Head

GCC Code Coverage Report

Directory:	./		Exec	Total	Coverage
File:	usr.bin/openssl/gendh.c	Lines:	43	56	76.8 %
Date:	2017-11-07	Branches:	17	31	54.8 %


/* $OpenBSD: gendh.c,v 1.8 2017/01/20 08:57:12 deraadt Exp $ */
/* Copyright (C) 1995-1998 Eric Young (eay@cryptsoft.com)
 * All rights reserved.
 *
 * This package is an SSL implementation written
 * by Eric Young (eay@cryptsoft.com).
 * The implementation was written so as to conform with Netscapes SSL.
 *
 * This library is free for commercial and non-commercial use as long as
 * the following conditions are aheared to.  The following conditions
 * apply to all code found in this distribution, be it the RC4, RSA,
 * lhash, DES, etc., code; not just the SSL code.  The SSL documentation
 * included with this distribution is covered by the same copyright terms
 * except that the holder is Tim Hudson (tjh@cryptsoft.com).
 *
 * Copyright remains Eric Young's, and as such any Copyright notices in
 * the code are not to be removed.
 * If this package is used in a product, Eric Young should be given attribution
 * as the author of the parts of the library used.
 * This can be in the form of a textual message at program startup or
 * in documentation (online or textual) provided with the package.
 *
 * 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 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 acknowledgement:
 *    "This product includes cryptographic software written by
 *     Eric Young (eay@cryptsoft.com)"
 *    The word 'cryptographic' can be left out if the rouines from the library
 *    being used are not cryptographic related :-).
 * 4. If you include any Windows specific code (or a derivative thereof) from
 *    the apps directory (application code) you must include an acknowledgement:
 *    "This product includes software written by Tim Hudson (tjh@cryptsoft.com)"
 *
 * THIS SOFTWARE IS PROVIDED BY ERIC YOUNG ``AS IS'' AND
 * ANY EXPRESS 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 AUTHOR OR 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.
 *
 * The licence and distribution terms for any publically available version or
 * derivative of this code cannot be changed.  i.e. this code cannot simply be
 * copied and put under another distribution licence
 * [including the GNU Public Licence.]
 */

#include <openssl/opensslconf.h>

/* Until the key-gen callbacks are modified to use newer prototypes, we allow
 * deprecated functions for openssl-internal code */
#ifdef OPENSSL_NO_DEPRECATED
#undef OPENSSL_NO_DEPRECATED
#endif

#ifndef OPENSSL_NO_DH

#include <sys/types.h>
#include <sys/stat.h>

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

#include "apps.h"

#include <openssl/bio.h>
#include <openssl/bn.h>
#include <openssl/dh.h>
#include <openssl/err.h>
#include <openssl/pem.h>
#include <openssl/x509.h>

#define DEFBITS	512

static int dh_cb(int p, int n, BN_GENCB * cb);

static struct {
	int g;
	char *outfile;
} gendh_config;

static struct option gendh_options[] = {
	{
		.name = "2",
		.desc = "Generate DH parameters with a generator value of 2 "
		    "(default)",
		.type = OPTION_VALUE,
		.value = 2,
		.opt.value = &gendh_config.g,
	},
	{
		.name = "5",
		.desc = "Generate DH parameters with a generator value of 5",
		.type = OPTION_VALUE,
		.value = 5,
		.opt.value = &gendh_config.g,
	},
	{
		.name = "out",
		.argname = "file",
		.desc = "Output file (default stdout)",
		.type = OPTION_ARG,
		.opt.arg = &gendh_config.outfile,
	},
	{ NULL },
};

static void
gendh_usage(void)
{
	fprintf(stderr,
	    "usage: gendh [-2 | -5] [-out file] [numbits]\n\n");
	options_usage(gendh_options);
}

int
gendh_main(int argc, char **argv)
{
	BN_GENCB cb;
	DH *dh = NULL;
	int ret = 1, numbits = DEFBITS;
	BIO *out = NULL;
	char *strbits = NULL;

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

	BN_GENCB_set(&cb, dh_cb, bio_err);

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

	gendh_config.g = 2;

	if (options_parse(argc, argv, gendh_options, &strbits, NULL) != 0) {
		gendh_usage();
		goto end;
	}

	if (strbits != NULL) {
		const char *errstr;
		numbits = strtonum(strbits, 0, INT_MAX, &errstr);
		if (errstr) {
			fprintf(stderr, "Invalid number of bits: %s\n", errstr);
			goto end;
		}
	}

	out = BIO_new(BIO_s_file());
	if (out == NULL) {
		ERR_print_errors(bio_err);
		goto end;
	}
	if (gendh_config.outfile == NULL) {
		BIO_set_fp(out, stdout, BIO_NOCLOSE);
	} else {
		if (BIO_write_filename(out, gendh_config.outfile) <= 0) {
			perror(gendh_config.outfile);
			goto end;
		}
	}

	BIO_printf(bio_err, "Generating DH parameters, %d bit long safe prime,"
	    " generator %d\n", numbits, gendh_config.g);
	BIO_printf(bio_err, "This is going to take a long time\n");

	if (((dh = DH_new()) == NULL) ||
	    !DH_generate_parameters_ex(dh, numbits, gendh_config.g, &cb))
		goto end;

	if (!PEM_write_bio_DHparams(out, dh))
		goto end;
	ret = 0;
end:
	if (ret != 0)
		ERR_print_errors(bio_err);
	if (out != NULL)
		BIO_free_all(out);
	if (dh != NULL)
		DH_free(dh);

	return (ret);
}

static int
dh_cb(int p, int n, BN_GENCB * cb)
{
	char c = '*';

	if (p == 0)
		c = '.';
	if (p == 1)
		c = '+';
	if (p == 2)
		c = '*';
	if (p == 3)
		c = '\n';
	BIO_write(cb->arg, &c, 1);
	(void) BIO_flush(cb->arg);
	return 1;
}
#endif


Generated by: GCOVR (Version 3.3)

Line	Branch	Exec	Source
1			/* $OpenBSD: gendh.c,v 1.8 2017/01/20 08:57:12 deraadt Exp $ */
2			/* Copyright (C) 1995-1998 Eric Young (eay@cryptsoft.com)
3			* All rights reserved.
4			*
5			* This package is an SSL implementation written
6			* by Eric Young (eay@cryptsoft.com).
7			* The implementation was written so as to conform with Netscapes SSL.
8			*
9			* This library is free for commercial and non-commercial use as long as
10			* the following conditions are aheared to. The following conditions
11			* apply to all code found in this distribution, be it the RC4, RSA,
12			* lhash, DES, etc., code; not just the SSL code. The SSL documentation
13			* included with this distribution is covered by the same copyright terms
14			* except that the holder is Tim Hudson (tjh@cryptsoft.com).
15			*
16			* Copyright remains Eric Young's, and as such any Copyright notices in
17			* the code are not to be removed.
18			* If this package is used in a product, Eric Young should be given attribution
19			* as the author of the parts of the library used.
20			* This can be in the form of a textual message at program startup or
21			* in documentation (online or textual) provided with the package.
22			*
23			* Redistribution and use in source and binary forms, with or without
24			* modification, are permitted provided that the following conditions
25			* are met:
26			* 1. Redistributions of source code must retain the copyright
27			* notice, this list of conditions and the following disclaimer.
28			* 2. Redistributions in binary form must reproduce the above copyright
29			* notice, this list of conditions and the following disclaimer in the
30			* documentation and/or other materials provided with the distribution.
31			* 3. All advertising materials mentioning features or use of this software
32			* must display the following acknowledgement:
33			* "This product includes cryptographic software written by
34			* Eric Young (eay@cryptsoft.com)"
35			* The word 'cryptographic' can be left out if the rouines from the library
36			* being used are not cryptographic related :-).
37			* 4. If you include any Windows specific code (or a derivative thereof) from
38			* the apps directory (application code) you must include an acknowledgement:
39			* "This product includes software written by Tim Hudson (tjh@cryptsoft.com)"
40			*
41			* THIS SOFTWARE IS PROVIDED BY ERIC YOUNG ``AS IS'' AND
42			* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
43			* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
44			* ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
45			* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
46			* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
47			* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
48			* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
49			* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
50			* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
51			* SUCH DAMAGE.
52			*
53			* The licence and distribution terms for any publically available version or
54			* derivative of this code cannot be changed. i.e. this code cannot simply be
55			* copied and put under another distribution licence
56			* [including the GNU Public Licence.]
57			*/
58
59			#include <openssl/opensslconf.h>
60
61			/* Until the key-gen callbacks are modified to use newer prototypes, we allow
62			* deprecated functions for openssl-internal code */
63			#ifdef OPENSSL_NO_DEPRECATED
64			#undef OPENSSL_NO_DEPRECATED
65			#endif
66
67			#ifndef OPENSSL_NO_DH
68
69			#include <sys/types.h>
70			#include <sys/stat.h>
71
72			#include <limits.h>
73			#include <stdio.h>
74			#include <string.h>
75
76			#include "apps.h"
77
78			#include <openssl/bio.h>
79			#include <openssl/bn.h>
80			#include <openssl/dh.h>
81			#include <openssl/err.h>
82			#include <openssl/pem.h>
83			#include <openssl/x509.h>
84
85			#define DEFBITS 512
86
87			static int dh_cb(int p, int n, BN_GENCB * cb);
88
89			static struct {
90			int g;
91			char *outfile;
92			} gendh_config;
93
94			static struct option gendh_options[] = {
95			{
96			.name = "2",
97			.desc = "Generate DH parameters with a generator value of 2 "
98			"(default)",
99			.type = OPTION_VALUE,
100			.value = 2,
101			.opt.value = &gendh_config.g,
102			},
103			{
104			.name = "5",
105			.desc = "Generate DH parameters with a generator value of 5",
106			.type = OPTION_VALUE,
107			.value = 5,
108			.opt.value = &gendh_config.g,
109			},
110			{
111			.name = "out",
112			.argname = "file",
113			.desc = "Output file (default stdout)",
114			.type = OPTION_ARG,
115			.opt.arg = &gendh_config.outfile,
116			},
117			{ NULL },
118			};
119
120			static void
121			gendh_usage(void)
122			{
123		16	fprintf(stderr,
124			"usage: gendh [-2 \| -5] [-out file] [numbits]\n\n");
125		8	options_usage(gendh_options);
126		8	}
127
128			int
129			gendh_main(int argc, char **argv)
130			{
131		32	BN_GENCB cb;
132			DH *dh = NULL;
133			int ret = 1, numbits = DEFBITS;
134			BIO *out = NULL;
135		16	char *strbits = NULL;
136
137	✓✗	16	if (single_execution) {
138	✗✓	16	if (pledge("stdio cpath wpath rpath flock", NULL) == -1) {
139			perror("pledge");
140			exit(1);
141			}
142			}
143
144		16	BN_GENCB_set(&cb, dh_cb, bio_err);
145
146		16	memset(&gendh_config, 0, sizeof(gendh_config));
147
148		16	gendh_config.g = 2;
149
150	✓✓	16	if (options_parse(argc, argv, gendh_options, &strbits, NULL) != 0) {
151		8	gendh_usage();
152		8	goto end;
153			}
154
155	✗✓	8	if (strbits != NULL) {
156			const char *errstr;
157			numbits = strtonum(strbits, 0, INT_MAX, &errstr);
158			if (errstr) {
159			fprintf(stderr, "Invalid number of bits: %s\n", errstr);
160			goto end;
161			}
162			}
163
164		8	out = BIO_new(BIO_s_file());
165	✗✓	8	if (out == NULL) {
166			ERR_print_errors(bio_err);
167			goto end;
168			}
169	✗✓	8	if (gendh_config.outfile == NULL) {
170			BIO_set_fp(out, stdout, BIO_NOCLOSE);
171			} else {
172	✗✓	8	if (BIO_write_filename(out, gendh_config.outfile) <= 0) {
173			perror(gendh_config.outfile);
174			goto end;
175			}
176			}
177
178		16	BIO_printf(bio_err, "Generating DH parameters, %d bit long safe prime,"
179		8	" generator %d\n", numbits, gendh_config.g);
180		8	BIO_printf(bio_err, "This is going to take a long time\n");
181
182	✓✗✓✗	16	if (((dh = DH_new()) == NULL) \|\|
183		8	!DH_generate_parameters_ex(dh, numbits, gendh_config.g, &cb))
184			goto end;
185
186	✓✗	8	if (!PEM_write_bio_DHparams(out, dh))
187			goto end;
188		8	ret = 0;
189			end:
190	✓✓	16	if (ret != 0)
191		8	ERR_print_errors(bio_err);
192	✓✓	16	if (out != NULL)
193		8	BIO_free_all(out);
194	✓✓	16	if (dh != NULL)
195		8	DH_free(dh);
196
197		16	return (ret);
198		16	}
199
200			static int
201			dh_cb(int p, int n, BN_GENCB * cb)
202			{
203		10780	char c = '*';
204
205		5390	if (p == 0)
206			c = '.';
207		5390	if (p == 1)
208			c = '+';
209		5390	if (p == 2)
210			c = '*';
211		5390	if (p == 3)
212		5390	c = '\n';
213		5390	BIO_write(cb->arg, &c, 1);
214		5390	(void) BIO_flush(cb->arg);
215		5390	return 1;
216		5390	}
217			#endif