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CHG: help text changes in cmdlfjablotron.c
[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> // also included in util.h
12 #include <string.h> // also included in util.h
13 #include <limits.h> // for CmdNorm INT_MIN && INT_MAX
14 #include "data.h" // also included in util.h
15 #include "cmddata.h"
16 #include "util.h"
17 #include "cmdmain.h"
18 #include "proxmark3.h"
19 #include "ui.h" // for show graph controls
20 #include "graph.h" // for graph data
21 #include "cmdparser.h"// already included in cmdmain.h
22 #include "usb_cmd.h" // already included in cmdmain.h and proxmark3.h
23 #include "lfdemod.h" // for demod code
24 #include "crc.h" // for pyramid checksum maxim
25 #include "crc16.h" // for FDXB demod checksum
26 #include "loclass/cipherutils.h" // for decimating samples in getsamples
27
28 uint8_t DemodBuffer[MAX_DEMOD_BUF_LEN];
29 uint8_t g_debugMode=0;
30 size_t DemodBufferLen=0;
31 static int CmdHelp(const char *Cmd);
32
33 //set the demod buffer with given array of binary (one bit per byte)
34 //by marshmellow
35 void setDemodBuf(uint8_t *buff, size_t size, size_t startIdx)
36 {
37 if (buff == NULL)
38 return;
39
40 if ( size >= MAX_DEMOD_BUF_LEN)
41 size = MAX_DEMOD_BUF_LEN;
42
43 size_t i = 0;
44 for (; i < size; i++){
45 DemodBuffer[i]=buff[startIdx++];
46 }
47 DemodBufferLen=size;
48 return;
49 }
50
51 int CmdSetDebugMode(const char *Cmd)
52 {
53 int demod=0;
54 sscanf(Cmd, "%i", &demod);
55 g_debugMode=(uint8_t)demod;
56 return 1;
57 }
58
59 int usage_data_printdemodbuf(){
60 PrintAndLog("Usage: data printdemodbuffer x o <offset> l <length>");
61 PrintAndLog("Options:");
62 PrintAndLog(" h This help");
63 PrintAndLog(" x output in hex (omit for binary output)");
64 PrintAndLog(" o <offset> enter offset in # of bits");
65 PrintAndLog(" l <length> enter length to print in # of bits or hex characters respectively");
66 return 0;
67 }
68
69 //by marshmellow
70 void printDemodBuff(void)
71 {
72 int bitLen = DemodBufferLen;
73 if (bitLen<1) {
74 PrintAndLog("no bits found in demod buffer");
75 return;
76 }
77 if (bitLen>512) bitLen=512; //max output to 512 bits if we have more - should be plenty
78
79 char *bin = sprint_bin_break(DemodBuffer, bitLen,16);
80 PrintAndLog("%s",bin);
81
82 return;
83 }
84
85 int CmdPrintDemodBuff(const char *Cmd)
86 {
87 char hex[512]={0x00};
88 bool hexMode = false;
89 bool errors = false;
90 uint32_t offset = 0; //could be size_t but no param_get16...
91 uint32_t length = 512;
92 char cmdp = 0;
93 while(param_getchar(Cmd, cmdp) != 0x00)
94 {
95 switch(param_getchar(Cmd, cmdp))
96 {
97 case 'h':
98 case 'H':
99 return usage_data_printdemodbuf();
100 case 'x':
101 case 'X':
102 hexMode = true;
103 cmdp++;
104 break;
105 case 'o':
106 case 'O':
107 offset = param_get32ex(Cmd, cmdp+1, 0, 10);
108 if (!offset) errors = true;
109 cmdp += 2;
110 break;
111 case 'l':
112 case 'L':
113 length = param_get32ex(Cmd, cmdp+1, 512, 10);
114 if (!length) errors = true;
115 cmdp += 2;
116 break;
117 default:
118 PrintAndLog("Unknown parameter '%c'", param_getchar(Cmd, cmdp));
119 errors = true;
120 break;
121 }
122 if(errors) break;
123 }
124 //Validations
125 if(errors) return usage_data_printdemodbuf();
126 length = (length > (DemodBufferLen-offset)) ? DemodBufferLen-offset : length;
127 int numBits = (length) & 0x00FFC; //make sure we don't exceed our string
128
129 if (hexMode){
130 char *buf = (char *) (DemodBuffer + offset);
131 numBits = (numBits > sizeof(hex)) ? sizeof(hex) : numBits;
132 numBits = binarraytohex(hex, buf, numBits);
133 if (numBits==0) return 0;
134 PrintAndLog("DemodBuffer: %s",hex);
135 } else {
136 PrintAndLog("DemodBuffer:\n%s", sprint_bin_break(DemodBuffer+offset,numBits,16));
137 }
138 return 1;
139 }
140
141 //by marshmellow
142 //this function strictly converts >1 to 1 and <1 to 0 for each sample in the graphbuffer
143 int CmdGetBitStream(const char *Cmd)
144 {
145 int i;
146 CmdHpf(Cmd);
147 for (i = 0; i < GraphTraceLen; i++) {
148 if (GraphBuffer[i] >= 1) {
149 GraphBuffer[i] = 1;
150 } else {
151 GraphBuffer[i] = 0;
152 }
153 }
154 RepaintGraphWindow();
155 return 0;
156 }
157
158 //by marshmellow
159 //print 64 bit EM410x ID in multiple formats
160 void printEM410x(uint32_t hi, uint64_t id)
161 {
162 if (id || hi){
163 uint64_t iii=1;
164 uint64_t id2lo=0;
165 uint32_t ii=0;
166 uint32_t i=0;
167 for (ii=5; ii>0;ii--){
168 for (i=0;i<8;i++){
169 id2lo=(id2lo<<1LL) | ((id & (iii << (i+((ii-1)*8)))) >> (i+((ii-1)*8)));
170 }
171 }
172 if (hi){
173 //output 88 bit em id
174 PrintAndLog("\nEM TAG ID : %06X%016llX", hi, id);
175 } else{
176 //output 40 bit em id
177 PrintAndLog("\nEM TAG ID : %010llX", id);
178 PrintAndLog("Unique TAG ID : %010llX", id2lo);
179 PrintAndLog("\nPossible de-scramble patterns");
180 PrintAndLog("HoneyWell IdentKey {");
181 PrintAndLog("DEZ 8 : %08lld",id & 0xFFFFFF);
182 PrintAndLog("DEZ 10 : %010lld",id & 0xFFFFFFFF);
183 PrintAndLog("DEZ 5.5 : %05lld.%05lld",(id>>16LL) & 0xFFFF,(id & 0xFFFF));
184 PrintAndLog("DEZ 3.5A : %03lld.%05lld",(id>>32ll),(id & 0xFFFF));
185 PrintAndLog("DEZ 3.5B : %03lld.%05lld",(id & 0xFF000000) >> 24,(id & 0xFFFF));
186 PrintAndLog("DEZ 3.5C : %03lld.%05lld",(id & 0xFF0000) >> 16,(id & 0xFFFF));
187 PrintAndLog("DEZ 14/IK2 : %014lld",id);
188 PrintAndLog("DEZ 15/IK3 : %015lld",id2lo);
189 PrintAndLog("DEZ 20/ZK : %02lld%02lld%02lld%02lld%02lld%02lld%02lld%02lld%02lld%02lld",
190 (id2lo & 0xf000000000) >> 36,
191 (id2lo & 0x0f00000000) >> 32,
192 (id2lo & 0x00f0000000) >> 28,
193 (id2lo & 0x000f000000) >> 24,
194 (id2lo & 0x0000f00000) >> 20,
195 (id2lo & 0x00000f0000) >> 16,
196 (id2lo & 0x000000f000) >> 12,
197 (id2lo & 0x0000000f00) >> 8,
198 (id2lo & 0x00000000f0) >> 4,
199 (id2lo & 0x000000000f)
200 );
201 uint64_t paxton = (((id>>32) << 24) | (id & 0xffffff)) + 0x143e00;
202 PrintAndLog("}\nOther : %05lld_%03lld_%08lld",(id&0xFFFF),((id>>16LL) & 0xFF),(id & 0xFFFFFF));
203 PrintAndLog("Pattern Paxton : %lld [0x%llX]", paxton, paxton);
204
205 uint32_t p1id = (id & 0xFFFFFF);
206 uint8_t arr[32] = {0x00};
207 int i =0;
208 int j = 23;
209 for (; i < 24; ++i, --j ){
210 arr[i] = (p1id >> i) & 1;
211 }
212
213 uint32_t p1 = 0;
214
215 p1 |= arr[23] << 21;
216 p1 |= arr[22] << 23;
217 p1 |= arr[21] << 20;
218 p1 |= arr[20] << 22;
219
220 p1 |= arr[19] << 18;
221 p1 |= arr[18] << 16;
222 p1 |= arr[17] << 19;
223 p1 |= arr[16] << 17;
224
225 p1 |= arr[15] << 13;
226 p1 |= arr[14] << 15;
227 p1 |= arr[13] << 12;
228 p1 |= arr[12] << 14;
229
230 p1 |= arr[11] << 6;
231 p1 |= arr[10] << 2;
232 p1 |= arr[9] << 7;
233 p1 |= arr[8] << 1;
234
235 p1 |= arr[7] << 0;
236 p1 |= arr[6] << 8;
237 p1 |= arr[5] << 11;
238 p1 |= arr[4] << 3;
239
240 p1 |= arr[3] << 10;
241 p1 |= arr[2] << 4;
242 p1 |= arr[1] << 5;
243 p1 |= arr[0] << 9;
244 PrintAndLog("Pattern 1 : %d [0x%X]", p1, p1);
245
246 uint16_t sebury1 = id & 0xFFFF;
247 uint8_t sebury2 = (id >> 16) & 0x7F;
248 uint32_t sebury3 = id & 0x7FFFFF;
249 PrintAndLog("Pattern Sebury : %d %d %d [0x%X 0x%X 0x%X]", sebury1, sebury2, sebury3, sebury1, sebury2, sebury3);
250 }
251 }
252 return;
253 }
254
255 int AskEm410xDecode(bool verbose, uint32_t *hi, uint64_t *lo )
256 {
257 size_t idx = 0;
258 size_t BitLen = DemodBufferLen;
259 uint8_t BitStream[MAX_GRAPH_TRACE_LEN]={0};
260 memcpy(BitStream, DemodBuffer, BitLen);
261 if (Em410xDecode(BitStream, &BitLen, &idx, hi, lo)){
262 //set GraphBuffer for clone or sim command
263 setDemodBuf(BitStream, BitLen, idx);
264 if (g_debugMode){
265 PrintAndLog("DEBUG: idx: %d, Len: %d, Printing Demod Buffer:", idx, BitLen);
266 printDemodBuff();
267 }
268 if (verbose){
269 PrintAndLog("EM410x pattern found: ");
270 printEM410x(*hi, *lo);
271 }
272 return 1;
273 }
274 return 0;
275 }
276
277 int AskEm410xDemod(const char *Cmd, uint32_t *hi, uint64_t *lo, bool verbose)
278 {
279 bool st = TRUE;
280 if (!ASKDemod_ext(Cmd, FALSE, FALSE, 1, &st)) return 0;
281 return AskEm410xDecode(verbose, hi, lo);
282 }
283
284 //by marshmellow
285 //takes 3 arguments - clock, invert and maxErr as integers
286 //attempts to demodulate ask while decoding manchester
287 //prints binary found and saves in graphbuffer for further commands
288 int CmdAskEM410xDemod(const char *Cmd)
289 {
290 char cmdp = param_getchar(Cmd, 0);
291 if (strlen(Cmd) > 10 || cmdp == 'h' || cmdp == 'H') {
292 PrintAndLog("Usage: data askem410xdemod [clock] <0|1> [maxError]");
293 PrintAndLog(" [set clock as integer] optional, if not set, autodetect.");
294 PrintAndLog(" <invert>, 1 for invert output");
295 PrintAndLog(" [set maximum allowed errors], default = 100.");
296 PrintAndLog("");
297 PrintAndLog(" sample: data askem410xdemod = demod an EM410x Tag ID from GraphBuffer");
298 PrintAndLog(" : data askem410xdemod 32 = demod an EM410x Tag ID from GraphBuffer using a clock of RF/32");
299 PrintAndLog(" : data askem410xdemod 32 1 = demod an EM410x Tag ID from GraphBuffer using a clock of RF/32 and inverting data");
300 PrintAndLog(" : data askem410xdemod 1 = demod an EM410x Tag ID from GraphBuffer while inverting data");
301 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");
302 return 0;
303 }
304 uint64_t lo = 0;
305 uint32_t hi = 0;
306 return AskEm410xDemod(Cmd, &hi, &lo, true);
307 }
308
309 //by marshmellow
310 //Cmd Args: Clock, invert, maxErr, maxLen as integers and amplify as char == 'a'
311 // (amp may not be needed anymore)
312 //verbose will print results and demoding messages
313 //emSearch will auto search for EM410x format in bitstream
314 //askType switches decode: ask/raw = 0, ask/manchester = 1
315 int ASKDemod_ext(const char *Cmd, bool verbose, bool emSearch, uint8_t askType, bool *stCheck) {
316 int invert=0;
317 int clk=0;
318 int maxErr=100;
319 int maxLen=0;
320 uint8_t askAmp = 0;
321 char amp = param_getchar(Cmd, 0);
322 uint8_t BitStream[MAX_GRAPH_TRACE_LEN]={0};
323 sscanf(Cmd, "%i %i %i %i %c", &clk, &invert, &maxErr, &maxLen, &amp);
324 if (!maxLen) maxLen = BIGBUF_SIZE;
325 if (invert != 0 && invert != 1) {
326 PrintAndLog("Invalid argument: %s", Cmd);
327 return 0;
328 }
329 if (clk==1){
330 invert=1;
331 clk=0;
332 }
333 if (amp == 'a' || amp == 'A') askAmp=1;
334 size_t BitLen = getFromGraphBuf(BitStream);
335 if (g_debugMode) PrintAndLog("DEBUG: Bitlen from grphbuff: %d",BitLen);
336 if (BitLen<255) return 0;
337 if (maxLen<BitLen && maxLen != 0) BitLen = maxLen;
338 int foundclk = 0;
339 bool st = false;
340 if (*stCheck) st = DetectST(BitStream, &BitLen, &foundclk);
341 if (st) {
342 *stCheck = st;
343 clk = (clk == 0) ? foundclk : clk;
344 if (verbose || g_debugMode) PrintAndLog("\nFound Sequence Terminator");
345 }
346 int errCnt = askdemod(BitStream, &BitLen, &clk, &invert, maxErr, askAmp, askType);
347 if (errCnt<0 || BitLen<16){ //if fatal error (or -1)
348 if (g_debugMode) PrintAndLog("DEBUG: no data found %d, errors:%d, bitlen:%d, clock:%d",errCnt,invert,BitLen,clk);
349 return 0;
350 }
351 if (errCnt>maxErr){
352 if (g_debugMode) PrintAndLog("DEBUG: Too many errors found, errors:%d, bits:%d, clock:%d",errCnt, BitLen, clk);
353 return 0;
354 }
355 if (verbose || g_debugMode) PrintAndLog("\nUsing Clock:%d, Invert:%d, Bits Found:%d",clk,invert,BitLen);
356
357 //output
358 setDemodBuf(BitStream,BitLen,0);
359 if (verbose || g_debugMode){
360 if (errCnt>0) PrintAndLog("# Errors during Demoding (shown as 7 in bit stream): %d",errCnt);
361 if (askType) PrintAndLog("ASK/Manchester - Clock: %d - Decoded bitstream:",clk);
362 else PrintAndLog("ASK/Raw - Clock: %d - Decoded bitstream:",clk);
363 // Now output the bitstream to the scrollback by line of 16 bits
364 printDemodBuff();
365
366 }
367 uint64_t lo = 0;
368 uint32_t hi = 0;
369 if (emSearch){
370 AskEm410xDecode(true, &hi, &lo);
371 }
372 return 1;
373 }
374 int ASKDemod(const char *Cmd, bool verbose, bool emSearch, uint8_t askType) {
375 bool st = false;
376 return ASKDemod_ext(Cmd, verbose, emSearch, askType, &st);
377 }
378
379 //by marshmellow
380 //takes 5 arguments - clock, invert, maxErr, maxLen as integers and amplify as char == 'a'
381 //attempts to demodulate ask while decoding manchester
382 //prints binary found and saves in graphbuffer for further commands
383 int Cmdaskmandemod(const char *Cmd)
384 {
385 char cmdp = param_getchar(Cmd, 0);
386 if (strlen(Cmd) > 25 || cmdp == 'h' || cmdp == 'H') {
387 PrintAndLog("Usage: data rawdemod am <s> [clock] <invert> [maxError] [maxLen] [amplify]");
388 PrintAndLog(" ['s'] optional, check for Sequence Terminator");
389 PrintAndLog(" [set clock as integer] optional, if not set, autodetect");
390 PrintAndLog(" <invert>, 1 to invert output");
391 PrintAndLog(" [set maximum allowed errors], default = 100");
392 PrintAndLog(" [set maximum Samples to read], default = 32768 (512 bits at rf/64)");
393 PrintAndLog(" <amplify>, 'a' to attempt demod with ask amplification, default = no amp");
394 PrintAndLog("");
395 PrintAndLog(" sample: data rawdemod am = demod an ask/manchester tag from GraphBuffer");
396 PrintAndLog(" : data rawdemod am 32 = demod an ask/manchester tag from GraphBuffer using a clock of RF/32");
397 PrintAndLog(" : data rawdemod am 32 1 = demod an ask/manchester tag from GraphBuffer using a clock of RF/32 and inverting data");
398 PrintAndLog(" : data rawdemod am 1 = demod an ask/manchester tag from GraphBuffer while inverting data");
399 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");
400 return 0;
401 }
402 bool st = TRUE;
403 if (Cmd[0]=='s')
404 return ASKDemod_ext(Cmd++, TRUE, TRUE, 1, &st);
405 else if (Cmd[1] == 's')
406 return ASKDemod_ext(Cmd+=2, TRUE, TRUE, 1, &st);
407 else
408 return ASKDemod(Cmd, TRUE, TRUE, 1);
409 }
410
411 //by marshmellow
412 //manchester decode
413 //stricktly take 10 and 01 and convert to 0 and 1
414 int Cmdmandecoderaw(const char *Cmd)
415 {
416 int i =0;
417 int errCnt=0;
418 size_t size=0;
419 int invert=0;
420 int maxErr = 20;
421 char cmdp = param_getchar(Cmd, 0);
422 if (strlen(Cmd) > 5 || cmdp == 'h' || cmdp == 'H') {
423 PrintAndLog("Usage: data manrawdecode [invert] [maxErr]");
424 PrintAndLog(" Takes 10 and 01 and converts to 0 and 1 respectively");
425 PrintAndLog(" --must have binary sequence in demodbuffer (run data askrawdemod first)");
426 PrintAndLog(" [invert] invert output");
427 PrintAndLog(" [maxErr] set number of errors allowed (default = 20)");
428 PrintAndLog("");
429 PrintAndLog(" sample: data manrawdecode = decode manchester bitstream from the demodbuffer");
430 return 0;
431 }
432 if (DemodBufferLen==0) return 0;
433 uint8_t BitStream[MAX_GRAPH_TRACE_LEN]={0};
434 int high=0,low=0;
435 for (;i<DemodBufferLen;++i){
436 if (DemodBuffer[i]>high) high=DemodBuffer[i];
437 else if(DemodBuffer[i]<low) low=DemodBuffer[i];
438 BitStream[i]=DemodBuffer[i];
439 }
440 if (high>7 || low <0 ){
441 PrintAndLog("Error: please raw demod the wave first then manchester raw decode");
442 return 0;
443 }
444
445 sscanf(Cmd, "%i %i", &invert, &maxErr);
446 size=i;
447 errCnt=manrawdecode(BitStream, &size, invert);
448 if (errCnt>=maxErr){
449 PrintAndLog("Too many errors: %d",errCnt);
450 return 0;
451 }
452 PrintAndLog("Manchester Decoded - # errors:%d - data:",errCnt);
453 PrintAndLog("%s", sprint_bin_break(BitStream, size, 16));
454 if (errCnt==0){
455 uint64_t id = 0;
456 uint32_t hi = 0;
457 size_t idx=0;
458 if (Em410xDecode(BitStream, &size, &idx, &hi, &id)){
459 //need to adjust to set bitstream back to manchester encoded data
460 //setDemodBuf(BitStream, size, idx);
461
462 printEM410x(hi, id);
463 }
464 }
465 return 1;
466 }
467
468 //by marshmellow
469 //biphase decode
470 //take 01 or 10 = 0 and 11 or 00 = 1
471 //takes 2 arguments "offset" default = 0 if 1 it will shift the decode by one bit
472 // and "invert" default = 0 if 1 it will invert output
473 // the argument offset allows us to manually shift if the output is incorrect - [EDIT: now auto detects]
474 int CmdBiphaseDecodeRaw(const char *Cmd)
475 {
476 size_t size=0;
477 int offset=0, invert=0, maxErr=20, errCnt=0;
478 char cmdp = param_getchar(Cmd, 0);
479 if (strlen(Cmd) > 3 || cmdp == 'h' || cmdp == 'H') {
480 PrintAndLog("Usage: data biphaserawdecode [offset] [invert] [maxErr]");
481 PrintAndLog(" Converts 10 or 01 to 1 and 11 or 00 to 0");
482 PrintAndLog(" --must have binary sequence in demodbuffer (run data askrawdemod first)");
483 PrintAndLog(" --invert for Conditional Dephase Encoding (CDP) AKA Differential Manchester");
484 PrintAndLog("");
485 PrintAndLog(" [offset <0|1>], set to 0 not to adjust start position or to 1 to adjust decode start position");
486 PrintAndLog(" [invert <0|1>], set to 1 to invert output");
487 PrintAndLog(" [maxErr int], set max errors tolerated - default=20");
488 PrintAndLog("");
489 PrintAndLog(" sample: data biphaserawdecode = decode biphase bitstream from the demodbuffer");
490 PrintAndLog(" sample: data biphaserawdecode 1 1 = decode biphase bitstream from the demodbuffer, set offset, and invert output");
491 return 0;
492 }
493 sscanf(Cmd, "%i %i %i", &offset, &invert, &maxErr);
494 if (DemodBufferLen==0){
495 PrintAndLog("DemodBuffer Empty - run 'data rawdemod ar' first");
496 return 0;
497 }
498 uint8_t BitStream[MAX_GRAPH_TRACE_LEN]={0};
499 memcpy(BitStream, DemodBuffer, DemodBufferLen);
500 size = DemodBufferLen;
501 errCnt=BiphaseRawDecode(BitStream, &size, offset, invert);
502 if (errCnt<0){
503 PrintAndLog("Error during decode:%d", errCnt);
504 return 0;
505 }
506 if (errCnt>maxErr){
507 PrintAndLog("Too many errors attempting to decode: %d",errCnt);
508 return 0;
509 }
510
511 if (errCnt>0){
512 PrintAndLog("# Errors found during Demod (shown as 7 in bit stream): %d",errCnt);
513 }
514 PrintAndLog("Biphase Decoded using offset: %d - # invert:%d - data:",offset,invert);
515 PrintAndLog("%s", sprint_bin_break(BitStream, size, 16));
516
517 if (offset) setDemodBuf(DemodBuffer,DemodBufferLen-offset, offset); //remove first bit from raw demod
518 return 1;
519 }
520
521 //by marshmellow
522 // - ASK Demod then Biphase decode GraphBuffer samples
523 int ASKbiphaseDemod(const char *Cmd, bool verbose)
524 {
525 //ask raw demod GraphBuffer first
526 int offset=0, clk=0, invert=0, maxErr=0;
527 sscanf(Cmd, "%i %i %i %i", &offset, &clk, &invert, &maxErr);
528
529 uint8_t BitStream[MAX_DEMOD_BUF_LEN];
530 size_t size = getFromGraphBuf(BitStream);
531 if (size == 0 ) {
532 if (g_debugMode) PrintAndLog("DEBUG: no data in graphbuf");
533 return 0;
534 }
535 //invert here inverts the ask raw demoded bits which has no effect on the demod, but we need the pointer
536 int errCnt = askdemod(BitStream, &size, &clk, &invert, maxErr, 0, 0);
537 if ( errCnt < 0 || errCnt > maxErr ) {
538 if (g_debugMode) PrintAndLog("DEBUG: no data or error found %d, clock: %d", errCnt, clk);
539 return 0;
540 }
541
542 //attempt to Biphase decode BitStream
543 errCnt = BiphaseRawDecode(BitStream, &size, offset, invert);
544 if (errCnt < 0){
545 if (g_debugMode || verbose) PrintAndLog("Error BiphaseRawDecode: %d", errCnt);
546 return 0;
547 }
548 if (errCnt > maxErr) {
549 if (g_debugMode || verbose) PrintAndLog("Error BiphaseRawDecode too many errors: %d", errCnt);
550 return 0;
551 }
552 //success set DemodBuffer and return
553 setDemodBuf(BitStream, size, 0);
554 if (g_debugMode || verbose){
555 PrintAndLog("Biphase Decoded using offset: %d - clock: %d - # errors:%d - data:",offset,clk,errCnt);
556 printDemodBuff();
557 }
558 return 1;
559 }
560 //by marshmellow - see ASKbiphaseDemod
561 int Cmdaskbiphdemod(const char *Cmd)
562 {
563 char cmdp = param_getchar(Cmd, 0);
564 if (strlen(Cmd) > 25 || cmdp == 'h' || cmdp == 'H') {
565 PrintAndLog("Usage: data rawdemod ab [offset] [clock] <invert> [maxError] [maxLen] <amplify>");
566 PrintAndLog(" [offset], offset to begin biphase, default=0");
567 PrintAndLog(" [set clock as integer] optional, if not set, autodetect");
568 PrintAndLog(" <invert>, 1 to invert output");
569 PrintAndLog(" [set maximum allowed errors], default = 100");
570 PrintAndLog(" [set maximum Samples to read], default = 32768 (512 bits at rf/64)");
571 PrintAndLog(" <amplify>, 'a' to attempt demod with ask amplification, default = no amp");
572 PrintAndLog(" NOTE: <invert> can be entered as second or third argument");
573 PrintAndLog(" NOTE: <amplify> can be entered as first, second or last argument");
574 PrintAndLog(" NOTE: any other arg must have previous args set to work");
575 PrintAndLog("");
576 PrintAndLog(" NOTE: --invert for Conditional Dephase Encoding (CDP) AKA Differential Manchester");
577 PrintAndLog("");
578 PrintAndLog(" sample: data rawdemod ab = demod an ask/biph tag from GraphBuffer");
579 PrintAndLog(" : data rawdemod ab 0 a = demod an ask/biph tag from GraphBuffer, amplified");
580 PrintAndLog(" : data rawdemod ab 1 32 = demod an ask/biph tag from GraphBuffer using an offset of 1 and a clock of RF/32");
581 PrintAndLog(" : data rawdemod ab 0 32 1 = demod an ask/biph tag from GraphBuffer using a clock of RF/32 and inverting data");
582 PrintAndLog(" : data rawdemod ab 0 1 = demod an ask/biph tag from GraphBuffer while inverting data");
583 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");
584 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");
585 return 0;
586 }
587 return ASKbiphaseDemod(Cmd, TRUE);
588 }
589
590 //by marshmellow
591 //attempts to demodulate and identify a G_Prox_II verex/chubb card
592 //WARNING: if it fails during some points it will destroy the DemodBuffer data
593 // but will leave the GraphBuffer intact.
594 //if successful it will push askraw data back to demod buffer ready for emulation
595 int CmdG_Prox_II_Demod(const char *Cmd)
596 {
597 if (!ASKbiphaseDemod(Cmd, FALSE)){
598 if (g_debugMode) PrintAndLog("Error gProxII: ASKbiphaseDemod failed 1st try");
599 return 0;
600 }
601 size_t size = DemodBufferLen;
602 //call lfdemod.c demod for gProxII
603 int ans = gProxII_Demod(DemodBuffer, &size);
604 if (ans < 0){
605 if (g_debugMode) PrintAndLog("Error gProxII_Demod");
606 return 0;
607 }
608 //got a good demod of 96 bits
609 uint8_t ByteStream[8] = {0x00};
610 uint8_t xorKey=0;
611 size_t startIdx = ans + 6; //start after 6 bit preamble
612
613 uint8_t bits_no_spacer[90];
614 //so as to not mess with raw DemodBuffer copy to a new sample array
615 memcpy(bits_no_spacer, DemodBuffer + startIdx, 90);
616 // remove the 18 (90/5=18) parity bits (down to 72 bits (96-6-18=72))
617 size_t bitLen = removeParity(bits_no_spacer, 0, 5, 3, 90); //source, startloc, paritylen, ptype, length_to_run
618 if (bitLen != 72) {
619 if (g_debugMode) PrintAndLog("Error gProxII: spacer removal did not produce 72 bits: %u, start: %u", bitLen, startIdx);
620 return 0;
621 }
622 // get key and then get all 8 bytes of payload decoded
623 xorKey = (uint8_t)bytebits_to_byteLSBF(bits_no_spacer, 8);
624 for (size_t idx = 0; idx < 8; idx++) {
625 ByteStream[idx] = ((uint8_t)bytebits_to_byteLSBF(bits_no_spacer+8 + (idx*8),8)) ^ xorKey;
626 if (g_debugMode) PrintAndLog("byte %u after xor: %02x", (unsigned int)idx, ByteStream[idx]);
627 }
628 //now ByteStream contains 8 Bytes (64 bits) of decrypted raw tag data
629 //
630 uint8_t fmtLen = ByteStream[0]>>2;
631 uint32_t FC = 0;
632 uint32_t Card = 0;
633 //get raw 96 bits to print
634 uint32_t raw1 = bytebits_to_byte(DemodBuffer+ans,32);
635 uint32_t raw2 = bytebits_to_byte(DemodBuffer+ans+32, 32);
636 uint32_t raw3 = bytebits_to_byte(DemodBuffer+ans+64, 32);
637
638 if (fmtLen==36){
639 FC = ((ByteStream[3] & 0x7F)<<7) | (ByteStream[4]>>1);
640 Card = ((ByteStream[4]&1)<<19) | (ByteStream[5]<<11) | (ByteStream[6]<<3) | (ByteStream[7]>>5);
641 PrintAndLog("G-Prox-II Found: FmtLen %d, FC %u, Card %u", (int)fmtLen, FC, Card);
642 } else if(fmtLen==26){
643 FC = ((ByteStream[3] & 0x7F)<<1) | (ByteStream[4]>>7);
644 Card = ((ByteStream[4]&0x7F)<<9) | (ByteStream[5]<<1) | (ByteStream[6]>>7);
645 PrintAndLog("G-Prox-II Found: FmtLen %d, FC %u, Card %u", (int)fmtLen, FC, Card);
646 } else {
647 PrintAndLog("Unknown G-Prox-II Fmt Found: FmtLen %d",(int)fmtLen);
648 PrintAndLog("Decoded Raw: %s", sprint_hex(ByteStream, 8));
649 }
650 PrintAndLog("Raw: %08x%08x%08x", raw1,raw2,raw3);
651 setDemodBuf(DemodBuffer+ans, 96, 0);
652 return 1;
653 }
654
655 //by marshmellow
656 //see ASKDemod for what args are accepted
657 int CmdVikingDemod(const char *Cmd)
658 {
659 if (!ASKDemod(Cmd, false, false, 1)) {
660 if (g_debugMode) PrintAndLog("ASKDemod failed");
661 return 0;
662 }
663 size_t size = DemodBufferLen;
664 //call lfdemod.c demod for Viking
665 int ans = VikingDemod_AM(DemodBuffer, &size);
666 if (ans < 0) {
667 if (g_debugMode) PrintAndLog("Error Viking_Demod %d %s", ans, (ans == -5)?"[chksum error]":"");
668 return 0;
669 }
670 //got a good demod
671 uint32_t raw1 = bytebits_to_byte(DemodBuffer+ans, 32);
672 uint32_t raw2 = bytebits_to_byte(DemodBuffer+ans+32, 32);
673 uint32_t cardid = bytebits_to_byte(DemodBuffer+ans+24, 32);
674 uint8_t checksum = bytebits_to_byte(DemodBuffer+ans+32+24, 8);
675 PrintAndLog("Viking Tag Found: Card ID %08X, Checksum: %02X", cardid, checksum);
676 PrintAndLog("Raw: %08X%08X", raw1,raw2);
677 setDemodBuf(DemodBuffer+ans, 64, 0);
678 return 1;
679 }
680
681 //by marshmellow - see ASKDemod
682 int Cmdaskrawdemod(const char *Cmd)
683 {
684 char cmdp = param_getchar(Cmd, 0);
685 if (strlen(Cmd) > 25 || cmdp == 'h' || cmdp == 'H') {
686 PrintAndLog("Usage: data rawdemod ar [clock] <invert> [maxError] [maxLen] [amplify]");
687 PrintAndLog(" [set clock as integer] optional, if not set, autodetect");
688 PrintAndLog(" <invert>, 1 to invert output");
689 PrintAndLog(" [set maximum allowed errors], default = 100");
690 PrintAndLog(" [set maximum Samples to read], default = 32768 (1024 bits at rf/64)");
691 PrintAndLog(" <amplify>, 'a' to attempt demod with ask amplification, default = no amp");
692 PrintAndLog("");
693 PrintAndLog(" sample: data rawdemod ar = demod an ask tag from GraphBuffer");
694 PrintAndLog(" : data rawdemod ar a = demod an ask tag from GraphBuffer, amplified");
695 PrintAndLog(" : data rawdemod ar 32 = demod an ask tag from GraphBuffer using a clock of RF/32");
696 PrintAndLog(" : data rawdemod ar 32 1 = demod an ask tag from GraphBuffer using a clock of RF/32 and inverting data");
697 PrintAndLog(" : data rawdemod ar 1 = demod an ask tag from GraphBuffer while inverting data");
698 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");
699 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");
700 return 0;
701 }
702 return ASKDemod(Cmd, TRUE, FALSE, 0);
703 }
704
705 int AutoCorrelate(int window, bool SaveGrph, bool verbose)
706 {
707 static int CorrelBuffer[MAX_GRAPH_TRACE_LEN];
708 size_t Correlation = 0;
709 int maxSum = 0;
710 int lastMax = 0;
711 if (verbose) PrintAndLog("performing %d correlations", GraphTraceLen - window);
712 for (int i = 0; i < GraphTraceLen - window; ++i) {
713 int sum = 0;
714 for (int j = 0; j < window; ++j) {
715 sum += (GraphBuffer[j]*GraphBuffer[i + j]) / 256;
716 }
717 CorrelBuffer[i] = sum;
718 if (sum >= maxSum-100 && sum <= maxSum+100){
719 //another max
720 Correlation = i-lastMax;
721 lastMax = i;
722 if (sum > maxSum) maxSum = sum;
723 } else if (sum > maxSum){
724 maxSum=sum;
725 lastMax = i;
726 }
727 }
728 if (Correlation==0){
729 //try again with wider margin
730 for (int i = 0; i < GraphTraceLen - window; i++){
731 if (CorrelBuffer[i] >= maxSum-(maxSum*0.05) && CorrelBuffer[i] <= maxSum+(maxSum*0.05)){
732 //another max
733 Correlation = i-lastMax;
734 lastMax = i;
735 //if (CorrelBuffer[i] > maxSum) maxSum = sum;
736 }
737 }
738 }
739 if (verbose && Correlation > 0) PrintAndLog("Possible Correlation: %d samples",Correlation);
740
741 if (SaveGrph){
742 GraphTraceLen = GraphTraceLen - window;
743 memcpy(GraphBuffer, CorrelBuffer, GraphTraceLen * sizeof (int));
744 RepaintGraphWindow();
745 }
746 return Correlation;
747 }
748
749 int usage_data_autocorr(void)
750 {
751 //print help
752 PrintAndLog("Usage: data autocorr [window] [g]");
753 PrintAndLog("Options: ");
754 PrintAndLog(" h This help");
755 PrintAndLog(" [window] window length for correlation - default = 4000");
756 PrintAndLog(" g save back to GraphBuffer (overwrite)");
757 return 0;
758 }
759
760 int CmdAutoCorr(const char *Cmd)
761 {
762 char cmdp = param_getchar(Cmd, 0);
763 if (cmdp == 'h' || cmdp == 'H') return usage_data_autocorr();
764 int window = 4000; //set default
765 char grph=0;
766 bool updateGrph = FALSE;
767 sscanf(Cmd, "%i %c", &window, &grph);
768
769 if (window >= GraphTraceLen) {
770 PrintAndLog("window must be smaller than trace (%d samples)",
771 GraphTraceLen);
772 return 0;
773 }
774 if (grph == 'g') updateGrph=TRUE;
775 return AutoCorrelate(window, updateGrph, TRUE);
776 }
777
778 int CmdBitsamples(const char *Cmd)
779 {
780 int cnt = 0;
781 uint8_t got[12288];
782
783 GetFromBigBuf(got,sizeof(got),0);
784 WaitForResponse(CMD_ACK,NULL);
785
786 for (int j = 0; j < sizeof(got); j++) {
787 for (int k = 0; k < 8; k++) {
788 if(got[j] & (1 << (7 - k))) {
789 GraphBuffer[cnt++] = 1;
790 } else {
791 GraphBuffer[cnt++] = 0;
792 }
793 }
794 }
795 GraphTraceLen = cnt;
796 RepaintGraphWindow();
797 return 0;
798 }
799
800 int CmdBuffClear(const char *Cmd)
801 {
802 UsbCommand c = {CMD_BUFF_CLEAR};
803 SendCommand(&c);
804 ClearGraph(true);
805 return 0;
806 }
807
808 int CmdDec(const char *Cmd)
809 {
810 for (int i = 0; i < (GraphTraceLen / 2); ++i)
811 GraphBuffer[i] = GraphBuffer[i * 2];
812 GraphTraceLen /= 2;
813 PrintAndLog("decimated by 2");
814 RepaintGraphWindow();
815 return 0;
816 }
817 /**
818 * Undecimate - I'd call it 'interpolate', but we'll save that
819 * name until someone does an actual interpolation command, not just
820 * blindly repeating samples
821 * @param Cmd
822 * @return
823 */
824 int CmdUndec(const char *Cmd)
825 {
826 if(param_getchar(Cmd, 0) == 'h')
827 {
828 PrintAndLog("Usage: data undec [factor]");
829 PrintAndLog("This function performs un-decimation, by repeating each sample N times");
830 PrintAndLog("Options: ");
831 PrintAndLog(" h This help");
832 PrintAndLog(" factor The number of times to repeat each sample.[default:2]");
833 PrintAndLog("Example: 'data undec 3'");
834 return 0;
835 }
836
837 uint8_t factor = param_get8ex(Cmd, 0, 2, 10);
838 //We have memory, don't we?
839 int swap[MAX_GRAPH_TRACE_LEN] = { 0 };
840 uint32_t g_index = 0 ,s_index = 0;
841 while(g_index < GraphTraceLen && s_index + factor < MAX_GRAPH_TRACE_LEN)
842 {
843 int count = 0;
844 for (count = 0; count < factor && s_index + count < MAX_GRAPH_TRACE_LEN; count++)
845 swap[s_index+count] = GraphBuffer[g_index];
846 s_index += count;
847 g_index++;
848 }
849
850 memcpy(GraphBuffer, swap, s_index * sizeof(int));
851 GraphTraceLen = s_index;
852 RepaintGraphWindow();
853 return 0;
854 }
855
856 //by marshmellow
857 //shift graph zero up or down based on input + or -
858 int CmdGraphShiftZero(const char *Cmd)
859 {
860
861 int shift=0;
862 //set options from parameters entered with the command
863 sscanf(Cmd, "%i", &shift);
864 int shiftedVal=0;
865 for(int i = 0; i<GraphTraceLen; i++){
866 shiftedVal=GraphBuffer[i]+shift;
867 if (shiftedVal>127)
868 shiftedVal=127;
869 else if (shiftedVal<-127)
870 shiftedVal=-127;
871 GraphBuffer[i]= shiftedVal;
872 }
873 CmdNorm("");
874 return 0;
875 }
876
877 //by marshmellow
878 //use large jumps in read samples to identify edges of waves and then amplify that wave to max
879 //similar to dirtheshold, threshold commands
880 //takes a threshold length which is the measured length between two samples then determines an edge
881 int CmdAskEdgeDetect(const char *Cmd)
882 {
883 int thresLen = 25;
884 int last = 0;
885 sscanf(Cmd, "%i", &thresLen);
886
887 for(int i = 1; i < GraphTraceLen; ++i){
888 if (GraphBuffer[i] - GraphBuffer[i-1] >= thresLen) //large jump up
889 last = 127;
890 else if(GraphBuffer[i] - GraphBuffer[i-1] <= -1 * thresLen) //large jump down
891 last = -127;
892
893 GraphBuffer[i-1] = last;
894 }
895 RepaintGraphWindow();
896 return 0;
897 }
898
899 /* Print our clock rate */
900 // uses data from graphbuffer
901 // adjusted to take char parameter for type of modulation to find the clock - by marshmellow.
902 int CmdDetectClockRate(const char *Cmd)
903 {
904 char cmdp = param_getchar(Cmd, 0);
905 if (strlen(Cmd) > 6 || strlen(Cmd) == 0 || cmdp == 'h' || cmdp == 'H') {
906 PrintAndLog("Usage: data detectclock [modulation] <clock>");
907 PrintAndLog(" [modulation as char], specify the modulation type you want to detect the clock of");
908 PrintAndLog(" <clock> , specify the clock (optional - to get best start position only)");
909 PrintAndLog(" 'a' = ask, 'f' = fsk, 'n' = nrz/direct, 'p' = psk");
910 PrintAndLog("");
911 PrintAndLog(" sample: data detectclock a = detect the clock of an ask modulated wave in the GraphBuffer");
912 PrintAndLog(" data detectclock f = detect the clock of an fsk modulated wave in the GraphBuffer");
913 PrintAndLog(" data detectclock p = detect the clock of an psk modulated wave in the GraphBuffer");
914 PrintAndLog(" data detectclock n = detect the clock of an nrz/direct modulated wave in the GraphBuffer");
915 }
916 int ans=0;
917 if (cmdp == 'a'){
918 ans = GetAskClock(Cmd+1, true, false);
919 } else if (cmdp == 'f'){
920 ans = GetFskClock("", true, false);
921 } else if (cmdp == 'n'){
922 ans = GetNrzClock("", true, false);
923 } else if (cmdp == 'p'){
924 ans = GetPskClock("", true, false);
925 } else {
926 PrintAndLog ("Please specify a valid modulation to detect the clock of - see option h for help");
927 }
928 return ans;
929 }
930
931 char *GetFSKType(uint8_t fchigh, uint8_t fclow, uint8_t invert)
932 {
933 static char fType[8];
934 memset(fType, 0x00, 8);
935 char *fskType = fType;
936 if (fchigh==10 && fclow==8){
937 if (invert) //fsk2a
938 memcpy(fskType, "FSK2a", 5);
939 else //fsk2
940 memcpy(fskType, "FSK2", 4);
941 } else if (fchigh == 8 && fclow == 5) {
942 if (invert)
943 memcpy(fskType, "FSK1", 4);
944 else
945 memcpy(fskType, "FSK1a", 5);
946 } else {
947 memcpy(fskType, "FSK??", 5);
948 }
949 return fskType;
950 }
951
952 //by marshmellow
953 //fsk raw demod and print binary
954 //takes 4 arguments - Clock, invert, fchigh, fclow
955 //defaults: clock = 50, invert=1, fchigh=10, fclow=8 (RF/10 RF/8 (fsk2a))
956 int FSKrawDemod(const char *Cmd, bool verbose)
957 {
958 //raw fsk demod no manchester decoding no start bit finding just get binary from wave
959 uint8_t rfLen, invert, fchigh, fclow;
960
961 //set defaults
962 //set options from parameters entered with the command
963 rfLen = param_get8(Cmd, 0);
964 invert = param_get8(Cmd, 1);
965 fchigh = param_get8(Cmd, 2);
966 fclow = param_get8(Cmd, 3);
967 if (strlen(Cmd)>0 && strlen(Cmd)<=2) {
968 if (rfLen==1) {
969 invert = 1; //if invert option only is used
970 rfLen = 0;
971 }
972 }
973
974 uint8_t BitStream[MAX_GRAPH_TRACE_LEN]={0};
975 size_t BitLen = getFromGraphBuf(BitStream);
976 if (BitLen==0) return 0;
977 //get field clock lengths
978 uint16_t fcs=0;
979 if (!fchigh || !fclow) {
980 fcs = countFC(BitStream, BitLen, 1);
981 if (!fcs) {
982 fchigh = 10;
983 fclow = 8;
984 } else {
985 fchigh = (fcs >> 8) & 0x00FF;
986 fclow = fcs & 0x00FF;
987 }
988 }
989 //get bit clock length
990 if (!rfLen) {
991 rfLen = detectFSKClk(BitStream, BitLen, fchigh, fclow);
992 if (!rfLen) rfLen = 50;
993 }
994 int size = fskdemod(BitStream, BitLen, rfLen, invert, fchigh, fclow);
995 if (size > 0) {
996 setDemodBuf(BitStream, size, 0);
997
998 // Now output the bitstream to the scrollback by line of 16 bits
999 if (verbose || g_debugMode) {
1000 PrintAndLog("\nUsing Clock:%u, invert:%u, fchigh:%u, fclow:%u", (unsigned int)rfLen, (unsigned int)invert, (unsigned int)fchigh, (unsigned int)fclow);
1001 PrintAndLog("%s decoded bitstream:", GetFSKType(fchigh, fclow, invert));
1002 printDemodBuff();
1003 }
1004
1005 return 1;
1006 } else {
1007 if (g_debugMode) PrintAndLog("no FSK data found");
1008 }
1009 return 0;
1010 }
1011
1012 //by marshmellow
1013 //fsk raw demod and print binary
1014 //takes 4 arguments - Clock, invert, fchigh, fclow
1015 //defaults: clock = 50, invert=1, fchigh=10, fclow=8 (RF/10 RF/8 (fsk2a))
1016 int CmdFSKrawdemod(const char *Cmd)
1017 {
1018 char cmdp = param_getchar(Cmd, 0);
1019 if (strlen(Cmd) > 10 || cmdp == 'h' || cmdp == 'H') {
1020 PrintAndLog("Usage: data rawdemod fs [clock] <invert> [fchigh] [fclow]");
1021 PrintAndLog(" [set clock as integer] optional, omit for autodetect.");
1022 PrintAndLog(" <invert>, 1 for invert output, can be used even if the clock is omitted");
1023 PrintAndLog(" [fchigh], larger field clock length, omit for autodetect");
1024 PrintAndLog(" [fclow], small field clock length, omit for autodetect");
1025 PrintAndLog("");
1026 PrintAndLog(" sample: data rawdemod fs = demod an fsk tag from GraphBuffer using autodetect");
1027 PrintAndLog(" : data rawdemod fs 32 = demod an fsk tag from GraphBuffer using a clock of RF/32, autodetect fc");
1028 PrintAndLog(" : data rawdemod fs 1 = demod an fsk tag from GraphBuffer using autodetect, invert output");
1029 PrintAndLog(" : data rawdemod fs 32 1 = demod an fsk tag from GraphBuffer using a clock of RF/32, invert output, autodetect fc");
1030 PrintAndLog(" : data rawdemod fs 64 0 8 5 = demod an fsk1 RF/64 tag from GraphBuffer");
1031 PrintAndLog(" : data rawdemod fs 50 0 10 8 = demod an fsk2 RF/50 tag from GraphBuffer");
1032 PrintAndLog(" : data rawdemod fs 50 1 10 8 = demod an fsk2a RF/50 tag from GraphBuffer");
1033 return 0;
1034 }
1035 return FSKrawDemod(Cmd, TRUE);
1036 }
1037
1038 //by marshmellow (based on existing demod + holiman's refactor)
1039 //HID Prox demod - FSK RF/50 with preamble of 00011101 (then manchester encoded)
1040 //print full HID Prox ID and some bit format details if found
1041 int CmdFSKdemodHID(const char *Cmd)
1042 {
1043 //raw fsk demod no manchester decoding no start bit finding just get binary from wave
1044 uint32_t hi2=0, hi=0, lo=0;
1045
1046 uint8_t BitStream[MAX_GRAPH_TRACE_LEN]={0};
1047 size_t BitLen = getFromGraphBuf(BitStream);
1048 if (BitLen==0) return 0;
1049 //get binary from fsk wave
1050 int idx = HIDdemodFSK(BitStream,&BitLen,&hi2,&hi,&lo);
1051 if (idx<0){
1052 if (g_debugMode){
1053 if (idx==-1){
1054 PrintAndLog("DEBUG: Just Noise Detected");
1055 } else if (idx == -2) {
1056 PrintAndLog("DEBUG: Error demoding fsk");
1057 } else if (idx == -3) {
1058 PrintAndLog("DEBUG: Preamble not found");
1059 } else if (idx == -4) {
1060 PrintAndLog("DEBUG: Error in Manchester data, SIZE: %d", BitLen);
1061 } else {
1062 PrintAndLog("DEBUG: Error demoding fsk %d", idx);
1063 }
1064 }
1065 return 0;
1066 }
1067 if (hi2==0 && hi==0 && lo==0) {
1068 if (g_debugMode) PrintAndLog("DEBUG: Error - no values found");
1069 return 0;
1070 }
1071 if (hi2 != 0){ //extra large HID tags
1072 PrintAndLog("HID Prox TAG ID: %x%08x%08x (%d)",
1073 (unsigned int) hi2, (unsigned int) hi, (unsigned int) lo, (unsigned int) (lo>>1) & 0xFFFF);
1074 }
1075 else { //standard HID tags <38 bits
1076 uint8_t fmtLen = 0;
1077 uint32_t fc = 0;
1078 uint32_t cardnum = 0;
1079 if (((hi>>5)&1)==1){//if bit 38 is set then < 37 bit format is used
1080 uint32_t lo2=0;
1081 lo2=(((hi & 31) << 12) | (lo>>20)); //get bits 21-37 to check for format len bit
1082 uint8_t idx3 = 1;
1083 while(lo2>1){ //find last bit set to 1 (format len bit)
1084 lo2=lo2>>1;
1085 idx3++;
1086 }
1087 fmtLen =idx3+19;
1088 fc =0;
1089 cardnum=0;
1090 if(fmtLen==26){
1091 cardnum = (lo>>1)&0xFFFF;
1092 fc = (lo>>17)&0xFF;
1093 }
1094 if(fmtLen==34){
1095 cardnum = (lo>>1)&0xFFFF;
1096 fc= ((hi&1)<<15)|(lo>>17);
1097 }
1098 if(fmtLen==35){
1099 cardnum = (lo>>1)&0xFFFFF;
1100 fc = ((hi&1)<<11)|(lo>>21);
1101 }
1102 }
1103 else { //if bit 38 is not set then 37 bit format is used
1104 fmtLen = 37;
1105 fc = 0;
1106 cardnum = 0;
1107 if(fmtLen == 37){
1108 cardnum = (lo>>1)&0x7FFFF;
1109 fc = ((hi&0xF)<<12)|(lo>>20);
1110 }
1111 }
1112 PrintAndLog("HID Prox TAG ID: %x%08x (%d) - Format Len: %dbit - FC: %d - Card: %d",
1113 (unsigned int) hi, (unsigned int) lo, (unsigned int) (lo>>1) & 0xFFFF,
1114 (unsigned int) fmtLen, (unsigned int) fc, (unsigned int) cardnum);
1115 }
1116 setDemodBuf(BitStream,BitLen,idx);
1117 if (g_debugMode){
1118 PrintAndLog("DEBUG: idx: %d, Len: %d, Printing Demod Buffer:", idx, BitLen);
1119 printDemodBuff();
1120 }
1121 return 1;
1122 }
1123
1124 //by marshmellow
1125 //Paradox Prox demod - FSK RF/50 with preamble of 00001111 (then manchester encoded)
1126 //print full Paradox Prox ID and some bit format details if found
1127 int CmdFSKdemodParadox(const char *Cmd)
1128 {
1129 //raw fsk demod no manchester decoding no start bit finding just get binary from wave
1130 uint32_t hi2=0, hi=0, lo=0;
1131
1132 uint8_t BitStream[MAX_GRAPH_TRACE_LEN]={0};
1133 size_t BitLen = getFromGraphBuf(BitStream);
1134 if (BitLen==0) return 0;
1135 //get binary from fsk wave
1136 int idx = ParadoxdemodFSK(BitStream,&BitLen,&hi2,&hi,&lo);
1137 if (idx<0){
1138 if (g_debugMode){
1139 if (idx==-1){
1140 PrintAndLog("DEBUG: Just Noise Detected");
1141 } else if (idx == -2) {
1142 PrintAndLog("DEBUG: Error demoding fsk");
1143 } else if (idx == -3) {
1144 PrintAndLog("DEBUG: Preamble not found");
1145 } else if (idx == -4) {
1146 PrintAndLog("DEBUG: Error in Manchester data");
1147 } else {
1148 PrintAndLog("DEBUG: Error demoding fsk %d", idx);
1149 }
1150 }
1151 return 0;
1152 }
1153 if (hi2==0 && hi==0 && lo==0){
1154 if (g_debugMode) PrintAndLog("DEBUG: Error - no value found");
1155 return 0;
1156 }
1157 uint32_t fc = ((hi & 0x3)<<6) | (lo>>26);
1158 uint32_t cardnum = (lo>>10)&0xFFFF;
1159 uint32_t rawLo = bytebits_to_byte(BitStream+idx+64,32);
1160 uint32_t rawHi = bytebits_to_byte(BitStream+idx+32,32);
1161 uint32_t rawHi2 = bytebits_to_byte(BitStream+idx,32);
1162
1163 PrintAndLog("Paradox TAG ID: %x%08x - FC: %d - Card: %d - Checksum: %02x - RAW: %08x%08x%08x",
1164 hi>>10, (hi & 0x3)<<26 | (lo>>10), fc, cardnum, (lo>>2) & 0xFF, rawHi2, rawHi, rawLo);
1165 setDemodBuf(BitStream,BitLen,idx);
1166 if (g_debugMode){
1167 PrintAndLog("DEBUG: idx: %d, len: %d, Printing Demod Buffer:", idx, BitLen);
1168 printDemodBuff();
1169 }
1170 return 1;
1171 }
1172
1173 //by marshmellow
1174 //IO-Prox demod - FSK RF/64 with preamble of 000000001
1175 //print ioprox ID and some format details
1176 int CmdFSKdemodIO(const char *Cmd)
1177 {
1178 int idx=0;
1179 //something in graphbuffer?
1180 if (GraphTraceLen < 65) {
1181 if (g_debugMode)PrintAndLog("DEBUG: not enough samples in GraphBuffer");
1182 return 0;
1183 }
1184 uint8_t BitStream[MAX_GRAPH_TRACE_LEN]={0};
1185 size_t BitLen = getFromGraphBuf(BitStream);
1186 if (BitLen==0) return 0;
1187
1188 //get binary from fsk wave
1189 idx = IOdemodFSK(BitStream,BitLen);
1190 if (idx<0){
1191 if (g_debugMode){
1192 if (idx==-1){
1193 PrintAndLog("DEBUG: Just Noise Detected");
1194 } else if (idx == -2) {
1195 PrintAndLog("DEBUG: not enough samples");
1196 } else if (idx == -3) {
1197 PrintAndLog("DEBUG: error during fskdemod");
1198 } else if (idx == -4) {
1199 PrintAndLog("DEBUG: Preamble not found");
1200 } else if (idx == -5) {
1201 PrintAndLog("DEBUG: Separator bits not found");
1202 } else {
1203 PrintAndLog("DEBUG: Error demoding fsk %d", idx);
1204 }
1205 }
1206 return 0;
1207 }
1208 if (idx==0){
1209 if (g_debugMode){
1210 PrintAndLog("DEBUG: IO Prox Data not found - FSK Bits: %d",BitLen);
1211 if (BitLen > 92) PrintAndLog("%s", sprint_bin_break(BitStream,92,16));
1212 }
1213 return 0;
1214 }
1215 //Index map
1216 //0 10 20 30 40 50 60
1217 //| | | | | | |
1218 //01234567 8 90123456 7 89012345 6 78901234 5 67890123 4 56789012 3 45678901 23
1219 //-----------------------------------------------------------------------------
1220 //00000000 0 11110000 1 facility 1 version* 1 code*one 1 code*two 1 ???????? 11
1221 //
1222 //XSF(version)facility:codeone+codetwo (raw)
1223 //Handle the data
1224 if (idx+64>BitLen) {
1225 if (g_debugMode) PrintAndLog("not enough bits found - bitlen: %d",BitLen);
1226 return 0;
1227 }
1228 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]);
1229 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]);
1230 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]);
1231 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]);
1232 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]);
1233 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]);
1234 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]);
1235
1236 uint32_t code = bytebits_to_byte(BitStream+idx,32);
1237 uint32_t code2 = bytebits_to_byte(BitStream+idx+32,32);
1238 uint8_t version = bytebits_to_byte(BitStream+idx+27,8); //14,4
1239 uint8_t facilitycode = bytebits_to_byte(BitStream+idx+18,8) ;
1240 uint16_t number = (bytebits_to_byte(BitStream+idx+36,8)<<8)|(bytebits_to_byte(BitStream+idx+45,8)); //36,9
1241 uint8_t crc = bytebits_to_byte(BitStream+idx+54,8);
1242 uint16_t calccrc = 0;
1243
1244 for (uint8_t i=1; i<6; ++i){
1245 calccrc += bytebits_to_byte(BitStream+idx+9*i,8);
1246 }
1247 calccrc &= 0xff;
1248 calccrc = 0xff - calccrc;
1249
1250 char *crcStr = (crc == calccrc) ? "crc ok": "!crc";
1251
1252 PrintAndLog("IO Prox XSF(%02d)%02x:%05d (%08x%08x) [%02x %s]",version,facilitycode,number,code,code2, crc, crcStr);
1253 setDemodBuf(BitStream,64,idx);
1254 if (g_debugMode){
1255 PrintAndLog("DEBUG: idx: %d, Len: %d, Printing demod buffer:",idx,64);
1256 printDemodBuff();
1257 }
1258 return 1;
1259 }
1260
1261 //by marshmellow
1262 //AWID Prox demod - FSK RF/50 with preamble of 00000001 (always a 96 bit data stream)
1263 //print full AWID Prox ID and some bit format details if found
1264 int CmdFSKdemodAWID(const char *Cmd)
1265 {
1266 uint8_t BitStream[MAX_GRAPH_TRACE_LEN]={0};
1267 size_t size = getFromGraphBuf(BitStream);
1268 if (size==0) return 0;
1269
1270 //get binary from fsk wave
1271 int idx = AWIDdemodFSK(BitStream, &size);
1272 if (idx<=0){
1273 if (g_debugMode){
1274 if (idx == -1)
1275 PrintAndLog("DEBUG: Error - not enough samples");
1276 else if (idx == -2)
1277 PrintAndLog("DEBUG: Error - only noise found");
1278 else if (idx == -3)
1279 PrintAndLog("DEBUG: Error - problem during FSK demod");
1280 else if (idx == -4)
1281 PrintAndLog("DEBUG: Error - AWID preamble not found");
1282 else if (idx == -5)
1283 PrintAndLog("DEBUG: Error - Size not correct: %d", size);
1284 else
1285 PrintAndLog("DEBUG: Error %d",idx);
1286 }
1287 return 0;
1288 }
1289
1290 // Index map
1291 // 0 10 20 30 40 50 60
1292 // | | | | | | |
1293 // 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
1294 // -----------------------------------------------------------------------------
1295 // 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
1296 // 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
1297 // |---26 bit---| |-----117----||-------------142-------------|
1298 // b = format bit len, o = odd parity of last 3 bits
1299 // f = facility code, c = card number
1300 // w = wiegand parity
1301 // (26 bit format shown)
1302
1303 //get raw ID before removing parities
1304 uint32_t rawLo = bytebits_to_byte(BitStream+idx+64,32);
1305 uint32_t rawHi = bytebits_to_byte(BitStream+idx+32,32);
1306 uint32_t rawHi2 = bytebits_to_byte(BitStream+idx,32);
1307 setDemodBuf(BitStream,96,idx);
1308
1309 size = removeParity(BitStream, idx+8, 4, 1, 88);
1310 if (size != 66){
1311 if (g_debugMode) PrintAndLog("DEBUG: Error - at parity check-tag size does not match AWID format");
1312 return 0;
1313 }
1314 // ok valid card found!
1315
1316 // Index map
1317 // 0 10 20 30 40 50 60
1318 // | | | | | | |
1319 // 01234567 8 90123456 7890123456789012 3 456789012345678901234567890123456
1320 // -----------------------------------------------------------------------------
1321 // 00011010 1 01110101 0000000010001110 1 000000000000000000000000000000000
1322 // bbbbbbbb w ffffffff cccccccccccccccc w xxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxx
1323 // |26 bit| |-117--| |-----142------|
1324 //
1325 // 00110010 0 0000111110100000 00000000000100010010100010000111 1 000000000
1326 // bbbbbbbb w ffffffffffffffff cccccccccccccccccccccccccccccccc w xxxxxxxxx
1327 // |50 bit| |----4000------| |-----------2248975------------|
1328 // b = format bit len, o = odd parity of last 3 bits
1329 // f = facility code, c = card number
1330 // w = wiegand parity
1331
1332 uint32_t fc = 0;
1333 uint32_t cardnum = 0;
1334 uint32_t code1 = 0;
1335 uint32_t code2 = 0;
1336 uint8_t fmtLen = bytebits_to_byte(BitStream, 8);
1337 switch(fmtLen) {
1338 case 26:
1339 fc = bytebits_to_byte(BitStream + 9, 8);
1340 cardnum = bytebits_to_byte(BitStream + 17, 16);
1341 code1 = bytebits_to_byte(BitStream + 8,fmtLen);
1342 PrintAndLog("AWID Found - BitLength: %d, FC: %d, Card: %u - Wiegand: %x, Raw: %08x%08x%08x", fmtLen, fc, cardnum, code1, rawHi2, rawHi, rawLo);
1343 break;
1344 case 50:
1345 fc = bytebits_to_byte(BitStream + 9, 16);
1346 cardnum = bytebits_to_byte(BitStream + 25, 32);
1347 code1 = bytebits_to_byte(BitStream + 8, (fmtLen-32) );
1348 code2 = bytebits_to_byte(BitStream + 8 + (fmtLen-32), 32);
1349 PrintAndLog("AWID Found - BitLength: %d, FC: %d, Card: %u - Wiegand: %x%08x, Raw: %08x%08x%08x", fmtLen, fc, cardnum, code1, code2, rawHi2, rawHi, rawLo);
1350 break;
1351 default:
1352 if (fmtLen > 32 ) {
1353 cardnum = bytebits_to_byte(BitStream+8+(fmtLen-17), 16);
1354 code1 = bytebits_to_byte(BitStream+8,fmtLen-32);
1355 code2 = bytebits_to_byte(BitStream+8+(fmtLen-32),32);
1356 PrintAndLog("AWID Found - BitLength: %d -unknown BitLength- (%u) - Wiegand: %x%08x, Raw: %08x%08x%08x", fmtLen, cardnum, code1, code2, rawHi2, rawHi, rawLo);
1357 } else {
1358 cardnum = bytebits_to_byte(BitStream+8+(fmtLen-17), 16);
1359 code1 = bytebits_to_byte(BitStream+8,fmtLen);
1360 PrintAndLog("AWID Found - BitLength: %d -unknown BitLength- (%u) - Wiegand: %x, Raw: %08x%08x%08x", fmtLen, cardnum, code1, rawHi2, rawHi, rawLo);
1361 }
1362 break;
1363 }
1364
1365 if (g_debugMode){
1366 PrintAndLog("DEBUG: idx: %d, Len: %d Printing Demod Buffer:", idx, 96);
1367 printDemodBuff();
1368 }
1369 return 1;
1370 }
1371
1372 //by marshmellow
1373 //Pyramid Prox demod - FSK RF/50 with preamble of 0000000000000001 (always a 128 bit data stream)
1374 //print full Farpointe Data/Pyramid Prox ID and some bit format details if found
1375 int CmdFSKdemodPyramid(const char *Cmd)
1376 {
1377 //raw fsk demod no manchester decoding no start bit finding just get binary from wave
1378 uint8_t BitStream[MAX_GRAPH_TRACE_LEN]={0};
1379 size_t size = getFromGraphBuf(BitStream);
1380 if (size==0) return 0;
1381
1382 //get binary from fsk wave
1383 int idx = PyramiddemodFSK(BitStream, &size);
1384 if (idx < 0){
1385 if (g_debugMode){
1386 if (idx == -5)
1387 PrintAndLog("DEBUG: Error - not enough samples");
1388 else if (idx == -1)
1389 PrintAndLog("DEBUG: Error - only noise found");
1390 else if (idx == -2)
1391 PrintAndLog("DEBUG: Error - problem during FSK demod");
1392 else if (idx == -3)
1393 PrintAndLog("DEBUG: Error - Size not correct: %d", size);
1394 else if (idx == -4)
1395 PrintAndLog("DEBUG: Error - Pyramid preamble not found");
1396 else
1397 PrintAndLog("DEBUG: Error - idx: %d",idx);
1398 }
1399 return 0;
1400 }
1401 // Index map
1402 // 0 10 20 30 40 50 60
1403 // | | | | | | |
1404 // 0123456 7 8901234 5 6789012 3 4567890 1 2345678 9 0123456 7 8901234 5 6789012 3
1405 // -----------------------------------------------------------------------------
1406 // 0000000 0 0000000 1 0000000 1 0000000 1 0000000 1 0000000 1 0000000 1 0000000 1
1407 // premable xxxxxxx o xxxxxxx o xxxxxxx o xxxxxxx o xxxxxxx o xxxxxxx o xxxxxxx o
1408
1409 // 64 70 80 90 100 110 120
1410 // | | | | | | |
1411 // 4567890 1 2345678 9 0123456 7 8901234 5 6789012 3 4567890 1 2345678 9 0123456 7
1412 // -----------------------------------------------------------------------------
1413 // 0000000 1 0000000 1 0000000 1 0110111 0 0011000 1 0000001 0 0001100 1 1001010 0
1414 // xxxxxxx o xxxxxxx o xxxxxxx o xswffff o ffffccc o ccccccc o ccccccw o ppppppp o
1415 // |---115---||---------71---------|
1416 // s = format start bit, o = odd parity of last 7 bits
1417 // f = facility code, c = card number
1418 // w = wiegand parity, x = extra space for other formats
1419 // p = CRC8maxim checksum
1420 // (26 bit format shown)
1421
1422 //get bytes for checksum calc
1423 uint8_t checksum = bytebits_to_byte(BitStream + idx + 120, 8);
1424 uint8_t csBuff[14] = {0x00};
1425 for (uint8_t i = 0; i < 13; i++){
1426 csBuff[i] = bytebits_to_byte(BitStream + idx + 16 + (i*8), 8);
1427 }
1428 //check checksum calc
1429 //checksum calc thanks to ICEMAN!!
1430 uint32_t checkCS = CRC8Maxim(csBuff,13);
1431
1432 //get raw ID before removing parities
1433 uint32_t rawLo = bytebits_to_byte(BitStream+idx+96,32);
1434 uint32_t rawHi = bytebits_to_byte(BitStream+idx+64,32);
1435 uint32_t rawHi2 = bytebits_to_byte(BitStream+idx+32,32);
1436 uint32_t rawHi3 = bytebits_to_byte(BitStream+idx,32);
1437 setDemodBuf(BitStream,128,idx);
1438
1439 size = removeParity(BitStream, idx+8, 8, 1, 120);
1440 if (size != 105){
1441 if (g_debugMode)
1442 PrintAndLog("DEBUG: Error at parity check - tag size does not match Pyramid format, SIZE: %d, IDX: %d, hi3: %x",size, idx, rawHi3);
1443 return 0;
1444 }
1445
1446 // ok valid card found!
1447
1448 // Index map
1449 // 0 10 20 30 40 50 60 70
1450 // | | | | | | | |
1451 // 01234567890123456789012345678901234567890123456789012345678901234567890
1452 // -----------------------------------------------------------------------
1453 // 00000000000000000000000000000000000000000000000000000000000000000000000
1454 // xxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxx
1455
1456 // 71 80 90 100
1457 // | | | |
1458 // 1 2 34567890 1234567890123456 7 8901234
1459 // ---------------------------------------
1460 // 1 1 01110011 0000000001000110 0 1001010
1461 // s w ffffffff cccccccccccccccc w ppppppp
1462 // |--115-| |------71------|
1463 // s = format start bit, o = odd parity of last 7 bits
1464 // f = facility code, c = card number
1465 // w = wiegand parity, x = extra space for other formats
1466 // p = CRC8-Maxim checksum
1467 // (26 bit format shown)
1468
1469 //find start bit to get fmtLen
1470 int j;
1471 for (j=0; j < size; ++j){
1472 if(BitStream[j]) break;
1473 }
1474
1475 uint8_t fmtLen = size-j-8;
1476 uint32_t fc = 0;
1477 uint32_t cardnum = 0;
1478 uint32_t code1 = 0;
1479
1480 if ( fmtLen == 26 ){
1481 fc = bytebits_to_byte(BitStream+73, 8);
1482 cardnum = bytebits_to_byte(BitStream+81, 16);
1483 code1 = bytebits_to_byte(BitStream+72,fmtLen);
1484 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);
1485 } else if (fmtLen == 45) {
1486 fmtLen = 42; //end = 10 bits not 7 like 26 bit fmt
1487 fc = bytebits_to_byte(BitStream+53, 10);
1488 cardnum = bytebits_to_byte(BitStream+63, 32);
1489 PrintAndLog("Pyramid ID Found - BitLength: %d, FC: %d, Card: %d - Raw: %08x%08x%08x%08x", fmtLen, fc, cardnum, rawHi3, rawHi2, rawHi, rawLo);
1490 } else {
1491 cardnum = bytebits_to_byte(BitStream+81, 16);
1492 PrintAndLog("Pyramid ID Found - BitLength: %d -unknown BitLength- (%d), Raw: %08x%08x%08x%08x", fmtLen, cardnum, rawHi3, rawHi2, rawHi, rawLo);
1493 }
1494 if (checksum == checkCS)
1495 PrintAndLog("Checksum %02x passed", checksum);
1496 else
1497 PrintAndLog("Checksum %02x failed - should have been %02x", checksum, checkCS);
1498
1499 if (g_debugMode){
1500 PrintAndLog("DEBUG: idx: %d, Len: %d, Printing Demod Buffer:", idx, 128);
1501 printDemodBuff();
1502 }
1503 return 1;
1504 }
1505
1506 // FDX-B ISO11784/85 demod (aka animal tag) BIPHASE, inverted, rf/32, with preamble of 00000000001 (128bits)
1507 // 8 databits + 1 parity (1)
1508 // CIITT 16 chksum
1509 // NATIONAL CODE, ICAR database
1510 // COUNTRY CODE (ISO3166) or http://cms.abvma.ca/uploads/ManufacturersISOsandCountryCodes.pdf
1511 // FLAG (animal/non-animal)
1512 /*
1513 38 IDbits
1514 10 country code
1515 1 extra app bit
1516 14 reserved bits
1517 1 animal bit
1518 16 ccitt CRC chksum over 64bit ID CODE.
1519 24 appli bits.
1520
1521 -- sample: 985121004515220 [ 37FF65B88EF94 ]
1522 */
1523 int CmdFDXBdemodBI(const char *Cmd){
1524
1525 int invert = 1;
1526 int clk = 32;
1527 int errCnt = 0;
1528 int maxErr = 0;
1529 uint8_t BitStream[MAX_DEMOD_BUF_LEN];
1530 size_t size = getFromGraphBuf(BitStream);
1531
1532 errCnt = askdemod(BitStream, &size, &clk, &invert, maxErr, 0, 0);
1533 if ( errCnt < 0 || errCnt > maxErr ) {
1534 if (g_debugMode) PrintAndLog("DEBUG: no data or error found %d, clock: %d", errCnt, clk);
1535 return 0;
1536 }
1537
1538 errCnt = BiphaseRawDecode(BitStream, &size, maxErr, 1);
1539 if (errCnt < 0 || errCnt > maxErr ) {
1540 if (g_debugMode) PrintAndLog("Error BiphaseRawDecode: %d", errCnt);
1541 return 0;
1542 }
1543
1544 int preambleIndex = FDXBdemodBI(BitStream, &size);
1545 if (preambleIndex < 0){
1546 if (g_debugMode) PrintAndLog("Error FDXBDemod , no startmarker found :: %d",preambleIndex);
1547 return 0;
1548 }
1549 if (size != 128) {
1550 if (g_debugMode) PrintAndLog("Error incorrect data length found");
1551 return 0;
1552 }
1553
1554 setDemodBuf(BitStream, 128, preambleIndex);
1555
1556 // remove marker bits (1's every 9th digit after preamble) (pType = 2)
1557 size = removeParity(BitStream, preambleIndex + 11, 9, 2, 117);
1558 if ( size != 104 ) {
1559 if (g_debugMode) PrintAndLog("Error removeParity:: %d", size);
1560 return 0;
1561 }
1562 if (g_debugMode) {
1563 char *bin = sprint_bin_break(BitStream,size,16);
1564 PrintAndLog("DEBUG BinStream:\n%s",bin);
1565 }
1566 PrintAndLog("\nFDX-B / ISO 11784/5 Animal Tag ID Found:");
1567 if (g_debugMode) PrintAndLog("Start marker %d; Size %d", preambleIndex, size);
1568
1569 //got a good demod
1570 uint64_t NationalCode = ((uint64_t)(bytebits_to_byteLSBF(BitStream+32,6)) << 32) | bytebits_to_byteLSBF(BitStream,32);
1571 uint32_t countryCode = bytebits_to_byteLSBF(BitStream+38,10);
1572 uint8_t dataBlockBit = BitStream[48];
1573 uint32_t reservedCode = bytebits_to_byteLSBF(BitStream+49,14);
1574 uint8_t animalBit = BitStream[63];
1575 uint32_t crc16 = bytebits_to_byteLSBF(BitStream+64,16);
1576 uint32_t extended = bytebits_to_byteLSBF(BitStream+80,24);
1577
1578 uint64_t rawid = ((uint64_t)bytebits_to_byte(BitStream,32)<<32) | bytebits_to_byte(BitStream+32,32);
1579 uint8_t raw[8];
1580 num_to_bytes(rawid, 8, raw);
1581
1582 if (g_debugMode) PrintAndLog("Raw ID Hex: %s", sprint_hex(raw,8));
1583
1584 uint16_t calcCrc = crc16_ccitt_kermit(raw, 8);
1585 PrintAndLog("Animal ID: %04u-%012llu", countryCode, NationalCode);
1586 PrintAndLog("National Code: %012llu", NationalCode);
1587 PrintAndLog("CountryCode: %04u", countryCode);
1588 PrintAndLog("Extended Data: %s", dataBlockBit ? "True" : "False");
1589 PrintAndLog("reserved Code: %u", reservedCode);
1590 PrintAndLog("Animal Tag: %s", animalBit ? "True" : "False");
1591 PrintAndLog("CRC: 0x%04X - [%04X] - %s", crc16, calcCrc, (calcCrc == crc16) ? "Passed" : "Failed");
1592 PrintAndLog("Extended: 0x%X\n", extended);
1593
1594 return 1;
1595 }
1596
1597
1598 //by marshmellow
1599 //attempt to psk1 demod graph buffer
1600 int PSKDemod(const char *Cmd, bool verbose)
1601 {
1602 int invert=0;
1603 int clk=0;
1604 int maxErr=100;
1605 sscanf(Cmd, "%i %i %i", &clk, &invert, &maxErr);
1606 if (clk==1){
1607 invert=1;
1608 clk=0;
1609 }
1610 if (invert != 0 && invert != 1) {
1611 if (g_debugMode || verbose) PrintAndLog("Invalid argument: %s", Cmd);
1612 return 0;
1613 }
1614 uint8_t BitStream[MAX_GRAPH_TRACE_LEN]={0};
1615 size_t BitLen = getFromGraphBuf(BitStream);
1616 if (BitLen==0) return 0;
1617 uint8_t carrier=countFC(BitStream, BitLen, 0);
1618 if (carrier!=2 && carrier!=4 && carrier!=8){
1619 //invalid carrier
1620 return 0;
1621 }
1622 if (g_debugMode){
1623 PrintAndLog("Carrier: rf/%d",carrier);
1624 }
1625 int errCnt=0;
1626 errCnt = pskRawDemod(BitStream, &BitLen, &clk, &invert);
1627 if (errCnt > maxErr){
1628 if (g_debugMode || verbose) PrintAndLog("Too many errors found, clk: %d, invert: %d, numbits: %d, errCnt: %d",clk,invert,BitLen,errCnt);
1629 return 0;
1630 }
1631 if (errCnt<0|| BitLen<16){ //throw away static - allow 1 and -1 (in case of threshold command first)
1632 if (g_debugMode || verbose) PrintAndLog("no data found, clk: %d, invert: %d, numbits: %d, errCnt: %d",clk,invert,BitLen,errCnt);
1633 return 0;
1634 }
1635 if (verbose || g_debugMode){
1636 PrintAndLog("\nUsing Clock:%d, invert:%d, Bits Found:%d",clk,invert,BitLen);
1637 if (errCnt>0){
1638 PrintAndLog("# Errors during Demoding (shown as 7 in bit stream): %d",errCnt);
1639 }
1640 }
1641 //prime demod buffer for output
1642 setDemodBuf(BitStream,BitLen,0);
1643 return 1;
1644 }
1645
1646 // Indala 26 bit decode
1647 // by marshmellow
1648 // optional arguments - same as CmdpskNRZrawDemod (clock & invert)
1649 int CmdIndalaDecode(const char *Cmd)
1650 {
1651 int ans;
1652 if (strlen(Cmd)>0){
1653 ans = PSKDemod(Cmd, 0);
1654 } else{ //default to RF/32
1655 ans = PSKDemod("32", 0);
1656 }
1657
1658 if (!ans){
1659 if (g_debugMode)
1660 PrintAndLog("Error1: %d",ans);
1661 return 0;
1662 }
1663 uint8_t invert=0;
1664 size_t size = DemodBufferLen;
1665 int startIdx = indala26decode(DemodBuffer, &size, &invert);
1666 if (startIdx < 0 || size > 224) {
1667 if (g_debugMode)
1668 PrintAndLog("Error2: %d",ans);
1669 return -1;
1670 }
1671 setDemodBuf(DemodBuffer, size, (size_t)startIdx);
1672 if (invert)
1673 if (g_debugMode)
1674 PrintAndLog("Had to invert bits");
1675
1676 PrintAndLog("BitLen: %d",DemodBufferLen);
1677 //convert UID to HEX
1678 uint32_t uid1, uid2, uid3, uid4, uid5, uid6, uid7;
1679 uid1=bytebits_to_byte(DemodBuffer,32);
1680 uid2=bytebits_to_byte(DemodBuffer+32,32);
1681 if (DemodBufferLen==64){
1682 PrintAndLog("Indala UID=%s (%x%08x)", sprint_bin_break(DemodBuffer,DemodBufferLen,16), uid1, uid2);
1683 } else {
1684 uid3=bytebits_to_byte(DemodBuffer+64,32);
1685 uid4=bytebits_to_byte(DemodBuffer+96,32);
1686 uid5=bytebits_to_byte(DemodBuffer+128,32);
1687 uid6=bytebits_to_byte(DemodBuffer+160,32);
1688 uid7=bytebits_to_byte(DemodBuffer+192,32);
1689 PrintAndLog("Indala UID=%s (%x%08x%08x%08x%08x%08x%08x)",
1690 sprint_bin_break(DemodBuffer,DemodBufferLen,16), uid1, uid2, uid3, uid4, uid5, uid6, uid7);
1691 }
1692 if (g_debugMode){
1693 PrintAndLog("DEBUG: printing demodbuffer:");
1694 printDemodBuff();
1695 }
1696 return 1;
1697 }
1698
1699 int CmdPSKNexWatch(const char *Cmd)
1700 {
1701 if (!PSKDemod("", false)) return 0;
1702 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};
1703 size_t startIdx = 0, size = DemodBufferLen;
1704 bool invert = false;
1705 if (!preambleSearch(DemodBuffer, preamble, sizeof(preamble), &size, &startIdx)){
1706 // if didn't find preamble try again inverting
1707 if (!PSKDemod("1", false)) return 0;
1708 size = DemodBufferLen;
1709 if (!preambleSearch(DemodBuffer, preamble, sizeof(preamble), &size, &startIdx)) return 0;
1710 invert = true;
1711 }
1712 if (size != 128) return 0;
1713 setDemodBuf(DemodBuffer, size, startIdx+4);
1714 startIdx = 8+32; //4 = extra i added, 8 = preamble, 32 = reserved bits (always 0)
1715 //get ID
1716 uint32_t ID = 0;
1717 for (uint8_t wordIdx=0; wordIdx<4; wordIdx++){
1718 for (uint8_t idx=0; idx<8; idx++){
1719 ID = (ID << 1) | DemodBuffer[startIdx+wordIdx+(idx*4)];
1720 }
1721 }
1722 //parity check (TBD)
1723
1724 //checksum check (TBD)
1725
1726 //output
1727 PrintAndLog("NexWatch ID: %d", ID);
1728 if (invert){
1729 PrintAndLog("Had to Invert - probably NexKey");
1730 for (uint8_t idx=0; idx<size; idx++)
1731 DemodBuffer[idx] ^= 1;
1732 }
1733
1734 CmdPrintDemodBuff("x");
1735 return 1;
1736 }
1737
1738 // by marshmellow
1739 // takes 3 arguments - clock, invert, maxErr as integers
1740 // attempts to demodulate nrz only
1741 // prints binary found and saves in demodbuffer for further commands
1742 int NRZrawDemod(const char *Cmd, bool verbose)
1743 {
1744 int invert=0;
1745 int clk=0;
1746 int maxErr=100;
1747 sscanf(Cmd, "%i %i %i", &clk, &invert, &maxErr);
1748 if (clk==1){
1749 invert=1;
1750 clk=0;
1751 }
1752 if (invert != 0 && invert != 1) {
1753 PrintAndLog("Invalid argument: %s", Cmd);
1754 return 0;
1755 }
1756 uint8_t BitStream[MAX_GRAPH_TRACE_LEN]={0};
1757 size_t BitLen = getFromGraphBuf(BitStream);
1758 if (BitLen==0) return 0;
1759 int errCnt=0;
1760 errCnt = nrzRawDemod(BitStream, &BitLen, &clk, &invert);
1761 if (errCnt > maxErr){
1762 if (g_debugMode) PrintAndLog("Too many errors found, clk: %d, invert: %d, numbits: %d, errCnt: %d",clk,invert,BitLen,errCnt);
1763 return 0;
1764 }
1765 if (errCnt<0 || BitLen<16){ //throw away static - allow 1 and -1 (in case of threshold command first)
1766 if (g_debugMode) PrintAndLog("no data found, clk: %d, invert: %d, numbits: %d, errCnt: %d",clk,invert,BitLen,errCnt);
1767 return 0;
1768 }
1769 if (verbose || g_debugMode) PrintAndLog("Tried NRZ Demod using Clock: %d - invert: %d - Bits Found: %d",clk,invert,BitLen);
1770 //prime demod buffer for output
1771 setDemodBuf(BitStream,BitLen,0);
1772
1773 if (errCnt>0 && (verbose || g_debugMode)) PrintAndLog("# Errors during Demoding (shown as 7 in bit stream): %d",errCnt);
1774 if (verbose || g_debugMode) {
1775 PrintAndLog("NRZ demoded bitstream:");
1776 // Now output the bitstream to the scrollback by line of 16 bits
1777 printDemodBuff();
1778 }
1779 return 1;
1780 }
1781
1782 int CmdNRZrawDemod(const char *Cmd)
1783 {
1784 char cmdp = param_getchar(Cmd, 0);
1785 if (strlen(Cmd) > 10 || cmdp == 'h' || cmdp == 'H') {
1786 PrintAndLog("Usage: data rawdemod nr [clock] <0|1> [maxError]");
1787 PrintAndLog(" [set clock as integer] optional, if not set, autodetect.");
1788 PrintAndLog(" <invert>, 1 for invert output");
1789 PrintAndLog(" [set maximum allowed errors], default = 100.");
1790 PrintAndLog("");
1791 PrintAndLog(" sample: data rawdemod nr = demod a nrz/direct tag from GraphBuffer");
1792 PrintAndLog(" : data rawdemod nr 32 = demod a nrz/direct tag from GraphBuffer using a clock of RF/32");
1793 PrintAndLog(" : data rawdemod nr 32 1 = demod a nrz/direct tag from GraphBuffer using a clock of RF/32 and inverting data");
1794 PrintAndLog(" : data rawdemod nr 1 = demod a nrz/direct tag from GraphBuffer while inverting data");
1795 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");
1796 return 0;
1797 }
1798 return NRZrawDemod(Cmd, TRUE);
1799 }
1800
1801 // by marshmellow
1802 // takes 3 arguments - clock, invert, maxErr as integers
1803 // attempts to demodulate psk only
1804 // prints binary found and saves in demodbuffer for further commands
1805 int CmdPSK1rawDemod(const char *Cmd)
1806 {
1807 int ans;
1808 char cmdp = param_getchar(Cmd, 0);
1809 if (strlen(Cmd) > 10 || cmdp == 'h' || cmdp == 'H') {
1810 PrintAndLog("Usage: data rawdemod p1 [clock] <0|1> [maxError]");
1811 PrintAndLog(" [set clock as integer] optional, if not set, autodetect.");
1812 PrintAndLog(" <invert>, 1 for invert output");
1813 PrintAndLog(" [set maximum allowed errors], default = 100.");
1814 PrintAndLog("");
1815 PrintAndLog(" sample: data rawdemod p1 = demod a psk1 tag from GraphBuffer");
1816 PrintAndLog(" : data rawdemod p1 32 = demod a psk1 tag from GraphBuffer using a clock of RF/32");
1817 PrintAndLog(" : data rawdemod p1 32 1 = demod a psk1 tag from GraphBuffer using a clock of RF/32 and inverting data");
1818 PrintAndLog(" : data rawdemod p1 1 = demod a psk1 tag from GraphBuffer while inverting data");
1819 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");
1820 return 0;
1821 }
1822 ans = PSKDemod(Cmd, TRUE);
1823 //output
1824 if (!ans){
1825 if (g_debugMode) PrintAndLog("Error demoding: %d",ans);
1826 return 0;
1827 }
1828
1829 PrintAndLog("PSK1 demoded bitstream:");
1830 // Now output the bitstream to the scrollback by line of 16 bits
1831 printDemodBuff();
1832 return 1;
1833 }
1834
1835 // by marshmellow
1836 // takes same args as cmdpsk1rawdemod
1837 int CmdPSK2rawDemod(const char *Cmd)
1838 {
1839 int ans=0;
1840 char cmdp = param_getchar(Cmd, 0);
1841 if (strlen(Cmd) > 10 || cmdp == 'h' || cmdp == 'H') {
1842 PrintAndLog("Usage: data rawdemod p2 [clock] <0|1> [maxError]");
1843 PrintAndLog(" [set clock as integer] optional, if not set, autodetect.");
1844 PrintAndLog(" <invert>, 1 for invert output");
1845 PrintAndLog(" [set maximum allowed errors], default = 100.");
1846 PrintAndLog("");
1847 PrintAndLog(" sample: data rawdemod p2 = demod a psk2 tag from GraphBuffer, autodetect clock");
1848 PrintAndLog(" : data rawdemod p2 32 = demod a psk2 tag from GraphBuffer using a clock of RF/32");
1849 PrintAndLog(" : data rawdemod p2 32 1 = demod a psk2 tag from GraphBuffer using a clock of RF/32 and inverting output");
1850 PrintAndLog(" : data rawdemod p2 1 = demod a psk2 tag from GraphBuffer, autodetect clock and invert output");
1851 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");
1852 return 0;
1853 }
1854 ans=PSKDemod(Cmd, TRUE);
1855 if (!ans){
1856 if (g_debugMode) PrintAndLog("Error demoding: %d",ans);
1857 return 0;
1858 }
1859 psk1TOpsk2(DemodBuffer, DemodBufferLen);
1860 PrintAndLog("PSK2 demoded bitstream:");
1861 // Now output the bitstream to the scrollback by line of 16 bits
1862 printDemodBuff();
1863 return 1;
1864 }
1865
1866 // by marshmellow - combines all raw demod functions into one menu command
1867 int CmdRawDemod(const char *Cmd)
1868 {
1869 char cmdp = Cmd[0]; //param_getchar(Cmd, 0);
1870
1871 if (strlen(Cmd) > 20 || cmdp == 'h' || cmdp == 'H' || strlen(Cmd)<2) {
1872 PrintAndLog("Usage: data rawdemod [modulation] <help>|<options>");
1873 PrintAndLog(" [modulation] as 2 char, 'ab' for ask/biphase, 'am' for ask/manchester, 'ar' for ask/raw, 'fs' for fsk, ...");
1874 PrintAndLog(" 'nr' for nrz/direct, 'p1' for psk1, 'p2' for psk2");
1875 PrintAndLog(" <help> as 'h', prints the help for the specific modulation");
1876 PrintAndLog(" <options> see specific modulation help for optional parameters");
1877 PrintAndLog("");
1878 PrintAndLog(" sample: data rawdemod fs h = print help specific to fsk demod");
1879 PrintAndLog(" : data rawdemod fs = demod GraphBuffer using: fsk - autodetect");
1880 PrintAndLog(" : data rawdemod ab = demod GraphBuffer using: ask/biphase - autodetect");
1881 PrintAndLog(" : data rawdemod am = demod GraphBuffer using: ask/manchester - autodetect");
1882 PrintAndLog(" : data rawdemod ar = demod GraphBuffer using: ask/raw - autodetect");
1883 PrintAndLog(" : data rawdemod nr = demod GraphBuffer using: nrz/direct - autodetect");
1884 PrintAndLog(" : data rawdemod p1 = demod GraphBuffer using: psk1 - autodetect");
1885 PrintAndLog(" : data rawdemod p2 = demod GraphBuffer using: psk2 - autodetect");
1886 return 0;
1887 }
1888 char cmdp2 = Cmd[1];
1889 int ans = 0;
1890 if (cmdp == 'f' && cmdp2 == 's'){
1891 ans = CmdFSKrawdemod(Cmd+2);
1892 } else if(cmdp == 'a' && cmdp2 == 'b'){
1893 ans = Cmdaskbiphdemod(Cmd+2);
1894 } else if(cmdp == 'a' && cmdp2 == 'm'){
1895 ans = Cmdaskmandemod(Cmd+2);
1896 } else if(cmdp == 'a' && cmdp2 == 'r'){
1897 ans = Cmdaskrawdemod(Cmd+2);
1898 } else if(cmdp == 'n' && cmdp2 == 'r'){
1899 ans = CmdNRZrawDemod(Cmd+2);
1900 } else if(cmdp == 'p' && cmdp2 == '1'){
1901 ans = CmdPSK1rawDemod(Cmd+2);
1902 } else if(cmdp == 'p' && cmdp2 == '2'){
1903 ans = CmdPSK2rawDemod(Cmd+2);
1904 } else {
1905 PrintAndLog("unknown modulation entered - see help ('h') for parameter structure");
1906 }
1907 return ans;
1908 }
1909
1910 int CmdGrid(const char *Cmd)
1911 {
1912 sscanf(Cmd, "%i %i", &PlotGridX, &PlotGridY);
1913 PlotGridXdefault= PlotGridX;
1914 PlotGridYdefault= PlotGridY;
1915 RepaintGraphWindow();
1916 return 0;
1917 }
1918
1919 int CmdHexsamples(const char *Cmd)
1920 {
1921 int i, j;
1922 int requested = 0;
1923 int offset = 0;
1924 char string_buf[25];
1925 char* string_ptr = string_buf;
1926 uint8_t got[BIGBUF_SIZE];
1927
1928 sscanf(Cmd, "%i %i", &requested, &offset);
1929
1930 /* if no args send something */
1931 if (requested == 0) {
1932 requested = 8;
1933 }
1934 if (offset + requested > sizeof(got)) {
1935 PrintAndLog("Tried to read past end of buffer, <bytes> + <offset> > %d", BIGBUF_SIZE);
1936 return 0;
1937 }
1938
1939 GetFromBigBuf(got,requested,offset);
1940 WaitForResponse(CMD_ACK,NULL);
1941
1942 i = 0;
1943 for (j = 0; j < requested; j++) {
1944 i++;
1945 string_ptr += sprintf(string_ptr, "%02x ", got[j]);
1946 if (i == 8) {
1947 *(string_ptr - 1) = '\0'; // remove the trailing space
1948 PrintAndLog("%s", string_buf);
1949 string_buf[0] = '\0';
1950 string_ptr = string_buf;
1951 i = 0;
1952 }
1953 if (j == requested - 1 && string_buf[0] != '\0') { // print any remaining bytes
1954 *(string_ptr - 1) = '\0';
1955 PrintAndLog("%s", string_buf);
1956 string_buf[0] = '\0';
1957 }
1958 }
1959 return 0;
1960 }
1961
1962 int CmdHide(const char *Cmd)
1963 {
1964 HideGraphWindow();
1965 return 0;
1966 }
1967
1968 //zero mean GraphBuffer
1969 int CmdHpf(const char *Cmd)
1970 {
1971 int i;
1972 int accum = 0;
1973
1974 for (i = 10; i < GraphTraceLen; ++i)
1975 accum += GraphBuffer[i];
1976 accum /= (GraphTraceLen - 10);
1977 for (i = 0; i < GraphTraceLen; ++i)
1978 GraphBuffer[i] -= accum;
1979
1980 RepaintGraphWindow();
1981 return 0;
1982 }
1983
1984 bool _headBit( BitstreamOut *stream)
1985 {
1986 int bytepos = stream->position >> 3; // divide by 8
1987 int bitpos = (stream->position++) & 7; // mask out 00000111
1988 return (*(stream->buffer + bytepos) >> (7-bitpos)) & 1;
1989 }
1990
1991 uint8_t getByte(uint8_t bits_per_sample, BitstreamOut* b)
1992 {
1993 int i;
1994 uint8_t val = 0;
1995 for(i =0 ; i < bits_per_sample; i++)
1996 {
1997 val |= (_headBit(b) << (7-i));
1998 }
1999 return val;
2000 }
2001
2002 int getSamples(const char *Cmd, bool silent)
2003 {
2004 //If we get all but the last byte in bigbuf,
2005 // we don't have to worry about remaining trash
2006 // in the last byte in case the bits-per-sample
2007 // does not line up on byte boundaries
2008
2009 uint8_t got[BIGBUF_SIZE-1] = { 0 };
2010
2011 int n = strtol(Cmd, NULL, 0);
2012
2013 if ( n == 0 || n > sizeof(got))
2014 n = sizeof(got);
2015
2016 PrintAndLog("Reading %d bytes from device memory\n", n);
2017 GetFromBigBuf(got,n,0);
2018 PrintAndLog("Data fetched");
2019 UsbCommand response;
2020 if ( !WaitForResponseTimeout(CMD_ACK, &response, 10000) ) {
2021 PrintAndLog("timeout while waiting for reply.");
2022 return 1;
2023 }
2024
2025 uint8_t bits_per_sample = 8;
2026
2027 //Old devices without this feature would send 0 at arg[0]
2028 if(response.arg[0] > 0)
2029 {
2030 sample_config *sc = (sample_config *) response.d.asBytes;
2031 PrintAndLog("Samples @ %d bits/smpl, decimation 1:%d ", sc->bits_per_sample, sc->decimation);
2032 bits_per_sample = sc->bits_per_sample;
2033 }
2034 if(bits_per_sample < 8)
2035 {
2036 PrintAndLog("Unpacking...");
2037 BitstreamOut bout = { got, bits_per_sample * n, 0};
2038 int j =0;
2039 for (j = 0; j * bits_per_sample < n * 8 && j < n; j++) {
2040 uint8_t sample = getByte(bits_per_sample, &bout);
2041 GraphBuffer[j] = ((int) sample )- 128;
2042 }
2043 GraphTraceLen = j;
2044 PrintAndLog("Unpacked %d samples" , j );
2045 }else
2046 {
2047 for (int j = 0; j < n; j++) {
2048 GraphBuffer[j] = ((int)got[j]) - 128;
2049 }
2050 GraphTraceLen = n;
2051 }
2052
2053 RepaintGraphWindow();
2054 return 0;
2055 }
2056
2057 int CmdSamples(const char *Cmd)
2058 {
2059 return getSamples(Cmd, false);
2060 }
2061
2062 int CmdTuneSamples(const char *Cmd)
2063 {
2064 int timeout = 0;
2065 printf("\nMeasuring antenna characteristics, please wait...");
2066
2067 UsbCommand c = {CMD_MEASURE_ANTENNA_TUNING, {0,0,0}};
2068 clearCommandBuffer();
2069 SendCommand(&c);
2070 UsbCommand resp;
2071 while(!WaitForResponseTimeout(CMD_MEASURED_ANTENNA_TUNING, &resp, 2000)) {
2072 timeout++;
2073 printf(".");
2074 if (timeout > 7) {
2075 PrintAndLog("\nNo response from Proxmark. Aborting...");
2076 return 1;
2077 }
2078 }
2079
2080 int peakv, peakf;
2081 int vLf125, vLf134, vHf;
2082 vLf125 = resp.arg[0] & 0xffff;
2083 vLf134 = resp.arg[0] >> 16;
2084 vHf = resp.arg[1] & 0xffff;;
2085 peakf = resp.arg[2] & 0xffff;
2086 peakv = resp.arg[2] >> 16;
2087 PrintAndLog("");
2088 PrintAndLog("# LF antenna: %5.2f V @ 125.00 kHz", vLf125/1000.0);
2089 PrintAndLog("# LF antenna: %5.2f V @ 134.00 kHz", vLf134/1000.0);
2090 PrintAndLog("# LF optimal: %5.2f V @%9.2f kHz", peakv/1000.0, 12000.0/(peakf+1));
2091 PrintAndLog("# HF antenna: %5.2f V @ 13.56 MHz", vHf/1000.0);
2092
2093 #define LF_UNUSABLE_V 2948 // was 2000. Changed due to bugfix in voltage measurements. LF results are now 47% higher.
2094 #define LF_MARGINAL_V 14739 // was 10000. Changed due to bugfix bug in voltage measurements. LF results are now 47% higher.
2095 #define HF_UNUSABLE_V 3167 // was 2000. Changed due to bugfix in voltage measurements. HF results are now 58% higher.
2096 #define HF_MARGINAL_V 7917 // was 5000. Changed due to bugfix in voltage measurements. HF results are now 58% higher.
2097
2098 if (peakv < LF_UNUSABLE_V)
2099 PrintAndLog("# Your LF antenna is unusable.");
2100 else if (peakv < LF_MARGINAL_V)
2101 PrintAndLog("# Your LF antenna is marginal.");
2102 if (vHf < HF_UNUSABLE_V)
2103 PrintAndLog("# Your HF antenna is unusable.");
2104 else if (vHf < HF_MARGINAL_V)
2105 PrintAndLog("# Your HF antenna is marginal.");
2106
2107 if (peakv >= LF_UNUSABLE_V) {
2108 for (int i = 0; i < 256; i++) {
2109 GraphBuffer[i] = resp.d.asBytes[i] - 128;
2110 }
2111 PrintAndLog("Displaying LF tuning graph. Divisor 89 is 134khz, 95 is 125khz.\n");
2112 PrintAndLog("\n");
2113 GraphTraceLen = 256;
2114 ShowGraphWindow();
2115 RepaintGraphWindow();
2116 }
2117 return 0;
2118 }
2119
2120
2121 int CmdLoad(const char *Cmd)
2122 {
2123 char filename[FILE_PATH_SIZE] = {0x00};
2124 int len = 0;
2125
2126 len = strlen(Cmd);
2127 if (len > FILE_PATH_SIZE) len = FILE_PATH_SIZE;
2128 memcpy(filename, Cmd, len);
2129
2130 FILE *f = fopen(filename, "r");
2131 if (!f) {
2132 PrintAndLog("couldn't open '%s'", filename);
2133 return 0;
2134 }
2135
2136 GraphTraceLen = 0;
2137 char line[80];
2138 while (fgets(line, sizeof (line), f)) {
2139 GraphBuffer[GraphTraceLen] = atoi(line);
2140 GraphTraceLen++;
2141 }
2142 fclose(f);
2143 PrintAndLog("loaded %d samples", GraphTraceLen);
2144 RepaintGraphWindow();
2145 return 0;
2146 }
2147
2148 int CmdLtrim(const char *Cmd)
2149 {
2150 int ds = atoi(Cmd);
2151
2152 if (GraphTraceLen <= 0) return 0;
2153
2154 for (int i = ds; i < GraphTraceLen; ++i)
2155 GraphBuffer[i-ds] = GraphBuffer[i];
2156
2157 GraphTraceLen -= ds;
2158 RepaintGraphWindow();
2159 return 0;
2160 }
2161
2162 // trim graph to input argument length
2163 int CmdRtrim(const char *Cmd)
2164 {
2165 int ds = atoi(Cmd);
2166 GraphTraceLen = ds;
2167 RepaintGraphWindow();
2168 return 0;
2169 }
2170
2171 int CmdNorm(const char *Cmd)
2172 {
2173 int i;
2174 int max = INT_MIN, min = INT_MAX;
2175
2176 for (i = 10; i < GraphTraceLen; ++i) {
2177 if (GraphBuffer[i] > max)
2178 max = GraphBuffer[i];
2179 if (GraphBuffer[i] < min)
2180 min = GraphBuffer[i];
2181 }
2182
2183 if (max != min) {
2184 for (i = 0; i < GraphTraceLen; ++i) {
2185 GraphBuffer[i] = (GraphBuffer[i] - ((max + min) / 2)) * 256 /
2186 (max - min);
2187 //marshmelow: adjusted *1000 to *256 to make +/- 128 so demod commands still work
2188 }
2189 }
2190 RepaintGraphWindow();
2191 return 0;
2192 }
2193
2194 int CmdPlot(const char *Cmd)
2195 {
2196 ShowGraphWindow();
2197 return 0;
2198 }
2199
2200 int CmdSave(const char *Cmd)
2201 {
2202 char filename[FILE_PATH_SIZE] = {0x00};
2203 int len = 0;
2204
2205 len = strlen(Cmd);
2206 if (len > FILE_PATH_SIZE) len = FILE_PATH_SIZE;
2207 memcpy(filename, Cmd, len);
2208
2209
2210 FILE *f = fopen(filename, "w");
2211 if(!f) {
2212 PrintAndLog("couldn't open '%s'", filename);
2213 return 0;
2214 }
2215 int i;
2216 for (i = 0; i < GraphTraceLen; i++) {
2217 fprintf(f, "%d\n", GraphBuffer[i]);
2218 }
2219 fclose(f);
2220 PrintAndLog("saved to '%s'", Cmd);
2221 return 0;
2222 }
2223
2224 int CmdScale(const char *Cmd)
2225 {
2226 CursorScaleFactor = atoi(Cmd);
2227 if (CursorScaleFactor == 0) {
2228 PrintAndLog("bad, can't have zero scale");
2229 CursorScaleFactor = 1;
2230 }
2231 RepaintGraphWindow();
2232 return 0;
2233 }
2234
2235 int CmdDirectionalThreshold(const char *Cmd)
2236 {
2237 int8_t upThres = param_get8(Cmd, 0);
2238 int8_t downThres = param_get8(Cmd, 1);
2239
2240 printf("Applying Up Threshold: %d, Down Threshold: %d\n", upThres, downThres);
2241
2242 int lastValue = GraphBuffer[0];
2243 GraphBuffer[0] = 0; // Will be changed at the end, but init 0 as we adjust to last samples value if no threshold kicks in.
2244
2245 for (int i = 1; i < GraphTraceLen; ++i) {
2246 // Apply first threshold to samples heading up
2247 if (GraphBuffer[i] >= upThres && GraphBuffer[i] > lastValue)
2248 {
2249 lastValue = GraphBuffer[i]; // Buffer last value as we overwrite it.
2250 GraphBuffer[i] = 1;
2251 }
2252 // Apply second threshold to samples heading down
2253 else if (GraphBuffer[i] <= downThres && GraphBuffer[i] < lastValue)
2254 {
2255 lastValue = GraphBuffer[i]; // Buffer last value as we overwrite it.
2256 GraphBuffer[i] = -1;
2257 }
2258 else
2259 {
2260 lastValue = GraphBuffer[i]; // Buffer last value as we overwrite it.
2261 GraphBuffer[i] = GraphBuffer[i-1];
2262
2263 }
2264 }
2265 GraphBuffer[0] = GraphBuffer[1]; // Aline with first edited sample.
2266 RepaintGraphWindow();
2267 return 0;
2268 }
2269
2270 int CmdZerocrossings(const char *Cmd)
2271 {
2272 // Zero-crossings aren't meaningful unless the signal is zero-mean.
2273 CmdHpf("");
2274
2275 int sign = 1;
2276 int zc = 0;
2277 int lastZc = 0;
2278
2279 for (int i = 0; i < GraphTraceLen; ++i) {
2280 if (GraphBuffer[i] * sign >= 0) {
2281 // No change in sign, reproduce the previous sample count.
2282 zc++;
2283 GraphBuffer[i] = lastZc;
2284 } else {
2285 // Change in sign, reset the sample count.
2286 sign = -sign;
2287 GraphBuffer[i] = lastZc;
2288 if (sign > 0) {
2289 lastZc = zc;
2290 zc = 0;
2291 }
2292 }
2293 }
2294
2295 RepaintGraphWindow();
2296 return 0;
2297 }
2298
2299 int usage_data_bin2hex(){
2300 PrintAndLog("Usage: data bin2hex <binary_digits>");
2301 PrintAndLog(" This function will ignore all characters not 1 or 0 (but stop reading on whitespace)");
2302 return 0;
2303 }
2304
2305 /**
2306 * @brief Utility for conversion via cmdline.
2307 * @param Cmd
2308 * @return
2309 */
2310 int Cmdbin2hex(const char *Cmd)
2311 {
2312 int bg =0, en =0;
2313 if(param_getptr(Cmd, &bg, &en, 0))
2314 {
2315 return usage_data_bin2hex();
2316 }
2317 //Number of digits supplied as argument
2318 size_t length = en - bg +1;
2319 size_t bytelen = (length+7) / 8;
2320 uint8_t* arr = (uint8_t *) malloc(bytelen);
2321 memset(arr, 0, bytelen);
2322 BitstreamOut bout = { arr, 0, 0 };
2323
2324 for(; bg <= en ;bg++)
2325 {
2326 char c = Cmd[bg];
2327 if( c == '1') pushBit(&bout, 1);
2328 else if( c == '0') pushBit(&bout, 0);
2329 else PrintAndLog("Ignoring '%c'", c);
2330 }
2331
2332 if(bout.numbits % 8 != 0)
2333 {
2334 printf("[padded with %d zeroes]\n", 8-(bout.numbits % 8));
2335 }
2336
2337 //Uses printf instead of PrintAndLog since the latter
2338 // adds linebreaks to each printout - this way was more convenient since we don't have to
2339 // allocate a string and write to that first...
2340 for(size_t x = 0; x < bytelen ; x++)
2341 {
2342 printf("%02X", arr[x]);
2343 }
2344 printf("\n");
2345 free(arr);
2346 return 0;
2347 }
2348
2349 int usage_data_hex2bin(){
2350 PrintAndLog("Usage: data hex2bin <hex_digits>");
2351 PrintAndLog(" This function will ignore all non-hexadecimal characters (but stop reading on whitespace)");
2352 return 0;
2353 }
2354
2355 int Cmdhex2bin(const char *Cmd)
2356 {
2357 int bg =0, en =0;
2358 if(param_getptr(Cmd, &bg, &en, 0)) return usage_data_hex2bin();
2359
2360 while(bg <= en )
2361 {
2362 char x = Cmd[bg++];
2363 // capitalize
2364 if (x >= 'a' && x <= 'f')
2365 x -= 32;
2366 // convert to numeric value
2367 if (x >= '0' && x <= '9')
2368 x -= '0';
2369 else if (x >= 'A' && x <= 'F')
2370 x -= 'A' - 10;
2371 else
2372 continue;
2373
2374 //Uses printf instead of PrintAndLog since the latter
2375 // adds linebreaks to each printout - this way was more convenient since we don't have to
2376 // allocate a string and write to that first...
2377
2378 for(int i= 0 ; i < 4 ; ++i)
2379 printf("%d",(x >> (3 - i)) & 1);
2380 }
2381 printf("\n");
2382
2383 return 0;
2384 }
2385
2386 int CmdDataIIR(const char *Cmd){
2387 iceIIR_Butterworth(GraphBuffer, GraphTraceLen);
2388 RepaintGraphWindow();
2389 return 0;
2390 }
2391
2392 static command_t CommandTable[] =
2393 {
2394 {"help", CmdHelp, 1, "This help"},
2395 {"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)"},
2396 {"askem410xdemod", CmdAskEM410xDemod, 1, "[clock] [invert<0|1>] [maxErr] -- Demodulate an EM410x tag from GraphBuffer (args optional)"},
2397 {"askgproxiidemod", CmdG_Prox_II_Demod, 1, "Demodulate a G Prox II tag from GraphBuffer"},
2398 {"askvikingdemod", CmdVikingDemod, 1, "Demodulate a Viking AM tag from GraphBuffer"},
2399 {"autocorr", CmdAutoCorr, 1, "[window length] [g] -- Autocorrelation over window - g to save back to GraphBuffer (overwrite)"},
2400 {"biphaserawdecode",CmdBiphaseDecodeRaw,1, "[offset] [invert<0|1>] [maxErr] -- Biphase decode bin stream in DemodBuffer (offset = 0|1 bits to shift the decode start)"},
2401 {"bin2hex", Cmdbin2hex, 1, "bin2hex <digits> -- Converts binary to hexadecimal"},
2402 {"bitsamples", CmdBitsamples, 0, "Get raw samples as bitstring"},
2403 {"buffclear", CmdBuffClear, 1, "Clear sample buffer and graph window"},
2404 {"dec", CmdDec, 1, "Decimate samples"},
2405 {"detectclock", CmdDetectClockRate, 1, "[modulation] Detect clock rate of wave in GraphBuffer (options: 'a','f','n','p' for ask, fsk, nrz, psk respectively)"},
2406 {"fdxbdemod", CmdFDXBdemodBI , 1, "Demodulate a FDX-B ISO11784/85 Biphase tag from GraphBuffer"},
2407 {"fskawiddemod", CmdFSKdemodAWID, 1, "Demodulate an AWID FSK tag from GraphBuffer"},
2408 //{"fskfcdetect", CmdFSKfcDetect, 1, "Try to detect the Field Clock of an FSK wave"},
2409 {"fskhiddemod", CmdFSKdemodHID, 1, "Demodulate a HID FSK tag from GraphBuffer"},
2410 {"fskiodemod", CmdFSKdemodIO, 1, "Demodulate an IO Prox FSK tag from GraphBuffer"},
2411 {"fskpyramiddemod", CmdFSKdemodPyramid, 1, "Demodulate a Pyramid FSK tag from GraphBuffer"},
2412 {"fskparadoxdemod", CmdFSKdemodParadox, 1, "Demodulate a Paradox FSK tag from GraphBuffer"},
2413 {"getbitstream", CmdGetBitStream, 1, "Convert GraphBuffer's >=1 values to 1 and <1 to 0"},
2414 {"grid", CmdGrid, 1, "<x> <y> -- overlay grid on graph window, use zero value to turn off either"},
2415 {"hexsamples", CmdHexsamples, 0, "<bytes> [<offset>] -- Dump big buffer as hex bytes"},
2416 {"hex2bin", Cmdhex2bin, 1, "hex2bin <hexadecimal> -- Converts hexadecimal to binary"},
2417 {"hide", CmdHide, 1, "Hide graph window"},
2418 {"hpf", CmdHpf, 1, "Remove DC offset from trace"},
2419 {"load", CmdLoad, 1, "<filename> -- Load trace (to graph window"},
2420 {"ltrim", CmdLtrim, 1, "<samples> -- Trim samples from left of trace"},
2421 {"rtrim", CmdRtrim, 1, "<location to end trace> -- Trim samples from right of trace"},
2422 {"manrawdecode", Cmdmandecoderaw, 1, "[invert] [maxErr] -- Manchester decode binary stream in DemodBuffer"},
2423 {"norm", CmdNorm, 1, "Normalize max/min to +/-128"},
2424 {"plot", CmdPlot, 1, "Show graph window (hit 'h' in window for keystroke help)"},
2425 {"printdemodbuffer",CmdPrintDemodBuff, 1, "[x] [o] <offset> [l] <length> -- print the data in the DemodBuffer - 'x' for hex output"},
2426 {"pskindalademod", CmdIndalaDecode, 1, "[clock] [invert<0|1>] -- Demodulate an indala tag (PSK1) from GraphBuffer (args optional)"},
2427 {"psknexwatchdemod",CmdPSKNexWatch, 1, "Demodulate a NexWatch tag (nexkey, quadrakey) (PSK1) from GraphBuffer"},
2428 {"rawdemod", CmdRawDemod, 1, "[modulation] ... <options> -see help (h option) -- Demodulate the data in the GraphBuffer and output binary"},
2429 {"samples", CmdSamples, 0, "[512 - 40000] -- Get raw samples for graph window (GraphBuffer)"},
2430 {"save", CmdSave, 1, "<filename> -- Save trace (from graph window)"},
2431 {"scale", CmdScale, 1, "<int> -- Set cursor display scale"},
2432 {"setdebugmode", CmdSetDebugMode, 1, "<0|1|2> -- Turn on or off Debugging Level for lf demods"},
2433 {"shiftgraphzero", CmdGraphShiftZero, 1, "<shift> -- Shift 0 for Graphed wave + or - shift value"},
2434 {"dirthreshold", CmdDirectionalThreshold, 1, "<thres up> <thres down> -- Max rising higher up-thres/ Min falling lower down-thres, keep rest as prev."},
2435 {"tune", CmdTuneSamples, 0, "Get hw tune samples for graph window"},
2436 {"undec", CmdUndec, 1, "Un-decimate samples by 2"},
2437 {"zerocrossings", CmdZerocrossings, 1, "Count time between zero-crossings"},
2438 {"iir", CmdDataIIR, 0, "apply IIR buttersworth filter on plotdata"},
2439 {NULL, NULL, 0, NULL}
2440 };
2441
2442 int CmdData(const char *Cmd){
2443 clearCommandBuffer();
2444 CmdsParse(CommandTable, Cmd);
2445 return 0;
2446 }
2447
2448 int CmdHelp(const char *Cmd)
2449 {
2450 CmdsHelp(CommandTable);
2451 return 0;
2452 }
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