mirror of
https://github.com/DarkMatterCore/nxdumptool.git
synced 2024-12-23 09:02:06 +00:00
NCA read (almost) done.
Missing BKTR stuff.
This commit is contained in:
parent
ccf36f4963
commit
0e5683b880
6 changed files with 416 additions and 228 deletions
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@ -779,7 +779,7 @@ static bool gamecardReadStorageArea(void *out, u64 read_size, u64 offset, bool l
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if (!(base_offset % GAMECARD_MEDIA_UNIT_SIZE) && !(read_size % GAMECARD_MEDIA_UNIT_SIZE))
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{
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/* Optimization for reads that are already aligned to GAMECARD_MEDIA_UNIT_SIZE bytes */
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/* Optimization for reads that are already aligned to a GAMECARD_MEDIA_UNIT_SIZE boundary */
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rc = fsStorageRead(&g_gameCardStorage, base_offset, out_u8, read_size);
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if (R_FAILED(rc))
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{
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@ -790,12 +790,13 @@ static bool gamecardReadStorageArea(void *out, u64 read_size, u64 offset, bool l
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success = true;
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} else {
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/* Fix offset and/or size to avoid unaligned reads */
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u64 block_start_offset = (base_offset - (base_offset % GAMECARD_MEDIA_UNIT_SIZE));
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u64 block_start_offset = ROUND_DOWN(base_offset, GAMECARD_MEDIA_UNIT_SIZE);
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u64 block_end_offset = ROUND_UP(base_offset + read_size, GAMECARD_MEDIA_UNIT_SIZE);
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u64 block_size = (block_end_offset - block_start_offset);
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u64 data_start_offset = (base_offset - block_start_offset);
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u64 chunk_size = (block_size > GAMECARD_READ_BUFFER_SIZE ? GAMECARD_READ_BUFFER_SIZE : block_size);
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u64 out_chunk_size = (block_size > GAMECARD_READ_BUFFER_SIZE ? (GAMECARD_READ_BUFFER_SIZE - (base_offset - block_start_offset)) : read_size);
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u64 out_chunk_size = (block_size > GAMECARD_READ_BUFFER_SIZE ? (GAMECARD_READ_BUFFER_SIZE - data_start_offset) : read_size);
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rc = fsStorageRead(&g_gameCardStorage, block_start_offset, g_gameCardReadBuf, chunk_size);
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if (R_FAILED(rc))
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@ -804,7 +805,7 @@ static bool gamecardReadStorageArea(void *out, u64 read_size, u64 offset, bool l
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goto out;
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}
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memcpy(out_u8, g_gameCardReadBuf + (base_offset - block_start_offset), out_chunk_size);
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memcpy(out_u8, g_gameCardReadBuf + data_start_offset, out_chunk_size);
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success = (block_size > GAMECARD_READ_BUFFER_SIZE ? gamecardReadStorageArea(out_u8 + out_chunk_size, read_size - out_chunk_size, base_offset + out_chunk_size, false) : true);
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}
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@ -165,8 +165,6 @@ int main(int argc, char *argv[])
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} else {
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printf("read failed\n");
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}
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free(buf);
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} else {
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printf("buf failed\n");
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}
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@ -271,22 +269,27 @@ int main(int argc, char *argv[])
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printf("ncm open storage succeeded\n");
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consoleUpdate(NULL);
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NcmContentId nca_id = {
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.c = { 0x8E, 0xF9, 0x20, 0xD4, 0x5E, 0xE1, 0x9E, 0xD1, 0xD2, 0x04, 0xC4, 0xC8, 0x22, 0x50, 0x79, 0xE8 } // Untitled Goose Game
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// Untitled Goose Game
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NcmPackagedContentInfo content_info = {
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.hash = {
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0x8E, 0xF9, 0x20, 0xD4, 0x5E, 0xE1, 0x9E, 0xD1, 0xD2, 0x04, 0xC4, 0xC8, 0x22, 0x50, 0x79, 0xE8,
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0x8E, 0xF9, 0x20, 0xD4, 0x5E, 0xE1, 0x9E, 0xD1, 0xD2, 0x04, 0xC4, 0xC8, 0x22, 0x50, 0x79, 0xE8
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},
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.info = {
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.content_id = {
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.c = { 0x8E, 0xF9, 0x20, 0xD4, 0x5E, 0xE1, 0x9E, 0xD1, 0xD2, 0x04, 0xC4, 0xC8, 0x22, 0x50, 0x79, 0xE8 }
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},
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.size = {
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0x00, 0x40, 0xAD, 0x31, 0x00, 0x00
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},
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.content_type = NcmContentType_Program,
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.id_offset = 0
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}
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};
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u8 nca_hash[SHA256_HASH_SIZE] = {
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0x8E, 0xF9, 0x20, 0xD4, 0x5E, 0xE1, 0x9E, 0xD1, 0xD2, 0x04, 0xC4, 0xC8, 0x22, 0x50, 0x79, 0xE8,
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0x8E, 0xF9, 0x20, 0xD4, 0x5E, 0xE1, 0x9E, 0xD1, 0xD2, 0x04, 0xC4, 0xC8, 0x22, 0x50, 0x79, 0xE8
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};
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u8 nca_size[0x6] = {
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0x00, 0x40, 0xAD, 0x31, 0x00, 0x00
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};
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if (ncaProcessContent(nca_ctx, &tik, NcmStorageId_SdCard, &ncm_storage, &nca_id, nca_hash, NcmContentType_Program, nca_size, 0, 0))
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if (ncaInitializeContext(nca_ctx, &tik, NcmStorageId_SdCard, &ncm_storage, 0, &content_info))
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{
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printf("nca process succeeded\n");
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printf("nca initialize ctx succeeded\n");
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consoleUpdate(NULL);
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tmp_file = fopen("sdmc:/nca_ctx.bin", "wb");
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@ -299,8 +302,43 @@ int main(int argc, char *argv[])
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} else {
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printf("nca ctx not saved\n");
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}
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consoleUpdate(NULL);
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tmp_file = fopen("sdmc:/section0.bin", "wb");
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if (tmp_file)
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{
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printf("nca section0 created\n");
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consoleUpdate(NULL);
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u64 curpos = 0;
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u64 blksize = (u64)0x400000;
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u64 total = nca_ctx->fs_contexts[0].section_size;
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for(u64 curpos = 0; curpos < total; curpos += blksize)
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{
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if (blksize > (total - curpos)) blksize = (total - curpos);
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if (!ncaReadFsSection(&(nca_ctx->fs_contexts[0]), buf, blksize, curpos))
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{
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printf("nca read section failed\n");
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break;
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}
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fwrite(buf, 1, blksize, tmp_file);
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}
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if (curpos >= total) printf("nca read section success\n");
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consoleUpdate(NULL);
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fclose(tmp_file);
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tmp_file = NULL;
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} else {
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printf("nca section0 not created\n");
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}
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} else {
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printf("nca process failed\n");
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printf("nca initialize ctx failed\n");
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}
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consoleUpdate(NULL);
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@ -325,6 +363,7 @@ int main(int argc, char *argv[])
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}
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if (buf) free(buf);
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consoleExit(NULL);
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383
source/nca.c
383
source/nca.c
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@ -24,8 +24,12 @@
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#include "gamecard.h"
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#include "utils.h"
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#define NCA_CRYPTO_BUFFER_SIZE 0x800000 /* 8 MiB */
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/* Global variables. */
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static u8 *g_ncaCryptoBuffer = NULL;
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static const u8 g_nca0KeyAreaHash[SHA256_HASH_SIZE] = {
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0x9A, 0xBB, 0xD2, 0x11, 0x86, 0x00, 0x21, 0x9D, 0x7A, 0xDC, 0x5B, 0x43, 0x95, 0xF8, 0x4E, 0xFD,
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0xFF, 0x6B, 0x25, 0xEF, 0x9F, 0x96, 0x85, 0x28, 0x18, 0x9E, 0x76, 0xB0, 0x92, 0xF0, 0x6A, 0xCB
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@ -35,10 +39,31 @@ static const u8 g_nca0KeyAreaHash[SHA256_HASH_SIZE] = {
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static bool ncaCheckIfVersion0KeyAreaIsEncrypted(NcaContext *ctx);
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static inline u8 ncaGetKeyGenerationValue(NcaContext *ctx);
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static inline bool ncaCheckRightsIdAvailability(NcaContext *ctx);
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static void ncaInitializeAesCtrIv(u8 *out, const u8 *ctr, u64 offset);
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static void ncaUpdateAesCtrIv(u8 *ctr, u64 offset);
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static void ncaUpdateAesCtrExIv(u8 *ctr, u32 ctr_val, u64 offset);
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bool ncaAllocateCryptoBuffer(void)
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{
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if (g_ncaCryptoBuffer) return true;
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g_ncaCryptoBuffer = malloc(NCA_CRYPTO_BUFFER_SIZE);
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return (g_ncaCryptoBuffer != NULL);
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}
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void ncaFreeCryptoBuffer(void)
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{
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if (g_ncaCryptoBuffer)
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{
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free(g_ncaCryptoBuffer);
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g_ncaCryptoBuffer = NULL;
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}
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}
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size_t aes128XtsNintendoCrypt(Aes128XtsContext *ctx, void *dst, const void *src, size_t size, u64 sector, size_t sector_size, bool encrypt)
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{
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if (!ctx || !dst || !src || !size || !sector_size || (size % sector_size) != 0)
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@ -57,49 +82,13 @@ size_t aes128XtsNintendoCrypt(Aes128XtsContext *ctx, void *dst, const void *src,
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{
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/* We have to force a sector reset on each new sector to actually enable Nintendo AES-XTS cipher tweak */
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aes128XtsContextResetSector(ctx, cur_sector, true);
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if (encrypt)
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{
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crypt_res = aes128XtsEncrypt(ctx, dst_u8 + i, src_u8 + i, sector_size);
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} else {
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crypt_res = aes128XtsDecrypt(ctx, dst_u8 + i, src_u8 + i, sector_size);
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}
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crypt_res = (encrypt ? aes128XtsEncrypt(ctx, dst_u8 + i, src_u8 + i, sector_size) : aes128XtsDecrypt(ctx, dst_u8 + i, src_u8 + i, sector_size));
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if (crypt_res != sector_size) break;
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}
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return i;
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}
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bool ncaReadContent(NcaContext *ctx, void *out, u64 read_size, u64 offset)
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{
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if (!ctx || (ctx->storage_id != NcmStorageId_GameCard && !ctx->ncm_storage) || (ctx->storage_id == NcmStorageId_GameCard && !ctx->gamecard_offset) || !out || !read_size || \
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offset >= ctx->size || (offset + read_size) > ctx->size)
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{
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LOGFILE("Invalid parameters!");
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return false;
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}
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Result rc = 0;
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bool ret = false;
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if (ctx->storage_id != NcmStorageId_GameCard)
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{
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/* Retrieve NCA data normally */
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/* This strips NAX0 crypto from SD card NCAs (not used on eMMC NCAs) */
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rc = ncmContentStorageReadContentIdFile(ctx->ncm_storage, out, read_size, &(ctx->id), offset);
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ret = R_SUCCEEDED(rc);
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if (!ret) LOGFILE("Failed to read 0x%lX bytes block at offset 0x%lX from NCA \"%s\"! (0x%08X) (ncm)", read_size, offset, ctx->id_str, rc);
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} else {
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/* Retrieve NCA data using raw gamecard reads */
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/* Fixes NCA read issues with gamecards under HOS < 4.0.0 when using ncmContentStorageReadContentIdFile() */
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ret = gamecardRead(out, read_size, ctx->gamecard_offset + offset);
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if (!ret) LOGFILE("Failed to read 0x%lX bytes block at offset 0x%lX from NCA \"%s\"! (gamecard)", read_size, offset, ctx->id_str);
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}
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return ret;
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}
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bool ncaDecryptKeyArea(NcaContext *ctx)
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{
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if (!ctx)
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@ -184,7 +173,7 @@ bool ncaEncryptKeyArea(NcaContext *ctx)
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bool ncaDecryptHeader(NcaContext *ctx)
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{
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if (!ctx)
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if (!ctx || !strlen(ctx->content_id_str))
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{
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LOGFILE("Invalid NCA context!");
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return false;
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@ -194,32 +183,30 @@ bool ncaDecryptHeader(NcaContext *ctx)
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size_t crypt_res = 0;
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u64 fs_header_offset = 0;
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const u8 *header_key = NULL;
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u8 tmp_hdr[NCA_HEADER_LENGTH] = {0};
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Aes128XtsContext hdr_aes_ctx = {0}, nca0_fs_header_ctx = {0};
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header_key = keysGetNcaHeaderKey();
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aes128XtsContextCreate(&hdr_aes_ctx, header_key, header_key + 0x10, false);
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crypt_res = aes128XtsNintendoCrypt(&hdr_aes_ctx, tmp_hdr, &(ctx->header), NCA_HEADER_LENGTH, 0, NCA_AES_XTS_SECTOR_SIZE, false);
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crypt_res = aes128XtsNintendoCrypt(&hdr_aes_ctx, &(ctx->header), &(ctx->header), NCA_HEADER_LENGTH, 0, NCA_AES_XTS_SECTOR_SIZE, false);
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if (crypt_res != NCA_HEADER_LENGTH)
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{
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LOGFILE("Invalid output length for decrypted NCA header! (0x%X != 0x%lX)", NCA_HEADER_LENGTH, crypt_res);
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LOGFILE("Error decrypting partial NCA \"%s\" header!", ctx->content_id_str);
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return false;
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}
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memcpy(&magic, tmp_hdr + 0x200, sizeof(u32));
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magic = __builtin_bswap32(magic);
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magic = __builtin_bswap32(ctx->header.magic);
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switch(magic)
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{
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case NCA_NCA3_MAGIC:
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ctx->format_version = NcaVersion_Nca3;
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crypt_res = aes128XtsNintendoCrypt(&hdr_aes_ctx, &(ctx->header), &(ctx->header), NCA_FULL_HEADER_LENGTH, 0, NCA_AES_XTS_SECTOR_SIZE, false);
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if (crypt_res != NCA_FULL_HEADER_LENGTH)
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crypt_res = aes128XtsNintendoCrypt(&hdr_aes_ctx, ctx->header.fs_headers, ctx->header.fs_headers, NCA_FULL_HEADER_LENGTH - NCA_HEADER_LENGTH, 2, NCA_AES_XTS_SECTOR_SIZE, false);
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if (crypt_res != (NCA_FULL_HEADER_LENGTH - NCA_HEADER_LENGTH))
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{
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LOGFILE("Error decrypting full NCA3 header!");
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LOGFILE("Error decrypting NCA3 \"%s\" FS section headers!", ctx->content_id_str);
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return false;
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}
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@ -234,7 +221,7 @@ bool ncaDecryptHeader(NcaContext *ctx)
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crypt_res = aes128XtsNintendoCrypt(&hdr_aes_ctx, &(ctx->header.fs_headers[i]), &(ctx->header.fs_headers[i]), NCA_FS_HEADER_LENGTH, 0, NCA_AES_XTS_SECTOR_SIZE, false);
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if (crypt_res != NCA_FS_HEADER_LENGTH)
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{
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LOGFILE("Error decrypting NCA2 FS section header #%u!", i);
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LOGFILE("Error decrypting NCA2 \"%s\" FS section header #%u!", ctx->content_id_str, i);
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return false;
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}
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}
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@ -246,7 +233,7 @@ bool ncaDecryptHeader(NcaContext *ctx)
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/* We first need to decrypt the key area from the NCA0 header in order to access its FS section headers */
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if (!ncaDecryptKeyArea(ctx))
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{
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LOGFILE("Error decrypting NCA0 key area!");
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LOGFILE("Error decrypting NCA0 \"%s\" key area!", ctx->content_id_str);
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return false;
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}
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@ -260,22 +247,22 @@ bool ncaDecryptHeader(NcaContext *ctx)
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fs_header_offset = NCA_FS_ENTRY_BLOCK_OFFSET(ctx->header.fs_entries[i].start_block_offset);
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if (!ncaReadContent(ctx, &(ctx->header.fs_headers[i]), NCA_FS_HEADER_LENGTH, fs_header_offset))
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{
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LOGFILE("Failed to read NCA0 FS section header #%u at offset 0x%lX!", i, fs_header_offset);
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LOGFILE("Failed to read NCA0 \"%s\" FS section header #%u at offset 0x%lX!", ctx->content_id_str, i, fs_header_offset);
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return false;
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}
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crypt_res = aes128XtsNintendoCrypt(&nca0_fs_header_ctx, &(ctx->header.fs_headers[i]), &(ctx->header.fs_headers[i]), NCA_FS_HEADER_LENGTH, (fs_header_offset - 0x400) >> 9, \
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NCA_AES_XTS_SECTOR_SIZE, false);
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crypt_res = aes128XtsNintendoCrypt(&nca0_fs_header_ctx, &(ctx->header.fs_headers[i]), &(ctx->header.fs_headers[i]), NCA_FS_HEADER_LENGTH, \
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NCA_NCA0_FS_HEADER_AES_XTS_SECTOR(fs_header_offset), NCA_AES_XTS_SECTOR_SIZE, false);
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if (crypt_res != NCA_FS_HEADER_LENGTH)
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{
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LOGFILE("Error decrypting NCA0 FS section header #%u!", i);
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LOGFILE("Error decrypting NCA0 \"%s\" FS section header #%u!", ctx->content_id_str, i);
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return false;
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}
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}
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break;
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default:
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LOGFILE("Invalid NCA magic word! Wrong header key? (0x%08X)", magic);
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LOGFILE("Invalid NCA \"%s\" magic word! Wrong header key? (0x%08X)", ctx->content_id_str, magic);
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return false;
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}
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@ -284,7 +271,7 @@ bool ncaDecryptHeader(NcaContext *ctx)
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bool ncaEncryptHeader(NcaContext *ctx)
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{
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if (!ctx)
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if (!ctx || !strlen(ctx->content_id_str))
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{
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LOGFILE("Invalid NCA context!");
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return false;
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@ -300,25 +287,25 @@ bool ncaEncryptHeader(NcaContext *ctx)
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aes128XtsContextCreate(&hdr_aes_ctx, header_key, header_key + 0x10, true);
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crypt_res = aes128XtsNintendoCrypt(&hdr_aes_ctx, &(ctx->header), &(ctx->header), NCA_HEADER_LENGTH, 0, NCA_AES_XTS_SECTOR_SIZE, true);
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if (crypt_res != NCA_HEADER_LENGTH)
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{
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LOGFILE("Error encrypting partial NCA \"%s\" header!", ctx->content_id_str);
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return false;
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}
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switch(ctx->format_version)
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{
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case NcaVersion_Nca3:
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crypt_res = aes128XtsNintendoCrypt(&hdr_aes_ctx, &(ctx->header), &(ctx->header), NCA_FULL_HEADER_LENGTH, 0, NCA_AES_XTS_SECTOR_SIZE, true);
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crypt_res = aes128XtsNintendoCrypt(&hdr_aes_ctx, ctx->header.fs_headers, ctx->header.fs_headers, NCA_FULL_HEADER_LENGTH - NCA_HEADER_LENGTH, 2, NCA_AES_XTS_SECTOR_SIZE, true);
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if (crypt_res != NCA_FULL_HEADER_LENGTH)
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{
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LOGFILE("Error encrypting full NCA3 header!");
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LOGFILE("Error encrypting NCA3 \"%s\" FS section headers!", ctx->content_id_str);
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return false;
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}
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break;
|
||||
case NcaVersion_Nca2:
|
||||
crypt_res = aes128XtsNintendoCrypt(&hdr_aes_ctx, &(ctx->header), &(ctx->header), NCA_HEADER_LENGTH, 0, NCA_AES_XTS_SECTOR_SIZE, true);
|
||||
if (crypt_res != NCA_HEADER_LENGTH)
|
||||
{
|
||||
LOGFILE("Error encrypting partial NCA2 header!");
|
||||
return false;
|
||||
}
|
||||
|
||||
for(i = 0; i < NCA_FS_HEADER_COUNT; i++)
|
||||
{
|
||||
if (!ctx->header.fs_entries[i].enable_entry) continue;
|
||||
|
@ -326,20 +313,13 @@ bool ncaEncryptHeader(NcaContext *ctx)
|
|||
crypt_res = aes128XtsNintendoCrypt(&hdr_aes_ctx, &(ctx->header.fs_headers[i]), &(ctx->header.fs_headers[i]), NCA_FS_HEADER_LENGTH, 0, NCA_AES_XTS_SECTOR_SIZE, true);
|
||||
if (crypt_res != NCA_FS_HEADER_LENGTH)
|
||||
{
|
||||
LOGFILE("Error encrypting NCA2 FS section header #%u!", i);
|
||||
LOGFILE("Error encrypting NCA2 \"%s\" FS section header #%u!", ctx->content_id_str, i);
|
||||
return false;
|
||||
}
|
||||
}
|
||||
|
||||
break;
|
||||
case NcaVersion_Nca0:
|
||||
crypt_res = aes128XtsNintendoCrypt(&hdr_aes_ctx, &(ctx->header), &(ctx->header), NCA_HEADER_LENGTH, 0, NCA_AES_XTS_SECTOR_SIZE, true);
|
||||
if (crypt_res != NCA_HEADER_LENGTH)
|
||||
{
|
||||
LOGFILE("Error encrypting NCA0 header!");
|
||||
return false;
|
||||
}
|
||||
|
||||
/* NCA0 FS section headers will be encrypted in-place, but they need to be written to their proper offsets */
|
||||
aes128XtsContextCreate(&nca0_fs_header_ctx, ctx->decrypted_keys[0].key, ctx->decrypted_keys[1].key, true);
|
||||
|
||||
|
@ -349,28 +329,28 @@ bool ncaEncryptHeader(NcaContext *ctx)
|
|||
|
||||
fs_header_offset = NCA_FS_ENTRY_BLOCK_OFFSET(ctx->header.fs_entries[i].start_block_offset);
|
||||
|
||||
crypt_res = aes128XtsNintendoCrypt(&nca0_fs_header_ctx, &(ctx->header.fs_headers[i]), &(ctx->header.fs_headers[i]), NCA_FS_HEADER_LENGTH, (fs_header_offset - 0x400) >> 9, \
|
||||
NCA_AES_XTS_SECTOR_SIZE, true);
|
||||
crypt_res = aes128XtsNintendoCrypt(&nca0_fs_header_ctx, &(ctx->header.fs_headers[i]), &(ctx->header.fs_headers[i]), NCA_FS_HEADER_LENGTH, \
|
||||
NCA_NCA0_FS_HEADER_AES_XTS_SECTOR(fs_header_offset), NCA_AES_XTS_SECTOR_SIZE, true);
|
||||
if (crypt_res != NCA_FS_HEADER_LENGTH)
|
||||
{
|
||||
LOGFILE("Error decrypting NCA0 FS section header #%u!", i);
|
||||
LOGFILE("Error decrypting NCA0 \"%s\" FS section header #%u!", ctx->content_id_str, i);
|
||||
return false;
|
||||
}
|
||||
}
|
||||
|
||||
break;
|
||||
default:
|
||||
LOGFILE("Invalid NCA format version! (0x%02X)", ctx->format_version);
|
||||
LOGFILE("Invalid NCA \"%s\" format version! (0x%02X)", ctx->content_id_str, ctx->format_version);
|
||||
return false;
|
||||
}
|
||||
|
||||
return true;
|
||||
}
|
||||
|
||||
bool ncaProcessContent(NcaContext *out, Ticket *tik, u8 storage_id, NcmContentStorage *ncm_storage, const NcmContentId *id, const u8 *hash, u8 type, const u8 *size, u8 id_offset, u8 hfs_partition_type)
|
||||
bool ncaInitializeContext(NcaContext *out, Ticket *tik, u8 storage_id, NcmContentStorage *ncm_storage, u8 hfs_partition_type, const NcmPackagedContentInfo *content_info)
|
||||
{
|
||||
if (!out || !tik || (storage_id != NcmStorageId_GameCard && !ncm_storage) || !id || !hash || type > NcmContentType_DeltaFragment || !size || \
|
||||
(storage_id == NcmStorageId_GameCard && hfs_partition_type > GameCardHashFileSystemPartitionType_Secure))
|
||||
if (!out || !tik || (storage_id != NcmStorageId_GameCard && !ncm_storage) || (storage_id == NcmStorageId_GameCard && hfs_partition_type > GameCardHashFileSystemPartitionType_Secure) || \
|
||||
!content_info || content_info->info.content_type > NcmContentType_DeltaFragment)
|
||||
{
|
||||
LOGFILE("Invalid parameters!");
|
||||
return false;
|
||||
|
@ -380,15 +360,21 @@ bool ncaProcessContent(NcaContext *out, Ticket *tik, u8 storage_id, NcmContentSt
|
|||
out->storage_id = storage_id;
|
||||
out->ncm_storage = (out->storage_id != NcmStorageId_GameCard ? ncm_storage : NULL);
|
||||
|
||||
memcpy(&(out->id), id, sizeof(NcmContentId));
|
||||
utilsGenerateHexStringFromData(out->id_str, sizeof(out->id_str), out->id.c, sizeof(out->id.c));
|
||||
memcpy(&(out->content_id), &(content_info->info.content_id), sizeof(NcmContentId));
|
||||
utilsGenerateHexStringFromData(out->content_id_str, sizeof(out->content_id_str), out->content_id.c, sizeof(out->content_id.c));
|
||||
|
||||
memcpy(out->hash, hash, SHA256_HASH_SIZE);
|
||||
memcpy(out->hash, content_info->hash, SHA256_HASH_SIZE);
|
||||
utilsGenerateHexStringFromData(out->hash_str, sizeof(out->hash_str), out->hash, sizeof(out->hash));
|
||||
|
||||
out->type = type;
|
||||
ncaConvertNcmContentSizeToU64(size, &(out->size));
|
||||
out->id_offset = id_offset;
|
||||
out->content_type = content_info->info.content_type;
|
||||
out->id_offset = content_info->info.id_offset;
|
||||
|
||||
ncaConvertNcmContentSizeToU64(content_info->info.size, &(out->content_size));
|
||||
if (out->content_size < NCA_FULL_HEADER_LENGTH)
|
||||
{
|
||||
LOGFILE("Invalid size for NCA \"%s\"!", out->content_id_str);
|
||||
return false;
|
||||
}
|
||||
|
||||
out->rights_id_available = out->dirty_header = false;
|
||||
|
||||
|
@ -396,7 +382,7 @@ bool ncaProcessContent(NcaContext *out, Ticket *tik, u8 storage_id, NcmContentSt
|
|||
{
|
||||
/* Retrieve gamecard NCA offset */
|
||||
char nca_filename[0x30] = {0};
|
||||
sprintf(nca_filename, "%s.%s", out->id_str, out->type == NcmContentType_Meta ? "cnmt.nca" : "nca");
|
||||
sprintf(nca_filename, "%s.%s", out->content_id_str, out->content_type == NcmContentType_Meta ? "cnmt.nca" : "nca");
|
||||
|
||||
if (!gamecardGetOffsetAndSizeFromHashFileSystemPartitionEntryByName(hfs_partition_type, nca_filename, &(out->gamecard_offset), NULL))
|
||||
{
|
||||
|
@ -408,20 +394,20 @@ bool ncaProcessContent(NcaContext *out, Ticket *tik, u8 storage_id, NcmContentSt
|
|||
/* Read NCA header */
|
||||
if (!ncaReadContent(out, &(out->header), sizeof(NcaHeader), 0))
|
||||
{
|
||||
LOGFILE("Failed to read NCA \"%s\" header!", out->id_str);
|
||||
LOGFILE("Failed to read NCA \"%s\" header!", out->content_id_str);
|
||||
return false;
|
||||
}
|
||||
|
||||
/* Decrypt header */
|
||||
/* Decrypt NCA header */
|
||||
if (!ncaDecryptHeader(out))
|
||||
{
|
||||
LOGFILE("Failed to decrypt NCA \"%s\" header!", out->id_str);
|
||||
LOGFILE("Failed to decrypt NCA \"%s\" header!", out->content_id_str);
|
||||
return false;
|
||||
}
|
||||
|
||||
if (out->header.content_size != out->size)
|
||||
if (out->header.content_size != out->content_size)
|
||||
{
|
||||
LOGFILE("Content size mismatch for NCA \"%s\"! (0x%lX != 0x%lX)", out->header.content_size, out->size);
|
||||
LOGFILE("Content size mismatch for NCA \"%s\"! (0x%lX != 0x%lX)", out->content_id_str, out->header.content_size, out->content_size);
|
||||
return false;
|
||||
}
|
||||
|
||||
|
@ -435,7 +421,7 @@ bool ncaProcessContent(NcaContext *out, Ticket *tik, u8 storage_id, NcmContentSt
|
|||
/* This will return true if it has already been retrieved */
|
||||
if (!tikRetrieveTicketByRightsId(tik, &(out->header.rights_id), out->storage_id == NcmStorageId_GameCard))
|
||||
{
|
||||
LOGFILE("Error retrieving ticket for NCA \"%s\"!", out->id_str);
|
||||
LOGFILE("Error retrieving ticket for NCA \"%s\"!", out->content_id_str);
|
||||
return false;
|
||||
}
|
||||
|
||||
|
@ -458,12 +444,31 @@ bool ncaProcessContent(NcaContext *out, Ticket *tik, u8 storage_id, NcmContentSt
|
|||
/* Fill section context */
|
||||
out->fs_contexts[i].nca_ctx = out;
|
||||
out->fs_contexts[i].section_num = i;
|
||||
out->fs_contexts[i].offset = NCA_FS_ENTRY_BLOCK_OFFSET(out->header.fs_entries[i].start_block_offset);
|
||||
out->fs_contexts[i].size = (NCA_FS_ENTRY_BLOCK_OFFSET(out->header.fs_entries[i].end_block_offset) - out->fs_contexts[i].offset);
|
||||
out->fs_contexts[i].section_offset = NCA_FS_ENTRY_BLOCK_OFFSET(out->header.fs_entries[i].start_block_offset);
|
||||
out->fs_contexts[i].section_size = (NCA_FS_ENTRY_BLOCK_OFFSET(out->header.fs_entries[i].end_block_offset) - out->fs_contexts[i].section_offset);
|
||||
out->fs_contexts[i].section_type = NcaSectionType_Invalid; /* Placeholder */
|
||||
out->fs_contexts[i].encryption_type = (out->format_version == NcaVersion_Nca0 ? NcaEncryptionType_Nca0 : out->header.fs_headers[i].encryption_type);
|
||||
out->fs_contexts[i].header = &(out->header.fs_headers[i]);
|
||||
out->fs_contexts[i].use_xts = false;
|
||||
|
||||
/* Determine encryption type */
|
||||
out->fs_contexts[i].encryption_type = (out->format_version == NcaVersion_Nca0 ? NcaEncryptionType_Nca0 : out->header.fs_headers[i].encryption_type);
|
||||
if (out->fs_contexts[i].encryption_type == NcaEncryptionType_Auto)
|
||||
{
|
||||
switch(out->fs_contexts[i].section_num)
|
||||
{
|
||||
case 0: /* ExeFS PFS0 */
|
||||
case 1: /* RomFS */
|
||||
out->fs_contexts[i].encryption_type = NcaEncryptionType_AesCtr;
|
||||
break;
|
||||
case 2: /* Logo PFS0 */
|
||||
out->fs_contexts[i].encryption_type = NcaEncryptionType_None;
|
||||
break;
|
||||
default:
|
||||
break;
|
||||
}
|
||||
}
|
||||
|
||||
/* Check if we're dealing with an invalid encryption type value */
|
||||
if (out->fs_contexts[i].encryption_type == NcaEncryptionType_Auto || out->fs_contexts[i].encryption_type > NcaEncryptionType_Nca0) continue;
|
||||
|
||||
/* Determine FS section type */
|
||||
if (out->fs_contexts[i].header->fs_type == NcaFsType_PartitionFs && out->fs_contexts[i].header->hash_type == NcaHashType_HierarchicalSha256)
|
||||
|
@ -479,34 +484,162 @@ bool ncaProcessContent(NcaContext *out, Ticket *tik, u8 storage_id, NcmContentSt
|
|||
out->fs_contexts[i].section_type = NcaSectionType_Nca0RomFs;
|
||||
}
|
||||
|
||||
if (out->fs_contexts[i].section_type == NcaSectionType_Invalid || out->fs_contexts[i].encryption_type <= NcaEncryptionType_None) continue;
|
||||
/* Check if we're dealing with an invalid section type value */
|
||||
if (out->fs_contexts[i].section_type >= NcaSectionType_Invalid) continue;
|
||||
|
||||
/* Initialize section CTR */
|
||||
ncaInitializeAesCtrIv(out->fs_contexts[i].ctr, out->fs_contexts[i].header->section_ctr, out->fs_contexts[i].offset);
|
||||
|
||||
/* Initialize AES context */
|
||||
if (out->rights_id_available)
|
||||
/* Initialize crypto related fields */
|
||||
if (out->fs_contexts[i].encryption_type > NcaEncryptionType_None && out->fs_contexts[i].encryption_type <= NcaEncryptionType_Nca0)
|
||||
{
|
||||
/* AES-128-CTR */
|
||||
aes128CtrContextCreate(&(out->fs_contexts[i].ctr_ctx), out->titlekey, out->fs_contexts[i].ctr);
|
||||
} else {
|
||||
if (out->fs_contexts[i].encryption_type == NcaEncryptionType_AesCtr || out->fs_contexts[i].encryption_type == NcaEncryptionType_AesCtrEx)
|
||||
/* Initialize section CTR */
|
||||
ncaInitializeAesCtrIv(out->fs_contexts[i].ctr, out->fs_contexts[i].header->section_ctr, out->fs_contexts[i].section_offset);
|
||||
|
||||
/* Initialize AES context */
|
||||
if (out->rights_id_available)
|
||||
{
|
||||
/* AES-128-CTR */
|
||||
aes128CtrContextCreate(&(out->fs_contexts[i].ctr_ctx), out->decrypted_keys[2].key, out->fs_contexts[i].ctr);
|
||||
} else
|
||||
if (out->fs_contexts[i].encryption_type == NcaEncryptionType_AesXts || out->fs_contexts[i].encryption_type == NcaEncryptionType_Nca0)
|
||||
{
|
||||
/* AES-128-XTS */
|
||||
aes128XtsContextCreate(&(out->fs_contexts[i].xts_ctx), out->decrypted_keys[0].key, out->decrypted_keys[1].key, false);
|
||||
out->fs_contexts[i].use_xts = true;
|
||||
aes128CtrContextCreate(&(out->fs_contexts[i].ctr_ctx), out->titlekey, out->fs_contexts[i].ctr);
|
||||
} else {
|
||||
if (out->fs_contexts[i].encryption_type == NcaEncryptionType_AesCtr || out->fs_contexts[i].encryption_type == NcaEncryptionType_AesCtrEx)
|
||||
{
|
||||
aes128CtrContextCreate(&(out->fs_contexts[i].ctr_ctx), out->decrypted_keys[2].key, out->fs_contexts[i].ctr);
|
||||
} else
|
||||
if (out->fs_contexts[i].encryption_type == NcaEncryptionType_AesXts || out->fs_contexts[i].encryption_type == NcaEncryptionType_Nca0)
|
||||
{
|
||||
aes128XtsContextCreate(&(out->fs_contexts[i].xts_ctx), out->decrypted_keys[0].key, out->decrypted_keys[1].key, false);
|
||||
}
|
||||
}
|
||||
} else {
|
||||
memset(out->fs_contexts[i].ctr, 0, sizeof(out->fs_contexts[i].ctr));
|
||||
memset(&(out->fs_contexts[i].ctr_ctx), 0, sizeof(Aes128CtrContext));
|
||||
memset(&(out->fs_contexts[i].xts_ctx), 0, sizeof(Aes128XtsContext));
|
||||
}
|
||||
}
|
||||
|
||||
return true;
|
||||
}
|
||||
|
||||
bool ncaReadContent(NcaContext *ctx, void *out, u64 read_size, u64 offset)
|
||||
{
|
||||
if (!ctx || !strlen(ctx->content_id_str) || (ctx->storage_id != NcmStorageId_GameCard && !ctx->ncm_storage) || (ctx->storage_id == NcmStorageId_GameCard && !ctx->gamecard_offset) || !out || \
|
||||
!read_size || offset >= ctx->content_size || (offset + read_size) > ctx->content_size)
|
||||
{
|
||||
LOGFILE("Invalid parameters!");
|
||||
return false;
|
||||
}
|
||||
|
||||
Result rc = 0;
|
||||
bool ret = false;
|
||||
|
||||
if (ctx->storage_id != NcmStorageId_GameCard)
|
||||
{
|
||||
/* Retrieve NCA data normally */
|
||||
/* This strips NAX0 crypto from SD card NCAs (not used on eMMC NCAs) */
|
||||
rc = ncmContentStorageReadContentIdFile(ctx->ncm_storage, out, read_size, &(ctx->content_id), offset);
|
||||
ret = R_SUCCEEDED(rc);
|
||||
if (!ret) LOGFILE("Failed to read 0x%lX bytes block at offset 0x%lX from NCA \"%s\"! (0x%08X) (ncm)", read_size, offset, ctx->content_id_str, rc);
|
||||
} else {
|
||||
/* Retrieve NCA data using raw gamecard reads */
|
||||
/* Fixes NCA read issues with gamecards under HOS < 4.0.0 when using ncmContentStorageReadContentIdFile() */
|
||||
ret = gamecardRead(out, read_size, ctx->gamecard_offset + offset);
|
||||
if (!ret) LOGFILE("Failed to read 0x%lX bytes block at offset 0x%lX from NCA \"%s\"! (gamecard)", read_size, offset, ctx->content_id_str);
|
||||
}
|
||||
|
||||
return ret;
|
||||
}
|
||||
|
||||
bool ncaReadFsSection(NcaFsSectionContext *ctx, void *out, u64 read_size, u64 offset)
|
||||
{
|
||||
if (!g_ncaCryptoBuffer || !ctx || !ctx->nca_ctx || ctx->section_num >= NCA_FS_HEADER_COUNT || ctx->section_offset < NCA_FULL_HEADER_LENGTH || ctx->section_type >= NcaSectionType_Invalid || \
|
||||
ctx->encryption_type == NcaEncryptionType_Auto || ctx->encryption_type > NcaEncryptionType_Nca0 || !ctx->header || !out || !read_size || offset >= ctx->section_size || \
|
||||
(offset + read_size) > ctx->section_size)
|
||||
{
|
||||
LOGFILE("Invalid NCA FS section header parameters!");
|
||||
return false;
|
||||
}
|
||||
|
||||
NcaContext *nca_ctx = (NcaContext*)ctx->nca_ctx;
|
||||
u64 content_offset = (ctx->section_offset + offset);
|
||||
|
||||
if (!strlen(nca_ctx->content_id_str) || (nca_ctx->storage_id != NcmStorageId_GameCard && !nca_ctx->ncm_storage) || (nca_ctx->storage_id == NcmStorageId_GameCard && !nca_ctx->gamecard_offset) || \
|
||||
content_offset >= nca_ctx->content_size || (content_offset + read_size) > nca_ctx->content_size)
|
||||
{
|
||||
LOGFILE("Invalid NCA header parameters!");
|
||||
return false;
|
||||
}
|
||||
|
||||
/* Read data right away if we're dealing with a FS section with no crypto */
|
||||
if (ctx->encryption_type == NcaEncryptionType_None) return ncaReadContent(nca_ctx, out, read_size, content_offset);
|
||||
|
||||
/* Calculate offsets and block sizes */
|
||||
size_t crypt_res = 0;
|
||||
u64 block_start_offset = 0, block_end_offset = 0, block_size = 0;
|
||||
u64 chunk_size = 0, out_chunk_size = 0;
|
||||
u64 data_start_offset = 0, sector_num = 0;
|
||||
|
||||
switch(ctx->encryption_type)
|
||||
{
|
||||
case NcaEncryptionType_AesXts:
|
||||
case NcaEncryptionType_Nca0:
|
||||
block_start_offset = ROUND_DOWN(content_offset, NCA_AES_XTS_SECTOR_SIZE);
|
||||
block_end_offset = ROUND_UP(content_offset + read_size, NCA_AES_XTS_SECTOR_SIZE);
|
||||
sector_num = (ctx->encryption_type == NcaEncryptionType_AesXts ? offset : (content_offset - NCA_HEADER_LENGTH));
|
||||
sector_num /= NCA_AES_XTS_SECTOR_SIZE;
|
||||
break;
|
||||
case NcaEncryptionType_AesCtr:
|
||||
case NcaEncryptionType_AesCtrEx: /* This function is only supposed to be used on Patch RomFS sections when *not* reading BKTR subsections */
|
||||
block_start_offset = ROUND_DOWN(content_offset, AES_BLOCK_SIZE);
|
||||
block_end_offset = ROUND_UP(content_offset + read_size, AES_BLOCK_SIZE);
|
||||
ncaUpdateAesCtrIv(ctx->ctr, block_start_offset);
|
||||
break;
|
||||
default:
|
||||
break;
|
||||
}
|
||||
|
||||
block_size = (block_end_offset - block_start_offset);
|
||||
chunk_size = (block_size > NCA_CRYPTO_BUFFER_SIZE ? NCA_CRYPTO_BUFFER_SIZE : block_size);
|
||||
|
||||
data_start_offset = (content_offset - block_start_offset);
|
||||
out_chunk_size = (block_size > NCA_CRYPTO_BUFFER_SIZE ? (NCA_CRYPTO_BUFFER_SIZE - data_start_offset) : read_size);
|
||||
|
||||
/* Read data */
|
||||
if (!ncaReadContent(nca_ctx, g_ncaCryptoBuffer, chunk_size, block_start_offset))
|
||||
{
|
||||
LOGFILE("Failed to read 0x%lX bytes encrypted data block at offset 0x%lX from NCA \"%s\" FS section #%u!", chunk_size, block_start_offset, nca_ctx->content_id_str, ctx->section_num);
|
||||
return false;
|
||||
}
|
||||
|
||||
/* Decrypt data */
|
||||
switch(ctx->encryption_type)
|
||||
{
|
||||
case NcaEncryptionType_AesXts:
|
||||
case NcaEncryptionType_Nca0:
|
||||
crypt_res = aes128XtsNintendoCrypt(&(ctx->xts_ctx), g_ncaCryptoBuffer, g_ncaCryptoBuffer, chunk_size, sector_num, NCA_AES_XTS_SECTOR_SIZE, false);
|
||||
if (crypt_res != chunk_size)
|
||||
{
|
||||
LOGFILE("Failed to decrypt 0x%lX bytes data block at offset 0x%lX from NCA \"%s\" FS section #%u!", chunk_size, block_start_offset, nca_ctx->content_id_str, ctx->section_num);
|
||||
return false;
|
||||
}
|
||||
break;
|
||||
case NcaEncryptionType_AesCtr:
|
||||
case NcaEncryptionType_AesCtrEx: /* This function is only supposed to be used on Patch RomFS sections when *not* reading BKTR subsections */
|
||||
aes128CtrContextResetCtr(&(ctx->ctr_ctx), ctx->ctr);
|
||||
aes128CtrCrypt(&(ctx->ctr_ctx), g_ncaCryptoBuffer, g_ncaCryptoBuffer, chunk_size);
|
||||
break;
|
||||
default:
|
||||
break;
|
||||
}
|
||||
|
||||
/* Copy decrypted data */
|
||||
memcpy(out, g_ncaCryptoBuffer + data_start_offset, out_chunk_size);
|
||||
|
||||
if (block_size > NCA_CRYPTO_BUFFER_SIZE) return ncaReadFsSection(ctx, (u8*)out + out_chunk_size, read_size - out_chunk_size, offset + out_chunk_size);
|
||||
|
||||
return true;
|
||||
}
|
||||
|
||||
|
||||
|
||||
|
||||
|
||||
|
||||
|
||||
|
||||
|
@ -533,6 +666,30 @@ static bool ncaCheckIfVersion0KeyAreaIsEncrypted(NcaContext *ctx)
|
|||
return true;
|
||||
}
|
||||
|
||||
static inline u8 ncaGetKeyGenerationValue(NcaContext *ctx)
|
||||
{
|
||||
if (!ctx) return 0;
|
||||
return (ctx->header.key_generation > ctx->header.key_generation_old ? ctx->header.key_generation : ctx->header.key_generation_old);
|
||||
}
|
||||
|
||||
static inline bool ncaCheckRightsIdAvailability(NcaContext *ctx)
|
||||
{
|
||||
if (!ctx) return false;
|
||||
|
||||
bool rights_id_available = false;
|
||||
|
||||
for(u8 i = 0; i < 0x10; i++)
|
||||
{
|
||||
if (ctx->header.rights_id.c[i] != 0)
|
||||
{
|
||||
rights_id_available = true;
|
||||
break;
|
||||
}
|
||||
}
|
||||
|
||||
return rights_id_available;
|
||||
}
|
||||
|
||||
static void ncaInitializeAesCtrIv(u8 *out, const u8 *ctr, u64 offset)
|
||||
{
|
||||
if (!out || !ctr) return;
|
||||
|
|
163
source/nca.h
163
source/nca.h
|
@ -22,25 +22,26 @@
|
|||
#include <switch.h>
|
||||
#include "tik.h"
|
||||
|
||||
#define NCA_HEADER_LENGTH 0x400
|
||||
#define NCA_FS_HEADER_LENGTH 0x200
|
||||
#define NCA_FS_HEADER_COUNT 4
|
||||
#define NCA_FULL_HEADER_LENGTH (NCA_HEADER_LENGTH + (NCA_FS_HEADER_LENGTH * NCA_FS_HEADER_COUNT))
|
||||
#define NCA_HEADER_LENGTH 0x400
|
||||
#define NCA_FS_HEADER_LENGTH 0x200
|
||||
#define NCA_FS_HEADER_COUNT 4
|
||||
#define NCA_FULL_HEADER_LENGTH (NCA_HEADER_LENGTH + (NCA_FS_HEADER_LENGTH * NCA_FS_HEADER_COUNT))
|
||||
|
||||
#define NCA_NCA0_MAGIC 0x4E434130 /* "NCA0" */
|
||||
#define NCA_NCA2_MAGIC 0x4E434132 /* "NCA2" */
|
||||
#define NCA_NCA3_MAGIC 0x4E434133 /* "NCA3" */
|
||||
#define NCA_NCA0_MAGIC 0x4E434130 /* "NCA0" */
|
||||
#define NCA_NCA2_MAGIC 0x4E434132 /* "NCA2" */
|
||||
#define NCA_NCA3_MAGIC 0x4E434133 /* "NCA3" */
|
||||
|
||||
#define NCA_IVFC_MAGIC 0x49564643 /* "IVFC" */
|
||||
#define NCA_IVFC_MAGIC 0x49564643 /* "IVFC" */
|
||||
|
||||
#define NCA_BKTR_MAGIC 0x424B5452 /* "BKTR" */
|
||||
#define NCA_BKTR_MAGIC 0x424B5452 /* "BKTR" */
|
||||
|
||||
#define NCA_FS_ENTRY_BLOCK_SIZE 0x200
|
||||
#define NCA_FS_ENTRY_BLOCK_OFFSET(x) ((u64)(x) * NCA_FS_ENTRY_BLOCK_SIZE)
|
||||
#define NCA_FS_ENTRY_BLOCK_SIZE 0x200
|
||||
#define NCA_FS_ENTRY_BLOCK_OFFSET(x) ((u64)(x) * NCA_FS_ENTRY_BLOCK_SIZE)
|
||||
|
||||
#define NCA_AES_XTS_SECTOR_SIZE 0x200
|
||||
#define NCA_AES_XTS_SECTOR_SIZE 0x200
|
||||
#define NCA_NCA0_FS_HEADER_AES_XTS_SECTOR(x) (((x) - NCA_HEADER_LENGTH) >> 9)
|
||||
|
||||
#define NCA_IVFC_BLOCK_SIZE(x) (1 << (x))
|
||||
#define NCA_IVFC_BLOCK_SIZE(x) (1 << (x))
|
||||
|
||||
typedef enum {
|
||||
NcaDistributionType_Download = 0,
|
||||
|
@ -114,7 +115,7 @@ typedef enum {
|
|||
NcaEncryptionType_AesXts = 2,
|
||||
NcaEncryptionType_AesCtr = 3,
|
||||
NcaEncryptionType_AesCtrEx = 4,
|
||||
NcaEncryptionType_Nca0 = 5 ///< Only used to represent NCA0 FS section crypto - not actually used as a possible value for this field.
|
||||
NcaEncryptionType_Nca0 = 5 ///< Only used to represent NCA0 AES XTS FS section crypto - not actually used as a possible value for this field.
|
||||
} NcaEncryptionType;
|
||||
|
||||
typedef struct {
|
||||
|
@ -134,7 +135,7 @@ typedef struct {
|
|||
typedef struct {
|
||||
u64 offset;
|
||||
u64 size;
|
||||
u32 block_size; ///< Use NCA_IVFC_CALC_BLOCK_SIZE to calculate the actual block size using this value.
|
||||
u32 block_size; ///< Use NCA_IVFC_BLOCK_SIZE to calculate the actual block size using this value.
|
||||
u8 reserved[0x4];
|
||||
} NcaHierarchicalIntegrityLayerInfo;
|
||||
|
||||
|
@ -254,111 +255,60 @@ typedef enum {
|
|||
typedef struct {
|
||||
void *nca_ctx; ///< NcaContext. Used to perform NCA reads.
|
||||
u8 section_num;
|
||||
u64 offset;
|
||||
u64 size;
|
||||
u64 section_offset;
|
||||
u64 section_size;
|
||||
u8 section_type; ///< NcaSectionType.
|
||||
u8 encryption_type; ///< NcaEncryptionType.
|
||||
NcaFsHeader *header;
|
||||
bool use_xts;
|
||||
u8 ctr[0x10]; ///< Used to update the AES CTR context IV based on the desired offset.
|
||||
Aes128CtrContext ctr_ctx;
|
||||
Aes128XtsContext xts_ctx;
|
||||
u8 ctr[0x10]; ///< Used to update the AES context IV based on the desired offset.
|
||||
} NcaFsContext;
|
||||
} NcaFsSectionContext;
|
||||
|
||||
typedef struct {
|
||||
u8 storage_id; ///< NcmStorageId.
|
||||
NcmContentStorage *ncm_storage; ///< Pointer to a NcmContentStorage instance. Used to read NCA data.
|
||||
u64 gamecard_offset; ///< Used to read NCA data from a gamecard using a FsStorage instance when storage_id == NcmStorageId_GameCard.
|
||||
NcmContentId id; ///< Also used to read NCA data.
|
||||
char id_str[0x21];
|
||||
u8 hash[0x20];
|
||||
NcmContentId content_id; ///< Also used to read NCA data.
|
||||
char content_id_str[0x21];
|
||||
u8 hash[0x20]; ///< Retrieved from NcmPackagedContentInfo.
|
||||
char hash_str[0x41];
|
||||
u8 format_version; ///< NcaVersion.
|
||||
u8 type; ///< NcmContentType. Retrieved from NcmContentInfo.
|
||||
u64 size; ///< Retrieved from NcmContentInfo.
|
||||
u8 content_type; ///< NcmContentType. Retrieved from NcmPackagedContentInfo.
|
||||
u64 content_size; ///< Retrieved from NcmPackagedContentInfo.
|
||||
u8 key_generation; ///< NcaKeyGenerationOld / NcaKeyGeneration. Retrieved from the decrypted header.
|
||||
u8 id_offset; ///< Retrieved from NcmContentInfo.
|
||||
u8 id_offset; ///< Retrieved from NcmPackagedContentInfo.
|
||||
bool rights_id_available;
|
||||
u8 titlekey[0x10];
|
||||
bool dirty_header;
|
||||
NcaHeader header;
|
||||
NcaFsContext fs_contexts[4];
|
||||
NcaFsSectionContext fs_contexts[4];
|
||||
NcaKey decrypted_keys[4];
|
||||
u8 titlekey[0x10];
|
||||
} NcaContext;
|
||||
|
||||
/// Reads raw encrypted data from a NCA using an input NCA context.
|
||||
/// 'storage_id', 'id', 'id_str' and 'size' elements must have been filled beforehand (e.g. using ncaProcessContent()).
|
||||
/// If 'storage_id' != NcmStorageId_GameCard, the 'ncm_storage' element should point to a valid NcmContentStorage instance.
|
||||
/// If 'storage_id' == NcmStorageId_GameCard, the 'gamecard_offset' element should hold a value greater than zero.
|
||||
/// Functions to control the internal heap buffer used by NCA FS section crypto code.
|
||||
/// Must be called at startup.
|
||||
bool ncaAllocateCryptoBuffer(void);
|
||||
void ncaFreeCryptoBuffer(void);
|
||||
|
||||
/// Initializes a valid NCA context.
|
||||
/// If the NCA holds a populated Rights ID field, and if the Ticket object pointed to by 'tik' hasn't been filled, ticket data will be retrieved.
|
||||
/// If 'storage_id' != NcmStorageId_GameCard, the 'ncm_storage' argument must point to a valid NcmContentStorage instance, previously opened using the same NcmStorageId value.
|
||||
/// If 'storage_id' == NcmStorageId_GameCard, the 'hfs_partition_type' argument must be a valid GameCardHashFileSystemPartitionType value.
|
||||
bool ncaInitializeContext(NcaContext *out, Ticket *tik, u8 storage_id, NcmContentStorage *ncm_storage, u8 hfs_partition_type, const NcmPackagedContentInfo *content_info);
|
||||
|
||||
/// Reads raw encrypted data from a NCA using an input NCA context, previously initialized by ncaInitializeContext().
|
||||
bool ncaReadContent(NcaContext *ctx, void *out, u64 read_size, u64 offset);
|
||||
|
||||
/// Generates a valid NCA context.
|
||||
/// 'hash', 'type', 'size' and 'id_offset' elements can be retrieved from a NcmContentInfo object.
|
||||
/// If the NCA holds a populated Rights ID field, and if the Ticket object pointed to by 'tik' hasn't been filled, the ticket and titlekey will be retrieved.
|
||||
/// 'hfs_partition_type' is only necessary if 'storage_id' == NcmStorageId_GameCard.
|
||||
bool ncaProcessContent(NcaContext *out, Ticket *tik, u8 storage_id, NcmContentStorage *ncm_storage, const NcmContentId *id, const u8 *hash, u8 type, const u8 *size, u8 id_offset, u8 hfs_partition_type);
|
||||
/// Reads decrypted data from a NCA FS section using an input NCA FS section context.
|
||||
/// Input offset must be relative to the start of the NCA FS section.
|
||||
bool ncaReadFsSection(NcaFsSectionContext *ctx, void *out, u64 read_size, u64 offset);
|
||||
|
||||
|
||||
|
||||
|
||||
|
||||
|
||||
static inline void ncaConvertNcmContentSizeToU64(const u8 *size, u64 *out)
|
||||
{
|
||||
if (!size || !out) return;
|
||||
*out = 0;
|
||||
memcpy(out, size, 6);
|
||||
}
|
||||
|
||||
static inline void ncaConvertU64ToNcmContentSize(const u64 *size, u8 *out)
|
||||
{
|
||||
if (!size || !out) return;
|
||||
memcpy(out, size, 6);
|
||||
}
|
||||
|
||||
|
||||
|
||||
static inline u8 ncaGetKeyGenerationValue(NcaContext *ctx)
|
||||
{
|
||||
if (!ctx) return 0;
|
||||
return (ctx->header.key_generation > ctx->header.key_generation_old ? ctx->header.key_generation : ctx->header.key_generation_old);
|
||||
}
|
||||
|
||||
static inline void ncaSetDownloadDistributionType(NcaContext *ctx)
|
||||
{
|
||||
if (!ctx || ctx->header.distribution_type == NcaDistributionType_Download) return;
|
||||
ctx->header.distribution_type = NcaDistributionType_Download;
|
||||
ctx->dirty_header = true;
|
||||
}
|
||||
|
||||
static inline bool ncaCheckRightsIdAvailability(NcaContext *ctx)
|
||||
{
|
||||
if (!ctx) return false;
|
||||
|
||||
bool rights_id_available = false;
|
||||
|
||||
for(u8 i = 0; i < 0x10; i++)
|
||||
{
|
||||
if (ctx->header.rights_id.c[i] != 0)
|
||||
{
|
||||
rights_id_available = true;
|
||||
break;
|
||||
}
|
||||
}
|
||||
|
||||
return rights_id_available;
|
||||
}
|
||||
|
||||
static inline void ncaWipeRightsId(NcaContext *ctx)
|
||||
{
|
||||
if (!ctx) return;
|
||||
memset(&(ctx->header.rights_id), 0, sizeof(FsRightsId));
|
||||
ctx->dirty_header = true;
|
||||
}
|
||||
|
||||
|
||||
|
||||
|
||||
bool ncaDecryptKeyArea(NcaContext *nca_ctx);
|
||||
bool ncaEncryptKeyArea(NcaContext *nca_ctx);
|
||||
|
||||
|
@ -369,6 +319,33 @@ bool ncaEncryptHeader(NcaContext *ctx);
|
|||
|
||||
|
||||
|
||||
/// Miscellanous functions.
|
||||
|
||||
static inline void ncaConvertNcmContentSizeToU64(const u8 *size, u64 *out)
|
||||
{
|
||||
if (!size || !out) return;
|
||||
*out = 0;
|
||||
memcpy(out, size, 6);
|
||||
}
|
||||
|
||||
static inline void ncaConvertU64ToNcmContentSize(const u64 *size, u8 *out)
|
||||
{
|
||||
if (!size || !out) return;
|
||||
memcpy(out, size, 6);
|
||||
}
|
||||
|
||||
static inline void ncaSetDownloadDistributionType(NcaContext *ctx)
|
||||
{
|
||||
if (!ctx || ctx->header.distribution_type == NcaDistributionType_Download) return;
|
||||
ctx->header.distribution_type = NcaDistributionType_Download;
|
||||
ctx->dirty_header = true;
|
||||
}
|
||||
|
||||
static inline void ncaWipeRightsId(NcaContext *ctx)
|
||||
{
|
||||
if (!ctx) return;
|
||||
memset(&(ctx->header.rights_id), 0, sizeof(FsRightsId));
|
||||
ctx->dirty_header = true;
|
||||
}
|
||||
|
||||
#endif /* __NCA_H__ */
|
||||
|
|
|
@ -27,6 +27,7 @@
|
|||
#include "gamecard.h"
|
||||
#include "services.h"
|
||||
#include "utils.h"
|
||||
#include "nca.h"
|
||||
#include "fatfs/ff.h"
|
||||
|
||||
/* Global variables. */
|
||||
|
@ -119,6 +120,8 @@ void utilsOverclockSystem(bool restore)
|
|||
|
||||
bool utilsInitializeResources(void)
|
||||
{
|
||||
Result rc = 0;
|
||||
|
||||
/* Initialize needed services */
|
||||
if (!servicesInitialize())
|
||||
{
|
||||
|
@ -133,8 +136,15 @@ bool utilsInitializeResources(void)
|
|||
return false;
|
||||
}
|
||||
|
||||
/* Allocate NCA crypto buffer */
|
||||
if (!ncaAllocateCryptoBuffer())
|
||||
{
|
||||
LOGFILE("Unable to allocate memory for NCA crypto buffer!");
|
||||
return false;
|
||||
}
|
||||
|
||||
/* Initialize gamecard interface */
|
||||
Result rc = gamecardInitialize();
|
||||
rc = gamecardInitialize();
|
||||
if (R_FAILED(rc))
|
||||
{
|
||||
LOGFILE("Failed to initialize gamecard interface!");
|
||||
|
@ -182,6 +192,9 @@ void utilsCloseResources(void)
|
|||
/* Deinitialize gamecard interface */
|
||||
gamecardExit();
|
||||
|
||||
/* Free NCA crypto buffer */
|
||||
ncaFreeCryptoBuffer();
|
||||
|
||||
/* Close initialized services */
|
||||
servicesClose();
|
||||
}
|
||||
|
|
|
@ -29,7 +29,8 @@
|
|||
|
||||
#define MAX_ELEMENTS(x) ((sizeof((x))) / (sizeof((x)[0])))
|
||||
|
||||
#define ROUND_UP(x, y) ((x) + (((y) - ((x) % (y))) % (y))) /* Aligns 'x' bytes to a 'y' bytes boundary. */
|
||||
#define ROUND_DOWN(x, y) ((x) & ~((y) - 1))
|
||||
#define ROUND_UP(x, y) ((x) + (((y) - ((x) % (y))) % (y)))
|
||||
|
||||
#define BIS_SYSTEM_PARTITION_MOUNT_NAME "sys:"
|
||||
|
||||
|
|
Loading…
Reference in a new issue