Merge branch 'master' into GenericTracing

[proxmark3-svn] / armsrc / util.c

diff --git a/armsrc/util.c b/armsrc/util.c
index a250e5293d5e3f46e0c755b82583cbb5071789cb..4948fce8f8a19146436d220f8aa5475335736f6c 100644 (file)
--- a/armsrc/util.c
+++ b/armsrc/util.c
@@ -12,6 +12,28 @@
 #include "util.h"
 #include "string.h"
 #include "apps.h"
+#include "BigBuf.h"
+
+int tracing = TRUE;
+
+
+void print_result(char *name, uint8_t *buf, size_t len) {
+   uint8_t *p = buf;
+
+   if ( len % 16 == 0 ) {
+          for(; p-buf < len; p += 16)
+       Dbprintf("[%s:%d/%d] %02x %02x %02x %02x %02x %02x %02x %02x %02x %02x %02x %02x %02x %02x %02x %02x",
+                               name,
+                               p-buf,
+                               len,
+                               p[0], p[1], p[2], p[3], p[4], p[5], p[6], p[7],p[8], p[9], p[10], p[11], p[12], p[13], p[14], p[15]
+          );
+   }
+   else {
+   for(; p-buf < len; p += 8)
+       Dbprintf("[%s:%d/%d] %02x %02x %02x %02x %02x %02x %02x %02x", name, p-buf, len, p[0], p[1], p[2], p[3], p[4], p[5], p[6], p[7]);
+   }
+}
 
 size_t nbytes(size_t nbits) {
        return (nbits/8)+((nbits%8)>0);
@@ -45,6 +67,26 @@ uint64_t bytes_to_num(uint8_t* src, size_t len)
        return num;
 }
 
+// RotateLeft - Ultralight, Desfire
+void rol(uint8_t *data, const size_t len){
+    uint8_t first = data[0];
+    for (size_t i = 0; i < len-1; i++) {
+        data[i] = data[i+1];
+    }
+    data[len-1] = first;
+}
+void lsl (uint8_t *data, size_t len) {
+    for (size_t n = 0; n < len - 1; n++) {
+        data[n] = (data[n] << 1) | (data[n+1] >> 7);
+    }
+    data[len - 1] <<= 1;
+}
+
+int32_t le24toh (uint8_t data[3])
+{
+    return (data[2] << 16) | (data[1] << 8) | data[0];
+}
+
 void LEDsoff()
 {
        LED_A_OFF();
@@ -225,29 +267,29 @@ void FormatVersionInformation(char *dst, int len, const char *prefix, void *vers
 {
        struct version_information *v = (struct version_information*)version_information;
        dst[0] = 0;
-       strncat(dst, prefix, len);
+       strncat(dst, prefix, len-1);
        if(v->magic != VERSION_INFORMATION_MAGIC) {
-               strncat(dst, "Missing/Invalid version information", len);
+               strncat(dst, "Missing/Invalid version information", len - strlen(dst) - 1);
                return;
        }
        if(v->versionversion != 1) {
-               strncat(dst, "Version information not understood", len);
+               strncat(dst, "Version information not understood", len - strlen(dst) - 1);
                return;
        }
        if(!v->present) {
-               strncat(dst, "Version information not available", len);
+               strncat(dst, "Version information not available", len - strlen(dst) - 1);
                return;
        }
 
-       strncat(dst, v->gitversion, len);
+       strncat(dst, v->gitversion, len - strlen(dst) - 1);
        if(v->clean == 0) {
-               strncat(dst, "-unclean", len);
+               strncat(dst, "-unclean", len - strlen(dst) - 1);
        } else if(v->clean == 2) {
-               strncat(dst, "-suspect", len);
+               strncat(dst, "-suspect", len - strlen(dst) - 1);
        }
 
-       strncat(dst, " ", len);
-       strncat(dst, v->buildtime, len);
+       strncat(dst, " ", len - strlen(dst) - 1);
+       strncat(dst, v->buildtime, len - strlen(dst) - 1);
 }
 
 //  -------------------------------------------------------------------------
@@ -387,5 +429,91 @@ uint32_t RAMFUNC GetCountSspClk(){
                return tmp_count;
        }
 }
+void iso14a_clear_trace() {
+       clear_trace();
+}
+
+void iso14a_set_tracing(bool enable) {
+       set_tracing(enable);
+}
+
+void clear_trace() {
+       uint8_t *trace = BigBuf_get_addr();
+       uint16_t max_traceLen = BigBuf_max_traceLen();
+       memset(trace, 0x44, max_traceLen);
+       traceLen = 0;
+}
+
+void set_tracing(bool enable) {
+       tracing = enable;
+}
+
+/**
+  This is a function to store traces. All protocols can use this generic tracer-function.
+  The traces produced by calling this function can be fetched on the client-side
+  by 'hf list raw', alternatively 'hf list <proto>' for protocol-specific
+  annotation of commands/responses.
 
+**/
+bool RAMFUNC LogTrace(const uint8_t *btBytes, uint16_t iLen, uint32_t timestamp_start, uint32_t timestamp_end, uint8_t *parity, bool readerToTag)
+{
+       if (!tracing) return FALSE;
+
+       uint8_t *trace = BigBuf_get_addr();
+
+       uint16_t num_paritybytes = (iLen-1)/8 + 1;      // number of valid paritybytes in *parity
+       uint16_t duration = timestamp_end - timestamp_start;
+
+       // Return when trace is full
+       uint16_t max_traceLen = BigBuf_max_traceLen();
+
+       if (traceLen + sizeof(iLen) + sizeof(timestamp_start) + sizeof(duration) + num_paritybytes + iLen >= max_traceLen) {
+               tracing = FALSE;        // don't trace any more
+               return FALSE;
+       }
+       // Traceformat:
+       // 32 bits timestamp (little endian)
+       // 16 bits duration (little endian)
+       // 16 bits data length (little endian, Highest Bit used as readerToTag flag)
+       // y Bytes data
+       // x Bytes parity (one byte per 8 bytes data)
+
+       // timestamp (start)
+       trace[traceLen++] = ((timestamp_start >> 0) & 0xff);
+       trace[traceLen++] = ((timestamp_start >> 8) & 0xff);
+       trace[traceLen++] = ((timestamp_start >> 16) & 0xff);
+       trace[traceLen++] = ((timestamp_start >> 24) & 0xff);
+
+       // duration
+       trace[traceLen++] = ((duration >> 0) & 0xff);
+       trace[traceLen++] = ((duration >> 8) & 0xff);
+
+       // data length
+       trace[traceLen++] = ((iLen >> 0) & 0xff);
+       trace[traceLen++] = ((iLen >> 8) & 0xff);
+
+       // readerToTag flag
+       if (!readerToTag) {
+               trace[traceLen - 1] |= 0x80;
+       }
+
+       // data bytes
+       if (btBytes != NULL && iLen != 0) {
+               memcpy(trace + traceLen, btBytes, iLen);
+       }
+       traceLen += iLen;
+
+       // parity bytes
+       if (parity != NULL && iLen != 0) {
+               memcpy(trace + traceLen, parity, num_paritybytes);
+       }
+       traceLen += num_paritybytes;
+
+       if(traceLen +4 < max_traceLen)
+       {       //If it hadn't been cleared, for whatever reason..
+               memset(trace+traceLen,0x44, 4);
+       }
+
+       return TRUE;
+}