2d8e5066a22fb5958c1f1bd3fc691d78336e7c82
[kai/samba.git] / 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         fstrcpy(request.data.auth_crap.user, user_info->smb_name.str);
67         fstrcpy(request.data.auth_crap.domain, user_info->domain.str);
68
69         memcpy(request.data.auth_crap.chal, auth_context->challenge.data, sizeof(request.data.auth_crap.chal));
70         
71         request.data.auth_crap.lm_resp_len = MIN(user_info->lm_resp.length, 
72                                                  sizeof(request.data.auth_crap.lm_resp));
73         request.data.auth_crap.nt_resp_len = MIN(user_info->nt_resp.length, 
74                                                  sizeof(request.data.auth_crap.nt_resp));
75         
76         memcpy(request.data.auth_crap.lm_resp, user_info->lm_resp.data, 
77                sizeof(request.data.auth_crap.lm_resp_len));
78         memcpy(request.data.auth_crap.nt_resp, user_info->nt_resp.data, 
79                request.data.auth_crap.lm_resp_len);
80         
81         result = winbindd_request(WINBINDD_PAM_AUTH_CRAP, &request, &response);
82
83         if (result == NSS_STATUS_SUCCESS) {
84                 
85                 pw = Get_Pwnam(user_info->internal_username.str);
86                 
87                 if (pw) {                       
88                         if (make_server_info_pw(server_info, pw)) {
89                                 nt_status = NT_STATUS_OK;
90                         } else {
91                                 nt_status = NT_STATUS_NO_MEMORY;
92                         }
93                 } else {
94                         nt_status = NT_STATUS_NO_SUCH_USER;
95                 }
96         } else {
97                 nt_status = NT_STATUS_LOGON_FAILURE;
98         }
99
100         return nt_status;
101 }
102
103 /* module initialisation */
104 BOOL auth_init_winbind(struct auth_context *auth_context, auth_methods **auth_method) 
105 {
106         if (!make_auth_methods(auth_context, auth_method)) {
107                 return False;
108         }
109
110         (*auth_method)->auth = check_winbind_security;
111         return True;
112 }