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
70typedef struct _SECURITY_BUFFER {
71	__le16 Length;
72	__le16 MaximumLength;
73	__le32 BufferOffset;	/* offset to buffer */
74} __attribute__((packed)) SECURITY_BUFFER;
75
76typedef 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
88typedef 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
100typedef 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;
114