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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#pragma pack(1)
23
24#define NTLMSSP_SIGNATURE "NTLMSSP"
25/* Message Types */
26#define NtLmNegotiate cpu_to_le32(1)
27#define NtLmChallenge cpu_to_le32(2)
28#define NtLmAuthenticate cpu_to_le32(3)
29#define UnknownMessage cpu_to_le32(8)
30
31/* Negotiate Flags */
32#define NTLMSSP_NEGOTIATE_UNICODE 0x01 // Text strings are in unicode
33#define NTLMSSP_NEGOTIATE_OEM 0x02 // Text strings are in OEM
34#define NTLMSSP_REQUEST_TARGET 0x04 // Server return its auth realm
35#define NTLMSSP_NEGOTIATE_SIGN 0x0010 // Request signature capability
36#define NTLMSSP_NEGOTIATE_SEAL 0x0020 // Request confidentiality
37#define NTLMSSP_NEGOTIATE_DGRAM 0x0040
38#define NTLMSSP_NEGOTIATE_LM_KEY 0x0080 // Use LM session key for sign/seal
39#define NTLMSSP_NEGOTIATE_NTLM 0x0200 // NTLM authentication
40#define NTLMSSP_NEGOTIATE_DOMAIN_SUPPLIED 0x1000
41#define NTLMSSP_NEGOTIATE_WORKSTATION_SUPPLIED 0x2000
42#define NTLMSSP_NEGOTIATE_LOCAL_CALL 0x4000 // client/server on same machine
43#define NTLMSSP_NEGOTIATE_ALWAYS_SIGN 0x8000 // Sign for all security levels
44#define NTLMSSP_TARGET_TYPE_DOMAIN 0x10000
45#define NTLMSSP_TARGET_TYPE_SERVER 0x20000
46#define NTLMSSP_TARGET_TYPE_SHARE 0x40000
47#define NTLMSSP_NEGOTIATE_NTLMV2 0x80000
48#define NTLMSSP_REQUEST_INIT_RESP 0x100000
49#define NTLMSSP_REQUEST_ACCEPT_RESP 0x200000
50#define NTLMSSP_REQUEST_NOT_NT_KEY 0x400000
51#define NTLMSSP_NEGOTIATE_TARGET_INFO 0x800000
52#define NTLMSSP_NEGOTIATE_128 0x20000000
53#define NTLMSSP_NEGOTIATE_KEY_XCH 0x40000000
54#define NTLMSSP_NEGOTIATE_56 0x80000000
55
56/* Although typedefs are not commonly used for structure definitions */
57/* in the Linux kernel, in this particular case they are useful */
58/* to more closely match the standards document for NTLMSSP from */
59/* OpenGroup and to make the code more closely match the standard in */
60/* appearance */
61
62typedef struct _SECURITY_BUFFER {
63 __le16 Length;
64 __le16 MaximumLength;
65 __le32 Buffer; /* offset to buffer */
66} SECURITY_BUFFER;
67
68typedef struct _NEGOTIATE_MESSAGE {
69 __u8 Signature[sizeof (NTLMSSP_SIGNATURE)];
70 __le32 MessageType; /* 1 */
71 __le32 NegotiateFlags;
72 SECURITY_BUFFER DomainName; /* RFC 1001 style and ASCII */
73 SECURITY_BUFFER WorkstationName; /* RFC 1001 and ASCII */
74 char DomainString[0];
75 /* followed by WorkstationString */
76} NEGOTIATE_MESSAGE, *PNEGOTIATE_MESSAGE;
77
78typedef struct _CHALLENGE_MESSAGE {
79 __u8 Signature[sizeof (NTLMSSP_SIGNATURE)];
80 __le32 MessageType; /* 2 */
81 SECURITY_BUFFER TargetName;
82 __le32 NegotiateFlags;
83 __u8 Challenge[CIFS_CRYPTO_KEY_SIZE];
84 __u8 Reserved[8];
85 SECURITY_BUFFER TargetInfoArray;
86} CHALLENGE_MESSAGE, *PCHALLENGE_MESSAGE;
87
88typedef struct _AUTHENTICATE_MESSAGE {
89 __u8 Signature[sizeof (NTLMSSP_SIGNATURE)];
90 __le32 MessageType; /* 3 */
91 SECURITY_BUFFER LmChallengeResponse;
92 SECURITY_BUFFER NtChallengeResponse;
93 SECURITY_BUFFER DomainName;
94 SECURITY_BUFFER UserName;
95 SECURITY_BUFFER WorkstationName;
96 SECURITY_BUFFER SessionKey;
97 __le32 NegotiateFlags;
98 char UserString[0];
99} AUTHENTICATE_MESSAGE, *PAUTHENTICATE_MESSAGE;
100
101#pragma pack() /* resume default structure packing */