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