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Unix SMB/CIFS implementation.
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SMB parameters and setup
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Copyright (C) Andrew Tridgell 1992-1997
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Copyright (C) Luke Kenneth Casson Leighton 1996-1997
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Copyright (C) Paul Ashton 1997
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This program is free software; you can redistribute it and/or modify
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it under the terms of the GNU General Public License as published by
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the Free Software Foundation; either version 3 of the License, or
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(at your option) any later version.
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This program is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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GNU General Public License for more details.
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You should have received a copy of the GNU General Public License
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along with this program. If not, see <http://www.gnu.org/licenses/>.
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/* NTLMSSP message types */
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enum NTLM_MESSAGE_TYPE
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NTLMSSP_INITIAL = 0 /* samba internal state */,
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NTLMSSP_NEGOTIATE = 1,
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NTLMSSP_CHALLENGE = 2,
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NTLMSSP_DONE = 5 /* samba final state */
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/* NTLMSSP negotiation flags */
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#define NTLMSSP_NEGOTIATE_UNICODE 0x00000001
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#define NTLMSSP_NEGOTIATE_OEM 0x00000002
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#define NTLMSSP_REQUEST_TARGET 0x00000004
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#define NTLMSSP_NEGOTIATE_SIGN 0x00000010 /* Message integrity */
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#define NTLMSSP_NEGOTIATE_SEAL 0x00000020 /* Message confidentiality */
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#define NTLMSSP_NEGOTIATE_DATAGRAM_STYLE 0x00000040
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#define NTLMSSP_NEGOTIATE_LM_KEY 0x00000080
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#define NTLMSSP_NEGOTIATE_NETWARE 0x00000100
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#define NTLMSSP_NEGOTIATE_NTLM 0x00000200
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#define NTLMSSP_NEGOTIATE_DOMAIN_SUPPLIED 0x00001000
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#define NTLMSSP_NEGOTIATE_WORKSTATION_SUPPLIED 0x00002000
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#define NTLMSSP_NEGOTIATE_THIS_IS_LOCAL_CALL 0x00004000
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#define NTLMSSP_NEGOTIATE_ALWAYS_SIGN 0x00008000
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#define NTLMSSP_TARGET_TYPE_DOMAIN 0x10000
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#define NTLMSSP_TARGET_TYPE_SERVER 0x20000
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#define NTLMSSP_CHAL_INIT_RESPONSE 0x00010000
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#define NTLMSSP_CHAL_ACCEPT_RESPONSE 0x00020000
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#define NTLMSSP_CHAL_NON_NT_SESSION_KEY 0x00040000
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#define NTLMSSP_NEGOTIATE_NTLM2 0x00080000
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#define NTLMSSP_CHAL_TARGET_INFO 0x00800000
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#define NTLMSSP_NEGOTIATE_VERSION 0x02000000
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#define NTLMSSP_NEGOTIATE_128 0x20000000 /* 128-bit encryption */
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#define NTLMSSP_NEGOTIATE_KEY_EXCH 0x40000000
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#define NTLMSSP_NEGOTIATE_56 0x80000000
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#define NTLMSSP_FEATURE_SESSION_KEY 0x00000001
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#define NTLMSSP_FEATURE_SIGN 0x00000002
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#define NTLMSSP_FEATURE_SEAL 0x00000004
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#define NTLMSSP_NAME_TYPE_SERVER 0x01
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#define NTLMSSP_NAME_TYPE_DOMAIN 0x02
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#define NTLMSSP_NAME_TYPE_SERVER_DNS 0x03
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#define NTLMSSP_NAME_TYPE_DOMAIN_DNS 0x04
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#define NTLMSSP_SIG_SIZE 16
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typedef struct ntlmssp_state
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unsigned int ref_count;
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enum NTLMSSP_ROLE role;
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enum server_types server_role;
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uint32 expected_state;
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unsigned char *nt_hash;
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unsigned char *lm_hash;
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DATA_BLOB internal_chal; /* Random challenge as supplied to the client for NTLM authentication */
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DATA_BLOB chal; /* Random challenge as input into the actual NTLM (or NTLM2) authentication */
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DATA_BLOB session_key;
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uint32 neg_flags; /* the current state of negotiation with the NTLMSSP partner */
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* Callback to get the 'challenge' used for NTLM authentication.
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* @param ntlmssp_state This structure
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* @return 8 bytes of challnege data, determined by the server to be the challenge for NTLM authentication
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void (*get_challenge)(const struct ntlmssp_state *ntlmssp_state,
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uint8_t challenge[8]);
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* Callback to find if the challenge used by NTLM authentication may be modified
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* The NTLM2 authentication scheme modifies the effective challenge, but this is not compatiable with the
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* current 'security=server' implementation..
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* @param ntlmssp_state This structure
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* @return Can the challenge be set to arbitary values?
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bool (*may_set_challenge)(const struct ntlmssp_state *ntlmssp_state);
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* Callback to set the 'challenge' used for NTLM authentication.
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* The callback may use the void *auth_context to store state information, but the same value is always available
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* from the DATA_BLOB chal on this structure.
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* @param ntlmssp_state This structure
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* @param challenge 8 bytes of data, agreed by the client and server to be the effective challenge for NTLM2 authentication
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NTSTATUS (*set_challenge)(struct ntlmssp_state *ntlmssp_state, DATA_BLOB *challenge);
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* Callback to check the user's password.
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* The callback must reads the feilds of this structure for the information it needs on the user
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* @param ntlmssp_state This structure
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* @param nt_session_key If an NT session key is returned by the authentication process, return it here
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* @param lm_session_key If an LM session key is returned by the authentication process, return it here
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NTSTATUS (*check_password)(struct ntlmssp_state *ntlmssp_state, DATA_BLOB *nt_session_key, DATA_BLOB *lm_session_key);
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const char *(*get_global_myname)(void);
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const char *(*get_domain)(void);
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unsigned char send_sign_key[16];
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unsigned char send_seal_key[16];
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unsigned char recv_sign_key[16];
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unsigned char recv_seal_key[16];
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struct arcfour_state send_seal_arc4_state;
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struct arcfour_state recv_seal_arc4_state;
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uint32 ntlm2_send_seq_num;
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uint32 ntlm2_recv_seq_num;
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struct arcfour_state ntlmv1_arc4_state;
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uint32 ntlmv1_seq_num;
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/* it turns out that we don't always get the
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response in at the time we want to process it.
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Store it here, until we need it */
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DATA_BLOB stored_response;