Head

GCC Code Coverage Report

Directory:	./		Exec	Total	Coverage
File:	usr.bin/openssl/rand.c	Lines:	46	54	85.2 %
Date:	2017-11-13	Branches:	26	37	70.3 %


/* $OpenBSD: rand.c,v 1.11 2017/01/20 08:57:12 deraadt Exp $ */
/* ====================================================================
 * 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 <ctype.h>
#include <stdio.h>
#include <string.h>

#include "apps.h"

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

struct {
	int base64;
	int hex;
	char *outfile;
} rand_config;

struct option rand_options[] = {
	{
		.name = "base64",
		.desc = "Perform base64 encoding on output",
		.type = OPTION_FLAG,
		.opt.flag = &rand_config.base64,
	},
	{
		.name = "hex",
		.desc = "Hexadecimal output",
		.type = OPTION_FLAG,
		.opt.flag = &rand_config.hex,
	},
	{
		.name = "out",
		.argname = "file",
		.desc = "Write to the given file instead of standard output",
		.type = OPTION_ARG,
		.opt.arg = &rand_config.outfile,
	},
	{NULL},
};

static void
rand_usage()
{
	fprintf(stderr,
	    "usage: rand [-base64 | -hex] [-out file] num\n");
	options_usage(rand_options);
}

int
rand_main(int argc, char **argv)
{
	char *num_bytes = NULL;
	int ret = 1;
	int badopt = 0;
	int num = -1;
	int i, r;
	BIO *out = NULL;

	if (single_execution) {
		if (pledge("stdio cpath wpath rpath flock", NULL) == -1) {
			perror("pledge");
			exit(1);
		}
	}

	memset(&rand_config, 0, sizeof(rand_config));

	if (options_parse(argc, argv, rand_options, &num_bytes, NULL) != 0) {
		rand_usage();
		return (1);
	}

	if (num_bytes != NULL) {
		r = sscanf(num_bytes, "%d", &num);
		if (r == 0 || num < 0)
			badopt = 1;
	} else
		badopt = 1;

	if (rand_config.hex && rand_config.base64)
		badopt = 1;

	if (badopt) {
		rand_usage();
		goto err;
	}

	out = BIO_new(BIO_s_file());
	if (out == NULL)
		goto err;
	if (rand_config.outfile != NULL)
		r = BIO_write_filename(out, rand_config.outfile);
	else
		r = BIO_set_fp(out, stdout, BIO_NOCLOSE | BIO_FP_TEXT);
	if (r <= 0)
		goto err;
	if (rand_config.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);
		arc4random_buf(buf, chunk);
		if (rand_config.hex) {
			for (i = 0; i < chunk; i++)
				BIO_printf(out, "%02x", buf[i]);
		} else
			BIO_write(out, buf, chunk);
		num -= chunk;
	}

	if (rand_config.hex)
		BIO_puts(out, "\n");
	(void) BIO_flush(out);

	ret = 0;

err:
	ERR_print_errors(bio_err);
	if (out)
		BIO_free_all(out);

	return (ret);
}


Generated by: GCOVR (Version 3.3)

Line	Branch	Exec	Source
1			/* $OpenBSD: rand.c,v 1.11 2017/01/20 08:57:12 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
65			struct {
66			int base64;
67			int hex;
68			char *outfile;
69			} rand_config;
70
71			struct option rand_options[] = {
72			{
73			.name = "base64",
74			.desc = "Perform base64 encoding on output",
75			.type = OPTION_FLAG,
76			.opt.flag = &rand_config.base64,
77			},
78			{
79			.name = "hex",
80			.desc = "Hexadecimal output",
81			.type = OPTION_FLAG,
82			.opt.flag = &rand_config.hex,
83			},
84			{
85			.name = "out",
86			.argname = "file",
87			.desc = "Write to the given file instead of standard output",
88			.type = OPTION_ARG,
89			.opt.arg = &rand_config.outfile,
90			},
91			{NULL},
92			};
93
94			static void
95			rand_usage()
96			{
97		8	fprintf(stderr,
98			"usage: rand [-base64 \| -hex] [-out file] num\n");
99		4	options_usage(rand_options);
100		4	}
101
102			int
103			rand_main(int argc, char **argv)
104			{
105		24	char *num_bytes = NULL;
106			int ret = 1;
107			int badopt = 0;
108		12	int num = -1;
109			int i, r;
110			BIO *out = NULL;
111
112	✓✗	12	if (single_execution) {
113	✗✓	12	if (pledge("stdio cpath wpath rpath flock", NULL) == -1) {
114			perror("pledge");
115			exit(1);
116			}
117			}
118
119		12	memset(&rand_config, 0, sizeof(rand_config));
120
121	✓✓	12	if (options_parse(argc, argv, rand_options, &num_bytes, NULL) != 0) {
122		4	rand_usage();
123		4	return (1);
124			}
125
126	✓✗	8	if (num_bytes != NULL) {
127		8	r = sscanf(num_bytes, "%d", &num);
128	✗✓	8	if (r == 0 \|\| num < 0)
129			badopt = 1;
130			} else
131			badopt = 1;
132
133	✗✓	8	if (rand_config.hex && rand_config.base64)
134			badopt = 1;
135
136	✗✓	8	if (badopt) {
137			rand_usage();
138			goto err;
139			}
140
141		8	out = BIO_new(BIO_s_file());
142	✓✗	8	if (out == NULL)
143			goto err;
144	✗✓	8	if (rand_config.outfile != NULL)
145			r = BIO_write_filename(out, rand_config.outfile);
146			else
147		8	r = BIO_set_fp(out, stdout, BIO_NOCLOSE \| BIO_FP_TEXT);
148	✓✗	8	if (r <= 0)
149			goto err;
150	✓✓	8	if (rand_config.base64) {
151		4	BIO *b64 = BIO_new(BIO_f_base64());
152	✗✓	4	if (b64 == NULL)
153			goto err;
154		4	out = BIO_push(b64, out);
155	✓✓✓	4	}
156
157	✓✓	32	while (num > 0) {
158		8	unsigned char buf[4096];
159			int chunk;
160
161		8	chunk = num;
162		8	if (chunk > (int) sizeof(buf))
163			chunk = sizeof(buf);
164		8	arc4random_buf(buf, chunk);
165	✓✓	8	if (rand_config.hex) {
166	✓✓	808	for (i = 0; i < chunk; i++)
167		400	BIO_printf(out, "%02x", buf[i]);
168			} else
169		4	BIO_write(out, buf, chunk);
170		8	num -= chunk;
171		8	}
172
173	✓✓	8	if (rand_config.hex)
174		4	BIO_puts(out, "\n");
175		8	(void) BIO_flush(out);
176
177		8	ret = 0;
178
179			err:
180		8	ERR_print_errors(bio_err);
181	✓✗	8	if (out)
182		8	BIO_free_all(out);
183
184		8	return (ret);
185		12	}