apps/spkac.c

   1 /* apps/spkac.c */
   2
   3 /* Written by Dr Stephen N Henson (shenson@bigfoot.com) for the OpenSSL
   4  * project 1999. Based on an original idea by Massimiliano Pala
   5  * (madwolf@openca.org).
   6  */
   7 /* ====================================================================
   8  * Copyright (c) 1999 The OpenSSL Project.  All rights reserved.
   9  *
  10  * Redistribution and use in source and binary forms, with or without
  11  * modification, are permitted provided that the following conditions
  12  * are met:
  13  *
  14  * 1. Redistributions of source code must retain the above copyright
  15  *    notice, this list of conditions and the following disclaimer.
  16  *
  17  * 2. Redistributions in binary form must reproduce the above copyright
  18  *    notice, this list of conditions and the following disclaimer in
  19  *    the documentation and/or other materials provided with the
  20  *    distribution.
  21  *
  22  * 3. All advertising materials mentioning features or use of this
  23  *    software must display the following acknowledgment:
  24  *    "This product includes software developed by the OpenSSL Project
  25  *    for use in the OpenSSL Toolkit. (http://www.OpenSSL.org/)"
  26  *
  27  * 4. The names "OpenSSL Toolkit" and "OpenSSL Project" must not be used to
  28  *    endorse or promote products derived from this software without
  29  *    prior written permission. For written permission, please contact
  30  *    licensing@OpenSSL.org.
  31  *
  32  * 5. Products derived from this software may not be called "OpenSSL"
  33  *    nor may "OpenSSL" appear in their names without prior written
  34  *    permission of the OpenSSL Project.
  35  *
  36  * 6. Redistributions of any form whatsoever must retain the following
  37  *    acknowledgment:
  38  *    "This product includes software developed by the OpenSSL Project
  39  *    for use in the OpenSSL Toolkit (http://www.OpenSSL.org/)"
  40  *
  41  * THIS SOFTWARE IS PROVIDED BY THE OpenSSL PROJECT ``AS IS'' AND ANY
  42  * EXPRESSED OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
  43  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
  44  * PURPOSE ARE DISCLAIMED.  IN NO EVENT SHALL THE OpenSSL PROJECT OR
  45  * ITS CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
  46  * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
  47  * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
  48  * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
  49  * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT,
  50  * STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
  51  * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED
  52  * OF THE POSSIBILITY OF SUCH DAMAGE.
  53  * ====================================================================
  54  *
  55  * This product includes cryptographic software written by Eric Young
  56  * (eay@cryptsoft.com).  This product includes software written by Tim
  57  * Hudson (tjh@cryptsoft.com).
  58  *
  59  */
  60 #include <stdio.h>
  61 #include <stdlib.h>
  62 #include <string.h>
  63 #include <time.h>
  64 #include "apps.h"
  65 #include <openssl/bio.h>
  66 #include <openssl/err.h>
  67 #include <openssl/evp.h>
  68 #include <openssl/x509.h>
  69 #include <openssl/pem.h>
  70
  71 #undef PROG
  72 #define PROG    spkac_main
  73
  74 /* -in arg      - input file - default stdin
  75  * -out arg     - output file - default stdout
  76  */
  77
  78 int MAIN(int argc, char **argv)
  79         {
  80         int i,badops=0, ret = 1;
  81         BIO *in = NULL,*out = NULL, *key = NULL;
  82         int verify=0,noout=0,pubkey=0;
  83         char *infile = NULL,*outfile = NULL,*prog, *passin = NULL;
  84         char *spkac = "SPKAC", *spksect = "default", *spkstr = NULL;
  85         char *challenge = NULL, *keyfile = NULL;
  86         LHASH *conf = NULL;
  87         NETSCAPE_SPKI *spki = NULL;
  88         EVP_PKEY *pkey = NULL;
  89
  90         apps_startup();
  91
  92         if (!bio_err) bio_err = BIO_new_fp(stderr, BIO_NOCLOSE);
  93
  94         prog=argv[0];
  95         argc--;
  96         argv++;
  97         while (argc >= 1)
  98                 {
  99                 if (strcmp(*argv,"-in") == 0)
 100                         {
 101                         if (--argc < 1) goto bad;
 102                         infile= *(++argv);
 103                         }
 104                 else if (strcmp(*argv,"-out") == 0)
 105                         {
 106                         if (--argc < 1) goto bad;
 107                         outfile= *(++argv);
 108                         }
 109                 else if (strcmp(*argv,"-passin") == 0)
 110                         {
 111                         if (--argc < 1) goto bad;
 112                         passin= *(++argv);
 113                         }
 114                 else if (strcmp(*argv,"-envpassin") == 0)
 115                         {
 116                         if (--argc < 1) goto bad;
 117                                 if(!(passin= getenv(*(++argv))))
 118                                 {
 119                                 BIO_printf(bio_err,
 120                                  "Can't read environment variable %s\n",
 121                                                                 *argv);
 122                                 badops = 1;
 123                                 }
 124                         }
 125                 else if (strcmp(*argv,"-key") == 0)
 126                         {
 127                         if (--argc < 1) goto bad;
 128                         keyfile= *(++argv);
 129                         }
 130                 else if (strcmp(*argv,"-challenge") == 0)
 131                         {
 132                         if (--argc < 1) goto bad;
 133                         challenge= *(++argv);
 134                         }
 135                 else if (strcmp(*argv,"-spkac") == 0)
 136                         {
 137                         if (--argc < 1) goto bad;
 138                         spkac= *(++argv);
 139                         }
 140                 else if (strcmp(*argv,"-spksect") == 0)
 141                         {
 142                         if (--argc < 1) goto bad;
 143                         spksect= *(++argv);
 144                         }
 145                 else if (strcmp(*argv,"-noout") == 0)
 146                         noout=1;
 147                 else if (strcmp(*argv,"-pubkey") == 0)
 148                         pubkey=1;
 149                 else if (strcmp(*argv,"-verify") == 0)
 150                         verify=1;
 151                 else badops = 1;
 152                 argc--;
 153                 argv++;
 154                 }
 155
 156         if (badops)
 157                 {
 158 bad:
 159                 BIO_printf(bio_err,"%s [options]\n",prog);
 160                 BIO_printf(bio_err,"where options are\n");
 161                 BIO_printf(bio_err," -in arg        input file\n");
 162                 BIO_printf(bio_err," -out arg       output file\n");
 163                 BIO_printf(bio_err," -key arg       create SPKAC using private key\n");
 164                 BIO_printf(bio_err," -passin arg    input file pass phrase\n");
 165                 BIO_printf(bio_err," -envpassin arg environment variable containing input file pass phrase\n");
 166                 BIO_printf(bio_err," -challenge arg challenge string\n");
 167                 BIO_printf(bio_err," -spkac arg     alternative SPKAC name\n");
 168                 BIO_printf(bio_err," -noout         don't print SPKAC\n");
 169                 BIO_printf(bio_err," -pubkey        output public key\n");
 170                 BIO_printf(bio_err," -verify        verify SPKAC signature\n");
 171                 goto end;
 172                 }
 173
 174         ERR_load_crypto_strings();
 175
 176         if(keyfile) {
 177                 if(strcmp(keyfile, "-")) key = BIO_new_file(keyfile, "r");
 178                 else key = BIO_new_fp(stdin, BIO_NOCLOSE);
 179                 if(!key) {
 180                         BIO_printf(bio_err, "Error opening key file\n");
 181                         ERR_print_errors(bio_err);
 182                         goto end;
 183                 }
 184                 pkey = PEM_read_bio_PrivateKey(key, NULL, PEM_cb, passin);
 185                 if(!pkey) {
 186                         BIO_printf(bio_err, "Error reading private key\n");
 187                         ERR_print_errors(bio_err);
 188                         goto end;
 189                 }
 190                 spki = NETSCAPE_SPKI_new();
 191                 if(challenge) ASN1_STRING_set(spki->spkac->challenge,
 192                                                  challenge, strlen(challenge));
 193                 NETSCAPE_SPKI_set_pubkey(spki, pkey);
 194                 NETSCAPE_SPKI_sign(spki, pkey, EVP_md5());
 195                 spkstr = NETSCAPE_SPKI_b64_encode(spki);
 196
 197                 if (outfile) out = BIO_new_file(outfile, "w");
 198                 else out = BIO_new_fp(stdout, BIO_NOCLOSE);
 199
 200                 if(!out) {
 201                         BIO_printf(bio_err, "Error opening output file\n");
 202                         ERR_print_errors(bio_err);
 203                         goto end;
 204                 }
 205                 BIO_printf(out, "SPKAC=%s\n", spkstr);
 206                 Free(spkstr);
 207                 ret = 0;
 208                 goto end;
 209         }
 210
 211
 212
 213         if (infile) in = BIO_new_file(infile, "r");
 214         else in = BIO_new_fp(stdin, BIO_NOCLOSE);
 215
 216         if(!in) {
 217                 BIO_printf(bio_err, "Error opening input file\n");
 218                 ERR_print_errors(bio_err);
 219                 goto end;
 220         }
 221
 222         conf = CONF_load_bio(NULL, in, NULL);
 223
 224         if(!conf) {
 225                 BIO_printf(bio_err, "Error parsing config file\n");
 226                 ERR_print_errors(bio_err);
 227                 goto end;
 228         }
 229
 230         spkstr = CONF_get_string(conf, spksect, spkac);
 231
 232         if(!spkstr) {
 233                 BIO_printf(bio_err, "Can't find SPKAC called \"%s\"\n", spkac);
 234                 ERR_print_errors(bio_err);
 235                 goto end;
 236         }
 237
 238         spki = NETSCAPE_SPKI_b64_decode(spkstr, -1);
 239
 240         if(!spki) {
 241                 BIO_printf(bio_err, "Error loading SPKAC\n");
 242                 ERR_print_errors(bio_err);
 243                 goto end;
 244         }
 245
 246         if (outfile) out = BIO_new_file(outfile, "w");
 247         else out = BIO_new_fp(stdout, BIO_NOCLOSE);
 248
 249         if(!out) {
 250                 BIO_printf(bio_err, "Error opening output file\n");
 251                 ERR_print_errors(bio_err);
 252                 goto end;
 253         }
 254
 255         if(!noout) NETSCAPE_SPKI_print(out, spki);
 256         pkey = NETSCAPE_SPKI_get_pubkey(spki);
 257         if(verify) {
 258                 i = NETSCAPE_SPKI_verify(spki, pkey);
 259                 if(i) BIO_printf(bio_err, "Signature OK\n");
 260                 else {
 261                         BIO_printf(bio_err, "Signature Failure\n");
 262                         ERR_print_errors(bio_err);
 263                         goto end;
 264                 }
 265         }
 266         if(pubkey) PEM_write_bio_PUBKEY(out, pkey);
 267
 268         ret = 0;
 269
 270 end:
 271         CONF_free(conf);
 272         NETSCAPE_SPKI_free(spki);
 273         BIO_free(in);
 274         BIO_free(out);
 275         BIO_free(key);
 276         EVP_PKEY_free(pkey);
 277         EXIT(ret);
 278         }