libcli/smb/smb2_negotiate_context.h

   1 /*
   2    Unix SMB/CIFS implementation.
   3
   4    Copyright (C) Stefan Metzmacher 2014
   5
   6    This program is free software; you can redistribute it and/or modify
   7    it under the terms of the GNU General Public License as published by
   8    the Free Software Foundation; either version 3 of the License, or
   9    (at your option) any later version.
  10
  11    This program is distributed in the hope that it will be useful,
  12    but WITHOUT ANY WARRANTY; without even the implied warranty of
  13    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  14    GNU General Public License for more details.
  15
  16    You should have received a copy of the GNU General Public License
  17    along with this program.  If not, see <http://www.gnu.org/licenses/>.
  18 */
  19
  20 #ifndef _LIBCLI_SMB_SMB2_NEGOTIATE_BLOB_H_
  21 #define _LIBCLI_SMB_SMB2_NEGOTIATE_BLOB_H_
  22
  23 struct smb2_negotiate_context {
  24         uint16_t type;
  25         DATA_BLOB data;
  26 };
  27
  28 struct smb2_negotiate_contexts {
  29         uint16_t num_contexts;
  30         struct smb2_negotiate_context *contexts;
  31 };
  32
  33 /*
  34   parse a set of SMB2 negotiate contexts
  35 */
  36 NTSTATUS smb2_negotiate_context_parse(TALLOC_CTX *mem_ctx, const DATA_BLOB buffer,
  37                                       uint16_t expected_count,
  38                                       struct smb2_negotiate_contexts *contexts);
  39
  40 /*
  41   negotiate a buffer of a set of negotiate contexts
  42 */
  43 NTSTATUS smb2_negotiate_context_push(TALLOC_CTX *mem_ctx, DATA_BLOB *buffer,
  44                                const struct smb2_negotiate_contexts contexts);
  45
  46 NTSTATUS smb2_negotiate_context_add(TALLOC_CTX *mem_ctx,
  47                                     struct smb2_negotiate_contexts *c,
  48                                     uint16_t type,
  49                                     const uint8_t *buf,
  50                                     size_t buflen);
  51
  52 /*
  53  * return the first context with the given tag
  54  */
  55 struct smb2_negotiate_context *smb2_negotiate_context_find(const struct smb2_negotiate_contexts *b,
  56                                                            uint16_t type);
  57 #define WINDOWS_CLIENT_PURE_SMB2_NEGPROT_INITIAL_CREDIT_ASK     31
  58
  59 struct smb3_signing_capabilities {
  60 #define SMB3_SIGNING_CAPABILITIES_MAX_ALGOS 3
  61         uint16_t num_algos;
  62         uint16_t algos[SMB3_SIGNING_CAPABILITIES_MAX_ALGOS];
  63 };
  64
  65 struct smb3_encryption_capabilities {
  66 #define SMB3_ENCRYTION_CAPABILITIES_MAX_ALGOS 4
  67         uint16_t num_algos;
  68         uint16_t algos[SMB3_ENCRYTION_CAPABILITIES_MAX_ALGOS];
  69 };
  70
  71 struct smb311_capabilities {
  72         struct smb3_signing_capabilities signing;
  73         struct smb3_encryption_capabilities encryption;
  74 };
  75
  76 const char *smb3_signing_algorithm_name(uint16_t algo);
  77 const char *smb3_encryption_algorithm_name(uint16_t algo);
  78
  79 struct smb311_capabilities smb311_capabilities_parse(const char *role,
  80                                 const char * const *signing_algos,
  81                                 const char * const *encryption_algos);
  82
  83 NTSTATUS smb311_capabilities_check(const struct smb311_capabilities *c,
  84                                    const char *debug_prefix,
  85                                    int debug_lvl,
  86                                    NTSTATUS error_status,
  87                                    const char *role,
  88                                    enum protocol_types protocol,
  89                                    uint16_t sign_algo,
  90                                    uint16_t cipher_algo);
  91
  92 #endif /* _LIBCLI_SMB_SMB2_NEGOTIATE_BLOB_H_ */