[proxmark3-svn] / client / cmdhflegic.c

//-----------------------------------------------------------------------------
// Copyright (C) 2010 iZsh <izsh at fail0verflow.com>
//
// 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 Legic commands
//-----------------------------------------------------------------------------

#include <stdio.h>
#include <string.h>
//#include "proxusb.h"
#include "proxmark3.h"
#include "data.h"
#include "ui.h"
#include "cmdparser.h"
#include "cmdhflegic.h"
#include "cmdmain.h"

static int CmdHelp(const char *Cmd);

static command_t CommandTable[] = 
{
  {"help",        CmdHelp,        1, "This help"},
  {"decode",      CmdLegicDecode, 0, "Display deobfuscated and decoded LEGIC RF tag data (use after hf legic reader)"},
  {"reader",      CmdLegicRFRead, 0, "[offset [length]] -- read bytes from a LEGIC card"},
  {"save",        CmdLegicSave,   0, "<filename> [<length>] -- Store samples"},
  {"load",        CmdLegicLoad,   0, "<filename> -- Restore samples"},
  {"sim",         CmdLegicRfSim,  0, "[phase drift [frame drift [req/resp drift]]] Start tag simulator (use after load or read)"},
  {"write",       CmdLegicRfWrite,0, "<offset> <length> -- Write sample buffer (user after load or read)"},
  {"fill",        CmdLegicRfFill, 0, "<offset> <length> <value> -- Fill/Write tag with constant value"},
  {NULL, NULL, 0, NULL}
};

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

int CmdHelp(const char *Cmd)
{
  CmdsHelp(CommandTable);
  return 0;
}

/*
 *  Output BigBuf and deobfuscate LEGIC RF tag data.
 *   This is based on information given in the talk held
 *  by Henryk Ploetz and Karsten Nohl at 26c3
 */
int CmdLegicDecode(const char *Cmd)
{
  int h, i, j, k, n;
  int segment_len = 0;
  int segment_flag = 0;
  int stamp_len = 0;
  int crc = 0;
  int wrp = 0;
  int wrc = 0;
  int data_buf[1032]; // receiver buffer
  char out_string[3076]; // just use big buffer - bad practice
  char token_type[4];
  int delivered = 0;

  h = 0;
  
  // copy data from proxmark into buffer
  for (i = 0; i < 256; i += 12, h += 48) {
    UsbCommand c = {CMD_DOWNLOAD_RAW_ADC_SAMPLES_125K, {i, 0, 0}};
    SendCommand(&c);
    WaitForResponse(CMD_DOWNLOADED_RAW_ADC_SAMPLES_125K, NULL);
    
    for (j = 0; j < 48; j += 8) {
      for (k = 0; k < 8; k++) {
        data_buf[h+j+k] = sample_buf[j+k];
      }
      delivered += 8;
      if (delivered >= 1024)
        break;
    }
  }
    
  // Output CDF System area (9 bytes) plus remaining header area (12 bytes)
  
  PrintAndLog("\nCDF: System Area");
  
  PrintAndLog("MCD: %02x, MSN: %02x %02x %02x, MCC: %02x",
    data_buf[0],
    data_buf[1],
    data_buf[2],
    data_buf[3],
    data_buf[4]
  );
  
  crc = data_buf[4];
 
  switch (data_buf[5]&0x7f) {
    case 0x00 ... 0x2f:
      strncpy(token_type, "IAM",sizeof(token_type));
      break;
    case 0x30 ... 0x6f:
      strcpy(token_type, "SAM");
      break;
    case 0x70 ... 0x7f:
      strcpy(token_type, "GAM");
      break;
    default:
      strcpy(token_type, "???");
      break;
  }
  
  stamp_len = 0xfc - data_buf[6];
  
  PrintAndLog("DCF: %02x %02x, Token_Type=%s (OLE=%01u), Stamp_len=%02u",
    data_buf[5],
    data_buf[6],
    token_type,
    (data_buf[5]&0x80)>>7,
    stamp_len
  );
  
  PrintAndLog("WRP=%02u, WRC=%01u, RD=%01u, raw=%02x, SSC=%02x",
    data_buf[7]&0x0f,
    (data_buf[7]&0x70)>>4,
    (data_buf[7]&0x80)>>7,
    data_buf[7],
    data_buf[8]
  );
  
  PrintAndLog("Remaining Header Area");
  
  PrintAndLog("%02x %02x %02x %02x %02x %02x %02x %02x %02x %02x %02x %02x %02x",
      data_buf[9],
    data_buf[10],
    data_buf[11],
    data_buf[12],
    data_buf[13],
    data_buf[14],
    data_buf[15],
    data_buf[16],
    data_buf[17],
    data_buf[18],
    data_buf[19],
    data_buf[20],
    data_buf[21]
  );
  
  PrintAndLog("\nADF: User Area");
  
  i = 22;  
  for (n=0; n<64; n++) {
    segment_len = ((data_buf[i+1]^crc)&0x0f) * 256 + (data_buf[i]^crc);
    segment_flag = ((data_buf[i+1]^crc)&0xf0)>>4;
    
    wrp = (data_buf[i+2]^crc);
    wrc = ((data_buf[i+3]^crc)&0x70)>>4;
    
     PrintAndLog("Segment %02u: raw header=%02x %02x %02x %02x, flag=%01x (valid=%01u, last=%01u), len=%04u, WRP=%02u, WRC=%02u, RD=%01u, CRC=%02x",
      n,
      data_buf[i]^crc,
      data_buf[i+1]^crc,
      data_buf[i+2]^crc,
      data_buf[i+3]^crc,
      segment_flag,
      (segment_flag&0x4)>>2,
      (segment_flag&0x8)>>3,
      segment_len,
      wrp,
      wrc,
      ((data_buf[i+3]^crc)&0x80)>>7,
      (data_buf[i+4]^crc)
    );
    
    i+=5;
    
    if (wrc>0) {
      PrintAndLog("WRC protected area:");
      for (k=0, j=0; k < wrc && j<(sizeof(out_string)-3); k++, i++, j += 3) {
        sprintf(&out_string[j], "%02x", (data_buf[i]^crc));
        out_string[j+2] = ' ';
      };
        
      out_string[j] = '\0';
    
      PrintAndLog("%s", out_string);
    }
    
    if (wrp>wrc) {
      PrintAndLog("Remaining write protected area:");
      
      for (k=0, j=0; k < (wrp-wrc) && j<(sizeof(out_string)-3); k++, i++, j += 3) {
        sprintf(&out_string[j], "%02x", (data_buf[i]^crc));
        out_string[j+2] = ' ';
      };
    
      out_string[j] = '\0';
    
      PrintAndLog("%s", out_string);
      if((wrp-wrc) == 8) {
        sprintf(out_string,"Card ID: %2X%02X%02X",data_buf[i-4]^crc,data_buf[i-3]^crc,data_buf[i-2]^crc);
        PrintAndLog("%s", out_string);
      }
    }
    
    PrintAndLog("Remaining segment payload:");
    for (k=0, j=0; k < (segment_len - wrp - 5) && j<(sizeof(out_string)-3); k++, i++, j += 3) {
      sprintf(&out_string[j], "%02x", (data_buf[i]^crc));
      out_string[j+2] = ' ';
    };
    
    out_string[j] = '\0';
    
    PrintAndLog("%s", out_string);
    
    // end with last segment
    if (segment_flag & 0x8)
      return 0;
  };
  return 0;
}

int CmdLegicRFRead(const char *Cmd)
{
  int byte_count=0,offset=0;
  sscanf(Cmd, "%i %i", &offset, &byte_count);
  if(byte_count == 0) byte_count = -1;
  if(byte_count + offset > 1024) byte_count = 1024 - offset;
  UsbCommand c={CMD_READER_LEGIC_RF, {offset, byte_count, 0}};
  SendCommand(&c);
  return 0;
}

int CmdLegicLoad(const char *Cmd)
{
    FILE *f = fopen(Cmd, "r");
    if(!f) {
        PrintAndLog("couldn't open '%s'", Cmd);
        return -1;
    }
    char line[80]; int offset = 0; unsigned int data[8];
    while(fgets(line, sizeof(line), f)) {
        int res = sscanf(line, "%x %x %x %x %x %x %x %x", 
            &data[0], &data[1], &data[2], &data[3],
            &data[4], &data[5], &data[6], &data[7]);
        if(res != 8) {
          PrintAndLog("Error: could not read samples");
          fclose(f);
          return -1;
        }
        UsbCommand c={CMD_DOWNLOADED_SIM_SAMPLES_125K, {offset, 0, 0}};
        int j; for(j = 0; j < 8; j++) {
            c.d.asBytes[j] = data[j];
        }
        SendCommand(&c);
        WaitForResponse(CMD_ACK, NULL);
        offset += 8;
    }
    fclose(f);
    PrintAndLog("loaded %u samples", offset);
    return 0;
}

int CmdLegicSave(const char *Cmd)
{
  int n;
  int requested = 1024;
  int offset = 0;
  char filename[1024];
  sscanf(Cmd, " %s %i %i", filename, &requested, &offset);
  if (offset % 4 != 0) {
    PrintAndLog("Offset must be a multiple of 4");
    return 0;
  }
  offset = offset/4;

  int delivered = 0;

  if (requested == 0) {
    n = 12;
    requested = 12;
  } else {
    n = requested/4;
  }

  FILE *f = fopen(filename, "w");
  if(!f) {
    PrintAndLog("couldn't open '%s'", Cmd+1);
    return -1;
  }

  for (int i = offset; i < n+offset; i += 12) {
    UsbCommand c = {CMD_DOWNLOAD_RAW_ADC_SAMPLES_125K, {i, 0, 0}};
    SendCommand(&c);
    WaitForResponse(CMD_DOWNLOADED_RAW_ADC_SAMPLES_125K, NULL);
    for (int j = 0; j < 48; j += 8) {
      fprintf(f, "%02x %02x %02x %02x %02x %02x %02x %02x\n",
        sample_buf[j+0],
        sample_buf[j+1],
        sample_buf[j+2],
        sample_buf[j+3],
        sample_buf[j+4],
        sample_buf[j+5],
        sample_buf[j+6],
        sample_buf[j+7]
      );
      delivered += 8;
      if (delivered >= requested)
        break;
    }
    if (delivered >= requested)
      break;
  }

  fclose(f);
  PrintAndLog("saved %u samples", delivered);
  return 0;
}

int CmdLegicRfSim(const char *Cmd)
{
   UsbCommand c={CMD_SIMULATE_TAG_LEGIC_RF};
   c.arg[0] = 6;
   c.arg[1] = 3;
   c.arg[2] = 0;
   sscanf(Cmd, " %lli %lli %lli", &c.arg[0], &c.arg[1], &c.arg[2]);
   SendCommand(&c);
   return 0;
}

int CmdLegicRfWrite(const char *Cmd)
{
    UsbCommand c={CMD_WRITER_LEGIC_RF};
    int res = sscanf(Cmd, " 0x%llx 0x%llx", &c.arg[0], &c.arg[1]);
	if(res != 2) {
		PrintAndLog("Please specify the offset and length as two hex strings");
        return -1;
    }
    SendCommand(&c);
    return 0;
}

int CmdLegicRfFill(const char *Cmd)
{
    UsbCommand cmd ={CMD_WRITER_LEGIC_RF};
    int res = sscanf(Cmd, " 0x%llx 0x%llx 0x%llx", &cmd.arg[0], &cmd.arg[1], &cmd.arg[2]);
    if(res != 3) {
        PrintAndLog("Please specify the offset, length and value as two hex strings");
        return -1;
    }

    int i;
    UsbCommand c={CMD_DOWNLOADED_SIM_SAMPLES_125K, {0, 0, 0}};
    for(i = 0; i < 48; i++) {
      c.d.asBytes[i] = cmd.arg[2];
    }
    for(i = 0; i < 22; i++) {
      c.arg[0] = i*48;
      SendCommand(&c);
      WaitForResponse(CMD_ACK,NULL);
    }
    SendCommand(&cmd);
    return 0;
 }
Commit	Line	Data
a553f267	1	//-----------------------------------------------------------------------------
	2	// Copyright (C) 2010 iZsh <izsh at fail0verflow.com>
	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 Legic commands
	9	//-----------------------------------------------------------------------------
	10
8e220a91	11	#include <stdio.h>
8e220a91	12	#include <string.h>
28fdb04f	13	//#include "proxusb.h"
902cb3c0	14	#include "proxmark3.h"
41dab153	15	#include "data.h"
41dab153	16	#include "ui.h"
7fe9b0b7	17	#include "cmdparser.h"
7fe9b0b7	18	#include "cmdhflegic.h"
669c1b80	19	#include "cmdmain.h"
7fe9b0b7	20
	21	static int CmdHelp(const char *Cmd);
	22
7fe9b0b7	23	static command_t CommandTable[] =
	24	{
	25	{"help", CmdHelp, 1, "This help"},
669c1b80	26	{"decode", CmdLegicDecode, 0, "Display deobfuscated and decoded LEGIC RF tag data (use after hf legic reader)"},
41dab153	27	{"reader", CmdLegicRFRead, 0, "[offset [length]] -- read bytes from a LEGIC card"},
3612a8a8	28	{"save", CmdLegicSave, 0, "<filename> [<length>] -- Store samples"},
	29	{"load", CmdLegicLoad, 0, "<filename> -- Restore samples"},
	30	{"sim", CmdLegicRfSim, 0, "[phase drift [frame drift [req/resp drift]]] Start tag simulator (use after load or read)"},
	31	{"write", CmdLegicRfWrite,0, "<offset> <length> -- Write sample buffer (user after load or read)"},
	32	{"fill", CmdLegicRfFill, 0, "<offset> <length> <value> -- Fill/Write tag with constant value"},
7fe9b0b7	33	{NULL, NULL, 0, NULL}
	34	};
	35
	36	int CmdHFLegic(const char *Cmd)
	37	{
	38	CmdsParse(CommandTable, Cmd);
	39	return 0;
	40	}
	41
	42	int CmdHelp(const char *Cmd)
	43	{
	44	CmdsHelp(CommandTable);
	45	return 0;
	46	}
669c1b80	47
	48	/*
	49	* Output BigBuf and deobfuscate LEGIC RF tag data.
	50	* This is based on information given in the talk held
	51	* by Henryk Ploetz and Karsten Nohl at 26c3
669c1b80	52	*/
	53	int CmdLegicDecode(const char *Cmd)
	54	{
	55	int h, i, j, k, n;
	56	int segment_len = 0;
	57	int segment_flag = 0;
	58	int stamp_len = 0;
	59	int crc = 0;
	60	int wrp = 0;
	61	int wrc = 0;
	62	int data_buf[1032]; // receiver buffer
	63	char out_string[3076]; // just use big buffer - bad practice
	64	char token_type[4];
	65	int delivered = 0;
	66
	67	h = 0;
	68
	69	// copy data from proxmark into buffer
	70	for (i = 0; i < 256; i += 12, h += 48) {
	71	UsbCommand c = {CMD_DOWNLOAD_RAW_ADC_SAMPLES_125K, {i, 0, 0}};
	72	SendCommand(&c);
902cb3c0	73	WaitForResponse(CMD_DOWNLOADED_RAW_ADC_SAMPLES_125K, NULL);
669c1b80	74
	75	for (j = 0; j < 48; j += 8) {
	76	for (k = 0; k < 8; k++) {
	77	data_buf[h+j+k] = sample_buf[j+k];
	78	}
	79	delivered += 8;
	80	if (delivered >= 1024)
	81	break;
	82	}
	83	}
	84
	85	// Output CDF System area (9 bytes) plus remaining header area (12 bytes)
	86
	87	PrintAndLog("\nCDF: System Area");
	88
	89	PrintAndLog("MCD: %02x, MSN: %02x %02x %02x, MCC: %02x",
	90	data_buf[0],
	91	data_buf[1],
	92	data_buf[2],
	93	data_buf[3],
	94	data_buf[4]
	95	);
	96
	97	crc = data_buf[4];
	98
	99	switch (data_buf[5]&0x7f) {
	100	case 0x00 ... 0x2f:
	101	strncpy(token_type, "IAM",sizeof(token_type));
	102	break;
	103	case 0x30 ... 0x6f:
	104	strcpy(token_type, "SAM");
	105	break;
	106	case 0x70 ... 0x7f:
	107	strcpy(token_type, "GAM");
	108	break;
	109	default:
	110	strcpy(token_type, "???");
	111	break;
	112	}
	113
	114	stamp_len = 0xfc - data_buf[6];
	115
	116	PrintAndLog("DCF: %02x %02x, Token_Type=%s (OLE=%01u), Stamp_len=%02u",
	117	data_buf[5],
	118	data_buf[6],
	119	token_type,
	120	(data_buf[5]&0x80)>>7,
	121	stamp_len
	122	);
	123
	124	PrintAndLog("WRP=%02u, WRC=%01u, RD=%01u, raw=%02x, SSC=%02x",
	125	data_buf[7]&0x0f,
	126	(data_buf[7]&0x70)>>4,
	127	(data_buf[7]&0x80)>>7,
	128	data_buf[7],
	129	data_buf[8]
	130	);
	131
	132	PrintAndLog("Remaining Header Area");
	133
	134	PrintAndLog("%02x %02x %02x %02x %02x %02x %02x %02x %02x %02x %02x %02x %02x",
	135	data_buf[9],
	136	data_buf[10],
	137	data_buf[11],
138	data_buf[12],
139	data_buf[13],
140	data_buf[14],
141	data_buf[15],
142	data_buf[16],
143	data_buf[17],
144	data_buf[18],
145	data_buf[19],
146	data_buf[20],
147	data_buf[21]
148	);
149
150	PrintAndLog("\nADF: User Area");
151
41dab153	152	i = 22;
669c1b80	153	for (n=0; n<64; n++) {
	154	segment_len = ((data_buf[i+1]^crc)&0x0f) * 256 + (data_buf[i]^crc);
	155	segment_flag = ((data_buf[i+1]^crc)&0xf0)>>4;
	156
	157	wrp = (data_buf[i+2]^crc);
	158	wrc = ((data_buf[i+3]^crc)&0x70)>>4;
	159
	160	PrintAndLog("Segment %02u: raw header=%02x %02x %02x %02x, flag=%01x (valid=%01u, last=%01u), len=%04u, WRP=%02u, WRC=%02u, RD=%01u, CRC=%02x",
	161	n,
	162	data_buf[i]^crc,
	163	data_buf[i+1]^crc,
	164	data_buf[i+2]^crc,
	165	data_buf[i+3]^crc,
	166	segment_flag,
	167	(segment_flag&0x4)>>2,
	168	(segment_flag&0x8)>>3,
	169	segment_len,
	170	wrp,
	171	wrc,
	172	((data_buf[i+3]^crc)&0x80)>>7,
	173	(data_buf[i+4]^crc)
	174	);
	175
	176	i+=5;
	177
	178	if (wrc>0) {
	179	PrintAndLog("WRC protected area:");
31332265	180	for (k=0, j=0; k < wrc && j<(sizeof(out_string)-3); k++, i++, j += 3) {
669c1b80	181	sprintf(&out_string[j], "%02x", (data_buf[i]^crc));
	182	out_string[j+2] = ' ';
	183	};
	184
	185	out_string[j] = '\0';
	186
	187	PrintAndLog("%s", out_string);
	188	}
	189
	190	if (wrp>wrc) {
	191	PrintAndLog("Remaining write protected area:");
	192
31332265	193	for (k=0, j=0; k < (wrp-wrc) && j<(sizeof(out_string)-3); k++, i++, j += 3) {
669c1b80	194	sprintf(&out_string[j], "%02x", (data_buf[i]^crc));
	195	out_string[j+2] = ' ';
	196	};
	197
	198	out_string[j] = '\0';
	199
	200	PrintAndLog("%s", out_string);
	201	if((wrp-wrc) == 8) {
	202	sprintf(out_string,"Card ID: %2X%02X%02X",data_buf[i-4]^crc,data_buf[i-3]^crc,data_buf[i-2]^crc);
	203	PrintAndLog("%s", out_string);
	204	}
	205	}
	206
	207	PrintAndLog("Remaining segment payload:");
31332265	208	for (k=0, j=0; k < (segment_len - wrp - 5) && j<(sizeof(out_string)-3); k++, i++, j += 3) {
669c1b80	209	sprintf(&out_string[j], "%02x", (data_buf[i]^crc));
	210	out_string[j+2] = ' ';
	211	};
	212
	213	out_string[j] = '\0';
	214
	215	PrintAndLog("%s", out_string);
	216
	217	// end with last segment
	218	if (segment_flag & 0x8)
	219	return 0;
	220	};
	221	return 0;
	222	}
41dab153	223
	224	int CmdLegicRFRead(const char *Cmd)
	225	{
	226	int byte_count=0,offset=0;
	227	sscanf(Cmd, "%i %i", &offset, &byte_count);
a2b1414f	228	if(byte_count == 0) byte_count = -1;
a2b1414f	229	if(byte_count + offset > 1024) byte_count = 1024 - offset;
41dab153	230	UsbCommand c={CMD_READER_LEGIC_RF, {offset, byte_count, 0}};
	231	SendCommand(&c);
	232	return 0;
	233	}
3612a8a8	234
	235	int CmdLegicLoad(const char *Cmd)
	236	{
	237	FILE *f = fopen(Cmd, "r");
	238	if(!f) {
	239	PrintAndLog("couldn't open '%s'", Cmd);
	240	return -1;
	241	}
	242	char line[80]; int offset = 0; unsigned int data[8];
	243	while(fgets(line, sizeof(line), f)) {
	244	int res = sscanf(line, "%x %x %x %x %x %x %x %x",
	245	&data[0], &data[1], &data[2], &data[3],
	246	&data[4], &data[5], &data[6], &data[7]);
	247	if(res != 8) {
	248	PrintAndLog("Error: could not read samples");
	249	fclose(f);
	250	return -1;
	251	}
	252	UsbCommand c={CMD_DOWNLOADED_SIM_SAMPLES_125K, {offset, 0, 0}};
	253	int j; for(j = 0; j < 8; j++) {
	254	c.d.asBytes[j] = data[j];
	255	}
	256	SendCommand(&c);
902cb3c0	257	WaitForResponse(CMD_ACK, NULL);
3612a8a8	258	offset += 8;
	259	}
	260	fclose(f);
	261	PrintAndLog("loaded %u samples", offset);
	262	return 0;
	263	}
	264
	265	int CmdLegicSave(const char *Cmd)
	266	{
	267	int n;
	268	int requested = 1024;
	269	int offset = 0;
	270	char filename[1024];
	271	sscanf(Cmd, " %s %i %i", filename, &requested, &offset);
	272	if (offset % 4 != 0) {
	273	PrintAndLog("Offset must be a multiple of 4");
	274	return 0;
	275	}
	276	offset = offset/4;
	277
	278	int delivered = 0;
	279
	280	if (requested == 0) {
	281	n = 12;
	282	requested = 12;
	283	} else {
	284	n = requested/4;
	285	}
	286
	287	FILE *f = fopen(filename, "w");
	288	if(!f) {
	289	PrintAndLog("couldn't open '%s'", Cmd+1);
	290	return -1;
	291	}
	292
	293	for (int i = offset; i < n+offset; i += 12) {
	294	UsbCommand c = {CMD_DOWNLOAD_RAW_ADC_SAMPLES_125K, {i, 0, 0}};
	295	SendCommand(&c);
902cb3c0	296	WaitForResponse(CMD_DOWNLOADED_RAW_ADC_SAMPLES_125K, NULL);
3612a8a8	297	for (int j = 0; j < 48; j += 8) {
	298	fprintf(f, "%02x %02x %02x %02x %02x %02x %02x %02x\n",
	299	sample_buf[j+0],
	300	sample_buf[j+1],
	301	sample_buf[j+2],
	302	sample_buf[j+3],
	303	sample_buf[j+4],
	304	sample_buf[j+5],
	305	sample_buf[j+6],
	306	sample_buf[j+7]
	307	);
	308	delivered += 8;
	309	if (delivered >= requested)
	310	break;
	311	}
	312	if (delivered >= requested)
	313	break;
	314	}
	315
	316	fclose(f);
	317	PrintAndLog("saved %u samples", delivered);
	318	return 0;
	319	}
	320
	321	int CmdLegicRfSim(const char *Cmd)
	322	{
	323	UsbCommand c={CMD_SIMULATE_TAG_LEGIC_RF};
	324	c.arg[0] = 6;
	325	c.arg[1] = 3;
	326	c.arg[2] = 0;
28fdb04f	327	sscanf(Cmd, " %lli %lli %lli", &c.arg[0], &c.arg[1], &c.arg[2]);
3612a8a8	328	SendCommand(&c);
	329	return 0;
	330	}
	331
	332	int CmdLegicRfWrite(const char *Cmd)
	333	{
	334	UsbCommand c={CMD_WRITER_LEGIC_RF};
28fdb04f	335	int res = sscanf(Cmd, " 0x%llx 0x%llx", &c.arg[0], &c.arg[1]);
3612a8a8	336	if(res != 2) {
	337	PrintAndLog("Please specify the offset and length as two hex strings");
	338	return -1;
	339	}
	340	SendCommand(&c);
	341	return 0;
	342	}
	343
	344	int CmdLegicRfFill(const char *Cmd)
	345	{
	346	UsbCommand cmd ={CMD_WRITER_LEGIC_RF};
28fdb04f	347	int res = sscanf(Cmd, " 0x%llx 0x%llx 0x%llx", &cmd.arg[0], &cmd.arg[1], &cmd.arg[2]);
3612a8a8	348	if(res != 3) {
	349	PrintAndLog("Please specify the offset, length and value as two hex strings");
	350	return -1;
	351	}
	352
	353	int i;
	354	UsbCommand c={CMD_DOWNLOADED_SIM_SAMPLES_125K, {0, 0, 0}};
	355	for(i = 0; i < 48; i++) {
	356	c.d.asBytes[i] = cmd.arg[2];
	357	}
	358	for(i = 0; i < 22; i++) {
	359	c.arg[0] = i*48;
	360	SendCommand(&c);
902cb3c0	361	WaitForResponse(CMD_ACK,NULL);
3612a8a8	362	}
	363	SendCommand(&cmd);
	364	return 0;
	365	}
	366