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
|
/*
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 3 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, see <http://www.gnu.org/licenses/>.
*/
/* 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 */
};
#define NTLMSSP_FEATURE_SESSION_KEY 0x00000001
#define NTLMSSP_FEATURE_SIGN 0x00000002
#define NTLMSSP_FEATURE_SEAL 0x00000004
typedef struct ntlmssp_state
{
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;
unsigned char *nt_hash;
unsigned char *lm_hash;
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
*
*/
void (*get_challenge)(const struct ntlmssp_state *ntlmssp_state,
uint8_t challenge[8]);
/**
* 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];
struct arcfour_state send_seal_arc4_state;
struct arcfour_state recv_seal_arc4_state;
uint32 ntlm2_send_seq_num;
uint32 ntlm2_recv_seq_num;
/* ntlmv1 */
struct arcfour_state ntlmv1_arc4_state;
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;
|
