Head

GCC Code Coverage Report

Directory:	./		Exec	Total	Coverage
File:	lib/libcrypto/asn1/a_enum.c	Lines:	26	66	39.4 %
Date:	2017-11-07	Branches:	13	45	28.9 %


/* $OpenBSD: a_enum.c,v 1.18 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/asn1.h>
#include <openssl/bn.h>
#include <openssl/err.h>

/*
 * Code for ENUMERATED type: identical to INTEGER apart from a different tag.
 * for comments on encoding see a_int.c
 */

int
ASN1_ENUMERATED_set(ASN1_ENUMERATED *a, long v)
{
	int j, k;
	unsigned int i;
	unsigned char buf[sizeof(long) + 1];
	long d;

	a->type = V_ASN1_ENUMERATED;
	if (a->length < (int)(sizeof(long) + 1)) {
		free(a->data);
		a->data = calloc(1, sizeof(long) + 1);
	}
	if (a->data == NULL) {
		ASN1error(ERR_R_MALLOC_FAILURE);
		return (0);
	}
	d = v;
	if (d < 0) {
		d = -d;
		a->type = V_ASN1_NEG_ENUMERATED;
	}

	for (i = 0; i < sizeof(long); i++) {
		if (d == 0)
			break;
		buf[i] = (int)d & 0xff;
		d >>= 8;
	}
	j = 0;
	for (k = i - 1; k >= 0; k--)
		a->data[j++] = buf[k];
	a->length = j;
	return (1);
}

long
ASN1_ENUMERATED_get(ASN1_ENUMERATED *a)
{
	int neg = 0, i;
	long r = 0;

	if (a == NULL)
		return (0L);
	i = a->type;
	if (i == V_ASN1_NEG_ENUMERATED)
		neg = 1;
	else if (i != V_ASN1_ENUMERATED)
		return -1;

	if (a->length > (int)sizeof(long)) {
		/* hmm... a bit ugly */
		return -1;
	}
	if (a->data == NULL)
		return 0;

	for (i = 0; i < a->length; i++) {
		r <<= 8;
		r |= (unsigned char)a->data[i];
	}
	if (neg)
		r = -r;
	return (r);
}

ASN1_ENUMERATED *
BN_to_ASN1_ENUMERATED(BIGNUM *bn, ASN1_ENUMERATED *ai)
{
	ASN1_ENUMERATED *ret;
	int len, j;

	if (ai == NULL)
		ret = ASN1_ENUMERATED_new();
	else
		ret = ai;
	if (ret == NULL) {
		ASN1error(ERR_R_NESTED_ASN1_ERROR);
		goto err;
	}
	if (BN_is_negative(bn))
		ret->type = V_ASN1_NEG_ENUMERATED;
	else
		ret->type = V_ASN1_ENUMERATED;
	j = BN_num_bits(bn);
	len = ((j == 0) ? 0 : ((j / 8) + 1));
	if (ret->length < len + 4) {
		unsigned char *new_data = realloc(ret->data, len + 4);
		if (!new_data) {
			ASN1error(ERR_R_MALLOC_FAILURE);
			goto err;
		}
		ret->data = new_data;
	}
	ret->length = BN_bn2bin(bn, ret->data);

	/* Correct zero case */
	if (!ret->length) {
		ret->data[0] = 0;
		ret->length = 1;
	}
	return (ret);

err:
	if (ret != ai)
		ASN1_ENUMERATED_free(ret);
	return (NULL);
}

BIGNUM *
ASN1_ENUMERATED_to_BN(ASN1_ENUMERATED *ai, BIGNUM *bn)
{
	BIGNUM *ret;

	if ((ret = BN_bin2bn(ai->data, ai->length, bn)) == NULL)
		ASN1error(ASN1_R_BN_LIB);
	else if (ai->type == V_ASN1_NEG_ENUMERATED)
		BN_set_negative(ret, 1);
	return (ret);
}


Generated by: GCOVR (Version 3.3)

Line	Branch	Exec	Source
1			/* $OpenBSD: a_enum.c,v 1.18 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/asn1.h>
62			#include <openssl/bn.h>
63			#include <openssl/err.h>
64
65			/*
66			* Code for ENUMERATED type: identical to INTEGER apart from a different tag.
67			* for comments on encoding see a_int.c
68			*/
69
70			int
71			ASN1_ENUMERATED_set(ASN1_ENUMERATED *a, long v)
72			{
73			int j, k;
74			unsigned int i;
75		8	unsigned char buf[sizeof(long) + 1];
76			long d;
77
78		4	a->type = V_ASN1_ENUMERATED;
79	✓✗	4	if (a->length < (int)(sizeof(long) + 1)) {
80		4	free(a->data);
81		4	a->data = calloc(1, sizeof(long) + 1);
82		4	}
83	✗✓	4	if (a->data == NULL) {
84			ASN1error(ERR_R_MALLOC_FAILURE);
85			return (0);
86			}
87			d = v;
88	✗✓	4	if (d < 0) {
89			d = -d;
90			a->type = V_ASN1_NEG_ENUMERATED;
91			}
92
93	✗✓	12	for (i = 0; i < sizeof(long); i++) {
94		4	if (d == 0)
95			break;
96			buf[i] = (int)d & 0xff;
97			d >>= 8;
98			}
99			j = 0;
100	✗✓	8	for (k = i - 1; k >= 0; k--)
101			a->data[j++] = buf[k];
102		4	a->length = j;
103		4	return (1);
104		4	}
105
106			long
107			ASN1_ENUMERATED_get(ASN1_ENUMERATED *a)
108			{
109			int neg = 0, i;
110			long r = 0;
111
112	✗✓	20	if (a == NULL)
113			return (0L);
114		10	i = a->type;
115	✗✓	10	if (i == V_ASN1_NEG_ENUMERATED)
116			neg = 1;
117	✗✓	10	else if (i != V_ASN1_ENUMERATED)
118			return -1;
119
120	✗✓	10	if (a->length > (int)sizeof(long)) {
121			/* hmm... a bit ugly */
122			return -1;
123			}
124	✗✓	10	if (a->data == NULL)
125			return 0;
126
127	✓✓	28	for (i = 0; i < a->length; i++) {
128		4	r <<= 8;
129		4	r \|= (unsigned char)a->data[i];
130			}
131	✗✓	10	if (neg)
132			r = -r;
133		10	return (r);
134		10	}
135
136			ASN1_ENUMERATED *
137			BN_to_ASN1_ENUMERATED(BIGNUM bn, ASN1_ENUMERATED ai)
138			{
139			ASN1_ENUMERATED *ret;
140			int len, j;
141
142			if (ai == NULL)
143			ret = ASN1_ENUMERATED_new();
144			else
145			ret = ai;
146			if (ret == NULL) {
147			ASN1error(ERR_R_NESTED_ASN1_ERROR);
148			goto err;
149			}
150			if (BN_is_negative(bn))
151			ret->type = V_ASN1_NEG_ENUMERATED;
152			else
153			ret->type = V_ASN1_ENUMERATED;
154			j = BN_num_bits(bn);
155			len = ((j == 0) ? 0 : ((j / 8) + 1));
156			if (ret->length < len + 4) {
157			unsigned char *new_data = realloc(ret->data, len + 4);
158			if (!new_data) {
159			ASN1error(ERR_R_MALLOC_FAILURE);
160			goto err;
161			}
162			ret->data = new_data;
163			}
164			ret->length = BN_bn2bin(bn, ret->data);
165
166			/* Correct zero case */
167			if (!ret->length) {
168			ret->data[0] = 0;
169			ret->length = 1;
170			}
171			return (ret);
172
173			err:
174			if (ret != ai)
175			ASN1_ENUMERATED_free(ret);
176			return (NULL);
177			}
178
179			BIGNUM *
180			ASN1_ENUMERATED_to_BN(ASN1_ENUMERATED ai, BIGNUM bn)
181			{
182			BIGNUM *ret;
183
184			if ((ret = BN_bin2bn(ai->data, ai->length, bn)) == NULL)
185			ASN1error(ASN1_R_BN_LIB);
186			else if (ai->type == V_ASN1_NEG_ENUMERATED)
187			BN_set_negative(ret, 1);
188			return (ret);
189			}