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GCC Code Coverage Report

Directory:	./		Exec	Total	Coverage
File:	lib/libcrypto/asn1/bio_ndef.c	Lines:	0	74	0.0 %
Date:	2017-11-07	Branches:	0	22	0.0 %


/* $OpenBSD: bio_ndef.c,v 1.10 2017/01/29 17:49:22 beck Exp $ */
/* Written by Dr Stephen N Henson (steve@openssl.org) for the OpenSSL
 * project.
 */
/* ====================================================================
 * Copyright (c) 2008 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.
 * ====================================================================
 *
 */

#include <openssl/asn1.h>
#include <openssl/asn1t.h>
#include <openssl/bio.h>
#include <openssl/err.h>

#include <stdio.h>

/* Experimental NDEF ASN1 BIO support routines */

/* The usage is quite simple, initialize an ASN1 structure,
 * get a BIO from it then any data written through the BIO
 * will end up translated to approptiate format on the fly.
 * The data is streamed out and does *not* need to be
 * all held in memory at once.
 *
 * When the BIO is flushed the output is finalized and any
 * signatures etc written out.
 *
 * The BIO is a 'proper' BIO and can handle non blocking I/O
 * correctly.
 *
 * The usage is simple. The implementation is *not*...
 */

/* BIO support data stored in the ASN1 BIO ex_arg */

typedef struct ndef_aux_st {
	/* ASN1 structure this BIO refers to */
	ASN1_VALUE *val;
	const ASN1_ITEM *it;
	/* Top of the BIO chain */
	BIO *ndef_bio;
	/* Output BIO */
	BIO *out;
	/* Boundary where content is inserted */
	unsigned char **boundary;
	/* DER buffer start */
	unsigned char *derbuf;
} NDEF_SUPPORT;

static int ndef_prefix(BIO *b, unsigned char **pbuf, int *plen, void *parg);
static int ndef_prefix_free(BIO *b, unsigned char **pbuf, int *plen, void *parg);
static int ndef_suffix(BIO *b, unsigned char **pbuf, int *plen, void *parg);
static int ndef_suffix_free(BIO *b, unsigned char **pbuf, int *plen, void *parg);

BIO *
BIO_new_NDEF(BIO *out, ASN1_VALUE *val, const ASN1_ITEM *it)
{
	NDEF_SUPPORT *ndef_aux = NULL;
	BIO *asn_bio = NULL;
	const ASN1_AUX *aux = it->funcs;
	ASN1_STREAM_ARG sarg;

	if (!aux || !aux->asn1_cb) {
		ASN1error(ASN1_R_STREAMING_NOT_SUPPORTED);
		return NULL;
	}
	ndef_aux = malloc(sizeof(NDEF_SUPPORT));
	asn_bio = BIO_new(BIO_f_asn1());

	/* ASN1 bio needs to be next to output BIO */

	out = BIO_push(asn_bio, out);

	if (!ndef_aux || !asn_bio || !out)
		goto err;

	BIO_asn1_set_prefix(asn_bio, ndef_prefix, ndef_prefix_free);
	BIO_asn1_set_suffix(asn_bio, ndef_suffix, ndef_suffix_free);

	/* Now let callback prepend any digest, cipher etc BIOs
	 * ASN1 structure needs.
	 */

	sarg.out = out;
	sarg.ndef_bio = NULL;
	sarg.boundary = NULL;

	if (aux->asn1_cb(ASN1_OP_STREAM_PRE, &val, it, &sarg) <= 0)
		goto err;

	ndef_aux->val = val;
	ndef_aux->it = it;
	ndef_aux->ndef_bio = sarg.ndef_bio;
	ndef_aux->boundary = sarg.boundary;
	ndef_aux->out = out;

	BIO_ctrl(asn_bio, BIO_C_SET_EX_ARG, 0, ndef_aux);

	return sarg.ndef_bio;

err:
	BIO_free(asn_bio);
	free(ndef_aux);
	return NULL;
}

static int
ndef_prefix(BIO *b, unsigned char **pbuf, int *plen, void *parg)
{
	NDEF_SUPPORT *ndef_aux;
	unsigned char *p;
	int derlen;

	if (!parg)
		return 0;

	ndef_aux = *(NDEF_SUPPORT **)parg;

	derlen = ASN1_item_ndef_i2d(ndef_aux->val, NULL, ndef_aux->it);
	p = malloc(derlen);
	ndef_aux->derbuf = p;
	*pbuf = p;
	derlen = ASN1_item_ndef_i2d(ndef_aux->val, &p, ndef_aux->it);

	if (!*ndef_aux->boundary)
		return 0;

	*plen = *ndef_aux->boundary - *pbuf;

	return 1;
}

static int
ndef_prefix_free(BIO *b, unsigned char **pbuf, int *plen, void *parg)
{
	NDEF_SUPPORT *ndef_aux;

	if (!parg)
		return 0;

	ndef_aux = *(NDEF_SUPPORT **)parg;

	free(ndef_aux->derbuf);

	ndef_aux->derbuf = NULL;
	*pbuf = NULL;
	*plen = 0;
	return 1;
}

static int
ndef_suffix_free(BIO *b, unsigned char **pbuf, int *plen, void *parg)
{
	NDEF_SUPPORT **pndef_aux = (NDEF_SUPPORT **)parg;
	if (!ndef_prefix_free(b, pbuf, plen, parg))
		return 0;
	free(*pndef_aux);
	*pndef_aux = NULL;
	return 1;
}

static int
ndef_suffix(BIO *b, unsigned char **pbuf, int *plen, void *parg)
{
	NDEF_SUPPORT *ndef_aux;
	unsigned char *p;
	int derlen;
	const ASN1_AUX *aux;
	ASN1_STREAM_ARG sarg;

	if (!parg)
		return 0;

	ndef_aux = *(NDEF_SUPPORT **)parg;

	aux = ndef_aux->it->funcs;

	/* Finalize structures */
	sarg.ndef_bio = ndef_aux->ndef_bio;
	sarg.out = ndef_aux->out;
	sarg.boundary = ndef_aux->boundary;
	if (aux->asn1_cb(ASN1_OP_STREAM_POST,
	    &ndef_aux->val, ndef_aux->it, &sarg) <= 0)
		return 0;

	derlen = ASN1_item_ndef_i2d(ndef_aux->val, NULL, ndef_aux->it);
	p = malloc(derlen);
	ndef_aux->derbuf = p;
	*pbuf = p;
	derlen = ASN1_item_ndef_i2d(ndef_aux->val, &p, ndef_aux->it);

	if (!*ndef_aux->boundary)
		return 0;
	*pbuf = *ndef_aux->boundary;
	*plen = derlen - (*ndef_aux->boundary - ndef_aux->derbuf);

	return 1;
}


Generated by: GCOVR (Version 3.3)

Line	Branch	Exec	Source
1			/* $OpenBSD: bio_ndef.c,v 1.10 2017/01/29 17:49:22 beck Exp $ */
2			/* Written by Dr Stephen N Henson (steve@openssl.org) for the OpenSSL
3			* project.
4			*/
5			/* ====================================================================
6			* Copyright (c) 2008 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			*/
54
55			#include <openssl/asn1.h>
56			#include <openssl/asn1t.h>
57			#include <openssl/bio.h>
58			#include <openssl/err.h>
59
60			#include <stdio.h>
61
62			/* Experimental NDEF ASN1 BIO support routines */
63
64			/* The usage is quite simple, initialize an ASN1 structure,
65			* get a BIO from it then any data written through the BIO
66			* will end up translated to approptiate format on the fly.
67			* The data is streamed out and does not need to be
68			* all held in memory at once.
69			*
70			* When the BIO is flushed the output is finalized and any
71			* signatures etc written out.
72			*
73			* The BIO is a 'proper' BIO and can handle non blocking I/O
74			* correctly.
75			*
76			* The usage is simple. The implementation is not...
77			*/
78
79			/* BIO support data stored in the ASN1 BIO ex_arg */
80
81			typedef struct ndef_aux_st {
82			/* ASN1 structure this BIO refers to */
83			ASN1_VALUE *val;
84			const ASN1_ITEM *it;
85			/* Top of the BIO chain */
86			BIO *ndef_bio;
87			/* Output BIO */
88			BIO *out;
89			/* Boundary where content is inserted */
90			unsigned char **boundary;
91			/* DER buffer start */
92			unsigned char *derbuf;
93			} NDEF_SUPPORT;
94
95			static int ndef_prefix(BIO b, unsigned char pbuf, int plen, void *parg);
96			static int ndef_prefix_free(BIO b, unsigned char pbuf, int plen, void *parg);
97			static int ndef_suffix(BIO b, unsigned char pbuf, int plen, void *parg);
98			static int ndef_suffix_free(BIO b, unsigned char pbuf, int plen, void *parg);
99
100			BIO *
101			BIO_new_NDEF(BIO out, ASN1_VALUE val, const ASN1_ITEM *it)
102			{
103			NDEF_SUPPORT *ndef_aux = NULL;
104			BIO *asn_bio = NULL;
105			const ASN1_AUX *aux = it->funcs;
106			ASN1_STREAM_ARG sarg;
107
108			if (!aux \|\| !aux->asn1_cb) {
109			ASN1error(ASN1_R_STREAMING_NOT_SUPPORTED);
110			return NULL;
111			}
112			ndef_aux = malloc(sizeof(NDEF_SUPPORT));
113			asn_bio = BIO_new(BIO_f_asn1());
114
115			/* ASN1 bio needs to be next to output BIO */
116
117			out = BIO_push(asn_bio, out);
118
119			if (!ndef_aux \|\| !asn_bio \|\| !out)
120			goto err;
121
122			BIO_asn1_set_prefix(asn_bio, ndef_prefix, ndef_prefix_free);
123			BIO_asn1_set_suffix(asn_bio, ndef_suffix, ndef_suffix_free);
124
125			/* Now let callback prepend any digest, cipher etc BIOs
126			* ASN1 structure needs.
127			*/
128
129			sarg.out = out;
130			sarg.ndef_bio = NULL;
131			sarg.boundary = NULL;
132
133			if (aux->asn1_cb(ASN1_OP_STREAM_PRE, &val, it, &sarg) <= 0)
134			goto err;
135
136			ndef_aux->val = val;
137			ndef_aux->it = it;
138			ndef_aux->ndef_bio = sarg.ndef_bio;
139			ndef_aux->boundary = sarg.boundary;
140			ndef_aux->out = out;
141
142			BIO_ctrl(asn_bio, BIO_C_SET_EX_ARG, 0, ndef_aux);
143
144			return sarg.ndef_bio;
145
146			err:
147			BIO_free(asn_bio);
148			free(ndef_aux);
149			return NULL;
150			}
151
152			static int
153			ndef_prefix(BIO b, unsigned char pbuf, int plen, void *parg)
154			{
155			NDEF_SUPPORT *ndef_aux;
156			unsigned char *p;
157			int derlen;
158
159			if (!parg)
160			return 0;
161
162			ndef_aux = (NDEF_SUPPORT *)parg;
163
164			derlen = ASN1_item_ndef_i2d(ndef_aux->val, NULL, ndef_aux->it);
165			p = malloc(derlen);
166			ndef_aux->derbuf = p;
167			*pbuf = p;
168			derlen = ASN1_item_ndef_i2d(ndef_aux->val, &p, ndef_aux->it);
169
170			if (!*ndef_aux->boundary)
171			return 0;
172
173			plen = ndef_aux->boundary - *pbuf;
174
175			return 1;
176			}
177
178			static int
179			ndef_prefix_free(BIO b, unsigned char pbuf, int plen, void *parg)
180			{
181			NDEF_SUPPORT *ndef_aux;
182
183			if (!parg)
184			return 0;
185
186			ndef_aux = (NDEF_SUPPORT *)parg;
187
188			free(ndef_aux->derbuf);
189
190			ndef_aux->derbuf = NULL;
191			*pbuf = NULL;
192			*plen = 0;
193			return 1;
194			}
195
196			static int
197			ndef_suffix_free(BIO b, unsigned char pbuf, int plen, void *parg)
198			{
199			NDEF_SUPPORT pndef_aux = (NDEF_SUPPORT )parg;
200			if (!ndef_prefix_free(b, pbuf, plen, parg))
201			return 0;
202			free(*pndef_aux);
203			*pndef_aux = NULL;
204			return 1;
205			}
206
207			static int
208			ndef_suffix(BIO b, unsigned char pbuf, int plen, void *parg)
209			{
210			NDEF_SUPPORT *ndef_aux;
211			unsigned char *p;
212			int derlen;
213			const ASN1_AUX *aux;
214			ASN1_STREAM_ARG sarg;
215
216			if (!parg)
217			return 0;
218
219			ndef_aux = (NDEF_SUPPORT *)parg;
220
221			aux = ndef_aux->it->funcs;
222
223			/* Finalize structures */
224			sarg.ndef_bio = ndef_aux->ndef_bio;
225			sarg.out = ndef_aux->out;
226			sarg.boundary = ndef_aux->boundary;
227			if (aux->asn1_cb(ASN1_OP_STREAM_POST,
228			&ndef_aux->val, ndef_aux->it, &sarg) <= 0)
229			return 0;
230
231			derlen = ASN1_item_ndef_i2d(ndef_aux->val, NULL, ndef_aux->it);
232			p = malloc(derlen);
233			ndef_aux->derbuf = p;
234			*pbuf = p;
235			derlen = ASN1_item_ndef_i2d(ndef_aux->val, &p, ndef_aux->it);
236
237			if (!*ndef_aux->boundary)
238			return 0;
239			pbuf = ndef_aux->boundary;
240			plen = derlen - (ndef_aux->boundary - ndef_aux->derbuf);
241
242			return 1;
243			}