proxmark3/client/cmdlfpresco.c
pwpiwi ad939de501
USB comms: part 4 towards @micolous PR #463
* make uart_communication(), storeCommand() and getCommand() static in comms.c
* move receiver thread creation and respective mutexes to comms.c
* add mutex and signal for tx buffer
* use comms.c for flasher as well
* remove comm functions from client/proxmark3.h
* this completes isolating all USB communication related functions in comms.c
* don't assume a port to be defined by a name. Change parameter in OpenProxmark() to void*
* comms.c: set sp and serial_port_name to NULL when offline
2018-06-03 14:25:20 +02:00

267 lines
8.1 KiB
C

//-----------------------------------------------------------------------------
//
// 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.
//-----------------------------------------------------------------------------
// Low frequency Presco tag commands
// ASK/Manchester, rf/32, 128 bits (complete)
//-----------------------------------------------------------------------------
#include "cmdlfpresco.h"
#include <string.h>
#include <inttypes.h>
#include <stdio.h>
#include "comms.h"
#include "ui.h"
#include "util.h"
#include "graph.h"
#include "cmdparser.h"
#include "cmddata.h"
#include "cmdmain.h"
#include "cmdlf.h"
#include "protocols.h" // for T55xx config register definitions
#include "lfdemod.h" // parityTest
static int CmdHelp(const char *Cmd);
int usage_lf_presco_clone(void){
PrintAndLog("clone a Presco tag to a T55x7 tag.");
PrintAndLog("Usage: lf presco clone d <Card-ID> H <hex-ID> <Q5>");
PrintAndLog("Options :");
PrintAndLog(" d <Card-ID> : 9 digit presco card ID");
PrintAndLog(" H <hex-ID> : 8 digit hex card number");
PrintAndLog(" <Q5> : specify write to Q5 (t5555 instead of t55x7)");
PrintAndLog("");
PrintAndLog("Sample : lf presco clone d 123456789");
return 0;
}
int usage_lf_presco_sim(void) {
PrintAndLog("Enables simulation of presco card with specified card number.");
PrintAndLog("Simulation runs until the button is pressed or another USB command is issued.");
PrintAndLog("Per presco format, the card number is 9 digit number and can contain *# chars. Larger values are truncated.");
PrintAndLog("");
PrintAndLog("Usage: lf presco sim d <Card-ID> or H <hex-ID>");
PrintAndLog("Options :");
PrintAndLog(" d <Card-ID> : 9 digit presco card number");
PrintAndLog(" H <hex-ID> : 8 digit hex card number");
PrintAndLog("");
PrintAndLog("Sample : lf presco sim d 123456789");
return 0;
}
// convert base 12 ID to sitecode & usercode & 8 bit other unknown code
int GetWiegandFromPresco(const char *Cmd, uint32_t *sitecode, uint32_t *usercode, uint32_t *fullcode, bool *Q5) {
uint8_t val = 0;
bool hex = false, errors = false;
uint8_t cmdp = 0;
char id[11];
int stringlen = 0;
while(param_getchar(Cmd, cmdp) != 0x00) {
switch(param_getchar(Cmd, cmdp)) {
case 'h':
return -1;
case 'H':
hex = true;
//get hex
*fullcode = param_get32ex(Cmd, cmdp+1, 0, 10);
cmdp+=2;
break;
case 'D':
case 'd':
//param get string int param_getstr(const char *line, int paramnum, char * str)
stringlen = param_getstr(Cmd, cmdp+1, id, sizeof(id));
if (stringlen < 2) return -1;
cmdp+=2;
break;
case 'Q':
case 'q':
*Q5 = true;
cmdp++;
break;
default:
PrintAndLog("Unknown parameter '%c'", param_getchar(Cmd, cmdp));
errors = 1;
break;
}
if(errors) break;
}
// No args
if(cmdp == 0) errors = 1;
//Validations
if(errors || (stringlen == 0 && !hex) ) return -1;
if (!hex) {
for (int index =0; index < strlen(id); ++index) {
// Get value from number string.
if ( id[index] == '*' ) val = 10;
if ( id[index] == '#') val = 11;
if ( id[index] >= 0x30 && id[index] <= 0x39 )
val = id[index] - 0x30;
*fullcode += val;
// last digit is only added, not multipled.
if ( index < strlen(id)-1 )
*fullcode *= 12;
}
}
*usercode = *fullcode & 0x0000FFFF; //% 65566
*sitecode = (*fullcode >> 24) & 0x000000FF; // /= 16777216;
return 0;
}
// calc not certain - intended to get bitstream for programming / sim
int GetPrescoBits(uint32_t fullcode, uint8_t *prescoBits) {
num_to_bytebits(0x10D00000, 32, prescoBits);
num_to_bytebits(0x00000000, 32, prescoBits+32);
num_to_bytebits(0x00000000, 32, prescoBits+64);
num_to_bytebits(fullcode , 32, prescoBits+96);
return 1;
}
//see ASKDemod for what args are accepted
int CmdPrescoDemod(const char *Cmd) {
if (!ASKDemod(Cmd, false, false, 1)) {
if (g_debugMode) PrintAndLog("ASKDemod failed");
return 0;
}
size_t size = DemodBufferLen;
//call lfdemod.c demod for presco
int ans = PrescoDemod(DemodBuffer, &size);
if (ans < 0) {
if (g_debugMode) PrintAndLog("Error Presco_Demod %d", ans);
return 0;
}
//got a good demod
uint32_t raw1 = bytebits_to_byte(DemodBuffer+ans, 32);
uint32_t raw2 = bytebits_to_byte(DemodBuffer+ans+32, 32);
uint32_t raw3 = bytebits_to_byte(DemodBuffer+ans+64, 32);
uint32_t raw4 = bytebits_to_byte(DemodBuffer+ans+96, 32);
uint32_t cardid = raw4;
PrintAndLog("Presco Tag Found: Card ID %08X", cardid);
PrintAndLog("Raw: %08X%08X%08X%08X", raw1,raw2,raw3,raw4);
setDemodBuf(DemodBuffer, 128, ans);
setClockGrid(g_DemodClock, g_DemodStartIdx + (ans*g_DemodClock));
uint32_t sitecode = 0, usercode = 0, fullcode = 0;
bool Q5=false;
char cmd[12] = {0};
sprintf(cmd, "H %08X", cardid);
GetWiegandFromPresco(cmd, &sitecode, &usercode, &fullcode, &Q5);
PrintAndLog("SiteCode %u, UserCode %u, FullCode, %08X", sitecode, usercode, fullcode);
return 1;
}
//see ASKDemod for what args are accepted
int CmdPrescoRead(const char *Cmd) {
// Presco Number: 123456789 --> Sitecode 30 | usercode 8665
// read lf silently
lf_read(true, 10000);
// demod and output Presco ID
return CmdPrescoDemod(Cmd);
}
// takes base 12 ID converts to hex
// Or takes 8 digit hex ID
int CmdPrescoClone(const char *Cmd) {
bool Q5 = false;
uint32_t sitecode=0, usercode=0, fullcode=0;
uint32_t blocks[5] = {T55x7_MODULATION_MANCHESTER | T55x7_BITRATE_RF_32 | 4<<T55x7_MAXBLOCK_SHIFT | T55x7_ST_TERMINATOR, 0, 0, 0, 5};
// get wiegand from printed number.
if (GetWiegandFromPresco(Cmd, &sitecode, &usercode, &fullcode, &Q5) == -1) return usage_lf_presco_clone();
if (Q5)
blocks[0] = T5555_MODULATION_MANCHESTER | ((32-2)>>1)<<T5555_BITRATE_SHIFT | 4<<T5555_MAXBLOCK_SHIFT | T5555_ST_TERMINATOR;
if ((sitecode & 0xFF) != sitecode) {
sitecode &= 0xFF;
PrintAndLog("Facility-Code Truncated to 8-bits (Presco): %u", sitecode);
}
if ((usercode & 0xFFFF) != usercode) {
usercode &= 0xFFFF;
PrintAndLog("Card Number Truncated to 16-bits (Presco): %u", usercode);
}
blocks[1] = 0x10D00000; //preamble
blocks[2] = 0x00000000;
blocks[3] = 0x00000000;
blocks[4] = fullcode;
PrintAndLog("Preparing to clone Presco to T55x7 with SiteCode: %u, UserCode: %u, FullCode: %08x", sitecode, usercode, fullcode);
PrintAndLog("Blk | Data ");
PrintAndLog("----+------------");
PrintAndLog(" 00 | 0x%08x", blocks[0]);
PrintAndLog(" 01 | 0x%08x", blocks[1]);
PrintAndLog(" 02 | 0x%08x", blocks[2]);
PrintAndLog(" 03 | 0x%08x", blocks[3]);
PrintAndLog(" 04 | 0x%08x", blocks[4]);
UsbCommand resp;
UsbCommand c = {CMD_T55XX_WRITE_BLOCK, {0,0,0}};
for (int i=4; i>=0; i--) {
c.arg[0] = blocks[i];
c.arg[1] = i;
clearCommandBuffer();
SendCommand(&c);
if (!WaitForResponseTimeout(CMD_ACK, &resp, 1000)){
PrintAndLog("Error occurred, device did not respond during write operation.");
return -1;
}
}
return 0;
}
// takes base 12 ID converts to hex
// Or takes 8 digit hex ID
int CmdPrescoSim(const char *Cmd) {
uint32_t sitecode=0, usercode=0, fullcode=0;
bool Q5=false;
// get wiegand from printed number.
if (GetWiegandFromPresco(Cmd, &sitecode, &usercode, &fullcode, &Q5) == -1) return usage_lf_presco_sim();
uint8_t clk = 32, encoding = 1, separator = 1, invert = 0;
uint16_t arg1, arg2;
size_t size = 128;
arg1 = clk << 8 | encoding;
arg2 = invert << 8 | separator;
PrintAndLog("Simulating Presco - SiteCode: %u, UserCode: %u, FullCode: %08X",sitecode, usercode, fullcode);
UsbCommand c = {CMD_ASK_SIM_TAG, {arg1, arg2, size}};
GetPrescoBits(fullcode, c.d.asBytes);
clearCommandBuffer();
SendCommand(&c);
return 0;
}
static command_t CommandTable[] = {
{"help", CmdHelp, 1, "This help"},
{"read", CmdPrescoRead, 0, "Attempt to read and Extract tag data"},
{"clone", CmdPrescoClone, 0, "d <9 digit ID> or h <hex> [Q5] clone presco tag"},
{"sim", CmdPrescoSim, 0, "d <9 digit ID> or h <hex> simulate presco tag"},
{NULL, NULL, 0, NULL}
};
int CmdLFPresco(const char *Cmd) {
clearCommandBuffer();
CmdsParse(CommandTable, Cmd);
return 0;
}
int CmdHelp(const char *Cmd) {
CmdsHelp(CommandTable);
return 0;
}