text: /* $OpenBSD: ocsp.h,v 1.6 2014/06/12 15:49:30 deraadt Exp $ */
  /* 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).
   *
   */
  
  #ifndef HEADER_OCSP_H
  #define HEADER_OCSP_H
  
  #include <openssl/ossl_typ.h>
  #include <openssl/x509.h>
  #include <openssl/x509v3.h>
  #include <openssl/safestack.h>
  
  #ifdef  __cplusplus
  extern "C" {
  #endif
  
  /* Various flags and values */
  
  #define OCSP_DEFAULT_NONCE_LENGTH	16
  
  #define OCSP_NOCERTS			0x1
  #define OCSP_NOINTERN			0x2
  #define OCSP_NOSIGS			0x4
  #define OCSP_NOCHAIN			0x8
  #define OCSP_NOVERIFY			0x10
  #define OCSP_NOEXPLICIT			0x20
  #define OCSP_NOCASIGN			0x40
  #define OCSP_NODELEGATED		0x80
  #define OCSP_NOCHECKS			0x100
  #define OCSP_TRUSTOTHER			0x200
  #define OCSP_RESPID_KEY			0x400
  #define OCSP_NOTIME			0x800
  
  /*   CertID ::= SEQUENCE {
   *       hashAlgorithm            AlgorithmIdentifier,
   *       issuerNameHash     OCTET STRING, -- Hash of Issuer's DN
   *       issuerKeyHash      OCTET STRING, -- Hash of Issuers public key (excluding the tag & length fields)
   *       serialNumber       CertificateSerialNumber }
   */
  typedef struct ocsp_cert_id_st {
  	X509_ALGOR *hashAlgorithm;
  	ASN1_OCTET_STRING *issuerNameHash;
  	ASN1_OCTET_STRING *issuerKeyHash;
  	ASN1_INTEGER *serialNumber;
  } OCSP_CERTID;
  
  DECLARE_STACK_OF(OCSP_CERTID)
  
  /*   Request ::=     SEQUENCE {
   *       reqCert                    CertID,
   *       singleRequestExtensions    [0] EXPLICIT Extensions OPTIONAL }
   */
  typedef struct ocsp_one_request_st {
  	OCSP_CERTID *reqCert;
  	STACK_OF(X509_EXTENSION) *singleRequestExtensions;
  } OCSP_ONEREQ;
  
  DECLARE_STACK_OF(OCSP_ONEREQ)
  DECLARE_ASN1_SET_OF(OCSP_ONEREQ)
  
  
  /*   TBSRequest      ::=     SEQUENCE {
   *       version             [0] EXPLICIT Version DEFAULT v1,
   *       requestorName       [1] EXPLICIT GeneralName OPTIONAL,
   *       requestList             SEQUENCE OF Request,
   *       requestExtensions   [2] EXPLICIT Extensions OPTIONAL }
   */
  typedef struct ocsp_req_info_st {
  	ASN1_INTEGER *version;
  	GENERAL_NAME *requestorName;
  	STACK_OF(OCSP_ONEREQ) *requestList;
  	STACK_OF(X509_EXTENSION) *requestExtensions;
  } OCSP_REQINFO;
  
  /*   Signature       ::=     SEQUENCE {
   *       signatureAlgorithm   AlgorithmIdentifier,
   *       signature            BIT STRING,
   *       certs                [0] EXPLICIT SEQUENCE OF Certificate OPTIONAL }
   */
  typedef struct ocsp_signature_st {
  	X509_ALGOR *signatureAlgorithm;
  	ASN1_BIT_STRING *signature;
  	STACK_OF(X509) *certs;
  } OCSP_SIGNATURE;
  
  /*   OCSPRequest     ::=     SEQUENCE {
   *       tbsRequest                  TBSRequest,
   *       optionalSignature   [0]     EXPLICIT Signature OPTIONAL }
   */
  typedef struct ocsp_request_st {
  	OCSP_REQINFO *tbsRequest;
  	OCSP_SIGNATURE *optionalSignature; /* OPTIONAL */
  } OCSP_REQUEST;
  
  /*   OCSPResponseStatus ::= ENUMERATED {
   *       successful            (0),      --Response has valid confirmations
   *       malformedRequest      (1),      --Illegal confirmation request
   *       internalError         (2),      --Internal error in issuer
   *       tryLater              (3),      --Try again later
   *                                       --(4) is not used
   *       sigRequired           (5),      --Must sign the request
   *       unauthorized          (6)       --Request unauthorized
   *   }
   */
  #define OCSP_RESPONSE_STATUS_SUCCESSFUL		0
  #define OCSP_RESPONSE_STATUS_MALFORMEDREQUEST	1
  #define OCSP_RESPONSE_STATUS_INTERNALERROR	2
  #define OCSP_RESPONSE_STATUS_TRYLATER		3
  #define OCSP_RESPONSE_STATUS_SIGREQUIRED	5
  #define OCSP_RESPONSE_STATUS_UNAUTHORIZED	6
  
  /*   ResponseBytes ::=       SEQUENCE {
   *       responseType   OBJECT IDENTIFIER,
   *       response       OCTET STRING }
   */
  typedef struct ocsp_resp_bytes_st {
  	ASN1_OBJECT *responseType;
  	ASN1_OCTET_STRING *response;
  } OCSP_RESPBYTES;
  
  /*   OCSPResponse ::= SEQUENCE {
   *      responseStatus         OCSPResponseStatus,
   *      responseBytes          [0] EXPLICIT ResponseBytes OPTIONAL }
   */
  struct ocsp_response_st {
  	ASN1_ENUMERATED *responseStatus;
  	OCSP_RESPBYTES  *responseBytes;
  };
  
  /*   ResponderID ::= CHOICE {
   *      byName   [1] Name,
   *      byKey    [2] KeyHash }
   */
  #define V_OCSP_RESPID_NAME 0
  #define V_OCSP_RESPID_KEY  1
  struct ocsp_responder_id_st {
  	int type;
  	union {
  		X509_NAME* byName;
  		ASN1_OCTET_STRING *byKey;
  	} value;
  };
  
  DECLARE_STACK_OF(OCSP_RESPID)
  DECLARE_ASN1_FUNCTIONS(OCSP_RESPID)
  
  /*   KeyHash ::= OCTET STRING --SHA-1 hash of responder's public key
   *                            --(excluding the tag and length fields)
   */
  
  /*   RevokedInfo ::= SEQUENCE {
   *       revocationTime              GeneralizedTime,
   *       revocationReason    [0]     EXPLICIT CRLReason OPTIONAL }
   */
  typedef struct ocsp_revoked_info_st {
  	ASN1_GENERALIZEDTIME *revocationTime;
  	ASN1_ENUMERATED *revocationReason;
  } OCSP_REVOKEDINFO;
  
  /*   CertStatus ::= CHOICE {
   *       good                [0]     IMPLICIT NULL,
   *       revoked             [1]     IMPLICIT RevokedInfo,
   *       unknown             [2]     IMPLICIT UnknownInfo }
   */
  #define V_OCSP_CERTSTATUS_GOOD    0
  #define V_OCSP_CERTSTATUS_REVOKED 1
  #define V_OCSP_CERTSTATUS_UNKNOWN 2
  typedef struct ocsp_cert_status_st {
  	int type;
  	union {
  		ASN1_NULL *good;
  		OCSP_REVOKEDINFO *revoked;
  		ASN1_NULL *unknown;
  	} value;
  } OCSP_CERTSTATUS;
  
  /*   SingleResponse ::= SEQUENCE {
   *      certID                       CertID,
   *      certStatus                   CertStatus,
   *      thisUpdate                   GeneralizedTime,
   *      nextUpdate           [0]     EXPLICIT GeneralizedTime OPTIONAL,
   *      singleExtensions     [1]     EXPLICIT Extensions OPTIONAL }
   */
  typedef struct ocsp_single_response_st {
  	OCSP_CERTID *certId;
  	OCSP_CERTSTATUS *certStatus;
  	ASN1_GENERALIZEDTIME *thisUpdate;
  	ASN1_GENERALIZEDTIME *nextUpdate;
  	STACK_OF(X509_EXTENSION) *singleExtensions;
  } OCSP_SINGLERESP;
  
  DECLARE_STACK_OF(OCSP_SINGLERESP)
  DECLARE_ASN1_SET_OF(OCSP_SINGLERESP)
  
  /*   ResponseData ::= SEQUENCE {
   *      version              [0] EXPLICIT Version DEFAULT v1,
   *      responderID              ResponderID,
   *      producedAt               GeneralizedTime,
   *      responses                SEQUENCE OF SingleResponse,
   *      responseExtensions   [1] EXPLICIT Extensions OPTIONAL }
   */
  typedef struct ocsp_response_data_st {
  	ASN1_INTEGER *version;
  	OCSP_RESPID  *responderId;
  	ASN1_GENERALIZEDTIME *producedAt;
  	STACK_OF(OCSP_SINGLERESP) *responses;
  	STACK_OF(X509_EXTENSION) *responseExtensions;
  } OCSP_RESPDATA;
  
  /*   BasicOCSPResponse       ::= SEQUENCE {
   *      tbsResponseData      ResponseData,
   *      signatureAlgorithm   AlgorithmIdentifier,
   *      signature            BIT STRING,
   *      certs                [0] EXPLICIT SEQUENCE OF Certificate OPTIONAL }
   */
    /* Note 1:
       The value for "signature" is specified in the OCSP rfc2560 as follows:
       "The value for the signature SHALL be computed on the hash of the DER
       encoding ResponseData."  This means that you must hash the DER-encoded
       tbsResponseData, and then run it through a crypto-signing function, which
       will (at least w/RSA) do a hash-'n'-private-encrypt operation.  This seems
       a bit odd, but that's the spec.  Also note that the data structures do not
       leave anywhere to independently specify the algorithm used for the initial
       hash. So, we look at the signature-specification algorithm, and try to do
       something intelligent.	-- Kathy Weinhold, CertCo */
    /* Note 2:
       It seems that the mentioned passage from RFC 2560 (section 4.2.1) is open
       for interpretation.  I've done tests against another responder, and found
       that it doesn't do the double hashing that the RFC seems to say one
       should.  Therefore, all relevant functions take a flag saying which
       variant should be used.	-- Richard Levitte, OpenSSL team and CeloCom */
  typedef struct ocsp_basic_response_st {
  	OCSP_RESPDATA *tbsResponseData;
  	X509_ALGOR *signatureAlgorithm;
  	ASN1_BIT_STRING *signature;
  	STACK_OF(X509) *certs;
  } OCSP_BASICRESP;
  
  /*
   *   CRLReason ::= ENUMERATED {
   *        unspecified             (0),
   *        keyCompromise           (1),
   *        cACompromise            (2),
   *        affiliationChanged      (3),
   *        superseded              (4),
   *        cessationOfOperation    (5),
   *        certificateHold         (6),
   *        removeFromCRL           (8) }
   */
  #define OCSP_REVOKED_STATUS_NOSTATUS			-1
  #define OCSP_REVOKED_STATUS_UNSPECIFIED			0
  #define OCSP_REVOKED_STATUS_KEYCOMPROMISE		1
  #define OCSP_REVOKED_STATUS_CACOMPROMISE		2
  #define OCSP_REVOKED_STATUS_AFFILIATIONCHANGED		3
  #define OCSP_REVOKED_STATUS_SUPERSEDED			4
  #define OCSP_REVOKED_STATUS_CESSATIONOFOPERATION	5
  #define OCSP_REVOKED_STATUS_CERTIFICATEHOLD		6
  #define OCSP_REVOKED_STATUS_REMOVEFROMCRL		8
  
  /* CrlID ::= SEQUENCE {
   *     crlUrl               [0]     EXPLICIT IA5String OPTIONAL,
   *     crlNum               [1]     EXPLICIT INTEGER OPTIONAL,
   *     crlTime              [2]     EXPLICIT GeneralizedTime OPTIONAL }
   */
  typedef struct ocsp_crl_id_st {
  	ASN1_IA5STRING *crlUrl;
  	ASN1_INTEGER *crlNum;
  	ASN1_GENERALIZEDTIME *crlTime;
  } OCSP_CRLID;
  
  /* ServiceLocator ::= SEQUENCE {
   *      issuer    Name,
   *      locator   AuthorityInfoAccessSyntax OPTIONAL }
   */
  typedef struct ocsp_service_locator_st {
  	X509_NAME* issuer;
  	STACK_OF(ACCESS_DESCRIPTION) *locator;
  } OCSP_SERVICELOC;
  
  #define PEM_STRING_OCSP_REQUEST	"OCSP REQUEST"
  #define PEM_STRING_OCSP_RESPONSE "OCSP RESPONSE"
  
  #define d2i_OCSP_REQUEST_bio(bp,p) \
      ASN1_d2i_bio_of(OCSP_REQUEST,OCSP_REQUEST_new,d2i_OCSP_REQUEST,bp,p)
  
  #define d2i_OCSP_RESPONSE_bio(bp,p) \
      ASN1_d2i_bio_of(OCSP_RESPONSE,OCSP_RESPONSE_new,d2i_OCSP_RESPONSE,bp,p)
  
  #define	PEM_read_bio_OCSP_REQUEST(bp,x,cb) \
      (OCSP_REQUEST *)PEM_ASN1_read_bio((char *(*)())d2i_OCSP_REQUEST, \
  	PEM_STRING_OCSP_REQUEST,bp,(char **)x,cb,NULL)
  
  #define	PEM_read_bio_OCSP_RESPONSE(bp,x,cb) \
      (OCSP_RESPONSE *)PEM_ASN1_read_bio((char *(*)())d2i_OCSP_RESPONSE, \
  	PEM_STRING_OCSP_RESPONSE,bp,(char **)x,cb,NULL)
  
  #define PEM_write_bio_OCSP_REQUEST(bp,o) \
      PEM_ASN1_write_bio((int (*)())i2d_OCSP_REQUEST,PEM_STRING_OCSP_REQUEST,\
  	bp,(char *)o, NULL,NULL,0,NULL,NULL)
  
  #define PEM_write_bio_OCSP_RESPONSE(bp,o) \
      PEM_ASN1_write_bio((int (*)())i2d_OCSP_RESPONSE,PEM_STRING_OCSP_RESPONSE,\
  	bp,(char *)o, NULL,NULL,0,NULL,NULL)
  
  #define i2d_OCSP_RESPONSE_bio(bp,o) \
      ASN1_i2d_bio_of(OCSP_RESPONSE,i2d_OCSP_RESPONSE,bp,o)
  
  #define i2d_OCSP_REQUEST_bio(bp,o) \
      ASN1_i2d_bio_of(OCSP_REQUEST,i2d_OCSP_REQUEST,bp,o)
  
  #define OCSP_REQUEST_sign(o,pkey,md) \
      ASN1_item_sign(ASN1_ITEM_rptr(OCSP_REQINFO), \
  	o->optionalSignature->signatureAlgorithm,NULL, \
  	o->optionalSignature->signature,o->tbsRequest,pkey,md)
  
  #define OCSP_BASICRESP_sign(o,pkey,md,d) \
      ASN1_item_sign(ASN1_ITEM_rptr(OCSP_RESPDATA),o->signatureAlgorithm,NULL, \
  	o->signature,o->tbsResponseData,pkey,md)
  
  #define OCSP_REQUEST_verify(a,r) \
      ASN1_item_verify(ASN1_ITEM_rptr(OCSP_REQINFO), \
  	a->optionalSignature->signatureAlgorithm, \
  	a->optionalSignature->signature,a->tbsRequest,r)
  
  #define OCSP_BASICRESP_verify(a,r,d) \
      ASN1_item_verify(ASN1_ITEM_rptr(OCSP_RESPDATA), \
  	a->signatureAlgorithm,a->signature,a->tbsResponseData,r)
  
  #define ASN1_BIT_STRING_digest(data,type,md,len) \
      ASN1_item_digest(ASN1_ITEM_rptr(ASN1_BIT_STRING),type,data,md,len)
  
  #define OCSP_CERTSTATUS_dup(cs)\
      (OCSP_CERTSTATUS*)ASN1_dup((int(*)())i2d_OCSP_CERTSTATUS,\
  	(char *(*)())d2i_OCSP_CERTSTATUS,(char *)(cs))
  
  OCSP_CERTID *OCSP_CERTID_dup(OCSP_CERTID *id);
  
  OCSP_RESPONSE *OCSP_sendreq_bio(BIO *b, char *path, OCSP_REQUEST *req);
  OCSP_REQ_CTX *OCSP_sendreq_new(BIO *io, char *path, OCSP_REQUEST *req,
  	    int maxline);
  int	OCSP_sendreq_nbio(OCSP_RESPONSE **presp, OCSP_REQ_CTX *rctx);
  void	OCSP_REQ_CTX_free(OCSP_REQ_CTX *rctx);
  int	OCSP_REQ_CTX_set1_req(OCSP_REQ_CTX *rctx, OCSP_REQUEST *req);
  int	OCSP_REQ_CTX_add1_header(OCSP_REQ_CTX *rctx, const char *name,
  	    const char *value);
  
  OCSP_CERTID *OCSP_cert_to_id(const EVP_MD *dgst, X509 *subject, X509 *issuer);
  
  OCSP_CERTID *OCSP_cert_id_new(const EVP_MD *dgst, X509_NAME *issuerName,
  	    ASN1_BIT_STRING* issuerKey, ASN1_INTEGER *serialNumber);
  
  OCSP_ONEREQ *OCSP_request_add0_id(OCSP_REQUEST *req, OCSP_CERTID *cid);
  
  int	OCSP_request_add1_nonce(OCSP_REQUEST *req, unsigned char *val, int len);
  int	OCSP_basic_add1_nonce(OCSP_BASICRESP *resp, unsigned char *val, int len);
  int	OCSP_check_nonce(OCSP_REQUEST *req, OCSP_BASICRESP *bs);
  int	OCSP_copy_nonce(OCSP_BASICRESP *resp, OCSP_REQUEST *req);
  
  int	OCSP_request_set1_name(OCSP_REQUEST *req, X509_NAME *nm);
  int	OCSP_request_add1_cert(OCSP_REQUEST *req, X509 *cert);
  
  int	OCSP_request_sign(OCSP_REQUEST *req, X509 *signer, EVP_PKEY *key,
  	    const EVP_MD *dgst, STACK_OF(X509) *certs, unsigned long flags);
  
  int	OCSP_response_status(OCSP_RESPONSE *resp);
  OCSP_BASICRESP *OCSP_response_get1_basic(OCSP_RESPONSE *resp);
  
  int	OCSP_resp_count(OCSP_BASICRESP *bs);
  OCSP_SINGLERESP *OCSP_resp_get0(OCSP_BASICRESP *bs, int idx);
  int	OCSP_resp_find(OCSP_BASICRESP *bs, OCSP_CERTID *id, int last);
  int	OCSP_single_get0_status(OCSP_SINGLERESP *single, int *reason,
  	    ASN1_GENERALIZEDTIME **revtime, ASN1_GENERALIZEDTIME **thisupd,
  	    ASN1_GENERALIZEDTIME **nextupd);
  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	OCSP_check_validity(ASN1_GENERALIZEDTIME *thisupd,
  	    ASN1_GENERALIZEDTIME *nextupd, long sec, long maxsec);
  
  int	OCSP_request_verify(OCSP_REQUEST *req, STACK_OF(X509) *certs,
  	    X509_STORE *store, unsigned long flags);
  
  int	OCSP_parse_url(char *url, char **phost, char **pport, char **ppath,
  	    int *pssl);
  
  int	OCSP_id_issuer_cmp(OCSP_CERTID *a, OCSP_CERTID *b);
  int	OCSP_id_cmp(OCSP_CERTID *a, OCSP_CERTID *b);
  
  int	OCSP_request_onereq_count(OCSP_REQUEST *req);
  OCSP_ONEREQ *OCSP_request_onereq_get0(OCSP_REQUEST *req, int i);
  OCSP_CERTID *OCSP_onereq_get0_id(OCSP_ONEREQ *one);
  int	OCSP_id_get0_info(ASN1_OCTET_STRING **piNameHash, ASN1_OBJECT **pmd,
  	    ASN1_OCTET_STRING **pikeyHash, ASN1_INTEGER **pserial,
  	    OCSP_CERTID *cid);
  int	OCSP_request_is_signed(OCSP_REQUEST *req);
  OCSP_RESPONSE *OCSP_response_create(int status, OCSP_BASICRESP *bs);
  OCSP_SINGLERESP *OCSP_basic_add1_status(OCSP_BASICRESP *rsp, OCSP_CERTID *cid,
  	    int status, int reason, ASN1_TIME *revtime, ASN1_TIME *thisupd,
  	    ASN1_TIME *nextupd);
  int	OCSP_basic_add1_cert(OCSP_BASICRESP *resp, X509 *cert);
  int	OCSP_basic_sign(OCSP_BASICRESP *brsp, X509 *signer, EVP_PKEY *key,
  	    const EVP_MD *dgst, STACK_OF(X509) *certs, unsigned long flags);
  
  X509_EXTENSION *OCSP_crlID_new(char *url, long *n, char *tim);
  
  X509_EXTENSION *OCSP_accept_responses_new(char **oids);
  
  X509_EXTENSION *OCSP_archive_cutoff_new(char* tim);
  
  X509_EXTENSION *OCSP_url_svcloc_new(X509_NAME* issuer, char **urls);
  
  int	OCSP_REQUEST_get_ext_count(OCSP_REQUEST *x);
  int	OCSP_REQUEST_get_ext_by_NID(OCSP_REQUEST *x, int nid, int lastpos);
  int	OCSP_REQUEST_get_ext_by_OBJ(OCSP_REQUEST *x, ASN1_OBJECT *obj,
  	    int lastpos);
  int	OCSP_REQUEST_get_ext_by_critical(OCSP_REQUEST *x, int crit,
  	    int lastpos);
  X509_EXTENSION *OCSP_REQUEST_get_ext(OCSP_REQUEST *x, int loc);
  X509_EXTENSION *OCSP_REQUEST_delete_ext(OCSP_REQUEST *x, int loc);
  void *OCSP_REQUEST_get1_ext_d2i(OCSP_REQUEST *x, int nid, int *crit, int *idx);
  int	OCSP_REQUEST_add1_ext_i2d(OCSP_REQUEST *x, int nid, void *value,
  	    int crit, unsigned long flags);
  int	OCSP_REQUEST_add_ext(OCSP_REQUEST *x, X509_EXTENSION *ex, int loc);
  
  int	OCSP_ONEREQ_get_ext_count(OCSP_ONEREQ *x);
  int	OCSP_ONEREQ_get_ext_by_NID(OCSP_ONEREQ *x, int nid, int lastpos);
  int	OCSP_ONEREQ_get_ext_by_OBJ(OCSP_ONEREQ *x, ASN1_OBJECT *obj,
  	    int lastpos);
  int	OCSP_ONEREQ_get_ext_by_critical(OCSP_ONEREQ *x, int crit, int lastpos);
  X509_EXTENSION *OCSP_ONEREQ_get_ext(OCSP_ONEREQ *x, int loc);
  X509_EXTENSION *OCSP_ONEREQ_delete_ext(OCSP_ONEREQ *x, int loc);
  void *OCSP_ONEREQ_get1_ext_d2i(OCSP_ONEREQ *x, int nid, int *crit, int *idx);
  int	OCSP_ONEREQ_add1_ext_i2d(OCSP_ONEREQ *x, int nid, void *value, int crit,
  	    unsigned long flags);
  int	OCSP_ONEREQ_add_ext(OCSP_ONEREQ *x, X509_EXTENSION *ex, int loc);
  
  int	OCSP_BASICRESP_get_ext_count(OCSP_BASICRESP *x);
  int	OCSP_BASICRESP_get_ext_by_NID(OCSP_BASICRESP *x, int nid, int lastpos);
  int	OCSP_BASICRESP_get_ext_by_OBJ(OCSP_BASICRESP *x, ASN1_OBJECT *obj,
  	    int lastpos);
  int	OCSP_BASICRESP_get_ext_by_critical(OCSP_BASICRESP *x, int crit,
  	    int lastpos);
  X509_EXTENSION *OCSP_BASICRESP_get_ext(OCSP_BASICRESP *x, int loc);
  X509_EXTENSION *OCSP_BASICRESP_delete_ext(OCSP_BASICRESP *x, int loc);
  void *OCSP_BASICRESP_get1_ext_d2i(OCSP_BASICRESP *x, int nid, int *crit,
  	    int *idx);
  int	OCSP_BASICRESP_add1_ext_i2d(OCSP_BASICRESP *x, int nid, void *value,
  	    int crit, unsigned long flags);
  int	OCSP_BASICRESP_add_ext(OCSP_BASICRESP *x, X509_EXTENSION *ex, int loc);
  
  int	OCSP_SINGLERESP_get_ext_count(OCSP_SINGLERESP *x);
  int	OCSP_SINGLERESP_get_ext_by_NID(OCSP_SINGLERESP *x, int nid,
  	    int lastpos);
  int	OCSP_SINGLERESP_get_ext_by_OBJ(OCSP_SINGLERESP *x, ASN1_OBJECT *obj,
  	    int lastpos);
  int	OCSP_SINGLERESP_get_ext_by_critical(OCSP_SINGLERESP *x, int crit,
  	    int lastpos);
  X509_EXTENSION *OCSP_SINGLERESP_get_ext(OCSP_SINGLERESP *x, int loc);
  X509_EXTENSION *OCSP_SINGLERESP_delete_ext(OCSP_SINGLERESP *x, int loc);
  void *OCSP_SINGLERESP_get1_ext_d2i(OCSP_SINGLERESP *x, int nid, int *crit,
  	    int *idx);
  int	OCSP_SINGLERESP_add1_ext_i2d(OCSP_SINGLERESP *x, int nid, void *value,
  	    int crit, unsigned long flags);
  int	OCSP_SINGLERESP_add_ext(OCSP_SINGLERESP *x, X509_EXTENSION *ex,
  	    int loc);
  
  DECLARE_ASN1_FUNCTIONS(OCSP_SINGLERESP)
  DECLARE_ASN1_FUNCTIONS(OCSP_CERTSTATUS)
  DECLARE_ASN1_FUNCTIONS(OCSP_REVOKEDINFO)
  DECLARE_ASN1_FUNCTIONS(OCSP_BASICRESP)
  DECLARE_ASN1_FUNCTIONS(OCSP_RESPDATA)
  DECLARE_ASN1_FUNCTIONS(OCSP_RESPID)
  DECLARE_ASN1_FUNCTIONS(OCSP_RESPONSE)
  DECLARE_ASN1_FUNCTIONS(OCSP_RESPBYTES)
  DECLARE_ASN1_FUNCTIONS(OCSP_ONEREQ)
  DECLARE_ASN1_FUNCTIONS(OCSP_CERTID)
  DECLARE_ASN1_FUNCTIONS(OCSP_REQUEST)
  DECLARE_ASN1_FUNCTIONS(OCSP_SIGNATURE)
  DECLARE_ASN1_FUNCTIONS(OCSP_REQINFO)
  DECLARE_ASN1_FUNCTIONS(OCSP_CRLID)
  DECLARE_ASN1_FUNCTIONS(OCSP_SERVICELOC)
  
  const char *OCSP_response_status_str(long s);
  const char *OCSP_cert_status_str(long s);
  const char *OCSP_crl_reason_str(long s);
  
  int	OCSP_REQUEST_print(BIO *bp, OCSP_REQUEST* a, unsigned long flags);
  int	OCSP_RESPONSE_print(BIO *bp, OCSP_RESPONSE* o, unsigned long flags);
  
  int	OCSP_basic_verify(OCSP_BASICRESP *bs, STACK_OF(X509) *certs,
  	    X509_STORE *st, unsigned long flags);
  
  /* BEGIN ERROR CODES */
  /* The following lines are auto generated by the script mkerr.pl. Any changes
   * made after this point may be overwritten when the script is next run.
   */
  void ERR_load_OCSP_strings(void);
  
  /* Error codes for the OCSP functions. */
  
  /* Function codes. */
  #define OCSP_F_ASN1_STRING_ENCODE			 100
  #define OCSP_F_D2I_OCSP_NONCE				 102
  #define OCSP_F_OCSP_BASIC_ADD1_STATUS			 103
  #define OCSP_F_OCSP_BASIC_SIGN				 104
  #define OCSP_F_OCSP_BASIC_VERIFY			 105
  #define OCSP_F_OCSP_CERT_ID_NEW				 101
  #define OCSP_F_OCSP_CHECK_DELEGATED			 106
  #define OCSP_F_OCSP_CHECK_IDS				 107
  #define OCSP_F_OCSP_CHECK_ISSUER			 108
  #define OCSP_F_OCSP_CHECK_VALIDITY			 115
  #define OCSP_F_OCSP_MATCH_ISSUERID			 109
  #define OCSP_F_OCSP_PARSE_URL				 114
  #define OCSP_F_OCSP_REQUEST_SIGN			 110
  #define OCSP_F_OCSP_REQUEST_VERIFY			 116
  #define OCSP_F_OCSP_RESPONSE_GET1_BASIC			 111
  #define OCSP_F_OCSP_SENDREQ_BIO				 112
  #define OCSP_F_OCSP_SENDREQ_NBIO			 117
  #define OCSP_F_PARSE_HTTP_LINE1				 118
  #define OCSP_F_REQUEST_VERIFY				 113
  
  /* Reason codes. */
  #define OCSP_R_BAD_DATA					 100
  #define OCSP_R_CERTIFICATE_VERIFY_ERROR			 101
  #define OCSP_R_DIGEST_ERR				 102
  #define OCSP_R_ERROR_IN_NEXTUPDATE_FIELD		 122
  #define OCSP_R_ERROR_IN_THISUPDATE_FIELD		 123
  #define OCSP_R_ERROR_PARSING_URL			 121
  #define OCSP_R_MISSING_OCSPSIGNING_USAGE		 103
  #define OCSP_R_NEXTUPDATE_BEFORE_THISUPDATE		 124
  #define OCSP_R_NOT_BASIC_RESPONSE			 104
  #define OCSP_R_NO_CERTIFICATES_IN_CHAIN			 105
  #define OCSP_R_NO_CONTENT				 106
  #define OCSP_R_NO_PUBLIC_KEY				 107
  #define OCSP_R_NO_RESPONSE_DATA				 108
  #define OCSP_R_NO_REVOKED_TIME				 109
  #define OCSP_R_PRIVATE_KEY_DOES_NOT_MATCH_CERTIFICATE	 110
  #define OCSP_R_REQUEST_NOT_SIGNED			 128
  #define OCSP_R_RESPONSE_CONTAINS_NO_REVOCATION_DATA	 111
  #define OCSP_R_ROOT_CA_NOT_TRUSTED			 112
  #define OCSP_R_SERVER_READ_ERROR			 113
  #define OCSP_R_SERVER_RESPONSE_ERROR			 114
  #define OCSP_R_SERVER_RESPONSE_PARSE_ERROR		 115
  #define OCSP_R_SERVER_WRITE_ERROR			 116
  #define OCSP_R_SIGNATURE_FAILURE			 117
  #define OCSP_R_SIGNER_CERTIFICATE_NOT_FOUND		 118
  #define OCSP_R_STATUS_EXPIRED				 125
  #define OCSP_R_STATUS_NOT_YET_VALID			 126
  #define OCSP_R_STATUS_TOO_OLD				 127
  #define OCSP_R_UNKNOWN_MESSAGE_DIGEST			 119
  #define OCSP_R_UNKNOWN_NID				 120
  #define OCSP_R_UNSUPPORTED_REQUESTORNAME_TYPE		 129
  
  #ifdef  __cplusplus
  }
  #endif
  #endif
  