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 #undef DBGC_CLASS
  27 #define DBGC_CLASS DBGC_AUTH
  28
  29 /* Prototypes from common.h */
  30
  31 NSS_STATUS winbindd_request(int req_type,
  32                             struct winbindd_request *request,
  33                             struct winbindd_response *response);
  34
  35
  36 /* Authenticate a user with a challenge/response */
  37
  38 static NTSTATUS check_winbind_security(const struct auth_context *auth_context,
  39                                        void *my_private_data,
  40                                        TALLOC_CTX *mem_ctx,
  41                                        const auth_usersupplied_info *user_info,
  42                                        auth_serversupplied_info **server_info)
  43 {
  44         struct winbindd_request request;
  45         struct winbindd_response response;
  46         NSS_STATUS result;
  47         struct passwd *pw;
  48         NTSTATUS nt_status;
  49
  50         if (!user_info) {
  51                 return NT_STATUS_UNSUCCESSFUL;
  52         }
  53
  54         if (!auth_context) {
  55                 DEBUG(3,("Password for user %s cannot be checked because we have no auth_info to get the challenge from.\n",
  56                          user_info->internal_username.str));
  57                 return NT_STATUS_UNSUCCESSFUL;
  58         }
  59
  60         /* Send off request */
  61
  62         ZERO_STRUCT(request);
  63         ZERO_STRUCT(response);
  64
  65         snprintf(request.data.auth_crap.user, sizeof(request.data.auth_crap.user),
  66                  "%s\\%s", user_info->domain.str, user_info->smb_name.str);
  67
  68         fstrcpy(request.data.auth_crap.user, user_info->smb_name.str);
  69         fstrcpy(request.data.auth_crap.domain, user_info->domain.str);
  70
  71         memcpy(request.data.auth_crap.chal, auth_context->challenge.data, sizeof(request.data.auth_crap.chal));
  72
  73         request.data.auth_crap.lm_resp_len = MIN(user_info->lm_resp.length,
  74                                                  sizeof(request.data.auth_crap.lm_resp));
  75         request.data.auth_crap.nt_resp_len = MIN(user_info->nt_resp.length,
  76                                                  sizeof(request.data.auth_crap.nt_resp));
  77
  78         memcpy(request.data.auth_crap.lm_resp, user_info->lm_resp.data,
  79                sizeof(request.data.auth_crap.lm_resp_len));
  80         memcpy(request.data.auth_crap.nt_resp, user_info->nt_resp.data,
  81                request.data.auth_crap.lm_resp_len);
  82
  83         result = winbindd_request(WINBINDD_PAM_AUTH_CRAP, &request, &response);
  84
  85         if (result == NSS_STATUS_SUCCESS) {
  86
  87                 pw = Get_Pwnam(user_info->internal_username.str);
  88
  89                 if (pw) {
  90                         if (make_server_info_pw(server_info, pw)) {
  91                                 nt_status = NT_STATUS_OK;
  92                         } else {
  93                                 nt_status = NT_STATUS_NO_MEMORY;
  94                         }
  95                 } else {
  96                         nt_status = NT_STATUS_NO_SUCH_USER;
  97                 }
  98         } else {
  99                 nt_status = NT_STATUS_LOGON_FAILURE;
 100         }
 101
 102         return nt_status;
 103 }
 104
 105 /* module initialisation */
 106 NTSTATUS auth_init_winbind(struct auth_context *auth_context, const char *param, auth_methods **auth_method)
 107 {
 108         if (!make_auth_methods(auth_context, auth_method)) {
 109                 return NT_STATUS_NO_MEMORY;
 110         }
 111
 112         (*auth_method)->auth = check_winbind_security;
 113         return NT_STATUS_OK;
 114 }