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1 | //----------------------------------------------------------------------------- | |
2 | // Copyright (C) 2010 iZsh <izsh at fail0verflow.com> | |
3 | // | |
4 | // This code is licensed to you under the terms of the GNU GPL, version 2 or, | |
5 | // at your option, any later version. See the LICENSE.txt file for the text of | |
6 | // the license. | |
7 | //----------------------------------------------------------------------------- | |
8 | // Data and Graph commands | |
9 | //----------------------------------------------------------------------------- | |
10 | ||
11 | #include <stdio.h> // also included in util.h | |
12 | #include <string.h> // also included in util.h | |
13 | #include <inttypes.h> | |
14 | #include <limits.h> // for CmdNorm INT_MIN && INT_MAX | |
15 | #include "data.h" // also included in util.h | |
16 | #include "cmddata.h" | |
17 | #include "util.h" | |
18 | #include "cmdmain.h" | |
19 | #include "proxmark3.h" | |
20 | #include "ui.h" // for show graph controls | |
21 | #include "graph.h" // for graph data | |
22 | #include "cmdparser.h"// already included in cmdmain.h | |
23 | #include "usb_cmd.h" // already included in cmdmain.h and proxmark3.h | |
24 | #include "lfdemod.h" // for demod code | |
25 | #include "crc.h" // for pyramid checksum maxim | |
26 | #include "crc16.h" // for FDXB demod checksum | |
27 | #include "loclass/cipherutils.h" // for decimating samples in getsamples | |
28 | #include "cmdlfem4x.h"// for em410x demod | |
29 | ||
30 | uint8_t DemodBuffer[MAX_DEMOD_BUF_LEN]; | |
31 | uint8_t g_debugMode=0; | |
32 | size_t DemodBufferLen=0; | |
33 | //size_t g_demodStartIdx=0; | |
34 | //uint8_t g_demodClock=0; | |
35 | ||
36 | static int CmdHelp(const char *Cmd); | |
37 | ||
38 | //set the demod buffer with given array of binary (one bit per byte) | |
39 | //by marshmellow | |
40 | void setDemodBuf(uint8_t *buff, size_t size, size_t startIdx) | |
41 | { | |
42 | if (buff == NULL) | |
43 | return; | |
44 | ||
45 | if ( size >= MAX_DEMOD_BUF_LEN) | |
46 | size = MAX_DEMOD_BUF_LEN; | |
47 | ||
48 | size_t i = 0; | |
49 | for (; i < size; i++){ | |
50 | DemodBuffer[i]=buff[startIdx++]; | |
51 | } | |
52 | DemodBufferLen=size; | |
53 | return; | |
54 | } | |
55 | ||
56 | int CmdSetDebugMode(const char *Cmd) | |
57 | { | |
58 | int demod=0; | |
59 | sscanf(Cmd, "%i", &demod); | |
60 | g_debugMode=(uint8_t)demod; | |
61 | return 1; | |
62 | } | |
63 | ||
64 | int usage_data_printdemodbuf(){ | |
65 | PrintAndLog("Usage: data printdemodbuffer x o <offset> l <length>"); | |
66 | PrintAndLog("Options: "); | |
67 | PrintAndLog(" h This help"); | |
68 | PrintAndLog(" x output in hex (omit for binary output)"); | |
69 | PrintAndLog(" o <offset> enter offset in # of bits"); | |
70 | PrintAndLog(" l <length> enter length to print in # of bits or hex characters respectively"); | |
71 | return 0; | |
72 | } | |
73 | ||
74 | //by marshmellow | |
75 | void printDemodBuff(void) | |
76 | { | |
77 | int bitLen = DemodBufferLen; | |
78 | if (bitLen<1) { | |
79 | PrintAndLog("no bits found in demod buffer"); | |
80 | return; | |
81 | } | |
82 | if (bitLen>512) bitLen=512; //max output to 512 bits if we have more - should be plenty | |
83 | ||
84 | char *bin = sprint_bin_break(DemodBuffer,bitLen,16); | |
85 | PrintAndLog("%s",bin); | |
86 | ||
87 | return; | |
88 | } | |
89 | ||
90 | int CmdPrintDemodBuff(const char *Cmd) | |
91 | { | |
92 | char hex[512]={0x00}; | |
93 | bool hexMode = false; | |
94 | bool errors = false; | |
95 | uint32_t offset = 0; //could be size_t but no param_get16... | |
96 | uint32_t length = 512; | |
97 | char cmdp = 0; | |
98 | while(param_getchar(Cmd, cmdp) != 0x00) | |
99 | { | |
100 | switch(param_getchar(Cmd, cmdp)) | |
101 | { | |
102 | case 'h': | |
103 | case 'H': | |
104 | return usage_data_printdemodbuf(); | |
105 | case 'x': | |
106 | case 'X': | |
107 | hexMode = true; | |
108 | cmdp++; | |
109 | break; | |
110 | case 'o': | |
111 | case 'O': | |
112 | offset = param_get32ex(Cmd, cmdp+1, 0, 10); | |
113 | if (!offset) errors = true; | |
114 | cmdp += 2; | |
115 | break; | |
116 | case 'l': | |
117 | case 'L': | |
118 | length = param_get32ex(Cmd, cmdp+1, 512, 10); | |
119 | if (!length) errors = true; | |
120 | cmdp += 2; | |
121 | break; | |
122 | default: | |
123 | PrintAndLog("Unknown parameter '%c'", param_getchar(Cmd, cmdp)); | |
124 | errors = true; | |
125 | break; | |
126 | } | |
127 | if(errors) break; | |
128 | } | |
129 | //Validations | |
130 | if(errors) return usage_data_printdemodbuf(); | |
131 | length = (length > (DemodBufferLen-offset)) ? DemodBufferLen-offset : length; | |
132 | int numBits = (length) & 0x00FFC; //make sure we don't exceed our string | |
133 | ||
134 | if (hexMode){ | |
135 | char *buf = (char *) (DemodBuffer + offset); | |
136 | numBits = (numBits > sizeof(hex)) ? sizeof(hex) : numBits; | |
137 | numBits = binarraytohex(hex, buf, numBits); | |
138 | if (numBits==0) return 0; | |
139 | PrintAndLog("DemodBuffer: %s",hex); | |
140 | } else { | |
141 | PrintAndLog("DemodBuffer:\n%s", sprint_bin_break(DemodBuffer+offset,numBits,16)); | |
142 | } | |
143 | return 1; | |
144 | } | |
145 | ||
146 | //by marshmellow | |
147 | //this function strictly converts >1 to 1 and <1 to 0 for each sample in the graphbuffer | |
148 | int CmdGetBitStream(const char *Cmd) | |
149 | { | |
150 | int i; | |
151 | CmdHpf(Cmd); | |
152 | for (i = 0; i < GraphTraceLen; i++) { | |
153 | if (GraphBuffer[i] >= 1) { | |
154 | GraphBuffer[i] = 1; | |
155 | } else { | |
156 | GraphBuffer[i] = 0; | |
157 | } | |
158 | } | |
159 | RepaintGraphWindow(); | |
160 | return 0; | |
161 | } | |
162 | ||
163 | //by marshmellow | |
164 | //Cmd Args: Clock, invert, maxErr, maxLen as integers and amplify as char == 'a' | |
165 | // (amp may not be needed anymore) | |
166 | //verbose will print results and demoding messages | |
167 | //emSearch will auto search for EM410x format in bitstream | |
168 | //askType switches decode: ask/raw = 0, ask/manchester = 1 | |
169 | int ASKDemod_ext(const char *Cmd, bool verbose, bool emSearch, uint8_t askType, bool *stCheck) { | |
170 | int invert=0; | |
171 | int clk=0; | |
172 | int maxErr=100; | |
173 | int maxLen=0; | |
174 | uint8_t askamp = 0; | |
175 | char amp = param_getchar(Cmd, 0); | |
176 | uint8_t BitStream[MAX_GRAPH_TRACE_LEN]={0}; | |
177 | sscanf(Cmd, "%i %i %i %i %c", &clk, &invert, &maxErr, &maxLen, &); | |
178 | if (!maxLen) maxLen = BIGBUF_SIZE; | |
179 | if (invert != 0 && invert != 1) { | |
180 | PrintAndLog("Invalid argument: %s", Cmd); | |
181 | return 0; | |
182 | } | |
183 | if (clk==1){ | |
184 | invert=1; | |
185 | clk=0; | |
186 | } | |
187 | size_t BitLen = getFromGraphBuf(BitStream); | |
188 | if (g_debugMode) PrintAndLog("DEBUG: Bitlen from grphbuff: %d",BitLen); | |
189 | if (BitLen < 255) return 0; | |
190 | if (maxLen < BitLen && maxLen != 0) BitLen = maxLen; | |
191 | int foundclk = 0; | |
192 | //amp before ST check | |
193 | if (amp == 'a' || amp == 'A') { | |
194 | askAmp(BitStream, BitLen); | |
195 | } | |
196 | bool st = false; | |
197 | size_t ststart = 0, stend = 0; | |
198 | if (*stCheck) st = DetectST_ext(BitStream, &BitLen, &foundclk, &ststart, &stend); | |
199 | if (st) { | |
200 | *stCheck = st; | |
201 | clk = (clk == 0) ? foundclk : clk; | |
202 | CursorCPos = ststart; | |
203 | CursorDPos = stend; | |
204 | if (verbose || g_debugMode) PrintAndLog("\nFound Sequence Terminator - First one is shown by orange and blue graph markers"); | |
205 | } | |
206 | int errCnt = askdemod(BitStream, &BitLen, &clk, &invert, maxErr, askamp, askType); | |
207 | if (errCnt<0 || BitLen<16){ //if fatal error (or -1) | |
208 | if (g_debugMode) PrintAndLog("DEBUG: no data found %d, errors:%d, bitlen:%d, clock:%d",errCnt,invert,BitLen,clk); | |
209 | return 0; | |
210 | } | |
211 | if (errCnt > maxErr){ | |
212 | if (g_debugMode) PrintAndLog("DEBUG: Too many errors found, errors:%d, bits:%d, clock:%d",errCnt, BitLen, clk); | |
213 | return 0; | |
214 | } | |
215 | if (verbose || g_debugMode) PrintAndLog("\nUsing Clock:%d, Invert:%d, Bits Found:%d",clk,invert,BitLen); | |
216 | ||
217 | //output | |
218 | setDemodBuf(BitStream,BitLen,0); | |
219 | if (verbose || g_debugMode){ | |
220 | if (errCnt>0) PrintAndLog("# Errors during Demoding (shown as 7 in bit stream): %d",errCnt); | |
221 | if (askType) PrintAndLog("ASK/Manchester - Clock: %d - Decoded bitstream:",clk); | |
222 | else PrintAndLog("ASK/Raw - Clock: %d - Decoded bitstream:",clk); | |
223 | // Now output the bitstream to the scrollback by line of 16 bits | |
224 | printDemodBuff(); | |
225 | ||
226 | } | |
227 | uint64_t lo = 0; | |
228 | uint32_t hi = 0; | |
229 | if (emSearch){ | |
230 | AskEm410xDecode(true, &hi, &lo); | |
231 | } | |
232 | return 1; | |
233 | } | |
234 | int ASKDemod(const char *Cmd, bool verbose, bool emSearch, uint8_t askType) { | |
235 | bool st = false; | |
236 | return ASKDemod_ext(Cmd, verbose, emSearch, askType, &st); | |
237 | } | |
238 | ||
239 | //by marshmellow | |
240 | //takes 5 arguments - clock, invert, maxErr, maxLen as integers and amplify as char == 'a' | |
241 | //attempts to demodulate ask while decoding manchester | |
242 | //prints binary found and saves in graphbuffer for further commands | |
243 | int Cmdaskmandemod(const char *Cmd) | |
244 | { | |
245 | char cmdp = param_getchar(Cmd, 0); | |
246 | if (strlen(Cmd) > 45 || cmdp == 'h' || cmdp == 'H') { | |
247 | PrintAndLog("Usage: data rawdemod am <s> [clock] <invert> [maxError] [maxLen] [amplify]"); | |
248 | PrintAndLog(" ['s'] optional, check for Sequence Terminator"); | |
249 | PrintAndLog(" [set clock as integer] optional, if not set, autodetect"); | |
250 | PrintAndLog(" <invert>, 1 to invert output"); | |
251 | PrintAndLog(" [set maximum allowed errors], default = 100"); | |
252 | PrintAndLog(" [set maximum Samples to read], default = 32768 (512 bits at rf/64)"); | |
253 | PrintAndLog(" <amplify>, 'a' to attempt demod with ask amplification, default = no amp"); | |
254 | PrintAndLog(""); | |
255 | PrintAndLog(" sample: data rawdemod am = demod an ask/manchester tag from GraphBuffer"); | |
256 | PrintAndLog(" : data rawdemod am 32 = demod an ask/manchester tag from GraphBuffer using a clock of RF/32"); | |
257 | PrintAndLog(" : data rawdemod am 32 1 = demod an ask/manchester tag from GraphBuffer using a clock of RF/32 and inverting data"); | |
258 | PrintAndLog(" : data rawdemod am 1 = demod an ask/manchester tag from GraphBuffer while inverting data"); | |
259 | 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"); | |
260 | return 0; | |
261 | } | |
262 | bool st = true; | |
263 | if (Cmd[0]=='s') | |
264 | return ASKDemod_ext(Cmd++, true, true, 1, &st); | |
265 | else if (Cmd[1] == 's') | |
266 | return ASKDemod_ext(Cmd+=2, true, true, 1, &st); | |
267 | else | |
268 | return ASKDemod(Cmd, true, true, 1); | |
269 | } | |
270 | ||
271 | //by marshmellow | |
272 | //manchester decode | |
273 | //stricktly take 10 and 01 and convert to 0 and 1 | |
274 | int Cmdmandecoderaw(const char *Cmd) | |
275 | { | |
276 | int i =0; | |
277 | int errCnt=0; | |
278 | size_t size=0; | |
279 | int invert=0; | |
280 | int maxErr = 20; | |
281 | char cmdp = param_getchar(Cmd, 0); | |
282 | if (strlen(Cmd) > 5 || cmdp == 'h' || cmdp == 'H') { | |
283 | PrintAndLog("Usage: data manrawdecode [invert] [maxErr]"); | |
284 | PrintAndLog(" Takes 10 and 01 and converts to 0 and 1 respectively"); | |
285 | PrintAndLog(" --must have binary sequence in demodbuffer (run data askrawdemod first)"); | |
286 | PrintAndLog(" [invert] invert output"); | |
287 | PrintAndLog(" [maxErr] set number of errors allowed (default = 20)"); | |
288 | PrintAndLog(""); | |
289 | PrintAndLog(" sample: data manrawdecode = decode manchester bitstream from the demodbuffer"); | |
290 | return 0; | |
291 | } | |
292 | if (DemodBufferLen==0) return 0; | |
293 | uint8_t BitStream[MAX_GRAPH_TRACE_LEN]={0}; | |
294 | int high=0,low=0; | |
295 | for (;i<DemodBufferLen;++i){ | |
296 | if (DemodBuffer[i]>high) high=DemodBuffer[i]; | |
297 | else if(DemodBuffer[i]<low) low=DemodBuffer[i]; | |
298 | BitStream[i]=DemodBuffer[i]; | |
299 | } | |
300 | if (high>7 || low <0 ){ | |
301 | PrintAndLog("Error: please raw demod the wave first then manchester raw decode"); | |
302 | return 0; | |
303 | } | |
304 | ||
305 | sscanf(Cmd, "%i %i", &invert, &maxErr); | |
306 | size=i; | |
307 | uint8_t alignPos = 0; | |
308 | errCnt=manrawdecode(BitStream, &size, invert, &alignPos); | |
309 | if (errCnt>=maxErr){ | |
310 | PrintAndLog("Too many errors: %d",errCnt); | |
311 | return 0; | |
312 | } | |
313 | PrintAndLog("Manchester Decoded - # errors:%d - data:",errCnt); | |
314 | PrintAndLog("%s", sprint_bin_break(BitStream, size, 16)); | |
315 | if (errCnt==0){ | |
316 | uint64_t id = 0; | |
317 | uint32_t hi = 0; | |
318 | size_t idx=0; | |
319 | if (Em410xDecode(BitStream, &size, &idx, &hi, &id)){ | |
320 | //need to adjust to set bitstream back to manchester encoded data | |
321 | //setDemodBuf(BitStream, size, idx); | |
322 | ||
323 | printEM410x(hi, id); | |
324 | } | |
325 | } | |
326 | return 1; | |
327 | } | |
328 | ||
329 | //by marshmellow | |
330 | //biphase decode | |
331 | //take 01 or 10 = 0 and 11 or 00 = 1 | |
332 | //takes 2 arguments "offset" default = 0 if 1 it will shift the decode by one bit | |
333 | // and "invert" default = 0 if 1 it will invert output | |
334 | // the argument offset allows us to manually shift if the output is incorrect - [EDIT: now auto detects] | |
335 | int CmdBiphaseDecodeRaw(const char *Cmd) | |
336 | { | |
337 | size_t size=0; | |
338 | int offset=0, invert=0, maxErr=20, errCnt=0; | |
339 | char cmdp = param_getchar(Cmd, 0); | |
340 | if (strlen(Cmd) > 3 || cmdp == 'h' || cmdp == 'H') { | |
341 | PrintAndLog("Usage: data biphaserawdecode [offset] [invert] [maxErr]"); | |
342 | PrintAndLog(" Converts 10 or 01 to 1 and 11 or 00 to 0"); | |
343 | PrintAndLog(" --must have binary sequence in demodbuffer (run data askrawdemod first)"); | |
344 | PrintAndLog(" --invert for Conditional Dephase Encoding (CDP) AKA Differential Manchester"); | |
345 | PrintAndLog(""); | |
346 | PrintAndLog(" [offset <0|1>], set to 0 not to adjust start position or to 1 to adjust decode start position"); | |
347 | PrintAndLog(" [invert <0|1>], set to 1 to invert output"); | |
348 | PrintAndLog(" [maxErr int], set max errors tolerated - default=20"); | |
349 | PrintAndLog(""); | |
350 | PrintAndLog(" sample: data biphaserawdecode = decode biphase bitstream from the demodbuffer"); | |
351 | PrintAndLog(" sample: data biphaserawdecode 1 1 = decode biphase bitstream from the demodbuffer, set offset, and invert output"); | |
352 | return 0; | |
353 | } | |
354 | sscanf(Cmd, "%i %i %i", &offset, &invert, &maxErr); | |
355 | if (DemodBufferLen==0){ | |
356 | PrintAndLog("DemodBuffer Empty - run 'data rawdemod ar' first"); | |
357 | return 0; | |
358 | } | |
359 | uint8_t BitStream[MAX_GRAPH_TRACE_LEN]={0}; | |
360 | memcpy(BitStream, DemodBuffer, DemodBufferLen); | |
361 | size = DemodBufferLen; | |
362 | errCnt=BiphaseRawDecode(BitStream, &size, offset, invert); | |
363 | if (errCnt<0){ | |
364 | PrintAndLog("Error during decode:%d", errCnt); | |
365 | return 0; | |
366 | } | |
367 | if (errCnt>maxErr){ | |
368 | PrintAndLog("Too many errors attempting to decode: %d",errCnt); | |
369 | return 0; | |
370 | } | |
371 | ||
372 | if (errCnt>0){ | |
373 | PrintAndLog("# Errors found during Demod (shown as 7 in bit stream): %d",errCnt); | |
374 | } | |
375 | PrintAndLog("Biphase Decoded using offset: %d - # invert:%d - data:",offset,invert); | |
376 | PrintAndLog("%s", sprint_bin_break(BitStream, size, 16)); | |
377 | ||
378 | if (offset) setDemodBuf(DemodBuffer,DemodBufferLen-offset, offset); //remove first bit from raw demod | |
379 | return 1; | |
380 | } | |
381 | ||
382 | //by marshmellow | |
383 | // - ASK Demod then Biphase decode GraphBuffer samples | |
384 | int ASKbiphaseDemod(const char *Cmd, bool verbose) | |
385 | { | |
386 | //ask raw demod GraphBuffer first | |
387 | int offset=0, clk=0, invert=0, maxErr=0; | |
388 | sscanf(Cmd, "%i %i %i %i", &offset, &clk, &invert, &maxErr); | |
389 | ||
390 | uint8_t BitStream[MAX_DEMOD_BUF_LEN]; | |
391 | size_t size = getFromGraphBuf(BitStream); | |
392 | //invert here inverts the ask raw demoded bits which has no effect on the demod, but we need the pointer | |
393 | int errCnt = askdemod(BitStream, &size, &clk, &invert, maxErr, 0, 0); | |
394 | if ( errCnt < 0 || errCnt > maxErr ) { | |
395 | if (g_debugMode) PrintAndLog("DEBUG: no data or error found %d, clock: %d", errCnt, clk); | |
396 | return 0; | |
397 | } | |
398 | ||
399 | //attempt to Biphase decode BitStream | |
400 | errCnt = BiphaseRawDecode(BitStream, &size, offset, invert); | |
401 | if (errCnt < 0){ | |
402 | if (g_debugMode || verbose) PrintAndLog("Error BiphaseRawDecode: %d", errCnt); | |
403 | return 0; | |
404 | } | |
405 | if (errCnt > maxErr) { | |
406 | if (g_debugMode || verbose) PrintAndLog("Error BiphaseRawDecode too many errors: %d", errCnt); | |
407 | return 0; | |
408 | } | |
409 | //success set DemodBuffer and return | |
410 | setDemodBuf(BitStream, size, 0); | |
411 | if (g_debugMode || verbose){ | |
412 | PrintAndLog("Biphase Decoded using offset: %d - clock: %d - # errors:%d - data:",offset,clk,errCnt); | |
413 | printDemodBuff(); | |
414 | } | |
415 | return 1; | |
416 | } | |
417 | //by marshmellow - see ASKbiphaseDemod | |
418 | int Cmdaskbiphdemod(const char *Cmd) | |
419 | { | |
420 | char cmdp = param_getchar(Cmd, 0); | |
421 | if (strlen(Cmd) > 25 || cmdp == 'h' || cmdp == 'H') { | |
422 | PrintAndLog("Usage: data rawdemod ab [offset] [clock] <invert> [maxError] [maxLen] <amplify>"); | |
423 | PrintAndLog(" [offset], offset to begin biphase, default=0"); | |
424 | PrintAndLog(" [set clock as integer] optional, if not set, autodetect"); | |
425 | PrintAndLog(" <invert>, 1 to invert output"); | |
426 | PrintAndLog(" [set maximum allowed errors], default = 100"); | |
427 | PrintAndLog(" [set maximum Samples to read], default = 32768 (512 bits at rf/64)"); | |
428 | PrintAndLog(" <amplify>, 'a' to attempt demod with ask amplification, default = no amp"); | |
429 | PrintAndLog(" NOTE: <invert> can be entered as second or third argument"); | |
430 | PrintAndLog(" NOTE: <amplify> can be entered as first, second or last argument"); | |
431 | PrintAndLog(" NOTE: any other arg must have previous args set to work"); | |
432 | PrintAndLog(""); | |
433 | PrintAndLog(" NOTE: --invert for Conditional Dephase Encoding (CDP) AKA Differential Manchester"); | |
434 | PrintAndLog(""); | |
435 | PrintAndLog(" sample: data rawdemod ab = demod an ask/biph tag from GraphBuffer"); | |
436 | PrintAndLog(" : data rawdemod ab 0 a = demod an ask/biph tag from GraphBuffer, amplified"); | |
437 | PrintAndLog(" : data rawdemod ab 1 32 = demod an ask/biph tag from GraphBuffer using an offset of 1 and a clock of RF/32"); | |
438 | PrintAndLog(" : data rawdemod ab 0 32 1 = demod an ask/biph tag from GraphBuffer using a clock of RF/32 and inverting data"); | |
439 | PrintAndLog(" : data rawdemod ab 0 1 = demod an ask/biph tag from GraphBuffer while inverting data"); | |
440 | 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"); | |
441 | 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"); | |
442 | return 0; | |
443 | } | |
444 | return ASKbiphaseDemod(Cmd, true); | |
445 | } | |
446 | ||
447 | //could be split to a gProxII file | |
448 | //by marshmellow | |
449 | //attempts to demodulate and identify a G_Prox_II verex/chubb card | |
450 | //WARNING: if it fails during some points it will destroy the DemodBuffer data | |
451 | // but will leave the GraphBuffer intact. | |
452 | //if successful it will push askraw data back to demod buffer ready for emulation | |
453 | int CmdG_Prox_II_Demod(const char *Cmd) | |
454 | { | |
455 | if (!ASKbiphaseDemod(Cmd, false)){ | |
456 | if (g_debugMode) PrintAndLog("Error gProxII: ASKbiphaseDemod failed 1st try"); | |
457 | return 0; | |
458 | } | |
459 | size_t size = DemodBufferLen; | |
460 | //call lfdemod.c demod for gProxII | |
461 | int ans = gProxII_Demod(DemodBuffer, &size); | |
462 | if (ans < 0){ | |
463 | if (g_debugMode) PrintAndLog("Error gProxII_Demod"); | |
464 | return 0; | |
465 | } | |
466 | //got a good demod of 96 bits | |
467 | uint8_t ByteStream[8] = {0x00}; | |
468 | uint8_t xorKey=0; | |
469 | size_t startIdx = ans + 6; //start after 6 bit preamble | |
470 | ||
471 | uint8_t bits_no_spacer[90]; | |
472 | //so as to not mess with raw DemodBuffer copy to a new sample array | |
473 | memcpy(bits_no_spacer, DemodBuffer + startIdx, 90); | |
474 | // remove the 18 (90/5=18) parity bits (down to 72 bits (96-6-18=72)) | |
475 | size_t bitLen = removeParity(bits_no_spacer, 0, 5, 3, 90); //source, startloc, paritylen, ptype, length_to_run | |
476 | if (bitLen != 72) { | |
477 | if (g_debugMode) PrintAndLog("Error gProxII: spacer removal did not produce 72 bits: %u, start: %u", bitLen, startIdx); | |
478 | return 0; | |
479 | } | |
480 | // get key and then get all 8 bytes of payload decoded | |
481 | xorKey = (uint8_t)bytebits_to_byteLSBF(bits_no_spacer, 8); | |
482 | for (size_t idx = 0; idx < 8; idx++) { | |
483 | ByteStream[idx] = ((uint8_t)bytebits_to_byteLSBF(bits_no_spacer+8 + (idx*8),8)) ^ xorKey; | |
484 | if (g_debugMode) PrintAndLog("byte %u after xor: %02x", (unsigned int)idx, ByteStream[idx]); | |
485 | } | |
486 | //now ByteStream contains 8 Bytes (64 bits) of decrypted raw tag data | |
487 | // | |
488 | uint8_t fmtLen = ByteStream[0]>>2; | |
489 | uint32_t FC = 0; | |
490 | uint32_t Card = 0; | |
491 | //get raw 96 bits to print | |
492 | uint32_t raw1 = bytebits_to_byte(DemodBuffer+ans,32); | |
493 | uint32_t raw2 = bytebits_to_byte(DemodBuffer+ans+32, 32); | |
494 | uint32_t raw3 = bytebits_to_byte(DemodBuffer+ans+64, 32); | |
495 | ||
496 | if (fmtLen==36){ | |
497 | FC = ((ByteStream[3] & 0x7F)<<7) | (ByteStream[4]>>1); | |
498 | Card = ((ByteStream[4]&1)<<19) | (ByteStream[5]<<11) | (ByteStream[6]<<3) | (ByteStream[7]>>5); | |
499 | PrintAndLog("G-Prox-II Found: FmtLen %d, FC %u, Card %u", (int)fmtLen, FC, Card); | |
500 | } else if(fmtLen==26){ | |
501 | FC = ((ByteStream[3] & 0x7F)<<1) | (ByteStream[4]>>7); | |
502 | Card = ((ByteStream[4]&0x7F)<<9) | (ByteStream[5]<<1) | (ByteStream[6]>>7); | |
503 | PrintAndLog("G-Prox-II Found: FmtLen %d, FC %u, Card %u", (int)fmtLen, FC, Card); | |
504 | } else { | |
505 | PrintAndLog("Unknown G-Prox-II Fmt Found: FmtLen %d",(int)fmtLen); | |
506 | PrintAndLog("Decoded Raw: %s", sprint_hex(ByteStream, 8)); | |
507 | } | |
508 | PrintAndLog("Raw: %08x%08x%08x", raw1,raw2,raw3); | |
509 | setDemodBuf(DemodBuffer+ans, 96, 0); | |
510 | return 1; | |
511 | } | |
512 | ||
513 | //could be moved to a viking file | |
514 | //by marshmellow | |
515 | //see ASKDemod for what args are accepted | |
516 | int CmdVikingDemod(const char *Cmd) | |
517 | { | |
518 | if (!ASKDemod(Cmd, false, false, 1)) { | |
519 | if (g_debugMode) PrintAndLog("ASKDemod failed"); | |
520 | return 0; | |
521 | } | |
522 | size_t size = DemodBufferLen; | |
523 | //call lfdemod.c demod for Viking | |
524 | int ans = VikingDemod_AM(DemodBuffer, &size); | |
525 | if (ans < 0) { | |
526 | if (g_debugMode) PrintAndLog("Error Viking_Demod %d", ans); | |
527 | return 0; | |
528 | } | |
529 | //got a good demod | |
530 | uint32_t raw1 = bytebits_to_byte(DemodBuffer+ans, 32); | |
531 | uint32_t raw2 = bytebits_to_byte(DemodBuffer+ans+32, 32); | |
532 | uint32_t cardid = bytebits_to_byte(DemodBuffer+ans+24, 32); | |
533 | uint8_t checksum = bytebits_to_byte(DemodBuffer+ans+32+24, 8); | |
534 | PrintAndLog("Viking Tag Found: Card ID %08X, Checksum: %02X", cardid, (unsigned int) checksum); | |
535 | PrintAndLog("Raw: %08X%08X", raw1,raw2); | |
536 | setDemodBuf(DemodBuffer+ans, 64, 0); | |
537 | return 1; | |
538 | } | |
539 | ||
540 | //by marshmellow - see ASKDemod | |
541 | int Cmdaskrawdemod(const char *Cmd) | |
542 | { | |
543 | char cmdp = param_getchar(Cmd, 0); | |
544 | if (strlen(Cmd) > 35 || cmdp == 'h' || cmdp == 'H') { | |
545 | PrintAndLog("Usage: data rawdemod ar [clock] <invert> [maxError] [maxLen] [amplify]"); | |
546 | PrintAndLog(" [set clock as integer] optional, if not set, autodetect"); | |
547 | PrintAndLog(" <invert>, 1 to invert output"); | |
548 | PrintAndLog(" [set maximum allowed errors], default = 100"); | |
549 | PrintAndLog(" [set maximum Samples to read], default = 32768 (1024 bits at rf/64)"); | |
550 | PrintAndLog(" <amplify>, 'a' to attempt demod with ask amplification, default = no amp"); | |
551 | PrintAndLog(""); | |
552 | PrintAndLog(" sample: data rawdemod ar = demod an ask tag from GraphBuffer"); | |
553 | PrintAndLog(" : data rawdemod ar a = demod an ask tag from GraphBuffer, amplified"); | |
554 | PrintAndLog(" : data rawdemod ar 32 = demod an ask tag from GraphBuffer using a clock of RF/32"); | |
555 | PrintAndLog(" : data rawdemod ar 32 1 = demod an ask tag from GraphBuffer using a clock of RF/32 and inverting data"); | |
556 | PrintAndLog(" : data rawdemod ar 1 = demod an ask tag from GraphBuffer while inverting data"); | |
557 | 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"); | |
558 | 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"); | |
559 | return 0; | |
560 | } | |
561 | return ASKDemod(Cmd, true, false, 0); | |
562 | } | |
563 | ||
564 | int AutoCorrelate(int window, bool SaveGrph, bool verbose) | |
565 | { | |
566 | static int CorrelBuffer[MAX_GRAPH_TRACE_LEN]; | |
567 | size_t Correlation = 0; | |
568 | int maxSum = 0; | |
569 | int lastMax = 0; | |
570 | if (verbose) PrintAndLog("performing %d correlations", GraphTraceLen - window); | |
571 | for (int i = 0; i < GraphTraceLen - window; ++i) { | |
572 | int sum = 0; | |
573 | for (int j = 0; j < window; ++j) { | |
574 | sum += (GraphBuffer[j]*GraphBuffer[i + j]) / 256; | |
575 | } | |
576 | CorrelBuffer[i] = sum; | |
577 | if (sum >= maxSum-100 && sum <= maxSum+100){ | |
578 | //another max | |
579 | Correlation = i-lastMax; | |
580 | lastMax = i; | |
581 | if (sum > maxSum) maxSum = sum; | |
582 | } else if (sum > maxSum){ | |
583 | maxSum=sum; | |
584 | lastMax = i; | |
585 | } | |
586 | } | |
587 | if (Correlation==0){ | |
588 | //try again with wider margin | |
589 | for (int i = 0; i < GraphTraceLen - window; i++){ | |
590 | if (CorrelBuffer[i] >= maxSum-(maxSum*0.05) && CorrelBuffer[i] <= maxSum+(maxSum*0.05)){ | |
591 | //another max | |
592 | Correlation = i-lastMax; | |
593 | lastMax = i; | |
594 | //if (CorrelBuffer[i] > maxSum) maxSum = sum; | |
595 | } | |
596 | } | |
597 | } | |
598 | if (verbose && Correlation > 0) PrintAndLog("Possible Correlation: %d samples",Correlation); | |
599 | ||
600 | if (SaveGrph){ | |
601 | GraphTraceLen = GraphTraceLen - window; | |
602 | memcpy(GraphBuffer, CorrelBuffer, GraphTraceLen * sizeof (int)); | |
603 | RepaintGraphWindow(); | |
604 | } | |
605 | return Correlation; | |
606 | } | |
607 | ||
608 | int usage_data_autocorr(void) | |
609 | { | |
610 | //print help | |
611 | PrintAndLog("Usage: data autocorr [window] [g]"); | |
612 | PrintAndLog("Options: "); | |
613 | PrintAndLog(" h This help"); | |
614 | PrintAndLog(" [window] window length for correlation - default = 4000"); | |
615 | PrintAndLog(" g save back to GraphBuffer (overwrite)"); | |
616 | return 0; | |
617 | } | |
618 | ||
619 | int CmdAutoCorr(const char *Cmd) | |
620 | { | |
621 | char cmdp = param_getchar(Cmd, 0); | |
622 | if (cmdp == 'h' || cmdp == 'H') | |
623 | return usage_data_autocorr(); | |
624 | int window = 4000; //set default | |
625 | char grph=0; | |
626 | bool updateGrph = false; | |
627 | sscanf(Cmd, "%i %c", &window, &grph); | |
628 | ||
629 | if (window >= GraphTraceLen) { | |
630 | PrintAndLog("window must be smaller than trace (%d samples)", | |
631 | GraphTraceLen); | |
632 | return 0; | |
633 | } | |
634 | if (grph == 'g') updateGrph=true; | |
635 | return AutoCorrelate(window, updateGrph, true); | |
636 | } | |
637 | ||
638 | int CmdBitsamples(const char *Cmd) | |
639 | { | |
640 | int cnt = 0; | |
641 | uint8_t got[12288]; | |
642 | ||
643 | GetFromBigBuf(got,sizeof(got),0); | |
644 | WaitForResponse(CMD_ACK,NULL); | |
645 | ||
646 | for (int j = 0; j < sizeof(got); j++) { | |
647 | for (int k = 0; k < 8; k++) { | |
648 | if(got[j] & (1 << (7 - k))) { | |
649 | GraphBuffer[cnt++] = 1; | |
650 | } else { | |
651 | GraphBuffer[cnt++] = 0; | |
652 | } | |
653 | } | |
654 | } | |
655 | GraphTraceLen = cnt; | |
656 | RepaintGraphWindow(); | |
657 | return 0; | |
658 | } | |
659 | ||
660 | int CmdBuffClear(const char *Cmd) | |
661 | { | |
662 | UsbCommand c = {CMD_BUFF_CLEAR}; | |
663 | SendCommand(&c); | |
664 | ClearGraph(true); | |
665 | return 0; | |
666 | } | |
667 | ||
668 | int CmdDec(const char *Cmd) | |
669 | { | |
670 | for (int i = 0; i < (GraphTraceLen / 2); ++i) | |
671 | GraphBuffer[i] = GraphBuffer[i * 2]; | |
672 | GraphTraceLen /= 2; | |
673 | PrintAndLog("decimated by 2"); | |
674 | RepaintGraphWindow(); | |
675 | return 0; | |
676 | } | |
677 | /** | |
678 | * Undecimate - I'd call it 'interpolate', but we'll save that | |
679 | * name until someone does an actual interpolation command, not just | |
680 | * blindly repeating samples | |
681 | * @param Cmd | |
682 | * @return | |
683 | */ | |
684 | int CmdUndec(const char *Cmd) | |
685 | { | |
686 | if(param_getchar(Cmd, 0) == 'h') | |
687 | { | |
688 | PrintAndLog("Usage: data undec [factor]"); | |
689 | PrintAndLog("This function performs un-decimation, by repeating each sample N times"); | |
690 | PrintAndLog("Options: "); | |
691 | PrintAndLog(" h This help"); | |
692 | PrintAndLog(" factor The number of times to repeat each sample.[default:2]"); | |
693 | PrintAndLog("Example: 'data undec 3'"); | |
694 | return 0; | |
695 | } | |
696 | ||
697 | uint8_t factor = param_get8ex(Cmd, 0,2, 10); | |
698 | //We have memory, don't we? | |
699 | int swap[MAX_GRAPH_TRACE_LEN] = { 0 }; | |
700 | uint32_t g_index = 0, s_index = 0; | |
701 | while(g_index < GraphTraceLen && s_index + factor < MAX_GRAPH_TRACE_LEN) | |
702 | { | |
703 | int count = 0; | |
704 | for(count = 0; count < factor && s_index + count < MAX_GRAPH_TRACE_LEN; count++) | |
705 | swap[s_index+count] = GraphBuffer[g_index]; | |
706 | ||
707 | s_index += count; | |
708 | g_index++; | |
709 | } | |
710 | ||
711 | memcpy(GraphBuffer, swap, s_index * sizeof(int)); | |
712 | GraphTraceLen = s_index; | |
713 | RepaintGraphWindow(); | |
714 | return 0; | |
715 | } | |
716 | ||
717 | //by marshmellow | |
718 | //shift graph zero up or down based on input + or - | |
719 | int CmdGraphShiftZero(const char *Cmd) | |
720 | { | |
721 | ||
722 | int shift=0; | |
723 | //set options from parameters entered with the command | |
724 | sscanf(Cmd, "%i", &shift); | |
725 | int shiftedVal=0; | |
726 | for(int i = 0; i<GraphTraceLen; i++){ | |
727 | shiftedVal=GraphBuffer[i]+shift; | |
728 | if (shiftedVal>127) | |
729 | shiftedVal=127; | |
730 | else if (shiftedVal<-127) | |
731 | shiftedVal=-127; | |
732 | GraphBuffer[i]= shiftedVal; | |
733 | } | |
734 | CmdNorm(""); | |
735 | return 0; | |
736 | } | |
737 | ||
738 | //by marshmellow | |
739 | //use large jumps in read samples to identify edges of waves and then amplify that wave to max | |
740 | //similar to dirtheshold, threshold commands | |
741 | //takes a threshold length which is the measured length between two samples then determines an edge | |
742 | int CmdAskEdgeDetect(const char *Cmd) | |
743 | { | |
744 | int thresLen = 25; | |
745 | int Last = 0; | |
746 | sscanf(Cmd, "%i", &thresLen); | |
747 | ||
748 | for(int i = 1; i<GraphTraceLen; i++){ | |
749 | if (GraphBuffer[i]-GraphBuffer[i-1]>=thresLen) //large jump up | |
750 | Last = 127; | |
751 | else if(GraphBuffer[i]-GraphBuffer[i-1]<=-1*thresLen) //large jump down | |
752 | Last = -127; | |
753 | GraphBuffer[i-1] = Last; | |
754 | } | |
755 | RepaintGraphWindow(); | |
756 | return 0; | |
757 | } | |
758 | ||
759 | /* Print our clock rate */ | |
760 | // uses data from graphbuffer | |
761 | // adjusted to take char parameter for type of modulation to find the clock - by marshmellow. | |
762 | int CmdDetectClockRate(const char *Cmd) | |
763 | { | |
764 | char cmdp = param_getchar(Cmd, 0); | |
765 | if (strlen(Cmd) > 6 || strlen(Cmd) == 0 || cmdp == 'h' || cmdp == 'H') { | |
766 | PrintAndLog("Usage: data detectclock [modulation] <clock>"); | |
767 | PrintAndLog(" [modulation as char], specify the modulation type you want to detect the clock of"); | |
768 | PrintAndLog(" <clock> , specify the clock (optional - to get best start position only)"); | |
769 | PrintAndLog(" 'a' = ask, 'f' = fsk, 'n' = nrz/direct, 'p' = psk"); | |
770 | PrintAndLog(""); | |
771 | PrintAndLog(" sample: data detectclock a = detect the clock of an ask modulated wave in the GraphBuffer"); | |
772 | PrintAndLog(" data detectclock f = detect the clock of an fsk modulated wave in the GraphBuffer"); | |
773 | PrintAndLog(" data detectclock p = detect the clock of an psk modulated wave in the GraphBuffer"); | |
774 | PrintAndLog(" data detectclock n = detect the clock of an nrz/direct modulated wave in the GraphBuffer"); | |
775 | } | |
776 | int ans=0; | |
777 | if (cmdp == 'a'){ | |
778 | ans = GetAskClock(Cmd+1, true, false); | |
779 | } else if (cmdp == 'f'){ | |
780 | ans = GetFskClock("", true, false); | |
781 | } else if (cmdp == 'n'){ | |
782 | ans = GetNrzClock("", true, false); | |
783 | } else if (cmdp == 'p'){ | |
784 | ans = GetPskClock("", true, false); | |
785 | } else { | |
786 | PrintAndLog ("Please specify a valid modulation to detect the clock of - see option h for help"); | |
787 | } | |
788 | return ans; | |
789 | } | |
790 | ||
791 | char *GetFSKType(uint8_t fchigh, uint8_t fclow, uint8_t invert) | |
792 | { | |
793 | static char fType[8]; | |
794 | memset(fType, 0x00, 8); | |
795 | char *fskType = fType; | |
796 | if (fchigh==10 && fclow==8){ | |
797 | if (invert) //fsk2a | |
798 | memcpy(fskType, "FSK2a", 5); | |
799 | else //fsk2 | |
800 | memcpy(fskType, "FSK2", 4); | |
801 | } else if (fchigh == 8 && fclow == 5) { | |
802 | if (invert) | |
803 | memcpy(fskType, "FSK1", 4); | |
804 | else | |
805 | memcpy(fskType, "FSK1a", 5); | |
806 | } else { | |
807 | memcpy(fskType, "FSK??", 5); | |
808 | } | |
809 | return fskType; | |
810 | } | |
811 | ||
812 | //by marshmellow | |
813 | //fsk raw demod and print binary | |
814 | //takes 4 arguments - Clock, invert, fchigh, fclow | |
815 | //defaults: clock = 50, invert=1, fchigh=10, fclow=8 (RF/10 RF/8 (fsk2a)) | |
816 | int FSKrawDemod(const char *Cmd, bool verbose) | |
817 | { | |
818 | //raw fsk demod no manchester decoding no start bit finding just get binary from wave | |
819 | uint8_t rfLen, invert, fchigh, fclow; | |
820 | //set defaults | |
821 | //set options from parameters entered with the command | |
822 | rfLen = param_get8(Cmd, 0); | |
823 | invert = param_get8(Cmd, 1); | |
824 | fchigh = param_get8(Cmd, 2); | |
825 | fclow = param_get8(Cmd, 3); | |
826 | ||
827 | if (strlen(Cmd)>0 && strlen(Cmd)<=2) { | |
828 | if (rfLen==1) { | |
829 | invert = 1; //if invert option only is used | |
830 | rfLen = 0; | |
831 | } | |
832 | } | |
833 | uint8_t BitStream[MAX_GRAPH_TRACE_LEN]={0}; | |
834 | size_t BitLen = getFromGraphBuf(BitStream); | |
835 | if (BitLen==0) return 0; | |
836 | //get field clock lengths | |
837 | uint16_t fcs=0; | |
838 | if (!fchigh || !fclow) { | |
839 | fcs = countFC(BitStream, BitLen, 1); | |
840 | if (!fcs) { | |
841 | fchigh = 10; | |
842 | fclow = 8; | |
843 | } else { | |
844 | fchigh = (fcs >> 8) & 0x00FF; | |
845 | fclow = fcs & 0x00FF; | |
846 | } | |
847 | } | |
848 | //get bit clock length | |
849 | if (!rfLen) { | |
850 | rfLen = detectFSKClk(BitStream, BitLen, fchigh, fclow); | |
851 | if (!rfLen) rfLen = 50; | |
852 | } | |
853 | int size = fskdemod(BitStream, BitLen, rfLen, invert, fchigh, fclow); | |
854 | if (size > 0) { | |
855 | setDemodBuf(BitStream,size,0); | |
856 | ||
857 | // Now output the bitstream to the scrollback by line of 16 bits | |
858 | if (verbose || g_debugMode) { | |
859 | PrintAndLog("\nUsing Clock:%u, invert:%u, fchigh:%u, fclow:%u", (unsigned int)rfLen, (unsigned int)invert, (unsigned int)fchigh, (unsigned int)fclow); | |
860 | PrintAndLog("%s decoded bitstream:",GetFSKType(fchigh,fclow,invert)); | |
861 | printDemodBuff(); | |
862 | } | |
863 | ||
864 | return 1; | |
865 | } else { | |
866 | if (g_debugMode) PrintAndLog("no FSK data found"); | |
867 | } | |
868 | return 0; | |
869 | } | |
870 | ||
871 | //by marshmellow | |
872 | //fsk raw demod and print binary | |
873 | //takes 4 arguments - Clock, invert, fchigh, fclow | |
874 | //defaults: clock = 50, invert=1, fchigh=10, fclow=8 (RF/10 RF/8 (fsk2a)) | |
875 | int CmdFSKrawdemod(const char *Cmd) | |
876 | { | |
877 | char cmdp = param_getchar(Cmd, 0); | |
878 | if (strlen(Cmd) > 20 || cmdp == 'h' || cmdp == 'H') { | |
879 | PrintAndLog("Usage: data rawdemod fs [clock] <invert> [fchigh] [fclow]"); | |
880 | PrintAndLog(" [set clock as integer] optional, omit for autodetect."); | |
881 | PrintAndLog(" <invert>, 1 for invert output, can be used even if the clock is omitted"); | |
882 | PrintAndLog(" [fchigh], larger field clock length, omit for autodetect"); | |
883 | PrintAndLog(" [fclow], small field clock length, omit for autodetect"); | |
884 | PrintAndLog(""); | |
885 | PrintAndLog(" sample: data rawdemod fs = demod an fsk tag from GraphBuffer using autodetect"); | |
886 | PrintAndLog(" : data rawdemod fs 32 = demod an fsk tag from GraphBuffer using a clock of RF/32, autodetect fc"); | |
887 | PrintAndLog(" : data rawdemod fs 1 = demod an fsk tag from GraphBuffer using autodetect, invert output"); | |
888 | PrintAndLog(" : data rawdemod fs 32 1 = demod an fsk tag from GraphBuffer using a clock of RF/32, invert output, autodetect fc"); | |
889 | PrintAndLog(" : data rawdemod fs 64 0 8 5 = demod an fsk1 RF/64 tag from GraphBuffer"); | |
890 | PrintAndLog(" : data rawdemod fs 50 0 10 8 = demod an fsk2 RF/50 tag from GraphBuffer"); | |
891 | PrintAndLog(" : data rawdemod fs 50 1 10 8 = demod an fsk2a RF/50 tag from GraphBuffer"); | |
892 | return 0; | |
893 | } | |
894 | return FSKrawDemod(Cmd, true); | |
895 | } | |
896 | ||
897 | //by marshmellow | |
898 | //Paradox Prox demod - FSK RF/50 with preamble of 00001111 (then manchester encoded) | |
899 | //print full Paradox Prox ID and some bit format details if found | |
900 | int CmdFSKdemodParadox(const char *Cmd) | |
901 | { | |
902 | //raw fsk demod no manchester decoding no start bit finding just get binary from wave | |
903 | uint32_t hi2=0, hi=0, lo=0; | |
904 | ||
905 | uint8_t BitStream[MAX_GRAPH_TRACE_LEN]={0}; | |
906 | size_t BitLen = getFromGraphBuf(BitStream); | |
907 | if (BitLen==0) return 0; | |
908 | //get binary from fsk wave | |
909 | int idx = ParadoxdemodFSK(BitStream,&BitLen,&hi2,&hi,&lo); | |
910 | if (idx<0){ | |
911 | if (g_debugMode){ | |
912 | if (idx==-1){ | |
913 | PrintAndLog("DEBUG: Just Noise Detected"); | |
914 | } else if (idx == -2) { | |
915 | PrintAndLog("DEBUG: Error demoding fsk"); | |
916 | } else if (idx == -3) { | |
917 | PrintAndLog("DEBUG: Preamble not found"); | |
918 | } else if (idx == -4) { | |
919 | PrintAndLog("DEBUG: Error in Manchester data"); | |
920 | } else { | |
921 | PrintAndLog("DEBUG: Error demoding fsk %d", idx); | |
922 | } | |
923 | } | |
924 | return 0; | |
925 | } | |
926 | if (hi2==0 && hi==0 && lo==0){ | |
927 | if (g_debugMode) PrintAndLog("DEBUG: Error - no value found"); | |
928 | return 0; | |
929 | } | |
930 | uint32_t fc = ((hi & 0x3)<<6) | (lo>>26); | |
931 | uint32_t cardnum = (lo>>10)&0xFFFF; | |
932 | uint32_t rawLo = bytebits_to_byte(BitStream+idx+64,32); | |
933 | uint32_t rawHi = bytebits_to_byte(BitStream+idx+32,32); | |
934 | uint32_t rawHi2 = bytebits_to_byte(BitStream+idx,32); | |
935 | ||
936 | PrintAndLog("Paradox TAG ID: %x%08x - FC: %d - Card: %d - Checksum: %02x - RAW: %08x%08x%08x", | |
937 | hi>>10, (hi & 0x3)<<26 | (lo>>10), fc, cardnum, (lo>>2) & 0xFF, rawHi2, rawHi, rawLo); | |
938 | setDemodBuf(BitStream,BitLen,idx); | |
939 | if (g_debugMode){ | |
940 | PrintAndLog("DEBUG: idx: %d, len: %d, Printing Demod Buffer:", idx, BitLen); | |
941 | printDemodBuff(); | |
942 | } | |
943 | return 1; | |
944 | } | |
945 | ||
946 | //by marshmellow | |
947 | //IO-Prox demod - FSK RF/64 with preamble of 000000001 | |
948 | //print ioprox ID and some format details | |
949 | int CmdFSKdemodIO(const char *Cmd) | |
950 | { | |
951 | int idx=0; | |
952 | //something in graphbuffer? | |
953 | if (GraphTraceLen < 65) { | |
954 | if (g_debugMode)PrintAndLog("DEBUG: not enough samples in GraphBuffer"); | |
955 | return 0; | |
956 | } | |
957 | uint8_t BitStream[MAX_GRAPH_TRACE_LEN]={0}; | |
958 | size_t BitLen = getFromGraphBuf(BitStream); | |
959 | if (BitLen==0) return 0; | |
960 | ||
961 | //get binary from fsk wave | |
962 | idx = IOdemodFSK(BitStream,BitLen); | |
963 | if (idx<0){ | |
964 | if (g_debugMode){ | |
965 | if (idx==-1){ | |
966 | PrintAndLog("DEBUG: Just Noise Detected"); | |
967 | } else if (idx == -2) { | |
968 | PrintAndLog("DEBUG: not enough samples"); | |
969 | } else if (idx == -3) { | |
970 | PrintAndLog("DEBUG: error during fskdemod"); | |
971 | } else if (idx == -4) { | |
972 | PrintAndLog("DEBUG: Preamble not found"); | |
973 | } else if (idx == -5) { | |
974 | PrintAndLog("DEBUG: Separator bits not found"); | |
975 | } else { | |
976 | PrintAndLog("DEBUG: Error demoding fsk %d", idx); | |
977 | } | |
978 | } | |
979 | return 0; | |
980 | } | |
981 | if (idx==0){ | |
982 | if (g_debugMode){ | |
983 | PrintAndLog("DEBUG: IO Prox Data not found - FSK Bits: %d",BitLen); | |
984 | if (BitLen > 92) PrintAndLog("%s", sprint_bin_break(BitStream,92,16)); | |
985 | } | |
986 | return 0; | |
987 | } | |
988 | //Index map | |
989 | //0 10 20 30 40 50 60 | |
990 | //| | | | | | | | |
991 | //01234567 8 90123456 7 89012345 6 78901234 5 67890123 4 56789012 3 45678901 23 | |
992 | //----------------------------------------------------------------------------- | |
993 | //00000000 0 11110000 1 facility 1 version* 1 code*one 1 code*two 1 ???????? 11 | |
994 | // | |
995 | //XSF(version)facility:codeone+codetwo (raw) | |
996 | //Handle the data | |
997 | if (idx+64>BitLen) { | |
998 | if (g_debugMode) PrintAndLog("not enough bits found - bitlen: %d",BitLen); | |
999 | return 0; | |
1000 | } | |
1001 | 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]); | |
1002 | 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]); | |
1003 | 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]); | |
1004 | 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]); | |
1005 | 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]); | |
1006 | 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]); | |
1007 | 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]); | |
1008 | ||
1009 | uint32_t code = bytebits_to_byte(BitStream+idx,32); | |
1010 | uint32_t code2 = bytebits_to_byte(BitStream+idx+32,32); | |
1011 | uint8_t version = bytebits_to_byte(BitStream+idx+27,8); //14,4 | |
1012 | uint8_t facilitycode = bytebits_to_byte(BitStream+idx+18,8) ; | |
1013 | uint16_t number = (bytebits_to_byte(BitStream+idx+36,8)<<8)|(bytebits_to_byte(BitStream+idx+45,8)); //36,9 | |
1014 | uint8_t crc = bytebits_to_byte(BitStream+idx+54,8); | |
1015 | uint16_t calccrc = 0; | |
1016 | ||
1017 | for (uint8_t i=1; i<6; ++i){ | |
1018 | calccrc += bytebits_to_byte(BitStream+idx+9*i,8); | |
1019 | } | |
1020 | calccrc &= 0xff; | |
1021 | calccrc = 0xff - calccrc; | |
1022 | ||
1023 | char *crcStr = (crc == calccrc) ? "crc ok": "!crc"; | |
1024 | ||
1025 | PrintAndLog("IO Prox XSF(%02d)%02x:%05d (%08x%08x) [%02x %s]",version,facilitycode,number,code,code2, crc, crcStr); | |
1026 | setDemodBuf(BitStream,64,idx); | |
1027 | if (g_debugMode){ | |
1028 | PrintAndLog("DEBUG: idx: %d, Len: %d, Printing demod buffer:",idx,64); | |
1029 | printDemodBuff(); | |
1030 | } | |
1031 | return 1; | |
1032 | } | |
1033 | ||
1034 | //by marshmellow | |
1035 | //Pyramid Prox demod - FSK RF/50 with preamble of 0000000000000001 (always a 128 bit data stream) | |
1036 | //print full Farpointe Data/Pyramid Prox ID and some bit format details if found | |
1037 | int CmdFSKdemodPyramid(const char *Cmd) | |
1038 | { | |
1039 | //raw fsk demod no manchester decoding no start bit finding just get binary from wave | |
1040 | uint8_t BitStream[MAX_GRAPH_TRACE_LEN]={0}; | |
1041 | size_t size = getFromGraphBuf(BitStream); | |
1042 | if (size==0) return 0; | |
1043 | ||
1044 | //get binary from fsk wave | |
1045 | int idx = PyramiddemodFSK(BitStream, &size); | |
1046 | if (idx < 0){ | |
1047 | if (g_debugMode){ | |
1048 | if (idx == -5) | |
1049 | PrintAndLog("DEBUG: Error - not enough samples"); | |
1050 | else if (idx == -1) | |
1051 | PrintAndLog("DEBUG: Error - only noise found"); | |
1052 | else if (idx == -2) | |
1053 | PrintAndLog("DEBUG: Error - problem during FSK demod"); | |
1054 | else if (idx == -3) | |
1055 | PrintAndLog("DEBUG: Error - Size not correct: %d", size); | |
1056 | else if (idx == -4) | |
1057 | PrintAndLog("DEBUG: Error - Pyramid preamble not found"); | |
1058 | else | |
1059 | PrintAndLog("DEBUG: Error - idx: %d",idx); | |
1060 | } | |
1061 | return 0; | |
1062 | } | |
1063 | // Index map | |
1064 | // 0 10 20 30 40 50 60 | |
1065 | // | | | | | | | | |
1066 | // 0123456 7 8901234 5 6789012 3 4567890 1 2345678 9 0123456 7 8901234 5 6789012 3 | |
1067 | // ----------------------------------------------------------------------------- | |
1068 | // 0000000 0 0000000 1 0000000 1 0000000 1 0000000 1 0000000 1 0000000 1 0000000 1 | |
1069 | // premable xxxxxxx o xxxxxxx o xxxxxxx o xxxxxxx o xxxxxxx o xxxxxxx o xxxxxxx o | |
1070 | ||
1071 | // 64 70 80 90 100 110 120 | |
1072 | // | | | | | | | | |
1073 | // 4567890 1 2345678 9 0123456 7 8901234 5 6789012 3 4567890 1 2345678 9 0123456 7 | |
1074 | // ----------------------------------------------------------------------------- | |
1075 | // 0000000 1 0000000 1 0000000 1 0110111 0 0011000 1 0000001 0 0001100 1 1001010 0 | |
1076 | // xxxxxxx o xxxxxxx o xxxxxxx o xswffff o ffffccc o ccccccc o ccccccw o ppppppp o | |
1077 | // |---115---||---------71---------| | |
1078 | // s = format start bit, o = odd parity of last 7 bits | |
1079 | // f = facility code, c = card number | |
1080 | // w = wiegand parity, x = extra space for other formats | |
1081 | // p = unknown checksum | |
1082 | // (26 bit format shown) | |
1083 | ||
1084 | //get bytes for checksum calc | |
1085 | uint8_t checksum = bytebits_to_byte(BitStream + idx + 120, 8); | |
1086 | uint8_t csBuff[14] = {0x00}; | |
1087 | for (uint8_t i = 0; i < 13; i++){ | |
1088 | csBuff[i] = bytebits_to_byte(BitStream + idx + 16 + (i*8), 8); | |
1089 | } | |
1090 | //check checksum calc | |
1091 | //checksum calc thanks to ICEMAN!! | |
1092 | uint32_t checkCS = CRC8Maxim(csBuff,13); | |
1093 | ||
1094 | //get raw ID before removing parities | |
1095 | uint32_t rawLo = bytebits_to_byte(BitStream+idx+96,32); | |
1096 | uint32_t rawHi = bytebits_to_byte(BitStream+idx+64,32); | |
1097 | uint32_t rawHi2 = bytebits_to_byte(BitStream+idx+32,32); | |
1098 | uint32_t rawHi3 = bytebits_to_byte(BitStream+idx,32); | |
1099 | setDemodBuf(BitStream,128,idx); | |
1100 | ||
1101 | size = removeParity(BitStream, idx+8, 8, 1, 120); | |
1102 | if (size != 105){ | |
1103 | if (g_debugMode) | |
1104 | PrintAndLog("DEBUG: Error at parity check - tag size does not match Pyramid format, SIZE: %d, IDX: %d, hi3: %x",size, idx, rawHi3); | |
1105 | return 0; | |
1106 | } | |
1107 | ||
1108 | // ok valid card found! | |
1109 | ||
1110 | // Index map | |
1111 | // 0 10 20 30 40 50 60 70 | |
1112 | // | | | | | | | | | |
1113 | // 01234567890123456789012345678901234567890123456789012345678901234567890 | |
1114 | // ----------------------------------------------------------------------- | |
1115 | // 00000000000000000000000000000000000000000000000000000000000000000000000 | |
1116 | // xxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxx | |
1117 | ||
1118 | // 71 80 90 100 | |
1119 | // | | | | | |
1120 | // 1 2 34567890 1234567890123456 7 8901234 | |
1121 | // --------------------------------------- | |
1122 | // 1 1 01110011 0000000001000110 0 1001010 | |
1123 | // s w ffffffff cccccccccccccccc w ppppppp | |
1124 | // |--115-| |------71------| | |
1125 | // s = format start bit, o = odd parity of last 7 bits | |
1126 | // f = facility code, c = card number | |
1127 | // w = wiegand parity, x = extra space for other formats | |
1128 | // p = unknown checksum | |
1129 | // (26 bit format shown) | |
1130 | ||
1131 | //find start bit to get fmtLen | |
1132 | int j; | |
1133 | for (j=0; j<size; j++){ | |
1134 | if(BitStream[j]) break; | |
1135 | } | |
1136 | uint8_t fmtLen = size-j-8; | |
1137 | uint32_t fc = 0; | |
1138 | uint32_t cardnum = 0; | |
1139 | uint32_t code1 = 0; | |
1140 | if (fmtLen==26){ | |
1141 | fc = bytebits_to_byte(BitStream+73, 8); | |
1142 | cardnum = bytebits_to_byte(BitStream+81, 16); | |
1143 | code1 = bytebits_to_byte(BitStream+72,fmtLen); | |
1144 | 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); | |
1145 | } else if (fmtLen==45){ | |
1146 | fmtLen=42; //end = 10 bits not 7 like 26 bit fmt | |
1147 | fc = bytebits_to_byte(BitStream+53, 10); | |
1148 | cardnum = bytebits_to_byte(BitStream+63, 32); | |
1149 | PrintAndLog("Pyramid ID Found - BitLength: %d, FC: %d, Card: %d - Raw: %08x%08x%08x%08x", fmtLen, fc, cardnum, rawHi3, rawHi2, rawHi, rawLo); | |
1150 | } else { | |
1151 | cardnum = bytebits_to_byte(BitStream+81, 16); | |
1152 | if (fmtLen>32){ | |
1153 | //code1 = bytebits_to_byte(BitStream+(size-fmtLen),fmtLen-32); | |
1154 | //code2 = bytebits_to_byte(BitStream+(size-32),32); | |
1155 | PrintAndLog("Pyramid ID Found - BitLength: %d -unknown BitLength- (%d), Raw: %08x%08x%08x%08x", fmtLen, cardnum, rawHi3, rawHi2, rawHi, rawLo); | |
1156 | } else{ | |
1157 | //code1 = bytebits_to_byte(BitStream+(size-fmtLen),fmtLen); | |
1158 | PrintAndLog("Pyramid ID Found - BitLength: %d -unknown BitLength- (%d), Raw: %08x%08x%08x%08x", fmtLen, cardnum, rawHi3, rawHi2, rawHi, rawLo); | |
1159 | } | |
1160 | } | |
1161 | if (checksum == checkCS) | |
1162 | PrintAndLog("Checksum %02x passed", checksum); | |
1163 | else | |
1164 | PrintAndLog("Checksum %02x failed - should have been %02x", checksum, checkCS); | |
1165 | ||
1166 | if (g_debugMode){ | |
1167 | PrintAndLog("DEBUG: idx: %d, Len: %d, Printing Demod Buffer:", idx, 128); | |
1168 | printDemodBuff(); | |
1169 | } | |
1170 | return 1; | |
1171 | } | |
1172 | ||
1173 | // FDX-B ISO11784/85 demod (aka animal tag) BIPHASE, inverted, rf/32, with preamble of 00000000001 (128bits) | |
1174 | // 8 databits + 1 parity (1) | |
1175 | // CIITT 16 chksum | |
1176 | // NATIONAL CODE, ICAR database | |
1177 | // COUNTRY CODE (ISO3166) or http://cms.abvma.ca/uploads/ManufacturersISOsandCountryCodes.pdf | |
1178 | // FLAG (animal/non-animal) | |
1179 | /* | |
1180 | 38 IDbits | |
1181 | 10 country code | |
1182 | 1 extra app bit | |
1183 | 14 reserved bits | |
1184 | 1 animal bit | |
1185 | 16 ccitt CRC chksum over 64bit ID CODE. | |
1186 | 24 appli bits. | |
1187 | ||
1188 | -- sample: 985121004515220 [ 37FF65B88EF94 ] | |
1189 | */ | |
1190 | int CmdFDXBdemodBI(const char *Cmd){ | |
1191 | ||
1192 | int invert = 1; | |
1193 | int clk = 32; | |
1194 | int errCnt = 0; | |
1195 | int maxErr = 0; | |
1196 | uint8_t BitStream[MAX_DEMOD_BUF_LEN]; | |
1197 | size_t size = getFromGraphBuf(BitStream); | |
1198 | ||
1199 | errCnt = askdemod(BitStream, &size, &clk, &invert, maxErr, 0, 0); | |
1200 | if ( errCnt < 0 || errCnt > maxErr ) { | |
1201 | if (g_debugMode) PrintAndLog("DEBUG: no data or error found %d, clock: %d", errCnt, clk); | |
1202 | return 0; | |
1203 | } | |
1204 | ||
1205 | errCnt = BiphaseRawDecode(BitStream, &size, maxErr, 1); | |
1206 | if (errCnt < 0 || errCnt > maxErr ) { | |
1207 | if (g_debugMode) PrintAndLog("Error BiphaseRawDecode: %d", errCnt); | |
1208 | return 0; | |
1209 | } | |
1210 | ||
1211 | int preambleIndex = FDXBdemodBI(BitStream, &size); | |
1212 | if (preambleIndex < 0){ | |
1213 | if (g_debugMode) PrintAndLog("Error FDXBDemod , no startmarker found :: %d",preambleIndex); | |
1214 | return 0; | |
1215 | } | |
1216 | if (size != 128) { | |
1217 | if (g_debugMode) PrintAndLog("Error incorrect data length found"); | |
1218 | return 0; | |
1219 | } | |
1220 | ||
1221 | setDemodBuf(BitStream, 128, preambleIndex); | |
1222 | ||
1223 | // remove marker bits (1's every 9th digit after preamble) (pType = 2) | |
1224 | size = removeParity(BitStream, preambleIndex + 11, 9, 2, 117); | |
1225 | if ( size != 104 ) { | |
1226 | if (g_debugMode) PrintAndLog("Error removeParity:: %d", size); | |
1227 | return 0; | |
1228 | } | |
1229 | if (g_debugMode) { | |
1230 | char *bin = sprint_bin_break(BitStream,size,16); | |
1231 | PrintAndLog("DEBUG BinStream:\n%s",bin); | |
1232 | } | |
1233 | PrintAndLog("\nFDX-B / ISO 11784/5 Animal Tag ID Found:"); | |
1234 | if (g_debugMode) PrintAndLog("Start marker %d; Size %d", preambleIndex, size); | |
1235 | ||
1236 | //got a good demod | |
1237 | uint64_t NationalCode = ((uint64_t)(bytebits_to_byteLSBF(BitStream+32,6)) << 32) | bytebits_to_byteLSBF(BitStream,32); | |
1238 | uint32_t countryCode = bytebits_to_byteLSBF(BitStream+38,10); | |
1239 | uint8_t dataBlockBit = BitStream[48]; | |
1240 | uint32_t reservedCode = bytebits_to_byteLSBF(BitStream+49,14); | |
1241 | uint8_t animalBit = BitStream[63]; | |
1242 | uint32_t crc16 = bytebits_to_byteLSBF(BitStream+64,16); | |
1243 | uint32_t extended = bytebits_to_byteLSBF(BitStream+80,24); | |
1244 | ||
1245 | uint64_t rawid = ((uint64_t)bytebits_to_byte(BitStream,32)<<32) | bytebits_to_byte(BitStream+32,32); | |
1246 | uint8_t raw[8]; | |
1247 | num_to_bytes(rawid, 8, raw); | |
1248 | ||
1249 | if (g_debugMode) PrintAndLog("Raw ID Hex: %s", sprint_hex(raw,8)); | |
1250 | ||
1251 | uint16_t calcCrc = crc16_ccitt_kermit(raw, 8); | |
1252 | PrintAndLog("Animal ID: %04u-%012" PRIu64, countryCode, NationalCode); | |
1253 | PrintAndLog("National Code: %012" PRIu64, NationalCode); | |
1254 | PrintAndLog("CountryCode: %04u", countryCode); | |
1255 | PrintAndLog("Extended Data: %s", dataBlockBit ? "True" : "False"); | |
1256 | PrintAndLog("reserved Code: %u", reservedCode); | |
1257 | PrintAndLog("Animal Tag: %s", animalBit ? "True" : "False"); | |
1258 | PrintAndLog("CRC: 0x%04X - [%04X] - %s", crc16, calcCrc, (calcCrc == crc16) ? "Passed" : "Failed"); | |
1259 | PrintAndLog("Extended: 0x%X\n", extended); | |
1260 | ||
1261 | return 1; | |
1262 | } | |
1263 | ||
1264 | ||
1265 | //by marshmellow | |
1266 | //attempt to psk1 demod graph buffer | |
1267 | int PSKDemod(const char *Cmd, bool verbose) | |
1268 | { | |
1269 | int invert=0; | |
1270 | int clk=0; | |
1271 | int maxErr=100; | |
1272 | sscanf(Cmd, "%i %i %i", &clk, &invert, &maxErr); | |
1273 | if (clk==1){ | |
1274 | invert=1; | |
1275 | clk=0; | |
1276 | } | |
1277 | if (invert != 0 && invert != 1) { | |
1278 | if (g_debugMode || verbose) PrintAndLog("Invalid argument: %s", Cmd); | |
1279 | return 0; | |
1280 | } | |
1281 | uint8_t BitStream[MAX_GRAPH_TRACE_LEN]={0}; | |
1282 | size_t BitLen = getFromGraphBuf(BitStream); | |
1283 | if (BitLen==0) return 0; | |
1284 | uint8_t carrier=countFC(BitStream, BitLen, 0); | |
1285 | if (carrier!=2 && carrier!=4 && carrier!=8){ | |
1286 | //invalid carrier | |
1287 | return 0; | |
1288 | } | |
1289 | if (g_debugMode){ | |
1290 | PrintAndLog("Carrier: rf/%d",carrier); | |
1291 | } | |
1292 | int errCnt=0; | |
1293 | errCnt = pskRawDemod(BitStream, &BitLen, &clk, &invert); | |
1294 | if (errCnt > maxErr){ | |
1295 | if (g_debugMode || verbose) PrintAndLog("Too many errors found, clk: %d, invert: %d, numbits: %d, errCnt: %d",clk,invert,BitLen,errCnt); | |
1296 | return 0; | |
1297 | } | |
1298 | if (errCnt<0|| BitLen<16){ //throw away static - allow 1 and -1 (in case of threshold command first) | |
1299 | if (g_debugMode || verbose) PrintAndLog("no data found, clk: %d, invert: %d, numbits: %d, errCnt: %d",clk,invert,BitLen,errCnt); | |
1300 | return 0; | |
1301 | } | |
1302 | if (verbose || g_debugMode){ | |
1303 | PrintAndLog("\nUsing Clock:%d, invert:%d, Bits Found:%d",clk,invert,BitLen); | |
1304 | if (errCnt>0){ | |
1305 | PrintAndLog("# Errors during Demoding (shown as 7 in bit stream): %d",errCnt); | |
1306 | } | |
1307 | } | |
1308 | //prime demod buffer for output | |
1309 | setDemodBuf(BitStream,BitLen,0); | |
1310 | return 1; | |
1311 | } | |
1312 | ||
1313 | // Indala 26 bit decode | |
1314 | // by marshmellow | |
1315 | // optional arguments - same as CmdpskNRZrawDemod (clock & invert) | |
1316 | int CmdIndalaDecode(const char *Cmd) | |
1317 | { | |
1318 | int ans; | |
1319 | if (strlen(Cmd)>0){ | |
1320 | ans = PSKDemod(Cmd, 0); | |
1321 | } else{ //default to RF/32 | |
1322 | ans = PSKDemod("32", 0); | |
1323 | } | |
1324 | ||
1325 | if (!ans){ | |
1326 | if (g_debugMode) | |
1327 | PrintAndLog("Error1: %d",ans); | |
1328 | return 0; | |
1329 | } | |
1330 | uint8_t invert=0; | |
1331 | size_t size = DemodBufferLen; | |
1332 | int startIdx = indala26decode(DemodBuffer, &size, &invert); | |
1333 | if (startIdx < 0 || size > 224) { | |
1334 | if (g_debugMode) | |
1335 | PrintAndLog("Error2: %d",ans); | |
1336 | return -1; | |
1337 | } | |
1338 | setDemodBuf(DemodBuffer, size, (size_t)startIdx); | |
1339 | if (invert) | |
1340 | if (g_debugMode) | |
1341 | PrintAndLog("Had to invert bits"); | |
1342 | ||
1343 | PrintAndLog("BitLen: %d",DemodBufferLen); | |
1344 | //convert UID to HEX | |
1345 | uint32_t uid1, uid2, uid3, uid4, uid5, uid6, uid7; | |
1346 | uid1=bytebits_to_byte(DemodBuffer,32); | |
1347 | uid2=bytebits_to_byte(DemodBuffer+32,32); | |
1348 | if (DemodBufferLen==64) { | |
1349 | PrintAndLog("Indala UID=%s (%x%08x)", sprint_bin_break(DemodBuffer,DemodBufferLen,16), uid1, uid2); | |
1350 | } else { | |
1351 | uid3=bytebits_to_byte(DemodBuffer+64,32); | |
1352 | uid4=bytebits_to_byte(DemodBuffer+96,32); | |
1353 | uid5=bytebits_to_byte(DemodBuffer+128,32); | |
1354 | uid6=bytebits_to_byte(DemodBuffer+160,32); | |
1355 | uid7=bytebits_to_byte(DemodBuffer+192,32); | |
1356 | PrintAndLog("Indala UID=%s (%x%08x%08x%08x%08x%08x%08x)", | |
1357 | sprint_bin_break(DemodBuffer,DemodBufferLen,16), uid1, uid2, uid3, uid4, uid5, uid6, uid7); | |
1358 | } | |
1359 | if (g_debugMode){ | |
1360 | PrintAndLog("DEBUG: printing demodbuffer:"); | |
1361 | printDemodBuff(); | |
1362 | } | |
1363 | return 1; | |
1364 | } | |
1365 | ||
1366 | int CmdPSKNexWatch(const char *Cmd) | |
1367 | { | |
1368 | if (!PSKDemod("", false)) return 0; | |
1369 | 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}; | |
1370 | size_t startIdx = 0, size = DemodBufferLen; | |
1371 | bool invert = false; | |
1372 | if (!preambleSearch(DemodBuffer, preamble, sizeof(preamble), &size, &startIdx)){ | |
1373 | // if didn't find preamble try again inverting | |
1374 | if (!PSKDemod("1", false)) return 0; | |
1375 | size = DemodBufferLen; | |
1376 | if (!preambleSearch(DemodBuffer, preamble, sizeof(preamble), &size, &startIdx)) return 0; | |
1377 | invert = true; | |
1378 | } | |
1379 | if (size != 128) return 0; | |
1380 | setDemodBuf(DemodBuffer, size, startIdx+4); | |
1381 | startIdx = 8+32; //4 = extra i added, 8 = preamble, 32 = reserved bits (always 0) | |
1382 | //get ID | |
1383 | uint32_t ID = 0; | |
1384 | for (uint8_t wordIdx=0; wordIdx<4; wordIdx++){ | |
1385 | for (uint8_t idx=0; idx<8; idx++){ | |
1386 | ID = (ID << 1) | DemodBuffer[startIdx+wordIdx+(idx*4)]; | |
1387 | } | |
1388 | } | |
1389 | //parity check (TBD) | |
1390 | ||
1391 | //checksum check (TBD) | |
1392 | ||
1393 | //output | |
1394 | PrintAndLog("NexWatch ID: %d", ID); | |
1395 | if (invert){ | |
1396 | PrintAndLog("Had to Invert - probably NexKey"); | |
1397 | for (uint8_t idx=0; idx<size; idx++) | |
1398 | DemodBuffer[idx] ^= 1; | |
1399 | } | |
1400 | ||
1401 | CmdPrintDemodBuff("x"); | |
1402 | return 1; | |
1403 | } | |
1404 | ||
1405 | // by marshmellow | |
1406 | // takes 3 arguments - clock, invert, maxErr as integers | |
1407 | // attempts to demodulate nrz only | |
1408 | // prints binary found and saves in demodbuffer for further commands | |
1409 | int NRZrawDemod(const char *Cmd, bool verbose) | |
1410 | { | |
1411 | int invert=0; | |
1412 | int clk=0; | |
1413 | int maxErr=100; | |
1414 | sscanf(Cmd, "%i %i %i", &clk, &invert, &maxErr); | |
1415 | if (clk==1){ | |
1416 | invert=1; | |
1417 | clk=0; | |
1418 | } | |
1419 | if (invert != 0 && invert != 1) { | |
1420 | PrintAndLog("Invalid argument: %s", Cmd); | |
1421 | return 0; | |
1422 | } | |
1423 | uint8_t BitStream[MAX_GRAPH_TRACE_LEN]={0}; | |
1424 | size_t BitLen = getFromGraphBuf(BitStream); | |
1425 | if (BitLen==0) return 0; | |
1426 | int errCnt=0; | |
1427 | int clkStartIdx = 0; | |
1428 | errCnt = nrzRawDemod(BitStream, &BitLen, &clk, &invert, &clkStartIdx); | |
1429 | if (errCnt > maxErr){ | |
1430 | if (g_debugMode) PrintAndLog("Too many errors found, clk: %d, invert: %d, numbits: %d, errCnt: %d",clk,invert,BitLen,errCnt); | |
1431 | return 0; | |
1432 | } | |
1433 | if (errCnt<0 || BitLen<16){ //throw away static - allow 1 and -1 (in case of threshold command first) | |
1434 | if (g_debugMode) PrintAndLog("no data found, clk: %d, invert: %d, numbits: %d, errCnt: %d",clk,invert,BitLen,errCnt); | |
1435 | return 0; | |
1436 | } | |
1437 | if (verbose || g_debugMode) PrintAndLog("Tried NRZ Demod using Clock: %d - invert: %d - Bits Found: %d",clk,invert,BitLen); | |
1438 | //prime demod buffer for output | |
1439 | setDemodBuf(BitStream,BitLen,0); | |
1440 | ||
1441 | if (errCnt>0 && (verbose || g_debugMode)) PrintAndLog("# Errors during Demoding (shown as 7 in bit stream): %d",errCnt); | |
1442 | if (verbose || g_debugMode) { | |
1443 | PrintAndLog("NRZ demoded bitstream:"); | |
1444 | // Now output the bitstream to the scrollback by line of 16 bits | |
1445 | printDemodBuff(); | |
1446 | } | |
1447 | return 1; | |
1448 | } | |
1449 | ||
1450 | int CmdNRZrawDemod(const char *Cmd) | |
1451 | { | |
1452 | char cmdp = param_getchar(Cmd, 0); | |
1453 | if (strlen(Cmd) > 16 || cmdp == 'h' || cmdp == 'H') { | |
1454 | PrintAndLog("Usage: data rawdemod nr [clock] <0|1> [maxError]"); | |
1455 | PrintAndLog(" [set clock as integer] optional, if not set, autodetect."); | |
1456 | PrintAndLog(" <invert>, 1 for invert output"); | |
1457 | PrintAndLog(" [set maximum allowed errors], default = 100."); | |
1458 | PrintAndLog(""); | |
1459 | PrintAndLog(" sample: data rawdemod nr = demod a nrz/direct tag from GraphBuffer"); | |
1460 | PrintAndLog(" : data rawdemod nr 32 = demod a nrz/direct tag from GraphBuffer using a clock of RF/32"); | |
1461 | PrintAndLog(" : data rawdemod nr 32 1 = demod a nrz/direct tag from GraphBuffer using a clock of RF/32 and inverting data"); | |
1462 | PrintAndLog(" : data rawdemod nr 1 = demod a nrz/direct tag from GraphBuffer while inverting data"); | |
1463 | 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"); | |
1464 | return 0; | |
1465 | } | |
1466 | return NRZrawDemod(Cmd, true); | |
1467 | } | |
1468 | ||
1469 | // by marshmellow | |
1470 | // takes 3 arguments - clock, invert, maxErr as integers | |
1471 | // attempts to demodulate psk only | |
1472 | // prints binary found and saves in demodbuffer for further commands | |
1473 | int CmdPSK1rawDemod(const char *Cmd) | |
1474 | { | |
1475 | int ans; | |
1476 | char cmdp = param_getchar(Cmd, 0); | |
1477 | if (strlen(Cmd) > 16 || cmdp == 'h' || cmdp == 'H') { | |
1478 | PrintAndLog("Usage: data rawdemod p1 [clock] <0|1> [maxError]"); | |
1479 | PrintAndLog(" [set clock as integer] optional, if not set, autodetect."); | |
1480 | PrintAndLog(" <invert>, 1 for invert output"); | |
1481 | PrintAndLog(" [set maximum allowed errors], default = 100."); | |
1482 | PrintAndLog(""); | |
1483 | PrintAndLog(" sample: data rawdemod p1 = demod a psk1 tag from GraphBuffer"); | |
1484 | PrintAndLog(" : data rawdemod p1 32 = demod a psk1 tag from GraphBuffer using a clock of RF/32"); | |
1485 | PrintAndLog(" : data rawdemod p1 32 1 = demod a psk1 tag from GraphBuffer using a clock of RF/32 and inverting data"); | |
1486 | PrintAndLog(" : data rawdemod p1 1 = demod a psk1 tag from GraphBuffer while inverting data"); | |
1487 | 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"); | |
1488 | return 0; | |
1489 | } | |
1490 | ans = PSKDemod(Cmd, true); | |
1491 | //output | |
1492 | if (!ans){ | |
1493 | if (g_debugMode) PrintAndLog("Error demoding: %d",ans); | |
1494 | return 0; | |
1495 | } | |
1496 | ||
1497 | PrintAndLog("PSK1 demoded bitstream:"); | |
1498 | // Now output the bitstream to the scrollback by line of 16 bits | |
1499 | printDemodBuff(); | |
1500 | return 1; | |
1501 | } | |
1502 | ||
1503 | // by marshmellow | |
1504 | // takes same args as cmdpsk1rawdemod | |
1505 | int CmdPSK2rawDemod(const char *Cmd) | |
1506 | { | |
1507 | int ans=0; | |
1508 | char cmdp = param_getchar(Cmd, 0); | |
1509 | if (strlen(Cmd) > 16 || cmdp == 'h' || cmdp == 'H') { | |
1510 | PrintAndLog("Usage: data rawdemod p2 [clock] <0|1> [maxError]"); | |
1511 | PrintAndLog(" [set clock as integer] optional, if not set, autodetect."); | |
1512 | PrintAndLog(" <invert>, 1 for invert output"); | |
1513 | PrintAndLog(" [set maximum allowed errors], default = 100."); | |
1514 | PrintAndLog(""); | |
1515 | PrintAndLog(" sample: data rawdemod p2 = demod a psk2 tag from GraphBuffer, autodetect clock"); | |
1516 | PrintAndLog(" : data rawdemod p2 32 = demod a psk2 tag from GraphBuffer using a clock of RF/32"); | |
1517 | PrintAndLog(" : data rawdemod p2 32 1 = demod a psk2 tag from GraphBuffer using a clock of RF/32 and inverting output"); | |
1518 | PrintAndLog(" : data rawdemod p2 1 = demod a psk2 tag from GraphBuffer, autodetect clock and invert output"); | |
1519 | 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"); | |
1520 | return 0; | |
1521 | } | |
1522 | ans=PSKDemod(Cmd, true); | |
1523 | if (!ans){ | |
1524 | if (g_debugMode) PrintAndLog("Error demoding: %d",ans); | |
1525 | return 0; | |
1526 | } | |
1527 | psk1TOpsk2(DemodBuffer, DemodBufferLen); | |
1528 | PrintAndLog("PSK2 demoded bitstream:"); | |
1529 | // Now output the bitstream to the scrollback by line of 16 bits | |
1530 | printDemodBuff(); | |
1531 | return 1; | |
1532 | } | |
1533 | ||
1534 | // by marshmellow - combines all raw demod functions into one menu command | |
1535 | int CmdRawDemod(const char *Cmd) | |
1536 | { | |
1537 | char cmdp = Cmd[0]; //param_getchar(Cmd, 0); | |
1538 | ||
1539 | if (strlen(Cmd) > 35 || cmdp == 'h' || cmdp == 'H' || strlen(Cmd)<2) { | |
1540 | PrintAndLog("Usage: data rawdemod [modulation] <help>|<options>"); | |
1541 | PrintAndLog(" [modulation] as 2 char, 'ab' for ask/biphase, 'am' for ask/manchester, 'ar' for ask/raw, 'fs' for fsk, ..."); | |
1542 | PrintAndLog(" 'nr' for nrz/direct, 'p1' for psk1, 'p2' for psk2"); | |
1543 | PrintAndLog(" <help> as 'h', prints the help for the specific modulation"); | |
1544 | PrintAndLog(" <options> see specific modulation help for optional parameters"); | |
1545 | PrintAndLog(""); | |
1546 | PrintAndLog(" sample: data rawdemod fs h = print help specific to fsk demod"); | |
1547 | PrintAndLog(" : data rawdemod fs = demod GraphBuffer using: fsk - autodetect"); | |
1548 | PrintAndLog(" : data rawdemod ab = demod GraphBuffer using: ask/biphase - autodetect"); | |
1549 | PrintAndLog(" : data rawdemod am = demod GraphBuffer using: ask/manchester - autodetect"); | |
1550 | PrintAndLog(" : data rawdemod ar = demod GraphBuffer using: ask/raw - autodetect"); | |
1551 | PrintAndLog(" : data rawdemod nr = demod GraphBuffer using: nrz/direct - autodetect"); | |
1552 | PrintAndLog(" : data rawdemod p1 = demod GraphBuffer using: psk1 - autodetect"); | |
1553 | PrintAndLog(" : data rawdemod p2 = demod GraphBuffer using: psk2 - autodetect"); | |
1554 | return 0; | |
1555 | } | |
1556 | char cmdp2 = Cmd[1]; | |
1557 | int ans = 0; | |
1558 | if (cmdp == 'f' && cmdp2 == 's'){ | |
1559 | ans = CmdFSKrawdemod(Cmd+2); | |
1560 | } else if(cmdp == 'a' && cmdp2 == 'b'){ | |
1561 | ans = Cmdaskbiphdemod(Cmd+2); | |
1562 | } else if(cmdp == 'a' && cmdp2 == 'm'){ | |
1563 | ans = Cmdaskmandemod(Cmd+2); | |
1564 | } else if(cmdp == 'a' && cmdp2 == 'r'){ | |
1565 | ans = Cmdaskrawdemod(Cmd+2); | |
1566 | } else if(cmdp == 'n' && cmdp2 == 'r'){ | |
1567 | ans = CmdNRZrawDemod(Cmd+2); | |
1568 | } else if(cmdp == 'p' && cmdp2 == '1'){ | |
1569 | ans = CmdPSK1rawDemod(Cmd+2); | |
1570 | } else if(cmdp == 'p' && cmdp2 == '2'){ | |
1571 | ans = CmdPSK2rawDemod(Cmd+2); | |
1572 | } else { | |
1573 | PrintAndLog("unknown modulation entered - see help ('h') for parameter structure"); | |
1574 | } | |
1575 | return ans; | |
1576 | } | |
1577 | ||
1578 | int CmdGrid(const char *Cmd) | |
1579 | { | |
1580 | sscanf(Cmd, "%i %i", &PlotGridX, &PlotGridY); | |
1581 | PlotGridXdefault= PlotGridX; | |
1582 | PlotGridYdefault= PlotGridY; | |
1583 | RepaintGraphWindow(); | |
1584 | return 0; | |
1585 | } | |
1586 | ||
1587 | int CmdSetGraphMarkers(const char *Cmd) { | |
1588 | sscanf(Cmd, "%i %i", &CursorCPos, &CursorDPos); | |
1589 | RepaintGraphWindow(); | |
1590 | return 0; | |
1591 | } | |
1592 | ||
1593 | int CmdHexsamples(const char *Cmd) | |
1594 | { | |
1595 | int i, j; | |
1596 | int requested = 0; | |
1597 | int offset = 0; | |
1598 | char string_buf[25]; | |
1599 | char* string_ptr = string_buf; | |
1600 | uint8_t got[BIGBUF_SIZE]; | |
1601 | ||
1602 | sscanf(Cmd, "%i %i", &requested, &offset); | |
1603 | ||
1604 | /* if no args send something */ | |
1605 | if (requested == 0) { | |
1606 | requested = 8; | |
1607 | } | |
1608 | if (offset + requested > sizeof(got)) { | |
1609 | PrintAndLog("Tried to read past end of buffer, <bytes> + <offset> > %d", BIGBUF_SIZE); | |
1610 | return 0; | |
1611 | } | |
1612 | ||
1613 | GetFromBigBuf(got,requested,offset); | |
1614 | WaitForResponse(CMD_ACK,NULL); | |
1615 | ||
1616 | i = 0; | |
1617 | for (j = 0; j < requested; j++) { | |
1618 | i++; | |
1619 | string_ptr += sprintf(string_ptr, "%02x ", got[j]); | |
1620 | if (i == 8) { | |
1621 | *(string_ptr - 1) = '\0'; // remove the trailing space | |
1622 | PrintAndLog("%s", string_buf); | |
1623 | string_buf[0] = '\0'; | |
1624 | string_ptr = string_buf; | |
1625 | i = 0; | |
1626 | } | |
1627 | if (j == requested - 1 && string_buf[0] != '\0') { // print any remaining bytes | |
1628 | *(string_ptr - 1) = '\0'; | |
1629 | PrintAndLog("%s", string_buf); | |
1630 | string_buf[0] = '\0'; | |
1631 | } | |
1632 | } | |
1633 | return 0; | |
1634 | } | |
1635 | ||
1636 | int CmdHide(const char *Cmd) | |
1637 | { | |
1638 | HideGraphWindow(); | |
1639 | return 0; | |
1640 | } | |
1641 | ||
1642 | //zero mean GraphBuffer | |
1643 | int CmdHpf(const char *Cmd) | |
1644 | { | |
1645 | int i; | |
1646 | int accum = 0; | |
1647 | ||
1648 | for (i = 10; i < GraphTraceLen; ++i) | |
1649 | accum += GraphBuffer[i]; | |
1650 | accum /= (GraphTraceLen - 10); | |
1651 | for (i = 0; i < GraphTraceLen; ++i) | |
1652 | GraphBuffer[i] -= accum; | |
1653 | ||
1654 | RepaintGraphWindow(); | |
1655 | return 0; | |
1656 | } | |
1657 | ||
1658 | uint8_t getByte(uint8_t bits_per_sample, BitstreamIn* b) | |
1659 | { | |
1660 | int i; | |
1661 | uint8_t val = 0; | |
1662 | for(i =0 ; i < bits_per_sample; i++) | |
1663 | { | |
1664 | val |= (headBit(b) << (7-i)); | |
1665 | } | |
1666 | return val; | |
1667 | } | |
1668 | ||
1669 | int getSamples(const char *Cmd, bool silent) | |
1670 | { | |
1671 | //If we get all but the last byte in bigbuf, | |
1672 | // we don't have to worry about remaining trash | |
1673 | // in the last byte in case the bits-per-sample | |
1674 | // does not line up on byte boundaries | |
1675 | ||
1676 | uint8_t got[BIGBUF_SIZE-1] = { 0 }; | |
1677 | ||
1678 | int n = strtol(Cmd, NULL, 0); | |
1679 | ||
1680 | if (n == 0 || n > sizeof(got)) | |
1681 | n = sizeof(got); | |
1682 | ||
1683 | PrintAndLog("Reading %d bytes from device memory\n", n); | |
1684 | GetFromBigBuf(got,n,0); | |
1685 | PrintAndLog("Data fetched"); | |
1686 | UsbCommand response; | |
1687 | WaitForResponse(CMD_ACK, &response); | |
1688 | uint8_t bits_per_sample = 8; | |
1689 | ||
1690 | //Old devices without this feature would send 0 at arg[0] | |
1691 | if(response.arg[0] > 0) | |
1692 | { | |
1693 | sample_config *sc = (sample_config *) response.d.asBytes; | |
1694 | PrintAndLog("Samples @ %d bits/smpl, decimation 1:%d ", sc->bits_per_sample | |
1695 | , sc->decimation); | |
1696 | bits_per_sample = sc->bits_per_sample; | |
1697 | } | |
1698 | if(bits_per_sample < 8) | |
1699 | { | |
1700 | PrintAndLog("Unpacking..."); | |
1701 | BitstreamIn bout = { got, bits_per_sample * n, 0}; | |
1702 | int j =0; | |
1703 | for (j = 0; j * bits_per_sample < n * 8 && j < n; j++) { | |
1704 | uint8_t sample = getByte(bits_per_sample, &bout); | |
1705 | GraphBuffer[j] = ((int) sample )- 128; | |
1706 | } | |
1707 | GraphTraceLen = j; | |
1708 | PrintAndLog("Unpacked %d samples" , j ); | |
1709 | }else | |
1710 | { | |
1711 | for (int j = 0; j < n; j++) { | |
1712 | GraphBuffer[j] = ((int)got[j]) - 128; | |
1713 | } | |
1714 | GraphTraceLen = n; | |
1715 | } | |
1716 | ||
1717 | RepaintGraphWindow(); | |
1718 | return 0; | |
1719 | } | |
1720 | ||
1721 | int CmdSamples(const char *Cmd) | |
1722 | { | |
1723 | return getSamples(Cmd, false); | |
1724 | } | |
1725 | ||
1726 | int CmdTuneSamples(const char *Cmd) | |
1727 | { | |
1728 | int timeout = 0, arg = FLAG_TUNE_ALL; | |
1729 | ||
1730 | if(*Cmd == 'l') { | |
1731 | arg = FLAG_TUNE_LF; | |
1732 | } else if (*Cmd == 'h') { | |
1733 | arg = FLAG_TUNE_HF; | |
1734 | } else if (*Cmd != '\0') { | |
1735 | PrintAndLog("use 'tune' or 'tune l' or 'tune h'"); | |
1736 | return 0; | |
1737 | } | |
1738 | ||
1739 | printf("\nMeasuring antenna characteristics, please wait..."); | |
1740 | ||
1741 | UsbCommand c = {CMD_MEASURE_ANTENNA_TUNING, {arg, 0, 0}}; | |
1742 | SendCommand(&c); | |
1743 | ||
1744 | UsbCommand resp; | |
1745 | while(!WaitForResponseTimeout(CMD_MEASURED_ANTENNA_TUNING,&resp,1000)) { | |
1746 | timeout++; | |
1747 | printf("."); | |
1748 | if (timeout > 7) { | |
1749 | PrintAndLog("\nNo response from Proxmark. Aborting..."); | |
1750 | return 1; | |
1751 | } | |
1752 | } | |
1753 | ||
1754 | int peakv, peakf; | |
1755 | int vLf125, vLf134, vHf; | |
1756 | vLf125 = resp.arg[0] & 0xffff; | |
1757 | vLf134 = resp.arg[0] >> 16; | |
1758 | vHf = resp.arg[1] & 0xffff;; | |
1759 | peakf = resp.arg[2] & 0xffff; | |
1760 | peakv = resp.arg[2] >> 16; | |
1761 | PrintAndLog(""); | |
1762 | PrintAndLog("# LF antenna: %5.2f V @ 125.00 kHz", vLf125/1000.0); | |
1763 | PrintAndLog("# LF antenna: %5.2f V @ 134.00 kHz", vLf134/1000.0); | |
1764 | PrintAndLog("# LF optimal: %5.2f V @%9.2f kHz", peakv/1000.0, 12000.0/(peakf+1)); | |
1765 | PrintAndLog("# HF antenna: %5.2f V @ 13.56 MHz", vHf/1000.0); | |
1766 | ||
1767 | #define LF_UNUSABLE_V 2948 // was 2000. Changed due to bugfix in voltage measurements. LF results are now 47% higher. | |
1768 | #define LF_MARGINAL_V 14739 // was 10000. Changed due to bugfix bug in voltage measurements. LF results are now 47% higher. | |
1769 | #define HF_UNUSABLE_V 3167 // was 2000. Changed due to bugfix in voltage measurements. HF results are now 58% higher. | |
1770 | #define HF_MARGINAL_V 7917 // was 5000. Changed due to bugfix in voltage measurements. HF results are now 58% higher. | |
1771 | ||
1772 | if (peakv < LF_UNUSABLE_V) | |
1773 | PrintAndLog("# Your LF antenna is unusable."); | |
1774 | else if (peakv < LF_MARGINAL_V) | |
1775 | PrintAndLog("# Your LF antenna is marginal."); | |
1776 | if (vHf < HF_UNUSABLE_V) | |
1777 | PrintAndLog("# Your HF antenna is unusable."); | |
1778 | else if (vHf < HF_MARGINAL_V) | |
1779 | PrintAndLog("# Your HF antenna is marginal."); | |
1780 | ||
1781 | if (peakv >= LF_UNUSABLE_V) { | |
1782 | for (int i = 0; i < 256; i++) { | |
1783 | GraphBuffer[i] = resp.d.asBytes[i] - 128; | |
1784 | } | |
1785 | PrintAndLog("Displaying LF tuning graph. Divisor 89 is 134khz, 95 is 125khz.\n"); | |
1786 | PrintAndLog("\n"); | |
1787 | GraphTraceLen = 256; | |
1788 | ShowGraphWindow(); | |
1789 | RepaintGraphWindow(); | |
1790 | } | |
1791 | ||
1792 | return 0; | |
1793 | } | |
1794 | ||
1795 | ||
1796 | int CmdLoad(const char *Cmd) | |
1797 | { | |
1798 | char filename[FILE_PATH_SIZE] = {0x00}; | |
1799 | int len = 0; | |
1800 | ||
1801 | len = strlen(Cmd); | |
1802 | if (len > FILE_PATH_SIZE) len = FILE_PATH_SIZE; | |
1803 | memcpy(filename, Cmd, len); | |
1804 | ||
1805 | FILE *f = fopen(filename, "r"); | |
1806 | if (!f) { | |
1807 | PrintAndLog("couldn't open '%s'", filename); | |
1808 | return 0; | |
1809 | } | |
1810 | ||
1811 | GraphTraceLen = 0; | |
1812 | char line[80]; | |
1813 | while (fgets(line, sizeof (line), f)) { | |
1814 | GraphBuffer[GraphTraceLen] = atoi(line); | |
1815 | GraphTraceLen++; | |
1816 | } | |
1817 | fclose(f); | |
1818 | PrintAndLog("loaded %d samples", GraphTraceLen); | |
1819 | RepaintGraphWindow(); | |
1820 | return 0; | |
1821 | } | |
1822 | ||
1823 | int CmdLtrim(const char *Cmd) | |
1824 | { | |
1825 | int ds = atoi(Cmd); | |
1826 | if (GraphTraceLen<=0) return 0; | |
1827 | for (int i = ds; i < GraphTraceLen; ++i) | |
1828 | GraphBuffer[i-ds] = GraphBuffer[i]; | |
1829 | GraphTraceLen -= ds; | |
1830 | ||
1831 | RepaintGraphWindow(); | |
1832 | return 0; | |
1833 | } | |
1834 | ||
1835 | // trim graph to input argument length | |
1836 | int CmdRtrim(const char *Cmd) | |
1837 | { | |
1838 | int ds = atoi(Cmd); | |
1839 | ||
1840 | GraphTraceLen = ds; | |
1841 | ||
1842 | RepaintGraphWindow(); | |
1843 | return 0; | |
1844 | } | |
1845 | ||
1846 | // trim graph (middle) piece | |
1847 | int CmdMtrim(const char *Cmd) { | |
1848 | int start = 0, stop = 0; | |
1849 | sscanf(Cmd, "%i %i", &start, &stop); | |
1850 | ||
1851 | if (start > GraphTraceLen || stop > GraphTraceLen || start > stop) return 0; | |
1852 | start++; //leave start position sample | |
1853 | ||
1854 | GraphTraceLen -= stop - start; | |
1855 | for (int i = 0; i < GraphTraceLen; i++) { | |
1856 | GraphBuffer[start+i] = GraphBuffer[stop+i]; | |
1857 | } | |
1858 | return 0; | |
1859 | } | |
1860 | ||
1861 | ||
1862 | int CmdNorm(const char *Cmd) | |
1863 | { | |
1864 | int i; | |
1865 | int max = INT_MIN, min = INT_MAX; | |
1866 | ||
1867 | for (i = 10; i < GraphTraceLen; ++i) { | |
1868 | if (GraphBuffer[i] > max) | |
1869 | max = GraphBuffer[i]; | |
1870 | if (GraphBuffer[i] < min) | |
1871 | min = GraphBuffer[i]; | |
1872 | } | |
1873 | ||
1874 | if (max != min) { | |
1875 | for (i = 0; i < GraphTraceLen; ++i) { | |
1876 | GraphBuffer[i] = (GraphBuffer[i] - ((max + min) / 2)) * 256 / | |
1877 | (max - min); | |
1878 | //marshmelow: adjusted *1000 to *256 to make +/- 128 so demod commands still work | |
1879 | } | |
1880 | } | |
1881 | RepaintGraphWindow(); | |
1882 | return 0; | |
1883 | } | |
1884 | ||
1885 | int CmdPlot(const char *Cmd) | |
1886 | { | |
1887 | ShowGraphWindow(); | |
1888 | return 0; | |
1889 | } | |
1890 | ||
1891 | int CmdSave(const char *Cmd) | |
1892 | { | |
1893 | char filename[FILE_PATH_SIZE] = {0x00}; | |
1894 | int len = 0; | |
1895 | ||
1896 | len = strlen(Cmd); | |
1897 | if (len > FILE_PATH_SIZE) len = FILE_PATH_SIZE; | |
1898 | memcpy(filename, Cmd, len); | |
1899 | ||
1900 | ||
1901 | FILE *f = fopen(filename, "w"); | |
1902 | if(!f) { | |
1903 | PrintAndLog("couldn't open '%s'", filename); | |
1904 | return 0; | |
1905 | } | |
1906 | int i; | |
1907 | for (i = 0; i < GraphTraceLen; i++) { | |
1908 | fprintf(f, "%d\n", GraphBuffer[i]); | |
1909 | } | |
1910 | fclose(f); | |
1911 | PrintAndLog("saved to '%s'", Cmd); | |
1912 | return 0; | |
1913 | } | |
1914 | ||
1915 | int CmdScale(const char *Cmd) | |
1916 | { | |
1917 | CursorScaleFactor = atoi(Cmd); | |
1918 | if (CursorScaleFactor == 0) { | |
1919 | PrintAndLog("bad, can't have zero scale"); | |
1920 | CursorScaleFactor = 1; | |
1921 | } | |
1922 | RepaintGraphWindow(); | |
1923 | return 0; | |
1924 | } | |
1925 | ||
1926 | int CmdDirectionalThreshold(const char *Cmd) | |
1927 | { | |
1928 | int8_t upThres = param_get8(Cmd, 0); | |
1929 | int8_t downThres = param_get8(Cmd, 1); | |
1930 | ||
1931 | printf("Applying Up Threshold: %d, Down Threshold: %d\n", upThres, downThres); | |
1932 | ||
1933 | int lastValue = GraphBuffer[0]; | |
1934 | GraphBuffer[0] = 0; // Will be changed at the end, but init 0 as we adjust to last samples value if no threshold kicks in. | |
1935 | ||
1936 | for (int i = 1; i < GraphTraceLen; ++i) { | |
1937 | // Apply first threshold to samples heading up | |
1938 | if (GraphBuffer[i] >= upThres && GraphBuffer[i] > lastValue) | |
1939 | { | |
1940 | lastValue = GraphBuffer[i]; // Buffer last value as we overwrite it. | |
1941 | GraphBuffer[i] = 127; | |
1942 | } | |
1943 | // Apply second threshold to samples heading down | |
1944 | else if (GraphBuffer[i] <= downThres && GraphBuffer[i] < lastValue) | |
1945 | { | |
1946 | lastValue = GraphBuffer[i]; // Buffer last value as we overwrite it. | |
1947 | GraphBuffer[i] = -127; | |
1948 | } | |
1949 | else | |
1950 | { | |
1951 | lastValue = GraphBuffer[i]; // Buffer last value as we overwrite it. | |
1952 | GraphBuffer[i] = GraphBuffer[i-1]; | |
1953 | ||
1954 | } | |
1955 | } | |
1956 | GraphBuffer[0] = GraphBuffer[1]; // Aline with first edited sample. | |
1957 | RepaintGraphWindow(); | |
1958 | return 0; | |
1959 | } | |
1960 | ||
1961 | int CmdZerocrossings(const char *Cmd) | |
1962 | { | |
1963 | // Zero-crossings aren't meaningful unless the signal is zero-mean. | |
1964 | CmdHpf(""); | |
1965 | ||
1966 | int sign = 1; | |
1967 | int zc = 0; | |
1968 | int lastZc = 0; | |
1969 | ||
1970 | for (int i = 0; i < GraphTraceLen; ++i) { | |
1971 | if (GraphBuffer[i] * sign >= 0) { | |
1972 | // No change in sign, reproduce the previous sample count. | |
1973 | zc++; | |
1974 | GraphBuffer[i] = lastZc; | |
1975 | } else { | |
1976 | // Change in sign, reset the sample count. | |
1977 | sign = -sign; | |
1978 | GraphBuffer[i] = lastZc; | |
1979 | if (sign > 0) { | |
1980 | lastZc = zc; | |
1981 | zc = 0; | |
1982 | } | |
1983 | } | |
1984 | } | |
1985 | ||
1986 | RepaintGraphWindow(); | |
1987 | return 0; | |
1988 | } | |
1989 | ||
1990 | int usage_data_bin2hex(){ | |
1991 | PrintAndLog("Usage: data bin2hex <binary_digits>"); | |
1992 | PrintAndLog(" This function will ignore all characters not 1 or 0 (but stop reading on whitespace)"); | |
1993 | return 0; | |
1994 | } | |
1995 | ||
1996 | /** | |
1997 | * @brief Utility for conversion via cmdline. | |
1998 | * @param Cmd | |
1999 | * @return | |
2000 | */ | |
2001 | int Cmdbin2hex(const char *Cmd) | |
2002 | { | |
2003 | int bg =0, en =0; | |
2004 | if(param_getptr(Cmd, &bg, &en, 0)) | |
2005 | { | |
2006 | return usage_data_bin2hex(); | |
2007 | } | |
2008 | //Number of digits supplied as argument | |
2009 | size_t length = en - bg +1; | |
2010 | size_t bytelen = (length+7) / 8; | |
2011 | uint8_t* arr = (uint8_t *) malloc(bytelen); | |
2012 | memset(arr, 0, bytelen); | |
2013 | BitstreamOut bout = { arr, 0, 0 }; | |
2014 | ||
2015 | for(; bg <= en ;bg++) | |
2016 | { | |
2017 | char c = Cmd[bg]; | |
2018 | if( c == '1') pushBit(&bout, 1); | |
2019 | else if( c == '0') pushBit(&bout, 0); | |
2020 | else PrintAndLog("Ignoring '%c'", c); | |
2021 | } | |
2022 | ||
2023 | if(bout.numbits % 8 != 0) | |
2024 | { | |
2025 | printf("[padded with %d zeroes]\n", 8-(bout.numbits % 8)); | |
2026 | } | |
2027 | ||
2028 | //Uses printf instead of PrintAndLog since the latter | |
2029 | // adds linebreaks to each printout - this way was more convenient since we don't have to | |
2030 | // allocate a string and write to that first... | |
2031 | for(size_t x = 0; x < bytelen ; x++) | |
2032 | { | |
2033 | printf("%02X", arr[x]); | |
2034 | } | |
2035 | printf("\n"); | |
2036 | free(arr); | |
2037 | return 0; | |
2038 | } | |
2039 | ||
2040 | int usage_data_hex2bin() { | |
2041 | PrintAndLog("Usage: data hex2bin <hex_digits>"); | |
2042 | PrintAndLog(" This function will ignore all non-hexadecimal characters (but stop reading on whitespace)"); | |
2043 | return 0; | |
2044 | ||
2045 | } | |
2046 | ||
2047 | int Cmdhex2bin(const char *Cmd) | |
2048 | { | |
2049 | int bg =0, en =0; | |
2050 | if(param_getptr(Cmd, &bg, &en, 0)) | |
2051 | { | |
2052 | return usage_data_hex2bin(); | |
2053 | } | |
2054 | ||
2055 | ||
2056 | while(bg <= en ) | |
2057 | { | |
2058 | char x = Cmd[bg++]; | |
2059 | // capitalize | |
2060 | if (x >= 'a' && x <= 'f') | |
2061 | x -= 32; | |
2062 | // convert to numeric value | |
2063 | if (x >= '0' && x <= '9') | |
2064 | x -= '0'; | |
2065 | else if (x >= 'A' && x <= 'F') | |
2066 | x -= 'A' - 10; | |
2067 | else | |
2068 | continue; | |
2069 | ||
2070 | //Uses printf instead of PrintAndLog since the latter | |
2071 | // adds linebreaks to each printout - this way was more convenient since we don't have to | |
2072 | // allocate a string and write to that first... | |
2073 | ||
2074 | for(int i= 0 ; i < 4 ; ++i) | |
2075 | printf("%d",(x >> (3 - i)) & 1); | |
2076 | } | |
2077 | printf("\n"); | |
2078 | ||
2079 | return 0; | |
2080 | } | |
2081 | ||
2082 | static command_t CommandTable[] = | |
2083 | { | |
2084 | {"help", CmdHelp, 1, "This help"}, | |
2085 | {"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)"}, | |
2086 | {"askgproxiidemod", CmdG_Prox_II_Demod, 1, "Demodulate a G Prox II tag from GraphBuffer"}, | |
2087 | {"askvikingdemod", CmdVikingDemod, 1, "Demodulate a Viking tag from GraphBuffer"}, | |
2088 | {"autocorr", CmdAutoCorr, 1, "[window length] [g] -- Autocorrelation over window - g to save back to GraphBuffer (overwrite)"}, | |
2089 | {"biphaserawdecode",CmdBiphaseDecodeRaw,1, "[offset] [invert<0|1>] [maxErr] -- Biphase decode bin stream in DemodBuffer (offset = 0|1 bits to shift the decode start)"}, | |
2090 | {"bin2hex", Cmdbin2hex, 1, "bin2hex <digits> -- Converts binary to hexadecimal"}, | |
2091 | {"bitsamples", CmdBitsamples, 0, "Get raw samples as bitstring"}, | |
2092 | {"buffclear", CmdBuffClear, 1, "Clear sample buffer and graph window"}, | |
2093 | {"dec", CmdDec, 1, "Decimate samples"}, | |
2094 | {"detectclock", CmdDetectClockRate, 1, "[modulation] Detect clock rate of wave in GraphBuffer (options: 'a','f','n','p' for ask, fsk, nrz, psk respectively)"}, | |
2095 | {"fdxbdemod", CmdFDXBdemodBI , 1, "Demodulate a FDX-B ISO11784/85 Biphase tag from GraphBuffer"}, | |
2096 | //{"fskfcdetect", CmdFSKfcDetect, 1, "Try to detect the Field Clock of an FSK wave"}, | |
2097 | {"fskiodemod", CmdFSKdemodIO, 1, "Demodulate an IO Prox FSK tag from GraphBuffer"}, | |
2098 | {"fskpyramiddemod", CmdFSKdemodPyramid, 1, "Demodulate a Pyramid FSK tag from GraphBuffer"}, | |
2099 | {"fskparadoxdemod", CmdFSKdemodParadox, 1, "Demodulate a Paradox FSK tag from GraphBuffer"}, | |
2100 | {"getbitstream", CmdGetBitStream, 1, "Convert GraphBuffer's >=1 values to 1 and <1 to 0"}, | |
2101 | {"grid", CmdGrid, 1, "<x> <y> -- overlay grid on graph window, use zero value to turn off either"}, | |
2102 | {"hexsamples", CmdHexsamples, 0, "<bytes> [<offset>] -- Dump big buffer as hex bytes"}, | |
2103 | {"hex2bin", Cmdhex2bin, 1, "hex2bin <hexadecimal> -- Converts hexadecimal to binary"}, | |
2104 | {"hide", CmdHide, 1, "Hide graph window"}, | |
2105 | {"hpf", CmdHpf, 1, "Remove DC offset from trace"}, | |
2106 | {"load", CmdLoad, 1, "<filename> -- Load trace (to graph window"}, | |
2107 | {"ltrim", CmdLtrim, 1, "<samples> -- Trim samples from left of trace"}, | |
2108 | {"rtrim", CmdRtrim, 1, "<location to end trace> -- Trim samples from right of trace"}, | |
2109 | {"mtrim", CmdMtrim, 1, "<start> <stop> -- Trim out samples from the specified start to the specified stop"}, | |
2110 | {"manrawdecode", Cmdmandecoderaw, 1, "[invert] [maxErr] -- Manchester decode binary stream in DemodBuffer"}, | |
2111 | {"norm", CmdNorm, 1, "Normalize max/min to +/-128"}, | |
2112 | {"plot", CmdPlot, 1, "Show graph window (hit 'h' in window for keystroke help)"}, | |
2113 | {"printdemodbuffer",CmdPrintDemodBuff, 1, "[x] [o] <offset> [l] <length> -- print the data in the DemodBuffer - 'x' for hex output"}, | |
2114 | {"pskindalademod", CmdIndalaDecode, 1, "[clock] [invert<0|1>] -- Demodulate an indala tag (PSK1) from GraphBuffer (args optional)"}, | |
2115 | {"psknexwatchdemod",CmdPSKNexWatch, 1, "Demodulate a NexWatch tag (nexkey, quadrakey) (PSK1) from GraphBuffer"}, | |
2116 | {"rawdemod", CmdRawDemod, 1, "[modulation] ... <options> -see help (h option) -- Demodulate the data in the GraphBuffer and output binary"}, | |
2117 | {"samples", CmdSamples, 0, "[512 - 40000] -- Get raw samples for graph window (GraphBuffer)"}, | |
2118 | {"save", CmdSave, 1, "<filename> -- Save trace (from graph window)"}, | |
2119 | {"setgraphmarkers", CmdSetGraphMarkers, 1, "[orange_marker] [blue_marker] (in graph window)"}, | |
2120 | {"scale", CmdScale, 1, "<int> -- Set cursor display scale"}, | |
2121 | {"setdebugmode", CmdSetDebugMode, 1, "<0|1|2> -- Turn on or off Debugging Level for lf demods"}, | |
2122 | {"shiftgraphzero", CmdGraphShiftZero, 1, "<shift> -- Shift 0 for Graphed wave + or - shift value"}, | |
2123 | {"dirthreshold", CmdDirectionalThreshold, 1, "<thres up> <thres down> -- Max rising higher up-thres/ Min falling lower down-thres, keep rest as prev."}, | |
2124 | {"tune", CmdTuneSamples, 0, "Get hw tune samples for graph window"}, | |
2125 | {"undec", CmdUndec, 1, "Un-decimate samples by 2"}, | |
2126 | {"zerocrossings", CmdZerocrossings, 1, "Count time between zero-crossings"}, | |
2127 | {NULL, NULL, 0, NULL} | |
2128 | }; | |
2129 | ||
2130 | int CmdData(const char *Cmd) | |
2131 | { | |
2132 | CmdsParse(CommandTable, Cmd); | |
2133 | return 0; | |
2134 | } | |
2135 | ||
2136 | int CmdHelp(const char *Cmd) | |
2137 | { | |
2138 | CmdsHelp(CommandTable); | |
2139 | return 0; | |
2140 | } |