2 * Copyright 1998-2020 The OpenSSL Project Authors. All Rights Reserved.
4 * Licensed under the Apache License 2.0 (the "License"). You may not use
5 * this file except in compliance with the License. You can obtain a copy
6 * in the file LICENSE in the source distribution or at
7 * https://www.openssl.org/source/license.html
17 #include <openssl/bio.h>
18 #include <openssl/err.h>
19 #include <openssl/rand.h>
21 typedef enum OPTION_choice {
22 OPT_ERR = -1, OPT_EOF = 0, OPT_HELP,
23 OPT_OUT, OPT_ENGINE, OPT_BASE64, OPT_HEX,
24 OPT_R_ENUM, OPT_PROV_ENUM
27 const OPTIONS rand_options[] = {
28 {OPT_HELP_STR, 1, '-', "Usage: %s [options] num\n"},
30 OPT_SECTION("General"),
31 {"help", OPT_HELP, '-', "Display this summary"},
32 #ifndef OPENSSL_NO_ENGINE
33 {"engine", OPT_ENGINE, 's', "Use engine, possibly a hardware device"},
36 OPT_SECTION("Output"),
37 {"out", OPT_OUT, '>', "Output file"},
38 {"base64", OPT_BASE64, '-', "Base64 encode output"},
39 {"hex", OPT_HEX, '-', "Hex encode output"},
45 {"num", 0, 0, "Number of bytes to generate"},
49 int rand_main(int argc, char **argv)
53 char *outfile = NULL, *prog;
55 int format = FORMAT_BINARY, i, num = -1, r, ret = 1;
57 prog = opt_init(argc, argv, rand_options);
58 while ((o = opt_next()) != OPT_EOF) {
63 BIO_printf(bio_err, "%s: Use -help for summary.\n", prog);
66 opt_help(rand_options);
73 e = setup_engine(opt_arg(), 0);
80 format = FORMAT_BASE64;
91 argc = opt_num_rest();
94 if (!opt_int(argv[0], &num) || num <= 0)
96 } else if (argc > 0) {
97 BIO_printf(bio_err, "Extra arguments given.\n");
101 out = bio_open_default(outfile, 'w', format);
105 if (format == FORMAT_BASE64) {
106 BIO *b64 = BIO_new(BIO_f_base64());
109 out = BIO_push(b64, out);
113 unsigned char buf[4096];
117 if (chunk > (int)sizeof(buf))
119 r = RAND_bytes(buf, chunk);
122 if (format != FORMAT_TEXT) {
123 if (BIO_write(out, buf, chunk) != chunk)
126 for (i = 0; i < chunk; i++)
127 if (BIO_printf(out, "%02x", buf[i]) != 2)
132 if (format == FORMAT_TEXT)
134 if (BIO_flush(out) <= 0)
141 ERR_print_errors(bio_err);