source4/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 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 #include "includes.h"
  23 #include "auth/auth.h"
  24 #include "libcli/security/security.h"
  25 #include "librpc/gen_ndr/ndr_samr.h"
  26
  27 static NTSTATUS name_to_ntstatus_want_check(struct auth_method_context *ctx,
  28                                             TALLOC_CTX *mem_ctx,
  29                                             const struct auth_usersupplied_info *user_info)
  30 {
  31         return NT_STATUS_OK;
  32 }
  33
  34 /**
  35  * Return an error based on username
  36  *
  37  * This function allows the testing of obsure errors, as well as the generation
  38  * of NT_STATUS -> DOS error mapping tables.
  39  *
  40  * This module is of no value to end-users.
  41  *
  42  * The password is ignored.
  43  *
  44  * @return An NTSTATUS value based on the username
  45  **/
  46
  47 static NTSTATUS name_to_ntstatus_check_password(struct auth_method_context *ctx,
  48                                                 TALLOC_CTX *mem_ctx,
  49                                                 const struct auth_usersupplied_info *user_info,
  50                                                 struct auth_serversupplied_info **_server_info)
  51 {
  52         NTSTATUS nt_status;
  53         struct auth_serversupplied_info *server_info;
  54         uint32_t error_num;
  55         const char *user;
  56
  57         user = user_info->client.account_name;
  58
  59         if (strncasecmp("NT_STATUS", user, strlen("NT_STATUS")) == 0) {
  60                 nt_status = nt_status_string_to_code(user);
  61         } else {
  62                 error_num = strtoul(user, NULL, 16);
  63                 DEBUG(5,("name_to_ntstatus_check_password: Error for user %s was 0x%08X\n", user, error_num));
  64                 nt_status = NT_STATUS(error_num);
  65         }
  66         NT_STATUS_NOT_OK_RETURN(nt_status);
  67
  68         server_info = talloc(mem_ctx, struct auth_serversupplied_info);
  69         NT_STATUS_HAVE_NO_MEMORY(server_info);
  70
  71         server_info->account_sid = dom_sid_parse_talloc(server_info, SID_NT_ANONYMOUS);
  72         NT_STATUS_HAVE_NO_MEMORY(server_info->account_sid);
  73
  74         /* is this correct? */
  75         server_info->primary_group_sid = dom_sid_parse_talloc(server_info, SID_BUILTIN_GUESTS);
  76         NT_STATUS_HAVE_NO_MEMORY(server_info->primary_group_sid);
  77
  78         server_info->n_domain_groups = 0;
  79         server_info->domain_groups = NULL;
  80
  81         /* annoying, but the Anonymous really does have a session key,
  82            and it is all zeros! */
  83         server_info->user_session_key = data_blob_talloc(server_info, NULL, 16);
  84         NT_STATUS_HAVE_NO_MEMORY(server_info->user_session_key.data);
  85
  86         server_info->lm_session_key = data_blob_talloc(server_info, NULL, 16);
  87         NT_STATUS_HAVE_NO_MEMORY(server_info->lm_session_key.data);
  88
  89         data_blob_clear(&server_info->user_session_key);
  90         data_blob_clear(&server_info->lm_session_key);
  91
  92         server_info->account_name = talloc_asprintf(server_info, "NAME TO NTSTATUS %s ANONYMOUS LOGON", user);
  93         NT_STATUS_HAVE_NO_MEMORY(server_info->account_name);
  94
  95         server_info->domain_name = talloc_strdup(server_info, "NT AUTHORITY");
  96         NT_STATUS_HAVE_NO_MEMORY(server_info->domain_name);
  97
  98         server_info->full_name = talloc_asprintf(server_info, "NAME TO NTSTATUS %s Anonymous Logon", user);
  99         NT_STATUS_HAVE_NO_MEMORY(server_info->full_name);
 100
 101         server_info->logon_script = talloc_strdup(server_info, "");
 102         NT_STATUS_HAVE_NO_MEMORY(server_info->logon_script);
 103
 104         server_info->profile_path = talloc_strdup(server_info, "");
 105         NT_STATUS_HAVE_NO_MEMORY(server_info->profile_path);
 106
 107         server_info->home_directory = talloc_strdup(server_info, "");
 108         NT_STATUS_HAVE_NO_MEMORY(server_info->home_directory);
 109
 110         server_info->home_drive = talloc_strdup(server_info, "");
 111         NT_STATUS_HAVE_NO_MEMORY(server_info->home_drive);
 112
 113         server_info->last_logon = 0;
 114         server_info->last_logoff = 0;
 115         server_info->acct_expiry = 0;
 116         server_info->last_password_change = 0;
 117         server_info->allow_password_change = 0;
 118         server_info->force_password_change = 0;
 119
 120         server_info->logon_count = 0;
 121         server_info->bad_password_count = 0;
 122
 123         server_info->acct_flags = ACB_NORMAL;
 124
 125         server_info->authenticated = false;
 126
 127         *_server_info = server_info;
 128
 129         return nt_status;
 130 }
 131
 132 static const struct auth_operations name_to_ntstatus_auth_ops = {
 133         .name           = "name_to_ntstatus",
 134         .get_challenge  = auth_get_challenge_not_implemented,
 135         .want_check     = name_to_ntstatus_want_check,
 136         .check_password = name_to_ntstatus_check_password
 137 };
 138
 139 /**
 140  * Return a 'fixed' challenge instead of a variable one.
 141  *
 142  * The idea of this function is to make packet snifs consistant
 143  * with a fixed challenge, so as to aid debugging.
 144  *
 145  * This module is of no value to end-users.
 146  *
 147  * This module does not actually authenticate the user, but
 148  * just pretenteds to need a specified challenge.
 149  * This module removes *all* security from the challenge-response system
 150  *
 151  * @return NT_STATUS_UNSUCCESSFUL
 152  **/
 153 static NTSTATUS fixed_challenge_get_challenge(struct auth_method_context *ctx, TALLOC_CTX *mem_ctx, DATA_BLOB *_blob)
 154 {
 155         DATA_BLOB blob;
 156         const char *challenge = "I am a teapot";
 157
 158         blob = data_blob_talloc(mem_ctx, challenge, 8);
 159         NT_STATUS_HAVE_NO_MEMORY(blob.data);
 160
 161         *_blob = blob;
 162         return NT_STATUS_OK;
 163 }
 164
 165 static NTSTATUS fixed_challenge_want_check(struct auth_method_context *ctx,
 166                                            TALLOC_CTX *mem_ctx,
 167                                            const struct auth_usersupplied_info *user_info)
 168 {
 169         /* don't handle any users */
 170         return NT_STATUS_NOT_IMPLEMENTED;
 171 }
 172
 173 static NTSTATUS fixed_challenge_check_password(struct auth_method_context *ctx,
 174                                                TALLOC_CTX *mem_ctx,
 175                                                const struct auth_usersupplied_info *user_info,
 176                                                struct auth_serversupplied_info **_server_info)
 177 {
 178         /* don't handle any users */
 179         return NT_STATUS_NO_SUCH_USER;
 180 }
 181
 182 static const struct auth_operations fixed_challenge_auth_ops = {
 183         .name           = "fixed_challenge",
 184         .get_challenge  = fixed_challenge_get_challenge,
 185         .want_check     = fixed_challenge_want_check,
 186         .check_password = fixed_challenge_check_password
 187 };
 188
 189 _PUBLIC_ NTSTATUS auth_developer_init(void)
 190 {
 191         NTSTATUS ret;
 192
 193         ret = auth_register(&name_to_ntstatus_auth_ops);
 194         if (!NT_STATUS_IS_OK(ret)) {
 195                 DEBUG(0,("Failed to register 'name_to_ntstatus' auth backend!\n"));
 196                 return ret;
 197         }
 198
 199         ret = auth_register(&fixed_challenge_auth_ops);
 200         if (!NT_STATUS_IS_OK(ret)) {
 201                 DEBUG(0,("Failed to register 'fixed_challenge' auth backend!\n"));
 202                 return ret;
 203         }
 204
 205         return ret;
 206 }