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
37 #include <kgssapi/gssapi.h>
38 #include <kgssapi/gssapi_impl.h>
39 #include <rpc/rpc.h>
40
41 #include "gssd.h"
42 #include "kgss_if.h"
43
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)44 OM_uint32 gss_accept_sec_context(OM_uint32 *minor_status,
45 gss_ctx_id_t *context_handle,
46 const gss_cred_id_t acceptor_cred_handle,
47 const gss_buffer_t input_token,
48 const gss_channel_bindings_t input_chan_bindings,
49 gss_name_t *src_name,
50 gss_OID *mech_type,
51 gss_buffer_t output_token,
52 OM_uint32 *ret_flags,
53 OM_uint32 *time_rec,
54 gss_cred_id_t *delegated_cred_handle)
55 {
56 struct accept_sec_context_res res;
57 struct accept_sec_context_args args;
58 enum clnt_stat stat;
59 gss_ctx_id_t ctx = *context_handle;
60 gss_name_t name;
61 gss_cred_id_t cred;
62 CLIENT *cl;
63
64 cl = kgss_gssd_client();
65 if (cl == NULL) {
66 *minor_status = 0;
67 return (GSS_S_FAILURE);
68 }
69
70 if (ctx)
71 args.ctx = ctx->handle;
72 else
73 args.ctx = 0;
74 if (acceptor_cred_handle)
75 args.cred = acceptor_cred_handle->handle;
76 else
77 args.cred = 0;
78 args.input_token = *input_token;
79 args.input_chan_bindings = input_chan_bindings;
80
81 bzero(&res, sizeof(res));
82 stat = gssd_accept_sec_context_1(&args, &res, cl);
83 CLNT_RELEASE(cl);
84 if (stat != RPC_SUCCESS) {
85 *minor_status = stat;
86 return (GSS_S_FAILURE);
87 }
88
89 if (res.major_status != GSS_S_COMPLETE
90 && res.major_status != GSS_S_CONTINUE_NEEDED) {
91 *minor_status = res.minor_status;
92 xdr_free((xdrproc_t) xdr_accept_sec_context_res, &res);
93 return (res.major_status);
94 }
95
96 *minor_status = res.minor_status;
97
98 if (!ctx) {
99 ctx = kgss_create_context(res.mech_type);
100 if (!ctx) {
101 xdr_free((xdrproc_t) xdr_accept_sec_context_res, &res);
102 *minor_status = 0;
103 return (GSS_S_BAD_MECH);
104 }
105 }
106 *context_handle = ctx;
107
108 ctx->handle = res.ctx;
109 name = malloc(sizeof(struct _gss_name_t), M_GSSAPI, M_WAITOK);
110 name->handle = res.src_name;
111 if (src_name) {
112 *src_name = name;
113 } else {
114 OM_uint32 junk;
115 gss_release_name(&junk, &name);
116 }
117 if (mech_type)
118 *mech_type = KGSS_MECH_TYPE(ctx);
119 kgss_copy_buffer(&res.output_token, output_token);
120 if (ret_flags)
121 *ret_flags = res.ret_flags;
122 if (time_rec)
123 *time_rec = res.time_rec;
124 cred = malloc(sizeof(struct _gss_cred_id_t), M_GSSAPI, M_WAITOK);
125 cred->handle = res.delegated_cred_handle;
126 if (delegated_cred_handle) {
127 *delegated_cred_handle = cred;
128 } else {
129 OM_uint32 junk;
130 gss_release_cred(&junk, &cred);
131 }
132
133 xdr_free((xdrproc_t) xdr_accept_sec_context_res, &res);
134
135 /*
136 * If the context establishment is complete, export it from
137 * userland and hand the result (which includes key material
138 * etc.) to the kernel implementation.
139 */
140 if (res.major_status == GSS_S_COMPLETE)
141 res.major_status = kgss_transfer_context(ctx);
142
143 return (res.major_status);
144 }
145