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/*-
* SPDX-License-Identifier: BSD-3-Clause
*
* Copyright (c) 2009, Sun Microsystems, Inc.
* All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions are met:
* - Redistributions of source code must retain the above copyright notice,
* this list of conditions and the following disclaimer.
* - 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.
* - Neither the name of Sun Microsystems, Inc. nor the names of its
* contributors may be used to endorse or promote products derived
* from this software without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
* AND ANY EXPRESS 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 COPYRIGHT HOLDER OR 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.
*/
#include <sys/cdefs.h>
/*
* auth_none.c
* Creates a client authentication handle for passing "null"
* credentials and verifiers to remote systems.
*
* Copyright (C) 1984, Sun Microsystems, Inc.
*/
/*
* Modified from auth_none.c to expect a reply verifier of "STARTTLS"
* for the RPC-over-TLS STARTTLS command.
*/
#include <sys/param.h>
#include <sys/systm.h>
#include <sys/kernel.h>
#include <sys/lock.h>
#include <sys/malloc.h>
#include <sys/mutex.h>
#include <rpc/types.h>
#include <rpc/xdr.h>
#include <rpc/auth.h>
#include <rpc/clnt.h>
#include <rpc/rpcsec_tls.h>
#define MAX_MARSHAL_SIZE 20
/*
* Authenticator operations routines
*/
static bool_t authtls_marshal (AUTH *, uint32_t, XDR *, struct mbuf *);
static void authtls_verf (AUTH *);
static bool_t authtls_validate (AUTH *, uint32_t, struct opaque_auth *,
struct mbuf **);
static bool_t authtls_refresh (AUTH *, void *);
static void authtls_destroy (AUTH *);
static const struct auth_ops authtls_ops = {
.ah_nextverf = authtls_verf,
.ah_marshal = authtls_marshal,
.ah_validate = authtls_validate,
.ah_refresh = authtls_refresh,
.ah_destroy = authtls_destroy,
};
struct authtls_private {
AUTH no_client;
char mclient[MAX_MARSHAL_SIZE];
u_int mcnt;
};
static struct authtls_private authtls_private;
static struct opaque_auth _tls_null_auth;
static void
authtls_init(void *dummy)
{
struct authtls_private *ap = &authtls_private;
XDR xdrs;
_tls_null_auth.oa_flavor = AUTH_TLS;
_tls_null_auth.oa_base = NULL;
_tls_null_auth.oa_length = 0;
ap->no_client.ah_cred = _tls_null_auth;
ap->no_client.ah_verf = _null_auth;
ap->no_client.ah_ops = &authtls_ops;
xdrmem_create(&xdrs, ap->mclient, MAX_MARSHAL_SIZE, XDR_ENCODE);
xdr_opaque_auth(&xdrs, &ap->no_client.ah_cred);
xdr_opaque_auth(&xdrs, &ap->no_client.ah_verf);
ap->mcnt = XDR_GETPOS(&xdrs);
XDR_DESTROY(&xdrs);
}
SYSINIT(authtls_init, SI_SUB_KMEM, SI_ORDER_ANY, authtls_init, NULL);
AUTH *
authtls_create(void)
{
struct authtls_private *ap = &authtls_private;
return (&ap->no_client);
}
/*ARGSUSED*/
static bool_t
authtls_marshal(AUTH *client, uint32_t xid, XDR *xdrs, struct mbuf *args)
{
struct authtls_private *ap = &authtls_private;
KASSERT(xdrs != NULL, ("authtls_marshal: xdrs is null"));
if (!XDR_PUTBYTES(xdrs, ap->mclient, ap->mcnt))
return (FALSE);
return (xdr_putmbuf(xdrs, args));
}
/* All these unused parameters are required to keep ANSI-C from grumbling */
/*ARGSUSED*/
static void
authtls_verf(AUTH *client)
{
}
/*ARGSUSED*/
static bool_t
authtls_validate(AUTH *client, uint32_t xid, struct opaque_auth *opaque,
struct mbuf **mrepp)
{
size_t strsiz;
strsiz = strlen(RPCTLS_START_STRING);
/* The verifier must be the string RPCTLS_START_STRING. */
if (opaque != NULL &&
(opaque->oa_length != strsiz || memcmp(opaque->oa_base,
RPCTLS_START_STRING, strsiz) != 0))
return (FALSE);
return (TRUE);
}
/*ARGSUSED*/
static bool_t
authtls_refresh(AUTH *client, void *dummy)
{
return (FALSE);
}
/*ARGSUSED*/
static void
authtls_destroy(AUTH *client)
{
}
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