]> git.zerfleddert.de Git - proxmark3-svn/blame - client/cmddata.c
projects / proxmark3-svn / blame
? search:
summary | shortlog | log | commit | commitdiff | tree
blob | blame (incremental) | history | HEAD
ADD: @marshmellow42 's 14b reader changes.
[proxmark3-svn] / client / cmddata.c
CommitLineData
a553f267 1//-----------------------------------------------------------------------------
2// Copyright (C) 2010 iZsh <izsh at fail0verflow.com>
3//
4// This code is licensed to you under the terms of the GNU GPL, version 2 or,
5// at your option, any later version. See the LICENSE.txt file for the text of
6// the license.
7//-----------------------------------------------------------------------------
8// Data and Graph commands
9//-----------------------------------------------------------------------------
10
7fe9b0b7 11#include <stdio.h>
12#include <stdlib.h>
13#include <string.h>
14#include <limits.h>
902cb3c0 15#include "proxmark3.h"
7fe9b0b7 16#include "data.h"
17#include "ui.h"
18#include "graph.h"
19#include "cmdparser.h"
d51b2eda 20#include "util.h"
7fe9b0b7 21#include "cmdmain.h"
22#include "cmddata.h"
7db5f1ca 23#include "lfdemod.h"
31abe49f 24#include "usb_cmd.h"
73d04bb4 25#include "crc.h"
ad6219fc 26#include "crc16.h"
27
4118b74d 28uint8_t DemodBuffer[MAX_DEMOD_BUF_LEN];
ec75f5c1 29uint8_t g_debugMode;
2b3af97d 30size_t DemodBufferLen;
7fe9b0b7 31static int CmdHelp(const char *Cmd);
32
4118b74d 33//set the demod buffer with given array of binary (one bit per byte)
34//by marshmellow
ec75f5c1 35void setDemodBuf(uint8_t *buff, size_t size, size_t startIdx)
4118b74d 36{
13d77ef9 37 if (buff == NULL)
38 return;
39
40 if ( size >= MAX_DEMOD_BUF_LEN)
41 size = MAX_DEMOD_BUF_LEN;
42
ec75f5c1 43 size_t i = 0;
44 for (; i < size; i++){
45 DemodBuffer[i]=buff[startIdx++];
ba1a299c 46 }
47 DemodBufferLen=size;
48 return;
4118b74d 49}
50
ec75f5c1 51int CmdSetDebugMode(const char *Cmd)
52{
e0165dcf 53 int demod=0;
54 sscanf(Cmd, "%i", &demod);
55 g_debugMode=(uint8_t)demod;
56 return 1;
ec75f5c1 57}
58
2d2f7d19 59int usage_data_printdemodbuf(){
60 PrintAndLog("Usage: data printdemodbuffer x o <offset>");
61 PrintAndLog("Options: ");
62 PrintAndLog(" h This help");
63 PrintAndLog(" x output in hex (omit for binary output)");
64 PrintAndLog(" o <offset> enter offset in # of bits");
65 return 0;
66}
67
4118b74d 68//by marshmellow
abd6112f 69void printDemodBuff(void)
4118b74d 70{
ba1a299c 71 int bitLen = DemodBufferLen;
2767fc02 72 if (bitLen<1) {
ba1a299c 73 PrintAndLog("no bits found in demod buffer");
74 return;
75 }
76 if (bitLen>512) bitLen=512; //max output to 512 bits if we have more - should be plenty
e0165dcf 77
2767fc02 78 char *bin = sprint_bin_break(DemodBuffer,bitLen,16);
79 PrintAndLog("%s",bin);
80
ba1a299c 81 return;
4118b74d 82}
83
8d960002 84int CmdPrintDemodBuff(const char *Cmd)
85{
2d2f7d19 86 char hex[512]={0x00};
87 bool hexMode = false;
88 bool errors = false;
89 uint8_t offset = 0;
90 char cmdp = 0;
91 while(param_getchar(Cmd, cmdp) != 0x00)
92 {
93 switch(param_getchar(Cmd, cmdp))
94 {
95 case 'h':
96 case 'H':
97 return usage_data_printdemodbuf();
98 case 'x':
99 case 'X':
100 hexMode = true;
101 cmdp++;
102 break;
103 case 'o':
104 case 'O':
105 offset = param_get8(Cmd, cmdp+1);
106 if (!offset) errors = true;
107 cmdp += 2;
108 break;
109 default:
110 PrintAndLog("Unknown parameter '%c'", param_getchar(Cmd, cmdp));
111 errors = true;
112 break;
113 }
114 if(errors) break;
e0165dcf 115 }
2d2f7d19 116 //Validations
117 if(errors) return usage_data_printdemodbuf();
118
119 int numBits = (DemodBufferLen-offset) & 0x7FC; //make sure we don't exceed our string
120
121 if (hexMode){
122 char *buf = (char *) (DemodBuffer + offset);
123 numBits = binarraytohex(hex, buf, numBits);
e0165dcf 124 if (numBits==0) return 0;
2d2f7d19 125 PrintAndLog("DemodBuffer: %s",hex);
e0165dcf 126 } else {
2d2f7d19 127 //setDemodBuf(DemodBuffer, DemodBufferLen-offset, offset);
128 char *bin = sprint_bin_break(DemodBuffer+offset,numBits,16);
129 PrintAndLog("DemodBuffer:\n%s",bin);
e0165dcf 130 }
131 return 1;
8d960002 132}
7fe9b0b7 133
2767fc02 134//by marshmellow
78f5b1a7 135//this function strictly converts >1 to 1 and <1 to 0 for each sample in the graphbuffer
136int CmdGetBitStream(const char *Cmd)
137{
e0165dcf 138 int i;
139 CmdHpf(Cmd);
140 for (i = 0; i < GraphTraceLen; i++) {
141 if (GraphBuffer[i] >= 1) {
142 GraphBuffer[i] = 1;
143 } else {
144 GraphBuffer[i] = 0;
145 }
146 }
147 RepaintGraphWindow();
148 return 0;
78f5b1a7 149}
150
d5a72d2f 151//by marshmellow
abd6112f 152//print 64 bit EM410x ID in multiple formats
b41534d1 153void printEM410x(uint32_t hi, uint64_t id)
2fc2150e 154{
e0165dcf 155 if (id || hi){
156 uint64_t iii=1;
157 uint64_t id2lo=0;
158 uint32_t ii=0;
159 uint32_t i=0;
160 for (ii=5; ii>0;ii--){
161 for (i=0;i<8;i++){
162 id2lo=(id2lo<<1LL) | ((id & (iii << (i+((ii-1)*8)))) >> (i+((ii-1)*8)));
163 }
164 }
165 if (hi){
166 //output 88 bit em id
2767fc02 167 PrintAndLog("\nEM TAG ID : %06X%016llX", hi, id);
e0165dcf 168 } else{
169 //output 40 bit em id
2767fc02 170 PrintAndLog("\nEM TAG ID : %010llX", id);
171 PrintAndLog("Unique TAG ID : %010llX", id2lo);
e0165dcf 172 PrintAndLog("\nPossible de-scramble patterns");
173 PrintAndLog("HoneyWell IdentKey {");
174 PrintAndLog("DEZ 8 : %08lld",id & 0xFFFFFF);
175 PrintAndLog("DEZ 10 : %010lld",id & 0xFFFFFFFF);
176 PrintAndLog("DEZ 5.5 : %05lld.%05lld",(id>>16LL) & 0xFFFF,(id & 0xFFFF));
177 PrintAndLog("DEZ 3.5A : %03lld.%05lld",(id>>32ll),(id & 0xFFFF));
178 PrintAndLog("DEZ 3.5B : %03lld.%05lld",(id & 0xFF000000) >> 24,(id & 0xFFFF));
179 PrintAndLog("DEZ 3.5C : %03lld.%05lld",(id & 0xFF0000) >> 16,(id & 0xFFFF));
180 PrintAndLog("DEZ 14/IK2 : %014lld",id);
181 PrintAndLog("DEZ 15/IK3 : %015lld",id2lo);
182 PrintAndLog("DEZ 20/ZK : %02lld%02lld%02lld%02lld%02lld%02lld%02lld%02lld%02lld%02lld",
183 (id2lo & 0xf000000000) >> 36,
184 (id2lo & 0x0f00000000) >> 32,
185 (id2lo & 0x00f0000000) >> 28,
186 (id2lo & 0x000f000000) >> 24,
187 (id2lo & 0x0000f00000) >> 20,
188 (id2lo & 0x00000f0000) >> 16,
189 (id2lo & 0x000000f000) >> 12,
190 (id2lo & 0x0000000f00) >> 8,
191 (id2lo & 0x00000000f0) >> 4,
192 (id2lo & 0x000000000f)
193 );
194 uint64_t paxton = (((id>>32) << 24) | (id & 0xffffff)) + 0x143e00;
195 PrintAndLog("}\nOther : %05lld_%03lld_%08lld",(id&0xFFFF),((id>>16LL) & 0xFF),(id & 0xFFFFFF));
2767fc02 196 PrintAndLog("Pattern Paxton : %lld [0x%llX]", paxton, paxton);
e0165dcf 197
198 uint32_t p1id = (id & 0xFFFFFF);
199 uint8_t arr[32] = {0x00};
200 int i =0;
201 int j = 23;
202 for (; i < 24; ++i, --j ){
203 arr[i] = (p1id >> i) & 1;
204 }
205
206 uint32_t p1 = 0;
207
208 p1 |= arr[23] << 21;
209 p1 |= arr[22] << 23;
210 p1 |= arr[21] << 20;
211 p1 |= arr[20] << 22;
212
213 p1 |= arr[19] << 18;
214 p1 |= arr[18] << 16;
215 p1 |= arr[17] << 19;
216 p1 |= arr[16] << 17;
217
218 p1 |= arr[15] << 13;
219 p1 |= arr[14] << 15;
220 p1 |= arr[13] << 12;
221 p1 |= arr[12] << 14;
222
223 p1 |= arr[11] << 6;
224 p1 |= arr[10] << 2;
225 p1 |= arr[9] << 7;
226 p1 |= arr[8] << 1;
227
228 p1 |= arr[7] << 0;
229 p1 |= arr[6] << 8;
230 p1 |= arr[5] << 11;
231 p1 |= arr[4] << 3;
232
233 p1 |= arr[3] << 10;
234 p1 |= arr[2] << 4;
235 p1 |= arr[1] << 5;
236 p1 |= arr[0] << 9;
2767fc02 237 PrintAndLog("Pattern 1 : %d [0x%X]", p1, p1);
e0165dcf 238
239 uint16_t sebury1 = id & 0xFFFF;
240 uint8_t sebury2 = (id >> 16) & 0x7F;
241 uint32_t sebury3 = id & 0x7FFFFF;
2767fc02 242 PrintAndLog("Pattern Sebury : %d %d %d [0x%X 0x%X 0x%X]", sebury1, sebury2, sebury3, sebury1, sebury2, sebury3);
e0165dcf 243 }
244 }
245 return;
eb191de6 246}
247
fef74fdc 248int AskEm410xDecode(bool verbose, uint32_t *hi, uint64_t *lo )
13d77ef9 249{
fef74fdc 250 size_t idx = 0;
251 size_t BitLen = DemodBufferLen;
252 uint8_t BitStream[MAX_GRAPH_TRACE_LEN]={0};
253 memcpy(BitStream, DemodBuffer, BitLen);
254 if (Em410xDecode(BitStream, &BitLen, &idx, hi, lo)){
255 //set GraphBuffer for clone or sim command
256 setDemodBuf(BitStream, BitLen, idx);
e0165dcf 257 if (g_debugMode){
fef74fdc 258 PrintAndLog("DEBUG: idx: %d, Len: %d, Printing Demod Buffer:", idx, BitLen);
e0165dcf 259 printDemodBuff();
260 }
fef74fdc 261 if (verbose){
262 PrintAndLog("EM410x pattern found: ");
263 printEM410x(*hi, *lo);
264 }
e0165dcf 265 return 1;
266 }
267 return 0;
13d77ef9 268}
fef74fdc 269
270int AskEm410xDemod(const char *Cmd, uint32_t *hi, uint64_t *lo, bool verbose)
271{
272 if (!ASKDemod(Cmd, FALSE, FALSE, 1)) return 0;
273 return AskEm410xDecode(verbose, hi, lo);
274}
275
e888ed8e 276//by marshmellow
e770c648 277//takes 3 arguments - clock, invert and maxErr as integers
278//attempts to demodulate ask while decoding manchester
279//prints binary found and saves in graphbuffer for further commands
280int CmdAskEM410xDemod(const char *Cmd)
281{
e0165dcf 282 char cmdp = param_getchar(Cmd, 0);
283 if (strlen(Cmd) > 10 || cmdp == 'h' || cmdp == 'H') {
284 PrintAndLog("Usage: data askem410xdemod [clock] <0|1> [maxError]");
285 PrintAndLog(" [set clock as integer] optional, if not set, autodetect.");
286 PrintAndLog(" <invert>, 1 for invert output");
287 PrintAndLog(" [set maximum allowed errors], default = 100.");
288 PrintAndLog("");
289 PrintAndLog(" sample: data askem410xdemod = demod an EM410x Tag ID from GraphBuffer");
290 PrintAndLog(" : data askem410xdemod 32 = demod an EM410x Tag ID from GraphBuffer using a clock of RF/32");
291 PrintAndLog(" : data askem410xdemod 32 1 = demod an EM410x Tag ID from GraphBuffer using a clock of RF/32 and inverting data");
292 PrintAndLog(" : data askem410xdemod 1 = demod an EM410x Tag ID from GraphBuffer while inverting data");
293 PrintAndLog(" : data askem410xdemod 64 1 0 = demod an EM410x Tag ID from GraphBuffer using a clock of RF/64 and inverting data and allowing 0 demod errors");
294 return 0;
295 }
e0165dcf 296 uint64_t lo = 0;
fef74fdc 297 uint32_t hi = 0;
298 return AskEm410xDemod(Cmd, &hi, &lo, true);
e770c648 299}
300
fef74fdc 301//by marshmellow
302//Cmd Args: Clock, invert, maxErr, maxLen as integers and amplify as char == 'a'
303// (amp may not be needed anymore)
304//verbose will print results and demoding messages
305//emSearch will auto search for EM410x format in bitstream
306//askType switches decode: ask/raw = 0, ask/manchester = 1
307int ASKDemod(const char *Cmd, bool verbose, bool emSearch, uint8_t askType)
e888ed8e 308{
e0165dcf 309 int invert=0;
310 int clk=0;
311 int maxErr=100;
fef74fdc 312 int maxLen=0;
313 uint8_t askAmp = 0;
314 char amp = param_getchar(Cmd, 0);
e0165dcf 315 uint8_t BitStream[MAX_GRAPH_TRACE_LEN]={0};
fef74fdc 316 sscanf(Cmd, "%i %i %i %i %c", &clk, &invert, &maxErr, &maxLen, &amp);
317 if (!maxLen) maxLen = 512*64;
e0165dcf 318 if (invert != 0 && invert != 1) {
319 PrintAndLog("Invalid argument: %s", Cmd);
320 return 0;
321 }
322 if (clk==1){
323 invert=1;
324 clk=0;
325 }
fef74fdc 326 if (amp == 'a' || amp == 'A') askAmp=1;
e0165dcf 327 size_t BitLen = getFromGraphBuf(BitStream);
2767fc02 328 if (g_debugMode) PrintAndLog("DEBUG: Bitlen from grphbuff: %d",BitLen);
fef74fdc 329 if (BitLen<255) return 0;
23f0a7d8 330 if (maxLen<BitLen && maxLen != 0) BitLen = maxLen;
fef74fdc 331
332 int errCnt = askdemod(BitStream, &BitLen, &clk, &invert, maxErr, askAmp, askType);
333 if (errCnt<0 || BitLen<16){ //if fatal error (or -1)
2767fc02 334 if (g_debugMode) PrintAndLog("DEBUG: no data found %d, errors:%d, bitlen:%d, clock:%d",errCnt,invert,BitLen,clk);
e0165dcf 335 return 0;
336 }
2767fc02 337 if (errCnt>maxErr){
338 if (g_debugMode) PrintAndLog("DEBUG: Too many errors found, errors:%d, bits:%d, clock:%d",errCnt, BitLen, clk);
339 return 0;
340 }
341 if (verbose || g_debugMode) PrintAndLog("\nUsing Clock:%d, Invert:%d, Bits Found:%d",clk,invert,BitLen);
e0165dcf 342
343 //output
e0165dcf 344 setDemodBuf(BitStream,BitLen,0);
fef74fdc 345 if (verbose || g_debugMode){
346 if (errCnt>0) PrintAndLog("# Errors during Demoding (shown as 7 in bit stream): %d",errCnt);
1299c798 347 if (askType) PrintAndLog("ASK/Manchester - Clock: %d - Decoded bitstream:",clk);
348 else PrintAndLog("ASK/Raw - Clock: %d - Decoded bitstream:",clk);
fef74fdc 349 // Now output the bitstream to the scrollback by line of 16 bits
350 printDemodBuff();
351
352 }
353 uint64_t lo = 0;
354 uint32_t hi = 0;
e0165dcf 355 if (emSearch){
fef74fdc 356 AskEm410xDecode(true, &hi, &lo);
e0165dcf 357 }
358 return 1;
eb191de6 359}
360
4ac906d1 361//by marshmellow
fef74fdc 362//takes 5 arguments - clock, invert, maxErr, maxLen as integers and amplify as char == 'a'
4ac906d1 363//attempts to demodulate ask while decoding manchester
364//prints binary found and saves in graphbuffer for further commands
365int Cmdaskmandemod(const char *Cmd)
366{
e0165dcf 367 char cmdp = param_getchar(Cmd, 0);
fef74fdc 368 if (strlen(Cmd) > 25 || cmdp == 'h' || cmdp == 'H') {
369 PrintAndLog("Usage: data rawdemod am [clock] <invert> [maxError] [maxLen] [amplify]");
370 PrintAndLog(" [set clock as integer] optional, if not set, autodetect");
371 PrintAndLog(" <invert>, 1 to invert output");
372 PrintAndLog(" [set maximum allowed errors], default = 100");
373 PrintAndLog(" [set maximum Samples to read], default = 32768 (512 bits at rf/64)");
374 PrintAndLog(" <amplify>, 'a' to attempt demod with ask amplification, default = no amp");
e0165dcf 375 PrintAndLog("");
376 PrintAndLog(" sample: data rawdemod am = demod an ask/manchester tag from GraphBuffer");
377 PrintAndLog(" : data rawdemod am 32 = demod an ask/manchester tag from GraphBuffer using a clock of RF/32");
378 PrintAndLog(" : data rawdemod am 32 1 = demod an ask/manchester tag from GraphBuffer using a clock of RF/32 and inverting data");
379 PrintAndLog(" : data rawdemod am 1 = demod an ask/manchester tag from GraphBuffer while inverting data");
380 PrintAndLog(" : data rawdemod am 64 1 0 = demod an ask/manchester tag from GraphBuffer using a clock of RF/64, inverting data and allowing 0 demod errors");
381 return 0;
382 }
fef74fdc 383 return ASKDemod(Cmd, TRUE, TRUE, 1);
4ac906d1 384}
385
eb191de6 386//by marshmellow
d5a72d2f 387//manchester decode
eb191de6 388//stricktly take 10 and 01 and convert to 0 and 1
389int Cmdmandecoderaw(const char *Cmd)
390{
e0165dcf 391 int i =0;
392 int errCnt=0;
393 size_t size=0;
fef74fdc 394 int invert=0;
e0165dcf 395 size_t maxErr = 20;
396 char cmdp = param_getchar(Cmd, 0);
1f918317 397 if (strlen(Cmd) > 5 || cmdp == 'h' || cmdp == 'H') {
fef74fdc 398 PrintAndLog("Usage: data manrawdecode [invert] [maxErr]");
e0165dcf 399 PrintAndLog(" Takes 10 and 01 and converts to 0 and 1 respectively");
400 PrintAndLog(" --must have binary sequence in demodbuffer (run data askrawdemod first)");
fef74fdc 401 PrintAndLog(" [invert] invert output");
1f918317 402 PrintAndLog(" [maxErr] set number of errors allowed (default = 20)");
e0165dcf 403 PrintAndLog("");
404 PrintAndLog(" sample: data manrawdecode = decode manchester bitstream from the demodbuffer");
405 return 0;
406 }
407 if (DemodBufferLen==0) return 0;
408 uint8_t BitStream[MAX_GRAPH_TRACE_LEN]={0};
409 int high=0,low=0;
410 for (;i<DemodBufferLen;++i){
411 if (DemodBuffer[i]>high) high=DemodBuffer[i];
412 else if(DemodBuffer[i]<low) low=DemodBuffer[i];
413 BitStream[i]=DemodBuffer[i];
414 }
1f918317 415 if (high>7 || low <0 ){
2767fc02 416 PrintAndLog("Error: please raw demod the wave first then manchester raw decode");
e0165dcf 417 return 0;
418 }
1f918317 419
fef74fdc 420 sscanf(Cmd, "%i %i", &invert, &maxErr);
e0165dcf 421 size=i;
fef74fdc 422 errCnt=manrawdecode(BitStream, &size, invert);
e0165dcf 423 if (errCnt>=maxErr){
424 PrintAndLog("Too many errors: %d",errCnt);
425 return 0;
426 }
427 PrintAndLog("Manchester Decoded - # errors:%d - data:",errCnt);
2767fc02 428 PrintAndLog("%s", sprint_bin_break(BitStream, size, 16));
e0165dcf 429 if (errCnt==0){
430 uint64_t id = 0;
431 uint32_t hi = 0;
432 size_t idx=0;
433 if (Em410xDecode(BitStream, &size, &idx, &hi, &id)){
434 //need to adjust to set bitstream back to manchester encoded data
435 //setDemodBuf(BitStream, size, idx);
436
437 printEM410x(hi, id);
438 }
439 }
440 return 1;
d5a72d2f 441}
442
443//by marshmellow
444//biphase decode
445//take 01 or 10 = 0 and 11 or 00 = 1
1e090a61 446//takes 2 arguments "offset" default = 0 if 1 it will shift the decode by one bit
447// and "invert" default = 0 if 1 it will invert output
2767fc02 448// the argument offset allows us to manually shift if the output is incorrect - [EDIT: now auto detects]
d5a72d2f 449int CmdBiphaseDecodeRaw(const char *Cmd)
450{
ba1a299c 451 size_t size=0;
b41534d1 452 int offset=0, invert=0, maxErr=20, errCnt=0;
b4fb11ba 453 char cmdp = param_getchar(Cmd, 0);
454 if (strlen(Cmd) > 3 || cmdp == 'h' || cmdp == 'H') {
b41534d1 455 PrintAndLog("Usage: data biphaserawdecode [offset] [invert] [maxErr]");
456 PrintAndLog(" Converts 10 or 01 to 1 and 11 or 00 to 0");
b4fb11ba 457 PrintAndLog(" --must have binary sequence in demodbuffer (run data askrawdemod first)");
e0165dcf 458 PrintAndLog(" --invert for Conditional Dephase Encoding (CDP) AKA Differential Manchester");
b4fb11ba 459 PrintAndLog("");
460 PrintAndLog(" [offset <0|1>], set to 0 not to adjust start position or to 1 to adjust decode start position");
461 PrintAndLog(" [invert <0|1>], set to 1 to invert output");
b41534d1 462 PrintAndLog(" [maxErr int], set max errors tolerated - default=20");
b4fb11ba 463 PrintAndLog("");
464 PrintAndLog(" sample: data biphaserawdecode = decode biphase bitstream from the demodbuffer");
465 PrintAndLog(" sample: data biphaserawdecode 1 1 = decode biphase bitstream from the demodbuffer, set offset, and invert output");
466 return 0;
467 }
b41534d1 468 sscanf(Cmd, "%i %i %i", &offset, &invert, &maxErr);
469 if (DemodBufferLen==0){
470 PrintAndLog("DemodBuffer Empty - run 'data rawdemod ar' first");
b4fb11ba 471 return 0;
472 }
b41534d1 473 uint8_t BitStream[MAX_GRAPH_TRACE_LEN]={0};
474 memcpy(BitStream, DemodBuffer, DemodBufferLen);
475 size = DemodBufferLen;
1e090a61 476 errCnt=BiphaseRawDecode(BitStream, &size, offset, invert);
b41534d1 477 if (errCnt<0){
478 PrintAndLog("Error during decode:%d", errCnt);
479 return 0;
480 }
481 if (errCnt>maxErr){
b4fb11ba 482 PrintAndLog("Too many errors attempting to decode: %d",errCnt);
483 return 0;
484 }
b41534d1 485
486 if (errCnt>0){
2767fc02 487 PrintAndLog("# Errors found during Demod (shown as 7 in bit stream): %d",errCnt);
b41534d1 488 }
489 PrintAndLog("Biphase Decoded using offset: %d - # invert:%d - data:",offset,invert);
2767fc02 490 PrintAndLog("%s", sprint_bin_break(BitStream, size, 16));
b41534d1 491
492 if (offset) setDemodBuf(DemodBuffer,DemodBufferLen-offset, offset); //remove first bit from raw demod
b4fb11ba 493 return 1;
eb191de6 494}
495
b41534d1 496//by marshmellow
497// - ASK Demod then Biphase decode GraphBuffer samples
498int ASKbiphaseDemod(const char *Cmd, bool verbose)
499{
500 //ask raw demod GraphBuffer first
501 int offset=0, clk=0, invert=0, maxErr=0, ans=0;
1299c798 502 ans = sscanf(Cmd, "%i %i %i %i", &offset, &clk, &invert, &maxErr);
503
504 if ( ans < 1) {
505 if (g_debugMode || verbose) PrintAndLog("Error when reading input parameters: %d", ans);
b41534d1 506 return 0;
507 }
1299c798 508
b41534d1 509 uint8_t BitStream[MAX_DEMOD_BUF_LEN];
1299c798 510 size_t size = getFromGraphBuf(BitStream);
511
512 int errCnt = askdemod(BitStream, &size, &clk, 0, maxErr, 0, 0);
513 if ( errCnt < 0 || errCnt > maxErr ) {
514 if (g_debugMode) PrintAndLog("DEBUG: no data or error found %d, clock: %d", errCnt, clk);
515 return 0;
516 }
517
518 //attempt to Biphase decode BitStream
519 errCnt = BiphaseRawDecode(BitStream, &size, offset, invert);
b41534d1 520 if (errCnt < 0){
521 if (g_debugMode || verbose) PrintAndLog("Error BiphaseRawDecode: %d", errCnt);
522 return 0;
523 }
524 if (errCnt > maxErr) {
525 if (g_debugMode || verbose) PrintAndLog("Error BiphaseRawDecode too many errors: %d", errCnt);
526 return 0;
527 }
528 //success set DemodBuffer and return
529 setDemodBuf(BitStream, size, 0);
530 if (g_debugMode || verbose){
1299c798 531 PrintAndLog("Biphase Decoded using offset: %d - clock: %d - # errors:%d - data:",offset,clk,errCnt);
b41534d1 532 printDemodBuff();
533 }
534 return 1;
535}
536//by marshmellow - see ASKbiphaseDemod
537int Cmdaskbiphdemod(const char *Cmd)
538{
e0165dcf 539 char cmdp = param_getchar(Cmd, 0);
fef74fdc 540 if (strlen(Cmd) > 25 || cmdp == 'h' || cmdp == 'H') {
541 PrintAndLog("Usage: data rawdemod ab [offset] [clock] <invert> [maxError] [maxLen] <amplify>");
e0165dcf 542 PrintAndLog(" [offset], offset to begin biphase, default=0");
543 PrintAndLog(" [set clock as integer] optional, if not set, autodetect");
544 PrintAndLog(" <invert>, 1 to invert output");
545 PrintAndLog(" [set maximum allowed errors], default = 100");
fef74fdc 546 PrintAndLog(" [set maximum Samples to read], default = 32768 (512 bits at rf/64)");
e0165dcf 547 PrintAndLog(" <amplify>, 'a' to attempt demod with ask amplification, default = no amp");
548 PrintAndLog(" NOTE: <invert> can be entered as second or third argument");
549 PrintAndLog(" NOTE: <amplify> can be entered as first, second or last argument");
550 PrintAndLog(" NOTE: any other arg must have previous args set to work");
551 PrintAndLog("");
552 PrintAndLog(" NOTE: --invert for Conditional Dephase Encoding (CDP) AKA Differential Manchester");
553 PrintAndLog("");
fef74fdc 554 PrintAndLog(" sample: data rawdemod ab = demod an ask/biph tag from GraphBuffer");
555 PrintAndLog(" : data rawdemod ab 0 a = demod an ask/biph tag from GraphBuffer, amplified");
556 PrintAndLog(" : data rawdemod ab 1 32 = demod an ask/biph tag from GraphBuffer using an offset of 1 and a clock of RF/32");
557 PrintAndLog(" : data rawdemod ab 0 32 1 = demod an ask/biph tag from GraphBuffer using a clock of RF/32 and inverting data");
558 PrintAndLog(" : data rawdemod ab 0 1 = demod an ask/biph tag from GraphBuffer while inverting data");
559 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");
560 PrintAndLog(" : data rawdemod ab 0 64 1 0 0 a = demod an ask/biph tag from GraphBuffer using a clock of RF/64, inverting data and allowing 0 demod errors, and amp");
e0165dcf 561 return 0;
562 }
563 return ASKbiphaseDemod(Cmd, TRUE);
b41534d1 564}
565
8d960002 566//by marshmellow
567//attempts to demodulate and identify a G_Prox_II verex/chubb card
568//WARNING: if it fails during some points it will destroy the DemodBuffer data
569// but will leave the GraphBuffer intact.
570//if successful it will push askraw data back to demod buffer ready for emulation
571int CmdG_Prox_II_Demod(const char *Cmd)
572{
e0165dcf 573 if (!ASKbiphaseDemod(Cmd, FALSE)){
574 if (g_debugMode) PrintAndLog("ASKbiphaseDemod failed 1st try");
575 return 0;
576 }
577 size_t size = DemodBufferLen;
578 //call lfdemod.c demod for gProxII
579 int ans = gProxII_Demod(DemodBuffer, &size);
580 if (ans < 0){
581 if (g_debugMode) PrintAndLog("Error gProxII_Demod");
582 return 0;
583 }
584 //got a good demod
585 uint32_t ByteStream[65] = {0x00};
586 uint8_t xorKey=0;
587 uint8_t keyCnt=0;
588 uint8_t bitCnt=0;
589 uint8_t ByteCnt=0;
590 size_t startIdx = ans + 6; //start after preamble
591 for (size_t idx = 0; idx<size-6; idx++){
592 if ((idx+1) % 5 == 0){
593 //spacer bit - should be 0
594 if (DemodBuffer[startIdx+idx] != 0) {
595 if (g_debugMode) PrintAndLog("Error spacer not 0: %d, pos: %d",DemodBuffer[startIdx+idx],startIdx+idx);
596 return 0;
597 }
598 continue;
599 }
600 if (keyCnt<8){ //lsb first
601 xorKey = xorKey | (DemodBuffer[startIdx+idx]<<keyCnt);
602 keyCnt++;
603 if (keyCnt==8 && g_debugMode) PrintAndLog("xorKey Found: %02x", xorKey);
604 continue;
605 }
606 //lsb first
607 ByteStream[ByteCnt] = ByteStream[ByteCnt] | (DemodBuffer[startIdx+idx]<<bitCnt);
608 bitCnt++;
609 if (bitCnt % 8 == 0){
610 if (g_debugMode) PrintAndLog("byte %d: %02x",ByteCnt,ByteStream[ByteCnt]);
611 bitCnt=0;
612 ByteCnt++;
613 }
614 }
615 for (uint8_t i = 0; i < ByteCnt; i++){
616 ByteStream[i] ^= xorKey; //xor
617 if (g_debugMode) PrintAndLog("byte %d after xor: %02x", i, ByteStream[i]);
618 }
619 //now ByteStream contains 64 bytes of decrypted raw tag data
620 //
621 uint8_t fmtLen = ByteStream[0]>>2;
622 uint32_t FC = 0;
623 uint32_t Card = 0;
624 uint32_t raw1 = bytebits_to_byte(DemodBuffer+ans,32);
625 uint32_t raw2 = bytebits_to_byte(DemodBuffer+ans+32, 32);
626 uint32_t raw3 = bytebits_to_byte(DemodBuffer+ans+64, 32);
627
628 if (fmtLen==36){
629 FC = ((ByteStream[3] & 0x7F)<<7) | (ByteStream[4]>>1);
630 Card = ((ByteStream[4]&1)<<19) | (ByteStream[5]<<11) | (ByteStream[6]<<3) | (ByteStream[7]>>5);
631 PrintAndLog("G-Prox-II Found: FmtLen %d, FC %d, Card %d",fmtLen,FC,Card);
632 } else if(fmtLen==26){
633 FC = ((ByteStream[3] & 0x7F)<<1) | (ByteStream[4]>>7);
634 Card = ((ByteStream[4]&0x7F)<<9) | (ByteStream[5]<<1) | (ByteStream[6]>>7);
635 PrintAndLog("G-Prox-II Found: FmtLen %d, FC %d, Card %d",fmtLen,FC,Card);
636 } else {
637 PrintAndLog("Unknown G-Prox-II Fmt Found: FmtLen %d",fmtLen);
638 }
639 PrintAndLog("Raw: %08x%08x%08x", raw1,raw2,raw3);
640 setDemodBuf(DemodBuffer+ans, 96, 0);
641 return 1;
8d960002 642}
643
fef74fdc 644//by marshmellow - see ASKDemod
4ac906d1 645int Cmdaskrawdemod(const char *Cmd)
646{
e0165dcf 647 char cmdp = param_getchar(Cmd, 0);
fef74fdc 648 if (strlen(Cmd) > 25 || cmdp == 'h' || cmdp == 'H') {
649 PrintAndLog("Usage: data rawdemod ar [clock] <invert> [maxError] [maxLen] [amplify]");
e0165dcf 650 PrintAndLog(" [set clock as integer] optional, if not set, autodetect");
651 PrintAndLog(" <invert>, 1 to invert output");
652 PrintAndLog(" [set maximum allowed errors], default = 100");
fef74fdc 653 PrintAndLog(" [set maximum Samples to read], default = 32768 (1024 bits at rf/64)");
e0165dcf 654 PrintAndLog(" <amplify>, 'a' to attempt demod with ask amplification, default = no amp");
655 PrintAndLog("");
fef74fdc 656 PrintAndLog(" sample: data rawdemod ar = demod an ask tag from GraphBuffer");
657 PrintAndLog(" : data rawdemod ar a = demod an ask tag from GraphBuffer, amplified");
658 PrintAndLog(" : data rawdemod ar 32 = demod an ask tag from GraphBuffer using a clock of RF/32");
659 PrintAndLog(" : data rawdemod ar 32 1 = demod an ask tag from GraphBuffer using a clock of RF/32 and inverting data");
660 PrintAndLog(" : data rawdemod ar 1 = demod an ask tag from GraphBuffer while inverting data");
661 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");
662 PrintAndLog(" : data rawdemod ar 64 1 0 0 a = demod an ask tag from GraphBuffer using a clock of RF/64, inverting data and allowing 0 demod errors, and amp");
e0165dcf 663 return 0;
664 }
fef74fdc 665 return ASKDemod(Cmd, TRUE, FALSE, 0);
4ac906d1 666}
667
73d04bb4 668int AutoCorrelate(int window, bool SaveGrph, bool verbose)
7fe9b0b7 669{
e0165dcf 670 static int CorrelBuffer[MAX_GRAPH_TRACE_LEN];
671 size_t Correlation = 0;
672 int maxSum = 0;
673 int lastMax = 0;
674 if (verbose) PrintAndLog("performing %d correlations", GraphTraceLen - window);
675 for (int i = 0; i < GraphTraceLen - window; ++i) {
676 int sum = 0;
677 for (int j = 0; j < window; ++j) {
678 sum += (GraphBuffer[j]*GraphBuffer[i + j]) / 256;
679 }
680 CorrelBuffer[i] = sum;
681 if (sum >= maxSum-100 && sum <= maxSum+100){
682 //another max
683 Correlation = i-lastMax;
684 lastMax = i;
685 if (sum > maxSum) maxSum = sum;
686 } else if (sum > maxSum){
687 maxSum=sum;
688 lastMax = i;
689 }
690 }
691 if (Correlation==0){
692 //try again with wider margin
693 for (int i = 0; i < GraphTraceLen - window; i++){
694 if (CorrelBuffer[i] >= maxSum-(maxSum*0.05) && CorrelBuffer[i] <= maxSum+(maxSum*0.05)){
695 //another max
696 Correlation = i-lastMax;
697 lastMax = i;
698 //if (CorrelBuffer[i] > maxSum) maxSum = sum;
699 }
700 }
701 }
702 if (verbose && Correlation > 0) PrintAndLog("Possible Correlation: %d samples",Correlation);
703
704 if (SaveGrph){
705 GraphTraceLen = GraphTraceLen - window;
706 memcpy(GraphBuffer, CorrelBuffer, GraphTraceLen * sizeof (int));
707 RepaintGraphWindow();
708 }
709 return Correlation;
73d04bb4 710}
7fe9b0b7 711
9f7bbd24 712int usage_data_autocorr(void)
713{
e0165dcf 714 //print help
715 PrintAndLog("Usage: data autocorr [window] [g]");
716 PrintAndLog("Options: ");
717 PrintAndLog(" h This help");
718 PrintAndLog(" [window] window length for correlation - default = 4000");
719 PrintAndLog(" g save back to GraphBuffer (overwrite)");
720 return 0;
9f7bbd24 721}
722
73d04bb4 723int CmdAutoCorr(const char *Cmd)
724{
e0165dcf 725 char cmdp = param_getchar(Cmd, 0);
726 if (cmdp == 'h' || cmdp == 'H')
727 return usage_data_autocorr();
728 int window = 4000; //set default
729 char grph=0;
730 bool updateGrph = FALSE;
731 sscanf(Cmd, "%i %c", &window, &grph);
732
733 if (window >= GraphTraceLen) {
734 PrintAndLog("window must be smaller than trace (%d samples)",
735 GraphTraceLen);
736 return 0;
737 }
738 if (grph == 'g') updateGrph=TRUE;
739 return AutoCorrelate(window, updateGrph, TRUE);
7fe9b0b7 740}
741
742int CmdBitsamples(const char *Cmd)
743{
e0165dcf 744 int cnt = 0;
745 uint8_t got[12288];
952a8bb5 746
e0165dcf 747 GetFromBigBuf(got,sizeof(got),0);
748 WaitForResponse(CMD_ACK,NULL);
7fe9b0b7 749
e0165dcf 750 for (int j = 0; j < sizeof(got); j++) {
751 for (int k = 0; k < 8; k++) {
752 if(got[j] & (1 << (7 - k))) {
753 GraphBuffer[cnt++] = 1;
754 } else {
755 GraphBuffer[cnt++] = 0;
756 }
757 }
758 }
759 GraphTraceLen = cnt;
760 RepaintGraphWindow();
761 return 0;
7fe9b0b7 762}
763
7fe9b0b7 764int CmdBuffClear(const char *Cmd)
765{
e0165dcf 766 UsbCommand c = {CMD_BUFF_CLEAR};
767 SendCommand(&c);
768 ClearGraph(true);
769 return 0;
7fe9b0b7 770}
771
772int CmdDec(const char *Cmd)
773{
e0165dcf 774 for (int i = 0; i < (GraphTraceLen / 2); ++i)
775 GraphBuffer[i] = GraphBuffer[i * 2];
776 GraphTraceLen /= 2;
777 PrintAndLog("decimated by 2");
778 RepaintGraphWindow();
779 return 0;
7fe9b0b7 780}
698b649e
MHS		 781/**
782 * Undecimate - I'd call it 'interpolate', but we'll save that
783 * name until someone does an actual interpolation command, not just
784 * blindly repeating samples
785 * @param Cmd
786 * @return
787 */
788int CmdUndec(const char *Cmd)
789{
c856ceae
MHS		 790 if(param_getchar(Cmd, 0) == 'h')
791 {
792 PrintAndLog("Usage: data undec [factor]");
793 PrintAndLog("This function performs un-decimation, by repeating each sample N times");
794 PrintAndLog("Options: ");
795 PrintAndLog(" h This help");
796 PrintAndLog(" factor The number of times to repeat each sample.[default:2]");
797 PrintAndLog("Example: 'data undec 3'");
798 return 0;
799 }
800
801 uint8_t factor = param_get8ex(Cmd, 0,2, 10);
698b649e
MHS		 802 //We have memory, don't we?
803 int swap[MAX_GRAPH_TRACE_LEN] = { 0 };
c856ceae
MHS		 804 uint32_t g_index = 0 ,s_index = 0;
805 while(g_index < GraphTraceLen && s_index < MAX_GRAPH_TRACE_LEN)
698b649e 806 {
c856ceae
MHS		 807 int count = 0;
808 for(count = 0; count < factor && s_index+count < MAX_GRAPH_TRACE_LEN; count ++)
809 swap[s_index+count] = GraphBuffer[g_index];
810 s_index+=count;
698b649e 811 }
698b649e 812
c856ceae
MHS		 813 memcpy(GraphBuffer,swap, s_index * sizeof(int));
814 GraphTraceLen = s_index;
815 RepaintGraphWindow();
698b649e
MHS		 816 return 0;
817}
7fe9b0b7 818
ec75f5c1 819//by marshmellow
820//shift graph zero up or down based on input + or -
821int CmdGraphShiftZero(const char *Cmd)
822{
823
e0165dcf 824 int shift=0;
825 //set options from parameters entered with the command
826 sscanf(Cmd, "%i", &shift);
827 int shiftedVal=0;
828 for(int i = 0; i<GraphTraceLen; i++){
829 shiftedVal=GraphBuffer[i]+shift;
830 if (shiftedVal>127)
831 shiftedVal=127;
832 else if (shiftedVal<-127)
833 shiftedVal=-127;
834 GraphBuffer[i]= shiftedVal;
835 }
836 CmdNorm("");
837 return 0;
ec75f5c1 838}
839
6de43508 840//by marshmellow
841//use large jumps in read samples to identify edges of waves and then amplify that wave to max
2767fc02 842//similar to dirtheshold, threshold commands
6de43508 843//takes a threshold length which is the measured length between two samples then determines an edge
844int CmdAskEdgeDetect(const char *Cmd)
845{
e0165dcf 846 int thresLen = 25;
847 sscanf(Cmd, "%i", &thresLen);
49bbc60a 848
e0165dcf 849 for(int i = 1; i<GraphTraceLen; i++){
850 if (GraphBuffer[i]-GraphBuffer[i-1]>=thresLen) //large jump up
49bbc60a 851 GraphBuffer[i-1] = 127;
e0165dcf 852 else if(GraphBuffer[i]-GraphBuffer[i-1]<=-1*thresLen) //large jump down
49bbc60a 853 GraphBuffer[i-1] = -127;
e0165dcf 854 }
855 RepaintGraphWindow();
e0165dcf 856 return 0;
6de43508 857}
858
7fe9b0b7 859/* Print our clock rate */
ba1a299c 860// uses data from graphbuffer
f3bf15e4 861// adjusted to take char parameter for type of modulation to find the clock - by marshmellow.
7fe9b0b7 862int CmdDetectClockRate(const char *Cmd)
863{
f3bf15e4 864 char cmdp = param_getchar(Cmd, 0);
fef74fdc 865 if (strlen(Cmd) > 6 || strlen(Cmd) == 0 || cmdp == 'h' || cmdp == 'H') {
866 PrintAndLog("Usage: data detectclock [modulation] <clock>");
f3bf15e4 867 PrintAndLog(" [modulation as char], specify the modulation type you want to detect the clock of");
fef74fdc 868 PrintAndLog(" <clock> , specify the clock (optional - to get best start position only)");
f3bf15e4 869 PrintAndLog(" 'a' = ask, 'f' = fsk, 'n' = nrz/direct, 'p' = psk");
870 PrintAndLog("");
871 PrintAndLog(" sample: data detectclock a = detect the clock of an ask modulated wave in the GraphBuffer");
872 PrintAndLog(" data detectclock f = detect the clock of an fsk modulated wave in the GraphBuffer");
873 PrintAndLog(" data detectclock p = detect the clock of an psk modulated wave in the GraphBuffer");
874 PrintAndLog(" data detectclock n = detect the clock of an nrz/direct modulated wave in the GraphBuffer");
875 }
876 int ans=0;
877 if (cmdp == 'a'){
fef74fdc 878 ans = GetAskClock(Cmd+1, true, false);
f3bf15e4 879 } else if (cmdp == 'f'){
880 ans = GetFskClock("", true, false);
881 } else if (cmdp == 'n'){
882 ans = GetNrzClock("", true, false);
883 } else if (cmdp == 'p'){
884 ans = GetPskClock("", true, false);
885 } else {
886 PrintAndLog ("Please specify a valid modulation to detect the clock of - see option h for help");
887 }
888 return ans;
7fe9b0b7 889}
66707a3b 890
2767fc02 891char *GetFSKType(uint8_t fchigh, uint8_t fclow, uint8_t invert)
892{
893 char *fskType;
894 if (fchigh==10 && fclow==8){
895 if (invert) //fsk2a
896 fskType = "FSK2a";
897 else //fsk2
898 fskType = "FSK2";
899 } else if (fchigh == 8 && fclow == 5) {
900 if (invert)
901 fskType = "FSK1";
902 else
903 fskType = "FSK1a";
904 } else {
905 fskType = "FSK??";
906 }
907 return fskType;
908}
909
2fc2150e 910//by marshmellow
eb191de6 911//fsk raw demod and print binary
6de43508 912//takes 4 arguments - Clock, invert, fchigh, fclow
913//defaults: clock = 50, invert=1, fchigh=10, fclow=8 (RF/10 RF/8 (fsk2a))
4ac906d1 914int FSKrawDemod(const char *Cmd, bool verbose)
b3b70669 915{
e0165dcf 916 //raw fsk demod no manchester decoding no start bit finding just get binary from wave
917 //set defaults
918 int rfLen = 0;
919 int invert = 0;
920 int fchigh = 0;
921 int fclow = 0;
922
923 //set options from parameters entered with the command
924 sscanf(Cmd, "%i %i %i %i", &rfLen, &invert, &fchigh, &fclow);
925
926 if (strlen(Cmd)>0 && strlen(Cmd)<=2) {
927 if (rfLen==1){
2eec55c8 928 invert = 1; //if invert option only is used
e0165dcf 929 rfLen = 0;
930 }
931 }
932
933 uint8_t BitStream[MAX_GRAPH_TRACE_LEN]={0};
934 size_t BitLen = getFromGraphBuf(BitStream);
935 if (BitLen==0) return 0;
936 //get field clock lengths
937 uint16_t fcs=0;
e0165dcf 938 if (fchigh==0 || fclow == 0){
2eec55c8 939 fcs = countFC(BitStream, BitLen, 1);
e0165dcf 940 if (fcs==0){
941 fchigh=10;
942 fclow=8;
943 }else{
944 fchigh = (fcs >> 8) & 0xFF;
945 fclow = fcs & 0xFF;
946 }
947 }
948 //get bit clock length
949 if (rfLen==0){
950 rfLen = detectFSKClk(BitStream, BitLen, fchigh, fclow);
951 if (rfLen == 0) rfLen = 50;
952 }
e0165dcf 953 int size = fskdemod(BitStream,BitLen,(uint8_t)rfLen,(uint8_t)invert,(uint8_t)fchigh,(uint8_t)fclow);
954 if (size>0){
955 setDemodBuf(BitStream,size,0);
956
957 // Now output the bitstream to the scrollback by line of 16 bits
2767fc02 958 if (verbose || g_debugMode) {
959 PrintAndLog("\nUsing Clock:%d, invert:%d, fchigh:%d, fclow:%d", rfLen, invert, fchigh, fclow);
960 PrintAndLog("%s decoded bitstream:",GetFSKType(fchigh,fclow,invert));
961 printDemodBuff();
e0165dcf 962 }
963
964 return 1;
965 } else{
2767fc02 966 if (g_debugMode) PrintAndLog("no FSK data found");
e0165dcf 967 }
968 return 0;
b3b70669 969}
970
4ac906d1 971//by marshmellow
972//fsk raw demod and print binary
973//takes 4 arguments - Clock, invert, fchigh, fclow
974//defaults: clock = 50, invert=1, fchigh=10, fclow=8 (RF/10 RF/8 (fsk2a))
975int CmdFSKrawdemod(const char *Cmd)
976{
e0165dcf 977 char cmdp = param_getchar(Cmd, 0);
978 if (strlen(Cmd) > 10 || cmdp == 'h' || cmdp == 'H') {
979 PrintAndLog("Usage: data rawdemod fs [clock] <invert> [fchigh] [fclow]");
980 PrintAndLog(" [set clock as integer] optional, omit for autodetect.");
981 PrintAndLog(" <invert>, 1 for invert output, can be used even if the clock is omitted");
982 PrintAndLog(" [fchigh], larger field clock length, omit for autodetect");
983 PrintAndLog(" [fclow], small field clock length, omit for autodetect");
984 PrintAndLog("");
985 PrintAndLog(" sample: data rawdemod fs = demod an fsk tag from GraphBuffer using autodetect");
986 PrintAndLog(" : data rawdemod fs 32 = demod an fsk tag from GraphBuffer using a clock of RF/32, autodetect fc");
987 PrintAndLog(" : data rawdemod fs 1 = demod an fsk tag from GraphBuffer using autodetect, invert output");
988 PrintAndLog(" : data rawdemod fs 32 1 = demod an fsk tag from GraphBuffer using a clock of RF/32, invert output, autodetect fc");
989 PrintAndLog(" : data rawdemod fs 64 0 8 5 = demod an fsk1 RF/64 tag from GraphBuffer");
990 PrintAndLog(" : data rawdemod fs 50 0 10 8 = demod an fsk2 RF/50 tag from GraphBuffer");
991 PrintAndLog(" : data rawdemod fs 50 1 10 8 = demod an fsk2a RF/50 tag from GraphBuffer");
992 return 0;
993 }
994 return FSKrawDemod(Cmd, TRUE);
4ac906d1 995}
996
eb191de6 997//by marshmellow (based on existing demod + holiman's refactor)
998//HID Prox demod - FSK RF/50 with preamble of 00011101 (then manchester encoded)
999//print full HID Prox ID and some bit format details if found
b3b70669 1000int CmdFSKdemodHID(const char *Cmd)
1001{
e0165dcf 1002 //raw fsk demod no manchester decoding no start bit finding just get binary from wave
1003 uint32_t hi2=0, hi=0, lo=0;
1004
1005 uint8_t BitStream[MAX_GRAPH_TRACE_LEN]={0};
1006 size_t BitLen = getFromGraphBuf(BitStream);
1007 if (BitLen==0) return 0;
1008 //get binary from fsk wave
1009 int idx = HIDdemodFSK(BitStream,&BitLen,&hi2,&hi,&lo);
1010 if (idx<0){
1011 if (g_debugMode){
1012 if (idx==-1){
1013 PrintAndLog("DEBUG: Just Noise Detected");
1014 } else if (idx == -2) {
1015 PrintAndLog("DEBUG: Error demoding fsk");
1016 } else if (idx == -3) {
1017 PrintAndLog("DEBUG: Preamble not found");
1018 } else if (idx == -4) {
1019 PrintAndLog("DEBUG: Error in Manchester data, SIZE: %d", BitLen);
1020 } else {
1021 PrintAndLog("DEBUG: Error demoding fsk %d", idx);
1022 }
1023 }
1024 return 0;
1025 }
1026 if (hi2==0 && hi==0 && lo==0) {
1027 if (g_debugMode) PrintAndLog("DEBUG: Error - no values found");
1028 return 0;
1029 }
1030 if (hi2 != 0){ //extra large HID tags
1031 PrintAndLog("HID Prox TAG ID: %x%08x%08x (%d)",
1032 (unsigned int) hi2, (unsigned int) hi, (unsigned int) lo, (unsigned int) (lo>>1) & 0xFFFF);
1033 }
1034 else { //standard HID tags <38 bits
1035 uint8_t fmtLen = 0;
1036 uint32_t fc = 0;
1037 uint32_t cardnum = 0;
1038 if (((hi>>5)&1)==1){//if bit 38 is set then < 37 bit format is used
1039 uint32_t lo2=0;
1040 lo2=(((hi & 31) << 12) | (lo>>20)); //get bits 21-37 to check for format len bit
1041 uint8_t idx3 = 1;
1042 while(lo2>1){ //find last bit set to 1 (format len bit)
1043 lo2=lo2>>1;
1044 idx3++;
1045 }
1046 fmtLen =idx3+19;
1047 fc =0;
1048 cardnum=0;
1049 if(fmtLen==26){
1050 cardnum = (lo>>1)&0xFFFF;
1051 fc = (lo>>17)&0xFF;
1052 }
1053 if(fmtLen==34){
1054 cardnum = (lo>>1)&0xFFFF;
1055 fc= ((hi&1)<<15)|(lo>>17);
1056 }
1057 if(fmtLen==35){
1058 cardnum = (lo>>1)&0xFFFFF;
1059 fc = ((hi&1)<<11)|(lo>>21);
1060 }
1061 }
1062 else { //if bit 38 is not set then 37 bit format is used
1063 fmtLen = 37;
1064 fc = 0;
1065 cardnum = 0;
1066 if(fmtLen == 37){
1067 cardnum = (lo>>1)&0x7FFFF;
1068 fc = ((hi&0xF)<<12)|(lo>>20);
1069 }
1070 }
1071 PrintAndLog("HID Prox TAG ID: %x%08x (%d) - Format Len: %dbit - FC: %d - Card: %d",
1072 (unsigned int) hi, (unsigned int) lo, (unsigned int) (lo>>1) & 0xFFFF,
1073 (unsigned int) fmtLen, (unsigned int) fc, (unsigned int) cardnum);
1074 }
1075 setDemodBuf(BitStream,BitLen,idx);
1076 if (g_debugMode){
1077 PrintAndLog("DEBUG: idx: %d, Len: %d, Printing Demod Buffer:", idx, BitLen);
1078 printDemodBuff();
1079 }
1080 return 1;
ec75f5c1 1081}
1082
04d2721b 1083//by marshmellow
1084//Paradox Prox demod - FSK RF/50 with preamble of 00001111 (then manchester encoded)
ec75f5c1 1085//print full Paradox Prox ID and some bit format details if found
1086int CmdFSKdemodParadox(const char *Cmd)
1087{
e0165dcf 1088 //raw fsk demod no manchester decoding no start bit finding just get binary from wave
1089 uint32_t hi2=0, hi=0, lo=0;
1090
1091 uint8_t BitStream[MAX_GRAPH_TRACE_LEN]={0};
1092 size_t BitLen = getFromGraphBuf(BitStream);
1093 if (BitLen==0) return 0;
1094 //get binary from fsk wave
1095 int idx = ParadoxdemodFSK(BitStream,&BitLen,&hi2,&hi,&lo);
1096 if (idx<0){
1097 if (g_debugMode){
1098 if (idx==-1){
1099 PrintAndLog("DEBUG: Just Noise Detected");
1100 } else if (idx == -2) {
1101 PrintAndLog("DEBUG: Error demoding fsk");
1102 } else if (idx == -3) {
1103 PrintAndLog("DEBUG: Preamble not found");
1104 } else if (idx == -4) {
1105 PrintAndLog("DEBUG: Error in Manchester data");
1106 } else {
1107 PrintAndLog("DEBUG: Error demoding fsk %d", idx);
1108 }
1109 }
1110 return 0;
1111 }
1112 if (hi2==0 && hi==0 && lo==0){
1113 if (g_debugMode) PrintAndLog("DEBUG: Error - no value found");
1114 return 0;
1115 }
1116 uint32_t fc = ((hi & 0x3)<<6) | (lo>>26);
1117 uint32_t cardnum = (lo>>10)&0xFFFF;
1118 uint32_t rawLo = bytebits_to_byte(BitStream+idx+64,32);
1119 uint32_t rawHi = bytebits_to_byte(BitStream+idx+32,32);
1120 uint32_t rawHi2 = bytebits_to_byte(BitStream+idx,32);
1121
1122 PrintAndLog("Paradox TAG ID: %x%08x - FC: %d - Card: %d - Checksum: %02x - RAW: %08x%08x%08x",
1123 hi>>10, (hi & 0x3)<<26 | (lo>>10), fc, cardnum, (lo>>2) & 0xFF, rawHi2, rawHi, rawLo);
1124 setDemodBuf(BitStream,BitLen,idx);
1125 if (g_debugMode){
1126 PrintAndLog("DEBUG: idx: %d, len: %d, Printing Demod Buffer:", idx, BitLen);
1127 printDemodBuff();
1128 }
1129 return 1;
b3b70669 1130}
1131
2fc2150e 1132//by marshmellow
eb191de6 1133//IO-Prox demod - FSK RF/64 with preamble of 000000001
1134//print ioprox ID and some format details
b3b70669 1135int CmdFSKdemodIO(const char *Cmd)
1136{
e0165dcf 1137 //raw fsk demod no manchester decoding no start bit finding just get binary from wave
1138 //set defaults
1139 int idx=0;
1140 //something in graphbuffer?
1141 if (GraphTraceLen < 65) {
1142 if (g_debugMode)PrintAndLog("DEBUG: not enough samples in GraphBuffer");
1143 return 0;
1144 }
1145 uint8_t BitStream[MAX_GRAPH_TRACE_LEN]={0};
1146 size_t BitLen = getFromGraphBuf(BitStream);
1147 if (BitLen==0) return 0;
1148
1149 //get binary from fsk wave
1150 idx = IOdemodFSK(BitStream,BitLen);
1151 if (idx<0){
1152 if (g_debugMode){
1153 if (idx==-1){
1154 PrintAndLog("DEBUG: Just Noise Detected");
1155 } else if (idx == -2) {
1156 PrintAndLog("DEBUG: not enough samples");
1157 } else if (idx == -3) {
1158 PrintAndLog("DEBUG: error during fskdemod");
1159 } else if (idx == -4) {
1160 PrintAndLog("DEBUG: Preamble not found");
1161 } else if (idx == -5) {
1162 PrintAndLog("DEBUG: Separator bits not found");
1163 } else {
1164 PrintAndLog("DEBUG: Error demoding fsk %d", idx);
1165 }
1166 }
1167 return 0;
1168 }
1169 if (idx==0){
2767fc02 1170 if (g_debugMode){
e0165dcf 1171 PrintAndLog("DEBUG: IO Prox Data not found - FSK Bits: %d",BitLen);
2767fc02 1172 if (BitLen > 92) PrintAndLog("%s", sprint_bin_break(BitStream,92,16));
e0165dcf 1173 }
1174 return 0;
1175 }
1176 //Index map
1177 //0 10 20 30 40 50 60
1178 //| | | | | | |
1179 //01234567 8 90123456 7 89012345 6 78901234 5 67890123 4 56789012 3 45678901 23
1180 //-----------------------------------------------------------------------------
1181 //00000000 0 11110000 1 facility 1 version* 1 code*one 1 code*two 1 ???????? 11
1182 //
1183 //XSF(version)facility:codeone+codetwo (raw)
1184 //Handle the data
1185 if (idx+64>BitLen) {
2767fc02 1186 if (g_debugMode) PrintAndLog("not enough bits found - bitlen: %d",BitLen);
e0165dcf 1187 return 0;
1188 }
1189 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]);
1190 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]);
1191 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]);
1192 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]);
1193 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]);
1194 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]);
1195 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]);
1196
1197 uint32_t code = bytebits_to_byte(BitStream+idx,32);
1198 uint32_t code2 = bytebits_to_byte(BitStream+idx+32,32);
1199 uint8_t version = bytebits_to_byte(BitStream+idx+27,8); //14,4
1200 uint8_t facilitycode = bytebits_to_byte(BitStream+idx+18,8) ;
1201 uint16_t number = (bytebits_to_byte(BitStream+idx+36,8)<<8)|(bytebits_to_byte(BitStream+idx+45,8)); //36,9
1202 uint8_t crc = bytebits_to_byte(BitStream+idx+54,8);
1203 uint16_t calccrc = 0;
1204
1205 for (uint8_t i=1; i<6; ++i){
1206 calccrc += bytebits_to_byte(BitStream+idx+9*i,8);
e0165dcf 1207 }
1208 calccrc &= 0xff;
1209 calccrc = 0xff - calccrc;
1210
1211 char *crcStr = (crc == calccrc) ? "crc ok": "!crc";
1212
1213 PrintAndLog("IO Prox XSF(%02d)%02x:%05d (%08x%08x) [%02x %s]",version,facilitycode,number,code,code2, crc, crcStr);
1214 setDemodBuf(BitStream,64,idx);
1215 if (g_debugMode){
1216 PrintAndLog("DEBUG: idx: %d, Len: %d, Printing demod buffer:",idx,64);
1217 printDemodBuff();
1218 }
1219 return 1;
b3b70669 1220}
1e090a61 1221
1e090a61 1222//by marshmellow
1223//AWID Prox demod - FSK RF/50 with preamble of 00000001 (always a 96 bit data stream)
1224//print full AWID Prox ID and some bit format details if found
1225int CmdFSKdemodAWID(const char *Cmd)
1226{
1227
e0165dcf 1228 //int verbose=1;
1229 //sscanf(Cmd, "%i", &verbose);
1230
1231 //raw fsk demod no manchester decoding no start bit finding just get binary from wave
1232 uint8_t BitStream[MAX_GRAPH_TRACE_LEN]={0};
1233 size_t size = getFromGraphBuf(BitStream);
1234 if (size==0) return 0;
1235
1236 //get binary from fsk wave
1237 int idx = AWIDdemodFSK(BitStream, &size);
1238 if (idx<=0){
1239 if (g_debugMode==1){
1240 if (idx == -1)
1241 PrintAndLog("DEBUG: Error - not enough samples");
1242 else if (idx == -2)
1243 PrintAndLog("DEBUG: Error - only noise found");
1244 else if (idx == -3)
1245 PrintAndLog("DEBUG: Error - problem during FSK demod");
1246 else if (idx == -4)
1247 PrintAndLog("DEBUG: Error - AWID preamble not found");
1248 else if (idx == -5)
1249 PrintAndLog("DEBUG: Error - Size not correct: %d", size);
1250 else
1251 PrintAndLog("DEBUG: Error %d",idx);
1252 }
1253 return 0;
1254 }
1255
1256 // Index map
1257 // 0 10 20 30 40 50 60
1258 // | | | | | | |
1259 // 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
1260 // -----------------------------------------------------------------------------
1261 // 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
1262 // 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
1263 // |---26 bit---| |-----117----||-------------142-------------|
1264 // b = format bit len, o = odd parity of last 3 bits
1265 // f = facility code, c = card number
1266 // w = wiegand parity
1267 // (26 bit format shown)
1e090a61 1268
e0165dcf 1269 //get raw ID before removing parities
1270 uint32_t rawLo = bytebits_to_byte(BitStream+idx+64,32);
1271 uint32_t rawHi = bytebits_to_byte(BitStream+idx+32,32);
1272 uint32_t rawHi2 = bytebits_to_byte(BitStream+idx,32);
1273 setDemodBuf(BitStream,96,idx);
1274
1275 size = removeParity(BitStream, idx+8, 4, 1, 88);
1276 if (size != 66){
1277 if (g_debugMode==1) PrintAndLog("DEBUG: Error - at parity check-tag size does not match AWID format");
1278 return 0;
1279 }
1280 // ok valid card found!
1281
1282 // Index map
1283 // 0 10 20 30 40 50 60
1284 // | | | | | | |
1285 // 01234567 8 90123456 7890123456789012 3 456789012345678901234567890123456
1286 // -----------------------------------------------------------------------------
1287 // 00011010 1 01110101 0000000010001110 1 000000000000000000000000000000000
1288 // bbbbbbbb w ffffffff cccccccccccccccc w xxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxx
1289 // |26 bit| |-117--| |-----142------|
1290 // b = format bit len, o = odd parity of last 3 bits
1291 // f = facility code, c = card number
1292 // w = wiegand parity
1293 // (26 bit format shown)
1294
1295 uint32_t fc = 0;
1296 uint32_t cardnum = 0;
1297 uint32_t code1 = 0;
1298 uint32_t code2 = 0;
1299 uint8_t fmtLen = bytebits_to_byte(BitStream,8);
1300 if (fmtLen==26){
1301 fc = bytebits_to_byte(BitStream+9, 8);
1302 cardnum = bytebits_to_byte(BitStream+17, 16);
1303 code1 = bytebits_to_byte(BitStream+8,fmtLen);
1304 PrintAndLog("AWID Found - BitLength: %d, FC: %d, Card: %d - Wiegand: %x, Raw: %08x%08x%08x", fmtLen, fc, cardnum, code1, rawHi2, rawHi, rawLo);
1305 } else {
1306 cardnum = bytebits_to_byte(BitStream+8+(fmtLen-17), 16);
1307 if (fmtLen>32){
1308 code1 = bytebits_to_byte(BitStream+8,fmtLen-32);
1309 code2 = bytebits_to_byte(BitStream+8+(fmtLen-32),32);
1310 PrintAndLog("AWID Found - BitLength: %d -unknown BitLength- (%d) - Wiegand: %x%08x, Raw: %08x%08x%08x", fmtLen, cardnum, code1, code2, rawHi2, rawHi, rawLo);
1311 } else{
1312 code1 = bytebits_to_byte(BitStream+8,fmtLen);
1313 PrintAndLog("AWID Found - BitLength: %d -unknown BitLength- (%d) - Wiegand: %x, Raw: %08x%08x%08x", fmtLen, cardnum, code1, rawHi2, rawHi, rawLo);
1314 }
1315 }
1316 if (g_debugMode){
1317 PrintAndLog("DEBUG: idx: %d, Len: %d Printing Demod Buffer:", idx, 96);
1318 printDemodBuff();
1319 }
1320 //todo - convert hi2, hi, lo to demodbuffer for future sim/clone commands
1321 return 1;
1e090a61 1322}
1323
1324//by marshmellow
1325//Pyramid Prox demod - FSK RF/50 with preamble of 0000000000000001 (always a 128 bit data stream)
1326//print full Farpointe Data/Pyramid Prox ID and some bit format details if found
1327int CmdFSKdemodPyramid(const char *Cmd)
1328{
e0165dcf 1329 //raw fsk demod no manchester decoding no start bit finding just get binary from wave
1330 uint8_t BitStream[MAX_GRAPH_TRACE_LEN]={0};
1331 size_t size = getFromGraphBuf(BitStream);
1332 if (size==0) return 0;
1333
1334 //get binary from fsk wave
1335 int idx = PyramiddemodFSK(BitStream, &size);
1336 if (idx < 0){
1337 if (g_debugMode==1){
1338 if (idx == -5)
1339 PrintAndLog("DEBUG: Error - not enough samples");
1340 else if (idx == -1)
1341 PrintAndLog("DEBUG: Error - only noise found");
1342 else if (idx == -2)
1343 PrintAndLog("DEBUG: Error - problem during FSK demod");
1344 else if (idx == -3)
1345 PrintAndLog("DEBUG: Error - Size not correct: %d", size);
1346 else if (idx == -4)
1347 PrintAndLog("DEBUG: Error - Pyramid preamble not found");
1348 else
1349 PrintAndLog("DEBUG: Error - idx: %d",idx);
1350 }
1351 return 0;
1352 }
1353 // Index map
1354 // 0 10 20 30 40 50 60
1355 // | | | | | | |
1356 // 0123456 7 8901234 5 6789012 3 4567890 1 2345678 9 0123456 7 8901234 5 6789012 3
1357 // -----------------------------------------------------------------------------
1358 // 0000000 0 0000000 1 0000000 1 0000000 1 0000000 1 0000000 1 0000000 1 0000000 1
1359 // premable xxxxxxx o xxxxxxx o xxxxxxx o xxxxxxx o xxxxxxx o xxxxxxx o xxxxxxx o
1360
1361 // 64 70 80 90 100 110 120
1362 // | | | | | | |
1363 // 4567890 1 2345678 9 0123456 7 8901234 5 6789012 3 4567890 1 2345678 9 0123456 7
1364 // -----------------------------------------------------------------------------
1365 // 0000000 1 0000000 1 0000000 1 0110111 0 0011000 1 0000001 0 0001100 1 1001010 0
1366 // xxxxxxx o xxxxxxx o xxxxxxx o xswffff o ffffccc o ccccccc o ccccccw o ppppppp o
1367 // |---115---||---------71---------|
1368 // s = format start bit, o = odd parity of last 7 bits
1369 // f = facility code, c = card number
1370 // w = wiegand parity, x = extra space for other formats
1371 // p = unknown checksum
1372 // (26 bit format shown)
1373
1374 //get bytes for checksum calc
1375 uint8_t checksum = bytebits_to_byte(BitStream + idx + 120, 8);
1376 uint8_t csBuff[14] = {0x00};
1377 for (uint8_t i = 0; i < 13; i++){
1378 csBuff[i] = bytebits_to_byte(BitStream + idx + 16 + (i*8), 8);
1379 }
1380 //check checksum calc
1381 //checksum calc thanks to ICEMAN!!
1382 uint32_t checkCS = CRC8Maxim(csBuff,13);
1383
1384 //get raw ID before removing parities
1385 uint32_t rawLo = bytebits_to_byte(BitStream+idx+96,32);
1386 uint32_t rawHi = bytebits_to_byte(BitStream+idx+64,32);
1387 uint32_t rawHi2 = bytebits_to_byte(BitStream+idx+32,32);
1388 uint32_t rawHi3 = bytebits_to_byte(BitStream+idx,32);
1389 setDemodBuf(BitStream,128,idx);
1390
1391 size = removeParity(BitStream, idx+8, 8, 1, 120);
1392 if (size != 105){
1393 if (g_debugMode==1)
1394 PrintAndLog("DEBUG: Error at parity check - tag size does not match Pyramid format, SIZE: %d, IDX: %d, hi3: %x",size, idx, rawHi3);
1395 return 0;
1396 }
1397
1398 // ok valid card found!
1399
1400 // Index map
1401 // 0 10 20 30 40 50 60 70
1402 // | | | | | | | |
1403 // 01234567890123456789012345678901234567890123456789012345678901234567890
1404 // -----------------------------------------------------------------------
1405 // 00000000000000000000000000000000000000000000000000000000000000000000000
1406 // xxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxx
1407
1408 // 71 80 90 100
1409 // | | | |
1410 // 1 2 34567890 1234567890123456 7 8901234
1411 // ---------------------------------------
1412 // 1 1 01110011 0000000001000110 0 1001010
1413 // s w ffffffff cccccccccccccccc w ppppppp
1414 // |--115-| |------71------|
1415 // s = format start bit, o = odd parity of last 7 bits
1416 // f = facility code, c = card number
1417 // w = wiegand parity, x = extra space for other formats
1418 // p = unknown checksum
1419 // (26 bit format shown)
1420
1421 //find start bit to get fmtLen
1422 int j;
1423 for (j=0; j<size; j++){
1424 if(BitStream[j]) break;
1425 }
1426 uint8_t fmtLen = size-j-8;
1427 uint32_t fc = 0;
1428 uint32_t cardnum = 0;
1429 uint32_t code1 = 0;
1430 //uint32_t code2 = 0;
1431 if (fmtLen==26){
1432 fc = bytebits_to_byte(BitStream+73, 8);
1433 cardnum = bytebits_to_byte(BitStream+81, 16);
1434 code1 = bytebits_to_byte(BitStream+72,fmtLen);
1435 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);
1436 } else if (fmtLen==45){
1437 fmtLen=42; //end = 10 bits not 7 like 26 bit fmt
1438 fc = bytebits_to_byte(BitStream+53, 10);
1439 cardnum = bytebits_to_byte(BitStream+63, 32);
1440 PrintAndLog("Pyramid ID Found - BitLength: %d, FC: %d, Card: %d - Raw: %08x%08x%08x%08x", fmtLen, fc, cardnum, rawHi3, rawHi2, rawHi, rawLo);
1441 } else {
1442 cardnum = bytebits_to_byte(BitStream+81, 16);
1443 if (fmtLen>32){
1444 //code1 = bytebits_to_byte(BitStream+(size-fmtLen),fmtLen-32);
1445 //code2 = bytebits_to_byte(BitStream+(size-32),32);
1446 PrintAndLog("Pyramid ID Found - BitLength: %d -unknown BitLength- (%d), Raw: %08x%08x%08x%08x", fmtLen, cardnum, rawHi3, rawHi2, rawHi, rawLo);
1447 } else{
1448 //code1 = bytebits_to_byte(BitStream+(size-fmtLen),fmtLen);
1449 PrintAndLog("Pyramid ID Found - BitLength: %d -unknown BitLength- (%d), Raw: %08x%08x%08x%08x", fmtLen, cardnum, rawHi3, rawHi2, rawHi, rawLo);
1450 }
1451 }
1452 if (checksum == checkCS)
1453 PrintAndLog("Checksum %02x passed", checksum);
1454 else
1455 PrintAndLog("Checksum %02x failed - should have been %02x", checksum, checkCS);
1456
1457 if (g_debugMode){
1458 PrintAndLog("DEBUG: idx: %d, Len: %d, Printing Demod Buffer:", idx, 128);
1459 printDemodBuff();
1460 }
1461 return 1;
1e090a61 1462}
1463
ad6219fc 1464// FDX-B ISO11784/85 demod (aka animal tag) BIPHASE, inverted, rf/32, with preamble of 00000000001 (128bits)
7f96433c 1465// 8 databits + 1 parity (1)
0df669a2 1466// CIITT 16 chksum
1467// NATIONAL CODE, ICAR database
ad6219fc 1468// COUNTRY CODE (ISO3166) or http://cms.abvma.ca/uploads/ManufacturersISOsandCountryCodes.pdf
0df669a2 1469// FLAG (animal/non-animal)
22a6a62f 1470/*
147138 IDbits
147210 country code
14731 extra app bit
147414 reserved bits
14751 animal bit
147616 ccitt CRC chksum over 64bit ID CODE.
147724 appli bits.
1478
ad6219fc 1479-- sample: 985121004515220 [ 37FF65B88EF94 ]
22a6a62f 1480*/
ad6219fc 1481int CmdFDXBdemodBI(const char *Cmd){
7f96433c 1482
1483 int invert = 1;
1484 int clk = 32;
1485 int errCnt = 0;
ad6219fc 1486 int maxErr = 0;
7f96433c 1487 uint8_t BitStream[MAX_DEMOD_BUF_LEN];
1488 size_t size = getFromGraphBuf(BitStream);
1489
ad6219fc 1490 errCnt = askdemod(BitStream, &size, &clk, &invert, maxErr, 0, 0);
1491 if ( errCnt < 0 || errCnt > maxErr ) {
a71ece51 1492 if (g_debugMode) PrintAndLog("DEBUG: no data or error found %d, clock: %d", errCnt, clk);
0df669a2 1493 return 0;
1494 }
615f21dd 1495
ad6219fc 1496 errCnt = BiphaseRawDecode(BitStream, &size, maxErr, 1);
1497 if (errCnt < 0 || errCnt > maxErr ) {
7f96433c 1498 if (g_debugMode) PrintAndLog("Error BiphaseRawDecode: %d", errCnt);
0df669a2 1499 return 0;
7f96433c 1500 }
0df669a2 1501
ad6219fc 1502 int preambleIndex = FDXBdemodBI(BitStream, &size);
7f96433c 1503 if (preambleIndex < 0){
ad6219fc 1504 if (g_debugMode) PrintAndLog("Error FDXBDemod , no startmarker found :: %d",preambleIndex);
7f96433c 1505 return 0;
1506 }
0df669a2 1507
ad6219fc 1508 setDemodBuf(BitStream, 128, preambleIndex);
7f96433c 1509
a71ece51 1510 // remove but don't verify parity. (pType = 2)
1511 size = removeParity(BitStream, preambleIndex + 11, 9, 2, 117);
ad6219fc 1512 if ( size <= 103 ) {
1513 if (g_debugMode) PrintAndLog("Error removeParity:: %d", size);
1514 return 0;
0df669a2 1515 }
ad6219fc 1516 if (g_debugMode) {
1517 char *bin = sprint_bin_break(BitStream,size,16);
1518 PrintAndLog("DEBUG BinStream:\n%s",bin);
1519 }
1520 PrintAndLog("\nFDX-B / ISO 11784/5 Animal Tag ID Found:");
a71ece51 1521 if (g_debugMode) PrintAndLog("Start marker %d; Size %d", preambleIndex, size);
ad6219fc 1522
a71ece51 1523 //got a good demod
ad6219fc 1524 uint64_t NationalCode = ((uint64_t)(bytebits_to_byteLSBF(BitStream+32,6)) << 32) | bytebits_to_byteLSBF(BitStream,32);
1525 uint32_t countryCode = bytebits_to_byteLSBF(BitStream+38,10);
1526 uint8_t dataBlockBit = BitStream[48];
1527 uint32_t reservedCode = bytebits_to_byteLSBF(BitStream+49,14);
1528 uint8_t animalBit = BitStream[63];
a71ece51 1529 uint32_t crc16 = bytebits_to_byteLSBF(BitStream+64,16);
ad6219fc 1530 uint32_t extended = bytebits_to_byteLSBF(BitStream+80,24);
1531
a71ece51 1532 uint64_t rawid = ((uint64_t)bytebits_to_byte(BitStream,32)<<32) | bytebits_to_byte(BitStream+32,32);
ad6219fc 1533 uint8_t raw[8];
1534 num_to_bytes(rawid, 8, raw);
a71ece51 1535
1536 if (g_debugMode) PrintAndLog("Raw ID Hex: %s", sprint_hex(raw,8));
1537
1538 uint16_t calcCrc = crc16_ccitt_kermit(raw, 8);
1539 PrintAndLog("Animal ID: %04u-%012llu", countryCode, NationalCode);
ad6219fc 1540 PrintAndLog("National Code: %012llu", NationalCode);
a71ece51 1541 PrintAndLog("CountryCode: %04u", countryCode);
ad6219fc 1542 PrintAndLog("Extended Data: %s", dataBlockBit ? "True" : "False");
1543 PrintAndLog("reserved Code: %u", reservedCode);
1544 PrintAndLog("Animal Tag: %s", animalBit ? "True" : "False");
a71ece51 1545 PrintAndLog("CRC: 0x%04X - [%04X] - %s", crc16, calcCrc, (calcCrc == crc16) ? "Passed" : "Failed");
1546 PrintAndLog("Extended: 0x%X\n", extended);
ad6219fc 1547
615f21dd 1548 return 1;
1549}
1550
1551
e770c648 1552//by marshmellow
1553//attempt to psk1 demod graph buffer
4ac906d1 1554int PSKDemod(const char *Cmd, bool verbose)
e770c648 1555{
e0165dcf 1556 int invert=0;
1557 int clk=0;
1558 int maxErr=100;
1559 sscanf(Cmd, "%i %i %i", &clk, &invert, &maxErr);
1560 if (clk==1){
1561 invert=1;
1562 clk=0;
1563 }
1564 if (invert != 0 && invert != 1) {
1565 if (verbose) PrintAndLog("Invalid argument: %s", Cmd);
1566 return 0;
1567 }
1568 uint8_t BitStream[MAX_GRAPH_TRACE_LEN]={0};
1569 size_t BitLen = getFromGraphBuf(BitStream);
1570 if (BitLen==0) return -1;
2eec55c8 1571 uint8_t carrier=countFC(BitStream, BitLen, 0);
e0165dcf 1572 if (carrier!=2 && carrier!=4 && carrier!=8){
1573 //invalid carrier
1574 return 0;
1575 }
1576 int errCnt=0;
1577 errCnt = pskRawDemod(BitStream, &BitLen, &clk, &invert);
1578 if (errCnt > maxErr){
2767fc02 1579 if (g_debugMode || verbose) PrintAndLog("Too many errors found, clk: %d, invert: %d, numbits: %d, errCnt: %d",clk,invert,BitLen,errCnt);
e0165dcf 1580 return 0;
1581 }
1582 if (errCnt<0|| BitLen<16){ //throw away static - allow 1 and -1 (in case of threshold command first)
2767fc02 1583 if (g_debugMode || verbose) PrintAndLog("no data found, clk: %d, invert: %d, numbits: %d, errCnt: %d",clk,invert,BitLen,errCnt);
e0165dcf 1584 return 0;
1585 }
2767fc02 1586 if (verbose || g_debugMode){
1587 PrintAndLog("\nUsing Clock:%d, invert:%d, Bits Found:%d",clk,invert,BitLen);
e0165dcf 1588 if (errCnt>0){
2767fc02 1589 PrintAndLog("# Errors during Demoding (shown as 7 in bit stream): %d",errCnt);
e0165dcf 1590 }
1591 }
1592 //prime demod buffer for output
1593 setDemodBuf(BitStream,BitLen,0);
1594 return 1;
4118b74d 1595}
e770c648 1596
4118b74d 1597// Indala 26 bit decode
1598// by marshmellow
1599// optional arguments - same as CmdpskNRZrawDemod (clock & invert)
1600int CmdIndalaDecode(const char *Cmd)
1601{
b4fb11ba 1602 int ans;
1603 if (strlen(Cmd)>0){
1604 ans = PSKDemod(Cmd, 0);
1605 } else{ //default to RF/32
1606 ans = PSKDemod("32", 0);
1607 }
4118b74d 1608
7a8a982b 1609 if (!ans){
ec75f5c1 1610 if (g_debugMode==1)
b4fb11ba 1611 PrintAndLog("Error1: %d",ans);
ba1a299c 1612 return 0;
1613 }
1614 uint8_t invert=0;
2b3af97d 1615 ans = indala26decode(DemodBuffer, &DemodBufferLen, &invert);
ba1a299c 1616 if (ans < 1) {
ec75f5c1 1617 if (g_debugMode==1)
b4fb11ba 1618 PrintAndLog("Error2: %d",ans);
ba1a299c 1619 return -1;
1620 }
a1d17964 1621 char showbits[251]={0x00};
84871873 1622 if (invert)
b4fb11ba 1623 if (g_debugMode==1)
e0165dcf 1624 PrintAndLog("Had to invert bits");
ec75f5c1 1625
ba1a299c 1626 //convert UID to HEX
1627 uint32_t uid1, uid2, uid3, uid4, uid5, uid6, uid7;
1628 int idx;
1629 uid1=0;
1630 uid2=0;
1631 PrintAndLog("BitLen: %d",DemodBufferLen);
1632 if (DemodBufferLen==64){
1633 for( idx=0; idx<64; idx++) {
1634 uid1=(uid1<<1)|(uid2>>31);
1635 if (DemodBuffer[idx] == 0) {
1636 uid2=(uid2<<1)|0;
1637 showbits[idx]='0';
1638 } else {
1639 uid2=(uid2<<1)|1;
1640 showbits[idx]='1';
1641 }
1642 }
1643 showbits[idx]='\0';
1644 PrintAndLog("Indala UID=%s (%x%08x)", showbits, uid1, uid2);
1645 }
1646 else {
1647 uid3=0;
1648 uid4=0;
1649 uid5=0;
1650 uid6=0;
1651 uid7=0;
1652 for( idx=0; idx<DemodBufferLen; idx++) {
1653 uid1=(uid1<<1)|(uid2>>31);
1654 uid2=(uid2<<1)|(uid3>>31);
1655 uid3=(uid3<<1)|(uid4>>31);
1656 uid4=(uid4<<1)|(uid5>>31);
1657 uid5=(uid5<<1)|(uid6>>31);
1658 uid6=(uid6<<1)|(uid7>>31);
1659 if (DemodBuffer[idx] == 0) {
1660 uid7=(uid7<<1)|0;
1661 showbits[idx]='0';
1662 }
1663 else {
1664 uid7=(uid7<<1)|1;
1665 showbits[idx]='1';
1666 }
1667 }
1668 showbits[idx]='\0';
1669 PrintAndLog("Indala UID=%s (%x%08x%08x%08x%08x%08x%08x)", showbits, uid1, uid2, uid3, uid4, uid5, uid6, uid7);
1670 }
b4fb11ba 1671 if (g_debugMode){
1672 PrintAndLog("DEBUG: printing demodbuffer:");
1673 printDemodBuff();
1674 }
ba1a299c 1675 return 1;
4118b74d 1676}
1677
411105e0 1678int CmdPSKNexWatch(const char *Cmd)
1679{
1680 if (!PSKDemod("", false)) return 0;
1681 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};
1682 size_t startIdx = 0, size = DemodBufferLen;
1683 bool invert = false;
1684 if (!preambleSearch(DemodBuffer, preamble, sizeof(preamble), &size, &startIdx)){
1685 // if didn't find preamble try again inverting
1686 if (!PSKDemod("1", false)) return 0;
1687 size = DemodBufferLen;
1688 if (!preambleSearch(DemodBuffer, preamble, sizeof(preamble), &size, &startIdx)) return 0;
1689 invert = true;
1690 }
1691 if (size != 128) return 0;
1692 setDemodBuf(DemodBuffer, size, startIdx+4);
1693 startIdx = 8+32; //4 = extra i added, 8 = preamble, 32 = reserved bits (always 0)
1694 //get ID
1695 uint32_t ID = 0;
1696 for (uint8_t wordIdx=0; wordIdx<4; wordIdx++){
1697 for (uint8_t idx=0; idx<8; idx++){
1698 ID = (ID << 1) | DemodBuffer[startIdx+wordIdx+(idx*4)];
1699 }
1700 }
1701 //parity check (TBD)
1702
1703 //checksum check (TBD)
1704
1705 //output
1706 PrintAndLog("NexWatch ID: %d", ID);
1707 if (invert){
1708 PrintAndLog("Had to Invert - probably NexKey");
1709 for (uint8_t idx=0; idx<size; idx++)
1710 DemodBuffer[idx] ^= 1;
1711 }
1712
1713 CmdPrintDemodBuff("x");
1714 return 1;
1715}
1716
04d2721b 1717// by marshmellow
e770c648 1718// takes 3 arguments - clock, invert, maxErr as integers
1719// attempts to demodulate nrz only
1720// prints binary found and saves in demodbuffer for further commands
b4a2fcf6 1721int NRZrawDemod(const char *Cmd, bool verbose)
e770c648 1722{
e0165dcf 1723 int invert=0;
1724 int clk=0;
1725 int maxErr=100;
1726 sscanf(Cmd, "%i %i %i", &clk, &invert, &maxErr);
1727 if (clk==1){
1728 invert=1;
1729 clk=0;
1730 }
1731 if (invert != 0 && invert != 1) {
1732 PrintAndLog("Invalid argument: %s", Cmd);
1733 return 0;
1734 }
1735 uint8_t BitStream[MAX_GRAPH_TRACE_LEN]={0};
1736 size_t BitLen = getFromGraphBuf(BitStream);
1737 if (BitLen==0) return 0;
1738 int errCnt=0;
1739 errCnt = nrzRawDemod(BitStream, &BitLen, &clk, &invert, maxErr);
1740 if (errCnt > maxErr){
1741 if (g_debugMode) PrintAndLog("Too many errors found, clk: %d, invert: %d, numbits: %d, errCnt: %d",clk,invert,BitLen,errCnt);
1742 return 0;
1743 }
2eec55c8 1744 if (errCnt<0 || BitLen<16){ //throw away static - allow 1 and -1 (in case of threshold command first)
e0165dcf 1745 if (g_debugMode) PrintAndLog("no data found, clk: %d, invert: %d, numbits: %d, errCnt: %d",clk,invert,BitLen,errCnt);
1746 return 0;
1747 }
1748 if (verbose || g_debugMode) PrintAndLog("Tried NRZ Demod using Clock: %d - invert: %d - Bits Found: %d",clk,invert,BitLen);
1749 //prime demod buffer for output
1750 setDemodBuf(BitStream,BitLen,0);
1751
2767fc02 1752 if (errCnt>0 && (verbose || g_debugMode)) PrintAndLog("# Errors during Demoding (shown as 7 in bit stream): %d",errCnt);
e0165dcf 1753 if (verbose || g_debugMode) {
1754 PrintAndLog("NRZ demoded bitstream:");
1755 // Now output the bitstream to the scrollback by line of 16 bits
1756 printDemodBuff();
1757 }
1758 return 1;
b4a2fcf6 1759}
1760
1761int CmdNRZrawDemod(const char *Cmd)
1762{
e0165dcf 1763 char cmdp = param_getchar(Cmd, 0);
1764 if (strlen(Cmd) > 10 || cmdp == 'h' || cmdp == 'H') {
1765 PrintAndLog("Usage: data rawdemod nr [clock] <0|1> [maxError]");
1766 PrintAndLog(" [set clock as integer] optional, if not set, autodetect.");
1767 PrintAndLog(" <invert>, 1 for invert output");
1768 PrintAndLog(" [set maximum allowed errors], default = 100.");
1769 PrintAndLog("");
1770 PrintAndLog(" sample: data rawdemod nr = demod a nrz/direct tag from GraphBuffer");
1771 PrintAndLog(" : data rawdemod nr 32 = demod a nrz/direct tag from GraphBuffer using a clock of RF/32");
1772 PrintAndLog(" : data rawdemod nr 32 1 = demod a nrz/direct tag from GraphBuffer using a clock of RF/32 and inverting data");
1773 PrintAndLog(" : data rawdemod nr 1 = demod a nrz/direct tag from GraphBuffer while inverting data");
1774 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");
1775 return 0;
1776 }
1777 return NRZrawDemod(Cmd, TRUE);
e770c648 1778}
1779
1780// by marshmellow
1781// takes 3 arguments - clock, invert, maxErr as integers
04d2721b 1782// attempts to demodulate psk only
1783// prints binary found and saves in demodbuffer for further commands
e770c648 1784int CmdPSK1rawDemod(const char *Cmd)
4118b74d 1785{
e0165dcf 1786 int ans;
1787 char cmdp = param_getchar(Cmd, 0);
1788 if (strlen(Cmd) > 10 || cmdp == 'h' || cmdp == 'H') {
1789 PrintAndLog("Usage: data rawdemod p1 [clock] <0|1> [maxError]");
1790 PrintAndLog(" [set clock as integer] optional, if not set, autodetect.");
1791 PrintAndLog(" <invert>, 1 for invert output");
1792 PrintAndLog(" [set maximum allowed errors], default = 100.");
1793 PrintAndLog("");
1794 PrintAndLog(" sample: data rawdemod p1 = demod a psk1 tag from GraphBuffer");
1795 PrintAndLog(" : data rawdemod p1 32 = demod a psk1 tag from GraphBuffer using a clock of RF/32");
1796 PrintAndLog(" : data rawdemod p1 32 1 = demod a psk1 tag from GraphBuffer using a clock of RF/32 and inverting data");
1797 PrintAndLog(" : data rawdemod p1 1 = demod a psk1 tag from GraphBuffer while inverting data");
1798 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");
1799 return 0;
1800 }
1801 ans = PSKDemod(Cmd, TRUE);
1802 //output
1803 if (!ans){
1804 if (g_debugMode) PrintAndLog("Error demoding: %d",ans);
1805 return 0;
1806 }
7a8a982b 1807
2767fc02 1808 PrintAndLog("PSK1 demoded bitstream:");
e0165dcf 1809 // Now output the bitstream to the scrollback by line of 16 bits
1810 printDemodBuff();
1811 return 1;
4118b74d 1812}
1813
04d2721b 1814// by marshmellow
19ff0210 1815// takes same args as cmdpsk1rawdemod
04d2721b 1816int CmdPSK2rawDemod(const char *Cmd)
1817{
e0165dcf 1818 int ans=0;
1819 char cmdp = param_getchar(Cmd, 0);
1820 if (strlen(Cmd) > 10 || cmdp == 'h' || cmdp == 'H') {
1821 PrintAndLog("Usage: data rawdemod p2 [clock] <0|1> [maxError]");
1822 PrintAndLog(" [set clock as integer] optional, if not set, autodetect.");
1823 PrintAndLog(" <invert>, 1 for invert output");
1824 PrintAndLog(" [set maximum allowed errors], default = 100.");
1825 PrintAndLog("");
1826 PrintAndLog(" sample: data rawdemod p2 = demod a psk2 tag from GraphBuffer, autodetect clock");
1827 PrintAndLog(" : data rawdemod p2 32 = demod a psk2 tag from GraphBuffer using a clock of RF/32");
1828 PrintAndLog(" : data rawdemod p2 32 1 = demod a psk2 tag from GraphBuffer using a clock of RF/32 and inverting output");
1829 PrintAndLog(" : data rawdemod p2 1 = demod a psk2 tag from GraphBuffer, autodetect clock and invert output");
1830 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");
1831 return 0;
1832 }
1833 ans=PSKDemod(Cmd, TRUE);
1834 if (!ans){
1835 if (g_debugMode) PrintAndLog("Error demoding: %d",ans);
1836 return 0;
1837 }
1838 psk1TOpsk2(DemodBuffer, DemodBufferLen);
1839 PrintAndLog("PSK2 demoded bitstream:");
1840 // Now output the bitstream to the scrollback by line of 16 bits
1841 printDemodBuff();
1842 return 1;
04d2721b 1843}
1844
19ff0210 1845// by marshmellow - combines all raw demod functions into one menu command
1846int CmdRawDemod(const char *Cmd)
1847{
1848 char cmdp = Cmd[0]; //param_getchar(Cmd, 0);
1849
23f0a7d8 1850 if (strlen(Cmd) > 20 || cmdp == 'h' || cmdp == 'H' || strlen(Cmd)<2) {
19ff0210 1851 PrintAndLog("Usage: data rawdemod [modulation] <help>|<options>");
b41534d1 1852 PrintAndLog(" [modulation] as 2 char, 'ab' for ask/biphase, 'am' for ask/manchester, 'ar' for ask/raw, 'fs' for fsk, ...");
1853 PrintAndLog(" 'nr' for nrz/direct, 'p1' for psk1, 'p2' for psk2");
19ff0210 1854 PrintAndLog(" <help> as 'h', prints the help for the specific modulation");
1855 PrintAndLog(" <options> see specific modulation help for optional parameters");
1856 PrintAndLog("");
1fbf8956 1857 PrintAndLog(" sample: data rawdemod fs h = print help specific to fsk demod");
19ff0210 1858 PrintAndLog(" : data rawdemod fs = demod GraphBuffer using: fsk - autodetect");
b41534d1 1859 PrintAndLog(" : data rawdemod ab = demod GraphBuffer using: ask/biphase - autodetect");
19ff0210 1860 PrintAndLog(" : data rawdemod am = demod GraphBuffer using: ask/manchester - autodetect");
1861 PrintAndLog(" : data rawdemod ar = demod GraphBuffer using: ask/raw - autodetect");
1862 PrintAndLog(" : data rawdemod nr = demod GraphBuffer using: nrz/direct - autodetect");
1863 PrintAndLog(" : data rawdemod p1 = demod GraphBuffer using: psk1 - autodetect");
1864 PrintAndLog(" : data rawdemod p2 = demod GraphBuffer using: psk2 - autodetect");
1865 return 0;
1866 }
1867 char cmdp2 = Cmd[1];
1868 int ans = 0;
1869 if (cmdp == 'f' && cmdp2 == 's'){
f8f894a5 1870 ans = CmdFSKrawdemod(Cmd+2);
b41534d1 1871 } else if(cmdp == 'a' && cmdp2 == 'b'){
f8f894a5 1872 ans = Cmdaskbiphdemod(Cmd+2);
19ff0210 1873 } else if(cmdp == 'a' && cmdp2 == 'm'){
f8f894a5 1874 ans = Cmdaskmandemod(Cmd+2);
19ff0210 1875 } else if(cmdp == 'a' && cmdp2 == 'r'){
f8f894a5 1876 ans = Cmdaskrawdemod(Cmd+2);
19ff0210 1877 } else if(cmdp == 'n' && cmdp2 == 'r'){
f8f894a5 1878 ans = CmdNRZrawDemod(Cmd+2);
19ff0210 1879 } else if(cmdp == 'p' && cmdp2 == '1'){
f8f894a5 1880 ans = CmdPSK1rawDemod(Cmd+2);
19ff0210 1881 } else if(cmdp == 'p' && cmdp2 == '2'){
f8f894a5 1882 ans = CmdPSK2rawDemod(Cmd+2);
19ff0210 1883 } else {
1884 PrintAndLog("unknown modulation entered - see help ('h') for parameter structure");
1885 }
1886 return ans;
1887}
1888
7fe9b0b7 1889int CmdGrid(const char *Cmd)
1890{
e0165dcf 1891 sscanf(Cmd, "%i %i", &PlotGridX, &PlotGridY);
1892 PlotGridXdefault= PlotGridX;
1893 PlotGridYdefault= PlotGridY;
1894 RepaintGraphWindow();
1895 return 0;
7fe9b0b7 1896}
1897
1898int CmdHexsamples(const char *Cmd)
1899{
e0165dcf 1900 int i, j;
1901 int requested = 0;
1902 int offset = 0;
1903 char string_buf[25];
1904 char* string_ptr = string_buf;
1905 uint8_t got[BIGBUF_SIZE];
1906
1907 sscanf(Cmd, "%i %i", &requested, &offset);
1908
1909 /* if no args send something */
1910 if (requested == 0) {
1911 requested = 8;
1912 }
1913 if (offset + requested > sizeof(got)) {
1914 PrintAndLog("Tried to read past end of buffer, <bytes> + <offset> > %d", BIGBUF_SIZE);
1915 return 0;
1916 }
1917
1918 GetFromBigBuf(got,requested,offset);
1919 WaitForResponse(CMD_ACK,NULL);
1920
1921 i = 0;
1922 for (j = 0; j < requested; j++) {
1923 i++;
1924 string_ptr += sprintf(string_ptr, "%02x ", got[j]);
1925 if (i == 8) {
1926 *(string_ptr - 1) = '\0'; // remove the trailing space
1927 PrintAndLog("%s", string_buf);
1928 string_buf[0] = '\0';
1929 string_ptr = string_buf;
1930 i = 0;
1931 }
1932 if (j == requested - 1 && string_buf[0] != '\0') { // print any remaining bytes
1933 *(string_ptr - 1) = '\0';
1934 PrintAndLog("%s", string_buf);
1935 string_buf[0] = '\0';
1936 }
1937 }
1938 return 0;
7fe9b0b7 1939}
1940
7fe9b0b7 1941int CmdHide(const char *Cmd)
1942{
e0165dcf 1943 HideGraphWindow();
1944 return 0;
7fe9b0b7 1945}
1946
78f5b1a7 1947//zero mean GraphBuffer
7fe9b0b7 1948int CmdHpf(const char *Cmd)
1949{
e0165dcf 1950 int i;
1951 int accum = 0;
7fe9b0b7 1952
e0165dcf 1953 for (i = 10; i < GraphTraceLen; ++i)
1954 accum += GraphBuffer[i];
1955 accum /= (GraphTraceLen - 10);
1956 for (i = 0; i < GraphTraceLen; ++i)
1957 GraphBuffer[i] -= accum;
7fe9b0b7 1958
e0165dcf 1959 RepaintGraphWindow();
1960 return 0;
7fe9b0b7 1961}
f6d9fb17
MHS		 1962typedef struct {
1963 uint8_t * buffer;
1964 uint32_t numbits;
1965 uint32_t position;
ad6219fc 1966} BitstreamOut;
f6d9fb17
MHS		 1967
1968bool _headBit( BitstreamOut *stream)
1969{
1970 int bytepos = stream->position >> 3; // divide by 8
1971 int bitpos = (stream->position++) & 7; // mask out 00000111
1972 return (*(stream->buffer + bytepos) >> (7-bitpos)) & 1;
1973}
1974
1975uint8_t getByte(uint8_t bits_per_sample, BitstreamOut* b)
1976{
1977 int i;
1978 uint8_t val = 0;
1979 for(i =0 ; i < bits_per_sample; i++)
1980 {
1981 val |= (_headBit(b) << (7-i));
1982 }
1983 return val;
1984}
7fe9b0b7 1985
1fbf8956 1986int getSamples(const char *Cmd, bool silent)
7fe9b0b7 1987{
e0165dcf 1988 //If we get all but the last byte in bigbuf,
1989 // we don't have to worry about remaining trash
1990 // in the last byte in case the bits-per-sample
1991 // does not line up on byte boundaries
1992
1993 uint8_t got[BIGBUF_SIZE-1] = { 0 };
1994
1995 int n = strtol(Cmd, NULL, 0);
1996
1997 if (n == 0)
1998 n = sizeof(got);
1999
2000 if (n > sizeof(got))
2001 n = sizeof(got);
2002
2003 PrintAndLog("Reading %d bytes from device memory\n", n);
2004 GetFromBigBuf(got,n,0);
2005 PrintAndLog("Data fetched");
2006 UsbCommand response;
2007 WaitForResponse(CMD_ACK, &response);
2008 uint8_t bits_per_sample = 8;
2009
2010 //Old devices without this feature would send 0 at arg[0]
2011 if(response.arg[0] > 0)
2012 {
2013 sample_config *sc = (sample_config *) response.d.asBytes;
2014 PrintAndLog("Samples @ %d bits/smpl, decimation 1:%d ", sc->bits_per_sample
2015 , sc->decimation);
2016 bits_per_sample = sc->bits_per_sample;
2017 }
2018 if(bits_per_sample < 8)
2019 {
2020 PrintAndLog("Unpacking...");
2021 BitstreamOut bout = { got, bits_per_sample * n, 0};
2022 int j =0;
e6432f05 2023 for (j = 0; j * bits_per_sample < n * 8 && j < n; j++) {
e0165dcf 2024 uint8_t sample = getByte(bits_per_sample, &bout);
2025 GraphBuffer[j] = ((int) sample )- 128;
2026 }
2027 GraphTraceLen = j;
2028 PrintAndLog("Unpacked %d samples" , j );
2029 }else
2030 {
2031 for (int j = 0; j < n; j++) {
2032 GraphBuffer[j] = ((int)got[j]) - 128;
2033 }
2034 GraphTraceLen = n;
2035 }
2036
2037 RepaintGraphWindow();
2038 return 0;
1fbf8956 2039}
2040
2041int CmdSamples(const char *Cmd)
2042{
e0165dcf 2043 return getSamples(Cmd, false);
7fe9b0b7 2044}
2045
d6a120a2
MHS		 2046int CmdTuneSamples(const char *Cmd)
2047{
3aa4014b 2048 int timeout = 0;
2049 printf("\nMeasuring antenna characteristics, please wait...");
ba1a299c 2050
3aa4014b 2051 UsbCommand c = {CMD_MEASURE_ANTENNA_TUNING};
2052 SendCommand(&c);
2053
2054 UsbCommand resp;
2055 while(!WaitForResponseTimeout(CMD_MEASURED_ANTENNA_TUNING,&resp,1000)) {
2056 timeout++;
2057 printf(".");
2058 if (timeout > 7) {
2059 PrintAndLog("\nNo response from Proxmark. Aborting...");
2060 return 1;
2061 }
2062 }
2063
2064 int peakv, peakf;
2065 int vLf125, vLf134, vHf;
2066 vLf125 = resp.arg[0] & 0xffff;
2067 vLf134 = resp.arg[0] >> 16;
2068 vHf = resp.arg[1] & 0xffff;;
2069 peakf = resp.arg[2] & 0xffff;
2070 peakv = resp.arg[2] >> 16;
2071 PrintAndLog("");
2072 PrintAndLog("# LF antenna: %5.2f V @ 125.00 kHz", vLf125/1000.0);
2073 PrintAndLog("# LF antenna: %5.2f V @ 134.00 kHz", vLf134/1000.0);
2074 PrintAndLog("# LF optimal: %5.2f V @%9.2f kHz", peakv/1000.0, 12000.0/(peakf+1));
2075 PrintAndLog("# HF antenna: %5.2f V @ 13.56 MHz", vHf/1000.0);
0d0d0499 2076
2767fc02 2077 #define LF_UNUSABLE_V 2948 // was 2000. Changed due to bugfix in voltage measurements. LF results are now 47% higher.
2078 #define LF_MARGINAL_V 14739 // was 10000. Changed due to bugfix bug in voltage measurements. LF results are now 47% higher.
2079 #define HF_UNUSABLE_V 3167 // was 2000. Changed due to bugfix in voltage measurements. HF results are now 58% higher.
2080 #define HF_MARGINAL_V 7917 // was 5000. Changed due to bugfix in voltage measurements. HF results are now 58% higher.
0d0d0499 2081
2082 if (peakv < LF_UNUSABLE_V)
3aa4014b 2083 PrintAndLog("# Your LF antenna is unusable.");
0d0d0499 2084 else if (peakv < LF_MARGINAL_V)
3aa4014b 2085 PrintAndLog("# Your LF antenna is marginal.");
0d0d0499 2086 if (vHf < HF_UNUSABLE_V)
3aa4014b 2087 PrintAndLog("# Your HF antenna is unusable.");
0d0d0499 2088 else if (vHf < HF_MARGINAL_V)
3aa4014b 2089 PrintAndLog("# Your HF antenna is marginal.");
2090
0d0d0499 2091 if (peakv >= LF_UNUSABLE_V) {
2092 for (int i = 0; i < 256; i++) {
2093 GraphBuffer[i] = resp.d.asBytes[i] - 128;
2094 }
2095 PrintAndLog("Displaying LF tuning graph. Divisor 89 is 134khz, 95 is 125khz.\n");
2096 PrintAndLog("\n");
2097 GraphTraceLen = 256;
2098 ShowGraphWindow();
abd16c45 2099 RepaintGraphWindow();
ba1a299c 2100 }
2101
b4fb11ba 2102 return 0;
d6a120a2
MHS		 2103}
2104
3aa4014b 2105
7fe9b0b7 2106int CmdLoad(const char *Cmd)
2107{
e0165dcf 2108 char filename[FILE_PATH_SIZE] = {0x00};
2109 int len = 0;
b915fda3 2110
e0165dcf 2111 len = strlen(Cmd);
2112 if (len > FILE_PATH_SIZE) len = FILE_PATH_SIZE;
2113 memcpy(filename, Cmd, len);
b915fda3 2114
e0165dcf 2115 FILE *f = fopen(filename, "r");
2116 if (!f) {
2117 PrintAndLog("couldn't open '%s'", filename);
2118 return 0;
2119 }
2120
2121 GraphTraceLen = 0;
2122 char line[80];
2123 while (fgets(line, sizeof (line), f)) {
2124 GraphBuffer[GraphTraceLen] = atoi(line);
2125 GraphTraceLen++;
2126 }
2127 fclose(f);
2128 PrintAndLog("loaded %d samples", GraphTraceLen);
2129 RepaintGraphWindow();
2130 return 0;
7fe9b0b7 2131}
2132
2133int CmdLtrim(const char *Cmd)
2134{
e0165dcf 2135 int ds = atoi(Cmd);
cc15a118 2136 if (GraphTraceLen<=0) return 0;
e0165dcf 2137 for (int i = ds; i < GraphTraceLen; ++i)
2138 GraphBuffer[i-ds] = GraphBuffer[i];
2139 GraphTraceLen -= ds;
7fe9b0b7 2140
e0165dcf 2141 RepaintGraphWindow();
2142 return 0;
7fe9b0b7 2143}
ec75f5c1 2144
2145// trim graph to input argument length
9ec1416a 2146int CmdRtrim(const char *Cmd)
2147{
e0165dcf 2148 int ds = atoi(Cmd);
9ec1416a 2149
e0165dcf 2150 GraphTraceLen = ds;
9ec1416a 2151
e0165dcf 2152 RepaintGraphWindow();
2153 return 0;
9ec1416a 2154}
7fe9b0b7 2155
7fe9b0b7 2156int CmdNorm(const char *Cmd)
2157{
e0165dcf 2158 int i;
2159 int max = INT_MIN, min = INT_MAX;
7fe9b0b7 2160
e0165dcf 2161 for (i = 10; i < GraphTraceLen; ++i) {
2162 if (GraphBuffer[i] > max)
2163 max = GraphBuffer[i];
2164 if (GraphBuffer[i] < min)
2165 min = GraphBuffer[i];
2166 }
7fe9b0b7 2167
e0165dcf 2168 if (max != min) {
2169 for (i = 0; i < GraphTraceLen; ++i) {
ba1a299c 2170 GraphBuffer[i] = (GraphBuffer[i] - ((max + min) / 2)) * 256 /
e0165dcf 2171 (max - min);
ba1a299c 2172 //marshmelow: adjusted *1000 to *256 to make +/- 128 so demod commands still work
e0165dcf 2173 }
2174 }
2175 RepaintGraphWindow();
2176 return 0;
7fe9b0b7 2177}
2178
2179int CmdPlot(const char *Cmd)
2180{
e0165dcf 2181 ShowGraphWindow();
2182 return 0;
7fe9b0b7 2183}
2184
2185int CmdSave(const char *Cmd)
2186{
e0165dcf 2187 char filename[FILE_PATH_SIZE] = {0x00};
2188 int len = 0;
b915fda3 2189
e0165dcf 2190 len = strlen(Cmd);
2191 if (len > FILE_PATH_SIZE) len = FILE_PATH_SIZE;
2192 memcpy(filename, Cmd, len);
2193
b915fda3 2194
e0165dcf 2195 FILE *f = fopen(filename, "w");
2196 if(!f) {
2197 PrintAndLog("couldn't open '%s'", filename);
2198 return 0;
2199 }
2200 int i;
2201 for (i = 0; i < GraphTraceLen; i++) {
2202 fprintf(f, "%d\n", GraphBuffer[i]);
2203 }
2204 fclose(f);
2205 PrintAndLog("saved to '%s'", Cmd);
2206 return 0;
7fe9b0b7 2207}
2208
2209int CmdScale(const char *Cmd)
2210{
e0165dcf 2211 CursorScaleFactor = atoi(Cmd);
2212 if (CursorScaleFactor == 0) {
2213 PrintAndLog("bad, can't have zero scale");
2214 CursorScaleFactor = 1;
2215 }
2216 RepaintGraphWindow();
2217 return 0;
7fe9b0b7 2218}
2219
d51b2eda
MHS		 2220int CmdDirectionalThreshold(const char *Cmd)
2221{
e0165dcf 2222 int8_t upThres = param_get8(Cmd, 0);
2223 int8_t downThres = param_get8(Cmd, 1);
2224
2225 printf("Applying Up Threshold: %d, Down Threshold: %d\n", upThres, downThres);
2226
2227 int lastValue = GraphBuffer[0];
2228 GraphBuffer[0] = 0; // Will be changed at the end, but init 0 as we adjust to last samples value if no threshold kicks in.
2229
2230 for (int i = 1; i < GraphTraceLen; ++i) {
2231 // Apply first threshold to samples heading up
2232 if (GraphBuffer[i] >= upThres && GraphBuffer[i] > lastValue)
2233 {
2234 lastValue = GraphBuffer[i]; // Buffer last value as we overwrite it.
2235 GraphBuffer[i] = 1;
2236 }
2237 // Apply second threshold to samples heading down
2238 else if (GraphBuffer[i] <= downThres && GraphBuffer[i] < lastValue)
2239 {
2240 lastValue = GraphBuffer[i]; // Buffer last value as we overwrite it.
2241 GraphBuffer[i] = -1;
2242 }
2243 else
2244 {
2245 lastValue = GraphBuffer[i]; // Buffer last value as we overwrite it.
2246 GraphBuffer[i] = GraphBuffer[i-1];
2247
2248 }
2249 }
2250 GraphBuffer[0] = GraphBuffer[1]; // Aline with first edited sample.
2251 RepaintGraphWindow();
2252 return 0;
d51b2eda
MHS		 2253}
2254
7fe9b0b7 2255int CmdZerocrossings(const char *Cmd)
2256{
e0165dcf 2257 // Zero-crossings aren't meaningful unless the signal is zero-mean.
2258 CmdHpf("");
2259
2260 int sign = 1;
2261 int zc = 0;
2262 int lastZc = 0;
2263
2264 for (int i = 0; i < GraphTraceLen; ++i) {
2265 if (GraphBuffer[i] * sign >= 0) {
2266 // No change in sign, reproduce the previous sample count.
2267 zc++;
2268 GraphBuffer[i] = lastZc;
2269 } else {
2270 // Change in sign, reset the sample count.
2271 sign = -sign;
2272 GraphBuffer[i] = lastZc;
2273 if (sign > 0) {
2274 lastZc = zc;
2275 zc = 0;
2276 }
2277 }
2278 }
2279
2280 RepaintGraphWindow();
2281 return 0;
7fe9b0b7 2282}
2283
ba1a299c 2284static command_t CommandTable[] =
7fe9b0b7 2285{
e0165dcf 2286 {"help", CmdHelp, 1, "This help"},
49bbc60a 2287 {"askedgedetect", CmdAskEdgeDetect, 1, "[threshold] Adjust Graph for manual ask demod using the length of sample differences to detect the edge of a wave (use 20-45, def:25)"},
e0165dcf 2288 {"askem410xdemod", CmdAskEM410xDemod, 1, "[clock] [invert<0|1>] [maxErr] -- Demodulate an EM410x tag from GraphBuffer (args optional)"},
2289 {"askgproxiidemod", CmdG_Prox_II_Demod, 1, "Demodulate a G Prox II tag from GraphBuffer"},
2290 {"autocorr", CmdAutoCorr, 1, "[window length] [g] -- Autocorrelation over window - g to save back to GraphBuffer (overwrite)"},
fef74fdc 2291 {"biphaserawdecode",CmdBiphaseDecodeRaw,1, "[offset] [invert<0|1>] [maxErr] -- Biphase decode bin stream in DemodBuffer (offset = 0|1 bits to shift the decode start)"},
e0165dcf 2292 {"bitsamples", CmdBitsamples, 0, "Get raw samples as bitstring"},
e0165dcf 2293 {"buffclear", CmdBuffClear, 1, "Clear sample buffer and graph window"},
2294 {"dec", CmdDec, 1, "Decimate samples"},
2295 {"detectclock", CmdDetectClockRate, 1, "[modulation] Detect clock rate of wave in GraphBuffer (options: 'a','f','n','p' for ask, fsk, nrz, psk respectively)"},
ad6219fc 2296 {"fdxbdemod", CmdFDXBdemodBI , 1, "Demodulate a FDX-B ISO11784/85 Biphase tag from GraphBuffer"},
e0165dcf 2297 {"fskawiddemod", CmdFSKdemodAWID, 1, "Demodulate an AWID FSK tag from GraphBuffer"},
2298 //{"fskfcdetect", CmdFSKfcDetect, 1, "Try to detect the Field Clock of an FSK wave"},
2299 {"fskhiddemod", CmdFSKdemodHID, 1, "Demodulate a HID FSK tag from GraphBuffer"},
2300 {"fskiodemod", CmdFSKdemodIO, 1, "Demodulate an IO Prox FSK tag from GraphBuffer"},
2301 {"fskpyramiddemod", CmdFSKdemodPyramid, 1, "Demodulate a Pyramid FSK tag from GraphBuffer"},
2302 {"fskparadoxdemod", CmdFSKdemodParadox, 1, "Demodulate a Paradox FSK tag from GraphBuffer"},
2303 {"getbitstream", CmdGetBitStream, 1, "Convert GraphBuffer's >=1 values to 1 and <1 to 0"},
2304 {"grid", CmdGrid, 1, "<x> <y> -- overlay grid on graph window, use zero value to turn off either"},
2305 {"hexsamples", CmdHexsamples, 0, "<bytes> [<offset>] -- Dump big buffer as hex bytes"},
2306 {"hide", CmdHide, 1, "Hide graph window"},
2307 {"hpf", CmdHpf, 1, "Remove DC offset from trace"},
2308 {"load", CmdLoad, 1, "<filename> -- Load trace (to graph window"},
2309 {"ltrim", CmdLtrim, 1, "<samples> -- Trim samples from left of trace"},
2310 {"rtrim", CmdRtrim, 1, "<location to end trace> -- Trim samples from right of trace"},
fef74fdc 2311 {"manrawdecode", Cmdmandecoderaw, 1, "[invert] [maxErr] -- Manchester decode binary stream in DemodBuffer"},
e0165dcf 2312 {"norm", CmdNorm, 1, "Normalize max/min to +/-128"},
2313 {"plot", CmdPlot, 1, "Show graph window (hit 'h' in window for keystroke help)"},
2d2f7d19 2314 {"printdemodbuffer",CmdPrintDemodBuff, 1, "[x] [o] <offset> -- print the data in the DemodBuffer - 'x' for hex output"},
e0165dcf 2315 {"pskindalademod", CmdIndalaDecode, 1, "[clock] [invert<0|1>] -- Demodulate an indala tag (PSK1) from GraphBuffer (args optional)"},
411105e0 2316 {"psknexwatchdemod",CmdPSKNexWatch, 1, "Demodulate a NexWatch tag (nexkey, quadrakey) (PSK1) from GraphBuffer"},
e0165dcf 2317 {"rawdemod", CmdRawDemod, 1, "[modulation] ... <options> -see help (h option) -- Demodulate the data in the GraphBuffer and output binary"},
2318 {"samples", CmdSamples, 0, "[512 - 40000] -- Get raw samples for graph window (GraphBuffer)"},
2319 {"save", CmdSave, 1, "<filename> -- Save trace (from graph window)"},
2320 {"scale", CmdScale, 1, "<int> -- Set cursor display scale"},
2321 {"setdebugmode", CmdSetDebugMode, 1, "<0|1> -- Turn on or off Debugging Mode for demods"},
2322 {"shiftgraphzero", CmdGraphShiftZero, 1, "<shift> -- Shift 0 for Graphed wave + or - shift value"},
e0165dcf 2323 {"dirthreshold", CmdDirectionalThreshold, 1, "<thres up> <thres down> -- Max rising higher up-thres/ Min falling lower down-thres, keep rest as prev."},
2324 {"tune", CmdTuneSamples, 0, "Get hw tune samples for graph window"},
2325 {"undec", CmdUndec, 1, "Un-decimate samples by 2"},
2326 {"zerocrossings", CmdZerocrossings, 1, "Count time between zero-crossings"},
2327 {NULL, NULL, 0, NULL}
7fe9b0b7 2328};
2329
2330int CmdData(const char *Cmd)
2331{
e0165dcf 2332 CmdsParse(CommandTable, Cmd);
2333 return 0;
7fe9b0b7 2334}
2335
2336int CmdHelp(const char *Cmd)
2337{
e0165dcf 2338 CmdsHelp(CommandTable);
2339 return 0;
7fe9b0b7 2340}
Proxmark3 GIT tracking
Impressum, Datenschutz