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 * Copyright (c) 1999, 2021, Oracle and/or its affiliates. All rights reserved.
 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
 *
 * This code is free software; you can redistribute it and/or modify it
 * under the terms of the GNU General Public License version 2 only, as
 * published by the Free Software Foundation.  Oracle designates this
 * particular file as subject to the "Classpath" exception as provided
 * by Oracle in the LICENSE file that accompanied this code.
 *
 * This code is distributed in the hope that it will be useful, but WITHOUT
 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
 * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
 * version 2 for more details (a copy is included in the LICENSE file that
 * accompanied this code).
 *
 * You should have received a copy of the GNU General Public License version
 * 2 along with this work; if not, write to the Free Software Foundation,
 * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
 *
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package com.sun.jndi.ldap;

import java.security.AccessControlContext;
import java.security.AccessController;
import java.security.PrivilegedActionException;
import java.security.PrivilegedExceptionAction;
import java.util.Vector;
import javax.naming.*;
import javax.naming.directory.*;
import javax.naming.ldap.Control;
import javax.naming.spi.*;

import com.sun.jndi.toolkit.ctx.Continuation;

final class LdapBindingEnumeration
        extends AbstractLdapNamingEnumeration<Binding> {

    @SuppressWarnings("removal")
    private final AccessControlContext acc = AccessController.getContext();

    LdapBindingEnumeration(LdapCtx homeCtx, LdapResult answer, Name remain,
        Continuation cont) throws NamingException
    {
        super(homeCtx, answer, remain, cont);
    }

    @SuppressWarnings("removal")
    @Override
    protected Binding
      createItem(String dn, Attributes attrs, Vector<Control> respCtls)
        throws NamingException {

        Object obj = null;
        String atom = getAtom(dn);

        if (attrs.get(Obj.JAVA_ATTRIBUTES[Obj.CLASSNAME]) != null) {
            // serialized object or object reference
            try {
                PrivilegedExceptionAction<Object> pa = () -> Obj.decodeObject(attrs);
                obj = AccessController.doPrivileged(pa, acc);
            } catch (PrivilegedActionException e) {
                throw (NamingException)e.getException();
            }
        }
        if (obj == null) {
            // DirContext object
            obj = new LdapCtx(homeCtx, dn);
        }

        CompositeName cn = new CompositeName();
        cn.add(atom);

        try {
            obj = DirectoryManager.getObjectInstance(obj, cn, homeCtx,
                homeCtx.envprops, attrs);

        } catch (NamingException e) {
            throw e;

        } catch (Exception e) {
            NamingException ne =
                new NamingException(
                        "problem generating object using object factory");
            ne.setRootCause(e);
            throw ne;
        }

        Binding binding;
        if (respCtls != null) {
           binding = new BindingWithControls(cn.toString(), obj,
                                homeCtx.convertControls(respCtls));
        } else {
            binding = new Binding(cn.toString(), obj);
        }
        binding.setNameInNamespace(dn);
        return binding;
    }

    @Override
    protected AbstractLdapNamingEnumeration<? extends NameClassPair> getReferredResults(
            LdapReferralContext refCtx) throws NamingException{
        // repeat the original operation at the new context
        return (AbstractLdapNamingEnumeration<? extends NameClassPair>)refCtx.listBindings(listArg);
    }
}
