1/*-
2 * Copyright (c) 2008 Isilon Inc http://www.isilon.com/
3 * Authors: Doug Rabson <dfr@rabson.org>
4 * Developed with Red Inc: Alfred Perlstein <alfred@freebsd.org>
5 *
6 * Redistribution and use in source and binary forms, with or without
7 * modification, are permitted provided that the following conditions
8 * are met:
9 * 1. Redistributions of source code must retain the above copyright
10 * notice, this list of conditions and the following disclaimer.
11 * 2. Redistributions in binary form must reproduce the above copyright
12 * notice, this list of conditions and the following disclaimer in the
13 * documentation and/or other materials provided with the distribution.
14 *
15 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
16 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
17 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
18 * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
19 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
20 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
21 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
22 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
23 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
24 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
25 * SUCH DAMAGE.
26 */
27
28#include <sys/cdefs.h>
29__FBSDID("$FreeBSD: head/sys/kgssapi/gss_accept_sec_context.c 184588 2008-11-03 10:38:00Z dfr $");
30
31#include <sys/param.h>
32#include <sys/kernel.h>
33#include <sys/kobj.h>
34#include <sys/malloc.h>
35
36#include <kgssapi/gssapi.h>
37#include <kgssapi/gssapi_impl.h>
38#include <rpc/rpc.h>
39
40#include "gssd.h"
41#include "kgss_if.h"
42
43OM_uint32 gss_accept_sec_context(OM_uint32 *minor_status,
44 gss_ctx_id_t *context_handle,
45 const gss_cred_id_t acceptor_cred_handle,
46 const gss_buffer_t input_token,
47 const gss_channel_bindings_t input_chan_bindings,
48 gss_name_t *src_name,
49 gss_OID *mech_type,
50 gss_buffer_t output_token,
51 OM_uint32 *ret_flags,
52 OM_uint32 *time_rec,
53 gss_cred_id_t *delegated_cred_handle)
54{
55 struct accept_sec_context_res res;
56 struct accept_sec_context_args args;
57 enum clnt_stat stat;
58 gss_ctx_id_t ctx = *context_handle;
59 gss_name_t name;
60 gss_cred_id_t cred;
61
62 if (!kgss_gssd_handle)
63 return (GSS_S_FAILURE);
64
65 if (ctx)
66 args.ctx = ctx->handle;
67 else
68 args.ctx = 0;
69 if (acceptor_cred_handle)
70 args.cred = acceptor_cred_handle->handle;
71 else
72 args.cred = 0;
73 args.input_token = *input_token;
74 args.input_chan_bindings = input_chan_bindings;
75
76 bzero(&res, sizeof(res));
77 stat = gssd_accept_sec_context_1(&args, &res, kgss_gssd_handle);
78 if (stat != RPC_SUCCESS) {
79 *minor_status = stat;
80 return (GSS_S_FAILURE);
81 }
82
83 if (res.major_status != GSS_S_COMPLETE
84 && res.major_status != GSS_S_CONTINUE_NEEDED) {
85 *minor_status = res.minor_status;
86 xdr_free((xdrproc_t) xdr_accept_sec_context_res, &res);
87 return (res.major_status);
88 }
89
90 *minor_status = res.minor_status;
91
92 if (!ctx) {
93 ctx = kgss_create_context(res.mech_type);
94 if (!ctx) {
95 xdr_free((xdrproc_t) xdr_accept_sec_context_res, &res);
96 *minor_status = 0;
97 return (GSS_S_BAD_MECH);
98 }
99 }
100 *context_handle = ctx;
101
102 ctx->handle = res.ctx;
103 name = malloc(sizeof(struct _gss_name_t), M_GSSAPI, M_WAITOK);
104 name->handle = res.src_name;
105 if (src_name) {
106 *src_name = name;
107 } else {
108 OM_uint32 junk;
109 gss_release_name(&junk, &name);
110 }
111 if (mech_type)
112 *mech_type = KGSS_MECH_TYPE(ctx);
113 kgss_copy_buffer(&res.output_token, output_token);
114 if (ret_flags)
115 *ret_flags = res.ret_flags;
116 if (time_rec)
117 *time_rec = res.time_rec;
118 cred = malloc(sizeof(struct _gss_cred_id_t), M_GSSAPI, M_WAITOK);
119 cred->handle = res.delegated_cred_handle;
120 if (delegated_cred_handle) {
121 *delegated_cred_handle = cred;
122 } else {
123 OM_uint32 junk;
124 gss_release_cred(&junk, &cred);
125 }
126
127 xdr_free((xdrproc_t) xdr_accept_sec_context_res, &res);
128
129 /*
130 * If the context establishment is complete, export it from
131 * userland and hand the result (which includes key material
132 * etc.) to the kernel implementation.
133 */
134 if (res.major_status == GSS_S_COMPLETE)
135 res.major_status = kgss_transfer_context(ctx);
136
137 return (res.major_status);
138}