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 unicode */
  31 #define NTLMSSP_NEGOTIATE_OEM             0x02 /* Text strings are in OEM */
  32 #define NTLMSSP_REQUEST_TARGET            0x04 /* Srv returns its auth realm */
  33 /* define reserved9                       0x08 */
  34 #define NTLMSSP_NEGOTIATE_SIGN          0x0010 /* Request signing capability */
  35 #define NTLMSSP_NEGOTIATE_SEAL          0x0020 /* Request confidentiality */
  36 #define NTLMSSP_NEGOTIATE_DGRAM         0x0040
  37 #define NTLMSSP_NEGOTIATE_LM_KEY        0x0080 /* Use LM session key */
  38 /* defined reserved 8                   0x0100 */
  39 #define NTLMSSP_NEGOTIATE_NTLM          0x0200 /* NTLM authentication */
  40 #define NTLMSSP_NEGOTIATE_NT_ONLY       0x0400 /* Lanman not allowed */
  41 #define NTLMSSP_ANONYMOUS               0x0800
  42 #define NTLMSSP_NEGOTIATE_DOMAIN_SUPPLIED 0x1000 /* reserved6 */
  43 #define NTLMSSP_NEGOTIATE_WORKSTATION_SUPPLIED 0x2000
  44 #define NTLMSSP_NEGOTIATE_LOCAL_CALL    0x4000 /* client/server same machine */
  45 #define NTLMSSP_NEGOTIATE_ALWAYS_SIGN   0x8000 /* Sign. All security levels  */
  46 #define NTLMSSP_TARGET_TYPE_DOMAIN     0x10000
  47 #define NTLMSSP_TARGET_TYPE_SERVER     0x20000
  48 #define NTLMSSP_TARGET_TYPE_SHARE      0x40000
  49 #define NTLMSSP_NEGOTIATE_EXTENDED_SEC 0x80000 /* NB:not related to NTLMv2 pwd*/
  50 /* #define NTLMSSP_REQUEST_INIT_RESP     0x100000 */
  51 #define NTLMSSP_NEGOTIATE_IDENTIFY    0x100000
  52 #define NTLMSSP_REQUEST_ACCEPT_RESP   0x200000 /* reserved5 */
  53 #define NTLMSSP_REQUEST_NON_NT_KEY    0x400000
  54 #define NTLMSSP_NEGOTIATE_TARGET_INFO 0x800000
  55 /* #define reserved4                 0x1000000 */
  56 #define NTLMSSP_NEGOTIATE_VERSION    0x2000000 /* we do not set */
  57 /* #define reserved3                 0x4000000 */
  58 /* #define reserved2                 0x8000000 */
  59 /* #define reserved1                0x10000000 */
  60 #define NTLMSSP_NEGOTIATE_128       0x20000000
  61 #define NTLMSSP_NEGOTIATE_KEY_XCH   0x40000000
  62 #define NTLMSSP_NEGOTIATE_56        0x80000000
  63
  64 /* Although typedefs are not commonly used for structure definitions */
  65 /* in the Linux kernel, in this particular case they are useful      */
  66 /* to more closely match the standards document for NTLMSSP from     */
  67 /* OpenGroup and to make the code more closely match the standard in */
  68 /* appearance */
  69
  70 typedef struct _SECURITY_BUFFER {
  71         __le16 Length;
  72         __le16 MaximumLength;
  73         __le32 BufferOffset;    /* offset to buffer */
  74 } __attribute__((packed)) SECURITY_BUFFER;
  75
  76 typedef struct _NEGOTIATE_MESSAGE {
  77         __u8 Signature[sizeof(NTLMSSP_SIGNATURE)];
  78         __le32 MessageType;     /* NtLmNegotiate = 1 */
  79         __le32 NegotiateFlags;
  80         SECURITY_BUFFER DomainName;     /* RFC 1001 style and ASCII */
  81         SECURITY_BUFFER WorkstationName;        /* RFC 1001 and ASCII */
  82         /* SECURITY_BUFFER for version info not present since we
  83            do not set the version is present flag */
  84         char DomainString[0];
  85         /* followed by WorkstationString */
  86 } __attribute__((packed)) NEGOTIATE_MESSAGE, *PNEGOTIATE_MESSAGE;
  87
  88 typedef struct _CHALLENGE_MESSAGE {
  89         __u8 Signature[sizeof(NTLMSSP_SIGNATURE)];
  90         __le32 MessageType;   /* NtLmChallenge = 2 */
  91         SECURITY_BUFFER TargetName;
  92         __le32 NegotiateFlags;
  93         __u8 Challenge[CIFS_CRYPTO_KEY_SIZE];
  94         __u8 Reserved[8];
  95         SECURITY_BUFFER TargetInfoArray;
  96         /* SECURITY_BUFFER for version info not present since we
  97            do not set the version is present flag */
  98 } __attribute__((packed)) CHALLENGE_MESSAGE, *PCHALLENGE_MESSAGE;
  99
 100 typedef struct _AUTHENTICATE_MESSAGE {
 101         __u8 Signature[sizeof(NTLMSSP_SIGNATURE)];
 102         __le32 MessageType;  /* NtLmsAuthenticate = 3 */
 103         SECURITY_BUFFER LmChallengeResponse;
 104         SECURITY_BUFFER NtChallengeResponse;
 105         SECURITY_BUFFER DomainName;
 106         SECURITY_BUFFER UserName;
 107         SECURITY_BUFFER WorkstationName;
 108         SECURITY_BUFFER SessionKey;
 109         __le32 NegotiateFlags;
 110         /* SECURITY_BUFFER for version info not present since we
 111            do not set the version is present flag */
 112         char UserString[0];
 113 } __attribute__((packed)) AUTHENTICATE_MESSAGE, *PAUTHENTICATE_MESSAGE;