Merge pull request #248 from marshmellow42/master

[proxmark3-svn] / client / util.c

diff --git a/client/util.c b/client/util.c
index 81b2d844f4376bdda269f6e3850a5c9925915216..d07c915cefbf181a1406efc64359e2b629471572 100644 (file)
--- a/client/util.c
+++ b/client/util.c
@@ -27,6 +27,7 @@
 #ifndef _WIN32
 #include <termios.h>
 #include <sys/ioctl.h> 
 #ifndef _WIN32
 #include <termios.h>
 #include <sys/ioctl.h> 

+#include <unistd.h>

 
 int ukbhit(void)
 {
 
 int ukbhit(void)
 {


@@ -34,19 +35,18 @@ int ukbhit(void)
   int error;
   static struct termios Otty, Ntty;
 
   int error;
   static struct termios Otty, Ntty;
 

-
-  if ( tcgetattr( 0, &Otty) == -1 ) return -1;
+  if ( tcgetattr(STDIN_FILENO, &Otty) == -1 ) return -1;

   Ntty = Otty;
 
   Ntty = Otty;
 

-  Ntty.c_iflag          = 0;       /* input mode                */
-  Ntty.c_oflag          = 0;       /* output mode               */
-  Ntty.c_lflag         &= ~ICANON; /* raw mode */
-  Ntty.c_cc[VMIN]       = CMIN;    /* minimum time to wait      */
-  Ntty.c_cc[VTIME]      = CTIME;   /* minimum characters to wait for */
-
-  if (0 == (error = tcsetattr(0, TCSANOW, &Ntty))) {
-    error += ioctl(0, FIONREAD, &cnt);
-    error += tcsetattr(0, TCSANOW, &Otty);
+  Ntty.c_iflag          = 0x0000;   // input mode
+  Ntty.c_oflag          = 0x0000;   // output mode
+  Ntty.c_lflag         &= ~ICANON;  // control mode = raw
+  Ntty.c_cc[VMIN]       = 1;        // return if at least 1 character is in the queue
+  Ntty.c_cc[VTIME]      = 0;               // no timeout. Wait forever
+  
+  if (0 == (error = tcsetattr(STDIN_FILENO, TCSANOW, &Ntty))) {   // set new attributes
+    error += ioctl(STDIN_FILENO, FIONREAD, &cnt);                 // get number of characters availabe
+    error += tcsetattr(STDIN_FILENO, TCSANOW, &Otty);             // reset attributes

   }
 
   return ( error == 0 ? cnt : -1 );
   }
 
   return ( error == 0 ? cnt : -1 );


@@ -257,6 +257,15 @@ void num_to_bytebitsLSBF(uint64_t n, size_t len, uint8_t *dest) {
        }
 }
 
        }
 }
 

+// Swap bit order on a uint32_t value.  Can be limited by nrbits just use say 8bits reversal
+// And clears the rest of the bits.
+uint32_t SwapBits(uint32_t value, int nrbits) {
+       uint32_t newvalue = 0;
+       for(int i = 0; i < nrbits; i++) {
+               newvalue ^= ((value >> i) & 1) << (nrbits - 1 - i);
+       }
+       return newvalue;
+}

 
 // aa,bb,cc,dd,ee,ff,gg,hh, ii,jj,kk,ll,mm,nn,oo,pp
 // to
 
 // aa,bb,cc,dd,ee,ff,gg,hh, ii,jj,kk,ll,mm,nn,oo,pp
 // to