source3/auth/auth_winbind.c

   1 /*
   2    Unix SMB/CIFS implementation.
   3
   4    Winbind authentication mechnism
   5
   6    Copyright (C) Tim Potter 2000
   7    Copyright (C) Andrew Bartlett 2001
   8
   9    This program is free software; you can redistribute it and/or modify
  10    it under the terms of the GNU General Public License as published by
  11    the Free Software Foundation; either version 2 of the License, or
  12    (at your option) any later version.
  13
  14    This program is distributed in the hope that it will be useful,
  15    but WITHOUT ANY WARRANTY; without even the implied warranty of
  16    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  17    GNU General Public License for more details.
  18
  19    You should have received a copy of the GNU General Public License
  20    along with this program; if not, write to the Free Software
  21    Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
  22 */
  23
  24 #include "includes.h"
  25
  26 /* Prototypes from common.h */
  27
  28 NSS_STATUS winbindd_request(int req_type,
  29                             struct winbindd_request *request,
  30                             struct winbindd_response *response);
  31
  32
  33 /* Authenticate a user with a challenge/response */
  34
  35 static NTSTATUS check_winbind_security(const struct auth_context *auth_context,
  36                                        void *my_private_data,
  37                                        TALLOC_CTX *mem_ctx,
  38                                        const auth_usersupplied_info *user_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_UNSUCCESSFUL;
  49         }
  50
  51         if (!auth_context) {
  52                 DEBUG(3,("Password for user %s cannot be checked because we have no auth_info to get the challenge from.\n",
  53                          user_info->internal_username.str));
  54                 return NT_STATUS_UNSUCCESSFUL;
  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         fstrcpy(request.data.auth_crap.user, user_info->smb_name.str);
  66         fstrcpy(request.data.auth_crap.domain, user_info->domain.str);
  67
  68         memcpy(request.data.auth_crap.chal, auth_context->challenge.data, sizeof(request.data.auth_crap.chal));
  69
  70         request.data.auth_crap.lm_resp_len = MIN(user_info->lm_resp.length,
  71                                                  sizeof(request.data.auth_crap.lm_resp));
  72         request.data.auth_crap.nt_resp_len = MIN(user_info->nt_resp.length,
  73                                                  sizeof(request.data.auth_crap.nt_resp));
  74
  75         memcpy(request.data.auth_crap.lm_resp, user_info->lm_resp.data,
  76                sizeof(request.data.auth_crap.lm_resp_len));
  77         memcpy(request.data.auth_crap.nt_resp, user_info->nt_resp.data,
  78                request.data.auth_crap.lm_resp_len);
  79
  80         result = winbindd_request(WINBINDD_PAM_AUTH_CRAP, &request, &response);
  81
  82         if (result == NSS_STATUS_SUCCESS) {
  83
  84                 pw = Get_Pwnam(user_info->internal_username.str);
  85
  86                 if (pw) {
  87                         if (make_server_info_pw(server_info, pw)) {
  88                                 nt_status = NT_STATUS_OK;
  89                         } else {
  90                                 nt_status = NT_STATUS_NO_MEMORY;
  91                         }
  92                 } else {
  93                         nt_status = NT_STATUS_NO_SUCH_USER;
  94                 }
  95         } else {
  96                 nt_status = NT_STATUS_LOGON_FAILURE;
  97         }
  98
  99         return nt_status;
 100 }
 101
 102 /* module initialisation */
 103 BOOL auth_init_winbind(struct auth_context *auth_context, auth_methods **auth_method)
 104 {
 105         if (!make_auth_methods(auth_context, auth_method)) {
 106                 return False;
 107         }
 108
 109         (*auth_method)->auth = check_winbind_security;
 110         return True;
 111 }