lib/hcrypto/test_rand.c

   1 /*
   2  * Copyright (c) 2007 Kungliga Tekniska Högskolan
   3  * (Royal Institute of Technology, Stockholm, Sweden).
   4  * All rights reserved.
   5  *
   6  * Redistribution and use in source and binary forms, with or without
   7  * modification, are permitted provided that the following conditions
   8  * are met:
   9  *
  10  * 1. Redistributions of source code must retain the above copyright
  11  *    notice, this list of conditions and the following disclaimer.
  12  *
  13  * 2. Redistributions in binary form must reproduce the above copyright
  14  *    notice, this list of conditions and the following disclaimer in the
  15  *    documentation and/or other materials provided with the distribution.
  16  *
  17  * 3. Neither the name of the Institute nor the names of its contributors
  18  *    may be used to endorse or promote products derived from this software
  19  *    without specific prior written permission.
  20  *
  21  * THIS SOFTWARE IS PROVIDED BY THE INSTITUTE AND CONTRIBUTORS ``AS IS'' AND
  22  * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
  23  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
  24  * ARE DISCLAIMED.  IN NO EVENT SHALL THE INSTITUTE OR CONTRIBUTORS BE LIABLE
  25  * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
  26  * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
  27  * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
  28  * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
  29  * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
  30  * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
  31  * SUCH DAMAGE.
  32  */
  33
  34 #ifdef HAVE_CONFIG_H
  35 #include <config.h>
  36 #endif
  37
  38 #ifdef RCSID
  39 RCSID("$Id$");
  40 #endif
  41
  42 #include <stdio.h>
  43
  44 #include <roken.h>
  45 #include <getarg.h>
  46
  47 #include "rand.h"
  48
  49
  50 /*
  51  *
  52  */
  53
  54 static int version_flag;
  55 static int help_flag;
  56 static int len = 1024 * 1024;
  57 static char *rand_method;
  58
  59 static struct getargs args[] = {
  60     { "length", 0,      arg_integer,    &len,
  61       "length", NULL },
  62     { "method", 0,      arg_string,     &rand_method,
  63       "method", NULL },
  64     { "version",        0,      arg_flag,       &version_flag,
  65       "print version", NULL },
  66     { "help",           0,      arg_flag,       &help_flag,
  67       NULL,     NULL }
  68 };
  69
  70 /*
  71  *
  72  */
  73
  74 /*
  75  *
  76  */
  77
  78 static void
  79 usage (int ret)
  80 {
  81     arg_printusage (args,
  82                     sizeof(args)/sizeof(args[0]),
  83                     NULL,
  84                     "out-random-file");
  85     exit (ret);
  86 }
  87
  88 int
  89 main(int argc, char **argv)
  90 {
  91     int idx = 0;
  92     char *buffer;
  93     char path[MAXPATHLEN];
  94
  95     setprogname(argv[0]);
  96
  97     if(getarg(args, sizeof(args) / sizeof(args[0]), argc, argv, &idx))
  98         usage(1);
  99
 100     if (help_flag)
 101         usage(0);
 102
 103     if(version_flag){
 104         print_version(NULL);
 105         exit(0);
 106     }
 107
 108     argc -= idx;
 109     argv += idx;
 110
 111     if (argc < 1)
 112         usage(1);
 113
 114     buffer = emalloc(len);
 115
 116     if (rand_method) {
 117         if (strcasecmp(rand_method, "fortuna") == 0)
 118             RAND_set_rand_method(RAND_fortuna_method());
 119         else if (strcasecmp(rand_method, "unix") == 0)
 120             RAND_set_rand_method(RAND_unix_method());
 121         else if (strcasecmp(rand_method, "egd") == 0)
 122             RAND_set_rand_method(RAND_egd_method());
 123         else
 124             errx(1, "unknown method %s", rand_method);
 125     }
 126
 127     if (RAND_file_name(path, sizeof(path)) == NULL)
 128         errx(1, "RAND_file_name failed");
 129
 130     if (RAND_status() != 1)
 131         errx(1, "random not ready yet");
 132
 133     if (RAND_bytes(buffer, len) != 1)
 134         errx(1, "RAND_bytes");
 135
 136     rk_dumpdata(argv[0], buffer, len);
 137
 138     free(buffer);
 139
 140     if (RAND_write_file("test.file") != 1)
 141         errx(1, "RAND_write_file");
 142     if (RAND_load_file("test.file", 1024) != 1)
 143         errx(1, "RAND_load_file");
 144
 145     return 0;
 146 }