.\"	$OpenBSD: OCSP_REQUEST_new.3,v 1.1 2016/11/27 20:40:07 schwarze Exp $
.\"	OpenSSL b97fdb57 Nov 11 09:33:09 2016 +0100
.\"
.\" This file was written by Dr. Stephen Henson <steve@openssl.org>.
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.Dd $Mdocdate: November 27 2016 $
.Dt OCSP_REQUEST_NEW 3
.Os
.Sh NAME
.Nm OCSP_REQUEST_new ,
.Nm OCSP_REQUEST_free ,
.Nm OCSP_request_add0_id ,
.Nm OCSP_request_sign ,
.Nm OCSP_request_add1_cert ,
.Nm OCSP_request_onereq_count ,
.Nm OCSP_request_onereq_get0 ,
.Nd OCSP request functions
.Sh SYNOPSIS
.In openssl/ocsp.h
.Ft OCSP_REQUEST *
.Fn OCSP_REQUEST_new void
.Ft void
.Fo OCSP_REQUEST_free
.Fa "OCSP_REQUEST *req"
.Fc
.Ft OCSP_ONEREQ *
.Fo OCSP_request_add0_id
.Fa "OCSP_REQUEST *req"
.Fa "OCSP_CERTID *cid"
.Fc
.Ft int
.Fo OCSP_request_sign
.Fa "OCSP_REQUEST *req"
.Fa "X509 *signer"
.Fa "EVP_PKEY *key"
.Fa "const EVP_MD *dgst"
.Fa "STACK_OF(X509) *certs"
.Fa "unsigned long flags"
.Fc
.Ft int
.Fo OCSP_request_add1_cert
.Fa "OCSP_REQUEST *req"
.Fa "X509 *cert"
.Fc
.Ft int
.Fo OCSP_request_onereq_count
.Fa "OCSP_REQUEST *req"
.Fc
.Ft OCSP_ONEREQ *
.Fo OCSP_request_onereq_get0
.Fa "OCSP_REQUEST *req"
.Fa "int i"
.Fc
.Sh DESCRIPTION
.Fn OCSP_REQUEST_new
allocates and returns an empty
.Vt OCSP_REQUEST
structure.
.Pp
.Fn OCSP_REQUEST_free
frees up the request structure
.Fa req .
.Pp
.Fn OCSP_request_add0_id
adds certificate ID
.Fa cid
to
.Fa req .
It returns the
.Vt OCSP_ONEREQ
structure added so an application can add additional extensions to the
request.
The
.Fa cid
parameter must not be freed up after the operation.
.Pp
.Fn OCSP_request_sign
signs OCSP request
.Fa req
using certificate
.Fa signer ,
private key
.Fa key ,
digest
.Fa dgst ,
and additional certificates
.Fa certs .
If the
.Fa flags
option
.Dv OCSP_NOCERTS
is set, then no certificates will be included in the request.
.Pp
.Fn OCSP_request_add1_cert
adds certificate
.Fa cert
to request
.Fa req .
The application is responsible for freeing up
.Fa cert
after use.
.Pp
.Fn OCSP_request_onereq_count
returns the total number of
.Vt OCSP_ONEREQ
structures in
.Fa req .
.Pp
.Fn OCSP_request_onereq_get0
returns an internal pointer to the
.Vt OCSP_ONEREQ
contained in
.Fa req
of index
.Fa i .
The index value
.Fa i
runs from 0 to
.Fn OCSP_request_onereq_count req No - 1 .
.Pp
An
.Vt OCSP_REQUEST
structure contains one or more
.Vt OCSP_ONEREQ
structures corresponding to each certificate.
.Pp
.Fn OCSP_request_onereq_count
and
.Fn OCSP_request_onereq_get0
are mainly used by OCSP responders.
.Sh RETURN VALUES
.Fn OCSP_REQUEST_new
returns an empty
.Vt OCSP_REQUEST
structure or
.Dv NULL
if an error occurred.
.Pp
.Fn OCSP_request_add0_id
returns the
.Vt OCSP_ONEREQ
structure containing
.Fa cid
or
.Dv NULL
if an error occurred.
.Pp
.Fn OCSP_request_sign
and
.Fn OCSP_request_add1_cert
return 1 for success or 0 for failure.
.Pp
.Fn OCSP_request_onereq_count
returns the total number of
.Vt OCSP_ONEREQ
structures in
.Fa req .
.Pp
.Fn OCSP_request_onereq_get0
returns a pointer to an
.Vt OCSP_ONEREQ
structure or
.Dv NULL
if the index value is out or range.
.Sh EXAMPLE
Create an
.Vt OCSP_REQUEST
structure for certificate
.Fa cert
with issuer
.Fa issuer :
.Bd -literal -offset indent
OCSP_REQUEST *req;
OCSP_ID *cid;

req = OCSP_REQUEST_new();
if (req == NULL)
	/* error */
cid = OCSP_cert_to_id(EVP_sha1(), cert, issuer);
if (cid == NULL)
	/* error */

if (OCSP_REQUEST_add0_id(req, cid) == NULL)
	/* error */

 /* Do something with req, e.g. query responder */

OCSP_REQUEST_free(req);
.Ed
.Sh SEE ALSO
.Xr crypto 3 ,
.Xr OCSP_cert_to_id 3 ,
.Xr OCSP_request_add1_nonce 3 ,
.Xr OCSP_resp_find_status 3 ,
.Xr OCSP_response_status 3 ,
.Xr OCSP_sendreq_new 3