mirror of
https://github.com/Proxmark/proxmark3.git
synced 2024-09-21 23:36:51 +08:00
178 lines
6.4 KiB
C
178 lines
6.4 KiB
C
//-----------------------------------------------------------------------------
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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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// Low frequency ioProx commands
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// FSK2a, rf/64, 64 bits (complete)
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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 <inttypes.h>
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#include <limits.h>
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#include "cmdlfio.h"
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#include "proxmark3.h"
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#include "data.h"
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#include "graph.h"
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#include "ui.h"
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#include "cmdparser.h"
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#include "cmdmain.h"
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#include "cmddata.h"
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#include "cmdlf.h"
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#include "lfdemod.h" //for IOdemodFSK + bytebits_to_byte
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#include "util.h" //for sprint_bin_break
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static int CmdHelp(const char *Cmd);
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int CmdIOReadFSK(const char *Cmd)
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{
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int findone=0;
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if(Cmd[0]=='1') findone=1;
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UsbCommand c={CMD_IO_DEMOD_FSK};
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c.arg[0]=findone;
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SendCommand(&c);
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return 0;
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}
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//by marshmellow
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//IO-Prox demod - FSK RF/64 with preamble of 000000001
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//print ioprox ID and some format details
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int CmdFSKdemodIO(const char *Cmd)
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{
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int idx=0;
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//something in graphbuffer?
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if (GraphTraceLen < 65) {
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if (g_debugMode)PrintAndLog("DEBUG: not enough samples in GraphBuffer");
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return 0;
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}
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uint8_t BitStream[MAX_GRAPH_TRACE_LEN]={0};
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size_t BitLen = getFromGraphBuf(BitStream);
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if (BitLen==0) return 0;
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int waveIdx = 0;
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//get binary from fsk wave
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idx = IOdemodFSK(BitStream,BitLen, &waveIdx);
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if (idx<0){
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if (g_debugMode){
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if (idx==-1){
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PrintAndLog("DEBUG: Just Noise Detected");
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} else if (idx == -2) {
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PrintAndLog("DEBUG: not enough samples");
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} else if (idx == -3) {
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PrintAndLog("DEBUG: error during fskdemod");
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} else if (idx == -4) {
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PrintAndLog("DEBUG: Preamble not found");
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} else if (idx == -5) {
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PrintAndLog("DEBUG: Separator bits not found");
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} else {
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PrintAndLog("DEBUG: Error demoding fsk %d", idx);
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}
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}
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return 0;
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}
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if (idx==0){
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if (g_debugMode){
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PrintAndLog("DEBUG: IO Prox Data not found - FSK Bits: %d",BitLen);
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if (BitLen > 92) PrintAndLog("%s", sprint_bin_break(BitStream,92,16));
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}
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return 0;
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}
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//Index map
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//0 10 20 30 40 50 60
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//| | | | | | |
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//01234567 8 90123456 7 89012345 6 78901234 5 67890123 4 56789012 3 45678901 23
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//-----------------------------------------------------------------------------
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//00000000 0 11110000 1 facility 1 version* 1 code*one 1 code*two 1 ???????? 11
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//
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//XSF(version)facility:codeone+codetwo (raw)
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//Handle the data
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if (idx+64>BitLen) {
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if (g_debugMode) PrintAndLog("not enough bits found - bitlen: %d",BitLen);
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return 0;
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}
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PrintAndLog("%d%d%d%d%d%d%d%d %d",BitStream[idx], BitStream[idx+1], BitStream[idx+2], BitStream[idx+3], BitStream[idx+4], BitStream[idx+5], BitStream[idx+6], BitStream[idx+7], BitStream[idx+8]);
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PrintAndLog("%d%d%d%d%d%d%d%d %d",BitStream[idx+9], BitStream[idx+10], BitStream[idx+11],BitStream[idx+12],BitStream[idx+13],BitStream[idx+14],BitStream[idx+15],BitStream[idx+16],BitStream[idx+17]);
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PrintAndLog("%d%d%d%d%d%d%d%d %d facility",BitStream[idx+18], BitStream[idx+19], BitStream[idx+20],BitStream[idx+21],BitStream[idx+22],BitStream[idx+23],BitStream[idx+24],BitStream[idx+25],BitStream[idx+26]);
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PrintAndLog("%d%d%d%d%d%d%d%d %d version",BitStream[idx+27], BitStream[idx+28], BitStream[idx+29],BitStream[idx+30],BitStream[idx+31],BitStream[idx+32],BitStream[idx+33],BitStream[idx+34],BitStream[idx+35]);
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PrintAndLog("%d%d%d%d%d%d%d%d %d code1",BitStream[idx+36], BitStream[idx+37], BitStream[idx+38],BitStream[idx+39],BitStream[idx+40],BitStream[idx+41],BitStream[idx+42],BitStream[idx+43],BitStream[idx+44]);
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PrintAndLog("%d%d%d%d%d%d%d%d %d code2",BitStream[idx+45], BitStream[idx+46], BitStream[idx+47],BitStream[idx+48],BitStream[idx+49],BitStream[idx+50],BitStream[idx+51],BitStream[idx+52],BitStream[idx+53]);
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PrintAndLog("%d%d%d%d%d%d%d%d %d%d checksum",BitStream[idx+54],BitStream[idx+55],BitStream[idx+56],BitStream[idx+57],BitStream[idx+58],BitStream[idx+59],BitStream[idx+60],BitStream[idx+61],BitStream[idx+62],BitStream[idx+63]);
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uint32_t code = bytebits_to_byte(BitStream+idx,32);
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uint32_t code2 = bytebits_to_byte(BitStream+idx+32,32);
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uint8_t version = bytebits_to_byte(BitStream+idx+27,8); //14,4
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uint8_t facilitycode = bytebits_to_byte(BitStream+idx+18,8) ;
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uint16_t number = (bytebits_to_byte(BitStream+idx+36,8)<<8)|(bytebits_to_byte(BitStream+idx+45,8)); //36,9
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uint8_t crc = bytebits_to_byte(BitStream+idx+54,8);
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uint16_t calccrc = 0;
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for (uint8_t i=1; i<6; ++i){
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calccrc += bytebits_to_byte(BitStream+idx+9*i,8);
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}
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calccrc &= 0xff;
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calccrc = 0xff - calccrc;
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char *crcStr = (crc == calccrc) ? "crc ok": "!crc";
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PrintAndLog("IO Prox XSF(%02d)%02x:%05d (%08x%08x) [%02x %s]",version,facilitycode,number,code,code2, crc, crcStr);
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setDemodBuf(BitStream,64,idx);
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setClockGrid(64, waveIdx + (idx*64));
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if (g_debugMode){
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PrintAndLog("DEBUG: idx: %d, Len: %d, Printing demod buffer:",idx,64);
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printDemodBuff();
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}
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return 1;
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}
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int CmdIOClone(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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UsbCommand c;
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//if (1 == sscanf(str, "0x%"SCNx32, &hi)) {
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// value now contains the value in the string--decimal 255, in this case.
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//}
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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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PrintAndLog("Cloning tag with ID %08x %08x", hi, lo);
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PrintAndLog("Press pm3-button to abort simulation");
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c.cmd = CMD_IO_CLONE_TAG;
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c.arg[0] = hi;
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c.arg[1] = lo;
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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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{"demod", CmdFSKdemodIO, 1, "Demodulate IO Prox tag from the GraphBuffer"},
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{"read", CmdIOReadFSK, 0, "['1'] Realtime IO FSK demodulate from antenna (option '1' for one tag only)"},
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{"clone", CmdIOClone, 0, "Clone ioProx Tag"},
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{NULL, NULL, 0, NULL}
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};
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int CmdLFIO(const char *Cmd)
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{
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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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