+// for the time being. Need better Bigbuf handling.
+#define TRACE_SIZE 3000
+
+#define ICLASS_CMD_ACTALL 0x0A
+#define ICLASS_CMD_IDENTIFY 0x0C
+#define ICLASS_CMD_READ 0x0C
+#define ICLASS_CMD_SELECT 0x81
+#define ICLASS_CMD_PAGESEL 0x84
+#define ICLASS_CMD_READCHECK 0x88
+#define ICLASS_CMD_CHECK 0x05
+#define ICLASS_CMD_SOF 0x0F
+#define ICLASS_CMD_HALT 0x00
+
+#define iso14443_CMD_WUPA 0x52
+#define iso14443_CMD_SELECT 0x93
+#define iso14443_CMD_SELECT_2 0x95
+#define iso14443_CMD_REQ 0x26
+#define iso14443_CMD_READBLOCK 0x30
+#define iso14443_CMD_WRITEBLOCK 0xA0
+#define iso14443_CMD_INC 0xC0
+#define iso14443_CMD_DEC 0xC1
+#define iso14443_CMD_RESTORE 0xC2
+#define iso14443_CMD_TRANSFER 0xB0
+#define iso14443_CMD_HALT 0x50
+#define iso14443_CMD_RATS 0xE0
+
+
+void annotateIso14443a(char *exp, size_t size, uint8_t* cmd, uint8_t cmdsize)
+{
+ switch(cmd[0])
+ {
+ case iso14443_CMD_WUPA: snprintf(exp,size,"WUPA"); break;
+ case iso14443_CMD_SELECT:{
+ if(cmdsize > 2)
+ {
+ snprintf(exp,size,"SELECT_UID"); break;
+ }else
+ {
+ snprintf(exp,size,"SELECT_ALL"); break;
+ }
+ }
+ case iso14443_CMD_SELECT_2: snprintf(exp,size,"SELECT_2"); break;
+ case iso14443_CMD_REQ: snprintf(exp,size,"REW"); break;
+ case iso14443_CMD_READBLOCK: snprintf(exp,size,"READBLOCK(%d)",cmd[1]); break;
+ case iso14443_CMD_WRITEBLOCK: snprintf(exp,size,"WRITEBLOCK(%d)",cmd[1]); break;
+ case iso14443_CMD_INC: snprintf(exp,size,"INC(%d)",cmd[1]); break;
+ case iso14443_CMD_DEC: snprintf(exp,size,"DEC(%d)",cmd[1]); break;
+ case iso14443_CMD_RESTORE: snprintf(exp,size,"RESTORE(%d)",cmd[1]); break;
+ case iso14443_CMD_TRANSFER: snprintf(exp,size,"TRANSFER(%d)",cmd[1]); break;
+ case iso14443_CMD_HALT: snprintf(exp,size,"HALT"); break;
+ case iso14443_CMD_RATS: snprintf(exp,size,"RATS"); break;
+ default: snprintf(exp,size,"?"); break;
+ }
+ return;
+}
+
+void annotateIclass(char *exp, size_t size, uint8_t* cmd, uint8_t cmdsize)
+{
+
+ if(cmdsize > 1 && cmd[0] == ICLASS_CMD_READ)
+ {
+ snprintf(exp,size,"READ(%d)",cmd[1]);
+ return;
+ }
+
+ switch(cmd[0])
+ {
+ case ICLASS_CMD_ACTALL: snprintf(exp,size,"ACTALL"); break;
+ case ICLASS_CMD_IDENTIFY: snprintf(exp,size,"IDENTIFY"); break;
+ case ICLASS_CMD_SELECT: snprintf(exp,size,"SELECT"); break;
+ case ICLASS_CMD_PAGESEL: snprintf(exp,size,"PAGESEL"); break;
+ case ICLASS_CMD_READCHECK: snprintf(exp,size,"READCHECK"); break;
+ case ICLASS_CMD_CHECK: snprintf(exp,size,"CHECK"); break;
+ case ICLASS_CMD_SOF: snprintf(exp,size,"SOF"); break;
+ case ICLASS_CMD_HALT: snprintf(exp,size,"HALT"); break;
+ default: snprintf(exp,size,"?"); break;
+ }
+ return;
+}
+
+
+
+uint16_t printTraceLine(uint16_t tracepos, uint8_t* trace, bool iclass, bool showWaitCycles)
+{
+ bool isResponse;
+ uint16_t duration, data_len,parity_len;
+
+ uint32_t timestamp, first_timestamp, EndOfTransmissionTimestamp;
+ char explanation[30] = {0};
+
+ first_timestamp = *((uint32_t *)(trace));
+ timestamp = *((uint32_t *)(trace + tracepos));
+ // Break and stick with current result if buffer was not completely full
+ if (timestamp == 0x44444444) return TRACE_SIZE;
+
+ tracepos += 4;
+ duration = *((uint16_t *)(trace + tracepos));
+ tracepos += 2;
+ data_len = *((uint16_t *)(trace + tracepos));
+ tracepos += 2;
+
+ 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) {
+ return TRACE_SIZE;
+ }
+
+ uint8_t *frame = trace + tracepos;
+ tracepos += data_len;
+ uint8_t *parityBytes = trace + tracepos;
+ tracepos += parity_len;
+
+ //--- Draw the data column
+ char line[16][110];
+ for (int j = 0; j < data_len; j++) {
+ int oddparity = 0x01;
+ int k;
+
+ for (k=0 ; k<8 ; k++) {
+ oddparity ^= (((frame[j] & 0xFF) >> k) & 0x01);
+ }
+
+ uint8_t parityBits = parityBytes[j>>3];
+
+ if (isResponse && (oddparity != ((parityBits >> (7-(j&0x0007))) & 0x01))) {
+ sprintf(line[j/16]+((j%16)*4), "%02x! ", frame[j]);
+ } else {
+ sprintf(line[j/16]+((j%16)*4), "%02x ", frame[j]);
+ }
+ }
+ //--- Draw the CRC column
+ bool crcError = false;
+
+ if (data_len > 2) {
+ uint8_t b1, b2;
+ if(iclass)
+ {
+ if(!isResponse && data_len == 4 ) {
+ // Rough guess that this is a command from the reader
+ // For iClass the command byte is not part of the CRC
+ ComputeCrc14443(CRC_ICLASS, &frame[1], data_len-3, &b1, &b2);
+ }
+ else {
+ // For other data.. CRC might not be applicable (UPDATE commands etc.)
+ ComputeCrc14443(CRC_ICLASS, frame, data_len-2, &b1, &b2);
+ }
+
+ if (b1 != frame[data_len-2] || b2 != frame[data_len-1]) {
+ crcError = true;
+ }
+
+ }else{//Iso 14443a
+
+ ComputeCrc14443(CRC_14443_A, frame, data_len-2, &b1, &b2);
+
+ if (b1 != frame[data_len-2] || b2 != frame[data_len-1]) {
+ if(!(isResponse & (data_len < 6)))
+ {
+ crcError = true;
+ }
+ }
+ }
+
+ }
+ char *crc = crcError ? "!crc" :" ";
+
+ EndOfTransmissionTimestamp = timestamp + duration;
+
+ if(!isResponse)
+ {
+ if(iclass) annotateIclass(explanation,sizeof(explanation),frame,data_len);
+ else annotateIso14443a(explanation,sizeof(explanation),frame,data_len);
+ }
+
+ 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| %s",
+ (timestamp - first_timestamp),
+ (EndOfTransmissionTimestamp - first_timestamp),
+ (isResponse ? "Tag" : "Rdr"),
+ line[j],
+ (j == num_lines-1) ? crc : " ",
+ (j == num_lines-1) ? explanation : "");
+ } else {
+ PrintAndLog(" | | | %-64s| %s| %s",
+ line[j],
+ (j == num_lines-1)?crc:" ",
+ (j == num_lines-1) ? explanation : "");
+ }
+ }
+
+ 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));
+ }
+ }
+ return tracepos;
+}
+
+int CmdHFList(const char *Cmd)
+{
+ bool showWaitCycles = false;
+ char type[40] = {0};
+ int tlen = param_getstr(Cmd,0,type);
+ char param = param_getchar(Cmd, 1);
+ bool errors = false;
+ bool iclass = false;
+ //Validate params
+ if(tlen == 0 || (strcmp(type, "iclass") != 0 && strcmp(type,"14a") != 0))
+ {
+ errors = true;
+ }
+ if(param == 'h' || (param !=0 && param != 'f'))
+ {
+ errors = true;
+ }
+
+ if (errors) {
+ PrintAndLog("List protocol data in trace buffer.");
+ PrintAndLog("Usage: hf list [14a|iclass] [f]");
+ PrintAndLog(" - interpret data as iso14443a communications");
+ PrintAndLog(" iclass - interpret data as iclass communications");
+ PrintAndLog(" f - show frame delay times as well");
+ PrintAndLog("");
+ PrintAndLog("example: hf list 14a f");
+ PrintAndLog("example: hf list iclass");
+ return 0;
+ }
+ if(strcmp(type, "iclass") == 0)
+ {
+ iclass = true;
+ }
+
+ if (param == 'f') {
+ showWaitCycles = true;
+ }
+
+
+ uint8_t trace[TRACE_SIZE];
+ uint16_t tracepos = 0;
+ GetFromBigBuf(trace, TRACE_SIZE, 0);
+ WaitForResponse(CMD_ACK, NULL);
+
+ PrintAndLog("Recorded Activity");
+ PrintAndLog("");
+ PrintAndLog("Start = Start of Start Bit, End = End of last modulation. Src = Source of Transfer");
+ PrintAndLog("iso14443a - All times are in carrier periods (1/13.56Mhz)");
+ PrintAndLog("iClass - Timings are not as accurate");
+ PrintAndLog("");
+ PrintAndLog(" Start | End | Src | Data (! denotes parity error) | CRC | Annotation |");
+ PrintAndLog("-----------|-----------|-----|-----------------------------------------------------------------|-----|--------------------|");
+
+ while(tracepos < TRACE_SIZE)
+ {
+ tracepos = printTraceLine(tracepos, trace, iclass, showWaitCycles);
+ }
+ return 0;
+}
+
projects / proxmark3-svn / commitdiff