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248 lines
6.6 KiB
C
248 lines
6.6 KiB
C
//-----------------------------------------------------------------------------
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// 2011, Merlok
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// Copyright (C) 2010 iZsh <izsh at fail0verflow.com>, Hagen Fritsch
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//
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// This code is licensed to you under the terms of the GNU GPL, version 2 or,
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// at your option, any later version. See the LICENSE.txt file for the text of
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// the license.
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//-----------------------------------------------------------------------------
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// High frequency ISO14443A commands
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//-----------------------------------------------------------------------------
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#include <stdio.h>
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#include <stdlib.h>
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#include <string.h>
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#include <unistd.h>
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#include "util.h"
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#include "iso14443crc.h"
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#include "data.h"
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#include "proxusb.h"
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#include "ui.h"
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#include "cmdparser.h"
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#include "cmdhf14a.h"
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#include "common.h"
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#include "cmdmain.h"
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static int CmdHelp(const char *Cmd);
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int CmdHF14AList(const char *Cmd)
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{
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uint8_t got[1920];
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GetFromBigBuf(got, sizeof(got));
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PrintAndLog("recorded activity:");
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PrintAndLog(" ETU :rssi: who bytes");
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PrintAndLog("---------+----+----+-----------");
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int i = 0;
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int prev = -1;
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for (;;) {
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if(i >= 1900) {
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break;
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}
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bool isResponse;
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int timestamp = *((uint32_t *)(got+i));
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if (timestamp & 0x80000000) {
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timestamp &= 0x7fffffff;
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isResponse = 1;
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} else {
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isResponse = 0;
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}
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int metric = 0;
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int parityBits = *((uint32_t *)(got+i+4));
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// 4 bytes of additional information...
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// maximum of 32 additional parity bit information
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//
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// TODO:
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// at each quarter bit period we can send power level (16 levels)
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// or each half bit period in 256 levels.
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int len = got[i+8];
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if (len > 100) {
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break;
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}
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if (i + len >= 1900) {
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break;
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}
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uint8_t *frame = (got+i+9);
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// Break and stick with current result if buffer was not completely full
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if (frame[0] == 0x44 && frame[1] == 0x44 && frame[3] == 0x44) { break; }
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char line[1000] = "";
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int j;
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for (j = 0; j < len; j++) {
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int oddparity = 0x01;
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int k;
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for (k=0;k<8;k++) {
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oddparity ^= (((frame[j] & 0xFF) >> k) & 0x01);
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}
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//if((parityBits >> (len - j - 1)) & 0x01) {
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if (isResponse && (oddparity != ((parityBits >> (len - j - 1)) & 0x01))) {
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sprintf(line+(j*4), "%02x! ", frame[j]);
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}
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else {
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sprintf(line+(j*4), "%02x ", frame[j]);
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}
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}
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char *crc;
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crc = "";
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if (len > 2) {
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uint8_t b1, b2;
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for (j = 0; j < (len - 1); j++) {
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// gives problems... search for the reason..
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/*if(frame[j] == 0xAA) {
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switch(frame[j+1]) {
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case 0x01:
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crc = "[1] Two drops close after each other";
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break;
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case 0x02:
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crc = "[2] Potential SOC with a drop in second half of bitperiod";
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break;
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case 0x03:
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crc = "[3] Segment Z after segment X is not possible";
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break;
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case 0x04:
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crc = "[4] Parity bit of a fully received byte was wrong";
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break;
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default:
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crc = "[?] Unknown error";
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break;
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}
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break;
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}*/
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}
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if (strlen(crc)==0) {
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ComputeCrc14443(CRC_14443_A, frame, len-2, &b1, &b2);
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if (b1 != frame[len-2] || b2 != frame[len-1]) {
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crc = (isResponse & (len < 6)) ? "" : " !crc";
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} else {
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crc = "";
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}
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}
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} else {
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crc = ""; // SHORT
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}
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char metricString[100];
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if (isResponse) {
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sprintf(metricString, "%3d", metric);
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} else {
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strcpy(metricString, " ");
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}
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PrintAndLog(" +%7d: %s: %s %s %s",
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(prev < 0 ? 0 : (timestamp - prev)),
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metricString,
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(isResponse ? "TAG" : " "), line, crc);
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prev = timestamp;
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i += (len + 9);
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}
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return 0;
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}
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void iso14a_set_timeout(uint32_t timeout) {
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UsbCommand c = {CMD_READER_ISO_14443a, {ISO14A_SET_TIMEOUT, 0, timeout}};
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SendCommand(&c);
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}
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int CmdHF14AReader(const char *Cmd)
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{
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UsbCommand c = {CMD_READER_ISO_14443a, {ISO14A_CONNECT, 0, 0}};
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SendCommand(&c);
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UsbCommand * resp = WaitForResponse(CMD_ACK);
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uint8_t * uid = resp->d.asBytes;
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iso14a_card_select_t * card = (iso14a_card_select_t *)(uid + 12);
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if(resp->arg[0] == 0) {
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PrintAndLog("iso14443a card select failed");
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return 0;
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}
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PrintAndLog("ATQA : %02x %02x", card->atqa[0], card->atqa[1]);
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PrintAndLog(" UID : %s", sprint_hex(uid, 12));
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PrintAndLog(" SAK : %02x [%d]", card->sak, resp->arg[0]);
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switch (card->sak) {
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case 0x00: PrintAndLog(" SAK : MIFARE ultralight?"); break;
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case 0x08: PrintAndLog(" SAK : MIFARE CLASSIC 1K"); break;
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case 0x09: PrintAndLog(" SAK : MIFARE MINI"); break;
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case 0x10: PrintAndLog(" SAK : MIFARE PLUS 1k"); break;
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case 0x11: PrintAndLog(" SAK : MIFARE PLUS 4k"); break;
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case 0x18: PrintAndLog(" SAK : MIFARE CLASSIC 4K"); break;
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case 0x20: PrintAndLog(" SAK : MIFARE DESFIRE | PLUS | JCOP 31/41"); break;
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case 0x28: PrintAndLog(" SAK : JCOP31 or JCOP41 v2.3.1"); break;
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case 0x38: PrintAndLog(" SAK : Nokia 6212 or 6131 MIFARE CLASSIC 4K"); break;
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case 0x88: PrintAndLog(" SAK : Infineon MIFARE CLASSIC 1K"); break;
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case 0x98: PrintAndLog(" SAK : Gemplus MPCOS"); break;
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default: ;
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}
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if(resp->arg[0] == 1)
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PrintAndLog(" ATS : %s", sprint_hex(card->ats, card->ats_len));
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else
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PrintAndLog("proprietary non-iso14443a card found, RATS not supported");
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return resp->arg[0];
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}
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// ## simulate iso14443a tag
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// ## greg - added ability to specify tag UID
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int CmdHF14ASim(const char *Cmd)
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{
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unsigned int hi = 0, lo = 0;
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int n = 0, i = 0;
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while (sscanf(&Cmd[i++], "%1x", &n ) == 1) {
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hi= (hi << 4) | (lo >> 28);
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lo= (lo << 4) | (n & 0xf);
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}
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// c.arg should be set to *Cmd or convert *Cmd to the correct format for a uid
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UsbCommand c = {CMD_SIMULATE_TAG_ISO_14443a, {hi, lo, 0}};
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PrintAndLog("Emulating 14443A TAG with UID %x%16x", hi, lo);
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SendCommand(&c);
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return 0;
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}
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int CmdHF14ASnoop(const char *Cmd)
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{
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UsbCommand c = {CMD_SNOOP_ISO_14443a};
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SendCommand(&c);
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return 0;
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}
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static command_t CommandTable[] =
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{
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{"help", CmdHelp, 1, "This help"},
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{"list", CmdHF14AList, 0, "List ISO 14443a history"},
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{"reader", CmdHF14AReader, 0, "Act like an ISO14443 Type A reader"},
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{"sim", CmdHF14ASim, 0, "<UID> -- Fake ISO 14443a tag"},
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{"snoop", CmdHF14ASnoop, 0, "Eavesdrop ISO 14443 Type A"},
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{NULL, NULL, 0, NULL}
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};
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int CmdHF14A(const char *Cmd)
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{
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// flush
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while (WaitForResponseTimeout(CMD_ACK, 500) != NULL) ;
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// parse
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CmdsParse(CommandTable, Cmd);
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return 0;
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}
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int CmdHelp(const char *Cmd)
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{
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CmdsHelp(CommandTable);
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return 0;
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}
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