//-----------------------------------------------------------------------------
// 2011, Merlok
// 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 <unistd.h>
#include "util.h"
#include "iso14443crc.h"
#include "data.h"
#include "proxusb.h"
#include "ui.h"
#include "cmdparser.h"
#include "cmdhf14a.h"
#include "common.h"
#include "cmdmain.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 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 = (iso14a_card_select_t *)(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]);
switch (card->sak) {
case 0x00: PrintAndLog(" SAK : NXP MIFARE Ultralight | Ultralight C"); break;
case 0x04: PrintAndLog(" SAK : NXP MIFARE (various !DESFire !DESFire EV1)"); break;
case 0x08: PrintAndLog(" SAK : NXP MIFARE CLASSIC 1k | Plus 2k"); break;
case 0x09: PrintAndLog(" SAK : NXP MIFARE Mini 0.3k"); break;
case 0x10: PrintAndLog(" SAK : NXP MIFARE Plus 2k"); break;
case 0x11: PrintAndLog(" SAK : NXP MIFARE Plus 4k"); break;
case 0x18: PrintAndLog(" SAK : NXP MIFARE Classic 4k | Plus 4k"); break;
case 0x20: PrintAndLog(" SAK : NXP MIFARE DESFire 4k | DESFire EV1 2k/4k/8k | Plus 2k/4k | JCOP 31/41"); break;
case 0x24: PrintAndLog(" SAK : NXP MIFARE DESFire | DESFire EV1"); break;
case 0x28: PrintAndLog(" SAK : JCOP31 or JCOP41 v2.3.1"); break;
case 0x38: PrintAndLog(" SAK : Nokia 6212 or 6131 MIFARE CLASSIC 4K"); break;
case 0x88: PrintAndLog(" SAK : Infineon MIFARE CLASSIC 1K"); break;
case 0x98: PrintAndLog(" SAK : Gemplus MPCOS"); break;
default: ;
}
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"},
{"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)
{
// flush
while (WaitForResponseTimeout(CMD_ACK, 500) != NULL) ;
// parse
CmdsParse(CommandTable, Cmd);
return 0;
}
int CmdHelp(const char *Cmd)
{
CmdsHelp(CommandTable);
return 0;
}