mirror of
https://github.com/openssl/openssl.git
synced 2024-12-27 06:21:43 +08:00
98ca37e4aa
Reviewed-by: Matt Caswell <matt@openssl.org> Reviewed-by: Tomas Mraz <tmraz@fedoraproject.org> (Merged from https://github.com/openssl/openssl/pull/10208)
128 lines
5.5 KiB
Plaintext
128 lines
5.5 KiB
Plaintext
=pod
|
|
|
|
=head1 NAME
|
|
|
|
SSL_CTX_set_tlsext_status_cb,
|
|
SSL_CTX_get_tlsext_status_cb,
|
|
SSL_CTX_set_tlsext_status_arg,
|
|
SSL_CTX_get_tlsext_status_arg,
|
|
SSL_CTX_set_tlsext_status_type,
|
|
SSL_CTX_get_tlsext_status_type,
|
|
SSL_set_tlsext_status_type,
|
|
SSL_get_tlsext_status_type,
|
|
SSL_get_tlsext_status_ocsp_resp,
|
|
SSL_set_tlsext_status_ocsp_resp
|
|
- OCSP Certificate Status Request functions
|
|
|
|
=head1 SYNOPSIS
|
|
|
|
#include <openssl/tls1.h>
|
|
|
|
long SSL_CTX_set_tlsext_status_cb(SSL_CTX *ctx, int (*callback)(SSL *, void *));
|
|
long SSL_CTX_get_tlsext_status_cb(SSL_CTX *ctx, int (**callback)(SSL *, void *));
|
|
|
|
long SSL_CTX_set_tlsext_status_arg(SSL_CTX *ctx, void *arg);
|
|
long SSL_CTX_get_tlsext_status_arg(SSL_CTX *ctx, void **arg);
|
|
|
|
long SSL_CTX_set_tlsext_status_type(SSL_CTX *ctx, int type);
|
|
long SSL_CTX_get_tlsext_status_type(SSL_CTX *ctx);
|
|
|
|
long SSL_set_tlsext_status_type(SSL *s, int type);
|
|
long SSL_get_tlsext_status_type(SSL *s);
|
|
|
|
long SSL_get_tlsext_status_ocsp_resp(ssl, unsigned char **resp);
|
|
long SSL_set_tlsext_status_ocsp_resp(ssl, unsigned char *resp, int len);
|
|
|
|
=head1 DESCRIPTION
|
|
|
|
A client application may request that a server send back an OCSP status response
|
|
(also known as OCSP stapling). To do so the client should call the
|
|
SSL_CTX_set_tlsext_status_type() function prior to the creation of any SSL
|
|
objects. Alternatively an application can call the SSL_set_tlsext_status_type()
|
|
function on an individual SSL object prior to the start of the handshake.
|
|
Currently the only supported type is B<TLSEXT_STATUSTYPE_ocsp>. This value
|
|
should be passed in the B<type> argument. Calling
|
|
SSL_CTX_get_tlsext_status_type() will return the type B<TLSEXT_STATUSTYPE_ocsp>
|
|
previously set via SSL_CTX_set_tlsext_status_type() or -1 if not set.
|
|
|
|
The client should additionally provide a callback function to decide what to do
|
|
with the returned OCSP response by calling SSL_CTX_set_tlsext_status_cb(). The
|
|
callback function should determine whether the returned OCSP response is
|
|
acceptable or not. The callback will be passed as an argument the value
|
|
previously set via a call to SSL_CTX_set_tlsext_status_arg(). Note that the
|
|
callback will not be called in the event of a handshake where session resumption
|
|
occurs (because there are no Certificates exchanged in such a handshake).
|
|
The callback previously set via SSL_CTX_set_tlsext_status_cb() can be retrieved
|
|
by calling SSL_CTX_get_tlsext_status_cb(), and the argument by calling
|
|
SSL_CTX_get_tlsext_status_arg().
|
|
|
|
On the client side SSL_get_tlsext_status_type() can be used to determine whether
|
|
the client has previously called SSL_set_tlsext_status_type(). It will return
|
|
B<TLSEXT_STATUSTYPE_ocsp> if it has been called or -1 otherwise. On the server
|
|
side SSL_get_tlsext_status_type() can be used to determine whether the client
|
|
requested OCSP stapling. If the client requested it then this function will
|
|
return B<TLSEXT_STATUSTYPE_ocsp>, or -1 otherwise.
|
|
|
|
The response returned by the server can be obtained via a call to
|
|
SSL_get_tlsext_status_ocsp_resp(). The value B<*resp> will be updated to point
|
|
to the OCSP response data and the return value will be the length of that data.
|
|
Typically a callback would obtain an OCSP_RESPONSE object from this data via a
|
|
call to the d2i_OCSP_RESPONSE() function. If the server has not provided any
|
|
response data then B<*resp> will be NULL and the return value from
|
|
SSL_get_tlsext_status_ocsp_resp() will be -1.
|
|
|
|
A server application must also call the SSL_CTX_set_tlsext_status_cb() function
|
|
if it wants to be able to provide clients with OCSP Certificate Status
|
|
responses. Typically the server callback would obtain the server certificate
|
|
that is being sent back to the client via a call to SSL_get_certificate();
|
|
obtain the OCSP response to be sent back; and then set that response data by
|
|
calling SSL_set_tlsext_status_ocsp_resp(). A pointer to the response data should
|
|
be provided in the B<resp> argument, and the length of that data should be in
|
|
the B<len> argument.
|
|
|
|
=head1 RETURN VALUES
|
|
|
|
The callback when used on the client side should return a negative value on
|
|
error; 0 if the response is not acceptable (in which case the handshake will
|
|
fail) or a positive value if it is acceptable.
|
|
|
|
The callback when used on the server side should return with either
|
|
SSL_TLSEXT_ERR_OK (meaning that the OCSP response that has been set should be
|
|
returned), SSL_TLSEXT_ERR_NOACK (meaning that an OCSP response should not be
|
|
returned) or SSL_TLSEXT_ERR_ALERT_FATAL (meaning that a fatal error has
|
|
occurred).
|
|
|
|
SSL_CTX_set_tlsext_status_cb(), SSL_CTX_set_tlsext_status_arg(),
|
|
SSL_CTX_set_tlsext_status_type(), SSL_set_tlsext_status_type() and
|
|
SSL_set_tlsext_status_ocsp_resp() return 0 on error or 1 on success.
|
|
|
|
SSL_CTX_get_tlsext_status_type() returns the value previously set by
|
|
SSL_CTX_set_tlsext_status_type(), or -1 if not set.
|
|
|
|
SSL_get_tlsext_status_ocsp_resp() returns the length of the OCSP response data
|
|
or -1 if there is no OCSP response data.
|
|
|
|
SSL_get_tlsext_status_type() returns B<TLSEXT_STATUSTYPE_ocsp> on the client
|
|
side if SSL_set_tlsext_status_type() was previously called, or on the server
|
|
side if the client requested OCSP stapling. Otherwise -1 is returned.
|
|
|
|
=head1 SEE ALSO
|
|
|
|
L<ssl(7)>
|
|
|
|
=head1 HISTORY
|
|
|
|
The SSL_get_tlsext_status_type(), SSL_CTX_get_tlsext_status_type()
|
|
and SSL_CTX_set_tlsext_status_type() functions were added in OpenSSL 1.1.0.
|
|
|
|
=head1 COPYRIGHT
|
|
|
|
Copyright 2015-2016 The OpenSSL Project Authors. All Rights Reserved.
|
|
|
|
Licensed under the Apache License 2.0 (the "License"). You may not use
|
|
this file except in compliance with the License. You can obtain a copy
|
|
in the file LICENSE in the source distribution or at
|
|
L<https://www.openssl.org/source/license.html>.
|
|
|
|
=cut
|