Annotation of src/usr.bin/openssl/rand.c, Revision 1.2
1.2 ! jsing 1: /* $OpenBSD: rand.c,v 1.1 2014/08/26 17:47:25 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: },
! 102: {},
! 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;
124:
1.2 ! jsing 125: if (options_parse(argc, argv, rand_options, &num_bytes) != 0) {
! 126: rand_usage();
! 127: return (1);
1.1 jsing 128: }
129:
1.2 ! jsing 130: if (num_bytes != NULL) {
! 131: r = sscanf(num_bytes, "%d", &num);
! 132: if (r == 0 || num < 0)
! 133: badopt = 1;
! 134: } else
1.1 jsing 135: badopt = 1;
136:
1.2 ! jsing 137: if (rand_config.hex && rand_config.base64)
1.1 jsing 138: badopt = 1;
139:
140: if (badopt) {
1.2 ! jsing 141: rand_usage();
1.1 jsing 142: goto err;
143: }
1.2 ! jsing 144:
1.1 jsing 145: #ifndef OPENSSL_NO_ENGINE
1.2 ! jsing 146: setup_engine(bio_err, rand_config.engine, 0);
1.1 jsing 147: #endif
148:
149: out = BIO_new(BIO_s_file());
150: if (out == NULL)
151: goto err;
1.2 ! jsing 152: if (rand_config.outfile != NULL)
! 153: r = BIO_write_filename(out, rand_config.outfile);
! 154: else
1.1 jsing 155: r = BIO_set_fp(out, stdout, BIO_NOCLOSE | BIO_FP_TEXT);
156: if (r <= 0)
157: goto err;
1.2 ! jsing 158: if (rand_config.base64) {
1.1 jsing 159: BIO *b64 = BIO_new(BIO_f_base64());
160: if (b64 == NULL)
161: goto err;
162: out = BIO_push(b64, out);
163: }
1.2 ! jsing 164:
1.1 jsing 165: while (num > 0) {
166: unsigned char buf[4096];
167: int chunk;
168:
169: chunk = num;
170: if (chunk > (int) sizeof(buf))
1.2 ! jsing 171: chunk = sizeof(buf);
1.1 jsing 172: r = RAND_bytes(buf, chunk);
173: if (r <= 0)
174: goto err;
1.2 ! jsing 175: if (rand_config.hex) {
1.1 jsing 176: for (i = 0; i < chunk; i++)
177: BIO_printf(out, "%02x", buf[i]);
1.2 ! jsing 178: } else
! 179: BIO_write(out, buf, chunk);
1.1 jsing 180: num -= chunk;
181: }
1.2 ! jsing 182:
! 183: if (rand_config.hex)
1.1 jsing 184: BIO_puts(out, "\n");
185: (void) BIO_flush(out);
186:
187: ret = 0;
188:
189: err:
190: ERR_print_errors(bio_err);
191: if (out)
192: BIO_free_all(out);
193:
194: return (ret);
195: }