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Code Issues Releases Wiki Activity

SMACK-403 add support for

Browse source 
XEP-0297 Stanza Forwarding and XEP-0280 Message Carbons
and
XEP-0297: Stanza Forwarding implementation

This patch adds Forwarded.java, a class to wrap messages forwarded
from a different entity. A forwarded stanza contains of a Packet and
an optional timestamp.

WARNING: The current implementation only allows to forward Message
packets, as there is no universal way to parse a Packet from SMACK.

XEP-0280 Message Carbons implementation

This patch adds Carbon.java, a class to wrap the packet extension
defined in XEP-0280 to store copies of messages sent to or received
by a user to his other client(s).

The CarbonManager allows to register XEP-0280 support with the SDM,
to enable and disable the feature and to manipulate messages
accordingly.

Signed-Off-By: Georg Lukas <georg@op-co.de>

git-svn-id: http://svn.igniterealtime.org/svn/repos/smack/trunk@13411 b35dd754-fafc-0310-a699-88a17e54d16e
This commit is contained in:
Florian Schmaus 2013-01-28 09:38:02 +00:00 committed by flow
parent b9fe598129
commit 2a1f4e8376
5 changed files with 665 additions and 1 deletions
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19
build/resources/META-INF/smack.providers
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@ -640,4 +640,23 @@
<namespace>urn:xmpp:attention:0</namespace>
<className>org.jivesoftware.smackx.packet.AttentionExtension$Provider</className>
</extensionProvider>
<!-- XEP-0297 Stanza Forwarding -->
<extensionProvider>
<elementName>forwarded</elementName>
<namespace>urn:xmpp:forward:0</namespace>
<className>org.jivesoftware.smackx.packet.Forwarded$Provider</className>
</extensionProvider>
<!-- XEP-0280 Message Carbons -->
<extensionProvider>
<elementName>sent</elementName>
<namespace>urn:xmpp:carbons:2</namespace>
<className>org.jivesoftware.smackx.carbons.Carbon$Provider</className>
</extensionProvider>
<extensionProvider>
<elementName>received</elementName>
<namespace>urn:xmpp:carbons:2</namespace>
<className>org.jivesoftware.smackx.carbons.Carbon$Provider</className>
</extensionProvider>
</smackProviders>

139
source/org/jivesoftware/smackx/carbons/Carbon.java Normal file
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@ -0,0 +1,139 @@
/**
* Copyright 2013 Georg Lukas
*
* All rights reserved. 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.carbons;
import org.jivesoftware.smack.packet.Packet;
import org.jivesoftware.smack.packet.PacketExtension;
import org.jivesoftware.smack.provider.PacketExtensionProvider;
import org.jivesoftware.smack.util.PacketParserUtils;
import org.jivesoftware.smackx.forward.Forwarded;
import org.jivesoftware.smackx.packet.DelayInfo;
import org.jivesoftware.smackx.provider.DelayInfoProvider;
import org.xmlpull.v1.XmlPullParser;
/**
* Packet extension for XEP-0280: Message Carbons. This class implements
* the packet extension and a {@link PacketExtensionProvider} to parse
* message carbon copies from a packet. The extension
* <a href="http://xmpp.org/extensions/xep-0280.html">XEP-0280</a> is
* meant to synchronize a message flow to multiple presences of a user.
*
* <p>The {@link Carbon.Provider} must be registered in the
* <b>smack.properties</b> file for the elements <b>sent</b> and
* <b>received</b> with namespace <b>urn:xmpp:carbons:2</b></p> to be used.
*
* @author Georg Lukas
*/
public class Carbon implements PacketExtension {
public static final String NAMESPACE = "urn:xmpp:carbons:2";
private Direction dir;
private Forwarded fwd;
public Carbon(Direction dir, Forwarded fwd) {
this.dir = dir;
this.fwd = fwd;
}
/**
* get the direction (sent or received) of the carbon.
*
* @return the {@link Direction} of the carbon.
*/
public Direction getDirection() {
return dir;
}
/**
* get the forwarded packet.
*
* @return the {@link Forwarded} message contained in this Carbon.
*/
public Forwarded getForwarded() {
return fwd;
}
@Override
public String getElementName() {
return dir.toString();
}
@Override
public String getNamespace() {
return NAMESPACE;
}
@Override
public String toXML() {
StringBuilder buf = new StringBuilder();
buf.append("<").append(getElementName()).append(" xmlns=\"")
.append(getNamespace()).append("\">");
buf.append(fwd.toXML());
buf.append("</").append(getElementName()).append(">");
return buf.toString();
}
/**
* An enum to display the direction of a {@link Carbon} message.
*/
public static enum Direction {
received,
sent
}
public static class Provider implements PacketExtensionProvider {
public PacketExtension parseExtension(XmlPullParser parser) throws Exception {
Direction dir = Direction.valueOf(parser.getName());
Forwarded fwd = null;
boolean done = false;
while (!done) {
int eventType = parser.next();
if (eventType == XmlPullParser.START_TAG && parser.getName().equals("forwarded")) {
fwd = (Forwarded)new Forwarded.Provider().parseExtension(parser);
}
else if (eventType == XmlPullParser.END_TAG && dir == Direction.valueOf(parser.getName()))
done = true;
}
if (fwd == null)
throw new Exception("sent/received must contain exactly one <forwarded> tag");
return new Carbon(dir, fwd);
}
}
/**
* Packet extension indicating that a message may not be carbon-copied.
*/
public static class Private implements PacketExtension {
public static final String ELEMENT = "private";
public String getElementName() {
return ELEMENT;
}
public String getNamespace() {
return Carbon.NAMESPACE;
}
public String toXML() {
return "<" + ELEMENT + " xmlns=\"" + Carbon.NAMESPACE + "\"/>";
}
}
}

213
source/org/jivesoftware/smackx/carbons/CarbonManager.java Normal file
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@ -0,0 +1,213 @@
/**
* Copyright 2013 Georg Lukas
*
* All rights reserved. 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.carbons;
import java.util.Collections;
import java.util.Map;
import java.util.WeakHashMap;
import org.jivesoftware.smack.Connection;
import org.jivesoftware.smack.ConnectionCreationListener;
import org.jivesoftware.smack.PacketCollector;
import org.jivesoftware.smack.PacketListener;
import org.jivesoftware.smack.SmackConfiguration;
import org.jivesoftware.smack.XMPPException;
import org.jivesoftware.smack.filter.PacketIDFilter;
import org.jivesoftware.smack.packet.IQ;
import org.jivesoftware.smack.packet.Message;
import org.jivesoftware.smack.packet.Packet;
import org.jivesoftware.smackx.ServiceDiscoveryManager;
import org.jivesoftware.smackx.packet.DiscoverInfo;
/**
* Packet extension for XEP-0280: Message Carbons. This class implements
* the manager for registering {@link Carbon} support, enabling and disabling
* message carbons.
*
* You should call enableCarbons() before sending your first undirected
* presence.
*
* @author Georg Lukas
*/
public class CarbonManager {
private static Map<Connection, CarbonManager> instances =
Collections.synchronizedMap(new WeakHashMap<Connection, CarbonManager>());
static {
Connection.addConnectionCreationListener(new ConnectionCreationListener() {
public void connectionCreated(Connection connection) {
new CarbonManager(connection);
}
});
}
private Connection connection;
private volatile boolean enabled_state = false;
private CarbonManager(Connection connection) {
ServiceDiscoveryManager sdm = ServiceDiscoveryManager.getInstanceFor(connection);
sdm.addFeature(Carbon.NAMESPACE);
this.connection = connection;
instances.put(connection, this);
}
/**
* Obtain the CarbonManager responsible for a connection.
*
* @param connection the connection object.
*
* @return a CarbonManager instance
*/
public static CarbonManager getInstanceFor(Connection connection) {
CarbonManager carbonManager = instances.get(connection);
if (carbonManager == null) {
carbonManager = new CarbonManager(connection);
}
return carbonManager;
}
private IQ carbonsEnabledIQ(final boolean new_state) {
IQ setIQ = new IQ() {
public String getChildElementXML() {
return "<" + (new_state? "enable" : "disable") + " xmlns='" + Carbon.NAMESPACE + "'/>";
}
};
setIQ.setType(IQ.Type.SET);
return setIQ;
}
/**
* Returns true if XMPP Carbons are supported by the server.
*
* @return true if supported
*/
public boolean isSupportedByServer() {
try {
DiscoverInfo result = ServiceDiscoveryManager
.getInstanceFor(connection).discoverInfo(connection.getServiceName());
return result.containsFeature(Carbon.NAMESPACE);
}
catch (XMPPException e) {
return false;
}
}
/**
* Notify server to change the carbons state. This method returns
* immediately and changes the variable when the reply arrives.
*
* You should first check for support using isSupportedByServer().
*
* @param new_state whether carbons should be enabled or disabled
*/
public void sendCarbonsEnabled(final boolean new_state) {
IQ setIQ = carbonsEnabledIQ(new_state);
connection.addPacketListener(new PacketListener() {
public void processPacket(Packet packet) {
IQ result = (IQ)packet;
if (result.getType() == IQ.Type.RESULT) {
enabled_state = new_state;
}
connection.removePacketListener(this);
}
}, new PacketIDFilter(setIQ.getPacketID()));
connection.sendPacket(setIQ);
}
/**
* Notify server to change the carbons state. This method blocks
* some time until the server replies to the IQ and returns true on
* success.
*
* You should first check for support using isSupportedByServer().
*
* @param new_state whether carbons should be enabled or disabled
*
* @return true if the operation was successful
*/
public boolean setCarbonsEnabled(final boolean new_state) {
if (enabled_state == new_state)
return true;
IQ setIQ = carbonsEnabledIQ(new_state);
PacketCollector collector =
connection.createPacketCollector(new PacketIDFilter(setIQ.getPacketID()));
connection.sendPacket(setIQ);
IQ result = (IQ) collector.nextResult(SmackConfiguration.getPacketReplyTimeout());
collector.cancel();
if (result != null && result.getType() == IQ.Type.RESULT) {
enabled_state = new_state;
return true;
}
return false;
}
/**
* Helper method to enable carbons.
*
* @return true if the operation was successful
*/
public boolean enableCarbons() {
return setCarbonsEnabled(true);
}
/**
* Helper method to disable carbons.
*
* @return true if the operation was successful
*/
public boolean disableCarbons() {
return setCarbonsEnabled(false);
}
/**
* Check if carbons are enabled on this connection.
*/
public boolean getCarbonsEnabled() {
return this.enabled_state;
}
/**
* Obtain a Carbon from a message, if available.
*
* @param msg Message object to check for carbons
*
* @return a Carbon if available, null otherwise.
*/
public static Carbon getCarbon(Message msg) {
Carbon cc = (Carbon)msg.getExtension("received", Carbon.NAMESPACE);
if (cc == null)
cc = (Carbon)msg.getExtension("sent", Carbon.NAMESPACE);
return cc;
}
/**
* Mark a message as "private", so it will not be carbon-copied.
*
* @param msg Message object to mark private
*/
public static void disableCarbons(Message msg) {
msg.addExtension(new Carbon.Private());
}
}

125
source/org/jivesoftware/smackx/forward/Forwarded.java Normal file
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@ -0,0 +1,125 @@
/**
* Copyright 2013 Georg Lukas
*
* All rights reserved. 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.forward;
import org.jivesoftware.smack.packet.Packet;
import org.jivesoftware.smack.packet.PacketExtension;
import org.jivesoftware.smack.provider.PacketExtensionProvider;
import org.jivesoftware.smack.util.PacketParserUtils;
import org.jivesoftware.smackx.packet.DelayInfo;
import org.jivesoftware.smackx.provider.DelayInfoProvider;
import org.xmlpull.v1.XmlPullParser;
/**
* Packet extension for XEP-0297: Stanza Forwarding. This class implements
* the packet extension and a {@link PacketExtensionProvider} to parse
* forwarded messages from a packet. The extension
* <a href="http://xmpp.org/extensions/xep-0297.html">XEP-0297</a> is
* a prerequisite for XEP-0280 (Message Carbons).
*
* <p>The {@link Forwarded.Provider} must be registered in the
* <b>smack.properties</b> file for the element <b>forwarded</b> with
* namespace <b>urn:xmpp:forwarded:0</b></p> to be used.
*
* @author Georg Lukas
*/
public class Forwarded implements PacketExtension {
public static final String NAMESPACE = "urn:xmpp:forward:0";
public static final String ELEMENT_NAME = "forwarded";
private DelayInfo delay;
private Packet forwardedPacket;
/**
* Creates a new Forwarded packet extension.
*
* @param delay an optional {@link DelayInfo} timestamp of the packet.
* @param fwdPacket the packet that is forwarded (required).
*/
public Forwarded(DelayInfo delay, Packet fwdPacket) {
this.delay = delay;
this.forwardedPacket = fwdPacket;
}
@Override
public String getElementName() {
return ELEMENT_NAME;
}
@Override
public String getNamespace() {
return NAMESPACE;
}
@Override
public String toXML() {
StringBuilder buf = new StringBuilder();
buf.append("<").append(getElementName()).append(" xmlns=\"")
.append(getNamespace()).append("\">");
if (delay != null)
buf.append(delay.toXML());
buf.append(forwardedPacket.toXML());
buf.append("</").append(getElementName()).append(">");
return buf.toString();
}
/**
* get the packet forwarded by this stanza.
*
* @return the {@link Packet} instance (typically a message) that was forwarded.
*/
public Packet getForwardedPacket() {
return forwardedPacket;
}
/**
* get the timestamp of the forwarded packet.
*
* @return the {@link DelayInfo} representing the time when the original packet was sent. May be null.
*/
public DelayInfo getDelayInfo() {
return delay;
}
public static class Provider implements PacketExtensionProvider {
DelayInfoProvider dip = new DelayInfoProvider();
public PacketExtension parseExtension(XmlPullParser parser) throws Exception {
DelayInfo di = null;
Packet packet = null;
boolean done = false;
while (!done) {
int eventType = parser.next();
if (eventType == XmlPullParser.START_TAG) {
if (parser.getName().equals("delay"))
di = (DelayInfo)dip.parseExtension(parser);
else if (parser.getName().equals("message"))
packet = PacketParserUtils.parseMessage(parser);
else throw new Exception("Unsupported forwarded packet type: " + parser.getName());
}
else if (eventType == XmlPullParser.END_TAG && parser.getName().equals(ELEMENT_NAME))
done = true;
}
if (packet == null)
throw new Exception("forwarded extension must contain a packet");
return new Forwarded(di, packet);
}
}
}

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test-unit/org/jivesoftware/smackx/carbons/CarbonForwardedTest.java Normal file
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/**
* All rights reserved. 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.carbons;
import static org.junit.Assert.*;
import java.io.IOException;
import java.io.StringReader;
import java.text.SimpleDateFormat;
import java.util.Calendar;
import java.util.Date;
import java.util.GregorianCalendar;
import java.util.Properties;
import java.util.TimeZone;
import org.jivesoftware.smack.packet.Packet;
import org.jivesoftware.smackx.packet.DelayInfo;
import org.jivesoftware.smackx.packet.DelayInformation;
import org.jivesoftware.smackx.forward.Forwarded;
import org.junit.Test;
import org.xmlpull.mxp1.MXParser;
import org.xmlpull.v1.XmlPullParser;
import org.xmlpull.v1.XmlPullParserException;
import com.jamesmurty.utils.XMLBuilder;
public class CarbonForwardedTest {
private static Properties outputProperties = new Properties();
static {
outputProperties.put(javax.xml.transform.OutputKeys.OMIT_XML_DECLARATION, "yes");
}
@Test
public void forwardedTest() throws Exception {
XmlPullParser parser;
String control;
Forwarded fwd;
control = XMLBuilder.create("forwarded")
.a("xmlns", "urn:xmpp:forwarded:0")
.e("message")
.a("from", "romeo@montague.com")
.asString(outputProperties);
parser = getParser(control, "forwarded");
fwd = (Forwarded) new Forwarded.Provider().parseExtension(parser);
// no delay in packet
assertEquals(null, fwd.getDelayInfo());
// check message
assertEquals("romeo@montague.com", fwd.getForwardedPacket().getFrom());
// check end of tag
assertEquals(XmlPullParser.END_TAG, parser.getEventType());
assertEquals("forwarded", parser.getName());
}
@Test(expected=Exception.class)
public void forwardedEmptyTest() throws Exception {
XmlPullParser parser;
String control;
control = XMLBuilder.create("forwarded")
.a("xmlns", "urn:xmpp:forwarded:0")
.asString(outputProperties);
parser = getParser(control, "forwarded");
new Forwarded.Provider().parseExtension(parser);
}
@Test
public void carbonSentTest() throws Exception {
XmlPullParser parser;
String control;
Carbon cc;
Forwarded fwd;
control = XMLBuilder.create("sent")
.e("forwarded")
.a("xmlns", "urn:xmpp:forwarded:0")
.e("message")
.a("from", "romeo@montague.com")
.asString(outputProperties);
parser = getParser(control, "sent");
cc = (Carbon) new Carbon.Provider().parseExtension(parser);
fwd = cc.getForwarded();
// meta
assertEquals(Carbon.Direction.sent, cc.getDirection());
// no delay in packet
assertEquals(null, fwd.getDelayInfo());
// check message
assertEquals("romeo@montague.com", fwd.getForwardedPacket().getFrom());
// check end of tag
assertEquals(XmlPullParser.END_TAG, parser.getEventType());
assertEquals("sent", parser.getName());
}
@Test
public void carbonReceivedTest() throws Exception {
XmlPullParser parser;
String control;
Carbon cc;
control = XMLBuilder.create("received")
.e("forwarded")
.a("xmlns", "urn:xmpp:forwarded:0")
.e("message")
.a("from", "romeo@montague.com")
.asString(outputProperties);
parser = getParser(control, "received");
cc = (Carbon) new Carbon.Provider().parseExtension(parser);
assertEquals(Carbon.Direction.received, cc.getDirection());
// check end of tag
assertEquals(XmlPullParser.END_TAG, parser.getEventType());
assertEquals("received", parser.getName());
}
@Test(expected=Exception.class)
public void carbonEmptyTest() throws Exception {
XmlPullParser parser;
String control;
control = XMLBuilder.create("sent")
.a("xmlns", "urn:xmpp:forwarded:0")
.asString(outputProperties);
parser = getParser(control, "sent");
new Carbon.Provider().parseExtension(parser);
}
private XmlPullParser getParser(String control, String startTag)
throws XmlPullParserException, IOException {
XmlPullParser parser = new MXParser();
parser.setFeature(XmlPullParser.FEATURE_PROCESS_NAMESPACES, true);
parser.setInput(new StringReader(control));
while (true) {
if (parser.next() == XmlPullParser.START_TAG
&& parser.getName().equals(startTag)) {
break;
}
}
return parser;
}
}