r6458: Split up NTLMSSP into a new directory, and into seperate files for the

client and server logic code.  In future, this may allow us to build
only the NTLMSSP client, and not the server, but in the short-term, it
allows me greater sainity in moving around these files.

Andrew Bartlett
(This used to be commit 2f22841c6753e3d5816c12bd463b71f74e1d8796)

1 files changed, 198 insertions, 0 deletions

diff --git a/source4/auth/ntlmssp/ntlmssp.h b/source4/auth/ntlmssp/ntlmssp.h
new file mode 100644
index 0000000000..0fe04a7c0f
--- /dev/null
+++ b/source4/auth/ntlmssp/ntlmssp.h
@@ -0,0 +1,198 @@
+/* 
+   Unix SMB/CIFS implementation.
+   SMB parameters and setup
+   Copyright (C) Andrew Tridgell 1992-1997
+   Copyright (C) Luke Kenneth Casson Leighton 1996-1997
+   Copyright (C) Paul Ashton 1997
+   
+   This program is free software; you can redistribute it and/or modify
+   it under the terms of the GNU General Public License as published by
+   the Free Software Foundation; either version 2 of the License, or
+   (at your option) any later version.
+   
+   This program is distributed in the hope that it will be useful,
+   but WITHOUT ANY WARRANTY; without even the implied warranty of
+   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+   GNU General Public License for more details.
+   
+   You should have received a copy of the GNU General Public License
+   along with this program; if not, write to the Free Software
+   Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
+*/
+
+#include "librpc/gen_ndr/ndr_samr.h"
+
+/* NTLMSSP mode */
+enum ntlmssp_role
+{
+	NTLMSSP_SERVER,
+	NTLMSSP_CLIENT
+};
+
+/* NTLMSSP message types */
+enum ntlmssp_message_type
+{
+	NTLMSSP_INITIAL = 0 /* samba internal state */,
+	NTLMSSP_NEGOTIATE = 1,
+	NTLMSSP_CHALLENGE = 2,
+	NTLMSSP_AUTH      = 3,
+	NTLMSSP_UNKNOWN   = 4,
+	NTLMSSP_DONE   = 5 /* samba final state */
+};
+
+/* NTLMSSP negotiation flags */
+#define NTLMSSP_NEGOTIATE_UNICODE          0x00000001
+#define NTLMSSP_NEGOTIATE_OEM              0x00000002
+#define NTLMSSP_REQUEST_TARGET             0x00000004
+#define NTLMSSP_NEGOTIATE_SIGN             0x00000010 /* Message integrity */
+#define NTLMSSP_NEGOTIATE_SEAL             0x00000020 /* Message confidentiality */
+#define NTLMSSP_NEGOTIATE_DATAGRAM_STYLE   0x00000040
+#define NTLMSSP_NEGOTIATE_LM_KEY           0x00000080
+#define NTLMSSP_NEGOTIATE_NETWARE          0x00000100
+#define NTLMSSP_NEGOTIATE_NTLM             0x00000200
+#define NTLMSSP_NEGOTIATE_DOMAIN_SUPPLIED  0x00001000
+#define NTLMSSP_NEGOTIATE_WORKSTATION_SUPPLIED 0x00002000
+#define NTLMSSP_NEGOTIATE_THIS_IS_LOCAL_CALL  0x00004000
+#define NTLMSSP_NEGOTIATE_ALWAYS_SIGN      0x00008000
+#define NTLMSSP_TARGET_TYPE_DOMAIN            0x10000
+#define NTLMSSP_TARGET_TYPE_SERVER            0x20000
+#define NTLMSSP_CHAL_INIT_RESPONSE         0x00010000
+
+#define NTLMSSP_CHAL_ACCEPT_RESPONSE       0x00020000
+#define NTLMSSP_CHAL_NON_NT_SESSION_KEY    0x00040000
+#define NTLMSSP_NEGOTIATE_NTLM2            0x00080000
+#define NTLMSSP_CHAL_TARGET_INFO           0x00800000
+#define NTLMSSP_NEGOTIATE_128              0x20000000 /* 128-bit encryption */
+#define NTLMSSP_NEGOTIATE_KEY_EXCH         0x40000000
+#define NTLMSSP_NEGOTIATE_56               0x80000000
+
+#define NTLMSSP_NAME_TYPE_SERVER      0x01
+#define NTLMSSP_NAME_TYPE_DOMAIN      0x02
+#define NTLMSSP_NAME_TYPE_SERVER_DNS  0x03
+#define NTLMSSP_NAME_TYPE_DOMAIN_DNS  0x04
+
+#define NTLMSSP_SIGN_VERSION 1
+
+#define NTLMSSP_SIG_SIZE 16
+
+struct ntlmssp_state 
+{
+	uint_t ref_count;
+	enum ntlmssp_role role;
+	enum samr_Role server_role;
+	uint32_t expected_state;
+
+	BOOL unicode;
+	BOOL use_ntlmv2;
+	BOOL use_nt_response;  /* Set to 'False' to debug what happens when the NT response is omited */
+	BOOL allow_lm_key;     /* The LM_KEY code is not functional at this point, and it's not 
+				  very secure anyway */
+
+	BOOL server_use_session_keys; /* Set to 'False' for authentication only, 
+					 that will never return a session key */
+	BOOL server_multiple_authentications;  /* Set to 'True' to allow squid 2.5 
+						  style 'challenge caching' */
+
+	char *user;
+	char *domain;
+	const char *workstation;
+	char *password;
+	char *server_domain;
+
+	DATA_BLOB internal_chal; /* Random challenge as supplied to the client for NTLM authentication */
+
+	DATA_BLOB chal; /* Random challenge as input into the actual NTLM (or NTLM2) authentication */
+ 	DATA_BLOB lm_resp;
+	DATA_BLOB nt_resp;
+	DATA_BLOB session_key;
+	
+	uint32_t neg_flags; /* the current state of negotiation with the NTLMSSP partner */
+
+	/* internal variables used by NTLM2 */
+	BOOL doing_ntlm2; 
+	uint8_t session_nonce[16];
+
+	/* internal variables used by KEY_EXCH (client-supplied user session key */
+	DATA_BLOB encrypted_session_key;
+	
+	void *auth_context;
+
+	/**
+	 * Callback to get the 'challenge' used for NTLM authentication.  
+	 *
+	 * @param ntlmssp_state This structure
+	 * @return 8 bytes of challenge data, determined by the server to be the challenge for NTLM authentication
+	 *
+	 */
+	const uint8_t *(*get_challenge)(const struct ntlmssp_state *ntlmssp_state);
+
+	/**
+	 * Callback to find if the challenge used by NTLM authentication may be modified 
+	 *
+	 * The NTLM2 authentication scheme modifies the effective challenge, but this is not compatiable with the
+	 * current 'security=server' implementation..  
+	 *
+	 * @param ntlmssp_state This structure
+	 * @return Can the challenge be set to arbitary values?
+	 *
+	 */
+	BOOL (*may_set_challenge)(const struct ntlmssp_state *ntlmssp_state);
+
+	/**
+	 * Callback to set the 'challenge' used for NTLM authentication.  
+	 *
+	 * The callback may use the void *auth_context to store state information, but the same value is always available
+	 * from the DATA_BLOB chal on this structure.
+	 *
+	 * @param ntlmssp_state This structure
+	 * @param challange 8 bytes of data, agreed by the client and server to be the effective challenge for NTLM2 authentication
+	 *
+	 */
+	NTSTATUS (*set_challenge)(struct ntlmssp_state *ntlmssp_state, DATA_BLOB *challenge);
+
+	/**
+	 * Callback to check the user's password.  
+	 *
+	 * The callback must reads the feilds of this structure for the information it needs on the user 
+	 * @param ntlmssp_state This structure
+	 * @param nt_session_key If an NT session key is returned by the authentication process, return it here
+	 * @param lm_session_key If an LM session key is returned by the authentication process, return it here
+	 *
+	 */
+	NTSTATUS (*check_password)(struct ntlmssp_state *ntlmssp_state, DATA_BLOB *nt_session_key, DATA_BLOB *lm_session_key);
+
+	const char *server_name;
+	const char *(*get_domain)(void);
+
+	/* SMB Signing */
+	uint32_t ntlm_seq_num;
+	uint32_t ntlm2_send_seq_num;
+	uint32_t ntlm2_recv_seq_num;
+
+	/* ntlmv2 */
+	DATA_BLOB send_sign_key;
+	DATA_BLOB send_seal_key;
+	DATA_BLOB recv_sign_key;
+	DATA_BLOB recv_seal_key;
+
+	uint8_t send_seal_hash[258];
+	uint8_t recv_seal_hash[258];
+
+	/* ntlmv1 */
+	uint8_t ntlmssp_hash[258];
+
+	/* it turns out that we don't always get the
+	   response in at the time we want to process it.
+	   Store it here, until we need it */
+	DATA_BLOB stored_response; 
+	
+};
+
+struct gensec_ntlmssp_state {
+	struct auth_context *auth_context;
+	struct auth_serversupplied_info *server_info;
+	struct ntlmssp_state *ntlmssp_state;
+	uint32_t have_features;
+};
+
+