1/* apps/crl2p7.c */ 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/* 60 * This was written by Gordon Chaffee <chaffee@plateau.cs.berkeley.edu> and 61 * donated 'to the cause' along with lots and lots of other fixes to the 62 * library. 63 */ 64 65#include <stdio.h> 66#include <string.h> 67#include <sys/types.h> 68#include "apps.h" 69#include <openssl/err.h> 70#include <openssl/evp.h> 71#include <openssl/x509.h> 72#include <openssl/pkcs7.h> 73#include <openssl/pem.h> 74#include <openssl/objects.h> 75 76static int add_certs_from_file(STACK_OF(X509) *stack, char *certfile); 77#undef PROG 78#define PROG crl2pkcs7_main 79 80/*- 81 * -inform arg - input format - default PEM (DER or PEM) 82 * -outform arg - output format - default PEM 83 * -in arg - input file - default stdin 84 * -out arg - output file - default stdout 85 */ 86 87int MAIN(int, char **); 88 89int MAIN(int argc, char **argv) 90{ 91 int i, badops = 0; 92 BIO *in = NULL, *out = NULL; 93 int informat, outformat; 94 char *infile, *outfile, *prog, *certfile; 95 PKCS7 *p7 = NULL; 96 PKCS7_SIGNED *p7s = NULL; 97 X509_CRL *crl = NULL; 98 STACK_OF(OPENSSL_STRING) *certflst = NULL; 99 STACK_OF(X509_CRL) *crl_stack = NULL; 100 STACK_OF(X509) *cert_stack = NULL; 101 int ret = 1, nocrl = 0; 102 103 apps_startup(); 104 105 if (bio_err == NULL) 106 if ((bio_err = BIO_new(BIO_s_file())) != NULL) 107 BIO_set_fp(bio_err, stderr, BIO_NOCLOSE | BIO_FP_TEXT); 108 109 infile = NULL; 110 outfile = NULL; 111 informat = FORMAT_PEM; 112 outformat = FORMAT_PEM; 113 114 prog = argv[0]; 115 argc--; 116 argv++; 117 while (argc >= 1) { 118 if (strcmp(*argv, "-inform") == 0) { 119 if (--argc < 1) 120 goto bad; 121 informat = str2fmt(*(++argv)); 122 } else if (strcmp(*argv, "-outform") == 0) { 123 if (--argc < 1) 124 goto bad; 125 outformat = str2fmt(*(++argv)); 126 } else if (strcmp(*argv, "-in") == 0) { 127 if (--argc < 1) 128 goto bad; 129 infile = *(++argv); 130 } else if (strcmp(*argv, "-nocrl") == 0) { 131 nocrl = 1; 132 } else if (strcmp(*argv, "-out") == 0) { 133 if (--argc < 1) 134 goto bad; 135 outfile = *(++argv); 136 } else if (strcmp(*argv, "-certfile") == 0) { 137 if (--argc < 1) 138 goto bad; 139 if (!certflst) 140 certflst = sk_OPENSSL_STRING_new_null(); 141 if (!certflst) 142 goto end; 143 if (!sk_OPENSSL_STRING_push(certflst, *(++argv))) { 144 sk_OPENSSL_STRING_free(certflst); 145 goto end; 146 } 147 } else { 148 BIO_printf(bio_err, "unknown option %s\n", *argv); 149 badops = 1; 150 break; 151 } 152 argc--; 153 argv++; 154 } 155 156 if (badops) { 157 bad: 158 BIO_printf(bio_err, "%s [options] <infile >outfile\n", prog); 159 BIO_printf(bio_err, "where options are\n"); 160 BIO_printf(bio_err, " -inform arg input format - DER or PEM\n"); 161 BIO_printf(bio_err, " -outform arg output format - DER or PEM\n"); 162 BIO_printf(bio_err, " -in arg input file\n"); 163 BIO_printf(bio_err, " -out arg output file\n"); 164 BIO_printf(bio_err, 165 " -certfile arg certificates file of chain to a trusted CA\n"); 166 BIO_printf(bio_err, " (can be used more than once)\n"); 167 BIO_printf(bio_err, 168 " -nocrl no crl to load, just certs from '-certfile'\n"); 169 ret = 1; 170 goto end; 171 } 172 173 ERR_load_crypto_strings(); 174 175 in = BIO_new(BIO_s_file()); 176 out = BIO_new(BIO_s_file()); 177 if ((in == NULL) || (out == NULL)) { 178 ERR_print_errors(bio_err); 179 goto end; 180 } 181 182 if (!nocrl) { 183 if (infile == NULL) 184 BIO_set_fp(in, stdin, BIO_NOCLOSE); 185 else { 186 if (BIO_read_filename(in, infile) <= 0) { 187 perror(infile); 188 goto end; 189 } 190 } 191 192 if (informat == FORMAT_ASN1) 193 crl = d2i_X509_CRL_bio(in, NULL); 194 else if (informat == FORMAT_PEM) 195 crl = PEM_read_bio_X509_CRL(in, NULL, NULL, NULL); 196 else { 197 BIO_printf(bio_err, "bad input format specified for input crl\n"); 198 goto end; 199 } 200 if (crl == NULL) { 201 BIO_printf(bio_err, "unable to load CRL\n"); 202 ERR_print_errors(bio_err); 203 goto end; 204 } 205 } 206 207 if ((p7 = PKCS7_new()) == NULL) 208 goto end; 209 if ((p7s = PKCS7_SIGNED_new()) == NULL) 210 goto end; 211 p7->type = OBJ_nid2obj(NID_pkcs7_signed); 212 p7->d.sign = p7s; 213 p7s->contents->type = OBJ_nid2obj(NID_pkcs7_data); 214 215 if (!ASN1_INTEGER_set(p7s->version, 1)) 216 goto end; 217 if ((crl_stack = sk_X509_CRL_new_null()) == NULL) 218 goto end; 219 p7s->crl = crl_stack; 220 if (crl != NULL) { 221 sk_X509_CRL_push(crl_stack, crl); 222 crl = NULL; /* now part of p7 for OPENSSL_freeing */ 223 } 224 225 if ((cert_stack = sk_X509_new_null()) == NULL) 226 goto end; 227 p7s->cert = cert_stack; 228 229 if (certflst) 230 for (i = 0; i < sk_OPENSSL_STRING_num(certflst); i++) { 231 certfile = sk_OPENSSL_STRING_value(certflst, i); 232 if (add_certs_from_file(cert_stack, certfile) < 0) { 233 BIO_printf(bio_err, "error loading certificates\n"); 234 ERR_print_errors(bio_err); 235 goto end; 236 } 237 } 238 239 sk_OPENSSL_STRING_free(certflst); 240 241 if (outfile == NULL) { 242 BIO_set_fp(out, stdout, BIO_NOCLOSE); 243#ifdef OPENSSL_SYS_VMS 244 { 245 BIO *tmpbio = BIO_new(BIO_f_linebuffer()); 246 out = BIO_push(tmpbio, out); 247 } 248#endif 249 } else { 250 if (BIO_write_filename(out, outfile) <= 0) { 251 perror(outfile); 252 goto end; 253 } 254 } 255 256 if (outformat == FORMAT_ASN1) 257 i = i2d_PKCS7_bio(out, p7); 258 else if (outformat == FORMAT_PEM) 259 i = PEM_write_bio_PKCS7(out, p7); 260 else { 261 BIO_printf(bio_err, "bad output format specified for outfile\n"); 262 goto end; 263 } 264 if (!i) { 265 BIO_printf(bio_err, "unable to write pkcs7 object\n"); 266 ERR_print_errors(bio_err); 267 goto end; 268 } 269 ret = 0; 270 end: 271 if (in != NULL) 272 BIO_free(in); 273 if (out != NULL) 274 BIO_free_all(out); 275 if (p7 != NULL) 276 PKCS7_free(p7); 277 if (crl != NULL) 278 X509_CRL_free(crl); 279 280 apps_shutdown(); 281 OPENSSL_EXIT(ret); 282} 283 284/*- 285 *---------------------------------------------------------------------- 286 * int add_certs_from_file 287 * 288 * Read a list of certificates to be checked from a file. 289 * 290 * Results: 291 * number of certs added if successful, -1 if not. 292 *---------------------------------------------------------------------- 293 */ 294static int 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 } 307 308 /* This loads from a file, a stack of x509/crl/pkey sets */ 309 sk = PEM_X509_INFO_read_bio(in, NULL, NULL, NULL); 310 if (sk == NULL) { 311 BIO_printf(bio_err, "error reading the file, %s\n", certfile); 312 goto end; 313 } 314 315 /* scan over it and pull out the CRL's */ 316 while (sk_X509_INFO_num(sk)) { 317 xi = sk_X509_INFO_shift(sk); 318 if (xi->x509 != NULL) { 319 sk_X509_push(stack, xi->x509); 320 xi->x509 = NULL; 321 count++; 322 } 323 X509_INFO_free(xi); 324 } 325 326 ret = count; 327 end: 328 /* never need to OPENSSL_free x */ 329 if (in != NULL) 330 BIO_free(in); 331 if (sk != NULL) 332 sk_X509_INFO_free(sk); 333 return (ret); 334} 335