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(Database) Fix heap-buffer-overflow when fetching CRC values

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This commit is contained in:
jdgleaver 2021-08-11 17:32:45 +01:00
parent 013dd30bde
commit b2a4620f3b
1 changed files with 17 additions and 2 deletions
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19
database_info.c
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@ -281,8 +281,23 @@ static int database_cursor_iterate(libretrodb_cursor_t *cur,
else if (string_is_equal(str, "size"))
db_info->size = (unsigned)val->val.uint_;
else if (string_is_equal(str, "crc"))
db_info->crc32 = swap_if_little32(
*(uint32_t*)val->val.binary.buff);
{
switch (val->val.binary.len)
{
case 1:
db_info->crc32 = *(uint8_t*)val->val.binary.buff;
break;
case 2:
db_info->crc32 = swap_if_little16(*(uint16_t*)val->val.binary.buff);
break;
case 4:
db_info->crc32 = swap_if_little32(*(uint32_t*)val->val.binary.buff);
break;
default:
db_info->crc32 = 0;
break;
}
}
else if (string_is_equal(str, "sha1"))
db_info->sha1 = bin_to_hex_alloc(
(uint8_t*)val->val.binary.buff, val->val.binary.len);