]> git.zerfleddert.de Git - proxmark3-svn/blobdiff - client/cmdhf.c
Merge pull request #3 from Proxmark/master
[proxmark3-svn] / client / cmdhf.c
index 0ed3de1a8eea43a4ba11a38ad02a7b56ef1b4691..85cc542583d3339b79584518f654d5c3f6b40766 100644 (file)
@@ -9,7 +9,9 @@
 //-----------------------------------------------------------------------------
 
 #include <stdio.h>
-#include "proxusb.h"
+#include <string.h>
+//#include "proxusb.h"
+#include "proxmark3.h"
 #include "graph.h"
 #include "ui.h"
 #include "cmdparser.h"
@@ -30,6 +32,279 @@ int CmdHFTune(const char *Cmd)
   SendCommand(&c);
   return 0;
 }
+// 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("    14a    - 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;
+}
+
 
 static command_t CommandTable[] = 
 {
@@ -40,9 +315,10 @@ static command_t CommandTable[] =
   {"epa",         CmdHFEPA,         1, "{ German Identification Card... }"},
   {"legic",       CmdHFLegic,       0, "{ LEGIC RFIDs... }"},
   {"iclass",      CmdHFiClass,      1, "{ ICLASS RFIDs... }"},
-  {"mf",               CmdHFMF,                      1, "{ MIFARE RFIDs... }"},
+  {"mf",               CmdHFMF,                1, "{ MIFARE RFIDs... }"},
   {"tune",        CmdHFTune,        0, "Continuously measure HF antenna tuning"},
-  {NULL, NULL, 0, NULL}
+  {"list",       CmdHFList,         1, "List protocol data in trace buffer"},
+       {NULL, NULL, 0, NULL}
 };
 
 int CmdHF(const char *Cmd)
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