170 lines
5.6 KiB
C
170 lines
5.6 KiB
C
/* SPDX-License-Identifier: LGPL-2.1+ */
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/*
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* Copyright (c) International Business Machines Corp., 2002,2007
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* Author(s): Steve French (sfrench@us.ibm.com)
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*/
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#ifndef __KSMBD_NTLMSSP_H
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#define __KSMBD_NTLMSSP_H
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#define NTLMSSP_SIGNATURE "NTLMSSP"
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/* Security blob target info data */
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#define TGT_Name "KSMBD"
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/*
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* Size of the crypto key returned on the negotiate SMB in bytes
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*/
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#define CIFS_CRYPTO_KEY_SIZE (8)
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#define CIFS_KEY_SIZE (40)
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/*
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* Size of encrypted user password in bytes
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*/
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#define CIFS_ENCPWD_SIZE (16)
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#define CIFS_CPHTXT_SIZE (16)
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/* Message Types */
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#define NtLmNegotiate cpu_to_le32(1)
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#define NtLmChallenge cpu_to_le32(2)
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#define NtLmAuthenticate cpu_to_le32(3)
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#define UnknownMessage cpu_to_le32(8)
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/* Negotiate Flags */
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#define NTLMSSP_NEGOTIATE_UNICODE 0x01 /* Text strings are unicode */
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#define NTLMSSP_NEGOTIATE_OEM 0x02 /* Text strings are in OEM */
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#define NTLMSSP_REQUEST_TARGET 0x04 /* Srv returns its auth realm */
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/* define reserved9 0x08 */
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#define NTLMSSP_NEGOTIATE_SIGN 0x0010 /* Request signing capability */
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#define NTLMSSP_NEGOTIATE_SEAL 0x0020 /* Request confidentiality */
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#define NTLMSSP_NEGOTIATE_DGRAM 0x0040
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#define NTLMSSP_NEGOTIATE_LM_KEY 0x0080 /* Use LM session key */
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/* defined reserved 8 0x0100 */
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#define NTLMSSP_NEGOTIATE_NTLM 0x0200 /* NTLM authentication */
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#define NTLMSSP_NEGOTIATE_NT_ONLY 0x0400 /* Lanman not allowed */
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#define NTLMSSP_ANONYMOUS 0x0800
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#define NTLMSSP_NEGOTIATE_DOMAIN_SUPPLIED 0x1000 /* reserved6 */
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#define NTLMSSP_NEGOTIATE_WORKSTATION_SUPPLIED 0x2000
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#define NTLMSSP_NEGOTIATE_LOCAL_CALL 0x4000 /* client/server same machine */
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#define NTLMSSP_NEGOTIATE_ALWAYS_SIGN 0x8000 /* Sign. All security levels */
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#define NTLMSSP_TARGET_TYPE_DOMAIN 0x10000
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#define NTLMSSP_TARGET_TYPE_SERVER 0x20000
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#define NTLMSSP_TARGET_TYPE_SHARE 0x40000
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#define NTLMSSP_NEGOTIATE_EXTENDED_SEC 0x80000 /* NB:not related to NTLMv2 pwd*/
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/* #define NTLMSSP_REQUEST_INIT_RESP 0x100000 */
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#define NTLMSSP_NEGOTIATE_IDENTIFY 0x100000
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#define NTLMSSP_REQUEST_ACCEPT_RESP 0x200000 /* reserved5 */
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#define NTLMSSP_REQUEST_NON_NT_KEY 0x400000
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#define NTLMSSP_NEGOTIATE_TARGET_INFO 0x800000
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/* #define reserved4 0x1000000 */
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#define NTLMSSP_NEGOTIATE_VERSION 0x2000000 /* we do not set */
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/* #define reserved3 0x4000000 */
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/* #define reserved2 0x8000000 */
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/* #define reserved1 0x10000000 */
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#define NTLMSSP_NEGOTIATE_128 0x20000000
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#define NTLMSSP_NEGOTIATE_KEY_XCH 0x40000000
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#define NTLMSSP_NEGOTIATE_56 0x80000000
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/* Define AV Pair Field IDs */
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enum av_field_type {
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NTLMSSP_AV_EOL = 0,
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NTLMSSP_AV_NB_COMPUTER_NAME,
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NTLMSSP_AV_NB_DOMAIN_NAME,
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NTLMSSP_AV_DNS_COMPUTER_NAME,
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NTLMSSP_AV_DNS_DOMAIN_NAME,
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NTLMSSP_AV_DNS_TREE_NAME,
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NTLMSSP_AV_FLAGS,
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NTLMSSP_AV_TIMESTAMP,
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NTLMSSP_AV_RESTRICTION,
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NTLMSSP_AV_TARGET_NAME,
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NTLMSSP_AV_CHANNEL_BINDINGS
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};
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/* Although typedefs are not commonly used for structure definitions */
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/* in the Linux kernel, in this particular case they are useful */
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/* to more closely match the standards document for NTLMSSP from */
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/* OpenGroup and to make the code more closely match the standard in */
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/* appearance */
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struct security_buffer {
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__le16 Length;
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__le16 MaximumLength;
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__le32 BufferOffset; /* offset to buffer */
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} __packed;
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struct target_info {
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__le16 Type;
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__le16 Length;
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__u8 Content[0];
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} __packed;
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struct negotiate_message {
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__u8 Signature[sizeof(NTLMSSP_SIGNATURE)];
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__le32 MessageType; /* NtLmNegotiate = 1 */
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__le32 NegotiateFlags;
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struct security_buffer DomainName; /* RFC 1001 style and ASCII */
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struct security_buffer WorkstationName; /* RFC 1001 and ASCII */
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/*
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* struct security_buffer for version info not present since we
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* do not set the version is present flag
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*/
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char DomainString[0];
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/* followed by WorkstationString */
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} __packed;
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struct challenge_message {
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__u8 Signature[sizeof(NTLMSSP_SIGNATURE)];
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__le32 MessageType; /* NtLmChallenge = 2 */
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struct security_buffer TargetName;
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__le32 NegotiateFlags;
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__u8 Challenge[CIFS_CRYPTO_KEY_SIZE];
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__u8 Reserved[8];
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struct security_buffer TargetInfoArray;
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/*
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* struct security_buffer for version info not present since we
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* do not set the version is present flag
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*/
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} __packed;
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struct authenticate_message {
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__u8 Signature[sizeof(NTLMSSP_SIGNATURE)];
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__le32 MessageType; /* NtLmsAuthenticate = 3 */
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struct security_buffer LmChallengeResponse;
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struct security_buffer NtChallengeResponse;
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struct security_buffer DomainName;
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struct security_buffer UserName;
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struct security_buffer WorkstationName;
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struct security_buffer SessionKey;
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__le32 NegotiateFlags;
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/*
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* struct security_buffer for version info not present since we
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* do not set the version is present flag
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*/
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char UserString[0];
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} __packed;
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struct ntlmv2_resp {
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char ntlmv2_hash[CIFS_ENCPWD_SIZE];
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__le32 blob_signature;
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__u32 reserved;
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__le64 time;
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__u64 client_chal; /* random */
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__u32 reserved2;
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/* array of name entries could follow ending in minimum 4 byte struct */
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} __packed;
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/* per smb session structure/fields */
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struct ntlmssp_auth {
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/* whether session key is per smb session */
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bool sesskey_per_smbsess;
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/* sent by client in type 1 ntlmsssp exchange */
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__u32 client_flags;
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/* sent by server in type 2 ntlmssp exchange */
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__u32 conn_flags;
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/* sent to server */
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unsigned char ciphertext[CIFS_CPHTXT_SIZE];
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/* used by ntlmssp */
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char cryptkey[CIFS_CRYPTO_KEY_SIZE];
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};
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#endif /* __KSMBD_NTLMSSP_H */
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