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fix endless loop (#782)

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This commit is contained in:
Oleg Moiseenko 2019-02-09 23:38:09 +02:00 • committed by pwpiwi
parent 41bdfce385
commit c719d385ef
1 changed files with 9 additions and 7 deletions
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16
armsrc/iso14443a.c
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@ -1955,7 +1955,7 @@ int iso14_apdu(uint8_t *cmd, uint16_t cmd_len, void *data, uint8_t *res) {
return 0; //DATA LINK ERROR
} else{
// S-Block WTX
while((data_bytes[0] & 0xF2) == 0xF2) {
while(len && ((data_bytes[0] & 0xF2) == 0xF2)) {
uint32_t save_iso14a_timeout = iso14a_get_timeout();
// temporarily increase timeout
iso14a_set_timeout(MAX((data_bytes[1] & 0x3f) * save_iso14a_timeout, MAX_ISO14A_TIMEOUT));
@ -1994,12 +1994,14 @@ int iso14_apdu(uint8_t *cmd, uint16_t cmd_len, void *data, uint8_t *res) {
}
// cut frame byte
len -= 1;
// memmove(data_bytes, data_bytes + 1, len);
for (int i = 0; i < len; i++)
data_bytes[i] = data_bytes[i + 1];
if (len) {
// cut frame byte
len -= 1;
// memmove(data_bytes, data_bytes + 1, len);
for (int i = 0; i < len; i++)
data_bytes[i] = data_bytes[i + 1];
}
return len;
}