Awoo-Installer/include/install/nca.hpp

#pragma once

#include <switch.h>

#define NCA_HEADER_SIZE 0x4000
#define MAGIC_NCA3 0x3341434E /* "NCA3" */
namespace tin::install
{
    struct NcaFsHeader
    {
        u8 _0x0;
        u8 _0x1;
        u8 partition_type;
        u8 fs_type;
        u8 crypt_type;
        u8 _0x5[0x3];
        u8 superblock_data[0x138];
        /*union {
            pfs0_superblock_t pfs0_superblock;
            romfs_superblock_t romfs_superblock;
            //nca0_romfs_superblock_t nca0_romfs_superblock;
            bktr_superblock_t bktr_superblock;
        };*/
        union {
            u64 section_ctr;
            struct {
                u32 section_ctr_low;
                u32 section_ctr_high;
            };
        };
        u8 _0x148[0xB8]; /* Padding. */
    } PACKED;

    static_assert(sizeof(NcaFsHeader) == 0x200, "NcaFsHeader must be 0x200");

    struct NcaSectionEntry
    {
        u32 media_start_offset;
        u32 media_end_offset;
        u8 _0x8[0x8]; /* Padding. */
    } PACKED;

    static_assert(sizeof(NcaSectionEntry) == 0x10, "NcaSectionEntry must be 0x10");

    struct NcaHeader
    {
        u8 fixed_key_sig[0x100]; /* RSA-PSS signature over header with fixed key. */
        u8 npdm_key_sig[0x100]; /* RSA-PSS signature over header with key in NPDM. */
        u32 magic;
        u8 distribution; /* System vs gamecard. */
        u8 content_type;
        u8 m_cryptoType; /* Which keyblob (field 1) */
        u8 m_kaekIndex; /* Which kaek index? */
        u64 nca_size; /* Entire archive size. */
        u64 m_titleId;
        u8 _0x218[0x4]; /* Padding. */
        union {
            uint32_t sdk_version; /* What SDK was this built with? */
            struct {
                u8 sdk_revision;
                u8 sdk_micro;
                u8 sdk_minor;
                u8 sdk_major;
            };
        };
        u8 m_cryptoType2; /* Which keyblob (field 2) */
        u8 _0x221[0xF]; /* Padding. */
        u64 m_rightsId[2]; /* Rights ID (for titlekey crypto). */
        NcaSectionEntry section_entries[4]; /* Section entry metadata. */
        u8 section_hashes[4 * 0x20]; /* SHA-256 hashes for each section header. */
        u8 m_keys[4 * 0x10]; /* Encrypted key area. */
        u8 _0x340[0xC0]; /* Padding. */
        NcaFsHeader fs_headers[4]; /* FS section headers. */
    } PACKED;

    static_assert(sizeof(NcaHeader) == 0xc00, "NcaHeader must be 0xc00");
}