Head

GCC Code Coverage Report

Directory:	./		Exec	Total	Coverage
File:	lib/libcrypto/dh/dh_lib.c	Lines:	48	83	57.8 %
Date:	2017-11-13	Branches:	12	32	37.5 %


/* $OpenBSD: dh_lib.c,v 1.22 2017/01/29 17:49:22 beck 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 <stdio.h>

#include <openssl/opensslconf.h>

#include <openssl/bn.h>
#include <openssl/dh.h>
#include <openssl/err.h>

#ifndef OPENSSL_NO_ENGINE
#include <openssl/engine.h>
#endif

static const DH_METHOD *default_DH_method = NULL;

void
DH_set_default_method(const DH_METHOD *meth)
{
	default_DH_method = meth;
}

const DH_METHOD *
DH_get_default_method(void)
{
	if (!default_DH_method)
		default_DH_method = DH_OpenSSL();
	return default_DH_method;
}

int
DH_set_method(DH *dh, const DH_METHOD *meth)
{
	/*
	 * NB: The caller is specifically setting a method, so it's not up to us
	 * to deal with which ENGINE it comes from.
	 */
        const DH_METHOD *mtmp;

        mtmp = dh->meth;
        if (mtmp->finish)
		mtmp->finish(dh);
#ifndef OPENSSL_NO_ENGINE
	if (dh->engine) {
		ENGINE_finish(dh->engine);
		dh->engine = NULL;
	}
#endif
        dh->meth = meth;
        if (meth->init)
		meth->init(dh);
        return 1;
}

DH *
DH_new(void)
{
	return DH_new_method(NULL);
}

DH *
DH_new_method(ENGINE *engine)
{
	DH *ret;

	ret = malloc(sizeof(DH));
	if (ret == NULL) {
		DHerror(ERR_R_MALLOC_FAILURE);
		return NULL;
	}

	ret->meth = DH_get_default_method();
#ifndef OPENSSL_NO_ENGINE
	if (engine) {
		if (!ENGINE_init(engine)) {
			DHerror(ERR_R_ENGINE_LIB);
			free(ret);
			return NULL;
		}
		ret->engine = engine;
	} else
		ret->engine = ENGINE_get_default_DH();
	if(ret->engine) {
		ret->meth = ENGINE_get_DH(ret->engine);
		if (!ret->meth) {
			DHerror(ERR_R_ENGINE_LIB);
			ENGINE_finish(ret->engine);
			free(ret);
			return NULL;
		}
	}
#endif

	ret->pad = 0;
	ret->version = 0;
	ret->p = NULL;
	ret->g = NULL;
	ret->length = 0;
	ret->pub_key = NULL;
	ret->priv_key = NULL;
	ret->q = NULL;
	ret->j = NULL;
	ret->seed = NULL;
	ret->seedlen = 0;
	ret->counter = NULL;
	ret->method_mont_p=NULL;
	ret->references = 1;
	ret->flags = ret->meth->flags & ~DH_FLAG_NON_FIPS_ALLOW;
	CRYPTO_new_ex_data(CRYPTO_EX_INDEX_DH, ret, &ret->ex_data);
	if (ret->meth->init != NULL && !ret->meth->init(ret)) {
#ifndef OPENSSL_NO_ENGINE
		if (ret->engine)
			ENGINE_finish(ret->engine);
#endif
		CRYPTO_free_ex_data(CRYPTO_EX_INDEX_DH, ret, &ret->ex_data);
		free(ret);
		ret = NULL;
	}
	return ret;
}

void
DH_free(DH *r)
{
	int i;

	if (r == NULL)
		return;
	i = CRYPTO_add(&r->references, -1, CRYPTO_LOCK_DH);
	if (i > 0)
		return;

	if (r->meth->finish)
		r->meth->finish(r);
#ifndef OPENSSL_NO_ENGINE
	if (r->engine)
		ENGINE_finish(r->engine);
#endif

	CRYPTO_free_ex_data(CRYPTO_EX_INDEX_DH, r, &r->ex_data);

	BN_clear_free(r->p);
	BN_clear_free(r->g);
	BN_clear_free(r->q);
	BN_clear_free(r->j);
	free(r->seed);
	BN_clear_free(r->counter);
	BN_clear_free(r->pub_key);
	BN_clear_free(r->priv_key);
	free(r);
}

int
DH_up_ref(DH *r)
{
	int i = CRYPTO_add(&r->references, 1, CRYPTO_LOCK_DH);

	return i > 1 ? 1 : 0;
}

int
DH_get_ex_new_index(long argl, void *argp, CRYPTO_EX_new *new_func,
    CRYPTO_EX_dup *dup_func, CRYPTO_EX_free *free_func)
{
	return CRYPTO_get_ex_new_index(CRYPTO_EX_INDEX_DH, argl, argp, new_func,
	    dup_func, free_func);
}

int
DH_set_ex_data(DH *d, int idx, void *arg)
{
	return CRYPTO_set_ex_data(&d->ex_data, idx, arg);
}

void *
DH_get_ex_data(DH *d, int idx)
{
	return CRYPTO_get_ex_data(&d->ex_data, idx);
}

int
DH_size(const DH *dh)
{
	return BN_num_bytes(dh->p);
}


Generated by: GCOVR (Version 3.3)

Line	Branch	Exec	Source
1			/* $OpenBSD: dh_lib.c,v 1.22 2017/01/29 17:49:22 beck 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 <stdio.h>
60
61			#include <openssl/opensslconf.h>
62
63			#include <openssl/bn.h>
64			#include <openssl/dh.h>
65			#include <openssl/err.h>
66
67			#ifndef OPENSSL_NO_ENGINE
68			#include <openssl/engine.h>
69			#endif
70
71			static const DH_METHOD *default_DH_method = NULL;
72
73			void
74			DH_set_default_method(const DH_METHOD *meth)
75			{
76			default_DH_method = meth;
77			}
78
79			const DH_METHOD *
80			DH_get_default_method(void)
81			{
82	✓✓	4154	if (!default_DH_method)
83		1373	default_DH_method = DH_OpenSSL();
84		2077	return default_DH_method;
85			}
86
87			int
88			DH_set_method(DH dh, const DH_METHOD meth)
89			{
90			/*
91			* NB: The caller is specifically setting a method, so it's not up to us
92			* to deal with which ENGINE it comes from.
93			*/
94			const DH_METHOD *mtmp;
95
96			mtmp = dh->meth;
97			if (mtmp->finish)
98			mtmp->finish(dh);
99			#ifndef OPENSSL_NO_ENGINE
100			if (dh->engine) {
101			ENGINE_finish(dh->engine);
102			dh->engine = NULL;
103			}
104			#endif
105			dh->meth = meth;
106			if (meth->init)
107			meth->init(dh);
108			return 1;
109			}
110
111			DH *
112			DH_new(void)
113			{
114		4154	return DH_new_method(NULL);
115			}
116
117			DH *
118			DH_new_method(ENGINE *engine)
119			{
120			DH *ret;
121
122		4154	ret = malloc(sizeof(DH));
123	✗✓	2077	if (ret == NULL) {
124			DHerror(ERR_R_MALLOC_FAILURE);
125			return NULL;
126			}
127
128		2077	ret->meth = DH_get_default_method();
129			#ifndef OPENSSL_NO_ENGINE
130	✗✓	2077	if (engine) {
131			if (!ENGINE_init(engine)) {
132			DHerror(ERR_R_ENGINE_LIB);
133			free(ret);
134			return NULL;
135			}
136			ret->engine = engine;
137			} else
138		2077	ret->engine = ENGINE_get_default_DH();
139	✗✓	2077	if(ret->engine) {
140			ret->meth = ENGINE_get_DH(ret->engine);
141			if (!ret->meth) {
142			DHerror(ERR_R_ENGINE_LIB);
143			ENGINE_finish(ret->engine);
144			free(ret);
145			return NULL;
146			}
147			}
148			#endif
149
150		2077	ret->pad = 0;
151		2077	ret->version = 0;
152		2077	ret->p = NULL;
153		2077	ret->g = NULL;
154		2077	ret->length = 0;
155		2077	ret->pub_key = NULL;
156		2077	ret->priv_key = NULL;
157		2077	ret->q = NULL;
158		2077	ret->j = NULL;
159		2077	ret->seed = NULL;
160		2077	ret->seedlen = 0;
161		2077	ret->counter = NULL;
162		2077	ret->method_mont_p=NULL;
163		2077	ret->references = 1;
164		2077	ret->flags = ret->meth->flags & ~DH_FLAG_NON_FIPS_ALLOW;
165		2077	CRYPTO_new_ex_data(CRYPTO_EX_INDEX_DH, ret, &ret->ex_data);
166	✓✗✗✓	4154	if (ret->meth->init != NULL && !ret->meth->init(ret)) {
167			#ifndef OPENSSL_NO_ENGINE
168			if (ret->engine)
169			ENGINE_finish(ret->engine);
170			#endif
171			CRYPTO_free_ex_data(CRYPTO_EX_INDEX_DH, ret, &ret->ex_data);
172			free(ret);
173			ret = NULL;
174			}
175		2077	return ret;
176		2077	}
177
178			void
179			DH_free(DH *r)
180			{
181			int i;
182
183	✓✓	57184	if (r == NULL)
184		27709	return;
185		883	i = CRYPTO_add(&r->references, -1, CRYPTO_LOCK_DH);
186	✗✓	883	if (i > 0)
187			return;
188
189	✓✗	883	if (r->meth->finish)
190		883	r->meth->finish(r);
191			#ifndef OPENSSL_NO_ENGINE
192	✗✓	883	if (r->engine)
193			ENGINE_finish(r->engine);
194			#endif
195
196		883	CRYPTO_free_ex_data(CRYPTO_EX_INDEX_DH, r, &r->ex_data);
197
198		883	BN_clear_free(r->p);
199		883	BN_clear_free(r->g);
200		883	BN_clear_free(r->q);
201		883	BN_clear_free(r->j);
202		883	free(r->seed);
203		883	BN_clear_free(r->counter);
204		883	BN_clear_free(r->pub_key);
205		883	BN_clear_free(r->priv_key);
206		883	free(r);
207		29475	}
208
209			int
210			DH_up_ref(DH *r)
211			{
212			int i = CRYPTO_add(&r->references, 1, CRYPTO_LOCK_DH);
213
214			return i > 1 ? 1 : 0;
215			}
216
217			int
218			DH_get_ex_new_index(long argl, void argp, CRYPTO_EX_new new_func,
219			CRYPTO_EX_dup dup_func, CRYPTO_EX_free free_func)
220			{
221			return CRYPTO_get_ex_new_index(CRYPTO_EX_INDEX_DH, argl, argp, new_func,
222			dup_func, free_func);
223			}
224
225			int
226			DH_set_ex_data(DH d, int idx, void arg)
227			{
228			return CRYPTO_set_ex_data(&d->ex_data, idx, arg);
229			}
230
231			void *
232			DH_get_ex_data(DH *d, int idx)
233			{
234			return CRYPTO_get_ex_data(&d->ex_data, idx);
235			}
236
237			int
238			DH_size(const DH *dh)
239			{
240		360	return BN_num_bytes(dh->p);
241			}