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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
11 #include <stdio.h>
12 #include <stdlib.h>
13 #include <string.h>
14 #include <limits.h>
15 #include "proxmark3.h"
16 #include "data.h"
17 #include "ui.h"
18 #include "graph.h"
19 #include "cmdparser.h"
20 #include "util.h"
21 #include "cmdmain.h"
22 #include "cmddata.h"
23 #include "lfdemod.h"
24 #include "usb_cmd.h"
25 #include "crc.h"
26
27 uint8_t DemodBuffer[MAX_DEMOD_BUF_LEN];
28 uint8_t g_debugMode;
29 int DemodBufferLen;
30 static int CmdHelp(const char *Cmd);
31
32 //set the demod buffer with given array of binary (one bit per byte)
33 //by marshmellow
34 void setDemodBuf(uint8_t *buff, size_t size, size_t startIdx)
35 {
36 if (buff == NULL)
37 return;
38
39 if ( size >= MAX_DEMOD_BUF_LEN)
40 size = MAX_DEMOD_BUF_LEN;
41
42 size_t i = 0;
43 for (; i < size; i++){
44 DemodBuffer[i]=buff[startIdx++];
45 }
46 DemodBufferLen=size;
47 return;
48 }
49
50 int CmdSetDebugMode(const char *Cmd)
51 {
52 int demod=0;
53 sscanf(Cmd, "%i", &demod);
54 g_debugMode=(uint8_t)demod;
55 return 1;
56 }
57
58 //by marshmellow
59 void printDemodBuff(void)
60 {
61 int bitLen = DemodBufferLen;
62 if (bitLen<1) {
63 PrintAndLog("no bits found in demod buffer");
64 return;
65 }
66 if (bitLen>512) bitLen=512; //max output to 512 bits if we have more - should be plenty
67
68 char *bin = sprint_bin_break(DemodBuffer,bitLen,16);
69 PrintAndLog("%s",bin);
70
71 return;
72 }
73
74 int CmdPrintDemodBuff(const char *Cmd)
75 {
76 char hex;
77 char printBuff[512]={0x00};
78 uint8_t numBits = DemodBufferLen & 0xFFFC;
79 sscanf(Cmd, "%c", &hex);
80 if (hex == 'h'){
81 PrintAndLog("Usage: data printdemodbuffer [x]");
82 PrintAndLog("Options: ");
83 PrintAndLog(" h This help");
84 PrintAndLog(" x output in hex (omit for binary output)");
85 return 0;
86 }
87 if (hex == 'x'){
88 numBits = binarraytohex(printBuff, (char *)DemodBuffer, numBits);
89 if (numBits==0) return 0;
90 PrintAndLog("DemodBuffer: %s",printBuff);
91 } else {
92 printDemodBuff();
93 }
94 return 1;
95 }
96
97 //by marshmellow
98 //this function strictly converts >1 to 1 and <1 to 0 for each sample in the graphbuffer
99 int CmdGetBitStream(const char *Cmd)
100 {
101 int i;
102 CmdHpf(Cmd);
103 for (i = 0; i < GraphTraceLen; i++) {
104 if (GraphBuffer[i] >= 1) {
105 GraphBuffer[i] = 1;
106 } else {
107 GraphBuffer[i] = 0;
108 }
109 }
110 RepaintGraphWindow();
111 return 0;
112 }
113
114 //by marshmellow
115 //print 64 bit EM410x ID in multiple formats
116 void printEM410x(uint32_t hi, uint64_t id)
117 {
118 if (id || hi){
119 uint64_t iii=1;
120 uint64_t id2lo=0;
121 uint32_t ii=0;
122 uint32_t i=0;
123 for (ii=5; ii>0;ii--){
124 for (i=0;i<8;i++){
125 id2lo=(id2lo<<1LL) | ((id & (iii << (i+((ii-1)*8)))) >> (i+((ii-1)*8)));
126 }
127 }
128 if (hi){
129 //output 88 bit em id
130 PrintAndLog("\nEM TAG ID : %06X%016llX", hi, id);
131 } else{
132 //output 40 bit em id
133 PrintAndLog("\nEM TAG ID : %010llX", id);
134 PrintAndLog("Unique TAG ID : %010llX", id2lo);
135 PrintAndLog("\nPossible de-scramble patterns");
136 PrintAndLog("HoneyWell IdentKey {");
137 PrintAndLog("DEZ 8 : %08lld",id & 0xFFFFFF);
138 PrintAndLog("DEZ 10 : %010lld",id & 0xFFFFFFFF);
139 PrintAndLog("DEZ 5.5 : %05lld.%05lld",(id>>16LL) & 0xFFFF,(id & 0xFFFF));
140 PrintAndLog("DEZ 3.5A : %03lld.%05lld",(id>>32ll),(id & 0xFFFF));
141 PrintAndLog("DEZ 3.5B : %03lld.%05lld",(id & 0xFF000000) >> 24,(id & 0xFFFF));
142 PrintAndLog("DEZ 3.5C : %03lld.%05lld",(id & 0xFF0000) >> 16,(id & 0xFFFF));
143 PrintAndLog("DEZ 14/IK2 : %014lld",id);
144 PrintAndLog("DEZ 15/IK3 : %015lld",id2lo);
145 PrintAndLog("DEZ 20/ZK : %02lld%02lld%02lld%02lld%02lld%02lld%02lld%02lld%02lld%02lld",
146 (id2lo & 0xf000000000) >> 36,
147 (id2lo & 0x0f00000000) >> 32,
148 (id2lo & 0x00f0000000) >> 28,
149 (id2lo & 0x000f000000) >> 24,
150 (id2lo & 0x0000f00000) >> 20,
151 (id2lo & 0x00000f0000) >> 16,
152 (id2lo & 0x000000f000) >> 12,
153 (id2lo & 0x0000000f00) >> 8,
154 (id2lo & 0x00000000f0) >> 4,
155 (id2lo & 0x000000000f)
156 );
157 uint64_t paxton = (((id>>32) << 24) | (id & 0xffffff)) + 0x143e00;
158 PrintAndLog("}\nOther : %05lld_%03lld_%08lld",(id&0xFFFF),((id>>16LL) & 0xFF),(id & 0xFFFFFF));
159 PrintAndLog("Pattern Paxton : %lld [0x%llX]", paxton, paxton);
160
161 uint32_t p1id = (id & 0xFFFFFF);
162 uint8_t arr[32] = {0x00};
163 int i =0;
164 int j = 23;
165 for (; i < 24; ++i, --j ){
166 arr[i] = (p1id >> i) & 1;
167 }
168
169 uint32_t p1 = 0;
170
171 p1 |= arr[23] << 21;
172 p1 |= arr[22] << 23;
173 p1 |= arr[21] << 20;
174 p1 |= arr[20] << 22;
175
176 p1 |= arr[19] << 18;
177 p1 |= arr[18] << 16;
178 p1 |= arr[17] << 19;
179 p1 |= arr[16] << 17;
180
181 p1 |= arr[15] << 13;
182 p1 |= arr[14] << 15;
183 p1 |= arr[13] << 12;
184 p1 |= arr[12] << 14;
185
186 p1 |= arr[11] << 6;
187 p1 |= arr[10] << 2;
188 p1 |= arr[9] << 7;
189 p1 |= arr[8] << 1;
190
191 p1 |= arr[7] << 0;
192 p1 |= arr[6] << 8;
193 p1 |= arr[5] << 11;
194 p1 |= arr[4] << 3;
195
196 p1 |= arr[3] << 10;
197 p1 |= arr[2] << 4;
198 p1 |= arr[1] << 5;
199 p1 |= arr[0] << 9;
200 PrintAndLog("Pattern 1 : %d [0x%X]", p1, p1);
201
202 uint16_t sebury1 = id & 0xFFFF;
203 uint8_t sebury2 = (id >> 16) & 0x7F;
204 uint32_t sebury3 = id & 0x7FFFFF;
205 PrintAndLog("Pattern Sebury : %d %d %d [0x%X 0x%X 0x%X]", sebury1, sebury2, sebury3, sebury1, sebury2, sebury3);
206 }
207 }
208 return;
209 }
210
211
212 int AskEm410xDemod(const char *Cmd, uint32_t *hi, uint64_t *lo)
213 {
214 int ans = ASKmanDemod(Cmd, FALSE, FALSE);
215 if (!ans) return 0;
216
217 size_t idx=0;
218 if (Em410xDecode(DemodBuffer,(size_t *) &DemodBufferLen, &idx, hi, lo)){
219 if (g_debugMode){
220 PrintAndLog("DEBUG: idx: %d, Len: %d, Printing Demod Buffer:", idx, DemodBufferLen);
221 printDemodBuff();
222 }
223 return 1;
224 }
225 return 0;
226 }
227 //by marshmellow
228 //takes 3 arguments - clock, invert and maxErr as integers
229 //attempts to demodulate ask while decoding manchester
230 //prints binary found and saves in graphbuffer for further commands
231 int CmdAskEM410xDemod(const char *Cmd)
232 {
233 char cmdp = param_getchar(Cmd, 0);
234 if (strlen(Cmd) > 10 || cmdp == 'h' || cmdp == 'H') {
235 PrintAndLog("Usage: data askem410xdemod [clock] <0|1> [maxError]");
236 PrintAndLog(" [set clock as integer] optional, if not set, autodetect.");
237 PrintAndLog(" <invert>, 1 for invert output");
238 PrintAndLog(" [set maximum allowed errors], default = 100.");
239 PrintAndLog("");
240 PrintAndLog(" sample: data askem410xdemod = demod an EM410x Tag ID from GraphBuffer");
241 PrintAndLog(" : data askem410xdemod 32 = demod an EM410x Tag ID from GraphBuffer using a clock of RF/32");
242 PrintAndLog(" : data askem410xdemod 32 1 = demod an EM410x Tag ID from GraphBuffer using a clock of RF/32 and inverting data");
243 PrintAndLog(" : data askem410xdemod 1 = demod an EM410x Tag ID from GraphBuffer while inverting data");
244 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");
245 return 0;
246 }
247 uint32_t hi = 0;
248 uint64_t lo = 0;
249 if (AskEm410xDemod(Cmd, &hi, &lo)) {
250 PrintAndLog("EM410x pattern found: ");
251 printEM410x(hi, lo);
252 return 1;
253 }
254 return 0;
255 }
256
257 int ASKmanDemod(const char *Cmd, bool verbose, bool emSearch)
258 {
259 int invert=0;
260 int clk=0;
261 int maxErr=100;
262 int maxLen=512*64;
263 //param_getdec(Cmd, 0, &clk);
264 //param_getdec(Cmd, 1, &invert);
265 //maxErr = param_get32ex(Cmd, 2, 0xFFFFFFFF, 10);
266 //if (maxErr == 0xFFFFFFFF) maxErr=100;
267 uint8_t BitStream[MAX_GRAPH_TRACE_LEN]={0};
268 sscanf(Cmd, "%i %i %i %i", &clk, &invert, &maxErr, &maxLen);
269 if (invert != 0 && invert != 1) {
270 PrintAndLog("Invalid argument: %s", Cmd);
271 return 0;
272 }
273 if (clk==1){
274 invert=1;
275 clk=0;
276 }
277 size_t BitLen = getFromGraphBuf(BitStream);
278 if (g_debugMode) PrintAndLog("DEBUG: Bitlen from grphbuff: %d",BitLen);
279 if (!BitLen) return 0;
280 if (maxLen<BitLen && maxLen != 0) BitLen = maxLen;
281 int errCnt = askmandemod(BitStream, &BitLen, &clk, &invert, maxErr);
282 if (errCnt<0||BitLen<16){ //if fatal error (or -1)
283 if (g_debugMode) PrintAndLog("DEBUG: no data found %d, errors:%d, bitlen:%d, clock:%d",errCnt,invert,BitLen,clk);
284 return 0;
285 }
286 if (errCnt>maxErr){
287 if (g_debugMode) PrintAndLog("DEBUG: Too many errors found, errors:%d, bits:%d, clock:%d",errCnt, BitLen, clk);
288 return 0;
289 }
290 if (verbose || g_debugMode) PrintAndLog("\nUsing Clock:%d, Invert:%d, Bits Found:%d",clk,invert,BitLen);
291
292 //output
293 if (errCnt>0){
294 if (verbose || g_debugMode) PrintAndLog("# Errors during Demoding (shown as 7 in bit stream): %d",errCnt);
295 }
296 if (verbose || g_debugMode) PrintAndLog("ASK/Manchester decoded bitstream:");
297 // Now output the bitstream to the scrollback by line of 16 bits
298 setDemodBuf(BitStream,BitLen,0);
299 if (verbose || g_debugMode) printDemodBuff();
300 uint64_t lo =0;
301 uint32_t hi =0;
302 size_t idx=0;
303 if (emSearch){
304 if (Em410xDecode(BitStream, &BitLen, &idx, &hi, &lo)){
305 //set GraphBuffer for clone or sim command
306 setDemodBuf(BitStream, BitLen, idx);
307 if (g_debugMode){
308 PrintAndLog("DEBUG: idx: %d, Len: %d, Printing Demod Buffer:", idx, BitLen);
309 printDemodBuff();
310 }
311 if (verbose) PrintAndLog("EM410x pattern found: ");
312 if (verbose) printEM410x(hi, lo);
313 return 1;
314 }
315 }
316 return 1;
317 }
318
319 //by marshmellow
320 //takes 3 arguments - clock, invert, maxErr as integers
321 //attempts to demodulate ask while decoding manchester
322 //prints binary found and saves in graphbuffer for further commands
323 int Cmdaskmandemod(const char *Cmd)
324 {
325 char cmdp = param_getchar(Cmd, 0);
326 if (strlen(Cmd) > 20 || cmdp == 'h' || cmdp == 'H') {
327 PrintAndLog("Usage: data rawdemod am [clock] <0|1> [maxError] [setSmplLen]");
328 PrintAndLog(" [set clock as integer] optional, if not set, autodetect.");
329 PrintAndLog(" <invert>, 1 for invert output");
330 PrintAndLog(" [set maximum allowed errors], default = 100.");
331 PrintAndLog(" [set maximum Samples to read], default = 32768 (512 bits at rf/64).");
332 PrintAndLog("");
333 PrintAndLog(" sample: data rawdemod am = demod an ask/manchester tag from GraphBuffer");
334 PrintAndLog(" : data rawdemod am 32 = demod an ask/manchester tag from GraphBuffer using a clock of RF/32");
335 PrintAndLog(" : data rawdemod am 32 1 = demod an ask/manchester tag from GraphBuffer using a clock of RF/32 and inverting data");
336 PrintAndLog(" : data rawdemod am 1 = demod an ask/manchester tag from GraphBuffer while inverting data");
337 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");
338 return 0;
339 }
340 return ASKmanDemod(Cmd, TRUE, TRUE);
341 }
342
343 //by marshmellow
344 //manchester decode
345 //stricktly take 10 and 01 and convert to 0 and 1
346 int Cmdmandecoderaw(const char *Cmd)
347 {
348 int i =0;
349 int errCnt=0;
350 size_t size=0;
351 size_t maxErr = 20;
352 char cmdp = param_getchar(Cmd, 0);
353 if (strlen(Cmd) > 5 || cmdp == 'h' || cmdp == 'H') {
354 PrintAndLog("Usage: data manrawdecode [maxErr]");
355 PrintAndLog(" Takes 10 and 01 and converts to 0 and 1 respectively");
356 PrintAndLog(" --must have binary sequence in demodbuffer (run data askrawdemod first)");
357 PrintAndLog(" [maxErr] set number of errors allowed (default = 20)");
358 PrintAndLog("");
359 PrintAndLog(" sample: data manrawdecode = decode manchester bitstream from the demodbuffer");
360 return 0;
361 }
362 if (DemodBufferLen==0) return 0;
363 uint8_t BitStream[MAX_GRAPH_TRACE_LEN]={0};
364 int high=0,low=0;
365 for (;i<DemodBufferLen;++i){
366 if (DemodBuffer[i]>high) high=DemodBuffer[i];
367 else if(DemodBuffer[i]<low) low=DemodBuffer[i];
368 BitStream[i]=DemodBuffer[i];
369 }
370 if (high>7 || low <0 ){
371 PrintAndLog("Error: please raw demod the wave first then manchester raw decode");
372 return 0;
373 }
374
375 sscanf(Cmd, "%i", &maxErr);
376 size=i;
377 errCnt=manrawdecode(BitStream, &size);
378 if (errCnt>=maxErr){
379 PrintAndLog("Too many errors: %d",errCnt);
380 return 0;
381 }
382 PrintAndLog("Manchester Decoded - # errors:%d - data:",errCnt);
383 PrintAndLog("%s", sprint_bin_break(BitStream, size, 16));
384 if (errCnt==0){
385 uint64_t id = 0;
386 uint32_t hi = 0;
387 size_t idx=0;
388 if (Em410xDecode(BitStream, &size, &idx, &hi, &id)){
389 //need to adjust to set bitstream back to manchester encoded data
390 //setDemodBuf(BitStream, size, idx);
391
392 printEM410x(hi, id);
393 }
394 }
395 return 1;
396 }
397
398 //by marshmellow
399 //biphase decode
400 //take 01 or 10 = 0 and 11 or 00 = 1
401 //takes 2 arguments "offset" default = 0 if 1 it will shift the decode by one bit
402 // and "invert" default = 0 if 1 it will invert output
403 // the argument offset allows us to manually shift if the output is incorrect - [EDIT: now auto detects]
404 int CmdBiphaseDecodeRaw(const char *Cmd)
405 {
406 size_t size=0;
407 int offset=0, invert=0, maxErr=20, errCnt=0;
408 char cmdp = param_getchar(Cmd, 0);
409 if (strlen(Cmd) > 3 || cmdp == 'h' || cmdp == 'H') {
410 PrintAndLog("Usage: data biphaserawdecode [offset] [invert] [maxErr]");
411 PrintAndLog(" Converts 10 or 01 to 1 and 11 or 00 to 0");
412 PrintAndLog(" --must have binary sequence in demodbuffer (run data askrawdemod first)");
413 PrintAndLog(" --invert for Conditional Dephase Encoding (CDP) AKA Differential Manchester");
414 PrintAndLog("");
415 PrintAndLog(" [offset <0|1>], set to 0 not to adjust start position or to 1 to adjust decode start position");
416 PrintAndLog(" [invert <0|1>], set to 1 to invert output");
417 PrintAndLog(" [maxErr int], set max errors tolerated - default=20");
418 PrintAndLog("");
419 PrintAndLog(" sample: data biphaserawdecode = decode biphase bitstream from the demodbuffer");
420 PrintAndLog(" sample: data biphaserawdecode 1 1 = decode biphase bitstream from the demodbuffer, set offset, and invert output");
421 return 0;
422 }
423 sscanf(Cmd, "%i %i %i", &offset, &invert, &maxErr);
424 if (DemodBufferLen==0){
425 PrintAndLog("DemodBuffer Empty - run 'data rawdemod ar' first");
426 return 0;
427 }
428 uint8_t BitStream[MAX_GRAPH_TRACE_LEN]={0};
429 memcpy(BitStream, DemodBuffer, DemodBufferLen);
430 size = DemodBufferLen;
431 errCnt=BiphaseRawDecode(BitStream, &size, offset, invert);
432 if (errCnt<0){
433 PrintAndLog("Error during decode:%d", errCnt);
434 return 0;
435 }
436 if (errCnt>maxErr){
437 PrintAndLog("Too many errors attempting to decode: %d",errCnt);
438 return 0;
439 }
440
441 if (errCnt>0){
442 PrintAndLog("# Errors found during Demod (shown as 7 in bit stream): %d",errCnt);
443 }
444 PrintAndLog("Biphase Decoded using offset: %d - # invert:%d - data:",offset,invert);
445 PrintAndLog("%s", sprint_bin_break(BitStream, size, 16));
446
447 if (offset) setDemodBuf(DemodBuffer,DemodBufferLen-offset, offset); //remove first bit from raw demod
448 return 1;
449 }
450
451 //by marshmellow
452 //takes 4 arguments - clock, invert, maxErr as integers and amplify as char
453 //attempts to demodulate ask only
454 //prints binary found and saves in graphbuffer for further commands
455 int ASKrawDemod(const char *Cmd, bool verbose)
456 {
457 int invert=0;
458 int clk=0;
459 int maxErr=100;
460 uint8_t askAmp = 0;
461 char amp = param_getchar(Cmd, 0);
462 uint8_t BitStream[MAX_GRAPH_TRACE_LEN]={0};
463 sscanf(Cmd, "%i %i %i %c", &clk, &invert, &maxErr, &amp);
464 if (invert != 0 && invert != 1) {
465 if (verbose || g_debugMode) PrintAndLog("Invalid argument: %s", Cmd);
466 return 0;
467 }
468 if (clk==1){
469 invert=1;
470 clk=0;
471 }
472 if (amp == 'a' || amp == 'A') askAmp=1;
473 size_t BitLen = getFromGraphBuf(BitStream);
474 if (BitLen==0) return 0;
475 int errCnt = askrawdemod(BitStream, &BitLen, &clk, &invert, maxErr, askAmp);
476 if (errCnt==-1||BitLen<16){ //throw away static - allow 1 and -1 (in case of threshold command first)
477 if (verbose || g_debugMode) PrintAndLog("no data found");
478 if (g_debugMode) PrintAndLog("errCnt: %d, BitLen: %d, clk: %d, invert: %d", errCnt, BitLen, clk, invert);
479 return 0;
480 }
481 if (errCnt>maxErr) {
482 if (g_debugMode)
483 PrintAndLog("Too many errors found, errCnt: %d, BitLen: %d, clk: %d, invert: %d", errCnt, BitLen, clk, invert);
484 return 0;
485 }
486 if (verbose || g_debugMode)
487 PrintAndLog("Using Clock: %d - invert: %d - Bits Found: %d", clk, invert, BitLen);
488
489 //move BitStream back to DemodBuffer
490 setDemodBuf(BitStream,BitLen,0);
491
492 //output
493 if (errCnt>0 && (verbose || g_debugMode)){
494 PrintAndLog("# Errors during Demoding (shown as 7 in bit stream): %d", errCnt);
495 }
496 if (verbose || g_debugMode){
497 PrintAndLog("ASK demoded bitstream:");
498 // Now output the bitstream to the scrollback by line of 16 bits
499 printDemodBuff();
500 }
501 return 1;
502 }
503
504 //by marshmellow
505 // - ASK Demod then Biphase decode GraphBuffer samples
506 int ASKbiphaseDemod(const char *Cmd, bool verbose)
507 {
508 //ask raw demod GraphBuffer first
509 int offset=0, clk=0, invert=0, maxErr=0, ans=0;
510 ans = sscanf(Cmd, "%i %i %i %i", &offset, &clk, &invert, &maxErr);
511 if (ans>0)
512 ans = ASKrawDemod(Cmd+1, FALSE);
513 else
514 ans = ASKrawDemod(Cmd, FALSE);
515 if (!ans) {
516 if (g_debugMode || verbose) PrintAndLog("Error AskrawDemod: %d", ans);
517 return 0;
518 }
519
520 //attempt to Biphase decode DemodBuffer
521 size_t size = DemodBufferLen;
522 uint8_t BitStream[MAX_DEMOD_BUF_LEN];
523 memcpy(BitStream, DemodBuffer, DemodBufferLen);
524
525 int errCnt = BiphaseRawDecode(BitStream, &size, offset, invert);
526 if (errCnt < 0){
527 if (g_debugMode || verbose) PrintAndLog("Error BiphaseRawDecode: %d", errCnt);
528 return 0;
529 }
530 if (errCnt > maxErr) {
531 if (g_debugMode || verbose) PrintAndLog("Error BiphaseRawDecode too many errors: %d", errCnt);
532 return 0;
533 }
534 //success set DemodBuffer and return
535 setDemodBuf(BitStream, size, 0);
536 if (g_debugMode || verbose){
537 PrintAndLog("Biphase Decoded using offset: %d - # errors:%d - data:",offset,errCnt);
538 printDemodBuff();
539 }
540 return 1;
541 }
542 //by marshmellow - see ASKbiphaseDemod
543 int Cmdaskbiphdemod(const char *Cmd)
544 {
545 char cmdp = param_getchar(Cmd, 0);
546 if (strlen(Cmd) > 12 || cmdp == 'h' || cmdp == 'H') {
547 PrintAndLog("Usage: data rawdemod ab [offset] [clock] <invert> [maxError] <amplify>");
548 PrintAndLog(" [offset], offset to begin biphase, default=0");
549 PrintAndLog(" [set clock as integer] optional, if not set, autodetect");
550 PrintAndLog(" <invert>, 1 to invert output");
551 PrintAndLog(" [set maximum allowed errors], default = 100");
552 PrintAndLog(" <amplify>, 'a' to attempt demod with ask amplification, default = no amp");
553 PrintAndLog(" NOTE: <invert> can be entered as second or third argument");
554 PrintAndLog(" NOTE: <amplify> can be entered as first, second or last argument");
555 PrintAndLog(" NOTE: any other arg must have previous args set to work");
556 PrintAndLog("");
557 PrintAndLog(" NOTE: --invert for Conditional Dephase Encoding (CDP) AKA Differential Manchester");
558 PrintAndLog("");
559 PrintAndLog(" sample: data rawdemod ab = demod an ask/biph tag from GraphBuffer");
560 PrintAndLog(" : data rawdemod ab a = demod an ask/biph tag from GraphBuffer, amplified");
561 PrintAndLog(" : data rawdemod ab 1 32 = demod an ask/biph tag from GraphBuffer using an offset of 1 and a clock of RF/32");
562 PrintAndLog(" : data rawdemod ab 0 32 1 = demod an ask/biph tag from GraphBuffer using a clock of RF/32 and inverting data");
563 PrintAndLog(" : data rawdemod ab 0 1 = demod an ask/biph tag from GraphBuffer while inverting data");
564 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");
565 PrintAndLog(" : data rawdemod ab 0 64 1 0 a = demod an ask/biph tag from GraphBuffer using a clock of RF/64, inverting data and allowing 0 demod errors, and amp");
566 return 0;
567 }
568 return ASKbiphaseDemod(Cmd, TRUE);
569 }
570
571 //by marshmellow
572 //attempts to demodulate and identify a G_Prox_II verex/chubb card
573 //WARNING: if it fails during some points it will destroy the DemodBuffer data
574 // but will leave the GraphBuffer intact.
575 //if successful it will push askraw data back to demod buffer ready for emulation
576 int CmdG_Prox_II_Demod(const char *Cmd)
577 {
578 if (!ASKbiphaseDemod(Cmd, FALSE)){
579 if (g_debugMode) PrintAndLog("ASKbiphaseDemod failed 1st try");
580 return 0;
581 }
582 size_t size = DemodBufferLen;
583 //call lfdemod.c demod for gProxII
584 int ans = gProxII_Demod(DemodBuffer, &size);
585 if (ans < 0){
586 if (g_debugMode) PrintAndLog("Error gProxII_Demod");
587 return 0;
588 }
589 //got a good demod
590 uint32_t ByteStream[65] = {0x00};
591 uint8_t xorKey=0;
592 uint8_t keyCnt=0;
593 uint8_t bitCnt=0;
594 uint8_t ByteCnt=0;
595 size_t startIdx = ans + 6; //start after preamble
596 for (size_t idx = 0; idx<size-6; idx++){
597 if ((idx+1) % 5 == 0){
598 //spacer bit - should be 0
599 if (DemodBuffer[startIdx+idx] != 0) {
600 if (g_debugMode) PrintAndLog("Error spacer not 0: %d, pos: %d",DemodBuffer[startIdx+idx],startIdx+idx);
601 return 0;
602 }
603 continue;
604 }
605 if (keyCnt<8){ //lsb first
606 xorKey = xorKey | (DemodBuffer[startIdx+idx]<<keyCnt);
607 keyCnt++;
608 if (keyCnt==8 && g_debugMode) PrintAndLog("xorKey Found: %02x", xorKey);
609 continue;
610 }
611 //lsb first
612 ByteStream[ByteCnt] = ByteStream[ByteCnt] | (DemodBuffer[startIdx+idx]<<bitCnt);
613 bitCnt++;
614 if (bitCnt % 8 == 0){
615 if (g_debugMode) PrintAndLog("byte %d: %02x",ByteCnt,ByteStream[ByteCnt]);
616 bitCnt=0;
617 ByteCnt++;
618 }
619 }
620 for (uint8_t i = 0; i < ByteCnt; i++){
621 ByteStream[i] ^= xorKey; //xor
622 if (g_debugMode) PrintAndLog("byte %d after xor: %02x", i, ByteStream[i]);
623 }
624 //now ByteStream contains 64 bytes of decrypted raw tag data
625 //
626 uint8_t fmtLen = ByteStream[0]>>2;
627 uint32_t FC = 0;
628 uint32_t Card = 0;
629 uint32_t raw1 = bytebits_to_byte(DemodBuffer+ans,32);
630 uint32_t raw2 = bytebits_to_byte(DemodBuffer+ans+32, 32);
631 uint32_t raw3 = bytebits_to_byte(DemodBuffer+ans+64, 32);
632
633 if (fmtLen==36){
634 FC = ((ByteStream[3] & 0x7F)<<7) | (ByteStream[4]>>1);
635 Card = ((ByteStream[4]&1)<<19) | (ByteStream[5]<<11) | (ByteStream[6]<<3) | (ByteStream[7]>>5);
636 PrintAndLog("G-Prox-II Found: FmtLen %d, FC %d, Card %d",fmtLen,FC,Card);
637 } else if(fmtLen==26){
638 FC = ((ByteStream[3] & 0x7F)<<1) | (ByteStream[4]>>7);
639 Card = ((ByteStream[4]&0x7F)<<9) | (ByteStream[5]<<1) | (ByteStream[6]>>7);
640 PrintAndLog("G-Prox-II Found: FmtLen %d, FC %d, Card %d",fmtLen,FC,Card);
641 } else {
642 PrintAndLog("Unknown G-Prox-II Fmt Found: FmtLen %d",fmtLen);
643 }
644 PrintAndLog("Raw: %08x%08x%08x", raw1,raw2,raw3);
645 setDemodBuf(DemodBuffer+ans, 96, 0);
646 return 1;
647 }
648
649 //by marshmellow - see ASKrawDemod
650 int Cmdaskrawdemod(const char *Cmd)
651 {
652 char cmdp = param_getchar(Cmd, 0);
653 if (strlen(Cmd) > 12 || cmdp == 'h' || cmdp == 'H') {
654 PrintAndLog("Usage: data rawdemod ar [clock] <invert> [maxError] [amplify]");
655 PrintAndLog(" [set clock as integer] optional, if not set, autodetect");
656 PrintAndLog(" <invert>, 1 to invert output");
657 PrintAndLog(" [set maximum allowed errors], default = 100");
658 PrintAndLog(" <amplify>, 'a' to attempt demod with ask amplification, default = no amp");
659 PrintAndLog("");
660 PrintAndLog(" sample: data rawdemod ar = demod an ask tag from GraphBuffer");
661 PrintAndLog(" : data rawdemod ar a = demod an ask tag from GraphBuffer, amplified");
662 PrintAndLog(" : data rawdemod ar 32 = demod an ask tag from GraphBuffer using a clock of RF/32");
663 PrintAndLog(" : data rawdemod ar 32 1 = demod an ask tag from GraphBuffer using a clock of RF/32 and inverting data");
664 PrintAndLog(" : data rawdemod ar 1 = demod an ask tag from GraphBuffer while inverting data");
665 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");
666 PrintAndLog(" : data rawdemod ar 64 1 0 a = demod an ask tag from GraphBuffer using a clock of RF/64, inverting data and allowing 0 demod errors, and amp");
667 return 0;
668 }
669 return ASKrawDemod(Cmd, TRUE);
670 }
671
672 int AutoCorrelate(int window, bool SaveGrph, bool verbose)
673 {
674 static int CorrelBuffer[MAX_GRAPH_TRACE_LEN];
675 size_t Correlation = 0;
676 int maxSum = 0;
677 int lastMax = 0;
678 if (verbose) PrintAndLog("performing %d correlations", GraphTraceLen - window);
679 for (int i = 0; i < GraphTraceLen - window; ++i) {
680 int sum = 0;
681 for (int j = 0; j < window; ++j) {
682 sum += (GraphBuffer[j]*GraphBuffer[i + j]) / 256;
683 }
684 CorrelBuffer[i] = sum;
685 if (sum >= maxSum-100 && sum <= maxSum+100){
686 //another max
687 Correlation = i-lastMax;
688 lastMax = i;
689 if (sum > maxSum) maxSum = sum;
690 } else if (sum > maxSum){
691 maxSum=sum;
692 lastMax = i;
693 }
694 }
695 if (Correlation==0){
696 //try again with wider margin
697 for (int i = 0; i < GraphTraceLen - window; i++){
698 if (CorrelBuffer[i] >= maxSum-(maxSum*0.05) && CorrelBuffer[i] <= maxSum+(maxSum*0.05)){
699 //another max
700 Correlation = i-lastMax;
701 lastMax = i;
702 //if (CorrelBuffer[i] > maxSum) maxSum = sum;
703 }
704 }
705 }
706 if (verbose && Correlation > 0) PrintAndLog("Possible Correlation: %d samples",Correlation);
707
708 if (SaveGrph){
709 GraphTraceLen = GraphTraceLen - window;
710 memcpy(GraphBuffer, CorrelBuffer, GraphTraceLen * sizeof (int));
711 RepaintGraphWindow();
712 }
713 return Correlation;
714 }
715
716 int usage_data_autocorr(void)
717 {
718 //print help
719 PrintAndLog("Usage: data autocorr [window] [g]");
720 PrintAndLog("Options: ");
721 PrintAndLog(" h This help");
722 PrintAndLog(" [window] window length for correlation - default = 4000");
723 PrintAndLog(" g save back to GraphBuffer (overwrite)");
724 return 0;
725 }
726
727 int CmdAutoCorr(const char *Cmd)
728 {
729 char cmdp = param_getchar(Cmd, 0);
730 if (cmdp == 'h' || cmdp == 'H')
731 return usage_data_autocorr();
732 int window = 4000; //set default
733 char grph=0;
734 bool updateGrph = FALSE;
735 sscanf(Cmd, "%i %c", &window, &grph);
736
737 if (window >= GraphTraceLen) {
738 PrintAndLog("window must be smaller than trace (%d samples)",
739 GraphTraceLen);
740 return 0;
741 }
742 if (grph == 'g') updateGrph=TRUE;
743 return AutoCorrelate(window, updateGrph, TRUE);
744 }
745
746 int CmdBitsamples(const char *Cmd)
747 {
748 int cnt = 0;
749 uint8_t got[12288];
750
751 GetFromBigBuf(got,sizeof(got),0);
752 WaitForResponse(CMD_ACK,NULL);
753
754 for (int j = 0; j < sizeof(got); j++) {
755 for (int k = 0; k < 8; k++) {
756 if(got[j] & (1 << (7 - k))) {
757 GraphBuffer[cnt++] = 1;
758 } else {
759 GraphBuffer[cnt++] = 0;
760 }
761 }
762 }
763 GraphTraceLen = cnt;
764 RepaintGraphWindow();
765 return 0;
766 }
767
768 int CmdBuffClear(const char *Cmd)
769 {
770 UsbCommand c = {CMD_BUFF_CLEAR};
771 SendCommand(&c);
772 ClearGraph(true);
773 return 0;
774 }
775
776 int CmdDec(const char *Cmd)
777 {
778 for (int i = 0; i < (GraphTraceLen / 2); ++i)
779 GraphBuffer[i] = GraphBuffer[i * 2];
780 GraphTraceLen /= 2;
781 PrintAndLog("decimated by 2");
782 RepaintGraphWindow();
783 return 0;
784 }
785 /**
786 * Undecimate - I'd call it 'interpolate', but we'll save that
787 * name until someone does an actual interpolation command, not just
788 * blindly repeating samples
789 * @param Cmd
790 * @return
791 */
792 int CmdUndec(const char *Cmd)
793 {
794 if(param_getchar(Cmd, 0) == 'h')
795 {
796 PrintAndLog("Usage: data undec [factor]");
797 PrintAndLog("This function performs un-decimation, by repeating each sample N times");
798 PrintAndLog("Options: ");
799 PrintAndLog(" h This help");
800 PrintAndLog(" factor The number of times to repeat each sample.[default:2]");
801 PrintAndLog("Example: 'data undec 3'");
802 return 0;
803 }
804
805 uint8_t factor = param_get8ex(Cmd, 0,2, 10);
806 //We have memory, don't we?
807 int swap[MAX_GRAPH_TRACE_LEN] = { 0 };
808 uint32_t g_index = 0 ,s_index = 0;
809 while(g_index < GraphTraceLen && s_index < MAX_GRAPH_TRACE_LEN)
810 {
811 int count = 0;
812 for(count = 0; count < factor && s_index+count < MAX_GRAPH_TRACE_LEN; count ++)
813 swap[s_index+count] = GraphBuffer[g_index];
814 s_index+=count;
815 }
816
817 memcpy(GraphBuffer,swap, s_index * sizeof(int));
818 GraphTraceLen = s_index;
819 RepaintGraphWindow();
820 return 0;
821 }
822
823 //by marshmellow
824 //shift graph zero up or down based on input + or -
825 int CmdGraphShiftZero(const char *Cmd)
826 {
827
828 int shift=0;
829 //set options from parameters entered with the command
830 sscanf(Cmd, "%i", &shift);
831 int shiftedVal=0;
832 for(int i = 0; i<GraphTraceLen; i++){
833 shiftedVal=GraphBuffer[i]+shift;
834 if (shiftedVal>127)
835 shiftedVal=127;
836 else if (shiftedVal<-127)
837 shiftedVal=-127;
838 GraphBuffer[i]= shiftedVal;
839 }
840 CmdNorm("");
841 return 0;
842 }
843
844 //by marshmellow
845 //use large jumps in read samples to identify edges of waves and then amplify that wave to max
846 //similar to dirtheshold, threshold commands
847 //takes a threshold length which is the measured length between two samples then determines an edge
848 int CmdAskEdgeDetect(const char *Cmd)
849 {
850 int thresLen = 25;
851 sscanf(Cmd, "%i", &thresLen);
852 int shift = 127;
853 int shiftedVal=0;
854 for(int i = 1; i<GraphTraceLen; i++){
855 if (GraphBuffer[i]-GraphBuffer[i-1]>=thresLen) //large jump up
856 shift=127;
857 else if(GraphBuffer[i]-GraphBuffer[i-1]<=-1*thresLen) //large jump down
858 shift=-127;
859
860 shiftedVal=GraphBuffer[i]+shift;
861
862 if (shiftedVal>127)
863 shiftedVal=127;
864 else if (shiftedVal<-127)
865 shiftedVal=-127;
866 GraphBuffer[i-1] = shiftedVal;
867 }
868 RepaintGraphWindow();
869 //CmdNorm("");
870 return 0;
871 }
872
873 /* Print our clock rate */
874 // uses data from graphbuffer
875 // adjusted to take char parameter for type of modulation to find the clock - by marshmellow.
876 int CmdDetectClockRate(const char *Cmd)
877 {
878 char cmdp = param_getchar(Cmd, 0);
879 if (strlen(Cmd) > 3 || strlen(Cmd) == 0 || cmdp == 'h' || cmdp == 'H') {
880 PrintAndLog("Usage: data detectclock [modulation]");
881 PrintAndLog(" [modulation as char], specify the modulation type you want to detect the clock of");
882 PrintAndLog(" 'a' = ask, 'f' = fsk, 'n' = nrz/direct, 'p' = psk");
883 PrintAndLog("");
884 PrintAndLog(" sample: data detectclock a = detect the clock of an ask modulated wave in the GraphBuffer");
885 PrintAndLog(" data detectclock f = detect the clock of an fsk modulated wave in the GraphBuffer");
886 PrintAndLog(" data detectclock p = detect the clock of an psk modulated wave in the GraphBuffer");
887 PrintAndLog(" data detectclock n = detect the clock of an nrz/direct modulated wave in the GraphBuffer");
888 }
889 int ans=0;
890 if (cmdp == 'a'){
891 ans = GetAskClock("", true, false);
892 } else if (cmdp == 'f'){
893 ans = GetFskClock("", true, false);
894 } else if (cmdp == 'n'){
895 ans = GetNrzClock("", true, false);
896 } else if (cmdp == 'p'){
897 ans = GetPskClock("", true, false);
898 } else {
899 PrintAndLog ("Please specify a valid modulation to detect the clock of - see option h for help");
900 }
901 return ans;
902 }
903
904 char *GetFSKType(uint8_t fchigh, uint8_t fclow, uint8_t invert)
905 {
906 char *fskType;
907 if (fchigh==10 && fclow==8){
908 if (invert) //fsk2a
909 fskType = "FSK2a";
910 else //fsk2
911 fskType = "FSK2";
912 } else if (fchigh == 8 && fclow == 5) {
913 if (invert)
914 fskType = "FSK1";
915 else
916 fskType = "FSK1a";
917 } else {
918 fskType = "FSK??";
919 }
920 return fskType;
921 }
922
923 //by marshmellow
924 //fsk raw demod and print binary
925 //takes 4 arguments - Clock, invert, fchigh, fclow
926 //defaults: clock = 50, invert=1, fchigh=10, fclow=8 (RF/10 RF/8 (fsk2a))
927 int FSKrawDemod(const char *Cmd, bool verbose)
928 {
929 //raw fsk demod no manchester decoding no start bit finding just get binary from wave
930 //set defaults
931 int rfLen = 0;
932 int invert = 0;
933 int fchigh = 0;
934 int fclow = 0;
935
936 //set options from parameters entered with the command
937 sscanf(Cmd, "%i %i %i %i", &rfLen, &invert, &fchigh, &fclow);
938
939 if (strlen(Cmd)>0 && strlen(Cmd)<=2) {
940 if (rfLen==1){
941 invert = 1; //if invert option only is used
942 rfLen = 0;
943 }
944 }
945
946 uint8_t BitStream[MAX_GRAPH_TRACE_LEN]={0};
947 size_t BitLen = getFromGraphBuf(BitStream);
948 if (BitLen==0) return 0;
949 //get field clock lengths
950 uint16_t fcs=0;
951 if (fchigh==0 || fclow == 0){
952 fcs = countFC(BitStream, BitLen, 1);
953 if (fcs==0){
954 fchigh=10;
955 fclow=8;
956 }else{
957 fchigh = (fcs >> 8) & 0xFF;
958 fclow = fcs & 0xFF;
959 }
960 }
961 //get bit clock length
962 if (rfLen==0){
963 rfLen = detectFSKClk(BitStream, BitLen, fchigh, fclow);
964 if (rfLen == 0) rfLen = 50;
965 }
966 int size = fskdemod(BitStream,BitLen,(uint8_t)rfLen,(uint8_t)invert,(uint8_t)fchigh,(uint8_t)fclow);
967 if (size>0){
968 setDemodBuf(BitStream,size,0);
969
970 // Now output the bitstream to the scrollback by line of 16 bits
971 if (verbose || g_debugMode) {
972 PrintAndLog("\nUsing Clock:%d, invert:%d, fchigh:%d, fclow:%d", rfLen, invert, fchigh, fclow);
973 PrintAndLog("%s decoded bitstream:",GetFSKType(fchigh,fclow,invert));
974 printDemodBuff();
975 }
976
977 return 1;
978 } else{
979 if (g_debugMode) PrintAndLog("no FSK data found");
980 }
981 return 0;
982 }
983
984 //by marshmellow
985 //fsk raw demod and print binary
986 //takes 4 arguments - Clock, invert, fchigh, fclow
987 //defaults: clock = 50, invert=1, fchigh=10, fclow=8 (RF/10 RF/8 (fsk2a))
988 int CmdFSKrawdemod(const char *Cmd)
989 {
990 char cmdp = param_getchar(Cmd, 0);
991 if (strlen(Cmd) > 10 || cmdp == 'h' || cmdp == 'H') {
992 PrintAndLog("Usage: data rawdemod fs [clock] <invert> [fchigh] [fclow]");
993 PrintAndLog(" [set clock as integer] optional, omit for autodetect.");
994 PrintAndLog(" <invert>, 1 for invert output, can be used even if the clock is omitted");
995 PrintAndLog(" [fchigh], larger field clock length, omit for autodetect");
996 PrintAndLog(" [fclow], small field clock length, omit for autodetect");
997 PrintAndLog("");
998 PrintAndLog(" sample: data rawdemod fs = demod an fsk tag from GraphBuffer using autodetect");
999 PrintAndLog(" : data rawdemod fs 32 = demod an fsk tag from GraphBuffer using a clock of RF/32, autodetect fc");
1000 PrintAndLog(" : data rawdemod fs 1 = demod an fsk tag from GraphBuffer using autodetect, invert output");
1001 PrintAndLog(" : data rawdemod fs 32 1 = demod an fsk tag from GraphBuffer using a clock of RF/32, invert output, autodetect fc");
1002 PrintAndLog(" : data rawdemod fs 64 0 8 5 = demod an fsk1 RF/64 tag from GraphBuffer");
1003 PrintAndLog(" : data rawdemod fs 50 0 10 8 = demod an fsk2 RF/50 tag from GraphBuffer");
1004 PrintAndLog(" : data rawdemod fs 50 1 10 8 = demod an fsk2a RF/50 tag from GraphBuffer");
1005 return 0;
1006 }
1007 return FSKrawDemod(Cmd, TRUE);
1008 }
1009
1010 //by marshmellow (based on existing demod + holiman's refactor)
1011 //HID Prox demod - FSK RF/50 with preamble of 00011101 (then manchester encoded)
1012 //print full HID Prox ID and some bit format details if found
1013 int CmdFSKdemodHID(const char *Cmd)
1014 {
1015 //raw fsk demod no manchester decoding no start bit finding just get binary from wave
1016 uint32_t hi2=0, hi=0, lo=0;
1017
1018 uint8_t BitStream[MAX_GRAPH_TRACE_LEN]={0};
1019 size_t BitLen = getFromGraphBuf(BitStream);
1020 if (BitLen==0) return 0;
1021 //get binary from fsk wave
1022 int idx = HIDdemodFSK(BitStream,&BitLen,&hi2,&hi,&lo);
1023 if (idx<0){
1024 if (g_debugMode){
1025 if (idx==-1){
1026 PrintAndLog("DEBUG: Just Noise Detected");
1027 } else if (idx == -2) {
1028 PrintAndLog("DEBUG: Error demoding fsk");
1029 } else if (idx == -3) {
1030 PrintAndLog("DEBUG: Preamble not found");
1031 } else if (idx == -4) {
1032 PrintAndLog("DEBUG: Error in Manchester data, SIZE: %d", BitLen);
1033 } else {
1034 PrintAndLog("DEBUG: Error demoding fsk %d", idx);
1035 }
1036 }
1037 return 0;
1038 }
1039 if (hi2==0 && hi==0 && lo==0) {
1040 if (g_debugMode) PrintAndLog("DEBUG: Error - no values found");
1041 return 0;
1042 }
1043 if (hi2 != 0){ //extra large HID tags
1044 PrintAndLog("HID Prox TAG ID: %x%08x%08x (%d)",
1045 (unsigned int) hi2, (unsigned int) hi, (unsigned int) lo, (unsigned int) (lo>>1) & 0xFFFF);
1046 }
1047 else { //standard HID tags <38 bits
1048 uint8_t fmtLen = 0;
1049 uint32_t fc = 0;
1050 uint32_t cardnum = 0;
1051 if (((hi>>5)&1)==1){//if bit 38 is set then < 37 bit format is used
1052 uint32_t lo2=0;
1053 lo2=(((hi & 31) << 12) | (lo>>20)); //get bits 21-37 to check for format len bit
1054 uint8_t idx3 = 1;
1055 while(lo2>1){ //find last bit set to 1 (format len bit)
1056 lo2=lo2>>1;
1057 idx3++;
1058 }
1059 fmtLen =idx3+19;
1060 fc =0;
1061 cardnum=0;
1062 if(fmtLen==26){
1063 cardnum = (lo>>1)&0xFFFF;
1064 fc = (lo>>17)&0xFF;
1065 }
1066 if(fmtLen==34){
1067 cardnum = (lo>>1)&0xFFFF;
1068 fc= ((hi&1)<<15)|(lo>>17);
1069 }
1070 if(fmtLen==35){
1071 cardnum = (lo>>1)&0xFFFFF;
1072 fc = ((hi&1)<<11)|(lo>>21);
1073 }
1074 }
1075 else { //if bit 38 is not set then 37 bit format is used
1076 fmtLen = 37;
1077 fc = 0;
1078 cardnum = 0;
1079 if(fmtLen == 37){
1080 cardnum = (lo>>1)&0x7FFFF;
1081 fc = ((hi&0xF)<<12)|(lo>>20);
1082 }
1083 }
1084 PrintAndLog("HID Prox TAG ID: %x%08x (%d) - Format Len: %dbit - FC: %d - Card: %d",
1085 (unsigned int) hi, (unsigned int) lo, (unsigned int) (lo>>1) & 0xFFFF,
1086 (unsigned int) fmtLen, (unsigned int) fc, (unsigned int) cardnum);
1087 }
1088 setDemodBuf(BitStream,BitLen,idx);
1089 if (g_debugMode){
1090 PrintAndLog("DEBUG: idx: %d, Len: %d, Printing Demod Buffer:", idx, BitLen);
1091 printDemodBuff();
1092 }
1093 return 1;
1094 }
1095
1096 //by marshmellow
1097 //Paradox Prox demod - FSK RF/50 with preamble of 00001111 (then manchester encoded)
1098 //print full Paradox Prox ID and some bit format details if found
1099 int CmdFSKdemodParadox(const char *Cmd)
1100 {
1101 //raw fsk demod no manchester decoding no start bit finding just get binary from wave
1102 uint32_t hi2=0, hi=0, lo=0;
1103
1104 uint8_t BitStream[MAX_GRAPH_TRACE_LEN]={0};
1105 size_t BitLen = getFromGraphBuf(BitStream);
1106 if (BitLen==0) return 0;
1107 //get binary from fsk wave
1108 int idx = ParadoxdemodFSK(BitStream,&BitLen,&hi2,&hi,&lo);
1109 if (idx<0){
1110 if (g_debugMode){
1111 if (idx==-1){
1112 PrintAndLog("DEBUG: Just Noise Detected");
1113 } else if (idx == -2) {
1114 PrintAndLog("DEBUG: Error demoding fsk");
1115 } else if (idx == -3) {
1116 PrintAndLog("DEBUG: Preamble not found");
1117 } else if (idx == -4) {
1118 PrintAndLog("DEBUG: Error in Manchester data");
1119 } else {
1120 PrintAndLog("DEBUG: Error demoding fsk %d", idx);
1121 }
1122 }
1123 return 0;
1124 }
1125 if (hi2==0 && hi==0 && lo==0){
1126 if (g_debugMode) PrintAndLog("DEBUG: Error - no value found");
1127 return 0;
1128 }
1129 uint32_t fc = ((hi & 0x3)<<6) | (lo>>26);
1130 uint32_t cardnum = (lo>>10)&0xFFFF;
1131 uint32_t rawLo = bytebits_to_byte(BitStream+idx+64,32);
1132 uint32_t rawHi = bytebits_to_byte(BitStream+idx+32,32);
1133 uint32_t rawHi2 = bytebits_to_byte(BitStream+idx,32);
1134
1135 PrintAndLog("Paradox TAG ID: %x%08x - FC: %d - Card: %d - Checksum: %02x - RAW: %08x%08x%08x",
1136 hi>>10, (hi & 0x3)<<26 | (lo>>10), fc, cardnum, (lo>>2) & 0xFF, rawHi2, rawHi, rawLo);
1137 setDemodBuf(BitStream,BitLen,idx);
1138 if (g_debugMode){
1139 PrintAndLog("DEBUG: idx: %d, len: %d, Printing Demod Buffer:", idx, BitLen);
1140 printDemodBuff();
1141 }
1142 return 1;
1143 }
1144
1145 //by marshmellow
1146 //IO-Prox demod - FSK RF/64 with preamble of 000000001
1147 //print ioprox ID and some format details
1148 int CmdFSKdemodIO(const char *Cmd)
1149 {
1150 //raw fsk demod no manchester decoding no start bit finding just get binary from wave
1151 //set defaults
1152 int idx=0;
1153 //something in graphbuffer?
1154 if (GraphTraceLen < 65) {
1155 if (g_debugMode)PrintAndLog("DEBUG: not enough samples in GraphBuffer");
1156 return 0;
1157 }
1158 uint8_t BitStream[MAX_GRAPH_TRACE_LEN]={0};
1159 size_t BitLen = getFromGraphBuf(BitStream);
1160 if (BitLen==0) return 0;
1161
1162 //get binary from fsk wave
1163 idx = IOdemodFSK(BitStream,BitLen);
1164 if (idx<0){
1165 if (g_debugMode){
1166 if (idx==-1){
1167 PrintAndLog("DEBUG: Just Noise Detected");
1168 } else if (idx == -2) {
1169 PrintAndLog("DEBUG: not enough samples");
1170 } else if (idx == -3) {
1171 PrintAndLog("DEBUG: error during fskdemod");
1172 } else if (idx == -4) {
1173 PrintAndLog("DEBUG: Preamble not found");
1174 } else if (idx == -5) {
1175 PrintAndLog("DEBUG: Separator bits not found");
1176 } else {
1177 PrintAndLog("DEBUG: Error demoding fsk %d", idx);
1178 }
1179 }
1180 return 0;
1181 }
1182 if (idx==0){
1183 if (g_debugMode){
1184 PrintAndLog("DEBUG: IO Prox Data not found - FSK Bits: %d",BitLen);
1185 if (BitLen > 92) PrintAndLog("%s", sprint_bin_break(BitStream,92,16));
1186 }
1187 return 0;
1188 }
1189 //Index map
1190 //0 10 20 30 40 50 60
1191 //| | | | | | |
1192 //01234567 8 90123456 7 89012345 6 78901234 5 67890123 4 56789012 3 45678901 23
1193 //-----------------------------------------------------------------------------
1194 //00000000 0 11110000 1 facility 1 version* 1 code*one 1 code*two 1 ???????? 11
1195 //
1196 //XSF(version)facility:codeone+codetwo (raw)
1197 //Handle the data
1198 if (idx+64>BitLen) {
1199 if (g_debugMode) PrintAndLog("not enough bits found - bitlen: %d",BitLen);
1200 return 0;
1201 }
1202 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]);
1203 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]);
1204 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]);
1205 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]);
1206 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]);
1207 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]);
1208 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]);
1209
1210 uint32_t code = bytebits_to_byte(BitStream+idx,32);
1211 uint32_t code2 = bytebits_to_byte(BitStream+idx+32,32);
1212 uint8_t version = bytebits_to_byte(BitStream+idx+27,8); //14,4
1213 uint8_t facilitycode = bytebits_to_byte(BitStream+idx+18,8) ;
1214 uint16_t number = (bytebits_to_byte(BitStream+idx+36,8)<<8)|(bytebits_to_byte(BitStream+idx+45,8)); //36,9
1215 uint8_t crc = bytebits_to_byte(BitStream+idx+54,8);
1216 uint16_t calccrc = 0;
1217
1218 for (uint8_t i=1; i<6; ++i){
1219 calccrc += bytebits_to_byte(BitStream+idx+9*i,8);
1220 }
1221 calccrc &= 0xff;
1222 calccrc = 0xff - calccrc;
1223
1224 char *crcStr = (crc == calccrc) ? "crc ok": "!crc";
1225
1226 PrintAndLog("IO Prox XSF(%02d)%02x:%05d (%08x%08x) [%02x %s]",version,facilitycode,number,code,code2, crc, crcStr);
1227 setDemodBuf(BitStream,64,idx);
1228 if (g_debugMode){
1229 PrintAndLog("DEBUG: idx: %d, Len: %d, Printing demod buffer:",idx,64);
1230 printDemodBuff();
1231 }
1232 return 1;
1233 }
1234
1235 //by marshmellow
1236 //AWID Prox demod - FSK RF/50 with preamble of 00000001 (always a 96 bit data stream)
1237 //print full AWID Prox ID and some bit format details if found
1238 int CmdFSKdemodAWID(const char *Cmd)
1239 {
1240
1241 //int verbose=1;
1242 //sscanf(Cmd, "%i", &verbose);
1243
1244 //raw fsk demod no manchester decoding no start bit finding just get binary from wave
1245 uint8_t BitStream[MAX_GRAPH_TRACE_LEN]={0};
1246 size_t size = getFromGraphBuf(BitStream);
1247 if (size==0) return 0;
1248
1249 //get binary from fsk wave
1250 int idx = AWIDdemodFSK(BitStream, &size);
1251 if (idx<=0){
1252 if (g_debugMode==1){
1253 if (idx == -1)
1254 PrintAndLog("DEBUG: Error - not enough samples");
1255 else if (idx == -2)
1256 PrintAndLog("DEBUG: Error - only noise found");
1257 else if (idx == -3)
1258 PrintAndLog("DEBUG: Error - problem during FSK demod");
1259 else if (idx == -4)
1260 PrintAndLog("DEBUG: Error - AWID preamble not found");
1261 else if (idx == -5)
1262 PrintAndLog("DEBUG: Error - Size not correct: %d", size);
1263 else
1264 PrintAndLog("DEBUG: Error %d",idx);
1265 }
1266 return 0;
1267 }
1268
1269 // Index map
1270 // 0 10 20 30 40 50 60
1271 // | | | | | | |
1272 // 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
1273 // -----------------------------------------------------------------------------
1274 // 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
1275 // 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
1276 // |---26 bit---| |-----117----||-------------142-------------|
1277 // b = format bit len, o = odd parity of last 3 bits
1278 // f = facility code, c = card number
1279 // w = wiegand parity
1280 // (26 bit format shown)
1281
1282 //get raw ID before removing parities
1283 uint32_t rawLo = bytebits_to_byte(BitStream+idx+64,32);
1284 uint32_t rawHi = bytebits_to_byte(BitStream+idx+32,32);
1285 uint32_t rawHi2 = bytebits_to_byte(BitStream+idx,32);
1286 setDemodBuf(BitStream,96,idx);
1287
1288 size = removeParity(BitStream, idx+8, 4, 1, 88);
1289 if (size != 66){
1290 if (g_debugMode==1) PrintAndLog("DEBUG: Error - at parity check-tag size does not match AWID format");
1291 return 0;
1292 }
1293 // ok valid card found!
1294
1295 // Index map
1296 // 0 10 20 30 40 50 60
1297 // | | | | | | |
1298 // 01234567 8 90123456 7890123456789012 3 456789012345678901234567890123456
1299 // -----------------------------------------------------------------------------
1300 // 00011010 1 01110101 0000000010001110 1 000000000000000000000000000000000
1301 // bbbbbbbb w ffffffff cccccccccccccccc w xxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxx
1302 // |26 bit| |-117--| |-----142------|
1303 // b = format bit len, o = odd parity of last 3 bits
1304 // f = facility code, c = card number
1305 // w = wiegand parity
1306 // (26 bit format shown)
1307
1308 uint32_t fc = 0;
1309 uint32_t cardnum = 0;
1310 uint32_t code1 = 0;
1311 uint32_t code2 = 0;
1312 uint8_t fmtLen = bytebits_to_byte(BitStream,8);
1313 if (fmtLen==26){
1314 fc = bytebits_to_byte(BitStream+9, 8);
1315 cardnum = bytebits_to_byte(BitStream+17, 16);
1316 code1 = bytebits_to_byte(BitStream+8,fmtLen);
1317 PrintAndLog("AWID Found - BitLength: %d, FC: %d, Card: %d - Wiegand: %x, Raw: %08x%08x%08x", fmtLen, fc, cardnum, code1, rawHi2, rawHi, rawLo);
1318 } else {
1319 cardnum = bytebits_to_byte(BitStream+8+(fmtLen-17), 16);
1320 if (fmtLen>32){
1321 code1 = bytebits_to_byte(BitStream+8,fmtLen-32);
1322 code2 = bytebits_to_byte(BitStream+8+(fmtLen-32),32);
1323 PrintAndLog("AWID Found - BitLength: %d -unknown BitLength- (%d) - Wiegand: %x%08x, Raw: %08x%08x%08x", fmtLen, cardnum, code1, code2, rawHi2, rawHi, rawLo);
1324 } else{
1325 code1 = bytebits_to_byte(BitStream+8,fmtLen);
1326 PrintAndLog("AWID Found - BitLength: %d -unknown BitLength- (%d) - Wiegand: %x, Raw: %08x%08x%08x", fmtLen, cardnum, code1, rawHi2, rawHi, rawLo);
1327 }
1328 }
1329 if (g_debugMode){
1330 PrintAndLog("DEBUG: idx: %d, Len: %d Printing Demod Buffer:", idx, 96);
1331 printDemodBuff();
1332 }
1333 //todo - convert hi2, hi, lo to demodbuffer for future sim/clone commands
1334 return 1;
1335 }
1336
1337 //by marshmellow
1338 //Pyramid Prox demod - FSK RF/50 with preamble of 0000000000000001 (always a 128 bit data stream)
1339 //print full Farpointe Data/Pyramid Prox ID and some bit format details if found
1340 int CmdFSKdemodPyramid(const char *Cmd)
1341 {
1342 //raw fsk demod no manchester decoding no start bit finding just get binary from wave
1343 uint8_t BitStream[MAX_GRAPH_TRACE_LEN]={0};
1344 size_t size = getFromGraphBuf(BitStream);
1345 if (size==0) return 0;
1346
1347 //get binary from fsk wave
1348 int idx = PyramiddemodFSK(BitStream, &size);
1349 if (idx < 0){
1350 if (g_debugMode==1){
1351 if (idx == -5)
1352 PrintAndLog("DEBUG: Error - not enough samples");
1353 else if (idx == -1)
1354 PrintAndLog("DEBUG: Error - only noise found");
1355 else if (idx == -2)
1356 PrintAndLog("DEBUG: Error - problem during FSK demod");
1357 else if (idx == -3)
1358 PrintAndLog("DEBUG: Error - Size not correct: %d", size);
1359 else if (idx == -4)
1360 PrintAndLog("DEBUG: Error - Pyramid preamble not found");
1361 else
1362 PrintAndLog("DEBUG: Error - idx: %d",idx);
1363 }
1364 return 0;
1365 }
1366 // Index map
1367 // 0 10 20 30 40 50 60
1368 // | | | | | | |
1369 // 0123456 7 8901234 5 6789012 3 4567890 1 2345678 9 0123456 7 8901234 5 6789012 3
1370 // -----------------------------------------------------------------------------
1371 // 0000000 0 0000000 1 0000000 1 0000000 1 0000000 1 0000000 1 0000000 1 0000000 1
1372 // premable xxxxxxx o xxxxxxx o xxxxxxx o xxxxxxx o xxxxxxx o xxxxxxx o xxxxxxx o
1373
1374 // 64 70 80 90 100 110 120
1375 // | | | | | | |
1376 // 4567890 1 2345678 9 0123456 7 8901234 5 6789012 3 4567890 1 2345678 9 0123456 7
1377 // -----------------------------------------------------------------------------
1378 // 0000000 1 0000000 1 0000000 1 0110111 0 0011000 1 0000001 0 0001100 1 1001010 0
1379 // xxxxxxx o xxxxxxx o xxxxxxx o xswffff o ffffccc o ccccccc o ccccccw o ppppppp o
1380 // |---115---||---------71---------|
1381 // s = format start bit, o = odd parity of last 7 bits
1382 // f = facility code, c = card number
1383 // w = wiegand parity, x = extra space for other formats
1384 // p = unknown checksum
1385 // (26 bit format shown)
1386
1387 //get bytes for checksum calc
1388 uint8_t checksum = bytebits_to_byte(BitStream + idx + 120, 8);
1389 uint8_t csBuff[14] = {0x00};
1390 for (uint8_t i = 0; i < 13; i++){
1391 csBuff[i] = bytebits_to_byte(BitStream + idx + 16 + (i*8), 8);
1392 }
1393 //check checksum calc
1394 //checksum calc thanks to ICEMAN!!
1395 uint32_t checkCS = CRC8Maxim(csBuff,13);
1396
1397 //get raw ID before removing parities
1398 uint32_t rawLo = bytebits_to_byte(BitStream+idx+96,32);
1399 uint32_t rawHi = bytebits_to_byte(BitStream+idx+64,32);
1400 uint32_t rawHi2 = bytebits_to_byte(BitStream+idx+32,32);
1401 uint32_t rawHi3 = bytebits_to_byte(BitStream+idx,32);
1402 setDemodBuf(BitStream,128,idx);
1403
1404 size = removeParity(BitStream, idx+8, 8, 1, 120);
1405 if (size != 105){
1406 if (g_debugMode==1)
1407 PrintAndLog("DEBUG: Error at parity check - tag size does not match Pyramid format, SIZE: %d, IDX: %d, hi3: %x",size, idx, rawHi3);
1408 return 0;
1409 }
1410
1411 // ok valid card found!
1412
1413 // Index map
1414 // 0 10 20 30 40 50 60 70
1415 // | | | | | | | |
1416 // 01234567890123456789012345678901234567890123456789012345678901234567890
1417 // -----------------------------------------------------------------------
1418 // 00000000000000000000000000000000000000000000000000000000000000000000000
1419 // xxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxx
1420
1421 // 71 80 90 100
1422 // | | | |
1423 // 1 2 34567890 1234567890123456 7 8901234
1424 // ---------------------------------------
1425 // 1 1 01110011 0000000001000110 0 1001010
1426 // s w ffffffff cccccccccccccccc w ppppppp
1427 // |--115-| |------71------|
1428 // s = format start bit, o = odd parity of last 7 bits
1429 // f = facility code, c = card number
1430 // w = wiegand parity, x = extra space for other formats
1431 // p = unknown checksum
1432 // (26 bit format shown)
1433
1434 //find start bit to get fmtLen
1435 int j;
1436 for (j=0; j<size; j++){
1437 if(BitStream[j]) break;
1438 }
1439 uint8_t fmtLen = size-j-8;
1440 uint32_t fc = 0;
1441 uint32_t cardnum = 0;
1442 uint32_t code1 = 0;
1443 //uint32_t code2 = 0;
1444 if (fmtLen==26){
1445 fc = bytebits_to_byte(BitStream+73, 8);
1446 cardnum = bytebits_to_byte(BitStream+81, 16);
1447 code1 = bytebits_to_byte(BitStream+72,fmtLen);
1448 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);
1449 } else if (fmtLen==45){
1450 fmtLen=42; //end = 10 bits not 7 like 26 bit fmt
1451 fc = bytebits_to_byte(BitStream+53, 10);
1452 cardnum = bytebits_to_byte(BitStream+63, 32);
1453 PrintAndLog("Pyramid ID Found - BitLength: %d, FC: %d, Card: %d - Raw: %08x%08x%08x%08x", fmtLen, fc, cardnum, rawHi3, rawHi2, rawHi, rawLo);
1454 } else {
1455 cardnum = bytebits_to_byte(BitStream+81, 16);
1456 if (fmtLen>32){
1457 //code1 = bytebits_to_byte(BitStream+(size-fmtLen),fmtLen-32);
1458 //code2 = bytebits_to_byte(BitStream+(size-32),32);
1459 PrintAndLog("Pyramid ID Found - BitLength: %d -unknown BitLength- (%d), Raw: %08x%08x%08x%08x", fmtLen, cardnum, rawHi3, rawHi2, rawHi, rawLo);
1460 } else{
1461 //code1 = bytebits_to_byte(BitStream+(size-fmtLen),fmtLen);
1462 PrintAndLog("Pyramid ID Found - BitLength: %d -unknown BitLength- (%d), Raw: %08x%08x%08x%08x", fmtLen, cardnum, rawHi3, rawHi2, rawHi, rawLo);
1463 }
1464 }
1465 if (checksum == checkCS)
1466 PrintAndLog("Checksum %02x passed", checksum);
1467 else
1468 PrintAndLog("Checksum %02x failed - should have been %02x", checksum, checkCS);
1469
1470 if (g_debugMode){
1471 PrintAndLog("DEBUG: idx: %d, Len: %d, Printing Demod Buffer:", idx, 128);
1472 printDemodBuff();
1473 }
1474 return 1;
1475 }
1476
1477 //by marshmellow
1478 //attempt to psk1 demod graph buffer
1479 int PSKDemod(const char *Cmd, bool verbose)
1480 {
1481 int invert=0;
1482 int clk=0;
1483 int maxErr=100;
1484 sscanf(Cmd, "%i %i %i", &clk, &invert, &maxErr);
1485 if (clk==1){
1486 invert=1;
1487 clk=0;
1488 }
1489 if (invert != 0 && invert != 1) {
1490 if (verbose) PrintAndLog("Invalid argument: %s", Cmd);
1491 return 0;
1492 }
1493 uint8_t BitStream[MAX_GRAPH_TRACE_LEN]={0};
1494 size_t BitLen = getFromGraphBuf(BitStream);
1495 if (BitLen==0) return -1;
1496 uint8_t carrier=countFC(BitStream, BitLen, 0);
1497 if (carrier!=2 && carrier!=4 && carrier!=8){
1498 //invalid carrier
1499 return 0;
1500 }
1501 int errCnt=0;
1502 errCnt = pskRawDemod(BitStream, &BitLen, &clk, &invert);
1503 if (errCnt > maxErr){
1504 if (g_debugMode || verbose) PrintAndLog("Too many errors found, clk: %d, invert: %d, numbits: %d, errCnt: %d",clk,invert,BitLen,errCnt);
1505 return 0;
1506 }
1507 if (errCnt<0|| BitLen<16){ //throw away static - allow 1 and -1 (in case of threshold command first)
1508 if (g_debugMode || verbose) PrintAndLog("no data found, clk: %d, invert: %d, numbits: %d, errCnt: %d",clk,invert,BitLen,errCnt);
1509 return 0;
1510 }
1511 if (verbose || g_debugMode){
1512 PrintAndLog("\nUsing Clock:%d, invert:%d, Bits Found:%d",clk,invert,BitLen);
1513 if (errCnt>0){
1514 PrintAndLog("# Errors during Demoding (shown as 7 in bit stream): %d",errCnt);
1515 }
1516 }
1517 //prime demod buffer for output
1518 setDemodBuf(BitStream,BitLen,0);
1519 return 1;
1520 }
1521
1522 // Indala 26 bit decode
1523 // by marshmellow
1524 // optional arguments - same as CmdpskNRZrawDemod (clock & invert)
1525 int CmdIndalaDecode(const char *Cmd)
1526 {
1527 int ans;
1528 if (strlen(Cmd)>0){
1529 ans = PSKDemod(Cmd, 0);
1530 } else{ //default to RF/32
1531 ans = PSKDemod("32", 0);
1532 }
1533
1534 if (!ans){
1535 if (g_debugMode==1)
1536 PrintAndLog("Error1: %d",ans);
1537 return 0;
1538 }
1539 uint8_t invert=0;
1540 ans = indala26decode(DemodBuffer,(size_t *) &DemodBufferLen, &invert);
1541 if (ans < 1) {
1542 if (g_debugMode==1)
1543 PrintAndLog("Error2: %d",ans);
1544 return -1;
1545 }
1546 char showbits[251]={0x00};
1547 if (invert)
1548 if (g_debugMode==1)
1549 PrintAndLog("Had to invert bits");
1550
1551 //convert UID to HEX
1552 uint32_t uid1, uid2, uid3, uid4, uid5, uid6, uid7;
1553 int idx;
1554 uid1=0;
1555 uid2=0;
1556 PrintAndLog("BitLen: %d",DemodBufferLen);
1557 if (DemodBufferLen==64){
1558 for( idx=0; idx<64; idx++) {
1559 uid1=(uid1<<1)|(uid2>>31);
1560 if (DemodBuffer[idx] == 0) {
1561 uid2=(uid2<<1)|0;
1562 showbits[idx]='0';
1563 } else {
1564 uid2=(uid2<<1)|1;
1565 showbits[idx]='1';
1566 }
1567 }
1568 showbits[idx]='\0';
1569 PrintAndLog("Indala UID=%s (%x%08x)", showbits, uid1, uid2);
1570 }
1571 else {
1572 uid3=0;
1573 uid4=0;
1574 uid5=0;
1575 uid6=0;
1576 uid7=0;
1577 for( idx=0; idx<DemodBufferLen; idx++) {
1578 uid1=(uid1<<1)|(uid2>>31);
1579 uid2=(uid2<<1)|(uid3>>31);
1580 uid3=(uid3<<1)|(uid4>>31);
1581 uid4=(uid4<<1)|(uid5>>31);
1582 uid5=(uid5<<1)|(uid6>>31);
1583 uid6=(uid6<<1)|(uid7>>31);
1584 if (DemodBuffer[idx] == 0) {
1585 uid7=(uid7<<1)|0;
1586 showbits[idx]='0';
1587 }
1588 else {
1589 uid7=(uid7<<1)|1;
1590 showbits[idx]='1';
1591 }
1592 }
1593 showbits[idx]='\0';
1594 PrintAndLog("Indala UID=%s (%x%08x%08x%08x%08x%08x%08x)", showbits, uid1, uid2, uid3, uid4, uid5, uid6, uid7);
1595 }
1596 if (g_debugMode){
1597 PrintAndLog("DEBUG: printing demodbuffer:");
1598 printDemodBuff();
1599 }
1600 return 1;
1601 }
1602
1603 // by marshmellow
1604 // takes 3 arguments - clock, invert, maxErr as integers
1605 // attempts to demodulate nrz only
1606 // prints binary found and saves in demodbuffer for further commands
1607
1608 int NRZrawDemod(const char *Cmd, bool verbose)
1609 {
1610 int invert=0;
1611 int clk=0;
1612 int maxErr=100;
1613 sscanf(Cmd, "%i %i %i", &clk, &invert, &maxErr);
1614 if (clk==1){
1615 invert=1;
1616 clk=0;
1617 }
1618 if (invert != 0 && invert != 1) {
1619 PrintAndLog("Invalid argument: %s", Cmd);
1620 return 0;
1621 }
1622 uint8_t BitStream[MAX_GRAPH_TRACE_LEN]={0};
1623 size_t BitLen = getFromGraphBuf(BitStream);
1624 if (BitLen==0) return 0;
1625 int errCnt=0;
1626 errCnt = nrzRawDemod(BitStream, &BitLen, &clk, &invert, maxErr);
1627 if (errCnt > maxErr){
1628 if (g_debugMode) PrintAndLog("Too many errors found, clk: %d, invert: %d, numbits: %d, errCnt: %d",clk,invert,BitLen,errCnt);
1629 return 0;
1630 }
1631 if (errCnt<0 || BitLen<16){ //throw away static - allow 1 and -1 (in case of threshold command first)
1632 if (g_debugMode) PrintAndLog("no data found, clk: %d, invert: %d, numbits: %d, errCnt: %d",clk,invert,BitLen,errCnt);
1633 return 0;
1634 }
1635 if (verbose || g_debugMode) PrintAndLog("Tried NRZ Demod using Clock: %d - invert: %d - Bits Found: %d",clk,invert,BitLen);
1636 //prime demod buffer for output
1637 setDemodBuf(BitStream,BitLen,0);
1638
1639 if (errCnt>0 && (verbose || g_debugMode)) PrintAndLog("# Errors during Demoding (shown as 7 in bit stream): %d",errCnt);
1640 if (verbose || g_debugMode) {
1641 PrintAndLog("NRZ demoded bitstream:");
1642 // Now output the bitstream to the scrollback by line of 16 bits
1643 printDemodBuff();
1644 }
1645 return 1;
1646 }
1647
1648 int CmdNRZrawDemod(const char *Cmd)
1649 {
1650 char cmdp = param_getchar(Cmd, 0);
1651 if (strlen(Cmd) > 10 || cmdp == 'h' || cmdp == 'H') {
1652 PrintAndLog("Usage: data rawdemod nr [clock] <0|1> [maxError]");
1653 PrintAndLog(" [set clock as integer] optional, if not set, autodetect.");
1654 PrintAndLog(" <invert>, 1 for invert output");
1655 PrintAndLog(" [set maximum allowed errors], default = 100.");
1656 PrintAndLog("");
1657 PrintAndLog(" sample: data rawdemod nr = demod a nrz/direct tag from GraphBuffer");
1658 PrintAndLog(" : data rawdemod nr 32 = demod a nrz/direct tag from GraphBuffer using a clock of RF/32");
1659 PrintAndLog(" : data rawdemod nr 32 1 = demod a nrz/direct tag from GraphBuffer using a clock of RF/32 and inverting data");
1660 PrintAndLog(" : data rawdemod nr 1 = demod a nrz/direct tag from GraphBuffer while inverting data");
1661 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");
1662 return 0;
1663 }
1664 return NRZrawDemod(Cmd, TRUE);
1665 }
1666
1667 // by marshmellow
1668 // takes 3 arguments - clock, invert, maxErr as integers
1669 // attempts to demodulate psk only
1670 // prints binary found and saves in demodbuffer for further commands
1671 int CmdPSK1rawDemod(const char *Cmd)
1672 {
1673 int ans;
1674 char cmdp = param_getchar(Cmd, 0);
1675 if (strlen(Cmd) > 10 || cmdp == 'h' || cmdp == 'H') {
1676 PrintAndLog("Usage: data rawdemod p1 [clock] <0|1> [maxError]");
1677 PrintAndLog(" [set clock as integer] optional, if not set, autodetect.");
1678 PrintAndLog(" <invert>, 1 for invert output");
1679 PrintAndLog(" [set maximum allowed errors], default = 100.");
1680 PrintAndLog("");
1681 PrintAndLog(" sample: data rawdemod p1 = demod a psk1 tag from GraphBuffer");
1682 PrintAndLog(" : data rawdemod p1 32 = demod a psk1 tag from GraphBuffer using a clock of RF/32");
1683 PrintAndLog(" : data rawdemod p1 32 1 = demod a psk1 tag from GraphBuffer using a clock of RF/32 and inverting data");
1684 PrintAndLog(" : data rawdemod p1 1 = demod a psk1 tag from GraphBuffer while inverting data");
1685 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");
1686 return 0;
1687 }
1688 ans = PSKDemod(Cmd, TRUE);
1689 //output
1690 if (!ans){
1691 if (g_debugMode) PrintAndLog("Error demoding: %d",ans);
1692 return 0;
1693 }
1694
1695 PrintAndLog("PSK1 demoded bitstream:");
1696 // Now output the bitstream to the scrollback by line of 16 bits
1697 printDemodBuff();
1698 return 1;
1699 }
1700
1701 // by marshmellow
1702 // takes same args as cmdpsk1rawdemod
1703 int CmdPSK2rawDemod(const char *Cmd)
1704 {
1705 int ans=0;
1706 char cmdp = param_getchar(Cmd, 0);
1707 if (strlen(Cmd) > 10 || cmdp == 'h' || cmdp == 'H') {
1708 PrintAndLog("Usage: data rawdemod p2 [clock] <0|1> [maxError]");
1709 PrintAndLog(" [set clock as integer] optional, if not set, autodetect.");
1710 PrintAndLog(" <invert>, 1 for invert output");
1711 PrintAndLog(" [set maximum allowed errors], default = 100.");
1712 PrintAndLog("");
1713 PrintAndLog(" sample: data rawdemod p2 = demod a psk2 tag from GraphBuffer, autodetect clock");
1714 PrintAndLog(" : data rawdemod p2 32 = demod a psk2 tag from GraphBuffer using a clock of RF/32");
1715 PrintAndLog(" : data rawdemod p2 32 1 = demod a psk2 tag from GraphBuffer using a clock of RF/32 and inverting output");
1716 PrintAndLog(" : data rawdemod p2 1 = demod a psk2 tag from GraphBuffer, autodetect clock and invert output");
1717 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");
1718 return 0;
1719 }
1720 ans=PSKDemod(Cmd, TRUE);
1721 if (!ans){
1722 if (g_debugMode) PrintAndLog("Error demoding: %d",ans);
1723 return 0;
1724 }
1725 psk1TOpsk2(DemodBuffer, DemodBufferLen);
1726 PrintAndLog("PSK2 demoded bitstream:");
1727 // Now output the bitstream to the scrollback by line of 16 bits
1728 printDemodBuff();
1729 return 1;
1730 }
1731
1732 // by marshmellow - combines all raw demod functions into one menu command
1733 int CmdRawDemod(const char *Cmd)
1734 {
1735 char cmdp = Cmd[0]; //param_getchar(Cmd, 0);
1736
1737 if (strlen(Cmd) > 20 || cmdp == 'h' || cmdp == 'H' || strlen(Cmd)<2) {
1738 PrintAndLog("Usage: data rawdemod [modulation] <help>|<options>");
1739 PrintAndLog(" [modulation] as 2 char, 'ab' for ask/biphase, 'am' for ask/manchester, 'ar' for ask/raw, 'fs' for fsk, ...");
1740 PrintAndLog(" 'nr' for nrz/direct, 'p1' for psk1, 'p2' for psk2");
1741 PrintAndLog(" <help> as 'h', prints the help for the specific modulation");
1742 PrintAndLog(" <options> see specific modulation help for optional parameters");
1743 PrintAndLog("");
1744 PrintAndLog(" sample: data rawdemod fs h = print help specific to fsk demod");
1745 PrintAndLog(" : data rawdemod fs = demod GraphBuffer using: fsk - autodetect");
1746 PrintAndLog(" : data rawdemod ab = demod GraphBuffer using: ask/biphase - autodetect");
1747 PrintAndLog(" : data rawdemod am = demod GraphBuffer using: ask/manchester - autodetect");
1748 PrintAndLog(" : data rawdemod ar = demod GraphBuffer using: ask/raw - autodetect");
1749 PrintAndLog(" : data rawdemod nr = demod GraphBuffer using: nrz/direct - autodetect");
1750 PrintAndLog(" : data rawdemod p1 = demod GraphBuffer using: psk1 - autodetect");
1751 PrintAndLog(" : data rawdemod p2 = demod GraphBuffer using: psk2 - autodetect");
1752 return 0;
1753 }
1754 char cmdp2 = Cmd[1];
1755 int ans = 0;
1756 if (cmdp == 'f' && cmdp2 == 's'){
1757 ans = CmdFSKrawdemod(Cmd+2);
1758 } else if(cmdp == 'a' && cmdp2 == 'b'){
1759 ans = Cmdaskbiphdemod(Cmd+2);
1760 } else if(cmdp == 'a' && cmdp2 == 'm'){
1761 ans = Cmdaskmandemod(Cmd+2);
1762 } else if(cmdp == 'a' && cmdp2 == 'r'){
1763 ans = Cmdaskrawdemod(Cmd+2);
1764 } else if(cmdp == 'n' && cmdp2 == 'r'){
1765 ans = CmdNRZrawDemod(Cmd+2);
1766 } else if(cmdp == 'p' && cmdp2 == '1'){
1767 ans = CmdPSK1rawDemod(Cmd+2);
1768 } else if(cmdp == 'p' && cmdp2 == '2'){
1769 ans = CmdPSK2rawDemod(Cmd+2);
1770 } else {
1771 PrintAndLog("unknown modulation entered - see help ('h') for parameter structure");
1772 }
1773 return ans;
1774 }
1775
1776 int CmdGrid(const char *Cmd)
1777 {
1778 sscanf(Cmd, "%i %i", &PlotGridX, &PlotGridY);
1779 PlotGridXdefault= PlotGridX;
1780 PlotGridYdefault= PlotGridY;
1781 RepaintGraphWindow();
1782 return 0;
1783 }
1784
1785 int CmdHexsamples(const char *Cmd)
1786 {
1787 int i, j;
1788 int requested = 0;
1789 int offset = 0;
1790 char string_buf[25];
1791 char* string_ptr = string_buf;
1792 uint8_t got[BIGBUF_SIZE];
1793
1794 sscanf(Cmd, "%i %i", &requested, &offset);
1795
1796 /* if no args send something */
1797 if (requested == 0) {
1798 requested = 8;
1799 }
1800 if (offset + requested > sizeof(got)) {
1801 PrintAndLog("Tried to read past end of buffer, <bytes> + <offset> > %d", BIGBUF_SIZE);
1802 return 0;
1803 }
1804
1805 GetFromBigBuf(got,requested,offset);
1806 WaitForResponse(CMD_ACK,NULL);
1807
1808 i = 0;
1809 for (j = 0; j < requested; j++) {
1810 i++;
1811 string_ptr += sprintf(string_ptr, "%02x ", got[j]);
1812 if (i == 8) {
1813 *(string_ptr - 1) = '\0'; // remove the trailing space
1814 PrintAndLog("%s", string_buf);
1815 string_buf[0] = '\0';
1816 string_ptr = string_buf;
1817 i = 0;
1818 }
1819 if (j == requested - 1 && string_buf[0] != '\0') { // print any remaining bytes
1820 *(string_ptr - 1) = '\0';
1821 PrintAndLog("%s", string_buf);
1822 string_buf[0] = '\0';
1823 }
1824 }
1825 return 0;
1826 }
1827
1828 int CmdHide(const char *Cmd)
1829 {
1830 HideGraphWindow();
1831 return 0;
1832 }
1833
1834 //zero mean GraphBuffer
1835 int CmdHpf(const char *Cmd)
1836 {
1837 int i;
1838 int accum = 0;
1839
1840 for (i = 10; i < GraphTraceLen; ++i)
1841 accum += GraphBuffer[i];
1842 accum /= (GraphTraceLen - 10);
1843 for (i = 0; i < GraphTraceLen; ++i)
1844 GraphBuffer[i] -= accum;
1845
1846 RepaintGraphWindow();
1847 return 0;
1848 }
1849 typedef struct {
1850 uint8_t * buffer;
1851 uint32_t numbits;
1852 uint32_t position;
1853 }BitstreamOut;
1854
1855 bool _headBit( BitstreamOut *stream)
1856 {
1857 int bytepos = stream->position >> 3; // divide by 8
1858 int bitpos = (stream->position++) & 7; // mask out 00000111
1859 return (*(stream->buffer + bytepos) >> (7-bitpos)) & 1;
1860 }
1861
1862 uint8_t getByte(uint8_t bits_per_sample, BitstreamOut* b)
1863 {
1864 int i;
1865 uint8_t val = 0;
1866 for(i =0 ; i < bits_per_sample; i++)
1867 {
1868 val |= (_headBit(b) << (7-i));
1869 }
1870 return val;
1871 }
1872
1873 int getSamples(const char *Cmd, bool silent)
1874 {
1875 //If we get all but the last byte in bigbuf,
1876 // we don't have to worry about remaining trash
1877 // in the last byte in case the bits-per-sample
1878 // does not line up on byte boundaries
1879
1880 uint8_t got[BIGBUF_SIZE-1] = { 0 };
1881
1882 int n = strtol(Cmd, NULL, 0);
1883
1884 if (n == 0)
1885 n = sizeof(got);
1886
1887 if (n > sizeof(got))
1888 n = sizeof(got);
1889
1890 PrintAndLog("Reading %d bytes from device memory\n", n);
1891 GetFromBigBuf(got,n,0);
1892 PrintAndLog("Data fetched");
1893 UsbCommand response;
1894 WaitForResponse(CMD_ACK, &response);
1895 uint8_t bits_per_sample = 8;
1896
1897 //Old devices without this feature would send 0 at arg[0]
1898 if(response.arg[0] > 0)
1899 {
1900 sample_config *sc = (sample_config *) response.d.asBytes;
1901 PrintAndLog("Samples @ %d bits/smpl, decimation 1:%d ", sc->bits_per_sample
1902 , sc->decimation);
1903 bits_per_sample = sc->bits_per_sample;
1904 }
1905 if(bits_per_sample < 8)
1906 {
1907 PrintAndLog("Unpacking...");
1908 BitstreamOut bout = { got, bits_per_sample * n, 0};
1909 int j =0;
1910 for (j = 0; j * bits_per_sample < n * 8 && j < sizeof(GraphBuffer); j++) {
1911 uint8_t sample = getByte(bits_per_sample, &bout);
1912 GraphBuffer[j] = ((int) sample )- 128;
1913 }
1914 GraphTraceLen = j;
1915 PrintAndLog("Unpacked %d samples" , j );
1916 }else
1917 {
1918 for (int j = 0; j < n; j++) {
1919 GraphBuffer[j] = ((int)got[j]) - 128;
1920 }
1921 GraphTraceLen = n;
1922 }
1923
1924 RepaintGraphWindow();
1925 return 0;
1926 }
1927
1928 int CmdSamples(const char *Cmd)
1929 {
1930 return getSamples(Cmd, false);
1931 }
1932
1933 int CmdTuneSamples(const char *Cmd)
1934 {
1935 int timeout = 0;
1936 printf("\nMeasuring antenna characteristics, please wait...");
1937
1938 UsbCommand c = {CMD_MEASURE_ANTENNA_TUNING};
1939 SendCommand(&c);
1940
1941 UsbCommand resp;
1942 while(!WaitForResponseTimeout(CMD_MEASURED_ANTENNA_TUNING,&resp,1000)) {
1943 timeout++;
1944 printf(".");
1945 if (timeout > 7) {
1946 PrintAndLog("\nNo response from Proxmark. Aborting...");
1947 return 1;
1948 }
1949 }
1950
1951 int peakv, peakf;
1952 int vLf125, vLf134, vHf;
1953 vLf125 = resp.arg[0] & 0xffff;
1954 vLf134 = resp.arg[0] >> 16;
1955 vHf = resp.arg[1] & 0xffff;;
1956 peakf = resp.arg[2] & 0xffff;
1957 peakv = resp.arg[2] >> 16;
1958 PrintAndLog("");
1959 PrintAndLog("# LF antenna: %5.2f V @ 125.00 kHz", vLf125/1000.0);
1960 PrintAndLog("# LF antenna: %5.2f V @ 134.00 kHz", vLf134/1000.0);
1961 PrintAndLog("# LF optimal: %5.2f V @%9.2f kHz", peakv/1000.0, 12000.0/(peakf+1));
1962 PrintAndLog("# HF antenna: %5.2f V @ 13.56 MHz", vHf/1000.0);
1963
1964 #define LF_UNUSABLE_V 2948 // was 2000. Changed due to bugfix in voltage measurements. LF results are now 47% higher.
1965 #define LF_MARGINAL_V 14739 // was 10000. Changed due to bugfix bug in voltage measurements. LF results are now 47% higher.
1966 #define HF_UNUSABLE_V 3167 // was 2000. Changed due to bugfix in voltage measurements. HF results are now 58% higher.
1967 #define HF_MARGINAL_V 7917 // was 5000. Changed due to bugfix in voltage measurements. HF results are now 58% higher.
1968
1969 if (peakv < LF_UNUSABLE_V)
1970 PrintAndLog("# Your LF antenna is unusable.");
1971 else if (peakv < LF_MARGINAL_V)
1972 PrintAndLog("# Your LF antenna is marginal.");
1973 if (vHf < HF_UNUSABLE_V)
1974 PrintAndLog("# Your HF antenna is unusable.");
1975 else if (vHf < HF_MARGINAL_V)
1976 PrintAndLog("# Your HF antenna is marginal.");
1977
1978 if (peakv >= LF_UNUSABLE_V) {
1979 for (int i = 0; i < 256; i++) {
1980 GraphBuffer[i] = resp.d.asBytes[i] - 128;
1981 }
1982 PrintAndLog("Displaying LF tuning graph. Divisor 89 is 134khz, 95 is 125khz.\n");
1983 PrintAndLog("\n");
1984 GraphTraceLen = 256;
1985 ShowGraphWindow();
1986 RepaintGraphWindow();
1987 }
1988
1989 return 0;
1990 }
1991
1992
1993 int CmdLoad(const char *Cmd)
1994 {
1995 char filename[FILE_PATH_SIZE] = {0x00};
1996 int len = 0;
1997
1998 len = strlen(Cmd);
1999 if (len > FILE_PATH_SIZE) len = FILE_PATH_SIZE;
2000 memcpy(filename, Cmd, len);
2001
2002 FILE *f = fopen(filename, "r");
2003 if (!f) {
2004 PrintAndLog("couldn't open '%s'", filename);
2005 return 0;
2006 }
2007
2008 GraphTraceLen = 0;
2009 char line[80];
2010 while (fgets(line, sizeof (line), f)) {
2011 GraphBuffer[GraphTraceLen] = atoi(line);
2012 GraphTraceLen++;
2013 }
2014 fclose(f);
2015 PrintAndLog("loaded %d samples", GraphTraceLen);
2016 RepaintGraphWindow();
2017 return 0;
2018 }
2019
2020 int CmdLtrim(const char *Cmd)
2021 {
2022 int ds = atoi(Cmd);
2023
2024 for (int i = ds; i < GraphTraceLen; ++i)
2025 GraphBuffer[i-ds] = GraphBuffer[i];
2026 GraphTraceLen -= ds;
2027
2028 RepaintGraphWindow();
2029 return 0;
2030 }
2031
2032 // trim graph to input argument length
2033 int CmdRtrim(const char *Cmd)
2034 {
2035 int ds = atoi(Cmd);
2036
2037 GraphTraceLen = ds;
2038
2039 RepaintGraphWindow();
2040 return 0;
2041 }
2042
2043 int CmdNorm(const char *Cmd)
2044 {
2045 int i;
2046 int max = INT_MIN, min = INT_MAX;
2047
2048 for (i = 10; i < GraphTraceLen; ++i) {
2049 if (GraphBuffer[i] > max)
2050 max = GraphBuffer[i];
2051 if (GraphBuffer[i] < min)
2052 min = GraphBuffer[i];
2053 }
2054
2055 if (max != min) {
2056 for (i = 0; i < GraphTraceLen; ++i) {
2057 GraphBuffer[i] = (GraphBuffer[i] - ((max + min) / 2)) * 256 /
2058 (max - min);
2059 //marshmelow: adjusted *1000 to *256 to make +/- 128 so demod commands still work
2060 }
2061 }
2062 RepaintGraphWindow();
2063 return 0;
2064 }
2065
2066 int CmdPlot(const char *Cmd)
2067 {
2068 ShowGraphWindow();
2069 return 0;
2070 }
2071
2072 int CmdSave(const char *Cmd)
2073 {
2074 char filename[FILE_PATH_SIZE] = {0x00};
2075 int len = 0;
2076
2077 len = strlen(Cmd);
2078 if (len > FILE_PATH_SIZE) len = FILE_PATH_SIZE;
2079 memcpy(filename, Cmd, len);
2080
2081
2082 FILE *f = fopen(filename, "w");
2083 if(!f) {
2084 PrintAndLog("couldn't open '%s'", filename);
2085 return 0;
2086 }
2087 int i;
2088 for (i = 0; i < GraphTraceLen; i++) {
2089 fprintf(f, "%d\n", GraphBuffer[i]);
2090 }
2091 fclose(f);
2092 PrintAndLog("saved to '%s'", Cmd);
2093 return 0;
2094 }
2095
2096 int CmdScale(const char *Cmd)
2097 {
2098 CursorScaleFactor = atoi(Cmd);
2099 if (CursorScaleFactor == 0) {
2100 PrintAndLog("bad, can't have zero scale");
2101 CursorScaleFactor = 1;
2102 }
2103 RepaintGraphWindow();
2104 return 0;
2105 }
2106
2107 int CmdDirectionalThreshold(const char *Cmd)
2108 {
2109 int8_t upThres = param_get8(Cmd, 0);
2110 int8_t downThres = param_get8(Cmd, 1);
2111
2112 printf("Applying Up Threshold: %d, Down Threshold: %d\n", upThres, downThres);
2113
2114 int lastValue = GraphBuffer[0];
2115 GraphBuffer[0] = 0; // Will be changed at the end, but init 0 as we adjust to last samples value if no threshold kicks in.
2116
2117 for (int i = 1; i < GraphTraceLen; ++i) {
2118 // Apply first threshold to samples heading up
2119 if (GraphBuffer[i] >= upThres && GraphBuffer[i] > lastValue)
2120 {
2121 lastValue = GraphBuffer[i]; // Buffer last value as we overwrite it.
2122 GraphBuffer[i] = 1;
2123 }
2124 // Apply second threshold to samples heading down
2125 else if (GraphBuffer[i] <= downThres && GraphBuffer[i] < lastValue)
2126 {
2127 lastValue = GraphBuffer[i]; // Buffer last value as we overwrite it.
2128 GraphBuffer[i] = -1;
2129 }
2130 else
2131 {
2132 lastValue = GraphBuffer[i]; // Buffer last value as we overwrite it.
2133 GraphBuffer[i] = GraphBuffer[i-1];
2134
2135 }
2136 }
2137 GraphBuffer[0] = GraphBuffer[1]; // Aline with first edited sample.
2138 RepaintGraphWindow();
2139 return 0;
2140 }
2141
2142 int CmdZerocrossings(const char *Cmd)
2143 {
2144 // Zero-crossings aren't meaningful unless the signal is zero-mean.
2145 CmdHpf("");
2146
2147 int sign = 1;
2148 int zc = 0;
2149 int lastZc = 0;
2150
2151 for (int i = 0; i < GraphTraceLen; ++i) {
2152 if (GraphBuffer[i] * sign >= 0) {
2153 // No change in sign, reproduce the previous sample count.
2154 zc++;
2155 GraphBuffer[i] = lastZc;
2156 } else {
2157 // Change in sign, reset the sample count.
2158 sign = -sign;
2159 GraphBuffer[i] = lastZc;
2160 if (sign > 0) {
2161 lastZc = zc;
2162 zc = 0;
2163 }
2164 }
2165 }
2166
2167 RepaintGraphWindow();
2168 return 0;
2169 }
2170
2171 static command_t CommandTable[] =
2172 {
2173 {"help", CmdHelp, 1, "This help"},
2174 {"askedgedetect", CmdAskEdgeDetect, 1, "[threshold] Adjust Graph for manual ask demod using length of sample differences to detect the edge of a wave (default = 25)"},
2175 {"askem410xdemod", CmdAskEM410xDemod, 1, "[clock] [invert<0|1>] [maxErr] -- Demodulate an EM410x tag from GraphBuffer (args optional)"},
2176 {"askgproxiidemod", CmdG_Prox_II_Demod, 1, "Demodulate a G Prox II tag from GraphBuffer"},
2177 {"autocorr", CmdAutoCorr, 1, "[window length] [g] -- Autocorrelation over window - g to save back to GraphBuffer (overwrite)"},
2178 {"biphaserawdecode",CmdBiphaseDecodeRaw,1,"[offset] [invert<0|1>] [maxErr] -- Biphase decode bin stream in DemodBuffer (offset = 0|1 bits to shift the decode start)"},
2179 {"bitsamples", CmdBitsamples, 0, "Get raw samples as bitstring"},
2180 {"buffclear", CmdBuffClear, 1, "Clear sample buffer and graph window"},
2181 {"dec", CmdDec, 1, "Decimate samples"},
2182 {"detectclock", CmdDetectClockRate, 1, "[modulation] Detect clock rate of wave in GraphBuffer (options: 'a','f','n','p' for ask, fsk, nrz, psk respectively)"},
2183 {"fskawiddemod", CmdFSKdemodAWID, 1, "Demodulate an AWID FSK tag from GraphBuffer"},
2184 //{"fskfcdetect", CmdFSKfcDetect, 1, "Try to detect the Field Clock of an FSK wave"},
2185 {"fskhiddemod", CmdFSKdemodHID, 1, "Demodulate a HID FSK tag from GraphBuffer"},
2186 {"fskiodemod", CmdFSKdemodIO, 1, "Demodulate an IO Prox FSK tag from GraphBuffer"},
2187 {"fskpyramiddemod", CmdFSKdemodPyramid, 1, "Demodulate a Pyramid FSK tag from GraphBuffer"},
2188 {"fskparadoxdemod", CmdFSKdemodParadox, 1, "Demodulate a Paradox FSK tag from GraphBuffer"},
2189 {"getbitstream", CmdGetBitStream, 1, "Convert GraphBuffer's >=1 values to 1 and <1 to 0"},
2190 {"grid", CmdGrid, 1, "<x> <y> -- overlay grid on graph window, use zero value to turn off either"},
2191 {"hexsamples", CmdHexsamples, 0, "<bytes> [<offset>] -- Dump big buffer as hex bytes"},
2192 {"hide", CmdHide, 1, "Hide graph window"},
2193 {"hpf", CmdHpf, 1, "Remove DC offset from trace"},
2194 {"load", CmdLoad, 1, "<filename> -- Load trace (to graph window"},
2195 {"ltrim", CmdLtrim, 1, "<samples> -- Trim samples from left of trace"},
2196 {"rtrim", CmdRtrim, 1, "<location to end trace> -- Trim samples from right of trace"},
2197 {"manrawdecode", Cmdmandecoderaw, 1, "[maxErr] -- Manchester decode binary stream in DemodBuffer"},
2198 {"norm", CmdNorm, 1, "Normalize max/min to +/-128"},
2199 {"plot", CmdPlot, 1, "Show graph window (hit 'h' in window for keystroke help)"},
2200 {"printdemodbuffer",CmdPrintDemodBuff, 1, "[x] -- print the data in the DemodBuffer - 'x' for hex output"},
2201 {"pskindalademod", CmdIndalaDecode, 1, "[clock] [invert<0|1>] -- Demodulate an indala tag (PSK1) from GraphBuffer (args optional)"},
2202 {"rawdemod", CmdRawDemod, 1, "[modulation] ... <options> -see help (h option) -- Demodulate the data in the GraphBuffer and output binary"},
2203 {"samples", CmdSamples, 0, "[512 - 40000] -- Get raw samples for graph window (GraphBuffer)"},
2204 {"save", CmdSave, 1, "<filename> -- Save trace (from graph window)"},
2205 {"scale", CmdScale, 1, "<int> -- Set cursor display scale"},
2206 {"setdebugmode", CmdSetDebugMode, 1, "<0|1> -- Turn on or off Debugging Mode for demods"},
2207 {"shiftgraphzero", CmdGraphShiftZero, 1, "<shift> -- Shift 0 for Graphed wave + or - shift value"},
2208 {"dirthreshold", CmdDirectionalThreshold, 1, "<thres up> <thres down> -- Max rising higher up-thres/ Min falling lower down-thres, keep rest as prev."},
2209 {"tune", CmdTuneSamples, 0, "Get hw tune samples for graph window"},
2210 {"undec", CmdUndec, 1, "Un-decimate samples by 2"},
2211 {"zerocrossings", CmdZerocrossings, 1, "Count time between zero-crossings"},
2212 {NULL, NULL, 0, NULL}
2213 };
2214
2215 int CmdData(const char *Cmd)
2216 {
2217 CmdsParse(CommandTable, Cmd);
2218 return 0;
2219 }
2220
2221 int CmdHelp(const char *Cmd)
2222 {
2223 CmdsHelp(CommandTable);
2224 return 0;
2225 }
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