader_ARM11_SystemLocalCaps arm11_system_local_caps;
|
|
ExHeader_ARM11_KernelCaps arm11_kernel_caps;
|
|
ExHeader_ARM9_AccessControl arm9_access_control;
|
|
} access_desc;
|
|
};
|
|
|
|
static_assert(sizeof(ExHeader_Header) == 0x800, "ExHeader structure size is wrong");
|
|
|
|
////////////////////////////////////////////////////////////////////////////////////////////////////
|
|
// FileSys namespace
|
|
|
|
namespace FileSys {
|
|
|
|
/**
|
|
* Helper which implements an interface to deal with NCCH containers which can
|
|
* contain ExeFS archives or RomFS archives for games or other applications.
|
|
*/
|
|
class NCCHContainer {
|
|
public:
|
|
NCCHContainer(const std::string& filepath, u32 ncch_offset = 0);
|
|
NCCHContainer() {}
|
|
|
|
Loader::ResultStatus OpenFile(const std::string& filepath, u32 ncch_offset = 0);
|
|
|
|
/**
|
|
* Ensure ExeFS and exheader is loaded and ready for reading sections
|
|
* @return ResultStatus result of function
|
|
*/
|
|
Loader::ResultStatus Load();
|
|
|
|
/**
|
|
* Attempt to find overridden sections for the NCCH and mark the container as tainted
|
|
* if any are found.
|
|
* @return ResultStatus result of function
|
|
*/
|
|
Loader::ResultStatus LoadOverrides();
|
|
|
|
/**
|
|
* Reads an application ExeFS section of an NCCH file (e.g. .code, .logo, etc.)
|
|
* @param name Name of section to read out of NCCH file
|
|
* @param buffer Vector to read data into
|
|
* @return ResultStatus result of function
|
|
*/
|
|
Loader::ResultStatus LoadSectionExeFS(const char* name, std::vector<u8>& buffer);
|
|
|
|
/**
|
|
* Reads an application ExeFS section from external files instead of an NCCH file,
|
|
* (e.g. code.bin, logo.bcma.lz, icon.icn, banner.bnr)
|
|
* @param name Name of section to read from external files
|
|
* @param buffer Vector to read data into
|
|
* @return ResultStatus result of function
|
|
*/
|
|
Loader::ResultStatus LoadOverrideExeFSSection(const char* name, std::vector<u8>& buffer);
|
|
|
|
/**
|
|
* Get the RomFS of the NCCH container
|
|
* Since the RomFS can be huge, we return a file reference instead of copying to a buffer
|
|
* @param romfs_file The file containing the RomFS
|
|
* @param offset The offset the romfs begins on
|
|
* @param size The size of the romfs
|
|
* @return ResultStatus result of function
|
|
*/
|
|
Loader::ResultStatus ReadRomFS(std::shared_ptr<RomFSReader>& romfs_file);
|
|
|
|
/**
|
|
* Get the override RomFS of the NCCH container
|
|
* Since the RomFS can be huge, we return a file reference instead of copying to a buffer
|
|
* @param romfs_file The file containing the RomFS
|
|
* @param offset The offset the romfs begins on
|
|
* @param size The size of the romfs
|
|
* @return ResultStatus result of function
|
|
*/
|
|
Loader::ResultStatus ReadOverrideRomFS(std::shared_ptr<RomFSReader>& romfs_file);
|
|
|
|
/**
|
|
* Get the Program ID of the NCCH container
|
|
* @return ResultStatus result of function
|
|
*/
|
|
Loader::ResultStatus ReadProgramId(u64_le& program_id);
|
|
|
|
/**
|
|
* Checks whether the NCCH container contains an ExeFS
|
|
* @return bool check result
|
|
*/
|
|
bool HasExeFS();
|
|
|
|
/**
|
|
* Checks whether the NCCH container contains a RomFS
|
|
* @return bool check result
|
|
*/
|
|
bool HasRomFS();
|
|
|
|
/**
|
|
* Checks whether the NCCH container contains an ExHeader
|
|
* @return bool check result
|
|
*/
|
|
bool HasExHeader();
|
|
|
|
NCCH_Header ncch_header;
|
|
ExeFs_Header exefs_header;
|
|
ExHeader_Header exheader_header;
|
|
|
|
private:
|
|
bool has_header = false;
|
|
bool has_exheader = false;
|
|
bool has_exefs = false;
|
|
bool has_romfs = false;
|
|
|
|
bool is_tainted = false; // Are there parts of this container being overridden?
|
|
bool is_loaded = false;
|
|
bool is_compressed = false;
|
|
|
|
bool is_encrypted = false;
|
|
// for decrypting exheader, exefs header and icon/banner section
|
|
std::array<u8, 16> primary_key{};
|
|
std::array<u8, 16> secondary_key{}; // for decrypting romfs and .code section
|
|
std::array<u8, 16> exheader_ctr{};
|
|
std::array<u8, 16> exefs_ctr{};
|
|
std::array<u8, 16> romfs_ctr{};
|
|
|
|
u32 ncch_offset = 0; // Offset to NCCH header, can be 0 for NCCHs or non-zero for CIAs/NCSDs
|
|
u32 exefs_offset = 0;
|
|
|
|
std::string filepath;
|
|
FileUtil::IOFile file;
|
|
FileUtil::IOFile exefs_file;
|
|
};
|
|
|
|
} // namespace FileSys
|