Annotation of src/usr.bin/openssl/rand.c, Revision 1.1
1.1 ! jsing 1: /* $OpenBSD: rand.c,v 1.22 2014/07/14 00:35:10 deraadt 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:
! 72: int rand_main(int, char **);
! 73:
! 74: int
! 75: rand_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:
! 188: err:
! 189: ERR_print_errors(bio_err);
! 190: if (out)
! 191: BIO_free_all(out);
! 192:
! 193: return (ret);
! 194: }
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