sl@0: /* apps/rand.c */
sl@0: /* ====================================================================
sl@0:  * Copyright (c) 1998-2001 The OpenSSL Project.  All rights reserved.
sl@0:  *
sl@0:  * Redistribution and use in source and binary forms, with or without
sl@0:  * modification, are permitted provided that the following conditions
sl@0:  * are met:
sl@0:  *
sl@0:  * 1. Redistributions of source code must retain the above copyright
sl@0:  *    notice, this list of conditions and the following disclaimer. 
sl@0:  *
sl@0:  * 2. Redistributions in binary form must reproduce the above copyright
sl@0:  *    notice, this list of conditions and the following disclaimer in
sl@0:  *    the documentation and/or other materials provided with the
sl@0:  *    distribution.
sl@0:  *
sl@0:  * 3. All advertising materials mentioning features or use of this
sl@0:  *    software must display the following acknowledgment:
sl@0:  *    "This product includes software developed by the OpenSSL Project
sl@0:  *    for use in the OpenSSL Toolkit. (http://www.openssl.org/)"
sl@0:  *
sl@0:  * 4. The names "OpenSSL Toolkit" and "OpenSSL Project" must not be used to
sl@0:  *    endorse or promote products derived from this software without
sl@0:  *    prior written permission. For written permission, please contact
sl@0:  *    openssl-core@openssl.org.
sl@0:  *
sl@0:  * 5. Products derived from this software may not be called "OpenSSL"
sl@0:  *    nor may "OpenSSL" appear in their names without prior written
sl@0:  *    permission of the OpenSSL Project.
sl@0:  *
sl@0:  * 6. Redistributions of any form whatsoever must retain the following
sl@0:  *    acknowledgment:
sl@0:  *    "This product includes software developed by the OpenSSL Project
sl@0:  *    for use in the OpenSSL Toolkit (http://www.openssl.org/)"
sl@0:  *
sl@0:  * THIS SOFTWARE IS PROVIDED BY THE OpenSSL PROJECT ``AS IS'' AND ANY
sl@0:  * EXPRESSED OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
sl@0:  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
sl@0:  * PURPOSE ARE DISCLAIMED.  IN NO EVENT SHALL THE OpenSSL PROJECT OR
sl@0:  * ITS CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
sl@0:  * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
sl@0:  * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
sl@0:  * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
sl@0:  * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT,
sl@0:  * STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
sl@0:  * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED
sl@0:  * OF THE POSSIBILITY OF SUCH DAMAGE.
sl@0:  * ====================================================================
sl@0:  *
sl@0:  * This product includes cryptographic software written by Eric Young
sl@0:  * (eay@cryptsoft.com).  This product includes software written by Tim
sl@0:  * Hudson (tjh@cryptsoft.com).
sl@0:  *
sl@0:  */
sl@0: 
sl@0: #include "apps.h"
sl@0: 
sl@0: #include <ctype.h>
sl@0: #include <stdio.h>
sl@0: #include <string.h>
sl@0: 
sl@0: #include <openssl/bio.h>
sl@0: #include <openssl/err.h>
sl@0: #include <openssl/rand.h>
sl@0: 
sl@0: #undef PROG
sl@0: #define PROG rand_main
sl@0: 
sl@0: /* -out file         - write to file
sl@0:  * -rand file:file   - PRNG seed files
sl@0:  * -base64           - encode output
sl@0:  * num               - write 'num' bytes
sl@0:  */
sl@0: 
sl@0: 
sl@0: int MAIN(int, char **);
sl@0: 
sl@0: int MAIN(int argc, char **argv)
sl@0: 	{
sl@0: #ifndef OPENSSL_NO_ENGINE
sl@0: 	ENGINE *e = NULL;
sl@0: #endif
sl@0: 	int i, r, ret = 1;
sl@0: 	int badopt;
sl@0: 	char *outfile = NULL;
sl@0: 	char *inrand = NULL;
sl@0: 	int base64 = 0;
sl@0: 	BIO *out = NULL;
sl@0: 	int num = -1;
sl@0: #ifndef OPENSSL_NO_ENGINE
sl@0: 	char *engine=NULL;
sl@0: #endif
sl@0: 
sl@0: 	apps_startup();
sl@0: 
sl@0: 	if (bio_err == NULL)
sl@0: 		if ((bio_err = BIO_new(BIO_s_file())) != NULL)
sl@0: 			BIO_set_fp(bio_err, stderr, BIO_NOCLOSE|BIO_FP_TEXT);
sl@0: 
sl@0: 
sl@0: 	if (!load_config(bio_err, NULL))
sl@0: 		goto err;
sl@0: 
sl@0: 	badopt = 0;
sl@0: 	i = 0;
sl@0: 	while (!badopt && argv[++i] != NULL)
sl@0: 		{
sl@0: 		if (strcmp(argv[i], "-out") == 0)
sl@0: 			{
sl@0: 			if ((argv[i+1] != NULL) && (outfile == NULL))
sl@0: 				outfile = argv[++i];
sl@0: 			else
sl@0: 				badopt = 1;
sl@0: 			}
sl@0: #ifndef OPENSSL_NO_ENGINE
sl@0: 		else if (strcmp(argv[i], "-engine") == 0)
sl@0: 			{
sl@0: 			if ((argv[i+1] != NULL) && (engine == NULL))
sl@0: 				engine = argv[++i];
sl@0: 			else
sl@0: 				badopt = 1;
sl@0: 			}
sl@0: #endif
sl@0: 		else if (strcmp(argv[i], "-rand") == 0)
sl@0: 			{
sl@0: 			if ((argv[i+1] != NULL) && (inrand == NULL))
sl@0: 				inrand = argv[++i];
sl@0: 			else
sl@0: 				badopt = 1;
sl@0: 			}
sl@0: 		else if (strcmp(argv[i], "-base64") == 0)
sl@0: 			{
sl@0: 			if (!base64)
sl@0: 				base64 = 1;
sl@0: 			else
sl@0: 				badopt = 1;
sl@0: 			}
sl@0: 		else if (isdigit((unsigned char)argv[i][0]))
sl@0: 			{
sl@0: 			if (num < 0)
sl@0: 				{
sl@0: 				r = sscanf(argv[i], "%d", &num);
sl@0: 				if (r == 0 || num < 0)
sl@0: 					badopt = 1;
sl@0: 				}
sl@0: 			else
sl@0: 				badopt = 1;
sl@0: 			}
sl@0: 		else
sl@0: 			badopt = 1;
sl@0: 		}
sl@0: 
sl@0: 	if (num < 0)
sl@0: 		badopt = 1;
sl@0: 	
sl@0: 	if (badopt) 
sl@0: 		{
sl@0: 		BIO_printf(bio_err, "Usage: rand [options] num\n");
sl@0: 		BIO_printf(bio_err, "where options are\n");
sl@0: 		BIO_printf(bio_err, "-out file             - write to file\n");
sl@0: #ifndef OPENSSL_NO_ENGINE
sl@0: 		BIO_printf(bio_err, "-engine e             - use engine e, possibly a hardware device.\n");
sl@0: #endif
sl@0: 		BIO_printf(bio_err, "-rand file%cfile%c... - seed PRNG from files\n", LIST_SEPARATOR_CHAR, LIST_SEPARATOR_CHAR);
sl@0: 		BIO_printf(bio_err, "-base64               - encode output\n");
sl@0: 		goto err;
sl@0: 		}
sl@0: 
sl@0: #ifndef OPENSSL_NO_ENGINE
sl@0:         e = setup_engine(bio_err, engine, 0);
sl@0: #endif
sl@0: 
sl@0: 	app_RAND_load_file(NULL, bio_err, (inrand != NULL));
sl@0: 	if (inrand != NULL)
sl@0: 		BIO_printf(bio_err,"%ld semi-random bytes loaded\n",
sl@0: 			app_RAND_load_files(inrand));
sl@0: 
sl@0: 	out = BIO_new(BIO_s_file());
sl@0: 	if (out == NULL)
sl@0: 		goto err;
sl@0: 	if (outfile != NULL)
sl@0: 		r = BIO_write_filename(out, outfile);
sl@0: 	else
sl@0: 		{
sl@0: 		r = BIO_set_fp(out, stdout, BIO_NOCLOSE | BIO_FP_TEXT);
sl@0: 	
sl@0: #ifdef OPENSSL_SYS_VMS
sl@0: 		{
sl@0: 		BIO *tmpbio = BIO_new(BIO_f_linebuffer());
sl@0: 		out = BIO_push(tmpbio, out);
sl@0: 		}
sl@0: #endif
sl@0: 		}
sl@0: 	if (r <= 0)
sl@0: 		goto err;
sl@0: 
sl@0: 	if (base64)
sl@0: 		{
sl@0: 		BIO *b64 = BIO_new(BIO_f_base64());
sl@0: 		if (b64 == NULL)
sl@0: 			goto err;
sl@0: 		out = BIO_push(b64, out);
sl@0: 		}
sl@0: 	
sl@0: 	while (num > 0) 
sl@0: 		{
sl@0: 		unsigned char buf[4096];
sl@0: 		int chunk;
sl@0: 
sl@0: 		chunk = num;
sl@0: 		if (chunk > (int)sizeof(buf))
sl@0: 			chunk = sizeof buf;
sl@0: 		r = RAND_bytes(buf, chunk);
sl@0: 		if (r <= 0)
sl@0: 			goto err;
sl@0: 		BIO_write(out, buf, chunk);
sl@0: 		num -= chunk;
sl@0: 		}
sl@0: 	BIO_flush(out);
sl@0: 
sl@0: 	app_RAND_write_file(NULL, bio_err);
sl@0: 	ret = 0;
sl@0: 	
sl@0: err:
sl@0: 	ERR_print_errors(bio_err);
sl@0: 	if (out)
sl@0: 		BIO_free_all(out);
sl@0: 	apps_shutdown();
sl@0: 	OPENSSL_EXIT(ret);
sl@0: 	}