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b176ddba2a
BUG: https://bugzilla.samba.org/show_bug.cgi?id=14558 Signed-off-by: Andrew Bartlett <abartlet@samba.org> Reviewed-by: Joseph Sutton <josephsutton@catalyst.net.nz>
1205 lines
33 KiB
C
1205 lines
33 KiB
C
/*
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Unix SMB/CIFS implementation.
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Password and authentication handling
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Copyright (C) Andrew Bartlett <abartlet@samba.org> 2001-2010
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Copyright (C) Gerald Carter 2003
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Copyright (C) Stefan Metzmacher 2005
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Copyright (C) Matthias Dieter Wallnöfer 2009
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This program is free software; you can redistribute it and/or modify
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it under the terms of the GNU General Public License as published by
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the Free Software Foundation; either version 3 of the License, or
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(at your option) any later version.
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This program is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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GNU General Public License for more details.
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You should have received a copy of the GNU General Public License
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along with this program. If not, see <http://www.gnu.org/licenses/>.
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*/
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#include "includes.h"
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#include "system/time.h"
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#include "auth/auth.h"
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#include <ldb.h>
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#include "dsdb/samdb/samdb.h"
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#include "libcli/security/security.h"
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#include "auth/auth_sam.h"
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#include "dsdb/common/util.h"
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#include "libcli/ldap/ldap_ndr.h"
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#include "param/param.h"
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#include "librpc/gen_ndr/ndr_winbind_c.h"
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#undef DBGC_CLASS
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#define DBGC_CLASS DBGC_AUTH
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#define KRBTGT_ATTRS \
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/* required for the krb5 kdc */ \
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"objectClass", \
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"sAMAccountName", \
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"userPrincipalName", \
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"servicePrincipalName", \
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"msDS-KeyVersionNumber", \
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"msDS-SecondaryKrbTgtNumber", \
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"msDS-SupportedEncryptionTypes", \
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"supplementalCredentials", \
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"msDS-AllowedToDelegateTo", \
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\
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/* passwords */ \
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"dBCSPwd", \
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"unicodePwd", \
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\
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"userAccountControl", \
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"msDS-User-Account-Control-Computed", \
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"objectSid", \
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\
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"pwdLastSet", \
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"msDS-UserPasswordExpiryTimeComputed", \
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"accountExpires", \
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\
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/* Needed for RODC rule processing */ \
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"msDS-KrbTgtLinkBL"
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const char *krbtgt_attrs[] = {
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KRBTGT_ATTRS, NULL
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};
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const char *server_attrs[] = {
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KRBTGT_ATTRS, NULL
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};
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const char *user_attrs[] = {
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/*
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* This ordering (having msDS-ResultantPSO first) is
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* important. By processing this attribute first it is
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* available in the operational module for the other PSO
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* attribute calcuations to use.
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*/
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"msDS-ResultantPSO",
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KRBTGT_ATTRS,
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"logonHours",
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/*
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* To allow us to zero the badPwdCount and lockoutTime on
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* successful logon, without database churn
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*/
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"lockoutTime",
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/*
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* Needed for SendToSAM requests
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*/
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"objectGUID",
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/* check 'allowed workstations' */
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"userWorkstations",
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/* required for user_info_dc, not access control: */
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"displayName",
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"scriptPath",
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"profilePath",
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"homeDirectory",
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"homeDrive",
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"lastLogon",
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"lastLogonTimestamp",
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"lastLogoff",
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"accountExpires",
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"badPwdCount",
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"logonCount",
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"primaryGroupID",
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"memberOf",
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"badPasswordTime",
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"lmPwdHistory",
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"ntPwdHistory",
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NULL,
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};
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/****************************************************************************
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Check if a user is allowed to logon at this time. Note this is the
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servers local time, as logon hours are just specified as a weekly
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bitmask.
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****************************************************************************/
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static bool logon_hours_ok(struct ldb_message *msg, const char *name_for_logs)
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{
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/* In logon hours first bit is Sunday from 12AM to 1AM */
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const struct ldb_val *hours;
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struct tm *utctime;
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time_t lasttime;
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const char *asct;
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uint8_t bitmask, bitpos;
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hours = ldb_msg_find_ldb_val(msg, "logonHours");
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if (!hours) {
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DEBUG(5,("logon_hours_ok: No hours restrictions for user %s\n", name_for_logs));
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return true;
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}
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if (hours->length != 168/8) {
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DEBUG(5,("logon_hours_ok: malformed logon hours restrictions for user %s\n", name_for_logs));
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return true;
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}
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lasttime = time(NULL);
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utctime = gmtime(&lasttime);
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if (!utctime) {
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DEBUG(1, ("logon_hours_ok: failed to get gmtime. Failing logon for user %s\n",
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name_for_logs));
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return false;
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}
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/* find the corresponding byte and bit */
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bitpos = (utctime->tm_wday * 24 + utctime->tm_hour) % 168;
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bitmask = 1 << (bitpos % 8);
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if (! (hours->data[bitpos/8] & bitmask)) {
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struct tm *t = localtime(&lasttime);
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if (!t) {
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asct = "INVALID TIME";
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} else {
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asct = asctime(t);
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if (!asct) {
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asct = "INVALID TIME";
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}
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}
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DEBUG(1, ("logon_hours_ok: Account for user %s not allowed to "
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"logon at this time (%s).\n",
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name_for_logs, asct ));
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return false;
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}
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asct = asctime(utctime);
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DEBUG(5,("logon_hours_ok: user %s allowed to logon at this time (%s)\n",
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name_for_logs, asct ? asct : "UNKNOWN TIME" ));
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return true;
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}
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/****************************************************************************
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Do a specific test for a SAM_ACCOUNT being valid for this connection
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(ie not disabled, expired and the like).
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****************************************************************************/
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_PUBLIC_ NTSTATUS authsam_account_ok(TALLOC_CTX *mem_ctx,
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struct ldb_context *sam_ctx,
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uint32_t logon_parameters,
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struct ldb_dn *domain_dn,
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struct ldb_message *msg,
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const char *logon_workstation,
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const char *name_for_logs,
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bool allow_domain_trust,
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bool password_change)
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{
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uint16_t acct_flags;
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const char *workstation_list;
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NTTIME acct_expiry;
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NTTIME must_change_time;
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struct timeval tv_now = timeval_current();
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NTTIME now = timeval_to_nttime(&tv_now);
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DEBUG(4,("authsam_account_ok: Checking SMB password for user %s\n", name_for_logs));
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acct_flags = samdb_result_acct_flags(msg, "msDS-User-Account-Control-Computed");
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acct_expiry = samdb_result_account_expires(msg);
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/* Check for when we must change this password, taking the
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* userAccountControl flags into account */
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must_change_time = samdb_result_nttime(msg,
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"msDS-UserPasswordExpiryTimeComputed", 0);
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workstation_list = ldb_msg_find_attr_as_string(msg, "userWorkstations", NULL);
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/* Quit if the account was disabled. */
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if (acct_flags & ACB_DISABLED) {
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DEBUG(2,("authsam_account_ok: Account for user '%s' was disabled.\n", name_for_logs));
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return NT_STATUS_ACCOUNT_DISABLED;
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}
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/* Quit if the account was locked out. */
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if (acct_flags & ACB_AUTOLOCK) {
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DEBUG(2,("authsam_account_ok: Account for user %s was locked out.\n", name_for_logs));
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return NT_STATUS_ACCOUNT_LOCKED_OUT;
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}
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/* Test account expire time */
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if (now > acct_expiry) {
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DEBUG(2,("authsam_account_ok: Account for user '%s' has expired.\n", name_for_logs));
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DEBUG(3,("authsam_account_ok: Account expired at '%s'.\n",
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nt_time_string(mem_ctx, acct_expiry)));
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return NT_STATUS_ACCOUNT_EXPIRED;
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}
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/* check for immediate expiry "must change at next logon" (but not if this is a password change request) */
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if ((must_change_time == 0) && !password_change) {
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DEBUG(2,("sam_account_ok: Account for user '%s' password must change!.\n",
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name_for_logs));
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return NT_STATUS_PASSWORD_MUST_CHANGE;
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}
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/* check for expired password (but not if this is a password change request) */
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if ((must_change_time < now) && !password_change) {
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DEBUG(2,("sam_account_ok: Account for user '%s' password expired!.\n",
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name_for_logs));
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DEBUG(2,("sam_account_ok: Password expired at '%s' unix time.\n",
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nt_time_string(mem_ctx, must_change_time)));
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return NT_STATUS_PASSWORD_EXPIRED;
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}
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/* Test workstation. Workstation list is comma separated. */
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if (logon_workstation && workstation_list && *workstation_list) {
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bool invalid_ws = true;
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int i;
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char **workstations = str_list_make(mem_ctx, workstation_list, ",");
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for (i = 0; workstations && workstations[i]; i++) {
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DEBUG(10,("sam_account_ok: checking for workstation match '%s' and '%s'\n",
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workstations[i], logon_workstation));
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if (strequal(workstations[i], logon_workstation)) {
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invalid_ws = false;
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break;
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}
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}
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talloc_free(workstations);
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if (invalid_ws) {
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return NT_STATUS_INVALID_WORKSTATION;
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}
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}
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if (!logon_hours_ok(msg, name_for_logs)) {
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return NT_STATUS_INVALID_LOGON_HOURS;
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}
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if (!allow_domain_trust) {
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if (acct_flags & ACB_DOMTRUST) {
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DEBUG(2,("sam_account_ok: Domain trust account %s denied by server\n", name_for_logs));
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return NT_STATUS_NOLOGON_INTERDOMAIN_TRUST_ACCOUNT;
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}
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}
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if (!(logon_parameters & MSV1_0_ALLOW_SERVER_TRUST_ACCOUNT)) {
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if (acct_flags & ACB_SVRTRUST) {
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DEBUG(2,("sam_account_ok: Server trust account %s denied by server\n", name_for_logs));
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return NT_STATUS_NOLOGON_SERVER_TRUST_ACCOUNT;
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}
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}
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if (!(logon_parameters & MSV1_0_ALLOW_WORKSTATION_TRUST_ACCOUNT)) {
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/* TODO: this fails with current solaris client. We
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need to work with Gordon to work out why */
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if (acct_flags & ACB_WSTRUST) {
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DEBUG(4,("sam_account_ok: Wksta trust account %s denied by server\n", name_for_logs));
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return NT_STATUS_NOLOGON_WORKSTATION_TRUST_ACCOUNT;
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}
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}
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return NT_STATUS_OK;
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}
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static NTSTATUS authsam_domain_group_filter(TALLOC_CTX *mem_ctx,
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char **_filter)
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{
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char *filter = NULL;
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*_filter = NULL;
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filter = talloc_strdup(mem_ctx, "(&(objectClass=group)");
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if (filter == NULL) {
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return NT_STATUS_NO_MEMORY;
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}
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/*
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* Skip all builtin groups, they're added later.
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*/
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filter = talloc_asprintf_append_buffer(filter,
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"(!(groupType:1.2.840.113556.1.4.803:=%u))",
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GROUP_TYPE_BUILTIN_LOCAL_GROUP);
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if (filter == NULL) {
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return NT_STATUS_NO_MEMORY;
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}
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/*
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* Only include security groups.
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*/
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filter = talloc_asprintf_append_buffer(filter,
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"(groupType:1.2.840.113556.1.4.803:=%u))",
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GROUP_TYPE_SECURITY_ENABLED);
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if (filter == NULL) {
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return NT_STATUS_NO_MEMORY;
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}
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*_filter = filter;
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return NT_STATUS_OK;
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}
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_PUBLIC_ NTSTATUS authsam_make_user_info_dc(TALLOC_CTX *mem_ctx,
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struct ldb_context *sam_ctx,
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const char *netbios_name,
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const char *domain_name,
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const char *dns_domain_name,
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struct ldb_dn *domain_dn,
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struct ldb_message *msg,
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DATA_BLOB user_sess_key,
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DATA_BLOB lm_sess_key,
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struct auth_user_info_dc **_user_info_dc)
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{
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NTSTATUS status;
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struct auth_user_info_dc *user_info_dc;
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struct auth_user_info *info;
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const char *str = NULL;
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char *filter = NULL;
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/* SIDs for the account and his primary group */
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struct dom_sid *account_sid;
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struct dom_sid_buf buf;
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const char *primary_group_dn;
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DATA_BLOB primary_group_blob;
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/* SID structures for the expanded group memberships */
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struct dom_sid *sids = NULL;
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unsigned int num_sids = 0, i;
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struct dom_sid *domain_sid;
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TALLOC_CTX *tmp_ctx;
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struct ldb_message_element *el;
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user_info_dc = talloc(mem_ctx, struct auth_user_info_dc);
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NT_STATUS_HAVE_NO_MEMORY(user_info_dc);
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tmp_ctx = talloc_new(user_info_dc);
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if (tmp_ctx == NULL) {
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TALLOC_FREE(user_info_dc);
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return NT_STATUS_NO_MEMORY;
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}
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sids = talloc_array(user_info_dc, struct dom_sid, 2);
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if (sids == NULL) {
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TALLOC_FREE(user_info_dc);
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return NT_STATUS_NO_MEMORY;
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}
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num_sids = 2;
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account_sid = samdb_result_dom_sid(tmp_ctx, msg, "objectSid");
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if (account_sid == NULL) {
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TALLOC_FREE(user_info_dc);
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return NT_STATUS_NO_MEMORY;
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}
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status = dom_sid_split_rid(tmp_ctx, account_sid, &domain_sid, NULL);
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if (!NT_STATUS_IS_OK(status)) {
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talloc_free(user_info_dc);
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return status;
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}
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sids[PRIMARY_USER_SID_INDEX] = *account_sid;
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sids[PRIMARY_GROUP_SID_INDEX] = *domain_sid;
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sid_append_rid(&sids[PRIMARY_GROUP_SID_INDEX], ldb_msg_find_attr_as_uint(msg, "primaryGroupID", ~0));
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/*
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* Filter out builtin groups from this token. We will search
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* for builtin groups later, and not include them in the PAC
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* or SamLogon validation info.
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*/
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status = authsam_domain_group_filter(tmp_ctx, &filter);
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if (!NT_STATUS_IS_OK(status)) {
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TALLOC_FREE(user_info_dc);
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return status;
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}
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primary_group_dn = talloc_asprintf(
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tmp_ctx,
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"<SID=%s>",
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dom_sid_str_buf(&sids[PRIMARY_GROUP_SID_INDEX], &buf));
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if (primary_group_dn == NULL) {
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TALLOC_FREE(user_info_dc);
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return NT_STATUS_NO_MEMORY;
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}
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primary_group_blob = data_blob_string_const(primary_group_dn);
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/* Expands the primary group - this function takes in
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* memberOf-like values, so we fake one up with the
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* <SID=S-...> format of DN and then let it expand
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* them, as long as they meet the filter - so only
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* domain groups, not builtin groups
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*
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* The primary group is still treated specially, so we set the
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* 'only childs' flag to true
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*/
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status = dsdb_expand_nested_groups(sam_ctx, &primary_group_blob, true, filter,
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user_info_dc, &sids, &num_sids);
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if (!NT_STATUS_IS_OK(status)) {
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talloc_free(user_info_dc);
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return status;
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}
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/* Expands the additional groups */
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el = ldb_msg_find_element(msg, "memberOf");
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for (i = 0; el && i < el->num_values; i++) {
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/* This function takes in memberOf values and expands
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* them, as long as they meet the filter - so only
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* domain groups, not builtin groups */
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status = dsdb_expand_nested_groups(sam_ctx, &el->values[i], false, filter,
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user_info_dc, &sids, &num_sids);
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if (!NT_STATUS_IS_OK(status)) {
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talloc_free(user_info_dc);
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return status;
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}
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}
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user_info_dc->sids = sids;
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user_info_dc->num_sids = num_sids;
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user_info_dc->info = info = talloc_zero(user_info_dc, struct auth_user_info);
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NT_STATUS_HAVE_NO_MEMORY(user_info_dc->info);
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info->account_name = talloc_steal(info,
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ldb_msg_find_attr_as_string(msg, "sAMAccountName", NULL));
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info->user_principal_name = talloc_steal(info,
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ldb_msg_find_attr_as_string(msg, "userPrincipalName", NULL));
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if (info->user_principal_name == NULL && dns_domain_name != NULL) {
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info->user_principal_name = talloc_asprintf(info, "%s@%s",
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info->account_name,
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dns_domain_name);
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if (info->user_principal_name == NULL) {
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TALLOC_FREE(user_info_dc);
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return NT_STATUS_NO_MEMORY;
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}
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info->user_principal_constructed = true;
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}
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info->domain_name = talloc_strdup(info, domain_name);
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if (info->domain_name == NULL) {
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TALLOC_FREE(user_info_dc);
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return NT_STATUS_NO_MEMORY;
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}
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if (dns_domain_name != NULL) {
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info->dns_domain_name = talloc_strdup(info, dns_domain_name);
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if (info->dns_domain_name == NULL) {
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TALLOC_FREE(user_info_dc);
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return NT_STATUS_NO_MEMORY;
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}
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}
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|
|
str = ldb_msg_find_attr_as_string(msg, "displayName", "");
|
|
info->full_name = talloc_strdup(info, str);
|
|
if (info->full_name == NULL) {
|
|
TALLOC_FREE(user_info_dc);
|
|
return NT_STATUS_NO_MEMORY;
|
|
}
|
|
|
|
str = ldb_msg_find_attr_as_string(msg, "scriptPath", "");
|
|
info->logon_script = talloc_strdup(info, str);
|
|
if (info->logon_script == NULL) {
|
|
TALLOC_FREE(user_info_dc);
|
|
return NT_STATUS_NO_MEMORY;
|
|
}
|
|
|
|
str = ldb_msg_find_attr_as_string(msg, "profilePath", "");
|
|
info->profile_path = talloc_strdup(info, str);
|
|
if (info->profile_path == NULL) {
|
|
TALLOC_FREE(user_info_dc);
|
|
return NT_STATUS_NO_MEMORY;
|
|
}
|
|
|
|
str = ldb_msg_find_attr_as_string(msg, "homeDirectory", "");
|
|
info->home_directory = talloc_strdup(info, str);
|
|
if (info->home_directory == NULL) {
|
|
TALLOC_FREE(user_info_dc);
|
|
return NT_STATUS_NO_MEMORY;
|
|
}
|
|
|
|
str = ldb_msg_find_attr_as_string(msg, "homeDrive", "");
|
|
info->home_drive = talloc_strdup(info, str);
|
|
if (info->home_drive == NULL) {
|
|
TALLOC_FREE(user_info_dc);
|
|
return NT_STATUS_NO_MEMORY;
|
|
}
|
|
|
|
info->logon_server = talloc_strdup(info, netbios_name);
|
|
if (info->logon_server == NULL) {
|
|
TALLOC_FREE(user_info_dc);
|
|
return NT_STATUS_NO_MEMORY;
|
|
}
|
|
|
|
info->last_logon = samdb_result_nttime(msg, "lastLogon", 0);
|
|
info->last_logoff = samdb_result_last_logoff(msg);
|
|
info->acct_expiry = samdb_result_account_expires(msg);
|
|
info->last_password_change = samdb_result_nttime(msg,
|
|
"pwdLastSet", 0);
|
|
info->allow_password_change
|
|
= samdb_result_allow_password_change(sam_ctx, mem_ctx,
|
|
domain_dn, msg, "pwdLastSet");
|
|
info->force_password_change = samdb_result_nttime(msg,
|
|
"msDS-UserPasswordExpiryTimeComputed", 0);
|
|
info->logon_count = ldb_msg_find_attr_as_uint(msg, "logonCount", 0);
|
|
info->bad_password_count = ldb_msg_find_attr_as_uint(msg, "badPwdCount",
|
|
0);
|
|
|
|
info->acct_flags = samdb_result_acct_flags(msg, "msDS-User-Account-Control-Computed");
|
|
|
|
user_info_dc->user_session_key = data_blob_talloc(user_info_dc,
|
|
user_sess_key.data,
|
|
user_sess_key.length);
|
|
if (user_sess_key.data) {
|
|
if (user_info_dc->user_session_key.data == NULL) {
|
|
TALLOC_FREE(user_info_dc);
|
|
return NT_STATUS_NO_MEMORY;
|
|
}
|
|
}
|
|
user_info_dc->lm_session_key = data_blob_talloc(user_info_dc,
|
|
lm_sess_key.data,
|
|
lm_sess_key.length);
|
|
if (lm_sess_key.data) {
|
|
if (user_info_dc->lm_session_key.data == NULL) {
|
|
TALLOC_FREE(user_info_dc);
|
|
return NT_STATUS_NO_MEMORY;
|
|
}
|
|
}
|
|
|
|
if (info->acct_flags & ACB_SVRTRUST) {
|
|
/* the SID_NT_ENTERPRISE_DCS SID gets added into the
|
|
PAC */
|
|
user_info_dc->sids = talloc_realloc(user_info_dc,
|
|
user_info_dc->sids,
|
|
struct dom_sid,
|
|
user_info_dc->num_sids+1);
|
|
if (user_info_dc->sids == NULL) {
|
|
TALLOC_FREE(user_info_dc);
|
|
return NT_STATUS_NO_MEMORY;
|
|
}
|
|
user_info_dc->sids[user_info_dc->num_sids] = global_sid_Enterprise_DCs;
|
|
user_info_dc->num_sids++;
|
|
}
|
|
|
|
if ((info->acct_flags & (ACB_PARTIAL_SECRETS_ACCOUNT | ACB_WSTRUST)) ==
|
|
(ACB_PARTIAL_SECRETS_ACCOUNT | ACB_WSTRUST)) {
|
|
/* the DOMAIN_RID_ENTERPRISE_READONLY_DCS PAC */
|
|
user_info_dc->sids = talloc_realloc(user_info_dc,
|
|
user_info_dc->sids,
|
|
struct dom_sid,
|
|
user_info_dc->num_sids+1);
|
|
if (user_info_dc->sids == NULL) {
|
|
TALLOC_FREE(user_info_dc);
|
|
return NT_STATUS_NO_MEMORY;
|
|
}
|
|
user_info_dc->sids[user_info_dc->num_sids] = *domain_sid;
|
|
sid_append_rid(&user_info_dc->sids[user_info_dc->num_sids],
|
|
DOMAIN_RID_ENTERPRISE_READONLY_DCS);
|
|
user_info_dc->num_sids++;
|
|
}
|
|
|
|
info->authenticated = true;
|
|
|
|
talloc_free(tmp_ctx);
|
|
*_user_info_dc = user_info_dc;
|
|
|
|
return NT_STATUS_OK;
|
|
}
|
|
|
|
_PUBLIC_ NTSTATUS authsam_update_user_info_dc(TALLOC_CTX *mem_ctx,
|
|
struct ldb_context *sam_ctx,
|
|
struct auth_user_info_dc *user_info_dc)
|
|
{
|
|
char *filter = NULL;
|
|
NTSTATUS status;
|
|
uint32_t i;
|
|
uint32_t n = 0;
|
|
|
|
/*
|
|
* This function exists to expand group memberships
|
|
* in the local domain (forest), as the token
|
|
* may come from a different domain.
|
|
*/
|
|
|
|
/*
|
|
* Filter out builtin groups from this token. We will search
|
|
* for builtin groups later.
|
|
*/
|
|
status = authsam_domain_group_filter(mem_ctx, &filter);
|
|
if (!NT_STATUS_IS_OK(status)) {
|
|
TALLOC_FREE(user_info_dc);
|
|
return status;
|
|
}
|
|
|
|
/*
|
|
* We loop only over the existing number of
|
|
* sids.
|
|
*/
|
|
n = user_info_dc->num_sids;
|
|
for (i = 0; i < n; i++) {
|
|
struct dom_sid *sid = &user_info_dc->sids[i];
|
|
struct dom_sid_buf sid_buf;
|
|
char dn_str[sizeof(sid_buf.buf)*2];
|
|
DATA_BLOB dn_blob = data_blob_null;
|
|
|
|
snprintf(dn_str,
|
|
sizeof(dn_str),
|
|
"<SID=%s>",
|
|
dom_sid_str_buf(sid, &sid_buf));
|
|
dn_blob = data_blob_string_const(dn_str);
|
|
|
|
/*
|
|
* We already have the SID in the token, so set
|
|
* 'only childs' flag to true and add all
|
|
* groups which match the filter.
|
|
*/
|
|
status = dsdb_expand_nested_groups(sam_ctx, &dn_blob,
|
|
true, filter,
|
|
user_info_dc,
|
|
&user_info_dc->sids,
|
|
&user_info_dc->num_sids);
|
|
if (!NT_STATUS_IS_OK(status)) {
|
|
return status;
|
|
}
|
|
}
|
|
|
|
return NT_STATUS_OK;
|
|
}
|
|
|
|
NTSTATUS sam_get_results_principal(struct ldb_context *sam_ctx,
|
|
TALLOC_CTX *mem_ctx, const char *principal,
|
|
const char **attrs,
|
|
struct ldb_dn **domain_dn,
|
|
struct ldb_message **msg)
|
|
{
|
|
struct ldb_dn *user_dn;
|
|
NTSTATUS nt_status;
|
|
TALLOC_CTX *tmp_ctx = talloc_new(mem_ctx);
|
|
int ret;
|
|
|
|
if (!tmp_ctx) {
|
|
return NT_STATUS_NO_MEMORY;
|
|
}
|
|
|
|
nt_status = crack_user_principal_name(sam_ctx, tmp_ctx, principal,
|
|
&user_dn, domain_dn);
|
|
if (!NT_STATUS_IS_OK(nt_status)) {
|
|
talloc_free(tmp_ctx);
|
|
return nt_status;
|
|
}
|
|
|
|
/* pull the user attributes */
|
|
ret = dsdb_search_one(sam_ctx, tmp_ctx, msg, user_dn,
|
|
LDB_SCOPE_BASE, attrs,
|
|
DSDB_SEARCH_SHOW_EXTENDED_DN | DSDB_SEARCH_NO_GLOBAL_CATALOG,
|
|
"(objectClass=*)");
|
|
if (ret != LDB_SUCCESS) {
|
|
talloc_free(tmp_ctx);
|
|
return NT_STATUS_INTERNAL_DB_CORRUPTION;
|
|
}
|
|
talloc_steal(mem_ctx, *msg);
|
|
talloc_steal(mem_ctx, *domain_dn);
|
|
talloc_free(tmp_ctx);
|
|
|
|
return NT_STATUS_OK;
|
|
}
|
|
|
|
/* Used in the gensec_gssapi and gensec_krb5 server-side code, where the PAC isn't available, and for tokenGroups in the DSDB stack.
|
|
|
|
Supply either a principal or a DN
|
|
*/
|
|
NTSTATUS authsam_get_user_info_dc_principal(TALLOC_CTX *mem_ctx,
|
|
struct loadparm_context *lp_ctx,
|
|
struct ldb_context *sam_ctx,
|
|
const char *principal,
|
|
struct ldb_dn *user_dn,
|
|
struct auth_user_info_dc **user_info_dc)
|
|
{
|
|
NTSTATUS nt_status;
|
|
DATA_BLOB user_sess_key = data_blob(NULL, 0);
|
|
DATA_BLOB lm_sess_key = data_blob(NULL, 0);
|
|
|
|
struct ldb_message *msg;
|
|
struct ldb_dn *domain_dn;
|
|
|
|
TALLOC_CTX *tmp_ctx = talloc_new(mem_ctx);
|
|
if (!tmp_ctx) {
|
|
return NT_STATUS_NO_MEMORY;
|
|
}
|
|
|
|
if (principal) {
|
|
nt_status = sam_get_results_principal(sam_ctx, tmp_ctx, principal,
|
|
user_attrs, &domain_dn, &msg);
|
|
if (!NT_STATUS_IS_OK(nt_status)) {
|
|
talloc_free(tmp_ctx);
|
|
return nt_status;
|
|
}
|
|
} else if (user_dn) {
|
|
struct dom_sid *user_sid, *domain_sid;
|
|
int ret;
|
|
/* pull the user attributes */
|
|
ret = dsdb_search_one(sam_ctx, tmp_ctx, &msg, user_dn,
|
|
LDB_SCOPE_BASE, user_attrs,
|
|
DSDB_SEARCH_SHOW_EXTENDED_DN | DSDB_SEARCH_NO_GLOBAL_CATALOG,
|
|
"(objectClass=*)");
|
|
if (ret == LDB_ERR_NO_SUCH_OBJECT) {
|
|
talloc_free(tmp_ctx);
|
|
return NT_STATUS_NO_SUCH_USER;
|
|
} else if (ret != LDB_SUCCESS) {
|
|
talloc_free(tmp_ctx);
|
|
return NT_STATUS_INTERNAL_DB_CORRUPTION;
|
|
}
|
|
|
|
user_sid = samdb_result_dom_sid(msg, msg, "objectSid");
|
|
|
|
nt_status = dom_sid_split_rid(tmp_ctx, user_sid, &domain_sid, NULL);
|
|
if (!NT_STATUS_IS_OK(nt_status)) {
|
|
return nt_status;
|
|
}
|
|
|
|
domain_dn = samdb_search_dn(sam_ctx, mem_ctx, NULL,
|
|
"(&(objectSid=%s)(objectClass=domain))",
|
|
ldap_encode_ndr_dom_sid(tmp_ctx, domain_sid));
|
|
if (!domain_dn) {
|
|
struct dom_sid_buf buf;
|
|
DEBUG(3, ("authsam_get_user_info_dc_principal: Failed to find domain with: SID %s\n",
|
|
dom_sid_str_buf(domain_sid, &buf)));
|
|
return NT_STATUS_NO_SUCH_USER;
|
|
}
|
|
|
|
} else {
|
|
return NT_STATUS_INVALID_PARAMETER;
|
|
}
|
|
|
|
nt_status = authsam_make_user_info_dc(tmp_ctx, sam_ctx,
|
|
lpcfg_netbios_name(lp_ctx),
|
|
lpcfg_sam_name(lp_ctx),
|
|
lpcfg_sam_dnsname(lp_ctx),
|
|
domain_dn,
|
|
msg,
|
|
user_sess_key, lm_sess_key,
|
|
user_info_dc);
|
|
if (!NT_STATUS_IS_OK(nt_status)) {
|
|
talloc_free(tmp_ctx);
|
|
return nt_status;
|
|
}
|
|
|
|
talloc_steal(mem_ctx, *user_info_dc);
|
|
talloc_free(tmp_ctx);
|
|
|
|
return NT_STATUS_OK;
|
|
}
|
|
|
|
/*
|
|
* Returns the details for the Password Settings Object (PSO), if one applies
|
|
* the user.
|
|
*/
|
|
static int authsam_get_user_pso(struct ldb_context *sam_ctx,
|
|
TALLOC_CTX *mem_ctx,
|
|
struct ldb_message *user_msg,
|
|
struct ldb_message **pso_msg)
|
|
{
|
|
const char *attrs[] = { "msDS-LockoutThreshold",
|
|
"msDS-LockoutObservationWindow",
|
|
NULL };
|
|
struct ldb_dn *pso_dn = NULL;
|
|
struct ldb_result *res = NULL;
|
|
int ret;
|
|
|
|
/* check if the user has a PSO that applies to it */
|
|
pso_dn = ldb_msg_find_attr_as_dn(sam_ctx, mem_ctx, user_msg,
|
|
"msDS-ResultantPSO");
|
|
|
|
if (pso_dn != NULL) {
|
|
ret = dsdb_search_dn(sam_ctx, mem_ctx, &res, pso_dn, attrs, 0);
|
|
if (ret != LDB_SUCCESS) {
|
|
return ret;
|
|
}
|
|
|
|
*pso_msg = res->msgs[0];
|
|
}
|
|
|
|
return LDB_SUCCESS;
|
|
}
|
|
|
|
NTSTATUS authsam_update_bad_pwd_count(struct ldb_context *sam_ctx,
|
|
struct ldb_message *msg,
|
|
struct ldb_dn *domain_dn)
|
|
{
|
|
const char *attrs[] = { "lockoutThreshold",
|
|
"lockOutObservationWindow",
|
|
"lockoutDuration",
|
|
"pwdProperties",
|
|
NULL };
|
|
int ret;
|
|
NTSTATUS status;
|
|
struct ldb_result *domain_res;
|
|
struct ldb_message *msg_mod = NULL;
|
|
struct ldb_message *pso_msg = NULL;
|
|
TALLOC_CTX *mem_ctx;
|
|
|
|
mem_ctx = talloc_new(msg);
|
|
if (mem_ctx == NULL) {
|
|
return NT_STATUS_NO_MEMORY;
|
|
}
|
|
|
|
ret = dsdb_search_dn(sam_ctx, mem_ctx, &domain_res, domain_dn, attrs, 0);
|
|
if (ret != LDB_SUCCESS) {
|
|
TALLOC_FREE(mem_ctx);
|
|
return NT_STATUS_INTERNAL_DB_CORRUPTION;
|
|
}
|
|
|
|
ret = authsam_get_user_pso(sam_ctx, mem_ctx, msg, &pso_msg);
|
|
if (ret != LDB_SUCCESS) {
|
|
|
|
/*
|
|
* fallback to using the domain defaults so that we still
|
|
* record the bad password attempt
|
|
*/
|
|
DBG_ERR("Error (%d) checking PSO for %s",
|
|
ret, ldb_dn_get_linearized(msg->dn));
|
|
}
|
|
|
|
status = dsdb_update_bad_pwd_count(mem_ctx, sam_ctx,
|
|
msg, domain_res->msgs[0], pso_msg,
|
|
&msg_mod);
|
|
if (!NT_STATUS_IS_OK(status)) {
|
|
TALLOC_FREE(mem_ctx);
|
|
return status;
|
|
}
|
|
|
|
if (msg_mod != NULL) {
|
|
struct ldb_request *req;
|
|
|
|
ret = ldb_build_mod_req(&req, sam_ctx, sam_ctx,
|
|
msg_mod,
|
|
NULL,
|
|
NULL,
|
|
ldb_op_default_callback,
|
|
NULL);
|
|
if (ret != LDB_SUCCESS) {
|
|
goto done;
|
|
}
|
|
|
|
ret = ldb_request_add_control(req,
|
|
DSDB_CONTROL_FORCE_RODC_LOCAL_CHANGE,
|
|
false, NULL);
|
|
if (ret != LDB_SUCCESS) {
|
|
talloc_free(req);
|
|
goto done;
|
|
}
|
|
|
|
ret = dsdb_autotransaction_request(sam_ctx, req);
|
|
talloc_free(req);
|
|
}
|
|
|
|
done:
|
|
if (ret != LDB_SUCCESS) {
|
|
DBG_ERR("Failed to update badPwdCount, badPasswordTime or "
|
|
"set lockoutTime on %s: %s\n",
|
|
ldb_dn_get_linearized(msg->dn),
|
|
ldb_errstring(sam_ctx));
|
|
TALLOC_FREE(mem_ctx);
|
|
return NT_STATUS_INTERNAL_ERROR;
|
|
}
|
|
|
|
TALLOC_FREE(mem_ctx);
|
|
return NT_STATUS_OK;
|
|
}
|
|
|
|
|
|
static NTSTATUS authsam_update_lastlogon_timestamp(struct ldb_context *sam_ctx,
|
|
struct ldb_message *msg_mod,
|
|
struct ldb_dn *domain_dn,
|
|
NTTIME old_timestamp,
|
|
NTTIME now)
|
|
{
|
|
/*
|
|
* We only set lastLogonTimestamp if the current value is older than
|
|
* now - msDS-LogonTimeSyncInterval days.
|
|
*
|
|
* msDS-LogonTimeSyncInterval is an int32_t number of days, while
|
|
* lastLogonTimestamp is in the 64 bit 100ns NTTIME format.
|
|
*
|
|
* The docs say: "the initial update, after the domain functional
|
|
* level is raised to DS_BEHAVIOR_WIN2003 or higher, is calculated as
|
|
* 14 days minus a random percentage of 5 days", but we aren't doing
|
|
* that. The blogosphere seems to think that this randomised update
|
|
* happens everytime, but [MS-ADA1] doesn't agree.
|
|
*
|
|
* Dochelp referred us to the following blog post:
|
|
* http://blogs.technet.com/b/askds/archive/2009/04/15/the-lastlogontimestamp-attribute-what-it-was-designed-for-and-how-it-works.aspx
|
|
*
|
|
* en msDS-LogonTimeSyncInterval is zero, the lastLogonTimestamp is
|
|
* not changed.
|
|
*/
|
|
static const char *attrs[] = { "msDS-LogonTimeSyncInterval",
|
|
NULL };
|
|
int ret;
|
|
struct ldb_result *domain_res = NULL;
|
|
TALLOC_CTX *mem_ctx = NULL;
|
|
int32_t sync_interval;
|
|
NTTIME sync_interval_nt;
|
|
|
|
mem_ctx = talloc_new(msg_mod);
|
|
if (mem_ctx == NULL) {
|
|
return NT_STATUS_NO_MEMORY;
|
|
}
|
|
|
|
ret = dsdb_search_dn(sam_ctx, mem_ctx, &domain_res, domain_dn, attrs,
|
|
0);
|
|
if (ret != LDB_SUCCESS || domain_res->count != 1) {
|
|
TALLOC_FREE(mem_ctx);
|
|
return NT_STATUS_INTERNAL_DB_CORRUPTION;
|
|
}
|
|
|
|
sync_interval = ldb_msg_find_attr_as_int(domain_res->msgs[0],
|
|
"msDS-LogonTimeSyncInterval",
|
|
14);
|
|
DEBUG(5, ("sync interval is %d\n", sync_interval));
|
|
if (sync_interval == 0){
|
|
/*
|
|
* Setting msDS-LogonTimeSyncInterval to zero is how you ask
|
|
* that nothing happens here.
|
|
*/
|
|
TALLOC_FREE(mem_ctx);
|
|
return NT_STATUS_OK;
|
|
}
|
|
else if (sync_interval >= 5){
|
|
/*
|
|
* Subtract "a random percentage of 5" days. Presumably this
|
|
* percentage is between 0 and 100, and modulus is accurate
|
|
* enough.
|
|
*/
|
|
uint32_t r = generate_random() % 6;
|
|
sync_interval -= r;
|
|
DEBUG(5, ("randomised sync interval is %d (-%d)\n", sync_interval, r));
|
|
}
|
|
/* In the case where sync_interval < 5 there is no randomisation */
|
|
|
|
sync_interval_nt = sync_interval * 24LL * 3600LL * 10000000LL;
|
|
|
|
DEBUG(5, ("old timestamp is %lld, threshold %lld, diff %lld\n",
|
|
(long long int)old_timestamp,
|
|
(long long int)(now - sync_interval_nt),
|
|
(long long int)(old_timestamp - now + sync_interval_nt)));
|
|
|
|
if (old_timestamp > now){
|
|
DEBUG(0, ("lastLogonTimestamp is in the future! (%lld > %lld)\n",
|
|
(long long int)old_timestamp, (long long int)now));
|
|
/* then what? */
|
|
|
|
} else if (old_timestamp < now - sync_interval_nt){
|
|
DEBUG(5, ("updating lastLogonTimestamp to %lld\n",
|
|
(long long int)now));
|
|
|
|
/* The time has come to update lastLogonTimestamp */
|
|
ret = samdb_msg_add_int64(sam_ctx, msg_mod, msg_mod,
|
|
"lastLogonTimestamp", now);
|
|
|
|
if (ret != LDB_SUCCESS) {
|
|
TALLOC_FREE(mem_ctx);
|
|
return NT_STATUS_NO_MEMORY;
|
|
}
|
|
}
|
|
TALLOC_FREE(mem_ctx);
|
|
return NT_STATUS_OK;
|
|
}
|
|
|
|
/****************************************************************************
|
|
Look for the specified user in the sam, return ldb result structures
|
|
****************************************************************************/
|
|
|
|
NTSTATUS authsam_search_account(TALLOC_CTX *mem_ctx, struct ldb_context *sam_ctx,
|
|
const char *account_name,
|
|
struct ldb_dn *domain_dn,
|
|
struct ldb_message **ret_msg)
|
|
{
|
|
int ret;
|
|
|
|
/* pull the user attributes */
|
|
ret = dsdb_search_one(sam_ctx, mem_ctx, ret_msg, domain_dn, LDB_SCOPE_SUBTREE,
|
|
user_attrs,
|
|
DSDB_SEARCH_SHOW_EXTENDED_DN,
|
|
"(&(sAMAccountName=%s)(objectclass=user))",
|
|
ldb_binary_encode_string(mem_ctx, account_name));
|
|
if (ret == LDB_ERR_NO_SUCH_OBJECT) {
|
|
DEBUG(3,("sam_search_user: Couldn't find user [%s] in samdb, under %s\n",
|
|
account_name, ldb_dn_get_linearized(domain_dn)));
|
|
return NT_STATUS_NO_SUCH_USER;
|
|
}
|
|
if (ret != LDB_SUCCESS) {
|
|
return NT_STATUS_INTERNAL_DB_CORRUPTION;
|
|
}
|
|
|
|
return NT_STATUS_OK;
|
|
}
|
|
|
|
|
|
/* Reset the badPwdCount to zero and update the lastLogon time. */
|
|
NTSTATUS authsam_logon_success_accounting(struct ldb_context *sam_ctx,
|
|
const struct ldb_message *msg,
|
|
struct ldb_dn *domain_dn,
|
|
bool interactive_or_kerberos,
|
|
struct netr_SendToSamBase **send_to_sam)
|
|
{
|
|
int ret;
|
|
NTSTATUS status;
|
|
int badPwdCount;
|
|
int dbBadPwdCount;
|
|
int64_t lockoutTime;
|
|
struct ldb_message *msg_mod;
|
|
TALLOC_CTX *mem_ctx;
|
|
struct timeval tv_now;
|
|
NTTIME now;
|
|
NTTIME lastLogonTimestamp;
|
|
bool am_rodc = false;
|
|
|
|
mem_ctx = talloc_new(msg);
|
|
if (mem_ctx == NULL) {
|
|
return NT_STATUS_NO_MEMORY;
|
|
}
|
|
|
|
lockoutTime = ldb_msg_find_attr_as_int64(msg, "lockoutTime", 0);
|
|
dbBadPwdCount = ldb_msg_find_attr_as_int(msg, "badPwdCount", 0);
|
|
if (interactive_or_kerberos) {
|
|
badPwdCount = dbBadPwdCount;
|
|
} else {
|
|
badPwdCount = samdb_result_effective_badPwdCount(sam_ctx, mem_ctx,
|
|
domain_dn, msg);
|
|
}
|
|
lastLogonTimestamp =
|
|
ldb_msg_find_attr_as_int64(msg, "lastLogonTimestamp", 0);
|
|
|
|
DEBUG(5, ("lastLogonTimestamp is %lld\n",
|
|
(long long int)lastLogonTimestamp));
|
|
|
|
msg_mod = ldb_msg_new(mem_ctx);
|
|
if (msg_mod == NULL) {
|
|
TALLOC_FREE(mem_ctx);
|
|
return NT_STATUS_NO_MEMORY;
|
|
}
|
|
msg_mod->dn = msg->dn;
|
|
|
|
if (lockoutTime != 0) {
|
|
/*
|
|
* This implies "badPwdCount" = 0, see samldb_lockout_time()
|
|
*/
|
|
ret = samdb_msg_add_int(sam_ctx, msg_mod, msg_mod, "lockoutTime", 0);
|
|
if (ret != LDB_SUCCESS) {
|
|
TALLOC_FREE(mem_ctx);
|
|
return NT_STATUS_NO_MEMORY;
|
|
}
|
|
} else if (badPwdCount != 0) {
|
|
ret = samdb_msg_add_int(sam_ctx, msg_mod, msg_mod, "badPwdCount", 0);
|
|
if (ret != LDB_SUCCESS) {
|
|
TALLOC_FREE(mem_ctx);
|
|
return NT_STATUS_NO_MEMORY;
|
|
}
|
|
}
|
|
|
|
tv_now = timeval_current();
|
|
now = timeval_to_nttime(&tv_now);
|
|
|
|
if (interactive_or_kerberos ||
|
|
(badPwdCount != 0 && lockoutTime == 0)) {
|
|
ret = samdb_msg_add_int64(sam_ctx, msg_mod, msg_mod,
|
|
"lastLogon", now);
|
|
if (ret != LDB_SUCCESS) {
|
|
TALLOC_FREE(mem_ctx);
|
|
return NT_STATUS_NO_MEMORY;
|
|
}
|
|
}
|
|
|
|
if (interactive_or_kerberos) {
|
|
int logonCount;
|
|
|
|
logonCount = ldb_msg_find_attr_as_int(msg, "logonCount", 0);
|
|
|
|
logonCount += 1;
|
|
|
|
ret = samdb_msg_add_int(sam_ctx, msg_mod, msg_mod,
|
|
"logonCount", logonCount);
|
|
if (ret != LDB_SUCCESS) {
|
|
TALLOC_FREE(mem_ctx);
|
|
return NT_STATUS_NO_MEMORY;
|
|
}
|
|
} else {
|
|
/* Set an unset logonCount to 0 on first successful login */
|
|
if (ldb_msg_find_ldb_val(msg, "logonCount") == NULL) {
|
|
ret = samdb_msg_add_int(sam_ctx, msg_mod, msg_mod,
|
|
"logonCount", 0);
|
|
if (ret != LDB_SUCCESS) {
|
|
TALLOC_FREE(mem_ctx);
|
|
return NT_STATUS_NO_MEMORY;
|
|
}
|
|
}
|
|
}
|
|
|
|
ret = samdb_rodc(sam_ctx, &am_rodc);
|
|
if (ret != LDB_SUCCESS) {
|
|
TALLOC_FREE(mem_ctx);
|
|
return NT_STATUS_INTERNAL_ERROR;
|
|
}
|
|
|
|
if (!am_rodc) {
|
|
status = authsam_update_lastlogon_timestamp(sam_ctx, msg_mod, domain_dn,
|
|
lastLogonTimestamp, now);
|
|
if (!NT_STATUS_IS_OK(status)) {
|
|
TALLOC_FREE(mem_ctx);
|
|
return NT_STATUS_NO_MEMORY;
|
|
}
|
|
} else {
|
|
/* Perform the (async) SendToSAM calls for MS-SAMS */
|
|
if (dbBadPwdCount != 0 && send_to_sam != NULL) {
|
|
struct netr_SendToSamBase *base_msg;
|
|
struct GUID guid = samdb_result_guid(msg, "objectGUID");
|
|
base_msg = talloc_zero(msg, struct netr_SendToSamBase);
|
|
|
|
base_msg->message_type = SendToSamResetBadPasswordCount;
|
|
base_msg->message_size = 16;
|
|
base_msg->message.reset_bad_password.guid = guid;
|
|
*send_to_sam = base_msg;
|
|
}
|
|
}
|
|
|
|
if (msg_mod->num_elements > 0) {
|
|
unsigned int i;
|
|
struct ldb_request *req;
|
|
|
|
/* mark all the message elements as LDB_FLAG_MOD_REPLACE */
|
|
for (i=0;i<msg_mod->num_elements;i++) {
|
|
msg_mod->elements[i].flags = LDB_FLAG_MOD_REPLACE;
|
|
}
|
|
|
|
ret = ldb_build_mod_req(&req, sam_ctx, sam_ctx,
|
|
msg_mod,
|
|
NULL,
|
|
NULL,
|
|
ldb_op_default_callback,
|
|
NULL);
|
|
if (ret != LDB_SUCCESS) {
|
|
goto done;
|
|
}
|
|
|
|
ret = ldb_request_add_control(req,
|
|
DSDB_CONTROL_FORCE_RODC_LOCAL_CHANGE,
|
|
false, NULL);
|
|
if (ret != LDB_SUCCESS) {
|
|
talloc_free(req);
|
|
goto done;
|
|
}
|
|
|
|
ret = dsdb_autotransaction_request(sam_ctx, req);
|
|
talloc_free(req);
|
|
}
|
|
|
|
done:
|
|
if (ret != LDB_SUCCESS) {
|
|
DEBUG(0, ("Failed to set badPwdCount and lockoutTime "
|
|
"to 0 and/or lastlogon to now (%lld) "
|
|
"%s: %s\n", (long long int)now,
|
|
ldb_dn_get_linearized(msg_mod->dn),
|
|
ldb_errstring(sam_ctx)));
|
|
TALLOC_FREE(mem_ctx);
|
|
return NT_STATUS_INTERNAL_ERROR;
|
|
}
|
|
|
|
TALLOC_FREE(mem_ctx);
|
|
return NT_STATUS_OK;
|
|
}
|