Fix some more static analysis warnings

pom.xml

@@ -87,6 +87,12 @@
             <version>3.0.3</version>
             <scope>compile</scope>
         </dependency>
+        <dependency>
+            <groupId>com.google.code.findbugs</groupId>
+            <artifactId>findbugs</artifactId>
+            <version>3.0.0</version>
+            <scope>provided</scope>
+        </dependency>
         <dependency>
             <groupId>org.projectlombok</groupId>
             <artifactId>lombok</artifactId>

proxy/src/main/java/net/md_5/bungee/BungeeCord.java

@@ -1,5 +1,6 @@
 package net.md_5.bungee;
 
+import com.google.common.base.Charsets;
 import com.google.common.base.Preconditions;
 import com.google.common.base.Predicate;
 import com.google.common.collect.Iterables;
@@ -16,6 +17,7 @@ import net.md_5.bungee.log.BungeeLogger;
 import net.md_5.bungee.scheduler.BungeeScheduler;
 import com.google.common.util.concurrent.ThreadFactoryBuilder;
 import com.google.gson.Gson;
+import edu.umd.cs.findbugs.annotations.SuppressFBWarnings;
 import io.netty.bootstrap.ServerBootstrap;
 import io.netty.channel.Channel;
 import io.netty.channel.ChannelException;
@@ -157,6 +159,7 @@ public class BungeeCord extends ProxyServer
         return (BungeeCord) ProxyServer.getInstance();
     }
 
+    @SuppressFBWarnings("DM_DEFAULT_ENCODING")
     public BungeeCord() throws IOException
     {
         System.setSecurityManager( new BungeeSecurityManager() );
@@ -200,6 +203,7 @@ public class BungeeCord extends ProxyServer
      * @throws Exception
      */
     @Override
+    @SuppressFBWarnings("RV_RETURN_VALUE_IGNORED_BAD_PRACTICE")
     public void start() throws Exception
     {
         System.setProperty( "java.net.preferIPv4Stack", "true" ); // Minecraft does not support IPv6
@@ -311,6 +315,7 @@ public class BungeeCord extends ProxyServer
         new Thread( "Shutdown Thread" )
         {
             @Override
+            @SuppressFBWarnings("DM_EXIT")
             @SuppressWarnings("TooBroadCatch")
             public void run()
             {
@@ -514,7 +519,7 @@ public class BungeeCord extends ProxyServer
 
     public PluginMessage registerChannels()
     {
-        return new PluginMessage( "REGISTER", Util.format( pluginChannels, "\00" ).getBytes() );
+        return new PluginMessage( "REGISTER", Util.format( pluginChannels, "\00" ).getBytes( Charsets.UTF_8 ) );
     }
 
     @Override
@@ -614,7 +619,7 @@ public class BungeeCord extends ProxyServer
             @Override
             public boolean apply(ProxiedPlayer input)
             {
-                return input.getName().toLowerCase().contains( partialName.toLowerCase() );
+                return ( input == null ) ? false : input.getName().toLowerCase().contains( partialName.toLowerCase() );
             }
         } ) );
     }

proxy/src/main/java/net/md_5/bungee/EncryptionUtil.java

@@ -24,7 +24,7 @@ public class EncryptionUtil
 {
 
     private static final Random random = new Random();
-    public static KeyPair keys;
+    public static final KeyPair keys;
     @Getter
     private static final SecretKey secret = new SecretKeySpec( new byte[ 16 ], "AES" );
 

proxy/src/main/java/net/md_5/bungee/UserConnection.java

@@ -96,7 +96,6 @@ public final class UserConnection implements ProxiedPlayer
     @Setter
     private int serverEntityId;
     @Getter
-    @Setter
     private ClientSettings settings;
     @Getter
     private final Scoreboard serverSentScoreboard = new Scoreboard();
@@ -435,9 +434,15 @@ public final class UserConnection implements ProxiedPlayer
         return getPendingConnection().getUniqueId();
     }
 
+    public void setSettings(ClientSettings settings)
+    {
+        this.settings = settings;
+        this.locale = null;
+    }
+
     @Override
     public Locale getLocale()
     {
-        return ( locale == null ) ? locale = Locale.forLanguageTag( settings.getLocale() ) : locale;
+        return ( locale == null && settings != null ) ? locale = Locale.forLanguageTag( settings.getLocale() ) : locale;
     }
 }

proxy/src/main/java/net/md_5/bungee/conf/YamlConfig.java

@@ -1,5 +1,6 @@
 package net.md_5.bungee.conf;
 
+import edu.umd.cs.findbugs.annotations.SuppressFBWarnings;
 import java.io.File;
 import java.io.FileInputStream;
 import java.io.FileWriter;
@@ -42,19 +43,23 @@ public class YamlConfig implements ConfigurationAdapter
         GLOBAL( Global.class ), GLOBAL_PING( GlobalPing.class ), SERVER( ServerUnique.class );
         private final Class<? extends TabListHandler> clazz;
     }
-    private Yaml yaml;
+    private final Yaml yaml;
     private Map config;
     private final File file = new File( "config.yml" );
 
+    public YamlConfig()
+    {
+        DumperOptions options = new DumperOptions();
+        options.setDefaultFlowStyle( DumperOptions.FlowStyle.BLOCK );
+        yaml = new Yaml( options );
+    }
+
     @Override
     public void load()
     {
         try
         {
             file.createNewFile();
-            DumperOptions options = new DumperOptions();
-            options.setDefaultFlowStyle( DumperOptions.FlowStyle.BLOCK );
-            yaml = new Yaml( options );
 
             try ( InputStream is = new FileInputStream( file ) )
             {
@@ -182,6 +187,7 @@ public class YamlConfig implements ConfigurationAdapter
 
     @Override
     @SuppressWarnings("unchecked")
+    @SuppressFBWarnings("RCN_REDUNDANT_NULLCHECK_OF_NONNULL_VALUE")
     public Collection<ListenerInfo> getListeners()
     {
         Collection<Map<String, Object>> base = get( "listeners", (Collection) Arrays.asList( new Map[]

proxy/src/main/java/net/md_5/bungee/connection/DownstreamBridge.java

@@ -118,6 +118,8 @@ public class DownstreamBridge extends PacketHandler
             case 1:
                 serverScoreboard.removeObjective( objective.getName() );
                 break;
+            default:
+                throw new IllegalArgumentException( "Unknown objective action: " + objective.getAction() );
         }
     }
 
@@ -135,6 +137,8 @@ public class DownstreamBridge extends PacketHandler
             case 1:
                 serverScoreboard.removeScore( score.getItemName() );
                 break;
+            default:
+                throw new IllegalArgumentException( "Unknown scoreboard action: " + score.getAction() );
         }
     }
 

proxy/src/main/java/net/md_5/bungee/connection/PingHandler.java

@@ -1,6 +1,7 @@
 package net.md_5.bungee.connection;
 
 import com.google.gson.Gson;
+import edu.umd.cs.findbugs.annotations.SuppressFBWarnings;
 import lombok.RequiredArgsConstructor;
 import net.md_5.bungee.BungeeCord;
 import net.md_5.bungee.api.Callback;
@@ -49,6 +50,7 @@ public class PingHandler extends PacketHandler
     }
 
     @Override
+    @SuppressFBWarnings("UWF_FIELD_NOT_INITIALIZED_IN_CONSTRUCTOR")
     public void handle(StatusResponse statusResponse) throws Exception
     {
         Gson gson = protocol == ProtocolConstants.MINECRAFT_1_7_2 ? BungeeCord.getInstance().gsonLegacy : BungeeCord.getInstance().gson;

proxy/src/main/java/net/md_5/bungee/entitymap/EntityMap.java

@@ -1,5 +1,6 @@
 package net.md_5.bungee.entitymap;
 
+import edu.umd.cs.findbugs.annotations.SuppressFBWarnings;
 import io.netty.buffer.ByteBuf;
 import net.md_5.bungee.protocol.DefinedPacket;
 import net.md_5.bungee.protocol.ProtocolConstants;
@@ -80,6 +81,7 @@ public abstract class EntityMap
         }
     }
 
+    @SuppressFBWarnings("DLS_DEAD_LOCAL_STORE")
     protected static void rewriteVarInt(ByteBuf packet, int oldId, int newId, int offset)
     {
         // Need to rewrite the packet because VarInts are variable length

proxy/src/main/java/net/md_5/bungee/entitymap/EntityMap_14_11_a.java

@@ -1,5 +1,6 @@
 package net.md_5.bungee.entitymap;
 
+import edu.umd.cs.findbugs.annotations.SuppressFBWarnings;
 import io.netty.buffer.ByteBuf;
 import net.md_5.bungee.BungeeCord;
 import net.md_5.bungee.UserConnection;
@@ -9,6 +10,7 @@ import net.md_5.bungee.protocol.ProtocolConstants;
 
 class EntityMap_14_11_a extends EntityMap
 {
+
     EntityMap_14_11_a()
     {
         addRewrite( 0x04, ProtocolConstants.Direction.TO_CLIENT, true ); // Entity Equipment
@@ -42,6 +44,7 @@ class EntityMap_14_11_a extends EntityMap
     }
 
     @Override
+    @SuppressFBWarnings("DLS_DEAD_LOCAL_STORE")
     public void rewriteClientbound(ByteBuf packet, int oldId, int newId)
     {
         super.rewriteClientbound( packet, oldId, newId );
@@ -153,7 +156,8 @@ class EntityMap_14_11_a extends EntityMap
             {
                 DefinedPacket.readVarInt( packet );
                 rewriteInt( packet, oldId, newId, packet.readerIndex() );
-            } else if ( event == 2 /* Entity Dead */ ) {
+            } else if ( event == 2 /* Entity Dead */ )
+            {
                 int position = packet.readerIndex();
                 rewriteVarInt( packet, oldId, newId, packet.readerIndex() );
                 packet.readerIndex( position );

proxy/src/main/java/net/md_5/bungee/entitymap/EntityMap_1_7_6.java

@@ -1,5 +1,6 @@
 package net.md_5.bungee.entitymap;
 
+import edu.umd.cs.findbugs.annotations.SuppressFBWarnings;
 import io.netty.buffer.ByteBuf;
 import net.md_5.bungee.BungeeCord;
 import net.md_5.bungee.UserConnection;
@@ -8,12 +9,9 @@ import net.md_5.bungee.protocol.DefinedPacket;
 
 class EntityMap_1_7_6 extends EntityMap_1_7_2
 {
-    EntityMap_1_7_6()
-    {
-        super();
-    }
 
     @Override
+    @SuppressFBWarnings("DLS_DEAD_LOCAL_STORE")
     public void rewriteClientbound(ByteBuf packet, int oldId, int newId)
     {
         super.rewriteClientbound( packet, oldId, newId );

proxy/src/main/java/net/md_5/bungee/log/BungeeLogger.java

@@ -1,5 +1,6 @@
 package net.md_5.bungee.log;
 
+import edu.umd.cs.findbugs.annotations.SuppressFBWarnings;
 import java.io.IOException;
 import java.util.logging.FileHandler;
 import java.util.logging.Formatter;
@@ -18,6 +19,7 @@ public class BungeeLogger extends Logger
             {
                 "CallToPrintStackTrace", "CallToThreadStartDuringObjectConstruction"
             })
+    @SuppressFBWarnings("SC_START_IN_CTOR")
     public BungeeLogger(BungeeCord bungee)
     {
         super( "BungeeCord", null );

proxy/src/main/java/net/md_5/bungee/log/LoggingOutputStream.java

@@ -1,5 +1,6 @@
 package net.md_5.bungee.log;
 
+import com.google.common.base.Charsets;
 import java.io.ByteArrayOutputStream;
 import java.io.IOException;
 import java.util.logging.Level;
@@ -18,7 +19,7 @@ public class LoggingOutputStream extends ByteArrayOutputStream
     @Override
     public void flush() throws IOException
     {
-        String contents = toString();
+        String contents = toString( Charsets.UTF_8.name() );
         super.reset();
         if ( !contents.isEmpty() && !contents.equals( separator ) )
         {

proxy/src/main/java/net/md_5/bungee/module/ModuleManager.java

@@ -1,6 +1,7 @@
 package net.md_5.bungee.module;
 
 import com.google.common.base.Preconditions;
+import edu.umd.cs.findbugs.annotations.SuppressFBWarnings;
 import java.io.File;
 import java.io.FileInputStream;
 import java.io.FileWriter;
@@ -30,6 +31,10 @@ public class ModuleManager
         knownSources.put( "jenkins", new JenkinsModuleSource() );
     }
 
+    @SuppressFBWarnings(
+            {
+                "SF_SWITCH_FALLTHROUGH", "SF_SWITCH_NO_DEFAULT"
+            })
     public void load(ProxyServer proxy, File moduleDirectory) throws Exception
     {
         moduleDirectory.mkdir();
@@ -125,6 +130,7 @@ public class ModuleManager
         }
     }
 
+    @SuppressFBWarnings("REC_CATCH_EXCEPTION")
     private ModuleVersion getVersion(File file)
     {
         try ( JarFile jar = new JarFile( file ) )

proxy/src/main/java/net/md_5/bungee/netty/PipelineUtils.java

@@ -65,16 +65,16 @@ public class PipelineUtils
     };
     public static final Base BASE = new Base();
     private static final Varint21LengthFieldPrepender framePrepender = new Varint21LengthFieldPrepender();
-    public static String TIMEOUT_HANDLER = "timeout";
+    public static final String TIMEOUT_HANDLER = "timeout";
-    public static String PACKET_DECODER = "packet-decoder";
+    public static final String PACKET_DECODER = "packet-decoder";
-    public static String PACKET_ENCODER = "packet-encoder";
+    public static final String PACKET_ENCODER = "packet-encoder";
-    public static String BOSS_HANDLER = "inbound-boss";
+    public static final String BOSS_HANDLER = "inbound-boss";
-    public static String ENCRYPT_HANDLER = "encrypt";
+    public static final String ENCRYPT_HANDLER = "encrypt";
-    public static String DECRYPT_HANDLER = "decrypt";
+    public static final String DECRYPT_HANDLER = "decrypt";
-    public static String FRAME_DECODER = "frame-decoder";
+    public static final String FRAME_DECODER = "frame-decoder";
-    public static String FRAME_PREPENDER = "frame-prepender";
+    public static final String FRAME_PREPENDER = "frame-prepender";
-    public static String LEGACY_DECODER = "legacy-decoder";
+    public static final String LEGACY_DECODER = "legacy-decoder";
-    public static String LEGACY_KICKER = "legacy-kick";
+    public static final String LEGACY_KICKER = "legacy-kick";
 
     private static boolean epoll;
 

proxy/src/main/java/net/md_5/bungee/tab/Custom.java

@@ -56,9 +56,6 @@ public class Custom extends TabListAdapter implements CustomTabList
                 rowLim = row;
                 colLim = column;
             }
-        } else
-        {
-            sentStuff.remove( text );
         }
 
         slots[--row][--column] = text;