FIX: 'iclass write'

[proxmark3-svn] / client / cmddata.c

diff --git a/client/cmddata.c b/client/cmddata.c
index f9aaa8db408f431891e5ebd9b91989f1657ca762..169b0acebd7194644a5a7682b115ed4c0ef4d5b0 100644 (file)
--- a/client/cmddata.c
+++ b/client/cmddata.c
@@ -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;
@@ -1761,7 +1773,8 @@ int CmdIndalaDecode(const char *Cmd)
                        PrintAndLog("Error1: %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) {
@@ -1800,12 +1813,18 @@ 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 +1925,6 @@ 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 +1935,12 @@ 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;
@@ -2141,10 +2159,14 @@ 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 +2216,10 @@ 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 +2293,10 @@ 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;
 }