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fix valgrind memory bug

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This commit is contained in:
iceman1001 2024-04-24 21:24:52 +02:00
commit b754f09d24
1 changed files with 34 additions and 15 deletions
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39
client/src/cmdhf14b.c
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@ -387,24 +387,34 @@ static bool get_14b_UID(uint8_t *d, iso14b_type_t *found_type) {
* filename must match '^hf-14b-[0-9A-F]{16}'
*/
uint8_t *get_uid_from_filename(const char *filename) {
static uint8_t uid[8] ;
memset(uid, 0, 8) ;
char uidinhex[17] ;
if (strlen(filename) < 23 || strncmp(filename, "hf-14b-", 7)) {
static uint8_t uid[8];
memset(uid, 0, 8);
if (strlen(filename) < 23) {
PrintAndLogEx(ERR, "can't get uid from filename '%s'. Expected format is hf-14b-<uid>...", filename);
return uid ;
return uid;
}
char *found = strstr(filename, "hf-14b-");
if (found == NULL) {
PrintAndLogEx(ERR, "can't get uid from filename '%s'. Expected format is hf-14b-<uid>...", filename);
return uid;
}
// extract uid part from filename
strncpy(uidinhex, filename + 7, 16) ;
uidinhex[16] = '\0' ;
char uidinhex[17] = {0};
strncpy(uidinhex, found + 7, 16);
uidinhex[16] = '\0';
int len = hex_to_bytes(uidinhex, uid, 8);
if (len == 8)
if (len == 8) {
return SwapEndian64(uid, 8, 8);
else {
} else {
PrintAndLogEx(ERR, "get_uid_from_filename failed: hex_to_bytes returned %d", len);
memset(uid, 0, 8);
}
return uid ;
return uid;
}
// print full atqb info
@ -2471,11 +2481,20 @@ static int CmdHF14BAPDU(const char *Cmd) {
}
PrintAndLogEx(INFO, "<<<< %s", sprint_hex(data, datalen));
uint16_t sw = get_sw(data, datalen);
if (sw != ISO7816_OK) {
PrintAndLogEx(SUCCESS, "APDU response: " _YELLOW_("%02x %02x") " - %s"
, data[datalen - 2]
, data[datalen - 1]
, GetAPDUCodeDescription(data[datalen - 2], data[datalen - 1])
);
} else {
PrintAndLogEx(SUCCESS, "APDU response: " _GREEN_("%02x %02x") " - %s"
, data[datalen - 2]
, data[datalen - 1]
, GetAPDUCodeDescription(data[datalen - 2], data[datalen - 1])
);
}
// TLV decoder
if (decode_TLV && datalen > 4) {