--- /dev/null
+//-----------------------------------------------------------------------------
+// Copyright (C) 2010 iZsh <izsh at fail0verflow.com>, Hagen Fritsch
+// Copyright (C) 2011 Gerhard de Koning Gans
+//
+// This code is licensed to you under the terms of the GNU GPL, version 2 or,
+// at your option, any later version. See the LICENSE.txt file for the text of
+// the license.
+//-----------------------------------------------------------------------------
+// High frequency iClass commands
+//-----------------------------------------------------------------------------
+
+#include <stdio.h>
+#include <stdlib.h>
+#include <string.h>
+#include "iso14443crc.h" // Can also be used for iClass, using 0xE012 as CRC-type
+#include "data.h"
+#include "proxusb.h"
+#include "ui.h"
+#include "cmdparser.h"
+#include "cmdhficlass.h"
+#include "common.h"
+
+static int CmdHelp(const char *Cmd);
+
+int CmdHFiClassList(const char *Cmd)
+{
+ uint8_t got[1920];
+ GetFromBigBuf(got, sizeof(got));
+
+ PrintAndLog("recorded activity:");
+ PrintAndLog(" ETU :rssi: who bytes");
+ PrintAndLog("---------+----+----+-----------");
+
+ int i = 0;
+ int prev = -1;
+
+ for (;;) {
+ if(i >= 1900) {
+ break;
+ }
+
+ bool isResponse;
+ int timestamp = *((uint32_t *)(got+i));
+ if (timestamp & 0x80000000) {
+ timestamp &= 0x7fffffff;
+ isResponse = 1;
+ } else {
+ isResponse = 0;
+ }
+
+ int metric = 0;
+ int parityBits = *((uint32_t *)(got+i+4));
+ // 4 bytes of additional information...
+ // maximum of 32 additional parity bit information
+ //
+ // TODO:
+ // at each quarter bit period we can send power level (16 levels)
+ // or each half bit period in 256 levels.
+
+
+ int len = got[i+8];
+
+ if (len > 100) {
+ break;
+ }
+ if (i + len >= 1900) {
+ break;
+ }
+
+ uint8_t *frame = (got+i+9);
+
+ // Break and stick with current result if buffer was not completely full
+ if (frame[0] == 0x44 && frame[1] == 0x44 && frame[3] == 0x44) { break; }
+
+ char line[1000] = "";
+ int j;
+ for (j = 0; j < len; j++) {
+ int oddparity = 0x01;
+ int k;
+
+ for (k=0;k<8;k++) {
+ oddparity ^= (((frame[j] & 0xFF) >> k) & 0x01);
+ }
+
+ //if((parityBits >> (len - j - 1)) & 0x01) {
+ if (isResponse && (oddparity != ((parityBits >> (len - j - 1)) & 0x01))) {
+ sprintf(line+(j*4), "%02x! ", frame[j]);
+ }
+ else {
+ sprintf(line+(j*4), "%02x ", frame[j]);
+ }
+ }
+
+ char *crc;
+ crc = "";
+ if (len > 2) {
+ uint8_t b1, b2;
+ for (j = 0; j < (len - 1); j++) {
+ // gives problems... search for the reason..
+ /*if(frame[j] == 0xAA) {
+ switch(frame[j+1]) {
+ case 0x01:
+ crc = "[1] Two drops close after each other";
+ break;
+ case 0x02:
+ crc = "[2] Potential SOC with a drop in second half of bitperiod";
+ break;
+ case 0x03:
+ crc = "[3] Segment Z after segment X is not possible";
+ break;
+ case 0x04:
+ crc = "[4] Parity bit of a fully received byte was wrong";
+ break;
+ default:
+ crc = "[?] Unknown error";
+ break;
+ }
+ break;
+ }*/
+ }
+
+ if (strlen(crc)==0) {
+ if(!isResponse && 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], len-3, &b1, &b2);
+ }
+ else {
+ // For other data.. CRC might not be applicable (UPDATE commands etc.)
+ ComputeCrc14443(CRC_ICLASS, frame, len-2, &b1, &b2);
+ }
+ //printf("%1x %1x",(unsigned)b1,(unsigned)b2);
+ if (b1 != frame[len-2] || b2 != frame[len-1]) {
+ crc = (isResponse & (len < 8)) ? "" : " !crc";
+ } else {
+ crc = "";
+ }
+ }
+ } else {
+ crc = ""; // SHORT
+ }
+
+ char metricString[100];
+ if (isResponse) {
+ sprintf(metricString, "%3d", metric);
+ } else {
+ strcpy(metricString, " ");
+ }
+
+ PrintAndLog(" +%7d: %s: %s %s %s",
+ (prev < 0 ? 0 : (timestamp - prev)),
+ metricString,
+ (isResponse ? "TAG" : " "), line, crc);
+
+ prev = timestamp;
+ i += (len + 9);
+ }
+ return 0;
+}
+
+/*void iso14a_set_timeout(uint32_t timeout) {
+ UsbCommand c = {CMD_READER_ISO_14443a, {ISO14A_SET_TIMEOUT, 0, timeout}};
+ SendCommand(&c);
+}*/
+
+int CmdHFiClassSnoop(const char *Cmd)
+{
+ UsbCommand c = {CMD_SNOOP_ICLASS};
+ SendCommand(&c);
+ return 0;
+}
+
+static command_t CommandTable[] =
+{
+ {"help", CmdHelp, 1, "This help"},
+ {"list", CmdHFiClassList, 0, "List iClass history"},
+ {"snoop", CmdHFiClassSnoop, 0, "Eavesdrop iClass communication"},
+ {NULL, NULL, 0, NULL}
+};
+
+int CmdHFiClass(const char *Cmd)
+{
+ CmdsParse(CommandTable, Cmd);
+ return 0;
+}
+
+int CmdHelp(const char *Cmd)
+{
+ CmdsHelp(CommandTable);
+ return 0;
+}