Add set of OCSP client functions. All experimental

and subject to addition, modifcation or deletion.

Add two OCSP nonce utility functions.

Fix typo in status code name.

1 files changed, 291 insertions, 0 deletions

diff --git a/crypto/ocsp/ocsp_cl.c b/crypto/ocsp/ocsp_cl.c
new file mode 100644
index 0000000000..3e73e3bb17
--- /dev/null
+++ b/crypto/ocsp/ocsp_cl.c
@@ -0,0 +1,291 @@
+/* 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 <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.
+ */
+
+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 */
+
+int OCSP_request_set1_name(OCSP_REQUEST *req, X509_NAME *nm)
+	{
+	GENERAL_NAME *gen;
+	gen = GENERAL_NAME_new();
+	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 */
+
+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().
+ */
+
+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 (signer &&
+		!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 && !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 */
+
+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.
+ */
+ 
+
+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, &OCSP_BASICRESP_it);
+	}
+
+/* Return number of OCSP_SINGLERESP reponses present in
+ * a basic response.
+ */
+
+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 */
+
+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 */
+
+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.
+ */
+
+int OCSP_single_get0_status(OCSP_SINGLERESP *single, int *reason,
+				ASN1_GENERALIZEDTIME **revtime,
+				ASN1_GENERALIZEDTIME **thisupd,
+				ASN1_GENERALIZEDTIME **nextupd)
+	{
+	int ret;
+	OCSP_CERTSTATUS *cst = single->certStatus;
+	if(!single) return -1;
+	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 a certificate ID and
+ * if found extract status information. Return 0 is successful.
+ */
+
+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(reason) *reason = i;
+	return 1;
+	}