Delete bundled copy of OpenSSL and replace with README.

openssl/crypto/pkcs7/pk7_doit.c

Index: openssl/crypto/pkcs7/pk7_doit.c
diff --git a/openssl/crypto/pkcs7/pk7_doit.c b/openssl/crypto/pkcs7/pk7_doit.c
deleted file mode 100644
index 4c12a9dcc9dfb467b037f5baddd4667732ee7d7c..0000000000000000000000000000000000000000
--- a/openssl/crypto/pkcs7/pk7_doit.c
+++ /dev/null
@@ -1,1300 +0,0 @@
-/* crypto/pkcs7/pk7_doit.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/rand.h>
-#include <openssl/objects.h>
-#include <openssl/x509.h>
-#include <openssl/x509v3.h>
-#include <openssl/err.h>
-
-static int add_attribute(STACK_OF(X509_ATTRIBUTE) **sk, int nid, int atrtype,
-			 void *value);
-static ASN1_TYPE *get_attribute(STACK_OF(X509_ATTRIBUTE) *sk, int nid);
-
-static int PKCS7_type_is_other(PKCS7* p7)
-	{
-	int isOther=1;
-	
-	int nid=OBJ_obj2nid(p7->type);
-
-	switch( nid )
-		{
-	case NID_pkcs7_data:
-	case NID_pkcs7_signed:
-	case NID_pkcs7_enveloped:
-	case NID_pkcs7_signedAndEnveloped:
-	case NID_pkcs7_digest:
-	case NID_pkcs7_encrypted:
-		isOther=0;
-		break;
-	default:
-		isOther=1;
-		}
-
-	return isOther;
-
-	}
-
-static ASN1_OCTET_STRING *PKCS7_get_octet_string(PKCS7 *p7)
-	{
-	if ( PKCS7_type_is_data(p7))
-		return p7->d.data;
-	if ( PKCS7_type_is_other(p7) && p7->d.other
-		&& (p7->d.other->type == V_ASN1_OCTET_STRING))
-		return p7->d.other->value.octet_string;
-	return NULL;
-	}
-
-static int PKCS7_bio_add_digest(BIO **pbio, X509_ALGOR *alg)
-	{
-	BIO *btmp;
-	const EVP_MD *md;
-	if ((btmp=BIO_new(BIO_f_md())) == NULL)
-		{
-		PKCS7err(PKCS7_F_PKCS7_BIO_ADD_DIGEST,ERR_R_BIO_LIB);
-		goto err;
-		}
-
-	md=EVP_get_digestbyobj(alg->algorithm);
-	if (md == NULL)
-		{
-		PKCS7err(PKCS7_F_PKCS7_BIO_ADD_DIGEST,PKCS7_R_UNKNOWN_DIGEST_TYPE);
-		goto err;
-		}
-
-	BIO_set_md(btmp,md);
-	if (*pbio == NULL)
-		*pbio=btmp;
-	else if (!BIO_push(*pbio,btmp))
-		{
-		PKCS7err(PKCS7_F_PKCS7_BIO_ADD_DIGEST,ERR_R_BIO_LIB);
-		goto err;
-		}
-	btmp=NULL;
-
-	return 1;
-
-	err:
-	if (btmp)
-		BIO_free(btmp);
-	return 0;
-
-	}
-
-static int pkcs7_encode_rinfo(PKCS7_RECIP_INFO *ri,
-					unsigned char *key, int keylen)
-	{
-	EVP_PKEY_CTX *pctx = NULL;
-	EVP_PKEY *pkey = NULL;
-	unsigned char *ek = NULL;
-	int ret = 0;
-	size_t eklen;
-
-	pkey = X509_get_pubkey(ri->cert);
-
-	if (!pkey)
-		return 0;
-
-	pctx = EVP_PKEY_CTX_new(pkey, NULL);
-	if (!pctx)
-		return 0;
-
-	if (EVP_PKEY_encrypt_init(pctx) <= 0)
-		goto err;
-
-	if (EVP_PKEY_CTX_ctrl(pctx, -1, EVP_PKEY_OP_ENCRYPT,
-				EVP_PKEY_CTRL_PKCS7_ENCRYPT, 0, ri) <= 0)
-		{
-		PKCS7err(PKCS7_F_PKCS7_ENCODE_RINFO, PKCS7_R_CTRL_ERROR);
-		goto err;
-		}
-
-	if (EVP_PKEY_encrypt(pctx, NULL, &eklen, key, keylen) <= 0)
-		goto err;
-
-	ek = OPENSSL_malloc(eklen);
-
-	if (ek == NULL)
-		{
-		PKCS7err(PKCS7_F_PKCS7_ENCODE_RINFO, ERR_R_MALLOC_FAILURE);
-		goto err;
-		}
-
-	if (EVP_PKEY_encrypt(pctx, ek, &eklen, key, keylen) <= 0)
-		goto err;
-
-	ASN1_STRING_set0(ri->enc_key, ek, eklen);
-	ek = NULL;
-
-	ret = 1;
-
-	err:
-	if (pkey)
-		EVP_PKEY_free(pkey);
-	if (pctx)
-		EVP_PKEY_CTX_free(pctx);
-	if (ek)
-		OPENSSL_free(ek);
-	return ret;
-
-	}
-
-
-static int pkcs7_decrypt_rinfo(unsigned char **pek, int *peklen,
-			       PKCS7_RECIP_INFO *ri, EVP_PKEY *pkey)
-	{
-	EVP_PKEY_CTX *pctx = NULL;
-	unsigned char *ek = NULL;
-	size_t eklen;
-
-	int ret = -1;
-
-	pctx = EVP_PKEY_CTX_new(pkey, NULL);
-	if (!pctx)
-		return -1;
-
-	if (EVP_PKEY_decrypt_init(pctx) <= 0)
-		goto err;
-
-	if (EVP_PKEY_CTX_ctrl(pctx, -1, EVP_PKEY_OP_DECRYPT,
-				EVP_PKEY_CTRL_PKCS7_DECRYPT, 0, ri) <= 0)
-		{
-		PKCS7err(PKCS7_F_PKCS7_DECRYPT_RINFO, PKCS7_R_CTRL_ERROR);
-		goto err;
-		}
-
-	if (EVP_PKEY_decrypt(pctx, NULL, &eklen,
-				ri->enc_key->data, ri->enc_key->length) <= 0)
-		goto err;
-
-	ek = OPENSSL_malloc(eklen);
-
-	if (ek == NULL)
-		{
-		PKCS7err(PKCS7_F_PKCS7_DECRYPT_RINFO, ERR_R_MALLOC_FAILURE);
-		goto err;
-		}
-
-	if (EVP_PKEY_decrypt(pctx, ek, &eklen,
-				ri->enc_key->data, ri->enc_key->length) <= 0)
-		{
-		ret = 0;
-		PKCS7err(PKCS7_F_PKCS7_DECRYPT_RINFO, ERR_R_EVP_LIB);
-		goto err;
-		}
-
-	ret = 1;
-
-	if (*pek)
-		{
-		OPENSSL_cleanse(*pek, *peklen);
-		OPENSSL_free(*pek);
-		}
-
-	*pek = ek;
-	*peklen = eklen;
-
-	err:
-	if (pctx)
-		EVP_PKEY_CTX_free(pctx);
-	if (!ret && ek)
-		OPENSSL_free(ek);
-
-	return ret;
-	}
-
-BIO *PKCS7_dataInit(PKCS7 *p7, BIO *bio)
-	{
-	int i;
-	BIO *out=NULL,*btmp=NULL;
-	X509_ALGOR *xa = NULL;
-	const EVP_CIPHER *evp_cipher=NULL;
-	STACK_OF(X509_ALGOR) *md_sk=NULL;
-	STACK_OF(PKCS7_RECIP_INFO) *rsk=NULL;
-	X509_ALGOR *xalg=NULL;
-	PKCS7_RECIP_INFO *ri=NULL;
-	ASN1_OCTET_STRING *os=NULL;
-
-	i=OBJ_obj2nid(p7->type);
-	p7->state=PKCS7_S_HEADER;
-
-	switch (i)
-		{
-	case NID_pkcs7_signed:
-		md_sk=p7->d.sign->md_algs;
-		os = PKCS7_get_octet_string(p7->d.sign->contents);
-		break;
-	case NID_pkcs7_signedAndEnveloped:
-		rsk=p7->d.signed_and_enveloped->recipientinfo;
-		md_sk=p7->d.signed_and_enveloped->md_algs;
-		xalg=p7->d.signed_and_enveloped->enc_data->algorithm;
-		evp_cipher=p7->d.signed_and_enveloped->enc_data->cipher;
-		if (evp_cipher == NULL)
-			{
-			PKCS7err(PKCS7_F_PKCS7_DATAINIT,
-						PKCS7_R_CIPHER_NOT_INITIALIZED);
-			goto err;
-			}
-		break;
-	case NID_pkcs7_enveloped:
-		rsk=p7->d.enveloped->recipientinfo;
-		xalg=p7->d.enveloped->enc_data->algorithm;
-		evp_cipher=p7->d.enveloped->enc_data->cipher;
-		if (evp_cipher == NULL)
-			{
-			PKCS7err(PKCS7_F_PKCS7_DATAINIT,
-						PKCS7_R_CIPHER_NOT_INITIALIZED);
-			goto err;
-			}
-		break;
-	case NID_pkcs7_digest:
-		xa = p7->d.digest->md;
-		os = PKCS7_get_octet_string(p7->d.digest->contents);
-		break;
-	case NID_pkcs7_data:
-		break;
-	default:
-		PKCS7err(PKCS7_F_PKCS7_DATAINIT,PKCS7_R_UNSUPPORTED_CONTENT_TYPE);
-	        goto err;
-		}
-
-	for (i=0; i<sk_X509_ALGOR_num(md_sk); i++)
-		if (!PKCS7_bio_add_digest(&out, sk_X509_ALGOR_value(md_sk, i)))
-			goto err;
-
-	if (xa && !PKCS7_bio_add_digest(&out, xa))
-			goto err;
-
-	if (evp_cipher != NULL)
-		{
-		unsigned char key[EVP_MAX_KEY_LENGTH];
-		unsigned char iv[EVP_MAX_IV_LENGTH];
-		int keylen,ivlen;
-		EVP_CIPHER_CTX *ctx;
-
-		if ((btmp=BIO_new(BIO_f_cipher())) == NULL)
-			{
-			PKCS7err(PKCS7_F_PKCS7_DATAINIT,ERR_R_BIO_LIB);
-			goto err;
-			}
-		BIO_get_cipher_ctx(btmp, &ctx);
-		keylen=EVP_CIPHER_key_length(evp_cipher);
-		ivlen=EVP_CIPHER_iv_length(evp_cipher);
-		xalg->algorithm = OBJ_nid2obj(EVP_CIPHER_type(evp_cipher));
-		if (ivlen > 0)
-			if (RAND_pseudo_bytes(iv,ivlen) <= 0)
-				goto err;
-		if (EVP_CipherInit_ex(ctx, evp_cipher, NULL, NULL, NULL, 1)<=0)
-			goto err;
-		if (EVP_CIPHER_CTX_rand_key(ctx, key) <= 0)
-			goto err;
-		if (EVP_CipherInit_ex(ctx, NULL, NULL, key, iv, 1) <= 0)
-			goto err;
-
-		if (ivlen > 0) {
-			if (xalg->parameter == NULL) {
-				xalg->parameter = ASN1_TYPE_new();
-				if (xalg->parameter == NULL)
-					goto err;
-			}
-			if(EVP_CIPHER_param_to_asn1(ctx, xalg->parameter) < 0)
-				goto err;
-		}
-
-		/* Lets do the pub key stuff :-) */
-		for (i=0; i<sk_PKCS7_RECIP_INFO_num(rsk); i++)
-			{
-			ri=sk_PKCS7_RECIP_INFO_value(rsk,i);
-			if (pkcs7_encode_rinfo(ri, key, keylen) <= 0)
-				goto err;
-			}
-		OPENSSL_cleanse(key, keylen);
-
-		if (out == NULL)
-			out=btmp;
-		else
-			BIO_push(out,btmp);
-		btmp=NULL;
-		}
-
-	if (bio == NULL)
-		{
-		if (PKCS7_is_detached(p7))
-			bio=BIO_new(BIO_s_null());
-		else if (os && os->length > 0)
-			bio = BIO_new_mem_buf(os->data, os->length);
-		if(bio == NULL)
-			{
-			bio=BIO_new(BIO_s_mem());
-			if (bio == NULL)
-				goto err;
-			BIO_set_mem_eof_return(bio,0);
-			}
-		}
-	if (out)
-		BIO_push(out,bio);
-	else
-		out = bio;
-	bio=NULL;
-	if (0)
-		{
-err:
-		if (out != NULL)
-			BIO_free_all(out);
-		if (btmp != NULL)
-			BIO_free_all(btmp);
-		out=NULL;
-		}
-	return(out);
-	}
-
-static int pkcs7_cmp_ri(PKCS7_RECIP_INFO *ri, X509 *pcert)
-	{
-	int ret;
-	ret = X509_NAME_cmp(ri->issuer_and_serial->issuer,
-				pcert->cert_info->issuer);
-	if (ret)
-		return ret;
-	return M_ASN1_INTEGER_cmp(pcert->cert_info->serialNumber,
-					ri->issuer_and_serial->serial);
-	}
-
-/* int */
-BIO *PKCS7_dataDecode(PKCS7 *p7, EVP_PKEY *pkey, BIO *in_bio, X509 *pcert)
-	{
-	int i,j;
-	BIO *out=NULL,*btmp=NULL,*etmp=NULL,*bio=NULL;
-	X509_ALGOR *xa;
-	ASN1_OCTET_STRING *data_body=NULL;
-	const EVP_MD *evp_md;
-	const EVP_CIPHER *evp_cipher=NULL;
-	EVP_CIPHER_CTX *evp_ctx=NULL;
-	X509_ALGOR *enc_alg=NULL;
-	STACK_OF(X509_ALGOR) *md_sk=NULL;
-	STACK_OF(PKCS7_RECIP_INFO) *rsk=NULL;
-	PKCS7_RECIP_INFO *ri=NULL;
-       unsigned char *ek = NULL, *tkey = NULL;
-       int eklen = 0, tkeylen = 0;
-
-	i=OBJ_obj2nid(p7->type);
-	p7->state=PKCS7_S_HEADER;
-
-	switch (i)
-		{
-	case NID_pkcs7_signed:
-		data_body=PKCS7_get_octet_string(p7->d.sign->contents);
-		md_sk=p7->d.sign->md_algs;
-		break;
-	case NID_pkcs7_signedAndEnveloped:
-		rsk=p7->d.signed_and_enveloped->recipientinfo;
-		md_sk=p7->d.signed_and_enveloped->md_algs;
-		data_body=p7->d.signed_and_enveloped->enc_data->enc_data;
-		enc_alg=p7->d.signed_and_enveloped->enc_data->algorithm;
-		evp_cipher=EVP_get_cipherbyobj(enc_alg->algorithm);
-		if (evp_cipher == NULL)
-			{
-			PKCS7err(PKCS7_F_PKCS7_DATADECODE,PKCS7_R_UNSUPPORTED_CIPHER_TYPE);
-			goto err;
-			}
-		break;
-	case NID_pkcs7_enveloped:
-		rsk=p7->d.enveloped->recipientinfo;
-		enc_alg=p7->d.enveloped->enc_data->algorithm;
-		data_body=p7->d.enveloped->enc_data->enc_data;
-		evp_cipher=EVP_get_cipherbyobj(enc_alg->algorithm);
-		if (evp_cipher == NULL)
-			{
-			PKCS7err(PKCS7_F_PKCS7_DATADECODE,PKCS7_R_UNSUPPORTED_CIPHER_TYPE);
-			goto err;
-			}
-		break;
-	default:
-		PKCS7err(PKCS7_F_PKCS7_DATADECODE,PKCS7_R_UNSUPPORTED_CONTENT_TYPE);
-	        goto err;
-		}
-
-	/* We will be checking the signature */
-	if (md_sk != NULL)
-		{
-		for (i=0; i<sk_X509_ALGOR_num(md_sk); i++)
-			{
-			xa=sk_X509_ALGOR_value(md_sk,i);
-			if ((btmp=BIO_new(BIO_f_md())) == NULL)
-				{
-				PKCS7err(PKCS7_F_PKCS7_DATADECODE,ERR_R_BIO_LIB);
-				goto err;
-				}
-
-			j=OBJ_obj2nid(xa->algorithm);
-			evp_md=EVP_get_digestbynid(j);
-			if (evp_md == NULL)
-				{
-				PKCS7err(PKCS7_F_PKCS7_DATADECODE,PKCS7_R_UNKNOWN_DIGEST_TYPE);
-				goto err;
-				}
-
-			BIO_set_md(btmp,evp_md);
-			if (out == NULL)
-				out=btmp;
-			else
-				BIO_push(out,btmp);
-			btmp=NULL;
-			}
-		}
-
-	if (evp_cipher != NULL)
-		{
-#if 0
-		unsigned char key[EVP_MAX_KEY_LENGTH];
-		unsigned char iv[EVP_MAX_IV_LENGTH];
-		unsigned char *p;
-		int keylen,ivlen;
-		int max;
-		X509_OBJECT ret;
-#endif
-
-		if ((etmp=BIO_new(BIO_f_cipher())) == NULL)
-			{
-			PKCS7err(PKCS7_F_PKCS7_DATADECODE,ERR_R_BIO_LIB);
-			goto err;
-			}
-
-		/* It was encrypted, we need to decrypt the secret key
-		 * with the private key */
-
-		/* Find the recipientInfo which matches the passed certificate
-		 * (if any)
-		 */
-
-		if (pcert)
-			{
-			for (i=0; i<sk_PKCS7_RECIP_INFO_num(rsk); i++)
-				{
-				ri=sk_PKCS7_RECIP_INFO_value(rsk,i);
-				if (!pkcs7_cmp_ri(ri, pcert))
-					break;
-				ri=NULL;
-				}
-			if (ri == NULL)
-				{
-				PKCS7err(PKCS7_F_PKCS7_DATADECODE,
-				      PKCS7_R_NO_RECIPIENT_MATCHES_CERTIFICATE);
-				goto err;
-				}
-			}
-
-		/* If we haven't got a certificate try each ri in turn */
-		if (pcert == NULL)
-			{
-			/* Always attempt to decrypt all rinfo even
-			 * after sucess as a defence against MMA timing
-			 * attacks.
-			 */
-			for (i=0; i<sk_PKCS7_RECIP_INFO_num(rsk); i++)
-				{
-				ri=sk_PKCS7_RECIP_INFO_value(rsk,i);
-				
-				if (pkcs7_decrypt_rinfo(&ek, &eklen,
-							ri, pkey) < 0)
-					goto err;
-				ERR_clear_error();
-				}
-			}
-		else
-			{
-			/* Only exit on fatal errors, not decrypt failure */
-			if (pkcs7_decrypt_rinfo(&ek, &eklen, ri, pkey) < 0)
-				goto err;
-			ERR_clear_error();
-			}
-
-		evp_ctx=NULL;
-		BIO_get_cipher_ctx(etmp,&evp_ctx);
-		if (EVP_CipherInit_ex(evp_ctx,evp_cipher,NULL,NULL,NULL,0) <= 0)
-			goto err;
-		if (EVP_CIPHER_asn1_to_param(evp_ctx,enc_alg->parameter) < 0)
-			goto err;
-		/* Generate random key as MMA defence */
-		tkeylen = EVP_CIPHER_CTX_key_length(evp_ctx);
-		tkey = OPENSSL_malloc(tkeylen);
-		if (!tkey)
-			goto err;
-		if (EVP_CIPHER_CTX_rand_key(evp_ctx, tkey) <= 0)
-			goto err;
-		if (ek == NULL)
-			{
-			ek = tkey;
-			eklen = tkeylen;
-			tkey = NULL;
-			}
-
-		if (eklen != EVP_CIPHER_CTX_key_length(evp_ctx)) {
-			/* Some S/MIME clients don't use the same key
-			 * and effective key length. The key length is
-			 * determined by the size of the decrypted RSA key.
-			 */
-			if(!EVP_CIPHER_CTX_set_key_length(evp_ctx, eklen))
-				{
-				/* Use random key as MMA defence */
-				OPENSSL_cleanse(ek, eklen);
-				OPENSSL_free(ek);
-				ek = tkey;
-				eklen = tkeylen;
-				tkey = NULL;
-				}
-		} 
-		/* Clear errors so we don't leak information useful in MMA */
-		ERR_clear_error();
-		if (EVP_CipherInit_ex(evp_ctx,NULL,NULL,ek,NULL,0) <= 0)
-			goto err;
-
-		if (ek)
-			{
-			OPENSSL_cleanse(ek,eklen);
-			OPENSSL_free(ek);
-                       ek = NULL;
-			}
-		if (tkey)
-			{
-			OPENSSL_cleanse(tkey,tkeylen);
-			OPENSSL_free(tkey);
-                       tkey = NULL;
-			}
-
-		if (out == NULL)
-			out=etmp;
-		else
-			BIO_push(out,etmp);
-		etmp=NULL;
-		}
-
-#if 1
-	if (PKCS7_is_detached(p7) || (in_bio != NULL))
-		{
-		bio=in_bio;
-		}
-	else 
-		{
-#if 0
-		bio=BIO_new(BIO_s_mem());
-		/* We need to set this so that when we have read all
-		 * the data, the encrypt BIO, if present, will read
-		 * EOF and encode the last few bytes */
-		BIO_set_mem_eof_return(bio,0);
-
-		if (data_body->length > 0)
-			BIO_write(bio,(char *)data_body->data,data_body->length);
-#else
-		if (data_body->length > 0)
-		      bio = BIO_new_mem_buf(data_body->data,data_body->length);
-		else {
-			bio=BIO_new(BIO_s_mem());
-			BIO_set_mem_eof_return(bio,0);
-		}
-		if (bio == NULL)
-			goto err;
-#endif
-		}
-	BIO_push(out,bio);
-	bio=NULL;
-#endif
-	if (0)
-		{
-err:
-               if (ek)
-                       {
-                       OPENSSL_cleanse(ek,eklen);
-                       OPENSSL_free(ek);
-                       }
-               if (tkey)
-                       {
-                       OPENSSL_cleanse(tkey,tkeylen);
-                       OPENSSL_free(tkey);
-                       }
-		if (out != NULL) BIO_free_all(out);
-		if (btmp != NULL) BIO_free_all(btmp);
-		if (etmp != NULL) BIO_free_all(etmp);
-		if (bio != NULL) BIO_free_all(bio);
-		out=NULL;
-		}
-	return(out);
-	}
-
-static BIO *PKCS7_find_digest(EVP_MD_CTX **pmd, BIO *bio, int nid)
-	{
-	for (;;)
-		{
-		bio=BIO_find_type(bio,BIO_TYPE_MD);
-		if (bio == NULL)
-			{
-			PKCS7err(PKCS7_F_PKCS7_FIND_DIGEST,PKCS7_R_UNABLE_TO_FIND_MESSAGE_DIGEST);
-			return NULL;	
-			}
-		BIO_get_md_ctx(bio,pmd);
-		if (*pmd == NULL)
-			{
-			PKCS7err(PKCS7_F_PKCS7_FIND_DIGEST,ERR_R_INTERNAL_ERROR);
-			return NULL;
-			}	
-		if (EVP_MD_CTX_type(*pmd) == nid)
-			return bio;
-		bio=BIO_next(bio);
-		}
-	return NULL;
-	}
-
-static int do_pkcs7_signed_attrib(PKCS7_SIGNER_INFO *si, EVP_MD_CTX *mctx)
-	{
-	unsigned char md_data[EVP_MAX_MD_SIZE];
-	unsigned int md_len;
-
-	/* Add signing time if not already present */
-	if (!PKCS7_get_signed_attribute(si, NID_pkcs9_signingTime))
-		{
-		if (!PKCS7_add0_attrib_signing_time(si, NULL))
-			{
-			PKCS7err(PKCS7_F_DO_PKCS7_SIGNED_ATTRIB,
-					ERR_R_MALLOC_FAILURE);
-			return 0;
-			}
-		}
-
-	/* Add digest */
-	if (!EVP_DigestFinal_ex(mctx, md_data,&md_len))
-		{
-		PKCS7err(PKCS7_F_DO_PKCS7_SIGNED_ATTRIB, ERR_R_EVP_LIB);
-		return 0;
-		}
-	if (!PKCS7_add1_attrib_digest(si, md_data, md_len))
-		{
-		PKCS7err(PKCS7_F_DO_PKCS7_SIGNED_ATTRIB, ERR_R_MALLOC_FAILURE);
-		return 0;
-		}
-
-	/* Now sign the attributes */
-	if (!PKCS7_SIGNER_INFO_sign(si))
-			return 0;
-
-	return 1;
-	}
-	
-				
-int PKCS7_dataFinal(PKCS7 *p7, BIO *bio)
-	{
-	int ret=0;
-	int i,j;
-	BIO *btmp;
-	PKCS7_SIGNER_INFO *si;
-	EVP_MD_CTX *mdc,ctx_tmp;
-	STACK_OF(X509_ATTRIBUTE) *sk;
-	STACK_OF(PKCS7_SIGNER_INFO) *si_sk=NULL;
-	ASN1_OCTET_STRING *os=NULL;
-
-	EVP_MD_CTX_init(&ctx_tmp);
-	i=OBJ_obj2nid(p7->type);
-	p7->state=PKCS7_S_HEADER;
-
-	switch (i)
-		{
-	case NID_pkcs7_data:
-		os = p7->d.data;
-		break;
-	case NID_pkcs7_signedAndEnveloped:
-		/* XXXXXXXXXXXXXXXX */
-		si_sk=p7->d.signed_and_enveloped->signer_info;
-		os = p7->d.signed_and_enveloped->enc_data->enc_data;
-		if (!os)
-			{
-			os=M_ASN1_OCTET_STRING_new();
-			if (!os)
-				{
-				PKCS7err(PKCS7_F_PKCS7_DATAFINAL,ERR_R_MALLOC_FAILURE);
-				goto err;
-				}
-			p7->d.signed_and_enveloped->enc_data->enc_data=os;
-			}
-		break;
-	case NID_pkcs7_enveloped:
-		/* XXXXXXXXXXXXXXXX */
-		os = p7->d.enveloped->enc_data->enc_data;
-		if (!os)
-			{
-			os=M_ASN1_OCTET_STRING_new();
-			if (!os)
-				{
-				PKCS7err(PKCS7_F_PKCS7_DATAFINAL,ERR_R_MALLOC_FAILURE);
-				goto err;
-				}
-			p7->d.enveloped->enc_data->enc_data=os;
-			}
-		break;
-	case NID_pkcs7_signed:
-		si_sk=p7->d.sign->signer_info;
-		os=PKCS7_get_octet_string(p7->d.sign->contents);
-		/* If detached data then the content is excluded */
-		if(PKCS7_type_is_data(p7->d.sign->contents) && p7->detached) {
-			M_ASN1_OCTET_STRING_free(os);
-			p7->d.sign->contents->d.data = NULL;
-		}
-		break;
-
-	case NID_pkcs7_digest:
-		os=PKCS7_get_octet_string(p7->d.digest->contents);
-		/* If detached data then the content is excluded */
-		if(PKCS7_type_is_data(p7->d.digest->contents) && p7->detached)
-			{
-			M_ASN1_OCTET_STRING_free(os);
-			p7->d.digest->contents->d.data = NULL;
-			}
-		break;
-
-	default:
-		PKCS7err(PKCS7_F_PKCS7_DATAFINAL,PKCS7_R_UNSUPPORTED_CONTENT_TYPE);
-	        goto err;
-		}
-
-	if (si_sk != NULL)
-		{
-		for (i=0; i<sk_PKCS7_SIGNER_INFO_num(si_sk); i++)
-			{
-			si=sk_PKCS7_SIGNER_INFO_value(si_sk,i);
-			if (si->pkey == NULL)
-				continue;
-
-			j = OBJ_obj2nid(si->digest_alg->algorithm);
-
-			btmp=bio;
-
-			btmp = PKCS7_find_digest(&mdc, btmp, j);
-
-			if (btmp == NULL)
-				goto err;
-
-			/* We now have the EVP_MD_CTX, lets do the
-			 * signing. */
-			if (!EVP_MD_CTX_copy_ex(&ctx_tmp,mdc))
-				goto err;
-
-			sk=si->auth_attr;
-
-			/* If there are attributes, we add the digest
-			 * attribute and only sign the attributes */
-			if (sk_X509_ATTRIBUTE_num(sk) > 0)
-				{
-				if (!do_pkcs7_signed_attrib(si, &ctx_tmp))
-					goto err;
-				}
-			else
-				{
-				unsigned char *abuf = NULL;
-				unsigned int abuflen;
-				abuflen = EVP_PKEY_size(si->pkey);
-				abuf = OPENSSL_malloc(abuflen);
-				if (!abuf)
-					goto err;
-
-				if (!EVP_SignFinal(&ctx_tmp, abuf, &abuflen,
-							si->pkey))
-					{
-					PKCS7err(PKCS7_F_PKCS7_DATAFINAL,
-							ERR_R_EVP_LIB);
-					goto err;
-					}
-				ASN1_STRING_set0(si->enc_digest, abuf, abuflen);
-				}
-			}
-		}
-	else if (i == NID_pkcs7_digest)
-		{
-		unsigned char md_data[EVP_MAX_MD_SIZE];
-		unsigned int md_len;
-		if (!PKCS7_find_digest(&mdc, bio,
-				OBJ_obj2nid(p7->d.digest->md->algorithm)))
-			goto err;
-		if (!EVP_DigestFinal_ex(mdc,md_data,&md_len))
-			goto err;
-		M_ASN1_OCTET_STRING_set(p7->d.digest->digest, md_data, md_len);
-		}
-
-	if (!PKCS7_is_detached(p7) && !(os->flags & ASN1_STRING_FLAG_NDEF))
-		{
-		char *cont;
-		long contlen;
-		btmp=BIO_find_type(bio,BIO_TYPE_MEM);
-		if (btmp == NULL)
-			{
-			PKCS7err(PKCS7_F_PKCS7_DATAFINAL,PKCS7_R_UNABLE_TO_FIND_MEM_BIO);
-			goto err;
-			}
-		contlen = BIO_get_mem_data(btmp, &cont);
-		/* Mark the BIO read only then we can use its copy of the data
-		 * instead of making an extra copy.
-		 */
-		BIO_set_flags(btmp, BIO_FLAGS_MEM_RDONLY);
-		BIO_set_mem_eof_return(btmp, 0);
-		ASN1_STRING_set0(os, (unsigned char *)cont, contlen);
-		}
-	ret=1;
-err:
-	EVP_MD_CTX_cleanup(&ctx_tmp);
-	return(ret);
-	}
-
-int PKCS7_SIGNER_INFO_sign(PKCS7_SIGNER_INFO *si)
-	{
-	EVP_MD_CTX mctx;
-	EVP_PKEY_CTX *pctx;
-	unsigned char *abuf = NULL;
-	int alen;
-	size_t siglen;
-	const EVP_MD *md = NULL;
-
-	md = EVP_get_digestbyobj(si->digest_alg->algorithm);
-	if (md == NULL)
-		return 0;
-
-	EVP_MD_CTX_init(&mctx);
-	if (EVP_DigestSignInit(&mctx, &pctx, md,NULL, si->pkey) <= 0)
-		goto err;
-
-	if (EVP_PKEY_CTX_ctrl(pctx, -1, EVP_PKEY_OP_SIGN,
-				EVP_PKEY_CTRL_PKCS7_SIGN, 0, si) <= 0)
-		{
-		PKCS7err(PKCS7_F_PKCS7_SIGNER_INFO_SIGN, PKCS7_R_CTRL_ERROR);
-		goto err;
-		}
-
-	alen = ASN1_item_i2d((ASN1_VALUE *)si->auth_attr,&abuf,
-				ASN1_ITEM_rptr(PKCS7_ATTR_SIGN));
-	if(!abuf)
-		goto err;
-	if (EVP_DigestSignUpdate(&mctx,abuf,alen) <= 0)
-		goto err;
-	OPENSSL_free(abuf);
-	abuf = NULL;
-	if (EVP_DigestSignFinal(&mctx, NULL, &siglen) <= 0)
-		goto err;
-	abuf = OPENSSL_malloc(siglen);
-	if(!abuf)
-		goto err;
-	if (EVP_DigestSignFinal(&mctx, abuf, &siglen) <= 0)
-		goto err;
-
-	if (EVP_PKEY_CTX_ctrl(pctx, -1, EVP_PKEY_OP_SIGN,
-				EVP_PKEY_CTRL_PKCS7_SIGN, 1, si) <= 0)
-		{
-		PKCS7err(PKCS7_F_PKCS7_SIGNER_INFO_SIGN, PKCS7_R_CTRL_ERROR);
-		goto err;
-		}
-
-	EVP_MD_CTX_cleanup(&mctx);
-
-	ASN1_STRING_set0(si->enc_digest, abuf, siglen);
-
-	return 1;
-
-	err:
-	if (abuf)
-		OPENSSL_free(abuf);
-	EVP_MD_CTX_cleanup(&mctx);
-	return 0;
-
-	}
-
-int PKCS7_dataVerify(X509_STORE *cert_store, X509_STORE_CTX *ctx, BIO *bio,
-	     PKCS7 *p7, PKCS7_SIGNER_INFO *si)
-	{
-	PKCS7_ISSUER_AND_SERIAL *ias;
-	int ret=0,i;
-	STACK_OF(X509) *cert;
-	X509 *x509;
-
-	if (PKCS7_type_is_signed(p7))
-		{
-		cert=p7->d.sign->cert;
-		}
-	else if (PKCS7_type_is_signedAndEnveloped(p7))
-		{
-		cert=p7->d.signed_and_enveloped->cert;
-		}
-	else
-		{
-		PKCS7err(PKCS7_F_PKCS7_DATAVERIFY,PKCS7_R_WRONG_PKCS7_TYPE);
-		goto err;
-		}
-	/* XXXXXXXXXXXXXXXXXXXXXXX */
-	ias=si->issuer_and_serial;
-
-	x509=X509_find_by_issuer_and_serial(cert,ias->issuer,ias->serial);
-
-	/* were we able to find the cert in passed to us */
-	if (x509 == NULL)
-		{
-		PKCS7err(PKCS7_F_PKCS7_DATAVERIFY,PKCS7_R_UNABLE_TO_FIND_CERTIFICATE);
-		goto err;
-		}
-
-	/* Lets verify */
-	if(!X509_STORE_CTX_init(ctx,cert_store,x509,cert))
-		{
-		PKCS7err(PKCS7_F_PKCS7_DATAVERIFY,ERR_R_X509_LIB);
-		goto err;
-		}
-	X509_STORE_CTX_set_purpose(ctx, X509_PURPOSE_SMIME_SIGN);
-	i=X509_verify_cert(ctx);
-	if (i <= 0) 
-		{
-		PKCS7err(PKCS7_F_PKCS7_DATAVERIFY,ERR_R_X509_LIB);
-		X509_STORE_CTX_cleanup(ctx);
-		goto err;
-		}
-	X509_STORE_CTX_cleanup(ctx);
-
-	return PKCS7_signatureVerify(bio, p7, si, x509);
-	err:
-	return ret;
-	}
-
-int PKCS7_signatureVerify(BIO *bio, PKCS7 *p7, PKCS7_SIGNER_INFO *si,
-								X509 *x509)
-	{
-	ASN1_OCTET_STRING *os;
-	EVP_MD_CTX mdc_tmp,*mdc;
-	int ret=0,i;
-	int md_type;
-	STACK_OF(X509_ATTRIBUTE) *sk;
-	BIO *btmp;
-	EVP_PKEY *pkey;
-
-	EVP_MD_CTX_init(&mdc_tmp);
-
-	if (!PKCS7_type_is_signed(p7) && 
-				!PKCS7_type_is_signedAndEnveloped(p7)) {
-		PKCS7err(PKCS7_F_PKCS7_SIGNATUREVERIFY,
-						PKCS7_R_WRONG_PKCS7_TYPE);
-		goto err;
-	}
-
-	md_type=OBJ_obj2nid(si->digest_alg->algorithm);
-
-	btmp=bio;
-	for (;;)
-		{
-		if ((btmp == NULL) ||
-			((btmp=BIO_find_type(btmp,BIO_TYPE_MD)) == NULL))
-			{
-			PKCS7err(PKCS7_F_PKCS7_SIGNATUREVERIFY,
-					PKCS7_R_UNABLE_TO_FIND_MESSAGE_DIGEST);
-			goto err;
-			}
-		BIO_get_md_ctx(btmp,&mdc);
-		if (mdc == NULL)
-			{
-			PKCS7err(PKCS7_F_PKCS7_SIGNATUREVERIFY,
-							ERR_R_INTERNAL_ERROR);
-			goto err;
-			}
-		if (EVP_MD_CTX_type(mdc) == md_type)
-			break;
-		/* Workaround for some broken clients that put the signature
-		 * OID instead of the digest OID in digest_alg->algorithm
-		 */
-		if (EVP_MD_pkey_type(EVP_MD_CTX_md(mdc)) == md_type)
-			break;
-		btmp=BIO_next(btmp);
-		}
-
-	/* mdc is the digest ctx that we want, unless there are attributes,
-	 * in which case the digest is the signed attributes */
-	if (!EVP_MD_CTX_copy_ex(&mdc_tmp,mdc))
-		goto err;
-
-	sk=si->auth_attr;
-	if ((sk != NULL) && (sk_X509_ATTRIBUTE_num(sk) != 0))
-		{
-		unsigned char md_dat[EVP_MAX_MD_SIZE], *abuf = NULL;
-                unsigned int md_len;
-		int alen;
-		ASN1_OCTET_STRING *message_digest;
-
-		if (!EVP_DigestFinal_ex(&mdc_tmp,md_dat,&md_len))
-			goto err;
-		message_digest=PKCS7_digest_from_attributes(sk);
-		if (!message_digest)
-			{
-			PKCS7err(PKCS7_F_PKCS7_SIGNATUREVERIFY,
-					PKCS7_R_UNABLE_TO_FIND_MESSAGE_DIGEST);
-			goto err;
-			}
-		if ((message_digest->length != (int)md_len) ||
-			(memcmp(message_digest->data,md_dat,md_len)))
-			{
-#if 0
-{
-int ii;
-for (ii=0; ii<message_digest->length; ii++)
-	printf("%02X",message_digest->data[ii]); printf(" sent\n");
-for (ii=0; ii<md_len; ii++) printf("%02X",md_dat[ii]); printf(" calc\n");
-}
-#endif
-			PKCS7err(PKCS7_F_PKCS7_SIGNATUREVERIFY,
-							PKCS7_R_DIGEST_FAILURE);
-			ret= -1;
-			goto err;
-			}
-
-		if (!EVP_VerifyInit_ex(&mdc_tmp,EVP_get_digestbynid(md_type), NULL))
-			goto err;
-
-		alen = ASN1_item_i2d((ASN1_VALUE *)sk, &abuf,
-						ASN1_ITEM_rptr(PKCS7_ATTR_VERIFY));
-		if (alen <= 0) 
-			{
-			PKCS7err(PKCS7_F_PKCS7_SIGNATUREVERIFY,ERR_R_ASN1_LIB);
-			ret = -1;
-			goto err;
-			}
-		if (!EVP_VerifyUpdate(&mdc_tmp, abuf, alen))
-			goto err;
-
-		OPENSSL_free(abuf);
-		}
-
-	os=si->enc_digest;
-	pkey = X509_get_pubkey(x509);
-	if (!pkey)
-		{
-		ret = -1;
-		goto err;
-		}
-
-	i=EVP_VerifyFinal(&mdc_tmp,os->data,os->length, pkey);
-	EVP_PKEY_free(pkey);
-	if (i <= 0)
-		{
-		PKCS7err(PKCS7_F_PKCS7_SIGNATUREVERIFY,
-						PKCS7_R_SIGNATURE_FAILURE);
-		ret= -1;
-		goto err;
-		}
-	else
-		ret=1;
-err:
-	EVP_MD_CTX_cleanup(&mdc_tmp);
-	return(ret);
-	}
-
-PKCS7_ISSUER_AND_SERIAL *PKCS7_get_issuer_and_serial(PKCS7 *p7, int idx)
-	{
-	STACK_OF(PKCS7_RECIP_INFO) *rsk;
-	PKCS7_RECIP_INFO *ri;
-	int i;
-
-	i=OBJ_obj2nid(p7->type);
-	if (i != NID_pkcs7_signedAndEnveloped)
-		return NULL;
-	if (p7->d.signed_and_enveloped == NULL)
-		return NULL;
-	rsk=p7->d.signed_and_enveloped->recipientinfo;
-	if (rsk == NULL)
-		return NULL;
-	ri=sk_PKCS7_RECIP_INFO_value(rsk,0);
-	if (sk_PKCS7_RECIP_INFO_num(rsk) <= idx) return(NULL);
-	ri=sk_PKCS7_RECIP_INFO_value(rsk,idx);
-	return(ri->issuer_and_serial);
-	}
-
-ASN1_TYPE *PKCS7_get_signed_attribute(PKCS7_SIGNER_INFO *si, int nid)
-	{
-	return(get_attribute(si->auth_attr,nid));
-	}
-
-ASN1_TYPE *PKCS7_get_attribute(PKCS7_SIGNER_INFO *si, int nid)
-	{
-	return(get_attribute(si->unauth_attr,nid));
-	}
-
-static ASN1_TYPE *get_attribute(STACK_OF(X509_ATTRIBUTE) *sk, int nid)
-	{
-	int i;
-	X509_ATTRIBUTE *xa;
-	ASN1_OBJECT *o;
-
-	o=OBJ_nid2obj(nid);
-	if (!o || !sk) return(NULL);
-	for (i=0; i<sk_X509_ATTRIBUTE_num(sk); i++)
-		{
-		xa=sk_X509_ATTRIBUTE_value(sk,i);
-		if (OBJ_cmp(xa->object,o) == 0)
-			{
-			if (!xa->single && sk_ASN1_TYPE_num(xa->value.set))
-				return(sk_ASN1_TYPE_value(xa->value.set,0));
-			else
-				return(NULL);
-			}
-		}
-	return(NULL);
-	}
-
-ASN1_OCTET_STRING *PKCS7_digest_from_attributes(STACK_OF(X509_ATTRIBUTE) *sk)
-{
-	ASN1_TYPE *astype;
-	if(!(astype = get_attribute(sk, NID_pkcs9_messageDigest))) return NULL;
-	return astype->value.octet_string;
-}
-
-int PKCS7_set_signed_attributes(PKCS7_SIGNER_INFO *p7si,
-				STACK_OF(X509_ATTRIBUTE) *sk)
-	{
-	int i;
-
-	if (p7si->auth_attr != NULL)
-		sk_X509_ATTRIBUTE_pop_free(p7si->auth_attr,X509_ATTRIBUTE_free);
-	p7si->auth_attr=sk_X509_ATTRIBUTE_dup(sk);
-	if (p7si->auth_attr == NULL)
-		return 0;
-	for (i=0; i<sk_X509_ATTRIBUTE_num(sk); i++)
-		{
-		if ((sk_X509_ATTRIBUTE_set(p7si->auth_attr,i,
-			X509_ATTRIBUTE_dup(sk_X509_ATTRIBUTE_value(sk,i))))
-		    == NULL)
-			return(0);
-		}
-	return(1);
-	}
-
-int PKCS7_set_attributes(PKCS7_SIGNER_INFO *p7si, STACK_OF(X509_ATTRIBUTE) *sk)
-	{
-	int i;
-
-	if (p7si->unauth_attr != NULL)
-		sk_X509_ATTRIBUTE_pop_free(p7si->unauth_attr,
-					   X509_ATTRIBUTE_free);
-	p7si->unauth_attr=sk_X509_ATTRIBUTE_dup(sk);
-	if (p7si->unauth_attr == NULL)
-		return 0;
-	for (i=0; i<sk_X509_ATTRIBUTE_num(sk); i++)
-		{
-		if ((sk_X509_ATTRIBUTE_set(p7si->unauth_attr,i,
-                        X509_ATTRIBUTE_dup(sk_X509_ATTRIBUTE_value(sk,i))))
-		    == NULL)
-			return(0);
-		}
-	return(1);
-	}
-
-int PKCS7_add_signed_attribute(PKCS7_SIGNER_INFO *p7si, int nid, int atrtype,
-	     void *value)
-	{
-	return(add_attribute(&(p7si->auth_attr),nid,atrtype,value));
-	}
-
-int PKCS7_add_attribute(PKCS7_SIGNER_INFO *p7si, int nid, int atrtype,
-	     void *value)
-	{
-	return(add_attribute(&(p7si->unauth_attr),nid,atrtype,value));
-	}
-
-static int add_attribute(STACK_OF(X509_ATTRIBUTE) **sk, int nid, int atrtype,
-			 void *value)
-	{
-	X509_ATTRIBUTE *attr=NULL;
-
-	if (*sk == NULL)
-		{
-		*sk = sk_X509_ATTRIBUTE_new_null();
-		if (*sk == NULL)
-			return 0;	
-new_attrib:
-		if (!(attr=X509_ATTRIBUTE_create(nid,atrtype,value)))
-			return 0;
-		if (!sk_X509_ATTRIBUTE_push(*sk,attr))
-			{
-			X509_ATTRIBUTE_free(attr);
-			return 0;
-			}
-		}
-	else
-		{
-		int i;
-
-		for (i=0; i<sk_X509_ATTRIBUTE_num(*sk); i++)
-			{
-			attr=sk_X509_ATTRIBUTE_value(*sk,i);
-			if (OBJ_obj2nid(attr->object) == nid)
-				{
-				X509_ATTRIBUTE_free(attr);
-				attr=X509_ATTRIBUTE_create(nid,atrtype,value);
-				if (attr == NULL)
-					return 0;
-				if (!sk_X509_ATTRIBUTE_set(*sk,i,attr))
-					{
-					X509_ATTRIBUTE_free(attr);
-					return 0;
-					}
-				goto end;
-				}
-			}
-		goto new_attrib;
-		}
-end:
-	return(1);
-	}
-