[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 "apps.h"
#include <openssl/crypto.h>
#include <openssl/pem.h>
#include <openssl/err.h>
#include <openssl/engine.h>

#undef PROG
#define PROG smime_main
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, char **);

int MAIN(int argc, char **argv)
{
	ENGINE *e = NULL;
	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, *contfile=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;
	char *passargin = NULL, *passin = NULL;
	char *inrand = NULL;
	int need_rand = 0;
	int informat = FORMAT_SMIME, outformat = FORMAT_SMIME;
	char *engine=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;
#ifndef NO_DES
		else if (!strcmp (*args, "-des3")) 
				cipher = EVP_des_ede3_cbc();
		else if (!strcmp (*args, "-des")) 
				cipher = EVP_des_cbc();
#endif
#ifndef 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
		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, "-nosmimecap"))
				flags |= PKCS7_NOSMIMECAP;
		else if (!strcmp (*args, "-binary"))
				flags |= PKCS7_BINARY;
		else if (!strcmp (*args, "-nosigs"))
				flags |= PKCS7_NOSIGS;
		else if (!strcmp(*args,"-rand")) {
			if (args[1]) {
				args++;
				inrand = *args;
			} else badarg = 1;
			need_rand = 1;
		} else if (!strcmp(*args,"-engine")) {
			if (args[1]) {
				args++;
				engine = *args;
			} else badarg = 1;
		} else if (!strcmp(*args,"-passin")) {
			if (args[1]) {
				args++;
				passargin = *args;
			} else badarg = 1;
		} 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, "-inform")) {
			if (args[1]) {
				args++;
				informat = str2fmt(*args);
			} else badarg = 1;
		} else if (!strcmp (*args, "-outform")) {
			if (args[1]) {
				args++;
				outformat = str2fmt(*args);
			} else badarg = 1;
		} else if (!strcmp (*args, "-out")) {
			if (args[1]) {
				args++;
				outfile = *args;
			} else badarg = 1;
		} else if (!strcmp (*args, "-content")) {
			if (args[1]) {
				args++;
				contfile = *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;
		}
		need_rand = 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;
		}
		need_rand = 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");
#ifndef NO_DES
		BIO_printf (bio_err, "-des3          encrypt with triple DES\n");
		BIO_printf (bio_err, "-des           encrypt with DES\n");
#endif
#ifndef 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
		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, "-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, "-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, "-engine e      use engine e, possibly a hardware device.\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;
	}

	if (engine != NULL)
		{
		if((e = ENGINE_by_id(engine)) == NULL)
			{
			BIO_printf(bio_err,"invalid engine \"%s\"\n",
				engine);
			goto end;
			}
		if(!ENGINE_set_default(e, ENGINE_METHOD_ALL))
			{
			BIO_printf(bio_err,"can't use that engine\n");
			goto end;
			}
		BIO_printf(bio_err,"engine \"%s\" set.\n", engine);
		/* Free our "structural" reference. */
		ENGINE_free(e);
		}

	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_SIGN) flags &= ~PKCS7_DETACHED;

	if(operation & SMIME_OP) {
		if(flags & PKCS7_BINARY) inmode = "rb";
		if(outformat == FORMAT_ASN1) outmode = "wb";
	} else {
		if(flags & PKCS7_BINARY) outmode = "wb";
		if(informat == FORMAT_ASN1) inmode = "rb";
	}

	if(operation == SMIME_ENCRYPT) {
		if (!cipher) {
#ifndef NO_RC2			
			cipher = EVP_rc2_40_cbc();
#else
			BIO_printf(bio_err, "No cipher selected\n");
			goto end;
#endif
		}
		encerts = sk_X509_new_null();
		while (*args) {
			if(!(cert = load_cert(bio_err,*args,FORMAT_PEM))) {
				BIO_printf(bio_err, "Can't read recipient certificate file %s\n", *args);
				goto end;
			}
			sk_X509_push(encerts, cert);
			cert = NULL;
			args++;
		}
	}

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

	if(certfile) {
		if(!(other = load_certs(bio_err,certfile,FORMAT_PEM))) {
			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(bio_err,recipfile,FORMAT_PEM))) {
			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(bio_err,keyfile, FORMAT_PEM, passin, NULL))) {
			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);
#ifdef VMS
		{
		    BIO *tmpbio = BIO_new(BIO_f_linebuffer());
		    out = BIO_push(tmpbio, out);
		}
#endif
	}

	if(operation == SMIME_VERIFY) {
		if(!(store = setup_verify(bio_err, 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(informat == FORMAT_SMIME) 
			p7 = SMIME_read_PKCS7(in, &indata);
		else if(informat == FORMAT_PEM) 
			p7 = PEM_read_bio_PKCS7(in, NULL, NULL, NULL);
		else if(informat == FORMAT_ASN1) 
			p7 = d2i_PKCS7_bio(in, NULL);
		else {
			BIO_printf(bio_err, "Bad input format for PKCS#7 file\n");
			goto end;
		}

		if(!p7) {
			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;
			}
		}
	}

	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_get0_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);
		if(outformat == FORMAT_SMIME) 
			SMIME_write_PKCS7(out, p7, in, flags);
		else if(outformat == FORMAT_PEM) 
			PEM_write_bio_PKCS7(out,p7);
		else if(outformat == FORMAT_ASN1) 
			i2d_PKCS7_bio(out,p7);
		else {
			BIO_printf(bio_err, "Bad output format for PKCS#7 file\n");
			goto end;
		}
	}
	ret = 0;
end:
	if (need_rand)
		app_RAND_write_file(NULL, bio_err);
	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_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;
}
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>
36217a94	63	#include "apps.h"
11afb40c	64	#include <openssl/crypto.h>
5a9a4b29 DSH	65	#include <openssl/pem.h>
5a9a4b29 DSH	66	#include <openssl/err.h>
5270e702	67	#include <openssl/engine.h>
5a9a4b29 DSH	68
	69	#undef PROG
	70	#define PROG smime_main
55ec5861	71	static int save_certs(char signerfile, STACK_OF(X509) signers);
5a9a4b29 DSH	72
	73	#define SMIME_OP 0x10
	74	#define SMIME_ENCRYPT (1 \| SMIME_OP)
	75	#define SMIME_DECRYPT 2
	76	#define SMIME_SIGN (3 \| SMIME_OP)
	77	#define SMIME_VERIFY 4
	78	#define SMIME_PK7OUT 5
	79
667ac4ec RE	80	int MAIN(int, char **);
667ac4ec RE	81
5a9a4b29 DSH	82	int MAIN(int argc, char **argv)
5a9a4b29 DSH	83	{
5270e702	84	ENGINE *e = NULL;
5a9a4b29 DSH	85	int operation = 0;
	86	int ret = 0;
	87	char **args;
	88	char inmode = "r", outmode = "w";
	89	char infile = NULL, outfile = NULL;
	90	char signerfile = NULL, recipfile = NULL;
094fe66d	91	char certfile = NULL, keyfile = NULL, *contfile=NULL;
5a9a4b29 DSH	92	EVP_CIPHER *cipher = NULL;
	93	PKCS7 *p7 = NULL;
	94	X509_STORE *store = NULL;
	95	X509 cert = NULL, recip = NULL, *signer = NULL;
	96	EVP_PKEY *key = NULL;
	97	STACK_OF(X509) encerts = NULL, other = NULL;
	98	BIO in = NULL, out = NULL, *indata = NULL;
	99	int badarg = 0;
	100	int flags = PKCS7_DETACHED;
	101	char to = NULL, from = NULL, *subject = NULL;
a3fe382e DSH	102	char CAfile = NULL, CApath = NULL;
a3fe382e DSH	103	char passargin = NULL, passin = NULL;
f365611c	104	char *inrand = NULL;
d13e4eb0	105	int need_rand = 0;
094fe66d	106	int informat = FORMAT_SMIME, outformat = FORMAT_SMIME;
5270e702	107	char *engine=NULL;
5a9a4b29	108
5270e702	109	args = argv + 1;
5a9a4b29 DSH	110	ret = 1;
	111
	112	while (!badarg && args && args[0] == '-') {
	113	if (!strcmp (*args, "-encrypt")) operation = SMIME_ENCRYPT;
	114	else if (!strcmp (*args, "-decrypt")) operation = SMIME_DECRYPT;
	115	else if (!strcmp (*args, "-sign")) operation = SMIME_SIGN;
	116	else if (!strcmp (*args, "-verify")) operation = SMIME_VERIFY;
	117	else if (!strcmp (*args, "-pk7out")) operation = SMIME_PK7OUT;
63da21c0	118	#ifndef NO_DES
5a9a4b29 DSH	119	else if (!strcmp (*args, "-des3"))
	120	cipher = EVP_des_ede3_cbc();
	121	else if (!strcmp (*args, "-des"))
	122	cipher = EVP_des_cbc();
63da21c0 BM	123	#endif
63da21c0 BM	124	#ifndef NO_RC2
5a9a4b29 DSH	125	else if (!strcmp (*args, "-rc2-40"))
	126	cipher = EVP_rc2_40_cbc();
	127	else if (!strcmp (*args, "-rc2-128"))
	128	cipher = EVP_rc2_cbc();
	129	else if (!strcmp (*args, "-rc2-64"))
	130	cipher = EVP_rc2_64_cbc();
63da21c0	131	#endif
5a9a4b29 DSH	132	else if (!strcmp (*args, "-text"))
	133	flags \|= PKCS7_TEXT;
	134	else if (!strcmp (*args, "-nointern"))
	135	flags \|= PKCS7_NOINTERN;
	136	else if (!strcmp (*args, "-noverify"))
	137	flags \|= PKCS7_NOVERIFY;
	138	else if (!strcmp (*args, "-nochain"))
	139	flags \|= PKCS7_NOCHAIN;
	140	else if (!strcmp (*args, "-nocerts"))
	141	flags \|= PKCS7_NOCERTS;
	142	else if (!strcmp (*args, "-noattr"))
	143	flags \|= PKCS7_NOATTR;
	144	else if (!strcmp (*args, "-nodetach"))
	145	flags &= ~PKCS7_DETACHED;
34216c04 DSH	146	else if (!strcmp (*args, "-nosmimecap"))
34216c04 DSH	147	flags \|= PKCS7_NOSMIMECAP;
5a9a4b29 DSH	148	else if (!strcmp (*args, "-binary"))
5a9a4b29 DSH	149	flags \|= PKCS7_BINARY;
e3775a33 DSH	150	else if (!strcmp (*args, "-nosigs"))
e3775a33 DSH	151	flags \|= PKCS7_NOSIGS;
d13e4eb0 DSH	152	else if (!strcmp(*args,"-rand")) {
	153	if (args[1]) {
	154	args++;
	155	inrand = *args;
	156	} else badarg = 1;
	157	need_rand = 1;
5270e702 RL	158	} else if (!strcmp(*args,"-engine")) {
	159	if (args[1]) {
	160	args++;
	161	engine = *args;
	162	} else badarg = 1;
d13e4eb0 DSH	163	} else if (!strcmp(*args,"-passin")) {
	164	if (args[1]) {
	165	args++;
a3fe382e	166	passargin = *args;
d13e4eb0	167	} else badarg = 1;
36217a94	168	} else if (!strcmp (*args, "-to")) {
5a9a4b29 DSH	169	if (args[1]) {
	170	args++;
	171	to = *args;
	172	} else badarg = 1;
	173	} else if (!strcmp (*args, "-from")) {
	174	if (args[1]) {
	175	args++;
	176	from = *args;
	177	} else badarg = 1;
	178	} else if (!strcmp (*args, "-subject")) {
	179	if (args[1]) {
	180	args++;
	181	subject = *args;
	182	} else badarg = 1;
	183	} else if (!strcmp (*args, "-signer")) {
	184	if (args[1]) {
	185	args++;
	186	signerfile = *args;
	187	} else badarg = 1;
	188	} else if (!strcmp (*args, "-recip")) {
	189	if (args[1]) {
	190	args++;
	191	recipfile = *args;
	192	} else badarg = 1;
	193	} else if (!strcmp (*args, "-inkey")) {
	194	if (args[1]) {
	195	args++;
	196	keyfile = *args;
	197	} else badarg = 1;
	198	} else if (!strcmp (*args, "-certfile")) {
	199	if (args[1]) {
	200	args++;
	201	certfile = *args;
	202	} else badarg = 1;
	203	} else if (!strcmp (*args, "-CAfile")) {
	204	if (args[1]) {
	205	args++;
	206	CAfile = *args;
	207	} else badarg = 1;
	208	} else if (!strcmp (*args, "-CApath")) {
	209	if (args[1]) {
	210	args++;
	211	CApath = *args;
	212	} else badarg = 1;
	213	} else if (!strcmp (*args, "-in")) {
	214	if (args[1]) {
	215	args++;
	216	infile = *args;
	217	} else badarg = 1;
094fe66d DSH	218	} else if (!strcmp (*args, "-inform")) {
	219	if (args[1]) {
	220	args++;
	221	informat = str2fmt(*args);
	222	} else badarg = 1;
	223	} else if (!strcmp (*args, "-outform")) {
	224	if (args[1]) {
	225	args++;
	226	outformat = str2fmt(*args);
	227	} else badarg = 1;
5a9a4b29 DSH	228	} else if (!strcmp (*args, "-out")) {
	229	if (args[1]) {
	230	args++;
	231	outfile = *args;
	232	} else badarg = 1;
094fe66d DSH	233	} else if (!strcmp (*args, "-content")) {
	234	if (args[1]) {
	235	args++;
	236	contfile = *args;
	237	} else badarg = 1;
5a9a4b29 DSH	238	} else badarg = 1;
	239	args++;
	240	}
	241
	242	if(operation == SMIME_SIGN) {
	243	if(!signerfile) {
	244	BIO_printf(bio_err, "No signer certificate specified\n");
	245	badarg = 1;
	246	}
d13e4eb0	247	need_rand = 1;
5a9a4b29 DSH	248	} else if(operation == SMIME_DECRYPT) {
	249	if(!recipfile) {
	250	BIO_printf(bio_err, "No recipient certificate and key specified\n");
	251	badarg = 1;
	252	}
	253	} else if(operation == SMIME_ENCRYPT) {
	254	if(!*args) {
	255	BIO_printf(bio_err, "No recipient(s) certificate(s) specified\n");
	256	badarg = 1;
	257	}
d13e4eb0	258	need_rand = 1;
5a9a4b29 DSH	259	} else if(!operation) badarg = 1;
	260
	261	if (badarg) {
	262	BIO_printf (bio_err, "Usage smime [options] cert.pem ...\n");
	263	BIO_printf (bio_err, "where options are\n");
	264	BIO_printf (bio_err, "-encrypt encrypt message\n");
	265	BIO_printf (bio_err, "-decrypt decrypt encrypted message\n");
	266	BIO_printf (bio_err, "-sign sign message\n");
	267	BIO_printf (bio_err, "-verify verify signed message\n");
	268	BIO_printf (bio_err, "-pk7out output PKCS#7 structure\n");
63da21c0	269	#ifndef NO_DES
5a9a4b29	270	BIO_printf (bio_err, "-des3 encrypt with triple DES\n");
63da21c0 BM	271	BIO_printf (bio_err, "-des encrypt with DES\n");
	272	#endif
	273	#ifndef NO_RC2
	274	BIO_printf (bio_err, "-rc2-40 encrypt with RC2-40 (default)\n");
5a9a4b29 DSH	275	BIO_printf (bio_err, "-rc2-64 encrypt with RC2-64\n");
5a9a4b29 DSH	276	BIO_printf (bio_err, "-rc2-128 encrypt with RC2-128\n");
63da21c0	277	#endif
e3775a33 DSH	278	BIO_printf (bio_err, "-nointern don't search certificates in message for signer\n");
	279	BIO_printf (bio_err, "-nosigs don't verify message signature\n");
	280	BIO_printf (bio_err, "-noverify don't verify signers certificate\n");
	281	BIO_printf (bio_err, "-nocerts don't include signers certificate when signing\n");
	282	BIO_printf (bio_err, "-nodetach use opaque signing\n");
	283	BIO_printf (bio_err, "-noattr don't include any signed attributes\n");
	284	BIO_printf (bio_err, "-binary don't translate message to text\n");
5a9a4b29 DSH	285	BIO_printf (bio_err, "-certfile file other certificates file\n");
5a9a4b29 DSH	286	BIO_printf (bio_err, "-signer file signer certificate file\n");
2c736d07	287	BIO_printf (bio_err, "-recip file recipient certificate file for decryption\n");
5a9a4b29	288	BIO_printf (bio_err, "-in file input file\n");
fd13f0ee	289	BIO_printf (bio_err, "-inform arg input format SMIME (default), PEM or DER\n");
5a9a4b29 DSH	290	BIO_printf (bio_err, "-inkey file input private key (if not signer or recipient)\n");
5a9a4b29 DSH	291	BIO_printf (bio_err, "-out file output file\n");
fd13f0ee DSH	292	BIO_printf (bio_err, "-outform arg output format SMIME (default), PEM or DER\n");
fd13f0ee DSH	293	BIO_printf (bio_err, "-content file supply or override content for detached signature\n");
5a9a4b29 DSH	294	BIO_printf (bio_err, "-to addr to address\n");
	295	BIO_printf (bio_err, "-from ad from address\n");
	296	BIO_printf (bio_err, "-subject s subject\n");
	297	BIO_printf (bio_err, "-text include or delete text MIME headers\n");
e3775a33 DSH	298	BIO_printf (bio_err, "-CApath dir trusted certificates directory\n");
e3775a33 DSH	299	BIO_printf (bio_err, "-CAfile file trusted certificates file\n");
5270e702	300	BIO_printf (bio_err, "-engine e use engine e, possibly a hardware device.\n");
afbd0746	301	BIO_printf(bio_err, "-rand file%cfile%c...\n", LIST_SEPARATOR_CHAR, LIST_SEPARATOR_CHAR);
d13e4eb0 DSH	302	BIO_printf(bio_err, " load the file (or the files in the directory) into\n");
d13e4eb0 DSH	303	BIO_printf(bio_err, " the random number generator\n");
2c736d07	304	BIO_printf (bio_err, "cert.pem recipient certificate(s) for encryption\n");
5a9a4b29 DSH	305	goto end;
	306	}
	307
5270e702 RL	308	if (engine != NULL)
	309	{
	310	if((e = ENGINE_by_id(engine)) == NULL)
	311	{
	312	BIO_printf(bio_err,"invalid engine \"%s\"\n",
	313	engine);
	314	goto end;
	315	}
	316	if(!ENGINE_set_default(e, ENGINE_METHOD_ALL))
	317	{
	318	BIO_printf(bio_err,"can't use that engine\n");
	319	goto end;
	320	}
	321	BIO_printf(bio_err,"engine \"%s\" set.\n", engine);
	322	/* Free our "structural" reference. */
	323	ENGINE_free(e);
	324	}
	325
a3fe382e DSH	326	if(!app_passwd(bio_err, passargin, NULL, &passin, NULL)) {
	327	BIO_printf(bio_err, "Error getting password\n");
	328	goto end;
	329	}
	330
d13e4eb0	331	if (need_rand) {
f365611c	332	app_RAND_load_file(NULL, bio_err, (inrand != NULL));
d13e4eb0 DSH	333	if (inrand != NULL)
	334	BIO_printf(bio_err,"%ld semi-random bytes loaded\n",
	335	app_RAND_load_files(inrand));
	336	}
	337
5a9a4b29 DSH	338	ret = 2;
	339
	340	if(operation != SMIME_SIGN) flags &= ~PKCS7_DETACHED;
	341
094fe66d DSH	342	if(operation & SMIME_OP) {
	343	if(flags & PKCS7_BINARY) inmode = "rb";
	344	if(outformat == FORMAT_ASN1) outmode = "wb";
	345	} else {
	346	if(flags & PKCS7_BINARY) outmode = "wb";
	347	if(informat == FORMAT_ASN1) inmode = "rb";
5a9a4b29 DSH	348	}
	349
	350	if(operation == SMIME_ENCRYPT) {
63da21c0 BM	351	if (!cipher) {
	352	#ifndef NO_RC2
	353	cipher = EVP_rc2_40_cbc();
	354	#else
	355	BIO_printf(bio_err, "No cipher selected\n");
	356	goto end;
	357	#endif
	358	}
55f30198	359	encerts = sk_X509_new_null();
5a9a4b29	360	while (*args) {
431b0cce	361	if(!(cert = load_cert(bio_err,*args,FORMAT_PEM))) {
657e60fa	362	BIO_printf(bio_err, "Can't read recipient certificate file %s\n", *args);
5a9a4b29 DSH	363	goto end;
5a9a4b29 DSH	364	}
55f30198	365	sk_X509_push(encerts, cert);
5a9a4b29 DSH	366	cert = NULL;
	367	args++;
	368	}
	369	}
	370
55ec5861	371	if(signerfile && (operation == SMIME_SIGN)) {
431b0cce	372	if(!(signer = load_cert(bio_err,signerfile,FORMAT_PEM))) {
5a9a4b29 DSH	373	BIO_printf(bio_err, "Can't read signer certificate file %s\n", signerfile);
	374	goto end;
	375	}
	376	}
	377
	378	if(certfile) {
431b0cce	379	if(!(other = load_certs(bio_err,certfile,FORMAT_PEM))) {
5a9a4b29 DSH	380	BIO_printf(bio_err, "Can't read certificate file %s\n", certfile);
	381	ERR_print_errors(bio_err);
	382	goto end;
	383	}
	384	}
	385
55ec5861	386	if(recipfile && (operation == SMIME_DECRYPT)) {
431b0cce	387	if(!(recip = load_cert(bio_err,recipfile,FORMAT_PEM))) {
5a9a4b29 DSH	388	BIO_printf(bio_err, "Can't read recipient certificate file %s\n", recipfile);
	389	ERR_print_errors(bio_err);
	390	goto end;
	391	}
	392	}
	393
	394	if(operation == SMIME_DECRYPT) {
	395	if(!keyfile) keyfile = recipfile;
	396	} else if(operation == SMIME_SIGN) {
	397	if(!keyfile) keyfile = signerfile;
	398	} else keyfile = NULL;
	399
	400	if(keyfile) {
32d862ed	401	if(!(key = load_key(bio_err,keyfile, FORMAT_PEM, passin, NULL))) {
5a9a4b29 DSH	402	BIO_printf(bio_err, "Can't read recipient certificate file %s\n", keyfile);
	403	ERR_print_errors(bio_err);
	404	goto end;
	405	}
	406	}
	407
	408	if (infile) {
	409	if (!(in = BIO_new_file(infile, inmode))) {
	410	BIO_printf (bio_err,
	411	"Can't open input file %s\n", infile);
	412	goto end;
	413	}
	414	} else in = BIO_new_fp(stdin, BIO_NOCLOSE);
	415
	416	if (outfile) {
	417	if (!(out = BIO_new_file(outfile, outmode))) {
	418	BIO_printf (bio_err,
	419	"Can't open output file %s\n", outfile);
	420	goto end;
	421	}
645749ef RL	422	} else {
	423	out = BIO_new_fp(stdout, BIO_NOCLOSE);
	424	#ifdef VMS
	425	{
	426	BIO *tmpbio = BIO_new(BIO_f_linebuffer());
	427	out = BIO_push(tmpbio, out);
	428	}
	429	#endif
	430	}
11afb40c BM	431
11afb40c BM	432	if(operation == SMIME_VERIFY) {
81f169e9	433	if(!(store = setup_verify(bio_err, CAfile, CApath))) goto end;
11afb40c	434	}
5a9a4b29 DSH	435
5a9a4b29 DSH	436	ret = 3;
e3775a33	437
5a9a4b29 DSH	438	if(operation == SMIME_ENCRYPT) {
	439	p7 = PKCS7_encrypt(encerts, in, cipher, flags);
	440	} else if(operation == SMIME_SIGN) {
	441	p7 = PKCS7_sign(signer, key, other, in, flags);
	442	BIO_reset(in);
	443	} else {
094fe66d DSH	444	if(informat == FORMAT_SMIME)
	445	p7 = SMIME_read_PKCS7(in, &indata);
	446	else if(informat == FORMAT_PEM)
	447	p7 = PEM_read_bio_PKCS7(in, NULL, NULL, NULL);
	448	else if(informat == FORMAT_ASN1)
	449	p7 = d2i_PKCS7_bio(in, NULL);
	450	else {
	451	BIO_printf(bio_err, "Bad input format for PKCS#7 file\n");
	452	goto end;
	453	}
	454
	455	if(!p7) {
5a9a4b29	456	BIO_printf(bio_err, "Error reading S/MIME message\n");
5a9a4b29 DSH	457	goto end;
5a9a4b29 DSH	458	}
094fe66d DSH	459	if(contfile) {
	460	BIO_free(indata);
	461	if(!(indata = BIO_new_file(contfile, "rb"))) {
	462	BIO_printf(bio_err, "Can't read content file %s\n", contfile);
	463	goto end;
	464	}
	465	}
5a9a4b29	466	}
e3775a33	467
5a9a4b29 DSH	468	if(!p7) {
	469	BIO_printf(bio_err, "Error creating PKCS#7 structure\n");
	470	goto end;
	471	}
	472
e3775a33	473	ret = 4;
5a9a4b29	474	if(operation == SMIME_DECRYPT) {
e3775a33	475	if(!PKCS7_decrypt(p7, key, recip, out, flags)) {
5a9a4b29	476	BIO_printf(bio_err, "Error decrypting PKCS#7 structure\n");
e3775a33 DSH	477	goto end;
e3775a33 DSH	478	}
5a9a4b29	479	} else if(operation == SMIME_VERIFY) {
55ec5861	480	STACK_OF(X509) *signers;
5a9a4b29 DSH	481	if(PKCS7_verify(p7, other, store, indata, out, flags)) {
5a9a4b29 DSH	482	BIO_printf(bio_err, "Verification Successful\n");
5a9a4b29 DSH	483	} else {
5a9a4b29 DSH	484	BIO_printf(bio_err, "Verification Failure\n");
e3775a33	485	goto end;
5a9a4b29	486	}
c7cb16a8	487	signers = PKCS7_get0_signers(p7, other, flags);
55ec5861 DSH	488	if(!save_certs(signerfile, signers)) {
	489	BIO_printf(bio_err, "Error writing signers to %s\n",
	490	signerfile);
e3775a33 DSH	491	ret = 5;
e3775a33 DSH	492	goto end;
55ec5861 DSH	493	}
55ec5861 DSH	494	sk_X509_free(signers);
5a9a4b29 DSH	495	} else if(operation == SMIME_PK7OUT) {
	496	PEM_write_bio_PKCS7(out, p7);
	497	} else {
	498	if(to) BIO_printf(out, "To: %s\n", to);
	499	if(from) BIO_printf(out, "From: %s\n", from);
	500	if(subject) BIO_printf(out, "Subject: %s\n", subject);
094fe66d DSH	501	if(outformat == FORMAT_SMIME)
	502	SMIME_write_PKCS7(out, p7, in, flags);
	503	else if(outformat == FORMAT_PEM)
	504	PEM_write_bio_PKCS7(out,p7);
	505	else if(outformat == FORMAT_ASN1)
	506	i2d_PKCS7_bio(out,p7);
	507	else {
	508	BIO_printf(bio_err, "Bad output format for PKCS#7 file\n");
	509	goto end;
	510	}
5a9a4b29	511	}
e3775a33	512	ret = 0;
5a9a4b29	513	end:
d13e4eb0 DSH	514	if (need_rand)
d13e4eb0 DSH	515	app_RAND_write_file(NULL, bio_err);
5a9a4b29 DSH	516	if(ret) ERR_print_errors(bio_err);
	517	sk_X509_pop_free(encerts, X509_free);
	518	sk_X509_pop_free(other, X509_free);
	519	X509_STORE_free(store);
	520	X509_free(cert);
	521	X509_free(recip);
	522	X509_free(signer);
	523	EVP_PKEY_free(key);
	524	PKCS7_free(p7);
	525	BIO_free(in);
	526	BIO_free(indata);
645749ef	527	BIO_free_all(out);
26a3a48d	528	if(passin) OPENSSL_free(passin);
5a9a4b29 DSH	529	return (ret);
	530	}
	531
a91451ef	532	static int save_certs(char signerfile, STACK_OF(X509) signers)
55ec5861 DSH	533	{
	534	int i;
	535	BIO *tmp;
	536	if(!signerfile) return 1;
	537	tmp = BIO_new_file(signerfile, "w");
	538	if(!tmp) return 0;
	539	for(i = 0; i < sk_X509_num(signers); i++)
	540	PEM_write_bio_X509(tmp, sk_X509_value(signers, i));
	541	BIO_free(tmp);
	542	return 1;
	543	}
	544