/* apps/spkac.c */

 /* Written by Dr Stephen N Henson (shenson@bigfoot.com) for the OpenSSL

  * project 1999. Based on an original idea by Massimiliano Pala

  * (madwolf@openca.org).

  */

 /* ====================================================================

  * 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).

  *

  */

 #include <stdio.h>

 #include <stdlib.h>

 #include <string.h>

 #include <time.h>

 #include "apps.h"

 #include <openssl/bio.h>

 #include <openssl/conf.h>

 #include <openssl/err.h>

 #include <openssl/evp.h>

 #include <openssl/lhash.h>

 #include <openssl/x509.h>

 #include <openssl/pem.h>

 #undef PROG

 #define PROG	spkac_main

 /* -in arg	- input file - default stdin

  * -out arg	- output file - default stdout

  */

 int MAIN(int, char **);

 int MAIN(int argc, char **argv)

 	{

 	ENGINE *e = NULL;

 	int i,badops=0, ret = 1;

 	BIO *in = NULL,*out = NULL;

 	int verify=0,noout=0,pubkey=0;

 	char *infile = NULL,*outfile = NULL,*prog;

 	char *passargin = NULL, *passin = NULL;

 	const char *spkac = "SPKAC", *spksect = "default";

 	char *spkstr = NULL;

 	char *challenge = NULL, *keyfile = NULL;

 	CONF *conf = NULL;

 	NETSCAPE_SPKI *spki = NULL;

 	EVP_PKEY *pkey = NULL;

 #ifndef OPENSSL_NO_ENGINE

 	char *engine=NULL;

 #endif

 	apps_startup();

 	if (!bio_err)

 	bio_err = BIO_new_fp(stderr, BIO_NOCLOSE);

 	if (!load_config(bio_err, NULL))

 		goto end;

 	prog=argv[0];

 	argc--;

 	argv++;

 	while (argc >= 1)

 		{

 		if (strcmp(*argv,"-in") == 0)

 			{

 			if (--argc < 1) goto bad;

 			infile= *(++argv);

 			}

 		else if (strcmp(*argv,"-out") == 0)

 			{

 			if (--argc < 1) goto bad;

 			outfile= *(++argv);

 			}

 		else if (strcmp(*argv,"-passin") == 0)

 			{

 			if (--argc < 1) goto bad;

 			passargin= *(++argv);

 			}

 		else if (strcmp(*argv,"-key") == 0)

 			{

 			if (--argc < 1) goto bad;

 			keyfile= *(++argv);

 			}

 		else if (strcmp(*argv,"-challenge") == 0)

 			{

 			if (--argc < 1) goto bad;

 			challenge= *(++argv);

 			}

 		else if (strcmp(*argv,"-spkac") == 0)

 			{

 			if (--argc < 1) goto bad;

 			spkac= *(++argv);

 			}

 		else if (strcmp(*argv,"-spksect") == 0)

 			{

 			if (--argc < 1) goto bad;

 			spksect= *(++argv);

 			}

 #ifndef OPENSSL_NO_ENGINE

 		else if (strcmp(*argv,"-engine") == 0)

 			{

 			if (--argc < 1) goto bad;

 			engine= *(++argv);

 			}

 #endif

 		else if (strcmp(*argv,"-noout") == 0)

 			noout=1;

 		else if (strcmp(*argv,"-pubkey") == 0)

 			pubkey=1;

 		else if (strcmp(*argv,"-verify") == 0)

 			verify=1;

 		else badops = 1;

 		argc--;

 		argv++;

 		}

 	if (badops)

 		{

 bad:

 		BIO_printf(bio_err,"%s [options]\n",prog);

 		BIO_printf(bio_err,"where options are\n");

 		BIO_printf(bio_err," -in arg        input file\n");

 		BIO_printf(bio_err," -out arg       output file\n");

 		BIO_printf(bio_err," -key arg       create SPKAC using private key\n");

 		BIO_printf(bio_err," -passin arg    input file pass phrase source\n");

 		BIO_printf(bio_err," -challenge arg challenge string\n");

 		BIO_printf(bio_err," -spkac arg     alternative SPKAC name\n");

 		BIO_printf(bio_err," -noout         don't print SPKAC\n");

 		BIO_printf(bio_err," -pubkey        output public key\n");

 		BIO_printf(bio_err," -verify        verify SPKAC signature\n");

 #ifndef OPENSSL_NO_ENGINE

 		BIO_printf(bio_err," -engine e      use engine e, possibly a hardware device.\n");

 #endif

 		goto end;

 		}

 	ERR_load_crypto_strings();

 	if(!app_passwd(bio_err, passargin, NULL, &passin, NULL)) {

 		BIO_printf(bio_err, "Error getting password\n");

 		goto end;

 	}

 #ifndef OPENSSL_NO_ENGINE

         e = setup_engine(bio_err, engine, 0);

 #endif

 	if(keyfile) {

 		pkey = load_key(bio_err,

 				strcmp(keyfile, "-") ? keyfile : NULL,

 				FORMAT_PEM, 1, passin, e, "private key");

 		if(!pkey) {

 			goto end;

 		}

 		spki = NETSCAPE_SPKI_new();

 		if(challenge) ASN1_STRING_set(spki->spkac->challenge,

 						 challenge, (int)strlen(challenge));

 		NETSCAPE_SPKI_set_pubkey(spki, pkey);

 		NETSCAPE_SPKI_sign(spki, pkey, EVP_md5());

 		spkstr = NETSCAPE_SPKI_b64_encode(spki);

 		if (outfile) out = BIO_new_file(outfile, "w");

 		else {

 			out = BIO_new_fp(stdout, BIO_NOCLOSE);

 #ifdef OPENSSL_SYS_VMS

 			{

 			    BIO *tmpbio = BIO_new(BIO_f_linebuffer());

 			    out = BIO_push(tmpbio, out);

 			}

 #endif

 		}

 		if(!out) {

 			BIO_printf(bio_err, "Error opening output file\n");

 			ERR_print_errors(bio_err);

 			goto end;

 		}

 		BIO_printf(out, "SPKAC=%s\n", spkstr);

 		OPENSSL_free(spkstr);

 		ret = 0;

 		goto end;

 	}

 	if (infile) in = BIO_new_file(infile, "r");

 	else in = BIO_new_fp(stdin, BIO_NOCLOSE);

 	if(!in) {

 		BIO_printf(bio_err, "Error opening input file\n");

 		ERR_print_errors(bio_err);

 		goto end;

 	}

 	conf = NCONF_new(NULL);

 	i = NCONF_load_bio(conf, in, NULL);

 	if(!i) {

 		BIO_printf(bio_err, "Error parsing config file\n");

 		ERR_print_errors(bio_err);

 		goto end;

 	}

 	spkstr = NCONF_get_string(conf, spksect, spkac);

 	if(!spkstr) {

 		BIO_printf(bio_err, "Can't find SPKAC called \"%s\"\n", spkac);

 		ERR_print_errors(bio_err);

 		goto end;

 	}

 	spki = NETSCAPE_SPKI_b64_decode(spkstr, -1);

 	if(!spki) {

 		BIO_printf(bio_err, "Error loading SPKAC\n");

 		ERR_print_errors(bio_err);

 		goto end;

 	}

 	if (outfile) out = BIO_new_file(outfile, "w");

 	else {

 		out = BIO_new_fp(stdout, BIO_NOCLOSE);

 #ifdef OPENSSL_SYS_VMS

 		{

 		    BIO *tmpbio = BIO_new(BIO_f_linebuffer());

 		    out = BIO_push(tmpbio, out);

 		}

 #endif

 	}

 	if(!out) {

 		BIO_printf(bio_err, "Error opening output file\n");

 		ERR_print_errors(bio_err);

 		goto end;

 	}

 	if(!noout) NETSCAPE_SPKI_print(out, spki);

 	pkey = NETSCAPE_SPKI_get_pubkey(spki);

 	if(verify) {

 		i = NETSCAPE_SPKI_verify(spki, pkey);

 		if(i) BIO_printf(bio_err, "Signature OK\n");

 		else {

 			BIO_printf(bio_err, "Signature Failure\n");

 			ERR_print_errors(bio_err);

 			goto end;

 		}

 	}

 	if(pubkey) PEM_write_bio_PUBKEY(out, pkey);

 	ret = 0;

 end:

 	NCONF_free(conf);

 	NETSCAPE_SPKI_free(spki);

 	BIO_free(in);

 	BIO_free_all(out);

 	EVP_PKEY_free(pkey);

 	if(passin) OPENSSL_free(passin);

 	apps_shutdown();

 	OPENSSL_EXIT(ret);

 	}