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 struct auth_usersupplied_info {
  23         DATA_BLOB lm_resp;
  24         DATA_BLOB nt_resp;
  25         DATA_BLOB lm_interactive_pwd;
  26         DATA_BLOB nt_interactive_pwd;
  27         DATA_BLOB plaintext_password;
  28
  29         bool encrypted;
  30         struct {
  31                 char *account_name;   /* username before/after mapping */
  32                 char *domain_name;    /* username before/after mapping */
  33         } client, mapped;
  34
  35         bool was_mapped;              /* Did the username map actually match? */
  36         char *internal_username;      /* username after mapping */
  37         const char *workstation_name; /* workstation name (netbios calling
  38                                        * name) unicode string */
  39
  40         uint32 logon_parameters;
  41
  42 };
  43
  44 struct extra_auth_info {
  45         struct dom_sid user_sid;
  46         struct dom_sid pgid_sid;
  47 };
  48
  49 struct auth_serversupplied_info {
  50         bool guest;
  51         bool system;
  52
  53         struct unix_user_token utok;
  54
  55         /* NT group information taken from the info3 structure */
  56
  57         NT_USER_TOKEN *ptok;
  58
  59         /* This is the final session key, as used by SMB signing, and
  60          * (truncated to 16 bytes) encryption on the SAMR and LSA pipes
  61          * when over ncacn_np.
  62          * It is calculated by NTLMSSP from the session key in the info3,
  63          * and is  set from the Kerberos session key using
  64          * krb5_auth_con_getremotesubkey().
  65          *
  66          * Bootom line, it is not the same as the session keys in info3.
  67          */
  68
  69         DATA_BLOB user_session_key;
  70         DATA_BLOB lm_session_key;
  71
  72         struct netr_SamInfo3 *info3;
  73
  74         /* this structure is filled *only* in pathological cases where the user
  75          * sid or the primary group sid are not sids of the domain. Normally
  76          * this happens only for unix accounts that have unix domain sids.
  77          * This is checked only when info3.rid and/or info3.primary_gid are set
  78          * to the special invalid value of 0xFFFFFFFF */
  79         struct extra_auth_info extra;
  80
  81         void *pam_handle;
  82
  83         /*
  84          * This is a token from /etc/passwd and /etc/group
  85          */
  86         bool nss_token;
  87
  88         char *unix_name;
  89
  90         /*
  91          * For performance reasons we keep an alpha_strcpy-sanitized version
  92          * of the username around as long as the global variable current_user
  93          * still exists. If we did not do keep this, we'd have to call
  94          * alpha_strcpy whenever we do a become_user(), potentially on every
  95          * smb request. See set_current_user_info.
  96          */
  97         char *sanitized_username;
  98 };
  99
 100 struct auth_context {
 101         DATA_BLOB challenge;
 102
 103         /* Who set this up in the first place? */
 104         const char *challenge_set_by;
 105
 106         bool challenge_may_be_modified;
 107
 108         struct auth_methods *challenge_set_method;
 109         /* What order are the various methods in?   Try to stop it changing under us */
 110         struct auth_methods *auth_method_list;
 111
 112         NTSTATUS (*get_ntlm_challenge)(struct auth_context *auth_context,
 113                                        uint8_t chal[8]);
 114         NTSTATUS (*check_ntlm_password)(const struct auth_context *auth_context,
 115                                         const struct auth_usersupplied_info *user_info,
 116                                         struct auth_serversupplied_info **server_info);
 117         NTSTATUS (*nt_status_squash)(NTSTATUS nt_status);
 118 };
 119
 120 typedef struct auth_methods
 121 {
 122         struct auth_methods *prev, *next;
 123         const char *name; /* What name got this module */
 124
 125         NTSTATUS (*auth)(const struct auth_context *auth_context,
 126                          void *my_private_data,
 127                          TALLOC_CTX *mem_ctx,
 128                          const struct auth_usersupplied_info *user_info,
 129                          struct auth_serversupplied_info **server_info);
 130
 131         /* If you are using this interface, then you are probably
 132          * getting something wrong.  This interface is only for
 133          * security=server, and makes a number of compromises to allow
 134          * that.  It is not compatible with being a PDC.  */
 135         DATA_BLOB (*get_chal)(const struct auth_context *auth_context,
 136                               void **my_private_data,
 137                               TALLOC_CTX *mem_ctx);
 138
 139         /* Used to keep tabs on things like the cli for SMB server authentication */
 140         void *private_data;
 141
 142 } auth_methods;
 143
 144 typedef NTSTATUS (*auth_init_function)(struct auth_context *, const char *, struct auth_methods **);
 145
 146 struct auth_init_function_entry {
 147         const char *name;
 148         /* Function to create a member of the authmethods list */
 149
 150         auth_init_function init;
 151
 152         struct auth_init_function_entry *prev, *next;
 153 };
 154
 155 struct auth_ntlmssp_state;
 156
 157 /* Changed from 1 -> 2 to add the logon_parameters field. */
 158 #define AUTH_INTERFACE_VERSION 2
 159
 160 #endif /* _SMBAUTH_H_ */