diff options
Diffstat (limited to 'Utilities/cmliblzma/liblzma/common/block_util.c')
| -rw-r--r-- | Utilities/cmliblzma/liblzma/common/block_util.c | 13 |
1 files changed, 4 insertions, 9 deletions
diff --git a/Utilities/cmliblzma/liblzma/common/block_util.c b/Utilities/cmliblzma/liblzma/common/block_util.c index 4cd34d100..00c7fe8d5 100644 --- a/Utilities/cmliblzma/liblzma/common/block_util.c +++ b/Utilities/cmliblzma/liblzma/common/block_util.c @@ -17,14 +17,11 @@ extern LZMA_API(lzma_ret) lzma_block_compressed_size(lzma_block *block, lzma_vli unpadded_size) { - uint32_t container_size; - lzma_vli compressed_size; - // Validate everything but Uncompressed Size and filters. if (lzma_block_unpadded_size(block) == 0) return LZMA_PROG_ERROR; - container_size = block->header_size + const uint32_t container_size = block->header_size + lzma_check_size(block->check); // Validate that Compressed Size will be greater than zero. @@ -34,7 +31,7 @@ lzma_block_compressed_size(lzma_block *block, lzma_vli unpadded_size) // Calculate what Compressed Size is supposed to be. // If Compressed Size was present in Block Header, // compare that the new value matches it. - compressed_size = unpadded_size - container_size; + const lzma_vli compressed_size = unpadded_size - container_size; if (block->compressed_size != LZMA_VLI_UNKNOWN && block->compressed_size != compressed_size) return LZMA_DATA_ERROR; @@ -48,15 +45,13 @@ lzma_block_compressed_size(lzma_block *block, lzma_vli unpadded_size) extern LZMA_API(lzma_vli) lzma_block_unpadded_size(const lzma_block *block) { - lzma_vli unpadded_size; - // Validate the values that we are interested in i.e. all but // Uncompressed Size and the filters. // // NOTE: This function is used for validation too, so it is // essential that these checks are always done even if // Compressed Size is unknown. - if (block == NULL || block->version != 0 + if (block == NULL || block->version > 1 || block->header_size < LZMA_BLOCK_HEADER_SIZE_MIN || block->header_size > LZMA_BLOCK_HEADER_SIZE_MAX || (block->header_size & 3) @@ -71,7 +66,7 @@ lzma_block_unpadded_size(const lzma_block *block) return LZMA_VLI_UNKNOWN; // Calculate Unpadded Size and validate it. - unpadded_size = block->compressed_size + const lzma_vli unpadded_size = block->compressed_size + block->header_size + lzma_check_size(block->check); |