source3/auth/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(const struct auth_context *auth_context,
  37                                        void *my_private_data,
  38                                        TALLOC_CTX *mem_ctx,
  39                                        const auth_usersupplied_info *user_info,
  40                                        auth_serversupplied_info **server_info)
  41 {
  42         struct winbindd_request request;
  43         struct winbindd_response response;
  44         NSS_STATUS result;
  45         struct passwd *pw;
  46         NTSTATUS nt_status;
  47
  48         if (!user_info) {
  49                 return NT_STATUS_UNSUCCESSFUL;
  50         }
  51
  52         if (!auth_context) {
  53                 DEBUG(3,("Password for user %s cannot be checked because we have no auth_info to get the challenge from.\n",
  54                          user_info->internal_username.str));
  55                 return NT_STATUS_UNSUCCESSFUL;
  56         }
  57
  58         /* Send off request */
  59
  60         ZERO_STRUCT(request);
  61         ZERO_STRUCT(response);
  62
  63         snprintf(request.data.auth_crap.user, sizeof(request.data.auth_crap.user),
  64                  "%s\\%s", user_info->domain.str, user_info->smb_name.str);
  65
  66         memcpy(request.data.auth_crap.chal, auth_context->challenge.data, sizeof(request.data.auth_crap.chal));
  67
  68         request.data.auth_crap.lm_resp_len = MIN(user_info->lm_resp.length,
  69                                                  sizeof(request.data.auth_crap.lm_resp));
  70         request.data.auth_crap.nt_resp_len = MIN(user_info->nt_resp.length,
  71                                                  sizeof(request.data.auth_crap.nt_resp));
  72
  73         memcpy(request.data.auth_crap.lm_resp, user_info->lm_resp.data,
  74                sizeof(request.data.auth_crap.lm_resp_len));
  75         memcpy(request.data.auth_crap.nt_resp, user_info->nt_resp.data,
  76                request.data.auth_crap.lm_resp_len);
  77
  78         result = winbindd_request(WINBINDD_PAM_AUTH_CRAP, &request, &response);
  79
  80         if (result == NSS_STATUS_SUCCESS) {
  81
  82                 pw = Get_Pwnam(user_info->internal_username.str);
  83
  84                 if (pw) {
  85                         if (make_server_info_pw(server_info, pw)) {
  86                                 nt_status = NT_STATUS_OK;
  87                         } else {
  88                                 nt_status = NT_STATUS_NO_MEMORY;
  89                         }
  90                 } else {
  91                         nt_status = NT_STATUS_NO_SUCH_USER;
  92                 }
  93         } else {
  94                 nt_status = NT_STATUS_LOGON_FAILURE;
  95         }
  96
  97         return nt_status;
  98 }
  99
 100 /* module initialisation */
 101 BOOL auth_init_winbind(struct auth_context *auth_context, auth_methods **auth_method)
 102 {
 103         if (!make_auth_methods(auth_context, auth_method)) {
 104                 return False;
 105         }
 106
 107         (*auth_method)->auth = check_winbind_security;
 108         return True;
 109 }