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Diffstat (limited to 'juick-server/src/main/java/com/juick/server/xmpp/s2s/ConnectionOut.java')
-rw-r--r--juick-server/src/main/java/com/juick/server/xmpp/s2s/ConnectionOut.java167
1 files changed, 167 insertions, 0 deletions
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..e3bd53e9
--- /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.debug("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.warn("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.debug("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;
+ }
+}