source/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 2 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, write to the Free Software
  20    Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
  21 */
  22
  23 /* AUTH_STR - string */
  24 typedef struct normal_string
  25 {
  26         int len;
  27         char *str;
  28 } AUTH_STR;
  29
  30 typedef struct auth_usersupplied_info
  31 {
  32
  33         DATA_BLOB lm_resp;
  34         DATA_BLOB nt_resp;
  35         DATA_BLOB lm_interactive_pwd;
  36         DATA_BLOB nt_interactive_pwd;
  37         DATA_BLOB plaintext_password;
  38
  39         BOOL encrypted;
  40
  41         AUTH_STR           client_domain;          /* domain name string */
  42         AUTH_STR           domain;               /* domain name after mapping */
  43         AUTH_STR           internal_username;    /* username after mapping */
  44         AUTH_STR           smb_name;        /* username before mapping */
  45         AUTH_STR           wksta_name;           /* workstation name (netbios calling name) unicode string */
  46
  47 } auth_usersupplied_info;
  48
  49 #define SAM_FILL_NAME  0x01
  50 #define SAM_FILL_INFO3 0x02
  51 #define SAM_FILL_SAM   0x04
  52 #define SAM_FILL_UNIX  0x08
  53 #define SAM_FILL_ALL (SAM_FILL_NAME | SAM_FILL_INFO3 | SAM_FILL_SAM | SAM_FILL_UNIX)
  54
  55 typedef struct auth_serversupplied_info
  56 {
  57         BOOL guest;
  58
  59         uid_t uid;
  60         gid_t gid;
  61
  62         /* This groups info is needed for when we become_user() for this uid */
  63         int n_groups;
  64         gid_t *groups;
  65
  66         /* NT group information taken from the info3 structure */
  67
  68         NT_USER_TOKEN *ptok;
  69
  70         DATA_BLOB user_session_key;
  71         DATA_BLOB lm_session_key;
  72
  73         char *login_server; /* which server authorized the login? */
  74
  75         uint32 sam_fill_level;  /* How far is this structure filled? */
  76
  77         SAM_ACCOUNT *sam_account;
  78
  79         void *pam_handle;
  80
  81         char *unix_name;
  82
  83 } auth_serversupplied_info;
  84
  85 struct auth_context {
  86         DATA_BLOB challenge;
  87
  88         /* Who set this up in the first place? */
  89         const char *challenge_set_by;
  90
  91         BOOL challenge_may_be_modified;
  92
  93         struct auth_methods *challenge_set_method;
  94         /* What order are the various methods in?   Try to stop it changing under us */
  95         struct auth_methods *auth_method_list;
  96
  97         TALLOC_CTX *mem_ctx;
  98         const uint8 *(*get_ntlm_challenge)(struct auth_context *auth_context);
  99         NTSTATUS (*check_ntlm_password)(const struct auth_context *auth_context,
 100                                         const struct auth_usersupplied_info *user_info,
 101                                         struct auth_serversupplied_info **server_info);
 102         NTSTATUS (*nt_status_squash)(NTSTATUS nt_status);
 103         void (*free)(struct auth_context **auth_context);
 104 };
 105
 106 typedef struct auth_methods
 107 {
 108         struct auth_methods *prev, *next;
 109         const char *name; /* What name got this module */
 110
 111         NTSTATUS (*auth)(const struct auth_context *auth_context,
 112                          void *my_private_data,
 113                          TALLOC_CTX *mem_ctx,
 114                          const struct auth_usersupplied_info *user_info,
 115                          auth_serversupplied_info **server_info);
 116
 117         /* If you are using this interface, then you are probably
 118          * getting something wrong.  This interface is only for
 119          * security=server, and makes a number of compromises to allow
 120          * that.  It is not compatible with being a PDC.  */
 121         DATA_BLOB (*get_chal)(const struct auth_context *auth_context,
 122                               void **my_private_data,
 123                               TALLOC_CTX *mem_ctx);
 124
 125         /* Used to keep tabs on things like the cli for SMB server authentication */
 126         void *private_data;
 127
 128         /* Function to clean up the above arbitary structure */
 129         void (*free_private_data)(void **private_data);
 130
 131         /* Function to send a keepalive message on the above structure */
 132         void (*send_keepalive)(void **private_data);
 133
 134 } auth_methods;
 135
 136 typedef NTSTATUS (*auth_init_function)(struct auth_context *, const char *, struct auth_methods **);
 137
 138 struct auth_init_function_entry {
 139         const char *name;
 140         /* Function to create a member of the authmethods list */
 141
 142         auth_init_function init;
 143
 144         struct auth_init_function_entry *prev, *next;
 145 };
 146
 147 typedef struct auth_ntlmssp_state
 148 {
 149         TALLOC_CTX *mem_ctx;
 150         struct auth_context *auth_context;
 151         struct auth_serversupplied_info *server_info;
 152         struct ntlmssp_state *ntlmssp_state;
 153 } AUTH_NTLMSSP_STATE;
 154
 155 #define AUTH_INTERFACE_VERSION 1
 156
 157 #endif /* _SMBAUTH_H_ */