Head

GCC Code Coverage Report

Directory:	./		Exec	Total	Coverage
File:	usr.bin/openssl/dh.c	Lines:	48	106	45.3 %
Date:	2017-11-13	Branches:	29	65	44.6 %


/* $OpenBSD: dh.c,v 1.9 2017/01/20 08:57:11 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>	/* for OPENSSL_NO_DH */

#ifndef OPENSSL_NO_DH

#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <time.h>

#include "apps.h"

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

static struct {
	int C;
	int check;
	char *infile;
	int informat;
	int noout;
	char *outfile;
	int outformat;
	int text;
} dh_config;

static struct option dh_options[] = {
	{
		.name = "C",
		.desc = "Convert DH parameters into C code",
		.type = OPTION_FLAG,
		.opt.flag = &dh_config.C,
	},
	{
		.name = "check",
		.desc = "Check the DH parameters",
		.type = OPTION_FLAG,
		.opt.flag = &dh_config.check,
	},
	{
		.name = "in",
		.argname = "file",
		.desc = "Input file (default stdin)",
		.type = OPTION_ARG,
		.opt.arg = &dh_config.infile,
	},
	{
		.name = "inform",
		.argname = "format",
		.desc = "Input format (DER or PEM (default))",
		.type = OPTION_ARG_FORMAT,
		.opt.value = &dh_config.informat,
	},
	{
		.name = "noout",
		.desc = "No output",
		.type = OPTION_FLAG,
		.opt.flag = &dh_config.noout,
	},
	{
		.name = "out",
		.argname = "file",
		.desc = "Output file (default stdout)",
		.type = OPTION_ARG,
		.opt.arg = &dh_config.outfile,
	},
	{
		.name = "outform",
		.argname = "format",
		.desc = "Output format (DER or PEM (default))",
		.type = OPTION_ARG_FORMAT,
		.opt.value = &dh_config.outformat,
	},
	{
		.name = "text",
		.desc = "Print a text form of the DH parameters",
		.type = OPTION_FLAG,
		.opt.flag = &dh_config.text,
	},
	{ NULL },
};

static void
dh_usage(void)
{
	fprintf(stderr,
	    "usage: dh [-C] [-check] [-in file] [-inform format]\n"
	    "    [-noout] [-out file] [-outform format] [-text]\n\n");
	options_usage(dh_options);
}

int
dh_main(int argc, char **argv)
{
	DH *dh = NULL;
	int i;
	BIO *in = NULL, *out = NULL;
	int ret = 1;

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

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

	dh_config.informat = FORMAT_PEM;
	dh_config.outformat = FORMAT_PEM;

	if (options_parse(argc, argv, dh_options, NULL, NULL) != 0) {
		dh_usage();
		goto end;
	}

	in = BIO_new(BIO_s_file());
	out = BIO_new(BIO_s_file());
	if (in == NULL || out == NULL) {
		ERR_print_errors(bio_err);
		goto end;
	}
	if (dh_config.infile == NULL)
		BIO_set_fp(in, stdin, BIO_NOCLOSE);
	else {
		if (BIO_read_filename(in, dh_config.infile) <= 0) {
			perror(dh_config.infile);
			goto end;
		}
	}
	if (dh_config.outfile == NULL) {
		BIO_set_fp(out, stdout, BIO_NOCLOSE);
	} else {
		if (BIO_write_filename(out, dh_config.outfile) <= 0) {
			perror(dh_config.outfile);
			goto end;
		}
	}

	if (dh_config.informat == FORMAT_ASN1)
		dh = d2i_DHparams_bio(in, NULL);
	else if (dh_config.informat == FORMAT_PEM)
		dh = PEM_read_bio_DHparams(in, NULL, NULL, NULL);
	else {
		BIO_printf(bio_err, "bad input format specified\n");
		goto end;
	}
	if (dh == NULL) {
		BIO_printf(bio_err, "unable to load DH parameters\n");
		ERR_print_errors(bio_err);
		goto end;
	}
	if (dh_config.text) {
		DHparams_print(out, dh);
	}
	if (dh_config.check) {
		if (!DH_check(dh, &i)) {
			ERR_print_errors(bio_err);
			goto end;
		}
		if (i & DH_CHECK_P_NOT_PRIME)
			printf("p value is not prime\n");
		if (i & DH_CHECK_P_NOT_SAFE_PRIME)
			printf("p value is not a safe prime\n");
		if (i & DH_UNABLE_TO_CHECK_GENERATOR)
			printf("unable to check the generator value\n");
		if (i & DH_NOT_SUITABLE_GENERATOR)
			printf("the g value is not a generator\n");
		if (i == 0)
			printf("DH parameters appear to be ok.\n");
	}
	if (dh_config.C) {
		unsigned char *data;
		int len, l, bits;

		len = BN_num_bytes(dh->p);
		bits = BN_num_bits(dh->p);
		data = malloc(len);
		if (data == NULL) {
			perror("malloc");
			goto end;
		}
		l = BN_bn2bin(dh->p, data);
		printf("static unsigned char dh%d_p[] = {", bits);
		for (i = 0; i < l; i++) {
			if ((i % 12) == 0)
				printf("\n\t");
			printf("0x%02X, ", data[i]);
		}
		printf("\n\t};\n");

		l = BN_bn2bin(dh->g, data);
		printf("static unsigned char dh%d_g[] = {", bits);
		for (i = 0; i < l; i++) {
			if ((i % 12) == 0)
				printf("\n\t");
			printf("0x%02X, ", data[i]);
		}
		printf("\n\t};\n\n");

		printf("DH *get_dh%d()\n\t{\n", bits);
		printf("\tDH *dh;\n\n");
		printf("\tif ((dh = DH_new()) == NULL) return(NULL);\n");
		printf("\tdh->p = BN_bin2bn(dh%d_p, sizeof(dh%d_p), NULL);\n",
		    bits, bits);
		printf("\tdh->g = BN_bin2bn(dh%d_g, sizeof(dh%d_g), NULL);\n",
		    bits, bits);
		printf("\tif ((dh->p == NULL) || (dh->g == NULL))\n");
		printf("\t\treturn(NULL);\n");
		printf("\treturn(dh);\n\t}\n");
		free(data);
	}
	if (!dh_config.noout) {
		if (dh_config.outformat == FORMAT_ASN1)
			i = i2d_DHparams_bio(out, dh);
		else if (dh_config.outformat == FORMAT_PEM)
			i = PEM_write_bio_DHparams(out, dh);
		else {
			BIO_printf(bio_err, "bad output format specified for outfile\n");
			goto end;
		}
		if (!i) {
			BIO_printf(bio_err, "unable to write DH parameters\n");
			ERR_print_errors(bio_err);
			goto end;
		}
	}
	ret = 0;

end:
	BIO_free(in);
	if (out != NULL)
		BIO_free_all(out);
	if (dh != NULL)
		DH_free(dh);

	return (ret);
}
#endif


Generated by: GCOVR (Version 3.3)

Line	Branch	Exec	Source
1			/* $OpenBSD: dh.c,v 1.9 2017/01/20 08:57:11 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> /* for OPENSSL_NO_DH */
60
61			#ifndef OPENSSL_NO_DH
62
63			#include <stdio.h>
64			#include <stdlib.h>
65			#include <string.h>
66			#include <time.h>
67
68			#include "apps.h"
69
70			#include <openssl/bio.h>
71			#include <openssl/bn.h>
72			#include <openssl/err.h>
73			#include <openssl/dh.h>
74			#include <openssl/pem.h>
75			#include <openssl/x509.h>
76
77			static struct {
78			int C;
79			int check;
80			char *infile;
81			int informat;
82			int noout;
83			char *outfile;
84			int outformat;
85			int text;
86			} dh_config;
87
88			static struct option dh_options[] = {
89			{
90			.name = "C",
91			.desc = "Convert DH parameters into C code",
92			.type = OPTION_FLAG,
93			.opt.flag = &dh_config.C,
94			},
95			{
96			.name = "check",
97			.desc = "Check the DH parameters",
98			.type = OPTION_FLAG,
99			.opt.flag = &dh_config.check,
100			},
101			{
102			.name = "in",
103			.argname = "file",
104			.desc = "Input file (default stdin)",
105			.type = OPTION_ARG,
106			.opt.arg = &dh_config.infile,
107			},
108			{
109			.name = "inform",
110			.argname = "format",
111			.desc = "Input format (DER or PEM (default))",
112			.type = OPTION_ARG_FORMAT,
113			.opt.value = &dh_config.informat,
114			},
115			{
116			.name = "noout",
117			.desc = "No output",
118			.type = OPTION_FLAG,
119			.opt.flag = &dh_config.noout,
120			},
121			{
122			.name = "out",
123			.argname = "file",
124			.desc = "Output file (default stdout)",
125			.type = OPTION_ARG,
126			.opt.arg = &dh_config.outfile,
127			},
128			{
129			.name = "outform",
130			.argname = "format",
131			.desc = "Output format (DER or PEM (default))",
132			.type = OPTION_ARG_FORMAT,
133			.opt.value = &dh_config.outformat,
134			},
135			{
136			.name = "text",
137			.desc = "Print a text form of the DH parameters",
138			.type = OPTION_FLAG,
139			.opt.flag = &dh_config.text,
140			},
141			{ NULL },
142			};
143
144			static void
145			dh_usage(void)
146			{
147		8	fprintf(stderr,
148			"usage: dh [-C] [-check] [-in file] [-inform format]\n"
149			" [-noout] [-out file] [-outform format] [-text]\n\n");
150		4	options_usage(dh_options);
151		4	}
152
153			int
154			dh_main(int argc, char **argv)
155			{
156			DH *dh = NULL;
157		16	int i;
158			BIO in = NULL, out = NULL;
159			int ret = 1;
160
161	✓✗	8	if (single_execution) {
162	✗✓	8	if (pledge("stdio cpath wpath rpath flock", NULL) == -1) {
163			perror("pledge");
164			exit(1);
165			}
166			}
167
168		8	memset(&dh_config, 0, sizeof(dh_config));
169
170		8	dh_config.informat = FORMAT_PEM;
171		8	dh_config.outformat = FORMAT_PEM;
172
173	✓✓	8	if (options_parse(argc, argv, dh_options, NULL, NULL) != 0) {
174		4	dh_usage();
175		4	goto end;
176			}
177
178		4	in = BIO_new(BIO_s_file());
179		4	out = BIO_new(BIO_s_file());
180	✗✓	4	if (in == NULL \|\| out == NULL) {
181			ERR_print_errors(bio_err);
182			goto end;
183			}
184	✗✓	4	if (dh_config.infile == NULL)
185			BIO_set_fp(in, stdin, BIO_NOCLOSE);
186			else {
187	✗✓	4	if (BIO_read_filename(in, dh_config.infile) <= 0) {
188			perror(dh_config.infile);
189			goto end;
190			}
191			}
192	✗✓	4	if (dh_config.outfile == NULL) {
193			BIO_set_fp(out, stdout, BIO_NOCLOSE);
194			} else {
195	✗✓	4	if (BIO_write_filename(out, dh_config.outfile) <= 0) {
196			perror(dh_config.outfile);
197			goto end;
198			}
199			}
200
201	✗✓	4	if (dh_config.informat == FORMAT_ASN1)
202			dh = d2i_DHparams_bio(in, NULL);
203	✓✗	4	else if (dh_config.informat == FORMAT_PEM)
204		4	dh = PEM_read_bio_DHparams(in, NULL, NULL, NULL);
205			else {
206			BIO_printf(bio_err, "bad input format specified\n");
207			goto end;
208			}
209	✗✓	4	if (dh == NULL) {
210			BIO_printf(bio_err, "unable to load DH parameters\n");
211			ERR_print_errors(bio_err);
212			goto end;
213			}
214	✓✗	4	if (dh_config.text) {
215		4	DHparams_print(out, dh);
216		4	}
217	✓✗	4	if (dh_config.check) {
218	✗✓	4	if (!DH_check(dh, &i)) {
219			ERR_print_errors(bio_err);
220			goto end;
221			}
222	✗✓	4	if (i & DH_CHECK_P_NOT_PRIME)
223			printf("p value is not prime\n");
224	✗✓	4	if (i & DH_CHECK_P_NOT_SAFE_PRIME)
225			printf("p value is not a safe prime\n");
226	✗✓	4	if (i & DH_UNABLE_TO_CHECK_GENERATOR)
227			printf("unable to check the generator value\n");
228	✗✓	4	if (i & DH_NOT_SUITABLE_GENERATOR)
229			printf("the g value is not a generator\n");
230	✓✗	4	if (i == 0)
231		4	printf("DH parameters appear to be ok.\n");
232			}
233	✗✓	4	if (dh_config.C) {
234			unsigned char *data;
235			int len, l, bits;
236
237			len = BN_num_bytes(dh->p);
238			bits = BN_num_bits(dh->p);
239			data = malloc(len);
240			if (data == NULL) {
241			perror("malloc");
242			goto end;
243			}
244			l = BN_bn2bin(dh->p, data);
245			printf("static unsigned char dh%d_p[] = {", bits);
246			for (i = 0; i < l; i++) {
247			if ((i % 12) == 0)
248			printf("\n\t");
249			printf("0x%02X, ", data[i]);
250			}
251			printf("\n\t};\n");
252
253			l = BN_bn2bin(dh->g, data);
254			printf("static unsigned char dh%d_g[] = {", bits);
255			for (i = 0; i < l; i++) {
256			if ((i % 12) == 0)
257			printf("\n\t");
258			printf("0x%02X, ", data[i]);
259			}
260			printf("\n\t};\n\n");
261
262			printf("DH *get_dh%d()\n\t{\n", bits);
263			printf("\tDH *dh;\n\n");
264			printf("\tif ((dh = DH_new()) == NULL) return(NULL);\n");
265			printf("\tdh->p = BN_bin2bn(dh%d_p, sizeof(dh%d_p), NULL);\n",
266			bits, bits);
267			printf("\tdh->g = BN_bin2bn(dh%d_g, sizeof(dh%d_g), NULL);\n",
268			bits, bits);
269			printf("\tif ((dh->p == NULL) \|\| (dh->g == NULL))\n");
270			printf("\t\treturn(NULL);\n");
271			printf("\treturn(dh);\n\t}\n");
272			free(data);
273			}
274	✓✗	4	if (!dh_config.noout) {
275	✗✓	4	if (dh_config.outformat == FORMAT_ASN1)
276			i = i2d_DHparams_bio(out, dh);
277	✓✗	4	else if (dh_config.outformat == FORMAT_PEM)
278		4	i = PEM_write_bio_DHparams(out, dh);
279			else {
280			BIO_printf(bio_err, "bad output format specified for outfile\n");
281			goto end;
282			}
283	✗✓	4	if (!i) {
284			BIO_printf(bio_err, "unable to write DH parameters\n");
285			ERR_print_errors(bio_err);
286			goto end;
287			}
288			}
289		4	ret = 0;
290
291			end:
292		8	BIO_free(in);
293	✓✓	8	if (out != NULL)
294		4	BIO_free_all(out);
295	✓✓	8	if (dh != NULL)
296		4	DH_free(dh);
297
298		8	return (ret);
299		8	}
300			#endif