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/samr.h"
23 #include "../librpc/gen_ndr/ntlmssp.h"
32 /* NTLMSSP message types */
33 enum ntlmssp_message_type
35 NTLMSSP_INITIAL = 0 /* samba internal state */,
36 NTLMSSP_NEGOTIATE = 1,
37 NTLMSSP_CHALLENGE = 2,
40 NTLMSSP_DONE = 5 /* samba final state */
43 struct gensec_ntlmssp_state
45 enum ntlmssp_role role;
46 enum samr_Role server_role;
47 uint32_t expected_state;
51 bool use_nt_response; /* Set to 'False' to debug what happens when the NT response is omited */
52 bool allow_lm_key; /* The LM_KEY code is not functional at this point, and it's not
55 bool server_multiple_authentications; /* Set to 'True' to allow squid 2.5
56 style 'challenge caching' */
60 const char *workstation;
63 DATA_BLOB internal_chal; /* Random challenge as supplied to the client for NTLM authentication */
65 DATA_BLOB chal; /* Random challenge as input into the actual NTLM (or NTLM2) authentication */
68 DATA_BLOB session_key;
70 uint32_t neg_flags; /* the current state of negotiation with the NTLMSSP partner */
72 /* internal variables used by KEY_EXCH (client-supplied user session key */
73 DATA_BLOB encrypted_session_key;
76 * Private data for the callback functions
78 void *callback_private;
81 * Callback to get the 'challenge' used for NTLM authentication.
83 * @param ntlmssp_state This structure
84 * @return 8 bytes of challenge data, determined by the server to be the challenge for NTLM authentication
87 NTSTATUS (*get_challenge)(const struct gensec_ntlmssp_state *,
88 uint8_t challenge[8]);
91 * Callback to find if the challenge used by NTLM authentication may be modified
93 * The NTLM2 authentication scheme modifies the effective challenge, but this is not compatiable with the
94 * current 'security=server' implementation..
96 * @param ntlmssp_state This structure
97 * @return Can the challenge be set to arbitary values?
100 bool (*may_set_challenge)(const struct gensec_ntlmssp_state *);
103 * Callback to set the 'challenge' used for NTLM authentication.
105 * The callback may use the void *auth_context to store state information, but the same value is always available
106 * from the DATA_BLOB chal on this structure.
108 * @param ntlmssp_state This structure
109 * @param challenge 8 bytes of data, agreed by the client and server to be the effective challenge for NTLM2 authentication
112 NTSTATUS (*set_challenge)(struct gensec_ntlmssp_state *, DATA_BLOB *challenge);
115 * Callback to check the user's password.
117 * The callback must reads the feilds of this structure for the information it needs on the user
118 * @param ntlmssp_state This structure
119 * @param nt_session_key If an NT session key is returned by the authentication process, return it here
120 * @param lm_session_key If an LM session key is returned by the authentication process, return it here
123 NTSTATUS (*check_password)(struct gensec_ntlmssp_state *,
124 DATA_BLOB *nt_session_key, DATA_BLOB *lm_session_key);
126 const char *server_name;
134 struct arcfour_state *arcfour_state;
139 uint32_t send_seq_num;
140 uint32_t recv_seq_num;
141 DATA_BLOB send_sign_key;
142 DATA_BLOB recv_sign_key;
143 struct arcfour_state *send_seal_arcfour_state;
144 struct arcfour_state *recv_seal_arcfour_state;
146 /* internal variables used by NTLM2 */
147 uint8_t session_nonce[16];
152 struct gensec_ntlmssp_context {
153 struct gensec_security *gensec_security;
154 struct gensec_ntlmssp_state *ntlmssp_state;
155 struct auth_context *auth_context;
156 struct auth_serversupplied_info *server_info;
159 struct loadparm_context;
160 struct auth_session_info;
162 #include "auth/ntlmssp/proto.h"