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-rw-r--r--juick-server/src/main/java/com/juick/server/xmpp/s2s/BasicXmppSession.java69
-rw-r--r--juick-server/src/main/java/com/juick/server/xmpp/s2s/CacheEntry.java40
-rw-r--r--juick-server/src/main/java/com/juick/server/xmpp/s2s/Connection.java139
-rw-r--r--juick-server/src/main/java/com/juick/server/xmpp/s2s/ConnectionIn.java216
-rw-r--r--juick-server/src/main/java/com/juick/server/xmpp/s2s/ConnectionListener.java14
-rw-r--r--juick-server/src/main/java/com/juick/server/xmpp/s2s/ConnectionOut.java167
-rw-r--r--juick-server/src/main/java/com/juick/server/xmpp/s2s/DNSQueries.java65
-rw-r--r--juick-server/src/main/java/com/juick/server/xmpp/s2s/StanzaListener.java28
-rw-r--r--juick-server/src/main/java/com/juick/server/xmpp/s2s/util/DialbackUtils.java36
9 files changed, 774 insertions, 0 deletions
diff --git a/juick-server/src/main/java/com/juick/server/xmpp/s2s/BasicXmppSession.java b/juick-server/src/main/java/com/juick/server/xmpp/s2s/BasicXmppSession.java
new file mode 100644
index 00000000..647f2717
--- /dev/null
+++ b/juick-server/src/main/java/com/juick/server/xmpp/s2s/BasicXmppSession.java
@@ -0,0 +1,69 @@
+/*
+ * Copyright (C) 2008-2017, Juick
+ *
+ * This program is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU Affero General Public License as
+ * published by the Free Software Foundation, either version 3 of the
+ * License, or (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ * GNU Affero General Public License for more details.
+ *
+ * You should have received a copy of the GNU Affero General Public License
+ * along with this program. If not, see <http://www.gnu.org/licenses/>.
+ */
+
+package com.juick.server.xmpp.s2s;
+
+import rocks.xmpp.addr.Jid;
+import rocks.xmpp.core.XmppException;
+import rocks.xmpp.core.session.ConnectionConfiguration;
+import rocks.xmpp.core.session.XmppSession;
+import rocks.xmpp.core.session.XmppSessionConfiguration;
+import rocks.xmpp.core.stanza.model.IQ;
+import rocks.xmpp.core.stanza.model.Message;
+import rocks.xmpp.core.stanza.model.Presence;
+import rocks.xmpp.core.stanza.model.server.ServerIQ;
+import rocks.xmpp.core.stanza.model.server.ServerMessage;
+import rocks.xmpp.core.stanza.model.server.ServerPresence;
+import rocks.xmpp.core.stream.model.StreamElement;
+
+/**
+ * Created by vitalyster on 06.02.2017.
+ */
+public class BasicXmppSession extends XmppSession {
+ protected BasicXmppSession(String xmppServiceDomain, XmppSessionConfiguration configuration, ConnectionConfiguration... connectionConfigurations) {
+ super(xmppServiceDomain, configuration, connectionConfigurations);
+ }
+
+ public static BasicXmppSession create(String xmppServiceDomain, XmppSessionConfiguration configuration) {
+ BasicXmppSession session = new BasicXmppSession(xmppServiceDomain, configuration);
+ notifyCreationListeners(session);
+ return session;
+ }
+
+ @Override
+ public void connect(Jid from) throws XmppException {
+
+ }
+
+ @Override
+ public Jid getConnectedResource() {
+ return null;
+ }
+
+ @Override
+ protected StreamElement prepareElement(StreamElement element) {
+ if (element instanceof Message) {
+ element = ServerMessage.from((Message) element);
+ } else if (element instanceof Presence) {
+ element = ServerPresence.from((Presence) element);
+ } else if (element instanceof IQ) {
+ element = ServerIQ.from((IQ) element);
+ }
+
+ return element;
+ }
+}
diff --git a/juick-server/src/main/java/com/juick/server/xmpp/s2s/CacheEntry.java b/juick-server/src/main/java/com/juick/server/xmpp/s2s/CacheEntry.java
new file mode 100644
index 00000000..33e875bd
--- /dev/null
+++ b/juick-server/src/main/java/com/juick/server/xmpp/s2s/CacheEntry.java
@@ -0,0 +1,40 @@
+/*
+ * Copyright (C) 2008-2017, Juick
+ *
+ * This program is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU Affero General Public License as
+ * published by the Free Software Foundation, either version 3 of the
+ * License, or (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ * GNU Affero General Public License for more details.
+ *
+ * You should have received a copy of the GNU Affero General Public License
+ * along with this program. If not, see <http://www.gnu.org/licenses/>.
+ */
+
+package com.juick.server.xmpp.s2s;
+
+import rocks.xmpp.addr.Jid;
+
+import java.time.Instant;
+
+/**
+ *
+ * @author ugnich
+ */
+public class CacheEntry {
+
+ public Jid hostname;
+ public Instant created;
+ public Instant updated;
+ public String xml;
+
+ public CacheEntry(Jid hostname, String xml) {
+ this.hostname = hostname;
+ this.created = this.updated =Instant.now();
+ this.xml = xml;
+ }
+}
diff --git a/juick-server/src/main/java/com/juick/server/xmpp/s2s/Connection.java b/juick-server/src/main/java/com/juick/server/xmpp/s2s/Connection.java
new file mode 100644
index 00000000..d745a406
--- /dev/null
+++ b/juick-server/src/main/java/com/juick/server/xmpp/s2s/Connection.java
@@ -0,0 +1,139 @@
+/*
+ * Copyright (C) 2008-2017, Juick
+ *
+ * This program is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU Affero General Public License as
+ * published by the Free Software Foundation, either version 3 of the
+ * License, or (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ * GNU Affero General Public License for more details.
+ *
+ * You should have received a copy of the GNU Affero General Public License
+ * along with this program. If not, see <http://www.gnu.org/licenses/>.
+ */
+
+package com.juick.server.xmpp.s2s;
+
+import com.fasterxml.jackson.annotation.JsonIgnore;
+import com.juick.server.XMPPServer;
+import org.slf4j.Logger;
+import org.slf4j.LoggerFactory;
+import org.xmlpull.v1.XmlPullParser;
+import org.xmlpull.v1.XmlPullParserException;
+import org.xmlpull.v1.XmlPullParserFactory;
+
+import java.io.IOException;
+import java.io.InputStreamReader;
+import java.io.OutputStreamWriter;
+import java.net.Socket;
+import java.nio.charset.StandardCharsets;
+import java.time.Instant;
+import java.util.UUID;
+
+/**
+ *
+ * @author ugnich
+ */
+public class Connection {
+
+ protected static final Logger logger = LoggerFactory.getLogger(Connection.class);
+
+ public String streamID;
+ public Instant created;
+ public Instant updated;
+ public long bytesLocal = 0;
+ public long packetsLocal = 0;
+ XMPPServer xmpp;
+ private Socket socket;
+ public static final String NS_DB = "jabber:server:dialback";
+ public static final String NS_TLS = "urn:ietf:params:xml:ns:xmpp-tls";
+ public static final String NS_STREAM = "http://etherx.jabber.org/streams";
+ XmlPullParserFactory factory = XmlPullParserFactory.newInstance();
+ XmlPullParser parser = factory.newPullParser();
+ OutputStreamWriter writer;
+ private boolean secured = false;
+
+
+
+ public Connection(XMPPServer xmpp) throws XmlPullParserException {
+ this.xmpp = xmpp;
+ created = updated = Instant.now();
+ }
+
+ public void logParser() {
+ if (streamID == null) {
+ return;
+ }
+ String tag = "IN: <" + parser.getName();
+ for (int i = 0; i < parser.getAttributeCount(); i++) {
+ tag += " " + parser.getAttributeName(i) + "=\"" + parser.getAttributeValue(i) + "\"";
+ }
+ tag += ">...</" + parser.getName() + ">\n";
+ logger.trace(tag);
+ }
+
+ public void sendStanza(String xml) {
+ if (streamID != null) {
+ logger.trace("OUT: {}\n", xml);
+ }
+ try {
+ writer.write(xml);
+ writer.flush();
+ } catch (IOException e) {
+ logger.error("send stanza failed", e);
+ }
+
+ updated = Instant.now();
+ bytesLocal += xml.length();
+ packetsLocal++;
+ }
+
+ public void closeConnection() {
+ if (streamID != null) {
+ logger.info("closing stream {}", streamID);
+ }
+
+ try {
+ writer.write("</stream:stream>");
+ } catch (Exception e) {
+ }
+
+ try {
+ writer.close();
+ } catch (Exception e) {
+ }
+
+ try {
+ socket.close();
+ } catch (Exception e) {
+ }
+ }
+
+ public boolean isSecured() {
+ return secured;
+ }
+
+ public void setSecured(boolean secured) {
+ this.secured = secured;
+ }
+
+ public void restartParser() throws XmlPullParserException, IOException {
+ streamID = UUID.randomUUID().toString();
+ parser = factory.newPullParser();
+ parser.setFeature(XmlPullParser.FEATURE_PROCESS_NAMESPACES, true);
+ parser.setInput(new InputStreamReader(socket.getInputStream()));
+ writer = new OutputStreamWriter(socket.getOutputStream(), StandardCharsets.UTF_8);
+ }
+
+ @JsonIgnore
+ public Socket getSocket() {
+ return socket;
+ }
+
+ public void setSocket(Socket socket) {
+ this.socket = socket;
+ }
+}
diff --git a/juick-server/src/main/java/com/juick/server/xmpp/s2s/ConnectionIn.java b/juick-server/src/main/java/com/juick/server/xmpp/s2s/ConnectionIn.java
new file mode 100644
index 00000000..a658dbde
--- /dev/null
+++ b/juick-server/src/main/java/com/juick/server/xmpp/s2s/ConnectionIn.java
@@ -0,0 +1,216 @@
+/*
+ * Copyright (C) 2008-2017, Juick
+ *
+ * This program is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU Affero General Public License as
+ * published by the Free Software Foundation, either version 3 of the
+ * License, or (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ * GNU Affero General Public License for more details.
+ *
+ * You should have received a copy of the GNU Affero General Public License
+ * along with this program. If not, see <http://www.gnu.org/licenses/>.
+ */
+
+package com.juick.server.xmpp.s2s;
+
+import com.juick.server.XMPPServer;
+import com.juick.xmpp.extensions.StreamError;
+import com.juick.xmpp.utils.XmlUtils;
+import org.apache.commons.lang3.StringUtils;
+import org.xmlpull.v1.XmlPullParser;
+import org.xmlpull.v1.XmlPullParserException;
+import rocks.xmpp.addr.Jid;
+
+import java.io.EOFException;
+import java.io.IOException;
+import java.net.Socket;
+import java.net.SocketException;
+import java.time.Instant;
+import java.util.Arrays;
+import java.util.List;
+import java.util.UUID;
+import java.util.concurrent.CopyOnWriteArrayList;
+
+/**
+ * @author ugnich
+ */
+public class ConnectionIn extends Connection implements Runnable {
+
+ final public List<Jid> from = new CopyOnWriteArrayList<>();
+ public Instant received;
+ public long packetsRemote = 0;
+ ConnectionListener listener;
+
+ public ConnectionIn(XMPPServer xmpp, Socket socket) throws XmlPullParserException, IOException {
+ super(xmpp);
+ this.setSocket(socket);
+ restartParser();
+ }
+
+ @Override
+ public void run() {
+ try {
+ parser.next(); // stream:stream
+ updateTsRemoteData();
+ if (!parser.getName().equals("stream")
+ || !parser.getNamespace("stream").equals(NS_STREAM)) {
+// || !parser.getAttributeValue(null, "version").equals("1.0")
+// || !parser.getAttributeValue(null, "to").equals(Main.HOSTNAME)) {
+ throw new Exception(String.format("stream from %s invalid", getSocket().getRemoteSocketAddress()));
+ }
+ streamID = parser.getAttributeValue(null, "id");
+ if (streamID == null) {
+ streamID = UUID.randomUUID().toString();
+ }
+ boolean xmppversionnew = parser.getAttributeValue(null, "version") != null;
+ String from = parser.getAttributeValue(null, "from");
+
+ if (Arrays.asList(xmpp.bannedHosts).contains(from)) {
+ closeConnection();
+ return;
+ }
+ sendOpenStream(from, xmppversionnew);
+
+ while (parser.next() != XmlPullParser.END_DOCUMENT) {
+ updateTsRemoteData();
+ if (parser.getEventType() != XmlPullParser.START_TAG) {
+ continue;
+ }
+ logParser();
+
+ packetsRemote++;
+
+ String tag = parser.getName();
+ if (tag.equals("result") && parser.getNamespace().equals(NS_DB)) {
+ String dfrom = parser.getAttributeValue(null, "from");
+ String to = parser.getAttributeValue(null, "to");
+ logger.info("stream from {} to {} {} asking for dialback", dfrom, to, streamID);
+ if (dfrom.endsWith(xmpp.getJid().toEscapedString()) && (dfrom.equals(xmpp.getJid().toEscapedString())
+ || dfrom.endsWith("." + xmpp.getJid()))) {
+ logger.warn("stream from {} is invalid", dfrom);
+ break;
+ }
+ if (to != null && to.equals(xmpp.getJid().toEscapedString())) {
+ String dbKey = XmlUtils.getTagText(parser);
+ updateTsRemoteData();
+ xmpp.startDialback(Jid.of(dfrom), streamID, dbKey);
+ } else {
+ logger.warn("stream from " + dfrom + " " + streamID + " invalid to " + to);
+ break;
+ }
+ } else if (tag.equals("verify") && parser.getNamespace().equals(NS_DB)) {
+ String vfrom = parser.getAttributeValue(null, "from");
+ String vto = parser.getAttributeValue(null, "to");
+ String vid = parser.getAttributeValue(null, "id");
+ String vkey = XmlUtils.getTagText(parser);
+ updateTsRemoteData();
+ final boolean[] valid = {false};
+ if (vfrom != null && vto != null && vid != null && vkey != null) {
+ xmpp.getConnectionOut(Jid.of(vfrom), false).ifPresent(c -> {
+ String dialbackKey = c.dbKey;
+ valid[0] = vkey.equals(dialbackKey);
+ });
+ }
+ if (valid[0]) {
+ sendStanza("<db:verify from='" + vto + "' to='" + vfrom + "' id='" + vid + "' type='valid'/>");
+ logger.info("stream from {} {} dialback verify valid", vfrom, streamID);
+ } else {
+ sendStanza("<db:verify from='" + vto + "' to='" + vfrom + "' id='" + vid + "' type='invalid'/>");
+ logger.warn("stream from {} {} dialback verify invalid", vfrom, streamID);
+ }
+ } else if (tag.equals("presence") && checkFromTo(parser)) {
+ String xml = XmlUtils.parseToString(parser, false);
+ logger.info("stream {} presence: {}", streamID, xml);
+ xmpp.onStanzaReceived(xml);
+ } else if (tag.equals("message") && checkFromTo(parser)) {
+ updateTsRemoteData();
+ String xml = XmlUtils.parseToString(parser, false);
+ logger.info("stream {} message: {}", streamID, xml);
+ xmpp.onStanzaReceived(xml);
+
+ } else if (tag.equals("iq") && checkFromTo(parser)) {
+ updateTsRemoteData();
+ String type = parser.getAttributeValue(null, "type");
+ String xml = XmlUtils.parseToString(parser, false);
+ if (type == null || !type.equals("error")) {
+ logger.info("stream {} iq: {}", streamID, xml);
+ xmpp.onStanzaReceived(xml);
+ }
+ } else if (!isSecured() && tag.equals("starttls")) {
+ listener.starttls(this);
+ } else if (isSecured() && tag.equals("stream") && parser.getNamespace().equals(NS_STREAM)) {
+ sendOpenStream(null, true);
+ } else if (tag.equals("error")) {
+ StreamError streamError = StreamError.parse(parser);
+ logger.warn("Stream error from {}: {}", streamID, streamError.getCondition());
+ xmpp.removeConnectionIn(this);
+ closeConnection();
+ } else {
+ String unhandledStanza = XmlUtils.parseToString(parser, true);
+ logger.warn("Unhandled stanza from {}: {}", streamID, unhandledStanza);
+ }
+ }
+ logger.warn("stream {} finished", streamID);
+ xmpp.removeConnectionIn(this);
+ closeConnection();
+ } catch (EOFException | SocketException ex) {
+ logger.info("stream {} closed (dirty)", streamID);
+ xmpp.removeConnectionIn(this);
+ closeConnection();
+ } catch (Exception e) {
+ logger.warn("stream {} error {}", streamID, e);
+ xmpp.removeConnectionIn(this);
+ closeConnection();
+ }
+ }
+
+ void updateTsRemoteData() {
+ received = Instant.now();
+ }
+
+ void sendOpenStream(String from, boolean xmppversionnew) throws IOException {
+ String openStream = "<?xml version='1.0'?><stream:stream xmlns='jabber:server' " +
+ "xmlns:stream='http://etherx.jabber.org/streams' xmlns:db='jabber:server:dialback' from='" +
+ xmpp.getJid().toEscapedString() + "' id='" + streamID + "' version='1.0'>";
+ if (xmppversionnew) {
+ openStream += "<stream:features>";
+ if (listener != null && !isSecured() && !Arrays.asList(xmpp.brokenSSLhosts).contains(from)) {
+ openStream += "<starttls xmlns=\"" + NS_TLS + "\"><optional/></starttls>";
+ }
+ openStream += "</stream:features>";
+ }
+ sendStanza(openStream);
+ }
+
+ public void sendDialbackResult(Jid sfrom, String type) {
+ sendStanza("<db:result from='" + xmpp.getJid().toEscapedString() + "' to='" + sfrom + "' type='" + type + "'/>");
+ if (type.equals("valid")) {
+ from.add(sfrom);
+ logger.info("stream from {} {} ready", sfrom, streamID);
+ }
+ }
+
+ boolean checkFromTo(XmlPullParser parser) throws Exception {
+ String cfrom = parser.getAttributeValue(null, "from");
+ String cto = parser.getAttributeValue(null, "to");
+ if (StringUtils.isNotEmpty(cfrom) && StringUtils.isNotEmpty(cto)) {
+ Jid jidto = Jid.of(cto);
+ if (jidto.getDomain().equals(xmpp.getJid().toEscapedString())) {
+ Jid jidfrom = Jid.of(cfrom);
+ for (Jid aFrom : from) {
+ if (aFrom.equals(Jid.of(jidfrom.getDomain()))) {
+ return true;
+ }
+ }
+ }
+ }
+ return false;
+ }
+ public void setListener(ConnectionListener listener) {
+ this.listener = listener;
+ }
+}
diff --git a/juick-server/src/main/java/com/juick/server/xmpp/s2s/ConnectionListener.java b/juick-server/src/main/java/com/juick/server/xmpp/s2s/ConnectionListener.java
new file mode 100644
index 00000000..efac8732
--- /dev/null
+++ b/juick-server/src/main/java/com/juick/server/xmpp/s2s/ConnectionListener.java
@@ -0,0 +1,14 @@
+package com.juick.server.xmpp.s2s;
+
+import com.juick.xmpp.extensions.StreamError;
+
+public interface ConnectionListener {
+ void starttls(ConnectionIn connection);
+ void proceed(ConnectionOut connection);
+ void verify(ConnectionOut connection, String from, String type, String sid);
+ void dialbackError(ConnectionOut connection, StreamError error);
+ void finished(ConnectionOut connection, boolean dirty);
+ void exception(ConnectionOut connection, Exception ex);
+ void ready(ConnectionOut connection);
+ boolean securing(ConnectionOut connection);
+}
diff --git a/juick-server/src/main/java/com/juick/server/xmpp/s2s/ConnectionOut.java b/juick-server/src/main/java/com/juick/server/xmpp/s2s/ConnectionOut.java
new file mode 100644
index 00000000..fb95f0e4
--- /dev/null
+++ b/juick-server/src/main/java/com/juick/server/xmpp/s2s/ConnectionOut.java
@@ -0,0 +1,167 @@
+/*
+ * Copyright (C) 2008-2017, Juick
+ *
+ * This program is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU Affero General Public License as
+ * published by the Free Software Foundation, either version 3 of the
+ * License, or (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ * GNU Affero General Public License for more details.
+ *
+ * You should have received a copy of the GNU Affero General Public License
+ * along with this program. If not, see <http://www.gnu.org/licenses/>.
+ */
+
+package com.juick.server.xmpp.s2s;
+
+import com.juick.server.xmpp.s2s.util.DialbackUtils;
+import com.juick.xmpp.Stream;
+import com.juick.xmpp.extensions.StreamError;
+import com.juick.xmpp.extensions.StreamFeatures;
+import com.juick.xmpp.utils.XmlUtils;
+import org.apache.commons.text.RandomStringGenerator;
+import org.slf4j.Logger;
+import org.slf4j.LoggerFactory;
+import org.xmlpull.v1.XmlPullParser;
+import rocks.xmpp.addr.Jid;
+
+import java.io.EOFException;
+import java.io.IOException;
+import java.io.InputStream;
+import java.io.OutputStream;
+import java.net.SocketException;
+import java.util.UUID;
+
+/**
+ * @author ugnich
+ */
+public class ConnectionOut extends Stream {
+ protected static final Logger logger = LoggerFactory.getLogger(ConnectionOut.class);
+ public static final String NS_TLS = "urn:ietf:params:xml:ns:xmpp-tls";
+ public static final String NS_DB = "jabber:server:dialback";
+ private boolean secured = false;
+
+ public boolean streamReady = false;
+ String checkSID = null;
+ String dbKey = null;
+ private String streamID;
+ ConnectionListener listener;
+ RandomStringGenerator generator = new RandomStringGenerator.Builder().withinRange('a', 'z').build();
+
+ public ConnectionOut(Jid from, Jid to, InputStream is, OutputStream os, String checkSID, String dbKey) throws Exception {
+ super(from, to, is, os);
+ this.to = to;
+ this.checkSID = checkSID;
+ this.dbKey = dbKey;
+ if (dbKey == null) {
+ this.dbKey = DialbackUtils.generateDialbackKey(generator.generate(15), to, from, streamID);
+ }
+ streamID = UUID.randomUUID().toString();
+ }
+
+ public void sendOpenStream() throws IOException {
+ send("<?xml version='1.0'?><stream:stream xmlns='jabber:server' id='" + streamID +
+ "' xmlns:stream='http://etherx.jabber.org/streams' xmlns:db='jabber:server:dialback' from='" +
+ from.toEscapedString() + "' to='" + to.toEscapedString() + "' version='1.0'>");
+ }
+
+ void processDialback() throws Exception {
+ if (checkSID != null) {
+ sendDialbackVerify(checkSID, dbKey);
+ }
+ send("<db:result from='" + from.toEscapedString() + "' to='" + to.toEscapedString() + "'>" +
+ dbKey + "</db:result>");
+ }
+
+ @Override
+ public void handshake() {
+ try {
+ restartStream();
+
+ sendOpenStream();
+
+ parser.next(); // stream:stream
+ streamID = parser.getAttributeValue(null, "id");
+ if (streamID == null || streamID.isEmpty()) {
+ throw new Exception("stream to " + to + " invalid first packet");
+ }
+
+ logger.info("stream to {} {} open", to, streamID);
+ boolean xmppversionnew = parser.getAttributeValue(null, "version") != null;
+ if (!xmppversionnew) {
+ processDialback();
+ }
+
+ while (parser.next() != XmlPullParser.END_DOCUMENT) {
+ if (parser.getEventType() != XmlPullParser.START_TAG) {
+ continue;
+ }
+
+ String tag = parser.getName();
+ if (tag.equals("result") && parser.getNamespace().equals(NS_DB)) {
+ String type = parser.getAttributeValue(null, "type");
+ if (type != null && type.equals("valid")) {
+ streamReady = true;
+ listener.ready(this);
+ } else {
+ logger.info("stream to {} {} dialback fail", to, streamID);
+ }
+ XmlUtils.skip(parser);
+ } else if (tag.equals("verify") && parser.getNamespace().equals(NS_DB)) {
+ String from = parser.getAttributeValue(null, "from");
+ String type = parser.getAttributeValue(null, "type");
+ String sid = parser.getAttributeValue(null, "id");
+ listener.verify(this, from, type, sid);
+ XmlUtils.skip(parser);
+ } else if (tag.equals("features") && parser.getNamespace().equals(NS_STREAM)) {
+ StreamFeatures features = StreamFeatures.parse(parser);
+ if (listener != null && !secured && features.STARTTLS >= 0
+ && listener.securing(this)) {
+ logger.info("stream to {} {} securing", to.toEscapedString(), streamID);
+ send("<starttls xmlns=\"" + NS_TLS + "\" />");
+ } else {
+ processDialback();
+ }
+ } else if (tag.equals("proceed") && parser.getNamespace().equals(NS_TLS)) {
+ listener.proceed(this);
+ } else if (secured && tag.equals("stream") && parser.getNamespace().equals(NS_STREAM)) {
+ streamID = parser.getAttributeValue(null, "id");
+ } else if (tag.equals("error")) {
+ StreamError streamError = StreamError.parse(parser);
+ listener.dialbackError(this, streamError);
+ } else {
+ String unhandledStanza = XmlUtils.parseToString(parser, true);
+ logger.warn("Unhandled stanza from {} {} : {}", to, streamID, unhandledStanza);
+ }
+ }
+ listener.finished(this, false);
+ } catch (EOFException | SocketException eofex) {
+ listener.finished(this, true);
+ } catch (Exception e) {
+ listener.exception(this, e);
+ }
+ }
+
+ public void sendDialbackVerify(String sid, String key) {
+ send("<db:verify from='" + from.toEscapedString() + "' to='" + to + "' id='" + sid + "'>" +
+ key + "</db:verify>");
+ }
+ public void setListener(ConnectionListener listener) {
+ this.listener = listener;
+ }
+
+ public String getStreamID() {
+ return streamID;
+ }
+
+ public boolean isSecured() {
+ return secured;
+ }
+
+ public void setSecured(boolean secured) {
+ this.secured = secured;
+ }
+}
diff --git a/juick-server/src/main/java/com/juick/server/xmpp/s2s/DNSQueries.java b/juick-server/src/main/java/com/juick/server/xmpp/s2s/DNSQueries.java
new file mode 100644
index 00000000..3d12ed35
--- /dev/null
+++ b/juick-server/src/main/java/com/juick/server/xmpp/s2s/DNSQueries.java
@@ -0,0 +1,65 @@
+/*
+ * Copyright (C) 2008-2017, Juick
+ *
+ * This program is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU Affero General Public License as
+ * published by the Free Software Foundation, either version 3 of the
+ * License, or (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ * GNU Affero General Public License for more details.
+ *
+ * You should have received a copy of the GNU Affero General Public License
+ * along with this program. If not, see <http://www.gnu.org/licenses/>.
+ */
+
+package com.juick.server.xmpp.s2s;
+
+import org.apache.commons.lang3.math.NumberUtils;
+import org.slf4j.Logger;
+import org.slf4j.LoggerFactory;
+
+import java.net.InetSocketAddress;
+import java.util.Hashtable;
+import java.util.Random;
+import javax.naming.NamingException;
+import javax.naming.directory.Attribute;
+import javax.naming.directory.DirContext;
+import javax.naming.directory.InitialDirContext;
+
+/**
+ *
+ * @author ugnich
+ */
+public class DNSQueries {
+
+ private static final Logger logger = LoggerFactory.getLogger(DNSQueries.class);
+
+ private static Random rand = new Random();
+
+ public static InetSocketAddress getServerAddress(String hostname) {
+
+ String host = hostname;
+ int port = 5269;
+
+ Hashtable<String, String> env = new Hashtable<>(5);
+ env.put("java.naming.factory.initial", "com.sun.jndi.dns.DnsContextFactory");
+ try {
+ DirContext ctx = new InitialDirContext(env);
+ Attribute att = ctx.getAttributes("_xmpp-server._tcp." + hostname, new String[]{"SRV"}).get("SRV");
+
+ if (att != null && att.size() > 0) {
+ int i = rand.nextInt(att.size());
+ String srv[] = att.get(i).toString().split(" ");
+ port = NumberUtils.toInt(srv[2], 5269);
+ host = srv[3];
+ }
+ ctx.close();
+ } catch (NamingException e) {
+ logger.info("SRV record for {} is not resolved, falling back to A record", hostname);
+ }
+ return new InetSocketAddress(host, port);
+ }
+}
diff --git a/juick-server/src/main/java/com/juick/server/xmpp/s2s/StanzaListener.java b/juick-server/src/main/java/com/juick/server/xmpp/s2s/StanzaListener.java
new file mode 100644
index 00000000..6932298f
--- /dev/null
+++ b/juick-server/src/main/java/com/juick/server/xmpp/s2s/StanzaListener.java
@@ -0,0 +1,28 @@
+/*
+ * Copyright (C) 2008-2017, Juick
+ *
+ * This program is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU Affero General Public License as
+ * published by the Free Software Foundation, either version 3 of the
+ * License, or (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ * GNU Affero General Public License for more details.
+ *
+ * You should have received a copy of the GNU Affero General Public License
+ * along with this program. If not, see <http://www.gnu.org/licenses/>.
+ */
+
+package com.juick.server.xmpp.s2s;
+
+
+import rocks.xmpp.core.stanza.model.Stanza;
+
+/**
+ * Created by vitalyster on 07.12.2016.
+ */
+public interface StanzaListener {
+ void stanzaReceived(Stanza xmlValue);
+}
diff --git a/juick-server/src/main/java/com/juick/server/xmpp/s2s/util/DialbackUtils.java b/juick-server/src/main/java/com/juick/server/xmpp/s2s/util/DialbackUtils.java
new file mode 100644
index 00000000..71405f34
--- /dev/null
+++ b/juick-server/src/main/java/com/juick/server/xmpp/s2s/util/DialbackUtils.java
@@ -0,0 +1,36 @@
+/*
+ * Copyright (C) 2008-2017, Juick
+ *
+ * This program is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU Affero General Public License as
+ * published by the Free Software Foundation, either version 3 of the
+ * License, or (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ * GNU Affero General Public License for more details.
+ *
+ * You should have received a copy of the GNU Affero General Public License
+ * along with this program. If not, see <http://www.gnu.org/licenses/>.
+ */
+
+package com.juick.server.xmpp.s2s.util;
+
+import org.apache.commons.codec.digest.DigestUtils;
+import org.apache.commons.codec.digest.HmacUtils;
+import rocks.xmpp.addr.Jid;
+
+/**
+ * Created by vitalyster on 05.12.2016.
+ */
+public class DialbackUtils {
+ private DialbackUtils() {
+ throw new IllegalStateException();
+ }
+
+ public static String generateDialbackKey(String secret, Jid to, Jid from, String id) {
+ return HmacUtils.hmacSha256Hex(DigestUtils.sha256(secret),
+ (to.toEscapedString() + " " + from.toEscapedString() + " " + id).getBytes());
+ }
+}