[thirdparty/openssl.git] / apps / rand.c

/* apps/rand.c */
/* ====================================================================
 * Copyright (c) 1998-2001 The OpenSSL Project.  All rights reserved.
 *
 * Redistribution and use in source and binary forms, with or without
 * modification, are permitted provided that the following conditions
 * are met:
 *
 * 1. Redistributions of source code must retain the above copyright
 *    notice, this list of conditions and the following disclaimer. 
 *
 * 2. Redistributions in binary form must reproduce the above copyright
 *    notice, this list of conditions and the following disclaimer in
 *    the documentation and/or other materials provided with the
 *    distribution.
 *
 * 3. All advertising materials mentioning features or use of this
 *    software must display the following acknowledgment:
 *    "This product includes software developed by the OpenSSL Project
 *    for use in the OpenSSL Toolkit. (http://www.openssl.org/)"
 *
 * 4. The names "OpenSSL Toolkit" and "OpenSSL Project" must not be used to
 *    endorse or promote products derived from this software without
 *    prior written permission. For written permission, please contact
 *    openssl-core@openssl.org.
 *
 * 5. Products derived from this software may not be called "OpenSSL"
 *    nor may "OpenSSL" appear in their names without prior written
 *    permission of the OpenSSL Project.
 *
 * 6. Redistributions of any form whatsoever must retain the following
 *    acknowledgment:
 *    "This product includes software developed by the OpenSSL Project
 *    for use in the OpenSSL Toolkit (http://www.openssl.org/)"
 *
 * THIS SOFTWARE IS PROVIDED BY THE OpenSSL PROJECT ``AS IS'' AND ANY
 * EXPRESSED OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
 * PURPOSE ARE DISCLAIMED.  IN NO EVENT SHALL THE OpenSSL PROJECT OR
 * ITS CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
 * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
 * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
 * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT,
 * STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED
 * OF THE POSSIBILITY OF SUCH DAMAGE.
 * ====================================================================
 *
 * This product includes cryptographic software written by Eric Young
 * (eay@cryptsoft.com).  This product includes software written by Tim
 * Hudson (tjh@cryptsoft.com).
 *
 */

#include "apps.h"

#include <ctype.h>
#include <stdio.h>
#include <string.h>

#include <openssl/bio.h>
#include <openssl/err.h>
#include <openssl/rand.h>

#undef PROG
#define PROG rand_main

/*-
 * -out file         - write to file
 * -rand file:file   - PRNG seed files
 * -base64           - base64 encode output
 * -hex              - hex encode output
 * num               - write 'num' bytes
 */

int MAIN(int, char **);

int MAIN(int argc, char **argv)
	{
	int i, r, ret = 1;
	int badopt;
	char *outfile = NULL;
	char *inrand = NULL;
	int base64 = 0;
	int hex = 0;
	BIO *out = NULL;
	int num = -1;
#ifndef OPENSSL_NO_ENGINE
	char *engine=NULL;
#endif

	apps_startup();

	if (bio_err == NULL)
		if ((bio_err = BIO_new(BIO_s_file())) != NULL)
			BIO_set_fp(bio_err, stderr, BIO_NOCLOSE|BIO_FP_TEXT);

	if (!load_config(bio_err, NULL))
		goto err;

	badopt = 0;
	i = 0;
	while (!badopt && argv[++i] != NULL)
		{
		if (strcmp(argv[i], "-out") == 0)
			{
			if ((argv[i+1] != NULL) && (outfile == NULL))
				outfile = argv[++i];
			else
				badopt = 1;
			}
#ifndef OPENSSL_NO_ENGINE
		else if (strcmp(argv[i], "-engine") == 0)
			{
			if ((argv[i+1] != NULL) && (engine == NULL))
				engine = argv[++i];
			else
				badopt = 1;
			}
#endif
		else if (strcmp(argv[i], "-rand") == 0)
			{
			if ((argv[i+1] != NULL) && (inrand == NULL))
				inrand = argv[++i];
			else
				badopt = 1;
			}
		else if (strcmp(argv[i], "-base64") == 0)
			{
			if (!base64)
				base64 = 1;
			else
				badopt = 1;
			}
		else if (strcmp(argv[i], "-hex") == 0)
			{
			if (!hex)
				hex = 1;
			else
				badopt = 1;
			}
		else if (isdigit((unsigned char)argv[i][0]))
			{
			if (num < 0)
				{
				r = sscanf(argv[i], "%d", &num);
				if (r == 0 || num < 0)
					badopt = 1;
				}
			else
				badopt = 1;
			}
		else
			badopt = 1;
		}

	if (hex && base64)
		badopt = 1;

	if (num < 0)
		badopt = 1;
	
	if (badopt) 
		{
		BIO_printf(bio_err, "Usage: rand [options] num\n");
		BIO_printf(bio_err, "where options are\n");
		BIO_printf(bio_err, "-out file             - write to file\n");
#ifndef OPENSSL_NO_ENGINE
		BIO_printf(bio_err, "-engine e             - use engine e, possibly a hardware device.\n");
#endif
		BIO_printf(bio_err, "-rand file%cfile%c... - seed PRNG from files\n", LIST_SEPARATOR_CHAR, LIST_SEPARATOR_CHAR);
		BIO_printf(bio_err, "-base64               - base64 encode output\n");
		BIO_printf(bio_err, "-hex                  - hex encode output\n");
		goto err;
		}

#ifndef OPENSSL_NO_ENGINE
        setup_engine(bio_err, engine, 0);
#endif

	app_RAND_load_file(NULL, bio_err, (inrand != NULL));
	if (inrand != NULL)
		BIO_printf(bio_err,"%ld semi-random bytes loaded\n",
			app_RAND_load_files(inrand));

	out = BIO_new(BIO_s_file());
	if (out == NULL)
		goto err;
	if (outfile != NULL)
		r = BIO_write_filename(out, outfile);
	else
		{
		r = BIO_set_fp(out, stdout, BIO_NOCLOSE | BIO_FP_TEXT);
#ifdef OPENSSL_SYS_VMS
		{
		BIO *tmpbio = BIO_new(BIO_f_linebuffer());
		out = BIO_push(tmpbio, out);
		}
#endif
		}
	if (r <= 0)
		goto err;

	if (base64)
		{
		BIO *b64 = BIO_new(BIO_f_base64());
		if (b64 == NULL)
			goto err;
		out = BIO_push(b64, out);
		}
	
	while (num > 0) 
		{
		unsigned char buf[4096];
		int chunk;

		chunk = num;
		if (chunk > (int)sizeof(buf))
			chunk = sizeof buf;
		r = RAND_bytes(buf, chunk);
		if (r <= 0)
			goto err;
		if (!hex) 
			BIO_write(out, buf, chunk);
		else
			{
			for (i = 0; i < chunk; i++)
				BIO_printf(out, "%02x", buf[i]);
			}
		num -= chunk;
		}
	if (hex)
		BIO_puts(out, "\n");
	(void)BIO_flush(out);

	app_RAND_write_file(NULL, bio_err);
	ret = 0;
	
err:
	ERR_print_errors(bio_err);
	if (out)
		BIO_free_all(out);
	apps_shutdown();
	OPENSSL_EXIT(ret);
	}
Commit	Line	Data
27b78273	1	/* apps/rand.c */
a661b653 BM	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	*/
27b78273 BM	55
	56	#include "apps.h"
	57
	58	#include <ctype.h>
	59	#include <stdio.h>
8824ec7c	60	#include <string.h>
27b78273 BM	61
	62	#include <openssl/bio.h>
	63	#include <openssl/err.h>
	64	#include <openssl/rand.h>
	65
	66	#undef PROG
	67	#define PROG rand_main
	68
3e9a08ec TH	69	/*-
3e9a08ec TH	70	* -out file - write to file
27b78273	71	* -rand file:file - PRNG seed files
7ca1cfba BM	72	* -base64 - base64 encode output
7ca1cfba BM	73	* -hex - hex encode output
27b78273 BM	74	* num - write 'num' bytes
	75	*/
	76
	77	int MAIN(int, char **);
	78
	79	int MAIN(int argc, char **argv)
	80	{
	81	int i, r, ret = 1;
	82	int badopt;
	83	char *outfile = NULL;
f365611c	84	char *inrand = NULL;
27b78273	85	int base64 = 0;
7ca1cfba	86	int hex = 0;
27b78273 BM	87	BIO *out = NULL;
27b78273 BM	88	int num = -1;
0b13e9f0	89	#ifndef OPENSSL_NO_ENGINE
5270e702	90	char *engine=NULL;
0b13e9f0	91	#endif
27b78273 BM	92
	93	apps_startup();
	94
	95	if (bio_err == NULL)
	96	if ((bio_err = BIO_new(BIO_s_file())) != NULL)
	97	BIO_set_fp(bio_err, stderr, BIO_NOCLOSE\|BIO_FP_TEXT);
	98
3647bee2 DSH	99	if (!load_config(bio_err, NULL))
	100	goto err;
	101
27b78273 BM	102	badopt = 0;
	103	i = 0;
	104	while (!badopt && argv[++i] != NULL)
	105	{
	106	if (strcmp(argv[i], "-out") == 0)
	107	{
	108	if ((argv[i+1] != NULL) && (outfile == NULL))
	109	outfile = argv[++i];
	110	else
	111	badopt = 1;
	112	}
0b13e9f0	113	#ifndef OPENSSL_NO_ENGINE
73fc98a7	114	else if (strcmp(argv[i], "-engine") == 0)
5270e702 RL	115	{
	116	if ((argv[i+1] != NULL) && (engine == NULL))
	117	engine = argv[++i];
	118	else
	119	badopt = 1;
	120	}
0b13e9f0	121	#endif
27b78273 BM	122	else if (strcmp(argv[i], "-rand") == 0)
	123	{
	124	if ((argv[i+1] != NULL) && (inrand == NULL))
	125	inrand = argv[++i];
	126	else
	127	badopt = 1;
	128	}
	129	else if (strcmp(argv[i], "-base64") == 0)
	130	{
	131	if (!base64)
	132	base64 = 1;
	133	else
	134	badopt = 1;
	135	}
7ca1cfba BM	136	else if (strcmp(argv[i], "-hex") == 0)
	137	{
	138	if (!hex)
	139	hex = 1;
	140	else
	141	badopt = 1;
	142	}
d9586857	143	else if (isdigit((unsigned char)argv[i][0]))
27b78273 BM	144	{
	145	if (num < 0)
	146	{
	147	r = sscanf(argv[i], "%d", &num);
	148	if (r == 0 \|\| num < 0)
	149	badopt = 1;
	150	}
	151	else
	152	badopt = 1;
	153	}
	154	else
	155	badopt = 1;
	156	}
	157
7ca1cfba BM	158	if (hex && base64)
	159	badopt = 1;
	160
27b78273 BM	161	if (num < 0)
	162	badopt = 1;
	163
	164	if (badopt)
	165	{
	166	BIO_printf(bio_err, "Usage: rand [options] num\n");
	167	BIO_printf(bio_err, "where options are\n");
5270e702	168	BIO_printf(bio_err, "-out file - write to file\n");
0b13e9f0	169	#ifndef OPENSSL_NO_ENGINE
1613c4d3	170	BIO_printf(bio_err, "-engine e - use engine e, possibly a hardware device.\n");
0b13e9f0	171	#endif
5270e702	172	BIO_printf(bio_err, "-rand file%cfile%c... - seed PRNG from files\n", LIST_SEPARATOR_CHAR, LIST_SEPARATOR_CHAR);
7ca1cfba BM	173	BIO_printf(bio_err, "-base64 - base64 encode output\n");
7ca1cfba BM	174	BIO_printf(bio_err, "-hex - hex encode output\n");
27b78273 BM	175	goto err;
	176	}
	177
0b13e9f0	178	#ifndef OPENSSL_NO_ENGINE
e9735943	179	setup_engine(bio_err, engine, 0);
0b13e9f0	180	#endif
5270e702	181
f365611c	182	app_RAND_load_file(NULL, bio_err, (inrand != NULL));
27b78273 BM	183	if (inrand != NULL)
	184	BIO_printf(bio_err,"%ld semi-random bytes loaded\n",
	185	app_RAND_load_files(inrand));
	186
	187	out = BIO_new(BIO_s_file());
	188	if (out == NULL)
	189	goto err;
	190	if (outfile != NULL)
	191	r = BIO_write_filename(out, outfile);
	192	else
645749ef	193	{
27b78273	194	r = BIO_set_fp(out, stdout, BIO_NOCLOSE \| BIO_FP_TEXT);
bc36ee62	195	#ifdef OPENSSL_SYS_VMS
645749ef RL	196	{
	197	BIO *tmpbio = BIO_new(BIO_f_linebuffer());
	198	out = BIO_push(tmpbio, out);
	199	}
	200	#endif
	201	}
27b78273 BM	202	if (r <= 0)
	203	goto err;
	204
	205	if (base64)
	206	{
	207	BIO *b64 = BIO_new(BIO_f_base64());
	208	if (b64 == NULL)
	209	goto err;
	210	out = BIO_push(b64, out);
	211	}
	212
	213	while (num > 0)
	214	{
	215	unsigned char buf[4096];
	216	int chunk;
	217
	218	chunk = num;
27545970	219	if (chunk > (int)sizeof(buf))
27b78273 BM	220	chunk = sizeof buf;
	221	r = RAND_bytes(buf, chunk);
	222	if (r <= 0)
	223	goto err;
7ca1cfba BM	224	if (!hex)
	225	BIO_write(out, buf, chunk);
	226	else
	227	{
	228	for (i = 0; i < chunk; i++)
	229	BIO_printf(out, "%02x", buf[i]);
7ca1cfba	230	}
27b78273 BM	231	num -= chunk;
27b78273 BM	232	}
d615bceb BM	233	if (hex)
d615bceb BM	234	BIO_puts(out, "\n");
710069c1	235	(void)BIO_flush(out);
27b78273 BM	236
	237	app_RAND_write_file(NULL, bio_err);
	238	ret = 0;
	239
	240	err:
	241	ERR_print_errors(bio_err);
	242	if (out)
	243	BIO_free_all(out);
c04f8cf4	244	apps_shutdown();
1c3e4a36	245	OPENSSL_EXIT(ret);
27b78273	246	}