Initial import

1 files changed, 587 insertions, 0 deletions

diff --git a/openssl/crypto/pkcs7/pk7_smime.c b/openssl/crypto/pkcs7/pk7_smime.c
new file mode 100644
index 00000000..86742d0d
--- /dev/null
+++ b/openssl/crypto/pkcs7/pk7_smime.c
@@ -0,0 +1,587 @@
+/* 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);
+		BIO_free_all(bread);
+		return ret;
+	} else {
+		for(;;) {
+			i = BIO_read(tmpmem, buf, sizeof(buf));
+			if(i <= 0) break;
+			BIO_write(data, buf, i);
+		}
+		BIO_free_all(tmpmem);
+		return 1;
+	}
+}