2 Unix SMB/Netbios implementation.
4 Password and authentication handling
5 Copyright (C) Andrew Tridgell 1992-2000
6 Copyright (C) Luke Kenneth Casson Leighton 1996-2000
7 Copyright (C) Andrew Bartlett 2001
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.
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.
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.
26 /****************************************************************************
27 Check user is in correct domain if required
28 ****************************************************************************/
30 static BOOL check_domain_match(char *user, char *domain)
33 * If we aren't serving to trusted domains, we must make sure that
34 * the validation request comes from an account in the same domain
38 if (!lp_allow_trusted_domains() &&
39 !strequal(lp_workgroup(), domain) ) {
40 DEBUG(1, ("check_domain_match: Attempt to connect as user %s from domain %s denied.\n", user, domain));
47 /****************************************************************************
48 Check a users password, as given in the user-info struct and return various
49 interesting details in the server_info struct.
51 This functions does NOT need to be in a become_root()/unbecome_root() pair
52 as it makes the calls itself when needed.
54 The return value takes precedence over the contents of the server_info
55 struct. When the return is other than NT_STATUS_NOPROBLEMO the contents
56 of that structure is undefined.
58 ****************************************************************************/
60 NTSTATUS check_password(const auth_usersupplied_info *user_info,
61 auth_serversupplied_info **server_info)
64 NTSTATUS nt_status = NT_STATUS_LOGON_FAILURE;
65 BOOL done_pam = False;
66 const char *pdb_username;
68 DEBUG(3, ("check_password: Checking password for unmapped user [%s]\\[%s]@[%s] with the new password interface\n",
69 user_info->client_domain.str, user_info->smb_name.str, user_info->wksta_name.str));
71 DEBUG(3, ("check_password: mapped user is: [%s]\\[%s]@[%s]\n",
72 user_info->domain.str, user_info->internal_username.str, user_info->wksta_name.str));
74 if (!NT_STATUS_IS_OK(nt_status)) {
75 nt_status = check_guest_security(user_info, server_info);
76 if (NT_STATUS_IS_OK(nt_status)) {
77 DEBUG(5, ("check_password: checking guest-account for user [%s] suceeded\n", user_info->smb_name.str));
79 DEBUG(10, ("check_password: checking gusst-account for user [%s] FAILED with error %s\n", user_info->smb_name.str, get_nt_error_msg(nt_status)));
84 /* This needs to be sorted: If it doesn't match, what should we do? */
85 if (!check_domain_match(user_info->smb_name.str, user_info->domain.str)) {
86 return NT_STATUS_LOGON_FAILURE;
89 if (!NT_STATUS_IS_OK(nt_status)) {
90 nt_status = check_rhosts_security(user_info, server_info);
91 if (NT_STATUS_IS_OK(nt_status)) {
92 DEBUG(3, ("check_password: Password (rhosts) for user [%s] suceeded\n", user_info->smb_name.str));
94 DEBUG(10, ("check_password: Password (rhosts) for user [%s] FAILED with error %s\n", user_info->smb_name.str, get_nt_error_msg(nt_status)));
99 if ((lp_security() == SEC_DOMAIN) && !NT_STATUS_IS_OK(nt_status)) {
100 nt_status = check_domain_security(user_info, server_info);
101 if (NT_STATUS_IS_OK(nt_status)) {
102 DEBUG(7, ("check_password: Password (domain) for user [%s] suceeded\n", user_info->smb_name.str));
104 DEBUG(5, ("check_password: Password (domain) for user [%s] FAILED with error %s\n", user_info->smb_name.str, get_nt_error_msg(nt_status)));
109 if ((lp_security() == SEC_SERVER) && !NT_STATUS_IS_OK(nt_status)) {
110 nt_status = check_server_security(user_info, server_info);
111 if (NT_STATUS_IS_OK(nt_status)) {
112 DEBUG(7, ("check_password: Password (server) for user [%s] suceeded\n", user_info->smb_name.str));
114 DEBUG(5, ("check_password: Password (server) for user [%s] FAILED with error %s\n", user_info->smb_name.str, get_nt_error_msg(nt_status)));
119 if (lp_security() >= SEC_SERVER) {
120 smb_user_control(user_info, *server_info, nt_status);
123 if (!NT_STATUS_IS_OK(nt_status)) {
124 if (user_info->encrypted || lp_plaintext_to_smbpasswd()) {
125 nt_status = check_smbpasswd_security(user_info, server_info);
127 nt_status = check_unix_security(user_info, server_info);
131 if (NT_STATUS_IS_OK(nt_status)) {
132 DEBUG(7, ("check_password: Password (unix/smbpasswd) for user [%s] suceeded\n", user_info->smb_name.str));
134 DEBUG(5, ("check_password: Password (unix/smbpasswd) for user [%s] FAILED with error %s\n", user_info->smb_name.str, get_nt_error_msg(nt_status)));
139 if (NT_STATUS_IS_OK(nt_status)) {
140 pdb_username = pdb_get_username((*server_info)->sam_account);
141 if (!done_pam && !(*server_info)->guest) {
142 /* We might not be root if we are an RPC call */
144 nt_status = smb_pam_accountcheck(pdb_username);
147 if (NT_STATUS_IS_OK(nt_status)) {
148 DEBUG(5, ("check_password: PAM Account for user [%s] suceeded\n", pdb_username));
150 DEBUG(3, ("check_password: PAM Account for user [%s] FAILED with error %s\n", pdb_username, get_nt_error_msg(nt_status)));
155 if (NT_STATUS_IS_OK(nt_status)) {
156 DEBUG(3, ("check_password: %sauthenticaion for user [%s] -> [%s] -> [%s] suceeded\n",
157 (*server_info)->guest ? "guest " : "",
158 user_info->smb_name.str,
159 user_info->internal_username.str,
162 DEBUG(3, ("check_password: Authenticaion for user [%s] -> [%s] FAILED with error %s\n", user_info->smb_name.str, user_info->internal_username.str, get_nt_error_msg(nt_status)));
163 ZERO_STRUCTP(server_info);
170 /****************************************************************************
171 Squash an NT_STATUS return in line with requirements for unauthenticated
172 connections. (session setups in particular)
173 ****************************************************************************/
175 NTSTATUS nt_status_squash(NTSTATUS nt_status)
177 if NT_STATUS_IS_OK(nt_status) {
179 } else if NT_STATUS_EQUAL(nt_status, NT_STATUS_NO_SUCH_USER) {
180 /* Match WinXP and don't give the game away */
181 return NT_STATUS_LOGON_FAILURE;
183 } else if NT_STATUS_EQUAL(nt_status, NT_STATUS_WRONG_PASSWORD) {
184 /* Match WinXP and don't give the game away */
185 return NT_STATUS_LOGON_FAILURE;
193 /****************************************************************************
194 COMPATABILITY INTERFACES:
195 ***************************************************************************/
197 /****************************************************************************
198 check if a username/password is OK assuming the password is a 24 byte
200 return True if the password is correct, False otherwise
201 ****************************************************************************/
203 static NTSTATUS pass_check_smb(char *smb_name,
207 DATA_BLOB plaintext_password,
212 auth_usersupplied_info *user_info = NULL;
213 auth_serversupplied_info *server_info = NULL;
215 make_user_info_for_reply(&user_info, smb_name,
222 nt_status = check_password(user_info, &server_info);
223 free_user_info(&user_info);
224 free_server_info(&server_info);
228 /****************************************************************************
229 check if a username/password pair is OK either via the system password
230 database or the encrypted SMB password database
231 return True if the password is correct, False otherwise
232 ****************************************************************************/
233 BOOL password_ok(char *smb_name, DATA_BLOB password_blob)
236 DATA_BLOB null_password = data_blob(NULL, 0);
237 extern BOOL global_encrypted_passwords_negotiated;
239 if (global_encrypted_passwords_negotiated) {
241 * The password could be either NTLM or plain LM. Try NTLM first,
242 * but fall-through as required.
243 * NTLMv2 makes no sense here.
245 if (NT_STATUS_IS_OK(pass_check_smb(smb_name, lp_workgroup(), null_password, password_blob, null_password, global_encrypted_passwords_negotiated))) {
249 if (NT_STATUS_IS_OK(pass_check_smb(smb_name, lp_workgroup(), password_blob, null_password, null_password, global_encrypted_passwords_negotiated))) {
253 if (NT_STATUS_IS_OK(pass_check_smb(smb_name, lp_workgroup(), null_password, null_password, password_blob, global_encrypted_passwords_negotiated))) {