apps/pkeyparam.c

   1 /*
   2  * Written by Dr Stephen N Henson (steve@openssl.org) for the OpenSSL project
   3  * 2006
   4  */
   5 /* ====================================================================
   6  * Copyright (c) 2006 The OpenSSL Project.  All rights reserved.
   7  *
   8  * Redistribution and use in source and binary forms, with or without
   9  * modification, are permitted provided that the following conditions
  10  * are met:
  11  *
  12  * 1. Redistributions of source code must retain the above copyright
  13  *    notice, this list of conditions and the following disclaimer.
  14  *
  15  * 2. Redistributions in binary form must reproduce the above copyright
  16  *    notice, this list of conditions and the following disclaimer in
  17  *    the documentation and/or other materials provided with the
  18  *    distribution.
  19  *
  20  * 3. All advertising materials mentioning features or use of this
  21  *    software must display the following acknowledgment:
  22  *    "This product includes software developed by the OpenSSL Project
  23  *    for use in the OpenSSL Toolkit. (http://www.OpenSSL.org/)"
  24  *
  25  * 4. The names "OpenSSL Toolkit" and "OpenSSL Project" must not be used to
  26  *    endorse or promote products derived from this software without
  27  *    prior written permission. For written permission, please contact
  28  *    licensing@OpenSSL.org.
  29  *
  30  * 5. Products derived from this software may not be called "OpenSSL"
  31  *    nor may "OpenSSL" appear in their names without prior written
  32  *    permission of the OpenSSL Project.
  33  *
  34  * 6. Redistributions of any form whatsoever must retain the following
  35  *    acknowledgment:
  36  *    "This product includes software developed by the OpenSSL Project
  37  *    for use in the OpenSSL Toolkit (http://www.OpenSSL.org/)"
  38  *
  39  * THIS SOFTWARE IS PROVIDED BY THE OpenSSL PROJECT ``AS IS'' AND ANY
  40  * EXPRESSED OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
  41  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
  42  * PURPOSE ARE DISCLAIMED.  IN NO EVENT SHALL THE OpenSSL PROJECT OR
  43  * ITS CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
  44  * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
  45  * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
  46  * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
  47  * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT,
  48  * STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
  49  * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED
  50  * OF THE POSSIBILITY OF SUCH DAMAGE.
  51  * ====================================================================
  52  *
  53  * This product includes cryptographic software written by Eric Young
  54  * (eay@cryptsoft.com).  This product includes software written by Tim
  55  * Hudson (tjh@cryptsoft.com).
  56  *
  57  */
  58 #include <stdio.h>
  59 #include <string.h>
  60 #include "apps.h"
  61 #include <openssl/pem.h>
  62 #include <openssl/err.h>
  63 #include <openssl/evp.h>
  64
  65 typedef enum OPTION_choice {
  66     OPT_ERR = -1, OPT_EOF = 0, OPT_HELP,
  67     OPT_IN, OPT_OUT, OPT_TEXT, OPT_NOOUT, OPT_ENGINE
  68 } OPTION_CHOICE;
  69
  70 OPTIONS pkeyparam_options[] = {
  71     {"help", OPT_HELP, '-', "Display this summary"},
  72     {"in", OPT_IN, '<', "Input file"},
  73     {"out", OPT_OUT, '>', "Output file"},
  74     {"text", OPT_TEXT, '-', "Print parameters as text"},
  75     {"noout", OPT_NOOUT, '-', "Don't output encoded parameters"},
  76 #ifndef OPENSSL_NO_ENGINE
  77     {"engine", OPT_ENGINE, 's', "Use engine, possibly a hardware device"},
  78 #endif
  79     {NULL}
  80 };
  81
  82 int pkeyparam_main(int argc, char **argv)
  83 {
  84     BIO *in = NULL, *out = NULL;
  85     EVP_PKEY *pkey = NULL;
  86     int text = 0, noout = 0, ret = 1;
  87     OPTION_CHOICE o;
  88     char *infile = NULL, *outfile = NULL, *prog;
  89
  90     prog = opt_init(argc, argv, pkeyparam_options);
  91     while ((o = opt_next()) != OPT_EOF) {
  92         switch (o) {
  93         case OPT_EOF:
  94         case OPT_ERR:
  95             BIO_printf(bio_err, "%s: Use -help for summary.\n", prog);
  96             goto end;
  97         case OPT_HELP:
  98             opt_help(pkeyparam_options);
  99             ret = 0;
 100             goto end;
 101         case OPT_IN:
 102             infile = opt_arg();
 103             break;
 104         case OPT_OUT:
 105             outfile = opt_arg();
 106             break;
 107         case OPT_ENGINE:
 108             (void)setup_engine(opt_arg(), 0);
 109             break;
 110         case OPT_TEXT:
 111             text = 1;
 112             break;
 113         case OPT_NOOUT:
 114             noout = 1;
 115             break;
 116         }
 117     }
 118     argc = opt_num_rest();
 119     argv = opt_rest();
 120
 121     in = bio_open_default(infile, "r");
 122     if (in == NULL)
 123         goto end;
 124     out = bio_open_default(outfile, "w");
 125     if (out == NULL)
 126         goto end;
 127     pkey = PEM_read_bio_Parameters(in, NULL);
 128     if (!pkey) {
 129         BIO_printf(bio_err, "Error reading parameters\n");
 130         ERR_print_errors(bio_err);
 131         goto end;
 132     }
 133
 134     if (!noout)
 135         PEM_write_bio_Parameters(out, pkey);
 136
 137     if (text)
 138         EVP_PKEY_print_params(out, pkey, 0, NULL);
 139
 140     ret = 0;
 141
 142  end:
 143     EVP_PKEY_free(pkey);
 144     BIO_free_all(out);
 145     BIO_free(in);
 146
 147     return ret;
 148 }