2 Unix SMB/CIFS implementation.
3 Password and authentication handling
4 Copyright (C) Andrew Bartlett 2001-2002
6 This program is free software; you can redistribute it and/or modify
7 it under the terms of the GNU General Public License as published by
8 the Free Software Foundation; either version 2 of the License, or
9 (at your option) any later version.
11 This program is distributed in the hope that it will be useful,
12 but WITHOUT ANY WARRANTY; without even the implied warranty of
13 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
14 GNU General Public License for more details.
16 You should have received a copy of the GNU General Public License
17 along with this program; if not, write to the Free Software
18 Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
23 extern struct auth_context *negprot_global_auth_context;
24 extern BOOL global_encrypted_passwords_negotiated;
27 #define DBGC_CLASS DBGC_AUTH
29 /****************************************************************************
30 COMPATIBILITY INTERFACES:
31 ***************************************************************************/
33 /****************************************************************************
34 check if a username/password is OK assuming the password is a 24 byte
36 return True if the password is correct, False otherwise
37 ****************************************************************************/
39 NTSTATUS check_plaintext_password(const char *smb_name, DATA_BLOB plaintext_password, auth_serversupplied_info **server_info)
41 struct auth_context *plaintext_auth_context = NULL;
42 auth_usersupplied_info *user_info = NULL;
45 if (!NT_STATUS_IS_OK(nt_status = make_auth_context_subsystem(&plaintext_auth_context))) {
49 chal = plaintext_auth_context->get_ntlm_challenge(plaintext_auth_context);
51 if (!make_user_info_for_reply(&user_info,
52 smb_name, lp_workgroup(), chal,
53 plaintext_password)) {
54 return NT_STATUS_NO_MEMORY;
57 nt_status = plaintext_auth_context->check_ntlm_password(plaintext_auth_context,
58 user_info, server_info);
60 (plaintext_auth_context->free)(&plaintext_auth_context);
61 free_user_info(&user_info);
65 static NTSTATUS pass_check_smb(const char *smb_name,
69 DATA_BLOB plaintext_password,
74 auth_serversupplied_info *server_info = NULL;
76 auth_usersupplied_info *user_info = NULL;
77 make_user_info_for_reply_enc(&user_info, smb_name,
81 nt_status = negprot_global_auth_context->check_ntlm_password(negprot_global_auth_context,
82 user_info, &server_info);
83 free_user_info(&user_info);
85 nt_status = check_plaintext_password(smb_name, plaintext_password, &server_info);
87 free_server_info(&server_info);
91 /****************************************************************************
92 check if a username/password pair is ok via the auth subsystem.
93 return True if the password is correct, False otherwise
94 ****************************************************************************/
95 BOOL password_ok(char *smb_name, DATA_BLOB password_blob)
98 DATA_BLOB null_password = data_blob(NULL, 0);
99 BOOL encrypted = (global_encrypted_passwords_negotiated && password_blob.length == 24);
103 * The password could be either NTLM or plain LM. Try NTLM first,
104 * but fall-through as required.
105 * NTLMv2 makes no sense here.
107 if (NT_STATUS_IS_OK(pass_check_smb(smb_name, lp_workgroup(), null_password, password_blob, null_password, encrypted))) {
111 if (NT_STATUS_IS_OK(pass_check_smb(smb_name, lp_workgroup(), password_blob, null_password, null_password, encrypted))) {
115 if (NT_STATUS_IS_OK(pass_check_smb(smb_name, lp_workgroup(), null_password, null_password, password_blob, encrypted))) {