fs/cifs/ntlmssp.h

   1 /*
   2  *   fs/cifs/ntlmssp.h
   3  *
   4  *   Copyright (c) International Business Machines  Corp., 2002
   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 // Use LM session key for sign/seal
  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
  60 typedef struct _SECURITY_BUFFER {
  61         __le16 Length;
  62         __le16 MaximumLength;
  63         __le32 Buffer;          /* offset to buffer */
  64 } __attribute__((packed)) SECURITY_BUFFER;
  65
  66 typedef 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
  76 typedef 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
  86 typedef 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;