crypto/ocsp/ocsp_ext.c

   1 /* ocsp_ext.c */
   2 /* Written by Tom Titchener <Tom_Titchener@groove.net> for the OpenSSL
   3  * project. */
   4
   5 /* History:
   6    This file was transfered to Richard Levitte from CertCo by Kathy
   7    Weinhold in mid-spring 2000 to be included in OpenSSL or released
   8    as a patch kit. */
   9
  10 /* ====================================================================
  11  * Copyright (c) 1998-2000 The OpenSSL Project.  All rights reserved.
  12  *
  13  * Redistribution and use in source and binary forms, with or without
  14  * modification, are permitted provided that the following conditions
  15  * are met:
  16  *
  17  * 1. Redistributions of source code must retain the above copyright
  18  *    notice, this list of conditions and the following disclaimer.
  19  *
  20  * 2. Redistributions in binary form must reproduce the above copyright
  21  *    notice, this list of conditions and the following disclaimer in
  22  *    the documentation and/or other materials provided with the
  23  *    distribution.
  24  *
  25  * 3. All advertising materials mentioning features or use of this
  26  *    software must display the following acknowledgment:
  27  *    "This product includes software developed by the OpenSSL Project
  28  *    for use in the OpenSSL Toolkit. (http://www.openssl.org/)"
  29  *
  30  * 4. The names "OpenSSL Toolkit" and "OpenSSL Project" must not be used to
  31  *    endorse or promote products derived from this software without
  32  *    prior written permission. For written permission, please contact
  33  *    openssl-core@openssl.org.
  34  *
  35  * 5. Products derived from this software may not be called "OpenSSL"
  36  *    nor may "OpenSSL" appear in their names without prior written
  37  *    permission of the OpenSSL Project.
  38  *
  39  * 6. Redistributions of any form whatsoever must retain the following
  40  *    acknowledgment:
  41  *    "This product includes software developed by the OpenSSL Project
  42  *    for use in the OpenSSL Toolkit (http://www.openssl.org/)"
  43  *
  44  * THIS SOFTWARE IS PROVIDED BY THE OpenSSL PROJECT ``AS IS'' AND ANY
  45  * EXPRESSED OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
  46  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
  47  * PURPOSE ARE DISCLAIMED.  IN NO EVENT SHALL THE OpenSSL PROJECT OR
  48  * ITS CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
  49  * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
  50  * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
  51  * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
  52  * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT,
  53  * STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
  54  * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED
  55  * OF THE POSSIBILITY OF SUCH DAMAGE.
  56  * ====================================================================
  57  *
  58  * This product includes cryptographic software written by Eric Young
  59  * (eay@cryptsoft.com).  This product includes software written by Tim
  60  * Hudson (tjh@cryptsoft.com).
  61  *
  62  */
  63
  64 #include <stdio.h>
  65 #include <cryptlib.h>
  66 #include <openssl/objects.h>
  67 #include <openssl/asn1_mac.h>
  68 #include <openssl/x509.h>
  69 #include <openssl/ocsp.h>
  70 #include <openssl/x509v3.h>
  71
  72 /* Make sure we work well with older variants of OpenSSL */
  73 #ifndef OPENSSL_malloc
  74 #define OPENSSL_malloc Malloc
  75 #endif
  76 #ifndef OPENSSL_realloc
  77 #define OPENSSL_realloc Realloc
  78 #endif
  79 #ifndef OPENSSL_free
  80 #define OPENSSL_free Free
  81 #endif
  82
  83 /* also CRL Entry Extensions */
  84
  85 ASN1_STRING *ASN1_STRING_encode(ASN1_STRING *s, int (*i2d)(),
  86                                 char *data, STACK_OF(ASN1_OBJECT) *sk)
  87         {
  88         int i;
  89         unsigned char *p, *b = NULL;
  90
  91         if (data)
  92                 {
  93                 if ((i=i2d(data,NULL)) <= 0) goto err;
  94                 if (!(b=p=(unsigned char*)OPENSSL_malloc((unsigned int)i)))
  95                         goto err;
  96                 if (i2d(data, &p) <= 0) goto err;
  97                 }
  98         else if (sk)
  99                 {
 100                 if ((i=i2d_ASN1_SET_OF_ASN1_OBJECT(sk,NULL,i2d,V_ASN1_SEQUENCE,
 101                                    V_ASN1_UNIVERSAL,IS_SEQUENCE))<=0) goto err;
 102                 if (!(b=p=(unsigned char*)OPENSSL_malloc((unsigned int)i)))
 103                         goto err;
 104                 if (i2d_ASN1_SET_OF_ASN1_OBJECT(sk,&p,i2d,V_ASN1_SEQUENCE,
 105                                  V_ASN1_UNIVERSAL,IS_SEQUENCE)<=0) goto err;
 106                 }
 107         else
 108                 {
 109                 OCSPerr(OCSP_F_ASN1_STRING_ENCODE,OCSP_R_BAD_DATA);
 110                 goto err;
 111                 }
 112         if (!s && !(s = ASN1_STRING_new())) goto err;
 113         if (!(ASN1_STRING_set(s, b, i))) goto err;
 114         OPENSSL_free(b);
 115         return s;
 116 err:
 117         if (b) OPENSSL_free(b);
 118         return NULL;
 119         }
 120
 121 X509_EXTENSION *OCSP_nonce_new(void *p, unsigned int len)
 122         {
 123         X509_EXTENSION *x=NULL;
 124         if (!(x = X509_EXTENSION_new())) goto err;
 125         if (!(x->object = OBJ_nid2obj(NID_id_pkix_OCSP_Nonce))) goto err;
 126         if (!(ASN1_OCTET_STRING_set(x->value, p, len))) goto err;
 127         return x;
 128 err:
 129         if (x) X509_EXTENSION_free(x);
 130         return NULL;
 131         }
 132
 133 X509_EXTENSION *OCSP_crlID_new(char *url, long *n, char *tim)
 134         {
 135         X509_EXTENSION *x = NULL;
 136         OCSP_CRLID *cid = NULL;
 137
 138         if (!(cid = OCSP_CRLID_new())) goto err;
 139         if (url)
 140                 {
 141                 if (!(cid->crlUrl = ASN1_IA5STRING_new())) goto err;
 142                 if (!(ASN1_STRING_set(cid->crlUrl, url, -1))) goto err;
 143                 }
 144         if (n)
 145                 {
 146                 if (!(cid->crlNum = ASN1_INTEGER_new())) goto err;
 147                 if (!(ASN1_INTEGER_set(cid->crlNum, *n))) goto err;
 148                 }
 149         if (tim)
 150                 {
 151                 if (!(cid->crlTime = ASN1_GENERALIZEDTIME_new())) goto err;
 152                 if (!(ASN1_GENERALIZEDTIME_set_string(cid->crlTime, tim)))
 153                         goto err;
 154                 }
 155         if (!(x = X509_EXTENSION_new())) goto err;
 156         if (!(x->object = OBJ_nid2obj(NID_id_pkix_OCSP_CrlID))) goto err;
 157         if (!(ASN1_STRING_encode(x->value,i2d_OCSP_CRLID,(char*)cid,NULL)))
 158                 goto err;
 159         OCSP_CRLID_free(cid);
 160         return x;
 161 err:
 162         if (x) X509_EXTENSION_free(x);
 163         if (cid) OCSP_CRLID_free(cid);
 164         return NULL;
 165         }
 166
 167 /*   AcceptableResponses ::= SEQUENCE OF OBJECT IDENTIFIER */
 168 X509_EXTENSION *OCSP_accept_responses_new(char **oids)
 169         {
 170         int nid;
 171         STACK_OF(ASN1_OBJECT) *sk = NULL;
 172         ASN1_OBJECT *o = NULL;
 173         X509_EXTENSION *x = NULL;
 174
 175         if (!(sk = sk_ASN1_OBJECT_new(NULL))) goto err;
 176         while (oids && *oids)
 177                 {
 178                 if ((nid=OBJ_txt2nid(*oids))!=NID_undef&&(o=OBJ_nid2obj(nid)))
 179                         sk_ASN1_OBJECT_push(sk, o);
 180                 oids++;
 181                 }
 182         if (!(x = X509_EXTENSION_new())) goto err;
 183         if (!(x->object = OBJ_nid2obj(NID_id_pkix_OCSP_acceptableResponses)))
 184                 goto err;
 185         if (!(ASN1_STRING_encode(x->value,i2d_ASN1_OBJECT,NULL,sk)))
 186                 goto err;
 187         sk_ASN1_OBJECT_pop_free(sk, ASN1_OBJECT_free);
 188         return x;
 189 err:
 190         if (x) X509_EXTENSION_free(x);
 191         if (sk) sk_ASN1_OBJECT_pop_free(sk, ASN1_OBJECT_free);
 192         return NULL;
 193         }
 194
 195 /*  ArchiveCutoff ::= GeneralizedTime */
 196 X509_EXTENSION *OCSP_archive_cutoff_new(char* tim)
 197         {
 198         X509_EXTENSION *x=NULL;
 199         ASN1_GENERALIZEDTIME *gt = NULL;
 200
 201         if (!(gt = ASN1_GENERALIZEDTIME_new())) goto err;
 202         if (!(ASN1_GENERALIZEDTIME_set_string(gt, tim))) goto err;
 203         if (!(x = X509_EXTENSION_new())) goto err;
 204         if (!(x->object=OBJ_nid2obj(NID_id_pkix_OCSP_archiveCutoff)))goto err;
 205         if (!(ASN1_STRING_encode(x->value,i2d_ASN1_GENERALIZEDTIME,
 206                                  (char*)gt,NULL))) goto err;
 207         ASN1_GENERALIZEDTIME_free(gt);
 208         return x;
 209 err:
 210         if (gt) ASN1_GENERALIZEDTIME_free(gt);
 211         if (x) X509_EXTENSION_free(x);
 212         return NULL;
 213         }
 214
 215 /* per ACCESS_DESCRIPTION parameter are oids, of which there are currently
 216  * two--NID_ad_ocsp, NID_id_ad_caIssuers--and GeneralName value.  This
 217  * method forces NID_ad_ocsp and uniformResourceLocator [6] IA5String.
 218  */
 219 X509_EXTENSION *OCSP_url_svcloc_new(X509_NAME* issuer, char **urls)
 220         {
 221         X509_EXTENSION *x = NULL;
 222         ASN1_IA5STRING *ia5 = NULL;
 223         OCSP_SERVICELOC *sloc = NULL;
 224         ACCESS_DESCRIPTION *ad = NULL;
 225
 226         if (!(sloc = OCSP_SERVICELOC_new())) goto err;
 227         if (!(sloc->issuer = X509_NAME_dup(issuer))) goto err;
 228         if (urls && *urls && !(sloc->locator = sk_ACCESS_DESCRIPTION_new(NULL))) goto err;
 229         while (urls && *urls)
 230                 {
 231                 if (!(ad = ACCESS_DESCRIPTION_new())) goto err;
 232                 if (!(ad->method=OBJ_nid2obj(NID_ad_OCSP))) goto err;
 233                 if (!(ad->location = GENERAL_NAME_new())) goto err;
 234                 if (!(ia5 = ASN1_IA5STRING_new())) goto err;
 235                 if (!ASN1_STRING_set((ASN1_STRING*)ia5, *urls, -1)) goto err;
 236                 ad->location->type = GEN_URI;
 237                 ad->location->d.ia5 = ia5;
 238                 if (!sk_ACCESS_DESCRIPTION_push(sloc->locator, ad)) goto err;
 239                 urls++;
 240                 }
 241         if (!(x = X509_EXTENSION_new())) goto err;
 242         if (!(x->object = OBJ_nid2obj(NID_id_pkix_OCSP_serviceLocator)))
 243                 goto err;
 244         if (!(ASN1_STRING_encode(x->value, i2d_OCSP_SERVICELOC,
 245                                  (char*)sloc, NULL))) goto err;
 246         OCSP_SERVICELOC_free(sloc);
 247         return x;
 248 err:
 249         if (x) X509_EXTENSION_free(x);
 250         if (sloc) OCSP_SERVICELOC_free(sloc);
 251         return NULL;
 252         }
 253
 254 int OCSP_extensions_print(BIO *bp,
 255                           STACK_OF(X509_EXTENSION) *sk,
 256                           char *title)
 257         {
 258         int i;
 259         if (!sk) return 1;
 260         if (BIO_printf(bp, "%s:\n", title) <= 0) return 0;
 261         for (i=0; i<sk_X509_EXTENSION_num(sk); i++)
 262                 OCSP_extension_print(bp, sk_X509_EXTENSION_value(sk,i), 4);
 263         return sk_X509_EXTENSION_num(sk);
 264         }
 265
 266 int OCSP_extension_print(BIO *bp,
 267                          X509_EXTENSION *x,
 268                          int ind)
 269         {
 270         int i, j;
 271         STACK_OF(ASN1_OBJECT) *sk = NULL;
 272         unsigned char *p;
 273         OCSP_CRLID *crlid = NULL;
 274         OCSP_SERVICELOC *sloc = NULL;
 275         ASN1_GENERALIZEDTIME *gt = NULL;
 276
 277         if (!x) return 1;
 278         switch (OBJ_obj2nid(x->object))
 279                 {
 280                 case NID_id_pkix_OCSP_Nonce:
 281                         if (BIO_printf(bp, "%*snonce: ", ind, "") <= 0)
 282                                 goto err;
 283                         if (M_ASN1_OCTET_STRING_print(bp, x->value) <= 0)
 284                                 goto err;
 285                         if (BIO_write(bp, "\n", 1) <= 0) goto err;
 286                         break;
 287                 case NID_id_pkix_OCSP_CrlID:
 288                         if (BIO_printf(bp, "%*scrlId:\n", ind, "") <= 0)
 289                                 goto err;
 290                         p = x->value->data;
 291                         if (!(d2i_OCSP_CRLID(&crlid, &p, x->value->length)))
 292                                 goto err;
 293                         if (!OCSP_CRLID_print(bp, crlid, (2*ind))) goto err;
 294                         OCSP_CRLID_free(crlid);
 295                         break;
 296                 case NID_id_pkix_OCSP_acceptableResponses:
 297                         if (BIO_printf(bp,
 298                                       "%*sacceptable responses: ",
 299                                       ind, "") <= 0)
 300                                 goto err;
 301                         p = x->value->data;
 302                         if (!(d2i_ASN1_SET_OF_ASN1_OBJECT(&sk, &p, x->value->length,
 303                                            d2i_ASN1_OBJECT,
 304                                            ASN1_OBJECT_free,
 305                                            V_ASN1_SEQUENCE,
 306                                            V_ASN1_UNIVERSAL)))
 307                                 goto err;
 308                         for (i = 0; i < sk_ASN1_OBJECT_num(sk); i++)
 309                                 {
 310                                 j=OBJ_obj2nid(sk_ASN1_OBJECT_value(sk,i));
 311                                 if (BIO_printf(bp," %s ",
 312                                                (j == NID_undef)?"UNKNOWN":
 313                                                            OBJ_nid2ln(j)) <= 0)
 314                                           goto err;
 315                                 }
 316                         if (BIO_write(bp, "\n", 1) <= 0) goto err;
 317                         sk_ASN1_OBJECT_pop_free(sk, ASN1_OBJECT_free);
 318                         break;
 319                 case NID_id_pkix_OCSP_archiveCutoff:
 320                         if (BIO_printf(bp, "%*sarchive cutoff: ", ind, "")<=0)
 321                                 goto err;
 322                         p = x->value->data;
 323                         if (!d2i_ASN1_GENERALIZEDTIME(&gt, &p,
 324                                                       x->value->length))
 325                                 goto err;
 326                         if (!ASN1_GENERALIZEDTIME_print(bp, gt)) goto err;
 327                         if (BIO_write(bp, "\n", 1) <= 0) goto err;
 328                         ASN1_GENERALIZEDTIME_free(gt);
 329                         break;
 330                 case NID_id_pkix_OCSP_serviceLocator:
 331                   if (BIO_printf(bp, "%*sservice locator:\n", ind, "") <= 0)
 332                                 goto err;
 333                         p = x->value->data;
 334                         if (!d2i_OCSP_SERVICELOC(&sloc, &p,
 335                                                  x->value->length))
 336                                 goto err;
 337                         if (!OCSP_SERVICELOC_print(bp,sloc,(2*ind))) goto err;
 338                         OCSP_SERVICELOC_free(sloc);
 339                         break;
 340                 case NID_undef:
 341                 default:
 342                         if (BIO_printf(bp,"%*sunrecognized oid: ",ind,"") <= 0)
 343                                 goto err;
 344                         break;
 345                 }
 346         return 1;
 347 err:
 348         return 0;
 349         }