GCC Code Coverage Report
Directory: ./ Exec Total Coverage
File: usr.bin/openssl/rand.c Lines: 0 57 0.0 %
Date: 2016-12-06 Branches: 0 40 0.0 %

Line Branch Exec Source
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/* $OpenBSD: rand.c,v 1.10 2015/10/17 15:00:11 doug Exp $ */
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/* ====================================================================
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 * Copyright (c) 1998-2001 The OpenSSL Project.  All rights reserved.
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 *
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 * Redistribution and use in source and binary forms, with or without
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 * modification, are permitted provided that the following conditions
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 * are met:
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 *
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 * 1. Redistributions of source code must retain the above copyright
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 *    notice, this list of conditions and the following disclaimer.
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 *
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 * 2. Redistributions in binary form must reproduce the above copyright
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 *    notice, this list of conditions and the following disclaimer in
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 *    the documentation and/or other materials provided with the
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 *    distribution.
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 *
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 * 3. All advertising materials mentioning features or use of this
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 *    software must display the following acknowledgment:
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 *    "This product includes software developed by the OpenSSL Project
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 *    for use in the OpenSSL Toolkit. (http://www.openssl.org/)"
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 *
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 * 4. The names "OpenSSL Toolkit" and "OpenSSL Project" must not be used to
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 *    endorse or promote products derived from this software without
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 *    prior written permission. For written permission, please contact
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 *    openssl-core@openssl.org.
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 *
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 * 5. Products derived from this software may not be called "OpenSSL"
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 *    nor may "OpenSSL" appear in their names without prior written
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 *    permission of the OpenSSL Project.
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 *
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 * 6. Redistributions of any form whatsoever must retain the following
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 *    acknowledgment:
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 *    "This product includes software developed by the OpenSSL Project
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 *    for use in the OpenSSL Toolkit (http://www.openssl.org/)"
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 *
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 * THIS SOFTWARE IS PROVIDED BY THE OpenSSL PROJECT ``AS IS'' AND ANY
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 * EXPRESSED OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
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 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
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 * PURPOSE ARE DISCLAIMED.  IN NO EVENT SHALL THE OpenSSL PROJECT OR
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 * ITS CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
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 * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
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 * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
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 * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
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 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT,
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 * STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
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 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED
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 * OF THE POSSIBILITY OF SUCH DAMAGE.
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 * ====================================================================
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 *
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 * This product includes cryptographic software written by Eric Young
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 * (eay@cryptsoft.com).  This product includes software written by Tim
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 * Hudson (tjh@cryptsoft.com).
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 *
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 */
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#include <ctype.h>
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#include <stdio.h>
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#include <string.h>
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#include "apps.h"
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#include <openssl/bio.h>
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#include <openssl/err.h>
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struct {
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	int base64;
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	int hex;
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	char *outfile;
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} rand_config;
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struct option rand_options[] = {
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	{
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		.name = "base64",
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		.desc = "Perform base64 encoding on output",
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		.type = OPTION_FLAG,
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		.opt.flag = &rand_config.base64,
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	},
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	{
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		.name = "hex",
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		.desc = "Hexadecimal output",
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		.type = OPTION_FLAG,
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		.opt.flag = &rand_config.hex,
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	},
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	{
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		.name = "out",
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		.argname = "file",
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		.desc = "Write to the given file instead of standard output",
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		.type = OPTION_ARG,
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		.opt.arg = &rand_config.outfile,
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	},
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	{NULL},
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};
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static void
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rand_usage()
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{
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	fprintf(stderr,
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	    "usage: rand [-base64 | -hex] [-out file] num\n");
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	options_usage(rand_options);
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}
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int
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rand_main(int argc, char **argv)
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{
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	char *num_bytes = NULL;
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	int ret = 1;
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	int badopt = 0;
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	int num = -1;
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	int i, r;
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	BIO *out = NULL;
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	if (single_execution) {
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		if (pledge("stdio rpath wpath cpath", NULL) == -1) {
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			perror("pledge");
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			exit(1);
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		}
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	}
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	memset(&rand_config, 0, sizeof(rand_config));
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	if (options_parse(argc, argv, rand_options, &num_bytes, NULL) != 0) {
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		rand_usage();
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		return (1);
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	}
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	if (num_bytes != NULL) {
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		r = sscanf(num_bytes, "%d", &num);
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		if (r == 0 || num < 0)
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			badopt = 1;
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	} else
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		badopt = 1;
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	if (rand_config.hex && rand_config.base64)
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		badopt = 1;
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	if (badopt) {
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		rand_usage();
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		goto err;
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	}
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	out = BIO_new(BIO_s_file());
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	if (out == NULL)
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		goto err;
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	if (rand_config.outfile != NULL)
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		r = BIO_write_filename(out, rand_config.outfile);
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	else
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		r = BIO_set_fp(out, stdout, BIO_NOCLOSE | BIO_FP_TEXT);
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	if (r <= 0)
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		goto err;
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	if (rand_config.base64) {
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		BIO *b64 = BIO_new(BIO_f_base64());
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		if (b64 == NULL)
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			goto err;
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		out = BIO_push(b64, out);
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	}
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	while (num > 0) {
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		unsigned char buf[4096];
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		int chunk;
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		chunk = num;
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		if (chunk > (int) sizeof(buf))
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			chunk = sizeof(buf);
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		arc4random_buf(buf, chunk);
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		if (rand_config.hex) {
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			for (i = 0; i < chunk; i++)
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				BIO_printf(out, "%02x", buf[i]);
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		} else
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			BIO_write(out, buf, chunk);
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		num -= chunk;
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	}
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	if (rand_config.hex)
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		BIO_puts(out, "\n");
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	(void) BIO_flush(out);
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	ret = 0;
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err:
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	ERR_print_errors(bio_err);
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	if (out)
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		BIO_free_all(out);
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	return (ret);
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}