summaryrefslogtreecommitdiffstats
path: root/fs/smb/server/ntlmssp.h
diff options
context:
space:
mode:
Diffstat (limited to '')
-rw-r--r--fs/smb/server/ntlmssp.h169
1 files changed, 169 insertions, 0 deletions
diff --git a/fs/smb/server/ntlmssp.h b/fs/smb/server/ntlmssp.h
new file mode 100644
index 000000000..f13153c18
--- /dev/null
+++ b/fs/smb/server/ntlmssp.h
@@ -0,0 +1,169 @@
+/* SPDX-License-Identifier: LGPL-2.1+ */
+/*
+ * Copyright (c) International Business Machines Corp., 2002,2007
+ * Author(s): Steve French (sfrench@us.ibm.com)
+ */
+
+#ifndef __KSMBD_NTLMSSP_H
+#define __KSMBD_NTLMSSP_H
+
+#define NTLMSSP_SIGNATURE "NTLMSSP"
+
+/* Security blob target info data */
+#define TGT_Name "KSMBD"
+
+/*
+ * Size of the crypto key returned on the negotiate SMB in bytes
+ */
+#define CIFS_CRYPTO_KEY_SIZE (8)
+#define CIFS_KEY_SIZE (40)
+
+/*
+ * Size of encrypted user password in bytes
+ */
+#define CIFS_ENCPWD_SIZE (16)
+#define CIFS_CPHTXT_SIZE (16)
+
+/* 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 */
+
+struct security_buffer {
+ __le16 Length;
+ __le16 MaximumLength;
+ __le32 BufferOffset; /* offset to buffer */
+} __packed;
+
+struct target_info {
+ __le16 Type;
+ __le16 Length;
+ __u8 Content[];
+} __packed;
+
+struct negotiate_message {
+ __u8 Signature[sizeof(NTLMSSP_SIGNATURE)];
+ __le32 MessageType; /* NtLmNegotiate = 1 */
+ __le32 NegotiateFlags;
+ struct security_buffer DomainName; /* RFC 1001 style and ASCII */
+ struct security_buffer WorkstationName; /* RFC 1001 and ASCII */
+ /*
+ * struct security_buffer for version info not present since we
+ * do not set the version is present flag
+ */
+ char DomainString[];
+ /* followed by WorkstationString */
+} __packed;
+
+struct challenge_message {
+ __u8 Signature[sizeof(NTLMSSP_SIGNATURE)];
+ __le32 MessageType; /* NtLmChallenge = 2 */
+ struct security_buffer TargetName;
+ __le32 NegotiateFlags;
+ __u8 Challenge[CIFS_CRYPTO_KEY_SIZE];
+ __u8 Reserved[8];
+ struct security_buffer TargetInfoArray;
+ /*
+ * struct security_buffer for version info not present since we
+ * do not set the version is present flag
+ */
+} __packed;
+
+struct authenticate_message {
+ __u8 Signature[sizeof(NTLMSSP_SIGNATURE)];
+ __le32 MessageType; /* NtLmsAuthenticate = 3 */
+ struct security_buffer LmChallengeResponse;
+ struct security_buffer NtChallengeResponse;
+ struct security_buffer DomainName;
+ struct security_buffer UserName;
+ struct security_buffer WorkstationName;
+ struct security_buffer SessionKey;
+ __le32 NegotiateFlags;
+ /*
+ * struct security_buffer for version info not present since we
+ * do not set the version is present flag
+ */
+ char UserString[];
+} __packed;
+
+struct ntlmv2_resp {
+ char ntlmv2_hash[CIFS_ENCPWD_SIZE];
+ __le32 blob_signature;
+ __u32 reserved;
+ __le64 time;
+ __u64 client_chal; /* random */
+ __u32 reserved2;
+ /* array of name entries could follow ending in minimum 4 byte struct */
+} __packed;
+
+/* per smb session structure/fields */
+struct ntlmssp_auth {
+ /* whether session key is per smb session */
+ bool sesskey_per_smbsess;
+ /* sent by client in type 1 ntlmsssp exchange */
+ __u32 client_flags;
+ /* sent by server in type 2 ntlmssp exchange */
+ __u32 conn_flags;
+ /* sent to server */
+ unsigned char ciphertext[CIFS_CPHTXT_SIZE];
+ /* used by ntlmssp */
+ char cryptkey[CIFS_CRYPTO_KEY_SIZE];
+};
+#endif /* __KSMBD_NTLMSSP_H */