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s4-kdc_kpasswd: split out some code to a KPASSWD_GLUE subsystem.
This can then be easier shared with MIT's kadmin services for kpasswd services. Guenther Signed-off-by: Günther Deschner <gd@samba.org> Reviewed-by: Alexander Bokovoy <ab@samba.org>
This commit is contained in:
Günther Deschner
Andreas Schneider
parent
a7705ad060
commit
ae607c0d05
112
source4/kdc/kpasswd_glue.c
Normal file
112
source4/kdc/kpasswd_glue.c
Normal file
@ -0,0 +1,112 @@
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/*
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Unix SMB/CIFS implementation.
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kpasswd Server implementation
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Copyright (C) Andrew Bartlett <abartlet@samba.org> 2005
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Copyright (C) Andrew Tridgell 2005
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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 "dsdb/samdb/samdb.h"
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#include "../lib/util/util_ldb.h"
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#include "libcli/security/security.h"
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#include "dsdb/common/util.h"
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#include "auth/auth.h"
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#include "kdc/kpasswd_glue.h"
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/*
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A user password change
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Return true if there is a valid error packet (or success) formed in
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the error_blob
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*/
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NTSTATUS samdb_kpasswd_change_password(TALLOC_CTX *mem_ctx,
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struct loadparm_context *lp_ctx,
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struct tevent_context *event_ctx,
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struct ldb_context *samdb,
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struct auth_session_info *session_info,
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const DATA_BLOB *password,
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enum samPwdChangeReason *reject_reason,
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struct samr_DomInfo1 **dominfo,
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const char **error_string,
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NTSTATUS *result)
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{
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struct samr_Password *oldLmHash, *oldNtHash;
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const char * const attrs[] = { "dBCSPwd", "unicodePwd", NULL };
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struct ldb_message *msg;
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NTSTATUS status;
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int ret;
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/* Fetch the old hashes to get the old password in order to perform
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* the password change operation. Naturally it would be much better to
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* have a password hash from an authentication around but this doesn't
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* seem to be the case here. */
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ret = dsdb_search_one(samdb, mem_ctx, &msg, ldb_get_default_basedn(samdb),
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LDB_SCOPE_SUBTREE,
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attrs,
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DSDB_SEARCH_NO_GLOBAL_CATALOG,
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"(&(objectClass=user)(sAMAccountName=%s))",
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session_info->info->account_name);
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if (ret != LDB_SUCCESS) {
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*error_string = "No such user when changing password";
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return NT_STATUS_NO_SUCH_USER;
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}
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/*
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* No need to check for password lockout here, the KDC will
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* have done that when issuing the ticket, which is not based
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* on the user's password
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*/
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status = samdb_result_passwords_no_lockout(mem_ctx, lp_ctx, msg,
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&oldLmHash, &oldNtHash);
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if (!NT_STATUS_IS_OK(status)) {
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*error_string = "Not permitted to change password";
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return NT_STATUS_ACCESS_DENIED;
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}
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/* Start a SAM with user privileges for the password change */
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samdb = samdb_connect(mem_ctx, event_ctx, lp_ctx,
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session_info, 0);
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if (!samdb) {
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*error_string = "Failed to open samdb";
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return NT_STATUS_ACCESS_DENIED;
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}
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DEBUG(3, ("Changing password of %s\\%s (%s)\n",
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session_info->info->domain_name,
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session_info->info->account_name,
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dom_sid_string(mem_ctx, &session_info->security_token->sids[PRIMARY_USER_SID_INDEX])));
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/* Performs the password change */
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status = samdb_set_password_sid(samdb,
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mem_ctx,
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&session_info->security_token->sids[PRIMARY_USER_SID_INDEX],
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NULL,
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password,
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NULL,
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NULL,
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oldLmHash,
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oldNtHash, /* this is a user password change */
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reject_reason,
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dominfo);
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if (!NT_STATUS_IS_OK(status)) {
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*error_string = nt_errstr(status);
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}
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*result = status;
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return NT_STATUS_OK;
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}
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32
source4/kdc/kpasswd_glue.h
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32
source4/kdc/kpasswd_glue.h
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@ -0,0 +1,32 @@
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/*
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Unix SMB/CIFS implementation.
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kpasswd Server implementation
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Copyright (C) Andrew Bartlett <abartlet@samba.org> 2005
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Copyright (C) Andrew Tridgell 2005
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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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NTSTATUS samdb_kpasswd_change_password(TALLOC_CTX *mem_ctx,
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struct loadparm_context *lp_ctx,
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struct tevent_context *event_ctx,
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struct ldb_context *samdb,
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struct auth_session_info *session_info,
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const DATA_BLOB *password,
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enum samPwdChangeReason *reject_reason,
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struct samr_DomInfo1 **dominfo,
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const char **error_string,
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NTSTATUS *result);
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@ -31,6 +31,7 @@
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#include "param/param.h"
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#include "kdc/kdc-glue.h"
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#include "dsdb/common/util.h"
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#include "kdc/kpasswd_glue.h"
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/* Return true if there is a valid error packet formed in the error_blob */
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static bool kpasswdd_make_error_reply(struct kdc_server *kdc,
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@ -156,73 +157,35 @@ static bool kpasswdd_change_password(struct kdc_server *kdc,
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DATA_BLOB *reply)
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{
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NTSTATUS status;
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NTSTATUS result = NT_STATUS_UNSUCCESSFUL;
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enum samPwdChangeReason reject_reason;
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struct samr_DomInfo1 *dominfo;
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struct samr_Password *oldLmHash, *oldNtHash;
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struct ldb_context *samdb;
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const char * const attrs[] = { "dBCSPwd", "unicodePwd", NULL };
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struct ldb_message *msg;
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int ret;
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const char *error_string;
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/* Fetch the old hashes to get the old password in order to perform
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* the password change operation. Naturally it would be much better to
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* have a password hash from an authentication around but this doesn't
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* seem to be the case here. */
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ret = dsdb_search_one(kdc->samdb, mem_ctx, &msg, ldb_get_default_basedn(kdc->samdb),
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LDB_SCOPE_SUBTREE,
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attrs,
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DSDB_SEARCH_NO_GLOBAL_CATALOG,
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"(&(objectClass=user)(sAMAccountName=%s))",
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session_info->info->account_name);
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if (ret != LDB_SUCCESS) {
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return kpasswdd_make_error_reply(kdc, mem_ctx,
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KRB5_KPASSWD_ACCESSDENIED,
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"No such user when changing password",
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reply);
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}
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/*
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* No need to check for password lockout here, the KDC will
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* have done that when issuing the ticket, which is not based
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* on the user's password
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*/
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status = samdb_result_passwords_no_lockout(mem_ctx, kdc->task->lp_ctx, msg,
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&oldLmHash, &oldNtHash);
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status = samdb_kpasswd_change_password(mem_ctx,
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kdc->task->lp_ctx,
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kdc->task->event_ctx,
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kdc->samdb,
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session_info,
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password,
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&reject_reason,
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&dominfo,
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&error_string,
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&result);
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if (!NT_STATUS_IS_OK(status)) {
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return kpasswdd_make_error_reply(kdc, mem_ctx,
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KRB5_KPASSWD_ACCESSDENIED,
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"Not permitted to change password",
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reply);
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return kpasswdd_make_error_reply(kdc,
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mem_ctx,
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KRB5_KPASSWD_ACCESSDENIED,
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error_string,
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reply);
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}
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/* Start a SAM with user privileges for the password change */
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samdb = samdb_connect(mem_ctx, kdc->task->event_ctx, kdc->task->lp_ctx,
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session_info, 0);
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if (!samdb) {
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return kpasswdd_make_error_reply(kdc, mem_ctx,
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KRB5_KPASSWD_HARDERROR,
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"Failed to open samdb",
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reply);
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}
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DEBUG(3, ("Changing password of %s\\%s (%s)\n",
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session_info->info->domain_name,
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session_info->info->account_name,
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dom_sid_string(mem_ctx, &session_info->security_token->sids[PRIMARY_USER_SID_INDEX])));
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/* Performs the password change */
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status = samdb_set_password_sid(samdb, mem_ctx,
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&session_info->security_token->sids[PRIMARY_USER_SID_INDEX],
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NULL, password, NULL, NULL,
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oldLmHash, oldNtHash, /* this is a user password change */
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&reject_reason,
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&dominfo);
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return kpasswd_make_pwchange_reply(kdc, mem_ctx,
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status,
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return kpasswd_make_pwchange_reply(kdc,
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mem_ctx,
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result,
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reject_reason,
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dominfo,
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reply);
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}
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static bool kpasswd_process_request(struct kdc_server *kdc,
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@ -21,10 +21,10 @@ bld.SAMBA_MODULE('service_kdc',
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samba_server_gensec
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PAC_GLUE
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KDC-GLUE
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KPASSWD_GLUE
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''',
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internal_module=False)
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bld.SAMBA_LIBRARY('HDB_SAMBA4',
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source='hdb-samba4.c hdb-samba4-plugin.c',
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deps='ldb auth4_sam auth_sam_reply samba-credentials hdb db-glue samba-hostconfig com_err',
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@ -79,6 +79,11 @@ bld.SAMBA_LIBRARY('db-glue',
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includes=kdc_include,
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)
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bld.SAMBA_SUBSYSTEM('KPASSWD_GLUE',
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source='kpasswd_glue.c',
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includes=kdc_include,
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deps='ldb com_err')
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bld.SAMBA_SUBSYSTEM('MIT_SAMBA',
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source='mit_samba.c',
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deps='''
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