Line data Source code
1 : /*
2 : * Copyright (c) 2004, PADL Software Pty Ltd.
3 : * All rights reserved.
4 : *
5 : * Redistribution and use in source and binary forms, with or without
6 : * modification, are permitted provided that the following conditions
7 : * are met:
8 : *
9 : * 1. Redistributions of source code must retain the above copyright
10 : * notice, this list of conditions and the following disclaimer.
11 : *
12 : * 2. Redistributions in binary form must reproduce the above copyright
13 : * notice, this list of conditions and the following disclaimer in the
14 : * documentation and/or other materials provided with the distribution.
15 : *
16 : * 3. Neither the name of PADL Software nor the names of its contributors
17 : * may be used to endorse or promote products derived from this software
18 : * without specific prior written permission.
19 : *
20 : * THIS SOFTWARE IS PROVIDED BY PADL SOFTWARE AND CONTRIBUTORS ``AS IS'' AND
21 : * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
22 : * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
23 : * ARE DISCLAIMED. IN NO EVENT SHALL PADL SOFTWARE OR CONTRIBUTORS BE LIABLE
24 : * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
25 : * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
26 : * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
27 : * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
28 : * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
29 : * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
30 : * SUCH DAMAGE.
31 : */
32 :
33 : /* $Id$ */
34 :
35 : #ifndef SPNEGO_LOCL_H
36 : #define SPNEGO_LOCL_H
37 :
38 : #include <config.h>
39 :
40 : #ifdef HAVE_SYS_TYPES_H
41 : #include <sys/types.h>
42 : #endif
43 : #ifdef HAVE_SYS_PARAM_H
44 : #include <sys/param.h>
45 : #endif
46 :
47 : #include <roken.h>
48 :
49 : #ifdef HAVE_PTHREAD_H
50 : #include <pthread.h>
51 : #endif
52 :
53 : #include <krb5.h>
54 : #include <gssapi.h>
55 : #include <gssapi_krb5.h>
56 : #include <gssapi_spnego.h>
57 : #include <assert.h>
58 : #include <stdlib.h>
59 : #include <string.h>
60 : #include <errno.h>
61 : #include <ctype.h>
62 : #ifdef HAVE_NETDB_H
63 : #include <netdb.h>
64 : #endif
65 :
66 : #include <heim_threads.h>
67 : #include <heimqueue.h>
68 : #include <asn1_err.h>
69 :
70 : #include <gssapi_mech.h>
71 :
72 : #include "spnego_asn1.h"
73 : #include "negoex_locl.h"
74 : #include "utils.h"
75 : #include <der.h>
76 :
77 : #include <heimbase.h>
78 :
79 : #define ALLOC(X, N) (X) = calloc((N), sizeof(*(X)))
80 :
81 : #define CHECK(ret, x) do { (ret) = (x); if (ret) goto fail; } while (0)
82 :
83 : struct gssspnego_ctx_desc;
84 : typedef struct gssspnego_ctx_desc *gssspnego_ctx;
85 :
86 : typedef OM_uint32
87 : (*gssspnego_initiator_state)(OM_uint32 * minor_status,
88 : gss_const_cred_id_t cred,
89 : gssspnego_ctx ctx,
90 : gss_const_name_t name,
91 : gss_const_OID mech_type,
92 : OM_uint32 req_flags,
93 : OM_uint32 time_req,
94 : const gss_channel_bindings_t input_chan_bindings,
95 : gss_const_buffer_t input_token,
96 : gss_buffer_t output_token,
97 : OM_uint32 * ret_flags,
98 : OM_uint32 * time_rec);
99 :
100 : struct gssspnego_ctx_desc {
101 : gss_buffer_desc NegTokenInit_mech_types;
102 : gss_OID preferred_mech_type;
103 : gss_OID selected_mech_type;
104 : gss_OID negotiated_mech_type;
105 : gss_ctx_id_t negotiated_ctx_id;
106 : OM_uint32 mech_flags;
107 : OM_uint32 mech_time_rec;
108 : gss_name_t mech_src_name;
109 : struct spnego_flags {
110 : unsigned int open : 1;
111 : unsigned int local : 1;
112 : unsigned int require_mic : 1;
113 : unsigned int peer_require_mic : 1;
114 : unsigned int sent_mic : 1;
115 : unsigned int verified_mic : 1;
116 : unsigned int safe_omit : 1;
117 : unsigned int maybe_open : 1;
118 : unsigned int seen_supported_mech : 1;
119 : } flags;
120 : HEIMDAL_MUTEX ctx_id_mutex;
121 :
122 : gss_name_t target_name;
123 : gssspnego_initiator_state initiator_state;
124 :
125 : uint8_t negoex_step;
126 : krb5_storage *negoex_transcript;
127 : uint32_t negoex_seqnum;
128 : conversation_id negoex_conv_id;
129 : HEIM_TAILQ_HEAD(negoex_mech_list, negoex_auth_mech) negoex_mechs;
130 : };
131 :
132 : extern gss_OID_desc _gss_spnego_mskrb_mechanism_oid_desc;
133 :
134 : struct gssspnego_optimistic_ctx {
135 : gssspnego_ctx spnegoctx;
136 : OM_uint32 req_flags;
137 : gss_name_t target_name;
138 : OM_uint32 time_req;
139 : gss_channel_bindings_t input_chan_bindings;
140 : /* out */
141 : gss_OID preferred_mech_type;
142 : gss_OID negotiated_mech_type;
143 : gss_buffer_desc optimistic_token;
144 : OM_uint32 optimistic_flags, optimistic_time_rec;
145 : gss_ctx_id_t gssctx;
146 : int complete;
147 : auth_scheme scheme;
148 : };
149 :
150 : #include "spnego-private.h"
151 :
152 : static inline int
153 0 : gssspnego_ctx_complete_p(gssspnego_ctx ctx)
154 : {
155 0 : return ctx->flags.open &&
156 0 : (ctx->flags.safe_omit || (ctx->flags.sent_mic && ctx->flags.verified_mic));
157 : }
158 :
159 : #endif /* SPNEGO_LOCL_H */
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