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fix split block length bug

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merlokk 2021-07-31 20:33:54 +03:00
commit 5eefe7d14c
1 changed files with 6 additions and 1 deletions
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7
client/src/mifare/desfirecore.c
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@ -695,8 +695,13 @@ static void DesfireSplitBytesToBlock(uint8_t *blockdata, size_t *blockdatacount,
size_t len = 0;
for (int i = 0; i < *blockdatacount; i++) {
size_t tlen = len + blockdata[i * blockdatasize];
if (tlen > dstdatalen)
if (tlen > dstdatalen) {
tlen = dstdatalen;
if (tlen >= len)
blockdata[i * blockdatasize] = tlen - len;
else
blockdata[i * blockdatasize] = 0;
}
if (len == tlen) {
*blockdatacount = i;
break;