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-rw-r--r--servers/slapd/back-mdb/bind.c156
1 files changed, 156 insertions, 0 deletions
diff --git a/servers/slapd/back-mdb/bind.c b/servers/slapd/back-mdb/bind.c
new file mode 100644
index 0000000..6df3f2d
--- /dev/null
+++ b/servers/slapd/back-mdb/bind.c
@@ -0,0 +1,156 @@
+/* bind.c - mdb backend bind routine */
+/* $OpenLDAP$ */
+/* This work is part of OpenLDAP Software <http://www.openldap.org/>.
+ *
+ * Copyright 2000-2022 The OpenLDAP Foundation.
+ * 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>.
+ */
+
+#include "portable.h"
+
+#include <stdio.h>
+#include <ac/string.h>
+#include <ac/unistd.h>
+
+#include "back-mdb.h"
+
+int
+mdb_bind( Operation *op, SlapReply *rs )
+{
+ struct mdb_info *mdb = (struct mdb_info *) op->o_bd->be_private;
+ Entry *e;
+ Attribute *a;
+
+ AttributeDescription *password = slap_schema.si_ad_userPassword;
+
+ MDB_txn *rtxn;
+ mdb_op_info opinfo = {{{0}}}, *moi = &opinfo;
+
+ Debug( LDAP_DEBUG_ARGS,
+ "==> " LDAP_XSTRING(mdb_bind) ": dn: %s\n",
+ op->o_req_dn.bv_val );
+
+ /* allow noauth binds */
+ switch ( be_rootdn_bind( op, NULL ) ) {
+ case LDAP_SUCCESS:
+ /* frontend will send result */
+ return rs->sr_err = LDAP_SUCCESS;
+
+ default:
+ /* give the database a chance */
+ /* NOTE: this behavior departs from that of other backends,
+ * since the others, in case of password checking failure
+ * do not give the database a chance. If an entry with
+ * rootdn's name does not exist in the database the result
+ * will be the same. See ITS#4962 for discussion. */
+ break;
+ }
+
+ rs->sr_err = mdb_opinfo_get(op, mdb, 1, &moi);
+ switch(rs->sr_err) {
+ case 0:
+ break;
+ default:
+ rs->sr_text = "internal error";
+ send_ldap_result( op, rs );
+ return rs->sr_err;
+ }
+
+ rtxn = moi->moi_txn;
+
+ /* get entry with reader lock */
+ rs->sr_err = mdb_dn2entry( op, rtxn, NULL, &op->o_req_ndn, &e, NULL, 0 );
+
+ switch(rs->sr_err) {
+ case MDB_NOTFOUND:
+ rs->sr_err = LDAP_INVALID_CREDENTIALS;
+ goto done;
+ case 0:
+ break;
+ case LDAP_BUSY:
+ rs->sr_text = "ldap_server_busy";
+ goto done;
+ default:
+ rs->sr_err = LDAP_OTHER;
+ rs->sr_text = "internal error";
+ goto done;
+ }
+
+ ber_dupbv( &op->oq_bind.rb_edn, &e->e_name );
+
+ /* check for deleted */
+ if ( is_entry_subentry( e ) ) {
+ /* entry is an subentry, don't allow bind */
+ Debug( LDAP_DEBUG_TRACE, "entry is subentry\n" );
+ rs->sr_err = LDAP_INVALID_CREDENTIALS;
+ goto done;
+ }
+
+ if ( is_entry_alias( e ) ) {
+ /* entry is an alias, don't allow bind */
+ Debug( LDAP_DEBUG_TRACE, "entry is alias\n" );
+ rs->sr_err = LDAP_INVALID_CREDENTIALS;
+ goto done;
+ }
+
+ if ( is_entry_referral( e ) ) {
+ Debug( LDAP_DEBUG_TRACE, "entry is referral\n" );
+ rs->sr_err = LDAP_INVALID_CREDENTIALS;
+ goto done;
+ }
+
+ switch ( op->oq_bind.rb_method ) {
+ case LDAP_AUTH_SIMPLE:
+ a = attr_find( e->e_attrs, password );
+ if ( a == NULL ) {
+ rs->sr_err = LDAP_INVALID_CREDENTIALS;
+ goto done;
+ }
+
+ if ( slap_passwd_check( op, e, a, &op->oq_bind.rb_cred,
+ &rs->sr_text ) != 0 )
+ {
+ /* failure; stop front end from sending result */
+ rs->sr_err = LDAP_INVALID_CREDENTIALS;
+ goto done;
+ }
+
+ rs->sr_err = 0;
+ break;
+
+ default:
+ assert( 0 ); /* should not be reachable */
+ rs->sr_err = LDAP_STRONG_AUTH_NOT_SUPPORTED;
+ rs->sr_text = "authentication method not supported";
+ }
+
+done:
+ if ( moi == &opinfo ) {
+ mdb_txn_reset( moi->moi_txn );
+ LDAP_SLIST_REMOVE( &op->o_extra, &moi->moi_oe, OpExtra, oe_next );
+ } else {
+ moi->moi_ref--;
+ }
+ /* free entry and reader lock */
+ if( e != NULL ) {
+ mdb_entry_return( op, e );
+ }
+
+ if ( rs->sr_err ) {
+ send_ldap_result( op, rs );
+ if ( rs->sr_ref ) {
+ ber_bvarray_free( rs->sr_ref );
+ rs->sr_ref = NULL;
+ }
+ }
+ /* front end will send result on success (rs->sr_err==0) */
+ return rs->sr_err;
+}