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 _PUBLIC_ NTSTATUS auth4_developer_init(void);
  28
  29 static NTSTATUS name_to_ntstatus_want_check(struct auth_method_context *ctx,
  30                                             TALLOC_CTX *mem_ctx,
  31                                             const struct auth_usersupplied_info *user_info)
  32 {
  33         return NT_STATUS_OK;
  34 }
  35
  36 /**
  37  * Return an error based on username
  38  *
  39  * This function allows the testing of obsure errors, as well as the generation
  40  * of NT_STATUS -> DOS error mapping tables.
  41  *
  42  * This module is of no value to end-users.
  43  *
  44  * The password is ignored.
  45  *
  46  * @return An NTSTATUS value based on the username
  47  **/
  48
  49 static NTSTATUS name_to_ntstatus_check_password(struct auth_method_context *ctx,
  50                                                 TALLOC_CTX *mem_ctx,
  51                                                 const struct auth_usersupplied_info *user_info,
  52                                                 struct auth_user_info_dc **_user_info_dc)
  53 {
  54         NTSTATUS nt_status;
  55         struct auth_user_info_dc *user_info_dc;
  56         struct auth_user_info *info;
  57         uint32_t error_num;
  58         const char *user;
  59
  60         user = user_info->client.account_name;
  61
  62         if (strncasecmp("NT_STATUS", user, strlen("NT_STATUS")) == 0) {
  63                 nt_status = nt_status_string_to_code(user);
  64         } else {
  65                 error_num = strtoul(user, NULL, 16);
  66                 DEBUG(5,("name_to_ntstatus_check_password: Error for user %s was 0x%08X\n", user, error_num));
  67                 nt_status = NT_STATUS(error_num);
  68         }
  69         NT_STATUS_NOT_OK_RETURN(nt_status);
  70
  71         user_info_dc = talloc(mem_ctx, struct auth_user_info_dc);
  72         NT_STATUS_HAVE_NO_MEMORY(user_info_dc);
  73
  74         /* This returns a pointer to a struct dom_sid, which is the
  75          * same as a 1 element list of struct dom_sid */
  76         user_info_dc->num_sids = 1;
  77         user_info_dc->sids = dom_sid_parse_talloc(user_info_dc, SID_NT_ANONYMOUS);
  78         NT_STATUS_HAVE_NO_MEMORY(user_info_dc->sids);
  79
  80         /* annoying, but the Anonymous really does have a session key,
  81            and it is all zeros! */
  82         user_info_dc->user_session_key = data_blob_talloc(user_info_dc, NULL, 16);
  83         NT_STATUS_HAVE_NO_MEMORY(user_info_dc->user_session_key.data);
  84
  85         user_info_dc->lm_session_key = data_blob_talloc(user_info_dc, NULL, 16);
  86         NT_STATUS_HAVE_NO_MEMORY(user_info_dc->lm_session_key.data);
  87
  88         data_blob_clear(&user_info_dc->user_session_key);
  89         data_blob_clear(&user_info_dc->lm_session_key);
  90
  91         user_info_dc->info = info = talloc_zero(user_info_dc, struct auth_user_info);
  92         NT_STATUS_HAVE_NO_MEMORY(user_info_dc->info);
  93
  94         info->account_name = talloc_asprintf(user_info_dc, "NAME TO NTSTATUS %s ANONYMOUS LOGON", user);
  95         NT_STATUS_HAVE_NO_MEMORY(info->account_name);
  96
  97         info->domain_name = talloc_strdup(user_info_dc, "NT AUTHORITY");
  98         NT_STATUS_HAVE_NO_MEMORY(info->domain_name);
  99
 100         info->full_name = talloc_asprintf(user_info_dc, "NAME TO NTSTATUS %s Anonymous Logon", user);
 101         NT_STATUS_HAVE_NO_MEMORY(info->full_name);
 102
 103         info->logon_script = talloc_strdup(user_info_dc, "");
 104         NT_STATUS_HAVE_NO_MEMORY(info->logon_script);
 105
 106         info->profile_path = talloc_strdup(user_info_dc, "");
 107         NT_STATUS_HAVE_NO_MEMORY(info->profile_path);
 108
 109         info->home_directory = talloc_strdup(user_info_dc, "");
 110         NT_STATUS_HAVE_NO_MEMORY(info->home_directory);
 111
 112         info->home_drive = talloc_strdup(user_info_dc, "");
 113         NT_STATUS_HAVE_NO_MEMORY(info->home_drive);
 114
 115         info->last_logon = 0;
 116         info->last_logoff = 0;
 117         info->acct_expiry = 0;
 118         info->last_password_change = 0;
 119         info->allow_password_change = 0;
 120         info->force_password_change = 0;
 121
 122         info->logon_count = 0;
 123         info->bad_password_count = 0;
 124
 125         info->acct_flags = ACB_NORMAL;
 126
 127         info->authenticated = true;
 128
 129         *_user_info_dc = user_info_dc;
 130
 131         return nt_status;
 132 }
 133
 134 static const struct auth_operations name_to_ntstatus_auth_ops = {
 135         .name           = "name_to_ntstatus",
 136         .get_challenge  = auth_get_challenge_not_implemented,
 137         .want_check     = name_to_ntstatus_want_check,
 138         .check_password = name_to_ntstatus_check_password
 139 };
 140
 141 /**
 142  * Return a 'fixed' challenge instead of a variable one.
 143  *
 144  * The idea of this function is to make packet snifs consistant
 145  * with a fixed challenge, so as to aid debugging.
 146  *
 147  * This module is of no value to end-users.
 148  *
 149  * This module does not actually authenticate the user, but
 150  * just pretenteds to need a specified challenge.
 151  * This module removes *all* security from the challenge-response system
 152  *
 153  * @return NT_STATUS_UNSUCCESSFUL
 154  **/
 155 static NTSTATUS fixed_challenge_get_challenge(struct auth_method_context *ctx, TALLOC_CTX *mem_ctx, uint8_t chal[8])
 156 {
 157         const char *challenge = "I am a teapot";
 158
 159         memcpy(chal, challenge, 8);
 160
 161         return NT_STATUS_OK;
 162 }
 163
 164 static NTSTATUS fixed_challenge_want_check(struct auth_method_context *ctx,
 165                                            TALLOC_CTX *mem_ctx,
 166                                            const struct auth_usersupplied_info *user_info)
 167 {
 168         /* don't handle any users */
 169         return NT_STATUS_NOT_IMPLEMENTED;
 170 }
 171
 172 static NTSTATUS fixed_challenge_check_password(struct auth_method_context *ctx,
 173                                                TALLOC_CTX *mem_ctx,
 174                                                const struct auth_usersupplied_info *user_info,
 175                                                struct auth_user_info_dc **_user_info_dc)
 176 {
 177         /* don't handle any users */
 178         return NT_STATUS_NO_SUCH_USER;
 179 }
 180
 181 static const struct auth_operations fixed_challenge_auth_ops = {
 182         .name           = "fixed_challenge",
 183         .get_challenge  = fixed_challenge_get_challenge,
 184         .want_check     = fixed_challenge_want_check,
 185         .check_password = fixed_challenge_check_password
 186 };
 187
 188 _PUBLIC_ NTSTATUS auth4_developer_init(void)
 189 {
 190         NTSTATUS ret;
 191
 192         ret = auth_register(&name_to_ntstatus_auth_ops);
 193         if (!NT_STATUS_IS_OK(ret)) {
 194                 DEBUG(0,("Failed to register 'name_to_ntstatus' auth backend!\n"));
 195                 return ret;
 196         }
 197
 198         ret = auth_register(&fixed_challenge_auth_ops);
 199         if (!NT_STATUS_IS_OK(ret)) {
 200                 DEBUG(0,("Failed to register 'fixed_challenge' auth backend!\n"));
 201                 return ret;
 202         }
 203
 204         return ret;
 205 }