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Merge pull request #6291 from libgit2/cmn/midx-no-hash

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midx: do not verify the checksum on load
This commit is contained in:
Edward Thomson
2022-06-11 16:26:50 -04:00
committed by GitHub
parent 4f0ee02fc2 a3f9617bcf
commit 4f7b568db2
1 changed files with 0 additions and 6 deletions
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6
src/libgit2/midx.c
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@@ -179,7 +179,6 @@ int git_midx_parse(
uint32_t i;
off64_t last_chunk_offset, chunk_offset, trailer_offset;
size_t checksum_size;
unsigned char checksum[GIT_HASH_SHA1_SIZE];
int error;
struct git_midx_chunk chunk_packfile_names = {0},
chunk_oid_fanout = {0},
@@ -217,11 +216,6 @@ int git_midx_parse(
return midx_error("wrong index size");
memcpy(idx->checksum, data + trailer_offset, checksum_size);
if (git_hash_buf(checksum, data, (size_t)trailer_offset, GIT_HASH_ALGORITHM_SHA1) < 0)
return midx_error("could not calculate signature");
if (memcmp(checksum, idx->checksum, checksum_size) != 0)
return midx_error("index signature mismatch");
chunk_hdr = data + sizeof(struct git_midx_header);
last_chunk = NULL;
for (i = 0; i < hdr->chunks; ++i, chunk_hdr += 12) {