lf t55xx and some lf demod fixes/adjustments

[proxmark3-svn] / client / cmddata.c

diff --git a/client/cmddata.c b/client/cmddata.c
index 9fa29dd16826de4d9a6f5476f212f92197b935c8..4dd08008f92b893358e206c5e894ff4989554ad1 100644 (file)
--- a/client/cmddata.c
+++ b/client/cmddata.c
@@ -637,6 +637,32 @@ int CmdG_Prox_II_Demod(const char *Cmd)
        return 1;
 }
 
+//by marshmellow
+//see ASKDemod for what args are accepted
+int CmdVikingDemod(const char *Cmd)
+{
+       if (!ASKDemod(Cmd, false, false, 1)) {
+               if (g_debugMode) PrintAndLog("ASKDemod failed");
+               return 0;
+       }
+       size_t size = DemodBufferLen;
+       //call lfdemod.c demod for Viking
+       int ans = VikingDemod_AM(DemodBuffer, &size);
+       if (ans < 0) {
+               if (g_debugMode) PrintAndLog("Error Viking_Demod %d", ans);
+               return 0;
+       }
+       //got a good demod
+       uint32_t raw1 = bytebits_to_byte(DemodBuffer+ans, 32);
+       uint32_t raw2 = bytebits_to_byte(DemodBuffer+ans+32, 32);
+       uint32_t cardid = bytebits_to_byte(DemodBuffer+ans+24, 32);
+       uint8_t checksum = bytebits_to_byte(DemodBuffer+ans+32+24, 8);
+       PrintAndLog("Viking Tag Found: Card ID %08X, Checksum: %02X", cardid, checksum);
+       PrintAndLog("Raw: %08X%08X", raw1,raw2);
+       setDemodBuf(DemodBuffer+ans, 64, 0);
+       return 1;
+}
+
 //by marshmellow - see ASKDemod
 int Cmdaskrawdemod(const char *Cmd)
 {
@@ -1481,6 +1507,10 @@ int CmdFDXBdemodBI(const char *Cmd){
                if (g_debugMode) PrintAndLog("Error FDXBDemod , no startmarker found :: %d",preambleIndex);
                return 0;
        }
+       if (size != 128) {
+               if (g_debugMode) PrintAndLog("Error incorrect data length found");
+               return 0;
+       }
 
        setDemodBuf(BitStream, 128, preambleIndex);
 
@@ -1589,61 +1619,33 @@ int CmdIndalaDecode(const char *Cmd)
                return 0;
        }
        uint8_t invert=0;
-       ans = indala26decode(DemodBuffer, &DemodBufferLen, &invert);
-       if (ans < 1) {
+       size_t size = DemodBufferLen;
+       size_t startIdx = indala26decode(DemodBuffer, &size, &invert);
+       if (startIdx < 1) {
                if (g_debugMode==1)
                        PrintAndLog("Error2: %d",ans);
                return -1;
        }
-       char showbits[251]={0x00};
+       setDemodBuf(DemodBuffer, size, startIdx);
        if (invert)
                if (g_debugMode==1)
                        PrintAndLog("Had to invert bits");
 
+       PrintAndLog("BitLen: %d",DemodBufferLen);
        //convert UID to HEX
        uint32_t uid1, uid2, uid3, uid4, uid5, uid6, uid7;
-       int idx;
-       uid1=0;
-       uid2=0;
-       PrintAndLog("BitLen: %d",DemodBufferLen);
-       if (DemodBufferLen==64){
-               for( idx=0; idx<64; idx++) {
-                       uid1=(uid1<<1)|(uid2>>31);
-                       if (DemodBuffer[idx] == 0) {
-                               uid2=(uid2<<1)|0;
-                               showbits[idx]='0';
-                       } else {
-                               uid2=(uid2<<1)|1;
-                               showbits[idx]='1';
-                       }
-               }
-               showbits[idx]='\0';
-               PrintAndLog("Indala UID=%s (%x%08x)", showbits, uid1, uid2);
-       }
-       else {
-               uid3=0;
-               uid4=0;
-               uid5=0;
-               uid6=0;
-               uid7=0;
-               for( idx=0; idx<DemodBufferLen; idx++) {
-                       uid1=(uid1<<1)|(uid2>>31);
-                       uid2=(uid2<<1)|(uid3>>31);
-                       uid3=(uid3<<1)|(uid4>>31);
-                       uid4=(uid4<<1)|(uid5>>31);
-                       uid5=(uid5<<1)|(uid6>>31);
-                       uid6=(uid6<<1)|(uid7>>31);
-                       if (DemodBuffer[idx] == 0) {
-                               uid7=(uid7<<1)|0;
-                               showbits[idx]='0';
-                       }
-                       else {
-                               uid7=(uid7<<1)|1;
-                               showbits[idx]='1';
-                       }
-               }
-               showbits[idx]='\0';
-               PrintAndLog("Indala UID=%s (%x%08x%08x%08x%08x%08x%08x)", showbits, uid1, uid2, uid3, uid4, uid5, uid6, uid7);
+       uid1=bytebits_to_byte(DemodBuffer,32);
+       uid2=bytebits_to_byte(DemodBuffer+32,32);
+       if (DemodBufferLen==64) {
+               PrintAndLog("Indala UID=%s (%x%08x)", sprint_bin(DemodBuffer,DemodBufferLen), 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);
+               PrintAndLog("Indala UID=%s (%x%08x%08x%08x%08x%08x%08x)", 
+                   sprint_bin(DemodBuffer,DemodBufferLen), uid1, uid2, uid3, uid4, uid5, uid6, uid7);
        }
        if (g_debugMode){
                PrintAndLog("DEBUG: printing demodbuffer:");
@@ -1713,7 +1715,7 @@ int NRZrawDemod(const char *Cmd, bool verbose)
        size_t BitLen = getFromGraphBuf(BitStream);
        if (BitLen==0) return 0;
        int errCnt=0;
-       errCnt = nrzRawDemod(BitStream, &BitLen, &clk, &invert, maxErr);
+       errCnt = nrzRawDemod(BitStream, &BitLen, &clk, &invert);
        if (errCnt > maxErr){
                if (g_debugMode) PrintAndLog("Too many errors found, clk: %d, invert: %d, numbits: %d, errCnt: %d",clk,invert,BitLen,errCnt);
                return 0;
@@ -2345,6 +2347,7 @@ static command_t CommandTable[] =
        {"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)"},
        {"askem410xdemod",  CmdAskEM410xDemod,  1, "[clock] [invert<0|1>] [maxErr] -- Demodulate an EM410x tag from GraphBuffer (args optional)"},
        {"askgproxiidemod", CmdG_Prox_II_Demod, 1, "Demodulate a G Prox II tag from GraphBuffer"},
+       {"askvikingdemod",  CmdVikingDemod,     1, "Demodulate a Viking tag from GraphBuffer"},
        {"autocorr",        CmdAutoCorr,        1, "[window length] [g] -- Autocorrelation over window - g to save back to GraphBuffer (overwrite)"},
        {"biphaserawdecode",CmdBiphaseDecodeRaw,1, "[offset] [invert<0|1>] [maxErr] -- Biphase decode bin stream in DemodBuffer (offset = 0|1 bits to shift the decode start)"},
        {"bin2hex",         Cmdbin2hex,         1, "bin2hex <digits>     -- Converts binary to hexadecimal"},