// the license.
//-----------------------------------------------------------------------------
// Low frequency Presco tag commands
+// ASK/Manchester, rf/32, 128 bits (complete)
//-----------------------------------------------------------------------------
+
+#include "cmdlfpresco.h"
+
#include <string.h>
#include <inttypes.h>
-#include "cmdlfpresco.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 <Card ID - 9 digits> <Q5>");
+ PrintAndLog("Usage: lf presco clone d <Card-ID> H <hex-ID> <Q5>");
PrintAndLog("Options :");
- PrintAndLog(" <Card Number> : 9 digit presco card number");
- //PrintAndLog(" <Q5> : specify write to Q5 (t5555 instead of t55x7)");
+ 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 123456789");
+ PrintAndLog("Sample : lf presco clone d 123456789");
return 0;
}
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 <Card-Number>");
+ PrintAndLog("Usage: lf presco sim d <Card-ID> or H <hex-ID>");
PrintAndLog("Options :");
- PrintAndLog(" <Card Number> : 9 digit presco card number");
+ PrintAndLog(" d <Card-ID> : 9 digit presco card number");
+ PrintAndLog(" H <hex-ID> : 8 digit hex card number");
PrintAndLog("");
- PrintAndLog("Sample : lf presco sim 123456789");
+ PrintAndLog("Sample : lf presco sim d 123456789");
return 0;
}
-// calc checksum
-int GetWiegandFromPresco(const char *id, uint32_t *sitecode, uint32_t *usercode) {
-
+// 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;
- 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;
-
- *sitecode += val;
-
- // last digit is only added, not multipled.
- if ( index < strlen(id)-1 )
- *sitecode *= 12;
+ 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;
}
- *usercode = *sitecode % 65536;
- *sitecode /= 16777216;
- return 0;
-}
+ // No args
+ if(cmdp == 0) errors = 1;
-int GetPrescoBits(uint32_t sitecode, uint32_t usercode, uint8_t *prescoBits) {
- uint8_t pre[66];
- memset(pre, 0, sizeof(pre));
- prescoBits[7]=1;
- num_to_bytebits(26, 8, pre);
+ //Validations
+ if(errors || (stringlen == 0 && !hex) ) return -1;
- uint8_t wiegand[24];
- num_to_bytebits(sitecode, 8, wiegand);
- num_to_bytebits(usercode, 16, wiegand+8);
+ 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;
+ }
+ }
- wiegand_add_parity(pre+8, wiegand, 24);
- size_t bitLen = addParity(pre, prescoBits+8, 66, 4, 1);
+ *usercode = *fullcode & 0x0000FFFF; //% 65566
+ *sitecode = (*fullcode >> 24) & 0x000000FF; // /= 16777216;
+ return 0;
+}
- if (bitLen != 88) 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)) {
return 0;
}
size_t size = DemodBufferLen;
- //call lfdemod.c demod for Viking
+ //call lfdemod.c demod for presco
int ans = PrescoDemod(DemodBuffer, &size);
if (ans < 0) {
if (g_debugMode) PrintAndLog("Error Presco_Demod %d", ans);
//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 cardid = bytebits_to_byte(DemodBuffer+ans+24, 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", raw1,raw2);
- setDemodBuf(DemodBuffer+ans, 64, 0);
-
- // uint32_t sitecode = 0, usercode = 0;
- // GetWiegandFromPresco(id, &sitecode, &usercode);
- // PrintAndLog8("SiteCode %d | UserCode %d", sitecode, usercode);
-
+ 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
+ // Presco Number: 123456789 --> Sitecode 30 | usercode 8665
// read lf silently
- CmdLFRead("s");
- // get samples silently
- getSamples("30000",false);
+ 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) {
- char cmdp = param_getchar(Cmd, 0);
- if (strlen(Cmd) == 0 || cmdp == 'h' || cmdp == 'H') return usage_lf_presco_clone();
-
- uint32_t sitecode=0, usercode=0;
- uint8_t bits[96];
- uint8_t *bs = bits;
- memset(bs,0,sizeof(bits));
+ 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};
- if (param_getchar(Cmd, 3) == 'Q' || param_getchar(Cmd, 3) == 'q')
- blocks[0] = T5555_MODULATION_MANCHESTER | 32<<T5555_BITRATE_SHIFT | 4<<T5555_MAXBLOCK_SHIFT | T5555_ST_TERMINATOR;
-
// get wiegand from printed number.
- GetWiegandFromPresco(Cmd, &sitecode, &usercode);
-
+ 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);
PrintAndLog("Card Number Truncated to 16-bits (Presco): %u", usercode);
}
- if ( !GetPrescoBits(sitecode, usercode, bs)) {
- PrintAndLog("Error with tag bitstream generation.");
- return 1;
- }
+ blocks[1] = 0x10D00000; //preamble
+ blocks[2] = 0x00000000;
+ blocks[3] = 0x00000000;
+ blocks[4] = fullcode;
- blocks[1] = bytebits_to_byte(bs,32);
- blocks[2] = bytebits_to_byte(bs+32,32);
- blocks[3] = bytebits_to_byte(bs+64,32);
- blocks[4] = bytebits_to_byte(bs+96,32);
-
- PrintAndLog("Preparing to clone Presco to T55x7 with SiteCode: %u, UserCode: %u", sitecode, usercode);
+ 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(" 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 (uint8_t i=0; i<5; 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;
-}
-int CmdPrescoSim(const char *Cmd) {
- // uint32_t id = 0;
- // uint64_t rawID = 0;
- // uint8_t clk = 32, encoding = 1, separator = 0, invert = 0;
+ UsbCommand resp;
+ UsbCommand c = {CMD_T55XX_WRITE_BLOCK, {0,0,0}};
- // char cmdp = param_getchar(Cmd, 0);
- // if (strlen(Cmd) == 0 || cmdp == 'h' || cmdp == 'H') return usage_lf_presco_sim();
+ 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;
+}
- // id = param_get32ex(Cmd, 0, 0, 16);
- // if (id == 0) return usage_lf_presco_sim();
+// 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();
- //rawID = getVikingBits(id);
+ 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;
- // uint16_t arg1, arg2;
- // size_t size = 64;
- // arg1 = clk << 8 | encoding;
- // arg2 = invert << 8 | separator;
+ PrintAndLog("Simulating Presco - SiteCode: %u, UserCode: %u, FullCode: %08X",sitecode, usercode, fullcode);
- // PrintAndLog("Simulating - ID: %08X, Raw: %08X%08X",id,(uint32_t)(rawID >> 32),(uint32_t) (rawID & 0xFFFFFFFF));
-
- // UsbCommand c = {CMD_ASK_SIM_TAG, {arg1, arg2, size}};
- // num_to_bytebits(rawID, size, c.d.asBytes);
- // clearCommandBuffer();
- // SendCommand(&c);
+ 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, "<8 digit ID number> clone presco tag"},
-// {"sim", CmdPrescoSim, 0, "<8 digit ID number> simulate presco tag"},
- {NULL, NULL, 0, NULL}
+ {"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) {
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