crypto/openssl-0.9.7d/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
  73 /* Convert a certificate and its issuer to an OCSP_CERTID */
  74
  75 OCSP_CERTID *OCSP_cert_to_id(const EVP_MD *dgst, X509 *subject, X509 *issuer)
  76 {
  77         X509_NAME *iname;
  78         ASN1_INTEGER *serial;
  79         ASN1_BIT_STRING *ikey;
  80 #ifndef OPENSSL_NO_SHA1
  81         if(!dgst) dgst = EVP_sha1();
  82 #endif
  83         if (subject)
  84                 {
  85                 iname = X509_get_issuer_name(subject);
  86                 serial = X509_get_serialNumber(subject);
  87                 }
  88         else
  89                 {
  90                 iname = X509_get_subject_name(issuer);
  91                 serial = NULL;
  92                 }
  93         ikey = X509_get0_pubkey_bitstr(issuer);
  94         return OCSP_cert_id_new(dgst, iname, ikey, serial);
  95 }
  96
  97
  98 OCSP_CERTID *OCSP_cert_id_new(const EVP_MD *dgst,
  99                               X509_NAME *issuerName,
 100                               ASN1_BIT_STRING* issuerKey,
 101                               ASN1_INTEGER *serialNumber)
 102         {
 103         int nid;
 104         unsigned int i;
 105         X509_ALGOR *alg;
 106         OCSP_CERTID *cid = NULL;
 107         unsigned char md[EVP_MAX_MD_SIZE];
 108
 109         if (!(cid = OCSP_CERTID_new())) goto err;
 110
 111         alg = cid->hashAlgorithm;
 112         if (alg->algorithm != NULL) ASN1_OBJECT_free(alg->algorithm);
 113         if ((nid = EVP_MD_type(dgst)) == NID_undef)
 114                 {
 115                 OCSPerr(OCSP_F_CERT_ID_NEW,OCSP_R_UNKNOWN_NID);
 116                 goto err;
 117                 }
 118         if (!(alg->algorithm=OBJ_nid2obj(nid))) goto err;
 119         if ((alg->parameter=ASN1_TYPE_new()) == NULL) goto err;
 120         alg->parameter->type=V_ASN1_NULL;
 121
 122         if (!X509_NAME_digest(issuerName, dgst, md, &i)) goto digerr;
 123         if (!(ASN1_OCTET_STRING_set(cid->issuerNameHash, md, i))) goto err;
 124
 125         /* Calculate the issuerKey hash, excluding tag and length */
 126         EVP_Digest(issuerKey->data, issuerKey->length, md, &i, dgst, NULL);
 127
 128         if (!(ASN1_OCTET_STRING_set(cid->issuerKeyHash, md, i))) goto err;
 129
 130         if (serialNumber)
 131                 {
 132                 ASN1_INTEGER_free(cid->serialNumber);
 133                 if (!(cid->serialNumber = ASN1_INTEGER_dup(serialNumber))) goto err;
 134                 }
 135         return cid;
 136 digerr:
 137         OCSPerr(OCSP_F_CERT_ID_NEW,OCSP_R_DIGEST_ERR);
 138 err:
 139         if (cid) OCSP_CERTID_free(cid);
 140         return NULL;
 141         }
 142
 143 int OCSP_id_issuer_cmp(OCSP_CERTID *a, OCSP_CERTID *b)
 144         {
 145         int ret;
 146         ret = OBJ_cmp(a->hashAlgorithm->algorithm, b->hashAlgorithm->algorithm);
 147         if (ret) return ret;
 148         ret = ASN1_OCTET_STRING_cmp(a->issuerNameHash, b->issuerNameHash);
 149         if (ret) return ret;
 150         return ASN1_OCTET_STRING_cmp(a->issuerKeyHash, b->issuerKeyHash);
 151         }
 152
 153 int OCSP_id_cmp(OCSP_CERTID *a, OCSP_CERTID *b)
 154         {
 155         int ret;
 156         ret = OCSP_id_issuer_cmp(a, b);
 157         if (ret) return ret;
 158         return ASN1_INTEGER_cmp(a->serialNumber, b->serialNumber);
 159         }
 160
 161
 162 /* Parse a URL and split it up into host, port and path components and whether
 163  * it is SSL.
 164  */
 165
 166 int OCSP_parse_url(char *url, char **phost, char **pport, char **ppath, int *pssl)
 167         {
 168         char *p, *buf;
 169
 170         char *host, *port;
 171
 172         /* dup the buffer since we are going to mess with it */
 173         buf = BUF_strdup(url);
 174         if (!buf) goto mem_err;
 175
 176         *phost = NULL;
 177         *pport = NULL;
 178         *ppath = NULL;
 179
 180         /* Check for initial colon */
 181         p = strchr(buf, ':');
 182
 183         if (!p) goto parse_err;
 184
 185         *(p++) = '\0';
 186
 187         if (!strcmp(buf, "http"))
 188                 {
 189                 *pssl = 0;
 190                 port = "80";
 191                 }
 192         else if (!strcmp(buf, "https"))
 193                 {
 194                 *pssl = 1;
 195                 port = "443";
 196                 }
 197         else
 198                 goto parse_err;
 199
 200         /* Check for double slash */
 201         if ((p[0] != '/') || (p[1] != '/'))
 202                 goto parse_err;
 203
 204         p += 2;
 205
 206         host = p;
 207
 208         /* Check for trailing part of path */
 209
 210         p = strchr(p, '/');
 211
 212         if (!p)
 213                 *ppath = BUF_strdup("/");
 214         else
 215                 {
 216                 *ppath = BUF_strdup(p);
 217                 /* Set start of path to 0 so hostname is valid */
 218                 *p = '\0';
 219                 }
 220
 221         if (!*ppath) goto mem_err;
 222
 223         /* Look for optional ':' for port number */
 224         if ((p = strchr(host, ':')))
 225                 {
 226                 *p = 0;
 227                 port = p + 1;
 228                 }
 229         else
 230                 {
 231                 /* Not found: set default port */
 232                 if (*pssl) port = "443";
 233                 else port = "80";
 234                 }
 235
 236         *pport = BUF_strdup(port);
 237         if (!*pport) goto mem_err;
 238
 239         *phost = BUF_strdup(host);
 240
 241         if (!*phost) goto mem_err;
 242
 243         OPENSSL_free(buf);
 244
 245         return 1;
 246
 247         mem_err:
 248         OCSPerr(OCSP_F_OCSP_PARSE_URL, ERR_R_MALLOC_FAILURE);
 249         goto err;
 250
 251         parse_err:
 252         OCSPerr(OCSP_F_OCSP_PARSE_URL, OCSP_R_ERROR_PARSING_URL);
 253
 254
 255         err:
 256         if (buf) OPENSSL_free(buf);
 257         if (*ppath) OPENSSL_free(*ppath);
 258         if (*pport) OPENSSL_free(*pport);
 259         if (*phost) OPENSSL_free(*phost);
 260         return 0;
 261
 262         }