ADD: Holimans new changes in master.

[proxmark3-svn] / client / cmdlf.c

diff --git a/client/cmdlf.c b/client/cmdlf.c
index 2f55cd22caa5d972b4fd1e4890de002931e527c0..e38eee51f410bd5edadcdf5eb8a5ccb551577251 100644 (file)
--- a/client/cmdlf.c
+++ b/client/cmdlf.c
@@ -48,379 +48,384 @@ int CmdLFCommandRead(const char *Cmd)
 
 int CmdFlexdemod(const char *Cmd)
 {
 
 int CmdFlexdemod(const char *Cmd)
 {

-  int i;
-  for (i = 0; i < GraphTraceLen; ++i) {
-    if (GraphBuffer[i] < 0) {
-      GraphBuffer[i] = -1;
-    } else {
-      GraphBuffer[i] = 1;
-    }
-  }
+       int i;
+       for (i = 0; i < GraphTraceLen; ++i) {
+               if (GraphBuffer[i] < 0) {
+                       GraphBuffer[i] = -1;
+               } else {
+                       GraphBuffer[i] = 1;
+               }
+       }

 
 

-#define LONG_WAIT 100
-  int start;
-  for (start = 0; start < GraphTraceLen - LONG_WAIT; start++) {
-    int first = GraphBuffer[start];
-    for (i = start; i < start + LONG_WAIT; i++) {
-      if (GraphBuffer[i] != first) {
-        break;
-      }
-    }
-    if (i == (start + LONG_WAIT)) {
-      break;
-    }
-  }
-  if (start == GraphTraceLen - LONG_WAIT) {
-    PrintAndLog("nothing to wait for");
-    return 0;
-  }
+       #define LONG_WAIT 100
+       int start;
+       for (start = 0; start < GraphTraceLen - LONG_WAIT; start++) {
+               int first = GraphBuffer[start];
+               for (i = start; i < start + LONG_WAIT; i++) {
+                       if (GraphBuffer[i] != first) {
+                               break;
+                       }
+               }
+               if (i == (start + LONG_WAIT)) {
+               break;
+               }
+       }
+       if (start == GraphTraceLen - LONG_WAIT) {
+               //PrintAndLog("nothing to wait for");
+               return 0;
+       }

 
 

-  GraphBuffer[start] = 2;
-  GraphBuffer[start+1] = -2;
+       GraphBuffer[start] = 2;
+       GraphBuffer[start+1] = -2;
+       uint8_t bits[64] = {0x00};

 
 

-  uint8_t bits[64];
+       int bit, sum;
+       i = start;
+       for (bit = 0; bit < 64; bit++) {
+               sum = 0;
+               for (int j = 0; j < 16; j++) {
+                       sum += GraphBuffer[i++];
+               }

 
 

-  int bit;
-  i = start;
-  for (bit = 0; bit < 64; bit++) {
-    int j;
-    int sum = 0;
-    for (j = 0; j < 16; j++) {
-      sum += GraphBuffer[i++];
-    }
-    if (sum > 0) {
-      bits[bit] = 1;
-    } else {
-      bits[bit] = 0;
-    }
-    PrintAndLog("bit %d sum %d", bit, sum);
-  }
+               bits[bit] = (sum > 0) ? 1 : 0;

 
 

-  for (bit = 0; bit < 64; bit++) {
-    int j;
-    int sum = 0;
-    for (j = 0; j < 16; j++) {
-      sum += GraphBuffer[i++];
-    }
-    if (sum > 0 && bits[bit] != 1) {
-      PrintAndLog("oops1 at %d", bit);
-    }
-    if (sum < 0 && bits[bit] != 0) {
-      PrintAndLog("oops2 at %d", bit);
-    }
-  }
+               PrintAndLog("bit %d sum %d", bit, sum);
+       }

 
 

-  GraphTraceLen = 32*64;
-  i = 0;
-  int phase = 0;
-  for (bit = 0; bit < 64; bit++) {
-    if (bits[bit] == 0) {
-      phase = 0;
-    } else {
-      phase = 1;
-    }
-    int j;
-    for (j = 0; j < 32; j++) {
-      GraphBuffer[i++] = phase;
-      phase = !phase;
-    }
-  }
+       for (bit = 0; bit < 64; bit++) {
+               int j;
+               int sum = 0;
+               for (j = 0; j < 16; j++) {
+                       sum += GraphBuffer[i++];
+               }
+               if (sum > 0 && bits[bit] != 1) {
+                       PrintAndLog("oops1 at %d", bit);
+               }
+               if (sum < 0 && bits[bit] != 0) {
+                       PrintAndLog("oops2 at %d", bit);
+               }
+       }

 
 

-  RepaintGraphWindow();
-  return 0;
+       // HACK writing back to graphbuffer.
+       GraphTraceLen = 32*64;
+       i = 0;
+       int phase = 0;
+       for (bit = 0; bit < 64; bit++) {
+       
+               phase = (bits[bit] == 0) ? 0 : 1;
+               
+               int j;
+               for (j = 0; j < 32; j++) {
+                       GraphBuffer[i++] = phase;
+                       phase = !phase;
+               }
+       }
+
+       RepaintGraphWindow();
+       return 0;

 }
   
 int CmdIndalaDemod(const char *Cmd)
 {
 }
   
 int CmdIndalaDemod(const char *Cmd)
 {

-  // Usage: recover 64bit UID by default, specify "224" as arg to recover a 224bit UID
-
-  int state = -1;
-  int count = 0;
-  int i, j;
-  // worst case with GraphTraceLen=64000 is < 4096
-  // under normal conditions it's < 2048
-  uint8_t rawbits[4096];
-  int rawbit = 0;
-  int worst = 0, worstPos = 0;
-  PrintAndLog("Expecting a bit less than %d raw bits", GraphTraceLen / 32);
-  for (i = 0; i < GraphTraceLen-1; i += 2) {
-    count += 1;
-    if ((GraphBuffer[i] > GraphBuffer[i + 1]) && (state != 1)) {
-      if (state == 0) {
-        for (j = 0; j <  count - 8; j += 16) {
-          rawbits[rawbit++] = 0;
-        }
-        if ((abs(count - j)) > worst) {
-          worst = abs(count - j);
-          worstPos = i;
-        }
-      }
-      state = 1;
-      count = 0;
-    } else if ((GraphBuffer[i] < GraphBuffer[i + 1]) && (state != 0)) {
-      if (state == 1) {
-        for (j = 0; j <  count - 8; j += 16) {
-          rawbits[rawbit++] = 1;
-        }
-        if ((abs(count - j)) > worst) {
-          worst = abs(count - j);
-          worstPos = i;
-        }
-      }
-      state = 0;
-      count = 0;
-    }
-  }
-  PrintAndLog("Recovered %d raw bits", rawbit);
-  PrintAndLog("worst metric (0=best..7=worst): %d at pos %d", worst, worstPos);
-
-  // Finding the start of a UID
-  int uidlen, long_wait;
-  if (strcmp(Cmd, "224") == 0) {
-    uidlen = 224;
-    long_wait = 30;
-  } else {
-    uidlen = 64;
-    long_wait = 29;
-  }
-  int start;
-  int first = 0;
-  for (start = 0; start <= rawbit - uidlen; start++) {
-    first = rawbits[start];
-    for (i = start; i < start + long_wait; i++) {
-      if (rawbits[i] != first) {
-        break;
-      }
-    }
-    if (i == (start + long_wait)) {
-      break;
-    }
-  }
-  if (start == rawbit - uidlen + 1) {
-    PrintAndLog("nothing to wait for");
-    return 0;
-  }
+       // Usage: recover 64bit UID by default, specify "224" as arg to recover a 224bit UID
+
+       int state = -1;
+       int count = 0;
+       int i, j;
+
+       // worst case with GraphTraceLen=64000 is < 4096
+       // under normal conditions it's < 2048
+
+       uint8_t rawbits[4096];
+       int rawbit = 0;
+       int worst = 0, worstPos = 0;
+ // PrintAndLog("Expecting a bit less than %d raw bits", GraphTraceLen / 32);
+       for (i = 0; i < GraphTraceLen-1; i += 2) {
+               count += 1;
+               if ((GraphBuffer[i] > GraphBuffer[i + 1]) && (state != 1)) {
+                       if (state == 0) {
+                               for (j = 0; j <  count - 8; j += 16) {
+                                       rawbits[rawbit++] = 0;
+                               }
+                               if ((abs(count - j)) > worst) {
+                                       worst = abs(count - j);
+                                       worstPos = i;
+                               }
+                       }
+                       state = 1;
+                       count = 0;
+                       } else if ((GraphBuffer[i] < GraphBuffer[i + 1]) && (state != 0)) {
+                               if (state == 1) {
+                                       for (j = 0; j <  count - 8; j += 16) {
+                                               rawbits[rawbit++] = 1;
+                                       }
+                                       if ((abs(count - j)) > worst) {
+                                               worst = abs(count - j);
+                                               worstPos = i;
+                                       }
+                               }
+                               state = 0;
+                               count = 0;
+                       }
+       }
+  
+       if (rawbit>0){
+               PrintAndLog("Recovered %d raw bits, expected: %d", rawbit, GraphTraceLen/32);
+               PrintAndLog("worst metric (0=best..7=worst): %d at pos %d", worst, worstPos);
+       } else {
+               return 0;
+       }

 
 

-  // Inverting signal if needed
-  if (first == 1) {
-    for (i = start; i < rawbit; i++) {
-      rawbits[i] = !rawbits[i];
-    }
-  }
+       // Finding the start of a UID
+       int uidlen, long_wait;
+       if (strcmp(Cmd, "224") == 0) {
+               uidlen = 224;
+               long_wait = 30;
+       } else {
+               uidlen = 64;
+               long_wait = 29;
+       }

 
 

-  // Dumping UID
-  uint8_t bits[224];
-  char showbits[225];
-  showbits[uidlen]='\0';
-  int bit;
-  i = start;
-  int times = 0;
-  if (uidlen > rawbit) {
-    PrintAndLog("Warning: not enough raw bits to get a full UID");
-    for (bit = 0; bit < rawbit; bit++) {
-      bits[bit] = rawbits[i++];
-      // As we cannot know the parity, let's use "." and "/"
-      showbits[bit] = '.' + bits[bit];
-    }
-    showbits[bit+1]='\0';
-    PrintAndLog("Partial UID=%s", showbits);
-    return 0;
-  } else {
-    for (bit = 0; bit < uidlen; bit++) {
-      bits[bit] = rawbits[i++];
-      showbits[bit] = '0' + bits[bit];
-    }
-    times = 1;
-  }
+       int start;
+       int first = 0;
+       for (start = 0; start <= rawbit - uidlen; start++) {
+               first = rawbits[start];
+               for (i = start; i < start + long_wait; i++) {
+                       if (rawbits[i] != first) {
+                               break;
+                       }
+               }
+               if (i == (start + long_wait)) {
+                       break;
+               }
+       }

   
   

-  //convert UID to HEX
-  uint32_t uid1, uid2, uid3, uid4, uid5, uid6, uid7;
-  int idx;
-  uid1=0;
-  uid2=0;
-  if (uidlen==64){
-    for( idx=0; idx<64; idx++) {
-        if (showbits[idx] == '0') {
-        uid1=(uid1<<1)|(uid2>>31);
-        uid2=(uid2<<1)|0;
-        } else {
-        uid1=(uid1<<1)|(uid2>>31);
-        uid2=(uid2<<1)|1;
-        } 
-      }
-    PrintAndLog("UID=%s (%x%08x)", showbits, uid1, uid2);
-  }
-  else {
-    uid3=0;
-    uid4=0;
-    uid5=0;
-    uid6=0;
-    uid7=0;
-    for( idx=0; idx<224; 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 (showbits[idx] == '0') uid7=(uid7<<1)|0;
-        else uid7=(uid7<<1)|1;
-      }
-    PrintAndLog("UID=%s (%x%08x%08x%08x%08x%08x%08x)", showbits, uid1, uid2, uid3, uid4, uid5, uid6, uid7);
-  }
+       if (start == rawbit - uidlen + 1) {
+               //PrintAndLog("nothing to wait for");
+               return 0;
+       }

 
 

-  // Checking UID against next occurrences
-  for (; i + uidlen <= rawbit;) {
-    int failed = 0;
-    for (bit = 0; bit < uidlen; bit++) {
-      if (bits[bit] != rawbits[i++]) {
-        failed = 1;
-        break;
-      }
-    }
-    if (failed == 1) {
-      break;
-    }
-    times += 1;
-  }
-  PrintAndLog("Occurrences: %d (expected %d)", times, (rawbit - start) / uidlen);
-
-  // Remodulating for tag cloning
-  GraphTraceLen = 32*uidlen;
-  i = 0;
-  int phase = 0;
-  for (bit = 0; bit < uidlen; bit++) {
-    if (bits[bit] == 0) {
-      phase = 0;
-    } else {
-      phase = 1;
-    }
-    int j;
-    for (j = 0; j < 32; j++) {
-      GraphBuffer[i++] = phase;
-      phase = !phase;
-    }
-  }
+       // Inverting signal if needed
+       if (first == 1) {
+               for (i = start; i < rawbit; i++) {
+                       rawbits[i] = !rawbits[i];
+               }
+       }

 
 

-  RepaintGraphWindow();
-  return 0;
+       // Dumping UID
+       uint8_t bits[224] = {0x00};
+       char showbits[225] = {0x00};
+       int bit;
+       i = start;
+       int times = 0;
+       
+       if (uidlen > rawbit) {
+               PrintAndLog("Warning: not enough raw bits to get a full UID");
+               for (bit = 0; bit < rawbit; bit++) {
+                       bits[bit] = rawbits[i++];
+                       // As we cannot know the parity, let's use "." and "/"
+                       showbits[bit] = '.' + bits[bit];
+               }
+               showbits[bit+1]='\0';
+               PrintAndLog("Partial UID=%s", showbits);
+               return 0;
+       } else {
+               for (bit = 0; bit < uidlen; bit++) {
+                       bits[bit] = rawbits[i++];
+                       showbits[bit] = '0' + bits[bit];
+               }
+               times = 1;
+       }
+  
+       //convert UID to HEX
+       uint32_t uid1, uid2, uid3, uid4, uid5, uid6, uid7;
+       int idx;
+       uid1 = uid2 = 0;
+       
+       if (uidlen == 64){
+               for( idx=0; idx<64; idx++) {
+                       if (showbits[idx] == '0') {
+                               uid1 = (uid1<<1) | (uid2>>31);
+                               uid2 = (uid2<<1) | 0;
+                       } else {
+                               uid1 = (uid1<<1) | (uid2>>31);
+                               uid2 = (uid2<<1) | 1;
+                       }
+               }
+               PrintAndLog("UID=%s (%x%08x)", showbits, uid1, uid2);
+       }
+       else {
+               uid3 = uid4 = uid5 = uid6 = uid7 = 0;
+
+               for( idx=0; idx<224; 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 (showbits[idx] == '0') 
+                               uid7 = (uid7<<1) | 0;
+                       else 
+                               uid7 = (uid7<<1) | 1;
+               }
+               PrintAndLog("UID=%s (%x%08x%08x%08x%08x%08x%08x)", showbits, uid1, uid2, uid3, uid4, uid5, uid6, uid7);
+       }
+
+       // Checking UID against next occurrences
+       int failed = 0;
+       for (; i + uidlen <= rawbit;) {
+               failed = 0;
+               for (bit = 0; bit < uidlen; bit++) {
+                       if (bits[bit] != rawbits[i++]) {
+                               failed = 1;
+                               break;
+                       }
+               }
+               if (failed == 1) {
+                       break;
+               }
+               times += 1;
+       }
+
+       PrintAndLog("Occurrences: %d (expected %d)", times, (rawbit - start) / uidlen);
+
+       // Remodulating for tag cloning
+       // HACK: 2015-01-04 this will have an impact on our new way of seening lf commands (demod) 
+       // since this changes graphbuffer data.
+       GraphTraceLen = 32 * uidlen;
+       i = 0;
+       int phase = 0;
+       for (bit = 0; bit < uidlen; bit++) {
+               if (bits[bit] == 0) {
+                 phase = 0;
+               } else {
+                 phase = 1;
+               }
+               int j;
+               for (j = 0; j < 32; j++) {
+                 GraphBuffer[i++] = phase;
+                 phase = !phase;
+               }
+       }
+
+       RepaintGraphWindow();
+       return 1;

 }
 
 int CmdIndalaClone(const char *Cmd)
 {
 }
 
 int CmdIndalaClone(const char *Cmd)
 {

-  unsigned int uid1, uid2, uid3, uid4, uid5, uid6, uid7;
-  UsbCommand c;
-  uid1=0;
-  uid2=0;
-  uid3=0;
-  uid4=0;
-  uid5=0;
-  uid6=0;
-  uid7=0;  
-  int n = 0, i = 0;
-
-  if (strchr(Cmd,'l') != 0) {
-    while (sscanf(&Cmd[i++], "%1x", &n ) == 1) {
-      uid1 = (uid1 << 4) | (uid2 >> 28);
-      uid2 = (uid2 << 4) | (uid3 >> 28);
-      uid3 = (uid3 << 4) | (uid4 >> 28);
-      uid4 = (uid4 << 4) | (uid5 >> 28);
-      uid5 = (uid5 << 4) | (uid6 >> 28);
-      uid6 = (uid6 << 4) | (uid7 >> 28);
-       uid7 = (uid7 << 4) | (n & 0xf);
-    }
-    PrintAndLog("Cloning 224bit tag with UID %x%08x%08x%08x%08x%08x%08x", uid1, uid2, uid3, uid4, uid5, uid6, uid7);
-    c.cmd = CMD_INDALA_CLONE_TAG_L;
-    c.d.asDwords[0] = uid1;
-    c.d.asDwords[1] = uid2;
-    c.d.asDwords[2] = uid3;
-    c.d.asDwords[3] = uid4;
-    c.d.asDwords[4] = uid5;
-    c.d.asDwords[5] = uid6;
-    c.d.asDwords[6] = uid7;
-  } 
-  else 
-  {
-    while (sscanf(&Cmd[i++], "%1x", &n ) == 1) {
-      uid1 = (uid1 << 4) | (uid2 >> 28);
-      uid2 = (uid2 << 4) | (n & 0xf);
-    }
-    PrintAndLog("Cloning 64bit tag with UID %x%08x", uid1, uid2);
-    c.cmd = CMD_INDALA_CLONE_TAG;
-    c.arg[0] = uid1;
-    c.arg[1] = uid2;
-  }
+       UsbCommand c;
+       unsigned int uid1, uid2, uid3, uid4, uid5, uid6, uid7;
+
+       uid1 =  uid2 = uid3 = uid4 = uid5 = uid6 = uid7 = 0;
+       int n = 0, i = 0;
+
+       if (strchr(Cmd,'l') != 0) {
+               while (sscanf(&Cmd[i++], "%1x", &n ) == 1) {
+                       uid1 = (uid1 << 4) | (uid2 >> 28);
+                       uid2 = (uid2 << 4) | (uid3 >> 28);
+                       uid3 = (uid3 << 4) | (uid4 >> 28);
+                       uid4 = (uid4 << 4) | (uid5 >> 28);
+                       uid5 = (uid5 << 4) | (uid6 >> 28);
+                       uid6 = (uid6 << 4) | (uid7 >> 28);
+                       uid7 = (uid7 << 4) | (n & 0xf);
+               }
+               PrintAndLog("Cloning 224bit tag with UID %x%08x%08x%08x%08x%08x%08x", uid1, uid2, uid3, uid4, uid5, uid6, uid7);
+               c.cmd = CMD_INDALA_CLONE_TAG_L;
+               c.d.asDwords[0] = uid1;
+               c.d.asDwords[1] = uid2;
+               c.d.asDwords[2] = uid3;
+               c.d.asDwords[3] = uid4;
+               c.d.asDwords[4] = uid5;
+               c.d.asDwords[5] = uid6;
+               c.d.asDwords[6] = uid7;
+       } else {
+               while (sscanf(&Cmd[i++], "%1x", &n ) == 1) {
+                       uid1 = (uid1 << 4) | (uid2 >> 28);
+                       uid2 = (uid2 << 4) | (n & 0xf);
+               }
+               PrintAndLog("Cloning 64bit tag with UID %x%08x", uid1, uid2);
+               c.cmd = CMD_INDALA_CLONE_TAG;
+               c.arg[0] = uid1;
+               c.arg[1] = uid2;
+       }

 
 

-  SendCommand(&c);
-  return 0;
+       SendCommand(&c);
+       return 0;

 }
 
 int CmdLFRead(const char *Cmd)
 {
 }
 
 int CmdLFRead(const char *Cmd)
 {

-  UsbCommand c = {CMD_ACQUIRE_RAW_ADC_SAMPLES_125K};
-  // 'h' means higher-low-frequency, 134 kHz
-  if(*Cmd == 'h') {
-    c.arg[0] = 1;
-  } else if (*Cmd == '\0') {
-    c.arg[0] = 0;
-  } else if (sscanf(Cmd, "%"lli, &c.arg[0]) != 1) {
-    PrintAndLog("Samples 1: 'lf read'");
-       PrintAndLog("        2: 'lf read h'");
-       PrintAndLog("        3: 'lf read <divisor>'");
-    return 0;
-  }
-  SendCommand(&c);
-  WaitForResponse(CMD_ACK,NULL);
-  return 0;
+       UsbCommand c = {CMD_ACQUIRE_RAW_ADC_SAMPLES_125K};
+
+       // 'h' means higher-low-frequency, 134 kHz
+       if(*Cmd == 'h') {
+               c.arg[0] = 1;
+       } else if (*Cmd == '\0') {
+               c.arg[0] = 0;
+       } else if (sscanf(Cmd, "%"lli, &c.arg[0]) != 1) {
+               PrintAndLog("Samples 1: 'lf read'");
+               PrintAndLog("        2: 'lf read h'");
+               PrintAndLog("        3: 'lf read <divisor>'");
+               return 0;
+       }
+       SendCommand(&c);
+       WaitForResponse(CMD_ACK,NULL);
+
+       CmdSamples("");
+       ShowGraphWindow();
+       return 0;

 }
 
 static void ChkBitstream(const char *str)
 {
 }
 
 static void ChkBitstream(const char *str)
 {

-  int i;
-
-  /* convert to bitstream if necessary */
-  for (i = 0; i < (int)(GraphTraceLen / 2); i++)
-  {
-    if (GraphBuffer[i] > 1 || GraphBuffer[i] < 0)
-    {
-      CmdBitstream(str);
-      break;
-    }
-  }
+       int i;
+
+       /* convert to bitstream if necessary */
+       for (i = 0; i < (int)(GraphTraceLen / 2); i++){
+               if (GraphBuffer[i] > 1 || GraphBuffer[i] < 0) {
+                       CmdBitstream(str);
+                       break;
+               }
+       }

 }
 
 int CmdLFSim(const char *Cmd)
 {
 }
 
 int CmdLFSim(const char *Cmd)
 {

-  int i,j;
-  
-  static int gap;
+       int i,j;
+       static int gap;

 
 

-  sscanf(Cmd, "%i", &gap);
+       sscanf(Cmd, "%i", &gap);

 
 

-  /* convert to bitstream if necessary */
-  ChkBitstream(Cmd);
+       /* convert to bitstream if necessary */
+       ChkBitstream(Cmd);

 
 

-  printf("Sending [%d bytes]", GraphTraceLen);
-  for (i = 0; i < GraphTraceLen; i += USB_CMD_DATA_SIZE) {
-    UsbCommand c={CMD_DOWNLOADED_SIM_SAMPLES_125K, {i, 0, 0}};
+       printf("Sending [%d bytes]", GraphTraceLen);
+       for (i = 0; i < GraphTraceLen; i += USB_CMD_DATA_SIZE) {
+               UsbCommand c={CMD_DOWNLOADED_SIM_SAMPLES_125K, {i, 0, 0}};

 
 

-    for (j = 0; j < USB_CMD_DATA_SIZE; j++) {
-      c.d.asBytes[j] = GraphBuffer[i+j];
-    }
-    SendCommand(&c);
-    WaitForResponse(CMD_ACK,NULL);
-       printf(".");
-  }
-  printf("\n");
-  PrintAndLog("Starting to simulate");
-  UsbCommand c = {CMD_SIMULATE_TAG_125K, {GraphTraceLen, gap, 0}};
-  SendCommand(&c);
-  return 0;
+               for (j = 0; j < USB_CMD_DATA_SIZE; j++) {
+                       c.d.asBytes[j] = GraphBuffer[i+j];
+               }
+               SendCommand(&c);
+               WaitForResponse(CMD_ACK,NULL);
+               printf(".");
+       }
+       
+       printf("\n");
+       PrintAndLog("Starting to simulate");
+       UsbCommand c = {CMD_SIMULATE_TAG_125K, {GraphTraceLen, gap, 0}};
+       SendCommand(&c);
+       return 0;

 }
 
 int CmdLFSimBidir(const char *Cmd)
 {
 }
 
 int CmdLFSimBidir(const char *Cmd)
 {

-  /* Set ADC to twice the carrier for a slight supersampling */
+  // Set ADC to twice the carrier for a slight supersampling
+  // HACK: not implemented in ARMSRC.
+  PrintAndLog("Not implemented yet.");

   UsbCommand c = {CMD_LF_SIMULATE_BIDIR, {47, 384, 0}};
   SendCommand(&c);
   return 0;
   UsbCommand c = {CMD_LF_SIMULATE_BIDIR, {47, 384, 0}};
   SendCommand(&c);
   return 0;


@@ -429,63 +434,57 @@ int CmdLFSimBidir(const char *Cmd)
 /* simulate an LF Manchester encoded tag with specified bitstream, clock rate and inter-id gap */
 int CmdLFSimManchester(const char *Cmd)
 {
 /* simulate an LF Manchester encoded tag with specified bitstream, clock rate and inter-id gap */
 int CmdLFSimManchester(const char *Cmd)
 {

-  static int clock, gap;
-  static char data[1024], gapstring[8];
+       static int clock, gap;
+       static char data[1024], gapstring[8];

 
 

-  /* get settings/bits */
-  sscanf(Cmd, "%i %s %i", &clock, &data[0], &gap);
+       sscanf(Cmd, "%i %s %i", &clock, &data[0], &gap);

 
 

-  /* clear our graph */
-  ClearGraph(0);
+       ClearGraph(0);

 
 

-  /* fill it with our bitstream */
-  for (int i = 0; i < strlen(data) ; ++i)
-    AppendGraph(0, clock, data[i]- '0');
+       for (int i = 0; i < strlen(data) ; ++i)
+               AppendGraph(0, clock, data[i]- '0');

 
 

-  /* modulate */
-  CmdManchesterMod("");
+       CmdManchesterMod("");

 
 

-  /* show what we've done */
-  RepaintGraphWindow();
+       RepaintGraphWindow();

 
 

-  /* simulate */
-  sprintf(&gapstring[0], "%i", gap);
-  CmdLFSim(gapstring);
-  return 0;
+       sprintf(&gapstring[0], "%i", gap);
+       CmdLFSim(gapstring);
+       return 0;

 }
 
 int CmdLFSnoop(const char *Cmd)
 {
 }
 
 int CmdLFSnoop(const char *Cmd)
 {

-  UsbCommand c = {CMD_LF_SNOOP_RAW_ADC_SAMPLES};
-  // 'h' means higher-low-frequency, 134 kHz
-  c.arg[0] = 0;
-  c.arg[1] = -1;
-  if (*Cmd == 0) {
-    // empty
-  } else if (*Cmd == 'l') {
-    sscanf(Cmd, "l %"lli, &c.arg[1]);
-  } else if(*Cmd == 'h') {
-    c.arg[0] = 1;
-    sscanf(Cmd, "h %"lli, &c.arg[1]);
-  } else if (sscanf(Cmd, "%"lli" %"lli, &c.arg[0], &c.arg[1]) < 1) {
-    PrintAndLog("use 'snoop' or 'snoop {l,h} [trigger threshold]', or 'snoop <divisor> [trigger threshold]'");
-    return 0;
-  }
-  SendCommand(&c);
-  WaitForResponse(CMD_ACK,NULL);
-  
-  size_t BUFF_SIZE = 8000;
-  uint8_t data[BUFF_SIZE];
+       UsbCommand c = {CMD_LF_SNOOP_RAW_ADC_SAMPLES};
+
+       // 'h' means higher-low-frequency, 134 kHz
+       c.arg[0] = 0;
+       c.arg[1] = -1;
+
+       if (*Cmd == 'l') {
+               sscanf(Cmd, "l %"lli, &c.arg[1]);
+       } else if (*Cmd == 'h') {
+               c.arg[0] = 1;
+               sscanf(Cmd, "h %"lli, &c.arg[1]);
+       } else if (sscanf(Cmd, "%"lli" %"lli, &c.arg[0], &c.arg[1]) < 1) {
+               PrintAndLog("usage 1:  snoop");
+               PrintAndLog("      2:  snoop {l,h} [trigger threshold]");
+               PrintAndLog("      3:  snoop <divisor> [trigger threshold]");
+               return 0;
+       }

 
 

-  GetFromBigBuf(data,BUFF_SIZE,3560);  //3560 -- should be offset..
-  WaitForResponseTimeout(CMD_ACK,NULL, 1500);
+       SendCommand(&c);
+       WaitForResponse(CMD_ACK,NULL);

 
 

-       for (int j = 0; j < BUFF_SIZE; j++) {
-               GraphBuffer[j] = ((int)data[j]);
-       }
-       GraphTraceLen = BUFF_SIZE;
-  
-  return 0;
+       #define BUFF_SIZE 8000
+       uint8_t data[BUFF_SIZE] = {0x00};
+
+       GetFromBigBuf(data,BUFF_SIZE,0);
+       WaitForResponseTimeout(CMD_ACK,NULL, 1500);
+
+       SetGraphBuf(data, BUFF_SIZE);
+
+       return 0;

 }
 
 int CmdVchDemod(const char *Cmd)
 }
 
 int CmdVchDemod(const char *Cmd)


@@ -564,6 +563,57 @@ int CmdVchDemod(const char *Cmd)
   return 0;
 }
 
   return 0;
 }
 

+//by marshmellow
+int CmdLFfind(const char *Cmd)
+{
+       int ans = 0;
+       char cmdp = param_getchar(Cmd, 0);
+       
+       if (strlen(Cmd) > 1 || cmdp == 'h' || cmdp == 'H') {
+               PrintAndLog("Usage:  lf search <0|1>");
+               PrintAndLog("     <use data from Graphbuffer>, if not set, try reading data from tag.");
+               PrintAndLog("");
+               PrintAndLog("    sample: lf search");
+               PrintAndLog("          : lf search 1");
+               return 0;
+       }
+
+       if (!offline || (cmdp != '1') ){
+               ans = CmdLFRead("");
+       } else if (GraphTraceLen < 1000) {
+               PrintAndLog("Data in Graphbuffer was too small.");
+               return 0;
+       }
+
+       PrintAndLog("Checking for known tags:");
+
+       ans = Cmdaskmandemod("");
+       PrintAndLog("ASK_MAN: %s", (ans) ? "YES":"NO" );
+
+       ans = CmdFSKdemodHID("");
+       PrintAndLog("HID: %s", (ans) ? "YES":"NO" );
+
+       ans = CmdFSKdemodIO("");
+       PrintAndLog("IO prox: %s", (ans) ? "YES":"NO" );
+
+       ans = CmdIndalaDemod("");
+       PrintAndLog("Indala (64): %s", (ans) ? "YES":"NO" );
+
+       ans = CmdIndalaDemod("224");
+       PrintAndLog("Indala (224): %s", (ans) ? "YES":"NO" );
+
+       // ans = CmdVchDemod("");
+       // PrintAndLog("VeriChip: %s", (ans) ? "YES":"NO" );
+
+       // ans = CmdFlexdemod("");
+       // PrintAndLog("FlexPass: %s", (ans) ? "YES":"NO" );
+       
+       if (!ans)
+               PrintAndLog("No Known Tags Found!\n");
+
+       return 0;
+}
+

 static command_t CommandTable[] = 
 {
   {"help",        CmdHelp,            1, "This help"},
 static command_t CommandTable[] = 
 {
   {"help",        CmdHelp,            1, "This help"},


@@ -576,12 +626,13 @@ static command_t CommandTable[] =
 
   
   {"read",        CmdLFRead,          0, "['h' or <divisor>] -- Read 125/134 kHz LF ID-only tag (option 'h' for 134, alternatively: f=12MHz/(divisor+1))"},
 
   
   {"read",        CmdLFRead,          0, "['h' or <divisor>] -- Read 125/134 kHz LF ID-only tag (option 'h' for 134, alternatively: f=12MHz/(divisor+1))"},

+  {"search",      CmdLFfind,          1, "Read and Search for valid known tag (in offline mode it you can load first then search)"},

   {"sim",         CmdLFSim,           0, "[GAP] -- Simulate LF tag from buffer with optional GAP (in microseconds)"},
   {"simbidir",    CmdLFSimBidir,      0, "Simulate LF tag (with bidirectional data transmission between reader and tag)"},
   {"simman",      CmdLFSimManchester, 0, "<Clock> <Bitstream> [GAP] Simulate arbitrary Manchester LF tag"},
   {"snoop",       CmdLFSnoop,         0, "['l'|'h'|<divisor>] [trigger threshold]-- Snoop LF (l:125khz, h:134khz)"},
   
   {"sim",         CmdLFSim,           0, "[GAP] -- Simulate LF tag from buffer with optional GAP (in microseconds)"},
   {"simbidir",    CmdLFSimBidir,      0, "Simulate LF tag (with bidirectional data transmission between reader and tag)"},
   {"simman",      CmdLFSimManchester, 0, "<Clock> <Bitstream> [GAP] Simulate arbitrary Manchester LF tag"},
   {"snoop",       CmdLFSnoop,         0, "['l'|'h'|<divisor>] [trigger threshold]-- Snoop LF (l:125khz, h:134khz)"},
   

-  {"avid",        CmdLFAWID26,        1, "{ AWID26 tags }"},
+  {"awid26",        CmdLFAWID26,        1, "{ AWID26 tags }"},

   {"em4x",        CmdLFEM4X,          1, "{ EM4X tags }"},      
   {"hid",         CmdLFHID,           1, "{ HID tags }"},
   {"hitag",       CmdLFHitag,         1, "{ Hitag tags and transponders }"},
   {"em4x",        CmdLFEM4X,          1, "{ EM4X tags }"},      
   {"hid",         CmdLFHID,           1, "{ HID tags }"},
   {"hitag",       CmdLFHitag,         1, "{ Hitag tags and transponders }"},