org.jivesoftware.smackx.jid_prep.JidPrepManager Maven / Gradle / Ivy

Go to download

Show more of this group Show more artifacts with this name
Show all versions of smack-experimental Show documentation

Smack experimental extensions. Classes and methods for XEPs that are in status 'experimental' or that should otherwise carefully considered for deployment. The API may change even between patch versions.

There is a newer version: 4.5.0-beta5

Show newest version

/**
 *
 * Copyright 2019 Florian Schmaus
 *
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 *
 *     http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */
package org.jivesoftware.smackx.jid_prep;

import java.util.Map;
import java.util.WeakHashMap;

import org.jivesoftware.smack.Manager;
import org.jivesoftware.smack.SmackException.NoResponseException;
import org.jivesoftware.smack.SmackException.NotConnectedException;
import org.jivesoftware.smack.XMPPConnection;
import org.jivesoftware.smack.XMPPException.XMPPErrorException;
import org.jivesoftware.smack.packet.StanzaError;

import org.jivesoftware.smackx.disco.ServiceDiscoveryManager;
import org.jivesoftware.smackx.jid_prep.element.JidPrepIq;

import org.jxmpp.jid.DomainBareJid;
import org.jxmpp.jid.Jid;

public class JidPrepManager extends Manager {

    public static final String NAMESPACE = JidPrepIq.NAMESPACE;

    private static final Map INSTANCES = new WeakHashMap<>();

    private final ServiceDiscoveryManager serviceDiscoveryManager;

    public static synchronized JidPrepManager getInstanceFor(XMPPConnection connection) {
        JidPrepManager manager = INSTANCES.get(connection);
        if (manager == null) {
            manager = new JidPrepManager(connection);
            INSTANCES.put(connection, manager);
        }
        return manager;
    }

    public JidPrepManager(XMPPConnection connection) {
        super(connection);

        serviceDiscoveryManager = ServiceDiscoveryManager.getInstanceFor(connection);
    }

    public String requestJidPrep(String jidToBePrepped)
                    throws NoResponseException, XMPPErrorException, NotConnectedException, InterruptedException {
        DomainBareJid serviceAddress = serviceDiscoveryManager.findService(NAMESPACE, true);
        return requestJidPrep(serviceAddress, jidToBePrepped);
    }

    public String requestJidPrep(Jid jidPrepService, String jidToBePrepped)
                    throws NoResponseException, NotConnectedException, InterruptedException, XMPPErrorException {
        JidPrepIq jidPrepRequest = new JidPrepIq(jidToBePrepped);
        jidPrepRequest.setTo(jidPrepService);

        JidPrepIq jidPrepResponse;
        try {
            jidPrepResponse = connection().sendIqRequestAndWaitForResponse(jidPrepRequest);
        } catch (XMPPErrorException e) {
            StanzaError stanzaError = e.getStanzaError();
            if (stanzaError.getCondition() == StanzaError.Condition.jid_malformed) {
                // jid-malformed is, sadly, returned if the jid can not be normalized. This means we can not distinguish
                // if the error is returned because e.g. the IQ's 'to' address was malformed (c.f. RFC 6120 § 8.3.3.8)
                // or if the JID to prep was malformed. Assume the later is the case and return 'null'.
                return null;
            }

            throw e;
        }

        return jidPrepResponse.getJid();
    }

    public boolean isSupported(Jid jid)
                    throws NoResponseException, XMPPErrorException, NotConnectedException, InterruptedException {
        return serviceDiscoveryManager.supportsFeature(jid, NAMESPACE);
    }
}