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create 'Description' object

This commit is contained in:
Daniel Gultsch 2020-04-01 18:35:36 +02:00
parent 7538e387ec
commit eb22bd0499
7 changed files with 241 additions and 157 deletions
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10
src/main/java/eu/siacs/conversations/generator/AbstractGenerator.java
View File

@ -20,14 +20,14 @@ import eu.siacs.conversations.services.XmppConnectionService;
import eu.siacs.conversations.utils.PhoneHelper;
import eu.siacs.conversations.xml.Namespace;
import eu.siacs.conversations.xmpp.XmppConnection;
import eu.siacs.conversations.xmpp.jingle.stanzas.Content;
import eu.siacs.conversations.xmpp.jingle.stanzas.FileTransferDescription;
public abstract class AbstractGenerator {
private final String[] FEATURES = {
"urn:xmpp:jingle:1",
Content.Version.FT_3.getNamespace(),
Content.Version.FT_4.getNamespace(),
Content.Version.FT_5.getNamespace(),
Namespace.JINGLE,
FileTransferDescription.Version.FT_3.getNamespace(),
FileTransferDescription.Version.FT_4.getNamespace(),
FileTransferDescription.Version.FT_5.getNamespace(),
Namespace.JINGLE_TRANSPORTS_S5B,
Namespace.JINGLE_TRANSPORTS_IBB,
Namespace.JINGLE_ENCRYPTED_TRANSPORT,

14
src/main/java/eu/siacs/conversations/xmpp/jingle/JingleConnectionManager.java
View File

@ -18,6 +18,8 @@ import eu.siacs.conversations.services.XmppConnectionService;
import eu.siacs.conversations.xml.Element;
import eu.siacs.conversations.xml.Namespace;
import eu.siacs.conversations.xmpp.OnIqPacketReceived;
import eu.siacs.conversations.xmpp.jingle.stanzas.Content;
import eu.siacs.conversations.xmpp.jingle.stanzas.FileTransferDescription;
import eu.siacs.conversations.xmpp.jingle.stanzas.JinglePacket;
import eu.siacs.conversations.xmpp.stanzas.IqPacket;
import rocks.xmpp.addr.Jid;
@ -34,9 +36,17 @@ public class JingleConnectionManager extends AbstractConnectionManager {
public void deliverPacket(final Account account, final JinglePacket packet) {
final AbstractJingleConnection.Id id = AbstractJingleConnection.Id.of(account, packet);
if (packet.getAction() == JinglePacket.Action.SESSION_INITIATE) { //TODO check that id doesn't exist yet
JingleFileTransferConnection connection = new JingleFileTransferConnection(this, id);
connection.init(account, packet);
final Content content = packet.getJingleContent();
final String descriptionNamespace = content == null ? null : content.getDescriptionNamespace();
final AbstractJingleConnection connection;
if (FileTransferDescription.NAMESPACES.contains(descriptionNamespace)) {
connection = new JingleFileTransferConnection(this, id);
} else {
//TODO return feature-not-implemented
return;
}
connections.put(id, connection);
connection.deliverPacket(packet);
} else {
final AbstractJingleConnection abstractJingleConnection = connections.get(id);
if (abstractJingleConnection != null) {

181
src/main/java/eu/siacs/conversations/xmpp/jingle/JingleFileTransferConnection.java
View File

@ -3,6 +3,8 @@ package eu.siacs.conversations.xmpp.jingle;
import android.util.Base64;
import android.util.Log;
import com.google.common.base.Preconditions;
import java.io.File;
import java.io.FileInputStream;
import java.io.FileNotFoundException;
@ -36,6 +38,7 @@ import eu.siacs.conversations.xml.Element;
import eu.siacs.conversations.xml.Namespace;
import eu.siacs.conversations.xmpp.OnIqPacketReceived;
import eu.siacs.conversations.xmpp.jingle.stanzas.Content;
import eu.siacs.conversations.xmpp.jingle.stanzas.FileTransferDescription;
import eu.siacs.conversations.xmpp.jingle.stanzas.JinglePacket;
import eu.siacs.conversations.xmpp.jingle.stanzas.Reason;
import eu.siacs.conversations.xmpp.stanzas.IqPacket;
@ -50,7 +53,6 @@ public class JingleFileTransferConnection extends AbstractJingleConnection imple
private static final int JINGLE_STATUS_FINISHED = 4;
private static final int JINGLE_STATUS_FAILED = 99;
private static final int JINGLE_STATUS_OFFERED = -1;
private Content.Version ftVersion = Content.Version.FT_3;
private int ibbBlockSize = 8192;
@ -63,7 +65,7 @@ public class JingleFileTransferConnection extends AbstractJingleConnection imple
private ConcurrentHashMap<String, JingleSocks5Transport> connections = new ConcurrentHashMap<>();
private String transportId;
private Element fileOffer;
private FileTransferDescription description;
private DownloadableFile file = null;
private boolean proxyActivationFailed = false;
@ -130,7 +132,7 @@ public class JingleFileTransferConnection extends AbstractJingleConnection imple
id.account.getPgpDecryptionService().decrypt(message, true);
}
} else {
if (ftVersion == Content.Version.FT_5) { //older Conversations will break when receiving a session-info
if (description.getVersion() == FileTransferDescription.Version.FT_5) { //older Conversations will break when receiving a session-info
sendHash();
}
if (message.getEncryption() == Message.ENCRYPTION_PGP) {
@ -236,7 +238,9 @@ public class JingleFileTransferConnection extends AbstractJingleConnection imple
void deliverPacket(final JinglePacket packet) {
final JinglePacket.Action action = packet.getAction();
//TODO switch case
if (action == JinglePacket.Action.SESSION_TERMINATE) {
if (action == JinglePacket.Action.SESSION_INITIATE) {
init(packet);
} else if (action == JinglePacket.Action.SESSION_TERMINATE) {
Reason reason = packet.getReason();
if (reason != null) {
if (reason.hasChild("cancel")) {
@ -307,6 +311,7 @@ public class JingleFileTransferConnection extends AbstractJingleConnection imple
}
public void init(final Message message) {
Preconditions.checkArgument(message.isFileOrImage());
if (message.getEncryption() == Message.ENCRYPTION_AXOLOTL) {
Conversation conversation = (Conversation) message.getConversation();
conversation.getAccount().getAxolotlService().prepareKeyTransportMessage(conversation, xmppAxolotlMessage -> {
@ -321,13 +326,13 @@ public class JingleFileTransferConnection extends AbstractJingleConnection imple
}
}
private void init(Message message, XmppAxolotlMessage xmppAxolotlMessage) {
private void init(final Message message, final XmppAxolotlMessage xmppAxolotlMessage) {
this.mXmppAxolotlMessage = xmppAxolotlMessage;
this.contentCreator = Content.Creator.INITIATOR;
this.contentName = JingleConnectionManager.nextRandomId();
this.message = message;
final List<String> remoteFeatures = getRemoteFeatures();
upgradeNamespace(remoteFeatures);
final FileTransferDescription.Version remoteVersion = getAvailableFileTransferVersion(remoteFeatures);
this.initialTransport = remoteFeatures.contains(Namespace.JINGLE_TRANSPORTS_S5B) ? Transport.SOCKS : Transport.IBB;
this.remoteSupportsOmemoJet = remoteFeatures.contains(Namespace.JINGLE_ENCRYPTED_TRANSPORT_OMEMO);
this.message.setTransferable(this);
@ -335,6 +340,7 @@ public class JingleFileTransferConnection extends AbstractJingleConnection imple
this.initiator = this.id.account.getJid();
this.responder = this.id.counterPart;
this.transportId = JingleConnectionManager.nextRandomId();
this.setupDescription(remoteVersion);
if (this.initialTransport == Transport.IBB) {
this.sendInitRequest();
} else {
@ -386,11 +392,13 @@ public class JingleFileTransferConnection extends AbstractJingleConnection imple
}
}
private void upgradeNamespace(List<String> remoteFeatures) {
if (remoteFeatures.contains(Content.Version.FT_5.getNamespace())) {
this.ftVersion = Content.Version.FT_5;
} else if (remoteFeatures.contains(Content.Version.FT_4.getNamespace())) {
this.ftVersion = Content.Version.FT_4;
private FileTransferDescription.Version getAvailableFileTransferVersion(List<String> remoteFeatures) {
if (remoteFeatures.contains(FileTransferDescription.Version.FT_5.getNamespace())) {
return FileTransferDescription.Version.FT_5;
} else if (remoteFeatures.contains(FileTransferDescription.Version.FT_4.getNamespace())) {
return FileTransferDescription.Version.FT_4;
} else {
return FileTransferDescription.Version.FT_3;
}
}
@ -406,11 +414,9 @@ public class JingleFileTransferConnection extends AbstractJingleConnection imple
}
}
public void init(Account account, JinglePacket packet) { //should move to deliverPacket
private void init(JinglePacket packet) { //should move to deliverPacket
this.mJingleStatus = JINGLE_STATUS_INITIATED;
Conversation conversation = this.xmppConnectionService
.findOrCreateConversation(account,
packet.getFrom().asBareJid(), false, false);
final Conversation conversation = this.xmppConnectionService.findOrCreateConversation(id.account, id.counterPart.asBareJid(), false, false);
this.message = new Message(conversation, "", Message.ENCRYPTION_NONE);
this.message.setStatus(Message.STATUS_RECEIVED);
this.mStatus = Transferable.STATUS_OFFER;
@ -445,14 +451,10 @@ public class JingleFileTransferConnection extends AbstractJingleConnection imple
return;
}
}
this.ftVersion = content.getVersion();
if (ftVersion == null) {
respondToIq(packet, false);
this.fail();
return;
}
this.fileOffer = content.getFileOffer(this.ftVersion);
this.description = (FileTransferDescription) content.getDescription();
final Element fileOffer = this.description.getFileOffer();
if (fileOffer != null) {
boolean remoteIsUsingJet = false;
@ -536,71 +538,76 @@ public class JingleFileTransferConnection extends AbstractJingleConnection imple
}
}
private void setupDescription(final FileTransferDescription.Version version) {
this.file = this.xmppConnectionService.getFileBackend().getFile(message, false);
final FileTransferDescription description;
if (message.getEncryption() == Message.ENCRYPTION_AXOLOTL) {
this.file.setKey(mXmppAxolotlMessage.getInnerKey());
this.file.setIv(mXmppAxolotlMessage.getIV());
//legacy OMEMO encrypted file transfer reported file size of the encrypted file
//JET uses the file size of the plain text file. The difference is only 16 bytes (auth tag)
this.file.setExpectedSize(file.getSize() + (this.remoteSupportsOmemoJet ? 0 : 16));
if (remoteSupportsOmemoJet) {
description = FileTransferDescription.of(this.file, version, null);
} else {
description = FileTransferDescription.of(this.file, version, this.mXmppAxolotlMessage);
}
} else {
this.file.setExpectedSize(file.getSize());
description = FileTransferDescription.of(this.file, version, null);
}
this.description = description;
}
private void sendInitRequest() {
final JinglePacket packet = this.bootstrapPacket(JinglePacket.Action.SESSION_INITIATE);
final Content content = new Content(this.contentCreator, this.contentName);
if (message.isFileOrImage()) {
content.setTransportId(this.transportId);
this.file = this.xmppConnectionService.getFileBackend().getFile(message, false);
if (message.getEncryption() == Message.ENCRYPTION_AXOLOTL) {
this.file.setKey(mXmppAxolotlMessage.getInnerKey());
this.file.setIv(mXmppAxolotlMessage.getIV());
//legacy OMEMO encrypted file transfer reported file size of the encrypted file
//JET uses the file size of the plain text file. The difference is only 16 bytes (auth tag)
this.file.setExpectedSize(file.getSize() + (this.remoteSupportsOmemoJet ? 0 : 16));
final Element file = content.setFileOffer(this.file, false, this.ftVersion);
if (remoteSupportsOmemoJet) {
Log.d(Config.LOGTAG, id.account.getJid().asBareJid() + ": remote announced support for JET");
final Element security = new Element("security", Namespace.JINGLE_ENCRYPTED_TRANSPORT);
security.setAttribute("name", this.contentName);
security.setAttribute("cipher", JET_OMEMO_CIPHER);
security.setAttribute("type", AxolotlService.PEP_PREFIX);
security.addChild(mXmppAxolotlMessage.toElement());
content.addChild(security);
} else {
file.addChild(mXmppAxolotlMessage.toElement());
}
} else {
this.file.setExpectedSize(file.getSize());
content.setFileOffer(this.file, false, this.ftVersion);
}
message.resetFileParams();
try {
this.mFileInputStream = new FileInputStream(file);
} catch (FileNotFoundException e) {
fail(e.getMessage());
return;
}
content.setTransportId(this.transportId);
if (this.initialTransport == Transport.IBB) {
content.ibbTransport().setAttribute("block-size", Integer.toString(this.ibbBlockSize));
Log.d(Config.LOGTAG, id.account.getJid().asBareJid() + ": sending IBB offer");
} else {
final List<Element> candidates = getCandidatesAsElements();
Log.d(Config.LOGTAG, String.format("%s: sending S5B offer with %d candidates", id.account.getJid().asBareJid(), candidates.size()));
content.socks5transport().setChildren(candidates);
}
packet.setJingleContent(content);
this.sendJinglePacket(packet, (account, response) -> {
if (response.getType() == IqPacket.TYPE.RESULT) {
Log.d(Config.LOGTAG, id.account.getJid().asBareJid() + ": other party received offer");
if (mJingleStatus == JINGLE_STATUS_OFFERED) {
mJingleStatus = JINGLE_STATUS_INITIATED;
xmppConnectionService.markMessage(message, Message.STATUS_OFFERED);
} else {
Log.d(Config.LOGTAG, "received ack for offer when status was " + mJingleStatus);
}
} else {
fail(IqParser.extractErrorMessage(response));
}
});
content.setTransportId(this.transportId);
if (message.getEncryption() == Message.ENCRYPTION_AXOLOTL && remoteSupportsOmemoJet) {
Log.d(Config.LOGTAG, id.account.getJid().asBareJid() + ": remote announced support for JET");
final Element security = new Element("security", Namespace.JINGLE_ENCRYPTED_TRANSPORT);
security.setAttribute("name", this.contentName);
security.setAttribute("cipher", JET_OMEMO_CIPHER);
security.setAttribute("type", AxolotlService.PEP_PREFIX);
security.addChild(mXmppAxolotlMessage.toElement());
content.addChild(security);
}
content.setDescription(this.description);
message.resetFileParams();
try {
this.mFileInputStream = new FileInputStream(file);
} catch (FileNotFoundException e) {
fail(e.getMessage());
return;
}
content.setTransportId(this.transportId);
if (this.initialTransport == Transport.IBB) {
content.ibbTransport().setAttribute("block-size", Integer.toString(this.ibbBlockSize));
Log.d(Config.LOGTAG, id.account.getJid().asBareJid() + ": sending IBB offer");
} else {
final List<Element> candidates = getCandidatesAsElements();
Log.d(Config.LOGTAG, String.format("%s: sending S5B offer with %d candidates", id.account.getJid().asBareJid(), candidates.size()));
content.socks5transport().setChildren(candidates);
}
packet.setJingleContent(content);
this.sendJinglePacket(packet, (account, response) -> {
if (response.getType() == IqPacket.TYPE.RESULT) {
Log.d(Config.LOGTAG, id.account.getJid().asBareJid() + ": other party received offer");
if (mJingleStatus == JINGLE_STATUS_OFFERED) {
mJingleStatus = JINGLE_STATUS_INITIATED;
xmppConnectionService.markMessage(message, Message.STATUS_OFFERED);
} else {
Log.d(Config.LOGTAG, "received ack for offer when status was " + mJingleStatus);
}
} else {
fail(IqParser.extractErrorMessage(response));
}
});
}
private void sendHash() {
final Element checksum = new Element("checksum", ftVersion.getNamespace());
final Element checksum = new Element("checksum", description.getVersion().getNamespace());
checksum.setAttribute("creator", "initiator");
checksum.setAttribute("name", "a-file-offer");
Element hash = checksum.addChild("file").addChild("hash", "urn:xmpp:hashes:2");
@ -637,7 +644,7 @@ public class JingleFileTransferConnection extends AbstractJingleConnection imple
this.jingleConnectionManager.getPrimaryCandidate(this.id.account, initiating(), (success, candidate) -> {
final JinglePacket packet = bootstrapPacket(JinglePacket.Action.SESSION_ACCEPT);
final Content content = new Content(contentCreator, contentName);
content.setFileOffer(fileOffer, ftVersion);
content.setDescription(this.description);
content.setTransportId(transportId);
if (success && candidate != null && !equalCandidateExists(candidate)) {
final JingleSocks5Transport socksConnection = new JingleSocks5Transport(this, candidate);
@ -677,7 +684,7 @@ public class JingleFileTransferConnection extends AbstractJingleConnection imple
this.transport = new JingleInBandTransport(this, this.transportId, this.ibbBlockSize);
final JinglePacket packet = bootstrapPacket(JinglePacket.Action.SESSION_ACCEPT);
final Content content = new Content(contentCreator, contentName);
content.setFileOffer(fileOffer, ftVersion);
content.setDescription(this.description);
content.setTransportId(transportId);
content.ibbTransport().setAttribute("block-size", this.ibbBlockSize);
packet.setJingleContent(content);
@ -812,7 +819,7 @@ public class JingleFileTransferConnection extends AbstractJingleConnection imple
if (connection.needsActivation()) {
if (connection.getCandidate().isOurs()) {
final String sid;
if (ftVersion == Content.Version.FT_3) {
if (description.getVersion() == FileTransferDescription.Version.FT_3) {
Log.d(Config.LOGTAG, id.account.getJid().asBareJid() + ": use session ID instead of transport ID to activate proxy");
sid = id.sessionId;
} else {
@ -1220,12 +1227,8 @@ public class JingleFileTransferConnection extends AbstractJingleConnection imple
return this.transportId;
}
public Content.Version getFtVersion() {
return this.ftVersion;
}
public boolean hasTransportId(String sid) {
return sid.equals(this.transportId);
public FileTransferDescription.Version getFtVersion() {
return this.description.getVersion();
}
public JingleTransport getTransport() {

9
src/main/java/eu/siacs/conversations/xmpp/jingle/JingleSocks5Transport.java
View File

@ -24,6 +24,7 @@ import eu.siacs.conversations.utils.CryptoHelper;
import eu.siacs.conversations.utils.SocksSocketFactory;
import eu.siacs.conversations.utils.WakeLockHelper;
import eu.siacs.conversations.xmpp.jingle.stanzas.Content;
import eu.siacs.conversations.xmpp.jingle.stanzas.FileTransferDescription;
public class JingleSocks5Transport extends JingleTransport {
@ -52,7 +53,7 @@ public class JingleSocks5Transport extends JingleTransport {
this.connection = jingleConnection;
this.account = jingleConnection.getId().account;
final StringBuilder destBuilder = new StringBuilder();
if (this.connection.getFtVersion() == Content.Version.FT_3) {
if (this.connection.getFtVersion() == FileTransferDescription.Version.FT_3) {
Log.d(Config.LOGTAG, this.account.getJid().asBareJid() + ": using session Id instead of transport Id for proxy destination");
destBuilder.append(this.connection.getId().sessionId);
} else {
@ -132,7 +133,7 @@ public class JingleSocks5Transport extends JingleTransport {
responseHeader = new byte[]{0x05, 0x00, 0x00, 0x03};
success = true;
} else {
Log.d(Config.LOGTAG,this.account.getJid().asBareJid()+": destination mismatch. received "+receivedDestination+" (expected "+this.destination+")");
Log.d(Config.LOGTAG, this.account.getJid().asBareJid() + ": destination mismatch. received " + receivedDestination + " (expected " + this.destination + ")");
responseHeader = new byte[]{0x05, 0x04, 0x00, 0x03};
success = false;
}
@ -143,7 +144,7 @@ public class JingleSocks5Transport extends JingleTransport {
outputStream.write(response.array());
outputStream.flush();
if (success) {
Log.d(Config.LOGTAG,this.account.getJid().asBareJid()+": successfully processed connection to candidate "+candidate.getHost()+":"+candidate.getPort());
Log.d(Config.LOGTAG, this.account.getJid().asBareJid() + ": successfully processed connection to candidate " + candidate.getHost() + ":" + candidate.getPort());
socket.setSoTimeout(0);
this.socket = socket;
this.inputStream = inputStream;
@ -216,7 +217,7 @@ public class JingleSocks5Transport extends JingleTransport {
}
} catch (Exception e) {
final Account account = this.account;
Log.d(Config.LOGTAG, account.getJid().asBareJid()+": failed sending file after "+transmitted+"/"+file.getExpectedSize()+" ("+ socket.getInetAddress()+":"+socket.getPort()+")", e);
Log.d(Config.LOGTAG, account.getJid().asBareJid() + ": failed sending file after " + transmitted + "/" + file.getExpectedSize() + " (" + socket.getInetAddress() + ":" + socket.getPort() + ")", e);
callback.onFileTransferAborted();
} finally {
FileBackend.close(fileInputStream);

75
src/main/java/eu/siacs/conversations/xmpp/jingle/stanzas/Content.java
View File

@ -39,58 +39,35 @@ public class Content extends Element {
return Creator.of(getAttribute("creator"));
}
public Version getVersion() {
if (hasChild("description", Version.FT_3.namespace)) {
return Version.FT_3;
} else if (hasChild("description", Version.FT_4.namespace)) {
return Version.FT_4;
} else if (hasChild("description", Version.FT_5.namespace)) {
return Version.FT_5;
}
return null;
public Senders getSenders() {
return Senders.of(getAttribute("senders"));
}
public Element setFileOffer(DownloadableFile actualFile, boolean otr, Version version) {
Element description = this.addChild("description", version.namespace);
Element file;
if (version == Version.FT_3) {
Element offer = description.addChild("offer");
file = offer.addChild("file");
} else {
file = description.addChild("file");
}
file.addChild("size").setContent(Long.toString(actualFile.getExpectedSize()));
if (otr) {
file.addChild("name").setContent(actualFile.getName() + ".otr");
} else {
file.addChild("name").setContent(actualFile.getName());
}
return file;
public void setSenders(Senders senders) {
this.setAttribute("senders", senders.toString());
}
public Element getFileOffer(Version version) {
Element description = this.findChild("description", version.namespace);
public GenericDescription getDescription() {
final Element description = this.findChild("description");
if (description == null) {
return null;
}
if (version == Version.FT_3) {
Element offer = description.findChild("offer");
if (offer == null) {
return null;
}
return offer.findChild("file");
final String xmlns = description.getNamespace();
if (FileTransferDescription.NAMESPACES.contains(xmlns)) {
return FileTransferDescription.upgrade(description);
} else {
return description.findChild("file");
return GenericDescription.upgrade(description);
}
}
public void setFileOffer(Element fileOffer, Version version) {
Element description = this.addChild("description", version.namespace);
if (version == Version.FT_3) {
description.addChild("offer").addChild(fileOffer);
} else {
description.addChild(fileOffer);
}
public void setDescription(final GenericDescription description) {
Preconditions.checkNotNull(description);
this.addChild(description);
}
public String getDescriptionNamespace() {
final Element description = this.findChild("description");
return description == null ? null : description.getNamespace();
}
public String getTransportId() {
@ -132,22 +109,6 @@ public class Content extends Element {
return this.hasChild("transport", Namespace.JINGLE_TRANSPORTS_IBB);
}
public enum Version {
FT_3("urn:xmpp:jingle:apps:file-transfer:3"),
FT_4("urn:xmpp:jingle:apps:file-transfer:4"),
FT_5("urn:xmpp:jingle:apps:file-transfer:5");
private final String namespace;
Version(String namespace) {
this.namespace = namespace;
}
public String getNamespace() {
return namespace;
}
}
public enum Creator {
INITIATOR, RESPONDER;

89
src/main/java/eu/siacs/conversations/xmpp/jingle/stanzas/FileTransferDescription.java Normal file
View File

@ -0,0 +1,89 @@
package eu.siacs.conversations.xmpp.jingle.stanzas;
import com.google.common.base.Preconditions;
import java.util.Arrays;
import java.util.List;
import eu.siacs.conversations.crypto.axolotl.XmppAxolotlMessage;
import eu.siacs.conversations.entities.DownloadableFile;
import eu.siacs.conversations.xml.Element;
public class FileTransferDescription extends GenericDescription {
public static List<String> NAMESPACES = Arrays.asList(
Version.FT_3.namespace,
Version.FT_4.namespace,
Version.FT_5.namespace
);
private FileTransferDescription(String name, String namespace) {
super(name, namespace);
}
public Version getVersion() {
final String namespace = getNamespace();
if (namespace.equals(Version.FT_3.namespace)) {
return Version.FT_3;
} else if (namespace.equals(Version.FT_4.namespace)) {
return Version.FT_4;
} else if (namespace.equals(Version.FT_5.namespace)) {
return Version.FT_5;
} else {
throw new IllegalStateException("Unknown namespace");
}
}
public Element getFileOffer() {
final Version version = getVersion();
if (version == Version.FT_3) {
final Element offer = this.findChild("offer");
return offer == null ? null : offer.findChild("file");
} else {
return this.findChild("file");
}
}
public static FileTransferDescription of(DownloadableFile file, Version version, XmppAxolotlMessage axolotlMessage) {
final FileTransferDescription description = new FileTransferDescription("description", version.getNamespace());
final Element fileElement;
if (version == Version.FT_3) {
Element offer = description.addChild("offer");
fileElement = offer.addChild("file");
} else {
fileElement = description.addChild("file");
}
fileElement.addChild("size").setContent(Long.toString(file.getExpectedSize()));
fileElement.addChild("name").setContent(file.getName());
if (axolotlMessage != null) {
fileElement.addChild(axolotlMessage.toElement());
}
return description;
}
public static FileTransferDescription upgrade(final Element element) {
Preconditions.checkArgument("description".equals(element.getName()), "Name of provided element is not description");
Preconditions.checkArgument(NAMESPACES.contains(element.getNamespace()), "Element does not match a file transfer namespace");
final FileTransferDescription description = new FileTransferDescription("description", element.getNamespace());
description.setAttributes(element.getAttributes());
description.setChildren(element.getChildren());
return description;
}
public enum Version {
FT_3("urn:xmpp:jingle:apps:file-transfer:3"),
FT_4("urn:xmpp:jingle:apps:file-transfer:4"),
FT_5("urn:xmpp:jingle:apps:file-transfer:5");
private final String namespace;
Version(String namespace) {
this.namespace = namespace;
}
public String getNamespace() {
return namespace;
}
}
}

20
src/main/java/eu/siacs/conversations/xmpp/jingle/stanzas/GenericDescription.java Normal file
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@ -0,0 +1,20 @@
package eu.siacs.conversations.xmpp.jingle.stanzas;
import com.google.common.base.Preconditions;
import eu.siacs.conversations.xml.Element;
public class GenericDescription extends Element {
protected GenericDescription(String name, final String namespace) {
super(name, namespace);
}
public static GenericDescription upgrade(final Element element) {
Preconditions.checkArgument("description".equals(element.getName()));
final GenericDescription description = new GenericDescription("description", element.getNamespace());
description.setAttributes(element.getAttributes());
description.setChildren(element.getChildren());
return description;
}
}