1/*-
2 * SPDX-License-Identifier: BSD-2-Clause
3 *
4 * Copyright (c) 2008 Isilon Inc http://www.isilon.com/
5 * Authors: Doug Rabson <dfr@rabson.org>
6 * Developed with Red Inc: Alfred Perlstein <alfred@freebsd.org>
7 *
8 * Redistribution and use in source and binary forms, with or without
9 * modification, are permitted provided that the following conditions
10 * are met:
11 * 1. Redistributions of source code must retain the above copyright
12 *    notice, this list of conditions and the following disclaimer.
13 * 2. Redistributions in binary form must reproduce the above copyright
14 *    notice, this list of conditions and the following disclaimer in the
15 *    documentation and/or other materials provided with the distribution.
16 *
17 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
18 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
19 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
20 * ARE DISCLAIMED.  IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
21 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
22 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
23 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
24 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
25 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
26 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
27 * SUCH DAMAGE.
28 */
29
30#include <sys/param.h>
31#include <sys/kernel.h>
32#include <sys/kobj.h>
33#include <sys/lock.h>
34#include <sys/malloc.h>
35#include <sys/mutex.h>
36#include <sys/proc.h>
37
38#include <kgssapi/gssapi.h>
39#include <kgssapi/gssapi_impl.h>
40#include <rpc/rpc.h>
41
42#include "gssd.h"
43#include "kgss_if.h"
44
45OM_uint32
46gss_init_sec_context(OM_uint32 * minor_status,
47    const gss_cred_id_t initiator_cred_handle,
48    gss_ctx_id_t * context_handle,
49    const gss_name_t target_name,
50    const gss_OID input_mech_type,
51    OM_uint32 req_flags,
52    OM_uint32 time_req,
53    const gss_channel_bindings_t input_chan_bindings,
54    const gss_buffer_t input_token,
55    gss_OID * actual_mech_type,
56    gss_buffer_t output_token,
57    OM_uint32 * ret_flags,
58    OM_uint32 * time_rec)
59{
60	struct init_sec_context_res res;
61	struct init_sec_context_args args;
62	enum clnt_stat stat;
63	gss_ctx_id_t ctx = *context_handle;
64	CLIENT *cl;
65
66	*minor_status = 0;
67
68	cl = kgss_gssd_client();
69	if (cl == NULL)
70		return (GSS_S_FAILURE);
71
72	args.uid = curthread->td_ucred->cr_uid;
73	if  (initiator_cred_handle)
74		args.cred = initiator_cred_handle->handle;
75	else
76		args.cred = 0;
77	if (ctx)
78		args.ctx = ctx->handle;
79	else
80		args.ctx = 0;
81	args.name = target_name->handle;
82	args.mech_type = input_mech_type;
83	args.req_flags = req_flags;
84	args.time_req = time_req;
85	args.input_chan_bindings = input_chan_bindings;
86	if (input_token)
87		args.input_token = *input_token;
88	else {
89		args.input_token.length = 0;
90		args.input_token.value = NULL;
91	}
92
93	bzero(&res, sizeof(res));
94	stat = gssd_init_sec_context_1(&args, &res, cl);
95	CLNT_RELEASE(cl);
96	if (stat != RPC_SUCCESS) {
97		*minor_status = stat;
98		return (GSS_S_FAILURE);
99	}
100
101	if (res.major_status != GSS_S_COMPLETE
102	    && res.major_status != GSS_S_CONTINUE_NEEDED) {
103		*minor_status = res.minor_status;
104		xdr_free((xdrproc_t) xdr_init_sec_context_res, &res);
105		return (res.major_status);
106	}
107
108	*minor_status = res.minor_status;
109
110	if (!ctx) {
111		ctx = kgss_create_context(res.actual_mech_type);
112		if (!ctx) {
113			xdr_free((xdrproc_t) xdr_init_sec_context_res, &res);
114			*minor_status = 0;
115			return (GSS_S_BAD_MECH);
116		}
117	}
118	*context_handle = ctx;
119	ctx->handle = res.ctx;
120	if (actual_mech_type)
121		*actual_mech_type = KGSS_MECH_TYPE(ctx);
122	kgss_copy_buffer(&res.output_token, output_token);
123	if (ret_flags)
124		*ret_flags = res.ret_flags;
125	if (time_rec)
126		*time_rec = res.time_rec;
127
128	xdr_free((xdrproc_t) xdr_init_sec_context_res, &res);
129
130	/*
131	 * If the context establishment is complete, export it from
132	 * userland and hand the result (which includes key material
133	 * etc.) to the kernel implementation.
134	 */
135	if (res.major_status == GSS_S_COMPLETE)
136		res.major_status = kgss_transfer_context(ctx);
137
138	return (res.major_status);
139}
140