source4/auth/ntlm/auth_simple.c

   1 /*
   2    Unix SMB/CIFS implementation.
   3
   4    auth functions
   5
   6    Copyright (C) Simo Sorce 2005
   7    Copyright (C) Andrew Tridgell 2005
   8    Copyright (C) Andrew Bartlett 2005
   9
  10    This program is free software; you can redistribute it and/or modify
  11    it under the terms of the GNU General Public License as published by
  12    the Free Software Foundation; either version 3 of the License, or
  13    (at your option) any later version.
  14
  15    This program is distributed in the hope that it will be useful,
  16    but WITHOUT ANY WARRANTY; without even the implied warranty of
  17    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  18    GNU General Public License for more details.
  19
  20    You should have received a copy of the GNU General Public License
  21    along with this program.  If not, see <http://www.gnu.org/licenses/>.
  22 */
  23
  24 #include "includes.h"
  25 #include "auth/auth.h"
  26 #include "dsdb/samdb/samdb.h"
  27
  28 _PUBLIC_ NTSTATUS authenticate_ldap_simple_bind(TALLOC_CTX *mem_ctx,
  29                                                 struct tevent_context *ev,
  30                                                 struct imessaging_context *msg,
  31                                                 struct loadparm_context *lp_ctx,
  32                                                 struct tsocket_address *remote_address,
  33                                                 struct tsocket_address *local_address,
  34                                                 bool using_tls,
  35                                                 const char *dn,
  36                                                 const char *password,
  37                                                 struct auth_session_info **session_info)
  38 {
  39         struct auth4_context *auth_context;
  40         struct auth_usersupplied_info *user_info;
  41         struct auth_user_info_dc *user_info_dc;
  42         NTSTATUS nt_status;
  43         uint8_t authoritative = 0;
  44         TALLOC_CTX *tmp_ctx = talloc_new(mem_ctx);
  45         const char *nt4_domain;
  46         const char *nt4_username;
  47         uint32_t flags = 0;
  48         const char *transport_protection = AUTHZ_TRANSPORT_PROTECTION_NONE;
  49         if (using_tls) {
  50                 transport_protection = AUTHZ_TRANSPORT_PROTECTION_TLS;
  51         }
  52
  53         if (!tmp_ctx) {
  54                 return NT_STATUS_NO_MEMORY;
  55         }
  56
  57         nt_status = crack_auto_name_to_nt4_name(tmp_ctx, ev, lp_ctx, dn,
  58                                                 &nt4_domain, &nt4_username);
  59
  60         if (!NT_STATUS_IS_OK(nt_status)) {
  61                 talloc_free(tmp_ctx);
  62                 return nt_status;
  63         }
  64
  65         nt_status = auth_context_create(tmp_ctx,
  66                                         ev, msg,
  67                                         lp_ctx,
  68                                         &auth_context);
  69         if (!NT_STATUS_IS_OK(nt_status)) {
  70                 talloc_free(tmp_ctx);
  71                 return nt_status;
  72         }
  73
  74         user_info = talloc_zero(tmp_ctx, struct auth_usersupplied_info);
  75         if (!user_info) {
  76                 talloc_free(tmp_ctx);
  77                 return NT_STATUS_NO_MEMORY;
  78         }
  79
  80         user_info->mapped_state = true;
  81         user_info->client.account_name = dn;
  82         /* No client.domain_name, use account_name instead */
  83         user_info->mapped.account_name = nt4_username;
  84         user_info->mapped.domain_name = nt4_domain;
  85
  86         user_info->workstation_name = NULL;
  87
  88         user_info->remote_host = remote_address;
  89         user_info->local_host = local_address;
  90
  91         user_info->service_description = "LDAP";
  92
  93         if (using_tls) {
  94                 user_info->auth_description = "simple bind";
  95         } else {
  96                 user_info->auth_description = "simple bind/TLS";
  97         }
  98
  99         user_info->password_state = AUTH_PASSWORD_PLAIN;
 100         user_info->password.plaintext = talloc_strdup(user_info, password);
 101
 102         user_info->flags = USER_INFO_CASE_INSENSITIVE_USERNAME |
 103                 USER_INFO_DONT_CHECK_UNIX_ACCOUNT;
 104
 105         user_info->logon_parameters =
 106                 MSV1_0_ALLOW_SERVER_TRUST_ACCOUNT |
 107                 MSV1_0_ALLOW_WORKSTATION_TRUST_ACCOUNT |
 108                 MSV1_0_CLEARTEXT_PASSWORD_ALLOWED |
 109                 MSV1_0_CLEARTEXT_PASSWORD_SUPPLIED;
 110
 111         nt_status = auth_check_password(auth_context, tmp_ctx, user_info,
 112                                         &user_info_dc, &authoritative);
 113         if (!NT_STATUS_IS_OK(nt_status)) {
 114                 talloc_free(tmp_ctx);
 115                 return nt_status;
 116         }
 117
 118         flags = AUTH_SESSION_INFO_DEFAULT_GROUPS;
 119         if (user_info_dc->info->authenticated) {
 120                 flags |= AUTH_SESSION_INFO_AUTHENTICATED;
 121         }
 122         nt_status = auth_context->generate_session_info(auth_context,
 123                                                         tmp_ctx,
 124                                                         user_info_dc,
 125                                                         nt4_username,
 126                                                         flags,
 127                                                         session_info);
 128
 129         if (NT_STATUS_IS_OK(nt_status)) {
 130                 talloc_steal(mem_ctx, *session_info);
 131         }
 132
 133         log_successful_authz_event(auth_context->msg_ctx,
 134                                    auth_context->lp_ctx,
 135                                    remote_address,
 136                                    local_address,
 137                                    "LDAP",
 138                                    "simple bind",
 139                                    transport_protection,
 140                                    *session_info);
 141
 142         talloc_free(tmp_ctx);
 143         return nt_status;
 144 }
 145