Adding upstream version 2.4.47+dfsg.upstream/2.4.47+dfsgupstream

Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>

1 files changed, 166 insertions, 0 deletions

diff --git a/servers/slapd/back-bdb/bind.c b/servers/slapd/back-bdb/bind.c
new file mode 100644
index 0000000..82ec663
--- /dev/null
+++ b/servers/slapd/back-bdb/bind.c
@@ -0,0 +1,166 @@
+/* bind.c - bdb backend bind routine */
+/* $OpenLDAP$ */
+/* This work is part of OpenLDAP Software <http://www.openldap.org/>.
+ *
+ * Copyright 2000-2018 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-bdb.h"
+
+int
+bdb_bind( Operation *op, SlapReply *rs )
+{
+	struct bdb_info *bdb = (struct bdb_info *) op->o_bd->be_private;
+	Entry		*e;
+	Attribute	*a;
+	EntryInfo	*ei;
+
+	AttributeDescription *password = slap_schema.si_ad_userPassword;
+
+	DB_TXN		*rtxn;
+	DB_LOCK		lock;
+
+	Debug( LDAP_DEBUG_ARGS,
+		"==> " LDAP_XSTRING(bdb_bind) ": dn: %s\n",
+		op->o_req_dn.bv_val, 0, 0);
+
+	/* 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 = bdb_reader_get(op, bdb->bi_dbenv, &rtxn);
+	switch(rs->sr_err) {
+	case 0:
+		break;
+	default:
+		rs->sr_text = "internal error";
+		send_ldap_result( op, rs );
+		return rs->sr_err;
+	}
+
+dn2entry_retry:
+	/* get entry with reader lock */
+	rs->sr_err = bdb_dn2entry( op, rtxn, &op->o_req_ndn, &ei, 1,
+		&lock );
+
+	switch(rs->sr_err) {
+	case DB_NOTFOUND:
+	case 0:
+		break;
+	case LDAP_BUSY:
+		send_ldap_error( op, rs, LDAP_BUSY, "ldap_server_busy" );
+		return LDAP_BUSY;
+	case DB_LOCK_DEADLOCK:
+	case DB_LOCK_NOTGRANTED:
+		goto dn2entry_retry;
+	default:
+		send_ldap_error( op, rs, LDAP_OTHER, "internal error" );
+		return rs->sr_err;
+	}
+
+	e = ei->bei_e;
+	if ( rs->sr_err == DB_NOTFOUND ) {
+		if( e != NULL ) {
+			bdb_cache_return_entry_r( bdb, e, &lock );
+			e = NULL;
+		}
+
+		rs->sr_err = LDAP_INVALID_CREDENTIALS;
+		send_ldap_result( op, rs );
+
+		return rs->sr_err;
+	}
+
+	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", 0,
+			0, 0 );
+		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", 0, 0, 0 );
+		rs->sr_err = LDAP_INVALID_CREDENTIALS;
+		goto done;
+	}
+
+	if ( is_entry_referral( e ) ) {
+		Debug( LDAP_DEBUG_TRACE, "entry is referral\n", 0,
+			0, 0 );
+		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:
+	/* free entry and reader lock */
+	if( e != NULL ) {
+		bdb_cache_return_entry_r( bdb, e, &lock );
+	}
+
+	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;
+}