contrib/opie/libopie/keycrunch.c

   1 /* keycrunch.c: The opiekeycrunch() 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         Modified by cmetz for OPIE 2.4. Use struct opie_otpkey for arg.
  12         Created by cmetz for OPIE 2.3 using the old keycrunch.c as a guide.
  13 */
  14
  15 #include "opie_cfg.h"
  16
  17 #if HAVE_STRING_H
  18 #include <string.h>
  19 #endif /* HAVE_STRING_H */
  20 #if HAVE_STDLIB_H
  21 #include <stdlib.h>
  22 #endif /* HAVE_STDLIB_H */
  23 #include <ctype.h>
  24
  25 #include "opie.h"
  26
  27 int opiekeycrunch FUNCTION((algorithm, result, seed, secret), int algorithm AND
  28 struct opie_otpkey *result AND char *seed AND char *secret)
  29 {
  30   int i, rval = -1;
  31   char *c;
  32
  33   if (!result || !seed || !secret)
  34     return 1;
  35
  36   i = strlen(seed) + strlen(secret);
  37   if (!(c = malloc(i + 1)))
  38     return -1;
  39
  40   {
  41     char *c2 = c;
  42
  43     if (algorithm & 0x10)
  44       while(*c2 = *(secret++)) c2++;
  45
  46     while(*seed)
  47       if (isspace(*(c2++) = tolower(*(seed++))))
  48         goto kcret;
  49
  50     if (!(algorithm & 0x10))
  51       strcpy(c2, secret);
  52   }
  53
  54   opiehashlen(algorithm & 0x0f, c, result, i);
  55   rval = 0;
  56
  57 kcret:
  58   {
  59     char *c2 = c;
  60     while(*c2)
  61       *(c2++) = 0;
  62   }
  63
  64   free(c);
  65   return rval;
  66 }