Function parse_footer

reftable/table.c:43–128

}

static int parse_footer(struct reftable_table *t, uint8_t *footer,
			uint8_t *header)
{
	uint8_t *f = footer;
	uint8_t first_block_typ;
	int err = 0;
	uint32_t computed_crc;
	uint32_t file_crc;

	if (memcmp(f, "REFT", 4)) {
		err = REFTABLE_FORMAT_ERROR;
		goto done;
	}
	f += 4;

	if (memcmp(footer, header, header_size(t->version))) {
		err = REFTABLE_FORMAT_ERROR;
		goto done;
	}

	f++;
	t->block_size = reftable_get_be24(f);

	f += 3;
	t->min_update_index = reftable_get_be64(f);
	f += 8;
	t->max_update_index = reftable_get_be64(f);
	f += 8;

	if (t->version == 1) {
		t->hash_id = REFTABLE_HASH_SHA1;
	} else {
		switch (reftable_get_be32(f)) {
		case REFTABLE_FORMAT_ID_SHA1:
			t->hash_id = REFTABLE_HASH_SHA1;
			break;
		case REFTABLE_FORMAT_ID_SHA256:
			t->hash_id = REFTABLE_HASH_SHA256;
			break;
		default:
			err = REFTABLE_FORMAT_ERROR;
			goto done;
		}

		f += 4;
	}

	t->ref_offsets.index_offset = reftable_get_be64(f);
	f += 8;

	t->obj_offsets.offset = reftable_get_be64(f);
	f += 8;

	t->object_id_len = t->obj_offsets.offset & ((1 << 5) - 1);
	t->obj_offsets.offset >>= 5;

	t->obj_offsets.index_offset = reftable_get_be64(f);
	f += 8;