Head

GCC Code Coverage Report

Directory:	./		Exec	Total	Coverage
File:	lib/libcrypto/asn1/asn_pack.c	Lines:	15	70	21.4 %
Date:	2017-11-07	Branches:	8	48	16.7 %


/* $OpenBSD: asn_pack.c,v 1.16 2017/01/29 17:49:22 beck Exp $ */
/* Written by Dr Stephen N Henson (steve@openssl.org) for the OpenSSL
 * project 1999.
 */
/* ====================================================================
 * Copyright (c) 1999 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 <stdio.h>

#include <openssl/asn1.h>
#include <openssl/err.h>

#ifndef NO_ASN1_OLD

/* ASN1 packing and unpacking functions */

/* Turn an ASN1 encoded SEQUENCE OF into a STACK of structures */

STACK_OF(OPENSSL_BLOCK) *
ASN1_seq_unpack(const unsigned char *buf, int len, d2i_of_void *d2i,
    void (*free_func)(OPENSSL_BLOCK))
{
	STACK_OF(OPENSSL_BLOCK) *sk;
	const unsigned char *pbuf;

	pbuf = buf;
	if (!(sk = d2i_ASN1_SET(NULL, &pbuf, len, d2i, free_func,
					V_ASN1_SEQUENCE, V_ASN1_UNIVERSAL)))
		ASN1error(ASN1_R_DECODE_ERROR);
	return sk;
}

/* Turn a STACK structures into an ASN1 encoded SEQUENCE OF structure in a
 * OPENSSL_malloc'ed buffer
 */

unsigned char *
ASN1_seq_pack(STACK_OF(OPENSSL_BLOCK) *safes, i2d_of_void *i2d,
    unsigned char **buf, int *len)
{
	int safelen;
	unsigned char *safe, *p;

	if (!(safelen = i2d_ASN1_SET(safes, NULL, i2d, V_ASN1_SEQUENCE,
					      V_ASN1_UNIVERSAL, IS_SEQUENCE))) {
		ASN1error(ASN1_R_ENCODE_ERROR);
		return NULL;
	}
	if (!(safe = malloc(safelen))) {
		ASN1error(ERR_R_MALLOC_FAILURE);
		return NULL;
	}
	p = safe;
	i2d_ASN1_SET(safes, &p, i2d, V_ASN1_SEQUENCE, V_ASN1_UNIVERSAL,
								 IS_SEQUENCE);
	if (len)
		*len = safelen;
	if (buf)
		*buf = safe;
	return safe;
}

/* Extract an ASN1 object from an ASN1_STRING */

void *
ASN1_unpack_string(ASN1_STRING *oct, d2i_of_void *d2i)
{
	const unsigned char *p;
	char *ret;

	p = oct->data;
	if (!(ret = d2i(NULL, &p, oct->length)))
		ASN1error(ASN1_R_DECODE_ERROR);
	return ret;
}

/* Pack an ASN1 object into an ASN1_STRING */

ASN1_STRING *
ASN1_pack_string(void *obj, i2d_of_void *i2d, ASN1_STRING **oct)
{
	unsigned char *p;
	ASN1_STRING *octmp;

	if (!oct || !*oct) {
		if (!(octmp = ASN1_STRING_new())) {
			ASN1error(ERR_R_MALLOC_FAILURE);
			return NULL;
		}
	} else
		octmp = *oct;

	if (!(octmp->length = i2d(obj, NULL))) {
		ASN1error(ASN1_R_ENCODE_ERROR);
		goto err;
	}
	if (!(p = malloc (octmp->length))) {
		ASN1error(ERR_R_MALLOC_FAILURE);
		goto err;
	}
	octmp->data = p;
	i2d (obj, &p);
	if (oct)
		*oct = octmp;
	return octmp;
err:
	if (!oct || octmp != *oct) {
		ASN1_STRING_free(octmp);
		if (oct)
			*oct = NULL;
	}
	return NULL;
}

#endif

/* ASN1_ITEM versions of the above */

ASN1_STRING *
ASN1_item_pack(void *obj, const ASN1_ITEM *it, ASN1_STRING **oct)
{
	ASN1_STRING *octmp;

	if (!oct || !*oct) {
		if (!(octmp = ASN1_STRING_new ())) {
			ASN1error(ERR_R_MALLOC_FAILURE);
			return NULL;
		}
	} else
		octmp = *oct;

	free(octmp->data);
	octmp->data = NULL;

	if (!(octmp->length = ASN1_item_i2d(obj, &octmp->data, it))) {
		ASN1error(ASN1_R_ENCODE_ERROR);
		goto err;
	}
	if (!octmp->data) {
		ASN1error(ERR_R_MALLOC_FAILURE);
		goto err;
	}
	if (oct)
		*oct = octmp;
	return octmp;
err:
	if (!oct || octmp != *oct)
		ASN1_STRING_free(octmp);
	return NULL;
}

/* Extract an ASN1 object from an ASN1_STRING */

void *
ASN1_item_unpack(ASN1_STRING *oct, const ASN1_ITEM *it)
{
	const unsigned char *p;
	void *ret;

	p = oct->data;
	if (!(ret = ASN1_item_d2i(NULL, &p, oct->length, it)))
		ASN1error(ASN1_R_DECODE_ERROR);
	return ret;
}


Generated by: GCOVR (Version 3.3)

Line	Branch	Exec	Source
1			/* $OpenBSD: asn_pack.c,v 1.16 2017/01/29 17:49:22 beck Exp $ */
2			/* Written by Dr Stephen N Henson (steve@openssl.org) for the OpenSSL
3			* project 1999.
4			*/
5			/* ====================================================================
6			* Copyright (c) 1999 The OpenSSL Project. All rights reserved.
7			*
8			* Redistribution and use in source and binary forms, with or without
9			* modification, are permitted provided that the following conditions
10			* are met:
11			*
12			* 1. Redistributions of source code must retain the above copyright
13			* notice, this list of conditions and the following disclaimer.
14			*
15			* 2. Redistributions in binary form must reproduce the above copyright
16			* notice, this list of conditions and the following disclaimer in
17			* the documentation and/or other materials provided with the
18			* distribution.
19			*
20			* 3. All advertising materials mentioning features or use of this
21			* software must display the following acknowledgment:
22			* "This product includes software developed by the OpenSSL Project
23			* for use in the OpenSSL Toolkit. (http://www.OpenSSL.org/)"
24			*
25			* 4. The names "OpenSSL Toolkit" and "OpenSSL Project" must not be used to
26			* endorse or promote products derived from this software without
27			* prior written permission. For written permission, please contact
28			* licensing@OpenSSL.org.
29			*
30			* 5. Products derived from this software may not be called "OpenSSL"
31			* nor may "OpenSSL" appear in their names without prior written
32			* permission of the OpenSSL Project.
33			*
34			* 6. Redistributions of any form whatsoever must retain the following
35			* acknowledgment:
36			* "This product includes software developed by the OpenSSL Project
37			* for use in the OpenSSL Toolkit (http://www.OpenSSL.org/)"
38			*
39			* THIS SOFTWARE IS PROVIDED BY THE OpenSSL PROJECT ``AS IS'' AND ANY
40			* EXPRESSED OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
41			* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
42			* PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE OpenSSL PROJECT OR
43			* ITS CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
44			* SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
45			* NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
46			* LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
47			* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT,
48			* STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
49			* ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED
50			* OF THE POSSIBILITY OF SUCH DAMAGE.
51			* ====================================================================
52			*
53			* This product includes cryptographic software written by Eric Young
54			* (eay@cryptsoft.com). This product includes software written by Tim
55			* Hudson (tjh@cryptsoft.com).
56			*
57			*/
58
59			#include <stdio.h>
60
61			#include <openssl/asn1.h>
62			#include <openssl/err.h>
63
64			#ifndef NO_ASN1_OLD
65
66			/* ASN1 packing and unpacking functions */
67
68			/* Turn an ASN1 encoded SEQUENCE OF into a STACK of structures */
69
70			STACK_OF(OPENSSL_BLOCK) *
71			ASN1_seq_unpack(const unsigned char buf, int len, d2i_of_void d2i,
72			void (*free_func)(OPENSSL_BLOCK))
73			{
74			STACK_OF(OPENSSL_BLOCK) *sk;
75			const unsigned char *pbuf;
76
77			pbuf = buf;
78			if (!(sk = d2i_ASN1_SET(NULL, &pbuf, len, d2i, free_func,
79			V_ASN1_SEQUENCE, V_ASN1_UNIVERSAL)))
80			ASN1error(ASN1_R_DECODE_ERROR);
81			return sk;
82			}
83
84			/* Turn a STACK structures into an ASN1 encoded SEQUENCE OF structure in a
85			* OPENSSL_malloc'ed buffer
86			*/
87
88			unsigned char *
89			ASN1_seq_pack(STACK_OF(OPENSSL_BLOCK) safes, i2d_of_void i2d,
90			unsigned char *buf, int len)
91			{
92			int safelen;
93			unsigned char safe, p;
94
95			if (!(safelen = i2d_ASN1_SET(safes, NULL, i2d, V_ASN1_SEQUENCE,
96			V_ASN1_UNIVERSAL, IS_SEQUENCE))) {
97			ASN1error(ASN1_R_ENCODE_ERROR);
98			return NULL;
99			}
100			if (!(safe = malloc(safelen))) {
101			ASN1error(ERR_R_MALLOC_FAILURE);
102			return NULL;
103			}
104			p = safe;
105			i2d_ASN1_SET(safes, &p, i2d, V_ASN1_SEQUENCE, V_ASN1_UNIVERSAL,
106			IS_SEQUENCE);
107			if (len)
108			*len = safelen;
109			if (buf)
110			*buf = safe;
111			return safe;
112			}
113
114			/* Extract an ASN1 object from an ASN1_STRING */
115
116			void *
117			ASN1_unpack_string(ASN1_STRING oct, d2i_of_void d2i)
118			{
119			const unsigned char *p;
120			char *ret;
121
122			p = oct->data;
123			if (!(ret = d2i(NULL, &p, oct->length)))
124			ASN1error(ASN1_R_DECODE_ERROR);
125			return ret;
126			}
127
128			/* Pack an ASN1 object into an ASN1_STRING */
129
130			ASN1_STRING *
131			ASN1_pack_string(void obj, i2d_of_void i2d, ASN1_STRING **oct)
132			{
133			unsigned char *p;
134			ASN1_STRING *octmp;
135
136			if (!oct \|\| !*oct) {
137			if (!(octmp = ASN1_STRING_new())) {
138			ASN1error(ERR_R_MALLOC_FAILURE);
139			return NULL;
140			}
141			} else
142			octmp = *oct;
143
144			if (!(octmp->length = i2d(obj, NULL))) {
145			ASN1error(ASN1_R_ENCODE_ERROR);
146			goto err;
147			}
148			if (!(p = malloc (octmp->length))) {
149			ASN1error(ERR_R_MALLOC_FAILURE);
150			goto err;
151			}
152			octmp->data = p;
153			i2d (obj, &p);
154			if (oct)
155			*oct = octmp;
156			return octmp;
157			err:
158			if (!oct \|\| octmp != *oct) {
159			ASN1_STRING_free(octmp);
160			if (oct)
161			*oct = NULL;
162			}
163			return NULL;
164			}
165
166			#endif
167
168			/* ASN1_ITEM versions of the above */
169
170			ASN1_STRING *
171			ASN1_item_pack(void obj, const ASN1_ITEM it, ASN1_STRING **oct)
172			{
173			ASN1_STRING *octmp;
174
175	✓✗✓✓	144	if (!oct \|\| !*oct) {
176	✗✓	40	if (!(octmp = ASN1_STRING_new ())) {
177			ASN1error(ERR_R_MALLOC_FAILURE);
178			return NULL;
179			}
180			} else
181			octmp = *oct;
182
183		48	free(octmp->data);
184		48	octmp->data = NULL;
185
186	✗✓	48	if (!(octmp->length = ASN1_item_i2d(obj, &octmp->data, it))) {
187			ASN1error(ASN1_R_ENCODE_ERROR);
188			goto err;
189			}
190	✗✓	48	if (!octmp->data) {
191			ASN1error(ERR_R_MALLOC_FAILURE);
192			goto err;
193			}
194	✓✗	48	if (oct)
195		48	*oct = octmp;
196		48	return octmp;
197			err:
198			if (!oct \|\| octmp != *oct)
199			ASN1_STRING_free(octmp);
200			return NULL;
201		48	}
202
203			/* Extract an ASN1 object from an ASN1_STRING */
204
205			void *
206			ASN1_item_unpack(ASN1_STRING oct, const ASN1_ITEM it)
207			{
208		44	const unsigned char *p;
209			void *ret;
210
211		22	p = oct->data;
212	✗✓	22	if (!(ret = ASN1_item_d2i(NULL, &p, oct->length, it)))
213			ASN1error(ASN1_R_DECODE_ERROR);
214		22	return ret;
215		22	}