ADD: added the crc8legic to Lua. call it with core.crc8legic

[proxmark3-svn] / client / cmddata.c

diff --git a/client/cmddata.c b/client/cmddata.c
index 44bc42c090c5b0228c04e494cfa21d76e9f372aa..2c12e2bb9391da3248f6cc720656c2ff7d51f5c0 100644 (file)
--- a/client/cmddata.c
+++ b/client/cmddata.c
@@ -277,7 +277,8 @@ int AskEm410xDecode(bool verbose, uint32_t *hi, uint64_t *lo )
 
 int AskEm410xDemod(const char *Cmd, uint32_t *hi, uint64_t *lo, bool verbose)
 {
-       if (!ASKDemod(Cmd, FALSE, FALSE, 1)) return 0;
+       bool st = TRUE;
+       if (!ASKDemod_ext(Cmd, FALSE, FALSE, 1, &st)) return 0;
        return AskEm410xDecode(verbose, hi, lo);
 }
 
@@ -312,8 +313,7 @@ int CmdAskEM410xDemod(const char *Cmd)
 //verbose will print results and demoding messages
 //emSearch will auto search for EM410x format in bitstream
 //askType switches decode: ask/raw = 0, ask/manchester = 1 
-int ASKDemod(const char *Cmd, bool verbose, bool emSearch, uint8_t askType)
-{
+int ASKDemod_ext(const char *Cmd, bool verbose, bool emSearch, uint8_t askType, bool *stCheck) {
        int invert=0;
        int clk=0;
        int maxErr=100;
@@ -336,7 +336,14 @@ int ASKDemod(const char *Cmd, bool verbose, bool emSearch, uint8_t askType)
        if (g_debugMode) PrintAndLog("DEBUG: Bitlen from grphbuff: %d",BitLen);
        if (BitLen<255) return 0;
        if (maxLen<BitLen && maxLen != 0) BitLen = maxLen;
-
+       int foundclk = 0;
+       bool st = false;
+       if (*stCheck) st = DetectST(BitStream, &BitLen, &foundclk);
+       if (st) {
+               *stCheck = st;
+               clk = (clk == 0) ? foundclk : clk;
+               if (verbose || g_debugMode) PrintAndLog("\nFound Sequence Terminator");
+       }
        int errCnt = askdemod(BitStream, &BitLen, &clk, &invert, maxErr, askAmp, askType);
        if (errCnt<0 || BitLen<16){  //if fatal error (or -1)
                if (g_debugMode) PrintAndLog("DEBUG: no data found %d, errors:%d, bitlen:%d, clock:%d",errCnt,invert,BitLen,clk);
@@ -365,6 +372,10 @@ int ASKDemod(const char *Cmd, bool verbose, bool emSearch, uint8_t askType)
        }
        return 1;
 }
+int ASKDemod(const char *Cmd, bool verbose, bool emSearch, uint8_t askType) {
+       bool st = false;
+       return ASKDemod_ext(Cmd, verbose, emSearch, askType, &st);
+}
 
 //by marshmellow
 //takes 5 arguments - clock, invert, maxErr, maxLen as integers and amplify as char == 'a'
@@ -374,7 +385,8 @@ int Cmdaskmandemod(const char *Cmd)
 {
        char cmdp = param_getchar(Cmd, 0);
        if (strlen(Cmd) > 25 || cmdp == 'h' || cmdp == 'H') {
-               PrintAndLog("Usage:  data rawdemod am [clock] <invert> [maxError] [maxLen] [amplify]");
+               PrintAndLog("Usage:  data rawdemod am <s> [clock] <invert> [maxError] [maxLen] [amplify]");
+               PrintAndLog("     ['s'] optional, check for Sequence Terminator");
                PrintAndLog("     [set clock as integer] optional, if not set, autodetect");
                PrintAndLog("     <invert>, 1 to invert output");
                PrintAndLog("     [set maximum allowed errors], default = 100");
@@ -388,6 +400,12 @@ int Cmdaskmandemod(const char *Cmd)
                PrintAndLog("          : data rawdemod am 64 1 0 = demod an ask/manchester tag from GraphBuffer using a clock of RF/64, inverting data and allowing 0 demod errors");
                return 0;
        }
+       bool st = TRUE;
+       if (Cmd[0]=='s') 
+               return ASKDemod_ext(Cmd++, TRUE, TRUE, 1, &st);
+       else if (Cmd[1] == 's')
+               return ASKDemod_ext(Cmd+=2, TRUE, TRUE, 1, &st);
+       else
        return ASKDemod(Cmd, TRUE, TRUE, 1);
 }
 
@@ -595,7 +613,7 @@ int CmdG_Prox_II_Demod(const char *Cmd)
                if ((idx+1) % 5 == 0){
                        //spacer bit - should be 0
                        if (DemodBuffer[startIdx+idx] != 0) {
-                               if (g_debugMode) PrintAndLog("Error spacer not 0: %d, pos: %d",DemodBuffer[startIdx+idx],startIdx+idx);
+                               if (g_debugMode) PrintAndLog("Error spacer not 0: %u, pos: %u", (unsigned int)DemodBuffer[startIdx+idx],(unsigned int)(startIdx+idx));
                                return 0;
                        }
                        continue;
@@ -610,14 +628,14 @@ int CmdG_Prox_II_Demod(const char *Cmd)
                ByteStream[ByteCnt] = ByteStream[ByteCnt] | (DemodBuffer[startIdx+idx]<<bitCnt);
                bitCnt++;
                if (bitCnt % 8 == 0){
-                       if (g_debugMode) PrintAndLog("byte %d: %02x",ByteCnt,ByteStream[ByteCnt]);
+                       if (g_debugMode) PrintAndLog("byte %u: %02x", (unsigned int)ByteCnt, ByteStream[ByteCnt]);
                        bitCnt=0;
                        ByteCnt++;
                }
        }
        for (uint8_t i = 0; i < ByteCnt; i++){
                ByteStream[i] ^= xorKey; //xor
-               if (g_debugMode) PrintAndLog("byte %d after xor: %02x", i, ByteStream[i]);
+               if (g_debugMode) PrintAndLog("byte %u after xor: %02x", (unsigned int)i, ByteStream[i]);
        }
        //now ByteStream contains 64 bytes of decrypted raw tag data
        // 
@@ -925,16 +943,16 @@ char *GetFSKType(uint8_t fchigh, uint8_t fclow, uint8_t invert)
        char *fskType = fType;
        if (fchigh==10 && fclow==8){
                if (invert) //fsk2a
-                       fskType = "FSK2a";
+                       memcpy(fskType, "FSK2a", 5);
                else //fsk2
-                       fskType = "FSK2";
+                       memcpy(fskType, "FSK2", 4);
        } else if (fchigh == 8 && fclow == 5) {
                if (invert)
-                       fskType = "FSK1";
+                       memcpy(fskType, "FSK1", 4);
                else
-                       fskType = "FSK1a";
+                       memcpy(fskType, "FSK1a", 5);
        } else {
-               fskType = "FSK??";
+               memcpy(fskType, "FSK??", 5);
        }
        return fskType;
 }
@@ -964,7 +982,6 @@ int FSKrawDemod(const char *Cmd, bool verbose)
        uint8_t BitStream[MAX_GRAPH_TRACE_LEN]={0};
        size_t BitLen = getFromGraphBuf(BitStream);
        if (BitLen==0) return 0;
-       if (g_debugMode==2) PrintAndLog("DEBUG: Got samples");  
        //get field clock lengths
        uint16_t fcs=0;
        if (!fchigh || !fclow) {