312 lines
7.9 KiB
C
312 lines
7.9 KiB
C
/* $OpenBSD: spkac.c,v 1.13 2023/03/06 14:32:06 tb Exp $ */
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/* Written by Dr Stephen N Henson (steve@openssl.org) for the OpenSSL
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* project 1999. Based on an original idea by Massimiliano Pala
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* (madwolf@openca.org).
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*/
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/* ====================================================================
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* Copyright (c) 1999 The OpenSSL Project. All rights reserved.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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*
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* 1. Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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*
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* 2. Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in
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* the documentation and/or other materials provided with the
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* distribution.
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*
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* 3. All advertising materials mentioning features or use of this
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* software must display the following acknowledgment:
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* "This product includes software developed by the OpenSSL Project
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* for use in the OpenSSL Toolkit. (http://www.OpenSSL.org/)"
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*
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* 4. The names "OpenSSL Toolkit" and "OpenSSL Project" must not be used to
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* endorse or promote products derived from this software without
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* prior written permission. For written permission, please contact
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* licensing@OpenSSL.org.
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*
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* 5. Products derived from this software may not be called "OpenSSL"
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* nor may "OpenSSL" appear in their names without prior written
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* permission of the OpenSSL Project.
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*
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* 6. Redistributions of any form whatsoever must retain the following
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* acknowledgment:
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* "This product includes software developed by the OpenSSL Project
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* for use in the OpenSSL Toolkit (http://www.OpenSSL.org/)"
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*
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* THIS SOFTWARE IS PROVIDED BY THE OpenSSL PROJECT ``AS IS'' AND ANY
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* EXPRESSED OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
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* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
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* PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE OpenSSL PROJECT OR
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* ITS CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
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* SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
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* NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
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* LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
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* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT,
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* STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
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* ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED
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* OF THE POSSIBILITY OF SUCH DAMAGE.
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* ====================================================================
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*
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* This product includes cryptographic software written by Eric Young
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* (eay@cryptsoft.com). This product includes software written by Tim
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* Hudson (tjh@cryptsoft.com).
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*
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*/
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#include <stdio.h>
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#include <stdlib.h>
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#include <string.h>
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#include <time.h>
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#include "apps.h"
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#include "progs.h"
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#include <openssl/bio.h>
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#include <openssl/conf.h>
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#include <openssl/err.h>
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#include <openssl/evp.h>
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#include <openssl/lhash.h>
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#include <openssl/pem.h>
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#include <openssl/x509.h>
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static struct {
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char *challenge;
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char *infile;
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char *keyfile;
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int noout;
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char *outfile;
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char *passargin;
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int pubkey;
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char *spkac;
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char *spksect;
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int verify;
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} cfg;
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static const struct option spkac_options[] = {
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{
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.name = "challenge",
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.argname = "string",
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.desc = "Specify challenge string if SPKAC is generated",
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.type = OPTION_ARG,
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.opt.arg = &cfg.challenge,
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},
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{
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.name = "in",
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.argname = "file",
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.desc = "Input file (default stdin)",
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.type = OPTION_ARG,
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.opt.arg = &cfg.infile,
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},
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{
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.name = "key",
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.argname = "file",
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.desc = "Create SPKAC using private key file",
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.type = OPTION_ARG,
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.opt.arg = &cfg.keyfile,
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},
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{
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.name = "noout",
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.desc = "Do not print text version of SPKAC",
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.type = OPTION_FLAG,
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.opt.flag = &cfg.noout,
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},
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{
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.name = "out",
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.argname = "file",
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.desc = "Output file (default stdout)",
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.type = OPTION_ARG,
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.opt.arg = &cfg.outfile,
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},
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{
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.name = "passin",
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.argname = "src",
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.desc = "Input file passphrase source",
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.type = OPTION_ARG,
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.opt.arg = &cfg.passargin,
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},
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{
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.name = "pubkey",
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.desc = "Output public key of an SPKAC (not used if creating)",
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.type = OPTION_FLAG,
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.opt.flag = &cfg.pubkey,
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},
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{
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.name = "spkac",
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.argname = "name",
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.desc = "SPKAC name (default \"SPKAC\")",
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.type = OPTION_ARG,
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.opt.arg = &cfg.spkac,
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},
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{
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.name = "spksect",
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.argname = "name",
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.desc = "Name of the section containing SPKAC (default"
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" \"default\")",
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.type = OPTION_ARG,
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.opt.arg = &cfg.spksect,
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},
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{
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.name = "verify",
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.desc = "Verify digital signature on supplied SPKAC",
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.type = OPTION_FLAG,
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.opt.flag = &cfg.verify,
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},
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{ NULL }
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};
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static void
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spkac_usage(void)
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{
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fprintf(stderr,
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"usage: spkac [-challenge string] [-in file] "
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"[-key file] [-noout]\n"
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" [-out file] [-passin src] [-pubkey] [-spkac name] "
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"[-spksect section]\n"
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" [-verify]\n\n");
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options_usage(spkac_options);
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}
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int
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spkac_main(int argc, char **argv)
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{
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int i, ret = 1;
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BIO *in = NULL, *out = NULL;
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char *passin = NULL;
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char *spkstr = NULL;
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CONF *conf = NULL;
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NETSCAPE_SPKI *spki = NULL;
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EVP_PKEY *pkey = NULL;
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if (pledge("stdio cpath wpath rpath tty", NULL) == -1) {
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perror("pledge");
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exit(1);
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}
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memset(&cfg, 0, sizeof(cfg));
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cfg.spkac = "SPKAC";
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cfg.spksect = "default";
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if (options_parse(argc, argv, spkac_options, NULL, NULL) != 0) {
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spkac_usage();
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return (1);
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}
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if (!app_passwd(bio_err, cfg.passargin, NULL, &passin, NULL)) {
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BIO_printf(bio_err, "Error getting password\n");
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goto end;
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}
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if (cfg.keyfile) {
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pkey = load_key(bio_err,
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strcmp(cfg.keyfile, "-") ? cfg.keyfile
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: NULL, FORMAT_PEM, 1, passin, "private key");
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if (!pkey) {
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goto end;
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}
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spki = NETSCAPE_SPKI_new();
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if (cfg.challenge)
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ASN1_STRING_set(spki->spkac->challenge,
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cfg.challenge,
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(int) strlen(cfg.challenge));
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NETSCAPE_SPKI_set_pubkey(spki, pkey);
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NETSCAPE_SPKI_sign(spki, pkey, EVP_md5());
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spkstr = NETSCAPE_SPKI_b64_encode(spki);
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if (spkstr == NULL) {
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BIO_printf(bio_err, "Error encoding SPKAC\n");
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ERR_print_errors(bio_err);
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goto end;
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}
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if (cfg.outfile)
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out = BIO_new_file(cfg.outfile, "w");
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else
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out = BIO_new_fp(stdout, BIO_NOCLOSE);
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if (!out) {
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BIO_printf(bio_err, "Error opening output file\n");
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ERR_print_errors(bio_err);
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} else {
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BIO_printf(out, "SPKAC=%s\n", spkstr);
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ret = 0;
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}
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free(spkstr);
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goto end;
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}
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if (cfg.infile)
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in = BIO_new_file(cfg.infile, "r");
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else
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in = BIO_new_fp(stdin, BIO_NOCLOSE);
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if (!in) {
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BIO_printf(bio_err, "Error opening input file\n");
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ERR_print_errors(bio_err);
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goto end;
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}
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conf = NCONF_new(NULL);
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i = NCONF_load_bio(conf, in, NULL);
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if (!i) {
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BIO_printf(bio_err, "Error parsing config file\n");
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ERR_print_errors(bio_err);
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goto end;
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}
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spkstr = NCONF_get_string(conf, cfg.spksect,
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cfg.spkac);
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if (!spkstr) {
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BIO_printf(bio_err, "Can't find SPKAC called \"%s\"\n",
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cfg.spkac);
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ERR_print_errors(bio_err);
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goto end;
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}
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spki = NETSCAPE_SPKI_b64_decode(spkstr, -1);
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if (!spki) {
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BIO_printf(bio_err, "Error loading SPKAC\n");
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ERR_print_errors(bio_err);
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goto end;
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}
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if (cfg.outfile)
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out = BIO_new_file(cfg.outfile, "w");
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else {
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out = BIO_new_fp(stdout, BIO_NOCLOSE);
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}
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if (!out) {
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BIO_printf(bio_err, "Error opening output file\n");
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ERR_print_errors(bio_err);
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goto end;
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}
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if (!cfg.noout)
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NETSCAPE_SPKI_print(out, spki);
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pkey = NETSCAPE_SPKI_get_pubkey(spki);
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if (cfg.verify) {
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i = NETSCAPE_SPKI_verify(spki, pkey);
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if (i > 0)
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BIO_printf(bio_err, "Signature OK\n");
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else {
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BIO_printf(bio_err, "Signature Failure\n");
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ERR_print_errors(bio_err);
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goto end;
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}
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}
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if (cfg.pubkey)
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PEM_write_bio_PUBKEY(out, pkey);
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ret = 0;
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end:
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NCONF_free(conf);
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NETSCAPE_SPKI_free(spki);
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BIO_free(in);
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BIO_free_all(out);
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EVP_PKEY_free(pkey);
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free(passin);
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return (ret);
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}
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