+//-----------------------------------------------------------------------------
+// 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"
{"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}
};
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);
+ 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);
+ 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, " %i %i %i", &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%x 0x%x", &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%x 0x%x 0x%x", &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);
+ }
+ SendCommand(&cmd);
+ return 0;
+ }
+