release/src/router/openssl/crypto/ocsp/ocsp_lib.c

   1 /* ocsp_lib.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/rand.h>
  68 #include <openssl/x509.h>
  69 #include <openssl/pem.h>
  70 #include <openssl/x509v3.h>
  71 #include <openssl/ocsp.h>
  72 #include <openssl/asn1t.h>
  73
  74 /* Convert a certificate and its issuer to an OCSP_CERTID */
  75
  76 OCSP_CERTID *OCSP_cert_to_id(const EVP_MD *dgst, X509 *subject, X509 *issuer)
  77 {
  78         X509_NAME *iname;
  79         ASN1_INTEGER *serial;
  80         ASN1_BIT_STRING *ikey;
  81 #ifndef OPENSSL_NO_SHA1
  82         if(!dgst) dgst = EVP_sha1();
  83 #endif
  84         if (subject)
  85                 {
  86                 iname = X509_get_issuer_name(subject);
  87                 serial = X509_get_serialNumber(subject);
  88                 }
  89         else
  90                 {
  91                 iname = X509_get_subject_name(issuer);
  92                 serial = NULL;
  93                 }
  94         ikey = X509_get0_pubkey_bitstr(issuer);
  95         return OCSP_cert_id_new(dgst, iname, ikey, serial);
  96 }
  97
  98
  99 OCSP_CERTID *OCSP_cert_id_new(const EVP_MD *dgst,
 100                               X509_NAME *issuerName,
 101                               ASN1_BIT_STRING* issuerKey,
 102                               ASN1_INTEGER *serialNumber)
 103         {
 104         int nid;
 105         unsigned int i;
 106         X509_ALGOR *alg;
 107         OCSP_CERTID *cid = NULL;
 108         unsigned char md[EVP_MAX_MD_SIZE];
 109
 110         if (!(cid = OCSP_CERTID_new())) goto err;
 111
 112         alg = cid->hashAlgorithm;
 113         if (alg->algorithm != NULL) ASN1_OBJECT_free(alg->algorithm);
 114         if ((nid = EVP_MD_type(dgst)) == NID_undef)
 115                 {
 116                 OCSPerr(OCSP_F_OCSP_CERT_ID_NEW,OCSP_R_UNKNOWN_NID);
 117                 goto err;
 118                 }
 119         if (!(alg->algorithm=OBJ_nid2obj(nid))) goto err;
 120         if ((alg->parameter=ASN1_TYPE_new()) == NULL) goto err;
 121         alg->parameter->type=V_ASN1_NULL;
 122
 123         if (!X509_NAME_digest(issuerName, dgst, md, &i)) goto digerr;
 124         if (!(ASN1_OCTET_STRING_set(cid->issuerNameHash, md, i))) goto err;
 125
 126         /* Calculate the issuerKey hash, excluding tag and length */
 127         if (!EVP_Digest(issuerKey->data, issuerKey->length, md, &i, dgst, NULL))
 128                 goto err;
 129
 130         if (!(ASN1_OCTET_STRING_set(cid->issuerKeyHash, md, i))) goto err;
 131
 132         if (serialNumber)
 133                 {
 134                 ASN1_INTEGER_free(cid->serialNumber);
 135                 if (!(cid->serialNumber = ASN1_INTEGER_dup(serialNumber))) goto err;
 136                 }
 137         return cid;
 138 digerr:
 139         OCSPerr(OCSP_F_OCSP_CERT_ID_NEW,OCSP_R_DIGEST_ERR);
 140 err:
 141         if (cid) OCSP_CERTID_free(cid);
 142         return NULL;
 143         }
 144
 145 int OCSP_id_issuer_cmp(OCSP_CERTID *a, OCSP_CERTID *b)
 146         {
 147         int ret;
 148         ret = OBJ_cmp(a->hashAlgorithm->algorithm, b->hashAlgorithm->algorithm);
 149         if (ret) return ret;
 150         ret = ASN1_OCTET_STRING_cmp(a->issuerNameHash, b->issuerNameHash);
 151         if (ret) return ret;
 152         return ASN1_OCTET_STRING_cmp(a->issuerKeyHash, b->issuerKeyHash);
 153         }
 154
 155 int OCSP_id_cmp(OCSP_CERTID *a, OCSP_CERTID *b)
 156         {
 157         int ret;
 158         ret = OCSP_id_issuer_cmp(a, b);
 159         if (ret) return ret;
 160         return ASN1_INTEGER_cmp(a->serialNumber, b->serialNumber);
 161         }
 162
 163
 164 /* Parse a URL and split it up into host, port and path components and whether
 165  * it is SSL.
 166  */
 167
 168 int OCSP_parse_url(char *url, char **phost, char **pport, char **ppath, int *pssl)
 169         {
 170         char *p, *buf;
 171
 172         char *host, *port;
 173
 174         *phost = NULL;
 175         *pport = NULL;
 176         *ppath = NULL;
 177
 178         /* dup the buffer since we are going to mess with it */
 179         buf = BUF_strdup(url);
 180         if (!buf) goto mem_err;
 181
 182         /* Check for initial colon */
 183         p = strchr(buf, ':');
 184
 185         if (!p) goto parse_err;
 186
 187         *(p++) = '\0';
 188
 189         if (!strcmp(buf, "http"))
 190                 {
 191                 *pssl = 0;
 192                 port = "80";
 193                 }
 194         else if (!strcmp(buf, "https"))
 195                 {
 196                 *pssl = 1;
 197                 port = "443";
 198                 }
 199         else
 200                 goto parse_err;
 201
 202         /* Check for double slash */
 203         if ((p[0] != '/') || (p[1] != '/'))
 204                 goto parse_err;
 205
 206         p += 2;
 207
 208         host = p;
 209
 210         /* Check for trailing part of path */
 211
 212         p = strchr(p, '/');
 213
 214         if (!p)
 215                 *ppath = BUF_strdup("/");
 216         else
 217                 {
 218                 *ppath = BUF_strdup(p);
 219                 /* Set start of path to 0 so hostname is valid */
 220                 *p = '\0';
 221                 }
 222
 223         if (!*ppath) goto mem_err;
 224
 225         /* Look for optional ':' for port number */
 226         if ((p = strchr(host, ':')))
 227                 {
 228                 *p = 0;
 229                 port = p + 1;
 230                 }
 231         else
 232                 {
 233                 /* Not found: set default port */
 234                 if (*pssl) port = "443";
 235                 else port = "80";
 236                 }
 237
 238         *pport = BUF_strdup(port);
 239         if (!*pport) goto mem_err;
 240
 241         *phost = BUF_strdup(host);
 242
 243         if (!*phost) goto mem_err;
 244
 245         OPENSSL_free(buf);
 246
 247         return 1;
 248
 249         mem_err:
 250         OCSPerr(OCSP_F_OCSP_PARSE_URL, ERR_R_MALLOC_FAILURE);
 251         goto err;
 252
 253         parse_err:
 254         OCSPerr(OCSP_F_OCSP_PARSE_URL, OCSP_R_ERROR_PARSING_URL);
 255
 256
 257         err:
 258         if (buf) OPENSSL_free(buf);
 259         if (*ppath) OPENSSL_free(*ppath);
 260         if (*pport) OPENSSL_free(*pport);
 261         if (*phost) OPENSSL_free(*phost);
 262         return 0;
 263
 264         }
 265
 266 IMPLEMENT_ASN1_DUP_FUNCTION(OCSP_CERTID)