mirrors/nxdumptool
1
0
Fork 0
mirror of https://github.com/DarkMatterCore/nxdumptool.git synced 2024-11-23 02:36:41 +00:00
Code Issues Releases Activity

Fix parent layer chunk size calculation while generating HierarchicalSha256 / HierarchicalIntegrity patches.

Browse source
This commit is contained in:
Pablo Curiel 2020-10-29 03:51:17 -04:00
parent 0229124173
commit bceff64da4
1 changed files with 4 additions and 5 deletions
Show stats Download patch file Download diff file Expand all files Collapse all files

9
source/nca.c
View file

@ -956,7 +956,7 @@ static bool ncaGenerateHashDataPatch(NcaFsSectionContext *ctx, const void *data,
u64 cur_layer_read_start_offset = 0, cur_layer_read_end_offset = 0, cur_layer_read_size = 0, cur_layer_read_patch_offset = 0; u64 cur_layer_read_start_offset = 0, cur_layer_read_end_offset = 0, cur_layer_read_size = 0, cur_layer_read_patch_offset = 0;
u64 parent_layer_offset = 0, parent_layer_size = 0; u64 parent_layer_offset = 0, parent_layer_size = 0;
u64 parent_layer_read_start_offset = 0, parent_layer_read_end_offset = 0, parent_layer_read_size = 0; u64 parent_layer_read_start_offset = 0, parent_layer_read_size = 0;
NcaHashDataPatch *cur_layer_patch = NULL; NcaHashDataPatch *cur_layer_patch = NULL;
@ -996,13 +996,12 @@ static bool ncaGenerateHashDataPatch(NcaFsSectionContext *ctx, const void *data,
if (i > 1) if (i > 1)
{ {
/* HierarchicalSha256 hash region with index 1 through 4, or HierarchicalIntegrity verification level with index 1 through 5. */ /* HierarchicalSha256 hash region with index 1 through 4, or HierarchicalIntegrity verification level with index 1 through 5. */
parent_layer_read_start_offset = ((cur_data_offset / hash_block_size) * SHA256_HASH_SIZE);
parent_layer_read_end_offset = (((cur_data_offset + cur_data_size) / hash_block_size) * SHA256_HASH_SIZE);
parent_layer_read_size = (parent_layer_read_end_offset != parent_layer_read_start_offset ? (parent_layer_read_end_offset - parent_layer_read_start_offset) : SHA256_HASH_SIZE);
cur_layer_read_start_offset = (cur_layer_offset + ALIGN_DOWN(cur_data_offset, hash_block_size)); cur_layer_read_start_offset = (cur_layer_offset + ALIGN_DOWN(cur_data_offset, hash_block_size));
cur_layer_read_end_offset = (cur_layer_offset + ALIGN_UP(cur_data_offset + cur_data_size, hash_block_size)); cur_layer_read_end_offset = (cur_layer_offset + ALIGN_UP(cur_data_offset + cur_data_size, hash_block_size));
cur_layer_read_size = (cur_layer_read_end_offset - cur_layer_read_start_offset); cur_layer_read_size = (cur_layer_read_end_offset - cur_layer_read_start_offset);
parent_layer_read_start_offset = ((cur_data_offset / hash_block_size) * SHA256_HASH_SIZE);
parent_layer_read_size = ((cur_layer_read_size / hash_block_size) * SHA256_HASH_SIZE);
} else { } else {
/* HierarchicalSha256 master hash region, or HierarchicalIntegrity master verification level. Both with index 0. */ /* HierarchicalSha256 master hash region, or HierarchicalIntegrity master verification level. Both with index 0. */
/* The master hash is calculated over the whole layer and saved to the HashData block from the NCA FS section header. */ /* The master hash is calculated over the whole layer and saved to the HashData block from the NCA FS section header. */