1 /* $OpenBSD: crl2p7.c,v 1.2 2014/08/28 14:23:52 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 /* -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 85 int crl2pkcs7_main(int, char **); 86 87 int 88 crl2pkcs7_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) { 145 bad: 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 } 158 159 in = BIO_new(BIO_s_file()); 160 out = BIO_new(BIO_s_file()); 161 if ((in == NULL) || (out == NULL)) { 162 ERR_print_errors(bio_err); 163 goto end; 164 } 165 if (!nocrl) { 166 if (infile == NULL) 167 BIO_set_fp(in, stdin, BIO_NOCLOSE); 168 else { 169 if (BIO_read_filename(in, infile) <= 0) { 170 perror(infile); 171 goto end; 172 } 173 } 174 175 if (informat == FORMAT_ASN1) 176 crl = d2i_X509_CRL_bio(in, NULL); 177 else if (informat == FORMAT_PEM) 178 crl = PEM_read_bio_X509_CRL(in, NULL, NULL, NULL); 179 else { 180 BIO_printf(bio_err, 181 "bad input format specified for input crl\n"); 182 goto end; 183 } 184 if (crl == NULL) { 185 BIO_printf(bio_err, "unable to load CRL\n"); 186 ERR_print_errors(bio_err); 187 goto end; 188 } 189 } 190 if ((p7 = PKCS7_new()) == NULL) 191 goto end; 192 if ((p7s = PKCS7_SIGNED_new()) == NULL) 193 goto end; 194 p7->type = OBJ_nid2obj(NID_pkcs7_signed); 195 p7->d.sign = p7s; 196 p7s->contents->type = OBJ_nid2obj(NID_pkcs7_data); 197 198 if (!ASN1_INTEGER_set(p7s->version, 1)) 199 goto end; 200 if ((crl_stack = sk_X509_CRL_new_null()) == NULL) 201 goto end; 202 p7s->crl = crl_stack; 203 if (crl != NULL) { 204 sk_X509_CRL_push(crl_stack, crl); 205 crl = NULL; /* now part of p7 for freeing */ 206 } 207 if ((cert_stack = sk_X509_new_null()) == NULL) 208 goto end; 209 p7s->cert = cert_stack; 210 211 if (certflst) 212 for (i = 0; i < sk_OPENSSL_STRING_num(certflst); i++) { 213 certfile = sk_OPENSSL_STRING_value(certflst, i); 214 if (add_certs_from_file(cert_stack, certfile) < 0) { 215 BIO_printf(bio_err, 216 "error loading certificates\n"); 217 ERR_print_errors(bio_err); 218 goto end; 219 } 220 } 221 222 sk_OPENSSL_STRING_free(certflst); 223 224 if (outfile == NULL) { 225 BIO_set_fp(out, stdout, BIO_NOCLOSE); 226 } else { 227 if (BIO_write_filename(out, outfile) <= 0) { 228 perror(outfile); 229 goto end; 230 } 231 } 232 233 if (outformat == FORMAT_ASN1) 234 i = i2d_PKCS7_bio(out, p7); 235 else if (outformat == FORMAT_PEM) 236 i = PEM_write_bio_PKCS7(out, p7); 237 else { 238 BIO_printf(bio_err, 239 "bad output format specified for outfile\n"); 240 goto end; 241 } 242 if (!i) { 243 BIO_printf(bio_err, "unable to write pkcs7 object\n"); 244 ERR_print_errors(bio_err); 245 goto end; 246 } 247 ret = 0; 248 249 end: 250 if (in != NULL) 251 BIO_free(in); 252 if (out != NULL) 253 BIO_free_all(out); 254 if (p7 != NULL) 255 PKCS7_free(p7); 256 if (crl != NULL) 257 X509_CRL_free(crl); 258 259 260 return (ret); 261 } 262 263 /* 264 *---------------------------------------------------------------------- 265 * int add_certs_from_file 266 * 267 * Read a list of certificates to be checked from a file. 268 * 269 * Results: 270 * number of certs added if successful, -1 if not. 271 *---------------------------------------------------------------------- 272 */ 273 static int 274 add_certs_from_file(STACK_OF(X509) * stack, char *certfile) 275 { 276 BIO *in = NULL; 277 int count = 0; 278 int ret = -1; 279 STACK_OF(X509_INFO) * sk = NULL; 280 X509_INFO *xi; 281 282 in = BIO_new(BIO_s_file()); 283 if ((in == NULL) || (BIO_read_filename(in, certfile) <= 0)) { 284 BIO_printf(bio_err, "error opening the file, %s\n", certfile); 285 goto end; 286 } 287 /* This loads from a file, a stack of x509/crl/pkey sets */ 288 sk = PEM_X509_INFO_read_bio(in, NULL, NULL, NULL); 289 if (sk == NULL) { 290 BIO_printf(bio_err, "error reading the file, %s\n", certfile); 291 goto end; 292 } 293 /* scan over it and pull out the CRL's */ 294 while (sk_X509_INFO_num(sk)) { 295 xi = sk_X509_INFO_shift(sk); 296 if (xi->x509 != NULL) { 297 sk_X509_push(stack, xi->x509); 298 xi->x509 = NULL; 299 count++; 300 } 301 X509_INFO_free(xi); 302 } 303 304 ret = count; 305 306 end: 307 /* never need to free x */ 308 if (in != NULL) 309 BIO_free(in); 310 if (sk != NULL) 311 sk_X509_INFO_free(sk); 312 return (ret); 313 } 314