source3/auth/auth_builtin.c

   1 /*
   2    Unix SMB/CIFS implementation.
   3    Generic authentication types
   4    Copyright (C) Andrew Bartlett         2001-2002
   5    Copyright (C) Jelmer Vernooij              2002
   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 3 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, see <http://www.gnu.org/licenses/>.
  19 */
  20
  21 #include "includes.h"
  22 #include "auth.h"
  23
  24 #undef DBGC_CLASS
  25 #define DBGC_CLASS DBGC_AUTH
  26
  27 /**
  28  * Return a guest logon for guest users (username = "")
  29  *
  30  * Typically used as the first module in the auth chain, this allows
  31  * guest logons to be dealt with in one place.  Non-guest logons 'fail'
  32  * and pass onto the next module.
  33  **/
  34
  35 static NTSTATUS check_guest_security(const struct auth_context *auth_context,
  36                                      void *my_private_data,
  37                                      TALLOC_CTX *mem_ctx,
  38                                      const struct auth_usersupplied_info *user_info,
  39                                      struct auth_serversupplied_info **server_info)
  40 {
  41         /* mark this as 'not for me' */
  42         NTSTATUS nt_status = NT_STATUS_NOT_IMPLEMENTED;
  43
  44         DEBUG(10, ("Check auth for: [%s]\n", user_info->mapped.account_name));
  45
  46         if (!(user_info->mapped.account_name
  47               && *user_info->mapped.account_name)) {
  48                 nt_status = make_server_info_guest(NULL, server_info);
  49         }
  50
  51         return nt_status;
  52 }
  53
  54 /* Guest modules initialisation */
  55
  56 static NTSTATUS auth_init_guest(struct auth_context *auth_context, const char *options, auth_methods **auth_method)
  57 {
  58         struct auth_methods *result;
  59
  60         result = talloc_zero(auth_context, struct auth_methods);
  61         if (result == NULL) {
  62                 return NT_STATUS_NO_MEMORY;
  63         }
  64         result->auth = check_guest_security;
  65         result->name = "guest";
  66
  67         *auth_method = result;
  68         return NT_STATUS_OK;
  69 }
  70
  71 #ifdef DEVELOPER
  72 /**
  73  * Return an error based on username
  74  *
  75  * This function allows the testing of obsure errors, as well as the generation
  76  * of NT_STATUS -> DOS error mapping tables.
  77  *
  78  * This module is of no value to end-users.
  79  *
  80  * The password is ignored.
  81  *
  82  * @return An NTSTATUS value based on the username
  83  **/
  84
  85 static NTSTATUS check_name_to_ntstatus_security(const struct auth_context *auth_context,
  86                                                 void *my_private_data,
  87                                                 TALLOC_CTX *mem_ctx,
  88                                                 const struct auth_usersupplied_info *user_info,
  89                                                 struct auth_serversupplied_info **server_info)
  90 {
  91         NTSTATUS nt_status;
  92         fstring user;
  93         long error_num;
  94
  95         DEBUG(10, ("Check auth for: [%s]\n", user_info->mapped.account_name));
  96
  97         fstrcpy(user, user_info->client.account_name);
  98
  99         if (strnequal("NT_STATUS", user, strlen("NT_STATUS"))) {
 100                 if (!strupper_m(user)) {
 101                         return NT_STATUS_INVALID_PARAMETER;
 102                 }
 103                 return nt_status_string_to_code(user);
 104         }
 105
 106         if (!strlower_m(user)) {
 107                 return NT_STATUS_INVALID_PARAMETER;
 108         }
 109         error_num = strtoul(user, NULL, 16);
 110
 111         DEBUG(5,("check_name_to_ntstatus_security: Error for user %s was %lx\n", user, error_num));
 112
 113         nt_status = NT_STATUS(error_num);
 114
 115         return nt_status;
 116 }
 117
 118 /** Module initialisation function */
 119
 120 static NTSTATUS auth_init_name_to_ntstatus(struct auth_context *auth_context, const char *param, auth_methods **auth_method)
 121 {
 122         struct auth_methods *result;
 123
 124         result = talloc_zero(auth_context, struct auth_methods);
 125         if (result == NULL) {
 126                 return NT_STATUS_NO_MEMORY;
 127         }
 128         result->auth = check_name_to_ntstatus_security;
 129         result->name = "name_to_ntstatus";
 130
 131         *auth_method = result;
 132         return NT_STATUS_OK;
 133 }
 134
 135 #endif /* DEVELOPER */
 136
 137 NTSTATUS auth_builtin_init(void)
 138 {
 139         smb_register_auth(AUTH_INTERFACE_VERSION, "guest", auth_init_guest);
 140 #ifdef DEVELOPER
 141         smb_register_auth(AUTH_INTERFACE_VERSION, "name_to_ntstatus", auth_init_name_to_ntstatus);
 142 #endif
 143         return NT_STATUS_OK;
 144 }