source3/smbd/auth_winbind.c

   1 /*
   2    Unix SMB/Netbios implementation.
   3    Version 2.0
   4
   5    Winbind authentication mechnism
   6
   7    Copyright (C) Tim Potter 2000
   8    Copyright (C) Andrew Bartlett 2001
   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 2 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, write to the Free Software
  22    Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
  23 */
  24
  25 #include "includes.h"
  26
  27 /* Prototypes from common.h */
  28
  29 NSS_STATUS winbindd_request(int req_type,
  30                             struct winbindd_request *request,
  31                             struct winbindd_response *response);
  32
  33
  34 /* Authenticate a user with a challenge/response */
  35
  36 static NTSTATUS check_winbind_security(void *my_private_data,
  37                                 const auth_usersupplied_info *user_info,
  38                                 const auth_authsupplied_info *auth_info,
  39                                 auth_serversupplied_info **server_info)
  40 {
  41         struct winbindd_request request;
  42         struct winbindd_response response;
  43         NSS_STATUS result;
  44         struct passwd *pw;
  45         NTSTATUS nt_status;
  46
  47         if (!user_info) {
  48                 return NT_STATUS_LOGON_FAILURE;
  49         }
  50
  51         if (!auth_info) {
  52                 DEBUG(3,("Password for user %s cannot be checked becouse we have no auth_info to get the challange from.\n",
  53                          user_info->internal_username.str));
  54                 return NT_STATUS_LOGON_FAILURE;
  55         }
  56
  57         /* Send off request */
  58
  59         ZERO_STRUCT(request);
  60         ZERO_STRUCT(response);
  61
  62         snprintf(request.data.auth_crap.user, sizeof(request.data.auth_crap.user),
  63                  "%s\\%s", user_info->domain.str, user_info->smb_name.str);
  64
  65         memcpy(request.data.auth_crap.chal, auth_info->challange.data, sizeof(request.data.auth_crap.chal));
  66
  67         request.data.auth_crap.lm_resp_len = MIN(user_info->lm_resp.length,
  68                                                  sizeof(request.data.auth_crap.lm_resp));
  69         request.data.auth_crap.nt_resp_len = MIN(user_info->nt_resp.length,
  70                                                  sizeof(request.data.auth_crap.nt_resp));
  71
  72         memcpy(request.data.auth_crap.lm_resp, user_info->lm_resp.data,
  73                sizeof(request.data.auth_crap.lm_resp_len));
  74         memcpy(request.data.auth_crap.nt_resp, user_info->nt_resp.data,
  75                request.data.auth_crap.lm_resp_len);
  76
  77         result = winbindd_request(WINBINDD_PAM_AUTH_CRAP, &request, &response);
  78
  79         if (result == NSS_STATUS_SUCCESS) {
  80
  81                 pw = Get_Pwnam(user_info->internal_username.str);
  82
  83                 if (pw) {
  84                         if (make_server_info_pw(server_info, pw)) {
  85                                 nt_status = NT_STATUS_OK;
  86                         } else {
  87                                 nt_status = NT_STATUS_NO_MEMORY;
  88                         }
  89                 } else {
  90                         nt_status = NT_STATUS_NO_SUCH_USER;
  91                 }
  92         } else {
  93                 nt_status = NT_STATUS_LOGON_FAILURE;
  94         }
  95
  96         return nt_status;
  97 }
  98
  99 BOOL auth_init_winbind(auth_methods **auth_method)
 100 {
 101         if (!make_auth_methods(auth_method)) {
 102                 return False;
 103         }
 104
 105         (*auth_method)->auth = check_winbind_security;
 106         return True;
 107 }
 108
 109
 110
 111