source/auth/auth_developer.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    Copyright (C) Stefan Metzmacher            2005
   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 #include "includes.h"
  24 #include "auth/auth.h"
  25 #include "librpc/gen_ndr/ndr_samr.h"
  26 #include "librpc/gen_ndr/ndr_security.h"
  27 #include "pstring.h"
  28
  29 /**
  30  * Return an error based on username
  31  *
  32  * This function allows the testing of obsure errors, as well as the generation
  33  * of NT_STATUS -> DOS error mapping tables.
  34  *
  35  * This module is of no value to end-users.
  36  *
  37  * The password is ignored.
  38  *
  39  * @return An NTSTATUS value based on the username
  40  **/
  41
  42 static NTSTATUS name_to_ntstatus_check_password(struct auth_method_context *ctx,
  43                                                 TALLOC_CTX *mem_ctx,
  44                                                 const struct auth_usersupplied_info *user_info,
  45                                                 struct auth_serversupplied_info **_server_info)
  46 {
  47         NTSTATUS nt_status;
  48         struct auth_serversupplied_info *server_info;
  49         fstring user;
  50         uint32_t error_num;
  51         fstrcpy(user, user_info->account_name);
  52
  53         if (strncasecmp("NT_STATUS", user, strlen("NT_STATUS")) == 0) {
  54                 nt_status = nt_status_string_to_code(user);
  55         } else {
  56                 error_num = strtoul(user, NULL, 16);
  57                 DEBUG(5,("name_to_ntstatus_check_password: Error for user %s was 0x%08X\n", user, error_num));
  58                 nt_status = NT_STATUS(error_num);
  59         }
  60
  61         if (!NT_STATUS_IS_OK(nt_status)) {
  62                 return nt_status;
  63         }
  64
  65         server_info = talloc(mem_ctx, struct auth_serversupplied_info);
  66         NT_STATUS_HAVE_NO_MEMORY(server_info);
  67
  68         server_info->account_sid = dom_sid_parse_talloc(server_info, SID_NT_ANONYMOUS);
  69         NT_STATUS_HAVE_NO_MEMORY(server_info->account_sid);
  70
  71         /* is this correct? */
  72         server_info->primary_group_sid = dom_sid_parse_talloc(server_info, SID_BUILTIN_GUESTS);
  73         NT_STATUS_HAVE_NO_MEMORY(server_info->primary_group_sid);
  74
  75         server_info->n_domain_groups = 0;
  76         server_info->domain_groups = NULL;
  77
  78         /* annoying, but the Anonymous really does have a session key,
  79            and it is all zeros! */
  80         server_info->user_session_key = data_blob_talloc(server_info, NULL, 16);
  81         NT_STATUS_HAVE_NO_MEMORY(server_info->user_session_key.data);
  82
  83         server_info->lm_session_key = data_blob_talloc(server_info, NULL, 16);
  84         NT_STATUS_HAVE_NO_MEMORY(server_info->lm_session_key.data);
  85
  86         data_blob_clear(&server_info->user_session_key);
  87         data_blob_clear(&server_info->lm_session_key);
  88
  89         server_info->account_name = talloc_asprintf(server_info, "NAME TO NTSTATUS %s ANONYMOUS LOGON", user);
  90         NT_STATUS_HAVE_NO_MEMORY(server_info->account_name);
  91
  92         server_info->domain_name = talloc_strdup(server_info, "NT AUTHORITY");
  93         NT_STATUS_HAVE_NO_MEMORY(server_info->domain_name);
  94
  95         server_info->full_name = talloc_asprintf(server_info, "NAME TO NTSTATUS %s Anonymous Logon", user);
  96         NT_STATUS_HAVE_NO_MEMORY(server_info->full_name);
  97
  98         server_info->logon_script = talloc_strdup(server_info, "");
  99         NT_STATUS_HAVE_NO_MEMORY(server_info->logon_script);
 100
 101         server_info->profile_path = talloc_strdup(server_info, "");
 102         NT_STATUS_HAVE_NO_MEMORY(server_info->profile_path);
 103
 104         server_info->home_directory = talloc_strdup(server_info, "");
 105         NT_STATUS_HAVE_NO_MEMORY(server_info->home_directory);
 106
 107         server_info->home_drive = talloc_strdup(server_info, "");
 108         NT_STATUS_HAVE_NO_MEMORY(server_info->home_drive);
 109
 110         server_info->last_logon = 0;
 111         server_info->last_logoff = 0;
 112         server_info->acct_expiry = 0;
 113         server_info->last_password_change = 0;
 114         server_info->allow_password_change = 0;
 115         server_info->force_password_change = 0;
 116
 117         server_info->logon_count = 0;
 118         server_info->bad_password_count = 0;
 119
 120         server_info->acct_flags = ACB_NORMAL;
 121
 122         server_info->authenticated = False;
 123
 124         *_server_info = server_info;
 125
 126         return nt_status;
 127 }
 128
 129 static struct auth_operations name_to_ntstatus_auth_ops = {
 130         .name           = "name_to_ntstatus",
 131         .get_challenge  = auth_get_challenge_not_implemented,
 132         .check_password = name_to_ntstatus_check_password
 133 };
 134
 135 /**
 136  * Return a 'fixed' challenge instead of a variable one.
 137  *
 138  * The idea of this function is to make packet snifs consistant
 139  * with a fixed challenge, so as to aid debugging.
 140  *
 141  * This module is of no value to end-users.
 142  *
 143  * This module does not actually authenticate the user, but
 144  * just pretenteds to need a specified challenge.
 145  * This module removes *all* security from the challenge-response system
 146  *
 147  * @return NT_STATUS_UNSUCCESSFUL
 148  **/
 149 static NTSTATUS fixed_challenge_get_challenge(struct auth_method_context *ctx, TALLOC_CTX *mem_ctx, DATA_BLOB *_blob)
 150 {
 151         DATA_BLOB blob;
 152         const char *challenge = "I am a teapot";
 153
 154         blob = data_blob_talloc(mem_ctx, challenge, 8);
 155         NT_STATUS_HAVE_NO_MEMORY(blob.data);
 156
 157         *_blob = blob;
 158         return NT_STATUS_OK;
 159 }
 160
 161 static NTSTATUS fixed_challenge_check_password(struct auth_method_context *ctx,
 162                                                TALLOC_CTX *mem_ctx,
 163                                                const struct auth_usersupplied_info *user_info,
 164                                                struct auth_serversupplied_info **_server_info)
 165 {
 166         /* don't handle any users */
 167         return NT_STATUS_NOT_IMPLEMENTED;
 168 }
 169
 170 static struct auth_operations fixed_challenge_auth_ops = {
 171         .name           = "fixed_challenge",
 172         .get_challenge  = fixed_challenge_get_challenge,
 173         .check_password = fixed_challenge_check_password
 174 };
 175
 176 NTSTATUS auth_developer_init(void)
 177 {
 178         NTSTATUS ret;
 179
 180         ret = auth_register(&name_to_ntstatus_auth_ops);
 181         if (!NT_STATUS_IS_OK(ret)) {
 182                 DEBUG(0,("Failed to register 'name_to_ntstatus' auth backend!\n"));
 183                 return ret;
 184         }
 185
 186         ret = auth_register(&fixed_challenge_auth_ops);
 187         if (!NT_STATUS_IS_OK(ret)) {
 188                 DEBUG(0,("Failed to register 'fixed_challenge' auth backend!\n"));
 189                 return ret;
 190         }
 191
 192         return ret;
 193 }