Annotation of src/usr.bin/openssl/crl2p7.c, Revision 1.1
1.1 ! jsing 1: /* $OpenBSD: crl2p7.c,v 1.20 2014/07/14 00:35:10 deraadt 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: ERR_load_crypto_strings();
! 159:
! 160: in = BIO_new(BIO_s_file());
! 161: out = BIO_new(BIO_s_file());
! 162: if ((in == NULL) || (out == NULL)) {
! 163: ERR_print_errors(bio_err);
! 164: goto end;
! 165: }
! 166: if (!nocrl) {
! 167: if (infile == NULL)
! 168: BIO_set_fp(in, stdin, BIO_NOCLOSE);
! 169: else {
! 170: if (BIO_read_filename(in, infile) <= 0) {
! 171: perror(infile);
! 172: goto end;
! 173: }
! 174: }
! 175:
! 176: if (informat == FORMAT_ASN1)
! 177: crl = d2i_X509_CRL_bio(in, NULL);
! 178: else if (informat == FORMAT_PEM)
! 179: crl = PEM_read_bio_X509_CRL(in, NULL, NULL, NULL);
! 180: else {
! 181: BIO_printf(bio_err,
! 182: "bad input format specified for input crl\n");
! 183: goto end;
! 184: }
! 185: if (crl == NULL) {
! 186: BIO_printf(bio_err, "unable to load CRL\n");
! 187: ERR_print_errors(bio_err);
! 188: goto end;
! 189: }
! 190: }
! 191: if ((p7 = PKCS7_new()) == NULL)
! 192: goto end;
! 193: if ((p7s = PKCS7_SIGNED_new()) == NULL)
! 194: goto end;
! 195: p7->type = OBJ_nid2obj(NID_pkcs7_signed);
! 196: p7->d.sign = p7s;
! 197: p7s->contents->type = OBJ_nid2obj(NID_pkcs7_data);
! 198:
! 199: if (!ASN1_INTEGER_set(p7s->version, 1))
! 200: goto end;
! 201: if ((crl_stack = sk_X509_CRL_new_null()) == NULL)
! 202: goto end;
! 203: p7s->crl = crl_stack;
! 204: if (crl != NULL) {
! 205: sk_X509_CRL_push(crl_stack, crl);
! 206: crl = NULL; /* now part of p7 for freeing */
! 207: }
! 208: if ((cert_stack = sk_X509_new_null()) == NULL)
! 209: goto end;
! 210: p7s->cert = cert_stack;
! 211:
! 212: if (certflst)
! 213: for (i = 0; i < sk_OPENSSL_STRING_num(certflst); i++) {
! 214: certfile = sk_OPENSSL_STRING_value(certflst, i);
! 215: if (add_certs_from_file(cert_stack, certfile) < 0) {
! 216: BIO_printf(bio_err,
! 217: "error loading certificates\n");
! 218: ERR_print_errors(bio_err);
! 219: goto end;
! 220: }
! 221: }
! 222:
! 223: sk_OPENSSL_STRING_free(certflst);
! 224:
! 225: if (outfile == NULL) {
! 226: BIO_set_fp(out, stdout, BIO_NOCLOSE);
! 227: } else {
! 228: if (BIO_write_filename(out, outfile) <= 0) {
! 229: perror(outfile);
! 230: goto end;
! 231: }
! 232: }
! 233:
! 234: if (outformat == FORMAT_ASN1)
! 235: i = i2d_PKCS7_bio(out, p7);
! 236: else if (outformat == FORMAT_PEM)
! 237: i = PEM_write_bio_PKCS7(out, p7);
! 238: else {
! 239: BIO_printf(bio_err,
! 240: "bad output format specified for outfile\n");
! 241: goto end;
! 242: }
! 243: if (!i) {
! 244: BIO_printf(bio_err, "unable to write pkcs7 object\n");
! 245: ERR_print_errors(bio_err);
! 246: goto end;
! 247: }
! 248: ret = 0;
! 249:
! 250: end:
! 251: if (in != NULL)
! 252: BIO_free(in);
! 253: if (out != NULL)
! 254: BIO_free_all(out);
! 255: if (p7 != NULL)
! 256: PKCS7_free(p7);
! 257: if (crl != NULL)
! 258: X509_CRL_free(crl);
! 259:
! 260:
! 261: return (ret);
! 262: }
! 263:
! 264: /*
! 265: *----------------------------------------------------------------------
! 266: * int add_certs_from_file
! 267: *
! 268: * Read a list of certificates to be checked from a file.
! 269: *
! 270: * Results:
! 271: * number of certs added if successful, -1 if not.
! 272: *----------------------------------------------------------------------
! 273: */
! 274: static int
! 275: add_certs_from_file(STACK_OF(X509) * stack, char *certfile)
! 276: {
! 277: BIO *in = NULL;
! 278: int count = 0;
! 279: int ret = -1;
! 280: STACK_OF(X509_INFO) * sk = NULL;
! 281: X509_INFO *xi;
! 282:
! 283: in = BIO_new(BIO_s_file());
! 284: if ((in == NULL) || (BIO_read_filename(in, certfile) <= 0)) {
! 285: BIO_printf(bio_err, "error opening the file, %s\n", certfile);
! 286: goto end;
! 287: }
! 288: /* This loads from a file, a stack of x509/crl/pkey sets */
! 289: sk = PEM_X509_INFO_read_bio(in, NULL, NULL, NULL);
! 290: if (sk == NULL) {
! 291: BIO_printf(bio_err, "error reading the file, %s\n", certfile);
! 292: goto end;
! 293: }
! 294: /* scan over it and pull out the CRL's */
! 295: while (sk_X509_INFO_num(sk)) {
! 296: xi = sk_X509_INFO_shift(sk);
! 297: if (xi->x509 != NULL) {
! 298: sk_X509_push(stack, xi->x509);
! 299: xi->x509 = NULL;
! 300: count++;
! 301: }
! 302: X509_INFO_free(xi);
! 303: }
! 304:
! 305: ret = count;
! 306:
! 307: end:
! 308: /* never need to free x */
! 309: if (in != NULL)
! 310: BIO_free(in);
! 311: if (sk != NULL)
! 312: sk_X509_INFO_free(sk);
! 313: return (ret);
! 314: }
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