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-rw-r--r--libcli/auth/ntlmssp.h139
1 files changed, 139 insertions, 0 deletions
diff --git a/libcli/auth/ntlmssp.h b/libcli/auth/ntlmssp.h
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+++ b/libcli/auth/ntlmssp.h
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+/*
+ 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
+ Copyright (C) Andrew Bartlett 2010
+
+ 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 3 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, see <http://www.gnu.org/licenses/>.
+*/
+
+#include "../librpc/gen_ndr/ntlmssp.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 */
+};
+
+#define NTLMSSP_FEATURE_SESSION_KEY 0x00000001
+#define NTLMSSP_FEATURE_SIGN 0x00000002
+#define NTLMSSP_FEATURE_SEAL 0x00000004
+#define NTLMSSP_FEATURE_CCACHE 0x00000008
+
+union ntlmssp_crypt_state;
+
+struct ntlmssp_state
+{
+ enum ntlmssp_role role;
+ uint32_t expected_state;
+
+ bool unicode;
+ bool use_ntlmv2;
+ bool use_ccache;
+ 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 very secure... */
+
+ const char *user;
+ const char *domain;
+ uint8_t *nt_hash;
+ uint8_t *lm_hash;
+
+ struct {
+ const char *netbios_name;
+ const char *netbios_domain;
+ } client;
+
+ struct {
+ bool is_standalone;
+ const char *netbios_name;
+ const char *netbios_domain;
+ const char *dns_name;
+ const char *dns_domain;
+ } server;
+
+ 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 */
+
+ /**
+ * Private data for the callback functions
+ */
+ void *callback_private;
+
+ /**
+ * 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
+ *
+ */
+ NTSTATUS (*get_challenge)(const struct ntlmssp_state *ntlmssp_state,
+ uint8_t challenge[8]);
+
+ /**
+ * 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 challenge 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);
+
+ union ntlmssp_crypt_state *crypt;
+};