pkeyparam.c revision 312826 
1/* apps/pkeyparam.c */
2/*
3 * Written by Dr Stephen N Henson (steve@openssl.org) for the OpenSSL project
4 * 2006
5 */
6/* ====================================================================
7 * Copyright (c) 2006 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#include <stdio.h>
60#include <string.h>
61#include "apps.h"
62#include <openssl/pem.h>
63#include <openssl/err.h>
64#include <openssl/evp.h>
65
66#define PROG pkeyparam_main
67
68int MAIN(int, char **);
69
70int MAIN(int argc, char **argv)
71{
72    char **args, *infile = NULL, *outfile = NULL;
73    BIO *in = NULL, *out = NULL;
74    int text = 0, noout = 0;
75    EVP_PKEY *pkey = NULL;
76    int badarg = 0;
77    char *engine = NULL;
78    ENGINE *e = NULL;
79    int ret = 1;
80
81    if (bio_err == NULL)
82        bio_err = BIO_new_fp(stderr, BIO_NOCLOSE);
83
84    if (!load_config(bio_err, NULL))
85        goto end;
86
87    ERR_load_crypto_strings();
88    OpenSSL_add_all_algorithms();
89    args = argv + 1;
90    while (!badarg && *args && *args[0] == '-') {
91        if (!strcmp(*args, "-in")) {
92            if (args[1]) {
93                args++;
94                infile = *args;
95            } else
96                badarg = 1;
97        } else if (!strcmp(*args, "-out")) {
98            if (args[1]) {
99                args++;
100                outfile = *args;
101            } else
102                badarg = 1;
103        }
104#ifndef OPENSSL_NO_ENGINE
105        else if (strcmp(*args, "-engine") == 0) {
106            if (!args[1])
107                goto bad;
108            engine = *(++args);
109        }
110#endif
111
112        else if (strcmp(*args, "-text") == 0)
113            text = 1;
114        else if (strcmp(*args, "-noout") == 0)
115            noout = 1;
116        args++;
117    }
118
119    if (badarg) {
120#ifndef OPENSSL_NO_ENGINE
121 bad:
122#endif
123        BIO_printf(bio_err, "Usage pkeyparam [options]\n");
124        BIO_printf(bio_err, "where options are\n");
125        BIO_printf(bio_err, "-in file        input file\n");
126        BIO_printf(bio_err, "-out file       output file\n");
127        BIO_printf(bio_err, "-text           print parameters as text\n");
128        BIO_printf(bio_err,
129                   "-noout          don't output encoded parameters\n");
130#ifndef OPENSSL_NO_ENGINE
131        BIO_printf(bio_err,
132                   "-engine e       use engine e, possibly a hardware device.\n");
133#endif
134        return 1;
135    }
136    e = setup_engine(bio_err, engine, 0);
137
138    if (infile) {
139        if (!(in = BIO_new_file(infile, "r"))) {
140            BIO_printf(bio_err, "Can't open input file %s\n", infile);
141            goto end;
142        }
143    } else
144        in = BIO_new_fp(stdin, BIO_NOCLOSE);
145
146    if (outfile) {
147        if (!(out = BIO_new_file(outfile, "w"))) {
148            BIO_printf(bio_err, "Can't open output file %s\n", outfile);
149            goto end;
150        }
151    } else {
152        out = BIO_new_fp(stdout, BIO_NOCLOSE);
153#ifdef OPENSSL_SYS_VMS
154        {
155            BIO *tmpbio = BIO_new(BIO_f_linebuffer());
156            out = BIO_push(tmpbio, out);
157        }
158#endif
159    }
160
161    pkey = PEM_read_bio_Parameters(in, NULL);
162    if (!pkey) {
163        BIO_printf(bio_err, "Error reading parameters\n");
164        ERR_print_errors(bio_err);
165        goto end;
166    }
167
168    if (!noout)
169        PEM_write_bio_Parameters(out, pkey);
170
171    if (text)
172        EVP_PKEY_print_params(out, pkey, 0, NULL);
173
174    ret = 0;
175
176 end:
177    EVP_PKEY_free(pkey);
178    release_engine(e);
179    BIO_free_all(out);
180    BIO_free(in);
181
182    return ret;
183}
184