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spkac.c

/* apps/spkac.c */

/* Written by Dr Stephen N Henson (steve@openssl.org) 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 > 0) 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);
      }

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