source: branches/samba-3.0/source/include/ntlmssp.h@ 493

Last change on this file since 493 was 1, checked in by Paul Smedley, 18 years ago

Initial code import
File size: 6.0 KB
Line 
1/*
2 Unix SMB/CIFS implementation.
3 SMB parameters and setup
4 Copyright (C) Andrew Tridgell 1992-1997
5 Copyright (C) Luke Kenneth Casson Leighton 1996-1997
6 Copyright (C) Paul Ashton 1997
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 2 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, write to the Free Software
20 Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
21*/
22
23/* NTLMSSP mode */
24enum NTLMSSP_ROLE
25{
26 NTLMSSP_SERVER,
27 NTLMSSP_CLIENT
28};
29
30/* NTLMSSP message types */
31enum NTLM_MESSAGE_TYPE
32{
33 NTLMSSP_INITIAL = 0 /* samba internal state */,
34 NTLMSSP_NEGOTIATE = 1,
35 NTLMSSP_CHALLENGE = 2,
36 NTLMSSP_AUTH = 3,
37 NTLMSSP_UNKNOWN = 4,
38 NTLMSSP_DONE = 5 /* samba final state */
39};
40
41/* NTLMSSP negotiation flags */
42#define NTLMSSP_NEGOTIATE_UNICODE 0x00000001
43#define NTLMSSP_NEGOTIATE_OEM 0x00000002
44#define NTLMSSP_REQUEST_TARGET 0x00000004
45#define NTLMSSP_NEGOTIATE_SIGN 0x00000010 /* Message integrity */
46#define NTLMSSP_NEGOTIATE_SEAL 0x00000020 /* Message confidentiality */
47#define NTLMSSP_NEGOTIATE_DATAGRAM_STYLE 0x00000040
48#define NTLMSSP_NEGOTIATE_LM_KEY 0x00000080
49#define NTLMSSP_NEGOTIATE_NETWARE 0x00000100
50#define NTLMSSP_NEGOTIATE_NTLM 0x00000200
51#define NTLMSSP_NEGOTIATE_DOMAIN_SUPPLIED 0x00001000
52#define NTLMSSP_NEGOTIATE_WORKSTATION_SUPPLIED 0x00002000
53#define NTLMSSP_NEGOTIATE_THIS_IS_LOCAL_CALL 0x00004000
54#define NTLMSSP_NEGOTIATE_ALWAYS_SIGN 0x00008000
55#define NTLMSSP_TARGET_TYPE_DOMAIN 0x10000
56#define NTLMSSP_TARGET_TYPE_SERVER 0x20000
57#define NTLMSSP_CHAL_INIT_RESPONSE 0x00010000
58
59#define NTLMSSP_CHAL_ACCEPT_RESPONSE 0x00020000
60#define NTLMSSP_CHAL_NON_NT_SESSION_KEY 0x00040000
61#define NTLMSSP_NEGOTIATE_NTLM2 0x00080000
62#define NTLMSSP_CHAL_TARGET_INFO 0x00800000
63#define NTLMSSP_UNKNOWN_02000000 0x02000000
64#define NTLMSSP_NEGOTIATE_128 0x20000000 /* 128-bit encryption */
65#define NTLMSSP_NEGOTIATE_KEY_EXCH 0x40000000
66#define NTLMSSP_NEGOTIATE_56 0x80000000
67
68#define NTLMSSP_FEATURE_SESSION_KEY 0x00000001
69#define NTLMSSP_FEATURE_SIGN 0x00000002
70#define NTLMSSP_FEATURE_SEAL 0x00000004
71
72#define NTLMSSP_NAME_TYPE_SERVER 0x01
73#define NTLMSSP_NAME_TYPE_DOMAIN 0x02
74#define NTLMSSP_NAME_TYPE_SERVER_DNS 0x03
75#define NTLMSSP_NAME_TYPE_DOMAIN_DNS 0x04
76
77#define NTLMSSP_SIG_SIZE 16
78
79typedef struct ntlmssp_state
80{
81 TALLOC_CTX *mem_ctx;
82 unsigned int ref_count;
83 enum NTLMSSP_ROLE role;
84 enum server_types server_role;
85 uint32 expected_state;
86
87 BOOL unicode;
88 BOOL use_ntlmv2;
89 char *user;
90 char *domain;
91 char *workstation;
92 unsigned char *nt_hash;
93 unsigned char *lm_hash;
94 char *server_domain;
95
96 DATA_BLOB internal_chal; /* Random challenge as supplied to the client for NTLM authentication */
97
98 DATA_BLOB chal; /* Random challenge as input into the actual NTLM (or NTLM2) authentication */
99 DATA_BLOB lm_resp;
100 DATA_BLOB nt_resp;
101 DATA_BLOB session_key;
102
103 uint32 neg_flags; /* the current state of negotiation with the NTLMSSP partner */
104
105 void *auth_context;
106
107 /**
108 * Callback to get the 'challenge' used for NTLM authentication.
109 *
110 * @param ntlmssp_state This structure
111 * @return 8 bytes of challnege data, determined by the server to be the challenge for NTLM authentication
112 *
113 */
114 const uint8 *(*get_challenge)(const struct ntlmssp_state *ntlmssp_state);
115
116 /**
117 * Callback to find if the challenge used by NTLM authentication may be modified
118 *
119 * The NTLM2 authentication scheme modifies the effective challenge, but this is not compatiable with the
120 * current 'security=server' implementation..
121 *
122 * @param ntlmssp_state This structure
123 * @return Can the challenge be set to arbitary values?
124 *
125 */
126 BOOL (*may_set_challenge)(const struct ntlmssp_state *ntlmssp_state);
127
128 /**
129 * Callback to set the 'challenge' used for NTLM authentication.
130 *
131 * The callback may use the void *auth_context to store state information, but the same value is always available
132 * from the DATA_BLOB chal on this structure.
133 *
134 * @param ntlmssp_state This structure
135 * @param challenge 8 bytes of data, agreed by the client and server to be the effective challenge for NTLM2 authentication
136 *
137 */
138 NTSTATUS (*set_challenge)(struct ntlmssp_state *ntlmssp_state, DATA_BLOB *challenge);
139
140 /**
141 * Callback to check the user's password.
142 *
143 * The callback must reads the feilds of this structure for the information it needs on the user
144 * @param ntlmssp_state This structure
145 * @param nt_session_key If an NT session key is returned by the authentication process, return it here
146 * @param lm_session_key If an LM session key is returned by the authentication process, return it here
147 *
148 */
149 NTSTATUS (*check_password)(struct ntlmssp_state *ntlmssp_state, DATA_BLOB *nt_session_key, DATA_BLOB *lm_session_key);
150
151 const char *(*get_global_myname)(void);
152 const char *(*get_domain)(void);
153
154 /* ntlmv2 */
155
156 unsigned char send_sign_key[16];
157 unsigned char send_seal_key[16];
158 unsigned char recv_sign_key[16];
159 unsigned char recv_seal_key[16];
160
161 unsigned char send_seal_arc4_state[258];
162 unsigned char recv_seal_arc4_state[258];
163
164 uint32 ntlm2_send_seq_num;
165 uint32 ntlm2_recv_seq_num;
166
167 /* ntlmv1 */
168 unsigned char ntlmv1_arc4_state[258];
169 uint32 ntlmv1_seq_num;
170
171 /* it turns out that we don't always get the
172 response in at the time we want to process it.
173 Store it here, until we need it */
174 DATA_BLOB stored_response;
175
176} NTLMSSP_STATE;
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