crl2p7.c revision 238405
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/* 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 <stdio.h> 64#include <string.h> 65#include <sys/types.h> 66#include "apps.h" 67#include <openssl/err.h> 68#include <openssl/evp.h> 69#include <openssl/x509.h> 70#include <openssl/pkcs7.h> 71#include <openssl/pem.h> 72#include <openssl/objects.h> 73 74static int add_certs_from_file(STACK_OF(X509) *stack, char *certfile); 75#undef PROG 76#define PROG crl2pkcs7_main 77 78/* -inform arg - input format - default PEM (DER or PEM) 79 * -outform arg - output format - default PEM 80 * -in arg - input file - default stdin 81 * -out arg - output file - default stdout 82 */ 83 84int MAIN(int, char **); 85 86int MAIN(int argc, char **argv) 87 { 88 int i,badops=0; 89 BIO *in=NULL,*out=NULL; 90 int informat,outformat; 91 char *infile,*outfile,*prog,*certfile; 92 PKCS7 *p7 = NULL; 93 PKCS7_SIGNED *p7s = NULL; 94 X509_CRL *crl=NULL; 95 STACK_OF(OPENSSL_STRING) *certflst=NULL; 96 STACK_OF(X509_CRL) *crl_stack=NULL; 97 STACK_OF(X509) *cert_stack=NULL; 98 int ret=1,nocrl=0; 99 100 apps_startup(); 101 102 if (bio_err == NULL) 103 if ((bio_err=BIO_new(BIO_s_file())) != NULL) 104 BIO_set_fp(bio_err,stderr,BIO_NOCLOSE|BIO_FP_TEXT); 105 106 infile=NULL; 107 outfile=NULL; 108 informat=FORMAT_PEM; 109 outformat=FORMAT_PEM; 110 111 prog=argv[0]; 112 argc--; 113 argv++; 114 while (argc >= 1) 115 { 116 if (strcmp(*argv,"-inform") == 0) 117 { 118 if (--argc < 1) goto bad; 119 informat=str2fmt(*(++argv)); 120 } 121 else if (strcmp(*argv,"-outform") == 0) 122 { 123 if (--argc < 1) goto bad; 124 outformat=str2fmt(*(++argv)); 125 } 126 else if (strcmp(*argv,"-in") == 0) 127 { 128 if (--argc < 1) goto bad; 129 infile= *(++argv); 130 } 131 else if (strcmp(*argv,"-nocrl") == 0) 132 { 133 nocrl=1; 134 } 135 else if (strcmp(*argv,"-out") == 0) 136 { 137 if (--argc < 1) goto bad; 138 outfile= *(++argv); 139 } 140 else if (strcmp(*argv,"-certfile") == 0) 141 { 142 if (--argc < 1) goto bad; 143 if(!certflst) certflst = sk_OPENSSL_STRING_new_null(); 144 sk_OPENSSL_STRING_push(certflst,*(++argv)); 145 } 146 else 147 { 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 { 158bad: 159 BIO_printf(bio_err,"%s [options] <infile >outfile\n",prog); 160 BIO_printf(bio_err,"where options are\n"); 161 BIO_printf(bio_err," -inform arg input format - DER or PEM\n"); 162 BIO_printf(bio_err," -outform arg output format - DER or PEM\n"); 163 BIO_printf(bio_err," -in arg input file\n"); 164 BIO_printf(bio_err," -out arg output file\n"); 165 BIO_printf(bio_err," -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," -nocrl no crl to load, just certs from '-certfile'\n"); 168 ret = 1; 169 goto end; 170 } 171 172 ERR_load_crypto_strings(); 173 174 in=BIO_new(BIO_s_file()); 175 out=BIO_new(BIO_s_file()); 176 if ((in == NULL) || (out == NULL)) 177 { 178 ERR_print_errors(bio_err); 179 goto end; 180 } 181 182 if (!nocrl) 183 { 184 if (infile == NULL) 185 BIO_set_fp(in,stdin,BIO_NOCLOSE); 186 else 187 { 188 if (BIO_read_filename(in,infile) <= 0) 189 { 190 perror(infile); 191 goto end; 192 } 193 } 194 195 if (informat == FORMAT_ASN1) 196 crl=d2i_X509_CRL_bio(in,NULL); 197 else if (informat == FORMAT_PEM) 198 crl=PEM_read_bio_X509_CRL(in,NULL,NULL,NULL); 199 else { 200 BIO_printf(bio_err,"bad input format specified for input crl\n"); 201 goto end; 202 } 203 if (crl == NULL) 204 { 205 BIO_printf(bio_err,"unable to load CRL\n"); 206 ERR_print_errors(bio_err); 207 goto end; 208 } 209 } 210 211 if ((p7=PKCS7_new()) == NULL) goto end; 212 if ((p7s=PKCS7_SIGNED_new()) == NULL) goto end; 213 p7->type=OBJ_nid2obj(NID_pkcs7_signed); 214 p7->d.sign=p7s; 215 p7s->contents->type=OBJ_nid2obj(NID_pkcs7_data); 216 217 if (!ASN1_INTEGER_set(p7s->version,1)) goto end; 218 if ((crl_stack=sk_X509_CRL_new_null()) == NULL) goto end; 219 p7s->crl=crl_stack; 220 if (crl != NULL) 221 { 222 sk_X509_CRL_push(crl_stack,crl); 223 crl=NULL; /* now part of p7 for OPENSSL_freeing */ 224 } 225 226 if ((cert_stack=sk_X509_new_null()) == NULL) goto end; 227 p7s->cert=cert_stack; 228 229 if(certflst) for(i = 0; i < sk_OPENSSL_STRING_num(certflst); i++) { 230 certfile = sk_OPENSSL_STRING_value(certflst, i); 231 if (add_certs_from_file(cert_stack,certfile) < 0) 232 { 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 { 243 BIO_set_fp(out,stdout,BIO_NOCLOSE); 244#ifdef OPENSSL_SYS_VMS 245 { 246 BIO *tmpbio = BIO_new(BIO_f_linebuffer()); 247 out = BIO_push(tmpbio, out); 248 } 249#endif 250 } 251 else 252 { 253 if (BIO_write_filename(out,outfile) <= 0) 254 { 255 perror(outfile); 256 goto end; 257 } 258 } 259 260 if (outformat == FORMAT_ASN1) 261 i=i2d_PKCS7_bio(out,p7); 262 else if (outformat == FORMAT_PEM) 263 i=PEM_write_bio_PKCS7(out,p7); 264 else { 265 BIO_printf(bio_err,"bad output format specified for outfile\n"); 266 goto end; 267 } 268 if (!i) 269 { 270 BIO_printf(bio_err,"unable to write pkcs7 object\n"); 271 ERR_print_errors(bio_err); 272 goto end; 273 } 274 ret=0; 275end: 276 if (in != NULL) BIO_free(in); 277 if (out != NULL) BIO_free_all(out); 278 if (p7 != NULL) PKCS7_free(p7); 279 if (crl != NULL) X509_CRL_free(crl); 280 281 apps_shutdown(); 282 OPENSSL_EXIT(ret); 283 } 284 285/* 286 *---------------------------------------------------------------------- 287 * int add_certs_from_file 288 * 289 * Read a list of certificates to be checked from a file. 290 * 291 * Results: 292 * number of certs added if successful, -1 if not. 293 *---------------------------------------------------------------------- 294 */ 295static int add_certs_from_file(STACK_OF(X509) *stack, char *certfile) 296 { 297 BIO *in=NULL; 298 int count=0; 299 int ret= -1; 300 STACK_OF(X509_INFO) *sk=NULL; 301 X509_INFO *xi; 302 303 in=BIO_new(BIO_s_file()); 304 if ((in == NULL) || (BIO_read_filename(in,certfile) <= 0)) 305 { 306 BIO_printf(bio_err,"error opening the file, %s\n",certfile); 307 goto end; 308 } 309 310 /* This loads from a file, a stack of x509/crl/pkey sets */ 311 sk=PEM_X509_INFO_read_bio(in,NULL,NULL,NULL); 312 if (sk == NULL) { 313 BIO_printf(bio_err,"error reading the file, %s\n",certfile); 314 goto end; 315 } 316 317 /* scan over it and pull out the CRL's */ 318 while (sk_X509_INFO_num(sk)) 319 { 320 xi=sk_X509_INFO_shift(sk); 321 if (xi->x509 != NULL) 322 { 323 sk_X509_push(stack,xi->x509); 324 xi->x509=NULL; 325 count++; 326 } 327 X509_INFO_free(xi); 328 } 329 330 ret=count; 331end: 332 /* never need to OPENSSL_free x */ 333 if (in != NULL) BIO_free(in); 334 if (sk != NULL) sk_X509_INFO_free(sk); 335 return(ret); 336 } 337 338