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/*

 *   fs/cifs/ntlmssp.h

 *

 *   Copyright (c) International Business Machines  Corp., 2002,2007

 *   Author(s): Steve French (sfrench@us.ibm.com)

 *

 *   This library is free software; you can redistribute it and/or modify

 *   it under the terms of the GNU Lesser General Public License as published

 *   by the Free Software Foundation; either version 2.1 of the License, or

 *   (at your option) any later version.

 *

 *   This library 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 Lesser General Public License for more details.

 *

 *   You should have received a copy of the GNU Lesser General Public License

 *   along with this library; if not, write to the Free Software

 *   Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA

 */

#define NTLMSSP_SIGNATURE "NTLMSSP"

/* Message Types */

#define NtLmNegotiate     cpu_to_le32(1)

#define NtLmChallenge     cpu_to_le32(2)

#define NtLmAuthenticate  cpu_to_le32(3)

#define UnknownMessage    cpu_to_le32(8)

/* Negotiate Flags */

#define NTLMSSP_NEGOTIATE_UNICODE       0x01 /* Text strings are in unicode */

#define NTLMSSP_NEGOTIATE_OEM           0x02 /* Text strings are in OEM */

#define NTLMSSP_REQUEST_TARGET          0x04 /* Server return its auth realm */

#define NTLMSSP_NEGOTIATE_SIGN        0x0010 /* Request signature capability */

#define NTLMSSP_NEGOTIATE_SEAL        0x0020 /*  Request confidentiality */

#define NTLMSSP_NEGOTIATE_DGRAM       0x0040

#define NTLMSSP_NEGOTIATE_LM_KEY      0x0080 /* Sign/seal use LM session key */

#define NTLMSSP_NEGOTIATE_NTLM        0x0200 /* NTLM authentication */

#define NTLMSSP_NEGOTIATE_DOMAIN_SUPPLIED 0x1000

#define NTLMSSP_NEGOTIATE_WORKSTATION_SUPPLIED 0x2000

#define NTLMSSP_NEGOTIATE_LOCAL_CALL  0x4000 /* client/server on same machine */

#define NTLMSSP_NEGOTIATE_ALWAYS_SIGN 0x8000 /* Sign for all security levels */

#define NTLMSSP_TARGET_TYPE_DOMAIN   0x10000

#define NTLMSSP_TARGET_TYPE_SERVER   0x20000

#define NTLMSSP_TARGET_TYPE_SHARE    0x40000

#define NTLMSSP_NEGOTIATE_NTLMV2     0x80000

#define NTLMSSP_REQUEST_INIT_RESP   0x100000

#define NTLMSSP_REQUEST_ACCEPT_RESP 0x200000

#define NTLMSSP_REQUEST_NOT_NT_KEY  0x400000

#define NTLMSSP_NEGOTIATE_TARGET_INFO 0x800000

#define NTLMSSP_NEGOTIATE_128     0x20000000

#define NTLMSSP_NEGOTIATE_KEY_XCH 0x40000000

#define NTLMSSP_NEGOTIATE_56      0x80000000

/* Although typedefs are not commonly used for structure definitions */

/* in the Linux kernel, in this particular case they are useful      */

/* to more closely match the standards document for NTLMSSP from     */

/* OpenGroup and to make the code more closely match the standard in */

/* appearance */

typedef struct _SECURITY_BUFFER {

        __le16 Length;

        __le16 MaximumLength;

        __le32 Buffer;          /* offset to buffer */

} __attribute__((packed)) SECURITY_BUFFER;

typedef struct _NEGOTIATE_MESSAGE {

        __u8 Signature[sizeof (NTLMSSP_SIGNATURE)];

        __le32 MessageType;     /* 1 */

        __le32 NegotiateFlags;

        SECURITY_BUFFER DomainName;     /* RFC 1001 style and ASCII */

        SECURITY_BUFFER WorkstationName;        /* RFC 1001 and ASCII */

        char DomainString[0];

        /* followed by WorkstationString */

} __attribute__((packed)) NEGOTIATE_MESSAGE, *PNEGOTIATE_MESSAGE;

typedef struct _CHALLENGE_MESSAGE {

        __u8 Signature[sizeof (NTLMSSP_SIGNATURE)];

        __le32 MessageType;   /* 2 */

        SECURITY_BUFFER TargetName;

        __le32 NegotiateFlags;

        __u8 Challenge[CIFS_CRYPTO_KEY_SIZE];

        __u8 Reserved[8];

        SECURITY_BUFFER TargetInfoArray;

} __attribute__((packed)) CHALLENGE_MESSAGE, *PCHALLENGE_MESSAGE;

typedef struct _AUTHENTICATE_MESSAGE {

        __u8 Signature[sizeof (NTLMSSP_SIGNATURE)];

        __le32 MessageType;  /* 3 */

        SECURITY_BUFFER LmChallengeResponse;

        SECURITY_BUFFER NtChallengeResponse;

        SECURITY_BUFFER DomainName;

        SECURITY_BUFFER UserName;

        SECURITY_BUFFER WorkstationName;

        SECURITY_BUFFER SessionKey;

        __le32 NegotiateFlags;

        char UserString[0];

} __attribute__((packed)) AUTHENTICATE_MESSAGE, *PAUTHENTICATE_MESSAGE;