Head

GCC Code Coverage Report

Directory:	./		Exec	Total	Coverage
File:	lib/libcrypto/engine/tb_asnmth.c	Lines:	16	74	21.6 %
Date:	2017-11-07	Branches:	2	46	4.3 %


/* $OpenBSD: tb_asnmth.c,v 1.6 2017/01/29 17:49:23 beck Exp $ */
/* ====================================================================
 * Copyright (c) 2006 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
 *    licensing@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 <string.h>

#include <openssl/err.h>

#include "eng_int.h"
#include "asn1_locl.h"
#include <openssl/evp.h>

/* If this symbol is defined then ENGINE_get_pkey_asn1_meth_engine(), the
 * function that is used by EVP to hook in pkey_asn1_meth code and cache
 * defaults (etc), will display brief debugging summaries to stderr with the
 * 'nid'. */
/* #define ENGINE_PKEY_ASN1_METH_DEBUG */

static ENGINE_TABLE *pkey_asn1_meth_table = NULL;

void
ENGINE_unregister_pkey_asn1_meths(ENGINE *e)
{
	engine_table_unregister(&pkey_asn1_meth_table, e);
}

static void
engine_unregister_all_pkey_asn1_meths(void)
{
	engine_table_cleanup(&pkey_asn1_meth_table);
}

int
ENGINE_register_pkey_asn1_meths(ENGINE *e)
{
	if (e->pkey_asn1_meths) {
		const int *nids;
		int num_nids = e->pkey_asn1_meths(e, NULL, &nids, 0);
		if (num_nids > 0)
			return engine_table_register(&pkey_asn1_meth_table,
			    engine_unregister_all_pkey_asn1_meths, e, nids,
			    num_nids, 0);
	}
	return 1;
}

void
ENGINE_register_all_pkey_asn1_meths(void)
{
	ENGINE *e;

	for (e = ENGINE_get_first(); e; e = ENGINE_get_next(e))
		ENGINE_register_pkey_asn1_meths(e);
}

int
ENGINE_set_default_pkey_asn1_meths(ENGINE *e)
{
	if (e->pkey_asn1_meths) {
		const int *nids;
		int num_nids = e->pkey_asn1_meths(e, NULL, &nids, 0);
		if (num_nids > 0)
			return engine_table_register(&pkey_asn1_meth_table,
			    engine_unregister_all_pkey_asn1_meths, e, nids,
			    num_nids, 1);
	}
	return 1;
}

/* Exposed API function to get a functional reference from the implementation
 * table (ie. try to get a functional reference from the tabled structural
 * references) for a given pkey_asn1_meth 'nid' */
ENGINE *
ENGINE_get_pkey_asn1_meth_engine(int nid)
{
	return engine_table_select(&pkey_asn1_meth_table, nid);
}

/* Obtains a pkey_asn1_meth implementation from an ENGINE functional reference */
const EVP_PKEY_ASN1_METHOD *
ENGINE_get_pkey_asn1_meth(ENGINE *e, int nid)
{
	EVP_PKEY_ASN1_METHOD *ret;
	ENGINE_PKEY_ASN1_METHS_PTR fn = ENGINE_get_pkey_asn1_meths(e);

	if (!fn || !fn(e, &ret, NULL, nid)) {
		ENGINEerror(ENGINE_R_UNIMPLEMENTED_PUBLIC_KEY_METHOD);
		return NULL;
	}
	return ret;
}

/* Gets the pkey_asn1_meth callback from an ENGINE structure */
ENGINE_PKEY_ASN1_METHS_PTR
ENGINE_get_pkey_asn1_meths(const ENGINE *e)
{
	return e->pkey_asn1_meths;
}

/* Sets the pkey_asn1_meth callback in an ENGINE structure */
int
ENGINE_set_pkey_asn1_meths(ENGINE *e, ENGINE_PKEY_ASN1_METHS_PTR f)
{
	e->pkey_asn1_meths = f;
	return 1;
}

/* Internal function to free up EVP_PKEY_ASN1_METHOD structures before an
 * ENGINE is destroyed
 */

void
engine_pkey_asn1_meths_free(ENGINE *e)
{
	int i;
	EVP_PKEY_ASN1_METHOD *pkm;

	if (e->pkey_asn1_meths) {
		const int *pknids;
		int npknids;
		npknids = e->pkey_asn1_meths(e, NULL, &pknids, 0);
		for (i = 0; i < npknids; i++) {
			if (e->pkey_asn1_meths(e, &pkm, NULL, pknids[i])) {
				EVP_PKEY_asn1_free(pkm);
			}
		}
	}
}

/* Find a method based on a string. This does a linear search through
 * all implemented algorithms. This is OK in practice because only
 * a small number of algorithms are likely to be implemented in an engine
 * and it is not used for speed critical operations.
 */

const EVP_PKEY_ASN1_METHOD *
ENGINE_get_pkey_asn1_meth_str(ENGINE *e, const char *str, int len)
{
	int i, nidcount;
	const int *nids;
	EVP_PKEY_ASN1_METHOD *ameth;

	if (!e->pkey_asn1_meths)
		return NULL;
	if (len == -1)
		len = strlen(str);
	nidcount = e->pkey_asn1_meths(e, NULL, &nids, 0);
	for (i = 0; i < nidcount; i++) {
		e->pkey_asn1_meths(e, &ameth, NULL, nids[i]);
		if (((int)strlen(ameth->pem_str) == len) &&
		    !strncasecmp(ameth->pem_str, str, len))
			return ameth;
	}
	return NULL;
}

typedef struct {
	ENGINE *e;
	const EVP_PKEY_ASN1_METHOD *ameth;
	const char *str;
	int len;
} ENGINE_FIND_STR;

static void
look_str_cb(int nid, STACK_OF(ENGINE) *sk, ENGINE *def, void *arg)
{
	ENGINE_FIND_STR *lk = arg;
	int i;

	if (lk->ameth)
		return;
	for (i = 0; i < sk_ENGINE_num(sk); i++) {
		ENGINE *e = sk_ENGINE_value(sk, i);
		EVP_PKEY_ASN1_METHOD *ameth;
		e->pkey_asn1_meths(e, &ameth, NULL, nid);
		if (((int)strlen(ameth->pem_str) == lk->len) &&
		    !strncasecmp(ameth->pem_str, lk->str, lk->len)) {
			lk->e = e;
			lk->ameth = ameth;
			return;
		}
	}
}

const EVP_PKEY_ASN1_METHOD *
ENGINE_pkey_asn1_find_str(ENGINE **pe, const char *str, int len)
{
	ENGINE_FIND_STR fstr;

	fstr.e = NULL;
	fstr.ameth = NULL;
	fstr.str = str;
	fstr.len = len;
	CRYPTO_w_lock(CRYPTO_LOCK_ENGINE);
	engine_table_doall(pkey_asn1_meth_table, look_str_cb, &fstr);
	/* If found obtain a structural reference to engine */
	if (fstr.e) {
		fstr.e->struct_ref++;
		engine_ref_debug(fstr.e, 0, 1)
	}
	*pe = fstr.e;
	CRYPTO_w_unlock(CRYPTO_LOCK_ENGINE);
	return fstr.ameth;
}


Generated by: GCOVR (Version 3.3)

Line	Branch	Exec	Source
1			/* $OpenBSD: tb_asnmth.c,v 1.6 2017/01/29 17:49:23 beck Exp $ */
2			/* ====================================================================
3			* Copyright (c) 2006 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			* licensing@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 <string.h>
57
58			#include <openssl/err.h>
59
60			#include "eng_int.h"
61			#include "asn1_locl.h"
62			#include <openssl/evp.h>
63
64			/* If this symbol is defined then ENGINE_get_pkey_asn1_meth_engine(), the
65			* function that is used by EVP to hook in pkey_asn1_meth code and cache
66			* defaults (etc), will display brief debugging summaries to stderr with the
67			* 'nid'. */
68			/* #define ENGINE_PKEY_ASN1_METH_DEBUG */
69
70			static ENGINE_TABLE *pkey_asn1_meth_table = NULL;
71
72			void
73			ENGINE_unregister_pkey_asn1_meths(ENGINE *e)
74			{
75			engine_table_unregister(&pkey_asn1_meth_table, e);
76			}
77
78			static void
79			engine_unregister_all_pkey_asn1_meths(void)
80			{
81			engine_table_cleanup(&pkey_asn1_meth_table);
82			}
83
84			int
85			ENGINE_register_pkey_asn1_meths(ENGINE *e)
86			{
87			if (e->pkey_asn1_meths) {
88			const int *nids;
89			int num_nids = e->pkey_asn1_meths(e, NULL, &nids, 0);
90			if (num_nids > 0)
91			return engine_table_register(&pkey_asn1_meth_table,
92			engine_unregister_all_pkey_asn1_meths, e, nids,
93			num_nids, 0);
94			}
95			return 1;
96			}
97
98			void
99			ENGINE_register_all_pkey_asn1_meths(void)
100			{
101			ENGINE *e;
102
103			for (e = ENGINE_get_first(); e; e = ENGINE_get_next(e))
104			ENGINE_register_pkey_asn1_meths(e);
105			}
106
107			int
108			ENGINE_set_default_pkey_asn1_meths(ENGINE *e)
109			{
110			if (e->pkey_asn1_meths) {
111			const int *nids;
112			int num_nids = e->pkey_asn1_meths(e, NULL, &nids, 0);
113			if (num_nids > 0)
114			return engine_table_register(&pkey_asn1_meth_table,
115			engine_unregister_all_pkey_asn1_meths, e, nids,
116			num_nids, 1);
117			}
118			return 1;
119			}
120
121			/* Exposed API function to get a functional reference from the implementation
122			* table (ie. try to get a functional reference from the tabled structural
123			* references) for a given pkey_asn1_meth 'nid' */
124			ENGINE *
125			ENGINE_get_pkey_asn1_meth_engine(int nid)
126			{
127		82796	return engine_table_select(&pkey_asn1_meth_table, nid);
128			}
129
130			/* Obtains a pkey_asn1_meth implementation from an ENGINE functional reference */
131			const EVP_PKEY_ASN1_METHOD *
132			ENGINE_get_pkey_asn1_meth(ENGINE *e, int nid)
133			{
134			EVP_PKEY_ASN1_METHOD *ret;
135			ENGINE_PKEY_ASN1_METHS_PTR fn = ENGINE_get_pkey_asn1_meths(e);
136
137			if (!fn \|\| !fn(e, &ret, NULL, nid)) {
138			ENGINEerror(ENGINE_R_UNIMPLEMENTED_PUBLIC_KEY_METHOD);
139			return NULL;
140			}
141			return ret;
142			}
143
144			/* Gets the pkey_asn1_meth callback from an ENGINE structure */
145			ENGINE_PKEY_ASN1_METHS_PTR
146			ENGINE_get_pkey_asn1_meths(const ENGINE *e)
147			{
148			return e->pkey_asn1_meths;
149			}
150
151			/* Sets the pkey_asn1_meth callback in an ENGINE structure */
152			int
153			ENGINE_set_pkey_asn1_meths(ENGINE *e, ENGINE_PKEY_ASN1_METHS_PTR f)
154			{
155			e->pkey_asn1_meths = f;
156			return 1;
157			}
158
159			/* Internal function to free up EVP_PKEY_ASN1_METHOD structures before an
160			* ENGINE is destroyed
161			*/
162
163			void
164			engine_pkey_asn1_meths_free(ENGINE *e)
165			{
166			int i;
167		6192	EVP_PKEY_ASN1_METHOD *pkm;
168
169	✗✓	3096	if (e->pkey_asn1_meths) {
170			const int *pknids;
171			int npknids;
172			npknids = e->pkey_asn1_meths(e, NULL, &pknids, 0);
173			for (i = 0; i < npknids; i++) {
174			if (e->pkey_asn1_meths(e, &pkm, NULL, pknids[i])) {
175			EVP_PKEY_asn1_free(pkm);
176			}
177			}
178			}
179		3096	}
180
181			/* Find a method based on a string. This does a linear search through
182			* all implemented algorithms. This is OK in practice because only
183			* a small number of algorithms are likely to be implemented in an engine
184			* and it is not used for speed critical operations.
185			*/
186
187			const EVP_PKEY_ASN1_METHOD *
188			ENGINE_get_pkey_asn1_meth_str(ENGINE e, const char str, int len)
189			{
190			int i, nidcount;
191			const int *nids;
192			EVP_PKEY_ASN1_METHOD *ameth;
193
194			if (!e->pkey_asn1_meths)
195			return NULL;
196			if (len == -1)
197			len = strlen(str);
198			nidcount = e->pkey_asn1_meths(e, NULL, &nids, 0);
199			for (i = 0; i < nidcount; i++) {
200			e->pkey_asn1_meths(e, &ameth, NULL, nids[i]);
201			if (((int)strlen(ameth->pem_str) == len) &&
202			!strncasecmp(ameth->pem_str, str, len))
203			return ameth;
204			}
205			return NULL;
206			}
207
208			typedef struct {
209			ENGINE *e;
210			const EVP_PKEY_ASN1_METHOD *ameth;
211			const char *str;
212			int len;
213			} ENGINE_FIND_STR;
214
215			static void
216			look_str_cb(int nid, STACK_OF(ENGINE) sk, ENGINE def, void *arg)
217			{
218			ENGINE_FIND_STR *lk = arg;
219			int i;
220
221			if (lk->ameth)
222			return;
223			for (i = 0; i < sk_ENGINE_num(sk); i++) {
224			ENGINE *e = sk_ENGINE_value(sk, i);
225			EVP_PKEY_ASN1_METHOD *ameth;
226			e->pkey_asn1_meths(e, &ameth, NULL, nid);
227			if (((int)strlen(ameth->pem_str) == lk->len) &&
228			!strncasecmp(ameth->pem_str, lk->str, lk->len)) {
229			lk->e = e;
230			lk->ameth = ameth;
231			return;
232			}
233			}
234			}
235
236			const EVP_PKEY_ASN1_METHOD *
237			ENGINE_pkey_asn1_find_str(ENGINE *pe, const char str, int len)
238			{
239		56	ENGINE_FIND_STR fstr;
240
241		28	fstr.e = NULL;
242		28	fstr.ameth = NULL;
243		28	fstr.str = str;
244		28	fstr.len = len;
245		28	CRYPTO_w_lock(CRYPTO_LOCK_ENGINE);
246		28	engine_table_doall(pkey_asn1_meth_table, look_str_cb, &fstr);
247			/* If found obtain a structural reference to engine */
248	✗✓	28	if (fstr.e) {
249			fstr.e->struct_ref++;
250			engine_ref_debug(fstr.e, 0, 1)
251			}
252		28	*pe = fstr.e;
253		28	CRYPTO_w_unlock(CRYPTO_LOCK_ENGINE);
254		56	return fstr.ameth;
255		28	}