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1/* $OpenBSD: crl2p7.c,v 1.1 2014/08/26 17:47:24 jsing Exp $ */
2/* Copyright (C) 1995-1998 Eric Young (eay@cryptsoft.com)
3 * All rights reserved.
4 *
5 * This package is an SSL implementation written
6 * by Eric Young (eay@cryptsoft.com).
7 * The implementation was written so as to conform with Netscapes SSL.
8 *
9 * This library is free for commercial and non-commercial use as long as
10 * the following conditions are aheared to. The following conditions
11 * apply to all code found in this distribution, be it the RC4, RSA,
12 * lhash, DES, etc., code; not just the SSL code. The SSL documentation
13 * included with this distribution is covered by the same copyright terms
14 * except that the holder is Tim Hudson (tjh@cryptsoft.com).
15 *
16 * Copyright remains Eric Young's, and as such any Copyright notices in
17 * the code are not to be removed.
18 * If this package is used in a product, Eric Young should be given attribution
19 * as the author of the parts of the library used.
20 * This can be in the form of a textual message at program startup or
21 * in documentation (online or textual) provided with the package.
22 *
23 * Redistribution and use in source and binary forms, with or without
24 * modification, are permitted provided that the following conditions
25 * are met:
26 * 1. Redistributions of source code must retain the copyright
27 * notice, this list of conditions and the following disclaimer.
28 * 2. Redistributions in binary form must reproduce the above copyright
29 * notice, this list of conditions and the following disclaimer in the
30 * documentation and/or other materials provided with the distribution.
31 * 3. All advertising materials mentioning features or use of this software
32 * must display the following acknowledgement:
33 * "This product includes cryptographic software written by
34 * Eric Young (eay@cryptsoft.com)"
35 * The word 'cryptographic' can be left out if the rouines from the library
36 * being used are not cryptographic related :-).
37 * 4. If you include any Windows specific code (or a derivative thereof) from
38 * the apps directory (application code) you must include an acknowledgement:
39 * "This product includes software written by Tim Hudson (tjh@cryptsoft.com)"
40 *
41 * THIS SOFTWARE IS PROVIDED BY ERIC YOUNG ``AS IS'' AND
42 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
43 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
44 * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
45 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
46 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
47 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
48 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
49 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
50 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
51 * SUCH DAMAGE.
52 *
53 * The licence and distribution terms for any publically available version or
54 * derivative of this code cannot be changed. i.e. this code cannot simply be
55 * copied and put under another distribution licence
56 * [including the GNU Public Licence.]
57 */
58
59/* This was written by Gordon Chaffee <chaffee@plateau.cs.berkeley.edu>
60 * and donated 'to the cause' along with lots and lots of other fixes to
61 * the library. */
62
63#include <sys/types.h>
64
65#include <stdio.h>
66#include <string.h>
67
68#include "apps.h"
69
70#include <openssl/err.h>
71#include <openssl/evp.h>
72#include <openssl/objects.h>
73#include <openssl/pem.h>
74#include <openssl/pkcs7.h>
75#include <openssl/x509.h>
76
77static int add_certs_from_file(STACK_OF(X509) * stack, char *certfile);
78
79/* -inform arg - input format - default PEM (DER or PEM)
80 * -outform arg - output format - default PEM
81 * -in arg - input file - default stdin
82 * -out arg - output file - default stdout
83 */
84
85int crl2pkcs7_main(int, char **);
86
87int
88crl2pkcs7_main(int argc, char **argv)
89{
90 int i, badops = 0;
91 BIO *in = NULL, *out = NULL;
92 int informat, outformat;
93 char *infile, *outfile, *prog, *certfile;
94 PKCS7 *p7 = NULL;
95 PKCS7_SIGNED *p7s = NULL;
96 X509_CRL *crl = NULL;
97 STACK_OF(OPENSSL_STRING) * certflst = NULL;
98 STACK_OF(X509_CRL) * crl_stack = NULL;
99 STACK_OF(X509) * cert_stack = NULL;
100 int ret = 1, nocrl = 0;
101
102 infile = NULL;
103 outfile = NULL;
104 informat = FORMAT_PEM;
105 outformat = FORMAT_PEM;
106
107 prog = argv[0];
108 argc--;
109 argv++;
110 while (argc >= 1) {
111 if (strcmp(*argv, "-inform") == 0) {
112 if (--argc < 1)
113 goto bad;
114 informat = str2fmt(*(++argv));
115 } else if (strcmp(*argv, "-outform") == 0) {
116 if (--argc < 1)
117 goto bad;
118 outformat = str2fmt(*(++argv));
119 } else if (strcmp(*argv, "-in") == 0) {
120 if (--argc < 1)
121 goto bad;
122 infile = *(++argv);
123 } else if (strcmp(*argv, "-nocrl") == 0) {
124 nocrl = 1;
125 } else if (strcmp(*argv, "-out") == 0) {
126 if (--argc < 1)
127 goto bad;
128 outfile = *(++argv);
129 } else if (strcmp(*argv, "-certfile") == 0) {
130 if (--argc < 1)
131 goto bad;
132 if (!certflst)
133 certflst = sk_OPENSSL_STRING_new_null();
134 sk_OPENSSL_STRING_push(certflst, *(++argv));
135 } else {
136 BIO_printf(bio_err, "unknown option %s\n", *argv);
137 badops = 1;
138 break;
139 }
140 argc--;
141 argv++;
142 }
143
144 if (badops) {
145bad:
146 BIO_printf(bio_err, "%s [options] <infile >outfile\n", prog);
147 BIO_printf(bio_err, "where options are\n");
148 BIO_printf(bio_err, " -inform arg input format - DER or PEM\n");
149 BIO_printf(bio_err, " -outform arg output format - DER or PEM\n");
150 BIO_printf(bio_err, " -in arg input file\n");
151 BIO_printf(bio_err, " -out arg output file\n");
152 BIO_printf(bio_err, " -certfile arg certificates file of chain to a trusted CA\n");
153 BIO_printf(bio_err, " (can be used more than once)\n");
154 BIO_printf(bio_err, " -nocrl no crl to load, just certs from '-certfile'\n");
155 ret = 1;
156 goto end;
157 }
158 ERR_load_crypto_strings();
159
160 in = BIO_new(BIO_s_file());
161 out = BIO_new(BIO_s_file());
162 if ((in == NULL) || (out == NULL)) {
163 ERR_print_errors(bio_err);
164 goto end;
165 }
166 if (!nocrl) {
167 if (infile == NULL)
168 BIO_set_fp(in, stdin, BIO_NOCLOSE);
169 else {
170 if (BIO_read_filename(in, infile) <= 0) {
171 perror(infile);
172 goto end;
173 }
174 }
175
176 if (informat == FORMAT_ASN1)
177 crl = d2i_X509_CRL_bio(in, NULL);
178 else if (informat == FORMAT_PEM)
179 crl = PEM_read_bio_X509_CRL(in, NULL, NULL, NULL);
180 else {
181 BIO_printf(bio_err,
182 "bad input format specified for input crl\n");
183 goto end;
184 }
185 if (crl == NULL) {
186 BIO_printf(bio_err, "unable to load CRL\n");
187 ERR_print_errors(bio_err);
188 goto end;
189 }
190 }
191 if ((p7 = PKCS7_new()) == NULL)
192 goto end;
193 if ((p7s = PKCS7_SIGNED_new()) == NULL)
194 goto end;
195 p7->type = OBJ_nid2obj(NID_pkcs7_signed);
196 p7->d.sign = p7s;
197 p7s->contents->type = OBJ_nid2obj(NID_pkcs7_data);
198
199 if (!ASN1_INTEGER_set(p7s->version, 1))
200 goto end;
201 if ((crl_stack = sk_X509_CRL_new_null()) == NULL)
202 goto end;
203 p7s->crl = crl_stack;
204 if (crl != NULL) {
205 sk_X509_CRL_push(crl_stack, crl);
206 crl = NULL; /* now part of p7 for freeing */
207 }
208 if ((cert_stack = sk_X509_new_null()) == NULL)
209 goto end;
210 p7s->cert = cert_stack;
211
212 if (certflst)
213 for (i = 0; i < sk_OPENSSL_STRING_num(certflst); i++) {
214 certfile = sk_OPENSSL_STRING_value(certflst, i);
215 if (add_certs_from_file(cert_stack, certfile) < 0) {
216 BIO_printf(bio_err,
217 "error loading certificates\n");
218 ERR_print_errors(bio_err);
219 goto end;
220 }
221 }
222
223 sk_OPENSSL_STRING_free(certflst);
224
225 if (outfile == NULL) {
226 BIO_set_fp(out, stdout, BIO_NOCLOSE);
227 } else {
228 if (BIO_write_filename(out, outfile) <= 0) {
229 perror(outfile);
230 goto end;
231 }
232 }
233
234 if (outformat == FORMAT_ASN1)
235 i = i2d_PKCS7_bio(out, p7);
236 else if (outformat == FORMAT_PEM)
237 i = PEM_write_bio_PKCS7(out, p7);
238 else {
239 BIO_printf(bio_err,
240 "bad output format specified for outfile\n");
241 goto end;
242 }
243 if (!i) {
244 BIO_printf(bio_err, "unable to write pkcs7 object\n");
245 ERR_print_errors(bio_err);
246 goto end;
247 }
248 ret = 0;
249
250end:
251 if (in != NULL)
252 BIO_free(in);
253 if (out != NULL)
254 BIO_free_all(out);
255 if (p7 != NULL)
256 PKCS7_free(p7);
257 if (crl != NULL)
258 X509_CRL_free(crl);
259
260
261 return (ret);
262}
263
264/*
265 *----------------------------------------------------------------------
266 * int add_certs_from_file
267 *
268 * Read a list of certificates to be checked from a file.
269 *
270 * Results:
271 * number of certs added if successful, -1 if not.
272 *----------------------------------------------------------------------
273 */
274static int
275add_certs_from_file(STACK_OF(X509) * stack, char *certfile)
276{
277 BIO *in = NULL;
278 int count = 0;
279 int ret = -1;
280 STACK_OF(X509_INFO) * sk = NULL;
281 X509_INFO *xi;
282
283 in = BIO_new(BIO_s_file());
284 if ((in == NULL) || (BIO_read_filename(in, certfile) <= 0)) {
285 BIO_printf(bio_err, "error opening the file, %s\n", certfile);
286 goto end;
287 }
288 /* This loads from a file, a stack of x509/crl/pkey sets */
289 sk = PEM_X509_INFO_read_bio(in, NULL, NULL, NULL);
290 if (sk == NULL) {
291 BIO_printf(bio_err, "error reading the file, %s\n", certfile);
292 goto end;
293 }
294 /* scan over it and pull out the CRL's */
295 while (sk_X509_INFO_num(sk)) {
296 xi = sk_X509_INFO_shift(sk);
297 if (xi->x509 != NULL) {
298 sk_X509_push(stack, xi->x509);
299 xi->x509 = NULL;
300 count++;
301 }
302 X509_INFO_free(xi);
303 }
304
305 ret = count;
306
307end:
308 /* never need to free x */
309 if (in != NULL)
310 BIO_free(in);
311 if (sk != NULL)
312 sk_X509_INFO_free(sk);
313 return (ret);
314}