Head

GCC Code Coverage Report

Directory:	./		Exec	Total	Coverage
File:	lib/libcrypto/pkcs7/pk7_lib.c	Lines:	152	299	50.8 %
Date:	2017-11-13	Branches:	74	192	38.5 %


/* $OpenBSD: pk7_lib.c,v 1.19 2017/01/29 17:49:23 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/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 {
			PKCS7error(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 {
			PKCS7error(PKCS7_R_OPERATION_NOT_SUPPORTED_ON_THIS_TYPE);
			ret = 0;
		}

		break;
	default:
		PKCS7error(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:
		PKCS7error(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:
		PKCS7error(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:
		PKCS7error(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);
			PKCS7error(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:
		PKCS7error(PKCS7_R_WRONG_CONTENT_TYPE);
		return (0);
	}

	if (*sk == NULL)
		*sk = sk_X509_new_null();
	if (*sk == NULL) {
		PKCS7error(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:
		PKCS7error(PKCS7_R_WRONG_CONTENT_TYPE);
		return (0);
	}

	if (*sk == NULL)
		*sk = sk_X509_CRL_new_null();
	if (*sk == NULL) {
		PKCS7error(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) {
			PKCS7error(PKCS7_R_SIGNING_CTRL_FAILURE);
			return 0;
		}
	}
	PKCS7error(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) {
			PKCS7error(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())) {
			PKCS7error(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;
	}

	PKCS7error(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:
		PKCS7error(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) {
		PKCS7error(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) {
		PKCS7error(PKCS7_R_ENCRYPTION_NOT_SUPPORTED_FOR_THIS_KEY_TYPE);
		goto err;
	}
	if (ret <= 0) {
		PKCS7error(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:
		PKCS7error(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) {
		PKCS7error(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 1.19 2017/01/29 17:49:23 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/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			{
70			int nid;
71			long ret;
72
73		116	nid = OBJ_obj2nid(p7->type);
74
75	✓✓✗	58	switch (cmd) {
76			case PKCS7_OP_SET_DETACHED_SIGNATURE:
77	✓✗	5	if (nid == NID_pkcs7_signed) {
78		5	ret = p7->detached = (int)larg;
79	✓✗✓✗	10	if (ret && PKCS7_type_is_data(p7->d.sign->contents)) {
80			ASN1_OCTET_STRING *os;
81		5	os = p7->d.sign->contents->d.data;
82		5	ASN1_OCTET_STRING_free(os);
83		5	p7->d.sign->contents->d.data = NULL;
84		5	}
85			} else {
86			PKCS7error(PKCS7_R_OPERATION_NOT_SUPPORTED_ON_THIS_TYPE);
87			ret = 0;
88			}
89			break;
90			case PKCS7_OP_GET_DETACHED_SIGNATURE:
91	✓✗	53	if (nid == NID_pkcs7_signed) {
92	✓✗✓✓	106	if (!p7->d.sign \|\| !p7->d.sign->contents->d.ptr)
93		23	ret = 1;
94			else
95			ret = 0;
96
97		53	p7->detached = ret;
98		53	} else {
99			PKCS7error(PKCS7_R_OPERATION_NOT_SUPPORTED_ON_THIS_TYPE);
100			ret = 0;
101			}
102
103			break;
104			default:
105			PKCS7error(PKCS7_R_UNKNOWN_OPERATION);
106			ret = 0;
107			}
108		58	return (ret);
109			}
110
111			int
112			PKCS7_content_new(PKCS7 *p7, int type)
113			{
114			PKCS7 *ret = NULL;
115
116	✓✗	16	if ((ret = PKCS7_new()) == NULL)
117			goto err;
118	✓✗	8	if (!PKCS7_set_type(ret, type))
119			goto err;
120	✓✗	8	if (!PKCS7_set_content(p7, ret))
121			goto err;
122
123		8	return (1);
124			err:
125			if (ret != NULL)
126			PKCS7_free(ret);
127			return (0);
128		8	}
129
130			int
131			PKCS7_set_content(PKCS7 p7, PKCS7 p7_data)
132			{
133			int i;
134
135		20	i = OBJ_obj2nid(p7->type);
136	✓✗✗	10	switch (i) {
137			case NID_pkcs7_signed:
138	✓✗	10	if (p7->d.sign->contents != NULL)
139		10	PKCS7_free(p7->d.sign->contents);
140		10	p7->d.sign->contents = p7_data;
141		10	break;
142			case NID_pkcs7_digest:
143			if (p7->d.digest->contents != NULL)
144			PKCS7_free(p7->d.digest->contents);
145			p7->d.digest->contents = p7_data;
146			break;
147			case NID_pkcs7_data:
148			case NID_pkcs7_enveloped:
149			case NID_pkcs7_signedAndEnveloped:
150			case NID_pkcs7_encrypted:
151			default:
152			PKCS7error(PKCS7_R_UNSUPPORTED_CONTENT_TYPE);
153			goto err;
154			}
155		10	return (1);
156			err:
157			return (0);
158		10	}
159
160			int
161			PKCS7_set_type(PKCS7 *p7, int type)
162			{
163			ASN1_OBJECT *obj;
164
165			/PKCS7_content_free(p7);/
166		46	obj=OBJ_nid2obj(type); /* will not fail */
167
168	✓✓✗✓ ✓✗✗	23	switch (type) {
169			case NID_pkcs7_signed:
170		10	p7->type = obj;
171	✓✗	10	if ((p7->d.sign = PKCS7_SIGNED_new()) == NULL)
172			goto err;
173	✗✓	10	if (!ASN1_INTEGER_set(p7->d.sign->version, 1)) {
174			PKCS7_SIGNED_free(p7->d.sign);
175			p7->d.sign = NULL;
176			goto err;
177			}
178			break;
179			case NID_pkcs7_data:
180		8	p7->type = obj;
181	✓✗	8	if ((p7->d.data = ASN1_OCTET_STRING_new()) == NULL)
182			goto err;
183			break;
184			case NID_pkcs7_signedAndEnveloped:
185			p7->type = obj;
186			if ((p7->d.signed_and_enveloped =
187			PKCS7_SIGN_ENVELOPE_new()) == NULL)
188			goto err;
189			ASN1_INTEGER_set(p7->d.signed_and_enveloped->version, 1);
190			if (!ASN1_INTEGER_set(p7->d.signed_and_enveloped->version, 1))
191			goto err;
192			p7->d.signed_and_enveloped->enc_data->content_type =
193			OBJ_nid2obj(NID_pkcs7_data);
194			break;
195			case NID_pkcs7_enveloped:
196		3	p7->type = obj;
197	✓✗	3	if ((p7->d.enveloped = PKCS7_ENVELOPE_new()) == NULL)
198			goto err;
199	✓✗	3	if (!ASN1_INTEGER_set(p7->d.enveloped->version, 0))
200			goto err;
201		3	p7->d.enveloped->enc_data->content_type =
202		3	OBJ_nid2obj(NID_pkcs7_data);
203		3	break;
204			case NID_pkcs7_encrypted:
205		2	p7->type = obj;
206	✓✗	2	if ((p7->d.encrypted = PKCS7_ENCRYPT_new()) == NULL)
207			goto err;
208	✓✗	2	if (!ASN1_INTEGER_set(p7->d.encrypted->version, 0))
209			goto err;
210		2	p7->d.encrypted->enc_data->content_type =
211		2	OBJ_nid2obj(NID_pkcs7_data);
212		2	break;
213
214			case NID_pkcs7_digest:
215			p7->type = obj;
216			if ((p7->d.digest = PKCS7_DIGEST_new()) == NULL)
217			goto err;
218			if (!ASN1_INTEGER_set(p7->d.digest->version, 0))
219			goto err;
220			break;
221			default:
222			PKCS7error(PKCS7_R_UNSUPPORTED_CONTENT_TYPE);
223			goto err;
224			}
225		23	return (1);
226			err:
227			return (0);
228		23	}
229
230			int
231			PKCS7_set0_type_other(PKCS7 p7, int type, ASN1_TYPE other)
232			{
233			p7->type = OBJ_nid2obj(type);
234			p7->d.other = other;
235			return 1;
236			}
237
238			int
239			PKCS7_add_signer(PKCS7 p7, PKCS7_SIGNER_INFO psi)
240			{
241			int i, j, nid;
242			X509_ALGOR *alg;
243			STACK_OF(PKCS7_SIGNER_INFO) *signer_sk;
244			STACK_OF(X509_ALGOR) *md_sk;
245
246		20	i = OBJ_obj2nid(p7->type);
247	✓✗✗	10	switch (i) {
248			case NID_pkcs7_signed:
249		10	signer_sk = p7->d.sign->signer_info;
250		10	md_sk = p7->d.sign->md_algs;
251		10	break;
252			case NID_pkcs7_signedAndEnveloped:
253			signer_sk = p7->d.signed_and_enveloped->signer_info;
254			md_sk = p7->d.signed_and_enveloped->md_algs;
255			break;
256			default:
257			PKCS7error(PKCS7_R_WRONG_CONTENT_TYPE);
258			return (0);
259			}
260
261		10	nid = OBJ_obj2nid(psi->digest_alg->algorithm);
262
263			/* If the digest is not currently listed, add it */
264			j = 0;
265	✗✓	20	for (i = 0; i < sk_X509_ALGOR_num(md_sk); i++) {
266			alg = sk_X509_ALGOR_value(md_sk, i);
267			if (OBJ_obj2nid(alg->algorithm) == nid) {
268			j = 1;
269			break;
270			}
271			}
272	✓✗	10	if (!j) /* we need to add another algorithm */
273			{
274	✓✗✗✓	20	if (!(alg = X509_ALGOR_new()) \|\|
275		10	!(alg->parameter = ASN1_TYPE_new())) {
276			X509_ALGOR_free(alg);
277			PKCS7error(ERR_R_MALLOC_FAILURE);
278			return (0);
279			}
280		10	alg->algorithm = OBJ_nid2obj(nid);
281		10	alg->parameter->type = V_ASN1_NULL;
282	✗✓	10	if (!sk_X509_ALGOR_push(md_sk, alg)) {
283			X509_ALGOR_free(alg);
284			return 0;
285			}
286			}
287
288	✗✓	10	if (!sk_PKCS7_SIGNER_INFO_push(signer_sk, psi))
289			return 0;
290		10	return (1);
291		10	}
292
293			int
294			PKCS7_add_certificate(PKCS7 p7, X509 x509)
295			{
296			int i;
297			STACK_OF(X509) **sk;
298
299		22	i = OBJ_obj2nid(p7->type);
300	✓✗✗	11	switch (i) {
301			case NID_pkcs7_signed:
302		11	sk = &(p7->d.sign->cert);
303		11	break;
304			case NID_pkcs7_signedAndEnveloped:
305			sk = &(p7->d.signed_and_enveloped->cert);
306			break;
307			default:
308			PKCS7error(PKCS7_R_WRONG_CONTENT_TYPE);
309			return (0);
310			}
311
312	✓✓	11	if (*sk == NULL)
313		8	*sk = sk_X509_new_null();
314	✗✓	11	if (*sk == NULL) {
315			PKCS7error(ERR_R_MALLOC_FAILURE);
316			return 0;
317			}
318		11	CRYPTO_add(&x509->references, 1, CRYPTO_LOCK_X509);
319	✗✓	11	if (!sk_X509_push(*sk, x509)) {
320			X509_free(x509);
321			return 0;
322			}
323		11	return (1);
324		11	}
325
326			int
327			PKCS7_add_crl(PKCS7 p7, X509_CRL crl)
328			{
329			int i;
330			STACK_OF(X509_CRL) **sk;
331
332			i = OBJ_obj2nid(p7->type);
333			switch (i) {
334			case NID_pkcs7_signed:
335			sk = &(p7->d.sign->crl);
336			break;
337			case NID_pkcs7_signedAndEnveloped:
338			sk = &(p7->d.signed_and_enveloped->crl);
339			break;
340			default:
341			PKCS7error(PKCS7_R_WRONG_CONTENT_TYPE);
342			return (0);
343			}
344
345			if (*sk == NULL)
346			*sk = sk_X509_CRL_new_null();
347			if (*sk == NULL) {
348			PKCS7error(ERR_R_MALLOC_FAILURE);
349			return 0;
350			}
351
352			CRYPTO_add(&crl->references, 1, CRYPTO_LOCK_X509_CRL);
353			if (!sk_X509_CRL_push(*sk, crl)) {
354			X509_CRL_free(crl);
355			return 0;
356			}
357			return (1);
358			}
359
360			int
361			PKCS7_SIGNER_INFO_set(PKCS7_SIGNER_INFO p7i, X509 x509, EVP_PKEY *pkey,
362			const EVP_MD *dgst)
363			{
364			int ret;
365
366			/* We now need to add another PKCS7_SIGNER_INFO entry */
367	✓✗	20	if (!ASN1_INTEGER_set(p7i->version, 1))
368			goto err;
369	✓✗	20	if (!X509_NAME_set(&p7i->issuer_and_serial->issuer,
370		10	X509_get_issuer_name(x509)))
371			goto err;
372
373			/* because ASN1_INTEGER_set is used to set a 'long' we will do
374			* things the ugly way. */
375		10	ASN1_INTEGER_free(p7i->issuer_and_serial->serial);
376	✓✗	10	if (!(p7i->issuer_and_serial->serial =
377		10	ASN1_STRING_dup(X509_get_serialNumber(x509))))
378			goto err;
379
380			/* lets keep the pkey around for a while */
381		10	CRYPTO_add(&pkey->references, 1, CRYPTO_LOCK_EVP_PKEY);
382		10	p7i->pkey = pkey;
383
384			/* Set the algorithms */
385
386		10	X509_ALGOR_set0(p7i->digest_alg, OBJ_nid2obj(EVP_MD_type(dgst)),
387			V_ASN1_NULL, NULL);
388
389	✓✗✓✗	20	if (pkey->ameth && pkey->ameth->pkey_ctrl) {
390		10	ret = pkey->ameth->pkey_ctrl(pkey, ASN1_PKEY_CTRL_PKCS7_SIGN,
391		10	0, p7i);
392	✓✗	10	if (ret > 0)
393		10	return 1;
394			if (ret != -2) {
395			PKCS7error(PKCS7_R_SIGNING_CTRL_FAILURE);
396			return 0;
397			}
398			}
399			PKCS7error(PKCS7_R_SIGNING_NOT_SUPPORTED_FOR_THIS_KEY_TYPE);
400			err:
401			return 0;
402		10	}
403
404			PKCS7_SIGNER_INFO *
405			PKCS7_add_signature(PKCS7 p7, X509 x509, EVP_PKEY pkey, const EVP_MD dgst)
406			{
407			PKCS7_SIGNER_INFO *si = NULL;
408
409	✓✓	20	if (dgst == NULL) {
410		8	int def_nid;
411	✗✓	8	if (EVP_PKEY_get_default_digest_nid(pkey, &def_nid) <= 0)
412			goto err;
413		8	dgst = EVP_get_digestbynid(def_nid);
414	✗✓	8	if (dgst == NULL) {
415			PKCS7error(PKCS7_R_NO_DEFAULT_DIGEST);
416			goto err;
417			}
418	✓✗✓	24	}
419
420	✓✗	10	if ((si = PKCS7_SIGNER_INFO_new()) == NULL)
421			goto err;
422	✓✗	10	if (!PKCS7_SIGNER_INFO_set(si, x509, pkey, dgst))
423			goto err;
424	✓✗	10	if (!PKCS7_add_signer(p7, si))
425			goto err;
426		10	return (si);
427			err:
428			if (si)
429			PKCS7_SIGNER_INFO_free(si);
430			return (NULL);
431		10	}
432
433			int
434			PKCS7_set_digest(PKCS7 p7, const EVP_MD md)
435			{
436			if (PKCS7_type_is_digest(p7)) {
437			if (!(p7->d.digest->md->parameter = ASN1_TYPE_new())) {
438			PKCS7error(ERR_R_MALLOC_FAILURE);
439			return 0;
440			}
441			p7->d.digest->md->parameter->type = V_ASN1_NULL;
442			p7->d.digest->md->algorithm = OBJ_nid2obj(EVP_MD_nid(md));
443			return 1;
444			}
445
446			PKCS7error(PKCS7_R_WRONG_CONTENT_TYPE);
447			return 1;
448			}
449
450			STACK_OF(PKCS7_SIGNER_INFO) *
451			PKCS7_get_signer_info(PKCS7 *p7)
452			{
453	✓✗✗✓	66	if (p7 == NULL \|\| p7->d.ptr == NULL)
454			return (NULL);
455	✓✗	22	if (PKCS7_type_is_signed(p7)) {
456		22	return (p7->d.sign->signer_info);
457			} else if (PKCS7_type_is_signedAndEnveloped(p7)) {
458			return (p7->d.signed_and_enveloped->signer_info);
459			} else
460			return (NULL);
461		22	}
462
463			void
464			PKCS7_SIGNER_INFO_get0_algs(PKCS7_SIGNER_INFO si, EVP_PKEY *pk,
465			X509_ALGOR pdig, X509_ALGOR psig)
466			{
467	✗✓	20	if (pk)
468			*pk = si->pkey;
469	✗✓	10	if (pdig)
470			*pdig = si->digest_alg;
471	✓✗	10	if (psig)
472		10	*psig = si->digest_enc_alg;
473		10	}
474
475			void
476			PKCS7_RECIP_INFO_get0_alg(PKCS7_RECIP_INFO ri, X509_ALGOR *penc)
477			{
478	✓✗	6	if (penc)
479		3	*penc = ri->key_enc_algor;
480		3	}
481
482			PKCS7_RECIP_INFO *
483			PKCS7_add_recipient(PKCS7 p7, X509 x509)
484			{
485			PKCS7_RECIP_INFO *ri;
486
487	✓✗	6	if ((ri = PKCS7_RECIP_INFO_new()) == NULL)
488			goto err;
489	✓✗	3	if (!PKCS7_RECIP_INFO_set(ri, x509))
490			goto err;
491	✓✗	3	if (!PKCS7_add_recipient_info(p7, ri))
492			goto err;
493		3	return ri;
494			err:
495			if (ri)
496			PKCS7_RECIP_INFO_free(ri);
497			return NULL;
498		3	}
499
500			int
501			PKCS7_add_recipient_info(PKCS7 p7, PKCS7_RECIP_INFO ri)
502			{
503			int i;
504			STACK_OF(PKCS7_RECIP_INFO) *sk;
505
506		6	i = OBJ_obj2nid(p7->type);
507	✗✓✗	3	switch (i) {
508			case NID_pkcs7_signedAndEnveloped:
509			sk = p7->d.signed_and_enveloped->recipientinfo;
510			break;
511			case NID_pkcs7_enveloped:
512		3	sk = p7->d.enveloped->recipientinfo;
513		3	break;
514			default:
515			PKCS7error(PKCS7_R_WRONG_CONTENT_TYPE);
516			return (0);
517			}
518
519	✗✓	3	if (!sk_PKCS7_RECIP_INFO_push(sk, ri))
520			return 0;
521		3	return (1);
522		3	}
523
524			int
525			PKCS7_RECIP_INFO_set(PKCS7_RECIP_INFO p7i, X509 x509)
526			{
527			int ret;
528			EVP_PKEY *pkey = NULL;
529	✗✓	6	if (!ASN1_INTEGER_set(p7i->version, 0))
530			return 0;
531	✗✓	6	if (!X509_NAME_set(&p7i->issuer_and_serial->issuer,
532		3	X509_get_issuer_name(x509)))
533			return 0;
534
535		3	ASN1_INTEGER_free(p7i->issuer_and_serial->serial);
536	✗✓	3	if (!(p7i->issuer_and_serial->serial =
537		3	ASN1_STRING_dup(X509_get_serialNumber(x509))))
538			return 0;
539
540		3	pkey = X509_get_pubkey(x509);
541
542	✓✗✓✗ ✗✓	9	if (!pkey \|\| !pkey->ameth \|\| !pkey->ameth->pkey_ctrl) {
543			PKCS7error(PKCS7_R_ENCRYPTION_NOT_SUPPORTED_FOR_THIS_KEY_TYPE);
544			goto err;
545			}
546
547		3	ret = pkey->ameth->pkey_ctrl(pkey, ASN1_PKEY_CTRL_PKCS7_ENCRYPT,
548		3	0, p7i);
549	✗✓	3	if (ret == -2) {
550			PKCS7error(PKCS7_R_ENCRYPTION_NOT_SUPPORTED_FOR_THIS_KEY_TYPE);
551			goto err;
552			}
553	✗✓	3	if (ret <= 0) {
554			PKCS7error(PKCS7_R_ENCRYPTION_CTRL_FAILURE);
555			goto err;
556			}
557
558		3	EVP_PKEY_free(pkey);
559
560		3	CRYPTO_add(&x509->references, 1, CRYPTO_LOCK_X509);
561		3	p7i->cert = x509;
562
563		3	return 1;
564
565			err:
566			EVP_PKEY_free(pkey);
567			return 0;
568		3	}
569
570			X509 *
571			PKCS7_cert_from_signer_info(PKCS7 p7, PKCS7_SIGNER_INFO si)
572			{
573			if (PKCS7_type_is_signed(p7))
574			return(X509_find_by_issuer_and_serial(p7->d.sign->cert,
575			si->issuer_and_serial->issuer,
576			si->issuer_and_serial->serial));
577			else
578			return (NULL);
579			}
580
581			int
582			PKCS7_set_cipher(PKCS7 p7, const EVP_CIPHER cipher)
583			{
584			int i;
585			PKCS7_ENC_CONTENT *ec;
586
587		6	i = OBJ_obj2nid(p7->type);
588	✗✓✗	3	switch (i) {
589			case NID_pkcs7_signedAndEnveloped:
590			ec = p7->d.signed_and_enveloped->enc_data;
591			break;
592			case NID_pkcs7_enveloped:
593		3	ec = p7->d.enveloped->enc_data;
594		3	break;
595			default:
596			PKCS7error(PKCS7_R_WRONG_CONTENT_TYPE);
597			return (0);
598			}
599
600			/* Check cipher OID exists and has data in it*/
601		3	i = EVP_CIPHER_type(cipher);
602	✗✓	3	if (i == NID_undef) {
603			PKCS7error(PKCS7_R_CIPHER_HAS_NO_OBJECT_IDENTIFIER);
604			return (0);
605			}
606
607		3	ec->cipher = cipher;
608		3	return 1;
609		3	}
610
611			int
612			PKCS7_stream(unsigned char **boundary, PKCS7 p7)
613			{
614			ASN1_OCTET_STRING *os = NULL;
615
616			switch (OBJ_obj2nid(p7->type)) {
617			case NID_pkcs7_data:
618			os = p7->d.data;
619			break;
620
621			case NID_pkcs7_signedAndEnveloped:
622			os = p7->d.signed_and_enveloped->enc_data->enc_data;
623			if (os == NULL) {
624			os = ASN1_OCTET_STRING_new();
625			p7->d.signed_and_enveloped->enc_data->enc_data = os;
626			}
627			break;
628
629			case NID_pkcs7_enveloped:
630			os = p7->d.enveloped->enc_data->enc_data;
631			if (os == NULL) {
632			os = ASN1_OCTET_STRING_new();
633			p7->d.enveloped->enc_data->enc_data = os;
634			}
635			break;
636
637			case NID_pkcs7_signed:
638			os = p7->d.sign->contents->d.data;
639			break;
640
641			default:
642			os = NULL;
643			break;
644			}
645
646			if (os == NULL)
647			return 0;
648
649			os->flags \|= ASN1_STRING_FLAG_NDEF;
650			*boundary = &os->data;
651
652			return 1;
653			}