source: vendor/current/auth/ntlmssp/gensec_ntlmssp.c

Last change on this file was 988, checked in by Silvan Scherrer, 9 years ago

Samba Server: update vendor to version 4.4.3
File size: 6.7 KB
Line 
1/*
2 * Unix SMB/CIFS implementation.
3 * Version 3.0
4 * NTLMSSP Signing routines
5 * Copyright (C) Luke Kenneth Casson Leighton 1996-2001
6 * Copyright (C) Andrew Bartlett <abartlet@samba.org> 2003-2005
7 *
8 * This program is free software; you can redistribute it and/or modify
9 * it under the terms of the GNU General Public License as published by
10 * the Free Software Foundation; either version 3 of the License, or
11 * (at your option) any later version.
12 *
13 * This program is distributed in the hope that it will be useful,
14 * but WITHOUT ANY WARRANTY; without even the implied warranty of
15 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
16 * GNU General Public License for more details.
17 *
18 * You should have received a copy of the GNU General Public License
19 * along with this program; if not, see <http://www.gnu.org/licenses/>.
20 */
21
22#include "includes.h"
23#include "auth/ntlmssp/ntlmssp.h"
24#include "auth/gensec/gensec.h"
25#include "auth/gensec/gensec_internal.h"
26#include "auth/ntlmssp/ntlmssp_private.h"
27
28NTSTATUS gensec_ntlmssp_magic(struct gensec_security *gensec_security,
29 const DATA_BLOB *first_packet)
30{
31 if (ntlmssp_blob_matches_magic(first_packet)) {
32 return NT_STATUS_OK;
33 } else {
34 return NT_STATUS_INVALID_PARAMETER;
35 }
36}
37
38/**
39 * Return the NTLMSSP master session key
40 *
41 * @param ntlmssp_state NTLMSSP State
42 */
43
44NTSTATUS gensec_ntlmssp_session_key(struct gensec_security *gensec_security,
45 TALLOC_CTX *mem_ctx,
46 DATA_BLOB *session_key)
47{
48 struct gensec_ntlmssp_context *gensec_ntlmssp =
49 talloc_get_type_abort(gensec_security->private_data,
50 struct gensec_ntlmssp_context);
51 struct ntlmssp_state *ntlmssp_state = gensec_ntlmssp->ntlmssp_state;
52
53 if (ntlmssp_state->expected_state != NTLMSSP_DONE) {
54 return NT_STATUS_NO_USER_SESSION_KEY;
55 }
56
57 if (!ntlmssp_state->session_key.data) {
58 return NT_STATUS_NO_USER_SESSION_KEY;
59 }
60 *session_key = data_blob_talloc(mem_ctx, ntlmssp_state->session_key.data, ntlmssp_state->session_key.length);
61 if (!session_key->data) {
62 return NT_STATUS_NO_MEMORY;
63 }
64
65 return NT_STATUS_OK;
66}
67
68bool gensec_ntlmssp_have_feature(struct gensec_security *gensec_security,
69 uint32_t feature)
70{
71 struct gensec_ntlmssp_context *gensec_ntlmssp =
72 talloc_get_type_abort(gensec_security->private_data,
73 struct gensec_ntlmssp_context);
74 struct ntlmssp_state *ntlmssp_state = gensec_ntlmssp->ntlmssp_state;
75
76 if (feature & GENSEC_FEATURE_SIGN) {
77 if (!ntlmssp_state->session_key.length) {
78 return false;
79 }
80 if (ntlmssp_state->neg_flags & NTLMSSP_NEGOTIATE_SIGN) {
81 return true;
82 }
83 }
84 if (feature & GENSEC_FEATURE_SEAL) {
85 if (!ntlmssp_state->session_key.length) {
86 return false;
87 }
88 if (ntlmssp_state->neg_flags & NTLMSSP_NEGOTIATE_SEAL) {
89 return true;
90 }
91 }
92 if (feature & GENSEC_FEATURE_SESSION_KEY) {
93 if (ntlmssp_state->session_key.length) {
94 return true;
95 }
96 }
97 if (feature & GENSEC_FEATURE_DCE_STYLE) {
98 return true;
99 }
100 if (feature & GENSEC_FEATURE_ASYNC_REPLIES) {
101 if (ntlmssp_state->neg_flags & NTLMSSP_NEGOTIATE_NTLM2) {
102 return true;
103 }
104 }
105 if (feature & GENSEC_FEATURE_SIGN_PKT_HEADER) {
106 return true;
107 }
108 if (feature & GENSEC_FEATURE_NEW_SPNEGO) {
109 if (!ntlmssp_state->session_key.length) {
110 return false;
111 }
112 if (!(ntlmssp_state->neg_flags & NTLMSSP_NEGOTIATE_SIGN)) {
113 return false;
114 }
115 return ntlmssp_state->new_spnego;
116 }
117
118 return false;
119}
120
121NTSTATUS gensec_ntlmssp_start(struct gensec_security *gensec_security)
122{
123 struct gensec_ntlmssp_context *gensec_ntlmssp;
124
125 gensec_ntlmssp = talloc_zero(gensec_security,
126 struct gensec_ntlmssp_context);
127 if (!gensec_ntlmssp) {
128 return NT_STATUS_NO_MEMORY;
129 }
130
131 gensec_security->private_data = gensec_ntlmssp;
132 return NT_STATUS_OK;
133}
134
135NTSTATUS gensec_ntlmssp_sign_packet(struct gensec_security *gensec_security,
136 TALLOC_CTX *sig_mem_ctx,
137 const uint8_t *data, size_t length,
138 const uint8_t *whole_pdu, size_t pdu_length,
139 DATA_BLOB *sig)
140{
141 struct gensec_ntlmssp_context *gensec_ntlmssp =
142 talloc_get_type_abort(gensec_security->private_data,
143 struct gensec_ntlmssp_context);
144 NTSTATUS nt_status;
145
146 nt_status = ntlmssp_sign_packet(gensec_ntlmssp->ntlmssp_state,
147 sig_mem_ctx,
148 data, length,
149 whole_pdu, pdu_length,
150 sig);
151
152 return nt_status;
153}
154
155NTSTATUS gensec_ntlmssp_check_packet(struct gensec_security *gensec_security,
156 const uint8_t *data, size_t length,
157 const uint8_t *whole_pdu, size_t pdu_length,
158 const DATA_BLOB *sig)
159{
160 struct gensec_ntlmssp_context *gensec_ntlmssp =
161 talloc_get_type_abort(gensec_security->private_data,
162 struct gensec_ntlmssp_context);
163 NTSTATUS nt_status;
164
165 nt_status = ntlmssp_check_packet(gensec_ntlmssp->ntlmssp_state,
166 data, length,
167 whole_pdu, pdu_length,
168 sig);
169
170 return nt_status;
171}
172
173NTSTATUS gensec_ntlmssp_seal_packet(struct gensec_security *gensec_security,
174 TALLOC_CTX *sig_mem_ctx,
175 uint8_t *data, size_t length,
176 const uint8_t *whole_pdu, size_t pdu_length,
177 DATA_BLOB *sig)
178{
179 struct gensec_ntlmssp_context *gensec_ntlmssp =
180 talloc_get_type_abort(gensec_security->private_data,
181 struct gensec_ntlmssp_context);
182 NTSTATUS nt_status;
183
184 nt_status = ntlmssp_seal_packet(gensec_ntlmssp->ntlmssp_state,
185 sig_mem_ctx,
186 data, length,
187 whole_pdu, pdu_length,
188 sig);
189
190 return nt_status;
191}
192
193/*
194 wrappers for the ntlmssp_*() functions
195*/
196NTSTATUS gensec_ntlmssp_unseal_packet(struct gensec_security *gensec_security,
197 uint8_t *data, size_t length,
198 const uint8_t *whole_pdu, size_t pdu_length,
199 const DATA_BLOB *sig)
200{
201 struct gensec_ntlmssp_context *gensec_ntlmssp =
202 talloc_get_type_abort(gensec_security->private_data,
203 struct gensec_ntlmssp_context);
204 NTSTATUS nt_status;
205
206 nt_status = ntlmssp_unseal_packet(gensec_ntlmssp->ntlmssp_state,
207 data, length,
208 whole_pdu, pdu_length,
209 sig);
210
211 return nt_status;
212}
213
214size_t gensec_ntlmssp_sig_size(struct gensec_security *gensec_security, size_t data_size)
215{
216 return NTLMSSP_SIG_SIZE;
217}
218
219NTSTATUS gensec_ntlmssp_wrap(struct gensec_security *gensec_security,
220 TALLOC_CTX *out_mem_ctx,
221 const DATA_BLOB *in,
222 DATA_BLOB *out)
223{
224 struct gensec_ntlmssp_context *gensec_ntlmssp =
225 talloc_get_type_abort(gensec_security->private_data,
226 struct gensec_ntlmssp_context);
227
228 return ntlmssp_wrap(gensec_ntlmssp->ntlmssp_state,
229 out_mem_ctx,
230 in, out);
231}
232
233
234NTSTATUS gensec_ntlmssp_unwrap(struct gensec_security *gensec_security,
235 TALLOC_CTX *out_mem_ctx,
236 const DATA_BLOB *in,
237 DATA_BLOB *out)
238{
239 struct gensec_ntlmssp_context *gensec_ntlmssp =
240 talloc_get_type_abort(gensec_security->private_data,
241 struct gensec_ntlmssp_context);
242
243 return ntlmssp_unwrap(gensec_ntlmssp->ntlmssp_state,
244 out_mem_ctx,
245 in, out);
246}
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