1 /* $OpenBSD: pkcs7.c,v 1.12 2022/11/11 17:07:39 joshua 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 } pkcs7_config; 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 = &pkcs7_config.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 = &pkcs7_config.informat, 98 }, 99 { 100 .name = "noout", 101 .desc = "Do not output encoded version of PKCS#7 structure", 102 .type = OPTION_FLAG, 103 .opt.flag = &pkcs7_config.noout, 104 }, 105 { 106 .name = "out", 107 .argname = "file", 108 .desc = "Output file (default stdout)", 109 .type = OPTION_ARG, 110 .opt.arg = &pkcs7_config.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 = &pkcs7_config.outformat, 118 }, 119 { 120 .name = "print", 121 .desc = "Output ASN.1 representation of PKCS#7 structure", 122 .type = OPTION_FLAG, 123 .opt.flag = &pkcs7_config.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 = &pkcs7_config.print_certs, 130 }, 131 { 132 .name = "text", 133 .desc = "Print out full certificate details", 134 .type = OPTION_FLAG, 135 .opt.flag = &pkcs7_config.text, 136 }, 137 { NULL }, 138 }; 139 140 static void 141 pkcs7_usage() 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 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(&pkcs7_config, 0, sizeof(pkcs7_config)); 163 164 pkcs7_config.informat = FORMAT_PEM; 165 pkcs7_config.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 (pkcs7_config.infile == NULL) 179 BIO_set_fp(in, stdin, BIO_NOCLOSE); 180 else { 181 if (BIO_read_filename(in, pkcs7_config.infile) <= 0) { 182 perror(pkcs7_config.infile); 183 goto end; 184 } 185 } 186 187 if (pkcs7_config.informat == FORMAT_ASN1) 188 p7 = d2i_PKCS7_bio(in, NULL); 189 else if (pkcs7_config.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 (pkcs7_config.outfile == NULL) { 201 BIO_set_fp(out, stdout, BIO_NOCLOSE); 202 } else { 203 if (BIO_write_filename(out, pkcs7_config.outfile) <= 0) { 204 perror(pkcs7_config.outfile); 205 goto end; 206 } 207 } 208 209 if (pkcs7_config.p7_print) 210 PKCS7_print_ctx(out, p7, 0, NULL); 211 212 if (pkcs7_config.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 certs = p7->d.sign->cert; 220 crls = p7->d.sign->crl; 221 break; 222 case NID_pkcs7_signedAndEnveloped: 223 certs = p7->d.signed_and_enveloped->cert; 224 crls = p7->d.signed_and_enveloped->crl; 225 break; 226 default: 227 break; 228 } 229 230 if (certs != NULL) { 231 X509 *x; 232 233 for (i = 0; i < sk_X509_num(certs); i++) { 234 x = sk_X509_value(certs, i); 235 if (pkcs7_config.text) 236 X509_print(out, x); 237 else 238 dump_cert_text(out, x); 239 240 if (!pkcs7_config.noout) 241 PEM_write_bio_X509(out, x); 242 BIO_puts(out, "\n"); 243 } 244 } 245 if (crls != NULL) { 246 X509_CRL *crl; 247 248 for (i = 0; i < sk_X509_CRL_num(crls); i++) { 249 crl = sk_X509_CRL_value(crls, i); 250 251 X509_CRL_print(out, crl); 252 253 if (!pkcs7_config.noout) 254 PEM_write_bio_X509_CRL(out, crl); 255 BIO_puts(out, "\n"); 256 } 257 } 258 ret = 0; 259 goto end; 260 } 261 if (!pkcs7_config.noout) { 262 if (pkcs7_config.outformat == FORMAT_ASN1) 263 i = i2d_PKCS7_bio(out, p7); 264 else if (pkcs7_config.outformat == FORMAT_PEM) 265 i = PEM_write_bio_PKCS7(out, p7); 266 else { 267 BIO_printf(bio_err, "bad output format specified for outfile\n"); 268 goto end; 269 } 270 271 if (!i) { 272 BIO_printf(bio_err, "unable to write pkcs7 object\n"); 273 ERR_print_errors(bio_err); 274 goto end; 275 } 276 } 277 ret = 0; 278 end: 279 if (p7 != NULL) 280 PKCS7_free(p7); 281 if (in != NULL) 282 BIO_free(in); 283 if (out != NULL) 284 BIO_free_all(out); 285 286 return (ret); 287 } 288