1 /* $OpenBSD: crl2p7.c,v 1.8 2018/02/07 05:47:55 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 77 static int add_certs_from_file(STACK_OF(X509) * stack, char *certfile); 78 79 static struct { 80 STACK_OF(OPENSSL_STRING) *certflst; 81 char *infile; 82 int informat; 83 int nocrl; 84 char *outfile; 85 int outformat; 86 } crl2p7_config; 87 88 static int 89 crl2p7_opt_certfile(char *arg) 90 { 91 if (crl2p7_config.certflst == NULL) 92 crl2p7_config.certflst = sk_OPENSSL_STRING_new_null(); 93 if (crl2p7_config.certflst == NULL) { 94 fprintf(stderr, "out of memory\n"); 95 return (1); 96 } 97 if (!sk_OPENSSL_STRING_push(crl2p7_config.certflst, arg)) { 98 fprintf(stderr, "out of memory\n"); 99 return (1); 100 } 101 102 return (0); 103 } 104 105 static struct option crl2p7_options[] = { 106 { 107 .name = "certfile", 108 .argname = "file", 109 .desc = "Chain of PEM certificates to a trusted CA", 110 .type = OPTION_ARG_FUNC, 111 .opt.argfunc = crl2p7_opt_certfile, 112 }, 113 { 114 .name = "in", 115 .argname = "file", 116 .desc = "Input file (default stdin)", 117 .type = OPTION_ARG, 118 .opt.arg = &crl2p7_config.infile, 119 }, 120 { 121 .name = "inform", 122 .argname = "format", 123 .desc = "Input format (DER or PEM (default))", 124 .type = OPTION_ARG_FORMAT, 125 .opt.value = &crl2p7_config.informat, 126 }, 127 { 128 .name = "nocrl", 129 .desc = "Do not read CRL from input or include CRL in output", 130 .type = OPTION_FLAG, 131 .opt.flag = &crl2p7_config.nocrl, 132 }, 133 { 134 .name = "out", 135 .argname = "file", 136 .desc = "Output file (default stdout)", 137 .type = OPTION_ARG, 138 .opt.arg = &crl2p7_config.outfile, 139 }, 140 { 141 .name = "outform", 142 .argname = "format", 143 .desc = "Output format (DER or PEM (default))", 144 .type = OPTION_ARG_FORMAT, 145 .opt.value = &crl2p7_config.outformat, 146 }, 147 { NULL }, 148 }; 149 150 static void 151 crl2p7_usage(void) 152 { 153 fprintf(stderr, 154 "usage: crl2p7 [-certfile file] [-in file] [-inform DER | PEM]\n" 155 " [-nocrl] [-out file] [-outform DER | PEM]\n\n"); 156 options_usage(crl2p7_options); 157 } 158 159 int 160 crl2pkcs7_main(int argc, char **argv) 161 { 162 int i; 163 BIO *in = NULL, *out = NULL; 164 char *certfile; 165 PKCS7 *p7 = NULL; 166 PKCS7_SIGNED *p7s = NULL; 167 X509_CRL *crl = NULL; 168 STACK_OF(X509_CRL) *crl_stack = NULL; 169 STACK_OF(X509) *cert_stack = NULL; 170 int ret = 1; 171 172 if (single_execution) { 173 if (pledge("stdio cpath wpath rpath", NULL) == -1) { 174 perror("pledge"); 175 exit(1); 176 } 177 } 178 179 memset(&crl2p7_config, 0, sizeof(crl2p7_config)); 180 181 crl2p7_config.informat = FORMAT_PEM; 182 crl2p7_config.outformat = FORMAT_PEM; 183 184 if (options_parse(argc, argv, crl2p7_options, NULL, NULL) != 0) { 185 crl2p7_usage(); 186 goto end; 187 } 188 189 in = BIO_new(BIO_s_file()); 190 out = BIO_new(BIO_s_file()); 191 if (in == NULL || out == NULL) { 192 ERR_print_errors(bio_err); 193 goto end; 194 } 195 if (!crl2p7_config.nocrl) { 196 if (crl2p7_config.infile == NULL) 197 BIO_set_fp(in, stdin, BIO_NOCLOSE); 198 else { 199 if (BIO_read_filename(in, crl2p7_config.infile) <= 0) { 200 perror(crl2p7_config.infile); 201 goto end; 202 } 203 } 204 205 if (crl2p7_config.informat == FORMAT_ASN1) 206 crl = d2i_X509_CRL_bio(in, NULL); 207 else if (crl2p7_config.informat == FORMAT_PEM) 208 crl = PEM_read_bio_X509_CRL(in, NULL, NULL, NULL); 209 else { 210 BIO_printf(bio_err, 211 "bad input format specified for input crl\n"); 212 goto end; 213 } 214 if (crl == NULL) { 215 BIO_printf(bio_err, "unable to load CRL\n"); 216 ERR_print_errors(bio_err); 217 goto end; 218 } 219 } 220 if ((p7 = PKCS7_new()) == NULL) 221 goto end; 222 if ((p7s = PKCS7_SIGNED_new()) == NULL) 223 goto end; 224 p7->type = OBJ_nid2obj(NID_pkcs7_signed); 225 p7->d.sign = p7s; 226 p7s->contents->type = OBJ_nid2obj(NID_pkcs7_data); 227 228 if (!ASN1_INTEGER_set(p7s->version, 1)) 229 goto end; 230 if ((crl_stack = sk_X509_CRL_new_null()) == NULL) 231 goto end; 232 p7s->crl = crl_stack; 233 if (crl != NULL) { 234 sk_X509_CRL_push(crl_stack, crl); 235 crl = NULL; /* now part of p7 for freeing */ 236 } 237 if ((cert_stack = sk_X509_new_null()) == NULL) 238 goto end; 239 p7s->cert = cert_stack; 240 241 if (crl2p7_config.certflst) { 242 for (i = 0; i < sk_OPENSSL_STRING_num(crl2p7_config.certflst); i++) { 243 certfile = sk_OPENSSL_STRING_value(crl2p7_config.certflst, i); 244 if (add_certs_from_file(cert_stack, certfile) < 0) { 245 BIO_printf(bio_err, 246 "error loading certificates\n"); 247 ERR_print_errors(bio_err); 248 goto end; 249 } 250 } 251 } 252 253 sk_OPENSSL_STRING_free(crl2p7_config.certflst); 254 255 if (crl2p7_config.outfile == NULL) { 256 BIO_set_fp(out, stdout, BIO_NOCLOSE); 257 } else { 258 if (BIO_write_filename(out, crl2p7_config.outfile) <= 0) { 259 perror(crl2p7_config.outfile); 260 goto end; 261 } 262 } 263 264 if (crl2p7_config.outformat == FORMAT_ASN1) 265 i = i2d_PKCS7_bio(out, p7); 266 else if (crl2p7_config.outformat == FORMAT_PEM) 267 i = PEM_write_bio_PKCS7(out, p7); 268 else { 269 BIO_printf(bio_err, 270 "bad output format specified for outfile\n"); 271 goto end; 272 } 273 if (!i) { 274 BIO_printf(bio_err, "unable to write pkcs7 object\n"); 275 ERR_print_errors(bio_err); 276 goto end; 277 } 278 ret = 0; 279 280 end: 281 if (in != NULL) 282 BIO_free(in); 283 if (out != NULL) 284 BIO_free_all(out); 285 if (p7 != NULL) 286 PKCS7_free(p7); 287 if (crl != NULL) 288 X509_CRL_free(crl); 289 290 return (ret); 291 } 292 293 static int 294 add_certs_from_file(STACK_OF(X509) *stack, char *certfile) 295 { 296 BIO *in = NULL; 297 int count = 0; 298 int ret = -1; 299 STACK_OF(X509_INFO) *sk = NULL; 300 X509_INFO *xi; 301 302 in = BIO_new(BIO_s_file()); 303 if (in == NULL || BIO_read_filename(in, certfile) <= 0) { 304 BIO_printf(bio_err, "error opening the file, %s\n", certfile); 305 goto end; 306 } 307 /* This loads from a file, a stack of x509/crl/pkey sets */ 308 sk = PEM_X509_INFO_read_bio(in, NULL, NULL, NULL); 309 if (sk == NULL) { 310 BIO_printf(bio_err, "error reading the file, %s\n", certfile); 311 goto end; 312 } 313 /* scan over it and pull out the CRL's */ 314 while (sk_X509_INFO_num(sk)) { 315 xi = sk_X509_INFO_shift(sk); 316 if (xi->x509 != NULL) { 317 sk_X509_push(stack, xi->x509); 318 xi->x509 = NULL; 319 count++; 320 } 321 X509_INFO_free(xi); 322 } 323 324 ret = count; 325 326 end: 327 /* never need to free x */ 328 if (in != NULL) 329 BIO_free(in); 330 if (sk != NULL) 331 sk_X509_INFO_free(sk); 332 return (ret); 333 } 334