Examples with Bytestream org.jivesoftware.smackx.bytestreams.socks5.packet.Bytestream used on opensource projects

Example 21 with Bytestream

use of org.jivesoftware.smackx.bytestreams.socks5.packet.Bytestream in project Smack by igniterealtime.

the class Socks5ClientForInitiator method activate.

/**
     * Activates the SOCKS5 Bytestream by sending an XMPP SOCKS5 Bytestream activation stanza(/packet) to the
     * SOCKS5 proxy.
     * @throws XMPPErrorException 
     * @throws NoResponseException 
     * @throws NotConnectedException 
     * @throws InterruptedException 
     * @throws SmackException if there was no response from the server.
     */
private void activate() throws NoResponseException, XMPPErrorException, NotConnectedException, InterruptedException {
    Bytestream activate = createStreamHostActivation();
    // if activation fails #nextResultOrThrow() throws an exception
    connection.get().createStanzaCollectorAndSend(activate).nextResultOrThrow();
}

Example 22 with Bytestream

use of org.jivesoftware.smackx.bytestreams.socks5.packet.Bytestream in project Smack by igniterealtime.

the class Socks5TransferNegotiator method negotiateIncomingStream.

@Override
InputStream negotiateIncomingStream(Stanza streamInitiation) throws InterruptedException, SmackException, XMPPErrorException {
    // build SOCKS5 Bytestream request
    Socks5BytestreamRequest request = new ByteStreamRequest(this.manager, (Bytestream) streamInitiation);
    // always accept the request
    Socks5BytestreamSession session = request.accept();
    // test input stream
    try {
        PushbackInputStream stream = new PushbackInputStream(session.getInputStream());
        int firstByte = stream.read();
        stream.unread(firstByte);
        return stream;
    } catch (IOException e) {
        throw new SmackException("Error establishing input stream", e);
    }
}

Example 23 with Bytestream

use of org.jivesoftware.smackx.bytestreams.socks5.packet.Bytestream in project Smack by igniterealtime.

the class Socks5BytestreamManager method createStreamHostRequest.

/**
     * Returns a IQ stanza(/packet) to query a SOCKS5 proxy its network settings.
     * 
     * @param proxy the proxy to query
     * @return IQ stanza(/packet) to query a SOCKS5 proxy its network settings
     */
private static Bytestream createStreamHostRequest(Jid proxy) {
    Bytestream request = new Bytestream();
    request.setType(IQ.Type.get);
    request.setTo(proxy);
    return request;
}

Example 24 with Bytestream

use of org.jivesoftware.smackx.bytestreams.socks5.packet.Bytestream in project Smack by igniterealtime.

the class Socks5BytestreamManager method establishSession.

/**
     * Establishes a SOCKS5 Bytestream with the given user using the given session ID and returns
     * the Socket to send/receive data to/from the user.
     * 
     * @param targetJID the JID of the user a SOCKS5 Bytestream should be established
     * @param sessionID the session ID for the SOCKS5 Bytestream request
     * @return the Socket to send/receive data to/from the user
     * @throws IOException if the bytestream could not be established
     * @throws InterruptedException if the current thread was interrupted while waiting
     * @throws NoResponseException 
     * @throws SmackException if the target does not support SOCKS5.
     * @throws XMPPException 
     */
@Override
public Socks5BytestreamSession establishSession(Jid targetJID, String sessionID) throws IOException, InterruptedException, NoResponseException, SmackException, XMPPException {
    XMPPConnection connection = connection();
    XMPPErrorException discoveryException = null;
    // check if target supports SOCKS5 Bytestream
    if (!supportsSocks5(targetJID)) {
        throw new FeatureNotSupportedException("SOCKS5 Bytestream", targetJID);
    }
    List<Jid> proxies = new ArrayList<>();
    // determine SOCKS5 proxies from XMPP-server
    try {
        proxies.addAll(determineProxies());
    } catch (XMPPErrorException e) {
        // don't abort here, just remember the exception thrown by determineProxies()
        // determineStreamHostInfos() will at least add the local Socks5 proxy (if enabled)
        discoveryException = e;
    }
    // determine address and port of each proxy
    List<StreamHost> streamHosts = determineStreamHostInfos(proxies);
    if (streamHosts.isEmpty()) {
        if (discoveryException != null) {
            throw discoveryException;
        } else {
            throw new SmackException("no SOCKS5 proxies available");
        }
    }
    // compute digest
    String digest = Socks5Utils.createDigest(sessionID, connection.getUser(), targetJID);
    // prioritize last working SOCKS5 proxy if exists
    if (this.proxyPrioritizationEnabled && this.lastWorkingProxy != null) {
        StreamHost selectedStreamHost = null;
        for (StreamHost streamHost : streamHosts) {
            if (streamHost.getJID().equals(this.lastWorkingProxy)) {
                selectedStreamHost = streamHost;
                break;
            }
        }
        if (selectedStreamHost != null) {
            streamHosts.remove(selectedStreamHost);
            streamHosts.add(0, selectedStreamHost);
        }
    }
    Socks5Proxy socks5Proxy = Socks5Proxy.getSocks5Proxy();
    try {
        // add transfer digest to local proxy to make transfer valid
        socks5Proxy.addTransfer(digest);
        // create initiation packet
        Bytestream initiation = createBytestreamInitiation(sessionID, targetJID, streamHosts);
        // send initiation packet
        Stanza response = connection.createStanzaCollectorAndSend(initiation).nextResultOrThrow(getTargetResponseTimeout());
        // extract used stream host from response
        StreamHostUsed streamHostUsed = ((Bytestream) response).getUsedHost();
        StreamHost usedStreamHost = initiation.getStreamHost(streamHostUsed.getJID());
        if (usedStreamHost == null) {
            throw new SmackException("Remote user responded with unknown host");
        }
        // build SOCKS5 client
        Socks5Client socks5Client = new Socks5ClientForInitiator(usedStreamHost, digest, connection, sessionID, targetJID);
        // establish connection to proxy
        Socket socket = socks5Client.getSocket(getProxyConnectionTimeout());
        // remember last working SOCKS5 proxy to prioritize it for next request
        this.lastWorkingProxy = usedStreamHost.getJID();
        // negotiation successful, return the output stream
        return new Socks5BytestreamSession(socket, usedStreamHost.getJID().equals(connection.getUser()));
    } catch (TimeoutException e) {
        throw new IOException("Timeout while connecting to SOCKS5 proxy");
    } finally {
        // remove transfer digest if output stream is returned or an exception
        // occurred
        socks5Proxy.removeTransfer(digest);
    }
}

Example 25 with Bytestream

use of org.jivesoftware.smackx.bytestreams.socks5.packet.Bytestream in project Smack by igniterealtime.

the class Socks5BytestreamManager method createBytestreamInitiation.

/**
     * Returns a SOCKS5 Bytestream initialization request stanza(/packet) with the given session ID
     * containing the given stream hosts for the given target JID.
     * 
     * @param sessionID the session ID for the SOCKS5 Bytestream
     * @param targetJID the target JID of SOCKS5 Bytestream request
     * @param streamHosts a list of SOCKS5 proxies the target should connect to
     * @return a SOCKS5 Bytestream initialization request packet
     */
private static Bytestream createBytestreamInitiation(String sessionID, Jid targetJID, List<StreamHost> streamHosts) {
    Bytestream initiation = new Bytestream(sessionID);
    // add all stream hosts
    for (StreamHost streamHost : streamHosts) {
        initiation.addStreamHost(streamHost);
    }
    initiation.setType(IQ.Type.set);
    initiation.setTo(targetJID);
    return initiation;
}