- uint8_t got[3000];
- GetFromBigBuf(got,sizeof(got),0);
-
- PrintAndLog("recorded activity:");
- PrintAndLog(" ETU :rssi: who bytes");
- PrintAndLog("---------+----+----+-----------");
-
- int i = 0;
- int prev = -1;
-
- for (;;) {
- if(i >= 1900) {
- break;
- }
-
- bool isResponse;
- int timestamp = *((uint32_t *)(got+i));
- if (timestamp & 0x80000000) {
- timestamp &= 0x7fffffff;
- isResponse = 1;
- } else {
- isResponse = 0;
- }
-
- int metric = 0;
- int parityBits = *((uint32_t *)(got+i+4));
- // 4 bytes of additional information...
- // maximum of 32 additional parity bit information
- //
- // TODO:
- // at each quarter bit period we can send power level (16 levels)
- // or each half bit period in 256 levels.
-
- int len = got[i+8];
-
- if (len > 100) {
- break;
- }
- if (i + len >= 1900) {
- break;
- }
-
- uint8_t *frame = (got+i+9);
-
- // Break and stick with current result if buffer was not completely full
- if (frame[0] == 0x44 && frame[1] == 0x44 && frame[3] == 0x44) { break; }
-
- char line[1000] = "";
- int j;
- for (j = 0; j < len; j++) {
- int oddparity = 0x01;
- int k;
-
- for (k=0;k<8;k++) {
- oddparity ^= (((frame[j] & 0xFF) >> k) & 0x01);
- }
-
- //if((parityBits >> (len - j - 1)) & 0x01) {
- if (isResponse && (oddparity != ((parityBits >> (len - j - 1)) & 0x01))) {
- sprintf(line+(j*4), "%02x! ", frame[j]);
- }
- else {
- sprintf(line+(j*4), "%02x ", frame[j]);
- }
- }
-
- char metricString[100];
- if (isResponse) {
- sprintf(metricString, "%3d", metric);
- } else {
- strcpy(metricString, " ");
- }
-
- PrintAndLog(" +%7d: %s: %s %s",
- (prev < 0 ? 0 : (timestamp - prev)),
- metricString,
- (isResponse ? "TAG" : " "),
- line);
-
- prev = timestamp;
- i += (len + 9);
- }
+ uint8_t *got = malloc(USB_CMD_DATA_SIZE);
+ // Query for the actual size of the trace
+ UsbCommand response;
+ GetFromBigBuf(got, USB_CMD_DATA_SIZE, 0, &response, -1, false);
+ uint16_t traceLen = response.arg[2];
+ if (traceLen > USB_CMD_DATA_SIZE) {
+ uint8_t *p = realloc(got, traceLen);
+ if (p == NULL) {
+ PrintAndLog("Cannot allocate memory for trace");
+ free(got);
+ return 2;
+ }
+ got = p;
+ GetFromBigBuf(got, traceLen, 0, NULL, -1, false);
+ }
+
+ PrintAndLog("recorded activity (TraceLen = %d bytes):");
+ PrintAndLog(" ETU :nbits: who bytes");
+ PrintAndLog("---------+-----+----+-----------");
+
+ int j;
+ int i = 0;
+ int prev = -1;
+ int len = strlen(Cmd);
+
+ char filename[FILE_PATH_SIZE] = { 0x00 };
+ FILE* pf = NULL;
+
+ if (len > FILE_PATH_SIZE)
+ len = FILE_PATH_SIZE;
+ memcpy(filename, Cmd, len);
+
+ if (strlen(filename) > 0) {
+ if ((pf = fopen(filename,"wb")) == NULL) {
+ PrintAndLog("Error: Could not open file [%s]",filename);
+ free(got);
+ return 1;
+ }
+ }
+
+ for (;;) {
+
+ if(i > traceLen) { break; }
+
+ bool isResponse;
+ int timestamp = *((uint32_t *)(got+i));
+ if (timestamp & 0x80000000) {
+ timestamp &= 0x7fffffff;
+ isResponse = 1;
+ } else {
+ isResponse = 0;
+ }
+
+ int parityBits = *((uint32_t *)(got+i+4));
+ // 4 bytes of additional information...
+ // maximum of 32 additional parity bit information
+ //
+ // TODO:
+ // at each quarter bit period we can send power level (16 levels)
+ // or each half bit period in 256 levels.
+
+ int bits = got[i+8];
+ int len = nbytes(bits);
+
+ if (len > 100) {
+ break;
+ }
+ if (i + len > traceLen) { break;}
+
+ uint8_t *frame = (got+i+9);
+/*
+ int fillupBits = 8 - (bits % 8);
+ byte_t framefilled[bits+fillupBits];
+ byte_t* ff = framefilled;
+
+ int response_bit[200] = {0};
+ int z = 0;
+ for (int y = 0; y < len; y++) {
+ for (j = 0; j < 8; j++) {
+ response_bit[z] = 0;
+ if ((frame[y] & ((mask << 7) >> j)) != 0)
+ response_bit[z] = 1;
+ z++;
+ }
+ }
+ z = 0;
+ for (int y = 0; y < len; y++) {
+ ff[y] = (response_bit[z] << 7) | (response_bit[z + 1] << 6)
+ | (response_bit[z + 2] << 5) | (response_bit[z + 3] << 4)
+ | (response_bit[z + 4] << 3) | (response_bit[z + 5] << 2)
+ | (response_bit[z + 6] << 1) | response_bit[z + 7];
+ z += 8;
+ }
+*/
+
+
+
+
+ // Break and stick with current result if buffer was not completely full
+ if (frame[0] == 0x44 && frame[1] == 0x44 && frame[3] == 0x44) { break; }
+
+ char line[1000] = "";
+ for (j = 0; j < len; j++) {
+ //if((parityBits >> (len - j - 1)) & 0x01) {
+ if (isResponse && (oddparity8(frame[j]) != ((parityBits >> (len - j - 1)) & 0x01))) {
+ sprintf(line+(j*4), "%02x! ", frame[j]);
+ } else {
+ sprintf(line+(j*4), "%02x ", frame[j]);
+ }
+ }
+
+ PrintAndLog(" +%7d: %3d: %s %s",
+ (prev < 0 ? 0 : (timestamp - prev)),
+ bits,
+ (isResponse ? "TAG" : " "),
+ line);
+
+ if (pf) {
+ fprintf(pf," +%7d: %3d: %s %s\n",
+ (prev < 0 ? 0 : (timestamp - prev)),
+ bits,
+ (isResponse ? "TAG" : " "),
+ line);
+ }
+
+ prev = timestamp;
+ i += (len + 9);
+ }
+
+ if (pf) {
+ fclose(pf);
+ PrintAndLog("Recorded activity succesfully written to file: %s", filename);
+ }
+
+ free(got);