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added maxdataoutlen to 14a apdu

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This commit is contained in:
merlokk 2017-11-21 00:38:46 +02:00
commit 3128f56dca
3 changed files with 12 additions and 6 deletions
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10
client/cmdhf14a.c
View file

@ -648,7 +648,7 @@ void DropField() {
SendCommand(&c);
}
int ExchangeAPDU14a(uint8_t *datain, int datainlen, bool activateField, bool leaveSignalON, uint8_t *dataout, int *dataoutlen) {
int ExchangeAPDU14a(uint8_t *datain, int datainlen, bool activateField, bool leaveSignalON, uint8_t *dataout, int maxdataoutlen, int *dataoutlen) {
uint16_t cmdc = 0;
if (activateField) {
@ -686,6 +686,12 @@ int ExchangeAPDU14a(uint8_t *datain, int datainlen, bool activateField, bool lea
*dataoutlen = iLen - 2;
if (*dataoutlen < 0)
*dataoutlen = 0;
if (maxdataoutlen && *dataoutlen > maxdataoutlen) {
PrintAndLog("APDU ERROR: Buffer too small(%d). Needs %d bytes", *dataoutlen, maxdataoutlen);
return 2;
}
memcpy(dataout, recv, *dataoutlen);
if(!iLen) {
@ -779,7 +785,7 @@ int CmdHF14AAPDU(const char *cmd) {
PrintAndLog(">>>>[%s%s%s] %s", activateField ? "sel ": "", leaveSignalON ? "keep ": "", decodeTLV ? "TLV": "", sprint_hex(data, datalen));
int res = ExchangeAPDU14a(data, datalen, activateField, leaveSignalON, data, &datalen);
int res = ExchangeAPDU14a(data, datalen, activateField, leaveSignalON, data, USB_CMD_DATA_SIZE, &datalen);
if (res)
return res;

2
client/cmdhf14a.h
View file

@ -31,6 +31,6 @@ int CmdHF14ASnoop(const char *Cmd);
char* getTagInfo(uint8_t uid);
extern void DropField();
extern int ExchangeAPDU14a(uint8_t *datain, int datainlen, bool activateField, bool leaveSignalON, uint8_t *dataout, int *dataoutlen);
extern int ExchangeAPDU14a(uint8_t *datain, int datainlen, bool activateField, bool leaveSignalON, uint8_t *dataout, int maxdataoutlen, int *dataoutlen);
#endif

6
client/emv/emvcore.c
View file

@ -157,7 +157,7 @@ int EMVSelect(bool ActivateField, bool LeaveFieldON, uint8_t *AID, size_t AIDLen
if (APDULogging)
PrintAndLog(">>>> %s", sprint_hex(data, AIDLen + 6));
int res = ExchangeAPDU14a(data, AIDLen + 6, ActivateField, LeaveFieldON, Result, (int *)ResultLen);
int res = ExchangeAPDU14a(data, AIDLen + 6, ActivateField, LeaveFieldON, Result, (int)MaxResultLen, (int *)ResultLen);
if (APDULogging)
PrintAndLog("<<<< %s", sprint_hex(Result, *ResultLen));
@ -381,7 +381,7 @@ int EMVGPO(bool LeaveFieldON, uint8_t *PDOL, size_t PDOLLen, uint8_t *Result, si
if (APDULogging)
PrintAndLog(">>>> %s", sprint_hex(data, PDOLLen + 5));
int res = ExchangeAPDU14a(data, PDOLLen + 5, false, LeaveFieldON, Result, (int *)ResultLen);
int res = ExchangeAPDU14a(data, PDOLLen + 5, false, LeaveFieldON, Result, (int)MaxResultLen, (int *)ResultLen);
if (APDULogging)
PrintAndLog("<<<< %s", sprint_hex(Result, *ResultLen));
@ -431,7 +431,7 @@ int EMVReadRecord(bool LeaveFieldON, uint8_t SFI, uint8_t SFIrec, uint8_t *Resul
if (APDULogging)
PrintAndLog(">>>> %s", sprint_hex(data, 5));
int res = ExchangeAPDU14a(data, 5, false, LeaveFieldON, Result, (int *)ResultLen);
int res = ExchangeAPDU14a(data, 5, false, LeaveFieldON, Result, (int)MaxResultLen, (int *)ResultLen);
if (APDULogging)
PrintAndLog("<<<< %s", sprint_hex(Result, *ResultLen));