[proxmark3-svn] / client / cmdhf14a.c

//-----------------------------------------------------------------------------
// Copyright (C) 2010 iZsh <izsh at fail0verflow.com>, Hagen Fritsch
//
// 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 ISO14443A commands
//-----------------------------------------------------------------------------

#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include "iso14443crc.h"
#include "data.h"
#include "proxusb.h"
#include "ui.h"
#include "cmdparser.h"
#include "cmdhf14a.h"
#include "common.h"

static int CmdHelp(const char *Cmd);

int CmdHF14AList(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) {
        ComputeCrc14443(CRC_14443_A, frame, len-2, &b1, &b2);
        if (b1 != frame[len-2] || b2 != frame[len-1]) {
          crc = (isResponse & (len < 6)) ? "" : " !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 CmdHF14AMifare(const char *Cmd)
{
  UsbCommand c = {CMD_READER_MIFARE, {strtol(Cmd, NULL, 0), 0, 0}};
  SendCommand(&c);
  return 0;
}

int CmdHF14AReader(const char *Cmd)
{
	UsbCommand c = {CMD_READER_ISO_14443a, {ISO14A_CONNECT, 0, 0}};
	SendCommand(&c);
	UsbCommand * resp = WaitForResponse(CMD_ACK);
	uint8_t              * uid  = resp->d.asBytes;
	iso14a_card_select_t * card = uid + 12;

	if(resp->arg[0] == 0) {
		PrintAndLog("iso14443a card select failed");
		return 0;
	}

	PrintAndLog("ATQA : %02x %02x", card->atqa[0], card->atqa[1]);
	PrintAndLog(" UID : %s", sprint_hex(uid, 12));
	PrintAndLog(" SAK : %02x [%d]", card->sak, resp->arg[0]);
	if(resp->arg[0] == 1)
		PrintAndLog(" ATS : %s", sprint_hex(card->ats, card->ats_len));
	else
		PrintAndLog("proprietary non-iso14443a card found, RATS not supported");

	return resp->arg[0];
}

// ## simulate iso14443a tag
// ## greg - added ability to specify tag UID
int CmdHF14ASim(const char *Cmd)
{                                 

  unsigned int hi = 0, lo = 0;
  int n = 0, i = 0;
  while (sscanf(&Cmd[i++], "%1x", &n ) == 1) {
    hi= (hi << 4) | (lo >> 28);
    lo= (lo << 4) | (n & 0xf);
  }

  // c.arg should be set to *Cmd or convert *Cmd to the correct format for a uid
  UsbCommand c = {CMD_SIMULATE_TAG_ISO_14443a, {hi, lo, 0}};
  PrintAndLog("Emulating 14443A TAG with UID %x%16x", hi, lo);
  SendCommand(&c);
  return 0;
}

int CmdHF14ASnoop(const char *Cmd)
{
  UsbCommand c = {CMD_SNOOP_ISO_14443a};
  SendCommand(&c);
  return 0;
}

static command_t CommandTable[] = 
{
  {"help",    CmdHelp,        1, "This help"},
  {"list",    CmdHF14AList,   0, "List ISO 14443a history"},
  {"mifare",  CmdHF14AMifare, 0, "Read out sector 0 parity error messages"},
  {"reader",  CmdHF14AReader, 0, "Act like an ISO14443 Type A reader"},
  {"sim",     CmdHF14ASim,    0, "<UID> -- Fake ISO 14443a tag"},
  {"snoop",   CmdHF14ASnoop,  0, "Eavesdrop ISO 14443 Type A"},
  {NULL, NULL, 0, NULL}
};

int CmdHF14A(const char *Cmd)
{
  CmdsParse(CommandTable, Cmd);
  return 0;
}

int CmdHelp(const char *Cmd)
{
  CmdsHelp(CommandTable);
  return 0;
}
Commit	Line	Data
a553f267	1	//-----------------------------------------------------------------------------
534983d7	2	// Copyright (C) 2010 iZsh <izsh at fail0verflow.com>, Hagen Fritsch
a553f267	3	//
	4	// This code is licensed to you under the terms of the GNU GPL, version 2 or,
	5	// at your option, any later version. See the LICENSE.txt file for the text of
	6	// the license.
	7	//-----------------------------------------------------------------------------
	8	// High frequency ISO14443A commands
	9	//-----------------------------------------------------------------------------
	10
7fe9b0b7	11	#include <stdio.h>
590f8ff9	12	#include <stdlib.h>
7fe9b0b7	13	#include <string.h>
	14	#include "iso14443crc.h"
	15	#include "data.h"
	16	#include "proxusb.h"
	17	#include "ui.h"
	18	#include "cmdparser.h"
	19	#include "cmdhf14a.h"
534983d7	20	#include "common.h"
7fe9b0b7	21
	22	static int CmdHelp(const char *Cmd);
	23
	24	int CmdHF14AList(const char *Cmd)
	25	{
	26	uint8_t got[1920];
	27	GetFromBigBuf(got, sizeof(got));
	28
	29	PrintAndLog("recorded activity:");
	30	PrintAndLog(" ETU :rssi: who bytes");
	31	PrintAndLog("---------+----+----+-----------");
	32
	33	int i = 0;
	34	int prev = -1;
	35
	36	for (;;) {
	37	if(i >= 1900) {
	38	break;
	39	}
	40
	41	bool isResponse;
	42	int timestamp = ((uint32_t )(got+i));
	43	if (timestamp & 0x80000000) {
	44	timestamp &= 0x7fffffff;
	45	isResponse = 1;
	46	} else {
	47	isResponse = 0;
	48	}
	49
	50	int metric = 0;
	51	int parityBits = ((uint32_t )(got+i+4));
	52	// 4 bytes of additional information...
	53	// maximum of 32 additional parity bit information
	54	//
	55	// TODO:
	56	// at each quarter bit period we can send power level (16 levels)
	57	// or each half bit period in 256 levels.
	58
	59
	60	int len = got[i+8];
	61
	62	if (len > 100) {
	63	break;
	64	}
	65	if (i + len >= 1900) {
	66	break;
	67	}
	68
	69	uint8_t *frame = (got+i+9);
	70
	71	// Break and stick with current result if buffer was not completely full
	72	if (frame[0] == 0x44 && frame[1] == 0x44 && frame[3] == 0x44) { break; }
	73
	74	char line[1000] = "";
	75	int j;
	76	for (j = 0; j < len; j++) {
	77	int oddparity = 0x01;
	78	int k;
	79
	80	for (k=0;k<8;k++) {
	81	oddparity ^= (((frame[j] & 0xFF) >> k) & 0x01);
	82	}
	83
	84	//if((parityBits >> (len - j - 1)) & 0x01) {
85	if (isResponse && (oddparity != ((parityBits >> (len - j - 1)) & 0x01))) {
86	sprintf(line+(j*4), "%02x! ", frame[j]);
87	}
88	else {
89	sprintf(line+(j*4), "%02x ", frame[j]);
90	}
91	}
92
93	char *crc;
94	crc = "";
95	if (len > 2) {
96	uint8_t b1, b2;
97	for (j = 0; j < (len - 1); j++) {
98	// gives problems... search for the reason..
99	/*if(frame[j] == 0xAA) {
100	switch(frame[j+1]) {
101	case 0x01:
102	crc = "[1] Two drops close after each other";
103	break;
104	case 0x02:
105	crc = "[2] Potential SOC with a drop in second half of bitperiod";
106	break;
107	case 0x03:
108	crc = "[3] Segment Z after segment X is not possible";
109	break;
110	case 0x04:
111	crc = "[4] Parity bit of a fully received byte was wrong";
112	break;
113	default:
114	crc = "[?] Unknown error";
115	break;
116	}
117	break;
118	}*/
119	}
120
121	if (strlen(crc)==0) {
122	ComputeCrc14443(CRC_14443_A, frame, len-2, &b1, &b2);
123	if (b1 != frame[len-2] \|\| b2 != frame[len-1]) {
124	crc = (isResponse & (len < 6)) ? "" : " !crc";
125	} else {
126	crc = "";
127	}
128	}
129	} else {
130	crc = ""; // SHORT
131	}
132
133	char metricString[100];
134	if (isResponse) {
135	sprintf(metricString, "%3d", metric);
136	} else {
137	strcpy(metricString, " ");
138	}
139
140	PrintAndLog(" +%7d: %s: %s %s %s",
141	(prev < 0 ? 0 : (timestamp - prev)),
142	metricString,
143	(isResponse ? "TAG" : " "), line, crc);
144
145	prev = timestamp;
146	i += (len + 9);
147	}
148	return 0;
149	}
150
534983d7	151	void iso14a_set_timeout(uint32_t timeout) {
	152	UsbCommand c = {CMD_READER_ISO_14443a, {ISO14A_SET_TIMEOUT, 0, timeout}};
	153	SendCommand(&c);
	154	}
	155
7fe9b0b7	156	int CmdHF14AMifare(const char *Cmd)
	157	{
	158	UsbCommand c = {CMD_READER_MIFARE, {strtol(Cmd, NULL, 0), 0, 0}};
	159	SendCommand(&c);
	160	return 0;
	161	}
	162
	163	int CmdHF14AReader(const char *Cmd)
	164	{
534983d7	165	UsbCommand c = {CMD_READER_ISO_14443a, {ISO14A_CONNECT, 0, 0}};
	166	SendCommand(&c);
	167	UsbCommand * resp = WaitForResponse(CMD_ACK);
	168	uint8_t * uid = resp->d.asBytes;
	169	iso14a_card_select_t * card = uid + 12;
	170
	171	if(resp->arg[0] == 0) {
	172	PrintAndLog("iso14443a card select failed");
	173	return 0;
	174	}
	175
	176	PrintAndLog("ATQA : %02x %02x", card->atqa[0], card->atqa[1]);
	177	PrintAndLog(" UID : %s", sprint_hex(uid, 12));
	178	PrintAndLog(" SAK : %02x [%d]", card->sak, resp->arg[0]);
	179	if(resp->arg[0] == 1)
	180	PrintAndLog(" ATS : %s", sprint_hex(card->ats, card->ats_len));
	181	else
	182	PrintAndLog("proprietary non-iso14443a card found, RATS not supported");
	183
	184	return resp->arg[0];
7fe9b0b7	185	}
	186
	187	// ## simulate iso14443a tag
	188	// ## greg - added ability to specify tag UID
	189	int CmdHF14ASim(const char *Cmd)
	190	{
	191
	192	unsigned int hi = 0, lo = 0;
	193	int n = 0, i = 0;
	194	while (sscanf(&Cmd[i++], "%1x", &n ) == 1) {
	195	hi= (hi << 4) \| (lo >> 28);
	196	lo= (lo << 4) \| (n & 0xf);
	197	}
	198
	199	// c.arg should be set to Cmd or convert Cmd to the correct format for a uid
	200	UsbCommand c = {CMD_SIMULATE_TAG_ISO_14443a, {hi, lo, 0}};
	201	PrintAndLog("Emulating 14443A TAG with UID %x%16x", hi, lo);
	202	SendCommand(&c);
	203	return 0;
	204	}
	205
	206	int CmdHF14ASnoop(const char *Cmd)
	207	{
	208	UsbCommand c = {CMD_SNOOP_ISO_14443a};
	209	SendCommand(&c);
	210	return 0;
	211	}
	212
	213	static command_t CommandTable[] =
	214	{
	215	{"help", CmdHelp, 1, "This help"},
	216	{"list", CmdHF14AList, 0, "List ISO 14443a history"},
	217	{"mifare", CmdHF14AMifare, 0, "Read out sector 0 parity error messages"},
	218	{"reader", CmdHF14AReader, 0, "Act like an ISO14443 Type A reader"},
	219	{"sim", CmdHF14ASim, 0, "<UID> -- Fake ISO 14443a tag"},
	220	{"snoop", CmdHF14ASnoop, 0, "Eavesdrop ISO 14443 Type A"},
	221	{NULL, NULL, 0, NULL}
	222	};
	223
	224	int CmdHF14A(const char *Cmd)
	225	{
	226	CmdsParse(CommandTable, Cmd);
	227	return 0;
	228	}
	229
	230	int CmdHelp(const char *Cmd)
	231	{
	232	CmdsHelp(CommandTable);
	233	return 0;
	234	}