crl2p7.c revision 55714
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 (one of DER, TXT 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 argc, char **argv) 86 { 87 int i,badops=0; 88 BIO *in=NULL,*out=NULL; 89 int informat,outformat; 90 char *infile,*outfile,*prog,*certfile; 91 PKCS7 *p7 = NULL; 92 PKCS7_SIGNED *p7s = NULL; 93 X509_CRL *crl=NULL; 94 STACK *certflst=NULL; 95 STACK_OF(X509_CRL) *crl_stack=NULL; 96 STACK_OF(X509) *cert_stack=NULL; 97 int ret=1,nocrl=0; 98 99 apps_startup(); 100 101 if (bio_err == NULL) 102 if ((bio_err=BIO_new(BIO_s_file())) != NULL) 103 BIO_set_fp(bio_err,stderr,BIO_NOCLOSE|BIO_FP_TEXT); 104 105 infile=NULL; 106 outfile=NULL; 107 informat=FORMAT_PEM; 108 outformat=FORMAT_PEM; 109 110 prog=argv[0]; 111 argc--; 112 argv++; 113 while (argc >= 1) 114 { 115 if (strcmp(*argv,"-inform") == 0) 116 { 117 if (--argc < 1) goto bad; 118 informat=str2fmt(*(++argv)); 119 } 120 else if (strcmp(*argv,"-outform") == 0) 121 { 122 if (--argc < 1) goto bad; 123 outformat=str2fmt(*(++argv)); 124 } 125 else if (strcmp(*argv,"-in") == 0) 126 { 127 if (--argc < 1) goto bad; 128 infile= *(++argv); 129 } 130 else if (strcmp(*argv,"-nocrl") == 0) 131 { 132 nocrl=1; 133 } 134 else if (strcmp(*argv,"-out") == 0) 135 { 136 if (--argc < 1) goto bad; 137 outfile= *(++argv); 138 } 139 else if (strcmp(*argv,"-certfile") == 0) 140 { 141 if (--argc < 1) goto bad; 142 if(!certflst) certflst = sk_new(NULL); 143 sk_push(certflst,*(++argv)); 144 } 145 else 146 { 147 BIO_printf(bio_err,"unknown option %s\n",*argv); 148 badops=1; 149 break; 150 } 151 argc--; 152 argv++; 153 } 154 155 if (badops) 156 { 157bad: 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 - one of DER TXT PEM\n"); 161 BIO_printf(bio_err," -outform arg output format - one of DER TXT 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," -certfile arg certificates file of chain to a trusted CA\n"); 165 BIO_printf(bio_err," (can be used more than once)\n"); 166 BIO_printf(bio_err," -nocrl no crl to load, just certs from '-certfile'\n"); 167 EXIT(1); 168 } 169 170 ERR_load_crypto_strings(); 171 172 in=BIO_new(BIO_s_file()); 173 out=BIO_new(BIO_s_file()); 174 if ((in == NULL) || (out == NULL)) 175 { 176 ERR_print_errors(bio_err); 177 goto end; 178 } 179 180 if (!nocrl) 181 { 182 if (infile == NULL) 183 BIO_set_fp(in,stdin,BIO_NOCLOSE); 184 else 185 { 186 if (BIO_read_filename(in,infile) <= 0) 187 { 188 perror(infile); 189 goto end; 190 } 191 } 192 193 if (informat == FORMAT_ASN1) 194 crl=d2i_X509_CRL_bio(in,NULL); 195 else if (informat == FORMAT_PEM) 196 crl=PEM_read_bio_X509_CRL(in,NULL,NULL,NULL); 197 else { 198 BIO_printf(bio_err,"bad input format specified for input crl\n"); 199 goto end; 200 } 201 if (crl == NULL) 202 { 203 BIO_printf(bio_err,"unable to load CRL\n"); 204 ERR_print_errors(bio_err); 205 goto end; 206 } 207 } 208 209 if ((p7=PKCS7_new()) == NULL) goto end; 210 if ((p7s=PKCS7_SIGNED_new()) == NULL) 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)) goto end; 216 if ((crl_stack=sk_X509_CRL_new(NULL)) == NULL) goto end; 217 p7s->crl=crl_stack; 218 if (crl != NULL) 219 { 220 sk_X509_CRL_push(crl_stack,crl); 221 crl=NULL; /* now part of p7 for Freeing */ 222 } 223 224 if ((cert_stack=sk_X509_new(NULL)) == NULL) goto end; 225 p7s->cert=cert_stack; 226 227 if(certflst) for(i = 0; i < sk_num(certflst); i++) { 228 certfile = sk_value(certflst, i); 229 if (add_certs_from_file(cert_stack,certfile) < 0) 230 { 231 BIO_printf(bio_err, "error loading certificates\n"); 232 ERR_print_errors(bio_err); 233 goto end; 234 } 235 } 236 237 sk_free(certflst); 238 239 if (outfile == NULL) 240 BIO_set_fp(out,stdout,BIO_NOCLOSE); 241 else 242 { 243 if (BIO_write_filename(out,outfile) <= 0) 244 { 245 perror(outfile); 246 goto end; 247 } 248 } 249 250 if (outformat == FORMAT_ASN1) 251 i=i2d_PKCS7_bio(out,p7); 252 else if (outformat == FORMAT_PEM) 253 i=PEM_write_bio_PKCS7(out,p7); 254 else { 255 BIO_printf(bio_err,"bad output format specified for outfile\n"); 256 goto end; 257 } 258 if (!i) 259 { 260 BIO_printf(bio_err,"unable to write pkcs7 object\n"); 261 ERR_print_errors(bio_err); 262 goto end; 263 } 264 ret=0; 265end: 266 if (in != NULL) BIO_free(in); 267 if (out != NULL) BIO_free(out); 268 if (p7 != NULL) PKCS7_free(p7); 269 if (crl != NULL) X509_CRL_free(crl); 270 271 EXIT(ret); 272 } 273 274/* 275 *---------------------------------------------------------------------- 276 * int add_certs_from_file 277 * 278 * Read a list of certificates to be checked from a file. 279 * 280 * Results: 281 * number of certs added if successful, -1 if not. 282 *---------------------------------------------------------------------- 283 */ 284static int add_certs_from_file(STACK_OF(X509) *stack, char *certfile) 285 { 286 struct stat st; 287 BIO *in=NULL; 288 int count=0; 289 int ret= -1; 290 STACK_OF(X509_INFO) *sk=NULL; 291 X509_INFO *xi; 292 293 if ((stat(certfile,&st) != 0)) 294 { 295 BIO_printf(bio_err,"unable to load the file, %s\n",certfile); 296 goto end; 297 } 298 299 in=BIO_new(BIO_s_file()); 300 if ((in == NULL) || (BIO_read_filename(in,certfile) <= 0)) 301 { 302 BIO_printf(bio_err,"error opening the file, %s\n",certfile); 303 goto end; 304 } 305 306 /* This loads from a file, a stack of x509/crl/pkey sets */ 307 sk=PEM_X509_INFO_read_bio(in,NULL,NULL,NULL); 308 if (sk == NULL) { 309 BIO_printf(bio_err,"error reading the file, %s\n",certfile); 310 goto end; 311 } 312 313 /* scan over it and pull out the CRL's */ 314 while (sk_X509_INFO_num(sk)) 315 { 316 xi=sk_X509_INFO_shift(sk); 317 if (xi->x509 != NULL) 318 { 319 sk_X509_push(stack,xi->x509); 320 xi->x509=NULL; 321 count++; 322 } 323 X509_INFO_free(xi); 324 } 325 326 ret=count; 327end: 328 /* never need to Free x */ 329 if (in != NULL) BIO_free(in); 330 if (sk != NULL) sk_X509_INFO_free(sk); 331 return(ret); 332 } 333 334