LXR linux/fs/cifs/ntlmssp.h

   1/*
   2 *   fs/cifs/ntlmssp.h
   3 *
   4 *   Copyright (c) International Business Machines  Corp., 2002,2007
   5 *   Author(s): Steve French (sfrench@us.ibm.com)
   6 *
   7 *   This library is free software; you can redistribute it and/or modify
   8 *   it under the terms of the GNU Lesser General Public License as published
   9 *   by the Free Software Foundation; either version 2.1 of the License, or
  10 *   (at your option) any later version.
  11 *
  12 *   This library is distributed in the hope that it will be useful,
  13 *   but WITHOUT ANY WARRANTY; without even the implied warranty of
  14 *   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See
  15 *   the GNU Lesser General Public License for more details.
  16 *
  17 *   You should have received a copy of the GNU Lesser General Public License
  18 *   along with this library; if not, write to the Free Software
  19 *   Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
  20 */
  21
  22#define NTLMSSP_SIGNATURE "NTLMSSP"
  23/* Message Types */
  24#define NtLmNegotiate     cpu_to_le32(1)
  25#define NtLmChallenge     cpu_to_le32(2)
  26#define NtLmAuthenticate  cpu_to_le32(3)
  27#define UnknownMessage    cpu_to_le32(8)
  28
  29/* Negotiate Flags */
  30#define NTLMSSP_NEGOTIATE_UNICODE       0x01 /* Text strings are in unicode */
  31#define NTLMSSP_NEGOTIATE_OEM           0x02 /* Text strings are in OEM */
  32#define NTLMSSP_REQUEST_TARGET          0x04 /* Server return its auth realm */
  33#define NTLMSSP_NEGOTIATE_SIGN        0x0010 /* Request signature capability */
  34#define NTLMSSP_NEGOTIATE_SEAL        0x0020 /*  Request confidentiality */
  35#define NTLMSSP_NEGOTIATE_DGRAM       0x0040
  36#define NTLMSSP_NEGOTIATE_LM_KEY      0x0080 /* Sign/seal use LM session key */
  37#define NTLMSSP_NEGOTIATE_NTLM        0x0200 /* NTLM authentication */
  38#define NTLMSSP_NEGOTIATE_DOMAIN_SUPPLIED 0x1000
  39#define NTLMSSP_NEGOTIATE_WORKSTATION_SUPPLIED 0x2000
  40#define NTLMSSP_NEGOTIATE_LOCAL_CALL  0x4000 /* client/server on same machine */
  41#define NTLMSSP_NEGOTIATE_ALWAYS_SIGN 0x8000 /* Sign for all security levels */
  42#define NTLMSSP_TARGET_TYPE_DOMAIN   0x10000
  43#define NTLMSSP_TARGET_TYPE_SERVER   0x20000
  44#define NTLMSSP_TARGET_TYPE_SHARE    0x40000
  45#define NTLMSSP_NEGOTIATE_NTLMV2     0x80000
  46#define NTLMSSP_REQUEST_INIT_RESP   0x100000
  47#define NTLMSSP_REQUEST_ACCEPT_RESP 0x200000
  48#define NTLMSSP_REQUEST_NOT_NT_KEY  0x400000
  49#define NTLMSSP_NEGOTIATE_TARGET_INFO 0x800000
  50#define NTLMSSP_NEGOTIATE_128     0x20000000
  51#define NTLMSSP_NEGOTIATE_KEY_XCH 0x40000000
  52#define NTLMSSP_NEGOTIATE_56      0x80000000
  53
  54/* Although typedefs are not commonly used for structure definitions */
  55/* in the Linux kernel, in this particular case they are useful      */
  56/* to more closely match the standards document for NTLMSSP from     */
  57/* OpenGroup and to make the code more closely match the standard in */
  58/* appearance */
  59
  60typedef struct _SECURITY_BUFFER {
  61        __le16 Length;
  62        __le16 MaximumLength;
  63        __le32 Buffer;          /* offset to buffer */
  64} __attribute__((packed)) SECURITY_BUFFER;
  65
  66typedef struct _NEGOTIATE_MESSAGE {
  67        __u8 Signature[sizeof (NTLMSSP_SIGNATURE)];
  68        __le32 MessageType;     /* 1 */
  69        __le32 NegotiateFlags;
  70        SECURITY_BUFFER DomainName;     /* RFC 1001 style and ASCII */
  71        SECURITY_BUFFER WorkstationName;        /* RFC 1001 and ASCII */
  72        char DomainString[0];
  73        /* followed by WorkstationString */
  74} __attribute__((packed)) NEGOTIATE_MESSAGE, *PNEGOTIATE_MESSAGE;
  75
  76typedef struct _CHALLENGE_MESSAGE {
  77        __u8 Signature[sizeof (NTLMSSP_SIGNATURE)];
  78        __le32 MessageType;   /* 2 */
  79        SECURITY_BUFFER TargetName;
  80        __le32 NegotiateFlags;
  81        __u8 Challenge[CIFS_CRYPTO_KEY_SIZE];
  82        __u8 Reserved[8];
  83        SECURITY_BUFFER TargetInfoArray;
  84} __attribute__((packed)) CHALLENGE_MESSAGE, *PCHALLENGE_MESSAGE;
  85
  86typedef struct _AUTHENTICATE_MESSAGE {
  87        __u8 Signature[sizeof (NTLMSSP_SIGNATURE)];
  88        __le32 MessageType;  /* 3 */
  89        SECURITY_BUFFER LmChallengeResponse;
  90        SECURITY_BUFFER NtChallengeResponse;
  91        SECURITY_BUFFER DomainName;
  92        SECURITY_BUFFER UserName;
  93        SECURITY_BUFFER WorkstationName;
  94        SECURITY_BUFFER SessionKey;
  95        __le32 NegotiateFlags;
  96        char UserString[0];
  97} __attribute__((packed)) AUTHENTICATE_MESSAGE, *PAUTHENTICATE_MESSAGE;
  98