spkac.c revision 325337 
1/* apps/spkac.c */
2
3/*
4 * Written by Dr Stephen N Henson (steve@openssl.org) for the OpenSSL project
5 * 1999. Based on an original idea by Massimiliano Pala (madwolf@openca.org).
6 */
7/* ====================================================================
8 * Copyright (c) 1999-2017 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/conf.h>
67#include <openssl/err.h>
68#include <openssl/evp.h>
69#include <openssl/lhash.h>
70#include <openssl/x509.h>
71#include <openssl/pem.h>
72
73#undef PROG
74#define PROG    spkac_main
75
76/*-
77 * -in arg      - input file - default stdin
78 * -out arg     - output file - default stdout
79 */
80
81int MAIN(int, char **);
82
83int MAIN(int argc, char **argv)
84{
85    ENGINE *e = NULL;
86    int i, badops = 0, ret = 1;
87    BIO *in = NULL, *out = NULL;
88    int verify = 0, noout = 0, pubkey = 0;
89    char *infile = NULL, *outfile = NULL, *prog;
90    char *passargin = NULL, *passin = NULL;
91    const char *spkac = "SPKAC", *spksect = "default";
92    char *spkstr = NULL;
93    char *challenge = NULL, *keyfile = NULL;
94    CONF *conf = NULL;
95    NETSCAPE_SPKI *spki = NULL;
96    EVP_PKEY *pkey = NULL;
97    char *engine = NULL;
98
99    apps_startup();
100
101    if (!bio_err)
102        bio_err = BIO_new_fp(stderr, BIO_NOCLOSE);
103
104    if (!load_config(bio_err, NULL))
105        goto end;
106
107    prog = argv[0];
108    argc--;
109    argv++;
110    while (argc >= 1) {
111        if (strcmp(*argv, "-in") == 0) {
112            if (--argc < 1)
113                goto bad;
114            infile = *(++argv);
115        } else if (strcmp(*argv, "-out") == 0) {
116            if (--argc < 1)
117                goto bad;
118            outfile = *(++argv);
119        } else if (strcmp(*argv, "-passin") == 0) {
120            if (--argc < 1)
121                goto bad;
122            passargin = *(++argv);
123        } else if (strcmp(*argv, "-key") == 0) {
124            if (--argc < 1)
125                goto bad;
126            keyfile = *(++argv);
127        } else if (strcmp(*argv, "-challenge") == 0) {
128            if (--argc < 1)
129                goto bad;
130            challenge = *(++argv);
131        } else if (strcmp(*argv, "-spkac") == 0) {
132            if (--argc < 1)
133                goto bad;
134            spkac = *(++argv);
135        } else if (strcmp(*argv, "-spksect") == 0) {
136            if (--argc < 1)
137                goto bad;
138            spksect = *(++argv);
139        }
140#ifndef OPENSSL_NO_ENGINE
141        else if (strcmp(*argv, "-engine") == 0) {
142            if (--argc < 1)
143                goto bad;
144            engine = *(++argv);
145        }
146#endif
147        else if (strcmp(*argv, "-noout") == 0)
148            noout = 1;
149        else if (strcmp(*argv, "-pubkey") == 0)
150            pubkey = 1;
151        else if (strcmp(*argv, "-verify") == 0)
152            verify = 1;
153        else
154            badops = 1;
155        argc--;
156        argv++;
157    }
158
159    if (badops) {
160 bad:
161        BIO_printf(bio_err, "%s [options]\n", prog);
162        BIO_printf(bio_err, "where options are\n");
163        BIO_printf(bio_err, " -in arg        input file\n");
164        BIO_printf(bio_err, " -out arg       output file\n");
165        BIO_printf(bio_err,
166                   " -key arg       create SPKAC using private key\n");
167        BIO_printf(bio_err,
168                   " -passin arg    input file pass phrase source\n");
169        BIO_printf(bio_err, " -challenge arg challenge string\n");
170        BIO_printf(bio_err, " -spkac arg     alternative SPKAC name\n");
171        BIO_printf(bio_err, " -noout         don't print SPKAC\n");
172        BIO_printf(bio_err, " -pubkey        output public key\n");
173        BIO_printf(bio_err, " -verify        verify SPKAC signature\n");
174#ifndef OPENSSL_NO_ENGINE
175        BIO_printf(bio_err,
176                   " -engine e      use engine e, possibly a hardware device.\n");
177#endif
178        goto end;
179    }
180
181    ERR_load_crypto_strings();
182    if (!app_passwd(bio_err, passargin, NULL, &passin, NULL)) {
183        BIO_printf(bio_err, "Error getting password\n");
184        goto end;
185    }
186    e = setup_engine(bio_err, engine, 0);
187
188    if (keyfile != NULL) {
189        pkey = load_key(bio_err,
190                        strcmp(keyfile, "-") ? keyfile : NULL,
191                        FORMAT_PEM, 1, passin, e, "private key");
192        if (pkey == NULL)
193            goto end;
194        spki = NETSCAPE_SPKI_new();
195        if (spki == NULL)
196            goto end;
197        if (challenge != NULL)
198            ASN1_STRING_set(spki->spkac->challenge,
199                            challenge, (int)strlen(challenge));
200        NETSCAPE_SPKI_set_pubkey(spki, pkey);
201        NETSCAPE_SPKI_sign(spki, pkey, EVP_md5());
202        spkstr = NETSCAPE_SPKI_b64_encode(spki);
203        if (spkstr == NULL)
204            goto end;
205
206        if (outfile)
207            out = BIO_new_file(outfile, "w");
208        else {
209            out = BIO_new_fp(stdout, BIO_NOCLOSE);
210#ifdef OPENSSL_SYS_VMS
211            {
212                BIO *tmpbio = BIO_new(BIO_f_linebuffer());
213                out = BIO_push(tmpbio, out);
214            }
215#endif
216        }
217
218        if (!out) {
219            BIO_printf(bio_err, "Error opening output file\n");
220            ERR_print_errors(bio_err);
221            goto end;
222        }
223        BIO_printf(out, "SPKAC=%s\n", spkstr);
224        OPENSSL_free(spkstr);
225        ret = 0;
226        goto end;
227    }
228
229    if (infile)
230        in = BIO_new_file(infile, "r");
231    else
232        in = BIO_new_fp(stdin, BIO_NOCLOSE);
233
234    if (!in) {
235        BIO_printf(bio_err, "Error opening input file\n");
236        ERR_print_errors(bio_err);
237        goto end;
238    }
239
240    conf = NCONF_new(NULL);
241    i = NCONF_load_bio(conf, in, NULL);
242
243    if (!i) {
244        BIO_printf(bio_err, "Error parsing config file\n");
245        ERR_print_errors(bio_err);
246        goto end;
247    }
248
249    spkstr = NCONF_get_string(conf, spksect, spkac);
250
251    if (!spkstr) {
252        BIO_printf(bio_err, "Can't find SPKAC called \"%s\"\n", spkac);
253        ERR_print_errors(bio_err);
254        goto end;
255    }
256
257    spki = NETSCAPE_SPKI_b64_decode(spkstr, -1);
258
259    if (spki == NULL) {
260        BIO_printf(bio_err, "Error loading SPKAC\n");
261        ERR_print_errors(bio_err);
262        goto end;
263    }
264
265    if (outfile)
266        out = BIO_new_file(outfile, "w");
267    else {
268        out = BIO_new_fp(stdout, BIO_NOCLOSE);
269#ifdef OPENSSL_SYS_VMS
270        {
271            BIO *tmpbio = BIO_new(BIO_f_linebuffer());
272            out = BIO_push(tmpbio, out);
273        }
274#endif
275    }
276
277    if (!out) {
278        BIO_printf(bio_err, "Error opening output file\n");
279        ERR_print_errors(bio_err);
280        goto end;
281    }
282
283    if (!noout)
284        NETSCAPE_SPKI_print(out, spki);
285    pkey = NETSCAPE_SPKI_get_pubkey(spki);
286    if (verify) {
287        i = NETSCAPE_SPKI_verify(spki, pkey);
288        if (i > 0) {
289            BIO_printf(bio_err, "Signature OK\n");
290        } else {
291            BIO_printf(bio_err, "Signature Failure\n");
292            ERR_print_errors(bio_err);
293            goto end;
294        }
295    }
296    if (pubkey)
297        PEM_write_bio_PUBKEY(out, pkey);
298
299    ret = 0;
300
301 end:
302    NCONF_free(conf);
303    NETSCAPE_SPKI_free(spki);
304    BIO_free(in);
305    BIO_free_all(out);
306    EVP_PKEY_free(pkey);
307    release_engine(e);
308    if (passin)
309        OPENSSL_free(passin);
310    apps_shutdown();
311    OPENSSL_EXIT(ret);
312}
313