minor code clean up for tag and element

src/main/java/eu/siacs/conversations/xml/Element.java

@@ -133,9 +133,8 @@ public class Element {
         return this;
     }
 
-	public Element removeAttribute(String name) {
+    public void removeAttribute(final String name) {
         this.attributes.remove(name);
-		return this;
     }
 
     public Element setAttributes(Hashtable<String, String> attributes) {
@@ -171,21 +170,21 @@ public class Element {
     public String toString() {
         final StringBuilder elementOutput = new StringBuilder();
         if ((content == null) && (children.size() == 0)) {
-			Tag emptyTag = Tag.empty(name);
+            final Tag emptyTag = Tag.empty(name);
-			emptyTag.setAtttributes(this.attributes);
+            emptyTag.setAttributes(this.attributes);
-			elementOutput.append(emptyTag.toString());
+            elementOutput.append(emptyTag);
         } else {
-			Tag startTag = Tag.start(name);
+            final Tag startTag = Tag.start(name);
-			startTag.setAtttributes(this.attributes);
+            startTag.setAttributes(this.attributes);
             elementOutput.append(startTag);
             if (content != null) {
                 elementOutput.append(XmlHelper.encodeEntities(content));
             } else {
-				for (Element child : children) {
+                for (final Element child : children) {
                     elementOutput.append(child.toString());
                 }
             }
-			Tag endTag = Tag.end(name);
+            final Tag endTag = Tag.end(name);
             elementOutput.append(endTag);
         }
         return elementOutput.toString();

src/main/java/eu/siacs/conversations/xml/Tag.java

@@ -1,7 +1,8 @@
 package eu.siacs.conversations.xml;
 
+import org.jetbrains.annotations.NotNull;
+
 import java.util.Hashtable;
-import java.util.Iterator;
 import java.util.Map.Entry;
 import java.util.Set;
 
@@ -42,29 +43,26 @@ public class Tag {
         return name;
     }
 
-	public String getAttribute(String attrName) {
+    public String getAttribute(final String attrName) {
         return this.attributes.get(attrName);
     }
 
-	public Tag setAttribute(String attrName, String attrValue) {
+    public Tag setAttribute(final String attrName, final String attrValue) {
         this.attributes.put(attrName, attrValue);
         return this;
     }
 
-	public Tag setAtttributes(Hashtable<String, String> attributes) {
+    public void setAttributes(final Hashtable<String, String> attributes) {
         this.attributes = attributes;
-		return this;
     }
 
     public boolean isStart(String needle) {
-		if (needle == null)
+        if (needle == null) return false;
-			return false;
         return (this.type == START) && (needle.equals(this.name));
     }
 
     public boolean isEnd(String needle) {
-		if (needle == null)
+        if (needle == null) return false;
-			return false;
         return (this.type == END) && (needle.equals(this.name));
     }
 
@@ -72,18 +70,17 @@ public class Tag {
         return (this.type == NO);
     }
 
+    @NotNull
     public String toString() {
-		StringBuilder tagOutput = new StringBuilder();
+        final StringBuilder tagOutput = new StringBuilder();
         tagOutput.append('<');
         if (type == END) {
             tagOutput.append('/');
         }
         tagOutput.append(name);
         if (type != END) {
-			Set<Entry<String, String>> attributeSet = attributes.entrySet();
+            final Set<Entry<String, String>> attributeSet = attributes.entrySet();
-			Iterator<Entry<String, String>> it = attributeSet.iterator();
+            for (final Entry<String, String> entry : attributeSet) {
-			while (it.hasNext()) {
-				Entry<String, String> entry = it.next();
                 tagOutput.append(' ');
                 tagOutput.append(entry.getKey());
                 tagOutput.append("=\"");

src/main/java/eu/siacs/conversations/xmpp/XmppConnection.java

@@ -498,6 +498,10 @@ public class XmppConnection implements Runnable {
                                 + ")");
                 account.setKey(
                         Account.PINNED_MECHANISM_KEY, String.valueOf(saslMechanism.getPriority()));
+                if (version == SaslMechanism.Version.SASL_2) {
+                    final String authorizationIdentifier = success.findChildContent("authorization-identifier");
+                    Log.d(Config.LOGTAG,account.getJid().asBareJid()+": SASL 2.0 authorization identifier was "+authorizationIdentifier);
+                }
                 if (version == SaslMechanism.Version.SASL) {
                     tagReader.reset();
                     sendStartStream();
@@ -1179,7 +1183,7 @@ public class XmppConnection implements Runnable {
                     Log.d(Config.LOGTAG, account.getJid() + ": disconnecting because of bind failure. (no jid)");
                 }
             } else {
-                Log.d(Config.LOGTAG, account.getJid() + ": disconnecting because of bind failure (" + packet.toString());
+                Log.d(Config.LOGTAG, account.getJid() + ": disconnecting because of bind failure (" + packet);
             }
             final Element error = packet.findChild("error");
             if (packet.getType() == IqPacket.TYPE.ERROR && error != null && error.hasChild("conflict")) {
@@ -1449,7 +1453,7 @@ public class XmppConnection implements Runnable {
                 features.carbonsEnabled = true;
             } else {
                 Log.d(Config.LOGTAG, account.getJid().asBareJid()
-                        + ": error enableing carbons " + packet.toString());
+                        + ": could not enable carbons " + packet);
             }
         });
     }
@@ -1472,7 +1476,7 @@ public class XmppConnection implements Runnable {
             failPendingMessages(text);
             throw new StateChangingException(Account.State.POLICY_VIOLATION);
         } else {
-            Log.d(Config.LOGTAG, account.getJid().asBareJid() + ": stream error " + streamError.toString());
+            Log.d(Config.LOGTAG, account.getJid().asBareJid() + ": stream error " + streamError);
             throw new StateChangingException(Account.State.STREAM_ERROR);
         }
     }
@@ -1839,8 +1843,8 @@ public class XmppConnection implements Runnable {
             Log.d(Config.LOGTAG, "getting certificate chain");
             try {
                 return KeyChain.getCertificateChain(mXmppConnectionService, alias);
-            } catch (Exception e) {
+            } catch (final Exception e) {
-                Log.d(Config.LOGTAG, e.getMessage());
+                Log.d(Config.LOGTAG, "could not get certificate chain", e);
                 return new X509Certificate[0];
             }
         }