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path: root/src/liblzma/common/index_hash.c
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Diffstat (limited to 'src/liblzma/common/index_hash.c')
-rw-r--r--src/liblzma/common/index_hash.c68
1 files changed, 34 insertions, 34 deletions
diff --git a/src/liblzma/common/index_hash.c b/src/liblzma/common/index_hash.c
index 5e581838..162094d1 100644
--- a/src/liblzma/common/index_hash.c
+++ b/src/liblzma/common/index_hash.c
@@ -23,8 +23,8 @@
typedef struct {
- /// Sum of the Total Size fields
- lzma_vli total_size;
+ /// Sum of the Block sizes (including Block Padding)
+ lzma_vli blocks_size;
/// Sum of the Uncompressed Size fields
lzma_vli uncompressed_size;
@@ -35,7 +35,7 @@ typedef struct {
/// Size of the List of Index Records as bytes
lzma_vli index_list_size;
- /// Check calculated from Total Sizes and Uncompressed Sizes.
+ /// Check calculated from Unpadded Sizes and Uncompressed Sizes.
lzma_check_state check;
} lzma_index_hash_info;
@@ -45,7 +45,7 @@ struct lzma_index_hash_s {
enum {
SEQ_BLOCK,
SEQ_COUNT,
- SEQ_TOTAL,
+ SEQ_UNPADDED,
SEQ_UNCOMPRESSED,
SEQ_PADDING_INIT,
SEQ_PADDING,
@@ -61,8 +61,8 @@ struct lzma_index_hash_s {
/// Number of Records not fully decoded
lzma_vli remaining;
- /// Total Size currently being read from an Index Record.
- lzma_vli total_size;
+ /// Unpadded Size currently being read from an Index Record.
+ lzma_vli unpadded_size;
/// Uncompressed Size currently being read from an Index Record.
lzma_vli uncompressed_size;
@@ -86,15 +86,15 @@ lzma_index_hash_init(lzma_index_hash *index_hash, lzma_allocator *allocator)
}
index_hash->sequence = SEQ_BLOCK;
- index_hash->blocks.total_size = 0;
+ index_hash->blocks.blocks_size = 0;
index_hash->blocks.uncompressed_size = 0;
index_hash->blocks.count = 0;
index_hash->blocks.index_list_size = 0;
- index_hash->records.total_size = 0;
+ index_hash->records.blocks_size = 0;
index_hash->records.uncompressed_size = 0;
index_hash->records.count = 0;
index_hash->records.index_list_size = 0;
- index_hash->total_size = 0;
+ index_hash->unpadded_size = 0;
index_hash->uncompressed_size = 0;
index_hash->pos = 0;
index_hash->crc32 = 0;
@@ -128,16 +128,16 @@ lzma_index_hash_size(const lzma_index_hash *index_hash)
/// Updates the sizes and the hash without any validation.
static lzma_ret
-hash_append(lzma_index_hash_info *info, lzma_vli total_size,
+hash_append(lzma_index_hash_info *info, lzma_vli unpadded_size,
lzma_vli uncompressed_size)
{
- info->total_size += total_size;
+ info->blocks_size += vli_ceil4(unpadded_size);
info->uncompressed_size += uncompressed_size;
- info->index_list_size += lzma_vli_size(total_size_encode(total_size))
+ info->index_list_size += lzma_vli_size(unpadded_size)
+ lzma_vli_size(uncompressed_size);
++info->count;
- const lzma_vli sizes[2] = { total_size, uncompressed_size };
+ const lzma_vli sizes[2] = { unpadded_size, uncompressed_size };
lzma_check_update(&info->check, LZMA_CHECK_BEST,
(const uint8_t *)(sizes), sizeof(sizes));
@@ -146,26 +146,27 @@ hash_append(lzma_index_hash_info *info, lzma_vli total_size,
extern LZMA_API lzma_ret
-lzma_index_hash_append(lzma_index_hash *index_hash, lzma_vli total_size,
+lzma_index_hash_append(lzma_index_hash *index_hash, lzma_vli unpadded_size,
lzma_vli uncompressed_size)
{
// Validate the arguments.
- if (index_hash->sequence != SEQ_BLOCK || total_size == 0
- || total_size > LZMA_VLI_MAX || (total_size & 3)
+ if (index_hash->sequence != SEQ_BLOCK
+ || unpadded_size < UNPADDED_SIZE_MIN
+ || unpadded_size > UNPADDED_SIZE_MAX
|| uncompressed_size > LZMA_VLI_MAX)
return LZMA_PROG_ERROR;
// Update the hash.
return_if_error(hash_append(&index_hash->blocks,
- total_size, uncompressed_size));
+ unpadded_size, uncompressed_size));
// Validate the properties of *info are still in allowed limits.
- if (index_hash->blocks.total_size > LZMA_VLI_MAX
+ if (index_hash->blocks.blocks_size > LZMA_VLI_MAX
|| index_hash->blocks.uncompressed_size > LZMA_VLI_MAX
|| index_size(index_hash->blocks.count,
index_hash->blocks.index_list_size)
> LZMA_BACKWARD_SIZE_MAX
- || index_stream_size(index_hash->blocks.total_size,
+ || index_stream_size(index_hash->blocks.blocks_size,
index_hash->blocks.count,
index_hash->blocks.index_list_size)
> LZMA_VLI_MAX)
@@ -216,14 +217,14 @@ lzma_index_hash_decode(lzma_index_hash *index_hash, const uint8_t *in,
// Handle the special case when there are no Blocks.
index_hash->sequence = index_hash->remaining == 0
- ? SEQ_PADDING_INIT : SEQ_TOTAL;
+ ? SEQ_PADDING_INIT : SEQ_UNPADDED;
break;
}
- case SEQ_TOTAL:
+ case SEQ_UNPADDED:
case SEQ_UNCOMPRESSED: {
- lzma_vli *size = index_hash->sequence == SEQ_TOTAL
- ? &index_hash->total_size
+ lzma_vli *size = index_hash->sequence == SEQ_UNPADDED
+ ? &index_hash->unpadded_size
: &index_hash->uncompressed_size;
ret = lzma_vli_decode(size, &index_hash->pos,
@@ -234,18 +235,17 @@ lzma_index_hash_decode(lzma_index_hash *index_hash, const uint8_t *in,
ret = LZMA_OK;
index_hash->pos = 0;
- if (index_hash->sequence == SEQ_TOTAL) {
- if (index_hash->total_size > TOTAL_SIZE_ENCODED_MAX)
+ if (index_hash->sequence == SEQ_UNPADDED) {
+ if (index_hash->unpadded_size < UNPADDED_SIZE_MIN
+ || index_hash->unpadded_size
+ > UNPADDED_SIZE_MAX)
return LZMA_DATA_ERROR;
- index_hash->total_size = total_size_decode(
- index_hash->total_size);
-
index_hash->sequence = SEQ_UNCOMPRESSED;
} else {
// Update the hash.
return_if_error(hash_append(&index_hash->records,
- index_hash->total_size,
+ index_hash->unpadded_size,
index_hash->uncompressed_size));
// Verify that we don't go over the known sizes. Note
@@ -254,8 +254,8 @@ lzma_index_hash_decode(lzma_index_hash *index_hash, const uint8_t *in,
// that values in index_hash->blocks are already
// validated and we are fine as long as we don't
// exceed them in index_hash->records.
- if (index_hash->blocks.total_size
- < index_hash->records.total_size
+ if (index_hash->blocks.blocks_size
+ < index_hash->records.blocks_size
|| index_hash->blocks.uncompressed_size
< index_hash->records.uncompressed_size
|| index_hash->blocks.index_list_size
@@ -264,7 +264,7 @@ lzma_index_hash_decode(lzma_index_hash *index_hash, const uint8_t *in,
// Check if this was the last Record.
index_hash->sequence = --index_hash->remaining == 0
- ? SEQ_PADDING_INIT : SEQ_TOTAL;
+ ? SEQ_PADDING_INIT : SEQ_UNPADDED;
}
break;
@@ -288,8 +288,8 @@ lzma_index_hash_decode(lzma_index_hash *index_hash, const uint8_t *in,
}
// Compare the sizes.
- if (index_hash->blocks.total_size
- != index_hash->records.total_size
+ if (index_hash->blocks.blocks_size
+ != index_hash->records.blocks_size
|| index_hash->blocks.uncompressed_size
!= index_hash->records.uncompressed_size
|| index_hash->blocks.index_list_size
generated by cgit v1.2.3 (git 2.25.1) at 2024-11-10 20:55:28 +0000