contrib/opie/libopie/btoh.c

   1 /* btoh.c: The opiebtoh() library function.
   2
   3 %%% copyright-cmetz-96
   4 This software is Copyright 1996-2001 by Craig Metz, All Rights Reserved.
   5 The Inner Net License Version 3 applies to this software.
   6 You should have received a copy of the license with this software. If
   7 you didn't get a copy, you may request one from <license@inner.net>.
   8
   9         History:
  10
  11         Created by cmetz for OPIE 2.3.
  12 */
  13
  14 #include "opie_cfg.h"
  15 #include "opie.h"
  16
  17 static char hextochar[16] =
  18 {'0','1','2','3','4','5','6','7','8','9','A','B','C','D','E','F'};
  19
  20 char *opiebtoh FUNCTION((out, in), char *out AND struct opie_otpkey *inkey)
  21 {
  22   int i;
  23   char *c = out;
  24   unsigned char *in = (unsigned char *)inkey;
  25
  26   for (i = 0; i < 4; i++) {
  27     *(c++) = hextochar[((*in) >> 4) & 0x0f];
  28     *(c++) = hextochar[(*in++) & 0x0f];
  29     *(c++) = hextochar[((*in) >> 4) & 0x0f];
  30     *(c++) = hextochar[(*in++) & 0x0f];
  31     *(c++) = ' ';
  32   }
  33   *(--c) = 0;
  34
  35   return out;
  36 }