[thirdparty/openssl.git] / apps / smime.c

/* smime.c */
/* Written by Dr Stephen N Henson (shenson@bigfoot.com) for the OpenSSL
 * project 1999.
 */
/* ====================================================================
 * Copyright (c) 1999 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).
 *
 */

/* S/MIME utility function */

#include <stdio.h>
#include <string.h>
#include <openssl/pem.h>
#include <openssl/err.h>
#include "apps.h"

#undef PROG
#define PROG smime_main
static X509 *load_cert(char *file);
static EVP_PKEY *load_key(char *file);
static STACK_OF(X509) *load_certs(char *file);
static X509_STORE *setup_verify(char *CAfile, char *CApath);
static int save_certs(char *signerfile, STACK_OF(X509) *signers);

#define SMIME_OP	0x10
#define SMIME_ENCRYPT	(1 | SMIME_OP)
#define SMIME_DECRYPT	2
#define SMIME_SIGN	(3 | SMIME_OP)
#define SMIME_VERIFY	4
#define SMIME_PK7OUT	5

int MAIN(int argc, char **argv)
{
	int operation = 0;
	int ret = 0;
	char **args;
	char *inmode = "r", *outmode = "w";
	char *infile = NULL, *outfile = NULL;
	char *signerfile = NULL, *recipfile = NULL;
	char *certfile = NULL, *keyfile = NULL;
	EVP_CIPHER *cipher = NULL;
	PKCS7 *p7 = NULL;
	X509_STORE *store = NULL;
	X509 *cert = NULL, *recip = NULL, *signer = NULL;
	EVP_PKEY *key = NULL;
	STACK_OF(X509) *encerts = NULL, *other = NULL;
	BIO *in = NULL, *out = NULL, *indata = NULL;
	int badarg = 0;
	int flags = PKCS7_DETACHED;
	char *to = NULL, *from = NULL, *subject = NULL;
	char *CAfile = NULL, *CApath = NULL;

	args = argv + 1;

	ret = 1;

	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;
		else if (!strcmp (*args, "-verify")) operation = SMIME_VERIFY;
		else if (!strcmp (*args, "-pk7out")) operation = SMIME_PK7OUT;
		else if (!strcmp (*args, "-des3")) 
				cipher = EVP_des_ede3_cbc();
		else if (!strcmp (*args, "-des")) 
				cipher = EVP_des_cbc();
		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();
		else if (!strcmp (*args, "-text")) 
				flags |= PKCS7_TEXT;
		else if (!strcmp (*args, "-nointern")) 
				flags |= PKCS7_NOINTERN;
		else if (!strcmp (*args, "-noverify")) 
				flags |= PKCS7_NOVERIFY;
		else if (!strcmp (*args, "-nochain")) 
				flags |= PKCS7_NOCHAIN;
		else if (!strcmp (*args, "-nocerts")) 
				flags |= PKCS7_NOCERTS;
		else if (!strcmp (*args, "-noattr")) 
				flags |= PKCS7_NOATTR;
		else if (!strcmp (*args, "-nodetach")) 
				flags &= ~PKCS7_DETACHED;
		else if (!strcmp (*args, "-binary"))
				flags |= PKCS7_BINARY;
		else if (!strcmp (*args, "-nosigs"))
				flags |= PKCS7_NOSIGS;
		else if (!strcmp (*args, "-to")) {
			if (args[1]) {
				args++;
				to = *args;
			} else badarg = 1;
		} else if (!strcmp (*args, "-from")) {
			if (args[1]) {
				args++;
				from = *args;
			} else badarg = 1;
		} else if (!strcmp (*args, "-subject")) {
			if (args[1]) {
				args++;
				subject = *args;
			} else badarg = 1;
		} else if (!strcmp (*args, "-signer")) {
			if (args[1]) {
				args++;
				signerfile = *args;
			} else badarg = 1;
		} else if (!strcmp (*args, "-recip")) {
			if (args[1]) {
				args++;
				recipfile = *args;
			} else badarg = 1;
		} else if (!strcmp (*args, "-inkey")) {
			if (args[1]) {
				args++;
				keyfile = *args;
			} else badarg = 1;
		} else if (!strcmp (*args, "-certfile")) {
			if (args[1]) {
				args++;
				certfile = *args;
			} else badarg = 1;
		} else if (!strcmp (*args, "-CAfile")) {
			if (args[1]) {
				args++;
				CAfile = *args;
			} else badarg = 1;
		} else if (!strcmp (*args, "-CApath")) {
			if (args[1]) {
				args++;
				CApath = *args;
			} else badarg = 1;
		} else if (!strcmp (*args, "-in")) {
			if (args[1]) {
				args++;
				infile = *args;
			} else badarg = 1;
		} else if (!strcmp (*args, "-out")) {
			if (args[1]) {
				args++;
				outfile = *args;
			} else badarg = 1;
		} else badarg = 1;
		args++;
	}

	if(operation == SMIME_SIGN) {
		if(!signerfile) {
			BIO_printf(bio_err, "No signer certificate specified\n");
			badarg = 1;
		}
	} else if(operation == SMIME_DECRYPT) {
		if(!recipfile) {
			BIO_printf(bio_err, "No recipient certificate and key specified\n");
			badarg = 1;
		}
	} else if(operation == SMIME_ENCRYPT) {
		if(!*args) {
			BIO_printf(bio_err, "No recipient(s) certificate(s) specified\n");
			badarg = 1;
		}
	} else if(!operation) badarg = 1;

	if (badarg) {
		BIO_printf (bio_err, "Usage smime [options] cert.pem ...\n");
		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, "-pk7out        output PKCS#7 structure\n");
		BIO_printf (bio_err, "-des3          encrypt with triple DES\n");
		BIO_printf (bio_err, "-rc2-40        encrypt with RC2-40\n");
		BIO_printf (bio_err, "-rc2-64        encrypt with RC2-64\n");
		BIO_printf (bio_err, "-rc2-128       encrypt with RC2-128\n");
		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, "-in file       input file\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\n");
		BIO_printf (bio_err, "-in file       input file\n");
		BIO_printf (bio_err, "-inkey file    input private key (if not signer or recipient)\n");
		BIO_printf (bio_err, "-out file      output file\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, "cert.pem       recipient certificate(s)\n");
		goto end;
	}

	ret = 2;

	if(operation != SMIME_SIGN) flags &= ~PKCS7_DETACHED;

	if(flags & PKCS7_BINARY) {
		if(operation & SMIME_OP) inmode = "rb";
		else outmode = "rb";
	}

	if(operation == SMIME_ENCRYPT) {
		if (!cipher) cipher = EVP_rc2_40_cbc();
		encerts = sk_X509_new_null();
		while (*args) {
			if(!(cert = load_cert(*args))) {
				BIO_printf(bio_err, "Can't read recipent certificate file %s\n", *args);
				goto end;
			}
			sk_X509_push(encerts, cert);
			cert = NULL;
			args++;
		}
	}

	if(signerfile && (operation == SMIME_SIGN)) {
		if(!(signer = load_cert(signerfile))) {
			BIO_printf(bio_err, "Can't read signer certificate file %s\n", signerfile);
			goto end;
		}
	}

	if(certfile) {
		if(!(other = load_certs(certfile))) {
			BIO_printf(bio_err, "Can't read certificate file %s\n", certfile);
			ERR_print_errors(bio_err);
			goto end;
		}
	}

	if(recipfile && (operation == SMIME_DECRYPT)) {
		if(!(recip = load_cert(recipfile))) {
			BIO_printf(bio_err, "Can't read recipient certificate file %s\n", recipfile);
			ERR_print_errors(bio_err);
			goto end;
		}
	}

	if(operation == SMIME_DECRYPT) {
		if(!keyfile) keyfile = recipfile;
	} else if(operation == SMIME_SIGN) {
		if(!keyfile) keyfile = signerfile;
	} else keyfile = NULL;

	if(keyfile) {
		if(!(key = load_key(keyfile))) {
			BIO_printf(bio_err, "Can't read recipient certificate file %s\n", keyfile);
			ERR_print_errors(bio_err);
			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 (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);

	if(operation == SMIME_VERIFY)
		if(!(store = setup_verify(CAfile, CApath))) goto end;

	ret = 3;

	if(operation == SMIME_ENCRYPT) {
		p7 = PKCS7_encrypt(encerts, in, cipher, flags);
	} else if(operation == SMIME_SIGN) {
		p7 = PKCS7_sign(signer, key, other, in, flags);
		BIO_reset(in);
	} else {
		if(!(p7 = SMIME_read_PKCS7(in, &indata))) {
			BIO_printf(bio_err, "Error reading S/MIME message\n");
			goto end;
		}
	}

	if(!p7) {
		BIO_printf(bio_err, "Error creating PKCS#7 structure\n");
		goto end;
	}

	ret = 4;
	if(operation == SMIME_DECRYPT) {
		if(!PKCS7_decrypt(p7, key, recip, out, flags)) {
			BIO_printf(bio_err, "Error decrypting PKCS#7 structure\n");
			goto end;
		}
	} else if(operation == SMIME_VERIFY) {
		STACK_OF(X509) *signers;
		if(PKCS7_verify(p7, other, store, indata, out, flags)) {
			BIO_printf(bio_err, "Verification Successful\n");
		} else {
			BIO_printf(bio_err, "Verification Failure\n");
			goto end;
		}
		signers = PKCS7_iget_signers(p7, other, flags);
		if(!save_certs(signerfile, signers)) {
			BIO_printf(bio_err, "Error writing signers to %s\n",
								signerfile);
			ret = 5;
			goto end;
		}
		sk_X509_free(signers);
	} else if(operation == SMIME_PK7OUT) {
		PEM_write_bio_PKCS7(out, p7);
	} else {
		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);
		SMIME_write_PKCS7(out, p7, in, flags);
	}
	ret = 0;
end:
	if(ret) ERR_print_errors(bio_err);
	sk_X509_pop_free(encerts, X509_free);
	sk_X509_pop_free(other, X509_free);
	X509_STORE_free(store);
	X509_free(cert);
	X509_free(recip);
	X509_free(signer);
	EVP_PKEY_free(key);
	PKCS7_free(p7);
	BIO_free(in);
	BIO_free(indata);
	BIO_free(out);
	return (ret);
}

static X509 *load_cert(char *file)
{
	BIO *in;
	X509 *cert;
	if(!(in = BIO_new_file(file, "r"))) return NULL;
	cert = PEM_read_bio_X509(in, NULL, NULL,NULL);
	BIO_free(in);
	return cert;
}

static EVP_PKEY *load_key(char *file)
{
	BIO *in;
	EVP_PKEY *key;
	if(!(in = BIO_new_file(file, "r"))) return NULL;
	key = PEM_read_bio_PrivateKey(in, NULL, NULL,NULL);
	BIO_free(in);
	return key;
}

static STACK_OF(X509) *load_certs(char *file)
{
	BIO *in;
	int i;
	STACK_OF(X509) *othercerts;
	STACK_OF(X509_INFO) *allcerts;
	X509_INFO *xi;
	if(!(in = BIO_new_file(file, "r"))) return NULL;
	othercerts = sk_X509_new(NULL);
	if(!othercerts) return NULL;
	allcerts = PEM_X509_INFO_read_bio(in, NULL, NULL, NULL);
	for(i = 0; i < sk_X509_INFO_num(allcerts); i++) {
		xi = sk_X509_INFO_value (allcerts, i);
		if (xi->x509) {
			sk_X509_push(othercerts, xi->x509);
			xi->x509 = NULL;
		}
	}
	sk_X509_INFO_pop_free(allcerts, X509_INFO_free);
	BIO_free(in);
	return othercerts;
}

static X509_STORE *setup_verify(char *CAfile, char *CApath)
{
	X509_STORE *store;
	X509_LOOKUP *lookup;
	if(!(store = X509_STORE_new())) goto end;
	lookup=X509_STORE_add_lookup(store,X509_LOOKUP_file());
	if (lookup == NULL) goto end;
	if (CAfile) {
		if(!X509_LOOKUP_load_file(lookup,CAfile,X509_FILETYPE_PEM)) {
			BIO_printf(bio_err, "Error loading file %s\n", CAfile);
			goto end;
		}
	} else X509_LOOKUP_load_file(lookup,NULL,X509_FILETYPE_DEFAULT);
		
	lookup=X509_STORE_add_lookup(store,X509_LOOKUP_hash_dir());
	if (lookup == NULL) goto end;
	if (CApath) {
		if(!X509_LOOKUP_add_dir(lookup,CApath,X509_FILETYPE_PEM)) {
			BIO_printf(bio_err, "Error loading directory %s\n", CApath);
			goto end;
		}
	} else X509_LOOKUP_add_dir(lookup,NULL,X509_FILETYPE_DEFAULT);

	ERR_clear_error();
	return store;
	end:
	X509_STORE_free(store);
	return NULL;
}

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;
}
Commit	Line	Data
5a9a4b29 DSH	1	/* smime.c */
	2	/* Written by Dr Stephen N Henson (shenson@bigfoot.com) for the OpenSSL
	3	* project 1999.
	4	*/
	5	/* ====================================================================
	6	* Copyright (c) 1999 The OpenSSL Project. All rights reserved.
	7	*
	8	* Redistribution and use in source and binary forms, with or without
	9	* modification, are permitted provided that the following conditions
	10	* are met:
	11	*
	12	* 1. Redistributions of source code must retain the above copyright
	13	* notice, this list of conditions and the following disclaimer.
	14	*
	15	* 2. Redistributions in binary form must reproduce the above copyright
	16	* notice, this list of conditions and the following disclaimer in
	17	* the documentation and/or other materials provided with the
	18	* distribution.
	19	*
	20	* 3. All advertising materials mentioning features or use of this
	21	* software must display the following acknowledgment:
	22	* "This product includes software developed by the OpenSSL Project
	23	* for use in the OpenSSL Toolkit. (http://www.OpenSSL.org/)"
	24	*
	25	* 4. The names "OpenSSL Toolkit" and "OpenSSL Project" must not be used to
	26	* endorse or promote products derived from this software without
	27	* prior written permission. For written permission, please contact
	28	* licensing@OpenSSL.org.
	29	*
	30	* 5. Products derived from this software may not be called "OpenSSL"
	31	* nor may "OpenSSL" appear in their names without prior written
	32	* permission of the OpenSSL Project.
	33	*
	34	* 6. Redistributions of any form whatsoever must retain the following
	35	* acknowledgment:
	36	* "This product includes software developed by the OpenSSL Project
	37	* for use in the OpenSSL Toolkit (http://www.OpenSSL.org/)"
	38	*
	39	* THIS SOFTWARE IS PROVIDED BY THE OpenSSL PROJECT ``AS IS'' AND ANY
	40	* EXPRESSED OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
	41	* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
	42	* PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE OpenSSL PROJECT OR
	43	* ITS CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
	44	* SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
	45	* NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
	46	* LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
	47	* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT,
	48	* STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
	49	* ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED
	50	* OF THE POSSIBILITY OF SUCH DAMAGE.
	51	* ====================================================================
	52	*
	53	* This product includes cryptographic software written by Eric Young
	54	* (eay@cryptsoft.com). This product includes software written by Tim
	55	* Hudson (tjh@cryptsoft.com).
	56	*
	57	*/
	58
	59	/* S/MIME utility function */
	60
	61	#include <stdio.h>
	62	#include <string.h>
	63	#include <openssl/pem.h>
	64	#include <openssl/err.h>
65	#include "apps.h"
66
67	#undef PROG
68	#define PROG smime_main
69	static X509 load_cert(char file);
70	static EVP_PKEY load_key(char file);
71	static STACK_OF(X509) load_certs(char file);
72	static X509_STORE setup_verify(char CAfile, char *CApath);
55ec5861	73	static int save_certs(char signerfile, STACK_OF(X509) signers);
5a9a4b29 DSH	74
	75	#define SMIME_OP 0x10
	76	#define SMIME_ENCRYPT (1 \| SMIME_OP)
	77	#define SMIME_DECRYPT 2
	78	#define SMIME_SIGN (3 \| SMIME_OP)
	79	#define SMIME_VERIFY 4
	80	#define SMIME_PK7OUT 5
	81
	82	int MAIN(int argc, char **argv)
	83	{
	84	int operation = 0;
	85	int ret = 0;
	86	char **args;
	87	char inmode = "r", outmode = "w";
	88	char infile = NULL, outfile = NULL;
	89	char signerfile = NULL, recipfile = NULL;
	90	char certfile = NULL, keyfile = NULL;
	91	EVP_CIPHER *cipher = NULL;
	92	PKCS7 *p7 = NULL;
	93	X509_STORE *store = NULL;
	94	X509 cert = NULL, recip = NULL, *signer = NULL;
	95	EVP_PKEY *key = NULL;
	96	STACK_OF(X509) encerts = NULL, other = NULL;
	97	BIO in = NULL, out = NULL, *indata = NULL;
	98	int badarg = 0;
	99	int flags = PKCS7_DETACHED;
	100	char to = NULL, from = NULL, *subject = NULL;
	101	char CAfile = NULL, CApath = NULL;
	102
	103	args = argv + 1;
	104
	105	ret = 1;
	106
	107	while (!badarg && args && args[0] == '-') {
	108	if (!strcmp (*args, "-encrypt")) operation = SMIME_ENCRYPT;
	109	else if (!strcmp (*args, "-decrypt")) operation = SMIME_DECRYPT;
	110	else if (!strcmp (*args, "-sign")) operation = SMIME_SIGN;
	111	else if (!strcmp (*args, "-verify")) operation = SMIME_VERIFY;
	112	else if (!strcmp (*args, "-pk7out")) operation = SMIME_PK7OUT;
	113	else if (!strcmp (*args, "-des3"))
	114	cipher = EVP_des_ede3_cbc();
	115	else if (!strcmp (*args, "-des"))
	116	cipher = EVP_des_cbc();
	117	else if (!strcmp (*args, "-rc2-40"))
	118	cipher = EVP_rc2_40_cbc();
	119	else if (!strcmp (*args, "-rc2-128"))
	120	cipher = EVP_rc2_cbc();
	121	else if (!strcmp (*args, "-rc2-64"))
	122	cipher = EVP_rc2_64_cbc();
	123	else if (!strcmp (*args, "-text"))
	124	flags \|= PKCS7_TEXT;
	125	else if (!strcmp (*args, "-nointern"))
	126	flags \|= PKCS7_NOINTERN;
	127	else if (!strcmp (*args, "-noverify"))
	128	flags \|= PKCS7_NOVERIFY;
	129	else if (!strcmp (*args, "-nochain"))
	130	flags \|= PKCS7_NOCHAIN;
	131	else if (!strcmp (*args, "-nocerts"))
	132	flags \|= PKCS7_NOCERTS;
	133	else if (!strcmp (*args, "-noattr"))
	134	flags \|= PKCS7_NOATTR;
	135	else if (!strcmp (*args, "-nodetach"))
	136	flags &= ~PKCS7_DETACHED;
	137	else if (!strcmp (*args, "-binary"))
138	flags \|= PKCS7_BINARY;
e3775a33 DSH	139	else if (!strcmp (*args, "-nosigs"))
e3775a33 DSH	140	flags \|= PKCS7_NOSIGS;
5a9a4b29 DSH	141	else if (!strcmp (*args, "-to")) {
	142	if (args[1]) {
	143	args++;
	144	to = *args;
	145	} else badarg = 1;
	146	} else if (!strcmp (*args, "-from")) {
	147	if (args[1]) {
	148	args++;
	149	from = *args;
	150	} else badarg = 1;
	151	} else if (!strcmp (*args, "-subject")) {
	152	if (args[1]) {
	153	args++;
	154	subject = *args;
	155	} else badarg = 1;
	156	} else if (!strcmp (*args, "-signer")) {
	157	if (args[1]) {
	158	args++;
	159	signerfile = *args;
	160	} else badarg = 1;
	161	} else if (!strcmp (*args, "-recip")) {
	162	if (args[1]) {
	163	args++;
	164	recipfile = *args;
	165	} else badarg = 1;
	166	} else if (!strcmp (*args, "-inkey")) {
	167	if (args[1]) {
	168	args++;
	169	keyfile = *args;
	170	} else badarg = 1;
	171	} else if (!strcmp (*args, "-certfile")) {
	172	if (args[1]) {
	173	args++;
	174	certfile = *args;
	175	} else badarg = 1;
	176	} else if (!strcmp (*args, "-CAfile")) {
	177	if (args[1]) {
	178	args++;
	179	CAfile = *args;
	180	} else badarg = 1;
	181	} else if (!strcmp (*args, "-CApath")) {
	182	if (args[1]) {
	183	args++;
	184	CApath = *args;
	185	} else badarg = 1;
	186	} else if (!strcmp (*args, "-in")) {
	187	if (args[1]) {
	188	args++;
	189	infile = *args;
	190	} else badarg = 1;
	191	} else if (!strcmp (*args, "-out")) {
	192	if (args[1]) {
	193	args++;
	194	outfile = *args;
	195	} else badarg = 1;
	196	} else badarg = 1;
	197	args++;
	198	}
	199
	200	if(operation == SMIME_SIGN) {
	201	if(!signerfile) {
	202	BIO_printf(bio_err, "No signer certificate specified\n");
	203	badarg = 1;
	204	}
205	} else if(operation == SMIME_DECRYPT) {
206	if(!recipfile) {
207	BIO_printf(bio_err, "No recipient certificate and key specified\n");
208	badarg = 1;
209	}
210	} else if(operation == SMIME_ENCRYPT) {
211	if(!*args) {
212	BIO_printf(bio_err, "No recipient(s) certificate(s) specified\n");
213	badarg = 1;
214	}
215	} else if(!operation) badarg = 1;
216
217	if (badarg) {
218	BIO_printf (bio_err, "Usage smime [options] cert.pem ...\n");
219	BIO_printf (bio_err, "where options are\n");
220	BIO_printf (bio_err, "-encrypt encrypt message\n");
221	BIO_printf (bio_err, "-decrypt decrypt encrypted message\n");
222	BIO_printf (bio_err, "-sign sign message\n");
223	BIO_printf (bio_err, "-verify verify signed message\n");
224	BIO_printf (bio_err, "-pk7out output PKCS#7 structure\n");
225	BIO_printf (bio_err, "-des3 encrypt with triple DES\n");
226	BIO_printf (bio_err, "-rc2-40 encrypt with RC2-40\n");
227	BIO_printf (bio_err, "-rc2-64 encrypt with RC2-64\n");
228	BIO_printf (bio_err, "-rc2-128 encrypt with RC2-128\n");
e3775a33 DSH	229	BIO_printf (bio_err, "-nointern don't search certificates in message for signer\n");
	230	BIO_printf (bio_err, "-nosigs don't verify message signature\n");
	231	BIO_printf (bio_err, "-noverify don't verify signers certificate\n");
	232	BIO_printf (bio_err, "-nocerts don't include signers certificate when signing\n");
	233	BIO_printf (bio_err, "-nodetach use opaque signing\n");
	234	BIO_printf (bio_err, "-noattr don't include any signed attributes\n");
	235	BIO_printf (bio_err, "-binary don't translate message to text\n");
5a9a4b29 DSH	236	BIO_printf (bio_err, "-in file input file\n");
	237	BIO_printf (bio_err, "-certfile file other certificates file\n");
	238	BIO_printf (bio_err, "-signer file signer certificate file\n");
	239	BIO_printf (bio_err, "-recip file recipient certificate file\n");
	240	BIO_printf (bio_err, "-in file input file\n");
	241	BIO_printf (bio_err, "-inkey file input private key (if not signer or recipient)\n");
	242	BIO_printf (bio_err, "-out file output file\n");
	243	BIO_printf (bio_err, "-to addr to address\n");
	244	BIO_printf (bio_err, "-from ad from address\n");
	245	BIO_printf (bio_err, "-subject s subject\n");
	246	BIO_printf (bio_err, "-text include or delete text MIME headers\n");
e3775a33 DSH	247	BIO_printf (bio_err, "-CApath dir trusted certificates directory\n");
e3775a33 DSH	248	BIO_printf (bio_err, "-CAfile file trusted certificates file\n");
5a9a4b29 DSH	249	BIO_printf (bio_err, "cert.pem recipient certificate(s)\n");
	250	goto end;
	251	}
	252
	253	ret = 2;
	254
	255	if(operation != SMIME_SIGN) flags &= ~PKCS7_DETACHED;
	256
	257	if(flags & PKCS7_BINARY) {
	258	if(operation & SMIME_OP) inmode = "rb";
	259	else outmode = "rb";
	260	}
	261
	262	if(operation == SMIME_ENCRYPT) {
	263	if (!cipher) cipher = EVP_rc2_40_cbc();
55f30198	264	encerts = sk_X509_new_null();
5a9a4b29	265	while (*args) {
5a9a4b29 DSH	266	if(!(cert = load_cert(*args))) {
	267	BIO_printf(bio_err, "Can't read recipent certificate file %s\n", *args);
	268	goto end;
	269	}
55f30198	270	sk_X509_push(encerts, cert);
5a9a4b29 DSH	271	cert = NULL;
	272	args++;
	273	}
	274	}
	275
55ec5861	276	if(signerfile && (operation == SMIME_SIGN)) {
5a9a4b29 DSH	277	if(!(signer = load_cert(signerfile))) {
	278	BIO_printf(bio_err, "Can't read signer certificate file %s\n", signerfile);
	279	goto end;
	280	}
	281	}
	282
	283	if(certfile) {
	284	if(!(other = load_certs(certfile))) {
	285	BIO_printf(bio_err, "Can't read certificate file %s\n", certfile);
	286	ERR_print_errors(bio_err);
	287	goto end;
	288	}
	289	}
	290
55ec5861	291	if(recipfile && (operation == SMIME_DECRYPT)) {
5a9a4b29 DSH	292	if(!(recip = load_cert(recipfile))) {
	293	BIO_printf(bio_err, "Can't read recipient certificate file %s\n", recipfile);
	294	ERR_print_errors(bio_err);
	295	goto end;
	296	}
	297	}
	298
	299	if(operation == SMIME_DECRYPT) {
	300	if(!keyfile) keyfile = recipfile;
	301	} else if(operation == SMIME_SIGN) {
	302	if(!keyfile) keyfile = signerfile;
	303	} else keyfile = NULL;
	304
	305	if(keyfile) {
	306	if(!(key = load_key(keyfile))) {
	307	BIO_printf(bio_err, "Can't read recipient certificate file %s\n", keyfile);
	308	ERR_print_errors(bio_err);
	309	goto end;
	310	}
	311	}
	312
	313	if (infile) {
	314	if (!(in = BIO_new_file(infile, inmode))) {
	315	BIO_printf (bio_err,
	316	"Can't open input file %s\n", infile);
	317	goto end;
	318	}
	319	} else in = BIO_new_fp(stdin, BIO_NOCLOSE);
	320
	321	if (outfile) {
	322	if (!(out = BIO_new_file(outfile, outmode))) {
	323	BIO_printf (bio_err,
	324	"Can't open output file %s\n", outfile);
	325	goto end;
	326	}
	327	} else out = BIO_new_fp(stdout, BIO_NOCLOSE);
	328
	329	if(operation == SMIME_VERIFY)
	330	if(!(store = setup_verify(CAfile, CApath))) goto end;
	331
	332	ret = 3;
e3775a33	333
5a9a4b29 DSH	334	if(operation == SMIME_ENCRYPT) {
	335	p7 = PKCS7_encrypt(encerts, in, cipher, flags);
	336	} else if(operation == SMIME_SIGN) {
	337	p7 = PKCS7_sign(signer, key, other, in, flags);
	338	BIO_reset(in);
	339	} else {
	340	if(!(p7 = SMIME_read_PKCS7(in, &indata))) {
	341	BIO_printf(bio_err, "Error reading S/MIME message\n");
5a9a4b29 DSH	342	goto end;
	343	}
	344	}
e3775a33	345
5a9a4b29 DSH	346	if(!p7) {
	347	BIO_printf(bio_err, "Error creating PKCS#7 structure\n");
	348	goto end;
	349	}
	350
e3775a33	351	ret = 4;
5a9a4b29	352	if(operation == SMIME_DECRYPT) {
e3775a33	353	if(!PKCS7_decrypt(p7, key, recip, out, flags)) {
5a9a4b29	354	BIO_printf(bio_err, "Error decrypting PKCS#7 structure\n");
e3775a33 DSH	355	goto end;
e3775a33 DSH	356	}
5a9a4b29	357	} else if(operation == SMIME_VERIFY) {
55ec5861	358	STACK_OF(X509) *signers;
5a9a4b29 DSH	359	if(PKCS7_verify(p7, other, store, indata, out, flags)) {
5a9a4b29 DSH	360	BIO_printf(bio_err, "Verification Successful\n");
5a9a4b29 DSH	361	} else {
5a9a4b29 DSH	362	BIO_printf(bio_err, "Verification Failure\n");
e3775a33	363	goto end;
5a9a4b29	364	}
55f30198	365	signers = PKCS7_iget_signers(p7, other, flags);
55ec5861 DSH	366	if(!save_certs(signerfile, signers)) {
	367	BIO_printf(bio_err, "Error writing signers to %s\n",
	368	signerfile);
e3775a33 DSH	369	ret = 5;
e3775a33 DSH	370	goto end;
55ec5861 DSH	371	}
55ec5861 DSH	372	sk_X509_free(signers);
5a9a4b29 DSH	373	} else if(operation == SMIME_PK7OUT) {
	374	PEM_write_bio_PKCS7(out, p7);
	375	} else {
	376	if(to) BIO_printf(out, "To: %s\n", to);
	377	if(from) BIO_printf(out, "From: %s\n", from);
	378	if(subject) BIO_printf(out, "Subject: %s\n", subject);
	379	SMIME_write_PKCS7(out, p7, in, flags);
	380	}
e3775a33	381	ret = 0;
5a9a4b29 DSH	382	end:
	383	if(ret) ERR_print_errors(bio_err);
	384	sk_X509_pop_free(encerts, X509_free);
	385	sk_X509_pop_free(other, X509_free);
	386	X509_STORE_free(store);
	387	X509_free(cert);
	388	X509_free(recip);
	389	X509_free(signer);
	390	EVP_PKEY_free(key);
	391	PKCS7_free(p7);
	392	BIO_free(in);
	393	BIO_free(indata);
	394	BIO_free(out);
	395	return (ret);
	396	}
	397
	398	static X509 load_cert(char file)
	399	{
	400	BIO *in;
	401	X509 *cert;
	402	if(!(in = BIO_new_file(file, "r"))) return NULL;
	403	cert = PEM_read_bio_X509(in, NULL, NULL,NULL);
	404	BIO_free(in);
	405	return cert;
	406	}
	407
	408	static EVP_PKEY load_key(char file)
	409	{
	410	BIO *in;
	411	EVP_PKEY *key;
	412	if(!(in = BIO_new_file(file, "r"))) return NULL;
	413	key = PEM_read_bio_PrivateKey(in, NULL, NULL,NULL);
	414	BIO_free(in);
	415	return key;
	416	}
	417
	418	static STACK_OF(X509) load_certs(char file)
	419	{
	420	BIO *in;
	421	int i;
	422	STACK_OF(X509) *othercerts;
	423	STACK_OF(X509_INFO) *allcerts;
	424	X509_INFO *xi;
	425	if(!(in = BIO_new_file(file, "r"))) return NULL;
	426	othercerts = sk_X509_new(NULL);
	427	if(!othercerts) return NULL;
	428	allcerts = PEM_X509_INFO_read_bio(in, NULL, NULL, NULL);
	429	for(i = 0; i < sk_X509_INFO_num(allcerts); i++) {
	430	xi = sk_X509_INFO_value (allcerts, i);
	431	if (xi->x509) {
	432	sk_X509_push(othercerts, xi->x509);
	433	xi->x509 = NULL;
	434	}
	435	}
	436	sk_X509_INFO_pop_free(allcerts, X509_INFO_free);
	437	BIO_free(in);
	438	return othercerts;
	439	}
	440
	441	static X509_STORE setup_verify(char CAfile, char *CApath)
	442	{
	443	X509_STORE *store;
	444	X509_LOOKUP *lookup;
	445	if(!(store = X509_STORE_new())) goto end;
446	lookup=X509_STORE_add_lookup(store,X509_LOOKUP_file());
447	if (lookup == NULL) goto end;
448	if (CAfile) {
449	if(!X509_LOOKUP_load_file(lookup,CAfile,X509_FILETYPE_PEM)) {
450	BIO_printf(bio_err, "Error loading file %s\n", CAfile);
451	goto end;
452	}
453	} else X509_LOOKUP_load_file(lookup,NULL,X509_FILETYPE_DEFAULT);
454
455	lookup=X509_STORE_add_lookup(store,X509_LOOKUP_hash_dir());
456	if (lookup == NULL) goto end;
457	if (CApath) {
458	if(!X509_LOOKUP_add_dir(lookup,CApath,X509_FILETYPE_PEM)) {
459	BIO_printf(bio_err, "Error loading directory %s\n", CApath);
460	goto end;
461	}
462	} else X509_LOOKUP_add_dir(lookup,NULL,X509_FILETYPE_DEFAULT);
463
464	ERR_clear_error();
465	return store;
466	end:
467	X509_STORE_free(store);
468	return NULL;
469	}
55ec5861 DSH	470
	471	int save_certs(char signerfile, STACK_OF(X509) signers)
	472	{
	473	int i;
	474	BIO *tmp;
	475	if(!signerfile) return 1;
	476	tmp = BIO_new_file(signerfile, "w");
	477	if(!tmp) return 0;
	478	for(i = 0; i < sk_X509_num(signers); i++)
	479	PEM_write_bio_X509(tmp, sk_X509_value(signers, i));
	480	BIO_free(tmp);
	481	return 1;
	482	}
	483