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Code Issues Releases Activity

Fix NCA context initialization for NCAs that hold a single sparse FS section.

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This commit is contained in:
Pablo Curiel 2022-06-24 03:38:58 +02:00
parent 37b63aee60
commit bd2bf2c8f4
2 changed files with 15 additions and 10 deletions
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12
include/core/nca.h
View file

@ -169,8 +169,8 @@ typedef enum {
NcaHashType_HierarchicalSha256 = 2, ///< Used by NcaFsType_PartitionFs.
NcaHashType_HierarchicalIntegrity = 3, ///< Used by NcaFsType_RomFs.
NcaHashType_AutoSha3 = 4,
NcaHashType_HierarchicalSha3256 = 5,
NcaHashType_HierarchicalIntegritySha3 = 6
NcaHashType_HierarchicalSha3256 = 5, ///< Used by NcaFsType_PartitionFs.
NcaHashType_HierarchicalIntegritySha3 = 6 ///< Used by NcaFsType_RomFs.
} NcaHashType;
typedef enum {
@ -336,10 +336,10 @@ typedef struct {
NXDT_ASSERT(NcaFsHeader, 0x200);
typedef enum {
NcaFsSectionType_PartitionFs = 0, ///< NcaFsType_PartitionFs + NcaHashType_HierarchicalSha256.
NcaFsSectionType_RomFs = 1, ///< NcaFsType_RomFs + NcaHashType_HierarchicalIntegrity.
NcaFsSectionType_PatchRomFs = 2, ///< NcaFsType_RomFs + NcaHashType_HierarchicalIntegrity + NcaEncryptionType_AesCtrEx.
NcaFsSectionType_Nca0RomFs = 3, ///< NcaFsType_RomFs + NcaHashType_HierarchicalSha256 + NcaVersion_Nca0.
NcaFsSectionType_PartitionFs = 0, ///< NcaFsType_PartitionFs + NcaHashType_HierarchicalSha256 OR NcaHashType_HierarchicalSha3256 + NcaEncryptionType_AesCtr OR NcaEncryptionType_AesCtrSkipLayerHash.
NcaFsSectionType_RomFs = 1, ///< NcaFsType_RomFs + NcaHashType_HierarchicalIntegrity OR NcaHashType_HierarchicalIntegritySha3 + NcaEncryptionType_AesCtr OR NcaEncryptionType_AesCtrSkipLayerHash.
NcaFsSectionType_PatchRomFs = 2, ///< NcaFsType_RomFs + NcaHashType_HierarchicalIntegrity OR NcaHashType_HierarchicalIntegritySha3 + NcaEncryptionType_AesCtrEx OR NcaEncryptionType_AesCtrExSkipLayerHash.
NcaFsSectionType_Nca0RomFs = 3, ///< NcaVersion_Nca0 + NcaFsType_RomFs + NcaHashType_HierarchicalSha256 + NcaEncryptionType_AesXts.
NcaFsSectionType_Invalid = 4
} NcaFsSectionType;

13
source/core/nca.c
View file

@ -201,14 +201,12 @@ bool ncaInitializeContext(NcaContext *out, u8 storage_id, u8 hfs_partition_type,
switch(fs_ctx->section_num)
{
case 0: /* ExeFS Partition FS. */
case 2: /* Logo Partition FS. */
fs_ctx->hash_type = (fs_ctx->hash_type == NcaHashType_Auto ? NcaHashType_HierarchicalSha256 : NcaHashType_HierarchicalSha3256);
break;
case 1: /* RomFS. */
fs_ctx->hash_type = (fs_ctx->hash_type == NcaHashType_Auto ? NcaHashType_HierarchicalIntegrity : NcaHashType_HierarchicalIntegritySha3);
break;
case 2: /* Logo Partition FS. */
fs_ctx->hash_type = NcaHashType_None;
break;
default:
break;
}
@ -261,7 +259,14 @@ bool ncaInitializeContext(NcaContext *out, u8 storage_id, u8 hfs_partition_type,
u64 raw_storage_size = (sparse_bucket->offset + sparse_bucket->size);
if (__builtin_bswap32(sparse_bucket->header.magic) != NCA_BKTR_MAGIC || sparse_bucket->header.version != NCA_BKTR_VERSION || raw_storage_offset < sizeof(NcaHeader) || \
!raw_storage_size || ((raw_storage_offset + raw_storage_size) > out->content_size) || !sparse_bucket->header.entry_count) continue;
((raw_storage_offset + raw_storage_size) > out->content_size)) continue;
if (!raw_storage_size || !sparse_bucket->header.entry_count)
{
/* Increase valid FS section count but don't set this FS section as enabled, since we can't use it. */
valid_fs_section_cnt++;
continue;
}
/* Set sparse table properties. */
fs_ctx->sparse_table_offset = (sparse_info->physical_offset + sparse_bucket->offset);