1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
|
/*
Unix SMB/CIFS implementation.
SMB parameters and setup
Copyright (C) Andrew Tridgell 1992-1997
Copyright (C) Luke Kenneth Casson Leighton 1996-1997
Copyright (C) Paul Ashton 1997
This program is free software; you can redistribute it and/or modify
it under the terms of the GNU General Public License as published by
the Free Software Foundation; either version 2 of the License, or
(at your option) any later version.
This program is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
GNU General Public License for more details.
You should have received a copy of the GNU General Public License
along with this program; if not, write to the Free Software
Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
*/
/* NTLMSSP mode */
enum NTLMSSP_ROLE
{
NTLMSSP_SERVER,
NTLMSSP_CLIENT
};
/* NTLMSSP message types */
enum NTLM_MESSAGE_TYPE
{
NTLMSSP_INITIAL = 0 /* samba internal state */,
NTLMSSP_NEGOTIATE = 1,
NTLMSSP_CHALLENGE = 2,
NTLMSSP_AUTH = 3,
NTLMSSP_UNKNOWN = 4,
NTLMSSP_DONE = 5 /* samba final state */
};
/* NTLMSSP negotiation flags */
#define NTLMSSP_NEGOTIATE_UNICODE 0x00000001
#define NTLMSSP_NEGOTIATE_OEM 0x00000002
#define NTLMSSP_REQUEST_TARGET 0x00000004
#define NTLMSSP_NEGOTIATE_SIGN 0x00000010 /* Message integrity */
#define NTLMSSP_NEGOTIATE_SEAL 0x00000020 /* Message confidentiality */
#define NTLMSSP_NEGOTIATE_DATAGRAM_STYLE 0x00000040
#define NTLMSSP_NEGOTIATE_LM_KEY 0x00000080
#define NTLMSSP_NEGOTIATE_NETWARE 0x00000100
#define NTLMSSP_NEGOTIATE_NTLM 0x00000200
#define NTLMSSP_NEGOTIATE_DOMAIN_SUPPLIED 0x00001000
#define NTLMSSP_NEGOTIATE_WORKSTATION_SUPPLIED 0x00002000
#define NTLMSSP_NEGOTIATE_THIS_IS_LOCAL_CALL 0x00004000
#define NTLMSSP_NEGOTIATE_ALWAYS_SIGN 0x00008000
#define NTLMSSP_TARGET_TYPE_DOMAIN 0x10000
#define NTLMSSP_TARGET_TYPE_SERVER 0x20000
#define NTLMSSP_CHAL_INIT_RESPONSE 0x00010000
#define NTLMSSP_CHAL_ACCEPT_RESPONSE 0x00020000
#define NTLMSSP_CHAL_NON_NT_SESSION_KEY 0x00040000
#define NTLMSSP_NEGOTIATE_NTLM2 0x00080000
#define NTLMSSP_CHAL_TARGET_INFO 0x00800000
#define NTLMSSP_UNKNOWN_02000000 0x02000000
#define NTLMSSP_NEGOTIATE_128 0x20000000 /* 128-bit encryption */
#define NTLMSSP_NEGOTIATE_KEY_EXCH 0x40000000
#define NTLMSSP_NEGOTIATE_56 0x80000000
#define NTLMSSP_NAME_TYPE_SERVER 0x01
#define NTLMSSP_NAME_TYPE_DOMAIN 0x02
#define NTLMSSP_NAME_TYPE_SERVER_DNS 0x03
#define NTLMSSP_NAME_TYPE_DOMAIN_DNS 0x04
#define NTLMSSP_SIG_SIZE 16
typedef struct ntlmssp_state
{
TALLOC_CTX *mem_ctx;
unsigned int ref_count;
enum NTLMSSP_ROLE role;
enum server_types server_role;
uint32 expected_state;
BOOL unicode;
BOOL use_ntlmv2;
char *user;
char *domain;
char *workstation;
char *password;
char *server_domain;
DATA_BLOB internal_chal; /* Random challenge as supplied to the client for NTLM authentication */
DATA_BLOB chal; /* Random challenge as input into the actual NTLM (or NTLM2) authentication */
DATA_BLOB lm_resp;
DATA_BLOB nt_resp;
DATA_BLOB session_key;
uint32 neg_flags; /* the current state of negotiation with the NTLMSSP partner */
void *auth_context;
/**
* Callback to get the 'challenge' used for NTLM authentication.
*
* @param ntlmssp_state This structure
* @return 8 bytes of challnege data, determined by the server to be the challenge for NTLM authentication
*
*/
const uint8 *(*get_challenge)(const struct ntlmssp_state *ntlmssp_state);
/**
* Callback to find if the challenge used by NTLM authentication may be modified
*
* The NTLM2 authentication scheme modifies the effective challenge, but this is not compatiable with the
* current 'security=server' implementation..
*
* @param ntlmssp_state This structure
* @return Can the challenge be set to arbitary values?
*
*/
BOOL (*may_set_challenge)(const struct ntlmssp_state *ntlmssp_state);
/**
* Callback to set the 'challenge' used for NTLM authentication.
*
* The callback may use the void *auth_context to store state information, but the same value is always available
* from the DATA_BLOB chal on this structure.
*
* @param ntlmssp_state This structure
* @param challenge 8 bytes of data, agreed by the client and server to be the effective challenge for NTLM2 authentication
*
*/
NTSTATUS (*set_challenge)(struct ntlmssp_state *ntlmssp_state, DATA_BLOB *challenge);
/**
* Callback to check the user's password.
*
* The callback must reads the feilds of this structure for the information it needs on the user
* @param ntlmssp_state This structure
* @param nt_session_key If an NT session key is returned by the authentication process, return it here
* @param lm_session_key If an LM session key is returned by the authentication process, return it here
*
*/
NTSTATUS (*check_password)(struct ntlmssp_state *ntlmssp_state, DATA_BLOB *nt_session_key, DATA_BLOB *lm_session_key);
const char *(*get_global_myname)(void);
const char *(*get_domain)(void);
/* ntlmv2 */
unsigned char send_sign_key[16];
unsigned char send_seal_key[16];
unsigned char recv_sign_key[16];
unsigned char recv_seal_key[16];
unsigned char send_seal_arc4_state[258];
unsigned char recv_seal_arc4_state[258];
uint32 ntlm2_send_seq_num;
uint32 ntlm2_recv_seq_num;
/* ntlmv1 */
unsigned char ntlmv1_arc4_state[258];
uint32 ntlmv1_seq_num;
/* it turns out that we don't always get the
response in at the time we want to process it.
Store it here, until we need it */
DATA_BLOB stored_response;
} NTLMSSP_STATE;
|
