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ADD: 'lf paradox sim' - started with sim command

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This commit is contained in:
iceman1001 2017-08-09 21:00:03 +02:00
parent 117003bdb2
commit 78f01b0ffa
1 changed files with 59 additions and 5 deletions
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64
client/cmdlfparadox.c
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@ -21,6 +21,20 @@
#include "lfdemod.h"
static int CmdHelp(const char *Cmd);
int usage_lf_paradox_sim(void) {
PrintAndLog("Enables simulation of Paradox card with specified card number.");
PrintAndLog("Simulation runs until the button is pressed or another USB command is issued.");
PrintAndLog("The facility-code is 8-bit and the card number is 16-bit. Larger values are truncated.");
PrintAndLog("");
PrintAndLog("Usage: lf paradox sim [h] <Facility-Code> <Card-Number>");
PrintAndLog("Options :");
PrintAndLog(" h : this help");
PrintAndLog(" <Facility-Code> : 8-bit value facility code");
PrintAndLog(" <Card Number> : 16-bit value card number");
PrintAndLog("");
PrintAndLog("Sample : lf paradox sim 123 11223");
return 0;
}
// loop to get raw paradox waveform then FSK demodulate the TAG ID from it
int detectParadox(uint8_t *dest, size_t *size, uint32_t *hi2, uint32_t *hi, uint32_t *lo, int *waveStartIdx) {
@ -41,13 +55,14 @@ int detectParadox(uint8_t *dest, size_t *size, uint32_t *hi2, uint32_t *hi, uint
for (size_t idx = numStart; (idx-numStart) < *size - sizeof(preamble); idx+=2){
if (dest[idx] == dest[idx+1])
return -4; //not manchester data
*hi2 = (*hi2<<1)|(*hi>>31);
*hi = (*hi<<1)|(*lo>>31);
*hi2 = (*hi2 << 1) | (*hi >> 31);
*hi = (*hi << 1) | (*lo >> 31);
//Then, shift in a 0 or one into low
if (dest[idx] && !dest[idx+1]) // 1 0
*lo=(*lo<<1)|1;
*lo = (*lo << 1) | 1;
else // 0 1
*lo=(*lo<<1)|0;
*lo = (*lo << 1) | 0;
}
return (int)startIdx;
}
@ -117,12 +132,51 @@ int CmdParadoxRead(const char *Cmd) {
return CmdParadoxDemod(Cmd);
}
int CmdParadoxSim(const char *Cmd) {
char cmdp = param_getchar(Cmd, 0);
if (strlen(Cmd) == 0 || cmdp == 'h' || cmdp == 'H') return usage_lf_paradox_sim();
uint32_t facilitycode = 0, cardnumber = 0, fc = 0, cn = 0;
uint8_t bs[96];
size_t size = sizeof(bs);
memset(bs, 0x00, size);
// Paradox uses: fcHigh: 10, fcLow: 8, clk: 50, invert: 1 FSK2a
uint8_t clk = 50, invert = 1, high = 10, low = 8;
uint16_t arg1, arg2;
arg1 = high << 8 | low;
arg2 = invert << 8 | clk;
if (sscanf(Cmd, "%u %u", &fc, &cn ) != 2) return usage_lf_paradox_sim();
facilitycode = (fc & 0x000000FF);
cardnumber = (cn & 0x0000FFFF);
// if ( !GetParadoxBits(facilitycode, cardnumber, bs)) {
// PrintAndLog("Error with tag bitstream generation.");
// return 1;
// }
PrintAndLog("Simulating Paradox - Facility Code: %u, CardNumber: %u", facilitycode, cardnumber );
UsbCommand c = {CMD_FSK_SIM_TAG, {arg1, arg2, size}};
memcpy(c.d.asBytes, bs, size);
clearCommandBuffer();
SendCommand(&c);
PrintAndLog("UNFINISHED");
return 0;
}
static command_t CommandTable[] = {
{"help", CmdHelp, 1, "This help"},
{"demod", CmdParadoxDemod, 1, "Demodulate a Paradox FSK tag from the GraphBuffer"},
{"read", CmdParadoxRead, 0, "Attempt to read and Extract tag data from the antenna"},
// {"clone", CmdParadoxClone,0, "clone paradox tag"},
// {"sim", CmdParadoxSim, 0, "simulate paradox tag"},
{"sim", CmdParadoxSim, 0, "simulate paradox tag"},
{NULL, NULL, 0, NULL}
};