cms.c 32.8 KB
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/* apps/cms.c */
/* Written by Dr Stephen N Henson (steve@openssl.org) for the OpenSSL
 * project.
 */
/* ====================================================================
 * Copyright (c) 2008 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.
 * ====================================================================
 */

/* CMS utility function */

#include <stdio.h>
#include <string.h>
#include "apps.h"

#ifndef OPENSSL_NO_CMS

#include <openssl/crypto.h>
#include <openssl/pem.h>
#include <openssl/err.h>
#include <openssl/x509_vfy.h>
#include <openssl/x509v3.h>
#include <openssl/cms.h>

#undef PROG
#define PROG cms_main
static int save_certs(char *signerfile, STACK_OF(X509) *signers);
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static int cms_cb(int ok, X509_STORE_CTX *ctx);
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static void receipt_request_print(BIO *out, CMS_ContentInfo *cms);
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static CMS_ReceiptRequest *make_receipt_request(STACK *rr_to, int rr_allorfirst,
								STACK *rr_from);
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#define SMIME_OP	0x10
#define SMIME_IP	0x20
#define SMIME_SIGNERS	0x40
#define SMIME_ENCRYPT		(1 | SMIME_OP)
#define SMIME_DECRYPT		(2 | SMIME_IP)
#define SMIME_SIGN		(3 | SMIME_OP | SMIME_SIGNERS)
#define SMIME_VERIFY		(4 | SMIME_IP)
#define SMIME_CMSOUT		(5 | SMIME_IP | SMIME_OP)
#define SMIME_RESIGN		(6 | SMIME_IP | SMIME_OP | SMIME_SIGNERS)
#define SMIME_DATAOUT		(7 | SMIME_IP)
#define SMIME_DATA_CREATE	(8 | SMIME_OP)
#define SMIME_DIGEST_VERIFY	(9 | SMIME_IP)
#define SMIME_DIGEST_CREATE	(10 | SMIME_OP)
#define SMIME_UNCOMPRESS	(11 | SMIME_IP)
#define SMIME_COMPRESS		(12 | SMIME_OP)
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#define SMIME_ENCRYPTED_DECRYPT	(13 | SMIME_IP)
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#define SMIME_ENCRYPTED_ENCRYPT	(14 | SMIME_OP)
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#define SMIME_SIGN_RECEIPT	(15 | SMIME_IP | SMIME_OP)
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#define SMIME_VERIFY_RECEIPT	(16 | SMIME_IP)
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int MAIN(int, char **);

int MAIN(int argc, char **argv)
	{
	ENGINE *e = NULL;
	int operation = 0;
	int ret = 0;
	char **args;
	const char *inmode = "r", *outmode = "w";
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	char *infile = NULL, *outfile = NULL, *rctfile = NULL;
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	char *signerfile = NULL, *recipfile = NULL;
	STACK *sksigners = NULL, *skkeys = NULL;
	char *certfile = NULL, *keyfile = NULL, *contfile=NULL;
	const EVP_CIPHER *cipher = NULL;
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	CMS_ContentInfo *cms = NULL, *rcms = NULL;
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	X509_STORE *store = NULL;
	X509 *cert = NULL, *recip = NULL, *signer = NULL;
	EVP_PKEY *key = NULL;
	STACK_OF(X509) *encerts = NULL, *other = NULL;
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	BIO *in = NULL, *out = NULL, *indata = NULL, *rctin = NULL;
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	int badarg = 0;
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	int flags = CMS_DETACHED, noout = 0, print = 0;
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	int rr_print = 0, rr_allorfirst = -1;
	STACK *rr_to = NULL, *rr_from = NULL;
	CMS_ReceiptRequest *rr = NULL;
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	char *to = NULL, *from = NULL, *subject = NULL;
	char *CAfile = NULL, *CApath = NULL;
	char *passargin = NULL, *passin = NULL;
	char *inrand = NULL;
	int need_rand = 0;
	const EVP_MD *sign_md = NULL;
	int informat = FORMAT_SMIME, outformat = FORMAT_SMIME;
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        int rctformat = FORMAT_SMIME, keyform = FORMAT_PEM;
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#ifndef OPENSSL_NO_ENGINE
	char *engine=NULL;
#endif
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	unsigned char *secret_key = NULL, *secret_keyid = NULL;
	size_t secret_keylen = 0, secret_keyidlen = 0;
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	ASN1_OBJECT *econtent_type = NULL;

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	X509_VERIFY_PARAM *vpm = NULL;

	args = argv + 1;
	ret = 1;

	apps_startup();

	if (bio_err == NULL)
		{
		if ((bio_err = BIO_new(BIO_s_file())) != NULL)
			BIO_set_fp(bio_err, stderr, BIO_NOCLOSE|BIO_FP_TEXT);
		}

	if (!load_config(bio_err, NULL))
		goto end;

	while (!badarg && *args && *args[0] == '-')
		{
		if (!strcmp (*args, "-encrypt"))
			operation = SMIME_ENCRYPT;
		else if (!strcmp (*args, "-decrypt"))
			operation = SMIME_DECRYPT;
		else if (!strcmp (*args, "-sign"))
			operation = SMIME_SIGN;
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		else if (!strcmp (*args, "-sign_receipt"))
			operation = SMIME_SIGN_RECEIPT;
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		else if (!strcmp (*args, "-resign"))
			operation = SMIME_RESIGN;
		else if (!strcmp (*args, "-verify"))
			operation = SMIME_VERIFY;
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		else if (!strcmp(*args,"-verify_receipt"))
			{
			operation = SMIME_VERIFY_RECEIPT;
			if (!args[1])
				goto argerr;
			args++;
			rctfile = *args;
			}
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		else if (!strcmp (*args, "-cmsout"))
			operation = SMIME_CMSOUT;
		else if (!strcmp (*args, "-data_out"))
			operation = SMIME_DATAOUT;
		else if (!strcmp (*args, "-data_create"))
			operation = SMIME_DATA_CREATE;
		else if (!strcmp (*args, "-digest_verify"))
			operation = SMIME_DIGEST_VERIFY;
		else if (!strcmp (*args, "-digest_create"))
			operation = SMIME_DIGEST_CREATE;
		else if (!strcmp (*args, "-compress"))
			operation = SMIME_COMPRESS;
		else if (!strcmp (*args, "-uncompress"))
			operation = SMIME_UNCOMPRESS;
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		else if (!strcmp (*args, "-EncryptedData_decrypt"))
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			operation = SMIME_ENCRYPTED_DECRYPT;
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		else if (!strcmp (*args, "-EncryptedData_encrypt"))
			operation = SMIME_ENCRYPTED_ENCRYPT;
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#ifndef OPENSSL_NO_DES
		else if (!strcmp (*args, "-des3")) 
				cipher = EVP_des_ede3_cbc();
		else if (!strcmp (*args, "-des")) 
				cipher = EVP_des_cbc();
#endif
#ifndef OPENSSL_NO_SEED
		else if (!strcmp (*args, "-seed")) 
				cipher = EVP_seed_cbc();
#endif
#ifndef OPENSSL_NO_RC2
		else if (!strcmp (*args, "-rc2-40")) 
				cipher = EVP_rc2_40_cbc();
		else if (!strcmp (*args, "-rc2-128")) 
				cipher = EVP_rc2_cbc();
		else if (!strcmp (*args, "-rc2-64")) 
				cipher = EVP_rc2_64_cbc();
#endif
#ifndef OPENSSL_NO_AES
		else if (!strcmp(*args,"-aes128"))
				cipher = EVP_aes_128_cbc();
		else if (!strcmp(*args,"-aes192"))
				cipher = EVP_aes_192_cbc();
		else if (!strcmp(*args,"-aes256"))
				cipher = EVP_aes_256_cbc();
#endif
#ifndef OPENSSL_NO_CAMELLIA
		else if (!strcmp(*args,"-camellia128"))
				cipher = EVP_camellia_128_cbc();
		else if (!strcmp(*args,"-camellia192"))
				cipher = EVP_camellia_192_cbc();
		else if (!strcmp(*args,"-camellia256"))
				cipher = EVP_camellia_256_cbc();
#endif
		else if (!strcmp (*args, "-text")) 
				flags |= CMS_TEXT;
		else if (!strcmp (*args, "-nointern")) 
				flags |= CMS_NOINTERN;
		else if (!strcmp (*args, "-noverify") 
			|| !strcmp (*args, "-no_signer_cert_verify")) 
				flags |= CMS_NO_SIGNER_CERT_VERIFY;
		else if (!strcmp (*args, "-nocerts")) 
				flags |= CMS_NOCERTS;
		else if (!strcmp (*args, "-noattr")) 
				flags |= CMS_NOATTR;
		else if (!strcmp (*args, "-nodetach")) 
				flags &= ~CMS_DETACHED;
		else if (!strcmp (*args, "-nosmimecap"))
				flags |= CMS_NOSMIMECAP;
		else if (!strcmp (*args, "-binary"))
				flags |= CMS_BINARY;
		else if (!strcmp (*args, "-keyid"))
				flags |= CMS_USE_KEYID;
		else if (!strcmp (*args, "-nosigs"))
				flags |= CMS_NOSIGS;
		else if (!strcmp (*args, "-no_content_verify"))
				flags |= CMS_NO_CONTENT_VERIFY;
		else if (!strcmp (*args, "-no_attr_verify"))
				flags |= CMS_NO_ATTR_VERIFY;
		else if (!strcmp (*args, "-stream"))
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				flags |= CMS_STREAM;
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		else if (!strcmp (*args, "-indef"))
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				flags |= CMS_STREAM;
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		else if (!strcmp (*args, "-noindef"))
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				flags &= ~CMS_STREAM;
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		else if (!strcmp (*args, "-nooldmime"))
				flags |= CMS_NOOLDMIMETYPE;
		else if (!strcmp (*args, "-crlfeol"))
				flags |= CMS_CRLFEOL;
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		else if (!strcmp (*args, "-noout"))
				noout = 1;
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		else if (!strcmp (*args, "-receipt_request_print"))
				rr_print = 1;
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		else if (!strcmp (*args, "-receipt_request_all"))
				rr_allorfirst = 0;
		else if (!strcmp (*args, "-receipt_request_first"))
				rr_allorfirst = 1;
		else if (!strcmp(*args,"-receipt_request_from"))
			{
			if (!args[1])
				goto argerr;
			args++;
			if (!rr_from)
				rr_from = sk_new_null();
			sk_push(rr_from, *args);
			}
		else if (!strcmp(*args,"-receipt_request_to"))
			{
			if (!args[1])
				goto argerr;
			args++;
			if (!rr_to)
				rr_to = sk_new_null();
			sk_push(rr_to, *args);
			}
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		else if (!strcmp (*args, "-print"))
				{
				noout = 1;
				print = 1;
				}
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		else if (!strcmp(*args,"-secretkey"))
			{
			long ltmp;
			if (!args[1])
				goto argerr;
			args++;
			secret_key = string_to_hex(*args, &ltmp);
			if (!secret_key)
				{
				BIO_printf(bio_err, "Invalid key %s\n", *args);
				goto argerr;
				}
			secret_keylen = (size_t)ltmp;
			}
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		else if (!strcmp(*args,"-secretkeyid"))
			{
			long ltmp;
			if (!args[1])
				goto argerr;
			args++;
			secret_keyid = string_to_hex(*args, &ltmp);
			if (!secret_keyid)
				{
				BIO_printf(bio_err, "Invalid id %s\n", *args);
				goto argerr;
				}
			secret_keyidlen = (size_t)ltmp;
			}
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		else if (!strcmp(*args,"-econtent_type"))
			{
			if (!args[1])
				goto argerr;
			args++;
			econtent_type = OBJ_txt2obj(*args, 0);
			if (!econtent_type)
				{
				BIO_printf(bio_err, "Invalid OID %s\n", *args);
				goto argerr;
				}
			}
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		else if (!strcmp(*args,"-rand"))
			{
			if (!args[1])
				goto argerr;
			args++;
			inrand = *args;
			need_rand = 1;
			}
#ifndef OPENSSL_NO_ENGINE
		else if (!strcmp(*args,"-engine"))
			{
			if (!args[1])
				goto argerr;
			engine = *++args;
			}
#endif
		else if (!strcmp(*args,"-passin"))
			{
			if (!args[1])
				goto argerr;
			passargin = *++args;
			}
		else if (!strcmp (*args, "-to"))
			{
			if (!args[1])
				goto argerr;
			to = *++args;
			}
		else if (!strcmp (*args, "-from"))
			{
			if (!args[1])
				goto argerr;
			from = *++args;
			}
		else if (!strcmp (*args, "-subject"))
			{
			if (!args[1])
				goto argerr;
			subject = *++args;
			}
		else if (!strcmp (*args, "-signer"))
			{
			if (!args[1])
				goto argerr;
			/* If previous -signer argument add signer to list */

			if (signerfile)
				{
				if (!sksigners)
					sksigners = sk_new_null();
				sk_push(sksigners, signerfile);
				if (!keyfile)
					keyfile = signerfile;
				if (!skkeys)
					skkeys = sk_new_null();
				sk_push(skkeys, keyfile);
				keyfile = NULL;
				}
			signerfile = *++args;
			}
		else if (!strcmp (*args, "-recip"))
			{
			if (!args[1])
				goto argerr;
			recipfile = *++args;
			}
		else if (!strcmp (*args, "-md"))
			{
			if (!args[1])
				goto argerr;
			sign_md = EVP_get_digestbyname(*++args);
			if (sign_md == NULL)
				{
				BIO_printf(bio_err, "Unknown digest %s\n",
							*args);
				goto argerr;
				}
			}
		else if (!strcmp (*args, "-inkey"))
			{
			if (!args[1])	
				goto argerr;
			/* If previous -inkey arument add signer to list */
			if (keyfile)
				{
				if (!signerfile)
					{
					BIO_puts(bio_err, "Illegal -inkey without -signer\n");
					goto argerr;
					}
				if (!sksigners)
					sksigners = sk_new_null();
				sk_push(sksigners, signerfile);
				signerfile = NULL;
				if (!skkeys)
					skkeys = sk_new_null();
				sk_push(skkeys, keyfile);
				}
			keyfile = *++args;
			}
		else if (!strcmp (*args, "-keyform"))
			{
			if (!args[1])
				goto argerr;
			keyform = str2fmt(*++args);
			}
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		else if (!strcmp (*args, "-rctform"))
			{
			if (!args[1])
				goto argerr;
			rctformat = str2fmt(*++args);
			}
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		else if (!strcmp (*args, "-certfile"))
			{
			if (!args[1])
				goto argerr;
			certfile = *++args;
			}
		else if (!strcmp (*args, "-CAfile"))
			{
			if (!args[1])
				goto argerr;
			CAfile = *++args;
			}
		else if (!strcmp (*args, "-CApath"))
			{
			if (!args[1])
				goto argerr;
			CApath = *++args;
			}
		else if (!strcmp (*args, "-in"))
			{
			if (!args[1])
				goto argerr;
			infile = *++args;
			}
		else if (!strcmp (*args, "-inform"))
			{
			if (!args[1])
				goto argerr;
			informat = str2fmt(*++args);
			}
		else if (!strcmp (*args, "-outform"))
			{
			if (!args[1])
				goto argerr;
			outformat = str2fmt(*++args);
			}
		else if (!strcmp (*args, "-out"))
			{
			if (!args[1])
				goto argerr;
			outfile = *++args;
			}
		else if (!strcmp (*args, "-content"))
			{
			if (!args[1])
				goto argerr;
			contfile = *++args;
			}
		else if (args_verify(&args, NULL, &badarg, bio_err, &vpm))
			continue;
		else if ((cipher = EVP_get_cipherbyname(*args + 1)) == NULL)
			badarg = 1;
		args++;
		}

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	if (((rr_allorfirst != -1) || rr_from) && !rr_to)
		{
		BIO_puts(bio_err, "No Signed Receipts Recipients\n");
		goto argerr;
		}

	if (!(operation & SMIME_SIGNERS)  && (rr_to || rr_from))
		{
		BIO_puts(bio_err, "Signed receipts only allowed with -sign\n");
		goto argerr;
		}
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	if (!(operation & SMIME_SIGNERS) && (skkeys || sksigners))
		{
		BIO_puts(bio_err, "Multiple signers or keys not allowed\n");
		goto argerr;
		}

	if (operation & SMIME_SIGNERS)
		{
		if (keyfile && !signerfile)
			{
			BIO_puts(bio_err, "Illegal -inkey without -signer\n");
			goto argerr;
			}
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		/* Check to see if any final signer needs to be appended */
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		if (signerfile)
			{
			if (!sksigners)
				sksigners = sk_new_null();
			sk_push(sksigners, signerfile);
			if (!skkeys)
				skkeys = sk_new_null();
			if (!keyfile)
				keyfile = signerfile;
			sk_push(skkeys, keyfile);
			}
		if (!sksigners)
			{
			BIO_printf(bio_err, "No signer certificate specified\n");
			badarg = 1;
			}
		signerfile = NULL;
		keyfile = NULL;
		need_rand = 1;
		}
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	else if (operation == SMIME_DECRYPT)
		{
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		if (!recipfile && !keyfile && !secret_key)
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			{
			BIO_printf(bio_err, "No recipient certificate or key specified\n");
			badarg = 1;
			}
		}
	else if (operation == SMIME_ENCRYPT)
		{
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		if (!*args && !secret_key)
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			{
			BIO_printf(bio_err, "No recipient(s) certificate(s) specified\n");
			badarg = 1;
			}
		need_rand = 1;
		}
	else if (!operation)
		badarg = 1;

	if (badarg)
		{
		argerr:
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		BIO_printf (bio_err, "Usage cms [options] cert.pem ...\n");
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		BIO_printf (bio_err, "where options are\n");
		BIO_printf (bio_err, "-encrypt       encrypt message\n");
		BIO_printf (bio_err, "-decrypt       decrypt encrypted message\n");
		BIO_printf (bio_err, "-sign          sign message\n");
		BIO_printf (bio_err, "-verify        verify signed message\n");
		BIO_printf (bio_err, "-cmsout        output CMS structure\n");
#ifndef OPENSSL_NO_DES
		BIO_printf (bio_err, "-des3          encrypt with triple DES\n");
		BIO_printf (bio_err, "-des           encrypt with DES\n");
#endif
#ifndef OPENSSL_NO_SEED
		BIO_printf (bio_err, "-seed          encrypt with SEED\n");
#endif
#ifndef OPENSSL_NO_RC2
		BIO_printf (bio_err, "-rc2-40        encrypt with RC2-40 (default)\n");
		BIO_printf (bio_err, "-rc2-64        encrypt with RC2-64\n");
		BIO_printf (bio_err, "-rc2-128       encrypt with RC2-128\n");
#endif
#ifndef OPENSSL_NO_AES
		BIO_printf (bio_err, "-aes128, -aes192, -aes256\n");
		BIO_printf (bio_err, "               encrypt PEM output with cbc aes\n");
#endif
#ifndef OPENSSL_NO_CAMELLIA
		BIO_printf (bio_err, "-camellia128, -camellia192, -camellia256\n");
		BIO_printf (bio_err, "               encrypt PEM output with cbc camellia\n");
#endif
		BIO_printf (bio_err, "-nointern      don't search certificates in message for signer\n");
		BIO_printf (bio_err, "-nosigs        don't verify message signature\n");
		BIO_printf (bio_err, "-noverify      don't verify signers certificate\n");
		BIO_printf (bio_err, "-nocerts       don't include signers certificate when signing\n");
		BIO_printf (bio_err, "-nodetach      use opaque signing\n");
		BIO_printf (bio_err, "-noattr        don't include any signed attributes\n");
		BIO_printf (bio_err, "-binary        don't translate message to text\n");
		BIO_printf (bio_err, "-certfile file other certificates file\n");
		BIO_printf (bio_err, "-signer file   signer certificate file\n");
		BIO_printf (bio_err, "-recip  file   recipient certificate file for decryption\n");
		BIO_printf (bio_err, "-skeyid        use subject key identifier\n");
		BIO_printf (bio_err, "-in file       input file\n");
		BIO_printf (bio_err, "-inform arg    input format SMIME (default), PEM or DER\n");
		BIO_printf (bio_err, "-inkey file    input private key (if not signer or recipient)\n");
		BIO_printf (bio_err, "-keyform arg   input private key format (PEM or ENGINE)\n");
		BIO_printf (bio_err, "-out file      output file\n");
		BIO_printf (bio_err, "-outform arg   output format SMIME (default), PEM or DER\n");
		BIO_printf (bio_err, "-content file  supply or override content for detached signature\n");
		BIO_printf (bio_err, "-to addr       to address\n");
		BIO_printf (bio_err, "-from ad       from address\n");
		BIO_printf (bio_err, "-subject s     subject\n");
		BIO_printf (bio_err, "-text          include or delete text MIME headers\n");
		BIO_printf (bio_err, "-CApath dir    trusted certificates directory\n");
		BIO_printf (bio_err, "-CAfile file   trusted certificates file\n");
		BIO_printf (bio_err, "-crl_check     check revocation status of signer's certificate using CRLs\n");
		BIO_printf (bio_err, "-crl_check_all check revocation status of signer's certificate chain using CRLs\n");
#ifndef OPENSSL_NO_ENGINE
		BIO_printf (bio_err, "-engine e      use engine e, possibly a hardware device.\n");
#endif
		BIO_printf (bio_err, "-passin arg    input file pass phrase source\n");
		BIO_printf(bio_err,  "-rand file%cfile%c...\n", LIST_SEPARATOR_CHAR, LIST_SEPARATOR_CHAR);
		BIO_printf(bio_err,  "               load the file (or the files in the directory) into\n");
		BIO_printf(bio_err,  "               the random number generator\n");
		BIO_printf (bio_err, "cert.pem       recipient certificate(s) for encryption\n");
		goto end;
		}

#ifndef OPENSSL_NO_ENGINE
        e = setup_engine(bio_err, engine, 0);
#endif

	if (!app_passwd(bio_err, passargin, NULL, &passin, NULL))
		{
		BIO_printf(bio_err, "Error getting password\n");
		goto end;
		}

	if (need_rand)
		{
		app_RAND_load_file(NULL, bio_err, (inrand != NULL));
		if (inrand != NULL)
			BIO_printf(bio_err,"%ld semi-random bytes loaded\n",
				app_RAND_load_files(inrand));
		}

	ret = 2;

	if (!(operation & SMIME_SIGNERS))
		flags &= ~CMS_DETACHED;

	if (operation & SMIME_OP)
		{
		if (outformat == FORMAT_ASN1)
			outmode = "wb";
		}
	else
		{
		if (flags & CMS_BINARY)
			outmode = "wb";
		}

	if (operation & SMIME_IP)
		{
		if (informat == FORMAT_ASN1)
			inmode = "rb";
		}
	else
		{
		if (flags & CMS_BINARY)
			inmode = "rb";
		}

	if (operation == SMIME_ENCRYPT)
		{
		if (!cipher)
			{
683 684
#ifndef OPENSSL_NO_DES			
			cipher = EVP_des_ede3_cbc();
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Dr. Stephen Henson 已提交
685 686 687 688 689
#else
			BIO_printf(bio_err, "No cipher selected\n");
			goto end;
#endif
			}
690 691 692 693 694 695 696 697 698

		if (secret_key && !secret_keyid)
			{
			BIO_printf(bio_err, "No sectre key id\n");
			goto end;
			}

		if (*args)
			encerts = sk_X509_new_null();
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699 700 701 702 703 704 705 706 707 708 709 710 711 712 713 714 715 716 717 718 719 720 721 722 723 724 725 726 727 728 729
		while (*args)
			{
			if (!(cert = load_cert(bio_err,*args,FORMAT_PEM,
				NULL, e, "recipient certificate file")))
				goto end;
			sk_X509_push(encerts, cert);
			cert = NULL;
			args++;
			}
		}

	if (certfile)
		{
		if (!(other = load_certs(bio_err,certfile,FORMAT_PEM, NULL,
			e, "certificate file")))
			{
			ERR_print_errors(bio_err);
			goto end;
			}
		}

	if (recipfile && (operation == SMIME_DECRYPT))
		{
		if (!(recip = load_cert(bio_err,recipfile,FORMAT_PEM,NULL,
			e, "recipient certificate file")))
			{
			ERR_print_errors(bio_err);
			goto end;
			}
		}

730 731 732 733 734 735 736 737 738 739
	if (operation == SMIME_SIGN_RECEIPT)
		{
		if (!(signer = load_cert(bio_err,signerfile,FORMAT_PEM,NULL,
			e, "receipt signer certificate file")))
			{
			ERR_print_errors(bio_err);
			goto end;
			}
		}

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Dr. Stephen Henson 已提交
740 741 742 743 744
	if (operation == SMIME_DECRYPT)
		{
		if (!keyfile)
			keyfile = recipfile;
		}
745
	else if ((operation == SMIME_SIGN) || (operation == SMIME_SIGN_RECEIPT))
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Dr. Stephen Henson 已提交
746 747 748 749 750 751 752 753 754 755 756 757 758 759 760 761 762 763 764 765 766 767 768 769 770 771 772 773 774 775 776 777 778 779 780 781 782 783 784 785 786 787 788 789 790 791 792 793 794 795 796 797 798 799 800 801
		{
		if (!keyfile)
			keyfile = signerfile;
		}
	else keyfile = NULL;

	if (keyfile)
		{
		key = load_key(bio_err, keyfile, keyform, 0, passin, e,
			       "signing key file");
		if (!key)
			goto end;
		}

	if (infile)
		{
		if (!(in = BIO_new_file(infile, inmode)))
			{
			BIO_printf (bio_err,
				 "Can't open input file %s\n", infile);
			goto end;
			}
		}
	else
		in = BIO_new_fp(stdin, BIO_NOCLOSE);

	if (operation & SMIME_IP)
		{
		if (informat == FORMAT_SMIME) 
			cms = SMIME_read_CMS(in, &indata);
		else if (informat == FORMAT_PEM) 
			cms = PEM_read_bio_CMS(in, NULL, NULL, NULL);
		else if (informat == FORMAT_ASN1) 
			cms = d2i_CMS_bio(in, NULL);
		else
			{
			BIO_printf(bio_err, "Bad input format for CMS file\n");
			goto end;
			}

		if (!cms)
			{
			BIO_printf(bio_err, "Error reading S/MIME message\n");
			goto end;
			}
		if (contfile)
			{
			BIO_free(indata);
			if (!(indata = BIO_new_file(contfile, "rb")))
				{
				BIO_printf(bio_err, "Can't read content file %s\n", contfile);
				goto end;
				}
			}
		}

802 803 804 805 806 807 808 809 810 811 812 813 814 815 816 817 818 819 820 821 822 823 824 825 826 827 828 829 830
	if (rctfile)
		{
		char *rctmode = (rctformat == FORMAT_ASN1) ? "rb" : "r";
		if (!(rctin = BIO_new_file(rctfile, rctmode)))
			{
			BIO_printf (bio_err,
				 "Can't open receipt file %s\n", rctfile);
			goto end;
			}
		
		if (rctformat == FORMAT_SMIME) 
			rcms = SMIME_read_CMS(rctin, NULL);
		else if (rctformat == FORMAT_PEM) 
			rcms = PEM_read_bio_CMS(rctin, NULL, NULL, NULL);
		else if (rctformat == FORMAT_ASN1) 
			rcms = d2i_CMS_bio(rctin, NULL);
		else
			{
			BIO_printf(bio_err, "Bad input format for receipt\n");
			goto end;
			}

		if (!rcms)
			{
			BIO_printf(bio_err, "Error reading receipt\n");
			goto end;
			}
		}

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Dr. Stephen Henson 已提交
831 832 833 834 835 836 837 838 839 840 841 842 843 844 845 846 847 848 849 850
	if (outfile)
		{
		if (!(out = BIO_new_file(outfile, outmode)))
			{
			BIO_printf (bio_err,
				 "Can't open output file %s\n", outfile);
			goto end;
			}
		}
	else
		{
		out = BIO_new_fp(stdout, BIO_NOCLOSE);
#ifdef OPENSSL_SYS_VMS
		{
		    BIO *tmpbio = BIO_new(BIO_f_linebuffer());
		    out = BIO_push(tmpbio, out);
		}
#endif
		}

851
	if ((operation == SMIME_VERIFY) || (operation == SMIME_VERIFY_RECEIPT))
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Dr. Stephen Henson 已提交
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		{
		if (!(store = setup_verify(bio_err, CAfile, CApath)))
			goto end;
855
		X509_STORE_set_verify_cb_func(store, cms_cb);
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Dr. Stephen Henson 已提交
856 857 858 859 860 861 862 863 864 865 866 867 868 869 870 871 872 873 874 875 876
		if (vpm)
			X509_STORE_set1_param(store, vpm);
		}


	ret = 3;

	if (operation == SMIME_DATA_CREATE)
		{
		cms = CMS_data_create(in, flags);
		}
	else if (operation == SMIME_DIGEST_CREATE)
		{
		cms = CMS_digest_create(in, sign_md, flags);
		}
	else if (operation == SMIME_COMPRESS)
		{
		cms = CMS_compress(in, -1, flags);
		}
	else if (operation == SMIME_ENCRYPT)
		{
877
		flags |= CMS_PARTIAL;
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Dr. Stephen Henson 已提交
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		cms = CMS_encrypt(encerts, in, cipher, flags);
879 880 881 882 883 884 885 886 887 888 889 890 891 892 893
		if (!cms)
			goto end;
		if (secret_key)
			{
			if (!CMS_add0_recipient_key(cms, NID_undef, 
						secret_key, secret_keylen,
						secret_keyid, secret_keyidlen,
						NULL, NULL, NULL))
				goto end;
			/* NULL these because call absorbs them */
			secret_key = NULL;
			secret_keyid = NULL;
			}
		if (!(flags & CMS_STREAM))
			{
894
			if (!CMS_final(cms, in, NULL, flags))
895 896
				goto end;
			}
D
Dr. Stephen Henson 已提交
897
		}
898 899 900 901 902
	else if (operation == SMIME_ENCRYPTED_ENCRYPT)
		{
		cms = CMS_EncryptedData_encrypt(in, cipher,
						secret_key, secret_keylen,
						flags);
903

904 905 906 907 908 909 910 911 912 913 914 915 916 917 918
		}
	else if (operation == SMIME_SIGN_RECEIPT)
		{
		CMS_ContentInfo *srcms = NULL;
		STACK_OF(CMS_SignerInfo) *sis;
		CMS_SignerInfo *si;
		sis = CMS_get0_SignerInfos(cms);
		if (!sis)
			goto end;
		si = sk_CMS_SignerInfo_value(sis, 0);
		srcms = CMS_sign_receipt(si, signer, key, other, flags);
		if (!srcms)
			goto end;
		CMS_ContentInfo_free(cms);
		cms = srcms;
919
		}
D
Dr. Stephen Henson 已提交
920 921 922
	else if (operation & SMIME_SIGNERS)
		{
		int i;
923
		/* If detached data content we enable streaming if
D
Dr. Stephen Henson 已提交
924 925 926 927
		 * S/MIME output format.
		 */
		if (operation == SMIME_SIGN)
			{
928
				
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Dr. Stephen Henson 已提交
929 930
			if (flags & CMS_DETACHED)
				{
931 932
				if (outformat == FORMAT_SMIME)
					flags |= CMS_STREAM;
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Dr. Stephen Henson 已提交
933 934 935 936 937
				}
			flags |= CMS_PARTIAL;
			cms = CMS_sign(NULL, NULL, other, in, flags);
			if (!cms)
				goto end;
938 939 940 941 942 943 944 945 946 947 948 949 950 951
			if (econtent_type)
				CMS_set1_eContentType(cms, econtent_type);

			if (rr_to)
				{
				rr = make_receipt_request(rr_to, rr_allorfirst,
								rr_from);
				if (!rr)
					{
					BIO_puts(bio_err,
				"Signed Receipt Request Creation Error\n");
					goto end;
					}
				}
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Dr. Stephen Henson 已提交
952 953 954 955 956
			}
		else
			flags |= CMS_REUSE_DIGEST;
		for (i = 0; i < sk_num(sksigners); i++)
			{
957
			CMS_SignerInfo *si;
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Dr. Stephen Henson 已提交
958 959 960 961 962 963 964 965 966 967
			signerfile = sk_value(sksigners, i);
			keyfile = sk_value(skkeys, i);
			signer = load_cert(bio_err, signerfile,FORMAT_PEM, NULL,
					e, "signer certificate");
			if (!signer)
				goto end;
			key = load_key(bio_err, keyfile, keyform, 0, passin, e,
			       "signing key file");
			if (!key)
				goto end;
968 969 970 971
			si = CMS_add1_signer(cms, signer, key, sign_md, flags);
			if (!si)
				goto end;
			if (rr && !CMS_add1_ReceiptRequest(si, rr))
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Dr. Stephen Henson 已提交
972 973 974 975 976 977 978 979 980
				goto end;
			X509_free(signer);
			signer = NULL;
			EVP_PKEY_free(key);
			key = NULL;
			}
		/* If not streaming or resigning finalize structure */
		if ((operation == SMIME_SIGN) && !(flags & CMS_STREAM))
			{
981
			if (!CMS_final(cms, in, NULL, flags))
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Dr. Stephen Henson 已提交
982 983 984 985 986 987 988 989 990 991 992 993 994
				goto end;
			}
		}

	if (!cms)
		{
		BIO_printf(bio_err, "Error creating CMS structure\n");
		goto end;
		}

	ret = 4;
	if (operation == SMIME_DECRYPT)
		{
995 996 997 998 999 1000 1001 1002 1003 1004 1005 1006 1007 1008 1009 1010 1011 1012 1013 1014 1015 1016 1017 1018

		if (secret_key)
			{
			if (!CMS_decrypt_set1_key(cms,
						secret_key, secret_keylen,
						secret_keyid, secret_keyidlen))
				{
				BIO_puts(bio_err,
					"Error decrypting CMS using secret key\n");
				goto end;
				}
			}

		if (key)
			{
			if (!CMS_decrypt_set1_pkey(cms, key, recip))
				{
				BIO_puts(bio_err,
					"Error decrypting CMS using private key\n");
				goto end;
				}
			}

		if (!CMS_decrypt(cms, NULL, NULL, indata, out, flags))
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Dr. Stephen Henson 已提交
1019 1020 1021 1022 1023 1024 1025 1026 1027 1028 1029 1030
			{
			BIO_printf(bio_err, "Error decrypting CMS structure\n");
			goto end;
			}
		}
	else if (operation == SMIME_DATAOUT)
		{
		if (!CMS_data(cms, out, flags))
			goto end;
		}
	else if (operation == SMIME_UNCOMPRESS)
		{
1031
		if (!CMS_uncompress(cms, indata, out, flags))
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Dr. Stephen Henson 已提交
1032 1033 1034 1035 1036 1037 1038 1039 1040 1041 1042 1043
			goto end;
		}
	else if (operation == SMIME_DIGEST_VERIFY)
		{
		if (CMS_digest_verify(cms, indata, out, flags) > 0)
			BIO_printf(bio_err, "Verification successful\n");
		else
			{
			BIO_printf(bio_err, "Verification failure\n");
			goto end;
			}
		}
1044 1045 1046 1047 1048 1049
	else if (operation == SMIME_ENCRYPTED_DECRYPT)
		{
		if (!CMS_EncryptedData_decrypt(cms, secret_key, secret_keylen,
						indata, out, flags))
			goto end;
		}
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Dr. Stephen Henson 已提交
1050 1051 1052 1053 1054 1055 1056 1057 1058 1059 1060 1061 1062 1063 1064 1065 1066 1067 1068 1069 1070 1071 1072
	else if (operation == SMIME_VERIFY)
		{
		if (CMS_verify(cms, other, store, indata, out, flags) > 0)
			BIO_printf(bio_err, "Verification successful\n");
		else
			{
			BIO_printf(bio_err, "Verification failure\n");
			goto end;
			}
		if (signerfile)
			{
			STACK_OF(X509) *signers;
			signers = CMS_get0_signers(cms);
			if (!save_certs(signerfile, signers))
				{
				BIO_printf(bio_err,
						"Error writing signers to %s\n",
								signerfile);
				ret = 5;
				goto end;
				}
			sk_X509_free(signers);
			}
1073 1074 1075
		if (rr_print)
			receipt_request_print(bio_err, cms);
					
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Dr. Stephen Henson 已提交
1076
		}
1077 1078 1079 1080 1081 1082 1083 1084 1085 1086
	else if (operation == SMIME_VERIFY_RECEIPT)
		{
		if (CMS_verify_receipt(rcms, cms, other, store, flags) > 0)
			BIO_printf(bio_err, "Verification successful\n");
		else
			{
			BIO_printf(bio_err, "Verification failure\n");
			goto end;
			}
		}
D
Dr. Stephen Henson 已提交
1087 1088
	else
		{
1089 1090 1091 1092 1093 1094
		if (noout)
			{
			if (print)
				CMS_ContentInfo_print_ctx(out, cms, 0, NULL);
			}
		else if (outformat == FORMAT_SMIME)
D
Dr. Stephen Henson 已提交
1095 1096 1097 1098 1099 1100 1101 1102 1103 1104 1105 1106 1107 1108 1109 1110 1111 1112 1113 1114 1115 1116 1117 1118 1119 1120 1121 1122 1123 1124 1125 1126 1127 1128 1129 1130 1131 1132 1133 1134 1135
			{
			if (to)
				BIO_printf(out, "To: %s\n", to);
			if (from)
				BIO_printf(out, "From: %s\n", from);
			if (subject)
				BIO_printf(out, "Subject: %s\n", subject);
			if (operation == SMIME_RESIGN)
				ret = SMIME_write_CMS(out, cms, indata, flags);
			else
				ret = SMIME_write_CMS(out, cms, in, flags);
			}
		else if (outformat == FORMAT_PEM) 
			ret = PEM_write_bio_CMS_stream(out, cms, in, flags);
		else if (outformat == FORMAT_ASN1) 
			ret = i2d_CMS_bio_stream(out,cms, in, flags);
		else
			{
			BIO_printf(bio_err, "Bad output format for CMS file\n");
			goto end;
			}
		if (ret <= 0)
			{
			ret = 6;
			goto end;
			}
		}
	ret = 0;
end:
	if (ret)
		ERR_print_errors(bio_err);
	if (need_rand)
		app_RAND_write_file(NULL, bio_err);
	sk_X509_pop_free(encerts, X509_free);
	sk_X509_pop_free(other, X509_free);
	if (vpm)
		X509_VERIFY_PARAM_free(vpm);
	if (sksigners)
		sk_free(sksigners);
	if (skkeys)
		sk_free(skkeys);
1136 1137
	if (secret_key)
		OPENSSL_free(secret_key);
1138 1139
	if (secret_keyid)
		OPENSSL_free(secret_keyid);
1140 1141
	if (econtent_type)
		ASN1_OBJECT_free(econtent_type);
1142 1143 1144 1145 1146 1147
	if (rr)
		CMS_ReceiptRequest_free(rr);
	if (rr_to)
		sk_free(rr_to);
	if (rr_from)
		sk_free(rr_from);
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Dr. Stephen Henson 已提交
1148 1149 1150 1151 1152 1153
	X509_STORE_free(store);
	X509_free(cert);
	X509_free(recip);
	X509_free(signer);
	EVP_PKEY_free(key);
	CMS_ContentInfo_free(cms);
1154 1155
	CMS_ContentInfo_free(rcms);
	BIO_free(rctin);
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Dr. Stephen Henson 已提交
1156 1157 1158 1159 1160 1161 1162 1163 1164 1165 1166 1167 1168 1169 1170 1171 1172 1173 1174 1175 1176 1177 1178 1179
	BIO_free(in);
	BIO_free(indata);
	BIO_free_all(out);
	if (passin) OPENSSL_free(passin);
	return (ret);
}

static int save_certs(char *signerfile, STACK_OF(X509) *signers)
	{
	int i;
	BIO *tmp;
	if (!signerfile)
		return 1;
	tmp = BIO_new_file(signerfile, "w");
	if (!tmp) return 0;
	for(i = 0; i < sk_X509_num(signers); i++)
		PEM_write_bio_X509(tmp, sk_X509_value(signers, i));
	BIO_free(tmp);
	return 1;
	}
	

/* Minimal callback just to output policy info (if any) */

1180
static int cms_cb(int ok, X509_STORE_CTX *ctx)
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Dr. Stephen Henson 已提交
1181 1182 1183 1184 1185 1186 1187 1188 1189 1190 1191 1192 1193 1194 1195
	{
	int error;

	error = X509_STORE_CTX_get_error(ctx);

	if ((error != X509_V_ERR_NO_EXPLICIT_POLICY)
		&& ((error != X509_V_OK) || (ok != 2)))
		return ok;

	policies_print(NULL, ctx);

	return ok;

	}

1196 1197 1198 1199 1200 1201 1202 1203 1204 1205 1206 1207 1208 1209 1210 1211 1212 1213 1214 1215 1216 1217 1218 1219 1220 1221 1222 1223 1224 1225 1226 1227 1228 1229 1230 1231 1232 1233 1234 1235 1236 1237 1238 1239 1240 1241 1242 1243 1244 1245 1246 1247 1248 1249 1250 1251 1252 1253 1254 1255 1256 1257 1258 1259 1260 1261 1262 1263 1264 1265 1266
static void gnames_stack_print(BIO *out, STACK_OF(GENERAL_NAMES) *gns)
	{
	STACK_OF(GENERAL_NAME) *gens;
	GENERAL_NAME *gen;
	int i, j;
	for (i = 0; i < sk_GENERAL_NAMES_num(gns); i++)
		{
		gens = sk_GENERAL_NAMES_value(gns, i);
		for (j = 0; j < sk_GENERAL_NAME_num(gens); j++)
			{
			gen = sk_GENERAL_NAME_value(gens, j);
			BIO_puts(out, "    ");
			GENERAL_NAME_print(out, gen);
			BIO_puts(out, "\n");
			}
		}
	return;
	}

static void receipt_request_print(BIO *out, CMS_ContentInfo *cms)
	{
	STACK_OF(CMS_SignerInfo) *sis;
	CMS_SignerInfo *si;
	CMS_ReceiptRequest *rr;
	int allorfirst;
	STACK_OF(GENERAL_NAMES) *rto, *rlist;
	ASN1_STRING *scid;
	int i, rv;
	sis = CMS_get0_SignerInfos(cms);
	for (i = 0; i < sk_CMS_SignerInfo_num(sis); i++)
		{
		si = sk_CMS_SignerInfo_value(sis, i);
		rv = CMS_get1_ReceiptRequest(si, &rr);
		BIO_printf(bio_err, "Signer %d:\n", i + 1);
		if (rv == 0)
			BIO_puts(bio_err, "  No Receipt Request\n");
		else if (rv < 0)
			{
			BIO_puts(bio_err, "  Receipt Request Parse Error\n");
			ERR_print_errors(bio_err);
			}
		else
			{
			char *id;
			int idlen;
			CMS_ReceiptRequest_get0_values(rr, &scid, &allorfirst,
							&rlist, &rto);
			BIO_puts(out, "  Signed Content ID:\n");
			idlen = ASN1_STRING_length(scid);
			id = (char *)ASN1_STRING_data(scid);
			BIO_dump_indent(out, id, idlen, 4);
			BIO_puts(out, "  Receipts From");
			if (rlist)
				{
				BIO_puts(out, " List:\n");
				gnames_stack_print(out, rlist);
				}
			else if (allorfirst == 1)
				BIO_puts(out, ": First Tier\n");
			else if (allorfirst == 0)
				BIO_puts(out, ": All\n");
			else
				BIO_printf(out, " Unknown (%d)\n", allorfirst);
			BIO_puts(out, "  Receipts To:\n");
			gnames_stack_print(out, rto);
			}
		if (rr)
			CMS_ReceiptRequest_free(rr);
		}
	}

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static STACK_OF(GENERAL_NAMES) *make_names_stack(STACK *ns)
	{
	int i;
	STACK_OF(GENERAL_NAMES) *ret;
	GENERAL_NAMES *gens = NULL;
	GENERAL_NAME *gen = NULL;
	ret = sk_GENERAL_NAMES_new_null();
	if (!ret)
		goto err;
	for (i = 0; i < sk_num(ns); i++)
		{
		char *str = sk_value(ns, i);
		gen = a2i_GENERAL_NAME(NULL, NULL, NULL, GEN_EMAIL, str, 0);
		if (!gen)
			goto err;
		gens = GENERAL_NAMES_new();
		if (!gens)
			goto err;
		if (!sk_GENERAL_NAME_push(gens, gen))
			goto err;
		gen = NULL;
		if (!sk_GENERAL_NAMES_push(ret, gens))
			goto err;
		gens = NULL;
		}

	return ret;

	err:
	if (ret)
		sk_GENERAL_NAMES_pop_free(ret, GENERAL_NAMES_free);
	if (gens)
		GENERAL_NAMES_free(gens);
	if (gen)
		GENERAL_NAME_free(gen);
	return NULL;
	}


static CMS_ReceiptRequest *make_receipt_request(STACK *rr_to, int rr_allorfirst,
								STACK *rr_from)
	{
	STACK_OF(GENERAL_NAMES) *rct_to, *rct_from;
	CMS_ReceiptRequest *rr;
	rct_to = make_names_stack(rr_to);
	if (!rct_to)
		goto err;
	if (rr_from)
		{
		rct_from = make_names_stack(rr_from);
		if (!rct_from)
			goto err;
		}
	else
		rct_from = NULL;
	rr = CMS_ReceiptRequest_create0(NULL, -1, rr_allorfirst, rct_from,
						rct_to);
	return rr;
	err:
	return NULL;
	}

D
Dr. Stephen Henson 已提交
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#endif