/*-
* SPDX-License-Identifier: BSD-2-Clause-FreeBSD
*
* Copyright (c) 2008 Isilon Inc http://www.isilon.com/
* Authors: Doug Rabson <dfr@rabson.org>
* Developed with Red Inc: Alfred Perlstein <alfred@freebsd.org>
*
* 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.
*
* THIS SOFTWARE IS PROVIDED BY THE AUTHOR 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 AUTHOR 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>
__FBSDID("$FreeBSD$");
#include <sys/param.h>
#include <sys/kernel.h>
#include <sys/kobj.h>
#include <sys/lock.h>
#include <sys/malloc.h>
#include <sys/mutex.h>
#include <kgssapi/gssapi.h>
#include <kgssapi/gssapi_impl.h>
#include <rpc/rpc.h>
#include "gssd.h"
#include "kgss_if.h"
OM_uint32 gss_accept_sec_context(OM_uint32 *minor_status,
gss_ctx_id_t *context_handle,
const gss_cred_id_t acceptor_cred_handle,
const gss_buffer_t input_token,
const gss_channel_bindings_t input_chan_bindings,
gss_name_t *src_name,
gss_OID *mech_type,
gss_buffer_t output_token,
OM_uint32 *ret_flags,
OM_uint32 *time_rec,
gss_cred_id_t *delegated_cred_handle)
{
struct accept_sec_context_res res;
struct accept_sec_context_args args;
enum clnt_stat stat;
gss_ctx_id_t ctx = *context_handle;
gss_name_t name;
gss_cred_id_t cred;
CLIENT *cl;
cl = kgss_gssd_client();
if (cl == NULL) {
*minor_status = 0;
return (GSS_S_FAILURE);
}
if (ctx)
args.ctx = ctx->handle;
else
args.ctx = 0;
if (acceptor_cred_handle)
args.cred = acceptor_cred_handle->handle;
else
args.cred = 0;
args.input_token = *input_token;
args.input_chan_bindings = input_chan_bindings;
bzero(&res, sizeof(res));
stat = gssd_accept_sec_context_1(&args, &res, cl);
CLNT_RELEASE(cl);
if (stat != RPC_SUCCESS) {
*minor_status = stat;
return (GSS_S_FAILURE);
}
if (res.major_status != GSS_S_COMPLETE
&& res.major_status != GSS_S_CONTINUE_NEEDED) {
*minor_status = res.minor_status;
xdr_free((xdrproc_t) xdr_accept_sec_context_res, &res);
return (res.major_status);
}
*minor_status = res.minor_status;
if (!ctx) {
ctx = kgss_create_context(res.mech_type);
if (!ctx) {
xdr_free((xdrproc_t) xdr_accept_sec_context_res, &res);
*minor_status = 0;
return (GSS_S_BAD_MECH);
}
}
*context_handle = ctx;
ctx->handle = res.ctx;
name = malloc(sizeof(struct _gss_name_t), M_GSSAPI, M_WAITOK);
name->handle = res.src_name;
if (src_name) {
*src_name = name;
} else {
OM_uint32 junk;
gss_release_name(&junk, &name);
}
if (mech_type)
*mech_type = KGSS_MECH_TYPE(ctx);
kgss_copy_buffer(&res.output_token, output_token);
if (ret_flags)
*ret_flags = res.ret_flags;
if (time_rec)
*time_rec = res.time_rec;
cred = malloc(sizeof(struct _gss_cred_id_t), M_GSSAPI, M_WAITOK);
cred->handle = res.delegated_cred_handle;
if (delegated_cred_handle) {
*delegated_cred_handle = cred;
} else {
OM_uint32 junk;
gss_release_cred(&junk, &cred);
}
xdr_free((xdrproc_t) xdr_accept_sec_context_res, &res);
/*
* If the context establishment is complete, export it from
* userland and hand the result (which includes key material
* etc.) to the kernel implementation.
*/
if (res.major_status == GSS_S_COMPLETE)
res.major_status = kgss_transfer_context(ctx);
return (res.major_status);
}
