X-Git-Url: https://git.zerfleddert.de/cgi-bin/gitweb.cgi/proxmark3-svn/blobdiff_plain/57c695563f1892ed8eb3d8841f70ccce9f01c53d..225ccb910e9de6c38b6d1c81d4fc025d05c13570:/client/cmddata.c diff --git a/client/cmddata.c b/client/cmddata.c index a7b80480..9a19dca7 100644 --- a/client/cmddata.c +++ b/client/cmddata.c @@ -17,44 +17,42 @@ #include "ui.h" #include "graph.h" #include "cmdparser.h" +#include "util.h" #include "cmdmain.h" #include "cmddata.h" +#include "lfdemod.h" static int CmdHelp(const char *Cmd); int CmdAmp(const char *Cmd) { - int i, rising, falling; - int max = INT_MIN, min = INT_MAX; - - for (i = 10; i < GraphTraceLen; ++i) { - if (GraphBuffer[i] > max) - max = GraphBuffer[i]; - if (GraphBuffer[i] < min) - min = GraphBuffer[i]; - } - - if (max != min) { - rising = falling= 0; - for (i = 0; i < GraphTraceLen; ++i) { - if (GraphBuffer[i + 1] < GraphBuffer[i]) { - if (rising) { - GraphBuffer[i] = max; - rising = 0; - } - falling = 1; - } - if (GraphBuffer[i + 1] > GraphBuffer[i]) { - if (falling) { - GraphBuffer[i] = min; - falling = 0; - } - rising= 1; - } - } - } - RepaintGraphWindow(); - return 0; + int i, rising, falling; + int max = INT_MIN, min = INT_MAX; + + DetectHighLowInGraph( &max, &min, FALSE); + + if (max != min) { + rising = falling = 0; + + for (i = 0; i < GraphTraceLen; ++i) { + if (GraphBuffer[i + 1] < GraphBuffer[i]) { + if (rising) { + GraphBuffer[i] = max; + rising = 0; + } + falling = 1; + } + if (GraphBuffer[i + 1] > GraphBuffer[i]) { + if (falling) { + GraphBuffer[i] = min; + falling = 0; + } + rising= 1; + } + } + } + RepaintGraphWindow(); + return 0; } /* @@ -68,54 +66,307 @@ int CmdAmp(const char *Cmd) * Arguments: * c : 0 or 1 */ + //this method is dependant on all highs and lows to be the same(or clipped) this creates issues[marshmellow] it also ignores the clock int Cmdaskdemod(const char *Cmd) { - int i; - int c, high = 0, low = 0; + int i; + int c, high = 0, low = 0; + + sscanf(Cmd, "%i", &c); + + if (c != 0 && c != 1) { + PrintAndLog("Invalid argument: %s", Cmd); + return 0; + } + + DetectHighLowInGraph( &high, &low, FALSE); + + high = abs(high * .75); + low = abs(low * .75); + + //prime loop + if (GraphBuffer[0] > 0) { + GraphBuffer[0] = 1-c; + } else { + GraphBuffer[0] = c; + } + + for (i = 1; i < GraphTraceLen; ++i) { + /* Transitions are detected at each peak + * Transitions are either: + * - we're low: transition if we hit a high + * - we're high: transition if we hit a low + * (we need to do it this way because some tags keep high or + * low for long periods, others just reach the peak and go + * down) + */ + //[marhsmellow] change == to >= for high and <= for low for fuzz + if ((GraphBuffer[i] == high) && (GraphBuffer[i - 1] == c)) { + GraphBuffer[i] = 1 - c; + } else if ((GraphBuffer[i] == low) && (GraphBuffer[i - 1] == (1 - c))){ + GraphBuffer[i] = c; + } else { + /* No transition */ + GraphBuffer[i] = GraphBuffer[i - 1]; + } + } + RepaintGraphWindow(); + return 0; +} - // TODO: complain if we do not give 2 arguments here ! - // (AL - this doesn't make sense! we're only using one argument!!!) - sscanf(Cmd, "%i", &c); +void printBitStream(uint8_t bits[], uint32_t bitLen){ + + uint32_t i = 0; + if (bitLen < 16) { + PrintAndLog("Too few bits found: %d",bitLen); + return; + } + if (bitLen > 512) + bitLen = 512; + + if ( ( bitLen % 16 ) > 0) { + bitLen = ((bitLen / 16) * 16); + PrintAndLog("ICE: equally divided with 16 = %d",bitLen); + } + + for (i = 0; i <= ( bitLen - 16); i += 16) { + PrintAndLog("%i%i%i%i%i%i%i%i%i%i%i%i%i%i%i%i", + bits[i], + bits[i+1], + bits[i+2], + bits[i+3], + bits[i+4], + bits[i+5], + bits[i+6], + bits[i+7], + bits[i+8], + bits[i+9], + bits[i+10], + bits[i+11], + bits[i+12], + bits[i+13], + bits[i+14], + bits[i+15]); + } + return; +} - /* Detect high and lows and clock */ - // (AL - clock???) - for (i = 0; i < GraphTraceLen; ++i) - { - if (GraphBuffer[i] > high) - high = GraphBuffer[i]; - else if (GraphBuffer[i] < low) - low = GraphBuffer[i]; - } - if (c != 0 && c != 1) { - PrintAndLog("Invalid argument: %s", Cmd); - return 0; - } +void printEM410x(uint64_t id) { + + if ( id <= 0 ) return; + + uint64_t id2lo = 0; + uint32_t i,j; + i = j = 0; + + for (j = 5; j > 0; j--){ + for (i = 0; i < 8; i++){ + id2lo = ( id2lo << 1LL)|((id & ( 1 << ( i +( ( j-1 ) * 8 )))) >> ( i + (( j-1) *8 ))); + } + } + //output em id + PrintAndLog("EM TAG ID : %010llx", id); + PrintAndLog("Unique TAG ID: %010llx", id2lo); + PrintAndLog("DEZ 8 : %08lld", id & 0xFFFFFF); + PrintAndLog("DEZ 10 : %010lld", id & 0xFFFFFF); + PrintAndLog("DEZ 5.5 : %05lld.%05lld", (id>>16LL) & 0xFFFF, (id & 0xFFFF)); + PrintAndLog("DEZ 3.5A : %03lld.%05lld", (id>>32ll), (id & 0xFFFF)); + PrintAndLog("DEZ 14/IK2 : %014lld", id); + PrintAndLog("DEZ 15/IK3 : %015lld", id2lo); + PrintAndLog("Other : %05lld_%03lld_%08lld", (id & 0xFFFF), (( id >> 16LL) & 0xFF), (id & 0xFFFFFF)); +} - if (GraphBuffer[0] > 0) { - GraphBuffer[0] = 1-c; - } else { - GraphBuffer[0] = c; - } - for (i = 1; i < GraphTraceLen; ++i) { - /* Transitions are detected at each peak - * Transitions are either: - * - we're low: transition if we hit a high - * - we're high: transition if we hit a low - * (we need to do it this way because some tags keep high or - * low for long periods, others just reach the peak and go - * down) - */ - if ((GraphBuffer[i] == high) && (GraphBuffer[i - 1] == c)) { - GraphBuffer[i] = 1 - c; - } else if ((GraphBuffer[i] == low) && (GraphBuffer[i - 1] == (1 - c))){ - GraphBuffer[i] = c; - } else { - /* No transition */ - GraphBuffer[i] = GraphBuffer[i - 1]; - } - } - RepaintGraphWindow(); - return 0; +int CmdEm410xDecode(const char *Cmd) +{ + uint64_t id = 0; + uint8_t bits[MAX_GRAPH_TRACE_LEN] = {0x00}; + uint32_t len = GetFromGraphBuf(bits); + id = Em410xDecode(bits, len); + printEM410x(id); + if ( id > 0 ) + return 1; + return 0; +} + +//by marshmellow +//takes 2 arguments - clock and invert both as integers +//attempts to demodulate ask while decoding manchester +//prints binary found and saves in graphbuffer for further commands +int Cmdaskmandemod(const char *Cmd) +{ + int invert = 0; + int clk = 0; + + sscanf(Cmd, "%i %i", &clk, &invert); + + if (invert != 0 && invert != 1) { + PrintAndLog("Invalid argument: %s", Cmd); + return 0; + } + + uint8_t bits[MAX_GRAPH_TRACE_LEN] = {0x00}; + uint32_t len = GetFromGraphBuf(bits); + + int errCnt = askmandemod(bits, &len, &clk, &invert); + + if (errCnt < 0) return 0; + if (len < 16) return 0; + + PrintAndLog("\nUsing Clock: %d - Invert: %d - Bits Found: %d",clk,invert,len); + + if (errCnt > 0){ + PrintAndLog("# Errors during Demoding (shown as 77 in bit stream): %d",errCnt); + } + + PrintAndLog("ASK/Manchester decoded bitstream:"); + + printBitStream(bits, len); + + uint64_t tagid = Em410xDecode(bits, len); + + if (tagid > 0){ + SetGraphBuf(bits, len); + printEM410x(tagid); + return 1; + } + return 0; +} + +//by marshmellow +//manchester decode +//stricktly take 10 and 01 and convert to 0 and 1 +int Cmdmandecoderaw(const char *Cmd) +{ + int i = 0; + int errCnt = 0; + int bitnum = 0; + uint8_t bits[MAX_GRAPH_TRACE_LEN] = {0x00}; + int high = 0, low = 0; + + for (; i < GraphTraceLen; ++i){ + if (GraphBuffer[i] > high) high = GraphBuffer[i]; + else if (GraphBuffer[i] < low) low = GraphBuffer[i]; + bits[i] = GraphBuffer[i]; + } + + if (high > 1 || low < 0 ){ + PrintAndLog("Error: please raw demod the wave first then mancheseter raw decode"); + return 0; + } + + bitnum = i; + errCnt = manrawdecode(bits, &bitnum); + + if (errCnt>=20){ + PrintAndLog("Too many errors: %d",errCnt); + return 0; + } + + PrintAndLog("Manchester Decoded - # errors:%d - data:",errCnt); + printBitStream(bits,bitnum); + + if (errCnt==0){ + //put back in graphbuffer + SetGraphBuf(bits, bitnum); + + uint64_t id = Em410xDecode(bits,i); + printEM410x(id); + } + return 1; +} + +//by marshmellow +//biphase decode +//take 01 or 10 = 0 and 11 or 00 = 1 +//takes 1 argument "offset" default = 0 if 1 it will shift the decode by one bit +// since it is not like manchester and doesn't have an incorrect bit pattern we +// cannot determine if our decode is correct or if it should be shifted by one bit +// the argument offset allows us to manually shift if the output is incorrect +// (better would be to demod and decode at the same time so we can distinguish large +// width waves vs small width waves to help the decode positioning) or askbiphdemod +int CmdBiphaseDecodeRaw(const char *Cmd) +{ + int i = 0; + int errCnt = 0; + int bitnum = 0; + int offset = 0; + int high = 0, low = 0; + sscanf(Cmd, "%i", &offset); + + uint8_t bits[MAX_GRAPH_TRACE_LEN]={0}; + + //get graphbuffer & high and low + for (; i high) high = GraphBuffer[i]; + else if (GraphBuffer[i] < low) low = GraphBuffer[i]; + bits[i] = GraphBuffer[i]; + } + if (high > 1 || low < 0){ + PrintAndLog("Error: please raw demod the wave first then decode"); + return 0; + } + bitnum = i; + errCnt = BiphaseRawDecode(bits, &bitnum, offset); + if (errCnt >= 20){ + PrintAndLog("Too many errors attempting to decode: %d", errCnt); + return 0; + } + PrintAndLog("Biphase Decoded using offset: %d - # errors:%d - data:", offset, errCnt); + printBitStream(bits, bitnum); + PrintAndLog("\nif bitstream does not look right try offset=1"); + return 1; +} + + +//by marshmellow +//takes 2 arguments - clock and invert both as integers +//attempts to demodulate ask only +//prints binary found and saves in graphbuffer for further commands +int Cmdaskrawdemod(const char *Cmd) +{ + int invert = 0; + int clk = 0; + + sscanf(Cmd, "%i %i", &clk, &invert); + + if (invert != 0 && invert != 1 ) { + PrintAndLog("Invalid argument: %s", Cmd); + return 0; + } + + if ( clock < 0 ) { + PrintAndLog("Wrong clock argument"); + return 0; + } + + uint8_t bits[MAX_GRAPH_TRACE_LEN] = {0x00}; + int len = GetFromGraphBuf(bits); + int errCnt = 0; + + errCnt = askrawdemod(bits, &len, &clk, &invert); + + //throw away static - allow 1 and -1 (in case of threshold command first) + if (errCnt == -1) { + PrintAndLog("no data found"); + return 0; + } + + if (len < 16) return 0; + + PrintAndLog("Using Clock: %d - invert: %d - Bits Found: %d",clk,invert,len); + + //move BitStream back to GraphBuffer + SetGraphBuf(bits, len); + + if (errCnt > 0){ + PrintAndLog("# Errors during Demoding (shown as 77 in bit stream): %d",errCnt); + } + + PrintAndLog("ASK demoded bitstream:"); + + // Now output the bitstream to the scrollback by line of 16 bits + printBitStream(bits,len); + return 1; } int CmdAutoCorr(const char *Cmd) @@ -153,7 +404,7 @@ int CmdAutoCorr(const char *Cmd) int CmdBitsamples(const char *Cmd) { int cnt = 0; - uint8_t got[12288]; + uint8_t got[10000]; GetFromBigBuf(got,sizeof(got),0); WaitForResponse(CMD_ACK,NULL); @@ -186,16 +437,10 @@ int CmdBitstream(const char *Cmd) int hithigh, hitlow, first; /* Detect high and lows and clock */ - for (i = 0; i < GraphTraceLen; ++i) - { - if (GraphBuffer[i] > high) - high = GraphBuffer[i]; - else if (GraphBuffer[i] < low) - low = GraphBuffer[i]; - } + DetectHighLowInGraph( &high, &low, FALSE); /* Get our clock */ - clock = GetClock(Cmd, high, 1); + clock = GetClock(Cmd, 0); gtl = ClearGraph(0); bit = 0; @@ -227,10 +472,6 @@ int CmdBitstream(const char *Cmd) bit ^= 1; AppendGraph(0, clock, bit); -// for (j = 0; j < (int)(clock/2); j++) -// GraphBuffer[(i * clock) + j] = bit ^ 1; -// for (j = (int)(clock/2); j < clock; j++) -// GraphBuffer[(i * clock) + j] = bit; } RepaintGraphWindow(); @@ -256,14 +497,223 @@ int CmdDec(const char *Cmd) } /* Print our clock rate */ +// uses data from graphbuffer int CmdDetectClockRate(const char *Cmd) { - int clock = DetectClock(0); - PrintAndLog("Auto-detected clock rate: %d", clock); + GetClock("",1); + return 0; +} + +//by marshmellow +//fsk raw demod and print binary +//takes 4 arguments - Clock, invert, rchigh, rclow +//defaults: clock = 50, invert=0, rchigh=10, rclow=8 (RF/10 RF/8 (fsk2a)) +int CmdFSKrawdemod(const char *Cmd) +{ + //raw fsk demod no manchester decoding no start bit finding just get binary from wave + int rfLen = 50; + int invert = 0; + int fchigh = 10; + int fclow = 8; + + //set options from parameters entered with the command + sscanf(Cmd, "%i %i %i %i", &rfLen, &invert, &fchigh, &fclow); + + // A lots of checks if chigh, clow is out-of bounds. + + if (strlen(Cmd)>0 && strlen(Cmd)<=2) { + + rfLen = 50; + + //if invert option only is used + if (rfLen == 1){ + invert=1; + } + } + + PrintAndLog("Args invert: %d - Clock:%d - FC high:%d - FC low: %d",invert,rfLen,fchigh, fclow); + + uint8_t bits[MAX_GRAPH_TRACE_LEN] = {0x00}; + uint32_t len = GetFromGraphBuf(bits); + + int size = fskdemod(bits, len,(uint8_t)rfLen, (uint8_t)invert, (uint8_t)fchigh, (uint8_t)fclow); + + if (size > 0) { + PrintAndLog("FSK decoded bitstream:"); + + SetGraphBuf(bits, size); + + // Now output the bitstream to the scrollback by line of 16 bits + // only output a max of 8 blocks of 32 bits most tags will have full bit stream inside that sample size + if(size > (8*32)+2) + size = (8*32)+2; + printBitStream(bits,size); + } else { + PrintAndLog("no FSK data found"); + } + return 0; +} + +//by marshmellow (based on existing demod + holiman's refactor) +//HID Prox demod - FSK RF/50 with preamble of 00011101 (then manchester encoded) +//print full HID Prox ID and some bit format details if found +int CmdFSKdemodHID(const char *Cmd) +{ + //raw fsk demod no manchester decoding no start bit finding just get binary from wave + uint32_t hi2=0, hi=0, lo=0; + + uint8_t BitStream[MAX_GRAPH_TRACE_LEN] = {0x00}; + uint32_t BitLen = GetFromGraphBuf(BitStream); + + //get binary from fsk wave + size_t size = HIDdemodFSK(BitStream,BitLen,&hi2,&hi,&lo); + + if (size < 0){ + PrintAndLog("Error demoding fsk"); + return 0; + } + + if (hi2==0 && hi==0 && lo==0) return 0; + + //extra large HID tags + if (hi2 != 0){ + PrintAndLog("TAG ID: %x%08x%08x (%d)", + (unsigned int) hi2, + (unsigned int) hi, + (unsigned int) lo, + (unsigned int) (lo>>1) & 0xFFFF); + SetGraphBuf(BitStream,BitLen); + return 1; + } else { + //standard HID tags <38 bits + uint8_t fmtLen = 0; + uint32_t fc = 0; + uint32_t cardnum = 0; + + //if bit 38 is set then < 37 bit format is used + if (((hi>>5) & 1)==1){ + uint32_t lo2 = 0; + + //get bits 21-37 to check for format len bit + lo2 = (((hi & 15) << 12) | (lo>>20)); + uint8_t idx3 = 1; + + //find last bit set to 1 (format len bit) + while( lo2 > 1){ + lo2=lo2>>1; + idx3++; + } + fmtLen = idx3 + 19; + fc = 0; + cardnum = 0; + + if(fmtLen==26){ + cardnum = (lo>>1)&0xFFFF; + fc = (lo>>17)&0xFF; + } + if(fmtLen==37){ + cardnum = (lo>>1)&0x7FFFF; + fc = ((hi&0xF)<<12)|(lo>>20); + } + if(fmtLen==34){ + cardnum = (lo>>1)&0xFFFF; + fc= ((hi&1)<<15)|(lo>>17); + } + if(fmtLen==35){ + cardnum = (lo>>1)&0xFFFFF; + fc = ((hi&1)<<11)|(lo>>21); + } + } else { + //if bit 38 is not set then 37 bit format is used + fmtLen= 37; + fc =0; + cardnum=0; + + if (fmtLen==37){ + cardnum = (lo>>1) & 0x7FFFF; + fc = ((hi&0xF) << 12) | (lo >> 20); + } + } + PrintAndLog("TAG ID: %x%08x (%d) - Format Len: %dbit - FC: %d - Card: %d", + (unsigned int) hi, + (unsigned int) lo, + (unsigned int) (lo>>1) & 0xFFFF, + (unsigned int) fmtLen, + (unsigned int) fc, + (unsigned int) cardnum); + SetGraphBuf(BitStream,BitLen); + return 1; + } return 0; } -int CmdFSKdemod(const char *Cmd) +//by marshmellow +//IO-Prox demod - FSK RF/64 with preamble of 000000001 +//print ioprox ID and some format details +int CmdFSKdemodIO(const char *Cmd) +{ + if (GraphTraceLen < 65) { + PrintAndLog("data samples size is too small"); + return 0; + } + + //raw fsk demod no manchester decoding no start bit finding just get binary from wave + //set defaults + int idx = 0; + uint8_t bits[MAX_GRAPH_TRACE_LEN] = {0x00}; + uint32_t bitlen = GetFromGraphBuf(bits); + + //get binary from fsk wave + idx = IOdemodFSK(bits, bitlen); + + if (idx == 0) { + return 0; + } + if (idx == -1) { + PrintAndLog("data samples size is too small"); + return 0; + } + if (idx == -2) { + PrintAndLog("Data samples has too much noice"); + return 0; + } + if (idx == -3){ + PrintAndLog("No good demod"); + return 0; + } + + if (idx+64 > bitlen) return 0; + + //Index map + //0 10 20 30 40 50 60 + //| | | | | | | + //01234567 8 90123456 7 89012345 6 78901234 5 67890123 4 56789012 3 45678901 23 + //----------------------------------------------------------------------------- + //00000000 0 11110000 1 facility 1 version* 1 code*one 1 code*two 1 ???????? 11 + // + //XSF(version)facility:codeone+codetwo (raw) + //Handle the data + + PrintAndLog("%d%d%d%d%d%d%d%d %d", bits[idx] , bits[idx+1], bits[idx+2], bits[idx+3], bits[idx+4], bits[idx+5], bits[idx+6], bits[idx+7], bits[idx+8]); + PrintAndLog("%d%d%d%d%d%d%d%d %d", bits[idx+9] , bits[idx+10], bits[idx+11], bits[idx+12], bits[idx+13], bits[idx+14], bits[idx+15], bits[idx+16], bits[idx+17]); + PrintAndLog("%d%d%d%d%d%d%d%d %d facility", bits[idx+18], bits[idx+19], bits[idx+20], bits[idx+21], bits[idx+22], bits[idx+23], bits[idx+24], bits[idx+25], bits[idx+26]); + PrintAndLog("%d%d%d%d%d%d%d%d %d version", bits[idx+27], bits[idx+28], bits[idx+29], bits[idx+30], bits[idx+31], bits[idx+32], bits[idx+33], bits[idx+34], bits[idx+35]); + PrintAndLog("%d%d%d%d%d%d%d%d %d code1", bits[idx+36], bits[idx+37], bits[idx+38], bits[idx+39], bits[idx+40], bits[idx+41], bits[idx+42], bits[idx+43], bits[idx+44]); + PrintAndLog("%d%d%d%d%d%d%d%d %d code2", bits[idx+45], bits[idx+46], bits[idx+47], bits[idx+48], bits[idx+49], bits[idx+50], bits[idx+51], bits[idx+52], bits[idx+53]); + PrintAndLog("%d%d%d%d%d%d%d%d %d%d checksum", bits[idx+54], bits[idx+55], bits[idx+56], bits[idx+57], bits[idx+58], bits[idx+59], bits[idx+60], bits[idx+61], bits[idx+62], bits[idx+63]); + + uint32_t code = bytebits_to_byte(bits+idx,32); + uint32_t code2 = bytebits_to_byte(bits+idx+32,32); + uint8_t version = bytebits_to_byte(bits+idx+27,8); //14,4 + uint8_t facilitycode = bytebits_to_byte(bits+idx+18,8) ; + uint16_t number = (bytebits_to_byte(bits+idx+36,8)<<8)|(bytebits_to_byte(bits+idx+45,8)); //36,9 + + PrintAndLog("XSF(%02d)%02x:%05d (%08x%08x)", version, facilitycode, number, code, code2); + SetGraphBuf(bits, bitlen); + return 1; +} + +int CmdFSKdemod(const char *Cmd) //old CmdFSKdemod needs updating { static const int LowTone[] = { 1, 1, 1, 1, 1, -1, -1, -1, -1, -1, @@ -320,7 +770,7 @@ int CmdFSKdemod(const char *Cmd) GraphTraceLen -= (convLen + 16); RepaintGraphWindow(); - // Find bit-sync (3 lo followed by 3 high) + // Find bit-sync (3 lo followed by 3 high) (HID ONLY) int max = 0, maxPos = 0; for (i = 0; i < 6000; ++i) { int dec = 0; @@ -349,8 +799,7 @@ int CmdFSKdemod(const char *Cmd) PrintAndLog("actual data bits start at sample %d", maxPos); PrintAndLog("length %d/%d", highLen, lowLen); - uint8_t bits[46]; - bits[sizeof(bits)-1] = '\0'; + uint8_t bits[46] = {0x00}; // find bit pairs and manchester decode them for (i = 0; i < arraylen(bits) - 1; ++i) { @@ -457,34 +906,91 @@ int CmdHpf(const char *Cmd) int CmdSamples(const char *Cmd) { - int cnt = 0; - int n; - uint8_t got[40000]; - - n = strtol(Cmd, NULL, 0); - if (n == 0) n = 512; - if (n > sizeof(got)) n = sizeof(got); + uint8_t got[40000] = {0x00}; + + int n = strtol(Cmd, NULL, 0); + if (n == 0) + n = 20000; + + if (n > sizeof(got)) + n = sizeof(got); - PrintAndLog("Reading %d samples\n", n); - GetFromBigBuf(got,n,0); - WaitForResponse(CMD_ACK,NULL); - for (int j = 0; j < n; j++) { - GraphBuffer[cnt++] = ((int)got[j]) - 128; - } + PrintAndLog("Reading %d samples from device memory\n", n); + GetFromBigBuf(got,n,0); + WaitForResponse(CMD_ACK,NULL); + for (int j = 0; j < n; ++j) { + GraphBuffer[j] = ((int)got[j]) - 128; + } + GraphTraceLen = n; + RepaintGraphWindow(); + return 0; +} + +int CmdTuneSamples(const char *Cmd) +{ + int timeout = 0; + printf("\nMeasuring antenna characteristics, please wait..."); + + UsbCommand c = {CMD_MEASURE_ANTENNA_TUNING}; + SendCommand(&c); + + UsbCommand resp; + while(!WaitForResponseTimeout(CMD_MEASURED_ANTENNA_TUNING,&resp,1000)) { + timeout++; + printf("."); + if (timeout > 7) { + PrintAndLog("\nNo response from Proxmark. Aborting..."); + return 1; + } + } + + int peakv, peakf; + int vLf125, vLf134, vHf; + vLf125 = resp.arg[0] & 0xffff; + vLf134 = resp.arg[0] >> 16; + vHf = resp.arg[1] & 0xffff;; + peakf = resp.arg[2] & 0xffff; + peakv = resp.arg[2] >> 16; + PrintAndLog(""); + PrintAndLog("# LF antenna: %5.2f V @ 125.00 kHz", vLf125/1000.0); + PrintAndLog("# LF antenna: %5.2f V @ 134.00 kHz", vLf134/1000.0); + PrintAndLog("# LF optimal: %5.2f V @%9.2f kHz", peakv/1000.0, 12000.0/(peakf+1)); + PrintAndLog("# HF antenna: %5.2f V @ 13.56 MHz", vHf/1000.0); + if (peakv<2000) + PrintAndLog("# Your LF antenna is unusable."); + else if (peakv<10000) + PrintAndLog("# Your LF antenna is marginal."); + if (vHf<2000) + PrintAndLog("# Your HF antenna is unusable."); + else if (vHf<5000) + PrintAndLog("# Your HF antenna is marginal."); + + for (int i = 0; i < 256; i++) { + GraphBuffer[i] = resp.d.asBytes[i] - 128; + } - PrintAndLog("Done!\n"); - GraphTraceLen = n; - RepaintGraphWindow(); + PrintAndLog("Done! Divisor 89 is 134khz, 95 is 125khz.\n"); + PrintAndLog("\n"); + GraphTraceLen = 256; + ShowGraphWindow(); + return 0; } int CmdLoad(const char *Cmd) { - FILE *f = fopen(Cmd, "r"); - if (!f) { - PrintAndLog("couldn't open '%s'", Cmd); - return 0; - } + char filename[FILE_PATH_SIZE] = {0x00}; + int len = 0; + + len = strlen(Cmd); + if (len > FILE_PATH_SIZE) len = FILE_PATH_SIZE; + memcpy(filename, Cmd, len); + + FILE *f = fopen(filename, "r"); + if (!f) { + PrintAndLog("couldn't open '%s'", filename); + return 0; + } GraphTraceLen = 0; char line[80]; @@ -509,6 +1015,15 @@ int CmdLtrim(const char *Cmd) RepaintGraphWindow(); return 0; } +int CmdRtrim(const char *Cmd) +{ + int ds = atoi(Cmd); + + GraphTraceLen = ds; + + RepaintGraphWindow(); + return 0; +} /* * Manchester demodulate a bitstream. The bitstream needs to be already in @@ -555,20 +1070,13 @@ int CmdManchesterDemod(const char *Cmd) /* But it does not work if compiling on WIndows: therefore we just allocate a */ /* large array */ - uint8_t BitStream[MAX_GRAPH_TRACE_LEN]; + uint8_t BitStream[MAX_GRAPH_TRACE_LEN] = {0x00}; /* Detect high and lows */ - for (i = 0; i < GraphTraceLen; i++) - { - if (GraphBuffer[i] > high) - high = GraphBuffer[i]; - else if (GraphBuffer[i] < low) - low = GraphBuffer[i]; - } - + DetectHighLowInGraph( &high, &low, TRUE); + /* Get our clock */ - clock = GetClock(Cmd, high, 1); - + clock = GetClock(Cmd, 0); int tolerance = clock/4; /* Detect first transition */ @@ -586,14 +1094,14 @@ int CmdManchesterDemod(const char *Cmd) break; } } - + /* If we're not working with 1/0s, demod based off clock */ if (high != 1) { bit = 0; /* We assume the 1st bit is zero, it may not be * the case: this routine (I think) has an init problem. * Ed. - */ + */ for (; i < (int)(GraphTraceLen / clock); i++) { hithigh = 0; @@ -673,7 +1181,9 @@ int CmdManchesterDemod(const char *Cmd) // At this stage, we now have a bitstream of "01" ("1") or "10" ("0"), parse it into final decoded bitstream // Actually, we overwrite BitStream with the new decoded bitstream, we just need to be careful // to stop output at the final bitidx2 value, not bitidx - for (i = 0; i < bitidx; i += 2) { + + //http://www.proxmark.org/forum/viewtopic.php?id=403 + for (i = 1; i < bitidx; i += 2) { if ((BitStream[i] == 0) && (BitStream[i+1] == 1)) { BitStream[bit2idx++] = 1 ^ invert; } else if ((BitStream[i] == 1) && (BitStream[i+1] == 0)) { @@ -682,7 +1192,7 @@ int CmdManchesterDemod(const char *Cmd) // We cannot end up in this state, this means we are unsynchronized, // move up 1 bit: i++; - warnings++; + warnings++; PrintAndLog("Unsynchronized, resync..."); PrintAndLog("(too many of those messages mean the stream is not Manchester encoded)"); @@ -716,28 +1226,27 @@ int CmdManchesterDemod(const char *Cmd) BitStream[i+14], BitStream[i+15]); } - return 0; + return bit2idx; } /* Modulate our data into manchester */ int CmdManchesterMod(const char *Cmd) { int i, j; - int clock; int bit, lastbit, wave; - - /* Get our clock */ - clock = GetClock(Cmd, 0, 1); - + int clock = GetClock(Cmd, 0); + + int half = (int)(clock/2); + wave = 0; lastbit = 1; for (i = 0; i < (int)(GraphTraceLen / clock); i++) { bit = GraphBuffer[i * clock] ^ 1; - for (j = 0; j < (int)(clock/2); j++) + for (j = 0; j < half; ++j) GraphBuffer[(i * clock) + j] = bit ^ lastbit ^ wave; - for (j = (int)(clock/2); j < clock; j++) + for (j = half; j < clock; ++j) GraphBuffer[(i * clock) + j] = bit ^ lastbit ^ wave ^ 1; /* Keep track of how we start our wave and if we changed or not this time */ @@ -779,9 +1288,17 @@ int CmdPlot(const char *Cmd) int CmdSave(const char *Cmd) { - FILE *f = fopen(Cmd, "w"); + char filename[FILE_PATH_SIZE] = {0x00}; + int len = 0; + + len = strlen(Cmd); + if (len > FILE_PATH_SIZE) len = FILE_PATH_SIZE; + memcpy(filename, Cmd, len); + + + FILE *f = fopen(filename, "w"); if(!f) { - PrintAndLog("couldn't open '%s'", Cmd); + PrintAndLog("couldn't open '%s'", filename); return 0; } int i; @@ -818,6 +1335,41 @@ int CmdThreshold(const char *Cmd) return 0; } +int CmdDirectionalThreshold(const char *Cmd) +{ + int8_t upThres = param_get8(Cmd, 0); + int8_t downThres = param_get8(Cmd, 1); + + printf("Applying Up Threshold: %d, Down Threshold: %d\n", upThres, downThres); + + int lastValue = GraphBuffer[0]; + GraphBuffer[0] = 0; // Will be changed at the end, but init 0 as we adjust to last samples value if no threshold kicks in. + + for (int i = 1; i < GraphTraceLen; ++i) { + // Apply first threshold to samples heading up + if (GraphBuffer[i] >= upThres && GraphBuffer[i] > lastValue) + { + lastValue = GraphBuffer[i]; // Buffer last value as we overwrite it. + GraphBuffer[i] = 1; + } + // Apply second threshold to samples heading down + else if (GraphBuffer[i] <= downThres && GraphBuffer[i] < lastValue) + { + lastValue = GraphBuffer[i]; // Buffer last value as we overwrite it. + GraphBuffer[i] = -1; + } + else + { + lastValue = GraphBuffer[i]; // Buffer last value as we overwrite it. + GraphBuffer[i] = GraphBuffer[i-1]; + + } + } + GraphBuffer[0] = GraphBuffer[1]; // Aline with first edited sample. + RepaintGraphWindow(); + return 0; +} + int CmdZerocrossings(const char *Cmd) { // Zero-crossings aren't meaningful unless the signal is zero-mean. @@ -852,20 +1404,30 @@ static command_t CommandTable[] = {"help", CmdHelp, 1, "This help"}, {"amp", CmdAmp, 1, "Amplify peaks"}, {"askdemod", Cmdaskdemod, 1, "<0 or 1> -- Attempt to demodulate simple ASK tags"}, + {"askmandemod", Cmdaskmandemod, 1, "[clock] [invert <0|1>] -- Attempt to demodulate ASK/Manchester tags and output binary"}, + {"askrawdemod", Cmdaskrawdemod, 1, "[clock] [invert <0|1>] -- Attempt to demodulate ASK tags and output binary"}, {"autocorr", CmdAutoCorr, 1, " -- Autocorrelation over window"}, + {"biphaserawdecode",CmdBiphaseDecodeRaw,1,"[offset] Biphase decode binary stream already in graph buffer (offset = bit to start decode from)"}, {"bitsamples", CmdBitsamples, 0, "Get raw samples as bitstring"}, {"bitstream", CmdBitstream, 1, "[clock rate] -- Convert waveform into a bitstream"}, {"buffclear", CmdBuffClear, 1, "Clear sample buffer and graph window"}, {"dec", CmdDec, 1, "Decimate samples"}, - {"detectclock", CmdDetectClockRate, 1, "Detect clock rate"}, + {"detectaskclock",CmdDetectClockRate, 1, "Detect ASK clock rate"}, + {"dirthreshold", CmdDirectionalThreshold, 1, " -- Max rising higher up-thres/ Min falling lower down-thres, keep rest as prev."}, + {"em4xdecode", CmdEm410xDecode, 1, "decode em4x from graph buffer"}, {"fskdemod", CmdFSKdemod, 1, "Demodulate graph window as a HID FSK"}, + {"fskhiddemod", CmdFSKdemodHID, 1, "Demodulate graph window as a HID FSK using raw"}, + {"fskiodemod", CmdFSKdemodIO, 1, "Demodulate graph window as an IO Prox FSK using raw"}, + {"fskrawdemod", CmdFSKrawdemod, 1, "[clock rate] [invert] [rchigh] [rclow] Demodulate graph window from FSK to binary (clock = 50)(invert = 1 or 0)(rchigh = 10)(rclow=8)"}, {"grid", CmdGrid, 1, " -- overlay grid on graph window, use zero value to turn off either"}, {"hexsamples", CmdHexsamples, 0, " [] -- Dump big buffer as hex bytes"}, {"hide", CmdHide, 1, "Hide graph window"}, {"hpf", CmdHpf, 1, "Remove DC offset from trace"}, {"load", CmdLoad, 1, " -- Load trace (to graph window"}, {"ltrim", CmdLtrim, 1, " -- Trim samples from left of trace"}, + {"rtrim", CmdRtrim, 1, " -- Trim samples from right of trace"}, {"mandemod", CmdManchesterDemod, 1, "[i] [clock rate] -- Manchester demodulate binary stream (option 'i' to invert output)"}, + {"manrawdecode", Cmdmandecoderaw, 1, "Manchester decode binary stream already in graph buffer"}, {"manmod", CmdManchesterMod, 1, "[clock rate] -- Manchester modulate a binary stream"}, {"norm", CmdNorm, 1, "Normalize max/min to +/-500"}, {"plot", CmdPlot, 1, "Show graph window (hit 'h' in window for keystroke help)"}, @@ -873,6 +1435,7 @@ static command_t CommandTable[] = {"save", CmdSave, 1, " -- Save trace (from graph window)"}, {"scale", CmdScale, 1, " -- Set cursor display scale"}, {"threshold", CmdThreshold, 1, " -- Maximize/minimize every value in the graph window depending on threshold"}, + {"tune", CmdTuneSamples, 0, "Get hw tune samples for graph window"}, {"zerocrossings", CmdZerocrossings, 1, "Count time between zero-crossings"}, {NULL, NULL, 0, NULL} };