]> git.zerfleddert.de Git - proxmark3-svn/blobdiff - client/cmddata.c
CHG: 'lf awid brute' - extra check if device gotten offline
[proxmark3-svn] / client / cmddata.c
index 4279e9b612eded8449212f7aa0ebc082b3215741..a5983e91db877a2a5665b8ad52bdcb1f83cafecf 100644 (file)
@@ -26,8 +26,8 @@
 #include "loclass/cipherutils.h" // for decimating samples in getsamples
 
 uint8_t DemodBuffer[MAX_DEMOD_BUF_LEN];
-uint8_t g_debugMode=0;
-size_t DemodBufferLen=0;
+uint8_t g_debugMode = 0;
+size_t DemodBufferLen = 0;
 static int CmdHelp(const char *Cmd);
 
 int usage_data_printdemodbuf(void){
@@ -258,8 +258,7 @@ void setDemodBuf(uint8_t *buff, size_t size, size_t startIdx)
        for (; i < size; i++){
                DemodBuffer[i]=buff[startIdx++];
        }
-       DemodBufferLen=size;
-       return;
+       DemodBufferLen = size;
 }
 
 int CmdSetDebugMode(const char *Cmd)
@@ -459,23 +458,36 @@ void printEM410x(uint32_t hi, uint64_t id)
 int AskEm410xDecode(bool verbose, uint32_t *hi, uint64_t *lo )
 {
        size_t idx = 0;
-       size_t BitLen = DemodBufferLen;
+       size_t size = DemodBufferLen;
        uint8_t BitStream[MAX_GRAPH_TRACE_LEN]={0};
-       memcpy(BitStream, DemodBuffer, BitLen); 
-       if (Em410xDecode(BitStream, &BitLen, &idx, hi, lo)){
-               //set GraphBuffer for clone or sim command
-               setDemodBuf(BitStream, BitLen, idx);
+       memcpy(BitStream, DemodBuffer, size); 
+       int ans = Em410xDecode(BitStream, &size, &idx, hi, lo);
+       if ( ans < 0){
                if (g_debugMode){
-                       PrintAndLog("DEBUG: idx: %d, Len: %d, Printing Demod Buffer:", idx, BitLen);
-                       printDemodBuff();
-               }
-               if (verbose){
-                       PrintAndLog("EM410x pattern found: ");
-                       printEM410x(*hi, *lo);
+
+                       if (ans == -1)
+                               PrintAndLog("DEBUG: Error - Em410x not only 0|1 in decoded bitstream");
+                       else if (ans == -3)
+                               PrintAndLog("DEBUG: Error - Em410x Size not correct: %d", size);
+                       else if (ans == -4)
+                               PrintAndLog("DEBUG: Error - Em410x preamble not found");
+                       else if (ans == -5)
+                               PrintAndLog("DEBUG: Error - Em410x parity failed");
                }
-               return 1;
+               return 0;
        }
-       return 0;
+       
+       //set GraphBuffer for clone or sim command
+       setDemodBuf(BitStream, size, idx);
+       if (g_debugMode){
+               PrintAndLog("DEBUG: idx: %d, Len: %d, Printing Demod Buffer:", idx, size);
+               printDemodBuff();
+       }
+       if (verbose){
+               PrintAndLog("EM410x pattern found: ");
+               printEM410x(*hi, *lo);
+       }
+       return 1;
 }
 
 int AskEm410xDemod(const char *Cmd, uint32_t *hi, uint64_t *lo, bool verbose)
@@ -970,17 +982,17 @@ int CmdUndec(const char *Cmd)
 //shift graph zero up or down based on input + or -
 int CmdGraphShiftZero(const char *Cmd)
 {
-       int shift=0;
+       int shift = 0, shiftedVal = 0;
        //set options from parameters entered with the command
        sscanf(Cmd, "%i", &shift);
-       int shiftedVal=0;
+
        for(int i = 0; i<GraphTraceLen; i++){
                shiftedVal=GraphBuffer[i]+shift;
-               if (shiftedVal>127) 
-                       shiftedVal=127;
-               else if (shiftedVal<-127) 
-                       shiftedVal=-127;
-               GraphBuffer[i]= shiftedVal;
+               if (shiftedVal > 127) 
+                       shiftedVal = 127;
+               else if (shiftedVal < -127) 
+                       shiftedVal = -127;
+               GraphBuffer[i] = shiftedVal;
        }
        CmdNorm("");
        return 0;
@@ -1276,42 +1288,46 @@ int CmdFSKdemodParadox(const char *Cmd)
 //print ioprox ID and some format details
 int CmdFSKdemodIO(const char *Cmd)
 {
-       int idx=0;
+       int retval = 0;
+       int idx = 0;
+       char crcStr[20];
+       memset(crcStr, 0x00, sizeof(crcStr) );
+
        //something in graphbuffer?
        if (GraphTraceLen < 65) {
                if (g_debugMode)PrintAndLog("DEBUG: not enough samples in GraphBuffer");
-               return 0;
+               return retval;
        }
        uint8_t BitStream[MAX_GRAPH_TRACE_LEN]={0};
-       size_t BitLen = getFromGraphBuf(BitStream);
-       if (BitLen==0) return 0;
+       size_t bitlen = getFromGraphBuf(BitStream);
+       if (bitlen == 0) return retval;
 
        //get binary from fsk wave
-       idx = IOdemodFSK(BitStream,BitLen);
+       idx = IOdemodFSK(BitStream, bitlen);
        if (idx<0){
                if (g_debugMode){
                        if (idx==-1){
-                               PrintAndLog("DEBUG: Just Noise Detected");     
+                               PrintAndLog("DEBUG: IO Prox - Just Noise Detected");     
                        } else if (idx == -2) {
-                               PrintAndLog("DEBUG: not enough samples");
+                               PrintAndLog("DEBUG: IO Prox - not enough samples");
                        } else if (idx == -3) {
-                               PrintAndLog("DEBUG: error during fskdemod");        
+                               PrintAndLog("DEBUG: IO Prox - error during fskdemod");        
                        } else if (idx == -4) {
-                               PrintAndLog("DEBUG: Preamble not found");
+                               PrintAndLog("DEBUG: IO Prox - Preamble not found");
                        } else if (idx == -5) {
-                               PrintAndLog("DEBUG: Separator bits not found");
+                               PrintAndLog("DEBUG: IO Prox - Separator bits not found");
                        } else {
-                               PrintAndLog("DEBUG: Error demoding fsk %d", idx);
+                               PrintAndLog("DEBUG: IO Prox - Error demoding fsk %d", idx);
                        }
                }
-               return 0;
+               return retval;
        }
        if (idx==0){
                if (g_debugMode){
-                       PrintAndLog("DEBUG: IO Prox Data not found - FSK Bits: %d",BitLen);
-                       if (BitLen > 92) PrintAndLog("%s", sprint_bin_break(BitStream,92,16));
+                       PrintAndLog("DEBUG: IO Prox - Data not found - FSK Bits: %d", bitlen);
+                       if (bitlen > 92) PrintAndLog("%s", sprint_bin_break(BitStream,92,16));
                } 
-               return 0;
+               return retval;
        }
                //Index map
                //0           10          20          30          40          50          60
@@ -1322,18 +1338,21 @@ int CmdFSKdemodIO(const char *Cmd)
                //
                //XSF(version)facility:codeone+codetwo (raw)
                //Handle the data
-       if (idx+64>BitLen) {
-               if (g_debugMode) PrintAndLog("not enough bits found - bitlen: %d",BitLen);
-               return 0;
+       if (idx + 64 > bitlen) {
+               if (g_debugMode) PrintAndLog("DEBUG: IO Prox - not enough bits found - bitlen: %d", bitlen);
+               return retval;
        }
-       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]);
-       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]);
-       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]);
-       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]);
-       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]);
-       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]);
-       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]);
-
+       
+       if (g_debugMode) {
+               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]);
+               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]);
+               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]);
+               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]);
+               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]);
+               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]);
+               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]);
+       }
+       
        uint32_t code = bytebits_to_byte(BitStream+idx,32);
        uint32_t code2 = bytebits_to_byte(BitStream+idx+32,32);
        uint8_t version = bytebits_to_byte(BitStream+idx+27,8); //14,4
@@ -1342,21 +1361,29 @@ int CmdFSKdemodIO(const char *Cmd)
        uint8_t crc = bytebits_to_byte(BitStream+idx+54,8);
        uint16_t calccrc = 0;
 
-       for (uint8_t i=1; i<6; ++i){
-               calccrc += bytebits_to_byte(BitStream+idx+9*i,8);
+       for (uint8_t i = 1; i < 6; ++i){
+               calccrc += bytebits_to_byte(BitStream + idx + 9 * i ,8);
        }
        calccrc &= 0xff;
        calccrc = 0xff - calccrc;
 
-       char *crcStr = (crc == calccrc) ? "crc ok": "!crc";
+       if  (crc == calccrc) {
+               snprintf(crcStr, 3, "ok");
+               retval = 1;
+       } else {
+               if (g_debugMode) PrintAndLog("DEBUG: IO Prox - crc failed");
+                       
+               snprintf(crcStr, 20, "failed 0x%02X != 0x%02X", crc, calccrc);
+               retval = 0;
+       }
 
-       PrintAndLog("IO Prox XSF(%02d)%02x:%05d (%08x%08x) [%02x %s]",version,facilitycode,number,code,code2, crc, crcStr);
+       PrintAndLog("IO Prox XSF(%02d)%02x:%05d (%08x%08x) [crc %s]",version,facilitycode,number,code,code2, crcStr);
        setDemodBuf(BitStream,64,idx);
        if (g_debugMode){
-               PrintAndLog("DEBUG: idx: %d, Len: %d, Printing demod buffer:",idx,64);
+               PrintAndLog("DEBUG: IO Prox - idx: %d, Len: %d, Printing demod buffer:", idx, 64);
                printDemodBuff();
-       }
-       return 1;
+       }       
+       return retval;
 }
 
 //by marshmellow
@@ -1485,17 +1512,17 @@ int CmdFSKdemodPyramid(const char *Cmd)
        if (idx < 0){
                if (g_debugMode){
                        if (idx == -5)
-                               PrintAndLog("DEBUG: Error - not enough samples");
+                               PrintAndLog("DEBUG: Error - Pyramid: not enough samples");
                        else if (idx == -1)
-                               PrintAndLog("DEBUG: Error - only noise found");
+                               PrintAndLog("DEBUG: Error - Pyramid: only noise found");
                        else if (idx == -2)
-                               PrintAndLog("DEBUG: Error - problem during FSK demod");
+                               PrintAndLog("DEBUG: Error - Pyramid: problem during FSK demod");
                        else if (idx == -3)
-                               PrintAndLog("DEBUG: Error - Size not correct: %d", size);
+                               PrintAndLog("DEBUG: Error - Pyramid: size not correct: %d", size);
                        else if (idx == -4)
-                               PrintAndLog("DEBUG: Error - Pyramid preamble not found");
+                               PrintAndLog("DEBUG: Error - Pyramid: preamble not found");
                        else
-                               PrintAndLog("DEBUG: Error - idx: %d",idx);
+                               PrintAndLog("DEBUG: Error - Pyramid: idx: %d",idx);
                }
                return 0;
        }
@@ -1528,19 +1555,23 @@ int CmdFSKdemodPyramid(const char *Cmd)
        }
        //check checksum calc
        //checksum calc thanks to ICEMAN!!
-       uint32_t checkCS =  CRC8Maxim(csBuff,13);
+       uint32_t checkCS =  CRC8Maxim(csBuff, 13);
 
        //get raw ID before removing parities
-       uint32_t rawLo = bytebits_to_byte(BitStream+idx+96,32);
-       uint32_t rawHi = bytebits_to_byte(BitStream+idx+64,32);
-       uint32_t rawHi2 = bytebits_to_byte(BitStream+idx+32,32);
-       uint32_t rawHi3 = bytebits_to_byte(BitStream+idx,32);
-       setDemodBuf(BitStream,128,idx);
+       uint32_t rawLo = bytebits_to_byte(BitStream+idx+96, 32);
+       uint32_t rawHi = bytebits_to_byte(BitStream+idx+64, 32);
+       uint32_t rawHi2 = bytebits_to_byte(BitStream+idx+32, 32);
+       uint32_t rawHi3 = bytebits_to_byte(BitStream+idx, 32);
+       setDemodBuf(BitStream, 128, idx);
 
        size = removeParity(BitStream, idx+8, 8, 1, 120);
        if (size != 105){
-               if (g_debugMode) 
-                       PrintAndLog("DEBUG: Error at parity check - tag size does not match Pyramid format, SIZE: %d, IDX: %d, hi3: %x",size, idx, rawHi3);
+               if (g_debugMode) {
+                       if ( size == 0)
+                               PrintAndLog("DEBUG: Error - Pyramid: parity check failed - IDX: %d, hi3: %08X", idx, rawHi3);
+                       else
+                               PrintAndLog("DEBUG: Error - Pyramid: at parity check - tag size does not match Pyramid format, SIZE: %d, IDX: %d, hi3: %08X", size, idx, rawHi3);
+               }
                return 0;
        }
 
@@ -1598,7 +1629,7 @@ int CmdFSKdemodPyramid(const char *Cmd)
                PrintAndLog("Checksum %02x failed - should have been %02x", checksum, checkCS);
 
        if (g_debugMode){
-               PrintAndLog("DEBUG: idx: %d, Len: %d, Printing Demod Buffer:", idx, 128);
+               PrintAndLog("DEBUG: Pyramid: idx: %d, Len: %d, Printing Demod Buffer:", idx, 128);
                printDemodBuff();
        }
        return 1;
@@ -1690,8 +1721,7 @@ int CmdFDXBdemodBI(const char *Cmd){
        PrintAndLog("reserved Code: %u", reservedCode);
        PrintAndLog("Animal Tag:    %s", animalBit ? "True" : "False");
        PrintAndLog("CRC:           0x%04X - [%04X] - %s", crc16, calcCrc, (calcCrc == crc16) ? "Passed" : "Failed");
-       PrintAndLog("Extended:      0x%X\n", extended);
-       
+       PrintAndLog("Extended:      0x%X\n", extended); 
        return 1;
 }
 
@@ -1757,41 +1787,39 @@ int CmdIndalaDecode(const char *Cmd)
        }
 
        if (!ans){
-               if (g_debugMode) 
-                       PrintAndLog("Error1: %d",ans);
+               if (g_debugMode) PrintAndLog("DEBUG: Indala - Can't demod signal: %d",ans);
                return 0;
        }
-       uint8_t invert=0;
+
+       uint8_t invert = 0;
        size_t size = DemodBufferLen;
        int startIdx = indala26decode(DemodBuffer, &size, &invert);
        if (startIdx < 0 || size > 224) {
-               if (g_debugMode)
-                       PrintAndLog("Error2: %d",ans);
+               if (g_debugMode) PrintAndLog("DEBUG: Indala - Wrong size, expected [64|224] got: %d", size);
                return -1;
        }
        setDemodBuf(DemodBuffer, size, (size_t)startIdx);
        if (invert)
-               if (g_debugMode)
-                       PrintAndLog("Had to invert bits");
+               if (g_debugMode) PrintAndLog("DEBUG: Indala - Had to invert bits");
 
        PrintAndLog("BitLen: %d",DemodBufferLen);
        //convert UID to HEX
        uint32_t uid1, uid2, uid3, uid4, uid5, uid6, uid7;
-       uid1=bytebits_to_byte(DemodBuffer,32);
-       uid2=bytebits_to_byte(DemodBuffer+32,32);
+       uid1 = bytebits_to_byte(DemodBuffer,32);
+       uid2 = bytebits_to_byte(DemodBuffer+32,32);
        if (DemodBufferLen==64){
                PrintAndLog("Indala UID=%s (%x%08x)",  sprint_bin_break(DemodBuffer,DemodBufferLen,16), uid1, uid2);
        } else {
-               uid3=bytebits_to_byte(DemodBuffer+64,32);
-               uid4=bytebits_to_byte(DemodBuffer+96,32);
-               uid5=bytebits_to_byte(DemodBuffer+128,32);
-               uid6=bytebits_to_byte(DemodBuffer+160,32);
-               uid7=bytebits_to_byte(DemodBuffer+192,32);
+               uid3 = bytebits_to_byte(DemodBuffer+64,32);
+               uid4 = bytebits_to_byte(DemodBuffer+96,32);
+               uid5 = bytebits_to_byte(DemodBuffer+128,32);
+               uid6 = bytebits_to_byte(DemodBuffer+160,32);
+               uid7 = bytebits_to_byte(DemodBuffer+192,32);
                PrintAndLog("Indala UID=%s (%x%08x%08x%08x%08x%08x%08x)", 
                     sprint_bin_break(DemodBuffer,DemodBufferLen,16), uid1, uid2, uid3, uid4, uid5, uid6, uid7);
        }
        if (g_debugMode){
-               PrintAndLog("DEBUG: printing demodbuffer:");
+               PrintAndLog("DEBUG: Indala - printing demodbuffer:");
                printDemodBuff();
        }
        return 1;
@@ -1800,12 +1828,18 @@ int CmdIndalaDecode(const char *Cmd)
 int CmdPSKNexWatch(const char *Cmd)
 {
        if (!PSKDemod("", false)) return 0;
+
        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};
        size_t startIdx = 0, size = DemodBufferLen; 
+       
+       // sanity check. 
+       if ( size < sizeof(preamble) + 100) return 0;
+       
        bool invert = false;
        if (!preambleSearch(DemodBuffer, preamble, sizeof(preamble), &size, &startIdx)){
                // if didn't find preamble try again inverting
                if (!PSKDemod("1", false)) return 0; 
+
                size = DemodBufferLen;
                if (!preambleSearch(DemodBuffer, preamble, sizeof(preamble), &size, &startIdx)) return 0;
                invert = true;
@@ -1906,7 +1940,6 @@ int CmdPSK1rawDemod(const char *Cmd)
                if (g_debugMode) PrintAndLog("Error demoding: %d",ans); 
                return 0;
        }
        PrintAndLog("PSK1 demoded bitstream:");
        // Now output the bitstream to the scrollback by line of 16 bits
        printDemodBuff();
@@ -1917,12 +1950,12 @@ int CmdPSK1rawDemod(const char *Cmd)
 // takes same args as cmdpsk1rawdemod
 int CmdPSK2rawDemod(const char *Cmd)
 {
-       int ans=0;
+       int ans = 0;
        char cmdp = param_getchar(Cmd, 0);
        if (strlen(Cmd) > 10 || cmdp == 'h' || cmdp == 'H')
                return usage_data_rawdemod_p2();
 
-       ans=PSKDemod(Cmd, TRUE);
+       ans = PSKDemod(Cmd, TRUE);
        if (!ans){
                if (g_debugMode) PrintAndLog("Error demoding: %d",ans);  
                return 0;
@@ -2071,9 +2104,9 @@ int getSamples(const char *Cmd, bool silent)
        if ( n == 0 || n > sizeof(got))
                n = sizeof(got);
 
-       PrintAndLog("Reading %d bytes from device memory\n", n);
+       if (!silent) PrintAndLog("Reading %d bytes from device memory\n", n);
        GetFromBigBuf(got,n,0);
-       PrintAndLog("Data fetched");
+       if (!silent) PrintAndLog("Data fetched");
        UsbCommand response;
        if ( !WaitForResponseTimeout(CMD_ACK, &response, 10000) ) {
         PrintAndLog("timeout while waiting for reply.");
@@ -2085,12 +2118,12 @@ int getSamples(const char *Cmd, bool silent)
        //Old devices without this feature would send 0 at arg[0]
        if (response.arg[0] > 0) {
                sample_config *sc = (sample_config *) response.d.asBytes;
-               PrintAndLog("Samples @ %d bits/smpl, decimation 1:%d ", sc->bits_per_sample, sc->decimation);
+               if (!silent) PrintAndLog("Samples @ %d bits/smpl, decimation 1:%d ", sc->bits_per_sample, sc->decimation);
                bits_per_sample = sc->bits_per_sample;
        }
        
        if (bits_per_sample < 8) {
-               PrintAndLog("Unpacking...");
+               if (!silent) PrintAndLog("Unpacking...");
                BitstreamOut bout = { got, bits_per_sample * n,  0};
                int j =0;
                for (j = 0; j * bits_per_sample < n * 8 && j < n; j++) {
@@ -2098,7 +2131,7 @@ int getSamples(const char *Cmd, bool silent)
                        GraphBuffer[j] = ((int) sample )- 128;
                }
                GraphTraceLen = j;
-               PrintAndLog("Unpacked %d samples" , j );
+               if (!silent) PrintAndLog("Unpacked %d samples" , j );
        } else {
                for (int j = 0; j < n; j++) {
                        GraphBuffer[j] = ((int)got[j]) - 128;
@@ -2141,10 +2174,14 @@ int CmdTuneSamples(const char *Cmd)
        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 ( vLf125 > 0 )
+               PrintAndLog("# LF antenna: %5.2f V @   125.00 kHz", vLf125/1000.0);
+       if ( vLf134 > 0 )
+               PrintAndLog("# LF antenna: %5.2f V @   134.00 kHz", vLf134/1000.0);
+       if ( peakv > 0 && peakf > 0 )
+               PrintAndLog("# LF optimal: %5.2f V @%9.2f kHz", peakv/1000.0, 12000.0/(peakf+1));
+       if ( vHf > 0 )
+               PrintAndLog("# HF antenna: %5.2f V @    13.56 MHz", vHf/1000.0);
 
  #define LF_UNUSABLE_V         2948            // was 2000. Changed due to bugfix in voltage measurements. LF results are now 47% higher.
  #define LF_MARGINAL_V         14739           // was 10000. Changed due to bugfix bug in voltage measurements. LF results are now 47% higher.
@@ -2194,7 +2231,10 @@ int CmdLoad(const char *Cmd)
                GraphBuffer[GraphTraceLen] = atoi(line);
                GraphTraceLen++;
        }
-       fclose(f);
+       if (f) {
+               fclose(f);
+               f = NULL;
+       }
        PrintAndLog("loaded %d samples", GraphTraceLen);
        RepaintGraphWindow();
        return 0;
@@ -2268,7 +2308,10 @@ int CmdSave(const char *Cmd)
        for (i = 0; i < GraphTraceLen; i++) {
                fprintf(f, "%d\n", GraphBuffer[i]);
        }
-       fclose(f);
+       if (f) {
+               fclose(f);
+               f = NULL;
+       }
        PrintAndLog("saved to '%s'", Cmd);
        return 0;
 }
@@ -2417,7 +2460,10 @@ int Cmdhex2bin(const char *Cmd)
 }
 
 int CmdDataIIR(const char *Cmd){
-       iceIIR_Butterworth(GraphBuffer, GraphTraceLen);
+
+       uint8_t k = param_get8(Cmd,0);
+       //iceIIR_Butterworth(GraphBuffer, GraphTraceLen);
+       iceSimple_Filter(GraphBuffer, GraphTraceLen, k);
        RepaintGraphWindow();
        return 0;
 }
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