source4/auth/ntlm/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 "auth/ntlm/auth_proto.h"
  25 #include "libcli/security/security.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_user_info_dc **_user_info_dc)
  51 {
  52         NTSTATUS nt_status;
  53         struct auth_user_info_dc *user_info_dc;
  54         struct auth_user_info *info;
  55         uint32_t error_num;
  56         const char *user;
  57
  58         user = user_info->client.account_name;
  59
  60         if (strncasecmp("NT_STATUS", user, strlen("NT_STATUS")) == 0) {
  61                 nt_status = nt_status_string_to_code(user);
  62         } else {
  63                 error_num = strtoul(user, NULL, 16);
  64                 DEBUG(5,("name_to_ntstatus_check_password: Error for user %s was 0x%08X\n", user, error_num));
  65                 nt_status = NT_STATUS(error_num);
  66         }
  67         NT_STATUS_NOT_OK_RETURN(nt_status);
  68
  69         user_info_dc = talloc(mem_ctx, struct auth_user_info_dc);
  70         NT_STATUS_HAVE_NO_MEMORY(user_info_dc);
  71
  72         /* This returns a pointer to a struct dom_sid, which is the
  73          * same as a 1 element list of struct dom_sid */
  74         user_info_dc->num_sids = 1;
  75         user_info_dc->sids = dom_sid_parse_talloc(user_info_dc, SID_NT_ANONYMOUS);
  76         NT_STATUS_HAVE_NO_MEMORY(user_info_dc->sids);
  77
  78         /* annoying, but the Anonymous really does have a session key,
  79            and it is all zeros! */
  80         user_info_dc->user_session_key = data_blob_talloc(user_info_dc, NULL, 16);
  81         NT_STATUS_HAVE_NO_MEMORY(user_info_dc->user_session_key.data);
  82
  83         user_info_dc->lm_session_key = data_blob_talloc(user_info_dc, NULL, 16);
  84         NT_STATUS_HAVE_NO_MEMORY(user_info_dc->lm_session_key.data);
  85
  86         data_blob_clear(&user_info_dc->user_session_key);
  87         data_blob_clear(&user_info_dc->lm_session_key);
  88
  89         user_info_dc->info = info = talloc_zero(user_info_dc, struct auth_user_info);
  90         NT_STATUS_HAVE_NO_MEMORY(user_info_dc->info);
  91
  92         info->account_name = talloc_asprintf(user_info_dc, "NAME TO NTSTATUS %s ANONYMOUS LOGON", user);
  93         NT_STATUS_HAVE_NO_MEMORY(info->account_name);
  94
  95         info->domain_name = talloc_strdup(user_info_dc, "NT AUTHORITY");
  96         NT_STATUS_HAVE_NO_MEMORY(info->domain_name);
  97
  98         info->full_name = talloc_asprintf(user_info_dc, "NAME TO NTSTATUS %s Anonymous Logon", user);
  99         NT_STATUS_HAVE_NO_MEMORY(info->full_name);
 100
 101         info->logon_script = talloc_strdup(user_info_dc, "");
 102         NT_STATUS_HAVE_NO_MEMORY(info->logon_script);
 103
 104         info->profile_path = talloc_strdup(user_info_dc, "");
 105         NT_STATUS_HAVE_NO_MEMORY(info->profile_path);
 106
 107         info->home_directory = talloc_strdup(user_info_dc, "");
 108         NT_STATUS_HAVE_NO_MEMORY(info->home_directory);
 109
 110         info->home_drive = talloc_strdup(user_info_dc, "");
 111         NT_STATUS_HAVE_NO_MEMORY(info->home_drive);
 112
 113         info->last_logon = 0;
 114         info->last_logoff = 0;
 115         info->acct_expiry = 0;
 116         info->last_password_change = 0;
 117         info->allow_password_change = 0;
 118         info->force_password_change = 0;
 119
 120         info->logon_count = 0;
 121         info->bad_password_count = 0;
 122
 123         info->acct_flags = ACB_NORMAL;
 124
 125         info->authenticated = true;
 126
 127         *_user_info_dc = user_info_dc;
 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, uint8_t chal[8])
 154 {
 155         const char *challenge = "I am a teapot";
 156
 157         memcpy(chal, challenge, 8);
 158
 159         return NT_STATUS_OK;
 160 }
 161
 162 static NTSTATUS fixed_challenge_want_check(struct auth_method_context *ctx,
 163                                            TALLOC_CTX *mem_ctx,
 164                                            const struct auth_usersupplied_info *user_info)
 165 {
 166         /* don't handle any users */
 167         return NT_STATUS_NOT_IMPLEMENTED;
 168 }
 169
 170 static NTSTATUS fixed_challenge_check_password(struct auth_method_context *ctx,
 171                                                TALLOC_CTX *mem_ctx,
 172                                                const struct auth_usersupplied_info *user_info,
 173                                                struct auth_user_info_dc **_user_info_dc)
 174 {
 175         /* don't handle any users */
 176         return NT_STATUS_NO_SUCH_USER;
 177 }
 178
 179 static const struct auth_operations fixed_challenge_auth_ops = {
 180         .name           = "fixed_challenge",
 181         .get_challenge  = fixed_challenge_get_challenge,
 182         .want_check     = fixed_challenge_want_check,
 183         .check_password = fixed_challenge_check_password
 184 };
 185
 186 _PUBLIC_ NTSTATUS auth_developer_init(void)
 187 {
 188         NTSTATUS ret;
 189
 190         ret = auth_register(&name_to_ntstatus_auth_ops);
 191         if (!NT_STATUS_IS_OK(ret)) {
 192                 DEBUG(0,("Failed to register 'name_to_ntstatus' auth backend!\n"));
 193                 return ret;
 194         }
 195
 196         ret = auth_register(&fixed_challenge_auth_ops);
 197         if (!NT_STATUS_IS_OK(ret)) {
 198                 DEBUG(0,("Failed to register 'fixed_challenge' auth backend!\n"));
 199                 return ret;
 200         }
 201
 202         return ret;
 203 }