libcli/smb/smb_seal.h

   1 /*
   2    Unix SMB/CIFS implementation.
   3    SMB Transport encryption code.
   4    Copyright (C) Jeremy Allison 2007.
   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 _HEADER_SMB_CRYPT_H
  21 #define _HEADER_SMB_CRYPT_H
  22
  23 #if HAVE_GSSAPI_GSSAPI_H
  24 #include <gssapi/gssapi.h>
  25 #elif HAVE_GSSAPI_GSSAPI_GENERIC_H
  26 #include <gssapi/gssapi_generic.h>
  27 #elif HAVE_GSSAPI_H
  28 #include <gssapi.h>
  29 #endif
  30
  31 /* Transport encryption state. */
  32 enum smb_trans_enc_type {
  33                 SMB_TRANS_ENC_NTLM
  34 #if defined(HAVE_GSSAPI) && defined(HAVE_KRB5)
  35                 , SMB_TRANS_ENC_GSS
  36 #endif
  37 };
  38
  39 #if defined(HAVE_GSSAPI) && defined(HAVE_KRB5)
  40 struct smb_tran_enc_state_gss {
  41         gss_ctx_id_t gss_ctx;
  42         gss_cred_id_t creds;
  43 };
  44 #endif
  45
  46 struct smb_trans_enc_state {
  47         enum smb_trans_enc_type smb_enc_type;
  48         uint16_t enc_ctx_num;
  49         bool enc_on;
  50         union {
  51                 struct gensec_security *gensec_security;
  52 #if defined(HAVE_GSSAPI) && defined(HAVE_KRB5)
  53                 struct smb_tran_enc_state_gss *gss_state;
  54 #endif
  55         } s;
  56 };
  57
  58 /* The following definitions come from smb_seal.c  */
  59
  60 NTSTATUS get_enc_ctx_num(const uint8_t *buf, uint16_t *p_enc_ctx_num);
  61 bool common_encryption_on(struct smb_trans_enc_state *es);
  62 NTSTATUS common_encrypt_buffer(struct smb_trans_enc_state *es, char *buffer, char **buf_out);
  63 NTSTATUS common_decrypt_buffer(struct smb_trans_enc_state *es, char *buf);
  64 void common_free_encryption_state(struct smb_trans_enc_state **pp_es);
  65 void common_free_enc_buffer(struct smb_trans_enc_state *es, char *buf);
  66
  67 #endif /* _HEADER_SMB_CRYPT_H */