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@marshmellows memory fix
[proxmark3-svn] / client / cmddata.c
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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// Data and Graph commands
9//-----------------------------------------------------------------------------
10
7fe9b0b7 11#include <stdio.h>
12#include <stdlib.h>
13#include <string.h>
14#include <limits.h>
902cb3c0 15#include "proxmark3.h"
7fe9b0b7 16#include "data.h"
17#include "ui.h"
18#include "graph.h"
19#include "cmdparser.h"
d51b2eda 20#include "util.h"
7fe9b0b7 21#include "cmdmain.h"
22#include "cmddata.h"
7db5f1ca 23#include "lfdemod.h"
31abe49f 24#include "usb_cmd.h"
73d04bb4 25#include "crc.h"
ad6219fc 26#include "crc16.h"
27
4118b74d 28uint8_t DemodBuffer[MAX_DEMOD_BUF_LEN];
ec75f5c1 29uint8_t g_debugMode;
2b3af97d 30size_t DemodBufferLen;
7fe9b0b7 31static int CmdHelp(const char *Cmd);
32
4118b74d 33//set the demod buffer with given array of binary (one bit per byte)
34//by marshmellow
ec75f5c1 35void setDemodBuf(uint8_t *buff, size_t size, size_t startIdx)
4118b74d 36{
13d77ef9 37 if (buff == NULL)
38 return;
39
40 if ( size >= MAX_DEMOD_BUF_LEN)
41 size = MAX_DEMOD_BUF_LEN;
42
ec75f5c1 43 size_t i = 0;
44 for (; i < size; i++){
45 DemodBuffer[i]=buff[startIdx++];
ba1a299c 46 }
47 DemodBufferLen=size;
48 return;
4118b74d 49}
50
ec75f5c1 51int CmdSetDebugMode(const char *Cmd)
52{
e0165dcf 53 int demod=0;
54 sscanf(Cmd, "%i", &demod);
55 g_debugMode=(uint8_t)demod;
56 return 1;
ec75f5c1 57}
58
2d2f7d19 59int usage_data_printdemodbuf(){
60 PrintAndLog("Usage: data printdemodbuffer x o <offset>");
61 PrintAndLog("Options: ");
62 PrintAndLog(" h This help");
63 PrintAndLog(" x output in hex (omit for binary output)");
64 PrintAndLog(" o <offset> enter offset in # of bits");
65 return 0;
66}
67
4118b74d 68//by marshmellow
abd6112f 69void printDemodBuff(void)
4118b74d 70{
ba1a299c 71 int bitLen = DemodBufferLen;
2767fc02 72 if (bitLen<1) {
ba1a299c 73 PrintAndLog("no bits found in demod buffer");
74 return;
75 }
76 if (bitLen>512) bitLen=512; //max output to 512 bits if we have more - should be plenty
e0165dcf 77
2767fc02 78 char *bin = sprint_bin_break(DemodBuffer,bitLen,16);
79 PrintAndLog("%s",bin);
80
ba1a299c 81 return;
4118b74d 82}
83
8d960002 84int CmdPrintDemodBuff(const char *Cmd)
85{
2d2f7d19 86 char hex[512]={0x00};
87 bool hexMode = false;
88 bool errors = false;
89 uint8_t offset = 0;
90 char cmdp = 0;
91 while(param_getchar(Cmd, cmdp) != 0x00)
92 {
93 switch(param_getchar(Cmd, cmdp))
94 {
95 case 'h':
96 case 'H':
97 return usage_data_printdemodbuf();
98 case 'x':
99 case 'X':
100 hexMode = true;
101 cmdp++;
102 break;
103 case 'o':
104 case 'O':
105 offset = param_get8(Cmd, cmdp+1);
106 if (!offset) errors = true;
107 cmdp += 2;
108 break;
109 default:
110 PrintAndLog("Unknown parameter '%c'", param_getchar(Cmd, cmdp));
111 errors = true;
112 break;
113 }
114 if(errors) break;
e0165dcf 115 }
2d2f7d19 116 //Validations
117 if(errors) return usage_data_printdemodbuf();
118
119 int numBits = (DemodBufferLen-offset) & 0x7FC; //make sure we don't exceed our string
120
121 if (hexMode){
122 char *buf = (char *) (DemodBuffer + offset);
123 numBits = binarraytohex(hex, buf, numBits);
e0165dcf 124 if (numBits==0) return 0;
2d2f7d19 125 PrintAndLog("DemodBuffer: %s",hex);
e0165dcf 126 } else {
2d2f7d19 127 //setDemodBuf(DemodBuffer, DemodBufferLen-offset, offset);
128 char *bin = sprint_bin_break(DemodBuffer+offset,numBits,16);
129 PrintAndLog("DemodBuffer:\n%s",bin);
e0165dcf 130 }
131 return 1;
8d960002 132}
7fe9b0b7 133
2767fc02 134//by marshmellow
78f5b1a7 135//this function strictly converts >1 to 1 and <1 to 0 for each sample in the graphbuffer
136int CmdGetBitStream(const char *Cmd)
137{
e0165dcf 138 int i;
139 CmdHpf(Cmd);
140 for (i = 0; i < GraphTraceLen; i++) {
141 if (GraphBuffer[i] >= 1) {
142 GraphBuffer[i] = 1;
143 } else {
144 GraphBuffer[i] = 0;
145 }
146 }
147 RepaintGraphWindow();
148 return 0;
78f5b1a7 149}
150
d5a72d2f 151//by marshmellow
abd6112f 152//print 64 bit EM410x ID in multiple formats
b41534d1 153void printEM410x(uint32_t hi, uint64_t id)
2fc2150e 154{
e0165dcf 155 if (id || hi){
156 uint64_t iii=1;
157 uint64_t id2lo=0;
158 uint32_t ii=0;
159 uint32_t i=0;
160 for (ii=5; ii>0;ii--){
161 for (i=0;i<8;i++){
162 id2lo=(id2lo<<1LL) | ((id & (iii << (i+((ii-1)*8)))) >> (i+((ii-1)*8)));
163 }
164 }
165 if (hi){
166 //output 88 bit em id
2767fc02 167 PrintAndLog("\nEM TAG ID : %06X%016llX", hi, id);
e0165dcf 168 } else{
169 //output 40 bit em id
2767fc02 170 PrintAndLog("\nEM TAG ID : %010llX", id);
171 PrintAndLog("Unique TAG ID : %010llX", id2lo);
e0165dcf 172 PrintAndLog("\nPossible de-scramble patterns");
173 PrintAndLog("HoneyWell IdentKey {");
174 PrintAndLog("DEZ 8 : %08lld",id & 0xFFFFFF);
175 PrintAndLog("DEZ 10 : %010lld",id & 0xFFFFFFFF);
176 PrintAndLog("DEZ 5.5 : %05lld.%05lld",(id>>16LL) & 0xFFFF,(id & 0xFFFF));
177 PrintAndLog("DEZ 3.5A : %03lld.%05lld",(id>>32ll),(id & 0xFFFF));
178 PrintAndLog("DEZ 3.5B : %03lld.%05lld",(id & 0xFF000000) >> 24,(id & 0xFFFF));
179 PrintAndLog("DEZ 3.5C : %03lld.%05lld",(id & 0xFF0000) >> 16,(id & 0xFFFF));
180 PrintAndLog("DEZ 14/IK2 : %014lld",id);
181 PrintAndLog("DEZ 15/IK3 : %015lld",id2lo);
182 PrintAndLog("DEZ 20/ZK : %02lld%02lld%02lld%02lld%02lld%02lld%02lld%02lld%02lld%02lld",
183 (id2lo & 0xf000000000) >> 36,
184 (id2lo & 0x0f00000000) >> 32,
185 (id2lo & 0x00f0000000) >> 28,
186 (id2lo & 0x000f000000) >> 24,
187 (id2lo & 0x0000f00000) >> 20,
188 (id2lo & 0x00000f0000) >> 16,
189 (id2lo & 0x000000f000) >> 12,
190 (id2lo & 0x0000000f00) >> 8,
191 (id2lo & 0x00000000f0) >> 4,
192 (id2lo & 0x000000000f)
193 );
194 uint64_t paxton = (((id>>32) << 24) | (id & 0xffffff)) + 0x143e00;
195 PrintAndLog("}\nOther : %05lld_%03lld_%08lld",(id&0xFFFF),((id>>16LL) & 0xFF),(id & 0xFFFFFF));
2767fc02 196 PrintAndLog("Pattern Paxton : %lld [0x%llX]", paxton, paxton);
e0165dcf 197
198 uint32_t p1id = (id & 0xFFFFFF);
199 uint8_t arr[32] = {0x00};
200 int i =0;
201 int j = 23;
202 for (; i < 24; ++i, --j ){
203 arr[i] = (p1id >> i) & 1;
204 }
205
206 uint32_t p1 = 0;
207
208 p1 |= arr[23] << 21;
209 p1 |= arr[22] << 23;
210 p1 |= arr[21] << 20;
211 p1 |= arr[20] << 22;
212
213 p1 |= arr[19] << 18;
214 p1 |= arr[18] << 16;
215 p1 |= arr[17] << 19;
216 p1 |= arr[16] << 17;
217
218 p1 |= arr[15] << 13;
219 p1 |= arr[14] << 15;
220 p1 |= arr[13] << 12;
221 p1 |= arr[12] << 14;
222
223 p1 |= arr[11] << 6;
224 p1 |= arr[10] << 2;
225 p1 |= arr[9] << 7;
226 p1 |= arr[8] << 1;
227
228 p1 |= arr[7] << 0;
229 p1 |= arr[6] << 8;
230 p1 |= arr[5] << 11;
231 p1 |= arr[4] << 3;
232
233 p1 |= arr[3] << 10;
234 p1 |= arr[2] << 4;
235 p1 |= arr[1] << 5;
236 p1 |= arr[0] << 9;
2767fc02 237 PrintAndLog("Pattern 1 : %d [0x%X]", p1, p1);
e0165dcf 238
239 uint16_t sebury1 = id & 0xFFFF;
240 uint8_t sebury2 = (id >> 16) & 0x7F;
241 uint32_t sebury3 = id & 0x7FFFFF;
2767fc02 242 PrintAndLog("Pattern Sebury : %d %d %d [0x%X 0x%X 0x%X]", sebury1, sebury2, sebury3, sebury1, sebury2, sebury3);
e0165dcf 243 }
244 }
245 return;
eb191de6 246}
247
fef74fdc 248int AskEm410xDecode(bool verbose, uint32_t *hi, uint64_t *lo )
13d77ef9 249{
fef74fdc 250 size_t idx = 0;
251 size_t BitLen = DemodBufferLen;
252 uint8_t BitStream[MAX_GRAPH_TRACE_LEN]={0};
253 memcpy(BitStream, DemodBuffer, BitLen);
254 if (Em410xDecode(BitStream, &BitLen, &idx, hi, lo)){
255 //set GraphBuffer for clone or sim command
256 setDemodBuf(BitStream, BitLen, idx);
e0165dcf 257 if (g_debugMode){
fef74fdc 258 PrintAndLog("DEBUG: idx: %d, Len: %d, Printing Demod Buffer:", idx, BitLen);
e0165dcf 259 printDemodBuff();
260 }
fef74fdc 261 if (verbose){
262 PrintAndLog("EM410x pattern found: ");
263 printEM410x(*hi, *lo);
264 }
e0165dcf 265 return 1;
266 }
267 return 0;
13d77ef9 268}
fef74fdc 269
270int AskEm410xDemod(const char *Cmd, uint32_t *hi, uint64_t *lo, bool verbose)
271{
272 if (!ASKDemod(Cmd, FALSE, FALSE, 1)) return 0;
273 return AskEm410xDecode(verbose, hi, lo);
274}
275
e888ed8e 276//by marshmellow
e770c648 277//takes 3 arguments - clock, invert and maxErr as integers
278//attempts to demodulate ask while decoding manchester
279//prints binary found and saves in graphbuffer for further commands
280int CmdAskEM410xDemod(const char *Cmd)
281{
e0165dcf 282 char cmdp = param_getchar(Cmd, 0);
283 if (strlen(Cmd) > 10 || cmdp == 'h' || cmdp == 'H') {
284 PrintAndLog("Usage: data askem410xdemod [clock] <0|1> [maxError]");
285 PrintAndLog(" [set clock as integer] optional, if not set, autodetect.");
286 PrintAndLog(" <invert>, 1 for invert output");
287 PrintAndLog(" [set maximum allowed errors], default = 100.");
288 PrintAndLog("");
289 PrintAndLog(" sample: data askem410xdemod = demod an EM410x Tag ID from GraphBuffer");
290 PrintAndLog(" : data askem410xdemod 32 = demod an EM410x Tag ID from GraphBuffer using a clock of RF/32");
291 PrintAndLog(" : data askem410xdemod 32 1 = demod an EM410x Tag ID from GraphBuffer using a clock of RF/32 and inverting data");
292 PrintAndLog(" : data askem410xdemod 1 = demod an EM410x Tag ID from GraphBuffer while inverting data");
293 PrintAndLog(" : data askem410xdemod 64 1 0 = demod an EM410x Tag ID from GraphBuffer using a clock of RF/64 and inverting data and allowing 0 demod errors");
294 return 0;
295 }
e0165dcf 296 uint64_t lo = 0;
fef74fdc 297 uint32_t hi = 0;
298 return AskEm410xDemod(Cmd, &hi, &lo, true);
e770c648 299}
300
fef74fdc 301//by marshmellow
302//Cmd Args: Clock, invert, maxErr, maxLen as integers and amplify as char == 'a'
303// (amp may not be needed anymore)
304//verbose will print results and demoding messages
305//emSearch will auto search for EM410x format in bitstream
306//askType switches decode: ask/raw = 0, ask/manchester = 1
307int ASKDemod(const char *Cmd, bool verbose, bool emSearch, uint8_t askType)
e888ed8e 308{
e0165dcf 309 int invert=0;
310 int clk=0;
311 int maxErr=100;
fef74fdc 312 int maxLen=0;
313 uint8_t askAmp = 0;
314 char amp = param_getchar(Cmd, 0);
e0165dcf 315 uint8_t BitStream[MAX_GRAPH_TRACE_LEN]={0};
fef74fdc 316 sscanf(Cmd, "%i %i %i %i %c", &clk, &invert, &maxErr, &maxLen, &amp);
317 if (!maxLen) maxLen = 512*64;
e0165dcf 318 if (invert != 0 && invert != 1) {
319 PrintAndLog("Invalid argument: %s", Cmd);
320 return 0;
321 }
322 if (clk==1){
323 invert=1;
324 clk=0;
325 }
fef74fdc 326 if (amp == 'a' || amp == 'A') askAmp=1;
e0165dcf 327 size_t BitLen = getFromGraphBuf(BitStream);
2767fc02 328 if (g_debugMode) PrintAndLog("DEBUG: Bitlen from grphbuff: %d",BitLen);
fef74fdc 329 if (BitLen<255) return 0;
23f0a7d8 330 if (maxLen<BitLen && maxLen != 0) BitLen = maxLen;
fef74fdc 331
332 int errCnt = askdemod(BitStream, &BitLen, &clk, &invert, maxErr, askAmp, askType);
333 if (errCnt<0 || BitLen<16){ //if fatal error (or -1)
2767fc02 334 if (g_debugMode) PrintAndLog("DEBUG: no data found %d, errors:%d, bitlen:%d, clock:%d",errCnt,invert,BitLen,clk);
e0165dcf 335 return 0;
336 }
2767fc02 337 if (errCnt>maxErr){
338 if (g_debugMode) PrintAndLog("DEBUG: Too many errors found, errors:%d, bits:%d, clock:%d",errCnt, BitLen, clk);
339 return 0;
340 }
341 if (verbose || g_debugMode) PrintAndLog("\nUsing Clock:%d, Invert:%d, Bits Found:%d",clk,invert,BitLen);
e0165dcf 342
343 //output
e0165dcf 344 setDemodBuf(BitStream,BitLen,0);
fef74fdc 345 if (verbose || g_debugMode){
346 if (errCnt>0) PrintAndLog("# Errors during Demoding (shown as 7 in bit stream): %d",errCnt);
347 if (askType) PrintAndLog("ASK/Manchester decoded bitstream:");
348 else PrintAndLog("ASK/Raw decoded bitstream:");
349 // Now output the bitstream to the scrollback by line of 16 bits
350 printDemodBuff();
351
352 }
353 uint64_t lo = 0;
354 uint32_t hi = 0;
e0165dcf 355 if (emSearch){
fef74fdc 356 AskEm410xDecode(true, &hi, &lo);
e0165dcf 357 }
358 return 1;
eb191de6 359}
360
4ac906d1 361//by marshmellow
fef74fdc 362//takes 5 arguments - clock, invert, maxErr, maxLen as integers and amplify as char == 'a'
4ac906d1 363//attempts to demodulate ask while decoding manchester
364//prints binary found and saves in graphbuffer for further commands
365int Cmdaskmandemod(const char *Cmd)
366{
e0165dcf 367 char cmdp = param_getchar(Cmd, 0);
fef74fdc 368 if (strlen(Cmd) > 25 || cmdp == 'h' || cmdp == 'H') {
369 PrintAndLog("Usage: data rawdemod am [clock] <invert> [maxError] [maxLen] [amplify]");
370 PrintAndLog(" [set clock as integer] optional, if not set, autodetect");
371 PrintAndLog(" <invert>, 1 to invert output");
372 PrintAndLog(" [set maximum allowed errors], default = 100");
373 PrintAndLog(" [set maximum Samples to read], default = 32768 (512 bits at rf/64)");
374 PrintAndLog(" <amplify>, 'a' to attempt demod with ask amplification, default = no amp");
e0165dcf 375 PrintAndLog("");
376 PrintAndLog(" sample: data rawdemod am = demod an ask/manchester tag from GraphBuffer");
377 PrintAndLog(" : data rawdemod am 32 = demod an ask/manchester tag from GraphBuffer using a clock of RF/32");
378 PrintAndLog(" : data rawdemod am 32 1 = demod an ask/manchester tag from GraphBuffer using a clock of RF/32 and inverting data");
379 PrintAndLog(" : data rawdemod am 1 = demod an ask/manchester tag from GraphBuffer while inverting data");
380 PrintAndLog(" : data rawdemod am 64 1 0 = demod an ask/manchester tag from GraphBuffer using a clock of RF/64, inverting data and allowing 0 demod errors");
381 return 0;
382 }
fef74fdc 383 return ASKDemod(Cmd, TRUE, TRUE, 1);
4ac906d1 384}
385
eb191de6 386//by marshmellow
d5a72d2f 387//manchester decode
eb191de6 388//stricktly take 10 and 01 and convert to 0 and 1
389int Cmdmandecoderaw(const char *Cmd)
390{
e0165dcf 391 int i =0;
392 int errCnt=0;
393 size_t size=0;
fef74fdc 394 int invert=0;
e0165dcf 395 size_t maxErr = 20;
396 char cmdp = param_getchar(Cmd, 0);
1f918317 397 if (strlen(Cmd) > 5 || cmdp == 'h' || cmdp == 'H') {
fef74fdc 398 PrintAndLog("Usage: data manrawdecode [invert] [maxErr]");
e0165dcf 399 PrintAndLog(" Takes 10 and 01 and converts to 0 and 1 respectively");
400 PrintAndLog(" --must have binary sequence in demodbuffer (run data askrawdemod first)");
fef74fdc 401 PrintAndLog(" [invert] invert output");
1f918317 402 PrintAndLog(" [maxErr] set number of errors allowed (default = 20)");
e0165dcf 403 PrintAndLog("");
404 PrintAndLog(" sample: data manrawdecode = decode manchester bitstream from the demodbuffer");
405 return 0;
406 }
407 if (DemodBufferLen==0) return 0;
408 uint8_t BitStream[MAX_GRAPH_TRACE_LEN]={0};
409 int high=0,low=0;
410 for (;i<DemodBufferLen;++i){
411 if (DemodBuffer[i]>high) high=DemodBuffer[i];
412 else if(DemodBuffer[i]<low) low=DemodBuffer[i];
413 BitStream[i]=DemodBuffer[i];
414 }
1f918317 415 if (high>7 || low <0 ){
2767fc02 416 PrintAndLog("Error: please raw demod the wave first then manchester raw decode");
e0165dcf 417 return 0;
418 }
1f918317 419
fef74fdc 420 sscanf(Cmd, "%i %i", &invert, &maxErr);
e0165dcf 421 size=i;
fef74fdc 422 errCnt=manrawdecode(BitStream, &size, invert);
e0165dcf 423 if (errCnt>=maxErr){
424 PrintAndLog("Too many errors: %d",errCnt);
425 return 0;
426 }
427 PrintAndLog("Manchester Decoded - # errors:%d - data:",errCnt);
2767fc02 428 PrintAndLog("%s", sprint_bin_break(BitStream, size, 16));
e0165dcf 429 if (errCnt==0){
430 uint64_t id = 0;
431 uint32_t hi = 0;
432 size_t idx=0;
433 if (Em410xDecode(BitStream, &size, &idx, &hi, &id)){
434 //need to adjust to set bitstream back to manchester encoded data
435 //setDemodBuf(BitStream, size, idx);
436
437 printEM410x(hi, id);
438 }
439 }
440 return 1;
d5a72d2f 441}
442
443//by marshmellow
444//biphase decode
445//take 01 or 10 = 0 and 11 or 00 = 1
1e090a61 446//takes 2 arguments "offset" default = 0 if 1 it will shift the decode by one bit
447// and "invert" default = 0 if 1 it will invert output
2767fc02 448// the argument offset allows us to manually shift if the output is incorrect - [EDIT: now auto detects]
d5a72d2f 449int CmdBiphaseDecodeRaw(const char *Cmd)
450{
ba1a299c 451 size_t size=0;
b41534d1 452 int offset=0, invert=0, maxErr=20, errCnt=0;
b4fb11ba 453 char cmdp = param_getchar(Cmd, 0);
454 if (strlen(Cmd) > 3 || cmdp == 'h' || cmdp == 'H') {
b41534d1 455 PrintAndLog("Usage: data biphaserawdecode [offset] [invert] [maxErr]");
456 PrintAndLog(" Converts 10 or 01 to 1 and 11 or 00 to 0");
b4fb11ba 457 PrintAndLog(" --must have binary sequence in demodbuffer (run data askrawdemod first)");
e0165dcf 458 PrintAndLog(" --invert for Conditional Dephase Encoding (CDP) AKA Differential Manchester");
b4fb11ba 459 PrintAndLog("");
460 PrintAndLog(" [offset <0|1>], set to 0 not to adjust start position or to 1 to adjust decode start position");
461 PrintAndLog(" [invert <0|1>], set to 1 to invert output");
b41534d1 462 PrintAndLog(" [maxErr int], set max errors tolerated - default=20");
b4fb11ba 463 PrintAndLog("");
464 PrintAndLog(" sample: data biphaserawdecode = decode biphase bitstream from the demodbuffer");
465 PrintAndLog(" sample: data biphaserawdecode 1 1 = decode biphase bitstream from the demodbuffer, set offset, and invert output");
466 return 0;
467 }
b41534d1 468 sscanf(Cmd, "%i %i %i", &offset, &invert, &maxErr);
469 if (DemodBufferLen==0){
470 PrintAndLog("DemodBuffer Empty - run 'data rawdemod ar' first");
b4fb11ba 471 return 0;
472 }
b41534d1 473 uint8_t BitStream[MAX_GRAPH_TRACE_LEN]={0};
474 memcpy(BitStream, DemodBuffer, DemodBufferLen);
475 size = DemodBufferLen;
1e090a61 476 errCnt=BiphaseRawDecode(BitStream, &size, offset, invert);
b41534d1 477 if (errCnt<0){
478 PrintAndLog("Error during decode:%d", errCnt);
479 return 0;
480 }
481 if (errCnt>maxErr){
b4fb11ba 482 PrintAndLog("Too many errors attempting to decode: %d",errCnt);
483 return 0;
484 }
b41534d1 485
486 if (errCnt>0){
2767fc02 487 PrintAndLog("# Errors found during Demod (shown as 7 in bit stream): %d",errCnt);
b41534d1 488 }
489 PrintAndLog("Biphase Decoded using offset: %d - # invert:%d - data:",offset,invert);
2767fc02 490 PrintAndLog("%s", sprint_bin_break(BitStream, size, 16));
b41534d1 491
492 if (offset) setDemodBuf(DemodBuffer,DemodBufferLen-offset, offset); //remove first bit from raw demod
b4fb11ba 493 return 1;
eb191de6 494}
495
b41534d1 496//by marshmellow
497// - ASK Demod then Biphase decode GraphBuffer samples
498int ASKbiphaseDemod(const char *Cmd, bool verbose)
499{
500 //ask raw demod GraphBuffer first
501 int offset=0, clk=0, invert=0, maxErr=0, ans=0;
a71ece51 502 ans = sscanf(Cmd, "%i %i 0 %i", &offset, &clk, &maxErr);
b41534d1 503 if (ans>0)
615f21dd 504 ans = ASKDemod(Cmd+2, FALSE, FALSE, 0);
b41534d1 505 else
fef74fdc 506 ans = ASKDemod(Cmd, FALSE, FALSE, 0);
b41534d1 507 if (!ans) {
fef74fdc 508 if (g_debugMode || verbose) PrintAndLog("Error AskDemod: %d", ans);
b41534d1 509 return 0;
510 }
511
512 //attempt to Biphase decode DemodBuffer
513 size_t size = DemodBufferLen;
514 uint8_t BitStream[MAX_DEMOD_BUF_LEN];
515 memcpy(BitStream, DemodBuffer, DemodBufferLen);
615f21dd 516 int errCnt = BiphaseRawDecode(BitStream, &size, offset, invert);
b41534d1 517 if (errCnt < 0){
518 if (g_debugMode || verbose) PrintAndLog("Error BiphaseRawDecode: %d", errCnt);
519 return 0;
520 }
521 if (errCnt > maxErr) {
522 if (g_debugMode || verbose) PrintAndLog("Error BiphaseRawDecode too many errors: %d", errCnt);
523 return 0;
524 }
525 //success set DemodBuffer and return
526 setDemodBuf(BitStream, size, 0);
527 if (g_debugMode || verbose){
528 PrintAndLog("Biphase Decoded using offset: %d - # errors:%d - data:",offset,errCnt);
529 printDemodBuff();
530 }
531 return 1;
532}
533//by marshmellow - see ASKbiphaseDemod
534int Cmdaskbiphdemod(const char *Cmd)
535{
e0165dcf 536 char cmdp = param_getchar(Cmd, 0);
fef74fdc 537 if (strlen(Cmd) > 25 || cmdp == 'h' || cmdp == 'H') {
538 PrintAndLog("Usage: data rawdemod ab [offset] [clock] <invert> [maxError] [maxLen] <amplify>");
e0165dcf 539 PrintAndLog(" [offset], offset to begin biphase, default=0");
540 PrintAndLog(" [set clock as integer] optional, if not set, autodetect");
541 PrintAndLog(" <invert>, 1 to invert output");
542 PrintAndLog(" [set maximum allowed errors], default = 100");
fef74fdc 543 PrintAndLog(" [set maximum Samples to read], default = 32768 (512 bits at rf/64)");
e0165dcf 544 PrintAndLog(" <amplify>, 'a' to attempt demod with ask amplification, default = no amp");
545 PrintAndLog(" NOTE: <invert> can be entered as second or third argument");
546 PrintAndLog(" NOTE: <amplify> can be entered as first, second or last argument");
547 PrintAndLog(" NOTE: any other arg must have previous args set to work");
548 PrintAndLog("");
549 PrintAndLog(" NOTE: --invert for Conditional Dephase Encoding (CDP) AKA Differential Manchester");
550 PrintAndLog("");
fef74fdc 551 PrintAndLog(" sample: data rawdemod ab = demod an ask/biph tag from GraphBuffer");
552 PrintAndLog(" : data rawdemod ab 0 a = demod an ask/biph tag from GraphBuffer, amplified");
553 PrintAndLog(" : data rawdemod ab 1 32 = demod an ask/biph tag from GraphBuffer using an offset of 1 and a clock of RF/32");
554 PrintAndLog(" : data rawdemod ab 0 32 1 = demod an ask/biph tag from GraphBuffer using a clock of RF/32 and inverting data");
555 PrintAndLog(" : data rawdemod ab 0 1 = demod an ask/biph tag from GraphBuffer while inverting data");
556 PrintAndLog(" : data rawdemod ab 0 64 1 0 = demod an ask/biph tag from GraphBuffer using a clock of RF/64, inverting data and allowing 0 demod errors");
557 PrintAndLog(" : data rawdemod ab 0 64 1 0 0 a = demod an ask/biph tag from GraphBuffer using a clock of RF/64, inverting data and allowing 0 demod errors, and amp");
e0165dcf 558 return 0;
559 }
560 return ASKbiphaseDemod(Cmd, TRUE);
b41534d1 561}
562
8d960002 563//by marshmellow
564//attempts to demodulate and identify a G_Prox_II verex/chubb card
565//WARNING: if it fails during some points it will destroy the DemodBuffer data
566// but will leave the GraphBuffer intact.
567//if successful it will push askraw data back to demod buffer ready for emulation
568int CmdG_Prox_II_Demod(const char *Cmd)
569{
e0165dcf 570 if (!ASKbiphaseDemod(Cmd, FALSE)){
571 if (g_debugMode) PrintAndLog("ASKbiphaseDemod failed 1st try");
572 return 0;
573 }
574 size_t size = DemodBufferLen;
575 //call lfdemod.c demod for gProxII
576 int ans = gProxII_Demod(DemodBuffer, &size);
577 if (ans < 0){
578 if (g_debugMode) PrintAndLog("Error gProxII_Demod");
579 return 0;
580 }
581 //got a good demod
582 uint32_t ByteStream[65] = {0x00};
583 uint8_t xorKey=0;
584 uint8_t keyCnt=0;
585 uint8_t bitCnt=0;
586 uint8_t ByteCnt=0;
587 size_t startIdx = ans + 6; //start after preamble
588 for (size_t idx = 0; idx<size-6; idx++){
589 if ((idx+1) % 5 == 0){
590 //spacer bit - should be 0
591 if (DemodBuffer[startIdx+idx] != 0) {
592 if (g_debugMode) PrintAndLog("Error spacer not 0: %d, pos: %d",DemodBuffer[startIdx+idx],startIdx+idx);
593 return 0;
594 }
595 continue;
596 }
597 if (keyCnt<8){ //lsb first
598 xorKey = xorKey | (DemodBuffer[startIdx+idx]<<keyCnt);
599 keyCnt++;
600 if (keyCnt==8 && g_debugMode) PrintAndLog("xorKey Found: %02x", xorKey);
601 continue;
602 }
603 //lsb first
604 ByteStream[ByteCnt] = ByteStream[ByteCnt] | (DemodBuffer[startIdx+idx]<<bitCnt);
605 bitCnt++;
606 if (bitCnt % 8 == 0){
607 if (g_debugMode) PrintAndLog("byte %d: %02x",ByteCnt,ByteStream[ByteCnt]);
608 bitCnt=0;
609 ByteCnt++;
610 }
611 }
612 for (uint8_t i = 0; i < ByteCnt; i++){
613 ByteStream[i] ^= xorKey; //xor
614 if (g_debugMode) PrintAndLog("byte %d after xor: %02x", i, ByteStream[i]);
615 }
616 //now ByteStream contains 64 bytes of decrypted raw tag data
617 //
618 uint8_t fmtLen = ByteStream[0]>>2;
619 uint32_t FC = 0;
620 uint32_t Card = 0;
621 uint32_t raw1 = bytebits_to_byte(DemodBuffer+ans,32);
622 uint32_t raw2 = bytebits_to_byte(DemodBuffer+ans+32, 32);
623 uint32_t raw3 = bytebits_to_byte(DemodBuffer+ans+64, 32);
624
625 if (fmtLen==36){
626 FC = ((ByteStream[3] & 0x7F)<<7) | (ByteStream[4]>>1);
627 Card = ((ByteStream[4]&1)<<19) | (ByteStream[5]<<11) | (ByteStream[6]<<3) | (ByteStream[7]>>5);
628 PrintAndLog("G-Prox-II Found: FmtLen %d, FC %d, Card %d",fmtLen,FC,Card);
629 } else if(fmtLen==26){
630 FC = ((ByteStream[3] & 0x7F)<<1) | (ByteStream[4]>>7);
631 Card = ((ByteStream[4]&0x7F)<<9) | (ByteStream[5]<<1) | (ByteStream[6]>>7);
632 PrintAndLog("G-Prox-II Found: FmtLen %d, FC %d, Card %d",fmtLen,FC,Card);
633 } else {
634 PrintAndLog("Unknown G-Prox-II Fmt Found: FmtLen %d",fmtLen);
635 }
636 PrintAndLog("Raw: %08x%08x%08x", raw1,raw2,raw3);
637 setDemodBuf(DemodBuffer+ans, 96, 0);
638 return 1;
8d960002 639}
640
fef74fdc 641//by marshmellow - see ASKDemod
4ac906d1 642int Cmdaskrawdemod(const char *Cmd)
643{
e0165dcf 644 char cmdp = param_getchar(Cmd, 0);
fef74fdc 645 if (strlen(Cmd) > 25 || cmdp == 'h' || cmdp == 'H') {
646 PrintAndLog("Usage: data rawdemod ar [clock] <invert> [maxError] [maxLen] [amplify]");
e0165dcf 647 PrintAndLog(" [set clock as integer] optional, if not set, autodetect");
648 PrintAndLog(" <invert>, 1 to invert output");
649 PrintAndLog(" [set maximum allowed errors], default = 100");
fef74fdc 650 PrintAndLog(" [set maximum Samples to read], default = 32768 (1024 bits at rf/64)");
e0165dcf 651 PrintAndLog(" <amplify>, 'a' to attempt demod with ask amplification, default = no amp");
652 PrintAndLog("");
fef74fdc 653 PrintAndLog(" sample: data rawdemod ar = demod an ask tag from GraphBuffer");
654 PrintAndLog(" : data rawdemod ar a = demod an ask tag from GraphBuffer, amplified");
655 PrintAndLog(" : data rawdemod ar 32 = demod an ask tag from GraphBuffer using a clock of RF/32");
656 PrintAndLog(" : data rawdemod ar 32 1 = demod an ask tag from GraphBuffer using a clock of RF/32 and inverting data");
657 PrintAndLog(" : data rawdemod ar 1 = demod an ask tag from GraphBuffer while inverting data");
658 PrintAndLog(" : data rawdemod ar 64 1 0 = demod an ask tag from GraphBuffer using a clock of RF/64, inverting data and allowing 0 demod errors");
659 PrintAndLog(" : data rawdemod ar 64 1 0 0 a = demod an ask tag from GraphBuffer using a clock of RF/64, inverting data and allowing 0 demod errors, and amp");
e0165dcf 660 return 0;
661 }
fef74fdc 662 return ASKDemod(Cmd, TRUE, FALSE, 0);
4ac906d1 663}
664
73d04bb4 665int AutoCorrelate(int window, bool SaveGrph, bool verbose)
7fe9b0b7 666{
e0165dcf 667 static int CorrelBuffer[MAX_GRAPH_TRACE_LEN];
668 size_t Correlation = 0;
669 int maxSum = 0;
670 int lastMax = 0;
671 if (verbose) PrintAndLog("performing %d correlations", GraphTraceLen - window);
672 for (int i = 0; i < GraphTraceLen - window; ++i) {
673 int sum = 0;
674 for (int j = 0; j < window; ++j) {
675 sum += (GraphBuffer[j]*GraphBuffer[i + j]) / 256;
676 }
677 CorrelBuffer[i] = sum;
678 if (sum >= maxSum-100 && sum <= maxSum+100){
679 //another max
680 Correlation = i-lastMax;
681 lastMax = i;
682 if (sum > maxSum) maxSum = sum;
683 } else if (sum > maxSum){
684 maxSum=sum;
685 lastMax = i;
686 }
687 }
688 if (Correlation==0){
689 //try again with wider margin
690 for (int i = 0; i < GraphTraceLen - window; i++){
691 if (CorrelBuffer[i] >= maxSum-(maxSum*0.05) && CorrelBuffer[i] <= maxSum+(maxSum*0.05)){
692 //another max
693 Correlation = i-lastMax;
694 lastMax = i;
695 //if (CorrelBuffer[i] > maxSum) maxSum = sum;
696 }
697 }
698 }
699 if (verbose && Correlation > 0) PrintAndLog("Possible Correlation: %d samples",Correlation);
700
701 if (SaveGrph){
702 GraphTraceLen = GraphTraceLen - window;
703 memcpy(GraphBuffer, CorrelBuffer, GraphTraceLen * sizeof (int));
704 RepaintGraphWindow();
705 }
706 return Correlation;
73d04bb4 707}
7fe9b0b7 708
9f7bbd24 709int usage_data_autocorr(void)
710{
e0165dcf 711 //print help
712 PrintAndLog("Usage: data autocorr [window] [g]");
713 PrintAndLog("Options: ");
714 PrintAndLog(" h This help");
715 PrintAndLog(" [window] window length for correlation - default = 4000");
716 PrintAndLog(" g save back to GraphBuffer (overwrite)");
717 return 0;
9f7bbd24 718}
719
73d04bb4 720int CmdAutoCorr(const char *Cmd)
721{
e0165dcf 722 char cmdp = param_getchar(Cmd, 0);
723 if (cmdp == 'h' || cmdp == 'H')
724 return usage_data_autocorr();
725 int window = 4000; //set default
726 char grph=0;
727 bool updateGrph = FALSE;
728 sscanf(Cmd, "%i %c", &window, &grph);
729
730 if (window >= GraphTraceLen) {
731 PrintAndLog("window must be smaller than trace (%d samples)",
732 GraphTraceLen);
733 return 0;
734 }
735 if (grph == 'g') updateGrph=TRUE;
736 return AutoCorrelate(window, updateGrph, TRUE);
7fe9b0b7 737}
738
739int CmdBitsamples(const char *Cmd)
740{
e0165dcf 741 int cnt = 0;
742 uint8_t got[12288];
952a8bb5 743
e0165dcf 744 GetFromBigBuf(got,sizeof(got),0);
745 WaitForResponse(CMD_ACK,NULL);
7fe9b0b7 746
e0165dcf 747 for (int j = 0; j < sizeof(got); j++) {
748 for (int k = 0; k < 8; k++) {
749 if(got[j] & (1 << (7 - k))) {
750 GraphBuffer[cnt++] = 1;
751 } else {
752 GraphBuffer[cnt++] = 0;
753 }
754 }
755 }
756 GraphTraceLen = cnt;
757 RepaintGraphWindow();
758 return 0;
7fe9b0b7 759}
760
7fe9b0b7 761int CmdBuffClear(const char *Cmd)
762{
e0165dcf 763 UsbCommand c = {CMD_BUFF_CLEAR};
764 SendCommand(&c);
765 ClearGraph(true);
766 return 0;
7fe9b0b7 767}
768
769int CmdDec(const char *Cmd)
770{
e0165dcf 771 for (int i = 0; i < (GraphTraceLen / 2); ++i)
772 GraphBuffer[i] = GraphBuffer[i * 2];
773 GraphTraceLen /= 2;
774 PrintAndLog("decimated by 2");
775 RepaintGraphWindow();
776 return 0;
7fe9b0b7 777}
698b649e
MHS		 778/**
779 * Undecimate - I'd call it 'interpolate', but we'll save that
780 * name until someone does an actual interpolation command, not just
781 * blindly repeating samples
782 * @param Cmd
783 * @return
784 */
785int CmdUndec(const char *Cmd)
786{
c856ceae
MHS		 787 if(param_getchar(Cmd, 0) == 'h')
788 {
789 PrintAndLog("Usage: data undec [factor]");
790 PrintAndLog("This function performs un-decimation, by repeating each sample N times");
791 PrintAndLog("Options: ");
792 PrintAndLog(" h This help");
793 PrintAndLog(" factor The number of times to repeat each sample.[default:2]");
794 PrintAndLog("Example: 'data undec 3'");
795 return 0;
796 }
797
798 uint8_t factor = param_get8ex(Cmd, 0,2, 10);
698b649e
MHS		 799 //We have memory, don't we?
800 int swap[MAX_GRAPH_TRACE_LEN] = { 0 };
c856ceae
MHS		 801 uint32_t g_index = 0 ,s_index = 0;
802 while(g_index < GraphTraceLen && s_index < MAX_GRAPH_TRACE_LEN)
698b649e 803 {
c856ceae
MHS		 804 int count = 0;
805 for(count = 0; count < factor && s_index+count < MAX_GRAPH_TRACE_LEN; count ++)
806 swap[s_index+count] = GraphBuffer[g_index];
807 s_index+=count;
698b649e 808 }
698b649e 809
c856ceae
MHS		 810 memcpy(GraphBuffer,swap, s_index * sizeof(int));
811 GraphTraceLen = s_index;
812 RepaintGraphWindow();
698b649e
MHS		 813 return 0;
814}
7fe9b0b7 815
ec75f5c1 816//by marshmellow
817//shift graph zero up or down based on input + or -
818int CmdGraphShiftZero(const char *Cmd)
819{
820
e0165dcf 821 int shift=0;
822 //set options from parameters entered with the command
823 sscanf(Cmd, "%i", &shift);
824 int shiftedVal=0;
825 for(int i = 0; i<GraphTraceLen; i++){
826 shiftedVal=GraphBuffer[i]+shift;
827 if (shiftedVal>127)
828 shiftedVal=127;
829 else if (shiftedVal<-127)
830 shiftedVal=-127;
831 GraphBuffer[i]= shiftedVal;
832 }
833 CmdNorm("");
834 return 0;
ec75f5c1 835}
836
6de43508 837//by marshmellow
838//use large jumps in read samples to identify edges of waves and then amplify that wave to max
2767fc02 839//similar to dirtheshold, threshold commands
6de43508 840//takes a threshold length which is the measured length between two samples then determines an edge
841int CmdAskEdgeDetect(const char *Cmd)
842{
e0165dcf 843 int thresLen = 25;
844 sscanf(Cmd, "%i", &thresLen);
49bbc60a 845
e0165dcf 846 for(int i = 1; i<GraphTraceLen; i++){
847 if (GraphBuffer[i]-GraphBuffer[i-1]>=thresLen) //large jump up
49bbc60a 848 GraphBuffer[i-1] = 127;
e0165dcf 849 else if(GraphBuffer[i]-GraphBuffer[i-1]<=-1*thresLen) //large jump down
49bbc60a 850 GraphBuffer[i-1] = -127;
e0165dcf 851 }
852 RepaintGraphWindow();
e0165dcf 853 return 0;
6de43508 854}
855
7fe9b0b7 856/* Print our clock rate */
ba1a299c 857// uses data from graphbuffer
f3bf15e4 858// adjusted to take char parameter for type of modulation to find the clock - by marshmellow.
7fe9b0b7 859int CmdDetectClockRate(const char *Cmd)
860{
f3bf15e4 861 char cmdp = param_getchar(Cmd, 0);
fef74fdc 862 if (strlen(Cmd) > 6 || strlen(Cmd) == 0 || cmdp == 'h' || cmdp == 'H') {
863 PrintAndLog("Usage: data detectclock [modulation] <clock>");
f3bf15e4 864 PrintAndLog(" [modulation as char], specify the modulation type you want to detect the clock of");
fef74fdc 865 PrintAndLog(" <clock> , specify the clock (optional - to get best start position only)");
f3bf15e4 866 PrintAndLog(" 'a' = ask, 'f' = fsk, 'n' = nrz/direct, 'p' = psk");
867 PrintAndLog("");
868 PrintAndLog(" sample: data detectclock a = detect the clock of an ask modulated wave in the GraphBuffer");
869 PrintAndLog(" data detectclock f = detect the clock of an fsk modulated wave in the GraphBuffer");
870 PrintAndLog(" data detectclock p = detect the clock of an psk modulated wave in the GraphBuffer");
871 PrintAndLog(" data detectclock n = detect the clock of an nrz/direct modulated wave in the GraphBuffer");
872 }
873 int ans=0;
874 if (cmdp == 'a'){
fef74fdc 875 ans = GetAskClock(Cmd+1, true, false);
f3bf15e4 876 } else if (cmdp == 'f'){
877 ans = GetFskClock("", true, false);
878 } else if (cmdp == 'n'){
879 ans = GetNrzClock("", true, false);
880 } else if (cmdp == 'p'){
881 ans = GetPskClock("", true, false);
882 } else {
883 PrintAndLog ("Please specify a valid modulation to detect the clock of - see option h for help");
884 }
885 return ans;
7fe9b0b7 886}
66707a3b 887
2767fc02 888char *GetFSKType(uint8_t fchigh, uint8_t fclow, uint8_t invert)
889{
890 char *fskType;
891 if (fchigh==10 && fclow==8){
892 if (invert) //fsk2a
893 fskType = "FSK2a";
894 else //fsk2
895 fskType = "FSK2";
896 } else if (fchigh == 8 && fclow == 5) {
897 if (invert)
898 fskType = "FSK1";
899 else
900 fskType = "FSK1a";
901 } else {
902 fskType = "FSK??";
903 }
904 return fskType;
905}
906
2fc2150e 907//by marshmellow
eb191de6 908//fsk raw demod and print binary
6de43508 909//takes 4 arguments - Clock, invert, fchigh, fclow
910//defaults: clock = 50, invert=1, fchigh=10, fclow=8 (RF/10 RF/8 (fsk2a))
4ac906d1 911int FSKrawDemod(const char *Cmd, bool verbose)
b3b70669 912{
e0165dcf 913 //raw fsk demod no manchester decoding no start bit finding just get binary from wave
914 //set defaults
915 int rfLen = 0;
916 int invert = 0;
917 int fchigh = 0;
918 int fclow = 0;
919
920 //set options from parameters entered with the command
921 sscanf(Cmd, "%i %i %i %i", &rfLen, &invert, &fchigh, &fclow);
922
923 if (strlen(Cmd)>0 && strlen(Cmd)<=2) {
924 if (rfLen==1){
2eec55c8 925 invert = 1; //if invert option only is used
e0165dcf 926 rfLen = 0;
927 }
928 }
929
930 uint8_t BitStream[MAX_GRAPH_TRACE_LEN]={0};
931 size_t BitLen = getFromGraphBuf(BitStream);
932 if (BitLen==0) return 0;
933 //get field clock lengths
934 uint16_t fcs=0;
e0165dcf 935 if (fchigh==0 || fclow == 0){
2eec55c8 936 fcs = countFC(BitStream, BitLen, 1);
e0165dcf 937 if (fcs==0){
938 fchigh=10;
939 fclow=8;
940 }else{
941 fchigh = (fcs >> 8) & 0xFF;
942 fclow = fcs & 0xFF;
943 }
944 }
945 //get bit clock length
946 if (rfLen==0){
947 rfLen = detectFSKClk(BitStream, BitLen, fchigh, fclow);
948 if (rfLen == 0) rfLen = 50;
949 }
e0165dcf 950 int size = fskdemod(BitStream,BitLen,(uint8_t)rfLen,(uint8_t)invert,(uint8_t)fchigh,(uint8_t)fclow);
951 if (size>0){
952 setDemodBuf(BitStream,size,0);
953
954 // Now output the bitstream to the scrollback by line of 16 bits
2767fc02 955 if (verbose || g_debugMode) {
956 PrintAndLog("\nUsing Clock:%d, invert:%d, fchigh:%d, fclow:%d", rfLen, invert, fchigh, fclow);
957 PrintAndLog("%s decoded bitstream:",GetFSKType(fchigh,fclow,invert));
958 printDemodBuff();
e0165dcf 959 }
960
961 return 1;
962 } else{
2767fc02 963 if (g_debugMode) PrintAndLog("no FSK data found");
e0165dcf 964 }
965 return 0;
b3b70669 966}
967
4ac906d1 968//by marshmellow
969//fsk raw demod and print binary
970//takes 4 arguments - Clock, invert, fchigh, fclow
971//defaults: clock = 50, invert=1, fchigh=10, fclow=8 (RF/10 RF/8 (fsk2a))
972int CmdFSKrawdemod(const char *Cmd)
973{
e0165dcf 974 char cmdp = param_getchar(Cmd, 0);
975 if (strlen(Cmd) > 10 || cmdp == 'h' || cmdp == 'H') {
976 PrintAndLog("Usage: data rawdemod fs [clock] <invert> [fchigh] [fclow]");
977 PrintAndLog(" [set clock as integer] optional, omit for autodetect.");
978 PrintAndLog(" <invert>, 1 for invert output, can be used even if the clock is omitted");
979 PrintAndLog(" [fchigh], larger field clock length, omit for autodetect");
980 PrintAndLog(" [fclow], small field clock length, omit for autodetect");
981 PrintAndLog("");
982 PrintAndLog(" sample: data rawdemod fs = demod an fsk tag from GraphBuffer using autodetect");
983 PrintAndLog(" : data rawdemod fs 32 = demod an fsk tag from GraphBuffer using a clock of RF/32, autodetect fc");
984 PrintAndLog(" : data rawdemod fs 1 = demod an fsk tag from GraphBuffer using autodetect, invert output");
985 PrintAndLog(" : data rawdemod fs 32 1 = demod an fsk tag from GraphBuffer using a clock of RF/32, invert output, autodetect fc");
986 PrintAndLog(" : data rawdemod fs 64 0 8 5 = demod an fsk1 RF/64 tag from GraphBuffer");
987 PrintAndLog(" : data rawdemod fs 50 0 10 8 = demod an fsk2 RF/50 tag from GraphBuffer");
988 PrintAndLog(" : data rawdemod fs 50 1 10 8 = demod an fsk2a RF/50 tag from GraphBuffer");
989 return 0;
990 }
991 return FSKrawDemod(Cmd, TRUE);
4ac906d1 992}
993
eb191de6 994//by marshmellow (based on existing demod + holiman's refactor)
995//HID Prox demod - FSK RF/50 with preamble of 00011101 (then manchester encoded)
996//print full HID Prox ID and some bit format details if found
b3b70669 997int CmdFSKdemodHID(const char *Cmd)
998{
e0165dcf 999 //raw fsk demod no manchester decoding no start bit finding just get binary from wave
1000 uint32_t hi2=0, hi=0, lo=0;
1001
1002 uint8_t BitStream[MAX_GRAPH_TRACE_LEN]={0};
1003 size_t BitLen = getFromGraphBuf(BitStream);
1004 if (BitLen==0) return 0;
1005 //get binary from fsk wave
1006 int idx = HIDdemodFSK(BitStream,&BitLen,&hi2,&hi,&lo);
1007 if (idx<0){
1008 if (g_debugMode){
1009 if (idx==-1){
1010 PrintAndLog("DEBUG: Just Noise Detected");
1011 } else if (idx == -2) {
1012 PrintAndLog("DEBUG: Error demoding fsk");
1013 } else if (idx == -3) {
1014 PrintAndLog("DEBUG: Preamble not found");
1015 } else if (idx == -4) {
1016 PrintAndLog("DEBUG: Error in Manchester data, SIZE: %d", BitLen);
1017 } else {
1018 PrintAndLog("DEBUG: Error demoding fsk %d", idx);
1019 }
1020 }
1021 return 0;
1022 }
1023 if (hi2==0 && hi==0 && lo==0) {
1024 if (g_debugMode) PrintAndLog("DEBUG: Error - no values found");
1025 return 0;
1026 }
1027 if (hi2 != 0){ //extra large HID tags
1028 PrintAndLog("HID Prox TAG ID: %x%08x%08x (%d)",
1029 (unsigned int) hi2, (unsigned int) hi, (unsigned int) lo, (unsigned int) (lo>>1) & 0xFFFF);
1030 }
1031 else { //standard HID tags <38 bits
1032 uint8_t fmtLen = 0;
1033 uint32_t fc = 0;
1034 uint32_t cardnum = 0;
1035 if (((hi>>5)&1)==1){//if bit 38 is set then < 37 bit format is used
1036 uint32_t lo2=0;
1037 lo2=(((hi & 31) << 12) | (lo>>20)); //get bits 21-37 to check for format len bit
1038 uint8_t idx3 = 1;
1039 while(lo2>1){ //find last bit set to 1 (format len bit)
1040 lo2=lo2>>1;
1041 idx3++;
1042 }
1043 fmtLen =idx3+19;
1044 fc =0;
1045 cardnum=0;
1046 if(fmtLen==26){
1047 cardnum = (lo>>1)&0xFFFF;
1048 fc = (lo>>17)&0xFF;
1049 }
1050 if(fmtLen==34){
1051 cardnum = (lo>>1)&0xFFFF;
1052 fc= ((hi&1)<<15)|(lo>>17);
1053 }
1054 if(fmtLen==35){
1055 cardnum = (lo>>1)&0xFFFFF;
1056 fc = ((hi&1)<<11)|(lo>>21);
1057 }
1058 }
1059 else { //if bit 38 is not set then 37 bit format is used
1060 fmtLen = 37;
1061 fc = 0;
1062 cardnum = 0;
1063 if(fmtLen == 37){
1064 cardnum = (lo>>1)&0x7FFFF;
1065 fc = ((hi&0xF)<<12)|(lo>>20);
1066 }
1067 }
1068 PrintAndLog("HID Prox TAG ID: %x%08x (%d) - Format Len: %dbit - FC: %d - Card: %d",
1069 (unsigned int) hi, (unsigned int) lo, (unsigned int) (lo>>1) & 0xFFFF,
1070 (unsigned int) fmtLen, (unsigned int) fc, (unsigned int) cardnum);
1071 }
1072 setDemodBuf(BitStream,BitLen,idx);
1073 if (g_debugMode){
1074 PrintAndLog("DEBUG: idx: %d, Len: %d, Printing Demod Buffer:", idx, BitLen);
1075 printDemodBuff();
1076 }
1077 return 1;
ec75f5c1 1078}
1079
04d2721b 1080//by marshmellow
1081//Paradox Prox demod - FSK RF/50 with preamble of 00001111 (then manchester encoded)
ec75f5c1 1082//print full Paradox Prox ID and some bit format details if found
1083int CmdFSKdemodParadox(const char *Cmd)
1084{
e0165dcf 1085 //raw fsk demod no manchester decoding no start bit finding just get binary from wave
1086 uint32_t hi2=0, hi=0, lo=0;
1087
1088 uint8_t BitStream[MAX_GRAPH_TRACE_LEN]={0};
1089 size_t BitLen = getFromGraphBuf(BitStream);
1090 if (BitLen==0) return 0;
1091 //get binary from fsk wave
1092 int idx = ParadoxdemodFSK(BitStream,&BitLen,&hi2,&hi,&lo);
1093 if (idx<0){
1094 if (g_debugMode){
1095 if (idx==-1){
1096 PrintAndLog("DEBUG: Just Noise Detected");
1097 } else if (idx == -2) {
1098 PrintAndLog("DEBUG: Error demoding fsk");
1099 } else if (idx == -3) {
1100 PrintAndLog("DEBUG: Preamble not found");
1101 } else if (idx == -4) {
1102 PrintAndLog("DEBUG: Error in Manchester data");
1103 } else {
1104 PrintAndLog("DEBUG: Error demoding fsk %d", idx);
1105 }
1106 }
1107 return 0;
1108 }
1109 if (hi2==0 && hi==0 && lo==0){
1110 if (g_debugMode) PrintAndLog("DEBUG: Error - no value found");
1111 return 0;
1112 }
1113 uint32_t fc = ((hi & 0x3)<<6) | (lo>>26);
1114 uint32_t cardnum = (lo>>10)&0xFFFF;
1115 uint32_t rawLo = bytebits_to_byte(BitStream+idx+64,32);
1116 uint32_t rawHi = bytebits_to_byte(BitStream+idx+32,32);
1117 uint32_t rawHi2 = bytebits_to_byte(BitStream+idx,32);
1118
1119 PrintAndLog("Paradox TAG ID: %x%08x - FC: %d - Card: %d - Checksum: %02x - RAW: %08x%08x%08x",
1120 hi>>10, (hi & 0x3)<<26 | (lo>>10), fc, cardnum, (lo>>2) & 0xFF, rawHi2, rawHi, rawLo);
1121 setDemodBuf(BitStream,BitLen,idx);
1122 if (g_debugMode){
1123 PrintAndLog("DEBUG: idx: %d, len: %d, Printing Demod Buffer:", idx, BitLen);
1124 printDemodBuff();
1125 }
1126 return 1;
b3b70669 1127}
1128
2fc2150e 1129//by marshmellow
eb191de6 1130//IO-Prox demod - FSK RF/64 with preamble of 000000001
1131//print ioprox ID and some format details
b3b70669 1132int CmdFSKdemodIO(const char *Cmd)
1133{
e0165dcf 1134 //raw fsk demod no manchester decoding no start bit finding just get binary from wave
1135 //set defaults
1136 int idx=0;
1137 //something in graphbuffer?
1138 if (GraphTraceLen < 65) {
1139 if (g_debugMode)PrintAndLog("DEBUG: not enough samples in GraphBuffer");
1140 return 0;
1141 }
1142 uint8_t BitStream[MAX_GRAPH_TRACE_LEN]={0};
1143 size_t BitLen = getFromGraphBuf(BitStream);
1144 if (BitLen==0) return 0;
1145
1146 //get binary from fsk wave
1147 idx = IOdemodFSK(BitStream,BitLen);
1148 if (idx<0){
1149 if (g_debugMode){
1150 if (idx==-1){
1151 PrintAndLog("DEBUG: Just Noise Detected");
1152 } else if (idx == -2) {
1153 PrintAndLog("DEBUG: not enough samples");
1154 } else if (idx == -3) {
1155 PrintAndLog("DEBUG: error during fskdemod");
1156 } else if (idx == -4) {
1157 PrintAndLog("DEBUG: Preamble not found");
1158 } else if (idx == -5) {
1159 PrintAndLog("DEBUG: Separator bits not found");
1160 } else {
1161 PrintAndLog("DEBUG: Error demoding fsk %d", idx);
1162 }
1163 }
1164 return 0;
1165 }
1166 if (idx==0){
2767fc02 1167 if (g_debugMode){
e0165dcf 1168 PrintAndLog("DEBUG: IO Prox Data not found - FSK Bits: %d",BitLen);
2767fc02 1169 if (BitLen > 92) PrintAndLog("%s", sprint_bin_break(BitStream,92,16));
e0165dcf 1170 }
1171 return 0;
1172 }
1173 //Index map
1174 //0 10 20 30 40 50 60
1175 //| | | | | | |
1176 //01234567 8 90123456 7 89012345 6 78901234 5 67890123 4 56789012 3 45678901 23
1177 //-----------------------------------------------------------------------------
1178 //00000000 0 11110000 1 facility 1 version* 1 code*one 1 code*two 1 ???????? 11
1179 //
1180 //XSF(version)facility:codeone+codetwo (raw)
1181 //Handle the data
1182 if (idx+64>BitLen) {
2767fc02 1183 if (g_debugMode) PrintAndLog("not enough bits found - bitlen: %d",BitLen);
e0165dcf 1184 return 0;
1185 }
1186 PrintAndLog("%d%d%d%d%d%d%d%d %d",BitStream[idx], BitStream[idx+1], BitStream[idx+2], BitStream[idx+3], BitStream[idx+4], BitStream[idx+5], BitStream[idx+6], BitStream[idx+7], BitStream[idx+8]);
1187 PrintAndLog("%d%d%d%d%d%d%d%d %d",BitStream[idx+9], BitStream[idx+10], BitStream[idx+11],BitStream[idx+12],BitStream[idx+13],BitStream[idx+14],BitStream[idx+15],BitStream[idx+16],BitStream[idx+17]);
1188 PrintAndLog("%d%d%d%d%d%d%d%d %d facility",BitStream[idx+18], BitStream[idx+19], BitStream[idx+20],BitStream[idx+21],BitStream[idx+22],BitStream[idx+23],BitStream[idx+24],BitStream[idx+25],BitStream[idx+26]);
1189 PrintAndLog("%d%d%d%d%d%d%d%d %d version",BitStream[idx+27], BitStream[idx+28], BitStream[idx+29],BitStream[idx+30],BitStream[idx+31],BitStream[idx+32],BitStream[idx+33],BitStream[idx+34],BitStream[idx+35]);
1190 PrintAndLog("%d%d%d%d%d%d%d%d %d code1",BitStream[idx+36], BitStream[idx+37], BitStream[idx+38],BitStream[idx+39],BitStream[idx+40],BitStream[idx+41],BitStream[idx+42],BitStream[idx+43],BitStream[idx+44]);
1191 PrintAndLog("%d%d%d%d%d%d%d%d %d code2",BitStream[idx+45], BitStream[idx+46], BitStream[idx+47],BitStream[idx+48],BitStream[idx+49],BitStream[idx+50],BitStream[idx+51],BitStream[idx+52],BitStream[idx+53]);
1192 PrintAndLog("%d%d%d%d%d%d%d%d %d%d checksum",BitStream[idx+54],BitStream[idx+55],BitStream[idx+56],BitStream[idx+57],BitStream[idx+58],BitStream[idx+59],BitStream[idx+60],BitStream[idx+61],BitStream[idx+62],BitStream[idx+63]);
1193
1194 uint32_t code = bytebits_to_byte(BitStream+idx,32);
1195 uint32_t code2 = bytebits_to_byte(BitStream+idx+32,32);
1196 uint8_t version = bytebits_to_byte(BitStream+idx+27,8); //14,4
1197 uint8_t facilitycode = bytebits_to_byte(BitStream+idx+18,8) ;
1198 uint16_t number = (bytebits_to_byte(BitStream+idx+36,8)<<8)|(bytebits_to_byte(BitStream+idx+45,8)); //36,9
1199 uint8_t crc = bytebits_to_byte(BitStream+idx+54,8);
1200 uint16_t calccrc = 0;
1201
1202 for (uint8_t i=1; i<6; ++i){
1203 calccrc += bytebits_to_byte(BitStream+idx+9*i,8);
e0165dcf 1204 }
1205 calccrc &= 0xff;
1206 calccrc = 0xff - calccrc;
1207
1208 char *crcStr = (crc == calccrc) ? "crc ok": "!crc";
1209
1210 PrintAndLog("IO Prox XSF(%02d)%02x:%05d (%08x%08x) [%02x %s]",version,facilitycode,number,code,code2, crc, crcStr);
1211 setDemodBuf(BitStream,64,idx);
1212 if (g_debugMode){
1213 PrintAndLog("DEBUG: idx: %d, Len: %d, Printing demod buffer:",idx,64);
1214 printDemodBuff();
1215 }
1216 return 1;
b3b70669 1217}
1e090a61 1218
1e090a61 1219//by marshmellow
1220//AWID Prox demod - FSK RF/50 with preamble of 00000001 (always a 96 bit data stream)
1221//print full AWID Prox ID and some bit format details if found
1222int CmdFSKdemodAWID(const char *Cmd)
1223{
1224
e0165dcf 1225 //int verbose=1;
1226 //sscanf(Cmd, "%i", &verbose);
1227
1228 //raw fsk demod no manchester decoding no start bit finding just get binary from wave
1229 uint8_t BitStream[MAX_GRAPH_TRACE_LEN]={0};
1230 size_t size = getFromGraphBuf(BitStream);
1231 if (size==0) return 0;
1232
1233 //get binary from fsk wave
1234 int idx = AWIDdemodFSK(BitStream, &size);
1235 if (idx<=0){
1236 if (g_debugMode==1){
1237 if (idx == -1)
1238 PrintAndLog("DEBUG: Error - not enough samples");
1239 else if (idx == -2)
1240 PrintAndLog("DEBUG: Error - only noise found");
1241 else if (idx == -3)
1242 PrintAndLog("DEBUG: Error - problem during FSK demod");
1243 else if (idx == -4)
1244 PrintAndLog("DEBUG: Error - AWID preamble not found");
1245 else if (idx == -5)
1246 PrintAndLog("DEBUG: Error - Size not correct: %d", size);
1247 else
1248 PrintAndLog("DEBUG: Error %d",idx);
1249 }
1250 return 0;
1251 }
1252
1253 // Index map
1254 // 0 10 20 30 40 50 60
1255 // | | | | | | |
1256 // 01234567 890 1 234 5 678 9 012 3 456 7 890 1 234 5 678 9 012 3 456 7 890 1 234 5 678 9 012 3 - to 96
1257 // -----------------------------------------------------------------------------
1258 // 00000001 000 1 110 1 101 1 011 1 101 1 010 0 000 1 000 1 010 0 001 0 110 1 100 0 000 1 000 1
1259 // premable bbb o bbb o bbw o fff o fff o ffc o ccc o ccc o ccc o ccc o ccc o wxx o xxx o xxx o - to 96
1260 // |---26 bit---| |-----117----||-------------142-------------|
1261 // b = format bit len, o = odd parity of last 3 bits
1262 // f = facility code, c = card number
1263 // w = wiegand parity
1264 // (26 bit format shown)
1e090a61 1265
e0165dcf 1266 //get raw ID before removing parities
1267 uint32_t rawLo = bytebits_to_byte(BitStream+idx+64,32);
1268 uint32_t rawHi = bytebits_to_byte(BitStream+idx+32,32);
1269 uint32_t rawHi2 = bytebits_to_byte(BitStream+idx,32);
1270 setDemodBuf(BitStream,96,idx);
1271
1272 size = removeParity(BitStream, idx+8, 4, 1, 88);
1273 if (size != 66){
1274 if (g_debugMode==1) PrintAndLog("DEBUG: Error - at parity check-tag size does not match AWID format");
1275 return 0;
1276 }
1277 // ok valid card found!
1278
1279 // Index map
1280 // 0 10 20 30 40 50 60
1281 // | | | | | | |
1282 // 01234567 8 90123456 7890123456789012 3 456789012345678901234567890123456
1283 // -----------------------------------------------------------------------------
1284 // 00011010 1 01110101 0000000010001110 1 000000000000000000000000000000000
1285 // bbbbbbbb w ffffffff cccccccccccccccc w xxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxx
1286 // |26 bit| |-117--| |-----142------|
1287 // b = format bit len, o = odd parity of last 3 bits
1288 // f = facility code, c = card number
1289 // w = wiegand parity
1290 // (26 bit format shown)
1291
1292 uint32_t fc = 0;
1293 uint32_t cardnum = 0;
1294 uint32_t code1 = 0;
1295 uint32_t code2 = 0;
1296 uint8_t fmtLen = bytebits_to_byte(BitStream,8);
1297 if (fmtLen==26){
1298 fc = bytebits_to_byte(BitStream+9, 8);
1299 cardnum = bytebits_to_byte(BitStream+17, 16);
1300 code1 = bytebits_to_byte(BitStream+8,fmtLen);
1301 PrintAndLog("AWID Found - BitLength: %d, FC: %d, Card: %d - Wiegand: %x, Raw: %08x%08x%08x", fmtLen, fc, cardnum, code1, rawHi2, rawHi, rawLo);
1302 } else {
1303 cardnum = bytebits_to_byte(BitStream+8+(fmtLen-17), 16);
1304 if (fmtLen>32){
1305 code1 = bytebits_to_byte(BitStream+8,fmtLen-32);
1306 code2 = bytebits_to_byte(BitStream+8+(fmtLen-32),32);
1307 PrintAndLog("AWID Found - BitLength: %d -unknown BitLength- (%d) - Wiegand: %x%08x, Raw: %08x%08x%08x", fmtLen, cardnum, code1, code2, rawHi2, rawHi, rawLo);
1308 } else{
1309 code1 = bytebits_to_byte(BitStream+8,fmtLen);
1310 PrintAndLog("AWID Found - BitLength: %d -unknown BitLength- (%d) - Wiegand: %x, Raw: %08x%08x%08x", fmtLen, cardnum, code1, rawHi2, rawHi, rawLo);
1311 }
1312 }
1313 if (g_debugMode){
1314 PrintAndLog("DEBUG: idx: %d, Len: %d Printing Demod Buffer:", idx, 96);
1315 printDemodBuff();
1316 }
1317 //todo - convert hi2, hi, lo to demodbuffer for future sim/clone commands
1318 return 1;
1e090a61 1319}
1320
1321//by marshmellow
1322//Pyramid Prox demod - FSK RF/50 with preamble of 0000000000000001 (always a 128 bit data stream)
1323//print full Farpointe Data/Pyramid Prox ID and some bit format details if found
1324int CmdFSKdemodPyramid(const char *Cmd)
1325{
e0165dcf 1326 //raw fsk demod no manchester decoding no start bit finding just get binary from wave
1327 uint8_t BitStream[MAX_GRAPH_TRACE_LEN]={0};
1328 size_t size = getFromGraphBuf(BitStream);
1329 if (size==0) return 0;
1330
1331 //get binary from fsk wave
1332 int idx = PyramiddemodFSK(BitStream, &size);
1333 if (idx < 0){
1334 if (g_debugMode==1){
1335 if (idx == -5)
1336 PrintAndLog("DEBUG: Error - not enough samples");
1337 else if (idx == -1)
1338 PrintAndLog("DEBUG: Error - only noise found");
1339 else if (idx == -2)
1340 PrintAndLog("DEBUG: Error - problem during FSK demod");
1341 else if (idx == -3)
1342 PrintAndLog("DEBUG: Error - Size not correct: %d", size);
1343 else if (idx == -4)
1344 PrintAndLog("DEBUG: Error - Pyramid preamble not found");
1345 else
1346 PrintAndLog("DEBUG: Error - idx: %d",idx);
1347 }
1348 return 0;
1349 }
1350 // Index map
1351 // 0 10 20 30 40 50 60
1352 // | | | | | | |
1353 // 0123456 7 8901234 5 6789012 3 4567890 1 2345678 9 0123456 7 8901234 5 6789012 3
1354 // -----------------------------------------------------------------------------
1355 // 0000000 0 0000000 1 0000000 1 0000000 1 0000000 1 0000000 1 0000000 1 0000000 1
1356 // premable xxxxxxx o xxxxxxx o xxxxxxx o xxxxxxx o xxxxxxx o xxxxxxx o xxxxxxx o
1357
1358 // 64 70 80 90 100 110 120
1359 // | | | | | | |
1360 // 4567890 1 2345678 9 0123456 7 8901234 5 6789012 3 4567890 1 2345678 9 0123456 7
1361 // -----------------------------------------------------------------------------
1362 // 0000000 1 0000000 1 0000000 1 0110111 0 0011000 1 0000001 0 0001100 1 1001010 0
1363 // xxxxxxx o xxxxxxx o xxxxxxx o xswffff o ffffccc o ccccccc o ccccccw o ppppppp o
1364 // |---115---||---------71---------|
1365 // s = format start bit, o = odd parity of last 7 bits
1366 // f = facility code, c = card number
1367 // w = wiegand parity, x = extra space for other formats
1368 // p = unknown checksum
1369 // (26 bit format shown)
1370
1371 //get bytes for checksum calc
1372 uint8_t checksum = bytebits_to_byte(BitStream + idx + 120, 8);
1373 uint8_t csBuff[14] = {0x00};
1374 for (uint8_t i = 0; i < 13; i++){
1375 csBuff[i] = bytebits_to_byte(BitStream + idx + 16 + (i*8), 8);
1376 }
1377 //check checksum calc
1378 //checksum calc thanks to ICEMAN!!
1379 uint32_t checkCS = CRC8Maxim(csBuff,13);
1380
1381 //get raw ID before removing parities
1382 uint32_t rawLo = bytebits_to_byte(BitStream+idx+96,32);
1383 uint32_t rawHi = bytebits_to_byte(BitStream+idx+64,32);
1384 uint32_t rawHi2 = bytebits_to_byte(BitStream+idx+32,32);
1385 uint32_t rawHi3 = bytebits_to_byte(BitStream+idx,32);
1386 setDemodBuf(BitStream,128,idx);
1387
1388 size = removeParity(BitStream, idx+8, 8, 1, 120);
1389 if (size != 105){
1390 if (g_debugMode==1)
1391 PrintAndLog("DEBUG: Error at parity check - tag size does not match Pyramid format, SIZE: %d, IDX: %d, hi3: %x",size, idx, rawHi3);
1392 return 0;
1393 }
1394
1395 // ok valid card found!
1396
1397 // Index map
1398 // 0 10 20 30 40 50 60 70
1399 // | | | | | | | |
1400 // 01234567890123456789012345678901234567890123456789012345678901234567890
1401 // -----------------------------------------------------------------------
1402 // 00000000000000000000000000000000000000000000000000000000000000000000000
1403 // xxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxx
1404
1405 // 71 80 90 100
1406 // | | | |
1407 // 1 2 34567890 1234567890123456 7 8901234
1408 // ---------------------------------------
1409 // 1 1 01110011 0000000001000110 0 1001010
1410 // s w ffffffff cccccccccccccccc w ppppppp
1411 // |--115-| |------71------|
1412 // s = format start bit, o = odd parity of last 7 bits
1413 // f = facility code, c = card number
1414 // w = wiegand parity, x = extra space for other formats
1415 // p = unknown checksum
1416 // (26 bit format shown)
1417
1418 //find start bit to get fmtLen
1419 int j;
1420 for (j=0; j<size; j++){
1421 if(BitStream[j]) break;
1422 }
1423 uint8_t fmtLen = size-j-8;
1424 uint32_t fc = 0;
1425 uint32_t cardnum = 0;
1426 uint32_t code1 = 0;
1427 //uint32_t code2 = 0;
1428 if (fmtLen==26){
1429 fc = bytebits_to_byte(BitStream+73, 8);
1430 cardnum = bytebits_to_byte(BitStream+81, 16);
1431 code1 = bytebits_to_byte(BitStream+72,fmtLen);
1432 PrintAndLog("Pyramid ID Found - BitLength: %d, FC: %d, Card: %d - Wiegand: %x, Raw: %08x%08x%08x%08x", fmtLen, fc, cardnum, code1, rawHi3, rawHi2, rawHi, rawLo);
1433 } else if (fmtLen==45){
1434 fmtLen=42; //end = 10 bits not 7 like 26 bit fmt
1435 fc = bytebits_to_byte(BitStream+53, 10);
1436 cardnum = bytebits_to_byte(BitStream+63, 32);
1437 PrintAndLog("Pyramid ID Found - BitLength: %d, FC: %d, Card: %d - Raw: %08x%08x%08x%08x", fmtLen, fc, cardnum, rawHi3, rawHi2, rawHi, rawLo);
1438 } else {
1439 cardnum = bytebits_to_byte(BitStream+81, 16);
1440 if (fmtLen>32){
1441 //code1 = bytebits_to_byte(BitStream+(size-fmtLen),fmtLen-32);
1442 //code2 = bytebits_to_byte(BitStream+(size-32),32);
1443 PrintAndLog("Pyramid ID Found - BitLength: %d -unknown BitLength- (%d), Raw: %08x%08x%08x%08x", fmtLen, cardnum, rawHi3, rawHi2, rawHi, rawLo);
1444 } else{
1445 //code1 = bytebits_to_byte(BitStream+(size-fmtLen),fmtLen);
1446 PrintAndLog("Pyramid ID Found - BitLength: %d -unknown BitLength- (%d), Raw: %08x%08x%08x%08x", fmtLen, cardnum, rawHi3, rawHi2, rawHi, rawLo);
1447 }
1448 }
1449 if (checksum == checkCS)
1450 PrintAndLog("Checksum %02x passed", checksum);
1451 else
1452 PrintAndLog("Checksum %02x failed - should have been %02x", checksum, checkCS);
1453
1454 if (g_debugMode){
1455 PrintAndLog("DEBUG: idx: %d, Len: %d, Printing Demod Buffer:", idx, 128);
1456 printDemodBuff();
1457 }
1458 return 1;
1e090a61 1459}
1460
ad6219fc 1461// FDX-B ISO11784/85 demod (aka animal tag) BIPHASE, inverted, rf/32, with preamble of 00000000001 (128bits)
7f96433c 1462// 8 databits + 1 parity (1)
0df669a2 1463// CIITT 16 chksum
1464// NATIONAL CODE, ICAR database
ad6219fc 1465// COUNTRY CODE (ISO3166) or http://cms.abvma.ca/uploads/ManufacturersISOsandCountryCodes.pdf
0df669a2 1466// FLAG (animal/non-animal)
22a6a62f 1467/*
146838 IDbits
146910 country code
14701 extra app bit
147114 reserved bits
14721 animal bit
147316 ccitt CRC chksum over 64bit ID CODE.
147424 appli bits.
1475
ad6219fc 1476-- sample: 985121004515220 [ 37FF65B88EF94 ]
22a6a62f 1477*/
ad6219fc 1478int CmdFDXBdemodBI(const char *Cmd){
7f96433c 1479
1480 int invert = 1;
1481 int clk = 32;
1482 int errCnt = 0;
ad6219fc 1483 int maxErr = 0;
7f96433c 1484 uint8_t BitStream[MAX_DEMOD_BUF_LEN];
1485 size_t size = getFromGraphBuf(BitStream);
1486
ad6219fc 1487 errCnt = askdemod(BitStream, &size, &clk, &invert, maxErr, 0, 0);
1488 if ( errCnt < 0 || errCnt > maxErr ) {
a71ece51 1489 if (g_debugMode) PrintAndLog("DEBUG: no data or error found %d, clock: %d", errCnt, clk);
0df669a2 1490 return 0;
1491 }
615f21dd 1492
ad6219fc 1493 errCnt = BiphaseRawDecode(BitStream, &size, maxErr, 1);
1494 if (errCnt < 0 || errCnt > maxErr ) {
7f96433c 1495 if (g_debugMode) PrintAndLog("Error BiphaseRawDecode: %d", errCnt);
0df669a2 1496 return 0;
7f96433c 1497 }
0df669a2 1498
ad6219fc 1499 int preambleIndex = FDXBdemodBI(BitStream, &size);
7f96433c 1500 if (preambleIndex < 0){
ad6219fc 1501 if (g_debugMode) PrintAndLog("Error FDXBDemod , no startmarker found :: %d",preambleIndex);
7f96433c 1502 return 0;
1503 }
0df669a2 1504
ad6219fc 1505 setDemodBuf(BitStream, 128, preambleIndex);
7f96433c 1506
a71ece51 1507 // remove but don't verify parity. (pType = 2)
1508 size = removeParity(BitStream, preambleIndex + 11, 9, 2, 117);
ad6219fc 1509 if ( size <= 103 ) {
1510 if (g_debugMode) PrintAndLog("Error removeParity:: %d", size);
1511 return 0;
0df669a2 1512 }
ad6219fc 1513 if (g_debugMode) {
1514 char *bin = sprint_bin_break(BitStream,size,16);
1515 PrintAndLog("DEBUG BinStream:\n%s",bin);
1516 }
1517 PrintAndLog("\nFDX-B / ISO 11784/5 Animal Tag ID Found:");
a71ece51 1518 if (g_debugMode) PrintAndLog("Start marker %d; Size %d", preambleIndex, size);
ad6219fc 1519
a71ece51 1520 //got a good demod
ad6219fc 1521 uint64_t NationalCode = ((uint64_t)(bytebits_to_byteLSBF(BitStream+32,6)) << 32) | bytebits_to_byteLSBF(BitStream,32);
1522 uint32_t countryCode = bytebits_to_byteLSBF(BitStream+38,10);
1523 uint8_t dataBlockBit = BitStream[48];
1524 uint32_t reservedCode = bytebits_to_byteLSBF(BitStream+49,14);
1525 uint8_t animalBit = BitStream[63];
a71ece51 1526 uint32_t crc16 = bytebits_to_byteLSBF(BitStream+64,16);
ad6219fc 1527 uint32_t extended = bytebits_to_byteLSBF(BitStream+80,24);
1528
a71ece51 1529 uint64_t rawid = ((uint64_t)bytebits_to_byte(BitStream,32)<<32) | bytebits_to_byte(BitStream+32,32);
ad6219fc 1530 uint8_t raw[8];
1531 num_to_bytes(rawid, 8, raw);
a71ece51 1532
1533 if (g_debugMode) PrintAndLog("Raw ID Hex: %s", sprint_hex(raw,8));
1534
1535 uint16_t calcCrc = crc16_ccitt_kermit(raw, 8);
1536 PrintAndLog("Animal ID: %04u-%012llu", countryCode, NationalCode);
ad6219fc 1537 PrintAndLog("National Code: %012llu", NationalCode);
a71ece51 1538 PrintAndLog("CountryCode: %04u", countryCode);
ad6219fc 1539 PrintAndLog("Extended Data: %s", dataBlockBit ? "True" : "False");
1540 PrintAndLog("reserved Code: %u", reservedCode);
1541 PrintAndLog("Animal Tag: %s", animalBit ? "True" : "False");
a71ece51 1542 PrintAndLog("CRC: 0x%04X - [%04X] - %s", crc16, calcCrc, (calcCrc == crc16) ? "Passed" : "Failed");
1543 PrintAndLog("Extended: 0x%X\n", extended);
ad6219fc 1544
615f21dd 1545 return 1;
1546}
1547
1548
e770c648 1549//by marshmellow
1550//attempt to psk1 demod graph buffer
4ac906d1 1551int PSKDemod(const char *Cmd, bool verbose)
e770c648 1552{
e0165dcf 1553 int invert=0;
1554 int clk=0;
1555 int maxErr=100;
1556 sscanf(Cmd, "%i %i %i", &clk, &invert, &maxErr);
1557 if (clk==1){
1558 invert=1;
1559 clk=0;
1560 }
1561 if (invert != 0 && invert != 1) {
1562 if (verbose) PrintAndLog("Invalid argument: %s", Cmd);
1563 return 0;
1564 }
1565 uint8_t BitStream[MAX_GRAPH_TRACE_LEN]={0};
1566 size_t BitLen = getFromGraphBuf(BitStream);
1567 if (BitLen==0) return -1;
2eec55c8 1568 uint8_t carrier=countFC(BitStream, BitLen, 0);
e0165dcf 1569 if (carrier!=2 && carrier!=4 && carrier!=8){
1570 //invalid carrier
1571 return 0;
1572 }
1573 int errCnt=0;
1574 errCnt = pskRawDemod(BitStream, &BitLen, &clk, &invert);
1575 if (errCnt > maxErr){
2767fc02 1576 if (g_debugMode || verbose) PrintAndLog("Too many errors found, clk: %d, invert: %d, numbits: %d, errCnt: %d",clk,invert,BitLen,errCnt);
e0165dcf 1577 return 0;
1578 }
1579 if (errCnt<0|| BitLen<16){ //throw away static - allow 1 and -1 (in case of threshold command first)
2767fc02 1580 if (g_debugMode || verbose) PrintAndLog("no data found, clk: %d, invert: %d, numbits: %d, errCnt: %d",clk,invert,BitLen,errCnt);
e0165dcf 1581 return 0;
1582 }
2767fc02 1583 if (verbose || g_debugMode){
1584 PrintAndLog("\nUsing Clock:%d, invert:%d, Bits Found:%d",clk,invert,BitLen);
e0165dcf 1585 if (errCnt>0){
2767fc02 1586 PrintAndLog("# Errors during Demoding (shown as 7 in bit stream): %d",errCnt);
e0165dcf 1587 }
1588 }
1589 //prime demod buffer for output
1590 setDemodBuf(BitStream,BitLen,0);
1591 return 1;
4118b74d 1592}
e770c648 1593
4118b74d 1594// Indala 26 bit decode
1595// by marshmellow
1596// optional arguments - same as CmdpskNRZrawDemod (clock & invert)
1597int CmdIndalaDecode(const char *Cmd)
1598{
b4fb11ba 1599 int ans;
1600 if (strlen(Cmd)>0){
1601 ans = PSKDemod(Cmd, 0);
1602 } else{ //default to RF/32
1603 ans = PSKDemod("32", 0);
1604 }
4118b74d 1605
7a8a982b 1606 if (!ans){
ec75f5c1 1607 if (g_debugMode==1)
b4fb11ba 1608 PrintAndLog("Error1: %d",ans);
ba1a299c 1609 return 0;
1610 }
1611 uint8_t invert=0;
2b3af97d 1612 ans = indala26decode(DemodBuffer, &DemodBufferLen, &invert);
ba1a299c 1613 if (ans < 1) {
ec75f5c1 1614 if (g_debugMode==1)
b4fb11ba 1615 PrintAndLog("Error2: %d",ans);
ba1a299c 1616 return -1;
1617 }
a1d17964 1618 char showbits[251]={0x00};
84871873 1619 if (invert)
b4fb11ba 1620 if (g_debugMode==1)
e0165dcf 1621 PrintAndLog("Had to invert bits");
ec75f5c1 1622
ba1a299c 1623 //convert UID to HEX
1624 uint32_t uid1, uid2, uid3, uid4, uid5, uid6, uid7;
1625 int idx;
1626 uid1=0;
1627 uid2=0;
1628 PrintAndLog("BitLen: %d",DemodBufferLen);
1629 if (DemodBufferLen==64){
1630 for( idx=0; idx<64; idx++) {
1631 uid1=(uid1<<1)|(uid2>>31);
1632 if (DemodBuffer[idx] == 0) {
1633 uid2=(uid2<<1)|0;
1634 showbits[idx]='0';
1635 } else {
1636 uid2=(uid2<<1)|1;
1637 showbits[idx]='1';
1638 }
1639 }
1640 showbits[idx]='\0';
1641 PrintAndLog("Indala UID=%s (%x%08x)", showbits, uid1, uid2);
1642 }
1643 else {
1644 uid3=0;
1645 uid4=0;
1646 uid5=0;
1647 uid6=0;
1648 uid7=0;
1649 for( idx=0; idx<DemodBufferLen; idx++) {
1650 uid1=(uid1<<1)|(uid2>>31);
1651 uid2=(uid2<<1)|(uid3>>31);
1652 uid3=(uid3<<1)|(uid4>>31);
1653 uid4=(uid4<<1)|(uid5>>31);
1654 uid5=(uid5<<1)|(uid6>>31);
1655 uid6=(uid6<<1)|(uid7>>31);
1656 if (DemodBuffer[idx] == 0) {
1657 uid7=(uid7<<1)|0;
1658 showbits[idx]='0';
1659 }
1660 else {
1661 uid7=(uid7<<1)|1;
1662 showbits[idx]='1';
1663 }
1664 }
1665 showbits[idx]='\0';
1666 PrintAndLog("Indala UID=%s (%x%08x%08x%08x%08x%08x%08x)", showbits, uid1, uid2, uid3, uid4, uid5, uid6, uid7);
1667 }
b4fb11ba 1668 if (g_debugMode){
1669 PrintAndLog("DEBUG: printing demodbuffer:");
1670 printDemodBuff();
1671 }
ba1a299c 1672 return 1;
4118b74d 1673}
1674
411105e0 1675int CmdPSKNexWatch(const char *Cmd)
1676{
1677 if (!PSKDemod("", false)) return 0;
1678 uint8_t preamble[28] = {0,0,0,0,0,1,0,1,0,1,1,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0};
1679 size_t startIdx = 0, size = DemodBufferLen;
1680 bool invert = false;
1681 if (!preambleSearch(DemodBuffer, preamble, sizeof(preamble), &size, &startIdx)){
1682 // if didn't find preamble try again inverting
1683 if (!PSKDemod("1", false)) return 0;
1684 size = DemodBufferLen;
1685 if (!preambleSearch(DemodBuffer, preamble, sizeof(preamble), &size, &startIdx)) return 0;
1686 invert = true;
1687 }
1688 if (size != 128) return 0;
1689 setDemodBuf(DemodBuffer, size, startIdx+4);
1690 startIdx = 8+32; //4 = extra i added, 8 = preamble, 32 = reserved bits (always 0)
1691 //get ID
1692 uint32_t ID = 0;
1693 for (uint8_t wordIdx=0; wordIdx<4; wordIdx++){
1694 for (uint8_t idx=0; idx<8; idx++){
1695 ID = (ID << 1) | DemodBuffer[startIdx+wordIdx+(idx*4)];
1696 }
1697 }
1698 //parity check (TBD)
1699
1700 //checksum check (TBD)
1701
1702 //output
1703 PrintAndLog("NexWatch ID: %d", ID);
1704 if (invert){
1705 PrintAndLog("Had to Invert - probably NexKey");
1706 for (uint8_t idx=0; idx<size; idx++)
1707 DemodBuffer[idx] ^= 1;
1708 }
1709
1710 CmdPrintDemodBuff("x");
1711 return 1;
1712}
1713
04d2721b 1714// by marshmellow
e770c648 1715// takes 3 arguments - clock, invert, maxErr as integers
1716// attempts to demodulate nrz only
1717// prints binary found and saves in demodbuffer for further commands
b4a2fcf6 1718int NRZrawDemod(const char *Cmd, bool verbose)
e770c648 1719{
e0165dcf 1720 int invert=0;
1721 int clk=0;
1722 int maxErr=100;
1723 sscanf(Cmd, "%i %i %i", &clk, &invert, &maxErr);
1724 if (clk==1){
1725 invert=1;
1726 clk=0;
1727 }
1728 if (invert != 0 && invert != 1) {
1729 PrintAndLog("Invalid argument: %s", Cmd);
1730 return 0;
1731 }
1732 uint8_t BitStream[MAX_GRAPH_TRACE_LEN]={0};
1733 size_t BitLen = getFromGraphBuf(BitStream);
1734 if (BitLen==0) return 0;
1735 int errCnt=0;
1736 errCnt = nrzRawDemod(BitStream, &BitLen, &clk, &invert, maxErr);
1737 if (errCnt > maxErr){
1738 if (g_debugMode) PrintAndLog("Too many errors found, clk: %d, invert: %d, numbits: %d, errCnt: %d",clk,invert,BitLen,errCnt);
1739 return 0;
1740 }
2eec55c8 1741 if (errCnt<0 || BitLen<16){ //throw away static - allow 1 and -1 (in case of threshold command first)
e0165dcf 1742 if (g_debugMode) PrintAndLog("no data found, clk: %d, invert: %d, numbits: %d, errCnt: %d",clk,invert,BitLen,errCnt);
1743 return 0;
1744 }
1745 if (verbose || g_debugMode) PrintAndLog("Tried NRZ Demod using Clock: %d - invert: %d - Bits Found: %d",clk,invert,BitLen);
1746 //prime demod buffer for output
1747 setDemodBuf(BitStream,BitLen,0);
1748
2767fc02 1749 if (errCnt>0 && (verbose || g_debugMode)) PrintAndLog("# Errors during Demoding (shown as 7 in bit stream): %d",errCnt);
e0165dcf 1750 if (verbose || g_debugMode) {
1751 PrintAndLog("NRZ demoded bitstream:");
1752 // Now output the bitstream to the scrollback by line of 16 bits
1753 printDemodBuff();
1754 }
1755 return 1;
b4a2fcf6 1756}
1757
1758int CmdNRZrawDemod(const char *Cmd)
1759{
e0165dcf 1760 char cmdp = param_getchar(Cmd, 0);
1761 if (strlen(Cmd) > 10 || cmdp == 'h' || cmdp == 'H') {
1762 PrintAndLog("Usage: data rawdemod nr [clock] <0|1> [maxError]");
1763 PrintAndLog(" [set clock as integer] optional, if not set, autodetect.");
1764 PrintAndLog(" <invert>, 1 for invert output");
1765 PrintAndLog(" [set maximum allowed errors], default = 100.");
1766 PrintAndLog("");
1767 PrintAndLog(" sample: data rawdemod nr = demod a nrz/direct tag from GraphBuffer");
1768 PrintAndLog(" : data rawdemod nr 32 = demod a nrz/direct tag from GraphBuffer using a clock of RF/32");
1769 PrintAndLog(" : data rawdemod nr 32 1 = demod a nrz/direct tag from GraphBuffer using a clock of RF/32 and inverting data");
1770 PrintAndLog(" : data rawdemod nr 1 = demod a nrz/direct tag from GraphBuffer while inverting data");
1771 PrintAndLog(" : data rawdemod nr 64 1 0 = demod a nrz/direct tag from GraphBuffer using a clock of RF/64, inverting data and allowing 0 demod errors");
1772 return 0;
1773 }
1774 return NRZrawDemod(Cmd, TRUE);
e770c648 1775}
1776
1777// by marshmellow
1778// takes 3 arguments - clock, invert, maxErr as integers
04d2721b 1779// attempts to demodulate psk only
1780// prints binary found and saves in demodbuffer for further commands
e770c648 1781int CmdPSK1rawDemod(const char *Cmd)
4118b74d 1782{
e0165dcf 1783 int ans;
1784 char cmdp = param_getchar(Cmd, 0);
1785 if (strlen(Cmd) > 10 || cmdp == 'h' || cmdp == 'H') {
1786 PrintAndLog("Usage: data rawdemod p1 [clock] <0|1> [maxError]");
1787 PrintAndLog(" [set clock as integer] optional, if not set, autodetect.");
1788 PrintAndLog(" <invert>, 1 for invert output");
1789 PrintAndLog(" [set maximum allowed errors], default = 100.");
1790 PrintAndLog("");
1791 PrintAndLog(" sample: data rawdemod p1 = demod a psk1 tag from GraphBuffer");
1792 PrintAndLog(" : data rawdemod p1 32 = demod a psk1 tag from GraphBuffer using a clock of RF/32");
1793 PrintAndLog(" : data rawdemod p1 32 1 = demod a psk1 tag from GraphBuffer using a clock of RF/32 and inverting data");
1794 PrintAndLog(" : data rawdemod p1 1 = demod a psk1 tag from GraphBuffer while inverting data");
1795 PrintAndLog(" : data rawdemod p1 64 1 0 = demod a psk1 tag from GraphBuffer using a clock of RF/64, inverting data and allowing 0 demod errors");
1796 return 0;
1797 }
1798 ans = PSKDemod(Cmd, TRUE);
1799 //output
1800 if (!ans){
1801 if (g_debugMode) PrintAndLog("Error demoding: %d",ans);
1802 return 0;
1803 }
7a8a982b 1804
2767fc02 1805 PrintAndLog("PSK1 demoded bitstream:");
e0165dcf 1806 // Now output the bitstream to the scrollback by line of 16 bits
1807 printDemodBuff();
1808 return 1;
4118b74d 1809}
1810
04d2721b 1811// by marshmellow
19ff0210 1812// takes same args as cmdpsk1rawdemod
04d2721b 1813int CmdPSK2rawDemod(const char *Cmd)
1814{
e0165dcf 1815 int ans=0;
1816 char cmdp = param_getchar(Cmd, 0);
1817 if (strlen(Cmd) > 10 || cmdp == 'h' || cmdp == 'H') {
1818 PrintAndLog("Usage: data rawdemod p2 [clock] <0|1> [maxError]");
1819 PrintAndLog(" [set clock as integer] optional, if not set, autodetect.");
1820 PrintAndLog(" <invert>, 1 for invert output");
1821 PrintAndLog(" [set maximum allowed errors], default = 100.");
1822 PrintAndLog("");
1823 PrintAndLog(" sample: data rawdemod p2 = demod a psk2 tag from GraphBuffer, autodetect clock");
1824 PrintAndLog(" : data rawdemod p2 32 = demod a psk2 tag from GraphBuffer using a clock of RF/32");
1825 PrintAndLog(" : data rawdemod p2 32 1 = demod a psk2 tag from GraphBuffer using a clock of RF/32 and inverting output");
1826 PrintAndLog(" : data rawdemod p2 1 = demod a psk2 tag from GraphBuffer, autodetect clock and invert output");
1827 PrintAndLog(" : data rawdemod p2 64 1 0 = demod a psk2 tag from GraphBuffer using a clock of RF/64, inverting output and allowing 0 demod errors");
1828 return 0;
1829 }
1830 ans=PSKDemod(Cmd, TRUE);
1831 if (!ans){
1832 if (g_debugMode) PrintAndLog("Error demoding: %d",ans);
1833 return 0;
1834 }
1835 psk1TOpsk2(DemodBuffer, DemodBufferLen);
1836 PrintAndLog("PSK2 demoded bitstream:");
1837 // Now output the bitstream to the scrollback by line of 16 bits
1838 printDemodBuff();
1839 return 1;
04d2721b 1840}
1841
19ff0210 1842// by marshmellow - combines all raw demod functions into one menu command
1843int CmdRawDemod(const char *Cmd)
1844{
1845 char cmdp = Cmd[0]; //param_getchar(Cmd, 0);
1846
23f0a7d8 1847 if (strlen(Cmd) > 20 || cmdp == 'h' || cmdp == 'H' || strlen(Cmd)<2) {
19ff0210 1848 PrintAndLog("Usage: data rawdemod [modulation] <help>|<options>");
b41534d1 1849 PrintAndLog(" [modulation] as 2 char, 'ab' for ask/biphase, 'am' for ask/manchester, 'ar' for ask/raw, 'fs' for fsk, ...");
1850 PrintAndLog(" 'nr' for nrz/direct, 'p1' for psk1, 'p2' for psk2");
19ff0210 1851 PrintAndLog(" <help> as 'h', prints the help for the specific modulation");
1852 PrintAndLog(" <options> see specific modulation help for optional parameters");
1853 PrintAndLog("");
1fbf8956 1854 PrintAndLog(" sample: data rawdemod fs h = print help specific to fsk demod");
19ff0210 1855 PrintAndLog(" : data rawdemod fs = demod GraphBuffer using: fsk - autodetect");
b41534d1 1856 PrintAndLog(" : data rawdemod ab = demod GraphBuffer using: ask/biphase - autodetect");
19ff0210 1857 PrintAndLog(" : data rawdemod am = demod GraphBuffer using: ask/manchester - autodetect");
1858 PrintAndLog(" : data rawdemod ar = demod GraphBuffer using: ask/raw - autodetect");
1859 PrintAndLog(" : data rawdemod nr = demod GraphBuffer using: nrz/direct - autodetect");
1860 PrintAndLog(" : data rawdemod p1 = demod GraphBuffer using: psk1 - autodetect");
1861 PrintAndLog(" : data rawdemod p2 = demod GraphBuffer using: psk2 - autodetect");
1862 return 0;
1863 }
1864 char cmdp2 = Cmd[1];
1865 int ans = 0;
1866 if (cmdp == 'f' && cmdp2 == 's'){
f8f894a5 1867 ans = CmdFSKrawdemod(Cmd+2);
b41534d1 1868 } else if(cmdp == 'a' && cmdp2 == 'b'){
f8f894a5 1869 ans = Cmdaskbiphdemod(Cmd+2);
19ff0210 1870 } else if(cmdp == 'a' && cmdp2 == 'm'){
f8f894a5 1871 ans = Cmdaskmandemod(Cmd+2);
19ff0210 1872 } else if(cmdp == 'a' && cmdp2 == 'r'){
f8f894a5 1873 ans = Cmdaskrawdemod(Cmd+2);
19ff0210 1874 } else if(cmdp == 'n' && cmdp2 == 'r'){
f8f894a5 1875 ans = CmdNRZrawDemod(Cmd+2);
19ff0210 1876 } else if(cmdp == 'p' && cmdp2 == '1'){
f8f894a5 1877 ans = CmdPSK1rawDemod(Cmd+2);
19ff0210 1878 } else if(cmdp == 'p' && cmdp2 == '2'){
f8f894a5 1879 ans = CmdPSK2rawDemod(Cmd+2);
19ff0210 1880 } else {
1881 PrintAndLog("unknown modulation entered - see help ('h') for parameter structure");
1882 }
1883 return ans;
1884}
1885
7fe9b0b7 1886int CmdGrid(const char *Cmd)
1887{
e0165dcf 1888 sscanf(Cmd, "%i %i", &PlotGridX, &PlotGridY);
1889 PlotGridXdefault= PlotGridX;
1890 PlotGridYdefault= PlotGridY;
1891 RepaintGraphWindow();
1892 return 0;
7fe9b0b7 1893}
1894
1895int CmdHexsamples(const char *Cmd)
1896{
e0165dcf 1897 int i, j;
1898 int requested = 0;
1899 int offset = 0;
1900 char string_buf[25];
1901 char* string_ptr = string_buf;
1902 uint8_t got[BIGBUF_SIZE];
1903
1904 sscanf(Cmd, "%i %i", &requested, &offset);
1905
1906 /* if no args send something */
1907 if (requested == 0) {
1908 requested = 8;
1909 }
1910 if (offset + requested > sizeof(got)) {
1911 PrintAndLog("Tried to read past end of buffer, <bytes> + <offset> > %d", BIGBUF_SIZE);
1912 return 0;
1913 }
1914
1915 GetFromBigBuf(got,requested,offset);
1916 WaitForResponse(CMD_ACK,NULL);
1917
1918 i = 0;
1919 for (j = 0; j < requested; j++) {
1920 i++;
1921 string_ptr += sprintf(string_ptr, "%02x ", got[j]);
1922 if (i == 8) {
1923 *(string_ptr - 1) = '\0'; // remove the trailing space
1924 PrintAndLog("%s", string_buf);
1925 string_buf[0] = '\0';
1926 string_ptr = string_buf;
1927 i = 0;
1928 }
1929 if (j == requested - 1 && string_buf[0] != '\0') { // print any remaining bytes
1930 *(string_ptr - 1) = '\0';
1931 PrintAndLog("%s", string_buf);
1932 string_buf[0] = '\0';
1933 }
1934 }
1935 return 0;
7fe9b0b7 1936}
1937
7fe9b0b7 1938int CmdHide(const char *Cmd)
1939{
e0165dcf 1940 HideGraphWindow();
1941 return 0;
7fe9b0b7 1942}
1943
78f5b1a7 1944//zero mean GraphBuffer
7fe9b0b7 1945int CmdHpf(const char *Cmd)
1946{
e0165dcf 1947 int i;
1948 int accum = 0;
7fe9b0b7 1949
e0165dcf 1950 for (i = 10; i < GraphTraceLen; ++i)
1951 accum += GraphBuffer[i];
1952 accum /= (GraphTraceLen - 10);
1953 for (i = 0; i < GraphTraceLen; ++i)
1954 GraphBuffer[i] -= accum;
7fe9b0b7 1955
e0165dcf 1956 RepaintGraphWindow();
1957 return 0;
7fe9b0b7 1958}
f6d9fb17
MHS		 1959typedef struct {
1960 uint8_t * buffer;
1961 uint32_t numbits;
1962 uint32_t position;
ad6219fc 1963} BitstreamOut;
f6d9fb17
MHS		 1964
1965bool _headBit( BitstreamOut *stream)
1966{
1967 int bytepos = stream->position >> 3; // divide by 8
1968 int bitpos = (stream->position++) & 7; // mask out 00000111
1969 return (*(stream->buffer + bytepos) >> (7-bitpos)) & 1;
1970}
1971
1972uint8_t getByte(uint8_t bits_per_sample, BitstreamOut* b)
1973{
1974 int i;
1975 uint8_t val = 0;
1976 for(i =0 ; i < bits_per_sample; i++)
1977 {
1978 val |= (_headBit(b) << (7-i));
1979 }
1980 return val;
1981}
7fe9b0b7 1982
1fbf8956 1983int getSamples(const char *Cmd, bool silent)
7fe9b0b7 1984{
e0165dcf 1985 //If we get all but the last byte in bigbuf,
1986 // we don't have to worry about remaining trash
1987 // in the last byte in case the bits-per-sample
1988 // does not line up on byte boundaries
1989
1990 uint8_t got[BIGBUF_SIZE-1] = { 0 };
1991
1992 int n = strtol(Cmd, NULL, 0);
1993
1994 if (n == 0)
1995 n = sizeof(got);
1996
1997 if (n > sizeof(got))
1998 n = sizeof(got);
1999
2000 PrintAndLog("Reading %d bytes from device memory\n", n);
2001 GetFromBigBuf(got,n,0);
2002 PrintAndLog("Data fetched");
2003 UsbCommand response;
2004 WaitForResponse(CMD_ACK, &response);
2005 uint8_t bits_per_sample = 8;
2006
2007 //Old devices without this feature would send 0 at arg[0]
2008 if(response.arg[0] > 0)
2009 {
2010 sample_config *sc = (sample_config *) response.d.asBytes;
2011 PrintAndLog("Samples @ %d bits/smpl, decimation 1:%d ", sc->bits_per_sample
2012 , sc->decimation);
2013 bits_per_sample = sc->bits_per_sample;
2014 }
2015 if(bits_per_sample < 8)
2016 {
2017 PrintAndLog("Unpacking...");
2018 BitstreamOut bout = { got, bits_per_sample * n, 0};
2019 int j =0;
e6432f05 2020 for (j = 0; j * bits_per_sample < n * 8 && j < n; j++) {
e0165dcf 2021 uint8_t sample = getByte(bits_per_sample, &bout);
2022 GraphBuffer[j] = ((int) sample )- 128;
2023 }
2024 GraphTraceLen = j;
2025 PrintAndLog("Unpacked %d samples" , j );
2026 }else
2027 {
2028 for (int j = 0; j < n; j++) {
2029 GraphBuffer[j] = ((int)got[j]) - 128;
2030 }
2031 GraphTraceLen = n;
2032 }
2033
2034 RepaintGraphWindow();
2035 return 0;
1fbf8956 2036}
2037
2038int CmdSamples(const char *Cmd)
2039{
e0165dcf 2040 return getSamples(Cmd, false);
7fe9b0b7 2041}
2042
d6a120a2
MHS		 2043int CmdTuneSamples(const char *Cmd)
2044{
3aa4014b 2045 int timeout = 0;
2046 printf("\nMeasuring antenna characteristics, please wait...");
ba1a299c 2047
3aa4014b 2048 UsbCommand c = {CMD_MEASURE_ANTENNA_TUNING};
2049 SendCommand(&c);
2050
2051 UsbCommand resp;
2052 while(!WaitForResponseTimeout(CMD_MEASURED_ANTENNA_TUNING,&resp,1000)) {
2053 timeout++;
2054 printf(".");
2055 if (timeout > 7) {
2056 PrintAndLog("\nNo response from Proxmark. Aborting...");
2057 return 1;
2058 }
2059 }
2060
2061 int peakv, peakf;
2062 int vLf125, vLf134, vHf;
2063 vLf125 = resp.arg[0] & 0xffff;
2064 vLf134 = resp.arg[0] >> 16;
2065 vHf = resp.arg[1] & 0xffff;;
2066 peakf = resp.arg[2] & 0xffff;
2067 peakv = resp.arg[2] >> 16;
2068 PrintAndLog("");
2069 PrintAndLog("# LF antenna: %5.2f V @ 125.00 kHz", vLf125/1000.0);
2070 PrintAndLog("# LF antenna: %5.2f V @ 134.00 kHz", vLf134/1000.0);
2071 PrintAndLog("# LF optimal: %5.2f V @%9.2f kHz", peakv/1000.0, 12000.0/(peakf+1));
2072 PrintAndLog("# HF antenna: %5.2f V @ 13.56 MHz", vHf/1000.0);
0d0d0499 2073
2767fc02 2074 #define LF_UNUSABLE_V 2948 // was 2000. Changed due to bugfix in voltage measurements. LF results are now 47% higher.
2075 #define LF_MARGINAL_V 14739 // was 10000. Changed due to bugfix bug in voltage measurements. LF results are now 47% higher.
2076 #define HF_UNUSABLE_V 3167 // was 2000. Changed due to bugfix in voltage measurements. HF results are now 58% higher.
2077 #define HF_MARGINAL_V 7917 // was 5000. Changed due to bugfix in voltage measurements. HF results are now 58% higher.
0d0d0499 2078
2079 if (peakv < LF_UNUSABLE_V)
3aa4014b 2080 PrintAndLog("# Your LF antenna is unusable.");
0d0d0499 2081 else if (peakv < LF_MARGINAL_V)
3aa4014b 2082 PrintAndLog("# Your LF antenna is marginal.");
0d0d0499 2083 if (vHf < HF_UNUSABLE_V)
3aa4014b 2084 PrintAndLog("# Your HF antenna is unusable.");
0d0d0499 2085 else if (vHf < HF_MARGINAL_V)
3aa4014b 2086 PrintAndLog("# Your HF antenna is marginal.");
2087
0d0d0499 2088 if (peakv >= LF_UNUSABLE_V) {
2089 for (int i = 0; i < 256; i++) {
2090 GraphBuffer[i] = resp.d.asBytes[i] - 128;
2091 }
2092 PrintAndLog("Displaying LF tuning graph. Divisor 89 is 134khz, 95 is 125khz.\n");
2093 PrintAndLog("\n");
2094 GraphTraceLen = 256;
2095 ShowGraphWindow();
abd16c45 2096 RepaintGraphWindow();
ba1a299c 2097 }
2098
b4fb11ba 2099 return 0;
d6a120a2
MHS		 2100}
2101
3aa4014b 2102
7fe9b0b7 2103int CmdLoad(const char *Cmd)
2104{
e0165dcf 2105 char filename[FILE_PATH_SIZE] = {0x00};
2106 int len = 0;
b915fda3 2107
e0165dcf 2108 len = strlen(Cmd);
2109 if (len > FILE_PATH_SIZE) len = FILE_PATH_SIZE;
2110 memcpy(filename, Cmd, len);
b915fda3 2111
e0165dcf 2112 FILE *f = fopen(filename, "r");
2113 if (!f) {
2114 PrintAndLog("couldn't open '%s'", filename);
2115 return 0;
2116 }
2117
2118 GraphTraceLen = 0;
2119 char line[80];
2120 while (fgets(line, sizeof (line), f)) {
2121 GraphBuffer[GraphTraceLen] = atoi(line);
2122 GraphTraceLen++;
2123 }
2124 fclose(f);
2125 PrintAndLog("loaded %d samples", GraphTraceLen);
2126 RepaintGraphWindow();
2127 return 0;
7fe9b0b7 2128}
2129
2130int CmdLtrim(const char *Cmd)
2131{
e0165dcf 2132 int ds = atoi(Cmd);
cc15a118 2133 if (GraphTraceLen<=0) return 0;
e0165dcf 2134 for (int i = ds; i < GraphTraceLen; ++i)
2135 GraphBuffer[i-ds] = GraphBuffer[i];
2136 GraphTraceLen -= ds;
7fe9b0b7 2137
e0165dcf 2138 RepaintGraphWindow();
2139 return 0;
7fe9b0b7 2140}
ec75f5c1 2141
2142// trim graph to input argument length
9ec1416a 2143int CmdRtrim(const char *Cmd)
2144{
e0165dcf 2145 int ds = atoi(Cmd);
9ec1416a 2146
e0165dcf 2147 GraphTraceLen = ds;
9ec1416a 2148
e0165dcf 2149 RepaintGraphWindow();
2150 return 0;
9ec1416a 2151}
7fe9b0b7 2152
7fe9b0b7 2153int CmdNorm(const char *Cmd)
2154{
e0165dcf 2155 int i;
2156 int max = INT_MIN, min = INT_MAX;
7fe9b0b7 2157
e0165dcf 2158 for (i = 10; i < GraphTraceLen; ++i) {
2159 if (GraphBuffer[i] > max)
2160 max = GraphBuffer[i];
2161 if (GraphBuffer[i] < min)
2162 min = GraphBuffer[i];
2163 }
7fe9b0b7 2164
e0165dcf 2165 if (max != min) {
2166 for (i = 0; i < GraphTraceLen; ++i) {
ba1a299c 2167 GraphBuffer[i] = (GraphBuffer[i] - ((max + min) / 2)) * 256 /
e0165dcf 2168 (max - min);
ba1a299c 2169 //marshmelow: adjusted *1000 to *256 to make +/- 128 so demod commands still work
e0165dcf 2170 }
2171 }
2172 RepaintGraphWindow();
2173 return 0;
7fe9b0b7 2174}
2175
2176int CmdPlot(const char *Cmd)
2177{
e0165dcf 2178 ShowGraphWindow();
2179 return 0;
7fe9b0b7 2180}
2181
2182int CmdSave(const char *Cmd)
2183{
e0165dcf 2184 char filename[FILE_PATH_SIZE] = {0x00};
2185 int len = 0;
b915fda3 2186
e0165dcf 2187 len = strlen(Cmd);
2188 if (len > FILE_PATH_SIZE) len = FILE_PATH_SIZE;
2189 memcpy(filename, Cmd, len);
2190
b915fda3 2191
e0165dcf 2192 FILE *f = fopen(filename, "w");
2193 if(!f) {
2194 PrintAndLog("couldn't open '%s'", filename);
2195 return 0;
2196 }
2197 int i;
2198 for (i = 0; i < GraphTraceLen; i++) {
2199 fprintf(f, "%d\n", GraphBuffer[i]);
2200 }
2201 fclose(f);
2202 PrintAndLog("saved to '%s'", Cmd);
2203 return 0;
7fe9b0b7 2204}
2205
2206int CmdScale(const char *Cmd)
2207{
e0165dcf 2208 CursorScaleFactor = atoi(Cmd);
2209 if (CursorScaleFactor == 0) {
2210 PrintAndLog("bad, can't have zero scale");
2211 CursorScaleFactor = 1;
2212 }
2213 RepaintGraphWindow();
2214 return 0;
7fe9b0b7 2215}
2216
d51b2eda
MHS		 2217int CmdDirectionalThreshold(const char *Cmd)
2218{
e0165dcf 2219 int8_t upThres = param_get8(Cmd, 0);
2220 int8_t downThres = param_get8(Cmd, 1);
2221
2222 printf("Applying Up Threshold: %d, Down Threshold: %d\n", upThres, downThres);
2223
2224 int lastValue = GraphBuffer[0];
2225 GraphBuffer[0] = 0; // Will be changed at the end, but init 0 as we adjust to last samples value if no threshold kicks in.
2226
2227 for (int i = 1; i < GraphTraceLen; ++i) {
2228 // Apply first threshold to samples heading up
2229 if (GraphBuffer[i] >= upThres && GraphBuffer[i] > lastValue)
2230 {
2231 lastValue = GraphBuffer[i]; // Buffer last value as we overwrite it.
2232 GraphBuffer[i] = 1;
2233 }
2234 // Apply second threshold to samples heading down
2235 else if (GraphBuffer[i] <= downThres && GraphBuffer[i] < lastValue)
2236 {
2237 lastValue = GraphBuffer[i]; // Buffer last value as we overwrite it.
2238 GraphBuffer[i] = -1;
2239 }
2240 else
2241 {
2242 lastValue = GraphBuffer[i]; // Buffer last value as we overwrite it.
2243 GraphBuffer[i] = GraphBuffer[i-1];
2244
2245 }
2246 }
2247 GraphBuffer[0] = GraphBuffer[1]; // Aline with first edited sample.
2248 RepaintGraphWindow();
2249 return 0;
d51b2eda
MHS		 2250}
2251
7fe9b0b7 2252int CmdZerocrossings(const char *Cmd)
2253{
e0165dcf 2254 // Zero-crossings aren't meaningful unless the signal is zero-mean.
2255 CmdHpf("");
2256
2257 int sign = 1;
2258 int zc = 0;
2259 int lastZc = 0;
2260
2261 for (int i = 0; i < GraphTraceLen; ++i) {
2262 if (GraphBuffer[i] * sign >= 0) {
2263 // No change in sign, reproduce the previous sample count.
2264 zc++;
2265 GraphBuffer[i] = lastZc;
2266 } else {
2267 // Change in sign, reset the sample count.
2268 sign = -sign;
2269 GraphBuffer[i] = lastZc;
2270 if (sign > 0) {
2271 lastZc = zc;
2272 zc = 0;
2273 }
2274 }
2275 }
2276
2277 RepaintGraphWindow();
2278 return 0;
7fe9b0b7 2279}
2280
ba1a299c 2281static command_t CommandTable[] =
7fe9b0b7 2282{
e0165dcf 2283 {"help", CmdHelp, 1, "This help"},
49bbc60a 2284 {"askedgedetect", CmdAskEdgeDetect, 1, "[threshold] Adjust Graph for manual ask demod using the length of sample differences to detect the edge of a wave (use 20-45, def:25)"},
e0165dcf 2285 {"askem410xdemod", CmdAskEM410xDemod, 1, "[clock] [invert<0|1>] [maxErr] -- Demodulate an EM410x tag from GraphBuffer (args optional)"},
2286 {"askgproxiidemod", CmdG_Prox_II_Demod, 1, "Demodulate a G Prox II tag from GraphBuffer"},
2287 {"autocorr", CmdAutoCorr, 1, "[window length] [g] -- Autocorrelation over window - g to save back to GraphBuffer (overwrite)"},
fef74fdc 2288 {"biphaserawdecode",CmdBiphaseDecodeRaw,1, "[offset] [invert<0|1>] [maxErr] -- Biphase decode bin stream in DemodBuffer (offset = 0|1 bits to shift the decode start)"},
e0165dcf 2289 {"bitsamples", CmdBitsamples, 0, "Get raw samples as bitstring"},
e0165dcf 2290 {"buffclear", CmdBuffClear, 1, "Clear sample buffer and graph window"},
2291 {"dec", CmdDec, 1, "Decimate samples"},
2292 {"detectclock", CmdDetectClockRate, 1, "[modulation] Detect clock rate of wave in GraphBuffer (options: 'a','f','n','p' for ask, fsk, nrz, psk respectively)"},
ad6219fc 2293 {"fdxbdemod", CmdFDXBdemodBI , 1, "Demodulate a FDX-B ISO11784/85 Biphase tag from GraphBuffer"},
e0165dcf 2294 {"fskawiddemod", CmdFSKdemodAWID, 1, "Demodulate an AWID FSK tag from GraphBuffer"},
2295 //{"fskfcdetect", CmdFSKfcDetect, 1, "Try to detect the Field Clock of an FSK wave"},
2296 {"fskhiddemod", CmdFSKdemodHID, 1, "Demodulate a HID FSK tag from GraphBuffer"},
2297 {"fskiodemod", CmdFSKdemodIO, 1, "Demodulate an IO Prox FSK tag from GraphBuffer"},
2298 {"fskpyramiddemod", CmdFSKdemodPyramid, 1, "Demodulate a Pyramid FSK tag from GraphBuffer"},
2299 {"fskparadoxdemod", CmdFSKdemodParadox, 1, "Demodulate a Paradox FSK tag from GraphBuffer"},
2300 {"getbitstream", CmdGetBitStream, 1, "Convert GraphBuffer's >=1 values to 1 and <1 to 0"},
2301 {"grid", CmdGrid, 1, "<x> <y> -- overlay grid on graph window, use zero value to turn off either"},
2302 {"hexsamples", CmdHexsamples, 0, "<bytes> [<offset>] -- Dump big buffer as hex bytes"},
2303 {"hide", CmdHide, 1, "Hide graph window"},
2304 {"hpf", CmdHpf, 1, "Remove DC offset from trace"},
2305 {"load", CmdLoad, 1, "<filename> -- Load trace (to graph window"},
2306 {"ltrim", CmdLtrim, 1, "<samples> -- Trim samples from left of trace"},
2307 {"rtrim", CmdRtrim, 1, "<location to end trace> -- Trim samples from right of trace"},
fef74fdc 2308 {"manrawdecode", Cmdmandecoderaw, 1, "[invert] [maxErr] -- Manchester decode binary stream in DemodBuffer"},
e0165dcf 2309 {"norm", CmdNorm, 1, "Normalize max/min to +/-128"},
2310 {"plot", CmdPlot, 1, "Show graph window (hit 'h' in window for keystroke help)"},
2d2f7d19 2311 {"printdemodbuffer",CmdPrintDemodBuff, 1, "[x] [o] <offset> -- print the data in the DemodBuffer - 'x' for hex output"},
e0165dcf 2312 {"pskindalademod", CmdIndalaDecode, 1, "[clock] [invert<0|1>] -- Demodulate an indala tag (PSK1) from GraphBuffer (args optional)"},
411105e0 2313 {"psknexwatchdemod",CmdPSKNexWatch, 1, "Demodulate a NexWatch tag (nexkey, quadrakey) (PSK1) from GraphBuffer"},
e0165dcf 2314 {"rawdemod", CmdRawDemod, 1, "[modulation] ... <options> -see help (h option) -- Demodulate the data in the GraphBuffer and output binary"},
2315 {"samples", CmdSamples, 0, "[512 - 40000] -- Get raw samples for graph window (GraphBuffer)"},
2316 {"save", CmdSave, 1, "<filename> -- Save trace (from graph window)"},
2317 {"scale", CmdScale, 1, "<int> -- Set cursor display scale"},
2318 {"setdebugmode", CmdSetDebugMode, 1, "<0|1> -- Turn on or off Debugging Mode for demods"},
2319 {"shiftgraphzero", CmdGraphShiftZero, 1, "<shift> -- Shift 0 for Graphed wave + or - shift value"},
e0165dcf 2320 {"dirthreshold", CmdDirectionalThreshold, 1, "<thres up> <thres down> -- Max rising higher up-thres/ Min falling lower down-thres, keep rest as prev."},
2321 {"tune", CmdTuneSamples, 0, "Get hw tune samples for graph window"},
2322 {"undec", CmdUndec, 1, "Un-decimate samples by 2"},
2323 {"zerocrossings", CmdZerocrossings, 1, "Count time between zero-crossings"},
2324 {NULL, NULL, 0, NULL}
7fe9b0b7 2325};
2326
2327int CmdData(const char *Cmd)
2328{
e0165dcf 2329 CmdsParse(CommandTable, Cmd);
2330 return 0;
7fe9b0b7 2331}
2332
2333int CmdHelp(const char *Cmd)
2334{
e0165dcf 2335 CmdsHelp(CommandTable);
2336 return 0;
7fe9b0b7 2337}
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