return 0;
}
- if (param == 'f') {
- ShowWaitCycles = true;
- }
+ ShowWaitCycles = (param == 'f');
// for the time being. Need better Bigbuf handling.
#define TRACE_SIZE 3000
PrintAndLog("Start = Start of Start Bit, End = End of last modulation. Src = Source of Transfer");
PrintAndLog("All times are in carrier periods (1/13.56Mhz)");
PrintAndLog("");
- PrintAndLog(" Start | End | Src | Data");
- PrintAndLog("-----------|-----------|-----|--------");
+ PrintAndLog(" Start | End | Src | Data (! denotes parity error) | CRC ");
+ PrintAndLog("-----------|-----------|-----|-----------------------------------------------------------------------");
uint16_t tracepos = 0;
uint16_t duration;
for (;;) {
- if(tracepos >= TRACE_SIZE) {
- break;
- }
+ if(tracepos >= TRACE_SIZE) break;
timestamp = *((uint32_t *)(trace + tracepos));
+
+ // Break and stick with current result if buffer was not completely full
+ if (timestamp == 0x44444444) break;
+
if(tracepos == 0) {
first_timestamp = timestamp;
}
+
tracepos += 4;
duration = *((uint16_t *)(trace + tracepos));
tracepos += 2;
data_len = *((uint16_t *)(trace + tracepos));
tracepos += 2;
+ isResponse = false;
if (data_len & 0x8000) {
data_len &= 0x7fff;
isResponse = true;
- } else {
- isResponse = false;
}
-
+
parity_len = (data_len-1)/8 + 1;
-
- if (tracepos + data_len + parity_len >= TRACE_SIZE) {
- break;
- }
+
+ if (tracepos + data_len + parity_len >= TRACE_SIZE) break;
uint8_t *frame = trace + tracepos;
tracepos += data_len;
uint8_t *parityBytes = trace + tracepos;
tracepos += parity_len;
-
- // Break and stick with current result if buffer was not completely full
- if (timestamp == 0x44444444) break;
-
- char line[1000] = "";
- int j;
- for (j = 0; j < data_len; j++) {
+
+ char line[16][110];
+ for (int j = 0; j < data_len; j++) {
int oddparity = 0x01;
int k;
uint8_t parityBits = parityBytes[j>>3];
if (isResponse && (oddparity != ((parityBits >> (7-(j&0x0007))) & 0x01))) {
- sprintf(line+(j*4), "%02x! ", frame[j]);
+ sprintf(line[j/16]+((j%16)*4), "%02x! ", frame[j]);
} else {
- sprintf(line+(j*4), "%02x ", frame[j]);
+ sprintf(line[j/16]+((j%16)*4), "%02x ", frame[j]);
}
}
-
- char crc[6] = "";
+
+ char crc[5] = {0x00};
if (data_len > 2) {
uint8_t b1, b2;
ComputeCrc14443(CRC_14443_A, frame, data_len-2, &b1, &b2);
if (b1 != frame[data_len-2] || b2 != frame[data_len-1]) {
- sprintf(crc, (isResponse & (data_len < 6)) ? "" : " !crc");
- } else {
- sprintf(crc, "");
- }
+ sprintf(crc, (isResponse & (data_len < 6)) ? "" : "!crc");
+ }
}
EndOfTransmissionTimestamp = timestamp + duration;
-
- PrintAndLog(" %9d | %9d | %s | %s %s",
- (timestamp - first_timestamp),
- (EndOfTransmissionTimestamp - first_timestamp),
- (isResponse ? "Tag" : "Rdr"),
- line,
- crc);
+ int num_lines = (data_len - 1)/16 + 1;
+
+ for (int j = 0; j < num_lines; j++) {
+ if (j == 0) {
+ PrintAndLog(" %9d | %9d | %s | %-64s| %s",
+ (timestamp - first_timestamp),
+ (EndOfTransmissionTimestamp - first_timestamp),
+ (isResponse ? "Tag" : "Rdr"),
+ line[j],
+ (j == num_lines-1)?crc:""
+ );
+ } else {
+ PrintAndLog(" | | | %-64s| %s",
+ line[j],
+ (j == num_lines-1)?crc:"");
+ }
+ }
bool next_isResponse = *((uint16_t *)(trace + tracepos + 6)) & 0x8000;
if (ShowWaitCycles && !isResponse && next_isResponse) {
uint32_t next_timestamp = *((uint32_t *)(trace + tracepos));
if (next_timestamp != 0x44444444) {
- PrintAndLog(" %9d | %9d | %s | fdt (Frame Delay Time): %d",
- (EndOfTransmissionTimestamp - first_timestamp),
- (next_timestamp - first_timestamp),
- " ",
- (next_timestamp - EndOfTransmissionTimestamp));
- }
+ PrintAndLog(" %9d | %9d | %s | fdt (Frame Delay Time): %d",
+ (EndOfTransmissionTimestamp - first_timestamp),
+ (next_timestamp - first_timestamp),
+ " ",
+ (next_timestamp - EndOfTransmissionTimestamp));
}
-
+ }
}
-
return 0;
}
int CmdHF14AReader(const char *Cmd)
{
- //UsbCommand c = {CMD_READER_ISO_14443a, {ISO14A_CONNECT | ISO14A_NO_DISCONNECT, 0, 0}};
- UsbCommand c = {CMD_READER_ISO_14443a, {ISO14A_CONNECT , 0, 0}};
+ UsbCommand c = {CMD_READER_ISO_14443a, {ISO14A_CONNECT | ISO14A_NO_DISCONNECT, 0, 0}};
SendCommand(&c);
UsbCommand resp;
if(select_status == 0) {
PrintAndLog("iso14443a card select failed");
+ // disconnect
+ c.arg[0] = 0;
+ c.arg[1] = 0;
+ c.arg[2] = 0;
+ SendCommand(&c);
return 0;
}
memcpy(&card.ats, resp.d.asBytes, resp.arg[0]);
card.ats_len = resp.arg[0]; // note: ats_len includes CRC Bytes
}
-
- // disconnect
- c.arg[0] = 0;
- c.arg[1] = 0;
- c.arg[2] = 0;
- SendCommand(&c);
-
if(card.ats_len >= 3) { // a valid ATS consists of at least the length byte (TL) and 2 CRC bytes
bool ta1 = 0, tb1 = 0, tc1 = 0;
PrintAndLog("proprietary non iso14443-4 card found, RATS not supported");
}
+
+ // try to see if card responses to "chinese magic backdoor" commands.
+ c.cmd = CMD_MIFARE_CIDENT;
+ c.arg[0] = 0;
+ c.arg[1] = 0;
+ c.arg[2] = 0;
+ SendCommand(&c);
+ WaitForResponse(CMD_ACK,&resp);
+ uint8_t isOK = resp.arg[0] & 0xff;
+ PrintAndLog(" Answers to chinese magic backdoor commands: %s", (isOK ? "YES" : "NO") );
+
+ // disconnect
+ c.cmd = CMD_READER_ISO_14443a;
+ c.arg[0] = 0;
+ c.arg[1] = 0;
+ c.arg[2] = 0;
+ SendCommand(&c);
+
return select_status;
}
if (param_getchar(Cmd, 0) == 'h') {
PrintAndLog("It get data from the field and saves it into command buffer.");
- PrintAndLog("Buffer accessible from command hf 14a list.");
+ PrintAndLog("Buffer accessible from command hf list 14a.");
PrintAndLog("Usage: hf 14a snoop [c][r]");
PrintAndLog("c - triggered by first data from card");
PrintAndLog("r - triggered by first 7-bit request from reader (REQ,WUP,...)");
static command_t CommandTable[] =
{
{"help", CmdHelp, 1, "This help"},
- {"list", CmdHF14AList, 0, "List ISO 14443a history"},
+ {"list", CmdHF14AList, 0, "[Deprecated] List ISO 14443a history"},
{"reader", CmdHF14AReader, 0, "Act like an ISO14443 Type A reader"},
{"cuids", CmdHF14ACUIDs, 0, "<n> Collect n>0 ISO14443 Type A UIDs in one go"},
{"sim", CmdHF14ASim, 0, "<UID> -- Fake ISO 14443a tag"},
projects / proxmark3-svn / blobdiff