source4/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 #include "libcli/auth/credentials.h"
  26 #include "auth/gensec/gensec.h"
  27 #include "auth/gensec/spnego.h"
  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 #define AUTH_INTERFACE_VERSION 4
  38
  39 #define USER_INFO_CASE_INSENSITIVE_USERNAME 0x01 /* username may be in any case */
  40 #define USER_INFO_CASE_INSENSITIVE_PASSWORD 0x02 /* password may be in any case */
  41 #define USER_INFO_DONT_CHECK_UNIX_ACCOUNT   0x04 /* dont check unix account status */
  42 #define USER_INFO_INTERACTIVE_LOGON         0x08 /* dont check unix account status */
  43
  44 enum auth_password_state {
  45         AUTH_PASSWORD_RESPONSE,
  46         AUTH_PASSWORD_HASH,
  47         AUTH_PASSWORD_PLAIN
  48 };
  49
  50 struct auth_usersupplied_info
  51 {
  52         const char *workstation_name;
  53         const char *remote_host;
  54
  55         uint32_t logon_parameters;
  56
  57         BOOL mapped_state;
  58         /* the values the client gives us */
  59         struct {
  60                 const char *account_name;
  61                 const char *domain_name;
  62         } client, mapped;
  63
  64         enum auth_password_state password_state;
  65
  66         union {
  67                 struct {
  68                         DATA_BLOB lanman;
  69                         DATA_BLOB nt;
  70                 } response;
  71                 struct {
  72                         struct samr_Password *lanman;
  73                         struct samr_Password *nt;
  74                 } hash;
  75
  76                 char *plaintext;
  77         } password;
  78         uint32_t flags;
  79 };
  80
  81 struct auth_serversupplied_info
  82 {
  83         struct dom_sid *account_sid;
  84         struct dom_sid *primary_group_sid;
  85
  86         size_t n_domain_groups;
  87         struct dom_sid **domain_groups;
  88
  89         DATA_BLOB user_session_key;
  90         DATA_BLOB lm_session_key;
  91
  92         const char *account_name;
  93         const char *domain_name;
  94
  95         const char *full_name;
  96         const char *logon_script;
  97         const char *profile_path;
  98         const char *home_directory;
  99         const char *home_drive;
 100         const char *logon_server;
 101
 102         NTTIME last_logon;
 103         NTTIME last_logoff;
 104         NTTIME acct_expiry;
 105         NTTIME last_password_change;
 106         NTTIME allow_password_change;
 107         NTTIME force_password_change;
 108
 109         uint16_t logon_count;
 110         uint16_t bad_password_count;
 111
 112         uint32_t acct_flags;
 113
 114         BOOL authenticated;
 115 };
 116
 117 struct auth_session_info {
 118         struct security_token *security_token;
 119         struct auth_serversupplied_info *server_info;
 120         DATA_BLOB session_key;
 121         struct cli_credentials *credentials;
 122 };
 123
 124 struct auth_method_context;
 125
 126 struct auth_operations {
 127         const char *name;
 128
 129         /* If you are using this interface, then you are probably
 130          * getting something wrong.  This interface is only for
 131          * security=server, and makes a number of compromises to allow
 132          * that.  It is not compatible with being a PDC.  */
 133
 134         NTSTATUS (*get_challenge)(struct auth_method_context *ctx, TALLOC_CTX *mem_ctx, DATA_BLOB *challenge);
 135
 136         /* Given the user supplied info, check a password */
 137
 138         NTSTATUS (*check_password)(struct auth_method_context *ctx, TALLOC_CTX *mem_ctx,
 139                                    const struct auth_usersupplied_info *user_info,
 140                                    struct auth_serversupplied_info **server_info);
 141 };
 142
 143 struct auth_method_context {
 144         struct auth_method_context *prev, *next;
 145         struct auth_context *auth_ctx;
 146         const struct auth_operations *ops;
 147         int depth;
 148         void *private_data;
 149 };
 150
 151 struct auth_context {
 152         struct {
 153                 /* Who set this up in the first place? */
 154                 const char *set_by;
 155
 156                 BOOL may_be_modified;
 157
 158                 DATA_BLOB data;
 159         } challenge;
 160
 161         /* methods, in the order they should be called */
 162         struct auth_method_context *methods;
 163
 164         /* the event context to use for calls that can block */
 165         struct event_context *event_ctx;
 166 };
 167
 168 /* this structure is used by backends to determine the size of some critical types */
 169 struct auth_critical_sizes {
 170         int interface_version;
 171         int sizeof_auth_operations;
 172         int sizeof_auth_methods;
 173         int sizeof_auth_context;
 174         int sizeof_auth_usersupplied_info;
 175         int sizeof_auth_serversupplied_info;
 176 };
 177
 178  NTSTATUS encrypt_user_info(TALLOC_CTX *mem_ctx, struct auth_context *auth_context,
 179                            enum auth_password_state to_state,
 180                            const struct auth_usersupplied_info *user_info_in,
 181                            const struct auth_usersupplied_info **user_info_encrypted);
 182
 183
 184 #endif /* _SMBAUTH_H_ */