source3/include/auth.h

   1 #ifndef _SMBAUTH_H_
   2 #define _SMBAUTH_H_
   3 /*
   4    Unix SMB/CIFS implementation.
   5    Standardised Authentication types
   6    Copyright (C) Andrew Bartlett 2001
   7
   8    This program is free software; you can redistribute it and/or modify
   9    it under the terms of the GNU General Public License as published by
  10    the Free Software Foundation; either version 3 of the License, or
  11    (at your option) any later version.
  12
  13    This program is distributed in the hope that it will be useful,
  14    but WITHOUT ANY WARRANTY; without even the implied warranty of
  15    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  16    GNU General Public License for more details.
  17
  18    You should have received a copy of the GNU General Public License
  19    along with this program.  If not, see <http://www.gnu.org/licenses/>.
  20 */
  21
  22 #include "../auth/common_auth.h"
  23
  24 struct gensec_security;
  25
  26 struct extra_auth_info {
  27         struct dom_sid user_sid;
  28         struct dom_sid pgid_sid;
  29 };
  30
  31 struct auth_serversupplied_info {
  32         bool guest;
  33         bool system;
  34
  35         struct security_unix_token utok;
  36
  37         /* NT group information taken from the info3 structure */
  38
  39         struct security_token *security_token;
  40
  41         /* These are the intermediate session keys, as provided by a
  42          * NETLOGON server and used by NTLMSSP to negotiate key
  43          * exchange etc (which will provide the session_key in the
  44          * auth_session_info).  It is usually the same as the keys in
  45          * the info3, but is a variable length structure here to allow
  46          * it to be omitted if the auth module does not know it.
  47          */
  48
  49         DATA_BLOB session_key;
  50         DATA_BLOB lm_session_key;
  51
  52         struct netr_SamInfo3 *info3;
  53
  54         /* this structure is filled *only* in pathological cases where the user
  55          * sid or the primary group sid are not sids of the domain. Normally
  56          * this happens only for unix accounts that have unix domain sids.
  57          * This is checked only when info3.rid and/or info3.primary_gid are set
  58          * to the special invalid value of 0xFFFFFFFF */
  59         struct extra_auth_info extra;
  60
  61         /*
  62          * This is a token from /etc/passwd and /etc/group
  63          */
  64         bool nss_token;
  65
  66         char *unix_name;
  67 };
  68
  69 typedef NTSTATUS (*prepare_gensec_fn)(TALLOC_CTX *mem_ctx,
  70                                       struct gensec_security **gensec_context);
  71
  72 typedef NTSTATUS (*make_auth4_context_fn)(TALLOC_CTX *mem_ctx,
  73                                           struct auth4_context **auth4_context);
  74
  75 struct auth_context {
  76         DATA_BLOB challenge;
  77
  78         /* Who set this up in the first place? */
  79         const char *challenge_set_by;
  80
  81         bool challenge_may_be_modified;
  82
  83         struct auth_methods *challenge_set_method;
  84         /* What order are the various methods in?   Try to stop it changing under us */
  85         struct auth_methods *auth_method_list;
  86
  87         prepare_gensec_fn prepare_gensec;
  88         make_auth4_context_fn make_auth4_context;
  89 };
  90
  91 typedef struct auth_methods
  92 {
  93         struct auth_methods *prev, *next;
  94         const char *name; /* What name got this module */
  95
  96         NTSTATUS (*auth)(const struct auth_context *auth_context,
  97                          void *my_private_data,
  98                          TALLOC_CTX *mem_ctx,
  99                          const struct auth_usersupplied_info *user_info,
 100                          struct auth_serversupplied_info **server_info);
 101
 102         /* If you are using this interface, then you are probably
 103          * getting something wrong.  This interface is only for
 104          * security=server, and makes a number of compromises to allow
 105          * that.  It is not compatible with being a PDC.  */
 106         DATA_BLOB (*get_chal)(const struct auth_context *auth_context,
 107                               void **my_private_data,
 108                               TALLOC_CTX *mem_ctx);
 109
 110         /* Optional methods allowing this module to provide a way to get a gensec context and an auth4_context */
 111         prepare_gensec_fn prepare_gensec;
 112         make_auth4_context_fn make_auth4_context;
 113         /* Used to keep tabs on things like the cli for SMB server authentication */
 114         void *private_data;
 115
 116 } auth_methods;
 117
 118 typedef NTSTATUS (*auth_init_function)(struct auth_context *, const char *, struct auth_methods **);
 119
 120 struct auth_init_function_entry {
 121         const char *name;
 122         /* Function to create a member of the authmethods list */
 123
 124         auth_init_function init;
 125
 126         struct auth_init_function_entry *prev, *next;
 127 };
 128
 129 extern const struct gensec_security_ops gensec_ntlmssp3_server_ops;
 130
 131 /* Intent of use for session key. LSA and SAMR pipes use 16 bytes of session key when doing create/modify calls */
 132 enum session_key_use_intent {
 133         KEY_USE_FULL = 0,
 134         KEY_USE_16BYTES
 135 };
 136
 137 /* Changed from 1 -> 2 to add the logon_parameters field. */
 138 /* Changed from 2 -> 3 when we reworked many auth structures to use IDL or be in common with Samba4 */
 139 #define AUTH_INTERFACE_VERSION 3
 140
 141 #include "auth/proto.h"
 142
 143 #endif /* _SMBAUTH_H_ */