/* 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 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_NEGOTIATE_128 0x20000000 /* 128-bit encryption */ #define NTLMSSP_NEGOTIATE_KEY_EXCH 0x40000000 #define NTLMSSP_NEGOTIATE_080000000 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 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 challange 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); /* SMB Signing */ uint32 ntlmssp_seq_num; /* ntlmv2 */ unsigned char send_sign_const[16]; unsigned char send_seal_const[16]; unsigned char recv_sign_const[16]; unsigned char recv_seal_const[16]; unsigned char send_sign_hash[258]; unsigned char send_seal_hash[258]; unsigned char recv_sign_hash[258]; unsigned char recv_seal_hash[258]; /* ntlmv1 */ unsigned char ntlmssp_hash[258]; /* 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;