crl2p7.c revision 279264
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 if (!certflst) 145 goto end; 146 if (!sk_OPENSSL_STRING_push(certflst,*(++argv))) 147 { 148 sk_OPENSSL_STRING_free(certflst); 149 goto end; 150 } 151 } 152 else 153 { 154 BIO_printf(bio_err,"unknown option %s\n",*argv); 155 badops=1; 156 break; 157 } 158 argc--; 159 argv++; 160 } 161 162 if (badops) 163 { 164bad: 165 BIO_printf(bio_err,"%s [options] <infile >outfile\n",prog); 166 BIO_printf(bio_err,"where options are\n"); 167 BIO_printf(bio_err," -inform arg input format - DER or PEM\n"); 168 BIO_printf(bio_err," -outform arg output format - DER or PEM\n"); 169 BIO_printf(bio_err," -in arg input file\n"); 170 BIO_printf(bio_err," -out arg output file\n"); 171 BIO_printf(bio_err," -certfile arg certificates file of chain to a trusted CA\n"); 172 BIO_printf(bio_err," (can be used more than once)\n"); 173 BIO_printf(bio_err," -nocrl no crl to load, just certs from '-certfile'\n"); 174 ret = 1; 175 goto end; 176 } 177 178 ERR_load_crypto_strings(); 179 180 in=BIO_new(BIO_s_file()); 181 out=BIO_new(BIO_s_file()); 182 if ((in == NULL) || (out == NULL)) 183 { 184 ERR_print_errors(bio_err); 185 goto end; 186 } 187 188 if (!nocrl) 189 { 190 if (infile == NULL) 191 BIO_set_fp(in,stdin,BIO_NOCLOSE); 192 else 193 { 194 if (BIO_read_filename(in,infile) <= 0) 195 { 196 perror(infile); 197 goto end; 198 } 199 } 200 201 if (informat == FORMAT_ASN1) 202 crl=d2i_X509_CRL_bio(in,NULL); 203 else if (informat == FORMAT_PEM) 204 crl=PEM_read_bio_X509_CRL(in,NULL,NULL,NULL); 205 else { 206 BIO_printf(bio_err,"bad input format specified for input crl\n"); 207 goto end; 208 } 209 if (crl == NULL) 210 { 211 BIO_printf(bio_err,"unable to load CRL\n"); 212 ERR_print_errors(bio_err); 213 goto end; 214 } 215 } 216 217 if ((p7=PKCS7_new()) == NULL) goto end; 218 if ((p7s=PKCS7_SIGNED_new()) == NULL) goto end; 219 p7->type=OBJ_nid2obj(NID_pkcs7_signed); 220 p7->d.sign=p7s; 221 p7s->contents->type=OBJ_nid2obj(NID_pkcs7_data); 222 223 if (!ASN1_INTEGER_set(p7s->version,1)) goto end; 224 if ((crl_stack=sk_X509_CRL_new_null()) == NULL) goto end; 225 p7s->crl=crl_stack; 226 if (crl != NULL) 227 { 228 sk_X509_CRL_push(crl_stack,crl); 229 crl=NULL; /* now part of p7 for OPENSSL_freeing */ 230 } 231 232 if ((cert_stack=sk_X509_new_null()) == NULL) goto end; 233 p7s->cert=cert_stack; 234 235 if(certflst) for(i = 0; i < sk_OPENSSL_STRING_num(certflst); i++) { 236 certfile = sk_OPENSSL_STRING_value(certflst, i); 237 if (add_certs_from_file(cert_stack,certfile) < 0) 238 { 239 BIO_printf(bio_err, "error loading certificates\n"); 240 ERR_print_errors(bio_err); 241 goto end; 242 } 243 } 244 245 sk_OPENSSL_STRING_free(certflst); 246 247 if (outfile == NULL) 248 { 249 BIO_set_fp(out,stdout,BIO_NOCLOSE); 250#ifdef OPENSSL_SYS_VMS 251 { 252 BIO *tmpbio = BIO_new(BIO_f_linebuffer()); 253 out = BIO_push(tmpbio, out); 254 } 255#endif 256 } 257 else 258 { 259 if (BIO_write_filename(out,outfile) <= 0) 260 { 261 perror(outfile); 262 goto end; 263 } 264 } 265 266 if (outformat == FORMAT_ASN1) 267 i=i2d_PKCS7_bio(out,p7); 268 else if (outformat == FORMAT_PEM) 269 i=PEM_write_bio_PKCS7(out,p7); 270 else { 271 BIO_printf(bio_err,"bad output format specified for outfile\n"); 272 goto end; 273 } 274 if (!i) 275 { 276 BIO_printf(bio_err,"unable to write pkcs7 object\n"); 277 ERR_print_errors(bio_err); 278 goto end; 279 } 280 ret=0; 281end: 282 if (in != NULL) BIO_free(in); 283 if (out != NULL) BIO_free_all(out); 284 if (p7 != NULL) PKCS7_free(p7); 285 if (crl != NULL) X509_CRL_free(crl); 286 287 apps_shutdown(); 288 OPENSSL_EXIT(ret); 289 } 290 291/* 292 *---------------------------------------------------------------------- 293 * int add_certs_from_file 294 * 295 * Read a list of certificates to be checked from a file. 296 * 297 * Results: 298 * number of certs added if successful, -1 if not. 299 *---------------------------------------------------------------------- 300 */ 301static int add_certs_from_file(STACK_OF(X509) *stack, char *certfile) 302 { 303 BIO *in=NULL; 304 int count=0; 305 int ret= -1; 306 STACK_OF(X509_INFO) *sk=NULL; 307 X509_INFO *xi; 308 309 in=BIO_new(BIO_s_file()); 310 if ((in == NULL) || (BIO_read_filename(in,certfile) <= 0)) 311 { 312 BIO_printf(bio_err,"error opening the file, %s\n",certfile); 313 goto end; 314 } 315 316 /* This loads from a file, a stack of x509/crl/pkey sets */ 317 sk=PEM_X509_INFO_read_bio(in,NULL,NULL,NULL); 318 if (sk == NULL) { 319 BIO_printf(bio_err,"error reading the file, %s\n",certfile); 320 goto end; 321 } 322 323 /* scan over it and pull out the CRL's */ 324 while (sk_X509_INFO_num(sk)) 325 { 326 xi=sk_X509_INFO_shift(sk); 327 if (xi->x509 != NULL) 328 { 329 sk_X509_push(stack,xi->x509); 330 xi->x509=NULL; 331 count++; 332 } 333 X509_INFO_free(xi); 334 } 335 336 ret=count; 337end: 338 /* never need to OPENSSL_free x */ 339 if (in != NULL) BIO_free(in); 340 if (sk != NULL) sk_X509_INFO_free(sk); 341 return(ret); 342 } 343 344