Loading...
1/* SPDX-License-Identifier: LGPL-2.1 */
2/*
3 *
4 * Copyright (c) International Business Machines Corp., 2002,2007
5 * Author(s): Steve French (sfrench@us.ibm.com)
6 *
7 */
8
9#define NTLMSSP_SIGNATURE "NTLMSSP"
10/* Message Types */
11#define NtLmNegotiate cpu_to_le32(1)
12#define NtLmChallenge cpu_to_le32(2)
13#define NtLmAuthenticate cpu_to_le32(3)
14#define UnknownMessage cpu_to_le32(8)
15
16/* Negotiate Flags */
17#define NTLMSSP_NEGOTIATE_UNICODE 0x01 /* Text strings are unicode */
18#define NTLMSSP_NEGOTIATE_OEM 0x02 /* Text strings are in OEM */
19#define NTLMSSP_REQUEST_TARGET 0x04 /* Srv returns its auth realm */
20/* define reserved9 0x08 */
21#define NTLMSSP_NEGOTIATE_SIGN 0x0010 /* Request signing capability */
22#define NTLMSSP_NEGOTIATE_SEAL 0x0020 /* Request confidentiality */
23#define NTLMSSP_NEGOTIATE_DGRAM 0x0040
24#define NTLMSSP_NEGOTIATE_LM_KEY 0x0080 /* Use LM session key */
25/* defined reserved 8 0x0100 */
26#define NTLMSSP_NEGOTIATE_NTLM 0x0200 /* NTLM authentication */
27#define NTLMSSP_NEGOTIATE_NT_ONLY 0x0400 /* Lanman not allowed */
28#define NTLMSSP_ANONYMOUS 0x0800
29#define NTLMSSP_NEGOTIATE_DOMAIN_SUPPLIED 0x1000 /* reserved6 */
30#define NTLMSSP_NEGOTIATE_WORKSTATION_SUPPLIED 0x2000
31#define NTLMSSP_NEGOTIATE_LOCAL_CALL 0x4000 /* client/server same machine */
32#define NTLMSSP_NEGOTIATE_ALWAYS_SIGN 0x8000 /* Sign. All security levels */
33#define NTLMSSP_TARGET_TYPE_DOMAIN 0x10000
34#define NTLMSSP_TARGET_TYPE_SERVER 0x20000
35#define NTLMSSP_TARGET_TYPE_SHARE 0x40000
36#define NTLMSSP_NEGOTIATE_EXTENDED_SEC 0x80000 /* NB:not related to NTLMv2 pwd*/
37/* #define NTLMSSP_REQUEST_INIT_RESP 0x100000 */
38#define NTLMSSP_NEGOTIATE_IDENTIFY 0x100000
39#define NTLMSSP_REQUEST_ACCEPT_RESP 0x200000 /* reserved5 */
40#define NTLMSSP_REQUEST_NON_NT_KEY 0x400000
41#define NTLMSSP_NEGOTIATE_TARGET_INFO 0x800000
42/* #define reserved4 0x1000000 */
43#define NTLMSSP_NEGOTIATE_VERSION 0x2000000 /* we only set for SMB2+ */
44/* #define reserved3 0x4000000 */
45/* #define reserved2 0x8000000 */
46/* #define reserved1 0x10000000 */
47#define NTLMSSP_NEGOTIATE_128 0x20000000
48#define NTLMSSP_NEGOTIATE_KEY_XCH 0x40000000
49#define NTLMSSP_NEGOTIATE_56 0x80000000
50
51/* Define AV Pair Field IDs */
52enum av_field_type {
53 NTLMSSP_AV_EOL = 0,
54 NTLMSSP_AV_NB_COMPUTER_NAME,
55 NTLMSSP_AV_NB_DOMAIN_NAME,
56 NTLMSSP_AV_DNS_COMPUTER_NAME,
57 NTLMSSP_AV_DNS_DOMAIN_NAME,
58 NTLMSSP_AV_DNS_TREE_NAME,
59 NTLMSSP_AV_FLAGS,
60 NTLMSSP_AV_TIMESTAMP,
61 NTLMSSP_AV_RESTRICTION,
62 NTLMSSP_AV_TARGET_NAME,
63 NTLMSSP_AV_CHANNEL_BINDINGS
64};
65
66/* Although typedefs are not commonly used for structure definitions */
67/* in the Linux kernel, in this particular case they are useful */
68/* to more closely match the standards document for NTLMSSP from */
69/* OpenGroup and to make the code more closely match the standard in */
70/* appearance */
71
72typedef struct _SECURITY_BUFFER {
73 __le16 Length;
74 __le16 MaximumLength;
75 __le32 BufferOffset; /* offset to buffer */
76} __attribute__((packed)) SECURITY_BUFFER;
77
78typedef struct _NEGOTIATE_MESSAGE {
79 __u8 Signature[sizeof(NTLMSSP_SIGNATURE)];
80 __le32 MessageType; /* NtLmNegotiate = 1 */
81 __le32 NegotiateFlags;
82 SECURITY_BUFFER DomainName; /* RFC 1001 style and ASCII */
83 SECURITY_BUFFER WorkstationName; /* RFC 1001 and ASCII */
84 /* SECURITY_BUFFER for version info not present since we
85 do not set the version is present flag */
86 char DomainString[0];
87 /* followed by WorkstationString */
88} __attribute__((packed)) NEGOTIATE_MESSAGE, *PNEGOTIATE_MESSAGE;
89
90#define NTLMSSP_REVISION_W2K3 0x0F
91
92/* See MS-NLMP section 2.2.2.10 */
93struct ntlmssp_version {
94 __u8 ProductMajorVersion;
95 __u8 ProductMinorVersion;
96 __le16 ProductBuild; /* we send the cifs.ko module version here */
97 __u8 Reserved[3];
98 __u8 NTLMRevisionCurrent; /* currently 0x0F */
99} __packed;
100
101/* see MS-NLMP section 2.2.1.1 */
102struct negotiate_message {
103 __u8 Signature[sizeof(NTLMSSP_SIGNATURE)];
104 __le32 MessageType; /* NtLmNegotiate = 1 */
105 __le32 NegotiateFlags;
106 SECURITY_BUFFER DomainName; /* RFC 1001 style and ASCII */
107 SECURITY_BUFFER WorkstationName; /* RFC 1001 and ASCII */
108 struct ntlmssp_version Version;
109 /* SECURITY_BUFFER */
110 char DomainString[];
111 /* followed by WorkstationString */
112} __packed;
113
114typedef struct _CHALLENGE_MESSAGE {
115 __u8 Signature[sizeof(NTLMSSP_SIGNATURE)];
116 __le32 MessageType; /* NtLmChallenge = 2 */
117 SECURITY_BUFFER TargetName;
118 __le32 NegotiateFlags;
119 __u8 Challenge[CIFS_CRYPTO_KEY_SIZE];
120 __u8 Reserved[8];
121 SECURITY_BUFFER TargetInfoArray;
122 /* SECURITY_BUFFER for version info not present since we
123 do not set the version is present flag */
124} __attribute__((packed)) CHALLENGE_MESSAGE, *PCHALLENGE_MESSAGE;
125
126typedef struct _AUTHENTICATE_MESSAGE {
127 __u8 Signature[sizeof(NTLMSSP_SIGNATURE)];
128 __le32 MessageType; /* NtLmsAuthenticate = 3 */
129 SECURITY_BUFFER LmChallengeResponse;
130 SECURITY_BUFFER NtChallengeResponse;
131 SECURITY_BUFFER DomainName;
132 SECURITY_BUFFER UserName;
133 SECURITY_BUFFER WorkstationName;
134 SECURITY_BUFFER SessionKey;
135 __le32 NegotiateFlags;
136 /* SECURITY_BUFFER for version info not present since we
137 do not set the version is present flag */
138 char UserString[0];
139} __attribute__((packed)) AUTHENTICATE_MESSAGE, *PAUTHENTICATE_MESSAGE;
140
141/*
142 * Size of the session key (crypto key encrypted with the password
143 */
144
145int decode_ntlmssp_challenge(char *bcc_ptr, int blob_len, struct cifs_ses *ses);
146int build_ntlmssp_negotiate_blob(unsigned char **pbuffer, u16 *buflen,
147 struct cifs_ses *ses,
148 struct TCP_Server_Info *server,
149 const struct nls_table *nls_cp);
150int build_ntlmssp_smb3_negotiate_blob(unsigned char **pbuffer, u16 *buflen,
151 struct cifs_ses *ses,
152 struct TCP_Server_Info *server,
153 const struct nls_table *nls_cp);
154int build_ntlmssp_auth_blob(unsigned char **pbuffer, u16 *buflen,
155 struct cifs_ses *ses,
156 struct TCP_Server_Info *server,
157 const struct nls_table *nls_cp);
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/* Define AV Pair Field IDs */
65enum av_field_type {
66 NTLMSSP_AV_EOL = 0,
67 NTLMSSP_AV_NB_COMPUTER_NAME,
68 NTLMSSP_AV_NB_DOMAIN_NAME,
69 NTLMSSP_AV_DNS_COMPUTER_NAME,
70 NTLMSSP_AV_DNS_DOMAIN_NAME,
71 NTLMSSP_AV_DNS_TREE_NAME,
72 NTLMSSP_AV_FLAGS,
73 NTLMSSP_AV_TIMESTAMP,
74 NTLMSSP_AV_RESTRICTION,
75 NTLMSSP_AV_TARGET_NAME,
76 NTLMSSP_AV_CHANNEL_BINDINGS
77};
78
79/* Although typedefs are not commonly used for structure definitions */
80/* in the Linux kernel, in this particular case they are useful */
81/* to more closely match the standards document for NTLMSSP from */
82/* OpenGroup and to make the code more closely match the standard in */
83/* appearance */
84
85typedef struct _SECURITY_BUFFER {
86 __le16 Length;
87 __le16 MaximumLength;
88 __le32 BufferOffset; /* offset to buffer */
89} __attribute__((packed)) SECURITY_BUFFER;
90
91typedef struct _NEGOTIATE_MESSAGE {
92 __u8 Signature[sizeof(NTLMSSP_SIGNATURE)];
93 __le32 MessageType; /* NtLmNegotiate = 1 */
94 __le32 NegotiateFlags;
95 SECURITY_BUFFER DomainName; /* RFC 1001 style and ASCII */
96 SECURITY_BUFFER WorkstationName; /* RFC 1001 and ASCII */
97 /* SECURITY_BUFFER for version info not present since we
98 do not set the version is present flag */
99 char DomainString[0];
100 /* followed by WorkstationString */
101} __attribute__((packed)) NEGOTIATE_MESSAGE, *PNEGOTIATE_MESSAGE;
102
103typedef struct _CHALLENGE_MESSAGE {
104 __u8 Signature[sizeof(NTLMSSP_SIGNATURE)];
105 __le32 MessageType; /* NtLmChallenge = 2 */
106 SECURITY_BUFFER TargetName;
107 __le32 NegotiateFlags;
108 __u8 Challenge[CIFS_CRYPTO_KEY_SIZE];
109 __u8 Reserved[8];
110 SECURITY_BUFFER TargetInfoArray;
111 /* SECURITY_BUFFER for version info not present since we
112 do not set the version is present flag */
113} __attribute__((packed)) CHALLENGE_MESSAGE, *PCHALLENGE_MESSAGE;
114
115typedef struct _AUTHENTICATE_MESSAGE {
116 __u8 Signature[sizeof(NTLMSSP_SIGNATURE)];
117 __le32 MessageType; /* NtLmsAuthenticate = 3 */
118 SECURITY_BUFFER LmChallengeResponse;
119 SECURITY_BUFFER NtChallengeResponse;
120 SECURITY_BUFFER DomainName;
121 SECURITY_BUFFER UserName;
122 SECURITY_BUFFER WorkstationName;
123 SECURITY_BUFFER SessionKey;
124 __le32 NegotiateFlags;
125 /* SECURITY_BUFFER for version info not present since we
126 do not set the version is present flag */
127 char UserString[0];
128} __attribute__((packed)) AUTHENTICATE_MESSAGE, *PAUTHENTICATE_MESSAGE;