128 lines
5.0 KiB
C
128 lines
5.0 KiB
C
/* SPDX-License-Identifier: LGPL-2.1 */
|
|
/*
|
|
*
|
|
* Copyright (c) International Business Machines Corp., 2002,2007
|
|
* Author(s): Steve French (sfrench@us.ibm.com)
|
|
*
|
|
*/
|
|
|
|
#define NTLMSSP_SIGNATURE "NTLMSSP"
|
|
/* Message Types */
|
|
#define NtLmNegotiate cpu_to_le32(1)
|
|
#define NtLmChallenge cpu_to_le32(2)
|
|
#define NtLmAuthenticate cpu_to_le32(3)
|
|
#define UnknownMessage cpu_to_le32(8)
|
|
|
|
/* Negotiate Flags */
|
|
#define NTLMSSP_NEGOTIATE_UNICODE 0x01 /* Text strings are unicode */
|
|
#define NTLMSSP_NEGOTIATE_OEM 0x02 /* Text strings are in OEM */
|
|
#define NTLMSSP_REQUEST_TARGET 0x04 /* Srv returns its auth realm */
|
|
/* define reserved9 0x08 */
|
|
#define NTLMSSP_NEGOTIATE_SIGN 0x0010 /* Request signing capability */
|
|
#define NTLMSSP_NEGOTIATE_SEAL 0x0020 /* Request confidentiality */
|
|
#define NTLMSSP_NEGOTIATE_DGRAM 0x0040
|
|
#define NTLMSSP_NEGOTIATE_LM_KEY 0x0080 /* Use LM session key */
|
|
/* defined reserved 8 0x0100 */
|
|
#define NTLMSSP_NEGOTIATE_NTLM 0x0200 /* NTLM authentication */
|
|
#define NTLMSSP_NEGOTIATE_NT_ONLY 0x0400 /* Lanman not allowed */
|
|
#define NTLMSSP_ANONYMOUS 0x0800
|
|
#define NTLMSSP_NEGOTIATE_DOMAIN_SUPPLIED 0x1000 /* reserved6 */
|
|
#define NTLMSSP_NEGOTIATE_WORKSTATION_SUPPLIED 0x2000
|
|
#define NTLMSSP_NEGOTIATE_LOCAL_CALL 0x4000 /* client/server same machine */
|
|
#define NTLMSSP_NEGOTIATE_ALWAYS_SIGN 0x8000 /* Sign. All security levels */
|
|
#define NTLMSSP_TARGET_TYPE_DOMAIN 0x10000
|
|
#define NTLMSSP_TARGET_TYPE_SERVER 0x20000
|
|
#define NTLMSSP_TARGET_TYPE_SHARE 0x40000
|
|
#define NTLMSSP_NEGOTIATE_EXTENDED_SEC 0x80000 /* NB:not related to NTLMv2 pwd*/
|
|
/* #define NTLMSSP_REQUEST_INIT_RESP 0x100000 */
|
|
#define NTLMSSP_NEGOTIATE_IDENTIFY 0x100000
|
|
#define NTLMSSP_REQUEST_ACCEPT_RESP 0x200000 /* reserved5 */
|
|
#define NTLMSSP_REQUEST_NON_NT_KEY 0x400000
|
|
#define NTLMSSP_NEGOTIATE_TARGET_INFO 0x800000
|
|
/* #define reserved4 0x1000000 */
|
|
#define NTLMSSP_NEGOTIATE_VERSION 0x2000000 /* we do not set */
|
|
/* #define reserved3 0x4000000 */
|
|
/* #define reserved2 0x8000000 */
|
|
/* #define reserved1 0x10000000 */
|
|
#define NTLMSSP_NEGOTIATE_128 0x20000000
|
|
#define NTLMSSP_NEGOTIATE_KEY_XCH 0x40000000
|
|
#define NTLMSSP_NEGOTIATE_56 0x80000000
|
|
|
|
/* Define AV Pair Field IDs */
|
|
enum av_field_type {
|
|
NTLMSSP_AV_EOL = 0,
|
|
NTLMSSP_AV_NB_COMPUTER_NAME,
|
|
NTLMSSP_AV_NB_DOMAIN_NAME,
|
|
NTLMSSP_AV_DNS_COMPUTER_NAME,
|
|
NTLMSSP_AV_DNS_DOMAIN_NAME,
|
|
NTLMSSP_AV_DNS_TREE_NAME,
|
|
NTLMSSP_AV_FLAGS,
|
|
NTLMSSP_AV_TIMESTAMP,
|
|
NTLMSSP_AV_RESTRICTION,
|
|
NTLMSSP_AV_TARGET_NAME,
|
|
NTLMSSP_AV_CHANNEL_BINDINGS
|
|
};
|
|
|
|
/* Although typedefs are not commonly used for structure definitions */
|
|
/* in the Linux kernel, in this particular case they are useful */
|
|
/* to more closely match the standards document for NTLMSSP from */
|
|
/* OpenGroup and to make the code more closely match the standard in */
|
|
/* appearance */
|
|
|
|
typedef struct _SECURITY_BUFFER {
|
|
__le16 Length;
|
|
__le16 MaximumLength;
|
|
__le32 BufferOffset; /* offset to buffer */
|
|
} __attribute__((packed)) SECURITY_BUFFER;
|
|
|
|
typedef struct _NEGOTIATE_MESSAGE {
|
|
__u8 Signature[sizeof(NTLMSSP_SIGNATURE)];
|
|
__le32 MessageType; /* NtLmNegotiate = 1 */
|
|
__le32 NegotiateFlags;
|
|
SECURITY_BUFFER DomainName; /* RFC 1001 style and ASCII */
|
|
SECURITY_BUFFER WorkstationName; /* RFC 1001 and ASCII */
|
|
/* SECURITY_BUFFER for version info not present since we
|
|
do not set the version is present flag */
|
|
char DomainString[0];
|
|
/* followed by WorkstationString */
|
|
} __attribute__((packed)) NEGOTIATE_MESSAGE, *PNEGOTIATE_MESSAGE;
|
|
|
|
typedef struct _CHALLENGE_MESSAGE {
|
|
__u8 Signature[sizeof(NTLMSSP_SIGNATURE)];
|
|
__le32 MessageType; /* NtLmChallenge = 2 */
|
|
SECURITY_BUFFER TargetName;
|
|
__le32 NegotiateFlags;
|
|
__u8 Challenge[CIFS_CRYPTO_KEY_SIZE];
|
|
__u8 Reserved[8];
|
|
SECURITY_BUFFER TargetInfoArray;
|
|
/* SECURITY_BUFFER for version info not present since we
|
|
do not set the version is present flag */
|
|
} __attribute__((packed)) CHALLENGE_MESSAGE, *PCHALLENGE_MESSAGE;
|
|
|
|
typedef struct _AUTHENTICATE_MESSAGE {
|
|
__u8 Signature[sizeof(NTLMSSP_SIGNATURE)];
|
|
__le32 MessageType; /* NtLmsAuthenticate = 3 */
|
|
SECURITY_BUFFER LmChallengeResponse;
|
|
SECURITY_BUFFER NtChallengeResponse;
|
|
SECURITY_BUFFER DomainName;
|
|
SECURITY_BUFFER UserName;
|
|
SECURITY_BUFFER WorkstationName;
|
|
SECURITY_BUFFER SessionKey;
|
|
__le32 NegotiateFlags;
|
|
/* SECURITY_BUFFER for version info not present since we
|
|
do not set the version is present flag */
|
|
char UserString[0];
|
|
} __attribute__((packed)) AUTHENTICATE_MESSAGE, *PAUTHENTICATE_MESSAGE;
|
|
|
|
/*
|
|
* Size of the session key (crypto key encrypted with the password
|
|
*/
|
|
|
|
int decode_ntlmssp_challenge(char *bcc_ptr, int blob_len, struct cifs_ses *ses);
|
|
int build_ntlmssp_negotiate_blob(unsigned char **pbuffer, u16 *buflen,
|
|
struct cifs_ses *ses,
|
|
const struct nls_table *nls_cp);
|
|
int build_ntlmssp_auth_blob(unsigned char **pbuffer, u16 *buflen,
|
|
struct cifs_ses *ses,
|
|
const struct nls_table *nls_cp);
|