[thirdparty/openssl.git] / crypto / pkcs7 / pk7_lib.c

/* crypto/pkcs7/pk7_lib.c */
/* 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 "cryptlib.h"
#include <openssl/objects.h>
#include <openssl/x509.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=M_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())) {
			PKCS7err(PKCS7_F_PKCS7_ADD_SIGNER,ERR_R_MALLOC_FAILURE);
			return(0);
		}
		alg->algorithm=OBJ_nid2obj(nid);
		alg->parameter->type = V_ASN1_NULL;
		sk_X509_ALGOR_push(md_sk,alg);
		}

	sk_PKCS7_SIGNER_INFO_push(signer_sk,psi);
	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();
	CRYPTO_add(&x509->references,1,CRYPTO_LOCK_X509);
	sk_X509_push(*sk,x509);
	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();

	CRYPTO_add(&crl->references,1,CRYPTO_LOCK_X509_CRL);
	sk_X509_CRL_push(*sk,crl);
	return(1);
	}

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

	if (pkey->type == EVP_PKEY_DSA || pkey->type == EVP_PKEY_EC)
		is_dsa = 1;
	else
		is_dsa = 0;
	/* 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. */
	M_ASN1_INTEGER_free(p7i->issuer_and_serial->serial);
	if (!(p7i->issuer_and_serial->serial=
			M_ASN1_INTEGER_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 */
	if (is_dsa) p7i->digest_alg->algorithm=OBJ_nid2obj(NID_sha1);
	else	
		p7i->digest_alg->algorithm=OBJ_nid2obj(EVP_MD_type(dgst));

	if (p7i->digest_alg->parameter != NULL)
		ASN1_TYPE_free(p7i->digest_alg->parameter);
	if ((p7i->digest_alg->parameter=ASN1_TYPE_new()) == NULL)
		goto err;
	p7i->digest_alg->parameter->type=V_ASN1_NULL;

	if (p7i->digest_enc_alg->parameter != NULL)
		ASN1_TYPE_free(p7i->digest_enc_alg->parameter);
	nid = EVP_PKEY_type(pkey->type);
	if (nid == EVP_PKEY_RSA)
		{
		p7i->digest_enc_alg->algorithm=OBJ_nid2obj(NID_rsaEncryption);
		if (!(p7i->digest_enc_alg->parameter=ASN1_TYPE_new()))
			goto err;
		p7i->digest_enc_alg->parameter->type=V_ASN1_NULL;
		}
	else if (nid == EVP_PKEY_DSA)
		{
#if 1
		/* use 'dsaEncryption' OID for compatibility with other software
		 * (PKCS #7 v1.5 does specify how to handle DSA) ... */
		p7i->digest_enc_alg->algorithm=OBJ_nid2obj(NID_dsa);
#else
		/* ... although the 'dsaWithSHA1' OID (as required by RFC 2630 for CMS)
		 * would make more sense. */
		p7i->digest_enc_alg->algorithm=OBJ_nid2obj(NID_dsaWithSHA1);
#endif
		p7i->digest_enc_alg->parameter = NULL; /* special case for DSA: omit 'parameter'! */
		}
	else if (nid == EVP_PKEY_EC)
		{
		p7i->digest_enc_alg->algorithm=OBJ_nid2obj(NID_ecdsa_with_SHA1);
		if (!(p7i->digest_enc_alg->parameter=ASN1_TYPE_new()))
			goto err;
		p7i->digest_enc_alg->parameter->type=V_ASN1_NULL;
		}
	else
		return(0);

	return(1);
err:
	return(0);
	}

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

	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:
	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 (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);
	}

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:
	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);
		}

	sk_PKCS7_RECIP_INFO_push(sk,ri);
	return(1);
	}

int PKCS7_RECIP_INFO_set(PKCS7_RECIP_INFO *p7i, X509 *x509)
	{
	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;

	M_ASN1_INTEGER_free(p7i->issuer_and_serial->serial);
	if (!(p7i->issuer_and_serial->serial=
		M_ASN1_INTEGER_dup(X509_get_serialNumber(x509))))
		return 0;

	X509_ALGOR_free(p7i->key_enc_algor);
	if (!(p7i->key_enc_algor= X509_ALGOR_dup(x509->cert_info->key->algor)))
		return 0;

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

	return(1);
	}

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;
	ASN1_OBJECT *objtmp;
	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);
	}
	objtmp = OBJ_nid2obj(i);

	ec->cipher = cipher;
	return 1;
	}
Commit	Line	Data
d02b48c6	1	/* crypto/pkcs7/pk7_lib.c */
58964a49	2	/* Copyright (C) 1995-1998 Eric Young (eay@cryptsoft.com)
d02b48c6 RE	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	#include "cryptlib.h"
ec577822 BM	61	#include <openssl/objects.h>
ec577822 BM	62	#include <openssl/x509.h>
d02b48c6	63
6b691a5c	64	long PKCS7_ctrl(PKCS7 p7, int cmd, long larg, char parg)
d02b48c6 RE	65	{
	66	int nid;
	67	long ret;
	68
	69	nid=OBJ_obj2nid(p7->type);
	70
	71	switch (cmd)
	72	{
	73	case PKCS7_OP_SET_DETACHED_SIGNATURE:
	74	if (nid == NID_pkcs7_signed)
	75	{
	76	ret=p7->detached=(int)larg;
48921e00	77	if (ret && PKCS7_type_is_data(p7->d.sign->contents))
f8049301 DSH	78	{
	79	ASN1_OCTET_STRING *os;
	80	os=p7->d.sign->contents->d.data;
	81	ASN1_OCTET_STRING_free(os);
	82	p7->d.sign->contents->d.data = NULL;
	83	}
d02b48c6 RE	84	}
	85	else
	86	{
	87	PKCS7err(PKCS7_F_PKCS7_CTRL,PKCS7_R_OPERATION_NOT_SUPPORTED_ON_THIS_TYPE);
	88	ret=0;
	89	}
	90	break;
	91	case PKCS7_OP_GET_DETACHED_SIGNATURE:
	92	if (nid == NID_pkcs7_signed)
	93	{
9d6b1ce6 DSH	94	if(!p7->d.sign \|\| !p7->d.sign->contents->d.ptr)
	95	ret = 1;
	96	else ret = 0;
	97
	98	p7->detached = ret;
d02b48c6 RE	99	}
	100	else
	101	{
	102	PKCS7err(PKCS7_F_PKCS7_CTRL,PKCS7_R_OPERATION_NOT_SUPPORTED_ON_THIS_TYPE);
	103	ret=0;
	104	}
	105
	106	break;
	107	default:
dfeab068 RE	108	PKCS7err(PKCS7_F_PKCS7_CTRL,PKCS7_R_UNKNOWN_OPERATION);
dfeab068 RE	109	ret=0;
d02b48c6 RE	110	}
	111	return(ret);
	112	}
	113
6b691a5c	114	int PKCS7_content_new(PKCS7 *p7, int type)
d02b48c6 RE	115	{
	116	PKCS7 *ret=NULL;
	117
	118	if ((ret=PKCS7_new()) == NULL) goto err;
	119	if (!PKCS7_set_type(ret,type)) goto err;
	120	if (!PKCS7_set_content(p7,ret)) goto err;
	121
	122	return(1);
	123	err:
	124	if (ret != NULL) PKCS7_free(ret);
	125	return(0);
	126	}
	127
6b691a5c	128	int PKCS7_set_content(PKCS7 p7, PKCS7 p7_data)
d02b48c6 RE	129	{
	130	int i;
	131
	132	i=OBJ_obj2nid(p7->type);
	133	switch (i)
	134	{
	135	case NID_pkcs7_signed:
	136	if (p7->d.sign->contents != NULL)
d8223efd	137	PKCS7_free(p7->d.sign->contents);
d02b48c6 RE	138	p7->d.sign->contents=p7_data;
	139	break;
	140	case NID_pkcs7_digest:
c5a55463 DSH	141	if (p7->d.digest->contents != NULL)
	142	PKCS7_free(p7->d.digest->contents);
	143	p7->d.digest->contents=p7_data;
	144	break;
d02b48c6 RE	145	case NID_pkcs7_data:
	146	case NID_pkcs7_enveloped:
	147	case NID_pkcs7_signedAndEnveloped:
	148	case NID_pkcs7_encrypted:
	149	default:
	150	PKCS7err(PKCS7_F_PKCS7_SET_CONTENT,PKCS7_R_UNSUPPORTED_CONTENT_TYPE);
	151	goto err;
	152	}
	153	return(1);
	154	err:
	155	return(0);
	156	}
	157
6b691a5c	158	int PKCS7_set_type(PKCS7 *p7, int type)
d02b48c6 RE	159	{
	160	ASN1_OBJECT *obj;
	161
9d6b1ce6	162	/PKCS7_content_free(p7);/
d02b48c6 RE	163	obj=OBJ_nid2obj(type); /* will not fail */
	164
	165	switch (type)
	166	{
	167	case NID_pkcs7_signed:
	168	p7->type=obj;
	169	if ((p7->d.sign=PKCS7_SIGNED_new()) == NULL)
	170	goto err;
a0e7c8ee DSH	171	if (!ASN1_INTEGER_set(p7->d.sign->version,1))
	172	{
	173	PKCS7_SIGNED_free(p7->d.sign);
	174	p7->d.sign=NULL;
	175	goto err;
	176	}
d02b48c6 RE	177	break;
	178	case NID_pkcs7_data:
	179	p7->type=obj;
08e9c1af	180	if ((p7->d.data=M_ASN1_OCTET_STRING_new()) == NULL)
d02b48c6 RE	181	goto err;
d02b48c6 RE	182	break;
58964a49 RE	183	case NID_pkcs7_signedAndEnveloped:
	184	p7->type=obj;
	185	if ((p7->d.signed_and_enveloped=PKCS7_SIGN_ENVELOPE_new())
dfeab068 RE	186	== NULL) goto err;
dfeab068 RE	187	ASN1_INTEGER_set(p7->d.signed_and_enveloped->version,1);
a0e7c8ee DSH	188	if (!ASN1_INTEGER_set(p7->d.signed_and_enveloped->version,1))
a0e7c8ee DSH	189	goto err;
a43cf9fa DSH	190	p7->d.signed_and_enveloped->enc_data->content_type
a43cf9fa DSH	191	= OBJ_nid2obj(NID_pkcs7_data);
58964a49	192	break;
d02b48c6	193	case NID_pkcs7_enveloped:
dfeab068 RE	194	p7->type=obj;
	195	if ((p7->d.enveloped=PKCS7_ENVELOPE_new())
	196	== NULL) goto err;
a0e7c8ee DSH	197	if (!ASN1_INTEGER_set(p7->d.enveloped->version,0))
a0e7c8ee DSH	198	goto err;
a43cf9fa DSH	199	p7->d.enveloped->enc_data->content_type
a43cf9fa DSH	200	= OBJ_nid2obj(NID_pkcs7_data);
dfeab068	201	break;
d02b48c6	202	case NID_pkcs7_encrypted:
c6c34506 DSH	203	p7->type=obj;
	204	if ((p7->d.encrypted=PKCS7_ENCRYPT_new())
	205	== NULL) goto err;
a0e7c8ee DSH	206	if (!ASN1_INTEGER_set(p7->d.encrypted->version,0))
a0e7c8ee DSH	207	goto err;
a43cf9fa DSH	208	p7->d.encrypted->enc_data->content_type
a43cf9fa DSH	209	= OBJ_nid2obj(NID_pkcs7_data);
c6c34506 DSH	210	break;
	211
	212	case NID_pkcs7_digest:
0602abf5 DSH	213	p7->type=obj;
	214	if ((p7->d.digest=PKCS7_DIGEST_new())
	215	== NULL) goto err;
a0e7c8ee DSH	216	if (!ASN1_INTEGER_set(p7->d.digest->version,0))
a0e7c8ee DSH	217	goto err;
0602abf5	218	break;
d02b48c6 RE	219	default:
	220	PKCS7err(PKCS7_F_PKCS7_SET_TYPE,PKCS7_R_UNSUPPORTED_CONTENT_TYPE);
	221	goto err;
	222	}
	223	return(1);
	224	err:
	225	return(0);
	226	}
	227
8d9086df DSH	228	int PKCS7_set0_type_other(PKCS7 p7, int type, ASN1_TYPE other)
	229	{
	230	p7->type = OBJ_nid2obj(type);
	231	p7->d.other = other;
	232	return 1;
	233	}
	234
6b691a5c	235	int PKCS7_add_signer(PKCS7 p7, PKCS7_SIGNER_INFO psi)
d02b48c6 RE	236	{
	237	int i,j,nid;
	238	X509_ALGOR *alg;
b05b50e6	239	STACK_OF(PKCS7_SIGNER_INFO) *signer_sk;
426edadf	240	STACK_OF(X509_ALGOR) *md_sk;
d02b48c6 RE	241
d02b48c6 RE	242	i=OBJ_obj2nid(p7->type);
58964a49	243	switch (i)
d02b48c6	244	{
58964a49 RE	245	case NID_pkcs7_signed:
	246	signer_sk= p7->d.sign->signer_info;
	247	md_sk= p7->d.sign->md_algs;
	248	break;
	249	case NID_pkcs7_signedAndEnveloped:
	250	signer_sk= p7->d.signed_and_enveloped->signer_info;
	251	md_sk= p7->d.signed_and_enveloped->md_algs;
	252	break;
	253	default:
d02b48c6 RE	254	PKCS7err(PKCS7_F_PKCS7_ADD_SIGNER,PKCS7_R_WRONG_CONTENT_TYPE);
	255	return(0);
	256	}
	257
d02b48c6 RE	258	nid=OBJ_obj2nid(psi->digest_alg->algorithm);
	259
	260	/* If the digest is not currently listed, add it */
	261	j=0;
426edadf	262	for (i=0; i<sk_X509_ALGOR_num(md_sk); i++)
d02b48c6	263	{
426edadf	264	alg=sk_X509_ALGOR_value(md_sk,i);
d02b48c6 RE	265	if (OBJ_obj2nid(alg->algorithm) == nid)
	266	{
	267	j=1;
	268	break;
	269	}
	270	}
	271	if (!j) /* we need to add another algorithm */
	272	{
b216664f DSH	273	if(!(alg=X509_ALGOR_new())
	274	\|\| !(alg->parameter = ASN1_TYPE_new())) {
	275	PKCS7err(PKCS7_F_PKCS7_ADD_SIGNER,ERR_R_MALLOC_FAILURE);
	276	return(0);
	277	}
d02b48c6	278	alg->algorithm=OBJ_nid2obj(nid);
b216664f	279	alg->parameter->type = V_ASN1_NULL;
426edadf	280	sk_X509_ALGOR_push(md_sk,alg);
d02b48c6 RE	281	}
d02b48c6 RE	282
b05b50e6	283	sk_PKCS7_SIGNER_INFO_push(signer_sk,psi);
d02b48c6 RE	284	return(1);
	285	}
	286
6b691a5c	287	int PKCS7_add_certificate(PKCS7 p7, X509 x509)
d02b48c6 RE	288	{
d02b48c6 RE	289	int i;
f73e07cf	290	STACK_OF(X509) **sk;
d02b48c6 RE	291
d02b48c6 RE	292	i=OBJ_obj2nid(p7->type);
58964a49	293	switch (i)
d02b48c6	294	{
58964a49 RE	295	case NID_pkcs7_signed:
	296	sk= &(p7->d.sign->cert);
	297	break;
	298	case NID_pkcs7_signedAndEnveloped:
	299	sk= &(p7->d.signed_and_enveloped->cert);
	300	break;
	301	default:
	302	PKCS7err(PKCS7_F_PKCS7_ADD_CERTIFICATE,PKCS7_R_WRONG_CONTENT_TYPE);
d02b48c6 RE	303	return(0);
	304	}
	305
58964a49	306	if (*sk == NULL)
f73e07cf	307	*sk=sk_X509_new_null();
d02b48c6	308	CRYPTO_add(&x509->references,1,CRYPTO_LOCK_X509);
f73e07cf	309	sk_X509_push(*sk,x509);
d02b48c6 RE	310	return(1);
	311	}
	312
6b691a5c	313	int PKCS7_add_crl(PKCS7 p7, X509_CRL crl)
d02b48c6 RE	314	{
d02b48c6 RE	315	int i;
6d114240	316	STACK_OF(X509_CRL) **sk;
58964a49	317
d02b48c6	318	i=OBJ_obj2nid(p7->type);
58964a49	319	switch (i)
d02b48c6	320	{
58964a49 RE	321	case NID_pkcs7_signed:
	322	sk= &(p7->d.sign->crl);
	323	break;
	324	case NID_pkcs7_signedAndEnveloped:
	325	sk= &(p7->d.signed_and_enveloped->crl);
	326	break;
	327	default:
	328	PKCS7err(PKCS7_F_PKCS7_ADD_CRL,PKCS7_R_WRONG_CONTENT_TYPE);
d02b48c6 RE	329	return(0);
	330	}
	331
58964a49	332	if (*sk == NULL)
6d114240	333	*sk=sk_X509_CRL_new_null();
d02b48c6 RE	334
d02b48c6 RE	335	CRYPTO_add(&crl->references,1,CRYPTO_LOCK_X509_CRL);
6d114240	336	sk_X509_CRL_push(*sk,crl);
d02b48c6 RE	337	return(1);
	338	}
	339
6b691a5c	340	int PKCS7_SIGNER_INFO_set(PKCS7_SIGNER_INFO p7i, X509 x509, EVP_PKEY *pkey,
13588350	341	const EVP_MD *dgst)
d02b48c6	342	{
279fe3b1	343	int nid;
55f30198	344	char is_dsa;
279fe3b1	345
5488bb61	346	if (pkey->type == EVP_PKEY_DSA \|\| pkey->type == EVP_PKEY_EC)
279fe3b1 BM	347	is_dsa = 1;
	348	else
	349	is_dsa = 0;
d02b48c6	350	/* We now need to add another PKCS7_SIGNER_INFO entry */
a0e7c8ee DSH	351	if (!ASN1_INTEGER_set(p7i->version,1))
	352	goto err;
	353	if (!X509_NAME_set(&p7i->issuer_and_serial->issuer,
	354	X509_get_issuer_name(x509)))
	355	goto err;
d02b48c6 RE	356
	357	/* because ASN1_INTEGER_set is used to set a 'long' we will do
	358	* things the ugly way. */
08e9c1af	359	M_ASN1_INTEGER_free(p7i->issuer_and_serial->serial);
a0e7c8ee DSH	360	if (!(p7i->issuer_and_serial->serial=
	361	M_ASN1_INTEGER_dup(X509_get_serialNumber(x509))))
	362	goto err;
d02b48c6 RE	363
	364	/* lets keep the pkey around for a while */
	365	CRYPTO_add(&pkey->references,1,CRYPTO_LOCK_EVP_PKEY);
	366	p7i->pkey=pkey;
	367
	368	/* Set the algorithms */
55f30198	369	if (is_dsa) p7i->digest_alg->algorithm=OBJ_nid2obj(NID_sha1);
dfeab068 RE	370	else
dfeab068 RE	371	p7i->digest_alg->algorithm=OBJ_nid2obj(EVP_MD_type(dgst));
d02b48c6	372
10243d97 DSH	373	if (p7i->digest_alg->parameter != NULL)
	374	ASN1_TYPE_free(p7i->digest_alg->parameter);
	375	if ((p7i->digest_alg->parameter=ASN1_TYPE_new()) == NULL)
	376	goto err;
	377	p7i->digest_alg->parameter->type=V_ASN1_NULL;
	378
d02b48c6 RE	379	if (p7i->digest_enc_alg->parameter != NULL)
d02b48c6 RE	380	ASN1_TYPE_free(p7i->digest_enc_alg->parameter);
279fe3b1 BM	381	nid = EVP_PKEY_type(pkey->type);
	382	if (nid == EVP_PKEY_RSA)
	383	{
	384	p7i->digest_enc_alg->algorithm=OBJ_nid2obj(NID_rsaEncryption);
55f30198 DSH	385	if (!(p7i->digest_enc_alg->parameter=ASN1_TYPE_new()))
	386	goto err;
	387	p7i->digest_enc_alg->parameter->type=V_ASN1_NULL;
279fe3b1 BM	388	}
	389	else if (nid == EVP_PKEY_DSA)
	390	{
	391	#if 1
	392	/* use 'dsaEncryption' OID for compatibility with other software
	393	* (PKCS #7 v1.5 does specify how to handle DSA) ... */
	394	p7i->digest_enc_alg->algorithm=OBJ_nid2obj(NID_dsa);
	395	#else
	396	/* ... although the 'dsaWithSHA1' OID (as required by RFC 2630 for CMS)
	397	* would make more sense. */
	398	p7i->digest_enc_alg->algorithm=OBJ_nid2obj(NID_dsaWithSHA1);
	399	#endif
	400	p7i->digest_enc_alg->parameter = NULL; /* special case for DSA: omit 'parameter'! */
	401	}
5488bb61	402	else if (nid == EVP_PKEY_EC)
279fe3b1 BM	403	{
	404	p7i->digest_enc_alg->algorithm=OBJ_nid2obj(NID_ecdsa_with_SHA1);
	405	if (!(p7i->digest_enc_alg->parameter=ASN1_TYPE_new()))
	406	goto err;
	407	p7i->digest_enc_alg->parameter->type=V_ASN1_NULL;
	408	}
	409	else
	410	return(0);
d02b48c6	411
d02b48c6 RE	412	return(1);
	413	err:
	414	return(0);
	415	}
	416
6b691a5c	417	PKCS7_SIGNER_INFO PKCS7_add_signature(PKCS7 p7, X509 x509, EVP_PKEY pkey,
13588350	418	const EVP_MD *dgst)
d02b48c6 RE	419	{
	420	PKCS7_SIGNER_INFO *si;
	421
	422	if ((si=PKCS7_SIGNER_INFO_new()) == NULL) goto err;
	423	if (!PKCS7_SIGNER_INFO_set(si,x509,pkey,dgst)) goto err;
	424	if (!PKCS7_add_signer(p7,si)) goto err;
	425	return(si);
	426	err:
	427	return(NULL);
	428	}
	429
c5a55463 DSH	430	int PKCS7_set_digest(PKCS7 p7, const EVP_MD md)
	431	{
	432	if (PKCS7_type_is_digest(p7))
	433	{
	434	if(!(p7->d.digest->md->parameter = ASN1_TYPE_new()))
	435	{
	436	PKCS7err(PKCS7_F_PKCS7_SET_DIGEST,ERR_R_MALLOC_FAILURE);
	437	return 0;
	438	}
	439	p7->d.digest->md->parameter->type = V_ASN1_NULL;
	440	p7->d.digest->md->algorithm = OBJ_nid2obj(EVP_MD_nid(md));
	441	return 1;
	442	}
	443
	444	PKCS7err(PKCS7_F_PKCS7_SET_DIGEST,PKCS7_R_WRONG_CONTENT_TYPE);
	445	return 1;
	446	}
	447
b05b50e6	448	STACK_OF(PKCS7_SIGNER_INFO) PKCS7_get_signer_info(PKCS7 p7)
d02b48c6 RE	449	{
	450	if (PKCS7_type_is_signed(p7))
	451	{
	452	return(p7->d.sign->signer_info);
	453	}
dfeab068 RE	454	else if (PKCS7_type_is_signedAndEnveloped(p7))
	455	{
	456	return(p7->d.signed_and_enveloped->signer_info);
	457	}
d02b48c6 RE	458	else
	459	return(NULL);
	460	}
	461
6b691a5c	462	PKCS7_RECIP_INFO PKCS7_add_recipient(PKCS7 p7, X509 *x509)
58964a49 RE	463	{
	464	PKCS7_RECIP_INFO *ri;
	465
	466	if ((ri=PKCS7_RECIP_INFO_new()) == NULL) goto err;
	467	if (!PKCS7_RECIP_INFO_set(ri,x509)) goto err;
	468	if (!PKCS7_add_recipient_info(p7,ri)) goto err;
	469	return(ri);
	470	err:
	471	return(NULL);
	472	}
	473
6b691a5c	474	int PKCS7_add_recipient_info(PKCS7 p7, PKCS7_RECIP_INFO ri)
58964a49 RE	475	{
58964a49 RE	476	int i;
8f0edcd1	477	STACK_OF(PKCS7_RECIP_INFO) *sk;
58964a49 RE	478
	479	i=OBJ_obj2nid(p7->type);
	480	switch (i)
	481	{
	482	case NID_pkcs7_signedAndEnveloped:
	483	sk= p7->d.signed_and_enveloped->recipientinfo;
	484	break;
dfeab068 RE	485	case NID_pkcs7_enveloped:
	486	sk= p7->d.enveloped->recipientinfo;
	487	break;
58964a49 RE	488	default:
	489	PKCS7err(PKCS7_F_PKCS7_ADD_RECIPIENT_INFO,PKCS7_R_WRONG_CONTENT_TYPE);
	490	return(0);
	491	}
	492
8f0edcd1	493	sk_PKCS7_RECIP_INFO_push(sk,ri);
58964a49 RE	494	return(1);
	495	}
	496
6b691a5c	497	int PKCS7_RECIP_INFO_set(PKCS7_RECIP_INFO p7i, X509 x509)
58964a49	498	{
a0e7c8ee DSH	499	if (!ASN1_INTEGER_set(p7i->version,0))
	500	return 0;
	501	if (!X509_NAME_set(&p7i->issuer_and_serial->issuer,
	502	X509_get_issuer_name(x509)))
	503	return 0;
58964a49	504
08e9c1af	505	M_ASN1_INTEGER_free(p7i->issuer_and_serial->serial);
a0e7c8ee DSH	506	if (!(p7i->issuer_and_serial->serial=
	507	M_ASN1_INTEGER_dup(X509_get_serialNumber(x509))))
	508	return 0;
58964a49	509
dfeab068	510	X509_ALGOR_free(p7i->key_enc_algor);
a0e7c8ee DSH	511	if (!(p7i->key_enc_algor= X509_ALGOR_dup(x509->cert_info->key->algor)))
a0e7c8ee DSH	512	return 0;
dfeab068	513
58964a49 RE	514	CRYPTO_add(&x509->references,1,CRYPTO_LOCK_X509);
	515	p7i->cert=x509;
	516
	517	return(1);
	518	}
	519
6b691a5c	520	X509 PKCS7_cert_from_signer_info(PKCS7 p7, PKCS7_SIGNER_INFO *si)
d02b48c6 RE	521	{
	522	if (PKCS7_type_is_signed(p7))
	523	return(X509_find_by_issuer_and_serial(p7->d.sign->cert,
	524	si->issuer_and_serial->issuer,
	525	si->issuer_and_serial->serial));
	526	else
	527	return(NULL);
	528	}
	529
84fa704c	530	int PKCS7_set_cipher(PKCS7 p7, const EVP_CIPHER cipher)
58964a49 RE	531	{
58964a49 RE	532	int i;
f45f40ff	533	ASN1_OBJECT *objtmp;
58964a49 RE	534	PKCS7_ENC_CONTENT *ec;
	535
	536	i=OBJ_obj2nid(p7->type);
	537	switch (i)
	538	{
	539	case NID_pkcs7_signedAndEnveloped:
	540	ec=p7->d.signed_and_enveloped->enc_data;
	541	break;
dfeab068 RE	542	case NID_pkcs7_enveloped:
	543	ec=p7->d.enveloped->enc_data;
	544	break;
58964a49 RE	545	default:
	546	PKCS7err(PKCS7_F_PKCS7_SET_CIPHER,PKCS7_R_WRONG_CONTENT_TYPE);
	547	return(0);
	548	}
	549
f45f40ff	550	/* Check cipher OID exists and has data in it*/
4b426580 DSH	551	i = EVP_CIPHER_type(cipher);
4b426580 DSH	552	if(i == NID_undef) {
f45f40ff DSH	553	PKCS7err(PKCS7_F_PKCS7_SET_CIPHER,PKCS7_R_CIPHER_HAS_NO_OBJECT_IDENTIFIER);
	554	return(0);
	555	}
4b426580	556	objtmp = OBJ_nid2obj(i);
84fa704c DSH	557
	558	ec->cipher = cipher;
	559	return 1;
58964a49 RE	560	}
58964a49 RE	561