1 /* $OpenBSD: pkcs7.c,v 1.15 2023/07/23 11:39:29 tb 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 #include <stdio.h>
60 #include <stdlib.h>
61 #include <string.h>
62 #include <time.h>
63
64 #include "apps.h"
65
66 #include <openssl/err.h>
67 #include <openssl/evp.h>
68 #include <openssl/objects.h>
69 #include <openssl/pem.h>
70 #include <openssl/pkcs7.h>
71 #include <openssl/x509.h>
72
73 static struct {
74 char *infile;
75 int informat;
76 int noout;
77 char *outfile;
78 int outformat;
79 int p7_print;
80 int print_certs;
81 int text;
82 } cfg;
83
84 static const struct option pkcs7_options[] = {
85 {
86 .name = "in",
87 .argname = "file",
88 .desc = "Input file (default stdin)",
89 .type = OPTION_ARG,
90 .opt.arg = &cfg.infile,
91 },
92 {
93 .name = "inform",
94 .argname = "format",
95 .desc = "Input format (DER or PEM (default))",
96 .type = OPTION_ARG_FORMAT,
97 .opt.value = &cfg.informat,
98 },
99 {
100 .name = "noout",
101 .desc = "Do not output encoded version of PKCS#7 structure",
102 .type = OPTION_FLAG,
103 .opt.flag = &cfg.noout,
104 },
105 {
106 .name = "out",
107 .argname = "file",
108 .desc = "Output file (default stdout)",
109 .type = OPTION_ARG,
110 .opt.arg = &cfg.outfile,
111 },
112 {
113 .name = "outform",
114 .argname = "format",
115 .desc = "Output format (DER or PEM (default))",
116 .type = OPTION_ARG_FORMAT,
117 .opt.value = &cfg.outformat,
118 },
119 {
120 .name = "print",
121 .desc = "Output ASN.1 representation of PKCS#7 structure",
122 .type = OPTION_FLAG,
123 .opt.flag = &cfg.p7_print,
124 },
125 {
126 .name = "print_certs",
127 .desc = "Print out any certificates or CRLs contained in file",
128 .type = OPTION_FLAG,
129 .opt.flag = &cfg.print_certs,
130 },
131 {
132 .name = "text",
133 .desc = "Print out full certificate details",
134 .type = OPTION_FLAG,
135 .opt.flag = &cfg.text,
136 },
137 { NULL },
138 };
139
140 static void
pkcs7_usage(void)141 pkcs7_usage(void)
142 {
143 fprintf(stderr, "usage: pkcs7 [-in file] "
144 "[-inform DER | PEM] [-noout]\n"
145 " [-out file] [-outform DER | PEM] [-print_certs] [-text]\n\n");
146 options_usage(pkcs7_options);
147 }
148
149 int
pkcs7_main(int argc,char ** argv)150 pkcs7_main(int argc, char **argv)
151 {
152 PKCS7 *p7 = NULL;
153 BIO *in = NULL, *out = NULL;
154 int ret = 1;
155 int i;
156
157 if (pledge("stdio cpath wpath rpath", NULL) == -1) {
158 perror("pledge");
159 exit(1);
160 }
161
162 memset(&cfg, 0, sizeof(cfg));
163
164 cfg.informat = FORMAT_PEM;
165 cfg.outformat = FORMAT_PEM;
166
167 if (options_parse(argc, argv, pkcs7_options, NULL, NULL) != 0) {
168 pkcs7_usage();
169 goto end;
170 }
171
172 in = BIO_new(BIO_s_file());
173 out = BIO_new(BIO_s_file());
174 if ((in == NULL) || (out == NULL)) {
175 ERR_print_errors(bio_err);
176 goto end;
177 }
178 if (cfg.infile == NULL)
179 BIO_set_fp(in, stdin, BIO_NOCLOSE);
180 else {
181 if (BIO_read_filename(in, cfg.infile) <= 0) {
182 perror(cfg.infile);
183 goto end;
184 }
185 }
186
187 if (cfg.informat == FORMAT_ASN1)
188 p7 = d2i_PKCS7_bio(in, NULL);
189 else if (cfg.informat == FORMAT_PEM)
190 p7 = PEM_read_bio_PKCS7(in, NULL, NULL, NULL);
191 else {
192 BIO_printf(bio_err, "bad input format specified for pkcs7 object\n");
193 goto end;
194 }
195 if (p7 == NULL) {
196 BIO_printf(bio_err, "unable to load PKCS7 object\n");
197 ERR_print_errors(bio_err);
198 goto end;
199 }
200 if (cfg.outfile == NULL) {
201 BIO_set_fp(out, stdout, BIO_NOCLOSE);
202 } else {
203 if (BIO_write_filename(out, cfg.outfile) <= 0) {
204 perror(cfg.outfile);
205 goto end;
206 }
207 }
208
209 if (cfg.p7_print)
210 PKCS7_print_ctx(out, p7, 0, NULL);
211
212 if (cfg.print_certs) {
213 STACK_OF(X509) * certs = NULL;
214 STACK_OF(X509_CRL) * crls = NULL;
215
216 i = OBJ_obj2nid(p7->type);
217 switch (i) {
218 case NID_pkcs7_signed:
219 if (p7->d.sign != NULL) {
220 certs = p7->d.sign->cert;
221 crls = p7->d.sign->crl;
222 }
223 break;
224 case NID_pkcs7_signedAndEnveloped:
225 if (p7->d.signed_and_enveloped != NULL) {
226 certs = p7->d.signed_and_enveloped->cert;
227 crls = p7->d.signed_and_enveloped->crl;
228 }
229 break;
230 default:
231 break;
232 }
233
234 if (certs != NULL) {
235 X509 *x;
236
237 for (i = 0; i < sk_X509_num(certs); i++) {
238 x = sk_X509_value(certs, i);
239 if (cfg.text)
240 X509_print(out, x);
241 else
242 dump_cert_text(out, x);
243
244 if (!cfg.noout)
245 PEM_write_bio_X509(out, x);
246 BIO_puts(out, "\n");
247 }
248 }
249 if (crls != NULL) {
250 X509_CRL *crl;
251
252 for (i = 0; i < sk_X509_CRL_num(crls); i++) {
253 crl = sk_X509_CRL_value(crls, i);
254
255 X509_CRL_print(out, crl);
256
257 if (!cfg.noout)
258 PEM_write_bio_X509_CRL(out, crl);
259 BIO_puts(out, "\n");
260 }
261 }
262 ret = 0;
263 goto end;
264 }
265 if (!cfg.noout) {
266 if (cfg.outformat == FORMAT_ASN1)
267 i = i2d_PKCS7_bio(out, p7);
268 else if (cfg.outformat == FORMAT_PEM)
269 i = PEM_write_bio_PKCS7(out, p7);
270 else {
271 BIO_printf(bio_err, "bad output format specified for outfile\n");
272 goto end;
273 }
274
275 if (!i) {
276 BIO_printf(bio_err, "unable to write pkcs7 object\n");
277 ERR_print_errors(bio_err);
278 goto end;
279 }
280 }
281 ret = 0;
282 end:
283 if (p7 != NULL)
284 PKCS7_free(p7);
285 if (in != NULL)
286 BIO_free(in);
287 if (out != NULL)
288 BIO_free_all(out);
289
290 return (ret);
291 }
292