Line data Source code
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 :
28 102 : NTSTATUS gensec_ntlmssp_magic(struct gensec_security *gensec_security,
29 : const DATA_BLOB *first_packet)
30 : {
31 102 : if (ntlmssp_blob_matches_magic(first_packet)) {
32 102 : return NT_STATUS_OK;
33 : } else {
34 0 : 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 :
44 54614 : NTSTATUS gensec_ntlmssp_session_key(struct gensec_security *gensec_security,
45 : TALLOC_CTX *mem_ctx,
46 : DATA_BLOB *session_key)
47 : {
48 262 : struct gensec_ntlmssp_context *gensec_ntlmssp =
49 54614 : talloc_get_type_abort(gensec_security->private_data,
50 : struct gensec_ntlmssp_context);
51 54614 : struct ntlmssp_state *ntlmssp_state = gensec_ntlmssp->ntlmssp_state;
52 :
53 54614 : if (ntlmssp_state->expected_state != NTLMSSP_DONE) {
54 0 : return NT_STATUS_NO_USER_SESSION_KEY;
55 : }
56 :
57 54614 : if (!ntlmssp_state->session_key.data) {
58 28 : return NT_STATUS_NO_USER_SESSION_KEY;
59 : }
60 54586 : *session_key = data_blob_talloc(mem_ctx, ntlmssp_state->session_key.data, ntlmssp_state->session_key.length);
61 54586 : if (!session_key->data) {
62 0 : return NT_STATUS_NO_MEMORY;
63 : }
64 :
65 54586 : return NT_STATUS_OK;
66 : }
67 :
68 1159975 : bool gensec_ntlmssp_have_feature(struct gensec_security *gensec_security,
69 : uint32_t feature)
70 : {
71 1908 : struct gensec_ntlmssp_context *gensec_ntlmssp =
72 1159975 : talloc_get_type_abort(gensec_security->private_data,
73 : struct gensec_ntlmssp_context);
74 1159975 : struct ntlmssp_state *ntlmssp_state = gensec_ntlmssp->ntlmssp_state;
75 :
76 1159975 : if (feature & GENSEC_FEATURE_SIGN) {
77 653272 : if (!ntlmssp_state->session_key.length) {
78 84 : return false;
79 : }
80 653188 : if (ntlmssp_state->neg_flags & NTLMSSP_NEGOTIATE_SIGN) {
81 650241 : return true;
82 : }
83 : }
84 508275 : if (feature & GENSEC_FEATURE_SEAL) {
85 222485 : if (!ntlmssp_state->session_key.length) {
86 0 : return false;
87 : }
88 222485 : if (ntlmssp_state->neg_flags & NTLMSSP_NEGOTIATE_SEAL) {
89 194876 : return true;
90 : }
91 : }
92 313399 : if (feature & GENSEC_FEATURE_SESSION_KEY) {
93 42912 : if (ntlmssp_state->session_key.length) {
94 42666 : return true;
95 : }
96 : }
97 270487 : if (feature & GENSEC_FEATURE_DCE_STYLE) {
98 144195 : return true;
99 : }
100 126292 : if (feature & GENSEC_FEATURE_ASYNC_REPLIES) {
101 21426 : if (ntlmssp_state->neg_flags & NTLMSSP_NEGOTIATE_NTLM2) {
102 20746 : return true;
103 : }
104 : }
105 105546 : if (feature & GENSEC_FEATURE_SIGN_PKT_HEADER) {
106 4040 : return true;
107 : }
108 101506 : if (feature & GENSEC_FEATURE_NEW_SPNEGO) {
109 71645 : if (!ntlmssp_state->session_key.length) {
110 28 : return false;
111 : }
112 71617 : if (!(ntlmssp_state->neg_flags & NTLMSSP_NEGOTIATE_SIGN)) {
113 368 : return false;
114 : }
115 71249 : return ntlmssp_state->new_spnego;
116 : }
117 :
118 29861 : return false;
119 : }
120 :
121 107639 : NTSTATUS gensec_ntlmssp_start(struct gensec_security *gensec_security)
122 : {
123 446 : struct gensec_ntlmssp_context *gensec_ntlmssp;
124 :
125 107639 : gensec_ntlmssp = talloc_zero(gensec_security,
126 : struct gensec_ntlmssp_context);
127 107639 : if (!gensec_ntlmssp) {
128 0 : return NT_STATUS_NO_MEMORY;
129 : }
130 :
131 107639 : gensec_security->private_data = gensec_ntlmssp;
132 107639 : return NT_STATUS_OK;
133 : }
134 :
135 78398 : NTSTATUS 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 : {
141 269 : struct gensec_ntlmssp_context *gensec_ntlmssp =
142 78398 : talloc_get_type_abort(gensec_security->private_data,
143 : struct gensec_ntlmssp_context);
144 269 : NTSTATUS nt_status;
145 :
146 78398 : 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 78398 : return nt_status;
153 : }
154 :
155 74557 : NTSTATUS 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 : {
160 261 : struct gensec_ntlmssp_context *gensec_ntlmssp =
161 74557 : talloc_get_type_abort(gensec_security->private_data,
162 : struct gensec_ntlmssp_context);
163 261 : NTSTATUS nt_status;
164 :
165 74557 : nt_status = ntlmssp_check_packet(gensec_ntlmssp->ntlmssp_state,
166 : data, length,
167 : whole_pdu, pdu_length,
168 : sig);
169 :
170 74557 : return nt_status;
171 : }
172 :
173 27747 : NTSTATUS 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 0 : struct gensec_ntlmssp_context *gensec_ntlmssp =
180 27747 : talloc_get_type_abort(gensec_security->private_data,
181 : struct gensec_ntlmssp_context);
182 0 : NTSTATUS nt_status;
183 :
184 27747 : 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 27747 : return nt_status;
191 : }
192 :
193 : /*
194 : wrappers for the ntlmssp_*() functions
195 : */
196 27738 : NTSTATUS 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 0 : struct gensec_ntlmssp_context *gensec_ntlmssp =
202 27738 : talloc_get_type_abort(gensec_security->private_data,
203 : struct gensec_ntlmssp_context);
204 0 : NTSTATUS nt_status;
205 :
206 27738 : nt_status = ntlmssp_unseal_packet(gensec_ntlmssp->ntlmssp_state,
207 : data, length,
208 : whole_pdu, pdu_length,
209 : sig);
210 :
211 27738 : return nt_status;
212 : }
213 :
214 39104 : size_t gensec_ntlmssp_sig_size(struct gensec_security *gensec_security, size_t data_size)
215 : {
216 39104 : return NTLMSSP_SIG_SIZE;
217 : }
218 :
219 456646 : NTSTATUS 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 0 : struct gensec_ntlmssp_context *gensec_ntlmssp =
225 456646 : talloc_get_type_abort(gensec_security->private_data,
226 : struct gensec_ntlmssp_context);
227 :
228 456646 : return ntlmssp_wrap(gensec_ntlmssp->ntlmssp_state,
229 : out_mem_ctx,
230 : in, out);
231 : }
232 :
233 :
234 456645 : NTSTATUS 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 0 : struct gensec_ntlmssp_context *gensec_ntlmssp =
240 456645 : talloc_get_type_abort(gensec_security->private_data,
241 : struct gensec_ntlmssp_context);
242 :
243 456645 : return ntlmssp_unwrap(gensec_ntlmssp->ntlmssp_state,
244 : out_mem_ctx,
245 : in, out);
246 : }
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