support XEP-0280: Message Carbons

src/protocol/xmpp/OnIqReceived.java

@@ -0,0 +1,8 @@
+package protocol.xmpp;
+
+/**
+ * Created by gerc on 12.03.2015.
+ */
+public interface OnIqReceived {
+    public void onIqReceived(XmlNode xmlNode);
+}

src/protocol/xmpp/ServerFeatures.java

@@ -0,0 +1,54 @@
+package protocol.xmpp;
+
+import java.util.HashMap;
+
+/**
+ * Created by gerc on 12.03.2015.
+ */
+public class ServerFeatures {
+    private HashMap<String, String> serverDiscoItems = new HashMap<>();
+    private String mucServer;
+    private boolean hasMessageArchiveManagement;
+    private boolean hasCarbon;
+    private boolean carbonsEnabled;
+
+    public void parse(XmlNode iqQuery, String id) {
+        while (0 < iqQuery.childrenCount()) {
+            XmlNode featureNode = iqQuery.popChildNode();
+            String feature = featureNode.getAttribute("var");
+            if (feature != null) {
+                if (feature.equals("http://jabber.org/protocol/muc")) {
+                    mucServer = serverDiscoItems.get(id);
+                } else if (feature.equals("urn:xmpp:mam:0")) {
+                    hasMessageArchiveManagement = true;
+                } else if (feature.equals("urn:xmpp:carbons:2")) {
+                    hasCarbon = true;
+                }
+            }
+        }
+    }
+
+    public boolean hasMessageArchiveManagement() {
+        return hasMessageArchiveManagement;
+    }
+
+    public HashMap<String, String> getServerDiscoItems() {
+        return serverDiscoItems;
+    }
+
+    public String mucServer() {
+        return mucServer;
+    }
+
+    public boolean hasCarbon() {
+        return hasCarbon;
+    }
+
+    public boolean isCarbonsEnabled() {
+        return carbonsEnabled;
+    }
+
+    public void setCarbonsEnabled(boolean carbonsEnabled) {
+        this.carbonsEnabled = carbonsEnabled;
+    }
+}

src/protocol/xmpp/XmlNode.java

@@ -27,7 +27,7 @@ public final class XmlNode {
     private XmlNode() {
     }
 
-    private XmlNode(String name) {
+    public XmlNode(String name) {
         this.name = name;
     }
 
@@ -50,7 +50,7 @@ public String getAttribute(String key) {
         return (String) attribs.get(key);
     }
 
-    private void putAttribute(String key, String value) {
+    public void putAttribute(String key, String value) {
         if (S_JID.equals(key)) {
             key = S_JID;
         } else if (S_NAME.equals(key)) {
@@ -60,12 +60,12 @@ private void putAttribute(String key, String value) {
     }
 
     public String getXmlns() {
-        String xmlns = getAttribute("xmlns");
+        String xmlns = getAttribute(S_XMLNS);
         if (null == xmlns) {
             Enumeration e = attribs.keys();
             while (e.hasMoreElements()) {
                 String key = (String) e.nextElement();
-                if (key.startsWith("xmlns:")) {
+                if (key.startsWith(S_XMLNS + ":")) {
                     return getAttribute(key);
                 }
             }
@@ -565,9 +565,14 @@ public void toString(StringBuffer sb) {
         sb.append("</").append(name).append(">");
     }
 
+    public static XmlNode addXmlns(String name, String xmlns) {
+        XmlNode child = new XmlNode(name);
+        child.putAttribute(S_XMLNS, xmlns);
+        return child;
+    }
+
     public static XmlNode getEmptyVCard() {
-        XmlNode vCard = new XmlNode("vCard");
-        vCard.putAttribute(S_XMLNS, "vcard-temp");
+        XmlNode vCard = XmlNode.addXmlns("vCard", "vcard-temp");
         vCard.putAttribute("version", "2.0");
         vCard.putAttribute("prodid", "-/" + "/HandGen/" + "/NONSGML vGen v1.0/" + "/EN");
         return vCard;