source: vendor/current/source4/kdc/kpasswd_glue.c

Last change on this file was 988, checked in by Silvan Scherrer, 9 years ago

Samba Server: update vendor to version 4.4.3
File size: 3.6 KB
Line 
1/*
2 Unix SMB/CIFS implementation.
3
4 kpasswd Server implementation
5
6 Copyright (C) Andrew Bartlett <abartlet@samba.org> 2005
7 Copyright (C) Andrew Tridgell 2005
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 3 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, see <http://www.gnu.org/licenses/>.
21*/
22
23#include "includes.h"
24#include "dsdb/samdb/samdb.h"
25#include "../lib/util/util_ldb.h"
26#include "libcli/security/security.h"
27#include "dsdb/common/util.h"
28#include "auth/auth.h"
29#include "kdc/kpasswd_glue.h"
30
31/*
32 A user password change
33
34 Return true if there is a valid error packet (or success) formed in
35 the error_blob
36*/
37NTSTATUS samdb_kpasswd_change_password(TALLOC_CTX *mem_ctx,
38 struct loadparm_context *lp_ctx,
39 struct tevent_context *event_ctx,
40 struct ldb_context *samdb,
41 struct auth_session_info *session_info,
42 const DATA_BLOB *password,
43 enum samPwdChangeReason *reject_reason,
44 struct samr_DomInfo1 **dominfo,
45 const char **error_string,
46 NTSTATUS *result)
47{
48 struct samr_Password *oldLmHash, *oldNtHash;
49 const char * const attrs[] = { "dBCSPwd", "unicodePwd", NULL };
50 struct ldb_message *msg;
51 NTSTATUS status;
52 int ret;
53
54 /* Fetch the old hashes to get the old password in order to perform
55 * the password change operation. Naturally it would be much better to
56 * have a password hash from an authentication around but this doesn't
57 * seem to be the case here. */
58 ret = dsdb_search_one(samdb, mem_ctx, &msg, ldb_get_default_basedn(samdb),
59 LDB_SCOPE_SUBTREE,
60 attrs,
61 DSDB_SEARCH_NO_GLOBAL_CATALOG,
62 "(&(objectClass=user)(sAMAccountName=%s))",
63 session_info->info->account_name);
64 if (ret != LDB_SUCCESS) {
65 *error_string = "No such user when changing password";
66 return NT_STATUS_NO_SUCH_USER;
67 }
68
69 /*
70 * No need to check for password lockout here, the KDC will
71 * have done that when issuing the ticket, which is not based
72 * on the user's password
73 */
74 status = samdb_result_passwords_no_lockout(mem_ctx, lp_ctx, msg,
75 &oldLmHash, &oldNtHash);
76 if (!NT_STATUS_IS_OK(status)) {
77 *error_string = "Not permitted to change password";
78 return NT_STATUS_ACCESS_DENIED;
79 }
80
81 /* Start a SAM with user privileges for the password change */
82 samdb = samdb_connect(mem_ctx, event_ctx, lp_ctx,
83 session_info, 0);
84 if (!samdb) {
85 *error_string = "Failed to open samdb";
86 return NT_STATUS_ACCESS_DENIED;
87 }
88
89 DEBUG(3, ("Changing password of %s\\%s (%s)\n",
90 session_info->info->domain_name,
91 session_info->info->account_name,
92 dom_sid_string(mem_ctx, &session_info->security_token->sids[PRIMARY_USER_SID_INDEX])));
93
94 /* Performs the password change */
95 status = samdb_set_password_sid(samdb,
96 mem_ctx,
97 &session_info->security_token->sids[PRIMARY_USER_SID_INDEX],
98 NULL,
99 password,
100 NULL,
101 NULL,
102 oldLmHash,
103 oldNtHash, /* this is a user password change */
104 reject_reason,
105 dominfo);
106 if (!NT_STATUS_IS_OK(status)) {
107 *error_string = nt_errstr(status);
108 }
109 *result = status;
110
111 return NT_STATUS_OK;
112}
Note: See TracBrowser for help on using the repository browser.