bin/openssl/spkac.c

   1 /* $OpenBSD: spkac.c,v 1.10 2018/02/07 05:47:55 jsing Exp $ */
   2 /* Written by Dr Stephen N Henson (steve@openssl.org) for the OpenSSL
   3  * project 1999. Based on an original idea by Massimiliano Pala
   4  * (madwolf@openca.org).
   5  */
   6 /* ====================================================================
   7  * Copyright (c) 1999 The OpenSSL Project.  All rights reserved.
   8  *
   9  * Redistribution and use in source and binary forms, with or without
  10  * modification, are permitted provided that the following conditions
  11  * are met:
  12  *
  13  * 1. Redistributions of source code must retain the above copyright
  14  *    notice, this list of conditions and the following disclaimer.
  15  *
  16  * 2. Redistributions in binary form must reproduce the above copyright
  17  *    notice, this list of conditions and the following disclaimer in
  18  *    the documentation and/or other materials provided with the
  19  *    distribution.
  20  *
  21  * 3. All advertising materials mentioning features or use of this
  22  *    software must display the following acknowledgment:
  23  *    "This product includes software developed by the OpenSSL Project
  24  *    for use in the OpenSSL Toolkit. (http://www.OpenSSL.org/)"
  25  *
  26  * 4. The names "OpenSSL Toolkit" and "OpenSSL Project" must not be used to
  27  *    endorse or promote products derived from this software without
  28  *    prior written permission. For written permission, please contact
  29  *    licensing@OpenSSL.org.
  30  *
  31  * 5. Products derived from this software may not be called "OpenSSL"
  32  *    nor may "OpenSSL" appear in their names without prior written
  33  *    permission of the OpenSSL Project.
  34  *
  35  * 6. Redistributions of any form whatsoever must retain the following
  36  *    acknowledgment:
  37  *    "This product includes software developed by the OpenSSL Project
  38  *    for use in the OpenSSL Toolkit (http://www.OpenSSL.org/)"
  39  *
  40  * THIS SOFTWARE IS PROVIDED BY THE OpenSSL PROJECT ``AS IS'' AND ANY
  41  * EXPRESSED OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
  42  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
  43  * PURPOSE ARE DISCLAIMED.  IN NO EVENT SHALL THE OpenSSL PROJECT OR
  44  * ITS CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
  45  * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
  46  * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
  47  * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
  48  * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT,
  49  * STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
  50  * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED
  51  * OF THE POSSIBILITY OF SUCH DAMAGE.
  52  * ====================================================================
  53  *
  54  * This product includes cryptographic software written by Eric Young
  55  * (eay@cryptsoft.com).  This product includes software written by Tim
  56  * Hudson (tjh@cryptsoft.com).
  57  *
  58  */
  59
  60 #include <stdio.h>
  61 #include <stdlib.h>
  62 #include <string.h>
  63 #include <time.h>
  64
  65 #include "apps.h"
  66 #include "progs.h"
  67
  68 #include <openssl/bio.h>
  69 #include <openssl/conf.h>
  70 #include <openssl/err.h>
  71 #include <openssl/evp.h>
  72 #include <openssl/lhash.h>
  73 #include <openssl/pem.h>
  74 #include <openssl/x509.h>
  75
  76 static struct {
  77         char *challenge;
  78         char *infile;
  79         char *keyfile;
  80         int noout;
  81         char *outfile;
  82         char *passargin;
  83         int pubkey;
  84         char *spkac;
  85         char *spksect;
  86         int verify;
  87 } spkac_config;
  88
  89 static struct option spkac_options[] = {
  90         {
  91                 .name = "challenge",
  92                 .argname = "string",
  93                 .desc = "Specify challenge string if SPKAC is generated",
  94                 .type = OPTION_ARG,
  95                 .opt.arg = &spkac_config.challenge,
  96         },
  97         {
  98                 .name = "in",
  99                 .argname = "file",
 100                 .desc = "Input file (default stdin)",
 101                 .type = OPTION_ARG,
 102                 .opt.arg = &spkac_config.infile,
 103         },
 104         {
 105                 .name = "key",
 106                 .argname = "file",
 107                 .desc = "Create SPKAC using private key file",
 108                 .type = OPTION_ARG,
 109                 .opt.arg = &spkac_config.keyfile,
 110         },
 111         {
 112                 .name = "noout",
 113                 .desc = "Do not print text version of SPKAC",
 114                 .type = OPTION_FLAG,
 115                 .opt.flag = &spkac_config.noout,
 116         },
 117         {
 118                 .name = "out",
 119                 .argname = "file",
 120                 .desc = "Output file (default stdout)",
 121                 .type = OPTION_ARG,
 122                 .opt.arg = &spkac_config.outfile,
 123         },
 124         {
 125                 .name = "passin",
 126                 .argname = "src",
 127                 .desc = "Input file passphrase source",
 128                 .type = OPTION_ARG,
 129                 .opt.arg = &spkac_config.passargin,
 130         },
 131         {
 132                 .name = "pubkey",
 133                 .desc = "Output public key of an SPKAC (not used if creating)",
 134                 .type = OPTION_FLAG,
 135                 .opt.flag = &spkac_config.pubkey,
 136         },
 137         {
 138                 .name = "spkac",
 139                 .argname = "name",
 140                 .desc = "SPKAC name (default \"SPKAC\")",
 141                 .type = OPTION_ARG,
 142                 .opt.arg = &spkac_config.spkac,
 143         },
 144         {
 145                 .name = "spksect",
 146                 .argname = "name",
 147                 .desc = "Name of the section containing SPKAC (default"
 148                 " \"default\")",
 149                 .type = OPTION_ARG,
 150                 .opt.arg = &spkac_config.spksect,
 151         },
 152         {
 153                 .name = "verify",
 154                 .desc = "Verify digital signature on supplied SPKAC",
 155                 .type = OPTION_FLAG,
 156                 .opt.flag = &spkac_config.verify,
 157         },
 158         { NULL }
 159 };
 160
 161 static void
 162 spkac_usage(void)
 163 {
 164         fprintf(stderr,
 165             "usage: spkac [-challenge string] [-in file] "
 166             "[-key file] [-noout]\n"
 167             "    [-out file] [-passin src] [-pubkey] [-spkac name] "
 168             "[-spksect section]\n"
 169             "    [-verify]\n\n");
 170         options_usage(spkac_options);
 171 }
 172
 173 int
 174 spkac_main(int argc, char **argv)
 175 {
 176         int i, ret = 1;
 177         BIO *in = NULL, *out = NULL;
 178         char *passin = NULL;
 179         char *spkstr = NULL;
 180         CONF *conf = NULL;
 181         NETSCAPE_SPKI *spki = NULL;
 182         EVP_PKEY *pkey = NULL;
 183
 184         if (single_execution) {
 185                 if (pledge("stdio cpath wpath rpath tty", NULL) == -1) {
 186                         perror("pledge");
 187                         exit(1);
 188                 }
 189         }
 190
 191         memset(&spkac_config, 0, sizeof(spkac_config));
 192         spkac_config.spkac = "SPKAC";
 193         spkac_config.spksect = "default";
 194
 195         if (options_parse(argc, argv, spkac_options, NULL, NULL) != 0) {
 196                 spkac_usage();
 197                 return (1);
 198         }
 199
 200         if (!app_passwd(bio_err, spkac_config.passargin, NULL, &passin, NULL)) {
 201                 BIO_printf(bio_err, "Error getting password\n");
 202                 goto end;
 203         }
 204
 205         if (spkac_config.keyfile) {
 206                 pkey = load_key(bio_err,
 207                     strcmp(spkac_config.keyfile, "-") ? spkac_config.keyfile
 208                     : NULL, FORMAT_PEM, 1, passin, "private key");
 209                 if (!pkey) {
 210                         goto end;
 211                 }
 212                 spki = NETSCAPE_SPKI_new();
 213                 if (spkac_config.challenge)
 214                         ASN1_STRING_set(spki->spkac->challenge,
 215                             spkac_config.challenge,
 216                             (int) strlen(spkac_config.challenge));
 217                 NETSCAPE_SPKI_set_pubkey(spki, pkey);
 218                 NETSCAPE_SPKI_sign(spki, pkey, EVP_md5());
 219                 spkstr = NETSCAPE_SPKI_b64_encode(spki);
 220                 if (spkstr == NULL) {
 221                         BIO_printf(bio_err, "Error encoding SPKAC\n");
 222                         ERR_print_errors(bio_err);
 223                         goto end;
 224                 }
 225
 226                 if (spkac_config.outfile)
 227                         out = BIO_new_file(spkac_config.outfile, "w");
 228                 else
 229                         out = BIO_new_fp(stdout, BIO_NOCLOSE);
 230
 231                 if (!out) {
 232                         BIO_printf(bio_err, "Error opening output file\n");
 233                         ERR_print_errors(bio_err);
 234                 } else {
 235                         BIO_printf(out, "SPKAC=%s\n", spkstr);
 236                         ret = 0;
 237                 }
 238                 free(spkstr);
 239                 goto end;
 240         }
 241         if (spkac_config.infile)
 242                 in = BIO_new_file(spkac_config.infile, "r");
 243         else
 244                 in = BIO_new_fp(stdin, BIO_NOCLOSE);
 245
 246         if (!in) {
 247                 BIO_printf(bio_err, "Error opening input file\n");
 248                 ERR_print_errors(bio_err);
 249                 goto end;
 250         }
 251         conf = NCONF_new(NULL);
 252         i = NCONF_load_bio(conf, in, NULL);
 253
 254         if (!i) {
 255                 BIO_printf(bio_err, "Error parsing config file\n");
 256                 ERR_print_errors(bio_err);
 257                 goto end;
 258         }
 259         spkstr = NCONF_get_string(conf, spkac_config.spksect,
 260             spkac_config.spkac);
 261
 262         if (!spkstr) {
 263                 BIO_printf(bio_err, "Can't find SPKAC called \"%s\"\n",
 264                     spkac_config.spkac);
 265                 ERR_print_errors(bio_err);
 266                 goto end;
 267         }
 268         spki = NETSCAPE_SPKI_b64_decode(spkstr, -1);
 269
 270         if (!spki) {
 271                 BIO_printf(bio_err, "Error loading SPKAC\n");
 272                 ERR_print_errors(bio_err);
 273                 goto end;
 274         }
 275         if (spkac_config.outfile)
 276                 out = BIO_new_file(spkac_config.outfile, "w");
 277         else {
 278                 out = BIO_new_fp(stdout, BIO_NOCLOSE);
 279         }
 280
 281         if (!out) {
 282                 BIO_printf(bio_err, "Error opening output file\n");
 283                 ERR_print_errors(bio_err);
 284                 goto end;
 285         }
 286         if (!spkac_config.noout)
 287                 NETSCAPE_SPKI_print(out, spki);
 288         pkey = NETSCAPE_SPKI_get_pubkey(spki);
 289         if (spkac_config.verify) {
 290                 i = NETSCAPE_SPKI_verify(spki, pkey);
 291                 if (i > 0)
 292                         BIO_printf(bio_err, "Signature OK\n");
 293                 else {
 294                         BIO_printf(bio_err, "Signature Failure\n");
 295                         ERR_print_errors(bio_err);
 296                         goto end;
 297                 }
 298         }
 299         if (spkac_config.pubkey)
 300                 PEM_write_bio_PUBKEY(out, pkey);
 301
 302         ret = 0;
 303
 304  end:
 305         NCONF_free(conf);
 306         NETSCAPE_SPKI_free(spki);
 307         BIO_free(in);
 308         BIO_free_all(out);
 309         EVP_PKEY_free(pkey);
 310         free(passin);
 311
 312         return (ret);
 313 }