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diff --git a/servers/slapd/back-sql/bind.c b/servers/slapd/back-sql/bind.c
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+/* $OpenLDAP$ */
+/* This work is part of OpenLDAP Software <http://www.openldap.org/>.
+ *
+ * Copyright 1999-2021 The OpenLDAP Foundation.
+ * Portions Copyright 1999 Dmitry Kovalev.
+ * Portions Copyright 2002 Pierangelo Masarati.
+ * All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted only as authorized by the OpenLDAP
+ * Public License.
+ *
+ * A copy of this license is available in the file LICENSE in the
+ * top-level directory of the distribution or, alternatively, at
+ * <http://www.OpenLDAP.org/license.html>.
+ */
+/* ACKNOWLEDGEMENTS:
+ * This work was initially developed by Dmitry Kovalev for inclusion
+ * by OpenLDAP Software. Additional significant contributors include
+ * Pierangelo Masarati.
+ */
+
+#include "portable.h"
+
+#include <stdio.h>
+#include <sys/types.h>
+
+#include "slap.h"
+#include "proto-sql.h"
+
+int
+backsql_bind( Operation *op, SlapReply *rs )
+{
+ SQLHDBC dbh = SQL_NULL_HDBC;
+ Entry e = { 0 };
+ Attribute *a;
+ backsql_srch_info bsi = { 0 };
+ AttributeName anlist[2];
+ int rc;
+
+ Debug( LDAP_DEBUG_TRACE, "==>backsql_bind()\n", 0, 0, 0 );
+
+ switch ( be_rootdn_bind( op, rs ) ) {
+ case SLAP_CB_CONTINUE:
+ break;
+
+ default:
+ /* in case of success, front end will send result;
+ * otherwise, be_rootdn_bind() did */
+ Debug( LDAP_DEBUG_TRACE, "<==backsql_bind(%d)\n",
+ rs->sr_err, 0, 0 );
+ return rs->sr_err;
+ }
+
+ rs->sr_err = backsql_get_db_conn( op, &dbh );
+ if ( rs->sr_err != LDAP_SUCCESS ) {
+ Debug( LDAP_DEBUG_TRACE, "backsql_bind(): "
+ "could not get connection handle - exiting\n",
+ 0, 0, 0 );
+
+ rs->sr_text = ( rs->sr_err == LDAP_OTHER )
+ ? "SQL-backend error" : NULL;
+ goto error_return;
+ }
+
+ anlist[0].an_name = slap_schema.si_ad_userPassword->ad_cname;
+ anlist[0].an_desc = slap_schema.si_ad_userPassword;
+ anlist[1].an_name.bv_val = NULL;
+
+ bsi.bsi_e = &e;
+ rc = backsql_init_search( &bsi, &op->o_req_ndn, LDAP_SCOPE_BASE,
+ (time_t)(-1), NULL, dbh, op, rs, anlist,
+ BACKSQL_ISF_GET_ENTRY );
+ if ( rc != LDAP_SUCCESS ) {
+ Debug( LDAP_DEBUG_TRACE, "backsql_bind(): "
+ "could not retrieve bindDN ID - no such entry\n",
+ 0, 0, 0 );
+ rs->sr_err = LDAP_INVALID_CREDENTIALS;
+ goto error_return;
+ }
+
+ a = attr_find( e.e_attrs, slap_schema.si_ad_userPassword );
+ if ( a == NULL ) {
+ rs->sr_err = LDAP_INVALID_CREDENTIALS;
+ goto error_return;
+ }
+
+ if ( slap_passwd_check( op, &e, a, &op->oq_bind.rb_cred,
+ &rs->sr_text ) != 0 )
+ {
+ rs->sr_err = LDAP_INVALID_CREDENTIALS;
+ goto error_return;
+ }
+
+error_return:;
+ if ( !BER_BVISNULL( &bsi.bsi_base_id.eid_ndn ) ) {
+ (void)backsql_free_entryID( &bsi.bsi_base_id, 0, op->o_tmpmemctx );
+ }
+
+ if ( !BER_BVISNULL( &e.e_nname ) ) {
+ backsql_entry_clean( op, &e );
+ }
+
+ if ( bsi.bsi_attrs != NULL ) {
+ op->o_tmpfree( bsi.bsi_attrs, op->o_tmpmemctx );
+ }
+
+ if ( rs->sr_err != LDAP_SUCCESS ) {
+ send_ldap_result( op, rs );
+ }
+
+ Debug( LDAP_DEBUG_TRACE,"<==backsql_bind()\n", 0, 0, 0 );
+
+ return rs->sr_err;
+}
+