xref: /openbsd-src/usr.bin/openssl/pkeyparam.c (revision 646e9a2ff357c2d5ef38314b399014ad7522b2ae)
1 /* $OpenBSD: pkeyparam.c,v 1.19 2024/08/29 17:01:02 tb Exp $ */
2 /* Written by Dr Stephen N Henson (steve@openssl.org) for the OpenSSL
3  * project 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 
59 #include <stdio.h>
60 #include <string.h>
61 
62 #include "apps.h"
63 
64 #include <openssl/err.h>
65 #include <openssl/evp.h>
66 #include <openssl/pem.h>
67 
68 static struct {
69 	char *infile;
70 	int noout;
71 	char *outfile;
72 	int text;
73 } cfg;
74 
75 static const struct option pkeyparam_options[] = {
76 	{
77 		.name = "in",
78 		.argname = "file",
79 		.desc = "Input file (default stdin)",
80 		.type = OPTION_ARG,
81 		.opt.arg = &cfg.infile,
82 	},
83 	{
84 		.name = "noout",
85 		.desc = "Do not print encoded version of the parameters",
86 		.type = OPTION_FLAG,
87 		.opt.flag = &cfg.noout,
88 	},
89 	{
90 		.name = "out",
91 		.argname = "file",
92 		.desc = "Output file (default stdout)",
93 		.type = OPTION_ARG,
94 		.opt.arg = &cfg.outfile,
95 	},
96 	{
97 		.name = "text",
98 		.desc = "Print out the parameters in plain text",
99 		.type = OPTION_FLAG,
100 		.opt.flag = &cfg.text,
101 	},
102 	{ NULL },
103 };
104 
105 static void
106 pkeyparam_usage(void)
107 {
108 	fprintf(stderr,
109 	    "usage: pkeyparam [-in file] [-noout] [-out file] [-text]\n");
110 	options_usage(pkeyparam_options);
111 }
112 
113 int
114 pkeyparam_main(int argc, char **argv)
115 {
116 	BIO *in = NULL, *out = NULL;
117 	EVP_PKEY *pkey = NULL;
118 	int ret = 1;
119 
120 	if (pledge("stdio cpath wpath rpath", NULL) == -1) {
121 		perror("pledge");
122 		exit(1);
123 	}
124 
125 	memset(&cfg, 0, sizeof(cfg));
126 
127 	if (options_parse(argc, argv, pkeyparam_options, NULL, NULL) != 0) {
128 		pkeyparam_usage();
129 		return (1);
130 	}
131 
132 	if (cfg.infile) {
133 		if (!(in = BIO_new_file(cfg.infile, "r"))) {
134 			BIO_printf(bio_err, "Can't open input file %s\n",
135 			    cfg.infile);
136 			goto end;
137 		}
138 	} else
139 		in = BIO_new_fp(stdin, BIO_NOCLOSE);
140 
141 	if (cfg.outfile) {
142 		if (!(out = BIO_new_file(cfg.outfile, "w"))) {
143 			BIO_printf(bio_err, "Can't open output file %s\n",
144 			    cfg.outfile);
145 			goto end;
146 		}
147 	} else {
148 		out = BIO_new_fp(stdout, BIO_NOCLOSE);
149 	}
150 
151 	pkey = PEM_read_bio_Parameters(in, NULL);
152 	if (!pkey) {
153 		BIO_printf(bio_err, "Error reading parameters\n");
154 		ERR_print_errors(bio_err);
155 		goto end;
156 	}
157 
158 	if (!cfg.noout)
159 		PEM_write_bio_Parameters(out, pkey);
160 
161 	if (cfg.text)
162 		EVP_PKEY_print_params(out, pkey, 0, NULL);
163 
164 	ret = 0;
165 
166  end:
167 	EVP_PKEY_free(pkey);
168 	BIO_free_all(out);
169 	BIO_free(in);
170 
171 	return ret;
172 }
173