524 lines
25 KiB
Java
524 lines
25 KiB
Java
package eu.siacs.conversations.xmpp.jingle;
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import android.util.Base64;
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import android.util.Log;
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import com.google.common.base.Function;
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import com.google.common.base.Objects;
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import com.google.common.base.Preconditions;
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import com.google.common.collect.Collections2;
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import org.checkerframework.checker.nullness.compatqual.NullableDecl;
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import java.lang.ref.WeakReference;
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import java.security.SecureRandom;
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import java.util.Collection;
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import java.util.Collections;
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import java.util.HashMap;
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import java.util.List;
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import java.util.Map;
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import java.util.Set;
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import java.util.concurrent.ConcurrentHashMap;
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import eu.siacs.conversations.Config;
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import eu.siacs.conversations.entities.Account;
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import eu.siacs.conversations.entities.Conversation;
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import eu.siacs.conversations.entities.Conversational;
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import eu.siacs.conversations.entities.Message;
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import eu.siacs.conversations.entities.Transferable;
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import eu.siacs.conversations.services.AbstractConnectionManager;
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import eu.siacs.conversations.services.XmppConnectionService;
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import eu.siacs.conversations.xml.Element;
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import eu.siacs.conversations.xml.Namespace;
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import eu.siacs.conversations.xmpp.OnIqPacketReceived;
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import eu.siacs.conversations.xmpp.jingle.stanzas.Content;
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import eu.siacs.conversations.xmpp.jingle.stanzas.FileTransferDescription;
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import eu.siacs.conversations.xmpp.jingle.stanzas.GenericDescription;
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import eu.siacs.conversations.xmpp.jingle.stanzas.JinglePacket;
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import eu.siacs.conversations.xmpp.jingle.stanzas.Propose;
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import eu.siacs.conversations.xmpp.jingle.stanzas.Reason;
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import eu.siacs.conversations.xmpp.jingle.stanzas.RtpDescription;
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import eu.siacs.conversations.xmpp.stanzas.IqPacket;
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import eu.siacs.conversations.xmpp.stanzas.MessagePacket;
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import rocks.xmpp.addr.Jid;
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public class JingleConnectionManager extends AbstractConnectionManager {
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private final HashMap<RtpSessionProposal, DeviceDiscoveryState> rtpSessionProposals = new HashMap<>();
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private final Map<AbstractJingleConnection.Id, AbstractJingleConnection> connections = new ConcurrentHashMap<>();
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private HashMap<Jid, JingleCandidate> primaryCandidates = new HashMap<>();
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public JingleConnectionManager(XmppConnectionService service) {
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super(service);
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}
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static String nextRandomId() {
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final byte[] id = new byte[16];
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new SecureRandom().nextBytes(id);
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return Base64.encodeToString(id, Base64.NO_WRAP | Base64.NO_PADDING);
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}
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public void deliverPacket(final Account account, final JinglePacket packet) {
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final String sessionId = packet.getSessionId();
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if (sessionId == null) {
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respondWithJingleError(account, packet, "unknown-session", "item-not-found", "cancel");
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return;
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}
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final AbstractJingleConnection.Id id = AbstractJingleConnection.Id.of(account, packet);
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final AbstractJingleConnection existingJingleConnection = connections.get(id);
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if (existingJingleConnection != null) {
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existingJingleConnection.deliverPacket(packet);
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} else if (packet.getAction() == JinglePacket.Action.SESSION_INITIATE) {
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final Jid from = packet.getFrom();
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final Content content = packet.getJingleContent();
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final String descriptionNamespace = content == null ? null : content.getDescriptionNamespace();
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final AbstractJingleConnection connection;
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if (FileTransferDescription.NAMESPACES.contains(descriptionNamespace)) {
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connection = new JingleFileTransferConnection(this, id, from);
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} else if (Namespace.JINGLE_APPS_RTP.equals(descriptionNamespace) && !usesTor(account)) {
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if (isBusy()) {
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mXmppConnectionService.sendIqPacket(account, packet.generateResponse(IqPacket.TYPE.RESULT), null);
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final JinglePacket sessionTermination = new JinglePacket(JinglePacket.Action.SESSION_TERMINATE, id.sessionId);
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sessionTermination.setTo(id.with);
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sessionTermination.setReason(Reason.BUSY, null);
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mXmppConnectionService.sendIqPacket(account, sessionTermination, null);
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return;
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}
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connection = new JingleRtpConnection(this, id, from);
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} else {
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respondWithJingleError(account, packet, "unsupported-info", "feature-not-implemented", "cancel");
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return;
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}
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connections.put(id, connection);
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connection.deliverPacket(packet);
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} else {
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Log.d(Config.LOGTAG, "unable to route jingle packet: " + packet);
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respondWithJingleError(account, packet, "unknown-session", "item-not-found", "cancel");
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}
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}
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private boolean usesTor(final Account account) {
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return account.isOnion() || mXmppConnectionService.useTorToConnect();
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}
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private boolean isBusy() {
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for (AbstractJingleConnection connection : this.connections.values()) {
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if (connection instanceof JingleRtpConnection) {
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return true;
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}
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}
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synchronized (this.rtpSessionProposals) {
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return this.rtpSessionProposals.containsValue(DeviceDiscoveryState.DISCOVERED) || this.rtpSessionProposals.containsValue(DeviceDiscoveryState.SEARCHING);
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}
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}
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public void respondWithJingleError(final Account account, final IqPacket original, String jingleCondition, String condition, String conditionType) {
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final IqPacket response = original.generateResponse(IqPacket.TYPE.ERROR);
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final Element error = response.addChild("error");
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error.setAttribute("type", conditionType);
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error.addChild(condition, "urn:ietf:params:xml:ns:xmpp-stanzas");
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error.addChild(jingleCondition, "urn:xmpp:jingle:errors:1");
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account.getXmppConnection().sendIqPacket(response, null);
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}
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public void deliverMessage(final Account account, final Jid to, final Jid from, final Element message, String serverMsgId, long timestamp) {
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Preconditions.checkArgument(Namespace.JINGLE_MESSAGE.equals(message.getNamespace()));
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final String sessionId = message.getAttribute("id");
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if (sessionId == null) {
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return;
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}
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if ("accept".equals(message.getName())) {
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for (AbstractJingleConnection connection : connections.values()) {
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if (connection instanceof JingleRtpConnection) {
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final JingleRtpConnection rtpConnection = (JingleRtpConnection) connection;
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final AbstractJingleConnection.Id id = connection.getId();
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if (id.account == account && id.sessionId.equals(sessionId)) {
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rtpConnection.deliveryMessage(from, message, serverMsgId, timestamp);
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return;
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}
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}
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}
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return;
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}
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final boolean fromSelf = from.asBareJid().equals(account.getJid().asBareJid());
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final AbstractJingleConnection.Id id;
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if (fromSelf) {
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if (to.isFullJid()) {
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id = AbstractJingleConnection.Id.of(account, to, sessionId);
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} else {
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return;
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}
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} else {
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id = AbstractJingleConnection.Id.of(account, from, sessionId);
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}
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final AbstractJingleConnection existingJingleConnection = connections.get(id);
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if (existingJingleConnection != null) {
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if (existingJingleConnection instanceof JingleRtpConnection) {
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((JingleRtpConnection) existingJingleConnection).deliveryMessage(from, message, serverMsgId, timestamp);
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} else {
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Log.d(Config.LOGTAG, account.getJid().asBareJid() + ": " + existingJingleConnection.getClass().getName() + " does not support jingle messages");
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}
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return;
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}
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if (fromSelf) {
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Log.d(Config.LOGTAG, account.getJid().asBareJid() + ": ignore jingle message from self");
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return;
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}
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if ("propose".equals(message.getName())) {
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final Propose propose = Propose.upgrade(message);
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final List<GenericDescription> descriptions = propose.getDescriptions();
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final Collection<RtpDescription> rtpDescriptions = Collections2.transform(
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Collections2.filter(descriptions, d -> d instanceof RtpDescription),
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input -> (RtpDescription) input
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);
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if (rtpDescriptions.size() > 0 && rtpDescriptions.size() == descriptions.size() && !usesTor(account)) {
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final Collection<Media> media = Collections2.transform(rtpDescriptions, RtpDescription::getMedia);
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if (media.contains(Media.UNKNOWN)) {
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Log.d(Config.LOGTAG,account.getJid().asBareJid()+": encountered unknown media in session proposal. "+propose);
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return;
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}
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if (isBusy()) { //TODO only if no other devices are active
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//TODO create
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final MessagePacket reject = mXmppConnectionService.getMessageGenerator().sessionReject(from, sessionId);
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mXmppConnectionService.sendMessagePacket(account, reject);
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} else {
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final JingleRtpConnection rtpConnection = new JingleRtpConnection(this, id, from);
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this.connections.put(id, rtpConnection);
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rtpConnection.deliveryMessage(from, message, serverMsgId, timestamp);
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}
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} else {
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Log.d(Config.LOGTAG, account.getJid().asBareJid() + ": unable to react to proposed session with " + rtpDescriptions.size() + " rtp descriptions of " + descriptions.size() + " total descriptions");
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}
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} else if ("proceed".equals(message.getName())) {
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synchronized (rtpSessionProposals) {
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final RtpSessionProposal proposal = getRtpSessionProposal(account,from.asBareJid(),sessionId);
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if (proposal != null) {
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rtpSessionProposals.remove(proposal);
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final JingleRtpConnection rtpConnection = new JingleRtpConnection(this, id, account.getJid());
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rtpConnection.setProposedMedia(proposal.media);
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this.connections.put(id, rtpConnection);
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rtpConnection.transitionOrThrow(AbstractJingleConnection.State.PROPOSED);
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rtpConnection.deliveryMessage(from, message, serverMsgId, timestamp);
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} else {
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Log.d(Config.LOGTAG, account.getJid().asBareJid() + ": no rtp session proposal found for " + from + " to deliver proceed");
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}
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}
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} else if ("reject".equals(message.getName())) {
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final RtpSessionProposal proposal = new RtpSessionProposal(account, from.asBareJid(), sessionId);
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synchronized (rtpSessionProposals) {
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if (rtpSessionProposals.remove(proposal) != null) {
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writeLogMissedOutgoing(account, proposal.with, proposal.sessionId, serverMsgId, timestamp);
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mXmppConnectionService.notifyJingleRtpConnectionUpdate(account, proposal.with, proposal.sessionId, RtpEndUserState.DECLINED_OR_BUSY);
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} else {
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Log.d(Config.LOGTAG, account.getJid().asBareJid() + ": no rtp session proposal found for " + from + " to deliver reject");
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}
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}
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} else {
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Log.d(Config.LOGTAG, account.getJid().asBareJid() + ": retrieved out of order jingle message");
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}
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}
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private RtpSessionProposal getRtpSessionProposal(final Account account, Jid from, String sessionId) {
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for(RtpSessionProposal rtpSessionProposal : rtpSessionProposals.keySet()) {
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if (rtpSessionProposal.sessionId.equals(sessionId) && rtpSessionProposal.with.equals(from) && rtpSessionProposal.account.getJid().equals(account.getJid())) {
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return rtpSessionProposal;
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}
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}
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return null;
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}
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private void writeLogMissedOutgoing(final Account account, Jid with, final String sessionId, String serverMsgId, long timestamp) {
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final Conversation conversation = mXmppConnectionService.findOrCreateConversation(
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account,
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with.asBareJid(),
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false,
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false
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);
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final Message message = new Message(
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conversation,
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Message.STATUS_SEND,
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Message.TYPE_RTP_SESSION,
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sessionId
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);
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message.setServerMsgId(serverMsgId);
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message.setTime(timestamp);
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writeMessage(message);
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}
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private void writeMessage(final Message message) {
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final Conversational conversational = message.getConversation();
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if (conversational instanceof Conversation) {
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((Conversation) conversational).add(message);
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mXmppConnectionService.databaseBackend.createMessage(message);
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mXmppConnectionService.updateConversationUi();
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} else {
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throw new IllegalStateException("Somehow the conversation in a message was a stub");
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}
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}
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public void startJingleFileTransfer(final Message message) {
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Preconditions.checkArgument(message.isFileOrImage(), "Message is not of type file or image");
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final Transferable old = message.getTransferable();
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if (old != null) {
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old.cancel();
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}
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final Account account = message.getConversation().getAccount();
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final AbstractJingleConnection.Id id = AbstractJingleConnection.Id.of(message);
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final JingleFileTransferConnection connection = new JingleFileTransferConnection(this, id, account.getJid());
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mXmppConnectionService.markMessage(message, Message.STATUS_WAITING);
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this.connections.put(id, connection);
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connection.init(message);
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}
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void finishConnection(final AbstractJingleConnection connection) {
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this.connections.remove(connection.getId());
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}
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void getPrimaryCandidate(final Account account, final boolean initiator, final OnPrimaryCandidateFound listener) {
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if (Config.DISABLE_PROXY_LOOKUP) {
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listener.onPrimaryCandidateFound(false, null);
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return;
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}
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if (!this.primaryCandidates.containsKey(account.getJid().asBareJid())) {
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final Jid proxy = account.getXmppConnection().findDiscoItemByFeature(Namespace.BYTE_STREAMS);
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if (proxy != null) {
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IqPacket iq = new IqPacket(IqPacket.TYPE.GET);
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iq.setTo(proxy);
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iq.query(Namespace.BYTE_STREAMS);
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account.getXmppConnection().sendIqPacket(iq, new OnIqPacketReceived() {
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@Override
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public void onIqPacketReceived(Account account, IqPacket packet) {
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final Element streamhost = packet.query().findChild("streamhost", Namespace.BYTE_STREAMS);
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final String host = streamhost == null ? null : streamhost.getAttribute("host");
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final String port = streamhost == null ? null : streamhost.getAttribute("port");
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if (host != null && port != null) {
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try {
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JingleCandidate candidate = new JingleCandidate(nextRandomId(), true);
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candidate.setHost(host);
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candidate.setPort(Integer.parseInt(port));
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candidate.setType(JingleCandidate.TYPE_PROXY);
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candidate.setJid(proxy);
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candidate.setPriority(655360 + (initiator ? 30 : 0));
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primaryCandidates.put(account.getJid().asBareJid(), candidate);
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listener.onPrimaryCandidateFound(true, candidate);
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} catch (final NumberFormatException e) {
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listener.onPrimaryCandidateFound(false, null);
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}
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} else {
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listener.onPrimaryCandidateFound(false, null);
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}
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}
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});
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} else {
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listener.onPrimaryCandidateFound(false, null);
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}
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} else {
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listener.onPrimaryCandidateFound(true,
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this.primaryCandidates.get(account.getJid().asBareJid()));
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}
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}
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public void retractSessionProposal(final Account account, final Jid with) {
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synchronized (this.rtpSessionProposals) {
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RtpSessionProposal matchingProposal = null;
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for (RtpSessionProposal proposal : this.rtpSessionProposals.keySet()) {
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if (proposal.account == account && with.asBareJid().equals(proposal.with)) {
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matchingProposal = proposal;
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break;
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}
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}
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if (matchingProposal != null) {
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this.rtpSessionProposals.remove(matchingProposal);
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final MessagePacket messagePacket = mXmppConnectionService.getMessageGenerator().sessionRetract(matchingProposal);
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writeLogMissedOutgoing(account, matchingProposal.with, matchingProposal.sessionId, null, System.currentTimeMillis());
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mXmppConnectionService.sendMessagePacket(account, messagePacket);
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}
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}
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}
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public void proposeJingleRtpSession(final Account account, final Jid with, final Set<Media> media) {
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synchronized (this.rtpSessionProposals) {
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for (Map.Entry<RtpSessionProposal, DeviceDiscoveryState> entry : this.rtpSessionProposals.entrySet()) {
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RtpSessionProposal proposal = entry.getKey();
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if (proposal.account == account && with.asBareJid().equals(proposal.with)) {
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final DeviceDiscoveryState preexistingState = entry.getValue();
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if (preexistingState != null && preexistingState != DeviceDiscoveryState.FAILED) {
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mXmppConnectionService.notifyJingleRtpConnectionUpdate(
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account,
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with,
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proposal.sessionId,
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preexistingState.toEndUserState()
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);
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return;
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}
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}
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}
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final RtpSessionProposal proposal = RtpSessionProposal.of(account, with.asBareJid(), media);
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this.rtpSessionProposals.put(proposal, DeviceDiscoveryState.SEARCHING);
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mXmppConnectionService.notifyJingleRtpConnectionUpdate(
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account,
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proposal.with,
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proposal.sessionId,
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RtpEndUserState.FINDING_DEVICE
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);
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final MessagePacket messagePacket = mXmppConnectionService.getMessageGenerator().sessionProposal(proposal);
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Log.d(Config.LOGTAG, messagePacket.toString());
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mXmppConnectionService.sendMessagePacket(account, messagePacket);
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}
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}
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public void deliverIbbPacket(Account account, IqPacket packet) {
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final String sid;
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final Element payload;
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if (packet.hasChild("open", Namespace.IBB)) {
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payload = packet.findChild("open", Namespace.IBB);
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sid = payload.getAttribute("sid");
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} else if (packet.hasChild("data", Namespace.IBB)) {
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payload = packet.findChild("data", Namespace.IBB);
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sid = payload.getAttribute("sid");
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} else if (packet.hasChild("close", Namespace.IBB)) {
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payload = packet.findChild("close", Namespace.IBB);
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sid = payload.getAttribute("sid");
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} else {
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payload = null;
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sid = null;
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}
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if (sid != null) {
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for (final AbstractJingleConnection connection : this.connections.values()) {
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if (connection instanceof JingleFileTransferConnection) {
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final JingleFileTransferConnection fileTransfer = (JingleFileTransferConnection) connection;
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final JingleTransport transport = fileTransfer.getTransport();
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if (transport instanceof JingleInBandTransport) {
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final JingleInBandTransport inBandTransport = (JingleInBandTransport) transport;
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if (inBandTransport.matches(account, sid)) {
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inBandTransport.deliverPayload(packet, payload);
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}
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return;
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}
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}
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}
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}
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Log.d(Config.LOGTAG, "unable to deliver ibb packet: " + packet.toString());
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account.getXmppConnection().sendIqPacket(packet.generateResponse(IqPacket.TYPE.ERROR), null);
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}
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public void notifyRebound() {
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for (final AbstractJingleConnection connection : this.connections.values()) {
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connection.notifyRebound();
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}
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}
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public WeakReference<JingleRtpConnection> findJingleRtpConnection(Account account, Jid with, String sessionId) {
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final AbstractJingleConnection.Id id = AbstractJingleConnection.Id.of(account, Jid.ofEscaped(with), sessionId);
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final AbstractJingleConnection connection = connections.get(id);
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if (connection instanceof JingleRtpConnection) {
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return new WeakReference<>((JingleRtpConnection) connection);
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}
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return null;
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}
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public void updateProposedSessionDiscovered(Account account, Jid from, String sessionId, final DeviceDiscoveryState target) {
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final RtpSessionProposal sessionProposal = new RtpSessionProposal(account, from.asBareJid(), sessionId);
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synchronized (this.rtpSessionProposals) {
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final DeviceDiscoveryState currentState = rtpSessionProposals.get(sessionProposal);
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if (currentState == null) {
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|
Log.d(Config.LOGTAG, "unable to find session proposal for session id " + sessionId);
|
|
return;
|
|
}
|
|
if (currentState == DeviceDiscoveryState.DISCOVERED) {
|
|
Log.d(Config.LOGTAG, "session proposal already at discovered. not going to fall back");
|
|
return;
|
|
}
|
|
this.rtpSessionProposals.put(sessionProposal, target);
|
|
mXmppConnectionService.notifyJingleRtpConnectionUpdate(account, sessionProposal.with, sessionProposal.sessionId, target.toEndUserState());
|
|
Log.d(Config.LOGTAG, account.getJid().asBareJid() + ": flagging session " + sessionId + " as " + target);
|
|
}
|
|
}
|
|
|
|
public void rejectRtpSession(final String sessionId) {
|
|
for (final AbstractJingleConnection connection : this.connections.values()) {
|
|
if (connection.getId().sessionId.equals(sessionId)) {
|
|
if (connection instanceof JingleRtpConnection) {
|
|
((JingleRtpConnection) connection).rejectCall();
|
|
}
|
|
}
|
|
}
|
|
}
|
|
|
|
public void endRtpSession(final String sessionId) {
|
|
for (final AbstractJingleConnection connection : this.connections.values()) {
|
|
if (connection.getId().sessionId.equals(sessionId)) {
|
|
if (connection instanceof JingleRtpConnection) {
|
|
((JingleRtpConnection) connection).endCall();
|
|
}
|
|
}
|
|
}
|
|
}
|
|
|
|
public void failProceed(Account account, final Jid with, String sessionId) {
|
|
final AbstractJingleConnection.Id id = AbstractJingleConnection.Id.of(account, with, sessionId);
|
|
final AbstractJingleConnection existingJingleConnection = connections.get(id);
|
|
if (existingJingleConnection instanceof JingleRtpConnection) {
|
|
((JingleRtpConnection) existingJingleConnection).deliverFailedProceed();
|
|
}
|
|
}
|
|
|
|
public enum DeviceDiscoveryState {
|
|
SEARCHING, DISCOVERED, FAILED;
|
|
|
|
public RtpEndUserState toEndUserState() {
|
|
switch (this) {
|
|
case SEARCHING:
|
|
return RtpEndUserState.FINDING_DEVICE;
|
|
case DISCOVERED:
|
|
return RtpEndUserState.RINGING;
|
|
default:
|
|
return RtpEndUserState.CONNECTIVITY_ERROR;
|
|
}
|
|
}
|
|
}
|
|
|
|
public static class RtpSessionProposal {
|
|
public final Jid with;
|
|
public final String sessionId;
|
|
private final Account account;
|
|
public final Set<Media> media;
|
|
|
|
private RtpSessionProposal(Account account, Jid with, String sessionId) {
|
|
this(account,with,sessionId, Collections.emptySet());
|
|
}
|
|
|
|
private RtpSessionProposal(Account account, Jid with, String sessionId, Set<Media> media) {
|
|
this.account = account;
|
|
this.with = with;
|
|
this.sessionId = sessionId;
|
|
this.media = media;
|
|
}
|
|
|
|
public static RtpSessionProposal of(Account account, Jid with, Set<Media> media) {
|
|
return new RtpSessionProposal(account, with, nextRandomId(), media);
|
|
}
|
|
|
|
@Override
|
|
public boolean equals(Object o) {
|
|
if (this == o) return true;
|
|
if (o == null || getClass() != o.getClass()) return false;
|
|
RtpSessionProposal proposal = (RtpSessionProposal) o;
|
|
return Objects.equal(account.getJid(), proposal.account.getJid()) &&
|
|
Objects.equal(with, proposal.with) &&
|
|
Objects.equal(sessionId, proposal.sessionId);
|
|
}
|
|
|
|
@Override
|
|
public int hashCode() {
|
|
return Objects.hashCode(account.getJid(), with, sessionId);
|
|
}
|
|
}
|
|
}
|