Head

GCC Code Coverage Report

Directory:	./		Exec	Total	Coverage
File:	lib/libcrypto/crypto/../../libssl/src/crypto/pkcs7/pk7_lib.c	Lines:	142	325	43.7 %
Date:	2016-12-06	Branches:	68	189	36.0 %


/* $OpenBSD: pk7_lib.c,v 1.18 2015/09/30 18:41:06 jsing 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/err.h>
#include <openssl/objects.h>
#include <openssl/x509.h>

#include "asn1_locl.h"

long
PKCS7_ctrl(PKCS7 *p7, int cmd, long larg, char *parg)
{
	int nid;
	long ret;

	nid = OBJ_obj2nid(p7->type);

	switch (cmd) {
	case PKCS7_OP_SET_DETACHED_SIGNATURE:
		if (nid == NID_pkcs7_signed) {
			ret = p7->detached = (int)larg;
			if (ret && PKCS7_type_is_data(p7->d.sign->contents)) {
				ASN1_OCTET_STRING *os;
				os = p7->d.sign->contents->d.data;
				ASN1_OCTET_STRING_free(os);
				p7->d.sign->contents->d.data = NULL;
			}
		} else {
			PKCS7err(PKCS7_F_PKCS7_CTRL,
			    PKCS7_R_OPERATION_NOT_SUPPORTED_ON_THIS_TYPE);
			ret = 0;
		}
		break;
	case PKCS7_OP_GET_DETACHED_SIGNATURE:
		if (nid == NID_pkcs7_signed) {
			if (!p7->d.sign  || !p7->d.sign->contents->d.ptr)
				ret = 1;
			else
				ret = 0;

			p7->detached = ret;
		} else {
			PKCS7err(PKCS7_F_PKCS7_CTRL,
			    PKCS7_R_OPERATION_NOT_SUPPORTED_ON_THIS_TYPE);
			ret = 0;
		}

		break;
	default:
		PKCS7err(PKCS7_F_PKCS7_CTRL, PKCS7_R_UNKNOWN_OPERATION);
		ret = 0;
	}
	return (ret);
}

int
PKCS7_content_new(PKCS7 *p7, int type)
{
	PKCS7 *ret = NULL;

	if ((ret = PKCS7_new()) == NULL)
		goto err;
	if (!PKCS7_set_type(ret, type))
		goto err;
	if (!PKCS7_set_content(p7, ret))
		goto err;

	return (1);
err:
	if (ret != NULL)
		PKCS7_free(ret);
	return (0);
}

int
PKCS7_set_content(PKCS7 *p7, PKCS7 *p7_data)
{
	int i;

	i = OBJ_obj2nid(p7->type);
	switch (i) {
	case NID_pkcs7_signed:
		if (p7->d.sign->contents != NULL)
			PKCS7_free(p7->d.sign->contents);
		p7->d.sign->contents = p7_data;
		break;
	case NID_pkcs7_digest:
		if (p7->d.digest->contents != NULL)
			PKCS7_free(p7->d.digest->contents);
		p7->d.digest->contents = p7_data;
		break;
	case NID_pkcs7_data:
	case NID_pkcs7_enveloped:
	case NID_pkcs7_signedAndEnveloped:
	case NID_pkcs7_encrypted:
	default:
		PKCS7err(PKCS7_F_PKCS7_SET_CONTENT,
		    PKCS7_R_UNSUPPORTED_CONTENT_TYPE);
		goto err;
	}
	return (1);
err:
	return (0);
}

int
PKCS7_set_type(PKCS7 *p7, int type)
{
	ASN1_OBJECT *obj;

	/*PKCS7_content_free(p7);*/
	obj=OBJ_nid2obj(type); /* will not fail */

	switch (type) {
	case NID_pkcs7_signed:
		p7->type = obj;
		if ((p7->d.sign = PKCS7_SIGNED_new()) == NULL)
			goto err;
		if (!ASN1_INTEGER_set(p7->d.sign->version, 1)) {
			PKCS7_SIGNED_free(p7->d.sign);
			p7->d.sign = NULL;
			goto err;
		}
		break;
	case NID_pkcs7_data:
		p7->type = obj;
		if ((p7->d.data = ASN1_OCTET_STRING_new()) == NULL)
			goto err;
		break;
	case NID_pkcs7_signedAndEnveloped:
		p7->type = obj;
		if ((p7->d.signed_and_enveloped =
		    PKCS7_SIGN_ENVELOPE_new()) == NULL)
			goto err;
		ASN1_INTEGER_set(p7->d.signed_and_enveloped->version, 1);
		if (!ASN1_INTEGER_set(p7->d.signed_and_enveloped->version, 1))
			goto err;
		p7->d.signed_and_enveloped->enc_data->content_type =
		    OBJ_nid2obj(NID_pkcs7_data);
		break;
	case NID_pkcs7_enveloped:
		p7->type = obj;
		if ((p7->d.enveloped = PKCS7_ENVELOPE_new()) == NULL)
			goto err;
		if (!ASN1_INTEGER_set(p7->d.enveloped->version, 0))
			goto err;
		p7->d.enveloped->enc_data->content_type =
		    OBJ_nid2obj(NID_pkcs7_data);
		break;
	case NID_pkcs7_encrypted:
		p7->type = obj;
		if ((p7->d.encrypted = PKCS7_ENCRYPT_new()) == NULL)
			goto err;
		if (!ASN1_INTEGER_set(p7->d.encrypted->version, 0))
			goto err;
		p7->d.encrypted->enc_data->content_type =
		    OBJ_nid2obj(NID_pkcs7_data);
		break;

	case NID_pkcs7_digest:
		p7->type = obj;
		if ((p7->d.digest = PKCS7_DIGEST_new()) == NULL)
			goto err;
		if (!ASN1_INTEGER_set(p7->d.digest->version, 0))
			goto err;
		break;
	default:
		PKCS7err(PKCS7_F_PKCS7_SET_TYPE,
		    PKCS7_R_UNSUPPORTED_CONTENT_TYPE);
		goto err;
	}
	return (1);
err:
	return (0);
}

int
PKCS7_set0_type_other(PKCS7 *p7, int type, ASN1_TYPE *other)
{
	p7->type = OBJ_nid2obj(type);
	p7->d.other = other;
	return 1;
}

int
PKCS7_add_signer(PKCS7 *p7, PKCS7_SIGNER_INFO *psi)
{
	int i, j, nid;
	X509_ALGOR *alg;
	STACK_OF(PKCS7_SIGNER_INFO) *signer_sk;
	STACK_OF(X509_ALGOR) *md_sk;

	i = OBJ_obj2nid(p7->type);
	switch (i) {
	case NID_pkcs7_signed:
		signer_sk = p7->d.sign->signer_info;
		md_sk = p7->d.sign->md_algs;
		break;
	case NID_pkcs7_signedAndEnveloped:
		signer_sk = p7->d.signed_and_enveloped->signer_info;
		md_sk = p7->d.signed_and_enveloped->md_algs;
		break;
	default:
		PKCS7err(PKCS7_F_PKCS7_ADD_SIGNER, PKCS7_R_WRONG_CONTENT_TYPE);
		return (0);
	}

	nid = OBJ_obj2nid(psi->digest_alg->algorithm);

	/* If the digest is not currently listed, add it */
	j = 0;
	for (i = 0; i < sk_X509_ALGOR_num(md_sk); i++) {
		alg = sk_X509_ALGOR_value(md_sk, i);
		if (OBJ_obj2nid(alg->algorithm) == nid) {
			j = 1;
			break;
		}
	}
	if (!j) /* we need to add another algorithm */
	{
		if (!(alg = X509_ALGOR_new()) ||
		    !(alg->parameter = ASN1_TYPE_new())) {
			X509_ALGOR_free(alg);
			PKCS7err(PKCS7_F_PKCS7_ADD_SIGNER,
			    ERR_R_MALLOC_FAILURE);
			return (0);
		}
		alg->algorithm = OBJ_nid2obj(nid);
		alg->parameter->type = V_ASN1_NULL;
		if (!sk_X509_ALGOR_push(md_sk, alg)) {
			X509_ALGOR_free(alg);
			return 0;
		}
	}

	if (!sk_PKCS7_SIGNER_INFO_push(signer_sk, psi))
		return 0;
	return (1);
}

int
PKCS7_add_certificate(PKCS7 *p7, X509 *x509)
{
	int i;
	STACK_OF(X509) **sk;

	i = OBJ_obj2nid(p7->type);
	switch (i) {
	case NID_pkcs7_signed:
		sk = &(p7->d.sign->cert);
		break;
	case NID_pkcs7_signedAndEnveloped:
		sk = &(p7->d.signed_and_enveloped->cert);
		break;
	default:
		PKCS7err(PKCS7_F_PKCS7_ADD_CERTIFICATE,
		    PKCS7_R_WRONG_CONTENT_TYPE);
		return (0);
	}

	if (*sk == NULL)
		*sk = sk_X509_new_null();
	if (*sk == NULL) {
		PKCS7err(PKCS7_F_PKCS7_ADD_CERTIFICATE, ERR_R_MALLOC_FAILURE);
		return 0;
	}
	CRYPTO_add(&x509->references, 1, CRYPTO_LOCK_X509);
	if (!sk_X509_push(*sk, x509)) {
		X509_free(x509);
		return 0;
	}
	return (1);
}

int
PKCS7_add_crl(PKCS7 *p7, X509_CRL *crl)
{
	int i;
	STACK_OF(X509_CRL) **sk;

	i = OBJ_obj2nid(p7->type);
	switch (i) {
	case NID_pkcs7_signed:
		sk = &(p7->d.sign->crl);
		break;
	case NID_pkcs7_signedAndEnveloped:
		sk = &(p7->d.signed_and_enveloped->crl);
		break;
	default:
		PKCS7err(PKCS7_F_PKCS7_ADD_CRL, PKCS7_R_WRONG_CONTENT_TYPE);
		return (0);
	}

	if (*sk == NULL)
		*sk = sk_X509_CRL_new_null();
	if (*sk == NULL) {
		PKCS7err(PKCS7_F_PKCS7_ADD_CRL, ERR_R_MALLOC_FAILURE);
		return 0;
	}

	CRYPTO_add(&crl->references, 1, CRYPTO_LOCK_X509_CRL);
	if (!sk_X509_CRL_push(*sk, crl)) {
		X509_CRL_free(crl);
		return 0;
	}
	return (1);
}

int
PKCS7_SIGNER_INFO_set(PKCS7_SIGNER_INFO *p7i, X509 *x509, EVP_PKEY *pkey,
    const EVP_MD *dgst)
{
	int ret;

	/* We now need to add another PKCS7_SIGNER_INFO entry */
	if (!ASN1_INTEGER_set(p7i->version, 1))
		goto err;
	if (!X509_NAME_set(&p7i->issuer_and_serial->issuer,
	    X509_get_issuer_name(x509)))
		goto err;

	/* because ASN1_INTEGER_set is used to set a 'long' we will do
	 * things the ugly way. */
	ASN1_INTEGER_free(p7i->issuer_and_serial->serial);
	if (!(p7i->issuer_and_serial->serial =
	    ASN1_STRING_dup(X509_get_serialNumber(x509))))
		goto err;

	/* lets keep the pkey around for a while */
	CRYPTO_add(&pkey->references, 1, CRYPTO_LOCK_EVP_PKEY);
	p7i->pkey = pkey;

	/* Set the algorithms */

	X509_ALGOR_set0(p7i->digest_alg, OBJ_nid2obj(EVP_MD_type(dgst)),
	    V_ASN1_NULL, NULL);

	if (pkey->ameth && pkey->ameth->pkey_ctrl) {
		ret = pkey->ameth->pkey_ctrl(pkey, ASN1_PKEY_CTRL_PKCS7_SIGN,
		    0, p7i);
		if (ret > 0)
			return 1;
		if (ret != -2) {
			PKCS7err(PKCS7_F_PKCS7_SIGNER_INFO_SET,
			    PKCS7_R_SIGNING_CTRL_FAILURE);
			return 0;
		}
	}
	PKCS7err(PKCS7_F_PKCS7_SIGNER_INFO_SET,
	    PKCS7_R_SIGNING_NOT_SUPPORTED_FOR_THIS_KEY_TYPE);
err:
	return 0;
}

PKCS7_SIGNER_INFO *
PKCS7_add_signature(PKCS7 *p7, X509 *x509, EVP_PKEY *pkey, const EVP_MD *dgst)
{
	PKCS7_SIGNER_INFO *si = NULL;

	if (dgst == NULL) {
		int def_nid;
		if (EVP_PKEY_get_default_digest_nid(pkey, &def_nid) <= 0)
			goto err;
		dgst = EVP_get_digestbynid(def_nid);
		if (dgst == NULL) {
			PKCS7err(PKCS7_F_PKCS7_ADD_SIGNATURE,
			    PKCS7_R_NO_DEFAULT_DIGEST);
			goto err;
		}
	}

	if ((si = PKCS7_SIGNER_INFO_new()) == NULL)
		goto err;
	if (!PKCS7_SIGNER_INFO_set(si, x509, pkey, dgst))
		goto err;
	if (!PKCS7_add_signer(p7, si))
		goto err;
	return (si);
err:
	if (si)
		PKCS7_SIGNER_INFO_free(si);
	return (NULL);
}

int
PKCS7_set_digest(PKCS7 *p7, const EVP_MD *md)
{
	if (PKCS7_type_is_digest(p7)) {
		if (!(p7->d.digest->md->parameter = ASN1_TYPE_new())) {
			PKCS7err(PKCS7_F_PKCS7_SET_DIGEST,
			    ERR_R_MALLOC_FAILURE);
			return 0;
		}
		p7->d.digest->md->parameter->type = V_ASN1_NULL;
		p7->d.digest->md->algorithm = OBJ_nid2obj(EVP_MD_nid(md));
		return 1;
	}

	PKCS7err(PKCS7_F_PKCS7_SET_DIGEST, PKCS7_R_WRONG_CONTENT_TYPE);
	return 1;
}

STACK_OF(PKCS7_SIGNER_INFO) *
PKCS7_get_signer_info(PKCS7 *p7)
{
	if (p7 == NULL || p7->d.ptr == NULL)
		return (NULL);
	if (PKCS7_type_is_signed(p7)) {
		return (p7->d.sign->signer_info);
	} else if (PKCS7_type_is_signedAndEnveloped(p7)) {
		return (p7->d.signed_and_enveloped->signer_info);
	} else
		return (NULL);
}

void
PKCS7_SIGNER_INFO_get0_algs(PKCS7_SIGNER_INFO *si, EVP_PKEY **pk,
    X509_ALGOR **pdig, X509_ALGOR **psig)
{
	if (pk)
		*pk = si->pkey;
	if (pdig)
		*pdig = si->digest_alg;
	if (psig)
		*psig = si->digest_enc_alg;
}

void
PKCS7_RECIP_INFO_get0_alg(PKCS7_RECIP_INFO *ri, X509_ALGOR **penc)
{
	if (penc)
		*penc = ri->key_enc_algor;
}

PKCS7_RECIP_INFO *
PKCS7_add_recipient(PKCS7 *p7, X509 *x509)
{
	PKCS7_RECIP_INFO *ri;

	if ((ri = PKCS7_RECIP_INFO_new()) == NULL)
		goto err;
	if (!PKCS7_RECIP_INFO_set(ri, x509))
		goto err;
	if (!PKCS7_add_recipient_info(p7, ri))
		goto err;
	return ri;
err:
	if (ri)
		PKCS7_RECIP_INFO_free(ri);
	return NULL;
}

int
PKCS7_add_recipient_info(PKCS7 *p7, PKCS7_RECIP_INFO *ri)
{
	int i;
	STACK_OF(PKCS7_RECIP_INFO) *sk;

	i = OBJ_obj2nid(p7->type);
	switch (i) {
	case NID_pkcs7_signedAndEnveloped:
		sk = p7->d.signed_and_enveloped->recipientinfo;
		break;
	case NID_pkcs7_enveloped:
		sk = p7->d.enveloped->recipientinfo;
		break;
	default:
		PKCS7err(PKCS7_F_PKCS7_ADD_RECIPIENT_INFO,
		    PKCS7_R_WRONG_CONTENT_TYPE);
		return (0);
	}

	if (!sk_PKCS7_RECIP_INFO_push(sk, ri))
		return 0;
	return (1);
}

int
PKCS7_RECIP_INFO_set(PKCS7_RECIP_INFO *p7i, X509 *x509)
{
	int ret;
	EVP_PKEY *pkey = NULL;
	if (!ASN1_INTEGER_set(p7i->version, 0))
		return 0;
	if (!X509_NAME_set(&p7i->issuer_and_serial->issuer,
	    X509_get_issuer_name(x509)))
		return 0;

	ASN1_INTEGER_free(p7i->issuer_and_serial->serial);
	if (!(p7i->issuer_and_serial->serial =
	    ASN1_STRING_dup(X509_get_serialNumber(x509))))
		return 0;

	pkey = X509_get_pubkey(x509);

	if (!pkey || !pkey->ameth || !pkey->ameth->pkey_ctrl) {
		PKCS7err(PKCS7_F_PKCS7_RECIP_INFO_SET,
		    PKCS7_R_ENCRYPTION_NOT_SUPPORTED_FOR_THIS_KEY_TYPE);
		goto err;
	}

	ret = pkey->ameth->pkey_ctrl(pkey, ASN1_PKEY_CTRL_PKCS7_ENCRYPT,
	    0, p7i);
	if (ret == -2) {
		PKCS7err(PKCS7_F_PKCS7_RECIP_INFO_SET,
		    PKCS7_R_ENCRYPTION_NOT_SUPPORTED_FOR_THIS_KEY_TYPE);
		goto err;
	}
	if (ret <= 0) {
		PKCS7err(PKCS7_F_PKCS7_RECIP_INFO_SET,
		    PKCS7_R_ENCRYPTION_CTRL_FAILURE);
		goto err;
	}

	EVP_PKEY_free(pkey);

	CRYPTO_add(&x509->references, 1, CRYPTO_LOCK_X509);
	p7i->cert = x509;

	return 1;

err:
	EVP_PKEY_free(pkey);
	return 0;
}

X509 *
PKCS7_cert_from_signer_info(PKCS7 *p7, PKCS7_SIGNER_INFO *si)
{
	if (PKCS7_type_is_signed(p7))
		return(X509_find_by_issuer_and_serial(p7->d.sign->cert,
		    si->issuer_and_serial->issuer,
		    si->issuer_and_serial->serial));
	else
		return (NULL);
}

int
PKCS7_set_cipher(PKCS7 *p7, const EVP_CIPHER *cipher)
{
	int i;
	PKCS7_ENC_CONTENT *ec;

	i = OBJ_obj2nid(p7->type);
	switch (i) {
	case NID_pkcs7_signedAndEnveloped:
		ec = p7->d.signed_and_enveloped->enc_data;
		break;
	case NID_pkcs7_enveloped:
		ec = p7->d.enveloped->enc_data;
		break;
	default:
		PKCS7err(PKCS7_F_PKCS7_SET_CIPHER, PKCS7_R_WRONG_CONTENT_TYPE);
		return (0);
	}

	/* Check cipher OID exists and has data in it*/
	i = EVP_CIPHER_type(cipher);
	if (i == NID_undef) {
		PKCS7err(PKCS7_F_PKCS7_SET_CIPHER,
		    PKCS7_R_CIPHER_HAS_NO_OBJECT_IDENTIFIER);
		return (0);
	}

	ec->cipher = cipher;
	return 1;
}

int
PKCS7_stream(unsigned char ***boundary, PKCS7 *p7)
{
	ASN1_OCTET_STRING *os = NULL;

	switch (OBJ_obj2nid(p7->type)) {
	case NID_pkcs7_data:
		os = p7->d.data;
		break;

	case NID_pkcs7_signedAndEnveloped:
		os = p7->d.signed_and_enveloped->enc_data->enc_data;
		if (os == NULL) {
			os = ASN1_OCTET_STRING_new();
			p7->d.signed_and_enveloped->enc_data->enc_data = os;
		}
		break;

	case NID_pkcs7_enveloped:
		os = p7->d.enveloped->enc_data->enc_data;
		if (os == NULL) {
			os = ASN1_OCTET_STRING_new();
			p7->d.enveloped->enc_data->enc_data = os;
		}
		break;

	case NID_pkcs7_signed:
		os = p7->d.sign->contents->d.data;
		break;

	default:
		os = NULL;
		break;
	}

	if (os == NULL)
		return 0;

	os->flags |= ASN1_STRING_FLAG_NDEF;
	*boundary = &os->data;

	return 1;
}


Generated by: GCOVR (Version 3.3)

Line	Branch	Exec	Source
1			/* $OpenBSD: pk7_lib.c,v 1.18 2015/09/30 18:41:06 jsing 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/err.h>
62			#include <openssl/objects.h>
63			#include <openssl/x509.h>
64
65			#include "asn1_locl.h"
66
67			long
68			PKCS7_ctrl(PKCS7 p7, int cmd, long larg, char parg)
69		12	{
70			int nid;
71			long ret;
72
73		12	nid = OBJ_obj2nid(p7->type);
74
75	✓✓✗	12	switch (cmd) {
76			case PKCS7_OP_SET_DETACHED_SIGNATURE:
77	✓✗	1	if (nid == NID_pkcs7_signed) {
78		1	ret = p7->detached = (int)larg;
79	✓✗✓✗	1	if (ret && PKCS7_type_is_data(p7->d.sign->contents)) {
80			ASN1_OCTET_STRING *os;
81		1	os = p7->d.sign->contents->d.data;
82		1	ASN1_OCTET_STRING_free(os);
83		1	p7->d.sign->contents->d.data = NULL;
84			}
85			} else {
86			PKCS7err(PKCS7_F_PKCS7_CTRL,
87			PKCS7_R_OPERATION_NOT_SUPPORTED_ON_THIS_TYPE);
88			ret = 0;
89			}
90			break;
91			case PKCS7_OP_GET_DETACHED_SIGNATURE:
92	✓✗	11	if (nid == NID_pkcs7_signed) {
93	✓✗✓✓	16	if (!p7->d.sign \|\| !p7->d.sign->contents->d.ptr)
94		5	ret = 1;
95			else
96		6	ret = 0;
97
98		11	p7->detached = ret;
99			} else {
100			PKCS7err(PKCS7_F_PKCS7_CTRL,
101			PKCS7_R_OPERATION_NOT_SUPPORTED_ON_THIS_TYPE);
102			ret = 0;
103			}
104
105			break;
106			default:
107			PKCS7err(PKCS7_F_PKCS7_CTRL, PKCS7_R_UNKNOWN_OPERATION);
108			ret = 0;
109			}
110		12	return (ret);
111			}
112
113			int
114			PKCS7_content_new(PKCS7 *p7, int type)
115		2	{
116		2	PKCS7 *ret = NULL;
117
118	✓✗	2	if ((ret = PKCS7_new()) == NULL)
119			goto err;
120	✗✓	2	if (!PKCS7_set_type(ret, type))
121			goto err;
122	✗✓	2	if (!PKCS7_set_content(p7, ret))
123			goto err;
124
125		2	return (1);
126			err:
127			if (ret != NULL)
128			PKCS7_free(ret);
129			return (0);
130			}
131
132			int
133			PKCS7_set_content(PKCS7 p7, PKCS7 p7_data)
134		2	{
135			int i;
136
137		2	i = OBJ_obj2nid(p7->type);
138	✓✗✗	2	switch (i) {
139			case NID_pkcs7_signed:
140	✓✗	2	if (p7->d.sign->contents != NULL)
141		2	PKCS7_free(p7->d.sign->contents);
142		2	p7->d.sign->contents = p7_data;
143		2	break;
144			case NID_pkcs7_digest:
145			if (p7->d.digest->contents != NULL)
146			PKCS7_free(p7->d.digest->contents);
147			p7->d.digest->contents = p7_data;
148			break;
149			case NID_pkcs7_data:
150			case NID_pkcs7_enveloped:
151			case NID_pkcs7_signedAndEnveloped:
152			case NID_pkcs7_encrypted:
153			default:
154			PKCS7err(PKCS7_F_PKCS7_SET_CONTENT,
155			PKCS7_R_UNSUPPORTED_CONTENT_TYPE);
156			goto err;
157			}
158		2	return (1);
159			err:
160			return (0);
161			}
162
163			int
164			PKCS7_set_type(PKCS7 *p7, int type)
165		5	{
166			ASN1_OBJECT *obj;
167
168			/PKCS7_content_free(p7);/
169		5	obj=OBJ_nid2obj(type); /* will not fail */
170
171	✓✓✗✓ ✗✗✗	5	switch (type) {
172			case NID_pkcs7_signed:
173		2	p7->type = obj;
174	✓✗	2	if ((p7->d.sign = PKCS7_SIGNED_new()) == NULL)
175			goto err;
176	✗✓	2	if (!ASN1_INTEGER_set(p7->d.sign->version, 1)) {
177			PKCS7_SIGNED_free(p7->d.sign);
178			p7->d.sign = NULL;
179			goto err;
180			}
181			break;
182			case NID_pkcs7_data:
183		2	p7->type = obj;
184	✗✓	2	if ((p7->d.data = ASN1_OCTET_STRING_new()) == NULL)
185			goto err;
186			break;
187			case NID_pkcs7_signedAndEnveloped:
188			p7->type = obj;
189			if ((p7->d.signed_and_enveloped =
190			PKCS7_SIGN_ENVELOPE_new()) == NULL)
191			goto err;
192			ASN1_INTEGER_set(p7->d.signed_and_enveloped->version, 1);
193			if (!ASN1_INTEGER_set(p7->d.signed_and_enveloped->version, 1))
194			goto err;
195			p7->d.signed_and_enveloped->enc_data->content_type =
196			OBJ_nid2obj(NID_pkcs7_data);
197			break;
198			case NID_pkcs7_enveloped:
199		1	p7->type = obj;
200	✗✓	1	if ((p7->d.enveloped = PKCS7_ENVELOPE_new()) == NULL)
201			goto err;
202	✗✓	1	if (!ASN1_INTEGER_set(p7->d.enveloped->version, 0))
203			goto err;
204		1	p7->d.enveloped->enc_data->content_type =
205			OBJ_nid2obj(NID_pkcs7_data);
206		1	break;
207			case NID_pkcs7_encrypted:
208			p7->type = obj;
209			if ((p7->d.encrypted = PKCS7_ENCRYPT_new()) == NULL)
210			goto err;
211			if (!ASN1_INTEGER_set(p7->d.encrypted->version, 0))
212			goto err;
213			p7->d.encrypted->enc_data->content_type =
214			OBJ_nid2obj(NID_pkcs7_data);
215			break;
216
217			case NID_pkcs7_digest:
218			p7->type = obj;
219			if ((p7->d.digest = PKCS7_DIGEST_new()) == NULL)
220			goto err;
221			if (!ASN1_INTEGER_set(p7->d.digest->version, 0))
222			goto err;
223			break;
224			default:
225			PKCS7err(PKCS7_F_PKCS7_SET_TYPE,
226			PKCS7_R_UNSUPPORTED_CONTENT_TYPE);
227			goto err;
228			}
229		5	return (1);
230			err:
231			return (0);
232			}
233
234			int
235			PKCS7_set0_type_other(PKCS7 p7, int type, ASN1_TYPE other)
236			{
237			p7->type = OBJ_nid2obj(type);
238			p7->d.other = other;
239			return 1;
240			}
241
242			int
243			PKCS7_add_signer(PKCS7 p7, PKCS7_SIGNER_INFO psi)
244		2	{
245			int i, j, nid;
246			X509_ALGOR *alg;
247			STACK_OF(PKCS7_SIGNER_INFO) *signer_sk;
248			STACK_OF(X509_ALGOR) *md_sk;
249
250		2	i = OBJ_obj2nid(p7->type);
251	✓✗✗	2	switch (i) {
252			case NID_pkcs7_signed:
253		2	signer_sk = p7->d.sign->signer_info;
254		2	md_sk = p7->d.sign->md_algs;
255		2	break;
256			case NID_pkcs7_signedAndEnveloped:
257			signer_sk = p7->d.signed_and_enveloped->signer_info;
258			md_sk = p7->d.signed_and_enveloped->md_algs;
259			break;
260			default:
261			PKCS7err(PKCS7_F_PKCS7_ADD_SIGNER, PKCS7_R_WRONG_CONTENT_TYPE);
262			return (0);
263			}
264
265		2	nid = OBJ_obj2nid(psi->digest_alg->algorithm);
266
267			/* If the digest is not currently listed, add it */
268		2	j = 0;
269	✗✓	2	for (i = 0; i < sk_X509_ALGOR_num(md_sk); i++) {
270			alg = sk_X509_ALGOR_value(md_sk, i);
271			if (OBJ_obj2nid(alg->algorithm) == nid) {
272			j = 1;
273			break;
274			}
275			}
276	✓✗	2	if (!j) /* we need to add another algorithm */
277			{
278	✓✗✗✓	2	if (!(alg = X509_ALGOR_new()) \|\|
279			!(alg->parameter = ASN1_TYPE_new())) {
280			X509_ALGOR_free(alg);
281			PKCS7err(PKCS7_F_PKCS7_ADD_SIGNER,
282			ERR_R_MALLOC_FAILURE);
283			return (0);
284			}
285		2	alg->algorithm = OBJ_nid2obj(nid);
286		2	alg->parameter->type = V_ASN1_NULL;
287	✗✓	2	if (!sk_X509_ALGOR_push(md_sk, alg)) {
288			X509_ALGOR_free(alg);
289			return 0;
290			}
291			}
292
293	✗✓	2	if (!sk_PKCS7_SIGNER_INFO_push(signer_sk, psi))
294			return 0;
295		2	return (1);
296			}
297
298			int
299			PKCS7_add_certificate(PKCS7 p7, X509 x509)
300		3	{
301			int i;
302			STACK_OF(X509) **sk;
303
304		3	i = OBJ_obj2nid(p7->type);
305	✓✗✗	3	switch (i) {
306			case NID_pkcs7_signed:
307		3	sk = &(p7->d.sign->cert);
308		3	break;
309			case NID_pkcs7_signedAndEnveloped:
310			sk = &(p7->d.signed_and_enveloped->cert);
311			break;
312			default:
313			PKCS7err(PKCS7_F_PKCS7_ADD_CERTIFICATE,
314			PKCS7_R_WRONG_CONTENT_TYPE);
315			return (0);
316			}
317
318	✓✓	3	if (*sk == NULL)
319		2	*sk = sk_X509_new_null();
320	✗✓	3	if (*sk == NULL) {
321			PKCS7err(PKCS7_F_PKCS7_ADD_CERTIFICATE, ERR_R_MALLOC_FAILURE);
322			return 0;
323			}
324		3	CRYPTO_add(&x509->references, 1, CRYPTO_LOCK_X509);
325	✗✓	3	if (!sk_X509_push(*sk, x509)) {
326			X509_free(x509);
327			return 0;
328			}
329		3	return (1);
330			}
331
332			int
333			PKCS7_add_crl(PKCS7 p7, X509_CRL crl)
334			{
335			int i;
336			STACK_OF(X509_CRL) **sk;
337
338			i = OBJ_obj2nid(p7->type);
339			switch (i) {
340			case NID_pkcs7_signed:
341			sk = &(p7->d.sign->crl);
342			break;
343			case NID_pkcs7_signedAndEnveloped:
344			sk = &(p7->d.signed_and_enveloped->crl);
345			break;
346			default:
347			PKCS7err(PKCS7_F_PKCS7_ADD_CRL, PKCS7_R_WRONG_CONTENT_TYPE);
348			return (0);
349			}
350
351			if (*sk == NULL)
352			*sk = sk_X509_CRL_new_null();
353			if (*sk == NULL) {
354			PKCS7err(PKCS7_F_PKCS7_ADD_CRL, ERR_R_MALLOC_FAILURE);
355			return 0;
356			}
357
358			CRYPTO_add(&crl->references, 1, CRYPTO_LOCK_X509_CRL);
359			if (!sk_X509_CRL_push(*sk, crl)) {
360			X509_CRL_free(crl);
361			return 0;
362			}
363			return (1);
364			}
365
366			int
367			PKCS7_SIGNER_INFO_set(PKCS7_SIGNER_INFO p7i, X509 x509, EVP_PKEY *pkey,
368			const EVP_MD *dgst)
369		2	{
370			int ret;
371
372			/* We now need to add another PKCS7_SIGNER_INFO entry */
373	✗✓	2	if (!ASN1_INTEGER_set(p7i->version, 1))
374			goto err;
375	✗✓	2	if (!X509_NAME_set(&p7i->issuer_and_serial->issuer,
376			X509_get_issuer_name(x509)))
377			goto err;
378
379			/* because ASN1_INTEGER_set is used to set a 'long' we will do
380			* things the ugly way. */
381		2	ASN1_INTEGER_free(p7i->issuer_and_serial->serial);
382	✗✓	2	if (!(p7i->issuer_and_serial->serial =
383			ASN1_STRING_dup(X509_get_serialNumber(x509))))
384			goto err;
385
386			/* lets keep the pkey around for a while */
387		2	CRYPTO_add(&pkey->references, 1, CRYPTO_LOCK_EVP_PKEY);
388		2	p7i->pkey = pkey;
389
390			/* Set the algorithms */
391
392		2	X509_ALGOR_set0(p7i->digest_alg, OBJ_nid2obj(EVP_MD_type(dgst)),
393			V_ASN1_NULL, NULL);
394
395	✓✗✓✗	2	if (pkey->ameth && pkey->ameth->pkey_ctrl) {
396		2	ret = pkey->ameth->pkey_ctrl(pkey, ASN1_PKEY_CTRL_PKCS7_SIGN,
397			0, p7i);
398	✓✗	2	if (ret > 0)
399		2	return 1;
400			if (ret != -2) {
401			PKCS7err(PKCS7_F_PKCS7_SIGNER_INFO_SET,
402			PKCS7_R_SIGNING_CTRL_FAILURE);
403			return 0;
404			}
405			}
406			PKCS7err(PKCS7_F_PKCS7_SIGNER_INFO_SET,
407			PKCS7_R_SIGNING_NOT_SUPPORTED_FOR_THIS_KEY_TYPE);
408			err:
409			return 0;
410			}
411
412			PKCS7_SIGNER_INFO *
413			PKCS7_add_signature(PKCS7 p7, X509 x509, EVP_PKEY pkey, const EVP_MD dgst)
414		2	{
415		2	PKCS7_SIGNER_INFO *si = NULL;
416
417	✓✗	2	if (dgst == NULL) {
418			int def_nid;
419	✓✗	2	if (EVP_PKEY_get_default_digest_nid(pkey, &def_nid) <= 0)
420			goto err;
421		2	dgst = EVP_get_digestbynid(def_nid);
422	✗✓	2	if (dgst == NULL) {
423			PKCS7err(PKCS7_F_PKCS7_ADD_SIGNATURE,
424			PKCS7_R_NO_DEFAULT_DIGEST);
425			goto err;
426			}
427			}
428
429	✗✓	2	if ((si = PKCS7_SIGNER_INFO_new()) == NULL)
430			goto err;
431	✗✓	2	if (!PKCS7_SIGNER_INFO_set(si, x509, pkey, dgst))
432			goto err;
433	✗✓	2	if (!PKCS7_add_signer(p7, si))
434			goto err;
435		2	return (si);
436			err:
437			if (si)
438			PKCS7_SIGNER_INFO_free(si);
439			return (NULL);
440			}
441
442			int
443			PKCS7_set_digest(PKCS7 p7, const EVP_MD md)
444			{
445			if (PKCS7_type_is_digest(p7)) {
446			if (!(p7->d.digest->md->parameter = ASN1_TYPE_new())) {
447			PKCS7err(PKCS7_F_PKCS7_SET_DIGEST,
448			ERR_R_MALLOC_FAILURE);
449			return 0;
450			}
451			p7->d.digest->md->parameter->type = V_ASN1_NULL;
452			p7->d.digest->md->algorithm = OBJ_nid2obj(EVP_MD_nid(md));
453			return 1;
454			}
455
456			PKCS7err(PKCS7_F_PKCS7_SET_DIGEST, PKCS7_R_WRONG_CONTENT_TYPE);
457			return 1;
458			}
459
460			STACK_OF(PKCS7_SIGNER_INFO) *
461			PKCS7_get_signer_info(PKCS7 *p7)
462		4	{
463	✓✗✗✓	4	if (p7 == NULL \|\| p7->d.ptr == NULL)
464			return (NULL);
465	✓✗	4	if (PKCS7_type_is_signed(p7)) {
466		4	return (p7->d.sign->signer_info);
467			} else if (PKCS7_type_is_signedAndEnveloped(p7)) {
468			return (p7->d.signed_and_enveloped->signer_info);
469			} else
470			return (NULL);
471			}
472
473			void
474			PKCS7_SIGNER_INFO_get0_algs(PKCS7_SIGNER_INFO si, EVP_PKEY *pk,
475			X509_ALGOR pdig, X509_ALGOR psig)
476		2	{
477	✗✓	2	if (pk)
478			*pk = si->pkey;
479	✗✓	2	if (pdig)
480			*pdig = si->digest_alg;
481	✓✗	2	if (psig)
482		2	*psig = si->digest_enc_alg;
483		2	}
484
485			void
486			PKCS7_RECIP_INFO_get0_alg(PKCS7_RECIP_INFO ri, X509_ALGOR *penc)
487		1	{
488	✓✗	1	if (penc)
489		1	*penc = ri->key_enc_algor;
490		1	}
491
492			PKCS7_RECIP_INFO *
493			PKCS7_add_recipient(PKCS7 p7, X509 x509)
494		1	{
495			PKCS7_RECIP_INFO *ri;
496
497	✓✗	1	if ((ri = PKCS7_RECIP_INFO_new()) == NULL)
498			goto err;
499	✗✓	1	if (!PKCS7_RECIP_INFO_set(ri, x509))
500			goto err;
501	✗✓	1	if (!PKCS7_add_recipient_info(p7, ri))
502			goto err;
503		1	return ri;
504			err:
505			if (ri)
506			PKCS7_RECIP_INFO_free(ri);
507			return NULL;
508			}
509
510			int
511			PKCS7_add_recipient_info(PKCS7 p7, PKCS7_RECIP_INFO ri)
512		1	{
513			int i;
514			STACK_OF(PKCS7_RECIP_INFO) *sk;
515
516		1	i = OBJ_obj2nid(p7->type);
517	✗✓✗	1	switch (i) {
518			case NID_pkcs7_signedAndEnveloped:
519			sk = p7->d.signed_and_enveloped->recipientinfo;
520			break;
521			case NID_pkcs7_enveloped:
522		1	sk = p7->d.enveloped->recipientinfo;
523		1	break;
524			default:
525			PKCS7err(PKCS7_F_PKCS7_ADD_RECIPIENT_INFO,
526			PKCS7_R_WRONG_CONTENT_TYPE);
527			return (0);
528			}
529
530	✗✓	1	if (!sk_PKCS7_RECIP_INFO_push(sk, ri))
531			return 0;
532		1	return (1);
533			}
534
535			int
536			PKCS7_RECIP_INFO_set(PKCS7_RECIP_INFO p7i, X509 x509)
537		1	{
538			int ret;
539		1	EVP_PKEY *pkey = NULL;
540	✗✓	1	if (!ASN1_INTEGER_set(p7i->version, 0))
541			return 0;
542	✗✓	1	if (!X509_NAME_set(&p7i->issuer_and_serial->issuer,
543			X509_get_issuer_name(x509)))
544			return 0;
545
546		1	ASN1_INTEGER_free(p7i->issuer_and_serial->serial);
547	✗✓	1	if (!(p7i->issuer_and_serial->serial =
548			ASN1_STRING_dup(X509_get_serialNumber(x509))))
549			return 0;
550
551		1	pkey = X509_get_pubkey(x509);
552
553	✓✗✓✗ ✗✓	1	if (!pkey \|\| !pkey->ameth \|\| !pkey->ameth->pkey_ctrl) {
554			PKCS7err(PKCS7_F_PKCS7_RECIP_INFO_SET,
555			PKCS7_R_ENCRYPTION_NOT_SUPPORTED_FOR_THIS_KEY_TYPE);
556			goto err;
557			}
558
559		1	ret = pkey->ameth->pkey_ctrl(pkey, ASN1_PKEY_CTRL_PKCS7_ENCRYPT,
560			0, p7i);
561	✗✓	1	if (ret == -2) {
562			PKCS7err(PKCS7_F_PKCS7_RECIP_INFO_SET,
563			PKCS7_R_ENCRYPTION_NOT_SUPPORTED_FOR_THIS_KEY_TYPE);
564			goto err;
565			}
566	✗✓	1	if (ret <= 0) {
567			PKCS7err(PKCS7_F_PKCS7_RECIP_INFO_SET,
568			PKCS7_R_ENCRYPTION_CTRL_FAILURE);
569			goto err;
570			}
571
572		1	EVP_PKEY_free(pkey);
573
574		1	CRYPTO_add(&x509->references, 1, CRYPTO_LOCK_X509);
575		1	p7i->cert = x509;
576
577		1	return 1;
578
579			err:
580			EVP_PKEY_free(pkey);
581			return 0;
582			}
583
584			X509 *
585			PKCS7_cert_from_signer_info(PKCS7 p7, PKCS7_SIGNER_INFO si)
586			{
587			if (PKCS7_type_is_signed(p7))
588			return(X509_find_by_issuer_and_serial(p7->d.sign->cert,
589			si->issuer_and_serial->issuer,
590			si->issuer_and_serial->serial));
591			else
592			return (NULL);
593			}
594
595			int
596			PKCS7_set_cipher(PKCS7 p7, const EVP_CIPHER cipher)
597		1	{
598			int i;
599			PKCS7_ENC_CONTENT *ec;
600
601		1	i = OBJ_obj2nid(p7->type);
602	✗✓✗	1	switch (i) {
603			case NID_pkcs7_signedAndEnveloped:
604			ec = p7->d.signed_and_enveloped->enc_data;
605			break;
606			case NID_pkcs7_enveloped:
607		1	ec = p7->d.enveloped->enc_data;
608		1	break;
609			default:
610			PKCS7err(PKCS7_F_PKCS7_SET_CIPHER, PKCS7_R_WRONG_CONTENT_TYPE);
611			return (0);
612			}
613
614			/* Check cipher OID exists and has data in it*/
615		1	i = EVP_CIPHER_type(cipher);
616	✗✓	1	if (i == NID_undef) {
617			PKCS7err(PKCS7_F_PKCS7_SET_CIPHER,
618			PKCS7_R_CIPHER_HAS_NO_OBJECT_IDENTIFIER);
619			return (0);
620			}
621
622		1	ec->cipher = cipher;
623		1	return 1;
624			}
625
626			int
627			PKCS7_stream(unsigned char **boundary, PKCS7 p7)
628			{
629			ASN1_OCTET_STRING *os = NULL;
630
631			switch (OBJ_obj2nid(p7->type)) {
632			case NID_pkcs7_data:
633			os = p7->d.data;
634			break;
635
636			case NID_pkcs7_signedAndEnveloped:
637			os = p7->d.signed_and_enveloped->enc_data->enc_data;
638			if (os == NULL) {
639			os = ASN1_OCTET_STRING_new();
640			p7->d.signed_and_enveloped->enc_data->enc_data = os;
641			}
642			break;
643
644			case NID_pkcs7_enveloped:
645			os = p7->d.enveloped->enc_data->enc_data;
646			if (os == NULL) {
647			os = ASN1_OCTET_STRING_new();
648			p7->d.enveloped->enc_data->enc_data = os;
649			}
650			break;
651
652			case NID_pkcs7_signed:
653			os = p7->d.sign->contents->d.data;
654			break;
655
656			default:
657			os = NULL;
658			break;
659			}
660
661			if (os == NULL)
662			return 0;
663
664			os->flags \|= ASN1_STRING_FLAG_NDEF;
665			*boundary = &os->data;
666
667			return 1;
668			}