crl2p7.c revision 109999
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 <sys/stat.h> 67#include "apps.h" 68#include <openssl/err.h> 69#include <openssl/evp.h> 70#include <openssl/x509.h> 71#include <openssl/pkcs7.h> 72#include <openssl/pem.h> 73#include <openssl/objects.h> 74 75static int add_certs_from_file(STACK_OF(X509) *stack, char *certfile); 76#undef PROG 77#define PROG crl2pkcs7_main 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 85int MAIN(int, char **); 86 87int MAIN(int argc, char **argv) 88 { 89 int i,badops=0; 90 BIO *in=NULL,*out=NULL; 91 int informat,outformat; 92 char *infile,*outfile,*prog,*certfile; 93 PKCS7 *p7 = NULL; 94 PKCS7_SIGNED *p7s = NULL; 95 X509_CRL *crl=NULL; 96 STACK *certflst=NULL; 97 STACK_OF(X509_CRL) *crl_stack=NULL; 98 STACK_OF(X509) *cert_stack=NULL; 99 int ret=1,nocrl=0; 100 101 apps_startup(); 102 103 if (bio_err == NULL) 104 if ((bio_err=BIO_new(BIO_s_file())) != NULL) 105 BIO_set_fp(bio_err,stderr,BIO_NOCLOSE|BIO_FP_TEXT); 106 107 infile=NULL; 108 outfile=NULL; 109 informat=FORMAT_PEM; 110 outformat=FORMAT_PEM; 111 112 prog=argv[0]; 113 argc--; 114 argv++; 115 while (argc >= 1) 116 { 117 if (strcmp(*argv,"-inform") == 0) 118 { 119 if (--argc < 1) goto bad; 120 informat=str2fmt(*(++argv)); 121 } 122 else if (strcmp(*argv,"-outform") == 0) 123 { 124 if (--argc < 1) goto bad; 125 outformat=str2fmt(*(++argv)); 126 } 127 else if (strcmp(*argv,"-in") == 0) 128 { 129 if (--argc < 1) goto bad; 130 infile= *(++argv); 131 } 132 else if (strcmp(*argv,"-nocrl") == 0) 133 { 134 nocrl=1; 135 } 136 else if (strcmp(*argv,"-out") == 0) 137 { 138 if (--argc < 1) goto bad; 139 outfile= *(++argv); 140 } 141 else if (strcmp(*argv,"-certfile") == 0) 142 { 143 if (--argc < 1) goto bad; 144 if(!certflst) certflst = sk_new_null(); 145 sk_push(certflst,*(++argv)); 146 } 147 else 148 { 149 BIO_printf(bio_err,"unknown option %s\n",*argv); 150 badops=1; 151 break; 152 } 153 argc--; 154 argv++; 155 } 156 157 if (badops) 158 { 159bad: 160 BIO_printf(bio_err,"%s [options] <infile >outfile\n",prog); 161 BIO_printf(bio_err,"where options are\n"); 162 BIO_printf(bio_err," -inform arg input format - DER or PEM\n"); 163 BIO_printf(bio_err," -outform arg output format - DER or PEM\n"); 164 BIO_printf(bio_err," -in arg input file\n"); 165 BIO_printf(bio_err," -out arg output file\n"); 166 BIO_printf(bio_err," -certfile arg certificates file of chain to a trusted CA\n"); 167 BIO_printf(bio_err," (can be used more than once)\n"); 168 BIO_printf(bio_err," -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 { 179 ERR_print_errors(bio_err); 180 goto end; 181 } 182 183 if (!nocrl) 184 { 185 if (infile == NULL) 186 BIO_set_fp(in,stdin,BIO_NOCLOSE); 187 else 188 { 189 if (BIO_read_filename(in,infile) <= 0) 190 { 191 perror(infile); 192 goto end; 193 } 194 } 195 196 if (informat == FORMAT_ASN1) 197 crl=d2i_X509_CRL_bio(in,NULL); 198 else if (informat == FORMAT_PEM) 199 crl=PEM_read_bio_X509_CRL(in,NULL,NULL,NULL); 200 else { 201 BIO_printf(bio_err,"bad input format specified for input crl\n"); 202 goto end; 203 } 204 if (crl == NULL) 205 { 206 BIO_printf(bio_err,"unable to load CRL\n"); 207 ERR_print_errors(bio_err); 208 goto end; 209 } 210 } 211 212 if ((p7=PKCS7_new()) == NULL) goto end; 213 if ((p7s=PKCS7_SIGNED_new()) == NULL) goto end; 214 p7->type=OBJ_nid2obj(NID_pkcs7_signed); 215 p7->d.sign=p7s; 216 p7s->contents->type=OBJ_nid2obj(NID_pkcs7_data); 217 218 if (!ASN1_INTEGER_set(p7s->version,1)) goto end; 219 if ((crl_stack=sk_X509_CRL_new_null()) == NULL) goto end; 220 p7s->crl=crl_stack; 221 if (crl != NULL) 222 { 223 sk_X509_CRL_push(crl_stack,crl); 224 crl=NULL; /* now part of p7 for OPENSSL_freeing */ 225 } 226 227 if ((cert_stack=sk_X509_new_null()) == NULL) goto end; 228 p7s->cert=cert_stack; 229 230 if(certflst) for(i = 0; i < sk_num(certflst); i++) { 231 certfile = sk_value(certflst, i); 232 if (add_certs_from_file(cert_stack,certfile) < 0) 233 { 234 BIO_printf(bio_err, "error loading certificates\n"); 235 ERR_print_errors(bio_err); 236 goto end; 237 } 238 } 239 240 sk_free(certflst); 241 242 if (outfile == NULL) 243 { 244 BIO_set_fp(out,stdout,BIO_NOCLOSE); 245#ifdef OPENSSL_SYS_VMS 246 { 247 BIO *tmpbio = BIO_new(BIO_f_linebuffer()); 248 out = BIO_push(tmpbio, out); 249 } 250#endif 251 } 252 else 253 { 254 if (BIO_write_filename(out,outfile) <= 0) 255 { 256 perror(outfile); 257 goto end; 258 } 259 } 260 261 if (outformat == FORMAT_ASN1) 262 i=i2d_PKCS7_bio(out,p7); 263 else if (outformat == FORMAT_PEM) 264 i=PEM_write_bio_PKCS7(out,p7); 265 else { 266 BIO_printf(bio_err,"bad output format specified for outfile\n"); 267 goto end; 268 } 269 if (!i) 270 { 271 BIO_printf(bio_err,"unable to write pkcs7 object\n"); 272 ERR_print_errors(bio_err); 273 goto end; 274 } 275 ret=0; 276end: 277 if (in != NULL) BIO_free(in); 278 if (out != NULL) BIO_free_all(out); 279 if (p7 != NULL) PKCS7_free(p7); 280 if (crl != NULL) X509_CRL_free(crl); 281 282 apps_shutdown(); 283 OPENSSL_EXIT(ret); 284 } 285 286/* 287 *---------------------------------------------------------------------- 288 * int add_certs_from_file 289 * 290 * Read a list of certificates to be checked from a file. 291 * 292 * Results: 293 * number of certs added if successful, -1 if not. 294 *---------------------------------------------------------------------- 295 */ 296static int add_certs_from_file(STACK_OF(X509) *stack, char *certfile) 297 { 298 struct stat st; 299 BIO *in=NULL; 300 int count=0; 301 int ret= -1; 302 STACK_OF(X509_INFO) *sk=NULL; 303 X509_INFO *xi; 304 305 if ((stat(certfile,&st) != 0)) 306 { 307 BIO_printf(bio_err,"unable to load the file, %s\n",certfile); 308 goto end; 309 } 310 311 in=BIO_new(BIO_s_file()); 312 if ((in == NULL) || (BIO_read_filename(in,certfile) <= 0)) 313 { 314 BIO_printf(bio_err,"error opening the file, %s\n",certfile); 315 goto end; 316 } 317 318 /* This loads from a file, a stack of x509/crl/pkey sets */ 319 sk=PEM_X509_INFO_read_bio(in,NULL,NULL,NULL); 320 if (sk == NULL) { 321 BIO_printf(bio_err,"error reading the file, %s\n",certfile); 322 goto end; 323 } 324 325 /* scan over it and pull out the CRL's */ 326 while (sk_X509_INFO_num(sk)) 327 { 328 xi=sk_X509_INFO_shift(sk); 329 if (xi->x509 != NULL) 330 { 331 sk_X509_push(stack,xi->x509); 332 xi->x509=NULL; 333 count++; 334 } 335 X509_INFO_free(xi); 336 } 337 338 ret=count; 339end: 340 /* never need to OPENSSL_free x */ 341 if (in != NULL) BIO_free(in); 342 if (sk != NULL) sk_X509_INFO_free(sk); 343 return(ret); 344 } 345 346