sl@0: /* smime.c */
sl@0: /* Written by Dr Stephen N Henson (shenson@bigfoot.com) for the OpenSSL
sl@0:  * project.
sl@0:  */
sl@0: /* ====================================================================
sl@0:  * Copyright (c) 1999-2004 The OpenSSL Project.  All rights reserved.
sl@0:  *
sl@0:  * Redistribution and use in source and binary forms, with or without
sl@0:  * modification, are permitted provided that the following conditions
sl@0:  * are met:
sl@0:  *
sl@0:  * 1. Redistributions of source code must retain the above copyright
sl@0:  *    notice, this list of conditions and the following disclaimer. 
sl@0:  *
sl@0:  * 2. Redistributions in binary form must reproduce the above copyright
sl@0:  *    notice, this list of conditions and the following disclaimer in
sl@0:  *    the documentation and/or other materials provided with the
sl@0:  *    distribution.
sl@0:  *
sl@0:  * 3. All advertising materials mentioning features or use of this
sl@0:  *    software must display the following acknowledgment:
sl@0:  *    "This product includes software developed by the OpenSSL Project
sl@0:  *    for use in the OpenSSL Toolkit. (http://www.OpenSSL.org/)"
sl@0:  *
sl@0:  * 4. The names "OpenSSL Toolkit" and "OpenSSL Project" must not be used to
sl@0:  *    endorse or promote products derived from this software without
sl@0:  *    prior written permission. For written permission, please contact
sl@0:  *    licensing@OpenSSL.org.
sl@0:  *
sl@0:  * 5. Products derived from this software may not be called "OpenSSL"
sl@0:  *    nor may "OpenSSL" appear in their names without prior written
sl@0:  *    permission of the OpenSSL Project.
sl@0:  *
sl@0:  * 6. Redistributions of any form whatsoever must retain the following
sl@0:  *    acknowledgment:
sl@0:  *    "This product includes software developed by the OpenSSL Project
sl@0:  *    for use in the OpenSSL Toolkit (http://www.OpenSSL.org/)"
sl@0:  *
sl@0:  * THIS SOFTWARE IS PROVIDED BY THE OpenSSL PROJECT ``AS IS'' AND ANY
sl@0:  * EXPRESSED OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
sl@0:  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
sl@0:  * PURPOSE ARE DISCLAIMED.  IN NO EVENT SHALL THE OpenSSL PROJECT OR
sl@0:  * ITS CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
sl@0:  * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
sl@0:  * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
sl@0:  * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
sl@0:  * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT,
sl@0:  * STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
sl@0:  * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED
sl@0:  * OF THE POSSIBILITY OF SUCH DAMAGE.
sl@0:  * ====================================================================
sl@0:  *
sl@0:  * This product includes cryptographic software written by Eric Young
sl@0:  * (eay@cryptsoft.com).  This product includes software written by Tim
sl@0:  * Hudson (tjh@cryptsoft.com).
sl@0:  *
sl@0:  */
sl@0: 
sl@0: /* S/MIME utility function */
sl@0: 
sl@0: #include <stdio.h>
sl@0: #include <string.h>
sl@0: #include "apps.h"
sl@0: #include <openssl/crypto.h>
sl@0: #include <openssl/pem.h>
sl@0: #include <openssl/err.h>
sl@0: #include <openssl/x509_vfy.h>
sl@0: #include <openssl/x509v3.h>
sl@0: 
sl@0: #undef PROG
sl@0: #define PROG smime_main
sl@0: static int save_certs(char *signerfile, STACK_OF(X509) *signers);
sl@0: static int smime_cb(int ok, X509_STORE_CTX *ctx);
sl@0: 
sl@0: #define SMIME_OP	0x10
sl@0: #define SMIME_ENCRYPT	(1 | SMIME_OP)
sl@0: #define SMIME_DECRYPT	2
sl@0: #define SMIME_SIGN	(3 | SMIME_OP)
sl@0: #define SMIME_VERIFY	4
sl@0: #define SMIME_PK7OUT	5
sl@0: 
sl@0: 
sl@0: int MAIN(int, char **);
sl@0: 
sl@0: int MAIN(int argc, char **argv)
sl@0: 	{
sl@0: 	ENGINE *e = NULL;
sl@0: 	int operation = 0;
sl@0: 	int ret = 0;
sl@0: 	char **args;
sl@0: 	const char *inmode = "r", *outmode = "w";
sl@0: 	char *infile = NULL, *outfile = NULL;
sl@0: 	char *signerfile = NULL, *recipfile = NULL;
sl@0: 	char *certfile = NULL, *keyfile = NULL, *contfile=NULL;
sl@0: 	const EVP_CIPHER *cipher = NULL;
sl@0: 	PKCS7 *p7 = NULL;
sl@0: 	X509_STORE *store = NULL;
sl@0: 	X509 *cert = NULL, *recip = NULL, *signer = NULL;
sl@0: 	EVP_PKEY *key = NULL;
sl@0: 	STACK_OF(X509) *encerts = NULL, *other = NULL;
sl@0: 	BIO *in = NULL, *out = NULL, *indata = NULL;
sl@0: 	int badarg = 0;
sl@0: 	int flags = PKCS7_DETACHED;
sl@0: 	char *to = NULL, *from = NULL, *subject = NULL;
sl@0: 	char *CAfile = NULL, *CApath = NULL;
sl@0: 	char *passargin = NULL, *passin = NULL;
sl@0: 	char *inrand = NULL;
sl@0: 	int need_rand = 0;
sl@0: 	int informat = FORMAT_SMIME, outformat = FORMAT_SMIME;
sl@0:         int keyform = FORMAT_PEM;
sl@0: #ifndef OPENSSL_NO_ENGINE
sl@0: 	char *engine=NULL;
sl@0: #endif
sl@0: 
sl@0: 	X509_VERIFY_PARAM *vpm = NULL;
sl@0: 
sl@0: 	args = argv + 1;
sl@0: 	ret = 1;
sl@0: 
sl@0: 	apps_startup();
sl@0: 
sl@0: 	if (bio_err == NULL)
sl@0: 		{
sl@0: 		if ((bio_err = BIO_new(BIO_s_file())) != NULL)
sl@0: 			BIO_set_fp(bio_err, stderr, BIO_NOCLOSE|BIO_FP_TEXT);
sl@0: 
sl@0: 		}
sl@0: 
sl@0: 	if (!load_config(bio_err, NULL))
sl@0: 		goto end;
sl@0: 
sl@0: 	while (!badarg && *args && *args[0] == '-')
sl@0: 		{
sl@0: 		if (!strcmp (*args, "-encrypt"))
sl@0: 			operation = SMIME_ENCRYPT;
sl@0: 		else if (!strcmp (*args, "-decrypt"))
sl@0: 			operation = SMIME_DECRYPT;
sl@0: 		else if (!strcmp (*args, "-sign"))
sl@0: 			operation = SMIME_SIGN;
sl@0: 		else if (!strcmp (*args, "-verify"))
sl@0: 			operation = SMIME_VERIFY;
sl@0: 		else if (!strcmp (*args, "-pk7out"))
sl@0: 			operation = SMIME_PK7OUT;
sl@0: #ifndef OPENSSL_NO_DES
sl@0: 		else if (!strcmp (*args, "-des3")) 
sl@0: 				cipher = EVP_des_ede3_cbc();
sl@0: 		else if (!strcmp (*args, "-des")) 
sl@0: 				cipher = EVP_des_cbc();
sl@0: #endif
sl@0: #ifndef OPENSSL_NO_RC2
sl@0: 		else if (!strcmp (*args, "-rc2-40")) 
sl@0: 				cipher = EVP_rc2_40_cbc();
sl@0: 		else if (!strcmp (*args, "-rc2-128")) 
sl@0: 				cipher = EVP_rc2_cbc();
sl@0: 		else if (!strcmp (*args, "-rc2-64")) 
sl@0: 				cipher = EVP_rc2_64_cbc();
sl@0: #endif
sl@0: #ifndef OPENSSL_NO_AES
sl@0: 		else if (!strcmp(*args,"-aes128"))
sl@0: 				cipher = EVP_aes_128_cbc();
sl@0: 		else if (!strcmp(*args,"-aes192"))
sl@0: 				cipher = EVP_aes_192_cbc();
sl@0: 		else if (!strcmp(*args,"-aes256"))
sl@0: 				cipher = EVP_aes_256_cbc();
sl@0: #endif
sl@0: 		else if (!strcmp (*args, "-text")) 
sl@0: 				flags |= PKCS7_TEXT;
sl@0: 		else if (!strcmp (*args, "-nointern")) 
sl@0: 				flags |= PKCS7_NOINTERN;
sl@0: 		else if (!strcmp (*args, "-noverify")) 
sl@0: 				flags |= PKCS7_NOVERIFY;
sl@0: 		else if (!strcmp (*args, "-nochain")) 
sl@0: 				flags |= PKCS7_NOCHAIN;
sl@0: 		else if (!strcmp (*args, "-nocerts")) 
sl@0: 				flags |= PKCS7_NOCERTS;
sl@0: 		else if (!strcmp (*args, "-noattr")) 
sl@0: 				flags |= PKCS7_NOATTR;
sl@0: 		else if (!strcmp (*args, "-nodetach")) 
sl@0: 				flags &= ~PKCS7_DETACHED;
sl@0: 		else if (!strcmp (*args, "-nosmimecap"))
sl@0: 				flags |= PKCS7_NOSMIMECAP;
sl@0: 		else if (!strcmp (*args, "-binary"))
sl@0: 				flags |= PKCS7_BINARY;
sl@0: 		else if (!strcmp (*args, "-nosigs"))
sl@0: 				flags |= PKCS7_NOSIGS;
sl@0: 		else if (!strcmp (*args, "-nooldmime"))
sl@0: 				flags |= PKCS7_NOOLDMIMETYPE;
sl@0: 		else if (!strcmp (*args, "-crlfeol"))
sl@0: 				flags |= PKCS7_CRLFEOL;
sl@0: 		else if (!strcmp(*args,"-rand"))
sl@0: 			{
sl@0: 			if (args[1])
sl@0: 				{
sl@0: 				args++;
sl@0: 				inrand = *args;
sl@0: 				}
sl@0: 			else
sl@0: 				badarg = 1;
sl@0: 			need_rand = 1;
sl@0: 			}
sl@0: #ifndef OPENSSL_NO_ENGINE
sl@0: 		else if (!strcmp(*args,"-engine"))
sl@0: 			{
sl@0: 			if (args[1])
sl@0: 				{
sl@0: 				args++;
sl@0: 				engine = *args;
sl@0: 				}
sl@0: 			else badarg = 1;
sl@0: 			}
sl@0: #endif
sl@0: 		else if (!strcmp(*args,"-passin"))
sl@0: 			{
sl@0: 			if (args[1])
sl@0: 				{
sl@0: 				args++;
sl@0: 				passargin = *args;
sl@0: 				}
sl@0: 			else
sl@0: 				badarg = 1;
sl@0: 			}
sl@0: 		else if (!strcmp (*args, "-to"))
sl@0: 			{
sl@0: 			if (args[1])
sl@0: 				{
sl@0: 				args++;
sl@0: 				to = *args;
sl@0: 				}
sl@0: 			else
sl@0: 				badarg = 1;
sl@0: 			}
sl@0: 		else if (!strcmp (*args, "-from"))
sl@0: 			{
sl@0: 			if (args[1])
sl@0: 				{
sl@0: 				args++;
sl@0: 				from = *args;
sl@0: 				}
sl@0: 			else badarg = 1;
sl@0: 			}
sl@0: 		else if (!strcmp (*args, "-subject"))
sl@0: 			{
sl@0: 			if (args[1])
sl@0: 				{
sl@0: 				args++;
sl@0: 				subject = *args;
sl@0: 				}
sl@0: 			else
sl@0: 				badarg = 1;
sl@0: 			}
sl@0: 		else if (!strcmp (*args, "-signer"))
sl@0: 			{
sl@0: 			if (args[1])
sl@0: 				{
sl@0: 				args++;
sl@0: 				signerfile = *args;
sl@0: 				}
sl@0: 			else
sl@0: 				badarg = 1;
sl@0: 			}
sl@0: 		else if (!strcmp (*args, "-recip"))
sl@0: 			{
sl@0: 			if (args[1])
sl@0: 				{
sl@0: 				args++;
sl@0: 				recipfile = *args;
sl@0: 				}
sl@0: 			else badarg = 1;
sl@0: 			}
sl@0: 		else if (!strcmp (*args, "-inkey"))
sl@0: 			{
sl@0: 			if (args[1])
sl@0: 				{
sl@0: 				args++;
sl@0: 				keyfile = *args;
sl@0: 				}
sl@0: 			else
sl@0: 				badarg = 1;
sl@0: 		}
sl@0: 		else if (!strcmp (*args, "-keyform"))
sl@0: 			{
sl@0: 			if (args[1])
sl@0: 				{
sl@0: 				args++;
sl@0: 				keyform = str2fmt(*args);
sl@0: 				}
sl@0: 			else
sl@0: 				badarg = 1;
sl@0: 			}
sl@0: 		else if (!strcmp (*args, "-certfile"))
sl@0: 			{
sl@0: 			if (args[1])
sl@0: 				{
sl@0: 				args++;
sl@0: 				certfile = *args;
sl@0: 				}
sl@0: 			else
sl@0: 				badarg = 1;
sl@0: 			}
sl@0: 		else if (!strcmp (*args, "-CAfile"))
sl@0: 			{
sl@0: 			if (args[1])
sl@0: 				{
sl@0: 				args++;
sl@0: 				CAfile = *args;
sl@0: 				}
sl@0: 			else
sl@0: 				badarg = 1;
sl@0: 			}
sl@0: 		else if (!strcmp (*args, "-CApath"))
sl@0: 			{
sl@0: 			if (args[1])
sl@0: 				{
sl@0: 				args++;
sl@0: 				CApath = *args;
sl@0: 				}
sl@0: 			else
sl@0: 				badarg = 1;
sl@0: 			}
sl@0: 		else if (!strcmp (*args, "-in"))
sl@0: 			{
sl@0: 			if (args[1])
sl@0: 				{
sl@0: 				args++;
sl@0: 				infile = *args;
sl@0: 				}
sl@0: 			else
sl@0: 				badarg = 1;
sl@0: 			}
sl@0: 		else if (!strcmp (*args, "-inform"))
sl@0: 			{
sl@0: 			if (args[1])
sl@0: 				{
sl@0: 				args++;
sl@0: 				informat = str2fmt(*args);
sl@0: 				}
sl@0: 			else
sl@0: 				badarg = 1;
sl@0: 			}
sl@0: 		else if (!strcmp (*args, "-outform"))
sl@0: 			{
sl@0: 			if (args[1])
sl@0: 				{
sl@0: 				args++;
sl@0: 				outformat = str2fmt(*args);
sl@0: 				}
sl@0: 			else
sl@0: 				badarg = 1;
sl@0: 			}
sl@0: 		else if (!strcmp (*args, "-out"))
sl@0: 			{
sl@0: 			if (args[1])
sl@0: 				{
sl@0: 				args++;
sl@0: 				outfile = *args;
sl@0: 				}
sl@0: 			else
sl@0: 				badarg = 1;
sl@0: 			}
sl@0: 		else if (!strcmp (*args, "-content"))
sl@0: 			{
sl@0: 			if (args[1])
sl@0: 				{
sl@0: 				args++;
sl@0: 				contfile = *args;
sl@0: 				}
sl@0: 			else
sl@0: 				badarg = 1;
sl@0: 			}
sl@0: 		else if (args_verify(&args, NULL, &badarg, bio_err, &vpm))
sl@0: 			continue;
sl@0: 		else
sl@0: 			badarg = 1;
sl@0: 		args++;
sl@0: 		}
sl@0: 
sl@0: 
sl@0: 	if (operation == SMIME_SIGN)
sl@0: 		{
sl@0: 		if (!signerfile)
sl@0: 			{
sl@0: 			BIO_printf(bio_err, "No signer certificate specified\n");
sl@0: 			badarg = 1;
sl@0: 			}
sl@0: 		need_rand = 1;
sl@0: 		}
sl@0: 	else if (operation == SMIME_DECRYPT)
sl@0: 		{
sl@0: 		if (!recipfile && !keyfile)
sl@0: 			{
sl@0: 			BIO_printf(bio_err, "No recipient certificate or key specified\n");
sl@0: 			badarg = 1;
sl@0: 			}
sl@0: 		}
sl@0: 	else if (operation == SMIME_ENCRYPT)
sl@0: 		{
sl@0: 		if (!*args)
sl@0: 			{
sl@0: 			BIO_printf(bio_err, "No recipient(s) certificate(s) specified\n");
sl@0: 			badarg = 1;
sl@0: 			}
sl@0: 		need_rand = 1;
sl@0: 		}
sl@0: 	else if (!operation)
sl@0: 		badarg = 1;
sl@0: 
sl@0: 	if (badarg)
sl@0: 		{
sl@0: 		BIO_printf (bio_err, "Usage smime [options] cert.pem ...\n");
sl@0: 		BIO_printf (bio_err, "where options are\n");
sl@0: 		BIO_printf (bio_err, "-encrypt       encrypt message\n");
sl@0: 		BIO_printf (bio_err, "-decrypt       decrypt encrypted message\n");
sl@0: 		BIO_printf (bio_err, "-sign          sign message\n");
sl@0: 		BIO_printf (bio_err, "-verify        verify signed message\n");
sl@0: 		BIO_printf (bio_err, "-pk7out        output PKCS#7 structure\n");
sl@0: #ifndef OPENSSL_NO_DES
sl@0: 		BIO_printf (bio_err, "-des3          encrypt with triple DES\n");
sl@0: 		BIO_printf (bio_err, "-des           encrypt with DES\n");
sl@0: #endif
sl@0: #ifndef OPENSSL_NO_RC2
sl@0: 		BIO_printf (bio_err, "-rc2-40        encrypt with RC2-40 (default)\n");
sl@0: 		BIO_printf (bio_err, "-rc2-64        encrypt with RC2-64\n");
sl@0: 		BIO_printf (bio_err, "-rc2-128       encrypt with RC2-128\n");
sl@0: #endif
sl@0: #ifndef OPENSSL_NO_AES
sl@0: 		BIO_printf (bio_err, "-aes128, -aes192, -aes256\n");
sl@0: 		BIO_printf (bio_err, "               encrypt PEM output with cbc aes\n");
sl@0: #endif
sl@0: 		BIO_printf (bio_err, "-nointern      don't search certificates in message for signer\n");
sl@0: 		BIO_printf (bio_err, "-nosigs        don't verify message signature\n");
sl@0: 		BIO_printf (bio_err, "-noverify      don't verify signers certificate\n");
sl@0: 		BIO_printf (bio_err, "-nocerts       don't include signers certificate when signing\n");
sl@0: 		BIO_printf (bio_err, "-nodetach      use opaque signing\n");
sl@0: 		BIO_printf (bio_err, "-noattr        don't include any signed attributes\n");
sl@0: 		BIO_printf (bio_err, "-binary        don't translate message to text\n");
sl@0: 		BIO_printf (bio_err, "-certfile file other certificates file\n");
sl@0: 		BIO_printf (bio_err, "-signer file   signer certificate file\n");
sl@0: 		BIO_printf (bio_err, "-recip  file   recipient certificate file for decryption\n");
sl@0: 		BIO_printf (bio_err, "-in file       input file\n");
sl@0: 		BIO_printf (bio_err, "-inform arg    input format SMIME (default), PEM or DER\n");
sl@0: 		BIO_printf (bio_err, "-inkey file    input private key (if not signer or recipient)\n");
sl@0: 		BIO_printf (bio_err, "-keyform arg   input private key format (PEM or ENGINE)\n");
sl@0: 		BIO_printf (bio_err, "-out file      output file\n");
sl@0: 		BIO_printf (bio_err, "-outform arg   output format SMIME (default), PEM or DER\n");
sl@0: 		BIO_printf (bio_err, "-content file  supply or override content for detached signature\n");
sl@0: 		BIO_printf (bio_err, "-to addr       to address\n");
sl@0: 		BIO_printf (bio_err, "-from ad       from address\n");
sl@0: 		BIO_printf (bio_err, "-subject s     subject\n");
sl@0: 		BIO_printf (bio_err, "-text          include or delete text MIME headers\n");
sl@0: 		BIO_printf (bio_err, "-CApath dir    trusted certificates directory\n");
sl@0: 		BIO_printf (bio_err, "-CAfile file   trusted certificates file\n");
sl@0: 		BIO_printf (bio_err, "-crl_check     check revocation status of signer's certificate using CRLs\n");
sl@0: 		BIO_printf (bio_err, "-crl_check_all check revocation status of signer's certificate chain using CRLs\n");
sl@0: #ifndef OPENSSL_NO_ENGINE
sl@0: 		BIO_printf (bio_err, "-engine e      use engine e, possibly a hardware device.\n");
sl@0: #endif
sl@0: 		BIO_printf (bio_err, "-passin arg    input file pass phrase source\n");
sl@0: 		BIO_printf(bio_err,  "-rand file%cfile%c...\n", LIST_SEPARATOR_CHAR, LIST_SEPARATOR_CHAR);
sl@0: 		BIO_printf(bio_err,  "               load the file (or the files in the directory) into\n");
sl@0: 		BIO_printf(bio_err,  "               the random number generator\n");
sl@0: 		BIO_printf (bio_err, "cert.pem       recipient certificate(s) for encryption\n");
sl@0: 		goto end;
sl@0: 		}
sl@0: 
sl@0: #ifndef OPENSSL_NO_ENGINE
sl@0:         e = setup_engine(bio_err, engine, 0);
sl@0: #endif
sl@0: 
sl@0: 	if (!app_passwd(bio_err, passargin, NULL, &passin, NULL))
sl@0: 		{
sl@0: 		BIO_printf(bio_err, "Error getting password\n");
sl@0: 		goto end;
sl@0: 		}
sl@0: 
sl@0: 	if (need_rand)
sl@0: 		{
sl@0: 		app_RAND_load_file(NULL, bio_err, (inrand != NULL));
sl@0: 		if (inrand != NULL)
sl@0: 			BIO_printf(bio_err,"%ld semi-random bytes loaded\n",
sl@0: 				app_RAND_load_files(inrand));
sl@0: 		}
sl@0: 
sl@0: 	ret = 2;
sl@0: 
sl@0: 	if (operation != SMIME_SIGN)
sl@0: 		flags &= ~PKCS7_DETACHED;
sl@0: 
sl@0: 	if (operation & SMIME_OP)
sl@0: 		{
sl@0: 		if (flags & PKCS7_BINARY)
sl@0: 			inmode = "rb";
sl@0: 		if (outformat == FORMAT_ASN1)
sl@0: 			outmode = "wb";
sl@0: 		}
sl@0: 	else
sl@0: 		{
sl@0: 		if (flags & PKCS7_BINARY)
sl@0: 			outmode = "wb";
sl@0: 		if (informat == FORMAT_ASN1)
sl@0: 			inmode = "rb";
sl@0: 		}
sl@0: 
sl@0: 	if (operation == SMIME_ENCRYPT)
sl@0: 		{
sl@0: 		if (!cipher)
sl@0: 			{
sl@0: #ifndef OPENSSL_NO_RC2			
sl@0: 			cipher = EVP_rc2_40_cbc();
sl@0: #else
sl@0: 			BIO_printf(bio_err, "No cipher selected\n");
sl@0: 			goto end;
sl@0: #endif
sl@0: 			}
sl@0: 		encerts = sk_X509_new_null();
sl@0: 		while (*args)
sl@0: 			{
sl@0: 			if (!(cert = load_cert(bio_err,*args,FORMAT_PEM,
sl@0: 				NULL, e, "recipient certificate file")))
sl@0: 				{
sl@0: #if 0				/* An appropriate message is already printed */
sl@0: 				BIO_printf(bio_err, "Can't read recipient certificate file %s\n", *args);
sl@0: #endif
sl@0: 				goto end;
sl@0: 				}
sl@0: 			sk_X509_push(encerts, cert);
sl@0: 			cert = NULL;
sl@0: 			args++;
sl@0: 			}
sl@0: 		}
sl@0: 
sl@0: 	if (signerfile && (operation == SMIME_SIGN))
sl@0: 		{
sl@0: 		if (!(signer = load_cert(bio_err,signerfile,FORMAT_PEM, NULL,
sl@0: 			e, "signer certificate")))
sl@0: 			{
sl@0: #if 0			/* An appropri message has already been printed */
sl@0: 			BIO_printf(bio_err, "Can't read signer certificate file %s\n", signerfile);
sl@0: #endif
sl@0: 			goto end;
sl@0: 			}
sl@0: 		}
sl@0: 
sl@0: 	if (certfile)
sl@0: 		{
sl@0: 		if (!(other = load_certs(bio_err,certfile,FORMAT_PEM, NULL,
sl@0: 			e, "certificate file")))
sl@0: 			{
sl@0: #if 0			/* An appropriate message has already been printed */
sl@0: 			BIO_printf(bio_err, "Can't read certificate file %s\n", certfile);
sl@0: #endif
sl@0: 			ERR_print_errors(bio_err);
sl@0: 			goto end;
sl@0: 			}
sl@0: 		}
sl@0: 
sl@0: 	if (recipfile && (operation == SMIME_DECRYPT))
sl@0: 		{
sl@0: 		if (!(recip = load_cert(bio_err,recipfile,FORMAT_PEM,NULL,
sl@0: 			e, "recipient certificate file")))
sl@0: 			{
sl@0: #if 0			/* An appropriate message has alrady been printed */
sl@0: 			BIO_printf(bio_err, "Can't read recipient certificate file %s\n", recipfile);
sl@0: #endif
sl@0: 			ERR_print_errors(bio_err);
sl@0: 			goto end;
sl@0: 			}
sl@0: 		}
sl@0: 
sl@0: 	if (operation == SMIME_DECRYPT)
sl@0: 		{
sl@0: 		if (!keyfile)
sl@0: 			keyfile = recipfile;
sl@0: 		}
sl@0: 	else if (operation == SMIME_SIGN)
sl@0: 		{
sl@0: 		if (!keyfile)
sl@0: 			keyfile = signerfile;
sl@0: 		}
sl@0: 	else keyfile = NULL;
sl@0: 
sl@0: 	if (keyfile)
sl@0: 		{
sl@0: 		key = load_key(bio_err, keyfile, keyform, 0, passin, e,
sl@0: 			       "signing key file");
sl@0: 		if (!key)
sl@0: 			goto end;
sl@0: 		}
sl@0: 
sl@0: 	if (infile)
sl@0: 		{
sl@0: 		if (!(in = BIO_new_file(infile, inmode)))
sl@0: 			{
sl@0: 			BIO_printf (bio_err,
sl@0: 				 "Can't open input file %s\n", infile);
sl@0: 			goto end;
sl@0: 			}
sl@0: 		}
sl@0: 	else
sl@0: 		in = BIO_new_fp(stdin, BIO_NOCLOSE);
sl@0: 	
sl@0: 
sl@0: 	if (outfile)
sl@0: 		{
sl@0: 		if (!(out = BIO_new_file(outfile, outmode)))
sl@0: 			{
sl@0: 			BIO_printf (bio_err,
sl@0: 				 "Can't open output file %s\n", outfile);
sl@0: 			goto end;
sl@0: 			}
sl@0: 		}
sl@0: 	else
sl@0: 		{
sl@0: 		out = BIO_new_fp(stdout, BIO_NOCLOSE);
sl@0: 
sl@0: #ifdef OPENSSL_SYS_VMS
sl@0: 		{
sl@0: 		    BIO *tmpbio = BIO_new(BIO_f_linebuffer());
sl@0: 		    out = BIO_push(tmpbio, out);
sl@0: 		}
sl@0: #endif
sl@0: 		}
sl@0: 
sl@0: 	if (operation == SMIME_VERIFY)
sl@0: 		{
sl@0: 		if (!(store = setup_verify(bio_err, CAfile, CApath)))
sl@0: 			goto end;
sl@0: 		X509_STORE_set_verify_cb_func(store, smime_cb);
sl@0: 		if (vpm)
sl@0: 			X509_STORE_set1_param(store, vpm);
sl@0: 		}
sl@0: 
sl@0: 
sl@0: 	ret = 3;
sl@0: 
sl@0: 	if (operation == SMIME_ENCRYPT)
sl@0: 		p7 = PKCS7_encrypt(encerts, in, cipher, flags);
sl@0: 	else if (operation == SMIME_SIGN)
sl@0: 		{
sl@0: 		/* If detached data and SMIME output enable partial
sl@0: 		 * signing.
sl@0: 		 */
sl@0: 		if ((flags & PKCS7_DETACHED) && (outformat == FORMAT_SMIME))
sl@0: 			flags |= PKCS7_STREAM;
sl@0: 		p7 = PKCS7_sign(signer, key, other, in, flags);
sl@0: 		}
sl@0: 	else
sl@0: 		{
sl@0: 		if (informat == FORMAT_SMIME) 
sl@0: 			p7 = SMIME_read_PKCS7(in, &indata);
sl@0: 		else if (informat == FORMAT_PEM) 
sl@0: 			p7 = PEM_read_bio_PKCS7(in, NULL, NULL, NULL);
sl@0: 		else if (informat == FORMAT_ASN1) 
sl@0: 			p7 = d2i_PKCS7_bio(in, NULL);
sl@0: 		else
sl@0: 			{
sl@0: 			BIO_printf(bio_err, "Bad input format for PKCS#7 file\n");
sl@0: 			goto end;
sl@0: 			}
sl@0: 
sl@0: 		if (!p7)
sl@0: 			{
sl@0: 			BIO_printf(bio_err, "Error reading S/MIME message\n");
sl@0: 			goto end;
sl@0: 			}
sl@0: 		if (contfile)
sl@0: 			{
sl@0: 			BIO_free(indata);
sl@0: 			if (!(indata = BIO_new_file(contfile, "rb")))
sl@0: 				{
sl@0: 				BIO_printf(bio_err, "Can't read content file %s\n", contfile);
sl@0: 				goto end;
sl@0: 				}
sl@0: 			}
sl@0: 		}
sl@0: 
sl@0: 	if (!p7)
sl@0: 		{
sl@0: 		BIO_printf(bio_err, "Error creating PKCS#7 structure\n");
sl@0: 		goto end;
sl@0: 		}
sl@0: 
sl@0: 	ret = 4;
sl@0: 	if (operation == SMIME_DECRYPT)
sl@0: 		{
sl@0: 		if (!PKCS7_decrypt(p7, key, recip, out, flags))
sl@0: 			{
sl@0: 			BIO_printf(bio_err, "Error decrypting PKCS#7 structure\n");
sl@0: 			goto end;
sl@0: 			}
sl@0: 		}
sl@0: 	else if (operation == SMIME_VERIFY)
sl@0: 		{
sl@0: 		STACK_OF(X509) *signers;
sl@0: 		if (PKCS7_verify(p7, other, store, indata, out, flags))
sl@0: 			BIO_printf(bio_err, "Verification successful\n");
sl@0: 		else
sl@0: 			{
sl@0: 			BIO_printf(bio_err, "Verification failure\n");
sl@0: 			goto end;
sl@0: 			}
sl@0: 		signers = PKCS7_get0_signers(p7, other, flags);
sl@0: 		if (!save_certs(signerfile, signers))
sl@0: 			{
sl@0: 			BIO_printf(bio_err, "Error writing signers to %s\n",
sl@0: 								signerfile);
sl@0: 			ret = 5;
sl@0: 			goto end;
sl@0: 			}
sl@0: 		sk_X509_free(signers);
sl@0: 		}
sl@0: 	else if (operation == SMIME_PK7OUT)
sl@0: 		PEM_write_bio_PKCS7(out, p7);
sl@0: 	else
sl@0: 		{
sl@0: 		if (to)
sl@0: 			BIO_printf(out, "To: %s\n", to);
sl@0: 		if (from)
sl@0: 			BIO_printf(out, "From: %s\n", from);
sl@0: 		if (subject)
sl@0: 			BIO_printf(out, "Subject: %s\n", subject);
sl@0: 		if (outformat == FORMAT_SMIME) 
sl@0: 			SMIME_write_PKCS7(out, p7, in, flags);
sl@0: 		else if (outformat == FORMAT_PEM) 
sl@0: 			PEM_write_bio_PKCS7(out,p7);
sl@0: 		else if (outformat == FORMAT_ASN1) 
sl@0: 			i2d_PKCS7_bio(out,p7);
sl@0: 		else
sl@0: 			{
sl@0: 			BIO_printf(bio_err, "Bad output format for PKCS#7 file\n");
sl@0: 			goto end;
sl@0: 			}
sl@0: 		}
sl@0: 	ret = 0;
sl@0: end:
sl@0: 	if (need_rand)
sl@0: 		app_RAND_write_file(NULL, bio_err);
sl@0: 	if (ret) ERR_print_errors(bio_err);
sl@0: 	sk_X509_pop_free(encerts, X509_free);
sl@0: 	sk_X509_pop_free(other, X509_free);
sl@0: 	if (vpm)
sl@0: 		X509_VERIFY_PARAM_free(vpm);
sl@0: 	X509_STORE_free(store);
sl@0: 	X509_free(cert);
sl@0: 	X509_free(recip);
sl@0: 	X509_free(signer);
sl@0: 	EVP_PKEY_free(key);
sl@0: 	PKCS7_free(p7);
sl@0: 	BIO_free(in);
sl@0: 	BIO_free(indata);
sl@0: 	BIO_free_all(out);
sl@0: 	if (passin) OPENSSL_free(passin);
sl@0: 	return (ret);
sl@0: }
sl@0: 
sl@0: static int save_certs(char *signerfile, STACK_OF(X509) *signers)
sl@0: 	{
sl@0: 	int i;
sl@0: 	BIO *tmp;
sl@0: 	if (!signerfile)
sl@0: 		return 1;
sl@0: 	tmp = BIO_new_file(signerfile, "w");
sl@0: 	if (!tmp) return 0;
sl@0: 	for(i = 0; i < sk_X509_num(signers); i++)
sl@0: 		PEM_write_bio_X509(tmp, sk_X509_value(signers, i));
sl@0: 	BIO_free(tmp);
sl@0: 	return 1;
sl@0: 	}
sl@0: 	
sl@0: 
sl@0: /* Minimal callback just to output policy info (if any) */
sl@0: 
sl@0: static int smime_cb(int ok, X509_STORE_CTX *ctx)
sl@0: 	{
sl@0: 	int error;
sl@0: 
sl@0: 	error = X509_STORE_CTX_get_error(ctx);
sl@0: 
sl@0: 	if ((error != X509_V_ERR_NO_EXPLICIT_POLICY)
sl@0: 		&& ((error != X509_V_OK) || (ok != 2)))
sl@0: 		return ok;
sl@0: 
sl@0: 	policies_print(NULL, ctx);
sl@0: 
sl@0: 	return ok;
sl@0: 
sl@0: 	}