auth/ntlmssp/ntlmssp.h

   1 /*
   2    Unix SMB/CIFS implementation.
   3    SMB parameters and setup
   4    Copyright (C) Andrew Tridgell 1992-1997
   5    Copyright (C) Luke Kenneth Casson Leighton 1996-1997
   6    Copyright (C) Paul Ashton 1997
   7    Copyright (C) Andrew Bartlett 2010
   8
   9    This program is free software; you can redistribute it and/or modify
  10    it under the terms of the GNU General Public License as published by
  11    the Free Software Foundation; either version 3 of the License, or
  12    (at your option) any later version.
  13
  14    This program is distributed in the hope that it will be useful,
  15    but WITHOUT ANY WARRANTY; without even the implied warranty of
  16    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  17    GNU General Public License for more details.
  18
  19    You should have received a copy of the GNU General Public License
  20    along with this program.  If not, see <http://www.gnu.org/licenses/>.
  21 */
  22
  23 #include "../librpc/gen_ndr/ntlmssp.h"
  24
  25 struct auth_context;
  26 struct auth_serversupplied_info;
  27 struct tsocket_address;
  28 struct auth_user_info_dc;
  29 struct gensec_security;
  30 struct ntlmssp_state;
  31
  32 /* NTLMSSP mode */
  33 enum ntlmssp_role
  34 {
  35         NTLMSSP_SERVER,
  36         NTLMSSP_CLIENT
  37 };
  38
  39 /* NTLMSSP message types */
  40 enum ntlmssp_message_type
  41 {
  42         NTLMSSP_INITIAL = 0 /* samba internal state */,
  43         NTLMSSP_NEGOTIATE = 1,
  44         NTLMSSP_CHALLENGE = 2,
  45         NTLMSSP_AUTH      = 3,
  46         NTLMSSP_UNKNOWN   = 4,
  47         NTLMSSP_DONE      = 5 /* samba final state */
  48 };
  49
  50 #define NTLMSSP_FEATURE_SESSION_KEY        0x00000001
  51 #define NTLMSSP_FEATURE_SIGN               0x00000002
  52 #define NTLMSSP_FEATURE_SEAL               0x00000004
  53 #define NTLMSSP_FEATURE_CCACHE             0x00000008
  54
  55 union ntlmssp_crypt_state;
  56
  57 struct ntlmssp_state
  58 {
  59         enum ntlmssp_role role;
  60         uint32_t expected_state;
  61
  62         bool unicode;
  63         bool use_ntlmv2;
  64         bool use_ccache;
  65         bool resume_ccache;
  66         bool use_nt_response;  /* Set to 'False' to debug what happens when the NT response is omited */
  67         bool allow_lm_response;/* The LM_RESPONSE code is not very secure... */
  68         bool allow_lm_key;     /* The LM_KEY code is not very secure... */
  69
  70         const char *user;
  71         const char *domain;
  72         uint8_t *nt_hash;
  73         uint8_t *lm_hash;
  74
  75         DATA_BLOB negotiate_blob;
  76         DATA_BLOB challenge_blob;
  77         bool new_spnego;
  78         bool force_old_spnego;
  79
  80         struct {
  81                 const char *netbios_name;
  82                 const char *netbios_domain;
  83                 struct AV_PAIR_LIST av_pair_list;
  84         } client;
  85
  86         struct {
  87                 bool is_standalone;
  88                 const char *netbios_name;
  89                 const char *netbios_domain;
  90                 const char *dns_name;
  91                 const char *dns_domain;
  92                 NTTIME challenge_endtime;
  93                 struct AV_PAIR_LIST av_pair_list;
  94         } server;
  95
  96         DATA_BLOB internal_chal; /* Random challenge as supplied to the client for NTLM authentication */
  97
  98         DATA_BLOB chal; /* Random challenge as input into the actual NTLM (or NTLM2) authentication */
  99         DATA_BLOB lm_resp;
 100         DATA_BLOB nt_resp;
 101         DATA_BLOB session_key;
 102
 103         uint32_t conf_flags;
 104         uint32_t required_flags;
 105         uint32_t neg_flags; /* the current state of negotiation with the NTLMSSP partner */
 106
 107         bool force_wrap_seal;
 108
 109         union ntlmssp_crypt_state *crypt;
 110 };
 111
 112 /* The following definitions come from libcli/auth/ntlmssp_sign.c  */
 113
 114 NTSTATUS ntlmssp_sign_packet(struct ntlmssp_state *ntlmssp_state,
 115                              TALLOC_CTX *sig_mem_ctx,
 116                              const uint8_t *data, size_t length,
 117                              const uint8_t *whole_pdu, size_t pdu_length,
 118                              DATA_BLOB *sig);
 119 NTSTATUS ntlmssp_check_packet(struct ntlmssp_state *ntlmssp_state,
 120                               const uint8_t *data, size_t length,
 121                               const uint8_t *whole_pdu, size_t pdu_length,
 122                               const DATA_BLOB *sig) ;
 123 NTSTATUS ntlmssp_seal_packet(struct ntlmssp_state *ntlmssp_state,
 124                              TALLOC_CTX *sig_mem_ctx,
 125                              uint8_t *data, size_t length,
 126                              const uint8_t *whole_pdu, size_t pdu_length,
 127                              DATA_BLOB *sig);
 128 NTSTATUS ntlmssp_unseal_packet(struct ntlmssp_state *ntlmssp_state,
 129                                uint8_t *data, size_t length,
 130                                const uint8_t *whole_pdu, size_t pdu_length,
 131                                const DATA_BLOB *sig);
 132 NTSTATUS ntlmssp_wrap(struct ntlmssp_state *ntlmssp_state,
 133                       TALLOC_CTX *out_mem_ctx,
 134                       const DATA_BLOB *in,
 135                       DATA_BLOB *out);
 136 NTSTATUS ntlmssp_unwrap(struct ntlmssp_state *ntlmssp_stae,
 137                         TALLOC_CTX *out_mem_ctx,
 138                         const DATA_BLOB *in,
 139                         DATA_BLOB *out);
 140 NTSTATUS ntlmssp_sign_reset(struct ntlmssp_state *ntlmssp_state,
 141                             bool reset_seqnums);
 142 NTSTATUS ntlmssp_sign_init(struct ntlmssp_state *ntlmssp_state);
 143
 144 bool ntlmssp_blob_matches_magic(const DATA_BLOB *blob);
 145
 146 /* The following definitions come from auth/ntlmssp/gensec_ntlmssp.c  */
 147
 148 NTSTATUS gensec_ntlmssp_init(TALLOC_CTX *ctx);
 149
 150 uint32_t gensec_ntlmssp_neg_flags(struct gensec_security *gensec_security);
 151 const char *gensec_ntlmssp_server_domain(struct gensec_security *gensec_security);