mirror of
https://github.com/DarkStore-3DS/Project_CTR.git
synced 2026-07-03 08:49:03 +00:00
Michael Scire
120 lines
3.5 KiB
C
120 lines
3.5 KiB
C
#ifndef _NCCH_H_
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#define _NCCH_H_
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#include <stdio.h>
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#include "types.h"
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#include "keyset.h"
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#include "filepath.h"
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#include "ctr.h"
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#include "exefs.h"
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#include "romfs.h"
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#include "exheader.h"
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#include "settings.h"
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typedef enum
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{
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NCCHTYPE_EXHEADER = 1,
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NCCHTYPE_EXEFS = 2,
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NCCHTYPE_ROMFS = 3,
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NCCHTYPE_LOGO = 4,
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NCCHTYPE_PLAINRGN = 5,
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} ctr_ncchtypes;
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typedef enum
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{
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NCCHCRYPTO_NONE = 0, //< already decrypted
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NCCHCRYPTO_FIXED = 1, //< fixed key crypto, used for SDK-made application titles and very very old system titles
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NCCHCRYPTO_OLD = (1<<1), //< crypto used before 7.0
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NCCHCRYPTO_SEVEN = (1<<2), //< crypto used starting with 7.0
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NCCHCRYPTO_NINETHREE = (1<<3), //< crypto used on N3DS starting with 9.3
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NCCHCRYPTO_NINESIX = (1<<4), //< crypto used on N3DS starting with 9.6
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NCCHCRYPTO_SEED = (1<<5), //< crypto used starting with 9.6 for preloading titles
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NCCHCRYPTO_SPECIAL_FSES = NCCHCRYPTO_SEVEN | NCCHCRYPTO_NINETHREE | NCCHCRYPTO_NINESIX | NCCHCRYPTO_SEED, //< ExeFS and RomFS need new keys
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NCCHCRYPTO_BROKEN = 0xFF //< Internal: seed crypto required but no seed set
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} ctr_ncchcryptotype;
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typedef struct
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{
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u8 signature[0x100];
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u8 magic[4];
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u8 contentsize[4];
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u8 partitionid[8];
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u8 makercode[2];
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u8 version[2];
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u8 seedcheck[4];
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u8 programid[8];
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u8 reserved1[0x10];
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u8 logohash[0x20];
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u8 productcode[0x10];
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u8 extendedheaderhash[0x20];
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u8 extendedheadersize[4];
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u8 reserved2[4];
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u8 flags[8];
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u8 plainregionoffset[4];
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u8 plainregionsize[4];
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u8 logooffset[4];
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u8 logosize[4];
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u8 exefsoffset[4];
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u8 exefssize[4];
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u8 exefshashregionsize[4];
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u8 reserved4[4];
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u8 romfsoffset[4];
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u8 romfssize[4];
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u8 romfshashregionsize[4];
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u8 reserved5[4];
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u8 exefssuperblockhash[0x20];
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u8 romfssuperblockhash[0x20];
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} ctr_ncchheader;
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typedef struct
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{
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FILE* file;
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u8 key[16];
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u8 special_key[16]; // used with the 7.x+ crypto methods
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u8 seed[16];
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u32 encrypted;
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u64 offset;
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u64 size;
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settings* usersettings;
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ctr_ncchheader header;
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ctr_aes_context aes;
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exefs_context exefs;
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romfs_context romfs;
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exheader_context exheader;
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int exefshashcheck;
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int romfshashcheck;
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int exheaderhashcheck;
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int logohashcheck;
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int headersigcheck;
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u64 extractsize;
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u32 extractflags;
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} ncch_context;
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void ncch_init(ncch_context* ctx);
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void ncch_process(ncch_context* ctx, u32 actions);
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void ncch_set_offset(ncch_context* ctx, u64 offset);
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void ncch_set_size(ncch_context* ctx, u64 size);
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void ncch_set_file(ncch_context* ctx, FILE* file);
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void ncch_set_usersettings(ncch_context* ctx, settings* usersettings);
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u64 ncch_get_exefs_offset(ncch_context* ctx);
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u64 ncch_get_exefs_size(ncch_context* ctx);
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u64 ncch_get_romfs_offset(ncch_context* ctx);
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u64 ncch_get_romfs_size(ncch_context* ctx);
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u64 ncch_get_exheader_offset(ncch_context* ctx);
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u64 ncch_get_exheader_size(ncch_context* ctx);
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u64 ncch_get_logo_offset(ncch_context* ctx);
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u64 ncch_get_logo_size(ncch_context* ctx);
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u64 ncch_get_plainrgn_offset(ncch_context* ctx);
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u64 ncch_get_plainrgn_size(ncch_context* ctx);
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void ncch_print(ncch_context* ctx);
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int ncch_signature_verify(ncch_context* ctx, rsakey2048* key);
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void ncch_verify(ncch_context* ctx, u32 flags);
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void ncch_save(ncch_context* ctx, u32 type, u32 flags);
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int ncch_extract_prepare(ncch_context* ctx, u32 type, u32 flags);
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int ncch_extract_buffer(ncch_context* ctx, u8* buffer, u32 buffersize, u32* outsize, u8 nocrypto);
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u64 ncch_get_mediaunit_size(ncch_context* ctx);
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void ncch_get_counter(ncch_context* ctx, u8 counter[16], u8 type);
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void ncch_determine_key(ncch_context* ctx, u32 actions);
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#endif // _NCCH_H_
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