Delete bundled copy of OpenSSL and replace with README.

openssl/crypto/pkcs7/pk7_smime.c

Index: openssl/crypto/pkcs7/pk7_smime.c
diff --git a/openssl/crypto/pkcs7/pk7_smime.c b/openssl/crypto/pkcs7/pk7_smime.c
deleted file mode 100644
index a5104f8d05af7d826c5dd4c01e52ae3b9294499e..0000000000000000000000000000000000000000
--- a/openssl/crypto/pkcs7/pk7_smime.c
+++ /dev/null
@@ -1,606 +0,0 @@
-/* pk7_smime.c */
-/* Written by Dr Stephen N Henson (steve@openssl.org) for the OpenSSL
- * project.
- */
-/* ====================================================================
- * Copyright (c) 1999-2004 The OpenSSL Project.  All rights reserved.
- *
- * Redistribution and use in source and binary forms, with or without
- * modification, are permitted provided that the following conditions
- * are met:
- *
- * 1. Redistributions of source code must retain the above copyright
- *    notice, this list of conditions and the following disclaimer. 
- *
- * 2. Redistributions in binary form must reproduce the above copyright
- *    notice, this list of conditions and the following disclaimer in
- *    the documentation and/or other materials provided with the
- *    distribution.
- *
- * 3. All advertising materials mentioning features or use of this
- *    software must display the following acknowledgment:
- *    "This product includes software developed by the OpenSSL Project
- *    for use in the OpenSSL Toolkit. (http://www.OpenSSL.org/)"
- *
- * 4. The names "OpenSSL Toolkit" and "OpenSSL Project" must not be used to
- *    endorse or promote products derived from this software without
- *    prior written permission. For written permission, please contact
- *    licensing@OpenSSL.org.
- *
- * 5. Products derived from this software may not be called "OpenSSL"
- *    nor may "OpenSSL" appear in their names without prior written
- *    permission of the OpenSSL Project.
- *
- * 6. Redistributions of any form whatsoever must retain the following
- *    acknowledgment:
- *    "This product includes software developed by the OpenSSL Project
- *    for use in the OpenSSL Toolkit (http://www.OpenSSL.org/)"
- *
- * THIS SOFTWARE IS PROVIDED BY THE OpenSSL PROJECT ``AS IS'' AND ANY
- * EXPRESSED OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
- * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
- * PURPOSE ARE DISCLAIMED.  IN NO EVENT SHALL THE OpenSSL PROJECT OR
- * ITS CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
- * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
- * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
- * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
- * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT,
- * STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
- * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED
- * OF THE POSSIBILITY OF SUCH DAMAGE.
- * ====================================================================
- *
- * This product includes cryptographic software written by Eric Young
- * (eay@cryptsoft.com).  This product includes software written by Tim
- * Hudson (tjh@cryptsoft.com).
- *
- */
-
-/* Simple PKCS#7 processing functions */
-
-#include <stdio.h>
-#include "cryptlib.h"
-#include <openssl/x509.h>
-#include <openssl/x509v3.h>
-
-static int pkcs7_copy_existing_digest(PKCS7 *p7, PKCS7_SIGNER_INFO *si);
-
-PKCS7 *PKCS7_sign(X509 *signcert, EVP_PKEY *pkey, STACK_OF(X509) *certs,
-		  BIO *data, int flags)
-{
-	PKCS7 *p7;
-	int i;
-
-	if(!(p7 = PKCS7_new()))
-		{
-		PKCS7err(PKCS7_F_PKCS7_SIGN,ERR_R_MALLOC_FAILURE);
-		return NULL;
-		}
-
-	if (!PKCS7_set_type(p7, NID_pkcs7_signed))
-		goto err;
-
-	if (!PKCS7_content_new(p7, NID_pkcs7_data))
-		goto err;
-
-    	if (pkey && !PKCS7_sign_add_signer(p7, signcert, pkey, NULL, flags))
-		{
-		PKCS7err(PKCS7_F_PKCS7_SIGN,PKCS7_R_PKCS7_ADD_SIGNER_ERROR);
-		goto err;
-		}
-
-	if(!(flags & PKCS7_NOCERTS))
-		{
-		for(i = 0; i < sk_X509_num(certs); i++)
-			{
-			if (!PKCS7_add_certificate(p7, sk_X509_value(certs, i)))
-				goto err;
-			}
-		}
-
-	if(flags & PKCS7_DETACHED)
-		PKCS7_set_detached(p7, 1);
-
-	if (flags & (PKCS7_STREAM|PKCS7_PARTIAL))
-		return p7;
-
-	if (PKCS7_final(p7, data, flags))
-		return p7;
-
-	err:
-	PKCS7_free(p7);
-	return NULL;
-}
-
-int PKCS7_final(PKCS7 *p7, BIO *data, int flags)
-	{
-	BIO *p7bio;
-	int ret = 0;
-	if (!(p7bio = PKCS7_dataInit(p7, NULL)))
-		{
-		PKCS7err(PKCS7_F_PKCS7_FINAL,ERR_R_MALLOC_FAILURE);
-		return 0;
-		}
-
-	SMIME_crlf_copy(data, p7bio, flags);
-
-	(void)BIO_flush(p7bio);
-
-
-        if (!PKCS7_dataFinal(p7,p7bio))
-		{
-		PKCS7err(PKCS7_F_PKCS7_FINAL,PKCS7_R_PKCS7_DATASIGN);
-		goto err;
-		}
-
-	ret = 1;
-
-	err:
-	BIO_free_all(p7bio);
-
-	return ret;
-
-	}
-
-/* Check to see if a cipher exists and if so add S/MIME capabilities */
-
-static int add_cipher_smcap(STACK_OF(X509_ALGOR) *sk, int nid, int arg)
-	{
-	if (EVP_get_cipherbynid(nid))
-		return PKCS7_simple_smimecap(sk, nid, arg);
-	return 1;
-	}
-
-static int add_digest_smcap(STACK_OF(X509_ALGOR) *sk, int nid, int arg)
-	{
-	if (EVP_get_digestbynid(nid))
-		return PKCS7_simple_smimecap(sk, nid, arg);
-	return 1;
-	}
-
-PKCS7_SIGNER_INFO *PKCS7_sign_add_signer(PKCS7 *p7, X509 *signcert,
-					EVP_PKEY *pkey, const EVP_MD *md,
-					int flags)
-	{
-	PKCS7_SIGNER_INFO *si = NULL;
-	STACK_OF(X509_ALGOR) *smcap = NULL;
-	if(!X509_check_private_key(signcert, pkey))
-		{
-		PKCS7err(PKCS7_F_PKCS7_SIGN_ADD_SIGNER,
-			PKCS7_R_PRIVATE_KEY_DOES_NOT_MATCH_CERTIFICATE);
-                return NULL;
-		}
-
-    	if (!(si = PKCS7_add_signature(p7,signcert,pkey, md)))
-		{
-		PKCS7err(PKCS7_F_PKCS7_SIGN_ADD_SIGNER,
-				PKCS7_R_PKCS7_ADD_SIGNATURE_ERROR);
-		return NULL;
-		}
-
-	if(!(flags & PKCS7_NOCERTS))
-		{
-		if (!PKCS7_add_certificate(p7, signcert))
-			goto err;
-		}
-
-	if(!(flags & PKCS7_NOATTR))
-		{
-		if (!PKCS7_add_attrib_content_type(si, NULL))
-			goto err;
-		/* Add SMIMECapabilities */
-		if(!(flags & PKCS7_NOSMIMECAP))
-			{
-			if(!(smcap = sk_X509_ALGOR_new_null()))
-				{
-				PKCS7err(PKCS7_F_PKCS7_SIGN_ADD_SIGNER,
-					ERR_R_MALLOC_FAILURE);
-				goto err;
-				}
-			if (!add_cipher_smcap(smcap, NID_aes_256_cbc, -1)
-			|| !add_digest_smcap(smcap, NID_id_GostR3411_94, -1)
-			|| !add_cipher_smcap(smcap, NID_id_Gost28147_89, -1)
-				|| !add_cipher_smcap(smcap, NID_aes_192_cbc, -1)
-				|| !add_cipher_smcap(smcap, NID_aes_128_cbc, -1)
-			|| !add_cipher_smcap(smcap, NID_des_ede3_cbc, -1)
-				|| !add_cipher_smcap(smcap, NID_rc2_cbc, 128)
-				|| !add_cipher_smcap(smcap, NID_rc2_cbc, 64)
-				|| !add_cipher_smcap(smcap, NID_des_cbc, -1)
-				|| !add_cipher_smcap(smcap, NID_rc2_cbc, 40)
-				|| !PKCS7_add_attrib_smimecap (si, smcap))
-				goto err;
-			sk_X509_ALGOR_pop_free(smcap, X509_ALGOR_free);
-			smcap = NULL;
-			}
-		if (flags & PKCS7_REUSE_DIGEST)
-			{
-			if (!pkcs7_copy_existing_digest(p7, si))
-				goto err;
-			if (!(flags & PKCS7_PARTIAL) &&
-					!PKCS7_SIGNER_INFO_sign(si))
-				goto err;
-			}
-		}
-	return si;
-	err:
-	if (smcap)
-		sk_X509_ALGOR_pop_free(smcap, X509_ALGOR_free);
-	return NULL;
-	}
-
-/* Search for a digest matching SignerInfo digest type and if found
- * copy across.
- */
-
-static int pkcs7_copy_existing_digest(PKCS7 *p7, PKCS7_SIGNER_INFO *si)
-	{
-	int i;
-	STACK_OF(PKCS7_SIGNER_INFO) *sinfos;
-	PKCS7_SIGNER_INFO *sitmp;
-	ASN1_OCTET_STRING *osdig = NULL;
-	sinfos = PKCS7_get_signer_info(p7);
-	for (i = 0; i < sk_PKCS7_SIGNER_INFO_num(sinfos); i++)
-		{
-		sitmp = sk_PKCS7_SIGNER_INFO_value(sinfos, i);
-		if (si == sitmp)
-			break;
-		if (sk_X509_ATTRIBUTE_num(sitmp->auth_attr) <= 0)
-			continue;
-		if (!OBJ_cmp(si->digest_alg->algorithm,
-				sitmp->digest_alg->algorithm))
-			{
-			osdig = PKCS7_digest_from_attributes(sitmp->auth_attr);
-			break;
-			}
-
-		}
-
-	if (osdig)
-		return PKCS7_add1_attrib_digest(si, osdig->data, osdig->length);
-
-	PKCS7err(PKCS7_F_PKCS7_COPY_EXISTING_DIGEST,
-			PKCS7_R_NO_MATCHING_DIGEST_TYPE_FOUND);
-	return 0;
-	}
-
-int PKCS7_verify(PKCS7 *p7, STACK_OF(X509) *certs, X509_STORE *store,
-					BIO *indata, BIO *out, int flags)
-{
-	STACK_OF(X509) *signers;
-	X509 *signer;
-	STACK_OF(PKCS7_SIGNER_INFO) *sinfos;
-	PKCS7_SIGNER_INFO *si;
-	X509_STORE_CTX cert_ctx;
-	char buf[4096];
-	int i, j=0, k, ret = 0;
-	BIO *p7bio;
-	BIO *tmpin, *tmpout;
-
-	if(!p7) {
-		PKCS7err(PKCS7_F_PKCS7_VERIFY,PKCS7_R_INVALID_NULL_POINTER);
-		return 0;
-	}
-
-	if(!PKCS7_type_is_signed(p7)) {
-		PKCS7err(PKCS7_F_PKCS7_VERIFY,PKCS7_R_WRONG_CONTENT_TYPE);
-		return 0;
-	}
-
-	/* Check for no data and no content: no data to verify signature */
-	if(PKCS7_get_detached(p7) && !indata) {
-		PKCS7err(PKCS7_F_PKCS7_VERIFY,PKCS7_R_NO_CONTENT);
-		return 0;
-	}
-#if 0
-	/* NB: this test commented out because some versions of Netscape
-	 * illegally include zero length content when signing data.
-	 */
-
-	/* Check for data and content: two sets of data */
-	if(!PKCS7_get_detached(p7) && indata) {
-				PKCS7err(PKCS7_F_PKCS7_VERIFY,PKCS7_R_CONTENT_AND_DATA_PRESENT);
-		return 0;
-	}
-#endif
-
-	sinfos = PKCS7_get_signer_info(p7);
-
-	if(!sinfos || !sk_PKCS7_SIGNER_INFO_num(sinfos)) {
-		PKCS7err(PKCS7_F_PKCS7_VERIFY,PKCS7_R_NO_SIGNATURES_ON_DATA);
-		return 0;
-	}
-
-
-	signers = PKCS7_get0_signers(p7, certs, flags);
-
-	if(!signers) return 0;
-
-	/* Now verify the certificates */
-
-	if (!(flags & PKCS7_NOVERIFY)) for (k = 0; k < sk_X509_num(signers); k++) {
-		signer = sk_X509_value (signers, k);
-		if (!(flags & PKCS7_NOCHAIN)) {
-			if(!X509_STORE_CTX_init(&cert_ctx, store, signer,
-							p7->d.sign->cert))
-				{
-				PKCS7err(PKCS7_F_PKCS7_VERIFY,ERR_R_X509_LIB);
-				sk_X509_free(signers);
-				return 0;
-				}
-			X509_STORE_CTX_set_default(&cert_ctx, "smime_sign");
-		} else if(!X509_STORE_CTX_init (&cert_ctx, store, signer, NULL)) {
-			PKCS7err(PKCS7_F_PKCS7_VERIFY,ERR_R_X509_LIB);
-			sk_X509_free(signers);
-			return 0;
-		}
-		if (!(flags & PKCS7_NOCRL))
-			X509_STORE_CTX_set0_crls(&cert_ctx, p7->d.sign->crl);
-		i = X509_verify_cert(&cert_ctx);
-		if (i <= 0) j = X509_STORE_CTX_get_error(&cert_ctx);
-		X509_STORE_CTX_cleanup(&cert_ctx);
-		if (i <= 0) {
-			PKCS7err(PKCS7_F_PKCS7_VERIFY,PKCS7_R_CERTIFICATE_VERIFY_ERROR);
-			ERR_add_error_data(2, "Verify error:",
-					 X509_verify_cert_error_string(j));
-			sk_X509_free(signers);
-			return 0;
-		}
-		/* Check for revocation status here */
-	}
-
-	/* Performance optimization: if the content is a memory BIO then
-	 * store its contents in a temporary read only memory BIO. This
-	 * avoids potentially large numbers of slow copies of data which will
-	 * occur when reading from a read write memory BIO when signatures
-	 * are calculated.
-	 */
-
-	if (indata && (BIO_method_type(indata) == BIO_TYPE_MEM))
-		{
-		char *ptr;
-		long len;
-		len = BIO_get_mem_data(indata, &ptr);
-		tmpin = BIO_new_mem_buf(ptr, len);
-		if (tmpin == NULL)
-			{
-			PKCS7err(PKCS7_F_PKCS7_VERIFY,ERR_R_MALLOC_FAILURE);
-			return 0;
-			}
-		}
-	else
-		tmpin = indata;
-		
-
-	if (!(p7bio=PKCS7_dataInit(p7,tmpin)))
-		goto err;
-
-	if(flags & PKCS7_TEXT) {
-		if(!(tmpout = BIO_new(BIO_s_mem()))) {
-			PKCS7err(PKCS7_F_PKCS7_VERIFY,ERR_R_MALLOC_FAILURE);
-			goto err;
-		}
-		BIO_set_mem_eof_return(tmpout, 0);
-	} else tmpout = out;
-
-	/* We now have to 'read' from p7bio to calculate digests etc. */
-	for (;;)
-	{
-		i=BIO_read(p7bio,buf,sizeof(buf));
-		if (i <= 0) break;
-		if (tmpout) BIO_write(tmpout, buf, i);
-	}
-
-	if(flags & PKCS7_TEXT) {
-		if(!SMIME_text(tmpout, out)) {
-			PKCS7err(PKCS7_F_PKCS7_VERIFY,PKCS7_R_SMIME_TEXT_ERROR);
-			BIO_free(tmpout);
-			goto err;
-		}
-		BIO_free(tmpout);
-	}
-
-	/* Now Verify All Signatures */
-	if (!(flags & PKCS7_NOSIGS))
-	    for (i=0; i<sk_PKCS7_SIGNER_INFO_num(sinfos); i++)
-		{
-		si=sk_PKCS7_SIGNER_INFO_value(sinfos,i);
-		signer = sk_X509_value (signers, i);
-		j=PKCS7_signatureVerify(p7bio,p7,si, signer);
-		if (j <= 0) {
-			PKCS7err(PKCS7_F_PKCS7_VERIFY,PKCS7_R_SIGNATURE_FAILURE);
-			goto err;
-		}
-	}
-
-	ret = 1;
-
-	err:
-	
-	if (tmpin == indata)
-		{
-		if (indata) BIO_pop(p7bio);
-		}
-	BIO_free_all(p7bio);
-
-	sk_X509_free(signers);
-
-	return ret;
-}
-
-STACK_OF(X509) *PKCS7_get0_signers(PKCS7 *p7, STACK_OF(X509) *certs, int flags)
-{
-	STACK_OF(X509) *signers;
-	STACK_OF(PKCS7_SIGNER_INFO) *sinfos;
-	PKCS7_SIGNER_INFO *si;
-	PKCS7_ISSUER_AND_SERIAL *ias;
-	X509 *signer;
-	int i;
-
-	if(!p7) {
-		PKCS7err(PKCS7_F_PKCS7_GET0_SIGNERS,PKCS7_R_INVALID_NULL_POINTER);
-		return NULL;
-	}
-
-	if(!PKCS7_type_is_signed(p7)) {
-		PKCS7err(PKCS7_F_PKCS7_GET0_SIGNERS,PKCS7_R_WRONG_CONTENT_TYPE);
-		return NULL;
-	}
-
-	/* Collect all the signers together */
-
-	sinfos = PKCS7_get_signer_info(p7);
-
-	if(sk_PKCS7_SIGNER_INFO_num(sinfos) <= 0) {
-		PKCS7err(PKCS7_F_PKCS7_GET0_SIGNERS,PKCS7_R_NO_SIGNERS);
-		return 0;
-	}
-
-	if(!(signers = sk_X509_new_null())) {
-		PKCS7err(PKCS7_F_PKCS7_GET0_SIGNERS,ERR_R_MALLOC_FAILURE);
-		return NULL;
-	}
-
-	for (i = 0; i < sk_PKCS7_SIGNER_INFO_num(sinfos); i++)
-	{
-	    si = sk_PKCS7_SIGNER_INFO_value(sinfos, i);
-	    ias = si->issuer_and_serial;
-	    signer = NULL;
-		/* If any certificates passed they take priority */
-	    if (certs) signer = X509_find_by_issuer_and_serial (certs,
-					 	ias->issuer, ias->serial);
-	    if (!signer && !(flags & PKCS7_NOINTERN)
-			&& p7->d.sign->cert) signer =
-		              X509_find_by_issuer_and_serial (p7->d.sign->cert,
-					      	ias->issuer, ias->serial);
-	    if (!signer) {
-			PKCS7err(PKCS7_F_PKCS7_GET0_SIGNERS,PKCS7_R_SIGNER_CERTIFICATE_NOT_FOUND);
-			sk_X509_free(signers);
-			return 0;
-	    }
-
-	    if (!sk_X509_push(signers, signer)) {
-		sk_X509_free(signers);
-		return NULL;
-	    }
-	}
-	return signers;
-}
-
-
-/* Build a complete PKCS#7 enveloped data */
-
-PKCS7 *PKCS7_encrypt(STACK_OF(X509) *certs, BIO *in, const EVP_CIPHER *cipher,
-								int flags)
-{
-	PKCS7 *p7;
-	BIO *p7bio = NULL;
-	int i;
-	X509 *x509;
-	if(!(p7 = PKCS7_new())) {
-		PKCS7err(PKCS7_F_PKCS7_ENCRYPT,ERR_R_MALLOC_FAILURE);
-		return NULL;
-	}
-
-	if (!PKCS7_set_type(p7, NID_pkcs7_enveloped))
-		goto err;
-	if (!PKCS7_set_cipher(p7, cipher)) {
-		PKCS7err(PKCS7_F_PKCS7_ENCRYPT,PKCS7_R_ERROR_SETTING_CIPHER);
-		goto err;
-	}
-
-	for(i = 0; i < sk_X509_num(certs); i++) {
-		x509 = sk_X509_value(certs, i);
-		if(!PKCS7_add_recipient(p7, x509)) {
-			PKCS7err(PKCS7_F_PKCS7_ENCRYPT,
-					PKCS7_R_ERROR_ADDING_RECIPIENT);
-			goto err;
-		}
-	}
-
-	if (flags & PKCS7_STREAM)
-		return p7;
-
-	if (PKCS7_final(p7, in, flags))
-		return p7;
-
-	err:
-
-	BIO_free_all(p7bio);
-	PKCS7_free(p7);
-	return NULL;
-
-}
-
-int PKCS7_decrypt(PKCS7 *p7, EVP_PKEY *pkey, X509 *cert, BIO *data, int flags)
-{
-	BIO *tmpmem;
-	int ret, i;
-	char buf[4096];
-
-	if(!p7) {
-		PKCS7err(PKCS7_F_PKCS7_DECRYPT,PKCS7_R_INVALID_NULL_POINTER);
-		return 0;
-	}
-
-	if(!PKCS7_type_is_enveloped(p7)) {
-		PKCS7err(PKCS7_F_PKCS7_DECRYPT,PKCS7_R_WRONG_CONTENT_TYPE);
-		return 0;
-	}
-
-	if(cert && !X509_check_private_key(cert, pkey)) {
-		PKCS7err(PKCS7_F_PKCS7_DECRYPT,
-				PKCS7_R_PRIVATE_KEY_DOES_NOT_MATCH_CERTIFICATE);
-		return 0;
-	}
-
-	if(!(tmpmem = PKCS7_dataDecode(p7, pkey, NULL, cert))) {
-		PKCS7err(PKCS7_F_PKCS7_DECRYPT, PKCS7_R_DECRYPT_ERROR);
-		return 0;
-	}
-
-	if (flags & PKCS7_TEXT) {
-		BIO *tmpbuf, *bread;
-		/* Encrypt BIOs can't do BIO_gets() so add a buffer BIO */
-		if(!(tmpbuf = BIO_new(BIO_f_buffer()))) {
-			PKCS7err(PKCS7_F_PKCS7_DECRYPT, ERR_R_MALLOC_FAILURE);
-			BIO_free_all(tmpmem);
-			return 0;
-		}
-		if(!(bread = BIO_push(tmpbuf, tmpmem))) {
-			PKCS7err(PKCS7_F_PKCS7_DECRYPT, ERR_R_MALLOC_FAILURE);
-			BIO_free_all(tmpbuf);
-			BIO_free_all(tmpmem);
-			return 0;
-		}
-		ret = SMIME_text(bread, data);
-		if (ret > 0 && BIO_method_type(tmpmem) == BIO_TYPE_CIPHER)
-			{
-			if (!BIO_get_cipher_status(tmpmem))
-				ret = 0;
-			}
-		BIO_free_all(bread);
-		return ret;
-	} else {
-		for(;;) {
-			i = BIO_read(tmpmem, buf, sizeof(buf));
-			if(i <= 0)
-				{
-				ret = 1;
-				if (BIO_method_type(tmpmem) == BIO_TYPE_CIPHER)
-					{
-					if (!BIO_get_cipher_status(tmpmem))
-						ret = 0;
-					}
-					
-				break;
-				}
-			if (BIO_write(data, buf, i) != i)
-				{
-				ret = 0;
-				break;
-				}
-		}
-		BIO_free_all(tmpmem);
-		return ret;
-	}
-}