source/auth/auth.h

   1 /*
   2    Unix SMB/CIFS implementation.
   3    Standardised Authentication types
   4    Copyright (C) Andrew Bartlett   2001
   5    Copyright (C) Stefan Metzmacher 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 2 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, write to the Free Software
  19    Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
  20 */
  21
  22 #ifndef _SAMBA_AUTH_H
  23 #define _SAMBA_AUTH_H
  24
  25 union netr_Validation;
  26 struct netr_SamBaseInfo;
  27 struct netr_SamInfo3;
  28
  29 /* modules can use the following to determine if the interface has changed
  30  * please increment the version number after each interface change
  31  * with a comment and maybe update struct auth_critical_sizes.
  32  */
  33 /* version 1 - version from samba 3.0 - metze */
  34 /* version 2 - initial samba4 version - metze */
  35 /* version 3 - subsequent samba4 version - abartlet */
  36 /* version 4 - subsequent samba4 version - metze */
  37 /* version 0 - till samba4 is stable - metze */
  38 #define AUTH_INTERFACE_VERSION 0
  39
  40 #define USER_INFO_CASE_INSENSITIVE_USERNAME 0x01 /* username may be in any case */
  41 #define USER_INFO_CASE_INSENSITIVE_PASSWORD 0x02 /* password may be in any case */
  42 #define USER_INFO_DONT_CHECK_UNIX_ACCOUNT   0x04 /* dont check unix account status */
  43 #define USER_INFO_INTERACTIVE_LOGON         0x08 /* dont check unix account status */
  44
  45 enum auth_password_state {
  46         AUTH_PASSWORD_RESPONSE,
  47         AUTH_PASSWORD_HASH,
  48         AUTH_PASSWORD_PLAIN
  49 };
  50
  51 struct auth_usersupplied_info
  52 {
  53         const char *workstation_name;
  54         struct socket_address *remote_host;
  55
  56         uint32_t logon_parameters;
  57
  58         BOOL mapped_state;
  59         /* the values the client gives us */
  60         struct {
  61                 const char *account_name;
  62                 const char *domain_name;
  63         } client, mapped;
  64
  65         enum auth_password_state password_state;
  66
  67         union {
  68                 struct {
  69                         DATA_BLOB lanman;
  70                         DATA_BLOB nt;
  71                 } response;
  72                 struct {
  73                         struct samr_Password *lanman;
  74                         struct samr_Password *nt;
  75                 } hash;
  76
  77                 char *plaintext;
  78         } password;
  79         uint32_t flags;
  80 };
  81
  82 struct auth_serversupplied_info
  83 {
  84         struct dom_sid *account_sid;
  85         struct dom_sid *primary_group_sid;
  86
  87         size_t n_domain_groups;
  88         struct dom_sid **domain_groups;
  89
  90         DATA_BLOB user_session_key;
  91         DATA_BLOB lm_session_key;
  92
  93         const char *account_name;
  94         const char *domain_name;
  95
  96         const char *full_name;
  97         const char *logon_script;
  98         const char *profile_path;
  99         const char *home_directory;
 100         const char *home_drive;
 101         const char *logon_server;
 102
 103         NTTIME last_logon;
 104         NTTIME last_logoff;
 105         NTTIME acct_expiry;
 106         NTTIME last_password_change;
 107         NTTIME allow_password_change;
 108         NTTIME force_password_change;
 109
 110         uint16_t logon_count;
 111         uint16_t bad_password_count;
 112
 113         uint32_t acct_flags;
 114
 115         BOOL authenticated;
 116 };
 117
 118 struct auth_session_info {
 119         struct security_token *security_token;
 120         struct auth_serversupplied_info *server_info;
 121         DATA_BLOB session_key;
 122         struct cli_credentials *credentials;
 123 };
 124
 125 struct auth_method_context;
 126 struct auth_check_password_request;
 127
 128 struct auth_operations {
 129         const char *name;
 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
 136         NTSTATUS (*get_challenge)(struct auth_method_context *ctx, TALLOC_CTX *mem_ctx, DATA_BLOB *challenge);
 137
 138         /* Given the user supplied info, check if this backend want to handle the password checking */
 139
 140         NTSTATUS (*want_check)(struct auth_method_context *ctx, TALLOC_CTX *mem_ctx,
 141                                const struct auth_usersupplied_info *user_info);
 142
 143         /* Given the user supplied info, check a password */
 144
 145         NTSTATUS (*check_password)(struct auth_method_context *ctx, TALLOC_CTX *mem_ctx,
 146                                    const struct auth_usersupplied_info *user_info,
 147                                    struct auth_serversupplied_info **server_info);
 148 };
 149
 150 struct auth_method_context {
 151         struct auth_method_context *prev, *next;
 152         struct auth_context *auth_ctx;
 153         const struct auth_operations *ops;
 154         int depth;
 155         void *private_data;
 156 };
 157
 158 struct auth_context {
 159         struct {
 160                 /* Who set this up in the first place? */
 161                 const char *set_by;
 162
 163                 BOOL may_be_modified;
 164
 165                 DATA_BLOB data;
 166         } challenge;
 167
 168         /* methods, in the order they should be called */
 169         struct auth_method_context *methods;
 170
 171         /* the event context to use for calls that can block */
 172         struct event_context *event_ctx;
 173
 174         /* the messaging context which can be used by backends */
 175         struct messaging_context *msg_ctx;
 176 };
 177
 178 /* this structure is used by backends to determine the size of some critical types */
 179 struct auth_critical_sizes {
 180         int interface_version;
 181         int sizeof_auth_operations;
 182         int sizeof_auth_methods;
 183         int sizeof_auth_context;
 184         int sizeof_auth_usersupplied_info;
 185         int sizeof_auth_serversupplied_info;
 186 };
 187
 188  NTSTATUS encrypt_user_info(TALLOC_CTX *mem_ctx, struct auth_context *auth_context,
 189                            enum auth_password_state to_state,
 190                            const struct auth_usersupplied_info *user_info_in,
 191                            const struct auth_usersupplied_info **user_info_encrypted);
 192
 193 #include "auth/auth_proto.h"
 194
 195 #endif /* _SMBAUTH_H_ */