Alexandre Savard | 1b09e31 | 2012-08-07 20:33:29 -0400 | [diff] [blame] | 1 | /* ocsp_srv.c */ |
| 2 | /* Written by Dr Stephen N Henson (steve@openssl.org) for the OpenSSL |
| 3 | * project 2001. |
| 4 | */ |
| 5 | /* ==================================================================== |
| 6 | * Copyright (c) 1998-2001 The OpenSSL Project. All rights reserved. |
| 7 | * |
| 8 | * Redistribution and use in source and binary forms, with or without |
| 9 | * modification, are permitted provided that the following conditions |
| 10 | * are met: |
| 11 | * |
| 12 | * 1. Redistributions of source code must retain the above copyright |
| 13 | * notice, this list of conditions and the following disclaimer. |
| 14 | * |
| 15 | * 2. Redistributions in binary form must reproduce the above copyright |
| 16 | * notice, this list of conditions and the following disclaimer in |
| 17 | * the documentation and/or other materials provided with the |
| 18 | * distribution. |
| 19 | * |
| 20 | * 3. All advertising materials mentioning features or use of this |
| 21 | * software must display the following acknowledgment: |
| 22 | * "This product includes software developed by the OpenSSL Project |
| 23 | * for use in the OpenSSL Toolkit. (http://www.openssl.org/)" |
| 24 | * |
| 25 | * 4. The names "OpenSSL Toolkit" and "OpenSSL Project" must not be used to |
| 26 | * endorse or promote products derived from this software without |
| 27 | * prior written permission. For written permission, please contact |
| 28 | * openssl-core@openssl.org. |
| 29 | * |
| 30 | * 5. Products derived from this software may not be called "OpenSSL" |
| 31 | * nor may "OpenSSL" appear in their names without prior written |
| 32 | * permission of the OpenSSL Project. |
| 33 | * |
| 34 | * 6. Redistributions of any form whatsoever must retain the following |
| 35 | * acknowledgment: |
| 36 | * "This product includes software developed by the OpenSSL Project |
| 37 | * for use in the OpenSSL Toolkit (http://www.openssl.org/)" |
| 38 | * |
| 39 | * THIS SOFTWARE IS PROVIDED BY THE OpenSSL PROJECT ``AS IS'' AND ANY |
| 40 | * EXPRESSED OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE |
| 41 | * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR |
| 42 | * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE OpenSSL PROJECT OR |
| 43 | * ITS CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, |
| 44 | * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT |
| 45 | * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; |
| 46 | * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) |
| 47 | * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, |
| 48 | * STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) |
| 49 | * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED |
| 50 | * OF THE POSSIBILITY OF SUCH DAMAGE. |
| 51 | * ==================================================================== |
| 52 | * |
| 53 | * This product includes cryptographic software written by Eric Young |
| 54 | * (eay@cryptsoft.com). This product includes software written by Tim |
| 55 | * Hudson (tjh@cryptsoft.com). |
| 56 | * |
| 57 | */ |
| 58 | |
| 59 | #include <stdio.h> |
| 60 | #include <cryptlib.h> |
| 61 | #include <openssl/objects.h> |
| 62 | #include <openssl/rand.h> |
| 63 | #include <openssl/x509.h> |
| 64 | #include <openssl/pem.h> |
| 65 | #include <openssl/x509v3.h> |
| 66 | #include <openssl/ocsp.h> |
| 67 | |
| 68 | /* Utility functions related to sending OCSP responses and extracting |
| 69 | * relevant information from the request. |
| 70 | */ |
| 71 | |
| 72 | int OCSP_request_onereq_count(OCSP_REQUEST *req) |
| 73 | { |
| 74 | return sk_OCSP_ONEREQ_num(req->tbsRequest->requestList); |
| 75 | } |
| 76 | |
| 77 | OCSP_ONEREQ *OCSP_request_onereq_get0(OCSP_REQUEST *req, int i) |
| 78 | { |
| 79 | return sk_OCSP_ONEREQ_value(req->tbsRequest->requestList, i); |
| 80 | } |
| 81 | |
| 82 | OCSP_CERTID *OCSP_onereq_get0_id(OCSP_ONEREQ *one) |
| 83 | { |
| 84 | return one->reqCert; |
| 85 | } |
| 86 | |
| 87 | int OCSP_id_get0_info(ASN1_OCTET_STRING **piNameHash, ASN1_OBJECT **pmd, |
| 88 | ASN1_OCTET_STRING **pikeyHash, |
| 89 | ASN1_INTEGER **pserial, OCSP_CERTID *cid) |
| 90 | { |
| 91 | if (!cid) return 0; |
| 92 | if (pmd) *pmd = cid->hashAlgorithm->algorithm; |
| 93 | if(piNameHash) *piNameHash = cid->issuerNameHash; |
| 94 | if (pikeyHash) *pikeyHash = cid->issuerKeyHash; |
| 95 | if (pserial) *pserial = cid->serialNumber; |
| 96 | return 1; |
| 97 | } |
| 98 | |
| 99 | int OCSP_request_is_signed(OCSP_REQUEST *req) |
| 100 | { |
| 101 | if(req->optionalSignature) return 1; |
| 102 | return 0; |
| 103 | } |
| 104 | |
| 105 | /* Create an OCSP response and encode an optional basic response */ |
| 106 | OCSP_RESPONSE *OCSP_response_create(int status, OCSP_BASICRESP *bs) |
| 107 | { |
| 108 | OCSP_RESPONSE *rsp = NULL; |
| 109 | |
| 110 | if (!(rsp = OCSP_RESPONSE_new())) goto err; |
| 111 | if (!(ASN1_ENUMERATED_set(rsp->responseStatus, status))) goto err; |
| 112 | if (!bs) return rsp; |
| 113 | if (!(rsp->responseBytes = OCSP_RESPBYTES_new())) goto err; |
| 114 | rsp->responseBytes->responseType = OBJ_nid2obj(NID_id_pkix_OCSP_basic); |
| 115 | if (!ASN1_item_pack(bs, ASN1_ITEM_rptr(OCSP_BASICRESP), &rsp->responseBytes->response)) |
| 116 | goto err; |
| 117 | return rsp; |
| 118 | err: |
| 119 | if (rsp) OCSP_RESPONSE_free(rsp); |
| 120 | return NULL; |
| 121 | } |
| 122 | |
| 123 | |
| 124 | OCSP_SINGLERESP *OCSP_basic_add1_status(OCSP_BASICRESP *rsp, |
| 125 | OCSP_CERTID *cid, |
| 126 | int status, int reason, |
| 127 | ASN1_TIME *revtime, |
| 128 | ASN1_TIME *thisupd, ASN1_TIME *nextupd) |
| 129 | { |
| 130 | OCSP_SINGLERESP *single = NULL; |
| 131 | OCSP_CERTSTATUS *cs; |
| 132 | OCSP_REVOKEDINFO *ri; |
| 133 | |
| 134 | if(!rsp->tbsResponseData->responses && |
| 135 | !(rsp->tbsResponseData->responses = sk_OCSP_SINGLERESP_new_null())) |
| 136 | goto err; |
| 137 | |
| 138 | if (!(single = OCSP_SINGLERESP_new())) |
| 139 | goto err; |
| 140 | |
| 141 | |
| 142 | |
| 143 | if (!ASN1_TIME_to_generalizedtime(thisupd, &single->thisUpdate)) |
| 144 | goto err; |
| 145 | if (nextupd && |
| 146 | !ASN1_TIME_to_generalizedtime(nextupd, &single->nextUpdate)) |
| 147 | goto err; |
| 148 | |
| 149 | OCSP_CERTID_free(single->certId); |
| 150 | |
| 151 | if(!(single->certId = OCSP_CERTID_dup(cid))) |
| 152 | goto err; |
| 153 | |
| 154 | cs = single->certStatus; |
| 155 | switch(cs->type = status) |
| 156 | { |
| 157 | case V_OCSP_CERTSTATUS_REVOKED: |
| 158 | if (!revtime) |
| 159 | { |
| 160 | OCSPerr(OCSP_F_OCSP_BASIC_ADD1_STATUS,OCSP_R_NO_REVOKED_TIME); |
| 161 | goto err; |
| 162 | } |
| 163 | if (!(cs->value.revoked = ri = OCSP_REVOKEDINFO_new())) goto err; |
| 164 | if (!ASN1_TIME_to_generalizedtime(revtime, &ri->revocationTime)) |
| 165 | goto err; |
| 166 | if (reason != OCSP_REVOKED_STATUS_NOSTATUS) |
| 167 | { |
| 168 | if (!(ri->revocationReason = ASN1_ENUMERATED_new())) |
| 169 | goto err; |
| 170 | if (!(ASN1_ENUMERATED_set(ri->revocationReason, |
| 171 | reason))) |
| 172 | goto err; |
| 173 | } |
| 174 | break; |
| 175 | |
| 176 | case V_OCSP_CERTSTATUS_GOOD: |
| 177 | cs->value.good = ASN1_NULL_new(); |
| 178 | break; |
| 179 | |
| 180 | case V_OCSP_CERTSTATUS_UNKNOWN: |
| 181 | cs->value.unknown = ASN1_NULL_new(); |
| 182 | break; |
| 183 | |
| 184 | default: |
| 185 | goto err; |
| 186 | |
| 187 | } |
| 188 | if (!(sk_OCSP_SINGLERESP_push(rsp->tbsResponseData->responses, single))) |
| 189 | goto err; |
| 190 | return single; |
| 191 | err: |
| 192 | OCSP_SINGLERESP_free(single); |
| 193 | return NULL; |
| 194 | } |
| 195 | |
| 196 | /* Add a certificate to an OCSP request */ |
| 197 | |
| 198 | int OCSP_basic_add1_cert(OCSP_BASICRESP *resp, X509 *cert) |
| 199 | { |
| 200 | if (!resp->certs && !(resp->certs = sk_X509_new_null())) |
| 201 | return 0; |
| 202 | |
| 203 | if(!sk_X509_push(resp->certs, cert)) return 0; |
| 204 | CRYPTO_add(&cert->references, 1, CRYPTO_LOCK_X509); |
| 205 | return 1; |
| 206 | } |
| 207 | |
| 208 | int OCSP_basic_sign(OCSP_BASICRESP *brsp, |
| 209 | X509 *signer, EVP_PKEY *key, const EVP_MD *dgst, |
| 210 | STACK_OF(X509) *certs, unsigned long flags) |
| 211 | { |
| 212 | int i; |
| 213 | OCSP_RESPID *rid; |
| 214 | |
| 215 | if (!X509_check_private_key(signer, key)) |
| 216 | { |
| 217 | OCSPerr(OCSP_F_OCSP_BASIC_SIGN, OCSP_R_PRIVATE_KEY_DOES_NOT_MATCH_CERTIFICATE); |
| 218 | goto err; |
| 219 | } |
| 220 | |
| 221 | if(!(flags & OCSP_NOCERTS)) |
| 222 | { |
| 223 | if(!OCSP_basic_add1_cert(brsp, signer)) |
| 224 | goto err; |
| 225 | for (i = 0; i < sk_X509_num(certs); i++) |
| 226 | { |
| 227 | X509 *tmpcert = sk_X509_value(certs, i); |
| 228 | if(!OCSP_basic_add1_cert(brsp, tmpcert)) |
| 229 | goto err; |
| 230 | } |
| 231 | } |
| 232 | |
| 233 | rid = brsp->tbsResponseData->responderId; |
| 234 | if (flags & OCSP_RESPID_KEY) |
| 235 | { |
| 236 | unsigned char md[SHA_DIGEST_LENGTH]; |
| 237 | X509_pubkey_digest(signer, EVP_sha1(), md, NULL); |
| 238 | if (!(rid->value.byKey = ASN1_OCTET_STRING_new())) |
| 239 | goto err; |
| 240 | if (!(ASN1_OCTET_STRING_set(rid->value.byKey, md, SHA_DIGEST_LENGTH))) |
| 241 | goto err; |
| 242 | rid->type = V_OCSP_RESPID_KEY; |
| 243 | } |
| 244 | else |
| 245 | { |
| 246 | if (!X509_NAME_set(&rid->value.byName, |
| 247 | X509_get_subject_name(signer))) |
| 248 | goto err; |
| 249 | rid->type = V_OCSP_RESPID_NAME; |
| 250 | } |
| 251 | |
| 252 | if (!(flags & OCSP_NOTIME) && |
| 253 | !X509_gmtime_adj(brsp->tbsResponseData->producedAt, 0)) |
| 254 | goto err; |
| 255 | |
| 256 | /* Right now, I think that not doing double hashing is the right |
| 257 | thing. -- Richard Levitte */ |
| 258 | |
| 259 | if (!OCSP_BASICRESP_sign(brsp, key, dgst, 0)) goto err; |
| 260 | |
| 261 | return 1; |
| 262 | err: |
| 263 | return 0; |
| 264 | } |