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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 int AskEm410xDecode(bool verbose, uint32_t *hi, uint64_t *lo )
212 {
213 size_t idx = 0;
214 size_t BitLen = DemodBufferLen;
215 uint8_t BitStream[MAX_GRAPH_TRACE_LEN]={0};
216 memcpy(BitStream, DemodBuffer, BitLen);
217 if (Em410xDecode(BitStream, &BitLen, &idx, hi, lo)){
218 //set GraphBuffer for clone or sim command
219 setDemodBuf(BitStream, BitLen, idx);
220 if (g_debugMode){
221 PrintAndLog("DEBUG: idx: %d, Len: %d, Printing Demod Buffer:", idx, BitLen);
222 printDemodBuff();
223 }
224 if (verbose){
225 PrintAndLog("EM410x pattern found: ");
226 printEM410x(*hi, *lo);
227 }
228 return 1;
229 }
230 return 0;
231 }
232
233 int AskEm410xDemod(const char *Cmd, uint32_t *hi, uint64_t *lo, bool verbose)
234 {
235 if (!ASKDemod(Cmd, FALSE, FALSE, 1)) return 0;
236 return AskEm410xDecode(verbose, hi, lo);
237 }
238
239 //by marshmellow
240 //takes 3 arguments - clock, invert and maxErr as integers
241 //attempts to demodulate ask while decoding manchester
242 //prints binary found and saves in graphbuffer for further commands
243 int CmdAskEM410xDemod(const char *Cmd)
244 {
245 char cmdp = param_getchar(Cmd, 0);
246 if (strlen(Cmd) > 10 || cmdp == 'h' || cmdp == 'H') {
247 PrintAndLog("Usage: data askem410xdemod [clock] <0|1> [maxError]");
248 PrintAndLog(" [set clock as integer] optional, if not set, autodetect.");
249 PrintAndLog(" <invert>, 1 for invert output");
250 PrintAndLog(" [set maximum allowed errors], default = 100.");
251 PrintAndLog("");
252 PrintAndLog(" sample: data askem410xdemod = demod an EM410x Tag ID from GraphBuffer");
253 PrintAndLog(" : data askem410xdemod 32 = demod an EM410x Tag ID from GraphBuffer using a clock of RF/32");
254 PrintAndLog(" : data askem410xdemod 32 1 = demod an EM410x Tag ID from GraphBuffer using a clock of RF/32 and inverting data");
255 PrintAndLog(" : data askem410xdemod 1 = demod an EM410x Tag ID from GraphBuffer while inverting data");
256 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");
257 return 0;
258 }
259 uint64_t lo = 0;
260 uint32_t hi = 0;
261 return AskEm410xDemod(Cmd, &hi, &lo, true);
262 }
263
264 //by marshmellow
265 //Cmd Args: Clock, invert, maxErr, maxLen as integers and amplify as char == 'a'
266 // (amp may not be needed anymore)
267 //verbose will print results and demoding messages
268 //emSearch will auto search for EM410x format in bitstream
269 //askType switches decode: ask/raw = 0, ask/manchester = 1
270 int ASKDemod(const char *Cmd, bool verbose, bool emSearch, uint8_t askType)
271 {
272 int invert=0;
273 int clk=0;
274 int maxErr=100;
275 int maxLen=0;
276 uint8_t askAmp = 0;
277 char amp = param_getchar(Cmd, 0);
278 uint8_t BitStream[MAX_GRAPH_TRACE_LEN]={0};
279 sscanf(Cmd, "%i %i %i %i %c", &clk, &invert, &maxErr, &maxLen, &amp);
280 if (!maxLen) maxLen = 512*64;
281 if (invert != 0 && invert != 1) {
282 PrintAndLog("Invalid argument: %s", Cmd);
283 return 0;
284 }
285 if (clk==1){
286 invert=1;
287 clk=0;
288 }
289 if (amp == 'a' || amp == 'A') askAmp=1;
290 size_t BitLen = getFromGraphBuf(BitStream);
291 if (g_debugMode) PrintAndLog("DEBUG: Bitlen from grphbuff: %d",BitLen);
292 if (BitLen<255) return 0;
293 if (maxLen<BitLen && maxLen != 0) BitLen = maxLen;
294
295 int errCnt = askdemod(BitStream, &BitLen, &clk, &invert, maxErr, askAmp, askType);
296 if (errCnt<0 || BitLen<16){ //if fatal error (or -1)
297 if (g_debugMode) PrintAndLog("DEBUG: no data found %d, errors:%d, bitlen:%d, clock:%d",errCnt,invert,BitLen,clk);
298 return 0;
299 }
300 if (errCnt>maxErr){
301 if (g_debugMode) PrintAndLog("DEBUG: Too many errors found, errors:%d, bits:%d, clock:%d",errCnt, BitLen, clk);
302 return 0;
303 }
304 if (verbose || g_debugMode) PrintAndLog("\nUsing Clock:%d, Invert:%d, Bits Found:%d",clk,invert,BitLen);
305
306 //output
307 setDemodBuf(BitStream,BitLen,0);
308 if (verbose || g_debugMode){
309 if (errCnt>0) PrintAndLog("# Errors during Demoding (shown as 7 in bit stream): %d",errCnt);
310 if (askType) PrintAndLog("ASK/Manchester decoded bitstream:");
311 else PrintAndLog("ASK/Raw decoded bitstream:");
312 // Now output the bitstream to the scrollback by line of 16 bits
313 printDemodBuff();
314
315 }
316 uint64_t lo = 0;
317 uint32_t hi = 0;
318 if (emSearch){
319 AskEm410xDecode(true, &hi, &lo);
320 }
321 return 1;
322 }
323
324 //by marshmellow
325 //takes 5 arguments - clock, invert, maxErr, maxLen as integers and amplify as char == 'a'
326 //attempts to demodulate ask while decoding manchester
327 //prints binary found and saves in graphbuffer for further commands
328 int Cmdaskmandemod(const char *Cmd)
329 {
330 char cmdp = param_getchar(Cmd, 0);
331 if (strlen(Cmd) > 25 || cmdp == 'h' || cmdp == 'H') {
332 PrintAndLog("Usage: data rawdemod am [clock] <invert> [maxError] [maxLen] [amplify]");
333 PrintAndLog(" [set clock as integer] optional, if not set, autodetect");
334 PrintAndLog(" <invert>, 1 to invert output");
335 PrintAndLog(" [set maximum allowed errors], default = 100");
336 PrintAndLog(" [set maximum Samples to read], default = 32768 (512 bits at rf/64)");
337 PrintAndLog(" <amplify>, 'a' to attempt demod with ask amplification, default = no amp");
338 PrintAndLog("");
339 PrintAndLog(" sample: data rawdemod am = demod an ask/manchester tag from GraphBuffer");
340 PrintAndLog(" : data rawdemod am 32 = demod an ask/manchester tag from GraphBuffer using a clock of RF/32");
341 PrintAndLog(" : data rawdemod am 32 1 = demod an ask/manchester tag from GraphBuffer using a clock of RF/32 and inverting data");
342 PrintAndLog(" : data rawdemod am 1 = demod an ask/manchester tag from GraphBuffer while inverting data");
343 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");
344 return 0;
345 }
346 return ASKDemod(Cmd, TRUE, TRUE, 1);
347 }
348
349 //by marshmellow
350 //manchester decode
351 //stricktly take 10 and 01 and convert to 0 and 1
352 int Cmdmandecoderaw(const char *Cmd)
353 {
354 int i =0;
355 int errCnt=0;
356 size_t size=0;
357 int invert=0;
358 size_t maxErr = 20;
359 char cmdp = param_getchar(Cmd, 0);
360 if (strlen(Cmd) > 5 || cmdp == 'h' || cmdp == 'H') {
361 PrintAndLog("Usage: data manrawdecode [invert] [maxErr]");
362 PrintAndLog(" Takes 10 and 01 and converts to 0 and 1 respectively");
363 PrintAndLog(" --must have binary sequence in demodbuffer (run data askrawdemod first)");
364 PrintAndLog(" [invert] invert output");
365 PrintAndLog(" [maxErr] set number of errors allowed (default = 20)");
366 PrintAndLog("");
367 PrintAndLog(" sample: data manrawdecode = decode manchester bitstream from the demodbuffer");
368 return 0;
369 }
370 if (DemodBufferLen==0) return 0;
371 uint8_t BitStream[MAX_GRAPH_TRACE_LEN]={0};
372 int high=0,low=0;
373 for (;i<DemodBufferLen;++i){
374 if (DemodBuffer[i]>high) high=DemodBuffer[i];
375 else if(DemodBuffer[i]<low) low=DemodBuffer[i];
376 BitStream[i]=DemodBuffer[i];
377 }
378 if (high>7 || low <0 ){
379 PrintAndLog("Error: please raw demod the wave first then manchester raw decode");
380 return 0;
381 }
382
383 sscanf(Cmd, "%i %i", &invert, &maxErr);
384 size=i;
385 errCnt=manrawdecode(BitStream, &size, invert);
386 if (errCnt>=maxErr){
387 PrintAndLog("Too many errors: %d",errCnt);
388 return 0;
389 }
390 PrintAndLog("Manchester Decoded - # errors:%d - data:",errCnt);
391 PrintAndLog("%s", sprint_bin_break(BitStream, size, 16));
392 if (errCnt==0){
393 uint64_t id = 0;
394 uint32_t hi = 0;
395 size_t idx=0;
396 if (Em410xDecode(BitStream, &size, &idx, &hi, &id)){
397 //need to adjust to set bitstream back to manchester encoded data
398 //setDemodBuf(BitStream, size, idx);
399
400 printEM410x(hi, id);
401 }
402 }
403 return 1;
404 }
405
406 //by marshmellow
407 //biphase decode
408 //take 01 or 10 = 0 and 11 or 00 = 1
409 //takes 2 arguments "offset" default = 0 if 1 it will shift the decode by one bit
410 // and "invert" default = 0 if 1 it will invert output
411 // the argument offset allows us to manually shift if the output is incorrect - [EDIT: now auto detects]
412 int CmdBiphaseDecodeRaw(const char *Cmd)
413 {
414 size_t size=0;
415 int offset=0, invert=0, maxErr=20, errCnt=0;
416 char cmdp = param_getchar(Cmd, 0);
417 if (strlen(Cmd) > 3 || cmdp == 'h' || cmdp == 'H') {
418 PrintAndLog("Usage: data biphaserawdecode [offset] [invert] [maxErr]");
419 PrintAndLog(" Converts 10 or 01 to 1 and 11 or 00 to 0");
420 PrintAndLog(" --must have binary sequence in demodbuffer (run data askrawdemod first)");
421 PrintAndLog(" --invert for Conditional Dephase Encoding (CDP) AKA Differential Manchester");
422 PrintAndLog("");
423 PrintAndLog(" [offset <0|1>], set to 0 not to adjust start position or to 1 to adjust decode start position");
424 PrintAndLog(" [invert <0|1>], set to 1 to invert output");
425 PrintAndLog(" [maxErr int], set max errors tolerated - default=20");
426 PrintAndLog("");
427 PrintAndLog(" sample: data biphaserawdecode = decode biphase bitstream from the demodbuffer");
428 PrintAndLog(" sample: data biphaserawdecode 1 1 = decode biphase bitstream from the demodbuffer, set offset, and invert output");
429 return 0;
430 }
431 sscanf(Cmd, "%i %i %i", &offset, &invert, &maxErr);
432 if (DemodBufferLen==0){
433 PrintAndLog("DemodBuffer Empty - run 'data rawdemod ar' first");
434 return 0;
435 }
436 uint8_t BitStream[MAX_GRAPH_TRACE_LEN]={0};
437 memcpy(BitStream, DemodBuffer, DemodBufferLen);
438 size = DemodBufferLen;
439 errCnt=BiphaseRawDecode(BitStream, &size, offset, invert);
440 if (errCnt<0){
441 PrintAndLog("Error during decode:%d", errCnt);
442 return 0;
443 }
444 if (errCnt>maxErr){
445 PrintAndLog("Too many errors attempting to decode: %d",errCnt);
446 return 0;
447 }
448
449 if (errCnt>0){
450 PrintAndLog("# Errors found during Demod (shown as 7 in bit stream): %d",errCnt);
451 }
452 PrintAndLog("Biphase Decoded using offset: %d - # invert:%d - data:",offset,invert);
453 PrintAndLog("%s", sprint_bin_break(BitStream, size, 16));
454
455 if (offset) setDemodBuf(DemodBuffer,DemodBufferLen-offset, offset); //remove first bit from raw demod
456 return 1;
457 }
458
459 //by marshmellow
460 // - ASK Demod then Biphase decode GraphBuffer samples
461 int ASKbiphaseDemod(const char *Cmd, bool verbose)
462 {
463 //ask raw demod GraphBuffer first
464 int offset=0, clk=0, invert=0, maxErr=0, ans=0;
465 ans = sscanf(Cmd, "%i %i %i %i", &offset, &clk, &invert, &maxErr);
466 if (ans>0)
467 ans = ASKDemod(Cmd+1, FALSE, FALSE, 0);
468 else
469 ans = ASKDemod(Cmd, FALSE, FALSE, 0);
470 if (!ans) {
471 if (g_debugMode || verbose) PrintAndLog("Error AskDemod: %d", ans);
472 return 0;
473 }
474
475 //attempt to Biphase decode DemodBuffer
476 size_t size = DemodBufferLen;
477 uint8_t BitStream[MAX_DEMOD_BUF_LEN];
478 memcpy(BitStream, DemodBuffer, DemodBufferLen);
479 int errCnt = BiphaseRawDecode(BitStream, &size, offset, 0);
480 if (errCnt < 0){
481 if (g_debugMode || verbose) PrintAndLog("Error BiphaseRawDecode: %d", errCnt);
482 return 0;
483 }
484 if (errCnt > maxErr) {
485 if (g_debugMode || verbose) PrintAndLog("Error BiphaseRawDecode too many errors: %d", errCnt);
486 return 0;
487 }
488 //success set DemodBuffer and return
489 setDemodBuf(BitStream, size, 0);
490 if (g_debugMode || verbose){
491 PrintAndLog("Biphase Decoded using offset: %d - # errors:%d - data:",offset,errCnt);
492 printDemodBuff();
493 }
494 return 1;
495 }
496 //by marshmellow - see ASKbiphaseDemod
497 int Cmdaskbiphdemod(const char *Cmd)
498 {
499 char cmdp = param_getchar(Cmd, 0);
500 if (strlen(Cmd) > 25 || cmdp == 'h' || cmdp == 'H') {
501 PrintAndLog("Usage: data rawdemod ab [offset] [clock] <invert> [maxError] [maxLen] <amplify>");
502 PrintAndLog(" [offset], offset to begin biphase, default=0");
503 PrintAndLog(" [set clock as integer] optional, if not set, autodetect");
504 PrintAndLog(" <invert>, 1 to invert output");
505 PrintAndLog(" [set maximum allowed errors], default = 100");
506 PrintAndLog(" [set maximum Samples to read], default = 32768 (512 bits at rf/64)");
507 PrintAndLog(" <amplify>, 'a' to attempt demod with ask amplification, default = no amp");
508 PrintAndLog(" NOTE: <invert> can be entered as second or third argument");
509 PrintAndLog(" NOTE: <amplify> can be entered as first, second or last argument");
510 PrintAndLog(" NOTE: any other arg must have previous args set to work");
511 PrintAndLog("");
512 PrintAndLog(" NOTE: --invert for Conditional Dephase Encoding (CDP) AKA Differential Manchester");
513 PrintAndLog("");
514 PrintAndLog(" sample: data rawdemod ab = demod an ask/biph tag from GraphBuffer");
515 PrintAndLog(" : data rawdemod ab 0 a = demod an ask/biph tag from GraphBuffer, amplified");
516 PrintAndLog(" : data rawdemod ab 1 32 = demod an ask/biph tag from GraphBuffer using an offset of 1 and a clock of RF/32");
517 PrintAndLog(" : data rawdemod ab 0 32 1 = demod an ask/biph tag from GraphBuffer using a clock of RF/32 and inverting data");
518 PrintAndLog(" : data rawdemod ab 0 1 = demod an ask/biph tag from GraphBuffer while inverting data");
519 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");
520 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");
521 return 0;
522 }
523 return ASKbiphaseDemod(Cmd, TRUE);
524 }
525
526 //by marshmellow
527 //attempts to demodulate and identify a G_Prox_II verex/chubb card
528 //WARNING: if it fails during some points it will destroy the DemodBuffer data
529 // but will leave the GraphBuffer intact.
530 //if successful it will push askraw data back to demod buffer ready for emulation
531 int CmdG_Prox_II_Demod(const char *Cmd)
532 {
533 if (!ASKbiphaseDemod(Cmd, FALSE)){
534 if (g_debugMode) PrintAndLog("ASKbiphaseDemod failed 1st try");
535 return 0;
536 }
537 size_t size = DemodBufferLen;
538 //call lfdemod.c demod for gProxII
539 int ans = gProxII_Demod(DemodBuffer, &size);
540 if (ans < 0){
541 if (g_debugMode) PrintAndLog("Error gProxII_Demod");
542 return 0;
543 }
544 //got a good demod
545 uint32_t ByteStream[65] = {0x00};
546 uint8_t xorKey=0;
547 uint8_t keyCnt=0;
548 uint8_t bitCnt=0;
549 uint8_t ByteCnt=0;
550 size_t startIdx = ans + 6; //start after preamble
551 for (size_t idx = 0; idx<size-6; idx++){
552 if ((idx+1) % 5 == 0){
553 //spacer bit - should be 0
554 if (DemodBuffer[startIdx+idx] != 0) {
555 if (g_debugMode) PrintAndLog("Error spacer not 0: %d, pos: %d",DemodBuffer[startIdx+idx],startIdx+idx);
556 return 0;
557 }
558 continue;
559 }
560 if (keyCnt<8){ //lsb first
561 xorKey = xorKey | (DemodBuffer[startIdx+idx]<<keyCnt);
562 keyCnt++;
563 if (keyCnt==8 && g_debugMode) PrintAndLog("xorKey Found: %02x", xorKey);
564 continue;
565 }
566 //lsb first
567 ByteStream[ByteCnt] = ByteStream[ByteCnt] | (DemodBuffer[startIdx+idx]<<bitCnt);
568 bitCnt++;
569 if (bitCnt % 8 == 0){
570 if (g_debugMode) PrintAndLog("byte %d: %02x",ByteCnt,ByteStream[ByteCnt]);
571 bitCnt=0;
572 ByteCnt++;
573 }
574 }
575 for (uint8_t i = 0; i < ByteCnt; i++){
576 ByteStream[i] ^= xorKey; //xor
577 if (g_debugMode) PrintAndLog("byte %d after xor: %02x", i, ByteStream[i]);
578 }
579 //now ByteStream contains 64 bytes of decrypted raw tag data
580 //
581 uint8_t fmtLen = ByteStream[0]>>2;
582 uint32_t FC = 0;
583 uint32_t Card = 0;
584 uint32_t raw1 = bytebits_to_byte(DemodBuffer+ans,32);
585 uint32_t raw2 = bytebits_to_byte(DemodBuffer+ans+32, 32);
586 uint32_t raw3 = bytebits_to_byte(DemodBuffer+ans+64, 32);
587
588 if (fmtLen==36){
589 FC = ((ByteStream[3] & 0x7F)<<7) | (ByteStream[4]>>1);
590 Card = ((ByteStream[4]&1)<<19) | (ByteStream[5]<<11) | (ByteStream[6]<<3) | (ByteStream[7]>>5);
591 PrintAndLog("G-Prox-II Found: FmtLen %d, FC %d, Card %d",fmtLen,FC,Card);
592 } else if(fmtLen==26){
593 FC = ((ByteStream[3] & 0x7F)<<1) | (ByteStream[4]>>7);
594 Card = ((ByteStream[4]&0x7F)<<9) | (ByteStream[5]<<1) | (ByteStream[6]>>7);
595 PrintAndLog("G-Prox-II Found: FmtLen %d, FC %d, Card %d",fmtLen,FC,Card);
596 } else {
597 PrintAndLog("Unknown G-Prox-II Fmt Found: FmtLen %d",fmtLen);
598 }
599 PrintAndLog("Raw: %08x%08x%08x", raw1,raw2,raw3);
600 setDemodBuf(DemodBuffer+ans, 96, 0);
601 return 1;
602 }
603
604 //by marshmellow - see ASKDemod
605 int Cmdaskrawdemod(const char *Cmd)
606 {
607 char cmdp = param_getchar(Cmd, 0);
608 if (strlen(Cmd) > 25 || cmdp == 'h' || cmdp == 'H') {
609 PrintAndLog("Usage: data rawdemod ar [clock] <invert> [maxError] [maxLen] [amplify]");
610 PrintAndLog(" [set clock as integer] optional, if not set, autodetect");
611 PrintAndLog(" <invert>, 1 to invert output");
612 PrintAndLog(" [set maximum allowed errors], default = 100");
613 PrintAndLog(" [set maximum Samples to read], default = 32768 (1024 bits at rf/64)");
614 PrintAndLog(" <amplify>, 'a' to attempt demod with ask amplification, default = no amp");
615 PrintAndLog("");
616 PrintAndLog(" sample: data rawdemod ar = demod an ask tag from GraphBuffer");
617 PrintAndLog(" : data rawdemod ar a = demod an ask tag from GraphBuffer, amplified");
618 PrintAndLog(" : data rawdemod ar 32 = demod an ask tag from GraphBuffer using a clock of RF/32");
619 PrintAndLog(" : data rawdemod ar 32 1 = demod an ask tag from GraphBuffer using a clock of RF/32 and inverting data");
620 PrintAndLog(" : data rawdemod ar 1 = demod an ask tag from GraphBuffer while inverting data");
621 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");
622 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");
623 return 0;
624 }
625 return ASKDemod(Cmd, TRUE, FALSE, 0);
626 }
627
628 int AutoCorrelate(int window, bool SaveGrph, bool verbose)
629 {
630 static int CorrelBuffer[MAX_GRAPH_TRACE_LEN];
631 size_t Correlation = 0;
632 int maxSum = 0;
633 int lastMax = 0;
634 if (verbose) PrintAndLog("performing %d correlations", GraphTraceLen - window);
635 for (int i = 0; i < GraphTraceLen - window; ++i) {
636 int sum = 0;
637 for (int j = 0; j < window; ++j) {
638 sum += (GraphBuffer[j]*GraphBuffer[i + j]) / 256;
639 }
640 CorrelBuffer[i] = sum;
641 if (sum >= maxSum-100 && sum <= maxSum+100){
642 //another max
643 Correlation = i-lastMax;
644 lastMax = i;
645 if (sum > maxSum) maxSum = sum;
646 } else if (sum > maxSum){
647 maxSum=sum;
648 lastMax = i;
649 }
650 }
651 if (Correlation==0){
652 //try again with wider margin
653 for (int i = 0; i < GraphTraceLen - window; i++){
654 if (CorrelBuffer[i] >= maxSum-(maxSum*0.05) && CorrelBuffer[i] <= maxSum+(maxSum*0.05)){
655 //another max
656 Correlation = i-lastMax;
657 lastMax = i;
658 //if (CorrelBuffer[i] > maxSum) maxSum = sum;
659 }
660 }
661 }
662 if (verbose && Correlation > 0) PrintAndLog("Possible Correlation: %d samples",Correlation);
663
664 if (SaveGrph){
665 GraphTraceLen = GraphTraceLen - window;
666 memcpy(GraphBuffer, CorrelBuffer, GraphTraceLen * sizeof (int));
667 RepaintGraphWindow();
668 }
669 return Correlation;
670 }
671
672 int usage_data_autocorr(void)
673 {
674 //print help
675 PrintAndLog("Usage: data autocorr [window] [g]");
676 PrintAndLog("Options: ");
677 PrintAndLog(" h This help");
678 PrintAndLog(" [window] window length for correlation - default = 4000");
679 PrintAndLog(" g save back to GraphBuffer (overwrite)");
680 return 0;
681 }
682
683 int CmdAutoCorr(const char *Cmd)
684 {
685 char cmdp = param_getchar(Cmd, 0);
686 if (cmdp == 'h' || cmdp == 'H')
687 return usage_data_autocorr();
688 int window = 4000; //set default
689 char grph=0;
690 bool updateGrph = FALSE;
691 sscanf(Cmd, "%i %c", &window, &grph);
692
693 if (window >= GraphTraceLen) {
694 PrintAndLog("window must be smaller than trace (%d samples)",
695 GraphTraceLen);
696 return 0;
697 }
698 if (grph == 'g') updateGrph=TRUE;
699 return AutoCorrelate(window, updateGrph, TRUE);
700 }
701
702 int CmdBitsamples(const char *Cmd)
703 {
704 int cnt = 0;
705 uint8_t got[12288];
706
707 GetFromBigBuf(got,sizeof(got),0);
708 WaitForResponse(CMD_ACK,NULL);
709
710 for (int j = 0; j < sizeof(got); j++) {
711 for (int k = 0; k < 8; k++) {
712 if(got[j] & (1 << (7 - k))) {
713 GraphBuffer[cnt++] = 1;
714 } else {
715 GraphBuffer[cnt++] = 0;
716 }
717 }
718 }
719 GraphTraceLen = cnt;
720 RepaintGraphWindow();
721 return 0;
722 }
723
724 int CmdBuffClear(const char *Cmd)
725 {
726 UsbCommand c = {CMD_BUFF_CLEAR};
727 SendCommand(&c);
728 ClearGraph(true);
729 return 0;
730 }
731
732 int CmdDec(const char *Cmd)
733 {
734 for (int i = 0; i < (GraphTraceLen / 2); ++i)
735 GraphBuffer[i] = GraphBuffer[i * 2];
736 GraphTraceLen /= 2;
737 PrintAndLog("decimated by 2");
738 RepaintGraphWindow();
739 return 0;
740 }
741 /**
742 * Undecimate - I'd call it 'interpolate', but we'll save that
743 * name until someone does an actual interpolation command, not just
744 * blindly repeating samples
745 * @param Cmd
746 * @return
747 */
748 int CmdUndec(const char *Cmd)
749 {
750 if(param_getchar(Cmd, 0) == 'h')
751 {
752 PrintAndLog("Usage: data undec [factor]");
753 PrintAndLog("This function performs un-decimation, by repeating each sample N times");
754 PrintAndLog("Options: ");
755 PrintAndLog(" h This help");
756 PrintAndLog(" factor The number of times to repeat each sample.[default:2]");
757 PrintAndLog("Example: 'data undec 3'");
758 return 0;
759 }
760
761 uint8_t factor = param_get8ex(Cmd, 0,2, 10);
762 //We have memory, don't we?
763 int swap[MAX_GRAPH_TRACE_LEN] = { 0 };
764 uint32_t g_index = 0 ,s_index = 0;
765 while(g_index < GraphTraceLen && s_index < MAX_GRAPH_TRACE_LEN)
766 {
767 int count = 0;
768 for(count = 0; count < factor && s_index+count < MAX_GRAPH_TRACE_LEN; count ++)
769 swap[s_index+count] = GraphBuffer[g_index];
770 s_index+=count;
771 }
772
773 memcpy(GraphBuffer,swap, s_index * sizeof(int));
774 GraphTraceLen = s_index;
775 RepaintGraphWindow();
776 return 0;
777 }
778
779 //by marshmellow
780 //shift graph zero up or down based on input + or -
781 int CmdGraphShiftZero(const char *Cmd)
782 {
783
784 int shift=0;
785 //set options from parameters entered with the command
786 sscanf(Cmd, "%i", &shift);
787 int shiftedVal=0;
788 for(int i = 0; i<GraphTraceLen; i++){
789 shiftedVal=GraphBuffer[i]+shift;
790 if (shiftedVal>127)
791 shiftedVal=127;
792 else if (shiftedVal<-127)
793 shiftedVal=-127;
794 GraphBuffer[i]= shiftedVal;
795 }
796 CmdNorm("");
797 return 0;
798 }
799
800 //by marshmellow
801 //use large jumps in read samples to identify edges of waves and then amplify that wave to max
802 //similar to dirtheshold, threshold commands
803 //takes a threshold length which is the measured length between two samples then determines an edge
804 int CmdAskEdgeDetect(const char *Cmd)
805 {
806 int thresLen = 25;
807 sscanf(Cmd, "%i", &thresLen);
808
809 for(int i = 1; i<GraphTraceLen; i++){
810 if (GraphBuffer[i]-GraphBuffer[i-1]>=thresLen) //large jump up
811 GraphBuffer[i-1] = 127;
812 else if(GraphBuffer[i]-GraphBuffer[i-1]<=-1*thresLen) //large jump down
813 GraphBuffer[i-1] = -127;
814 }
815 RepaintGraphWindow();
816 return 0;
817 }
818
819 /* Print our clock rate */
820 // uses data from graphbuffer
821 // adjusted to take char parameter for type of modulation to find the clock - by marshmellow.
822 int CmdDetectClockRate(const char *Cmd)
823 {
824 char cmdp = param_getchar(Cmd, 0);
825 if (strlen(Cmd) > 6 || strlen(Cmd) == 0 || cmdp == 'h' || cmdp == 'H') {
826 PrintAndLog("Usage: data detectclock [modulation] <clock>");
827 PrintAndLog(" [modulation as char], specify the modulation type you want to detect the clock of");
828 PrintAndLog(" <clock> , specify the clock (optional - to get best start position only)");
829 PrintAndLog(" 'a' = ask, 'f' = fsk, 'n' = nrz/direct, 'p' = psk");
830 PrintAndLog("");
831 PrintAndLog(" sample: data detectclock a = detect the clock of an ask modulated wave in the GraphBuffer");
832 PrintAndLog(" data detectclock f = detect the clock of an fsk modulated wave in the GraphBuffer");
833 PrintAndLog(" data detectclock p = detect the clock of an psk modulated wave in the GraphBuffer");
834 PrintAndLog(" data detectclock n = detect the clock of an nrz/direct modulated wave in the GraphBuffer");
835 }
836 int ans=0;
837 if (cmdp == 'a'){
838 ans = GetAskClock(Cmd+1, true, false);
839 } else if (cmdp == 'f'){
840 ans = GetFskClock("", true, false);
841 } else if (cmdp == 'n'){
842 ans = GetNrzClock("", true, false);
843 } else if (cmdp == 'p'){
844 ans = GetPskClock("", true, false);
845 } else {
846 PrintAndLog ("Please specify a valid modulation to detect the clock of - see option h for help");
847 }
848 return ans;
849 }
850
851 char *GetFSKType(uint8_t fchigh, uint8_t fclow, uint8_t invert)
852 {
853 char *fskType;
854 if (fchigh==10 && fclow==8){
855 if (invert) //fsk2a
856 fskType = "FSK2a";
857 else //fsk2
858 fskType = "FSK2";
859 } else if (fchigh == 8 && fclow == 5) {
860 if (invert)
861 fskType = "FSK1";
862 else
863 fskType = "FSK1a";
864 } else {
865 fskType = "FSK??";
866 }
867 return fskType;
868 }
869
870 //by marshmellow
871 //fsk raw demod and print binary
872 //takes 4 arguments - Clock, invert, fchigh, fclow
873 //defaults: clock = 50, invert=1, fchigh=10, fclow=8 (RF/10 RF/8 (fsk2a))
874 int FSKrawDemod(const char *Cmd, bool verbose)
875 {
876 //raw fsk demod no manchester decoding no start bit finding just get binary from wave
877 //set defaults
878 int rfLen = 0;
879 int invert = 0;
880 int fchigh = 0;
881 int fclow = 0;
882
883 //set options from parameters entered with the command
884 sscanf(Cmd, "%i %i %i %i", &rfLen, &invert, &fchigh, &fclow);
885
886 if (strlen(Cmd)>0 && strlen(Cmd)<=2) {
887 if (rfLen==1){
888 invert = 1; //if invert option only is used
889 rfLen = 0;
890 }
891 }
892
893 uint8_t BitStream[MAX_GRAPH_TRACE_LEN]={0};
894 size_t BitLen = getFromGraphBuf(BitStream);
895 if (BitLen==0) return 0;
896 //get field clock lengths
897 uint16_t fcs=0;
898 if (fchigh==0 || fclow == 0){
899 fcs = countFC(BitStream, BitLen, 1);
900 if (fcs==0){
901 fchigh=10;
902 fclow=8;
903 }else{
904 fchigh = (fcs >> 8) & 0xFF;
905 fclow = fcs & 0xFF;
906 }
907 }
908 //get bit clock length
909 if (rfLen==0){
910 rfLen = detectFSKClk(BitStream, BitLen, fchigh, fclow);
911 if (rfLen == 0) rfLen = 50;
912 }
913 int size = fskdemod(BitStream,BitLen,(uint8_t)rfLen,(uint8_t)invert,(uint8_t)fchigh,(uint8_t)fclow);
914 if (size>0){
915 setDemodBuf(BitStream,size,0);
916
917 // Now output the bitstream to the scrollback by line of 16 bits
918 if (verbose || g_debugMode) {
919 PrintAndLog("\nUsing Clock:%d, invert:%d, fchigh:%d, fclow:%d", rfLen, invert, fchigh, fclow);
920 PrintAndLog("%s decoded bitstream:",GetFSKType(fchigh,fclow,invert));
921 printDemodBuff();
922 }
923
924 return 1;
925 } else{
926 if (g_debugMode) PrintAndLog("no FSK data found");
927 }
928 return 0;
929 }
930
931 //by marshmellow
932 //fsk raw demod and print binary
933 //takes 4 arguments - Clock, invert, fchigh, fclow
934 //defaults: clock = 50, invert=1, fchigh=10, fclow=8 (RF/10 RF/8 (fsk2a))
935 int CmdFSKrawdemod(const char *Cmd)
936 {
937 char cmdp = param_getchar(Cmd, 0);
938 if (strlen(Cmd) > 10 || cmdp == 'h' || cmdp == 'H') {
939 PrintAndLog("Usage: data rawdemod fs [clock] <invert> [fchigh] [fclow]");
940 PrintAndLog(" [set clock as integer] optional, omit for autodetect.");
941 PrintAndLog(" <invert>, 1 for invert output, can be used even if the clock is omitted");
942 PrintAndLog(" [fchigh], larger field clock length, omit for autodetect");
943 PrintAndLog(" [fclow], small field clock length, omit for autodetect");
944 PrintAndLog("");
945 PrintAndLog(" sample: data rawdemod fs = demod an fsk tag from GraphBuffer using autodetect");
946 PrintAndLog(" : data rawdemod fs 32 = demod an fsk tag from GraphBuffer using a clock of RF/32, autodetect fc");
947 PrintAndLog(" : data rawdemod fs 1 = demod an fsk tag from GraphBuffer using autodetect, invert output");
948 PrintAndLog(" : data rawdemod fs 32 1 = demod an fsk tag from GraphBuffer using a clock of RF/32, invert output, autodetect fc");
949 PrintAndLog(" : data rawdemod fs 64 0 8 5 = demod an fsk1 RF/64 tag from GraphBuffer");
950 PrintAndLog(" : data rawdemod fs 50 0 10 8 = demod an fsk2 RF/50 tag from GraphBuffer");
951 PrintAndLog(" : data rawdemod fs 50 1 10 8 = demod an fsk2a RF/50 tag from GraphBuffer");
952 return 0;
953 }
954 return FSKrawDemod(Cmd, TRUE);
955 }
956
957 //by marshmellow (based on existing demod + holiman's refactor)
958 //HID Prox demod - FSK RF/50 with preamble of 00011101 (then manchester encoded)
959 //print full HID Prox ID and some bit format details if found
960 int CmdFSKdemodHID(const char *Cmd)
961 {
962 //raw fsk demod no manchester decoding no start bit finding just get binary from wave
963 uint32_t hi2=0, hi=0, lo=0;
964
965 uint8_t BitStream[MAX_GRAPH_TRACE_LEN]={0};
966 size_t BitLen = getFromGraphBuf(BitStream);
967 if (BitLen==0) return 0;
968 //get binary from fsk wave
969 int idx = HIDdemodFSK(BitStream,&BitLen,&hi2,&hi,&lo);
970 if (idx<0){
971 if (g_debugMode){
972 if (idx==-1){
973 PrintAndLog("DEBUG: Just Noise Detected");
974 } else if (idx == -2) {
975 PrintAndLog("DEBUG: Error demoding fsk");
976 } else if (idx == -3) {
977 PrintAndLog("DEBUG: Preamble not found");
978 } else if (idx == -4) {
979 PrintAndLog("DEBUG: Error in Manchester data, SIZE: %d", BitLen);
980 } else {
981 PrintAndLog("DEBUG: Error demoding fsk %d", idx);
982 }
983 }
984 return 0;
985 }
986 if (hi2==0 && hi==0 && lo==0) {
987 if (g_debugMode) PrintAndLog("DEBUG: Error - no values found");
988 return 0;
989 }
990 if (hi2 != 0){ //extra large HID tags
991 PrintAndLog("HID Prox TAG ID: %x%08x%08x (%d)",
992 (unsigned int) hi2, (unsigned int) hi, (unsigned int) lo, (unsigned int) (lo>>1) & 0xFFFF);
993 }
994 else { //standard HID tags <38 bits
995 uint8_t fmtLen = 0;
996 uint32_t fc = 0;
997 uint32_t cardnum = 0;
998 if (((hi>>5)&1)==1){//if bit 38 is set then < 37 bit format is used
999 uint32_t lo2=0;
1000 lo2=(((hi & 31) << 12) | (lo>>20)); //get bits 21-37 to check for format len bit
1001 uint8_t idx3 = 1;
1002 while(lo2>1){ //find last bit set to 1 (format len bit)
1003 lo2=lo2>>1;
1004 idx3++;
1005 }
1006 fmtLen =idx3+19;
1007 fc =0;
1008 cardnum=0;
1009 if(fmtLen==26){
1010 cardnum = (lo>>1)&0xFFFF;
1011 fc = (lo>>17)&0xFF;
1012 }
1013 if(fmtLen==34){
1014 cardnum = (lo>>1)&0xFFFF;
1015 fc= ((hi&1)<<15)|(lo>>17);
1016 }
1017 if(fmtLen==35){
1018 cardnum = (lo>>1)&0xFFFFF;
1019 fc = ((hi&1)<<11)|(lo>>21);
1020 }
1021 }
1022 else { //if bit 38 is not set then 37 bit format is used
1023 fmtLen = 37;
1024 fc = 0;
1025 cardnum = 0;
1026 if(fmtLen == 37){
1027 cardnum = (lo>>1)&0x7FFFF;
1028 fc = ((hi&0xF)<<12)|(lo>>20);
1029 }
1030 }
1031 PrintAndLog("HID Prox TAG ID: %x%08x (%d) - Format Len: %dbit - FC: %d - Card: %d",
1032 (unsigned int) hi, (unsigned int) lo, (unsigned int) (lo>>1) & 0xFFFF,
1033 (unsigned int) fmtLen, (unsigned int) fc, (unsigned int) cardnum);
1034 }
1035 setDemodBuf(BitStream,BitLen,idx);
1036 if (g_debugMode){
1037 PrintAndLog("DEBUG: idx: %d, Len: %d, Printing Demod Buffer:", idx, BitLen);
1038 printDemodBuff();
1039 }
1040 return 1;
1041 }
1042
1043 //by marshmellow
1044 //Paradox Prox demod - FSK RF/50 with preamble of 00001111 (then manchester encoded)
1045 //print full Paradox Prox ID and some bit format details if found
1046 int CmdFSKdemodParadox(const char *Cmd)
1047 {
1048 //raw fsk demod no manchester decoding no start bit finding just get binary from wave
1049 uint32_t hi2=0, hi=0, lo=0;
1050
1051 uint8_t BitStream[MAX_GRAPH_TRACE_LEN]={0};
1052 size_t BitLen = getFromGraphBuf(BitStream);
1053 if (BitLen==0) return 0;
1054 //get binary from fsk wave
1055 int idx = ParadoxdemodFSK(BitStream,&BitLen,&hi2,&hi,&lo);
1056 if (idx<0){
1057 if (g_debugMode){
1058 if (idx==-1){
1059 PrintAndLog("DEBUG: Just Noise Detected");
1060 } else if (idx == -2) {
1061 PrintAndLog("DEBUG: Error demoding fsk");
1062 } else if (idx == -3) {
1063 PrintAndLog("DEBUG: Preamble not found");
1064 } else if (idx == -4) {
1065 PrintAndLog("DEBUG: Error in Manchester data");
1066 } else {
1067 PrintAndLog("DEBUG: Error demoding fsk %d", idx);
1068 }
1069 }
1070 return 0;
1071 }
1072 if (hi2==0 && hi==0 && lo==0){
1073 if (g_debugMode) PrintAndLog("DEBUG: Error - no value found");
1074 return 0;
1075 }
1076 uint32_t fc = ((hi & 0x3)<<6) | (lo>>26);
1077 uint32_t cardnum = (lo>>10)&0xFFFF;
1078 uint32_t rawLo = bytebits_to_byte(BitStream+idx+64,32);
1079 uint32_t rawHi = bytebits_to_byte(BitStream+idx+32,32);
1080 uint32_t rawHi2 = bytebits_to_byte(BitStream+idx,32);
1081
1082 PrintAndLog("Paradox TAG ID: %x%08x - FC: %d - Card: %d - Checksum: %02x - RAW: %08x%08x%08x",
1083 hi>>10, (hi & 0x3)<<26 | (lo>>10), fc, cardnum, (lo>>2) & 0xFF, rawHi2, rawHi, rawLo);
1084 setDemodBuf(BitStream,BitLen,idx);
1085 if (g_debugMode){
1086 PrintAndLog("DEBUG: idx: %d, len: %d, Printing Demod Buffer:", idx, BitLen);
1087 printDemodBuff();
1088 }
1089 return 1;
1090 }
1091
1092 //by marshmellow
1093 //IO-Prox demod - FSK RF/64 with preamble of 000000001
1094 //print ioprox ID and some format details
1095 int CmdFSKdemodIO(const char *Cmd)
1096 {
1097 //raw fsk demod no manchester decoding no start bit finding just get binary from wave
1098 //set defaults
1099 int idx=0;
1100 //something in graphbuffer?
1101 if (GraphTraceLen < 65) {
1102 if (g_debugMode)PrintAndLog("DEBUG: not enough samples in GraphBuffer");
1103 return 0;
1104 }
1105 uint8_t BitStream[MAX_GRAPH_TRACE_LEN]={0};
1106 size_t BitLen = getFromGraphBuf(BitStream);
1107 if (BitLen==0) return 0;
1108
1109 //get binary from fsk wave
1110 idx = IOdemodFSK(BitStream,BitLen);
1111 if (idx<0){
1112 if (g_debugMode){
1113 if (idx==-1){
1114 PrintAndLog("DEBUG: Just Noise Detected");
1115 } else if (idx == -2) {
1116 PrintAndLog("DEBUG: not enough samples");
1117 } else if (idx == -3) {
1118 PrintAndLog("DEBUG: error during fskdemod");
1119 } else if (idx == -4) {
1120 PrintAndLog("DEBUG: Preamble not found");
1121 } else if (idx == -5) {
1122 PrintAndLog("DEBUG: Separator bits not found");
1123 } else {
1124 PrintAndLog("DEBUG: Error demoding fsk %d", idx);
1125 }
1126 }
1127 return 0;
1128 }
1129 if (idx==0){
1130 if (g_debugMode){
1131 PrintAndLog("DEBUG: IO Prox Data not found - FSK Bits: %d",BitLen);
1132 if (BitLen > 92) PrintAndLog("%s", sprint_bin_break(BitStream,92,16));
1133 }
1134 return 0;
1135 }
1136 //Index map
1137 //0 10 20 30 40 50 60
1138 //| | | | | | |
1139 //01234567 8 90123456 7 89012345 6 78901234 5 67890123 4 56789012 3 45678901 23
1140 //-----------------------------------------------------------------------------
1141 //00000000 0 11110000 1 facility 1 version* 1 code*one 1 code*two 1 ???????? 11
1142 //
1143 //XSF(version)facility:codeone+codetwo (raw)
1144 //Handle the data
1145 if (idx+64>BitLen) {
1146 if (g_debugMode) PrintAndLog("not enough bits found - bitlen: %d",BitLen);
1147 return 0;
1148 }
1149 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]);
1150 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]);
1151 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]);
1152 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]);
1153 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]);
1154 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]);
1155 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]);
1156
1157 uint32_t code = bytebits_to_byte(BitStream+idx,32);
1158 uint32_t code2 = bytebits_to_byte(BitStream+idx+32,32);
1159 uint8_t version = bytebits_to_byte(BitStream+idx+27,8); //14,4
1160 uint8_t facilitycode = bytebits_to_byte(BitStream+idx+18,8) ;
1161 uint16_t number = (bytebits_to_byte(BitStream+idx+36,8)<<8)|(bytebits_to_byte(BitStream+idx+45,8)); //36,9
1162 uint8_t crc = bytebits_to_byte(BitStream+idx+54,8);
1163 uint16_t calccrc = 0;
1164
1165 for (uint8_t i=1; i<6; ++i){
1166 calccrc += bytebits_to_byte(BitStream+idx+9*i,8);
1167 }
1168 calccrc &= 0xff;
1169 calccrc = 0xff - calccrc;
1170
1171 char *crcStr = (crc == calccrc) ? "crc ok": "!crc";
1172
1173 PrintAndLog("IO Prox XSF(%02d)%02x:%05d (%08x%08x) [%02x %s]",version,facilitycode,number,code,code2, crc, crcStr);
1174 setDemodBuf(BitStream,64,idx);
1175 if (g_debugMode){
1176 PrintAndLog("DEBUG: idx: %d, Len: %d, Printing demod buffer:",idx,64);
1177 printDemodBuff();
1178 }
1179 return 1;
1180 }
1181
1182 //by marshmellow
1183 //AWID Prox demod - FSK RF/50 with preamble of 00000001 (always a 96 bit data stream)
1184 //print full AWID Prox ID and some bit format details if found
1185 int CmdFSKdemodAWID(const char *Cmd)
1186 {
1187
1188 //int verbose=1;
1189 //sscanf(Cmd, "%i", &verbose);
1190
1191 //raw fsk demod no manchester decoding no start bit finding just get binary from wave
1192 uint8_t BitStream[MAX_GRAPH_TRACE_LEN]={0};
1193 size_t size = getFromGraphBuf(BitStream);
1194 if (size==0) return 0;
1195
1196 //get binary from fsk wave
1197 int idx = AWIDdemodFSK(BitStream, &size);
1198 if (idx<=0){
1199 if (g_debugMode==1){
1200 if (idx == -1)
1201 PrintAndLog("DEBUG: Error - not enough samples");
1202 else if (idx == -2)
1203 PrintAndLog("DEBUG: Error - only noise found");
1204 else if (idx == -3)
1205 PrintAndLog("DEBUG: Error - problem during FSK demod");
1206 else if (idx == -4)
1207 PrintAndLog("DEBUG: Error - AWID preamble not found");
1208 else if (idx == -5)
1209 PrintAndLog("DEBUG: Error - Size not correct: %d", size);
1210 else
1211 PrintAndLog("DEBUG: Error %d",idx);
1212 }
1213 return 0;
1214 }
1215
1216 // Index map
1217 // 0 10 20 30 40 50 60
1218 // | | | | | | |
1219 // 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
1220 // -----------------------------------------------------------------------------
1221 // 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
1222 // 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
1223 // |---26 bit---| |-----117----||-------------142-------------|
1224 // b = format bit len, o = odd parity of last 3 bits
1225 // f = facility code, c = card number
1226 // w = wiegand parity
1227 // (26 bit format shown)
1228
1229 //get raw ID before removing parities
1230 uint32_t rawLo = bytebits_to_byte(BitStream+idx+64,32);
1231 uint32_t rawHi = bytebits_to_byte(BitStream+idx+32,32);
1232 uint32_t rawHi2 = bytebits_to_byte(BitStream+idx,32);
1233 setDemodBuf(BitStream,96,idx);
1234
1235 size = removeParity(BitStream, idx+8, 4, 1, 88);
1236 if (size != 66){
1237 if (g_debugMode==1) PrintAndLog("DEBUG: Error - at parity check-tag size does not match AWID format");
1238 return 0;
1239 }
1240 // ok valid card found!
1241
1242 // Index map
1243 // 0 10 20 30 40 50 60
1244 // | | | | | | |
1245 // 01234567 8 90123456 7890123456789012 3 456789012345678901234567890123456
1246 // -----------------------------------------------------------------------------
1247 // 00011010 1 01110101 0000000010001110 1 000000000000000000000000000000000
1248 // bbbbbbbb w ffffffff cccccccccccccccc w xxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxx
1249 // |26 bit| |-117--| |-----142------|
1250 // b = format bit len, o = odd parity of last 3 bits
1251 // f = facility code, c = card number
1252 // w = wiegand parity
1253 // (26 bit format shown)
1254
1255 uint32_t fc = 0;
1256 uint32_t cardnum = 0;
1257 uint32_t code1 = 0;
1258 uint32_t code2 = 0;
1259 uint8_t fmtLen = bytebits_to_byte(BitStream,8);
1260 if (fmtLen==26){
1261 fc = bytebits_to_byte(BitStream+9, 8);
1262 cardnum = bytebits_to_byte(BitStream+17, 16);
1263 code1 = bytebits_to_byte(BitStream+8,fmtLen);
1264 PrintAndLog("AWID Found - BitLength: %d, FC: %d, Card: %d - Wiegand: %x, Raw: %08x%08x%08x", fmtLen, fc, cardnum, code1, rawHi2, rawHi, rawLo);
1265 } else {
1266 cardnum = bytebits_to_byte(BitStream+8+(fmtLen-17), 16);
1267 if (fmtLen>32){
1268 code1 = bytebits_to_byte(BitStream+8,fmtLen-32);
1269 code2 = bytebits_to_byte(BitStream+8+(fmtLen-32),32);
1270 PrintAndLog("AWID Found - BitLength: %d -unknown BitLength- (%d) - Wiegand: %x%08x, Raw: %08x%08x%08x", fmtLen, cardnum, code1, code2, rawHi2, rawHi, rawLo);
1271 } else{
1272 code1 = bytebits_to_byte(BitStream+8,fmtLen);
1273 PrintAndLog("AWID Found - BitLength: %d -unknown BitLength- (%d) - Wiegand: %x, Raw: %08x%08x%08x", fmtLen, cardnum, code1, rawHi2, rawHi, rawLo);
1274 }
1275 }
1276 if (g_debugMode){
1277 PrintAndLog("DEBUG: idx: %d, Len: %d Printing Demod Buffer:", idx, 96);
1278 printDemodBuff();
1279 }
1280 //todo - convert hi2, hi, lo to demodbuffer for future sim/clone commands
1281 return 1;
1282 }
1283
1284 //by marshmellow
1285 //Pyramid Prox demod - FSK RF/50 with preamble of 0000000000000001 (always a 128 bit data stream)
1286 //print full Farpointe Data/Pyramid Prox ID and some bit format details if found
1287 int CmdFSKdemodPyramid(const char *Cmd)
1288 {
1289 //raw fsk demod no manchester decoding no start bit finding just get binary from wave
1290 uint8_t BitStream[MAX_GRAPH_TRACE_LEN]={0};
1291 size_t size = getFromGraphBuf(BitStream);
1292 if (size==0) return 0;
1293
1294 //get binary from fsk wave
1295 int idx = PyramiddemodFSK(BitStream, &size);
1296 if (idx < 0){
1297 if (g_debugMode==1){
1298 if (idx == -5)
1299 PrintAndLog("DEBUG: Error - not enough samples");
1300 else if (idx == -1)
1301 PrintAndLog("DEBUG: Error - only noise found");
1302 else if (idx == -2)
1303 PrintAndLog("DEBUG: Error - problem during FSK demod");
1304 else if (idx == -3)
1305 PrintAndLog("DEBUG: Error - Size not correct: %d", size);
1306 else if (idx == -4)
1307 PrintAndLog("DEBUG: Error - Pyramid preamble not found");
1308 else
1309 PrintAndLog("DEBUG: Error - idx: %d",idx);
1310 }
1311 return 0;
1312 }
1313 // Index map
1314 // 0 10 20 30 40 50 60
1315 // | | | | | | |
1316 // 0123456 7 8901234 5 6789012 3 4567890 1 2345678 9 0123456 7 8901234 5 6789012 3
1317 // -----------------------------------------------------------------------------
1318 // 0000000 0 0000000 1 0000000 1 0000000 1 0000000 1 0000000 1 0000000 1 0000000 1
1319 // premable xxxxxxx o xxxxxxx o xxxxxxx o xxxxxxx o xxxxxxx o xxxxxxx o xxxxxxx o
1320
1321 // 64 70 80 90 100 110 120
1322 // | | | | | | |
1323 // 4567890 1 2345678 9 0123456 7 8901234 5 6789012 3 4567890 1 2345678 9 0123456 7
1324 // -----------------------------------------------------------------------------
1325 // 0000000 1 0000000 1 0000000 1 0110111 0 0011000 1 0000001 0 0001100 1 1001010 0
1326 // xxxxxxx o xxxxxxx o xxxxxxx o xswffff o ffffccc o ccccccc o ccccccw o ppppppp o
1327 // |---115---||---------71---------|
1328 // s = format start bit, o = odd parity of last 7 bits
1329 // f = facility code, c = card number
1330 // w = wiegand parity, x = extra space for other formats
1331 // p = unknown checksum
1332 // (26 bit format shown)
1333
1334 //get bytes for checksum calc
1335 uint8_t checksum = bytebits_to_byte(BitStream + idx + 120, 8);
1336 uint8_t csBuff[14] = {0x00};
1337 for (uint8_t i = 0; i < 13; i++){
1338 csBuff[i] = bytebits_to_byte(BitStream + idx + 16 + (i*8), 8);
1339 }
1340 //check checksum calc
1341 //checksum calc thanks to ICEMAN!!
1342 uint32_t checkCS = CRC8Maxim(csBuff,13);
1343
1344 //get raw ID before removing parities
1345 uint32_t rawLo = bytebits_to_byte(BitStream+idx+96,32);
1346 uint32_t rawHi = bytebits_to_byte(BitStream+idx+64,32);
1347 uint32_t rawHi2 = bytebits_to_byte(BitStream+idx+32,32);
1348 uint32_t rawHi3 = bytebits_to_byte(BitStream+idx,32);
1349 setDemodBuf(BitStream,128,idx);
1350
1351 size = removeParity(BitStream, idx+8, 8, 1, 120);
1352 if (size != 105){
1353 if (g_debugMode==1)
1354 PrintAndLog("DEBUG: Error at parity check - tag size does not match Pyramid format, SIZE: %d, IDX: %d, hi3: %x",size, idx, rawHi3);
1355 return 0;
1356 }
1357
1358 // ok valid card found!
1359
1360 // Index map
1361 // 0 10 20 30 40 50 60 70
1362 // | | | | | | | |
1363 // 01234567890123456789012345678901234567890123456789012345678901234567890
1364 // -----------------------------------------------------------------------
1365 // 00000000000000000000000000000000000000000000000000000000000000000000000
1366 // xxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxx
1367
1368 // 71 80 90 100
1369 // | | | |
1370 // 1 2 34567890 1234567890123456 7 8901234
1371 // ---------------------------------------
1372 // 1 1 01110011 0000000001000110 0 1001010
1373 // s w ffffffff cccccccccccccccc w ppppppp
1374 // |--115-| |------71------|
1375 // s = format start bit, o = odd parity of last 7 bits
1376 // f = facility code, c = card number
1377 // w = wiegand parity, x = extra space for other formats
1378 // p = unknown checksum
1379 // (26 bit format shown)
1380
1381 //find start bit to get fmtLen
1382 int j;
1383 for (j=0; j<size; j++){
1384 if(BitStream[j]) break;
1385 }
1386 uint8_t fmtLen = size-j-8;
1387 uint32_t fc = 0;
1388 uint32_t cardnum = 0;
1389 uint32_t code1 = 0;
1390 //uint32_t code2 = 0;
1391 if (fmtLen==26){
1392 fc = bytebits_to_byte(BitStream+73, 8);
1393 cardnum = bytebits_to_byte(BitStream+81, 16);
1394 code1 = bytebits_to_byte(BitStream+72,fmtLen);
1395 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);
1396 } else if (fmtLen==45){
1397 fmtLen=42; //end = 10 bits not 7 like 26 bit fmt
1398 fc = bytebits_to_byte(BitStream+53, 10);
1399 cardnum = bytebits_to_byte(BitStream+63, 32);
1400 PrintAndLog("Pyramid ID Found - BitLength: %d, FC: %d, Card: %d - Raw: %08x%08x%08x%08x", fmtLen, fc, cardnum, rawHi3, rawHi2, rawHi, rawLo);
1401 } else {
1402 cardnum = bytebits_to_byte(BitStream+81, 16);
1403 if (fmtLen>32){
1404 //code1 = bytebits_to_byte(BitStream+(size-fmtLen),fmtLen-32);
1405 //code2 = bytebits_to_byte(BitStream+(size-32),32);
1406 PrintAndLog("Pyramid ID Found - BitLength: %d -unknown BitLength- (%d), Raw: %08x%08x%08x%08x", fmtLen, cardnum, rawHi3, rawHi2, rawHi, rawLo);
1407 } else{
1408 //code1 = bytebits_to_byte(BitStream+(size-fmtLen),fmtLen);
1409 PrintAndLog("Pyramid ID Found - BitLength: %d -unknown BitLength- (%d), Raw: %08x%08x%08x%08x", fmtLen, cardnum, rawHi3, rawHi2, rawHi, rawLo);
1410 }
1411 }
1412 if (checksum == checkCS)
1413 PrintAndLog("Checksum %02x passed", checksum);
1414 else
1415 PrintAndLog("Checksum %02x failed - should have been %02x", checksum, checkCS);
1416
1417 if (g_debugMode){
1418 PrintAndLog("DEBUG: idx: %d, Len: %d, Printing Demod Buffer:", idx, 128);
1419 printDemodBuff();
1420 }
1421 return 1;
1422 }
1423
1424 //by marshmellow
1425 //attempt to psk1 demod graph buffer
1426 int PSKDemod(const char *Cmd, bool verbose)
1427 {
1428 int invert=0;
1429 int clk=0;
1430 int maxErr=100;
1431 sscanf(Cmd, "%i %i %i", &clk, &invert, &maxErr);
1432 if (clk==1){
1433 invert=1;
1434 clk=0;
1435 }
1436 if (invert != 0 && invert != 1) {
1437 if (verbose) PrintAndLog("Invalid argument: %s", Cmd);
1438 return 0;
1439 }
1440 uint8_t BitStream[MAX_GRAPH_TRACE_LEN]={0};
1441 size_t BitLen = getFromGraphBuf(BitStream);
1442 if (BitLen==0) return -1;
1443 uint8_t carrier=countFC(BitStream, BitLen, 0);
1444 if (carrier!=2 && carrier!=4 && carrier!=8){
1445 //invalid carrier
1446 return 0;
1447 }
1448 int errCnt=0;
1449 errCnt = pskRawDemod(BitStream, &BitLen, &clk, &invert);
1450 if (errCnt > maxErr){
1451 if (g_debugMode || verbose) PrintAndLog("Too many errors found, clk: %d, invert: %d, numbits: %d, errCnt: %d",clk,invert,BitLen,errCnt);
1452 return 0;
1453 }
1454 if (errCnt<0|| BitLen<16){ //throw away static - allow 1 and -1 (in case of threshold command first)
1455 if (g_debugMode || verbose) PrintAndLog("no data found, clk: %d, invert: %d, numbits: %d, errCnt: %d",clk,invert,BitLen,errCnt);
1456 return 0;
1457 }
1458 if (verbose || g_debugMode){
1459 PrintAndLog("\nUsing Clock:%d, invert:%d, Bits Found:%d",clk,invert,BitLen);
1460 if (errCnt>0){
1461 PrintAndLog("# Errors during Demoding (shown as 7 in bit stream): %d",errCnt);
1462 }
1463 }
1464 //prime demod buffer for output
1465 setDemodBuf(BitStream,BitLen,0);
1466 return 1;
1467 }
1468
1469 // Indala 26 bit decode
1470 // by marshmellow
1471 // optional arguments - same as CmdpskNRZrawDemod (clock & invert)
1472 int CmdIndalaDecode(const char *Cmd)
1473 {
1474 int ans;
1475 if (strlen(Cmd)>0){
1476 ans = PSKDemod(Cmd, 0);
1477 } else{ //default to RF/32
1478 ans = PSKDemod("32", 0);
1479 }
1480
1481 if (!ans){
1482 if (g_debugMode==1)
1483 PrintAndLog("Error1: %d",ans);
1484 return 0;
1485 }
1486 uint8_t invert=0;
1487 ans = indala26decode(DemodBuffer,(size_t *) &DemodBufferLen, &invert);
1488 if (ans < 1) {
1489 if (g_debugMode==1)
1490 PrintAndLog("Error2: %d",ans);
1491 return -1;
1492 }
1493 char showbits[251]={0x00};
1494 if (invert)
1495 if (g_debugMode==1)
1496 PrintAndLog("Had to invert bits");
1497
1498 //convert UID to HEX
1499 uint32_t uid1, uid2, uid3, uid4, uid5, uid6, uid7;
1500 int idx;
1501 uid1=0;
1502 uid2=0;
1503 PrintAndLog("BitLen: %d",DemodBufferLen);
1504 if (DemodBufferLen==64){
1505 for( idx=0; idx<64; idx++) {
1506 uid1=(uid1<<1)|(uid2>>31);
1507 if (DemodBuffer[idx] == 0) {
1508 uid2=(uid2<<1)|0;
1509 showbits[idx]='0';
1510 } else {
1511 uid2=(uid2<<1)|1;
1512 showbits[idx]='1';
1513 }
1514 }
1515 showbits[idx]='\0';
1516 PrintAndLog("Indala UID=%s (%x%08x)", showbits, uid1, uid2);
1517 }
1518 else {
1519 uid3=0;
1520 uid4=0;
1521 uid5=0;
1522 uid6=0;
1523 uid7=0;
1524 for( idx=0; idx<DemodBufferLen; idx++) {
1525 uid1=(uid1<<1)|(uid2>>31);
1526 uid2=(uid2<<1)|(uid3>>31);
1527 uid3=(uid3<<1)|(uid4>>31);
1528 uid4=(uid4<<1)|(uid5>>31);
1529 uid5=(uid5<<1)|(uid6>>31);
1530 uid6=(uid6<<1)|(uid7>>31);
1531 if (DemodBuffer[idx] == 0) {
1532 uid7=(uid7<<1)|0;
1533 showbits[idx]='0';
1534 }
1535 else {
1536 uid7=(uid7<<1)|1;
1537 showbits[idx]='1';
1538 }
1539 }
1540 showbits[idx]='\0';
1541 PrintAndLog("Indala UID=%s (%x%08x%08x%08x%08x%08x%08x)", showbits, uid1, uid2, uid3, uid4, uid5, uid6, uid7);
1542 }
1543 if (g_debugMode){
1544 PrintAndLog("DEBUG: printing demodbuffer:");
1545 printDemodBuff();
1546 }
1547 return 1;
1548 }
1549
1550 int CmdPSKNexWatch(const char *Cmd)
1551 {
1552 if (!PSKDemod("", false)) return 0;
1553 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};
1554 size_t startIdx = 0, size = DemodBufferLen;
1555 bool invert = false;
1556 if (!preambleSearch(DemodBuffer, preamble, sizeof(preamble), &size, &startIdx)){
1557 // if didn't find preamble try again inverting
1558 if (!PSKDemod("1", false)) return 0;
1559 size = DemodBufferLen;
1560 if (!preambleSearch(DemodBuffer, preamble, sizeof(preamble), &size, &startIdx)) return 0;
1561 invert = true;
1562 }
1563 if (size != 128) return 0;
1564 setDemodBuf(DemodBuffer, size, startIdx+4);
1565 startIdx = 8+32; //4 = extra i added, 8 = preamble, 32 = reserved bits (always 0)
1566 //get ID
1567 uint32_t ID = 0;
1568 for (uint8_t wordIdx=0; wordIdx<4; wordIdx++){
1569 for (uint8_t idx=0; idx<8; idx++){
1570 ID = (ID << 1) | DemodBuffer[startIdx+wordIdx+(idx*4)];
1571 }
1572 }
1573 //parity check (TBD)
1574
1575 //checksum check (TBD)
1576
1577 //output
1578 PrintAndLog("NexWatch ID: %d", ID);
1579 if (invert){
1580 PrintAndLog("Had to Invert - probably NexKey");
1581 for (uint8_t idx=0; idx<size; idx++)
1582 DemodBuffer[idx] ^= 1;
1583 }
1584
1585 CmdPrintDemodBuff("x");
1586 return 1;
1587 }
1588
1589 // by marshmellow
1590 // takes 3 arguments - clock, invert, maxErr as integers
1591 // attempts to demodulate nrz only
1592 // prints binary found and saves in demodbuffer for further commands
1593 int NRZrawDemod(const char *Cmd, bool verbose)
1594 {
1595 int invert=0;
1596 int clk=0;
1597 int maxErr=100;
1598 sscanf(Cmd, "%i %i %i", &clk, &invert, &maxErr);
1599 if (clk==1){
1600 invert=1;
1601 clk=0;
1602 }
1603 if (invert != 0 && invert != 1) {
1604 PrintAndLog("Invalid argument: %s", Cmd);
1605 return 0;
1606 }
1607 uint8_t BitStream[MAX_GRAPH_TRACE_LEN]={0};
1608 size_t BitLen = getFromGraphBuf(BitStream);
1609 if (BitLen==0) return 0;
1610 int errCnt=0;
1611 errCnt = nrzRawDemod(BitStream, &BitLen, &clk, &invert, maxErr);
1612 if (errCnt > maxErr){
1613 if (g_debugMode) PrintAndLog("Too many errors found, clk: %d, invert: %d, numbits: %d, errCnt: %d",clk,invert,BitLen,errCnt);
1614 return 0;
1615 }
1616 if (errCnt<0 || BitLen<16){ //throw away static - allow 1 and -1 (in case of threshold command first)
1617 if (g_debugMode) PrintAndLog("no data found, clk: %d, invert: %d, numbits: %d, errCnt: %d",clk,invert,BitLen,errCnt);
1618 return 0;
1619 }
1620 if (verbose || g_debugMode) PrintAndLog("Tried NRZ Demod using Clock: %d - invert: %d - Bits Found: %d",clk,invert,BitLen);
1621 //prime demod buffer for output
1622 setDemodBuf(BitStream,BitLen,0);
1623
1624 if (errCnt>0 && (verbose || g_debugMode)) PrintAndLog("# Errors during Demoding (shown as 7 in bit stream): %d",errCnt);
1625 if (verbose || g_debugMode) {
1626 PrintAndLog("NRZ demoded bitstream:");
1627 // Now output the bitstream to the scrollback by line of 16 bits
1628 printDemodBuff();
1629 }
1630 return 1;
1631 }
1632
1633 int CmdNRZrawDemod(const char *Cmd)
1634 {
1635 char cmdp = param_getchar(Cmd, 0);
1636 if (strlen(Cmd) > 10 || cmdp == 'h' || cmdp == 'H') {
1637 PrintAndLog("Usage: data rawdemod nr [clock] <0|1> [maxError]");
1638 PrintAndLog(" [set clock as integer] optional, if not set, autodetect.");
1639 PrintAndLog(" <invert>, 1 for invert output");
1640 PrintAndLog(" [set maximum allowed errors], default = 100.");
1641 PrintAndLog("");
1642 PrintAndLog(" sample: data rawdemod nr = demod a nrz/direct tag from GraphBuffer");
1643 PrintAndLog(" : data rawdemod nr 32 = demod a nrz/direct tag from GraphBuffer using a clock of RF/32");
1644 PrintAndLog(" : data rawdemod nr 32 1 = demod a nrz/direct tag from GraphBuffer using a clock of RF/32 and inverting data");
1645 PrintAndLog(" : data rawdemod nr 1 = demod a nrz/direct tag from GraphBuffer while inverting data");
1646 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");
1647 return 0;
1648 }
1649 return NRZrawDemod(Cmd, TRUE);
1650 }
1651
1652 // by marshmellow
1653 // takes 3 arguments - clock, invert, maxErr as integers
1654 // attempts to demodulate psk only
1655 // prints binary found and saves in demodbuffer for further commands
1656 int CmdPSK1rawDemod(const char *Cmd)
1657 {
1658 int ans;
1659 char cmdp = param_getchar(Cmd, 0);
1660 if (strlen(Cmd) > 10 || cmdp == 'h' || cmdp == 'H') {
1661 PrintAndLog("Usage: data rawdemod p1 [clock] <0|1> [maxError]");
1662 PrintAndLog(" [set clock as integer] optional, if not set, autodetect.");
1663 PrintAndLog(" <invert>, 1 for invert output");
1664 PrintAndLog(" [set maximum allowed errors], default = 100.");
1665 PrintAndLog("");
1666 PrintAndLog(" sample: data rawdemod p1 = demod a psk1 tag from GraphBuffer");
1667 PrintAndLog(" : data rawdemod p1 32 = demod a psk1 tag from GraphBuffer using a clock of RF/32");
1668 PrintAndLog(" : data rawdemod p1 32 1 = demod a psk1 tag from GraphBuffer using a clock of RF/32 and inverting data");
1669 PrintAndLog(" : data rawdemod p1 1 = demod a psk1 tag from GraphBuffer while inverting data");
1670 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");
1671 return 0;
1672 }
1673 ans = PSKDemod(Cmd, TRUE);
1674 //output
1675 if (!ans){
1676 if (g_debugMode) PrintAndLog("Error demoding: %d",ans);
1677 return 0;
1678 }
1679
1680 PrintAndLog("PSK1 demoded bitstream:");
1681 // Now output the bitstream to the scrollback by line of 16 bits
1682 printDemodBuff();
1683 return 1;
1684 }
1685
1686 // by marshmellow
1687 // takes same args as cmdpsk1rawdemod
1688 int CmdPSK2rawDemod(const char *Cmd)
1689 {
1690 int ans=0;
1691 char cmdp = param_getchar(Cmd, 0);
1692 if (strlen(Cmd) > 10 || cmdp == 'h' || cmdp == 'H') {
1693 PrintAndLog("Usage: data rawdemod p2 [clock] <0|1> [maxError]");
1694 PrintAndLog(" [set clock as integer] optional, if not set, autodetect.");
1695 PrintAndLog(" <invert>, 1 for invert output");
1696 PrintAndLog(" [set maximum allowed errors], default = 100.");
1697 PrintAndLog("");
1698 PrintAndLog(" sample: data rawdemod p2 = demod a psk2 tag from GraphBuffer, autodetect clock");
1699 PrintAndLog(" : data rawdemod p2 32 = demod a psk2 tag from GraphBuffer using a clock of RF/32");
1700 PrintAndLog(" : data rawdemod p2 32 1 = demod a psk2 tag from GraphBuffer using a clock of RF/32 and inverting output");
1701 PrintAndLog(" : data rawdemod p2 1 = demod a psk2 tag from GraphBuffer, autodetect clock and invert output");
1702 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");
1703 return 0;
1704 }
1705 ans=PSKDemod(Cmd, TRUE);
1706 if (!ans){
1707 if (g_debugMode) PrintAndLog("Error demoding: %d",ans);
1708 return 0;
1709 }
1710 psk1TOpsk2(DemodBuffer, DemodBufferLen);
1711 PrintAndLog("PSK2 demoded bitstream:");
1712 // Now output the bitstream to the scrollback by line of 16 bits
1713 printDemodBuff();
1714 return 1;
1715 }
1716
1717 // by marshmellow - combines all raw demod functions into one menu command
1718 int CmdRawDemod(const char *Cmd)
1719 {
1720 char cmdp = Cmd[0]; //param_getchar(Cmd, 0);
1721
1722 if (strlen(Cmd) > 20 || cmdp == 'h' || cmdp == 'H' || strlen(Cmd)<2) {
1723 PrintAndLog("Usage: data rawdemod [modulation] <help>|<options>");
1724 PrintAndLog(" [modulation] as 2 char, 'ab' for ask/biphase, 'am' for ask/manchester, 'ar' for ask/raw, 'fs' for fsk, ...");
1725 PrintAndLog(" 'nr' for nrz/direct, 'p1' for psk1, 'p2' for psk2");
1726 PrintAndLog(" <help> as 'h', prints the help for the specific modulation");
1727 PrintAndLog(" <options> see specific modulation help for optional parameters");
1728 PrintAndLog("");
1729 PrintAndLog(" sample: data rawdemod fs h = print help specific to fsk demod");
1730 PrintAndLog(" : data rawdemod fs = demod GraphBuffer using: fsk - autodetect");
1731 PrintAndLog(" : data rawdemod ab = demod GraphBuffer using: ask/biphase - autodetect");
1732 PrintAndLog(" : data rawdemod am = demod GraphBuffer using: ask/manchester - autodetect");
1733 PrintAndLog(" : data rawdemod ar = demod GraphBuffer using: ask/raw - autodetect");
1734 PrintAndLog(" : data rawdemod nr = demod GraphBuffer using: nrz/direct - autodetect");
1735 PrintAndLog(" : data rawdemod p1 = demod GraphBuffer using: psk1 - autodetect");
1736 PrintAndLog(" : data rawdemod p2 = demod GraphBuffer using: psk2 - autodetect");
1737 return 0;
1738 }
1739 char cmdp2 = Cmd[1];
1740 int ans = 0;
1741 if (cmdp == 'f' && cmdp2 == 's'){
1742 ans = CmdFSKrawdemod(Cmd+2);
1743 } else if(cmdp == 'a' && cmdp2 == 'b'){
1744 ans = Cmdaskbiphdemod(Cmd+2);
1745 } else if(cmdp == 'a' && cmdp2 == 'm'){
1746 ans = Cmdaskmandemod(Cmd+2);
1747 } else if(cmdp == 'a' && cmdp2 == 'r'){
1748 ans = Cmdaskrawdemod(Cmd+2);
1749 } else if(cmdp == 'n' && cmdp2 == 'r'){
1750 ans = CmdNRZrawDemod(Cmd+2);
1751 } else if(cmdp == 'p' && cmdp2 == '1'){
1752 ans = CmdPSK1rawDemod(Cmd+2);
1753 } else if(cmdp == 'p' && cmdp2 == '2'){
1754 ans = CmdPSK2rawDemod(Cmd+2);
1755 } else {
1756 PrintAndLog("unknown modulation entered - see help ('h') for parameter structure");
1757 }
1758 return ans;
1759 }
1760
1761 int CmdGrid(const char *Cmd)
1762 {
1763 sscanf(Cmd, "%i %i", &PlotGridX, &PlotGridY);
1764 PlotGridXdefault= PlotGridX;
1765 PlotGridYdefault= PlotGridY;
1766 RepaintGraphWindow();
1767 return 0;
1768 }
1769
1770 int CmdHexsamples(const char *Cmd)
1771 {
1772 int i, j;
1773 int requested = 0;
1774 int offset = 0;
1775 char string_buf[25];
1776 char* string_ptr = string_buf;
1777 uint8_t got[BIGBUF_SIZE];
1778
1779 sscanf(Cmd, "%i %i", &requested, &offset);
1780
1781 /* if no args send something */
1782 if (requested == 0) {
1783 requested = 8;
1784 }
1785 if (offset + requested > sizeof(got)) {
1786 PrintAndLog("Tried to read past end of buffer, <bytes> + <offset> > %d", BIGBUF_SIZE);
1787 return 0;
1788 }
1789
1790 GetFromBigBuf(got,requested,offset);
1791 WaitForResponse(CMD_ACK,NULL);
1792
1793 i = 0;
1794 for (j = 0; j < requested; j++) {
1795 i++;
1796 string_ptr += sprintf(string_ptr, "%02x ", got[j]);
1797 if (i == 8) {
1798 *(string_ptr - 1) = '\0'; // remove the trailing space
1799 PrintAndLog("%s", string_buf);
1800 string_buf[0] = '\0';
1801 string_ptr = string_buf;
1802 i = 0;
1803 }
1804 if (j == requested - 1 && string_buf[0] != '\0') { // print any remaining bytes
1805 *(string_ptr - 1) = '\0';
1806 PrintAndLog("%s", string_buf);
1807 string_buf[0] = '\0';
1808 }
1809 }
1810 return 0;
1811 }
1812
1813 int CmdHide(const char *Cmd)
1814 {
1815 HideGraphWindow();
1816 return 0;
1817 }
1818
1819 //zero mean GraphBuffer
1820 int CmdHpf(const char *Cmd)
1821 {
1822 int i;
1823 int accum = 0;
1824
1825 for (i = 10; i < GraphTraceLen; ++i)
1826 accum += GraphBuffer[i];
1827 accum /= (GraphTraceLen - 10);
1828 for (i = 0; i < GraphTraceLen; ++i)
1829 GraphBuffer[i] -= accum;
1830
1831 RepaintGraphWindow();
1832 return 0;
1833 }
1834 typedef struct {
1835 uint8_t * buffer;
1836 uint32_t numbits;
1837 uint32_t position;
1838 }BitstreamOut;
1839
1840 bool _headBit( BitstreamOut *stream)
1841 {
1842 int bytepos = stream->position >> 3; // divide by 8
1843 int bitpos = (stream->position++) & 7; // mask out 00000111
1844 return (*(stream->buffer + bytepos) >> (7-bitpos)) & 1;
1845 }
1846
1847 uint8_t getByte(uint8_t bits_per_sample, BitstreamOut* b)
1848 {
1849 int i;
1850 uint8_t val = 0;
1851 for(i =0 ; i < bits_per_sample; i++)
1852 {
1853 val |= (_headBit(b) << (7-i));
1854 }
1855 return val;
1856 }
1857
1858 int getSamples(const char *Cmd, bool silent)
1859 {
1860 //If we get all but the last byte in bigbuf,
1861 // we don't have to worry about remaining trash
1862 // in the last byte in case the bits-per-sample
1863 // does not line up on byte boundaries
1864
1865 uint8_t got[BIGBUF_SIZE-1] = { 0 };
1866
1867 int n = strtol(Cmd, NULL, 0);
1868
1869 if (n == 0)
1870 n = sizeof(got);
1871
1872 if (n > sizeof(got))
1873 n = sizeof(got);
1874
1875 PrintAndLog("Reading %d bytes from device memory\n", n);
1876 GetFromBigBuf(got,n,0);
1877 PrintAndLog("Data fetched");
1878 UsbCommand response;
1879 WaitForResponse(CMD_ACK, &response);
1880 uint8_t bits_per_sample = 8;
1881
1882 //Old devices without this feature would send 0 at arg[0]
1883 if(response.arg[0] > 0)
1884 {
1885 sample_config *sc = (sample_config *) response.d.asBytes;
1886 PrintAndLog("Samples @ %d bits/smpl, decimation 1:%d ", sc->bits_per_sample
1887 , sc->decimation);
1888 bits_per_sample = sc->bits_per_sample;
1889 }
1890 if(bits_per_sample < 8)
1891 {
1892 PrintAndLog("Unpacking...");
1893 BitstreamOut bout = { got, bits_per_sample * n, 0};
1894 int j =0;
1895 for (j = 0; j * bits_per_sample < n * 8 && j < sizeof(GraphBuffer); j++) {
1896 uint8_t sample = getByte(bits_per_sample, &bout);
1897 GraphBuffer[j] = ((int) sample )- 128;
1898 }
1899 GraphTraceLen = j;
1900 PrintAndLog("Unpacked %d samples" , j );
1901 }else
1902 {
1903 for (int j = 0; j < n; j++) {
1904 GraphBuffer[j] = ((int)got[j]) - 128;
1905 }
1906 GraphTraceLen = n;
1907 }
1908
1909 RepaintGraphWindow();
1910 return 0;
1911 }
1912
1913 int CmdSamples(const char *Cmd)
1914 {
1915 return getSamples(Cmd, false);
1916 }
1917
1918 int CmdTuneSamples(const char *Cmd)
1919 {
1920 int timeout = 0;
1921 printf("\nMeasuring antenna characteristics, please wait...");
1922
1923 UsbCommand c = {CMD_MEASURE_ANTENNA_TUNING};
1924 SendCommand(&c);
1925
1926 UsbCommand resp;
1927 while(!WaitForResponseTimeout(CMD_MEASURED_ANTENNA_TUNING,&resp,1000)) {
1928 timeout++;
1929 printf(".");
1930 if (timeout > 7) {
1931 PrintAndLog("\nNo response from Proxmark. Aborting...");
1932 return 1;
1933 }
1934 }
1935
1936 int peakv, peakf;
1937 int vLf125, vLf134, vHf;
1938 vLf125 = resp.arg[0] & 0xffff;
1939 vLf134 = resp.arg[0] >> 16;
1940 vHf = resp.arg[1] & 0xffff;;
1941 peakf = resp.arg[2] & 0xffff;
1942 peakv = resp.arg[2] >> 16;
1943 PrintAndLog("");
1944 PrintAndLog("# LF antenna: %5.2f V @ 125.00 kHz", vLf125/1000.0);
1945 PrintAndLog("# LF antenna: %5.2f V @ 134.00 kHz", vLf134/1000.0);
1946 PrintAndLog("# LF optimal: %5.2f V @%9.2f kHz", peakv/1000.0, 12000.0/(peakf+1));
1947 PrintAndLog("# HF antenna: %5.2f V @ 13.56 MHz", vHf/1000.0);
1948
1949 #define LF_UNUSABLE_V 2948 // was 2000. Changed due to bugfix in voltage measurements. LF results are now 47% higher.
1950 #define LF_MARGINAL_V 14739 // was 10000. Changed due to bugfix bug in voltage measurements. LF results are now 47% higher.
1951 #define HF_UNUSABLE_V 3167 // was 2000. Changed due to bugfix in voltage measurements. HF results are now 58% higher.
1952 #define HF_MARGINAL_V 7917 // was 5000. Changed due to bugfix in voltage measurements. HF results are now 58% higher.
1953
1954 if (peakv < LF_UNUSABLE_V)
1955 PrintAndLog("# Your LF antenna is unusable.");
1956 else if (peakv < LF_MARGINAL_V)
1957 PrintAndLog("# Your LF antenna is marginal.");
1958 if (vHf < HF_UNUSABLE_V)
1959 PrintAndLog("# Your HF antenna is unusable.");
1960 else if (vHf < HF_MARGINAL_V)
1961 PrintAndLog("# Your HF antenna is marginal.");
1962
1963 if (peakv >= LF_UNUSABLE_V) {
1964 for (int i = 0; i < 256; i++) {
1965 GraphBuffer[i] = resp.d.asBytes[i] - 128;
1966 }
1967 PrintAndLog("Displaying LF tuning graph. Divisor 89 is 134khz, 95 is 125khz.\n");
1968 PrintAndLog("\n");
1969 GraphTraceLen = 256;
1970 ShowGraphWindow();
1971 RepaintGraphWindow();
1972 }
1973
1974 return 0;
1975 }
1976
1977
1978 int CmdLoad(const char *Cmd)
1979 {
1980 char filename[FILE_PATH_SIZE] = {0x00};
1981 int len = 0;
1982
1983 len = strlen(Cmd);
1984 if (len > FILE_PATH_SIZE) len = FILE_PATH_SIZE;
1985 memcpy(filename, Cmd, len);
1986
1987 FILE *f = fopen(filename, "r");
1988 if (!f) {
1989 PrintAndLog("couldn't open '%s'", filename);
1990 return 0;
1991 }
1992
1993 GraphTraceLen = 0;
1994 char line[80];
1995 while (fgets(line, sizeof (line), f)) {
1996 GraphBuffer[GraphTraceLen] = atoi(line);
1997 GraphTraceLen++;
1998 }
1999 fclose(f);
2000 PrintAndLog("loaded %d samples", GraphTraceLen);
2001 RepaintGraphWindow();
2002 return 0;
2003 }
2004
2005 int CmdLtrim(const char *Cmd)
2006 {
2007 int ds = atoi(Cmd);
2008 if (GraphTraceLen<=0) return 0;
2009 for (int i = ds; i < GraphTraceLen; ++i)
2010 GraphBuffer[i-ds] = GraphBuffer[i];
2011 GraphTraceLen -= ds;
2012
2013 RepaintGraphWindow();
2014 return 0;
2015 }
2016
2017 // trim graph to input argument length
2018 int CmdRtrim(const char *Cmd)
2019 {
2020 int ds = atoi(Cmd);
2021
2022 GraphTraceLen = ds;
2023
2024 RepaintGraphWindow();
2025 return 0;
2026 }
2027
2028 int CmdNorm(const char *Cmd)
2029 {
2030 int i;
2031 int max = INT_MIN, min = INT_MAX;
2032
2033 for (i = 10; i < GraphTraceLen; ++i) {
2034 if (GraphBuffer[i] > max)
2035 max = GraphBuffer[i];
2036 if (GraphBuffer[i] < min)
2037 min = GraphBuffer[i];
2038 }
2039
2040 if (max != min) {
2041 for (i = 0; i < GraphTraceLen; ++i) {
2042 GraphBuffer[i] = (GraphBuffer[i] - ((max + min) / 2)) * 256 /
2043 (max - min);
2044 //marshmelow: adjusted *1000 to *256 to make +/- 128 so demod commands still work
2045 }
2046 }
2047 RepaintGraphWindow();
2048 return 0;
2049 }
2050
2051 int CmdPlot(const char *Cmd)
2052 {
2053 ShowGraphWindow();
2054 return 0;
2055 }
2056
2057 int CmdSave(const char *Cmd)
2058 {
2059 char filename[FILE_PATH_SIZE] = {0x00};
2060 int len = 0;
2061
2062 len = strlen(Cmd);
2063 if (len > FILE_PATH_SIZE) len = FILE_PATH_SIZE;
2064 memcpy(filename, Cmd, len);
2065
2066
2067 FILE *f = fopen(filename, "w");
2068 if(!f) {
2069 PrintAndLog("couldn't open '%s'", filename);
2070 return 0;
2071 }
2072 int i;
2073 for (i = 0; i < GraphTraceLen; i++) {
2074 fprintf(f, "%d\n", GraphBuffer[i]);
2075 }
2076 fclose(f);
2077 PrintAndLog("saved to '%s'", Cmd);
2078 return 0;
2079 }
2080
2081 int CmdScale(const char *Cmd)
2082 {
2083 CursorScaleFactor = atoi(Cmd);
2084 if (CursorScaleFactor == 0) {
2085 PrintAndLog("bad, can't have zero scale");
2086 CursorScaleFactor = 1;
2087 }
2088 RepaintGraphWindow();
2089 return 0;
2090 }
2091
2092 int CmdDirectionalThreshold(const char *Cmd)
2093 {
2094 int8_t upThres = param_get8(Cmd, 0);
2095 int8_t downThres = param_get8(Cmd, 1);
2096
2097 printf("Applying Up Threshold: %d, Down Threshold: %d\n", upThres, downThres);
2098
2099 int lastValue = GraphBuffer[0];
2100 GraphBuffer[0] = 0; // Will be changed at the end, but init 0 as we adjust to last samples value if no threshold kicks in.
2101
2102 for (int i = 1; i < GraphTraceLen; ++i) {
2103 // Apply first threshold to samples heading up
2104 if (GraphBuffer[i] >= upThres && GraphBuffer[i] > lastValue)
2105 {
2106 lastValue = GraphBuffer[i]; // Buffer last value as we overwrite it.
2107 GraphBuffer[i] = 1;
2108 }
2109 // Apply second threshold to samples heading down
2110 else if (GraphBuffer[i] <= downThres && GraphBuffer[i] < lastValue)
2111 {
2112 lastValue = GraphBuffer[i]; // Buffer last value as we overwrite it.
2113 GraphBuffer[i] = -1;
2114 }
2115 else
2116 {
2117 lastValue = GraphBuffer[i]; // Buffer last value as we overwrite it.
2118 GraphBuffer[i] = GraphBuffer[i-1];
2119
2120 }
2121 }
2122 GraphBuffer[0] = GraphBuffer[1]; // Aline with first edited sample.
2123 RepaintGraphWindow();
2124 return 0;
2125 }
2126
2127 int CmdZerocrossings(const char *Cmd)
2128 {
2129 // Zero-crossings aren't meaningful unless the signal is zero-mean.
2130 CmdHpf("");
2131
2132 int sign = 1;
2133 int zc = 0;
2134 int lastZc = 0;
2135
2136 for (int i = 0; i < GraphTraceLen; ++i) {
2137 if (GraphBuffer[i] * sign >= 0) {
2138 // No change in sign, reproduce the previous sample count.
2139 zc++;
2140 GraphBuffer[i] = lastZc;
2141 } else {
2142 // Change in sign, reset the sample count.
2143 sign = -sign;
2144 GraphBuffer[i] = lastZc;
2145 if (sign > 0) {
2146 lastZc = zc;
2147 zc = 0;
2148 }
2149 }
2150 }
2151
2152 RepaintGraphWindow();
2153 return 0;
2154 }
2155
2156 static command_t CommandTable[] =
2157 {
2158 {"help", CmdHelp, 1, "This help"},
2159 {"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)"},
2160 {"askem410xdemod", CmdAskEM410xDemod, 1, "[clock] [invert<0|1>] [maxErr] -- Demodulate an EM410x tag from GraphBuffer (args optional)"},
2161 {"askgproxiidemod", CmdG_Prox_II_Demod, 1, "Demodulate a G Prox II tag from GraphBuffer"},
2162 {"autocorr", CmdAutoCorr, 1, "[window length] [g] -- Autocorrelation over window - g to save back to GraphBuffer (overwrite)"},
2163 {"biphaserawdecode",CmdBiphaseDecodeRaw,1, "[offset] [invert<0|1>] [maxErr] -- Biphase decode bin stream in DemodBuffer (offset = 0|1 bits to shift the decode start)"},
2164 {"bitsamples", CmdBitsamples, 0, "Get raw samples as bitstring"},
2165 {"buffclear", CmdBuffClear, 1, "Clear sample buffer and graph window"},
2166 {"dec", CmdDec, 1, "Decimate samples"},
2167 {"detectclock", CmdDetectClockRate, 1, "[modulation] Detect clock rate of wave in GraphBuffer (options: 'a','f','n','p' for ask, fsk, nrz, psk respectively)"},
2168 {"fskawiddemod", CmdFSKdemodAWID, 1, "Demodulate an AWID FSK tag from GraphBuffer"},
2169 //{"fskfcdetect", CmdFSKfcDetect, 1, "Try to detect the Field Clock of an FSK wave"},
2170 {"fskhiddemod", CmdFSKdemodHID, 1, "Demodulate a HID FSK tag from GraphBuffer"},
2171 {"fskiodemod", CmdFSKdemodIO, 1, "Demodulate an IO Prox FSK tag from GraphBuffer"},
2172 {"fskpyramiddemod", CmdFSKdemodPyramid, 1, "Demodulate a Pyramid FSK tag from GraphBuffer"},
2173 {"fskparadoxdemod", CmdFSKdemodParadox, 1, "Demodulate a Paradox FSK tag from GraphBuffer"},
2174 {"getbitstream", CmdGetBitStream, 1, "Convert GraphBuffer's >=1 values to 1 and <1 to 0"},
2175 {"grid", CmdGrid, 1, "<x> <y> -- overlay grid on graph window, use zero value to turn off either"},
2176 {"hexsamples", CmdHexsamples, 0, "<bytes> [<offset>] -- Dump big buffer as hex bytes"},
2177 {"hide", CmdHide, 1, "Hide graph window"},
2178 {"hpf", CmdHpf, 1, "Remove DC offset from trace"},
2179 {"load", CmdLoad, 1, "<filename> -- Load trace (to graph window"},
2180 {"ltrim", CmdLtrim, 1, "<samples> -- Trim samples from left of trace"},
2181 {"rtrim", CmdRtrim, 1, "<location to end trace> -- Trim samples from right of trace"},
2182 {"manrawdecode", Cmdmandecoderaw, 1, "[invert] [maxErr] -- Manchester decode binary stream in DemodBuffer"},
2183 {"norm", CmdNorm, 1, "Normalize max/min to +/-128"},
2184 {"plot", CmdPlot, 1, "Show graph window (hit 'h' in window for keystroke help)"},
2185 {"printdemodbuffer",CmdPrintDemodBuff, 1, "[x] -- print the data in the DemodBuffer - 'x' for hex output"},
2186 {"pskindalademod", CmdIndalaDecode, 1, "[clock] [invert<0|1>] -- Demodulate an indala tag (PSK1) from GraphBuffer (args optional)"},
2187 {"psknexwatchdemod",CmdPSKNexWatch, 1, "Demodulate a NexWatch tag (nexkey, quadrakey) (PSK1) from GraphBuffer"},
2188 {"rawdemod", CmdRawDemod, 1, "[modulation] ... <options> -see help (h option) -- Demodulate the data in the GraphBuffer and output binary"},
2189 {"samples", CmdSamples, 0, "[512 - 40000] -- Get raw samples for graph window (GraphBuffer)"},
2190 {"save", CmdSave, 1, "<filename> -- Save trace (from graph window)"},
2191 {"scale", CmdScale, 1, "<int> -- Set cursor display scale"},
2192 {"setdebugmode", CmdSetDebugMode, 1, "<0|1> -- Turn on or off Debugging Mode for demods"},
2193 {"shiftgraphzero", CmdGraphShiftZero, 1, "<shift> -- Shift 0 for Graphed wave + or - shift value"},
2194 {"dirthreshold", CmdDirectionalThreshold, 1, "<thres up> <thres down> -- Max rising higher up-thres/ Min falling lower down-thres, keep rest as prev."},
2195 {"tune", CmdTuneSamples, 0, "Get hw tune samples for graph window"},
2196 {"undec", CmdUndec, 1, "Un-decimate samples by 2"},
2197 {"zerocrossings", CmdZerocrossings, 1, "Count time between zero-crossings"},
2198 {NULL, NULL, 0, NULL}
2199 };
2200
2201 int CmdData(const char *Cmd)
2202 {
2203 CmdsParse(CommandTable, Cmd);
2204 return 0;
2205 }
2206
2207 int CmdHelp(const char *Cmd)
2208 {
2209 CmdsHelp(CommandTable);
2210 return 0;
2211 }
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