--- /dev/null Thu Jan 01 00:00:00 1970 +0000
+++ b/ssl/libcrypto/src/crypto/ocsp/ocsp_cl.c Tue Feb 02 02:01:42 2010 +0200
@@ -0,0 +1,372 @@
+/* ocsp_cl.c */
+/* Written by Tom Titchener <Tom_Titchener@groove.net> for the OpenSSL
+ * project. */
+
+/* History:
+ This file was transfered to Richard Levitte from CertCo by Kathy
+ Weinhold in mid-spring 2000 to be included in OpenSSL or released
+ as a patch kit. */
+
+/* ====================================================================
+ * Copyright (c) 1998-2000 The OpenSSL Project. All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ *
+ * 1. Redistributions of source code must retain the above copyright
+ * notice, this list of conditions and the following disclaimer.
+ *
+ * 2. Redistributions in binary form must reproduce the above copyright
+ * notice, this list of conditions and the following disclaimer in
+ * the documentation and/or other materials provided with the
+ * distribution.
+ *
+ * 3. All advertising materials mentioning features or use of this
+ * software must display the following acknowledgment:
+ * "This product includes software developed by the OpenSSL Project
+ * for use in the OpenSSL Toolkit. (http://www.openssl.org/)"
+ *
+ * 4. The names "OpenSSL Toolkit" and "OpenSSL Project" must not be used to
+ * endorse or promote products derived from this software without
+ * prior written permission. For written permission, please contact
+ * openssl-core@openssl.org.
+ *
+ * 5. Products derived from this software may not be called "OpenSSL"
+ * nor may "OpenSSL" appear in their names without prior written
+ * permission of the OpenSSL Project.
+ *
+ * 6. Redistributions of any form whatsoever must retain the following
+ * acknowledgment:
+ * "This product includes software developed by the OpenSSL Project
+ * for use in the OpenSSL Toolkit (http://www.openssl.org/)"
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE OpenSSL PROJECT ``AS IS'' AND ANY
+ * EXPRESSED OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
+ * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE OpenSSL PROJECT OR
+ * ITS CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
+ * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
+ * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
+ * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+ * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT,
+ * STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
+ * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED
+ * OF THE POSSIBILITY OF SUCH DAMAGE.
+ * ====================================================================
+ *
+ * This product includes cryptographic software written by Eric Young
+ * (eay@cryptsoft.com). This product includes software written by Tim
+ * Hudson (tjh@cryptsoft.com).
+ *
+ */
+
+#include <stdio.h>
+#include <time.h>
+#include <cryptlib.h>
+#include <openssl/objects.h>
+#include <openssl/rand.h>
+#include <openssl/x509.h>
+#include <openssl/pem.h>
+#include <openssl/x509v3.h>
+#include <openssl/ocsp.h>
+
+/* Utility functions related to sending OCSP requests and extracting
+ * relevant information from the response.
+ */
+
+/* Add an OCSP_CERTID to an OCSP request. Return new OCSP_ONEREQ
+ * pointer: useful if we want to add extensions.
+ */
+
+EXPORT_C OCSP_ONEREQ *OCSP_request_add0_id(OCSP_REQUEST *req, OCSP_CERTID *cid)
+ {
+ OCSP_ONEREQ *one = NULL;
+
+ if (!(one = OCSP_ONEREQ_new())) goto err;
+ if (one->reqCert) OCSP_CERTID_free(one->reqCert);
+ one->reqCert = cid;
+ if (req &&
+ !sk_OCSP_ONEREQ_push(req->tbsRequest->requestList, one))
+ goto err;
+ return one;
+err:
+ OCSP_ONEREQ_free(one);
+ return NULL;
+ }
+
+/* Set requestorName from an X509_NAME structure */
+
+EXPORT_C int OCSP_request_set1_name(OCSP_REQUEST *req, X509_NAME *nm)
+ {
+ GENERAL_NAME *gen;
+ gen = GENERAL_NAME_new();
+ if (gen == NULL)
+ return 0;
+ if (!X509_NAME_set(&gen->d.directoryName, nm))
+ {
+ GENERAL_NAME_free(gen);
+ return 0;
+ }
+ gen->type = GEN_DIRNAME;
+ if (req->tbsRequest->requestorName)
+ GENERAL_NAME_free(req->tbsRequest->requestorName);
+ req->tbsRequest->requestorName = gen;
+ return 1;
+ }
+
+
+/* Add a certificate to an OCSP request */
+
+EXPORT_C int OCSP_request_add1_cert(OCSP_REQUEST *req, X509 *cert)
+ {
+ OCSP_SIGNATURE *sig;
+ if (!req->optionalSignature)
+ req->optionalSignature = OCSP_SIGNATURE_new();
+ sig = req->optionalSignature;
+ if (!sig) return 0;
+ if (!cert) return 1;
+ if (!sig->certs && !(sig->certs = sk_X509_new_null()))
+ return 0;
+
+ if(!sk_X509_push(sig->certs, cert)) return 0;
+ CRYPTO_add(&cert->references, 1, CRYPTO_LOCK_X509);
+ return 1;
+ }
+
+/* Sign an OCSP request set the requestorName to the subjec
+ * name of an optional signers certificate and include one
+ * or more optional certificates in the request. Behaves
+ * like PKCS7_sign().
+ */
+
+EXPORT_C int OCSP_request_sign(OCSP_REQUEST *req,
+ X509 *signer,
+ EVP_PKEY *key,
+ const EVP_MD *dgst,
+ STACK_OF(X509) *certs,
+ unsigned long flags)
+ {
+ int i;
+ OCSP_SIGNATURE *sig;
+ X509 *x;
+
+ if (!OCSP_request_set1_name(req, X509_get_subject_name(signer)))
+ goto err;
+
+ if (!(req->optionalSignature = sig = OCSP_SIGNATURE_new())) goto err;
+ if (!dgst) dgst = EVP_sha1();
+ if (key)
+ {
+ if (!X509_check_private_key(signer, key))
+ {
+ OCSPerr(OCSP_F_OCSP_REQUEST_SIGN, OCSP_R_PRIVATE_KEY_DOES_NOT_MATCH_CERTIFICATE);
+ goto err;
+ }
+ if (!OCSP_REQUEST_sign(req, key, dgst)) goto err;
+ }
+
+ if (!(flags & OCSP_NOCERTS))
+ {
+ if(!OCSP_request_add1_cert(req, signer)) goto err;
+ for (i = 0; i < sk_X509_num(certs); i++)
+ {
+ x = sk_X509_value(certs, i);
+ if (!OCSP_request_add1_cert(req, x)) goto err;
+ }
+ }
+
+ return 1;
+err:
+ OCSP_SIGNATURE_free(req->optionalSignature);
+ req->optionalSignature = NULL;
+ return 0;
+ }
+
+/* Get response status */
+
+EXPORT_C int OCSP_response_status(OCSP_RESPONSE *resp)
+ {
+ return ASN1_ENUMERATED_get(resp->responseStatus);
+ }
+
+/* Extract basic response from OCSP_RESPONSE or NULL if
+ * no basic response present.
+ */
+
+
+EXPORT_C OCSP_BASICRESP *OCSP_response_get1_basic(OCSP_RESPONSE *resp)
+ {
+ OCSP_RESPBYTES *rb;
+ rb = resp->responseBytes;
+ if (!rb)
+ {
+ OCSPerr(OCSP_F_OCSP_RESPONSE_GET1_BASIC, OCSP_R_NO_RESPONSE_DATA);
+ return NULL;
+ }
+ if (OBJ_obj2nid(rb->responseType) != NID_id_pkix_OCSP_basic)
+ {
+ OCSPerr(OCSP_F_OCSP_RESPONSE_GET1_BASIC, OCSP_R_NOT_BASIC_RESPONSE);
+ return NULL;
+ }
+
+ return ASN1_item_unpack(rb->response, ASN1_ITEM_rptr(OCSP_BASICRESP));
+ }
+
+/* Return number of OCSP_SINGLERESP reponses present in
+ * a basic response.
+ */
+
+EXPORT_C int OCSP_resp_count(OCSP_BASICRESP *bs)
+ {
+ if (!bs) return -1;
+ return sk_OCSP_SINGLERESP_num(bs->tbsResponseData->responses);
+ }
+
+/* Extract an OCSP_SINGLERESP response with a given index */
+
+EXPORT_C OCSP_SINGLERESP *OCSP_resp_get0(OCSP_BASICRESP *bs, int idx)
+ {
+ if (!bs) return NULL;
+ return sk_OCSP_SINGLERESP_value(bs->tbsResponseData->responses, idx);
+ }
+
+/* Look single response matching a given certificate ID */
+
+EXPORT_C int OCSP_resp_find(OCSP_BASICRESP *bs, OCSP_CERTID *id, int last)
+ {
+ int i;
+ STACK_OF(OCSP_SINGLERESP) *sresp;
+ OCSP_SINGLERESP *single;
+ if (!bs) return -1;
+ if (last < 0) last = 0;
+ else last++;
+ sresp = bs->tbsResponseData->responses;
+ for (i = last; i < sk_OCSP_SINGLERESP_num(sresp); i++)
+ {
+ single = sk_OCSP_SINGLERESP_value(sresp, i);
+ if (!OCSP_id_cmp(id, single->certId)) return i;
+ }
+ return -1;
+ }
+
+/* Extract status information from an OCSP_SINGLERESP structure.
+ * Note: the revtime and reason values are only set if the
+ * certificate status is revoked. Returns numerical value of
+ * status.
+ */
+
+EXPORT_C int OCSP_single_get0_status(OCSP_SINGLERESP *single, int *reason,
+ ASN1_GENERALIZEDTIME **revtime,
+ ASN1_GENERALIZEDTIME **thisupd,
+ ASN1_GENERALIZEDTIME **nextupd)
+ {
+ int ret;
+ OCSP_CERTSTATUS *cst;
+ if(!single) return -1;
+ cst = single->certStatus;
+ ret = cst->type;
+ if (ret == V_OCSP_CERTSTATUS_REVOKED)
+ {
+ OCSP_REVOKEDINFO *rev = cst->value.revoked;
+ if (revtime) *revtime = rev->revocationTime;
+ if (reason)
+ {
+ if(rev->revocationReason)
+ *reason = ASN1_ENUMERATED_get(rev->revocationReason);
+ else *reason = -1;
+ }
+ }
+ if(thisupd) *thisupd = single->thisUpdate;
+ if(nextupd) *nextupd = single->nextUpdate;
+ return ret;
+ }
+
+/* This function combines the previous ones: look up a certificate ID and
+ * if found extract status information. Return 0 is successful.
+ */
+
+EXPORT_C int OCSP_resp_find_status(OCSP_BASICRESP *bs, OCSP_CERTID *id, int *status,
+ int *reason,
+ ASN1_GENERALIZEDTIME **revtime,
+ ASN1_GENERALIZEDTIME **thisupd,
+ ASN1_GENERALIZEDTIME **nextupd)
+ {
+ int i;
+ OCSP_SINGLERESP *single;
+ i = OCSP_resp_find(bs, id, -1);
+ /* Maybe check for multiple responses and give an error? */
+ if(i < 0) return 0;
+ single = OCSP_resp_get0(bs, i);
+ i = OCSP_single_get0_status(single, reason, revtime, thisupd, nextupd);
+ if(status) *status = i;
+ return 1;
+ }
+
+/* Check validity of thisUpdate and nextUpdate fields. It is possible that the request will
+ * take a few seconds to process and/or the time wont be totally accurate. Therefore to avoid
+ * rejecting otherwise valid time we allow the times to be within 'nsec' of the current time.
+ * Also to avoid accepting very old responses without a nextUpdate field an optional maxage
+ * parameter specifies the maximum age the thisUpdate field can be.
+ */
+
+EXPORT_C int OCSP_check_validity(ASN1_GENERALIZEDTIME *thisupd, ASN1_GENERALIZEDTIME *nextupd, long nsec, long maxsec)
+ {
+ int ret = 1;
+ time_t t_now, t_tmp;
+ time(&t_now);
+ /* Check thisUpdate is valid and not more than nsec in the future */
+ if (!ASN1_GENERALIZEDTIME_check(thisupd))
+ {
+ OCSPerr(OCSP_F_OCSP_CHECK_VALIDITY, OCSP_R_ERROR_IN_THISUPDATE_FIELD);
+ ret = 0;
+ }
+ else
+ {
+ t_tmp = t_now + nsec;
+ if (X509_cmp_time(thisupd, &t_tmp) > 0)
+ {
+ OCSPerr(OCSP_F_OCSP_CHECK_VALIDITY, OCSP_R_STATUS_NOT_YET_VALID);
+ ret = 0;
+ }
+
+ /* If maxsec specified check thisUpdate is not more than maxsec in the past */
+ if (maxsec >= 0)
+ {
+ t_tmp = t_now - maxsec;
+ if (X509_cmp_time(thisupd, &t_tmp) < 0)
+ {
+ OCSPerr(OCSP_F_OCSP_CHECK_VALIDITY, OCSP_R_STATUS_TOO_OLD);
+ ret = 0;
+ }
+ }
+ }
+
+
+ if (!nextupd) return ret;
+
+ /* Check nextUpdate is valid and not more than nsec in the past */
+ if (!ASN1_GENERALIZEDTIME_check(nextupd))
+ {
+ OCSPerr(OCSP_F_OCSP_CHECK_VALIDITY, OCSP_R_ERROR_IN_NEXTUPDATE_FIELD);
+ ret = 0;
+ }
+ else
+ {
+ t_tmp = t_now - nsec;
+ if (X509_cmp_time(nextupd, &t_tmp) < 0)
+ {
+ OCSPerr(OCSP_F_OCSP_CHECK_VALIDITY, OCSP_R_STATUS_EXPIRED);
+ ret = 0;
+ }
+ }
+
+ /* Also don't allow nextUpdate to precede thisUpdate */
+ if (ASN1_STRING_cmp(nextupd, thisupd) < 0)
+ {
+ OCSPerr(OCSP_F_OCSP_CHECK_VALIDITY, OCSP_R_NEXTUPDATE_BEFORE_THISUPDATE);
+ ret = 0;
+ }
+
+ return ret;
+ }