auth/ntlmssp/ntlmssp_private.h

   1 /*
   2  *  Unix SMB/CIFS implementation.
   3  *  Version 3.0
   4  *  NTLMSSP Signing routines
   5  *  Copyright (C) Andrew Bartlett 2003-2005
   6  *
   7  *  This program is free software; you can redistribute it and/or modify
   8  *  it under the terms of the GNU General Public License as published by
   9  *  the Free Software Foundation; either version 3 of the License, or
  10  *  (at your option) any later version.
  11  *
  12  *  This program is distributed in the hope that it will be useful,
  13  *  but WITHOUT ANY WARRANTY; without even the implied warranty of
  14  *  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  15  *  GNU General Public License for more details.
  16  *
  17  *  You should have received a copy of the GNU General Public License
  18  *  along with this program; if not, see <http://www.gnu.org/licenses/>.
  19  */
  20
  21 /* For structures internal to the NTLMSSP implementation that should not be exposed */
  22
  23 #include "../lib/crypto/arcfour.h"
  24
  25 struct auth_session_info;
  26
  27 struct ntlmssp_crypt_direction {
  28         uint32_t seq_num;
  29         uint8_t sign_key[16];
  30         struct arcfour_state seal_state;
  31 };
  32
  33 union ntlmssp_crypt_state {
  34         /* NTLM */
  35         struct ntlmssp_crypt_direction ntlm;
  36
  37         /* NTLM2 */
  38         struct {
  39                 struct ntlmssp_crypt_direction sending;
  40                 struct ntlmssp_crypt_direction receiving;
  41         } ntlm2;
  42 };
  43
  44 struct gensec_ntlmssp_context {
  45         /* For GENSEC users */
  46         void *server_returned_info;
  47
  48         /* used by both client and server implementation */
  49         struct ntlmssp_state *ntlmssp_state;
  50 };
  51
  52 /* The following definitions come from auth/ntlmssp.c  */
  53
  54 NTSTATUS gensec_ntlmssp_update(struct gensec_security *gensec_security,
  55                                TALLOC_CTX *out_mem_ctx,
  56                                struct tevent_context *ev,
  57                                const DATA_BLOB input, DATA_BLOB *out);
  58
  59 /* The following definitions come from auth/ntlmssp_util.c  */
  60
  61 void debug_ntlmssp_flags(uint32_t neg_flags);
  62 void ntlmssp_handle_neg_flags(struct ntlmssp_state *ntlmssp_state,
  63                               uint32_t neg_flags, bool allow_lm);
  64
  65 /* The following definitions come from auth/ntlmssp_server.c  */
  66
  67 const char *ntlmssp_target_name(struct ntlmssp_state *ntlmssp_state,
  68                                 uint32_t neg_flags, uint32_t *chal_flags);
  69 NTSTATUS ntlmssp_server_negotiate(struct ntlmssp_state *ntlmssp_state,
  70                                   TALLOC_CTX *out_mem_ctx,
  71                                   const DATA_BLOB in, DATA_BLOB *out);
  72 NTSTATUS ntlmssp_server_auth(struct ntlmssp_state *ntlmssp_state,
  73                              TALLOC_CTX *out_mem_ctx,
  74                              const DATA_BLOB request, DATA_BLOB *reply);
  75 /* The following definitions come from auth/ntlmssp/ntlmssp_client.c  */
  76
  77
  78 /**
  79  * Next state function for the Initial packet
  80  *
  81  * @param ntlmssp_state NTLMSSP State
  82  * @param out_mem_ctx The DATA_BLOB *out will be allocated on this context
  83  * @param in A NULL data blob (input ignored)
  84  * @param out The initial negotiate request to the server, as an talloc()ed DATA_BLOB, on out_mem_ctx
  85  * @return Errors or NT_STATUS_OK.
  86  */
  87 NTSTATUS ntlmssp_client_initial(struct gensec_security *gensec_security,
  88                                 TALLOC_CTX *out_mem_ctx,
  89                                 DATA_BLOB in, DATA_BLOB *out) ;
  90
  91 /**
  92  * Next state function for the Challenge Packet.  Generate an auth packet.
  93  *
  94  * @param gensec_security GENSEC state
  95  * @param out_mem_ctx Memory context for *out
  96  * @param in The server challnege, as a DATA_BLOB.  reply.data must be NULL
  97  * @param out The next request (auth packet) to the server, as an allocated DATA_BLOB, on the out_mem_ctx context
  98  * @return Errors or NT_STATUS_OK.
  99  */
 100 NTSTATUS ntlmssp_client_challenge(struct gensec_security *gensec_security,
 101                                   TALLOC_CTX *out_mem_ctx,
 102                                   const DATA_BLOB in, DATA_BLOB *out) ;
 103 NTSTATUS gensec_ntlmssp_client_start(struct gensec_security *gensec_security);
 104
 105 /* The following definitions come from auth/ntlmssp/gensec_ntlmssp_server.c  */
 106
 107
 108 /**
 109  * Next state function for the Negotiate packet (GENSEC wrapper)
 110  *
 111  * @param gensec_security GENSEC state
 112  * @param out_mem_ctx Memory context for *out
 113  * @param in The request, as a DATA_BLOB.  reply.data must be NULL
 114  * @param out The reply, as an allocated DATA_BLOB, caller to free.
 115  * @return Errors or MORE_PROCESSING_REQUIRED if (normal) a reply is required.
 116  */
 117 NTSTATUS gensec_ntlmssp_server_negotiate(struct gensec_security *gensec_security,
 118                                          TALLOC_CTX *out_mem_ctx,
 119                                          const DATA_BLOB request, DATA_BLOB *reply);
 120
 121 /**
 122  * Next state function for the Authenticate packet (GENSEC wrapper)
 123  *
 124  * @param gensec_security GENSEC state
 125  * @param out_mem_ctx Memory context for *out
 126  * @param in The request, as a DATA_BLOB.  reply.data must be NULL
 127  * @param out The reply, as an allocated DATA_BLOB, caller to free.
 128  * @return Errors or NT_STATUS_OK if authentication sucessful
 129  */
 130 NTSTATUS gensec_ntlmssp_server_auth(struct gensec_security *gensec_security,
 131                                     TALLOC_CTX *out_mem_ctx,
 132                                     const DATA_BLOB in, DATA_BLOB *out);
 133
 134 /**
 135  * Start NTLMSSP on the server side
 136  *
 137  */
 138 NTSTATUS gensec_ntlmssp_server_start(struct gensec_security *gensec_security);
 139
 140 /**
 141  * Return the credentials of a logged on user, including session keys
 142  * etc.
 143  *
 144  * Only valid after a successful authentication
 145  *
 146  * May only be called once per authentication.
 147  *
 148  */
 149 NTSTATUS gensec_ntlmssp_session_info(struct gensec_security *gensec_security,
 150                                      TALLOC_CTX *mem_ctx,
 151                                      struct auth_session_info **session_info) ;
 152
 153 /* The following definitions come from auth/ntlmssp/gensec_ntlmssp.c  */
 154
 155 NTSTATUS gensec_ntlmssp_sign_packet(struct gensec_security *gensec_security,
 156                                     TALLOC_CTX *sig_mem_ctx,
 157                                     const uint8_t *data, size_t length,
 158                                     const uint8_t *whole_pdu, size_t pdu_length,
 159                                     DATA_BLOB *sig);
 160 NTSTATUS gensec_ntlmssp_check_packet(struct gensec_security *gensec_security,
 161                                      const uint8_t *data, size_t length,
 162                                      const uint8_t *whole_pdu, size_t pdu_length,
 163                                      const DATA_BLOB *sig);
 164 NTSTATUS gensec_ntlmssp_seal_packet(struct gensec_security *gensec_security,
 165                                     TALLOC_CTX *sig_mem_ctx,
 166                                     uint8_t *data, size_t length,
 167                                     const uint8_t *whole_pdu, size_t pdu_length,
 168                                     DATA_BLOB *sig);
 169 NTSTATUS gensec_ntlmssp_unseal_packet(struct gensec_security *gensec_security,
 170                                       uint8_t *data, size_t length,
 171                                       const uint8_t *whole_pdu, size_t pdu_length,
 172                                       const DATA_BLOB *sig);
 173 size_t gensec_ntlmssp_sig_size(struct gensec_security *gensec_security, size_t data_size) ;
 174 NTSTATUS gensec_ntlmssp_wrap(struct gensec_security *gensec_security,
 175                              TALLOC_CTX *out_mem_ctx,
 176                              const DATA_BLOB *in,
 177                              DATA_BLOB *out);
 178 NTSTATUS gensec_ntlmssp_unwrap(struct gensec_security *gensec_security,
 179                                TALLOC_CTX *out_mem_ctx,
 180                                const DATA_BLOB *in,
 181                                DATA_BLOB *out);
 182
 183 /**
 184  * Return the NTLMSSP master session key
 185  *
 186  * @param ntlmssp_state NTLMSSP State
 187  */
 188 NTSTATUS gensec_ntlmssp_magic(struct gensec_security *gensec_security,
 189                               const DATA_BLOB *first_packet);
 190 bool gensec_ntlmssp_have_feature(struct gensec_security *gensec_security,
 191                                  uint32_t feature);
 192 NTSTATUS gensec_ntlmssp_session_key(struct gensec_security *gensec_security,
 193                                     TALLOC_CTX *mem_ctx,
 194                                     DATA_BLOB *session_key);
 195 NTSTATUS gensec_ntlmssp_start(struct gensec_security *gensec_security);
 196