Annotation of src/usr.bin/openssl/rand.c, Revision 1.4
1.4 ! bcook 1: /* $OpenBSD: rand.c,v 1.3 2014/08/27 15:54:02 jsing Exp $ */
1.1 jsing 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:
1.2 jsing 66: struct {
67: int base64;
68: char *engine;
69: int hex;
70: char *outfile;
71: } rand_config;
72:
73: struct option rand_options[] = {
74: {
75: .name = "base64",
76: .desc = "Perform base64 encoding on output",
77: .type = OPTION_FLAG,
78: .opt.flag = &rand_config.base64,
79: },
80: #ifndef OPENSSL_NO_ENGINE
81: {
82: .name = "engine",
83: .argname = "id",
84: .desc = "Use the engine specified by the given identifier",
85: .type = OPTION_ARG,
86: .opt.arg = &rand_config.engine,
87: },
88: #endif
89: {
90: .name = "hex",
91: .desc = "Hexadecimal output",
92: .type = OPTION_FLAG,
93: .opt.flag = &rand_config.hex,
94: },
95: {
96: .name = "out",
97: .argname = "file",
98: .desc = "Write to the given file instead of standard output",
99: .type = OPTION_ARG,
100: .opt.arg = &rand_config.outfile,
101: },
1.4 ! bcook 102: {NULL},
1.2 jsing 103: };
104:
105: static void
106: rand_usage()
107: {
108: fprintf(stderr,
109: "usage: rand [-base64 | -hex] [-engine id] [-out file] num\n");
110: options_usage(rand_options);
111: }
1.1 jsing 112:
113: int rand_main(int, char **);
114:
115: int
116: rand_main(int argc, char **argv)
117: {
1.2 jsing 118: char *num_bytes = NULL;
119: int ret = 1;
120: int badopt = 0;
121: int num = -1;
122: int i, r;
1.1 jsing 123: BIO *out = NULL;
1.3 jsing 124:
125: memset(&rand_config, 0, sizeof(rand_config));
1.1 jsing 126:
1.2 jsing 127: if (options_parse(argc, argv, rand_options, &num_bytes) != 0) {
128: rand_usage();
129: return (1);
1.1 jsing 130: }
131:
1.2 jsing 132: if (num_bytes != NULL) {
133: r = sscanf(num_bytes, "%d", &num);
134: if (r == 0 || num < 0)
135: badopt = 1;
136: } else
1.1 jsing 137: badopt = 1;
138:
1.2 jsing 139: if (rand_config.hex && rand_config.base64)
1.1 jsing 140: badopt = 1;
141:
142: if (badopt) {
1.2 jsing 143: rand_usage();
1.1 jsing 144: goto err;
145: }
1.2 jsing 146:
1.1 jsing 147: #ifndef OPENSSL_NO_ENGINE
1.2 jsing 148: setup_engine(bio_err, rand_config.engine, 0);
1.1 jsing 149: #endif
150:
151: out = BIO_new(BIO_s_file());
152: if (out == NULL)
153: goto err;
1.2 jsing 154: if (rand_config.outfile != NULL)
155: r = BIO_write_filename(out, rand_config.outfile);
156: else
1.1 jsing 157: r = BIO_set_fp(out, stdout, BIO_NOCLOSE | BIO_FP_TEXT);
158: if (r <= 0)
159: goto err;
1.2 jsing 160: if (rand_config.base64) {
1.1 jsing 161: BIO *b64 = BIO_new(BIO_f_base64());
162: if (b64 == NULL)
163: goto err;
164: out = BIO_push(b64, out);
165: }
1.2 jsing 166:
1.1 jsing 167: while (num > 0) {
168: unsigned char buf[4096];
169: int chunk;
170:
171: chunk = num;
172: if (chunk > (int) sizeof(buf))
1.2 jsing 173: chunk = sizeof(buf);
1.1 jsing 174: r = RAND_bytes(buf, chunk);
175: if (r <= 0)
176: goto err;
1.2 jsing 177: if (rand_config.hex) {
1.1 jsing 178: for (i = 0; i < chunk; i++)
179: BIO_printf(out, "%02x", buf[i]);
1.2 jsing 180: } else
181: BIO_write(out, buf, chunk);
1.1 jsing 182: num -= chunk;
183: }
1.2 jsing 184:
185: if (rand_config.hex)
1.1 jsing 186: BIO_puts(out, "\n");
187: (void) BIO_flush(out);
188:
189: ret = 0;
190:
191: err:
192: ERR_print_errors(bio_err);
193: if (out)
194: BIO_free_all(out);
195:
196: return (ret);
197: }