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add l/h option to hw tune and optimize order of tuning
[proxmark3-svn] / client / cmddata.c
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 #include "crc16.h"
27 #include "loclass/cipherutils.h"
28
29 uint8_t DemodBuffer[MAX_DEMOD_BUF_LEN];
30 uint8_t g_debugMode=0;
31 size_t DemodBufferLen=0;
32 static int CmdHelp(const char *Cmd);
33
34 //set the demod buffer with given array of binary (one bit per byte)
35 //by marshmellow
36 void setDemodBuf(uint8_t *buff, size_t size, size_t startIdx)
37 {
38 if (buff == NULL)
39 return;
40
41 if ( size >= MAX_DEMOD_BUF_LEN)
42 size = MAX_DEMOD_BUF_LEN;
43
44 size_t i = 0;
45 for (; i < size; i++){
46 DemodBuffer[i]=buff[startIdx++];
47 }
48 DemodBufferLen=size;
49 return;
50 }
51
52 int CmdSetDebugMode(const char *Cmd)
53 {
54 int demod=0;
55 sscanf(Cmd, "%i", &demod);
56 g_debugMode=(uint8_t)demod;
57 return 1;
58 }
59
60 int usage_data_printdemodbuf(){
61 PrintAndLog("Usage: data printdemodbuffer x o <offset> l <length>");
62 PrintAndLog("Options: ");
63 PrintAndLog(" h This help");
64 PrintAndLog(" x output in hex (omit for binary output)");
65 PrintAndLog(" o <offset> enter offset in # of bits");
66 PrintAndLog(" l <length> enter length to print in # of bits or hex characters respectively");
67 return 0;
68 }
69
70 //by marshmellow
71 void printDemodBuff(void)
72 {
73 int bitLen = DemodBufferLen;
74 if (bitLen<1) {
75 PrintAndLog("no bits found in demod buffer");
76 return;
77 }
78 if (bitLen>512) bitLen=512; //max output to 512 bits if we have more - should be plenty
79
80 char *bin = sprint_bin_break(DemodBuffer,bitLen,16);
81 PrintAndLog("%s",bin);
82
83 return;
84 }
85
86 int CmdPrintDemodBuff(const char *Cmd)
87 {
88 char hex[512]={0x00};
89 bool hexMode = false;
90 bool errors = false;
91 uint32_t offset = 0; //could be size_t but no param_get16...
92 uint32_t length = 512;
93 char cmdp = 0;
94 while(param_getchar(Cmd, cmdp) != 0x00)
95 {
96 switch(param_getchar(Cmd, cmdp))
97 {
98 case 'h':
99 case 'H':
100 return usage_data_printdemodbuf();
101 case 'x':
102 case 'X':
103 hexMode = true;
104 cmdp++;
105 break;
106 case 'o':
107 case 'O':
108 offset = param_get32ex(Cmd, cmdp+1, 0, 10);
109 if (!offset) errors = true;
110 cmdp += 2;
111 break;
112 case 'l':
113 case 'L':
114 length = param_get32ex(Cmd, cmdp+1, 512, 10);
115 if (!length) errors = true;
116 cmdp += 2;
117 break;
118 default:
119 PrintAndLog("Unknown parameter '%c'", param_getchar(Cmd, cmdp));
120 errors = true;
121 break;
122 }
123 if(errors) break;
124 }
125 //Validations
126 if(errors) return usage_data_printdemodbuf();
127 length = (length > (DemodBufferLen-offset)) ? DemodBufferLen-offset : length;
128 int numBits = (length) & 0x00FFC; //make sure we don't exceed our string
129
130 if (hexMode){
131 char *buf = (char *) (DemodBuffer + offset);
132 numBits = (numBits > sizeof(hex)) ? sizeof(hex) : numBits;
133 numBits = binarraytohex(hex, buf, numBits);
134 if (numBits==0) return 0;
135 PrintAndLog("DemodBuffer: %s",hex);
136 } else {
137 PrintAndLog("DemodBuffer:\n%s", sprint_bin_break(DemodBuffer+offset,numBits,16));
138 }
139 return 1;
140 }
141
142 //by marshmellow
143 //this function strictly converts >1 to 1 and <1 to 0 for each sample in the graphbuffer
144 int CmdGetBitStream(const char *Cmd)
145 {
146 int i;
147 CmdHpf(Cmd);
148 for (i = 0; i < GraphTraceLen; i++) {
149 if (GraphBuffer[i] >= 1) {
150 GraphBuffer[i] = 1;
151 } else {
152 GraphBuffer[i] = 0;
153 }
154 }
155 RepaintGraphWindow();
156 return 0;
157 }
158
159 //by marshmellow
160 //print 64 bit EM410x ID in multiple formats
161 void printEM410x(uint32_t hi, uint64_t id)
162 {
163 if (id || hi){
164 uint64_t iii=1;
165 uint64_t id2lo=0;
166 uint32_t ii=0;
167 uint32_t i=0;
168 for (ii=5; ii>0;ii--){
169 for (i=0;i<8;i++){
170 id2lo=(id2lo<<1LL) | ((id & (iii << (i+((ii-1)*8)))) >> (i+((ii-1)*8)));
171 }
172 }
173 if (hi){
174 //output 88 bit em id
175 PrintAndLog("\nEM TAG ID : %06X%016llX", hi, id);
176 } else{
177 //output 40 bit em id
178 PrintAndLog("\nEM TAG ID : %010llX", id);
179 PrintAndLog("Unique TAG ID : %010llX", id2lo);
180 PrintAndLog("\nPossible de-scramble patterns");
181 PrintAndLog("HoneyWell IdentKey {");
182 PrintAndLog("DEZ 8 : %08lld",id & 0xFFFFFF);
183 PrintAndLog("DEZ 10 : %010lld",id & 0xFFFFFFFF);
184 PrintAndLog("DEZ 5.5 : %05lld.%05lld",(id>>16LL) & 0xFFFF,(id & 0xFFFF));
185 PrintAndLog("DEZ 3.5A : %03lld.%05lld",(id>>32ll),(id & 0xFFFF));
186 PrintAndLog("DEZ 3.5B : %03lld.%05lld",(id & 0xFF000000) >> 24,(id & 0xFFFF));
187 PrintAndLog("DEZ 3.5C : %03lld.%05lld",(id & 0xFF0000) >> 16,(id & 0xFFFF));
188 PrintAndLog("DEZ 14/IK2 : %014lld",id);
189 PrintAndLog("DEZ 15/IK3 : %015lld",id2lo);
190 PrintAndLog("DEZ 20/ZK : %02lld%02lld%02lld%02lld%02lld%02lld%02lld%02lld%02lld%02lld",
191 (id2lo & 0xf000000000) >> 36,
192 (id2lo & 0x0f00000000) >> 32,
193 (id2lo & 0x00f0000000) >> 28,
194 (id2lo & 0x000f000000) >> 24,
195 (id2lo & 0x0000f00000) >> 20,
196 (id2lo & 0x00000f0000) >> 16,
197 (id2lo & 0x000000f000) >> 12,
198 (id2lo & 0x0000000f00) >> 8,
199 (id2lo & 0x00000000f0) >> 4,
200 (id2lo & 0x000000000f)
201 );
202 uint64_t paxton = (((id>>32) << 24) | (id & 0xffffff)) + 0x143e00;
203 PrintAndLog("}\nOther : %05lld_%03lld_%08lld",(id&0xFFFF),((id>>16LL) & 0xFF),(id & 0xFFFFFF));
204 PrintAndLog("Pattern Paxton : %lld [0x%llX]", paxton, paxton);
205
206 uint32_t p1id = (id & 0xFFFFFF);
207 uint8_t arr[32] = {0x00};
208 int i =0;
209 int j = 23;
210 for (; i < 24; ++i, --j ){
211 arr[i] = (p1id >> i) & 1;
212 }
213
214 uint32_t p1 = 0;
215
216 p1 |= arr[23] << 21;
217 p1 |= arr[22] << 23;
218 p1 |= arr[21] << 20;
219 p1 |= arr[20] << 22;
220
221 p1 |= arr[19] << 18;
222 p1 |= arr[18] << 16;
223 p1 |= arr[17] << 19;
224 p1 |= arr[16] << 17;
225
226 p1 |= arr[15] << 13;
227 p1 |= arr[14] << 15;
228 p1 |= arr[13] << 12;
229 p1 |= arr[12] << 14;
230
231 p1 |= arr[11] << 6;
232 p1 |= arr[10] << 2;
233 p1 |= arr[9] << 7;
234 p1 |= arr[8] << 1;
235
236 p1 |= arr[7] << 0;
237 p1 |= arr[6] << 8;
238 p1 |= arr[5] << 11;
239 p1 |= arr[4] << 3;
240
241 p1 |= arr[3] << 10;
242 p1 |= arr[2] << 4;
243 p1 |= arr[1] << 5;
244 p1 |= arr[0] << 9;
245 PrintAndLog("Pattern 1 : %d [0x%X]", p1, p1);
246
247 uint16_t sebury1 = id & 0xFFFF;
248 uint8_t sebury2 = (id >> 16) & 0x7F;
249 uint32_t sebury3 = id & 0x7FFFFF;
250 PrintAndLog("Pattern Sebury : %d %d %d [0x%X 0x%X 0x%X]", sebury1, sebury2, sebury3, sebury1, sebury2, sebury3);
251 }
252 }
253 return;
254 }
255
256 int AskEm410xDecode(bool verbose, uint32_t *hi, uint64_t *lo )
257 {
258 size_t idx = 0;
259 size_t BitLen = DemodBufferLen;
260 uint8_t BitStream[MAX_GRAPH_TRACE_LEN]={0};
261 memcpy(BitStream, DemodBuffer, BitLen);
262 if (Em410xDecode(BitStream, &BitLen, &idx, hi, lo)){
263 //set GraphBuffer for clone or sim command
264 setDemodBuf(BitStream, BitLen, idx);
265 if (g_debugMode){
266 PrintAndLog("DEBUG: idx: %d, Len: %d, Printing Demod Buffer:", idx, BitLen);
267 printDemodBuff();
268 }
269 if (verbose){
270 PrintAndLog("EM410x pattern found: ");
271 printEM410x(*hi, *lo);
272 }
273 return 1;
274 }
275 return 0;
276 }
277
278 int AskEm410xDemod(const char *Cmd, uint32_t *hi, uint64_t *lo, bool verbose)
279 {
280 bool st = TRUE;
281 if (!ASKDemod_ext(Cmd, FALSE, FALSE, 1, &st)) return 0;
282 return AskEm410xDecode(verbose, hi, lo);
283 }
284
285 //by marshmellow
286 //takes 3 arguments - clock, invert and maxErr as integers
287 //attempts to demodulate ask while decoding manchester
288 //prints binary found and saves in graphbuffer for further commands
289 int CmdAskEM410xDemod(const char *Cmd)
290 {
291 char cmdp = param_getchar(Cmd, 0);
292 if (strlen(Cmd) > 10 || cmdp == 'h' || cmdp == 'H') {
293 PrintAndLog("Usage: data askem410xdemod [clock] <0|1> [maxError]");
294 PrintAndLog(" [set clock as integer] optional, if not set, autodetect.");
295 PrintAndLog(" <invert>, 1 for invert output");
296 PrintAndLog(" [set maximum allowed errors], default = 100.");
297 PrintAndLog("");
298 PrintAndLog(" sample: data askem410xdemod = demod an EM410x Tag ID from GraphBuffer");
299 PrintAndLog(" : data askem410xdemod 32 = demod an EM410x Tag ID from GraphBuffer using a clock of RF/32");
300 PrintAndLog(" : data askem410xdemod 32 1 = demod an EM410x Tag ID from GraphBuffer using a clock of RF/32 and inverting data");
301 PrintAndLog(" : data askem410xdemod 1 = demod an EM410x Tag ID from GraphBuffer while inverting data");
302 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");
303 return 0;
304 }
305 uint64_t lo = 0;
306 uint32_t hi = 0;
307 return AskEm410xDemod(Cmd, &hi, &lo, true);
308 }
309
310 //by marshmellow
311 //Cmd Args: Clock, invert, maxErr, maxLen as integers and amplify as char == 'a'
312 // (amp may not be needed anymore)
313 //verbose will print results and demoding messages
314 //emSearch will auto search for EM410x format in bitstream
315 //askType switches decode: ask/raw = 0, ask/manchester = 1
316 int ASKDemod_ext(const char *Cmd, bool verbose, bool emSearch, uint8_t askType, bool *stCheck) {
317 int invert=0;
318 int clk=0;
319 int maxErr=100;
320 int maxLen=0;
321 uint8_t askAmp = 0;
322 char amp = param_getchar(Cmd, 0);
323 uint8_t BitStream[MAX_GRAPH_TRACE_LEN]={0};
324 sscanf(Cmd, "%i %i %i %i %c", &clk, &invert, &maxErr, &maxLen, &amp);
325 if (!maxLen) maxLen = BIGBUF_SIZE;
326 if (invert != 0 && invert != 1) {
327 PrintAndLog("Invalid argument: %s", Cmd);
328 return 0;
329 }
330 if (clk==1){
331 invert=1;
332 clk=0;
333 }
334 if (amp == 'a' || amp == 'A') askAmp=1;
335 size_t BitLen = getFromGraphBuf(BitStream);
336 if (g_debugMode) PrintAndLog("DEBUG: Bitlen from grphbuff: %d",BitLen);
337 if (BitLen < 255) return 0;
338 if (maxLen < BitLen && maxLen != 0) BitLen = maxLen;
339 int foundclk = 0;
340 bool st = false;
341 if (*stCheck) st = DetectST(BitStream, &BitLen, &foundclk);
342 if (st) {
343 *stCheck = st;
344 clk = (clk == 0) ? foundclk : clk;
345 if (verbose || g_debugMode) PrintAndLog("\nFound Sequence Terminator");
346 }
347 int errCnt = askdemod(BitStream, &BitLen, &clk, &invert, maxErr, askAmp, askType);
348 if (errCnt<0 || BitLen<16){ //if fatal error (or -1)
349 if (g_debugMode) PrintAndLog("DEBUG: no data found %d, errors:%d, bitlen:%d, clock:%d",errCnt,invert,BitLen,clk);
350 return 0;
351 }
352 if (errCnt > maxErr){
353 if (g_debugMode) PrintAndLog("DEBUG: Too many errors found, errors:%d, bits:%d, clock:%d",errCnt, BitLen, clk);
354 return 0;
355 }
356 if (verbose || g_debugMode) PrintAndLog("\nUsing Clock:%d, Invert:%d, Bits Found:%d",clk,invert,BitLen);
357
358 //output
359 setDemodBuf(BitStream,BitLen,0);
360 if (verbose || g_debugMode){
361 if (errCnt>0) PrintAndLog("# Errors during Demoding (shown as 7 in bit stream): %d",errCnt);
362 if (askType) PrintAndLog("ASK/Manchester - Clock: %d - Decoded bitstream:",clk);
363 else PrintAndLog("ASK/Raw - Clock: %d - Decoded bitstream:",clk);
364 // Now output the bitstream to the scrollback by line of 16 bits
365 printDemodBuff();
366
367 }
368 uint64_t lo = 0;
369 uint32_t hi = 0;
370 if (emSearch){
371 AskEm410xDecode(true, &hi, &lo);
372 }
373 return 1;
374 }
375 int ASKDemod(const char *Cmd, bool verbose, bool emSearch, uint8_t askType) {
376 bool st = false;
377 return ASKDemod_ext(Cmd, verbose, emSearch, askType, &st);
378 }
379
380 //by marshmellow
381 //takes 5 arguments - clock, invert, maxErr, maxLen as integers and amplify as char == 'a'
382 //attempts to demodulate ask while decoding manchester
383 //prints binary found and saves in graphbuffer for further commands
384 int Cmdaskmandemod(const char *Cmd)
385 {
386 char cmdp = param_getchar(Cmd, 0);
387 if (strlen(Cmd) > 25 || cmdp == 'h' || cmdp == 'H') {
388 PrintAndLog("Usage: data rawdemod am <s> [clock] <invert> [maxError] [maxLen] [amplify]");
389 PrintAndLog(" ['s'] optional, check for Sequence Terminator");
390 PrintAndLog(" [set clock as integer] optional, if not set, autodetect");
391 PrintAndLog(" <invert>, 1 to invert output");
392 PrintAndLog(" [set maximum allowed errors], default = 100");
393 PrintAndLog(" [set maximum Samples to read], default = 32768 (512 bits at rf/64)");
394 PrintAndLog(" <amplify>, 'a' to attempt demod with ask amplification, default = no amp");
395 PrintAndLog("");
396 PrintAndLog(" sample: data rawdemod am = demod an ask/manchester tag from GraphBuffer");
397 PrintAndLog(" : data rawdemod am 32 = demod an ask/manchester tag from GraphBuffer using a clock of RF/32");
398 PrintAndLog(" : data rawdemod am 32 1 = demod an ask/manchester tag from GraphBuffer using a clock of RF/32 and inverting data");
399 PrintAndLog(" : data rawdemod am 1 = demod an ask/manchester tag from GraphBuffer while inverting data");
400 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");
401 return 0;
402 }
403 bool st = TRUE;
404 if (Cmd[0]=='s')
405 return ASKDemod_ext(Cmd++, TRUE, TRUE, 1, &st);
406 else if (Cmd[1] == 's')
407 return ASKDemod_ext(Cmd+=2, TRUE, TRUE, 1, &st);
408 else
409 return ASKDemod(Cmd, TRUE, TRUE, 1);
410 }
411
412 //by marshmellow
413 //manchester decode
414 //stricktly take 10 and 01 and convert to 0 and 1
415 int Cmdmandecoderaw(const char *Cmd)
416 {
417 int i =0;
418 int errCnt=0;
419 size_t size=0;
420 int invert=0;
421 int maxErr = 20;
422 char cmdp = param_getchar(Cmd, 0);
423 if (strlen(Cmd) > 5 || cmdp == 'h' || cmdp == 'H') {
424 PrintAndLog("Usage: data manrawdecode [invert] [maxErr]");
425 PrintAndLog(" Takes 10 and 01 and converts to 0 and 1 respectively");
426 PrintAndLog(" --must have binary sequence in demodbuffer (run data askrawdemod first)");
427 PrintAndLog(" [invert] invert output");
428 PrintAndLog(" [maxErr] set number of errors allowed (default = 20)");
429 PrintAndLog("");
430 PrintAndLog(" sample: data manrawdecode = decode manchester bitstream from the demodbuffer");
431 return 0;
432 }
433 if (DemodBufferLen==0) return 0;
434 uint8_t BitStream[MAX_GRAPH_TRACE_LEN]={0};
435 int high=0,low=0;
436 for (;i<DemodBufferLen;++i){
437 if (DemodBuffer[i]>high) high=DemodBuffer[i];
438 else if(DemodBuffer[i]<low) low=DemodBuffer[i];
439 BitStream[i]=DemodBuffer[i];
440 }
441 if (high>7 || low <0 ){
442 PrintAndLog("Error: please raw demod the wave first then manchester raw decode");
443 return 0;
444 }
445
446 sscanf(Cmd, "%i %i", &invert, &maxErr);
447 size=i;
448 errCnt=manrawdecode(BitStream, &size, invert);
449 if (errCnt>=maxErr){
450 PrintAndLog("Too many errors: %d",errCnt);
451 return 0;
452 }
453 PrintAndLog("Manchester Decoded - # errors:%d - data:",errCnt);
454 PrintAndLog("%s", sprint_bin_break(BitStream, size, 16));
455 if (errCnt==0){
456 uint64_t id = 0;
457 uint32_t hi = 0;
458 size_t idx=0;
459 if (Em410xDecode(BitStream, &size, &idx, &hi, &id)){
460 //need to adjust to set bitstream back to manchester encoded data
461 //setDemodBuf(BitStream, size, idx);
462
463 printEM410x(hi, id);
464 }
465 }
466 return 1;
467 }
468
469 //by marshmellow
470 //biphase decode
471 //take 01 or 10 = 0 and 11 or 00 = 1
472 //takes 2 arguments "offset" default = 0 if 1 it will shift the decode by one bit
473 // and "invert" default = 0 if 1 it will invert output
474 // the argument offset allows us to manually shift if the output is incorrect - [EDIT: now auto detects]
475 int CmdBiphaseDecodeRaw(const char *Cmd)
476 {
477 size_t size=0;
478 int offset=0, invert=0, maxErr=20, errCnt=0;
479 char cmdp = param_getchar(Cmd, 0);
480 if (strlen(Cmd) > 3 || cmdp == 'h' || cmdp == 'H') {
481 PrintAndLog("Usage: data biphaserawdecode [offset] [invert] [maxErr]");
482 PrintAndLog(" Converts 10 or 01 to 1 and 11 or 00 to 0");
483 PrintAndLog(" --must have binary sequence in demodbuffer (run data askrawdemod first)");
484 PrintAndLog(" --invert for Conditional Dephase Encoding (CDP) AKA Differential Manchester");
485 PrintAndLog("");
486 PrintAndLog(" [offset <0|1>], set to 0 not to adjust start position or to 1 to adjust decode start position");
487 PrintAndLog(" [invert <0|1>], set to 1 to invert output");
488 PrintAndLog(" [maxErr int], set max errors tolerated - default=20");
489 PrintAndLog("");
490 PrintAndLog(" sample: data biphaserawdecode = decode biphase bitstream from the demodbuffer");
491 PrintAndLog(" sample: data biphaserawdecode 1 1 = decode biphase bitstream from the demodbuffer, set offset, and invert output");
492 return 0;
493 }
494 sscanf(Cmd, "%i %i %i", &offset, &invert, &maxErr);
495 if (DemodBufferLen==0){
496 PrintAndLog("DemodBuffer Empty - run 'data rawdemod ar' first");
497 return 0;
498 }
499 uint8_t BitStream[MAX_GRAPH_TRACE_LEN]={0};
500 memcpy(BitStream, DemodBuffer, DemodBufferLen);
501 size = DemodBufferLen;
502 errCnt=BiphaseRawDecode(BitStream, &size, offset, invert);
503 if (errCnt<0){
504 PrintAndLog("Error during decode:%d", errCnt);
505 return 0;
506 }
507 if (errCnt>maxErr){
508 PrintAndLog("Too many errors attempting to decode: %d",errCnt);
509 return 0;
510 }
511
512 if (errCnt>0){
513 PrintAndLog("# Errors found during Demod (shown as 7 in bit stream): %d",errCnt);
514 }
515 PrintAndLog("Biphase Decoded using offset: %d - # invert:%d - data:",offset,invert);
516 PrintAndLog("%s", sprint_bin_break(BitStream, size, 16));
517
518 if (offset) setDemodBuf(DemodBuffer,DemodBufferLen-offset, offset); //remove first bit from raw demod
519 return 1;
520 }
521
522 //by marshmellow
523 // - ASK Demod then Biphase decode GraphBuffer samples
524 int ASKbiphaseDemod(const char *Cmd, bool verbose)
525 {
526 //ask raw demod GraphBuffer first
527 int offset=0, clk=0, invert=0, maxErr=0;
528 sscanf(Cmd, "%i %i %i %i", &offset, &clk, &invert, &maxErr);
529
530 uint8_t BitStream[MAX_DEMOD_BUF_LEN];
531 size_t size = getFromGraphBuf(BitStream);
532 //invert here inverts the ask raw demoded bits which has no effect on the demod, but we need the pointer
533 int errCnt = askdemod(BitStream, &size, &clk, &invert, maxErr, 0, 0);
534 if ( errCnt < 0 || errCnt > maxErr ) {
535 if (g_debugMode) PrintAndLog("DEBUG: no data or error found %d, clock: %d", errCnt, clk);
536 return 0;
537 }
538
539 //attempt to Biphase decode BitStream
540 errCnt = BiphaseRawDecode(BitStream, &size, offset, invert);
541 if (errCnt < 0){
542 if (g_debugMode || verbose) PrintAndLog("Error BiphaseRawDecode: %d", errCnt);
543 return 0;
544 }
545 if (errCnt > maxErr) {
546 if (g_debugMode || verbose) PrintAndLog("Error BiphaseRawDecode too many errors: %d", errCnt);
547 return 0;
548 }
549 //success set DemodBuffer and return
550 setDemodBuf(BitStream, size, 0);
551 if (g_debugMode || verbose){
552 PrintAndLog("Biphase Decoded using offset: %d - clock: %d - # errors:%d - data:",offset,clk,errCnt);
553 printDemodBuff();
554 }
555 return 1;
556 }
557 //by marshmellow - see ASKbiphaseDemod
558 int Cmdaskbiphdemod(const char *Cmd)
559 {
560 char cmdp = param_getchar(Cmd, 0);
561 if (strlen(Cmd) > 25 || cmdp == 'h' || cmdp == 'H') {
562 PrintAndLog("Usage: data rawdemod ab [offset] [clock] <invert> [maxError] [maxLen] <amplify>");
563 PrintAndLog(" [offset], offset to begin biphase, default=0");
564 PrintAndLog(" [set clock as integer] optional, if not set, autodetect");
565 PrintAndLog(" <invert>, 1 to invert output");
566 PrintAndLog(" [set maximum allowed errors], default = 100");
567 PrintAndLog(" [set maximum Samples to read], default = 32768 (512 bits at rf/64)");
568 PrintAndLog(" <amplify>, 'a' to attempt demod with ask amplification, default = no amp");
569 PrintAndLog(" NOTE: <invert> can be entered as second or third argument");
570 PrintAndLog(" NOTE: <amplify> can be entered as first, second or last argument");
571 PrintAndLog(" NOTE: any other arg must have previous args set to work");
572 PrintAndLog("");
573 PrintAndLog(" NOTE: --invert for Conditional Dephase Encoding (CDP) AKA Differential Manchester");
574 PrintAndLog("");
575 PrintAndLog(" sample: data rawdemod ab = demod an ask/biph tag from GraphBuffer");
576 PrintAndLog(" : data rawdemod ab 0 a = demod an ask/biph tag from GraphBuffer, amplified");
577 PrintAndLog(" : data rawdemod ab 1 32 = demod an ask/biph tag from GraphBuffer using an offset of 1 and a clock of RF/32");
578 PrintAndLog(" : data rawdemod ab 0 32 1 = demod an ask/biph tag from GraphBuffer using a clock of RF/32 and inverting data");
579 PrintAndLog(" : data rawdemod ab 0 1 = demod an ask/biph tag from GraphBuffer while inverting data");
580 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");
581 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");
582 return 0;
583 }
584 return ASKbiphaseDemod(Cmd, TRUE);
585 }
586
587 //by marshmellow
588 //attempts to demodulate and identify a G_Prox_II verex/chubb card
589 //WARNING: if it fails during some points it will destroy the DemodBuffer data
590 // but will leave the GraphBuffer intact.
591 //if successful it will push askraw data back to demod buffer ready for emulation
592 int CmdG_Prox_II_Demod(const char *Cmd)
593 {
594 if (!ASKbiphaseDemod(Cmd, FALSE)){
595 if (g_debugMode) PrintAndLog("ASKbiphaseDemod failed 1st try");
596 return 0;
597 }
598 size_t size = DemodBufferLen;
599 //call lfdemod.c demod for gProxII
600 int ans = gProxII_Demod(DemodBuffer, &size);
601 if (ans < 0){
602 if (g_debugMode) PrintAndLog("Error gProxII_Demod");
603 return 0;
604 }
605 //got a good demod
606 uint32_t ByteStream[65] = {0x00};
607 uint8_t xorKey=0;
608 uint8_t keyCnt=0;
609 uint8_t bitCnt=0;
610 uint8_t ByteCnt=0;
611 size_t startIdx = ans + 6; //start after preamble
612 for (size_t idx = 0; idx<size-6; idx++){
613 if ((idx+1) % 5 == 0){
614 //spacer bit - should be 0
615 if (DemodBuffer[startIdx+idx] != 0) {
616 if (g_debugMode) PrintAndLog("Error spacer not 0: %u, pos: %u", (unsigned int)DemodBuffer[startIdx+idx],(unsigned int)(startIdx+idx));
617 return 0;
618 }
619 continue;
620 }
621 if (keyCnt<8){ //lsb first
622 xorKey = xorKey | (DemodBuffer[startIdx+idx]<<keyCnt);
623 keyCnt++;
624 if (keyCnt==8 && g_debugMode) PrintAndLog("xorKey Found: %02x", (unsigned int)xorKey);
625 continue;
626 }
627 //lsb first
628 ByteStream[ByteCnt] = ByteStream[ByteCnt] | (DemodBuffer[startIdx+idx]<<bitCnt);
629 bitCnt++;
630 if (bitCnt % 8 == 0){
631 if (g_debugMode) PrintAndLog("byte %u: %02x", (unsigned int)ByteCnt, ByteStream[ByteCnt]);
632 bitCnt=0;
633 ByteCnt++;
634 }
635 }
636 for (uint8_t i = 0; i < ByteCnt; i++){
637 ByteStream[i] ^= xorKey; //xor
638 if (g_debugMode) PrintAndLog("byte %u after xor: %02x", (unsigned int)i, ByteStream[i]);
639 }
640 //now ByteStream contains 64 bytes of decrypted raw tag data
641 //
642 uint8_t fmtLen = ByteStream[0]>>2;
643 uint32_t FC = 0;
644 uint32_t Card = 0;
645 uint32_t raw1 = bytebits_to_byte(DemodBuffer+ans,32);
646 uint32_t raw2 = bytebits_to_byte(DemodBuffer+ans+32, 32);
647 uint32_t raw3 = bytebits_to_byte(DemodBuffer+ans+64, 32);
648
649 if (fmtLen==36){
650 FC = ((ByteStream[3] & 0x7F)<<7) | (ByteStream[4]>>1);
651 Card = ((ByteStream[4]&1)<<19) | (ByteStream[5]<<11) | (ByteStream[6]<<3) | (ByteStream[7]>>5);
652 PrintAndLog("G-Prox-II Found: FmtLen %d, FC %d, Card %d", fmtLen, FC, Card);
653 } else if(fmtLen==26){
654 FC = ((ByteStream[3] & 0x7F)<<1) | (ByteStream[4]>>7);
655 Card = ((ByteStream[4]&0x7F)<<9) | (ByteStream[5]<<1) | (ByteStream[6]>>7);
656 PrintAndLog("G-Prox-II Found: FmtLen %d, FC %d, Card %d",(unsigned int)fmtLen,FC,Card);
657 } else {
658 PrintAndLog("Unknown G-Prox-II Fmt Found: FmtLen %d",(int)fmtLen);
659 }
660 PrintAndLog("Raw: %08x%08x%08x", raw1,raw2,raw3);
661 setDemodBuf(DemodBuffer+ans, 96, 0);
662 return 1;
663 }
664
665 //by marshmellow
666 //see ASKDemod for what args are accepted
667 int CmdVikingDemod(const char *Cmd)
668 {
669 if (!ASKDemod(Cmd, false, false, 1)) {
670 if (g_debugMode) PrintAndLog("ASKDemod failed");
671 return 0;
672 }
673 size_t size = DemodBufferLen;
674 //call lfdemod.c demod for Viking
675 int ans = VikingDemod_AM(DemodBuffer, &size);
676 if (ans < 0) {
677 if (g_debugMode) PrintAndLog("Error Viking_Demod %d", ans);
678 return 0;
679 }
680 //got a good demod
681 uint32_t raw1 = bytebits_to_byte(DemodBuffer+ans, 32);
682 uint32_t raw2 = bytebits_to_byte(DemodBuffer+ans+32, 32);
683 uint32_t cardid = bytebits_to_byte(DemodBuffer+ans+24, 32);
684 uint8_t checksum = bytebits_to_byte(DemodBuffer+ans+32+24, 8);
685 PrintAndLog("Viking Tag Found: Card ID %08X, Checksum: %02X", cardid, (unsigned int) checksum);
686 PrintAndLog("Raw: %08X%08X", raw1,raw2);
687 setDemodBuf(DemodBuffer+ans, 64, 0);
688 return 1;
689 }
690
691 //by marshmellow - see ASKDemod
692 int Cmdaskrawdemod(const char *Cmd)
693 {
694 char cmdp = param_getchar(Cmd, 0);
695 if (strlen(Cmd) > 25 || cmdp == 'h' || cmdp == 'H') {
696 PrintAndLog("Usage: data rawdemod ar [clock] <invert> [maxError] [maxLen] [amplify]");
697 PrintAndLog(" [set clock as integer] optional, if not set, autodetect");
698 PrintAndLog(" <invert>, 1 to invert output");
699 PrintAndLog(" [set maximum allowed errors], default = 100");
700 PrintAndLog(" [set maximum Samples to read], default = 32768 (1024 bits at rf/64)");
701 PrintAndLog(" <amplify>, 'a' to attempt demod with ask amplification, default = no amp");
702 PrintAndLog("");
703 PrintAndLog(" sample: data rawdemod ar = demod an ask tag from GraphBuffer");
704 PrintAndLog(" : data rawdemod ar a = demod an ask tag from GraphBuffer, amplified");
705 PrintAndLog(" : data rawdemod ar 32 = demod an ask tag from GraphBuffer using a clock of RF/32");
706 PrintAndLog(" : data rawdemod ar 32 1 = demod an ask tag from GraphBuffer using a clock of RF/32 and inverting data");
707 PrintAndLog(" : data rawdemod ar 1 = demod an ask tag from GraphBuffer while inverting data");
708 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");
709 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");
710 return 0;
711 }
712 return ASKDemod(Cmd, TRUE, FALSE, 0);
713 }
714
715 int AutoCorrelate(int window, bool SaveGrph, bool verbose)
716 {
717 static int CorrelBuffer[MAX_GRAPH_TRACE_LEN];
718 size_t Correlation = 0;
719 int maxSum = 0;
720 int lastMax = 0;
721 if (verbose) PrintAndLog("performing %d correlations", GraphTraceLen - window);
722 for (int i = 0; i < GraphTraceLen - window; ++i) {
723 int sum = 0;
724 for (int j = 0; j < window; ++j) {
725 sum += (GraphBuffer[j]*GraphBuffer[i + j]) / 256;
726 }
727 CorrelBuffer[i] = sum;
728 if (sum >= maxSum-100 && sum <= maxSum+100){
729 //another max
730 Correlation = i-lastMax;
731 lastMax = i;
732 if (sum > maxSum) maxSum = sum;
733 } else if (sum > maxSum){
734 maxSum=sum;
735 lastMax = i;
736 }
737 }
738 if (Correlation==0){
739 //try again with wider margin
740 for (int i = 0; i < GraphTraceLen - window; i++){
741 if (CorrelBuffer[i] >= maxSum-(maxSum*0.05) && CorrelBuffer[i] <= maxSum+(maxSum*0.05)){
742 //another max
743 Correlation = i-lastMax;
744 lastMax = i;
745 //if (CorrelBuffer[i] > maxSum) maxSum = sum;
746 }
747 }
748 }
749 if (verbose && Correlation > 0) PrintAndLog("Possible Correlation: %d samples",Correlation);
750
751 if (SaveGrph){
752 GraphTraceLen = GraphTraceLen - window;
753 memcpy(GraphBuffer, CorrelBuffer, GraphTraceLen * sizeof (int));
754 RepaintGraphWindow();
755 }
756 return Correlation;
757 }
758
759 int usage_data_autocorr(void)
760 {
761 //print help
762 PrintAndLog("Usage: data autocorr [window] [g]");
763 PrintAndLog("Options: ");
764 PrintAndLog(" h This help");
765 PrintAndLog(" [window] window length for correlation - default = 4000");
766 PrintAndLog(" g save back to GraphBuffer (overwrite)");
767 return 0;
768 }
769
770 int CmdAutoCorr(const char *Cmd)
771 {
772 char cmdp = param_getchar(Cmd, 0);
773 if (cmdp == 'h' || cmdp == 'H')
774 return usage_data_autocorr();
775 int window = 4000; //set default
776 char grph=0;
777 bool updateGrph = FALSE;
778 sscanf(Cmd, "%i %c", &window, &grph);
779
780 if (window >= GraphTraceLen) {
781 PrintAndLog("window must be smaller than trace (%d samples)",
782 GraphTraceLen);
783 return 0;
784 }
785 if (grph == 'g') updateGrph=TRUE;
786 return AutoCorrelate(window, updateGrph, TRUE);
787 }
788
789 int CmdBitsamples(const char *Cmd)
790 {
791 int cnt = 0;
792 uint8_t got[12288];
793
794 GetFromBigBuf(got,sizeof(got),0);
795 WaitForResponse(CMD_ACK,NULL);
796
797 for (int j = 0; j < sizeof(got); j++) {
798 for (int k = 0; k < 8; k++) {
799 if(got[j] & (1 << (7 - k))) {
800 GraphBuffer[cnt++] = 1;
801 } else {
802 GraphBuffer[cnt++] = 0;
803 }
804 }
805 }
806 GraphTraceLen = cnt;
807 RepaintGraphWindow();
808 return 0;
809 }
810
811 int CmdBuffClear(const char *Cmd)
812 {
813 UsbCommand c = {CMD_BUFF_CLEAR};
814 SendCommand(&c);
815 ClearGraph(true);
816 return 0;
817 }
818
819 int CmdDec(const char *Cmd)
820 {
821 for (int i = 0; i < (GraphTraceLen / 2); ++i)
822 GraphBuffer[i] = GraphBuffer[i * 2];
823 GraphTraceLen /= 2;
824 PrintAndLog("decimated by 2");
825 RepaintGraphWindow();
826 return 0;
827 }
828 /**
829 * Undecimate - I'd call it 'interpolate', but we'll save that
830 * name until someone does an actual interpolation command, not just
831 * blindly repeating samples
832 * @param Cmd
833 * @return
834 */
835 int CmdUndec(const char *Cmd)
836 {
837 if(param_getchar(Cmd, 0) == 'h')
838 {
839 PrintAndLog("Usage: data undec [factor]");
840 PrintAndLog("This function performs un-decimation, by repeating each sample N times");
841 PrintAndLog("Options: ");
842 PrintAndLog(" h This help");
843 PrintAndLog(" factor The number of times to repeat each sample.[default:2]");
844 PrintAndLog("Example: 'data undec 3'");
845 return 0;
846 }
847
848 uint8_t factor = param_get8ex(Cmd, 0,2, 10);
849 //We have memory, don't we?
850 int swap[MAX_GRAPH_TRACE_LEN] = { 0 };
851 uint32_t g_index = 0 ,s_index = 0;
852 while(g_index < GraphTraceLen && s_index < MAX_GRAPH_TRACE_LEN)
853 {
854 int count = 0;
855 for(count = 0; count < factor && s_index+count < MAX_GRAPH_TRACE_LEN; count ++)
856 swap[s_index+count] = GraphBuffer[g_index];
857 s_index+=count;
858 }
859
860 memcpy(GraphBuffer,swap, s_index * sizeof(int));
861 GraphTraceLen = s_index;
862 RepaintGraphWindow();
863 return 0;
864 }
865
866 //by marshmellow
867 //shift graph zero up or down based on input + or -
868 int CmdGraphShiftZero(const char *Cmd)
869 {
870
871 int shift=0;
872 //set options from parameters entered with the command
873 sscanf(Cmd, "%i", &shift);
874 int shiftedVal=0;
875 for(int i = 0; i<GraphTraceLen; i++){
876 shiftedVal=GraphBuffer[i]+shift;
877 if (shiftedVal>127)
878 shiftedVal=127;
879 else if (shiftedVal<-127)
880 shiftedVal=-127;
881 GraphBuffer[i]= shiftedVal;
882 }
883 CmdNorm("");
884 return 0;
885 }
886
887 //by marshmellow
888 //use large jumps in read samples to identify edges of waves and then amplify that wave to max
889 //similar to dirtheshold, threshold commands
890 //takes a threshold length which is the measured length between two samples then determines an edge
891 int CmdAskEdgeDetect(const char *Cmd)
892 {
893 int thresLen = 25;
894 sscanf(Cmd, "%i", &thresLen);
895
896 for(int i = 1; i<GraphTraceLen; i++){
897 if (GraphBuffer[i]-GraphBuffer[i-1]>=thresLen) //large jump up
898 GraphBuffer[i-1] = 127;
899 else if(GraphBuffer[i]-GraphBuffer[i-1]<=-1*thresLen) //large jump down
900 GraphBuffer[i-1] = -127;
901 }
902 RepaintGraphWindow();
903 return 0;
904 }
905
906 /* Print our clock rate */
907 // uses data from graphbuffer
908 // adjusted to take char parameter for type of modulation to find the clock - by marshmellow.
909 int CmdDetectClockRate(const char *Cmd)
910 {
911 char cmdp = param_getchar(Cmd, 0);
912 if (strlen(Cmd) > 6 || strlen(Cmd) == 0 || cmdp == 'h' || cmdp == 'H') {
913 PrintAndLog("Usage: data detectclock [modulation] <clock>");
914 PrintAndLog(" [modulation as char], specify the modulation type you want to detect the clock of");
915 PrintAndLog(" <clock> , specify the clock (optional - to get best start position only)");
916 PrintAndLog(" 'a' = ask, 'f' = fsk, 'n' = nrz/direct, 'p' = psk");
917 PrintAndLog("");
918 PrintAndLog(" sample: data detectclock a = detect the clock of an ask modulated wave in the GraphBuffer");
919 PrintAndLog(" data detectclock f = detect the clock of an fsk modulated wave in the GraphBuffer");
920 PrintAndLog(" data detectclock p = detect the clock of an psk modulated wave in the GraphBuffer");
921 PrintAndLog(" data detectclock n = detect the clock of an nrz/direct modulated wave in the GraphBuffer");
922 }
923 int ans=0;
924 if (cmdp == 'a'){
925 ans = GetAskClock(Cmd+1, true, false);
926 } else if (cmdp == 'f'){
927 ans = GetFskClock("", true, false);
928 } else if (cmdp == 'n'){
929 ans = GetNrzClock("", true, false);
930 } else if (cmdp == 'p'){
931 ans = GetPskClock("", true, false);
932 } else {
933 PrintAndLog ("Please specify a valid modulation to detect the clock of - see option h for help");
934 }
935 return ans;
936 }
937
938 char *GetFSKType(uint8_t fchigh, uint8_t fclow, uint8_t invert)
939 {
940 static char fType[8];
941 memset(fType, 0x00, 8);
942 char *fskType = fType;
943 if (fchigh==10 && fclow==8){
944 if (invert) //fsk2a
945 memcpy(fskType, "FSK2a", 5);
946 else //fsk2
947 memcpy(fskType, "FSK2", 4);
948 } else if (fchigh == 8 && fclow == 5) {
949 if (invert)
950 memcpy(fskType, "FSK1", 4);
951 else
952 memcpy(fskType, "FSK1a", 5);
953 } else {
954 memcpy(fskType, "FSK??", 5);
955 }
956 return fskType;
957 }
958
959 //by marshmellow
960 //fsk raw demod and print binary
961 //takes 4 arguments - Clock, invert, fchigh, fclow
962 //defaults: clock = 50, invert=1, fchigh=10, fclow=8 (RF/10 RF/8 (fsk2a))
963 int FSKrawDemod(const char *Cmd, bool verbose)
964 {
965 //raw fsk demod no manchester decoding no start bit finding just get binary from wave
966 uint8_t rfLen, invert, fchigh, fclow;
967 //set defaults
968 //set options from parameters entered with the command
969 rfLen = param_get8(Cmd, 0);
970 invert = param_get8(Cmd, 1);
971 fchigh = param_get8(Cmd, 2);
972 fclow = param_get8(Cmd, 3);
973
974 if (strlen(Cmd)>0 && strlen(Cmd)<=2) {
975 if (rfLen==1) {
976 invert = 1; //if invert option only is used
977 rfLen = 0;
978 }
979 }
980 uint8_t BitStream[MAX_GRAPH_TRACE_LEN]={0};
981 size_t BitLen = getFromGraphBuf(BitStream);
982 if (BitLen==0) return 0;
983 //get field clock lengths
984 uint16_t fcs=0;
985 if (!fchigh || !fclow) {
986 fcs = countFC(BitStream, BitLen, 1);
987 if (!fcs) {
988 fchigh = 10;
989 fclow = 8;
990 } else {
991 fchigh = (fcs >> 8) & 0x00FF;
992 fclow = fcs & 0x00FF;
993 }
994 }
995 //get bit clock length
996 if (!rfLen) {
997 rfLen = detectFSKClk(BitStream, BitLen, fchigh, fclow);
998 if (!rfLen) rfLen = 50;
999 }
1000 int size = fskdemod(BitStream, BitLen, rfLen, invert, fchigh, fclow);
1001 if (size > 0) {
1002 setDemodBuf(BitStream,size,0);
1003
1004 // Now output the bitstream to the scrollback by line of 16 bits
1005 if (verbose || g_debugMode) {
1006 PrintAndLog("\nUsing Clock:%u, invert:%u, fchigh:%u, fclow:%u", (unsigned int)rfLen, (unsigned int)invert, (unsigned int)fchigh, (unsigned int)fclow);
1007 PrintAndLog("%s decoded bitstream:",GetFSKType(fchigh,fclow,invert));
1008 printDemodBuff();
1009 }
1010
1011 return 1;
1012 } else {
1013 if (g_debugMode) PrintAndLog("no FSK data found");
1014 }
1015 return 0;
1016 }
1017
1018 //by marshmellow
1019 //fsk raw demod and print binary
1020 //takes 4 arguments - Clock, invert, fchigh, fclow
1021 //defaults: clock = 50, invert=1, fchigh=10, fclow=8 (RF/10 RF/8 (fsk2a))
1022 int CmdFSKrawdemod(const char *Cmd)
1023 {
1024 char cmdp = param_getchar(Cmd, 0);
1025 if (strlen(Cmd) > 10 || cmdp == 'h' || cmdp == 'H') {
1026 PrintAndLog("Usage: data rawdemod fs [clock] <invert> [fchigh] [fclow]");
1027 PrintAndLog(" [set clock as integer] optional, omit for autodetect.");
1028 PrintAndLog(" <invert>, 1 for invert output, can be used even if the clock is omitted");
1029 PrintAndLog(" [fchigh], larger field clock length, omit for autodetect");
1030 PrintAndLog(" [fclow], small field clock length, omit for autodetect");
1031 PrintAndLog("");
1032 PrintAndLog(" sample: data rawdemod fs = demod an fsk tag from GraphBuffer using autodetect");
1033 PrintAndLog(" : data rawdemod fs 32 = demod an fsk tag from GraphBuffer using a clock of RF/32, autodetect fc");
1034 PrintAndLog(" : data rawdemod fs 1 = demod an fsk tag from GraphBuffer using autodetect, invert output");
1035 PrintAndLog(" : data rawdemod fs 32 1 = demod an fsk tag from GraphBuffer using a clock of RF/32, invert output, autodetect fc");
1036 PrintAndLog(" : data rawdemod fs 64 0 8 5 = demod an fsk1 RF/64 tag from GraphBuffer");
1037 PrintAndLog(" : data rawdemod fs 50 0 10 8 = demod an fsk2 RF/50 tag from GraphBuffer");
1038 PrintAndLog(" : data rawdemod fs 50 1 10 8 = demod an fsk2a RF/50 tag from GraphBuffer");
1039 return 0;
1040 }
1041 return FSKrawDemod(Cmd, TRUE);
1042 }
1043
1044 //by marshmellow (based on existing demod + holiman's refactor)
1045 //HID Prox demod - FSK RF/50 with preamble of 00011101 (then manchester encoded)
1046 //print full HID Prox ID and some bit format details if found
1047 int CmdFSKdemodHID(const char *Cmd)
1048 {
1049 //raw fsk demod no manchester decoding no start bit finding just get binary from wave
1050 uint32_t hi2=0, hi=0, lo=0;
1051
1052 uint8_t BitStream[MAX_GRAPH_TRACE_LEN]={0};
1053 size_t BitLen = getFromGraphBuf(BitStream);
1054 if (BitLen==0) return 0;
1055 //get binary from fsk wave
1056 int idx = HIDdemodFSK(BitStream,&BitLen,&hi2,&hi,&lo);
1057 if (idx<0){
1058 if (g_debugMode){
1059 if (idx==-1){
1060 PrintAndLog("DEBUG: Just Noise Detected");
1061 } else if (idx == -2) {
1062 PrintAndLog("DEBUG: Error demoding fsk");
1063 } else if (idx == -3) {
1064 PrintAndLog("DEBUG: Preamble not found");
1065 } else if (idx == -4) {
1066 PrintAndLog("DEBUG: Error in Manchester data, SIZE: %d", BitLen);
1067 } else {
1068 PrintAndLog("DEBUG: Error demoding fsk %d", idx);
1069 }
1070 }
1071 return 0;
1072 }
1073 if (hi2==0 && hi==0 && lo==0) {
1074 if (g_debugMode) PrintAndLog("DEBUG: Error - no values found");
1075 return 0;
1076 }
1077 if (hi2 != 0){ //extra large HID tags
1078 PrintAndLog("HID Prox TAG ID: %x%08x%08x (%d)",
1079 (unsigned int) hi2, (unsigned int) hi, (unsigned int) lo, (unsigned int) (lo>>1) & 0xFFFF);
1080 }
1081 else { //standard HID tags <38 bits
1082 uint8_t fmtLen = 0;
1083 uint32_t fc = 0;
1084 uint32_t cardnum = 0;
1085 if (((hi>>5)&1)==1){//if bit 38 is set then < 37 bit format is used
1086 uint32_t lo2=0;
1087 lo2=(((hi & 31) << 12) | (lo>>20)); //get bits 21-37 to check for format len bit
1088 uint8_t idx3 = 1;
1089 while(lo2>1){ //find last bit set to 1 (format len bit)
1090 lo2=lo2>>1;
1091 idx3++;
1092 }
1093 fmtLen =idx3+19;
1094 fc =0;
1095 cardnum=0;
1096 if(fmtLen==26){
1097 cardnum = (lo>>1)&0xFFFF;
1098 fc = (lo>>17)&0xFF;
1099 }
1100 if(fmtLen==34){
1101 cardnum = (lo>>1)&0xFFFF;
1102 fc= ((hi&1)<<15)|(lo>>17);
1103 }
1104 if(fmtLen==35){
1105 cardnum = (lo>>1)&0xFFFFF;
1106 fc = ((hi&1)<<11)|(lo>>21);
1107 }
1108 }
1109 else { //if bit 38 is not set then 37 bit format is used
1110 fmtLen = 37;
1111 fc = 0;
1112 cardnum = 0;
1113 if(fmtLen == 37){
1114 cardnum = (lo>>1)&0x7FFFF;
1115 fc = ((hi&0xF)<<12)|(lo>>20);
1116 }
1117 }
1118 PrintAndLog("HID Prox TAG ID: %x%08x (%d) - Format Len: %dbit - FC: %d - Card: %d",
1119 (unsigned int) hi, (unsigned int) lo, (unsigned int) (lo>>1) & 0xFFFF,
1120 (unsigned int) fmtLen, (unsigned int) fc, (unsigned int) cardnum);
1121 }
1122 setDemodBuf(BitStream,BitLen,idx);
1123 if (g_debugMode){
1124 PrintAndLog("DEBUG: idx: %d, Len: %d, Printing Demod Buffer:", idx, BitLen);
1125 printDemodBuff();
1126 }
1127 return 1;
1128 }
1129
1130 //by marshmellow
1131 //Paradox Prox demod - FSK RF/50 with preamble of 00001111 (then manchester encoded)
1132 //print full Paradox Prox ID and some bit format details if found
1133 int CmdFSKdemodParadox(const char *Cmd)
1134 {
1135 //raw fsk demod no manchester decoding no start bit finding just get binary from wave
1136 uint32_t hi2=0, hi=0, lo=0;
1137
1138 uint8_t BitStream[MAX_GRAPH_TRACE_LEN]={0};
1139 size_t BitLen = getFromGraphBuf(BitStream);
1140 if (BitLen==0) return 0;
1141 //get binary from fsk wave
1142 int idx = ParadoxdemodFSK(BitStream,&BitLen,&hi2,&hi,&lo);
1143 if (idx<0){
1144 if (g_debugMode){
1145 if (idx==-1){
1146 PrintAndLog("DEBUG: Just Noise Detected");
1147 } else if (idx == -2) {
1148 PrintAndLog("DEBUG: Error demoding fsk");
1149 } else if (idx == -3) {
1150 PrintAndLog("DEBUG: Preamble not found");
1151 } else if (idx == -4) {
1152 PrintAndLog("DEBUG: Error in Manchester data");
1153 } else {
1154 PrintAndLog("DEBUG: Error demoding fsk %d", idx);
1155 }
1156 }
1157 return 0;
1158 }
1159 if (hi2==0 && hi==0 && lo==0){
1160 if (g_debugMode) PrintAndLog("DEBUG: Error - no value found");
1161 return 0;
1162 }
1163 uint32_t fc = ((hi & 0x3)<<6) | (lo>>26);
1164 uint32_t cardnum = (lo>>10)&0xFFFF;
1165 uint32_t rawLo = bytebits_to_byte(BitStream+idx+64,32);
1166 uint32_t rawHi = bytebits_to_byte(BitStream+idx+32,32);
1167 uint32_t rawHi2 = bytebits_to_byte(BitStream+idx,32);
1168
1169 PrintAndLog("Paradox TAG ID: %x%08x - FC: %d - Card: %d - Checksum: %02x - RAW: %08x%08x%08x",
1170 hi>>10, (hi & 0x3)<<26 | (lo>>10), fc, cardnum, (lo>>2) & 0xFF, rawHi2, rawHi, rawLo);
1171 setDemodBuf(BitStream,BitLen,idx);
1172 if (g_debugMode){
1173 PrintAndLog("DEBUG: idx: %d, len: %d, Printing Demod Buffer:", idx, BitLen);
1174 printDemodBuff();
1175 }
1176 return 1;
1177 }
1178
1179 //by marshmellow
1180 //IO-Prox demod - FSK RF/64 with preamble of 000000001
1181 //print ioprox ID and some format details
1182 int CmdFSKdemodIO(const char *Cmd)
1183 {
1184 int idx=0;
1185 //something in graphbuffer?
1186 if (GraphTraceLen < 65) {
1187 if (g_debugMode)PrintAndLog("DEBUG: not enough samples in GraphBuffer");
1188 return 0;
1189 }
1190 uint8_t BitStream[MAX_GRAPH_TRACE_LEN]={0};
1191 size_t BitLen = getFromGraphBuf(BitStream);
1192 if (BitLen==0) return 0;
1193
1194 //get binary from fsk wave
1195 idx = IOdemodFSK(BitStream,BitLen);
1196 if (idx<0){
1197 if (g_debugMode){
1198 if (idx==-1){
1199 PrintAndLog("DEBUG: Just Noise Detected");
1200 } else if (idx == -2) {
1201 PrintAndLog("DEBUG: not enough samples");
1202 } else if (idx == -3) {
1203 PrintAndLog("DEBUG: error during fskdemod");
1204 } else if (idx == -4) {
1205 PrintAndLog("DEBUG: Preamble not found");
1206 } else if (idx == -5) {
1207 PrintAndLog("DEBUG: Separator bits not found");
1208 } else {
1209 PrintAndLog("DEBUG: Error demoding fsk %d", idx);
1210 }
1211 }
1212 return 0;
1213 }
1214 if (idx==0){
1215 if (g_debugMode){
1216 PrintAndLog("DEBUG: IO Prox Data not found - FSK Bits: %d",BitLen);
1217 if (BitLen > 92) PrintAndLog("%s", sprint_bin_break(BitStream,92,16));
1218 }
1219 return 0;
1220 }
1221 //Index map
1222 //0 10 20 30 40 50 60
1223 //| | | | | | |
1224 //01234567 8 90123456 7 89012345 6 78901234 5 67890123 4 56789012 3 45678901 23
1225 //-----------------------------------------------------------------------------
1226 //00000000 0 11110000 1 facility 1 version* 1 code*one 1 code*two 1 ???????? 11
1227 //
1228 //XSF(version)facility:codeone+codetwo (raw)
1229 //Handle the data
1230 if (idx+64>BitLen) {
1231 if (g_debugMode) PrintAndLog("not enough bits found - bitlen: %d",BitLen);
1232 return 0;
1233 }
1234 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]);
1235 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]);
1236 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]);
1237 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]);
1238 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]);
1239 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]);
1240 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]);
1241
1242 uint32_t code = bytebits_to_byte(BitStream+idx,32);
1243 uint32_t code2 = bytebits_to_byte(BitStream+idx+32,32);
1244 uint8_t version = bytebits_to_byte(BitStream+idx+27,8); //14,4
1245 uint8_t facilitycode = bytebits_to_byte(BitStream+idx+18,8) ;
1246 uint16_t number = (bytebits_to_byte(BitStream+idx+36,8)<<8)|(bytebits_to_byte(BitStream+idx+45,8)); //36,9
1247 uint8_t crc = bytebits_to_byte(BitStream+idx+54,8);
1248 uint16_t calccrc = 0;
1249
1250 for (uint8_t i=1; i<6; ++i){
1251 calccrc += bytebits_to_byte(BitStream+idx+9*i,8);
1252 }
1253 calccrc &= 0xff;
1254 calccrc = 0xff - calccrc;
1255
1256 char *crcStr = (crc == calccrc) ? "crc ok": "!crc";
1257
1258 PrintAndLog("IO Prox XSF(%02d)%02x:%05d (%08x%08x) [%02x %s]",version,facilitycode,number,code,code2, crc, crcStr);
1259 setDemodBuf(BitStream,64,idx);
1260 if (g_debugMode){
1261 PrintAndLog("DEBUG: idx: %d, Len: %d, Printing demod buffer:",idx,64);
1262 printDemodBuff();
1263 }
1264 return 1;
1265 }
1266
1267 //by marshmellow
1268 //AWID Prox demod - FSK RF/50 with preamble of 00000001 (always a 96 bit data stream)
1269 //print full AWID Prox ID and some bit format details if found
1270 int CmdFSKdemodAWID(const char *Cmd)
1271 {
1272 uint8_t BitStream[MAX_GRAPH_TRACE_LEN]={0};
1273 size_t size = getFromGraphBuf(BitStream);
1274 if (size==0) return 0;
1275
1276 //get binary from fsk wave
1277 int idx = AWIDdemodFSK(BitStream, &size);
1278 if (idx<=0){
1279 if (g_debugMode==1){
1280 if (idx == -1)
1281 PrintAndLog("DEBUG: Error - not enough samples");
1282 else if (idx == -2)
1283 PrintAndLog("DEBUG: Error - only noise found");
1284 else if (idx == -3)
1285 PrintAndLog("DEBUG: Error - problem during FSK demod");
1286 else if (idx == -4)
1287 PrintAndLog("DEBUG: Error - AWID preamble not found");
1288 else if (idx == -5)
1289 PrintAndLog("DEBUG: Error - Size not correct: %d", size);
1290 else
1291 PrintAndLog("DEBUG: Error %d",idx);
1292 }
1293 return 0;
1294 }
1295
1296 // Index map
1297 // 0 10 20 30 40 50 60
1298 // | | | | | | |
1299 // 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
1300 // -----------------------------------------------------------------------------
1301 // 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
1302 // 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
1303 // |---26 bit---| |-----117----||-------------142-------------|
1304 // b = format bit len, o = odd parity of last 3 bits
1305 // f = facility code, c = card number
1306 // w = wiegand parity
1307 // (26 bit format shown)
1308
1309 //get raw ID before removing parities
1310 uint32_t rawLo = bytebits_to_byte(BitStream+idx+64,32);
1311 uint32_t rawHi = bytebits_to_byte(BitStream+idx+32,32);
1312 uint32_t rawHi2 = bytebits_to_byte(BitStream+idx,32);
1313 setDemodBuf(BitStream,96,idx);
1314
1315 size = removeParity(BitStream, idx+8, 4, 1, 88);
1316 if (size != 66){
1317 if (g_debugMode==1) PrintAndLog("DEBUG: Error - at parity check-tag size does not match AWID format");
1318 return 0;
1319 }
1320 // ok valid card found!
1321
1322 // Index map
1323 // 0 10 20 30 40 50 60
1324 // | | | | | | |
1325 // 01234567 8 90123456 7890123456789012 3 456789012345678901234567890123456
1326 // -----------------------------------------------------------------------------
1327 // 00011010 1 01110101 0000000010001110 1 000000000000000000000000000000000
1328 // bbbbbbbb w ffffffff cccccccccccccccc w xxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxx
1329 // |26 bit| |-117--| |-----142------|
1330 // b = format bit len, o = odd parity of last 3 bits
1331 // f = facility code, c = card number
1332 // w = wiegand parity
1333 // (26 bit format shown)
1334
1335 uint32_t fc = 0;
1336 uint32_t cardnum = 0;
1337 uint32_t code1 = 0;
1338 uint32_t code2 = 0;
1339 uint8_t fmtLen = bytebits_to_byte(BitStream,8);
1340 if (fmtLen==26){
1341 fc = bytebits_to_byte(BitStream+9, 8);
1342 cardnum = bytebits_to_byte(BitStream+17, 16);
1343 code1 = bytebits_to_byte(BitStream+8,fmtLen);
1344 PrintAndLog("AWID Found - BitLength: %d, FC: %d, Card: %d - Wiegand: %x, Raw: %08x%08x%08x", fmtLen, fc, cardnum, code1, rawHi2, rawHi, rawLo);
1345 } else {
1346 cardnum = bytebits_to_byte(BitStream+8+(fmtLen-17), 16);
1347 if (fmtLen>32){
1348 code1 = bytebits_to_byte(BitStream+8,fmtLen-32);
1349 code2 = bytebits_to_byte(BitStream+8+(fmtLen-32),32);
1350 PrintAndLog("AWID Found - BitLength: %d -unknown BitLength- (%d) - Wiegand: %x%08x, Raw: %08x%08x%08x", fmtLen, cardnum, code1, code2, rawHi2, rawHi, rawLo);
1351 } else{
1352 code1 = bytebits_to_byte(BitStream+8,fmtLen);
1353 PrintAndLog("AWID Found - BitLength: %d -unknown BitLength- (%d) - Wiegand: %x, Raw: %08x%08x%08x", fmtLen, cardnum, code1, rawHi2, rawHi, rawLo);
1354 }
1355 }
1356 if (g_debugMode){
1357 PrintAndLog("DEBUG: idx: %d, Len: %d Printing Demod Buffer:", idx, 96);
1358 printDemodBuff();
1359 }
1360 //todo - convert hi2, hi, lo to demodbuffer for future sim/clone commands
1361 return 1;
1362 }
1363
1364 //by marshmellow
1365 //Pyramid Prox demod - FSK RF/50 with preamble of 0000000000000001 (always a 128 bit data stream)
1366 //print full Farpointe Data/Pyramid Prox ID and some bit format details if found
1367 int CmdFSKdemodPyramid(const char *Cmd)
1368 {
1369 //raw fsk demod no manchester decoding no start bit finding just get binary from wave
1370 uint8_t BitStream[MAX_GRAPH_TRACE_LEN]={0};
1371 size_t size = getFromGraphBuf(BitStream);
1372 if (size==0) return 0;
1373
1374 //get binary from fsk wave
1375 int idx = PyramiddemodFSK(BitStream, &size);
1376 if (idx < 0){
1377 if (g_debugMode==1){
1378 if (idx == -5)
1379 PrintAndLog("DEBUG: Error - not enough samples");
1380 else if (idx == -1)
1381 PrintAndLog("DEBUG: Error - only noise found");
1382 else if (idx == -2)
1383 PrintAndLog("DEBUG: Error - problem during FSK demod");
1384 else if (idx == -3)
1385 PrintAndLog("DEBUG: Error - Size not correct: %d", size);
1386 else if (idx == -4)
1387 PrintAndLog("DEBUG: Error - Pyramid preamble not found");
1388 else
1389 PrintAndLog("DEBUG: Error - idx: %d",idx);
1390 }
1391 return 0;
1392 }
1393 // Index map
1394 // 0 10 20 30 40 50 60
1395 // | | | | | | |
1396 // 0123456 7 8901234 5 6789012 3 4567890 1 2345678 9 0123456 7 8901234 5 6789012 3
1397 // -----------------------------------------------------------------------------
1398 // 0000000 0 0000000 1 0000000 1 0000000 1 0000000 1 0000000 1 0000000 1 0000000 1
1399 // premable xxxxxxx o xxxxxxx o xxxxxxx o xxxxxxx o xxxxxxx o xxxxxxx o xxxxxxx o
1400
1401 // 64 70 80 90 100 110 120
1402 // | | | | | | |
1403 // 4567890 1 2345678 9 0123456 7 8901234 5 6789012 3 4567890 1 2345678 9 0123456 7
1404 // -----------------------------------------------------------------------------
1405 // 0000000 1 0000000 1 0000000 1 0110111 0 0011000 1 0000001 0 0001100 1 1001010 0
1406 // xxxxxxx o xxxxxxx o xxxxxxx o xswffff o ffffccc o ccccccc o ccccccw o ppppppp o
1407 // |---115---||---------71---------|
1408 // s = format start bit, o = odd parity of last 7 bits
1409 // f = facility code, c = card number
1410 // w = wiegand parity, x = extra space for other formats
1411 // p = unknown checksum
1412 // (26 bit format shown)
1413
1414 //get bytes for checksum calc
1415 uint8_t checksum = bytebits_to_byte(BitStream + idx + 120, 8);
1416 uint8_t csBuff[14] = {0x00};
1417 for (uint8_t i = 0; i < 13; i++){
1418 csBuff[i] = bytebits_to_byte(BitStream + idx + 16 + (i*8), 8);
1419 }
1420 //check checksum calc
1421 //checksum calc thanks to ICEMAN!!
1422 uint32_t checkCS = CRC8Maxim(csBuff,13);
1423
1424 //get raw ID before removing parities
1425 uint32_t rawLo = bytebits_to_byte(BitStream+idx+96,32);
1426 uint32_t rawHi = bytebits_to_byte(BitStream+idx+64,32);
1427 uint32_t rawHi2 = bytebits_to_byte(BitStream+idx+32,32);
1428 uint32_t rawHi3 = bytebits_to_byte(BitStream+idx,32);
1429 setDemodBuf(BitStream,128,idx);
1430
1431 size = removeParity(BitStream, idx+8, 8, 1, 120);
1432 if (size != 105){
1433 if (g_debugMode==1)
1434 PrintAndLog("DEBUG: Error at parity check - tag size does not match Pyramid format, SIZE: %d, IDX: %d, hi3: %x",size, idx, rawHi3);
1435 return 0;
1436 }
1437
1438 // ok valid card found!
1439
1440 // Index map
1441 // 0 10 20 30 40 50 60 70
1442 // | | | | | | | |
1443 // 01234567890123456789012345678901234567890123456789012345678901234567890
1444 // -----------------------------------------------------------------------
1445 // 00000000000000000000000000000000000000000000000000000000000000000000000
1446 // xxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxx
1447
1448 // 71 80 90 100
1449 // | | | |
1450 // 1 2 34567890 1234567890123456 7 8901234
1451 // ---------------------------------------
1452 // 1 1 01110011 0000000001000110 0 1001010
1453 // s w ffffffff cccccccccccccccc w ppppppp
1454 // |--115-| |------71------|
1455 // s = format start bit, o = odd parity of last 7 bits
1456 // f = facility code, c = card number
1457 // w = wiegand parity, x = extra space for other formats
1458 // p = unknown checksum
1459 // (26 bit format shown)
1460
1461 //find start bit to get fmtLen
1462 int j;
1463 for (j=0; j<size; j++){
1464 if(BitStream[j]) break;
1465 }
1466 uint8_t fmtLen = size-j-8;
1467 uint32_t fc = 0;
1468 uint32_t cardnum = 0;
1469 uint32_t code1 = 0;
1470 if (fmtLen==26){
1471 fc = bytebits_to_byte(BitStream+73, 8);
1472 cardnum = bytebits_to_byte(BitStream+81, 16);
1473 code1 = bytebits_to_byte(BitStream+72,fmtLen);
1474 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);
1475 } else if (fmtLen==45){
1476 fmtLen=42; //end = 10 bits not 7 like 26 bit fmt
1477 fc = bytebits_to_byte(BitStream+53, 10);
1478 cardnum = bytebits_to_byte(BitStream+63, 32);
1479 PrintAndLog("Pyramid ID Found - BitLength: %d, FC: %d, Card: %d - Raw: %08x%08x%08x%08x", fmtLen, fc, cardnum, rawHi3, rawHi2, rawHi, rawLo);
1480 } else {
1481 cardnum = bytebits_to_byte(BitStream+81, 16);
1482 if (fmtLen>32){
1483 //code1 = bytebits_to_byte(BitStream+(size-fmtLen),fmtLen-32);
1484 //code2 = bytebits_to_byte(BitStream+(size-32),32);
1485 PrintAndLog("Pyramid ID Found - BitLength: %d -unknown BitLength- (%d), Raw: %08x%08x%08x%08x", fmtLen, cardnum, rawHi3, rawHi2, rawHi, rawLo);
1486 } else{
1487 //code1 = bytebits_to_byte(BitStream+(size-fmtLen),fmtLen);
1488 PrintAndLog("Pyramid ID Found - BitLength: %d -unknown BitLength- (%d), Raw: %08x%08x%08x%08x", fmtLen, cardnum, rawHi3, rawHi2, rawHi, rawLo);
1489 }
1490 }
1491 if (checksum == checkCS)
1492 PrintAndLog("Checksum %02x passed", checksum);
1493 else
1494 PrintAndLog("Checksum %02x failed - should have been %02x", checksum, checkCS);
1495
1496 if (g_debugMode){
1497 PrintAndLog("DEBUG: idx: %d, Len: %d, Printing Demod Buffer:", idx, 128);
1498 printDemodBuff();
1499 }
1500 return 1;
1501 }
1502
1503 // FDX-B ISO11784/85 demod (aka animal tag) BIPHASE, inverted, rf/32, with preamble of 00000000001 (128bits)
1504 // 8 databits + 1 parity (1)
1505 // CIITT 16 chksum
1506 // NATIONAL CODE, ICAR database
1507 // COUNTRY CODE (ISO3166) or http://cms.abvma.ca/uploads/ManufacturersISOsandCountryCodes.pdf
1508 // FLAG (animal/non-animal)
1509 /*
1510 38 IDbits
1511 10 country code
1512 1 extra app bit
1513 14 reserved bits
1514 1 animal bit
1515 16 ccitt CRC chksum over 64bit ID CODE.
1516 24 appli bits.
1517
1518 -- sample: 985121004515220 [ 37FF65B88EF94 ]
1519 */
1520 int CmdFDXBdemodBI(const char *Cmd){
1521
1522 int invert = 1;
1523 int clk = 32;
1524 int errCnt = 0;
1525 int maxErr = 0;
1526 uint8_t BitStream[MAX_DEMOD_BUF_LEN];
1527 size_t size = getFromGraphBuf(BitStream);
1528
1529 errCnt = askdemod(BitStream, &size, &clk, &invert, maxErr, 0, 0);
1530 if ( errCnt < 0 || errCnt > maxErr ) {
1531 if (g_debugMode) PrintAndLog("DEBUG: no data or error found %d, clock: %d", errCnt, clk);
1532 return 0;
1533 }
1534
1535 errCnt = BiphaseRawDecode(BitStream, &size, maxErr, 1);
1536 if (errCnt < 0 || errCnt > maxErr ) {
1537 if (g_debugMode) PrintAndLog("Error BiphaseRawDecode: %d", errCnt);
1538 return 0;
1539 }
1540
1541 int preambleIndex = FDXBdemodBI(BitStream, &size);
1542 if (preambleIndex < 0){
1543 if (g_debugMode) PrintAndLog("Error FDXBDemod , no startmarker found :: %d",preambleIndex);
1544 return 0;
1545 }
1546 if (size != 128) {
1547 if (g_debugMode) PrintAndLog("Error incorrect data length found");
1548 return 0;
1549 }
1550
1551 setDemodBuf(BitStream, 128, preambleIndex);
1552
1553 // remove marker bits (1's every 9th digit after preamble) (pType = 2)
1554 size = removeParity(BitStream, preambleIndex + 11, 9, 2, 117);
1555 if ( size != 104 ) {
1556 if (g_debugMode) PrintAndLog("Error removeParity:: %d", size);
1557 return 0;
1558 }
1559 if (g_debugMode) {
1560 char *bin = sprint_bin_break(BitStream,size,16);
1561 PrintAndLog("DEBUG BinStream:\n%s",bin);
1562 }
1563 PrintAndLog("\nFDX-B / ISO 11784/5 Animal Tag ID Found:");
1564 if (g_debugMode) PrintAndLog("Start marker %d; Size %d", preambleIndex, size);
1565
1566 //got a good demod
1567 uint64_t NationalCode = ((uint64_t)(bytebits_to_byteLSBF(BitStream+32,6)) << 32) | bytebits_to_byteLSBF(BitStream,32);
1568 uint32_t countryCode = bytebits_to_byteLSBF(BitStream+38,10);
1569 uint8_t dataBlockBit = BitStream[48];
1570 uint32_t reservedCode = bytebits_to_byteLSBF(BitStream+49,14);
1571 uint8_t animalBit = BitStream[63];
1572 uint32_t crc16 = bytebits_to_byteLSBF(BitStream+64,16);
1573 uint32_t extended = bytebits_to_byteLSBF(BitStream+80,24);
1574
1575 uint64_t rawid = ((uint64_t)bytebits_to_byte(BitStream,32)<<32) | bytebits_to_byte(BitStream+32,32);
1576 uint8_t raw[8];
1577 num_to_bytes(rawid, 8, raw);
1578
1579 if (g_debugMode) PrintAndLog("Raw ID Hex: %s", sprint_hex(raw,8));
1580
1581 uint16_t calcCrc = crc16_ccitt_kermit(raw, 8);
1582 PrintAndLog("Animal ID: %04u-%012llu", countryCode, NationalCode);
1583 PrintAndLog("National Code: %012llu", NationalCode);
1584 PrintAndLog("CountryCode: %04u", countryCode);
1585 PrintAndLog("Extended Data: %s", dataBlockBit ? "True" : "False");
1586 PrintAndLog("reserved Code: %u", reservedCode);
1587 PrintAndLog("Animal Tag: %s", animalBit ? "True" : "False");
1588 PrintAndLog("CRC: 0x%04X - [%04X] - %s", crc16, calcCrc, (calcCrc == crc16) ? "Passed" : "Failed");
1589 PrintAndLog("Extended: 0x%X\n", extended);
1590
1591 return 1;
1592 }
1593
1594
1595 //by marshmellow
1596 //attempt to psk1 demod graph buffer
1597 int PSKDemod(const char *Cmd, bool verbose)
1598 {
1599 int invert=0;
1600 int clk=0;
1601 int maxErr=100;
1602 sscanf(Cmd, "%i %i %i", &clk, &invert, &maxErr);
1603 if (clk==1){
1604 invert=1;
1605 clk=0;
1606 }
1607 if (invert != 0 && invert != 1) {
1608 if (g_debugMode || verbose) PrintAndLog("Invalid argument: %s", Cmd);
1609 return 0;
1610 }
1611 uint8_t BitStream[MAX_GRAPH_TRACE_LEN]={0};
1612 size_t BitLen = getFromGraphBuf(BitStream);
1613 if (BitLen==0) return 0;
1614 uint8_t carrier=countFC(BitStream, BitLen, 0);
1615 if (carrier!=2 && carrier!=4 && carrier!=8){
1616 //invalid carrier
1617 return 0;
1618 }
1619 if (g_debugMode){
1620 PrintAndLog("Carrier: rf/%d",carrier);
1621 }
1622 int errCnt=0;
1623 errCnt = pskRawDemod(BitStream, &BitLen, &clk, &invert);
1624 if (errCnt > maxErr){
1625 if (g_debugMode || verbose) PrintAndLog("Too many errors found, clk: %d, invert: %d, numbits: %d, errCnt: %d",clk,invert,BitLen,errCnt);
1626 return 0;
1627 }
1628 if (errCnt<0|| BitLen<16){ //throw away static - allow 1 and -1 (in case of threshold command first)
1629 if (g_debugMode || verbose) PrintAndLog("no data found, clk: %d, invert: %d, numbits: %d, errCnt: %d",clk,invert,BitLen,errCnt);
1630 return 0;
1631 }
1632 if (verbose || g_debugMode){
1633 PrintAndLog("\nUsing Clock:%d, invert:%d, Bits Found:%d",clk,invert,BitLen);
1634 if (errCnt>0){
1635 PrintAndLog("# Errors during Demoding (shown as 7 in bit stream): %d",errCnt);
1636 }
1637 }
1638 //prime demod buffer for output
1639 setDemodBuf(BitStream,BitLen,0);
1640 return 1;
1641 }
1642
1643 // Indala 26 bit decode
1644 // by marshmellow
1645 // optional arguments - same as CmdpskNRZrawDemod (clock & invert)
1646 int CmdIndalaDecode(const char *Cmd)
1647 {
1648 int ans;
1649 if (strlen(Cmd)>0){
1650 ans = PSKDemod(Cmd, 0);
1651 } else{ //default to RF/32
1652 ans = PSKDemod("32", 0);
1653 }
1654
1655 if (!ans){
1656 if (g_debugMode==1)
1657 PrintAndLog("Error1: %d",ans);
1658 return 0;
1659 }
1660 uint8_t invert=0;
1661 size_t size = DemodBufferLen;
1662 size_t startIdx = indala26decode(DemodBuffer, &size, &invert);
1663 if (startIdx < 1 || size > 224) {
1664 if (g_debugMode==1)
1665 PrintAndLog("Error2: %d",ans);
1666 return -1;
1667 }
1668 setDemodBuf(DemodBuffer, size, startIdx);
1669 if (invert)
1670 if (g_debugMode==1)
1671 PrintAndLog("Had to invert bits");
1672
1673 PrintAndLog("BitLen: %d",DemodBufferLen);
1674 //convert UID to HEX
1675 uint32_t uid1, uid2, uid3, uid4, uid5, uid6, uid7;
1676 uid1=bytebits_to_byte(DemodBuffer,32);
1677 uid2=bytebits_to_byte(DemodBuffer+32,32);
1678 if (DemodBufferLen==64) {
1679 PrintAndLog("Indala UID=%s (%x%08x)", sprint_bin_break(DemodBuffer,DemodBufferLen,16), uid1, uid2);
1680 } else {
1681 uid3=bytebits_to_byte(DemodBuffer+64,32);
1682 uid4=bytebits_to_byte(DemodBuffer+96,32);
1683 uid5=bytebits_to_byte(DemodBuffer+128,32);
1684 uid6=bytebits_to_byte(DemodBuffer+160,32);
1685 uid7=bytebits_to_byte(DemodBuffer+192,32);
1686 PrintAndLog("Indala UID=%s (%x%08x%08x%08x%08x%08x%08x)",
1687 sprint_bin_break(DemodBuffer,DemodBufferLen,16), uid1, uid2, uid3, uid4, uid5, uid6, uid7);
1688 }
1689 if (g_debugMode){
1690 PrintAndLog("DEBUG: printing demodbuffer:");
1691 printDemodBuff();
1692 }
1693 return 1;
1694 }
1695
1696 int CmdPSKNexWatch(const char *Cmd)
1697 {
1698 if (!PSKDemod("", false)) return 0;
1699 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};
1700 size_t startIdx = 0, size = DemodBufferLen;
1701 bool invert = false;
1702 if (!preambleSearch(DemodBuffer, preamble, sizeof(preamble), &size, &startIdx)){
1703 // if didn't find preamble try again inverting
1704 if (!PSKDemod("1", false)) return 0;
1705 size = DemodBufferLen;
1706 if (!preambleSearch(DemodBuffer, preamble, sizeof(preamble), &size, &startIdx)) return 0;
1707 invert = true;
1708 }
1709 if (size != 128) return 0;
1710 setDemodBuf(DemodBuffer, size, startIdx+4);
1711 startIdx = 8+32; //4 = extra i added, 8 = preamble, 32 = reserved bits (always 0)
1712 //get ID
1713 uint32_t ID = 0;
1714 for (uint8_t wordIdx=0; wordIdx<4; wordIdx++){
1715 for (uint8_t idx=0; idx<8; idx++){
1716 ID = (ID << 1) | DemodBuffer[startIdx+wordIdx+(idx*4)];
1717 }
1718 }
1719 //parity check (TBD)
1720
1721 //checksum check (TBD)
1722
1723 //output
1724 PrintAndLog("NexWatch ID: %d", ID);
1725 if (invert){
1726 PrintAndLog("Had to Invert - probably NexKey");
1727 for (uint8_t idx=0; idx<size; idx++)
1728 DemodBuffer[idx] ^= 1;
1729 }
1730
1731 CmdPrintDemodBuff("x");
1732 return 1;
1733 }
1734
1735 // by marshmellow
1736 // takes 3 arguments - clock, invert, maxErr as integers
1737 // attempts to demodulate nrz only
1738 // prints binary found and saves in demodbuffer for further commands
1739 int NRZrawDemod(const char *Cmd, bool verbose)
1740 {
1741 int invert=0;
1742 int clk=0;
1743 int maxErr=100;
1744 sscanf(Cmd, "%i %i %i", &clk, &invert, &maxErr);
1745 if (clk==1){
1746 invert=1;
1747 clk=0;
1748 }
1749 if (invert != 0 && invert != 1) {
1750 PrintAndLog("Invalid argument: %s", Cmd);
1751 return 0;
1752 }
1753 uint8_t BitStream[MAX_GRAPH_TRACE_LEN]={0};
1754 size_t BitLen = getFromGraphBuf(BitStream);
1755 if (BitLen==0) return 0;
1756 int errCnt=0;
1757 errCnt = nrzRawDemod(BitStream, &BitLen, &clk, &invert);
1758 if (errCnt > maxErr){
1759 if (g_debugMode) PrintAndLog("Too many errors found, clk: %d, invert: %d, numbits: %d, errCnt: %d",clk,invert,BitLen,errCnt);
1760 return 0;
1761 }
1762 if (errCnt<0 || BitLen<16){ //throw away static - allow 1 and -1 (in case of threshold command first)
1763 if (g_debugMode) PrintAndLog("no data found, clk: %d, invert: %d, numbits: %d, errCnt: %d",clk,invert,BitLen,errCnt);
1764 return 0;
1765 }
1766 if (verbose || g_debugMode) PrintAndLog("Tried NRZ Demod using Clock: %d - invert: %d - Bits Found: %d",clk,invert,BitLen);
1767 //prime demod buffer for output
1768 setDemodBuf(BitStream,BitLen,0);
1769
1770 if (errCnt>0 && (verbose || g_debugMode)) PrintAndLog("# Errors during Demoding (shown as 7 in bit stream): %d",errCnt);
1771 if (verbose || g_debugMode) {
1772 PrintAndLog("NRZ demoded bitstream:");
1773 // Now output the bitstream to the scrollback by line of 16 bits
1774 printDemodBuff();
1775 }
1776 return 1;
1777 }
1778
1779 int CmdNRZrawDemod(const char *Cmd)
1780 {
1781 char cmdp = param_getchar(Cmd, 0);
1782 if (strlen(Cmd) > 10 || cmdp == 'h' || cmdp == 'H') {
1783 PrintAndLog("Usage: data rawdemod nr [clock] <0|1> [maxError]");
1784 PrintAndLog(" [set clock as integer] optional, if not set, autodetect.");
1785 PrintAndLog(" <invert>, 1 for invert output");
1786 PrintAndLog(" [set maximum allowed errors], default = 100.");
1787 PrintAndLog("");
1788 PrintAndLog(" sample: data rawdemod nr = demod a nrz/direct tag from GraphBuffer");
1789 PrintAndLog(" : data rawdemod nr 32 = demod a nrz/direct tag from GraphBuffer using a clock of RF/32");
1790 PrintAndLog(" : data rawdemod nr 32 1 = demod a nrz/direct tag from GraphBuffer using a clock of RF/32 and inverting data");
1791 PrintAndLog(" : data rawdemod nr 1 = demod a nrz/direct tag from GraphBuffer while inverting data");
1792 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");
1793 return 0;
1794 }
1795 return NRZrawDemod(Cmd, TRUE);
1796 }
1797
1798 // by marshmellow
1799 // takes 3 arguments - clock, invert, maxErr as integers
1800 // attempts to demodulate psk only
1801 // prints binary found and saves in demodbuffer for further commands
1802 int CmdPSK1rawDemod(const char *Cmd)
1803 {
1804 int ans;
1805 char cmdp = param_getchar(Cmd, 0);
1806 if (strlen(Cmd) > 10 || cmdp == 'h' || cmdp == 'H') {
1807 PrintAndLog("Usage: data rawdemod p1 [clock] <0|1> [maxError]");
1808 PrintAndLog(" [set clock as integer] optional, if not set, autodetect.");
1809 PrintAndLog(" <invert>, 1 for invert output");
1810 PrintAndLog(" [set maximum allowed errors], default = 100.");
1811 PrintAndLog("");
1812 PrintAndLog(" sample: data rawdemod p1 = demod a psk1 tag from GraphBuffer");
1813 PrintAndLog(" : data rawdemod p1 32 = demod a psk1 tag from GraphBuffer using a clock of RF/32");
1814 PrintAndLog(" : data rawdemod p1 32 1 = demod a psk1 tag from GraphBuffer using a clock of RF/32 and inverting data");
1815 PrintAndLog(" : data rawdemod p1 1 = demod a psk1 tag from GraphBuffer while inverting data");
1816 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");
1817 return 0;
1818 }
1819 ans = PSKDemod(Cmd, TRUE);
1820 //output
1821 if (!ans){
1822 if (g_debugMode) PrintAndLog("Error demoding: %d",ans);
1823 return 0;
1824 }
1825
1826 PrintAndLog("PSK1 demoded bitstream:");
1827 // Now output the bitstream to the scrollback by line of 16 bits
1828 printDemodBuff();
1829 return 1;
1830 }
1831
1832 // by marshmellow
1833 // takes same args as cmdpsk1rawdemod
1834 int CmdPSK2rawDemod(const char *Cmd)
1835 {
1836 int ans=0;
1837 char cmdp = param_getchar(Cmd, 0);
1838 if (strlen(Cmd) > 10 || cmdp == 'h' || cmdp == 'H') {
1839 PrintAndLog("Usage: data rawdemod p2 [clock] <0|1> [maxError]");
1840 PrintAndLog(" [set clock as integer] optional, if not set, autodetect.");
1841 PrintAndLog(" <invert>, 1 for invert output");
1842 PrintAndLog(" [set maximum allowed errors], default = 100.");
1843 PrintAndLog("");
1844 PrintAndLog(" sample: data rawdemod p2 = demod a psk2 tag from GraphBuffer, autodetect clock");
1845 PrintAndLog(" : data rawdemod p2 32 = demod a psk2 tag from GraphBuffer using a clock of RF/32");
1846 PrintAndLog(" : data rawdemod p2 32 1 = demod a psk2 tag from GraphBuffer using a clock of RF/32 and inverting output");
1847 PrintAndLog(" : data rawdemod p2 1 = demod a psk2 tag from GraphBuffer, autodetect clock and invert output");
1848 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");
1849 return 0;
1850 }
1851 ans=PSKDemod(Cmd, TRUE);
1852 if (!ans){
1853 if (g_debugMode) PrintAndLog("Error demoding: %d",ans);
1854 return 0;
1855 }
1856 psk1TOpsk2(DemodBuffer, DemodBufferLen);
1857 PrintAndLog("PSK2 demoded bitstream:");
1858 // Now output the bitstream to the scrollback by line of 16 bits
1859 printDemodBuff();
1860 return 1;
1861 }
1862
1863 // by marshmellow - combines all raw demod functions into one menu command
1864 int CmdRawDemod(const char *Cmd)
1865 {
1866 char cmdp = Cmd[0]; //param_getchar(Cmd, 0);
1867
1868 if (strlen(Cmd) > 20 || cmdp == 'h' || cmdp == 'H' || strlen(Cmd)<2) {
1869 PrintAndLog("Usage: data rawdemod [modulation] <help>|<options>");
1870 PrintAndLog(" [modulation] as 2 char, 'ab' for ask/biphase, 'am' for ask/manchester, 'ar' for ask/raw, 'fs' for fsk, ...");
1871 PrintAndLog(" 'nr' for nrz/direct, 'p1' for psk1, 'p2' for psk2");
1872 PrintAndLog(" <help> as 'h', prints the help for the specific modulation");
1873 PrintAndLog(" <options> see specific modulation help for optional parameters");
1874 PrintAndLog("");
1875 PrintAndLog(" sample: data rawdemod fs h = print help specific to fsk demod");
1876 PrintAndLog(" : data rawdemod fs = demod GraphBuffer using: fsk - autodetect");
1877 PrintAndLog(" : data rawdemod ab = demod GraphBuffer using: ask/biphase - autodetect");
1878 PrintAndLog(" : data rawdemod am = demod GraphBuffer using: ask/manchester - autodetect");
1879 PrintAndLog(" : data rawdemod ar = demod GraphBuffer using: ask/raw - autodetect");
1880 PrintAndLog(" : data rawdemod nr = demod GraphBuffer using: nrz/direct - autodetect");
1881 PrintAndLog(" : data rawdemod p1 = demod GraphBuffer using: psk1 - autodetect");
1882 PrintAndLog(" : data rawdemod p2 = demod GraphBuffer using: psk2 - autodetect");
1883 return 0;
1884 }
1885 char cmdp2 = Cmd[1];
1886 int ans = 0;
1887 if (cmdp == 'f' && cmdp2 == 's'){
1888 ans = CmdFSKrawdemod(Cmd+2);
1889 } else if(cmdp == 'a' && cmdp2 == 'b'){
1890 ans = Cmdaskbiphdemod(Cmd+2);
1891 } else if(cmdp == 'a' && cmdp2 == 'm'){
1892 ans = Cmdaskmandemod(Cmd+2);
1893 } else if(cmdp == 'a' && cmdp2 == 'r'){
1894 ans = Cmdaskrawdemod(Cmd+2);
1895 } else if(cmdp == 'n' && cmdp2 == 'r'){
1896 ans = CmdNRZrawDemod(Cmd+2);
1897 } else if(cmdp == 'p' && cmdp2 == '1'){
1898 ans = CmdPSK1rawDemod(Cmd+2);
1899 } else if(cmdp == 'p' && cmdp2 == '2'){
1900 ans = CmdPSK2rawDemod(Cmd+2);
1901 } else {
1902 PrintAndLog("unknown modulation entered - see help ('h') for parameter structure");
1903 }
1904 return ans;
1905 }
1906
1907 int CmdGrid(const char *Cmd)
1908 {
1909 sscanf(Cmd, "%i %i", &PlotGridX, &PlotGridY);
1910 PlotGridXdefault= PlotGridX;
1911 PlotGridYdefault= PlotGridY;
1912 RepaintGraphWindow();
1913 return 0;
1914 }
1915
1916 int CmdHexsamples(const char *Cmd)
1917 {
1918 int i, j;
1919 int requested = 0;
1920 int offset = 0;
1921 char string_buf[25];
1922 char* string_ptr = string_buf;
1923 uint8_t got[BIGBUF_SIZE];
1924
1925 sscanf(Cmd, "%i %i", &requested, &offset);
1926
1927 /* if no args send something */
1928 if (requested == 0) {
1929 requested = 8;
1930 }
1931 if (offset + requested > sizeof(got)) {
1932 PrintAndLog("Tried to read past end of buffer, <bytes> + <offset> > %d", BIGBUF_SIZE);
1933 return 0;
1934 }
1935
1936 GetFromBigBuf(got,requested,offset);
1937 WaitForResponse(CMD_ACK,NULL);
1938
1939 i = 0;
1940 for (j = 0; j < requested; j++) {
1941 i++;
1942 string_ptr += sprintf(string_ptr, "%02x ", got[j]);
1943 if (i == 8) {
1944 *(string_ptr - 1) = '\0'; // remove the trailing space
1945 PrintAndLog("%s", string_buf);
1946 string_buf[0] = '\0';
1947 string_ptr = string_buf;
1948 i = 0;
1949 }
1950 if (j == requested - 1 && string_buf[0] != '\0') { // print any remaining bytes
1951 *(string_ptr - 1) = '\0';
1952 PrintAndLog("%s", string_buf);
1953 string_buf[0] = '\0';
1954 }
1955 }
1956 return 0;
1957 }
1958
1959 int CmdHide(const char *Cmd)
1960 {
1961 HideGraphWindow();
1962 return 0;
1963 }
1964
1965 //zero mean GraphBuffer
1966 int CmdHpf(const char *Cmd)
1967 {
1968 int i;
1969 int accum = 0;
1970
1971 for (i = 10; i < GraphTraceLen; ++i)
1972 accum += GraphBuffer[i];
1973 accum /= (GraphTraceLen - 10);
1974 for (i = 0; i < GraphTraceLen; ++i)
1975 GraphBuffer[i] -= accum;
1976
1977 RepaintGraphWindow();
1978 return 0;
1979 }
1980
1981 uint8_t getByte(uint8_t bits_per_sample, BitstreamIn* b)
1982 {
1983 int i;
1984 uint8_t val = 0;
1985 for(i =0 ; i < bits_per_sample; i++)
1986 {
1987 val |= (headBit(b) << (7-i));
1988 }
1989 return val;
1990 }
1991
1992 int getSamples(const char *Cmd, bool silent)
1993 {
1994 //If we get all but the last byte in bigbuf,
1995 // we don't have to worry about remaining trash
1996 // in the last byte in case the bits-per-sample
1997 // does not line up on byte boundaries
1998
1999 uint8_t got[BIGBUF_SIZE-1] = { 0 };
2000
2001 int n = strtol(Cmd, NULL, 0);
2002
2003 if (n == 0 || n > sizeof(got))
2004 n = sizeof(got);
2005
2006 PrintAndLog("Reading %d bytes from device memory\n", n);
2007 GetFromBigBuf(got,n,0);
2008 PrintAndLog("Data fetched");
2009 UsbCommand response;
2010 WaitForResponse(CMD_ACK, &response);
2011 uint8_t bits_per_sample = 8;
2012
2013 //Old devices without this feature would send 0 at arg[0]
2014 if(response.arg[0] > 0)
2015 {
2016 sample_config *sc = (sample_config *) response.d.asBytes;
2017 PrintAndLog("Samples @ %d bits/smpl, decimation 1:%d ", sc->bits_per_sample
2018 , sc->decimation);
2019 bits_per_sample = sc->bits_per_sample;
2020 }
2021 if(bits_per_sample < 8)
2022 {
2023 PrintAndLog("Unpacking...");
2024 BitstreamIn bout = { got, bits_per_sample * n, 0};
2025 int j =0;
2026 for (j = 0; j * bits_per_sample < n * 8 && j < n; j++) {
2027 uint8_t sample = getByte(bits_per_sample, &bout);
2028 GraphBuffer[j] = ((int) sample )- 128;
2029 }
2030 GraphTraceLen = j;
2031 PrintAndLog("Unpacked %d samples" , j );
2032 }else
2033 {
2034 for (int j = 0; j < n; j++) {
2035 GraphBuffer[j] = ((int)got[j]) - 128;
2036 }
2037 GraphTraceLen = n;
2038 }
2039
2040 RepaintGraphWindow();
2041 return 0;
2042 }
2043
2044 int CmdSamples(const char *Cmd)
2045 {
2046 return getSamples(Cmd, false);
2047 }
2048
2049 int CmdTuneSamples(const char *Cmd)
2050 {
2051 int timeout = 0, arg = FLAG_TUNE_ALL;
2052
2053 if(*Cmd == 'l') {
2054 arg = FLAG_TUNE_LF;
2055 } else if (*Cmd == 'h') {
2056 arg = FLAG_TUNE_HF;
2057 } else if (*Cmd != '\0') {
2058 PrintAndLog("use 'tune' or 'tune l' or 'tune h'");
2059 return 0;
2060 }
2061
2062 printf("\nMeasuring antenna characteristics, please wait...");
2063
2064 UsbCommand c = {CMD_MEASURE_ANTENNA_TUNING, {arg, 0, 0}};
2065 SendCommand(&c);
2066
2067 UsbCommand resp;
2068 while(!WaitForResponseTimeout(CMD_MEASURED_ANTENNA_TUNING,&resp,1000)) {
2069 timeout++;
2070 printf(".");
2071 if (timeout > 7) {
2072 PrintAndLog("\nNo response from Proxmark. Aborting...");
2073 return 1;
2074 }
2075 }
2076
2077 int peakv, peakf;
2078 int vLf125, vLf134, vHf;
2079 vLf125 = resp.arg[0] & 0xffff;
2080 vLf134 = resp.arg[0] >> 16;
2081 vHf = resp.arg[1] & 0xffff;;
2082 peakf = resp.arg[2] & 0xffff;
2083 peakv = resp.arg[2] >> 16;
2084 PrintAndLog("");
2085 PrintAndLog("# LF antenna: %5.2f V @ 125.00 kHz", vLf125/1000.0);
2086 PrintAndLog("# LF antenna: %5.2f V @ 134.00 kHz", vLf134/1000.0);
2087 PrintAndLog("# LF optimal: %5.2f V @%9.2f kHz", peakv/1000.0, 12000.0/(peakf+1));
2088 PrintAndLog("# HF antenna: %5.2f V @ 13.56 MHz", vHf/1000.0);
2089
2090 #define LF_UNUSABLE_V 2948 // was 2000. Changed due to bugfix in voltage measurements. LF results are now 47% higher.
2091 #define LF_MARGINAL_V 14739 // was 10000. Changed due to bugfix bug in voltage measurements. LF results are now 47% higher.
2092 #define HF_UNUSABLE_V 3167 // was 2000. Changed due to bugfix in voltage measurements. HF results are now 58% higher.
2093 #define HF_MARGINAL_V 7917 // was 5000. Changed due to bugfix in voltage measurements. HF results are now 58% higher.
2094
2095 if (peakv < LF_UNUSABLE_V)
2096 PrintAndLog("# Your LF antenna is unusable.");
2097 else if (peakv < LF_MARGINAL_V)
2098 PrintAndLog("# Your LF antenna is marginal.");
2099 if (vHf < HF_UNUSABLE_V)
2100 PrintAndLog("# Your HF antenna is unusable.");
2101 else if (vHf < HF_MARGINAL_V)
2102 PrintAndLog("# Your HF antenna is marginal.");
2103
2104 if (peakv >= LF_UNUSABLE_V) {
2105 for (int i = 0; i < 256; i++) {
2106 GraphBuffer[i] = resp.d.asBytes[i] - 128;
2107 }
2108 PrintAndLog("Displaying LF tuning graph. Divisor 89 is 134khz, 95 is 125khz.\n");
2109 PrintAndLog("\n");
2110 GraphTraceLen = 256;
2111 ShowGraphWindow();
2112 RepaintGraphWindow();
2113 }
2114
2115 return 0;
2116 }
2117
2118
2119 int CmdLoad(const char *Cmd)
2120 {
2121 char filename[FILE_PATH_SIZE] = {0x00};
2122 int len = 0;
2123
2124 len = strlen(Cmd);
2125 if (len > FILE_PATH_SIZE) len = FILE_PATH_SIZE;
2126 memcpy(filename, Cmd, len);
2127
2128 FILE *f = fopen(filename, "r");
2129 if (!f) {
2130 PrintAndLog("couldn't open '%s'", filename);
2131 return 0;
2132 }
2133
2134 GraphTraceLen = 0;
2135 char line[80];
2136 while (fgets(line, sizeof (line), f)) {
2137 GraphBuffer[GraphTraceLen] = atoi(line);
2138 GraphTraceLen++;
2139 }
2140 fclose(f);
2141 PrintAndLog("loaded %d samples", GraphTraceLen);
2142 RepaintGraphWindow();
2143 return 0;
2144 }
2145
2146 int CmdLtrim(const char *Cmd)
2147 {
2148 int ds = atoi(Cmd);
2149 if (GraphTraceLen<=0) return 0;
2150 for (int i = ds; i < GraphTraceLen; ++i)
2151 GraphBuffer[i-ds] = GraphBuffer[i];
2152 GraphTraceLen -= ds;
2153
2154 RepaintGraphWindow();
2155 return 0;
2156 }
2157
2158 // trim graph to input argument length
2159 int CmdRtrim(const char *Cmd)
2160 {
2161 int ds = atoi(Cmd);
2162
2163 GraphTraceLen = ds;
2164
2165 RepaintGraphWindow();
2166 return 0;
2167 }
2168
2169 int CmdNorm(const char *Cmd)
2170 {
2171 int i;
2172 int max = INT_MIN, min = INT_MAX;
2173
2174 for (i = 10; i < GraphTraceLen; ++i) {
2175 if (GraphBuffer[i] > max)
2176 max = GraphBuffer[i];
2177 if (GraphBuffer[i] < min)
2178 min = GraphBuffer[i];
2179 }
2180
2181 if (max != min) {
2182 for (i = 0; i < GraphTraceLen; ++i) {
2183 GraphBuffer[i] = (GraphBuffer[i] - ((max + min) / 2)) * 256 /
2184 (max - min);
2185 //marshmelow: adjusted *1000 to *256 to make +/- 128 so demod commands still work
2186 }
2187 }
2188 RepaintGraphWindow();
2189 return 0;
2190 }
2191
2192 int CmdPlot(const char *Cmd)
2193 {
2194 ShowGraphWindow();
2195 return 0;
2196 }
2197
2198 int CmdSave(const char *Cmd)
2199 {
2200 char filename[FILE_PATH_SIZE] = {0x00};
2201 int len = 0;
2202
2203 len = strlen(Cmd);
2204 if (len > FILE_PATH_SIZE) len = FILE_PATH_SIZE;
2205 memcpy(filename, Cmd, len);
2206
2207
2208 FILE *f = fopen(filename, "w");
2209 if(!f) {
2210 PrintAndLog("couldn't open '%s'", filename);
2211 return 0;
2212 }
2213 int i;
2214 for (i = 0; i < GraphTraceLen; i++) {
2215 fprintf(f, "%d\n", GraphBuffer[i]);
2216 }
2217 fclose(f);
2218 PrintAndLog("saved to '%s'", Cmd);
2219 return 0;
2220 }
2221
2222 int CmdScale(const char *Cmd)
2223 {
2224 CursorScaleFactor = atoi(Cmd);
2225 if (CursorScaleFactor == 0) {
2226 PrintAndLog("bad, can't have zero scale");
2227 CursorScaleFactor = 1;
2228 }
2229 RepaintGraphWindow();
2230 return 0;
2231 }
2232
2233 int CmdDirectionalThreshold(const char *Cmd)
2234 {
2235 int8_t upThres = param_get8(Cmd, 0);
2236 int8_t downThres = param_get8(Cmd, 1);
2237
2238 printf("Applying Up Threshold: %d, Down Threshold: %d\n", upThres, downThres);
2239
2240 int lastValue = GraphBuffer[0];
2241 GraphBuffer[0] = 0; // Will be changed at the end, but init 0 as we adjust to last samples value if no threshold kicks in.
2242
2243 for (int i = 1; i < GraphTraceLen; ++i) {
2244 // Apply first threshold to samples heading up
2245 if (GraphBuffer[i] >= upThres && GraphBuffer[i] > lastValue)
2246 {
2247 lastValue = GraphBuffer[i]; // Buffer last value as we overwrite it.
2248 GraphBuffer[i] = 1;
2249 }
2250 // Apply second threshold to samples heading down
2251 else if (GraphBuffer[i] <= downThres && GraphBuffer[i] < lastValue)
2252 {
2253 lastValue = GraphBuffer[i]; // Buffer last value as we overwrite it.
2254 GraphBuffer[i] = -1;
2255 }
2256 else
2257 {
2258 lastValue = GraphBuffer[i]; // Buffer last value as we overwrite it.
2259 GraphBuffer[i] = GraphBuffer[i-1];
2260
2261 }
2262 }
2263 GraphBuffer[0] = GraphBuffer[1]; // Aline with first edited sample.
2264 RepaintGraphWindow();
2265 return 0;
2266 }
2267
2268 int CmdZerocrossings(const char *Cmd)
2269 {
2270 // Zero-crossings aren't meaningful unless the signal is zero-mean.
2271 CmdHpf("");
2272
2273 int sign = 1;
2274 int zc = 0;
2275 int lastZc = 0;
2276
2277 for (int i = 0; i < GraphTraceLen; ++i) {
2278 if (GraphBuffer[i] * sign >= 0) {
2279 // No change in sign, reproduce the previous sample count.
2280 zc++;
2281 GraphBuffer[i] = lastZc;
2282 } else {
2283 // Change in sign, reset the sample count.
2284 sign = -sign;
2285 GraphBuffer[i] = lastZc;
2286 if (sign > 0) {
2287 lastZc = zc;
2288 zc = 0;
2289 }
2290 }
2291 }
2292
2293 RepaintGraphWindow();
2294 return 0;
2295 }
2296
2297 int usage_data_bin2hex(){
2298 PrintAndLog("Usage: data bin2hex <binary_digits>");
2299 PrintAndLog(" This function will ignore all characters not 1 or 0 (but stop reading on whitespace)");
2300 return 0;
2301 }
2302
2303 /**
2304 * @brief Utility for conversion via cmdline.
2305 * @param Cmd
2306 * @return
2307 */
2308 int Cmdbin2hex(const char *Cmd)
2309 {
2310 int bg =0, en =0;
2311 if(param_getptr(Cmd, &bg, &en, 0))
2312 {
2313 return usage_data_bin2hex();
2314 }
2315 //Number of digits supplied as argument
2316 size_t length = en - bg +1;
2317 size_t bytelen = (length+7) / 8;
2318 uint8_t* arr = (uint8_t *) malloc(bytelen);
2319 memset(arr, 0, bytelen);
2320 BitstreamOut bout = { arr, 0, 0 };
2321
2322 for(; bg <= en ;bg++)
2323 {
2324 char c = Cmd[bg];
2325 if( c == '1') pushBit(&bout, 1);
2326 else if( c == '0') pushBit(&bout, 0);
2327 else PrintAndLog("Ignoring '%c'", c);
2328 }
2329
2330 if(bout.numbits % 8 != 0)
2331 {
2332 printf("[padded with %d zeroes]\n", 8-(bout.numbits % 8));
2333 }
2334
2335 //Uses printf instead of PrintAndLog since the latter
2336 // adds linebreaks to each printout - this way was more convenient since we don't have to
2337 // allocate a string and write to that first...
2338 for(size_t x = 0; x < bytelen ; x++)
2339 {
2340 printf("%02X", arr[x]);
2341 }
2342 printf("\n");
2343 free(arr);
2344 return 0;
2345 }
2346
2347 int usage_data_hex2bin(){
2348
2349 PrintAndLog("Usage: data bin2hex <binary_digits>");
2350 PrintAndLog(" This function will ignore all non-hexadecimal characters (but stop reading on whitespace)");
2351 return 0;
2352
2353 }
2354
2355 int Cmdhex2bin(const char *Cmd)
2356 {
2357 int bg =0, en =0;
2358 if(param_getptr(Cmd, &bg, &en, 0))
2359 {
2360 return usage_data_hex2bin();
2361 }
2362
2363
2364 while(bg <= en )
2365 {
2366 char x = Cmd[bg++];
2367 // capitalize
2368 if (x >= 'a' && x <= 'f')
2369 x -= 32;
2370 // convert to numeric value
2371 if (x >= '0' && x <= '9')
2372 x -= '0';
2373 else if (x >= 'A' && x <= 'F')
2374 x -= 'A' - 10;
2375 else
2376 continue;
2377
2378 //Uses printf instead of PrintAndLog since the latter
2379 // adds linebreaks to each printout - this way was more convenient since we don't have to
2380 // allocate a string and write to that first...
2381
2382 for(int i= 0 ; i < 4 ; ++i)
2383 printf("%d",(x >> (3 - i)) & 1);
2384 }
2385 printf("\n");
2386
2387 return 0;
2388 }
2389
2390 static command_t CommandTable[] =
2391 {
2392 {"help", CmdHelp, 1, "This help"},
2393 {"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)"},
2394 {"askem410xdemod", CmdAskEM410xDemod, 1, "[clock] [invert<0|1>] [maxErr] -- Demodulate an EM410x tag from GraphBuffer (args optional)"},
2395 {"askgproxiidemod", CmdG_Prox_II_Demod, 1, "Demodulate a G Prox II tag from GraphBuffer"},
2396 {"askvikingdemod", CmdVikingDemod, 1, "Demodulate a Viking tag from GraphBuffer"},
2397 {"autocorr", CmdAutoCorr, 1, "[window length] [g] -- Autocorrelation over window - g to save back to GraphBuffer (overwrite)"},
2398 {"biphaserawdecode",CmdBiphaseDecodeRaw,1, "[offset] [invert<0|1>] [maxErr] -- Biphase decode bin stream in DemodBuffer (offset = 0|1 bits to shift the decode start)"},
2399 {"bin2hex", Cmdbin2hex, 1, "bin2hex <digits> -- Converts binary to hexadecimal"},
2400 {"bitsamples", CmdBitsamples, 0, "Get raw samples as bitstring"},
2401 {"buffclear", CmdBuffClear, 1, "Clear sample buffer and graph window"},
2402 {"dec", CmdDec, 1, "Decimate samples"},
2403 {"detectclock", CmdDetectClockRate, 1, "[modulation] Detect clock rate of wave in GraphBuffer (options: 'a','f','n','p' for ask, fsk, nrz, psk respectively)"},
2404 {"fdxbdemod", CmdFDXBdemodBI , 1, "Demodulate a FDX-B ISO11784/85 Biphase tag from GraphBuffer"},
2405 {"fskawiddemod", CmdFSKdemodAWID, 1, "Demodulate an AWID FSK tag from GraphBuffer"},
2406 //{"fskfcdetect", CmdFSKfcDetect, 1, "Try to detect the Field Clock of an FSK wave"},
2407 {"fskhiddemod", CmdFSKdemodHID, 1, "Demodulate a HID FSK tag from GraphBuffer"},
2408 {"fskiodemod", CmdFSKdemodIO, 1, "Demodulate an IO Prox FSK tag from GraphBuffer"},
2409 {"fskpyramiddemod", CmdFSKdemodPyramid, 1, "Demodulate a Pyramid FSK tag from GraphBuffer"},
2410 {"fskparadoxdemod", CmdFSKdemodParadox, 1, "Demodulate a Paradox FSK tag from GraphBuffer"},
2411 {"getbitstream", CmdGetBitStream, 1, "Convert GraphBuffer's >=1 values to 1 and <1 to 0"},
2412 {"grid", CmdGrid, 1, "<x> <y> -- overlay grid on graph window, use zero value to turn off either"},
2413 {"hexsamples", CmdHexsamples, 0, "<bytes> [<offset>] -- Dump big buffer as hex bytes"},
2414 {"hex2bin", Cmdhex2bin, 1, "hex2bin <hexadecimal> -- Converts hexadecimal to binary"},
2415 {"hide", CmdHide, 1, "Hide graph window"},
2416 {"hpf", CmdHpf, 1, "Remove DC offset from trace"},
2417 {"load", CmdLoad, 1, "<filename> -- Load trace (to graph window"},
2418 {"ltrim", CmdLtrim, 1, "<samples> -- Trim samples from left of trace"},
2419 {"rtrim", CmdRtrim, 1, "<location to end trace> -- Trim samples from right of trace"},
2420 {"manrawdecode", Cmdmandecoderaw, 1, "[invert] [maxErr] -- Manchester decode binary stream in DemodBuffer"},
2421 {"norm", CmdNorm, 1, "Normalize max/min to +/-128"},
2422 {"plot", CmdPlot, 1, "Show graph window (hit 'h' in window for keystroke help)"},
2423 {"printdemodbuffer",CmdPrintDemodBuff, 1, "[x] [o] <offset> [l] <length> -- print the data in the DemodBuffer - 'x' for hex output"},
2424 {"pskindalademod", CmdIndalaDecode, 1, "[clock] [invert<0|1>] -- Demodulate an indala tag (PSK1) from GraphBuffer (args optional)"},
2425 {"psknexwatchdemod",CmdPSKNexWatch, 1, "Demodulate a NexWatch tag (nexkey, quadrakey) (PSK1) from GraphBuffer"},
2426 {"rawdemod", CmdRawDemod, 1, "[modulation] ... <options> -see help (h option) -- Demodulate the data in the GraphBuffer and output binary"},
2427 {"samples", CmdSamples, 0, "[512 - 40000] -- Get raw samples for graph window (GraphBuffer)"},
2428 {"save", CmdSave, 1, "<filename> -- Save trace (from graph window)"},
2429 {"scale", CmdScale, 1, "<int> -- Set cursor display scale"},
2430 {"setdebugmode", CmdSetDebugMode, 1, "<0|1|2> -- Turn on or off Debugging Level for lf demods"},
2431 {"shiftgraphzero", CmdGraphShiftZero, 1, "<shift> -- Shift 0 for Graphed wave + or - shift value"},
2432 {"dirthreshold", CmdDirectionalThreshold, 1, "<thres up> <thres down> -- Max rising higher up-thres/ Min falling lower down-thres, keep rest as prev."},
2433 {"tune", CmdTuneSamples, 0, "Get hw tune samples for graph window"},
2434 {"undec", CmdUndec, 1, "Un-decimate samples by 2"},
2435 {"zerocrossings", CmdZerocrossings, 1, "Count time between zero-crossings"},
2436 {NULL, NULL, 0, NULL}
2437 };
2438
2439 int CmdData(const char *Cmd)
2440 {
2441 CmdsParse(CommandTable, Cmd);
2442 return 0;
2443 }
2444
2445 int CmdHelp(const char *Cmd)
2446 {
2447 CmdsHelp(CommandTable);
2448 return 0;
2449 }
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