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
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.
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.
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/>.
22 #include "../librpc/gen_ndr/ntlmssp.h"
31 /* NTLMSSP message types */
32 enum ntlmssp_message_type
34 NTLMSSP_INITIAL = 0 /* samba internal state */,
35 NTLMSSP_NEGOTIATE = 1,
36 NTLMSSP_CHALLENGE = 2,
39 NTLMSSP_DONE = 5 /* samba final state */
42 #define NTLMSSP_FEATURE_SESSION_KEY 0x00000001
43 #define NTLMSSP_FEATURE_SIGN 0x00000002
44 #define NTLMSSP_FEATURE_SEAL 0x00000004
45 #define NTLMSSP_FEATURE_CCACHE 0x00000008
47 struct gensec_ntlmssp_state
49 enum ntlmssp_role role;
50 uint32_t expected_state;
55 bool use_nt_response; /* Set to 'False' to debug what happens when the NT response is omited */
56 bool allow_lm_key; /* The LM_KEY code is not functional at this point, and it's not
59 bool server_multiple_authentications; /* Set to 'True' to allow squid 2.5
60 style 'challenge caching' */
64 const char *workstation;
68 const char *netbios_name;
69 const char *netbios_domain;
71 const char *dns_domain;
74 DATA_BLOB internal_chal; /* Random challenge as supplied to the client for NTLM authentication */
76 DATA_BLOB chal; /* Random challenge as input into the actual NTLM (or NTLM2) authentication */
79 DATA_BLOB session_key;
81 uint32_t neg_flags; /* the current state of negotiation with the NTLMSSP partner */
83 /* internal variables used by KEY_EXCH (client-supplied user session key */
84 DATA_BLOB encrypted_session_key;
87 * Private data for the callback functions
89 void *callback_private;
92 * Callback to get the 'challenge' used for NTLM authentication.
94 * @param ntlmssp_state This structure
95 * @return 8 bytes of challenge data, determined by the server to be the challenge for NTLM authentication
98 NTSTATUS (*get_challenge)(const struct gensec_ntlmssp_state *,
99 uint8_t challenge[8]);
102 * Callback to find if the challenge used by NTLM authentication may be modified
104 * The NTLM2 authentication scheme modifies the effective challenge, but this is not compatiable with the
105 * current 'security=server' implementation..
107 * @param ntlmssp_state This structure
108 * @return Can the challenge be set to arbitary values?
111 bool (*may_set_challenge)(const struct gensec_ntlmssp_state *);
114 * Callback to set the 'challenge' used for NTLM authentication.
116 * The callback may use the void *auth_context to store state information, but the same value is always available
117 * from the DATA_BLOB chal on this structure.
119 * @param ntlmssp_state This structure
120 * @param challenge 8 bytes of data, agreed by the client and server to be the effective challenge for NTLM2 authentication
123 NTSTATUS (*set_challenge)(struct gensec_ntlmssp_state *, DATA_BLOB *challenge);
126 * Callback to check the user's password.
128 * The callback must reads the feilds of this structure for the information it needs on the user
129 * @param ntlmssp_state This structure
130 * @param nt_session_key If an NT session key is returned by the authentication process, return it here
131 * @param lm_session_key If an LM session key is returned by the authentication process, return it here
134 NTSTATUS (*check_password)(struct gensec_ntlmssp_state *,
135 DATA_BLOB *nt_session_key, DATA_BLOB *lm_session_key);
143 struct arcfour_state *arcfour_state;
148 uint32_t send_seq_num;
149 uint32_t recv_seq_num;
150 DATA_BLOB send_sign_key;
151 DATA_BLOB recv_sign_key;
152 struct arcfour_state *send_seal_arcfour_state;
153 struct arcfour_state *recv_seal_arcfour_state;
155 /* internal variables used by NTLM2 */
156 uint8_t session_nonce[16];
161 struct gensec_ntlmssp_context {
162 struct gensec_security *gensec_security;
163 struct gensec_ntlmssp_state *ntlmssp_state;
164 struct auth_context *auth_context;
165 struct auth_serversupplied_info *server_info;
168 struct loadparm_context;
169 struct auth_session_info;
171 #include "auth/ntlmssp/proto.h"