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-rw-r--r--src/usr.bin/openssl/rand.c194
1 files changed, 194 insertions, 0 deletions
diff --git a/src/usr.bin/openssl/rand.c b/src/usr.bin/openssl/rand.c
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1/* $OpenBSD: rand.c,v 1.1 2014/08/26 17:47:25 jsing Exp $ */
2/* ====================================================================
3 * Copyright (c) 1998-2001 The OpenSSL Project. All rights reserved.
4 *
5 * Redistribution and use in source and binary forms, with or without
6 * modification, are permitted provided that the following conditions
7 * are met:
8 *
9 * 1. Redistributions of source code must retain the above copyright
10 * notice, this list of conditions and the following disclaimer.
11 *
12 * 2. Redistributions in binary form must reproduce the above copyright
13 * notice, this list of conditions and the following disclaimer in
14 * the documentation and/or other materials provided with the
15 * distribution.
16 *
17 * 3. All advertising materials mentioning features or use of this
18 * software must display the following acknowledgment:
19 * "This product includes software developed by the OpenSSL Project
20 * for use in the OpenSSL Toolkit. (http://www.openssl.org/)"
21 *
22 * 4. The names "OpenSSL Toolkit" and "OpenSSL Project" must not be used to
23 * endorse or promote products derived from this software without
24 * prior written permission. For written permission, please contact
25 * openssl-core@openssl.org.
26 *
27 * 5. Products derived from this software may not be called "OpenSSL"
28 * nor may "OpenSSL" appear in their names without prior written
29 * permission of the OpenSSL Project.
30 *
31 * 6. Redistributions of any form whatsoever must retain the following
32 * acknowledgment:
33 * "This product includes software developed by the OpenSSL Project
34 * for use in the OpenSSL Toolkit (http://www.openssl.org/)"
35 *
36 * THIS SOFTWARE IS PROVIDED BY THE OpenSSL PROJECT ``AS IS'' AND ANY
37 * EXPRESSED OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
38 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
39 * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE OpenSSL PROJECT OR
40 * ITS CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
41 * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
42 * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
43 * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
44 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT,
45 * STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
46 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED
47 * OF THE POSSIBILITY OF SUCH DAMAGE.
48 * ====================================================================
49 *
50 * This product includes cryptographic software written by Eric Young
51 * (eay@cryptsoft.com). This product includes software written by Tim
52 * Hudson (tjh@cryptsoft.com).
53 *
54 */
55
56#include <ctype.h>
57#include <stdio.h>
58#include <string.h>
59
60#include "apps.h"
61
62#include <openssl/bio.h>
63#include <openssl/err.h>
64#include <openssl/rand.h>
65
66/* -out file - write to file
67 * -base64 - base64 encode output
68 * -hex - hex encode output
69 * num - write 'num' bytes
70 */
71
72int rand_main(int, char **);
73
74int
75rand_main(int argc, char **argv)
76{
77 int i, r, ret = 1;
78 int badopt;
79 char *outfile = NULL;
80 int base64 = 0;
81 int hex = 0;
82 BIO *out = NULL;
83 int num = -1;
84#ifndef OPENSSL_NO_ENGINE
85 char *engine = NULL;
86#endif
87
88 badopt = 0;
89 i = 0;
90 while (!badopt && argv[++i] != NULL) {
91 if (strcmp(argv[i], "-out") == 0) {
92 if ((argv[i + 1] != NULL) && (outfile == NULL))
93 outfile = argv[++i];
94 else
95 badopt = 1;
96 }
97#ifndef OPENSSL_NO_ENGINE
98 else if (strcmp(argv[i], "-engine") == 0) {
99 if ((argv[i + 1] != NULL) && (engine == NULL))
100 engine = argv[++i];
101 else
102 badopt = 1;
103 }
104#endif
105 else if (strcmp(argv[i], "-base64") == 0) {
106 if (!base64)
107 base64 = 1;
108 else
109 badopt = 1;
110 } else if (strcmp(argv[i], "-hex") == 0) {
111 if (!hex)
112 hex = 1;
113 else
114 badopt = 1;
115 } else if (isdigit((unsigned char) argv[i][0])) {
116 if (num < 0) {
117 r = sscanf(argv[i], "%d", &num);
118 if (r == 0 || num < 0)
119 badopt = 1;
120 } else
121 badopt = 1;
122 } else
123 badopt = 1;
124 }
125
126 if (hex && base64)
127 badopt = 1;
128
129 if (num < 0)
130 badopt = 1;
131
132 if (badopt) {
133 BIO_printf(bio_err, "Usage: rand [options] num\n");
134 BIO_printf(bio_err, "where options are\n");
135 BIO_printf(bio_err, "-out file - write to file\n");
136#ifndef OPENSSL_NO_ENGINE
137 BIO_printf(bio_err, "-engine e - use engine e, possibly a hardware device.\n");
138#endif
139 BIO_printf(bio_err, "-base64 - base64 encode output\n");
140 BIO_printf(bio_err, "-hex - hex encode output\n");
141 goto err;
142 }
143#ifndef OPENSSL_NO_ENGINE
144 setup_engine(bio_err, engine, 0);
145#endif
146
147 out = BIO_new(BIO_s_file());
148 if (out == NULL)
149 goto err;
150 if (outfile != NULL)
151 r = BIO_write_filename(out, outfile);
152 else {
153 r = BIO_set_fp(out, stdout, BIO_NOCLOSE | BIO_FP_TEXT);
154 }
155 if (r <= 0)
156 goto err;
157
158 if (base64) {
159 BIO *b64 = BIO_new(BIO_f_base64());
160 if (b64 == NULL)
161 goto err;
162 out = BIO_push(b64, out);
163 }
164 while (num > 0) {
165 unsigned char buf[4096];
166 int chunk;
167
168 chunk = num;
169 if (chunk > (int) sizeof(buf))
170 chunk = sizeof buf;
171 r = RAND_bytes(buf, chunk);
172 if (r <= 0)
173 goto err;
174 if (!hex)
175 BIO_write(out, buf, chunk);
176 else {
177 for (i = 0; i < chunk; i++)
178 BIO_printf(out, "%02x", buf[i]);
179 }
180 num -= chunk;
181 }
182 if (hex)
183 BIO_puts(out, "\n");
184 (void) BIO_flush(out);
185
186 ret = 0;
187
188err:
189 ERR_print_errors(bio_err);
190 if (out)
191 BIO_free_all(out);
192
193 return (ret);
194}