+/**
+ * @brief iso14443B_CRC_check Checks CRC in command or response
+ * @param isResponse
+ * @param data
+ * @param len
+ * @return 0 : CRC-command, CRC not ok
+ * 1 : CRC-command, CRC ok
+ * 2 : Not crc-command
+ */
+
+uint8_t iso14443B_CRC_check(bool isResponse, uint8_t* data, uint8_t len)
+{
+ uint8_t b1,b2;
+
+ if(len <= 2) return 2;
+
+ ComputeCrc14443(CRC_14443_B, data, len-2, &b1, &b2);
+ if(b1 != data[len-2] || b2 != data[len-1]) {
+ return 0;
+ } else {
+ return 1;
+ }
+}
+
+/**
+ * @brief iclass_CRC_Ok Checks CRC in command or response
+ * @param isResponse
+ * @param data
+ * @param len
+ * @return 0 : CRC-command, CRC not ok
+ * 1 : CRC-command, CRC ok
+ * 2 : Not crc-command
+ */
+uint8_t iclass_CRC_check(bool isResponse, uint8_t* data, uint8_t len)
+{
+ if(len < 4) return 2;//CRC commands (and responses) are all at least 4 bytes
+
+ uint8_t b1, b2;
+
+ if(!isResponse)//Commands to tag
+ {
+ /**
+ These commands should have CRC. Total length leftmost
+ 4 READ
+ 4 READ4
+ 12 UPDATE - unsecured, ends with CRC16
+ 14 UPDATE - secured, ends with signature instead
+ 4 PAGESEL
+ **/
+ if(len == 4 || len == 12)//Covers three of them
+ {
+ //Don't include the command byte
+ ComputeCrc14443(CRC_ICLASS, (data+1), len-3, &b1, &b2);
+ return b1 == data[len -2] && b2 == data[len-1];
+ }
+ return 2;
+ }else{
+ /**
+ These tag responses should have CRC. Total length leftmost
+
+ 10 READ data[8] crc[2]
+ 34 READ4 data[32]crc[2]
+ 10 UPDATE data[8] crc[2]
+ 10 SELECT csn[8] crc[2]
+ 10 IDENTIFY asnb[8] crc[2]
+ 10 PAGESEL block1[8] crc[2]
+ 10 DETECT csn[8] crc[2]
+
+ These should not
+
+ 4 CHECK chip_response[4]
+ 8 READCHECK data[8]
+ 1 ACTALL sof[1]
+ 1 ACT sof[1]
+
+ In conclusion, without looking at the command; any response
+ of length 10 or 34 should have CRC
+ **/
+ if(len != 10 && len != 34) return true;
+
+ ComputeCrc14443(CRC_ICLASS, data, len-2, &b1, &b2);
+ return b1 == data[len -2] && b2 == data[len-1];
+ }
+}
+
+
+bool is_last_record(uint16_t tracepos, uint8_t *trace, uint16_t traceLen)
+{
+ return(tracepos + sizeof(uint32_t) + sizeof(uint16_t) + sizeof(uint16_t) >= traceLen);
+}
+
+
+bool next_record_is_response(uint16_t tracepos, uint8_t *trace)
+{
+ uint16_t next_records_datalen = *((uint16_t *)(trace + tracepos + sizeof(uint32_t) + sizeof(uint16_t)));
+
+ return(next_records_datalen & 0x8000);
+}
+
+
+bool merge_topaz_reader_frames(uint32_t timestamp, uint32_t *duration, uint16_t *tracepos, uint16_t traceLen, uint8_t *trace, uint8_t *frame, uint8_t *topaz_reader_command, uint16_t *data_len)
+{
+
+#define MAX_TOPAZ_READER_CMD_LEN 16
+
+ uint32_t last_timestamp = timestamp + *duration;
+
+ if ((*data_len != 1) || (frame[0] == TOPAZ_WUPA) || (frame[0] == TOPAZ_REQA)) return false;
+
+ memcpy(topaz_reader_command, frame, *data_len);
+
+ while (!is_last_record(*tracepos, trace, traceLen) && !next_record_is_response(*tracepos, trace)) {
+ uint32_t next_timestamp = *((uint32_t *)(trace + *tracepos));
+ *tracepos += sizeof(uint32_t);
+ uint16_t next_duration = *((uint16_t *)(trace + *tracepos));
+ *tracepos += sizeof(uint16_t);
+ uint16_t next_data_len = *((uint16_t *)(trace + *tracepos)) & 0x7FFF;
+ *tracepos += sizeof(uint16_t);
+ uint8_t *next_frame = (trace + *tracepos);
+ *tracepos += next_data_len;
+ if ((next_data_len == 1) && (*data_len + next_data_len <= MAX_TOPAZ_READER_CMD_LEN)) {
+ memcpy(topaz_reader_command + *data_len, next_frame, next_data_len);
+ *data_len += next_data_len;
+ last_timestamp = next_timestamp + next_duration;
+ } else {
+ // rewind and exit
+ *tracepos = *tracepos - next_data_len - sizeof(uint16_t) - sizeof(uint16_t) - sizeof(uint32_t);
+ break;
+ }
+ uint16_t next_parity_len = (next_data_len-1)/8 + 1;
+ *tracepos += next_parity_len;
+ }
+
+ *duration = last_timestamp - timestamp;
+
+ return true;
+}
+
+
+uint16_t printTraceLine(uint16_t tracepos, uint16_t traceLen, uint8_t *trace, uint8_t protocol, bool showWaitCycles, bool markCRCBytes)
+{
+ bool isResponse;
+ uint16_t data_len, parity_len;
+ uint32_t duration;
+ uint8_t topaz_reader_command[9];
+ uint32_t timestamp, first_timestamp, EndOfTransmissionTimestamp;
+ char explanation[30] = {0};
+ uint8_t mfData[32] = {0};
+ size_t mfDataLen = 0;
+
+ if (tracepos + sizeof(uint32_t) + sizeof(uint16_t) + sizeof(uint16_t) > traceLen) return traceLen;
+
+ first_timestamp = *((uint32_t *)(trace));
+ timestamp = *((uint32_t *)(trace + tracepos));
+
+ 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 > traceLen) {
+ return traceLen;
+ }
+ uint8_t *frame = trace + tracepos;
+ tracepos += data_len;
+ uint8_t *parityBytes = trace + tracepos;
+ tracepos += parity_len;
+
+ if (protocol == TOPAZ && !isResponse) {
+ // topaz reader commands come in 1 or 9 separate frames with 7 or 8 Bits each.
+ // merge them:
+ if (merge_topaz_reader_frames(timestamp, &duration, &tracepos, traceLen, trace, frame, topaz_reader_command, &data_len)) {
+ frame = topaz_reader_command;
+ }
+ }
+
+ //Check the CRC status
+ uint8_t crcStatus = 2;
+
+ if (data_len > 2) {
+ switch (protocol) {
+ case ICLASS:
+ crcStatus = iclass_CRC_check(isResponse, frame, data_len);
+ break;
+ case ISO_14443B:
+ case TOPAZ:
+ crcStatus = iso14443B_CRC_check(isResponse, frame, data_len);
+ break;
+ case PROTO_MIFARE:
+ crcStatus = mifare_CRC_check(isResponse, frame, data_len);
+ break;
+ case ISO_14443A:
+ crcStatus = iso14443A_CRC_check(isResponse, frame, data_len);
+ break;
+ default:
+ break;
+ }
+ }
+ //0 CRC-command, CRC not ok
+ //1 CRC-command, CRC ok
+ //2 Not crc-command
+
+ //--- Draw the data column
+ //char line[16][110];
+ char line[16][110];
+
+ for (int j = 0; j < data_len && j/16 < 16; j++) {
+
+ uint8_t parityBits = parityBytes[j>>3];
+ if (protocol != ISO_14443B && (isResponse || protocol == ISO_14443A) && (oddparity8(frame[j]) != ((parityBits >> (7-(j&0x0007))) & 0x01))) {
+ snprintf(line[j/16]+(( j % 16) * 4),110, "%02x! ", frame[j]);
+ } else {
+ snprintf(line[j/16]+(( j % 16) * 4), 110, " %02x ", frame[j]);
+ }
+
+ }
+
+ if (markCRCBytes) {
+ if(crcStatus == 0 || crcStatus == 1)
+ {//CRC-command
+ char *pos1 = line[(data_len-2)/16]+(((data_len-2) % 16) * 4);
+ (*pos1) = '[';
+ char *pos2 = line[(data_len)/16]+(((data_len) % 16) * 4);
+ sprintf(pos2, "%c", ']');
+ }
+ }
+
+ if(data_len == 0)
+ {
+ if(data_len == 0){
+ sprintf(line[0],"<empty trace - possible error>");
+ }
+ }
+ //--- Draw the CRC column
+
+ char *crc = (crcStatus == 0 ? "!crc" : (crcStatus == 1 ? " ok " : " "));
+
+ EndOfTransmissionTimestamp = timestamp + duration;
+
+ if (protocol == PROTO_MIFARE)
+ annotateMifare(explanation, sizeof(explanation), frame, data_len, parityBytes, parity_len, isResponse);
+
+ if(!isResponse)
+ {
+ switch(protocol) {
+ case ICLASS: annotateIclass(explanation,sizeof(explanation),frame,data_len); break;
+ case ISO_14443A: annotateIso14443a(explanation,sizeof(explanation),frame,data_len); break;
+ case ISO_14443B: annotateIso14443b(explanation,sizeof(explanation),frame,data_len); break;
+ case TOPAZ: annotateTopaz(explanation,sizeof(explanation),frame,data_len); break;
+ default: break;
+ }
+ }
+
+ int num_lines = MIN((data_len - 1)/16 + 1, 16);
+ for (int j = 0; j < num_lines ; j++) {
+ if (j == 0) {
+ PrintAndLog(" %10d | %10d | %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 : "");
+ }
+ }
+
+ if (DecodeMifareData(frame, data_len, parityBytes, isResponse, mfData, &mfDataLen)) {
+ memset(explanation, 0x00, sizeof(explanation));
+ if (!isResponse) {
+ explanation[0] = '>';
+ annotateIso14443a(&explanation[1], sizeof(explanation) - 1, mfData, mfDataLen);
+ }
+ uint8_t crcc = iso14443A_CRC_check(isResponse, mfData, mfDataLen);
+ PrintAndLog(" | * | dec |%-64s | %-4s| %s",
+ sprint_hex(mfData, mfDataLen),
+ (crcc == 0 ? "!crc" : (crcc == 1 ? " ok " : " ")),
+ (true) ? explanation : "");
+ };
+
+ if (is_last_record(tracepos, trace, traceLen)) return traceLen;
+
+ if (showWaitCycles && !isResponse && next_record_is_response(tracepos, trace)) {
+ uint32_t next_timestamp = *((uint32_t *)(trace + tracepos));
+ PrintAndLog(" %10d | %10d | %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;
+ bool markCRCBytes = false;
+ bool loadFromFile = false;
+ bool saveToFile = false;
+ char param1 = '\0';
+ char param2 = '\0';
+ char param3 = '\0';
+ char type[40] = {0};
+ char filename[FILE_PATH_SIZE];
+ uint8_t protocol = 0;
+
+ // parse command line
+ int tlen = param_getstr(Cmd, 0, type, sizeof(type));
+ if (param_getlength(Cmd, 1) == 1) {
+ param1 = param_getchar(Cmd, 1);
+ } else {
+ param_getstr(Cmd, 1, filename, sizeof(filename));
+ }
+ if (param_getlength(Cmd, 2) == 1) {
+ param2 = param_getchar(Cmd, 2);
+ } else if (strlen(filename) == 0) {
+ param_getstr(Cmd, 2, filename, sizeof(filename));
+ }
+ if (param_getlength(Cmd, 3) == 1) {
+ param3 = param_getchar(Cmd, 3);
+ } else if (strlen(filename) == 0) {
+ param_getstr(Cmd, 3, filename, sizeof(filename));
+ }
+
+ // Validate param1
+ bool errors = false;
+
+ if(tlen == 0) {
+ errors = true;
+ }
+
+ if(param1 == 'h'
+ || (param1 != 0 && param1 != 'f' && param1 != 'c' && param1 != 'l')
+ || (param2 != 0 && param2 != 'f' && param2 != 'c' && param2 != 'l')
+ || (param3 != 0 && param3 != 'f' && param3 != 'c' && param3 != 'l')) {
+ errors = true;
+ }
+
+ if(!errors) {
+ if(strcmp(type, "iclass") == 0) {
+ protocol = ICLASS;
+ } else if(strcmp(type, "mf") == 0) {
+ protocol = PROTO_MIFARE;
+ } else if(strcmp(type, "14a") == 0) {
+ protocol = ISO_14443A;
+ } else if(strcmp(type, "14b") == 0) {
+ protocol = ISO_14443B;
+ } else if(strcmp(type,"topaz") == 0) {
+ protocol = TOPAZ;
+ } else if(strcmp(type,"raw") == 0) {
+ protocol = -1; //No crc, no annotations
+ } else if (strcmp(type, "save") == 0) {
+ saveToFile = true;
+ } else {
+ errors = true;
+ }
+ }
+
+ if (param1 == 'f' || param2 == 'f' || param3 == 'f') {
+ showWaitCycles = true;
+ }
+
+ if (param1 == 'c' || param2 == 'c' || param3 == 'c') {
+ markCRCBytes = true;
+ }
+
+ if (param1 == 'l' || param2 == 'l' || param3 == 'l') {
+ loadFromFile = true;
+ }
+
+ if ((loadFromFile || saveToFile) && strlen(filename) == 0) {
+ errors = true;
+ }
+
+ if (loadFromFile && saveToFile) {
+ errors = true;
+ }
+
+ if (errors) {
+ PrintAndLog("List or save protocol data.");
+ PrintAndLog("Usage: hf list <protocol> [f] [c] [l <filename>]");
+ PrintAndLog(" hf list save <filename>");
+ PrintAndLog(" f - show frame delay times as well");
+ PrintAndLog(" c - mark CRC bytes");
+ PrintAndLog(" l - load data from file instead of trace buffer");
+ PrintAndLog(" save - save data to file");
+ PrintAndLog("Supported <protocol> values:");
+ PrintAndLog(" raw - just show raw data without annotations");
+ PrintAndLog(" 14a - interpret data as iso14443a communications");
+ PrintAndLog(" mf - interpret data as iso14443a communications and decrypt crypto1 stream");
+ PrintAndLog(" 14b - interpret data as iso14443b communications");
+ PrintAndLog(" iclass - interpret data as iclass communications");
+ PrintAndLog(" topaz - interpret data as topaz communications");
+ PrintAndLog("");
+ PrintAndLog("example: hf list 14a f");
+ PrintAndLog("example: hf list iclass");
+ PrintAndLog("example: hf list save myCardTrace.trc");
+ PrintAndLog("example: hf list 14a l myCardTrace.trc");
+ return 0;
+ }
+
+
+ uint8_t *trace;
+ uint32_t tracepos = 0;
+ uint32_t traceLen = 0;
+
+ if (loadFromFile) {
+ #define TRACE_CHUNK_SIZE (1<<16) // 64K to start with. Will be enough for BigBuf and some room for future extensions
+ FILE *tracefile = NULL;
+ size_t bytes_read;
+ trace = malloc(TRACE_CHUNK_SIZE);
+ if (trace == NULL) {
+ PrintAndLog("Cannot allocate memory for trace");
+ return 2;
+ }
+ if ((tracefile = fopen(filename,"rb")) == NULL) {
+ PrintAndLog("Could not open file %s", filename);
+ free(trace);
+ return 0;
+ }
+ while (!feof(tracefile)) {
+ bytes_read = fread(trace+traceLen, 1, TRACE_CHUNK_SIZE, tracefile);
+ traceLen += bytes_read;
+ if (!feof(tracefile)) {
+ uint8_t *p = realloc(trace, traceLen + TRACE_CHUNK_SIZE);
+ if (p == NULL) {
+ PrintAndLog("Cannot allocate memory for trace");
+ free(trace);
+ fclose(tracefile);
+ return 2;
+ }
+ trace = p;
+ }
+ }
+ fclose(tracefile);
+ } else {
+ trace = malloc(USB_CMD_DATA_SIZE);
+ // Query for the size of the trace
+ UsbCommand response;
+ GetFromBigBuf(trace, USB_CMD_DATA_SIZE, 0, &response, -1, false);
+ traceLen = response.arg[2];
+ if (traceLen > USB_CMD_DATA_SIZE) {
+ uint8_t *p = realloc(trace, traceLen);
+ if (p == NULL) {
+ PrintAndLog("Cannot allocate memory for trace");
+ free(trace);
+ return 2;
+ }
+ trace = p;
+ GetFromBigBuf(trace, traceLen, 0, NULL, -1, false);
+ }
+ }
+
+ if (saveToFile) {
+ FILE *tracefile = NULL;
+ if ((tracefile = fopen(filename,"wb")) == NULL) {
+ PrintAndLog("Could not create file %s", filename);
+ return 1;
+ }
+ fwrite(trace, 1, traceLen, tracefile);
+ PrintAndLog("Recorded Activity (TraceLen = %d bytes) written to file %s", traceLen, filename);
+ fclose(tracefile);
+ } else {
+ PrintAndLog("Recorded Activity (TraceLen = %d bytes)", traceLen);
+ 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("------------|------------|-----|-----------------------------------------------------------------|-----|--------------------|");
+
+ ClearAuthData();
+ while(tracepos < traceLen)
+ {
+ tracepos = printTraceLine(tracepos, traceLen, trace, protocol, showWaitCycles, markCRCBytes);
+ }
+ }
+
+ free(trace);
+ return 0;
+}
+
+int CmdHFSearch(const char *Cmd){
+ int ans = 0;
+ PrintAndLog("");
+ ans = CmdHF14AInfo("s");
+ if (ans > 0) {
+ PrintAndLog("\nValid ISO14443A Tag Found - Quiting Search\n");
+ return ans;
+ }
+ ans = HFiClassReader("", false, false);
+ if (ans) {
+ PrintAndLog("\nValid iClass Tag (or PicoPass Tag) Found - Quiting Search\n");
+ return ans;
+ }
+ ans = HF15Reader("", false);
+ if (ans) {
+ PrintAndLog("\nValid ISO15693 Tag Found - Quiting Search\n");
+ return ans;
+ }
+ //14b is longest test currently (and rarest chip type) ... put last
+ ans = HF14BInfo(false);
+ if (ans) {
+ PrintAndLog("\nValid ISO14443B Tag Found - Quiting Search\n");
+ return ans;
+ }
+ PrintAndLog("\nno known/supported 13.56 MHz tags found\n");
+ return 0;
+}
+
+int CmdHFSnoop(const char *Cmd)
+{
+ char * pEnd;
+ UsbCommand c = {CMD_HF_SNIFFER, {strtol(Cmd, &pEnd,0),strtol(pEnd, &pEnd,0),0}};
+ SendCommand(&c);
+ return 0;
+}
+
projects / proxmark3-svn / blobdiff